CN219809454U

CN219809454U - Gas check valve

Info

Publication number: CN219809454U
Application number: CN202320605699.9U
Authority: CN
Inventors: 陈成; 麦志健; 高锦辉; 郭浩; 郭其明
Original assignee: Shunde Hong Kong And China Gas Co ltd
Current assignee: Shunde Hong Kong And China Gas Co ltd
Priority date: 2023-03-24
Filing date: 2023-03-24
Publication date: 2023-10-10
Anticipated expiration: 2033-03-24

Abstract

The utility model discloses a gas check valve, which comprises a connector, a check ball, a shell and a handle, wherein an air guide channel is formed in the shell, a mounting cavity is formed in the air guide channel, and the check ball is rotationally connected in the mounting cavity; this gas check valve is through setting up connector, check ball, casing, handle to utilize the check ball to rotate and connect in the casing to and the check ball is opened there is the air guide mouth, so, drives the check ball through the handle and rotates, realizes driving air guide mouth intercommunication or misplaced air guide passageway, thereby realizes opening or closing air guide passageway, controls the switch of this check valve, and overall structure is simple and practical reliable, easy and simple to handle.

Description

Gas check valve

Technical Field

The utility model relates to the technical field of fuel gas, in particular to a fuel gas check valve.

Background

The gas valve is a novel safety matching device for cutting off, connecting and adjusting gas in a pipeline, has good control characteristics and closing sealing performance, is suitable for various gas medium pipelines such as city gas, liquefied petroleum gas, natural gas, oxygen and the like, and most of the existing gas valves have conventional switching functions and have no non-return function, so that when the gas pipe and a tap water pipe are in staggered connection during the installation of a household gas pipeline, tap water of the tap water pipe can enter the gas pipeline, and great influence is caused. The utility model discloses a gas ball valve, it includes the valve body, the installation cavity has been seted up on the valve body, hexagon fixed slot has been seted up at the top of valve body, circular slot has been seted up to the top inner wall of installation cavity, logical groove has been seted up to the central point of hexagon fixed slot bottom inner wall, and logical groove is linked together with the circular slot, fixed mounting has the bearing in the circular slot, fixed mounting has the valve rod in the bearing, and the bottom of valve rod extends to the installation cavity, the mounting groove has been seted up at the top central point of valve rod. The utility model has compact structure, reasonable design and convenient operation, not only can effectively prevent staff from rotating the valve rod due to misoperation, but also can rapidly install the anti-theft lock under the condition of not using tools, and improves the installation efficiency. The gas ball valve has no check function and is not practical.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the gas check valve which has a simple and practical structure and is simple and convenient to operate.

In order to achieve the above purpose, the present utility model provides the following solutions: the gas check valve comprises a connector, a check ball, a shell and a handle, wherein an air guide channel is formed in the shell, a mounting cavity is formed in the air guide channel, the check ball is rotationally connected in the mounting cavity and used for closing or opening the air guide channel, and the connector is detachably connected with the shell and used for limiting the check ball in the mounting cavity; the check ball is provided with an air guide port penetrating through the whole check ball, the top of the shell is rotationally connected with the handle, the handle is downwards connected with the check ball, and the air guide port is driven to be communicated or staggered through rotating the handle.

The beneficial effects of the utility model are as follows: the gas check valve is simple and convenient to operate, the check ball is utilized to rotate and is connected in the shell, the check ball is provided with the gas guide port, so that the handle drives the check ball to rotate, the gas guide port is driven to be communicated or the gas guide channel is misplaced, the gas guide channel is opened or closed, the switch of the check valve is controlled, and the gas check valve is simple, practical and reliable in integral structure and simple and convenient to operate.

Further, an installation sleeve is formed at the top of the shell, and the handle is sleeved on the installation sleeve to realize the rotation of the handle on the installation sleeve.

Further, the handle is formed with a limiting part, two limiting blocks are formed on the outer side wall of the mounting sleeve, the two limiting blocks are arranged in a central symmetry mode, and the limiting parts respectively touch the limiting blocks to limit the maximum rotation range of the handle. By adopting the structure, the maximum rotation amplitude of the handle is limited, so that the check ball is prevented from being driven to rotate excessively, and the air guide port cannot be driven to be communicated or staggered with the air guide channel accurately.

Further, be provided with the connecting rod in the installation sleeve, the connecting rod upwards can dismantle the connection handle, the connecting rod bottom takes shape and has the connecting block, the check ball top is opened there is the spread groove, the spread groove is used for supplying the connecting block to insert fixedly. After the structure is adopted, the handle drives the check ball to rotate.

Further, a plurality of mounting grooves are formed in the outer side wall of the connecting rod, the mounting grooves are distributed at equal intervals along the length direction of the connecting rod, and sealing rings are sleeved on the mounting grooves. After the structure is adopted, the external air is prevented from entering the air guide channel from the gap between the mounting sleeve and the connecting rod.

Further, two limiting rings are arranged in the mounting cavity and are used for clamping the check ball together.

Further, the connector comprises a connecting piece, wherein the front end of the connecting piece is provided with a first threaded part, the rear end of the connecting piece is provided with a second threaded part, the first threaded part is in threaded connection with the shell, and the second threaded part is in threaded connection with the connector to realize detachable connection of the shell.

Further, a gas transmission channel is formed in the connector, a first rotating part is formed in the connector, and the first rotating part is used for communicating the gas guide channel and the gas transmission channel.

Further, a second rotating part is formed in the connector, a sealing plate is arranged in the connecting piece, a first rotating shaft is formed on the front surface of the sealing plate, a second rotating shaft is formed on the back surface of the sealing plate, the first rotating shaft rotates on the first rotating part, and the second rotating shaft rotates on the second rotating part.

Further, a reset spring is sleeved on the second rotating shaft, one end of the reset spring is propped against the second rotating part, the other end of the reset spring is propped against the sealing plate, and the reset spring is used for pushing the sealing plate to seal the first rotating part. After the structure is adopted, when the gas or tap water flows back into the check valve of the embodiment by arranging the sealing plate, the tap water can push the sealing plate to seal the first rotating part, so that the tap water is prevented from entering the gas pipeline through the gas guide channel, and the check valve has a check function.

Further, a sealing gasket is provided between the sealing plate and the first rotating portion.

Further, the connector end is formed with a third threaded portion.

Drawings

Fig. 1 is a perspective view of the overall structure of the present utility model.

Fig. 2 is an exploded view of the present utility model.

Fig. 3 is a front view of the present utility model.

Fig. 4 is an internal structural view of the present utility model.

Wherein 1 is a connector, 11 is a gas transmission channel, 12 is a second rotating part, 13 is a third threaded part, 2 is a ball, 21 is a gas guide port, 22 is a connecting groove, 3 is a shell, 31 is a gas guide channel, 32 is a mounting cavity, 33 is a limit ring, 34 is a mounting sleeve, 341 is a limit block, 35 is a connecting rod, 351 is a connecting block, 352 is a mounting groove, 353 is a sealing ring, 4 is a handle, 41 is a limit part, 5 is a connecting piece, 51 is a sealing plate, 511 is a first rotating shaft, 512 is a second rotating shaft, 52 is a first rotating part, 53 is a return spring, 54 is a sealing gasket, 551 is a first threaded part, 552 is a second threaded part.

Description of the embodiments

The following description of the embodiments of the present utility model will be made more complete and less obvious to those skilled in the art, based on the embodiments of the present utility model, for a part, but not all of the embodiments of the present utility model, without making any inventive effort.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 4, a gas check valve comprises a connector 1, a check ball 2, a housing 3, a handle 4 and a connecting piece 5, wherein an air guide channel 31 is formed in the housing 3, a mounting cavity 32 is formed in the air guide channel 31, the check ball 2 is rotatably connected in the mounting cavity 32, the check ball 2 is used for closing or opening the air guide channel 31, and the connector 1 is detachably connected with the housing 3 and is used for limiting the check ball 2 in the mounting cavity 32; wherein, the check ball 2 is provided with an air guide port 21 penetrating the whole check ball 2, the top of the shell 3 is rotationally connected with a handle 4, the handle 4 is downwards connected with the check ball 2, and the air guide port 21 is driven to be communicated or staggered with the air guide channel 31 by rotating the handle 4.

In this embodiment, a mounting sleeve 34 is formed on the top of the housing 3, and the handle 4 is sleeved on the mounting sleeve 34 to realize rotation of the handle 4 on the mounting sleeve 34.

In this embodiment, the handle 4 is formed with a limiting portion, the outer side wall of the mounting sleeve 34 is formed with two limiting blocks 341, the two limiting blocks 341 are centrally and symmetrically arranged, and the limiting portions respectively touch the limiting blocks 341 to limit the maximum rotation amplitude of the handle 4, wherein the maximum rotation amplitude is 90 °.

In this embodiment, a connecting rod 35 is disposed in the mounting sleeve 34, the connecting rod 35 is upwards detachably connected with the handle 4, a connecting block 351 is formed at the bottom of the connecting rod 35, a connecting groove 22 is formed at the top of the check ball 2, and the connecting groove 22 is used for inserting and fixing the connecting block 351.

In this embodiment, the outer side wall of the connecting rod 35 is provided with a plurality of mounting grooves 352, the plurality of mounting grooves 352 are arranged at equal intervals along the length direction of the connecting rod 35, and the mounting grooves 352 are sleeved with sealing rings 353.

In this embodiment, two limiting rings 33 are disposed in the mounting cavity 32, and the two limiting rings 33 are used for jointly clamping the check ball 2.

In this embodiment, the front end of the connecting member 5 is formed with a first threaded portion 551, the rear end is formed with a second threaded portion 552, the first threaded portion 551 is in threaded connection with the housing 3, and the second threaded portion 552 is in threaded connection with the connector 1 to detachably connect the housing 3 to the connector 1.

In this embodiment, the connector 1 is internally provided with the air delivery channel 11, the connecting piece 5 is internally provided with the first rotating part 12, the first rotating part 12 is used for communicating the air guide channel 31 with the air delivery channel 11, the connector 1 is internally provided with the second rotating part 52, the connecting piece 5 is internally provided with the sealing plate 51, the front surface of the sealing plate 51 is provided with the first rotating shaft 511, the back surface of the sealing plate 51 is provided with the second rotating shaft 512, the first rotating shaft 511 rotates on the first rotating part 12, and the second rotating shaft 512 rotates on the second rotating part 52.

In this embodiment, the second rotating shaft 512 is sleeved with a return spring 53, one end of the return spring 53 presses against the second rotating portion 52, the other end presses against the sealing plate 51, and the return spring 53 is used for pushing the sealing plate 51 to seal the first rotating portion 12.

In the present embodiment, a sealing gasket 54 is provided between the sealing plate 51 and the first rotating portion 52.

In the present embodiment, the connector 1 is formed with a third screw portion 13 at an end portion.

In this embodiment, in the normal state, the air guide opening 21 of the check ball 2 misses the air guide channel 31, so that the fuel gas cannot enter the air guide channel 11 through the air guide opening 21 and the first rotating part 52 and is output, and at this time, the return spring 53 pushes the sealing plate 51 to approach the first rotating part 52 until the sealing plate 51 contacts the first rotating part 51, and the sealing gasket 54 is matched to cover the first rotating part 51, so as to further limit the fuel gas from entering the air guide channel 31 into the air guide channel 11.

When the gas guide device needs to be opened, the handle 4 is rotated, the handle 4 drives the connecting rod 35 to rotate so as to drive the check ball 2 to rotate by 90 degrees, the gas guide port 21 is opposite to the gas guide channel 31, the gas guide channel 31 is opened, gas enters the gas guide channel 31 and then moves to the first rotating part 52 after passing through the gas guide port 21, and at the moment, the gas has certain air pressure so as to push the sealing plate 51 to move and compress the reset spring 53, so that the first rotating part 52 is opened, the gas can pass through the first rotating part 52 and enter the gas transmission channel 11, and the gas is transmitted to a rear user.

When the gas backflow phenomenon occurs, the return spring 53 pushes the sealing plate 51 to move and tightly press and close the first rotating part 52 under the pushing of the gas backflow, so that the backflow gas can be limited to enter the gas guide channel 31, and the non-return function is realized.

Similarly, the casing 3 of this embodiment is generally connected to a main gas pipe for receiving gas, the connector 1 of this embodiment is connected to a branch gas pipe for delivering gas to a user, when a misconnection between a water pipe and a gas pipe occurs, tap water enters the delivery channel 11 from the connector 1, and pushes the sealing plate 51 to press and close the first rotating part 52, and since the water pressure of the tap water is generally much greater than the gas pressure of the gas, the gas delivered from the gas guide channel 31 cannot press the sealing plate 51, thereby preventing the tap water from entering the gas pipe when the misconnection between the water pipe and the gas pipe occurs.

The above-described embodiments are merely preferred embodiments of the present utility model, and are not intended to limit the present utility model in any way. Any person skilled in the art can make many more possible variations and modifications of the technical solution of the present utility model or modify equivalent embodiments without departing from the scope of the technical solution of the present utility model by using the technical content disclosed above. Therefore, all equivalent changes according to the inventive concept are covered by the protection scope of the utility model without departing from the technical scheme of the utility model.

Claims

1. The utility model provides a gas check valve, includes connector (1), check ball (2), casing (3), handle (4), its characterized in that: an air guide channel (31) is formed in the shell (3), a mounting cavity (32) is formed in the air guide channel (31), the check ball (2) is rotationally connected in the mounting cavity (32), the check ball (2) is used for closing or opening the air guide channel (31), and the connector (1) is detachably connected with the shell (3) and used for limiting the check ball (2) in the mounting cavity (32); the check ball (2) is provided with an air guide port (21) penetrating through the whole check ball (2), the top of the shell (3) is rotationally connected with the handle (4), the handle (4) is downwards connected with the check ball (2), and the air guide port (21) is driven to be communicated or an air guide channel (31) is staggered by rotating the handle (4).

2. A gas check valve according to claim 1, wherein: the top of the shell (3) is provided with a mounting sleeve (34), and the handle (4) is sleeved on the mounting sleeve (34) to realize the rotation of the handle (4) on the mounting sleeve (34).

3. A gas check valve according to claim 2, wherein: the handle (4) is formed with a limiting part, two limiting blocks (341) are formed on the outer side wall of the mounting sleeve (34), the two limiting blocks (341) are arranged in a central symmetry mode, and the limiting parts respectively touch the limiting blocks (341) to limit the maximum rotation amplitude of the handle (4).

4. A gas check valve according to claim 3, wherein: the connecting rod (35) is arranged in the mounting sleeve (34), the connecting handle (4) can be dismounted upwards by the connecting rod (35), the connecting block (351) is formed at the bottom of the connecting rod (35), the connecting groove (22) is formed at the top of the check ball (2), and the connecting groove (22) is used for the connecting block (351) to be inserted and fixed.

5. A gas check valve according to claim 4, wherein: the connecting rod (35) lateral wall is opened there are a plurality of mounting grooves (352), and a plurality of mounting grooves (352) are arranged along connecting rod (35) length direction equidistant, cover sealing washer (353) on mounting groove (352).

6. A gas check valve according to claim 5, wherein: two limiting rings (33) are arranged in the mounting cavity (32), and the two limiting rings (33) are used for clamping the check ball (2) together.

7. A gas check valve according to claim 6, wherein: still include connecting piece (5), connecting piece (5) front end is formed with first screw thread portion (551), and the rear end is formed with second screw thread portion (552), first screw thread portion (551) and casing (3) threaded connection, second screw thread portion (552) and connector (1) threaded connection realize that casing (3) can dismantle connector (1).

8. A gas check valve according to claim 7, wherein: the novel air conditioner is characterized in that an air transmission channel (11) is formed in the connector (1), a first rotating part (12) is formed in the connecting piece (5), the first rotating part (12) is used for communicating the air guide channel (31) with the air transmission channel (11), a second rotating part (52) is formed in the connector (1), a sealing plate (51) is arranged in the connecting piece (5), a first rotating shaft (511) is formed on the front surface of the sealing plate (51), a second rotating shaft (512) is formed on the back surface of the sealing plate, the first rotating shaft (511) rotates on the first rotating part (12), and the second rotating shaft (512) rotates on the second rotating part (52).

9. A gas check valve according to claim 8, wherein: the second rotating shaft (512) is sleeved with a reset spring (53), one end of the reset spring (53) is propped against the second rotating part (52), the other end is propped against the sealing plate (51), and the reset spring (53) is used for pushing the sealing plate (51) to seal the first rotating part (12).

10. A gas check valve according to claim 9, wherein: the end part of the connector (1) is provided with a third thread part (13).