2844 results about "Constant pressure" patented technology

The invention discloses a method for preparing a single-layer tungsten diselenide nanoband based on a space confinement strategy. By changing the flow and the growth time of hydrogen, effective control on the width and the thickness of a nanoband can be realized. The method comprises the following steps: uniformly spraying tungsten trioxide powder to one substrate, then covering the substrate by the other substrate, and forming micro reaction space which is of a 'sandwich'-like structure. Growth of a tungsten diselenide nanoband is carried out by utilizing a constant-pressure chemical vapor deposition method; physicochemical characteristics of a one-dimensional transition metal chalcogenide strongly depend on suspension key types on the edge of the one-dimensional transition metal chalcogenide, metallic properties are displayed by an ultranarrow band, and conversion from the metallic properties to semiconductor properties can be displayed from the edge to the center of a wider band; the tungsten diselenide nanoband is widely applied to micro-nano photoelectric devices due to the special property; industrial production of the tungsten diselenide nanoband can be realized through an experimental method of the invention.

Systems and methods herein generally relate to prolonging viability of bodily tissue, especially an organ such as a lung, by adjusting pressure as needed to maintain a constant pressure within the organ even during external pressure fluctuations due, for example, to transportation of the organ in an airplane. The systems and methods herein can include an electronic pump that pumps gas into an organ and a mechanical pressure regulator to release gas based on organ pressure.

Systems and methods of the invention generally relate to prolonging viability of bodily tissue, especially an organ such as a lung, by adjusting pressure as needed to maintain a constant pressure within the organ even during external pressure fluctuations due, for example, to transportation of the organ in an airplane. Gas passing into and out of the organ may be conditioned to prolong tissue viability.

Systems and methods herein generally relate to prolonging viability of bodily tissue, especially an organ, by adjusting pressure as needed to maintain a constant pressure within the organ even during external pressure fluctuations due, for example, to transportation of the organ in an airplane. The systems and methods herein can include an electronic pump that pumps gas into an organ and a mechanical pressure regulator to release gas based on organ pressure.

Systems and methods of the invention generally relate to prolonging viability of bodily tissue, especially lung tissue, through the use of an expandable accumulator to maintain a constant pressure within the lumen of the organ even during external pressure fluctuations due to, for example, flight. Systems and methods may include prolonging donor organ viability in storage through the use of an organ container that mimics the geometry and orientation of the organ in vivo.

Systems and methods of the invention generally relate to prolonging viability of bodily tissue, especially an organ such as a lung, by adjusting pressure as needed to maintain a constant pressure within the organ even during external pressure fluctuations due, for example, to transportation of the organ in an airplane. Gas passing into and out of the organ may be conditioned to prolong tissue viability.

Systems and methods of the invention generally relate to prolonging viability of bodily tissue, especially lung tissue, through the use of an expandable accumulator to maintain a constant pressure within the lumen of the organ even during external pressure fluctuations due to, for example, flight. Systems and methods may include prolonging donor organ viability in storage through the use of an organ container that mimics the geometry and orientation of the organ in vivo.

The invention belongs to the technical field of magnetofluid sealing in mechanical engineering, and particularly relates to a magnetofluid sealing device based on a labyrinth tower shape, the magnetofluid sealing device is applied to a main shaft, the magnetofluid sealing device comprises a shell assembly and a magnetofluid sealing assembly, and the shell assembly comprises a first sealing shell and an end cover; the magnetic fluid sealing assembly comprises a main shaft sleeve, a pole shoe set and a permanent magnet, a labyrinth tower-shaped sealing structure is formed between the pole shoe set and the main shaft, and the good sealing effect can still be achieved under the working conditions of large shaft diameter, high pressure and high speed; in addition, the invention further provides a sealing performance test bench for the magnetofluid sealing device based on the labyrinth tower shape, on the basis that the main shaft driving assembly is used for providing rotating speed and torque for the main shaft and the pressurizing assembly is used for providing constant pressure for the sealing device, the sealing performance of the magnetofluid sealing device is tested in cooperation with the detection assembly under the working conditions of adjusting different rotating speeds, different pressures and the like. The sealing performance of the magnetofluid sealing device is tested in real time, and the method has important guiding significance on design and optimization of a sealing gap structure.

Systems and methods herein generally relate to prolonging viability of bodily tissue, especially an organ, by adjusting pressure as needed to maintain a constant pressure within the organ even during external pressure fluctuations due, for example, to transportation of the organ in an airplane. The systems and methods herein can include an electronic pump that pumps gas into an organ and a mechanical pressure regulator to release gas based on organ pressure.

Systems and methods of the invention generally relate to prolonging viability of bodily tissue, especially lung tissue, through the use of an expandable accumulator to maintain a constant pressure within the lumen of the organ even during external pressure fluctuations due to, for example, flight. Systems and methods may include prolonging donor organ viability in storage through the use of an organ container that mimics the geometry and orientation of the organ in vivo.

The invention belongs to the technical field of intelligent control, and particularly relates to a water pump multi-mode intelligent control method based on a PLC. Operation parameters are acquired in real time through a data acquisition module, a target mode is selected from constant-pressure water supply, constant-flow water supply, energy-saving optimization and fault emergency modes through a mode judgment module according to preset triggering conditions, and an operation strategy including a start-stop sequence, a target rotating speed, a frequency converter output frequency and a pressure set value is generated through a strategy generation module. The control execution module converts the strategy into a control instruction and outputs the control instruction to the water pump driving module, and linkage operation and mode switching of the multiple water pumps are achieved in combination with the mode linkage module. And the recording and optimizing module is used for storing and analyzing the operation data and optimizing mode switching conditions and operation strategies. Self-adaptive control and multi-pump cooperative scheduling in multiple modes are achieved, the stability and energy saving performance of a water supply system are improved, and the service life of equipment is prolonged.

The invention relates to the technical field of oxytetracycline hydrochloride conveying, in particular to an oxytetracycline hydrochloride airflow conveyor which comprises an airflow feeding pump, an inner pipe discharging mechanism arranged on the airflow feeding pump, an outer pipe resonance mechanism arranged in the inner pipe discharging mechanism and a powder distributing and conveying mechanism arranged on the outer pipe resonance mechanism. And the air flow feeding pump is used for providing air flow kinetic energy for transferring the powdery oxytetracycline hydrochloride. An independent airflow feeding pump is arranged on a path for preparing oxytetracycline hydrochloride of a powder rotating roller, when the airflow feeding pump operates, constant-pressure airflow released outwards passes through an inner pipe discharging mechanism, thrust applied by part of air pressure can bear a pressure gasket to vibrate at high frequency along with transmission of part of airflow into a vibration bin assembly, and therefore the effect that oxytetracycline hydrochloride is subjected to high-frequency vibration is achieved. And finally, the inner pipe clamped by the plurality of pressure-bearing gaskets can continuously release the airflow outwards in a corrugated state, so that the loss of the powdery oxytetracycline hydrochloride on the pipe wall due to standing can be avoided.

The invention discloses a railway tunnel full-life-cycle model test system and test method considering train vibration, and relates to the technical field of railway tunnel engineering. The model test system adopts modular design and comprises a box frame module, a constant-pressure loading module, an excitation system module, a seepage system module and a monitoring system module. The test method comprises the steps of physical similar model laying, constant-pressure loading control, tunnel excavation and supporting, vibration loading and data monitoring analysis. By accurately simulating an initial stress field and train vibration loads in the construction and operation stages of the tunnel, dynamic monitoring of stress strain, deformation and damage processes of the tunnel surrounding rock and the lining structure in the whole life cycle is achieved. The device has the advantages of compact structure, modular design, high loading precision and stability, real simulation and the like, and a scientific basis can be provided for the fields of performance evaluation, structure optimization, reinforcement design and the like in the whole life cycle of the railway tunnel.

The invention provides a small-capacity air bag blood pressure detection system and a precise pressure control method thereof. A micro air pump is communicated with an air inlet of a small-capacity air bag through a pipeline, and a linear proportional valve is arranged on an air release opening of the small-capacity air bag and used for controlling the opening, closing and flow of the air release opening of the small-capacity air bag; the miniature air pump is normally opened and provides stable-flow input air flow for the small-capacity air bag, the valve opening degree of the linear proportional valve is changed by executing a self-adaptive differential constant-pressure control algorithm, then the air release speed of an air release opening of the small-capacity air bag is changed, and pressure adjustment of the small-capacity air bag is achieved by changing the difference between the inflation speed and the deflation speed. According to the invention, rapid pressure stabilization can be realized, and pressure overshoot is hardly generated after the pressure is stabilized; the pressure control precision of 1mmHg at any pressure regulation step length is realized; the problem that the traditional single-parameter closed-loop control cannot meet the precise control of each pressure interval is solved; the production cost is further reduced, and the out-of-hospital scene adaptability and the popularization degree of the equipment are improved.

The invention discloses a cast pipe inner wall grinding device and system and relates to the technical field of grinding equipment, the cast pipe inner wall grinding system comprises a rack, a rotary supporting device and a cast pipe inner wall grinding device, and the cast pipe inner wall grinding device comprises a grinding feeding mechanism, an anti-swing mechanism and a grinding mechanism; the grinding feeding mechanism comprises a first linear driving device, a first rotating power source, an outer fixing sleeve and an inner rotating shaft, the anti-swing mechanism comprises an outer rotating sleeve, a positioning wheel assembly and a distance adjusting mechanism, and the grinding mechanism comprises a second linear driving device and a grinding wheel body. The outer fixing sleeve is radially supported through the positioning wheel assembly, radial swing of the grinding wheel shaft is restrained, and the grinding stability can be improved; the distance adjusting mechanism can dynamically adjust the distance between the positioning wheel assemblies to adapt to cast pipes with different calibers; and the second linear driving device drives the grinding wheel to move in the radial direction, constant-pressure grinding is achieved in cooperation with the pressure detection device, the grinding rhythm is dynamically adjusted, the grinding effect can be improved, and the grinding consistency is improved.

The invention relates to the technical field of earthquake detection, and discloses a constant-pressure online detection device and method for the concentration and flow of gas escaped from a hot spring, and the device comprises a gas collecting hood, a buffer bottle, a gas flow detector, a constant-volume gas storage chamber, a constant-pressure detection valve, an online gas detector and a central controller; the gas collecting hood is arranged in a corresponding area of hot spring escape gas and collects the hot spring escape gas; the gas inlet end of the surge flask is communicated with the gas collecting hood through a pipeline, and the gas outlet end is communicated with the gas inlet end of the constant-volume gas storage chamber through a gas flow detector; the constant-volume gas storage chamber is communicated with an on-line gas detector pipeline through a constant-pressure detection valve, and when the air pressure value of hot spring escape gas stored in the constant-volume gas storage chamber is larger than a preset air pressure threshold value, the hot spring escape gas enters the on-line gas detector through the constant-pressure detection valve; the on-line gas detector is used for detecting gas components and concentration of gas escaped from the hot spring and sending detection data to the central controller.

The invention discloses a transcritical carbon dioxide energy storage power generation system for combined supply of cooling, heating and power, and belongs to the technical field of energy storage. Low-pressure carbon dioxide is compressed to be in a supercritical high-pressure state through the structure that the three-stage compressor and the three-stage intercooler are matched; the maximum pressure increase is obtained by using the minimum entropy increase; complete release of high-pressure carbon dioxide is realized through cooperation of a three-stage heat regenerator and a three-stage turbo expander; the condition that the equipment conformity is too high due to single-stage expansion is avoided; the surplus electric energy is stored in the valley period of the electricity price, and the high-voltage carbon dioxide is released for power generation in the peak period of the electricity price, so that economic benefits are obtained through the electricity price difference, and rapid peak regulation capacity is provided for a power grid; the high-pressure carbon dioxide storage tank adjusts the capacity of an air bag through pressure-resistant oil, so that the storage requirement of constant-pressure high-pressure carbon dioxide is met, the material cost of the high-pressure carbon dioxide storage tank is reduced, and the manufacturing cost of a power generation system is reduced; the multi-stage compression efficiency of the low-pressure carbon dioxide storage bag is improved by adopting a double-layer air bag structure.

The invention discloses a constant-pressure type compressed air energy storage system and method combined with pumping and storage, and belongs to the technical field of electric energy physical energy storage systems, and the constant-pressure type energy storage system comprises a pumped storage subsystem, a turbine expansion power generation subsystem, a compressed air energy storage subsystem and a water-gas common-capacity cabin constant-pressure subsystem. By flexibly controlling the operation modes of the subsystems and the on-off states of valves among the subsystems, the system can achieve independent energy storage and power generation operation among the pumped storage subsystem, the air compression subsystem and the turbine expansion subsystem. The design not only improves the flexibility and reliability of the system, but also enables the system to carry out optimal configuration and operation according to actual demands, thereby further improving the energy storage efficiency and economic benefits.

The invention provides a blood pressure measurement system and method based on multi-airbag cooperative control and oscillatory wave analysis, and relates to the technical field of medical instruments. Comprising an integrated cuff cover body, an inflator pump, an electromagnetic valve, a pressure balancing device and a microprocessor, a first air bag, a second air bag and a third air bag are arranged in the integrated cuff cover body, firstly, an inflation pump is started, the multiple air bags are synchronously inflated to preset initial pressure, then a first air bag electromagnetic valve and a third air bag electromagnetic valve are closed, a pressure balance device dynamically adjusts a miniature deflation valve, and the pressure in the first air bag and the pressure in the third air bag are kept constant; the inflator pump continues to inflate until the pressure in the second airbag is higher than the systolic pressure level; the measuring method specifically comprises a multi-air-bag pressure measuring mode and a double-air-bag pressure measuring mode. The multi-air-bag pressure measuring mode is that three air bags are used for measuring pressure at the same time, and the double-air-bag pressure measuring mode is that only the second air bag and the third air bag are pressurized, so that blood pressure measurement is achieved.

The invention discloses a transformer winding drying constant pressure device, which relates to the field of transformer production, including a base and a hydraulic lifting device, wherein the top of the base is rotatably connected to a cross rotating frame, and a third motor driving the cross rotating frame to rotate is installed on the top of the base, and the four arms of the cross rotating frame are all slidably connected to a bottom block, and the bottom of the bottom block is rotatably connected to a bottom roller, and the bottom roller protrudes from the top of the bottom block. In the process of pressing the transformer winding up and down, the present invention can drive the bottom roller and the top roller to rotate and roll the top and bottom of the winding back and forth through the rotating frame and the top frame, so that the top and bottom stress points of the winding can be changed back and forth as much as possible, so that the winding is more evenly stressed, and when pressing down, the side rollers are also linked to approach the side of the extruded winding, and when the bottom roller and the top roller roll the top and bottom of the winding, the side rollers also roll the side of the winding, so as to ensure the flatness of the side of the winding, so that the winding is pressed more compactly.

The invention discloses an unattended tertiary oil recovery injection allocation system. A produced water treatment module receives oil well produced water, treats the oil well produced water and then provides softened water for a system; the dry powder dispersing, dissolving and curing module is used for mixing polymer dry powder with softened water treated by the produced water treatment module to form a polymer mother solution and curing the polymer mother solution; the liquid medicament storage and feeding module is used for storing, preparing and accurately adding liquid medicaments such as surfactants and bactericides; the mother liquor feeding and watering module conveys the polymer mother liquor to the injection module at a constant pressure, and meanwhile, softened water and a surfactant target solution in a set proportion are doped; the injection module mixes a polymer solution, water and an agent provided by the mother liquor feeding and watering module and then injects the mixture into the stratum at constant pressure; and the monitoring communication module controls the injection allocation system through the PLC. The system has the beneficial effects that the whole production process is automatically operated under the scheduling of the monitoring communication module, the operation state of corresponding equipment can be timely adjusted in case of special situations, the management efficiency is improved, and the maintenance cost is reduced.

The invention provides a robust control automatic setting method for a constant-pressure water supply system, and the method comprises the steps: obtaining a system working condition in real time, and extracting multi-dimensional state parameters including real-time flow, pressure deviation, current deviation and power deviation; the current load working condition is judged according to the pressure deviation, disturbance characteristics are analyzed by integrating all parameters, and the disturbance grade and type are determined. On the basis, robust control parameters are automatically set in combination with real-time working conditions, load conditions and disturbance characteristics of the system. And finally, performing multi-stage cooperative control on the system by using the set parameters, so that the constant-pressure water supply system is automatically set. According to the robust control automatic setting method for the constant-pressure water supply system, load working conditions and disturbance characteristics are recognized based on multi-dimensional state parameters, robust control parameters are self-set in a targeted mode, and automatic setting of the constant-pressure water supply system is achieved through multi-stage cooperative control. Therefore, the intelligent level of the constant-pressure water supply system and the adaptability in different operation environments are effectively improved.

The invention discloses a clamping and positioning tool and a using method thereof.The clamping and positioning tool comprises a driving mechanism, a clamping mechanism and a base, the base is fixedly arranged at the top of the driving mechanism, the clamping mechanism comprises a sliding part and two symmetrically-arranged clamping assemblies, and the base is located between the two clamping assemblies; the two clamping assemblies can get close to and / or get away from each other in the length direction of the sliding part, each clamping assembly comprises a clamping plate and a plurality of extending parts arranged in the length direction of the clamping plate at intervals, and each extending part can stretch out or retract in the thickness direction of the clamping plate; the driving mechanism comprises an oil storage tank, a push-pull assembly, a first pipeline assembly, a second pipeline assembly, a third pipeline assembly and a fourth pipeline assembly, hydraulic oil is stored in the oil storage tank, one end of the push-pull assembly is rotationally connected with the bottom face of the base, and the push-pull assembly is used for driving the base to move in the vertical direction. According to the clamping and positioning tool, pressure does not need to be applied all the time, operation is easy, clamping stability is good, and special-shaped parts can be clamped.

The invention relates to the technical field of bearing rigidity detection, and discloses a bearing rigidity testing device, which comprises a fixed seat sleeve, the driving part is used for providing rotation power for the to-be-tested bearing; a twisting assembly; the detection assembly is used for detecting the rigidity change of the bearing under the condition that the bearing bears constant pressure in multiple directions; and the driving piece is connected with the bearing through a twisting assembly. According to the bearing rigidity testing device, certain pressure can be applied to multi-directional positions of the bearing through the arranged detection assembly, large-range wrapping and pressing on the bearing can be achieved through the arrangement of the testing piece, meanwhile, pressing on the one-way position can also be achieved, and therefore the actual complex working condition of the bearing is simulated; and then the display device is used for marking and recording the deformation parameters of the bearing, so that the rigid change form of the bearing in a complex environment can be directly displayed, detection personnel can observe the rigid change form, and finally the accuracy of bearing detection is improved.

The invention discloses a combustible liquid limit oxygen concentration testing device and method, and the device comprises an electrolyte supply system which comprises a height-adjustable placement platform and a constant-pressure liquid supply module; the combustion system comprises a base and a combustion tube, a partition plate is fixedly connected to the middle position in the combustion tube, an ignition module is detachably connected to the center position of the top face of the partition plate, a lampwick tube is arranged in the ignition module, a lampwick is arranged at the top end of the lampwick tube, and rectification modules are arranged on the top face of the partition plate and the inner bottom of the combustion tube correspondingly; an experimental darkroom is mounted on the top surface of the base; a gas inlet pipe is mounted at the bottom of the combustion pipe; the gas distribution system is connected with the control system; the optical measurement and analysis system is mounted in the experimental darkroom; a waste liquid recovery module is installed at the bottom of the base. A discharge pipe is installed at the bottom of the combustion pipe. The constant-pressure liquid supply module can ensure that electrolyte with stable pressure is provided for the lampwick tube, and the accuracy and repeatability of a test result are ensured.

The utility model provides an intelligent operating system of paper deacidification equipment, which relates to the technical field of paper deacidification and comprises a paper preparation part, a paper storage part and a paper deacidification part, the deacidification part is used for supplying deacidification liquid through a deacidification liquid processing device, a constant-pressure quantitative module is used for controlling the dosage and the pressure intensity of the deacidification liquid, a spray head is fixed on a planar motion module to spray the deacidification liquid to the paper, and a negative-pressure base is used for adsorbing the paper; the drying part comprises a heating device and is used for increasing the paper drying speed and improving the drying efficiency; the carrying part comprises a mechanical arm, a paper support clamp and a suction cup and is used for transferring the paper support and the paper; the paper preparation part, the deacidification part and the drying part are arranged around the carrying part, and the working area is located within the movement range of the mechanical arm so that reuse of the mechanical arm can be achieved. According to the utility model, high-efficiency and high-quality deacidification can be realized, the integrated operation of paper taking, deacidification and paper conveying is realized by the same mechanical arm, the working efficiency is improved, and the mechanical damage to paper is reduced.

The invention relates to the technical field of oil development, in particular to a shale oil and gas fracturing sliding sleeve capable of being opened and closed repeatedly and a using method. According to the technical scheme, a central pipe fracturing liquid inlet is formed in the upper side of a central pipe, and a reversing rail is arranged on the surface of the outer wall of the middle; a sealing cylinder sleeve and a one-way circulating valve carrier are sleeved outside the central pipe, a fracturing piston, a swivel pressing cap and a reset spring are installed in an annulus, a constant-pressure opening cavity is formed in the inner wall of the fracturing piston, a swivel is installed in the swivel pressing cap, a track pin is installed in the swivel, and the position is moved along a reversing track on the surface of the outer wall of the central pipe through the track pin. The fracturing piston moves downwards to the position of the cylinder sleeve fracturing liquid outlet under the action of pressure, the fracturing function is started, fracturing liquid is sprayed out along the cylinder sleeve fracturing liquid outlet to enter a target fracturing layer, fracturing construction of a plurality of fracturing layers can be achieved through multiple times of fracturing liquid injection and injection stopping, the fracturing sliding sleeve can be repeatedly opened and closed, and the fracturing construction efficiency is improved. And fracturing construction requirements of shale oil and gas with different layers can be met.

The invention relates to the technical field of exploration and development of unconventional oil and gas reservoirs, in particular to an experimental device and method for quantitatively evaluating CO2-hydrocarbon-water interaction mixing and dissolving capacity of a water-containing gas reservoir. The experimental device comprises a vacuum pump, a constant-temperature air bath box, a sample preparation unit, an injection unit, a testing unit and a metering unit. The method comprises the following steps: injecting excessive pure CH4 into a sample preparation unit at a constant pressure, enabling a two-phase system of the pure CH4 and formation water to reach hydrocarbon-water phase balance, transferring the formation water of saturated hydrocarbon into a visual phase tester, injecting CO2 into the visual phase tester at a constant pressure, fully stirring fluid, standing for a period of time, carrying out ion chromatography analysis, and determining the content of CO2 in the formation water. According to the experimental device, the proportion of CO2 and the proportion of CH4 in undissolved gas are determined, an experiment is carried out through the experimental device, a CO2-hydrocarbon-water interaction miscibility theory system in the whole CO2 injection and burying process of the gas reservoir with water can be perfected, and the problem that the miscibility of CO2-CH4 in the CO2-hydrocarbon-water system under the high-temperature and high-pressure conditions is difficult to effectively and quantitatively evaluate is effectively solved.

The invention relates to an automatic press-fitting system for a rotor and a spline shaft, which is characterized in that a laser sensor is used for detecting the reflected light intensity difference of a tooth crest and a tooth groove, and a PLC (Programmable Logic Controller) calculates the angular deviation of the spline shaft in real time based on a difference signal and generates a rotation instruction; after receiving the instruction, the servo motor drives the spline shaft to adjust at a certain increment angle; the suction cup tool sucks the rotor end face through a vacuum suction cup and moves to the position coaxial with the spline shaft; and the servo press drives the rotor to press with constant pressure, the PLC synchronously analyzes the press-in force and displacement, when the displacement reaches a preset range, it is judged that meshing succeeds, and when the displacement does not reach the preset range, it is judged that tooth crest interference occurs, and a reverse rotation correction process is triggered. The system can realize high-precision angle detection and dynamic correction, improves the one-time success rate of engagement of the spline shaft and the rotor, is suitable for precision assembly scenes such as a new energy automobile electric drive system and an industrial speed reducer, effectively reduces the manual intervention cost, and improves the production takt time stability.

The utility model discloses energy-saving full-automatic variable-frequency constant-pressure water supply equipment, which relates to the technical field of water supply equipment and comprises a pressure tank, a water inlet flange is fixedly arranged at the top end of the pressure tank, a water outlet pipe is fixedly arranged at the bottom end of the pressure tank, and an extension pipe is fixedly arranged at one end of the water outlet pipe. And a plurality of water pumps are arranged on one side of the pressure tank. The pressure tank and the water pump are arranged and connected in series, the water pump can pressurize water in the pressure tank in the water supply process so as to ensure that the water pressure of a pipe network is constant, and the filter screen is arranged in the pressure tank and is of a C-shaped structure, so that the water pressure of the pipe network is kept constant in the water filtering process. Impurities can be collected in the filter screen, so that the filter screen is convenient to disassemble and clean, and the design of the C-shaped structure can prevent the impurities from falling off in the disassembly process of the filter screen, so that the water quality in the equipment can be prevented from being influenced by the disassembly of the filter screen.