High-pressure oxygen lengthened stop valve

Abstract

The utility model relates to a high-pressure oxygen lengthened stop valve. A valve cover is fixed above a valve body through a bolt; a valve rod is arranged in a cavity formed by the valve body and the valve cover; according to the high-pressure oxygen lengthened stop valve, the replaceable valve clack is movably connected to one end of the valve rod, the valve clack of the high-pressure oxygen lengthened stop valve can be independently replaced, and the problem that in an existing high-pressure oxygen using scene, under the action of high-pressure oxygen, the valve clack of a used stop valve is often oxidized by oxygen, and the valve clack cannot be replaced independently is solved. The technical problems that due to the fact that a valve clack is of an integrated structure, the valve clack is damaged, the whole valve is scrapped, and due to the fact that a high-pressure oxygen stop valve is high in price, the price for replacing the whole valve is high are solved.

Description

Technical Field

[0001] The embodiment of the utility model relates to a stop valve, in particular to a high-pressure oxygen lengthened stop valve. Background Art

[0002] In the existing high-pressure oxygen usage scenarios, the stop valve used is often oxidized by oxygen due to the action of high-pressure oxygen. Since the valve flap is an integrated structure, the valve flap is damaged, resulting in the entire valve being scrapped. Since the high-pressure oxygen stop valve is expensive, the price of replacing the entire set of valves is relatively high. Utility Model Content

[0003] The purpose of the embodiments of the utility model is to provide a high-pressure oxygen lengthened stop valve whose valve disc can be replaced separately.

[0004] In order to achieve the above-mentioned purpose, the embodiment of the utility model designs a high-pressure oxygen lengthened stop valve, comprising:

[0005] Valve body;

[0006] a valve cover, the valve cover being fixed above the valve body by bolts;

[0007] A valve stem, which is arranged in the cavity formed by the valve body and the valve cover;

[0008] A replaceable valve flap is movably connected to one end of the valve stem.

[0009] Furthermore, in the high-pressure oxygen extended stop valve of the utility model, the replaceable valve flap further includes:

[0010] A valve disc, wherein the bottom end of the valve stem is inserted into the central hole of the valve disc;

[0011] The valve stem is inserted into the valve flap cover, the valve flap cover is threadedly connected to the valve flap, the valve stem is inserted between the valve flap and the valve flap cover, and the valve stem rotates between the valve flap and the valve flap cover.

[0012] Furthermore, in the high-pressure oxygen extended stop valve of the utility model, a through hole is respectively opened at both ends of the valve body; a vertical hole is arranged from top to bottom between the through holes, and the replaceable valve flap is hard-sealed with the vertical hole.

[0013] Furthermore, in the high-pressure oxygen extended stop valve of the utility model, the hard seal further comprises:

[0014] A sealing ring groove is provided on the vertical hole;

[0015] A sealing ring, which is circularly arranged on the valve disc of the replaceable valve disc;

[0016] The sealing ring and the sealing ring groove are hard-sealed.

[0017] Furthermore, in the high-pressure oxygen extended stop valve of the utility model, the gasket is placed between the valve body and the valve cover.

[0018] Furthermore, in the high-pressure oxygen lengthened stop valve of the utility model, the stuffing box is provided on the valve cover, and a stuffing is placed between the stuffing box and the valve stem;

[0019] A packing gland is filled on the valve stem above the packing; the packing gland presses the packing;

[0020] A packing pressing plate is fixed above the packing pressing sleeve with studs and nuts, and the packing pressing plate presses the packing pressing sleeve.

[0021] Furthermore, in the high-pressure oxygen extended stop valve of the utility model, a bracket is welded on the valve cover, the valve stem passes through the center of the bracket, a guide block is threadedly connected to the valve stem, both sides of the guide block are clamped on the slide rails on the inner side of the bracket, and the guide block moves up and down along the slide rails; an end cover is fixed on the front and rear sides of the bracket with screws.

[0022] Furthermore, in the high-pressure oxygen extended stop valve of the utility model, a stem nut is screwed into the valve stem above the bracket; and a bearing gland is arranged on the bracket above the stem nut.

[0023] Furthermore, in the high-pressure oxygen extended stop valve of the utility model, a hand wheel is inserted into the valve stem above the bearing gland and locked with a locking nut, and a set screw is used to fix the side of the locking nut, and a protective cover is connected with an internal thread above the locking nut.

[0024] Furthermore, in the high-pressure oxygen extended stop valve of the utility model, the material of the high-pressure oxygen extended stop valve is ASTM A series stainless steel material.

[0025] Compared with the prior art, the implementation method of the utility model adopts bolts to fix the valve cover above the valve body; a valve stem is arranged in the cavity formed by the valve body and the valve cover; a replaceable valve disc is movably connected to one end of the valve stem, thereby realizing a high-pressure oxygen extended stop valve with a valve disc that can be replaced separately, and solving the technical problem that in the existing high-pressure oxygen use scenario, the stop valve used is often oxidized by oxygen under the action of high-pressure oxygen, and the valve disc is an integrated structure, which leads to damage of the valve disc, thereby causing the entire valve to be scrapped, and the high-pressure oxygen stop valve is expensive, so the price of replacing the entire valve is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0028] The embodiment of the utility model relates to a high-pressure oxygen lengthened stop valve, such as Figure 1 As shown, including:

[0029] The valve body 1 in this embodiment serves as the base of the high-pressure oxygen lengthened stop valve in this embodiment;

[0030] A valve cover 6 is fixed on the valve body 1 by means of bolts; the valve cover 6 and the valve body 1 constitute the main structure of the high-pressure oxygen lengthened stop valve in this embodiment.

[0031] A valve stem 3 is arranged in a cavity formed by the valve body 1 and the valve cover 6; the valve stem 3 moves up and down in the cavity formed by the valve body 1 and the valve cover 6 of the high-pressure oxygen extended stop valve in this embodiment.

[0032] A replaceable valve flap 30 is movably connected to one end of the valve stem 3. The replaceable valve flap 30 is movably connected to one end of the valve stem 3, so that the valve stem 3 drives the replaceable valve flap 30 to move up and down, thereby realizing the opening and closing of the high-pressure oxygen extended stop valve in this embodiment. The stop valve used in the existing high-pressure oxygen use scenario is solved. Because the valve flap of the stop valve is often oxidized by oxygen under the action of high-pressure oxygen, the valve flap is an integrated structure, which causes the valve flap to be damaged, thereby causing the entire valve to be scrapped. Since the high-pressure oxygen stop valve is expensive, the price of replacing the entire set of valves is high.

[0033] In order to achieve the above technical effects, the high-pressure oxygen stop valve in this embodiment is extended, such as Figure 1 As shown, the replaceable valve flap 30 also includes:

[0034] The bottom end of the valve stem 3 is inserted into the central hole 31 of the valve disc 2; the valve disc 2 is arranged at the top end of the valve stem 3;

[0035] The valve stem 3 is inserted into the valve flap cover 4, the valve flap cover 4 is threadedly connected with the valve flap 2, the valve stem 3 is inserted between the valve flap 2 and the valve flap cover 4, and the valve stem 3 rotates between the valve flap 2 and the valve flap cover 4. After the valve flap cover 4 is connected, the valve stem 3 rotates between the valve flap 2 and the valve flap cover 4, so that the valve flap 2 will not be affected during the rotation of the valve stem 3, and thus rotates along with it.

[0036] In order to achieve the above technical effects, the high-pressure oxygen stop valve in this embodiment is extended, such as Figure 1 As shown, a through hole 11 is respectively provided at both ends of the valve body 1 ; a vertical hole 111 is provided from top to bottom between the through holes 11 , and the replaceable valve flap 30 is hard-sealed with the vertical hole 111 .

[0037] In order to achieve the above technical effects, the high-pressure oxygen stop valve in this embodiment is extended, such as Figure 1 As shown, the hard seal also includes:

[0038] A sealing ring groove 112 is provided on the vertical hole 111;

[0039] A sealing ring 113 is circularly arranged on the valve flap 2 of the replaceable valve flap 30;

[0040] The sealing ring 112 and the sealing ring groove 113 are hard-sealed. The hard seal formed by the sealing ring groove 112 and the sealing ring 113 can be well sealed in an oxygen environment.

[0041] In order to achieve the above technical effects, the high-pressure oxygen stop valve in this embodiment is extended, such as Figure 1 As shown, a gasket 5 is placed between the valve body 1 and the valve cover 6. The gasket 5 is used for sealing between the valve body 1 and the valve cover 6.

[0042] In order to achieve the above technical effects, the high-pressure oxygen stop valve in this embodiment is extended, such as Figure 1 As shown, a stuffing box 23 is provided on the valve cover 6, and a stuffing box 7 is placed between the stuffing box 23 and the valve stem 3;

[0043] Above the packing 7, a packing gland 8 is filled on the valve stem 3; the packing gland 8 presses the packing 7;

[0044] A packing pressing plate 9 is fixed above the packing pressing sleeve 8 by means of studs 10 and nuts, and the packing pressing plate 9 presses the packing pressing sleeve 8. The above structure constitutes the packing structure of the high-pressure oxygen lengthened stop valve in this embodiment.

[0045] In order to achieve the above technical effects, the high-pressure oxygen stop valve in this embodiment is extended, such as Figure 1 As shown, a bracket 19 is welded on the valve cover 6, the valve stem 3 passes through the center of the bracket 19, and the guide block 12 is threadedly connected to the valve stem 3. Both sides of the guide block 12 are clamped on the slide rail 121 on the inner side of the bracket 19, and the guide block 12 moves up and down along the slide rail 121; an end cover 20 is fixed on the front and rear sides of the bracket 19 with screws.

[0046] In order to achieve the above technical effects, the high-pressure oxygen stop valve in this embodiment is extended, such as Figure 1 As shown, a stem nut 13 is screwed into the valve stem 3 above the bracket 19; a bearing gland 14 is arranged on the bracket 19 above the stem nut 13. When the valve stem 3 rotates, the replacement valve disc 30 is driven to move up and down through the stem nut 13.

[0047] In order to achieve the above technical effects, the high-pressure oxygen stop valve in this embodiment is extended, such as Figure 1 As shown, above the bearing gland 14, a hand wheel 15 is inserted into the valve stem 3 and locked with a locking nut 16, and fixed with a set screw 17 on the side of the locking nut 16. Above the locking nut 16, a protective cover 18 is internally threaded. The locking nut 16 and the set screw 17 are used to fix the hand wheel 15.

[0048] In order to achieve the above technical effects, the high-pressure oxygen stop valve in this embodiment is extended, such as Figure 1 As shown, the material of the high-pressure oxygen extended stop valve in this embodiment is ASTM A series stainless steel material. ASTM A series stainless steel material has good corrosion resistance in high-pressure oxygen.

[0049] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A high-pressure oxygen extended stop valve, characterized in that: include: Valve body; a valve cover, the valve cover being fixed above the valve body by bolts; A valve stem, which is arranged in the cavity formed by the valve body and the valve cover; A replaceable valve flap is movably connected to one end of the valve stem; The replaceable valve flap further comprises: A valve disc, wherein the bottom end of the valve stem is inserted into the central hole of the valve disc; The valve stem is inserted into the valve flap cover, the valve flap cover is threadedly connected to the valve flap, the valve stem is inserted between the valve flap and the valve flap cover, and the valve stem rotates between the valve flap and the valve flap cover.

2. The high-pressure oxygen extended stop valve according to claim 1, characterized in that: A through hole is respectively provided at both ends of the valve body; a vertical hole is provided from top to bottom between the through holes, and the replaceable valve flap is hard-sealed with the vertical hole.

3. The high-pressure oxygen extended stop valve according to claim 2, characterized in that: The hard seal further comprises: A sealing ring groove is provided on the vertical hole; A sealing ring, which is circularly arranged on the valve disc of the replaceable valve disc; The sealing ring and the sealing ring groove are hard-sealed.

4. The high-pressure oxygen extended stop valve according to claim 1, characterized in that: A gasket is placed between the valve body and the valve cover.

5. The high-pressure oxygen extended stop valve according to claim 1, characterized in that: A stuffing box is arranged on the valve cover, and a stuffing is placed between the stuffing box and the valve stem; A packing gland is filled on the valve stem above the packing; the packing gland presses the packing; A packing pressing plate is fixed above the packing pressing sleeve with studs and nuts, and the packing pressing plate presses the packing pressing sleeve.

6. The high-pressure oxygen extended stop valve according to claim 5, characterized in that: A bracket is welded on the valve cover, the valve stem passes through the center of the bracket, a guide block is threadedly connected to the valve stem, both sides of the guide block are clamped on the slide rails inside the bracket, and the guide block moves up and down along the slide rails; an end cover is fixed on the front and rear sides of the bracket with screws.

7. The high-pressure oxygen extended stop valve according to claim 6, characterized in that: A valve stem nut is screwed into the valve stem above the bracket; and a bearing gland is arranged on the bracket above the valve stem nut.

8. The high-pressure oxygen extended stop valve according to claim 7, characterized in that: A hand wheel is sleeved on the valve stem above the bearing gland and is locked with a locking nut, and is fixed with a set screw on the side of the locking nut. A protective cover is connected with an internal thread above the locking nut.

9. The high-pressure oxygen extended stop valve according to any one of claims 1 to 8, characterized in that: The material of the high-pressure oxygen extended stop valve is ASTM A series stainless steel material.

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