Novel building material incombustibility test furnace exhaust structure

Abstract

The utility model relates to the technical field of test furnaces, and discloses a novel building material incombustibility test furnace exhaust structure which comprises a test furnace and two exhaust pipes, the bottom of the test furnace is fixedly connected with a connecting plate, the rear side of the top of the connecting plate is fixedly connected with a supporting plate, the top of the supporting plate is fixedly connected with an air inlet box, and the air inlet box is fixedly connected with an air outlet. An air inlet is formed in the top of the outer wall of the test furnace, the top of the air inlet is communicated with a connecting pipe, the other end of the connecting pipe is communicated with the left side of the rear end of the air inlet box, the left side of the top of the air inlet box is communicated with an exhaust pipe, and the adjacent sides of the two exhaust pipes are communicated with a temperature control valve; and the other ends of the two exhaust pipes are fixedly connected with heat exchangers. According to the exhaust pipe, impurities attached to the interior of the exhaust pipe can be scraped off in time through the motor and the scraping plate outside the exhaust pipe, accumulation and blockage of the impurities are prevented, and it is ensured that the exhaust pipe always keeps good ventilation performance.

Description

Technical Field

[0001] The utility model relates to the technical field of test furnaces, in particular to an exhaust structure of a novel building material non-combustibility test furnace. Background Art

[0002] The test furnace is a heating equipment widely used in industrial production and scientific research. It is mainly used for heating, sintering, melting and heat treatment of various materials or products to simulate the actual production or use environment and obtain relevant data and performance indicators. Gas will be generated during the production process of the test furnace, so a new type of building material non-combustible test furnace exhaust structure is needed.

[0003] A search revealed a Chinese patent publication number of CN214278057U, which discloses an exhaust device for a building material non-combustibility test furnace. This device, which belongs to the technical field of building material non-combustibility test furnaces, comprises a support mechanism and an exhaust mechanism for extracting harmful gases. The exhaust mechanism is provided with an air inlet and an air outlet. The support mechanism includes a first support rod vertically fixedly connected to the outer wall of the furnace body, and a support frame for mounting the exhaust mechanism's air inlet. The support frame and the exhaust mechanism's air inlet are located above the furnace body. The exhaust mechanism's air inlet is provided with an air inlet, which is arranged toward the furnace body. This application discloses that harmful gases generated by the baking of test samples are extracted from the laboratory via the exhaust mechanism, thereby effectively reducing harmful gases in the laboratory and the harm to the health of test personnel. However, existing building material non-combustibility test furnaces exhaust the flue gas from the test furnace through a single-pipe straight-through pipe. Because this pipe cannot effectively handle high-temperature flue gas, it is prone to corrosion and blockage in the pipe, affecting the continuity and reliability of the test. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a new exhaust structure for a building material non-combustibility test furnace, aiming to improve the problem in the existing technology that high-temperature flue gas cannot be effectively treated, which easily causes pipeline corrosion and blockage, affecting the continuity and reliability of the test.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a novel exhaust structure of a building material non-combustibility test furnace, comprising a test furnace and two exhaust pipes, wherein the bottom of the test furnace is fixedly connected to a connecting plate, the top rear side of the connecting plate is fixedly connected to a support plate, the top of the support plate is fixedly connected to an air intake box, an air inlet is provided on the top of the outer wall of the test furnace, the top of the air inlet is connected to a connecting pipe, the other end of the connecting pipe is connected to the left side of the rear end of the air intake box, the left side of the top of the air intake box is connected to an exhaust pipe, and the adjacent sides of the two exhaust pipes are connected. The side is connected with a temperature control valve, the other ends of the two exhaust pipes are fixedly connected to a heat exchanger, the right sides of the outer walls of the two exhaust pipes are fixedly connected to a motor, the output ends of the two motors pass through the exhaust pipes and are fixedly connected to bevel gear one, the bottoms of the outer walls of the two bevel gears one are rotatably connected to bevel gear two, the two bevel gears two are meshed with the bevel gear one, the bottoms of the outer walls of the two bevel gears two are fixedly connected to a rotating rod, the outer walls of the two rotating rods are fixedly connected to a plurality of scrapers, and the outer walls of the two exhaust pipes are provided with a cleaning mechanism.

[0006] Through the above technical solution: the test furnace is composed of two exhaust pipes, a temperature control valve, a heat exchanger, a motor, a bevel gear set and a scraper component. The test furnace is used to conduct non-combustibility tests of building materials. The generated exhaust gas is sucked in through the air inlet on the top and transported to the air intake box through the connecting pipe. The two exhaust pipes connected on the left side of the top of the air intake box are discharged. The exhaust pipe realizes effective treatment of exhaust gas and related functional guarantees under the action of subsequent structures. The adjacent side of the two exhaust pipes is connected to the temperature control valve by a flange, which can automatically adjust the opening and closing degree of the valve according to the temperature of the flue gas in the exhaust pipe to achieve precise control of the exhaust path and flow. The other ends of the two exhaust pipes are welded and fixedly connected to the heat exchanger. The main function of the heat exchanger is to transfer the heat in the high-temperature flue gas to the surrounding air, reduce the flue gas temperature, thereby reducing the thermal impact on subsequent pipelines and equipment, and extending the service life of the entire exhaust system. The right side of the outer wall of the two exhaust pipes is fixedly connected to the motor by bolts. The output end of the motor passes through the exhaust pipe through a coupling and is fixedly connected to the bevel gear. Bevel gear one is meshed with bevel gear two, and bevel gear two is rotatably connected to the support structure inside the exhaust pipe through a bearing to ensure its stable rotation. The bottom of the outer wall of bevel gear two is fixedly connected to the rotating rod, and the outer wall of the rotating rod is evenly fixedly connected to multiple scrapers to reduce blockage in the pipeline.

[0007] As a further description of the above technical solution:

[0008] The cleaning mechanism includes a filter box, the bottom of which is fixedly connected to the inside of the air intake box, and filter screens are fixedly connected to the upper and lower sides of the outer wall of the filter box. A slide groove is provided on the left side of the outer wall of the filter box, and a moving block is slidably connected to the inner wall of the slide groove. The top of the air intake box is fixedly connected to a telescopic rod, and the other end of the telescopic rod is fixedly connected to the moving block. The outer wall of the moving block is fixedly connected to a connecting rod, and brushes are rotatably connected to the left and right sides of the outer wall of the connecting rod.

[0009] Through the above technical solution: the filter screen fixedly connected to the upper and lower sides of the outer wall of the filter box is mainly used to intercept larger particles of impurities to prevent them from entering the subsequent exhaust pipe and causing blockage. A slide groove is opened in the vertical direction on the left side of the outer wall of the filter box. The moving block can slide smoothly in the slide groove. The top of the test furnace is fixedly connected to the telescopic rod by bolts. The telescopic rod is connected to the moving block, which can drive the moving block and the connecting rod to move up and down in the slide groove. The brush on the connecting rod moves downward with the moving block. During the movement, the brush brushes and cleans the surface of the filter screen to brush off the particulate impurities attached to the filter screen.

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

[0011] A plurality of connecting pieces 1 are fixedly connected to the left and right sides of the outer wall of the heat exchanger, and the bottom of the outer wall of the plurality of connecting pieces 1 is threadedly connected to the top of the air intake box.

[0012] Through the above technical solution: the left and right sides of the outer wall of the heat exchanger are fixedly connected by bolts to prevent the connecting piece from loosening during use. A threaded hole is set at the bottom of the connecting piece, which is threadedly connected to the corresponding threaded structure on the top of the test furnace to facilitate installation and disassembly.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the heat exchanger is provided with a protective shell, and the front and rear sides of the outer wall of the protective shell are fixedly connected with a plurality of connecting pieces 2, and the bottom of the outer wall of the plurality of connecting pieces 2 is threadedly connected to the top of the air intake box.

[0015] Through the above technical solution: the protective shell is threadedly connected to the top of the test furnace through multiple connecting pieces 2, so that the protective shell can be stably installed on the test furnace. During the operation of the test furnace, the vibration and thermal stress generated, the threaded connection of the connecting piece 2 can adapt to these changes to a certain extent, and keep the position of the protective shell stable. The evenly distributed design of the connecting piece 2 ensures that the protective shell is evenly stressed, avoiding local excessive stress that causes loose connection or deformation of the protective shell.

[0016] As a further description of the above technical solution:

[0017] The right side of the rear end of the air intake box is rotatably connected to a rotating door, the left side of the outer wall of the rotating door is provided with a groove, and the inner wall of the groove is fixedly connected to a handle.

[0018] Through the above technical solution: when opening the test furnace to place or inspect materials, the operator holds the handle and pulls it outward. At this time, the rotating door rotates around the rotating connection point between it and the test furnace, thereby opening the test furnace. Since the handle is set in the groove, the operator's hand can apply better force during the pulling process, and the groove design can prevent other objects from accidentally colliding with the handle during the test, causing the rotating door to open accidentally.

[0019] As a further description of the above technical solution:

[0020] A controller is fixedly connected to the left end of the top rear side of the air intake box, and the controller is electrically connected to the motor.

[0021] Through the above technical solution: the operator controls the controller to issue a stop command, and after receiving the command, the controller stops outputting the drive signal, and the motor gradually stops rotating.

[0022] As a further description of the above technical solution:

[0023] The left and right ends of the connecting rod are both provided with mounting buckles, the outer walls of the two mounting buckles are threadedly connected with screws, and one end of the two screws is threadedly connected to the connecting rod.

[0024] Through the above technical solution: the mounting buckles are set at both ends of the connecting rod and fixed to the connecting rod by screws. When the staff needs to replace the brush, they just turn the screws to disassemble it, remove the brush, clean it, and then install it.

[0025] As a further description of the above technical solution:

[0026] The left and right sides of the outer wall of the support plate are fixedly connected with connecting pieces three, and the bottom of the outer walls of the two connecting pieces three are threadedly connected to the top of the connecting plate.

[0027] Through the above technical solution: align the bottom of the connecting piece three with the mounting surface at the top of the connecting plate to connect, ensure that the relative position of the connecting piece three and the connecting plate is accurate, pass the bolt through the threaded hole of the connecting piece three, and screw it into the corresponding threaded hole of the connecting plate to achieve strengthened fixation of the support plate.

[0028] The utility model has the following beneficial effects:

[0029] 1. In the present invention, the connection design of the connecting plate at the bottom of the test furnace, the support plate and the air inlet box allows the gas discharged from the test furnace to be directly transported to the air inlet box through the air inlet and the connecting pipe. The temperature control valve on the exhaust pipe can accurately adjust the valve opening to achieve precise control of the exhaust temperature. The motor and scraper outside the exhaust pipe can promptly scrape off impurities attached to the exhaust pipe to prevent accumulation and blockage of impurities, ensure that the exhaust pipe always maintains good ventilation performance, and maintains the normal working pressure and flow of the exhaust system.

[0030] 2. In the utility model, the filter screens arranged on the upper and lower sides of the outer wall of the filter box can effectively intercept impurities in the exhaust gas of the test furnace at multiple levels. When the impurities blocked by the filter screen are attached to the outer wall of the filter screen, the telescopic rod on the air intake box drives the moving block to move in the slide groove. The outer wall of the moving block is a connecting rod, which drives the brush to move on the filter screen to clean the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a three-dimensional diagram of the exhaust structure of a new type of building material non-combustibility test furnace proposed in this utility model;

[0032] Figure 2 This is a front view of the exhaust structure of a new type of building material non-combustibility test furnace proposed in this utility model;

[0033] Figure 3 This is a partial structural diagram showing the exhaust structure of a new type of building material non-combustibility test furnace proposed in this utility model;

[0034] Figure 4 This is a partial structural breakdown diagram of the exhaust structure of a new type of building material non-combustibility test furnace proposed in this utility model;

[0035] Figure 5 This is a cross-sectional view of the exhaust structure of a new type of building material non-combustibility test furnace proposed in this utility model;

[0036] Figure 6 This is a schematic diagram of the cleaning mechanism of the exhaust structure of a new type of building material non-combustibility test furnace proposed in the utility model.

[0037] Legend:

[0038] 1. Test furnace; 2. Cleaning mechanism; 201. Filter box; 202. Filter screen; 203. Slide; 204. Moving block; 205. Connecting rod; 206. Brush; 207. Telescopic rod; 3. Air inlet; 4. Connecting pipe; 5. Air inlet box; 6. Exhaust pipe; 7. Temperature control valve; 8. Heat exchanger; 9. Motor; 10. Bevel gear 1; 11. Bevel gear 2; 12. Rotating rod; 13. Scraper; 14. Connecting piece 1; 15. Protective shell; 16. Connecting piece 2; 17. Groove; 18. Handle; 19. Mounting buckle; 20. Screw; 21. Connecting plate; 22. Support plate; 23. Connecting piece 3; 24. Rotating door; 25. Controller. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] Reference Figure 1 、 Figure 2 and Figure 4 , the utility model provides an embodiment: a new type of building material non-combustibility test furnace exhaust structure, including a test furnace 1 and two exhaust pipes 6, the bottom of the test furnace 1 is fixedly connected with a connecting plate 21, the connecting plate 21 and the top rear side are fixedly connected with a support plate 22, the top of the support plate 22 is fixedly connected with an air intake box 5, the top of the outer wall of the test furnace 1 is provided with an air inlet 3, the top of the air inlet 3 is connected with a connecting pipe 4, the other end of the connecting pipe 4 is connected to the rear end left side of the air intake box 5, the top left side of the air intake box 5 is connected with an exhaust pipe 6, and the adjacent sides of the two exhaust pipes 6 are connected with a temperature control Valve 7, the other ends of the two exhaust pipes 6 are fixedly connected to the heat exchanger 8, the right sides of the outer walls of the two exhaust pipes 6 are fixedly connected to the motor 9, the output ends of the two motors 9 pass through the exhaust pipe 6 and are fixedly connected to the bevel gear 10, the bottom of the outer wall of the two bevel gears 10 are rotatably connected to the bevel gear 2 11, the two bevel gears 2 11 are meshed with the bevel gear 10, the bottom of the outer wall of the two bevel gears 2 11 are fixedly connected to the rotating rod 12, the outer walls of the two rotating rods 12 are fixedly connected to a plurality of scrapers 13, and the outer walls of the two exhaust pipes 6 are provided with a cleaning mechanism 2;

[0041] Specifically, when conducting the incombustibility test of building materials, various gas products will be generated in the test furnace 1, which will rise upward due to thermal expansion. An air inlet 3 is provided on the top of the test furnace 1, and the air inlet 3 will suck the gas into the connecting pipe 4 and transport it to the air inlet box 5 through the connecting pipe 4. The left side of the air inlet box 5 is connected to the exhaust pipe 6, and the gas will be discharged outward along the exhaust pipe 6. A temperature control valve 7 is connected to the adjacent side of the two exhaust pipes 6 for adjusting the temperature of the exhaust gas. The gas discharged from the exhaust pipe 6 carries the heat in the test furnace 1, and the other ends of the two exhaust pipes 6 are fixedly connected to a heat exchanger 8. After the hot gas enters the heat exchanger 8, the hot gas and another medium in the heat exchanger 8 will exchange heat inside the heat exchanger 8. The heat of the hot gas is transferred to the low-temperature medium, which reduces the temperature of the hot gas and realizes heat recovery. A motor 9 is fixedly connected to the right side of the outer wall of the two exhaust pipes 6. The motor 9 drives the bevel gear 10 fixedly connected thereto to rotate. When gear 10 rotates, it is in meshing connection with bevel gear 2 11, which will drive bevel gear 2 11 to rotate, and the rotation direction of bevel gear 2 11 is perpendicular to the rotation direction of bevel gear 10, thereby realizing the effect of changing the direction of rotation of motor 9. When bevel gear 2 11 rotates, the rotating rod 12 fixedly connected to the bottom of the outer wall will also rotate synchronously, and the outer wall of the rotating rod 12 is fixedly connected to a plurality of scrapers 13, which drive the scrapers 13 to make circular motion in the exhaust pipe 6. The scrapers 13 will continuously scrape the inner wall of the exhaust pipe 6. During the exhaust process of the test furnace 1, some solid particle impurities will be mixed in the gas. These impurities are easy to adhere to the inner wall of the exhaust pipe 6. As time accumulates, it will affect the patency of the exhaust pipe 6. The scraping action of the scraper 13 can timely scrape off the impurities attached to the inner wall, keep the inside of the exhaust pipe 6 clean, ensure the smoothness of the exhaust, and ensure that the entire exhaust structure can work continuously and stably.

[0042] Reference Figure 6 The cleaning mechanism 2 includes a filter box 201, the bottom of the filter box 201 is fixedly connected to the inside of the test furnace 1, and the upper and lower sides of the outer wall of the filter box 201 are fixedly connected with filter screens 202. A chute 203 is provided on the left side of the outer wall of the filter box 201, and a moving block 204 is slidably connected to the inner wall of the chute 203. A telescopic rod 207 is fixedly connected to the top of the air intake box 5, and the other end of the telescopic rod 207 is fixedly connected to the moving block 204. The outer wall of the moving block 204 is fixedly connected with a connecting rod 205, and the left and right sides of the outer wall of the connecting rod 205 are rotatably connected with brushes 206;

[0043] Specifically, during the operation of the test furnace 1, the gas sucked in by the air intake box 5 will pass through the filter box 201 of the cleaning mechanism 2, and the filter screen 202 fixedly connected to the upper and lower sides of the outer wall of the filter box 201 will play a preliminary filtering role. During the filtering process of the filter screen 202, when the outer wall is prone to accumulate filtered impurities and adhere to it, the telescopic rod 207 fixedly connected to the top of the air intake box 5 starts to work, and the telescopic rod 207 is extended and retracted to drive the moving block 204 fixedly connected thereto to slide up and down in the chute 203 on the left side of the outer wall of the filter box 201, and the moving block 204 is moved up and down. During the downward sliding process, the connecting rod 205 fixedly connected to its outer wall will also move up and down. Since the left and right sides of the outer wall of the connecting rod 205 are rotatably connected to the brushes 206, the brushes 206 rotate due to contact and relative movement with the surface of the filter 202 while moving up and down with the connecting rod 205, so that the brushes 206 can comprehensively clean the surface of the filter 202 and brush off impurities attached to the filter 202, ensuring that the filter 202 is always in a good filtering performance state, thereby extending the maintenance cycle and service life of the equipment.

[0044] Reference Figure 2 、 Figure 4 and Figure 5 , the left and right sides of the outer wall of the heat exchanger 8 are fixedly connected with a plurality of connecting pieces 14, and the bottom of the outer wall of the plurality of connecting pieces 14 is threadedly connected to the top of the air intake box 5; the outer wall of the heat exchanger 8 is provided with a protective shell 15, and the front and rear sides of the outer wall of the protective shell 15 are fixedly connected with a plurality of connecting pieces 2 16, and the bottom of the outer wall of the plurality of connecting pieces 2 16 is threadedly connected to the top of the air intake box 5; the right side of the rear end of the air intake box 5 is rotatably connected to a rotating door 24, and a groove 17 is opened on the left side of the outer wall of the rotating door 24, and a handle 18 is fixedly connected to the inner wall of the groove 17;

[0045] Specifically, the multiple connecting pieces 14 fixedly connected on the left and right sides of the outer wall of the heat exchanger 8 have the main function of firmly mounting the heat exchanger 8 on the top of the air intake box 5. The bottom of the outer wall of the connecting piece 14 is connected to the top of the air intake box 5 by a threaded connection. During installation, the bolts are passed through the mounting holes on the connecting piece 14 and screwed into the corresponding threaded holes on the top of the air intake box 5. The bolts are tightened to press the connecting piece 14 tightly against the air intake box 5, thereby firmly fixing the heat exchanger 8. The protective shell 15 of the heat exchanger 8 is used to protect the heat exchanger 8 from external factors and ensure its normal operation and service life. The outer shell 15 The multiple connecting pieces 2 16 fixedly connected on the front and rear sides of the wall play a fixing role. The bottom of the outer wall is threadedly connected to the top of the air intake box 5. The connecting piece 2 16 is fixed to the air intake box 5 with bolts, so that the protective shell 15 can stably cover the outside of the heat exchanger 8, playing the role of a protective barrier. The rotating door 24 on the right side of the rear end of the air intake box 5 is installed on the air intake box 5 by a rotating connection. When the rotating door 24 needs to be opened, the operator holds the handle 18, and the handle 18 is fixed in the groove 17 opened on the left side of the outer wall of the rotating door 24. By applying external force to pull the handle 18, the rotating door 24 is rotated outward around the rotating axis to open.

[0046] Reference Figure 1 、 Figure 2 and Figure 3 , the left end of the top rear side of the air intake box 5 is fixedly connected to a controller 25, and the controller 25 is electrically connected to the motor 9; the left and right ends of the connecting rod 205 are provided with mounting buckles 19, and the outer walls of the two mounting buckles 19 are threadedly connected with screws 20, and one end of the two screws 20 is threadedly connected to the connecting rod 205; the left and right sides of the outer wall of the support plate 22 are fixedly connected with connecting pieces 23, and the bottom of the outer walls of the two connecting pieces 23 are threadedly connected to the top of the connecting plate 21;

[0047] Specifically, the controller 25 on the left side of the rear end of the top of the air intake box 5 is electrically connected to the motor 9, and is responsible for accurately controlling the operation of the motor 9 and determining the start, stop and speed adjustment actions of the motor 9. The mounting buckle 19 is installed at both ends of the connecting rod 205 and is connected to the connecting rod 205 by a screw 20. When the staff needs to replace or clean the brush 206, after tightening the screw 20, remove the mounting buckle 19, take out the brush 206 for cleaning and replacement, and the connecting piece three 23 is fixedly connected to the left and right sides of the support plate 22, and is threadedly connected to the connecting plate 21 to achieve enhanced fixation of the support plate 22.

[0048] Working principle: When the staff conducts the non-combustibility test of building materials, various gas products will be generated in the test furnace 1. Due to thermal expansion, they will rise upward and enter the air inlet 3. The air inlet 3 is connected to the connecting pipe 4. The gas is transported to the air inlet box 5 through the connecting pipe 4. The top left side of the air inlet box 5 is connected to the exhaust pipe 6, and the gas will be discharged outward along the exhaust pipe 6. A temperature control valve 7 is connected to the adjacent side of the two exhaust pipes 6 for adjusting the temperature of the exhaust gas, and the other ends of the two exhaust pipes 6 are fixedly connected to a heat exchanger 8. When the hot gas enters the heat exchanger 8, the hot gas and another medium in the heat exchanger 8 will exchange heat. The heat of the hot gas is transferred to the low-temperature medium, which reduces the temperature of the hot gas and realizes heat recovery. The right side of the outer wall of the two exhaust pipes 6 is fixedly connected to a motor 9, which will drive the motor 9 fixedly connected to it. When the bevel gear 10 is connected, the bevel gear 10 rotates, and when the bevel gear 10 rotates, it drives the bevel gear 2 11 to rotate. When the bevel gear 2 11 rotates, the rotating rod 12 fixedly connected to the bottom of the outer wall will also rotate synchronously. The outer wall of the rotating rod 12 is fixedly connected to a plurality of scrapers 13, and the rotating rod 12 drives the scrapers 13 to do circular motion in the exhaust pipe 6. The scrapers 13 will continuously scrape the inner wall of the exhaust pipe 6. During the exhaust process of the test furnace 1, some solid particle impurities will be mixed in the gas. As the connecting pipe 4 enters the air intake box 5, these impurities are easily attached to the inner wall of the exhaust pipe 6. As time accumulates, it will affect the patency of the exhaust pipe 6. The scraping action of the scraper 13 can promptly scrape off the impurities attached to the inner wall, keep the inside of the exhaust pipe 6 clean, ensure the smoothness of the exhaust, and ensure that the entire exhaust structure can work continuously and stably.

[0049] And during the operation of the test furnace 1, the gas sucked in by the air intake box 5 will first pass through the filter box 201 of the cleaning mechanism 2, and the filter screen 202 fixedly connected to the upper and lower sides of the outer wall of the filter box 201 will play a role in preliminary filtering. During the filtering process of the filter screen 202, when the outer wall is prone to accumulate filtered impurities, the telescopic rod 207 fixedly connected to the top of the air intake box 5 starts to work, and the telescopic rod 207 is extended and retracted to drive the moving block 204 fixedly connected thereto to slide up and down in the chute 203 on the left side of the outer wall of the filter box 201, and the moving block 204 slides up and down During the movement, the connecting rod 205 fixedly connected to its outer wall will also move up and down. Since the left and right sides of the outer wall of the connecting rod 205 are rotatably connected to the brushes 206, the brushes 206 rotate due to contact and relative movement with the surface of the filter 202 while moving up and down with the connecting rod 205, so that the brushes 206 can comprehensively clean the surface of the filter 202 and brush off the impurities attached to the filter 202, ensuring that the filter 202 is always in a good filtering performance state, thereby extending the maintenance cycle and service life of the equipment.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel exhaust structure for a building material non-combustibility test furnace, comprising a test furnace (1) and two exhaust pipes (6), characterized in that: The bottom of the test furnace (1) is fixedly connected to a connecting plate (21), the top rear side of the connecting plate (21) is fixedly connected to a support plate (22), the top of the support plate (22) is fixedly connected to an air intake box (5), an air inlet (3) is provided on the top of the outer wall of the test furnace (1), the top of the air inlet (3) is connected to a connecting pipe (4), the other end of the connecting pipe (4) is connected to the left side of the rear end of the air intake box (5), the top left side of the air intake box (5) is connected to an exhaust pipe (6), the adjacent side of the two exhaust pipes (6) is connected to a temperature control valve (7), the other ends of the two exhaust pipes (6) are fixedly connected to a heat exchanger (7). The converter (8) is fixedly connected to the right side of the outer wall of the two exhaust pipes (6), the output ends of the two motors (9) pass through the exhaust pipe (6) and are fixedly connected to the bevel gear one (10), the bottom of the outer wall of the two bevel gears one (10) is rotatably connected to the bevel gear two (11), the two bevel gears two (11) are meshed with the bevel gear one (10), the bottom of the outer wall of the two bevel gears two (11) is fixedly connected to the rotating rod (12), the outer wall of the two rotating rods (12) is fixedly connected to a plurality of scrapers (13), and the outer walls of the two exhaust pipes (6) are provided with a cleaning mechanism (2).

2. The exhaust structure of the novel building material non-combustibility test furnace according to claim 1 is characterized by: The cleaning mechanism (2) comprises a filter box (201), the bottom of the filter box (201) is fixedly connected to the inside of the test furnace (1), the upper and lower sides of the outer wall of the filter box (201) are fixedly connected with filter screens (202), a chute (203) is provided on the left side of the outer wall of the filter box (201), the inner wall of the chute (203) is slidably connected with a moving block (204), the top of the air intake box (5) is fixedly connected with a telescopic rod (207), the other end of the telescopic rod (207) is fixedly connected to the moving block (204), the outer wall of the moving block (204) is fixedly connected with a connecting rod (205), and the left and right sides of the outer wall of the connecting rod (205) are rotatably connected with brushes (206).

3. The exhaust structure of the novel building material non-combustibility test furnace according to claim 1 is characterized by: A plurality of connecting pieces (14) are fixedly connected to the left and right sides of the outer wall of the heat exchanger (8), and the bottoms of the outer walls of the plurality of connecting pieces (14) are threadedly connected to the top of the air intake box (5).

4. The exhaust structure of the novel building material non-combustibility test furnace according to claim 1 is characterized by: The outer wall of the heat exchanger (8) is provided with a protective shell (15), and the front and rear sides of the outer wall of the protective shell (15) are fixedly connected with a plurality of connecting pieces (16), and the bottom of the outer wall of the plurality of connecting pieces (16) is threadedly connected to the top of the air intake box (5).

5. The exhaust structure of the novel building material non-combustibility test furnace according to claim 1 is characterized by: The right side of the rear end of the air intake box (5) is rotatably connected to a rotating door (24), the left side of the outer wall of the rotating door (24) is provided with a groove (17), and the inner wall of the groove (17) is fixedly connected to a handle (18).

6. The exhaust structure of the novel building material non-combustibility test furnace according to claim 1 is characterized by: A controller (25) is fixedly connected to the left end of the top rear side of the air intake box (5), and the controller (25) is electrically connected to the motor (9).

7. The exhaust structure of the novel building material non-combustibility test furnace according to claim 2 is characterized by: The left and right ends of the connecting rod (205) are both provided with mounting buckles (19), the outer walls of the two mounting buckles (19) are threadedly connected with screws (20), and one end of the two screws (20) is threadedly connected to the connecting rod (205).

8. The exhaust structure of the novel building material non-combustibility test furnace according to claim 1 is characterized by: The left and right sides of the outer wall of the support plate (22) are fixedly connected with a connecting piece three (23), and the bottom of the outer wall of the two connecting pieces three (23) is threadedly connected to the top of the connecting plate (21).

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