2413results 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.

A blood flow assist system can include an impeller assembly including an impeller shaft and an impeller on the impeller shaft, a primary flow pathway disposed along an exterior surface of the impeller. The system can include a rotor assembly at a proximal portion of the impeller shaft. A secondary flow pathway can be disposed along a lumen of the impeller shaft. During operation of the blood flow assist system, blood can be pumped proximally along the primary flow pathway and the secondary flow pathway. The system can include a sleeve bearing distal the impeller. The system can include a drive unit having a distal end disposed distal a proximal end of the second impeller. The drive unit comprising a drive magnet and a drive bearing between the drive magnet and the impeller assembly.

Blood pump assemblies and methods of manufacturing and operating blood pump assemblies are provided. The blood pump assembly includes a pump and an impeller blade rotatably coupled to the pump. The blood pump assembly also includes a pump housing component sized for passage through a body lumen and coupled to the pump. The pump housing component includes a peripheral wall extending about a rotation axis of the impeller blade. The peripheral wall includes an inner peripheral wall surface and an outer peripheral wall surface. The peripheral wall also includes one or more blood exhaust apertures. Each blood exhaust aperture in the one or more blood exhaust apertures is defined by an inner aperture edge and an outer aperture edge. Each inner aperture edge is chamfered between the inner peripheral wall surface and the outer peripheral wall surface.

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.

A centrifugal blood pump without a mechanical bearing comprises a pump casing (1), an impeller (9) arranged in the pump casing rotatably about the central axis and freely movable axially and radially within a limited clearance. The impeller has per-manent magnets or permanently magnetized magnetic regions (N / S) which cooperate with an electromagnetic drive to set the impeller rotating. A circular wall (12) or circularly arranged wall sections are provided within the pump casing, their inner surfaces defining a radial clearance together with the outer circumference of the impeller to form a hydrodynamic radial bearing for the impeller.

Apparatus and methods are described including a ventricular assist device that includes a tube configured to traverse a subject's aortic valve. The tube defines a generally-cylindrical central portion, and a proximal conical portion that narrows from a proximal end of the central portion to a proximal end of the tube. The tube defines one or more blood inlet openings in a vicinity of a distal end of the tube, and one or more blood outlet openings that extend axially from the central portion of the tube at least partially into the proximal conical portion of the tube. A blood pump pumps blood into the tube from the subject's left ventricle through the one or more blood inlet openings, and from the tube into the aorta through the one or more blood outlet openings. Other applications are also described.

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 exemplary pump (10) is operative to reduce the size of solids suspended in liquid that enters the interior area of the pump. The pump includes a motor (28) that is operative to drive an impeller (56) that is located in a pump chamber (42). The motor is also operative to drive a slicer (80) that includes at least one slicer blade edge (96). The slicer blade edges move in immediately adjacent outwardly overlying relation of a slicer plate (66) which includes a plurality of slicer plate fluid openings (78). Solids suspended in liquid that extend in the slicer plate fluid openings are sliced between the slicer blade edges and the facing peripheral shearing edges of the slicer plate fluid openings so that the solids are reduced to a size that can pass through the pump.

Aspect of the disclosure provides a method of pumping a liquid material. The method may include pumping the liquid material by rotating an impeller attached to a shaft assembly. The pump includes the impeller, the shaft assembly, and a pump chamber. The method includes controlling the minimum pressure of the liquid material in the pump chamber to be above a threshold pressure by controlling a pressure of a gas that is supplied to the pump chamber. The shaft assembly includes a first shaft and a second shaft that are separated by a gap and are physically coupled by a coupling component.

The invention provides a shield pump. The shield pump comprises a pump head; the shielding sleeve is matched with the pump head, and a main cavity is defined by the shielding sleeve and the pump head; the stator structure comprises a stator body and an injection molding layer, the injection molding layer wraps at least part of the stator body, and a rotor mounting hole penetrating through the stator structure in the preset direction is formed in the stator structure; the rotor structure is mounted in the rotor mounting hole, and the stator structure and the rotor structure are isolated by the shielding sleeve; the impeller is arranged in the main cavity, and the impeller is connected with the rotor structure; the control box is fixedly connected with the stator structure in the preset direction, and an electrical element in the control box is electrically connected with the stator body through a connecting terminal; and the first sealing element is arranged between the stator structure and the control box, and the first sealing element is used for sealing and isolating the connecting terminal. According to the embodiment of the shield pump, the technical problem that the fault rate of a shield pump in the related technology is high is solved.

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 relates to the technical field of water pumps, and provides an internal anti-deposition centrifugal water pump which comprises a supporting seat, a bearing seat, a front pump shell and a rear pump shell are arranged on the supporting seat, the front pump shell and the rear pump shell are fixedly connected together, a front protection plate is arranged on the inner wall of the front pump shell, a rear protection plate is arranged on the inner wall of the rear pump shell, and an impeller is rotationally connected to the rear protection plate; the pump further comprises a protection water injection assembly and a liquid inlet pipeline, the protection water injection assembly is arranged between the front protection plate and the rear protection plate, the liquid inlet pipeline is communicated between the front pump shell and the front protection plate, the liquid inlet pipeline is communicated with the impeller, and a bendable conveying pipeline is communicated with the liquid inlet pipeline. By means of the technical scheme, the problem that in the using process of a centrifugal water pump in the prior art, due to the fact that solid-liquid proportions in solid-liquid mixed liquid conveyed in the previous procedure are different, residues are prone to being deposited in the centrifugal water pump is solved.

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 present invention relates to the technical field of urea pumps, specifically, a centrifugal urea pump. An impeller is rotatably connected inside the pump housing, and the outer periphery of the impeller is recessed to form a plurality of liquid storage tanks. A hydraulic pipe is connected to the axis of the impeller, and a connecting channel is provided between the hydraulic pipe and the liquid storage tank. The outer end of the connecting channel is slidably connected to a first electromagnet, and an adjusting plate is rotatably connected to the side of the liquid storage tank away from the axis of the impeller. When the first electromagnet is energized, the adjusting plate is magnetically attracted to make the liquid storage tank in an open state, and a limit assembly is provided on the inner wall of the liquid storage tank opposite to the movable end of the adjusting plate, and the limit assembly is used to prevent the adjusting plate from falling out of the liquid storage tank. During the operation of the impeller, the liquid storage tank is closed by the adjusting plate, so that the inside of the liquid storage tank is in a negative pressure state. When the liquid storage tank is connected to the liquid inlet cavity, urea can be quickly pushed into the liquid storage cavity, so as to achieve efficient flow and precise control of urea.

The invention discloses a sewage pump with a self-cleaning function and a self-cleaning method. The sewage pump with the self-cleaning function comprises a volute; an output shaft of the driving motor A can rotatably extend into the volute; the impeller comprises a wheel disc and a plurality of blades annularly arranged on the wheel disc in an involute shape, and guide rails parallel to the blades are arranged on the two sides of each blade respectively; and the scraping mechanism is arranged on the guide rail in a sliding manner and scrapes along the surfaces of the blades when the impeller rotates reversely so as to scrape dirt on the surfaces of the blades. Meanwhile, the scheme further discloses a self-cleaning method matched with the sewage pump in the scheme, self-cleaning of the sewage pump can be achieved through the equipment and the method, the cleaning work of the impeller of the sewage pump is greatly simplified, the process that the sewage pump needs to be disassembled and assembled in the original cleaning process is omitted, and the cleaning efficiency is improved. And the service life of the seal in the sewage pump is prolonged.

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 present invention provides a dry sewage pump, which belongs to the technical field of sewage pumps, and comprises a motor assembly, an upper bearing assembly, a fan, an upper cover, a lower bearing assembly, an impeller, fixing bolts, a volute, a water outlet flange, and a water inlet base. The motor assembly comprises a rotating shaft, a rotor, a motor housing, and a stator. The fan, the upper bearing assembly, the rotor, the lower bearing assembly, and a mechanical seal are respectively sleeved on the upper end of the rotating shaft from top to bottom and can rotate with the rotating shaft. An impeller cone sleeve and a sealing gasket are arranged between the impeller and the rotating shaft. The cone sleeve is designed so that the impeller can move up and down in the axial direction according to actual working conditions to pass larger particles of matter, thereby achieving strong sewage discharge capacity and reducing the probability of the pump being blocked. The impeller has strong practicality and broad application prospects.

The invention belongs to the technical field of heavy slurry pumps, and particularly relates to a heavy slurry pump shell adopting a replaceable structure, the heavy slurry pump shell comprises a base and a rotating mechanism, the rotating mechanism is arranged above the base and comprises a connector, a rotating bearing, a rotating ring and a pump shaft, and the output end of the pump shaft is provided with a pressure reducing sleeve and an impeller; the pump further comprises a pump shell assembly and a protection assembly, the pump shell assembly comprises a pump body and a pump cover which are detachably connected through a locking mechanism, and the protection assembly comprises a rear protection plate and a front protection plate which are detachably connected through a fastener. The pressure reduction sleeve is connected with the pump body and the rear protection plate in a clamped mode, the protection assembly and the pump shell assembly are fixed through the locking mechanism and the fastener, the internal structure can be rapidly disassembled and assembled, the internal structure can be conveniently and independently replaced, the maintenance cost can be effectively reduced, and the working efficiency can be effectively improved. And meanwhile, by replacing the internal structure, the aging of the equipment can be effectively delayed.

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.

The invention relates to the technical field of urea pumps, in particular to a centrifugal urea pump. An impeller is rotationally connected into the pump shell, the periphery of the impeller is sunken to form a plurality of liquid storage grooves, the axis of the impeller is connected with a hydraulic pipe, a connecting channel is formed between the hydraulic pipe and the liquid storage grooves, the outer end of the connecting channel is slidably connected with a first electromagnet, and the side, away from the axis of the impeller, of each liquid storage groove is rotationally connected with an adjusting plate. The adjusting plate is magnetically attracted, the liquid storage tank is in an open state, and a limiting assembly is arranged on the inner wall, opposite to the movable end of the adjusting plate, of the liquid storage tank and used for preventing the adjusting plate from disengaging from the interior of the liquid storage tank. In the operation process of the impeller, the liquid storage tank is closed through the adjusting plate, the interior of the liquid storage tank is in a negative pressure state, when the liquid storage tank communicates with the liquid inlet cavity, urea can be rapidly pushed into the liquid storage cavity, and efficient flowing and accurate control of the urea are achieved.

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.

Please substitute the new Abstract submitted herewith for the original Abstract: A centrifugal pump includes a shaft arrangement and a cooling insert. The shaft sealing arrangement includes a rotating element and a stationary element, which form a sealing gap associated with a lubricating film in a chamber. The cooling insert has a first region and a second region. The first region at least partially surrounds the rotating element. The second region at least partially delimits the chamber.

The invention belongs to the field of slurry pumps, and particularly relates to a high-efficiency and high-output slurry pump which comprises an impeller arranged in a pump body, a rotating shaft connected with a hub of the impeller and used for driving the impeller to rotate, and a filler box arranged on the rotating shaft and used for preventing leakage of the pump body. The impeller is provided with a feeding end face and a feeding port located in the front side of the feeding end face, the feeding end face is provided with a flow dividing sleeve coaxial with the feeding port and a flow guiding cone located in the flow dividing sleeve, and the flow guiding cone protrudes towards the feeding port. The fixed end of the flow dividing sleeve is fixedly connected with the feeding end face, the overhanging length of the overhanging end is larger than the protruding length of the drainage cone, first spiral channels are formed in the inner side wall and the outer side wall of the flow dividing sleeve, and a set of flow dividing channels communicated with the first spiral channels are formed in the fixed end of the flow dividing sleeve. The slurry pump can effectively reduce the impact wear of the slurry to the impeller and improve the output performance of the slurry pump.

The invention discloses a guiding type self-cleaning water pump and relates to the technical field of water pumps, the guiding type self-cleaning water pump comprises a water pump shell, an impeller cleaning assembly and a pipeline cleaning assembly.The water flow speed is changed through the gradually-decreased hole diameter of a conical speed change hole, a rapid water flow impact column is formed, and strong impact force is generated; impurities and sediments on the surfaces of the impeller blades and the impeller rear cover disc are impacted and cleaned, so that the impurities cannot stay and be attached to the impeller blades and the impeller rear cover disc, and water scale difficult to remove is prevented from being formed, a water source dispersedly flows into the water pump shell in a flow channel formed by every two adjacent impeller blades, and at the moment, water flow is guided through the flow guide blocks; water flow deflects to the surfaces of the impeller blades, so that impact force is increased, the side faces of the impeller blades are subjected to impact cleaning, the cleaning state of the surfaces of the impeller blades is kept through continuous water flow impact, the automatic cleaning function can reduce regular manual cleaning requirements, tedious manual operation is omitted, and the maintenance cost and labor input are reduced.

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.