Valve bonnet structure with self-locking mechanism

Abstract

The utility model relates to the technical field of bonnet structures, in particular to a bonnet structure with a self-locking mechanism, the bonnet structure with the self-locking mechanism comprises a bonnet main body and a bonnet, the bonnet is arranged at the bottom end of the inner side of the bonnet main body, and a valve rod is arranged in the bonnet in a penetrating manner; the valve bonnet structure with the self-locking mechanism has the advantages that due to the fact that the locking toothed plate is elastically connected with the movable groove through the supporting spring, the locking toothed plate can be moved into the movable groove by pushing the push rod in the direction of the movable groove, and at the moment, the valve rod can be rotated by rotating the valve bonnet body; when the locking toothed plate is loosened, the locking toothed plate can reset under the action of the supporting spring and is clamped with the gear ring, so that self-locking operation on the valve bonnet body can be achieved, abnormal operation such as mistaken opening, mistaken closing or mistaken touch in the using process of the valve can be effectively prevented, and the using safety and stability of the valve are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve cap structures, in particular to a valve cap structure with a self-locking mechanism. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems and have functions such as shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief.

[0003] Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves, chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, duplex steel valves, plastic valves, non-standard customized valves, etc. according to their materials.

[0004] A valve is generally composed of a valve body, a valve core, a valve stem and a valve bonnet, among which the valve bonnet is a key component of valve accessories, and has important functions such as sealing and fixing. The valve bonnet and the valve stem are clamped together by a cross-shaped groove and a cross-shaped embedded part, so that during operation, the valve stem and valve core can be rotated by rotating the valve bonnet, so that the flow rate can be controlled by the opening between the valve core and the valve seat. However, if abnormal operations such as accidental opening, accidental closing or accidental collision occur during use, the safety and stability of the valve will be easily reduced. Utility Model Content

[0005] The purpose of the utility model is to provide a valve cap structure with a self-locking mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve bonnet structure with a self-locking mechanism, the valve bonnet structure with a self-locking mechanism comprising: a valve bonnet body and a valve cover, a valve cover is arranged at the bottom end of the inner side of the valve bonnet body, a valve stem is penetrated inside the valve cover, a cross-shaped embedded portion is arranged at one end of the valve stem, and a cross-shaped groove is opened at one end of the valve bonnet body close to the valve stem.

[0007] Preferably, a self-locking mechanism connected to the valve cap body is provided on one side of the valve cover, and the self-locking mechanism consists of a movable groove, a support spring, a locking tooth plate, a gear ring and a push rod.

[0008] Preferably, a movable groove is opened on one side of the valve cover, a symmetrically arranged support spring is welded inside the movable groove, a locking tooth plate is welded on one side of the support spring, and a gear ring is welded on one end of the valve cap body close to the locking tooth plate.

[0009] Preferably, a push rod is welded to a side of the locking tooth plate away from the support spring, and the push rod is arranged in an inverted "U"-shaped structure.

[0010] Preferably, a guide groove is symmetrically opened on one side inside the movable groove, a guide rod is symmetrically welded to one side of the locking tooth plate close to the guide groove, and the locking tooth plate and the movable groove form a sliding structure through the guide rod and the guide groove.

[0011] Preferably, both sides of the cross-shaped embedded portion are bonded with clamping blocks by glue, a clamping slot is provided inside the cross-shaped groove, and the cross-shaped embedded portion and the cross-shaped groove form a clamping structure through the clamping slot and the clamping block.

[0012] Preferably, two of the card slots and card blocks are symmetrically arranged about the central axis of the cross-shaped embedding portion, and the card blocks are made of elastic rubber material.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The valve cap structure with a self-locking mechanism proposed in the utility model, since the locking tooth plate and the movable groove are elastically connected by a supporting spring, the locking tooth plate can be moved into the movable groove by pushing the push rod in the direction of the movable groove. At this time, the valve stem can be rotated by rotating the valve cap body. When the locking tooth plate is released, it will be reset and engaged with the gear ring under the action of the supporting spring, so that the self-locking operation of the valve cap body can be realized, so that the valve can be effectively prevented from being opened, closed or touched by mistake during use, thereby improving the safety and stability of the valve.

[0015] 2. The valve bonnet structure with a self-locking mechanism proposed in the utility model, when the valve stem and the valve bonnet body are clamped together through the cross-shaped embedded part and the cross-shaped groove, the cross-shaped embedded part and the cross-shaped groove are clamped together through the clamping groove and the clamping block, thereby achieving the firmness of the connection between the valve stem and the valve bonnet body and preventing the valve bonnet body from falling off and being lost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cutaway structure of the utility model when viewed from above;

[0018] Figure 3 It is a partial front view cutaway enlarged view of the utility model;

[0019] Figure 4 It is a partial side view of the utility model.

[0020] In the figure: 1. valve bonnet body; 2. valve cover; 3. valve stem; 4. cross-shaped embedded part; 5. cross-shaped groove; 6. self-locking mechanism; 601. movable groove; 602. support spring; 603. locking tooth plate; 604. gear ring; 605. push rod; 7. guide rod; 8. guide groove; 9. clamping groove; 10. clamping block. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] See also Figure 1-Figure 4 The utility model provides a technical solution: a valve bonnet structure with a self-locking mechanism, the valve bonnet structure with a self-locking mechanism comprises: a valve bonnet body 1 and a valve cover 2, the valve cover 2 is arranged at the bottom end of the inner side of the valve bonnet body 1, a valve stem 3 is penetrated inside the valve cover 2, a cross-shaped embedded portion 4 is arranged at one end of the valve stem 3, a cross-shaped groove 5 is provided at one end of the valve stem 3 of the valve bonnet body 1, both sides of the cross-shaped embedded portion 4 are bonded with a clamping block 10 by glue, a clamping groove 9 is provided inside the cross-shaped groove 5, the cross-shaped embedded portion 4 and the cross-shaped groove 5 form a clamping structure through the clamping groove 9 and the clamping block 10, the clamping groove 9 and the clamping block 10 are symmetrically arranged about the central axis of the cross-shaped embedded portion 4, and the clamping block 10 is made of elastic rubber material;

[0024] When the valve stem 3 and the valve bonnet body 1 are clamped together through the cross-shaped embedded part 4 and the cross-shaped groove 5, the cross-shaped embedded part 4 and the cross-shaped groove 5 are clamped together through the clamping groove 9 and the clamping block 10, thereby achieving the firmness of the connection between the valve stem 3 and the valve bonnet body 1 and preventing the valve bonnet body 1 from falling off and being lost.

[0025] Embodiment 2

[0026] On the basis of the first embodiment, in order to prevent the valve from being opened, closed or touched by mistake during use, during operation, since the locking tooth plate 603 is elastically connected to the movable groove 601 by the support spring 602, the locking tooth plate 603 can be moved into the movable groove 601 by pushing the push rod 605 in the direction of the movable groove 601. At this time, the valve stem 3 can be rotated by rotating the valve cap body 1. When the locking tooth plate 603 is released, it will be reset under the action of the support spring 602 and engaged with the gear ring 604, so that the self-locking operation of the valve cap body 1 can be realized, so that the valve can be effectively prevented from being opened, closed or touched by mistake during use, thereby improving the safety and stability of the valve.

[0027] A self-locking mechanism 6 connected to the valve cap body 1 is provided on one side of the valve cover 2, and the self-locking mechanism 6 consists of a movable groove 601, a supporting spring 602, a locking tooth plate 603, a gear ring 604 and a push rod 605. A movable groove 601 is opened on one side of the valve cover 2, and the interior of the movable groove 601 is welded with a symmetrically arranged supporting spring 602, and one side of the supporting spring 602 is welded with a locking tooth plate 603, and one end of the valve cap body 1 close to the locking tooth plate 603 is welded with a gear ring 604, and the side of the locking tooth plate 603 away from the supporting spring 602 is welded with a push rod 605, and the push rod 605 is arranged as an inverted "U" shape structure.

[0028] Embodiment 3

[0029] On the basis of the second embodiment, in order to achieve the supporting and limiting effect on the locking tooth plate 603, when in use, the locking tooth plate 603 will slide in the movable groove 601 under the action of the guide rod 7 and the guide groove 8;

[0030] A guide groove 8 is symmetrically opened on one side inside the movable groove 601 , and a guide rod 7 is symmetrically welded to one side of the locking tooth plate 603 close to the guide groove 8 . The locking tooth plate 603 and the movable groove 601 form a sliding structure through the guide rod 7 and the guide groove 8 .

[0031] In actual use, the locking tooth plate 603 can be moved into the movable groove 601 by pushing the push rod 605 in the direction of the movable groove 601. At this time, the valve stem 3 and the valve core can be rotated by rotating the valve cap body 1, so that the flow rate can be controlled by the opening between the valve core and the valve seat. When the locking tooth plate 603 is loosened, it will reset under the action of the support spring 602 and engage with the gear ring 604, thereby realizing the self-locking operation of the valve cap body 1, so that the valve can be effectively prevented from being opened, closed or touched by mistake during use, thereby improving the safety and stability of the valve. The contents not described in detail in this description belong to the existing technology known to professional and technical personnel in this field.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve cap structure with a self-locking mechanism, characterized in that: The valve bonnet structure with a self-locking mechanism comprises: a valve bonnet body (1) and a valve cover (2), wherein the valve cover (2) is arranged at the bottom end of the inner side of the valve bonnet body (1), a valve stem (3) is arranged through the interior of the valve cover (2), a cross-shaped embedding portion (4) is arranged at one end of the valve stem (3), and a cross-shaped groove (5) is arranged at one end of the valve bonnet body (1) close to the valve stem (3).

2. A valve cap structure with a self-locking mechanism according to claim 1, characterized in that: A self-locking mechanism (6) connected to the valve cap body (1) is provided on one side of the valve cover (2), and the self-locking mechanism (6) is composed of a movable groove (601), a support spring (602), a locking tooth plate (603), a gear ring (604) and a push rod (605).

3. A valve cap structure with a self-locking mechanism according to claim 2, characterized in that: A movable groove (601) is provided on one side of the valve cover (2), a symmetrically arranged support spring (602) is welded inside the movable groove (601), a locking tooth plate (603) is welded on one side of the support spring (602), and a gear ring (604) is welded on one end of the valve cap body (1) close to the locking tooth plate (603).

4. A valve cap structure with a self-locking mechanism according to claim 3, characterized in that: A push rod (605) is welded to a side of the locking tooth plate (603) away from the support spring (602), and the push rod (605) is configured as an inverted "U"-shaped structure.

5. The valve cap structure with a self-locking mechanism according to claim 3, characterized in that: A guide groove (8) is symmetrically provided on one side of the movable groove (601); a guide rod (7) is symmetrically welded to the locking tooth plate (603) on one side close to the guide groove (8); and the locking tooth plate (603) and the movable groove (601) form a sliding structure via the guide rod (7) and the guide groove (8).

6. The valve cap structure with a self-locking mechanism according to claim 1, characterized in that: Both sides of the cross-shaped embedded portion (4) are bonded with clamping blocks (10) by glue, a clamping groove (9) is provided inside the cross-shaped groove (5), and the cross-shaped embedded portion (4) and the cross-shaped groove (5) form a clamping structure through the clamping groove (9) and the clamping block (10).

7. A valve cap structure with a self-locking mechanism according to claim 6, characterized in that: The clamping groove (9) and the clamping block (10) are both symmetrically arranged in two with respect to the central axis of the cross-shaped embedding portion (4), and the clamping block (10) is made of elastic rubber material.

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