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Showing papers on "Paddle published in 2019"


Journal ArticleDOI
TL;DR: In this article, a discrete element approach is presented to assess the powder flow in a lab-scale rotary tablet press with a force feeder consisting of three paddle wheels of different shapes.

26 citations


Journal ArticleDOI
TL;DR: In this paper, a single-point incremental hole-flanging (SPIF) method was proposed, which uses paddle-shaped tools rotating at high speeds while being fed axially into the sheets to form flanges.

15 citations


Journal ArticleDOI
TL;DR: Perturbations to stroke technique are explored to give new insights into the relationships between technique and racing performance.

15 citations


Journal ArticleDOI
TL;DR: The pressure-controlled paddle did not show any clinically relevant changes in breast compression parameters compared to the force- controlled paddle, and there was no basis for preferring one paddle over the other.
Abstract: To reduce pain and discomfort associated with breast compression in mammography, a pressure-controlled compression paddle was recently introduced. The objective was to evaluate the pressure-controlled paddle by comparing it to the standard force-controlled paddle. Differences of compressed breast thickness (CBT), compression force, compression pressure, and average glandular dose (AGD) between annual follow-up full-field digital mammography exams of 3188 patients were retrospectively examined. Two groups were compared: (1) force-force group (FF-group), both examinations were performed with the force-controlled paddle, and (2) force-pressure group (FP-group), only the follow-up examination was performed with the pressure-controlled paddle. In an additional group of patients, pain scores on a scale of 0 (no pain at all) to 10 (worst pain imaginable) were evaluated prospectively (n = 343) who were randomly assigned to either paddle. Median differences between follow-up exams in CBT, compression force, compression pressure, and AGD were for the FF- and FP-group respectively − 1.0 vs 0.0 mm (p ± 2 mm; Δforce > ± 2 daN; Δpressure > ± 1 kPa and ΔAGD > ± 0.1 mGy). The subanalysis dividing CBT into five categories revealed similar results. The median [interquartile range] pain scores were 6 [3, 7] and 5 [3, 7] for the force-controlled and pressure-controlled paddle, respectively, which was not significantly different (p = 0.113). We observed no clinically relevant differences in CBT, compression force, compression pressure, AGD, or pain score between the force- and pressure-controlled paddle. As such, we found no basis for preferring one paddle over the other. • The pressure-controlled paddle did not show any clinically relevant changes in breast compression parameters compared to the force-controlled paddle. • The pressure-controlled paddle did not lead to significant reduction in pain scores indicated by the patients compared to the force-controlled paddle. • A large variation in compression force and compression pressure was observed in mammography exams for the both the force- and pressure-controlled compression paddle.

14 citations


Journal ArticleDOI
TL;DR: In this paper, a custom-built instrumented paddle system based on optical fiber technology was developed to measure real-time handgrip loading and blade loading distribution during on-water kayaking Thirty female participants (15 competitive and 15 recreational kayakers) were asked to sprint across a 50-meter swimming pool as fast as they could in a kayak using the instrumented paddling provided The loading characteristics of the right hand grip and 9 areas of each blade were recorded and analyzed via a customized software.
Abstract: This study aimed to evaluate on-water kayak paddling performance using a custom-built instrumented paddle system based on optical fiber technology The system was developed to measure real-time handgrip loading and blade loading distribution during on-water kayaking Thirty female participants (15 competitive and 15 recreational kayakers) were asked to sprint across a 50-meter swimming pool as fast as they could in a kayak using the instrumented paddle provided The loading characteristics of the right handgrip and 9 areas of each blade were recorded and analyzed via a customized software Noticeable differences in timing and loading variables were observed between the two groups Compared to recreational paddlers, competitive paddlers were characterized by shorter water phase duration (p < 005), higher handgrip loading (p < 005), and higher blade force (p < 005) and impulse (p < 005) in most regions of the blade In conclusion, this study successfully developed an instrumented paddle system using optical fiber sensors to measure on-water kayak paddling performance The results can provide useful information for coaches and athletes to obtain performance feedback and to monitor training

11 citations


Journal ArticleDOI
TL;DR: In this study, 1.8 and 3 mm mini-tablets were prepared using a rotary press with multiple-tip tooling using different process configurations and the number of paddle passes in the die fill region was correlated to mini- tablet die fill performance.

10 citations


Journal ArticleDOI
01 Sep 2019
TL;DR: The Probe Mounted Particle Injector (PMPI) as mentioned in this paper is a probe mounted on a PEEK paddle wheel hub that is driven by a piezo motor, due to the high magnetic fields, that rotates at 100 deg/s.
Abstract: Injection of low-Z powders into fusion plasma has been used to improve wall conditions, similar to the standard boronization process using diborane. Powder injection has the advantage of being much simpler, non-toxic, and efficient. The W7-X stellarator is planning on utilizing powder injection in long pulse discharges; a proof-of-principle test for horizontal injection into the plasma was conceived, a Probe Mounted Particle Injector (PMPI). The PMPI concept is developed using a polyetheretherketone (PEEK) paddle wheel hub that is driven by a piezo motor, due to the high magnetic fields, that rotates at 100 deg/s. This small PMPI fits into an envelope of 120 mm diameter × 150 mm long, a standard size for Multi-Purpose Manipulator (MPM). The device is housed in a carbon cup mounted on a retractable probe that can be placed near the plasma edge, enabling powder injection ˜4–8 cm radially into the boundary plasma. The feed for the paddle is via piezo electric actuator that vibrates a funnel filled with powder into a trough for the paddle to push. The 8 paddle arms, 35 mm long and 10 mm wide, are made from 0.38 mm thick PEEK which drag slightly along the powder-filled trough bottom, becoming a spring-loaded paddle which accelerates the powder upon release. Design challenges are the high ambient magnetic field, vacuum compatible materials, high temperature environment, limited rotary-drive options, and compact space. The design and testing of this new device will be presented.

9 citations


Journal ArticleDOI
TL;DR: The majority of women reported low scores of experienced pain during mammography, independent of compression paddle used, and further research on image quality is needed to fully understand which paddles should be preferred in a screening setting.

9 citations


Journal ArticleDOI
TL;DR: In this article, the remains of a 19th-century Tyne-built paddle tug were found in the Thames Estuary and the partial recovery and recording of the remains were carried out.
Abstract: Abstract This paper reports on the discovery in the Thames Estuary and the partial recovery and recording of the remains of a 19th‐century Tyne‐built paddle tug. The wreck is believed to be that of Admiral built in Newcastle in 1870 and sunk following a collision in the estuary in 1872. This unexpected discovery provided a rare opportunity to examine the archaeological assemblage of one these once‐familiar working vessels and revealed the continuities and innovations of a specific type of engine used on paddle tugs.

8 citations


Journal ArticleDOI
TL;DR: In this article, the performance and load shedding capabilities of an oscillating surge wave energy converter (OSWEC) that utilizes adjustable geometry to control hydrodynamic coefficients were investigated. But the body consists of a bottom-hinged rectangular paddle in which the frame holds five horizontal flaps spanning the interior of the frame.

8 citations


Proceedings ArticleDOI
01 Oct 2019
TL;DR: Both of the experimental and numerical investigations showed that the maximum abrasion loss can be achieve due to the use of 60° paddle angle while the lowest can be achieved using 45°paddle angle.
Abstract: In many huge hydraulic constructions such as dam spillways, large quantities of concrete can be ruined according to the long-term action of water-borne solids. Thus, the life span of these structures can be significantly reduced while the maintenance costs can be highly increased. Accordingly, in this work, the abrasion wear loss of concrete was evaluated using a new proposed apparatus. Samples of different compressive strengths of 25, 35 and 55 MPa were prepared and tested at two various ages (7 and 28 days). Moreover, the effect of the agitation paddle angle was estimated as well. Three different angles of 30, 45 and 60° were evaluated experimentally and numerically using ANSYS software as well. The obtained results showed that at 28- day age and with 60° paddle angel, the abrasion resistance for compressive strengths of 35 and 55 MPa improves approximately by 20 and 38% as compared with that of 25 MPa, respectively. Furthermore, both of the experimental and numerical investigations showed that the maximum abrasion loss can be achieved due to the use of 60° paddle angle while the lowest can be achieved using 45°paddle angle.

Patent
09 Apr 2019
TL;DR: In this article, the authors proposed a novel pesticide spraying equipment consisting of a box body, walking wheels, stirring rod assemblies, a spiral stirring paddle, a driving motor, a swinging rod, a guide column, a nozzle and a liquid pump, where damping supporting parts are arranged at the ends of a supporting base.
Abstract: The invention relates to the technical field of agricultural production, and particularly discloses novel pesticide spraying equipment. The novel pesticide spraying equipment comprises a box body, walking wheels, stirring rod assemblies, a spiral stirring paddle, a driving motor, a swinging rod, a guide column, a nozzle and a liquid pump, wherein damping supporting parts are arranged at the ends of a supporting base, and each walking wheel is arranged at the bottom end of the damping supporting part; the spiral stirring paddle is arranged along the central axis in the box body, two stirring rod assemblies arranged in the box body are located on the two sides of the spiral stirring paddle respectively, a second driven gear is fixedly installed at the top end of the spiral stirring paddle, and the guide column is fixedly installed on the upper surface of the outer end of the second driven gear; and the left part of the swing rod is arranged on the guide column in a sliding mode through astrip-shaped through hole formed in the swing rod, and a spraying mechanism used for spraying pesticide in the box body is arranged at the other end of the swinging rod. According to the novel pesticide spraying equipment, the pesticide effect can be ensured; and moreover, the pesticide spraying range is wide, the using effect is good, and the agricultural production is facilitated.

Journal ArticleDOI
TL;DR: The objectives of this study were to simulate sprint canoe paddling, and investigate the contributions of the upper and lower limbs, and the trunk, to the propulsion during paddling.
Abstract: Sprint canoe paddling is a dynamic and complicated motion performed with the entire body of the paddler. Not only the upper limb motion, but also the motions of the trunk and lower limbs contribute to the propulsion. The objectives of this study were to simulate sprint canoe paddling, and investigate the contributions of the upper and lower limbs, and the trunk, to the propulsion during paddling. In the model, the paddler, paddle, and hull were represented as three rigid bodies, which were connected by virtual springs and dampers. The geometry of the paddler, paddle, and hull, as well as the joint motion of a paddler, was used in the model. It was found that the model could predict instantaneous hull velocity variation, although the average hull velocity was 8% lower than experiment. Two virtual paddling motions, “fixed lower limbs” and “fixed trunk,” were simulated. Comparing the measured original and the two virtual paddling motions, it was found that the lower limb motion during paddling contributed to the propulsion during the catch phase, when the blade entered the water until fully submerged (ratio of the contribution: 14% by upper limbs, 63% by lower limbs and 23% by trunk). It was also found that the upper limb motion contributed to the propulsion during the draw phase, when the paddler pulled the paddle backwards relative to the hull (54% by upper limbs, 30% by lower limbs and 16% by trunk), and that the trunk motion contributed to the propulsion just prior to the paddle exiting the water (7% by upper limbs, 30% by lower limbs and 63% by trunk).

Journal ArticleDOI
TL;DR: In this paper, a hole-flanging process by paddle forming through the use of finite element (FE) simulations was investigated, and an optimization of the paddle shape was conducted to prevent bulging at the clamped end while avoiding crack occurrence.
Abstract: This research investigates a novel hole-flanging process by paddle forming through the use of finite element (FE) simulations. Paddles of different shapes rotating at high speeds were used to deform clamped sheets with pre-drilled holes at their centers. The results of the simulations show that the paddle shape determines the geometry and principal strains of the formed flanges. A convex-shaped paddle forms flanges with predominant strains in the left quadrant of the forming limit diagram (FLD). However, the convex paddle promotes unwanted bulge formation at the clamped end of the flange. A concave paddle forms flanges with no bulge but the principal strains of elements in the middle section of the flange are in the right quadrant of the FLD which indicates an increased probability for crack occurrence. An optimization of the paddle shape was conducted to prevent bulging at the clamped end while avoiding crack occurrence. The paddle shape was optimized by mapping the deformation of some elements along the flange length to a pre-defined strain path on the FLD while maintaining the bulge height within the desired geometric tolerance. The radii and lengths of the paddle edge were varied to obtain an optimum paddle shape.

Journal ArticleDOI
TL;DR: The study reveals the need to look for better dissolution schemes for meloxicam tablets since USP paddle apparatus may not reflect properly the in vitro dissolution performance ofmeloxicam generic formulations and reference.
Abstract: Objective: To study the in vitro dissolution performance of four generic formulations of the poorly soluble drug meloxicam and the reference under hydrodynamic environments generated by flow-through cell method and USP paddle apparatus (pharmacopeial test). Methods: Dissolution method was validated according to ICH guidelines. Dissolution profiles were carried out with an automated flow-through cell apparatus (laminar flow at 16 ml/min with 22.6 mm cells) and USP paddle apparatus at 75 rpm. Phosphate buffer pH 7.5 at 37.0±0.5 °C was used as dissolution medium. Spectrophotometric determination of drug at 362 nm was carried out during 30 min. Dissolution profiles were compared with model-dependent and-independent methods. Results: Practically, all generic formulations showed significant differences with the percentage of drug dissolved at 30 min, mean dissolution time and dissolution efficiency, when USP paddle apparatus was used (*P<0.05), while only two generic formulations were different to reference using flow-through cell method. After adjustment to different mathematical equations, Weibull function was the best model to describe meloxicam dissolution performance and significant differences were found with all drug products when USP paddle apparatus was used, while only one formulation was different with flow-through cell method. Conclusion: The study reveals the need to look for better dissolution schemes for meloxicam tablets since USP paddle apparatus may not reflect properly the in vitro dissolution performance of meloxicam generic formulations and reference.

Patent
07 May 2019
TL;DR: In this paper, a cutting device with a clamping function for metal plate production is described, where a base plate is fixedly connected to the middle of the upper surface of a workbench, supporting legs are arranged at the lower end of the workbench.
Abstract: The utility model discloses a cutting device with a clamping function for metal plate production. Workbench, a base plate is fixedly connected to the middle of the upper surface of the workbench, supporting legs are arranged at the lower end of the workbench, linear motors are installed on the two sides of the base plate, an inner groove is formed in the front end of the upper surface of the baseplate, a clamping mechanism is slidably connected to the inner side of the inner groove, and three cutting grooves distributed at equal intervals are formed in the middle of the upper surface of the base plate. According to the utility model, the clamping mechanisms are arranged at the two ends of the upper surface of the substrate; the sheet metal part can be conveniently and quickly clamped andfixed; the linear motor drives the cutting mechanism to move horizontally; the front-and-back position of the cutter can be adjusted conveniently, then sweeps in the cutting groove can be cleaned conveniently, the rotating paddle is arranged on the front side of the cutter, the rotating paddle rotates along with the rotating paddle in the rotating process of the cutter, the rotating paddle can accelerate circulation of air around the cutter, and then a certain cooling effect on the cutter is achieved.

Patent
15 Mar 2019
TL;DR: In this paper, a suspended shooting UAV with a spiral paddle airproof hood is described, and a camera is mounted on the bottom of the bottom gear and a transmission rack.
Abstract: The invention discloses a suspended shooting unmanned aerial vehicle with a paddle airproof hood. The unmanned aerial vehicle structurally comprises an unmanned aerial vehicle main body, an electronicspeed regulator, a spiral paddle, a semi-arc-shaped choke hood, an umbrella-shaped protecting rack, fixed supporting legs, a charging socket and a high definition camera. When the unmanned aerial vehicle suspended in air is pushed by a relatively strong wind power air flow, a guide hood can pass inward along with the resistance of the air flow to rotate directionally with a spiral guide rod so asto twist a half circle return shaft to rotate by means of a supporting platform, so that a bottom gear and a transmission rack are continuously engaged to move and push a force transfer column to stretch out to obtain an elastic force, so that two slide blocks in a retainer rack slide separately along a special arc-shaped guide rail and a spring condensed at the tail end is touched in the quick sliding process to deform and generate power. A plurality of push rods drive the telescopic hood plate to slide upward to be unfolded to isolate and separate the spiral paddle and air power, so that the unmanned aerial vehicle flies at a normal uniform rotating speed to balance the gravity of center. The unmanned aerial vehicle can suspend and stay at a fixed point, and the shake of the camera is reduced to photograph the ground clearly.

Patent
14 May 2019
TL;DR: In this article, the authors presented a multiple point mooring anchor and paddle joint cooperative positioning system and method of ship ocean engineering, which has the advantages of stability, high efficiency, energy saving and low cost are brought to maritime work positioning items, the resource utilization rate of propulsion equipment is high, the capacity of moorings equipment is further decreased, and important practical significance and promotional value for improving competitiveness of the positioning items such as offshore drilling and oil production are achieved.
Abstract: The invention provides a multiple point mooring anchor and paddle joint cooperative positioning system and method of ship ocean engineering. The multiple point mooring anchor and paddle joint cooperative positioning system comprises an upper computer, a mooring winch control system and an electric propulsion control system; the mooring winch control system comprises four sets of windlass systems which are connected together through a first field bus to constitute an annular network; the electric propulsion control system comprises four sets of electric propulsion systems which are connected together through a second field bus to constitute an annular network; and the first field bus and the second field bus are connected together to achieve isochronous and synchronous control over the mooring winch control system and the electric propulsion control system. The multiple point mooring anchor and paddle joint cooperative positioning system and method have the advantages that through multiple point mooring anchor-paddle joint cooperative positioning, the advantages of stability, high efficiency, energy saving and low cost are brought to maritime work positioning items, the resource utilization rate of propulsion equipment is high, the capacity of mooring equipment is further decreased, and important practical significance and promotional value for improving competitiveness of the positioning items such as offshore drilling and oil production are achieved.

Patent
29 Jan 2019
TL;DR: In this article, a dynamic control method for kerosene desulfurization and stirring is presented. But the method for dynamically adjusting the speed and the insertion depth of the stirring paddle is adopted, so that the reaction dead zone of molten iron in a molten iron tank is reduced.
Abstract: The invention provides a dynamic control method for KR desulfurization and stirring. After KR desulfurization is started, when a stirring paddle drops to the target position and the rotation number reaches more than 90% of the rated rotation speed, a first-stage PLC sends the rotation number n of the stirring paddle to a second-stage computer. The second-stage computer starts a stirring paddle dynamic control program. The dynamic control method comprises the following steps that 1) timing is started, and after 3-5 min, the stirring paddle is reduced by 50-100 mm, the falling speed of the stirring paddle is 1-3 m/min, and the stirring time is 30-60 s; 2) the stirring paddle is lifted by 80-150 mm, the lifting speed of the stirring paddle is 1-3 m/min, and the stirring time is 30-60 seconds;3) the stirring paddle is reduced by 30-50 mm, and the falling speed of the stirring paddle is 1-3 m/min; 4) the stirring paddle continues to desulfurize for 1-2 min, and the action of the first stage is ended; and 5) and the position of the stirring paddle which is returned to the stirring paddle dynamic control program to be started is the target position in the step 1). The method for dynamically adjusting the speed and the insertion depth of the stirring paddle is adopted, so that the reaction dead zone of molten iron in a molten iron tank is reduced, and the desulfurization efficiency isimproved under the condition that the number of desulfurizing agents is not increased.

Journal ArticleDOI
TL;DR: In this article, the authors describe how the use of the performance verification test (PVT) ensures the accuracy of dissolution results by understanding and controlling the variability of the dissolution results, using a specially formulated tablet containing prednisone in the role of the reference standard material.
Abstract: Performance qualification of the United States Pharmacopeia (USP) paddle apparatus (USP apparatus 2), as described in USP General Chapter <711> Dissolution, requires a demonstration of the dissolution behavior of a standard material as well as control of the mechanically measurable parameters of the apparatus. The USP performance verification test (PVT), an integral part of <711>, plays an important role in demonstrating the apparatus suitability and addressing the interlaboratory variability of dissolution results by using a standard procedure and reference standard material. The USP has used a specially formulated tablet containing prednisone in the role of the reference standard material that has been shown to be sensitive without undue variability. This paper describes how the use of the PVT ensures the accuracy of dissolution results by understanding and controlling the variability. This paper provides an overview of the following: the dissolution test; the mechanics of the test and associated hydrodynamics; the PVT reference standard; PVT and mechanical qualification.

Patent
11 Jan 2019
TL;DR: In this paper, a model selecting method for determining the variable pitch motor and the driver of a wind generating set variable pitch system was proposed, where the 1s root-mean-square value was used for determining limit parameters, namely maximum torque of the motor and short-time output maximum current parameter, corresponding to the maximum torque, of the driver.
Abstract: The invention discloses a model selecting method for a motor and a driver of a wind generating set variable-pitch system The model selecting method comprises the following steps of: establishing a simulation model on a simulation platform, performing simulation calculation, and outputting a blade root load data time sequence file under each working condition; separately calculating a 1s root-mean-square value time sequence of paddle blade root torque, paddle rotation speed and paddle mechanical power of each time sequence file under each working condition, and calculating a 600s root-mean-square value time sequence of the paddle blade root torque, the paddle rotation speed and the paddle mechanical power of each time sequence file under each working condition; drawing an envelope line ofpoints in a torque-rotation speed scatter diagram, and selecting the variable-pitch motor and the driver according to the envelope line, wherein the 1s root-mean-square value is used for determining limit parameters, namely maximum torque of the motor and the short-time output maximum current parameter, corresponding to the maximum torque, of the driver, and the 600s root-mean-square value is usedfor determining nominal parameters, namely nominal torque of the motor and the nominal output current parameter, corresponding to the nominal torque, of the driver The model selecting method solvesthe selecting problem of determining the variable-pitch motor and the driver of a wind generating set

Journal ArticleDOI
TL;DR: It is suggested that it may not be possible to predict both the PK profile and initial burst using a single analysis method and it is recommended that evaluation of the initial burst be performed separately.
Abstract: The aim of this study was to establish a novel approach to in vitro dissolution evaluation using a combination of the paddle method and a dialysis membrane, both to predict the overall in vivo performance of tacrolimus microspheres and also to identify a suitable dissolution test method to describe the in vivo initial burst phenomenon. This new dissolution method for evaluating the release of tacrolimus from microspheres consisted of rotating a customized paddle inside a dialysis membrane using a conventional paddle apparatus. Findings were compared with a method in which the paddle was rotated outside the dialysis membrane, the conventional paddle method, and the flow-through cell method. We concluded that the paddle method with a dialysis membrane and internal agitation, which was designed to mimic in vivo conditions, predicted the overall pharmacokinetic (PK) profile of tacrolimus microspheres whereas the conventional paddle method described the initial burst. These findings suggest that it may not be possible to predict both the PK profile and initial burst using a single analysis method. We therefore recommend that evaluation of the initial burst be performed separately. In conclusion, we propose that combination of the paddle method with a dialysis membrane and internal agitation to evaluate the overall PK profile, together with the paddle method to describe the in vivo initial burst, represents a novel approach to in vitro dissolution evaluation for microsphere formulations.

Proceedings Article
01 Jan 2019
TL;DR: This study provides a novel perspective on digital platform dynamics by applying a stochastic cellular automaton (CA) as a promising instrument of inquiry to investigate the impact of social and technical openness on platform growth.
Abstract: This study provides a novel perspective on digital platform dynamics by applying a stochastic cellular automaton (CA) as a promising instrument of inquiry to investigate the impact of social and technical openness on platform growth. Owing to the dynamism of digital platforms caused by technological complexity, network effects, and developer-level factors, there is limited understanding of how earlystage platform owners can successfully sustain platform growth. Research suggests two growth strategies: Adjusting the openness of technical platform resources and governing the developers’ accessibility of the distribution channel. Based on experiments that leverage a stochastic CA, we show that platform growth can be achieved through three disparate growth strategy configurations. Our paper contributes to research by synthesizing the technology, market, and individual levels of platform growth analyses through a novel methodological account, and by offering theoretical propositions for future research. Our results can guide platform owners to scrutinize their growth strategies.

Patent
05 Feb 2019
TL;DR: In this paper, a multi-position user-support device for a stand-up paddle board includes a base configured to mount on a paddle board, and a support post with a pad connected thereto to support a user's weight while leaning or sitting thereon.
Abstract: A multi-position user-support device for a stand-up paddle board includes a base configured to mount on a stand-up paddle board, and a support post with a pad connected thereto to support a user's weight while leaning or sitting thereon. The support post is rotatably mounted to the base, with a spring component configured to maintain a return force on the support post when rotated toward a rear of the stand-up paddle board in a stored position. A spring-activated latch retains the post in the stored position until released by the paddler. The post may include a telescopic portion to adjust its length. The device may also include a seat attachment.

Patent
21 Jun 2019
TL;DR: In this paper, a reaction kettle was designed to prevent the inner wall of a jacketed kettle wall from gelatinizing, and the reaction kettle contained a kettle body, a material inlet formed in the side wall of the kettle body and a material outlet formed at the bottom of the body.
Abstract: The utility model discloses a reactor capable of preventing a jacketed kettle wall from being gelatinized. The reaction kettle comprises a kettle body, a material inlet is formed in the side wall of the kettle body; a material outlet is formed in the bottom of the kettle body; a heating jacket is arranged on the outer wall of the kettle body; a jacket inlet and a jacket outlet are formed in the heating jacket; a stirrer is arranged in the kettle body; the stirrer comprises a stirring shaft, a first paddle and a second paddle; one end of the stirring shaft extends out of the kettle body and ismovably connected with a stirring motor; a first arc-shaped mounting plate is arranged at one end of the first paddle, a second arc-shaped mounting plate is arranged at one end of the second paddle, the first arc-shaped mounting plate and the second arc-shaped mounting plate clamp one end of the stirring shaft and are fixed through bolts, and trapezoidal scraping plates are arranged on the sides,facing the inner wall of the kettle body, of the first paddle and the second paddle. According to the reaction kettle, high-concentration liquid can be heated and mixed, and the situation that the inner wall of the kettle body is coked is effectively avoided.

Patent
01 Feb 2019
TL;DR: In this paper, the utility model relates to the field of garden tree planting, and a spiral soil digging paddle is arranged on the machine base and located behind the cab, the spiral soil-digging paddle is driven by a rotary disc on the spiral dirt-draining paddle to rotate and a soil cleaning disc is rotationally installed at the position, where the spiral-drifting paddle is located, of the bottom face of the machine and surrounding the spiral digging paddle.
Abstract: The utility model relates to the field of garden tree planting. The garden tree transplanting device comprises a base, machine base, a cab is fixedly mounted at the upper end of the base close to thefront end; two lifting ropes are connected to the lifting rod, a first clamping ring is connected to the lifting ropes, a second clamping ring is connected to the first clamping ring, the first clamping ring and the second clamping ring are each of an open-loop structure, locking rods are arranged on the first clamping ring and the second clamping ring, one end of the first clamping ring and one end of the second clamping ring are free ends, and the other end of the first clamping ring and the other end of the second clamping ring are fixed to the locking rods. A spiral soil digging paddle isarranged on the machine base and located behind the cab, the spiral soil digging paddle is driven by a rotary disc on the spiral soil digging paddle to rotate, and a soil cleaning disc is rotationallyinstalled at the position, where the spiral soil digging paddle is located, of the bottom face of the machine base and surrounds the spiral soil digging paddle. The two clamping rings are arranged and fixed from the upper portion and the lower portion of the tree, the tree can be prevented from being broken in the upward tree pulling process, and the integrity of the tree is guaranteed.

Patent
15 Jan 2019

Patent
21 Nov 2019
TL;DR: The rail saver with a handle has a handle that extends laterally away from the rail, creating a "loop" which the user can grab to maintain control over a water sports vehicle as discussed by the authors.
Abstract: The invention is directed toward a “Rail saver with a handle. The rail saver has a handle the extends laterally away from the rail saver, creating a “loop” which the user can grab to maintain control over a water sports vehicle such as a long board, SUP, foil board, sail board, body board and other water sports vehicles. The “rail saver with a handle” is designed to add the functionality of being able to grab and control a free-floating board while in water. Grabbing and controlling an SUP board is also difficult while holding a paddle. This new functionality provides an opportunity to control a board with one hand whether or not you are holding a paddle. By holding and using the handle, the board rider avoids injury to his fingers or hands from grasping at a leash cord that is not designed to be grabbed.

Patent
01 Oct 2019
TL;DR: An exercise device handle for an exercise device comprises a handle tube including a straight portion, at least one bent portion, and opposite ends; and a stand-up paddle boarding (SUP) grip at one or both of the opposite ends of the handle tube as mentioned in this paper.
Abstract: An exercise device handle for an exercise device comprises a handle tube including at least one straight portion, at least one bent portion, and opposite ends; and a stand-up paddle boarding (SUP) grip at one or both of the opposite ends of the handle tube.

Patent
Xu Bin, Jin Jianxia, Ma Gang, Liu Ziming, Lin Ran 
14 Jun 2019
TL;DR: In this article, a ducted triphibian UAV is demonstrated to fly in the air, on the ground and on the water surface, and to move forward on a water surface.
Abstract: The utility model relates to a ducted triphibian unmanned aerial vehicle. The air conditioner comprises a shell provided with a ducted hole and a ducted fan arranged in the ducted hole. Paddle wheelscapable of supporting the shell to walk on the ground and move forwards on the water surface are further arranged at the bottom of the shell, the paddle wheels are driven by a driving device arrangedin the shell, and paddle plates which rotate along with the paddle wheels and are used for stirring water are arranged on the paddle wheels. The ducted triphibian unmanned aerial vehicle disclosed bythe utility model not only can fly in the air, but also can freely advance on the ground and the water surface, so that the unmanned aerial vehicle can finish specific tasks such as sampling, monitoring and the like in the air, on the ground and on the water surface, and the application range of the ducted unmanned aerial vehicle is greatly expanded.