Gas check valve and mounting structure

Abstract

This utility model relates to a gas check valve and its installation structure, comprising: a valve body, a valve plate, a mounting bracket, rollers, and an elastic element. The valve body has through holes, and the valve plate corresponds one-to-one with each through hole. The mounting bracket is fixedly connected to the valve body, and the valve plate is rotatably connected to the mounting bracket. The rollers are rotatably connected to the mounting bracket. The rollers are used to block the valve plate when it is open. The elastic element is used to drive the valve plate to seal the through holes. The outer surface of the rollers is elastic. In this utility model, when the valve plate collides with the rollers, the rollers rotate to buffer the impact, reducing noise and vibration, reducing wear on the surfaces of the valve plate and rollers, and extending the service life of the rollers. The outer surface of the rollers is elastic, and when it collides with the valve plate, the outer surface undergoes elastic deformation, further reducing noise and vibration during the collision. The edge of the valve body is plate-shaped, which facilitates reducing the axial length occupied by the valve body during installation, shortening the distance between the two pipes, making the entire installation structure more compact, and reducing the floor space required.

Description

Technical Field

[0001] This utility model relates to the field of valves, and in particular to a gas check valve and its installation structure. Background Technology

[0002] Existing gas check valves consist of a valve body and a valve plate. The valve plate rotates relative to the valve body to control the opening and closing of the gas check valve. Existing valve plates and valve bodies have a limit mechanism to restrict the maximum opening angle of the valve plate. Both the existing limit mechanism and the valve plate are made of rigid materials (such as steel, aluminum, and other metals). During the limit operation, the two rigid bodies collide, resulting in significant noise and vibration, which can easily cause noise pollution and loosen fasteners such as screws. Utility Model Content

[0003] The present invention aims to solve the above problems by providing a gas check valve, which solves the problem of excessive noise and vibration generated by existing gas check valves when in the limit position.

[0004] A gas check valve includes: a valve body, a valve plate, a mounting bracket, a roller, and an elastic element. The valve body has a through hole, and the valve plate corresponds to the through hole. The mounting bracket is fixedly connected to the valve body, and the valve plate is rotatably connected to the mounting bracket. The roller is rotatably connected to the mounting bracket. The roller is used to block the valve plate when it is open. The elastic element is used to drive the valve plate to block the through hole. The outer surface of the roller is elastic.

[0005] Preferably, it further includes a mounting shaft, which is fixedly or rotatably connected to the mounting bracket, and the valve plate is fixedly connected to a connecting block on the side near the mounting shaft, and the connecting block is fitted onto the outside of the mounting shaft and rotatably connected to the mounting shaft.

[0006] Preferably, the elastic element is a torsion spring, the mounting bracket has a third groove formed on the side near the valve body, the torsion spring is located in the third groove and is fitted on the outside of the mounting shaft, and the two ends of the torsion spring are respectively fixedly connected to two adjacent valve plates; The mounting bracket has a second groove on the side near the valve body, and the connecting block is located in the second groove.

[0007] Preferably, the mounting bracket has a groove formed on the side away from the valve body, the roller is inserted into the groove, the outer side of the roller portion is located outside the groove, the rotation axis of the roller is parallel to the rotation axis of the valve plate, and the roller is made of an elastic material.

[0008] Preferably, it further includes a partition plate located in the second groove, the partition plate being located between the connecting blocks of the two valve plates, and the partition plate being made of polytetrafluoroethylene.

[0009] Preferably, the valve body has two through holes, and a partition is formed between the two through holes, and the mounting bracket is fixedly connected to the partition. It also includes a sealing groove and a first sealing ring. The valve body has a sealing groove that surrounds the outside of the through hole and is connected end to end. The first sealing ring is inserted into the sealing groove and fixed to the valve body. The valve plate contacts the sealing ring when closed.

[0010] An installation structure using the aforementioned gas check valve further includes pipes and a fixing mechanism. The valve body has plate-shaped edges and is located between two pipes with its two ends respectively attached to the ends of the two pipes. The fixing mechanism is used to fix the two pipes together.

[0011] Preferably, a flange is formed at the end of the pipe, and an annular protrusion is formed on the outer side of the valve body. The annular protrusion is located between the flanges of the two pipes and its two ends are respectively fitted to the flanges of the two pipes.

[0012] Preferably, a fourth groove is formed at the end of the flange away from the valve body. The fixing mechanism includes a clamping block, a bolt, and a nut. The clamping block has a hook that is inserted into the fourth groove. The two clamping blocks are in contact with each other. The bolt passes through the two clamping blocks and is threadedly connected to the nut to fix the clamping blocks.

[0013] Preferably, it further includes a second sealing ring and an outer ring. The outer side of the annular protrusion has a first annular groove. The second sealing ring is fitted outside the first annular groove. The outer ring is located outside the second sealing ring. The inner and outer sides of the second sealing ring are respectively fitted with the first annular groove and the outer ring. The outer ring has an opening in the radial direction.

[0014] This invention has the following advantages: when the valve plate collides with the roller, the roller rotates to buffer the impact, reducing noise and vibration, reducing wear on the valve plate and roller surfaces, and extending the service life of the roller; the outer surface of the roller is elastic, and when it collides with the valve plate, the outer surface undergoes elastic deformation, further reducing noise and vibration during the collision; the edge of the valve body is plate-shaped, which facilitates reducing the axial length occupied by the valve body during installation, making the distance between the two pipes shorter, making the entire installation structure more compact, and reducing the floor space occupied. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0016] Figure 1: A 3D view of a gas check valve; Figure 2 : A 3D view of the gas check valve after removing the valve plate; Figure 3 Rear view of a gas check valve; Figure 4 :exist Figure 3 Sectional view at point AA; Figure 5 : A three-dimensional view of the installation structure; Figure 6 : Front view of the installation structure; Figure 7 :exist Figure 6 Sectional view at point BB; Figure 8 :exist Figure 7 Sectional view at point C. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and examples: The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1: like Figures 1 to 4As shown, a gas check valve includes: a valve body 1, a valve plate 2, a mounting bracket 3, a roller 6, and an elastic element. The valve body 1 has a through hole 10, and the valve plate 2 corresponds to a through hole 10. The mounting bracket 3 is fixedly connected to the valve body 1, and the valve plate 2 is rotatably connected to the mounting bracket 3. The roller 6 is rotatably connected to the mounting bracket 3. The roller 6 is used to block the valve plate 2 when it is open. The elastic element is used to drive the valve plate 2 to block the through hole 10. The outer surface of the roller 6 is elastic. The roller 6 can be made entirely of elastic material, or it can be a rigid material with an outer sleeve or layer of elastic material.

[0020] like Figure 4 As shown, the airflow moves from left to right, driving the valve plate 2 to overcome the resistance of the elastic element and rotate towards the roller 6. The valve plate 2 stops blocking the through hole 10, and the airflow passes through the through hole 10 to the right side of the check valve. As the airflow speed increases, the valve plate 2 gradually rotates towards the roller 6 until the valve plate 2 collides with the roller 6, at which point the valve plate 2 opens to its maximum angle.

[0021] When valve plate 2 collides with roller 6, roller 6 rotates to buffer the impact, reducing noise and vibration. Rolling friction between valve plate 2 and roller 6 reduces wear on their surfaces. The rotation of roller 6 allows its outer surface, initially away from valve plate 2, to gradually move closer to it during repeated collisions, ensuring even wear and extending its service life. Furthermore, the elasticity of the outer surface of roller 6 during collisions with valve plate 2 further reduces noise and vibration.

[0022] Preferably, it also includes a mounting shaft 4, which is fixedly or rotatably connected to the mounting bracket 3. The valve plate 2 is fixedly connected to the connecting block 21 on the side near the mounting shaft 4. The connecting block 21 is fitted on the outside of the mounting shaft 4 and rotatably connected to the mounting shaft 4.

[0023] Preferably, the elastic element is a torsion spring 5, and the mounting bracket 3 has a third groove 32 formed on the side near the valve body 1. The torsion spring 5 is located in the third groove 32 and is fitted on the outside of the mounting shaft 4. The two ends of the torsion spring 5 are respectively fixedly connected to two adjacent valve plates 2. The torsion spring 5 occupies less space and is easy to arrange and install.

[0024] Preferably, the mounting bracket 3 has a second groove 31 formed on the side near the valve body 1, and the connecting block 21 is located in the second groove 31.

[0025] Preferably, a groove is formed on the side of the mounting bracket 3 away from the valve body 1, and the roller 6 is inserted into the groove. A portion of the outer surface of the roller 6 is located outside the groove. The rotation axis of the roller 6 is parallel to the rotation axis of the valve plate 2. The roller 6 is made of an elastic material, such as silicone or rubber. The roller 6 may have short shafts formed at both axial ends for inserting into the mounting bracket 3, or it may be as follows... Figure 4 The shown kit is mounted on the outside of the shaft (not shown in the figure) that is rotatably connected to the mounting bracket 3.

[0026] Preferably, the system further includes a partition 41 located in the second groove 31 between the connecting blocks 21 of the two valve plates 2. The partition 41 is made of polytetrafluoroethylene. The partition 41 separates the two connecting blocks 21 with opposite rotation directions, preventing the two connecting blocks 21 from contacting each other and reducing friction.

[0027] Preferably, such as Figures 1 to 3 As shown, the valve body 1 has two through holes 10, and a partition 12 is formed between the two through holes 10. The mounting bracket 3 is fixedly connected to the partition 12.

[0028] Preferably, the valve further includes a sealing groove 13 and a first sealing ring 14. The valve body 1 has a sealing groove 13, which surrounds the outside of the through hole 10 and is connected end to end. The first sealing ring 14 is inserted into the sealing groove 13 and fixed to the valve body 1. The valve plate 2 contacts the sealing ring 14 when closed. The sealing ring 14 improves the sealing performance of the valve plate 2 when closed and also reduces the impact of collision when the valve plate 2 contacts the sealing ring 14, thereby reducing noise and vibration.

[0029] Example 2: like Figures 1 to 8 As shown, an installation structure for the gas check valve described in Embodiment 1 further includes pipes 7 and a fixing mechanism. The valve body 1 has a plate-like edge and is located between two pipes 7, with both ends respectively abutting the ends of the two pipes 7. The fixing mechanism is used to fix the two pipes 7 together. Here, "plate-like" means that the edge of the valve body 1 is or nearly a flat plate. The plate-like edge of the valve body 1 reduces the axial length occupied by the valve body 1 during installation, shortens the distance between the two pipes 7, and makes the entire installation structure more compact, reducing the floor space required.

[0030] More preferably, the valve body 1 is or nearly a flat plate.

[0031] Preferably, a flange 71 is formed at the end of the pipe 7, and an annular protrusion 11 is formed on the outer side of the valve body 1. The annular protrusion 11 is located between the flanges 71 of the two pipes 7 and its two ends are respectively attached to the flanges 71 of the two pipes 7. The annular protrusion 11 is the edge of the valve body 1 or a part of the edge of the valve body 1.

[0032] Preferably, a fourth groove 710 is formed at the end of the flange 71 away from the valve body 1. The fixing mechanism includes clamping blocks 8, bolts 9, and nuts 91. The clamping blocks 8 have hooks 81 that insert into the fourth groove 710. The two clamping blocks 8 are in contact with each other. The bolts 9 pass through the two clamping blocks 8 and are threadedly connected to the nuts 91 to fix the clamping blocks 8. The two clamping blocks 8 clamp and fix the two flanges 71, and the two flanges 71 clamp and fix the central annular protrusion 11.

[0033] Preferably, the two pipes 7 are connected to multiple fixing mechanisms, such as... Figure 5 As shown.

[0034] Preferably, the system further includes a second sealing ring 15 and an outer ring 16. A first annular groove 110 is formed on the outer side of the annular protrusion 11. The second sealing ring 15 is fitted outside the first annular groove 110, and the outer ring 16 is located outside the second sealing ring 15. The inner and outer sides of the second sealing ring 15 are respectively fitted to the first annular groove 110 and the outer ring 16. The outer ring 16 has radially formed openings. The second sealing ring 15 is used to block the gap at the connection point of the two pipes 7, preventing gas from leaking out of the pipes 7; the outer ring 16 holds the second sealing ring 15 in place, maintaining its shape.

[0035] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A gas check valve, characterized in that, include: The valve body (1), valve plate (2), mounting bracket (3), roller (6) and elastic element are provided. The valve body (1) has a through hole (10). The valve plate (2) corresponds to the through hole (10). The mounting bracket (3) is fixedly connected to the valve body (1). The valve plate (2) is rotatably connected to the mounting bracket (3). The roller (6) is rotatably connected to the mounting bracket (3). The roller (6) is used to block the valve plate (2) when it is open. The elastic element is used to drive the valve plate (2) to block the through hole (10). The outer side of the roller (6) is elastic.

2. A gas check valve according to claim 1, characterized in that: It also includes a mounting shaft (4), which is fixedly or rotatably connected to the mounting bracket (3). The valve plate (2) is fixedly connected to the connecting block (21) on the side near the mounting shaft (4). The connecting block (21) is fitted on the outside of the mounting shaft (4) and rotatably connected to the mounting shaft (4).

3. A gas check valve according to claim 2, characterized in that: The elastic element is a torsion spring (5). The mounting bracket (3) has a third groove (32) formed on the side near the valve body (1). The torsion spring (5) is located in the third groove (32) and is fitted on the outside of the mounting shaft (4). The two ends of the torsion spring (5) are fixedly connected to two adjacent valve plates (2). The mounting bracket (3) has a second groove (31) formed on the side near the valve body (1), and the connecting block (21) is located in the second groove (31).

4. A gas check valve according to claim 1, characterized in that: The mounting bracket (3) has a groove on the side away from the valve body (1), the roller (6) is inserted into the groove, part of the outer side of the roller (6) is located outside the groove, the rotation axis of the roller (6) is parallel to the rotation axis of the valve plate (2), and the roller (6) is made of elastic material.

5. A gas check valve according to claim 1, characterized in that: It also includes a partition (41) located in the second groove (31) between the connecting blocks (21) of the two valve plates (2) and the partition (41) is made of polytetrafluoroethylene.

6. A gas check valve according to claim 1, characterized in that: The valve body (1) has two through holes (10), and a partition (12) is formed between the two through holes (10). The mounting bracket (3) is fixedly connected to the partition (12). It also includes a sealing groove (13) and a first sealing ring (14). The valve body (1) has a sealing groove (13) formed around the outside of the through hole (10) and connected end to end. The first sealing ring (14) is inserted into the sealing groove (13) and fixed to the valve body (1). The valve plate (2) contacts the sealing ring (14) when closed.

7. An installation structure using a gas check valve as described in any one of claims 1 to 6, characterized in that: It also includes pipes (7) and fixing mechanisms. The edge of the valve body (1) is plate-shaped. The valve body (1) is located between two pipes (7) and its two ends are respectively attached to the ends of the two pipes (7). The fixing mechanism is used to fix the two pipes (7) together.

8. The installation structure according to claim 7, characterized in that: A flange (71) is formed at the end of the pipe (7), and an annular protrusion (11) is formed on the outside of the valve body (1). The annular protrusion (11) is located between the flanges (71) of the two pipes (7) and its two ends are respectively attached to the flanges (71) of the two pipes (7).

9. The installation structure according to claim 8, characterized in that: The flange (71) has a fourth groove (710) formed at the end away from the valve body (1). The fixing mechanism includes a clamp (8), a bolt (9) and a nut (91). The clamp (8) has a hook (81) which is inserted into the fourth groove (710). The two clamps (8) are in contact with each other. The bolt (9) passes through the two clamps (8) and is threadedly connected to the nut (91) to fix the clamp (8).

10. An installation structure according to claim 9, characterized in that: It also includes a second sealing ring (15) and an outer ring (16). The outer side of the annular protrusion (11) has a first annular groove (110). The second sealing ring (15) is fitted outside the first annular groove (110). The outer ring (16) is located outside the second sealing ring (15). The inner and outer sides of the second sealing ring (15) are respectively fitted with the first annular groove (110) and the outer ring (16). The outer ring (16) has an opening formed radially.

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