CN212804516U

CN212804516U - Safety pin for valve of steel cylinder for refrigerant

Info

Publication number: CN212804516U
Application number: CN202021247602.4U
Authority: CN
Inventors: 徐立云; 张剑; 马纵横; 权汉钊
Original assignee: Shanghai Minshi Intelligent Technology Co ltd
Current assignee: Shanghai Minshi Intelligent Technology Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-03-26
Anticipated expiration: 2030-06-30

Abstract

The utility model relates to a refrigerant steel cylinder valve safety round pin, jump ring and holding ring including the integration is connected, the holding ring be closed cyclic annular for the relative position between location safety round pin and the refrigeration steel bottle, the jump ring be the major arc shape for block refrigerant steel cylinder valve neck, the safety round pin be the elastic plastic material, and be plane symmetrical structure. Compared with the prior art, the utility model discloses a spacing to the valve, the later stage automated production of being convenient for carries out the plug safety pin, adopts non-metallic material to make the safety pin simultaneously, has also avoided the functional failure of safety pin, has also reduced manufacturing process's complexity.

Description

Safety pin for valve of steel cylinder for refrigerant

Technical Field

The utility model relates to a safety pin especially relates to a refrigerant steel cylinder valve safety pin.

Background

The valve safety pin is a pin body mainly used for limiting, sealing and safety protection of a refrigerant cylinder valve, an elastic cavity of the valve safety pin clamps the valve tightly to play a role in sealing and safety protection, and the upper positioning block and the lower positioning block limit the degree of freedom and the position of the cylinder valve.

The existing refrigerant steel cylinder valve safety pin has the following defects:

(1) the valve is not up to standard in limiting, manual operation is inconvenient, and an automatic production mode is not easy to realize.

(2) Most of the manufacturing materials are metal, the manufacturing process is complex, the cost is slightly higher, the refrigerant has corrosiveness, and the metal parts can be reduced or lose the expected functions after being corroded.

In view of the above problems, there is a need for an improvement and innovation of the safety pin of the original refrigerant cylinder valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a safety pin for a valve of a refrigerant steel cylinder in order to overcome the defects of poor sealing performance and metal parts in the prior art.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a refrigerant steel cylinder valve safety round pin, jump ring and holding ring including the integration is connected, the holding ring be closed cyclic annular for the relative position between location safety round pin and the refrigeration steel bottle, the jump ring be the major arc shape for block refrigerant steel cylinder valve neck, the safety round pin be the elastic plastic material, and be plane symmetrical structure.

The positioning ring comprises two opposite side walls and a curved wall, the curved wall is connected with one ends of the two side walls, and the other ends of the two side walls are smoothly connected with the clamp springs.

The top and the bottom of the side wall are respectively provided with an upper positioning block and a lower positioning block for up-down bidirectional positioning.

The number of the upper positioning blocks and the number of the lower positioning blocks are two.

The inner walls of the upper positioning block and the lower positioning block are coplanar with the inner wall of the side wall.

The inner side of the curved wall is provided with a triangular supporting block.

And a wedge-shaped cavity is formed between the two side walls.

The wedge-shaped cavity is formed by straight keys on two side walls.

The joint of the straight key and the clamp spring is a sharp corner.

The inner surface and the outer surface of the clamp spring are in smooth transition.

Compared with the prior art, the utility model has the advantages of it is following:

(1) the safety pin is convenient to insert and pull out in the later automatic production by limiting the valve, and meanwhile, the safety pin is made of a non-metal material, so that the functional failure of the safety pin is avoided, and the complexity of the manufacturing process is reduced;

(2) the neck part of the valve is locked through the elastic clamp spring part, and the valve is locked, so that the valve is prevented from being rotated in an accidental situation to a certain extent, and a certain qualified inspection effect is achieved;

(3) the rotation of the valve is limited by two groups of characteristics of the upper positioning block and the lower positioning block, so that the hand is prevented from being rotated unintentionally due to artificial reasons;

(4) the inner surface and the outer surface of the clamp spring are in smooth transition, so that the use safety is improved.

Drawings

FIG. 1 is an isometric view of a shear pin according to this embodiment;

FIG. 2 is a side view of the shear pin of the present embodiment;

FIG. 3 is a top view of the shear pin of the present embodiment;

FIG. 4 is a cross-sectional view of the center plane of the shear pin of this embodiment;

reference numerals:

1. a side wall; 2. a curved wall; 3. a triangular support block; 4. a wedge-shaped cavity; 5. an upper positioning block; 6. a clamp spring main cavity body; 7. the outer wall of the clamp spring; 8. a clamp spring front wall; 9. a middle ring block; 10. a lower positioning block; 11. a direct bond; 12. and a clamp spring.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Examples

Referring to fig. 1-4, the refrigerant cylinder valve safety pin comprises a snap spring and a positioning ring which are integrally connected, wherein the positioning ring is in a closed ring shape and used for positioning the relative position between the safety pin and a refrigeration cylinder, the snap spring 12 is in a preferred arc shape and used for clamping the neck of the refrigerant cylinder valve, and the safety pin is made of elastic plastic and has a plane symmetrical structure.

The holding ring includes two relative lateral walls 1 and a curved wall 2 that sets up, and curved wall 2 is connected with the one end of two lateral walls 1, and the other end and the jump ring 12 smooth connection of two lateral walls 1. The number of the side walls 1 is two, so that the fixing and the installation are convenient; the clamp spring 12 and the curved wall 2 are distributed between the two side walls 1, so that the stress of the structure is uniform; a wedge-shaped cavity 4 is formed between the two side walls 1, and the wedge-shaped cavity 4 is formed by straight keys 11 on the two side walls 1 and is mainly used for increasing the overall elasticity of the structure.

The top and the bottom of the side wall 1 are respectively provided with two upper positioning blocks 5 and two lower positioning blocks 10, and two sides of the two upper positioning blocks and two lower positioning blocks are uniformly distributed along the central plane of the safety pin structure respectively and are used for up-down bidirectional positioning. The upper positioning block 5 is used for positioning the position between the safety pin and the valve, and the lower positioning block 10 is used for positioning the position between the safety pin and the refrigeration steel cylinder. The inner walls of the upper positioning block 5 and the lower positioning block 10 are coplanar with the inner wall of the side wall 1.

The positioning ring and the clamp spring 12 are separated at the middle ring block 9, and meanwhile, the local elasticity is increased.

The inner side of the curved wall 2 is provided with the triangular support block 3, so that the local rigidity is improved, the two sides of the triangular support block 3 are uniformly distributed along the central plane of the safety pin structure, and the upper and lower cambered surfaces are respectively tangent with the side line, so that the guiding function in the automatic plugging process is convenient to realize, and the handle rotation is adapted.

The joint of the straight key 11 and the clamp spring is a sharp corner.

The clamp spring main cavity 6 clamp spring outer wall 7 and the clamp spring front wall 8 are in smooth transition, and the use safety is improved.

The height of the safety pin is set to be an appropriate value, and the structural strength meets the use requirement after strict checking.

The working principle is as follows: when the refrigerant steel cylinder valve safety pin is used, according to the figures 1-4, firstly, a refrigerant steel cylinder valve is pre-tightened, after the refrigerant leakage is detected through detection equipment, the position and the degree of freedom of the valve are limited by a positioning device consisting of two upper positioning blocks 5 and two lower positioning blocks 10 in the refrigerant steel cylinder safety pin, meanwhile, the elastic clamp spring part in the refrigerant steel cylinder safety pin is attached to the neck of the valve, the elastic locking and the positioning of the refrigerant steel cylinder valve are completed, the degree of freedom of the valve is limited at the same time, and the safety of a tank body is enhanced.

It should be finally noted that the above only serves to illustrate the technical solution of the present invention, and not to limit the scope of the present invention, and that simple modifications or equivalent replacements performed by those skilled in the art to the technical solution of the present invention do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a refrigerant cylinder valve safety round pin, its characterized in that, is including jump ring and the holding ring that the integration is connected, the holding ring be closed cyclic annular for the relative position between location safety round pin and the refrigeration steel bottle, the jump ring be the major arc shape, be used for blocking refrigerant cylinder valve neck, the safety round pin be the elastic plastic material, and be plane symmetrical structure.

2. A refrigerant cylinder valve safety pin according to claim 1, wherein the positioning ring comprises two opposite side walls (1) and a curved wall (2), the curved wall (2) is connected with one end of the two side walls (1), and the other end of the two side walls (1) is smoothly connected with the clamp spring.

3. The safety pin for the valve of the refrigerant steel cylinder as claimed in claim 2, wherein the top and the bottom of the side wall (1) are respectively provided with an upper positioning block (5) and a lower positioning block (10) for bidirectional positioning.

4. The safety pin for the valve of the refrigerant steel cylinder as claimed in claim 3, wherein the number of the upper locating blocks (5) and the lower locating blocks (10) is two.

5. A refrigerant cylinder valve safety pin according to claim 3, wherein the inner walls of the upper locating block (5) and the lower locating block (10) are coplanar with the inner wall of the side wall (1).

6. A refrigerant cylinder valve safety pin as claimed in claim 2, wherein the curved wall (2) is provided with a triangular support block (3) on the inside.

7. A refrigerant cylinder valve safety pin according to claim 2, characterized in that a wedge-shaped cavity is formed between the two side walls (1).

8. A refrigerant cylinder valve safety pin according to claim 7, characterized in that the wedge-shaped cavity is formed by straight keys (11) on both side walls (1).

9. The safety pin of a refrigerant steel cylinder valve as claimed in claim 8, wherein the joint of the straight key (11) and the clamp spring is sharp-angled.

10. The refrigerant cylinder valve safety pin according to claim 1, wherein the inside surface and the outside surface of the clamp spring are smoothly transited.