207 results about "Pressure stabilization" patented technology

The application provides a kind of air supply device and control method for biological protection equipment, it is related to biological protection equipment technical field, air supply device includes filter module, refrigeration module, power module, shell module, air supply and connection module, back module and control module, filter module is set at the bottom end of shell module, refrigeration module is divided into first-stage refrigeration and second-stage refrigeration, and is respectively set at the end face of shell module and filter module, most parts of power module and air supply and connection module are set in shell module, back module is set at the back of shell module, control module further includes controller, control panel and sensor, and controller is set at one end of back module.The application realizes air supply dehumidification, air filtration and temperature reduction and pressure stabilization in biological protection equipment through air supply device, and further improves comfort under the premise of ensuring the safety of wearer.

The invention provides a method for generating performance degradation data of a train air braking system. The method comprises the following steps: on the basis of a brake system of a preset model, analyzing three stages of pressure rise, maximum pressure and pressure stability of pressure change of a brake cylinder, and extracting a plurality of typical fault modes; based on an extended random process model with non-monotonicity and independent incremental property, three stages of pressure change of a brake cylinder and multiple typical fault modes are combined, and linear, nonlinear or stepped performance degradation process modeling of the train air brake system is carried out; overlapping normal distribution random noise on a performance degradation track generated by modeling, simulating a control precision error of an actual braking system, and optimizing a performance degradation process model of the train air braking system; and utilizing the train air braking system performance degradation process model to generate train air braking system performance degradation data in batches.

Systems, apparatus, articles of manufacture, and methods are disclosed that include a casing including a first reservoir and a second reservoir, a first passageway to fluidly couple the first reservoir and the second reservoir, a second passageway to fluidly couple the first reservoir and the second reservoir, the second passageway separate from the first passageway, and a breather tube at least partially positioned in the first reservoir, the breather tube to fluidly couple the first reservoir and the second reservoir via the second passageway.

This utility model discloses an energy-saving compressed air supply system, including a centrifugal compressor unit with a first flow rate adjustment range; a variable frequency screw compressor unit with a second flow rate adjustment range; a compression heat regeneration adsorption drying system, the inlet of which is connected to the outlet of the centrifugal compressor unit; a freeze drying system, the inlet of which is connected to the outlet of the variable frequency screw compressor unit; a main air supply pipe, the outlets of the compression heat regeneration adsorption drying system and the freeze drying system are both connected to the main air supply pipe; and a monitoring and control system, including a pressure sensor, a flow meter, and a controller. Its advantages include the ability to achieve wide-range continuous air supply adjustment, full utilization of compression waste heat, significant reduction in system energy consumption, and provision of high-quality compressed air with stable pressure.

The application discloses a layered collaborative control method for auxiliary deaerator pressure stabilization of a molten salt steam generator, builds an auxiliary optimization control layer on the original coordination control system of the unit, and forms a layered collaborative architecture of "MPC optimization decision-CCS execution tracking". The upper layer calculates and rolls over the optimal set values of the molten salt steam pressure, the deaerator pressure and the feedwater temperature in real time based on model predictive control (MPC); the lower layer realizes fast and stable tracking of the set values through three control loops of cascade-ratio control, three-impulse collaborative control and PID control embedded in CCS, and is seamlessly coordinated with the original feedwater and combustion control logic of the unit. The application effectively solves the problems of multivariable strong coupling, large response inertia and strong mode switching impact of the coal-molten salt coupling system in deep load regulation, significantly improves the load response speed, operation safety and low-load economy of the unit, and enhances the accommodation capacity of the power system to new energy.

The utility model relates to a kind of intelligent insufflator with air pressure stabilization and heating function, comprising: shell, the shell is equipped with: buffer chamber, the buffer chamber is equipped with: first air inlet and first air outlet, first air inlet with the first air outlet between is equipped with: gas passage, the gas passage includes sequentially communicated: first channel, second channel, third channel and fourth channel, the bottom of the buffer chamber is also equipped with: heating pad.The utility model of a kind of intelligent insufflator with air pressure stabilization and heating function is heated to the gas in buffer chamber by the heating pad of setting in the bottom of buffer chamber, and by setting gas passage, the speed of gas advancing can be slowed down, it is favorable to the air pressure stabilization of stabilizing gas, and by the heat conduction of the bottom of buffer chamber, the situation that gas is directly heated and leads to temperature excessive increase can be avoided.

The application relates to the technical field of pipeline dredging, and particularly discloses a flushing and twisting type waterwork pressure measuring pipe silt blocking and cleaning device and a silt cleaning method, which comprises a fixed chassis, the top of the fixed chassis is provided with an annular opening structure, and movable universal wheels are arranged at the bottom of the fixed chassis; the top of the fixed chassis is fixedly connected with a supporting mechanism; a first fixed plate is fixedly connected with a booster delivery pump at the top; and a first connecting pipe is connected with the water outlet of the booster delivery pump. The silt cleaning mode combining cutting and twisting with high-pressure flushing is adopted, the silt cleaning efficiency is greatly improved, the connecting assembly is arranged, quick disassembly and sealing are realized, the pressure stability is guaranteed without loss, the pressure leakage is avoided to affect the silt cleaning efficiency, the supporting mechanism is arranged, accurate limiting and protection are provided for silt cleaning operation, and the operation stability and safety are improved.

The application discloses a fresh water pump with noise reduction and vibration reduction, and relates to the technical field of fresh water pumps.The fresh water pump comprises a driving assembly, a pump body, a secondary impeller, a primary impeller, a steam elimination shell, a floating compensation assembly and a flow slowing assembly.The steady flow channel formed by the inner wall of the floating ring and the secondary rectification through the rectifier grid make the fresh water after flow slowing and pressure reduction further be guided to a relatively stable flow state, so that the deflection, rotational flow and local turbulence of the water flow before entering the primary impeller are reduced, and the vibration and noise caused by the unstable inlet flow state are reduced.When the primary impeller and the secondary impeller accelerate rotation and cause the instantaneous increase of the suction demand at the suction inlet of the pump body, the floating ring can slide towards the pump body under the action of the pressure difference, the blocking section is gradually separated from the compensation inlet, the compensation outlet and the compensation inlet are overlapped and communicated, and the fresh water in the compensation cavity is supplemented into the steady flow channel.The instantaneous low pressure in the steady flow channel is compensated, and the pressure stability of the front end of the suction inlet of the pump body is improved.

This patent provides an integrated steam treatment system and method for filter rod forming equipment, belonging to the field of filter rod processing technology. The system includes: an integrated frame with a skid-mounted structure; a primary treatment module located within the frame, having a gas-liquid separation component and a condensate drain outlet; a pressure regulating module located within the frame, connected to the outlet of the primary treatment module and maintaining downstream pressure stability; a secondary treatment module located within the frame, with its outlet being a large-diameter steam interface; a condensate management module located within the frame, connected to the condensate drain outlets of the primary and / or secondary treatment modules; and a control unit that communicates with each module and automatically adjusts the heating power based on steam temperature feedback. Through the high integration of multi-stage heating, intermediate pressure stabilization, large-diameter output, and intelligent control, ordinary steam is converted into high-dryness, high-stability superheated steam, significantly improving the filter rod forming quality and production efficiency.

This invention discloses a multifunctional self-inflating live fish preservation and emergency rescue storage bag, belonging to the fields of daily storage, aquatic product transportation, and public safety emergency technology. Addressing industry pain points such as the limited functionality of existing equipment, the inability to readily carry rescue gear, the lack of lightweight drowning prevention equipment in primary and secondary schools, the reliance of traditional live fish bags on external devices, insufficient disclosure of technical solutions, and the lack of quantitative performance support, this invention employs a built-in negative pressure self-inflating capsule combined with a one-way pressure regulating valve and a roll-up buckle sealing structure. It defines complete material parameters, negative pressure parameters, pressure stabilization threshold, and buoyancy performance parameters, achieving integrated switching between three cross-domain functions: daily waterproof storage, long-term oxygen-preserving transportation of live fish without equipment, and emergency buoyancy rescue in aquatic environments. Actual testing shows that this invention improves inflation efficiency by over 85%, increases live fish survival time by 200%, reduces leakage rate to 0%, and provides stable buoyancy support for self-rescue by teenagers. This invention breaks through the functional and scenario limitations of existing technologies. The solution is complete, mass-producible, and reproducible. It can be carried by the general public, especially primary and secondary school students, on a regular basis. After its popularization, it can significantly reduce the risk of drowning accidents. It is in line with the policy orientation of campus drowning prevention and safety. It has significant industrial innovation value and social public safety value. It is highly creative, extremely practical, and has broad prospects for promotion.

The utility model discloses a kind of slurry flow control system for shield machine and shield machine with it, comprising: the slurry cabin of being laid in the shield body of shield machine, and the transition cabin, grouting system and slurry discharge system of being laid outside shield machine, and air pressure control system. Transition cabin is equipped with liquid level detector for detecting the liquid level in it and first pressure detector for detecting the pressure in it, and transition cabin is connected with air pressure control system to adjust the air pressure in it, and transition cabin is also connected with slurry cabin, to control slurry cabin pressure by slurry pressure and air pressure in transition cabin, and then make slurry cabin pressure match face water and soil pressure. Transition cabin and slurry cabin are also connected with grouting system to inject slurry respectively, and slurry cabin is also connected with slurry discharge system to discharge slurry outward. The new system can ensure the stability of liquid level and air pressure in transition cabin, and then control the stability of slurry cabin pressure, so that slurry cabin pressure matches face water and soil pressure.

The application discloses a kind of highway side slope water expansion crack blasting removal dangerous rock construction methods, belong to geological disaster prevention technical field;It first uses total station to measure and loft dangerous rock mass of side slope, calibrates dangerous rock removal range, installs active protection net, drilling hole position and water expansion crack equipment installation platform position;Then erect drilling operation platform and carry out drilling construction, after drilling is completed, clear hole, check hole;Then install water expansion crack ware, connect high pressure pipeline system;Afterwards, start high pressure pump station, slowly inject water into water expansion crack ware and pressurize, according to the operation procedure of grading pressurization, pressure stabilization, pressure release, make dangerous rock mass crack and break along design surface;Again, dangerous rock that has been expanded and cracked is cleaned, and is removed out of slope surface;Finally, dangerous rock rock debris is transported to designated spoil ground.The application makes rock mass orderly break along preset surface under the condition of no flying stone, no vibration, no dust, and is suitable for high side slope dangerous rock removal, highway side slope danger removal and other projects.

The utility model discloses a two-piece type tubeless self-sealing wheel, characterized in that: including tubeless pneumatic tire body, with the hub of tire body adaptation connection, set up at tire body and the hub one side junction place's bead seat and the pneumatic rod of penetrating the hub, tire body's bead part integral moulding has a plurality of with the ring -like distribution of bead seat and the sealed connection of hub O -ring, the utility model discloses the setting of annular O -ring, O -ring and the hook portion of bead seat, the fixed part sealed surface of hub close adhesion, utilize the elastic deformation of O -ring to fill the gap, form sealed structure, simultaneously hook portion both sides edge resist O -ring circumference, force O -ring to produce radial elastic deformation, further enhance sealed density, effectively prevent tire body air leakage, satisfy the self -sealing demand of tubeless wheel, guarantee the pressure stability of wheel internal air cavity, improved the driving safety and stability, reduced the manufacturing and maintenance cost of inner tube, with good economic benefits.

This application provides a compressed air supply mechanism, belonging to the field of eddy current testing technology, which can improve the pressure stability of the supplied compressed air, as well as the stability and accuracy of eddy current test results, and improve testing efficiency. The compressed air supply mechanism includes a supply pipeline, a compressor, a series-connected air storage unit, a multi-stage gradient filtration unit, and a multi-stage drying unit. The series-connected air storage unit is used to store the compressed air supplied by the compressor, precipitate impurities in the compressed air, and stabilize the pressure of the compressed air. The multi-stage gradient filtration unit includes multiple filtration modules and is used to further remove impurities and moisture from the compressed air. The multi-stage drying unit includes multiple drying modules and is used to remove moisture from the compressed air. The filtration modules, drying modules, and series-connected air storage unit are arranged alternately to enhance the filtration effect. This application also provides an eddy current testing system.

The application discloses a kind of electric car power running system and method based on electrical control, it is related to electric car technical field, including electric control hydraulic subsystem, trailer hook device and control unit.In the application, when the traction hook is stressed, it will pull the poking component, the round boss in poking component pokes travel switch, travel switch converts mechanical signal into electrical signal and transmits to control unit, and control unit controls electric control hydraulic subsystem operation according to the electrical signal received, to realize the intelligent release and recovery of axle brake, this way avoids the complex pipeline arrangement in hydraulic control, can realize trailer function in minimum space, it is convenient to access whole vehicle electrical system to realize real-time display alarm, less fault is convenient to overhaul, accumulator cooperates with pressure switch to make system energy saving and pressure stable, it can also be perfectly combined with original vehicle braking system, and do not affect each other.

The application discloses a kind of steam pressure stabilizing control method and system of thermal power plant boiler, it is related to thermal power plant thermal automation control technical field, method includes: obtaining the matrix of thermal power plant multi-boiler real-time data, establishes global optimization model with pressure fluctuation degree etc as target, unit regulation coupling degree as constraint, generates initial strategy;It is deviated by evaluation system, and if it is over threshold, then optimize, send command to execute, realize the coordinated control of multiple boilers and stable pressure.This application solves the technical problem that traditional control technology does not fully consider the regulation and control coupling relationship between multiple boilers in thermal power plant, it is difficult to balance pressure fluctuation, energy efficiency and response time delay, leading to insufficient steam pressure stability, unable to meet the precise control demand under complex working conditions, achieves the technical effect that fully considers the regulation and control coupling relationship between boilers, balances pressure fluctuation, energy efficiency and response time delay, realizes the stable and precise control of steam pressure under complex working conditions.

This utility model discloses an instrument fracturing detection device, relating to the field of instrument fracturing detection. The instrument fracturing detection device includes a base, and further includes: a detection cylinder, fixedly mounted on the base, wherein a sliding piston disc is installed inside the detection cylinder, a pressure sensor is provided on the inner wall of the lower end of the detection cylinder, and a connecting pipe is fixedly connected to the detection cylinder; a gas supply pipe connected to the detection cylinder; and an instrument body detachably connected to the output end of the connecting pipe, wherein a sealing gasket is provided on the output end of the connecting pipe, and a fastening ring abutting against the sealing gasket is fixedly installed on the instrument body. This utility model, through a multi-seal structure of sealing gasket, air bladder, and sealing groove, greatly prevents gas leakage from the gap at the connection between the instrument body and the connecting pipe during detection, ensuring stable pressure during the detection process and ensuring detection accuracy.

This disclosure relates to the field of water supply testing and provides a test water supply system, including: a water supply pipeline, the water supply pipeline including a first water supply pipeline and a second water supply pipeline connected to the first water supply pipeline, the first water supply pipeline and the second water supply pipeline being connected by a connecting pipeline; a constant pressure and constant flow component, including a pressure transmitter and a bipolar booster pump installed on the connecting pipeline. This invention has the following advantages: by setting a pressure transmitter and a bipolar booster pump on the connecting pipeline, real-time monitoring and rapid compensation of the pressure within the water supply pipeline are achieved. When the test scenario requires instantaneous pressure stabilization or rapid switching, the pressure transmitter can instantly feed back the pressure signal. Combined with the rapid action characteristics of the bipolar booster pump, the pressure regulation response time is significantly shortened, effectively avoiding pressure overshoot and low-frequency oscillation caused by actuator lag, thereby ensuring the repeatability and data comparability of the impact test waveform.

The utility model discloses a double-pipeline centralized gas supply system of a ball mill. The system consists of at least one ball mill unit, a gas source system unit, a main pipeline unit, a branch pipeline unit and a PLC (Programmable Logic Controller), the air source system unit supplies air to a pneumatic clutch and a gear lubricating device in the ball mill unit; the system comprises a first air compressor, a second air compressor and a third air compressor, the first air compressor is connected with a first air storage tank through a first air source pipeline, the first air source pipeline is connected with a first pressure transmitter and a first electric ball valve, and the second air compressor is connected with a second air storage tank through a second air source pipeline. A second air source pipeline is connected with a second pressure transmitter and a second electric ball valve, and a third air compressor is connected with a third pressure transmitter; and the PLC is connected with each electric control component in the gas source system unit and the branch pipeline unit through cables. The utility model has the advantages of compact arrangement of connecting pipelines, high air supply efficiency, obvious energy-saving effect and good pressure stabilizing effect, and can ensure the efficient and stable operation of the ball mill.

This invention relates to the technical field of oil production engineering, and more particularly to a control method for closed-loop pressure monitoring and adjustment of intelligent injection wells. The method includes: identifying a target intelligent well; obtaining and labeling the number of layers in the target intelligent well; detecting and recording the real-time single-layer water injection volume of each layer; dividing each layer into a target layer and multiple non-target layers based on the real-time single-layer water injection volume; obtaining the injection pressure of the target layer by monitoring and adjusting the target layer; obtaining the monitoring and adjustment pressure from the target layer injection pressure; inputting the monitoring and adjustment pressure into a constant pressure control valve; controlling the monitoring and adjustment pressure to stabilize the pressure through the constant pressure control valve; monitoring and adjusting the water injection volume of each non-target layer; detecting the water injection volume of the target intelligent well after monitoring and adjustment, until the single-layer water injection volume of each layer of the target intelligent well meets the injection requirements, thus completing the monitoring and adjustment. The method provided by this invention eliminates inter-layer interference during monitoring and adjustment, adjusts unqualified layers on a single layer, and realizes remote monitoring and adjustment of intelligent injection wells.

This invention discloses an intelligent milling machine tool and method for spring processing, relating to the field of intelligent spring processing technology. It includes a milling power head and a worktable mounted on a frame, with the milling power head positioned above the worktable. A pulse chip removal mechanism is installed on the worktable, comprising a positioning sleeve, a directional nozzle assembly, a high-frequency pulse solenoid valve, and a cutting fluid pressure stabilization supply mechanism. This invention, by setting up a pulse chip removal mechanism and regulating the cutting fluid pressure through the cutting fluid pressure stabilization supply mechanism, achieves millisecond-level on / off switching of the cutting fluid via the high-frequency pulse solenoid valve. This causes the directional nozzle assembly to spray pulsed cutting fluid along the spring's spiral direction, forming a jet that penetrates the narrow spiral slit structure of the spring to remove chips. Combined with the outlet pipe at the bottom of the positioning sleeve, this achieves rapid discharge of chips and cutting fluid, thoroughly removing fine chips from the narrow spiral slit of the spring while avoiding the impact of the cutting fluid on low-rigidity springs, thus improving the accuracy and quality of spring end leveling processing.

This invention discloses an energy-saving operation method for hydraulic motors based on pressure detection and energy replenishment, specifically relating to the field of energy-saving control. The method includes: firstly, collecting, filtering, and preprocessing multiple operating parameters of the hydraulic system and drive motor using time synchronization; then constructing a dimensionless characteristic function from multiple dimensions and achieving nonlinear fusion through adaptive weight allocation to obtain a comprehensive state coupling value; constructing a pressure advance prediction model based on historical data, and performing consistency verification and confidence analysis on the comprehensive state and predicted state; using the comprehensive state coupling value, pressure prediction value, and confidence value as inputs, employing fuzzy logic reasoning to output motor speed and accumulator valve group control commands, ultimately driving the actuator and transmitting the operating parameters back to form a closed loop; this invention improves the system's dynamic response and anti-interference capability, optimizes the motor operating range while ensuring pressure stability, and improves energy utilization, making it suitable for efficient and energy-saving operation of hydraulic systems under complex working conditions.

This invention discloses a high-pressure spraying machine based on an electromagnetic reciprocating linear motor and a plunger pump, comprising an electromagnetic reciprocating linear motor, a plunger pump, a fluid control unit, and a pressure control unit. The power output end of the electromagnetic reciprocating linear motor is rigidly connected to the plunger rod in the plunger pump, directly driving the plunger rod to reciprocate axially. During this reciprocating motion, the plunger rod completes paint intake and high-pressure discharge. The fluid control unit performs paint filtration, pressure stabilization, and spraying on / off control. The pressure control unit collects and outputs pressure signals, and uses a closed-loop adjustment mechanism to regulate motor motion parameters, ensuring constant spraying pressure. This invention achieves integrated direct drive between the motor and the plunger pump. The direct drive structure reduces mechanical losses and improves energy conversion efficiency. The motor directly drives the plunger, resulting in fast pressure response, high control precision, and stable spraying flow. Reduced moving parts lower wear and failure rates, extending maintenance cycles. Reduced vibration and noise result in a more compact structure, adaptable to various spraying scenarios.

The application relates to the technical field of storage tanks, and discloses a storage tank pressure regulating device, which comprises a storage tank, a piston cylinder fixedly installed at the top of the storage tank, an adjusting frame fixedly installed at the top of the piston cylinder, a function box fixedly installed at the top of the storage tank, wherein the function box is located at the right side of the piston cylinder, a same air hole is arranged between the piston cylinder and the storage tank, a piston mechanism is arranged in the piston cylinder, and an adjusting mechanism is arranged on the adjusting frame; a silk dynamic mechanism is arranged in the function box, a cylinder hole is arranged at the right side of the storage tank, and a pressure relief mechanism is arranged in the cylinder hole. The device has the following advantages and effects: the adjusting mechanism is arranged, the pre-tightening force of the spring can be adjusted by rotating the nut on the screw rod, the purpose of flexibly setting the pressure regulating threshold value is achieved, the pressure relief mechanism is arranged, the automatic regulation, real-time monitoring and safe pressure relief of the pressure in the storage tank can be realized, and the purpose of ensuring that the pressure in the storage tank is stably kept in the set range is achieved.

This utility model relates to the field of marine equipment technology and discloses a pressing device for outboard engine cylinder head oil seals. It includes a pressing platform table, a pressing assembly mounted on the pressing platform table, and a pressing limiting assembly. The pressing assembly includes an oil seal pressure head that cooperates with the outboard engine cylinder head oil seal, a pressure plate that presses against the oil seal pressure head, and a pressing cylinder that drives the pressure plate. The pressing limiting assembly includes a force-bearing support plate that cooperates with the outboard engine cylinder head and a set of pressing limiting plates for mounting the force-bearing support plate. The pressing limiting plates are provided with several adjusting limiting grooves for adjusting the position of the force-bearing support plate. This utility model has a simple structure, uses electrical signal control for on / off switching, is easy and simple to use, provides stable pressure, and has high precision. It is compatible with various types of cylinder head oil seals, the equipment is simple to assemble, and it has a high cost-performance ratio. Furthermore, it is convenient to operate, allows for one-button pressing, and improves pressing efficiency.

The present application belongs to the technical field of foundation treatment, and discloses a kind of silt foundation grouting lifting construction method of combined drainage consolidation.Solve the problem of secondary settlement caused by excess pore water pressure dissipation after silt foundation grouting lifting in the prior art.The present application comprises: construction preparation and site investigation;Lay vertical drainage channel, vertical drainage body penetrates silt layer or enters the relatively permeable soil layer below silt layer, and the top end is exposed to the ground;Sand cushion layer is laid on the top end of vertical drainage body or horizontal drainage pipe network is laid;Lay grouting hole, in the area to be lifted, several grouting holes are laid at a predetermined interval, vertical drainage body is located at the center position of grouting hole grid, the depth of grouting hole reaches the design lifting horizon, and grouting pipe is lowered into grouting hole;Pressure grouting lifting and synchronous drainage;Pressure stabilization and maintenance.The present application realizes synchronous and collaborative operation of grouting lifting and drainage consolidation, improves the stability and controllability of lifting effect.

The present application relates to the technical field of industrial carbon emission port monitoring, and specifically relates to an industrial carbon emission port monitoring pretreatment system and a monitoring method, comprising a centrifugal turntable and a fixed disc; the fixed disc and the centrifugal turntable form a flue gas mixing cavity, solid small particles in the flue gas collide to form solid large particles, and the solid large particles are thrown out by the centrifugal turntable; the industrial carbon emission port monitoring method comprises the following steps: S1: two-way gas sampling is performed on flue gas of a carbon emission port; S2: the flowing flue gas is compressed, solid particles are thrown out by centrifugation, and flue gas dust removal is realized; S3: the dust removal gas is introduced into a gas cooling device for cooling; S4: dust removal gas with stable temperature and / or stable pressure and / or stable flow rate is obtained in a monitoring area; and S5: the dust removal gas in S4 is monitored by using a gas monitoring device. The present application can provide a reliable monitoring space for gas monitoring, ensure the accuracy of carbon emission monitoring data, and improve the convenience and safety of the monitoring process.

This invention belongs to the field of melt filtration technology and discloses a filter cylinder and a melt filter. The filter cylinder has a first melt chamber inside a first filter cylinder. At least two guide ribs are arranged circumferentially around the central axis of the first filter cylinder on the inner wall of the first melt chamber. The guide ribs extend in a first direction, and a melt flow channel is formed between adjacent guide ribs. A second filter cylinder has a second melt chamber inside the first filter cylinder. The second filter cylinder is fixedly connected to the first filter cylinder and located within the first melt chamber. An overflow channel for connecting the first and second melt chambers is formed on the peripheral wall of the second filter cylinder. The filter screen is fixedly connected to the second filter cylinder and located within the second melt chamber, which can increase the flow velocity of high-purity melt in the first melt chamber and ensure that the high-purity melt flows uniformly and at a constant speed to the outlet, ensuring stable outlet pressure and preventing the filter cylinder from affecting the operation of downstream process equipment due to pressure fluctuations at the outlet.