3089 results about "Metering pump" patented technology

The invention relates to the technical field of metering pumps, in particular to an external meshing gear metering pump flow calculation method based on linear regression and curve fitting, which comprises the following steps: generating an integrated data set by monitoring the flow rate, pressure, temperature and viscosity in real time, setting flow rate, pressure and temperature thresholds based on the data set, judging the flow state and recording abnormity, and calculating the flow rate of the external meshing gear metering pump. Flow velocity and viscosity are selected for flow calculation, a corrected flow value is generated, whether flow is normal or not is analyzed and determined, a flow stability evaluation result is generated, and a visual interface is created to display parameters and a calculation result. According to the method, the multiple sensors are installed at the inlet and the outlet of the metering pump, the flow speed, the pressure, the temperature and the viscosity are monitored in real time, an integrated data set provides a precise basis for flow calculation, a threshold value is set, data are monitored, it is ensured that parameters exceeding the normal range can be recorded and analyzed in time, and the process improves the accuracy of flow calculation and improves the working efficiency. And flow evaluation is optimized, and the operation safety and efficiency are improved.

A lockout system for a metering pump is provided. The lockout system can include a user interface that is used to switch the pump between a locked configuration and an unlocked configuration. In the locked configuration, the operation of the pump cannot be adjusted through the user interface. In the unlocked configuration, the operation of the pump can be adjusted through the user interface. The lockout system can include a passkey notice that provides information regarding how to use the user interface to switch the pump between the locked and unlocked configurations.

The invention discloses an intelligent detection and dynamic supplement regulation and control system for electroplating bath solution components, and belongs to the technical field of electroplating. The system comprises an electroplating bath body, a detection module, a data processing and control module and a regulation and control module. The detection module is used for detecting the metal ion concentration, the pH value, the temperature and the additive concentration of the bath solution on line in real time through a spectrum sensor, an electrochemical sensor and a physical parameter sensor; the data processing and control module adopts a PID and machine learning fused intelligent regulation and control model, predicts the component change trend according to the detection data and the process parameters, and generates a dynamic regulation and control instruction; the regulation and control module quantitatively supplements target components through a high-precision metering pump, and the closed-loop feedback correction module is combined to ensure that the components of the bath solution are stabilized within a preset threshold range. Multi-parameter synchronous detection and accurate regulation and control are achieved, the quality stability of the plating layer is improved, raw material consumption and labor cost are reduced, and the method can be widely applied to industrial scenes such as metal surface treatment.

The invention discloses a deep sea underwater integrated electro-hydraulic actuator system adopting pump and valve combination. The deep sea underwater integrated electro-hydraulic actuator system comprises a hydraulic cylinder, a pump control assembly and a valve control assembly. The pump control assembly comprises a metering pump, a first switch valve and a second switch valve; the valve control assembly comprises a large-flow proportional valve, a small-flow proportional valve, a deep sea compensation energy accumulator and a third switch valve. The metering pump, the first switch valve and a rod cavity of the hydraulic cylinder are sequentially connected through a pipeline, the metering pump, the second switch valve and a rodless cavity of the hydraulic cylinder are sequentially connected through a pipeline, the metering pump, the third switch valve and the deep sea compensation energy accumulator are sequentially connected through a pipeline, and the rodless cavity of the hydraulic cylinder is connected with the large-flow proportional valve and the small-flow proportional valve through pipelines. Two control modes of the actuator can be completed, large-flow control is achieved through the pump control assembly, high efficiency and energy conservation are achieved, flow needed by maintenance is supplied to a rodless cavity of the actuator through the valve control assembly via the large-flow proportional valve and the small-flow proportional valve, and posture keeping and emergency action are achieved.

The invention discloses a silent electromagnetic plunger metering pump which comprises a pump body, a plunger assembly and an electromagnetic control device. The electromagnetic control device fixes the positioning ring in the first mounting groove, the electromagnetic control device comprises a movable iron core, a fixed iron core and an elastic piece, the movable iron core is connected to the buffer heat insulation ring, an annular placement groove is formed in the end, close to the movable iron core, of the fixed iron core, and a buffer gasket protruding out of the annular placement groove is arranged in the annular placement groove; the elastic piece is arranged on the periphery of the buffering heat insulation ring, and the two ends of the elastic piece abut against the end, close to the plunger moving groove, of the buffering heat insulation ring and the end, close to the positioning ring, of the electromagnetic control device respectively. The arrangement of the annular placement groove can avoid excessive reduction of the area of magnetic flux, the buffer gasket plays a role in buffering and vibration absorption when the movable iron core and the fixed iron core work, noise can be reduced, the position of the elastic piece is separated from the position between the fixed iron core and the movable iron core, it can be ensured that the magnetic force between the fixed iron core and the movable iron core meets the requirement for overall normal operation, and the structural design is ingenious.

The invention relates to the technical field of biochemical engineering and food processing, in particular to a fish collagen extraction process which comprises the following steps: S100, raw material pretreatment; s200, carrying out crushing and enzymolysis pretreatment; s300, carrying out an enzymatic hydrolysis reaction; s400, carrying out solid-liquid separation; s500, carrying out concentration treatment; and S600, drying treatment is carried out. The advanced spectrum analyzer is used for accurately determining the freshness of the fish body, the automatic cutting and ultrasonic cleaning technologies are combined, the quality of raw materials is effectively guaranteed, the enzymolysis reaction conditions are strictly controlled through the high-precision metering pump and the heat exchange system, the enzymolysis efficiency and the product quality are improved, and the production cost is reduced. By adopting a multi-layer composite membrane structure and a specific concentration technology, the efficiency and purity of solid-liquid separation and concentration treatment are remarkably improved, the production process is optimized, the energy consumption and the cost are reduced, pollutants in the production process are effectively removed through application of a plasma cleaning and air purification system, and the product quality is improved. And reliable guarantee is provided for production of high-quality fish collagen products.

The invention relates to the technical field of engineering machinery, and particularly discloses an electrically-driven metering pump load-sensitive system, a control method and engineering machinery, the electrically-driven metering pump load-sensitive system comprises a control unit, a driving motor assembly, a metering pump, a pilot hydraulic control unit, a pilot handle assembly, a load-sensitive valve assembly, an actuator assembly, a sensor assembly and a pressure difference control module; the driving motor drives the metering pump to supply oil to the load-sensitive valve assembly so as to drive the actuator assembly to operate; the control unit receives the maximum outlet pressure and the maximum load pressure of the pump collected by the pressure sensor, receives a system target pressure difference signal of the pressure difference control module at the same time, and synchronously controls the rotating speed of the motor and the valve target pressure difference output by the proportional pressure reducing valve. The system aims to solve the problems that a traditional upstream compensation load sensitive system lacks a flow saturation resisting function, and a downstream compensation load sensitive system has extra reversing energy consumption and fixed system pressure difference setting.

The invention discloses a polyester ITY yarn and a production method thereof. The method comprises the following steps: extruding a polyester melt from a spinning assembly under the control of two groups of metering pump frequency converters, cooling to obtain polyester monofilaments, oiling part of the polyester monofilaments through an oil nozzle, drawing and shaping through GR0 and a hot roller box to prepare FDY (Fully Drawn Yarn), and oiling the other part of the polyester monofilaments to prepare POY (Polyester Pre-Oriented Yarn); fDY (fully drawn yarn) is mixed with POY (pre-oriented yarn) in a pre-interlacing device through GR1 for pre-interlacing, then enters a main interlacing device through GR2 for main interlacing, and finally enters a winding machine through GR3 for winding to obtain ITY; before entering the pre-interlacing device, the tension of the FDY is 10-14 cN, the tension of the POY is 12-16 cN, the tension of the FDY is smaller than that of the POY, and the tension difference is 1-2 cN. According to the invention, conventional FDY production equipment is utilized, and a one-step method is adopted to prepare the super-imitation cotton ITY combined filament yarn with good moisture and air permeability.

The invention provides a control system for preparing manganous-manganic oxide from impurity-containing manganese liquid. Comprising a synthesis kettle; the feeding metering pump set comprises a liquid caustic soda metering pump and a pre-synthesis liquid metering pump; the valve group comprises a discharge valve, a steam valve and a pure water valve; the pH meter is arranged on the synthesis kettle; a first flow meter; a second flow meter; the M01 stirring motor is arranged on the synthesis kettle and is used for mixing solutions in the kettle; the M02 stirring motor is arranged on the overflow liquid receiving tank; the air blower is arranged on a pipeline connected with the synthesis kettle; the first liquid level meter is arranged on the synthesis kettle; the second liquid level meter is arranged on the overflow liquid receiving tank; and the thermometer is arranged on the synthesis kettle and is used for monitoring the temperature of the solution in the synthesis kettle. The system further comprises a central controller. By means of the system, the feeding state of the synthesis kettle can be automatically regulated and controlled, monitoring, debugging and alarming of the preparation process are facilitated, meanwhile, feeding of feeding liquid is stable, the temperature of the synthesis kettle is accurately controlled, and the fluctuation range of the pH value is small.

The hydraulic diaphragm metering pump comprises a pump head, a pump body and a motor, a transmission assembly is arranged in the pump body, the motor is used for driving the transmission assembly, and the transmission assembly comprises a driving shaft, a constant-speed cam, a first plunger assembly and a second plunger assembly. The first plunger assembly and the second plunger assembly are located on the two sides of the constant-speed cam respectively, the first plunger assembly is used for controlling the first diaphragm assembly, and the second plunger assembly is used for controlling the second diaphragm assembly. The constant-speed cam structure is optimally designed, reciprocating synchronous control over the first plunger assembly and the second plunger assembly is achieved, and in the reciprocating motion of the first plunger assembly and the second plunger assembly, a first diaphragm cavity and a second diaphragm cavity are in the discharging and sucking complementation state; medium flow in the first pump cavity and the second pump cavity is always in a complementary process, and medium flow transmission is always in a constant state.

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 invention relates to the technical field of reverse osmosis equipment, and particularly discloses an efficient reverse osmosis device which comprises a reverse osmosis system, a barrel and a metering pump, and a mixing module, a communicating pipe and a liquid taking module are arranged in the barrel; the mixing module comprises a mixing chamber which is arranged in the cylinder body and is communicated with the metering pump, the mixing chamber is provided with a liquid inlet, an impeller is rotationally mounted at the liquid inlet, stirring blades which are in transmission fit with the impeller are further rotationally mounted in the mixing chamber, and the communicating pipe is vertically fixed in the mixing chamber and is communicated with the mixing chamber through the liquid inlet. The scale inhibitor mixing device has the beneficial effects that the fluxes of the liquid inlet channels on the upper liquid suction disc and the lower liquid suction disc are simultaneously adjusted through the adjusting plugs, so that an upper-layer scale inhibitor and a bottom scale inhibitor in a certain proportion are respectively extracted from the upper liquid suction disc and the lower liquid suction disc, and the extracted scale inhibitors enter the mixing chamber from the communicating pipe together to be mixed. After mixing, the concentration can meet the adding standard, and finally pumping into a reverse osmosis system.

A mobile pump system for pumping water for extinguishing with an auxiliary agent, and a method therefor. The mobile pump system includes a frame for housing the pump system, a booster pump arranged in the frame, a metering pump arranged in the frame for the purpose of adding an auxiliary agent to a water flow, and a drive configured to drive the booster pump and the metering pump. The metering pump is provided with a displaceable metering pump frame and coupling means for connecting the metering pump to a container of the auxiliary agent.

The invention belongs to the technical field of purification stations, and particularly discloses an automatic chemical feeding control device for a purification station, which comprises a concentrated chemical tank, a PLC (programmable logic controller), a water tank and a factory, the concentrated chemical tank is provided with a concentrated chemical pipe, the concentrated chemical pipe is provided with a diluted chemical tank, the diluted chemical tank is provided with a water pipe, the water pipe is communicated with the water tank, the diluted chemical tank is provided with a diluted chemical pipe, the diluted chemical pipe is provided with a reaction tank, and the reaction tank is provided with a sewage pipe. The reaction tank is provided with a water outlet pipe, the water outlet pipe is communicated with the plant, the thick pesticide pipe is provided with a pesticide spraying pump, the thin pesticide tank is provided with a liquid level meter, the thick pesticide pipe, the thin pesticide pipe and the water pipe are all provided with electric valves, the thin pesticide pipe is provided with four metering pumps and flow meters, and the sewage pipe and the water outlet pipe are both provided with turbidity meters; through cooperation of the PLC and the electrically operated valve, the proportion of concentrated chemicals and water and the dosage of added chemicals during sewage treatment are flexibly controlled, personal errors are reduced, and the stirring speed is increased through aeration stirring of the chemical liquid through the vacuum pump, so that the problems of personal errors and low stirring speed due to manual chemical adding of an existing purification station are solved.

The invention discloses a full-automatic multi-component dispensing dynamic mixing proportion closed-loop control system, which relates to the technical field of semiconductor manufacturing, and comprises a multi-component feeding module, a dynamic proportioning execution module, an online detection module, an intelligent control module, a mixing reaction module, an anti-pollution module and a data management module, the device has the advantages that anti-sticking conveying and rapid switching of multi-form raw materials are achieved through a plurality of independent flow channels and inner wall diamond-like coatings of the multi-component feeding module in cooperation with a flow channel inlet vibrating screen and an outlet electromagnetic valve, a double-metering-pump parallel structure and a double-axial-flow type pulse damper are adopted in the dynamic matching execution module, and the dynamic matching efficiency is improved. And by combining a nonlinear model prediction controller of the intelligent control module and BP neural network adaptive compensation, the dynamic adjustment precision of the multi-component mixing ratio is remarkably improved, the mixing uniformity and purity reach the standard, the product scrapping caused by the ratio error is greatly reduced, and the photoresist production yield and stability are improved.

The invention relates to the technical field of fine chemical engineering, and provides a method for synthesizing O-methyl-N-nitroisourea by a micro-channel reactor, which comprises the following specific steps: adding nitric acid into a four-neck bottle for cooling, dropwise adding fuming sulfuric acid, controlling the temperature of a mixed solution, adding sulfuric acid into the four-neck bottle, and reacting for 2-4 hours; stirring and a low-temperature constant-temperature reaction bath are started to cool sulfuric acid, disulfate is put into a four-opening bottle to prepare a disulfate sulfuric acid solution, a mixed acid metering pump is started, a disulfate sulfuric acid solution metering pump is started, the disulfate sulfuric acid solution is mixed and enters a nitration micro-channel reaction device, and after heat preservation of nitration liquid is completed, the nitration liquid is dropwise added till the temperature is lowered to 0 DEG C in advance; the preparation method comprises the following steps: adding water into a reaction kettle, dropwise adding while stirring, continuously cooling and preserving heat after dropwise adding, carrying out suction filtration on eluted feed liquid, and washing a filter cake with chilled water to obtain an O-methyl-N-nitroisourea wet product, so that the defects of long production period, low effective productivity, lower safety coefficient and relatively higher safety risk of a traditional method for synthesizing O-methyl-N-nitroisourea are overcome.

The invention discloses a desulfurization absorption tower foam monitoring and defoaming precise control method and system, and the method comprises the steps: collecting the monitoring data of a desulfurization absorption tower, and carrying out the data preprocessing; the liquid level height and density are calculated according to the pressure data, the calculated density is compared with the online measurement density, and the current bubble condition of the absorption tower is obtained; comparing a difference value between the calculated density and the online measured density with a dynamic threshold value for controlling a defoaming agent, controlling the operation of a defoaming agent metering pump, determining control parameters of the metering pump, and obtaining an output defoaming agent dosage; and the change conditions of the density error and the dynamic threshold value are monitored and recorded in real time, real-time data and a deviation curve are displayed, the control strategy of the defoaming agent metering pump is adjusted according to the real-time data and historical data, and the defoaming effect is optimized. According to the invention, under the condition of different foaming concentrations, the optimal defoaming effect is realized, the operation cost is further reduced, and the operation stability and efficiency of the desulfurizing absorption tower are improved.

The invention provides antistatic quick-dry dust-free cloth and a preparation method thereof. The preparation method comprises the following steps: drying conductive PET and PA6; transferring to a screw extruder for extruding and melting, filtering by a filter, quantifying by a metering pump, feeding into a spinning box body, spraying by a spinneret plate, cooling by side blowing air, drafting at a high speed by a tubular drafting device, and uniformly paving on a web forming machine to form a fiber web; the fiber web enters a spunlace area after being pre-humidified, and a wet fiber web is formed; the wet fiber web is dried, trimmed and wound into a roll, and the dust-free cloth with hollow fibers is formed; cleaning and drying the dust-free cloth; dipping in a hydrochloric acid solution for interval ultrasonic treatment; washing and drying to obtain dust-free cloth with a primary porous hydrophilic structure; and performing low-temperature plasma treatment. The dust-free cloth with the hollow fiber is prepared, pores are increased in the hollow fiber, the water absorption effect can be enhanced by means of the capillary wicking effect, and meanwhile, the hollow fiber is easy to conduct moisture, so that the dust-free cloth has the characteristics of rapid water absorption and rapid drying.

The invention discloses a metering pump with buffering and damping functions, and relates to the technical field of metering pumps, the metering pump comprises a pump body, a driving device, a compensation device and floating balls, the driving device is connected with the pump body, the compensation device is connected with the pump body, the pump body is sequentially provided with a liquid inlet, a working cavity and a liquid outlet from bottom to top, and the floating balls are arranged in the liquid inlet and the liquid outlet respectively. The two floating balls are movably connected with the liquid inlet and the liquid outlet respectively, the driving device comprises a diaphragm, the diaphragm is arranged in the working cavity, and the compensation device is used for compensating pressure loss in the working cavity. A driving device serves as a power source, pressure is adjusted by driving a diaphragm to deform, two floating balls are controlled to open and close a liquid inlet and a liquid outlet, liquid pumping is carried out, mechanical transmission is adopted, mechanical abrasion is easily caused, transmission precision is affected, pressure loss of pump liquid is caused, and metering precision is reduced. And the compensation device is arranged to detect the instantaneous pump liquid amount, so that the metering precision is ensured.

The present invention relates to the technical field of wastewater treatment, and specifically, to a wastewater treatment device and method, comprising the following steps: step 1: injecting wastewater into a flocculation scum treatment tank through a wastewater inlet; step 2: injecting an appropriate amount of composite aluminum salts and polyacrylic agents into the flocculation scum treatment tank through a metering pump to perform coagulation assistance and flocculation enhancement treatment; and starting an air pump to inject air into the flocculation scum treatment tank through an aeration pipe, forming tiny bubbles, whereby due to the flocculation effect of the flocculant, originally fine matters in the wastewater agglomerate into larger particles, forming suspended matters, and these suspended particles adhere on the bubbles and rise up to the water surface for the convenience of being processed by a foam pushing plate.

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.

The invention relates to an underwater multi-source energy supply split type power station system and a working process. Comprising a split raw material pressure-resistant cabin, a split gas-producing pressure-resistant cabin, a split galvanic pile pressure-resistant cabin, a metering pump, a hydrogen-producing reactor, an oxygen-producing reactor, a fuel cell galvanic pile, a thermoelectric generation battery pack, a storage battery pack, a DC / DC converter, a storage battery pack, a wall-attached water tank, a wireless power supply module, a limited power supply module, a cut-off type quick connector, a wet plug connector and the like. The corresponding split pressure-resistant cabins can be replaced or replenished according to the working characteristics and the service life of equipment in different cabins, the whole pressure-resistant cabin does not need to be dragged out of deep water when part of the equipment breaks down or raw materials are replenished once, and the equipment maintenance difficulty and the raw material replenishment difficulty are greatly reduced.

Methods for controlling supply pump delivery pressure in a system having a supply pump, a metering pump, a delivery line extending between them where the supply pump delivers material through the delivery line to a metering pump inlet; and a pretensioned pressure buffer of variable buffer volume is connected upstream of the metering pump inlet, the buffer volume capable of receiving material from the delivery line when delivery line pressure near the pressure buffer is >pretensioning pressure P of the pressure buffer and capable of dispensing material to the delivery line when delivery line pressure near the pressure buffer is <the pretensioning pressure P; the system may also include a pressure sensor and a control unit, connected to the sensor, supply pump, and metering pump, which transmits a value to the supply pump based on metering pump status and delivery line actual pressure deviation from target pressure.

The invention relates to the technical field of epoxy asphalt batching equipment, discloses an epoxy resin batching device for steel bridge deck pavement and an adding process thereof, solves the technical problems in the prior art, and comprises a storage tank, a metering and weighing system, a conveying system and a central control system, the storage tank comprises a first storage tank A and a second storage tank B; the metering and weighing system comprises a first metering pump a, a second metering pump b and a metering hopper; the conveying system is installed between the metering hopper and a mixing cylinder of a mixing plant and used for providing power to feed and add a mixture in the metering hopper into the mixing cylinder. The conveying system comprises a pneumatic control valve, a conveying pump, a gas-liquid mixer, an electromagnetic valve and a compressed air source. And the central control system is used for controlling the operation of the batching device and controlling the completion of the circulation control period. According to the technical scheme, the novel epoxy resin adding equipment is developed and used for circularly batching, the batching proportion is automatically formed, and the working efficiency is high.

The invention provides a distributed electro-hydraulic driving system based on bucket rod independent oil supplementation and an electric excavator. The distributed electro-hydraulic driving system comprises a bucket distributed system assembly, a bucket rod distributed system assembly, a movable arm distributed system assembly and a hydraulic oil tank. Each distributed system assembly is provided with a driving motor to drive an open type variable pump to supply oil to the open type variable pump so as to independently drive a corresponding working oil cylinder to operate, and each bucket rod distributed system assembly is additionally and independently provided with a bucket rod oil supplementing motor to drive a bucket rod metering pump to supply oil to the bucket rod metering pump so as to solve the problems that when a bucket rod oil cylinder operates rapidly, the flow demand is large, and the operation is complex. And oil supply is insufficient. The system aims at achieving high-energy-efficiency distributed driving of multiple linear actuators of the electric excavator so as to solve the problems that a centralized hydraulic system of an existing electric excavator is high in energy consumption and low in energy efficiency.

The utility model relates to the field of industrial boiler equipment, in particular to an automatic chemical feeding device for a boiler, which comprises a chemical feeding tank and the boiler, the chemical feeding tank and the boiler are connected through a boiler water supply pipeline, the top of the chemical feeding tank is provided with a water feeding port and a chemical feeding port, the water feeding port is connected with an external water supply pipeline, and the chemical feeding port is connected with an external chemical supply pipeline. A first electromagnetic valve is arranged on the water adding opening, a second electromagnetic valve is arranged on the medicine adding opening, a liquid level meter is installed on the outer side face of the medicine adding tank, a metering pump is arranged on a water supply pipeline of the boiler, a water quality monitor is arranged on the inner wall of the boiler, and the system further comprises a controller which is electrically connected with the first electromagnetic valve, the second electromagnetic valve, the liquid level meter, the metering pump and the water quality monitor. The utility model provides an automatic boiler dosing device which solves the problems that an existing boiler dosing device is low in operation efficiency, high in safety risk and high in maintenance cost.

The invention relates, inter alia, to a dosing device (10) for dosing and supplying media (11a, 11b) via fluid lines (12a, 12b, 12c, 14, 12e, 12f, 12g, 12l, 12m, 12n) to at least one target device (13a, 13b, 13c), in particular to a commercial textile washing machine, wherein the dosing device has a switching device (14a, 14b, 14c) which is connected on the input side to a dosing pump (15) and to a rinsing pump (16) or to a rinsing device (90) and on the output side to a target device (13a, 13b, 13c), and which can be addressed by a control (17) of the dosing device (10) to change its switching state, wherein the switching device (14a, 14b, 14c) in a first switching state (18) a communicative connection between the metering pump (15) and the target device (13a, 13b,13c) and in a second switching state (19) provides a communicative connection between the flushing pump (16) or the flushing device (90) and the target device (13a, 13b, 13c).

The utility model relates to the technical field of liquid treatment devices, in particular to a flow stability control device. A flow stable control device comprises a metering pump, a damper, a back pressure valve and a pipeline, the metering pump, the damper and the back pressure valve are all installed on the pipeline in series, the metering pump is placed in the fluid direction, the damper is located at the front end of the metering pump, the back pressure valve is located at the front end of the damper, and the metering pump, the damper and the back pressure valve are sequentially connected in series to form a continuous channel. The metering pump controls the medicament flow, the damper stabilizes the flow, reduces the influence of pressure change and pump wear, and the back pressure valve adjusts the pressure, so that stable flowing of the medicament is guaranteed, the purposes of flow control and pressure adjustment are achieved, the series design improves the dosing accuracy and stability, and efficient operation of the treatment process is guaranteed.

The invention discloses a high-precision electromagnetic plunger metering pump which comprises a pump body, a valve body, an electromagnetic control device and a plunger assembly. The electromagnetic control device comprises a movable iron core which is movably arranged and an electromagnet assembly for controlling the movable iron core to move; the plunger assembly comprises a positioning ring, a buffering heat insulation ring and a plunger rod, the positioning ring is provided with a containing groove and a via hole, a first rotation limiting structure is arranged between the positioning ring and the pump body, the buffering heat insulation ring is arranged in the containing groove and connected to the movable iron core, and a second rotation limiting structure is arranged between the buffering heat insulation ring and the positioning ring. The plunger rod penetrates through the via hole and extends into the plunger moving groove, and a sealing assembly is arranged between the periphery of the plunger rod and the plunger moving groove. The arrangement of the buffer heat insulation ring can prevent the heat of the movable iron core from being transmitted to the plunger rod, limit the rotation of the positioning ring relative to the pump main body and limit the rotation of the buffer heat insulation ring relative to the positioning ring, so that the plunger rod can be ensured to hit the same position of the plunger moving groove every time, and the quantification is more accurate.

The utility model provides an automatic metering and conveying device for preparing two-component sealant, which comprises a metering pump, a material conveying pipeline and a circulating cleaning pipeline, the input end and the output end of the metering pump are connected with the material conveying pipeline, and a pressure sensor is arranged on the material conveying pipeline; a first three-way electromagnetic valve and a second three-way electromagnetic valve are arranged at the two ends of the material conveying pipeline correspondingly, and one end of the first three-way electromagnetic valve and one end of the second three-way electromagnetic valve are connected with the tail ends of the two ends of the circulating cleaning pipeline correspondingly. A first three-way pipe and a second three-way pipe are arranged at the two ends of the circulating cleaning pipeline respectively, a water inlet pipe and a water outlet pipe are connected to the other end of the first three-way pipe and the other end of the second three-way pipe respectively, and a first electromagnetic switch valve and a second electromagnetic switch valve are arranged on the water inlet pipe and the water outlet pipe respectively. A one-way valve is arranged at a liquid outlet pipe at the bottom end of the cleaning agent storage tank, a liquid inlet pipe is arranged on the side wall of the upper end of the cleaning agent storage tank, a quantitative liquid injection device is arranged in the cleaning agent storage tank and quantitatively injects a cleaning agent into the circulating cleaning pipeline to be mixed with water, and cleaning liquid is formed under the pumping action of the metering pump and conducts circulating cleaning on the pipeline. And the labor burden is reduced, and the pipeline cleaning effect is improved.