56results about How to "Effective flushing" patented technology

The utility model belongs to the technical field of medical instruments, and particularly relates to an orthopedic cleaning device which comprises a cleaning box. A box cover is mounted at the top of the cleaning box; a water inlet pipe is fixedly connected to the middle of the box cover; the water inlet pipe penetrates through the middle of the tank cover; the end part of the water inlet pipe is fixedly connected with an annular pipe; a plurality of spray heads are fixedly connected to the middle part of the annular pipe; the multiple nozzles are distributed at equal intervals; a brush rod is fixedly connected to the middle of the box cover; the annular pipe and the brush rod are fixedly connected to the interior of the cleaning box; a motor is mounted at the bottom of the cleaning box; the output end of the motor penetrates through the bottom of the cleaning box; a mounting assembly is mounted at the output end of the motor; by means of the structure, the orthopedic instrument can be driven to continuously rotate in the cleaning fluid, certain flushing force is generated, stains and bloodstain impurities attached to the surface of the instrument are effectively flushed away, all parts of the instrument can make full contact with the cleaning fluid, and stains generated at dead corners in the cleaning process of the instrument are reduced.

This utility model relates to the field of cell disruption and filtration technology, and more particularly to a self-cleaning, anti-clogging cell disruption and filtration device. The technical solution is as follows: A self-cleaning, anti-clogging cell disruption and filtration device includes a shell, a collection frame, a fixed ring plate, a connecting shaft, and a fixed shell; the collection frame is slidably placed at the lower part of the shell, the fixed ring plate is fixedly connected inside the shell, the connecting shaft is rotatably connected to the upper part of the fixed ring plate, and the fixed shell is fixedly connected to the left side of the shell. This utility model performs preliminary filtration through a filter membrane, trapping larger fragments, while small particles and liquid permeate through the filter membrane into the collection frame. A motor drives the connecting shaft to rotate, causing the filter membrane to rotate slowly, evenly distributing cell fragments and avoiding localized accumulation. When the ultrasonic generator is activated, the high-frequency electrical signal is converted into mechanical vibration, and the resulting "cavitation effect" not only effectively breaks down the cell membrane but also releases the cell contents.

The utility model discloses veterinary drug liquid preparation filling equipment easy to clean, relates to the technical field of veterinary drug filling equipment, and solves the problems that in the prior art, cleaning of a filling head is time-consuming and labor-consuming, and the utilization rate of the equipment is reduced. Comprising a filling mechanism, the filling mechanism comprises a machine body, filling heads and a piston pump, the piston pump is connected to the upper end of the machine body, the filling heads are connected with a liquid outlet pipe of the piston pump through liquid conveying pipes, a liquid inlet pipe of the piston pump is connected with a cleaning pipe through a three-way valve, and the cleaning pipe communicates with a cleaning agent storage box; the cleaning agent storage box is connected to the upper end of the machine body; a cleaning tank is arranged at the lower end of the filling head, a conveying mechanism is arranged at the lower end of the cleaning tank, and the conveying mechanism corresponds to the filling head. The cleaning device has the beneficial effects that the piston pump and a connecting pipeline of the piston pump can be cleaned, residual liquid medicine in the filling head can be thoroughly cleaned, and the residual liquid medicine is prevented from breeding bacteria.

The utility model discloses a filter device of circulating backwash, including filter casing, install a set of bearing seat in the inner chamber of filter casing upper end, bearing seat is sealed with a set of filter core rotation connection, and the rotation action can be realized to filter core through drive assembly, and cooperate transmission assembly and drive cleaning brush rotation, the utility model centrifugal force throws out high -speed water flow, and the impact force of impurity is greatly promoted, and the mechanical cleaning of cooperation cleaning brush, under double effect, can more efficiently remove strong viscosity, firmly attached contaminant and deep pore small impurity, and backwash efficiency improves obviously, and high -efficient backwash reduces backwash frequency and time, and water flow energy consumption is reduced, simultaneously, the filter core is because clean thoroughly, and the service life is extended, and the frequency of replacement is reduced, and the overall operation cost is reduced.

This utility model discloses a shaping, cooling, and cleaning device for pigskin puffing processing, including a spraying mechanism and a feeding mechanism. The spraying mechanism includes a clean water tank, a water supply pipe, a diversion pipe, and a spray pipe. The feeding mechanism includes an equipment frame, a chain conveyor belt, a hanger, a drive motor, a submersible pump, and cleaning wheels. The hanger is fixedly installed on the upper surface of the equipment frame. The drive motor is installed on the side surface of the equipment frame to drive the chain conveyor belt and cleaning wheels. The submersible pump is installed in the water supply tank and supplies water to the diversion pipe through the water supply pipe. The diversion pipe is connected to the top of the spray pipe, and the spray pipe is movably installed on the equipment frame. This utility model has the advantages of adjustable spray angle, self-cleaning conveyor belt, and thorough cleaning, solving the problems of incomplete cleaning and cross-contamination caused by traditional equipment.

A device for increasing the heat exchange efficiency of a methanol reaction gas heat exchanger belongs to the field of methanol-to-olefins technology. It comprises a feeding hopper, shut-off valves, a pressure tank, a local pressure gauge, and a methanol reaction gas heat exchanger. The bottom of the feeding hopper is connected to the top of the pressure tank via a pipeline equipped with a first shut-off valve. A second shut-off valve is located between the pressurized nitrogen pipeline and the pressure tank. The bottom of the pressure tank is connected to the tube-side inlet of both the first and second methanol reaction gas heat exchangers via pipelines equipped with a third shut-off valve. Nitrogen pipelines are connected to the tube-side inlet of both the first and second methanol reaction gas heat exchangers via fourth and fifth shut-off valves. This invention utilizes the pressure stored in the pressure tank and the nitrogen supply to deliver calcium hydroxide particles to the upper end of the tube side of the methanol reaction gas heat exchanger, causing them to flush the inner wall of the tube side from top to bottom, thereby increasing the heat exchange efficiency, reducing energy loss, and decreasing the load on the water system.

The utility model relates to a pig farm cleaning equipment, including pigsty, is equipped with cleaning mechanism in pigsty, and cleaning mechanism includes: casing, sets up in pigsty, water tank, sets up in the casing, water pump, sets up water tank, and water pump's water inlet communicates with water tank, water pipe, sets up in the casing, and water pipe communicates with the water outlet pipe of water pump, multiple shower nozzles, transverse array sets up on water pipe, and the shower nozzle communicates with water pipe, two groups of moving assembly, and moving assembly includes: track, two groups of moving assembly's track sets up in the left and right inner wall of pigsty respectively, multiple mobile teeth, set up on the track, gear, set up in the track, and with multiple mobile teeth engage, motor, set up in the casing, and the transmission shaft of motor is fixed assembly after going out casing with gear, through setting up cleaning mechanism, to pigsty ground carries out cleaning, through setting up moving assembly, to drive cleaning assembly to move, improves the cleaning area.

The utility model relates to the technical field of drainage collectors, and discloses a drainage collector capable of cleaning the interior, a floating ball switch is additionally arranged on one side of a trap, water is drained from a water supply pipeline through a water guide pipe, an electromagnetic valve is arranged in the middle of the water guide pipe, and when the water level in the trap is detected to be too low, the electromagnetic valve is opened, and the water level in the trap is closed. When the anti-blocking floor drain is blocked, the electromagnetic valve is opened, water is supplemented into the trap pipe through the water guide pipe, the situation of odor returning caused by the low water level can be avoided, the anti-blocking floor drain is installed in a floating mode through the spring, the contact switch is arranged on the lower portion of the anti-blocking floor drain, and when the anti-blocking floor drain is blocked, the contact switch is switched on. When the anti-blocking floor drain is used, the pressure of the anti-blocking floor drain is increased due to water accumulation, the thrust of the spring is overcome to press the contact switch, water is conveyed to the flushing cylinder seat through the water guide pipe, and automatic flushing and cleaning of the anti-blocking floor drain can be realized without manual operation; leakage holes in the peripheral side and the lower portion of the anti-blocking floor drain can be effectively washed and cleaned through the washing spray holes.

The utility model discloses a hip joint ball head fluorescent detection and cleaning exhaust frock, including top placing frame, the bottom mounting plate is connected to the below of top placing frame, the top mounting plate is connected to the top of bottom mounting plate, install the ball head and place the column on top mounting plate, and the hip joint ball head body is placed on the ball head and place the column, be provided with the airway flow through component on the bottom mounting plate, be provided with the draft tube on the bottom mounting plate, and the draft tube is linked together with airway flow through component, the one side of bottom mounting plate is provided with the valve body, after the hip joint ball head body removes the fluorescence liquid, and the water flow is injected from the draft tube in the stage of shower, and the water flow of injection passes through horizontal connecting hole, vertical communicating hole, air hole, and the liquid that the internal hole conical surface of hip joint ball head body is attached is washed effectively, and it is more convenient to wash, avoid the air resistance that the internal cavity is filled with gas, lead to cleaning fluid to be unable to contact cavity inner wall completely, cause local area cleaning blind area.

The utility model provides a kind of oblique membrane plate's desulfurization tower, including desulfurization tower body, circulating spray mechanism, scale removal spray mechanism and baffle;Flue gas enters desulfurization tower body inside by smoke inlet pipe, and enters into desulfurization passage, and contact with the desulfurization lye that circulating spray mechanism sprays realizes desulfurization, and the contact path and contact time of flue gas and desulfurization lye are increased in the desulfurization passage of baffle composition, force flue gas to generate turbulent flow, improve gas-liquid mass transfer efficiency, to improve desulfurization efficiency, and by the spray head of last setting direct alignment possibly formed in baffle below " dry area ", carry out supplementary spray, help to eliminate desulfurization blind area, improve overall desulfurization uniformity and efficiency, by switching three-way valve, spray head can also spray scale removal agent on baffle, can effectively flush scale face on baffle, avoid the influence of airflow circulation of brushing baffle scale.

This utility model discloses a phosphate rock slurry filtration device, belonging to the field of phosphate rock processing technology. It includes a filter box and filter plates located within the filter box. The bottom of the filter box is provided with a corrugated bottom plate, which includes multiple adjacently arranged recesses and protrusions. Each protrusion corresponds to a filter plate, and the filter plate is inserted into the protrusion. Each recess has an inlet on one side and an outlet on the other side. This utility model, through the corrugated bottom plate and multiple filter plates located on the protrusions, can effectively filter the slurry while ensuring that filtered impurities settle in the recesses, reducing secondary filtration and improving the overall filtration effect of the filter box. Furthermore, the filter plates can be easily removed from the chute and slot for cleaning or replacement by lifting them.

The utility model relates to the technical field of thin oil pipelines, in particular to an efficient flushing and filtering device for a thin oil pipeline. Comprising a main pipe, an oil inlet connector, an oil outlet connector, a cooling structure and a filter screen. The oil inlet connector and the oil outlet connector are fixedly connected to the two ends of the main pipe respectively, the oil inlet connector is connected with the oil outlet pipe, and the oil outlet connector is connected with an oil return opening pipeline of the oil tank. The cooling structure is installed on the outer wall of the main pipe and cools liquid in the main pipe. First to N stages of filter screens are sequentially arranged between the oil inlet connector end and the cooling structure, N is larger than or equal to 3, and more than N stages of filter screens are arranged between the cooling structure and the oil outlet connector. A thin oil pipeline, especially a thin oil pipeline with a certain length, can be efficiently flushed and filtered; the structure is simple, use is easy, and cost is greatly saved.

The utility model discloses a flushing device for a collecting hopper of a cleaning box, which solves the problem of flushing and pollution discharge of the collecting hopper in a low-cost manner and improves the running stability of the cleaning box. The flushing device of the cleaning box collecting hopper comprises a flushing mechanism and a water tank. The flushing mechanism is arranged in a collecting hopper of the cleaning box and comprises a cover plate, a flow guide plate and a water outlet control plate; the cover plate and the collecting hopper are relatively fixed; the lower surface of the flow guide plate is attached to the bottom wall of the collection hopper, and a water passing cavity communicated with the water tank is defined by the flow guide plate and the cover plate; the water passing cavity is arranged in the side wall direction of the collecting hopper, and a water outlet facing the bottom of the collecting hopper is formed in the side edge of the bottom of the water passing cavity. The water outlet control plate is matched with the side edge of the water passing cavity in a height-adjustable mode and used for adjusting the effective opening size of the water outlet.

The utility model discloses a raw material cleaning device of feed processing, including bottom support frame, the bottom support frame top fixedly connected with the fender, fender one side fixedly connected with the controller, fender top fixedly connected with the baffle, and the bottom support frame top fixedly connected with four electric telescopic link, and the collection bucket top fixedly connected with the collection bucket, and the collection bucket passes through the baffle, and the baffle top fixedly connected with the shaking mechanism, and the shaking mechanism inside fixedly connected with the mixing drum, and the mixing drum bottom fixedly connected with the filter mechanism, and the mixing drum one side fixedly connected with the inlet, and the mixing drum top fixedly connected with the top plate, and the top plate top fixedly connected with the mixing mechanism, and the mixing mechanism passes through the top plate, and the mixing drum inside swing joint has the mixing mechanism, the utility model discloses can orderly complete the input of feed raw material, mix and wash, solid -liquid separation and filter dry etc. steps, improve the efficiency of feed raw material cleaning greatly, provide clean raw material for subsequent feed processing.

This utility model discloses a rotating spray semiconductor cleaning device, relating to the field of semiconductor cleaning technology. The rotating spray semiconductor cleaning device includes a housing, inside which a cleaning mechanism is installed for cleaning semiconductors. The cleaning mechanism includes a drive assembly, which includes an electric push rod fixedly mounted on the top of the housing. A support rod is fixedly mounted on the top of the electric push rod, and a support frame is fixedly mounted on the bottom of the support rod. When the support frame rotates, it drives the spray head to rotate clockwise and counterclockwise around the semiconductor at a 120-degree angle, allowing the cleaning fluid to be sprayed onto the surface of the semiconductor from multiple directions, such as the sides and bottom, avoiding dead zones caused by spraying in one direction. The electric push rod can flexibly adjust the height of the semiconductor through the support rod and the support frame, ensuring that the semiconductor is always within the optimal spray range of the spray head, further ensuring that all areas of the semiconductor surface are effectively cleaned by the cleaning fluid.

The present invention discloses a flow channel assembly for a membrane element, the flow channel assembly comprises: a flow channel element, the flow channel element is concaved inwards to form a plurality of concave structures and is convex outwards to form a plurality of convex structures, and the plurality of concave structures and the plurality of convex structures are distributed in a staggered manner; the flow channel element comprises a water inlet section, a transition section and a water outlet section in the first direction, and the density of the multiple concave structures and the density of the multiple convex structures are gradually increased in sequence along the water inlet section, the transition section and the water outlet section. Through the gradient design that the density of the concave-convex structures of the water inlet section, the transition section and the water outlet section is gradually increased, water flow resistance at the water inlet end is reduced, pressure loss is reduced, and it is guaranteed that water flow enters rapidly and stably; the transition section realizes stable transition of water flow from a low-resistance state to a high-turbulence state and prevents the water flow from impacting the surface of the membrane; the high-density concave-convex structure at the water outlet end generates strong turbulence to effectively scour a concentration polarization layer on the surface of the membrane, low resistance and high turbulence are both considered, the scale deposition risk is reduced, and the service life of the membrane element is prolonged.

This invention discloses a photoresist stripping device that avoids parasitic gate effects and murex patterns. The photoresist stripping device is sequentially configured with a drying zone, a stripping zone, a hot water washing zone, an ultracooled water washing zone, and an air drying zone according to the substrate transport direction. A hot air knife for blowing hot air onto the substrate surface is provided at the outlet of the stripping zone. A second spray pipe for spraying hot water onto the substrate surface is provided in the hot water washing zone. A cold air knife for blowing cold air onto the substrate surface is provided at the inlet of the ultracooled water washing zone. A third spray pipe for spraying ultracooled water onto the substrate surface is provided in the ultracooled water washing zone. The photoresist stripping device also includes a vortex tube, a heating device, and a cooling device. This invention avoids the product yield and quality risks caused by parasitic gate effects and murex patterns; it also ensures the versatility of the photoresist stripping equipment, which is beneficial for production line logistics optimization and capacity improvement.

The utility model relates to the technical field of plant blight processing devices, and discloses an extracting and filtering device for processing a composition for preventing and treating asparagus stem blight, which comprises a fixed support frame, a water tank support plate fixedly mounted on the outer wall of the fixed support frame, and an inner side wall of the fixed support frame. An installation water tank is arranged to supply water to a fixed long water box through a conveying water pump and a water conveying pipe, cleaning nozzles on the installation water tank can preliminarily flush the inner wall of a filter cartridge, a sleeve water box is matched to receive cleaning water through a connecting hose, and spraying holes achieve rotary spraying during rotation, so that the cleaning range is expanded, and it is ensured that all parts are effectively flushed; the two groups of mounting rings rotate along with the rotating rod to drive the inner-ring vertical scraping plate to scrape residual impurities on the inner wall of the filter cartridge, and the L-shaped outer-ring scraping plate to scrape impurities on the outer wall and the top of the filter element net, so that the filter part is effectively cleaned, the influence of impurity accumulation on the subsequent filter effect is prevented, and the effect of improving the cleaning and filtering efficiency is achieved.

This invention relates to a test platform and method for jet pumps used for aeration and oxygenation. The test platform includes a receiving platform, a storage tank, an aeration tank, an atmospheric supply system, a power supply mechanism, a detection module, and a control system. The receiving platform is equipped with a clamping mechanism containing a hydraulic system for clamping the jet pump. The storage tank is filled with water to be treated, and the jet pump outlet is connected to the aeration tank. The power supply mechanism includes a solenoid valve, a frequency converter, a centrifugal pump, and a lifting assembly. The control system regulates the flow rate and pressure of the centrifugal pump by adjusting the frequency converter. The centrifugal pump is connected to the jet pump, providing high-pressure water as the driving fluid for the jet pump. The detection module is connected to the control system to monitor and record real-time data during the test period, ensuring the stability of the test environment. This invention can simulate the aeration effect of jet pumps of different sizes under different outlet water pressures.

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 utility model discloses a MBR membrane assembly of uniform aeration, including membrane frame, membrane silk unit and water collecting pipe, and membrane silk unit is installed on membrane frame, and is linked with water collecting pipe, still include aeration assembly and flow guide component, and aeration assembly is located membrane silk unit below, and aeration assembly includes annular aeration main pipe and several even distribution's aeration branch pipe, and aeration branch pipe is perpendicular to the width direction of membrane silk unit, and two rows of aeration holes are opened along the axis symmetry on aeration branch pipe, flow guide component includes two side baffles, and side baffle is located membrane silk unit outside and leans to outside. The utility model discloses adopt annular aeration main pipe and several even distribution's aeration branch pipe, let bubble can be more evenly distributed in each area of membrane silk unit, make the sludge on the surface of membrane silk can be timely and effectively washed away, prolongs the service life of membrane silk.

This utility model discloses a burr removal mechanism for magnetic cores of different sizes, belonging to the field of magnetic core burr removal technology. It includes a water tank with a support frame on top and a drive motor mounted at the bottom. The drive motor output has a rotating shaft, and the top of the shaft has a turntable. A protective cover is provided on the top of the water tank. A water pump is installed inside the water tank, and the pump output has a water outlet pipe. The other end of the water outlet pipe passes through the water tank and the protective cover and has a rotary joint. The other end of the rotary joint has a drain pipe with a row of spray nozzles at the bottom. A water inlet is located on the top of the water tank. By starting the water pump, water inside the tank is drawn to the drain pipe and spray nozzles, achieving the effect of washing away burrs and debris generated during magnetic core grinding. The water flow effectively washes away burrs and debris from the surface and crevices. During grinding, the water flow also provides some cooling, preventing the grinding roller and magnetic core from overheating.

The utility model provides a pesticide residue detection and analysis device which comprises a device body, a shell and a crushing chamber located in the shell are arranged on the device body, a crushing roller set is arranged in the crushing chamber, and a material guide pipe is fixedly connected to the outer wall of the crushing chamber. The top of the material guiding pipe is fixedly connected with a coaxial feeding pipe with the inner hole diameter smaller than the inner hole diameter of the material guiding pipe, and the top of the feeding pipe penetrates through and is axially connected with a transmission shaft in a sliding mode. A material guide pipe is connected to the outer wall of a crushing chamber, one end of the material guide pipe is connected with a feeding pipe, the outer wall of the feeding pipe is connected with a pressure pipe, then a sealing disc capable of axially sliding is arranged in the feeding pipe, and when an inner cavity of the crushing chamber needs to be cleaned, the sealing disc is controlled to move upwards to a limiting position, and then high-pressure water is injected into the crushing chamber through the pressure pipe; and when the high-pressure water body flows through the crushing chamber, residues in the crushing chamber can be effectively flushed, so that the accuracy of drug residue detection is improved.

The utility model discloses a kind of water boiling equipment with self-cleaning function, comprising: machine body, cleaning device, machine body has water boiling groove, for water-boiling noodle product and is equipped with drain, wherein, cleaning device is arranged inside machine body and includes: liquid storage tank, spraying assembly, slagging structure, control unit.Liquid storage tank is configured to store cleaning fluid, spraying assembly pipeline is connected in liquid storage tank, spraying assembly is configured to spray cleaning fluid towards water boiling groove, slagging structure is configured to remove residue in water boiling groove, control unit is electrically connected with slagging structure, spraying assembly, control unit is configured to control slagging structure, spraying assembly start when water boiling equipment stops.This application provides water boiling equipment, cleaning device is provided to clean inside equipment, and the electrical connection of control unit and cleaning device is utilized, to achieve without manual intervention, the effect that water boiling equipment automatically carries out internal cleaning, it is beneficial to save the cleaning time of operator, improve production efficiency.

This invention discloses a solar collector panel for buildings, relating to the field of solar collector panel technology. It includes a movable block, a long plate, a flexible plate, a chemical tube, an L-shaped block, a protrusion, and an irregular rod. The movable block is threaded onto the circumferential surface of a reciprocating screw. The long plate is fixedly installed at the bottom of the movable block. The flexible plate is rotatably installed at the bottom of the long plate. The chemical tube is fixedly installed on the side of the long plate away from the motor. The L-shaped block is fixedly installed on the front of the long plate, and the end of the L-shaped block away from the motor can elastically extend and retract. The protrusion slides through the front of the L-shaped block near the left side. The irregular rod is fixedly installed on the side of the protrusion away from the motor. This design ensures maximum sunlight reception, maintains high power generation efficiency, protects the physical structure of the solar panel, extends its service life, significantly reduces the frequency of manual cleaning, and lowers maintenance costs and safety risks.

The utility model provides a rack quenching device, belongs to the technical field of rack quenching, and aims to solve the problems that the contact part of a rack and a clamp is blocked by the clamp, effective quenching is difficult to realize, and the quenching efficiency of the rack is influenced. Comprising a quenching machine supporting base, a limiting electric push rod, a positioning negative pressure suction nozzle, a first supporting table, a second supporting table and a pressure sensor. The limiting electric push rods are connected to the left side and the right side of the quenching machine supporting base through bolts. The positioning negative pressure suction nozzle is fixedly connected to the inner side of a piston rod of the limiting electric push rod; the first supporting table is fixedly connected to the left side of the quenching machine supporting base; the second supporting table is fixedly connected to the right side of the quenching machine supporting base; the pressure sensor is fixedly connected to the right side of the first supporting table and the right side of the second supporting table. According to the utility model, the quenching position of the rack is not shielded, so that the quenching effect of the rack is ensured, and the quenching efficiency of the rack is improved.

The utility model discloses an impeller for a miniature axial flow blood pump, which comprises a hub, twisted blades, a shaft hole and a drainage hole, and the outer diameter of the hub is gradually increased from the head to the tail; the twisted blade is arranged on the surface of the hub and comprises a blade root close to the hub, a blade tip away from the hub, a blade front edge and a blade tail edge. The shaft hole is formed in the tail end face of the impeller rotor and can be used for installing an impeller shaft. And the drainage hole is formed in the tail part of the hub. The utility model discloses simple structure, improve the blood flow velocity to reduce the thrombosis.

The utility model discloses a bridge pile foundation anti-scour structure which comprises an anti-scour protection wall and an isolation layer, the anti-scour protection wall is annular, the anti-scour protection wall is arranged outside a pile foundation body in a sleeved mode, the bottom of the anti-scour protection wall abuts against a riverbed, and the top of the anti-scour protection wall is located above a flowing water face. The anti-scouring protection wall comprises concrete and protection wall steel bars, and the protection wall steel bars are arranged in the concrete. A gap is formed between the anti-scouring protection wall and the pile foundation body, and the isolation layer is arranged in the gap. The technical effects are achieved as follows: the scouring of water flow to the pile foundation body is reduced by utilizing the anti-scouring protection wall, the thickness of a pile foundation steel bar protection layer is indirectly increased, the corrosion speed of pile foundation steel bars is slowed down, and the bearing capacity of the pile foundation body is guaranteed; the anti-scour protection wall is not influenced by the elevation of the river channel scoured by water flow, and the anti-scour protection wall is influenced by self gravity and descends to a riverbed while the scoured elevation of the river channel is reduced; materials required by the anti-scour retaining wall are common materials in construction, so that an existing pile foundation can be conveniently constructed and transformed, and the repair construction cost can be reduced.

The utility model discloses a brake disc air duct foreign matter cleaning device, and relates to the technical field of brake disc cleaning. According to the brake disc air duct foreign matter cleaning device, through reasonable design and cooperative work of all the mechanisms, the machine table is provided with the cleaning cavity and the discharging channel, the cleaning cavity provides a brake disc cleaning space, a liquid inlet of the discharging channel communicates with the cleaning cavity, and waste liquid generated by cleaning can be discharged in time; a clamping piece of the clamping mechanism is arranged in the cleaning cavity, the brake disc can be stably clamped, and it is guaranteed that the position of the brake disc is stable in the cleaning process; the liquid outlet end face of a liquid spraying assembly of the cleaning mechanism faces the clamping piece, cleaning liquid is sprayed to the brake disc, and foreign matter such as scrap iron and oil mist in an air duct is effectively washed away; the collecting mechanism is connected into a liquid outlet of the discharging channel, and waste liquid and impurities generated during cleaning can be collected in a centralized mode. The foreign matters in the air duct of the brake disc are efficiently cleaned, the problem of equipment failure caused by residual impurities is avoided, the personnel load is remarkably reduced, the starting rate of a production line is effectively improved, and then the production efficiency is improved.