High-pressure flat gate valve
By designing a new gate structure and combined sealing method, the problem of valve discs in high-pressure flat gate valves being unable to be repaired individually has been solved, enabling rapid replacement of valve discs and efficient sealing, thus reducing maintenance complexity and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINGGONG VALVE
- Filing Date
- 2025-07-02
- Publication Date
- 2026-05-19
AI Technical Summary
Existing high-pressure flat gate valves use an integrated structure of gate and valve disc, which makes it impossible to repair or replace them separately when damaged. The repair process is cumbersome and can easily cause secondary damage.
A novel gate structure was designed, in which the bracket is fixedly connected to the valve stem, the hook is fixedly connected to the valve disc, the groove holds the valve disc and is fixed by bolts, allowing the valve disc to be replaced and repaired. At the same time, a combination structure of O-rings, gaskets and springs is used for sealing, which disperses stress and improves the sealing effect.
It enables rapid replacement and maintenance of valve discs, ensures sealing performance, reduces maintenance difficulty and cost, and improves efficiency and safety.
Smart Images
Figure CN224260943U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flat gate valve technology, specifically to a high-pressure flat gate valve. Background Technology
[0002] In industries such as petroleum, natural gas, and chemicals, the requirements for fluid transportation and control are extremely stringent. High-pressure flat gate valves, as critical shut-off devices, directly impact the safety and stable operation of the entire system. With continuous industrial development and increasingly complex working environments, the demands on high-pressure flat gate valves are also rising.
[0003] Some high-pressure flat gate valves use an integrated gate and valve disc structure, which brings great inconvenience in actual use. When either the gate or the valve disc is damaged, because they are integrated, the damaged part cannot be repaired or replaced separately; the entire integrated structure must be disassembled for overall repair. This process is not only cumbersome and time-consuming, but also prone to secondary damage to other valve components during disassembly and reinstallation, further increasing the difficulty and cost of maintenance. Utility Model Content
[0004] Technical problems to be solved
[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a high-pressure flat gate valve, which can effectively solve the problem that some high-pressure flat gate valves in the prior art adopt an integrated structure of gate and valve disc, which also brings great inconvenience in actual use.
[0006] Technical solution
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] This utility model provides a high-pressure flat gate valve, including a valve body, a valve seat inside the valve body, a gate plate at the top of the valve seat, the top of the gate plate being fixedly connected to the valve stem, the top of the valve body being fixedly connected to the valve cover, and valve discs being fixedly connected to both sides of the gate plate. The gate plate includes a bracket and hook portions disposed on both sides of the bracket. Multiple sets of grooves are formed on the inner side of the hook portions, and the valve discs are engaged in the grooves. O-rings, sealing gaskets, and springs are fixed between the inner walls of the upper and lower ends of the valve seat and the valve body.
[0009] Furthermore, the outer side wall and bottom side wall of the valve seat are both provided with groove structures, and the O-ring is fixed to the bottom groove of the valve seat, while the sealing gasket and spring are both fixed to the groove of the outer side wall of the valve seat.
[0010] Furthermore, a spring washer is fitted on the outer side of the middle part of the valve stem, and a baffle is fixed to one end of the spring washer. The baffle is fixedly connected to the valve stem by bolts, and the top of the bolts has an internal hexagonal structure.
[0011] Furthermore, the bottom end of the hook is an arc-shaped structure, and both ends of the hook are fixedly connected to the bracket by bolts.
[0012] Furthermore, the bracket is a hollow cross structure, and its length is adapted to the size of the valve disc.
[0013] Furthermore, the hooks on both sides are bent inwards, covering the outer side of the valve disc.
[0014] Beneficial effects
[0015] The technical solution provided by this utility model has the following advantages compared with the known public technology:
[0016] This utility model features a novel gate structure. The top of the support structure is fixedly connected to the valve stem. Hook-shaped structures on both sides and at the top and bottom of the gate fix the valve disc. The groove structure in the hook-shaped structure secures the valve disc in place. The hook-shaped structure is also fixed to the support structure with bolts. Users can replace and fix the valve disc according to different sizes, facilitating valve disc replacement and maintenance. Furthermore, the upper and lower hook-shaped limiting structures allow the valve disc structure on both sides to rotate within a certain range relative to the spherical center, ensuring a proper sealing effect within a certain range and achieving rapid and efficient sealing.
[0017] In this device, the valve seat is fixed in the valve body by a combination of O-rings, sealing gaskets and springs. When the gate at the top rotates, the spring on one side can evenly distribute the stress and provide cushioning. The sealing gasket structure can strengthen the bottom seal and work with the O-rings to fix and seal, further improving the performance. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a cross-sectional view of the structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the gate and valve disc in this utility model;
[0022] Figure 4 This is a structurally exploded view of the gate and valve disc in this utility model.
[0023] The labels in the diagram represent: 1. Valve body; 2. O-ring; 3. Valve seat; 4. Sealing gasket; 5. Spring; 6. Gate; 61. Hook; 62. Groove; 63. Bracket; 7. Bolt; 8. Spring washer; 9. Baffle; 10. Valve stem; 11. Valve cover; 12. Valve disc. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0025] The present invention will be further described below with reference to the embodiments.
[0026] Example: High-pressure flat gate valve, see attached document. Figure 1 - Appendix Figure 4 The valve body includes a valve body 1, a valve seat 3 is provided inside the valve body 1, a gate 6 is provided at the top of the valve seat 3, the top of the gate 6 is fixedly connected to the valve stem 10, the top of the valve body 1 is fixedly connected to the valve cover 11, and the two sides of the gate 6 are fixedly connected to the valve disc 12. The gate 6 includes a bracket 63 and hook parts 61 provided on both sides of the bracket 63. Multiple sets of grooves 62 are opened on the inner side of the hook parts 61, and the valve disc 12 is locked in the grooves 62. O-rings 2, sealing gaskets 4 and springs 5 are fixed between the inner walls of the upper and lower ends of the valve seat 3 and the valve body 1.
[0027] The outer and bottom side walls of the valve seat 3 are provided with groove structures, and the O-ring 2 is fixed to the bottom groove of the valve seat 3. The sealing gasket 4 and the spring 5 are both fixed in the groove of the outer side wall of the valve seat 3. By setting a new gate plate 6 structure, the top of the bracket 63 structure is fixedly connected to the valve stem 10. In the gate plate 6, the hook parts 61 on both sides and the upper and lower ends are fixedly connected to the valve disc 12. The groove 62 structure in the hook part 61 can fix the valve disc 12. The hook part 61 structure is fixedly connected to the bracket 63 by bolts 7. The user can replace and fix it according to different sizes of the valve disc 12. It is also convenient to replace and repair the valve disc 12. The upper and lower hook parts 61 limit can also keep the valve disc 12 structure on both sides from rotating relative to the spherical top center within a certain range, thereby ensuring the rotation sealing effect of the valve disc 12 structure within a certain range and achieving fast and efficient sealing.
[0028] A spring washer 8 is fitted on the outer side of the middle part of the valve stem 10, and a baffle 9 is fixed to one end of the spring washer 8. The baffle 9 is fixedly connected to the valve stem 10 by bolts 7, and the top of the bolts 7 is an internal hexagonal structure. The bottom end of the hook part 61 is an arc-shaped structure, and both ends of the hook part 61 are fixedly connected to the bracket 63 by bolts 7. The bracket 63 is a hollow cross structure, and its length is adapted to the size of the valve disc 12. The hook parts 61 on both sides are bent inward and cover the outer side of the valve disc 12. The valve seat 11 is fixed in the valve body 1 by the combination structure of the O-ring 2, the sealing gasket 4 and the spring 5. When the gate 6 at the top rotates, the spring 5 on one side can evenly distribute the stress and buffer it. The sealing gasket 4 can strengthen the bottom sealing function and work with the O-ring 2 to fix and seal, further improving the performance.
[0029] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.
Claims
1. A high-pressure flat gate valve, characterized in that, The valve body (1) includes a valve seat (3) inside the valve body (1). A gate (6) is provided at the top of the valve seat (3). The top of the gate (6) is fixedly connected to the valve stem (10). The top of the valve body (1) is fixedly connected to the valve cover (11). The two sides of the gate (6) are fixedly connected to the valve disc (12). The gate (6) includes a bracket (63) and hook parts (61) provided on both sides of the bracket (63). Multiple sets of grooves (62) are opened on the inner side of the hook parts (61). The valve disc (12) is locked in the grooves (62). An O-ring (2), a sealing gasket (4) and a spring (5) are fixed between the inner walls of the upper and lower ends of the valve seat (3) and the valve body (1).
2. The high-pressure flat gate valve according to claim 1, characterized in that, The valve seat (3) has groove structures on its outer side wall and bottom side wall, and the O-ring (2) is fixed to the bottom groove of the valve seat (3). The sealing gasket (4) and the spring (5) are both fixed in the groove of the outer side wall of the valve seat (3).
3. The high-pressure flat gate valve according to claim 1, characterized in that, A spring washer (8) is sleeved on the outer side of the middle part of the valve stem (10), and a baffle (9) is fixed at one end of the spring washer (8). The baffle (9) is fixedly connected to the valve stem (10) by a bolt (7), and the top of the bolt (7) is an internal hexagonal structure.
4. The high-pressure flat gate valve according to claim 1, characterized in that, The bottom end of the hook part (61) is an arc-shaped structure, and both ends of the hook part (61) are fixedly connected to the bracket (63) by bolts (7).
5. The high-pressure flat gate valve according to claim 4, characterized in that, The bracket (63) is a hollow cross structure, and its length is adapted to the size of the valve disc (12).
6. The high-pressure flat gate valve according to claim 1, characterized in that, Both sides of the hook portion (61) are bent inward and cover the outside of the valve disc (12).