Self-cleaning type flow regulating valve with particle filtering structure

Abstract

The invention discloses a self-cleaning flow regulating valve with a particle filtering structure, which comprises a valve body, a material vibrating unit and an automatic material receiving and discharging unit, and a filter screen is obliquely arranged in a pipeline inner cavity of the valve body; the material vibrating unit is used for automatically vibrating the solid particles separated from the air flow on the filter screen to fall off; and the automatic receiving and discharging unit is used for receiving the shaken-off solid particles and automatically discharging the solid particles to the outside. The automatic reset unit, the vibration unit and the automatic receiving and discharging unit are arranged in the valve body, so that particles on the filter screen can be automatically and continuously cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of valve filtering, and in particular to a self-cleaning flow regulating valve with a particle filtering structure. Background Art

[0002] A regulating valve is a terminal element formed by a power-operated device in an industrial process control system. It usually includes a valve body component, which contains a component that can change the flow rate of the process fluid. The valve body component is connected to one or more actuators to change the flow rate, pressure, and other process parameters of the medium through power operation.

[0003] When an existing regulating valve regulates the gas flow, a filter is generally set inside the valve to separate the coarse solid particles in the gas. After long-term use, a large amount of solid particles will adhere to the surface of the filter, which will seriously affect the airflow through the filter. Therefore, the filter needs to be manually removed and cleaned at regular intervals, which is rather troublesome. Therefore, the present application provides a self-cleaning flow regulating valve with a particle filtering structure to meet the needs. Summary of the invention

[0004] The purpose of the present application is to provide a self-cleaning flow control valve with a particle filtering structure, which is used to solve the technical problem of requiring regular disassembly and cleaning of the filter screen inside the valve in the existing technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a self-cleaning flow control valve with a particle filtering structure, comprising a valve body, a filter screen is obliquely arranged in the inner cavity of the pipeline of the valve body, a material vibrating unit and an automatic material receiving and unloading unit; Vibrating unit: automatically vibrates the solid particles separated from the airflow on the filter screen; Automatic receiving and unloading unit: used to receive the solid particles that fall from the vibration and automatically discharge the solid particles to the outside.

[0006] As a preferred implementation in this embodiment, the vibrating material unit includes a wind catcher rotatably arranged in the inner cavity of the valve body and an elastic steel sheet installed at the axis of the filter screen; A hollow cylinder with a centrifugal spring installed inside is fixed on the rotating shaft of the wind catcher, a movable column is slidably clamped in the hollow cylinder through a limit block, the movable column is fixedly connected to the opposite end of the centrifugal spring, and a striking hammer is installed on the outer end of the movable column located on the hollow cylinder, and at the beginning, a gap is set between the striking hammer and the elastic steel sheet; The automatic material receiving and unloading unit comprises a block body with a rotating drum rotatably arranged inside, the block body is fixed on the outer wall of the valve body pipeline and is located directly below the filter screen, the rotating drum is provided with a material receiving cavity, and the material receiving cavity is communicated with the inner cavity of the pipeline through a material unloading port provided on the pipeline, and an elastic sealing layer is provided on the outer wall of the rotating drum, and the elastic sealing layer is in sliding contact with the inner wall of the block body; The material receiving chamber is located on the left side of the vertical axis of the rotating drum; The block is provided with a material discharge outlet adapted to the material receiving cavity, and the material discharge outlet is located below the rotating drum; A hollow tube is fixed and tilted on one end of the rotating shaft of the rotating drum, and a gravity ball is movably arranged in the hollow tube. At the beginning, the gravity ball is located at the bottom end of the hollow tube.

[0007] As a preferred implementation manner in this embodiment, it also includes an automatic resetting unit, which is used to control the rotation of the drum and automatically restore the drum to its original position after the solid particles in the receiving chamber are discharged.

[0008] As a preferred implementation in this embodiment, the automatic reset unit includes a driving gear mounted on the other end of the rotating shaft of the drum, a toothed plate, an inclined rod with baffles at both ends, a magnetic isolation block slidably clamped in the inner cavity of the U-shaped plate through a sliding column, a one-way gear rotatably arranged on the outer wall of the block, and a positioning block with an inclined surface; The inclined rod is tilted, the toothed plate is toothed with the driving gear and is slidably arranged on the inclined rod, a magnetic isolation plate is arranged on one end of the toothed plate abutting against the magnetic isolation block, and a first permanent magnet is arranged in the mounting groove of the magnetic isolation plate; A second permanent magnet is arranged in the end surface groove of the magnetic isolation block at the end opposite to the first permanent magnet, the second permanent magnet is arranged in parallel with the first permanent magnet, and the magnetic poles of the opposite ends are the same, and the right end of the magnetic isolation block is connected to the U-shaped plate through a reset spring; The lower end of the positioning block is inserted into the positioning hole provided at the upper end of the magnetic isolation block, the upper end of the positioning block is fixedly connected to the lower end of the L-shaped rod, the L-shaped rod and the U-shaped plate are slidably penetrated, and a blocking piece is fixed on the L-shaped rod; A contact rod adapted to the L-shaped rod is provided at the upper end of the tooth plate; The sliding column is located in a sliding groove provided on the U-shaped plate, one end of the sliding column is connected to the winding wheel through a pull rope, and the winding wheel is coaxially provided with the one-way gear; The U-shaped plate and the two baffles are both fixed on the block.

[0009] As a preferred implementation manner in this embodiment, it also includes a slowing unit to control the tooth plate to move slowly downward in the initial stage.

[0010] As a preferred implementation in this embodiment, the damping unit includes an outer ring sleeved on the outer periphery of the inclined rod and fixed on the upper end of the tooth plate, and a rotating wheel rotatably arranged on the block; The outer wall of the outer ring is fixed with an elastic extrusion sleeve; The outer wall of the rotating wheel is provided with a pressing protrusion and a blocking protrusion opposite to each other, and also includes a first blocking bar and a second blocking bar arranged on the moving path of the blocking protrusion.

[0011] As a preferred implementation manner in this embodiment, it also includes an automatic adjustment unit, which can adjust the friction force between the elastic sealing layer and the block according to the pressure difference between the inside and outside of the valve body.

[0012] As a preferred implementation in this embodiment, the automatic adjustment unit includes an airbag arranged in the discharge port and a plurality of expansion chambers arranged in the elastic sealing layer, and the inner cavities of the plurality of expansion chambers are connected to the airbag through a connecting channel.

[0013] As a preferred implementation manner in this embodiment, a hollow protective cover is arranged on the periphery of the block, and the hollow protective cover is installed on the valve body.

[0014] In summary, the technical effects and advantages of the present invention are as follows: The invention has a reasonable structure. The valve body is provided with an automatic reset unit, a material vibration unit and an automatic material receiving unit, which can automatically and continuously clean particles on the filter screen. In the present invention, a slowing unit is provided to prolong the time that the receiving chamber of the drum faces downward, thereby providing sufficient time for the particles in the receiving chamber to be completely discharged; In the present invention, an automatic adjustment unit is provided, so that the structure can complete automatic discharging and resetting operations without erroneous discharging operations even when there is a large difference in air pressure inside and outside the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the local structure inside the pipeline; Figure 3for Figure 1 Schematic diagram of the local cross-section structure; Figure 4 for Figure 3 The enlarged structural diagram at A in the middle; Figure 5 for Figure 2 Schematic diagram of the local cross-section structure; Figure 6 for Figure 3 A schematic diagram of the partially enlarged structure; Figure 7 for Figure 6 The enlarged structural diagram at B in the middle; Figure 8 for Figure 6 The enlarged structural diagram at C in the middle; Fig. 9 for Figure 6 The enlarged structural diagram at D in the middle; Fig.10 for Figure 6 The enlarged structural diagram at E in the middle; Fig.11 Figure 2 Schematic diagram of the partial cross-section structure from the center and rear view.

[0017] In the figure: 1, valve body; 2, protective cover; 3, filter screen; 4, block; 5, wind catcher; 6, feed port; 7, hollow cylinder; 8, centrifugal spring; 9, movable column; 10, impact hammer; 11, rotating cylinder; 12, elastic sealing layer; 13, receiving cavity; 14, inclined rod; 15, tooth plate; 16, first permanent magnet; 17, magnetic isolation block; 18, second permanent magnet; 19, reset spring; 20, U-shaped plate; 21, sliding column; 22, Pull rope; 23. Drive gear; 24. One-way gear; 25. Winding wheel; 26. L-shaped rod; 27. Positioning block; 28. Inclined surface; 29. ​​Blocking piece; 30. Contact rod; 31. Elastic extrusion sleeve; 32. Outer ring; 33. Rotating wheel; 34. Blocking protrusion; 35. First baffle bar; 36. Second baffle bar; 37. Extrusion protrusion; 38. Hollow tube; 39. Gravity ball; 40. Airbag; 41. Expansion chamber; 42. Elastic steel sheet. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example: Reference Figure 1-2A self-cleaning flow control valve with a particle filtering structure shown in the figure comprises a valve body 1, a filter screen 3 is obliquely arranged in the inner cavity of the pipeline of the valve body 1, a material vibrating unit and an automatic material receiving and unloading unit; Vibrating unit: automatically vibrates the solid particles separated from the airflow on the filter screen 3; Automatic receiving and unloading unit: used to receive the solid particles that fall from the vibration and automatically discharge the solid particles to the outside.

[0020] As a preferred implementation in this embodiment, Figure 3-5 and Fig.11 As shown, the vibrating material unit includes a wind catcher 5 rotatably arranged in the inner cavity of the valve body 1 and an elastic steel sheet 42 installed at the axis of the filter screen 3; A hollow cylinder 7 with a centrifugal spring 8 installed inside is fixed on the rotating shaft of the wind catcher 5. A movable column 9 is slidably connected to the hollow cylinder 7 through a limit block 11. The movable column 9 is fixedly connected to the opposite end of the centrifugal spring 8. A striking hammer 10 is installed on the outer end of the movable column 9 located at the hollow cylinder 7. At the beginning, a gap is set between the striking hammer 10 and the elastic steel sheet 43. The automatic receiving and unloading unit comprises a block 4 with a rotating drum 11 rotating inside, the block 4 is fixed on the outer wall of the valve body 1 pipeline and is located directly below the filter screen 3, the rotating drum 11 is provided with a receiving cavity 13, and the receiving cavity 13 is communicated with the inner cavity of the pipeline through a unloading port 6 provided on the pipeline, and an elastic sealing layer 12 is provided on the outer wall of the rotating drum 11, and the elastic sealing layer 12 is in sliding contact with the inner wall of the block 4; The receiving chamber 13 is located on the left side of the vertical axis of the rotating drum 11; The block 4 is provided with a discharge outlet adapted to the receiving cavity 13, and the discharge outlet is located below the rotating drum 11; A hollow tube 38 is fixed and tilted on one end of the rotating shaft of the rotating drum 11 , and a gravity ball 39 is movably arranged in the hollow tube 38 . Initially, the gravity ball 39 is located at the bottom end of the hollow tube 38 .

[0021] During operation, the flow of gas will cause the wind catcher 5 to rotate, and the rotating shaft of the wind catcher 5 will accelerate as the speed of the airflow increases, and the centrifugal force will cause the movable column 9 to move outward. As the wind catcher 5 rotates faster and faster, the centrifugal force on the movable column 9 will become larger and larger, and the impact hammer 10 will collide with the elastic steel sheet 42, causing it to bend and deform, and finally pass over the elastic steel sheet 42. The elastic steel sheet 42 will vibrate when it is hit and when it is bent and restored to its original position, thereby driving the filter screen to vibrate, thereby shaking off the particles on the filter screen 3. The movable column 9 can move freely outward due to the centrifugal force, so that the impact hammer 10 can have a certain impact strength when colliding with the elastic steel sheet 42, so as to facilitate the impact hammer to complete the operation of colliding with the elastic steel sheet 42 and passing over the elastic steel sheet 42, which is conducive to shaking off the particles on the filter screen 3. The particles after shaking enter the receiving chamber 13 through the material discharge hole 6. As the particles in the receiving chamber 13 pile up higher and higher and fill up the receiving chamber 13, as the particles continue to accumulate, the weight continues to act on the inner wall of the receiving chamber 13, which will cause the drum 11 to overcome the friction resistance generated by the elastic sealing layer 12 and the block 4 and rotate counterclockwise (such as Figure 5 As the drum 11 slowly rotates, the inclined hollow tube 828 will change from an inclined state (as shown in FIG. Figure 5 In the process, the gravity ball 39 will move from the right to the left end which is set obliquely downward due to the broken balance. In the process, the gravity of the gravity ball 39 enables the drum 11 to have enough force to overcome the friction and accelerate the downward rotation, and align the receiving chamber 13 with the discharge outlet, so that the particles in the receiving chamber 13 are discharged through the discharge outlet.

[0022] It should be noted that: first, the elastic sealing layer 12 can prevent the gas inside the valve body 1 from escaping through the gap between the drum 11 and the block 4; second, Fig.11 As shown, the distance L1 from the axis of the rotating shaft of the rotating drum 11 to the leftmost end of the hollow tube 38 is smaller than the distance L2 from the axis of the rotating shaft to the rightmost end of the hollow tube 38. As the gravity ball 39 passes over the axis of the rotating shaft and enters the path of L2, as the gravity ball 39 is farther and farther away from the axis, the force arm generated becomes longer and longer, thereby making it easier for the rotating drum 11 to overcome the friction force and rotate, thereby accelerating the rotation of the rotating drum 11; Fourth, the wind catcher is a prior art, which includes a rotating shaft and a wind catching portion that is circumferentially arranged on the rotating shaft and has a bowl-shaped structure.

[0023] As a preferred implementation manner in this embodiment, an automatic reset unit is also included, which is used to control the rotation of the drum 11 and automatically restore the drum 11 to its original position after the solid particles in the receiving cavity 13 are discharged.

[0024] As a preferred implementation in this embodiment, Figure 6-8 As shown, the automatic reset unit includes a driving gear 23 mounted on the other end of the rotating shaft of the rotating drum 11, a tooth plate 15, an inclined rod 14 with baffles at both ends, a magnetic isolation block 17 slidably engaged in the inner cavity of the U-shaped plate 20 through a slide column 21, a one-way gear 24 rotatably arranged on the outer wall of the block body 4, and a positioning block 27 with an inclined surface 28; The inclined rod 14 is tilted, the tooth plate 15 is gear-engaged with the driving gear 23 and is slidably arranged on the inclined rod 14, a magnetic isolation plate is arranged on one end of the tooth plate 15 abutting against the magnetic isolation block 17, and a first permanent magnet 16 is arranged in the mounting groove of the magnetic isolation plate; A second permanent magnet 18 is disposed in the end surface groove of the magnetic isolation block 17 opposite to the first permanent magnet 16. The second permanent magnet 18 is disposed in parallel with the first permanent magnet 16, and the magnetic poles of the opposite ends are the same. The right end of the magnetic isolation block 17 is connected to the U-shaped plate 20 through a return spring 19. The lower end of the positioning block 27 is inserted into the positioning hole provided at the upper end of the magnetic isolation block 17, and the upper end of the positioning block 27 is fixedly connected to the lower end of the L-shaped rod 26. The L-shaped rod 26 and the U-shaped plate 20 are slidably penetrated, and a blocking piece 29 is fixed on the L-shaped rod 26. The upper end of the tooth plate 15 is provided with a contact rod 30 adapted to the L-shaped rod 26; The slide post 21 is located in a slide groove provided on the U-shaped plate 20. One end of the slide post 21 is connected to the winding wheel 25 through a pull rope 22. The winding wheel 25 is coaxially arranged with the one-way gear 24. The U-shaped plate 20 and the two baffles are all fixed on the block 4 .

[0025] During the counterclockwise rotation of the drum 11, the rotating shaft on the drum 11 drives the toothed plate 15 to move obliquely upward through the driving gear 23. Since the first permanent magnet 16 and the second permanent magnet 18 are arranged obliquely in parallel, the toothed plate 15 is subjected to an oblique upward force component, and the force component can offset part of the gravity of the toothed plate 15, thereby reducing the resistance encountered by the counterclockwise rotation of the drum 11. The toothed plate 15 moving upward (when the toothed plate 15 moves upward, it cannot drive the winding wheel 25 to rotate through the one-way gear 24) has a contact rod 30 arranged thereon, which contacts the L-shaped rod 26 and drives the L-shaped rod 26 to move upward, releasing the positioning connection between the positioning block 27 and the U-shaped plate 20. When the positioning connection is completed, the reset spring 19 contracts, causing the magnetic isolation block 17 to move away from the toothed plate 15 (in this process, the pull rope 22 drives the winding wheel 2 5 for unwinding movement), in which the receiving chamber 13 discharges material downward, and after the tooth plate 15 stops moving, the tooth plate 15 moves downward due to its own gravity. Since the interval between the two magnets becomes larger, the magnetic force is very small and can be ignored. The tooth plate 15's own gravity causes the drum 11 to rotate in the opposite direction and eventually return to its original position (the gravity ball 39 will also return to its original position). After moving downward for a certain distance, the tooth plate will drive the one-way gear to rotate clockwise, causing the winding wheel 25 to take up the line, so that the magnetic isolation block 17 moves close to the tooth plate 15, and the end of the moving magnetic isolation block 17 is pressed and contacted with the inclined surface 28, and finally the positioning block 27 is plugged into the positioning hole to position the magnetic isolation block 17. The automatic resetting unit, the material vibrating unit and the automatic material receiving and unloading unit are set to automatically and continuously clean the particles on the filter screen 3.

[0026] It should be noted that: 1. A damping ring is provided at the rotational connection between the mounting shaft of the one-way gear 24 and the block 4, which is beneficial to the stability of the mounting shaft; 2. This structure is suitable for the case where the difference in air pressure inside and outside the valve body 1 is not too large; 3. The weight of the tooth plate 15 and the gravity ball 39 can be selected according to actual needs; 3. The two permanent magnets are arranged obliquely in parallel, which ensures that the upward component of force on the tooth plate 15 always remains consistent, which is beneficial to the movement of the tooth plate 15.

[0027] As a preferred implementation manner in this embodiment, a slowing unit is further included to control the tooth plate 15 to move slowly downward in the initial stage.

[0028] The purpose of providing the slowing unit is to prolong the time that the receiving chamber 13 of the drum 11 faces downward, thereby providing enough time for the particles in the receiving chamber 13 to be completely discharged.

[0029] As a preferred implementation in this embodiment, Fig. 9 and Fig.10 As shown, the retarding unit includes an outer ring 32 sleeved on the outer periphery of the inclined rod 14 and fixed on the upper end of the tooth plate 15, and a rotating wheel 33 rotatably arranged on the block 4; An elastic extrusion sleeve 31 is fixedly sleeved on the outer wall of the outer ring 32; The outer wall of the rotating wheel 33 is provided with a pressing protrusion 37 and a blocking protrusion 34 opposite to each other, and also includes a first blocking bar 35 and a second blocking bar 36 arranged on the moving path of the blocking protrusion 34 .

[0030] When the tooth plate 15 moves upward, the elastic extrusion sleeve 31 on its outer ring 32 will contact the rotating wheel 33 and drive the rotating wheel 33 to rotate clockwise. When the blocking protrusion 34 on the rotating wheel 33 contacts the second baffle 36, the rotating wheel 33 stops rotating. At this time, the tooth plate 15 overcomes the contact friction between the elastic extrusion sleeve 31 and the rotating wheel 33 and continues to move upward. When the tooth plate 15 moves downward, the rotating wheel 33 is driven to rotate counterclockwise through friction, and the blocking protrusion 34 contacts the first baffle 36. At this time, the extrusion protrusion 37 forms a large extrusion contact with the outer wall of the elastic extrusion sleeve 31, so that the tooth plate 15 moves downward slowly, providing enough time for complete material unloading.

[0031] It should be noted that: 1. Both the first baffle 35 and the second baffle 36 are installed on the block 4; 2. Several groups of extrusion protrusions 27 can be set as needed; 3. This buffer unit is a staged block, which only blocks for a period of time. After the elastic extrusion sleeve 31 contacts and separates from the extrusion protrusion 37, it will not hinder the rotation of the drum 11, which is beneficial to the rapid resetting of the drum 11, and further beneficial to the rapid removal of the vibrated particles out of the valve body 1.

[0032] As a preferred implementation in this embodiment, an automatic adjustment unit is also included, which can adjust the friction between the elastic sealing layer 12 and the block 4 according to the pressure difference between the inside and outside of the valve body 1.

[0033] When the air pressure in the valve body 1 is much greater than the external air pressure, the drum 11 will rotate counterclockwise under the action of the air pressure, resulting in an erroneous discharge operation.

[0034] As a preferred implementation in this embodiment, Figure 5 As shown, the automatic adjustment unit includes an airbag 40 arranged in the feed port 6 and a plurality of expansion chambers 41 arranged in the elastic sealing layer 12, and the inner chambers of the plurality of expansion chambers 41 are connected to the airbag 40 through connecting channels.

[0035] When the internal air pressure of the valve body 1 increases, the internal air pressure of the valve body 1 is greater than the air pressure in the airbag 30. The gas in the airbag 30 can be squeezed and sent to the expansion chamber 41, so that the squeezing between the elastic sealing layer 12 and the inner wall of the block 4 increases, thereby increasing the rotation resistance of the drum 11, hindering the rotation of the drum 11 under the action of the air pressure. That is, the automatic adjustment single ring can automatically adjust the resistance to the rotation of the drum 11 according to the size of the air pressure, so that the present structure can complete the automatic discharging and resetting operations without causing erroneous discharging operations even when there is a large difference in air pressure inside and outside the valve body 1.

[0036] As a preferred implementation in this embodiment, Figure 1 As shown, a hollow protective cover 2 is arranged on the periphery of the block 4 , and the hollow protective cover 2 is installed on the valve body 1 .

[0037] The components arranged inside the protective cover 2 are isolated and protected, and the protective cover 2 is arranged in a round-shaped structure.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning flow control valve with a particle filtering structure, comprising a valve body (1), wherein a filter screen (3) is obliquely arranged in the inner cavity of a pipeline of the valve body (1), and characterized in that: It also includes a material vibrating unit and an automatic material receiving and unloading unit; A vibration unit for automatically shaking off the solid particles separated from the airflow on the filter screen (3); Automatic receiving and unloading unit: used to receive the solid particles that fall from the vibration and automatically discharge the solid particles to the outside.

2. The self-cleaning flow control valve with a particle filtering structure according to claim 1, characterized in that: The vibrating material unit comprises a wind catcher (5) rotatably arranged in the inner cavity of the valve body (1) and an elastic steel sheet (42) installed at the axis of the filter screen (3); A hollow cylinder (7) with a centrifugal spring (8) installed inside is fixed on the rotating shaft of the wind catcher (5); a movable column (9) is slidably engaged in the hollow cylinder (7) via a limit block (11); the movable column (9) is fixedly connected to the opposite end of the centrifugal spring (8); a striking hammer (10) is installed on the outer end of the movable column (9) located on the hollow cylinder (7); and at the beginning, a gap is provided between the striking hammer (10) and the elastic steel sheet (43); The automatic material receiving and unloading unit comprises a block (4) having a rotating drum (11) rotatably disposed therein, the block (4) being fixed on the outer wall of the valve body (1) pipeline and being located directly below the filter screen (3), the rotating drum (11) being provided with a material receiving cavity (13), and the material receiving cavity (13) being communicated with the inner cavity of the pipeline through a material unloading port (6) disposed on the pipeline, the outer wall of the rotating drum (11) being provided with an elastic sealing layer (12), and the elastic sealing layer (12) being in sliding contact with the inner wall of the block (4); The material receiving chamber (13) is located on the left side of the vertical axis of the rotating drum (11); The block (4) is provided with a material discharge outlet adapted to the material receiving cavity (13), and the material discharge outlet is located below the rotating drum (11); A hollow tube (38) is fixedly and tiltedly arranged on one end of the rotating shaft of the rotating drum (11), and a gravity ball (39) is movably arranged in the hollow tube (38). At the beginning, the gravity ball (39) is located at the bottom end of the hollow tube (38).

3. The self-cleaning flow control valve with a particle filtering structure according to claim 2, characterized in that: It also includes an automatic reset unit, which is used to control the rotation of the drum (11) and automatically restore the drum to its original position after the solid particles in the receiving cavity (13) are discharged.

4. The self-cleaning flow control valve with a particle filtering structure according to claim 3, characterized in that: The automatic reset unit comprises a driving gear (23) mounted on the other end of the rotating shaft of the rotating drum (11), a toothed plate (15), an inclined rod (14) with baffles at both ends, a magnetic isolation block (17) slidably engaged in the inner cavity of the U-shaped plate (20) via a sliding column (21), a one-way gear (24) rotatably arranged on the outer wall of the block body (4), and a positioning block (27) with an inclined surface (28); The inclined rod (14) is arranged obliquely, the tooth plate (15) is tooth-engaged with the driving gear (23) and is slidably arranged on the inclined rod (14), a magnetic isolation plate is arranged on one end of the tooth plate (15) abutting against the magnetic isolation block (17), and a first permanent magnet (16) is arranged in a mounting groove of the magnetic isolation plate; A second permanent magnet (18) is arranged in a groove on the end surface of the magnetic isolation block (17) opposite to the first permanent magnet (16); the second permanent magnet (18) is arranged in parallel with the first permanent magnet (16) and has the same magnetic poles at the opposite ends; and the right end of the magnetic isolation block (17) is connected to the U-shaped plate (20) via a return spring (19); The lower end of the positioning block (27) is inserted into a positioning hole provided at the upper end of the magnetic isolation block (17); the upper end of the positioning block (27) is fixedly connected to the lower end of the L-shaped rod (26); the L-shaped rod (26) and the U-shaped plate (20) are slidably intersected; a baffle (29) is fixed to the L-shaped rod (26); A contact rod (30) adapted to the L-shaped rod (26) is provided at the upper end of the tooth plate (15); The sliding column (21) is located in a sliding groove provided on the U-shaped plate (20), one end of the sliding column (21) is connected to a winding wheel (25) via a pull rope (22), and the winding wheel (25) is coaxially arranged with the one-way gear (24); The U-shaped plate (20) and the two baffles are both fixed on the block (4).

5. A self-cleaning flow control valve with a particle filtering structure according to claim (4), characterized in that: It also comprises a slowing unit for controlling the tooth plate (15) to move slowly downwards in the initial stage.

6. The self-cleaning flow control valve with a particle filtering structure according to claim 5, characterized in that: The damping unit comprises an outer ring (32) sleeved on the periphery of the inclined rod (14) and fixed to the upper end of the tooth plate (15), and a rotating wheel (33) rotatably arranged on the block (4); An elastic extrusion sleeve (31) is fixedly sleeved on the outer wall of the outer ring (32); The outer wall of the rotating wheel (33) is provided with a pressing protrusion (37) and a blocking protrusion (34) opposite to each other, and also includes a first blocking bar (35) and a second blocking bar (36) arranged on the moving path of the blocking protrusion (34).

7. The self-cleaning flow control valve with a particle filtering structure according to claim 2, characterized in that: It also comprises an automatic adjustment unit, which can adjust the friction force between the elastic sealing layer (12) and the block (4) according to the pressure difference between the inside and outside of the valve body (1).

8. The self-cleaning flow control valve with a particle filtering structure according to claim 7, characterized in that: The automatic adjustment unit comprises an airbag (40) arranged in the feed opening (6) and a plurality of expansion chambers (41) arranged in the elastic sealing layer (12), wherein the inner chambers of the plurality of expansion chambers (41) are connected to the airbag (40) via a connecting channel.

9. The self-cleaning flow control valve with a particle filtering structure according to claim 4, characterized in that: A hollow protective cover (2) is arranged on the periphery of the block (4), and the hollow protective cover (2) is mounted on the valve body (1).

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