Anti-falling drain valve

Abstract

An anti-falling drain valve comprises a tubular main body connected with a pipe body or a container, a cock in threaded connection with the main body, and a sealing ring located between the main body and the cock, the cock is provided with a torsion part, the cock is made of plastic, the cock is provided with two elastic arms extending towards the interior of the pipe body or the container, and the two elastic arms are in threaded connection with the main body. An anti-falling protrusion extending back to the center of the body is arranged at the end of the elastic arm, the body is provided with an anti-falling supporting portion matched with the anti-falling protrusion, and when the plug cock is screwed out, a discharging gap is formed between the plug cock and the body.

Description

Technical Field

[0001] The invention relates to the field of fluids, in particular to an anti-drop-off discharge valve. Background Art

[0002] In the prior art, fluid pipelines and containers often need to be provided with discharge ports for discharging gas and liquid. Generally, a plug (cock) is threadedly connected with a sealing ring to block and seal the discharge port. When exhausting, the plug needs to be separated from the discharge port. In practice, the plug and the sealing ring are easy to fall off and get contaminated or lost, causing trouble to the operator. Some users will use a rope to connect the plug and the container, which has a more complicated structure and is difficult to tie the rope to the plug and the container. Summary of the invention

[0003] The object of the present invention is to provide an anti-dropping discharge valve to prevent the plug from being separated from the main body.

[0004] To achieve the above-mentioned purpose, the present invention provides an anti-falling discharge valve, comprising a tubular main body connected to a tube body or a container, a plug threadedly connected to the main body, and a sealing ring located between the main body and the plug, the plug being provided with a torsion portion, the plug being made of plastic, the plug having two elastic arms extending toward the tube body or the container, the ends of the elastic arms being provided with an anti-falling protrusion extending away from the center of the main body, the main body being provided with an anti-falling support portion cooperating with the anti-falling protrusion, and when the plug is screwed out, a discharge gap is provided between the plug and the main body.

[0005] In one embodiment of the present invention, the main body includes a threaded fitting section with a larger diameter and a sealing fitting section with a smaller diameter. The plug is provided with a threaded section and a sealing section corresponding to the positions of the threaded fitting section and the sealing fitting section respectively. The sealing section is sleeved with a sealing ring. When the plug is screwed out, there is a discharge gap between the sealing section and the threaded fitting section. In this way, the length of the elastic arm is relatively short, and the length of the elastic arm only needs to be greater than the length of the threaded section.

[0006] In one embodiment of the present invention, the sealing section is provided with a receiving groove for receiving part of the sealing rings, and the number of the sealing rings is multiple to ensure effective sealing.

[0007] In one embodiment of the present invention, a trumpet-shaped transition section is provided between the threaded fitting section and the sealing fitting section to facilitate installation of the plug.

[0008] In one embodiment of the present invention, the plug further comprises a limiting flange abutting against the upper end surface of the main body, and when the limiting flange abuts against the main body, the sealing ring is located between the sealing section and the sealing matching section.

[0009] In one embodiment of the present invention, the twisting portion is a plate parallel to the axis of the plug, and the user can rotate the plug by hand to tighten or unscrew it.

[0010] In one embodiment of the present invention, the anti-fall-off protrusion is provided with an installation insertion guide inclined surface, which is convenient for installation.

[0011] In one embodiment of the present invention, when the cock is screwed out, the anti-falling protrusion abuts against the anti-falling support portion.

[0012] In one embodiment of the present invention, the anti-falling support portion is the lower end surface of the main body.

[0013] In one embodiment of the present invention, the stopper is an integrally formed structure.

[0014] In the present invention, elastic arms and anti-dropping protrusions are provided, so that the cock will not be separated from the main body when the user exhausts air or discharges liquid, thereby avoiding the trouble caused by falling and being contaminated by dirt or being lost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of an anti-dropping discharge valve according to the first embodiment of the present invention.

[0016] Figure 2 for Figure 1 Exploded view of the anti-dropout discharge valve.

[0017] Figure 3 for Figure 1 Cross-sectional view of an anti-dropout discharge valve.

[0018] Figure 4 for Figure 3 A cross-sectional view of the anti-dropout discharge valve when the plug is screwed out.

[0019] Figure 5 Explosion diagram of an anti-dropping discharge valve according to a second embodiment of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-4The anti-falling discharge valve of the first embodiment of the present invention comprises a tubular main body 1 connected to a pipe body 100, a plug 2 threadedly connected to the main body 1, and a sealing ring 3 located between the main body 1 and the plug 2. The plug 2 is provided with a torsion portion 21. The plug 2 is made of plastic. The plug 2 has two elastic arms 22 extending toward the inside of the pipe body 100. The ends of the elastic arms 22 are provided with anti-falling protrusions 23 extending back to the center of the main body 1. The main body 1 has an anti-falling support portion 11 cooperating with the anti-falling protrusion 23. When the plug 2 is screwed out, a discharge gap 10 is provided between the plug 2 and the main body 1.

[0022] The main body 1 includes a threaded fitting section 1a with a larger diameter and a sealing fitting section 1b with a smaller diameter. The plug 2 is provided with a threaded section 2a and a sealing section 2b corresponding to the positions of the threaded fitting section 1a and the sealing fitting section 1b respectively. The sealing section 2b is sleeved with a sealing ring 3. When the plug 2 is screwed out, there is a discharge gap 10 between the sealing section 2b and the threaded fitting section 1a, so that the length of the elastic arm 22 is relatively short, and the length of the elastic arm 22 is greater than the length of the threaded section. The sealing section 2b is provided with a receiving groove 4 for receiving part of the sealing ring 3. The number of sealing rings 3 is multiple to ensure effective sealing. There is a trumpet-shaped transition section 1c between the threaded fitting section 1a and the sealing fitting section 1b to facilitate the installation of the plug 2.

[0023] The plug 2 also has a limiting flange 24 against the upper end face of the main body 1. When the limiting flange 24 is against the main body 1, the sealing ring 3 is located between the sealing section 2b and the sealing matching section 1b. The twisting portion 21 is a plate parallel to the axis of the plug 2. The user can rotate the plug 2 by hand to tighten or unscrew it. The anti-dropping protrusion 23 is provided with an installation insertion guide slope 230, which is convenient for installation.

[0024] When the cock 2 is screwed out, the anti-dropping protrusion 23 abuts against the anti-dropping support portion 11. The anti-dropping support portion 11 is the lower end surface of the main body 1. The cock 2 is an integrally formed structure.

[0025] See also Figure 5 In the second embodiment, the main body 1 is connected to the container 200. The sealing ring 3 is arranged on the upper end surface of the main body 1. The threaded section 2a can be completely removed from the main body 1, and the elastic arm 22 is relatively long.

[0026] In other embodiments, the accommodating groove 4 may be provided at the sealing fitting section 1 b , and the twisting portion 21 may be a square block or a hexagonal block.

[0027] In the present invention, the elastic arm 22 and the anti-dropping protrusion 23 are provided, so that the tap 2 will not be separated from the main body 1 when the user exhausts air or discharges liquid, thereby avoiding the trouble caused by falling and being contaminated by dirt or being lost.

[0028] 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. An anti-drop discharge valve, comprising a tubular main body connected to a pipe body or a container, a plug threadedly connected to the main body, and a sealing ring located between the main body and the plug, wherein the plug is provided with a twisting portion, characterized in that: The plug is made of plastic and has two elastic arms extending toward the tube body or the container. The ends of the elastic arms are provided with anti-falling protrusions extending away from the center of the main body. The main body has an anti-falling support portion cooperating with the anti-falling protrusions. When the plug is screwed out, a discharge gap is provided between the plug and the main body.

2. The anti-drop discharge valve according to claim 1, characterized in that: The main body includes a threaded fitting section with a larger diameter and a sealing fitting section with a smaller diameter. The plug is provided with a threaded section and a sealing section corresponding to the positions of the threaded fitting section and the sealing fitting section respectively. The sealing section is sleeved with a sealing ring. When the plug is screwed out, there is the discharge gap between the sealing section and the threaded fitting section.

3. The anti-drop discharge valve according to claim 2, characterized in that: The sealing section is provided with a receiving groove for receiving part of the sealing rings, and the number of the sealing rings is multiple.

4. The anti-drop discharge valve according to claim 3, characterized in that: A trumpet-shaped transition section is provided between the thread fitting section and the sealing fitting section.

5. The anti-drop discharge valve according to claim 4, characterized in that: The cock also has a limiting flange abutting against the upper end surface of the main body.

6. The anti-drop discharge valve according to claim 5, characterized in that: The torsion portion is a plate body parallel to the axis of the cock.

7. The anti-drop discharge valve according to claim 6, characterized in that: The anti-falling protrusion is provided with an installation insertion guiding inclined surface.

8. The anti-drop discharge valve according to claim 7, characterized in that: When the cock is screwed out, the anti-falling protrusion abuts against the anti-falling support portion.

9. The anti-drop discharge valve according to claim 8, characterized in that: The anti-falling support portion is the lower end surface of the main body.

10. The anti-drop discharge valve according to claim 9, characterized in that: The cock is an integrally formed structure.

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