Safe and leakage-free ball valve

Abstract

The invention relates to the technical field of ball valves, and particularly discloses a safe and leakage-free ball valve which comprises a first valve body and a second valve body which are connected with each other, and a ball body is arranged between the first valve body and the second valve body; sealing gaskets are arranged between the first valve body and the ball body and between the second valve body and the ball body; a self-adaptive compensation mechanism is arranged between each sealing gasket and the first valve body and between each sealing gasket and the second valve body, and when the sealing gaskets are abraded, the self-adaptive compensation mechanisms drive the corresponding sealing gaskets to make contact with the ball body, so that the sealing performance of the ball valve is improved. By arranging the self-adaptive compensation mechanism, the abrasion condition of the sealing gasket can be automatically compensated, so that the sealing gasket is always kept in a sealing state, the replacement frequency of the sealing gasket can be greatly reduced, the practicability of the ball valve is improved, meanwhile, the sealing gasket does not need to be frequently replaced, the effect of saving cost can be achieved, and the service life of the ball valve is prolonged. And the whole ball valve is convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, in particular to a safe and leak-free ball valve. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems and have functions such as shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. Valves used in fluid control systems have a wide variety of varieties and specifications, from the simplest shut-off valves to various valves used in extremely complex automatic control systems. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves, chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, duplex steel valves, plastic valves, non-standard customized valves, etc. according to their materials.

[0003] Ball valves are mainly used in pipelines to cut off, distribute and change the flow direction of the medium. They can be closed tightly by simply rotating 90 degrees and using a very small torque. Ball valves are most suitable for use as switches and shut-off valves. Ball valves are widely used in oil refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electricity, municipal administration, steel and other industries.

[0004] Ball valves are increasingly used in fluid control. The highest requirement for ball valves is sealing. No matter what environment they are used in, they must be well sealed. However, when encountering high-temperature fluids or gases, the sealing of the ball valve will be damaged due to thermal expansion and contraction, causing fluid or gas leakage. In the prior art, when the ball valve is closed for a long time, the water flow will squeeze the ball valve, and gaps will appear over time. In addition, leakage will occur when it is impacted by high-pressure water flow for a long time. It is necessary to solve the problem of water flow impact and sealing when the ball valve is closed.

[0005] In order to solve the above technical problems, many relevant patents have been proposed in the prior art, such as a Chinese patent with application number CN202222823825.6, authorization announcement number CN218440771U, and name of a leakage-proof and impact-resistant ball valve. The above patent discloses a leakage-proof and impact-resistant ball valve, including: a main valve mechanism, the main valve mechanism is connected to a secondary valve mechanism, and a transmission structure is installed between the main valve mechanism and the secondary valve mechanism; the main valve mechanism is installed with a sealing structure; the main valve mechanism includes a main ball valve; the secondary valve mechanism includes a secondary ball valve; the main ball valve and the secondary ball valve are sealed and connected, and the end of the main ball valve away from the secondary ball valve is sealed and connected to a drain pipe.

[0006] In the above patent, after closing the ball valve, the auxiliary valve mechanism blocks the water source of the water inlet pipe, and the auxiliary valve mechanism is used to prevent impact for the main valve mechanism. A manual air pump is used to increase the air pressure in the middle tube. The increased air pressure enters the middle tube and the air pipe through the one-way valve to prop up the telescopic airbag, so that the telescopic airbag moves along the side tube. At the same time, the telescopic airbag presses against the sealing plug and moves it to the inside of the main valve ball, sealing its water holes to increase the sealing of the ball valve. It is known that in the prior art such as the above patent, the sealing effect of the ball valve is mainly provided by the sealing gasket. However, with the repeated rotation of the control ball in the ball valve, the sealing gasket will be worn. If the sealing gasket is damaged after long-term use and is not replaced in time, the ball valve will leak, etc., which has certain shortcomings. Summary of the invention

[0007] The object of the present invention is to provide a safe and leak-free ball valve to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a safe and leak-free ball valve, comprising a first valve body and a second valve body connected to each other, a ball being arranged between the first valve body and the second valve body; sealing gaskets being arranged between the first valve body, the second valve body and the ball; an adaptive compensation mechanism being arranged between each of the sealing gaskets and the first valve body and the second valve body, and when the sealing gasket is worn, the adaptive compensation mechanism drives the corresponding sealing gasket to contact the ball to improve the sealing performance of the ball valve.

[0009] Furthermore, the adaptive compensation mechanism includes multiple groups of elastic support sheets, multiple groups of positioning grooves are opened on the sealing gasket, and each of the elastic support sheets is installed between the first valve body and the sealing gasket through the positioning groove; the elastic force of the elastic support sheets drives the sealing gasket to abut against the valve body.

[0010] Furthermore, a wear-resistant portion is provided at one end of the sealing gasket away from the elastic support sheet; the wear-resistant portion comprises a friction ring, and the friction ring is installed at the end of the sealing gasket away from the elastic support sheet through the elastic portion.

[0011] Furthermore, the elastic part comprises an elastic annular pad, an end of the sealing pad away from the elastic supporting sheet is provided with an adapting groove, the elastic annular pad is installed in the adapting groove, and the elastic force of the elastic annular pad drives the friction ring to abut against the ball.

[0012] Furthermore, a clamping portion is provided between the friction ring and the sealing gasket; the clamping portion includes a plurality of groups of convex strips fixedly connected to the friction ring, the sealing gasket is provided with a plurality of groups of avoidance grooves matched with the convex strips, and the convex strips are slidably connected to the avoidance grooves.

[0013] Furthermore, a buffer component is arranged between the first valve body and the sealing gasket; the buffer component includes an extrusion pad, the sealing gasket is provided with an installation groove, the extrusion pad is slidably connected in the installation groove, a plurality of connecting plates are fixedly connected to the extrusion pad, and the connecting plates are fixedly connected to the first valve body; an elastic unit is arranged between the connecting plate and the sealing gasket.

[0014] Furthermore, the elastic unit includes a plurality of groups of extrusion springs, the sealing gasket is provided with a plurality of groups of mounting holes, and each of the extrusion springs is respectively mounted in a corresponding mounting hole.

[0015] Furthermore, an extension portion is fixedly connected to the second valve body, a valve stem is rotated on the extension portion, a slot is provided inside the sphere, and a block is fixedly connected to the bottom of the valve stem, the block is adapted to the slot and is used to drive the sphere to rotate.

[0016] Furthermore, a driving part is installed on the valve stem for driving the valve stem to rotate; the driving part includes a handle, the handle is connected to the valve stem, and a protective cover is arranged on the handle.

[0017] Furthermore, a second connecting pipe is installed on the first valve body via a threaded member, and a first connecting pipe is installed on the second valve body via a threaded member.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the safe and leak-free ball valve, through the cooperation between the first valve body, the second valve body, the ball, the sealing gasket and the adaptive compensation mechanism, when the ball valve needs to be opened or closed, the ball will rotate at this moment. When the ball rotates, it will contact with the sealing gasket, thereby rubbing against the sealing gasket. During the friction between the ball and the sealing gasket, the sealing gasket will be worn. For a long time, the sealing effect of the sealing gasket will be greatly reduced, and the sealing gasket can only be replaced. If the sealing gasket is not replaced in time, the ball valve at this moment will leak, which has certain shortcomings. When the sealing gasket is worn, the adaptive compensation mechanism drives the corresponding sealing gasket to contact the ball to improve the sealing performance of the ball valve. Therefore, there is no need to frequently replace the sealing gasket, which can not only save costs, but also facilitate the use of the entire ball valve. It is known that the sealing gasket is installed inside the ball valve. For this reason, when the sealing gasket needs to be replaced, the entire ball valve needs to be opened, and the operation process is actively cumbersome. The setting of the adaptive compensation mechanism in the present application can automatically compensate for the wear of the sealing gasket, so that the sealing gasket always remains in a sealed state. Therefore, the number of times the sealing gasket needs to be replaced can be greatly reduced, the practicality of the ball valve can be improved, and the use effect can be better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the overall structure from another perspective provided by an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the overall explosion state structure provided by an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of a connection state between a first valve body and a second valve body provided in an embodiment of the present invention;

[0024] Figure 5 for Figure 4 State top view structure diagram;

[0025] Figure 6 for Figure 5 Schematic diagram of the AA section structure along the middle edge;

[0026] Figure 7 A schematic diagram of the structure in which the sealing gasket provided in an embodiment of the present invention is installed inside the first valve body;

[0027] Figure 8 A schematic diagram of the structure in which the sealing gasket provided in an embodiment of the present invention is installed inside the second valve body;

[0028] Fig. 9 A schematic diagram of the sealing gasket structure provided by an embodiment of the present invention;

[0029] Fig.10 A schematic structural diagram of a sealing gasket provided by an embodiment of the present invention from another perspective;

[0030] Fig.11 A schematic diagram of a local structure of a sealing gasket provided in an embodiment of the present invention;

[0031] Fig.12 This is a schematic diagram of the structure of the sealing gasket in the explosion state provided by an embodiment of the present invention.

[0032] Explanation of the accompanying drawings: 1. first valve body; 2. second valve body; 3. extension part; 4. valve stem; 5. handle; 6. first connecting tube; 7. second connecting tube; 8. ball; 9. slot; 10. block; 11. sealing gasket; 12. positioning groove; 13. elastic support sheet; 14. friction ring; 15. convex strip; 16. elastic annular gasket; 17. mounting groove; 18. extrusion gasket; 19. extrusion spring; 20. connecting plate; 21. adaptation groove; 22. avoidance groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-12 The present invention provides a technical solution: a safe and leak-free ball valve, comprising a first valve body 1 and a second valve body 2 connected to each other, a ball 8 is arranged between the first valve body 1 and the second valve body 2; sealing gaskets 11 are arranged between the first valve body 1, the second valve body 2 and the ball 8; an adaptive compensation mechanism is arranged between each sealing gasket 11 and the first valve body 1 and the second valve body 2, when the sealing gasket 11 is worn, the adaptive compensation mechanism drives the corresponding sealing gasket 11 to contact the ball 8 to improve the sealing performance of the ball valve.

[0035] Specifically, the safe and leak-free ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to rotate 90 degrees and a very small torque to close tightly. The ball valve is most suitable for use as a switch and cut-off valve, a V-type ball valve. In addition to paying attention to the pipeline parameters, the electric valve should also pay special attention to the environmental conditions of its use. Since the electric device in the electric valve is an electromechanical device, its use state is greatly affected by its use environment. It includes a first valve body 1 and a second valve body 2 connected to each other. Specifically, the first valve body 1 and the second valve body 2 are connected by a threaded part, and a sealing ring is arranged between the first valve body 1 and the second valve body 2 to improve the sealing of the first valve body 1 and the second valve body 2, so that the practicality of the ball valve can be greatly improved, and the use effect is better. A ball 8 is arranged between the first valve body 1 and the second valve body 2, wherein the ball 8 is a prior art, the middle of which is conductive, and the two sides are solid cores. During operation, when the through hole of the ball valve is in a horizontal state with the first valve body 1 and the second valve body 2, the ball valve is in an open state at this moment. Conversely, after the ball 8 rotates 90°, the ball valve can be closed. A sealing gasket 11 is provided between the first valve body 1, the second valve body 2 and the ball 8. By providing the sealing gasket 11, the sealing performance of the ball valve is greatly improved, and the use effect is better. During use, the sealing gasket 11 contacts the ball 8, so as to achieve a sealing effect. And an adaptive compensation mechanism is provided between each sealing gasket 11 and the first valve body 1 and the second valve body 2.

[0036] When the ball valve needs to be opened or closed, the ball 8 will rotate at this moment. When the ball 8 rotates, it will contact with the sealing gasket 11, thereby rubbing against the sealing gasket 11. During the friction between the ball 8 and the sealing gasket 11, the sealing gasket 11 will be worn. For a long time, the sealing effect of the sealing gasket 11 will be greatly reduced, and the sealing gasket 11 can only be replaced. If the sealing gasket 11 is not replaced in time, the ball valve will leak at this moment, which has certain shortcomings. When the sealing gasket 11 is worn, the adaptive compensation mechanism drives the corresponding sealing gasket 11 to contact the ball 8 to improve the sealing performance of the ball valve. Therefore, there is no need to frequently replace the sealing gasket 11, which can not only save costs, but also facilitate the use of the entire ball valve. It is known that the sealing gasket 11 is installed inside the ball valve. For this reason, when the sealing gasket 11 needs to be replaced, the entire ball valve needs to be opened, and the operation process is actively cumbersome. The setting of the adaptive compensation mechanism in the present application can automatically compensate for the wear of the sealing gasket 11, so that the sealing gasket 11 always maintains a sealed state. Therefore, the number of times the sealing gasket 11 needs to be replaced can be greatly reduced, the practicality of the ball valve can be improved, and the use effect can be better.

[0037] In the embodiment provided by the present invention, the adaptive compensation mechanism includes multiple groups of elastic support sheets 13, and multiple groups of positioning grooves 12 are provided on the sealing gasket 11. Each elastic support sheet 13 is installed between the first valve body 1 and the sealing gasket 11 through the positioning grooves 12; the elastic force of the elastic support sheet 13 drives the sealing gasket 11 to abut against the valve body, so when the sealing gasket 11 is worn, the elastic force of the elastic support sheet 13 continues to drive the sealing gasket 11 to abut against the valve body, so that the sealing gasket 11 and the ball 8 always maintain a sealed state to meet the working needs. More specifically, the elastic support sheet 13 is clamped on the sealing gasket 11 through the positioning grooves 12. Therefore, when the ball 8 rotates and rubs against the sealing gasket 11, the sealing gasket 11 is always kept in a stable position under the action of the elastic support sheet 13, so as to avoid the position of the sealing gasket 11 being staggered to affect the sealing effect, and the practicality is better.

[0038] In the embodiment provided by the present invention, a wear-resistant portion is provided at one end of the sealing gasket 11 away from the elastic support sheet 13; the wear-resistant portion includes a friction ring 14, and the friction ring 14 is installed at the end of the sealing gasket 11 away from the elastic support sheet 13 through the elastic portion. By providing the friction ring 14, the service life of the sealing ring can be further improved, thereby improving the practicality of the ball valve.

[0039] In the embodiment provided by the present invention, the elastic portion includes an elastic annular pad 16, and an adaption groove 21 is formed at one end of the sealing pad 11 away from the elastic supporting sheet 13. The elastic annular pad 16 is installed in the adaption groove 21. The elastic force of the elastic annular pad 16 drives the friction ring 14 to abut against the ball 8. Therefore, when the friction ring 14 is damaged, the elastic force of the elastic annular pad 16 will drive the friction ring 14 to abut against the ball 8, thereby improving the sealing performance of the ball valve.

[0040] In the embodiment provided by the present invention, a clamping portion is further provided between the friction ring 14 and the sealing gasket 11; the clamping portion includes a plurality of groups of convex strips 15 fixedly connected to the friction ring 14, and a plurality of groups of avoidance grooves 22 adapted to the convex strips 15 are provided on the sealing gasket 11, and the convex strips 15 are slidably connected to the avoidance grooves 22, which can further improve the stability of the friction pad during installation.

[0041] In the embodiment provided by the present invention, a buffer component is arranged between the first valve body 1 and the sealing gasket 11; the buffer component includes an extrusion pad 18, an installation groove 17 is opened on the sealing gasket 11, the extrusion pad 18 is slidably connected in the installation groove 17, a plurality of groups of connecting plates 20 are fixedly connected to the extrusion pad 18, and the connecting plates 20 are fixedly connected to the first valve body 1; an elastic unit is arranged between the connecting plate 20 and the sealing gasket 11, and by setting the elastic unit, the elastic force of the elastic unit is offset against the elastic force of the elastic support sheet 13, thereby improving the stability of the sealing gasket 11 during installation, and at the same time, the elastic force of the elastic unit is smaller than the elastic force of the elastic support sheet 13.

[0042] In the embodiment provided by the present invention, the elastic unit includes multiple groups of extrusion springs 19, and multiple groups of mounting holes are opened on the sealing gasket 11. Each extrusion spring 19 is respectively installed in a corresponding mounting hole, thereby further improving the practicality of the sealing gasket 11.

[0043] In the embodiment provided by the present invention, the second valve body 2 is fixedly connected with an extension part 3, the extension part 3 is used to rotate the valve stem 4, a slot 9 is provided inside the ball 8, and a block 10 is fixedly connected to the bottom of the valve stem 4, the block 10 is adapted to the slot 9, and is used to drive the ball 8 to rotate, and a driving part is installed on the valve stem 4 to drive the valve stem 4 to rotate; the driving part includes a handle 5, the handle 5 is connected to the valve stem 4, and a protective cover is provided on the handle 5. Therefore, during use, the driving part drives the valve stem 4 to rotate, and the ball 8 is driven to rotate through the cooperation between the valve stem 4 and the ball 8, so as to control the opening and closing of the ball valve, and meet the working needs.

[0044] In the embodiment provided by the present invention, a second connecting pipe 7 is installed on the first valve body 1 through a threaded part, and a first connecting pipe 6 is installed on the second valve body 2 through a threaded part, thereby further facilitating the installation of the ball valve at a predetermined position, thereby improving the practical range of the ball valve and meeting work needs.

[0045] It should be noted that the electrical equipment involved in this application can be powered by batteries or external power supply.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safe and leak-free ball valve, comprising a first valve body (1) and a second valve body (2) connected to each other, wherein a ball (8) is arranged between the first valve body (1) and the second valve body (2), and characterized in that: A sealing gasket (11) is provided between the first valve body (1), the second valve body (2) and the ball (8); An adaptive compensation mechanism is provided between each of the sealing pads (11) and the first valve body (1) and the second valve body (2); When the sealing gasket (11) is worn, the adaptive compensation mechanism drives the corresponding sealing gasket (11) to contact the ball (8) to improve the sealing performance of the ball valve.

2. A safe and leak-free ball valve according to claim 1, characterized in that: The adaptive compensation mechanism comprises a plurality of groups of elastic support sheets (13), the sealing gasket (11) is provided with a plurality of groups of positioning grooves (12), and each of the elastic support sheets (13) is installed between the first valve body (1) and the sealing gasket (11) via the positioning grooves (12); The elastic force of the elastic support sheet (13) drives the sealing gasket (11) to abut against the valve body.

3. A safe and leak-free ball valve according to claim 2, characterized in that: The end of the sealing gasket (11) away from the elastic supporting sheet (13) is provided with a wear-resistant portion; The wear-resistant part comprises a friction ring (14), and the friction ring (14) is installed at one end of the sealing gasket (11) away from the elastic support sheet (13) through an elastic part.

4. A safe and leak-free ball valve according to claim 3, characterized in that: The elastic part comprises an elastic annular pad (16); an adapting groove (21) is provided at one end of the sealing pad (11) away from the elastic supporting sheet (13); the elastic annular pad (16) is installed in the adapting groove (21); and the elastic force of the elastic annular pad (16) drives the friction ring (14) to abut against the ball (8).

5. A safe and leak-free ball valve according to claim 3, characterized in that: A clamping portion is also provided between the friction ring (14) and the sealing gasket (11); The clamping portion comprises a plurality of groups of convex strips (15) fixedly connected to the friction ring (14); the sealing gasket (11) is provided with a plurality of groups of avoidance grooves (22) adapted to the convex strips (15); the convex strips (15) are slidably connected to the avoidance grooves (22).

6. A safe and leak-free ball valve according to claim 4, characterized in that: A buffer component is provided between the first valve body (1) and the sealing gasket (11); The buffer component comprises a compression pad (18), a sealing pad (11) is provided with a mounting groove (17), the compression pad (18) is slidably connected in the mounting groove (17), a plurality of connecting plates (20) are fixedly connected to the compression pad (18), the connecting plates (20) are fixedly connected to the first valve body (1); an elastic unit is provided between the connecting plates (20) and the sealing pad (11).

7. A safe and leak-free ball valve according to claim 6, characterized in that: The elastic unit comprises a plurality of groups of extrusion springs (19), a plurality of groups of mounting holes are provided on the sealing pad (11), and each of the extrusion springs (19) is respectively mounted in a corresponding mounting hole.

8. A safe and leak-free ball valve according to claim 1, characterized in that: An extension portion (3) is fixedly connected to the second valve body (2), a valve stem (4) is rotated on the extension portion (3), a slot (9) is provided inside the ball (8), and a block (10) is fixedly connected to the bottom of the valve stem (4), the block (10) is adapted to the slot (9) and is used to drive the ball (8) to rotate.

9. A safe and leak-free ball valve according to claim 8, characterized in that: The valve stem (4) is provided with a driving part for driving the valve stem (4) to rotate; The driving part comprises a handle (5), the handle (5) is connected to the valve stem (4), and a protective sleeve is arranged on the handle (5).

10. A safe and leak-free ball valve according to claim 1, characterized in that: A second connecting pipe (7) is mounted on the first valve body (1) via a threaded member, and a first connecting pipe (6) is mounted on the second valve body (2) via a threaded member.

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