1734 results about "Diaphragm pump" patented technology

In order to improve the stability and reliability of the micro diaphragm pump, the invention provides the micro diaphragm pump with the columnar bubble and liquid monitoring function. The channel is formed in the pump cavity, the valve body is installed in the channel, the valve body is composed of the upper layer, the middle layer and the friction layer, the sensing part is arranged on the middle layer, the sensing area is formed through cooperation of the friction layer and the sensing part, and then columnar bubbles and liquid in the micro diaphragm pump are monitored. The device is small in size, high in energy density, high in controllability and capable of monitoring columnar bubbles and liquid.

The invention provides a glue solution filtering and impurity removing method and device for carbon fiber composite material processing, and belongs to the technical field of carbon fiber composite material production.The method comprises the steps that when a carbon fiber composite material infiltrates resin in a glue tank, overflowing resin is guided out through an overflowing opening, and the overflowing resin flows into a glue barrel after being filtered through a first filter screen; glue extrusion is carried out after infiltration is completed, and resin is filtered and refluxed through a second filter screen based on a flow guide opening of a backflow plate and collected into a glue barrel; glue liquid in the glue barrel is circularly pumped into the glue groove through the diaphragm pump; and according to the tracking result of the wool yarn hairiness and the monitoring result of the resin flow of the filter screen, scheduling a worker to clean the filter screen. According to the glue solution filtering and impurity removing method and device for carbon fiber composite material processing, circulation of the glue solution in the glue tank is controlled through the diaphragm pump, and the resin utilization efficiency is improved. The filter screen is used for filtering the wool yarn hairiness of the circulating colloid, and cleaning early warning is carried out based on the tracking result and the monitoring result of the wool yarn hairiness, so that the starting time is shortened, and the production efficiency is improved.

Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater element. Improvements are also disclosed in an application of negative pressure during a drain phase in peritoneal dialysis therapy, and to control an amount of intraperitoneal fluid accumulation during the therapy. Improvements in efficiency are also disclosed in movement of fluid into and out of a two-pump cassette and a heater bag of the peritoneal dialysis cycler, and in synchronization of operation of two or more pumps in the peritoneal dialysis cycler or other fluid handling devices using a multi-pump arrangement.

The invention discloses a preparation device and a preparation method of electronic-grade sulfuric acid. The device mainly comprises a sulfuric acid storage tank, a wiped-film evaporator, a liquid storage tank, a sulfur trioxide absorption tank, a packing absorption tower, a heat exchanger, a filter and the like. A fuming sulfuric acid storage tank is conveyed to a wiped-film evaporator through a diaphragm pump to evaporate sulfur trioxide, the evaporated sulfur trioxide is subjected to circular absorption reaction to generate sulfuric acid, and electronic-grade sulfuric acid is obtained after filtration. The method is simple in technological process, low in evaporation process temperature, high in efficiency and low in metal residue, and high-quality electronic-grade sulfuric acid is obtained.

The diaphragm pump includes a pump casing, a crank mechanism attached to the pump casing, and a diaphragm assembly connected to the crank mechanism. The diaphragm assembly has a diaphragm and a center plate retaining an inner peripheral portion of the diaphragm. The center plate has a first retaining member having a fitting recess, and a second retaining member having a fitting projection press-fitted into the fitting recess. The center plate clamps an inner peripheral portion of the diaphragm between the first retaining member and the second retaining member. A screw for securing the center plate is installed through insertion holes extending through the fitting recess and the fitting projection, respectively. The inner diameter of the fitting recess and the outer diameter of the fitting projection are larger than the insertion holes.

The multi-component condensation, adsorption and catalytic oxidation device comprises a condensation, adsorption and catalytic oxidation device body, and the condensation, adsorption and catalytic oxidation device body is composed of a catalytic combustion furnace, a catalytic fan, a buffer, a carbon tank, a waste gas fan, a condenser and a heat exchanger which are arranged in a machine shell; a functional mechanism is arranged outside the catalytic combustion furnace, and a cleaning structure for cleaning the filter plate is arranged on the filter cartridge. And a second synchronous structure is arranged between the rotating shaft and the rotating fan. The device has a three-stage condensation link for recovering and treating volatile organic compounds, a knocking plate and a piston pump are respectively driven to work through a second synchronous structure, a diaphragm pump is used for pumping water, and water mist sprayed by a spray head adsorbs impurities in flue gas and precipitates at the bottom of a filter cartridge; the filtered flue gas enters the volatile organic matter equipment to be treated, and the knocking plate can knock the filter plate when moving up and down in a reciprocating manner, so that the filter plate is prevented from being blocked.

The invention relates to the technical field of motor control, and provides a control method, system and device of a brushless direct current motor for a diaphragm pump, and the method comprises the steps: obtaining a plurality of first weight coefficients of different dimensions of diaphragm pump features and corresponding first compatibility scores; obtaining second weight coefficients of the brushless direct current motor characteristics of multiple different dimensions and corresponding second compatibility scores; acquiring system compatibility according to the first weight coefficient, the first compatibility score, the second weight coefficient and the second compatibility score; based on the system compatibility, the control strategy is dynamically adjusted, and the brushless direct current motor for the diaphragm pump is controlled. According to the method, the multi-dimensional characteristic elements of the diaphragm pump and the brushless direct current motor are comprehensively considered, the control strategy can be dynamically adjusted and optimized based on the system compatibility, the brushless direct current motor control is well matched with the system, and therefore the control reliability of the brushless direct current motor for the diaphragm pump is improved.

The invention discloses an underwater multi-mode mobile robot equipped with a flexible bionic gripper, which integrates three operation modes of propeller propulsion, six-foot crawling and target object grabbing, and realizes'movement-attachment-operation 'integrated collaboration. The robot main body adopts a five-thruster vector layout and has a five-degree-of-freedom motion capability; and six groups of three-degree-of-freedom mechanical feet and two groups of three-degree-of-freedom mechanical arms are arranged outside, and a cruising mode, a crawling mode or a grabbing mode can be automatically switched according to tasks. A coordination dual-network hydrogel bionic sucker and a flexible gripper are integrated at the foot end and the arm end, and controllable adsorption and desorption are achieved through a diaphragm pump. The control system generates a rhythm signal based on the central mode generator, and coordinates multi-module actions of paddles, legs and arms in combination with inverse kinematics solution. The robot is suitable for tasks such as wide water area cruising, complex terrain exploration, environment maintenance and seabed sampling, has high maneuverability and high integration degree, and provides an innovative platform for underwater fine operation.

The invention relates to the technical field of wave power generation, in particular to a wave power generation method which is realized based on a floater and a water storage tank. A diaphragm pump is arranged in the floater and comprises a top plate, a bottom plate and a flexible wall body capable of generating deformation, the top plate, the bottom plate and the flexible wall body jointly define a cavity, a water inlet pipe and a water outlet pipe which are provided with one-way valves are arranged on the top plate, and the bottom plate is connected with a damping disc through a connecting piece; a water storage cavity, a water-turbine generator set located on the lower portion of the water storage cavity and an energy storage battery connected with the water-turbine generator set are arranged in the water storage tank. The water storage cavity communicates with the water outlet pipe; the floater moves up and down along with waves to drive the flexible wall body to deform and drive the volume of the cavity of the diaphragm pump to change, seawater is sucked into the cavity of the diaphragm pump or the seawater in the cavity is pumped into the water storage cavity, the water-turbine generator set is driven to generate electricity, and electric energy is stored in the energy storage battery. Through the power generation method, the problems of high cost and short service life can be effectively solved.

The application discloses a high-pressure diaphragm pump one-way valve structure multi-objective optimization method based on digital twinning, and belongs to the technical field of pump valve optimization design; the application collects geometric size parameters and material properties of a high-pressure diaphragm pump one-way valve, and establishes a simulation model; an Isight and ANSYS joint simulation method is used to generate sample points and calculate response values; an agent model is constructed according to response values of each group of sample points, calculation efficiency is improved, and a digital twinning model is constructed; a one-way valve structure multi-objective optimization model is established by taking the maximum equivalent stress of a valve core and the minimum maximum flow velocity of a valve gap flow field as objective functions, a genetic algorithm is used for solving, the best structure parameter combination of the one-way valve impact resistance performance is obtained, and finally, result verification is carried out; the application can realize high-precision simulation of a one-way valve operating state and solving of optimal structure parameters of impact resistance performance, thereby guiding one-way valve structure design, reducing product research and development time cost, and improving service life.

A cell fluid dispensing method. The dispensing method is applied to a cell fluid dispensing system, and the cell fluid dispensing system comprises a peristaltic pump, package bags (20), a calibration container (10) and a diaphragm pump which are connected in sequence in the extending direction of a same dispensing pipeline. The dispensing method comprises: first pumping a cell fluid into the package bags (20), then discharging gas mixed into the cell fluid and gas originally remaining in the package bags (20) out of the package bags (20) by means of withdrawing, and transferring same to the dispensing pipeline, and then discharging the residual gas mixed in the dispensing pipeline by means of the calibration container (10) and the diaphragm pump on the dispensing pipeline to obtain a gas-liquid separated cell fluid, and finally pumping the gas-liquid separated cell fluid into the package bags (20) again, thereby obtaining dispensed products without residual bubbles, improving the dispensing quality.

The present application provides an oil-gas separation apparatus capable of implementing complete degassing and methods. The apparatus comprises: a piston cylinder and a degassing cylinder, a degassing solenoid valve being arranged between the degassing cylinder and the piston cylinder, one end of the degassing solenoid valve extending into the interior of the piston cylinder, and the other end thereof being in communication with the degassing cylinder; a variable speed diaphragm pump, an air intake end thereof being in communication with the atmosphere and an air discharge end thereof being in communication with the degassing cylinder for drawing ambient air, and used for cleaning a gas path of the oil-gas separation apparatus, and providing power for the degassing cylinder, thereby replacing a design involving a carrier gas cylinder or a gas generator; and a main control module. According to the present application, the piston cylinder, the degassing cylinder, the degassing solenoid valve, and the variable speed diaphragm pump are integrated and are uniformly controlled by the main control module, so that high-efficiency oil and gas separation is implemented. A unique degassing control method and a concentration calculation method are designed, so that fast and efficient degassing is implemented, nearly complete degassing is achieved without correcting a degassing rate, a mathematical model for inverse calculation of an oil sample concentration on the basis of a gas concentration is simplified, and concentration conversion is convenient.

A novel ball valve on a diaphragm pump comprises a ball seat, a ball cage and a valve ball. The ball cage comprises a positioning ring, a supporting column, a connecting ring and a limiting ring. The four supporting columns are annularly arranged at intervals. The positioning ring, the supporting column, the connecting ring and the limiting ring are integrally formed. The end, away from the positioning ring, of the supporting column and the side, facing the valve ball, of the supporting column are provided with an inclined face part, the inclined face of the inclined face part faces the valve ball, and the spherical face of the valve ball abuts against the four inclined face parts. According to the novel ball valve on the diaphragm pump, a one-way channel of the valve ball is formed through the four supporting columns which are annularly arranged at intervals, and the maximum flow of a fluid medium can be guaranteed while movement of the valve ball is limited. And during assembly, the ball cage of the corresponding model can be selected according to the flow performance required by the pump, so that the simple and low-cost matching of the overall flow characteristic of the pump can be realized, and the main structure of the pump body or the ball valve does not need to be changed.

The invention relates to a high negative pressure diaphragm pump adjusting mechanism, which relates to the technical field of high negative pressure diaphragm pumps, and comprises a shell, a motor, a connecting rod assembly, a diaphragm, a first cover body, a second cover body, an inlet pipe, an outlet pipe and an adjusting mechanism. The adjusting mechanism is installed on the connecting rod assembly of the diaphragm pump, the threads are arranged at the two ends of the adjusting mechanism, accurate adjustment of the internal space of the diaphragm pump is achieved by manually rotating the adjusting mechanism and utilizing the screw pitch difference of the two ends, the clearance volume between the diaphragm and the valve plate is reduced under the condition that the diaphragm pump is not disassembled, and therefore the negative pressure is improved. According to the design of the screw pitch difference, the adjusting amount is equal to the difference value of the screw pitches at the two ends every time the diaphragm pump rotates by one circle, and therefore high-precision fine adjustment of the internal space of the diaphragm pump is achieved, and the effects that traditional negative pressure adjustment is achieved, the convenience of negative pressure adjustment is improved through a gasket mode, and performance reduction caused by gasket abrasion is avoided are achieved.

A diaphragm pump, which comprises a pump body which defines internally at least one pair of pumping chambers which are connected, at the inlet, to at least one suction connector and, at the outlet, to at least one delivery connector of the pump; pumping chambers are delimited by respective diaphragms, which separate the pumping chambers from actuation chambers, which can be connected, alternately, to a source of compressed air; in the pump body an access opening to the pilot chamber is defined which is closeable by means of a closure element; the closure element comprises a main body made by molding and of plastic material and at least one plate-like element made of a material having, with respect to the sliding pad, a higher resistance to wear and a lower coefficient of friction than the plastic material.

Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater element. Improvements are also disclosed in an application of negative pressure during a drain phase in peritoneal dialysis therapy, and to control an amount of intraperitoneal fluid accumulation during the therapy. Improvements in efficiency are also disclosed in movement of fluid into and out of a two-pump cassette and a heater bag of the peritoneal dialysis cycler, and in synchronization of operation of two or more pumps in the peritoneal dialysis cycler or other fluid handling devices using a multi-pump arrangement.

Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater element. Improvements are also disclosed in an application of negative pressure during a drain phase in peritoneal dialysis therapy, and to control an amount of intraperitoneal fluid accumulation during the therapy. Improvements in efficiency are also disclosed in movement of fluid into and out of a two-pump cassette and a heater bag of the peritoneal dialysis cycler, and in synchronization of operation of two or more pumps in the peritoneal dialysis cycler or other fluid handling devices using a multi-pump arrangement.

The invention relates to the technical field of diaphragm pumps, and discloses a system for testing a diaphragm pump. The system comprises a gas-liquid supply pipeline, a parameter detection module and a test module, the gas-liquid supply pipeline comprises a gas inlet branch and a liquid inlet branch, and is used for converging gas introduced from the gas inlet branch and liquid introduced from the liquid inlet branch and conveying the converged gas and liquid to the diaphragm pump to be tested; the parameter detection module is used for detecting flow information of the gas inlet branch and the liquid inlet branch so as to obtain corresponding flow detection parameters; and the test module is used for carrying out flow configuration on the air inlet branch and / or the liquid inlet branch and carrying out on-load performance test on the diaphragm pump to be tested according to flow detection parameters detected after the flow configuration. According to the embodiment of the invention, the flow of the mixed gas and liquid can be accurately measured, so that the loading performance of the gas-liquid mixing diaphragm pump can be verified.

The utility model discloses a salt lake lithium extraction adsorbent scrubbing system which comprises a scrubbing tower and an adsorption tower, and a sunken water distributor is arranged at the bottom end in the scrubbing tower; the middle position of the bottom of the concave water distributor penetrates through the bottom of the scrubbing tower and is connected with a runner opening; a water replenishing opening is formed in the middle of the bottom of the scrubbing tower; two feed ports are formed in the positions, close to the water inlet, of one side of the scrubbing tower, and a water outlet is formed in the position, close to the top, of one side of the scrubbing tower; the flow channel port is sequentially connected with a pneumatic valve j, a diaphragm pump B and an adsorption column through a pipeline; according to the system, crushed resin particles and impurities are effectively removed by cleaning an adsorbent, so that the adsorption performance and the flowability of a resin bed layer are recovered, and it is ensured that the resin bed layer is always in the optimal working state. In the process of scrubbing the adsorbent, the adsorbent does not need to be manually carried except for necessary adsorption tower pipeline connection operation, so that the scrubbing efficiency is remarkably 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 utility model discloses an improved water stop diaphragm water pump. The improved water stop diaphragm water pump comprises a connecting part, a first water stop valve body, a second water stop valve body and a pumping assembly which are fixedly connected in sequence, a water stop cavity is formed between the first water stop valve body and the connecting part, a water stop seat is arranged in the water stop cavity, the interior of the water stop seat is a communicating cavity communicating with the valve plate cavity, and a water stop diaphragm is arranged in the water stop cavity; the first water stop valve body is provided with a water stop channel and an exhaust channel which are communicated with the water inlet connector and the balance cavity. When the water level rises, the water inlet connector is communicated with the balance cavity through the water stop channel, the water pressure of the balance cavity rises, and therefore water leakage of the water stop base is avoided. Bubbles are discharged by arranging the exhaust channel, so that the pressure of the water stop valve plate on the water stop seat is conveniently increased; and the liquid can directly enter the water stop cavity through the water stop diaphragm via the communicating cavity, so that the pumping flow rate of the liquid can be increased.

The present invention relates to the technical field of mechanical pumps, and in particular to a liquid variable displacement mechanical pump. A liquid variable displacement mechanical pump comprises a pump body, a diaphragm, an adjusting mechanism and a driving mechanism. A first installation cavity is provided on the pump body, and a heat insulation board is provided in the first installation cavity. The heat insulation board and the diaphragm define the first installation cavity into a liquid flow cavity, an adjusting cavity and a cooling cavity. External liquid passes through the liquid flow cavity, and a regulating liquid is provided in the adjusting cavity, and a cooling liquid is provided in the cooling cavity. Through the arranged adjusting mechanism, flowing external liquid is introduced into the liquid flow cavity, and the regulating liquid in the regulating cavity receives the heat transferred by the external liquid through the heat insulation board. Part of the cooling liquid enters the interior of the bellows, and the cooling liquid in the bellows cools the regulating liquid in the regulating cavity, thereby preventing the diaphragm from being damaged after being heated. The present invention provides a liquid variable displacement mechanical pump to solve the problem that the existing piston diaphragm pump may damage the diaphragm when conveying high-temperature liquid.

This invention relates to a sampling device and method for sulfur hexafluoride (SF6) and its mixed gases used in electrical equipment. The sampling device includes an equipment connection module, a sampling module, a gas filling module, and a vacuuming module. The equipment connection module, used to connect the electrical equipment and the gas sampler, consists of an equipment connection valve, a diaphragm pump, and corresponding pipelines. The sampling module, used for gas buffering, consists of a sampling cylinder, a pressure detection unit, a sampling valve, a gas filling valve, a tail gas valve, and corresponding pipelines. The gas filling module, used to fill the sampling container, consists of a booster pump, a sampling container connection valve, and corresponding pipelines. The vacuuming module, used for vacuuming and tail gas collection, consists of a vacuum pump, a tail gas collection device, and its connection valves. The sampling method utilizes appropriate flushing and vacuuming methods when the gas pressure is higher or lower than 0.2 MPa. This sampling device and method can improve the accuracy of sampling sulfur hexafluoride gas or sulfur hexafluoride mixed insulating gases.

The invention provides a CIP self-cleaning cooperative control system and method for a chemical diaphragm pump, and relates to the technical field of diaphragm pump cleaning control, and the system comprises a parameter obtaining module which is used for obtaining an operation parameter sequence and a residue concentration sequence; the dynamic residue traceability analysis module is used for judging whether a self-cleaning process is triggered or not according to the dynamic residue traceability analysis result, and if yes, a preset cleaning process template is called; the cleaning process optimization module is used for optimizing a preset cleaning process template in combination with the dynamic residue traceability analysis result to obtain an optimized cleaning process; and the self-cleaning module is used for executing an optimized cleaning process through the embedded control unit and carrying out self-cleaning on the chemical diaphragm pump. By means of the chemical diaphragm pump cleaning method and device, the technical problem that in the prior art, cleaning efficiency is low due to the fact that cleaning control depends on a fixed period and deep analysis on a pollution mechanism is lacked can be solved, the cleaning process is optimized through dynamic traceability analysis, and the cleaning efficiency of the chemical diaphragm pump is improved.

The invention discloses a planetary structure type flexible gear ring diaphragm pump, and belongs to the technical field of pumps, the planetary structure type flexible gear ring diaphragm pump comprises a pump body, a motor assembly is arranged in the pump body, an output shaft of the motor assembly is connected with a sun gear, a plurality of planetary gears are rotatably connected in the pump body, a flexible gear ring is arranged in the pump body, and the planetary gears are meshed and matched with the sun gear and the flexible gear ring. A fluid chamber seat is fixed at the end part of the pump body, a three-dimensional diaphragm is fixed in the fluid chamber seat, a plurality of flexible diaphragm chambers are arranged in the three-dimensional diaphragm along the outer circumferential direction of the flexible gear ring, and one-way valve groups are arranged on the flexible diaphragm chambers; planetary transmission and the positive displacement pump principle are combined, controllable deformation of a flexible component is used for replacing a traditional rigid connecting rod or eccentric wheel mechanism, and a brand-new internally-balanced driving mode is provided for fluid conveying; compared with a traditional eccentric wheel driving diaphragm pump, stress of the planet wheels on the two sides is always in internal balance, the running stability and reliability are greatly improved, and the motor cost is optimized.

The invention relates to the technical field of raw material manufacturing, and discloses a liquid material adding control device and system.The liquid material adding control device comprises a production cylinder, a powder mechanism, an auxiliary mechanism, a liquid material mechanism and a water storage mechanism; the powder mechanism comprises a powder tank, a powder metering tank is arranged at an outlet of the powder tank, a powder spiral channel is arranged at the outlet end of the powder metering tank, and powder is conveyed into the production cylinder in a segmented mode through the powder spiral channel. The assistant mechanism comprises an assistant tank, an assistant metering tank is arranged at an outlet of the assistant tank, and an assistant pipeline is arranged at the outlet end of the assistant metering tank; the liquid material mechanism comprises a liquid material tank, and a liquid material is fed into the production cylinder through a diaphragm pump conveying pipe; a spraying mechanism is arranged at an outlet of the water storage mechanism and connected with the production cylinder and the auxiliary mechanism. The device can be suitable for conveying various materials with different properties and different viscosities, spraying is carried out only at the discharging structure of the metering tank, the material precision is guaranteed, meanwhile, the use amount of spraying water is reduced, and the generation amount of waste water is reduced.

The utility model discloses a diaphragm pump high-temperature isolator which comprises a high-temperature section pipeline, a low-temperature section pipeline is installed on the outer wall of one side of the high-temperature section pipeline, the high-temperature section pipeline is communicated with the low-temperature section pipeline, an isolator body is arranged in the low-temperature section pipeline and installed on the outer wall of a guide rod, and the high-temperature section pipeline is communicated with the low-temperature section pipeline. A first buffer pad and a second buffer pad are arranged on the two sides of the outer wall of the guide rod correspondingly, the first buffer pad is installed on the outer wall of one side of the first connecting plate, the second buffer pad is installed at one end of a spring, and the other end of the spring is installed on the end wall of one end of the installation block; and glands are mounted on the end walls of the two ends of the mounting sleeve. The service life of the rubber diaphragm which is a key part of the diaphragm pump is prolonged, the maintenance period of the diaphragm pump is prolonged, the shutdown time of the diaphragm pump due to maintenance is shortened, the cost is reduced, and the benefit is increased.

The invention relates to the technical field of diaphragm pump automatic control, in particular to a diaphragm pump self-adaptive pressure relief and stabilization control method based on pressure feedback, which comprises the following steps: configuring reference parameters before starting and detecting faults of a pressure sensor, a pump driving unit and an electromagnetic pressure relief valve; obtaining an effective pressure value through moving average filtering; dynamically adjusting PID parameters according to the pressure deviation and the change trend; and pump rotating speed adjustment, graded pressure relief or emergency shutdown are executed according to the normal area, the early warning area and the overpressure area. The method effectively improves the pressure stabilization precision and the pressure relief response flexibility, comprehensively avoids the equipment fault risk, adapts to the working conditions of multiple fields, and remarkably enhances the reliability and practicability of system operation.

The invention discloses a low-pulsation steady flow pressure system, which relates to the technical field of fluid transportation and control, and comprises a series / parallel double-pump module, a filter, a pulsation damper, a sensor and a control center, the series / parallel double-pump module, the filter, the pulsation damper and the sensor are sequentially connected in series, and the control center is connected with the filter. The control center is in circuit connection with the serial / parallel double-pump module and the sensor; the series / parallel double-pump module consists of two micro diaphragm pumps and is used for generating complementary pulsation fluid output; by arranging the series / parallel double-pump module, the filter, the pulsation damper, the sensor and the control center, the flow pulsation is remarkably reduced through the complementary effect of the double pumps, and the output stability is improved; dynamic adjustment is achieved through closed-loop feedback control of the control center, and the response speed is increased; due to the design of the compact pulsation damper, the size of the system is reduced, and integrated installation is facilitated.

The utility model discloses a sewage recycling device for a tunnel shield tunneling machine, which comprises a sewage pool, a sewage cavity is formed in the sewage pool, and the sewage cavity is used for standing of separated sewage; the clean water tank is located on one side of the sewage tank, a clean water cavity is formed in the clean water tank, a partition plate is arranged between the clean water cavity and the sewage cavity, a filter plate is arranged in the middle of the partition plate, and the clean water cavity is communicated with the sewage cavity through the filter plate; the filter press is mounted on the sewage pool through a bracket, and the output end of the filter press extends into the sewage cavity through a pipeline; the acid-resistant DN50 pneumatic diaphragm pump is mounted at the shield tail and is responsible for pumping sewage at the shield tail and pumping and discharging accumulated sludge into the filter press for solid-liquid separation, and the sludge is compressed under high-strength extrusion, so that the sludge is prevented from being loaded and transferred again, and the transportation cost of sludge blocks is reduced.