28 results about "Axial-flow pump" patented technology

The present invention relates to a rotary tilting plate axial piston pump (1) for pumping liquids, comprising: a head (25); a plurality of cylinders (30) formed in the head (25) in a number greater than two, the plurality of cylinders (30) having axes (C) parallel to each other and arranged radially about a common axis (A) parallel to the axes of the cylinders; a plurality of pistons (75) each piston slidably inserted into a corresponding cylinder (30) of the plurality of cylinders (30) for pumping liquids; and a plurality of delivery pipes (145) formed in the head (25), each of the plurality of delivery pipes (145) extending directly from the corresponding cylinder (30) to a corresponding delivery valve (120) and arranged transversely to the axis (C) of the corresponding cylinder. The head (25) has a first side (61) and a second side (62), the second side (62) being opposite to the first side (61) with respect to an imaginary orthographic plane (S), the imaginary orthographic plane (S) including the common axis (A) and parallel to the axis (C) of the cylinder (30), wherein the plurality of cylinders (30) includes a first arranged cylinder and a second arranged cylinder, the axis (C) of the first arranged cylinder being between the first side (61) and the imaginary orthographic plane (S), and the axis (C) of the second arranged cylinder being between the second side (62) and the imaginary orthographic plane (S). A delivery conduit (145) extending from a cylinder (30) in the first arranged cylinder extends from the respective cylinder (30) toward the first side (61), and a delivery conduit extending from a cylinder in the second arranged cylinder extends from the respective cylinder (30) toward the second side (62).

1. Name of the product in this design: Axial Flow Pump (120 cubic meters). 2. Purpose of this design: This design is used for conveying liquids. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

This invention relates to an intelligent anti-rotation system and control method for magnetorheological fluid in the impeller of an axial flow pump. The system includes: an impeller cavity with helical grooves and filled with magnetorheological fluid; an electromagnetic coil coaxially mounted on the outside of the impeller; sensors for monitoring pump shaft speed and motor current; and a controller for receiving signals from the speed sensor and controlling the energization of the electromagnetic coil. The impeller cavity is machined along the impeller axial direction, and the electromagnetic coil is tightly mounted on the outside of the impeller with its axis coinciding with the impeller axis to ensure uniform magnetic field action on the magnetorheological fluid inside the impeller. The speed sensor is installed at the end of the pump shaft or on the shaft body, and the current sensor is installed in the motor power supply circuit. The signal output terminals of the speed sensor and the current sensor are respectively connected to the input terminal of the controller, and the control input terminal of the electromagnetic coil is connected to the output terminal of the controller. This invention has a simplified structure, reduced cost, high reliability, extremely fast response speed, and excellent control performance.

This invention belongs to the field of axial flow pump control technology, specifically relating to an intelligent optimization control method and system for axial flow pump operation. The method includes: constructing and fusing a Gaussian process regression surrogate model corresponding to the physical mechanism and operating data; the model synchronously outputting performance prediction values ​​and prediction uncertainties; calculating the state entropy corresponding to the current operating condition based on the surrogate model; performing heuristic pruning by using the surrogate model to estimate the change in state entropy; the system selecting a subset of candidate rules and calling the surrogate model to infer and calculate the comprehensive gain value; the inference depth decreasing as the prediction uncertainty increases; establishing a penalty mechanism that applies penalties to the gain value based on historical failure probabilities and the current state entropy value; and the system determining the optimal control rule and issuing commands based on the adjusted gain value. This invention can reduce the underlying computing power consumption, prevent long-term error accumulation, prevent repeated equipment oscillations, and ensure the long-term efficient operation of the axial flow pump.

This invention discloses a high-flow-rate, large-diameter inclined axial flow pump, comprising a straight pipe, a bend, and a main shaft. One end of the main shaft is coaxially rotatably disposed within the straight pipe, while the other end rotatably penetrates the outer wall of the bend. The pump also includes: a sealing seat disposed on the bend and penetrated by the rotation of the main shaft; an isolation chamber disposed within the sealing seat, with a guide port near the bend end connecting to the interior of the bend and surrounding the main shaft; a circulation pipeline disposed outside the bend, with one end connecting to the isolation chamber and the other end connecting to the interior of the bend; and a flow guiding assembly disposed within the isolation chamber for guiding the liquid within the isolation chamber into the circulation pipeline. By incorporating the circulation pipeline and flow guiding assembly, this invention allows liquid impacting the connection between the bend and the main shaft to be actively guided from the guide port into the isolation chamber, then into the circulation pipeline, and finally back into the bend, thus forming a stable circulation path and isolating the sealing connection between the main shaft and the bend from the influence of the liquid.

The application discloses a kind of steady-state pump cavitation identification model training methods based on transmutation relation, this method is under the steady-state condition of pump and is collected pressure fluctuation signal and / or vibration signal, and forms original sample with label by window division;Build transmutation relation library suitable for cavitation identification, core transmutation relation includes measurement disturbance keeping class and steady-state window resampling keeping class, can optionally include bimodal collaborative keeping class;Based on the transmutation relation generates a limited number of transmutation samples;Original sample and transmutation sample are jointly input into identification model, construct classification constraint according to real label, construct transmutation consistency constraint according to the output difference of both, jointly train cavitation identification model;And can be in inference phase by a small amount of transmutation sample to carry out stability evaluation to identification result.This method can also be applied to mixed flow pump, axial flow pump, centrifugal pump and other various pump types, and can improve the intelligence, stability and robustness of steady-state pump cavitation.

This utility model relates to the field of structural and bearing sealing technology for small and medium-sized axial flow pumps, and particularly to a small and medium-sized axial flow pump that is easy to maintain and replace. It includes a water tank, a variable frequency motor mounted on the top of the water tank, a second sealing layer fixedly connected between the bottom of the water tank and the variable frequency motor, a low-pressure inlet pipe fixedly connected to the bottom of the water tank, a first sealing layer fixedly connected between the low-pressure inlet pipe and the bottom of the water tank, and an outlet pipe fixedly connected inside the water tank. By changing the pump's discharge structure and adopting a water tank supply and discharge method, the entire pump can be lifted out directly for maintenance and replacement of vulnerable parts, making assembly and disassembly very convenient and quick. It can also be used as a mobile drainage device. The structure of the lower bearing is changed from a sliding bearing to a rolling bearing, and a combined skeleton oil seal is used for sealing, making the product more widely applicable. The mounting surface is sealed with a rubber gasket, making it better suited for longer-distance transportation.

The utility model discloses a kind of axial flow multistage cyclone separator structure, including two support frames and respectively fixedly connected in the first cyclone separator and second cyclone separator of two support frames, the bottom of the first cyclone separator and second cyclone separator is fixedly connected with multiple recess blocks. The utility model not only can make clamping block separate from clamping groove, rotate receiving tank to make protruding block separate from recess block, thereby disassembling receiving tank, reduce the operation difficulty when disassembling and installing, reduce the working difficulty and time cost of installation, but also can be separated in the first cyclone separator Gas is extracted by the extraction effect of axial flow pump and enters the conveying pipe along the axial direction, improves conveying efficiency, also can clearly observe the height of material through visual window, thereby the current material height value is shown by scale, improve the convenience of device.

1. Name of the product in this design: Axial Flow Pump. 2. Purpose of this design: This design is used for conveying liquids. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The application provides a mixed flow channel differential pressure flow measurement system of a large-scale inclined axial flow pump and a mounting method thereof, comprising: a pump station water inlet flow channel, which is characterized in that a front section is smoothly connected to a rear section by a concrete material flow channel and a metal material flow channel; a pressure sensing assembly, which comprises pressure taking structures arranged at cross sections of the concrete material flow channel and the metal material flow channel respectively, pressure introduction pipelines in communication with the pressure taking structures, and a differential pressure sensor connected between the two pressure introduction pipelines, and is used for obtaining a fluid pressure difference signal between the two different material cross sections; a flow measurement processing unit in communication connection with the differential pressure sensor; the flow measurement processing unit is configured to receive the pressure difference signal output by the differential pressure sensor, and calculate a real-time flow of a pump set according to a pressure difference-flow mathematical model rated in advance through a device model test. The application has the characteristics of strong anti-interference ability, standardized installation process and low cost by utilizing the structural characteristics of the pump station flow channel.

The utility model relates to axial flow pump vertical installation technical field, concretely is a kind of installation platform for axial flow pump vertical coupling installation, including installation support, the center of installation support is equipped with installation platform block, support block is installed on the lateral wall of installation platform block, guiding assembly is installed on the bottom outer wall of installation platform block, fixed assembly is installed in the side of guiding assembly through pull rope;The utility model can realize the size of fixed assembly by setting fixed assembly, to suit the axial flow pump body of different models;Through the operation of controller control drive motor operation, through its driving shaft drives rotating lever and drive bevel gear rotation, through bevel gear meshing transmission, driven bevel gear drives rotating lever rotation, and then drive roller synchronous operation, the guiding limit arc groove on the surface of drive roller guides guide rod sliding, limit seat is pushed and moves along guide rod transversely, finally drives hook to unfold outward, realizes the position adjustment to axial flow pump body.

The present application belongs to the technical field of shaft flow pump seal flushing, and particularly relates to a machine seal flushing self-adaptive compensation system for a polyethylene shaft flow pump. The present application comprises a pump body with a pump cavity, and a front end bearing arranged in the pump body. The present application is characterized in that it comprises a compensation type piston cylinder with an axis arranged vertically, and a return cavity of the compensation type piston cylinder is located above a feed cavity. An oil inlet compensation pipeline is connected to the return cavity at one end and to a front end flushing pipeline where a high speed pump is located at the other end. A balance pipeline is connected to the feed cavity at one end and to a lubricating cavity where the front end bearing is located at the other end. The present application realizes an instant online compensation function of flushing liquid after interruption of flushing, thereby ensuring continuous lubrication and cooling effect of the bearing in the pump cavity and ensuring safety and continuity of high density polyethylene production.

The application discloses a pipeline medium adaptive adjustment control system and device, relates to the technical field of axial flow pump control, and discloses a pipeline medium adaptive adjustment control system, which comprises an axial flow pump, a pressure monitoring module, a blade angle adjustment module and a main control module, the axial flow pump is integrated with a motor, the pressure monitoring module is used for monitoring pipeline pressure to generate a pipeline pressure signal, the blade angle adjustment module is used for adjusting the blade angle of the axial flow pump, the main control module is used for receiving the pressure signal, controlling the blade angle adjustment module to adjust the blade angle according to the pressure signal, and / or adjusting the rotating speed of the motor to change the water yield and lift of the axial flow pump, so as to adjust the pipeline pressure, and thus, according to the real-time pressure condition in the pipeline, the rotating speed and the blade angle of the axial flow pump are adjusted, the rotating speed of the motor is prevented from frequently and greatly fluctuating, and the service life of the motor is prolonged.

This utility model relates to the field of vertical axial flow pump technology, and discloses a multi-foundation long-shaft vertical axial flow pump, including a motor, a pump shaft, a pump shaft support base, a pump body, a motor base, and a pump body support plate. The motor is fixed to the top of the motor base with bolts, and the motor base is used to support and fix the motor. The pump body is vertically fixed with a pump body support plate for supporting the pump body. The pump shaft support base is located between the motor base and the pump body. The upper end of the pump shaft is connected and fixed to the drive end of the motor, and the lower end of the pump shaft is connected and fixed to the impeller in the pump body. The middle part of the pump shaft is rotatably installed in the pump shaft support base. The pump shaft support base includes a pump shaft support plate, a central bearing seat, and a rib plate. The central bearing seat is fixed to the upper center of the pump shaft support plate. This utility model facilitates installation and fixation, ensures the stability of the axial flow pump during operation, reduces pump shaking, and improves its working stability.

This invention discloses a hydraulic design method and system for impeller-guide vane coupling matching of high specific speed submersible axial flow pumps, belonging to the field of fluid machinery technology. The method includes the following steps: S1, accurate calculation of impeller diameter; S2, hub ratio graded optimization; S3, blade cascade density collaborative design; S4, blade comprehensive parameter design; S5, guide vane hydraulic quantitative design; S6, dynamic coupling matching of impeller and guide vane. It aims to overcome the inherent defects of existing high specific speed submersible axial flow pump hydraulic design technology, and fundamentally solves the problems of large deviations in actual pump performance and poor adaptability across wide specific speed ranges caused by reliance on model pump similarity conversion in existing technologies. Simultaneously, it addresses the problems of excessive pressure pulsation and insufficient operational stability caused by the lack of impeller-guide vane coupling matching in existing designs, as well as the industry pain points of parameter values ​​lacking systematic theoretical support and the inability to simultaneously achieve high efficiency and cavitation resistance due to empirical design.

This utility model relates to the field of injection molding technology for parts, and more particularly to an injection molding device for axial flow pump parts. The device includes a mold box, an injection gun mounted outside the mold box, and an ejection mechanism at the bottom of the mold box. The ejection mechanism includes a push rod, and a lifting mechanism at the bottom of the push rod is responsible for pushing the push rod upward. A cutting blade is mounted on the outer side of the push rod near its top. This utility model has the following advantages: When the push rod rises to a set height, the driven rod enters the driven hole. Because the drive screw continuously rotates the second pulley, the second pulley drives the first pulley to rotate via a transmission belt, indirectly causing the driven rod to rotate with the first pulley. The push rod is also forced to rotate. Since the molded part is fixed by the mold box, rotating the push rod will cut the generated scrap material through the cutting blade outside the push rod, saving the subsequent manual scrap cutting step.

The utility model provides a kind of cross break structure for Swenson phosphoric acid concentration process, its technical scheme is: including cross break cylinder, first baffle and second baffle are fixed in the inner wall of cross break cylinder, first baffle and second baffle are mutually perpendicular arrangement, the size of first baffle and second baffle is exactly the same, first flange and second flange are fixed in the top and bottom of cross break cylinder, first flange is connected with the lower liquid pipe of flash chamber, and the import of second flange is connected with axial flow pump.The utility model has the beneficial effects that: (1) strengthen structural stability, resist vortex scouring and vibration;(2) optimize flow state control, guarantee the efficient operation of axial flow pump.

This invention discloses a helical axial flow pump, comprising a stator, a rotor, a first liquid-collecting speed-reducing turbine, and a second liquid-collecting speed-reducing turbine. The first and second liquid-collecting speed-reducing turbines are connected to both ends of the stator, respectively. Multiple first helical grooves are evenly distributed on the inner circumferential surface of the stator. The rotor is rotatably disposed within the stator and located between the first and second liquid-collecting speed-reducing turbines. Multiple second helical grooves are evenly distributed on the outer circumferential surface of the rotor, with the second helical grooves rotating in the opposite direction to the first helical grooves. Each second helical groove has a radial suction hole at its end near the first liquid-collecting speed-reducing turbine, and each radial suction hole communicates inwardly with the inner discharge ring groove of the first liquid-collecting speed-reducing turbine. The end of each second helical groove near the second liquid-collecting speed-reducing turbine communicates with the liquid inlet channel of the second liquid-collecting speed-reducing turbine. This invention is suitable for transporting high-viscosity gas-liquid mixtures. The rotor has good overall structural rigidity, solving the dynamic balance problem of radially cast impellers in conventional submersible centrifugal pumps, and is suitable for medium- and high-speed operation.

This invention belongs to the field of axial flow pump technology and provides a permanent magnet full-flow electric pump with a labyrinth-type shaft seal structure. It includes a suction chamber, an impeller, and a discharge cylinder coaxially connected in sequence. The impeller is rotatably connected between the suction chamber and the discharge cylinder via a connecting shaft. A bearing is installed between the impeller and the connecting shaft. Shaft seal sleeves are installed at both ends of the impeller, and these sleeves enclose the bearings in the middle. The shaft seal sleeves form a structure that blocks contaminants between the suction chamber and the discharge cylinder. This contaminant-blocking structure includes a labyrinth gap one, a sedimentation chamber, and a labyrinth gap two connected sequentially from the outside in. Both labyrinth gap one and labyrinth gap two are multi-stage continuous bending structures. This achieves graded blocking and retention of minute contaminants carried in the water, greatly reducing the possibility of contaminants contacting the bearings and connecting shaft, and improving the durability and reliability of the electric pump in water containing contaminants.

The utility model relates to a kind of axial flow pump structure based on import prewhirl and impeller outlet without circulation quantity design, the structure includes: front guide vane, impeller, cylinder;Front guide vane is set on inlet horn pipe, front guide vane is set on the circumferentially uniform distribution of front guide vane blade, the outlet of impeller is directly connected on cylinder, and front guide vane is set on the circumferentially uniform distribution of 4~8 pieces of front guide vane blade.Front guide vane blade's installation angle α=15°~45°.The utility model's inlet horn pipe is set front guide vane, when high-speed fluid enters, because of guide vane, fluid particle produces orderly movement in radial and tangential direction, forms prewhirl, effectively optimizes the cavitation performance of axial flow pump.The utility model cancels the structure mode of traditional impeller guide vane matching, directly cancels the non-steady flow of guide vane and impeller Induced non-constant exciting force, while optimizing axial length, greatly reduce installation space and cost.

This invention discloses a nucleogranulation device and its operating method, comprising an annular water distribution pipe installed below a tank, a sludge pipe installed on the tank at the bottom of the annular water distribution pipe, and a granulation reaction zone, a concentration zone, a separation zone, an inclined plate clarification zone, and an overflow trough arranged sequentially from bottom to top above the annular water distribution pipe. A packing device is installed in the separation zone; a drain outlet is provided on the overflow trough; a hollow barrel is located at the center of the granulation reaction zone, and an axial flow pump is installed inside the hollow barrel. The axial flow pump is used to pump part of the water in the concentration zone into the central hollow barrel and transport it to the center of the annular water distribution pipe, with the hollow barrel located directly above the annular water distribution pipe. A water flow disperser is installed at the bottom of the annular water distribution pipe. This invention can increase the operating load, increase the treatment depth, effectively improve the operating load and sludge concentration effect, and the discharged sludge can be directly dewatered, thus improving the effluent quality.

The utility model discloses an axial -flow pump guide vane body protection device relates to axial -flow pump guide vane body technical field. The device includes axial -flow pump guide vane body and wear -resistant cover, and wear -resistant cover has the protection effect to guide vane body, prevents guide vane body and prematurely wears out failure. Wherein guide vane body and wear -resistant cover are fixedly connected through screw, and the below of guide vane body is installed with submersible pump casing, and this submersible pump casing also is connected with guide vane body through screw. Impeller fixedly set up at submersible pump casing top, and rotate in wear -resistant cover, and the wear -resistant cover of polyurethane material has excellent wear resistance to the fluid containing solid particle, and through the wear -resistant cover of polyurethane material of additional installation in guide vane body inside, its inner wall completely covers the working area of impeller, directly bears the fluid scouring and wear and tear that impeller rotates brought, and the wear that originally acts on guide vane body is transferred to wear -resistant cover, thereby effectively protects guide vane body ontology from wearing and tearing damage.

The utility model relates to a vertical chemical axial flow pump with a reduction gearbox, the vertical chemical axial flow pump with a reduction gearbox presents vertical structure as a whole, the vertical chemical axial flow pump includes: the pump body with the elbow pipe and the pump shaft, the lower end of the pump body with the elbow pipe is connected with the impeller chamber, the lower end of the impeller chamber is connected with the trumpet mouth, the upper end of the pump body with the elbow pipe is connected with the reduction gearbox seat, the upper end of the reduction gearbox seat is connected with the motor seat, the reduction gearbox seat is installed with the reduction gearbox, the motor is fixed on the motor seat, the pump shaft passes through the motor seat, the reduction gearbox seat, the pump body with the elbow pipe and the impeller chamber, the upper end of the pump shaft is connected with the reduction gearbox through the shaft coupling, and the lower end of the pump shaft is equipped with the impeller, and the motor is located above the reduction gearbox, the utility model has the advantages of small floor space, can be matched with higher speed motor, better anti - jamming performance, and can increase the service life of the pump shaft.

This application relates to a submersible axial flow pump with a sealing device, comprising an outer cylinder, an inner cylinder, and a cylinder cover. The inner cylinder and outer cylinder are connected by a connecting plate, and the cylinder cover is disposed on the outer cylinder. A drive device is disposed between the connecting plate and the inner cylinder. A first sealing device is disposed between the cylinder cover and the outer cylinder, and a second sealing device is disposed between the drive device and the inner cylinder. The first sealing device includes a rubber sleeve, an elastic connecting ring, and a locking assembly. Both the cylinder cover and the outer cylinder have a first stepped groove, and the outer cylinder has a second stepped groove. The cylinder cover abuts against the bottom wall of the second stepped groove. The rubber sleeve is fitted onto the first stepped groove, the elastic connecting ring is fitted onto the rubber sleeve, and the locking assembly secures the rubber sleeve. This application uses the first and second sealing devices to seal the drive device, reducing the amount of liquid entering the power supply section of the drive device, thereby reducing the possibility of safety hazards in the drive device.

This invention discloses a water-cooled axial flow pump, comprising a pump casing, a bulb body housed within the pump casing, and a bearing mounted within the bulb body. A water flow channel is formed between the pump casing and the bulb body. The bearing is a bearing with a water-cooled cavity, and the bulb body outer shell forms a heat dissipation cavity. A common heat exchange wall is provided between the heat dissipation cavity and the water flow channel. The heat dissipation cavity and the water-cooled cavity of the bearing are interconnected, and the two can cooperate with a cooling medium circulation supply system to form a series cooling circuit. This invention utilizes the axial flow pump itself to transport the medium for heat exchange, eliminating the need for external cooling equipment. It features a compact structure, high cooling efficiency, and strong adaptability, and can be widely applied to bearing cooling of various types of axial flow pumps.