Safety valve

Abstract

The utility model relates to the field of safety valves, in particular to a safety valve which comprises a safety valve body, the safety valve body comprises a main pipe and a pressure relief pipe, a pressure relief opening is formed in the side wall of the pressure relief pipe, a ceramic valve element is arranged at the joint of the main pipe and the pressure relief pipe, and a first silica gel gasket is slidably connected into the pressure relief pipe. A pressing cap is arranged in the pressure relief pipe and connected with a small stainless steel gasket through an outer leakage spring, the small stainless steel gasket abuts against the first silica gel gasket, and the outer leakage spring is always in a compressed state and drives the first silica gel gasket to seal the ceramic valve element. The safety valve has the effect of reducing the corrosion speed of the valve element of the safety valve.

Description

Technical Field

[0001] This application relates to the field of safety valves, and more particularly to a safety valve. Background Technology

[0002] A safety valve is a special valve whose opening and closing element is normally closed under external force. When the pressure of the medium in the equipment or pipeline rises above a specified value, it discharges the medium to the outside of the system to prevent the pressure of the medium in the pipeline or equipment from exceeding the specified value. Safety valves belong to the category of automatic valves and are mainly used on boilers, pressure vessels, and pipelines to control the pressure to not exceed the specified value, playing an important role in protecting personal safety and equipment operation.

[0003] Traditional safety valves typically have valve cores made of metal, which are prone to rust and corrosion after prolonged use, leading to damage to the safety valve. Utility Model Content

[0004] In order to slow down the corrosion rate of the valve core of the safety valve, this application provides a safety valve.

[0005] The safety valve provided in this application adopts the following technical solution: A safety valve includes a safety valve body, the safety valve body includes a main pipe and a pressure relief pipe, the side wall of the pressure relief pipe is provided with a pressure relief port, a ceramic valve core is provided at the connection between the main pipe and the pressure relief pipe, a first silicone gasket is slidably connected inside the pressure relief pipe, a compression cap is provided inside the pressure relief pipe, the compression cap is connected to a small stainless steel gasket through an external leakage spring, the small stainless steel gasket is pressed against the first silicone gasket, the external leakage spring is always in a compressed state and drives the first silicone gasket to seal the ceramic valve core.

[0006] By adopting the above technical solution, when the pressure of the liquid in the main pipe is greater than the elastic force of the external venting spring, the external venting spring is compressed, causing the stainless steel gasket and silicone gasket to separate. The liquid in the main pipe flows through the ceramic valve core into the pressure relief pipe and is discharged through the pressure relief port, thus maintaining the pressure in the main pipe within a certain range. Compared with traditional metal valve cores, the ceramic valve core has higher hardness, stronger wear resistance, and resistance to high-pressure water flow impact, which can effectively reduce wear and scratches and extend the service life of the product. The ceramic disc can remain smooth and durable in humid, acidic and alkaline environments, and is suitable for various water qualities. The ceramic has high and low temperature resistance, is not easy to deform and crack, has good stability, and is suitable for use in various temperatures.

[0007] Optionally, a rubber seat is movably connected inside the pressure relief pipe, and a pull rod is coaxially slidably connected inside the pressure relief pipe. The lower end of the pull rod is engaged with the rubber seat and used to drive the rubber seat to move. One end of the rubber seat is pressed against a small stainless steel gasket, and the other end of the rubber seat is pressed against an external relief spring.

[0008] By adopting the above technical solution, when manual pressure relief is required, the operator pulls the lever, which moves the rubber seat so that the rubber seat no longer applies pressure to the stainless steel gasket. Under the action of water pressure, the stainless steel gasket separates from the silicone gasket, allowing the liquid in the main pipe to flow into the pressure relief pipe, thus completing the manual pressure relief.

[0009] Optionally, one end of the pull rod extends out of the pressure relief pipe, and the end of the pull rod is provided with a handle for moving the pull rod.

[0010] By adopting the above technical solution, the operation is relatively convenient as the lever is moved by the handle.

[0011] Optionally, a rivet is rotatably connected to one end of the pull rod extending out of the pressure relief pipe. The handle includes a locking part and a handle part. The locking part is fixedly connected to the rivet. When the handle is in the closed safety valve state, the distance between the end of the locking part away from the handle part and the rivet is greater than the distance between the rivet and the pressure relief pipe.

[0012] By adopting the above technical solution, when the handle is rotated from the closed state to the open state, since the distance between the end of the locking part away from the handle and the rivet is greater than the distance between the rivet and the pressure relief pipe, the locking part will drive the rivet to move away from the main pipe when it rotates. When the rivet moves, it will drive the pull rod to move, thereby completing the active pressure relief.

[0013] Optionally, the side wall of the pull rod is provided with a sliding groove that runs through the pull rod. The sliding groove is provided along the length of the pull rod, and the rivet is slidably connected in the sliding groove.

[0014] By adopting the above technical solution, the sliding groove provides movement space for the tie rod.

[0015] Optionally, the end of the pressure relief pipe is provided with a sealing seat for sealing the pressure relief pipe, and the end of the sealing seat away from the main pipe is provided with a centrally located stainless steel sheet, and the pull rod passes through the sealing seat and the centrally located stainless steel sheet.

[0016] By adopting the above technical solution, the sealing seat is used to seal the end of the pressure relief pipe, so that the liquid flows out from the pressure relief port when the pressure is released, and the stainless steel sheet with the central hole plays a supporting role.

[0017] Optionally, the outer wall of the ceramic valve core is provided with a limiting ring, which is configured to engage with the main pipe.

[0018] By adopting the above technical solution, the limiting ring plays a role in reducing the ceramic valve core from falling into the main pipe.

[0019] Optionally, the main pipe is equipped with an internal leakage filter.

[0020] By adopting the above technical solution, the internal leakage filter screen can reduce the occurrence of impurities in the liquid flowing into the pressure relief pipe and causing blockage of the pressure relief port.

[0021] Optionally, the main pipe is provided with a one-way valve core, a second silicone gasket, a spring seat, and an internal leakage spring, wherein the internal leakage spring is used to drive the one-way valve core to press against the water inlet of the main pipe.

[0022] By adopting the above technical solution, the one-way valve core ensures that the liquid in the main pipe is retained and fixed, reducing the occurrence of backflow.

[0023] Optionally, the main pipe is provided with an opening spring and a rotating handle for controlling the tension of the opening spring. The opening spring is connected to the valve core of the one-way valve and is used to drive the valve core of the one-way valve to press against the inlet of the main pipe.

[0024] By adopting the above technical solution, when the pressure relief valve is not needed, turning the handle causes the opening spring to drive the valve core of the one-way valve to press against the inlet of the main pipe, thereby reducing the amount of liquid flowing into the safety valve.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] Compared to traditional metal valve cores, ceramic valve cores have higher hardness and stronger wear resistance. They are resistant to high-pressure water flow impact, effectively reducing wear and scratches and extending product life. Ceramic discs can remain smooth and durable in humid, acidic, and alkaline environments, making them suitable for various water qualities. Ceramic valve cores also have high and low temperature resistance, are not easily deformed or cracked, and have good stability, making them suitable for use at various temperatures.

[0027] When the handle is turned from the closed state to the open state, the distance between the end of the locking part away from the handle and the rivet is greater than the distance between the rivet and the pressure relief pipe. This causes the locking part to move away from the main pipe when it is turned. The movement of the rivet causes the pull rod to move, thereby completing the active pressure relief. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a safety valve according to an embodiment of this application.

[0029] Figure 2 This is a cross-sectional view of a safety valve according to an embodiment of this application.

[0030] Figure 3 This is a schematic diagram of the rotating handle of a safety valve according to an embodiment of this application.

[0031] Figure 4 This is a schematic diagram of the ceramic valve core of a safety valve according to an embodiment of this application.

[0032] Reference numerals: 1. Handle; 101. Handle part; 102. Locking part; 2. Rivet; 3. Pull rod; 301. Sliding groove; 4. Stainless steel sheet with central hole; 5. O-ring 7X1.5; 6. O-ring 15X1.2; 7. Sealing seat; 8. Compression cap; 9. External leakage spring; 10. Rubber seat; 11. Small stainless steel gasket; 12. First silicone gasket; 13. Corrosion-resistant valve core pressure cap; 14. Ceramic valve core; 141. Limiting ring; 15. O-ring 10X1.5; 16. Safety valve body; 161. Main pipe; 1611. Inlet; 162. Pressure relief pipe; 1621. Pressure relief port; 17. Internal leakage filter screen; 18. Opening spring; 19. Internal leakage spring; 20. Spring seat; 21. Check valve core; 22. Second silicone gasket; 23. Rotating handle. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0034] This application discloses a safety valve. (Refer to...) Figure 1 , Figure 2 as well as Figure 3 A safety valve includes a safety valve body 16, which includes a main pipe 161 and a pressure relief pipe 162 connected perpendicularly to each other. One end of the main pipe 161 has an inlet 1611, and the other end is equipped with a rotating handle 23. A second silicone gasket 22 and a spring seat 20 are installed inside the main pipe 161. The spring seat 20 is located at the end of the second silicone gasket 22 away from the inlet 1611. A one-way valve core 21 is coaxially slidably connected inside the main pipe 161. When the one-way valve core 21 presses against the second silicone gasket 22, the inlet 1611 opens; when the one-way valve core 21 presses against the inlet 1611... When the pressure relief valve is closed, the inlet 1611 is closed. The spring seat 20 is equipped with an internal leakage spring. The internal leakage spring is sleeved on the one-way valve core 21 and is used to drive the one-way valve core 21 to press against the inlet 1611, thereby realizing the one-way flow of liquid in the main pipe 161. The rotating handle 23 is connected to the opening spring 18. The opening spring 18 is sleeved on the one-way valve core 21 and is used to drive the one-way valve core 21 to press against the inlet 1611 of the main pipe 161. When the pressure relief valve is not needed, the opening spring 18 is turned by rotating the handle 23 to drive the one-way valve core 21 to press against the inlet 1611 of the main pipe 161, thereby reducing the amount of liquid flowing into the safety valve.

[0035] Reference Figure 1 , Figure 2 as well as Figure 3The pressure relief pipe 162 has a pressure relief port 1621 on its side wall. A ceramic valve core 14 is installed at the connection between the main pipe 161 and the pressure relief pipe 162. The ceramic valve core 14 is fitted with a limit ring 141. The limit ring 141 is pressed against the main pipe 161 by an O-ring 10X1.515, which reduces the ceramic valve core 14 from falling into the main pipe 161. A first silicone gasket 12 is pressed against the upper end of the main pipe 161, which acts as a seal. A small stainless steel gasket 11 is pressed against the end of the first silicone gasket 12 away from the main pipe 161. A rubber seat 10 is pressed against the end of the small stainless steel gasket 11 away from the first silicone gasket 12. The 10-piece set is connected with a pull rod 3, which is slidably connected to the pressure relief pipe 162 on the same axis. The pull rod 3 is locked to the rubber seat 10 and is used to move the rubber seat 10. A pressure cap 8 is installed inside the pressure relief pipe 162. The pressure cap 8 is connected to the rubber seat 10 through an external relief spring 9. The pressure cap 8 is always in a compressed state and is used to drive the silicone gasket to press against the ceramic valve core 14. When the water pressure in the main pipe 161 is greater than the pressure of the external relief spring 9, the external relief spring 9 is compressed, causing the silicone gasket to separate from the ceramic valve core 14, so that the liquid in the main pipe 161 is discharged from the pressure relief pipe 162, maintaining pressure balance. An internal leakage filter screen 17 is installed inside the main pipe 161 to filter impurities.

[0036] Reference Figure 1 , Figure 2 as well as Figure 3 Figure 1 Figure 2 Figure 3 A sealing seat 7 is installed at the end of the pressure relief pipe 162 away from the main pipe 161. The two ends of the sealing seat 7 are respectively abutted against the pressure relief pipe 162 by O-rings 7X1.55 and 15X1.26. A centrally shaped stainless steel sheet 4 is installed at the end of the sealing seat 7 away from the main pipe 161. The pull rod 3 extends out of the pressure relief pipe 162 through the sealing seat 7 and the centrally shaped stainless steel sheet 4. A handle 1 for moving the pull rod 3 is installed at the end of the pull rod 3, thereby realizing the active pressure relief of the safety valve. The handle 1 includes a locking part 102 and a handle part 101. A sliding groove 301 is provided through the pull rod 3 on the side wall of the pull rod 3. The sliding groove 301 extends along the pull rod. 3. The sliding groove 301 is slidably connected to a rivet 2. The locking part 102 is fixedly connected to the rivet 2. When the handle is in the closed pressure relief valve state, the distance between the end of the locking part 102 away from the handle part 101 and the rivet 2 is greater than the distance between the rivet 2 and the pressure relief pipe 162. When the handle 1 is rotated from the closed state to the open state, since the distance between the end of the locking part 102 away from the handle part 101 and the rivet 2 is greater than the distance between the rivet 2 and the pressure relief pipe 162, the locking part 102 will drive the rivet 2 to move in the direction away from the main pipe 161 when it rotates. When the rivet 2 moves, it drives the pull rod 3 to move, thereby completing the active pressure relief.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A safety valve, comprising a safety valve body (16), the safety valve body (16) comprising a main pipe (161) and a pressure relief pipe (162), the side wall of the pressure relief pipe (162) being provided with a pressure relief port (1621), a ceramic valve core (14) being provided at the connection between the main pipe (161) and the pressure relief pipe (162), a first silicone gasket (12) being slidably connected inside the pressure relief pipe (162), a pressure cap (8) being provided inside the pressure relief pipe (162), the pressure cap (8) being connected to a small stainless steel gasket (11) via an external relief spring (9), the small stainless steel gasket (11) being pressed against the first silicone gasket (12), the external relief spring (9) being always in a compressed state and driving the first silicone gasket (12) to close the ceramic valve core (14).

2. A safety valve according to claim 1, characterized in that: A rubber seat (10) is movably connected inside the pressure relief pipe (162). A pull rod (3) is coaxially slidably connected inside the pressure relief pipe (162). The lower end of the pull rod (3) is engaged with the rubber seat (10) and used to drive the rubber seat (10) to move. One end of the rubber seat (10) is pressed against a small stainless steel gasket (11), and the other end of the rubber seat (10) is pressed against an external relief spring (9).

3. A safety valve according to claim 2, characterized in that: One end of the pull rod (3) extends out of the pressure relief pipe (162), and the end of the pull rod (3) is provided with a handle (1) for moving the pull rod (3).

4. A safety valve according to claim 3, characterized in that: The pull rod (3) has a rivet (2) rotatably connected to one end of the pressure relief pipe (162). The handle (1) includes a locking part (102) and a handle part (101). The locking part (102) is fixedly connected to the rivet (2). When the handle (1) is in the closed safety valve state, the distance between the locking part (102) away from the handle part (101) and the rivet (2) is greater than the distance between the rivet (2) and the pressure relief pipe (162).

5. A safety valve according to claim 4, characterized in that: The side wall of the pull rod (3) is provided with a sliding groove (301) that passes through the pull rod (3). The sliding groove (301) is provided along the length direction of the pull rod (3), and the rivet (2) is slidably connected in the sliding groove (301).

6. A safety valve according to claim 3, characterized in that: The end of the pressure relief pipe (162) is provided with a sealing seat (7) for sealing the pressure relief pipe (162). The end of the sealing seat (7) away from the main pipe (161) is provided with a centrally shaped stainless steel sheet (4). The pull rod (3) is provided through the sealing seat (7) and the centrally shaped stainless steel sheet (4).

7. A safety valve according to claim 1, characterized in that: The outer wall of the ceramic valve core (14) is provided with a limiting ring (141), which is engaged with the main pipe (161).

8. A safety valve according to claim 1, characterized in that: The main tube (161) is equipped with an internal leakage filter (17).

9. A safety valve according to claim 1, characterized in that: The main pipe (161) is provided with a one-way valve core (21), a second silicone gasket (22), a spring seat (20) and an internal leakage spring (19). The internal leakage spring (19) is used to drive the one-way valve core (21) to press against the water inlet (1611) of the main pipe (161).

10. A safety valve according to claim 9, characterized in that: The main pipe (161) is provided with an opening spring (18) and a rotating handle (23) for controlling the tension of the opening spring (18). The opening spring (18) is connected to the one-way valve core (21) and is used to drive the one-way valve core (21) to press against the water inlet (1611) of the main pipe (161).

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