Fireproof check valve reliability detection device

Abstract

The invention discloses a fireproof check valve reliability detection device, and relates to the technical field of fireproof check valve detection, the fireproof check valve reliability detection device comprises a fixed table, the middle part of the upper side of the fixed table is provided with a mounting mechanism, the left part of the upper side of the fixed table is provided with an air supply mechanism, and the right part of the upper side of the fixed table is provided with a test mechanism; the mounting mechanism comprises a fixing assembly, a liftable second fixing cylinder and a liftable first fixing cylinder, the second fixing cylinder is located on the left side of the first fixing cylinder, the air supply mechanism comprises a connecting assembly and an air pump, and the air pump communicates with the interior of the second fixing cylinder through the connecting assembly; by arranging the partition plate, the U-shaped pipe, the inserting rod, the pressure alarm and the floating ball, liquid level changes can be generated when the fireproof check valve leaks, the inserting rod triggers the pressure alarm to give an alarm, the leakage detection accuracy is higher through the liquid level changes, meanwhile, oil vapor adheres to the surface of the fireproof check valve, and leakage is prevented. The method has the characteristics of high practicability and capability of improving the detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of fire prevention check valve detection, and particularly to a reliability detection device for a fire prevention check valve. Background Technique

[0002] A fire prevention check valve is a key device widely used in ventilation, smoke exhaust and pipeline systems. Its main function is to automatically close in case of fire or abnormal conditions to prevent the spread of fire and smoke along the pipeline. The sealing performance of the fire prevention check valve is directly related to the fire safety inside the building, and its reliability detection is particularly important.

[0003] Existing fire prevention check valve detection equipment usually adopts static detection or simple sealing detection methods, and judges through single-direction pressure testing or visual inspection. Such detection methods cannot comprehensively simulate the complex working conditions of the fire prevention check valve in actual use, and it is difficult to truly reflect the change of the sealing performance of the fire prevention check valve after long-term operation. At the same time, due to the influence of environmental factors, air flow pressure fluctuations and pipeline deformation, etc., local sealing failure or aging problems may occur in the fire prevention check valve, and traditional detection methods cannot effectively capture these details.

[0004] There is a detection device for an oil fume exhaust fire prevention check valve with the publication number of CN222188696U. This device can observe the inside of the water tank through a display screen, and at the same time amplify and release the generated bubble sound through a sound amplifier, which is beneficial for personnel to judge the air tightness of the fire prevention check valve, but it cannot efficiently detect the actual working conditions.

[0005] Therefore, it is very necessary to design a reliability detection device for a fire prevention check valve with strong practicability and improved detection accuracy. Summary of the Invention

[0006] The purpose of the present invention is to provide a reliability detection device for a fire prevention check valve to solve the problems raised in the above background technique.

[0007] To solve the above technical problems, the present invention provides the following technical solution: A reliability detection device for a fire prevention check valve, including a fixed table, an installation mechanism is arranged in the middle of the upper side of the fixed table, a gas supply mechanism is arranged on the left part of the upper side of the fixed table, and a testing mechanism is arranged on the right part of the upper side of the fixed table.

[0008] The installation mechanism includes a fixing component, a second fixed cylinder and a first fixed cylinder that can be lifted, and the second fixed cylinder is located on the left side of the first fixed cylinder.

[0009] The gas supply mechanism includes a connection component and an air pump, and the air pump is communicated with the inside of the second fixed cylinder through the connection component.

[0010] The test mechanism includes an oil barrel and a detection component, and the interior of the oil barrel is communicated with the interior of the first fixed cylinder through the detection component.

[0011] According to the above technical solution, the fixing component includes a first bracket, the lower side of the first bracket is fixedly connected to the upper surface of the fixed table, the inner wall of the first bracket is slidably connected with a first slider, the middle of the first slider is fixedly connected to the outer wall of the first fixed cylinder, the upper side of the first slider is rotatably connected with a threaded column through a bearing, the upper end of the threaded column penetrates through the first bracket and extends to the upper side of the first bracket, the outer wall of the threaded column is threadedly connected to the inner wall of the first bracket, the upper surface of the first bracket is rotatably connected with a rotating frame through a bearing, the inner wall of the rotating frame contacts the outer wall of the threaded column, the left side of the upper surface of the fixed table is slidably connected with a second bracket, the inner wall of the second bracket is slidably connected with a second slider, and the inner wall of the second slider is fixedly connected to the outer wall of the second fixed cylinder.

[0012] According to the above technical solution, both the second fixed cylinder and the first fixed cylinder are tubular structures that are penetrated from left to right, the threaded column is a hexagonal prism structure with threaded grooves on its surface, and the inner wall of the rotating frame is a hexagonal structure.

[0013] According to the above technical solution, the connection component includes a first air pipe, one end of the first air pipe is fixedly connected to the left side of the second fixed cylinder, a sealing box is fixedly connected to the rear part of the left side of the upper surface of the fixed table, a filter cotton is placed inside the sealing box, the right side of the sealing box is fixedly connected to one end of the first air pipe, a second air pipe is fixedly connected to the left side of the sealing box, the other end of the second air pipe is fixedly connected to one end of an air pump, and the interior of the air pump is communicated with the interior of the second fixed cylinder through the second air pipe, the sealing box and the first air pipe.

[0014] According to the above technical solution, the detection component includes a partition plate, the partition plate is located inside the oil barrel, and the outer wall of the partition plate is fixedly connected to the inner wall of the oil barrel. A U-shaped pipe is fixedly connected to the right side of the partition plate. One end of the U-shaped pipe extends to the left side inside the oil barrel through the lower side of the partition plate. A one-way valve is arranged at the left end of the U-shaped pipe, and the output side of the one-way valve is the upper side. The interior of the oil barrel is filled with oil and water, the liquid level of the oil and water is higher than the left end of the U-shaped pipe and lower than the right end of the U-shaped pipe. The upper left part of the oil barrel is a closed structure. A plug rod is slidably connected to the right side of the inner wall of the oil barrel. A floating ball is fixedly connected to the lower end of the plug rod. A pressure alarm is arranged on the upper side of the plug rod, and the outer wall of the pressure alarm is fixedly connected to the inner wall of the oil barrel. The plug rod can move upward, and the pressure alarm is located on the moving path of the plug rod. A third air pipe is fixedly connected to the front part of the left side of the oil barrel.

[0015] According to the above technical solution, the partition divides the interior of the oil barrel into two left and right cavities, and the lower side of the partition does not contact the inner wall of the oil barrel. The lower sides of the two left and right cavities inside the oil barrel are connected and arranged. The third air pipe is connected to the upper part of the left cavity of the oil barrel. A one-way valve is arranged inside the third air pipe, and the output side of the one-way valve inside the third air pipe is the side facing the outside of the oil barrel.

[0016] According to the above technical solution, a fourth air pipe is fixedly connected to the left side of the oil barrel. A high-temperature resistant one-way valve is fixedly connected to the inner wall of the fourth air pipe, and the output side of the high-temperature resistant one-way valve is the side facing the outside of the oil barrel. A heat preservation layer is fixedly connected to the outer wall of the fourth air pipe near the oil barrel end. An electric heating pipe is fixedly connected to the inner wall of the heat preservation layer. The left end of the U-shaped pipe is lower than the height of the right end of the fourth air pipe, and the right end of the U-shaped pipe is higher than the height of the right end of the fourth air pipe. The outer wall of the other end of the fourth air pipe is fixedly connected with a mounting block. The lower inner wall of the mounting block is fixedly connected with the outer wall of one end of the third air pipe. A groove is formed on the left side of the mounting block, and the inner wall of the groove is in contact with the outer wall of the first fixed cylinder. A fixing ring is fixedly connected to the outer wall of the first fixed cylinder. Motors are fixedly connected to the front and rear inner walls of the fixing ring. The output end of the motor is fixedly connected with a transmission wheel, and the outer wall of the transmission wheel is in contact with the outer wall of the mounting block.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: By providing a first bracket, a first fixed cylinder and a second fixed cylinder that can be lifted, the present invention can fix and adjust fire prevention check valves of different sizes. By rotating the threaded column to adjust the height of the first fixed cylinder, the device can be adapted to fire prevention check valves of different specifications.

[0018] By providing an air pump, a first air pipe, a sealing box and a second air pipe, the gas inside the channel can be extracted to keep the fire prevention check valve in an open state, and then inflated to form a positive pressure to close the fire prevention check valve. The sealing performance of the fire prevention check valve can be detected by observing the sealing condition.

[0019] By providing a partition, a U-shaped pipe, a plug, a pressure alarm and a floating ball, a liquid level change can be generated when the fire prevention check valve leaks, so that the plug triggers the pressure alarm to give an alarm. Using the liquid level change to detect leakage has a higher accuracy. At the same time, oil water vapor adheres to the surface of the fire prevention check valve, further simulating the actual working condition and improving the simulation degree of the detection.

[0020] By providing a heat preservation layer, an electric heating pipe, a motor and a transmission wheel, the air flow inside the channel can be circulated alternately between hot and cold, accelerating the aging and solidification process of the oil stain on the surface of the fire prevention check valve, simulating the state after long-term use, so as to effectively evaluate the reliability of the fire prevention check valve in extreme environments. Description of the Drawings

[0021] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0022] Figure 1 is a schematic structural diagram of the right side of the present invention;

[0023] Figure 2 is a schematic structural diagram of the left side of the present invention;

[0024] Figure 3 is a schematic structural diagram of the installation mechanism of the present invention;

[0025] Figure 4 is a schematic structural diagram of the testing mechanism of the present invention;

[0026] Figure 5 is a schematic sectional structural diagram of the testing mechanism of the present invention;

[0027] Figure 6 is a schematic structural diagram of the air supply mechanism of the present invention;

[0028] In the figure: 1, fixed table; 2, installation mechanism; 3, air supply mechanism; 4, testing mechanism; 201, first bracket; 202, first slider; 203, first fixed cylinder; 204, threaded column; 205, rotating frame; 206, second bracket; 207, second slider; 208, second fixed cylinder; 301, first air pipe; 302, sealing box; 303, filter cotton; 304, second air pipe; 305, air pump; 401, oil barrel; 402, partition board; 403, U-shaped pipe; 404, float; 405, insertion rod; 406, pressure alarm; 407, third air pipe; 408, fourth air pipe; 409, high-temperature one-way valve; 410, heat preservation layer; 411, electric heating pipe; 412, installation block; 413, fixing ring; 414, motor; 415, transmission wheel. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-6 , the present invention provides a technical solution: a reliability detection device for a fire prevention check valve, including a fixed table 1, an installation mechanism 2 is arranged in the middle of the upper side of the fixed table 1, an air supply mechanism 3 is arranged on the left part of the upper side of the fixed table 1, and a testing mechanism 4 is arranged on the right part of the upper side of the fixed table 1;

[0031] The mounting mechanism 2 includes a fixing assembly, a second fixing cylinder 208 and a first fixing cylinder 203 which can be lifted and lowered. The second fixing cylinder 208 is located on the left side of the first fixing cylinder 203. The fixing assembly includes a first bracket 201. The lower side of the first bracket 201 is fixedly connected to the upper surface of the fixing platform 1. The inner wall of the first bracket 201 is slidably connected with a first slider 202. The middle part of the first slider 202 is fixedly connected to the outer wall of the first fixing cylinder 203. The upper side of the first slider 202 is rotatably connected with a threaded column 204 through a bearing. The upper end of the threaded column 204 penetrates the first bracket 201 and extends to the upper side of the first bracket 201. The threaded column 204 is The outer wall of 204 is threadedly connected to the inner wall of the first bracket 201, and the upper surface of the first bracket 201 is rotatably connected to the rotating frame 205 through a bearing, and the inner wall of the rotating frame 205 contacts the outer wall of the threaded column 204. The left side of the upper surface of the fixed platform 1 is slidably connected to the second bracket 206, and the inner wall of the second bracket 206 is slidably connected to the second slider 207. The inner wall of the second slider 207 is fixedly connected to the outer wall of the second fixed cylinder 208. The second fixed cylinder 208 and the first fixed cylinder 203 are both tubular structures that pass through from left to right. The threaded column 204 is a hexagonal column structure with a thread groove on the surface, and the inner wall of the rotating frame 205 is a hexagonal structure.

[0032] When in use, the fire check valve is fixed between the second fixed cylinder 208 and the first fixed cylinder 203, and the output side of the fire check valve faces the left side, so that the airflow can only move from the right side to the left side, and the two ends of the fire check valve are fixed to the right side of the second fixed cylinder 208 and the left side of the first fixed cylinder 203, so that the second fixed cylinder 208, the fire check valve, and the first fixed cylinder 203 form a complete channel, and because the second bracket 206 can slide left and right relative to the fixed platform 1, the second fixed cylinder 208 can slide relative to the second bracket 206, and the rotation of the rotating frame 205 can drive the threaded column 204 to rotate, and the outer surface of the threaded column 204 The wall is threadedly connected to the inner wall of the first bracket 201, and the height of the first fixed cylinder 203 can be adjusted by rotating the threaded column 204, so that the device can be adapted to fire check valves of various sizes. Since the first fixed cylinder 203 is supported by the threaded column 204, it can maintain a stable position on the first bracket 201, and the second fixed cylinder 208 is slidably connected to the second bracket 206 through the second slider 207 and fixedly connected to one end of the fire check valve, a downward pressure will be generated on one side of the fire check valve, thereby simulating the pressure generated by one end of the fire check valve being pressed downward by the pipeline after long-term use during the detection process, and then testing the influence of the deformation on the sealing performance;

[0033] The air supply mechanism 3 includes a connection component and an air pump 305. The air pump 305 is connected to the inside of the second fixed cylinder 208 through the connection component. The connection component includes a first air pipe 301. One end of the first air pipe 301 is fixedly connected to the left side of the second fixed cylinder 208. The left rear part of the upper surface of the fixed table 1 is fixedly connected with a sealing box 302. A filter cotton 303 is placed inside the sealing box 302. The right side of the sealing box 302 is fixedly connected to one end of the first air pipe 301. The left side of the sealing box 302 is fixedly connected with a second air pipe 304. The other end of the second air pipe 304 is fixedly connected to one end of the air pump 305. The inside of the air pump 305 is connected to the inside of the second fixed cylinder 208 through the second air pipe 304, the sealing box 302 and the first air pipe 301;

[0034] After the device is fixed, start the air pump 305 to pump air. The air in the second fixed cylinder 208, the fire prevention check valve and the first fixed cylinder 203 can be extracted through the second air pipe 304, the sealing box 302 and the first air pipe 301, so as to keep the fire prevention check valve in an open state. Finally, the air pump 305 is used to convey air into the second air pipe 304, so as to generate positive pressure inside the second fixed cylinder 208. At this time, the fire prevention check valve is in a closed state, and the sealing condition of the fire prevention check valve can be observed;

[0035] The testing mechanism 4 includes an oil barrel 401 and a detection component. The inside of the oil barrel 401 is connected to the inside of the first fixed cylinder 203 through the detection component. The detection component includes a partition plate 402. The partition plate 402 is located inside the oil barrel 401, and the outer wall of the partition plate 402 is fixedly connected to the inner wall of the oil barrel 401. A U-shaped pipe 403 is fixedly connected to the right side of the partition plate 402. One end of the U-shaped pipe 403 extends to the left side inside the oil barrel 401 through the lower side of the partition plate 402. A one-way valve is arranged at the left end of the U-shaped pipe 403, and the output side of the one-way valve is the upper side. The inside of the oil barrel 401 is filled with oil and water. The liquid level height of the oil and water is higher than the left end of the U-shaped pipe 403 and lower than the right end of the U-shaped pipe 403. The upper left part of the oil barrel 401 is a closed structure. A plug rod 405 is slidably connected to the right side inner wall of the oil barrel 401. A floating ball 404 is fixedly connected to the lower end of the plug rod 405. A pressure alarm 406 is arranged on the upper side of the plug rod 405. The outer wall of the pressure alarm 406 is fixedly connected to the inner wall of the oil barrel 401. The plug rod 405 can move upward, and the pressure alarm 406 is located on the moving path of the plug rod 405. The left front part of the oil barrel 401 is fixedly connected with a third air pipe 407. The partition plate 402 divides the inside of the oil barrel 401 into left and right two cavities, and the lower side of the partition plate 402 is not in contact with the inner wall of the oil barrel 401. The lower sides of the left and right two cavities inside the oil barrel 401 are connected. The third air pipe 407 is connected to the upper part of the left cavity of the oil barrel 401. A one-way valve is arranged inside the third air pipe 407, and the output side of the one-way valve inside the third air pipe 407 is the side facing the outside of the oil barrel 401;

[0036] When the air pump 305 conducts air extraction detection, since the left end of the U-shaped tube 403 is closer to the liquid level, the air flow enters the right end of the U-shaped tube 403 through the right side of the oil barrel 401, and then is discharged from the left end of the U-shaped tube 403. During the discharge process of the air flow, it will float up from the lower side of the liquid level, driving the oil water vapor to rise and enter the interior of the fourth air pipe 408. Then, it is discharged to the left through the first fixed cylinder 203 and the fire check valve. During this process, some oil water vapor will adhere to the surface of the fire check valve. When the air flow passes through the interior of the seal box 302, the oil water vapor pollutants in the air flow will be filtered by the filter cotton 303, thereby avoiding damage to the air pump 305. When the air pump 305 exhausts air to conduct a sealing test on the fire check valve, since the right side of the fire check valve is connected to the left side inside the oil barrel 401 through the fourth air pipe 408, and the oil barrel 401 is located above the liquid level, and a one-way valve is provided at the left end of the U-shaped tube 403, if the fire check valve leaks, the liquid inside the oil barrel 401 will flow to the right through the lower side of the partition plate 402, causing the liquid level on the right side of the partition plate 402 to rise. Then, the floating ball 404 will float up and drive the insertion rod 405 to trigger the pressure alarm 406 to issue an alarm, achieving the effect of detecting the sealing performance of the fire check valve. By improving the accuracy through the change of the sealed liquid level, and during the test process, a large amount of oil water vapor adheres to the surface of the fire check valve, simulating foreign objects adhered to the surface during actual use, thereby achieving the purpose of increasing the test authenticity;

[0037] The left side of the oil barrel 401 is fixedly connected with a fourth air pipe 408. The inner wall of the fourth air pipe 408 is fixedly connected with a high-temperature resistant one-way valve 409. The output side of the high-temperature resistant one-way valve 409 is the side facing the outside of the oil barrel 401. The outer wall of the fourth air pipe 408 near one end of the oil barrel 401 is fixedly connected with a heat preservation layer 410. The inner wall of the heat preservation layer 410 is fixedly connected with an electric heating tube 411. The left end of the U-shaped tube 403 is lower than the height of the right end of the fourth air pipe 408, and the right end of the U-shaped tube 403 is higher than the height of the right end of the fourth air pipe 408. The outer wall of the other end of the fourth air pipe 408 is fixedly connected with a mounting block 412. The lower inner wall of the mounting block 412 is fixedly connected with one end outer wall of the third air pipe 407. A groove is formed on the left side of the mounting block 412. The inner wall of the groove is in contact with the outer wall of the first fixed cylinder 203. The outer wall of the first fixed cylinder 203 is fixedly connected with a fixing ring 413. The front and rear inner walls of the fixing ring 413 are both fixedly connected with a motor 414. The output end of the motor 414 is fixedly connected with a transmission wheel 415. The outer wall of the transmission wheel 415 is in contact with the outer wall of the mounting block 412;

[0038] During the use of this device, the motor 414 can be started forward and reverse continuously to drive the transmission wheel 415 to rotate. Since the outer wall of the transmission wheel 415 contacts the outer wall of the mounting block 412, the mounting block 412 can be moved up and down during the rotation of the transmission wheel 415. At the same time, the electric heating tube 411 can heat the airflow passing through the high-temperature resistant one-way valve 409, so that the steam input at the right end of the first fixed cylinder 203 changes and alternates between hot and cold, accelerating the aging and solidification rate of the oil stain on the surface of the fire prevention check valve, and increasing the aging speed of the fire prevention check valve. Thus, the working state of the fire prevention check valve after long-term use can be simulated, and the working conditions at different temperatures can be simulated to improve the test reliability.

[0039] It should be noted that in this article, relational terms such as first and second are only used 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fire-proof check valve reliability detection device, comprising a fixing platform (1), wherein a mounting mechanism (2) is provided in the middle of the upper side of the fixing platform (1), characterized in that: An air supply mechanism (3) is provided on the upper left portion of the fixing platform (1), and a testing mechanism (4) is provided on the upper right portion of the fixing platform (1); The mounting mechanism (2) comprises a fixing assembly, a second fixing cylinder (208) and a first fixing cylinder (203) which can be lifted or lowered, wherein the second fixing cylinder (208) is located on the left side of the first fixing cylinder (203); The air supply mechanism (3) comprises a connecting assembly and an air pump (305), and the air pump (305) is connected to the interior of the second fixed cylinder (208) through the connecting assembly; The testing mechanism (4) comprises an oil barrel (401) and a detection component, and the interior of the oil barrel (401) is connected to the interior of the first fixed cylinder (203) via the detection component.

2. A fire check valve reliability detection device according to claim 1, characterized in that: The fixing assembly comprises a first bracket (201), the lower side of the first bracket (201) is fixedly connected to the upper surface of the fixing platform (1), the inner wall of the first bracket (201) is slidably connected to a first slider (202), the middle part of the first slider (202) is fixedly connected to the outer wall of the first fixing cylinder (203), the upper side of the first slider (202) is rotatably connected to a threaded column (204) via a bearing, the upper end of the threaded column (204) penetrates the first bracket (201) and extends to the upper side of the first bracket (201) The outer wall of the threaded column (204) is threadedly connected to the inner wall of the first bracket (201); the upper surface of the first bracket (201) is rotatably connected to a rotating frame (205) via a bearing; the inner wall of the rotating frame (205) contacts the outer wall of the threaded column (204); the left side of the upper surface of the fixed platform (1) is slidably connected to a second bracket (206); the inner wall of the second bracket (206) is slidably connected to a second slider (207); the inner wall of the second slider (207) is fixedly connected to the outer wall of the second fixed cylinder (208).

3. A fire check valve reliability detection device according to claim 2, characterized in that: The second fixed tube (208) and the first fixed tube (203) are both tubular structures that penetrate from left to right, the threaded column (204) is a hexagonal column structure with thread grooves on the surface, and the inner wall of the rotating frame (205) is a hexagonal structure.

4. A fire check valve reliability detection device according to claim 3, characterized in that: The connection assembly comprises a first air pipe (301), one end of the first air pipe (301) is fixedly connected to the left side of the second fixed cylinder (208), a sealing box (302) is fixedly connected to the left rear part of the upper surface of the fixed platform (1), filter cotton (303) is placed inside the sealing box (302), the right side of the sealing box (302) is fixedly connected to one end of the first air pipe (301), the left side of the sealing box (302) is fixedly connected to the second air pipe (304), the other end of the second air pipe (304) is fixedly connected to one end of the air pump (305), and the interior of the air pump (305) is connected to the interior of the second fixed cylinder (208) via the second air pipe (304), the sealing box (302) and the first air pipe (301).

5. A fire check valve reliability detection device according to claim 4, characterized in that: The detection component comprises a partition (402), wherein the partition (402) is located inside the oil barrel (401), and the outer wall of the partition (402) is fixedly connected to the inner wall of the oil barrel (401), and a U-shaped tube (403) is fixedly connected to the right side of the partition (402), and one end of the U-shaped tube (403) extends to the left side of the inside of the oil barrel (401) through the lower side of the partition (402), and a one-way valve is arranged at the left end of the U-shaped tube (403), and the output side of the one-way valve is the upper side, and the inside of the oil barrel (401) is filled with oil and water, and the liquid level of the oil and water is higher than the left end of the U-shaped tube (403) and lower than the liquid level of the U-shaped tube (403). The right end of the shaped tube (403) is connected to the right end of the oil barrel (401), the upper left part of the oil barrel (401) is a closed structure, the right side of the inner wall of the oil barrel (401) is slidably connected with a plug rod (405), the lower end of the plug rod (405) is fixedly connected with a float (404), the upper side of the plug rod (405) is provided with a pressure alarm (406), the outer wall of the pressure alarm (406) is fixedly connected to the inner wall of the oil barrel (401), the plug rod (405) can be moved upward, and the pressure alarm (406) is located on the moving path of the plug rod (405), and the left front part of the oil barrel (401) is fixedly connected with a third air pipe (407).

6. A fire check valve reliability detection device according to claim 5, characterized in that: The partition (402) divides the interior of the oil barrel (401) into two left and right cavities, and the lower side of the partition (402) does not contact the inner wall of the oil barrel (401). The lower sides of the left and right cavities in the oil barrel (401) are connected. The third air pipe (407) is connected to the upper part of the left cavity of the oil barrel (401). A one-way valve is arranged inside the third air pipe (407). The output side of the one-way valve inside the third air pipe (407) is the side facing the outside of the oil barrel (401).

7. A fire check valve reliability detection device according to claim 6, characterized in that: The left side of the oil barrel (401) is fixedly connected to a fourth air pipe (408), the inner wall of the fourth air pipe (408) is fixedly connected to a high temperature resistant one-way valve (409), the output side of the high temperature resistant one-way valve (409) is the side facing the outside of the oil barrel (401), the outer wall of the fourth air pipe (408) close to one end of the oil barrel (401) is fixedly connected to a heat preservation layer (410), the inner wall of the heat preservation layer (410) is fixedly connected to an electric heating pipe (411), the left end of the U-shaped tube (403) is lower than the height of the right end of the fourth air pipe (408), the right end of the U-shaped tube (403) is higher than the height of the right end of the fourth air pipe (408), and the fourth air pipe (408) is fixedly connected to the outer wall of the fourth air pipe (408) near one end of the oil barrel (401). The outer wall of the other end of (408) is fixedly connected to a mounting block (412), the lower inner wall of the mounting block (412) is fixedly connected to the outer wall of one end of the third air pipe (407), a groove is provided on the left side of the mounting block (412), the inner wall of the groove contacts the outer wall of the first fixed cylinder (203), the outer wall of the first fixed cylinder (203) is fixedly connected to a fixing ring (413), the front and rear inner walls of the fixing ring (413) are fixedly connected to a motor (414), the output end of the motor (414) is fixedly connected to a transmission wheel (415), the outer wall of the transmission wheel (415) contacts the outer wall of the mounting block (412).

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