Anti-silting blow-down ball valve

Abstract

An anti-silting blow-down ball valve comprises a valve body, a spherical opening and closing piece arranged in the valve body and an opening and closing hole formed in the spherical opening and closing piece, a water inlet connector is arranged on the right side of the valve body, a water outlet connector is arranged on the left side of the valve body, a valve rod is arranged at the upper end of the spherical opening and closing piece, and the upper end of the valve rod upwards penetrates out of the valve body and is provided with a handle. The lower surface of the left part of the water inlet joint is provided with a pollution discharge joint communicated with the internal space of the water inlet joint; a sealing cover matched with the pollution discharge joint is screwed outside the lower end of the pollution discharge joint; a shifting groove is formed in the upper surface of the left part of the pollution discharge joint; a shifting hole communicated with the inner space of the water inlet connector is formed in the middle of the bottom of the shifting groove; and a moving seat is arranged above the middle part of the shifting groove. According to the anti-silting blow-down ball valve, under the condition that the ball valve is not detached from a pipeline of a blow-down system, impurities accumulated in the water inlet connector can be rapidly cleaned, and the anti-silting effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of valves, and in particular to an anti-sludge discharge ball valve. Background Technology

[0002] A ball valve is a type of valve. To open a ball valve, the valve stem is turned by the handle. When the valve stem turns, the spherical opening and closing element inside the ball valve body rotates synchronously. When the opening and closing orifice of the spherical opening and closing element is coaxial with the water outlet and water inlet on the left and right sides of the ball valve, the ball valve is in a fully open state. The water inlet can be connected to the water outlet through the opening and closing orifice of the spherical opening and closing element. When the spherical opening and closing element rotates back in the opposite direction with the opening and closing orifice, the two ends of the opening and closing orifice will be blocked and sealed by the inner wall of the valve body. At this time, the ball valve is in a closed state.

[0003] Therefore, to open a ball valve, the spherical opening and closing element must be able to rotate smoothly. However, when the ball valve is used as a drain valve, as the ball valve is in the closed state, sewage will be trapped in the inlet of the ball valve. At this time, impurities in the sewage will accumulate. The impurities will continuously accumulate on the outer ring of the spherical opening and closing element near the inlet. As more and more impurities accumulate, the resistance they can form will increase. Eventually, the spherical opening and closing element will be obstructed by the accumulated impurities when rotating, making it difficult for the spherical opening and closing element to rotate and affecting the flow of sewage during drainage. If the impurities accumulated in the inlet are to be cleaned, the ball valve can only be removed from the sewage system pipeline. This cleaning method is extremely troublesome, and the ball valve must be reinstalled on the sewage system pipeline afterward, which seriously affects the cleaning efficiency. Summary of the Invention

[0004] The present invention aims to solve the existing technical problem by providing an anti-sludge discharge ball valve that can quickly clean impurities accumulated in the inlet connector without removing the ball valve from the sewage system pipe, thereby achieving the anti-sludge effect.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] This utility model discloses an anti-sludge discharge ball valve, including a valve body, a spherical opening and closing element disposed within the valve body, and an opening and closing hole disposed on the spherical opening and closing element. An inlet connector is provided on the right side of the valve body, and an outlet connector is provided on the left side of the valve body. A valve stem is provided at the upper end of the spherical opening and closing element, with the upper end of the valve stem extending upwards to the valve body and having a handle. A discharge connector communicating with its internal space is provided on the lower surface of the left part of the inlet connector; a matching sealing cap is screwed onto the lower end of the discharge connector; a displacement groove is provided on the upper surface of the left part of the discharge connector; and a hole communicating with the internal space of the inlet connector is provided in the center of the bottom of the displacement groove. The system includes a through-hole for displacement; a movable seat located above the center of the displacement groove; a displacement head located within the displacement hole at the center of the lower end face of the movable seat, with a displacement gap between the outer wall of the displacement head and the displacement hole; a displacement structure matching the displacement groove on the lower outer wall of the movable seat; a telescopic rod at the center of the movable seat, which can move up and down; a pressing head at the upper end of the telescopic rod; and a cleaning head located within the water inlet connector at the lower end of the telescopic rod. The movable seat can move left and right along the trajectory of the bottom of the displacement groove via the displacement structure, thereby allowing the cleaning head to move left and right.

[0007] A spring hole is provided at the center of the upper end face of the movable seat; a guide hole communicating with the internal space of the water inlet connector is provided at the center of the bottom of the spring hole; a matching limiting head is provided in the upper opening of the spring hole; a hexagonal disassembly hole is provided at the center of the limiting head; the telescopic rod passes through the guide hole, the spring hole and the disassembly hole; a limiting part that fits against the lower surface of the limiting head is provided on the outer wall of the telescopic rod; a return spring is sleeved on the telescopic rod between the lower surface of the limiting part and the bottom of the spring hole.

[0008] There is a pressing gap between the lower surface of the pressing head and the upper surface of the limiting head.

[0009] The displacement structure includes a left fixed foot located on the left side of the lower end of the movable base and a right fixed foot located on the right side of the lower end of the movable base. The lower surface of both the left and right fixed feet are in contact with the bottom of the displacement groove. The left fixed foot has a left elongated oval hole, and the right fixed foot has a right elongated oval hole. The left side of the bottom of the displacement groove has a left screw hole corresponding to the position of the left elongated oval hole, and the right side of the bottom of the displacement groove has a right screw hole corresponding to the position of the right elongated oval hole. A left screw passes downward through the left elongated oval hole and is screwed into the left screw hole. The head of the left screw presses against the upper surface of the left fixed foot, and the left screw is in contact with the inner wall of the left side of the left elongated oval hole. A right screw passes downward through the right elongated oval hole and is screwed into the right screw hole. The head of the right screw presses against the upper surface of the right fixed foot, and the right screw is in contact with the inner wall of the left side of the right elongated oval hole.

[0010] The telescopic rod has a square head at the center of its upper and lower ends; the pressing head and the cleaning head each have a square hole at their center that matches the square head; the pressing head and the square head at the center of the upper end of the telescopic rod, and the cleaning head and the square head at the center of the lower end of the telescopic rod are all fixed together by a fastening screw.

[0011] The outer wall of the cleaning head is provided with a spiral blade or several cutting blades evenly distributed around the circumference.

[0012] The bottom of the displacement groove is provided with an annular sealing groove in the middle, which surrounds the upper opening of the displacement hole; a matching sealing ring is provided inside the sealing groove.

[0013] The inner wall of the guide hole is provided with several annular grooves that are evenly distributed axially; and an O-ring that matches the groove is provided in the annular groove.

[0014] The beneficial effects of this utility model are:

[0015] Compared with the prior art, when siltation occurs at the end of the ball-shaped opening and closing component of the anti-siltation drain ball valve with the structure of this utility model near the water inlet connector, the telescopic rod can be pressed down and rotated by pressing the pressing head. As the telescopic rod moves down and rotates, the cleaning head will move down and rotate simultaneously. Thus, the rotating cleaning head can effectively break up the accumulated impurities and disperse them. If the siltation is more severe, the sealing cap screwed to the lower end of the drain connector can be unscrewed first, so that the cleaning head can remove part of the accumulated impurities through the drain connector during the downward movement. Accumulated impurities are squeezed directly downwards to the outside. When using the drain connector, a water collection bucket can be placed directly below the drain connector to facilitate the centralized treatment of discharged impurities. As a large amount of impurities accumulated on the outer ring of the spherical opening and closing part are cleaned, other impurities will also be flushed out under the impact of the water flow, thereby effectively preventing accumulated impurities from affecting the rotation of the spherical opening and closing part and ensuring that the spherical opening and closing part can rotate normally. The entire cleaning process does not require disassembling the ball valve from the sewage system pipe, and can quickly clean the impurities accumulated in the water inlet connector, achieving the effect of preventing siltation. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the anti-siltation sewage ball valve of this utility model;

[0017] Figure 2 This is a partial cross-sectional view of the anti-sludge discharge ball valve of this utility model. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0019] Please see Figure 1 , Figure 2 This utility model provides an anti-sludge discharge ball valve, including a valve body 1, a spherical opening and closing element 2 disposed within the valve body 1, and an opening and closing hole 3 disposed on the spherical opening and closing element 2. A water inlet connector 4 is provided on the right side of the valve body 1, and a water outlet connector 5 is provided on the left side of the valve body 1. A valve stem 6 is provided at the upper end of the spherical opening and closing element 2, with the upper end of the valve stem 6 extending upwards to the outside of the valve body 1 and having a handle 7. A discharge connector 8, communicating with its internal space, is provided on the lower left surface of the water inlet connector 4. A matching sealing cap 9 is screwed onto the lower end of the discharge connector 8. A displacement groove 10 is provided on the upper left surface of the discharge connector 8. A displacement hole 1, communicating with the internal space of the water inlet connector 4, is provided in the center of the bottom of the displacement groove 10. 1; A movable seat 12 is located above the middle of the displacement groove 10; A displacement head 13 is located in the displacement hole 11 at the center of the lower end face of the movable seat 12, and a displacement gap 14 is provided between the outer wall of the displacement head 13 and the displacement hole 11; A displacement structure matching the displacement groove 10 is provided on the lower outer wall of the movable seat 12; A telescopic rod 15 is located at the center of the movable seat 12, and the telescopic rod 15 can move up and down; A pressing head 16 is provided at the upper end of the telescopic rod 15; A cleaning head 17 located in the water inlet connector 4 is provided at the lower end of the telescopic rod 15; The movable seat 12 can move left and right along the bottom trajectory of the displacement groove 10 through the displacement structure, so that the cleaning head 17 can move left and right.

[0020] A spring hole 18 is provided at the center of the upper end face of the movable seat 12; a guide hole 19 communicating with the internal space of the water inlet connector 4 is provided at the center of the bottom of the spring hole 18; a matching limiting head 20 is provided in the upper end opening of the spring hole 18; a hexagonal disassembly hole 21 is provided at the center of the limiting head 20; the telescopic rod 15 passes through the guide hole 19, the spring hole 18 and the disassembly hole 21; a limiting part 22 that fits against the lower surface of the limiting head 20 is provided on the outer wall of the telescopic rod 15; a return spring 23 located between the lower surface of the limiting part 22 and the bottom of the spring hole 18 is sleeved on the telescopic rod 15.

[0021] There is a pressing gap 24 between the lower surface of the pressing head 16 and the upper surface of the limiting head 20.

[0022] The displacement structure includes a left fixed foot 25 located on the left side of the lower end of the movable base 12 and a right fixed foot 26 located on the right side of the lower end of the movable base 12. The lower surfaces of both the left fixed foot 25 and the right fixed foot 26 are in contact with the bottom of the displacement groove 10. The left fixed foot 25 has a left elongated oval hole 27, and the right fixed foot 26 has a right elongated oval hole 28. The left side of the bottom of the displacement groove 10 has a left screw hole 29 corresponding to the position of the left elongated oval hole 27, and the right side of the bottom of the displacement groove 10 has a left screw hole 29. A right screw hole 30 is provided, corresponding to the position of the right oblong hole 28; a left screw 31 passes downward through the left oblong hole 27 and is screwed into the left screw hole 29, the head of the left screw 31 presses against the upper surface of the left fixing foot 25, and the left screw 31 is in contact with the left inner wall of the left oblong hole 27; a right screw 32 passes downward through the right oblong hole 28 and is screwed into the right screw hole 30, the head of the right screw 32 presses against the upper surface of the right fixing foot 26, and the right screw 32 is in contact with the left inner wall of the right oblong hole 28.

[0023] The telescopic rod 15 has a square head 33 at the center of its upper and lower ends; the pressing head 16 and the cleaning head 17 each have a square hole 34 at the center of their lower and upper ends that matches the square head 33; the pressing head 16 and the square head 33 at the center of the upper end of the telescopic rod 15, and the cleaning head 17 and the square head 33 at the center of the lower end of the telescopic rod 15 are all fixed together by a fastening screw 35.

[0024] The outer wall of the cleaning head 17 is provided with a spiral blade or several cutting blades 36 evenly distributed around the circumference.

[0025] The displacement groove 10 has an annular sealing groove 37 at the center of its bottom, which encloses the upper opening of the displacement hole 11; a matching sealing ring 38 is provided inside the sealing groove 37.

[0026] The inner wall of the guide hole 19 is provided with a plurality of annular grooves 39 evenly distributed in the axial direction; an O-ring 40 matching it is provided in the annular groove 39.

[0027] The method of using this utility model is as follows:

[0028] When siltation occurs at the end of the spherical opening / closing part 2 near the water inlet connector 4, the telescopic rod 15 can be pressed down and rotated by the pressing head 16. As the telescopic rod 15 moves down and rotates, the cleaning head 17 will move down and rotate synchronously. The rotating cleaning head 17 can effectively break up the accumulated impurities and disperse them. If the siltation is severe, the sealing cover 9 screwed to the lower end of the drain connector 8 can be unscrewed first, so that the cleaning head 17 can directly remove some of the accumulated impurities through the drain connector 8 during its downward movement. Squeezing downwards to the outside, when using the drain connector 8, a water collection bucket can be placed directly below the drain connector 8 to facilitate the centralized treatment of discharged impurities. As a large amount of impurities accumulated on the outer ring of the ball valve 2 are cleaned, other impurities will also be flushed out under the impact of the water flow, thereby effectively preventing the accumulated impurities from affecting the rotation of the ball valve 2 and ensuring that the ball valve 2 can rotate normally. The entire cleaning process does not require disassembling the ball valve from the sewage system pipe, and the impurities accumulated in the inlet connector 4 can be quickly cleaned, achieving the effect of preventing siltation.

[0029] During the actual cleaning process, the impurities tend to concentrate near the end of the ball-type opening and closing part 2 adjacent to the water inlet connector 4. In this case, the position of the moving seat 12 can be changed via the shifting structure, thereby changing the position of the cleaning head 17. This makes it easier for the cleaning head 17 to apply pressure to the accumulated impurities and break them up. To change the position of the moving seat 12, simply rotate the left screw 31 and right screw 32 upwards. This removes the downward pressure from the heads of both screws, allowing the left and right fixed feet 25 and 26 on the lower left and right sides of the moving seat 12 to move. At this time, the left fixed foot 25... 5. Following the inner wall trajectory of the left elongated hole 27, the right fixed foot 26 follows the inner wall trajectory of the right elongated hole 28, while the lower end face of the moving seat 12 moves to the left against the bottom of the shifting groove 10. The shifting gap 14 between the outer wall of the shifting head 13 and the shifting hole 11 ensures that the moving seat 12 can move smoothly to the left. When the moving seat 12 moves to the left, the cleaning head 17 moves to the left simultaneously. After the cleaning head 17 moves to the actual required position, the left screw 31 and the right screw 32 can be tightened downwards. Then, the cleaning head 17 can be pressed down again by pressing the pressing head 16 or rotating the cleaning head 17 to achieve the effect of cleaning impurities.

[0030] The limiting head 20 has a hexagonal disassembly hole 21 at its center. When the telescopic rod 15 does not pass through the disassembly hole 21, one end of the Allen wrench can be inserted into the disassembly hole 21. At this time, the limiting head 20 can be easily rotated to achieve quick disassembly and assembly of the limiting head 20.

[0031] The telescopic rod 15 has a limiting part 22 on its outer wall that fits against the lower surface of the limiting head 20. The telescopic rod 15 is fitted with a return spring located between the lower surface of the limiting part 22 and the bottom of the spring hole 18. When the telescopic rod 15 moves down, the limiting part 22 moves down synchronously. At this time, the return spring 23 is compressed downward and generates elastic force. This elastic force can help the telescopic rod 15 and the cleaning head 17 to move up and reset quickly after the user releases the pressing head 16.

[0032] There is a pressing gap 24 between the lower surface of the pressing head 16 and the upper surface of the limiting head 20. The existence of the pressing gap 24 can effectively ensure that the pressing head 16 has sufficient downward stroke, thereby ensuring that the cleaning head has sufficient downward stroke and ensuring the cleaning range of the cleaning head 17.

[0033] A square head 33 is provided at the center of the upper end face and the center of the lower end face of the telescopic rod 15. A square hole 34 matching the square head 33 is provided at the center of the lower surface of the pressing head 16 and the center of the upper surface of the cleaning head 17. The pressing head 16 and the square head 33 at the center of the upper end face of the telescopic rod 15, and the cleaning head 17 and the square head 33 at the center of the lower end face of the telescopic rod 15 are fixed by a fastening screw 35. This fixing method can not only effectively ensure the stability between the upper end of the telescopic rod 15 and the pressing head 16, and between the lower end of the telescopic rod 15 and the cleaning head 17, but also facilitate the disassembly and assembly of the pressing head 16 and the cleaning head 17.

[0034] The outer wall of the cleaning head 17 is provided with a spiral blade or several cutting blades 36 evenly distributed in a circle. When the cleaning head 17 rotates, the spiral blade or cutting blades 36 rotate synchronously, which effectively ensures the cutting and cleaning effect of the cleaning head 17 and makes it easier to break up the accumulated impurities.

[0035] The bottom of the displacement groove 10 is provided with an annular sealing groove 37. The sealing groove 37 surrounds the upper opening of the displacement hole 11. A matching sealing ring 38 is provided inside the sealing groove 37. The presence of the sealing ring 38 can effectively ensure the sealing between the lower end face of the moving seat 12 and the bottom of the displacement groove 10, and prevent water leakage.

[0036] The inner wall of the guide hole 19 is provided with several annular grooves 39 evenly distributed in the axial direction. The annular grooves 39 are provided with matching O-rings 40. The presence of O-rings 40 can effectively seal the outer wall of the telescopic rod 15 and the inner wall of the guide hole 19, and prevent water leakage.

Claims

1. A silt-prevention and sewage discharge ball valve, comprising a valve body, a spherical opening and closing element disposed within the valve body, and an opening and closing hole disposed on the spherical opening and closing element, wherein an inlet connector is provided on the right side of the valve body, an outlet connector is provided on the left side of the valve body, a valve stem is provided at the upper end of the spherical opening and closing element, and the upper end of the valve stem extends upward to the valve body and is provided with a handle, characterized in that: The lower left side of the water inlet connector is provided with a drain connector that communicates with its internal space; a matching sealing cap is screwed onto the lower end of the drain connector; a displacement groove is provided on the upper left side of the drain connector. The shifting groove has a shifting hole at the center of its bottom that communicates with the internal space of the water inlet connector; a movable seat is located above the center of the shifting groove; a shifting head is located in the shifting hole at the center of the lower end face of the movable seat, and there is a shifting gap between the outer wall of the shifting head and the shifting hole; a shifting structure matching the shifting groove is provided on the lower outer wall of the movable seat; a telescopic rod is located at the center of the movable seat, and the telescopic rod can move up and down; a pressing head is provided at the upper end of the telescopic rod; a cleaning head is located in the water inlet connector at the lower end of the telescopic rod; the movable seat can move left and right along the trajectory of the bottom of the shifting groove through the shifting structure, thereby allowing the cleaning head to move left and right.

2. The anti-sludge discharge ball valve according to claim 1, characterized in that: A spring hole is provided at the center of the upper end face of the movable seat; a guide hole communicating with the internal space of the water inlet connector is provided at the center of the bottom of the spring hole; a matching limiting head is provided in the upper opening of the spring hole; a hexagonal disassembly hole is provided at the center of the limiting head; the telescopic rod passes through the guide hole, the spring hole and the disassembly hole; a limiting part that fits against the lower surface of the limiting head is provided on the outer wall of the telescopic rod; a return spring is sleeved on the telescopic rod between the lower surface of the limiting part and the bottom of the spring hole.

3. The anti-sludge discharge ball valve according to claim 2, characterized in that: There is a pressing gap between the lower surface of the pressing head and the upper surface of the limiting head.

4. The anti-sludge discharge ball valve according to claim 1, characterized in that: The displacement structure includes a left fixed foot located on the left side of the lower end of the movable base and a right fixed foot located on the right side of the lower end of the movable base. The lower surface of both the left and right fixed feet are in contact with the bottom of the displacement groove. The left fixed foot has a left elongated oval hole, and the right fixed foot has a right elongated oval hole. The left side of the bottom of the displacement groove has a left screw hole corresponding to the position of the left elongated oval hole, and the right side of the bottom of the displacement groove has a right screw hole corresponding to the position of the right elongated oval hole. A left screw passes downward through the left elongated oval hole and is screwed into the left screw hole. The head of the left screw presses against the upper surface of the left fixed foot, and the left screw is in contact with the inner wall of the left side of the left elongated oval hole. A right screw passes downward through the right elongated oval hole and is screwed into the right screw hole. The head of the right screw presses against the upper surface of the right fixed foot, and the right screw is in contact with the inner wall of the left side of the right elongated oval hole.

5. The anti-sludge discharge ball valve according to claim 1, characterized in that: The telescopic rod has a square head at the center of its upper and lower ends; the pressing head and the cleaning head each have a square hole at their center that matches the square head; the pressing head and the square head at the center of the upper end of the telescopic rod, and the cleaning head and the square head at the center of the lower end of the telescopic rod are all fixed together by a fastening screw.

6. The anti-sludge discharge ball valve according to claim 1, characterized in that: The outer wall of the cleaning head is provided with a spiral blade or several cutting blades evenly distributed around the circumference.

7. The anti-sludge discharge ball valve according to claim 1, characterized in that: The bottom of the displacement groove is provided with an annular sealing groove in the middle, which surrounds the upper opening of the displacement hole; a matching sealing ring is provided inside the sealing groove.

8. The anti-sludge discharge ball valve according to claim 2, characterized in that: The inner wall of the guide hole is provided with several annular grooves that are evenly distributed axially; and an O-ring that matches the groove is provided in the annular groove.

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