CN214118978U - Mechanical one-way ventilation valve - Google Patents

Abstract

The invention discloses a mechanical one-way ventilation valve which comprises a valve body, a valve plate, a valve rod, a rotating shaft and a limiting device, wherein the valve plate and the limiting device are arranged on the valve body, the valve plate penetrates through and is fixed on the valve body through the valve rod and the rotating shaft, and the limiting device is arranged on the upper side and the lower side of the valve body to limit the valve plate to move; the valve plate is in a closed state in a natural state, the valve plate is blown open when air comes in a forward direction, and the valve plate is tightly closed under the action of the limiting device when air comes in a reverse direction, so that the air can only flow in a one-way direction. The invention adopts a mechanical structure, is stable and reliable to use, has simple valve body structure, is easy to manufacture and has low cost.

Description

Mechanical one-way ventilation valve

Technical Field

The invention relates to the field of ventilation and gas circulation, in particular to a mechanical one-way ventilation valve.

Background

The valve is widely applied to various fluid control fields and plays an important role in controlling the flow rate, the flow direction and the like of fluid. The ventilation valve is used as a subdivision type of the valve, is widely applied in the fields of indoor ventilation, waste gas treatment and the like, and because the condition that a plurality of air flows are intersected often occurs in the ventilation process, the one-way ventilation valve is particularly important for avoiding the intersection and cross flow of the plurality of air flows, and the existing one-way ventilation valve is often complex in structure and high in manufacturing cost. Therefore, it is necessary to design a mechanical one-way vent valve with simple structure and low cost.

Disclosure of Invention

The invention aims to provide a mechanical one-way vent valve.

The technical solution for realizing the purpose of the invention is as follows: the utility model provides a one-way ventilation valve of mechanical type, includes valve body, valve plate, valve rod, axis of rotation, stop device, wherein:

the valve body is provided with a valve plate and a limiting device, the valve plate penetrates through the valve rod and the rotating shaft and is fixed on the valve body, and the limiting device is arranged on the upper side and the lower side of the valve body to limit the valve plate to move; the valve plate is in a closed state in a natural state, the valve plate is blown open when air comes in a forward direction, and the valve plate is tightly closed under the action of the limiting device when air comes in a reverse direction, so that the air can only flow in a one-way direction.

Further, the valve body is of a square structure.

Further, the valve plate is in a multi-plate ventilation butterfly valve form and is designed into a heavy eccentric structure with a lower weight and a lower light; the valve plate is in a closed state under the condition that no air flow passes through; when the gas flows in the positive direction, the gas blows the lower side of the valve plate through the gas or the external pressure, and the gas can pass through the valve plate; when gas flows reversely, the lower side of the valve plate is blown, the valve plate at the lowest side of the valve body is limited and closed by the limiting device, the upward valve plate is limited and closed by the valve plate at the lower side in sequence, and the valve plate at the highest side is limited and closed by the limiting device, so that the gas stop is realized, and the gas reverse flow is prevented.

Furthermore, the end face between the valve plates is designed with a sealing strip for ensuring air tightness.

Furthermore, the rotating shaft is in a bearing form, the inner ring of the rotating shaft is fixedly connected with the valve rod, and the outer ring of the rotating shaft is fixedly connected with the valve body.

Furthermore, the limiting device is a strip-shaped metal block which is in the same plane with the valve rod.

Furthermore, the valve also comprises interface flanges, wherein the interface flanges are positioned on two sides of the valve body and are respectively connected with the air inlet pipeline and the air outlet pipeline.

Furthermore, the interface flange is an angle steel flange and is welded and fixed on the valve body.

Furthermore, the valve body, the valve plate, the valve rod, the rotating shaft and the limiting device are made of stainless steel or carbon steel according to the use environment.

A mechanical one-way ventilation method, which uses the mechanical one-way ventilation valve.

Compared with the prior art, the invention has the remarkable advantages that: 1) the mechanical structure is adopted, so that the use is stable and reliable; 2) the valve body has simple structure, easy manufacture and low cost.

Drawings

Fig. 1 is a schematic structural view of a mechanical one-way vent valve of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As shown in fig. 1, mechanical one-way vent valve, including valve body 1, valve plate 2, valve rod 3, axis of rotation 4, stop device 5, interface flange 6, set up valve plate 2, valve rod 3, axis of rotation 4, stop device 5, interface flange 6 on the valve body 1, valve plate 2 is fixed in on the valve rod 3, valve rod 3 runs through and is fixed in on the valve body 1 through axis of rotation 4, stop device 5 installs the upper and lower side restriction valve plate action at valve body 1, interface flange 6 is located valve body 1 both sides, links to each other with admission line and outlet duct respectively.

The valve plate 2 is in a closed state in a natural state, the valve plate 2 is blown open when air comes in a forward direction, and the valve plate is tightly closed under the action of the limiting device 5 when air comes in a reverse direction, so that air can only flow in a one-way mode. The invention realizes the unidirectional rotation of the valve plate through a simple mechanical structure, thereby realizing the unidirectional flow of gas.

Considering the practicality of the valve, some embodiments, starting from the shape of the valve body 1, design the valve body 1 into a square structure, and be connected with a circular air pipe and consider to set up an adapter.

Considering the unidirectionality of the valve, some embodiments, starting from the valve plate 2 form, design the valve plate 2 in the form of a multi-plate ventilation butterfly valve, and design the valve plate 2 in an eccentric configuration with a weight lower than the weight of the upper part. The valve plate 2 is in the closed state when no air flow passes through; when the gas flows in the positive direction, the gas blows the lower side of the valve plate 2 through the gas or the external pressure, and the gas can pass through the valve plate; when gas flows reversely, the lower side of the valve plate 2 is blown, the valve plate at the lowest side of the valve body 1 is limited and closed by the limiting device 5, the upward valve plate is limited and closed by the valve plate at the lower side in sequence, and the valve plate at the highest side is limited and closed by the limiting device, so that the gas is stopped, and the gas is prevented from flowing reversely. Furthermore, some embodiments are designed with a sealing strip at the end face between the valve plates 2, taking into account the tightness of the device.

In consideration of the mechanical rotation of the valve, some embodiments are designed in the form of a bearing starting from the form of the rotating shaft 4, the inner ring of the rotating shaft 4 is fixedly connected with the valve rod 3, the outer ring of the rotating shaft 4 is fixedly connected with the valve body 1, and the rotating shaft 4 plays a role of supporting and fixing the valve plate 2 and the valve rod 3 on the valve body 1 while playing a role of driving the valve plate 2 and the valve rod 3 to rotate.

In consideration of the convenience of the valve, in some embodiments, starting from the valve interface form, an interface flange 6 is provided, the interface flange 6 is in an angle steel form, and the interface flange 6 is fixed with the valve body 1 through welding.

In consideration of corrosion resistance, in some embodiments, the valve body 1, the valve plate 2, the valve rod 3, the rotating shaft 4, the limiting device 5, and the interface flange 6 may be made of stainless steel, carbon steel, or the like.

The invention also provides a mechanical one-way ventilation method, which uses the mechanical one-way ventilation valve.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims (9)

1. The utility model provides a mechanical type one-way vent valve which characterized in that, includes valve body (1), valve plate (2), valve rod (3), axis of rotation (4), stop device (5), wherein:

the valve body (1) is provided with a valve plate (2) and a limiting device (5), the valve plate (2) penetrates through the valve body (1) through a valve rod (3) and a rotating shaft (4) and is fixed on the valve body (1), and the limiting device (5) is arranged on the upper side and the lower side of the valve body (1) and limits the valve plate to move; the valve plate (2) is in a closed state in a natural state, the valve plate (2) is blown open when air comes in the forward direction, and the valve plate is tightly closed under the action of the limiting device (5) when air comes in the reverse direction, so that the air can only flow in a one-way mode.

2. Mechanical one-way vent valve according to claim 1, wherein the valve body (1) is of square configuration.

3. A mechanical one-way ventilation valve according to claim 1, characterized in that said valve plate (2) is in the form of a multi-plate ventilation butterfly valve, designed as a heavy-weight eccentric structure, with a lower weight and a lower weight; the valve plate (2) is in a closed state when no air flow passes through; when the gas flows forwards, the gas blows the lower side of the valve plate (2) through the gas or the external pressure, and the gas can pass through the valve plate; when gas flows reversely, the lower side of the valve plate (2) is blown, the valve plate at the lowest side of the valve body (1) is limited and closed by the limiting device (5), the upward valve plate (2) is limited and closed by the valve plate at the lower side (2) in sequence, and the valve plate (2) at the highest side is limited and closed by the limiting device, so that the gas stop is realized, and the gas reverse flow is prevented.

4. A mechanical one-way vent valve according to claim 1 or 3, wherein the end surface between the valve plates (2) is designed with a sealing strip for ensuring air tightness.

5. A mechanical one-way vent valve according to claim 1, wherein the rotating shaft (4) is in the form of a bearing, the inner ring of the rotating shaft (4) is fixedly connected with the valve stem (3), and the outer ring of the rotating shaft (4) is fixedly connected with the valve body (1).

6. A mechanical one-way vent valve according to claim 1, wherein the limiting means (5) is a strip-shaped metal block which is coplanar with the valve stem (3).

7. The mechanical one-way vent valve according to claim 1, further comprising interface flanges (6), wherein the interface flanges (6) are located on two sides of the valve body (1) and are respectively connected with the air inlet pipeline and the air outlet pipeline.

8. The mechanical one-way vent valve according to claim 7, wherein the interface flange (6) is an angle steel flange and is welded and fixed on the valve body (1).

9. The mechanical one-way vent valve according to claim 1, wherein the valve body (1), the valve plate (2), the valve rod (3), the rotating shaft (4) and the limiting device (5) are made of stainless steel or carbon steel according to the use environment.

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