CN212080198U - Double-disc air-tight seal valve - Google Patents

Abstract

The utility model discloses a double-disc airtight valve, a double-layer valve plate structure is arranged in a valve body, the double-layer valve plate structure comprises a first disc and a second disc, and the first disc and the second disc are connected into a double-layer valve plate structure which is relatively eccentric up and down through bolts; two ends of the double-layer valve plate structure are fixedly connected with the inside of the valve body through shaft heads; the inner part of the valve body is also provided with a first compression ring and a second compression ring, and the first compression ring and the second compression ring are respectively semicircular ring baffles with non-concentric inner and outer rings; the first compression ring and the second compression ring are respectively welded on the inner wall of the valve body in a layered mode to form an annular groove; the valve body is provided with an air inlet at the position of the annular groove. The utility model provides a two disk air-tight seal valve, valve structure is simple, and the essential element only is two eccentric discs and two clamping rings, compares traditional sealing valve, and manufacturing process is simple, expense greatly reduced.

Description

Double-disc air-tight seal valve

Technical Field

The utility model relates to the technical field of valves, concretely relates to two disk air-tight seal valves.

Background

Pollution in cities comes mainly from two aspects: one is pollution of waste and garbage, and the other is influence of waste gas; the pollution of the waste is currently checked by the relevant departments, and the discharge of the waste gas requires a common effort by the relevant departments and manufacturers, because the gas delivery controllability is not so high, and the discharge is not so simple in terms of industrial waste gas, in which case ventilation valves are required.

As a butterfly valve, the ventilation valve is small and exquisite, and a valve device which is flexible to use can regulate and control media in the gas pipeline system from time to time, so that the pipeline problem of the media caused by various factors is prevented, and the ventilation valve is in a hard sealing butterfly valve mode at present, and is forged to a certain extent by stainless steel, so that the durability of the ventilation valve is ensured.

However, the existing air valve products cannot meet the complex working conditions of strong corrosivity, high sealing requirement, frequent opening and high response speed due to the problem of structural materials.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two disk air-tight seal valves, it is complicated to have solved ordinary valve structure among the prior art, and the leakproofness is poor, problem that the preparation technology is complicated.

In order to achieve the above object, the utility model provides a following technical scheme:

a double-disc air sealing valve comprises a valve body, wherein a double-layer valve plate structure is arranged inside the valve body and comprises a first disc and a second disc which are connected through bolts to form a double-layer valve plate structure which is relatively eccentric up and down; two ends of the double-layer valve plate structure are fixedly connected with the inside of the valve body through shaft heads; the inner part of the valve body is also provided with a first compression ring and a second compression ring, and the first compression ring and the second compression ring are respectively semicircular ring baffles with non-concentric inner and outer rings; the first compression ring and the second compression ring are respectively welded on the inner wall of the valve body in a layered mode to form an annular groove; the valve body is provided with an air inlet at the position of the annular groove.

According to the double-disc airtight valve, the preferable scheme is that a pneumatic actuator is further installed on the outer side of the valve body.

According to the double-disc airtight valve, the optimal scheme is that the pneumatic actuator is internally provided with the electromagnetic valve, and the pneumatic actuator is electrically connected with the electromagnetic valve.

The double-disc airtight valve preferably adopts the scheme that the electromagnetic valve is connected with the air inlet hole through an air pipe.

In the above double-disc airtight valve, preferably, the pipeline of the air pipe is provided with a pressure reducing valve.

The double-disc airtight valve has the advantages that when the double-layer valve plate structure rotates to the valve closing position, the annular groove and the double-layer valve plate structure form a closed cavity.

The double-disc airtight valve has the advantages that the shaft head is rotatably connected with the valve body.

The utility model has the advantages that:

(1) the double-disc gas sealing valve provided by the novel double-disc gas sealing valve is sealed by only utilizing gas, and does not use any sealing material, so that the problem that the sealing material needs to be replaced after the traditional sealing valve frequently acts is solved, and the problem that the proper sealing material does not exist under partial harsh working conditions is also solved;

(2) the double-disc air-tight sealing valve provided by the utility model has a simple structure, the main components are only two eccentric discs and two pressure rings, compared with the traditional sealing valve, the manufacturing process is simple, and the cost is greatly reduced;

(3) the double-disc air-tight sealing valve provided by the utility model has the advantages that the valve is sealed by compressed air, the air source is easy to obtain, meanwhile, the action characteristic of the valve is combined, the electromagnetic valve is used for controlling, compressed air is only introduced in a closed state, and the air consumption of the compressed air is saved;

(4) the utility model provides a two disk air-tight seal valves, overall structure is simple, low in production cost, uses convenient operation, and the leakproofness is strong, has very big popularization and application and worth.

Drawings

Fig. 1 is a schematic view of the overall structure of the valve of the present invention;

FIG. 2 is a schematic view of the internal structure of the valve body of the present invention;

fig. 3 is a sectional view of the valve of the present invention in an open state;

fig. 4 is a cross-sectional view of the valve of the present invention in a closed state;

in the figure: 1-valve body, 2-disc I, 3-disc II, 4-press ring I, 5-press ring II, 6-air inlet, 7-pneumatic actuator, 8-electromagnetic valve, 9-shaft head, 10-pressure reducing valve and 11-air pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, it should be noted that the terms of orientation such as left, right, up, down, head and tail in the embodiments of the present invention are only relative concepts or reference to the normal use state of the product, and should not be considered as limiting. The following describes the present invention in detail with reference to specific embodiments.

Embodiment 1 a double-disc airtight valve, the structure of which is shown in fig. 1, includes a valve body 1, a double-layer valve plate structure is installed inside the valve body 1, the double-layer valve plate structure includes a first disc 2 and a second disc 3, and the first disc 2 and the second disc 3 are connected by bolts to form a double-layer valve plate structure which is relatively eccentric up and down; two ends of the double-layer valve plate structure are fixedly connected with the inside of the valve body 1 through shaft heads 9; wherein, the shaft head 9 is rotatably connected with the valve body 1.

A first compression ring 4 and a second compression ring 5 are further arranged inside the valve body 1, the first compression ring 4 and the second compression ring 5 are respectively semicircular baffle plates with eccentric inner and outer rings, and the baffle plates are shown in figure 2; the first compression ring 4 and the second compression ring 5 are respectively welded on the inner wall of the valve body 1 in a layered manner to form an annular groove; when the double-layer valve plate structure rotates to a valve closing position, a closed cavity is formed between the annular groove and the double-layer valve plate structure.

Specifically, the valve body 1 is provided with an air inlet hole 6 at the position of the annular groove. The pneumatic actuator 7 is further installed on the outer side of the valve body 1, the electromagnetic valve 8 is installed in the pneumatic actuator 7, the pneumatic actuator 7 is electrically connected with the electromagnetic valve 8, the electromagnetic valve 8 is connected with the air inlet 6 through the air pipe 11, and the pressure reducing valve is installed on the pipeline of the air pipe 11.

The utility model provides a two disk gas seal valve, the valve open mode is shown in figure 3, when the valve is in the closure state, as shown in figure 4, utilize the characteristic of two-position solenoid valve, the end of giving vent to anger of solenoid valve when the closure state, connect inlet port 6 on compressed air to valve body 1, let in compressed air toward airtight cavity, make the inside clean gas that is full of cavity, the inside gas pressure of cavity is greater than the pressure of valve both sides simultaneously, just so guaranteed that valve both sides gas can not get across gas, the leakproofness of valve has been guaranteed.

The novel double-disc gas-tight seal valve provided by the utility model is sealed by gas only without using any sealing material, so that the problem that the sealing material needs to be replaced after the traditional seal valve frequently acts is avoided, and the problem that no proper sealing material exists under partial harsh working conditions is solved. The valve has simple structure, the main components are only two eccentric discs and two pressure rings, and compared with the traditional sealing valve, the valve has simple manufacturing process and greatly reduced cost. The valve is sealed by compressed air, the air source is easy to obtain, and meanwhile, the valve is controlled by an electromagnetic valve by combining the action characteristic of the valve, and compressed air is only introduced in a closed state, so that the air consumption of the compressed air is saved.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. A double-disc air-tight sealing valve comprises a valve body and is characterized in that a double-layer valve plate structure is mounted inside the valve body and comprises a first disc and a second disc, and the first disc and the second disc are connected through bolts to form a double-layer valve plate structure which is eccentric up and down; two ends of the double-layer valve plate structure are fixedly connected with the inside of the valve body through shaft heads; the inner part of the valve body is also provided with a first compression ring and a second compression ring, and the first compression ring and the second compression ring are respectively semicircular ring baffles with non-concentric inner and outer rings; the first compression ring and the second compression ring are respectively welded on the inner wall of the valve body in a layered mode to form an annular groove; the valve body is provided with an air inlet at the position of the annular groove.

2. The double disk hermetic seal valve according to claim 1, wherein a pneumatic actuator is further installed on the outside of the valve body.

3. The double disk hermetic seal valve according to claim 2, wherein the pneumatic actuator is provided with a solenoid valve therein, and the pneumatic actuator and the solenoid valve are electrically connected.

4. The double disk hermetic seal valve according to claim 3, wherein the solenoid valve is connected to the air inlet hole through an air pipe.

5. The double disk hermetic seal valve according to claim 4, wherein the pipeline of the air pipe is provided with a pressure reducing valve.

6. The double disk hermetically sealed valve of claim 1 wherein the annular groove forms a sealed chamber with the double-layered valve plate structure when the double-layered valve plate structure is rotated to the valve closed position.

7. The double disk hermetic seal valve according to claim 1, wherein the shaft head is rotatably connected to the valve body.

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