Pressure vacuum release valve
By designing a pressure vacuum relief valve that includes a dustproof and waterproof cover and automatic monitoring functions, the problems of environmental pollution and blockage of pressure relief valves under high and low pressure conditions are solved, achieving safe and clean pressure regulation and automatic recovery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-29
- Publication Date
- 2026-04-07
AI Technical Summary
Existing pressure relief valves have problems such as dust and gas surging into the atmosphere when the pressure is too high, polluting the environment and endangering life safety, and air entering the ash silo when the negative pressure is too high, causing dry ash to become damp, clump together, and block the discharge port.
A pressure vacuum relief valve is designed, comprising a valve seat, a valve cover, a pressure regulating diaphragm, a dustproof and waterproof cover, a vent tube, and a detection tube. The vent membrane is used for pressure relief, the dustproof and waterproof cover prevents dust and moisture from entering, and the detection tube automatically monitors the pressure and restores balance.
It prevents dust and moisture from entering under high or low pressure conditions, maintaining a clean environment and safe operation of the ash silo, while automatically adjusting the pressure to prevent blockage and contamination.
Smart Images
Figure CN224093913U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of pressure relief devices, and in particular to a pressure vacuum relief valve. Background Technology
[0002] There are two types of pressure relief devices: safety ducts (explosion-proof cylinders) and pressure relief valves. Safety ducts are release membrane structures; when the pressure inside the ash silo increases, the membrane ruptures to release the pressure. Pressure relief valves are a replacement for safety ducts and are now widely used. Their structure involves a spring pressing a diaphragm disc; pressure overcomes the spring pressure to open the diaphragm disc and release the pressure. Their biggest advantage is their automatic recovery capability. Their drawbacks and shortcomings are: if the pressure is too high and the valve opens, high-pressure dust gas from the ash silo will rush into the atmosphere, causing serious pollution to the surrounding environment and endangering human life; if the negative pressure is too high and the valve opens, the moisture content will be too high, and air entering the ash silo will cause the dry ash to become damp and clump together, hindering ash discharge and severely clogging the discharge port. Utility Model Content
[0003] To address the issues of high-pressure dust gas entering the atmosphere from the ash silo when the pressure relief valve is opened due to excessive pressure, causing serious pollution to the surrounding environment and endangering human life; and excessive moisture content entering the ash silo due to excessive negative pressure, leading to dry ash becoming damp and clumping, hindering ash discharge, and severely clogging the discharge port, this application provides a pressure vacuum relief valve.
[0004] The pressure vacuum relief valve provided in this application adopts the following technical solution:
[0005] A pressure vacuum relief valve includes a pressure relief valve body, which includes a valve seat and a valve cover. A pressure regulating membrane is disposed on the valve cover. A dustproof and waterproof cover is connected to the valve seat. The dustproof and waterproof cover is located at the port of the valve seat and below the pressure regulating membrane. A vent pipe is connected to the valve cover, and a vent pipe is disposed on the vent pipe.
[0006] Preferably, a detection tube is connected to the valve seat, one end of which is inserted into the valve seat and the other end is inserted out of the valve seat. An automatic pressure monitoring assembly is provided at the end of the detection tube that is inserted out of the valve seat.
[0007] In summary, this application includes the following beneficial technical effects:
[0008] This utility model provides a pressure vacuum relief valve. When the internal pressure of the ash silo is too high, it can release pressure to the outside through a breathable membrane, and the dustproof and waterproof cover can block dust. When the internal pressure of the ash silo is too low, and atmospheric air is poured into the dust, the dustproof and waterproof cover can clean and dry the air source. The pressure vacuum relief valve of this application has the advantages of balancing pressure and protecting the safe operation of the ash silo, while also being dustproof, breathable, and waterproof. In addition, the valve seat is equipped with a detection tube and an automatic pressure monitoring assembly, which can automatically monitor the internal pressure of the ash silo and automatically restore balance. This achieves the effect of improving the problems of high-pressure dust gas in the ash silo rushing into the atmosphere when the valve is opened due to excessive pressure, causing serious pollution to the surrounding environment and endangering human life; and the problem of excessive moisture content when the valve is opened due to excessive negative pressure, causing the dry ash to become damp and clump together, resulting in poor ash discharge and serious blockage of the discharge port. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the pressure vacuum relief valve in the embodiments of this application.
[0010] Explanation of reference numerals in the attached drawings: 1. Pressure relief valve body; 11. Valve seat; 12. Valve cover; 2. Pressure regulating diaphragm; 3. Dustproof and waterproof cover; 4. Vent pipe; 41. Vent membrane; 5. Detection tube; 51. Automatic pressure monitoring assembly. Detailed Implementation
[0011] To enable those skilled in the art to better understand the present invention, the solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0012] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientation structure and operation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0013] This application discloses a pressure vacuum relief valve. (Refer to...) Figure 1 The pressure vacuum relief valve includes a pressure relief valve body 1, which includes a valve seat 11 and a valve cover 12. A pressure regulating membrane 2 is provided on the valve cover 12. A dustproof and waterproof cover 3 is connected to the valve seat 11. The dustproof and waterproof cover 3 is located at the port of the valve seat 11 and below the pressure regulating membrane 2. A vent pipe 4 is connected to the valve cover 12, and a vent membrane 41 is provided on the vent pipe 4.
[0014] A detection tube 5 is connected to the valve seat 11. One end of the detection tube 5 is inserted into the valve seat 11 and the other end is inserted out of the valve seat 11. An automatic pressure monitoring assembly 51 is provided at the end of the detection tube 5 that is inserted out of the valve seat 11.
[0015] The implementation principle of the pressure vacuum relief valve in this application embodiment is as follows: when the internal pressure of the ash silo is too high, it can be released to the outside through the breathable membrane 41, and the dustproof and waterproof cover 3 blocks the dust. When the internal pressure of the ash silo is too low, when the atmosphere is injected into the dust, the dustproof and waterproof cover 3 can clean and dry the air source. The pressure vacuum relief valve of this application has the advantages of dustproof, breathable and waterproof while maintaining the original pressure balance and protecting the safe operation of the ash silo. In addition, the valve seat 11 is equipped with a detection tube 5 and an automatic pressure monitoring assembly 51, which can automatically monitor the pressure inside the ash silo and automatically restore balance.
[0016] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A pressure vacuum relief valve, comprising a pressure relief valve body (1), the pressure relief valve body (1) including a valve seat (11) and a valve cover (12), the valve cover (12) being provided with a pressure regulating diaphragm (2), characterized in that: The valve seat (11) is connected to a dustproof and waterproof cover (3), which is located at the port of the valve seat (11) and below the pressure regulating membrane (2). The valve cover (12) is connected to a vent pipe (4), and a vent membrane (41) is provided on the vent pipe (4).
2. The pressure vacuum relief valve according to claim 1, characterized in that: A detection tube (5) is connected to the valve seat (11). One end of the detection tube (5) is inserted into the valve seat (11), and the other end is inserted out of the valve seat (11). An automatic pressure monitoring assembly (51) is provided at the end of the detection tube (5) that is inserted out of the valve seat (11).