Gas valve

Abstract

The gas valve comprises a valve seat and a filter screen assembly, the filter screen assembly can be inserted into a limiting seat through an opening, and the peripheral side wall of the filter screen assembly is limited through a first limiting wall and a second limiting wall of the limiting seat. And the supporting piece comprises a clamping part located on the top end wall of the filter screen assembly and a limiting connection part between the clamping part, so that the filter screen assembly cannot be separated from the inner cavity, the installation is convenient and reliable, and the installation flexibility of the filter screen assembly is relatively improved.

Description

Technical Field

[0001] The utility model relates to the field of control technology, in particular to a gas valve. Background Art

[0002] Gas valves are usually equipped with a filter screen at the fluid inlet or outlet. The filter screen is inserted into the groove from the side of the valve body and then locked and fixed by the end cover. In other words, the filter screen at the inlet or outlet of the current gas valve needs to be locked and fixed by the end cover, and the installation is limited by the end cover, and the installation flexibility is poor.

[0003] How to improve the installation flexibility of the filter is a technical problem that needs to be solved urgently by technicians in this field. Utility Model Content

[0004] The utility model aims to provide a gas valve which is convenient to install.

[0005] An embodiment of the present application provides a gas valve, including a valve seat and a filter assembly, the valve seat is provided with a limit seat, the filter assembly includes a filter and a support member, the filter is fixedly connected or limit-connected to the support member, the valve seat is provided with an opening, the filter assembly can be inserted into the limit seat from the opening, the limit seat includes a clamping portion, a first limit wall and a second limit wall, the first limit wall and the second limit wall limit the peripheral side wall of the filter assembly, the support member includes a clamping portion located on the top end wall of the filter assembly, and the clamping portion is limit-connected to the clamping portion.

[0006] The filter screen assembly in the embodiment of the present application can be inserted into the limit seat through the opening, and the peripheral side wall of the filter screen assembly is limited by the first limit wall and the second limit wall of the limit seat, and the support member includes a limiting connection between the clamping part located on the top wall of the filter screen assembly and the clamping part, so that the filter screen assembly cannot fall out of the inner cavity, the installation is convenient and reliable, and the installation flexibility of the filter screen assembly is relatively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A three-dimensional schematic diagram of a gas valve in an embodiment provided by the utility model;

[0008] Figure 2 for Figure 1 3D schematic diagram of the middle valve seat;

[0009] Figure 3 for Figure 2 An enlarged schematic diagram of point A in the valve seat;

[0010] Figure 4 for Figure 2 A partial cross-sectional view of the valve seat;

[0011] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the valve seat is shown;

[0012] Figure 6 This is a schematic diagram of the process of installing the filter screen assembly of the utility model in the valve seat;

[0013] Figure 7 for Figure 6 The enlarged schematic diagram at C in the middle;

[0014] Figure 8 for Figure 1 A three-dimensional schematic diagram of a filter assembly in a gas valve shown;

[0015] Fig. 9 for Figure 8 Another side view of the filter assembly is shown.

[0016] in, Figures 1 to 9 middle:

[0017] 1 filter assembly; 10 support member; 100 support frame; 101 first reinforcing rib; 102 second reinforcing rib; 103 clamping portion; 104 positioning hole; 105 first fixing lug; 106 second fixing lug; 107 bending portion; 108 clamping portion; 11 filter; 111 first filter area; 112 second filter area; 113 third filter area;

[0018] 2 valve seat; 200 limiting seat; 201 first convex portion; 2011 end face; 212 second convex portion; 202 bottom wall; 2021 limiting step surface; 203 first vertical wall; 2031 first limiting wall; 204 second vertical wall; 2041 second limiting wall; 2032 first supporting surface; 2042 second supporting surface; 205 card table; 206 inner cavity; 207 peripheral wall; 212 bottom wall; 208 first lug; 2081 first mounting hole; 209 positioning seat; 210 second lug; 211 second mounting hole; 2A inlet connection portion; 2B outlet connection portion. DETAILED DESCRIPTION

[0019] In order to make those skilled in the art better understand the technical solution of the present application, the present application is further described in detail below. The present utility model embodiment takes the gas valve as an example to introduce the technical solution and technical effect, and of course the gas valve can also be other types of valves.

[0020] Please refer to Figures 1 to 9 , Figure 1 A three-dimensional schematic diagram of a gas valve in an embodiment provided by the utility model; Figure 2 for Figure 1 3D schematic diagram of the middle valve seat; Figure 3 for Figure 2 An enlarged schematic diagram of point A in the valve seat; Figure 4 for Figure 2 A partial cross-sectional view of the valve seat; Figure 5 for Figure 3 The enlarged schematic diagram of point B in the valve seat is shown; Figure 6 This is a schematic diagram of the process of installing the filter screen assembly of the utility model in the valve seat; Figure 7 for Figure 6 The enlarged schematic diagram at C in the middle; Figure 8 for Figure 1 A three-dimensional schematic diagram of a filter assembly in a gas valve shown; Fig. 9 for Figure 8 Another side view of the filter assembly is shown. The dotted arrow in the figure indicates the flow direction of the liquid.

[0021] In the embodiment of the present application, the gas valve includes a valve seat 2 and a filter assembly 1, and the outer wall of the valve seat 2 has an inlet connection portion 20A and an outlet connection portion 20B. The inlet connection portion 20A is used to connect to an external liquid inlet pipeline, and the outlet connection portion 20B is used to connect to an external liquid outlet pipeline. The valve seat 2 has an inner cavity 206 inside, and an opening 20C is provided on one side of the inner cavity 206. The valve body can be installed at the position of the opening 20C, and the valve body is not shown in the figure. A first lug 208 can be provided on the circumference of the valve seat 2, and a first mounting hole 2081 is provided on the first lug for fixed connection with the valve body. The first mounting hole can be a threaded hole, and the valve body is connected to the first mounting hole 2081 by components such as screws or bolts. For a gas valve, there are many parts, so the inner cavity 206 of the valve seat 2 can also be provided with a positioning seat 209 and other supporting components, and the circumferential wall of the positioning seat 209 is provided with a second lug 210, and the second lug 210 is provided with a second mounting hole 211 for installing and fixing corresponding parts.

[0022] The filter assembly 1 can be inserted into the inner cavity 206 from the opening 20C, that is, before the valve body is assembled on the valve seat 2, the filter assembly 1 is installed inside the inner cavity 206. The inlet connection part forms an inlet port on the peripheral wall of the inner cavity 206, and the outlet connection part forms an outlet port on the peripheral wall of the inner cavity 206. This application takes the filter assembly 1 located on the inlet port side of the inlet connection part as an example to continue to introduce the technical solution. Of course, the limit seat 200 can also be set on the outlet port side of the outlet connection part, or the limit seat 200 can be set on both the inlet port and the outlet port.

[0023] The communication opening also includes a mounting surface, and the limiting seat 200 includes a clamping portion, a first limiting wall 2031 and a second limiting wall 2041, and the first limiting wall 2031 and the second limiting wall 2041 limit the peripheral side wall of the filter assembly 1. The top end wall of the support member 10 of the filter assembly 1 has a clamping portion 103, and the clamping portion 103 is limitedly connected to the clamping portion.

[0024] The filter screen assembly 1 in the embodiment of the present application can be inserted into the limiting seat 200 through the opening, and the peripheral side wall of the filter screen assembly 1 is limited by the first limiting wall 2031 and the second limiting wall 2041 of the limiting seat 200, and the limiting connection between the snap-fitting part 103 and the snap-fitting part makes it impossible for the filter screen assembly 1 to escape from the inner cavity 206. The installation is convenient and reliable, and the installation flexibility of the filter screen assembly 1 is relatively improved.

[0025] The liquid flow of the inlet connection part flows into the inner cavity 206 through the filter mesh assembly 1 or the liquid flow of the inner cavity 206 flows to the outlet connection part through the filter mesh assembly 1 .

[0026] When the filter assembly 1 is installed on the side of the inlet port (correspondingly, the stopper is located on the side of the inlet port), the liquid in the inlet connection portion 12A flows along its internal pipeline to the inlet port, and then flows into the inner cavity 206 after being filtered by the filter assembly 1. Of course, when the filter assembly 1 is installed on the side of the outlet port (correspondingly, the stopper is located on the side of the outlet port), the liquid in the inner cavity 206 flows to the inner pipeline of the outlet connection portion 12B after being filtered by the filter assembly 1.

[0027] In the embodiment of the present application, along the insertion direction, the filter assembly 1 includes a top end wall and a bottom end wall. Figure 1 As shown, the inner cavity 206 includes a peripheral wall 207 and a bottom wall 202, and the bottom end wall of the filter assembly 1 is supported on the bottom wall of the inner cavity 206. The positioning seat 209 protrudes from the bottom wall 202 of the inner cavity 206, and the limiting seat 200 is located between the peripheral wall 207 of the inner cavity and the positioning seat 209. The support member 10 includes a clamping portion 108 arranged opposite to the clamping portion 103, and the clamping portion 108 is arranged on the bottom end wall. The transition area between the bottom wall 202 and the positioning seat 209 abuts against the clamping portion 108. The transition area may include a step surface, and the clamping portion 108 is the bottom end wall of the support member 10, and the bottom end wall abuts against the step surface and is restricted from moving toward the positioning seat 209.

[0028] The bottom end wall of the filter assembly 1 is supported on the bottom wall of the inner cavity 206, and the two can be directly or indirectly abutted. The snap-fit ​​portion 103 is located on the top wall and protrudes toward the inlet port. In the embodiment of the present application, the snap-fit ​​portion includes a first protrusion 201 protruding from the peripheral wall 207, and the snap-fit ​​portion 103 protrudes toward the first protrusion 201, and the snap-fit ​​portion 103 is snap-fitted to the side of the first protrusion 201 away from the opening. That is, the snap-fit ​​portion 103 and the first protrusion 201 are snap-fitted. The snap-fit ​​portion 103 can be snapped under the first protrusion 201, so as to prevent the filter assembly 1 from slipping out of the inner cavity 206 in the opposite direction to the insertion. This article defines the side of the first protrusion 201 facing the bottom wall 202 as the bottom. There can be a certain pre-tightening force between the snap-fit ​​portion 103 and the first protrusion 201 to ensure that the two are locked reliably. The clamping portion 103 may be a component with deformation capability. During the insertion process, the clamping portion 103 may be deformed under force to meet the installation space requirement. When the filter assembly 1 is installed in place, the clamping portion 103 returns to its initial state and can be clamped under the first protrusion 201 .

[0029] In one embodiment, the clamping portion 103 may be an elastic hook, and the hook may be a non-enclosed structure, that is, the hook has an opening, and the opening faces upward. During installation, the hook can contact and deform with the inner wall of the inner cavity 206, and when the filter assembly 1 is inserted into place, the hook extends under the first protrusion 201 to prevent the filter assembly 1 from falling out in the reverse direction.

[0030] As shown in the figure, the number of hooks on the filter assembly 1 can be two, of course, the number of hooks can also be one or more than three, as long as the filter assembly 1 can be reliably hooked. In this embodiment, the clamping portion 103 is in the form of a hook, which occupies a relatively small space and has a relatively high hooking reliability.

[0031] The hook may be a metal hook, which has a relatively strong deformation ability and a relatively high strength in use.

[0032] The shape of the clamping portion 103 is not limited to the above-mentioned hook form, and can also be other elastic protrusions, or a clamping groove structure. Correspondingly, the peripheral wall 207 is provided with a clamping block, and the clamping block cooperates with the clamping groove to realize the clamping cooperation of the filter screen assembly 1, so as to realize the clamping fixation of the filter screen assembly 1 and the valve seat.

[0033] After the filter assembly 1 in the embodiment of the present application is installed, its own clamping portion 103 cooperates with the clamping portion inside the valve seat to limit the position, so that the filter assembly 1 cannot escape from the inner cavity 206. The installation and fixation can be completed without cooperating with other components in the gas valve. The installation is convenient and reliable.

[0034] In the embodiment of the present application, the hole wall 205 surrounding the inlet port or the outlet port partially extends toward the inner cavity to form the first protrusion 201, so that the first protrusion 201 can be formed by the same hole processing process as the hole wall 205, the processing process is simple, and the first protrusion 201 and the hole wall 205 have the same inner diameter, which is beneficial to reduce the resistance to the fluid.

[0035] In the embodiment of the present application, the top wall of the support member 10 is further provided with a bending portion 107, which is bent toward the side where the clamping portion 103 is provided, and the bending portion 107 has a positioning hole 104. The first protrusion 201 is further provided with a second protrusion 212 extending radially, and the second protrusion 212 extends toward the opening direction. During the assembly of the filter assembly 1, the second protrusion 212 is inserted into the interior of the positioning hole 104 to guide the installation. That is to say, when the filter assembly 1 is assembled, the filter assembly 1 not only slides downward under the limitation of the first limiting wall 2031 and the second limiting wall 2041, but also the second protrusion 212 is partially inserted into the interior of the positioning hole 104, which can also play a role in guiding the movement of the filter assembly 1.

[0036] In a specific embodiment, a first vertical wall 203 and a second vertical wall 204 are further provided on both sides of the first convex portion 201, the first vertical wall 203 and the second vertical wall 204 are both connected to the peripheral wall 207 and the bottom wall 212, the first limiting wall 2031 is located on the first vertical wall 203, the second limiting wall 2041 is located on the second vertical wall 204, the first vertical wall 203 and the second vertical wall 204 also have a supporting surface for supporting the filter assembly 1, specifically, the first vertical wall 203 has a first supporting surface 2032, the second vertical wall 204 has a second supporting surface 2042, and the filter assembly 1 is supported on the first supporting surface 2032 and the second supporting surface 2042. The first supporting surface 2032 and the second supporting surface 2042 are located between the first limiting wall 2031 and the second limiting wall 2041.

[0037] In this embodiment, the first support surface 2031 and the second support surface 2042 can provide good support for the filter assembly 1, which is beneficial to improving the fixing reliability of the filter assembly 1. The support surface can be an inclined surface to increase the flow area of ​​the filter assembly 1.

[0038] In the embodiment of the present application, the transition area also includes a limiting step surface 2021, the limiting step surface 2021 is away from the positioning seat 209, and the limiting step surface 2021 abuts against the bottom end wall of the support member 10 to limit the displacement of the bottom end wall in the direction away from the inlet port. Here, the filter assembly is set on the side of the inlet port as an example. When the filter assembly 1 is inserted, the bottom end wall of the support member 10 is supported on the bottom wall of the inner cavity 206, and the limiting step surface 2021 can limit the displacement of the bottom end wall. The hook on the top end wall is pressed into the inlet port and forms a reverse anti-slipping with the first protrusion 201. The limiting step surface 2021 can further improve the reliability of the installation of the filter assembly 1.

[0039] Please refer to Figure 6 , Figure 6 Schematic diagrams of the status of the filter assembly 1 at three moments during the installation process, wherein the S1 state is a process in which the clamping portion 103 of the filter assembly 1 abuts against the end surface 2011 of the first protrusion 201 and slides down along the end surface 2011, the S2 state is a schematic diagram of the status in which the second protrusion 212 cooperates with the positioning hole 104, the filter assembly 1 continues to slide down and the clamping portion 103 is compressed and deformed, and S3 is a schematic diagram of the status in which the filter assembly 1 slides into place, the clamping portion 103 slides under the first protrusion 201 and hooks with the first protrusion 201, and the filter assembly 1 cannot fall out.

[0040] In the embodiment of the present application, the limit seat 200 is tilted relative to the positioning seat 209, and the inclination of the filter assembly 1 is adapted to the inclination of the limit seat 200, and the inclination angle ranges from 30° to 60°. The above-mentioned support surface is an inclined surface, and the support surface has a predetermined inclination angle with the axial direction of the inlet port. In other words, the support surface is not perpendicular to the axial direction of the inlet port, so that after the filter assembly 1 is installed, the filter assembly 1 is relatively tilted with the axial direction of the inlet port, which is conducive to expanding the area of ​​the filter and reducing the resistance of the filter to the fluid.

[0041] Among them, the inclination angle range between the supporting surface and the axial direction of the inlet port is 30° to 60° (including the endpoints), such as 30°, 40°, 50° and 60°. Of course, the inclination angle range can be any value between 30° and 60°, and this article will not give examples one by one.

[0042] The filter screen assembly 1 with an inclination angle within this range has a relatively large filtration area and a relatively small resistance to the fluid.

[0043] In an embodiment of the present application, the support member 10 and the filter screen 11 are integrally formed or fixedly connected or limit-connected. The support member 10 can be made of metal, plastic or other materials. Usually, the filter screen assembly 1 has a certain corrosion resistance, so the support member 10 and the filter screen 11 can both be made of materials with good corrosion resistance. The support member 10 includes a support frame 100, and the support frame 100 is integrally formed or fixedly connected with the filter screen 11. The support frame 100 is located in the circumference of the filter screen 11, and the clamping portion 103 is located on the support frame 100. The clamping portion 103 is arranged on the support frame 100, and the support frame 100 is directly or indirectly in contact with the above-mentioned two support surfaces.

[0044] In some embodiments, the support frame 100 further has a fixing member on the side away from the clamping portion 103, and the filter screen 11 is fixedly connected to the support frame 100 through the fixing member; the support frame 100 and the filter screen 11 can be detachably connected through the fixing member, for example, fixedly connected by screws or buckles or lugs, so as to facilitate the replacement of the filter screen 11. The figure shows that the fixing member includes a first fixing lug 105 and a second fixing lug 106, and the filter screen 11 is fixed to the support frame through the first fixing lug 105 and the second fixing lug 106. Of course, the support frame 100 and the filter screen 11 can also be fixedly connected by welding or bonding.

[0045] In some embodiments, the support member 10 further includes at least one reinforcing rib, both ends of which are connected to the support frame 100, and the filter screen 11 is at least partially connected to the reinforcing rib. The figure shows a specific arrangement of the reinforcing ribs, wherein the reinforcing ribs include a first reinforcing rib 101 and a second reinforcing rib 102, wherein the first reinforcing rib 101 and the second reinforcing rib 102 extend in a perpendicular direction, and the filter screen 11 is roughly divided into three areas: a first filter area 111, a second filter area 112, and a third filter area 113.

[0046] The reinforcing ribs can improve the support of the middle area of ​​the filter screen 11, and the arrangement of the reinforcing ribs is not limited to the description in this article.

[0047] For other structures of the gas valve, please refer to the prior art, which will not be described in detail in this article.

[0048] The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", etc., are only referenced to the directions of the drawings. Therefore, the directional terms used are for better and clearer description and understanding of the embodiments of the present invention, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0049] In the description of the embodiments of the present invention, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0050] In the embodiment of the present invention, "or / and" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0051] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A gas valve, characterized in that: It includes a valve seat and a filter assembly, the valve seat is provided with a limit seat, the filter assembly includes a filter and a support member, the filter is fixedly connected or limit-connected to the support member, the valve seat is provided with an opening, the filter assembly can be inserted into the limit seat from the opening, the limit seat includes a clamping portion, a first limit wall and a second limit wall, the first limit wall and the second limit wall limit the peripheral side wall of the filter assembly, the support member includes a clamping portion located on the top end wall of the filter assembly, and the clamping portion is limit-connected to the clamping portion.

2. The gas valve according to claim 1, characterized in that: The valve seat has an inner cavity, and the valve seat also includes a positioning seat, which protrudes from the bottom wall of the inner cavity. The limit seat is located between the peripheral wall of the inner cavity and the positioning seat. The support member includes a clamping portion arranged opposite to the clamping portion, and the transition area between the bottom wall and the positioning seat abuts against the clamping portion.

3. The gas valve according to claim 2, characterized in that: The limiting seat is located at one side of the inlet port of the inlet connection part, and / or the limiting seat is located at one side of the outlet port of the outlet connection part, the inlet port is located at the peripheral wall, and the outlet port is located at the peripheral wall.

4. The gas valve according to claim 2, characterized in that: The clamping portion includes a first convex portion protruding from the peripheral wall, the clamping portion protrudes toward the first convex portion, and the clamping portion is clamped at a side of the first convex portion away from the opening.

5. The gas valve according to claim 4, characterized in that: The gas valve also includes a valve body, which has an inlet connection part and an outlet connection part. The inlet port of the inlet connection part is located on the peripheral wall, and the outlet port of the outlet connection part is located on the peripheral wall. The hole wall surrounding the inlet port or the outlet port partially extends toward the inner cavity to form the first convex part.

6. The gas valve according to claim 5, characterized in that: The top end wall of the support member is also provided with a bending portion, which is bent toward a side where the clamping portion is provided, and the bending portion has a positioning hole. The surface of the first protrusion facing the opening is also provided with a radially extending second protrusion. During the assembly process of the filter assembly, the second protrusion is inserted into the positioning hole to guide the installation.

7. The gas valve according to claim 5, characterized in that: A first vertical wall and a second vertical wall are also provided on both sides of the first protrusion, the first vertical wall and the second vertical wall are both connected to the peripheral wall and the bottom wall, the first limiting wall is located on the first vertical wall, the second limiting wall is located on the second vertical wall, and the first vertical wall and the second vertical wall also have a supporting surface for supporting the filter assembly.

8. The gas valve according to claim 5, characterized in that: The clamping part is an elastic hook.

9. The gas valve according to any one of claims 2, 4 to 8, characterized in that: The transition area comprises a limiting step surface, the limiting step surface is away from the positioning seat, the locking portion is located at the bottom end wall of the support member, and the locking portion abuts against the limiting step surface.

10. The gas valve according to claim 1, characterized in that: The support member includes a support frame, the support frame is located in the circumference of the filter screen, the clamping portion is located on the support frame, and the support frame also has a fixing member on a side away from the clamping portion, and the filter screen is fixedly connected to the support frame through the fixing member; Alternatively, the support member includes a support frame and at least one reinforcing rib, the support frame is located in the circumference of the filter screen, the clamping portion is located on the support frame, both ends of the reinforcing rib are connected to the support frame, and the filter screen is at least partially connected to the reinforcing rib; Alternatively or / and, the engaging portion is a slot arranged on the circumferential wall of the inner cavity of the valve seat, the engaging portion protrudes toward the slot, and the engaging portion is engaged with the slot wall of the slot.

11. The gas valve according to any one of claims 2, 4 to 8, characterized in that: The limiting seat is tilted relative to the positioning seat, the inclination of the filter assembly is matched with the inclination of the limiting seat, and the inclination angle range of the limiting seat relative to the positioning seat is 30° to 60°.

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