Adjusting device of ship safety valve
By using a hollow adjusting screw with graduated markings in the ship's safety valve, the problem of inconvenient adjustment of existing ship safety valves has been solved, and rapid and accurate pressure relief adjustment has been achieved.
Patent Information
- Application Number
- CN202520505753.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-21
AI Technical Summary
When adjusting the pressure relief of existing ship safety valves, the spring compression position needs to be rematched, which is inconvenient.
A regulating device for a ship safety valve was designed. The device uses a hollow regulating screw with engraved scale lines on the outer wall to indicate the pressure relief at different heights. The extension and retraction length of the spring is adjusted by rotating the hollow regulating screw, thus achieving rapid adjustment.
It enables rapid and accurate adjustment of the pressure relief, improving the convenience and accuracy of adjustment.
Smart Images
Figure CN223895157U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of safety valve technology, specifically a regulating device for a ship safety valve. Background Technology
[0002] A marine safety valve is a safety device used in ship systems, primarily to prevent pressure from exceeding a set value and ensure the safety of equipment and personnel. The main structural components of a marine safety valve include: valve body, valve cover, spring, valve seat, and valve disc. The valve body and valve cover are the main parts of the safety valve, usually made of cast iron or cast steel, and internally house the valve disc, spring, and valve seat. The spring is the core component of the safety valve, responsible for controlling the opening and closing of the valve. When the pressure exceeds the set value, the spring is pushed open, opening the valve and achieving pressure reduction. The valve seat is a washer fixed inside the valve body, cooperating with the valve disc to seal the valve. The valve disc is the key component of the valve; when the spring is pushed open, the valve disc moves away from the valve seat, allowing the medium to flow out through the valve.
[0003] When the above-mentioned ship safety valve is actually adjusted and used, the applicant found that: the pressure relief can be adjusted by adjusting the screw to compress the spring, but in actual adjustment, the personnel need to re-test and match the required pressure relief value with the spring compression position, which is inconvenient to adjust and use. In order to solve the above-mentioned problems, an adjustment device for ship safety valve is proposed. Utility Model Content
[0004] The purpose of this utility model is to provide a regulating device for a ship safety valve in order to solve the problems mentioned above.
[0005] The technical solution adopted by this utility model is as follows: A regulating device for a ship safety valve includes a valve body for a ship safety valve, a valve seat is fixedly installed inside the valve body, a valve cover is fixedly installed on the upper part of the valve body by bolts, a hollow regulating screw is threadedly connected to the top of the valve cover, a valve stem is slidably connected inside the hollow regulating screw, a connector is integrally constructed at the lower end of the valve stem, a backflushing plate is installed on the connector, a valve disc is installed at the lower part of the backflushing plate, the valve disc abuts against the top of the valve seat, a spring is provided inside the valve cover, the spring is sleeved on the valve stem, the upper part of the spring abuts against an upper spring seat sleeved on the valve stem, the lower part of the spring abuts against a lower spring seat sleeved on the valve stem, and the lower end of the hollow regulating screw abuts against the upper spring seat.
[0006] The outer wall of the hollow adjusting screw is milled with a vertical plane, and multiple scale lines are engraved from top to bottom on the vertical plane. Each scale line is engraved with a corresponding pressure value.
[0007] In a preferred embodiment, a guide sleeve is installed between the valve body and the valve cover, and the backflush disc is slidably guided to the guide sleeve.
[0008] In a preferred embodiment, the diameter of the connector is larger than the diameter of the valve stem, and the upper part of the connector abuts against the lower spring seat.
[0009] In a preferred embodiment, the upper end of the hollow adjusting screw is provided with an external hexagonal wrench head.
[0010] In a preferred embodiment, a locking nut is threaded onto the upper part of the hollow adjusting screw.
[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0012] 1. In this utility model, the pressure relief corresponding to the spring at different heights is represented by the scale lines and pressure values on the hollow adjusting screw. When adjusting, the operator only needs to align the scale line corresponding to the pressure value with the top of the valve cover, thereby achieving quick adjustment and making adjustment and use more convenient. Attached Figure Description
[0013] Figure 1 This is a simplified schematic diagram of the three-dimensional structure of this utility model;
[0014] Figure 2 This is a simplified schematic diagram of the internal structure of this utility model;
[0015] Figure 3 This is a simplified three-dimensional structural diagram of the hollow adjusting screw in this utility model.
[0016] The markings in the diagram are: 1-valve body, 2-valve seat, 3-valve cover, 4-hollow adjusting screw, 5-valve stem, 6-connector, 7-recoil plate, 8-valve disc, 9-spring, 10-upper spring seat, 11-lower spring seat, 12-vertical plane, 13-scale line, 14-pressure value, 15-guide sleeve, 16-external hexagonal wrench head, 17-locking nut. Detailed Implementation
[0017] 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 in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0018] The following will combine Figures 1-3A detailed description is provided of a regulating device for a ship safety valve according to an embodiment of this utility model.
[0019] Example:
[0020] This utility model provides an adjustment device for a ship safety valve, with reference to... Figures 1 to 3 As shown, the valve includes a valve body 1 for a marine safety valve. A valve seat 2 is fixedly installed inside the valve body 1. A valve cover 3 is bolted to the upper part of the valve body 1. A hollow adjusting screw 4 is threaded to the top of the valve cover 3. A valve stem 5 is slidably connected inside the hollow adjusting screw 4. A connector 6 is integrally formed at the lower end of the valve stem 5. A backflow disc 7 is installed on the connector 6. A valve disc 8 is installed at the lower part of the backflow disc 7. The valve disc 8 abuts against the top of the valve seat 2. A spring 9 is installed inside the valve cover 3. The spring 9 is sleeved on the valve stem 5. The upper part of the spring 9 abuts against the valve seat 5. The upper spring seat 10 is connected to the lower spring seat 11 sleeved on the valve stem 5. The lower end of the hollow adjusting screw 4 is connected to the upper spring seat 10. The above structure constitutes a marine safety valve. When in use, when the pressure in the pipeline reaches the preset value, the pressure in the pipeline will push the back pressure plate 7 on the valve disc 8, thereby causing the connector 6 to push the lower spring seat 11, thus overcoming the elastic force of the spring 9, thereby driving the valve stem 5 to move upward, thereby opening the valve seat 2, so that the pipeline pressure can be released from the top of the valve seat 2, thereby playing the role of pressure relief protection.
[0021] Furthermore, during use, the extension and retraction length of the spring 9 can be adjusted by rotating the hollow adjusting screw 4, thereby adjusting the actual pressure relief.
[0022] refer to Figures 1 to 3 As shown, the outer wall of the hollow adjusting screw 4 is milled with a vertical plane 12. The vertical plane 12 is engraved with multiple scale lines 13 from top to bottom. Each scale line 13 is engraved with a corresponding pressure value 14. In this structure, during the factory test of the safety valve, according to the actual test, the personnel can indicate the pressure relief pressure corresponding to the spring 9 at different heights by using the scale lines 13 and pressure values 14 of the hollow adjusting screw 4. In this way, when adjusting, the personnel only need to adjust the scale line 13 corresponding to the pressure value 14 to be flush with the top of the valve cover 3, thereby achieving quick adjustment and making adjustment and use more convenient.
[0023] refer to Figures 1 to 3 As shown, a guide sleeve 15 is installed between the valve body 1 and the valve cover 3. The backflush disc 7 is slidably guided by the guide sleeve 15. This structure uses the guide sleeve 15 to guide the up and down movement of the backflush disc 7.
[0024] refer to Figures 1 to 3 As shown, the diameter of connector 6 is larger than the diameter of valve stem 5, and the upper part of connector 6 abuts against the lower spring seat 9.
[0025] refer to Figures 1 to 3 As shown, the upper end of the hollow adjusting screw 4 is equipped with an external hexagonal wrench head 16. This structure allows personnel to easily rotate the hollow adjusting screw 4 using a wrench.
[0026] refer to Figures 1 to 3 As shown, the upper part of the hollow adjusting screw 4 is threaded with a locking nut 17, which is part of the secondary structure.
[0027] The implementation principle of the regulating device for a ship safety valve in this application embodiment is as follows: when the pressure in the pipeline reaches a preset value, the pressure in the pipeline will push the back pressure plate 7 on the valve disc 8, thereby causing the connector 6 to push the lower spring seat 11, thereby overcoming the elastic force of the spring 9, thereby driving the valve stem 5 to move upward, thereby opening the valve seat 2, so that the pipeline pressure can be released from the top of the valve seat 2, thereby playing the role of pressure relief protection.
[0028] Furthermore, during use, the extension and retraction length of the spring 9 can be adjusted by rotating the hollow adjusting screw 4, thereby adjusting the actual pressure relief. When adjusting the hollow adjusting screw 4, it is only necessary to adjust the scale line 13 of the corresponding pressure value 14 to be flush with the top of the valve cover 3, thereby achieving quick and accurate adjustment and making adjustment and use more convenient.
[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 do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A regulating device for a ship safety valve, comprising a valve body (1) for the ship safety valve, characterized in that: A valve seat (2) is fixedly installed inside the valve body (1). A valve cover (3) is fixedly installed on the upper part of the valve body (1) by bolts. A hollow adjusting screw (4) is threadedly connected to the top of the valve cover (3). A valve stem (5) is slidably connected inside the hollow adjusting screw (4). A connector (6) is integrally constructed at the lower end of the valve stem (5). A backflush disc (7) is installed on the connector (6). A valve disc (8) is installed at the lower part of the backflush disc (7). The valve disc (8) abuts against the top of the valve seat (2), and a spring (9) is provided inside the valve cover (3). The spring (9) is sleeved on the valve stem (5). The upper part of the spring (9) abuts against the upper spring seat (10) sleeved on the valve stem (5), and the lower part of the spring (9) abuts against the lower spring seat (11) sleeved on the valve stem (5). The lower end of the hollow adjusting screw (4) abuts against the upper spring seat (10). The outer wall of the hollow adjusting screw (4) is milled with a vertical plane (12), and the vertical plane (12) is engraved with multiple scale lines (13) from top to bottom. Each scale line (13) is engraved with a corresponding pressure value (14).
2. The regulating device for a ship safety valve as described in claim 1, characterized in that: A guide sleeve (15) is installed between the valve body (1) and the valve cover (3), and the backflush disc (7) is slidably guided to the guide sleeve (15).
3. The regulating device for a ship safety valve as described in claim 1, characterized in that: The diameter of the connector (6) is larger than the diameter of the valve stem (5), and the upper part of the connector (6) abuts against the lower spring (9) seat.
4. The regulating device for a ship safety valve as described in claim 1, characterized in that: The upper end of the hollow adjusting screw (4) is equipped with an external hexagonal wrench head (16).
5. The regulating device for a ship safety valve as described in claim 1, characterized in that: The upper part of the hollow adjusting screw (4) is threaded with a locking nut (17).