Mud valve with self-cleaning function

Abstract

The invention discloses a mud valve with a self-cleaning function, and relates to the technical field of mud valves, the mud valve comprises a mud valve body, and the center of the mud valve body is provided with a valve plate with an adjustable opening degree; the self-cleaning unit is arranged at the top end of the mud valve body in a lifting mode, a cleaning cone and a cleaning spray head are rotationally arranged at the bottom of the self-cleaning unit, and the cleaning spray head is connected with cleaning liquid supply equipment through a pipeline; and the cleaning control unit is used for evaluating the blocking degree of the mud valve body and controlling the self-cleaning unit to work according to an evaluation result. The self-cleaning unit arranged in a lifting mode is adopted, occupation of the internal space of the slurry valve body is reduced, the influence on the flow speed of the slurry valve is reduced, spraying cleaning is conducted on the two sides of the valve plate through the cleaning nozzles arranged in a rotating mode, slurry attached to the surface of the valve plate is reduced, the slurry valve is prevented from being blocked during use, meanwhile, the covering range of cleaning liquid is wider, and the cleaning effect is better. The cleaning liquid consumption is reduced; and the cleaning effect is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of mud valves, and more particularly to a mud valve with a self-cleaning function. Background Art

[0002] Slurry valves are designed for wear resistance and slag removal, and are widely used in the chemical, construction, petroleum, fire protection, and power industries. Mud valves control the flow and shutoff of slurry. During the flow of slurry, slurry adheres to the inner wall of the valve body and the valve plate, affecting the opening and closing of the valve plate. Furthermore, residual slurry dries and clogs the slurry valve, affecting the flow and normal operation of the slurry during subsequent use. Therefore, slurry valves require cleaning.

[0003] In the prior art, patent document CN 209892857 U, for example, discloses a mud valve with an anti-clogging function. The valve is equipped with two sets of stirring rods, which rotate to stir the mud water entering the mud valve, preventing mud and other impurities in the mud water from accumulating inside the mud valve, thereby reducing the mud valve's conveying efficiency. However, this device only clears the mud and cannot clean the inner wall of the valve body or the valve plate. Residual mud will still adhere to the valve, affecting its operation. Furthermore, the internal stirring rods occupy a large space within the mud valve body. When the stirring rods are not rotating, they hinder the flow of mud, affecting the mud flow rate.

[0004] Therefore, it is necessary to propose a mud valve with a self-cleaning function to at least partially solve the problems existing in the prior art. Summary of the Invention

[0005] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To at least partially solve the above problems, the present invention provides a mud valve with a self-cleaning function, comprising:

[0007] The mud valve body has a valve plate with adjustable opening arranged in the center of the mud valve body;

[0008] A self-cleaning unit is installed at the top of the mud valve body. A cleaning cone and a cleaning nozzle are installed at the bottom of the self-cleaning unit. The cleaning nozzle is connected to the cleaning liquid supply device through a pipeline.

[0009] The cleaning control unit is used to evaluate the blockage degree of the mud valve body and control the operation of the self-cleaning unit according to the evaluation results.

[0010] Preferably, the cleaning control unit comprises:

[0011] The data acquisition unit uses a flow rate sensor to detect the flow rate at the outlet end of the mud valve body;

[0012] The blockage assessment unit calculates the difference between the flow rate at the outlet of the mud valve body and the preset flow rate based on the acquired flow rate data. When the flow rate difference exceeds the preset value, it indicates that the mud valve body is blocked and the self-cleaning unit is started for cleaning.

[0013] Preferably, the cleaning control unit further comprises:

[0014] The cleaning fluid pressure control unit determines the pressure of the injected cleaning fluid by consulting a preset cleaning fluid injection pressure comparison table based on the diameter of the mud valve body and the calculated flow rate difference;

[0015] The injection control unit is used to control the operation of the self-cleaning unit based on the pressure of the cleaning liquid.

[0016] Preferably, the self-cleaning unit comprises:

[0017] Lifting cylinder, which is connected to the top of the mud valve body and arranged on both sides of the valve plate;

[0018] A power box body, which is connected to the top of the lifting cylinder;

[0019] A cleaning rod is connected to the bottom end of the power box and extends into the mud valve body. A cleaning cone and a cleaning nozzle are arranged at the bottom of the cleaning rod.

[0020] Preferably, the cleaning cone is connected to the bottom end of the cleaning rod. The cleaning cone includes an upper conical surface and a lower conical surface. The upper conical surface is arranged in the conical groove of the mud valve body, and a sealing strip is provided on the edge of the conical groove; a plurality of crushing columns are evenly distributed on the lower conical surface.

[0021] Preferably, the power box includes: a motor and a core shaft, the motor is installed in the driving cavity at the upper part of the power box; the core shaft is installed at the output end of the motor and extends into the cleaning rod, and two cross bars are symmetrically connected to the upper part of the core shaft;

[0022] The cleaning rod includes a central slide and a through slot. The central slide is arranged at the center of the cleaning rod and passes through the top of the cleaning rod. Two through slots are symmetrically arranged on the side walls of the cleaning rod and connected to the central slide. The core shaft is slidably arranged in the central slide, and the cross bar is slidably arranged in the through slot.

[0023] Preferably, the power box further includes:

[0024] A guide chute is provided in a circumferential direction at the lower part of the power box;

[0025] A lower sliding groove, which is connected to the bottom end of the guide sliding groove and passes through the power box;

[0026] A ball, the ball is slidably connected in the guide groove;

[0027] The support rod is slidably connected in the lower sliding groove, and the two ends of the support rod are respectively connected to the ball and the cleaning rod.

[0028] Preferably, the guide chute is arranged in a wave shape, and the undulating height of the guide chute is not greater than the height of the through groove.

[0029] Preferably, at least two nozzle grooves are provided at the lower part of the cleaning rod near the cleaning cone, and the multiple nozzle grooves are evenly arranged along the circumferential direction of the cleaning rod, and the nozzle grooves are connected to the center slide; the cleaning nozzle is rotatably set in the nozzle groove, and the nozzle end of the cleaning nozzle is connected to the inner wall of the nozzle groove with an elastic protective film.

[0030] Preferably, rotating shafts are provided on both sides of the cleaning nozzle, and coil springs are provided at the connection points of the rotating shafts;

[0031] Two torsion grooves are provided on the side wall of the nozzle groove, and the two ends of the rotating shaft are slidably connected in the torsion grooves, and an elastic reset member is provided between the end of the rotating shaft and the end of the torsion groove;

[0032] A connecting rod is hinged between the cleaning nozzle and the side wall of the core shaft, and a hinge point between the connecting rod and the cleaning nozzle is located at a lower part of one side of the cleaning nozzle.

[0033] Compared with the prior art, the present invention has at least the following beneficial effects:

[0034] The present invention provides a mud valve with a self-cleaning function, which adopts a self-cleaning unit arranged in a lifting manner, which can reduce the occupation of the internal space of the mud valve body and reduce the impact on the flow rate of the mud valve; when cleaning is not performed, the cleaning nozzle is stored at the top of the mud valve body to prevent the cleaning nozzle from being blocked and reduce the cleaning pressure; at the same time, the cleaning nozzle is arranged in a rotating manner to spray and clean both sides of the valve plate, reducing the mud adhesion on the surface of the valve plate and preventing the mud valve from getting stuck when in use. At the same time, the cleaning liquid covers a wider range, reducing the amount of cleaning liquid used and ensuring the cleaning effect.

[0035] The mud valve with self-cleaning function described in the present invention, other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0037] Figure 1 This is a structural schematic diagram of a mud valve with a self-cleaning function according to the present invention;

[0038] Figure 2 This is a schematic structural diagram of the mud valve of the present invention when it is working;

[0039] Figure 3 It is a structural schematic diagram of the power box and the cleaning rod in the present invention;

[0040] Figure 4 This is a schematic diagram of the axial cross-sectional structure of the power box and the cleaning rod in the present invention;

[0041] Figure 5 Schematic diagram of the expanded structure of the guide chute in the present invention;

[0042] Figure 6 Schematic diagram of the radial cross-section structure of the cleaning rod of the present invention;

[0043] Figure 7 For the present invention Figure 6 A partial enlarged structural diagram of point A in the middle.

[0044] In the figure: 1. Mud valve body; 2. Valve plate; 3. Cleaning cone; 4. Cleaning nozzle; 11. Lifting cylinder; 12. Power box; 13. Cleaning rod; 14. Upper cone surface; 15. Lower cone surface; 16. Conical groove; 17. Motor; 18. Core shaft; 19. Center slide; 21. Cross bar; 22. Through groove; 23. Guide slide; 24. Lower slide; 25. Ball; 26. Support rod; 31. Nozzle groove; 32. Elastic protective membrane; 33. Rotating shaft; 34. Torsion groove; 35. Elastic reset part; 36. Connecting rod. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0046] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0047] Example 1:

[0048] like Figure 1 、 Figure 2 As shown, the present invention provides a mud valve with a self-cleaning function, comprising:

[0049] The mud valve body 1 has a valve plate 2 with adjustable opening arranged at the center of the mud valve body 1;

[0050] A self-cleaning unit is provided at the top of the mud valve body 1, and a cleaning cone 3 and a cleaning nozzle 4 are provided at the bottom of the self-cleaning unit. The cleaning nozzle 4 is connected to the cleaning liquid supply device through a pipeline.

[0051] The cleaning control unit is used to evaluate the blockage degree of the mud valve body 1 and control the operation of the self-cleaning unit according to the evaluation result.

[0052] The working principle and beneficial effects of the above technical solution are:

[0053] The present invention provides a mud valve with a self-cleaning function. A self-cleaning unit is arranged on the mud valve body 1. The self-cleaning unit is lifted and lowered on the mud valve body 1. The blockage degree of the mud valve body 1 is detected and evaluated by the cleaning control unit. When the mud valve body 1 is blocked and needs to be unblocked and cleaned, the opening of the valve plate 2 is adjusted to the maximum. The cleaning cone 3 and the cleaning nozzle 4 in the self-cleaning unit are extended into the interior of the mud valve body 1. The cleaning cone 3 is rotated to penetrate the blockage on both sides of the valve plate 2. Cleaning liquid is injected into the blockage through the rotating cleaning nozzle 4. After the cleaning liquid is sprayed out, the blockage is unblocked and the inner wall of the mud valve body 1 is cleaned; then the valve plate 2 is closed, and both sides of the valve plate 2 are cleaned by the rotating cleaning nozzle 4.

[0054] Through the above-mentioned structural design, the self-cleaning unit with a lifting arrangement is adopted, which can reduce the occupation of the internal space of the mud valve body 1 and reduce the impact on the flow rate of the mud valve; when cleaning is not performed, the cleaning nozzle 4 is stored at the top of the mud valve body 1 to prevent the cleaning nozzle 4 from being blocked and reduce the cleaning pressure; at the same time, the cleaning nozzle 4 is rotated to spray and clean both sides of the valve plate 2, reducing the mud adhesion on the surface of the valve plate 2 and preventing the mud valve from getting stuck during use. At the same time, the cleaning liquid covers a wider range, reducing the amount of cleaning liquid used and ensuring the cleaning effect.

[0055] Example 2:

[0056] Based on the above embodiment 1, the cleaning control unit includes:

[0057] The data acquisition unit uses a flow rate sensor to detect the flow rate at the outlet end of the mud valve body 1;

[0058] The blockage assessment unit calculates the difference between the flow rate at the outlet of the mud valve body 1 and the preset flow rate based on the acquired flow rate data. When the flow rate difference exceeds the preset value, it indicates that the mud valve body 1 is blocked, and the self-cleaning unit is started for cleaning.

[0059] The working principle and beneficial effects of the above technical solution are:

[0060] The data acquisition unit detects the outlet flow rate through a flow rate sensor provided at the outlet end of the mud valve body 1, compares the actual detected outlet flow rate with the preset outlet flow rate, and calculates the flow rate difference as a basis for blockage assessment; assuming that the flow rate at the inlet end of the mud valve body 1 is equal to the preset flow rate, when the flow rate difference exceeds the preset value, it indicates that the flow in the mud valve body 1 is abnormal due to attachments blocking the valve body, too many attachments causing restricted opening of the valve plate 2, etc., and the self-cleaning unit is started for cleaning; the monitoring and evaluation of the status of the mud valve body 1 is effectively realized, the start-up of the self-cleaning unit is accurately controlled, and the mud valve is kept clean.

[0061] Example 3:

[0062] Based on the above embodiment 1, the cleaning control unit further includes:

[0063] The cleaning liquid pressure control unit queries a preset cleaning liquid injection pressure comparison table based on the diameter of the mud valve body 1 and the calculated flow rate difference to determine the pressure of the injected cleaning liquid;

[0064] The injection control unit is used to control the operation of the self-cleaning unit based on the pressure of the cleaning liquid.

[0065] The working principle and beneficial effects of the above technical solution are:

[0066] The specific degree of blockage is determined by the flow rate difference between the inlet end of the mud valve body 1 and the preset flow rate, thereby achieving accurate injection of the cleaning liquid. The cleaning liquid pressure control unit calculates the blockage rate of the mud valve body 1 based on the diameter of the mud valve body 1 and the flow rate difference; the pressure of the cleaning liquid is determined by a pressure comparison table. The horizontal axis of the pressure comparison table is the diameter value of the mud valve body 1, and the vertical axis is the blockage rate value. The pressure data corresponding to the horizontal and vertical coordinates is the required cleaning liquid injection pressure; the pressure comparison table is obtained through experimental statistics. When the cleaning liquid uses the said injection pressure, it can flush out the mud blockage in the mud valve body 1 and also flush the inner wall of the mud valve body 1 and the valve plate 2.

[0067] Example 4:

[0068] like Figure 1 、 Figure 2 As shown, based on the above embodiment 1, the self-cleaning unit includes:

[0069] Lifting cylinder 11, which is connected to the top of the mud valve body 1 and arranged on both sides of the valve plate 2;

[0070] The power box 12 is connected to the top of the lifting cylinder 11;

[0071] The cleaning rod 13 is connected to the bottom end of the power box 12 and extends into the mud valve body 1 . The cleaning cone 3 and the cleaning nozzle 4 are arranged at the bottom of the cleaning rod 13 .

[0072] The working principle and beneficial effects of the above technical solution are:

[0073] When the self-cleaning unit is in use, the lifting cylinder 11 contracts to drive the power box 12 toward the mud valve body 1, driving the cleaning rod 13 to extend into the mud valve body 1. The power box 12 can drive the cleaning cone 3 and the cleaning nozzle 4 to rotate, breaking up hard blockages through the cleaning cone 3 and cleaning the interior of the mud valve body 1 through the cleaning nozzle 4. When cleaning is completed, the lifting cylinder 11 extends to drive the power box 12 away from the mud valve body 1, so that the cleaning rod 13 is removed from the mud valve body 1, reducing the obstruction of the cleaning rod 13 to the mud flow and protecting the cleaning nozzle 4.

[0074] Example 5:

[0075] like Figure 1-Figure 3 As shown, based on the above-mentioned embodiment 4, the cleaning cone 3 is connected to the bottom end of the cleaning rod 13. The cleaning cone 3 includes an upper conical surface 14 and a lower conical surface 15. The upper conical surface 14 is arranged in the conical groove 16 of the mud valve body 1, and a sealing strip is provided on the edge of the conical groove 16; a plurality of crushing columns are evenly distributed on the lower conical surface 15; and a pressure sensor is provided at the bottom end of the cleaning cone 3.

[0076] The working principle and beneficial effects of the above technical solution are:

[0077] The cleaning cone 3 is designed with a double-conical structure, with the upper conical surface 15 being smooth. During cleaning, the mud formed by cleaning can slide down the upper conical surface 15, keeping it clean. After cleaning is complete, the cleaning cone 3 moves upward to engage the upper conical surface 14 within the conical groove 16, sealing the conical groove 16 and preventing mud leakage during use of the mud valve body 1. A crushing column is provided on the lower conical surface. As the cleaning cone 3 rotates, the crushing column breaks up blockages, facilitating the entry of the cleaning rod 13 and the outflow of cleaning fluid, thereby improving cleaning effectiveness. A pressure sensor can be installed at the bottom of the cleaning cone 3. When the cleaning cone 3 is extended into a location with a high pressure reading, indicating a more severe blockage, the cleaning nozzle 3 can be activated at this location to clear and clean the blockage.

[0078] Example 6:

[0079] like Figure 4 As shown, based on the above embodiment 4, the power box 12 includes: a motor 17 and a core shaft 18, the motor 17 is installed in the upper drive cavity of the power box 12; the core shaft 18 is installed at the output end of the motor 17 and extends into the cleaning rod 13, and two cross bars 21 are symmetrically connected to the upper part of the core shaft 18;

[0080] The cleaning rod 13 includes a central slide 19 and a through slot 22. The central slide 19 is arranged at the center of the cleaning rod 13 and passes through the top of the cleaning rod 13. Two through slots 22 are symmetrically arranged on the side walls of the cleaning rod 13 and connected to the central slide 19; the core shaft 18 is slidably arranged in the central slide 19, and the cross bar 21 is slidably arranged in the through slot 22.

[0081] The working principle and beneficial effects of the above technical solution are:

[0082] When the self-cleaning unit performs the cleaning operation, the motor 17 in the power box 12 is started, the core shaft 18 connected to the output end of the motor 17 rotates, and the two cross bars 21 on the core shaft 18 are located in the through groove 22, driving the cleaning rod 13 to rotate accordingly. That is, the cleaning rod 13 is driven to rotate by the power box 12, so that the cleaning cone 3 and the cleaning nozzle 4 can rotate around the core shaft 18 as the center, fully contact with the blockage, and improve the crushing effect of the cleaning cone 3. The cleaning liquid injected by the cleaning nozzle 4 flows to various positions in the mud valve body 1 during rotation, thereby improving the all-round cleaning effect.

[0083] Example 7:

[0084] like Figure 4 、 Figure 5 As shown, based on the above embodiment 6, the power box 12 further includes:

[0085] The guide chute 23 is circumferentially arranged at the lower portion of the power box 12;

[0086] A lower sliding groove 24, which is connected to the bottom end of the guide sliding groove 23 and passes through the power box 12;

[0087] The ball 25 is slidably connected to the guide groove 23;

[0088] The support rod 26 is slidably connected to the lower sliding groove 24, and the two ends of the support rod 26 are respectively connected to the ball 25 and the cleaning rod 13.

[0089] The guide chute 23 is arranged in a wave shape, and the undulating height of the guide chute 23 is not greater than the height of the through groove 22 .

[0090] The working principle and beneficial effects of the above technical solution are:

[0091] As the core shaft 18 drives the cleaning rod 13 to rotate, the top of the cleaning rod 13 connects to the power box 12, the support rod 26 slides within the lower groove 24, and the ball 25 slides along the guide groove 23, which guides the cleaning rod 13. Because the guide groove 23 is arranged in a wavy shape, the ball 25 moves up and down with the undulations of the guide groove 23. The ball 25 drives the cleaning rod 13 up and down via the support rod 26. The cross bar 21 slides within the through groove 22 without affecting the rotation of the core shaft 18 and the cleaning rod 13. Therefore, the cleaning rod 13 moves up and down while rotating, expanding the spray range of the cleaning liquid, allowing it to better penetrate the mud blockage, clear the blockage, and thoroughly clean the inner wall of the mud valve body 1.

[0092] Example 8:

[0093] like Figure 4 、 Figure 6 、 Figure 7 As shown, on the basis of the above-mentioned embodiment 7, at least two nozzle grooves 31 are provided at the lower part of the cleaning rod 13 near the cleaning cone 3, and the multiple nozzle grooves 31 are evenly arranged along the circumferential direction of the cleaning rod 13, and the nozzle grooves 31 are connected to the center slide 19; the cleaning nozzle 4 is rotatably set in the nozzle groove 31, and the nozzle end of the cleaning nozzle 4 is connected to the inner wall of the nozzle groove 31 with an elastic protective film 32.

[0094] The cleaning nozzle 4 is provided with a rotating shaft 33 on both sides for rotation, and a coil spring is provided at the connection of the rotating shaft 33;

[0095] Two torsion grooves 34 are provided on the side wall of the nozzle groove 31. The two ends of the rotating shaft 33 are slidably connected in the torsion grooves 34. An elastic reset member 35 is provided between the ends of the rotating shaft 33 and the ends of the torsion groove 34.

[0096] A connecting rod 36 is hinged between the cleaning nozzle 4 and the side wall of the core shaft 18 , and the hinge point between the connecting rod 36 and the cleaning nozzle 4 is located at a lower part of one side of the cleaning nozzle 4 .

[0097] The working principle and beneficial effects of the above technical solution are:

[0098] The cleaning nozzle 4 is installed in the nozzle slot 31. When the cleaning rod 13 rotates, it drives the cleaning nozzle 4 to rotate synchronously, causing the cleaning nozzle 4 to rotate and spray in a circumferential direction, so that the cleaning liquid is sprayed in all directions within the mud valve body 1. The stiffness of the coil spring at the rotating shaft 33 is greater than the stiffness of the elastic return member 35. When the cleaning rod 13 moves up and down, the cleaning rod 13 preferentially drives the cleaning nozzle 4 to rotate in the horizontal direction through the connecting rod 36, thereby adjusting the first relative angle between the cleaning nozzle 4 and the cleaning rod 13. When the cleaning nozzle 4 rotates to the extreme position and no longer rotates in the horizontal direction, it is driven by the connecting rod 36 to rotate relative to the rotating shaft 33 as the cleaning rod 13 moves, thus achieving a twisting of the cleaning nozzle 4 and adjusting the second relative angle between the cleaning nozzle 4 and the cleaning rod 13.

[0099] Through the above-mentioned structural design, when the self-cleaning unit is in operation, the relative angle between the cleaning nozzle 4 and the cleaning rod 13 can be adjusted, including horizontal rotation and twisting, so that the cleaning liquid can be fully injected into the mud valve body 1 and better sprayed on the inner wall of the mud valve body 1 and the surface of the valve plate 2, eliminating the cleaning dead corners of the inner wall of the mud valve body 1 and the valve plate 2. At the same time, the cleaning water sprayed by the cleaning nozzle 4 after the angle adjustment can smoothly flow to the upper conical surface 14 of the cleaning cone 3, providing water flow for cleaning the mud on the upper conical surface 14. The elastic protective membrane 32 prevents mud from entering the cleaning rod 13, does not affect the rotation of the cleaning nozzle 4, and ensures the normal operation of the cleaning process.

[0100] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0101] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0102] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A mud valve with self-cleaning function, characterized in that: include: A mud valve body (1), wherein a valve plate (2) with adjustable opening is provided at the center of the mud valve body (1); A self-cleaning unit, wherein the self-cleaning unit is lifted and arranged at the top of the mud valve body (1), a cleaning cone (3) and a cleaning nozzle (4) are rotatably arranged at the bottom of the self-cleaning unit, and the cleaning nozzle (4) is connected to the cleaning liquid supply device through a pipeline; The cleaning control unit is used to evaluate the blockage degree of the mud valve body (1) and control the operation of the self-cleaning unit according to the evaluation result.

2. A mud valve with self-cleaning function according to claim 1, characterized in that: The cleaning control unit includes: A data acquisition unit, using a flow rate sensor to detect the flow rate at the outlet end of the mud valve body (1); The blockage assessment unit calculates the difference between the flow velocity at the outlet of the mud valve body (1) and a preset flow velocity based on the acquired flow velocity data. When the flow velocity difference exceeds the preset value, it indicates that the mud valve body (1) is blocked, and the self-cleaning unit is activated for cleaning.

3. A mud valve with self-cleaning function according to claim 2, characterized in that: The cleaning control unit also includes: A cleaning liquid pressure control unit, based on the diameter of the mud valve body (1) and the calculated flow rate difference, queries a preset cleaning liquid injection pressure comparison table to determine the pressure of the injected cleaning liquid; The injection control unit is used to control the operation of the self-cleaning unit based on the pressure of the cleaning liquid.

4. The slurry valve with self-cleaning function according to claim 1, characterized in that: The self-cleaning unit includes: A lifting cylinder (11), the lifting cylinder (11) is connected to the top of the mud valve body (1) and is arranged on both sides of the valve plate (2); A power box (12), the power box (12) is connected to the top of the lifting cylinder (11); A cleaning rod (13) is connected to the bottom end of the power box (12), and the cleaning rod (13) extends into the mud valve body (1), and a cleaning cone (3) and a cleaning nozzle (4) are arranged at the bottom of the cleaning rod (13).

5. The slurry valve with self-cleaning function according to claim 4, characterized in that: The cleaning cone (3) is connected to the bottom end of the cleaning rod (13). The cleaning cone (3) includes an upper conical surface (14) and a lower conical surface (15). The upper conical surface (14) is arranged in a conical groove (16) of the mud valve body (1), and a sealing strip is arranged on the edge of the conical groove (16); a plurality of crushing columns are evenly distributed on the lower conical surface (15).

6. The slurry valve with self-cleaning function according to claim 4, characterized in that: The power box (12) includes: a motor (17) and a core shaft (18), the motor (17) is installed in the upper drive cavity of the power box (12); the core shaft (18) is installed at the output end of the motor (17) and extends into the cleaning rod (13), and the upper part of the core shaft (18) is symmetrically connected to two cross bars (21); The cleaning rod (13) includes a central slideway (19) and a through slot (22). The central slideway (19) is arranged at the center of the cleaning rod (13) and passes through the top of the cleaning rod (13). Two through slots (22) are symmetrically arranged on the side walls of the cleaning rod (13) and communicate with the central slideway (19). The core shaft (18) is slidably arranged in the central slideway (19), and the cross bar (21) is slidably arranged in the through slot (22).

7. The slurry valve with self-cleaning function according to claim 6, characterized in that: The power box (12) also includes: A guide chute (23), the guide chute (23) is circumferentially arranged at the lower portion of the power box (12); A lower sliding groove (24), the lower sliding groove (24) is connected to the bottom end of the guide sliding groove (23) and passes through the power box (12); A sphere (25), the sphere (25) is slidably connected in the guide groove (23); The support rod (26) and the support rod (25) are slidably connected in the lower sliding groove (24), and the two ends of the support rod (26) are respectively connected to the ball (25) and the cleaning rod (13).

8. The slurry valve with self-cleaning function according to claim 7, characterized in that: The guide chute (23) is arranged in a wave shape, and the undulating height of the guide chute (23) is not greater than the height of the through groove (22).

9. The slurry valve with self-cleaning function according to claim 7, characterized in that: At least two nozzle slots (31) are provided at the lower portion of the cleaning rod (13) near the cleaning cone (3), and the plurality of nozzle slots (31) are evenly arranged along the circumferential direction of the cleaning rod (13), and the nozzle slots (31) are connected to the central slideway (19); the cleaning nozzle (4) is rotatably provided in the nozzle slot (31), and an elastic protective film (32) is connected to the nozzle end of the cleaning nozzle (4) and the inner wall of the nozzle slot (31).

10. The slurry valve with self-cleaning function according to claim 9, characterized in that: Rotating shafts (33) are rotatably provided on both sides of the cleaning nozzle (4), and coil springs are provided at the connection points of the rotating shafts (33); Two torsion grooves (34) are provided on the side wall of the nozzle groove (31), and both ends of the rotating shaft (33) are slidably connected in the torsion grooves (34). An elastic reset member (35) is provided between the end of the rotating shaft (33) and the end of the torsion groove (34); A connecting rod (36) is hinged between the cleaning nozzle (4) and the side wall of the core shaft (18), and a hinge point between the connecting rod (36) and the cleaning nozzle (4) is located at a lower part of one side of the cleaning nozzle (4).

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