Elastic sealing V-shaped ball valve

Abstract

The invention discloses an elastically sealed V-shaped ball valve, and belongs to the technical field of ball valves, the elastically sealed V-shaped ball valve comprises a first screw and nut and a valve core assembly, the valve core assembly comprises a third screw and nut, a valve plug, a valve core and a disc spring, the valve plug and the valve core are connected through the third screw and nut, the disc spring is arranged between the valve plug and the valve core, and the valve plug is connected with the valve core through the disc spring. Through the elastic effect of the disc spring and the separated design of the valve plug and the valve element, the efficient sealing performance is achieved. When the valve is closed, the disc spring pushes the valve plug to move forwards to be close to the valve seat, tight radial sealing is formed, and it is guaranteed that media cannot leak. Meanwhile, the valve seat is fixed through the pressing plate, and a sealing gasket is arranged, so that the radial sealing effect is further enhanced.

Description

Technical Field

[0001] The present invention relates to the field of ball valves, and specifically to an elastomeric-sealed V-ball valve. Background Art

[0002] With the advancement of industrial automation and intelligent manufacturing, the demand for high-performance valves in industries such as petrochemical, water treatment, and power has been continuously increasing. Especially under harsh working conditions such as high temperature, high pressure, and corrosive media, the elastomeric-sealed V-ball valve has broad application prospects due to its excellent sealing performance and stability.

[0003] The elastomeric seal of traditional V-ball valves is generally designed on the valve seat, called an elastomeric valve seat. However, due to the complex structure of this elastomeric valve seat seal, it requires a large installation space, and the installation is complex, and the elastomeric transmission ability is poor, making it impossible to use for valve bodies with a small flange distance. Summary of the Invention

[0004] The purpose of the present invention is to provide an elastomeric-sealed V-ball valve.

[0005] To achieve the above purpose, the present invention provides the following technical solution: It includes a first screw nut and a spool assembly. The spool assembly includes a third screw nut, a valve plug, a spool, and a disc spring. The valve plug and the spool are connected by the third screw nut, and the disc spring is arranged between the valve plug and the spool;

[0006] As a further preference of this technical solution: A sealing gasket is provided on one side of the first screw nut. A bottom plug shaft is provided on one side of the sealing gasket. A valve body is provided on one side of the bottom plug shaft. A lower guide sleeve is provided on one side of the bottom plug shaft. A second screw nut is provided on one side of the valve body. A pressing plate is provided on one side of the second screw nut. A valve seat sealing gasket is provided on one side of the pressing plate. A valve seat is provided on one side of the valve seat sealing gasket. A spool assembly is provided on one side of the valve seat. An upper guide sleeve is provided on the upper side of the spool assembly. A half-ring is provided on the upper side of the upper guide sleeve. A thrust ring is provided on one side of the half-ring. A packing assembly is provided on the upper side of the thrust ring. A packing gland is provided on the upper side of the packing assembly. A packing pressing plate is provided on the outside of the packing gland. Stud nuts are provided on the packing pressing plate;

[0007] As a further preference of this technical solution: When the spool and the packing assembly are fixed by the third screw nut, there is a certain distance left between the spool and the spool, so that the spool and the disc spring can be separated without being detached;

[0008] As a further preference of this technical solution: There are two groups of the first screw nuts and they are symmetrically arranged;

[0009] As a further preference of this technical solution: The bottom plug shaft is arranged inside the valve body;

[0010] As a further preference of the present technical solution: The lower guide sleeve is arranged on the outer upper side of the bottom plug shaft;

[0011] As a further preference of the present technical solution: There are two groups of valve seats and they are arranged on the upper and lower sides of the valve core assembly;

[0012] As a further preference of the present technical solution: There are two groups of stud nuts and they are symmetrically arranged.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the present invention, through the elastic action of the disc spring and the separation design of the valve plug and the valve core, high-efficiency sealing performance is achieved. When the valve is closed, the disc spring pushes the valve plug forward to closely approach the valve seat, forming a tight radial seal to ensure that the medium does not leak. At the same time, the valve seat is fixed by a pressing plate and is equipped with a sealing gasket, further enhancing the radial sealing effect;

[0015] 2. In the present invention, due to the simple and compact structure design of the valve, the valve seat is fixed by a pressing plate, and the valve core and the valve plug are connected by the third screw nut, which is convenient for quick disassembly and replacement. The radial sealing design of the valve seat sealing gasket simplifies the installation and maintenance process, making the replacement of the valve seat not require complex tools or professional personnel. In addition, the axial sealing design of the packing assembly and the packing gland also ensures the sealing between the valve stem and the valve body, further reducing the maintenance difficulty. This design not only saves maintenance time and cost but also improves the use efficiency of the valve;

[0016] 3. In the present invention, through the elastic connection design between the valve core and the valve plug, it is ensured that the valve always maintains good sealing performance during the opening and closing processes, and at the same time, the risk of separation between the valve core and the valve plug is avoided. The symmetrically arranged first screw nuts and stud nuts ensure uniform force on the valve and improve the overall stability. The design of the double-group valve seat and the upper and lower guide sleeves further enhances the sealing performance and movement smoothness of the valve. This design enables the valve to be widely applied to the pipeline systems in industries such as chemical industry, petroleum, and natural gas to meet the sealing and control requirements under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of an elastic-sealed V-ball valve of the present invention Figure 1 ;

[0018] Figure 2 is a structural schematic diagram of an elastic-sealed V-ball valve of the present invention Figure 2 。

[0019] In the figure: 1. First screw nut; 2. Sealing gasket; 3. Bottom plug shaft; 4. Valve body; 5. Lower guide sleeve; 6. Second screw nut; 7. Pressure plate; 8. Valve seat sealing gasket; 9. Valve seat; 10. Spool assembly; 11. Upper guide sleeve; 12. Half ring; 13. Thrust ring; 14. Packing assembly; 15. Packing gland; 16. Packing pressure plate; 17. Stud nut; 101. Third screw nut; 102. Valve plug; 103. Spool; 104. Disc spring. Detailed implementation mode

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment

[0022] Please refer to Figure 1 - Figure 2 As shown, the present invention provides a technical solution: including a first screw nut 1 and a spool assembly 10. The spool assembly 10 includes a third screw nut 101, a valve plug 102, a spool 103 and a disc spring 104. The valve plug 102 and the spool 103 are connected by the third screw nut 101. The disc spring 104 is arranged between the valve plug 102 and the spool 103. Through the elastic action of the disc spring and the separation design of the valve plug and the spool, high-efficiency sealing performance is achieved. When the valve is closed, the disc spring pushes the valve plug forward to closely approach the valve seat, forming a tight radial seal to ensure that the medium will not leak. At the same time, the valve seat is fixed by a pressure plate and is equipped with a sealing gasket, further enhancing the radial sealing effect.

[0023] In this embodiment, specifically: a sealing gasket 2 is provided on one side of the first screw nut 1, a bottom plug shaft 3 is provided on one side of the sealing gasket 2, a valve body 4 is provided on one side of the bottom plug shaft 3, a lower guide sleeve 5 is provided on one side of the bottom plug shaft 3, a second screw nut 6 is provided on one side of the valve body 4, a pressing plate 7 is provided on one side of the second screw nut 6, a valve seat sealing gasket 8 is provided on one side of the pressing plate 7, a valve seat 9 is provided on one side of the valve seat sealing gasket 8, a valve core assembly 10 is provided on one side of the valve seat 9, an upper guide sleeve 11 is provided on the upper side of the valve core assembly 10, a half ring 12 is provided on the upper side of the upper guide sleeve 11, a thrust ring 13 is provided on one side of the half ring 12, a packing assembly 14 is provided on the upper side of the thrust ring 13, a packing gland 15 is provided on the upper side of the packing assembly 14, a packing pressing plate 16 is provided on the outside of the packing gland 15, and stud nuts 17 are provided on the packing pressing plate 16. Through the concise and compact structural design of the valve, the valve seat is fixed by the pressing plate, and the valve core and the valve plug are connected by the third screw nut, which is convenient for quick disassembly and replacement. The radial sealing design of the valve seat sealing gasket simplifies the installation and maintenance processes, making the replacement of the valve seat unnecessary complex tools or professional personnel. In addition, the axial sealing design of the packing assembly and the packing gland also ensures the sealing between the valve stem and the valve body, further reducing the maintenance difficulty. This design not only saves maintenance time and costs, but also improves the use efficiency of the valve.

[0024] In this embodiment, specifically: when the valve core 103 and the packing assembly 14 are fixed by the third screw nut 101, there is a certain distance left between the valve core 103, so that the valve core 103 and the disc spring 104 can be separated without disengaging.

[0025] In this embodiment, specifically: there are two groups of the first screw nuts 1 and they are symmetrically arranged.

[0026] In this embodiment, specifically: the bottom plug shaft 3 is arranged inside the valve body 4.

[0027] In this embodiment, specifically: the lower guide sleeve 5 is arranged on the upper outer side of the bottom plug shaft 3.

[0028] In this embodiment, specifically: there are two groups of the valve seats 9 and they are arranged on the upper and lower sides of the valve core assembly 10.

[0029] In this embodiment, specifically: there are two groups of the stud nuts 17 and they are symmetrically arranged.

[0030] Working principle or structural principle: When the valve is closed, under the elastic action of the disc spring, the valve core assembly moves forward, and there is a certain distance between the valve plug and the valve core, so that the valve plug can be close to the valve seat. The close contact between the valve plug and the valve seat forms an effective radial seal to ensure that the medium will not leak.

[0031] When the valve is opened, the third screw nut fixedly connects the valve plug and the valve core. Although there is a certain distance between the valve plug and the valve core, the fixing effect of the screw ensures that the valve plug and the valve core will not separate. This design not only ensures the elastic sealing performance of the valve core but also ensures the stability of the valve in the open state.

[0032] The valve seat is fixed to the valve body through a pressing plate, and the valve seat gasket provides radial sealing. This design structure is simple, facilitating the quick replacement of the valve seat and improving the convenience of maintenance.

[0033] The packing assembly is installed around the valve stem. The packing gland and the packing pressing plate are fixed through stud nuts. The packing assembly provides axial sealing to ensure the sealing between the valve stem and the valve body.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A V-type ball valve with elastic sealing, characterized in that: The invention comprises a first screw nut (1) and a valve core assembly (10), wherein the valve core assembly (10) comprises a third screw nut (101), a valve plug (102), a valve core (103) and a disc spring (104), wherein the valve plug (102) and the valve core (103) are connected via the third screw nut (101), and the disc spring (104) is arranged between the valve plug (102) and the valve core (103).

2. The elastically sealed V-shaped ball valve according to claim 1, characterized in that: A sealing gasket (2) is provided on one side of the first screw nut (1), a bottom plug shaft (3) is provided on one side of the sealing gasket (2), a valve body (4) is provided on one side of the bottom plug shaft (3), a lower guide sleeve (5) is provided on one side of the bottom plug shaft (3), a second screw nut (6) is provided on one side of the valve body (4), a pressure plate (7) is provided on one side of the second screw nut (6), a valve seat sealing gasket (8) is provided on one side of the pressure plate (7), a valve seat (9) is provided on one side of the valve seat sealing gasket (8), and the valve seat (9) is provided on one side of the valve seat ( 9), a valve core assembly (10) is provided on one side, an upper guide sleeve (11) is provided on the upper side of the valve core assembly (10), a half ring (12) is provided on the upper side of the upper guide sleeve (11), a thrust ring (13) is provided on one side of the half ring (12), a packing assembly (14) is provided on the upper side of the thrust ring (13), a packing gland (15) is provided on the upper side of the packing assembly (14), a packing gland (16) is provided on the outer side of the packing gland (15), and a stud nut (17) is provided on the packing gland (16).

3. The elastically sealed V-shaped ball valve according to claim 2, characterized in that: When the valve core (103) and the packing assembly (14) are fixed by the third screw nut (101), a certain distance is left between the valve core (103) and the disc spring (104), so that the valve core (103) and the disc spring (104) can be separated without being disengaged.

4. The elastically sealed V-shaped ball valve according to claim 3, characterized in that: The first screw nuts (1) are provided in two groups and are symmetrically arranged.

5. The elastically sealed V-shaped ball valve according to claim 4, characterized in that: The bottom plug shaft (3) is arranged on the inner side of the valve body (4).

6. The elastically sealed V-shaped ball valve according to claim 5, characterized in that: The lower guide sleeve (5) is arranged on the upper outer side of the bottom plug shaft (3).

7. The elastically sealed V-shaped ball valve according to claim 6, characterized in that: The valve seats (9) are provided in two groups and are arranged on the upper and lower sides of the valve core assembly (10).

8. The elastically sealed V-shaped ball valve according to claim 7, characterized in that: The stud nuts (17) are provided in two groups and are symmetrically arranged.

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