Anti-blocking safety valve

Abstract

The invention belongs to the technical field of safety valves, and particularly discloses an anti-blocking safety valve which comprises a safety valve body, a feeding groove is formed in the safety valve body, a discharging pipe is fixedly installed on the side face of the feeding groove, and a discharging pipe is arranged in the safety valve body and located below the feeding groove. A blocking assembly is arranged in the safety valve and located above the feeding groove, the blocking assembly blocks the top of the discharging pipe, and a self-cleaning mechanism is installed on the surface of the discharging pipe. Impurities, sediments or pollutants accumulated on key components in the safety valve can be removed, so that normal operation and reliability of the valve are kept, the working reliability of the valve is improved, the service life of the valve is prolonged, the system safety of the valve is improved, and meanwhile the device reduces the requirement for manual intervention.

Description

Technical Field

[0001] The present invention belongs to the field of safety valves, and specifically discloses a clog - proof safety valve. Background Art

[0002] A safety valve is an automatic valve mainly used for over - pressure protection in equipment, devices, and pipelines. When the medium pressure in the system exceeds the set value, the safety valve will automatically open to discharge the excess medium to reduce the system pressure and prevent the equipment or pipeline from being damaged due to over - pressure. When the pressure returns to normal, the safety valve will automatically close to prevent the medium from flowing out continuously.

[0003] For the existing clog - proof safety valves, after working, they need to be disassembled and cleaned regularly. This not only increases the labor cost but also may cause equipment downtime. Moreover, disassembly and reinstallation will make these components undergo additional stress changes. Frequent stress changes will cause the material to have fatigue phenomena, reducing the strength and toughness of the material, making the components more likely to appear damaged such as cracks and fractures. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to propose a clog - proof safety valve to solve the problems of the prior art that after working, it needs to be disassembled and cleaned regularly, which not only increases the labor cost but also may cause equipment downtime. Moreover, disassembly and reinstallation will make these components undergo additional stress changes. Frequent stress changes will cause the material to have fatigue phenomena, reducing the strength and toughness of the material, making the components more likely to appear damaged such as cracks and fractures.

[0005] To achieve the above - mentioned purpose, the present invention provides a clog - proof safety valve, including a safety valve. A feeding groove is arranged inside the safety valve. A discharge pipe is fixedly installed on the side of the feeding groove. A discharge - into pipe is arranged below the feeding groove inside the safety valve. A plugging component is arranged above the feeding groove inside the safety valve, and the plugging component plugs the top of the discharge - into pipe. A self - cleaning mechanism is installed on the surface of the discharge pipe. The self - cleaning mechanism includes a rectangular block installed on the surface of the discharge pipe. A first fixed pipe is arranged at the top of the rectangular block, and a second fixed pipe is arranged at the bottom of the rectangular block. An input pipe is installed on the surface of the first fixed pipe, and an output pipe is installed on the surface of the second fixed pipe.

[0006] In the above technical solution, preferably, the discharge pipe is provided with a cylindrical discharge port corresponding to the feeding trough. A rectangular groove is provided inside the rectangular block, and the rectangular groove is fitted and installed in the middle of the cylindrical discharge port. An activity pipe is movably installed inside the first fixed pipe. A first sealing plate is fixedly installed at the bottom of the activity pipe, and the first sealing plate is movably installed in the rectangular groove. When the activity pipe is completely received inside the first fixed pipe, the first sealing plate is tightly attached to the top end of the rectangular groove.

[0007] In the above technical solution, preferably, a discharge trough is opened at the bottom of the activity pipe near one end of the safety valve, and an activity side trough is opened at the top of the activity pipe far from one end of the safety valve. A connecting pipe is installed inside the activity pipe. The input pipe is located in the middle of the first fixed pipe, and the surface of the input pipe movably penetrates through the activity side trough and is connected to the connecting pipe.

[0008] In the above technical solution, preferably, when the activity pipe is completely received inside the first fixed pipe, the bottom of the connecting pipe is tightly attached to the surface of the first sealing plate.

[0009] In the above technical solution, preferably, a cylinder is provided above the first fixed pipe, and the output end of the cylinder is connected to the top of the activity pipe.

[0010] In the above technical solution, preferably, a cylindrical groove is provided inside the second fixed pipe, and the cylindrical groove is connected to the output pipe, and the output pipe is located at the top of the cylindrical groove. A first spring is installed inside the cylindrical groove, and the top end of the first spring is connected to a second sealing surface. The second sealing surface is movably installed inside the cylindrical groove. A convex block is fixedly installed at the top of the second sealing surface. A square groove is opened at the bottom end of the rectangular groove, and the square groove is directly above the cylindrical groove, and the linear distance of the diagonal of the square groove is the same as the diameter of the cylindrical groove. The convex block is movably installed inside the square groove. Side grooves are opened on the inner wall of the square groove, and an auxiliary baffle is installed inside the side grooves through a rotating shaft. An arc spring is provided inside the side grooves and below the auxiliary baffle, and the end of the arc spring is connected to the auxiliary baffle. A supporting trough is opened at one end of the convex block close to the auxiliary baffle, and the end of the auxiliary baffle is arranged inside the supporting trough. The auxiliary baffle is set as a rectangle, and the auxiliary baffle and the convex block seal the square groove.

[0011] In the above technical solution, preferably, a filter plate is fixedly installed at the top of the convex block. The width of the filter plate is the same as the width of the convex block, and a plurality of filter holes are opened on the surface of the filter plate.

[0012] In the above technical solution, preferably, a long plate is fixedly installed at the top of the filter plate. The width of the long plate is the same as the width of the rectangular groove. A resisting block is fixedly installed at the bottom of the first sealing plate. The resisting block is directly above the long plate, and the width of the resisting block is the same as the width of the long plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] By installing a self-cleaning mechanism on the surface of the discharge pipe, the cleaning liquid will flow into the cylindrical discharge port and the feeding groove through the discharge slot, and then be discharged from the output pipe. This device can remove impurities, deposits or pollutants accumulated on the valve core, valve seat or other key components, thereby maintaining the normal operation and reliability of the valve, improving the working reliability, service life and system safety of the valve. At the same time, this device reduces the need for manual intervention, reduces operating costs, reduces the wear of valve components by impurities, reduces the frequent disassembly and reinstallation of components. The self-cleaning function extends the service life of the safety valve and also protects other equipment connected to it, further reducing the cost of equipment replacement and maintenance, bringing more convenience and benefits to industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 is a schematic diagram of the overall structure of another perspective of the present invention;

[0017] Figure 3 is a main view structural cross-sectional view of the safety valve of the present invention;

[0018] Figure 4 is of the present invention Figure 3 an enlarged view of part A in;

[0019] Figure 5 is of the present invention Figure 3 an enlarged view of part B in;

[0020] Figure 6 is a structural cross-sectional view of the self-cleaning mechanism of the present invention;

[0021] Figure 7 is a schematic diagram of the internal structure of the rectangular groove of the present invention.

[0022] In the figure: 1. Safety valve; 2. Discharge pipe; 3. Drain-in pipe; 4. Plugging assembly; 5. Self-cleaning mechanism; 6. First fixed pipe; 7. Second fixed pipe; 8. Rectangular block; 9. Movable pipe; 10. First plugging plate; 11. Movable side groove; 12. Discharge chute; 13. Connecting pipe; 14. Input pipe; 15. Rectangular groove; 16. Bracing block; 17. Cylindrical groove; 18. Square groove; 19. First spring; 20. Second plugging surface; 21. Protrusion; 22. Bracing and towing groove; 23. Side groove; 24. Auxiliary baffle; 25. Arc spring; 26. Filter plate; 27. Long plate; 28. Output pipe; 29. Cylinder; 30. Filter hole. Detailed implementation manners

[0023] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0024] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed below.

[0025] As Figures 1-7 shown, a clogging-proof safety valve includes a safety valve 1. A feeding chute is arranged inside the safety valve 1. A discharge pipe 2 is fixedly installed on the side of the feeding chute. A drain-in pipe 3 is arranged inside the safety valve 1 and below the feeding chute. A plugging assembly 4 is arranged inside the safety valve 1 and above the feeding chute. The plugging assembly 4 plugs the top of the drain-in pipe 3. A self-cleaning mechanism 5 is installed on the surface of the discharge pipe 2. The self-cleaning mechanism 5 includes a rectangular block 8. The rectangular block 8 is installed on the surface of the discharge pipe 2. A first fixed pipe 6 is arranged at the top of the rectangular block 8. A second fixed pipe 7 is arranged at the bottom of the rectangular block 8. An input pipe 14 is installed on the surface of the first fixed pipe 6. An output pipe 28 is installed on the surface of the second fixed pipe 7. By installing the self-cleaning mechanism 5 on the surface of the discharge pipe 2, impurities, sediments or pollutants accumulated on the valve core, valve seat or other key components can be removed, so as to keep the normal operation and reliability of the valve, improve the working reliability, service life and system safety of the valve, and at the same time reduce the maintenance cost and downtime.

[0026] The discharge pipe 2 is provided with a cylindrical discharge port corresponding to the feeding trough. The gas or liquid discharged from the safety valve 1 can be discharged to the discharge port through the feeding trough. A rectangular groove 15 is arranged inside the rectangular block 8, and the rectangular groove 15 is fitted and installed in the middle of the cylindrical discharge port. An activity pipe 9 is movably installed inside the first fixed pipe 6. A first blocking plate 10 is fixedly installed at the bottom of the activity pipe 9, and the first blocking plate 10 is movably installed in the rectangular groove 15. When the activity pipe 9 is completely received inside the first fixed pipe 6, the first blocking plate 10 is closely attached to the top end of the rectangular groove 15. After the activity pipe 9 is received inside the first fixed pipe 6, the first blocking plate 10 can block the bottom of the first fixed pipe 6, effectively preventing the leakage of liquid, gas or other media, ensuring the sealing performance of the system, with a relatively compact structure and reducing the external occupied space.

[0027] A discharge trough 12 is opened at the bottom of the end of the activity pipe 9 close to the safety valve 1, and an activity side trough 11 is opened at the top of the end of the activity pipe 9 far from the safety valve 1. A connecting pipe 13 is installed inside the activity pipe 9. The input pipe 14 is located in the middle of the first fixed pipe 6, and the surface of the input pipe 14 movably penetrates through the activity side trough 11 and is connected to the connecting pipe 13. When the activity pipe 9 extends out of the first fixed pipe 6, the bottom of the activity pipe 9 moves into the rectangular groove 15, and the discharge trough 12 will move into the rectangular groove 15. At this time, the staff inputs cleaning liquid into the connecting pipe 13 through the input pipe 14, and the cleaning liquid will then flow into the inside of the cylindrical discharge port and the feeding trough through the discharge trough 12. Under the action of the activity side trough 11, the input pipe 14 is connected to the connecting pipe 13 through the activity side trough 11. The movement of the activity pipe 9 will not affect the input pipe 14 and the connecting pipe 13, and stable transmission can be maintained even when the activity pipe 9 moves, reducing the possibility of leakage or detachment.

[0028] When the activity pipe 9 is completely received inside the first fixed pipe 6, the bottom of the connecting pipe 13 is closely attached to the surface of the first blocking plate 10. After the activity pipe 9 is received inside the first fixed pipe 6, the sealing performance and stability of the connecting pipe 13 are ensured, and the occurrence of water leakage is avoided.

[0029] A cylinder 29 is arranged above the first fixed pipe 6, and the output end of the cylinder 29 is connected to the top of the activity pipe 9. The cylinder 29 is connected to the top of the activity pipe 9 as a driving device to achieve high-precision motion control.

[0030] Inside the second fixed pipe 7, there is a cylindrical groove 17. The cylindrical groove 17 is connected to the output pipe 28, and the output pipe 28 is located at the top of the cylindrical groove 17. Inside the cylindrical groove 17, a first spring 19 is installed. The top end of the first spring 19 is connected to a second sealing surface 20. The second sealing surface 20 is movably installed inside the cylindrical groove 17. At the top of the second sealing surface 20, a convex block 21 is fixedly installed. At the bottom end of the rectangular groove 15, a square groove 18 is opened. The square groove 18 is directly above the cylindrical groove 17, and the linear distance of the diagonal of the square groove 18 is the same as the diameter of the cylindrical groove 17. The convex block 21 is movably installed inside the square groove 18. On the inner wall of the square groove 18, a side groove 23 is opened. Inside the side groove 23, an auxiliary baffle 24 is installed through a rotating shaft. Inside the side groove 23 and below the auxiliary baffle 24, an arc spring 25 is provided. The end of the arc spring 25 is connected to the auxiliary baffle 24. At one end of the convex block 21 close to the auxiliary baffle 24, a supporting groove 22 is opened. The end of the auxiliary baffle 24 is arranged inside the supporting groove 22. The auxiliary baffle 24 is set as a rectangle. The auxiliary baffle 24 and the convex block 21 block the square groove 18. Through the elastic force of the first spring 19, the second sealing surface 20 can be lifted upward. The second sealing surface 20 will move to the topmost end of the cylindrical groove 17, and the convex block 21 will move into the square groove 18. At this time, the supporting groove 22 has a supporting effect on the end of the auxiliary baffle 24. The auxiliary baffle 24 and the convex block 21 can block the notch of the square groove 18. At the same time, the rectangular shape of the auxiliary baffle 24 closely cooperates with the inner wall of the square groove 18, further improving the accuracy and reliability of the blockage.

[0031] At the top of the convex block 21, a filter plate 26 is fixedly installed. The width of the filter plate 26 is the same as the width of the convex block 21. On the surface of the filter plate 26, a plurality of filter holes 30 are opened. The filter plate 26 mainly plays the roles of filtering impurities, improving the purity of the medium, evenly distributing fluids or gases, preventing blockages, and enhancing the structural stability. It not only protects the key components inside the equipment, but also improves the operating efficiency and reliability of the equipment. At the same time, it is convenient for maintenance and cleaning.

[0032] At the top of the filter plate 26, a long plate 27 is fixedly installed. The width of the long plate 27 is the same as the width of the rectangular groove 15. At the bottom of the first sealing plate 10, a resisting block 16 is fixedly installed. The resisting block 16 is directly above the long plate 27, and the width of the resisting block 16 is the same as the width of the long plate 27. When the movable pipe 9 moves downward, the resisting block 16 exerts a downward pressure on the long plate 27. The filter plate 26 is pressed into the cylindrical groove 17. The bottom of the long plate 27 closely adheres to the bottom of the rectangular groove 15. At this time, the middle part of the rectangular groove 15 is divided by the long plate 27, the resisting block 16 and the movable pipe 9, and the middle end of the cylindrical discharge port is blocked, facilitating the cleaning of the inside of the cylindrical discharge port and the feeding groove.

[0033] Working principle: First, in the normal working state, the sealing component 4 of the safety valve 1 is tightly combined with the sealing surface of the discharge pipe 3 to maintain the system pressure within the specified range. At this time, the pressing force of the spring or the pressure of the weight through the lever is balanced with the medium pressure, and the sealing component 4 remains in the closed state. When the medium pressure in the system exceeds the set value, the spring is compressed or the weight is lifted, and the sealing component 4 loses balance and leaves the discharge pipe 3. As the medium is discharged, the pressure in the system gradually decreases. When the pressure drops below the specified value, the pressing force of the spring or the pressure of the weight through the lever is greater than the medium pressure again, the sealing component 4 resets, and the sealing surface is re-sealed, and the system returns to the normal sealing state. After work, there will be a lot of dirt remaining in the cylindrical discharge port and the feeding trough. Subsequently, the cylinder 29 drives the movable pipe 9 to move downward. The input pipe 14 is connected to the connecting pipe 13 through the movable side groove 11. The movement of the movable pipe 9 will not affect the input pipe 14 and the connecting pipe 13, and the bottom of the movable pipe 9 will move into the rectangular groove 15. The discharge trough 12 will move into the rectangular groove 15. At the same time, the abutting block 16 has a downward pressure on the long plate 27, and the filter plate 26 is pressed into the interior of the cylindrical groove 17. The bottom of the long plate 27 is closely attached to the bottom of the rectangular groove 15. At this time, the middle part of the rectangular groove 15 is divided by the long plate 27, the abutting block 16 and the movable pipe 9, and the second sealing surface 20 will move below the output pipe 28, and the middle end of the cylindrical discharge port is blocked. Then, cleaning liquid is injected into the connecting pipe 13 through the input pipe 14. The cleaning liquid will flow into the cylindrical discharge port and the feeding trough through the discharge trough 12. Then, the cleaning liquid has a downward pressure on the auxiliary baffle 24, and finally the cleaning liquid will be discharged from the output pipe 28, which can remove impurities, sediments or pollutants accumulated on the valve core, valve seat or other key components, so as to maintain the normal operation and reliability of the valve.

[0034] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An anti-clogging safety valve, comprising a safety valve (1), characterized in that: A feed trough is provided inside the safety valve (1), a discharge pipe (2) is fixedly installed on the side of the feed trough, a discharge pipe (3) is provided inside the safety valve (1) and below the feed trough, a blocking component (4) is provided inside the safety valve (1) and above the feed trough, the blocking component (4) blocks the top of the discharge pipe (3), a self-cleaning mechanism (5) is installed on the surface of the discharge pipe (2), the self-cleaning mechanism (5) comprises a rectangular block (8), the rectangular block (8) is installed on the surface of the discharge pipe (2), a first fixed pipe (6) is provided on the top of the rectangular block (8), a second fixed pipe (7) is provided on the bottom of the rectangular block (8), an input pipe (14) is installed on the surface of the first fixed pipe (6), and an output pipe (28) is installed on the surface of the second fixed pipe (7).

2. The anti-clogging safety valve according to claim 1, characterized in that: The discharge pipe (2) is provided with a cylindrical discharge port corresponding to the feed trough, the interior of the rectangular block (8) is provided with a rectangular groove (15), and the rectangular groove (15) is installed in the middle of the cylindrical discharge port. A movable tube (9) is movably installed inside the first fixed tube (6), and a first sealing plate (10) is fixedly installed at the bottom of the movable tube (9). The first sealing plate (10) is movably installed in the rectangular groove (15). When the movable tube (9) is completely received in the interior of the first fixed tube (6), the first sealing plate (10) is tightly attached to the top of the rectangular groove (15).

3. The anti-clogging safety valve according to claim 2, characterized in that: A discharge trough (12) is provided at the bottom of the movable tube (9) at one end close to the safety valve (1), and a movable side groove (11) is provided at the top of the movable tube (9) at one end away from the safety valve (1). A connecting tube (13) is installed inside the movable tube (9), and the input tube (14) is located in the middle of the first fixed tube (6), and the surface of the input tube (14) is movable through the movable side groove (11) to be connected to the connecting tube (13).

4. The anti-clogging safety valve according to claim 3, characterized in that: When the movable tube (9) is completely received inside the first fixed tube (6), the bottom of the connecting tube (13) is tightly attached to the surface of the first sealing plate (10).

5. The anti-clogging safety valve according to claim 4, characterized in that: A cylinder (29) is arranged above the first fixed tube (6), and an output end of the cylinder (29) is connected to the top of the movable tube (9).

6. The anti-clogging safety valve according to claim 5, characterized in that: A cylindrical groove (17) is provided inside the second fixed tube (7), the cylindrical groove (17) is connected to the output tube (28), and the output tube (28) is located at the top of the cylindrical groove (17), a first spring (19) is installed inside the cylindrical groove (17), the top end of the first spring (19) is connected to a second blocking surface (20), the second blocking surface (20) is movably installed inside the cylindrical groove (17), a protrusion (21) is fixedly installed on the top of the second blocking surface (20), a square groove (18) is provided at the bottom end of the rectangular groove (15), the square groove (18) is located directly above the cylindrical groove (17), and the straight-line distance between the diagonal of the square groove (18) and the diameter of the cylindrical groove (17) is equal to the diameter of the cylindrical groove (17). The convex block (21) is movably mounted in the square groove (18), the inner wall of the square groove (18) is provided with a side groove (23), an auxiliary baffle (24) is installed inside the side groove (23) through a rotating shaft, an arc spring (25) is arranged inside the side groove (23) and below the auxiliary baffle (24), the end of the arc spring (25) is connected to the auxiliary baffle (24), a support groove (22) is arranged at one end of the convex block (21) close to the auxiliary baffle (24), the end of the auxiliary baffle (24) is arranged inside the support groove (22), the auxiliary baffle (24) is arranged in a rectangular shape, and the auxiliary baffle (24) and the convex block (21) block the square groove (18).

7. The anti-clogging safety valve according to claim 6, characterized in that: A filter plate (26) is fixedly mounted on the top of the protrusion (21); the width of the filter plate (26) is the same as the width of the protrusion (21); and a plurality of filter holes (30) are formed on the surface of the filter plate (26).

8. The anti-clogging safety valve according to claim 7, characterized in that: A long plate (27) is fixedly mounted on the top of the filter plate (26), and the width of the long plate (27) is the same as the width of the rectangular groove (15); a stop block (16) is fixedly mounted on the bottom of the first blocking plate (10), and the stop block (16) is located directly above the long plate (27), and the width of the stop block (16) is the same as the width of the long plate (27).

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