Protection device for valve

Abstract

The utility model discloses a protective device for a valve, which belongs to the technical field of valves, and is characterized by comprising a protective cover and an unlocking cap, the protective cover is used for covering a valve body, a limiting cover and a limiting piece are movably arranged in the protective cover, the limiting cover can press the limiting piece into a limiting groove of the valve body, and the unlocking cap is used for unlocking the limiting piece. When the unlocking cap enables the limiting cover to be far away from the limiting piece, the limiting piece can be taken away from the limiting groove of the valve body through the protective cover, and the protective device can protect the valve rod and prevent the valve rod from being maliciously rotated by other people.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field, and particularly relates to a protection device for valve. BACKGROUND

[0002] At present, the valve with a locking device on a tap water pipeline, a heating pipeline or a gas pipeline is widely used.

[0003] A locking valve with good sealing is disclosed in Chinese patent CN219911982U, which comprises a valve body, a valve stem, a pressure cap and a valve core. A valve cover is formed on the valve body, and the valve core is arranged in the valve body. One end of the valve stem is connected with the valve core, and the other end of the valve stem extends beyond the end of the valve cover. A gap is formed between the inner wall of the valve cover and the outer peripheral wall of the valve stem. The inner wall of the valve cover extends inwardly to form a supporting portion with a through hole. The valve stem is sleeved in the through hole of the supporting portion. A gasket and a pressure cap are further arranged. The gasket is sleeved on the outer periphery of the valve stem and arranged on the supporting portion. The pressure cap is sleeved on the valve stem and at least partially arranged in the gap between the inner wall of the valve cover and the outer peripheral wall of the valve stem. The space formed by the gasket, the inner wall of the valve cover, the outer peripheral wall of the valve stem and the pressure cap is filled with packing.

[0004] The above technical solution has the following defects: one end of the valve stem of the locking valve is connected with the valve core, and the other end of the valve stem extends beyond the end of the valve cover. Since the valve stem is directly exposed to the outside, it is easy to be maliciously rotated by others. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above problems existing in the prior art, and provides a protection device for valve. The technical problem to be solved by the utility model is how to protect the valve stem and avoid malicious rotation by others.

[0006] The above technical purpose of the utility model can be realized by the following technical solution: a protection device for valve, characterized by comprising a protection cover and an unlocking cap. The protection cover is arranged on the valve body. A limiting cover and a limiting piece are movably arranged in the protection cover. The limiting cover can press the limiting piece into the limiting groove of the valve body, so that the protection cover and the valve body are relatively fixed. When the unlocking cap moves the limiting cover away from the limiting piece, the protection cover can take the limiting piece away from the limiting groove of the valve body.

[0007] In the above protection device for valve, the limiting piece is an oil seal spring or a soft spring connected in a ring shape.

[0008] In the above protection device for valve, a return spring is arranged between the protection cover and the limiting cover. The return spring is used to push the limiting cover, so that the limiting cover pushes the limiting piece towards the limiting groove.

[0009] In the valve protection device, the inner side wall of the protection cover is provided with an inclined surface one, when the limiting cover pushes the limiting part to pass through the inclined surface one, the inclined surface one can make the limiting part shrink inwards.

[0010] In the valve protection device, the outer side wall of the limiting cover is provided with an inclined surface two which can be combined with the inclined surface one.

[0011] In the valve protection device, the unlocking cap is provided with a magnetic block one, the limiting cover is provided with a magnetic block two which is magnetically attracted to the magnetic block one, the magnetic attraction force between the magnetic block one and the magnetic block two can make the limiting cover move and press the reset spring in cooperation with the protection cover.

[0012] In the valve protection device, the inner side wall of the protection cover is provided with a positioning step, the step surface of the positioning step can abut against the surface of the limiting part, and the end surface of the limiting cover can abut against the surface of the limiting part.

[0013] In the valve protection device, the end of the limiting cover is provided with a positioning protrusion, the protection cover is provided with a positioning groove, one end of the reset spring is sleeved on the positioning protrusion, and the other end of the reset spring is located in the positioning groove.

[0014] In the valve protection device, the protection cover is provided with a limiting plane one, the limiting cover is provided with a limiting plane two, and the limiting plane one can abut against the limiting plane two.

[0015] In the valve protection device, the protection cover comprises a main body part and a cover body part, and the main body part is connected with the cover body part.

[0016] In conclusion, the valve protection device has the beneficial effects that:

[0017] The protection cover is arranged on the valve body to cover the valve rod, the limiting part is pressed into the limiting groove of the valve body through the limiting cover, the protection cover and the valve body are relatively fixed, therefore the protection cover cannot be removed, the valve rod can be effectively protected, and the valve rod cannot be maliciously rotated by others, when the valve rod needs to be rotated, the limiting cover is moved away from the limiting part through the unlocking cap, at this moment, the protection cover can take the limiting part away from the limiting groove of the valve body, therefore the protection cover can be directly removed to expose the valve rod. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a structural schematic view of the embodiment;

[0019] Fig. 2 It is a sectional view of the embodiment;

[0020] Fig. 3 Partially sectional view of an embodiment.

[0021] Reference numerals: 1, unlocking cap; 2, protective cover; 21, main body part; 22, cover part; 3, limiting cover; 4, limiting piece; 5, limiting groove; 6, reset spring; 7, inclined surface one; 8, inclined surface two; 9, magnetic block one; 10, magnetic block two; 11, positioning step; 12, positioning protrusion; 13, positioning groove; 14, limiting plane one; 15, limiting plane two; 16, valve body; 17, valve rod. DETAILED DESCRIPTION

[0022] The following is a specific embodiment of the present application and further describes the technical solution of the present application in combination with the drawings, but the present application is not limited to these embodiments.

[0023] A protective device for a valve, as shown in Figs. 1 to 3 , comprises a protective cover 2 and an unlocking cap 1.

[0024] The protective cover 2 is used to cover the valve rod 17 on the valve body 16, and the valve rod 17 is covered by the protective cover 2 to form protection for the valve rod 17, thereby avoiding malicious rotation of the valve rod 17 by others.

[0025] The limiting cover 3 can press the limiting piece 4 into the limiting groove 5 of the valve body 16, so that the protective cover 2 and the valve body 16 remain relatively fixed, and when the unlocking cap 1 moves the limiting cover 3 away from the limiting piece 4, the protective cover 2 can take the limiting piece 4 away from the limiting groove 5 of the valve body 16.

[0026] By keeping the protective cover 2 and the valve body 16 relatively fixed, others can not arbitrarily remove the protective cover 2, thereby forming effective protection of the valve rod 17 by the protective cover 2.

[0027] In this embodiment, the limiting piece 4 is located below the limiting cover 3, and the limiting piece 4 is an oil seal spring or a soft spring connected end to end in a ring shape.

[0028] The inner side wall of the protective cover 2 is provided with a positioning step 11, and the step surface of the positioning step 11 can abut against the surface of the limiting piece 4, thereby limiting and supporting the limiting piece 4, and when a user removes the protective cover 2 by external force, the protective cover 2 can take the limiting piece 4 away from the limiting groove 5 of the valve body 16.

[0029] The reset spring 6 is arranged between the protective cover 2 and the limiting cover 3, specifically, one end of the reset spring 6 abuts or is connected with the inner bottom surface of the protective cover 2, and the other end of the reset spring 6 abuts against the upper surface of the limiting cover 3, the reset spring 6 is used to push the limiting cover 3, so that the limiting cover 3 pushes the limiting piece 4 to the limiting groove 5, that is, the elastic restoring force of the reset spring 6 is used to push the limiting cover 3 to move, so that the end surface of the limiting cover 3 abuts against the surface of the limiting piece 4, and with the movement of the limiting cover 3, the limiting piece 4 is further pushed to move.

[0030] It should be noted that when the limiting cover 3 moves and the limiting piece 4 is pressed into the limiting groove 5 of the valve body 16, at this time the limiting groove 5 limits the limiting piece 4, the surface of the limiting piece 4 abuts against the step surface of the positioning step 11, and due to the force of the reset spring 6 acting on the limiting cover 3, the end surface of the limiting cover 3 always abuts against the surface of the limiting piece 4, thereby ensuring that the limiting piece 4 is stably clamped in the limiting groove 5, that is, the limiting piece 4 cannot be taken out of the limiting groove 5, the protective cover 2 cannot be taken out of the limiting piece 4, and the protective cover 2 and the valve body 16 remain relatively fixed, thereby realizing effective protection of the valve rod 17 by the protective cover 2 and avoiding malicious rotation of the valve rod 17 by others.

[0031] The end of the limiting cover 3 is provided with a positioning protrusion 12, the protective cover 2 is provided with a positioning groove 13, one end of the reset spring 6 is sleeved on the positioning protrusion 12, and the other end of the reset spring 6 is located in the positioning groove 13, and the positioning of the reset spring 6 by the positioning protrusion 12 and the positioning groove 13 can effectively ensure the stability of the reset spring 6.

[0032] The inner side wall of the protective cover 2 is provided with an inclined surface one 7, when the limiting cover 3 pushes the limiting piece 4 to pass through the inclined surface one 7, the inclined surface one 7 can make the limiting piece 4 shrink radially inward, that is, the inclined surface one 7 is inclined from outside to inside from top to bottom, so that the limiting piece 4 will be subjected to an inward force when passing through the inclined surface one 7, and this force will cause the limiting piece 4 to gradually shrink radially inward during the process of passing through the inclined surface one 7, thereby ensuring that the limiting piece 4 can be clamped in the limiting groove 5 of the valve body 16.

[0033] The outer side wall of the limiting cover 3 is provided with an inclined surface two 8 which can be in close contact with the inclined surface one 7, so as to ensure that the limiting cover 3 can smoothly pass through the inclined surface one 7 when pushing the limiting piece 4.

[0034] The magnetic block one 9 is arranged on the unlocking cap 1, the magnetic block two 10 is arranged on the limiting cover 3 and is magnetically attracted to the magnetic block one 9, the magnetic attraction force of the magnetic block one 9 and the magnetic block two 10 can make the limiting cover 3 move and press the reset spring 6 in cooperation with the protective cover 2, that is, the magnetic attraction force of the magnetic block one 9 and the magnetic block two 10 makes the limiting cover 3 overcome the elastic force of the reset spring 6, so that the limiting cover 3 slides away from the limiting piece 4, the limiting piece 4 loses the limitation of the limiting cover 3, at this time, the protective cover 2 can take the limiting piece 4 away from the limiting groove 5 of the valve body 16, and the protective cover 2 can be taken away at the same time due to the magnetic attraction force of the magnetic block one 9 and the magnetic block two 10 when the unlocking cap 1 is removed.

[0035] The limiting plane one 14 is arranged in the protective cover 2, the limiting plane two 15 is arranged on the limiting cover 3, and the limiting plane one 14 can abut against the limiting plane two 15, so as to limit the limiting cover 3 and limit the stroke of the limiting cover 3.

[0036] In the embodiment, the protective cover 2 comprises a main body part 21 and a cover part 22, the main body part 21 is threadedly connected with the cover part 22, and it should be noted that, since the main body part 21 is threadedly connected with the cover part 22, the limiting piece 4, the limiting cover 3 and the reset spring 6 can be placed in the main body part 21 during installation, so that the installation is more convenient and fast, and it should be noted that, when the main body part 21 is threadedly connected with the cover part 22, an adhesive is coated on the connection part of the two, so that the two cannot be separated after the thread connection is completed.

[0037] The working principle of the utility model is as follows:

[0038] When the user sets the protective cover 2 on the valve body 16 to cover the valve rod 17, the limiting cover 3 moves under the elastic force of the reset spring 6, the limiting cover 3 pushes the limiting piece 4 to slide and make the limiting piece 4 pass through the inclined surface one 7 and be reduced in diameter, until the limiting piece 4 is pressed into the limiting groove 5 of the valve body 16, at this time, the end of the limiting cover 3 abuts against the surface of the limiting piece 4, the step surface of the positioning step 11 abuts against the surface of the limiting piece 4, the protective cover 2 is relatively fixed with the valve body 16, and the protective cover 2 cannot be removed, when the user covers the unlocking cap 1 on the protective cover 2, at this time, the magnetic attraction force of the magnetic block one 9 and the magnetic block two 10 makes the limiting cover 3 move and press the reset spring 6 in cooperation with the protective cover 2, the limiting cover 3 is away from the limiting piece 4, at this time, the unlocking cap 1 is removed by external force, the unlocking cap 1 drives the protective cover 2 to separate from the valve body 16 by the magnetic attraction force of the magnetic block one 9 and the magnetic block two 10, and the protective cover 2 takes the limiting piece 4 away from the limiting groove 5.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present application; those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A protection device for a valve, characterized by: The utility model provides a valve protection device, including protective cover (2) and unlocking cap (1), the protective cover (2) is used for covering on valve body (16), the limit cover (3) and the limit piece (4) are movably arranged in the protective cover (2), the limit cover (3) can press into the limit piece (4) in the limit groove (5) of valve body (16), make the protective cover (2) with valve body (16) keep relative fixed, when the unlocking cap (1) makes the limit cover (3) away from the limit piece (4), the protective cover (2) can take the limit piece (4) from the limit groove (5) of valve body (16).

2. A protection device for a valve according to claim 1, characterized in that: The limit piece (4) is an oil seal spring or a soft spring connected in a ring shape.

3. A protection device for a valve according to claim 1, characterized in that: A return spring (6) is arranged between the protective cover (2) and the limit cover (3), and the return spring (6) is used to push the limit cover (3) to push the limit piece (4) to the limit groove (5).

4. A protection device for a valve according to claim 3, characterized in that: An inclined surface one (7) is arranged on the inner side wall of the protective cover (2), and when the limit cover (3) pushes the limit piece (4) to pass through the inclined surface one (7), the inclined surface one (7) can make the limit piece (4) shrink inwardly.

5. A protection device for a valve according to claim 4, characterized in that: An inclined surface two (8) is arranged on the outer side wall of the limit cover (3), and the inclined surface two (8) can be attached to the inclined surface one (7).

6. A protection device for a valve according to claim 3, characterized in that: A magnetic block one (9) is arranged on the unlocking cap (1), a magnetic block two (10) is arranged on the limit cover (3) and magnetically attracted to the magnetic block one (9), and the magnetic attraction force between the magnetic block one (9) and the magnetic block two (10) can make the limit cover (3) move and press the return spring (6) in cooperation with the protective cover (2).

7. A protection device for a valve according to claim 1, characterized in that: A positioning step (11) is arranged on the inner side wall of the protective cover (2), the step surface of the positioning step (11) can abut against the surface of the limit piece (4), and the end surface of the limit cover (3) can abut against the surface of the limit piece (4).

8. A protection device for a valve according to claim 3, characterized in that: A positioning protrusion (12) is arranged on the end of the limit cover (3), a positioning groove (13) is arranged in the protective cover (2), one end of the return spring (6) is sleeved on the positioning protrusion (12), and the other end of the return spring (6) is located in the positioning groove (13).

9. A protection device for a valve according to any one of claims 1-8, characterized in that: A limit plane one (14) is arranged in the protective cover (2), a limit plane two (15) is arranged on the limit cover (3), and the limit plane one (14) can abut against the limit plane two (15).

10. A protection device for a valve according to any one of claims 1-8, characterized in that: The protective cover (2) comprises a main body part (21) and a cover body part (22), and the main body part (21) is connected with the cover body part (22).

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