CN217130417U - Low-concentration gas pipeline check valve - Google Patents

Abstract

The utility model belongs to the gas field of carrying specifically discloses a low concentration gas pipeline check valve, the check valve frame that sets up including the slope, one side surface level of check valve frame runs through and has seted up multiunit delivery square hole, one side surface of check valve frame extends there is the fixing base, the fixing base is located the top in delivery square hole, the tip of fixing base is inlayed and is had the connecting axle, one side surface laminating of check valve frame installs the non return baffle, the tip of connecting axle is rotated with the upper portion of non return baffle and is connected, the non return baffle covers in delivery square hole department, the delivery square hole is located the lower part department of non return baffle. The utility model discloses security when can improve the gas and carry can guarantee simultaneously that the non return baffle is abundant to be blown away by the gas.

Description

Low-concentration gas pipeline check valve

Technical Field

The utility model belongs to the gas field of carrying specifically discloses a low concentration gas pipeline check valve.

Background

In gas power generation, particularly low-concentration gas power generation, a water ring vacuum pump is mostly adopted as pumping equipment to pressurize and pump gas for ensuring safety, and underground gas pumping is divided into a high negative pressure pipeline and a low negative pressure pipeline. In order to ensure the power generation efficiency of the gas generator set, the gas pumped and discharged by the high negative pressure pipeline and the low negative pressure pipeline is usually mixed through a collecting pipe, and meanwhile, the gas is conveyed by matching with fine water mist. When the high negative pressure or low negative pressure water ring vacuum pump stops operating due to an emergency, the other pump still in operation can convey gas into another pipeline which stops working through the gas collecting pipe, namely the phenomenon of gas backflow is caused, and the potential safety hazard is large.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a low-concentration gas pipeline check valve for solving the problems in the prior art.

In order to achieve the above purpose, the utility model provides a check valve of a low-concentration gas pipeline, which comprises a check valve frame which is obliquely arranged, a plurality of groups of square conveying holes are horizontally arranged on the outer surface of one side of the check valve frame in a penetrating way, a fixed seat extends on the outer surface of one side of the check valve frame, the fixed seat is positioned above the square conveying hole, the end part of the fixed seat is embedded with a connecting shaft, the outer surface of one side of the check valve frame is provided with a check baffle in a fitting manner, the end part of the connecting shaft is rotationally connected with the upper part of the non-return baffle plate, the non-return baffle plate covers the position of the conveying square hole, the square conveying hole is positioned at the lower part of the non-return baffle, the side surface of the non-return baffle is provided with a sealing element, the outer surface of the other side of the check valve frame extends to form a gas guide frame, the gas guide frame is located at the position of the conveying square hole, and a guide inclined surface is formed in the inner outer surface of the gas guide frame in an inwards inclined mode.

In the above technical scheme, preferably, a bearing groove is formed in the upper portion of the non-return baffle, and the fixing seat is located inside the bearing groove.

Preferably, the edge of the upper part of the non-return baffle is provided with an arc surface, and the end part of the connecting shaft penetrates through the inner wall of the bearing groove to be embedded in a rotating mode.

Preferably, the sealing member comprises a sealing rubber pad mounted on the side of the non-return baffle.

Preferably, the side surface of the non-return baffle is provided with a groove, and the sealing rubber pad is fixed in the groove.

Preferably, the fixing seat and the connecting shaft are integrally formed, and the opening of the gas guide frame is horizontally arranged.

Compared with the prior art, the utility model discloses following beneficial effect has: through the check valve frame that the slope set up, can make gas blow up the check baffle and utilize the transport square hole to carry the back, the check baffle pastes tightly on the check valve frame of slope under the dual function of slope and dead weight, and order about the check baffle under the gas pressure that returns and compress tightly on the check valve frame, with it is closed to the transport square hole under the sealed of check baffle, prevent the gas backward flow, reach the non return purpose, thereby improve the security of carrying gas, and be under the effect of the gas guide frame that the level set up at the opening, the inclined plane that leads that can utilize the inside slope to set up in the gas guide frame gathers pressurized gas, and blow the lower part position of check baffle through the guide of transport square hole, with this guarantee that the check baffle is abundant to be blown away by gas.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the non-return baffle of the present invention at the upper portion;

FIG. 3 is a sectional view of the gas guide frame of the present invention;

fig. 4 is a use view of the present invention.

In the figure: 1. a check valve frame; 2. a non-return baffle plate; 3. a gas guide frame; 4. a bearing groove; 5. a fixed seat; 6. a connecting shaft; 7. sealing the rubber pad; 8. a guide slope; 9. conveying square holes; 10. a groove; 11. a gas pipe.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and the present invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1-4 a low concentration gas pipeline check valve, check valve frame 1 including the slope setting, the multiunit square hole 9 of carrying has been seted up to one side surface level of check valve frame 1, one side surface of check valve frame 1 extends there is fixing base 5, fixing base 5 is located the top of square hole 9 of carrying, the tip of fixing base 5 is inlayed and is had connecting axle 6, check baffle 2 is installed in the laminating of one side surface of check valve frame 1, check valve frame 1 through the slope setting, can make better the laminating of check baffle 2 when reseing under the action of gravity tightly on check valve frame 1, fixing base 5 and connecting axle 6 play the effect of connecting check baffle 2.

The tip of connecting axle 6 is rotated with the upper portion of non return baffle 2 and is connected, bearing groove 4 has been seted up on the upper portion of non return baffle 2, fixing base 5 is located the inside of bearing groove 4, the upper portion edge of non return baffle 2 is seted up to the cambered surface, the tip of connecting axle 6 runs through to rotate and inlays in the inner wall of bearing groove 4, non return baffle 2 covers in transport square hole 9 department, transport square hole 9 is located the lower part department of non return baffle 2, set up to the cambered surface through the upper portion edge with non return baffle 2, can guarantee that non return baffle 2 rotates steadily, transport square hole 9 is located the lower part department of non return baffle 2, can guarantee that non return baffle 2 is blown open when the gas blows.

The sealing element is arranged on the side surface of the non-return baffle 2 and comprises a sealing rubber gasket 7 arranged on the side surface of the non-return baffle 2, a groove 10 is arranged on the side surface of the non-return baffle 2, the sealing rubber gasket 7 is fixed in the groove 10, a gas guide frame 3 extends from the outer surface of the other side of the non-return valve frame 1, the gas guide frame 3 is positioned at a conveying square hole 9, a guide inclined surface 8 is obliquely arranged inwards on the outer surface of the inner part of the gas guide frame 3, the fixed seat 5 and the connecting shaft 6 are integrally formed, the opening of the gas guide frame 3 is horizontally arranged, can bear sealing rubber pad 7 through the recess 10 that sets up, sealing rubber pad 7 can improve the leakproofness between non return valve frame 1 and the non return baffle 2, and inwards slope is opened and is equipped with the gas pedestal 3 that leads inclined plane 8, can gather gas, and the opening of gas pedestal 3 is the level setting, can easily the gas entering.

When in use, the obliquely arranged check valve frame 1 is fixed in the gas pipe 11, the gas guide frame 3 corresponds to the gas inlet end, when pressurized gas enters the gas pipe 11 for conveying, the pressurized gas can be guided by the gas guide frame 3 with a horizontal opening, and the pressurized gas is gathered by the guide slope 8 which is arranged in the gas guide frame 3 and is inclined inwards, and the lower part of the non-return baffle 2 is blown by the guide of the square conveying hole 9, so that the non-return baffle 2 is turned upwards, the gas can be conveyed out through the square conveying hole 9, after the conveying is finished, the check baffle 2 is tightly attached to the inclined check valve frame 1 under the dual actions of inclination and self-weight, and the check baffle 2 is driven to be pressed on the check valve frame 1 under the pressure of returned gas, so as to close the square conveying hole 9 under the sealing of the check baffle 2, prevent the gas from flowing back and achieve the check purpose.

In the present invention, the terms "mounting", "connecting", "fixing" and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, the appearances of the phrases "one embodiment," "some embodiments," "a specific embodiment," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment or example, but rather to the same embodiment or example. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a low concentration gas pipeline check valve, its characterized in that, including the check valve frame (1) that the slope set up, the one side surface level of check valve frame (1) runs through and has seted up multiunit square hole (9) of carrying, the one side surface extension of check valve frame (1) has fixing base (5), fixing base (5) are located the top of square hole of carrying (9), the tip of fixing base (5) is inlayed and is had connecting axle (6), one side surface laminating of check valve frame (1) is installed check baffle (2), the tip of connecting axle (6) is rotated with the upper portion of check baffle (2) and is connected, check baffle (2) cover in square hole of carrying (9) department, square hole (9) are located the lower part department of check baffle (2), the side-mounting of check baffle (2) has the sealing member, the opposite side surface extension of check valve frame (1) has gas guide (3), the gas guide frame (3) is located at the conveying square hole (9), and a guide inclined plane (8) is formed in the inner outer surface of the gas guide frame (3) in an inwards inclined mode.

2. The check valve for low-concentration gas pipelines according to claim 1, wherein a bearing groove (4) is formed in the upper part of the check baffle (2), and the fixed seat (5) is located inside the bearing groove (4).

3. The check valve for low-concentration gas pipelines according to claim 2, wherein the edge of the upper part of the check baffle (2) is provided with an arc surface, and the end part of the connecting shaft (6) penetrates through and is rotatably embedded in the inner wall of the bearing groove (4).

4. The low concentration gas pipe check valve of claim 1, wherein the sealing member comprises a sealing rubber gasket (7) installed at a side of the check damper (2).

5. The check valve for low-concentration gas pipeline as claimed in claim 4, wherein the side surface of the check baffle (2) is provided with a groove (10), and the sealing rubber gasket (7) is fixed inside the groove (10).

6. The check valve for low-concentration gas pipeline according to claim 1, wherein the fixing seat (5) is integrally formed with the connecting shaft (6), and the opening of the gas guide frame (3) is horizontally arranged.

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