Valve cover of gas self-closing valve

Abstract

The utility model discloses a valve cover of a gas self-closing valve, which comprises a cover body, a fixed block communicated with the cover body and horizontally extending out of the cover body, and a guide sleeve arranged in the fixed block, one side of the guide sleeve is provided with a first convex ring, the other side of the guide sleeve is provided with a second convex ring, the first convex ring is abutted against the cover body, and the second convex ring is abutted against the cover body. The second protruding ring abuts against the extending end of the fixing block so as to achieve the purpose of installing, fixing and limiting the guide sleeve. The edge of the second protruding ring protrudes out of the outer side wall of the fixing block, and the end face of the protruding end forms a positioning face for limiting movement of the lifting button. According to the utility model, the fixed block is arranged on the cover body, the guide sleeve is arranged in the fixed block, and the two convex rings arranged on the guide sleeve are simultaneously and respectively propped against and limited on the cover body and the fixed block, so that not only is the installation and the limiting convenient, but also the installation stability is improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of self-closing valve processing, in particular to a valve cover of gas self-closing valve. BACKGROUND

[0002] The pipeline gas self-closing valve is a device installed on the pipeline of low-pressure gas system, which can be automatically closed without electricity or other external power when the pipeline gas pressure is under pressure or over pressure, and must be manually opened, and is suitable for pipeline natural gas, liquefied petroleum gas and artificial gas.

[0003] In the existing gas safety valve, the installation structure of the valve cover is usually directly screwed with the knob, and the screw connection is manually operated, and the processing error of each component also affects the screw connection, so that the screw connection is loose, and the length distance between the knob and the valve cover changes during use, which directly affects the opening and closing efficiency of the self-closing valve. UTILITY MODEL CONTENTS

[0004] In view of the above technical problems of the prior art, the utility model solves the technical problems, provides a valve cover of gas self-closing valve which is convenient for quick assembly and can improve the fixing and limiting stability.

[0005] To solve the above technical problems, one technical scheme of the utility model is to provide a valve cover of gas self-closing valve, which comprises a cover body, a fixing block arranged in communication with the cover body and horizontally extending out of the cover body, and a guide sleeve arranged in the fixing block, one side of the guide sleeve is provided with a first protruding ring, the other side is provided with a second protruding ring, the first protruding ring abuts against the cover body, and the second protruding ring abuts against the extending end of the fixing block, so as to realize the installation and fixing limiting purpose of the guide sleeve; the edge of the second protruding ring protrudes out of the outer wall of the fixing block, and the end face of the protruding end forms a positioning surface for limiting the movement of the knob.

[0006] With the above structure, the guide sleeve is press-fitted in the fixed block, at the same time, the first protruding ring abuts against the cover body and the second protruding ring abuts against the protruding end of the fixed block, thereby directly achieving the purpose of press-fitting the guide sleeve on the cover body and fixing the position limit, and then the valve stem connected with the knob is threaded through the guide sleeve, thereby finally achieving the sliding connection form of the knob and the valve cover; at the same time, the protruding end of the second protruding ring abuts against the limiting structure arranged on the inner side wall of the knob, thereby achieving the use limit of the knob, preventing the knob from falling off, and improving the installation stability; at the same time, the installation of the guide sleeve adopts the press-fitting form, the installation state can be directly checked by observing the abutting state of the two protruding rings, thereby directly avoiding the unstable installation caused by manual screwing, and the structure is simple and compact, and the installation is convenient.

[0007] In order to facilitate installation, preferably, an installation hole is arranged on the cover body at a position corresponding to the fixed block, and a placement hole is arranged on the fixed block at a position corresponding to the installation hole, and the installation hole and the placement hole are arranged in communication.

[0008] In order to simplify the structure and facilitate processing, preferably, the diameter of the placement hole is smaller than the diameter of the installation hole, and the placement hole forms a stepped surface around the hole opening position of the installation hole corresponding to the hole opening end surface of the position where the fixed block is connected with the cover body.

[0009] In order to simplify the structure and facilitate processing, preferably, a transition inclined surface is arranged around the hole opening position of the placement hole in the circumferential direction of the hole opening of the protruding end of the fixed block.

[0010] In order to simplify the structure and facilitate processing, preferably, a first protruding ring is arranged around the circumferential direction of the cross section of one side of the guide sleeve, and a second protruding ring is arranged around the circumferential direction of the other side of the guide sleeve; when the guide sleeve is placed in the placement hole, the inner side wall of the first protruding ring abuts against the stepped surface, at the same time, the inner side wall of the second protruding ring abuts against the end surface of the protruding end of the fixed block, and the outer side wall of the guide sleeve is matched with the inner side wall of the placement hole.

[0011] In order to facilitate installation, preferably, a let-in inclined surface is arranged on the outer side wall of the first protruding ring, a let-in through slot is arranged on one side of the guide sleeve corresponding to the first protruding ring, and an opening is arranged in communication on the first protruding ring corresponding to the position of the let-in through slot.

[0012] In order to facilitate processing and ensure the concentricity of product processing, preferably, the cover body and the fixed block are integrally processed.

[0013] In order to facilitate installation and simplify the structure, preferably, an inner recess structure in communication with the installation hole is arranged on one side of the cover body, and a connecting boss connected with the valve seat is arranged around the recess position of the inner recess structure.

[0014] In order to avoid installation interference, as preferred, an installation slope is arranged on the outer side wall of the cover body corresponding to the position between the connecting boss and the fixing block along the circumferential direction of the cover body.

[0015] In order to facilitate processing and forming, as preferred, the guide sleeve, the first convex ring and the second convex ring are integrally processed and manufactured

[0016] Beneficial effects: the utility model discloses a fixing block is arranged on the cover body, and a guide sleeve is arranged in the fixing block, and then two convex rings arranged on the guide sleeve are abutted and limited on the cover body and the fixing block simultaneously and respectively, which not only facilitates installation and limiting, but also improves installation stability and reduces production cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0018] Fig. 1 It is the installation structure diagram of the utility model.

[0019] Fig. 2 It is the structure schematic view of the cover body.

[0020] Fig. 3 It is the structure schematic view of the guide sleeve.

[0021] The meanings of various reference numerals in the drawings are as follows:

[0022] Cover body-1;Mounting hole-10;Step surface-11;Connecting boss-12;Installation slope-13;

[0023] Fixing block-2;Placement hole-20;Transition slope-21;

[0024] Guide sleeve-3;Let position slope-30;First convex ring-31;Second convex ring-32;Let position through slot-33;Opening-34. DETAILED DESCRIPTION

[0025] As shown in Figs. 1 to 3 The utility model discloses a cover body 1, with the cover body 1 integral intercommunication arrangement and the horizontal extension cover body 1's fixing block 2 and setting in the guide sleeve 3 of fixing block 2, the guide sleeve 3 one side is equipped with the first convex ring 31, the other side is equipped with the second convex ring 32, the first convex ring 31 and cover body 1 abut, and this second convex ring 32 and the extension end of fixing block 2 abut, to realize the purpose of guide sleeve 3 installation fixed limiting;The edge of second convex ring 32 protrudes the outer side wall of fixing block 2, and the end face of the protruding end forms the positioning surface that limiting knob (not marked) moves.

[0026] Specifically, an mounting hole 10 is provided on the cover 1 at the position corresponding to the fixing block 2, and a placement hole 20 is provided on the fixing block 2 at the position corresponding to the mounting hole 10. The mounting hole 10 and the placement hole 20 are connected. The diameter of the placement hole 20 is smaller than the diameter of the mounting hole 10. The end face of the placement hole 20 at the connection position between the fixing block 2 and the cover 1 forms a stepped surface 11 that winds around the circumference of the hole at the corresponding end of the mounting hole 10. A transition slope 21 is provided at the protruding end of the fixing block 2 at the position corresponding to the hole of the placement hole 20 that winds around the circumference of the hole.

[0027] A first convex ring 31 is wound around one side of the guide sleeve 3 along the circumferential direction of its cross-section, and a second convex ring 32 is wound around the other side of the guide sleeve 3 along the circumferential direction of its cross-section. The guide sleeve 3, the first convex ring 31, and the second convex ring 32 are all integrally machined. When the guide sleeve 3 is placed into the placement hole 20, the inner sidewall of the first convex ring 31 abuts against the stepped surface 11, and the inner sidewall of the second convex ring 32 abuts against the end face of the protruding end of the fixing block 2. The outer sidewall of the guide sleeve 3 fits snugly against the inner sidewall of the placement hole 20. A clearance slope 30 is provided on the outer sidewall of the first convex ring 31, and a clearance through groove 33 is provided on the guide sleeve 3 on the side corresponding to the first convex ring 31. An opening 34 is provided on the first convex ring 31 at the position corresponding to the clearance through groove 33.

[0028] A recessed structure communicating with the mounting hole 10 is provided on one side of the cover body 1. A connecting boss 12 connected to the valve seat is provided around the recess of the recessed structure. On the outer wall of the cover body 1, at the position between the connecting boss 12 and the fixing block 2, a mounting inclined surface 13 is provided around the circumference of the cover body 1.

[0029] The working principle of this utility model is as follows:

[0030] like Figs. 1 to 3 As shown, firstly, the cover 1 and the fixing block 2 are integrally manufactured. On one side of the cover 1, there is a concave structure communicating with the mounting hole 10. At the concave position of the concave structure, there is a connecting boss 12 that is connected to the valve seat. In addition, on the outer wall of the cover 1, at the position corresponding to the connecting boss 12 and the fixing block 2, there is a mounting inclined surface 13 along the circumference of the cover 1.

[0031] Meanwhile, the guide sleeve 3 is made of nylon 66 material, the first convex ring 31 and the second convex ring 32 are integrally formed on the guide sleeve 3, thereby reducing the production material and processing cost; the relief inclined surface 30 is formed on the outer side wall of the second convex ring 32, two symmetric relief through grooves 33 are formed on one side of the guide sleeve 3 corresponding to the second convex ring 32, and the openings 34 are formed on the second convex ring 32 corresponding to the positions of the relief through grooves 33, thereby forming the pressure deformation structure in the form of a clamping container.

[0032] Then, when the guide sleeve 3 is pressed, the first convex ring 31 first extends into the placement hole 20, and the relief inclined surface 30 abuts against the transition inclined surface 21, the guide sleeve 3 is continuously pushed, the relief inclined surface 30 continuously moves along the inclined surface direction of the transition inclined surface 21, the guide sleeve 3 is compressed on one side corresponding to the first convex ring 31, and continuously extends into the placement hole 20, thereby driving the guide sleeve 3 to continuously enter the placement hole 20; when the first convex ring 31 moves out of the placement hole 20, the first convex ring 31 is no longer extruded by the hole wall of the placement hole 20, and is rebounded and expanded under the elastic force of the nylon 66 material, and the inner side wall of the first convex ring 31 abuts against the step surface 11, meanwhile, the second convex ring 32 abuts against the end surface of the extending end of the fixed block 2, thereby achieving the purpose of pressing the guide sleeve 3 into place in the abutting state of the two convex rings; and the outer side wall of the guide sleeve 3 abuts against the inner side wall of the placement hole 20, thereby avoiding the displacement of the guide sleeve 3 in the longitudinal direction of the installation direction, and affecting the movement of the valve rod (not marked).

[0033] Finally, the valve rod is inserted into the placement hole 20 and passes through the guide sleeve 3 to complete the assembly and use.

[0034] During the entire installation process, the guide sleeve 3 is moved into place to achieve fixed limiting, without the operation of secondary connection and installation, thereby simplifying the installation structure, saving the production cost by using nylon material for processing, achieving the installation stability by manual pressing force during the above installation process, and ensuring the stability of the installation and limiting, quickly checking the position of the two convex rings, preventing the installation from being out of place and flowing, reducing the labor intensity, and improving the installation stability.

[0035] It should be noted that, since the edge of the second convex ring 32 protrudes from the outer side wall of the fixed block 2, a limiting structure is correspondingly arranged on the knob along the moving direction, so as to abut against the end surface of the protruding end, thereby forming the limiting position of the knob movement; the limiting structure is adaptively arranged, so as to meet the installation requirements, and is not within the protection scope of the embodiment, and thus is not described herein.

[0036] The inner recess structure which is communicated with the mounting hole 10 is arranged on one side of the cover 1, which facilitates the installation and movement of the gasket connected with the valve rod; the cover 1 with the guide sleeve 3 is pressed and assembled with the valve rod and other components, and then connected and installed with the valve seat (not indicated) through the connecting boss 12, and meanwhile, the installation slope 13 is processed to avoid installation interference. The two installation structure forms are the same as the prior art, and will not be described here again.

[0037] The specific embodiments described herein are merely illustrative of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the content recorded in the description of the present application or exceed the scope defined by the appended claims.

Claims

1. A bonnet for a gas shut-off valve, characterized by: The utility model relates to a valve cover, including cover (1), with cover (1) communication arrangement and horizontal extension cover (1) fixed block (2) and set up in fixed block (2) guide sleeve (3), one side of guide sleeve (3) is equipped with first convex ring (31), the other side is equipped with second convex ring (32), first convex ring (31) with cover (1) abut, this second convex ring (32) with fixed block (2) extension end abut, to realize guide sleeve (3) installation fixed limit purpose, the edge of second convex ring (32) protrude fixed block (2) outside wall, and the end face of protruding end forms the positioning surface of limit knob movement.

2. A bonnet for a gas shut-off valve as defined in claim 1, wherein: The utility model relates to a valve cover, including cover (1), with cover (1) communication arrangement and horizontal extension cover (1) fixed block (2) and set up in fixed block (2) guide sleeve (3), one side of guide sleeve (3) is equipped with first convex ring (31), the other side is equipped with second convex ring (32), first convex ring (31) with cover (1) abut, this second convex ring (32) with fixed block (2) extension end abut, to realize guide sleeve (3) installation fixed limit purpose, the edge of second convex ring (32) protrude fixed block (2) outside wall, and the end face of protruding end forms the positioning surface of limit knob movement.

3. A bonnet for a gas shut-off valve as defined in claim 2 wherein: The utility model relates to a valve cover, including cover (1), with cover (1) communication arrangement and horizontal extension cover (1) fixed block (2) and set up in fixed block (2) guide sleeve (3), one side of guide sleeve (3) is equipped with first convex ring (31), the other side is equipped with second convex ring (32), first convex ring (31) with cover (1) abut, this second convex ring (32) with fixed block (2) extension end abut, to realize guide sleeve (3) installation fixed limit purpose, the edge of second convex ring (32) protrude fixed block (2) outside wall, and the end face of protruding end forms the positioning surface of limit knob movement.

4. A bonnet for a gas shut-off valve as defined in claim 3 wherein: The utility model relates to a valve cover, including cover (1), with cover (1) communication arrangement and horizontal extension cover (1) fixed block (2) and set up in fixed block (2) guide sleeve (3), one side of guide sleeve (3) is equipped with first convex ring (31), the other side is equipped with second convex ring (32), first convex ring (31) with cover (1) abut, this second convex ring (32) with fixed block (2) extension end abut, to realize guide sleeve (3) installation fixed limit purpose, the edge of second convex ring (32) protrude fixed block (2) outside wall, and the end face of protruding end forms the positioning surface of limit knob movement.

5. A bonnet for a gas shut-off valve as defined in claim 4 wherein: The utility model relates to a valve cover, including cover (1), with cover (1) communication arrangement and horizontal extension cover (1) fixed block (2) and set up in fixed block (2) guide sleeve (3), one side of guide sleeve (3) is equipped with first convex ring (31), the other side is equipped with second convex ring (32), first convex ring (31) with cover (1) abut, this second convex ring (32) with fixed block (2) extension end abut, to realize guide sleeve (3) installation fixed limit purpose, the edge of second convex ring (32) protrude fixed block (2) outside wall, and the end face of protruding end forms the positioning surface of limit knob movement.

6. A bonnet for a gas shut-off valve as defined in claim 5 wherein: The utility model relates to a valve cover, including cover (1), with cover (1) communication arrangement and horizontal extension cover (1) fixed block (2) and set up in fixed block (2) guide sleeve (3), one side of guide sleeve (3) is equipped with first convex ring (31), the other side is equipped with second convex ring (32), first convex ring (31) with cover (1) abut, this second convex ring (32) with fixed block (2) extension end abut, to realize guide sleeve (3) installation fixed limit purpose, the edge of second convex ring (32) protrude fixed block (2) outside wall, and the end face of protruding end forms the positioning surface of limit knob movement.

7. A bonnet for a gas shut-off valve as defined in claim 4 wherein: The utility model relates to a valve cover, including cover (1), with cover (1) communication arrangement and horizontal extension cover (1) fixed block (2) and set up in fixed block (2) guide sleeve (3), one side of guide sleeve (3) is equipped with first convex ring (31), the other side is equipped with second convex ring (32), first convex ring (31) with cover (1) abut, this second convex ring (32) with fixed block (2) extension end abut, to realize guide sleeve (3) installation fixed limit purpose, the edge of second convex ring (32) protrude fixed block (2) outside wall, and the end face of protruding end forms the positioning surface of limit knob movement.

8. A bonnet for a gas shut-off valve as defined in claim 1, wherein: ​ 9. A bonnet for a gas shut-off valve as defined in claim 8 wherein: ​ 10. A bonnet for a gas shut-off valve as defined in claim 4 wherein: ​

Images