2008 results about "Pump head" patented technology

Systems and methods for controlling an implantable pump are provided. For example, the exemplary controller for controlling the implantable pump may only rely on the actuator's current measurement. The controller is robust to pressure and flow changes inside the pump head, and allows fast change of pump's operation point. For example, the controller includes, a two stage, nonlinear position observer module based on a reduced order model of the electromagnetic actuator. The controller includes an algorithm that estimates the position of the moving component of the implantable pump based on the actuator's current measurement and adjusts operation of the pump accordingly. Alternatively, the controller may rely on position measurements and / or velocity estimations.

The utility model discloses an automatic assembling machine for a bacterium-blocking membrane assembly of a dosing pump head, which comprises a machine base, a cam driving device in the machine base and a rotary material conveying mechanism, and a product jig is arranged on the rotary material conveying mechanism. An inner plug feeding mechanism, a filter membrane feeding mechanism, a shell feeding mechanism, a pressing mechanism, a product detection mechanism and a discharging mechanism are sequentially arranged on the machine base in the movement direction of the rotary material conveying mechanism. The inner plug feeding mechanism is used for placing an inner plug on the product jig, the filter membrane feeding mechanism is used for cutting a filter membrane and can place the filter membrane on the product jig, the shell feeding mechanism is used for placing a shell on the product jig, and the pressing mechanism is used for pressing the shell to be connected to the periphery of the inner plug in a sleeving mode. The product detection mechanism is used for detecting whether products on the product jig are qualified or not, and the discharging mechanism is used for moving out the products on the product jig. According to the bacteria blocking module assembling machine, the bacteria blocking module assembly can be automatically assembled, manual participation is not needed, the labor cost is reduced, and the assembling efficiency and the yield can be improved.

The utility model discloses a biphase stable type peristaltic pump unit which comprises a machine shell, a driver, a pump head and an elastic hose, the driver is arranged on the machine shell, the driver is connected with the pump head, the machine shell and the pump head are matched to extrude the elastic hose, the pump head is provided with a rotating shaft connected with the driver, and the rotating shaft is provided with a first rotating assembly and a second rotating assembly. The first rotating assembly is provided with a first extrusion roller, the second rotating assembly is provided with a second extrusion roller, and the first extrusion roller and the second extrusion roller alternately extrude the elastic hose to form phase difference; the pulse phenomenon that the first rotating assembly and the second rotating assembly extrude the elastic hose to output fluid is weakened to a certain degree through the phase difference, and the provided double-phase stable peristaltic pump unit can better achieve stable conveying of the fluid.

The invention provides a modularized flow guide type multi-stage pump, and belongs to the technical field of water pumps. The modularized flow guide type multi-stage pump comprises a pump body assembly and a driving motor, the pump body assembly is formed by sequentially connecting a pump head pattern plate, a multi-stage pump shell, a multi-stage flow guide module set and a water retaining sealing cover, the pump head pattern plate is adjustably connected with a connecting end cover of the driving motor through a long screw rod, and the stage number of the pump can be adjusted by increasing or decreasing the number of the flow guide shells. Different lift requirements are met; the multi-stage flow guide module group is mainly composed of a water inlet flow guide shell, a transmission flow guide shell and a water outlet flow guide shell, a closed impeller is arranged in each flow guide shell to form an independent flow guide module, fluid is guided by spiral flow guide blades between the flow guide shells to orderly flow and smoothly transmit, and turbulent flow eddy current loss is reduced; and the water retaining sealing cover realizes double leakage prevention through a stepped sealing flange and mechanical sealing. The high-lift and high-flow pump has the advantages of being easy to disassemble, assemble and maintain, modularized and flexible to adjust, low in energy loss, high in lift, high in flow and high in sealing performance.

The invention discloses a constant flow metering pump which comprises a cam box, a pump head and a confluence block, a driving mechanism, a cam mechanism and at least two connecting rod mechanisms are arranged in the cam box, and the output end of the driving mechanism drives the cam mechanism to rotate, so that the cam mechanism drives all the connecting rod mechanisms to reciprocate at phase differences; the pump head is provided with cavities in one-to-one correspondence with the connecting rod mechanisms, the cavities are connected with pistons in a sliding mode, the pistons are connected with the connecting rod mechanisms, and when the driving mechanism drives the cam mechanism to rotate by one circle, the pistons alternately suck liquid and discharge liquid; the confluence block is provided with a liquid inlet channel and a liquid outlet channel, all the cavities are communicated with the liquid inlet channel and provided with liquid inlet one-way valves respectively, and all the cavities are communicated with the liquid outlet channel and provided with liquid outlet one-way valves respectively. The technical problems that in the prior art, the pulsation phenomenon occurs in filling, and the filling efficiency is too low can be solved.

The utility model discloses a peristaltic pump which comprises a pump head, an installation inner cavity is formed in the pump head, two installation holes communicated with the installation inner cavity are further formed in the pump head, and a positioning part is arranged in the installation inner cavity. The pump core assembly comprises a rotating core body and a plurality of extrusion rotors, and the extrusion rotors are rotatably arranged on the rotating core body; a positioning matching part is arranged on the outer pipe wall of the pump pipe; wherein the rotating core body is rotatably arranged in the mounting inner cavity, the positioning part is distributed around the outer side of the rotating core body, the pump pipe extends into the mounting inner cavity and is wound outside the rotating core body, the extrusion rotor abuts against the pump pipe, the two ends of the pump pipe extend out of the mounting inner cavity through the corresponding mounting holes, and the positioning matching part is connected with the positioning part. The installation reliability of the pump pipe is improved, so that the flow control accuracy of the peristaltic pump is improved.

The invention discloses a liquid pumping assembly of a hydraulic slurry pump and the hydraulic slurry pump adopting the liquid pumping assembly. The liquid pumping assembly of the hydraulic slurry pump comprises a left oil cylinder, a square box with a box cover, a cylinder sleeve, a pump head, a liquid outlet assembly and a right oil cylinder which are sequentially connected from left to right. The right end of the first power output shaft is connected with a piston capable of transversely moving in the cylinder sleeve through a movable connecting piece located in the square box. A top oil cylinder is vertically arranged at the top end of the pump head, a second power output shaft partially located in an inner cavity of the pump head is vertically arranged at the top of the top oil cylinder, and a first sealing valve is arranged at the bottom end of the second power output shaft. A pump head liquid outlet is formed in the right end of the pump head, a right oil cylinder is transversely arranged at the right end of the liquid outlet assembly, a third power output shaft partially located in an inner cavity of the liquid outlet assembly is transversely arranged in the right oil cylinder, and a second sealing valve is arranged at the left end of the third power output shaft; the liquid outlet assembly is provided with a liquid drainage hole communicated with an inner cavity of the liquid outlet assembly. The invention has the characteristics of stable and accurate flow and pressure and high stability.

The application discloses a kind of micro flow high pressure hydraulic diaphragm metering pump, including pump head and pump body, diaphragm piece is equipped between the pump head and pump body, pump head, including pump head body, feed valve and discharge valve;Pump body, including pump body and plunger assembly, plunger assembly is driven to diaphragm piece by reciprocating motion, plunger assembly includes cylinder sleeve, cylinder sleeve inside is equipped with plunger cavity, plunger cavity is equipped with plunger in cooperation, at least one oil supplement cavity is equipped in plunger cavity, plunger and cylinder sleeve are also equipped with combined sealing mechanism between it.The application is optimized plunger assembly, utilizes long axis plunger, forms small capacity hydraulic oil cavity, with the rapid reciprocating motion of plunger, can realize the high frequency small scale reciprocating operation of diaphragm piece, is suitable for the transmission of small size gauge medium flow passage in pump head, realizes micro high pressure output.

A pump can include a pump head, a body housing, a motor disposed within the body housing, and a motor shaft extending from the motor. The pump head can include a sensor, at least a first interface portion, and at least a first elongate conductor electrically connecting the sensor to the at least a first interface portion. The body housing can include at least a second interface portion and at least a second elongate conductor electrically connecting the at least a second interface portion to pump electronics. The sensor can be configured to sense when the at least a first interface portion does not contact the at least a second interface portion. When the at least a first interface portion does not contact the at least a second interface portion and the pump head is removed from the body housing, the pump head can be pivotable relative the motor shaft such that an orientation of the pump head can be changed with respect to the body housing.

The invention discloses a peristaltic pump and a material mixing method of the peristaltic pump. The peristaltic pump comprises a driving assembly, a pump head and an elastic hose, the elastic hose is installed in an annular groove in the pump head, and the rolling wheel in the pump head is driven by the driving assembly to rotate so as to extrude the elastic hose. The pump head comprises a pump shell and a planetary gear, the annular groove is located in the inner side of the pump shell, a gear ring of the planetary gear is fixed in the pump shell, a sun gear and at least three planetary gears are arranged on the inner side of the gear ring, a planetary shaft of each planetary gear extends upwards, each planetary shaft is sleeved with a rotatable idler wheel, and the idler wheels are arranged on the outer side of the pump shell. The sun wheel is driven to rotate through the driving assembly, and then all the planet wheels drive the corresponding rolling wheels to extrude the elastic hose. According to the peristaltic pump, the function of mixing solutions and the function of mixing the solutions with powder materials and solid materials are added, and the technical defects of an existing peristaltic pump are overcome.

The utility model provides a portable large-flow peristaltic pump, which belongs to the technical field of peristaltic pumps and comprises: a peristaltic pump body, a pump head assembly is installed on one side of the peristaltic pump body, the pump head assembly comprises a first shell, a connecting block, a second shell, a roller frame and a pressing block, a plurality of roller shafts are installed inside the roller frame, the pressing block is slidably connected to the top of the first shell and matches the roller frame, two groups of fixing assemblies are installed on both sides of the peristaltic pump body, and one side of the two groups of fixing assemblies is installed with an adjusting assembly, a hose is installed and fixed by the pump head assembly to prevent the hose from falling off, and hoses of different sizes can be passed through to improve the application range of the equipment, the fixing assembly can fix the hose, and the tension of the hose can be adjusted by the adjusting assembly to avoid shaking of the hose and improve the protection effect of the hose.

The utility model belongs to the technical field of transmission, and particularly relates to a transmission pump which is characterized by comprising a driving device, a first pump head, a second pump head and a pump head switching mechanism linked with the driving device, the first pump head and the second pump head. The pump head switching mechanism is used for controlling the first pump head to work when the driving device rotates in the first direction and used for controlling the second pump head to work when the driving device rotates in the second direction. Wherein the first direction is opposite to the second direction. On one hand, the two pump heads are arranged to meet the conveying requirements of various consumables, pollution between the different consumables can be avoided, on the other hand, control switching of the first pump head and the second pump head can be achieved through forward rotation and reverse rotation of the driving shaft, and conveying control over the different consumables can be achieved through simple control instructions.

The invention provides an extracorporeal membrane oxygenation kit and a using method thereof.The extracorporeal membrane oxygenation kit comprises a pump head, an oxygenator and an extracorporeal circulation pipeline, the pump head is communicated with the oxygenator through the extracorporeal circulation pipeline, the extracorporeal circulation pipeline comprises a pipeline body and quick connectors, the two ends of the pipeline body are connected with the quick connectors, and the quick connectors are connected with the pump head. The pump head is communicated with one end of the pipeline through one quick connector, the oxygenator is communicated with the other end of the pipeline through the other quick connector, each quick connector comprises a female head and a male head, and the female head and the male head are connected in a clamped mode. According to the extracorporeal membrane oxygenation sleeve bag, the pump head, the oxygenator and the extracorporeal circulation pipeline are connected with one another through the quick connector, the quick connector is connected with the male connector in a clamped mode through the female connector for quick connection and disconnection, and therefore quick replacement can be conducted when thrombus appears in the extracorporeal membrane oxygenation sleeve bag.

The invention belongs to the technical field of liquid pumps, and particularly relates to a plunger pump. Four plunger holes are distributed in the pump head in a matrix mode, water inlet one-way valves are arranged in the four plunger holes, a water outlet pipeline communicated with the corresponding plunger hole is arranged on the pump head beside each plunger hole, a first water outlet one-way valve is arranged in each water outlet pipeline, a water catchment channel is further arranged in the pump head, and the water catchment channel is communicated with the water outlet pipelines through communicating holes. The water outlet hole is communicated with the water catchment channel, and a second water outlet one-way valve is arranged on the water outlet hole; the pump head is further provided with a water return channel and a pressure regulating valve hole, the water return channel, the pressure regulating valve hole and the water catchment channel are communicated, and a pressure regulating valve is arranged in the pressure regulating valve hole. The water outlet hole and the pressure regulating valve hole are obliquely formed in the pump head, and the outer ends of the second water outlet one-way valve and the pressure regulating valve extend out of the pump head and are located on the two sides of the water inlet hole; the four plunger holes are distributed in a matrix mode to replace a traditional linear side-by-side layout to share the same water catchment channel and the same water return channel, and space and materials are saved.

The invention relates to a pump head cleaning and transferring device, which relates to the technical field of pump head product ECM post-cleaning procedure, comprises a fixing frame, an X-axis linear guide rail, a grabbing assembly and the like, and is used for automatically cleaning and transferring workpieces; two-dimensional movement of the grabbing assembly is achieved through the X-axis linear guide rail and the Z-axis linear guide rail, and the clamping jaw air cylinder and the clamping jaw are used for grabbing and placing workpieces. The rotary feeding assembly is responsible for feeding of workpieces, comprises a rotary table and a clamping jaw and can accurately position the workpieces. The ultrasonic cleaning table is provided with three cleaning tanks which are used for cleaning at different stages respectively; after cleaning, the pump head is subjected to hot air drying, anti-rust oil soaking and air blowing oil draining treatment; the second cleaning tank and the third cleaning tank are provided with supporting bags and dual-purpose workpieces, and the supporting height can be adjusted; through the structure composed of the supporting straight pipe and the supporting bent pipe and the design of the limiting pipe, it is guaranteed that the pump head is stably placed in the cleaning process; full automation of workpiece cleaning and transferring can be achieved, and the cleaning efficiency is improved.

The diaphragm pump comprises a pump head, the pump head is provided with a liquid inlet, a liquid outlet, a liquid inlet cavity communicating with the liquid inlet, a liquid outlet cavity communicating with the liquid outlet and an extrusion cavity communicating with the liquid inlet cavity and the liquid outlet cavity, and the diaphragm pump further comprises a rolling turbulent flow piece arranged in the liquid inlet cavity and / or the liquid outlet cavity. The rolling turbulent flow piece can roll in the liquid inlet cavity and / or the liquid outlet cavity under the impact of water flow, and turbulent flow is conducted on the water flow; the utility model further discloses a water purifier which comprises the diaphragm pump. Through the arrangement of the rolling spoiler, when water flow moving at a high speed makes contact with and collides with the rolling spoiler, kinetic energy of water flow is converted into motion kinetic energy of the rolling spoiler, so that fluid with a slow flow speed does not cause large vibration of the cavity wall when the fluid collides with the cavity wall; meanwhile, friction noise generated when the water flow flows through the cavity wall is correspondingly reduced, and an excellent water flow noise reduction effect is achieved in a high-flow-speed machine according to the technical scheme.

The invention relates to the technical field of ion chromatography detection, in particular to a high-pressure cam pump stable in conveying flow, which at least comprises a first pumping assembly, and the first pumping assembly comprises a pump head, a pump body, a plunger rod, a liquid inlet, a liquid outlet and a sealing assembly. A liquid inlet and outlet structure is improved, and a liquid outlet is formed in the tail end of a pump cavity, namely, the liquid outlet is formed in the contact position of the pump cavity and a sealing assembly, so that liquid is pumped out in a first-in first-out mode, namely, the sucked liquid is pumped out first, dissolved gas or air bubbles and the like in the liquid conveying process are removed in time, and the liquid conveying efficiency is improved. Meanwhile, the liquid outlet is formed in the position of the sealing assembly, bubbles accumulated for a long time at the position of the sealing assembly can be taken out in time when the liquid is pumped out, and after operation is carried out for a period of time, the conveying flow is stable and the precision is high; and compared with the situation of poor conveying flow precision, the improvement effect is remarkable.

The invention belongs to submersible pump machining equipment, and particularly relates to a vacuum adsorption machining clamp and submersible pump head machining equipment and method. In order to solve the problems that in the prior art, due to the fact that small chippings are accumulated in a clamping groove in the machining process, the workpiece inclines during clamping, the following scheme is provided, the device comprises a fixed disc, the top of the fixed disc is rotationally connected with a rotating base disc, and a clamping groove for containing the workpiece is formed in the top of the rotating base disc; in order to tightly adsorb the workpiece in the clamping groove, a vacuum adsorption structure is arranged in the rotating base plate, when air in the annular cavity is exhausted to conduct vacuum adsorption on the workpiece, the pressing plate can be driven to move downwards so that the pressing block can clamp the workpiece in the vertical direction, in addition, the baffles can be controlled to be close to each other to form a circular ring, and therefore the clamping efficiency is improved. And a gap between the workpiece and the clamping groove is shielded.

The invention relates to the field of medical instruments, in particular to an extracorporeal membrane oxygenation device with mechanical protection, which comprises a main device and a consumable component, one side of the main device is provided with a connecting piece and a pump head driving seat, and the top of the main device is provided with a protection frame; the consumable assembly is detachably installed on the connecting piece, the consumable assembly is provided with a pump head connected with the pump head driving base, and the protection frame is suitable for forming external protection on the consumable assembly installed on the connecting piece. The oxygenator and the pump head are integrated on the consumable assembly and then installed on the connecting piece of the main equipment in a buckled and matched mode, a mechanical protection frame is formed for the consumable assembly based on the protection frame on the main equipment, the consumable assembly is not prone to being collided by machines in the transferring process, and the transferring safety is improved. The extracorporeal membrane oxygenation device is small in size, light in weight, convenient to operate, very convenient to transfer, and suitable for forming the portable and integrated extracorporeal membrane oxygenation device with mechanical protection, and the extracorporeal membrane oxygenation device is used for being transferred between long-distance hospitals.

The invention discloses a self-suction type magnetic suspension pumping device which comprises a magnetic suspension pump, a self-suction pump and a controller, the magnetic suspension pump comprises a pump head and a magnetic suspension motor, the pump head is provided with a first inlet and a first outlet, the self-suction pump is provided with a second inlet and a second outlet, and the second inlet of the self-suction pump is connected with the first outlet of the magnetic suspension pump in series; the controller is configured to control the working states of the magnetic suspension pump and the self-priming pump, and the self-priming pump is configured to suck a medium in a pump head of the magnetic suspension pump to form negative pressure, so that to-be-conveyed fluid enters the pump head through the first inlet, and the magnetic suspension pump completes self-priming; after the magnetic suspension pump completes self-absorption, the output fluid is subjected to follow flow through the follow flow bypass; or after the magnetic suspension pump completes self-priming, the output fluid flows through the straight-through flow channel of the self-priming pump. According to the invention, the self-absorption function of the magnetic suspension pump is realized on the premise of not influencing the original performance of the magnetic suspension pump and not introducing particulate matter pollution or increasing shear force in the ultra-clean environment application of biological medicine or semiconductor manufacturing and the like.

A downhole pumping system for subsea use is provided. The pumping system is designed such that all fluid conduits and electrical signal conduits are internalized within the pumping assembly. This design provides a substantially constant and elongated profile for the pumping assembly. The pumping assembly includes a housing containing the power assembly, a power actuator assembly operably linked to the production fluid assembly, and a central bore extending through the pumping assembly to provide fluid communication between the power assembly and a first end of the pumping assembly. The pumping system also includes a flow distributor / connector at the first end or the pump head for providing fluid communication between the pump head and a delivery system extending from the surface to the pumping system. The communicating fluids include a high pressure power hydraulic fluid, a low pressure discharge hydraulic fluid, and a pressurized production wellbore fluid.

The pump head with the filter screen blocking early warning structure comprises a pump head body and a filter screen, a mounting hole is formed in one side of a water outlet of the pump head, a mounting cylinder is arranged at the position, corresponding to the mounting hole, of the outer surface of the water outlet of the pump head, the inner diameter of the mounting cylinder is larger than the diameter of the mounting hole, and a sealing assembly is arranged in the mounting cylinder; a cap is detachably mounted at one end of the mounting cylinder, an elastic part is arranged between the sealing assembly and the cap, a pressure sensor is arranged on the cap, a buzzer is arranged outside the mounting cylinder, and the pressure sensor is in control connection with the buzzer; in an initial state, the sealing assembly seals the mounting hole; and when the pressure in the water outlet of the pump head rises and exceeds a set value, the sealing assembly is far away from the mounting hole and triggers the pressure sensor. Whether the filter screen is blocked or not is judged by monitoring the pressure change of the water outlet, an alarm sound is given out through the buzzer for early warning when blockage occurs, and the problem that the applicability of the filter screen is affected due to the fact that an early warning mechanism is not sensitive or accurate enough under different working conditions is solved.

The utility model discloses a pump head damping structure which comprises a shell, a suction cavity, a compression cavity, a discharge cavity and an energy storage cavity are formed in the shell, the suction cavity is sequentially communicated with the energy storage cavity through the compression cavity and the discharge cavity, a water inlet pipe opening and a water outlet pipe opening are formed in the shell, and a water outlet pipe opening is formed in the shell. A water inlet pipe opening is formed in the shell, a water outlet pipe opening is formed in the shell, the water inlet pipe opening is communicated with the suction cavity, the water outlet pipe opening is communicated with the energy storage cavity, a vibration reduction cavity is further formed in the shell, an elastic vibration damping piece is arranged between the vibration reduction cavity and the energy storage cavity, the elastic vibration damping piece is connected with the vibration reduction cavity in a sealed mode, and the elastic vibration damping piece is connected with the energy storage cavity in a sealed mode. The damping structure can solve the problem that the damping effect is reduced after the damping structure works for a long time.

A pressing pump head with a drip-proof function structurally comprises a pressing pump head body, a liquid drawing pipe, a pressing head and a drip-proof casing pipe, when the pressing pump head is used, the drip-proof casing pipe is connected to the outer wall of a liquid outlet pipe of the pressing head in a sleeving mode, it is ensured that the liquid outlet pipe completely extends into a sleeving pipe, then a hose clamp hoop or a nut is screwed up for fixing, and in the installation process, the pressing pump head is fixed through the hose clamp hoop or the nut. When the pressing head is pressed down, liquid is sucked into the liquid outlet pipe from the liquid suction pipe, directly flows into the spiral flow guide pipe from a liquid outlet of the liquid outlet pipe and is guided into the leakage-proof pipe through the spiral flow guide pipe, and the hard film in the leakage-proof pipe is opened under the action of internal pressure, so that the liquid flows out and is rapidly closed. And residual liquid in the leakage-proof pipe can return to the spiral flow guide pipe from the plurality of backflow grooves to be used for the next time.

The utility model discloses a pumping system capable of realizing mechanical seal leakage monitoring, which comprises a motor (1), a vertical pump body (2) and a pump head (3), the outlet end of the pump head (3) is connected with a liquid outlet pipeline (4), and the pumping system is characterized in that the outlet end of the liquid outlet pipeline (4) is connected with the inlet end of a check valve (5), a first mechanical seal (6) is arranged at the joint of the vertical pump body (2) and the pump head (3), and a second mechanical seal (7) is arranged at the outlet end of the check valve (5). An impeller is arranged in the pump head (3), a second mechanical seal (7) is arranged on the upper portion of a hub of the impeller, a monitoring pipeline (23) is arranged in the vertical pump body (2), the height of a bottom opening of the monitoring pipeline (23) is between the height of the first mechanical seal (6) and the height of the second mechanical seal (7), and the height of a top opening of the monitoring pipeline (23) is larger than that of the first mechanical seal (6).

The invention discloses a pump head airtightness detection system based on an intelligent sensor, and belongs to the technical field of airtightness detection. The system specifically comprises the following steps that S1, a historical data acquisition module acquires pump head air tightness detection multi-source historical sample data and transmits the pump head air tightness detection multi-source historical sample data to a data preprocessing module; and S2, the data preprocessing module preprocesses the obtained multi-source historical sample data, and performs physical noise reduction and calibration on the multi-source historical sample data. Three types of multi-source data of acoustics, pressure and thermotics are collected, normal parts, leakage parts, vibration, temperature change and other interference working conditions are covered, all-directional description of the air tightness state of the pump head is achieved, limitation of a single data dimension is avoided, and a special optimization method is adopted for different types of data. The environmental noise is effectively filtered; the pressure data is subjected to curved surface fitting through Kriging interpolation, and abnormal values introduced by fluctuation of the sensor are eliminated.

The invention discloses a sampling machine for mineral water pretreatment water quality detection, and relates to the technical field of mineral water pretreatment water quality detection.The sampling machine comprises a water quality sampler, the outer wall of the water quality sampler is electrically connected with a switch, the front end of the upper side of the switch is slidably connected with a pump head, and the inner wall of the pump head is rotatably connected with an adjusting handle; a silica gel tube is clamped at a gap of the pump head, a sampling countersunk head is fixedly mounted at one end, far away from the pump head, of the silica gel tube, a stirring mechanism is arranged on the outer wall of the bottom end of the sampling countersunk head, a filtering mechanism is arranged at the bottom end of the silica gel tube, and a first gear and a second gear are matched with stirring blades. Pollutants which are not uniformly distributed in a water sample can be uniformly mixed by the stirring mechanism, so that the representativeness and the accuracy of sampling are improved, meanwhile, some pollutants can not be easily dissolved in water, and the stirring mechanism can help the pollutants to be better dissolved in the water, so that the water quality can be more accurately measured.

The utility model discloses a novel pressing pump head which comprises a pump head body, a connecting cover and a gland, the connecting cover is of a disc-shaped structure, the pump head body is fixed to the axis position in the connecting cover, the gland is fixed to the top position of the pump head body, a first liquid outlet channel is formed in the axis position of the gland in the peripheral direction, and a second liquid outlet channel is formed in the periphery of the gland. An extension pipe is inserted into the first liquid outlet channel, a liquid outlet is formed in the position, close to the end, of the extension pipe and located in the bottom of the extension pipe, the extension pipe is inserted through the first liquid outlet channel, the liquid outlet is located in the downward position of the extension pipe, and the situation that pressing force is too large easily can be avoided; in this way, the liquid spraying device is simple in structure.

The invention relates to the field of pumps, in particular to a high-temperature type vertical multi-stage centrifugal pump which comprises a base, a water section component connected to the base, an outer sleeve connected to the water section component, a cooling shell fixed to the upper end of the outer sleeve, a heat insulation plate fixed to the upper end of the cooling shell, and a pump head fixed to the upper end of the heat insulation plate. The upper end of the pump head is connected with a support and a protective cover, a motor is fixed to the upper ends of the support and the protective cover, an output shaft of the motor is connected with a coupler, the coupler is connected with a pump shaft, the pump shaft penetrates through the pump head and the center of the heat insulation plate, and an inner core component is fixed to the lower end of the pump shaft. The pump shaft comprises an upper pump shaft part, a lower pump shaft part and a U-shaped part connected with the upper pump shaft part and the lower pump shaft part, a cavity in which the U-shaped part rotates is formed in the heat insulation plate, and a sponge block is fixed to the concave position of the U-shaped part, so that the cooling effect on the pump shaft is greatly improved, medium steam in the pump cavity is prevented from ascending through a gap at the junction of the pump shaft and the heat insulation plate, and the heat insulation effect is improved. Therefore, the motor and the like are well protected.

The invention belongs to the technical field of water pumps, and particularly relates to a transverse water pump, which comprises a driving motor, an impeller and a water pump, the pump head is provided with a low-pressure cavity, a mixing cavity and a high-pressure cavity which are arranged in the axial direction of the driving motor, the low-pressure cavity is connected with a water inlet pipe, the high-pressure cavity is connected with a water outlet pipe, the impeller is arranged in the mixing cavity, and a first water passing opening is formed between the mixing cavity and the low-pressure cavity; a second water passing opening is formed between the mixing cavity and the high-pressure cavity; and the pressure stabilizing unit is connected with the high-pressure cavity and is used for stabilizing the pressure in the high-pressure cavity. The low-pressure cavity, the mixing cavity and the high-pressure cavity are arranged in the axial direction of the driving motor, water flow is driven through the impeller, the whole water pump tends to be transversely arranged, and the overall size of the water pump is effectively reduced; and meanwhile, the impeller is adopted to drive water flow, so that the water pump has self-suction capacity and is more flexible to use.