Safety relief valve

Abstract

The utility model belongs to the technical field of pressure release valves, and particularly relates to a safety pressure release valve which comprises a lower valve body, a connecting pipe is fixedly arranged at the bottom of the lower valve body, an upper valve body is arranged at the top of the lower valve body, and a plurality of auxiliary exhaust holes and limiting holes are formed in the inner wall of the top of the upper valve body. Through the arrangement of the limiting hole, the auxiliary exhaust hole, the top cover and the plunger, during pressure relief, if the air pressure in a pipeline is too high and a single air outlet hole cannot quickly exhaust air, the air in the pipeline continues to apply thrust to the valve clack to promote the valve clack to continue to move upwards, the push rod pushes the disc upwards, and then the disc drives the top cover; when the valve clack moves to the position above the air outlet hole, redundant air can enter the upper valve body from the groove and is exhausted through the auxiliary air exhaust holes, double air exhaust and multiple pressure relief are achieved, the situation that the redundant air cannot be rapidly exhausted, and consequently pipe explosion is caused can be effectively prevented, and the service life of the valve clack is prolonged. And the safety of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure relief valves, in particular to a safety pressure relief valve. Background Art

[0002] Pressure relief valves are essential auxiliary components in pipeline systems and are widely used in boilers, oil and natural gas. They are often installed at commanding heights or elbows to remove excess gas from pipelines, improve pipeline efficiency and reduce energy consumption.

[0003] However, the existing pressure relief valve does not have an auxiliary exhaust structure, and excess gas can only be discharged from the exhaust pipe. If the air pressure is too high and the exhaust hole cannot be discharged in time, the air pressure in the tank is still too high, which is very likely to cause a pipe burst and has a low safety index. Therefore, a safety pressure relief valve is proposed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a safety pressure relief valve.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a safety pressure relief valve, including a lower valve body, a connecting pipe is fixedly provided at the bottom of the lower valve body, an upper valve body is provided at the top of the lower valve body, a plurality of auxiliary exhaust holes and limit holes are provided on the top inner wall of the upper valve body, an auxiliary exhaust structure is provided on the top inner wall of the upper valve body, an air outlet hole and a groove are provided on the inner wall of one side of the lower valve body, an exhaust pipe is fixedly provided on one side of the air outlet hole, a valve disc is movably provided in the lower valve body, a push rod is fixedly provided on the top of the valve disc, a plurality of mounting plates are fixedly provided on the inner wall of the lower valve body, a first spring is fixedly provided at the bottom of the plurality of mounting plates, and the bottom ends of the plurality of first springs are fixedly connected to the top of the valve disc.

[0006] As a further description of the above technical solution:

[0007] A mounting ring is fixedly provided at the bottom of the upper valve body, and two clamping grooves are provided on the inner wall of the mounting ring. Two clamping blocks are fixedly provided on the outer wall of the lower valve body, and the clamping blocks are matched with the clamping grooves.

[0008] As a further description of the above technical solution:

[0009] The auxiliary exhaust structure comprises a connecting rod movably connected to the limiting hole, a top cover is fixedly provided on the top of the connecting rod, and four plugs are fixedly provided on the bottom of the top cover, and the plugs are adapted to the auxiliary exhaust hole.

[0010] As a further description of the above technical solution:

[0011] A sealing ring is arranged on the inner wall of the auxiliary exhaust hole, and the inner wall of the sealing ring is movably connected to the outer wall of the plug.

[0012] As a further description of the above technical solution:

[0013] A disc is fixedly provided at the bottom of the connecting rod, a second spring is sleeved on the connecting rod, the top of the second spring fits with the top inner wall of the upper valve body, and the bottom end of the second spring fits with the top of the disc.

[0014] As a further description of the above technical solution:

[0015] The outside of the connecting pipe is provided with threads, and the exhaust pipe and the connecting pipe are both made of stainless steel.

[0016] The utility model has the following beneficial effects:

[0017] 1. Compared with the prior art, the safety pressure relief valve is provided with a limit hole, an auxiliary exhaust hole, a connecting rod, a disc, a second spring, a top cover and a plug. During the pressure relief period, if the air pressure in the pipeline is too high and a single air outlet cannot quickly discharge the gas, the gas in the pipeline continues to apply thrust to the valve disc, prompting the valve disc to continue to move upward, and the push rod pushes the disc upward, and the disc drives the top cover, and the top cover drives multiple plugs to disengage from the auxiliary exhaust hole. When the valve disc moves to the top of the air outlet, excess gas will also enter the upper valve body from the groove and be discharged through multiple auxiliary exhaust holes, thereby realizing double exhaust and multiple pressure relief, which can effectively prevent the pipe from bursting due to the inability to quickly discharge excess gas, thereby improving the safety of the equipment.

[0018] 2. Compared with the prior art, the safety pressure relief valve is provided with a mounting ring, a slot and a block. If the components in the valve are damaged, the upper valve body is rotated counterclockwise, the upper valve body drives the mounting ring, and the mounting ring drives the slot. When the inner wall of one side of the slot fits with the block, the upper valve body is pulled upward to separate the upper valve body from the lower valve body, and the components in the equipment can be replaced or repaired. The split valve body is convenient for subsequent maintenance. When the components are damaged, there is no need to replace the entire part, which reduces the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a safety pressure relief valve proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the front cross-section structure of a safety pressure relief valve proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of an upper valve body in a safety pressure relief valve proposed by the utility model from a first perspective;

[0022] Figure 4This is a schematic diagram of the third perspective structure of an upper valve body in a safety pressure relief valve proposed by the utility model;

[0023] Figure 5 It is a three-dimensional schematic diagram of an auxiliary exhaust structure in a safety pressure relief valve proposed by the utility model;

[0024] Figure 6 The utility model is a schematic diagram of the front cross-section structure of a lower valve body of a safety pressure relief valve.

[0025] Legend:

[0026] 1. Lower valve body; 2. Connecting pipe; 3. Upper valve body; 4. Limiting hole; 5. Auxiliary exhaust hole; 6. Auxiliary exhaust structure; 601. Connecting rod; 602. Disc; 603. Second spring; 604. Top cover; 605. Plug; 7. Mounting ring; 8. Slot; 9. Block; 10. Air outlet; 11. Groove; 12. Exhaust pipe; 13. Valve disc; 14. Push rod; 15. Mounting sheet; 16. First spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figures 1 to 6 The utility model provides a safety pressure relief valve: comprising a lower valve body 1, a connecting pipe 2 is fixedly provided at the bottom of the lower valve body 1, a thread is provided on the outside of the connecting pipe 2, an upper valve body 3 is provided at the top of the lower valve body 1, and a plurality of auxiliary exhaust holes 5 and limit holes 4 are provided on the top inner wall of the upper valve body 3;

[0029] Reference Figure 3 , Figure 6 In order to achieve the purpose of reducing the use cost, a mounting ring 7 is fixedly provided at the bottom of the upper valve body 3, and two card slots 8 are provided on the inner wall of the mounting ring 7. Two card blocks 9 are fixedly provided on the outer wall of the lower valve body 1. The card blocks 9 are adapted to the card slots 8. When the internal components of the equipment are damaged, the upper valve body 3 is rotated counterclockwise, and the upper valve body 3 drives the mounting ring 7, and the mounting ring 7 drives the card slot 8. When the inner wall of one side of the card slot 8 fits with the card block 9, the upper valve body 3 is pulled upward to separate the upper valve body 3 from the lower valve body 1. The components in the equipment can be replaced or repaired without replacing the entire device, thereby reducing the use cost;

[0030] Reference Figure 5In order to achieve the purpose of multiple pressure relief, an auxiliary exhaust structure 6 is provided on the top inner wall of the upper valve body 3, and the auxiliary exhaust structure 6 includes a connecting rod 601 movably connected to the limiting hole 4, and an inner wall of the auxiliary exhaust hole 5 is provided with a sealing ring, and the inner wall of the sealing ring and the outer wall of the plug 605 are movably connected, and a top cover 604 is fixedly provided on the top of the connecting rod 601, and four plugs 605 are fixedly provided at the bottom of the top cover 604, and the plug 605 is adapted to the auxiliary exhaust hole 5. A disc 602 is fixedly provided at the bottom of the connecting rod 601, and a second spring 603 is sleeved on the connecting rod 601. The top of the second spring 603 fits the top inner wall of the upper valve body 3, and the bottom end of the second spring 603 fits the top of the disc 602. If the air pressure in the pipeline is too high, it will continue to apply thrust to the valve disc 13, prompting the valve disc 13 to continue to move upward, and the push rod 14 pushes the disc 602 upward, and the disc 602 drives the top cover 604, and the top cover 60 4 and then drives multiple plugs 605 to separate from the auxiliary exhaust hole 5. When the valve disc 13 moves to the top of the air outlet hole 10, the excess gas will also enter the upper valve body 3 from the groove 11 and be discharged through the multiple auxiliary exhaust holes 5, realizing double exhaust and multiple pressure relief, which can effectively prevent the situation that the pipe bursts due to the inability to quickly discharge the excess gas, and improve the safety of the equipment. An air outlet hole 10 and a groove 11 are arranged on the inner wall of one side of the lower valve body 1. The groove 11 can allow gas to pass through and enter the upper valve body 3. An exhaust pipe 12 is fixedly arranged on one side of the air outlet hole 10. The exhaust pipe 12 and the connecting pipe 2 are both made of stainless steel. A valve disc 13 is movably arranged in the lower valve body 1. A push rod 14 is fixedly arranged on the top of the valve disc 13. A plurality of mounting plates 15 are fixedly arranged on the inner wall of the lower valve body 1. The bottoms of the plurality of mounting plates 15 are fixedly provided with first springs 16. The bottom ends of the plurality of first springs 16 are fixedly connected to the top of the valve disc 13.

[0031] Working principle: If the air pressure in the pipeline is too high, the valve disc 13 will be pushed upward, and the valve disc 13 will drive the push rod 14. When the valve disc 13 moves to the position of the air outlet 10, the excess gas in the pipeline will be discharged from the air outlet 10. If the air pressure in the pipeline is too high, it will continue to apply thrust to the valve disc 13, causing the valve disc 13 to continue to move upward. The push rod 14 pushes the disc 602 upward, and the disc 602 drives the top cover 604. The top cover 604 drives multiple plugs 605 to separate from the auxiliary exhaust hole 5. When the valve disc 13 moves to the top of the air outlet 10, , excess gas will also enter the upper valve body 3 from the groove 11 and be discharged through multiple auxiliary exhaust holes 5, realizing double exhaust and multiple pressure relief, which can effectively prevent the pipe from bursting due to the inability to quickly discharge excess gas, thereby improving the safety of the equipment. If the components in the valve are damaged, rotate the upper valve body 3 counterclockwise, the upper valve body 3 drives the mounting ring 7, and the mounting ring 7 drives the slot 8. When the inner wall of one side of the slot 8 fits with the block 9, pull the upper valve body 3 upward to separate the upper valve body 3 from the lower valve body 1, and replace or repair the components in the equipment.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety pressure relief valve, comprising a lower valve body (1), characterized in that: A connecting pipe (2) is fixedly provided at the bottom of the lower valve body (1), an upper valve body (3) is fixedly provided at the top of the lower valve body (1), a plurality of auxiliary exhaust holes (5) and limiting holes (4) are provided on the top inner wall of the upper valve body (3), an auxiliary exhaust structure (6) is provided on the top inner wall of the upper valve body (3), an air outlet hole (10) and a groove (11) are provided on the inner wall of one side of the lower valve body (1), an exhaust pipe (12) is fixedly provided on one side of the air outlet hole (10), a valve flap (13) is movably provided in the lower valve body (1), a push rod (14) is fixedly provided on the top of the valve flap (13), a plurality of mounting plates (15) are fixedly provided on the inner wall of the lower valve body (1), a first spring (16) is fixedly provided at the bottom of the plurality of mounting plates (15), and the bottom ends of the plurality of first springs (16) are fixedly connected to the top of the valve flap (13).

2. A safety pressure relief valve according to claim 1, characterized in that: A mounting ring (7) is fixedly provided at the bottom of the upper valve body (3), and two clamping grooves (8) are provided on the inner wall of the mounting ring (7). Two clamping blocks (9) are fixedly provided on the outer wall of the lower valve body (1), and the clamping blocks (9) and the clamping grooves (8) are matched.

3. A safety pressure relief valve according to claim 1, characterized in that: The auxiliary exhaust structure (6) comprises a connecting rod (601) movably connected to the limiting hole (4), a top cover (604) is fixedly provided on the top of the connecting rod (601), and four plugs (605) are fixedly provided on the bottom of the top cover (604), and the plugs (605) are adapted to the auxiliary exhaust hole (5).

4. A safety pressure relief valve according to claim 3, characterized in that: A sealing ring is provided on the inner wall of the auxiliary exhaust hole (5), and the inner wall of the sealing ring is movably connected to the outer wall of the plug (605).

5. A safety pressure relief valve according to claim 3, characterized in that: A disc (602) is fixedly provided at the bottom of the connecting rod (601), and a second spring (603) is sleeved on the connecting rod (601). The top of the second spring (603) fits with the top inner wall of the upper valve body (3), and the bottom end of the second spring (603) fits with the top of the disc (602).

6. A safety pressure relief valve according to claim 1, characterized in that: The outside of the connecting pipe (2) is provided with threads, and the exhaust pipe (12) and the connecting pipe (2) are both made of stainless steel.

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