A ferrule plug valve

Abstract

The utility model relates to the field of valve technology, specifically a sleeve plug valve, including a valve body, a plug installed inside the valve body, an oil storage groove arranged between the outer wall of the plug and the inner wall of the valve body, a channel arranged on the top of the plug, an oil filling screw installed at the channel mouth, a check valve installed inside the channel of the plug, a flow channel arranged in the middle of the valve body, an opening arranged transversely in the middle of the plug, and the plug realizes the opening and closing of the channel by rotation. In the sleeve plug valve, the sealing performance and service life of the valve are significantly improved through the unique design and high-quality material selection, especially in harsh working environments such as high pressure, high temperature and corrosive media. The oil storage groove design between the valve body and the plug not only provides a good lubrication effect and reduces wear, but also enhances the sealing performance and effectively prevents fluid leakage.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a sleeve plug valve. Background Art

[0002] Valves are vital components in fluid control systems and are widely used in various industrial pipelines to control the flow, pressure and direction of fluids. As an important type of valve, plug valves have the advantages of simple structure, easy operation and good sealing. Therefore, they are widely used in the fields of petroleum, chemical industry, water treatment, natural gas, etc.

[0003] However, during the use of traditional plug valves, problems such as poor sealing, easy wear, and short service life often affect their use effect. Especially in harsh working environments such as high pressure, high temperature, and corrosive media, the performance and reliability of traditional plug valves are often difficult to meet actual needs. In order to solve these problems, it is necessary to innovate and improve the structure and materials of the plug valve to improve its sealing performance and service life and adapt to a wider range of working environments. The utility model sleeve plug valve came into being under such a technical background, and aims to provide a high-performance and high-reliability plug valve solution through unique structure and material design. Utility Model Content

[0004] The purpose of the utility model is to provide a sleeve plug valve to solve the problem that the traditional plug valve mentioned in the above background technology is often affected by the problems of poor sealing, easy wear, short service life, etc. during use. In particular, in harsh working environments such as high pressure, high temperature, and corrosive media, the performance and reliability of traditional plug valves are often difficult to meet actual needs.

[0005] To achieve the above-mentioned purpose, the utility model provides a sleeve plug valve, including a valve body, a plug is installed inside the valve body, an oil storage groove is arranged between the outer wall of the plug and the inner wall of the valve body, a channel is arranged on the top of the plug, an oil filling plug is installed at the channel mouth, a check valve is installed inside the channel of the plug, a flow channel is arranged in the middle of the interior of the valve body, an opening is arranged horizontally in the middle of the plug, and the plug realizes opening and closing of the flow channel by rotation.

[0006] Preferably, a valve cover is installed on the top of the valve body, a pressure plate is installed on the top of the valve cover through bolts, a spring washer is installed at the bolt head, and a sealing ring is installed on the outside of the spring washer.

[0007] Preferably, a sealing packing is installed on the upper part of the plug close to the inner wall of the valve body, and retaining rings are installed on the upper and lower sides of the sealing packing.

[0008] Preferably, the retaining ring is made of carbon graphite reinforced tetrafluoroethylene material.

[0009] Preferably, a polytetrafluoroethylene diaphragm is installed between the top of the valve body and the bottom of the valve cover.

[0010] Preferably, a polytetrafluoroethylene upper bushing is installed between the outer wall of the plug and the upper inner wall of the inner cavity of the valve body, and a polytetrafluoroethylene lower bushing is installed between the outer wall of the plug and the lower inner wall of the inner cavity of the valve body, and a sealing surface is formed between the polytetrafluoroethylene upper bushing, the polytetrafluoroethylene lower bushing, the plug and the valve body.

[0011] Preferably, a sealing edge is provided at the lower inner portion of the valve body near the plug.

[0012] Preferably, an internal thread is provided at the top channel opening of the plug, and the oil filling screw is threadably connected to the plug.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The unique design and high-quality material selection of this sleeve plug valve significantly improve the sealing performance and service life of the valve, especially in harsh working environments such as high pressure, high temperature and corrosive media. The oil storage groove design between the valve body and the plug not only provides good lubrication and reduces wear, but also enhances the sealing performance and effectively prevents fluid leakage. At the same time, the upper and lower bushings made of polytetrafluoroethylene material further enhance the corrosion resistance and wear resistance of the valve and extend its service life. In addition, the sealing ridge design inside the valve body and the check valve inside the plug provide double protection to prevent fluid backflow, ensuring the safety and reliability of the valve. Overall, the sleeve plug valve of the utility model embodies innovation and optimization in both structural design and material selection, providing a high-performance and high-reliability solution for the field of valve technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is one of the internal structure schematic diagrams of the utility model;

[0017] Figure 3 This is the second schematic diagram of the internal structure of the present utility model.

[0018] The meaning of each number in the figure is:

[0019] 1. Valve body; 11. Spring washer; 12. Sealing ring; 13. Sealing packing; 14. Retaining ring; 15. PTFE upper bushing; 16. Sealing surface; 17. PTFE lower bushing; 18. PTFE diaphragm; 19. Flow channel; 110. Sealing edge; 2. Plug; 3. Oil filling screw plug; 4. Oil storage groove; 5. Check valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0021] The utility model provides a sleeve plug valve, such as Figure 1-Figure 3 As shown, it includes a valve body 1, a plug 2 is installed inside the valve body 1, an oil storage groove 4 is arranged between the outer wall of the plug 2 and the inner wall of the valve body 1, a channel is arranged on the top of the plug 2, an oil injection screw 3 is installed at the channel mouth, a check valve 5 is installed inside the channel of the plug 2, a flow channel 19 is arranged in the middle of the valve body 1, an opening is arranged horizontally in the middle of the plug 2, the plug 2 realizes the opening and closing of the flow channel 19 by rotation, and the oil storage groove 4 is used to store lubricating oil to ensure the smoothness of the plug 2 during the rotation process and reduce wear. The oil injection screw 3 allows the user to inject lubricating oil into the oil storage groove 4 to keep the valve in good operating condition. The check valve 5 prevents the fluid from flowing back and ensures that the fluid can only flow in one direction. When the plug 2 is rotated to a specific position, its opening is aligned with the flow channel 19, so that the fluid can pass through the valve. By rotating the plug 2, the flow channel 19 can be opened and closed, thereby controlling the flow of the fluid.

[0022] In this embodiment, a valve cover is installed on the top of the valve body 1, a pressure plate is installed on the top of the valve cover by bolts, and a spring washer 11 is installed at the bolt head, and a sealing ring 12 is installed on the outside of the spring washer 11. The spring washer 11 provides a constant pressure on the packing, which can compensate for the thermal expansion and contraction of the packing caused by temperature changes. In order to prevent the spring washer 11 from being damaged and dust intrusion, the outside of the spring washer 11 is covered.

[0023] Specifically, a sealing packing 13 is installed on the upper part of the plug 2 near the inner wall of the valve body 1, and retaining rings 14 are installed on the upper and lower sides of the sealing packing 13 to prevent the packing from being extruded.

[0024] Furthermore, the retaining ring 14 is made of carbon graphite reinforced tetrafluoroethylene material to ensure the sealing performance of the packing.

[0025] Furthermore, a polytetrafluoroethylene diaphragm 18 is installed between the top of the valve body 1 and the bottom of the valve cover to improve the sealing effect at the valve cover.

[0026] Furthermore, a polytetrafluoroethylene upper bushing 15 is installed between the outer wall of the plug 2 and the upper inner wall of the inner cavity of the valve body 1, and a polytetrafluoroethylene lower bushing 17 is installed between the outer wall of the plug 2 and the lower inner wall of the inner cavity of the valve body 1. A sealing surface 16 is formed between the polytetrafluoroethylene upper bushing 15, the polytetrafluoroethylene lower bushing 17, the plug 2 and the valve body 1 to ensure good sealing.

[0027] Furthermore, a sealing edge 110 is provided at the lower part of the interior of the valve body 1 near the plug 2, which can withstand high pressure and ensure a tight seal.

[0028] Furthermore, an internal thread is provided at the top channel opening of the plug 2, and the oil filling screw plug 3 is threadedly connected to the plug 2, so that the oil filling screw plug 3 can be screwed tightly to the channel opening.

[0029] When the ferrule plug valve of the utility model is used, first in the initial state, the opening of the plug 2 is offset from the flow channel 19 inside the valve body 1, and the valve is in a closed state, and fluid cannot pass through. When the user needs to open the valve, the plug 2 can be rotated to align its opening with the flow channel 19.

[0030] During the rotation process, the lubricating oil in the oil storage groove 4 ensures the smooth rotation of the plug 2, reducing wear and friction resistance. At the same time, the check valve 5 inside the plug 2 prevents the fluid from flowing back and ensures the one-way flow of the fluid.

[0031] When the opening of the plug 2 is completely aligned with the flow channel 19, the valve is in a fully open state and the fluid can freely pass through the valve. At this time, the sealing surface 16 formed between the valve body 1, the plug 2, and the polytetrafluoroethylene upper bushing 15 and the polytetrafluoroethylene lower bushing 17 ensures the sealing performance of the valve and prevents fluid leakage.

[0032] When the user needs to close the valve, he only needs to rotate the plug 2 back to the initial position so that its opening is offset from the flow channel 19 again. In this process, the spring washer 11 and the sealing ring 12 ensure the tight connection between the valve cover and the valve body 1, preventing the intrusion of external dust and impurities.

[0033] In addition, the arrangement of the sealing packing 13 and the retaining ring 14 provides additional sealing protection for the valve. The sealing edge 110 at the lower part of the valve body 1 further enhances the pressure resistance and sealing performance of the valve.

[0034] The above shows and describes the basic principle, 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 preferred examples of the utility model and are not used to limit 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.

Claims

1. A sleeve plug valve, comprising a valve body (1), characterized in that: A plug (2) is installed inside the valve body (1), an oil storage groove (4) is arranged between the outer wall of the plug (2) and the inner wall of the valve body (1), a channel is arranged at the top of the plug (2), an oil injection screw plug (3) is installed at the channel opening, a check valve (5) is installed inside the channel of the plug (2), a flow channel (19) is arranged in the middle of the valve body (1), an opening is arranged horizontally in the middle of the plug (2), and the plug (2) realizes opening and closing of the flow channel (19) by rotating.

2. The ferrule plug valve according to claim 1, characterized in that: A valve cover is installed on the top of the valve body (1), a pressure plate is installed on the top of the valve cover via bolts, a spring washer (11) is installed at the bolt head, and a sealing ring (12) is installed on the outside of the spring washer (11).

3. The ferrule plug valve according to claim 1, characterized in that: A sealing packing (13) is installed on the upper part of the plug (2) close to the inner wall of the valve body (1), and retaining rings (14) are installed on the upper and lower sides of the sealing packing (13).

4. The ferrule plug valve according to claim 3, characterized in that: The retaining ring (14) is made of carbon graphite reinforced tetrafluoroethylene material.

5. The ferrule plug valve according to claim 2, characterized in that: A polytetrafluoroethylene diaphragm (18) is installed between the top of the valve body (1) and the bottom of the valve cover.

6. The ferrule plug valve according to claim 1, characterized in that: A polytetrafluoroethylene upper bushing (15) is installed between the outer wall of the plug (2) and the upper inner wall of the inner cavity of the valve body (1), and a polytetrafluoroethylene lower bushing (17) is installed between the outer wall of the plug (2) and the lower inner wall of the inner cavity of the valve body (1), and a sealing surface (16) is formed between the polytetrafluoroethylene upper bushing (15), the polytetrafluoroethylene lower bushing (17), the plug (2) and the valve body (1).

7. The ferrule plug valve according to claim 1, characterized in that: A sealing edge (110) is provided at the lower part of the interior of the valve body (1) near the plug (2).

8. The ferrule plug valve according to claim 1, characterized in that: An internal thread is provided at the top channel opening of the cock (2), and the oil filling screw plug (3) is threadedly connected to the cock (2).

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