A composite exhaust valve

Abstract

The utility model discloses a composite exhaust valve, it includes valve body, and the lower part of valve body is equipped with the connecting pipe orifice, the upper part of valve body is connected with exhaust valve upper cover, and the upper end between exhaust valve upper cover and valve body is equipped with sealing washer, exhaust valve screen is also installed in exhaust valve upper cover, and the inner chamber of valve body is equipped with the float ball, and the lateral exhaust component that communicates with the inner chamber of valve body is connected to the side portion of valve body, the inner chamber of valve body is equipped with the bracket cylinder that can slide up and down, and the bracket cylinder has the inner hole that passes through up and down, and the float ball is located the inner hole upper portion of bracket cylinder, the utility model discloses can fast and accurate make the float ball contact sealing element to realize fast closing, and has the advantages such as closing quick and good sealing effect.

Description

Technical Field

[0001] This utility model relates to an exhaust valve used in equipment, specifically a composite exhaust valve. Background Technology

[0002] An exhaust valve is a device installed on equipment to control the emission of gases. Based on their operating principles, they can be categorized into various types, including float-type exhaust valves, spring-loaded exhaust valves, thermal exhaust valves, vacuum exhaust valves, and combination exhaust valves. Currently, a typical float-type exhaust valve consists of a valve body, valve cover, float, and a seal. The valve cover is connected to the opening at the top of the valve body, the float is housed within the valve body, and the seal is located between the valve cover and the valve body. During operation, the float rises to the top of the valve body and contacts the seal. When the float is fully in contact with the seal, a seal is achieved; when the float moves away from the seal, gas is released.

[0003] When the exhaust process is too violent during use, the airflow rushes directly upward into the valve body, and the float ball cannot quickly and accurately enter the opening of the seal within the valve body, thus failing to achieve rapid closure. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a composite exhaust valve that can quickly cause the float to contact the seal to achieve rapid closure, and improve the sealing effect when closed, in order to address the above-mentioned defects.

[0005] To solve the above-mentioned technical problems, the provided composite exhaust valve includes a valve body, a connecting pipe port at the lower part of the valve body, an exhaust valve cover at the upper part of the valve body, a sealing ring between the exhaust valve cover and the upper port of the valve body, an exhaust valve filter screen inside the exhaust valve cover, a float ball inside the inner cavity of the valve body, and a side exhaust assembly communicating with the inner cavity of the valve body. Its structural feature is that a support cylinder that can slide up and down is installed in the inner cavity of the valve body, the support cylinder has an inner hole that runs through the upper and lower parts, and the float ball is located at the upper part of the inner hole of the support cylinder.

[0006] The valve body has at least three inwardly protruding ribs on its inner cavity wall, and the multiple ribs form a slide for the support cylinder to slide up and down.

[0007] The lower end of the rib is provided with an inwardly recessed portion to reduce the space enclosed by the inwardly recessed portions of multiple ribs, and the reduced rib section forms a bottom support platform that restricts the downward movement of the support tube.

[0008] The side exhaust assembly includes a valve body side cover connected to the side of the valve body. Inside the valve body side cover, a side float that can swing is mounted via a swing rod bracket. A sealing plug is mounted on the swing rod bracket. The valve body side cover is also provided with a side exhaust channel, and when the side float swings, the sealing plug can block the side exhaust channel.

[0009] The sealing ring includes a steel ring gasket and a sealing sleeve wrapped around the steel ring gasket. The lower surface of the sealing sleeve is provided with a sealing protrusion that can fit into the upper port of the valve body. The lower part of the inner ring of the sealing sleeve is provided with a funnel-shaped opening, and the wall thickness of the funnel-shaped opening gradually decreases from top to bottom.

[0010] Below the upper cover of the exhaust valve is an inner cover of the exhaust valve. The inner hole of the inner cover of the exhaust valve is chamfered. The upper surface of the sealing sleeve is provided with a fitting cylindrical section that can fit with the chamfer and partially extend into the inner hole of the inner cover of the exhaust valve.

[0011] With the above structure, when the airflow impacts the float, it also impacts the support cylinder. The support cylinder ensures the vertical sliding direction of the float, thereby ensuring that the float quickly and accurately impacts the sealing ring and fits with it, thus achieving rapid closure of the exhaust valve.

[0012] In summary, the above solution has the following advantages compared with the prior art: the present invention can quickly and accurately cause the float to contact the sealing element to achieve rapid closure, and has the advantages of quick closure and good sealing effect. Attached Figure Description

[0013] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 yes Figure 1 An enlarged structural diagram of region A in the embodiment; Figure 3 yes Figure 1 A schematic diagram of the sealing ring in the embodiment; Figure 4 yes Figure 1 A schematic diagram of the support tube in the embodiment; Figure 5 This is a schematic diagram of the support tube in another embodiment; Figure 6 This is a schematic diagram of the structure of a composite exhaust valve in the prior art. Detailed Implementation

[0014] like Figure 6 As shown in the figure, in the existing composite exhaust valve, the float is located in the inner cavity of the valve body, and the sealing gasket that cooperates with the float is a flat gasket. When the airflow impacts the float, the float floats and rushes towards the flat gasket. The float blocks the inner hole of the flat gasket to close the exhaust valve. However, when encountering a small airflow force and a small flow impact, it is difficult for the float to quickly adhere to the flat gasket, resulting in the problem of not being able to quickly close the exhaust valve.

[0015] like Figures 1 to 5As shown in the figure, an embodiment of a composite exhaust valve is provided, which includes a valve body 1. The lower part of the valve body 1 is provided with a connecting pipe port 11. An exhaust valve cover 2 is connected to the upper part of the valve body 1. A sealing ring 3 is provided between the exhaust valve cover 2 and the upper port of the valve body 1. An exhaust valve filter screen 4 is also installed inside the exhaust valve cover 2. A float ball 5 is installed in the inner cavity of the valve body 1. A support cylinder 6 that can slide up and down is installed in the inner cavity of the valve body 1. The support cylinder 6 has an inner hole that runs vertically through the valve body 1. The float ball 5 is located at the upper part of the inner hole of the support cylinder 6. In this embodiment, the valve body 1... The cavity wall is provided with at least three inwardly protruding ribs 12. These ribs 12 form a sliding channel for the support cylinder 6 to slide up and down. The lower end of each rib 12 has an inwardly recessed portion 121 to reduce the space enclosed by the inwardly recessed portions 121. This reduced rib section forms a bottom support platform that restricts the downward movement of the support cylinder 6. When the airflow impacts the float, it also impacts the support cylinder 6, ensuring the vertical sliding direction of the float is determined. This guarantees that the float quickly and accurately impacts the sealing ring 3 and adheres to it, thus achieving rapid closure of the exhaust valve. Of course, the support cylinder 6 can be... Figure 4 The structure in the middle can also be adopted Figure 5 The structure in the middle can have a chamfer on the upper surface of the inner hole to better support the float.

[0016] Referring to the accompanying drawings, a side exhaust assembly communicating with the inner cavity of the valve body 1 is connected to the side of the valve body 1. The specific structure of this side exhaust assembly is prior art. In this embodiment, the side exhaust assembly includes a valve body side cover 20 connected to the side of the valve body 1. A swingable side float 22 is mounted inside the valve body side cover 20 via a swing rod bracket 21. A sealing plug 23 is mounted on the swing rod bracket 21. The valve body side cover 20 is also provided with a side exhaust channel 24, and when the side float 22 swings, the sealing plug 23 can block the side exhaust channel 24. This structure realizes the side exhaust structure of this embodiment.

[0017] Referring to the attached drawings, an exhaust valve middle cover 40 is provided below the exhaust valve upper cover 2. The exhaust valve upper cover 2 and the exhaust valve middle cover 40 are connected to the valve body by bolts. The sealing ring 3 includes a steel ring gasket 31 and a sealing sleeve 32 wrapped around the steel ring gasket 31. The lower surface of the sealing sleeve 32 is provided with a sealing protrusion 33 that can fit against the upper port of the valve body 1. The function of the sealing protrusion 33 is to achieve better fit and seal. The lower part of the inner ring of the sealing sleeve 32 is provided with a funnel-shaped opening, and the wall thickness of the funnel-shaped opening gradually decreases from top to bottom. The lower part of the inner hole of the exhaust valve middle cover 40 is provided with a chamfer. The upper surface of the sealing sleeve 32 is provided with a fitting cylindrical section 34 that can fit against the chamfer and partially extend into the inner hole of the exhaust valve middle cover 40. The above structure can better achieve the sealing between the float and the sealing ring (the float fits through the funnel opening), and can also achieve the sealing between the sealing ring and the exhaust valve middle cover, thus achieving better complete closure of the exhaust valve.

[0018] The above describes the specific structural form of this utility model. This utility model is not limited to the above embodiments. For those skilled in the art, equivalent changes to the specific structure and component substitutions based on this utility model are all within the protection scope of this utility model.

Claims

1. A composite exhaust valve, comprising a valve body (1), a connecting port (11) at the lower part of the valve body (1), an exhaust valve cover (2) connected to the upper part of the valve body (1), a sealing ring (3) between the exhaust valve cover (2) and the upper port of the valve body (1), an exhaust valve filter screen (4) installed inside the exhaust valve cover (2), a float ball (5) installed in the inner cavity of the valve body (1), and a side exhaust assembly communicating with the inner cavity of the valve body (1) connected to the side of the valve body (1), characterized in that: The valve body (1) is equipped with a support cylinder (6) that can slide up and down in its inner cavity. The support cylinder (6) has an inner hole that runs through the upper and lower parts. The float (5) is located at the upper part of the inner hole of the support cylinder (6).

2. The composite exhaust valve according to claim 1, characterized in that: The valve body (1) has at least three inwardly protruding ribs (12) on its inner wall, and the multiple ribs (12) form a slide for the support cylinder (6) to slide up and down.

3. The composite exhaust valve according to claim 2, characterized in that: The lower end of the rib (12) is provided with an inwardly recessed portion (121) so that the space enclosed by the inwardly recessed portions (121) of multiple ribs becomes smaller, and the smaller rib section forms a bottom support platform for restricting the downward movement of the support tube (6).

4. The composite exhaust valve according to claim 1, characterized in that: The side exhaust assembly includes a valve body side cover (20) connected to the side of the valve body (1). A side float (22) that can swing is installed inside the valve body side cover (20) via a swing rod bracket (21). A sealing plug (23) is installed on the swing rod bracket (21). A side exhaust channel (24) is also provided on the valve body side cover (20), and when the side float (22) swings, the sealing plug (23) can block the side exhaust channel (24).

5. The composite exhaust valve according to any one of claims 1-4, characterized in that: The sealing ring (3) includes a steel ring gasket (31) and a sealing sleeve (32) wrapped around the steel ring gasket (31). The lower surface of the sealing sleeve (32) is provided with a sealing protrusion (33) that can fit against the upper port of the valve body (1). The lower part of the inner ring of the sealing sleeve (32) is provided with a trumpet-shaped opening and the wall thickness of the trumpet-shaped opening gradually decreases from top to bottom.

6. The composite exhaust valve according to claim 5, characterized in that: The exhaust valve upper cover (2) is provided with an exhaust valve middle cover (40) below it. The inner hole of the exhaust valve middle cover (40) is provided with a chamfer. The upper surface of the sealing sleeve (32) is provided with a fitting cylindrical section (34) that can fit with the chamfer and partially extend into the inner hole of the exhaust valve middle cover (40).

Images