Valve cover for safe gas discharge valve

Abstract

The utility model provides a valve cover for a gas safety discharge valve, which comprises a valve cover, a valve rod connecting pipe, a U-shaped strip and a magnetic cover plate, a plurality of positioning holes and a plurality of circulating holes are equidistantly arranged on the circumference above the valve cover, the plurality of circulating holes are equal to the plurality of positioning holes in number, first threads are respectively arranged in the plurality of positioning holes, a threaded hole is arranged in the middle above the valve cover, and the threaded hole is communicated with the U-shaped strip. A storage groove is formed in the annular side face of the valve deck, a containing groove is formed in the bottom of the storage groove, a magnetic square frame is installed on the edge side of the upper portion of the containing groove, a plurality of oil outlet holes are formed in the multiple positioning holes respectively, and the magnetism of the magnetic cover plate is opposite to the magnetism of the magnetic square frame. The U-shaped strip can be taken and used at any time, the disassembly work of the valve rod connecting pipe is greatly facilitated through the cooperation of the U-shaped strip and the hexagonal limiting hole, the process of adding lubricating oil by workers is simplified through the cooperation of the circulation hole and the oil outlet hole, and meanwhile the bolt is well lubricated.

Description

Technical Field

[0001] This utility model relates to a valve cover for a gas safety discharge valve, belonging to the technical field of valve covers for gas safety discharge valves. Background Technology

[0002] The valve cover is a valve part containing valve stem seals, used to connect or support the actuator. The valve cover and valve body can be an integral unit or separate. In gate valves, the valve cover mainly serves to tighten the packing. Existing valve covers for gas safety emission valves require bolts to connect the valve stem when fixing it. These bolts are prone to rusting during the fixing process. This means that when workers disassemble the valve stem, they need to unscrew the rusted bolts first. Since rusted bolts are difficult to unscrew, this increases the workload of disassembling the valve stem. At the same time, existing valve covers for gas safety emission valves often have a limited range of applications. Because different valve stem diameters exist, such a valve cover is often suitable for several types of valve stems, resulting in a limited applicability of the valve cover.

[0003] Patent No. CN209370558U discloses a valve cover for a gas safety discharge valve. It features a connecting pipe and a through hole, with one side of the through hole connected to a second threaded hole via the connecting pipe, and the connecting pipe angled downwards along the direction of the second threaded hole. When a worker removes the bolt fixed in the second threaded hole, they first pour lubricating oil into the through hole. The lubricating oil then slides through the connecting pipe into the second threaded hole, lubricating both the second threaded hole and the fixed bolt, thus facilitating the removal of the bolt and the valve stem. However, this device lacks a suitable point of force application when rotating the valve stem connecting pipe, making removal difficult. Furthermore, it requires sequentially adding lubricating oil into multiple through holes to achieve widespread lubrication of the second threaded hole, making the lubrication process cumbersome and inconvenient. Therefore, a valve cover for a gas safety discharge valve is urgently needed to address these problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a valve cover for a gas safety discharge valve, thereby solving the problems mentioned in the background art. This utility model has a reasonable structure and good practicality. By setting a slot for placing a U-shaped strip, the U-shaped strip can be easily removed and used. Combined with the hexagonal limiting hole, it greatly facilitates the disassembly of the valve stem connecting pipe. Moreover, the matching of the flow hole and the oil outlet hole simplifies the process of adding lubricating oil for the operator, while also providing good lubrication for the bolts.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a valve cover for a gas safety discharge valve, comprising a valve cover, a valve stem connecting pipe, a U-shaped strip, and a magnetic cover plate. The valve cover has multiple positioning holes and multiple flow holes equidistantly spaced on its upper circumference, with the number of flow holes equal to the number of positioning holes. Each of the positioning holes has a first thread inside. A threaded hole is located in the center of the upper part of the valve cover. A storage groove is located on the annular side of the valve cover, and a placement groove is located at the bottom of the storage groove. A magnetic frame is installed on the upper side of the placement groove. A second thread is located on the annular side of the valve stem connecting pipe. The U-shaped strip has a regular hexagonal cross-section. Multiple oil outlet holes are located inside the multiple positioning holes. The magnetic properties of the magnetic cover plate are opposite to those of the magnetic frame.

[0006] Furthermore, the flow paths of the plurality of flow holes are spiral-shaped, and the plurality of oil outlet holes are arranged along the flow paths of the plurality of flow holes.

[0007] Furthermore, hexagonal limiting holes are symmetrically provided above the valve stem connecting pipe.

[0008] Furthermore, the multiple oil outlet holes are respectively connected to multiple flow holes.

[0009] Furthermore, the area of ​​the regular hexagonal cross-section of the two hexagonal limiting holes is greater than the area of ​​the regular hexagonal cross-section of the U-shaped strip.

[0010] Furthermore, the valve cover is made of alloy steel.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a valve cover for a gas safety discharge valve. Because it incorporates a valve stem connecting pipe, a U-shaped strip, a positioning hole, a first thread, a flow hole, a threaded hole, a storage groove, a magnetic cover plate, a placement groove, a hexagonal limiting hole, and an oil outlet hole, our design improvements and practical use have shown that this device has a reasonable structure and good practicality. The groove for placing the U-shaped strip allows for easy access and use. The hexagonal limiting hole greatly facilitates the disassembly of the valve stem connecting pipe. Furthermore, the combination of the flow hole and the oil outlet hole simplifies the process of adding lubricating oil and provides good lubrication for the bolts. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a valve cover for a gas safety emission valve according to the present invention;

[0014] Figure 2This is a three-dimensional schematic diagram of the valve cover structure for a gas safety emission valve according to the present invention;

[0015] Figure 3 This is a three-dimensional schematic diagram of the valve stem connecting pipe structure of a valve cover for a gas safety emission valve according to the present invention;

[0016] Figure 4 This is a three-dimensional schematic diagram of the U-shaped strip structure of a valve cover for a gas safety emission valve according to the present invention;

[0017] Figure 5 This is a three-dimensional cross-sectional view of the valve cover structure of a gas safety discharge valve according to the present invention.

[0018] In the diagram: 1-valve cover, 2-valve stem connecting pipe, 3-U-shaped strip, 4-positioning hole, 5-first thread, 6-flow hole, 7-threaded hole, 8-storage slot, 9-magnetic cover plate, 10-placement slot, 11-magnetic frame, 12-hexagonal limiting hole, 13-second thread, 14-oil outlet hole. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1-5 This utility model provides a technical solution: a valve cover for a gas safety emission valve, including a valve cover 1, a valve stem connecting pipe 2, a U-shaped strip 3, and a magnetic cover plate 9. The valve cover 1 has multiple positioning holes 4 and multiple flow holes 6 evenly spaced around its upper circumference. The number of flow holes 6 and positioning holes 4 is equal. Each positioning hole 4 has a first thread 5 inside. A threaded hole 7 is located in the center of the upper part of the valve cover 1. A storage groove 8 is located on the annular side of the valve cover 1. A placement groove 10 is located at the bottom of the storage groove 8. A magnetic frame 1 is installed on the upper side of the placement groove 10. 1. The valve stem connecting pipe 2 has a second thread 13 on its annular side. The U-shaped strip 3 has a regular hexagonal cross-section. Multiple positioning holes 4 have multiple oil outlet holes 14 inside. The magnetic cover plate 9 has the opposite magnetic properties to the magnetic square 11. This design solves the problem that the original device had no suitable force application point when rotating and disassembling the valve stem connecting pipe, which made disassembly difficult. Moreover, it required adding lubricating oil to multiple through holes in sequence to lubricate the second threaded hole over a large area, making the process of adding lubricating oil cumbersome and inconvenient.

[0021] As the first embodiment of this utility model: the flow paths of the multiple flow holes 6 are spiral-shaped, and the multiple oil outlet holes 14 are arranged along the flow paths of the multiple flow holes 6. Through the cooperation of the multiple oil outlet holes 14 and the multiple flow holes 6, lubricating oil can flow in along the flow holes 6 and then flow out from the corresponding multiple oil outlet holes 14, providing large-area lubrication for the positioning hole 4. Hexagonal limiting holes 12 are symmetrically provided above the valve stem connecting pipe 2. Through the cooperation of the hexagonal limiting holes 12 and the U-shaped strip 3, the convenience of the operator in disassembling the valve stem connecting pipe 2 is improved. The multiple oil outlet holes 14 are respectively connected to the multiple flow holes 6. The area of ​​the regular hexagonal cross-section of the two hexagonal limiting holes 12 is larger than the area of ​​the regular hexagonal cross-section of the U-shaped strip 3. Through this setting, it is easy for the two vertical ends of the U-shaped strip 3 to be smoothly inserted into the two hexagonal limiting holes 12. The valve cover 1 is made of alloy steel. The valve cover 1 is made of alloy steel because alloy steel valve covers are more suitable for high temperature, high pressure and wear-resistant working conditions.

[0022] As a second embodiment of this utility model: In use, first lift the magnetic cover plate 9 to expose the placement groove 10. Then, the operator takes out the U-shaped strip 3 from the placement groove 10, inserts the two vertical ends of the U-shaped strip 3 into the two hexagonal limiting holes 12, and rotates the U-shaped strip 3 to remove the valve stem connecting pipe 2 that is screwed to the threaded hole 7. When it is necessary to assemble an external valve stem, reset the valve stem connecting pipe 2 and the U-shaped strip 3, then connect the external valve stem to the valve stem connecting pipe 2, and pass the bolt through the valve stem and the positioning hole 4, and tighten the bolt with the first thread 5. When removing the bolts fixed in the positioning hole 4, lubricating oil can be added into the flow hole 6. Under the action of gravity, the lubricating oil will flow along the flow path of the flow hole 6. When the lubricating oil flows to the first oil outlet 14, some of the lubricating oil will flow out from the first oil outlet 14 and then flow into the positioning hole 4. The remaining lubricating oil will continue to flow. When it passes through the remaining oil outlet 14, a portion of it will flow out from the oil outlet 14 and into the positioning hole 4, thereby increasing the lubrication area of ​​the positioning hole 4. Compared with the comparison document, it is not necessary to add lubricating oil to multiple through holes step by step.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A valve cover for a gas safety discharge valve, comprising a valve cover (1), a valve stem connecting pipe (2), a U-shaped strip (3) and a magnetic cover plate (9), characterized in that: The valve cover (1) is provided with a plurality of positioning holes (4) and a plurality of flow holes (6) on the circumference, the number of the plurality of flow holes (6) is equal to that of the plurality of positioning holes (4), the plurality of positioning holes (4) are respectively provided with first threads (5) inside, and the valve cover (1) is provided with a threaded hole (7) in the middle part; The valve cover (1) is provided with a storage groove (8) on the annular side surface, the bottom of the storage groove (8) is provided with a placing groove (10), the magnetic square box (11) is installed on the upper side of the placing groove (10), the valve rod connecting pipe (2) is provided with a second thread (13) on the annular side surface, the U-shaped strip (3) is a regular hexagon in cross section, the plurality of positioning holes (4) are respectively provided with a plurality of oil outlet holes (14) inside, and the magnetism of the magnetic cover plate (9) is opposite to that of the magnetic square box (11).

2. A bonnet for a gas safety vent valve according to claim 1, wherein: The flow paths of the plurality of flow holes (6) are spiral respectively, and the plurality of oil outlet holes (14) are arranged along the flow paths of the plurality of flow holes (6) respectively.

3. A bonnet for a gas safety vent valve according to claim 1 wherein: The valve rod connecting pipe (2) is symmetrically provided with a hexagonal limiting hole (12) above.

4. A bonnet for a gas safety vent valve according to claim 1 wherein: The plurality of oil outlet holes (14) are communicated with the plurality of flow holes (6) respectively.

5. A bonnet for a gas safety vent valve according to claim 3 wherein: The cross-sectional regular hexagonal area of the two hexagonal limiting holes (12) is larger than that of the U-shaped strip (3).

6. A bonnet for a gas safety vent valve according to claim 1 wherein: The material of the valve cover (1) is alloy steel.

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