Wear-resistant self-cleaning non-retention ball valve

Abstract

The utility model discloses a wear-resistant self-cleaning non-retention ball valve, comprising a valve body, an upper valve stem is arranged in the valve body, a ball is fixedly connected to the upper valve stem, a lower valve stem is arranged below the ball, a cleaning plate is installed in the valve body, a sealing block is installed on the inner side of the cleaning plate, a spring seat is arranged on one side of the sealing block, a spring body is installed on the inner side of the spring seat, an upper gasket is arranged on the other end of the spring body, a lower gasket is arranged on one side of the upper gasket, an outer dust ring and an inner dust ring are arranged between the upper gasket and the lower gasket, and the valve body is threadedly connected with a limit plate on one side of the cleaning plate through a first bolt. The utility model has the advantage of cleaning the ball.

Description

Technical Field

[0001] The utility model relates to the field of ball valves, in particular to a wear-resistant self-cleaning non-retention ball valve. Background Art

[0002] The ball valve is a valve that drives the ball through the valve stem and rotates around the ball valve axis. It can also be used for fluid circulation control. The hard-sealed O-type ball valve has a strong shear force between the O-type ball core and the metal valve seat with hard alloy surfacing, which is particularly suitable for media containing fibers, tiny solid particles, etc. With the rapid development of science and technology, the continuous improvement of production technology and product structure, ball valves have rapidly developed into a major valve type. The ordinary hard-sealed ball valves currently on the market have stains on the surface of the ball after long-term use, which are difficult to remove, so there is room for improvement. Utility Model Content

[0003] The utility model aims to provide a wear-resistant self-cleaning non-retention ball valve to solve the problems raised in the above-mentioned background technology, and the utility model has the advantage of cleaning the ball body.

[0004] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a wear-resistant, self-cleaning, non-retention ball valve, comprising a valve body, an upper valve stem is arranged in the valve body, a ball is fixedly connected to the upper valve stem, a lower valve stem is arranged below the ball, a cleaning plate is installed in the valve body, a sealing block is installed on the inner side of the cleaning plate, a spring seat is arranged on one side of the sealing block, a spring body is installed on the inner side of the spring seat, an upper gasket is arranged on the other end of the spring body, a lower gasket is arranged on one side of the upper gasket, an outer dust ring and an inner dust ring are arranged between the upper gasket and the lower gasket, and the valve body is threadedly connected to a limit plate on one side of the cleaning plate through a first bolt.

[0005] By adopting the above technical solution, under the action of the spring body, the spring seat drives the sealing block to move and then drives the cleaning plate to move toward the direction of the sphere, so that the cleaning plate always squeezes one side of the sphere, thereby cleaning one side of the sphere, the outer dust ring and the inner dust ring play a sealing role, and the setting of the limit plate plays a role in limiting the cleaning plate.

[0006] As a further solution of the utility model: a connecting rod is arranged between adjacent first bolts.

[0007] By adopting the above technical solution, the provision of the connecting rod can increase the stability of the first bolt.

[0008] As a further solution of the utility model: the middle part of the upper valve stem is integrally connected with an annular plate, a first gasket is installed above the annular plate, a stuffing disk sleeved on the circumference of the valve stem is provided on the valve body, and a second gasket is provided between the stuffing disk and the valve body.

[0009] By adopting the above technical solution, the arrangement of the first gasket and the second gasket reduces losses.

[0010] Preferably, a packing body is arranged inside the packing disk, the packing body is made of graphite, and the packing disk is connected to the valve body via a second bolt.

[0011] As a further solution of the utility model: a packing gland is arranged above the packing tray, and the packing gland is connected to the packing tray by a third bolt.

[0012] By adopting the above technical solution, the setting of the packing gland is used to compact the packing body.

[0013] As a further solution of the utility model: a handle is arranged above the valve stem, and the handle is fixedly connected to the upper valve stem through a fourth bolt, and the fourth bolt is sleeved with a third gasket.

[0014] By adopting the above technical solution, the handle is connected to the upper valve stem through the fourth bolt, thereby driving the upper valve stem to rotate.

[0015] Preferably, the lower valve stem and the valve body are connected via a fifth bolt, and a fourth gasket is provided between the lower valve stem and the valve body.

[0016] As a further solution of the utility model: a scraper is arranged on the side of the cleaning plate facing the sphere.

[0017] By adopting the above technical solution, the provision of the scraper increases the cleaning effect on the ball.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] Under the action of the spring body, the spring seat drives the sealing block to move and then drives the cleaning plate to move toward the direction of the sphere, so that the cleaning plate always squeezes one side of the sphere, thereby cleaning one side of the sphere, the outer dust ring and the inner dust ring play a sealing role, and the setting of the limit plate plays a limiting role on the cleaning plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 Schematic diagram of the internal structure of the embodiment;

[0022] Figure 3 It is a schematic cross-sectional structure diagram of an embodiment;

[0023] Figure 4 for Figure 3 A front view of

[0024] Figure 5 In the embodiment Figure 4 A magnified view of the structure in the middle.

[0025] In the figure: 1. valve body; 2. upper valve stem; 3. ball; 4. lower valve stem; 5. cleaning plate; 6. sealing block; 7. spring seat; 8. spring body; 9. upper gasket; 10. lower gasket; 11. outer dust ring; 12. inner dust ring; 13. limit plate; 14. connecting rod; 15. annular plate; 16. first gasket; 17. packing disc; 18. second gasket; 19. packing body; 20. packing gland; 21. handle; 22. first bolt; 23. second bolt; 24. third bolt; 25. fourth bolt; 26. third gasket; 27. fifth bolt; 28. scraper; 29. ​​fourth gasket. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the embodiment of the utility model,

[0028] A wear-resistant, self-cleaning, non-retention ball valve, such as Figure 1-Figure 5 As shown, it includes a valve body 1, an upper valve stem 2 is arranged in the valve body 1, the upper valve stem 2 is fixedly connected with a ball 3, a lower valve stem 4 is arranged below the ball 3, a cleaning plate 5 is installed in the valve body 1, a sealing block 6 is installed on the inner side of the cleaning plate 5, a spring seat 7 is arranged on one side of the sealing block 6, a spring body 8 is installed on the inner side of the spring seat 7, an upper gasket 9 is arranged on the other end of the spring body 8, a lower gasket 10 is arranged on one side of the upper gasket 9, an outer dust ring 11 and an inner dust ring 12 are arranged between the upper gasket 9 and the lower gasket 10, and the valve body 1 is threadedly connected with a limit plate 13 on one side of the cleaning plate 5 through a first bolt 22.

[0029] A connecting rod 14 is disposed between adjacent first bolts 22 .

[0030] The middle part of the upper valve stem 2 is integrally connected with an annular plate 15 , a first gasket 16 is installed above the annular plate 15 , a stuffing disk 17 sleeved on the circumference of the upper valve stem 2 is provided on the valve body 1 , and a second gasket 18 is provided between the stuffing disk 17 and the valve body 1 .

[0031] A packing body 19 is disposed inside the packing disc 17 . The packing body 19 is made of graphite. The packing disc 17 is connected to the valve body 1 via a second bolt 23 .

[0032] A packing gland 20 is disposed above the packing tray 17 , and the packing gland 20 is connected to the packing tray 17 via a third bolt 24 .

[0033] A handle 21 is provided above the valve stem. The handle 21 is fixedly connected to the upper valve stem 2 via a fourth bolt 25 . The fourth bolt 25 is sleeved with a third gasket 26 .

[0034] The lower valve stem 4 is connected to the valve body 1 via a fifth bolt 27 , and a fourth gasket 29 is disposed between the lower valve stem 4 and the valve body 1 .

[0035] The cleaning plate 5 is provided with a scraper 28 on the side facing the sphere 3 .

[0036] Working principle:

[0037] Under the action of the spring body 8, the spring seat 7 drives the sealing block 6 to move and then drives the cleaning plate 5 to move toward the direction of the sphere 3, so that the cleaning plate 5 always squeezes one side of the sphere 3, thereby cleaning one side of the sphere 3, the outer dust ring 11 and the inner dust ring 12 play a sealing role, and the setting of the limit plate 13 plays a limiting role on the cleaning plate 5.

[0038] 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. A wear-resistant, self-cleaning, non-retention ball valve, comprising a valve body (1), an upper valve stem (2) being arranged inside the valve body (1), a ball (3) being fixedly connected to the upper valve stem (2), and a lower valve stem (4) being arranged below the ball (3), characterized in that: A cleaning plate (5) is installed in the valve body (1), a sealing block (6) is installed on the inner side of the cleaning plate (5), a spring seat (7) is provided on one side of the sealing block (6), a spring body (8) is installed on the inner side of the spring seat (7), an upper gasket (9) is provided at the other end of the spring body (8), a lower gasket (10) is provided on one side of the upper gasket (9), an outer dust ring (11) and an inner dust ring (12) are provided between the upper gasket (9) and the lower gasket (10), and the valve body (1) is threadedly connected to a limit plate (13) on one side of the cleaning plate (5) through a first bolt (22).

2. The wear-resistant, self-cleaning, non-retention ball valve according to claim 1, characterized in that: A connecting rod (14) is arranged between adjacent first bolts (22).

3. The wear-resistant, self-cleaning, non-retention ball valve according to claim 1, characterized in that: The middle part of the upper valve stem (2) is integrally connected with an annular plate (15), a first gasket (16) is installed above the annular plate (15), the valve body (1) is provided with a stuffing disk (17) sleeved on the circumference of the upper valve stem (2), and a second gasket (18) is provided between the stuffing disk (17) and the valve body (1).

4. The wear-resistant, self-cleaning, non-retention ball valve according to claim 3 is characterized in that: A packing body (19) is arranged inside the packing plate (17), and the packing body (19) is made of graphite. The packing plate (17) is connected to the valve body (1) via a second bolt (23).

5. The wear-resistant, self-cleaning, non-retention ball valve according to claim 4 is characterized in that: A packing gland (20) is arranged above the packing plate (17), and the packing gland (20) is connected to the packing plate (17) via a third bolt (24).

6. The wear-resistant, self-cleaning, non-retention ball valve according to claim 1, characterized in that: A handle (21) is provided above the valve stem, and the handle (21) is fixedly connected to the upper valve stem (2) via a fourth bolt (25), and the fourth bolt (25) is sleeved with a third gasket (26).

7. The wear-resistant, self-cleaning, non-retention ball valve according to claim 1, characterized in that: The lower valve stem (4) and the valve body (1) are connected via a fifth bolt (27), and a fourth gasket is provided between the lower valve stem (4) and the valve body (1).

8. The wear-resistant, self-cleaning, non-retention ball valve according to claim 1, characterized in that: A scraper (28) is provided on the side of the cleaning plate (5) facing the sphere (3).

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