Gas valve air inlet filtering structure

Abstract

The utility model relates to a kind of gas valve's air inlet filtering structure, it includes valve body, sealing ring, air inlet connector and filter screen, valve body is provided with air inlet, the mouth of air inlet is provided with annular recessed step, filter screen has recessed part and the supporting edge portion being set around the mouth of recessed part, recessed part is placed in air inlet, supporting edge portion is pressed in recessed step, sealing ring is pressed the supporting edge portion, the air inlet connector is connected with valve body and presses sealing ring. By setting filter screen at air inlet, it can directly and effectively intercept the dust, rust and other solid impurities carried in gas, prevent it from entering the inside of gas valve. This fundamentally avoids the risk that impurities block the precision gas hole inside valve body or wear moving parts, so as to ensure the stability and reliability of gas valve long-term work, significantly prolong the service life of gas valve, reduce maintenance frequency and cost.

Description

Technical Field

[0001] This utility model relates to the field of gas valves, and in particular to an air intake filter structure for a gas valve. Background Technology

[0002] The gas valve is an important component of a gas stove. The gas stove controls the flow of gas by controlling the gas valve. Currently, there are two most common ways to input gas: through pipelines and through gas cylinders. However, regardless of whether it is through pipelines or gas cylinders, impurities such as dust and rust will still exist in the gas. These two are the most common gas impurities. Over time, these impurities will clog the gas valve's internal pores, affecting the normal use of the gas valve. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned problems. We provide an air intake filter structure for a gas valve. This filter structure is installed at the air intake of the gas valve and can trap impurities in the gas.

[0004] To achieve the above objectives, this utility model provides an air intake filter structure for a gas valve, which includes a valve body, a sealing ring, an air intake connector, and a filter screen. The valve body is provided with an air intake port, and an annular concave step is provided at the edge of the air intake port. The filter screen has a recessed portion and a support edge provided around the edge of the recessed portion. The recessed portion is placed in the air intake port, and the support edge is pressed against the concave step. The sealing ring presses against the support edge. The air intake connector is connected to the valve body and presses against the sealing ring.

[0005] In one or more embodiments, the recess has a bottom surface and a side surface, the bottom surface being a planar structure and the side surface being annular and in close contact with the inner wall of the air inlet.

[0006] In one or more embodiments, the support edge is ring-shaped and is fixed together with the sealing ring.

[0007] In one or more embodiments, the air intake connector has an annular protrusion that engages with and presses against the sealing ring.

[0008] In one or more embodiments, the air intake connector is fixed to the valve body by screws, the air intake connector has a mounting hole for the screw to pass through, and the valve body has a threaded hole for connecting with the screw.

[0009] In one or more embodiments, the filter screen is a stainless steel filter screen.

[0010] Compared with the prior art, the advantages of this invention are: by installing a filter screen at the air inlet, it can directly and effectively trap solid impurities such as dust and rust carried in the gas, preventing them from entering the gas valve. This fundamentally avoids the risk of impurities clogging the precision air holes inside the valve body or wearing down moving parts, thereby ensuring the long-term stability and reliability of the gas valve, significantly extending its service life, and reducing maintenance frequency and costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the air intake filter structure of the gas valve in this application; Figure 2 for Figure 1 A structural diagram from another angle; Figure 3 This is a cross-sectional view of the filter screen and sealing ring of this application. Detailed Implementation

[0012] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0013] See appendix Figure 1-3 This application provides an air intake filter structure for a gas valve, comprising a valve body 1, a sealing ring 2, an air intake connector 3, and a filter screen 4. The valve body 1 has an air intake port 5, with an annular recessed step 6 at the edge of the intake port 5. The filter screen 4 has a recessed portion and a support edge 43 surrounding the edge of the recessed portion. The recessed portion is placed in the air intake port 5, and the support edge 43 is pressed against the recessed step 6. The sealing ring 2 presses against the support edge 43. The air intake connector 3 is connected to the valve body 1 and presses against the sealing ring 2. By setting the filter screen 4 and installing it on the recessed step 6 of the air intake port 5, and then using the sealing ring 2 and the air intake connector 3 for compression sealing, a stable and reliable filter assembly is constructed. This structure can effectively intercept solid impurities such as dust and rust in the gas, preventing impurities from entering the gas valve, avoiding blockage of the gas path or wear of moving parts within the valve body, thereby improving the operational reliability of the gas valve and extending its service life.

[0014] The recessed portion has a bottom surface 41 and a side surface 42. The bottom surface 41 is a planar structure, and the side surface 42 is annular and fits tightly against the inner wall of the air inlet 5. This structure makes the installation of the filter screen 4 more stable and fits more tightly, which can prevent gas or impurities from bypassing the filter screen 4 through the side gap, ensuring that all intake air is effectively filtered, improving filtration efficiency and sealing.

[0015] The support edge 43 is ring-shaped and is fixed together with the sealing ring 2, forming a pre-assembled unit between the filter screen 4 and the sealing ring 2. This facilitates assembly and enhances the bonding stability between the sealing ring 2 and the filter screen 4. The support edge 43 can be fixed to the sealing ring by adhesive. Alternatively, one side of the sealing ring can be heated to a molten state, and then the support edge 43 can be joined to the molten sealing ring. After the sealing ring cools, the support edge 43 can be bonded together.

[0016] The air inlet connector 3 has an annular protrusion 7, which engages with and presses against the sealing ring 2. The annular protrusion 7 also engages with and presses against the sealing ring 2 on the concave step 6 of the valve body 1. This not only enhances the sealing performance between the air inlet connector 3 and the valve body 1, but also makes the pressure distribution more uniform, ensuring that the sealing ring 2 can stably press against the support edge 43 of the filter screen, thereby improving the sealing reliability of the overall structure.

[0017] The air intake connector 3 is fixed to the valve body 1 by screws. The air intake connector 3 has a mounting hole 8 for the screw to pass through, and the valve body 1 has a threaded hole 9 for connecting with the screw. The air intake connector 3 and the valve body 1 are fixed by screw connection. The structure is simple and reliable, easy to disassemble and maintain, and the threaded connection provides a stable locking force.

[0018] The filter screen 4 is a stainless steel filter screen. The filter screen 4 is made of stainless steel material, which has excellent corrosion resistance, high temperature resistance and structural strength. It can be used for a long time in a gas environment and is not easy to rust or deform.

[0019] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.

Claims

1. An air intake filter structure for a gas valve, characterized in that: The valve body (1), sealing ring (2), air inlet connector (3), and filter screen (4) are included. The valve body (1) is provided with an air inlet (5). An annular concave step (6) is provided at the edge of the air inlet (5). The filter screen (4) has a recessed part and a support edge (43) provided around the edge of the recessed part. The recessed part is placed in the air inlet (5). The support edge (43) is pressed on the concave step (6). The sealing ring (2) presses on the support edge (43). The air inlet connector (3) is connected to the valve body (1) and presses on the sealing ring (2).

2. The gas inlet filter structure of a gas valve according to claim 1, characterized in that: The recessed portion has a bottom surface (41) and a side surface (42). The bottom surface (41) is a planar structure, and the side surface (42) is annular and closely attached to the inner wall of the air inlet (5).

3. The gas inlet filter structure of a gas valve according to claim 2, characterized in that: The support edge (43) is ring-shaped and is fixed together with the sealing ring (2).

4. The air intake filter structure of a gas valve according to any one of claims 1-3, characterized in that: The air intake connector (3) has an annular protrusion (7), which engages with the concave step (6) and presses against the sealing ring (2).

5. The gas valve intake filter structure according to any one of claims 1-3, characterized in that: The air inlet connector (3) is fixed to the valve body (1) by screws. The air inlet connector (3) has an installation hole (8) for the screw to pass through, and the valve body (1) has a threaded hole (9) for connecting with the screw.

6. The gas valve intake filter structure according to any one of claims 1-3, characterized in that: The filter screen (4) is a stainless steel filter screen.

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