A coal combustion and fire extinguishing condition test device

Abstract

The present invention belongs to the technical field of combustion test, specifically a coal combustion fire extinguishing working condition test device; it comprises a test bench and a protection box, the protection box is installed on the top surface of the test bench, and a sprinkler is installed on the inner top surface of the protection box; a driving motor is provided on the bottom surface of the test bench, a driving pulley is installed on the output end of the driving motor, and a position adjustment rotation direction component is provided on the driving pulley; the position adjustment rotation direction component comprises a transmission belt, one end of the transmission belt is connected to the driving pulley, and the other end is connected to a rotating pulley, a rotating shaft is installed on the rotating pulley, the rotating shaft passes through the test bench and is connected to a rotating gear, and the rotating gear is meshed and connected to a rotating gear ring; through the position adjustment rotation direction component, the coal in the combustion tube is prevented from not being able to burn fully, the coal is ignited evenly, and the phenomenon that part of the coal is not ignited after the test is completed is avoided, the test cost is reduced while avoiding material waste, the use effect of the device is improved and its limitations during use are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of combustion tests, and in particular relates to a coal combustion and fire extinguishing working condition test device. Background Art

[0002] Coal is a solid combustible mineral that was gradually formed when ancient plants were buried underground and underwent complex biochemical and physicochemical changes. In real environments, fires or other safety problems may occur when coal burns, so researchers or engineers need to conduct experiments to study the coal combustion process and the effectiveness of fire extinguishing methods.

[0003] The experimental process requires the ignition of the coal required for the test. The existing coal combustion and fire extinguishing condition test device can only ignite the coal at a single angle during use, which will cause the coal to fail to burn fully, resulting in the phenomenon that some coal has not started to burn after the test. This leads to waste of test materials and increased test costs, thereby reducing the use effect of the device and having strong limitations when used. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a coal combustion and fire extinguishing condition test device, which effectively solves the problems in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coal combustion fire extinguishing working condition test device, comprising a test bench and a protection box, the protection box is installed on the top surface of the test bench, and a sprinkler is installed on the inner top surface of the protection box; a driving motor is provided on the bottom surface of the test bench, a driving pulley is installed on the output end of the driving motor, and a position adjustment rotation direction component is provided on the driving pulley;

[0006] The position adjustment rotation direction component includes a transmission belt, one end of the transmission belt is connected to the driving pulley, and the other end is connected to the rotating pulley, a rotating shaft is installed on the rotating pulley, the rotating shaft passes through the test bench and is connected to the rotating gear, the rotating gear is meshed and connected to the rotating gear ring, the rotating gear ring is also meshed with two linkage gears, a linkage shaft is installed on the linkage gear, the linkage shaft passes through the test bench and is connected to a reciprocating disc, a reciprocating air blocking mechanism is arranged on the reciprocating disc; the reciprocating disc is located on the bottom surface of the test bench; the rotating gear ring is located in the protective box; the two linkage gears are symmetrically arranged; the linkage gear is also provided with a single-rotation check valve for connecting the linkage shaft.

[0007] Preferably, the reciprocating air-blocking mechanism comprises a reciprocating round rod arranged on a reciprocating disc, a reciprocating cross block sliding on the reciprocating round rod, two guide cylinders are provided on the side of the reciprocating cross block away from the driving motor, and the two guide cylinders are symmetrically arranged along the transverse center axis of the reciprocating cross block; a guide base plate slides on the guide cylinder, and the guide base plate is fixed on the test bench; a guide U rod is installed on one end of the two guide cylinders away from the reciprocating cross block, and the two guide U rods are commonly connected to the extrusion square plate.

[0008] Preferably, the forward air blocking mechanism also includes air outlet square grooves arranged on both sides of the protective box, a filter core plate is installed on the side of the air outlet square groove close to the driving motor, and a ventilation square plate is installed on the side of the air outlet square groove away from the driving motor, and valves are installed on the ventilation square plate and the extrusion square plate; two air storage square boxes are also provided on the protective box, and the two air storage square boxes are symmetrical on both sides of the protective box; the air storage square box is connected to the air outlet square groove, and the ventilation square plate is located in the air storage square box; the extrusion square plate is slidably connected to the air storage square box; air storage square holes are symmetrically provided on the top and bottom surfaces of the air storage square box, and the air storage square holes are connected to air exchange boxes, and the two air exchange boxes on the top surface of the air storage square box are commonly connected to a U-shaped pipe, and a circulation and scraping unit is also provided on the U-shaped pipe; a high-pressure nozzle is provided on the side of the U-shaped pipe.

[0009] Preferably, a plurality of rotating blocks are installed on the inner side wall of the rotating gear ring, and the plurality of rotating blocks are slidably connected with a rotating ring. The rotating ring is fixed to the top surface of the test bench and has a height difference with the top surface of the test bench. A combustion tube is also installed on the top surface of the test bench, and the combustion tube is coaxial with the center of the rotating ring, and the diameter of the combustion tube is smaller than the rotating ring.

[0010] Preferably, the circulating scraping unit includes a driving shaft, a plurality of fan blades are installed at the middle end of the driving shaft, and the gas ejected from the output end of the high-pressure nozzle acts on the plurality of fan blades to rotate the driving shaft; a driving base is symmetrically arranged on the driving shaft, and the driving base is arranged on the gas storage box; and compound cams are also installed on both ends of the driving shaft.

[0011] Preferably, a gas supply circular pipe is installed on the side of the ventilation box, and the output end of the gas supply circular pipe passes through the protection box and is located inside it; an intake square pipe is installed on the inner side of the protection box, and the square mouth of the intake square pipe expands outward and is arranged on the air outlet square groove.

[0012] Preferably, the top surfaces of the plurality of rotating blocks are commonly connected to a fixed circular ring, the diameter of which is larger than the combustion tube; and a plurality of flamethrowers are mounted on the fixed circular ring, and the plurality of flamethrowers are all facing the combustion tube.

[0013] Preferably, the circulating scraping unit also includes a displacement cylinder, which is located on the rotation path of the compound cam; a positioning slide is installed on the displacement cylinder, and a positioning substrate slides on the positioning slide, and the positioning substrate is arranged on the air storage box; a displacement spring is sleeved on the displacement cylinder, one end of the displacement spring is connected to the positioning substrate, and the other end is connected to a displacement limit plate, and the displacement limit plate is arranged at the end of the positioning slide away from the displacement cylinder.

[0014] Preferably, the single-rotation check device includes a plurality of limit-stop bevel grooves arranged on the inner side wall of the linkage gear; a plurality of limit-stop slide grooves are arranged on the outer side wall of the linkage shaft, and the number of the limit-stop slide grooves and the limit-stop bevel grooves is the same; a limit-stop bevel block is slid in the limit-stop slide groove, the limit-stop bevel block and the limit-stop bevel groove cooperate with each other, and the limit-stop bevel groove is located on the moving path of the limit-stop bevel block; an extrusion spring is also arranged in the limit-stop slide groove, and one end of the extrusion spring close to the limit-stop bevel block is connected to its inner bottom surface, and the end of the extrusion spring away from the limit-stop bevel block is fixedly connected to the inner bottom surface of the limit-stop slide groove.

[0015] Preferably, an extended square rod is installed on the displacement limiting plate, and the extended square rod passes through the protection box and the suction square tube and is connected with a scraper. The scraper is located in the suction square tube and contacts the surface of the filter core plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) By starting the flamethrower, the flamethrower ignites the coal placed in the combustion tube to burn the coal. At this time, by starting the driving motor, the driving pulley on the output end rotates, and the driving pulley is driven to rotate through the transmission belt, so that the rotating shaft on it rotates and drives the rotating gear to rotate, so that the meshing rotating gear ring rotates, and the several rotating blocks on it rotate on the rotating rotating ring, which supports the rotating gear ring and the flamethrower, avoiding the phenomenon of shaking during rotation, and improving the stability of the flamethrower during use, thereby driving the flamethrower on the fixed circular ring to rotate, so that the several flamethrowers rotate around the combustion tube, so that the coal in the combustion tube cannot be fully burned, and the coal is evenly ignited, so as to avoid the phenomenon that some coal is not ignited after the test. The test cost is reduced while avoiding material waste, improving the use effect of the device and reducing its limitations during use;

[0018] (2) When the gas is discharged through the high-pressure nozzle, it will act on a number of fan blades, converting wind energy into kinetic energy, thereby driving the drive shaft to rotate, causing the reciprocating cams at both ends to rotate, causing it to continuously contact the displacement cylinder, causing it to continuously move back and forth on the positioning base plate through the positioning slide column, so that the displacement spring is continuously in a buffering and resetting state, and then the scraper is driven to move back and forth in the suction square tube through the extended square rod. When the reciprocating air blocking mechanism draws out the gas inside the protective box, the coal inside it will produce debris and residues when it burns, which will adhere to the filter core plate under the action of suction. At this time, through the reciprocating movement of the scraper, the impurities adhered to the filter core plate are cleaned and set to avoid clogging it and reducing the exhaust effect, thereby improving the use effect of the reciprocating air blocking mechanism; at the same time, the fallen residue will be on the suction square tube, which is convenient for the operator to clean it in a centralized manner, avoiding splashing everywhere and making it difficult to clean, thereby improving the use effect of the device; at the same time, the suction square tube is set to expand outward, which can effectively drain the gas inside the protective box, reducing the limitations of the device when in use;

[0019] (3) The gas in the gas storage box enters the ventilation box through the gas storage hole, and is then discharged through the U-shaped pipe and high-pressure nozzle. The gas is filtered through the filter core plate and is a non-polluting gas, which avoids pollution to the external environment and improves the environmental protection effect of the device. As a result, the inside of the protection box gradually becomes a vacuum state, which, in conjunction with the sprinkler, further improves the fire extinguishing effect of the device on coal combustion. At the same time, the protection box is made of transparent material, which helps the operator to observe the specific situation of the test and improves the use effect of the device. At the same time, when the extracted gas enters the ventilation box, the valve on the gas transmission pipe (not shown in the figure) can be operated to make the gas According to the actual use situation, the gas pipe is put into the gas pipe, and the middle end of the gas pipe can be provided with a gas tank (with carbon dioxide inside and a pressure sensor on the surface, which are not shown in the figure). By detecting the pressure of the gas output to the gas pipe, the carbon dioxide in the gas tank is transported to the protective box through the second half of the gas pipe. Since carbon dioxide is an inert gas, it does not support combustion and will not participate in the combustion reaction. Injecting carbon dioxide into the box can dilute the oxygen concentration in the box and reduce the oxygen concentration below the critical value required for coal combustion, thereby preventing combustion and improving the fire extinguishing performance of the device for coal combustion. The amount of carbon dioxide is set quantitatively to avoid poisoning of personnel and improve the use effect of the device.

[0020] (4) When the rotating gear ring rotates clockwise, the meshing linkage gear rotates, so that the inclined surfaces of the limiting inclined grooves on the linkage gear continuously contact the inclined surfaces of the limiting inclined blocks on the linkage shaft, so that it is limited in the limiting groove and reciprocates, so that the several extrusion springs are continuously in a buffering and resetting state, so that the linkage shaft is in a non-rotating state, which means that the forward air blocking mechanism and the circulating scraping unit cannot work, so that the coal in the combustion cylinder in the protection box can be fully burned and used to observe the combustion state. When the rotating gear ring rotates counterclockwise, it will mesh The linkage gear rotates, causing the right-angled surface of the limit inclined groove on it to contact the right-angled surface on the limit inclined block, thereby pressing against the limit inclined block, preventing it from moving in the limit sliding groove, and preventing the extrusion spring from being in a buffer state, thereby driving the linkage shaft to rotate, so that they both drive the forward air blocking mechanism and the circulating scraping unit to work, and are used to extinguish the coal burning in the combustion cylinder, so that the device only needs one driving source when working, reducing the limitations of the device during use and avoiding waste of resources, thereby reducing the test cost of the device and improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] In the attached picture:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the protection box of the present invention;

[0025] Figure 3 This is a schematic diagram of the U-shaped pipeline structure of the present invention;

[0026] Figure 4 It is a cross-sectional exploded view of the limiting chute of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the scraper of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the rotating block of the present invention;

[0029] Figure 7 This is a schematic diagram of the reciprocating cross block structure of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the compound cam of the present invention;

[0031] Fig. 9 This is a cross-sectional view of the square gas storage box of the present invention;

[0032] In the figure: 1. test bench; 2. protection box; 3. sprinkler; 4. drive motor; 5. drive pulley; 6. transmission belt; 7. rotating pulley; 8. rotating shaft; 9. rotating gear; 10. rotating gear ring; 11. linkage gear; 12. linkage rotating shaft; 13. reciprocating disc; 14. reciprocating round rod; 15. reciprocating horizontal block; 16. guide cylinder; 17. guide base plate; 18. guide U rod; 19. extrusion square plate; 20. outlet square groove; 21. filter core plate; 22. ventilation square plate; 23. gas storage square box; 24. gas storage square hole; 25. ventilation box ; 26. U-shaped pipe; 27. High-pressure nozzle; 28. Rotating block; 29. ​​Rotating ring; 30. Combustion tube; 31. Driving shaft; 32. Fan blades; 33. Driving base; 34. Compound cam; 35. Gas pipe; 36. Intake square pipe; 37. Fixed ring; 38. Flamethrower; 39. Displacement cylinder; 40. Positioning slide column; 41. Positioning base plate; 42. Displacement spring; 43. Displacement limit plate; 44. Limiting inclined groove; 45. Limiting inclined block; 46. Limiting slide groove; 47. Extrusion spring; 48. Extended square rod; 49. Scraper. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Example, by Figures 1 to 9The present invention comprises a test bench 1 and a protection box 2, the protection box 2 is mounted on the top surface of the test bench 1, and a sprinkler 3 is mounted on the inner top surface of the protection box 2; a driving motor 4 is mounted on the bottom surface of the test bench 1, a driving pulley 5 is mounted on the output end of the driving motor 4, and a position adjustment rotation direction assembly is arranged on the driving pulley 5; the position adjustment rotation direction assembly comprises a transmission belt 6, one end of the transmission belt 6 is connected to the driving pulley 5, and the other end is connected to a rotating pulley 7, a rotating shaft 8 is mounted on the rotating pulley 7, the rotating shaft 8 passes through the test bench 1 and is connected to a rotating gear 9, the rotating gear 9 is meshedly connected to a rotating gear ring 10, the rotating gear ring 10 is also meshed with two linkage gears 11, a linkage rotating shaft 12 is mounted on the linkage gear 11, the linkage rotating shaft 12 passes through the test bench 1 and is connected to a reciprocating disc 13, and a reciprocating air blocking mechanism is arranged on the reciprocating disc 13; the reciprocating disc 13 Located on the bottom surface of the test bench 1; the rotating gear ring 10 is located in the protective box 2; the two linkage gears 11 are symmetrically arranged; the linkage gear 11 is also provided with a single-rotation check valve for connecting the linkage shaft 12; a plurality of rotating blocks 28 are installed on the inner side wall of the rotating gear ring 10, and a plurality of rotating blocks 28 are slidably connected with a rotating ring 29, and the rotating ring 29 is fixed to the top surface of the test bench 1 and has a height difference with the top surface of the test bench 1; a combustion tube 30 is also installed on the top surface of the test bench 1, and the combustion tube 30 is coaxial with the center of the rotating ring 29, and the diameter of the combustion tube 30 is smaller than the rotating ring 29; the top surfaces of the plurality of rotating blocks 28 are commonly connected with a fixed circular ring 37, and the diameter of the fixed circular ring 37 is larger than that of the combustion tube 30; a plurality of flamethrowers 38 are installed on the fixed circular ring 37, and the plurality of flamethrowers 38 are all facing the combustion tube 30;

[0035] The operator puts the tested coal into the combustion tube 30, and then starts the flamethrower 38 to ignite the coal placed in the combustion tube 30 for coal combustion. At this time, the driving motor 4 is started to rotate the driving pulley 5 on the output end, so that the rotating pulley 7 is driven to rotate through the transmission belt 6, the rotating shaft 8 on it is rotated and the rotating gear 9 is driven to rotate, so that the meshing rotating gear ring 10 is rotated, and the several rotating blocks 28 on it are rotated on the rotating rotating ring 29, which plays a supporting role for the rotating gear ring 10 and the flamethrower 38, avoiding the phenomenon of shaking during rotation, and improving the stability of the flamethrower 38 during use, thereby driving the flamethrower 38 on the fixed ring 37 to rotate, so that the several flamethrowers 38 rotate around the combustion tube 30, so that they rotate to ignite the coal, avoid the coal in the combustion tube 30 cannot be fully burned, and evenly ignite the coal, and avoid the phenomenon that some coal is not ignited after the test, thereby reducing the test cost and avoiding material waste, improving the use effect of the device and reducing its limitations during use.

[0036] The reciprocating air blocking mechanism of the present embodiment includes a reciprocating round rod 14 arranged on a reciprocating disc 13, a reciprocating horizontal block 15 is slidably arranged on the reciprocating round rod 14, and two guide cylinders 16 are arranged on the side of the reciprocating horizontal block 15 away from the driving motor 4, and the two guide cylinders 16 are symmetrically arranged along the horizontal center axis of the reciprocating horizontal block 15; a guide base plate 17 is slidably arranged on the guide cylinder 16, and the guide base plate 17 is fixed on the test bench 1; a guide U rod 18 is installed on one end of the two guide cylinders 16 away from the reciprocating horizontal block 15, and the two guide U rods 18 are connected to the extrusion square plate 19 together; the reciprocating air blocking mechanism also includes an air outlet square groove 20 arranged on both sides of the protective box 2, a filter core plate 21 is installed on the side of the air outlet square groove 20 close to the driving motor 4, and a ventilation square plate 22 is installed on the side of the air outlet square groove 20 away from the driving motor 4, and valves are installed on the ventilation square plate 22 and the extrusion square plate 19; the The protection box 2 is also provided with two gas storage boxes 23, which are symmetrical on both sides of the protection box 2; the gas storage boxes 23 are connected to the gas outlet square groove 20, and the ventilation square plate 22 is located in the gas storage box 23; the extrusion square plate 19 is slidably connected to the gas storage box 23; the top and bottom surfaces of the gas storage box 23 are symmetrically provided with gas storage square holes 24, and the gas storage square holes 24 are connected to the ventilation boxes 25, and the two ventilation boxes 25 on the top surface of the gas storage box 23 are commonly connected to a U-shaped pipe 26, and the U-shaped pipe 26 is also provided with a circulation and scraping unit; a high-pressure nozzle 27 is provided on the side of the U-shaped pipe 26; a gas delivery circular pipe 35 is installed on the side of the ventilation box 25, and the output end of the gas delivery circular pipe 35 passes through the protection box 2 and is located inside it; an intake square pipe 36 is installed on the inner side of the protection box 2, and the square mouth of the intake square pipe 36 expands outward and is arranged on the gas outlet square groove 20;

[0037] When the linkage shaft 12 rotates, it drives the reciprocating disc 13 to rotate, so that the reciprocating round rod 14 on it drives the reciprocating horizontal block 15 to move back and forth on the guide base plate 17 through the guide cylinder 16, thereby driving the extrusion square plate 19 to move back and forth in the gas storage square box 23. When the extrusion square plate 19 moves in a direction away from the protection box 2, the gas inside it enters the gas storage square box 23 through the suction square tube 36, the filter core plate 21, the gas outlet square groove 20 and the valve (in the open state) on the ventilation square plate 22. When the extrusion square plate 19 moves in a direction away from the protection box 2, the gas inside it enters the gas storage square box 23 through the suction square tube 36, the filter core plate 21, the gas outlet square groove 20 and the valve (in the open state) on the ventilation square plate 22. When the air moves toward the protection box 2, the valve on the ventilation square plate 22 is closed, and the gas in the gas storage box 23 enters the ventilation box 25 through the gas storage square hole 24, and is then discharged by the U-shaped pipe 26 and the high-pressure nozzle 27. The gas is filtered by the filter core plate 21 and is a non-polluting gas, which avoids pollution to the external environment and improves the environmental protection effect of the device, so that the inside of the protection box 2 gradually becomes a vacuum state, and cooperates with the provided sprinkler 3 to enter. The fire extinguishing effect of the device after coal combustion is further improved. At the same time, the protection box 2 is made of transparent material, which is helpful for the operator to observe the specific situation of the test and improves the use effect of the device. At the same time, when the extracted gas enters the ventilation box 25, the valve on the gas delivery pipe 35 can be operated (not shown in the figure) so that the gas can enter the gas delivery pipe 35 according to the actual use situation, and the middle end of the gas delivery pipe 35 can be provided with a gas tank (with carbon dioxide inside and a pressure sensor on the surface, both of which are not shown in the figure). By detecting the pressure of the gas output to the gas delivery pipe 35, the carbon dioxide in the gas tank is transported to the protection box 2 through the second half of the gas delivery pipe 35. Since carbon dioxide is an inert gas, it does not support combustion and will not participate in the combustion reaction. Injecting carbon dioxide into the box can dilute the oxygen concentration in the box and reduce the oxygen concentration below the critical value required for coal combustion, thereby preventing combustion, thereby improving the fire extinguishing performance of the device for coal combustion, and the amount of release is set quantitatively to avoid poisoning of personnel and improve the use effect of the device.

[0038] The circulating scraping unit of this embodiment includes a driving shaft 31, and a plurality of fan blades 32 are installed at the middle position of the driving shaft 31. The gas ejected from the output end of the high-pressure nozzle 27 acts on the plurality of fan blades 32 to rotate the driving shaft 31; the driving shaft 31 is symmetrically provided with a driving base 33, and the driving base 33 is arranged on the gas storage box 23; the two ends of the driving shaft 31 are also provided with a compound cam 34; the circulating scraping unit also includes a displacement cylinder 39, and the displacement cylinder 39 is located on the rotation path of the compound cam 34; the displacement cylinder 39 is provided with a positioning slide The positioning column 40 is provided with a positioning base plate 41 which slides on the positioning column 40 and is arranged on the gas storage box 23; a displacement spring 42 is sleeved on the displacement cylinder 39, one end of the displacement spring 42 is connected to the positioning base plate 41, and the other end is connected to a displacement limit plate 43, which is arranged at the end of the positioning column 40 away from the displacement column 39; an extended square rod 48 is installed on the displacement limit plate 43, and the extended square rod 48 passes through the protection box 2 and the suction square tube 36 and is connected to a scraper 49, which is located in the suction square tube 36 and contacts the surface of the filter core plate 21;

[0039] When the gas is discharged through the high-pressure nozzle 27, it will act on a number of fan blades 32, converting wind energy into kinetic energy, thereby driving the driving shaft 31 to rotate, so that the reciprocating cams 34 at both ends of the driving shaft 31 rotate, so that the driving shaft 31 continuously contacts the displacement cylinder 39, so that the displacement cylinder 31 continuously moves back and forth on the positioning base plate 41 through the positioning slide column 40, so that the displacement spring 42 is continuously in a buffering and resetting state, and then the scraper 49 is driven to move back and forth in the suction square tube 36 through the extended square rod 48. When the reciprocating air blocking mechanism draws out the gas inside the protective box 2, the coal inside it will produce fragments when it burns. Crumbs and residues will adhere to the filter core plate 21 under the action of suction. At this time, the scraper 49 can be reciprocated to clean the impurities adhered to the filter core plate 21 to avoid clogging it and reducing the exhaust effect, thereby improving the use effect of the forward-moving air blocking mechanism; at the same time, the fallen residues will be on the suction square tube 36, which is convenient for the operator to clean it in a centralized manner to avoid splashing everywhere and making it difficult to clean, thereby improving the use effect of the device; at the same time, the suction square tube 36 is expanded outward, which can effectively drain the gas inside the protective box 2, reducing the limitations of the device during use.

[0040] The single-rotation check device of this embodiment includes a plurality of limit inclined grooves 44 arranged on the inner side wall of the linkage gear 11; a plurality of limit sliding grooves 46 are arranged on the outer side wall of the linkage rotating shaft 12, and the number of the limit sliding grooves 46 and the limit inclined grooves 44 is the same; a limit inclined block 45 slides in the limit sliding groove 46, the limit inclined block 45 and the limit inclined groove 44 cooperate, and the limit inclined groove 44 is located on the moving path of the limit inclined block 45; a compression spring 47 is also arranged in the limit sliding groove 46, and one end of the compression spring 47 close to the limit inclined block 45 is connected to the inner bottom surface thereof, and one end of the compression spring 47 away from the limit inclined block 45 is fixedly connected to the inner bottom surface of the limit sliding groove 46;

[0041] For example, when the rotating gear ring 10 rotates clockwise, the meshing linkage gear 11 rotates, so that the inclined surfaces of the plurality of limiting inclined grooves 44 on the linkage gear 11 continuously contact the inclined surfaces of the plurality of limiting inclined blocks 45 on the linkage shaft 12, so that it is limited in the limiting slide groove 46 and reciprocates, so that the plurality of extrusion springs 47 are continuously in a buffering and resetting state, so that the linkage shaft 12 is in a non-rotating state, which means that the forward air blocking mechanism and the circulating scraping unit cannot work, so that the coal at the combustion cylinder 30 in the protection box 2 can be fully burned and used to observe the combustion state. When the rotating gear ring 10 rotates counterclockwise, its The meshing linkage gear 11 rotates, causing the right-angled surface of the limiting inclined groove 44 on it to contact the right-angled surface on the limiting inclined block 45, thereby pressing against the limiting inclined block 45, preventing it from moving in the limiting slide groove 46, and making the extrusion spring 47 unable to be in a buffer state, thereby driving the linkage shaft 12 to rotate, so that they all drive the forward air blocking mechanism and the circulating scraping unit to work, and are used to extinguish the coal burning in the combustion tube 30, so that the device only needs one driving source when working, which reduces the limitations of the device during use and avoids wasting resources, thereby reducing the test cost of the device and improving the use effect of the device.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal combustion fire extinguishing condition test device, comprising a test bench (1) and a protection box (2), wherein the protection box (2) is mounted on the top surface of the test bench (1), and a water sprinkler (3) is mounted on the inner top surface of the protection box (2); the characteristics are: A driving motor (4) is provided on the bottom surface of the test bench (1), a driving pulley (5) is mounted on the output end of the driving motor (4), and a position and rotation direction adjustment component is provided on the driving pulley (5); The position rotation direction adjustment component comprises a transmission belt (6), one end of the transmission belt (6) is connected to a driving pulley (5), and the other end is connected to a rotating pulley (7), a rotating shaft (8) is mounted on the rotating pulley (7), the rotating shaft (8) passes through the test bench (1) and is connected to a rotating gear (9), the rotating gear (9) is meshedly connected to a rotating gear ring (10), the rotating gear ring (10) is also meshed with two linkage gears (11), a linkage rotating shaft (12) is mounted on the linkage gear (11), the linkage rotating shaft (12) passes through the test bench (1) and is connected to a reciprocating disc (13), and a reciprocating air blocking mechanism is arranged on the reciprocating disc (13); the reciprocating disc (13) is located on the bottom surface of the test bench (1); the rotating gear ring (10) is located in the protective box (2); the two linkage gears (11) are symmetrically arranged; the linkage gear (11) is also provided with a single-rotation check valve for connecting the linkage rotating shaft (12); The reciprocating air blocking mechanism comprises a reciprocating round rod (14) arranged on a reciprocating disc (13), a reciprocating cross block (15) sliding on the reciprocating round rod (14), two guide cylinders (16) being arranged on the side of the reciprocating cross block (15) away from the driving motor (4), the two guide cylinders (16) being symmetrically arranged along the transverse center axis of the reciprocating cross block (15); a guide base plate (17) sliding on the guide cylinder (16), the guide base plate (17) being fixed on the test bench (1); a guide U rod (18) being installed on the ends of the two guide cylinders (16) away from the reciprocating cross block (15), the two guide U rods (18) being connected to the extrusion square plate (19); The forward air blocking mechanism further comprises air outlet square grooves (20) arranged on both sides of the protection box (2); a filter core plate (21) is installed on the side of the air outlet square groove (20) close to the drive motor (4); a ventilation square plate (22) is installed on the side of the air outlet square groove (20) away from the drive motor (4); valves are installed on the ventilation square plate (22) and the extrusion square plate (19); the protection box (2) is also provided with two air storage boxes (23); the two air storage boxes (23) are symmetrical to the two sides of the protection box (2); the air storage boxes (23) and the air outlet square grooves are connected to each other. (20) is connected, and the ventilation square plate (22) is located in the gas storage square box (23); the extrusion square plate (19) is slidably connected to the gas storage square box (23); the gas storage square holes (24) are symmetrically provided on the top and bottom surfaces of the gas storage square box (23), and the gas storage square holes (24) are connected to the ventilation boxes (25); the two ventilation boxes (25) on the top surface of the gas storage square box (23) are commonly connected to a U-shaped pipe (26), and the U-shaped pipe (26) is also provided with a circulation and scraping unit; a high-pressure nozzle (27) is provided on the side of the U-shaped pipe (26); A plurality of rotating blocks (28) are mounted on the inner side wall of the rotating gear ring (10); the plurality of rotating blocks (28) are slidably connected to a rotating ring (29); the rotating ring (29) is fixed to the top surface of the test bench (1) and has a height difference with the top surface of the test bench (1); a combustion cylinder (30) is also mounted on the top surface of the test bench (1); the combustion cylinder (30) and the rotating ring (29) are coaxial in center, and the diameter of the combustion cylinder (30) is smaller than that of the rotating ring (29); The cyclic re-scraping unit comprises a driving shaft (31), a plurality of fan blades (32) are mounted at the middle end of the driving shaft (31), and gas ejected from the output end of the high-pressure nozzle (27) acts on the plurality of fan blades (32) to rotate the driving shaft (31); a driving base (33) is symmetrically arranged on the driving shaft (31), and the driving base (33) is arranged on the gas storage box (23); and re-actuating cams (34) are also mounted at both ends of the driving shaft (31); The cyclic scraping unit further comprises a displacement cylinder (39), the displacement cylinder (39) being located on the rotation path of the reciprocating cam (34); a positioning slide column (40) being mounted on the displacement cylinder (39), a positioning base plate (41) sliding on the positioning slide column (40), the positioning base plate (41) being arranged on the gas storage box (23); a displacement spring (42) being sleeved on the displacement cylinder (39), one end of the displacement spring (42) being connected to the positioning base plate (41), and the other end being connected to a displacement limit plate (43), the displacement limit plate (43) being arranged at one end of the positioning slide column (40) away from the displacement cylinder (39); The single-rotation check device comprises a plurality of limit inclined grooves (44) arranged on the inner side wall of the linkage gear (11); a plurality of limit sliding grooves (46) are arranged on the outer side wall of the linkage rotating shaft (12), and the number of the limit sliding grooves (46) and the number of the limit inclined grooves (44) are the same; a limit inclined block (45) is slidable in the limit sliding groove (46), the limit inclined block (45) and the limit inclined groove (44) cooperate with each other, and the limit inclined groove (44) is located on the moving path of the limit inclined block (45); and a pressing spring (47) is further arranged in the limit sliding groove (46), one end of the pressing spring (47) close to the limit inclined block (45) is connected to the inner bottom surface thereof, and one end of the pressing spring (47) away from the limit inclined block (45) is fixedly connected to the inner bottom surface of the limit sliding groove (46).

2. A coal combustion and fire extinguishing condition test device according to claim 1, characterized in that: A gas delivery circular pipe (35) is installed on the side of the ventilation box (25), and the output end of the gas delivery circular pipe (35) passes through the protection box (2) and is located inside the protection box (2); an intake square pipe (36) is installed on the inner side of the protection box (2), and the square mouth of the intake square pipe (36) expands outwards and is arranged on the gas outlet square groove (20).

3. A coal combustion and fire extinguishing working condition test device according to claim 1, characterized in that: The top surfaces of the plurality of rotating blocks (28) are commonly connected to a fixed circular ring (37), the diameter of the fixed circular ring (37) being larger than the combustion tube (30); and a plurality of flamethrowers (38) are mounted on the fixed circular ring (37), and the plurality of flamethrowers (38) are all facing the combustion tube (30).

4. A coal combustion and fire extinguishing condition test device according to claim 1, characterized in that: An extended square rod (48) is mounted on the displacement limiting plate (43); the extended square rod (48) passes through the protection box (2) and the suction square tube (36) and is connected to a scraper (49); the scraper (49) is located in the suction square tube (36) and is in contact with the surface of the filter core plate (21).

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