An inorganic coating fire resistance testing device

Abstract

The present invention discloses an inorganic coating fire resistance testing device, which relates to the technical field of coating detection. The fire resistance testing mechanism includes an extended fixed seat fixedly arranged on the inner wall of the detection box. A blowtorch is fixedly installed on the lower surface of the extended fixed seat, and a temperature reduction component is arranged on the surface of the extended fixed seat. The specimen limiting mechanism includes two fixed shells distributed on the left and right inner walls of the detection box, and an electric telescopic rod is fixedly installed inside the fixed shell. By arranging a fire resistance testing mechanism and a specimen limiting mechanism inside the detection box, the present invention can use two movable brackets and a limiting top block on the surface of the positioning rod to perform internal clamping support and limitation on the inner wall of the tubular specimen, and then use a blowtorch to spray fire and heat the surface of the specimen. At the same time, the temperature sensor at the end of the positioning rod is used to monitor the backfire surface temperature inside the tubular specimen in real time, so as to facilitate the staff to check and test the fireproof and heat-insulating performance of the inorganic coating on the surface of the specimen.

Description

Technical Field

[0001] The present invention relates to the technical field of coating detection, and specifically to a testing device for the fire resistance performance of inorganic coatings. Background Technique

[0002] The fire resistance performance of inorganic coatings is mainly reflected in their ability to form a protective layer at high temperatures, effectively blocking the spread of fire and protecting the safety of building structures. The main components of inorganic coatings are inorganic substances such as silicates and gelling materials. These components enable the coatings to maintain stability in high-temperature environments, thereby playing their fire prevention role.

[0003] In the prior art, by brushing inorganic coatings on the surfaces of flammable materials, the fire resistance of the materials can be improved, the spread speed of the flame can be slowed down, or combustion can be prevented within a certain period of time. This type of coating is called a fire-resistant coating. After the production of inorganic coatings, it is necessary to test their fire resistance. Currently, the commonly used method in the fire resistance testing device is to place the specimens coated with inorganic coatings on the sample rack, then heat the samples by combustion, and then observe the changes generated on the surface of the coatings of the specimens by the naked eye of the staff. However, since the changes generated by the fire-resistant coatings during heating are subtle and slow, the staff cannot accurately and intuitively judge the strength of the fire resistance of the inorganic coatings.

[0004] Therefore, we have designed a testing device for the fire resistance performance of inorganic coatings. Summary of the Invention

[0005] The purpose of the present invention is to provide a testing device for the fire resistance performance of inorganic coatings to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A testing device for the fire resistance performance of inorganic coatings, including a detection box, and a fire resistance testing mechanism and a specimen limiting mechanism are arranged inside the detection box;

[0007] The fire resistance testing mechanism includes an extended fixed seat fixedly arranged on the inner wall of the detection box. A blowtorch is fixedly installed on the lower surface of the extended fixed seat, and a temperature reduction component is arranged on the surface of the extended fixed seat;

[0008] The specimen limiting mechanism includes two fixed shells distributed on the left and right inner side walls of the detection box. An electric telescopic rod is fixedly installed inside the fixed shell. The telescopic end of the electric telescopic rod is fixedly provided with a rotary motor. The output shaft of the rotary motor is fixedly provided with a fixing plate. Four limiting support rods are fixedly connected to the surface of the fixing plate. The end of the limiting support rod is fixedly provided with a fixed disk. A positioning rod is fixedly provided on the surface of the fixed disk. A strip-shaped limiting groove is opened on the surface of the positioning rod. Two movable brackets are rotatably arranged on the surface of the strip-shaped limiting groove. A limiting top block is fixedly provided at the end of the movable bracket far from the positioning rod.

[0009] Through the above technical solutions, the inner wall of the tubular specimen can be internally clamped, supported, and limited by two movable brackets and a limit top block on the surface of the positioning rod. Then, a blowtorch is used to heat the surface of the specimen by spraying fire. At the same time, a temperature sensor at the end of the positioning rod is used to monitor the backfire surface temperature inside the tubular specimen in real time, so as to facilitate the inspection and testing of the fireproof and heat-insulating performance of the inorganic coating on the surface of the specimen by the staff.

[0010] Preferably, a guiding slide rod is fixedly arranged on the inner wall of the strip-shaped limit groove. A limit movable sleeve is slidably sleeved on the surface of the guiding slide rod. A compression spring is sleeved and installed on the surface of the guiding slide rod. One end of the compression spring is fixedly connected to the surface of the limit movable sleeve. A detection groove is formed in the inner wall of the strip-shaped limit groove, and a pressure sensor is fixedly arranged on the inner wall of the detection groove.

[0011] Through the above technical solutions,

[0012] Preferably, a pressure detection block is arranged inside the detection groove. One side of the pressure detection block is in contact with the surface of the pressure sensor, and the other side of the pressure detection block is fixedly connected to the end of the compression spring.

[0013] Through the above technical solutions, when the inner wall of the specimen expands after being heated, the movable bracket can be used to drive the limit movable sleeve to slide on the surface of the guiding slide rod, thereby driving the compression spring to squeeze the pressure detection block. Thus, the pressure detection block generates pressure on the pressure sensor, and the pressure sensor is used to monitor the pressure, so as to monitor the expansion deformation of the specimen in real time.

[0014] Preferably, movable connecting rods are rotatably connected to the upper and lower surfaces of the limit movable sleeve. One end of the movable connecting rod away from the limit movable sleeve is rotatably connected to the surface of the movable bracket. The limit top block is cylindrical, and a plurality of anti-slip grooves are formed on the surface of the limit top block.

[0015] Preferably, an extension rod is fixedly arranged at the end of the positioning rod, and a temperature sensor is fixedly installed at the end of the extension rod.

[0016] Preferably, the cooling component includes a lifting plate. Two water guide pipes are fixedly embedded on the surface of the lifting plate. The bottom end of the water guide pipe is fixedly provided with a spraying shell. A driving motor is fixedly arranged on the upper surface of the extension fixing seat, and a T-shaped lifting groove is formed on the upper surface of the extension fixing seat. The output shaft of the driving motor extends into the lifting groove and is fixed with a lifting screw rod. The lifting plate is threadedly connected to the surface of the lifting screw rod.

[0017] Preferably, the cooling component further includes a water storage cavity opened inside the extended fixing seat, and a delivery pump fixedly arranged on the upper surface of the extended fixing seat. The input end of the delivery pump extends into the interior of the water storage cavity, and a water suction pipe is fixedly arranged. The output end of the delivery pump is fixedly provided with a shunt conduit, and the two output ends of the shunt conduit are respectively fixedly connected to the input ends of the water guiding pipes.

[0018] Preferably, a semiconductor refrigeration sheet is fixedly embedded in the inner top wall of the water storage cavity, and a heat dissipation fan is arranged on the upper surface of the extended fixing seat. The air inlet end of the heat dissipation fan corresponds to the heat dissipation end of the semiconductor refrigeration sheet, and the semiconductor refrigeration sheet is used to cool and lower the temperature of the water in the water storage cavity.

[0019] Preferably, a circulating water pump is fixedly arranged on the back surface of the detection box. The input end of the circulating water pump extends to the bottom of the detection box, and the output end of the circulating water pump is fixedly provided with a circulating water supply pipe. The end of the circulating water supply pipe away from the circulating water pump extends into the interior of the water storage cavity. The two spray shells are symmetrically distributed on both sides of the blowtorch, and a plurality of water spray holes are formed on the surface of the spray shell.

[0020] Preferably, a partition plate is fixedly arranged on the inner wall of the detection box. The partition plate is located directly below the fire resistance testing mechanism and the specimen limiting mechanism, and a plurality of strip-shaped liquid discharge holes are formed on the surface of the partition plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] (1). In this inorganic coating fire resistance testing device, by arranging a fire resistance testing mechanism and a specimen limiting mechanism inside the detection box, the inner wall of the tubular specimen can be internally clamped, supported, and limited by the two movable brackets and the limiting top blocks on the surface of the positioning rod. Then, the surface of the specimen is heated by a blowtorch, and at the same time, the temperature sensor at the end of the positioning rod is used to monitor the backfire surface temperature inside the tubular specimen in real time, so as to facilitate the staff to check and test the fire prevention and heat insulation performance of the inorganic coating on the surface of the specimen. At the same time, the specimen can be rotated by a rotating motor to facilitate continuous testing of different positions on the surface of the pipe fitting.

[0023] (2). In this inorganic coating fire resistance testing device, by arranging a pressure detection block and a pressure sensor inside the positioning rod, when the inner wall of the specimen expands after being heated, the movable bracket can drive the limiting movable sleeve to slide on the surface of the guiding slide rod, thereby driving the compression spring to squeeze the pressure detection block, so that the pressure detection block generates pressure on the pressure sensor, and the pressure sensor is used to monitor the pressure, and then the expansion deformation of the specimen can be monitored in real time.

[0024] (3) This inorganic coating fire resistance testing equipment can, by setting up a cooling component, after heating and testing the specimen, use a delivery pump to input the cooling water in the water storage cavity into two spray shells, and use the two spray shells to spray water on the surface of the specimen simultaneously for cooling, so as to facilitate the staff to quickly replace the cooled specimen, which is beneficial to improving work efficiency. Moreover, a semiconductor refrigeration sheet can be used to cool the circulating water in the water storage cavity, accelerate the cooling speed of the circulating water, and improve the cooling effect on the specimen. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a front view structural schematic diagram of the present invention;

[0026] Figure 2 is a schematic diagram of the internal structure of the detection box of the present invention;

[0027] Figure 3 is a partial side-sectional structural schematic diagram of the detection box of the present invention;

[0028] Figure 4 is a side-sectional structural schematic diagram of the extension fixing seat of the present invention;

[0029] Figure 5 is a structural schematic diagram of the specimen limiting mechanism of the present invention;

[0030] Figure 6 is a partial front-sectional structural schematic diagram of the positioning rod of the present invention;

[0031] Figure 7 is a side view structural schematic diagram of the fire resistance testing mechanism of the present invention;

[0032] Figure 8 is a structural schematic diagram of the lifting plate and the spray shell of the present invention.

[0033] In the figure: 1, detection box; 2, fire resistance testing mechanism; 3, specimen limiting mechanism; 4, cooling component; 5, partition board; 6, strip-shaped liquid discharge hole;

[0034] 201, extension fixing seat; 202, blowtorch;

[0035] 301, fixed shell; 302, electric telescopic rod; 303, rotating motor; 304, limit support rod; 305, fixed disk; 306, positioning rod; 307, strip-shaped limit groove; 308, movable bracket; 309, limit top block; 310, guide slide rod; 311, limit movable sleeve; 312, compression spring; 313, detection groove; 314, pressure sensor; 315, pressure detection block; 316, movable connecting rod; 317, anti-slip groove; 318, temperature sensor;

[0036] 401, Lifting plate; 402, Water diversion pipe; 403, Spraying shell; 404, Driving motor; 405, Lifting groove; 406, Lifting lead screw; 407, Water storage cavity; 408, Delivery pump; 409, Water suction pipe; 410, Shunt conduit; 411, Semiconductor refrigeration sheet; 412, Circulating water pump; 413, Circulating water supply pipe; 414, Cooling fan. Detailed implementation mode

[0037] 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 work shall fall within the protection scope of the present invention.

[0038] Please refer to Figures 1-6 , the present invention provides a technical solution: an inorganic coating fire resistance test device, including a detection box 1, and a fire resistance test mechanism 2 and a specimen limiting mechanism 3 are arranged inside the detection box 1.

[0039] Please refer to Figure 3 and Figure 4 , the fire resistance test mechanism 2 includes an extended fixed seat 201 fixedly arranged on the inner wall of the detection box 1, a blowtorch 202 is fixedly installed on the lower surface of the extended fixed seat 201, and a temperature reduction component 4 is arranged on the surface of the extended fixed seat 201.

[0040] By setting the blowtorch 202, the coating layer on the surface of the specimen can be heated by the blowtorch 202, so as to facilitate the staff to monitor and observe the temperature, color and shape of the coating.

[0041] It should be noted that a partition plate 5 is fixedly arranged on the inner wall of the detection box 1, the partition plate 5 is located directly below the fire resistance test mechanism 2 and the specimen limiting mechanism 3, and a plurality of strip-shaped drainage holes 6 are opened on the surface of the partition plate 5.

[0042] By setting the partition plate 5 and the strip-shaped drainage holes 6, after the heating test is completed and the specimen is cooled by spraying water, the cooling water can be collected at the bottom of the detection box 1 by the strip-shaped drainage holes 6 on the surface of the partition plate 5, and the waste generated during the heating of the specimen can be filtered by the strip-shaped drainage holes 6 to prevent the waste from entering the bottom of the detection box 1.

[0043] Please refer to Figure 4, the cooling component 4 includes a lifting plate 401. Two water guide pipes 402 are fixedly embedded on the surface of the lifting plate 401. A spray shell 403 is fixedly arranged at the bottom end of the water guide pipe 402. A driving motor 404 is fixedly arranged on the upper surface of the extended fixing seat 201. And a T-shaped lifting groove 405 is formed on the upper surface of the extended fixing seat 201. The output shaft of the driving motor 404 extends into the lifting groove 405 and is fixed with a lifting screw rod 406. The lifting plate 401 is threadedly connected to the surface of the lifting screw rod 406.

[0044] By setting the lifting plate 401 and the driving motor 404, the driving motor 404 can be used to drive the lifting screw rod 406 to rotate, and then drive the lifting plate 401 to move up and down inside the lifting groove 405, so as to adjust the height of the two spray shells 403. When heating the test piece, the spray shell 403 can be raised to a certain height to avoid the spray shell 403 being baked by high temperature.

[0045] It should be noted that the cooling component 4 further includes a water storage cavity 407 formed inside the extended fixing seat 201, and a water delivery pump 408 fixedly arranged on the upper surface of the extended fixing seat 201. The input end of the water delivery pump 408 extends into the water storage cavity 407 and is fixed with a water suction pipe 409. The output end of the water delivery pump 408 is fixedly provided with a shunt conduit 410. The two output ends of the shunt conduit 410 are respectively fixedly connected to the input ends of the water guide pipes 402.

[0046] By setting the water delivery pump 408, the water delivery pump 408 can be used to transport the water in the water storage cavity 407 to the shunt conduit 410, and then the shunt conduit 410 is used to shunt the cooling water into the two water guide pipes 402, so as to use the water guide pipes 402 to transport the cooling water to the spray shell 403.

[0047] Please refer to Figure 4 , a semiconductor refrigeration sheet 411 is fixedly embedded on the inner top wall of the water storage cavity 407. A heat dissipation fan 414 is arranged on the upper surface of the extended fixing seat 201. The air inlet end of the heat dissipation fan 414 corresponds to the heat dissipation end of the semiconductor refrigeration sheet 411. The semiconductor refrigeration sheet 411 is used to cool and lower the temperature of the water in the water storage cavity 407.

[0048] By setting the semiconductor refrigeration sheet 411, the semiconductor refrigeration sheet 411 can be used to cool and lower the temperature of the water in the water storage cavity 407, and the heat dissipation fan 414 is used to ventilate and dissipate heat from the heat dissipation surface of the semiconductor refrigeration sheet 411.

[0049] A circulating water pump 412 is fixedly arranged on the back of the detection box 1. The input end of the circulating water pump 412 extends to the bottom of the detection box 1, and a circulating water supply pipe 413 is fixedly arranged at the output end of the circulating water pump 412. One end of the circulating water supply pipe 413 far from the circulating water pump 412 extends into the interior of the water storage cavity 407. Two spraying shells 403 are symmetrically distributed on both sides of the torch 202, and a plurality of water spraying holes are formed on the surface of the spraying shell 403.

[0050] It should be noted that by arranging a cooling component 4 inside the detection box 1, after the heating test of the specimen, the cooling water in the water storage cavity 407 can be input into the two spraying shells 403 by the delivery pump 408, and the two spraying shells 403 are used to spray water on the surface of the specimen for cooling at the same time, so as to facilitate the staff to quickly replace the cooled specimen, which is beneficial to improving work efficiency. Moreover, the circulating water in the water storage cavity 407 can be cooled by the semiconductor refrigerating sheet 411 to accelerate the cooling speed of the circulating water and improve the cooling effect on the specimen.

[0051] Please refer to Figure 5 and Figure 6 As shown in the figure, the specimen limiting mechanism 3 includes two fixed shells 301 distributed on the left and right inner side walls of the detection box 1. An electric telescopic rod 302 is fixedly installed inside the fixed shell 301. The telescopic end of the electric telescopic rod 302 is fixedly provided with a rotary motor 303. The output shaft of the rotary motor 303 is fixedly provided with a fixing plate. Four limiting support rods 304 are fixedly connected to the surface of the fixing plate. The end of the limiting support rod 304 is fixedly provided with a fixed disk 305. A positioning rod 306 is fixedly arranged on the surface of the fixed disk 305. A strip-shaped limiting groove 307 is formed on the surface of the positioning rod 306. The end of the positioning rod 306 is fixedly provided with an extension rod, and a temperature sensor 318 is fixedly installed at the end of the extension rod.

[0052] Please refer to Figure 5 As shown in the figure, by arranging a temperature sensor 318 at the end of the positioning rod 306, the temperature inside the specimen can be monitored by the temperature sensor 318, so as to facilitate the staff to detect the heat insulation performance of the inorganic coating.

[0053] It is worth noting that by arranging a fire resistance testing mechanism 2 and a specimen limiting mechanism 3 inside the detection box 1, when testing a specimen coated with an inorganic coating, the inner wall of the tubular specimen can be internally clamped, supported, and limited by two movable brackets 308 and a limiting top block 309 on the surface of the positioning rod 306. Then, a blowtorch 202 is used to heat the surface of the specimen by spraying fire. At the same time, a temperature sensor 318 at the end of the positioning rod 306 is used to monitor the backfire surface temperature inside the tubular specimen in real time, so as to facilitate the inspection and testing of the fireproof and heat-insulating performance of the inorganic coating on the surface of the specimen by the staff. At the same time, a rotating motor 303 can be used to drive the specimen to rotate, which is convenient for continuously testing different positions on the surface of the pipe fitting.

[0054] It should be noted that a guiding slide rod 310 is fixedly arranged on the inner wall of the strip-shaped limiting groove 307. A limiting movable sleeve 311 is slidably sleeved on the surface of the guiding slide rod 310. A compression spring 312 is sleeved and installed on the surface of the guiding slide rod 310. One end of the compression spring 312 is fixedly connected to the surface of the limiting movable sleeve 311. A detection groove 313 is formed on the inner wall of the strip-shaped limiting groove 307. A pressure sensor 314 is fixedly arranged on the inner wall of the detection groove 313.

[0055] Please refer to Figure 6 , a pressure detection block 315 is arranged inside the detection groove 313. One side of the pressure detection block 315 is in contact with the surface of the pressure sensor 314, and the other side of the pressure detection block 315 is fixedly connected to the end of the compression spring 312.

[0056] It should be noted that two movable brackets 308 are rotatably arranged on the surface of the strip-shaped limiting groove 307. A limiting top block 309 is fixedly arranged at one end of the movable bracket 308 away from the positioning rod 306. The inner wall of the tubular specimen is tightened and limited by the two limiting top blocks 309. At the same time, the compression spring 312 is used to limit the movable bracket 308, so that specimens with different diameters can be internally clamped and limited.

[0057] It is worth noting that by arranging a pressure detection block 315 and a pressure sensor 314 inside the positioning rod 306, when the inner wall of the specimen expands after being heated, the movable bracket 308 can be used to drive the limiting movable sleeve 311 to slide on the surface of the guiding slide rod 310, and then drive the compression spring 312 to squeeze the pressure detection block 315. The pressure detection block 315 generates pressure on the surface of the pressure sensor 314, so that the pressure sensor 314 can monitor the pressure, and then the expansion deformation of the specimen can be monitored in real time.

[0058] It should be further noted that movable link rods 316 are rotatably connected to both the upper and lower surfaces of the limit movable sleeve 311. One end of the movable link rod 316 away from the limit movable sleeve 311 is rotatably connected to the surface of the movable support 308. The limit top block 309 is cylindrical, and a number of anti-slip grooves 317 are formed on the surface of the limit top block 309.

[0059] Working principle: When in use, first place the tubular specimen coated with inorganic coating in the detection box 1, and use the two electric telescopic rods 302 on the left and right to drive the limit support rods 304 and the fixed disks 305 to move, so as to drive the two positioning rods 306 to be inserted into the inner wall of the specimen at the same time. Then, under the action of the compression spring 312, drive the two movable supports 308 and the limit top block 309 on the surface of the positioning rod 306 to support and limit the inner wall of the specimen. Then start the rotation motor 303 to drive the positioning rod 306 to rotate, so as to drive the specimen to rotate. At the same time, use the blowtorch 202 to fire and heat the surface of the specimen, and use the temperature sensor 318 on the surface of the positioning rod 306 to monitor the temperature of the backfire surface of the inner wall of the specimen, so as to help the staff obtain the heat insulation effect of the inorganic coating. And it can utilize the expansion deformation generated by the specimen after heating to drive the movable support 308 to rotate, and then drive the limit movable sleeve 311 to slide on the surface of the guiding slide rod 310, and at the same time drive the compression spring 312 to push the pressure detection block 315, and use the pressure detection block 315 to squeeze the pressure sensor 314, so as to monitor the deformation amount generated by the specimen after heating, which is convenient for the staff to test the fireproof and heat insulation performance of the inorganic coating on the surface of the specimen.

[0060] All the standard parts used in the present invention can be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt the conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0061] The present invention and its embodiments have been described above. This description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative efforts without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. An inorganic coating fire resistance test device, comprising a test box (1), characterized in that: The detection box (1) is provided with a fire resistance testing mechanism (2) and a test piece limiting mechanism (3) inside; The fire resistance testing mechanism (2) comprises an extension fixing seat (201) fixedly arranged on the inner wall of the detection box (1), a flamethrower (202) is fixedly mounted on the lower surface of the extension fixing seat (201), and a cooling component (4) is arranged on the surface of the extension fixing seat (201); The specimen limiting mechanism (3) comprises two fixed shells (301) distributed on the left and right inner walls of the detection box (1); an electric telescopic rod (302) is fixedly installed inside the fixed shell (301); a rotating motor (303) is fixedly arranged at the telescopic end of the electric telescopic rod (302); a fixed plate is fixedly arranged on the output shaft of the rotating motor (303); four limiting support rods (304) are fixedly connected to the surface of the fixed plate; a fixed disk (305) is fixedly arranged at the end of the limiting support rod (304); a positioning rod (306) is fixedly arranged on the surface of the fixed disk (305); a strip-shaped limiting groove (307) is opened on the surface of the positioning rod (306); two movable brackets (308) are rotatably arranged on the surface of the strip-shaped limiting groove (307); a limiting top block (309) is fixedly arranged at one end of the movable bracket (308) away from the positioning rod (306); A guide slide bar (310) is fixedly arranged on the inner wall of the strip-shaped limit groove (307); a limit movable sleeve (311) is slidingly sleeved on the surface of the guide slide bar (310); a compression spring (312) is sleeved and installed on the surface of the guide slide bar (310); one end of the compression spring (312) is fixedly connected to the surface of the limit movable sleeve (311); a detection groove (313) is opened on the inner wall of the strip-shaped limit groove (307); and a pressure sensor (314) is fixedly arranged on the inner wall of the detection groove (313); A pressure detection block (315) is disposed inside the detection groove (313), one side of the pressure detection block (315) overlaps with the surface of the pressure sensor (314), and the other side of the pressure detection block (315) is fixedly connected to the end of the compression spring (312); The upper and lower surfaces of the position-limiting movable sleeve (311) are both rotatably connected to a movable connecting rod (316); one end of the movable connecting rod (316) away from the position-limiting movable sleeve (311) is rotatably connected to the surface of the movable bracket (308); the position-limiting top block (309) is cylindrical, and a plurality of anti-slip grooves (317) are provided on the surface of the position-limiting top block (309).

2. The inorganic coating fire resistance testing device according to claim 1, characterized in that: An extension rod is fixedly provided at the end of the positioning rod (306), and a temperature sensor (318) is fixedly installed at the end of the extension rod.

3. The inorganic coating fire resistance testing device according to claim 2, characterized in that: The cooling component (4) comprises a lifting plate (401), two guide water pipes (402) are fixedly embedded on the surface of the lifting plate (401), a spray shell (403) is fixedly arranged at the bottom end of the guide water pipe (402), a driving motor (404) is fixedly arranged on the upper surface of the extension fixing seat (201), and a T-shaped lifting groove (405) is opened on the upper surface of the extension fixing seat (201), the output shaft of the driving motor (404) extends to the inside of the lifting groove (405) and is fixed with a lifting screw (406), and the lifting plate (401) is threadedly connected to the surface of the lifting screw (406).

4. The inorganic coating fire resistance testing device according to claim 3, characterized in that: The cooling component (4) further comprises a water storage chamber (407) opened inside the extension fixing seat (201), and a delivery pump (408) fixedly arranged on the upper surface of the extension fixing seat (201); the input end of the delivery pump (408) extends into the interior of the water storage chamber (407) and is fixedly provided with a water pumping pipe (409); the output end of the delivery pump (408) is fixedly provided with a diversion conduit (410); the two output ends of the diversion conduit (410) are respectively fixedly connected to the input end of the diversion water pipe (402).

5. The inorganic coating fire resistance testing device according to claim 4, characterized in that: A semiconductor cooling sheet (411) is fixedly embedded in the inner top wall of the water storage chamber (407), and a heat dissipation fan (414) is provided on the upper surface of the extended fixing seat (201); an air inlet end of the heat dissipation fan (414) corresponds to a heat dissipation end of the semiconductor cooling sheet (411), and the semiconductor cooling sheet (411) is used to cool and reduce the temperature of water in the water storage chamber (407).

6. The inorganic coating fire resistance testing device according to claim 5, characterized in that: A circulating water pump (412) is fixedly arranged on the back of the detection box (1), the input end of the circulating water pump (412) extends to the bottom of the detection box (1), and a circulating water supply pipe (413) is fixedly arranged on the output end of the circulating water pump (412), and one end of the circulating water supply pipe (413) away from the circulating water pump (412) extends to the inside of the water storage chamber (407), the two spray shells (403) are symmetrically distributed on both sides of the flame spray gun (202), and a plurality of water spray holes are opened on the surface of the spray shell (403).

7. The inorganic coating fire resistance testing device according to claim 1, characterized in that: A partition plate (5) is fixedly provided on the inner wall of the detection box (1), the partition plate (5) is located directly below the fire resistance test mechanism (2) and the specimen limiting mechanism (3), and a plurality of strip-shaped drainage holes (6) are provided on the surface of the partition plate (5).

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