Showing papers on "Diffuser (sewage) published in 1979"

Muffler for internal combustion engines and method of manufacturing same

Abstract: A muffler for use with internal combustion engines or the like having improved sound attenuation capabilities together with lower back pressure. The muffler has an elongated outer casing connected to inlet and outlet pipes by inlet and outlet transition sections. A central diffuser body is located within the outer casing substantially along the longitudinal centerline thereof. Mounting plates connect the front and rear ends of the diffuser body to the inlet and outlet pipes, respectively, to hold the diffuser body in place. An inner casing is spaced from, and conforms to, the inner surface of said outer casing between transition sections. The inner casing and the side wall of the diffuser body are perforated. Porous or fibrous sound absorbing material is contained within the diffuser body and between the inner and outer casings. The cross-sectional areas of the inlet pipe and the ring between the inner casing and the diffuser body are preferably substantially equal.

Bag-type filter apparatus with high pressure air jet cleaning

Abstract: The cleaning of a tubular filter bag supported by a tubular supporting cage positioned within the filter bag is significantly enhanced by the provision of an elongate air distributor pipe extending into one end of the filter bag and longitudinally along the interior of the supporting cage and filter bag, with the air distributor pipe having a plurality of air outlet openings therein for distributing compressed air throughout the interior of the filter bag. An elongate hollow diffuser tube extends longitudinally within the supporting cage and filter bag in surrounding relation to the air distributor pipe, the diffuser tube having perforations therein for diffusing and further distributing throughout the filter bag the compressed air which is discharged from the air distributor pipe.

Liquid aeration apparatus

Abstract: A removable light-weight, apparatus for the aeration of a body of water or other liquid in a tank or a pool having a submerged liquid source or inlet port supplying a continuous or a sporadic stream of liquid into said tank, said aeration apparatus comprising an air induction tube extending between and communicating at its upper and lower ends respectively with the ambient atmosphere and the liquid stream, and support means for said tube, the reduced pressure along the stream of liquid drawing air from the atmosphere into the liquid in the tank. A conduit may be provided coupled to the outlet of the liquid inlet port, the lower end of said air induction tube being inserted through the tubular wall of said conduit so as to permit the air in the lower end of the air induction tube to communicate with the liquid moving through the conduit, said conduit preferably terminating in a filter or a diffuser.

Bag-type filter apparatus with internal air diffuser

Abstract: The cleaning of a tubular filter bag when a periodic reverse purge of air is directed into the outlet end of the filter bag is significantly enhanced in accordance with the present invention by providing interiorly of the filter bag means for diffusing and distributing the reverse purge of air throughout the filter bag. More particularly, a hollow diffuser tube is provided extending longitudinally within the tubular supporting cage of the filter bag with one end of the diffuser tube communicating with the outlet end of the filter bag. The diffuser tube has perforations therein located for diffusing and distributing air throughout the filter bag when a periodic reverse purge of air is directed into the outlet end of the filter bag and into the diffuser tube.

Gas diffuser, aerator, or sparger apparatus

Abstract: Disclosed is novel apparatus and method for introducing various gasses into liquids. This as is commonly done in aerating or oxygenating liquids where growing aquatic life such as fish; instances concerning lagoon and pond treatment, absorption of oxygen in sewage or sewage -activated sludge mixture, introduction of chlorine or carbon dioxide gas into water for chemical treatment thereof. The method includes water treatment comprising the improved diffuser, aerator or sparger apparatus with the result of substantial enlargement in the known beneficial effects of such treatments; also, substantial and unexpected attendant benefit attributable to function of the diffuser apparatus. Principally the apparatus and method reduces the viscosity of water reducing the hydrogen bonding thereof at the time when presented for gas absorbtion. This when utilizing gas for aqueous liquid treatment or treatment of water with suspended pollutants.

Evacuation system with precondenser

Abstract: A high capacity evacuation system employing a precondenser receiving process fluids having liquid and gaseous phases, a first stage jet diffuser and a second stage liquid ring pump for handling the process fluids and in which system the motivating fluid for the jet diffuser is air; seal liquid is continuously fed from a seal liquid source outside the system; and the piping between the components of the system is unobstructed.

Centrifugal compressor with diffuser

Abstract: A centrifugal compressor including a one-piece diffuser ring having a circumferentially extending vaneless diffuser space for receiving compressed gas exiting the compressor impeller, and for guiding the compressed gas to a plurality of outwardly extending and circumferentially arranged diffuser channels each of generally circular cross-section.

Seal system for wellhead isolation tool diffuser

Abstract: A seal system for a wellhead isolation tool diffuser utilizing elastomeric cup-shaped seals installed on the exterior of the diffuser, which is inserted into the production tubing at the wellhead After insertion of the diffuser, the production tubing is pressurized, and the seals are set against the interior of the production tubing by the pressure in the well, effecting a tight seal

Soil water purifying method

Abstract: PURPOSE:To ensure the purification of the soil water with a high efficiency of treatment, by carrying out the primary exposure to air via the air and then secondary exposure to air via the high-concentration oxygen gas each for the exposure of the liquid containing the soil water and the active sludge to air. CONSTITUTION:The soil water flowed in goes into the primary exposure-to-air room 6 through the pipe 16 to receive the supply of the air which is blown in from the diffuser 9. After this, the soil water goes into the secondary exposure-to-air room 8 via the settler 7 to receive a treatment of exposure to air by the high-concentration oxygen gas, and then enters the treatment bath 1. In this method, the problem of the CO2 accumulation due to the treatment of the oxygen gas can be eliminated for the exposure to air with use of a small amount of oxygen. Furthermore, the decomposition of the active sludge can be avoided.

Diffuser for wellhead isolation tool

Abstract: An improved diffuser for a wellhead isolation tool which employs a combination of angles in its bore. This improvement reduces the incidence of erosion caused by the flow of fluids through the diffuser, in both the well production tubing adjacent the end of the diffuser and in the diffuser itself.

Rotational frequency fluctuation depressor for twooshaft gas turbine

Abstract: PURPOSE:To minimize the rotational frequency fluctuation of two-shaft gas turbine, by providing a bypass to conduct a part of compressed air to a diffuser downstream of an output turbine when the rotational frequency of the twoshaft gas turbine fluctuates.

Sludge diffusion method and apparatus

Abstract: A diffuser for the treatment of waste sludge utilizes low pressure air injected from below to produce a bed capable of being handled as a fluid such as to permit pumping from a sedimentation basin to a tank truck for transport to a point of use or disposal. A system of air discharge pipes strategically located in the basin below the sludge connects with common air receiving manifold at the periphery of the basin, and a complete valve arrangement permits control of the air discharge to accommodate for all types of sludge under various conditions as required prior to and during emptying of the contents of the basin.

Exhausttgas diffuser for internal combustion engine

Abstract: PURPOSE:A diffuser which can lower the temperature at the exhaust gas flow center part. CONSTITUTION:A diffuser 2 is installed at the rear end part 1 of a tale pipe. Said diffuser 2 is constituted of a flat housing 5 consisting of an upper housing 3 and a lower housing 4. In the housing 5, a hollow tube element 9 is arranged which extends in at a right angle to the exhaust gas flow, crossing the inside chamber of the housing 5, Both open ends of the pipe element 9 are inserted into the opening 10 formed on the wall of the pipe element 9. Thus, air is drawn into the exahsust gas through the holes 11 and 13, and the exhaust gas is cooled.

Further investigations of diffuser augmented wind turbines. Part 2. Technical report. Final report

Abstract: A multiphased investigation is described which involves three test facilities of several compact diffuser approaches. Screens, to simulate a wind turbine, and a three-bladed, fixed-pitch turbine have been with the diffuser models. A candidate baseline design is described and some of the key issues are discussed that can lead to future full scale implementation.

Optical illumination device

Abstract: PURPOSE:To achieve an optical illumination device which can avoid the uneven condensing and increase the reliability regardless of the filament shape and the installing conditions of the light source, by providing an optical diffuser.

Lighting unit with suspended diffuser - has catches engaging with diffuser plate hooks extending beyond casing

Abstract: The lighting unit comprises a casing open along its horizontal base and containing one or more light sources working with a reflector aimed downwards. A removable light diffuser is a clearance fit in the base, and comprises a flat horizontal plate of translucent material suspended in the casing. One or more hooks (7) extend upwards from the edge of the plate (5), being open towards the underside and engaging with catches (61, 6) pendulum-suspended on horizontal axes (62) on the casing periphery. Each catch extends beyond the casing and diffuser and through the gap left between them so as to form a control finger (64).

Diffuser drape configuration

Abstract: The invention relates to diffuser drapes and has a particular application to drapes such as those used in surgical operations. Diffuser drapes have been proposed with a substantially elliptical aperture defining a work area which is surrounded by an inflatable clean air duct means integral with the drape. The clean air duct means has a diffuser therein surrounding the aperture and shaped so diffuse low velocity clean air radially through the diffuser inwardly across the aperture from opposite sides thereof to provide a resultant flow away from the aperture and upwardly and partly outwardly of the work area about the upper edges thereof. One of the problems faced with this type of drape is that of manufacturing the diffuser in an economical fashion. In the present invention the diffuser comprises an upper diffuser part and a bottom diffuser part joined by a seam adjacent the periphery of the work area, the bottom diffuser part having an effective area of between approximately 50% less than and approximately 20% greater than the said work urea. The top diffuser part has an annular width of approximately 3 inches and an area sufficient to provide a class 100 clean station air flow pattern adjacent the work area.

Photometric testing apparatus

Abstract: A testing apparatus for making photometric measurements with a light beam having a spatially ill-defined energy distribution. A detector (29,30; 91) for receiving the light beam and having a spatial variation in its sensitivity over its sensing area. A diffuser (91,97) is provided which is disposed in the light beam for intercepting the light beam before it strikes the detector. The diffuser is formed of a white-like plastic and has a thickness which decreases progressively towards the outer edged of the same to compensate for the fall-off in sensitivity of the detector to rays closer to the outer margins of the diffuser or away from the center of the diffuser. The diffuser is formed in two portions in which a portion (97) of the diffuser is in substantially closer proximity to the detector (91) than the other portion to minimize the directional sen- sitivity of the detector.