Waste gas treatment device for heating combustion processing of plastic raw materials

Abstract

The invention provides a device for treating waste gas during heating combustion processing of plastic raw materials, and belongs to the field of waste gas treatment. The device comprises a gas inlet pipeline which is tightly connected to the outer side part of a tower body; the high-pressure water pump is stably mounted on the outer side of the lower end of the tower body; the liquid supply water pipe is fixedly connected with the upper end plane of the high-pressure water pump; the plurality of packing layers are firmly arranged on the inner side of the tower body; the exhaust pipe is fixedly connected with the upper end surface of the tower body; the exhaust fan is mounted at the lower end of the exhaust pipe; and the fixed shell is fixedly connected with the outer side of the exhaust pipe. The device effectively solves the problems existing in the application period of the plastic raw material heating combustion processing waste gas treatment device, namely, a large number of dust particles are easily attached to the inner wall of a pipeline after the gas inlet pipeline of the waste gas treatment device runs for a long time, and the dust particles can cause the pipeline to be blocked as time goes on. Therefore, adverse effects on the waste gas treatment efficiency are generated. According to the invention, the waste gas treatment efficiency is improved, and the labor intensity is correspondingly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to a waste gas treatment device for heating and burning plastic raw materials. Background Art

[0002] During the heating and combustion process of plastic raw materials, many harmful gases will be released. These gases cannot be discharged directly into the atmosphere. Generally speaking, the waste gas generated must be treated and purified with the help of waste gas treatment equipment before it can be discharged into the air.

[0003] However, judging from the actual use of the current waste gas treatment equipment dedicated to the heating and combustion processing of plastic raw materials, when the air intake pipe is used for a long time, a large amount of dust particles will adhere to the wall inside the pipe. As time goes on, this accumulation will cause the pipe to become blocked, which will have a negative impact on the treatment effect of the waste gas and greatly reduce the treatment efficiency. Summary of the invention

[0004] The present invention provides an exhaust gas treatment device for heating and burning plastic raw materials, which specifically comprises: a tower body, an air intake pipe, a high-pressure water pump, a liquid supply water pipe, a packing layer, an exhaust pipe, an exhaust fan, a fixed shell, a cleaning mechanism, a rotary spray mechanism and a standby mechanism; the air intake pipe is fixedly connected to the outside of the tower body; the high-pressure water pump is fixedly installed on the outside of the lower end of the tower body; the liquid supply water pipe is fixedly connected to the upper end face of the high-pressure water pump; a plurality of packing layers are provided, and the plurality of packing layers are fixedly installed on the inner side of the tower body; the exhaust pipe is fixedly connected to the upper end face of the tower body; the exhaust fan is fixedly installed at the lower end of the exhaust pipe; the fixed shell is fixedly connected to the outer side of the exhaust pipe; the cleaning mechanism is arranged on the inner side of the air intake pipe; the rotary spray mechanism is arranged on the inner side of the tower body; and the standby mechanism is arranged on the outer side of the tower body.

[0005] Furthermore, the cleaning mechanism includes: a fixed bracket, an impeller, a first gear, a second gear and a gear ring; the fixed bracket is fixedly connected to the inner side of the upper end of the air intake pipe; the impeller is rotatably connected to the upper end surface of the fixed bracket; the first gear is fixedly connected to the lower end of the impeller; a plurality of second gears are provided, and the plurality of second gears are rotatably connected to the lower end of the fixed bracket, and the plurality of second gears are meshed with the first gear; the gear ring is rotatably connected to the inner side of the upper end of the air intake pipe, and the gear ring is meshed with the plurality of second gears.

[0006] Furthermore, the cleaning mechanism also includes: a cleaning rod and a support ring; the cleaning rod is provided in plurality, and the plurality of cleaning rods are fixedly connected to the lower end surface of the gear ring; the support ring is provided in plurality, and the plurality of support rings are respectively fixedly connected to the inner sides of the plurality of cleaning rods.

[0007] Furthermore, the cleaning mechanism also includes: a collection box; the collection box is threadedly connected to the inner side of the lower end of the air intake pipe.

[0008] Furthermore, the rotary spray mechanism includes: a connecting joint, a spray pipe and a spray head; the connecting joints are provided in plurality, and the plurality of connecting joints are fixedly connected to the upper end of the liquid supply pipe; the spray pipes are provided in plurality of groups, and the plurality of groups of spray pipes are respectively rotatably connected to the inner sides of the plurality of connecting joints; the spray heads are provided in plurality of groups, and the plurality of groups of spray heads are respectively fixedly installed on the outer sides of the plurality of groups of spray pipes.

[0009] Furthermore, the rotary spray mechanism also includes: a diverter pipe, a rotary nozzle and a fixed inclined plate; the diverter pipe is provided with multiple groups, and the multiple groups of diverter pipes are respectively fixedly connected to the upper ends of the multiple groups of spray pipes; the rotary nozzle is provided with multiple groups, and the multiple groups of rotary nozzles are respectively fixedly connected to the outside of the multiple groups of diverter pipes; the fixed inclined plates are provided with multiple groups, and the multiple groups of fixed inclined plates are all fixedly connected to the inner side of the tower body.

[0010] Furthermore, the standby mechanism includes: a standby air inlet pipe, a reflux hole, a standby tank body, a connecting pipe, a standby filling piece, a standby spray water pipe and a standby spray head; the standby air inlet pipe is fixedly connected to the inner side of the tower body; the reflux hole is opened on the outer side of the standby air inlet pipe; the standby tank body is fixedly connected to the upper end face of the standby air inlet pipe; the lower end of the connecting pipe is fixedly connected to the upper end face of the standby tank body, and the upper end of the connecting pipe is fixedly connected to the outer side of the exhaust pipe; a plurality of standby filling pieces are provided, and the plurality of standby filling pieces are all fixedly connected to the inner side of the standby tank body; a plurality of standby spray water pipes are provided, and the plurality of standby spray water pipes are respectively fixedly connected to the outer sides of the liquid supply water pipe; a plurality of standby spray heads are provided, and the plurality of standby spray heads are respectively fixedly connected to the outer sides of the plurality of standby spray water pipes.

[0011] Furthermore, the backup mechanism also includes: a sliding member, a sealing plate and a spring compression member; the sliding member is slidably connected to the inner side of the fixed shell; the sealing plate is hinged to the inner side of the tower body, and the sealing plate is slidably connected to the sliding member; one end of the spring compression member is fixedly connected to the outer side of the sliding member, and the other end of the spring compression member is fixedly connected to the inner side of the fixed shell.

[0012] Furthermore, the backup mechanism also includes: a fastening plate, a pressure touch switch and an alarm; the fastening plate is fixedly connected to the upper end surface of the sliding member; the pressure touch switch is fixedly installed on the upper end surface of the fixed shell; the alarm is fixedly installed on the upper end surface of the fixed shell, and the alarm is electrically connected to the pressure touch switch.

[0013] Beneficial Effects

[0014] The present invention realizes the cleaning of dust on the inner wall of the air intake duct through the setting of the cleaning mechanism. When the exhaust fan is started, the exhaust gas will be drawn into the tower body through the air intake duct. When the exhaust gas enters the air intake duct, the exhaust gas will blow the impeller to rotate. The rotation of the impeller will drive the first gear and the second gear to drive the gear ring to rotate. The rotation of the gear ring will drive the cleaning rod to rotate, and the inner wall of the air intake duct is cleaned. The dust on the inner wall of the air intake duct will fall into the collection box. By disassembling the collection box, the dust in the collection box can be cleaned, thereby ensuring smooth air intake in the air intake duct, improving the exhaust gas treatment efficiency, and eliminating the need for manual cleaning, thereby reducing labor intensity.

[0015] In addition, through the setting of the rotary spray mechanism, the rotary spraying of the spray nozzle is realized. When the high-pressure water pump is started, the high-pressure water pump will draw the spray liquid on the inner side of the lower end of the tower body into the connecting joint. The spray liquid in the connecting joint will flow into the spray pipe and the diversion pipe respectively and then be sprayed out through the spray nozzle and the rotary nozzle. The mist spray liquid sprayed by the spray nozzle will purify the exhaust gas in the tower body, and the columnar spray liquid sprayed by the rotary nozzle will impact the outer side of the fixed inclined plate. At this time, the spray pipe will be pushed to rotate, causing the spray nozzle to perform rotational spraying, thereby increasing the coverage range of the spray nozzle, reducing spray dead angles, and improving purification efficiency.

[0016] In addition, through the setting of the backup mechanism, waste gas treatment is achieved when the packing layer in the tower body is blocked. When the packing layer is blocked after long-term use, the operation of the exhaust fan will cause the air pressure in the exhaust pipe to decrease. At this time, the sliding part will slide inwardly of the exhaust pipe under the influence of the air pressure. The sliding of the exhaust pipe will open the sealing plate under the action of the sliding connection with the sealing plate. At this time, the exhaust gas at the lower end of the tower body will enter the spare tank through the backup air inlet pipe, so that the backup packing part can purify the exhaust gas and prevent the packing layer from being blocked and causing the exhaust fan to overload, thereby extending the service life of the exhaust fan, reducing economic losses and improving the exhaust gas purification efficiency.

[0017] In addition, through the setting of the above-mentioned mechanism, the dust on the inner wall of the air intake duct is cleaned, the air intake of the air intake duct is guaranteed to be unobstructed, the exhaust gas treatment efficiency is improved, and no manual cleaning is required, which reduces labor intensity. The rotary spraying of the spray nozzle is realized, the spraying dead angle is reduced, and the purification efficiency is improved. The exhaust gas treatment is also realized when the packing layer in the tower body is blocked, which extends the service life of the exhaust fan, reduces economic losses, and improves the exhaust gas purification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture:

[0021] Figure 1 It is a schematic structural diagram of the main body of the first embodiment of the present invention.

[0022] Figure 2 It is a schematic structural diagram of a cross-section of an air intake duct according to the first embodiment of the present invention.

[0023] Figure 3 It is a schematic structural diagram of the impeller of the first embodiment of the present invention.

[0024] Figure 4 It is a schematic structural diagram of a tower body section according to the second embodiment of the present invention.

[0025] Figure 5 It is a schematic structural diagram of a connecting joint according to a second embodiment of the present invention.

[0026] Figure 6 The second embodiment of the present invention Figure 4 Schematic diagram of the structure with a partial enlargement at point A in the middle.

[0027] Figure 7 It is a schematic structural diagram of a sealing plate according to the third embodiment of the present invention.

[0028] Figure 8 It is a schematic diagram of the structure of the reflux hole in the third embodiment of the present invention.

[0029] Reference numerals list

[0030] 1. Tower body; 2. Air intake pipe; 3. High-pressure water pump; 4. Liquid supply water pipe; 5. Packing layer; 6. Exhaust pipe; 7. Exhaust fan; 8. Fixed shell; 9. Fixed bracket; 10. Impeller; 11. First gear; 12. Second gear; 13. Gear ring; 14. Cleaning rod; 15. Support ring; 16. Collection box; 17. Connecting joint; 18. Spray pipe; 19. Spray nozzle; 20. Diverter pipe; 21. Rotating nozzle; 22. Fixed inclined plate; 23. Spare air intake pipe; 2301, reflux hole; 24. Spare tank body; 25. Connecting pipe; 26. Spare packing; 27. Spare spray water pipe; 28. Spare spray head; 29. ​​Sliding part; 30. Sealing plate; 31. Spring compression member; 32. Fastening plate; 33. Touch switch; 34. Alarm. DETAILED DESCRIPTION

[0031] Embodiment 1:

[0032] Please refer to Figure 1-Figure 3 As shown:

[0033] The present invention provides an exhaust gas treatment device for heating and burning plastic raw materials, comprising a tower body 1, an air intake pipe 2, a high-pressure water pump 3, a liquid supply water pipe 4, a packing layer 5, an exhaust pipe 6, an exhaust fan 7, a fixed shell 8 and a cleaning mechanism; the air intake pipe 2 is fixedly connected to the outside of the tower body 1; the high-pressure water pump 3 is fixedly installed on the outside of the lower end of the tower body 1; the liquid supply water pipe 4 is fixedly connected to the upper end surface of the high-pressure water pump 3; a plurality of packing layers 5 are provided, and the plurality of packing layers 5 are all fixedly installed on the inner side of the tower body 1; the exhaust pipe 6 is fixedly connected to the upper end surface of the tower body 1; the exhaust fan 7 is fixedly installed at the lower end of the exhaust pipe 6; the fixed shell 8 is fixedly connected to the outer side of the exhaust pipe 6; and the cleaning mechanism is arranged on the inner side of the air intake pipe 2.

[0034] Among them, the cleaning mechanism includes: a fixed bracket 9, an impeller 10, a first gear 11, a second gear 12, a gear ring 13, a cleaning rod 14, a support ring 15 and a collection box 16; the fixed bracket 9 is fixedly connected to the inner side of the upper end of the air intake pipe 2; the impeller 10 is rotatably connected to the upper end face of the fixed bracket 9; the first gear 11 is fixedly connected to the lower end of the impeller 10; there are multiple second gears 12, and the multiple second gears 12 are all rotatably connected to the lower end of the fixed bracket 9, and the multiple second gears 12 are all meshed with the first gear 11; the gear ring 13 is rotatably connected to the inner side of the upper end of the air intake pipe 2, and the gear ring 13 is meshed with the multiple second gears 12; there are multiple cleaning rods 14, and the multiple cleaning rods 14 are fixedly connected to the lower end face of the gear ring 13; there are multiple support rings 15, and the multiple support rings 15 are respectively fixedly connected to the inner sides of the multiple cleaning rods 14; the collection box 16 is threadedly connected to the inner side of the lower end of the air intake pipe 2.

[0035] Specific usage and function of this embodiment: when the exhaust fan 7 is started, the exhaust gas will be drawn into the tower body 1 through the air intake duct 2. When the exhaust gas enters the air intake duct 2, the exhaust gas will blow the impeller 10 to rotate. The rotation of the impeller 10 will drive the first gear 11 to rotate. The rotation of the first gear 11 will drive the second gear 12 to rotate under the action of meshing with the second gear 12. The rotation of the second gear 12 will drive the cleaning rod 14 to rotate under the action of meshing with the gear ring 13, so as to clean the inner wall of the air intake duct 2. The dust on the inner wall of the air intake duct 2 will fall into the collection box 16. By disassembling the collection box 16, the dust in the collection box 16 can be cleaned.

[0036] Embodiment 2:

[0037] On the basis of the first embodiment, Figure 4-Figure 6As shown, the rotary spray mechanism includes: a connecting joint 17, a spray pipe 18, a spray nozzle 19, a diverter pipe 20, a rotating nozzle 21 and a fixed inclined plate 22; the rotary spray mechanism is arranged on the inner side of the tower body 1; there are multiple connecting joints 17, and the multiple connecting joints 17 are fixedly connected to the upper end of the liquid supply water pipe 4; there are multiple groups of spray pipes 18, and the multiple groups of spray pipes 18 are respectively rotatably connected to the inner sides of the multiple connecting joints 17; there are multiple groups of spray nozzles 19, and the multiple groups of spray nozzles 19 are respectively fixedly installed on the outer sides of the multiple groups of spray pipes 18; there are multiple groups of diverter pipes 20, and the multiple groups of diverter pipes 20 are respectively fixedly connected to the upper ends of the multiple groups of spray pipes 18; there are multiple groups of rotating nozzles 21, and the multiple groups of rotating nozzles 21 are respectively fixedly connected to the outer sides of the multiple groups of diverter pipes 20; there are multiple groups of fixed inclined plates 22, and the multiple groups of fixed inclined plates 22 are all fixedly connected to the inner side of the tower body 1.

[0038] Specific usage and function of this embodiment: when the high-pressure water pump 3 is started, the high-pressure water pump 3 will draw the spray liquid on the inner side of the lower end of the tower body 1 into the connecting joint 17, and the spray liquid in the connecting joint 17 will flow into the spray pipe 18 and the diverter pipe 20 respectively, and then be sprayed out through the spray nozzle 19 and the rotating nozzle 21. The mist spray liquid sprayed by the spray nozzle 19 will purify the exhaust gas in the tower body 1, and the columnar spray liquid sprayed by the rotating nozzle 21 will impact the outer side of the fixed inclined plate 22. At this time, the spray pipe 18 will be driven to rotate, so that the spray nozzle 19 will perform rotational spraying.

[0039] Embodiment three:

[0040] On the basis of the first embodiment, Figure 7-Figure 8As shown, the standby mechanism includes: a standby air intake pipe 23, a reflux hole 2301, a standby tank body 24, a connecting pipe 25, a standby filler 26, a standby spray water pipe 27, a standby spray head 28, a sliding member 29, a sealing plate 30, a spring compression member 31, a fastening plate 32, a pressure touch switch 33 and an alarm 34; the standby mechanism is arranged on the outside of the tower body 1; the standby air intake pipe 23 is fixedly connected to the inside of the tower body 1; the reflux hole 2301 is opened on the outside of the standby air intake pipe 23; the standby tank body 24 is fixedly connected to the upper end surface of the standby air intake pipe 23; the lower end of the connecting pipe 25 is fixedly connected to the upper end surface of the standby tank body 24, and the upper end of the connecting pipe 25 is fixedly connected to the outside of the exhaust pipe 6; a plurality of standby fillers 26 are provided, and the plurality of standby fillers 26 are fixedly connected to the standby tank body 24 ; a plurality of spare spray water pipes 27 are provided, and the plurality of spare spray water pipes 27 are respectively fixedly connected to the outer sides of the liquid supply water pipe 4; a plurality of spare spray heads 28 are provided, and the plurality of spare spray heads 28 are respectively fixedly connected to the outer sides of the plurality of spare spray water pipes 27; a sliding member 29 is slidably connected to the inner side of the fixed shell 8; a sealing plate 30 is hinged on the inner side of the tower body 1, and the sealing plate 30 is slidably connected to the sliding member 29; one end of a spring compression member 31 is fixedly connected to the outer side of the sliding member 29, and the other end of the spring compression member 31 is fixedly connected to the inner side of the fixed shell 8; a fastening plate 32 is fixedly connected to the upper end surface of the sliding member 29; a pressure touch switch 33 is fixedly installed on the upper end surface of the fixed shell 8; an alarm 34 is fixedly installed on the upper end surface of the fixed shell 8, and the alarm 34 is electrically connected to the pressure touch switch 33.

[0041] Specific usage and function of this embodiment: when the sealing plate 30 closes the spare air inlet pipe 23, the spray liquid sprayed by the spare spray head 28 will flow back into the tower body 1 through the reflux hole 2301. When the packing layer 5 is blocked after long-term use, the operation of the exhaust fan 7 will cause the air pressure in the exhaust pipe 6 to decrease. At this time, the sliding member 29 will slide toward the inside of the exhaust pipe 6 under the influence of the air pressure. The sliding of the exhaust pipe 6 will open the sealing plate 30 under the action of the sliding connection with the sealing plate 30. At this time, the exhaust gas at the lower end of the tower body 1 will enter the spare tank body 24 through the spare air inlet pipe 23, so that the spare packing member 26 purifies the exhaust gas, and the sliding of the sliding member 29 will cause the fastening plate 32 to trigger the pressure touch switch 33. At this time, the alarm 34 is powered on and makes a sound to remind the staff to replace the packing layer 5 in the tower body 1 in time.

Claims

1. A waste gas treatment device for heating and burning plastic raw materials, comprising a tower body (1), an air intake pipe (2), a high-pressure water pump (3), a liquid supply pipe (4), a packing layer (5), an exhaust pipe (6), an exhaust fan (7), a fixed shell (8), a cleaning mechanism, a rotary spray mechanism and a standby mechanism; the air intake pipe (2) is fixedly connected to the outside of the tower body (1); characterized in that: The high-pressure water pump (3) is fixedly mounted on the outer side of the lower end of the tower body (1); the liquid supply water pipe (4) is fixedly connected to the upper end surface of the high-pressure water pump (3); a plurality of packing layers (5) are provided, and the plurality of packing layers (5) are fixedly mounted on the inner side of the tower body (1); the exhaust pipe (6) is fixedly connected to the upper end surface of the tower body (1); the exhaust fan (7) is fixedly mounted on the lower end of the exhaust pipe (6); the fixed shell (8) is fixedly connected to the outer side of the exhaust pipe (6); the cleaning mechanism is arranged on the inner side of the air intake pipe (2); the rotary spray mechanism is arranged on the inner side of the tower body (1); the standby mechanism is arranged on the outer side of the tower body (1); the cleaning mechanism comprises: a fixed support The invention relates to a fixed support (9), an impeller (10), a first gear (11), a second gear (12) and a gear ring (13); the fixed support (9) is fixedly connected to the inner side of the upper end of the intake pipe (2); the impeller (10) is rotatably connected to the upper end surface of the fixed support (9); the first gear (11) is fixedly connected to the lower end of the impeller (10); a plurality of second gears (12) are provided, and the plurality of second gears (12) are all rotatably connected to the lower end of the fixed support (9), and the plurality of second gears (12) are all meshed with the first gear (11); the gear ring (13) is rotatably connected to the inner side of the upper end of the intake pipe (2), and the gear ring (13) is meshed with the plurality of second gears (12).

2. A waste gas treatment device for heating and burning plastic raw materials as claimed in claim 1, characterized in that: The cleaning mechanism further comprises: a cleaning rod (14) and a support ring (15); a plurality of the cleaning rods (14) are provided, and the plurality of cleaning rods (14) are fixedly connected to the lower end surface of the gear ring (13); and a plurality of the support rings (15) are provided, and the plurality of support rings (15) are respectively fixedly connected to the inner sides of the plurality of cleaning rods (14).

3. A waste gas treatment device for heating and burning plastic raw materials as claimed in claim 2, characterized in that: The cleaning mechanism further comprises: a collection box (16); the collection box (16) is threadedly connected to the inner side of the lower end of the air intake pipe (2).

4. A waste gas treatment device for heating and burning plastic raw materials as claimed in claim 1, characterized in that: The rotary spray mechanism comprises: a connecting joint (17), a spray pipe (18) and a spray nozzle (19); the connecting joint (17) is provided in plurality, and the plurality of connecting joints (17) are all fixedly connected to the upper end of the liquid supply water pipe (4); the spray pipe (18) is provided in plurality of groups, and the plurality of groups of spray pipes (18) are respectively rotatably connected to the inner sides of the plurality of connecting joints (17); the spray nozzle (19) is provided in plurality of groups, and the plurality of groups of spray nozzles (19) are respectively fixedly installed on the outer sides of the plurality of groups of spray pipes (18).

5. A waste gas treatment device for heating and burning plastic raw materials as claimed in claim 4, characterized in that: The rotary spray mechanism further comprises: a flow diversion pipe (20), a rotary spray head (21) and a fixed inclined plate (22); the flow diversion pipe (20) is provided in a plurality of groups, and the plurality of groups of flow diversion pipes (20) are respectively fixedly connected to the upper ends of the plurality of groups of spray pipes (18); the rotary spray head (21) is provided in a plurality of groups, and the plurality of groups of rotary spray heads (21) are respectively fixedly connected to the outsides of the plurality of groups of flow diversion pipes (20); the fixed inclined plate (22) is provided in a plurality of groups, and the plurality of groups of fixed inclined plates (22) are all fixedly connected to the inside of the tower body (1).

6. A waste gas treatment device for heating and burning plastic raw materials as claimed in claim 1, characterized in that: The standby mechanism comprises: a standby air intake pipe (23), a reflux hole (2301), a standby tank body (24), a connecting pipe (25), a standby filler (26), a standby spray water pipe (27) and a standby spray head (28); the standby air intake pipe (23) is fixedly connected to the inner side of the tower body (1); the reflux hole (2301) is provided on the outer side of the standby air intake pipe (23); the standby tank body (24) is fixedly connected to the upper end surface of the standby air intake pipe (23); the lower end of the connecting pipe (25) is fixedly connected to the standby The upper end surface of the tank body (24) and the upper end of the connecting pipe (25) are fixedly connected to the outer side of the exhaust pipe (6); a plurality of spare filling members (26) are provided, and the plurality of spare filling members (26) are fixedly connected to the inner side of the spare tank body (24); a plurality of spare spray water pipes (27) are provided, and the plurality of spare spray water pipes (27) are respectively fixedly connected to the outer side of the liquid supply water pipe (4); a plurality of spare spray heads (28) are provided, and the plurality of spare spray heads (28) are respectively fixedly connected to the outer side of the plurality of spare spray water pipes (27).

7. A waste gas treatment device for heating and burning plastic raw materials as claimed in claim 6, characterized in that: The standby mechanism further comprises: a sliding member (29), a sealing plate (30) and a spring compression member (31); the sliding member (29) is slidably connected to the inner side of the fixed housing (8); the sealing plate (30) is hinged to the inner side of the tower body (1), and the sealing plate (30) is slidably connected to the sliding member (29); one end of the spring compression member (31) is fixedly connected to the outer side of the sliding member (29), and the other end of the spring compression member (31) is fixedly connected to the inner side of the fixed housing (8).

8. A waste gas treatment device for heating and burning plastic raw materials as claimed in claim 7, characterized in that: The backup mechanism further comprises: a fastening plate (32), a pressure touch switch (33) and an alarm (34); the fastening plate (32) is fixedly connected to the upper end surface of the sliding member (29); the pressure touch switch (33) is fixedly mounted on the upper end surface of the fixed housing (8); the alarm (34) is fixedly mounted on the upper end surface of the fixed housing (8), and the alarm (34) is electrically connected to the pressure touch switch (33).

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