Pressure vacuum release valve

Abstract

The utility model discloses a pressure vacuum relief valve which comprises an electromagnetic driving head, a sealing cover, a valve plate and a valve body, the electromagnetic driving head is arranged at the end of the valve body, a valve port is arranged in the middle of the valve body, the valve plate is arranged in the valve port, a connector is arranged at the bottom of the valve body, and the sealing cover capable of being opened laterally is arranged on the outer side of the valve port. The top of the valve body is provided with the sealing cover which is automatically opened and closed through the electric push rod, the valve port can be sealed through the sealing cover, the valve plate which is automatically opened and closed through the electromagnetic driving head is arranged in the valve port, and the sealing effect is greatly improved through double-layer sealing of the valve plate and the sealing cover. The valve plate is arranged in the valve body, the electromagnetic driving head is arranged at the end of the valve body, intelligent control over the valve plate is facilitated through the electromagnetic driving head, and the first sealing ring is arranged on the side of the sealing cover.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief valves, specifically a pressure vacuum relief valve. Background Technology

[0002] The pressure vacuum relief valve is installed on the top of the dry ash silo and operates continuously. It activates promptly when the back pressure or negative pressure of the ash silo is too high, ensuring the working pressure of the silo remains within the normal range. This prevents the silo from experiencing excessive positive or negative pressure, thus guaranteeing its safety. The valve is characterized by reliable operation, tight sealing, and long service life. It is an indispensable and crucial piece of equipment in the ash silo system, ensuring the working pressure of the silo remains within the normal range and preventing the silo from experiencing excessive positive or negative pressure, thereby guaranteeing its safety.

[0003] For example, the authorized patent with publication number CN218895017U (Pressure Vacuum Relief Valve) includes a valve body with an outer surface diameter of 670 cm. A pressure reaction assembly is connected to the middle of the upper side of the valve body. The pressure reaction assembly includes an exhaust pipe with an exhaust port on its inner wall. Supporting protrusions are attached to both ends of the upper side of the exhaust pipe. A top cover made of carbon fiber is attached to the upper surface of the exhaust pipe. The diameter of the top cover is larger than the diameter of the upper surface of the exhaust pipe. The thickness of the top cover is 8 cm. A threaded seat is fixedly connected to the middle of the upper surface of the top cover. A second fixing bolt is threaded to the inner wall of the upper side of the threaded seat. A limit support plate is threaded to the outer wall of the upper side of the second fixing bolt. This pressure vacuum relief valve sets the opening pressure on the exhaust pipe by the weight of the top cover, ensuring the correct and reliable opening pressure even after long-term operation.

[0004] The existing valve body has a single sealing method, which cannot reinforce the sealing with a sealing cover while sealing the valve plate. The sealing performance and protection effect on the valve body are insufficient, the pressure resistance is insufficient, and it is prone to deformation after long-term use. Utility Model Content

[0005] The purpose of this utility model is to provide a pressure vacuum relief valve to solve the problems mentioned in the background art, such as the valve body having a single sealing method, being unable to reinforce the sealing with a sealing cover while sealing the valve plate, insufficient sealing performance and protection effect on the valve body, insufficient pressure resistance, and easy deformation after long-term use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure vacuum relief valve, comprising an electromagnetic drive head, a sealing cover, a valve plate, and a valve body. The valve body is provided with an electromagnetic drive head at one end, a valve port in the middle of the valve body, a valve plate inside the valve port, a connector at the bottom of the valve body, and a sealing cover that can be opened laterally on the outside of the valve port.

[0007] In a further embodiment, a flange plate is provided at the port of the connector, and the flange plate is connected to the outlet of the dry ash silo.

[0008] In a further embodiment, a second sealing ring is provided on the side of the valve plate, and a connecting shaft is provided at both ends of the valve plate, and the connecting shaft is rotatably connected to the inner side of the valve body.

[0009] In a further embodiment, the electromagnetic drive head is provided with a drive module inside, and the output end of the drive module is electrically connected to the input end of the pressure detection module inside the dry ash silo.

[0010] In a further embodiment, an electric actuator is also included, the telescopic end of which is connected to the bottom of the sealing cover, and the cylinder end of which is connected to the top of the valve body.

[0011] In a further embodiment, the valve stem inside the electromagnetic drive head is connected to the end of the valve plate via a connecting shaft, the side of the sealing cover is provided with a first sealing ring, and the end of the sealing cover is hinged to the end of the valve port via a hinge lug.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The valve body of this utility model is provided with a sealing cover on the top, which is automatically opened and closed by an electric push rod. The cover can seal the valve port. Inside the valve port, there is a valve plate that is automatically opened and closed by an electromagnetic drive head. The double sealing of the valve plate and the sealing cover greatly improves the sealing effect, and the sealing cover can also provide pressure-resistant shielding protection.

[0014] The valve body of this utility model has a valve plate inside and an electromagnetic drive head at the end of the valve body. The electromagnetic drive head facilitates intelligent control of the valve plate. A first sealing ring is provided on the side of the sealing cover and a second sealing ring is provided on the side of the valve plate. The first and second sealing rings can enhance the sealing effect. A connector is provided in the middle of the side of the valve body for easy connection to a dry ash silo. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a pressure vacuum relief valve according to the present invention;

[0016] Figure 2 This is a top view of the valve body of this utility model;

[0017] Figure 3 This is a top view of the valve plate of this utility model;

[0018] Figure 4 This is a structural schematic diagram of part A of this utility model.

[0019] In the diagram: 1. Electromagnetic drive head; 2. Sealing cover; 3. Valve port; 4. Valve plate; 5. Valve body; 6. Connector; 7. First sealing ring; 8. Hinge ear; 9. Second sealing ring; 10. Electric actuator. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figure 1-4 This utility model provides an embodiment of a pressure vacuum relief valve, comprising an electromagnetic drive head 1, a sealing cover 2, a valve plate 4, and a valve body 5. The valve body 5 has an electromagnetic drive head 1 at one end, a valve port 3 in the middle, a valve plate 4 inside the valve port 3, a connector 6 at the bottom of the valve body 5, a flange plate at the port of the connector 6, and the flange plate is connected to the outlet of the dry ash silo. The flange plate facilitates the installation of the connector 6. A sealing cover 2 that can be opened laterally is provided on the outside of the valve port 3. The valve body 5 is opened and closed by the valve plate 4, the connector 6 facilitates the connection of the valve body 5 to the dry ash silo, and the sealing cover 2 is used to seal the valve port 3.

[0022] A second sealing ring 9 is provided on the side of the valve plate 4. Both ends of the valve plate 4 are provided with connecting shafts, and the connecting shafts are rotatably connected to the inner side of the valve body 5. The sealing effect of the valve plate 4 can be improved by the second sealing ring 9.

[0023] The electromagnetic drive head 1 is equipped with a drive module. The output end of the drive module is electrically connected to the input end of the pressure detection module in the dry ash silo. The pressure detection module can detect the pressure in the dry ash silo and perform intelligent control on the electromagnetic drive head 1. The valve stem in the electromagnetic drive head 1 is connected to the end of the valve plate 4 via a connecting shaft. The side of the sealing cover 2 is provided with a first sealing ring 7. The end of the sealing cover 2 is hinged to the end of the valve port 3 via a hinge ear 8. The first sealing ring 7 is used to improve the sealing effect of the sealing cover 2. The hinge ear 8 facilitates the hinge between the sealing cover 2 and the valve port 3, making it easy to control the sealing of the valve port 3 by the sealing cover 2. The telescopic end of the electric push rod 10 is connected to the bottom of the sealing cover 2, and the cylinder end of the electric push rod 10 is connected to the top of the valve body 5. The opening and closing of the sealing cover 2 is controlled by the electric push rod 10.

[0024] Working principle: In use, it is connected to the dry ash silo through the connector 6. The sealing cover 2 is automatically unfolded by the electric push rod 10, so that the sealing cover 2 seals the valve port 3. The valve plate 4 is intelligently rotated by the electromagnetic drive head 1. The valve body 5 is opened and closed by the valve plate 4. The sealing effect of the valve plate 4 is improved by the second sealing ring 9. The side of the sealing cover 2 can be sealed and protected by the first sealing ring 7. The sealing cover 2 can be hinged and opened by the hinge lug 8.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pressure vacuum relief valve, comprising an electromagnetic drive head (1), a sealing cover (2), a valve plate (4), and a valve body (5), characterized in that: The valve body (5) is provided with an electromagnetic drive head (1) at one end, a valve port (3) is provided in the middle of the valve body (5), a valve plate (4) is provided inside the valve port (3), a connector (6) is provided at the bottom of the valve body (5), and a sealing cover (2) that can be opened laterally is provided on the outside of the valve port (3).

2. The pressure vacuum relief valve according to claim 1, characterized in that: The connector (6) is provided with a flange plate at its port, and the flange plate is connected to the outlet of the dry ash silo.

3. A pressure vacuum relief valve according to claim 1, characterized in that: The valve plate (4) is provided with a second sealing ring (9) on its side. Both ends of the valve plate (4) are provided with connecting shafts, and the connecting shafts are rotatably connected to the inner side of the valve body (5).

4. A pressure / vacuum relief valve according to claim 1, characterized in that: The electromagnetic drive head (1) is equipped with a drive module inside, and the output end of the drive module is electrically connected to the input end of the pressure detection module in the dry ash silo.

5. A pressure vacuum relief valve according to claim 1, characterized in that: It also includes an electric actuator (10), the telescopic end of which is connected to the bottom of the sealing cover (2), and the cylinder end of which is connected to the top of the valve body (5).

6. A pressure vacuum relief valve according to claim 1, characterized in that: The valve stem inside the electromagnetic drive head (1) is connected to the end connecting shaft of the valve plate (4), and the side of the sealing cover (2) is provided with a first sealing ring (7). The end of the sealing cover (2) is hinged to the end of the valve port (3) through the hinge ear (8).

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