Fireproof detection device for engineering plastic production

Abstract

The invention discloses a fire resistance detection device for engineering plastic production, the fire resistance detection device comprises an operation table, a mounting arm and a heat conduction cover, in the use process of the fire resistance detection device, high-heat gas of the inner wall of a coating sleeve can conduct heat to a collection bin area through the pipe wall of the coating sleeve again through heat conduction, so that the whole collection bin is kept in a heating state; when the collecting bin is in a high-temperature state, plastic liquid falling onto the inner wall of the collecting bin cannot be solidified and can smoothly flow into the material storage tank through the collecting bin, the collecting effect of the engineering plastic plate comburent is further improved, a scraper is attached to the inner wall of the collecting bin, and then an arc-shaped sliding rail is controlled for driving; the moving end of the arc-shaped sliding rail drives the sliding block and the pressing block to annularly move, at the moment, the scraper annularly scrapes along the inner wall of the collecting bin along with the sliding block, residual comburent on the inner wall of the collecting bin due to cooling is scraped and falls into the storage tank, and therefore the collecting efficiency of the comburent of the engineering plastic plate is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of labels, and specifically to a refractory detection device for engineering plastic production. Background Art

[0002] Engineering plastics can be used as engineering materials and replace metals in manufacturing machine parts, etc. At the same time, engineering plastics have excellent comprehensive properties, such as high rigidity, low creep, high mechanical strength, good heat resistance, good electrical insulation, and can be used in relatively harsh chemical and physical environments for a long time, and can replace metals as engineering structural materials.

[0003] The fire prevention tests of engineering plastics mainly include vertical burning tests, oxygen index tests, and comprehensive tests. Comprehensive tests generally include combustion tests, flame spread tests, flame penetration tests, etc. In the combustion test, a burner is directly used to spray flames on the engineering plastic plate for combustion. In the oxygen index test, the combustion situation and combustion time of the plate are measured under different mixed concentrations of oxygen and nitrogen, and the oxygen index value of the engineering plastic plate is calculated. The oxygen index refers to the minimum oxygen concentration at which the material just maintains flaming combustion in a mixed gas of O 2 、N 2 expressed as a percentage by volume of the mixed gas, so the higher its oxygen index, the better the flame retardant performance.

[0004] In the fire prevention test of engineering plastics, the vertical burning test is used to evaluate the combustion performance of plastic materials in a vertical state. The test sample is placed in a vertical burner, and then the bottom of the sample is ignited, and the combustion situation of the sample is observed, including combustion time, combustion rate, dripping situation, etc. During the combustion process of the sample, plastic drips are generated from the bottom. The test needs to collect the drips generated by the combustion of the sample, and at the same time, analyze the combustion state of the sample engineering plastic material in combination with the unburned part.

[0005] In the prior art, a refractory detection device for engineering plastic production disclosed in "CN115112470A" includes: an installation platform installed on the top of a first hydraulic cylinder inside a detection housing; an installation plate installed on the top inside the detection housing through a second hydraulic cylinder, and a connecting column is provided at the bottom of the installation plate. The connecting column penetrates through the cover body, and a pressing plate is provided at the bottom of the connecting column. This refractory detection device for engineering plastic production is provided with a connecting column, a first spring, a pressing plate, and a cover body. When performing a heat resistance test on the heating detection table, the cover body covers the entire engineering plastic part under the drive of the second hydraulic cylinder, so that the temperature received by the engineering plastic part is more uniform, improving the accuracy of the detection. When performing a heat resistance test, the second hydraulic cylinder can be further lowered, so that the connecting column passes through the cover body and continues to move, and drives the pressing plate to move down to perform a pressure resistance test on the engineering plastic part, realizing the use situation of the workpiece under a simulated high-temperature environment and improving the detection range.

[0006] However, there are still significant deficiencies in the existing technology, such as: In the above-mentioned device and the existing technology, during the combustion process of the engineering plastic sheet sample, plastic drips are generated from the bottom. When the liquid drips fall into the collection hopper, due to the temperature of the collection hopper being lower than that of the liquid drips, a large amount of heat dissipation occurs in the liquid drips, resulting in the solidification of the liquid drips on the inner wall of the collection hopper. Once the liquid drips solidify, it will increase the difficulty of collecting the combustibles. At the same time, when scraping the solidified liquid drips from the inner wall of the collection hopper, since the solidified liquid drips are closely attached to the inner wall of the collection hopper, there will be residual components of the solidified liquid drips on the inner wall of the collection hopper, resulting in a large error in the combustion state analysis of the engineering plastic material. Summary of the Invention

[0007] The purpose of the present invention is to provide a fire-resistant detection device for engineering plastic production to solve the problems raised in the above background technology.

[0008] To achieve the above purpose, the present invention provides the following technical solution: A fire-resistant detection device for engineering plastic production, including an operation table, a mounting arm, and a heat-conducting cover. An installation plate is installed at the top of the mounting arm, one end of the installation plate is installed on one side of the heat-conducting cover, a mixing gas tank is installed at one end of the mounting arm, the mixing gas tank is installed on one side of the operation table, a burner is installed at one end of the installation plate, a refractory plate is installed on the side of the heat-conducting cover close to the burner, combustion holes are provided on the surface of the refractory plate, and one end of the burner is inserted into the combustion holes. A fixing frame is installed at the bottom of the heat-conducting cover, an operation area is provided on the surface of the operation table, a collection bin is installed in the central area of the operation area, the collection bin penetrates the bottom of the operation area, and a storage tank is provided at the bottom of the operation area; A heat-conducting unit, which is arranged on the top of the heat-conducting cover and is used to collect the heat generated by the burner for the fire-resistant detection of the engineering board; A temperature supply unit, which is arranged on the surface of the collection bin. The heat-conducting unit will conduct heat to input gas with the collected heat and supply the heat gas to the temperature supply unit, so that the temperature supply unit continuously conveys heat to the collection bin, keeping the collected plastic liquid in a liquid state.

[0009] Preferably, the heat-conducting unit includes a heat-conducting pad, a heat-conducting coil pipe is installed on the surface of the heat-conducting pad, heat-insulating plates are installed on both sides of the heat-conducting coil pipe, a heat-insulating cover is installed on the top of the heat-insulating plates, a suction pump is installed at one end of the heat-conducting coil pipe, and a heat-resistant hose is connected and installed at the other end of the heat-conducting coil pipe.

[0010] Preferably, the temperature supply unit includes a covering sleeve which closely covers the surface of the collection bin. One end of the covering sleeve penetrates through the bottom of the operation area. An air inlet pipe is installed at one end of the covering sleeve close to the heat-resistant hose, and an exhaust pipe is installed at the other end of the covering sleeve away from the heat-resistant hose. One end of the air inlet pipe penetrates through one side of the operation area and is communicated with the heat-resistant hose.

[0011] Preferably, a plastic particle scraping unit is arranged in the operation area. The plastic particle scraping unit includes a lifting guide rail, an electric telescopic rod and an arc plate. The lifting guide rail is installed in the operation area away from the collection bin area, the electric telescopic rod is installed on the moving end of the lifting guide rail, and the arc plate is installed on the output end of the electric telescopic rod. Through grooves and installation grooves are arranged on the surface of the arc plate. An arc-shaped slide rail is installed in the through groove, a slider is installed on the moving end of the arc-shaped slide rail surface, a scraper is arranged at the bottom of the slider, a pressing block is slidably arranged in the installation groove, and the pressing block is fixed to one side of the slider.

[0012] Preferably, a jet unit is arranged at the bottom of the installation groove. The jet unit includes a telescopic air bag which is installed at both ends inside the installation groove. The pressing block is in movable contact with the two telescopic air bags. A spray pipe is arranged at the bottom of the arc plate, and one end of the spray pipe passes through the bottom of the arc plate and is communicated with the telescopic air bag.

[0013] Preferably, fireproof curtains are arranged on both sides of the heat-conducting cover, and fireproof curtains are also installed on the side of the heat-conducting cover opposite to the refractory plate. A smoke exhaust hole is installed at the top of the heat-conducting cover, a smoke exhaust pipe is arranged at the top of the smoke exhaust hole, and a combustion product collection unit is arranged at the top of the smoke exhaust pipe.

[0014] Preferably, the combustion product collection unit includes a collection box, a heat insulation block, a shunt box and a filter cover. The top end of the smoke exhaust pipe is hermetically inserted into the collection box. A collection groove is arranged in the collection box. The heat insulation block is installed at the opening areas at both ends of the collection groove. The shunt box is installed on the inner wall of the collection groove. The top of the shunt box is open. The filter cover is installed on the top of the shunt box. An air inlet groove is arranged at the bottom of the shunt box. The top end of the smoke exhaust pipe is communicated with the air inlet groove, and an air suction fan is installed in the air inlet groove.

[0015] Preferably, the bottom of the shunt box is in a W shape, discharge holes are arranged on both sides of the bottom of the shunt box, a discharge groove is arranged in a penetrating manner in the inner bottom of the collection groove close to the discharge hole area, and a storage box is magnetically installed outside the discharge groove.

[0016] Preferably, a filter screen plate is embedded and installed through the surface of the filter cover. Grooves are formed in the areas on both sides of the filter screen plate on the surface of the filter cover. Electromagnetic slide rails are installed in the grooves. A reciprocating block is installed on the moving end of the electromagnetic slide rail. A rotating shaft is rotatably installed between the two reciprocating blocks. A driven gear is installed at one end of the rotating shaft. A toothed plate is arranged on the surface of the filter cover near the driven gear. The driven gear meshes with the toothed plate. A collision unit is arranged on the surface of the rotating shaft.

[0017] Preferably, the collision unit includes a sleeve roller sleeved on the surface of the rotating shaft. Receiving grooves are symmetrically formed on the surface of the sleeve roller. A memory elastic sheet is installed inside the receiving groove. A collision block is installed on the protruding area of the memory elastic sheet. The collision block is movably attached to the inner wall of the receiving groove. One end of the collision block is in movable contact with the surface of the filter screen plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. During the test, first, the engineering plastic sheet to be tested is positioned and installed through the fixing frame. After the engineering plastic sheet is installed in place, the fireproof curtains around the heat conduction cover are lowered in sequence to form a fireproof zone. At the same time, when the burner sprays fire to burn the engineering plastic sheet, the combustion temperature of the flame does not dissipate too much to the outside. The burner sprays flame towards one side of the engineering plastic sheet for combustion. The heat gas generated by the combustion continuously surges to the heat conduction cover. The heat conduction pad on the top of the heat conduction cover fully absorbs the heat conducted by the heat conduction cover, improving the heat utilization rate. 2. When the engineering plastic sheet is in a burning state, the engineering plastic sheet will be bent when it is sprayed by the flame. At this time, the burning position at the bottom of the engineering plastic sheet will drip liquid downward due to combustion. Part of the dripping liquid will directly pass through the collection bin and enter the storage tank. Another part of the dripping liquid will fall into the inner wall of the collection bin due to the bending of the plastic sheet and flow downward along the smooth inner wall of the collection bin. Since the diameter of the collection bin is larger than that of the storage tank, the collection bin can collect the dripping liquid in a larger range, further improving the collection effect of the combustion products of the engineering plastic sheet. 3. The heat conduction pad conducts the absorbed heat to the heat conduction coil pipe on the top of the heat conduction pad. The heat conduction coil pipe inhales external gas through an air suction pump, and at the same time conducts the absorbed heat to this part of the gas, and transports the gas heated by heat conduction to the heat-resistant hose, and transports it to the area of the coating sleeve through the heat-resistant hose. The coating sleeve is tightly sleeved on the outer surface of the collection bin. The high-temperature gas on the inner wall of the coating sleeve will conduct the heat to the collection bin area through the tube wall of the coating sleeve again through heat conduction. This makes the whole collection bin keep in a heated state. When the collection bin is in a high-temperature state, the plastic liquid falling on the inner wall of the collection bin cannot solidify and will smoothly flow into the storage tank through the collection bin, further improving the collection effect of the combustion products of the engineering plastic sheet. 4. After combustion is completed, the collection bin will rapidly cool down after losing heat conduction. To avoid excessive adhesion of plastic liquid at this time, the electric telescopic rod can be driven to make the arc-shaped plate approach the collection bin. When the arc-shaped plate is at the top of the collection bin, the lifting guide rail is driven to insert the scraper at the bottom of the arc-shaped plate into the collection bin and make the scraper fit on the inner wall of the collection bin. Subsequently, the arc-shaped slide rail is controlled to drive, and the moving end of the arc-shaped slide rail drives the slider and the pressing block to move in a circular motion. At this time, the scraper follows the slider and scrapes in a circular motion along the inner wall of the collection bin, so that the combustion residues remaining on the inner wall of the collection bin due to cooling are scraped off and fall into the storage tank, thereby further improving the collection efficiency of the combustion products of engineering plastic sheets; 5. When the pressing block moves in a circular motion, when the pressing block moves to both ends of the installation groove, it will come into contact with the telescopic airbag and fit. As the circular motion continues, the pressing block will squeeze the telescopic airbag, causing the telescopic airbag to jet air to the outside through the nozzle. This part of the gas will blow towards the inner wall of the collection bin, so that during the scraping process of the scraper, the scraped combustion product debris will quickly fall from the inner wall of the collection bin, thereby improving the scraping effect of the combustion product debris. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall device of the present invention; Figure 2 It is a schematic diagram of the covered sleeve part in the present invention; Figure 3 It is a schematic diagram of the exhaust pipe part in the present invention; Figure 4 It is a schematic diagram of the heat-conducting cover part in the present invention; Figure 5 It is a schematic diagram of the smoke exhaust hole part in the present invention; Figure 6 It is a schematic diagram of the heat-conducting coil part in the present invention; Figure 7 It is a schematic diagram of the lifting guide rail part in the present invention; Figure 8 It is an exploded view of the collection box part in the present invention; Figure 9 It is a schematic diagram of the filter screen plate part in the present invention; Figure 10 It is a cross-sectional view of the flow distribution box and the filter cover in the present invention; Figure 11 It is a cross-sectional view of the sleeve roller and the collision block part in the present invention; Figure 12 It is a schematic diagram of the through groove and the installation groove part in the present invention; Figure 13 It is a schematic diagram of the slider, the pressing block and the scraper part in the present invention.

[0020] In the figure: 1. Operating platform; 11. Operating area; 12. Collection bin; 15. Storage tank; 16. Coating sleeve; 161. Air inlet pipe; 162. Exhaust pipe; 2. Installation arm; 21. Installation plate; 22. Gas mixing tank; 24. Burner; 3. Heat conduction cover; 31. Refractory plate; 311. Combustion holes; 32. Fireproof curtain; 33. Fixed frame; 35. Heat conduction pad; 36. Smoke exhaust holes; 37. Smoke exhaust pipe; 4. Heat insulation cover; 41. Heat conduction coil pipe; 42. Suction pump; 43. Heat insulation plate; 44. Heat resistant hose; 5. Collection box; 51. Collection tank; 511. Discharge chute; 512. Storage box; 52. Heat insulation block; 53. Diverting box; 531. Discharge holes; 532. Air inlet groove; 533. Suction fan; 54. Filter cover; 541. Filter mesh plate; 542. Groove; 543. Electromagnetic slide rail; 544. Toothed plate; 55. Reciprocating block; 551. Rotating shaft; 552. Driven gear; 56. Sleeve roller; 561. Storage groove; 562. Memory elastic sheet; 57. Collision block; 7. Lifting guide rail; 71. Electric telescopic rod; 73. Arc-shaped plate; 74. Through groove; 741. Arc-shaped slide rail; 75. Installation groove; 751. Telescopic airbag; 752. Spray pipe; 76. Slide block; 761. Pressing block; 762. Scraper. Detailed implementation manners

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-13 , the present invention provides a technical solution: Embodiment 1: A refractory detection device for engineering plastic production: including an operating platform 1, an installation arm 2 and a heat conduction cover 3. An installation plate 21 is installed at the top end of the installation arm 2. One end of the installation plate 21 is installed on one side of the heat conduction cover 3. One end of the installation arm 2 is installed with a gas mixing tank 22. The gas mixing tank 22 is installed on one side of the operating platform 1. One end of the installation plate 21 is installed with a burner 24. A refractory plate 31 is installed on the side of the heat conduction cover 3 close to the burner 24. Combustion holes 311 are formed on the surface of the refractory plate 31. One end of the burner 24 is inserted into the combustion holes 311. A fixed frame 33 is installed at the bottom of the heat conduction cover 3. An operating area 11 is arranged on the surface of the operating platform 1. A collection bin 12 is installed in the central area of the operating area 11. The collection bin 12 penetrates through the bottom of the operating area 11. A storage tank 15 is arranged at the bottom of the operating area 11; In this embodiment, the gas transmission end of the gas mixing tank 22 faces the area of the burner 24. The gas mixing tank 22 can input O 2 , N 2The mixed gas, and the refractory plate 31 is arranged in an arc shape; During the test, first, the engineering plastic sheet to be tested is positioned and installed through the fixing frame 33. After the engineering plastic sheet is installed in place, the fireproof curtains 32 around the heat conduction cover 3 are sequentially lowered to form a fireproof zone. At the same time, when the burner 24 sprays fire to burn the engineering plastic sheet, the flame combustion temperature is not excessively dissipated to the outside. The burner 24 sprays flame towards one side of the engineering plastic sheet for combustion, and the heat gas generated by the combustion continuously surges up to the heat conduction cover 3. The heat conduction pad 35 on the top of the heat conduction cover 3 fully absorbs the heat conducted by the heat conduction cover 3, improving the heat utilization rate; Fireproof curtains 32 are arranged on both sides of the heat conduction cover 3, and fireproof curtains 32 are also installed on the side of the heat conduction cover 3 opposite to the refractory plate 31. A smoke exhaust hole 36 is installed at the top of the heat conduction cover 3, a smoke exhaust pipe 37 is arranged at the top of the smoke exhaust hole 36, and a combustion product collection unit is arranged at the top of the smoke exhaust pipe 37; In this embodiment, the fireproof curtains 32 are arranged in three groups. The three groups of fireproof curtains 32 are installed on the heat conduction cover 3 and are not connected to each other, which enables the three groups of fireproof curtains 32 to be lifted separately. Combustion products will generate combustion gas during combustion. The combustion gas contains a large amount of organic matter and needs to be filtered before being discharged to the outside. The combustion gas is inhaled into the smoke exhaust hole 36 through the suction fan 533 and is input into the shunt box 53 through the smoke exhaust pipe 37. The fireproof curtains 32 around the heat conduction cover 3 are sequentially lowered to form a fireproof zone, and at the same time, the flame combustion temperature is not excessively dissipated to the outside.

[0023] The combustion product collection unit includes a collection box 5, a heat insulation block 52, a shunt box 53, and a filter cover 54. The top end of the smoke exhaust pipe 37 is hermetically inserted into the interior of the collection box 5. A collection groove 51 is arranged in the collection box 5. The heat insulation block 52 is installed in the open areas at both ends of the collection groove 51. The shunt box 53 is installed on the inner wall of the collection groove 51. The top of the shunt box 53 is open. The filter cover 54 is installed on the top of the shunt box 53. An air inlet groove 532 is arranged at the bottom of the shunt box 53. The top end of the smoke exhaust pipe 37 is communicated with the air inlet groove 532, and a suction fan 533 is installed in the air inlet groove 532.

[0024] The bottom of the shunt box 53 is arranged in a W shape. Discharge holes 531 are arranged on both sides of the bottom of the shunt box 53. A discharge groove 511 is penetrated and arranged in the inner bottom of the collection groove 51 near the discharge holes 531. An accommodation box 512 is magnetically installed outside the discharge groove 511: In this embodiment, the shunt box 53 is arranged in a W shape, which means that there are two low points at the bottom of the W-shaped shunt box 53. The discharge holes 531 are opened at these two low points. When combustible particles filtered by the filter mesh plate 541 fall on the inner bottom surface of the shunt box 53, these particulate impurities will slide along the inner bottom surface of the shunt box 53 towards the low points and be discharged from the discharge holes 531 at the low points into the top of the discharge chute 511. The particulate impurities fall into the storage box 512 through the discharge chute 511. After the fire resistance test is completed, the operator can remove the storage box 512 and judge whether the combustion state of the engineering plastic sheet is sufficient and whether the engineering plastic meets the combustion state standards of different concentrations of O2 and N2 mixed gases by comparing the weight change of the filter mesh plate 541 after the fire resistance test and weighing the combustibles in the storage box 512 and the storage tank 15.

[0025] The filter cover 54 is embedded with a filter mesh plate 541 through its surface. Grooves 542 are formed in the areas on both sides of the filter mesh plate 541 on the surface of the filter cover 54. Electromagnetic slide rails 543 are installed in the grooves 542. A reciprocating block 55 is installed on the moving end of the electromagnetic slide rail 543. A rotating shaft 551 is rotatably installed between the two reciprocating blocks 55. A driven gear 552 is installed at one end of the rotating shaft 551. A toothed plate 544 is arranged on the surface of the filter cover 54 near the driven gear 552. The driven gear 552 meshes with the toothed plate 544. A collision unit is arranged on the surface of the rotating shaft 551.

[0026] The collision unit includes a sleeve roller 56 sleeved on the surface of the rotating shaft 551. Receiving grooves 561 are symmetrically formed on the surface of the sleeve roller 56. A memory elastic sheet 562 is installed inside the receiving groove 561. A collision block 57 is installed on the protruding area of the memory elastic sheet 562. The collision block 57 is movably attached to the inner wall of the receiving groove 561. One end of the collision block 57 is in movable contact with the surface of the filter mesh plate 541. In this embodiment, when combustion starts, the electromagnetic slide rail 543 is driven. The moving end of the electromagnetic slide rail 543 drives the reciprocating block 55 to slide back and forth in the groove 542. When the reciprocating block 55 moves, it will drive the rotating shaft 551 and a part of the sleeve roller 56 to move along the groove 542 area. When the rotating shaft 551 moves, the driven gear 552 on the rotating shaft 551 rotates continuously due to continuous contact with the toothed plate 544, causing the driven gear 552 to rotate. When the driven gear 552 rotates, it will drive the rotating shaft 551 to rotate. When the rotating shaft 551 rotates, it drives the sleeve roller 56 to rotate. When the sleeve roller 56 rotates, the collision blocks 57 on the sleeve roller 56 will be thrown outwards under the action of centrifugal force. When the collision blocks 57 collide with the filter screen plate 541, it will cause the filter screen plate 541 to vibrate. At the same time, as the collision blocks 57 continue to contact the filter screen plate 541 and the sleeve roller 56 continues to rotate, the collision blocks 57 will be squeezed back into the storage groove 561 by the filter screen plate 541. At this time, the memory elastic piece 562 is squeezed by the collision blocks 57 and fits against the inner wall of the storage groove 561. When the collision blocks 57 are separated from the filter screen plate 541, the memory elastic piece 562 rebounds again to push the collision blocks 57 out of the storage groove 561. This cycle completes the impact vibration on the surface of the filter screen plate 541, so that the combustion particles attached to the bottom of the filter screen plate 541 fall off and are collected by the storage box 512.

[0027] The heat conduction unit is arranged on the top of the heat conduction cover 3 and is used to collect the heat generated by the burner 24 for the fire resistance test of the engineering board. The heat conduction unit includes a heat conduction pad 35. A heat conduction coil 41 is installed on the surface of the heat conduction pad 35. Heat insulation plates 43 are installed on both sides of the heat conduction coil 41. A heat insulation cover 4 is installed on the top of the heat insulation plates 43. An air suction pump 42 is installed at one end of the heat conduction coil 41. A heat-resistant hose 44 is connected and installed at the other end of the heat conduction coil 41. In this embodiment, when the engineering plastic board is in a combustion state, the engineering plastic board will be bent when it is burned by the flame. At this time, the liquid will drip downward at the bottom combustion position of the engineering plastic board. Part of the dripping liquid will directly pass through the collection bin 12 and enter the storage tank 15. Another part of the dripping liquid will fall on the inner wall of the collection bin 12 due to the bending of the plastic board and flow downward along the smooth inner wall of the collection bin 12. At the same time, since the diameter of the collection bin 12 is larger than that of the storage tank, the collection bin 12 can collect the dripping liquid in a larger range, further improving the collection effect of the combustion products of the engineering plastic board. The temperature supply unit is arranged on the surface of the collection bin 12. The heat conduction unit will conduct and input the collected heat into the gas and supply the heated gas to the temperature supply unit, so that the temperature supply unit continuously supplies heat to the collection bin 12 to keep the collected plastic liquid in a liquid state.

[0028] The temperature supply unit includes a covering sleeve 16. The covering sleeve 16 is tightly covered on the surface of the collection bin 12. One end of the covering sleeve 16 penetrates the bottom of the operation area 11. An air inlet pipe 161 is installed at one end of the covering sleeve 16 close to the heat-resistant hose 44. An exhaust pipe 162 is installed at the other end of the covering sleeve 16 away from the heat-resistant hose 44. One end of the air inlet pipe 161 penetrates one side of the operation area 11 and is communicated with the heat-resistant hose 44. In this embodiment, the heat-conducting pad 35 conducts the absorbed heat to the heat-conducting coil pipe 41 at the top of the heat-conducting pad 35. The heat-conducting coil pipe 41 sucks in external gas through the air suction pump 42, conducts the absorbed heat to this part of the gas at the same time, and conveys the gas heated by heat conduction to the heat-resistant hose 44, and conveys it to the area of the covering sleeve 16 through the heat-resistant hose 44. The covering sleeve 16 is tightly sleeved on the outer surface of the collection bin 12. The high-temperature gas on the inner wall of the covering sleeve 16 will conduct the heat to the area of the collection bin 12 again through the wall of the covering sleeve 16 by heat conduction. This makes the whole collection bin 12 maintain a high-temperature state. When the collection bin 12 is in a high-temperature state, the plastic liquid falling on the inner wall of the collection bin 12 cannot solidify and will smoothly flow into the storage tank 15 through the collection bin 12, further improving the collection effect of the combustion products of the engineering plastic plate. Embodiment

[0029] Based on Embodiment 1, this embodiment takes into account that after the combustion is completed, at this time, the collection bin 12 will quickly cool down after losing heat conduction. If there is still plastic liquid that has not completely flowed down on the surface of the collection bin 12, the plastic liquid will cool and solidify due to the cooling of the collection bin 12 and thus cannot fall into the storage tank 15. If the total amount of plastic particles that cannot be counted into the storage tank 15 is too large, it will cause too much loss of the total amount of plastic combustion products, resulting in a large error in judging the combustion state of the engineering plastic in the O 2 、N 2 mixed gas.

[0030] A plastic particle scraping unit is arranged in the operation area 11. The plastic particle scraping unit includes a lifting guide rail 7, an electric telescopic rod 71 and an arc plate 73. The lifting guide rail 7 is installed inside the operation area 11 away from the collection bin 12 area. The electric telescopic rod 71 is installed on the moving end of the lifting guide rail 7. The arc plate 73 is installed on the output end of the electric telescopic rod 71. Through grooves 74 and installation grooves 75 are arranged on the surface of the arc plate 73. An arc-shaped slide rail 741 is installed in the through groove 74. A slide block 76 is installed on the moving end of the arc-shaped slide rail 741 surface. A scraper 762 is arranged at the bottom of the slide block 76. A pressing block 761 is slidably arranged in the installation groove 75. The pressing block 761 is fixed to one side of the slide block 76; In this embodiment, by driving the electric telescopic rod 71, the arc plate 73 is made to approach the collection bin 12. When the arc plate 73 is located at the top of the collection bin 12, at this time, the lifting guide rail 7 is driven to insert the scraper 762 at the bottom of the arc plate 73 into the collection bin 12 and make the scraper 762 fit on the inner wall of the collection bin 12. Then, the arc-shaped slide rail 741 is controlled to drive, and the moving end of the arc-shaped slide rail 741 drives the slide block 76 and the pressing block 761 to move in a circular motion. At this time, the scraper 762 follows the slide block 76 and scrapes circularly along the inner wall of the collection bin 12, so that the combustion products remaining on the inner wall of the collection bin 12 due to cooling are scraped off and fall into the storage tank 15, thereby further improving the collection efficiency of the combustion products of the engineering plastic plate.

[0031] A jetting unit is provided at the bottom of the installation groove 75. The jetting unit includes a telescopic airbag 751. The telescopic airbag 751 is installed at both ends inside the installation groove 75. The pressing block 761 is in movable contact with the two groups of telescopic airbags 751. A nozzle 752 is provided at the bottom of the arc-shaped plate 73. One end of the nozzle 752 passes through the bottom of the arc-shaped plate 73 and communicates with the telescopic airbag 751. In this embodiment, when the pressing block 761 moves in a circular motion, when the pressing block 761 moves to both ends of the installation groove 75, it will be in close contact with the telescopic airbag 751. As the circular motion continues, the pressing block 761 will squeeze the telescopic airbag 751, causing the telescopic airbag 751 to jet air to the outside through the nozzle 752. This part of the air will blow towards the inner wall of the collection bin 12 and move along the inner wall of the collection bin 12, so that during the scraping process of the scraper 762, the burned debris that is scraped off will quickly fall from the inner wall of the collection bin 12, thereby improving the scraping effect of the burned debris.

[0032] Working principle: During the use of this device, during the test, first, the engineering plastic sheet to be tested is positioned and installed through the fixing frame 33. When the engineering plastic sheet is installed in place, the fireproof curtains 32 around the heat conduction cover 3 are lowered in sequence to form a fireproof belt. At the same time, when the burner 24 sprays fire to burn the engineering plastic sheet, the flame combustion temperature will not be excessively dissipated to the outside. The burner 24 sprays flame towards one side of the engineering plastic sheet for combustion. The heat gas generated by the combustion continuously surges to the heat conduction cover 3. The heat conduction pad 35 at the top of the heat conduction cover 3 fully absorbs the heat conducted by the heat conduction cover 3, improving the heat utilization rate. Combustion gas will be generated during the combustion of the combustibles. The combustion gas contains a large amount of organic matter and needs to be filtered before being discharged to the outside. The combustion gas is inhaled into the smoke exhaust hole 36 by the suction fan 533 and is input into the shunt box 53 through the smoke exhaust pipe 37. The fireproof curtains 32 around the heat conduction cover 3 are lowered in sequence to form a fireproof belt. At the same time, the flame combustion temperature will not be excessively dissipated to the outside. After combustion starts, the electromagnetic slide rail 543 is driven. The moving end of the electromagnetic slide rail 543 drives the reciprocating block 55 to slide reciprocally in the groove 542. When the reciprocating block 55 moves, it drives the rotating shaft 551 and part of the sleeve roller 56 to move along the groove 542 area. When the rotating shaft 551 moves, the driven gear 552 on the rotating shaft 551 rotates continuously due to continuous contact with the toothed plate 544, causing the driven gear 552 to rotate. When the driven gear 552 rotates, it drives the rotating shaft 551 to rotate. When the rotating shaft 551 rotates, it drives the sleeve roller 56 to rotate. When the sleeve roller 56 rotates, the collision block 57 on the sleeve roller 56 is thrown outwards under the action of centrifugal force. When the collision block 57 impacts the filter mesh plate 541, it causes the filter mesh plate 541 to vibrate. At the same time, as the collision block 57 continues to contact the filter mesh plate 541 and the sleeve roller 56 continues to rotate, the collision block 57 will be squeezed back into the storage groove 561 by the filter mesh plate 541. At this time, the memory elastic sheet 562 is squeezed by the collision block 57 and adheres to the inner wall of the storage groove 561. When the collision block 57 separates from the filter mesh plate 541, the memory elastic sheet 562 rebounds again to push the collision block 57 out of the storage groove 561, and this cycle is completed to impact and vibrate the surface of the filter mesh plate 541, so that the combustion particles attached to the bottom of the filter mesh plate 541 fall off and are collected by the storage box 512; When the combustion particles filtered by the filter mesh plate 541 fall on the inner bottom surface of the shunt box 53, this part of the particulate impurities will slide along the inner bottom surface of the shunt box 53 towards the low point position and be discharged from the discharge hole 531 at the low point position into the top of the discharge chute 511. The particulate impurities fall into the storage box 512 through the discharge chute 511. After the fire resistance test is completed, the operator can remove the storage box 512 and judge whether the combustion state of the engineering plastic sheet is sufficient and whether the engineering plastic meets the combustion state standards of different concentrations of O 2 , N 2 mixed gas by comparing the weight change of the filter mesh plate 541 after the fire resistance test and weighing the combustion substances in the storage box 512 and the storage tank 15. The heat conduction pad 35 conducts the absorbed heat to the heat conduction coil 41 on the top of the heat conduction pad 35. The heat conduction coil 41 sucks in external gas through the air suction pump 42, conducts the absorbed heat to this part of the gas at the same time, and transports the gas heated by heat conduction to the heat resistant hose 44, and transports it to the area of the coating sleeve 16 through the heat resistant hose 44. The coating sleeve 16 is tightly sleeved on the outer surface of the collection bin 12. The high-temperature gas on the inner wall of the coating sleeve 16 will conduct the heat to the area of the collection bin 12 again through the wall of the coating sleeve 16 by heat conduction, which makes the whole collection bin 12 maintain a high temperature state. When the collection bin 12 is in a high temperature state, the plastic liquid falling on the inner wall of the collection bin 12 cannot solidify and will smoothly flow into the storage tank 15 through the collection bin 12, further improving the collection effect of the combustion substances of the engineering plastic sheet; By driving the electric telescopic rod 71, the arc-shaped plate 73 is moved closer to the collection bin 12. When the arc-shaped plate 73 is located at the top of the collection bin 12, the lifting guide rail 7 is driven at this time so that the scraper 762 at the bottom of the arc-shaped plate 73 is inserted into the collection bin 12 and the scraper 762 is attached to the inner wall of the collection bin 12. Subsequently, the arc-shaped slide rail 741 is controlled to drive, and the mobile end of the arc-shaped slide rail 741 drives the slider 76 and the pressing block 761 to move in a circular motion. At this time, the scraper 762 follows the slider 76 and scrapes in a circular motion along the inner wall of the collection bin 12, so that the combustion residues remaining on the inner wall of the collection bin 12 due to cooling are scraped off and fall into the storage tank 15, thereby further improving the collection efficiency of the combustion products of the engineering plastic sheet; When the pressing block 761 moves in a circular motion, when the pressing block 761 moves to both ends of the installation groove 75, it will come into contact with the telescopic airbag 751 in a fitting manner. As the circular motion continues, the pressing block 761 will squeeze the telescopic airbag 751, causing the telescopic airbag 751 to jet air to the outside through the nozzle 752. This part of the gas will blow towards the inner wall of the collection bin 12 and move along the inner wall of the collection bin 12, so that during the scraping process of the scraper 762, the scraped combustion product debris quickly falls from the inner wall of the collection bin 12, thereby improving the scraping effect of the combustion product debris.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire-resistant detection device for engineering plastic production, characterized in that: The invention comprises an operating table (1), a mounting arm (2) and a heat-conducting cover (3), wherein a mounting plate (21) is mounted on the top of the mounting arm (2), one end of the mounting plate (21) is mounted on one side of the heat-conducting cover (3), a gas mixing tank (22) is mounted on one end of the mounting arm (2), the gas mixing tank (22) is mounted on one side of the operating table (1), a burner (24) is mounted on one end of the mounting plate (21), and a fire-resistant plate (24) is mounted on the side of the heat-conducting cover (3) close to the burner (24). 31), a combustion hole (311) is formed on the surface of the fireproof board (31), one end of the burner (24) is inserted into the combustion hole (311), a fixing frame (33) is installed at the bottom of the heat-conducting cover (3), an operating area (11) is provided on the surface of the operating table (1), a collecting bin (12) is installed in the central area of ​​the operating area (11), the collecting bin (12) passes through the bottom of the operating area (11), and a material storage tank (15) is provided at the bottom of the operating area (11); A heat conduction unit, the heat conduction unit being arranged on the top of the heat conduction cover (3) and being used to collect heat generated by the burner (24) in performing fire resistance testing on the engineering board; A heating unit is provided on the surface of the collection bin (12); the heat conduction unit conducts the collected heat into the gas and supplies the hot gas into the heating unit, so that the heating unit continuously delivers heat to the collection bin (12), so that the collected plastic liquid remains in a liquid state.

2. A fire-resistant detection device for engineering plastic production according to claim 1, characterized in that: The heat conduction unit comprises a heat conduction pad (35), a heat conduction coil (41) is installed on the surface of the heat conduction pad (35), heat insulation plates (43) are installed on both sides of the heat conduction coil (41), a heat insulation cover (4) is installed on the top of the heat insulation plate (43), an air suction pump (42) is installed at one end of the heat conduction coil (41), and a heat-resistant hose (44) is installed and connected to the other end of the heat conduction coil (41).

3. A fire-resistant detection device for engineering plastic production according to claim 2, characterized in that: The heating unit comprises a covering sleeve (16), wherein the covering sleeve (16) tightly covers the surface of the collecting bin (12), one end of the covering sleeve (16) passes through the bottom of the operating area (11), an air inlet pipe (161) is installed at one end of the covering sleeve (16) close to the heat-resistant hose (44), an exhaust pipe (162) is installed at one end of the covering sleeve (16) away from the heat-resistant hose (44), and one end of the air inlet pipe (161) passes through one side of the operating area (11) and is connected to the heat-resistant hose (44).

4. The fire-resistant detection device for engineering plastic production according to claim 3, characterized in that: A plastic particle scraping unit is provided in the operating area (11), and the plastic particle scraping unit comprises a lifting guide rail (7), an electric telescopic rod (71) and an arc plate (73). The lifting guide rail (7) is installed in an area inside the operating area (11) away from the collecting bin (12). The electric telescopic rod (71) is installed on the movable end of the lifting guide rail (7). The arc plate (73) is installed on the output end of the electric telescopic rod (71). A through groove (74) and a mounting groove (75) are provided on the surface of the arc plate (73). An arc slide rail (741) is installed in the through groove (74). A slider (76) is installed on the movable end of the surface of the arc slide rail (741). A scraper (762) is provided at the bottom of the slider (76). A pressing block (761) is slidably provided in the mounting groove (75). The pressing block (761) is fixed to one side of the slider (76).

5. A fire-resistant detection device for engineering plastic production according to claim 4, characterized in that: An injection unit is provided at the bottom of the installation groove (75), and the injection unit comprises telescopic airbags (751). The telescopic airbags (751) are installed at both ends inside the installation groove (75), and the pressing block (761) is in active contact with two groups of the telescopic airbags (751). A nozzle (752) is provided at the bottom of the arc plate (73), and one end of the nozzle (752) passes through the bottom of the arc plate (73) and is connected to the telescopic airbags (751).

6. The fire-resistant detection device for engineering plastic production according to claim 1, characterized in that: Fireproof curtains (32) are arranged on both sides of the heat-conducting cover (3), and the fireproof curtain (32) is also installed on the side of the heat-conducting cover (3) opposite to the fire-resistant board (31). A smoke exhaust hole (36) is installed on the top of the heat-conducting cover (3), a smoke exhaust pipe (37) is arranged on the top of the smoke exhaust hole (36), and a combustion product collection unit is arranged on the top of the smoke exhaust pipe (37).

7. A fire-resistant detection device for engineering plastic production according to claim 6, characterized in that: The combustion product collection unit comprises a collection box (5), a heat insulation block (52), a flow diversion box (53) and a filter cover (54); the top end of the smoke exhaust pipe (37) is sealed and inserted into the interior of the collection box (5); a collection tank (51) is provided in the collection box (5); the heat insulation block (52) is mounted at the opening areas at both ends of the collection tank (51); the flow diversion box (53) is mounted on the inner wall of the collection tank (51); the top of the flow diversion box (53) is open; the filter cover (54) is mounted on the top of the flow diversion box (53); an air intake tank (532) is provided at the bottom of the flow diversion box (53); the top end of the smoke exhaust pipe (37) is in communication with the air intake tank (532); and an air intake fan (533) is mounted in the air intake tank (532).

8. The fire-resistant detection device for engineering plastic production according to claim 7, characterized in that: The bottom of the diverter box (53) is configured to be W-shaped, and discharge holes (531) are provided on both sides of the bottom of the diverter box (53). A discharge trough (511) is provided through the bottom of the collecting trough (51) near the discharge holes (531), and a storage box (512) is magnetically mounted on the outside of the discharge trough (511).

9. A fire-resistant detection device for engineering plastic production according to claim 8, characterized in that: A filter screen plate (541) is installed through and embedded in the surface of the filter cover (54); grooves (542) are provided on the surface of the filter cover (54) at the two side regions of the filter screen plate (541); electromagnetic slide rails (543) are installed in the grooves (542); a reciprocating block (55) is installed on the moving end of the electromagnetic slide rail (543); a rotating shaft (551) is rotatably installed between two groups of the reciprocating blocks (55); a driven gear (552) is installed at one end of the rotating shaft (551); a tooth plate (544) is provided on the surface of the filter cover (54) close to the driven gear (552); the driven gear (552) is meshed with the tooth plate (544); and a collision unit is provided on the surface of the rotating shaft (551).

10. A fire-resistant detection device for engineering plastic production according to claim 9, characterized in that: The collision unit comprises a sleeve roller (56), the sleeve roller (56) being sleeved on the surface of the rotating shaft (551), the sleeve roller (56) being symmetrically provided with a receiving groove (561), a memory spring sheet (562) being installed inside the receiving groove (561), a collision block (57) being installed in a protruding area of ​​the memory spring sheet (562), the collision block (57) being movably fitted with an inner wall of the receiving groove (561), and one end of the collision block (57) being movably in contact with the surface of the filter screen plate (541).

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