Mud valve

Abstract

The mud valve comprises a valve body, a valve cavity and a valve port are formed in the valve body, the valve body is provided with an inlet and an outlet, and the inlet is communicated with the outlet through the valve port; the valve body is fixedly connected with a cleaning box, the cleaning box is provided with a motor and a lifting tooth column, the output end of the motor is in transmission connection with the lifting tooth column, the cleaning box is fixedly connected with a screw cylinder, the lifting tooth column is fixedly connected with a screw rod part, the screw rod part penetrates through the screw cylinder and is fixedly connected with a linkage rod, and the linkage rod is fixedly connected with a sealing block; the sealing block is in sealing fit with the valve port and provided with a lead screw, the lead screw is in threaded connection with a transmission nut, a cleaning unit is arranged between the transmission nut and the sealing block and comprises a cleaning strip and a driving strip, and the cleaning strip is in transmission connection with the transmission nut through the driving strip. And meanwhile, the sealing block, the lead screw, the transmission nut and the cleaning unit are matched, so that precise control over unfolding and shrinking of the cleaning strip is ensured.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and in particular to a mud discharge valve. Background Technology

[0002] In municipal water supply and drainage, sewage treatment, and industrial fluid transportation pipeline systems, sludge discharge valves play a crucial role in periodically removing sludge and impurities deposited at the bottom of pools or pipes, ensuring unobstructed pipeline flow and normal system operation. However, during long-term use, the inner wall of traditional sludge discharge valves is prone to the adhesion and accumulation of sticky sludge, grease, and other sediments.

[0003] For example, a diaphragm-type sludge discharge valve disclosed in Chinese invention patent (authorization announcement number: CN114992334B) includes a valve body and a valve cover. The valve body has a flow chamber inside, an inlet on one side of the valve body, and an outlet at the bottom of the valve body. A valve diaphragm seat is fixedly connected to the top of the valve body. An elastic diaphragm is disposed between the top of the valve diaphragm seat and the bottom of the valve cover. An upper pressure plate and a lower pressure plate are fixedly connected to the top and bottom of the elastic diaphragm, respectively. A water pressure chamber is formed between the elastic diaphragm and the valve diaphragm seat. An inlet pipe is fixedly connected to one side of the valve diaphragm seat. An outlet valve is also provided on the valve diaphragm seat. The end of the inlet pipe away from the valve diaphragm seat is fixedly connected to a connecting pipe connected to an external drainage pool, which can clean the dirt on the inner wall of the valve body.

[0004] However, the above-mentioned sludge discharge valve is driven by high-pressure water, and its high-pressure driving force is difficult to maintain. Therefore, it cannot guarantee the opening and closing efficiency of the sludge discharge valve, which affects the cleaning effect and makes it difficult to effectively prevent sludge from adhering. As the usage time increases, the accumulated dirt will gradually reduce the effective flow diameter of the valve, and may even cause the valve to not close tightly or be completely blocked, affecting the stability of the system. Therefore, it is necessary to improve it. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a sludge discharge valve with a simple and reasonable structure and convenient operation. It achieves automatic sludge cleaning by driving the sealing block with a motor; at the same time, it utilizes the cooperation between the sealing block, lead screw, transmission nut and cleaning unit to achieve precise control of the expansion and contraction of the cleaning strip, thereby improving the comprehensiveness of the cleaning coverage.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: The present invention provides a mud discharge valve, comprising a valve body, wherein a valve cavity and a valve port are provided in the valve body, the valve body having an inlet and an outlet communicating with the valve cavity, and the inlet communicating with the outlet through the valve port; A cleaning box is fixedly connected to the valve body. A motor and a lifting gear are installed on the cleaning box. The output end of the motor is connected to the lifting gear. A screw cylinder is fixedly connected to the cleaning box. The lifting gear has a screw part that is threadedly connected to the screw cylinder. The screw part passes through the screw cylinder and is fixedly connected to a linkage rod. The linkage rod passes through the cleaning box, extends into the valve cavity, and is fixedly connected to a sealing block. The sealing block is sealed to the valve port. A lead screw is provided at one end of the sealing block near the valve port. A transmission nut is threaded to the outer wall of the lead screw. A cleaning unit for cleaning the inner wall of the valve body is provided between the transmission nut and the sealing block. The cleaning unit includes multiple cleaning strips and drive strips that correspond to the cleaning strips. The cleaning strips are arranged in a ring around the periphery of the sealing block. The cleaning strips are connected to the transmission nut through the drive strips.

[0007] Furthermore, the valve body is provided with a discharge pipe and an inlet pipe, the outlet is located in the discharge pipe, the inlet is located in the inlet pipe, the valve port is located at the junction of the discharge pipe and the inner wall of the valve body, and the diameter of the valve port is smaller than the outer diameter of the sealing block.

[0008] Furthermore, one end of the cleaning strip away from the inner wall of the valve body is hinged to the lower end of the sealing block, one end of the drive strip is hinged to the cleaning strip, and the other end of the drive strip is hinged to the outer wall of the transmission nut. The drive strip and the cleaning strip are connected near the sealing block.

[0009] Furthermore, both ends of the transmission nut are bolted with bellows, which are sleeved on the lead screw; The bellows end, located away from the sealing block, is rotatably fitted onto the outer peripheral wall of the lead screw.

[0010] Furthermore, the sealing block is provided with a ball joint that corresponds to the lead screw, and the lead screw is fixedly provided with a ball joint that corresponds to the ball joint.

[0011] Furthermore, a strip frame is provided inside the discharge pipe, and a mounting column connected to a screw bolt is fixedly installed on the strip frame.

[0012] Furthermore, a limiting block is fixedly provided on the outer wall of the strip frame, and a limiting groove corresponding to the limiting block is provided on the inner wall of the discharge pipe, and the limiting block is slidably connected to the limiting groove.

[0013] Furthermore, the valve body is provided with several cleaning holes at one end near the cleaning box. The cleaning holes are arranged in a ring along the outer wall of the linkage rod, and the valve cavity is connected to the interior of the cleaning box through the cleaning holes.

[0014] Furthermore, a cleaning pipe is fixedly connected to the outer wall of the cleaning box, one end of the cleaning pipe is connected to the inside of the cleaning box, and the other end of the cleaning pipe is connected to the outside.

[0015] Furthermore, a one-way valve is bolted to the end of the cleaning pipe furthest from the valve body.

[0016] The beneficial effects of this invention are as follows: This invention uses a motor to drive the sealing block to move up and down and rotate, while simultaneously causing the cleaning strip to unfold and scrape the inner wall of the valve body, thus achieving automatic cleaning of sludge and dirt without manual intervention.

[0017] This invention establishes a linkage mechanism between the sealing block, lead screw, transmission nut, and cleaning unit. The up-and-down rotation of the sealing block directly drives the cleaning unit to move synchronously, while the lead screw can move up and down and be limited to rotate. This achieves coordinated action with a simple structure and ensures precise control of the expansion and contraction of the cleaning strip. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure when the lifting gear and the sealing block are connected in this invention; Figure 4 This is a schematic cross-sectional view of the valve body and cleaning box in this invention; Figure 5 In this invention Figure 2 Enlarged view of the structure at point A; Figure 6 This is a schematic cross-sectional view of the sealing block and lead screw in this invention; Figure 7 This is a schematic cross-sectional view of the valve body in this invention.

[0019] Figures 1-7 middle: 1. Valve body; 101. Inlet pipe; 102. Outlet pipe; 103. Strip frame; 104. Mounting column; 105. Limiting groove; 106. Limiting block; 107. Inlet; 108. Outlet; 109. Valve port; 2. Cleaning box; 201. Screw barrel; 202. Cleaning pipe; 203. Check valve; 204. Cleaning hole; 3. Motor; 301. Gear; 4. Lifting gear; 401. Screw section; 402. Linkage rod; 5. Sealing block; 501. Transmission nut; 502. Cleaning strip; 503. Ball joint; 504. Bellows; 505. Drive bar; 6. Lead screw; 601. Ball joint. Detailed Implementation

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] like Figures 1-7 The sludge discharge valve shown includes a valve body 1, which is the main housing and contains fluid and other components. The valve body 1 is provided with a valve cavity and a valve port 109. The valve body 1 has an inlet 107 and an outlet 108 that are connected to the valve cavity. The inlet 107 is connected to the outlet 108 through the valve port 109.

[0022] See Figure 2 A cleaning box 2 is bolted to the valve body 1 for the flow of cleaning fluid. A motor 3 and a lifting gear 4 are installed on the cleaning box 2. The output end of the motor 3 is connected to the lifting gear 4. The output end of the motor 3 is connected to a gear 301 that meshes with the lifting gear 4. The motor 3 drives the gear 301 to rotate, thereby driving the movement of the lifting gear 4. A screw barrel 201 is fixedly connected to the cleaning box 2. The lifting gear 4 has a screw part 401 that is threadedly connected to the screw barrel 201. The screw barrel 201 provides a threaded interface so that the screw part 401 of the lifting gear 4 can be threadedly connected to the screw barrel 201, converting the rotational motion into linear motion. The screw part 401 passes through the screw barrel 201 and is fixedly connected to a linkage rod 402. The linkage rod 402 passes through the cleaning box 2, extends into the valve cavity, and is fixedly connected to a sealing block 5.

[0023] The sealing block 5 is sealed to the valve port 109. (See reference) Figure 6 A lead screw 6 is provided at one end of the sealing block 5 near the valve port 109. A transmission nut 501 is threaded onto the outer wall of the lead screw 6. A cleaning unit for cleaning the inner wall of the valve body 1 is provided between the transmission nut 501 and the sealing block 5. The cleaning unit includes multiple cleaning strips 502 and drive strips 505 that correspond to each cleaning strip 502. The cleaning strips 502 are arranged in a ring around the periphery of the sealing block 5. The cleaning strips 502 are connected to the transmission nut 501 through the drive strips 505. The cleaning strips 502 are used to scrape the inner wall of the valve body 1 to remove sludge. The drive strips 505 adjust the angle and pressure of the cleaning strips 502 according to the position of the transmission nut 501 to ensure effective cleaning.

[0024] See Figure 2 The motor 3 serves as the power source, driving the gear 301 to rotate, thereby controlling the movement of the lifting gear 4. The forward and reverse rotation of the motor 3 can control the up and down movement and rotation of the sealing block 5. The linkage rod 402 is used to connect the lifting gear 4 and the sealing block 5, transmitting the movement of the lifting gear 4 to the sealing block 5, causing the sealing block 5 to move up and down and rotate. The sealing block 5 is used to open and close the valve port 109. At the same time, the sealing block 5 serves as the base of the cleaning unit, with the cleaning strip 502 hinged on it. The rotation of the sealing block 5 drives the cleaning strip 502 to clean the inner wall of the valve cavity.

[0025] Preferably, in this embodiment, refer to Figure 2The valve body 1 is provided with a discharge pipe 102 and an inlet pipe 101. The outlet 108 is located in the discharge pipe 102, the inlet 107 is located in the inlet pipe 101, and the valve port 109 is located at the junction of the discharge pipe 102 and the inner wall of the valve body 1. The diameter of the valve port 109 is smaller than the outer diameter of the sealing block 5 to ensure that the sealing block 5 can completely seal the valve port 109. Specifically, when the sealing block 5 moves to the junction between the discharge pipe 102 and the valve body 1, the sealing block 5 and the valve port 109 are sealed together, thereby closing the valve body 1.

[0026] Preferably, in this embodiment, refer to Figure 2 and Figure 6 One end of the cleaning strip 502 away from the inner wall of the valve body 1 is hinged to the lower end of the sealing block 5. One end of the driving strip 505 is hinged to the cleaning strip 502, and the other end of the driving strip 505 is hinged to the outer wall of the transmission nut 501. The driving strip 505 and the cleaning strip 502 are connected near the sealing block 5. Preferably, in this embodiment, the sealing block 5 is provided with a ball joint 503 that corresponds to the lead screw 6, and the lead screw 6 is fixedly provided with a ball joint 601 that corresponds to the ball joint 503. The lead screw 6 is connected to the sealing block 5 through the ball joint 601, which controls the lead screw 6 to not rotate, but only to move up and down. Therefore, when the transmission nut 501 moves, it drives the cleaning strip 502 to move through the driving strip 505, causing the cleaning strip 502 to unfold or retract, adjusting the contact pressure between the cleaning strip 502 and the inner wall of the valve body 1.

[0027] Preferably, in this embodiment, refer to Figure 5 The upper and lower end faces of the transmission nut 501 are bolted with bellows 504 sleeved on the lead screw 6. The bellows 504 is sleeved on the lead screw 6 and connected to the upper and lower end faces of the transmission nut 501. It is used to protect the threaded parts of the lead screw 6 and the transmission nut 501, prevent sludge from entering, and ensure smooth movement. The lower end of the bellows 504 located below the transmission nut 501 is rotatably sleeved on the lower outer wall of the lead screw 6, allowing the lead screw 6 to rotate freely relative to the lower end of the bellows 504. This achieves both the protection of the lower part of the lead screw 6 and avoids interference with the rotational movement of the lead screw 6.

[0028] Preferably, in this embodiment, refer to Figure 7A strip frame 103 is provided inside the discharge pipe 102, and a mounting post 104, which is bolted to the lead screw 6, is fixedly installed on the strip frame 103. The strip frame 103 and the mounting post 104 are used to fix the lower end of the lead screw 6 and limit the rotation of the lead screw 6, allowing the lead screw 6 to move only up and down. A limit block 106 is fixed to the outer side of the inner wall of the discharge pipe 102 where the strip frame 103 is connected. A limit groove 105 with the same height as the travel distance of the sealing block 5 is opened at the position of the limit block 106 on the inner wall of the discharge pipe 102. The limit block 106 slides in the limit groove 105. The height of the limit groove 105 is the same as the travel distance of the sealing block 5, which limits the movement distance of the strip frame 103 and the lead screw 6 and prevents rotation, ensuring that the lead screw 6 can only move up and down.

[0029] Preferably, in this embodiment, refer to Figure 4 The valve body 1 is provided with several cleaning holes 204 at one end near the cleaning box 2. The cleaning holes 204 are arranged in a ring along the outer wall of the linkage rod 402. The valve cavity is connected to the interior of the cleaning box 2 through the cleaning holes 204, allowing the cleaning fluid to flow from the cleaning box 2 into the valve body 1 to assist in cleaning the inner wall of the valve body 1.

[0030] Preferably, in this embodiment, refer to Figure 4 A cleaning pipe 202 is fixedly connected to the outer wall of the cleaning box 2. One end of the cleaning pipe 202 is connected to the inside of the cleaning box 2, and the other end of the cleaning pipe 202 is connected to the outside.

[0031] Preferably, in this embodiment, refer to Figure 4 The end of the cleaning pipe 202 away from the valve body 1 is bolted with a one-way valve 203 for unidirectional flow of the cleaning fluid. The cleaning fluid enters the cleaning tank 2 through the one-way valve 203 and then flows into the valve body 1. The one-way valve 203 ensures that the cleaning fluid does not flow back.

[0032] The working principle of this embodiment is as follows: First, the motor 3 is started to rotate forward, and the motor 3 drives the gear 301 to rotate. The gear 301 drives the lifting gear 4 to rotate. The lifting gear 4 rotates upward in the screw barrel 201 through the screw part 401, thereby driving the sealing block 5 to move upward and rotate through the linkage rod 402. At this time, the sealing block 5 will move upward from the connection between the discharge pipe 102 and the valve body 1, thereby opening the discharge pipe 102. Fluid enters from the inlet pipe 101 and exits from the position of the discharge pipe 102. At the same time, when the motor 3 reverses, it controls the lifting gear 4, the linkage rod 402 and the sealing block 5 to move downward. After the sealing block 5 moves to the connection between the discharge pipe 102 and the valve body 1, the sealing block 5 blocks the discharge pipe 102. When the sealing block 5 is at its lower limit position, pressing tightly against the connection end between the valve body 1 and the discharge pipe 102, the valve port 109 is in a closed state. At this time, the screw 6 descends to the lowest point along with the sealing block 5. At this time, the transmission nut 501 is in a relatively lower position on the screw 6. Under the traction of the drive bar 505, the end of the cleaning bar 502 near the inner wall of the valve body 1 retracts and moves closer to the screw 6, disengaging from the inner wall of the valve body 1 and not performing cleaning work. When the sealing block 5 rotates and rises, it drives the lead screw 6 to move upwards as well. However, the lower end of the lead screw 6 is fixed to the strip frame 103 by the mounting post 104, and the limiting block 106 of the strip frame 103 is restricted in the limiting groove 105 of the discharge pipe 102, so that the lead screw 6 can only slide up and down and cannot rotate. Therefore, the lead screw 6 only moves axially up and down during the entire process and does not rotate itself. Thus, the sealing block 5 and the lead screw 6 move upwards synchronously. At the same time, the transmission nut 501 is screwed onto the lead screw 6 by threads and is restricted from rotating freely by the drive bar 505 and the cleaning bar 502. When the lead screw 6 moves upwards, it will force the transmission... Nut 501 moves downward relative to screw 6, which in turn drives the drive bar 505, which is hinged to it, to move downward as well. As a connecting rod, drive bar 505 pushes the outer end of cleaning bar 502 to swing outward around the hinge point with the bottom of sealing block 5. As sealing block 5 continues to rise, drive nut 501 continues to move downward relative to it. The thrust of drive bar 505 causes cleaning bar 502 to fully expand radially. The end of cleaning bar 502 will stick to the inner wall of valve body 1. Thus, as sealing block 5 rotates, cleaning bar 502 is driven to thoroughly scrape and clean the inner wall of valve body 1, scraping off the sludge attached to the inner wall of valve body 1.

[0034] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. A mud discharge valve, comprising a valve body (1), wherein a valve cavity and a valve port (109) are provided in the valve body (1), the valve body (1) having an inlet (107) and an outlet (108) communicating with the valve cavity, the inlet (107) being connected to the outlet (108) through the valve port (109); Its features are: A cleaning box (2) is fixedly connected to the valve body (1). A motor (3) and a lifting gear column (4) are installed on the cleaning box (2). The output end of the motor (3) is connected to the lifting gear column (4) in a transmission connection. A screw barrel (201) is fixedly connected to the cleaning box (2). The lifting gear column (4) is provided with a screw part (401) that is threadedly connected to the screw barrel (201). The screw part (401) passes through the screw barrel (201) and is fixedly connected to a linkage rod (402). The linkage rod (402) passes through the cleaning box (2), extends into the valve cavity, and is fixedly connected to a sealing block (5). The sealing block (5) is sealed to the valve port (109). A screw (6) is provided at one end of the sealing block (5) near the valve port (109). A transmission nut (501) is threaded to the outer wall of the screw (6). A cleaning unit for cleaning the inner wall of the valve body (1) is provided between the transmission nut (501) and the sealing block (5). The cleaning unit includes multiple cleaning strips (502) and a drive strip (505) corresponding to the cleaning strips (502). The cleaning strips (502) are arranged in a ring around the periphery of the sealing block (5). The cleaning strips (502) are connected to the transmission nut (501) through the drive strip (505).

2. The mud discharge valve according to claim 1, characterized in that: The valve body (1) is provided with a discharge pipe (102) and an inlet pipe (101). The outlet (108) is located inside the discharge pipe (102), the inlet (107) is located inside the inlet pipe (101), and the valve port (109) is located at the junction of the discharge pipe (102) and the inner wall of the valve body (1). The diameter of the valve port (109) is smaller than the outer diameter of the sealing block (5).

3. A mud discharge valve according to claim 1, characterized in that: The cleaning strip (502) is hinged at one end away from the inner wall of the valve body (1) to the lower end of the sealing block (5), one end of the drive strip (505) is hinged to the cleaning strip (502), and the other end of the drive strip (505) is hinged to the outer wall of the transmission nut (501). The drive strip (505) and the cleaning strip (502) are connected near the sealing block (5).

4. A mud discharge valve according to claim 3, characterized in that: Both ends of the transmission nut (501) are bolted with bellows (504), and the bellows (504) are sleeved on the lead screw (6). Among them, the end of the bellows (504) on the side away from the sealing block (5) is rotatably sleeved on the outer peripheral wall of the screw (6).

5. A mud discharge valve according to claim 4, characterized in that: The sealing block (5) is provided with a ball joint (503) that corresponds to the lead screw (6), and the lead screw (6) is fixedly provided with a ball joint (601) that corresponds to the ball joint (503).

6. A mud discharge valve according to claim 2, characterized in that: The discharge pipe (102) is provided with a strip frame (103) inside, and a mounting column (104) is fixedly provided on the strip frame (103) and bolted to the lead screw (6).

7. A mud discharge valve according to claim 6, characterized in that: The outer wall of the strip frame (103) is fixedly provided with a limiting block (106), and the inner wall of the discharge pipe (102) is provided with a limiting groove (105) that corresponds to and cooperates with the limiting block (106). The limiting block (106) is slidably connected to the limiting groove (105).

8. A mud discharge valve according to claim 1, characterized in that: The valve body (1) is provided with a number of cleaning holes (204) at one end near the cleaning box (2). The cleaning holes (204) are arranged in a ring along the outer wall of the linkage rod (402). The valve cavity is connected to the interior of the cleaning box (2) through the cleaning holes (204).

9. A mud discharge valve according to claim 8, characterized in that: A cleaning pipe (202) is fixedly connected to the outer wall of the cleaning box (2). One end of the cleaning pipe (202) is connected to the inside of the cleaning box (2), and the other end of the cleaning pipe (202) is connected to the outside.

10. A mud discharge valve according to claim 9, characterized in that: The cleaning pipe (202) is bolted to a one-way valve (203) at the end away from the valve body (1).

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