Gas filter check valve

Abstract

The utility model relates to valve technical field, concretely relates to gas filter check valve, including valve body, the valve body both ends end portion detachable type installation has the valve cover, filter core is arranged in the valve body medium cavity channel, the filter core end surface with valve cover inner wall fixed connection, one way valve valve core, one way valve valve core sets up in the valve body medium cavity channel, input, input fixed mounting in valve body one side, output, output fixed mounting in valve body one side, output at least has one, output adopts the joint connection external pipeline, the utility model can possess the function of anti -reflux and filter, and the staff can arrange output according to actual pipeline layout, satisfy the demand of multi -branch gas supply or distributed gas -using scene, improve the applicability and system integration of valve under different working conditions.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a gas filter check valve. Background Technology

[0002] Gas pipelines are pipelines that transport gas (including natural gas, manufactured gas, and liquefied petroleum gas) from extraction sites or processing plants to urban gas distribution centers or industrial users; they are also called gas transmission pipelines. Valves are used in gas pipelines to open and close the pipeline, control the flow direction, and regulate and control the parameters (temperature, pressure, and flow rate) of the transported medium.

[0003] A check valve is an automatic valve whose core function is to allow fluid to flow in only one direction. Through an automatic valve disc closing mechanism, it blocks the reverse flow of gas and prevents back pressure from impacting upstream equipment.

[0004] However, in the face of increasingly complex pipeline system requirements, existing valves have fewer functional modules and a single outlet installation method, making it difficult to adapt to the requirements of pipelines under different working conditions. Summary of the Invention

[0005] To address the aforementioned shortcomings in the existing technology, this utility model provides a gas filter check valve, which solves the problems that existing valves have fewer functional modules and a single outlet installation method, making it difficult to adapt to the pipeline requirements of different working conditions.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A gas filter check valve includes a valve body, wherein valve covers are detachably installed at both ends of the valve body. A filter element is disposed within the central cavity channel of the valve body, and the end face of the filter element is fixedly connected to the inner wall of the valve cover; a one-way valve core is disposed within the central cavity channel of the valve body. The valve body has an input port, which is fixedly installed on one side of the valve body; and an output port, which is fixedly installed on one side of the valve body. There is at least one output port, and the output port can be connected to an external pipeline using a union joint.

[0007] In this way, when installing the pipes, the output port uses a union to connect to the external pipe, which can be quickly disassembled without welding. The input and output ports can be flexibly set according to the pipe layout requirements. After transportation begins, the fluid enters the filter element inside the valve body through the inlet. The filter element intercepts impurities carried by the fluid, effectively removing particulate matter, welding slag, and other foreign objects, preventing impurities from entering downstream equipment and causing blockages or wear. After being filtered by the filter element, the fluid flows to the check valve core and exits through the outlet. During the fluid flow process, the check valve core can prevent backflow. When the fluid pressure decreases or a backflow trend occurs, the check valve core will automatically close under the pressure of the medium or the action of the spring, ensuring the safe operation of the pipeline system. After transportation is stopped, valve covers are detachably installed at both ends of the valve body. The end face of the filter element is fixedly connected to the inner wall of the valve cover. The operator can remove the valve cover and take out the filter element fixedly connected to the valve cover to clean the filter element directly. With this structure, the valve body can have the functions of preventing backflow and filtering. The operator can flexibly arrange the output port according to the actual pipeline layout to meet the needs of multi-branch gas supply or distributed gas use scenarios, and improve the applicability of the valve under different working conditions and the system integration.

[0008] Furthermore, the inlet and outlet are respectively located on both sides of the valve body. The inlet and outlet, together with the central cavity channel of the valve body, form a Z-shaped channel. This allows the operator to set the corresponding outlet installation method according to the working conditions and adapt to different pipeline system requirements.

[0009] Furthermore, a connecting nut is fitted onto the outside of the output port, an elastic retaining ring is provided on the outside of the output port, and a stop sealing gasket is installed at the output port end, thereby enabling the output port to be flexibly connected to external pipelines, reducing the cost of maintaining the valve body pipeline.

[0010] Furthermore, a U-shaped elastic steel ring is fixedly connected to the end face of the filter element, and the middle part of the elastic steel ring is fixedly connected to the inner wall of the valve cover. This allows the operator to directly extract the filter element through the elastic steel ring, facilitating the cleaning of the filter element.

[0011] Furthermore, a filter element sealing gasket is fixedly installed on the end face of the filter element, thereby improving the sealing performance between the filter element and the valve body.

[0012] Furthermore, a valve core sealing ring is fixedly installed on the outside of the one-way valve core, and the valve core sealing ring can abut against the inner wall of the valve body, thereby improving the sealing performance between the one-way valve core and the valve body.

[0013] Furthermore, a valve cover sealing gasket is provided at the connection between the valve cover and the valve body, thereby improving the sealing performance between the valve cover and the valve body.

[0014] Furthermore, both the inner and outer surfaces of the valve body are electrophoretically coated with acrylic resin, and the valve body is made of aluminum alloy, thereby improving the corrosion resistance of the valve body. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of Embodiment 1 of the gas filter check valve of this utility model; Figure 2 This is a right-side structural schematic diagram of Embodiment 1 of the gas filter check valve of this utility model; Figure 3 This is a cross-sectional view of the valve core in Embodiment 1 of the gas filter check valve of this utility model. Figure 4 This is a cross-sectional view of Embodiment 2 of the gas filter check valve of this utility model; Figure 5 This is a cross-sectional view of Embodiment 3 of the gas filter check valve of this utility model; Figure 6 This is a cross-sectional view of Embodiment 4 of the gas filter check valve of this utility model; Reference numerals in the accompanying drawings: Valve body 1, valve cover 101, valve core sealing ring 301; Filter element 2, elastic steel ring 201, filter element sealing gasket 202; One-way valve core 3, valve core sealing ring 301; Input port 4; Output port 5, connecting nut 501, elastic retaining ring 502, stop sealing gasket 503. Detailed Implementation

[0016] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0018] Example 1: like Figures 1-3 As shown, the gas filter check valve of this utility model includes a valve body 1, with valve covers 101 detachably installed at both ends of the valve body 1; a filter element 2, which is disposed in the central cavity channel of the valve body 1, and the end face of the filter element 2 is fixedly connected to the inner wall of the valve cover 101; a one-way valve core 3, which is disposed in the central cavity channel of the valve body 1; an inlet 4, which is fixedly installed on one side of the valve body 1; and an outlet 5, which is fixedly installed on one side of the valve body 1. There is at least one outlet 5, and the outlet 5 can be connected to an external pipeline using a union joint.

[0019] In this way, when installing the pipe, the output port 5 is connected to the external pipe with a union, which can achieve quick disassembly and assembly without welding. The input port 4 and the output port 5 are flexibly set according to the pipe layout requirements. After transportation begins, the fluid enters the filter element 2 inside the valve body 1 through the inlet 4. The filter element 2 intercepts impurities carried by the fluid, effectively removing particulate matter, welding slag, and other foreign objects, preventing impurities from entering downstream equipment and causing blockage or wear. After being filtered by the filter element 2, the fluid flows to the check valve core 3 and is discharged through the outlet 5 after flowing out of the check valve core 3. During the fluid flow, the check valve core 3 can prevent backflow. When the fluid pressure decreases or a backflow trend occurs, the check valve core will automatically close under the medium pressure or spring action, ensuring the safe operation of the pipeline system. After transportation is stopped, valve covers 101 are detachably installed at both ends of valve body 1. The end face of filter element 2 is fixedly connected to the inner wall of valve cover 101. Operators can remove valve cover 101 and take out filter element 2 fixedly connected to valve cover 101 together, and directly clean filter element 2. With this structure, the valve body can have the functions of anti-backflow and filtration. Operators can flexibly arrange the output port according to the actual pipeline layout to meet the needs of multi-branch gas supply or distributed gas use scenarios, and improve the applicability of the valve under different working conditions and the system integration.

[0020] The inlet 4 and outlet 5 are respectively located on both sides of the valve body 1. The inlet 4, outlet 5 and the cavity channel of the valve body 1 together form a Z-shaped channel, so that the staff can set the corresponding outlet installation method according to the working conditions and adapt to different pipeline system requirements.

[0021] A connecting nut 501 is fitted on the outside of the output port 5, an elastic retaining ring 502 is provided on the outside of the output port 5, and a stop sealing gasket 503 is installed at the port of the output port 5. Thus, the output port 5 can be connected to an external pipeline in a flexible manner, reducing the cost of maintaining the valve body pipeline.

[0022] A U-shaped elastic steel ring 201 is fixedly connected to the end face of the filter element 2. The middle part of the elastic steel ring 201 is fixedly connected to the inner wall of the valve cover 101, so that the staff can directly remove the filter element 2 through the elastic steel ring 201, which is convenient for cleaning the filter element 2.

[0023] A filter element sealing gasket 202 is fixedly installed on the end face of the filter element 2, which can improve the sealing between the filter element 2 and the valve body 1.

[0024] A valve core sealing ring 301 is fixedly installed on the outside of the one-way valve core 3. The valve core sealing ring 301 can abut against the inner wall of the valve body 1, thereby improving the sealing performance between the one-way valve core 3 and the valve body 1.

[0025] A valve cover sealing gasket 102 is provided at the connection between the valve cover 101 and the valve body 1, which can improve the sealing performance between the valve cover 101 and the valve body 1.

[0026] The inner and outer surfaces of valve body 1 are coated with acrylic resin by electrophoresis, and valve body 1 is made of aluminum alloy, which can improve the corrosion resistance of valve body 1.

[0027] Example 2: like Figure 4 As shown, the other features of Example 2 are the same as those of Example 1, except that: A gas filter check valve includes a valve body 1, with a valve cover 101 detachably mounted on one end of the valve body 1; a filter element 2, which is disposed in the central cavity channel of the valve body 1, and the end face of the filter element 2 is fixedly connected to the inner wall of the valve cover 101; a one-way valve core 3, which is disposed in the central cavity channel of the valve body 1; an inlet 4, which is fixedly installed on one side of the valve body 1; and an outlet 5, which is fixedly installed on the end of the valve body 1 away from the valve cover 101, and the outlet 5 can be connected to an external pipeline using a union joint.

[0028] The inlet 4 and outlet 5 are respectively located on the side and end face of the valve body 1. The inlet 4 and outlet 5 together with the cavity channel of the valve body 1 form an L-shaped channel.

[0029] Example 3: like Figure 5 As shown, the other features of Example 3 are the same as those of Example 1, except that: A gas filter check valve includes a valve body 1, with valve covers 101 detachably mounted at both ends of the valve body 1; a filter element 2, which is disposed in the central cavity channel of the valve body 1, and the end face of the filter element 2 is fixedly connected to the inner wall of the valve cover 101; a one-way valve core 3, which is disposed in the central cavity channel of the valve body 1; an inlet 4, which is fixedly installed on one side of the valve body 1; and an outlet 5, which is fixedly installed on one side of the valve body 1 adjacent to the inlet 4, and the outlet 5 can be connected to an external pipeline using a union joint.

[0030] The inlet 4 and outlet 5 are located on the same side of the valve body 1. The inlet 4 and outlet 5 together with the cavity channel of the valve body 1 form a U-shaped channel.

[0031] Example 4: like Figure 6 As shown, the other features of Example 4 are the same as those of Example 1, except that: A gas filter check valve includes a valve body 1, with valve covers 101 detachably mounted at both ends of the valve body 1; a filter element 2, which is disposed in the central cavity channel of the valve body 1, and the end face of the filter element 2 is fixedly connected to the inner wall of the valve cover 101; a one-way valve core 3, which is disposed in the central cavity channel of the valve body 1; an inlet 4, which is fixedly installed on one side of the valve body 1; and two outlets 5, which are fixedly installed on the side of the valve body 1 away from the inlet 4, and the outlets 5 can be connected to external pipelines using a union.

[0032] The inlet 4 is located on one side of the valve body 1, and the two outlets 5 are located on the other side of the valve body 1, directly opposite the inlet 4. The inlet 4, outlets 5 and the cavity channel of the valve body 1 together form a Z-shaped double outlet channel.

[0033] In summary, compared with the prior art, the outstanding advantages of the present invention are: 1. The installation method of the outlet can be adjusted according to the actual working conditions to meet the needs of multi-branch gas supply or distributed gas use scenarios, and improve the applicability of the valve under different working conditions and the system integration. 2. Enables unidirectional fluid flow, effectively preventing backflow of the medium; 3. Equipped with high-efficiency filtration function to ensure the cleanliness and stable operation of the system; 4. The output port adopts a flexible connection, which facilitates disassembly, assembly, and subsequent maintenance; 5. Improve the sealing performance and corrosion resistance of the valve body.

[0034] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A gas filter check valve, characterized in that, include: Valve body (1), valve covers (101) are detachably installed at both ends of the valve body (1). The filter element (2) is disposed in the cavity channel of the valve body (1), and the end face of the filter element (2) is fixedly connected to the inner wall of the valve cover (101). One-way valve core (3), the one-way valve core (3) is disposed in the middle cavity channel of the valve body (1); Input port (4), the input port (4) is fixedly installed on one side of the valve body (1); Output port (5), the output port (5) is fixedly installed on one side of the valve body (1), there is at least one output port (5), and the output port (5) can be connected to an external pipe by a union.

2. The gas filter check valve as described in claim 1, characterized in that: The input port (4) and output port (5) are respectively located on both sides of the valve body (1), and the input port (4), output port (5) and the cavity channel of the valve body (1) together form a Z-shaped channel.

3. The gas filter check valve as described in claim 2, characterized in that: A connecting nut (501) is fitted on the outside of the output port (5), an elastic retaining ring (502) is provided on the outside of the output port (5), and a stop sealing gasket (503) is installed at the port of the output port (5).

4. The gas filter check valve as described in claim 1, characterized in that: The filter element (2) is fixedly connected to a U-shaped elastic steel ring (201) at its end face, and the middle part of the elastic steel ring (201) is fixedly connected to the inner wall of the valve cover (101).

5. The gas filter check valve as described in claim 1, characterized in that: The filter element (2) is fixedly installed with a filter element sealing gasket (202) on its end face.

6. The gas filter check valve as described in claim 1, characterized in that: A valve core sealing ring (301) is fixedly installed on the outside of the one-way valve core (3), and the valve core sealing ring (301) can abut against the inner wall of the valve body (1).

7. The gas filter check valve as described in claim 1, characterized in that: A valve cover sealing gasket (102) is provided at the connection between the valve cover (101) and the valve body (1).

8. The gas filter check valve as described in claim 7, characterized in that: The valve body (1) has an acrylic resin coating on both its inner and outer surfaces by electrophoresis.

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