Showing papers on "Bell mouth published in 2017"

Corresponding lock pin of laser fiber and cooperation mounting structure and fiber connector thereof

Abstract: The utility model provides a corresponding lock pin of laser fiber and cooperation mounting structure and fiber connector thereof can greatly alleviate the heat accumulation, improves the validity of fiber optic coupling. The lock pin entry of this laser fiber connector is the funnel pattern, and lock pin entry terminal surface sets up bell mouth and inside axle center passageway intercommunication promptly, the part that the axle center passageway is close to the bell mouth satisfies the tight fit with the laser fiber who treats the installation location. The interior side surface of bell mouth had better satisfy the diffuse reflection condition. Like this, side surface in the bell mouth is beaten to the laser speckle, makes the energy be the index through the reflex action and descends (had better produce complete diffuse reflection, avoid light to assemble), greatly lighten the heat accumulation. When especially installing high power laser optic fibre, the terminal surface is close to the big terminal surface parallel and level of the big terminal surface inclusive AND bell mouth of bell mouth before the optic fibre, has avoided hot accumulation to the ablation of fiber end face, improves the validity of fiber optic coupling.

Method for calculating lifting lug position for bell mouth

Abstract: The present invention relates to a method for realizing three-dimensional modeling of a bell mouth mounted on a hull, comprising: (a) a step of converting a bell mouth model cross-sectional diagram calculated by three-dimensional measurement into an actual scale; (b) a step of connecting calculated bell mouth cross-sectional surfaces which are separated at a certain angle in order to complete the bell mouth modeling; and (c) a step of calculating a lifting lug point while the completed modeling is maintained in a set posture. Accordingly, the weight and center of gravity of the bell mouth can be precisely calculated by realizing the three-dimensional modeling of the bell mouth, and the lifting lug position can be calculated based on such information. Thus, it is not required to rework mounting the bell mouth on the hull, and productivity can be drastically improved.

Anti-icing system at gas turbine compressor bell-mouth and Inlet Guide Vane (IGV)

Abstract: Anti-icing system is generally used in order to prevent ice formation at gas turbine compressor bell-mouth and inlet guide vanes (IGV) in cold climates, which is caused by air pressure drop and velocity rise and consequent mechanical damage and performance deterioration. Ice formation at the compressor bell-mouth and on the inlet guide vanes is depended on variant parameters including: ambient air temperature, relative humidity of the environment, air velocity at compressor bell-mouth and IGV and metal surface temperature of ice formation location. In two frequent conditions ice may be formed; 1-water droplet existence in liquid or solid phase and in the shape of snow, rain and other precipitations. 2-Existence of vapor condensation in inlet air way that is because of temperature depression and velocity rise. Anti-Icing system by which extracting of hot gas from mid/last-stage of compressor (this method is the most popular methods for anti-icing system), increase inlet air temperature till inlet air in bell-mouth and IGV location gets far from ice forming condition. Extraction of air from compressor is caused performance degrading of gas turbine approximately 2∼5% in power and 1∼2% in efficiency depend on extracted flow rate. So accurate determination of operation limit of Anti-Icing system has great effect on gas turbine performance and its fuel consumption.

Blower and outdoor unit for refrigeration cycle device

Abstract: PROBLEM TO BE SOLVED: To provide a blower that reduces frictional loss occurring at a bell mouth to reduce noise and improve efficiency, and to provide an outdoor unit for a refrigeration cycle device.SOLUTION: A blower 100 includes a propeller fan 1 and a bell mouth 13. The bell mouth includes an inlet part 18, an outlet part 19 and a duct part 17 and, in a rotation angle position having the largest value of an inlet reduction rate L2/L1, has an outlet length H smaller than the other rotation angle positions and a flare angle Θ smaller than the largest value.SELECTED DRAWING: Figure 2

PCB bell mouth manufacturing method

Abstract: A PCB bell mouth manufacturing method comprises the following steps: 1, selecting a taper drill bit according to the bell mouth sizes; 2, calculating a drilling depth according to the client required bell mouth orifices bore diameter, and writing the result into a bell mouth boring program; 3, working in order according to a routine boring flow: a, mounting a joist plate; b, planting pins; c, loading a backing plate; d, loading a drilled plate; e, covering an aluminium sheet and pasting a gummed paper; f, starting a machine part mushroom head to press the aluminium sheet; g, covering a cold punching plate and using a gummed paper to firmly paste on same; 4, using an universal meter to confirm the aluminium sheet is connected with a drilling crew table top, and ensuring the unique coupling conduction portion between the aluminium sheet and the drilling crew table top is the mushroom head; 5, boring. The method calculates the drilling depth according to the tapper drilling bit angle and inputs the program, and the drilling crew can automatically make the bell mouth; the method is high in efficiency, and can make the precise bell mouths.

Outdoor machine and air conditioner provided with same

Abstract: In a casing (21) of this outdoor machine (11), a heat exchanger (23), an axial fan (25), a bell mouth (27), a fan motor (29), and a streamlining plate (37) are arranged. The casing (21) includes: a front panel (33) provided with an air outlet (21b); and a rear panel (35) provided with an air inlet (21a). The bell mouth (27) and the streamlining plate (37) are arranged on the inner surface of the front panel (33). The bell mouth (27) has: a first opening that is open toward the heat exchanger (23); and a second opening (27b) that is open toward the air outlet (21b). The streamlining plate (37) is arranged so as to incline from a prescribed position in the inner surface of the front panel (33) to a side where the bell mouth (27) is arranged.

Eddy-eliminating device for removable type pump sump

Abstract: The invention provides an eddy-eliminating device for removable type pump sump comprising an upper cover plate and a lower cover plate installed on an inlet water pipeline of the pump in the sump. The inlet water pipeline of the pump is composed of an inlet water pipe and an inlet bell mouth fixed on the end of the inlet water pipe. The center of the upper cover plate is provided with a round hole and the upper cover plate is sleeved and fixed on the inlet water pipeline of the pump through the round hole. The internal diameter of the round hole is matched with the external diameter of the fixing place of the inlet water pipeline of the pump on the upper cover plate. The lower cover plate hangs and fixes on the below of the inlet bell mouth. The upper cover plate and the lower cover plate are both horizontally disposed. The eddy-eliminating device has the advantages of moving according to the moving of the inlet water pipeline of the pump, being rational in structure, easy to manufacture, convenient to use and the flow pattern of the inlet bell mouth of inlet water pipeline of the pump is greatly improved. With the current becoming uniform, surface eddies and bottom eddies can be effectively prevented.

High-loop-stiffness PE double-wall corrugated pipe bell mouth structure

Abstract: Provided is a high-loop-stiffness PE double-wall corrugated pipe bell mouth structure. The bell mouth structure comprises a leading-in section, a bell mouth section and a connecting section, wherein the leading-in section and the bell mouth section are arranged in parallel, one end of the leading-in section is connected with one end of the bell mouth section through a buffer section, and included angles formed by the leading-in section and the bell mouth section and the connecting section are 5-10 degrees. The loop stiffness of a bell mouth is improved by designing annular reinforcing ribs so as to improve external pressure resisting capability. A leading-in angle and the inner diameter of the bell mouth are greater than the outer diameter of a pipe body to facilitate installation of a tubular product and a rubber ring. The water sealing effect of the bell mouth is improved by adopting the stripping slope design at the bell mouth section.

Study on the Effect of Bell Mouth Structure to Its Outlet Flow Field Evenness

Abstract: In this article a bell mouth junction assembled in front of the test article in practice was simulated by applying ANSYS CFX, the data of relative measurement points was picked up from the simulation result and compared with test data to validate the simulation reliability. Then, aiming to dwindle in the formal diameter of a standard designed bell mouth junction to satisfy assembling inside a small-diameter pipe in front of the test article, three remodeling schemes are introduced, and the validated simulation method is applied for the three. By comparing the simulation results, the effect of bell mouth inner wall profile to its outlet flow field evenness is obtained, furthermore, the location of aerodynamic interface plane (AIP) along the axis direction of junction is confirmed, and the optimized one of the three is elected. Introduction When processing a test for the compressor of an aeroengine, a bell mouth junction is generally assembled inside a straight pipe right in front of the test article inlet [1-4]. The facility is used to commute the intake air in a certain level and by the impact tubes assembled on AIP, total pressure of inlet is able to be obtained. Occasionally the inner wall profile of the bell mouth cannot be designed satisfying the relative standard, since its maximal formal diameter is barely too large to be embedded in when limited by the size of the straight pipe, for this reason the bell mouth has to be remodeled properly to satisfy this condition. Meanwhile, some technology methods should be taken to validate the schemes to reduce time and cost. In this article a bell mouth junction in practice in a high-pressure compressor test is simulated, the simulation result is taken to compare with test data with the parameters of relative measure points. It shows that there is enough accuracy for the simulation, which means the simulation method is reliable. Then, totally three types of remodeling schemes are imposed on designing a bell mouth with certain nominal diameter, which does not totally answer for the relative standard. Simulations are taken to obtain the flow field inside the junction, and compare the simulating results to select an optimized one. Standard Bell Mouth Junction Design Method and Remodelling Schemes The structure of the bell mouth junction can be seen in Fig.1. Figure 1. Structure of the bell mouth junction 242 Advances in Engineering Research (AER), volume 105 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016) Copyright © 2017, the Authors. Published by Atlantis Press. This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/). In the relative standard of compressor component test, the inner wall profile of a bell mouth and its construction formulation are given definitely, as is shown in Fig.2 and equation 1. Figure 2. Sketch of the bell mouth inner wall profile

Ceiling-embedded air conditioner

Abstract: PROBLEM TO BE SOLVED: To provide a ceiling-embedded air conditioner in which a parting line PL capable of becoming an inner surface of a bell mouth 7 does not become a draft resistanceSOLUTION: A turbofan 6 and a bell mouth 7 are arranged in a body unit installed in a ceiling The bell mouth 7 includes a suction guide part 72 gradually contracting its diameter toward the turbofan 6 and formed into a trumpet shape, and an enlarged diameter part 73 continuously formed to the suction guide part 72 and gradually enlarging its diameter On a parting line PL provided on an inner surface of the bell mouth 7 and on a boundary between the suction guide part 72 and the enlarged diameter part 73, provided is a step part 75 in which the enlarged diameter part 73 is more recessed to outside than the suction guide part 72SELECTED DRAWING: Figure 4

Tapered double machine barrel

Abstract: The utility model provides a tapered double machine barrel, including a cylindrical shel, the inner chamber of barrel is two bell mouths that are used for holding the twin -screw, angle between the axis of the crossing just bell mouth of bell mouth pore wall and the the central axis of barrel equals, the vertical cross sectional shape of two bell mouths is two centres of a circle and is located the crossing circle on the same water flat line, and the radius that is located two bell mouths on the same cross -section equals, two bell mouths of barrel reduce respectively from feed inlet to discharge gate gradually, circle center connection line's distance and single circle diameter ratio be 1: 1.15~1.25, axially inlay at the interval on the inner wall of barrel has wear resistant strip, the cylinder cavity surface is provided with the wearing layer. Its advantage lies in: crowded material is effectual, the wearing and tearing of barrel inner wall can be effectively reduced, the life of barrel is prolonged, wear resistant strip can be fixed with the wearing layer buckle, firm in connection, and the readily releasable is not adding man -hour, and the mixed powder can be placed in between the forked tail form convex part, and it is convenient to finalize the design, has both put forward high pressure heater work efficiency rate, and the barrel wearing layer of making is again evenly finalized the design effectually.

Hand is from dual -purpose and can just direction changing mechanical transmission mechanism

Abstract: The utility model relates to a hand is from dual -purpose and can just direction changing mechanical transmission mechanism. The output shaft is installed in the box, and power input - wheel, drive wheel are installed on the output shaft, and power input - wheel lower surface equipartition is provided with bell mouth on a plurality of, and the toper is downthehole on every is provided with a transmission ball, cross on the ferryboat installs the cylindrical table on the drive wheel, a transition wheel upper surface equipartition is provided with bell mouth under a plurality of, and in transmission ball the latter half dropped on down the bell mouth, mistake ferryboat lower surface periphery was equipped with two bosss, the connection of jump ring one end takes turns to in the transition, has the cylindric lock to pass in the jump ring other end, and the spring housing is on cylindrical table, and the upper and lower end of spring compresses tightly respectively connected ferryboat, drive wheel, immobilization connection between drive wheel and the output shaft, drive wheel upper surface periphery is equipped with the straight flute that matches with the boss. The utility model discloses do not need extra control mechanism when manual automatic switch -over, automatic function became invalid at once when removing outside automatic power supply absolutely, can not take place contrary transmission phenomenon during manually operation.

Aquaculture is with dissolving oxygen sensor probe

Abstract: The utility model provides an aquaculture is with dissolving oxygen sensor probe, includes the cylinder shell, connects in the safety cover of cylinder shell bottom soon, and the cylinder shell bottom is the toper section, and toper section surface machining has the external screw thread, and the bell mouth has been offered on the safety cover top, and processing has the internal thread in the bell mouth, and bell mouth and toper duan xuan connect sealedly, in toper section end stretches into the safety cover cavity, stretch into length for 13 of safety cover cavity height, the water inlet has been seted up to the nearly bottom of safety cover, and the delivery port has been seted up on the nearly top of safety cover, all be provided with the filter screen in water inlet and the delivery port. Simple structure prevents effectively that the probe from polluting, increase of service life and detection precision.

Fan motor vibration-proof structure for air conditioners and indoor unit of air conditioners

Abstract: This fan motor vibration-proof structure for air conditioners is equipped with: a body which has a suction port at the top thereof and a blowout port at the bottom thereof; and a propeller fan assembly which is disposed at an upper portion within the body, and blows out the air sucked in from the suction port to the blowout port. The propeller fan assembly has a propeller fan, a fan motor driving the propeller fan, and a bell mouth body. The bell mouth body has: a cylindrical bell mouth portion surrounding the propeller fan; a fan motor fixing portion disposed at the center of the bell mouth portion; a coupling portion that couples the bell mouth portion and the fan motor fixing portion; and mounting portions for mounting the propeller fan assembly. The fan motor is fixed to the fan motor fixing portion of the bell mouth body and the propeller fan, and is formed integrally therewith. The propeller fan assembly is mounted, at the mounting portions, with three or more vibration-proof members interposed therebetween, to a member of the body to which the propeller fan assembly is mounted.

High altitude construction car rotary driving mechanism

Abstract: The utility model provides a high altitude construction car rotary driving mechanism, characterized by: the bian kou position system of being close to at the bedplate has the bell mouth, the bell mouth big awl port upwards, set up one in the bell mouth and have a same tapered tapered plate with the bell mouth, tapered plate's last plane exceeds the last plane of bedplate, the last system of tapered plate has a through -hole, central line and tapered plate's the central line of through -hole have eccentric distance, it is together fixed with tapered plate that the hydraulic motor axle passes the through -hole, punches in the middle of the annular clamp plate and cup joint on hydraulic motor, is in the same place with bolt and bedplate are fixed to compress tightly tapered plate, at fixed pinion of the epaxial installation of hydraulic motor, the pinion support the tooth intermeshing on the outer lane with the gyration, low cost or the like.

Outdoor machine of air conditioner and air blower

Abstract: PROBLEM TO BE SOLVED: To prevent damage due to freezing of rainwater or the like, in an outdoor machine of an air conditioner.SOLUTION: An outdoor machine of an air conditioner includes a propeller fan and a bell mouth arranged around the propeller fan. The bell mouth has a step part (402) stepwisely enlarging toward a blowout direction of the propeller fan. Each part of an inner surface of the step part (402) has an inclination angle (angle of θ or more) at which adhering water droplets flow down to a horizontal surface. More specifically, the step part (402) includes a plurality of substantially annular ring-shaped annular ring parts (404) having a blowout port opened upward and having the inclination angle (θ), and a plurality of cylindrical parts (406) connected to the annular ring parts (404).SELECTED DRAWING: Figure 5

Feedback main shaft cutter state information's structure

Abstract: The utility model relates to a feedback main shaft cutter state information's structure, including the organism, the axle core to and endwise slip supports and to connect the pull rod in the main shaft hole of this core, and the bottom of axle core is equipped with the bell mouth, has from top to bottom connected gradually plunger tip and slide core along its axial on the outer circumference of pull rod, is provided with in this slide core's the radial orientation can follow a core diameter to the gliding claw that draws of orientation, and the inductance loop has been cup jointed to its characteristics on the pull rod, correspond on the organism from top to bottom in proper order the interval be equipped with first sensor, second sensor and third sensor, the axle in -core still is equipped with air duct, and the one end that air duct kept away from the bell mouth is equipped with the compressed air entry, and the one end of being close to the bell mouth is equipped with the compressed air export that is linked together with the external world, and there is the pressure sensor who is used for detecting air pressure compressed air entrance still outer joint. This technical scheme can increase the feedback information to the tool condition information that the survey was got, ensures that the tool condition information of acquireing is accurate reliable, guarantees lathe operation safety.

Measure utensil of examining of fork axial cone angle of spot hole degree

Abstract: The utility model discloses a measure utensil of examining of fork axial cone angle of spot hole degree, including base and bell mouth detection piece, the bevel protractor has been put to the upper surface of base to fixed two side by side the locating pieces that are equipped with, the top of each locating piece is equipped with the tight piece in movable top, the bell mouth detects the piece and is rectangular form, and the lower part is equipped with the fork axle through -hole that transversely runs through, and the inside of bell mouth detection piece is equipped with and pitches the communicating vertical slide of lateral wall of a through -hole, and the slide is inside to be equipped with movable gauge head, and the upper end of slide is equipped with the handle of being connected with the gauge head. The utility model discloses, to pitch in the fork axle through -hole that penetrates bell mouth detection piece to aim at the epaxial bell mouth of fork and the top is tight with the gauge head, makes the bell mouth detect the piece along with the deflection that the axle produced the angle is pitched relatively to the gauge head, recycle the bevel protractor measure the skew angle can, convenient to use need not artifical meticulous adjustment, convenient to use, and the accuracy is high, can detect extensive applicability on the spot.

Ring channel piton hole static and dynamic pressure gas bearing

Abstract: The utility model provides a ring channel piton hole static and dynamic pressure gas bearing, the utility model relates to a ring channel piton hole static and dynamic pressure gas bearing. The utility model discloses an improve that static pressure gas bearing rigidity is little among the prior art, bearing capacity low, the interference killing feature is poor, the weak point of poor stability when the high speed operates. The bearing is the cylinder, the cylinder is opened along the axis direction has the axial hole, the cylinder has double multiunit air feed hole along the processing of radial equipartition, and every group air feed hole forms with the flow controller cooperation, the flow controller is by the throttle aperture, bell mouth and circular equalization tank constitute, throttle aperture and air feed hole communicate with each other, throttle aperture and bell mouth hole top communicate with each other, bell mouth hole bottom and circular equalization tank communicate with each other, and it connects multiunit air feed hole to lead to the groove a little along axial hole internal surface ring -opening shape on circular equalization tank, it logical groove communicates double air feed hole a little to open the axial along the axial hole internal surface again, the cylinder has wedge curved surface groove along the processing of circumference equipartition, the axial lead in every air feed hole all passes through the axis of cylinder, and quadrature.

Gas cylinder bottle screw processingequipment

Abstract: The utility model discloses a gas cylinder bottle screw processingequipment, including anchor clamps and cutter, anchor clamps include with gas cylinder bottom cooperation by the pagoda of bowls of cylinder driven and with the regional complex locating piece of gas cylinder shoulder arc, the locating piece has the bell mouth that air feed bottle bottleneck passed, is the cone angle of bell mouth 125 130, is the diameter of upper base circle 70 75mm, the bell mouth inner wall is leaned on to regional subsides of gas cylinder shoulder arc during processing. The utility model discloses utilize the common centre gripping of pagoda of bowls and locating piece to fix the gas cylinder, utilize the regional cooperation of circular arc of bell mouth and gas cylinder shoulder, the tapering in limit fixed cone shape hole and go up bottom circle diameter, guarantee the bell mouth paste lean on the gas cylinder the position diameter 100mm the near, be close to gas bottle opening, can reduce because of the center deviation that bottleneck processing and thermal treatment caused, the neck cutting point was riveted to this position the while, helped thread length's uniformity.

Congee is stuck with paste manufacturing automation and is thrown material device

Abstract: The utility model relates to a throw the material device, concretely relates to congee is stuck with paste manufacturing automation and is thrown material device. Including longmen frame, bell storage tank and electropneumatic controller, longmen frame top is equipped with the electro -magnet, and the electro -magnet below is equipped with iron disc, and iron disc passes through the connecting rod and is connected with conical rubber buffer, and conical rubber buffer is located the bell mouth of bell storage tank bottom, and the iron disc below is equipped with two springs of symmetric distribution, and the iron disc both sides are equipped with two arc guide plate of symmetric distribution, bell storage tank below is equipped with material receiving box, and material receiving box is located the electronic scale, and electronic scale and electro -magnet are connected with electropneumatic controller through the cable respectively, be equipped with microprocessor in the electropneumatic controller, the bell mouth zero clearance of conical rubber buffer bottom the bell storage tank, the length of spring is the half the of on iron disc lower surface to diaphragm surface vertical distance. The utility model has the advantages of reasonable structure design, labour saving and time saving, easy operation raises the efficiency, and the material is thrown in the measurement of being convenient for, and degree of automation is high.

Ceiling embedded type air conditioner

Abstract: PROBLEM TO BE SOLVED: To provide a ceiling embedded type air conditioner that reduces a draft resistance at a storage part of an electric component box of a bell mouth to prevent a decline in air blow volume and improves a balance of suction air inside the bell mouthSOLUTION: In the ceiling embedded type air conditioner, an air guiding part 74 is provided at a storage part 73 for mounting the electric component box 9 of the bell mouth 7 so as to cover lateral faces 94b, 94c facing each other inside the bell mouth 7 of the electric component box 9 and forms a part of a suction guide part 72, whereby air blowing toward a turbo fan after passing through the electric component box 9 is straightened at the air guiding part 74SELECTED DRAWING: Figure 5

Magnetic force automatically cleaning tap

Abstract: The utility model provides a magnetic force automatically cleaning tap, includes water intake cavity, there is an internal thread water intake cavity upper end, the screw thread lower extreme have the counter bore of placing sealed rubber ring so that with inlet tube sealing connection, there is the toper unthreaded hole at the water intake cavity middle part, the bell mouth is realized the circulation of rivers and is ended with the tapered plug cooperation, the tapered plug lower extreme has external screw thread and magnetism handle to be connected, the water intake cavity lower extreme has the internal thread and goes out the water end (W. E. ) lid to be connected. Upwards pushing up messenger's tapered plug when opening the switch hard and keeping away from the bell mouth, lower extreme magnetic force handle covers the actuation with going out the water end (W. E. ) simultaneously, maintains the tapered plug and opens the state. Overcoming magnetic force when closing the switch and making tapered plug and bell mouth laminating to drop -down magnetic force handle, the tapered plug bell mouth of can tightly laminating that is stressed under self pressure blocks the auto -lock of water manifold one -tenth in the water pipe. Be in magnetic force handle under the rivers health that can keep clean at any time, be superior to traditional tap. This magnetic force automatically cleaning tap abandons traditional spring as the power source, and the adoption magnetic force of innovation is as maintaining the power of maintaining that the switch was opened, and not only simply but also reliable, still easily production preparation can be widelyd popularize in public place and the high place of hygienic requirement for such structure.

Sensor leading out cable fixing device

Abstract: The utility model discloses a sensor leading out cable fixing device, the combined motor end cover comprises an end cover, offer the line hole that is used for wearing to establish the sensor leading out cable on the axial direction of end cover, the week side of end cover with the shell fastening of sensor, the end cover in the inside of shell is provided with and is used for the boss with fastener matched with, the opposite side of end cover is provided with the double -screw bolt, the inside bell mouth of having seted up of double -screw bolt, the bell mouth with the axis in line hole is the same, install the toper cutting ferrule in the bell mouth, set up jaggedly on the axial direction of toper cutting ferrule edge, install the swivel nut on the double -screw bolt, be used for with the after strain is squeezeed in to the bell mouth in in order to embrace to the toper cutting ferrule the leading out cable. The utility model discloses a sensor leading out cable fixing device has simple structure, connects reliably and occupies advantages such as small.

Diversified connecting piece

Abstract: The utility model discloses a diversified connecting piece, including square body, be equipped with a perforation that runs through the body on the body, the upper portion of body is equipped with the last lug of two symmetric distributions, goes up for two to be connected through last connecting block between the lug, upward be equipped with the last bell mouth that the diameter dwindles gradually on last lug width direction on the lug, the lower part of body is equipped with the lower lug of two symmetric distributions, is connected through lower connecting block between two lower lugs, be equipped with down the lower bell mouth that the diameter reduces gradually on the lug width direction under on the lug, the diameter of last bell mouth dwindles the orientation and descends the diameter of bell mouth to dwindle opposite direction, the both sides of body are equipped with detachable auxiliary block respectively. The utility model provides a pair of diversified connecting piece, its simple structure, connection stability is better, is difficult for rocking, and can selects whether to use auxiliary block as required, and a thing is multi -purpose, and the range of application is wider, has good application prospect, is worth promoting.

Outdoor unit and blower of air conditioner

Abstract: Provided is an outdoor unit of an air conditioner, and for the outdoor unit, damage due to the freezing of rainwater or the like is prevented To achieve the foregoing, the outdoor unit is provided with a propeller fan and a bell mouth disposed around the propeller fan The bell mouth has a stepped section (402) which enlarges in a step-wise manner toward a blow direction of the propeller fan Each section of the inner surface of the stepped section (402) has, with respect to a horizontal plane, an inclination angle (angle of Theta or more) such that adhered water droplets flow downward Morespecifically, the stepped section (402) has a blowout opening that opens upward, and has a plurality of substantially annular plate-shaped annular sections (404) having an inclination angle (Theta), and a plurality of cylindrical sections (406) joined to said annular sections (404)

Batch drilling well wellhead design and assembling-disassembling method for modular drilling machine

Abstract: The invention discloses a batch drilling well wellhead design and assembling-disassembling method for a modular drilling machine. The wellhead design comprises the following design of supporting facilities: wellhead deck design, split bell mouth design, bell mouth fixing mode design, bell mouth fixed suspension design, grouting pipeline fixed design of bell mouths, reflux pipes and metering pumps, bell mouth variable diameter design, bell mouth variable diameter hoisting special tool design, telescopic inner and outer drum horn tube design, sealing design of special pressure plate sealing or gas inflatable pneumatic tires, lifting pipe hoisting special design, and special lifting pipe suspending channel design which are easy enough to operate. The batch drilling well wellhead design and matched wellhead assembling-disassembling method for the modular drilling machine provided by the invention can solve the problem of time consumption caused by frequently moving of a derrick in batch drilling operation of the modular drilling machine, reduce hoisting risks and risks of high falling objects caused by dissembling and throwing wellhead parts and optimize assembling and disassembling method of wellheads, and further are simple and convenient in design and simple in operation mode.

Deformation-preventing device for evanescent mode ductile iron pipe fitting bell mouth

Abstract: The invention discloses a deformation-preventing device for an evanescent mode ductile iron pipe fitting bell mouth The evanescent mode ductile iron pipe fitting bell mouth is in a cylindrical shape The deformation-preventing device for the evanescent mode ductile iron pipe fitting bell mouth comprises a rotating shaft rod (3), sliding blocks (4) and multiple equally-divided sand rings (1), wherein the multiple equally-divided sand rings (1) are spliced to form a sand ring cylinder The outer surface of the sand ring cylinder is tightly attached to the inner surface of the evanescent mode ductile iron pipe fitting bell mouth (2), and every two adjacent connected equally-divided sand rings (1) are clamped to each other through the corresponding sliding block (4) Opening grooves matched with the sliding blocks (4) are formed in the two sides of the equally-divided sand rings (1) The rotating shaft rod (3) is arranged in the equally-divided rings (1) in a tapping manner First clamping teeth are arranged on the sliding blocks (4), and second clamping teeth engaged with the first clamping teeth are arranged on the rotating shaft rod (3) so that the sliding blocks (4) can be driven to slide in the length direction of the opening grooves According to the deformation-preventing device for the evanescent mode ductile iron pipe fitting bell mouth, the defects that in the prior art, sand rings cannot be well fixed to the end face of a bell mouth, and the size can only be fixed are overcome, and the evanescent mode ductile iron pipe fitting bell mouth can be prevented from deforming

Annular injection apparatus for wet compression

Abstract: A technical object of the present invention is to provide an annular injection apparatus for wet compression which enables sprayed droplets to maximally evaporate without being drained as condensate water, thereby reducing compression work of the compressor To this end, the annular injection apparatus for wet compression according to the present invention is an annular injection apparatus for wet compression which is used for a compressor including a nose cone and a bell mouth in an inlet of a flow path, in which droplets are sprayed to a portion except for portions directed toward the nose cone and the bell mouth

Centrifugal blower unit especially for motor vehicle air conditioning systems

Abstract: The invention relates to a centrifugal blower unit especially for motor vehicle air conditioning systems. The centrifugal blower unit for motor vehicle air conditioning systems having a fan wheel (8) in a spiral housing (1), wherein the spiral housing (1) corresponds to the shape of the fan wheel (8) and has a bell mouth region (3) and an axial intake opening (2), wherein a diaphragm (4) is arranged at the bell mouth region (3) of the spiral housing (1), being radially inward, whose diaphragm end region (5) bordering the intake opening (2) has at least one sharp edge.