Manual corrugated pipe valve

Abstract

The utility model relates to the technical field of corrugated pipe valves, in particular to a manual corrugated pipe valve which comprises a valve body, a valve body nut is movably installed on the outer surface of the top end of the valve body, the top end of the valve body nut is movably connected with a valve rod sleeve in a threaded mode through a locking nut, and the interior of the valve rod sleeve is rotationally connected with an adjusting valve rod through a bearing ring. And a hand wheel is installed at the top end of the adjusting valve rod, a corrugated pipe assembly is movably installed at the bottom end of the adjusting valve rod in a threaded connection mode, a sealing head is movably installed at the bottom end of the corrugated pipe assembly in a threaded connection mode, and an airflow channel is formed in the valve body and penetrates through the interior of the valve body. Through the arrangement of parts such as a sealing head, a corrugated pipe assembly, a valve body nut, a locking nut, an adjusting valve rod, a hand wheel and a valve rod sleeve, the problems that in the actual use process of an existing corrugated pipe valve, once a corrugated pipe is damaged, the maintenance difficulty is large; the whole corrugated pipe assembly needs to be replaced; and most sealing heads of the products of the type at present cannot be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows valves, in particular to a manual bellows valve. Background Art

[0002] The bellows valve is a pressure-balanced regulating valve with a compact valve body and an S-shaped streamlined fluid passage. It has low pressure drop, large flow rate and a wide adjustable range.

[0003] In actual use, the existing bellows valve has the problem that once the bellows is damaged, it is difficult to repair and the entire bellows assembly needs to be replaced. In addition, the sealing heads of most of these products are not replaceable. Therefore, corresponding improvements are made to address the above problems. Utility Model Content

[0004] The purpose of the present utility model is to provide a manual bellows valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a manual bellows valve, comprising a valve body, a valve body nut movably mounted on the top outer surface of the valve body, and the top end of the valve body nut is movably threadedly connected to a valve stem sleeve through a locking nut, the interior of the valve stem sleeve is rotatably connected to a regulating valve stem through a bearing ring, and a handwheel is mounted on the top end of the regulating valve stem, the bottom end of the regulating valve stem is movably threadedly mounted with a bellows assembly, and the bottom end of the bellows assembly is movably threadedly mounted with a sealing head.

[0006] Preferably, an air flow channel is opened inside the valve body, and the air flow channel runs through the interior of the valve body.

[0007] Preferably, a placement groove is provided inside the valve body, and the sealing head and the bellows assembly are arranged inside the placement groove.

[0008] Preferably, the placement groove is connected to the air flow channel.

[0009] Preferably, the sealing head is arranged inside the air flow channel.

[0010] Preferably, the placement groove is communicated with the interior of the valve stem sleeve.

[0011] Preferably, the side surface of the hand wheel is provided with friction lines.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The arrangement of components such as the sealing head, bellows assembly, valve body nut, locking nut, adjusting valve stem, handwheel and valve stem sleeve can effectively solve the problem that once the bellows is damaged in actual use, the maintenance is difficult and the entire bellows assembly needs to be replaced, and the sealing heads of most current products of this type cannot be replaced.

[0014] When the user rotates the handwheel clockwise, the regulating valve stem can be driven to rotate accordingly inside the valve stem sleeve, so that the regulating valve stem can produce a downward displacement change, thereby causing the bellows assembly to produce a downward compression deformation, thereby causing the sealing head to move downward inside the placement groove inside the valve body, thereby causing the sealing head to move downward to the inside of the air flow channel, thereby blocking the inside of the air flow channel, thereby achieving the purpose of blocking the flow of gas. Conversely, when the user rotates the handwheel counterclockwise, the regulating valve stem can be driven to rotate accordingly inside the valve stem sleeve, thereby causing the regulating valve stem to produce an upward displacement change, thereby causing the bellows assembly to produce an upward expansion and contraction deformation, thereby causing the sealing head to move upward in the air flow channel inside the valve body, thereby causing the sealing head to move upward to the inside of the placement groove, thereby enabling the inside of the air flow channel to be in an open state, thereby allowing gas to flow normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the utility model.

[0016] Figure 2 It is a schematic cross-sectional structure diagram of the main body of the utility model.

[0017] Figure 3 It is a side structural schematic diagram of the main body of the utility model.

[0018] In the figure: 1. Valve body; 2. Sealing head; 3. Bellows assembly; 4. Valve body nut; 5. Lock nut; 6. Adjusting valve stem; 7. Handwheel; 8. Valve stem sleeve. DETAILED DESCRIPTION

[0019] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0020] according to Figure 1-Figure 3As shown, it includes a valve body 1, an air flow channel is opened inside the valve body 1, and the air flow channel runs through the interior of the valve body 1, a valve body nut 4 is movably installed on the outer surface of the top end of the valve body 1, and the top end of the valve body nut 4 is movably screwed with a valve stem sleeve 8 through a locking nut 5, the interior of the valve stem sleeve 8 is rotatably connected to an adjusting valve stem 6 through a bearing ring, and a hand wheel 7 is installed on the top end of the adjusting valve stem 6, and the side surface of the hand wheel 7 is provided with friction lines, and the setting of the friction lines can increase the friction force, so that the user can easily rotate the hand wheel 7 to make the valve open or close. The bottom end of the regulating valve stem 6 is movably threadedly installed with a bellows assembly 3, and the bottom end of the bellows assembly 3 is movably threadedly installed with a sealing head 2. Since the bellows assembly 3 adopts a corrugated structure, the bellows assembly 3 itself has the characteristics of expansion or contraction. A placement groove is opened inside the valve body 1, and the sealing head 2 and the bellows assembly 3 are arranged inside the placement groove, and the placement groove is connected to the airflow channel. The sealing head 2 is arranged inside the airflow channel, and the placement groove is connected to the interior of the valve stem sleeve 8.

[0021] During use, the user can drive the regulating valve stem 6 to rotate accordingly inside the valve stem sleeve 8 by rotating the hand wheel 7 clockwise, so that the regulating valve stem 6 can produce a downward displacement change, thereby causing the bellows assembly 3 to produce a downward compression deformation, so that the sealing head 2 can move downward inside the placement groove inside the valve body 1, so that the sealing head 2 can move downward to the inside of the air flow channel, thereby blocking the inside of the air flow channel, thereby achieving the purpose of blocking the gas flow. Conversely, when the user rotates the hand wheel 7 counterclockwise, the regulating valve stem 6 can be driven to rotate accordingly inside the valve stem sleeve 8, so that the regulating valve stem 6 can produce an upward displacement change, thereby causing the bellows assembly 3 to produce an upward expansion and contraction deformation, thereby causing the sealing head 2 to move upward in the air flow channel inside the valve body 1, thereby causing the sealing head 2 to move upward to the inside of the placement groove, thereby opening the inside of the air flow channel, thereby allowing the gas to flow normally.

[0022] Since the bottom end of the regulating valve stem 6 is movably threaded with a bellows assembly 3, and the bottom end of the bellows assembly 3 is movably threaded with a sealing head 2, when the bellows assembly 3 and the sealing head 2 are damaged, they can be easily replaced accordingly. The sealing head 2 is replaceable and suitable for various gas media. The product includes interface sizes such as 6mm and 12mm.

[0023] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manual bellows valve comprising a valve body (1), characterized in that: A valve body nut (4) is movably mounted on the outer surface of the top end of the valve body (1), and the top end of the valve body nut (4) is movably screwed to a valve stem sleeve (8) via a locking nut (5), the interior of the valve stem sleeve (8) is rotatably connected to an adjusting valve stem (6) via a bearing ring, and a hand wheel (7) is mounted on the top end of the adjusting valve stem (6), and a bellows assembly (3) is movably screwed to the bottom end of the adjusting valve stem (6), and a sealing head (2) is movably screwed to the bottom end of the bellows assembly (3).

2. The manual bellows valve according to claim 1, characterized in that: An air flow channel is provided inside the valve body (1), and the air flow channel runs through the interior of the valve body (1).

3. The manual bellows valve according to claim 2, characterized in that: A placement groove is provided inside the valve body (1), and the sealing head (2) and the bellows assembly (3) are arranged inside the placement groove.

4. The manual bellows valve according to claim 3, characterized in that: The placement groove is communicated with the air flow channel.

5. The manual bellows valve according to claim 3, characterized in that: The sealing head (2) is arranged inside the air flow channel.

6. The manual bellows valve according to claim 3, characterized in that: The placement groove is communicated with the interior of the valve stem sleeve (8).

7. The manual bellows valve according to claim 1, characterized in that: The side surface of the hand wheel (7) is provided with friction lines.

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