Water hammer effect resistant valve

Abstract

The invention provides a water hammer effect resistant valve, and relates to the field of valves. The water hammer effect resistant valve comprises a valve shell, connecting pipes are fixedly installed at the left end and the right end of the valve shell, conducting pipes are fixedly inserted into the ends, away from the valve shell, of the connecting pipes, sealing pipes are arranged in the connecting pipes and can slide left and right relative to the inner walls of the connecting pipes, and threaded rods are fixedly installed at the front ends and the rear ends of the sealing pipes. The screw rod can slide left and right relative to the connecting pipe and can be fixed to the outer wall of the connecting pipe through a nut, two rotating shafts are arranged in the center of the valve shell, fixing shafts are fixedly installed at the ends, close to each other, of the two rotating shafts, and triangular plates are fixedly installed outside the fixing shafts. According to the water hammer effect resisting valve, by arranging the valve plate A, the valve plate B, the oval sleeve, the fixing shaft and the triangular plate, the effect that when the butterfly valve is gradually closed, the influence of a water hammer is gradually removed is achieved, and the problem that in the prior art, the butterfly valve is poor in resistance to the water hammer is solved.

Description

Technical Field

[0001] This invention relates to the field of valves, specifically to a valve resistant to water hammer. Background Technology

[0002] Water hammer occurs when pressurized water surges due to the inertia of the water flow during a sudden power outage or when a valve closes too quickly. The force generated by this surge is like a hammer blow. The force of the water hammer can be very strong, damaging valves and pumps. Therefore, pressurized pipelines often require devices at regular intervals to prevent water hammer damage. However, water hammer is a major cause of aging and damage to butterfly valves, and few butterfly valves are designed to prevent its effects. Their resistance to water hammer is poor, resulting in a shorter lifespan and lower usage rate in pressurized pipelines. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a valve resistant to water hammer, solving the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a valve for resisting water hammer, comprising a valve housing, wherein connecting pipes are fixedly installed at both ends of the valve housing, and a conductive pipe is fixedly inserted at the end of the connecting pipe away from the valve housing; a sealing pipe is provided inside each connecting pipe, and the sealing pipe can slide left and right relative to the inner wall of the connecting pipe; a screw is fixedly installed at both ends of the sealing pipe, and the screw can slide left and right relative to the connecting pipe; the screw can be fixed to the outer wall of the connecting pipe by a nut; two rotating shafts are provided at the center of the valve housing, and a fixed shaft is fixedly installed at the end of each rotating shaft that is close to each other; a triangular plate is fixedly installed on the outside of each fixed shaft.

[0005] The valve housing contains a valve plate A. A large, horizontally connected groove is located at the center of valve plate A. A ring of equally spaced limiting holes is formed around the circumference of the groove on valve plate A, extending horizontally through valve plate A. Limiting rings are fixedly fitted onto the circumferential surface of valve plate A. A valve plate B is located on the left side of valve plate A. Multiple crossbars are fixedly installed on the right side of valve plate B. The number of crossbars corresponds to the number and position of the limiting holes. The end of each crossbar away from valve plate B is inserted into a limiting hole. The crossbar can slide horizontally relative to the limiting hole, and a seal is maintained between the crossbar and the limiting hole. A sealing ring is fixedly installed on the circumferential surface. A baffle is fixedly installed at the center of the right side of valve plate B. The right end of the sealing ring mates with the inner wall of the left end of the limiting ring. An elliptical sleeve is provided on the right side of valve plate A. Fixing rods are fixedly installed on both the upper and lower sides of the elliptical sleeve. The left ends of the fixing rods are fixedly connected to the right side of valve plate A. Two fixing shafts are respectively inserted into the inside of the two elliptical sleeves. A triangular plate is located outside the elliptical sleeves. The fixing shafts can slide laterally inside the elliptical sleeves. Two horizontal plates are fixedly installed on the opposite sides of the two elliptical sleeves. The horizontal plates are located on the upper and lower sides of the triangular plate.

[0006] Preferably, the sealing tube has a U-shaped structure, with the U-shaped end of the sealing tube located on the side away from the valve housing.

[0007] Preferably, the outer side of the connecting pipe has two transverse sliding grooves, which are distributed front and back, and the screw is located in the sliding grooves, and the screw slides left and right relative to the sliding grooves.

[0008] Preferably, all the crossbars are perpendicular to valve plate A, and valve plate B is concentric and parallel to valve plate A.

[0009] Preferably, the position of the baffle corresponds to the position of the large groove, the baffle and the large groove are concentric, and the large groove can be sealed when the baffle moves to the right into the large groove.

[0010] Preferably, the elliptical sleeves are arranged horizontally, and the two elliptical sleeves are located on the same horizontal plane.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This anti-water hammer valve, by setting up valve plate A, valve plate B, elliptical sleeve, fixed shaft, and triangular plate, allows water to continuously impact valve plates A and B as valve plates A and B are slowly closed. At this time, water can flow between valve plates A and B with low resistance. Furthermore, the fixed shaft is not fixedly connected to valve plate A, allowing valve plate A to swing with the water flow. During this swing, the two horizontal plates are restricted by the triangular plate when rotating at a certain angle, and the elliptical sleeve provides a buffer distance. Therefore, when water hammer occurs, valve plate A swings accordingly, dissipating the force. Then, during continuous closing, valve plate B seals valve plate A, and the valve is closed. This achieves the effect of gradually reducing the impact of water hammer as the butterfly valve gradually closes, solving the problem of poor resistance to water hammer in existing butterfly valves.

[0012] 2. This anti-water hammer valve, through the setting of a sealing pipe, due to the special structure of the sealing pipe, the left sealing pipe will have a force to move to the right when water is flowing through it. When the sealing pipe moves to the right, it can contact the valve plate B to achieve a seal. At the same time, its position can also be adjusted by the cooperation of the screw and nut.

[0013] 3. This anti-water hammer valve, by setting a sealing ring and a limiting ring, the sealing ring and the limiting ring cooperate to close the gap between valve plate A and valve plate B when the sealing ring moves towards the limiting ring, thus achieving a sealing effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the structure of the present invention; Figure 3This is a partial structural diagram of the present invention; Figure 4 This is a front view of the structure of valve plate A and valve plate B of the present invention; Figure 5 This is a schematic diagram of the structure between valve plate A and valve plate B of the present invention; Figure 6 This is a schematic diagram of another side of the structure between valve plate A and valve plate B of the present invention; Figure 7 for Figure 4 Enlarged view of the structure at point A in the middle.

[0015] The components are: 1. Valve housing; 2. Connecting pipe; 3. Conducting pipe; 4. Sealing pipe; 5. Screw; 6. Nut; 7. Rotating shaft; 8. Fixed shaft; 9. Triangular plate; 10. Valve plate A; 11. Large groove; 12. Limiting hole; 13. Limiting ring; 14. Valve plate B; 15. Crossbar; 16. Sealing ring; 17. Baffle; 18. Elliptical sleeve; 19. Fixed rod; 20. Crossbar. Detailed Implementation

[0016] like Figure 1-7 As shown, an anti-water hammer valve includes a valve housing 1. Connecting pipes 2 are fixedly installed at both ends of the valve housing 1. A guide pipe 3 is fixedly inserted into the end of each connecting pipe 2 away from the valve housing 1. The guide pipe 3 connects to other pipelines. A sealing pipe 4 is provided inside each connecting pipe 2. The sealing pipe 4 can slide left and right relative to the inner wall of the connecting pipe 2. The sealing pipe 4 has a U-shaped structure, with the U-shaped end of the sealing pipe 4 located away from the valve housing 1. Screws 5 are fixedly installed at both ends of the sealing pipe 4. The screws 5 can slide left and right relative to the connecting pipe 2. The screws 5 can be fixed to the outer wall of the connecting pipe 2 by nuts 6. Two transverse sliding grooves are provided on the outer side of the connecting pipe 2, distributed front and back. The screws 5 are located in the sliding grooves and slide left and right relative to the sliding grooves. Two rotating shafts 7 are provided at the center of the valve housing 1. The rotating shafts 7 are responsible for installing the valve handle. A fixed shaft 8 is fixedly installed at the end of each rotating shaft 7 that is close to each other. A triangular plate 9 is fixedly installed on the outside of each fixed shaft 8.

[0017] The valve housing 1 has a valve plate A10 inside. A large groove 11, connecting the left and right sides, is opened in the center of the valve plate A10. A ring of equally spaced limiting holes 12 is opened on the circumference of the large groove 11 on the valve plate A10, extending through the valve plate A10. A limiting ring 13 is fixedly fitted onto the circumferential surface of the valve plate A10. A valve plate B14 is located on the left side of the valve plate A10. Multiple crossbars 15 are fixedly installed on the right side of the valve plate B14. The number of crossbars 15 corresponds to the number and position of the limiting holes 12. The end of each crossbar 15 away from the valve plate B14 is inserted into a limiting hole 12, allowing the crossbars 15 to slide left and right relative to the limiting holes 12. All crossbars 15 are perpendicular to the valve plate A10. The valve plate B14 is concentrically arranged and parallel to the valve plate A10. A seal is formed between the crossbars 15 and the limiting holes 12. A sealing ring 16 is fixedly installed on the circumferential surface of the valve plate B14. A baffle 17 is fixedly installed at the center of the right side of the valve plate A10. The position of the baffle 17 corresponds to the position of the large groove 11. The baffle 17 and the large groove 11 are concentric. When the baffle 17 moves to the right into the large groove 11, it can seal the large groove 11. The right end of the sealing ring 16 is engaged with the inner wall of the left end of the limiting ring 13. An elliptical sleeve 18 is provided on the right side of the valve plate A10. Fixing rods 19 are fixedly installed on both the upper and lower sides of the elliptical sleeve 18. The left ends of the fixing rods 19 are fixedly connected to the right side of the valve plate A10. Two fixing shafts 8 are respectively inserted into the inside of the two elliptical sleeves 18. The triangular plate 9 is located outside the elliptical sleeve 18. The fixing shafts 8 can slide laterally inside the elliptical sleeve 18. Two horizontal plates 20 are fixedly installed on the opposite sides of the two elliptical sleeves 18. The horizontal plates 20 are located on the upper and lower sides of the triangular plate 9. The elliptical sleeves 18 are arranged laterally, and the two elliptical sleeves 18 are located on the same horizontal plane.

[0018] During use, when valve plates A10 and B14 are slowly closed, the slowed water flow continuously impacts valve plates A10 and B14. At this time, water can flow between valve plates A10 and B14, and the water resistance is small. Moreover, the fixed shaft 8 is not fixedly connected to valve plate A10, and valve plate A10 can swing with the water flow. When swinging, the two horizontal plates 20 are restricted by the triangular plate 9 when rotating at a certain angle, and the elliptical sleeve 18 provides a certain buffer distance. Therefore, when water hammer occurs, valve plate A10 will swing accordingly to relieve the force. Then, when continuously closed, valve plate B14 seals valve plate A10, and the valve is closed. Due to the special structure of the sealing pipe 4, the left sealing pipe 4 will have a force to move to the right when water flows through it. When the sealing pipe 4 moves to the right, it can contact valve plate B14 to achieve a seal. At the same time, its position can be adjusted by the cooperation of screw 5 and nut 6.

[0019] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve resistant to water hammer, comprising a valve housing (1), characterized in that: The valve housing (1) is fixedly installed with connecting pipes (2) at both the left and right ends. The end of the connecting pipe (2) away from the valve housing (1) is fixedly connected with a conductive pipe (3). The interior of the connecting pipe (2) is provided with a sealing pipe (4). The sealing pipe (4) can slide left and right relative to the inner wall of the connecting pipe (2). The front and rear ends of the sealing pipe (4) are fixedly installed with screws (5). The screws (5) can slide left and right relative to the connecting pipe (2). The screws (5) can be fixed to the outer wall of the connecting pipe (2) by means of nuts (6). The valve housing (1) is provided with two rotating shafts (7) at the center. The ends of the two rotating shafts (7) that are close to each other are fixedly installed with a fixed shaft (8). The outside of the fixed shaft (8) is fixedly installed with a triangular plate (9). The valve housing (1) is provided with a valve plate A (10) inside. A large groove (11) is opened in the center of the valve plate A (10) and is connected to the left and right. A ring of equidistant limiting holes (12) is opened on the valve plate A (10) at the circumference of the large groove (11). The limiting holes (12) pass through the valve plate A (10) from left to right. A limiting ring (13) is fixedly sleeved on the circumferential surface of the valve plate A (10). A valve plate B (14) is provided on the left side of the valve plate A (10). A number of crossbars (15) are fixedly installed on the right side of the valve plate B (14). The number of crossbars (15) is the same as the number of limiting holes (12) and their positions correspond. The end of the crossbar (15) away from the valve plate B (14) is inserted into the limiting hole (12). The crossbar (15) can slide left and right relative to the limiting hole (12). The crossbar (15) and the limiting hole (12) are closely connected. A sealing ring (16) is fixedly installed on the circumferential surface of valve plate B (14). A baffle (17) is fixedly installed at the center of the right side of valve plate B (14). The right end of the sealing ring (16) is engaged with the inner wall of the left end of the limiting ring (13). An elliptical sleeve (18) is provided on the right side of valve plate A (10). Fixing rods (19) are fixedly installed on both the upper and lower sides of the elliptical sleeve (18). The left ends of the fixing rods (19) are fixedly connected to the right side of valve plate A (10). Two fixing shafts (8) are respectively inserted into the inside of the two elliptical sleeves (18). A triangular plate (9) is located outside the elliptical sleeve (18). The fixing shafts (8) can slide laterally inside the elliptical sleeve (18). Two horizontal plates (20) are fixedly installed on the opposite sides of the two elliptical sleeves (18). The horizontal plates (20) are located on the upper and lower sides of the triangular plate (9).

2. The anti-water hammer valve according to claim 1, characterized in that: The sealing tube (4) has a U-shaped structure, with the U-shaped end of the sealing tube (4) located on the side away from the valve housing (1).

3. The anti-water hammer valve according to claim 1, characterized in that: Two transverse grooves are provided on the outer side of the connecting pipe (2), which are distributed front and back. The screw (5) is located in the groove and slides left and right relative to the groove.

4. The anti-water hammer valve according to claim 1, characterized in that: The crossbars (15) are all perpendicular to the valve plate A (10), and the valve plate B (14) is concentric and parallel to the valve plate A (10).

5. The anti-water hammer valve according to claim 1, characterized in that: The position of the baffle (17) corresponds to the position of the large groove (11). The baffle (17) and the large groove (11) are concentric. When the baffle (17) moves to the right into the large groove (11), it can seal the large groove (11).

6. The anti-water hammer valve according to claim 1, characterized in that: The elliptical sleeve (18) is arranged horizontally, and the two elliptical sleeves (18) are located on the same horizontal plane.

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