1439 results about "Peristaltic pump" patented technology

The invention discloses a method for in vitro slow release performance evaluation of a slow and controlled release preparation based on the overflow principle. A container with an upper outlet and a lower outlet is adopted to serve as a release tank, a to-be-detected medicine and a dissolution medium are placed in the release tank, a stirring device is adopted in the release tank to perform stirring, and the dissolution medium is added from the lower outlet of the release tank through a peristaltic pump; the dissolution medium dissolved with the medicine is taken away through the overflow from the upper outlet so as to offset medicine absorption or metabolism, and the slow and controlled release speed of the medicine, the total medicine overflow quantity and the total release amount are calculated by measuring the concentration of the medicine contained in the dissolution medium flowing out, the volume of the release tank and the overflow quantity. According to the method, the releasing degree of the slow and controlled release medicine can be evaluated accurately, the effective medicine release time of the slow and controlled release preparation is evaluated, and slow release performances of the slow and controlled release preparation are evaluated comprehensively.

The invention discloses a smelting wastewater trace arsenic real-time monitoring method based on an electrochemical sensing array, and relates to the technical field of electrochemical detection.The method comprises the steps that bypass sample flow is established through a peristaltic pump and pre-filtered, and stable sample flow is obtained; the sample flow is divided into a first passage and a second passage, and a form distinguishing sample flow is obtained after oxidation setting and medium equalization; performing short-time adsorption equilibrium to obtain an interface state parameter set, executing multi-segment coded deposition control based on the parameter set, and collecting a dissolution current curve; a dissolution signal set is obtained by applying single-frequency perturbation signals, characteristic peak parameters are extracted and subjected to correlation calculation with a multi-section response matrix, the total arsenic concentration and the pentavalent arsenic concentration are calculated through a weighted inversion algorithm, and a confidence interval is obtained; and calculating the concentration of the trivalent arsenic and determining an uncertainty range according to the two. According to the method, the quality judgment result is linked with the dynamic adjustment of the sampling flow, the potential amplitude and the deposition duration, so that the self-adaptive optimization control of the detection process is realized.

The invention belongs to the technical field of sewage treatment, and discloses a two-stage MABR-based efficient denitrification system, method and application, the system comprises an MABR-PN / DN reactor, an MABR-PN / A reactor, a peristaltic pump, an aeration hollow fiber membrane module, a carrier, an aeration pump, a gas flowmeter, a pressure gauge and a liquid flowmeter, and the MABR-PN / DN reactor and the MABR-PN / A reactor are arranged along the vertical direction. According to the system, the series design of the MABR-PN / DN and the MABR-PN / A is utilized, the adverse effect of organic matter in sewage on anaerobic ammonia oxidation treatment of high-concentration ammonia nitrogen wastewater is reduced, nitrate nitrogen generated by the MABR-PN / A flows back to the first-stage MABR-PN / DN to achieve denitrification, the denitrification limitation of a single reactor and a single denitrification path is broken through, and the overall total nitrogen removal rate of the system is higher than 90%.

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 an energy-saving air conditioner fan circulating water pump and a control method, and relates to the technical field of energy-saving household appliances, and the energy-saving air conditioner fan circulating water pump comprises a motor, a peristaltic pump shell, a peristaltic pump rotor and a centrifugal pump shell. The front end of the motor output shaft is connected with a fan; a plurality of extrusion wheels are arranged on the peripheral side of the peristaltic pump rotor, when the peristaltic pump rotor is in a first state, the extrusion wheels are matched with the peristaltic pump shell to extrude the elastic hose, the peristaltic pump rotor is in transmission connection with the output shaft, and when the peristaltic pump rotor is in a second state, the peristaltic pump rotor is separated from the output shaft; the extrusion wheel is separated from the elastic hose, the centrifugal pump shell is connected to the rear end of the peristaltic pump shell, an impeller is arranged in the centrifugal pump shell and connected to the rear end of the output shaft, the centrifugal pump shell is connected with a first water inlet pipe and a first water outlet pipe, and the first water outlet pipe is communicated with the water inlet end of the elastic hose. According to the centrifugal pump, one motor can be used for driving the fan and the impeller in the centrifugal pump shell, and energy consumption is reduced.

The invention relates to a waste liquid treatment device for automatically separating radionuclides. The waste liquid treatment device comprises a first waste liquid collection passage and a second waste liquid collection passage, an upstream liquid supply channel shared by the two channels comprises an injection pump and a multi-way valve, and the injection pump inputs liquid into the multi-way valve. The first waste liquid collecting channel directly guides cleaning liquid, replacement liquid and the like which do not need to be reserved into a waste liquid barrel through a first output port of the multi-way valve. The second waste liquid collecting channel is sequentially connected with a plurality of resin columns, a waste liquid tank, a peristaltic pump and a waste liquid barrel through a second output port of the multi-way valve, waste liquid generated by the resin columns firstly enters the waste liquid tank for temporary storage, and when the liquid level of the waste liquid tank reaches a preset threshold value, the peristaltic pump automatically pumps and discharges the waste liquid into the waste liquid barrel for centralized collection. The device can distinguish reserved liquid from waste liquid according to steps, realizes automatic flow division, temporary storage and discharge of the waste liquid, avoids manual pouring of the waste liquid halfway, ensures continuous operation of a long-time and multi-channel separation process, and reduces the risk of personnel exposure in a radioactive waste liquid treatment process.

The present disclosure relates to systems, devices, and methods for automated fluid transfer. In an embodiment, the present disclosure relates to a system for fluid transfer between a fluid device and a cartridge for cell processing. The system comprises a first portion comprising an instrument head coupled to a gantry, the instrument head comprising a pneumatic actuator, a peristaltic pump, and a gripping feature for receiving the fluid device. The peristaltic pump may be configured to engage compressible fluidic tubing of a fluid pump module of the fluid device to transfer the fluid between the fluid device and the cartridge. The system further comprises a second portion comprising a docking station for receiving the cartridge. In some variations, movement of the pneumatic actuator relative to the fluid pump module causes occlusion of the compressible fluidic tubing of the fluid pump module by the peristaltic pump.

The invention discloses an air microorganism aerosol alarm sampling system and method and an unmanned aerial vehicle system. A main controller receives a current position positioned by a GPS positioning module, and when the current position is in a to-be-detected area, an air pump and an alarm sampling optical module are started to pump air into the alarm sampling optical module; the alarm sampling optical module samples microbial particles in the air to form a fluorescence signal, the main controller analyzes the aerosol concentration according to the fluorescence signal and identifies whether the aerosol is a biological aerosol, when the aerosol concentration exceeds a set threshold value or the aerosol is identified as the biological aerosol, the alarm is controlled, and meanwhile, the sampling module is controlled to be started; the main controller controls the liquid supplementing peristaltic pump to start, the sampling liquid in the sampling liquid bottle is pumped into the sampler, then the motor driver is controlled to drive the fan to start to enable air to enter the sampler for sampling, only the sampling peristaltic pump is controlled to start after sampling is completed, and the sample liquid in the sampler is conveyed into the sample bottle through the three-way pipe. The collection of the microbial aerosol particles is completed.

The invention particularly discloses a fractured rock mass grouting three-dimensional visualization test device and method, and relates to the technical field of rock mass engineering. The device comprises a test box body, a liquid inlet and outlet system, a monitoring system and a dynamic water environment simulation assembly, the test box body is made of a transparent acrylic material and is composed of an upper cover plate, a lower cover plate, a front cover plate, a rear cover plate, a baffle and two side cover plates, and a core experiment module is arranged in the test box body; the liquid inlet and outlet system is sequentially connected with the liquid holding device, the peristaltic pump, the valve, the Doppler flow velocity sensor and the test box body through rubber pipes; the monitoring system integrates an image collection unit and a data monitoring unit, an industrial-grade 3D camera and a binocular camera achieve visualization of the displacement process, and a fiber bragg grating pressure sensor synchronously collects fracture pressure data and transmits the fracture pressure data to a computer through a multifunctional data collection module. The device can be used for observing the displacement process of the slurry in the three-dimensional fracture in real time, synchronously monitoring key parameters, adapting to complex test working conditions and providing reliable support for grouting law research.

The utility model discloses a peristaltic pump for a spectrograph, which comprises a pump body provided with a rotor; the first pumping component is connected to the pump body and located on the upper side of the rotor, the first pumping component comprises a first pump pipe, a first pressing block and a first pressing rod, and the first pressing rod is connected with the first pressing block, drives the first pressing block to move towards one side of the first pump pipe and can drive the first pump pipe to be matched with the rotor in an abutting mode; the second pumping component is connected to the pump body and located on the lower side of the rotor, the second pumping component comprises a second pump pipe, a second pressing block and a second pressing rod, and the second pressing rod is connected with the second pressing block, drives the second pressing block to move towards one side of the second pump pipe and can drive the second pump pipe to be matched with the rotor in an abutting mode; when the rotor rotates, the rotor can drive the first pump pipe and the second pump pipe to pump liquid in the opposite directions. The functions of liquid supply and waste discharge are achieved in the same pump body at the same time, the working efficiency is remarkably improved, the system structure is simplified, and the requirement for additional pumping equipment is reduced.

The invention relates to the technical field of historic building crack repair, and discloses a microbial concrete grouting device for historic building repair, comprising: a sealing plate used for sealing a crack and provided with a through groove; the embedded rod is obliquely inserted into the ancient building and is inserted into the sealing plate; the pouring rods are vertically inserted into the crack through the through grooves, one end of each pouring rod abuts against the deep end of the crack, the depth of the crack is reflected through the display position of the other end of each pouring rod, and the pouring rods are arranged at intervals; the plugging block is installed in the through groove in a sliding mode, a penetrating hole allowing the pouring rod to penetrate through is formed in the plugging block, and after the pouring rod penetrates through the plugging block, the crack is plugged; a plurality of charging baskets; the stirring barrel is provided with a stirring paddle and is communicated with the plurality of material barrels; one end of the peristaltic pump is communicated with the stirring barrel, and the other end is communicated and detachably connected with the pouring rod; and the cart is used for transporting and accommodating the material barrel. The depth of the crack can be visually obtained, and the crack can be repaired from deep to shallow.

The invention discloses a bionic wrist pulse generator, and relates to the technical field of medical instruments, the bionic wrist pulse generator comprises a wrist bionic structure and a blood vessel bionic structure, the wrist bionic structure comprises a bionic skin layer, a mounting layer and a supporting layer, and the mounting layer is arranged between the bionic skin layer and the supporting layer; when the device is used, the peristaltic pump draws liquid from the liquid groove and outputs the liquid into the elastic tube, the purpose of simulating pulse vibration signals of the wrist of the human body is achieved by adjusting parameters of the peristaltic pump, adjusting the flow of the liquid in the elastic tube and reproducing periodic signals, the three-stage branch network structure is designed, the first-stage branch simulates the arteriole, and the second-stage branch simulates the arteriole; the second-stage branch and the third-stage branch simulate a micro artery and a blood capillary respectively, and then a periodic signal is sensed on the bionic skin layer, so that the practice effect is achieved.

The utility model relates to the technical field of experimental equipment, and provides a reagent adding device which comprises a peristaltic assembly, an air pump, a first switch valve and a controller, the peristaltic assembly comprises a peristaltic pump, and an inlet of the peristaltic pump is communicated with a reagent bottle through an input pipe; an outlet of the peristaltic pump is communicated with the sample cup through an output pipe; an inlet of the air pump is communicated with air, and an outlet of the air pump is communicated with an inlet of the peristaltic pump through an exhaust pipeline; the first switch valve is arranged on the exhaust pipeline; the peristaltic pump, the air pump and the first switch valve are electrically connected with the controller, the controller controls the peristaltic pump to operate based on a target value, and after the target value is reached, the controller controls the peristaltic pump to stop, the air pump to start and controls the first switch valve to open. By controlling the operation of the peristaltic pump, the air pump and the first switch valve, the reagent adding amount can be accurately controlled, the reagent is prevented from being retained in the peristaltic pump and the output pipe, and the reliability and the accuracy of the reagent adding process are improved.

The invention discloses a micro reagent total phosphorus analyzer and an analysis method, and belongs to the technical field of water quality monitoring. A liquid metering assembly comprises an injection pump, a liquid storage ring and a multi-channel valve; the digestion colorimetric assembly comprises a digestion tube, a heating element, a temperature sensor, a fan, a light source and a photodiode; the liquid discharge assembly comprises a peristaltic pump; a liquid outlet of the injection pump is connected with a first port of the liquid storage ring through the first electromagnetic pinch valve and the second electromagnetic pinch valve in sequence, a second port of the liquid storage ring is connected with a public port of the multi-channel valve, and a sample inlet of the digestion pipe is connected with a first channel of the multi-channel valve and the peristaltic pump through the first high-pressure two-way valve. The other channels of the multi-channel valve are respectively connected with the water sample to be detected, and a total phosphorus detection reagent and a total phosphorus standard solution which are used for carrying out total phosphorus analysis on the water sample to be detected. The micro-reagent total phosphorus analyzer provided by the invention can eliminate cross contamination of reagents, reduce reagent consumption and waste liquid amount, and improve metering precision and detection stability of micro-reagents.

The invention discloses a microorganism solidification inclined deposition surface sandy soil hollow cylinder sample preparation device and a use method. The sample preparation device comprises a hollow cylinder mold and a supporting pedestal for the hollow cylinder mold to rotate. One end of the hollow cylindrical mold can be lifted to a proper angle through a supporting rod with threads and a U-shaped hoop which are arranged on a supporting pedestal, so that a deposition surface inclined at any angle of a sample is vertical to the ground; a peristaltic pump is connected with a grouting channel distributed on the inner cylinder, and grout is input into the hollow cylindrical sample. Slurry can flow along the deposition surface under the action of gravity, the phenomenon that microorganisms are preferentially attached to the area close to the grouting hole is weakened while the grouting efficiency is improved, disturbance of slurry flowing to the inclined deposition surface of the sample is reduced, and the problems that a traditional grouting method is low in efficiency and large in disturbance to the sandy soil sample on the inclined deposition surface are solved. Therefore, the stability of the inclined deposition surface of the sample is ensured, and the preparation quality and test result reliability of the microorganism solidification inclined deposition surface sample are improved.

The invention belongs to the technical field of peristaltic pumps, and particularly discloses a cooling liquid circulating peristaltic pump for heat dissipation for optical crystal processing, which comprises a mounting shell, a motor is arranged on one side of the mounting shell, a retaining shell is detachably arranged on the other side of the mounting shell, and two mounting holes are formed in each of the opposite sides of the mounting shell and the retaining shell. Every two corresponding mounting holes are in butt joint to form a mounting groove, a groove is formed in the inner wall of each mounting hole, and a mounting pipe is arranged in each mounting groove. By arranging an extrusion mechanism composed of a second spring, a sliding rod, a sliding block and the like, an extrusion gap generated due to abrasion of the hose can be compensated in real time, the mechanism can continuously push an extrusion wheel to be tightly attached to the hose in the whole service life period of the hose, constant extrusion force is maintained, and the service life of the hose is prolonged. Therefore, flow and pressure attenuation caused by abrasion of a hose of a traditional peristaltic pump is effectively avoided, and the stability of cooling liquid supply and the reliability of the heat dissipation effect in the optical crystal machining process are guaranteed.

The invention discloses an activated sludge fluorescence online detection device based on a flow cell, and relates to the field of activated sludge biomass detection.The activated sludge fluorescence online detection device comprises a fluorescence spectrophotometer and a fluorescence spectrophotometer sample table arranged on the fluorescence spectrophotometer, and the fluorescence spectrophotometer is connected with a processor through a cable; the fluorescence spectrophotometer sample table is connected with a sample cup through a guide pipe, activated sludge is arranged in the sample cup, and a peristaltic pump is arranged on the guide pipe; the activated sludge continuously flows through the fluorescence spectrophotometer sample table through the guide pipe for three-dimensional fluorescence detection through the peristaltic pump, sludge sedimentation in a traditional cuvette is avoided, measurement is simple and convenient, and on-line real-time monitoring of the activated sludge biomass can be achieved.

The utility model discloses a foam spraying device which comprises a water inlet pipe, a water outlet pipe, a first peristaltic pump, a foaming air pump, an ozone generator, an air water mixer and an ozone water mixer, the water inlet pipe is connected with the water outlet pipe through a first flow channel and a second flow channel, and the output end of the first peristaltic pump is communicated with the first flow channel; the output end of the foaming air pump is communicated with the first flow channel through the air water mixer, the foaming air pump is arranged behind the first peristaltic pump along the first flow channel, the output end of the ozone generator is communicated with the second flow channel through the ozone water mixer, and the water inlet pipe is connected with the head end of the first flow channel and the head end of the second flow channel through the flow channel switcher; the ozone water mixer is a venturi tube, the venturi tube is provided with a negative pressure tapping tube, and the negative pressure tapping tube is communicated with the output end of the ozone generator. The bubble spraying device is rich in function and suitable for occasions where people take a bath and clean pets.

The invention relates to an integrated active exhaust volume control device for CRRT, which belongs to the technical field of medical instruments and comprises a main mounting frame, and an on-line self-exhaust air bubble catcher, a continuous operation peristaltic pump, a mechanical volume follow-up compensation device, a module core controller and a piezoelectric ceramic micro compensator are integrated and fixed on the main mounting frame. The online self-discharging air bubble catcher actively removes bubbles in liquid, the peristaltic pump is continuously operated to achieve non-pulse continuous conveying of displacement liquid, the mechanical volume follow-up compensation device accurately regulates and controls waste liquid discharging, the module core controller receives signals in real time and coordinates actions of all components, and the piezoelectric ceramic micro compensator achieves fine adjustment of net dehydration. The module can eliminate bubble interference from the source, guarantee the continuity of CRRT treatment, improve the capacity management precision, simplify clinical operation, relieve the burden of medical staff and guarantee the hemodynamic stability of patients, and is suitable for CRRT treatment of critical patients.

The invention discloses a precise liquid treatment system and method based on a multi-channel liquid separation valve and gas replacement, and belongs to the technical field of biomedical detection equipment. The system comprises a multi-channel liquid distribution valve and an intelligent control system, the liquid distribution valve is provided with a plurality of channels which are respectively connected with four groups of coloring agent bottles, sheath liquid bottles, waste liquid bottles and gas bottles; a liquid level detection sensor is arranged between the liquid distribution valve and the peristaltic pump, and an outlet of the peristaltic pump is communicated with the dyeing pool. The method comprises the steps of cancer cell acquisition, fixed permeation treatment, system pre-filling, multiple fluorescent staining and fluorescent imaging. High-precision distribution of micro-liquid is realized through cooperative control of liquid separation valve channel switching and inert gas replacement, and high-precision and high-repeatability distribution of micro-upgrading liquid can be realized; a gas isolation mechanism significantly reduces the risk of cross contamination, multi-channel parallel processing improves the detection efficiency, and the device is suitable for circulating tumor cell multi-staining, flow analysis and other biomedical scenes needing high-precision liquid treatment.

The invention relates to the technical field of new energy automobile power battery thermal management, in particular to a hydrated salt phase change microcapsule for a power battery and a preparation method of the hydrated salt phase change microcapsule. According to the specific technical scheme, hydrated salt serves as a core material, methyl methacrylate serves as a shell material monomer, the monomers are polymerized on the surfaces of hydrated salt liquid drops to form a polymethyl methacrylate shell layer through an interfacial polymerization method, effective packaging of a phase change material (hydrated salt) is achieved, and the microcapsule with high phase change latent heat, low leakage rate and long cycle life is obtained. In addition, other doped auxiliary materials are deposited on an oil-water interface to improve the heat conductivity of the microcapsule. And mixing the microcapsules with heat-conducting oil to prepare suspension liquid, and driving the suspension liquid to circularly flow between the power battery packs by a peristaltic pump. According to the invention, microcapsules and liquid cooling heat dissipation are combined to provide a new thought and practical and effective temperature control and heat dissipation effects for a heat management scheme of the power battery pack.

The invention relates to a water quality multi-parameter automatic checking and measuring system device which comprises a display panel assembly, a pump valve mounting plate assembly and a measuring pool assembly, the display panel assembly is used for displaying the running state and operation information, and the pump valve mounting plate assembly comprises a multi-way valve and a peristaltic pump and is used for controlling conveying of a water sample or standard liquid; the measuring cell assembly comprises a main body measuring cell, an electrode, a liquid level detector, a drain valve, a waste liquid pump and an ultrasonic vibrator, and through cooperation of the display panel assembly, the pump valve mounting plate assembly and the measuring cell assembly, full-flow automation of water sample collection, standard liquid calibration and cleaning is achieved; the measuring cell adopts a stainless steel independent chamber and is provided with a liquid level detector, a pinch valve and a waste liquid pump, interference is avoided, safety is improved, in-situ self-cleaning is achieved by integrating a high-frequency ultrasonic vibrator, the service life of an electrode is prolonged, long-term accuracy and reliability of data are ensured by combining a response time intelligent diagnosis module, and the device is suitable for water quality online monitoring and industrial control.

The application discloses a microbial electrochemical system device and method for realizing wastewater treatment, CO2 fixation and in-situ synthesis of microbial protein synchronously, which comprises an anode chamber, a cathode chamber, a protein production chamber, a power supply, a mixed gas tank and a peristaltic pump; the anode chamber, the cathode chamber and the protein production chamber are sequentially arranged from left to right; a cation exchange membrane is arranged between the anode chamber and the cathode chamber; a cation exchange membrane is also arranged between the cathode chamber and the protein production chamber; an anode is arranged in the anode chamber and connected with the positive pole of the power supply through a wire, and a resistor is arranged on the wire connecting the anode and the positive pole of the power supply. The microbial electrochemical system and the protein production system are coupled to form an ammonia-nitrogen recovery-in-situ protein synthesis microbial electrochemical system, the system can convert active nitrogen into high-value protein products in-situ, the system can synchronously treat wastewater, recover ammonia-nitrogen and fix carbon dioxide, and has excellent environmental benefits.

The application discloses a method for continuously preparing MOF materials in water phase by using a supergravity technology, and comprises the following steps: S1, weighing metal salt and dissolving the metal salt in a deionized water solution at normal temperature, and recording the solution as reaction liquid A; S2, weighing organic ligand and dissolving the organic ligand in an alkali solution at normal temperature, and recording the solution as reaction liquid B; S3, starting a supergravity reactor, and simultaneously introducing the reaction liquid A and the reaction liquid B into the supergravity reactor by a peristaltic pump to perform a precipitation crystallization reaction, so as to prepare a MOF material suspension, wherein the supergravity reactor is selected from an external circulation rotating packed bed; and S4, performing centrifugation, washing, activation and drying on the suspension, so as to obtain MOFs. The method is green and environment-friendly, the prepared product has high crystallinity, large specific surface area, uniform particle distribution, regular morphology, and the average particle size is 20 nm-6 microns, and the size is controllable.

The invention provides a peristaltic pump control method for a pneumatic mechanical gripper, which relates to the field of intelligent control, and comprises the following steps: constructing a pneumatic conversion module, a peristaltic pump PID control module, a driving execution module, a bending sensing module and an error feedback processing module; the bending angle difference of the mechanical gripper is calculated and subjected to pneumatic conversion to obtain a bending error; the position type PID outputs a control signal, and Kp, Ki and Kd are set on line through a self-adaptive migration optimization algorithm; adjusting and updating individuals by utilizing a direction perception consensus index, a virtual adsorption point set and an adsorption step length; generating a time offset factor correction time sequence based on the historical response memory function; and the corrected signal drives a motor, and precise control over the mechanical gripper is achieved. According to the method, overshoot and steady-state errors are remarkably reduced, response time is shortened, oscillation is suppressed, manual parameter adjustment is reduced, and robustness is improved.

The invention discloses a micro-through-hole structure polymer metallization method for guided wave transmission, and belongs to the technical field of photoelectric device processing, a polymer substrate is used for replacing a traditional all-metal material, and the micro-through-hole structure polymer metallization method for guided wave transmission is achieved through the multi-stage processes of plasma activation, chemical coarsening, sensitization, chemical plating, electroplating and the like. And forming a compact and high-adhesion metal layer on the inner surface of the through hole of the polymer substrate. In the process, a microfluid pump or a peristaltic pump is adopted to drive the solution to circularly flow in the through hole and the microcavity. According to the micro-through-hole structure polymer metallization method for guided wave transmission, dynamic flowing of a chemical plating solution in a micro-through hole and an internal cavity is achieved by introducing a micro-fluid pump or a peristaltic pump, and therefore a uniform, compact and firmly-attached metal layer is obtained.

The invention discloses a simple high-throughput preparation method of spinel type nano high-entropy oxide, which comprises the following steps: 1) dissolving ferric nitrate, cobalt acetate, nickel acetate and at least two other different metal salts in a solvent to form a feed liquid A; 2) dissolving a precipitant in the same solvent as the solvent in the step 1) to form feed liquid B; 3) starting the supergravity reactor; 4) simultaneously introducing the feed liquid A and the feed liquid B into a supergravity reactor through a peristaltic pump to carry out a coprecipitation reaction, and obtaining a high-entropy oxide precursor solution after the reaction; 5) centrifuging and washing the high-entropy oxide precursor solution, and dispersing the high-entropy oxide precursor solution in water to obtain a clean precursor solution; 6) introducing the clean precursor solution into a hydrothermal kettle for hydrothermal reaction, and obtaining a nano high-entropy oxide solution after the reaction; and 7) carrying out alcohol washing on the nano high-entropy oxide solution, and drying to obtain the nano high-entropy oxide. The prepared oxide is high in quality, the particle size is 10-100 nm, and the oxide still has good dispersity under the condition that a modifier is not added.

The invention discloses a peristaltic pump and a magnetic suspension pumping system. The peristaltic pump comprises a pump body, a working hose arranged in the pump body and an extrusion wheel for periodically extruding the working hose. One end of the working hose is configured as an input port, and the other end of the working hose is configured as an output port; the peristaltic pump further comprises a pressing block, the working hose is arranged between the pressing block and the extrusion wheel, the pressing block or the extrusion wheel works at a first position and a second position, and at the first position, the pressing block and the extrusion wheel jointly extrude the working hose; and at the second position, the pressing block or the extrusion wheel loosens extrusion on the working hose, and the working hose is configured to be a straight-through flow channel. The working hose of the peristaltic pump not only has a first working state in which the working hose is periodically extruded by the extrusion wheel, but also has a second working state in which the working hose serves as a direct-current channel for follow current, and can meet the requirements of providing a self-absorption function for a magnetic suspension pump in an initial stage and providing a follow current function for the magnetic suspension pump in a later stage.

The invention relates to an integrated filter disc device capable of quickly replacing a filter membrane. The limiting rotary baffle is used for tightly fixing the filtering disc upper part and the filtering disc lower part, a porous net-shaped filtering disc is arranged in an inner space formed by the filtering disc upper part and the filtering disc lower part, and a replaceable filtering membrane is placed on the porous net-shaped filtering disc. Sealing rubber rings are embedded in the lower part of the upper part of the filtering disc and the upper part of the lower part of the filtering disc; a gasket is arranged in the lower portion of the filter disc, the porous net-shaped filter disc is arranged on the gasket to play a supporting role, and a corresponding sealing rubber ring above the lower portion of the filter disc is embedded below the gasket. The invention further discloses application of the integrated filter disc device capable of rapidly replacing the filter membrane in an original microorganism enrichment instrument. The original microorganism enrichment instrument comprises a peristaltic pump, a machine shell, a filtering disc device, a water pipe guiding device, a filtering bag, a printer, a liquid crystal screen, a main board, a controller, a preprocessing storage device, a liquid level sensor, a pressure sensor, an electromagnetic valve, a photoelectric sensor and a flow sensor.

Provided is a turning apparatus with MQL based on magnetic circulation and ultrasound-assisted infiltration, comprising a turning tool fixed with 2D ultrasonic auxiliary device; a magnetic circulation nozzle and magnetic circulation recycling nozzle arranged on both sides of turning tool; lubricant channels respectively provided inside magnetic circulation nozzle and magnetic circulation recycling nozzle; magnets arranged on peripheries of lubricant channels; polarities of ends of magnets on the two nozzles facing to turning tool are opposite; lubricant channel of magnetic circulation nozzle is connected to one end of first flexible pipe, and another end is connected to lubricant canister after passing through peristaltic pump; one end of second flexible pipe is connected to the peristaltic pump, and another end is connected to a filtering mechanism; one end of third flexible pipe is connected to the magnetic circulation recycling nozzle, and another end is connected to liquid inlet of filtering mechanism.