Hydraulic drive structure of hydraulic quick-switching ball valve

Abstract

The utility model relates to a hydraulic drive structure of a hydraulic quick-switching ball valve, which comprises a water pipe and two ball seats rotatably mounted in the water pipe. A multi-stage sealing mechanism used for multi-stage interception of water flow in the water pipe is installed at the top of the water pipe, a hydraulic rod is controlled to drive a push block to move, a toothed bar and a connecting plate are connected to the surface of the push block, and when the toothed bar is driven to move, due to the fact that a tooth part on the surface of the toothed bar is meshed with two gears, the two gears rotate synchronously and drive two metal rods to rotate, the two metal rods can rotate synchronously; the two ball seats are controlled to rotate, so that the circulating holes in the ball seats are not communicated with the water pipe, and the ball seats rotate by 90 degrees; the connecting plate can push the upper piston to move in the liquid storage seat, due to the fact that the space between the upper piston and the lower piston is filled with oil liquid, the oil liquid is squeezed to drive the lower piston to move, and therefore the intercepting plate is pushed to enter the middle ring body, a round hole in the middle ring body is shielded and sealed, the two springs are stretched, and the two springs can assist in pulling up the lower piston in the retracting process.

Description

Technical Field

[0001] This utility model relates to the field of ball valve equipment technology, specifically to a hydraulic drive structure for a hydraulic quick-cut ball valve. Background Technology

[0002] Ball valves are characterized by their compact structure, reliable sealing, simple design, and convenient maintenance. Because their sealing surface and the ball are constantly in a closed state, they are not easily eroded by the medium, making them ideal for general working media such as water, solvents, acids, and natural gas. They are also suitable for media operating under harsh conditions, such as oxygen, hydrogen peroxide, methane, and ethylene. Ball valves are mainly used in pipelines for shut-off, distribution, and changing the flow direction of media. They only require a 90-degree rotation to achieve a tight seal. However, current ball valve technology uses a single interceptor element to achieve convection interception, lacking multiple interception mechanisms for water flow, leading to a decline in sealing performance over prolonged use.

[0003] For example, the authorized patent document with application number CN201921245401.8 discloses a ball valve built into a hydraulic actuator, which includes a valve body. Both ends of the valve body are integrally machined with mounting seats, and a sealing shell is integrally machined between the two mounting seats. A ball is disposed inside the valve body, and a sealing structure is disposed at the corner of the ball. A connecting shaft is welded to the top and bottom of the ball. The end of the connecting shaft away from the surface of the ball passes through the valve body and extends to the outside of the valve body, where a gear is welded.

[0004] The aforementioned patent uses a single interceptor to intercept the flow inside the ball valve, lacking multiple interception mechanisms for the water flow. This leads to a decrease in the sealing performance of the ball valve after prolonged use. Therefore, we need to provide a hydraulically driven structure for a hydraulically operated quick-cut ball valve. Utility Model Content

[0005] The purpose of this utility model is to provide a hydraulic drive structure for a hydraulic quick-cut ball valve, which sets up a multi-stage sealing mechanism inside the pipe. The multi-stage sealing mechanism means that multiple sealing surfaces are set up inside the water pipe. When the ball rotates to the closed position, these sealing surfaces will contact the water pipe simultaneously, forming multiple sealing guarantees, improving the overall sealing performance and reliability of the valve, and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulically driven structure for a hydraulically operated quick-cut ball valve, comprising:

[0007] Water pipe, and two ball joints that are rotatably installed inside the water pipe;

[0008] The top of the water pipe is equipped with a multi-stage sealing mechanism for multi-stage interception of water flow inside the pipe.

[0009] Both sides of the water pipe are equipped with debris interception mechanisms to protect the ball seat and reduce wear on the ball seat.

[0010] Preferably, the multi-stage sealing mechanism includes a central ring embedded in a water pipe, an interceptor plate slidably installed inside the central ring, a liquid storage seat installed on the top of the interceptor plate, metal rods fixedly installed on the tops of the two ball seats, gears fixedly installed at the upper ends of the two metal rods penetrating the top of the water pipe, a hydraulic drive for moving the interceptor plate and the two metal rods is provided on the top of the water pipe, and flow holes are opened inside the two ball seats.

[0011] Preferably, the hydraulic drive component includes a hydraulic rod disposed at the top of the water pipe, and a toothed rod is fixedly mounted on the extended end of the hydraulic rod by a push block, wherein the teeth on the surface of the toothed rod mesh with the surfaces of two gears.

[0012] Preferably, a cover is fixedly installed on the top of the water pipe, an auxiliary frame is fixedly installed inside the cover, the interior of the auxiliary frame is slidably installed with the surface of the toothed rod, and the hydraulic rod is embedded inside the cover.

[0013] Preferably, a lower piston is provided inside the liquid storage seat, and the bottom of the lower piston is fixedly installed to the top of the interceptor plate. An upper piston is installed inside the liquid storage seat, and the upper piston is connected to the push block through a connecting plate. The surfaces of the upper piston and the lower piston are both in close contact with the inner wall of the liquid storage seat.

[0014] Preferably, springs are engaged on both sides of the top of the lower piston, the tops of the two springs are engaged with the top of the inner wall of the reservoir, and collars are movably sleeved on the surface of the two springs, with the two collars fixedly installed on the inner wall of the reservoir.

[0015] Preferably, the debris interception mechanism includes interception cylinders disposed on both sides of the water pipe, each of the two interception cylinders having a filter screen embedded inside, and each of the two interception cylinders having an assembly ring fixedly installed on its surface, the surface of the assembly ring being threadedly installed to the inner wall of the water pipe.

[0016] Preferably, both of the interceptor tubes have strip-shaped reinforcing columns fixedly installed inside.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention features a multi-stage sealing mechanism within the pipe body. This means that multiple sealing surfaces are installed inside the water pipe. When the ball rotates to the closed position, these sealing surfaces simultaneously come into contact with the water pipe, forming multiple sealing guarantees and improving the overall sealing performance and reliability of the valve. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a three-dimensional sectional view of the water pipe of this utility model;

[0021] Figure 3 This is a perspective view of the hydraulic drive component of this utility model;

[0022] Figure 4 This is a three-dimensional sectional view of the liquid storage seat of this utility model.

[0023] In the diagram: 1. Water pipe; 2. Ball seat; 3. Multi-stage sealing mechanism; 31. Middle ring; 32. Interceptor plate; 33. Liquid reservoir; 34. Metal rod; 35. Gear; 30. Hydraulic drive component; 301. Hydraulic rod; 302. Push block; 303. Gear rack; 4. Debris interception mechanism; 41. Interceptor cylinder; 42. Filter screen; 43. Assembly ring; 5. Cover; 6. Auxiliary frame; 7. Lower piston; 8. Upper piston; 9. Connecting plate; 10. Spring; 11. Collar; 12. Reinforcing column. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This utility model provides a technical solution: a hydraulic drive structure for a hydraulic quick-cut ball valve, comprising:

[0026] Water pipe 1, and two ball seats 2 rotatably installed inside water pipe 1;

[0027] The top of the water pipe 1 is equipped with a multi-stage sealing mechanism 3 for multi-stage interception of water flow inside the water pipe 1;

[0028] Both sides of the water pipe 1 are equipped with debris interception mechanisms 4 to protect the ball seat 2 and reduce wear on the ball seat 2;

[0029] Specifically, a multi-stage sealing mechanism 3 is set inside the pipe body. The multi-stage sealing mechanism 3 means that multiple sealing surfaces are set inside the water pipe 1. When the ball rotates to the closed position, these sealing surfaces will contact the water pipe 1 simultaneously, forming multiple sealing guarantees and improving the overall sealing performance and reliability of the valve.

[0030] The multi-stage sealing mechanism 3 includes a central ring 31 embedded in the water pipe 1. An interceptor plate 32 is slidably installed inside the central ring 31. A liquid storage seat 33 is installed on the top of the interceptor plate 32. Metal rods 34 are fixedly installed on the top of the two ball seats 2. The upper ends of the two metal rods 34 pass through the top of the water pipe 1 and are fixedly installed with gears 35. A hydraulic drive component 30 for the movement of the interceptor plate 32 and the two metal rods 34 is provided on the top of the water pipe 1. Flow holes are opened inside the two ball seats 2.

[0031] In this embodiment, the control hydraulic rod 301 drives the push block 302 to move. The push block 302 is connected to the toothed rod 303 and the connecting plate 9. When the toothed rod 303 moves, the teeth on the surface of the toothed rod 303 mesh with the two gears 35. The two gears 35 rotate synchronously and drive the two metal rods 34 to rotate, controlling the two ball seats 2 to rotate, so that the flow hole in the ball seat 2 is not connected to the water pipe 1. The ball seat 2 rotates ninety degrees. At the same time, the connecting plate 9 pushes the upper piston 8 to move in the liquid storage seat 33. Since there is oil between the upper piston 8 and the lower piston 7, the oil is squeezed and drives the lower piston 7 to move, thereby pushing the intercepting plate 32 into the middle ring body 31, blocking and sealing the round hole in the middle ring body 31, and stretching the two springs 10. When retracted, the two springs 10 can assist in pulling up the lower piston 7.

[0032] Furthermore, assembly rings 43 are threadedly installed on both sides of the water pipe 1. An interceptor cylinder 41 with a filter screen 42 is installed inside the assembly ring 43 to intercept large particles of impurities in the water flow and reduce the impact of debris on the ball seat 2.

[0033] The hydraulic drive unit 30 includes a hydraulic rod 301 disposed at the top of the water pipe 1. The extended end of the hydraulic rod 301 is fixedly mounted with a rack 303 by a push block 302. The teeth on the surface of the rack 303 mesh with the surfaces of two gears 35.

[0034] In this embodiment, the hydraulic rod 301 drives the push block 302 to move. The push block 302 is connected to the toothed rod 303 and the connecting plate 9. When the toothed rod 303 moves, the teeth on the surface of the toothed rod 303 mesh with the two gears 35. The two gears 35 rotate synchronously and drive the two metal rods 34 to rotate, controlling the two ball seats 2 to rotate, so that the flow hole inside the ball seat 2 is not connected to the water pipe 1, and the ball seat 2 rotates ninety degrees.

[0035] A cover 5 is fixedly installed on the top of the water pipe 1. An auxiliary frame 6 is fixedly installed inside the cover 5. The inside of the auxiliary frame 6 is slidably installed with the surface of the toothed rod 303, and the hydraulic rod 301 is embedded inside the cover 5.

[0036] Furthermore, an auxiliary frame 6 is provided, which is slidably mounted inside the rack 303 and on the surface of the rack 303, thus providing auxiliary guidance for the sliding movement of the rack 303.

[0037] The reservoir 33 is equipped with a lower piston 7. The bottom of the lower piston 7 is fixedly installed with the top of the interceptor plate 32. The reservoir 33 is equipped with an upper piston 8. The upper piston 8 is connected to the push block 302 through a connecting plate 9. The surfaces of the upper piston 8 and the lower piston 7 are in close contact with the inner wall of the reservoir 33.

[0038] It is worth noting that the connecting plate 9 will push the upper piston 8 to move within the reservoir 33. Since there is oil between the upper piston 8 and the lower piston 7, the oil will be squeezed and drive the lower piston 7 to move, thereby pushing the interceptor plate 32 into the middle ring body 31 to block and seal the round hole in the middle ring body 31.

[0039] Springs 10 are attached to both sides of the top of the lower piston 7. The tops of the two springs 10 are attached to the top of the inner wall of the reservoir 33. The surfaces of the two springs 10 are movably fitted with collars 11. The two collars 11 are fixedly installed on the inner wall of the reservoir 33.

[0040] It should be noted that the circular hole in the middle ring body 31 is blocked and sealed, and the two springs 10 are stretched. When retracted, the two springs 10 can assist in pulling up the lower piston 7.

[0041] The debris interception mechanism 4 includes interception cylinders 41 disposed on both sides of the water pipe 1. Each interception cylinder 41 has a filter screen 42 embedded inside, and each interception cylinder 41 has an assembly ring 43 fixedly installed on its surface. The surface of the assembly ring 43 is threaded to the inner wall of the water pipe 1.

[0042] Furthermore, both sides of the water pipe 1 are threaded with assembly rings 43, and an interception cylinder 41 with a filter screen 42 is installed inside the assembly ring 43 to intercept large particles of impurities in the water flow and reduce the impact of debris on the ball seat 2.

[0043] Both interceptor tubes 41 have strip-shaped reinforcing columns 12 fixedly installed inside;

[0044] To facilitate the rotation adjustment of the interception cylinder 41, a reinforcing column 12 is provided on the surface of the interception cylinder 41.

[0045] This device controls the hydraulic rod 301 to move the push block 302. The push block 302 is connected to the toothed rod 303 and the connecting plate 9. When the toothed rod 303 moves, the teeth on the surface of the toothed rod 303 mesh with two gears 35. The two gears 35 rotate synchronously and drive the two metal rods 34 to rotate, controlling the two ball seats 2 to rotate. This prevents the flow holes in the ball seats 2 from connecting with the water pipe 1. The ball seats 2 rotate 90 degrees. At the same time, the connecting plate 9 pushes the upper piston 8 to move in the liquid reservoir 33. Since there is oil between the upper piston 8 and the lower piston 7, the oil is squeezed and drives the lower piston 7 to move, thereby pushing the intercepting plate 32 into the middle ring body 31, blocking and sealing the round hole in the middle ring body 31, and stretching the two springs 10. When retracted, the two springs 10 can assist in pulling up the lower piston 7.

[0046] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic drive structure for a hydraulic quick-cut ball valve, characterized in that, include: Water pipe (1), and two ball seats (2) rotatably installed inside the water pipe (1); The top of the water pipe (1) is equipped with a multi-stage sealing mechanism (3) for multi-stage interception of water flow inside the water pipe (1). Both sides of the water pipe (1) are provided with debris interception mechanisms (4) to protect the ball seat (2) and reduce wear on the ball seat (2). The multi-stage sealing mechanism (3) includes a central ring (31) embedded in the water pipe (1), an interceptor plate (32) is slidably installed inside the central ring (31), a liquid storage seat (33) is installed on the top of the interceptor plate (32), a metal rod (34) is fixedly installed on the top of each of the two ball seats (2), the upper ends of the two metal rods (34) penetrate the top of the water pipe (1) and a gear (35) is fixedly installed thereon, a hydraulic drive component (30) for driving the interceptor plate (32) and the two metal rods (34) is provided on the top of the water pipe (1), and a flow hole is opened inside each of the two ball seats (2).

2. The hydraulic drive structure for the hydraulic quick-cut ball valve according to claim 1, characterized in that: The hydraulic drive unit (30) includes a hydraulic rod (301) disposed on the top of the water pipe (1). The extended end of the hydraulic rod (301) is fixedly mounted with a rack (303) by a push block (302). The teeth on the surface of the rack (303) mesh with the surfaces of two gears (35).

3. The hydraulic drive structure for the hydraulic quick-cut ball valve according to claim 2, characterized in that: A cover (5) is fixedly installed on the top of the water pipe (1), and an auxiliary frame (6) is fixedly installed inside the cover (5). The inside of the auxiliary frame (6) is slidably installed with the surface of the toothed rod (303), and the hydraulic rod (301) is embedded inside the cover (5).

4. The hydraulic drive structure for the hydraulic quick-cut ball valve according to claim 1, characterized in that: The reservoir (33) is equipped with a lower piston (7), the bottom of which is fixedly installed with the top of the interceptor plate (32). The reservoir (33) is equipped with an upper piston (8), which is connected to the push block (302) by a connecting plate (9). The surfaces of the upper piston (8) and the lower piston (7) are in close contact with the inner wall of the reservoir (33).

5. The hydraulic drive structure for the hydraulic quick-cut ball valve according to claim 4, characterized in that: Springs (10) are attached to both sides of the top of the lower piston (7). The tops of the two springs (10) are attached to the top of the inner wall of the reservoir (33). The surfaces of the two springs (10) are movably fitted with collars (11). The two collars (11) are fixedly installed on the inner wall of the reservoir (33).

6. The hydraulic drive structure for the hydraulic quick-cut ball valve according to claim 1, characterized in that: The debris interception mechanism (4) includes interception cylinders (41) set on both sides of the water pipe (1). The interior of each of the two interception cylinders (41) is embedded with a filter screen (42), and an assembly ring (43) is fixedly installed on the surface of each of the two interception cylinders (41). The surface of the assembly ring (43) is threaded to the inner wall of the water pipe (1).

7. The hydraulic drive structure for the hydraulic quick-cut ball valve according to claim 6, characterized in that: Both of the interceptor tubes (41) have strip-shaped reinforcing columns (12) fixedly installed inside.

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