Stop valve structure for hydrogen energy

Abstract

The utility model discloses a stop valve structure for hydrogen energy, and relates to the field of valve devices. The stop valve structure for hydrogen energy comprises a valve body shell and an improved valve plug, and the improved valve plug comprises a metal valve element, a rubber sealing piece, a process groove and a metal fixing piece. According to the stop valve structure for hydrogen energy, the process groove is formed, the top of the rubber sealing piece is pulled outwards along the process groove, so that an opening in the top of the rubber sealing piece is expanded, at the moment, the metal valve element is conveniently taken out, then a new rubber sealing piece is replaced, and therefore on the premise that the sealing performance is not affected, the sealing performance is greatly improved. The rubber sealing element can be conveniently installed and connected with a larger metal valve element, slippage during use is avoided, meanwhile, the positioning column is movably inserted into the anti-opening positioning groove, the upper end of the rubber sealing element cannot be automatically opened outwards, meanwhile, the arc-shaped anti-sliding element is movably inserted into the annular anti-sliding groove, upward slippage of the metal fixing element is avoided, and assembling is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a stop valve structure usable for hydrogen. Background Art

[0002] The stop valve for hydrogen is a valve that opens and closes vertically. The channels at both ends of the valve body are in a vertical state at the convergence point in the middle. The valve plug slides vertically in the middle and is inserted into the convergence point of the channels. The valve plug is driven up and down to open and close by a screw rod set on the top of the valve body. The key to sealing is that the rubber parts on the valve plug fit tightly with the inner wall of the channel, so the rubber parts play a major role.

[0003] As a material that ages with time, rubber parts need to be replaced regularly within the effective service life of the stop valve. Traditionally, rubber parts on the surface of the valve core are mostly provided with a protrusion at the end of the valve core. The outer diameter of the protrusion is larger than the diameter of the upper end of the valve core rod. At the same time, a matching groove is provided inside the rubber part. The rubber part is assembled by deforming and expanding the rubber part. However, the elastic deformation range of rubber is limited. Exceeding the range will cause irreversible deformation or tearing of the rubber. Therefore, the difference in outer diameter between the protrusion and the valve core rod needs to be controlled within the elastic deformation range of the rubber part. However, this will cause the risk of the rubber part falling off the protrusion surface during use after assembly. At the same time, the purpose of facilitating assembly must be taken into account. For this purpose, a stop valve structure that can be used for hydrogen is provided to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a stop valve structure that can be used for hydrogen, which solves the problem that the rubber seal on the valve core surface of the existing stop valve is inconvenient to assemble and is prone to falling off in the later stage.

[0005] By adopting the above technical solution, a stop valve structure for hydrogen includes a valve body shell and a valve cover installed on the top of the valve body shell, wherein an improved valve plug is arranged inside the valve body shell, and an adjusting screw rod is arranged on the top of the valve cover, and the adjusting screw rod is used to drive the improved valve plug to move up and down;

[0006] The improved valve plug comprises:

[0007] Metal valve core, which is installed at the bottom of the adjusting screw;

[0008] A rubber seal, which is arranged on the outer surface of the metal valve core;

[0009] A process groove is provided on the outer surface of the upper end of the rubber seal, and the process groove makes it convenient to open the top of the rubber seal to assemble the metal valve core;

[0010] A metal fixing part is installed on the top of the rubber seal to limit the opening and closing of the process slot.

[0011] Preferably, an anti-expansion positioning groove is formed on the top of the rubber sealing member, and a positioning column is fixedly welded to the bottom of the metal fixing member, and the positioning column is movably inserted in the anti-expansion positioning groove.

[0012] Preferably, an annular anti-slip groove is formed on the outer wall of the upper end of the rubber seal, and an arcuate anti-slip piece is provided on the inner wall of the metal fixing piece, and the arcuate anti-slip piece is movably inserted in the annular anti-slip groove.

[0013] Preferably, mounting parts are provided on both sides of the metal fixing parts, and the two groups of the metal fixing parts are fixed to each other by installing bolts in the mounting parts.

[0014] Preferably, a valve stem is movably inserted inside the valve cover, the metal valve core is fixedly installed on the bottom end of the valve stem, and the adjusting screw is threadedly connected to the inner top of the valve stem.

[0015] Preferably, a sealing sleeve is provided inside the valve cover, and the valve stem passes through the sealing sleeve.

[0016] Preferably, a bracket is fixedly welded to the top of the valve cover, the top end of the adjusting screw rod is rotatably connected to the inner top of the bracket, and a rotating handle is fixedly installed on the top end of the adjusting screw rod.

[0017] Preferably, a limit strip is provided on the inner side wall of the bracket, a positioning piece is fixedly welded to the outer wall of the top end of the valve stem, and the positioning piece is slidably connected to the outer surface of the limit strip.

[0018] The utility model discloses a stop valve structure for hydrogen, which has the following beneficial effects:

[0019] 1. The stop valve structure that can be used for hydrogen has a process groove, and the top of the rubber seal is bent outward along the process groove to expand the top opening. At this time, it is convenient to take out the metal valve core, and then replace the new rubber seal, so that the entire rubber seal is improved without affecting the sealing performance, so that it can be easily installed and connected with a larger metal valve core to avoid slipping during use.

[0020] The stop valve structure that can be used for hydrogen has a positioning column that is movably inserted in the anti-expansion positioning groove, so that the upper end of the rubber seal will not automatically expand outward. At the same time, the arc-shaped anti-slip part is movably inserted in the inside of the annular anti-slip groove to prevent the metal fixing part from slipping upward, thereby facilitating assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall outer surface structure of the utility model;

[0022] Figure 2This is a cross-sectional view of the overall internal structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the outer surface structure of the valve stem of the utility model;

[0024] Figure 4 This is an exploded view of the external structure of the improved valve plug of the utility model.

[0025] In the figure: 1. valve body shell; 2. valve cover; 3. turning handle; 4. valve stem; 5. improved valve plug; 51. metal valve core; 52. rubber seal; 53. process groove; 54. annular anti-slip groove; 55. anti-spreading positioning groove; 56. metal fixing part; 57. positioning column; 58. arc-shaped anti-slip part; 59. installation part; 6. bracket; 7. limit strip; 8. adjusting screw rod; 9. positioning part; 10. sealing sleeve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The embodiment of the present application provides a stop valve structure that can be used for hydrogen, thereby solving the problem that the rubber seal on the valve core surface of the existing stop valve is inconvenient to assemble and is prone to falling off in the later stage.

[0028] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Embodiment 1

[0030] The utility model embodiment discloses a stop valve structure usable for hydrogen.

[0031] According to the attached Figure 1-4 As shown, it comprises a valve body shell 1 and a valve cover 2 installed on the top of the valve body shell 1, an improved valve plug 5 is arranged inside the valve body shell 1, and an adjusting screw rod 8 is arranged on the top of the valve cover 2, and the adjusting screw rod 8 is used to drive the improved valve plug 5 to move up and down;

[0032] The improved valve plug 5 comprises:

[0033] A metal valve core 51, which is installed at the bottom of the adjusting screw rod 8;

[0034] A rubber seal 52, which is arranged on the outer surface of the metal valve core 51;

[0035] A process groove 53 is provided on the outer surface of the upper end of the rubber seal 52. The process groove 53 allows the top of the rubber seal 52 to be easily opened to assemble the metal valve core 51;

[0036] The metal fixing member 56 is installed on the top of the rubber sealing member 52 to limit the opening and closing of the process slot 53 .

[0037] An anti-expansion positioning groove 55 is formed on the top of the rubber sealing member 52 , and a positioning column 57 is fixedly welded to the bottom of the metal fixing member 56 . The positioning column 57 is movably inserted into the anti-expansion positioning groove 55 .

[0038] An annular anti-slip groove 54 is formed on the outer wall of the upper end of the rubber seal 52 , and an arcuate anti-slip member 58 is provided on the inner wall of the metal fixing member 56 . The arcuate anti-slip member 58 is movably inserted into the annular anti-slip groove 54 .

[0039] Mounting portions 59 are provided on both sides of the metal fixing member 56 , and the two sets of metal fixing members 56 are fixed to each other by installing bolts in the mounting portions 59 .

[0040] A valve stem 4 is movably inserted inside the valve cover 2 , a metal valve core 51 is fixedly installed at the bottom end of the valve stem 4 , and an adjusting screw rod 8 is threadedly connected to the inner top of the valve stem 4 .

[0041] A sealing sleeve 10 is disposed inside the valve cover 2 , and the valve stem 4 passes through the sealing sleeve 10 .

[0042] A bracket 6 is fixedly welded to the top of the valve cover 2, the top of the adjusting screw rod 8 is rotatably connected to the inner top of the bracket 6, and the top of the adjusting screw rod 8 is fixedly installed with a rotating handle 3.

[0043] A limit strip 7 is arranged on the inner side wall of the bracket 6 , and a positioning member 9 is fixedly welded to the outer wall of the top end of the valve stem 4 , and the positioning member 9 is slidably connected to the outer surface of the limit strip 7 .

[0044] Working principle: When the device is in use, the handle 3 is rotated to drive the adjusting screw 8 to rotate, so that the valve stem 4 slides up and down along the limit strip 7, thereby driving the improved valve plug 5 to slide up and down, so as to realize the opening and closing of the valve, and at the same time, the rubber seal 52 on its surface is used for sealing;

[0045] After using it for a period of time, the valve cover 2 is opened and the valve stem 4 and the improved valve plug 5 are removed together. At this time, the bolts of the mounting portion 59 are unscrewed, and the metal fixings 56 are then moved to both sides so that the top of the rubber seal 52 is deformed to a certain extent, so that the arc-shaped anti-slip member 58 is moved out from the inside of the annular anti-slip groove 54, and then the metal fixings 56 are pulled upward to move the positioning column 57 out of the anti-stretching positioning groove 55. At this time, the top of the rubber seal 52 is moved outward along the process groove 53 to expand the top opening. At this time, it is convenient to take out the metal valve core 51, and then replace it with a new rubber seal 52, so that the entire rubber seal 52 can be improved without affecting the sealing performance, so that it can be easily installed and connected with the larger metal valve core 51 to avoid slipping during use and facilitate assembly.

[0046] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0047] 1. By opening a process groove 53 and bending the top of the rubber seal 52 outward along the process groove 53 to expand the top opening, it is convenient to take out the metal valve core 51, and then replace the new rubber seal 52, so as to improve the entire rubber seal 52 without affecting the sealing performance, so that it can be easily installed and connected with the larger metal valve core 51 to avoid slipping during use.

[0048] 2. The positioning column 57 is movably inserted in the anti-expansion positioning groove 55, so that the upper end of the rubber seal 52 will not automatically expand outward. At the same time, the arc-shaped anti-slip member 58 is movably inserted in the inside of the annular anti-slip groove 54 to prevent the metal fixing member 56 from slipping upward, which is convenient for assembly.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0050] The above shows and describes the basic principle and main features of the utility model and the 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 for explaining the principle of 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 claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A stop valve structure for hydrogen, comprising a valve body shell (1) and a valve cover (2) mounted on the top of the valve body shell (1), wherein an improved valve plug (5) is arranged inside the valve body shell (1), and an adjusting screw (8) is arranged on the top of the valve cover (2), wherein the adjusting screw (8) is used to drive the improved valve plug (5) to move up and down; It is characterized in that The improved valve plug (5) comprises: A metal valve core (51) mounted on the bottom of the adjusting screw rod (8); A rubber sealing member (52) is disposed on the outer surface of the metal valve core (51); A process groove (53) is formed on the outer surface of the upper end of the rubber seal (52), and the process groove (53) allows the top end of the rubber seal (52) to be easily opened to assemble the metal valve core (51); A metal fixing member (56) is installed on the top of the rubber sealing member (52) to limit the opening and closing of the process slot (53).

2. A shut-off valve structure for hydrogen energy according to claim 1, Features: An anti-expansion positioning groove (55) is formed on the top of the rubber sealing member (52), and a positioning column (57) is fixedly welded on the bottom of the metal fixing member (56), and the positioning column (57) is movably inserted in the anti-expansion positioning groove (55).

3. A stop valve structure for hydrogen energy according to claim 2, Features: An annular anti-slip groove (54) is provided on the outer wall of the upper end of the rubber seal (52), and an arc-shaped anti-slip piece (58) is provided on the inner wall of the metal fixing piece (56). The arc-shaped anti-slip piece (58) is movably inserted into the annular anti-slip groove (54).

4. A shut-off valve structure for hydrogen energy according to claim 2, Features: Mounting parts (59) are provided on both sides of the metal fixing parts (56), and two groups of the metal fixing parts (56) are fixed to each other by installing bolts in the mounting parts (59).

5. A shut-off valve structure for hydrogen according to claim 1, Features: The valve cover (2) is internally movably connected with a valve stem (4), the metal valve core (51) is fixedly mounted on the bottom end of the valve stem (4), and the adjusting screw (8) is threadedly connected to the inner top of the valve stem (4).

6. A shut-off valve structure for hydrogen energy according to claim 5, Features: A sealing sleeve (10) is arranged inside the valve cover (2), and the valve stem (4) passes through the sealing sleeve (10).

7. A shut-off valve structure for hydrogen energy according to claim 5, Features: A bracket (6) is fixedly welded to the top of the valve cover (2), the top of the adjusting screw rod (8) is rotatably connected to the inner top of the bracket (6), and a rotating handle (3) is fixedly installed on the top of the adjusting screw rod (8).

8. A shut-off valve structure for hydrogen according to claim 7, Features: A limit strip (7) is provided on the inner side wall of the bracket (6), and a positioning piece (9) is fixedly welded to the outer wall of the top end of the valve stem (4), and the positioning piece (9) is slidably connected to the outer surface of the limit strip (7).

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