Adjustable leakage-proof ball valve

Abstract

The utility model relates to the technical field of valves, and provides an adjustable leakage-proof ball valve which is not easy to leak and convenient to maintain, a valve body comprises a valve seat and an opening and closing piece, a water passing channel is arranged in an inner cavity of the valve seat, the opening and closing piece is attached to the inner wall of the water passing channel and is in sliding connection with the inner wall of the water passing channel, and a twisting rod penetrating through the valve seat is arranged at the top of the opening and closing piece. The outer wall of the sealing ball is attached to the inner wall of the water passing channel, the sealing ball is in sliding connection with the inner wall of the water passing channel, the outward pushing air bag is fixedly arranged in the sealing ball, a first elastic block is arranged in the middle section of the bottom of the sealing ball, and an outward pushing rod is arranged between the outer wall of the outward pushing air bag and the inner wall of the sealing ball; an adjusting rod attached to the outer wall of the outwards-pushing air bag is further arranged in the twisting rod in a penetrating and sliding mode, and the adjusting rod is pressed downwards to enable the outwards-pushing air bag to deform towards the two sides to push the adjusting rod to enable the sealing ball to expand outwards and deform.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an adjustable leak-proof ball valve. Background Art

[0002] Valves are pipe accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc., and can also be divided into ball valves, butterfly valves, gate valves, etc. according to the type of their opening parts. Ball valves are a type of valve, and their opening and closing parts are spherical, and there is a penetrating water passage in the opening and closing parts that can pass water. The valve can be opened or closed by rotating the opening and closing parts. Compared with traditional gate valves that require twisting the threaded rod to raise and lower the gate plate, the speed of opening and closing is faster, and opening and closing is more labor-saving.

[0003] Although the above-mentioned prior art can solve the corresponding technical problems, there are still certain defects: during the use of the existing ball valve, the opening and closing parts will generate repeated friction with the valve body when opening and closing the valve. After a period of use, the friction will cause a wear gap between the valve body and the opening and closing parts, which will affect the sealing effect of the ball valve, easily causing leakage, and it is impossible to adjust. The worn opening and closing parts need to be disassembled and replaced, which makes maintenance inconvenient. Utility Model Content

[0004] The utility model aims to provide an adjustable anti-leakage ball valve which is not easy to leak and easy to maintain in view of the defects and shortcomings of the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an adjustable leak-proof ball valve, including a valve body, the valve body including a valve seat with an inner cavity provided with a water passage and an opening and closing member that is fitted with and slidably connected to the inner wall of the water passage, a torsion rod that penetrates the valve seat is provided on the top of the opening and closing member, the opening and closing member includes a closing ball with an outer wall that is fitted with and slidably connected to the inner wall of the water passage and an outward-thrusting airbag fixedly arranged in the closing ball, a first elastic block is provided in the middle section of the bottom of the closing ball, an outward-thrusting rod is provided between the outer wall of the outward-thrusting airbag and the inner wall of the closing ball, an adjustment rod that is fitted with the outer wall of the outward-thrusting airbag and is slidably provided in the torsion rod, the adjusting rod is pressed down to deform the outward-thrusting airbag to both sides, and the adjusting rod is pushed to deform the closing ball outward.

[0006] A further improvement is that: the outer wall of the bottom of the adjusting rod is provided with a thread, and a threaded block meshingly connected with the outer wall of the bottom of the adjusting rod is fixedly provided in the closing ball.

[0007] A further improvement is that: a guide ring is further arranged inside the closing ball, and the outer wall of the middle section of the outer push rod penetrates and is slidably arranged on the guide ring.

[0008] A further improvement is that a second elastic block is also provided at the top of the closing ball located on one side of the torsion rod.

[0009] A further improvement is that the outward push rod includes a thrust rod fixedly connected to the outer wall of the outward push airbag and an outward push spring with one end arranged at the end of the thrust rod, the other end of the outward push spring is provided with an outward push groove block fixedly connected to the inner wall of the closing ball, and the inner wall of the outward push groove block is slidably connected to the outer wall of the end of the thrust rod.

[0010] A further improvement is that a twisting handle is detachably provided on the outer wall at the top end of the twisting rod.

[0011] A further improvement is that a flange is provided at the end of the valve body.

[0012] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: after the utility model has been used for a period of time, if the closing ball is worn, the adjusting rod can be pressed down, and the outward pushing airbag can be squeezed by the adjusting rod, so that the closing ball expands outward under the action of the first elastic block and the second elastic block, and then re-fits the inner wall of the closed water passage. Adjustment and maintenance are convenient, and the probability of water leakage caused by valve wear after long-term use can be effectively reduced through convenient adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the ball valve of the utility model;

[0015] Figure 2 It is a structural schematic diagram of a front view cross section of a valve body of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the front cross section of the opening and closing member of the utility model;

[0017] Figure 4 It is a structural schematic diagram of a front view cross section of an outer push rod of the utility model. DETAILED DESCRIPTION

[0018] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0019] See also Figure 1-4As shown, the technical solution adopted in this specific embodiment is: an adjustable anti-leakage ball valve, including a valve body 1, the valve body 1 includes a valve seat 12 with a water passage 11 in the inner cavity and an opening and closing member 13 that fits and is slidably connected to the inner wall of the water passage 11, the top of the opening and closing member 13 is provided with a torsion rod 14 that penetrates the valve seat 12, the opening and closing member 13 includes a closing ball 21 with an outer wall that fits and is slidably connected to the inner wall of the water passage 11 and an outward push airbag 22 fixedly arranged in the closing ball 21, and a first elastic block 2 is provided in the middle section of the bottom of the closing ball 21 6. An outer push rod 23 is provided between the outer wall of the outer push airbag 22 and the inner wall of the closed ball 21. The outer push rod 23 includes a push rod 31 fixedly connected to the outer wall of the outer push airbag 22 and an outer push spring 32 at one end of the push rod 31. The other end of the outer push spring 32 is provided with an outer push groove block 33 fixedly connected to the inner wall of the closed ball 21. The inner wall of the outer push groove block 33 is slidably connected to the outer wall of the end of the push rod 31. The torsion rod 14 is also penetrated and slidably provided with an adjustment rod 15 that fits the outer wall of the outer push airbag 22. The adjustment rod 15 is pressed down. The outward pushing airbag 22 is deformed to both sides to push the adjusting rod 15 to make the closing ball 21 expand and deform outward. When in use, the valve body 1 of the valve is connected to the external pipeline so that the water flow of the external pipeline can enter the water passage 11 of the valve seat 12. The opening and closing member 13 is rotated by twisting the twisting rod 14. When the through hole of the closing ball 21 of the opening and closing member 13 faces the water passage 11, the valve is connected. Otherwise, the valve is closed by the closing ball 21. After long-term use, a gap is generated between the water passage 11 and the inner wall of the closing ball 21 due to wear. At this time, the adjustment rod 15 is pressed down, so that the adjustment rod 15 moves downward to squeeze the outward pushing airbag 22, thereby deforming the outward pushing airbag 22, and then squeezing the outward pushing rod 23, so that the thrust rod 31 of the outward pushing rod 23 generates a lateral thrust, and the thrust rod 31 is made straight through the outward pushing groove block 32 while transmitting the thrust, so that the closing ball 21 is pushed to both sides, and the first elastic block 26 is stretched and deformed by the thrust, so that the closing ball 21 expands outward and fits against the inner wall of the water passage 11 again, thereby maintaining the sealing effect and preventing water leakage, and at the same time, it is convenient for maintenance and adjustment;

[0020] The outer wall at the bottom of the adjusting rod 15 is provided with a thread, and a thread block 25 is fixedly provided inside the closing ball 21 and is meshed with the outer wall at the bottom of the adjusting rod 15, so that the adjusting rod 15 can be more accurately lowered by rotating the matching thread and the thread block 25, so that the pressing accuracy of the adjusting rod 15 is higher, thereby preventing the closing ball 21 from expanding too much and being unable to twist due to excessive lateral thrust;

[0021] A guide ring 24 is also provided inside the closing ball 21, and the outer wall of the middle section of the outer push rod 23 penetrates and is slidably arranged on the guide ring 24, which is conducive to making the moving trajectory of the outer push rod 23 more controllable and preventing the outer thrust force from being dispersed and affecting the effect of pushing the closing ball 21 to expand outward;

[0022] A second elastic block 27 is also provided at the top of the closing ball 21 on one side of the torsion rod 14, which is conducive to reducing the expansion force required for the closing ball 21 to expand outward and improving the fit between the closing ball 21 and the inner wall of the water passage 11 after expansion;

[0023] The outer wall of the top end of the twisting rod 14 can also be detachably provided with a twisting handle 2, which is conducive to making the twisting of the twisting rod 14 more convenient and labor-saving;

[0024] The end of the valve body 1 is provided with a flange 3, which is conducive to making the valve body 1 easier and more convenient to connect to the external pipeline.

[0025] Working principle of the utility model: When the utility model is used, the valve body 1 of the valve is connected to the external pipeline, so that the water flow of the external pipeline can enter the water passage 11 of the valve seat 12, and the opening and closing member 13 is rotated by twisting the torsion rod 14. When the through hole of the closing ball 21 of the opening and closing member 13 faces the water passage 11, the valve is connected, and vice versa, the valve is closed by the closing ball 21. After long-term use, a gap is generated between the water passage 11 and the inner wall of the closing ball 21 due to wear. At this time, the downward pressure is adjusted Rod 15, the adjustment rod 15 moves downward to squeeze the outward pushing airbag 22, thereby causing the outward pushing airbag 22 to deform, and then squeeze the outward pushing rod 23, so that the thrust rod 31 of the outward pushing rod 23 generates a lateral thrust, and the thrust rod 31 is made straight and the thrust is transmitted at the same time through the outward pushing groove block 32, so that the closing ball 21 is pushed to both sides, and the first elastic block 26 is stretched and deformed by the thrust, so that the closing ball 21 expands outward and fits against the inner wall of the water passage 11 again, thereby maintaining the sealing effect and preventing water leakage, while facilitating maintenance and adjustment.

[0026] The utility model is intended to protect the structure of the product. The model of each component is not the content of the utility model, and it is also a known technology. Any component on the market that can achieve the above functions of the utility model can be used as a choice. Therefore, the model and other parameters of the component are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of various components.

[0027] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. An adjustable leak-proof ball valve, comprising a valve body (1), the valve body (1) comprising a valve seat (12) having an inner cavity provided with a water passage (11) and an opening and closing member (13) fitted with and slidably connected to the inner wall of the water passage (11), the opening and closing member (13) having a torsion rod (14) penetrating the valve seat (12) at the top, characterized in that: The opening and closing member (13) comprises a closing ball (21) whose outer wall is fitted and slidably connected to the inner wall of the water passage (11) and an outward-pushing airbag (22) fixedly arranged in the closing ball (21); a first elastic block (26) is provided in the middle section of the bottom of the closing ball (21); an outward-pushing rod (23) is provided between the outer wall of the outward-pushing airbag (22) and the inner wall of the closing ball (21); an adjusting rod (15) is also penetrated and slidably provided in the twisting rod (14) and fitted with the outer wall of the outward-pushing airbag (22); the adjusting rod (15) is pressed downward to deform the outward-pushing airbag (22) to both sides, and the adjusting rod (15) is pushed to deform the closing ball (21) to expand outward.

2. The adjustable anti-leakage ball valve according to claim 1, characterized in that: The outer wall of the bottom of the adjusting rod (15) is provided with a thread, and a threaded block (25) meshingly connected with the outer wall of the bottom of the adjusting rod (15) is fixedly provided inside the closing ball (21).

3. The adjustable anti-leakage ball valve according to claim 1, characterized in that: A guide ring (24) is also provided inside the closing ball (21), and the outer wall of the middle section of the outer push rod (23) penetrates and is slidably disposed on the guide ring (24).

4. The adjustable anti-leakage ball valve according to claim 1, characterized in that: A second elastic block (27) is also provided on the top of the closing ball (21) and located on one side of the torsion rod (14).

5. The adjustable anti-leakage ball valve according to claim 1, characterized in that: The outward push rod (23) comprises a push rod (31) fixedly connected to the outer wall of the outward push airbag (22) and an outward push spring (32) with one end arranged at the end of the push rod (31); the other end of the outward push spring (32) is provided with an outward push groove block (33) fixedly connected to the inner wall of the closing ball (21); the inner wall of the outward push groove block (33) is slidably connected to the outer wall of the end of the push rod (31).

6. The adjustable anti-leakage ball valve according to claim 1, characterized in that: The outer wall at the top end of the twisting rod (14) is also provided with a detachable twisting handle (2).

7. The adjustable anti-leakage ball valve according to claim 1, characterized in that: The end of the valve body (1) is provided with a flange (3).

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