Bamboo powder biodegradable material internal mixer based on reverse injection

Abstract

The utility model discloses a bamboo powder biodegradable material internal mixer based on reverse injection, relates to the related technical field of internal mixers, and aims to solve the problems that in the prior art, materials need to be extracted by an exhaust fan, fall off through an injection mechanism and then enter an internal mixing chamber again through a pushing mechanism, a multi-driving structure is needed, and the production cost is high. And the problem of drive redundancy exists. A material collecting pipe is installed on the second feeding pipe, a material transition box is fixed to the rear end of the other side of the upper end of the operation table, a second driving air cylinder is installed on one side of the material transition box, and the output rod end of the second driving air cylinder extends into the material transition box and is fixedly provided with a sliding sealing disc. A material conveying pipe is installed at the rear end of the material collecting pipe, the other end of the material conveying pipe is connected with a U-shaped conveying pipe, material spraying pipes are installed on two longitudinal pipes of the U-shaped conveying pipe from front to back in an array mode, and the other ends of the material spraying pipes extend into the internal mixing chamber.

Description

Technical Field

[0001] The utility model relates to the technical field related to internal mixers, in particular to an internal mixer for bamboo powder biodegradable materials based on reverse blowing. Background Art

[0002] Internal mixer is a machine with a pair of relatively rotating rotors of a specific shape, which intermittently plasticizes and mixes polymer materials under a closed state with adjustable temperature and pressure. Internal mixer can efficiently mix, grind and homogenize raw materials, greatly improving the efficiency and quality of product processing. Compared with open mixer, internal mixer has the advantages of large mixing capacity, short mixing time and high production efficiency. At the same time, it can effectively overcome the problem of flying dust, reduce the loss of compounding agents, improve product quality and working environment, operate safely and conveniently, reduce labor intensity, and facilitate mechanical and automated operation.

[0003] As the global awareness of environmental protection increases, the demand for biodegradable materials is increasing. Bamboo powder, as a natural plant fiber with a wide source, renewable and good biodegradability, is widely used in the preparation of biodegradable materials. The bamboo powder biodegradable material mixer is a key equipment for evenly mixing bamboo powder with various biodegradable additives. Bamboo powder biodegradable materials usually contain bamboo powder, modified starch, biodegradable resin, coupling agent, biodegradable enzyme and other components. These components are mixed, kneaded and kneaded at high speed in the mixer to form a uniform mixture, and finally prepare bamboo powder biodegradable materials with excellent biodegradability.

[0004] For example, the Chinese authorized patent with announcement number CN 207224335 U (a kind of internal mixer with dust collection device) includes: an internal mixing chamber for mixing several kinds of rubber materials; a feeding port arranged at the top of the internal mixing chamber; a pressing mass arranged in the feeding port and driven to rise and fall by a hydraulic cylinder fixed on the top of the internal mixer and used for squeezing the rubber materials; a dust collecting hood arranged above the pressing mass and used to prevent the rubber materials in the internal mixing chamber from being discharged through the gaps around the feeding port when the pressing mass is pressed down; a dust collecting duct connected to the through hole on the dust collecting duct; and a dust collecting device for collecting the rubber materials discharged from the dust collecting duct and returning the collected rubber materials to the internal mixing chamber, so as to reduce the discharge of rubber materials with air flow and improve product quality.

[0005] Although the above-mentioned prior art has the function of collecting the material overflowed during capping and returning it to the mixing chamber, it requires an exhaust fan to extract the material and make the material fall through a blowing mechanism, and then a pushing mechanism to make the material re-enter the mixing chamber, which requires multiple drive structures and has drive redundancy. Utility Model Content

[0006] The purpose of the utility model is to provide a bamboo powder biodegradable material internal mixer based on reverse blowing to solve the problem proposed in the above background technology that currently an exhaust fan is needed to extract the material and make the material fall through a blowing mechanism, and then a pushing mechanism is used to make the material re-enter the internal mixer, which requires multiple drive structures and has drive redundancy.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bamboo powder biodegradable material internal mixer based on reverse blowing, comprising an operating table, a mixing chamber is installed on one side of the upper end of the operating table, a second feeding pipe is arranged on the upper end of the mixing chamber, a material collecting pipe is installed on the second feeding pipe, and a first one-way pipe is installed on the material collecting pipe; a material transition box is fixed to the rear end of the other side of the upper end of the operating table, a second driving cylinder is installed on one side of the material transition box, an output rod end of the second driving cylinder extends into the material transition box and is fixed with a sliding sealing disk, and the interior of the material transition box is along The side of the sliding sealing disk facing the second driving cylinder is set as a first air cavity, and the inside of the material transition box along the side of the sliding sealing disk facing the material collecting tube is set as a material collecting cavity; a material conveying pipe is installed at the rear end of the material collecting tube, one end of the material conveying pipe is located at one end of the output position of the first one-way tube, a second one-way tube is installed on the material conveying pipe, and the other end of the material conveying pipe is connected to a U-shaped conveying pipe, which is located at the rear end and both sides of the outside of the mixing chamber, and material nozzles are installed in an array from front to back on the two longitudinal tubes of the U-shaped conveying pipe, and the other end of the material nozzle extends to the inside of the mixing chamber.

[0008] Preferably, a first feeding pipe is installed in the middle of the upper end of the mixing chamber, and a second feeding pipe is installed at the upper end of the first feeding pipe, the inner diameter of the second feeding pipe is larger than the inner diameter of the first feeding pipe, and fixed vertical poles are fixed at the four corners of the upper end of the mixing chamber along the outside of the first feeding pipe and the second feeding pipe, and the upper ends of the four fixed vertical poles are commonly connected to an upper supporting cross plate, and a first driving cylinder is installed at the upper end of the upper supporting cross plate, and the output rod end of the first driving cylinder is connected to a lower lifting shaft, and a lower sealing cover plate is fixed to the lower end of the lower lifting shaft, and the outer diameter of the lower sealing cover plate matches the inner diameter of the first feeding pipe.

[0009] Preferably, a fixed plate is fixed to the upper end of the outer part of the lower lifting shaft, side limit convex strips are integrally connected to the two sides of the outer part of the lower lifting shaft, an outer sliding cover plate is slidably connected to the outer part of the lower lifting shaft and the side limit convex strips, the inner diameter of the outer sliding cover plate matches the outer diameter of the second feeding tube, and a pressure spring is fixed between the outer sliding cover plate and the fixed plate along the lower lifting shaft and the outer part of the side limit convex strips.

[0010] Preferably, a fan is installed at the lower end of the operating table, the output end of the fan is connected to a gas delivery pipe, the other end of the gas delivery pipe is connected to the material delivery pipe, the other end of the gas delivery pipe is located on the side of the second one-way tube output position, and a third one-way tube is installed on the gas delivery pipe.

[0011] Preferably, a mixing chamber is formed inside the mixing chamber, and a discharge pipe is installed at the lower end of the mixing chamber, and the discharge pipe extends downward to the lower end of the end surface of the operating table.

[0012] Preferably, rotors are provided at the front and rear ends of the mixing chamber, the rotor includes an intermediate shaft, a spiral rotating mixing element is fixed to the outer array of the intermediate shaft, one end of the intermediate shaft extends outward and is connected to a rotating gear, and the two rotating gears are meshed and connected.

[0013] Preferably, a drive motor is installed at the front end on the other side of the upper end of the operating table, and the output shaft end of the drive motor is connected to the input shaft end of the reduction gearbox through a coupling. The middle shaft on the front end of the rotor extends outward and is connected to the output shaft end of the reduction gearbox through a coupling.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) In the utility model, when the material overflows from the lower sealing cover plate into the second feeding pipe, the second driving cylinder drives the sliding sealing disk to contract, attracting the overflowed material in the second feeding pipe through the material collecting pipe and the first one-way pipe into the material collecting chamber; then the second driving cylinder drives the sliding sealing disk to extend, pushing the material in the material collecting chamber through the material conveying pipe, the second one-way pipe, the gas conveying pipe, the third one-way pipe and the U-shaped conveying pipe to the material nozzle, and spraying it into the mixing chamber through the material nozzle. The collection and reverse blowing of the overflowed material are both realized by the driving structure of the second driving cylinder, and there is no need for two or even three driving structures to cooperate to achieve the material blowing effect. This solves the current problem of needing an exhaust fan to extract the material and make the material fall through the blowing mechanism, and then making the material re-enter the mixing chamber through the pushing mechanism. This requires multiple driving structures and has the problem of driving redundancy.

[0016] (2) In the utility model, the output rod end of the first driving cylinder extends, driving the lower sealing cover plate to enter the second feeding tube. As the output rod end of the first driving cylinder continues to extend, the outer sliding cover plate contacts and covers the upper end of the second feeding tube. As the output rod end of the first driving cylinder continues to extend, the lower sealing cover plate seals the mixing chamber, and the outer sliding cover plate presses the second feeding tube under the action of the pressure spring. To ensure that the material is still located in the space of the second feeding tube when it overflows upwards, the unique sealing mechanism and material collection system can ensure that the material will not overflow from the feed port during the mixing process, reducing material waste and environmental pollution;

[0017] (3) In the utility model, the materials are more fully mixed and dispersed in the mixing chamber through the reverse blowing of the overflowed materials and the dual effects of gas blowing and rotor mixing, which effectively solves the problem of material agglomeration and significantly improves the mixing uniformity and material quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a bamboo powder biodegradable material internal mixer based on reverse blowing from the main perspective of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of a bamboo powder biodegradable material internal mixer based on reverse blowing according to the utility model from a rear perspective;

[0020] Figure 3 It is a front view of a bamboo powder biodegradable material internal mixer based on reverse blowing of the utility model;

[0021] Figure 4 This is an enlarged view of the structure of location A of a bamboo powder biodegradable material internal mixer based on reverse blowing of the utility model;

[0022] Figure 5 This is a cross-sectional view of the internal structure of a mixing chamber of a bamboo powder biodegradable material mixing machine based on reverse blowing according to the utility model;

[0023] Figure 6 The utility model is a cross-sectional view of the internal structure of a material transition box of a bamboo powder biodegradable material internal mixer based on reverse blowing.

[0024] In the figure: 1. operating table; 2. driving motor; 3. reduction box; 4. mixing chamber; 5. mixing cavity; 6. rotor; 7. intermediate shaft; 8. spiral rotating mixing element; 9. rotating gear; 10. fixed vertical rod; 11. upper supporting horizontal plate; 12. first driving cylinder; 13. lower lifting shaft; 14. side limit convex strip; 15. lower sealing cover plate; 16. outer sliding cover plate; 17. pressure spring; 18. first feeding pipe; 19. second feeding pipe; 20. discharging pipe; 21. material transition box; 22. second driving cylinder; 23. sliding sealing disk; 24. first air cavity; 25. material collecting cavity; 26. material collecting pipe; 27. first one-way pipe; 28. material conveying pipe; 29. ​​second one-way pipe; 30. fan; 31. gas conveying pipe; 32. third one-way pipe; 33. U-shaped conveying pipe; 34. material nozzle. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] See also Figure 1-Figure 6 , an embodiment provided by the utility model:

[0027] (1) Main structure

[0028] A bamboo powder biodegradable material internal mixer based on reverse blowing comprises an operating table 1, and an internal mixing chamber 4 is installed on one side of the upper end of the operating table 1 to form an internal mixing chamber 5. A discharge pipe 20 is installed at the lower end of the internal mixing chamber 4 for discharging the mixed material. A first feeding pipe 18 and a second feeding pipe 19 are installed in the middle of the upper end of the internal mixing chamber 4, and the second feeding pipe 19 is installed at the upper end of the first feeding pipe 18, and the inner diameter of the second feeding pipe 19 is greater than the inner diameter of the first feeding pipe 18.

[0029] The front and rear ends of the internal mixing chamber 4 are provided with rotors 6, and the rotors 6 include intermediate shafts 7; the front end of the other side of the upper end of the operating table 1 is installed with a driving motor 2, and the output shaft end of the driving motor 2 is connected to the input shaft end of the reduction box 3 through a coupling, and the intermediate shaft 7 on the front rotor 6 extends outward and is connected to the output shaft end of the reduction box 3 through a coupling, and one of the rotors 6 is driven to rotate through the reduction box 3. The outer array of the intermediate shaft 7 is fixed with a spiral rotating mixer 8, and one end of the intermediate shaft 7 extends outward and is connected to a rotating gear 9, and the two rotating gears 9 are meshed and connected; the spiral rotating mixer 8 on the rotor 6 can achieve mixing and dispersion of materials, improve the mixing uniformity of the materials, and ensure the quality of the materials.

[0030] (2) Material collection and transportation system

[0031] Material collecting pipe 26: A material collecting pipe 26 is installed on the second feeding pipe 19, and a first one-way pipe 27 is installed on the material collecting pipe 26. When the material overflows from the lower sealing cover plate 15, it can be effectively collected by the material collecting pipe 26, thereby avoiding material waste.

[0032] Material transition box 21 and second driving cylinder 22: A material transition box 21 is fixed at the rear end of the other side of the upper end of the operating table 1, and a second driving cylinder 22 is installed on one side of the material transition box 21. The output rod end of the second driving cylinder 22 extends into the material transition box 21 and is fixed with a sliding sealing disk 23. The inside of the material transition box 21 along the side of the sliding sealing disk 23 facing the second driving cylinder 22 is set as a first air cavity 24, and the inside of the material transition box 21 along the side of the sliding sealing disk 23 facing the material collection tube 26 is set as a material collection cavity 25. The telescopic movement of the second driving cylinder 22 can control the negative pressure environment of the material collection cavity 25 to achieve the suction and push of materials.

[0033] Material delivery pipe 28, U-shaped delivery pipe 33 and material nozzle 34: The rear end of the material collection pipe 26 is connected to the material delivery pipe 28, one end of the material delivery pipe 28 is located at one end of the output position of the first one-way pipe 27, and the second one-way pipe 29 is installed on the material delivery pipe 28. The other end of the material delivery pipe 28 is connected to the U-shaped delivery pipe 33, which is located at the rear end and both sides of the outer mixing chamber 4. The two longitudinal pipes of the U-shaped delivery pipe 33 are arrayed from front to back with material nozzles 34, and the other end of the material nozzle 34 extends to the inside of the mixing chamber 4. The material nozzle 34 can re-spray the collected materials into the mixing chamber 5 to achieve material reuse.

[0034] (3) Sealing and drive system

[0035] Fixed vertical rods 10 are fixed at the upper end of the mixing chamber 4 along the four corners of the first feeding tube 18 and the second feeding tube 19. The upper ends of the four fixed vertical rods 10 are commonly connected to the upper supporting horizontal plate 11. The upper end of the upper supporting horizontal plate 11 is installed with the first driving cylinder 12. The output rod end of the first driving cylinder 12 is connected to the lower lifting shaft 13. The lower end of the lower lifting shaft 13 is fixed with a lower sealing cover plate 15, and the outer diameter of the lower sealing cover plate 15 matches the inner diameter of the first feeding tube 18. A fixed plate is fixed to the upper end of the outer side of the lower lifting shaft 13. The side limiting convex strips 14 are integrally connected to the outer sides of the lower lifting shaft 13. The outer side of the lower lifting shaft 13 and the side limiting convex strips 14 are commonly slidably connected to the outer side of the lower lifting shaft 13 and the side limiting convex strips 14. The inner diameter of the outer sliding cover plate 16 matches the outer diameter of the second feeding tube 19. A pressure spring 17 is fixed between the outer sliding cover plate 16 and the fixed plate along the outer side of the lower lifting shaft 13 and the side limiting convex strips 14.

[0036] The height of the lower lifting shaft 13 is relatively high, which is related to the height of the first feeding tube 18 and the second feeding tube 19. When the lower sealing cover plate 15 is located at the lowest end inside the first feeding tube 18, part of the upper part of the lower lifting shaft 13 is still located at the upper end of the second feeding tube 19, so that the outer sliding cover plate 16 is pressed on the upper end of the second feeding tube 19, and the pressure spring 17 is in a compressed state.

[0037] When the outer sliding cover plate 16 begins to contact the second feeding tube 19, the lower sealing cover plate 15 is positioned above one end of the material collecting tube 26, so that when the material collecting tube 26 collects material, the outer sliding cover plate 16 blocks the upper end of the second feeding tube 19 to prevent the material from overflowing from the upper end again.

[0038] (4) Reverse injection system

[0039] Blower 30, gas delivery pipe 31 and third one-way pipe 32: A blower 30 is installed at the lower end of the operating table 1, which is connected to the material delivery pipe 28 through the gas delivery pipe 31. The other end of the gas delivery pipe 31 is located on the output side of the second one-way pipe 29. A third one-way pipe 32 is installed on the gas delivery pipe 31 to ensure that the gas can only flow in one direction. The gas introduced by the blower 30 can be sprayed into the mixing chamber 5 through the material nozzle 34 to achieve reverse blowing. The internal materials are disturbed under the action of the airflow, so that the materials are better mixed, and the mixing uniformity is further improved.

[0040] The outer surface of the lower sealing cover plate 15, the inner lower end surface of the outer sliding cover plate 16, the outer surface of the sliding sealing disk 23 and other structures have a sealing layer to prevent material leakage or internal sealing from being loose.

[0041] Working principle: bamboo powder, modified starch, biodegradable resin, coupling agent, biodegradable enzyme and other components or other material combinations enter the mixing chamber 5 through the first feeding tube 18 and the second feeding tube 19, the output rod end of the first driving cylinder 12 drives the lower lifting shaft 13 and the fixed plate fixed at the upper end of the lower lifting shaft 13 to move downward, the fixed plate fixed at the upper end of the lower lifting shaft 13 drives the outer sliding cover plate 16 and the pressure spring 17 to move downward synchronously, the lower sealing cover plate 15 first enters the second feeding tube 19, and as the first driving cylinder 12 outputs As the output rod end continues to extend, the outer sliding cover plate 16 contacts and covers the upper end of the second feeding tube 19. As the output rod end of the first driving cylinder 12 continues to extend, the lower sealing cover plate 15 enters the first feeding tube 18 and reaches between the first feeding tube 18 and the mixing chamber 5 to seal the mixing chamber 5. Since the outer sliding cover plate 16 is blocked by the second feeding tube 19, as the output rod end of the first driving cylinder 12 extends, the fixed plate moves downward, and the pressure spring 17 gradually contracts and presses the outer sliding cover plate 16 and the second feeding tube 19.

[0042] When the lower sealing cover plate 15 is located in the second feeding tube 19 and moves toward the first feeding tube 18, materials such as bamboo powder overflow from the lower sealing cover plate 15 into the second feeding tube 19. At this time, the second driving cylinder 22 drives the sliding sealing disk 23 to contract, and a negative pressure environment is formed in the material collecting chamber 25, which attracts the overflowing materials from the second feeding tube 19 to enter the material collecting chamber 25 through the material collecting tube 26 and the first one-way tube 27; after the lower sealing cover plate 15 seals the internal mixing chamber 5, the second driving cylinder 22 drives the sliding sealing disk 23 to extend, and pushes the material in the material collecting chamber 25 through the material conveying tube 28, the second one-way tube 29, the gas conveying tube 31, the third one-way tube 32 and the U-shaped conveying tube 33 to reach the material nozzle 34, and sprays it into the internal mixing chamber 5 through the material nozzle 34.

[0043] The raw materials are inside the mixing chamber 5. Driven by the driving motor 2 and meshed with the rotating gears 9 on the two rotors 6, the two rotors 6 rotate to mix the materials in the mixing chamber 5. At the same time, the fan 30 introduces the gas in the gas storage tank, and transports it to the material nozzle 34 through the gas delivery pipe 31, the third one-way pipe 32 and the U-shaped delivery pipe 33, and sprays it into the mixing chamber 5 through the material nozzle 34. Under the action of the airflow, the internal materials are disturbed, so that the materials are better mixed.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A bamboo powder biodegradable material internal mixer based on reverse blowing, comprising an operating table (1), a mixing chamber (4) being installed on one side of the upper end of the operating table (1), characterized in that: A second feeding pipe (19) is arranged at the upper end of the mixing chamber (4), a material collecting pipe (26) is installed on the second feeding pipe (19), and a first one-way pipe (27) is installed on the material collecting pipe (26); a material transition box (21) is fixed to the rear end of the other side of the upper end of the operating table (1), a second driving cylinder (22) is installed on one side of the material transition box (21), an output rod end of the second driving cylinder (22) extends into the material transition box (21) and is fixed with a sliding sealing disk (23), a first air cavity (24) is arranged inside the material transition box (21) along a side of the sliding sealing disk (23) toward the second driving cylinder (22), and the material transition box (21) is provided with a first air cavity (24). ) is provided with a material collecting chamber (25) along one side of the sliding sealing disk (23) toward the material collecting tube (26); a material conveying tube (28) is installed at the rear end of the material collecting tube (26); one end of the material conveying tube (28) is located at one end of the output position of the first one-way tube (27); a second one-way tube (29) is installed on the material conveying tube (28); the other end of the material conveying tube (28) is connected to a U-shaped conveying tube (33); the U-shaped conveying tube (33) is located at the rear end and both sides of the outside of the mixing chamber (4); material nozzles (34) are installed in an array from front to back on the two longitudinal tubes of the U-shaped conveying tube (33); the other end of the material nozzles (34) extends to the inside of the mixing chamber (4).

2. The bamboo powder biodegradable material internal mixer based on reverse blowing according to claim 1, characterized in that: A first feeding pipe (18) is installed in the middle of the upper end of the mixing chamber (4), and a second feeding pipe (19) is installed on the upper end of the first feeding pipe (18). The inner diameter of the second feeding pipe (19) is larger than the inner diameter of the first feeding pipe (18). Fixed vertical rods (10) are fixed at the upper end of the mixing chamber (4) along the four corners outside the first feeding pipe (18) and the second feeding pipe (19). The upper ends of the four fixed vertical rods (10) are commonly connected to an upper supporting horizontal plate (11). A first driving cylinder (12) is installed at the upper end of the upper supporting horizontal plate (11). The output rod end of the first driving cylinder (12) is connected to a lower lifting shaft (13). A lower sealing cover plate (15) is fixed to the lower end of the lower lifting shaft (13). The outer diameter of the lower sealing cover plate (15) matches the inner diameter of the first feeding pipe (18).

3. The bamboo powder biodegradable material internal mixer based on reverse blowing according to claim 2, characterized in that: A fixed plate is fixed to the upper end of the outer part of the lower lifting shaft (13); side limit convex strips (14) are integrally connected to the outer sides of the lower lifting shaft (13); an outer sliding cover plate (16) is slidably connected to the outer parts of the lower lifting shaft (13) and the side limit convex strips (14); the inner diameter of the outer sliding cover plate (16) matches the outer diameter of the second feeding tube (19); and a pressure spring (17) is fixed between the outer sliding cover plate (16) and the fixed plate along the outer parts of the lower lifting shaft (13) and the side limit convex strips (14).

4. The bamboo powder biodegradable material internal mixer based on reverse blowing according to claim 1, characterized in that: A fan (30) is installed at the lower end of the operating table (1); the output end of the fan (30) is connected to a gas delivery pipe (31); the other end of the gas delivery pipe (31) is connected to the material delivery pipe (28); the other end of the gas delivery pipe (31) is located on the side of the output position of the second one-way pipe (29); and a third one-way pipe (32) is installed on the gas delivery pipe (31).

5. The bamboo powder biodegradable material internal mixer based on reverse blowing according to claim 1, characterized in that: A mixing chamber (5) is formed inside the mixing chamber (4), and a discharge pipe (20) is installed at the lower end of the mixing chamber (4), and the discharge pipe (20) extends downward to the lower end of the end surface of the operating table (1).

6. The bamboo powder biodegradable material internal mixer based on reverse blowing according to claim 1, characterized in that: The front and rear ends of the mixing chamber (4) are provided with rotors (6), the rotor (6) comprising an intermediate shaft (7), an array of spiral rotating mixing elements (8) being fixed on the outside of the intermediate shaft (7), one end of the intermediate shaft (7) extending outwards and connected to a rotating gear (9), and the two rotating gears (9) are meshingly connected.

7. The bamboo powder biodegradable material internal mixer based on reverse blowing according to claim 6, characterized in that: A drive motor (2) is installed at the front end of the other side of the upper end of the operating table (1); the output shaft end of the drive motor (2) is connected to the input shaft end of the reduction box (3) via a coupling; the intermediate shaft (7) on the rotor (6) at the front end extends outward and is connected to the output shaft end of the reduction box (3) via a coupling.

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