Safety valve body based on safety pressure relief

Abstract

The invention relates to the technical field of safety valves, in particular to a safety valve body based on safety pressure relief, which comprises a valve body, a discharge pipe communicated with the valve body, a valve cover and a valve seat provided with an adjusting ring on the surface, the supporting disc is fixedly connected to the inner wall of the valve body, the guide sleeve fixedly penetrates through the supporting disc, the force application mechanism is installed at the top of the supporting disc, and a recoil disc is arranged in the guide sleeve in a sliding fit mode; the joint between the recoil disc and the adjusting ring can be sealed through the sealing mechanism so as to guarantee the sealing effect of the valve seat, in addition, when the internal pressure of the valve body is too large, excessive media can be discharged through the auxiliary pipe, so that the pressure relief efficiency of the valve body is improved, and the problem that when part of existing safety valves are used, the pressure is too large is solved. A sealing line between the valve clack and the valve seat can influence normal use of the safety valve, and the normal use of the valve body can be influenced as the pressure in the valve body is too large and cannot be released in time.

Description

Technical Field

[0001] The present invention relates to the technical field of safety valves, and in particular to a safety valve body based on safe pressure relief. Background Art

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

[0003] At present, leakage is one of the most common faults of some safety valves when they are in use. The most common reason is the loose seal between the valve disc and the valve seat. When the safety valve is not sealed tightly under normal working pressure or cannot be completely sealed when the opening pressure is reached, it will cause the medium discharged from the equipment to leak into the safety valve, and even cause the safety valve to fail to reach the set opening pressure, so that the valve disc will not move or react slowly when it moves, thereby affecting the normal pressure relief use of the safety valve;

[0004] In addition, when some safety valves are in use, when the instantaneous pressure inside the valve body is too high, the effect of pressure relief through only one discharge pipe is relatively poor. If the excess medium inside the valve body is not discharged in time, it will affect the normal use of the valve body and even cause the valve body to rupture or deform. Summary of the Invention

[0005] The purpose of the present invention is to provide a safety valve body based on safety pressure relief, which can seal the connection between the recoil disc and the adjustment ring through a sealing mechanism to ensure the sealing effect of the valve seat. In addition, when the pressure inside the valve body is too high, excess medium can be discharged through an auxiliary pipe, thereby improving the efficiency of the pressure relief of the valve body, solving the problem that when some safety valves are currently in use, the sealing line between the valve disc and the valve seat will affect the normal use of the safety valve, and the excessive pressure inside the valve body cannot be relieved in time, which will also affect the normal use of the valve body.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a safety valve body based on safety pressure relief, comprising a valve body, a discharge pipe connected to the valve body, a valve cover, and a valve seat with an adjustment ring provided on its surface, and further comprising:

[0007] A support plate fixedly connected to the inner wall of the valve body, a guide sleeve fixedly passing through the support plate, and a force applying mechanism installed on the top of the support plate, wherein a recoil plate is slidably fitted inside the guide sleeve, and a conical groove and a storage groove are respectively formed on the top and bottom of the recoil plate, and a valve disc is provided inside the storage groove;

[0008] A sealing groove is provided at the bottom of the recoil disc. A sealing mechanism is installed on the top of the guide sleeve. The sealing mechanism includes an air delivery assembly, an air delivery pipe, and a sealing assembly. A lifting mechanism is provided on the surface of the recoil disc. The lifting mechanism includes a lifting assembly, a fixed disc, and an adjustment assembly. A horizontal plate is provided on the top of the adjustment assembly. A lower wedge block is fixedly connected to the top of the horizontal plate.

[0009] A guide mechanism is installed on the surface of the guide sleeve, an upper wedge block is installed inside the guide mechanism, the surface of the valve body is connected to an auxiliary pipe, the inner wall of the auxiliary pipe is provided with a blocking groove, a vertical plate with a long rod fixedly connected to the surface is installed on the top of the guide mechanism, a first compression spring is installed between the guide sleeve and the vertical plate, one end of the long rod is fixedly connected to a blocking disk, and a through groove and an annular groove are respectively provided inside and on the surface of the blocking disk;

[0010] An air injection mechanism is installed on the surface of the guide sleeve, the surface of the air injection mechanism is connected to an air injection pipe, the inner wall of the through groove is fixedly connected to a ventilation pipe, the air injection pipe and the ventilation pipe are connected, the inner wall of the annular groove is fixedly connected to a blocking airbag, and the ventilation pipe is connected to the blocking airbag.

[0011] Preferably, the force-applying mechanism includes a lifting plate, a valve stem and a second compression spring, and there are two lifting plates. The bottom of the lower lifting plate contacts the top of the guide sleeve, the top of the valve cover is installed with a valve cap, and the top of the upper lifting plate contacts the top of the inner wall of the valve cover. The valve stem is fixedly passed through the lifting plate, and the second compression spring is sleeved on the surface of the valve stem. The two ends of the second compression spring are respectively fixedly connected to the surfaces of the two lifting plates. The top of the valve stem passes through the top of the valve cover and extends to the inside of the valve cap. The top of the valve cover is slidably passed through a threaded sleeve, and a nut is threadedly sleeved on the surface of the threaded sleeve. The bottom of the nut is rotatably connected to the top of the valve cover, and the bottom of the threaded sleeve contacts the top of the upper lifting plate. The valve stem passes through the threaded sleeve, and the bottom of the valve stem surface fits the inner wall of the tapered groove.

[0012] Preferably, the gas delivery assembly includes an air cylinder, a U-shaped rod and a first piston plate. The air cylinder is fixedly connected to the top of the guide sleeve, one end of the U-shaped rod slides through the top of the air cylinder, the first piston plate is slidably connected to the inside of the air cylinder, one end of the U-shaped rod is fixedly connected to the top of the first piston plate, the top of the air delivery pipe passes through the guide sleeve and the bottom of the air cylinder, and an air hole is opened on the top of the air cylinder.

[0013] Preferably, the sealing assembly includes a sealing airbag, an L-shaped tube and a hose. The sealing airbag is fixedly connected to the inside of the sealing groove, one end of the L-shaped tube is connected to the sealing airbag, and the other end of the L-shaped tube passes through the surface of the recoil disk. The two ends of the hose are respectively connected to the air supply pipe and the L-shaped tube.

[0014] Preferably, the lifting assembly includes a hollow ring, a disc and a polished rod, the hollow ring is fixedly sleeved on the surface of the recoil disc, the disc is fixedly connected to the top of the hollow ring, the top of the disc is in contact with the bottom of the fixed disc, there are two polished rods, the two polished rods are respectively fixedly connected to the two sides of the top of the disc, and the fixed disc is slidably sleeved on the surface of the polished rod.

[0015] Preferably, the adjustment assembly includes a swivel, a drum and a screw, the swivel is rotatably connected to the top of the fixed plate, the drum is fixedly passed through the swivel, the top of the screw is fixedly connected to the bottom of the cross plate, and the screw thread passes through the top of the drum.

[0016] Preferably, the gas injection mechanism includes a gas injection cylinder, a pull rod and a second piston plate. The gas injection cylinder is fixedly connected to the surface of the guide sleeve, one end of the pull rod slides through the gas injection cylinder, and the other end of the pull rod is fixedly connected to the surface of the vertical plate. The second piston plate is arranged inside the gas injection cylinder, one end of the pull rod is fixedly connected to the surface of the second piston plate, and the surface of the gas injection cylinder is opened and closed with ventilation grooves.

[0017] Preferably, the inner wall of the gas injection cylinder is fixedly connected to a limit plate, and the surface of the second piston plate is in contact with the surface of the limit plate.

[0018] Preferably, the guide mechanism includes a guide rod, a fixed frame and an extension plate. There are two guide rods, both of which are fixedly connected to the surface of the guide sleeve. The fixed frame is arranged between the two guide rods. The extension plate is fixedly connected to the surface of the fixed frame. The guide rod slides through the extension plate. The vertical plate is fixedly connected to the top of the fixed frame. The upper wedge block is fixedly connected to the top of the inner wall of the fixed frame.

[0019] Preferably, the surface of the guide sleeve is fixedly connected to a 匚-shaped plate, and the surface of the horizontal plate is driven to have a sliding groove, and the inner wall of the sliding groove is in contact with the surface of the 匚-shaped plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] When in use, the present invention can seal the connection between the recoil disc and the adjustment ring through the sealing mechanism to ensure the sealing effect of the valve seat, thereby reducing leakage of the medium and affecting the normal use of the storage tank. In addition, when the pressure inside the valve body is too high, the sealing of the auxiliary pipe by the sealing disc can be released so that excess medium can be discharged through the auxiliary pipe, thereby improving the efficiency of the pressure relief of the valve body, solving the problem that when some safety valves are currently in use, the sealing line between the valve disc and the valve seat will affect the normal use of the safety valve, and the problem that the pressure inside the valve body is too high and cannot be relieved in time, which will also affect the normal use of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the valve body, discharge pipe, valve cover, support plate, guide sleeve and auxiliary pipe after being cut apart;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention after the guide sleeve and the recoil disc are cut open and partially disassembled;

[0025] Figure 4 Schematic diagram of the three-dimensional structure of the guide sleeve, the force applying mechanism and the sealing mechanism in the present invention;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the gas storage cylinder after being cut open;

[0027] Figure 6 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the guide sleeve after being cut open;

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the recoil plate, lifting assembly, adjustment assembly, cross plate and lower wedge block in the present invention;

[0030] Figure 9 This is a schematic diagram of the three-dimensional structure of the gas injection cylinder and the sealing disk after being cut open;

[0031] Figure 10 This is a schematic diagram of the three-dimensional structure of the valve body, discharge pipe, support plate, guide sleeve and auxiliary pipe after being cut apart;

[0032] Figure 11 For the present invention Figure 8 Schematic diagram of the enlarged structure at point A in the middle.

[0033] In the figure: 1. valve body; 2. discharge pipe; 3. valve cover; 4. valve seat; 5. adjustment ring; 6. support plate; 7. guide sleeve; 8. force-applying mechanism; 81. lifting plate; 82. valve stem; 83. second compression spring; 9. recoil plate; 10. storage tank; 11. valve disc; 12. sealing groove; 13. sealing mechanism; 131. air delivery assembly; 1311. air storage cylinder; 1312. U-shaped rod; 1313. first piston plate; 132. air delivery pipe; 133. sealing assembly; 1331. sealing air bag; 1332. L-shaped pipe; 1333. hose; 14. lifting mechanism; 141. lifting assembly; 1411. hollow ring; 1412. disc; 141 3. Light rod; 142. Fixed plate; 143. Adjustment assembly; 1431. Rotating ring; 1432. Rotating cylinder; 1433. Screw rod; 15. Horizontal plate; 16. Type plate; 17. Lower wedge block; 18. Guide mechanism; 181. Guide rod; 182. Fixed frame; 183. Extension plate; 19. Upper wedge block; 20. Vertical plate; 21. Long rod; 22. Sealing disk; 23. Through groove; 24. Annular groove; 25. Gas injection mechanism; 251. Gas injection cylinder; 252. Pull rod; 253. Second piston plate; 26. Gas injection pipe; 27. Vent pipe; 28. Sealing airbag; 29. ​​Limit plate; 30. Auxiliary pipe; 31. Sealing groove; 32. First compression spring. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figures 1-11A safety valve body based on safety pressure relief includes a valve body 1, a discharge pipe 2 connected to the surface of the valve body 1, a valve cover 3 connected to the top of the valve body 1, a valve seat 4 connected to the bottom of the inner wall of the valve body 1, and an adjustment ring 5 arranged on the surface of the valve seat 4. A support plate 6 is fixedly connected to the upper part of the inner wall of the valve body 1, a guide sleeve 7 is fixedly passed through the top of the support plate 6, a force applying mechanism 8 is installed on the top of the support plate 6, a recoil disc 9 is slidably fitted inside the guide sleeve 7, a conical groove is provided on the top of the recoil disc 9, a storage groove 10 is provided at the bottom of the recoil disc 9, a valve disc 11 is provided inside the storage groove 10, the bottom of the valve disc 11 is in contact with the top of the adjustment ring 5, and a sealing ring is provided at the bottom of the recoil disc 9. Sealing groove 12, a sealing mechanism 13 is installed on the top of the guide sleeve 7, the sealing mechanism 13 includes an air delivery component 131 arranged on the top of the guide sleeve 7, an air delivery pipe 132 running through the guide sleeve 7 and a sealing component 133 arranged inside the sealing groove 12, the surface of the recoil disc 9 is provided with a lifting mechanism 14, the lifting mechanism 14 includes a lifting component 141 mounted on the surface of the recoil disc 9, a fixed disc 142 arranged on the surface of the lifting component 141 and an adjusting component 143 mounted on the top of the fixed disc 142, a cross plate 15 is provided on the top of the adjusting component 143, the surface of the guide sleeve 7 is fixedly connected to the 匚 profile plate 16, the cross plate 15 drives the surface to open a slide groove, the inner wall of the slide groove is in contact with the surface of the 匚 profile plate 16 , the 匚-shaped plate 16 can increase the stability of the horizontal plate 15 when it is lifted and moved. The top of the horizontal plate 15 is fixedly connected with a lower wedge block 17. The surface of the guide sleeve 7 is installed with a guide mechanism 18. The interior of the guide mechanism 18 is installed with an upper wedge block 19. The bottom of the upper wedge block 19 contacts the top of the lower wedge block 17. The surface of the valve body 1 is connected with an auxiliary pipe 30. The inner wall of the auxiliary pipe 30 is provided with a blocking groove 31. The top of the guide mechanism 18 is installed with a vertical plate 20. The surface of the vertical plate 20 is fixedly connected with a long rod 21. One end of the long rod 21 is fixedly connected with a blocking disk 22. The surface of the blocking disk 22 contacts the inner wall of the auxiliary pipe 30. The inside of the blocking disk 22 is provided with a through groove 23. The blocking disk 22 An annular groove 24 is provided on the surface of the guide sleeve 7, and the through groove 23 is connected to the annular groove 24. An air injection mechanism 25 is installed on the surface of the guide sleeve 7, and the surface of the air injection mechanism 25 is connected to the air injection pipe 26. The inner wall of the through groove 23 is fixedly connected to a ventilation pipe 27, and the air injection pipe 26 passes through the blocking disk 22 and is connected to the ventilation pipe 27. The inner wall of the annular groove 24 is fixedly connected to a blocking airbag 28, and the surface of the blocking airbag 28 is in contact with the inner wall of the blocking groove 31. The sealing effect of the blocking disk 22 on the auxiliary tube 30 can be increased by co-using the blocking airbag 28 and the blocking groove 31. Both ends of the ventilation pipe 27 are connected to the surface of the blocking airbag 28, and a first compression spring 32 is installed between the guide sleeve 7 and the vertical plate 20.

[0036] The inner diameter of one end of the auxiliary tube 30 close to the guide sleeve 7 is larger than the inner diameter of the other end of the auxiliary tube 30 , and the diameter of the sealing disk 22 is equal to the inner diameter of the other end of the auxiliary tube 30 .

[0037] The force applying mechanism 8 includes a lifting plate 81, a valve stem 82 and a second compression spring 83. There are two lifting plates 81. The bottom of the lower lifting plate 81 contacts the top of the guide sleeve 7. The top of the valve cover 3 is installed with a valve cap. The top of the upper lifting plate 81 contacts the top of the inner wall of the valve cover 3. The valve stem 82 is fixedly passed through the lifting plate 81. The second compression spring 83 is sleeved on the surface of the valve stem 82. The two ends of the second compression spring 83 are respectively fixedly connected to the surfaces of the two lifting plates 81. The top of the valve stem 82 passes through the top of the valve cover 3 and extends to the inside of the valve cap. The top of the valve cover 3 The bottom of the nut is rotatably connected to the top of the valve cover 3, and the bottom of the threaded sleeve contacts the top of the upper lifting plate 81. The valve stem 82 passes through the threaded sleeve. The staff can rotate the nut when opening the valve cap, and the nut and the threaded sleeve can drive the upper lifting plate 81 to descend, thereby shortening the stroke of the second compression spring 83. Based on this, the elastic force of the second compression spring 83 can be adjusted to adjust the discharge pressure inside the valve body 1. The lower surface of the valve stem 82 fits the inner wall of the tapered groove.

[0038] The gas delivery assembly 131 includes a gas cylinder 1311, a U-shaped rod 1312 and a first piston plate 1313. The gas cylinder 1311 is fixedly connected to the top of the guide sleeve 7. One end of the U-shaped rod 1312 slides through the top of the gas cylinder 1311. The first piston plate 1313 is slidably connected to the inside of the gas cylinder 1311. One end of the U-shaped rod 1312 is fixedly connected to the top of the first piston plate 1313. The top of the gas delivery pipe 132 passes through the guide sleeve 7 and the bottom of the gas cylinder 1311. The other end of the U-shaped rod 1312 is fixedly connected to the lifting pipe 132. The top of the lowering plate 81 is fixedly connected, and an appropriate amount of gas is stored inside the air cylinder 1311 and below the first piston plate 1313. The lifting plate 81 descends under the action of the elastic force of the second compression spring 83 and drives the U-shaped rod 1312 to descend. At this time, the first piston plate 1313 descends inside the air cylinder 1311 and compresses the gas inside the air cylinder 1311 so that the gas inside the air cylinder 1311 can be injected into the interior of the sealing assembly 133 through the air supply pipe 132. An air hole is opened on the top of the air cylinder 1311.

[0039] The sealing assembly 133 includes a sealing airbag 1331, an L-shaped tube 1332 and a hose 1333. The sealing airbag 1331 is fixedly connected to the interior of the sealing groove 12. One end of the L-shaped tube 1332 is communicated with the sealing airbag 1331, and the other end of the L-shaped tube 1332 passes through the surface of the recoil disk 9. The two ends of the hose 1333 are respectively communicated with the gas supply pipe 132 and the L-shaped tube 1332. The gas supply pipe 132 injects gas into the interior of the L-shaped tube 1332 through the hose 1333. The hose 1333 can be adjusted to extend and retract when the recoil disk 9 moves to cooperate with the lifting and lowering movement of the recoil disk 9. At this time, the L-shaped tube 1332 injects gas into the sealing airbag 1331. The sealing airbag 1331 expands to reseal the contact portion between the recoil disk 9 and the adjustment ring 5, thereby ensuring the sealing effect between the recoil disk 9 and the adjustment ring 5, thereby reducing the repeated fluctuation of the recoil disk 9.

[0040] The lifting assembly 141 includes a hollow ring 1411, a disc 1412 and a light rod 1413. The hollow ring 1411 is fixedly mounted on the surface of the recoil disk 9. The disc 1412 is fixedly connected to the top of the hollow ring 1411. The top of the disc 1412 is in contact with the bottom of the fixed disk 142. There are two light rods 1413. The two light rods 1413 are respectively fixedly connected to the two sides of the top of the disc 1412. The fixed disk 142 is slidably mounted on the surface of the light rod 1413. The recoil disk 9 rises as the internal gas pressure of the valve seat 4 increases. At this time, the lifting assembly 141 drives the fixed disk 142 to rise. Accordingly, the adjusting assembly 143 can be squeezed by the fixed disk 142, and the cross plate 15 rises accordingly. The lower wedge block 17 can move laterally in the direction of the molded plate 16.

[0041] The adjusting assembly 143 includes a swivel 1431, a rotating cylinder 1432 and a screw rod 1433. The swivel 1431 is rotatably connected to the top of the fixed disk 142, the rotating cylinder 1432 is fixedly passed through the swivel 1431, the top of the screw rod 1433 is fixedly connected to the bottom of the horizontal plate 15, and the screw rod 1433 is threadedly passed through the top of the rotating cylinder 1432. When the staff rotates the swivel 1431, the distance between the screw rod 1433 and the swivel 1431 can be adjusted by rotating the rotating cylinder 1432, so that the staff can adjust the timing of moving the sealing disk 22 according to actual usage, so that the sealing disk 22 can move when the pressure inside the valve body 1 is too high, so that excess gas inside the valve body 1 can be discharged through the sealing groove 31.

[0042] The gas injection mechanism 25 includes a gas injection cylinder 251, a pull rod 252 and a second piston plate 253. The gas injection cylinder 251 is fixedly connected to the surface of the guide sleeve 7. One end of the pull rod 252 slides through the gas injection cylinder 251. The other end of the pull rod 252 is fixedly connected to the surface of the vertical plate 20. The second piston plate 253 is arranged inside the gas injection cylinder 251. One end of the pull rod 252 is fixedly connected to the surface of the second piston plate 253. The inside of the gas injection cylinder 251 and the side of the second piston plate 253 close to the pull rod 252 are filled with an appropriate amount of gas. The gas can fill the sealing airbag 28 through the gas injection pipe 26 and the vent pipe 27. The inner wall of the gas injection cylinder 251 is fixed. The limiting plate 29 is connected, and the surface of the second piston plate 253 is in contact with the surface of the limiting plate 29. The movement range of the second piston plate 253 can be limited by the setting of the limiting plate 29. The surface of the gas injection cylinder 251 is opened and closed with a ventilation groove. Under the action of the elastic force of the first compression spring 32, the vertical plate 20 moves to the side away from the guide sleeve 7. At this time, the pull rod 252 is forced to drive the second piston plate 253 to move. Accordingly, the gas inside the gas injection cylinder 251 moves and injects the gas into the interior of the blocking airbag 28 through the gas injection pipe 26 and the ventilation pipe 27. The blocking airbag 28 cooperates with the blocking groove 31 to improve the sealing effect between the blocking disk 22 and the auxiliary pipe 30.

[0043] The guide mechanism 18 includes a guide rod 181, a fixed frame 182 and an extension plate 183. There are two guide rods 181, and the two guide rods 181 are fixedly connected to the surface of the guide sleeve 7. The fixed frame 182 is arranged between the two guide rods 181. The extension plate 183 is fixedly connected to the surface of the fixed frame 182. The guide rod 181 slides through the extension plate 183. The vertical plate 20 is fixedly connected to the top of the fixed frame 182. The upper wedge block 19 is fixedly connected to the top of the inner wall of the fixed frame 182. The guide mechanism 18 can guide the movement of the upper wedge block 19 and the vertical plate 20.

[0044] Working principle: The staff connects the bottom of the valve body 1 to the corresponding equipment. At this time, part of the medium discharged by the equipment can be injected into the interior of the valve seat 4. More preferably, the safety valve body is more suitable for equipment that discharges gaseous media. When the pressure inside the valve seat 4 is relatively high, the storage tank 10 is forced to drive the recoil disk 9 to rise. At this time, the valve stem 82 is forced to rise, and the second compression spring 83 is forced to shorten. In this process, the disc 1412 rises with the hollow ring 1411 and squeezes the bottom of the fixed disk 142. The adjusting component 143 then drives the horizontal plate 15 to rise, and the lower wedge block 17 is forced to squeeze the upper wedge block 19. The vertical plate 20 can move laterally in the direction of the guide sleeve 7 with the movement of the guide mechanism 18 and the upper wedge block 19. The long rod 21 is forced to pull the sealing disk 22, and excess gas can be discharged from the auxiliary pipe 30. Accordingly, the situation where the internal pressure of the valve body 1 is too high or even ruptures can be reduced;

[0045] Then, under the action of the elastic force of the second compression spring 83, the lower lifting plate 81 drives the valve stem 82 to descend to squeeze the recoil disk 9, and the storage groove 10 then descends to contact the top of the adjusting ring 5, thereby sealing the top of the valve seat 4. At the same time, the lifting plate 81 drives the U-shaped rod 1312 to descend, and the first piston plate 1313 also descends and injects the gas inside the gas cylinder 1311 into the interior of the hose 1333 through the gas pipe 132. The gas is injected into the interior of the sealing airbag 1331 through the L-shaped tube 1332. The sealing airbag 1331 expands to squeeze the recoil disk 9 and the adjusting ring 5. The connection between the section rings 5 ​​is sealed to ensure the sealing of the valve seat 4, thereby reducing the problem of leakage of the medium inside the valve seat 4. During this process, under the action of the elastic force of the first compression spring 32, the vertical plate 20 moves in the opposite direction, the sealing disk 22 contacts the inner wall of the auxiliary tube 30, and the pull rod 252 is forced to pull the second piston plate 253. The internal gas of the gas injection cylinder 251 is injected into the interior of the sealing airbag 28 through the gas injection pipe 26 and the ventilation pipe 27. The sealing airbag 28 expands and cooperates with the sealing groove 31 to seal the auxiliary tube 30 to ensure the sealing of the valve body 1.

[0046] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A safety valve body based on safety pressure relief, comprising a valve body (1), a discharge pipe (2) connected to the valve body (1), a valve cover (3), and a valve seat (4) with an adjustment ring (5) provided on the surface thereof, characterized in that: Also includes: A support plate (6) fixedly connected to the inner wall of the valve body (1), a guide sleeve (7) fixedly penetrating the support plate (6), and a force applying mechanism (8) installed on the top of the support plate (6); a recoil plate (9) is slidably fitted inside the guide sleeve (7); a conical groove and a storage groove (10) are respectively provided on the top and bottom of the recoil plate (9); a valve flap (11) is provided inside the storage groove (10); A sealing groove (12) is provided at the bottom of the recoil disc (9); a sealing mechanism (13) is installed on the top of the guide sleeve (7); the sealing mechanism (13) includes an air delivery assembly (131), an air delivery pipe (132) and a sealing assembly (133); a lifting mechanism (14) is provided on the surface of the recoil disc (9); the lifting mechanism (14) includes a lifting assembly (141), a fixed disc (142) and an adjustment assembly (143); a transverse plate (15) is provided on the top of the adjustment assembly (143); a lower wedge block (17) is fixedly connected to the top of the transverse plate (15); A guide mechanism (18) is mounted on the surface of the guide sleeve (7), an upper wedge block (19) is mounted inside the guide mechanism (18), an auxiliary pipe (30) is connected to the surface of the valve body (1), a sealing groove (31) is provided on the inner wall of the auxiliary pipe (30), a vertical plate (20) with a long rod (21) fixedly connected to the surface is mounted on the top of the guide mechanism (18), a first compression spring (32) is mounted between the guide sleeve (7) and the vertical plate (20), one end of the long rod (21) is fixedly connected to a sealing disk (22), and a through groove (23) and an annular groove (24) are respectively provided inside and on the surface of the sealing disk (22); An air injection mechanism (25) is mounted on the surface of the guide sleeve (7), the surface of the air injection mechanism (25) is connected to an air injection pipe (26), the inner wall of the through groove (23) is fixedly connected to a vent pipe (27), the air injection pipe (26) and the vent pipe (27) are connected, the inner wall of the annular groove (24) is fixedly connected to a blocking air bag (28), the vent pipe (27) and the blocking air bag (28) are connected.

2. A safety valve body based on safety pressure relief according to claim 1, characterized in that: The force-applying mechanism (8) includes a lifting plate (81), a valve stem (82) and a second compression spring (83). There are two lifting plates (81). The bottom of the lower lifting plate (81) contacts the top of the guide sleeve (7). A valve cap is installed on the top of the valve cover (3). The top of the upper lifting plate (81) contacts the top of the inner wall of the valve cover (3). The valve stem (82) is fixed and passes through the lifting plate (81). The second compression spring (83) is sleeved on the surface of the valve stem (82). The second compression spring The two ends of the spring (83) are fixedly connected to the surfaces of the two lifting plates (81) respectively. The top of the valve stem (82) passes through the top of the valve cover (3) and extends to the inside of the valve cap. The top of the valve cover (3) is slidably penetrated by a threaded sleeve. The surface of the threaded sleeve is threaded with a nut. The bottom of the nut is rotatably connected to the top of the valve cover (3). The bottom of the threaded sleeve contacts the top of the upper lifting plate (81). The valve stem (82) passes through the threaded sleeve. The bottom of the surface of the valve stem (82) fits into the inner wall of the tapered groove.

3. The safety valve body based on safety pressure relief according to claim 1, characterized in that: The gas delivery assembly (131) includes a gas cylinder (1311), a U-shaped rod (1312) and a first piston plate (1313). The gas cylinder (1311) is fixedly connected to the top of the guide sleeve (7). One end of the U-shaped rod (1312) slides through the top of the gas cylinder (1311). The first piston plate (1313) is slidably connected to the inside of the gas cylinder (1311). One end of the U-shaped rod (1312) is fixedly connected to the top of the first piston plate (1313). The top of the gas delivery pipe (132) penetrates the guide sleeve (7) and the bottom of the gas cylinder (1311). An air hole is opened at the top of the gas cylinder (1311).

4. The safety valve body based on safety pressure relief according to claim 1, characterized in that: The sealing assembly (133) comprises a sealing airbag (1331), an L-shaped tube (1332) and a hose (1333). The sealing airbag (1331) is fixedly connected to the interior of the sealing groove (12). One end of the L-shaped tube (1332) is in communication with the sealing airbag (1331). The other end of the L-shaped tube (1332) passes through the surface of the recoil disk (9). The two ends of the hose (1333) are in communication with the air supply pipe (132) and the L-shaped tube (1332), respectively.

5. The safety valve body based on safety pressure relief according to claim 1, characterized in that: The lifting assembly (141) includes a hollow ring (1411), a disc (1412) and a polished rod (1413). The hollow ring (1411) is fixedly sleeved on the surface of the recoil disc (9). The disc (1412) is fixedly connected to the top of the hollow ring (1411). The top of the disc (1412) contacts the bottom of the fixed disc (142). There are two polished rods (1413). The two polished rods (1413) are respectively fixedly connected to the two sides of the top of the disc (1412). The fixed disc (142) is slidably sleeved on the surface of the polished rod (1413).

6. The safety valve body based on safety pressure relief according to claim 1, characterized in that: The adjusting assembly (143) comprises a rotating ring (1431), a rotating cylinder (1432) and a screw rod (1433); the rotating ring (1431) is rotatably connected to the top of the fixed plate (142); the rotating cylinder (1432) is fixedly passed through the rotating ring (1431); the top of the screw rod (1433) is fixedly connected to the bottom of the horizontal plate (15); and the screw rod (1433) is threadedly passed through the top of the rotating cylinder (1432).

7. The safety valve body based on safety pressure relief according to claim 1, characterized in that: The gas injection mechanism (25) includes a gas injection cylinder (251), a pull rod (252) and a second piston plate (253). The gas injection cylinder (251) is fixedly connected to the surface of the guide sleeve (7). One end of the pull rod (252) slides through the gas injection cylinder (251). The other end of the pull rod (252) is fixedly connected to the surface of the vertical plate (20). The second piston plate (253) is arranged inside the gas injection cylinder (251). One end of the pull rod (252) is fixedly connected to the surface of the second piston plate (253). The surface of the gas injection cylinder (251) is opened and closed with a ventilation groove.

8. The safety valve body based on safety pressure relief according to claim 7, characterized in that: The inner wall of the gas injection cylinder (251) is fixedly connected to the limiting plate (29), and the surface of the second piston plate (253) is in contact with the surface of the limiting plate (29).

9. The safety valve body based on safety pressure relief according to claim 1, characterized in that: The guide mechanism (18) comprises a guide rod (181), a fixed frame (182) and an extension plate (183). There are two guide rods (181), and both guide rods (181) are fixedly connected to the surface of the guide sleeve (7). The fixed frame (182) is arranged between the two guide rods (181). The extension plate (183) is fixedly connected to the surface of the fixed frame (182). The guide rod (181) slides through the extension plate (183). The vertical plate (20) is fixedly connected to the top of the fixed frame (182). The upper wedge block (19) is fixedly connected to the top of the inner wall of the fixed frame (182).

10. The safety valve body based on safety pressure relief according to claim 1, characterized in that: The surface of the guide sleeve (7) is fixedly connected with a shaped plate (16), and the surface of the horizontal plate (15) is provided with a sliding groove, and the inner wall of the sliding groove is in contact with the surface of the shaped plate (16).

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