A self-cleaning filter valve for the inlet of a high-temperature pump

Abstract

This utility model discloses a self-cleaning filter valve for the inlet of a high-temperature pump, belonging to the field of filter valve technology. This self-cleaning filter valve for the inlet of a high-temperature pump includes an on / off component and a cleaning component. The cleaning component is disposed on one side of the on / off component and includes a valve housing. An installation groove is formed inside the valve housing, and a connector is installed at one end of the installation groove. The inner diameter of the connector gradually decreases from the end furthest from the connecting pipe to the end closest to the connecting pipe. A filter element is installed inside the connector at the end with the smaller inner diameter. A backwash pipe is connected to the connector at the end with the smaller inner diameter. A first branch pipe and a second branch pipe are respectively connected to the two sides of the backwash pipe. The opposite ends of the first and second branch pipes extend through the valve housing to the outside. A first solenoid valve and a second solenoid valve are respectively installed at the opposite ends of the first and second branch pipes. This utility model can effectively improve the cleaning efficiency of the filter element inside the filter valve and has high practical value.

Description

Technical Field

[0001] This utility model relates to the field of filter valve technology, specifically a self-cleaning filter valve for the inlet of a high-temperature pump. Background Technology

[0002] A high-temperature pump is a type of pump that uses a permanent magnet coupling to transmit torque without contact. It drives the impeller to rotate through a magnetic field, achieving a fully enclosed, leak-free pump design. It is mainly used to transport high-temperature media and is particularly suitable for industrial fields such as petroleum, chemical, and pharmaceutical industries that require a leak-free environment. A filter valve is a specialized valve device installed at the inlet of a high-temperature pump to filter impurities from the high-temperature fluid. It intercepts solid impurities in the high-temperature fluid through a built-in filter element, preventing impurities from entering the pump and extending its service life. Filter elements include sintered metal mesh and ceramic filter elements. High-temperature fluids include oil slurry (200-400℃), molten resin, and high-temperature water.

[0003] Based on the above, the inventors have discovered the following problems: the current filter valve cleaning methods are limited and cannot adapt to complex impurities in high-temperature environments. The types of impurities in the high-temperature pump feed liquid are complex, including dry impurities such as metal particles and coke, as well as sticky impurities such as high-temperature oil residue and resin scale. A single cleaning method is insufficient to completely remove different types of impurities.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a self-cleaning filter valve for the inlet of a high-temperature pump, in order to achieve a more practical value. Utility Model Content

[0005] The purpose of this invention is to provide a self-cleaning filter valve for the inlet of a high-temperature pump to solve the problems mentioned in the background art.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] A self-cleaning filter valve for the inlet of a high-temperature pump includes an on / off assembly and a cleaning assembly. The cleaning assembly is disposed on one side of the on / off assembly. The cleaning assembly includes a valve housing with an installation groove inside. A connector is installed at one end of the installation groove. The connector is frustoconical in shape, and its inner diameter gradually decreases from the end furthest from the connecting pipe to the end closest to the connecting pipe. A filter element is disposed inside the connector at the end with the smaller inner diameter. A backwash pipe is connected to the connector at the end with the smaller inner diameter. A first branch pipe and a second branch pipe are respectively connected to the two sides of the backwash pipe. The opposite ends of the first and second branch pipes extend through the valve housing to the outside. A first solenoid valve and a second solenoid valve are respectively installed at the opposite ends of the first and second branch pipes.

[0008] Furthermore, the outer walls of the first branch pipe and the second branch pipe are both welded and fixed to the outer wall of the valve housing. The connector and the backflushing pipe are arranged sequentially from the end away from the connecting pipe to the end closer to the connecting pipe, and the outer walls of the connector and the backflushing pipe are both fixedly connected to the inner wall of the mounting groove.

[0009] The beneficial effects of adopting the above-mentioned further solution are that the first branch pipe is welded and fixed to the valve body, and the second branch pipe is welded and fixed to the valve body, so that the first branch pipe, the second branch pipe and the valve body form an integral whole, so that there is no risk of leakage at high temperature and the high-temperature liquid or backwash medium such as high-temperature cleaning agent or compressed air is prevented from seeping out from the connection gap; the fixed connection of the connector and the backwash pipe to the mounting groove, such as welding or bonding with high-temperature resistant sealant, ensures the structural stability of the filter element and the backwash pipe under high pressure difference and high temperature environment, prevents the displacement of components due to fluid impact or thermal deformation, and ensures the continuous reliability of the filtration and backwashing process.

[0010] Furthermore, the end of the first solenoid valve away from the first branch pipe is connected to the air outlet of the air compressor via a hose, and the end of the second solenoid valve away from the second branch pipe is connected to the liquid outlet of the pump via a hose.

[0011] The beneficial effects of adopting the above-mentioned further solution are as follows: when dry impurities such as metal particles or coke lumps adhere to the side of the filter element away from the on / off assembly, the first solenoid valve is opened, and high-pressure compressed air is introduced through the air compressor to quickly remove the impurities using the impact force of the airflow; when the impurities are viscous substances such as high-temperature oil residue, the second solenoid valve is opened, and a cleaning agent is injected through the pump to remove the impurities using the dual action of chemical dissolution and liquid flushing. The type of cleaning agent is selected by the user based on the liquid injected into the entire filter valve, such as oil; the setting of the first and second solenoid valves controls the opening and closing of the first and second branch pipes; when the first and second solenoid valves are closed, the on / off assembly cooperates to allow flow, and at this time, the liquid can enter the pump body through the cleaning assembly, the on / off assembly, and the pump body inlet pipe; when the first or second solenoid valve is open, the on / off assembly cooperates to cut off the flow, cleaning the deposits on the side of the filter element away from the on / off assembly.

[0012] Furthermore, the on / off assembly includes a connecting pipe, one end of which is fixedly connected to the end of the valve housing furthest from the connector. The connecting pipe and the valve housing are coaxially arranged. The advantage of this further solution is that the coaxial arrangement of the connecting pipe and the valve housing ensures that when fluid enters the valve housing from the connecting pipe, the flow direction is consistent with the axis of the filter element and the backwash pipe. Furthermore, the middle part of the connecting pipe is spherical, and a spherical groove is formed inside the connecting pipe. A spherical seat is rotatably connected inside the spherical groove, and a flow channel is formed inside the spherical seat. The flow channel, the connecting pipe, and the valve housing are coaxially arranged, and a connecting flange is installed at the opposite ends of the connecting pipe and the valve housing.

[0013] The beneficial effects of adopting the above-mentioned further solution are that the spherical seat can rotate horizontally within the spherical groove. By rotating the spherical seat, the flow channel can be aligned with the inlet and outlet of the connecting pipe for flow or staggered and cut off. The connecting flange at one end of the valve body facilitates quick docking between the valve body and the flange at the upstream pipe port, and the connecting flange at one end of the connecting pipe facilitates quick docking between the connecting pipe and the flange at the inlet of the high-temperature pump. Furthermore, the rigid fixing method of the flange connection is adapted to the frequent thermal expansion and contraction under high-temperature environment, reducing the risk of loosening of the connection parts.

[0014] Furthermore, the middle part of the connecting pipe is spherical, and a spherical groove is opened inside the connecting pipe. A spherical seat is rotatably connected inside the spherical groove. A flow channel is opened inside the spherical seat. The flow channel, the connecting pipe, and the valve body are coaxially arranged. A connecting flange is installed at the opposite ends of the connecting pipe and the valve body.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the magnet block and the magnetic spherical seat form an attraction, driving the spherical seat to rotate and realize the opening and closing of the flow channel; when the magnet block slides along the mounting strip from one end near the valve body to the other end away from the valve body, the spherical seat rotates in the spherical groove under the magnetic attraction of the magnet block, so that the flow channel and the inlet and outlet of the connecting pipe are misaligned to complete the cut-off; neodymium iron boron magnets or samarium cobalt magnets are selected. The applicable temperature range of neodymium iron boron magnets is 150-250℃, and the applicable temperature range of samarium cobalt magnets is 250-400℃, ensuring magnetic stability at the corresponding temperature, reliable drive, and suitability for the high-temperature working environment of the filter valve.

[0016] Furthermore, the top and bottom surfaces of the mounting strip are provided with grooves, and sliders are slidably connected inside the two grooves. The opposite sides of the two sliders are respectively fixedly connected to the outer walls of the two magnet blocks.

[0017] The beneficial effect of adopting the above-mentioned further solution is that, through the sliding cooperation of the groove and the slider, the magnet block can be slidably adjusted, and the magnet block is tightly attached to the outer wall of the connecting pipe, so as to maximize the magnetic attraction efficiency.

[0018] Furthermore, a first high-temperature pressure sensor and a second high-temperature pressure sensor are respectively installed on the outer wall of the valve housing on both sides of the filter element. The detection end of the first high-temperature pressure sensor extends through the valve housing and the connector to the interior of the connector, and the detection end of the second high-temperature pressure sensor extends through the valve housing and the backwash pipe to the interior of the backwash pipe.

[0019] The beneficial effects of adopting the above-mentioned further solution are that, by setting a first high-temperature resistant pressure sensor and a second high-temperature resistant pressure sensor on both sides of the filter element to monitor the pressure difference, it is possible to effectively distinguish between the inherent pressure difference caused by the change in the inner diameter of the frustum-shaped structure of the connector and the blockage pressure difference formed by the impurities trapped by the filter element. By preset the inherent pressure difference benchmark value under non-blockage conditions, the additional pressure difference caused by actual blockage can be accurately calculated, which serves as the basis for judging the start and stop of backwashing. When the additional pressure difference exceeds 0.3MPa, cleaning is initiated, and the corresponding first solenoid valve, air compressor or second solenoid valve, and pump need to be opened for backwashing cleaning. Cleaning is stopped when the pressure drops below 0.1MPa, avoiding ineffective flushing and waste of media, avoiding misjudgment caused by pressure difference interference caused by the pipeline structure itself, significantly improving the accuracy of self-cleaning triggering timing and the controllability of cleaning effect, ensuring the continuous and stable operation of the filter valve under high-temperature conditions, and further ensuring the safe use of the high-temperature pump.

[0020] The first and second high-temperature resistant pressure sensors ensure detection accuracy under extreme temperatures, providing reliable pressure signal feedback for the automated operation of the filter valve. Compared with the prior art, the beneficial effects of this utility model are: This high-temperature pump inlet self-cleaning filter valve, when cleaning is required, disconnects the connection between the upstream pipe and the valve housing. Then, when the magnet is slid along the mounting strip from one end near the valve housing to the other, the spherical seat rotates within the spherical groove under the magnetic attraction of the magnet, causing the flow channel and the inlet / outlet of the connecting pipe to be misaligned, thus completing the cut-off. The cleaning method is determined based on the liquid entering the pump body, such as water or oil. If the liquid entering is high-temperature water, and dry impurities adhere to the side of the filter element away from the on / off component, the first solenoid valve is opened. High-pressure compressed air is introduced through an air compressor, and the impact force of the airflow is used to quickly remove impurities. If the liquid introduced is high-temperature oil, and sticky impurities adhere to the side of the filter element away from the on / off component, the second solenoid valve is opened, and a cleaning agent is injected through a pump. The impurities are removed by the dual action of chemical dissolution and liquid flushing. The type of cleaning agent is selected by the user based on the liquid injected into the entire filter valve, such as oil. The backwashing medium can be discharged in the reverse direction through the connector, thereby achieving the purpose of cleaning the filter element. The filter element is composed of a stainless steel sintered mesh on the left and a silicon carbide ceramic filter element on the right. Attached Figure Description

[0021] Figure 1 A three-dimensional structural schematic diagram of a self-cleaning filter valve for a high-temperature pump inlet provided by this utility model;

[0022] Figure 2 A cross-sectional view of the valve housing of a self-cleaning filter valve for a high-temperature pump inlet provided by this utility model.

[0023] Figure 3An exploded three-dimensional structural diagram of the on / off assembly of a high-temperature pump inlet self-cleaning filter valve provided by this utility model;

[0024] Figure 4 This is a front cross-sectional view of a self-cleaning filter valve for a high-temperature pump inlet, provided by this utility model.

[0025] In the diagram: 1. On / off assembly; 11. Connecting pipe; 12. Spherical groove; 13. Spherical seat; 14. Flow channel; 15. Mounting strip; 16. Magnet block; 2. Cleaning assembly; 21. Valve housing; 22. Connector; 23. Backwash pipe; 24. Filter element; 25. First branch pipe; 26. Second branch pipe; 27. First solenoid valve; 28. Second solenoid valve; 29. ​​First high-temperature pressure sensor; 210. Second high-temperature pressure sensor. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-4This utility model provides a technical solution: a self-cleaning filter valve for the inlet of a high-temperature pump, including an on / off assembly 1 and a cleaning assembly 2. The cleaning assembly 2 is disposed on one side of the on / off assembly 1. The cleaning assembly 2 includes a valve housing 21, with an installation groove inside the valve housing 21. A connector 22 is installed at one end of the installation groove. The connector 22 is frustoconical, and its inner diameter gradually decreases from the end away from the connecting pipe 11 to the end closer to the connecting pipe 11. A filter element 24 is disposed inside the smaller inner diameter end of the connector 22. A backwash pipe 23 is connected to the smaller inner diameter end of the connector 22. The two sides of the backwash pipe 23 are respectively connected to... The system includes a first branch pipe 25 and a second branch pipe 26. The opposite ends of the first branch pipe 25 and the second branch pipe 26 extend through the valve housing 21 to the outside. A first solenoid valve 27 and a second solenoid valve 28 are respectively installed at the opposite ends of the first branch pipe 25 and the second branch pipe 26. The outer walls of both the first branch pipe 25 and the second branch pipe 26 are welded and fixed to the outer wall of the valve housing 21. A connector 22 and a backflushing pipe 23 are sequentially arranged from the end furthest from the connecting pipe 11 to the end closest to the connecting pipe 11, and the outer walls of both the connector 22 and the backflushing pipe 23 are fixedly connected to the inner wall of the mounting groove. The end of the first solenoid valve 27 furthest from the first branch pipe 25 is used for... The air compressor outlet is connected via a hose, and the end of the second solenoid valve 28 away from the second branch pipe 26 is connected to the pump outlet via a hose. When cleaning is required, disconnect the upstream pipe from the valve housing 21, and then slide the magnet 16 along the mounting strip 15 from the end near the valve housing 21 to the end away from the valve housing 21. At this time, the spherical seat 13 rotates in the spherical groove 12 under the magnetic attraction of the magnet 16, so that the flow channel 14 is misaligned with the inlet and outlet of the connecting pipe 11 to complete the cut-off. The cleaning method is determined according to the liquid introduced into the pump body, such as water or oil. If the liquid introduced is high temperature water, the side of the filter element 24 away from the on / off assembly 1 will be dry. When there are impurities, the first solenoid valve 27 is opened, and high-pressure compressed air is introduced through the air compressor. The impurities are quickly removed by the impact force of the airflow. If the liquid introduced is high-temperature oil, and sticky impurities are attached to the side of the filter element 24 away from the on / off component 1, the second solenoid valve 28 is opened, and a cleaning agent is injected through the pump. The impurities are removed by the dual action of chemical dissolution and liquid flushing. The type of cleaning agent is selected by the user based on the liquid injected into the entire filter valve, such as oil. The backwashing medium can be discharged in reverse through the connector 22, thereby achieving the purpose of cleaning the filter element 24. The filter element 24 is composed of a stainless steel sintered mesh on the left and a silicon carbide ceramic filter element on the right.

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-4 This utility model provides a technical solution: the on / off assembly 1 includes a connecting pipe 11, one end of which is fixedly connected to the end of the valve housing 21 away from the connector 22. The connecting pipe 11 and the valve housing 21 are coaxially arranged. The middle part of the connecting pipe 11 is spherical, and a spherical groove 12 is formed inside the connecting pipe 11. A spherical seat 13 is rotatably connected inside the spherical groove 12. A flow channel 14 is formed inside the spherical seat 13. The flow channel 14, the connecting pipe 11, and the valve housing 21 are coaxially arranged. A connecting flange is installed at the end opposite to the valve body 21. The spherical seat 13 is made of either neodymium iron boron magnet or samarium cobalt magnet. An installation strip 15 is installed on the outer wall of the connecting pipe 11. Magnet blocks 16 are provided on the outer side of the installation strip 15 near the valve body 21. The sides of the two magnet blocks 16 are tightly fitted to the outer wall of the connecting pipe 11 in the middle. The magnet blocks 16 and the spherical seat 13 are magnetically attracted to each other. Sliding grooves are provided on the top and bottom surfaces of the installation strip 15. The interiors of the two sliding grooves are slidably connected. There are sliders, and the opposite sides of the two sliders are fixedly connected to the outer walls of the two magnet blocks 16 respectively. The outer wall of the valve housing 21 is equipped with a first high-temperature pressure sensor 29 and a second high-temperature pressure sensor 210 on both sides of the filter element 24. The detection end of the first high-temperature pressure sensor 29 extends through the valve housing 21 and the connector 22 to the inside of the connector 22. The detection end of the second high-temperature pressure sensor 210 extends through the valve housing 21 and the backwash pipe 23 to the inside of the backwash pipe 23. The upstream pipe is flanged and fitted with a high-temperature sealing gasket. High-temperature liquid such as water or oil enters the inside of the connector 22 and flows through the filter element 24. After filtration, it enters the backwash pipe 23. At this time, the first solenoid valve 27 and the second solenoid valve 28 are both closed. The flow channel 14 of the ball seat 13 is aligned with the inlet and outlet of the connecting pipe 11, so that the high-temperature liquid enters the pump body through the backwash pipe 23, the inlet of the connecting pipe 11, the flow channel 14 of the ball seat 13, the outlet of the connecting pipe 11, and the pump body inlet pipe.

[0030] Specifically, the working principle of this high-temperature pump inlet self-cleaning filter valve is as follows: During use, the upstream pipe is flanged to the valve housing 21 and fitted with a high-temperature resistant sealing gasket. High-temperature liquid, such as water or oil, enters the connector 22 and flows through the filter element 24. After filtration, it enters the backwash pipe 23. At this time, both the first solenoid valve 27 and the second solenoid valve 28 are closed. The flow channel 14 of the ball seat 13 is aligned with the inlet and outlet of the connecting pipe 11, allowing the high-temperature liquid to enter through the backwash pipe 23, the inlet of the connecting pipe 11, the flow channel 14 in the ball seat 13, the outlet of the connecting pipe 11, and the pump body's inlet pipe. The filter element 24 is inserted into the pump body. By monitoring the pressure difference using a first high-temperature resistant pressure sensor and a second high-temperature resistant pressure sensor on both sides of the filter element 24, the inherent pressure difference caused by the change in the inner diameter of the frustum-shaped structure of the connector and the blockage pressure difference caused by impurities trapped by the filter element can be effectively distinguished. By pre-setting the inherent pressure difference benchmark value under non-blockage conditions, the additional pressure difference caused by actual blockage can be accurately calculated, serving as the basis for judging the start and stop of backwashing. When the additional pressure difference exceeds 0.3 MPa, it indicates that the filter element 24 is severely blocked. The connection between the upstream pipe and the valve body 21 is then disconnected, and then... When the magnet 16 slides along the mounting strip 15 from one end near the valve housing 21 to the other end away from the valve housing 21, the spherical seat 13 rotates in the spherical groove 12 under the magnetic attraction of the magnet 16, causing the flow channel 14 to be misaligned with the inlet and outlet of the connecting pipe 11, thus completing the cut-off. The cleaning method is determined based on the liquid introduced into the pump body, such as water or oil. If the introduced liquid is high-temperature water, and dry impurities adhere to the side of the filter element 24 away from the on / off assembly 1, the first solenoid valve 27 is opened, and high-pressure compressed air is introduced through the air compressor, using the impact force of the airflow to quickly remove the impurities; if the introduced liquid is... When high-temperature oil is present and sticky impurities adhere to the side of filter element 24 away from the on / off assembly 1, the second solenoid valve 28 is opened, and a cleaning agent is injected through the pump. The impurities are removed by the dual action of chemical dissolution and liquid flushing. The type of cleaning agent is selected by the user based on the liquid injected into the entire filter valve, such as oil. The backwashing medium can be discharged in reverse through connector 22, thereby achieving the purpose of cleaning filter element 24. During the backwashing process, the cleaning effect is judged by the decrease in pressure difference. If the additional pressure difference drops below 0.1MPa, the cleaning is stopped to avoid ineffective flushing and waste of medium.

[0031] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. Furthermore, since this application is mainly used to protect mechanical devices, the control methods and circuit connections will not be explained in detail in this application.

Claims

1. A high temperature pump inlet self-cleaning filter valve, characterized in that, The device includes a switching component (1) and a cleaning component (2). The cleaning component (2) is disposed on one side of the switching component (1). The cleaning component (2) includes a valve housing (21). The valve housing (21) has an internal mounting groove. A connector (22) is installed at one end of the internal mounting groove. The connector (22) is frustoconical in shape. The inner diameter of the connector (22) gradually decreases from the end away from the connecting pipe (11) to the end closer to the connecting pipe (11). The connector (22) has a smaller inner diameter at the end... The end is equipped with a filter element (24). The connector (22) is connected to a backwash pipe (23) at the end with a smaller inner diameter. The backwash pipe (23) is connected to a first branch pipe (25) and a second branch pipe (26) on both sides of its exterior. The opposite ends of the first branch pipe (25) and the second branch pipe (26) extend through the valve housing (21) to the outside. The opposite ends of the first branch pipe (25) and the second branch pipe (26) are respectively equipped with a first solenoid valve (27) and a second solenoid valve (28).

2. A high temperature pump inlet self-cleaning filter valve according to claim 1, characterized in that, The outer walls of the first branch pipe (25) and the second branch pipe (26) are welded and fixed to the outer wall of the valve body (21). The connector (22) and the backwash pipe (23) are arranged sequentially from the end away from the connecting pipe (11) to the end close to the connecting pipe (11), and the outer walls of the connector (22) and the backwash pipe (23) are fixedly connected to the inner wall of the mounting groove.

3. A high temperature pump inlet self-cleaning filter valve according to claim 1, characterized in that, The end of the first solenoid valve (27) away from the first branch pipe (25) is used to connect with the air outlet of the air compressor through a hose, and the end of the second solenoid valve (28) away from the second branch pipe (26) is used to connect with the liquid outlet of the pump through a hose.

4. A high temperature pump inlet self-cleaning filter valve according to claim 1, characterized in that, The on / off assembly (1) includes a connecting pipe (11), one end of which is fixedly connected to the end of the valve housing (21) away from the connector (22), and the connecting pipe (11) and the valve housing (21) are coaxially arranged.

5. A high temperature pump inlet self-cleaning filter valve according to claim 4, wherein, The middle part of the connecting pipe (11) is spherical, and a spherical groove (12) is opened inside the connecting pipe (11). A spherical seat (13) is rotatably connected inside the spherical groove (12). A flow channel (14) is opened inside the spherical seat (13). The flow channel (14), the connecting pipe (11), and the valve body (21) are coaxially arranged. A connecting flange is installed at the opposite end of the connecting pipe (11) and the valve body (21).

6. A high temperature pump inlet self-cleaning filter valve according to claim 5, wherein, The spherical seat (13) is made of either neodymium iron boron magnet or samarium cobalt magnet. An installation strip (15) is installed on the outer wall of the connecting pipe (11). A magnet block (16) is provided on the outer side of the installation strip (15) near the valve body (21). The sides of the two magnet blocks (16) are closely attached to the outer wall of the connecting pipe (11) in the middle. The magnet blocks (16) and the spherical seat (13) are magnetically attracted to each other.

7. The high-temperature pump inlet self-cleaning filter valve according to claim 6, characterized in that, The top and bottom surfaces of the mounting strip (15) are provided with grooves, and sliders are slidably connected inside the two grooves. The opposite sides of the two sliders are respectively fixedly connected to the outer walls of the two magnet blocks (16).

8. A high temperature pump inlet self-cleaning filter valve according to claim 1, wherein, The outer wall of the valve housing (21) is equipped with a first high-temperature pressure sensor (29) and a second high-temperature pressure sensor (210) on both sides of the filter element (24). The detection end of the first high-temperature pressure sensor (29) extends through the valve housing (21) and the connector (22) to the inside of the connector (22). The detection end of the second high-temperature pressure sensor (210) extends through the valve housing (21) and the backwash pipe (23) to the inside of the backwash pipe (23).

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