135results about "Specific fluid pumps" patented technology

A kind of bridge breaking structure of sludge screw pump, including shell, motor group, main shaft, screw, the shell is provided with feed hopper, it is characterized in that: the main shaft is coaxially provided with sludge breaking piece, rotating door piece between screw, the main shaft is provided with key type protruding portion along radial direction, the rotating door piece includes shaft sleeve part, connecting arm, arc baffle part, expansion piece, the shaft sleeve part is equipped with the inner hole with the outer diameter of main shaft adaptation, the inner hole wall is coaxially provided with the annular groove with the diameter of key type protruding portion adaptation, axial width adaptation, the annular groove is provided with several expansion holes around the center of circle equal division, the expansion piece is arranged in expansion hole and does sliding fit, the expansion piece rotates with rotating door piece angle, by gravity, exceeds expansion hole and key type protruding portion and forms synchronous rotation by abutting, or retract in expansion hole and let key type protruding portion pass through;The arc baffle part gradually rotates with the main shaft, intermittently closes, opens feed inlet.

To provide a flow path switching device that can reliably perform flow path switching operations when the pump stops operating. [Solution] The flow path switching device 5 is equipped with a valve body 42 that selectively connects the outlet flow path 35 to either the first inlet flow path 31 or the second inlet flow path 32. The first inlet flow path 31, the second inlet flow path 32, the outlet flow path 35, and the pressurizing chamber 38 are all connected to the valve chamber 37. When the valve body 42 is in the open position, the pressurizing chamber 38 is connected to the second inlet flow path 32. The pressurizing chamber 38, the valve chamber 37, and the first inlet flow path 31 are aligned along the direction of movement of the valve body 42. When the valve body 42 is in the open position, it is located between the pressurizing chamber 38 and the first inlet flow path 31.

The application discloses a high-concentration sludge pumping device and belongs to the technical field of sludge pumping equipment. The device comprises a placing plate, and a suction sludge pump is fixedly installed at the central position of the upper surface of the placing plate. The connecting block is extruded against the adjusting block by pressing the filter cover, so that the adjusting block is forced to compress the return spring and move in the direction of the return spring. At this time, the inlet of the connecting groove is opened. The filter cover is rotated to make the connecting block slide along the connecting groove and be inserted. After the connecting block completely enters the inside of the connecting groove, the return spring releases the elastic force to push the adjusting block to reset, automatically closes the opening of the connecting groove, and completes mechanical locking. The quick installation of the filter cover is completed, so that the filter cover is fixedly installed outside the suction end of the suction sludge pump. The filter cover can filter and treat large-particle sundries, so that the sundries cannot be sucked into the inside of the suction sludge pump. The stirring unit can pretreat sludge through shearing force, reduce the concentration of solid sundries, and cooperatively reduce the risk of pump body blockage.

The utility model discloses a high temperature acid -proof submerged oil centrifugal pump, including the pump body, the outer surface of pump body is equipped with the suction module, the inside of pump body is equipped with the pump shaft, the outer surface of pump shaft is equipped with the impeller module, the inside of pump body is equipped with the sealing module, the outer surface of pump body is equipped with motor connection subassembly. The device adopts the dynamic ring and static ring combination seal of silicon carbide material, cooperates the hastelloy alloy compensation spring, forms the dynamic compensation sealing surface, utilizes the acid corrosion resistance and high temperature stability of silicon carbide, cooperates the compensation spring and continuously exerts the axial pressure, and the automatic compensation sealing surface wear and tear, prolongs the life of sealing, can effectively solve the problem that the traditional alloy seal is easy to acid -etching, heat deformation leads to the leakage, and simultaneously the pump body of the equipment adopts duplex stainless steel material, cooperates the tungsten carbide wear -resisting ring of impeller module and is equipped with, through duplex stainless steel and austenite and ferrite structure, can resist chloride ion corrosion, is applicable to high salt content oil well environment.

This utility model provides a front cover assembly and a pump. The front cover assembly includes a front cover, an annular connector, and a flange. The front cover has a fluid passage and at least one external liquid inlet. The at least one external liquid inlet communicates with the fluid passage. The at least one external liquid inlet of the front cover has an inner wall surface, an outer wall surface, an abutment end face, and a receiving groove. The inner wall surface surrounds the at least one external liquid inlet. The outer wall surface faces away from the inner wall surface. The abutment end face is connected to both the inner and outer wall surfaces. The abutment end face is flush with the at least one external liquid inlet. The receiving groove is separate from the at least one abutment end face. The annular connector is installed in the receiving groove. The flange is movably fitted onto the annular connector relative to the front cover.

A slurry pump for mineral processing and a pump housing for a slurry pump. The pump housing includes a front part, a peripheral part, and a back part. The peripheral part includes one or more first protrusions and / or indentations configured to create a turbulent flow.

The utility model discloses a front guard plate of slurry pump relates to slurry pump technical field, including front guard plate body and driving gear, the outer surface of front guard plate body is provided with high chromium cast iron layer, and the outer surface of high chromium cast iron layer is provided with ceramic patch layer, is equipped with mounting hole on the front guard plate body, and the surface of front guard plate body is provided with the fixed frame in the upper middle part, is installed with servo motor on the fixed frame. The front guard plate of slurry pump, high chromium cast iron layer is integrated with front guard plate body by casting process, ceramic patch layer adopts high -strength ceramic material, and the even pasting of special adhesive of high temperature resistance, high strength is stuck on high chromium cast iron layer surface, when the slurry impact front guard plate body, through ceramic patch layer bears the scour of solid particle, and its high hardness characteristic can effectively resist the wear and tear, and through high chromium cast iron layer provides toughness support, prevents ceramic patch layer and cracks because of impact, thereby effectively protects front guard plate body, prolongs its life.

A cryopump assembly, including a centrifugal pump and an induction motor, specially configured for delivery of liquid hydrogen (LH2) from a cryogenic LH2 tank to various application scenarios, has a horizontal configuration and includes an offset discharge port to prevent the occurrence of gas blockage phenomena. A one-piece vacuum jacket housing may be employed to enclose various portions of the centrifugal pump and the induction motor to prevent heat loss, while another embodiment is to lubricate the bearings and cool the induction motor with LH2 flow through the induction motor. The centrifugal pump can be of a single-stage type or a multi-stage type, and each stage unit comprises an impeller and a guide vane connected with a guide vane shell. The pump shares one motor / pump shaft with the motor. Another embodiment is that the cryopump assembly is vertically submerged in a cryogenic LH2 tank, or vertically submerged in a sump vessel secured to the exterior or interior of the cryogenic LH2 tank.

The invention relates to a pump impeller (1) with an impeller surface (11) on which blades (2, 3) are arranged, wherein at least one of the blades (2, 3) is a blade of the first type (2) having a blade edge (22) inclined forward in the direction of rotation (DR). Furthermore, according to the invention, a pump impeller with blades (2, 3) has blades (2, 3) of a first type (2) and a second type (3) whose blade geometries differ.Alternatively or additionally, a housing element (100) for a pump (200) is specified, comprising an inner housing wall (103) that defines a flow channel (105) extending along a central axis (M) for a fluid medium, wherein the cross-section of the flow channel (105) increases in a main flow direction (H), and wherein the inner housing wall (103) has a surface structure (101) designed to counteract backflow of the fluid medium along the inner housing wall (103) against the main flow direction (H). Furthermore, the invention relates to a pump (200) comprising at least one pump impeller (1) and the housing element (100).

This invention discloses a corrosion-resistant circulating pump with a quick-change seal structure, comprising a base, a pump housing, a motor, and an integrated sealing assembly connecting the pump housing and the motor. An impeller shaft is supported within the pump housing by a ceramic bearing. One end of the impeller shaft is fixed to the impeller, and the other end has a first connecting portion. The integrated sealing assembly includes a sealing housing, an intermediate drive shaft passing through the sealing housing, and a mechanical seal installed between the two. One end of the intermediate drive shaft has a second connecting portion that inserts into the first connecting portion, and the other end is connected to the motor via a coupling. When the mechanical seal needs to be replaced, the integrated sealing assembly along with the intermediate drive shaft can be pulled out as a whole, separating the second connecting portion from the first connecting portion. This invention achieves rapid replacement of the entire sealing assembly. During the replacement process, the impeller shaft and impeller remain stationary, eliminating the need for realignment, significantly shortening maintenance time and improving repair efficiency.

This invention discloses an ultra-low temperature vertical cylindrical bag pump and its conveying method, relating to the field of cryogenic medium conveying pump technology. It includes a pump body, a pump shaft, a mechanical seal, and a temperature management and media isolation system integrated into the upper part of the pump body. This system passively blocks the upward intrusion of cold air through a cold insulation chamber (which can be filled with insulation material) surrounding the pump shaft, and actively maintains the temperature of the sealing area by introducing heating gas into a heating chamber. Its innovation lies in using the exhaust gas discharged from the heating chamber as the gas source for the mechanical seal PLAN 62, achieving energy reuse, and designing a collection chamber with a balancing pipeline and an external collection tank to safely handle seal leaks. This invention constructs a layered thermal barrier, realizing cascaded utilization of the gas source and safe control of leaks, significantly improving sealing reliability, system energy efficiency, and operational safety.

A self-priming pump anti-clogging mechanism includes an anti-clogging mechanism connected to the pump body's inlet end. The anti-clogging mechanism consists of a housing, a filter screen, and a crushing assembly. The lower part of the housing, facing the pump body, has an outlet connected to the pump body's inlet end, while the upper part of the housing, away from the pump body, has an inlet connected to the housing itself. The filter screen is located in the middle of the housing, between the outlet and the inlet. The crushing assembly consists of a motor, a rotating shaft, and a crushing blade assembly. The rotating shaft is rotatably mounted inside the housing and coaxial with the housing's inlet. The motor is mounted on the outside of the housing and connected to the rotating shaft. The crushing blade assembly is installed at the end of the rotating shaft near the inlet. The filter screen is inverted V-shaped. A transparent observation cover is bolted to one side of the housing. This invention offers advantages such as easy anti-clogging and cleaning.

The invention relates to a submersible semi-axial centrifugal pump (1) for installation in a column (2), and comprises an outer pump housing (7) and an inner pump core arrangement (14). The pump core arrangement comprises a drive unit (16), a semi-axial open centrifugal impeller (20) and a plurality of guide vanes (15) extending between and connecting the pump housing (7) and the drive unit (16), wherein the impeller (20) comprises a hub (28) and at least two spirally swept blades (29), wherein the hub (28) is essentially cone-shaped tapering towards the inlet (12) of the pump housing (7). Each blade (29) comprises a leading edge (31), a trailing edge (32) and a lower edge (33). The leading edge (31) of each blade (29) is swept backwards from an inner end (36) located at the hub (28) towards an outer end (37) located at the inner surface (11) of the pump housing (7), wherein a centre axis (A) of the impeller (20) is located at a relative radius R* equal to 0 and the outer end (37) of the leading edge (31) of each blade (29) of the impeller (20) is located at a relative radius R* equal to 1, and wherein a sweep angle (α) of the leading edge (31) is in the range 32 - 45 degrees at a first relative radius R*1 equal to 0,5, and in the range 47 - 60 degrees at a second relative radius R*2 equal to 0,95, and is continuously increasing from the first relative radius R*1 to the second relative radius R*2.

The embodiment of the present application provides a centrifugal pump, which comprises a pump shell, a first driving mechanism, a second driving mechanism, a pump shaft and an impeller arranged in the pump shell; the pump shell comprises a first chamber and a second chamber which are communicated with each other, the shaft center of the pump shaft coincides with the shaft center of the first chamber and the second chamber, the inner diameter of the second chamber is larger than that of the first chamber, the impeller is connected to the end of the pump shaft, the first driving mechanism and the second driving mechanism are connected with the pump shaft and are located on the side of the pump shaft which is away from the impeller, the first driving mechanism is used to drive the pump shaft to rotate, the second driving mechanism is used to drive the pump shaft to move along the shaft center, and the impeller is used to rotate in the first chamber or the second chamber under the driving of the pump shaft. The embodiment of the present application provides a centrifugal pump which can meet the requirements of high lift and high reliability of the pump.

The utility model discloses a kind of slurry pump mounting base, it is related to slurry pump technical field, comprising: assembly base, the upper surface of assembly base is integrally provided with assembly frame, the front end of assembly frame is equipped with pump shell, the lower of assembly base is equipped with lifting seat, the lifting seat includes the top frame of assembly combination with assembly base, the lifting seat further includes the bottom frame fixed on ground, two groups X type frame are installed between the top frame and bottom frame, hydraulic cylinder is installed between two groups X type frame, one end of X type frame is connected with top frame, bottom frame respectively by pivot, driven wheel is installed to the other end of X type frame, support is installed between two X type frames, hydraulic cylinder is installed on support, the telescopic end of hydraulic cylinder is connected with connecting frame by pivot, connecting frame is connected by pivot with the intersection of X type frame. Solve the existing slurry pump easily limited to the problem of height difference in environment and poor supportability at shaft rod.

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 relates to bearing seal technical field, and disclose a kind of silt pump bearing chamber anti-leakage structure, including bearing chamber ontology and main shaft, the sealing section of bearing chamber ontology is sequentially arranged from outside to inside by external labyrinth seal assembly, intermediate pressure balance cavity, double mechanical seal group and pressure relief component, the labyrinth seal assembly includes detachable copper labyrinth ring and polyurethane sand scraping ring.The silt pump bearing chamber anti-leakage structure, by the cooperation setting of bearing chamber ontology, main shaft, external labyrinth seal assembly, detachable copper labyrinth ring, polyurethane sand scraping ring, double mechanical seal group, tungsten carbide moving ring and siliconized graphite static ring, has carried out multistage sealing anti-leakage treatment for the silt pump bearing chamber anti-leakage structure, enhanced its anti-leakage effect, by the cooperation setting of intermediate pressure balance cavity, pressure relief hole, pressure relief groove and pressure relief valve stem, has carried out pressure relief while sealing anti-leakage for silt pump bearing chamber.

This invention relates to the field of magnetic pump technology, and discloses a high-flow-rate self-priming fluoropolymer-lined magnetic pump, including a base, a servo motor and a volute housing on the base, and a shearing disc inside the volute housing. The bottom of the volute housing is recessed downwards between the inlet and outlet pipes to form an expansion cavity. Multiple pressure regulating plates are arranged obliquely along the direction from the inlet to the outlet pipe inside the expansion cavity, so that the material is pressurized in multiple stages before flowing to the outlet pipe. An inwardly recessed inner flare is located at the outlet pipe, and an adaptive adjustment structure is provided at the inner flare. A shearing disc is located on the front side of the impeller. Through the synergistic action of the internally and externally staggered arc-shaped shearing plates, the central conical protrusion, and the arc-shaped shearing cavity, solid particles, fibers, and flocculent materials in the medium are subjected to high-speed impact, shearing, tearing, and fine crushing, solving the problem of foreign matter entanglement on the impeller wall and blockage of the flow channel, ensuring continuous and stable operation of the pump body in the transportation of high-flow-rate media containing impurities.

Providing a blood pump assembly, and a method for manufacturing and operating a blood pump assembly. [Solution] The blood pump assembly comprises a pump and an impeller blade rotatably coupled to the pump. The blood pump assembly also comprises a pump housing component, which is sized to pass through a body cavity and coupled to the pump. The pump housing component includes a circumferential wall extending around the axis of rotation of the impeller blade. The circumferential wall includes an inner circumferential wall surface and an outer circumferential wall surface. The circumferential wall also includes one or more blood drainage apertures. Each of the one or more blood drainage apertures is defined by an inner aperture portion and an outer aperture portion. Each inner aperture portion is chamfered between the inner circumferential wall surface and the outer circumferential wall surface.

A wave soldering station of a wave soldering machine includes a flow duct positioned in a reservoir of a solder pot, and a core frame supported by the flow duct. The wave soldering station further includes a first pump to deliver solder material to a first chamber, a second pump to deliver solder material to a second chamber, and a wave soldering nozzle assembly supported by the core frame. The wave soldering nozzle assembly includes a solder distribution baffle to create a solder wave, and an exit wing coupled to the core frame and configured to move from a lowered position to enable increased solder flow and a raised position to decrease flow of solder material. The first pump, the second pump and the exit wing are configured to control the flow of solder through the solder distribution baffle to vary a contact length of the solder wave.

The utility model discloses a kind of downhole oil pumping unit for thick petroleum, stirring motor hollow shaft is located in the inside of motor shell, stator coil is arranged on the inner wall of motor shell, rotor coil is arranged on the outer wall of stirring motor hollow shaft, the position of stator coil and rotor coil corresponds;Spiral agitator is located in the inside of agitator fixed base, the upper end of agitator fixed base is fixedly connected with the lower end of stirring motor hollow shaft;Heating rod is fixed in the lower end of motor shell, and extends to the inside of agitator fixed base;The lower end of oil pumping unit is connected with the upper end of motor shell;Agitator fixed base, stirring motor hollow shaft and oil pumping unit are interconnected between each other.The utility model can improve the efficiency of thick petroleum extraction of oil pumping device and reduce equipment loss.

The invention relates to a sealed motor pump comprising: - a bowl (3) having a fluid inlet (5) and a fluid outlet (7); - a pump wheel (9) arranged inside the bowl (3); - a motor housing (11) rigidly attached to the bowl (3) and internally defining a chamber (13) in fluid communication with the bowl (3); - a motor (15) comprising a rotor (17) and a stator (19), the motor being arranged inside the chamber (13); - a shaft (21) to which the pump wheel (9) is attached, the shaft (21) being driven in rotation around an axis of rotation by the rotor (17); - a heat exchanger (41) arranged inside the chamber (13), the heat exchanger having a first side (43) through which a fluid flows and a second side (45) through which a heat transfer fluid flows; - a circuit (47) for cooling the motor by means of a fluid, wherein a cooling channel (49) through which the fluid flows is in thermal contact with the motor (15), and wherein the first side (43) of the heat exchanger (41) forms part of the cooling circuit (47) and is arranged downstream of the cooling channel (49).

Apparatus and methods are described including a blood pump (20) configured to be placed inside a body of subject, the blood pump including an impeller (50) that includes proximal and distal bushings (64, 58), and a frame (34) disposed around the impeller, the frame including proximal and distal bearings (116, 118). An axial shaft (92) passes through the proximal and distal bearings (116, 118) of the frame and the proximal and distal bushings (64, 58) of the impeller (50). The impeller (50) defines a radially-constrained configuration in which the impeller (50) is introduced into the subject's body and a non-radially-constrained configuration in which the impeller (50) is configured to pump blood within the subject's body. The impeller (50) changes from its radially-constrained configuration to its non-radially constrained configuration by the distal bushing (58) sliding over the axial shaft (92). Other applications are also described.

The application relates to the technical field of centrifugal pumps, in particular to an energy-saving high-temperature-resistant centrifugal pump capable of conveying crystallized materials, which comprises a motor, a support and a pump body, and further comprises an inner rotor assembly, an outer rotor assembly, a jacket assembly and a flow guiding part; the inner rotor assembly is connected with the pump body and is used for driving the pump body to convey liquid; the outer rotor assembly is connected with the motor and transmits mechanical energy of the motor to the inner rotor assembly through magnetic coupling. The flow guiding part driven by medium pressure is arranged, automatic switching of two working conditions is cleverly realized. When medium flows in the pump, the static pressure of the medium makes the flow resistance assembly open, the medium itself is allowed to flow through the bearing cavity for flushing and lubrication, meanwhile, the flushing liquid passage of the jacket assembly is closed, so that pollution of external flushing liquid to the conveying medium is avoided. When there is no medium in the pump, the medium channel is automatically closed and the flushing liquid passage of the jacket assembly is opened, external flushing liquid is used for flushing, cooling and anti-crystallization protection of the bearing.

The inducer 128 is a hub 136 having an outer side surface 144 extending from a front end 146 to a rear end 148, wherein the outer side surface 144 may include a hub 136 having a first cylindrical front portion 150, a frustoconical intermediate portion 154, and a second cylindrical rear portion 152. The inducer 128 is a main blade 140 extending circumferentially along a first helical path across the front portion 150, the intermediate portion 154, and the rear portion 152, wherein the first helical path may include a main blade 140 having an increasing helical angle. The inducer 128 is a splitter blade 142, each of which may further include a splitter blade 142 circumferentially positioned between two of the main blades 140.

To provide a power cable that can facilitate handling of a power cable connected to a submersible pump and achieves securing of safety for operators and reduction of loads on operators.SOLUTION: A power cable 36 for supplying power to a submersible pump 2 disposed in a pump column 3 to transport a liquefied gas includes: a plurality of divided power cables 36A; and a plurality of cable connectors 36B to which the plurality of divided power cables 36A are electrically connected.SELECTED DRAWING: Figure 1

The application relates to a dredging connecting reamer frame of a slurry pump and relates to the technical field of the slurry pump, which comprises a first frame, a slurry pump body and a second frame, the second frame is fixedly connected to one end of the first frame, two positioning frames are fixedly connected to the inside of the first frame, two positioning plates are fixedly connected to the outside of the slurry pump body, screw holes are formed in the inside of the positioning frames and the inside of the positioning plates and are threadedly connected with bolts, and a side plate is fixedly connected to the inside of the first frame. The application solves the problem that when the displacement of the slurry pump is small, foreign matters such as stones and branches mixed in the slurry easily enter the pump cavity, causing the impeller to be stuck and the pipeline to be blocked, high-density particles such as sand and stone easily settle due to gravity during the conveying process, causing the pipeline to be blocked and the inner wall to be worn, and the slurry pump needs to be stopped and cleaned after working for a period of time, which not only seriously affects the continuity of operation but also increases the equipment failure rate.