Safety valve capable of automatically adjusting pressure

Abstract

The utility model relates to a safety valve, in particular to a safety valve capable of automatically adjusting pressure, which comprises a valve body, a sealing gasket is slidably connected in the valve body, a pressure relief pipe is fixedly connected on the surface of the valve body, pressure relief holes are arranged in the pressure relief pipe and on the surface of the valve body, the two pressure relief holes are positioned on the same horizontal plane, and the sealing gasket is movably attached to the surfaces of the pressure relief holes. An air inlet is formed in the bottom of the valve body, the air inlet is connected with a pressure relief hole, a sliding groove is formed in the valve body, a sealing gasket is connected into the sliding groove in a sliding mode, the sealing gasket is arranged, and a spring is arranged so that the sealing gasket can seal the joint of the air inlet and the sliding groove and the pressure relief hole. The sealing gasket is impacted to move upwards, the position of the pressure relief hole is exposed, a medium is discharged from the pressure relief hole through the pressure relief pipe, the pressure relief work is completed, and manual nursing and operation are not needed.

Description

Technical Field

[0001] The utility model relates to a safety valve, in particular to a safety valve capable of automatically adjusting pressure. Background Art

[0002] A safety valve is a special valve whose opening and closing parts are in a normally closed state under the action of external force. When the medium pressure in the equipment or pipeline rises above the specified value, it prevents the medium pressure in the pipeline or equipment from exceeding the specified value by discharging the medium outside the system.

[0003] When the medium pressure is too high, the traditional safety valve is usually manually relieved by the staff. If the medium pressure is too high outdoors or in a place where few people go, the pressure relief work cannot be performed in time, which may easily cause the pipeline to rupture. Now a safety valve with automatic pressure adjustment is proposed. Utility Model Content

[0004] The main purpose of the utility model is to provide a safety valve with automatic pressure regulation, so as to solve the problem in the related art that pressure relief cannot be performed in time when the medium pressure is too high.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, there is provided a safety valve which automatically adjusts pressure, including a valve body, a sealing gasket being slidably connected inside the valve body, a pressure relief pipe being fixedly connected to the surface of the valve body, pressure relief holes being provided inside the pressure relief pipe and on the surface of the valve body, the two pressure relief holes being in the same horizontal plane, the sealing gasket being movably fitted to the surface of the pressure relief hole, an air inlet being provided at the bottom of the valve body, and the air inlet being connected to the pressure relief hole.

[0006] Furthermore, a sliding groove is provided inside the valve body, the sealing gasket is slidably connected inside the sliding groove, a positioning rod is fixedly installed on the surface of the sealing gasket, an extension block is fixedly connected to the surface of the valve body, positioning holes are provided inside the extension block and on the top of the valve body, the two positioning holes are in the same vertical plane, and the positioning rod is slidably connected inside the positioning holes.

[0007] Furthermore, a spring is fixedly connected to the surface of the sealing gasket, the other end of the spring is fixedly connected to the inside of the sliding groove, and one end of the positioning rod passes through the inside of the spring.

[0008] Furthermore, a rotating shaft is rotatably connected inside the air inlet, a fixed block is fixedly installed on the surface of the rotating shaft, a plurality of connecting rods are fixedly connected to the surface of the fixed block, and blades are fixedly connected to the ends of the connecting rods.

[0009] Furthermore, a second bevel gear is fixedly mounted on one end of the rotating shaft, a threaded rod is rotatably connected to one side of the sliding groove, the sealing gasket is threadedly connected to the surface of the threaded rod, a first bevel gear is fixedly mounted on the end of the threaded rod, and the first bevel gear is meshed with the second bevel gear.

[0010] Furthermore, a guide rod is fixedly installed on the other side of the sliding groove, the sealing gasket is slidably connected to the surface of the guide rod, a rotating groove is opened inside the valve body, and the first bevel gear and the second bevel gear are rotatably connected inside the rotating groove.

[0011] Furthermore, a mounting seat is fixedly mounted on the lower surface of the valve body.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. A sealing gasket is provided, and the spring is set to make the sealing gasket seal the junction between the air inlet and the slide groove and the pressure relief hole. When the medium pressure is too high, the sealing gasket is impacted to move up, and the position of the pressure relief hole is exposed. The medium is discharged from the pressure relief hole through the pressure relief pipe to complete the pressure relief work, and no human care and operation are required.

[0014] 2. When the medium pressure is too high, pressure is applied to the blades, so that the blades rotate and drive the shaft to rotate. The second bevel gear at the end of the shaft engages with the first bevel gear at the end of the threaded rod, so that the threaded rod rotates. The sealing gasket is threadedly connected to the threaded rod, so that the impact effect of the medium can further move the sealing gasket upward. When the pressure is released, the sealing gasket returns to its initial position under the action of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the utility model;

[0017] Figure 3 It is an enlarged schematic diagram of the structure at point A of the utility model.

[0018] Illustrations: 1. Valve body; 11. Sliding groove; 12. Sealing gasket; 13. Positioning rod; 14. Spring; 15. Threaded rod; 16. First bevel gear; 17. Guide rod; 2. Extension block; 21. Positioning hole; 3. Pressure relief pipe; 31. Pressure relief hole; 4. Mounting seat; 5. Rotating shaft; 51. Fixed block; 52. Connecting rod; 53. Blade; 54. Second bevel gear; 55. Rotating groove; 56. Air inlet. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0020] See also Figures 1 to 3 , provided as an embodiment of the utility model, is a safety valve which automatically adjusts pressure, including a valve body 1, wherein the pressure relief work of the medium is performed inside the valve body 1 to control the pressure of the medium, a sealing gasket 12 is slidably connected inside the valve body 1, and the sealing gasket 12 seals the junction between the air inlet 56 and the sliding groove 11 and the pressure relief hole 31, a pressure relief pipe 3 is fixedly connected to the surface of the valve body 1, and the medium is discharged from the pressure relief hole 31 inside the pressure relief pipe 3, and the pressure relief holes 31 are both provided inside the pressure relief pipe 3 and on the surface of the valve body 1, and the two pressure relief holes 31 are in the same horizontal plane, and the sealing gasket 12 is movably fitted with the surface of the pressure relief hole 31, and an air inlet 56 is provided at the bottom of the valve body 1, and the air inlet 56 is connected to the pressure relief hole 31, and the medium enters the valve body 1 from the air inlet 56 to perform pressure relief work.

[0021] Specifically, a sliding groove 11 is opened inside the valve body 1, and a sealing gasket 12 is slidably connected inside the sliding groove 11. A positioning rod 13 is fixedly installed on the surface of the sealing gasket 12. An extension block 2 is fixedly connected to the surface of the valve body 1. Positioning holes 21 are opened inside the extension block 2 and on the top of the valve body 1. The two positioning holes 21 are in the same vertical plane, and the positioning rod 13 is slidably connected inside the positioning hole 21.

[0022] In the embodiment of the utility model, the sealing gasket 12 can move up and down by setting the sliding groove 11, and the sealing gasket 12 can maintain a vertical state during movement to avoid deviation by cooperating with the positioning rod 13 and the positioning hole 21.

[0023] Specifically, a spring 14 is fixedly connected to the surface of the sealing gasket 12 , the other end of the spring 14 is fixedly connected to the inside of the sliding groove 11 , and one end of the positioning rod 13 passes through the inside of the spring 14 .

[0024] In the embodiment of the utility model, by setting the spring 14, after the pressure relief work is completed, the sealing gasket 12 can be squeezed back to the initial position.

[0025] Specifically, the air inlet 56 is rotatably connected to the rotating shaft 5 , a fixing block 51 is fixedly mounted on the surface of the rotating shaft 5 , a plurality of connecting rods 52 are fixedly connected to the surface of the fixing block 51 , and blades 53 are fixedly connected to the ends of the connecting rods 52 .

[0026] In the embodiment of the utility model, by setting the blades 53 , when the medium inside the air inlet 56 impacts, the blades 53 and the rotating shaft 5 are driven to rotate inside the air inlet 56 .

[0027] Specifically, a second bevel gear 54 is fixedly mounted on one end of the rotating shaft 5, a threaded rod 15 is rotatably connected to one side of the sliding groove 11, the sealing gasket 12 is threadedly connected to the surface of the threaded rod 15, and a first bevel gear 16 is fixedly mounted on the end of the threaded rod 15, and the first bevel gear 16 is meshed with the second bevel gear 54.

[0028] In the embodiment of the utility model, through the meshing of the first bevel gear 16 and the second bevel gear 54, the rotation of the shaft 5 can drive the threaded rod 15 to rotate, and the sealing gasket 12 is threadedly connected to the threaded rod 15, so that the sealing gasket 12 can rise or move down.

[0029] Specifically, a guide rod 17 is fixedly installed on the other side of the sliding groove 11 , the sealing gasket 12 is slidably connected to the surface of the guide rod 17 , a rotating groove 55 is opened inside the valve body 1 , and the first bevel gear 16 and the second bevel gear 54 are rotatably connected inside the rotating groove 55 .

[0030] In the embodiment of the utility model, the guide rod 17 makes the upward and downward movement of the sealing gasket 12 more stable, and the rotation groove 55 protects the first bevel gear 16 and the second bevel gear 54 .

[0031] Specifically, a mounting seat 4 is fixedly mounted on the lower surface of the valve body 1 .

[0032] In the embodiment of the utility model, the mounting seat 4 is used to connect the medium pipeline.

[0033] When in use, the medium enters the valve body 1 through the air inlet 56, and the medium applies pressure to the blade 53, so that the blade 53 and the rotating shaft 5 rotate, and the second bevel gear 54 at the end of the rotating shaft 5 engages with the first bevel gear 16 at the end of the threaded rod 15, so that the threaded rod 15 inside the sliding groove 11 rotates, so that the sealing gasket 12 can rise inside the sliding groove 11, and during the rising process, the pressure relief hole 31 is gradually exposed, thereby completing the pressure relief work of the medium. After the pressure relief is completed, under the action of the spring 14, the sealing gasket 12 returns to the initial position and re-seals the intersection of the air inlet 56 and the sliding groove 11.

[0034] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A safety valve for automatically regulating pressure, comprising a valve body (1), characterized in that: A sealing gasket (12) is slidably connected inside the valve body (1), a pressure relief pipe (3) is fixedly connected to the surface of the valve body (1), a pressure relief hole (31) is provided inside the pressure relief pipe (3) and on the surface of the valve body (1), the two pressure relief holes (31) are located in the same horizontal plane, the sealing gasket (12) is movably fitted to the surface of the pressure relief hole (31), and an air inlet (56) is provided at the bottom of the valve body (1), and the air inlet (56) is connected to the pressure relief hole (31).

2. The automatic pressure regulating safety valve according to claim 1, characterized in that: The valve body (1) is provided with a sliding groove (11) inside, the sealing gasket (12) is slidably connected inside the sliding groove (11), a positioning rod (13) is fixedly installed on the surface of the sealing gasket (12), an extension block (2) is fixedly connected to the surface of the valve body (1), and positioning holes (21) are provided inside the extension block (2) and on the top of the valve body (1), the two positioning holes (21) are in the same vertical plane, and the positioning rod (13) is slidably connected inside the positioning holes (21).

3. The automatic pressure regulating safety valve according to claim 2, characterized in that: A spring (14) is fixedly connected to the surface of the sealing pad (12), the other end of the spring (14) is fixedly connected to the inside of the sliding groove (11), and one end of the positioning rod (13) passes through the inside of the spring (14).

4. The automatic pressure regulating safety valve according to claim 3, characterized in that: The air inlet (56) is rotatably connected to a rotating shaft (5), a fixed block (51) is fixedly mounted on the surface of the rotating shaft (5), a plurality of connecting rods (52) are fixedly connected to the surface of the fixing block (51), and blades (53) are fixedly connected to the ends of the connecting rods (52).

5. The automatic pressure regulating safety valve according to claim 4, characterized in that: A second bevel gear (54) is fixedly mounted on one end of the rotating shaft (5); a threaded rod (15) is rotatably connected to one side of the sliding groove (11); the sealing gasket (12) is threadedly connected to the surface of the threaded rod (15); a first bevel gear (16) is fixedly mounted on the end of the threaded rod (15); and the first bevel gear (16) is meshed with the second bevel gear (54).

6. The automatic pressure regulating safety valve according to claim 5, characterized in that: A guide rod (17) is fixedly mounted on the other side of the sliding groove (11), the sealing gasket (12) is slidably connected to the surface of the guide rod (17), a rotating groove (55) is provided inside the valve body (1), and the first bevel gear (16) and the second bevel gear (54) are rotatably connected inside the rotating groove (55).

7. The automatic pressure regulating safety valve according to claim 1, characterized in that: A mounting seat (4) is fixedly mounted on the lower surface of the valve body (1).

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