Tank top assembly safety valve

Abstract

The utility model relates to the technical field of safety valves, in particular to a tank top assembly safety valve which comprises an air inlet pipeline, an air outlet pipeline, a valve body mechanism and a filtering mechanism, and the air inlet pipeline and the air outlet pipeline are both communicated with the valve body mechanism. The filtering mechanism comprises a filter screen, a first pipeline and a collecting box, the first pipeline is arranged on the air outlet pipeline and communicates with the air outlet pipeline, the collecting box is in threaded connection to one end of the first pipeline and communicates with the first pipeline, and the filter screen is arranged at the other end of the first pipeline and communicates with the first pipeline; particle impurities in the safety valve can be timely and effectively cleaned through the filtering mechanism, the working efficiency of the safety valve is improved, and the service life of the safety valve is prolonged.

Description

Technical Field

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

[0002] The safety valve is a special branch of the valve family. It is special because it is different from other valves that only play the role of opening and closing. More importantly, it plays the role of protecting the safety of the equipment. When the system pressure exceeds the specified value, the safety valve opens and discharges part of the gas / fluid in the system into the atmosphere / out of the pipeline, so that the system pressure does not exceed the allowable value, thereby ensuring that the system does not cause accidents due to excessive pressure. According to the working principle, it can be divided into direct-acting safety valves and non-direct-acting safety valves. The working principle of the direct-acting safety valve is to rely on the pressure of the working medium to overcome the mechanical load applied to the valve disc by the loading mechanism, so that the valve opens;

[0003] At present, the Chinese utility model patent application with the announcement date of December 12, 2019 and the announcement number CN211117620U proposes a regulating safety valve, which includes a valve body and a shaft sleeve and a flow channel arranged on the valve body. The shaft sleeve is provided with a core rod inserted into the inside of the valve body, and the core rod is provided with a valve core that cooperates with the valve seat to achieve sealing. The shaft sleeve is provided with a compression spring that drives the valve core to seal on the valve seat. When the pressure in the inlet channel is greater than the force of the compression spring, the fluid drives the valve core to separate the valve seat, so that the fluid flows out through the outlet channel. When the fluid passes through the filter, the particulate impurities in the fluid are filtered through the filter;

[0004] However, when the regulating safety valve is filtering the particulate impurities in the fluid, the particulate impurities cannot be collected and cleaned in time, which will clog the filter and may cause the safety valve to leak. The safety valve needs to be stopped during cleaning, resulting in low working efficiency of the safety valve. For this reason, we designed a tank top assembly safety valve. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that when the safety valve is working, dust particles entrained in the outside air will enter the valve body, and the filter screen cannot be cleaned in time, thus causing the safety valve to leak.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The above technical objectives of the utility model are achieved through the following technical solutions: a regulating safety valve, comprising an air inlet pipe, an air outlet pipe, a valve body mechanism and a filtering mechanism, the air inlet pipe and the air outlet pipe are both connected to the valve body mechanism, the filtering mechanism comprises a filter, a first pipe and a collecting box, the first pipe is arranged on the air outlet pipe, and the first pipe is connected to the air outlet pipe, the collecting box is threadedly connected to one end of the first pipe, and the collecting box is connected to the first pipe, and the filter is arranged on the other end of the first pipe.

[0008] When the safety valve is working normally, the incoming gas will lift the valve body mechanism through the air inlet pipe to the air outlet, and then will flow into the first pipe. When the gas passes into the first pipe, the particulate impurities it carries will be filtered by the filter provided in one section of the first pipe, or the particulate impurities will directly fall into the collection box provided at the other end of the first pipe. By adopting the above technical scheme, when the gas carries a large amount of particulate impurities, it can be effectively filtered to prevent the air outlet of the safety valve from being blocked by particulate impurities, thereby improving the internal hygiene level of the safety valve, preventing the safety valve from leaking and exploding, and greatly improving the safety performance and service life of the safety valve.

[0009] Optionally, the filtering mechanism also includes a connecting ring and a sealing ring. An external thread is provided at one end of the first pipe away from the collecting box, and an internal thread is provided on the connecting ring. The connecting ring is threadedly connected to the first pipe, the sealing ring is arranged between the first pipe and the connecting ring, and the filter is arranged on the end of the connecting ring away from the first pipe.

[0010] By adopting the above technical solution, when the filter is used for a long time, many particles and debris may remain on the filter. The cleaning personnel can directly remove the connecting ring to clean the filter, thereby improving the service life of the filter and its efficiency in filtering particles and debris. At the same time, the sealing ring can prevent gas from flowing out from the connection between the connecting ring and the first pipe.

[0011] Optionally, the filtering mechanism further includes a switch valve, and the switch valve is arranged on the first pipeline.

[0012] By adopting the above technical solution, when the safety valve is performing normal exhaust work, if the collection box is full, the switch valve can be rotated to close the valve, and the collection box can be directly unscrewed for cleaning. In this way, the cleaning can be carried out in time to prevent particles and debris from entering the pipeline, causing leakage of the safety valve and other problems, thereby improving the safety performance of the safety valve. At the same time, the safety valve does not need to be stopped for cleaning, but only needs to be closed, which greatly improves the working efficiency of the safety valve.

[0013] Optionally, the collection box is made of transparent material.

[0014] By adopting the above technical solution, the collection situation in the collection box can be observed at any time and cleaned in time to prevent particulate debris from clogging the pipeline and causing leakage of the safety valve.

[0015] Optionally, the valve body mechanism includes a first shell, a second shell and a valve core assembly, the first shell is connected to an air inlet pipe and an air outlet pipe, the second shell is arranged on the first shell, and the valve core assembly includes a valve head, a core rod, a sliding sleeve, a positioning block, a spring, an inner sleeve, and a handle, the handle is slidably connected to an end of the second shell away from the first shell, one end of the valve head is slidably connected to an end of the second shell close to the first shell, the other end of the valve body is located in the first shell, the sliding sleeve is arranged on the valve head, the positioning block is arranged on the sliding sleeve, the inner sleeve is slidably connected in the second shell, one end of the core rod passes through the positioning block and is slidably connected to the sliding sleeve, the other end of the core rod abuts against the inner sleeve, the spring is sleeved on the core rod, one end of the spring abuts against the inner sleeve, and the other end of the spring abuts against the positioning block.

[0016] By adopting the above technical solution, the valve head is always sealed inside the safety valve under the action of the valve core assembly. When gas flows to the valve head of the safety valve, the valve head will be pushed up under the action of pressure. If the gas pressure is greater than the preset value of the spring, the valve head will drive the positioning block to compress the spring upward, and the sliding sleeve will wrap the core rod upward. Since the spring is directly used as the opening and closing part, it is light in weight and not limited by the installation space, and has high sensitivity. When gas flows in, the base is quickly lifted, thereby improving the safety performance of the safety valve.

[0017] Optionally, the valve core assembly further includes an adjusting bolt, a long hole is provided on the second shell, a threaded hole is provided on the inner sleeve, and the adjusting bolt passes through the long hole and is threadedly connected to the inner sleeve.

[0018] By adopting the above technical solution, when facing different pressure conditions, it is only necessary to loosen the adjusting bolt outward, adjust the handle to press the inner sleeve down to the appropriate position, then tighten the adjusting bolt, and adjust the handle back to the initial position. The preset value of the safety valve spring pressure can be changed by adjusting the handle and the adjusting bolt, so that it can be more widely used in different places.

[0019] Optionally, the valve core assembly further includes a first sealing gasket and a second sealing gasket, wherein the first sealing gasket is arranged at the connection between the second shell and the valve head, and the second sealing gasket is arranged at the connection between the first shell and the second shell.

[0020] By adopting the above technical solution, it is possible to effectively prevent the gas entering the safety valve from flowing out through the connection between the first shell and the second shell, causing problems such as leakage of the safety valve.

[0021] In summary, the present invention includes at least one of the following beneficial technical effects:

[0022] 1. When the gas carries a lot of particulate impurities, it can be effectively filtered to prevent the safety valve filter from being blocked by particulate impurities. The filter can be cleaned at any time, which improves the internal hygiene level of the safety valve and prevents accidents such as leakage and explosion of the safety valve, greatly improving the safety performance and service life of the safety valve.

[0023] 2. When the safety valve is exhausting normally, if the collection box is full, you can rotate the switch valve to close the valve and directly unscrew the collection box for cleaning. This can be cleaned in time to prevent particles and debris from entering the pipeline, causing leakage of the safety valve and other problems, thereby improving the safety performance of the safety valve. At the same time, there is no need to stop the safety valve for cleaning, only to close the valve, which greatly improves the working efficiency of the safety valve.

[0024] 3. You can observe the collection situation in the collection box at any time and clean it in time to prevent particles and debris from blocking the pipeline and causing leakage of the safety valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the tank top assembly safety valve proposed by the utility model;

[0026] Figure 2 It is a schematic diagram of the filtering structure of the tank top assembly safety valve proposed by the utility model;

[0027] Figure 3 It is a schematic diagram of the internal structure of the tank top assembly safety valve proposed by the utility model;

[0028] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0029] Explanation of the reference numerals: 100, air inlet pipe; 200, air outlet pipe; 300, valve body mechanism; 310, first shell; 320, second shell; 330, valve core assembly; 331, valve head; 332, core rod; 333, sleeve; 334, positioning block; 335, spring; 336, inner sleeve; 337, handle; 338, adjusting bolt; 339, first sealing gasket; 3301, second sealing gasket; 400, filtering mechanism; 410, filter screen; 420, first pipe; 430, collecting box; 440, connecting ring; 450, sealing ring; 460, switch valve. DETAILED DESCRIPTION

[0030] 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.

[0031] This embodiment discloses a tank top assembly safety valve: refer to Figure 1-Figure 4 A regulating safety valve includes an air inlet pipe 100, an air outlet pipe 200, a valve body mechanism 300 and a filter mechanism 400. The air inlet pipe 100 and the air outlet pipe 200 are both connected to the valve body mechanism 300. The filter mechanism 400 includes a filter screen 410, a first pipe 420 and a collection box 430. The first pipe 420 is arranged on the air outlet pipe 200, and the first pipe 420 is connected to the air outlet pipe 200. The collection box 430 is threadedly connected to one end of the first pipe 420, and the collection box 430 is connected to the first pipe 420. The filter screen 410 is arranged on the first pipe 420. The filter mechanism 400 further comprises a connecting ring 440 and a sealing ring 450. An external thread is provided at one end of the first pipe 420 away from the collecting box 430. An internal thread is provided on the connecting ring 440. The connecting ring 440 is threadedly connected to the first pipe 420. The sealing ring 450 is arranged between the first pipe 420 and the connecting ring 440. The filter screen 410 is arranged at one end of the connecting ring 440 away from the first pipe 420. The filter mechanism 400 further comprises a switch valve 460. The switch valve 460 is arranged on the first pipe 420. The collecting box 430 is made of a transparent material.

[0032] When the safety valve is working normally, the incoming gas will lift the valve body mechanism 300 through the air inlet pipe 100 to the air outlet, and then will flow into the first pipe 420. When the gas passes through the first pipe 420, the particulate impurities it carries will be filtered by the filter 410 set at one end of the first pipe 420, or the particulate impurities will directly fall into the collection box 430 set at the other end of the first pipe 420. After the collection box 430 is full, the valve can be closed by adjusting the switch valve 460 to clean the collection box 430. The collection box 430 is made of transparent material, and the collection situation in the collection box 430 can be observed at any time, which greatly improves the safety performance and work efficiency of the safety valve.

[0033] Reference Figure 1-Figure 4The valve body mechanism 300 includes a first housing 310, a second housing 320 and a valve core assembly 330. The first housing 310 is connected to the air inlet pipe 100 and the air outlet pipe 200. The second housing 320 is arranged on the first housing 310. The valve core assembly 330 includes a valve head 331, a core rod 332, a sleeve 333, a positioning block 334, a spring 335, an inner sleeve 336, and a handle 337. The handle 337 is slidably connected to an end of the second housing 320 away from the first housing 310. One end of the valve head 331 is slidably connected to an end of the second housing 320 close to the first housing 310. The other end of the valve body is located in the first housing 310. The sleeve 333 is arranged on the valve head 331. The positioning block 334 is arranged on the sleeve 333. The inner sleeve 336 is slidably connected to the second housing 320. 0, one end of the core rod 332 passes through the positioning block 334 and is slidably connected to the sliding sleeve 333, the other end of the core rod 332 abuts against the inner sleeve 336, the spring 335 is sleeved on the core rod 332, one end of the spring 335 abuts against the inner sleeve 336, the other end of the spring 335 abuts against the positioning block 334, the valve core assembly 330 also includes an adjusting bolt 338, a long hole is opened on the second housing 320, a threaded hole is opened on the inner sleeve 336, the adjusting bolt 338 passes through the long hole and is threadedly connected to the inner sleeve 336, the valve core assembly 330 also includes a first sealing gasket 339 and a second sealing gasket 3301, the first sealing gasket 339 is arranged at the connection between the second housing 320 and the valve head 331, and the second sealing gasket 3301 is arranged at the connection between the first housing 310 and the second housing 320;

[0034] The valve head 331 is always sealed inside the safety valve under the action of the valve core assembly 330. When gas flows to the safety valve head 331, the valve head 331 will be pushed up under the action of pressure. If the gas pressure is greater than the preset value of the spring 335, the valve head 331 will drive the positioning block 334 to compress the spring 335 upward, and the sliding sleeve 333 will wrap the core rod 332 upward. Since the spring 335 is directly used as the opening and closing component, it is light in weight and not limited by the installation space, and has high sensitivity. When gas flows in, the base is quickly lifted, thereby improving the safety performance of the safety valve. At the same time, when facing different conditions, the preset value of the pressure of the safety valve spring 335 can be changed by adjusting the handle 337 and the adjusting bolt 338, so that it can be more widely used in different places.

[0035] The working principle of the utility model is as follows:

[0036] Under normal circumstances, the valve head 331 is always sealed inside the safety valve under the action of the valve body mechanism 300. When the gas flows to the safety valve head 331, the valve head 331 will be pushed up under the action of pressure. If the gas pressure is greater than the preset value of the spring 335, the valve head 331 will drive the positioning block 334 to compress the spring 335 upward, the sliding sleeve 333 will wrap the core rod 332 upward, the valve head 331 will move upward, and the gas will flow to the filter screen 410 under the action of pressure, and the particles and debris carried by the gas will be on the connecting ring 440. The filter screen 410 is set to filter. At this time, the valve in the first through pipe is in the open state, so some particles and debris will directly fall into the collection box 430. When the safety valve stops working, the particles and debris on the filter screen 410 will fall into the collection box 430 under the action of gravity. If it is observed that the collection box 430 is full, the collection box 430 can be directly unscrewed for cleaning when the safety valve is not working. If the safety valve is in working state, it only needs to be closed by rotating the valve, and then the collection box 430 can be taken down for cleaning.

[0037] When facing different pressure conditions, it is only necessary to loosen the adjusting bolt 338 outward, adjust the handle 337 to press the inner sleeve 336 down to a suitable position, then tighten the adjusting bolt 338, and adjust the handle 337 back to the initial position. By adjusting the handle 337 and the adjusting bolt 338, the preset value of the pressure of the safety valve spring 335 can be changed, so that it can be more widely used in different places. The above are all preferred embodiments of the utility model, and the protection scope of the utility model is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the utility model should be covered within the protection scope of the utility model.

Claims

1. Tank top assembly safety valve, characterized by: The invention comprises an air inlet pipe (100), an air outlet pipe (200), a valve body mechanism (300) and a filter mechanism (400); the air inlet pipe (100) and the air outlet pipe (200) are both in communication with the valve body mechanism (300); the filter mechanism (400) comprises a filter screen (410), a first pipe (420) and a collection box (430); the first pipe (420) is arranged on the air outlet pipe (200), and the first pipe (420) is in communication with the air outlet pipe (200); the collection box (430) is threadedly connected to one end of the first pipe (420), and the collection box (430) is in communication with the first pipe (420); the filter screen (410) is arranged on the other end of the first pipe (420).

2. The tank top assembly safety valve according to claim 1, characterized in that: The filtering mechanism (400) further comprises a connecting ring (440) and a sealing ring (450); an external thread is provided at one end of the first pipe (420) away from the collecting box (430); an internal thread is provided on the connecting ring (440); the connecting ring (440) is threadedly connected to the first pipe (420); the sealing ring (450) is arranged between the first pipe (420) and the connecting ring (440); and the filter screen (410) is arranged on one end of the connecting ring (440) away from the first pipe (420).

3. The tank top assembly safety valve according to claim 1, characterized in that: The filtering mechanism (400) further comprises a switch valve (460), and the switch valve (460) is arranged on the first pipeline (420).

4. The tank top assembly safety valve according to claim 1, characterized in that: The collection box (430) is made of transparent material.

5. The tank top assembly safety valve according to claim 1, characterized in that: The valve body mechanism (300) comprises a first housing (310), a second housing (320) and a valve core assembly (330); the first housing (310) is connected to an air inlet pipe (100) and an air outlet pipe (200); the second housing (320) is arranged on the first housing (310); the valve core assembly (330) comprises a valve head (331), a core rod (332), a sliding sleeve (333), a positioning block (334), a spring (335), an inner sleeve (336), and a handle (337); the handle (337) is slidably connected to an end of the second housing (320) away from the first housing (310); one end of the valve head (331) is slidably connected to the second housing (320) 0) is close to one end of the first housing (310), the other end of the valve body is located in the first housing (310), the sliding sleeve (333) is arranged on the valve head (331), the positioning block (334) is arranged on the sliding sleeve (333), the inner sleeve (336) is slidably connected in the second housing (320), one end of the core rod (332) passes through the positioning block (334) and is slidably connected to the sliding sleeve (333), the other end of the core rod (332) is in contact with the inner sleeve (336), the spring (335) is sleeved on the core rod (332), one end of the spring (335) is in contact with the inner sleeve (336), and the other end of the spring (335) is in contact with the positioning block (334).

6. The tank top assembly safety valve according to claim 5, characterized in that: The valve core assembly (330) further comprises an adjusting bolt (338). An elongated hole is provided on the second housing (320), a threaded hole is provided on the inner sleeve (336), and the adjusting bolt (338) passes through the elongated hole and is threadedly connected to the inner sleeve (336).

7. The tank top assembly safety valve according to claim 5, characterized in that: The valve core assembly (330) further includes a first sealing gasket (339) and a second sealing gasket (3301), wherein the first sealing gasket (339) is arranged at the connection between the second shell (320) and the valve head (331), and the second sealing gasket (3301) is arranged at the connection between the first shell (310) and the second shell (320).

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