PDS ultrahigh frequency fixed ball valve

Abstract

The utility model discloses a PDS ultrahigh-frequency fixed ball valve, relates to the technical field of fixed ball valves, and aims to solve the problems that an existing conventional hard sealing valve cannot be used in a high-frequency working condition, so that the use is inconvenient, and the service life is short. An outflow body is arranged at one end of the valve body, an inflow body is arranged at the other end of the valve body, a ball valve is arranged in the valve body, sealing rings are arranged at the two ends of the ball valve, a valve rod is arranged at the upper end of the ball valve, and a fixing shaft is arranged at the lower end of the ball valve. The extrusion seat is arranged on one side of the sealing ring, an elastic piece is arranged on one side of the extrusion seat, moving grooves are formed in the inner wall of the outflow body and the inner wall of the inflow body, and the sealing ring, the extrusion seat and the elastic piece are all clamped into the moving grooves; the wear-resistant hardened coating is arranged at the joint of the outer wall of the ball valve and the outer wall of the sealing ring, a sealing gasket is arranged between the exterior of the sealing ring and the extrusion seat, and the outer wall of the sealing gasket is tightly connected with the sealing ring and the moving groove.

Description

Technical Field

[0001] The utility model relates to the technical field of fixed ball valves, in particular to a PDS ultra-high frequency fixed ball valve. Background Art

[0002] The trunnion-mounted ball valve is a new generation of high-performance ball valve, suitable for long-distance pipelines and general industrial pipelines. Its strength, safety, and resistance to harsh environments are specially considered during design, and it is suitable for various corrosive and non-corrosive media.

[0003] For example, the Chinese authorized patent (fixed ball valve) with announcement number CN203146892U: includes a valve body, a valve seat, a valve stem, a ball and a handle, the ball is arranged in the valve body, a valve seat is arranged between the ball and the valve body, a valve stem for rotating the ball is connected to the upper end of the ball, a handle is arranged at the other end of the valve stem, a sealing ring is arranged between the valve stem and the valve body, a groove is arranged on the ball, the opening direction of the groove is perpendicular to the direction of the channel in the ball, an arc surface which is concentric with the ball and has a smaller diameter than the ball is arranged on the sealing surface of the ball, and planes perpendicular to the channel are arranged at both ends of the arc surface. Through the above technical scheme, the fixed ball valve can realize a fixed ball valve which does not affect the use of the ball while reducing the production cost and the weight of the ball.

[0004] However, existing conventional hard-sealed valves cannot be used in high-frequency working conditions, resulting in inconvenience in use and short service life; therefore, they do not meet existing needs. For this reason, we proposed the PDS ultra-high frequency fixed ball valve. Utility Model Content

[0005] The utility model aims to provide a PDS ultra-high frequency fixed ball valve to solve the problem that the existing conventional hard-sealed valves mentioned in the above background technology cannot be used in high-frequency working conditions, resulting in inconvenience in use and short service life.

[0006] To achieve the above object, the utility model provides the following technical solution: a PDS ultra-high frequency fixed ball valve, comprising: a valve body, one end of the valve body is provided with an outflow body, the other end of the valve body is provided with an inflow body, a ball valve is provided inside the valve body, both ends of the ball valve are provided with sealing rings, the upper end of the ball valve is provided with a valve stem, and the lower end of the ball valve is provided with a fixed shaft;

[0007] Also includes:

[0008] An extrusion seat is arranged on one side of the sealing ring, an elastic sheet is arranged on one side of the extrusion seat, a movable groove is arranged on the inner wall of the outflow body and the inflow body, and the sealing ring, the extrusion seat and the elastic sheet are all inserted into the movable groove;

[0009] The wear-resistant hardened coating is arranged at the connection between the outer wall of the ball valve and the outer wall of the sealing ring.

[0010] Preferably, a sealing gasket is provided between the outside of the sealing ring and the extrusion seat, and the outer wall of the sealing gasket is tightly connected to the sealing ring and the movable groove.

[0011] Preferably, a first sealing seat is provided at the upper end of the valve body, a second sealing seat is provided at the upper end of the first sealing seat, a cover plate is provided at the upper end of the second sealing seat, and the upper end of the valve stem passes through the first sealing seat, the second sealing seat and the cover plate.

[0012] Preferably, the inner walls of the first sealing seat and the second sealing seat are both provided with multi-stage sealing rings, and the first sealing seat and the second sealing seat are tightly connected to the valve stem via the multi-stage sealing rings.

[0013] Preferably, a wear-resistant gasket is provided at the connection between the valve body and the first sealing seat, and the first sealing seat, the second sealing seat and the cover plate are threadedly connected via threaded fasteners.

[0014] Preferably, a connecting flange is provided at one end of the outflow body, a fixing flange is provided at the other end of the outflow body, a flange bolt is provided on one side of the fixing flange, and the fixing flange is threadedly connected to the valve body through the flange bolt.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model provides a wear-resistant hardened coating at the connection between the outer wall of the ball valve and the outer wall of the sealing ring, and multi-stage sealing rings are provided on the inner walls of the first sealing seat and the second sealing seat. When the ball valve is rotated, the connection between the outer wall of the ball valve and the outer wall of the sealing ring is rubbed by the wear-resistant hardened coating, so as to improve the wear resistance, avoid friction damage to the surface, and improve the service life. When rotating, the sealing ring is pushed to move slightly along the moving groove, and the extrusion seat is extruded and limited by the elastic sheet, and the outer wall of the sealing gasket is tightly connected with the sealing ring and the moving groove, so as to improve the sealing performance. The elastic sheet is used to replace the spring structure, which is not easy to break and be damaged, and is not easy to bounce back and forth, so as to improve the extrusion stability and service life. The valve stem is sealed by the first sealing seat and the second sealing seat, and the first sealing seat and the second sealing seat are tightly connected with the valve stem by the multi-stage sealing ring, so as to improve the sealing performance and avoid water leakage. When used with the wear-resistant hardened coating and the elastic sheet, it is suitable for high-frequency working conditions, and improves convenience and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall internal cross-sectional structure of the utility model;

[0019] Figure 3 It is a partial enlarged view of point A of the utility model;

[0020] Figure 4 It is a partial enlarged view of the B part of the utility model;

[0021] In the figure: 1. valve body; 2. outflow body; 3. fixing flange; 4. flange bolts; 5. connecting flange; 6. first sealing seat; 7. second sealing seat; 8. cover plate; 9. inflow body; 10. valve stem; 11. threaded fastener; 12. ball valve; 13. sealing ring; 14. extrusion seat; 15. sealing gasket; 16. elastic sheet; 17. wear-resistant hardened coating; 18. wear-resistant gasket; 19. multi-stage sealing ring; 20. fixed shaft; 21. movable groove. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-4 The utility model provides an embodiment: a PDS ultra-high frequency fixed ball valve, comprising: a valve body 1, an outflow body 2 is arranged at one end of the valve body 1, an inflow body 9 is arranged at the other end of the valve body 1, a ball valve 12 is arranged inside the valve body 1, sealing rings 13 are arranged at both ends of the ball valve 12, a valve stem 10 is arranged at the upper end of the ball valve 12, and a fixed shaft 20 is arranged at the lower end of the ball valve 12;

[0024] Also includes:

[0025] An extrusion seat 14 is arranged on one side of the sealing ring 13, an elastic sheet 16 is arranged on one side of the extrusion seat 14, a moving groove 21 is arranged on the inner wall of the outflow body 2 and the inflow body 9, and the sealing ring 13, the extrusion seat 14 and the elastic sheet 16 are all inserted into the moving groove 21;

[0026] The wear-resistant hardened coating 17 is provided at the connection between the outer wall of the ball valve 12 and the outer wall of the sealing ring 13 .

[0027] The connection between the outer wall of the ball valve 12 and the outer wall of the sealing ring 13 relies on the friction of the wear-resistant hardened coating 17 to improve the wear resistance, avoid friction damage to the surface, and increase the service life. The valve stem 10 relies on the first sealing seat 6 and the second sealing seat 7 for sealing, and the first sealing seat 6 and the second sealing seat 7 are internally tightly connected with the valve stem 10 by a multi-stage sealing ring 19 to improve the sealing performance and avoid water leakage. It is used together with the wear-resistant hardened coating 17 and the elastic sheet 16, is suitable for high-frequency working conditions, and improves convenience and service life.

[0028] See also Figure 2 , 3A sealing gasket 15 is arranged between the outside of the sealing ring 13 and the extrusion seat 14, and the outer wall of the sealing gasket 15 is tightly connected with the sealing ring 13 and the moving groove 21 to improve the sealing performance.

[0029] See also Figure 1 , 2 A first sealing seat 6 is arranged at the upper end of the valve body 1, a second sealing seat 7 is arranged at the upper end of the first sealing seat 6, a cover plate 8 is arranged at the upper end of the second sealing seat 7, and the upper end of the valve stem 10 penetrates the first sealing seat 6, the second sealing seat 7 and the cover plate 8, and the valve body 1 is subjected to multi-level waterproof treatment by relying on the first sealing seat 6 and the second sealing seat 7.

[0030] See also Figure 2 , 4 The inner walls of the first sealing seat 6 and the second sealing seat 7 are both provided with a multi-stage sealing ring 19, and the first sealing seat 6 and the second sealing seat 7 are tightly connected to the valve stem 10 through the multi-stage sealing ring 19. The first sealing seat 6 and the second sealing seat 7 are tightly connected to the valve stem 10 inside by the multi-stage sealing ring 19, thereby improving the sealing performance and avoiding water leakage.

[0031] See also Figure 2 , 4 A wear-resistant gasket 18 is provided at the connection between the valve body 1 and the first sealing seat 6, and the first sealing seat 6, the second sealing seat 7 and the cover plate 8 are threadedly connected by threaded fasteners 11 to improve the wear resistance between the valve body 1 and the first sealing seat 6.

[0032] See also Figure 1 A connecting flange 5 is provided at one end of the outflow body 2, and a fixing flange 3 is provided at the other end of the outflow body 2. A flange bolt 4 is provided on one side of the fixing flange 3, and the fixing flange 3 is threadedly connected to the valve body 1 through the flange bolt 4. The outflow body 2 and the valve body 1 are fixed through the fixing flange 3, which is convenient for disassembly and replacement. The liquid enters from the inflow body 9 and flows out from the outflow body 2.

[0033] Working principle: When in use, the outflow body 2 is fixed to the valve body 1 by means of the external flange bolts 4 of the fixing flange 3, and the valve stem 10 is connected to the handwheel externally, and the valve stem 10 is driven to rotate by the handwheel, thereby driving the ball valve 12 to rotate. The inside of the ball valve 12 is hollow, and both sides are open. The open side is rotated to a state of interconnection with the internal channels of the outflow body 2 and the inflow body 9. At this time, the liquid enters the valve body 1 from the inflow body 9, and is discharged from the outflow body 2 through the ball valve 12. When it is necessary to prevent the liquid from flowing out, the valve stem 10 is rotated to rotate the ball valve 12, and the sealing end is rotated to the connecting point of the internal channels of the outflow body 2 and the inflow body 9, thereby achieving a sealing effect. When rotating, the connection between the outer wall of the ball valve 12 and the outer wall of the sealing ring 13 relies on the friction of the wear-resistant hardened coating 17 to improve the wear resistance. , avoiding friction damage to the surface and improving service life. When rotating, the sealing ring 13 is pushed to move slightly along the moving groove 21, and the elastic sheet 16 is used to extrude and limit the extrusion seat 14, and the outer wall of the sealing gasket 15 is tightly connected with the sealing ring 13 and the moving groove 21 to improve the sealing performance. The elastic sheet 16 is used to replace the spring structure, which is not easy to break and damage, and is not easy to bounce back and forth, thereby improving the extrusion stability and service life. The valve stem 10 relies on the first sealing seat 6 and the second sealing seat 7 for sealing, and the first sealing seat 6 and the second sealing seat 7 rely on the multi-stage sealing ring 19 to be tightly connected with the valve stem 10 to improve the sealing performance and avoid water leakage. It is used with the wear-resistant hardened coating 17 and the elastic sheet 16, which is suitable for high-frequency working conditions and improves convenience and service life.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A PDS ultra-high frequency fixed ball valve, comprising a valve body (1), one end of the valve body (1) being provided with an outflow body (2), the other end of the valve body (1) being provided with an inflow body (9), a ball valve (12) being provided inside the valve body (1), both ends of the ball valve (12) being provided with sealing rings (13), the upper end of the ball valve (12) being provided with a valve stem (10), and the lower end of the ball valve (12) being provided with a fixed shaft (20); Features: Also includes: An extrusion seat (14) is arranged on one side of the sealing ring (13), an elastic sheet (16) is arranged on one side of the extrusion seat (14), inner walls of the outflow body (2) and the inflow body (9) are both provided with a movable groove (21), and the sealing ring (13), the extrusion seat (14) and the elastic sheet (16) are all inserted into the movable groove (21); A wear-resistant hardened coating (17) is provided at the connection between the outer wall of the ball valve (12) and the outer wall of the sealing ring (13).

2. The PDS ultra-high frequency fixed ball valve according to claim 1 is characterized in that: A sealing gasket (15) is provided between the outside of the sealing ring (13) and the extrusion seat (14), and the outer wall of the sealing gasket (15) is tightly connected to the sealing ring (13) and the movable groove (21).

3. The PDS ultra-high frequency fixed ball valve according to claim 1 is characterized in that: A first sealing seat (6) is provided at the upper end of the valve body (1), a second sealing seat (7) is provided at the upper end of the first sealing seat (6), a cover plate (8) is provided at the upper end of the second sealing seat (7), and the upper end of the valve stem (10) passes through the first sealing seat (6), the second sealing seat (7) and the cover plate (8).

4. The PDS ultra-high frequency fixed ball valve according to claim 3 is characterized in that: The inner walls of the first sealing seat (6) and the second sealing seat (7) are both provided with multi-stage sealing rings (19), and the first sealing seat (6) and the second sealing seat (7) are tightly connected to the valve stem (10) via the multi-stage sealing rings (19).

5. The PDS ultra-high frequency fixed ball valve according to claim 3 is characterized in that: A wear-resistant gasket (18) is provided at the connection between the valve body (1) and the first sealing seat (6), and the first sealing seat (6), the second sealing seat (7) and the cover plate (8) are threadedly connected via a threaded fastener (11).

6. The PDS ultra-high frequency fixed ball valve according to claim 1 is characterized in that: A connecting flange (5) is provided at one end of the outlet body (2), a fixing flange (3) is provided at the other end of the outlet body (2), a flange bolt (4) is provided on one side of the fixing flange (3), and the fixing flange (3) is threadedly connected to the valve body (1) via the flange bolt (4).

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