129results about How to "Reduce the cost of after-sales service" patented technology

The invention relates to a multifunctional remote fault diagnosis system for an electric control automobile. The multifunctional remote fault diagnosis system comprises a remote fault diagnosis service center, PC (Personal Computer) diagnosis client sides and a diagnosis communication device. The remote fault diagnosis service center serves as a key of the system and is mainly used for realizing an automobile fault diagnosis network management function and an automobile remote fault diagnosis assistance function; the PC diagnosis client sides are mainly used for providing specific automobile diagnosis application functions and remote diagnosis interfaces for users with different rights through human-computer interaction interfaces; and the diagnosis communication device is mainly used for realizing the data communication between the PC diagnosis client sides and a vehicle-mounted network and providing diagnosis data service for upper applications. By means of the multifunctional remote fault diagnosis system, with the remote fault diagnosis service center as a core and all PC diagnosis client sides as nodes, an automobile fault diagnosis network is established; automobile diagnosis data sharing is realized by means of the diagnosis communication device; multifunctional automobile remote fault assistance and fault elimination help can be provided; automobile fault information is subjected to statistic analysis; and a reliable automobile quality report is provided for an automobile manufacturer.

The invention relates to a test method of an MEMS type sensor-micro-accelerometer, in particular to a test method of micro-accelerometer reliability intensifying test. The method can find out the failure mode of the micro-accelerometer under the integrated stress environment of temperature, vibration and wetness, is convenient for product development, and improves the integrated capability of theproduct, comprising the following steps: 1. the intensifying test of the micro-accelerometer under temperature stress; 2. the intensifying test of the micro-accelerometer under the integrated stress of the temperature and the vibration; and 3. the he intensifying test of the micro-accelerometer under the integrated stress of the temperature, the vibration and the wetness. The method considers theaffect of the temperature, the vibration and the wetness to the inner stricture of the micro-accelerometer. By applying three stress-the temperature, the vibration and the wetness to the micro-accelerometer step by step, the method finds out the condition of the three stress before the micro-accelerometer function is invalid and when the micro-accelerometer function is invalid, so as to be convenient for solve the defect of the micro-accelerometer, improve the integrated capability and the reliability of the micro-accelerometer, and is good for developing new products-the micro-accelerometer with high reliability.

The present invention relates to a platform and a usage method thereof, concretely to a public service platform and a usage method thereof. The platform comprises a terminal and a cloud server; the terminal includes a PC terminal and a mobile terminal, wherein the PC terminal and the mobile terminal form a presentation layer; the cloud server includes a logic layer and a data layer; and the data layer, the logic layer and the representation layer form the whole framework of the public service platform, and the whole framework of the public service platform includes two processes of content publishing and order processing. The present invention provides a product display and selling mode similar to a traditional supermarket, and divide a large-scale application business flow management software implementation process with long period, high cost and big risk into a gradually advanced iterative implementation process with short period, low cost and small risk; and moreover, through providing a service platform, the normalized flow correlation product selling, the standardized requirement customization service, standardized order processing and the pre-sales and after-sales service flows, the problem of the traditional offline implementation service of the BPM industrial field is solved, and the cost and risk of supplying to both parties are reduced.

A notebook computer system with a modular function expansion structure and a removable function expansion module comprise a modular removable function expansion module. The modular function expansion module comprises at least one function expansion bin, a removable function expansion module and an electrical interface, wherein the function expansion bin is embedded in a notebook computer mainframe; the removable function expansion module can be inserted in the function expansion bin and work; and the electrical interface is connected with the removable function expansion module and the mainframe. The function expansion bin is of a single-layered or double-layered or three-layered structure; and at least a computer bus communication interface, a battery power supply interface, a data interface and an integrated interface or a combination of the computer bus communication interface, the battery power supply interface, the data interface and the integrated interface are included in the electrical interface of the function expansion bin. The removable function expansion module consists of a function component enwrapped by a shell and a module connector connected with the electrical interface, the outer appearance of the removable function expansion module or the outer appearance of the removable function expansion module after being superimposed and combined is matched with the inside space of the function module expansion bin. The invention has the advantages of stronger function expansion, configuration update and interchange and universal performance and can provide various types of quick switching external interfaces and function expansion.

The invention discloses a wind driven generator speed limiting device, and belongs to the technical field of power equipment. The device consists of a brake disc and a centrifugal brake, wherein the centrifugal brake is arranged in the brake disc and comprises a circular bottom plate and three cambered brake sheets; a connecting shaft groove is formed in the center of the circular bottom plate; the three cambered brake sheets are movably connected to the bottom plate; cambered edges of the three cambered brake sheets form a circle which is concentric with the outer circle of the circular bottom plate; each brake sheet is provided with two through holes respectively; and a tension spring is arranged between two adjacent through holes of two adjacent brake sheets. Through the device, the safety of a product is improved, the mounting, maintenance or replacement is extremely convenient, and after-sales service cost and mounting cost of a manufacturer are greatly reduced; compared with an electronic speed limiting device, the device has a more direct effect, does not depend on the functions of other components and has high stability, and the safety is completely guaranteed; and the device is arranged in a fan without affecting the appearance.

The invention discloses a display module and a rugged tablet personal computer thereof. The display module comprises a panel module unit and an LCD (Light Crystal Display) module unit which are independent mutually, wherein the panel module unit is arranged in front of the LCD module unit and is detachably and fixedly connected with the LCD module unit. The rugged tablet personal computer comprises a host module and a display module, wherein the host module and the display module are independent respectively and are detachably and fixedly connected together; the host module comprises a rear cover and a host unit arranged in the rear cover; the host unit comprises a mainboard, a rigid disk, an IO (Input / Output) interface board, a power source and a power filter; the mainboard is respectively and electrically connected with the IO interface board, the power source and the power filter; and the mainboard is spliced with the IO interface board. The display module provided by the invention is strong in compatibility and easy to maintain and replace. The rugged tablet personal computer has the characteristics of complete computer modularization, high assembling efficiency, easiness for maintaining and replacing and balanced customization and industrialization.

The invention discloses a six-shaft joint mechanical hand and relates to the industry mechanical hand technology. The six-shaft joint mechanical hand comprises a mechanical hand body and a control system; the mechanical hand body is connected with the control system through a data line; the mechanical hand body comprises a base, a first shaft servo motor and a speed reducer thereof, a first shaft rotary shaft, a second shaft base, a lower hand servo cylinder, a lower arm, an upper arm servo cylinder, an upper arm, a fourth shaft rotary shaft, a fifth shaft servo motor and a speed reducer thereof, a fifth shaft rotary base, a sixth shaft rotary shaft and a sixth shaft servo motor and a speed reducer thereof; the control system comprises a programmable controller, a movement control module, a servo driver, an alarming device, a hand box, a touch screen, a limit switch and a sensor. The six-shaft joint mechanical hand has the advantages of achieving six-shaft joint control through the control system, being simple in structure, achieving domestic production, reducing products, shortening the purchasing cycle, being suitable for small and medium businesses to use and high in positioning accuracy, improving the production quality and the production efficiency and having a good application prospect in the industry mechanical hand technology field.

The present invention provides a flame simulating device, which comprises a hexahedron casing, a simulation hearth which is arranged on the middle-front part of the casing, an image formation screen which is arranged in the center place of the inner casing, a dynamical flame shaped light beam producing component arranged behind the image formation screen, and an infrared ray heater with a reflecting cover. The front face of the hexahedron casing is transparent, and directs to the user for looking at the simulated flame; the infrared ray heater uses radiation to transfer the heat, and concentrates the heat. The dynamical flame shaped light beam producing component is a rotating luminous tube, which can produce the flame shaped light beam, the image is formed on the reverse side of the image formation screen, and transmitted on the front surface of the image formation screen, along with the rotating of the luminous tube, the flame shaped image rises slowly as a real flame. Meanwhile, the infrared ray heater transfers the heat by radiation, thereby giving people a real feeling like around the fire place.

A radiating point-type optical fiber smoke-sensitive fire detector comprises a front-end detection part and a background processing part, wherein the front-end detection part comprises a smoke chamber, a transmitting card rack, a receiving card rack, a transmitting optical cable, a receiving optical cable, a transmitting plastic tube and a receiving plastic tube; and the background processing part comprises a light source, a light source modulator and a signal detection processor; the light source is a green LED, the transmitting and the receiving optical cables are communication plastic optical cables, the transmitting plastic tube and the receiving plastic tube are sleeved outside the transmitting and the receiving optical cables, the transmitting and the receiving card racks are sleeved outside the transmitting and the receiving plastic tubes, the end surfaces of both one end of the transmitting optical cable and one end of the receiving optical cable are level with openings at the top ends of the corresponding plastic tubes, the other ends are respectively connected with a light source detection processor and the signal detection processor, and the smoke chamber is covered outside the optical cables, the card racks and the plastic tubes. By adopting the design, electronic components are omitted, the radiating point-type optical fiber smoke-sensitive fire detector is suitable for inflammable and explosive occasions with strong electromagnetic radiation strength, can meet the requirements of fire-fighting alarm products, and has the advantages of high sensitivity, simple structure and low installation and maintenance costs.

The invention discloses a remote monitoring system of a special-shaped pipe steel reinforcement framework seam welder and a monitoring method thereof. The system comprises an OPC server, an SQL server, an intelligent GPRS wireless control terminal, a digital quantity input module I, a digital quantity input module II, an analog quantity input module I, an analog quantity input module II, a pulse counting module and a network camera. The OPC server manages data sent by the intelligent GPRS wireless control terminal to a cloud server. The SQL server manages the data acquired from the OPC server. An MODBUS website is formed by the intelligent GPRS wireless control terminal as an MODBUS master station, the digital quantity input modules, the analog quantity input modules and the pulse counting module, and is responsible for collecting on-site data of the seam welder. The collected on-site data is sent to the cloud server in real time through the intelligent GPRS wireless control terminal. The network camera is responsible for collecting real-time images. According to the remote monitoring system and the monitoring method thereof, the real-time data and video images of the seam welder are synchronously monitored, the real-time running data of the seam welder can be acquired, and image information of the seam welder can be acquired.

The invention discloses an automatic finger-jointed lumber production line controlled by a network system. The production line comprises a main electric control box, a feeding conveying platform, a left hackle tenon tenoning machine, a right hackle tenon tenoning machine, a glue spraying system, a distributing conveying machine, a reversing conveying machine, a pre-tightening conveying machine, a hackle tenon butt joint machine and a safety guard. The main electric control box is connected with each subcontrol box unit by a network wire; a special program software on an industrial control computer unit provided with the main electric control box is used for collecting and processing data and transmitting action command signals to all processing mechanisms and transmitting mechanisms of the automatic finger-jointed lumber production line to realize the automatic production flow of hackle tenon tenoning, hackle tenon glue spraying and hackle tenon butt joint in the finger-jointed lumber production process; and in addition a wireless data transmitting and video monitoring functional module is adopted to realize the remote production-line monitoring and troubleshooting. Therefore, the operation stability and reliability of the automatic finger-jointed lumber production line are improved, the after-sale service cost is reduced, and the processing efficiency of the automatic finger-jointed lumber production line is improved.

The invention discloses a glued groove-and-tongue floor, which comprises a floor body, wherein the floor body is provided with a joint tongue and a joint groove. The glued groove-and-tongue floor is characterized in that: a pressure sensitive glue layer is coated on the joint tongue and / or the joint groove. The glued groove-and-tongue floor has the advantages that: 1, the pressure sensitive glue layer is pre-coated on the joint tongue and / or the joint groove, namely the tongued and grooved positions, of the floor so as to greatly improve a floor gluing mounting process and the mounting efficiency, save time, avoid the surface of the floor being polluted and achieve higher environmental friendliness; 2, adjacent floor blocks can be separated without any damage after being glued and spliced by pressure sensitive glue, so the floor is convenient to disassemble and rearrange after faults are produced in arrangement and pavement, and the after-service cost of the product is reduced; and 3, the adhesive power of the pressure sensitive glue can greatly strengthen an interlocking force between tongues and grooves of the floors and make securer and more stable the splicing of the floor, thereby greatly reducing the problem of contraction joint deformation of the paved floor as well as noises caused by friction between the tongues and grooves of the floors and greatly improving the mounting quality of the floor.

The invention relates to a new skirt frame for gas cylinder of internal combustion engine, which can be fixed at the bottom face of gas cylinder body of internal combustion engine, whose top face is connected with the bottom face of gas cylinder body by sealing structure, whose bottom face is connected with oil collector and oil bottom shell, and which is integrated with the oil pump and back oil sealing cover assembly. It also comprises that reinforced rib set round bolts connected with bearing cap and gas cylinder in it; reinforced rib set at the back end connected with vehicle gearbox out of it. it also comprises a ribbed plate, by which it is integrated, whose thickness is 2. 5-3. 0mm, which is made of aluminum alloy. The invention can ensure the stability of engine, decrease the engine weight, decrease vibration and noise of engine and decrease producing and repairing cost of engine.

The invention discloses a method for performing three-proofing treatment on a circuit board by using ultrasonic waves. The method comprises the steps as follows: 1), ultrasonic cleaning: before coating, a cavitation effect in an ultrasonic liquid is used for changing electric energy into mechanical vibration for generating high-pressure air bubbles, and surface cleaning of the circuit board is completed; 2), drying; 3), covering; 4), dilution; 5), ultrasonic spraying: a three-proofing protection paint is atomized by the aid of an atomization function produced in the liquid through ultrasonic vibration, micron grade tiny droplets are produced, and a dense spraying purpose on the surface of the to-be-treated circuit board is achieved; and 6), curing. The method is reliable and practical, a cured protective film is uniform, the adhesive force is high, the product reliability is improved, and the after-sales service cost is decreased.

The invention relates to a water purification machine capable of automatically flushing the filter element and pipelines and a control method thereof. When in use or in demand for automatic flushing, the water inlet pipeline of the water purification machine is opened, and the water outlet pipeline of the water purification machine is closed, so that the purified water prepared by the water purification machine can be discharged through the wastewater pipeline. The opening or closing of the water inlet pipeline of the water purification machine is implemented by a water inlet valve; and the opening or closing of the water outlet pipeline of the water purification machine is implemented by a water outlet valve. In the process of automatic flushing, both the purified water prepared by the water purification machine and the waste liquid discharged by the waste liquid discharge port of the water purification machine are discharged by the wastewater pipeline. The pipeline between the purified water delivery pipeline of the water purification machine and the wastewater pipeline of the water purification machine is provided with a one-way valve. The water purification machine can flush the filter element and pipelines when being used for the first time, and thus, is convenient and sanitary to operate.

The invention discloses a BBU fault diagnosis method, and the method comprises the steps: firstly judging whether a power supply is normal or not in a process of switching from a main power supply toa target BBU through power supply switching data, and accurately positioning a fault in a switching logic if the power supply is not normal; and if the target BBU is normal, subsequently determining the working state of the target BBU through the hardware signal of the target BBU, determining whether the target BBU is abnormal or not in the operation process based on the working state, and if thetarget BBU is abnormal, further determining a specific abnormal source causing the abnormality through fault simulation so as to perform targeted repair to recover the target BBU to be normal. Throughdeep analysis of the actual operation process of the BBU, all sources possibly causing the BBU fault are judged layer by layer, so that the fault determination accuracy is gradually improved, and theafter-sales service cost is also effectively reduced based on the full-automatic operation process of the machine. The invention further discloses a BBU fault diagnosis device, electronic equipment and a readable storage medium, which have the above beneficial effects.

The invention relates to the technical field of boiler soot blowing equipment, in particular to an air curtain system for shock wave soot blowing. The air curtain system for shock wave soot blowing comprises an air pipeline system and an air curtain device; an air outlet of the air pipeline system is connected with an air inlet of the air curtain device to supply air to the air curtain device, the air curtain device is arranged at a nozzle of a shock wave generator, and the air curtain device enables the sprayed air to form an air curtain in the nozzle of the shock wave generator. According to the air curtain system for shock wave soot blowing, through the air curtain device arranged at the nozzle of the shock wave generator, the sprayed air can form an air barrier in the nozzle of the shock wave generator, corrosive fume in a furnace is prevented from flowing backwards into the shock wave generator and corresponding pipelines and parts of the shock wave generator, therefore, the safety of a whole shock wave soot blowing system is guaranteed, and the stability, reliability and safety of the shock wave soot blowing system are guaranteed.

The invention discloses an embedded system on-line program refreshing method. The method includes the steps: placing a starting program, an application program and effective markers into a racetrack memory of an embedded system; firstly executing the starting program after the embedded system resets, reading values of the effective markers by the starting program, judging whether a current application program is effective or not, entering and continuously running the application program if the application program is effective, entering a refreshing state and establishing communication with an external device if not, and downloading refreshing subprograms from the external device; storing the downloaded refreshing subprograms into the racetrack memory, downloading application programs needing to be refreshed from the external device after the subprograms are downloaded, circularly calling and refreshing the subprograms, and flushing data of each downloaded application program needing to be refreshed into a designated address of the racetrack memory. By the method, software of the embedded system can be updated in an online refreshing manner, a software program is improved, and excessive product cost increase is avoided.

The invention discloses a reflective point type optical-fiber smoke-sensitive fire detector. The reflective point type optical-fiber smoke-sensitive fire detector comprises a front-end detecting part and a background processing part, wherein the front-end detecting part comprises a smoke chamber, a transmitting card frame, a reflecting card frame, a reflecting film, a transmitting optical cable, a receiving optical cable and a hard plastic pipe; the background processing part comprises a light source, a light source modulator and a signal detection processor; the light source is a green-light LED (Light-Emitting Diode); the transmitting optical cable and the receiving optical cable are communication level plastic optical cables; the transmitting optical cable and the receiving optical cable are arranged in the hard plastic pipe, and the transmitting card frame is arranged outside the hard plastic pipe; one end of the transmitting optical cable and one end of the receiving optical cable are level to an opening of the top end of the hard plastic pipe, and the other ends of the transmitting optical cable and the receiving optical cable are respectively connected with the light source and the signal detection processor; the reflecting film is arranged at the side surface of the reflecting card frame; and the transmitting card frame, the reflecting card frame and the hard plastic pipe are externally covered with the same smoke chamber. The design disclosed by the invention not only avoids using of electronic components and is applicable to places with inflammables and explosives and large electromagnetic radiation strength, but also can meet the requirement of a fire-fighting alarm product, and is high in sensitivity, simple in structure and low in installation and maintenance cost.

The invention discloses an automatic driving scene information collection and remote upgrading method and system, and relates to the technical field of automobiles. When a driver finds a fault, a trigger signal is sent out by a manual key or an automatic driving system reports the fault signal, automatic driving scene information collection is triggered, field driving scenes within a period of time before and after the trigger signal are collected, the driving scenes are classified, fault reason analysis is carried out, and the scenes are uploaded to a cloud server. And meanwhile, research anddevelopment personnel repair the automatic driving system by analyzing the scene, and the automatic driving system can be remotely upgraded through the device so as to process reported faults, so that the user experience is greatly improved, and the after-sales service cost is reduced.

The manufacture method for connector socket comprises: preparing an assembly slot in base, and a row of grooves on base back opposite to two rows of holes, a hook-shaped terminal with bottom as gild contact surface and top as welding leg respectively. Wherein, the terminal bottom inserts in the assembly hole on base with extended part fixed in the slot; in the groove, the front side if inclined plane, the front side is lateral plane to limit the lateral position of terminal, and the bottom is floor plane to limit the back positionof middle terminal; a set of automatic temperature control fixture heats and forces the bossing part of groove to disfrom and pack the middle terminal in the slot. This invention improves product reliability, and reduces the manufacture cost.

The invention relates to the technical field of direct current blowers, and discloses an automatic recognition method and device for a direct current blower type. The automatic recognition method of the direct current blower comprises the steps that after a power supply system of the direct current blower is electrified, a preset frequency signal output from an FG signal end of an electromotor chip of the direct current blower is acquired when a PWM signal is not received from a PWM signal end of the direct current blower, and the type of the direct current blower is judged according to the frequency of the preset frequency signal output from the FG signal end of the electromotor chip of the direct current blower, so that the phenomenon that one type of the direct current blower is selected by manually operating a dial switch or making a key option is avoided, thereby reducing the hardware circuit cost of a main controller of a gas water heater and improving the reliability of the gas water heater, and reducing the manufacturing cost and after-sale service cost of the gas water heater. In addition, by the automatic recognition method of the direct current blower, the gas water heater can use different types of direct current blowers supplied by different suppliers, so that the cost of the gas water heater is reduced.

An embodiment of the invention discloses an LED lamp driving power test method. The LED lamp driving power test method comprises the steps of simulating various open circuit states of an LED driving power; conducting an open circuit test on the LED driving power; and passing the test if the performance of the driving power is detected to be normal under the various open circuit states. According to the invention, the LED lamp driving power test method can be used for testing whether the open states of the LED lamp driving power would result in damage to the driving power at before an LED lamp leaves the factory, unqualified LED lamps can be prevented from entering the market, and the after-sales service cost is reduced.

The invention relates to a horizontal linear fatigue test machine. The horizontal linear fatigue test machine includes: a cabinet, the top surface of which is an open type structure; a substrate, which is a frame structure and is disposed at the upper part inside the cabinet; two pairs of guide rails and sliding blocks, with the two pairs of guide rails being arranged on two side frames of the substrate skeleton; a cross beam, which has the bottom surface's two sides connected to the upper end faces of the sliding blocks, and is equipped with a plurality of through-holes at interval, with a ball socket support plate disposed at the upper part in the cabinet; a screw rod and an upper nut thereof, wherein the screw rod is disposed at the center of the substrate and has two ends connected tothe front frame center and rear frame center of the substrate through support seats, and the nut is disposed at the bottom surface center of the cross beam; a servo motor, which is disposed outside the substrate front frame center and is connected to the screw rod; several drive devices, which are in one-to-one correspondence to the through-holes of the cross beam, have cylinder body front end faces connected to one sides of the cross beam's through-holes, and have the output ends equipped with ball socket blocks; a force sensor, which is disposed on the ball socket support plate; a linear displacement sensor, which is disposed on one side of the cabinet inner side wall; and a controller. The horizontal linear fatigue test machine provided by the invention can test the fatigue performanceof a plurality of electric stay bars of different types simultaneously.

The invention discloses a light rail soil residue vehicle. The light rail soil residue vehicle comprises a residue bucket, an underframe, a walking part and an air braking system, wherein the residue bucket is symmetrical with respect to the center line. Lifting shafts and rotating shafts are positioned at two ends of the residue bucket, the central connection line of the two lifting shafts and the center line of the residue bucket coincide, and the central connection lines of the two rotating shafts are located on the same side of the center line of the residue bucket. The top surface of the underframe is provided with two positioning plates, the positioning plates are provided with U-shaped grooves, the rotating shafts are placed in the U-shaped grooves, and pull type coupling devices are positioned at two ends of the underframe. The walking part comprises two wheel sets, every wheel set comprises an axle, two wheels and an axle box body, and the underframe is supported on the axle box body through an elastic element. The air braking system comprises four braking units, every braking unit comprises a braking cylinder, a connecting rod and a brake shoe, wherein the braking cylinder is fixed on the underframe, one end of the connecting rod is pivoted to the underframe, and the other end of the connecting rod is pivoted to a braking cylinder piston rod. The same underframe, the walking part and the air braking system are used for soil residues of various models, kinds of parts are greatly reduced, and the purchase cost, the logistics cost, the manufacturing cost and the after-sale service cost are greatly reduced.

Disclosed is a switchboard monitoring and management device that is used to provide remote distance monitoring of the operation situation of an electric switch. The device comprises a voltage signal sampling circuit and a current signal sampling circuit that are in connection with an output circuit of the switchboard, and is characterized in that a temperature signal sampling circuit, a switching signal input circuit, a video signal input circuit and an ARM9 processor which is connected with the circuits that are in connection with the output circuit of the switchboard are arranged in the device, the output end of the ARM9 processor connects the device with a central supervisory control computer through a serial communication port of an embedded system or an Ethernet network interface, or connects the device with a cell phone through a GPRS network interface. The invention realizes the timely monitoring of the switchboard through transmission of signals including voltage, current, temperature, switching, video and the like; can automatically give an alarm when fault occurs; meanwhile, manufacturers can help users solve problems remotely so as to effectively reduce after-sale service costs of the manufacturers.

The invention relates to water treatment industry, in particular to purification aspects of drinking water and discloses a box-type water purifier. The box-type water purifier comprises a filter core communicated with a corresponding water gap of a filtering channel, a frame type rack provided with a front side surface and a rear side surface, and a movable side cover plate, wherein the movable side cover plate is in contact fit with the frame type rack and can move fore and aft along the side face edge of the frame type rack; a water channel switcher is also arranged to be a three-plate structure connected between the filtering channel and a water inlet tube and a water outlet tube of the filter core: a middle plate between an upper plate and a lower plate is a movable plate, and is contacted and matched with the upper plate and the lower plate to form a double sealing switching interface, an outfall communicated with a drainage channel is arranged, a water inlet and a water outlet of the upper plate are connected to the filtering channel; the water inlet and the water outlet of the lower plate are communicated with the water inlet and the water outlet of the filter core; the water inlet and the water outlet of the middle plate are respectively joined and communicated with the corresponding water inlets and water outlets of the upper plate and the lower plate, and the outfall of the middle plate corresponds to the water inlet of the lower plate, and is communicated with the water inlet in a back flushing channel.

This invention discloses a method for preparing a replacing material of hydraulic oil for isostatic-pressing molds. The replacing material is prepared from quasi-liquid polyurethane elastomer material with Shore hardness of A0-A20 by two-time casting and one-time molding. This invention avoids product contamination and surface rubber corrosion caused by hydraulic system leakage. Therefore, isostatic-pressing molds, especially ceramic isostatic-pressing molds, have lowered processing difficulty, labor intensity.