Safety valve provided with air inlet channel and communicated with inner cavity

Abstract

The utility model relates to the technical field related to automatic valves, in particular to an inner cavity communicated safety valve with an air inlet channel, which comprises a valve cover, a valve body and an internal component, the internal component is arranged at the temporal part of the valve body, the valve cover is movably arranged at the top of the valve body, a sound absorption device is fixedly arranged in the valve cover, and the sound absorption device is connected with the air inlet channel. According to the utility model, the inner wall of the valve cover is fixedly provided with the plurality of sound absorption ports, and the sound absorption plates are fixedly arranged in the sound absorption ports, so that the noise is reduced during the working period, and a quiet operation environment is provided.

Description

Technical Field

[0001] The utility model relates to the technical field related to automatic valves and is a safety valve with an inner cavity connected with an air intake channel. Background Art

[0002] Safety valves are special valves whose opening and closing parts are normally closed under the action of external forces. When the medium pressure in the equipment or pipeline exceeds the specified value, the medium is discharged to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. Safety valves belong to automatic valves and are mainly used in boilers, pressure vessels and pipelines to control the pressure not to exceed the specified value, which plays an important protective role in personal safety and equipment operation. Note: Safety valves must undergo pressure tests before use.

[0003] The application number is CN201920447926.3, which discloses a safety valve, which includes a valve body with an air inlet and a pressure relief port, a valve stem, a valve bonnet, a sealing gasket, and an elastic member, wherein the valve bonnet is provided with a step to form a connecting section and an extension section, the valve stem is movably arranged in the valve body, the connecting section of the valve bonnet is connected to the valve body, the elastic member is sleeved on the valve stem, the sealing gasket is arranged between the head of the valve stem and the air inlet, and the two ends of the elastic member are respectively against the head of the valve stem and the steps of the valve bonnet to provide a reset force for the sealing gasket to seal the air inlet under normal pressure. Under overpressure, the valve stem moves in the extension section of the valve bonnet, and the setting of the extension section provides protection for the movement of the valve stem, so that the valve stem will not be disturbed by external objects during the expansion and contraction process. The utility model limits the movement stroke of the valve stem to the inside of the device, avoids interference with the movement of the valve stem by external objects, and improves the pressure relief speed.

[0004] In the practical cases proposed above, although the movement stroke of the valve stem is limited inside the device through the valve body, valve stem, valve bonnet, sealing gasket and elastic parts of the air inlet and pressure relief port, thus avoiding interference of external objects on the movement of the valve stem and improving the pressure relief speed, there is a shortcoming that the device described above will generate more noise during operation, and this problem has not yet been dealt with. Therefore, it is necessary to fix a number of sound absorption ports on the inner wall of the valve cover and to fix a sound absorption panel inside the sound absorption port, so as to reduce the noise generation during operation and provide a quieter operating environment. Utility Model Content

[0005] The utility model aims to provide a safety valve with an air intake passage connected to the inner cavity, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model relates to a technical field related to automatic valves, and has a safety valve connected with an inner cavity of an air intake channel, comprising a valve cover, a valve body and an internal component, wherein the internal component is mounted on the temporal part of the valve body, the valve cover is movably mounted on the top of the valve body, and a sound absorbing device is fixedly arranged on the inside of the valve cover.

[0008] Preferably, the valve cover contains a cover body, a fixing bolt, an adjusting screw and a valve cap, the adjusting screw is rotatably mounted on the top of the cover body, the fixing bolt is rotatably mounted along the edge of the cover body, and the valve cap is movably mounted on the top of the adjusting screw.

[0009] Preferably, a plurality of sound absorbing openings are fixedly provided on the inner wall of the cover body, and a sound absorbing panel is fixedly provided inside the sound absorbing openings.

[0010] Preferably, the internal components include a valve seat, an adjusting ring, a valve disc, a recoil disc, a valve stem, a guide sleeve and a spring.

[0011] Preferably, the valve seat is fixedly installed at the bottom, an adjusting ring is fixedly installed on the outer side of the top of the valve seat, a valve disc is movably installed on the top of the valve seat, a recoil disc is movably installed on the top of the valve disc, a valve stem is fixedly installed inside the recoil disc, a guide sleeve is movably installed on the top of the recoil disc, a spring is fixedly installed on the top of the guide sleeve, a groove is fixedly opened in the middle of the top of the recoil disc, and the groove is adapted to the valve stem push head.

[0012] Preferably, the spring contains a spring body, an oil storage cavity is fixedly opened inside the spring body, a plurality of oil outlet holes are fixedly opened on the outside of the spring body, the oil outlet holes are communicated with the oil storage cavity, and fixing plates are fixedly installed on the top and bottom of the spring body.

[0013] The utility model has the following beneficial effects:

[0014] The utility model is a safety valve with an air inlet passage connected to the inner cavity. A plurality of sound absorbing openings are fixedly opened on the inner wall of a valve cover, and a sound absorbing plate is fixedly arranged inside the sound absorbing opening, so that the noise generation is reduced during operation and a quieter operating environment is provided.

[0015] The utility model is a safety valve with an air intake passage inner cavity connected, wherein a plurality of oil leakage holes are fixedly opened on the outer side of a spring arranged inside, and an oil storage cavity is fixedly opened on the temporal part of a spring body. In this way, during operation, when the fluid pressure in the pipeline is greater than the spring pressure, the spring will be compressed by force, and the lubricating oil in the internal oil storage cavity will be discharged to lubricate the spring. This arrangement can provide a certain maintenance effect for the internal spring, and prolong the actual service life of the internal spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structural disassembly of a safety valve with an air intake passage connected to the inner cavity;

[0018] Figure 2 It is a schematic diagram of the overall appearance of a safety valve with an air intake passage connected to the inner cavity;

[0019] Figure 3 A schematic cross-sectional internal view of a safety valve with an air inlet passage connected to the inner cavity;

[0020] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A.

[0021] In the figure: 1. valve cover; 2. valve body; 3. internal components; 101. cover body; 102. fixing bolt; 103. adjusting screw; 104. valve cap; 301. valve seat; 302. adjusting ring; 303. valve disc; 304. recoil disc; 305. valve stem; 306. guide sleeve; 307. spring; 1011. sound absorbing port; 1012. sound absorbing board; 3071. spring body; 3072. oil storage chamber; 3073. oil outlet hole; 3074. fixing plate. Implementation

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 As shown, the utility model is a safety valve with an air intake passage connected to the inner cavity, comprising a valve cover 1, a valve body 2 and an internal component 3, wherein the internal component 3 is mounted on the temporal part of the valve body 2, the valve cover 1 is movably mounted on the top of the valve body 2, and a sound absorbing device is fixedly arranged on the inside of the valve cover 1.

[0024] The valve cover 1 contains a cover body 101, a fixing bolt 102, an adjusting screw 103 and a valve cap 104. The adjusting screw 103 is rotatably mounted on the top of the cover body 101, the fixing bolt 102 is rotatably mounted on the edge of the cover body 101, and the valve cap 104 is movably mounted on the top of the adjusting screw 103.

[0025] A plurality of sound absorbing openings 1011 are fixedly provided on the inner wall of the cover body 101 , and a sound absorbing panel 1012 is fixedly provided inside the sound absorbing openings 1011 .

[0026] The internal component 3 contains a valve seat 301 , an adjustment ring 302 , a valve disc 303 , a recoil disc 304 , a valve stem 305 , a guide sleeve 306 and a spring 307 .

[0027] The valve seat 301 is fixedly installed at the bottom, an adjusting ring 302 is fixedly installed on the outer side of the top of the valve seat 301, a valve disc 303 is movably installed on the top of the valve seat 301, a recoil disc 304 is movably installed on the top of the valve disc 303, a valve stem 305 is fixedly installed inside the recoil disc 304, a guide sleeve 306 is movably installed on the top of the recoil disc 304, a spring 307 is fixedly installed on the top of the guide sleeve 306, a groove is fixedly opened in the middle of the top of the recoil disc 304, and the groove is adapted to the push head of the valve stem 305.

[0028] The spring 307 contains a spring body 3071, an oil storage chamber 3072 is fixedly opened inside the spring body 3071, a plurality of oil outlet holes 3073 are fixedly opened on the outside of the spring body 3071, the oil outlet holes 3073 are communicated with the oil storage chamber 3072, and fixing plates 3074 are fixedly installed on the top and bottom of the spring body 3071.

[0029] Working principle: When using this device, you first need to assemble the valve cover 1, valve body 2 and internal parts 3. When the fluid pressure is less than the pressure of the spring 307, the valve disc 303 does not move and the safety valve is in a closed state. When the fluid pressure is greater than the pressure of the spring 307, the valve disc 303 will move upward and begin to release pressure. When the valve disc 303 moves upward, the spring 307 is squeezed and the lubricating oil in the internal oil storage chamber 2073 will be discharged through the oil outlet 3073 for lubrication. At the same time, when the pressure is released, the noise generated will be absorbed by the sound absorption port 1011 and the internal sound absorption board 1012, thereby reducing the noise generation and providing a quiet operating environment.

[0030] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can well understand and use the present invention. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A safety valve with an air inlet passage connected to the inner cavity, comprising a valve cover (1), a valve body (2) and an internal component (3), characterized in that: The internal component (3) is installed inside the valve body (2), the valve cover (1) is movably installed on the top of the valve body (2), and a sound absorbing device is fixedly arranged on the inside of the valve cover (1).

2. A safety valve with an air inlet passage connected to the inner cavity according to claim 1, characterized in that: The valve cover (1) contains a cover body (101), a fixing bolt (102), an adjusting screw (103) and a valve cap (104); the adjusting screw (103) is rotatably mounted on the top of the cover body (101); the fixing bolt (102) is rotatably mounted on the edge of the cover body (101); and the valve cap (104) is movably mounted on the top of the adjusting screw (103).

3. A safety valve with an air inlet passage connected to the inner cavity according to claim 2, characterized in that: A plurality of sound absorbing openings (1011) are fixedly provided on the inner wall of the cover body (101), and a sound absorbing panel (1012) is fixedly provided inside the sound absorbing opening (1011).

4. A safety valve with an air inlet passage connected to the inner cavity according to claim 1, characterized in that: The internal component (3) contains a valve seat (301), an adjustment ring (302), a valve disc (303), a recoil disc (304), a valve stem (305), a guide sleeve (306) and a spring (307).

5. A safety valve with an air inlet passage connected to the inner cavity according to claim 4, characterized in that: The valve seat (301) is fixedly mounted at the bottom, an adjusting ring (302) is fixedly mounted on the outer side of the top of the valve seat (301), a valve flap (303) is movably mounted on the top of the valve seat (301), a recoil disc (304) is movably mounted on the top of the valve flap (303), a valve stem (305) is fixedly mounted inside the recoil disc (304), a guide sleeve (306) is movably mounted on the top of the recoil disc (304), a spring (307) is fixedly mounted on the top of the guide sleeve (306), and a groove is fixedly opened in the middle of the top of the recoil disc (304), and the groove is adapted to the push head of the valve stem (305).

6. A safety valve with an air inlet passage connected to the inner cavity according to claim 4, characterized in that: The spring (307) contains a spring body (3071), an oil storage chamber (3072) is fixedly provided inside the spring body (3071), a plurality of oil outlet holes (3073) are fixedly provided on the outside of the spring body (3071), the oil outlet holes (3073) are communicated with the oil storage chamber (3072), and fixing plates (3074) are fixedly installed on the top and bottom of the spring body (3071).

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