CN203009958U - Pneumatic feed valve inlet structure - Google Patents

Abstract

Pneumatic feed valve feed inlet structure belongs to pneumatic feed valve field. The existing pneumatic feed valve has the advantages that the feed inlet structure occupies a large space, the consumed materials are more, and the circular tube is not easy to position when the circular tube and the valve body are welded together, so that the valve generates a large size error due to human factors. The utility model comprises a valve main body, a sealing ring fixing piece and a connecting cover plate, wherein the valve main body is fixedly connected with the connecting cover plate, and the connecting cover plate is fixedly connected with the sealing ring fixing piece; the valve comprises a valve body, a connecting cover plate, a sealing ring fixing piece, a connecting cover plate, a valve body and a connecting cover plate, wherein the connecting cover plate is arranged on the valve body, the connecting cover plate is fixedly connected with the sealing ring fixing piece through a bolt, and the connecting cover plate is welded with the connecting cover plate. The utility model is used as a pneumatic feed inlet structure, which simplifies the structure and occupies small space; the consumption of materials is less, and the production cost of the product is saved; the connecting cover plate can be firmly fixed with the valve main body, and large size errors cannot be generated due to human factors when the connecting cover plate and the valve main body are welded together.

Description

Pneumatic feed valve inlet structure

technical field

The utility model relates to the technical field of pneumatic feed valves, in particular to a feed port structure of a pneumatic feed valve.

Background technique

Pneumatic feed valve is suitable for the opening and closing of ash and slag feeding in the dry ash system of thermal power plants, and it is also suitable for the opening and closing of the feeding of abrasive and corrosive dust media such as mines, lime plants, and cement plants. The use and characteristics of the pneumatic feed valve: the pneumatic feed valve is set on the top of the warehouse pump for feeding control of the warehouse pump. The pneumatic feed valve uses a linear cylinder and uses a rotating guide rod mechanism to drive the shaft to rotate 90°, thereby driving the sealing disc to move. When the sealing disc is up, the feed valve is closed; when the seal disc is down, the feed valve is opened. The upper and lower sealing ports and discs are made of stainless steel hardware, and the sealing ring is made of high-temperature corrosion-resistant rubber; the sealing between the port and the disc is realized by the close contact between the sealing ring fixed on the valve body and the sealing ring fixed on the sealing disc The pneumatic feed valve has the characteristics of tight closing, wear resistance and long service life.

As shown in Figure 1, the structure of the feed inlet of the pneumatic feed valve in the prior art includes a flange 1, a round pipe 2, a fixed seat plate 3, a valve body 4 and a sealing ring fixing member 5, and the round pipe 2 is inserted into the valve body 4 , and welded together with the valve main body 4, one end of the round pipe 2 is welded with the flange 1, the other end of the round pipe 2 is welded with the fixed seat plate 3, and the fixed seat plate 3 and the sealing ring fixing member 5 are fixedly connected by bolts together. The feed port structure of the pneumatic feed valve with the above structure takes up a lot of space, consumes more materials, and there is no locatable connection point between the round pipe 2 and the valve body 4. Therefore, after welding the round pipe 2 to the valve body 4 When putting on, the round pipe 2 is not easy to locate, even if the round pipe 2 and the valve main body 4 are welded together, a larger dimensional error will occur. With the continuous development of society and the continuous advancement of science and technology, the structure of the feed port of the pneumatic feed valve in the prior art takes up a large space and consumes more materials. When the round pipe 2 and the valve body 4 are welded together, the round pipe 2. Problems such as difficult positioning also urgently need to be solved, and therefore, people urgently hope that a kind of improved pneumatic feed valve inlet structure comes out.

Contents of the invention

The technical problem to be solved by the utility model is: to overcome the disadvantages of the existing structure of the pneumatic feed valve feed port in the prior art, which occupy a large space, consume more materials, and the round pipe is not easy to locate when the round pipe and the valve main body are welded together. , to meet people's wishes, to provide a pneumatic feed valve feed port structure, this pneumatic feed valve feed port structure occupies a small space, consumes less material, can be firmly fixed with the valve body, and connect the cover When the plate and the valve body are welded together, there will be no dimensional error due to human reasons, which solves the problem of large space occupation and more material consumption in the prior art pneumatic feed valve inlet structure, and the welding of the round pipe and the valve body The problem that the round tubes are not easy to locate when they are together.

The technical scheme adopted by the utility model to solve the technical problem is: the structure of the feed port of the pneumatic feed valve includes the valve main body and the fixing part of the sealing ring, the structure of the feed port of the pneumatic feed valve also includes a connecting cover plate, the valve main body and The connection cover plate is fixedly connected, and the connection cover plate is fixedly connected with the sealing ring fixing member.

Further, a sealing ring is provided between the connecting cover plate and the sealing ring fixing member.

Preferably, the connecting cover plate and the sealing ring fixing member are fixedly connected together by bolts.

Preferably, the valve body and the connection cover are welded together.

The beneficial effects of the utility model are: 1. Since the utility model also includes a connection cover, the valve body is fixedly connected with the connection cover, and the connection cover is fixedly connected with the sealing ring fixing part, and the utility model uses a part of the connection cover It replaces the flange, the round pipe and the fixed seat plate in the structure of the feed port of the pneumatic feed valve in the prior art, so the structure is simplified and the utility model takes up little space. 2. Since the utility model replaces the flange, round pipe and fixed seat plate in the structure of the feed port of the pneumatic feed valve in the prior art with a connecting cover plate, the utility model consumes less material, The raw materials are saved, and the production cost of the product is saved. 3. The connecting cover plate can be firmly fixed with the valve main body, and there will be no dimensional errors due to human factors when the connecting cover plate and the valve main body are welded together. 4. The pneumatic feed valve provided with the utility model has a wide range of applications. It is not only suitable for the opening and closing of ash and slag feeding in the dry ash system of thermal power plants, but also suitable for wear and corrosion in mines, lime plants, and cement plants. The feed opening and closing of the dust medium. 5. The pneumatic feed valve provided with the utility model has the characteristics of tight closing, wear resistance and long service life. 6. The utility model is reasonable in design and strong in practicability, and has wide popularization and use value in fields where pneumatic feed valves are required.

Description of drawings

Fig. 1 is the cross-sectional view of the feed port structure of the pneumatic feed valve of the prior art;

Fig. 2 is a sectional view of the utility model;

Explanation of reference numerals in Fig. 1 to Fig. 2: 1—flange; 2—round pipe; 3—fixed seat plate; 4—valve main body; plate.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail, not to limit the scope of implementation of the utility model hereto, and this embodiment does not limit the protection scope of the utility model, and those who are familiar with this art, in Reasonable changes made without departing from the protection scope and spirit of the present utility model shall belong to the protection scope of the present utility model.

As shown in Figure 2, the feed port structure of the pneumatic feed valve described in this embodiment includes a valve main body 4 and a sealing ring fixing member 5, the feed port structure of the pneumatic feed valve also includes a connecting cover plate 6, and the valve main body 4 is fixedly connected with the connection cover plate 6, and the connection cover plate 6 is fixedly connected with the sealing ring fixing member 5. Further, a sealing ring is provided between the connecting cover plate 6 and the sealing ring fixing member 5 . Preferably, the connecting cover plate 6 and the sealing ring fixing member 5 are fixedly connected together by bolts. Preferably, the valve main body 4 and the connection cover plate 6 are welded together. The inlet structure of the pneumatic feed valve described in this embodiment replaces the flange 1, the round pipe 2 and the fixed seat plate 3 in the structure of the feed inlet of the pneumatic feed valve in the prior art with a connecting cover plate 6. Therefore, the structure is simplified. This embodiment takes up less space, consumes less material, and can be firmly fixed with the valve main body 4. When the connecting cover plate 6 and the valve main body 4 are welded together There will be no dimensional error due to human reasons, and the structure of the feed port of the pneumatic feed valve in the prior art has a large space occupation, a large amount of material consumption, and the difficulty of positioning the round pipe when the round pipe and the valve body are welded together. question.

The above is only a preferred embodiment of the utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the utility model patent application scope are all included in the utility model patent application. within the scope of protection.

Claims (4)

1. air-actuated feeding valve feeding inlet structure, comprise valve body (4) and seal ring fixed block (5), it is characterized in that: also comprise connecting cover plate (6), valve body (4) and be connected cover plate (6) and be fixedly connected with, connection cover plate (6) is fixedly connected with seal ring fixed block (5).

2. air-actuated feeding valve feeding inlet structure according to claim 1, is characterized in that: be provided with seal ring between described connection cover plate (6) and described seal ring fixed block (5).

3. air-actuated feeding valve feeding inlet structure according to claim 1 and 2, it is characterized in that: described connection cover plate (6) and described seal ring fixed block (5) are bolted to connection together.

4. air-actuated feeding valve feeding inlet structure according to claim 1 is characterized in that: described valve body (4) be connected connection cover plate (6) and weld together.

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