Eccentric semi-ball valve

Abstract

The utility model belongs to the field of eccentric semi-ball valves, particularly relates to an eccentric semi-ball valve, and provides the following scheme aiming at the problems that when an existing eccentric semi-ball valve is used, the situation of poor sealing performance is prone to occurring, the operation of replacing a sealing gasket is tedious, meanwhile, when the valve is closed, a device cannot be braked, and then the situation of mistaken touch is prone to occurring. The valve comprises a lower valve body, the top of the lower valve body is fixedly connected with an upper valve body through a screw, an upper valve rod penetrates through the top of the lower valve body in a rotating mode, the top of the upper valve rod is fixedly connected with a driving shaft, and a vertical rod penetrates through the bottom of the lower valve body in a rotating mode. The sealing performance of the device is improved, an annular baffle can be quickly disassembled, internal parts can be conveniently replaced, a clamping rod can be moved out of a clamping groove, then opening and closing of the valve can be controlled, braking of a vertical rod can be relieved, and the influence of mistaken touch on opening and closing of the valve is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of eccentric hemispherical valves, in particular to an eccentric hemispherical valve. Background Art

[0002] The eccentric semi-ball valve is a relatively new type of ball valve. It has some advantages unique to its structure, such as no friction when opening and closing, the seal is not easy to wear, and the opening and closing torque is small. This can reduce the specifications of the actuator. Equipped with a multi-turn electric actuator, it can achieve the adjustment and strict shutoff of the medium. It is widely used in petroleum, chemical industry, urban water supply and drainage and other working conditions that require strict shutoff.

[0003] The existing eccentric hemispherical valve is prone to poor sealing when in use, and the operation of replacing the sealing gasket is cumbersome. At the same time, when closing the valve, the valve stem cannot be braked, which is prone to accidental touch. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the eccentric hemispheric valve in the prior art, that is, the sealing performance is poor when in use, the operation of replacing the sealing gasket is cumbersome, and the device cannot be braked when closing the valve, which makes it easy to cause accidental touch, and to propose an eccentric hemispheric valve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An eccentric hemispherical valve comprises a lower valve body, the top of the lower valve body is fixedly connected to the upper valve body by screws, the top of the lower valve body is rotatably penetrated by an upper valve stem, the top of the upper valve stem is fixedly connected to a driving shaft, the bottom of the lower valve body is rotatably penetrated by a vertical rod, the top of the vertical rod is fixedly connected to the lower valve stem, a same valve disc is fixedly sleeved between the lower valve stem and the upper valve stem, and the valve disc is eccentrically arranged;

[0007] A sealing assembly, which is arranged at one end of the water outlet of the lower valve body and is used to seal the valve disc;

[0008] The bottom of the lower valve body is fixedly connected with a fixed cylinder, and the bottom of the fixed cylinder is fixedly connected with a bottom plate;

[0009] A brake assembly is arranged on the top of the bottom plate and is used for braking the vertical rod.

[0010] In one possible design, the sealing assembly includes a clearance groove opened on the inner wall of one side of the lower valve body, the inner wall of the clearance groove is slidably connected with an annular sealing block, the outer wall of the valve disc is provided with a sealing gasket, the sealing gasket is used in conjunction with the annular sealing block, the outer wall of the annular sealing block is provided with multiple sealing rings, and the sealing rings are in conflict with the inner wall of one side of the clearance groove.

[0011] In a possible design, one end of the lower valve body is fixedly connected to an annular baffle by screws, and the annular baffle is located on one side of the annular sealing block. Two symmetrically arranged rectangular grooves are opened on one side of the annular sealing block, and the same spring is fixedly connected between the inner wall of one side of the rectangular groove and one side of the annular baffle.

[0012] In a possible design, the brake assembly includes a sliding sleeve plate slidably mounted on the outer wall of a fixed cylinder, both ends of the sliding sleeve plate are rotatably connected to a rotating plate, one end of the rotating plate is rotatably connected to a clamping rod, one end of the clamping rod extends to the interior of the lower valve body, and a clamping groove is opened on the side of the vertical rod, and the clamping groove is engaged with the clamping rod.

[0013] In a possible design, support rods are fixedly connected to both sides of the base plate, the top of the support rods is in conflict with the bottom of the sliding sleeve, and the same tension spring is fixedly connected between the bottom of the sliding sleeve and the top of the base plate, and the tension spring is sleeved on a fixed cylinder.

[0014] In a possible design, the top of the upper valve stem is fixedly connected to a first annular sleeve by screws, an annular groove is provided on the top of the first annular sleeve, a second annular sleeve is embedded in the annular groove, and an inner wall of the second annular sleeve is in conflict with the drive shaft.

[0015] In the present application, when in use, the pneumatic drive component can be connected to the drive shaft, or an external hand wheel can be used for driving. The drive shaft drives the upper valve stem to rotate, and the upper valve stem drives the valve disc to rotate. When the valve disc no longer blocks the water outlet of the lower valve body, the device can be adjusted to an open state, and the second annular sleeve on the upper side can block the annular groove to ensure the sealing performance of the device.

[0016] When closing the valve, the driving shaft rotates in the opposite direction. At this time, the valve disc moves to the water outlet of the lower valve body again to seal the lower valve body, and the valve disc pushes the annular sealing block to move horizontally. The annular sealing block and the sealing gasket are squeezed to improve the sealing performance of the device. The elastic force of the spring can ensure the fit between the annular sealing block and the sealing gasket. When the annular sealing block or the sealing gasket needs to be replaced, the annular baffle can be removed to facilitate the replacement operation.

[0017] When it is necessary to release the brake on the vertical rod, the sliding sleeve can be pushed vertically upwards. The sliding sleeve drives the two rotating plates to rotate, and the rotating plates drive the two clamping rods to move away from each other. At this time, the clamping rod moves out from the inside of the clamping slot, and then the opening and closing of the valve can be controlled. When the valve is closed, the tension spring pulls the sliding sleeve to reset, and the clamping rod is again clamped into the inside of the clamping slot to brake the vertical rod.

[0018] Beneficial effects:

[0019] In the utility model, the eccentric hemispherical valve can improve the sealing performance of the device when the valve is closed through the sealing component, and the annular baffle can be quickly disassembled to facilitate the replacement of internal parts;

[0020] In the utility model, the eccentric hemispherical valve can achieve the effect of braking the vertical rod when the valve is closed through the brake assembly, thereby avoiding the influence of accidental touch on the opening and closing of the valve;

[0021] In the utility model, when the valve is closed, the valve disc will push the annular sealing block to move horizontally, and the annular sealing block will be squeezed with the sealing gasket to improve the sealing performance of the device. The annular baffle can be quickly disassembled to facilitate the replacement of internal parts. The sliding sleeve is pushed vertically upward, and the clamping rod is moved out from the inside of the clamping groove, so that the opening and closing of the valve can be controlled, and the brake on the vertical rod can be released to avoid the influence of accidental touch on the opening and closing of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional structural schematic diagram of an eccentric hemispherical valve proposed by the utility model;

[0023] Figure 2 It is an enlarged view of part A in the utility model;

[0024] Figure 3 It is an enlarged view of part B in the utility model.

[0025] In the figure: 1. lower valve body; 2. lower valve stem; 3. upper valve stem; 4. first annular sleeve; 5. annular groove; 6. second annular sleeve; 7. drive shaft; 8. upper valve body; 9. valve disc; 10. annular sealing block; 11. spring; 12. rectangular groove; 13. sealing ring; 14. sealing gasket; 15. vertical rod; 16. slot; 17. clamping rod; 18. rotating plate; 19. sliding sleeve plate; 20. tension spring; 21. bottom plate; 22. support rod; 23. fixed cylinder; 24. clearance groove; 25. annular baffle. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Example 1

[0028] Reference Figure 1-3 , an eccentric hemispherical valve, which is used in the field of eccentric hemispherical valves, comprises: a lower valve body 1, the top of the lower valve body 1 is fixedly connected with an upper valve body 8 by screws, the top of the lower valve body 1 is rotatably penetrated by an upper valve stem 3, the top of the upper valve stem 3 is fixedly connected with a driving shaft 7, the bottom of the lower valve body 1 is rotatably penetrated by a vertical rod 15, the top of the vertical rod 15 is fixedly connected with a lower valve stem 2, a valve flap 9 is fixedly sleeved between the lower valve stem 2 and the upper valve stem 3, the valve flap 9 is eccentrically arranged, and the rotation of the valve flap 9 can be controlled by the rotation of the driving shaft 7, thereby controlling the opening and closing of the valve;

[0029] The present technical solution also includes a sealing component, which is arranged at one end of the water outlet of the lower valve body 1 and is used to seal the valve disc 9. The sealing component includes a makeshift groove 24 opened on the inner wall of one side of the lower valve body 1, and the inner wall of the makeshift groove 24 is slidably connected with an annular sealing block 10. The outer wall of the valve disc 9 is provided with a sealing gasket 14, and the sealing gasket 14 is used in conjunction with the annular sealing block 10. The outer wall of the annular sealing block 10 is provided with a plurality of sealing rings 13, and the sealing ring 13 conflicts with the inner wall of one side of the makeshift groove 24. One end of the lower valve body 1 is fixedly connected with an annular baffle 25 by screws, and the annular baffle 25 is located on one side of the annular sealing block 10. One side of the annular sealing block 10 is provided with a sealing gasket 14. Two rectangular grooves 12 are provided, and a same spring 11 is fixedly connected between the inner wall of one side of the rectangular groove 12 and one side of the annular baffle 25. When the valve is closed, the driving shaft 7 rotates in the opposite direction. At this time, the valve flap 9 moves to the water outlet of the lower valve body 1 again to block the lower valve body 1, and the valve flap 9 will push the annular sealing block 10 to move horizontally. The annular sealing block 10 will be squeezed with the sealing gasket 14 to improve the sealing performance of the device. The elastic force of the spring 11 can ensure that the annular sealing block 10 fits the sealing gasket 14. When the annular sealing block 10 or the sealing gasket 14 needs to be replaced, the annular baffle 25 can be removed to facilitate the replacement operation.

[0030] The bottom of the lower valve body 1 is fixedly connected with a fixed cylinder 23, and the bottom of the fixed cylinder 23 is fixedly connected with a bottom plate 21;

[0031] The present technical solution also includes a brake assembly, which is arranged on the top of the bottom plate 21 and is used to brake the vertical rod 15. The brake assembly includes a sliding sleeve 19 slidably sleeved on the outer wall of the fixed cylinder 23, and both ends of the sliding sleeve 19 are rotatably connected with a rotating plate 18, and one end of the rotating plate 18 is rotatably connected with a clamping rod 17, and one end of the clamping rod 17 extends to the interior of the lower valve body 1. A clamping groove 16 is opened on the side of the vertical rod 15, and the clamping groove 16 is engaged with the clamping rod 17. Support rods 22 are fixedly connected on both sides of the bottom plate 21, and the top of the support rod 22 conflicts with the bottom of the sliding sleeve 19. A tension spring 20 is fixedly connected between the bottom of the movable sleeve 19 and the top of the bottom plate 21. The tension spring 20 is sleeved on the fixed cylinder 23. When it is necessary to release the brake on the vertical rod 15, the sliding sleeve 19 can be pushed vertically upward. The sliding sleeve 19 drives the two rotating plates 18 to rotate, and the rotating plates 18 drive the two clamping rods 17 to move away from each other. At this time, the clamping rod 17 moves out from the inside of the clamping groove 16, and then the opening and closing of the valve can be controlled. When the valve is closed, the tension spring 20 pulls the sliding sleeve 19 to reset, and the clamping rod 17 is again clamped into the inside of the clamping groove 16 to brake the vertical rod 15.

[0032] Example 2

[0033] refer to Figure 1-3 , an improvement on the basis of Example 1: the top of the upper valve stem 3 is fixedly connected with a first annular sleeve 4 by screws, the top of the first annular sleeve 4 is provided with an annular groove 5, and a second annular sleeve 6 is embedded in the annular groove 5. The inner wall of the second annular sleeve 6 is in conflict with the drive shaft 7, and can be connected to the drive shaft 7 through a pneumatic drive component, or can be driven by an external hand wheel. The drive shaft 7 drives the upper valve stem 3 to rotate, and the upper valve stem 3 drives the valve disc 9 to rotate. When the valve disc 9 no longer blocks the water outlet of the lower valve body 1, the device can be adjusted to an open state, and the upper second annular sleeve 6 can block the annular groove 5 to ensure the sealing performance of the device.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An eccentric hemispherical valve, characterized in that: include: A lower valve body (1), the top of the lower valve body (1) is fixedly connected to the upper valve body (8) by screws, the top of the lower valve body (1) is rotatably penetrated by an upper valve stem (3), the top of the upper valve stem (3) is fixedly connected to a drive shaft (7), the bottom of the lower valve body (1) is rotatably penetrated by a vertical rod (15), the top of the vertical rod (15) is fixedly connected to the lower valve stem (2), a same valve flap (9) is fixedly sleeved between the lower valve stem (2) and the upper valve stem (3), and the valve flap (9) is eccentrically arranged; A sealing component, which is arranged at one end of the water outlet of the lower valve body (1) and is used to seal the valve flap (9); The bottom of the lower valve body (1) is fixedly connected to a fixed cylinder (23), and the bottom of the fixed cylinder (23) is fixedly connected to a bottom plate (21); A brake assembly is arranged on the top of the bottom plate (21) and is used to brake the vertical rod (15).

2. An eccentric hemispherical valve according to claim 1, characterized in that: The sealing assembly comprises a clearance groove (24) provided on the inner wall of one side of the lower valve body (1); the inner wall of the clearance groove (24) is slidably connected with an annular sealing block (10); the outer wall of the valve flap (9) is provided with a sealing gasket (14); the sealing gasket (14) is used in conjunction with the annular sealing block (10); the outer wall of the annular sealing block (10) is provided with a plurality of sealing rings (13); the sealing rings (13) are in conflict with the inner wall of one side of the clearance groove (24).

3. The eccentric hemispherical valve according to claim 1, characterized in that: One end of the lower valve body (1) is fixedly connected to an annular baffle (25) by means of screws. The annular baffle (25) is located on one side of the annular sealing block (10). One side of the annular sealing block (10) is provided with two symmetrically arranged rectangular grooves (12). A same spring (11) is fixedly connected between an inner wall of one side of the rectangular groove (12) and one side of the annular baffle (25).

4. The eccentric hemispherical valve according to claim 1, characterized in that: The brake assembly comprises a sliding sleeve (19) slidably mounted on the outer wall of a fixed cylinder (23), both ends of the sliding sleeve (19) are rotatably connected to a rotating plate (18), one end of the rotating plate (18) is rotatably connected to a clamping rod (17), one end of the clamping rod (17) extends to the interior of the lower valve body (1), and a clamping groove (16) is provided on the side of the vertical rod (15), and the clamping groove (16) is engaged with the clamping rod (17).

5. The eccentric hemispherical valve according to claim 1, characterized in that: Support rods (22) are fixedly connected to both sides of the base plate (21), the top of the support rods (22) abuts against the bottom of the sliding sleeve (19), and a tension spring (20) is fixedly connected between the bottom of the sliding sleeve (19) and the top of the base plate (21), and the tension spring (20) is sleeved on a fixed cylinder (23).

6. The eccentric hemispherical valve according to claim 1, characterized in that: The top of the upper valve stem (3) is fixedly connected to a first annular sleeve (4) by means of screws, an annular groove (5) is provided on the top of the first annular sleeve (4), a second annular sleeve (6) is embedded in the annular groove (5), and the inner wall of the second annular sleeve (6) is in contact with the drive shaft (7).

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