Special plasticizer esterification reaction device for normal-chain automotive trim

Abstract

The utility model relates to the technical field of plasticizer production, in particular to a special plasticizer esterification reaction device for normal-chain automotive trim, which not only can scrape and clean the inner wall of the device and prevent products from being left in the device to cause product waste, but also enhances the mixing effect of raw materials and enables the raw materials to be heated more quickly. Comprising a heating mechanism; the device further comprises a mixing mechanism, a stirring mechanism, a transmission mechanism and an aeration mechanism, the mixing mechanism is mounted on the heating mechanism to mix the raw materials and scrape the inner wall of the device, the stirring mechanism is mounted on the heating mechanism and stirs the raw materials, and the transmission mechanism is mounted on the stirring mechanism and provides power for the stirring mechanism; the aeration mechanism is mounted on the heating mechanism and is used for aerating and pressurizing the interior of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of plasticizer production, in particular to an esterification reaction device for a special plasticizer for positive-chain automotive interiors. Background Technique

[0002] The special plasticizer for positive-chain automotive interiors is a chemically assisted agent with special design, which is used to improve the flexibility and processing performance of automotive interior materials. This plasticizer is usually added to polymers such as polyvinyl chloride, polyurethane, and acrylate to improve their physical properties and processing characteristics.

[0003] For the existing esterification reaction device of plasticizer, for example, a device and method for esterification reaction of plasticizer disclosed in the invention patent with the application number of 201710217782.8, its main structure includes a device body, an ultrasonic generator, and an air diffuser tube inserted into the device body. There is a heat preservation layer outside the device body. One end of the air diffuser tube located outside the device body is provided with an air inlet, and the other end is provided with air diffuser holes. A heating medium inlet and a heating medium outlet are relatively arranged outside the heat preservation layer; during use, after the reactants and catalysts are uniformly mixed in advance according to the ratio, they are added into the device body for esterification reaction through the feed valve. The heat preservation layer is turned on to preheat the device body for esterification reaction, the ultrasonic generator is turned on, and at the same time, compressed air is introduced into the air diffuser tube for esterification reaction. The discharge valve at the bottom of the esterification reaction device body is opened, and the reaction product is discharged from the discharge valve.

[0004] However, in the existing esterification reaction device, the plasticizer easily adheres to the inner wall of the device after the reaction is completed, resulting in product waste. Moreover, it is difficult for the two raw materials to be fully mixed during esterification, and the esterification efficiency is relatively low. Summary of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides an esterification reaction device for a special plasticizer for positive-chain automotive interiors, which can not only scrape and clean the inner wall of the device to prevent product waste caused by product residues in the device, but also enhance the mixing effect of raw materials and make the raw materials heat up more quickly.

[0006] A special plasticizer esterification reaction device for positive chain automotive interiors of the present utility model includes a heating mechanism; it also includes a mixing mechanism, a stirring mechanism, a transmission mechanism, and an aeration mechanism. The mixing mechanism is installed on the heating mechanism to mix raw materials and scrape the inner wall of the device. The stirring mechanism is installed on the heating mechanism to stir the raw materials. The transmission mechanism is installed on the stirring mechanism to provide power for it. The aeration mechanism is installed on the heating mechanism to aerate and pressurize the inside of the device. The raw materials are transported into the heating mechanism, the heating mechanism heats the raw materials, the aeration mechanism is started, and the aeration mechanism rotates to mix and throw out the raw materials, enhancing the mixing effect of the raw materials and making the raw materials heat more evenly. At the same time, the mixing mechanism drives the stirring mechanism through the transmission mechanism, and the stirring mechanism stirs the raw materials to accelerate the mixing of the raw materials. And the aeration mechanism is started to aerate the inside of the device to increase the pressure inside the device.

[0007] Preferably, the heating mechanism includes four sets of support legs, a heating cylinder, two sets of feed pipes, two sets of valves I, a slope, a discharge pipe, and a valve II. The bottom ends of the four sets of support legs are connected to the ground, the bottom end of the heating cylinder is connected to the top ends of the four sets of support legs. There is a cavity inside the heating cylinder. The bottom ends of the two sets of feed pipes are connected to the inside of the top end of the heating cylinder. The two sets of valves I are respectively installed on the two sets of feed pipes. The bottom end of the slope is connected to the bottom end inside the cavity of the heating cylinder. The top end of the discharge pipe is connected to the inside of the bottom end of the heating cylinder. The valve II is installed on the discharge pipe. Close the valve II and open the two sets of valves I. Add the raw materials into the cavity of the heating cylinder through the two sets of feed pipes, and then close the two sets of valves I. The heating cylinder is powered on to heat the raw materials so that the temperature required for esterification is reached inside the cavity of the heating cylinder. When the esterification is completed, open the valve II, and the product is discharged through the discharge pipe. By setting the slope, the discharge of the product is accelerated, reducing the waste of the product.

[0008] Preferably, the mixing mechanism includes a motor, a speed reducer I, a rotating shaft I, a mixing cylinder, six sets of support rods, and three sets of scraping plates. The bottom end of the motor is connected to the bottom end of the heating cylinder. The bottom end of the speed reducer I is connected to the bottom end of the heating cylinder. The rotating shaft I is rotatably installed at the bottom end inside the cavity of the heating cylinder and is longitudinally connected to the speed reducer I. The bottom end of the mixing cylinder is connected to the top end of the rotating shaft I. The six sets of support rods are all installed on the mixing cylinder. The scraping plates are installed on two sets of support rods on the same side. Start the motor, the motor drives the rotating shaft I to rotate through the speed reducer I, the rotating shaft I drives the mixing cylinder to rotate. The raw materials are added into the mixing cylinder, and the mixing cylinder rotates to mix and throw out the raw materials, making the raw materials impact the inner wall of the heating cylinder, accelerating the temperature rise reaction of the raw materials, and improving the mixing effect of the raw materials. The mixing cylinder also drives the six sets of support rods and the three sets of scraping plates to rotate. The three sets of scraping plates scrape the inner wall of the heating cylinder to prevent the product from adhering to the inner wall of the heating cylinder. At the same time, the six sets of support rods and the three sets of scraping plates can support the mixing cylinder to prevent the mixing cylinder from shaking during rotation.

[0009] Preferably, the bottom end of the mixing cylinder is conical; by providing a conical bottom end, it prevents raw materials from remaining in the mixing cylinder, accelerates the discharge of raw materials from the mixing cylinder, and reduces waste of raw materials.

[0010] Preferably, the stirring mechanism includes a second reducer, a second rotating shaft, six groups of stirring rods and three groups of cleaning brushes. The bottom end of the second reducer is connected to the top end of the heating cylinder. The second rotating shaft is installed in the cavity of the heating cylinder and is longitudinally connected to the second reducer. The six groups of stirring rods are all installed on the second rotating shaft, and the cleaning brushes are installed on two groups of stirring rods on the same side. The transmission mechanism drives the second reducer to drive the second rotating shaft to rotate. The second rotating shaft drives the six groups of stirring rods to rotate. The six groups of stirring rods stir the raw materials in the mixing cylinder to accelerate the mixing of the raw materials. At the same time, the six groups of stirring rods drive the three groups of cleaning brushes to rotate, and the three groups of cleaning brushes clean the mixing cylinder to reduce waste of raw materials and products.

[0011] Preferably, the transmission mechanism includes two groups of brackets, a driving shaft, a first pulley, a driven shaft, a second pulley and a belt. The two groups of brackets are respectively installed on the top end and the bottom end of the heating cylinder. The bracket installed on the bottom end of the heating cylinder is connected to the first reducer. The first pulley is installed on the bracket. The driven shaft is installed on the bracket at the top end of the heating cylinder and is connected to the second reducer. The second pulley is installed on the driven shaft. The belt is tensioned and installed between the first pulley and the second pulley. The first reducer drives the driving shaft to rotate. The driving shaft drives the first pulley to rotate. The first pulley drives the second pulley to rotate through the belt. The second pulley drives the driven shaft to drive the second reducer. By providing two groups of brackets, the stability of the driving shaft and the driven shaft is enhanced.

[0012] Preferably, the aeration mechanism includes an air pump, an air delivery pipe, a shunt pipe and multiple groups of high-pressure nozzles. The air pump is installed on the outer side wall of the heating cylinder. The air delivery pipe is installed on the air pump. The shunt pipe is installed in the cavity of the heating cylinder and is internally connected to the air delivery pipe. Multiple groups of high-pressure nozzles are all installed on the shunt pipe. Start the air pump. The air pump pumps air and transports the gas through the air delivery pipe to the shunt pipe. The shunt pipe distributes the gas to multiple groups of high-pressure nozzles. The high-pressure nozzles spray the gas into the cavity of the heating cylinder to increase the pressure inside the device and increase the degree of aeration.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The raw materials are transported into the heating mechanism, and the heating mechanism heats the raw materials. Start the aeration mechanism. The aeration mechanism rotates to mix the raw materials and then throws them out, enhancing the mixing effect of the raw materials and making the raw materials heat more evenly. At the same time, the mixing mechanism drives the stirring mechanism through the transmission mechanism, and the stirring mechanism stirs the raw materials to accelerate the mixing of the raw materials. And start the aeration mechanism to aerate the inside of the device to increase the pressure inside the device. Description of the Drawings

[0014] Figure 1 is an axonometric structural schematic diagram of the present utility model;

[0015] Figure 2 It is a front - view sectional structure schematic diagram of the heating mechanism and the mixing mechanism of the present utility model;

[0016] Figure 3 It is a right - view sectional structure schematic diagram of the stirring mechanism of the present utility model;

[0017] Figure 4 It is a sectional axonometric structure schematic diagram of the mixing mechanism and the aeration mechanism of the present utility model;

[0018] Figure 5 It is a left - view structure schematic diagram of the transmission mechanism and the aeration mechanism of the present utility model.

[0019] Markings in the attached drawings: 01, heating mechanism; 11, support leg; 12, heating cylinder; 13, feed pipe; 14, valve 1; 15, slope; 16, discharge pipe; 17, valve 2; 02, mixing mechanism; 21, motor; 22, speed reducer 1; 23, rotating shaft 1; 24, mixing cylinder; 25, support rod; 26, scraper; 03, stirring mechanism; 31, speed reducer 2; 32, rotating shaft 2; 33, stirring rod; 34, cleaning brush; 04, transmission mechanism; 41, bracket; 42, driving shaft; 43, pulley 1; 44, driven shaft; 45, pulley 2; 46, belt; 05, aeration mechanism; 51, air pump; 52, air delivery pipe; 53, shunt pipe; 54, high - pressure nozzle. Specific embodiments

[0020] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant attached drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive. Embodiment 1

[0021] A plasticizer esterification reaction device for positive chain automotive interiors of the utility model includes a heating mechanism 01; it also includes a mixing mechanism 02, a stirring mechanism 03, a transmission mechanism 04, and an aeration mechanism 05. The mixing mechanism 02 is installed on the heating mechanism 01 to mix raw materials and scrape the inner wall of the device. The stirring mechanism 03 is installed on the heating mechanism 01 to stir the raw materials. The transmission mechanism 04 is installed on the stirring mechanism 03 to provide power for it. The aeration mechanism 05 is installed on the heating mechanism 01 to aerate and pressurize the inside of the device. The heating mechanism 01 includes four sets of support legs 11, a heating cylinder 12, two sets of feed pipes 13, two sets of valve one 14, a slope 15, a discharge pipe 16, and a valve two 17. The bottom ends of the four sets of support legs 11 are connected to the ground. The bottom end of the heating cylinder 12 is connected to the top ends of the four sets of support legs 11. There is a cavity inside the heating cylinder 12. The bottom ends of the two sets of feed pipes 13 are connected to the inside of the top end of the heating cylinder 12. The two sets of valve one 14 are respectively installed on the two sets of feed pipes 13. The bottom end of the slope 15 is connected to the bottom end inside the cavity of the heating cylinder 12. The top end of the discharge pipe 16 is connected to the inside of the bottom end of the heating cylinder 12. The valve two 17 is installed on the discharge pipe 16. The mixing mechanism 02 includes a motor 21, a speed reducer one 22, a rotating shaft one 23, a mixing cylinder 24, six sets of support rods 25, and three sets of scraping plates 26. The bottom end of the motor 21 is connected to the bottom end of the heating cylinder 12. The bottom end of the speed reducer one 22 is connected to the bottom end of the heating cylinder 12. The rotating shaft one 23 is rotatably installed at the bottom end inside the cavity of the heating cylinder 12 and is longitudinally connected to the speed reducer one 22. The bottom end of the mixing cylinder 24 is connected to the top end of the rotating shaft one 23. The six sets of support rods 25 are all installed on the mixing cylinder 24. The scraping plates 26 are installed on two sets of support rods 25 on the same side. The stirring mechanism 03 includes a speed reducer two 31, a rotating shaft two 32, six sets of stirring rods 33, and three sets of cleaning brushes 34. The bottom end of the speed reducer two 31 is connected to the top end of the heating cylinder 12. The rotating shaft two 32 is installed inside the cavity of the heating cylinder 12 and is longitudinally connected to the speed reducer two 31. The six sets of stirring rods 33 are all installed on the rotating shaft two 32. The cleaning brushes 34 are installed on two sets of stirring rods 33 on the same side. The transmission mechanism 04 includes two sets of brackets 41, a driving shaft 42, a pulley one 43, a driven shaft 44, a pulley two 45, and a belt 46. The two sets of brackets 41 are respectively installed at the top end and the bottom end of the heating cylinder 12. The bracket 41 installed at the bottom end of the heating cylinder 12 is connected to the speed reducer one 22. The pulley one 43 is installed on the bracket 41. The driven shaft 44 is installed on the bracket 41 at the top end of the heating cylinder 12 and is connected to the speed reducer two 31. The pulley two 45 is installed on the driven shaft 44. The belt 46 is tensioned and installed between the pulley one 43 and the pulley two 45. The aeration mechanism 05 includes an air pump 51, an air delivery pipe 52, a shunt pipe 53, and multiple groups of high-pressure nozzles 54. The air pump 51 is installed on the outer side wall of the heating cylinder 12. The air delivery pipe 52 is installed on the air pump 51. The shunt pipe 53 is installed inside the cavity of the heating cylinder 12 and is internally connected to the air delivery pipe 52. The multiple groups of high-pressure nozzles 54 are all installed on the shunt pipe 53;When it is working, first close valve two 17 and open two groups of valve one 14. Add raw materials into the cavity of the heating cylinder 12 through two groups of feeding pipes 13. Then close two groups of valve one 14. Connect the heating cylinder 12 to the power supply to heat the raw materials, so that the temperature required for esterification is reached in the cavity of the heating cylinder 12. Start the motor 21. The motor 21 drives the rotating shaft one 23 to rotate through the first speed reducer 22. The rotating shaft one 23 drives the mixing cylinder 24 to rotate. The raw materials are added into the mixing cylinder 24. The mixing cylinder 24 rotates to mix the raw materials and then throws them out, so that the raw materials impact the inner wall of the heating cylinder 12, accelerating the temperature rise reaction of the raw materials and improving the mixing effect of the raw materials. At the same time, the mixing cylinder 24 drives six groups of support rods 25 and three groups of scraping plates 26 to rotate. The three groups of scraping plates 26 scrape the inner wall of the heating cylinder 12 to prevent the product from sticking to the inner wall of the heating cylinder 12. At the same time, the six groups of support rods 25 and the three groups of scraping plates 26 can support the mixing cylinder 24 to prevent the mixing cylinder 24 from shaking during rotation. The first speed reducer 22 drives the driving shaft 42 to rotate. The driving shaft 42 drives the pulley one 43 to rotate. The pulley one 43 drives the pulley two 45 to rotate through the belt 46. The pulley two 45 drives the driven shaft 44 to drive the second speed reducer 31. By setting two groups of brackets 41, the stability of the driving shaft 42 and the driven shaft 44 is enhanced. The driven shaft 44 drives the second speed reducer 31 to drive the rotating shaft two 32 to rotate. The rotating shaft two 32 drives six groups of stirring rods 33 to rotate. The six groups of stirring rods 33 stir the raw materials in the mixing cylinder 24 to accelerate the mixing of the raw materials. At the same time, the six groups of stirring rods 33 drive three groups of cleaning brushes 34 to rotate. The three groups of cleaning brushes 34 clean the mixing cylinder 24 to reduce the waste of raw materials and products. At the same time, start the air pump 51. The air pump 51 pumps air and transports the gas into the shunt pipe 53 through the air delivery pipe 52. The shunt pipe 53 distributes the gas to multiple groups of high-pressure nozzles 54. The high-pressure nozzles 54 spray the gas into the cavity of the heating cylinder 12 to increase the pressure in the device and the degree of aeration. When the esterification is completed, open valve two 17, and the product is discharged through the discharge pipe 16. By setting the slope 15, the discharge of the product is accelerated, reducing the waste of the product.; Example 2

[0022] Such as Figures 1 to 5As shown in the figure, a special esterification reaction device for positive-chain automotive interior plasticizers of the present utility model is based on Example 1; further, the bottom end of the mixing cylinder 24 is conical; during its operation, first, close Valve II 17 and open two groups of Valve I 14, add raw materials into the cavity of the heating cylinder 12 through two groups of feed pipes 13, then close two groups of Valve I 14, connect the heating cylinder 12 to the power supply to heat the raw materials, so that the temperature required for esterification is reached in the cavity of the heating cylinder 12, start the motor 21, the motor 21 drives the rotating shaft I 23 to rotate through the first reducer 22, the rotating shaft I 23 drives the mixing cylinder 24 to rotate, the raw materials are added into the mixing cylinder 24, and the mixing cylinder 24 rotates to mix the raw materials and then throw them out, so that the raw materials impact the inner wall of the heating cylinder 12, accelerating the temperature rise reaction of the raw materials and improving the mixing effect of the raw materials. At the same time, the mixing cylinder 24 drives six groups of support rods 25 and three groups of scraping plates 26 to rotate, and the three groups of scraping plates 26 scrape the inner wall of the heating cylinder 12 to prevent the product from adhering to the inner wall of the heating cylinder 12. At the same time, the six groups of support rods 25 and the three groups of scraping plates 26 can support the mixing cylinder 24 to prevent the mixing cylinder 24 from shaking during rotation. By setting the conical bottom end, it prevents the raw materials from remaining in the mixing cylinder 24, accelerates the discharge of the raw materials from the mixing cylinder 24, reduces the waste of raw materials. The first reducer 22 drives the driving shaft 42 to rotate, the driving shaft 42 drives the pulley I 43 to rotate, the pulley I 43 drives the pulley II 45 to rotate through the belt 46, and the pulley II 45 drives the driven shaft 44 to drive the second reducer 31. By setting two groups of brackets 41, the stability of the driving shaft 42 and the driven shaft 44 is enhanced. The driven shaft 44 drives the second reducer 31 to drive the rotating shaft II 32 to rotate, and the rotating shaft II 32 drives six groups of stirring rods 33 to rotate. The six groups of stirring rods 33 stir the raw materials in the mixing cylinder 24 to accelerate the mixing of the raw materials. At the same time, the six groups of stirring rods 33 drive three groups of cleaning brushes 34 to rotate, and the three groups of cleaning brushes 34 clean the mixing cylinder 24 to reduce the waste of raw materials and products. At the same time, start the air pump 51, the air pump 51 pumps air and conveys the gas through the air delivery pipe 52 to the shunt pipe 53, the shunt pipe 53 distributes the gas to multiple groups of high-pressure nozzles 54, and the high-pressure nozzles 54 spray the gas into the cavity of the heating cylinder 12 to increase the pressure inside the device and the degree of aeration. When the esterification is completed, open Valve II 17, and the product is discharged through the discharge pipe 16. By setting the slope 15, the discharge of the product is accelerated, reducing the waste of the product.

[0023] The motor 21, the first reducer 22, the second reducer 31 and the air pump 51 of the present utility model are purchased on the market. Technical personnel in this industry only need to install and operate according to the attached operation manuals, without the need for creative labor from technical personnel in this field.

[0024] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A positive chain automobile interior plasticizer esterification reaction device, comprising a heating mechanism (01); characterized in that: The device also comprises a mixing mechanism (02), a stirring mechanism (03), a transmission mechanism (04) and an aeration mechanism (05). The mixing mechanism (02) is mounted on the heating mechanism (01) to mix the raw materials and scrape the inner wall of the device. The stirring mechanism (03) is mounted on the heating mechanism (01) to stir the raw materials. The transmission mechanism (04) is mounted on the stirring mechanism (03) to provide power therefor. The aeration mechanism (05) is mounted on the heating mechanism (01) to aerate and increase pressure in the device.

2. The esterification reaction device for positive chain automobile interior plasticizer according to claim 1, characterized in that: The heating mechanism (01) comprises four groups of supporting legs (11), a heating cylinder (12), two groups of material conveying pipes (13), two groups of valve one (14), a slope (15), a discharge pipe (16) and a valve two (17). The bottom ends of the four groups of supporting legs (11) are connected to the ground, the bottom ends of the heating cylinders (12) are connected to the top ends of the four groups of supporting legs (11), a cavity is arranged inside the heating cylinder (12), the bottom ends of the two groups of material conveying pipes (13) are connected to the top end of the heating cylinder (12), the two groups of valve one (14) are respectively mounted on the two groups of material conveying pipes (13), the bottom end of the slope (15) is connected to the bottom end of the cavity of the heating cylinder (12), the top end of the discharge pipe (16) is connected to the bottom end of the heating cylinder (12), and the valve two (17) is mounted on the discharge pipe (16).

3. The esterification reaction device for positive chain automobile interior plasticizer according to claim 2, characterized in that: The mixing mechanism (02) comprises a motor (21), a reducer (22), a rotating shaft (23), a mixing barrel (24), six groups of support rods (25) and three groups of scrapers (26). The bottom end of the motor (21) is connected to the bottom end of the heating barrel (12), the bottom end of the reducer (22) is connected to the bottom end of the heating barrel (12), the rotating shaft (23) is rotatably mounted at the bottom end of the cavity of the heating barrel (12) and is longitudinally connected to the reducer (22), the bottom end of the mixing barrel (24) is connected to the top end of the rotating shaft (23), the six groups of support rods (25) are all mounted on the mixing barrel (24), and the scrapers (26) are mounted on two groups of support rods (25) on the same side.

4. The esterification reaction device for positive chain plasticizer for automobile interior decoration according to claim 3, characterized in that: The bottom end of the mixing cylinder (24) is also conical.

5. The esterification reaction device for positive chain automobile interior plasticizer according to claim 2, characterized in that: The stirring mechanism (03) comprises a second reducer (31), a second rotating shaft (32), six groups of stirring rods (33) and three groups of cleaning brushes (34). The bottom end of the second reducer (31) is connected to the top end of the heating cylinder (12). The second rotating shaft (32) is installed in the cavity of the heating cylinder (12) and is longitudinally connected to the second reducer (31). The six groups of stirring rods (33) are all installed on the second rotating shaft (32). The cleaning brushes (34) are installed on the two groups of stirring rods (33) on the same side.

6. The esterification reaction device for positive chain automobile interior plasticizer according to claim 3, characterized in that: The transmission mechanism (04) comprises two sets of brackets (41), a driving shaft (42), a first pulley (43), a driven shaft (44), a second pulley (45) and a belt (46). The two sets of brackets (41) are respectively mounted on the top and bottom ends of the heating cylinder (12). The bracket (41) is mounted on the bracket (41) at the bottom end of the heating cylinder (12) and connected to the first reducer (22). The first pulley (43) is mounted on the bracket (41). The driven shaft (44) is mounted on the bracket (41) at the top end of the heating cylinder (12) and connected to the second reducer (31). The second pulley (45) is mounted on the driven shaft (44). The belt (46) is tensioned and mounted between the first pulley (43) and the second pulley (45).

7. The esterification reaction device for positive chain automobile interior plasticizer according to claim 2, characterized in that: The aeration mechanism (05) comprises an air pump (51), an air delivery pipe (52), a flow diversion pipe (53) and a plurality of groups of high-pressure nozzles (54); the air pump (51) is mounted on the outer wall of the heating cylinder (12); the air delivery pipe (52) is mounted on the air pump (51); the flow diversion pipe (53) is mounted in the cavity of the heating cylinder (12) and is connected to the inside of the air delivery pipe (52); and the plurality of groups of high-pressure nozzles (54) are mounted on the flow diversion pipe (53).

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