1318results about "Specific fluid pumps" patented technology

Apparatus and methods are described including placing, into a subject's body, a blood-pump tube, with an impeller disposed within the blood-pump tube. At least one blood-pressure-measurement element extends to at least an outer surface of the blood-pump tube, such that the distal end of the blood-pressure-measurement element is in direct fluid communication with a bloodstream of the subject outside the blood-pump tube at a location that is proximal to blood-inlet opening(s) defined by the blood-pump tube. Blood is pumped through the blood-pump tube, using the impeller. Pressure of the bloodstream of the subject outside the blood-pump tube is measured by measuring blood pressure at the distal end of the left-ventricular blood-pressure-measurement element. Other applications are also described.

The invention relates to the technical field of high-pressure dredge pump simulation calculation, and discloses a construction and application method of a high-pressure efficient dredge pump simulation calculation model. A model is established based on dynamic fluid-solid coupling parameters (mud pulsating pressure, impeller dynamic stress and the like), soil multiphase rheological parameters (particle phase volume fraction, viscous resistance coefficient and the like) and pipeline transient resistance parameters (transient pressure drop gradient and the like), and factors such as rotating speed-power matching and the like are incorporated to calculate an operation envelope and a critical failure threshold. A multi-physics field coupling analysis system comprising parameter configuration, dynamic simulation (integrating a flow field and a structural vibration solver) and a safety evaluation module is developed, after actually measured data and self-defined parameters are input, dynamic flow velocity distribution, pressure pulsation characteristics and the like are obtained through fluid-solid bidirectional coupling calculation, and an optimal configuration scheme is generated. The system supports database management, multi-rheological model matching and three-dimensional visualization, the simulation precision and the engineering efficiency are improved, and support is provided for performance optimization and safety evaluation of the high-pressure working condition.

Apparatus and methods are described including a ventricular assist device that includes an impeller configured to be placed inside a left ventricle of a subject. A driving magnet is coupled to a motor and is rotated by the motor. A driven magnet is magnetically coupled to the driving magnet and is rotated by the driving magnet. A drive cable extends from the driven magnet and imparts rotational motion from the driven magnet to the impeller. A set of sensors is configured to detect a magnetic phase difference between the driven magnet and the driving magnet. A computer processor receives the detected magnetic phase difference and determines a physiological parameter of the subject, at least partially in response thereto. Other applications are also described.

A pump side part for use with a centrifugal slurry pump for pumping a fluid mixture containing particulate matter, the pump side part comprising a main body having a main axis, the main body including a side wall section which extends laterally with respect to the main axis and has opposite facing first and second sides, a plurality of formations on a surface of the second side including an inner formation and an outer formation in spaced relation to the inner formation, the formations being configured so that in use the formations generate a flow of the fluid mixture across the surface which detaches from the surface the particulate matter adjacent thereto.

An electric motor having a stator and a rotor in which the electric motor is an axial flux motor. The stator has a multiplicity of cores which, along a circumferential direction, are disposed beside on another on a common first diameter and are in each case surrounded by one coil. The rotor has a multiplicity of magnets which, along the circumferential direction, are disposed beside one another on a common second diameter on a support. Each magnet in the circumferential direction extends across a first angular range and the magnets are disposed so as to be mutually spaced apart by a second angular range formed by the support, which support is also heatable by the stator by induction. The second angular range is at least 30% of the first angular range.

The invention discloses a quantitative recognition device for the number and size of bubbles at a rotating impeller of a multiphase pump. The quantitative recognition device comprises a two-phase flow experiment system, the multiphase pump, a high-speed camera, a light source and the like. The preprocessing and data analysis system and the deep learning system are arranged in the computer; the two-phase flow experiment system and the image acquisition system are electrically connected with the computer through lines. The invention further discloses a quantitative recognition method for the number and size of the bubbles at the rotating impeller of the multiphase pump. According to the method, the problems of low blistering recognition precision, low efficiency and large error caused by the existing manual measurement method are solved, and a reference method is provided for exploring the influence of gas distribution at the impeller in the multiphase pump on pump operation and optimizing design of the multiphase pump.

The anti-blocking submersible pump comprises a pump body, the pump body comprises a driving part, a pump cavity part and a liquid inlet part, the pump cavity part is located between the driving part and the liquid inlet part, the pump cavity part is provided with an impeller, the driving part is provided with a driving rod, the liquid inlet part is provided with a liquid inlet cylinder and a cutting cylinder, the liquid inlet cylinder is arranged on the outer wall of the cutting cylinder in a sleeving mode, and the cutting cylinder is provided with an impeller. The cutting cylinder abuts against the inner wall of the liquid inlet cylinder, the cutting cylinder is connected with the driving rod, the liquid inlet cylinder is provided with a liquid inlet hole, the cutting cylinder is provided with a cutting hole, and the cutting hole is used for cutting aquatic plants. The cutting barrel is arranged, when strip-shaped foreign matter such as aquatic plants penetrates through the liquid inlet hole and the cutting hole to enter the liquid inlet part, the hole wall of the cutting hole of the rotating cutting barrel and the hole wall of the liquid inlet hole have the cutting effect similar to shearing through scissors, and therefore the situation that the aquatic plants enter and wind the impeller is reduced, and the situation that the liquid inlet barrel is blocked is reduced; the working stability of the pump body is improved.

The utility model relates to the technical field of mud pump trucks, in particular to mud pump truck pipeline anti-blocking equipment which comprises a truck body, the truck body comprises a base, a pump body is fixedly installed on the surface of the base, a feeding pipe is fixedly connected to the surface of the pump body, and a discharging pipe is fixedly connected to the surface of the pump body. Through the arrangement of the filter plate, large impurity particles in slurry can be intercepted, the large impurity particles can be filtered out, the situation that the large impurity particles enter the pump body and the inner side of the conveying pipeline, and consequently the pump body and the conveying pipeline are blocked can be avoided, the conveying effect of the pump body can be guaranteed, and the service life of the pump body is prolonged. And meanwhile, the screw rod rotates and drives the insertion rod to move, insertion and separation of the insertion rod and the insertion groove can be achieved, limiting and limiting releasing of the mounting rod are facilitated, then cleaning or replacement of the filter plate is facilitated, and therefore the filtering effect of the filter plate on large impurity particles can be guaranteed.

Apparatus and methods are described including an impeller (50) that includes a proximal bushing (64) and a distal bushing (58). Two or more helical elongate elements (52) extend from the proximal bushing (64) to the distal bushing (58), and an axial structure (54) is disposed inside of the two or more helical elongate elements (52), and along an axis around which the helical elongate elements (52) wind. The impeller (50) includes an impeller-overexpansion-prevention element (72). The impeller-overexpansion-prevention element is a single integrated structure that includes a ring (73) disposed around the axial structure (54), and a plurality of elongate elements (67) each of the elongate elements (67) extending from the ring to a respective helical elongate element (52) and being coupled to the respective helical elongate element (52) so as to prevent radial expansion of the impeller (50). Other applications are also described.

Oil lubricated supercritical fluid pumps with oil separators are disclosed herein. An example pump system to pressurize a fluid within a closed loop thermal transport bus disclosed herein includes a pump housing, a duct fluidly coupled to the pump housing, a first portion of the duct to include a mixture of an oil and the supercritical fluid, a second portion of the duct to include the supercritical fluid, and a separator positioned in a third portion of the duct between the first portion of the duct and the second portion of the duct, the separator to separate the oil in the mixture from the supercritical fluid.

The invention relates to the technical field of sewage pumps, and particularly discloses a multistage anti-blocking sewage pump which comprises a pump body and a connecting pipe arranged at the bottom of the pump body, and is characterized in that the anti-blocking sewage pump further comprises an anti-blocking assembly arranged in the connecting pipe, and the anti-blocking assembly comprises an anti-blocking cover movably arranged in the connecting pipe; the hair blocking assembly further comprises a rotating cylinder arranged at the bottom of the inner side of the connecting pipe, a protruding strip and a rotating rod piece are arranged on the inner side of the rotating cylinder, the rotating cylinder is arranged in the middle of the interior of the connecting pipe, a blocking strip is arranged on the outer wall of the rotating rod piece, and when the rotating rod piece rotates, the blocking strip drives the protruding strip and the rotating cylinder to rotate. Through the cooperation of the structure, hair can be blocked by the hair blocking cover, the situation that the hair directly enters the first-stage rotating cutter to cause winding is reduced, the situation that the hair is wound around a blade or an impeller to cause blockage and shutdown is avoided, and the anti-blockage effect of the sewage pump is improved.

The utility model provides an impeller structure with baffles at outlet parts of folded blades and a vortex pump. The impeller structure comprises a rear cover plate, a plurality of folded blades on the front end face of the rear cover plate, a plurality of back blades on the rear end face of the rear cover plate, the baffles on the folded blades and a hub in the center of the rear cover plate. The folded blade comprises a long blade section and a short blade section which are connected with each other, the baffle plate is vertically arranged on a pressure surface and / or a suction surface of the short blade section, the width of the baffle plate is b0 = (1-2) t, the thickness of the baffle plate is t0 = (0.5-0.8) t, b0 is the width of the baffle plate, t0 is the thickness of the baffle plate, and t is the thickness of the folded blade. The baffle is arranged at the outlet part of the folded blade, so that fluid can be better guided to flow to the outlet, abrasion and blockage caused by the fact that a medium in a vaneless cavity flows into a blade channel are reduced, flow state disturbance and hydraulic loss of the blade channel are reduced, and the conveying efficiency of the vortex pump is improved.

A mining submersible slurry pump with stirring and crushing functions comprises a pump body and an impeller, a rotating shaft for driving the impeller to rotate is rotatably arranged in the pump body, a filter cylinder is arranged at a water inlet of the pump body through a detachable structure, the rotating shaft extends into the filter cylinder and is provided with a moving cutter through a fixed structure, and the filter cylinder is provided with a static cutter through a sliding structure. According to the mining submersible slurry pump, the stirring function, the crushing function, the shearing function and the automatic tensioning function of the movable cutter and the static cutter are integrated at the bottom of the pump body, the technological process is simplified, and the occupied area of equipment is reduced; the synergistic effect of the stirring assembly, the crushing assembly and the shearing assembly is optimized, the treatment capacity of complex ore pulp containing large-particle ore, coal cinder, silt, ropes, fibers and the like is improved, and the operation and maintenance cost is reduced.

The invention relates to the technical field of centrifugal pumps, and discloses a centrifugal pump bottom valve filtering structure and a centrifugal pump, the filtering structure is characterized by comprising a liquid inlet cylinder, a liquid outlet pipe, a liquid inlet pipe, a liquid outlet pipe, a liquid outlet pipe and a liquid outlet pipe, the liquid inlets are formed in the centrifugal cavity, a plurality of sleeves communicated with the liquid inlets are arranged in the liquid inlet cavity, the sleeves are divided into an upper group and a lower group, one group of sleeves is opened, and the other group of sleeves is closed; and along with the continuous work of the filtering piece, the backflushing component intermittently cleans the filtering piece. When the back flushing component is started, one set of sleeves are closed, the other set of sleeves are opened, liquid is conveyed to the filtering piece from the sleeves in the closed state, reverse flushing is carried out, and impurities on the surface of the filtering piece are effectively stripped. And after the filtering pieces in one group of sleeves are subjected to back-flushing cleaning, the other group of sleeves are switched to be cleaned. And continuous and efficient operation of the filtering system is ensured in an alternate working mode.

A pumping system includes a plurality of interconnected integrated motor / pump modules (IMPs) submerged in a process liquid, such as liquid hydrogen (LH2), within a container, the IMPs being separately controlled by adjustable speed drives (ASDs). The rotation speeds of the IMP impellers are controlled such that the NPSH_A for each IMP remains above a minimum, critical suction head NPSH_c of the IMP, while the outlet pressure and flow of the last IMP is maintained at a specified level unless its NPSH_A falls substantially to its NPSH_c, or until the container is substantially empty. The IMPs can be identical, initially operating at the same speeds, or the first IMP can be an inducer IMP having a reduced NPSH_c. The IMPs can comprise permanent magnets or induction coils attached to their impellers that pass in proximate radial or axial alignment with stator coils. The ASDs can be variable frequency drives (VFDs).

The invention belongs to the technical field of slurry pumps, and particularly relates to a high-efficiency energy-saving slurry pump capable of converting applicable use environments, which comprises a base, a mounting table is mounted on one side of the base, a driving motor is mounted on the mounting table, a driving wheel is mounted at the output end of the driving motor, and the driving wheel is connected with a driven wheel through a belt; the main shaft can be matched with the clutch assembly to drive the impeller assembly to rotate, the electric telescopic rod can drive the moving frame to move, the moving frame can drive the clutch plate to move when moving, the corresponding impeller assembly can be driven to rotate when the clutch plate makes contact with the friction plate, and the impeller assembly can be driven to rotate when the clutch plate is away from the friction plate. When the main shaft rotates, the impeller assemblies are not driven to rotate, the impeller assemblies made of different materials can be driven to rotate according to the use environment, slurry conveying is achieved, the multiple impeller assemblies can be driven to rotate at the same time through cooperation of the main shaft and the clutch assembly, and the slurry extraction efficiency is improved.

A flow generation device (100; 200; 300; 400; 500) for flowing liquid and biomass (101), the flow generation device comprises a first rotor (103; 303; 403; 503) having an axis of rotation (A) and an outer radius (R), a housing (104; 304; 404; 504) encompassing the first rotor and forming a closed liquid volume with an inlet (105) and an outlet (106) for liquid and biomass, the first rotor adapted to provide a circulating motive liquid flow (107; 507) within the housing, a liquid and biomass channel (109; 209; 309; 409; 509) separate from the housing and extending within the housing from the inlet to the outlet, the liquid and biomass channel comprising openings (111; 211; 511) for the circulating motive liquid flow to flow the liquid and biomass inside the liquid and biomass channel from the inlet to the outlet.

The invention discloses an air cooling device for a hot water pump bearing body, and relates to the technical field of hot water pumps. Comprising a rotating shaft, the rotating shaft is fixedly connected with a connecting assembly, the outer side of the rotating shaft is fixedly connected with an impeller, the outer side of the rotating shaft is fixedly connected with a plurality of heat dissipation plates, the heat dissipation plates are evenly distributed with the rotating shaft as the center, and through holes are formed in the outer sides of the heat dissipation plates. According to the hot water pump bearing body air cooling device, the multiple heat dissipation plates are arranged on the outer side of the rotating shaft, the contact area with air is increased through the multiple heat dissipation plates, heat dissipation is accelerated, more space is created for heat exchange, meanwhile, through holes are formed in the heat dissipation plates, air can flow in a penetrating mode between the heat dissipation plates, and the heat dissipation efficiency is improved. The air flow path is optimized, heat transfer is accelerated from the interior of the heat dissipation plate, the vortex and turbulence phenomena of air on the surface of the heat dissipation plate are reduced, the air is made to make direct contact with the vicinity of a heating source, and the heat exchange efficiency is improved.

A grinder pump comprising a volute housing and a cutting assembly including a cutter plate comprised of a mounting flange and a cutting disc. The volute housing has a mounting shoulder that is joined to the mounting flange of the cutter plate. The mounting flange includes a mounting surface joined to the mounting shoulder of the volute housing. The mounting flange is comprised of an outer side wall, an inner region, and an inner side wall. The cutting disc is bounded by an inner surface, an outer surface, and a lateral side wall, and includes an outer region contiguous with the inner region of the mounting flange. The inner surface of the cutting disc and the inner side wall of the mounting flange form a cylindrical recess in the cutter plate.

The utility model discloses a long shaft submerged magnetic drive centrifugal pump which comprises a motor, a rotating shaft, an impeller, a shell and a water outlet pipe, the motor drives the rotating shaft to rotate, the rotating shaft is rotatably connected with the shell, the impeller is installed at the lower end of the rotating shaft, the shell comprises a fixed shell and an impeller shell, a cavity is formed in the fixed shell and the impeller shell, the impeller is located in the cavity, and the fixed shell is provided with a groove. At least part of the impeller is located in the groove, a cavity channel is formed between the impeller and the groove, the impeller shell comprises an outlet, the outlet is connected with a water outlet pipe, the water outlet pipe is provided with a branch pipe, the branch pipe is connected with a plurality of flow dividing pipes, the fixed shell is provided with a plurality of channels, the flow dividing pipes are connected with the channels, and the flow dividing pipes are communicated with the cavity channel. Solid particles between the fixed shell and the impeller are discharged out of the cavity channel through media flowing into the branch pipes, and the solid particles are prevented from being accumulated in the cavity channel to abrade the impeller and the fixed shell.

The invention discloses an energy-saving submersible sewage pump anti-winding cutting device, and relates to the technical field of cutting devices, the energy-saving submersible sewage pump anti-winding cutting device comprises a pipeline main body, a first cutting assembly and a second cutting assembly, and the pipeline main body comprises a first pipe body and a second pipe body. In the second pipe body, the first cutting assembly conducts single-angle straight face cutting in the center of the sewage pump, the second cutting assembly conducts 360-degree circumferential cutting on the rear side, and blind areas and omission are avoided in a matched mode; a first shifting rod of the second cutting assembly rotates to press a slope-shaped block of a guide rod of the first cutting assembly, so that the guide rod drives a connecting column and a first blade to change angles, multi-angle cutting is achieved, the rotating speed of the shifting rod is high, and the multi-angle requirement is met; and one group of driving pieces simultaneously drive the two, so that multi-angle and all-directional cutting of sewage and waste is realized, omission is avoided, and the cutting sufficiency is improved.

A pump for cryogenic fluid and an assembly comprising a tank and such a pump, comprising an intake duct (21), a compressor (31) configured to draw in an incoming flow (E) of cryogenic fluid arriving upstream through the intake duct (21) and to deliver, downstream, a delivery flow having a pressure greater than the pressure of the incoming flow (E), and an insulation cavity (71) completely surrounding at least part of the intake duct (21).

Water jet-assisted sludge extraction and conveying device, characterized in that it comprises: an extrusion pump body (1) for supplying the drive for conveying sludge from the tunnel, wherein the extrusion pump body (1) is provided with a first water inlet pipe (2) for sludge supply and a first water outlet pipe (3) for conveying sludge; a return and processing pipeline for assisting the extrusion pump body (1) in suctioning and conveying the sludge, wherein the return and processing pipeline comprises a filter element, an air bag pressurization element and a water jet flushing element, wherein the filter element is configured to separate sludge water from the sludge coming from the extrusion pump body (1) and convey the sludge water to the air bag pressurization element, the air bag pressurization element is configured to pressurize and dilute the sludge water to obtain high-pressure sludge water, and convey the high-pressure sludge water to the water jet flushing element, the water jet flushing element is configured to return the high-pressure sludge water to the sludge in the tunnel; a suction and conveying element for suctioning sludge and conveying sludge to the first water inlet pipe (2); a sand cleaning element which is connected to the air bag pressurization element and is designed to return the high-pressure sludge water in the air bag pressurization element to the first water inlet pipe (2) and thereby flush the first water inlet pipe (2) and the extrusion pump body (1).

A wear-resistant ceramic composite metal slurry pump for mineral processing. The slurry pump comprises a bracket (1), a bearing assembly (2), a stuffing box (3), a pump casing (4), and wetted parts; the wetted parts include a front liner (5), a rear liner (6), a throat bushing (7), and an impeller (8); the front liner (5), the rear liner (6), the throat bushing (7), and the impeller (8) each adopt a composite structure in which ceramic blocks are bonded to metal, and the ceramic blocks are bonded to a metal framework in wear-prone areas of the wetted parts by means of an adhesive.

An impeller, a drainage pump, and an indoor unit of an air conditioner are provided. The impeller has an impeller shaft and a circular disc. Long blades are fixedly connected to the impeller shaft and extend outward along a radial direction of the impeller shaft. The circular disc has a plate-shaped structure sleeved on an outer circumference of the impeller shaft. The plate-shaped structure is provided with at least one balance through hole communicating front and rear sides of the plate-shaped structure.

A purge apparatus is provided. The purge apparatus is capable of preventing air from being entrained when a submersible pump is moved into a pump column, and capable of warming the submersible pump when the submersible pump is removed from the pump column to thereby prevent component of the air from being liquefied, thus preventing the liquefied gas from being emitted in the atmosphere. The purge apparatus includes a hermetic purge container configured to accommodate the submersible pump therein; a vacuum line coupled to the hermetic purge container and coupled to a vacuum source; a purge-gas supply line coupled to the hermetic purge container and coupled to a purge-gas supply source; and a purge-gas supply valve mounted to the purge-gas supply line.

The present application relates to the technical field of sewage pumps, in particular to a non-clogging sewage pump, which includes: a main body assembly, including a driving motor, a pump body and a chamber; a motion assembly, including an impeller and a transmission shaft; an adjusting component is arranged at the end of the impeller. When the viscosity of the flowing medium inside the chamber is relatively high or the particulate content is relatively large, affecting the rotational speed of the impeller, the adjusting component moves the impeller upward inside the chamber, increasing the medium flow space, reducing the friction and collision between the fluid and the pump body and the impeller, reducing clogging and wear. When the viscosity of the sewage inside the chamber is low and the particulate content is small, the rotational speed of the impeller is relatively fast, and it is located at a lower position inside the chamber, close to the water inlet, which can make the fluid enter the impeller more smoothly. When the impeller rotates, it can drive the fluid more fully, increasing the flow rate of the pump. At the same time, a cutting component is located inside the chamber, and the fixed blades in the fixed ring cooperate with the cutting blades on the movable ring to cut and crush the solid particles entering the chamber, effectively avoiding clogging inside the pump body.

The invention relates to the field of permanent magnet motor pumps, in particular to a combined controllable pressurization permanent magnet motor pump which comprises a permanent magnet motor for driving a whole pump body to perform pollution discharge treatment, and a pump cover is arranged below the permanent magnet motor; the pressure control mechanism is used for pressurizing and discharging sewage, is arranged at the bottom of the permanent magnet motor, and is arranged in the pump cover; the liquid outlet mechanism is used for controlling the pollution discharge rate and carrying out special pressurizing treatment, and the liquid outlet mechanism is arranged on the outer side of the pump cover; according to the combined controllable pressurization permanent magnet motor pump, the inner cavity of the water inlet base is blocked through the multiple tough filter screens and the elastic filter screens, and the water inlet base is in the shape of a cone with the top being a cone, so that the effect of filtering impurities in sewage is achieved, and meanwhile the effect of preventing the impurities (such as fibers and stones) in an impeller or a flow channel from hindering fluid flowing is achieved; and the lift is reduced.

The present invention relates to a method of starting a submersible pump used for transferring liquefied gas. The method includes starting a submersible pump (1A) disposed in a suction container (2A) of a pump apparatus (100A) to deliver liquefied gas to a suction container (2B) of a pump apparatus (100B) through a flow-path switching device (5A) in the suction container (2A), passing the liquefied gas through a flow-path switching device (5B) in the suction container (2B) while the liquefied gas bypasses a submersible pump (1B) disposed in the suction container (2B), and then starting the submersible pump (1B).

The utility model provides a portable large-flow sewage pump which comprises a motor assembly and a pump shell, the pump shell is arranged at the output end of the motor assembly, a cavity is formed in the pump shell, an impeller is arranged on an output shaft of the motor assembly, the impeller extends into the cavity, the pump shell and the motor assembly are detachably connected, a connecting hole is formed in the middle of the impeller, and the connecting hole is communicated with the cavity. The impeller and an output shaft of the motor assembly are fixed through a screw, the cavity comprises a water inlet and a water outlet, the diameter of the water inlet is larger than that of the impeller, a necking ring is further detachably arranged in the water inlet, and the diameter of an inner hole of the necking ring is smaller than that of the impeller. The impeller is fixed to the output shaft of the motor assembly through screws, so that the impeller can detach the water inlet, when the impeller needs to be overhauled or replaced, the pump shell does not need to be detached, a sealing piece between the pump shell and the motor assembly is prevented from being damaged, meanwhile, replacement is more convenient, the diameter of the water inlet is reduced through the necking ring, and therefore the flow and lift are controlled.