Mixing device

Abstract

The utility model provides a mixing device and belongs to the technical field of plastic processing equipment. The problems that in the prior art, manual mixing and proportioning work efficiency is low, and proportioning precision is low are solved. The material mixing device comprises a machine frame, a controller, a mixing bin and a new material bin communicated with the mixing bin are arranged on the machine frame, a reserved connector used for being connected with a toner quantitative conveying device is arranged on the mixing bin, and a rotating disc used for stirring plastic particles is arranged in the mixing bin. First material level sensors are arranged at an inlet and an outlet of the mixing bin respectively, a first feeding valve used for controlling opening and closing of the inlet is arranged at the inlet of the mixing bin, and a first discharging valve used for controlling opening and closing of the outlet is arranged at the outlet of the mixing bin. The controller is electrically connected with the first feeding valve, the first discharging valve and the two first material level sensors. The mixing device has the advantage that the mixing precision and the mixing efficiency of the mixing device can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic processing equipment and relates to a material mixing device. Background Art

[0002] At present, plastic coloring is generally achieved by adding plastic particles of various colors during production to meet color matching requirements, while the coloring of plastic particles is achieved by mixing a certain proportion of color powder with plastic particles using a plastic color matching machine. The existing proportion of color powder and plastic particles is manually mixed, which not only has a large workload and low work efficiency, but also has low matching accuracy. Summary of the invention

[0003] The purpose of the utility model is to propose a mixing device in view of the above problems existing in the prior art. The technical problem to be solved by the utility model is how to improve the mixing accuracy and mixing efficiency of the mixing device.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A mixing device, comprising a frame, characterized in that a controller, a mixing bin and a new bin connected to the mixing bin are arranged on the frame, a reserved interface for connecting a quantitative conveying device for color powder or masterbatch particles is arranged on the mixing bin, a rotating disk for stirring plastic particles is arranged in the mixing bin, a material level sensor is arranged at the inlet and outlet of the mixing bin respectively, a feed valve for controlling the opening and closing of the inlet is arranged at the inlet of the mixing bin, a discharge valve for controlling the opening and closing of the outlet is arranged at the outlet of the mixing bin, and the controller is electrically connected to the feed valve, the discharge valve and two material level sensors respectively. When in use, the reserved interface is connected to the quantitative conveying device for quantitatively supplying color powder or masterbatch particles.

[0006] A mixing device includes a frame, characterized in that a controller, a mixing bin and a new bin connected to the mixing bin are arranged on the frame, a reserved interface for connecting a quantitative conveying device for color powder or masterbatch particles is arranged on the mixing bin, a rotating disk for stirring plastic particles is arranged in the mixing bin, a quantitative conveying component 1 is arranged between the outlet of the new bin and the inlet of the mixing bin, and the quantitative conveying component 1 can convey a quantitative amount of plastic particles in the new bin to the mixing bin, a feed valve 1 for controlling the opening and closing of the inlet is arranged at the inlet of the mixing bin, a discharge valve 1 for controlling the opening and closing of the outlet is arranged at the outlet of the mixing bin, a material level sensor 1 is arranged at the outlet of the mixing bin, and the controller is electrically connected to the material level sensor 1, the feed valve 1, the discharge valve 1 and the quantitative conveying component 1. When in use, the reserved interface is connected to the quantitative conveying device for quantitatively supplying color powder or masterbatch particles.

[0007] In the above-mentioned mixing device, the outlet of the new material bin and the inlet of the mixing bin are staggered front and back, and the quantitative conveying component includes a conveying barrel arranged between the outlet of the new material bin and the inlet of the mixing bin, a conveying screw horizontally arranged in the conveying barrel, and a conveying motor controlling the rotation of the conveying screw.

[0008] In the above-mentioned mixing device, the mixing bin is cylindrical, the rotating disk has a plurality of stirring claws distributed along the circumference of the mixing bin, the stirring claws extend along the length direction of the mixing bin, and the frame is provided with a stirring motor electrically connected to the controller, and the stirring motor controls the rotating disk to rotate along the circumference of the mixing bin.

[0009] In the above-mentioned mixing device, the new material bin is also connected to an air supply component for supplying dry hot gas. The air supply component supplies dry hot gas into the new material bin during operation, so that the plastic particles in the new material bin remain dry, thereby ensuring the quality of the finished products obtained in the subsequent injection molding or blow molding process. It should be noted that the air supply component will only work when the plastic particles in the new material bin need to be dried, such as PC, ABS and other plastic particles need to be dried, while PE, PP and other plastic particles do not need to be dried.

[0010] In the above-mentioned mixing device, the air supply component includes a heating cylinder connected to the side wall of the new material bin, an electric heating rod is arranged in the heating cylinder, and a fan for blowing the dry hot gas in the heating cylinder to the new material bin is also arranged on the heating cylinder. In addition, the air supply component can also use a warm fan.

[0011] In the above-mentioned mixing device, a return bin is also provided on the frame, and the return bin is connected to the mixing bin through a connecting pipe. A quantitative conveying component 2 is provided between the return bin and the connecting pipe. The quantitative conveying component 2 can convey a quantitative amount of plastic particles in the return bin to the mixing bin. The controller is electrically connected to the quantitative conveying component 2, and a feed valve 2 and a discharge valve 2 are respectively provided at the inlet and outlet of the connecting pipe.

[0012] In the above-mentioned mixing device, the quantitative conveying component 2 includes a conveying barrel 2 arranged between the outlet of the return bin and the inlet of the connecting pipe, a conveying screw 2 arranged vertically in the conveying barrel 2, and a conveying motor 2 for controlling the rotation of the conveying screw 2. The outlet of the return bin is located at the upper end of the conveying screw 2, and the inlet of the connecting pipe is located on the side close to the lower end of the conveying screw 2.

[0013] In the above-mentioned mixing device, a return bin is also provided on the frame, and the return bin is connected with the mixing bin through a connecting pipe, a storage barrel is provided between the outlet of the return bin and the inlet of the connecting pipe, and two material level sensors are provided at the inlet and outlet of the storage barrel respectively, a feed valve three for controlling the opening and closing of the inlet is provided at the inlet of the storage barrel, and a discharge valve three for controlling the opening and closing of the outlet is provided at the outlet of the storage barrel, and the controller is electrically connected to the feed valve three, the discharge valve three and the two material level sensors two respectively.

[0014] In the above-mentioned mixing device, the inner wall of the mixing bin is detachably provided with an inner sleeve, and the mixing bin can be easily cleaned after use by removing the inner sleeve.

[0015] Compared with the prior art, the advantages of the mixing device are that the mixing device can automatically carry out quantitative proportioning and automatic mixing and stirring operations of new materials, recycled old materials and color powder, thereby improving the mixing accuracy and mixing efficiency of the mixing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the mixing device in Example 1 and Example 4.

[0017] Figure 2 It is a schematic diagram of the partial three-dimensional structure of the mixing device in Example 1 and Example 4 without the mixing bin door.

[0018] Figure 3 It is a partial three-dimensional structural schematic diagram of the mixing device in the first embodiment and the fourth embodiment from the rear view.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the mixing device in Example 2 and Example 3.

[0020] Figure 5 It is a partial three-dimensional structural schematic diagram of the mixing device in the second embodiment and the third embodiment from the rear view.

[0021] Figure 6 It is a schematic diagram of the partial three-dimensional structure of the mixing device in Example 2 and Example 3 without the mixing bin door.

[0022] Figure 7 It is a schematic diagram of the partial three-dimensional structure of a mixing device according to the first embodiment in which a plurality of reserved interfaces are arranged.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of a quantitative conveying device for color powder or masterbatch particles.

[0024] Fig. 9 It is a cross-sectional view of a quantitative conveying device for toner or masterbatch particles.

[0025] In the figure, 1, frame; 2, mixing bin; 2a, reserved interface; 3, new bin; 4, rotating disk; 4a, stirring claw; 5, material level sensor 1; 6, feeding valve 1; 7, discharging valve 1; 8, quantitative conveying component 1; 8a, feeding barrel 1; 8b, conveying screw 1; 8c, feeding motor 1; 9, stirring motor; 10, air supply component; 10a, heating barrel; 10b, electric heating rod; 10c, fan; 11, return bin; 12, connecting pipeline; 13, quantitative conveying component 2; 13a, feeding barrel 2; 13b, conveying screw 2; 13c, feeding electric Machine 2; 14. Feed valve 2; 15. Discharge valve 2; 16. Storage barrel; 17. Material level sensor 2; 18. Feed valve 3; 19. Discharge valve 3; 20. Inner sleeve; 21. Machine base; 22. Feed barrel; 22a. Feed port; 22b. Discharge port; 23. Storage bin; 24. Feed valve; 25. Blocking plate; 26. Pushing seat; 27. Piston rod; 28. Material storage space; 29. ​​Driving mechanism; 29b. Cylinder; 30. Bolt; 31. Scale mark; 32. Blowing device; 32a. Ventilation pipe; 32a1. Air vent; 33. Air inlet. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] Embodiment 1

[0028] A mixing device, referring to Figure 1-3 , including a frame 1, on which a controller, a mixing bin 2 and a new bin 3 connected to the mixing bin 2 are arranged, the mixing bin 2 is provided with a reserved interface 2a for connecting a quantitative conveying device for color powder or masterbatch particles, the mixing bin 2 is provided with a rotating disk 4 for stirring plastic particles, the inlet and outlet of the mixing bin 2 are respectively provided with a material level sensor 5, the inlet of the mixing bin 2 is provided with a feed valve 6 for controlling the opening and closing of the inlet, the outlet of the mixing bin 2 is provided with a discharge valve 7 for controlling the opening and closing of the outlet, the controller is electrically connected to the feed valve 6, the discharge valve 7 and the two material level sensors 5 respectively. The mixing bin 2 is cylindrical, the rotating disk 4 has a plurality of stirring claws 4a distributed along the circumference of the mixing bin 2, and the stirring claws 4a extend along the length direction of the mixing bin 2, the frame 1 is provided with a stirring motor 9 electrically connected to the controller, and the stirring motor 9 controls the rotating disk 4 to rotate along the circumference of the mixing bin 2.

[0029] Furthermore, the new material bin 3 is also connected to an air supply assembly 10 for supplying dry hot gas. Specifically, the air supply assembly 10 includes a heating cylinder 10a connected to the side wall of the new material bin 3, an electric heating rod 10b is arranged in the heating cylinder 10a, and a fan 10c is also arranged on the heating cylinder 10a for blowing the dry hot gas in the heating cylinder 10a toward the new material bin 3.

[0030] The working principle of this mixing device is described below:

[0031] The reserved interface 2a is connected to the quantitative conveying device of the color powder or masterbatch particles. The quantitative conveying device of the color powder or masterbatch particles can adopt a screw conveyor. The purpose of conveying a quantitative amount of color powder is achieved by controlling the rotation speed and rotation time of the screw conveyor. When working, the controller controls the feed valve 6 to open, and the plastic particles in the new silo 3 fall into the mixing silo 2. At the same time, the controller controls the quantitative conveying device of the color powder or masterbatch particles to convey a certain amount of color powder into the mixing silo 2. When the plastic particles accumulate to the position of the material level sensor 5 at the entrance of the mixing silo 2, the material level sensor 5 transmits a signal to the controller, and the controller controls the feed valve 6 to close. At this time, because the capacity of the mixing silo 2 is certain, the quantitative amount of the color powder or masterbatch particles The amount of toner conveyed by the conveying device to the mixing bin 2 is also certain, so there are predetermined amounts of plastic particles and toner in the mixing bin respectively. Then, the controller controls the stirring motor 9 to work, and the stirring motor 9 controls the rotating disk 4 to rotate along the circumference of the mixing bin 2 to achieve uniform mixing of the plastic particles and toner in the mixing bin 2. Finally, the controller controls the discharge valve 7 to open, and the evenly mixed plastic particles and toner fall into the storage barrel for subsequent injection molding or blow molding operations. When the plastic particles fall to the position of the material level sensor 5 at the outlet of the mixing bin 2, the material level sensor 5 transmits a signal to the controller, and the controller controls the discharge valve 7 to close, and then continuously repeats the above steps to improve the mixing accuracy and mixing efficiency.

[0032] At the same time, the air supply component 10 supplies dry hot air into the new material bin 3 during operation, so that the plastic particles in the new material bin 3 remain dry, thereby ensuring the quality of the finished product obtained in the subsequent injection molding or blow molding process.

[0033] It should be noted that, refer to Figure 7 A plurality of reserved interfaces 2a can be provided so that the mixing bin 2 can be connected to a plurality of quantitative conveying devices for toner or masterbatch particles at the same time. When one of the quantitative conveying devices for toner or masterbatch particles is shut down for cleaning or maintenance, the other quantitative conveying devices for toner or masterbatch particles can continue to work without shutting down, thereby improving work efficiency.

[0034] In addition, in this embodiment, an automatic material suction mechanism is preferably provided on the new material bin 3, and the automatic material suction mechanism includes an air suction pipe and a material suction pipe connected to the new material bin 3. The air suction pipe is used to exhaust the air in the new material bin 3 so that a negative pressure is formed in the new material bin 3, and the material suction pipe is used to connect to the material source.

[0035] Reference Figure 8 and Fig. 9 The quantitative conveying device for color powder or masterbatch particles includes a machine base 21, on which a long strip-shaped feeding cylinder 22 is arranged, and a feed port 22a and a discharge port 22b are respectively arranged on the upper and lower sides of the feeding cylinder 22, and the discharge port 22b and the feeding port 22a are staggered front and back, and a storage bin 23 is arranged above the feeding port 22a, and a feeding valve 24 for controlling the opening or closing of the feeding port 22a is also arranged on the feeding cylinder 22, and a blocking plate 25 and a cylindrical pushing seat 26 are arranged in the feeding cylinder 22, and a piston rod 27 is arranged in the pushing seat 26, and the piston rod 27 can move relative to the pushing seat 26 or drive the pushing seat 26 to move synchronously, one end of the piston rod 27 extends out of the pushing seat 26 and is connected to the blocking plate 25, and the other end of the piston rod 27 is connected to a driving mechanism 29, and a material storage space 28 is formed between the blocking plate 25 and the pushing seat 26.

[0036] Specifically, refer to Figure 8 and Fig. 9 The feeding cylinder 22 and the pushing seat 26 are both in the shape of square cylinders, the piston rod 27 is in the shape of a rectangular parallelepiped, and a bolt 30 for locking the position of the pushing seat 26 and the piston rod 27 is detachably provided between them; the piston rod 27 is provided with scale marks 31 along its length direction; the driving mechanism 29 is a cylinder 29b, and the conveying shaft of the cylinder 29b is connected to the piston rod 27.

[0037] Further, refer to Figure 8 and Fig. 9 , the storage bin 23 is provided with a blowing device 32 for promoting the falling of materials. Specifically, the blowing device 32 includes a vent pipe 32a penetrating the side wall of the storage bin 23, the end of the vent pipe 32a extending out of the storage bin 23 is connected to an air source, and the part of the vent pipe 32a located in the storage bin 23 is provided with a plurality of air holes 32a1. In this embodiment, the part of the storage bin 23 located below the blowing device 32 is in a shape of being larger at the top and smaller at the bottom, which can better promote the falling of materials and make the feeding smoother, especially for powdered materials. At the same time, the feeding cylinder 22 is provided with an air inlet 33 for connecting to the air source at the part located above the discharge port 22b.

[0038] Embodiment 2

[0039] A mixing device, referring to Figure 4-6, including a frame 1, on which a controller, a mixing bin 2 and a new material bin 3 connected to the mixing bin 2 are arranged, the mixing bin 2 is provided with a reserved interface 2a for connecting a quantitative conveying device for color powder or masterbatch particles, a rotating disk 4 for stirring plastic particles is arranged in the mixing bin 2, a quantitative conveying component 8 is arranged between the outlet of the new material bin 3 and the inlet of the mixing bin 2, the quantitative conveying component 8 can convey a certain amount of plastic particles in the new material bin 3 to the mixing bin 2, a feed valve 6 for controlling the opening and closing of the inlet is arranged at the inlet of the mixing bin 2, a discharge valve 7 for controlling the opening and closing of the outlet is arranged at the outlet of the mixing bin 2, a material level sensor 5 is arranged at the outlet of the mixing bin 2, and the controller is electrically connected to the material level sensor 5, the feed valve 6, the discharge valve 7 and the quantitative conveying component 8.

[0040] Specifically, the outlet of the new material bin 3 and the inlet of the mixing bin 2 are staggered front and back, and the quantitative conveying component 8 includes a feeding barrel 8a arranged between the outlet of the new material bin 3 and the inlet of the mixing bin 2, a conveying screw 8b horizontally arranged in the feeding barrel 8a, and a feeding motor 8c for controlling the rotation of the conveying screw 8b.

[0041] In this embodiment, the inner wall of the mixing chamber 2 is preferably detachably provided with an inner sleeve 20. By removing the inner sleeve 20, the cleaning of the mixing chamber 2 after use can be facilitated.

[0042] The working principle of this mixing device is described below:

[0043] During operation, the reserved interface 2a is connected to the quantitative conveying device of the color powder or masterbatch particles, the controller controls the feed valve 6 to open, and the plastic particles in the new silo 3 fall into the feed barrel 8a. At the same time, the controller controls the feed motor 8c to work, and the feed motor 8c controls the conveying screw 8b in the feed barrel 8a to rotate. The controller also controls the quantitative conveying device of the color powder or masterbatch particles to convey a certain amount of color powder into the mixing bin 2. The time required for the conveying screw 8b to rotate can be calculated in advance according to the rotation speed of the conveying screw 8b and the capacity of the mixing bin 2. When the predetermined rotation time of the conveying screw 8b is reached, the controller controls the feed valve 6 to close. At this time, because the capacity of the mixing bin 2 and the rotation speed of the conveying screw 8b are certain, the color powder Or the amount of color powder delivered to the mixing bin 2 by the quantitative delivery device of the masterbatch particles is also certain, so there are predetermined amounts of plastic particles and color powder in the mixing bin respectively. Then, the controller controls the stirring motor 9 to work, and the stirring motor 9 controls the rotating disk 4 to rotate along the circumference of the mixing bin 2 to achieve uniform mixing of the plastic particles and the color powder in the mixing bin 2. Finally, the controller controls the discharge valve 7 to open, and the evenly mixed plastic particles and color powder fall into the storage barrel for subsequent injection molding or blow molding process operations. When the plastic particles fall to the position of the material level sensor 5 at the outlet of the mixing bin 2, the material level sensor 5 transmits a signal to the controller, and the controller controls the discharge valve 7 to close, and then continuously repeats the above steps to improve the mixing accuracy and mixing efficiency.

[0044] At the same time, the air supply component 10 supplies dry hot air into the new material bin 3 during operation, so that the plastic particles in the new material bin 3 remain dry, thereby ensuring the quality of the finished product obtained in the subsequent injection molding or blow molding process.

[0045] Embodiment 3

[0046] The structure and principle of this embodiment are basically the same as those of the first or second embodiment, except that: Figure 4-6 The frame 1 is also provided with a return bin 11, which is connected to the mixing bin 2 through a connecting pipe 12. A quantitative conveying component 13 is provided between the return bin 11 and the connecting pipe 12. The quantitative conveying component 13 can convey a quantitative amount of plastic particles in the return bin 11 to the mixing bin 2. The controller is electrically connected to the quantitative conveying component 13. A feed valve 14 and a discharge valve 15 are respectively provided at the inlet and outlet of the connecting pipe 12.

[0047] Specifically, the quantitative conveying component 13 includes a conveying barrel 13a arranged between the outlet of the return bin 11 and the inlet of the connecting pipe 12, a conveying screw 13b vertically arranged in the conveying barrel 13a, and a control device for controlling the rotation of the conveying screw 13b. The outlet of the return bin 11 is located at the upper end of the conveying screw 13b, and the inlet of the connecting pipe 12 is located on the side close to the lower end of the conveying screw 13b.

[0048] In this embodiment, the return bin 11 is preferably provided with an automatic material suction mechanism, which includes an air suction pipe and a material suction pipe connected to the return bin 11. The air suction pipe is used to exhaust the air in the return bin 11 to form a negative pressure in the return bin 11, and the material suction pipe is used to connect to the material source.

[0049] The working principle of this mixing device is described below:

[0050] The return bin 11 contains recycled plastic particles. When working, the controller controls the feed valve 14 to open and the feed motor 13c to work, the discharge valve 15 is in a closed state, and the feed motor 13c controls the conveying screw 13b in the feed barrel 13a to rotate. The amount of recycled materials entering the connecting pipe 12 can be calculated by the rotation speed and rotation time of the conveying screw 13b. When the amount of recycled materials in the connecting pipe 12 reaches a predetermined amount (known by the rotation time of the conveying screw 13b), the controller controls the feed valve 14 to close, the discharge valve 15 to open, and the feed motor 13c to stop working, and the recycled materials in the connecting pipe 12 enter the mixing bin 2, so that a certain amount of recycled materials are mixed into the mixing bin, that is, before the controller controls the stirring motor 9 to work, the mixing bin 2 has a certain amount of new materials, a certain amount of recycled materials and a certain amount of toner, thereby reducing production costs.

[0051] Embodiment 4

[0052] The structure and principle of this embodiment are basically the same as those of the first or second embodiment, except that: Figure 1-3 A return bin 11 is also provided on the frame 1, and the return bin 11 is connected with the mixing bin 2 through a connecting pipe 12, and a storage barrel 16 is provided between the outlet of the return bin 11 and the inlet of the connecting pipe 12, and level sensors 17 are respectively provided at the inlet and outlet of the storage barrel 16, and a feed valve 3 18 for controlling the opening and closing of the inlet is provided at the inlet of the storage barrel 16, and a discharge valve 3 19 for controlling the opening and closing of the outlet is provided at the outlet of the storage barrel 16, and the controller is electrically connected to the feed valve 3 18, the discharge valve 3 19 and the two level sensors 17 respectively.

[0053] In this embodiment, the return bin 11 is preferably provided with an automatic material suction mechanism, which includes an air suction pipe and a material suction pipe connected to the return bin 11. The air suction pipe is used to exhaust the air in the return bin 11 to form a negative pressure in the return bin 11, and the material suction pipe is used to connect to the material source.

[0054] The working principle of this mixing device is described below:

[0055] The return bin 11 contains recycled plastic particles. When working, the controller controls the feed valve three 18 to open and the discharge valve three 19 to close, and the recycled materials in the return bin 11 fall into the storage barrel 16. When the recycled materials in the storage barrel 16 accumulate to the position of the material level sensor two 17 at the entrance of the storage barrel 16, the material level sensor two 17 transmits a signal to the controller, and the controller controls the feed valve three 18 to close and the discharge valve three 19 to open, and the recycled materials in the storage barrel 16 enter the mixing bin 2 through the connecting pipe 12, so that a certain amount of recycled materials are added to the mixing bin (because the capacity of the storage barrel 16 is certain), that is, before the controller controls the stirring motor 9 to work, there is a certain amount of new material, a certain amount of recycled materials and a certain amount of color powder in the mixing bin 2, thereby reducing production costs.

[0056] Embodiment five:

[0057] The structure and principle of this embodiment are basically the same as those of the third or fourth embodiment, with the difference being that the return bin 11 is also connected to an air supply assembly, which supplies hot dry gas into the return bin 11 during operation, so that the plastic particles in the return bin 11 remain dry, thereby ensuring the quality of the finished products obtained in the subsequent injection molding or blow molding process. It should be noted that the air supply assembly will only work when the plastic particles in the return bin need to be dried, such as PC, ABS and other plastic particles need to be dried, while PE, PP and other plastic particles do not need to be dried.

[0058] The air supply assembly includes a heating cylinder connected to the side wall of the return bin 11, an electric heating rod is arranged in the heating cylinder, and a fan for blowing the dry hot gas in the heating cylinder to the new bin is also arranged on the heating cylinder. In addition, the air supply assembly can also adopt a warm fan.

[0059] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined in the appended claims.

Claims

1. A mixing device, comprising a frame (1), characterized in that: A controller, a mixing bin (2) and a new silo (3) connected to the mixing bin (2) are arranged on the frame (1); a reserved interface (2a) for connecting a quantitative conveying device for color powder or masterbatch particles is arranged on the mixing bin (2); a rotating disk (4) for stirring plastic particles is arranged in the mixing bin (2); a material level sensor (5) is arranged at the inlet and outlet of the mixing bin (2), respectively; a feed valve (6) for controlling the opening and closing of the inlet is arranged at the inlet of the mixing bin (2); a discharge valve (7) for controlling the opening and closing of the outlet is arranged at the outlet of the mixing bin (2); and the controller is electrically connected to the feed valve (6), the discharge valve (7) and the two material level sensors (5), respectively.

2. A mixing device, comprising a frame (1), characterized in that: A controller, a mixing bin (2) and a new bin (3) connected to the mixing bin (2) are arranged on the frame (1); a reserved interface (2a) for connecting a quantitative conveying device for color powder or masterbatch particles is arranged on the mixing bin (2); a rotating disk (4) for stirring plastic particles is arranged in the mixing bin (2); a quantitative conveying component (8) is arranged between the outlet of the new bin (3) and the inlet of the mixing bin (2); the quantitative conveying component (8) can convey a quantitative amount of plastic particles in the new bin (3) to the mixing bin (2); a feed valve (6) for controlling the opening and closing of the inlet is arranged at the inlet of the mixing bin (2); a discharge valve (7) for controlling the opening and closing of the outlet is arranged at the outlet of the mixing bin (2); a material level sensor (5) is arranged at the outlet of the mixing bin (2); and the controller is electrically connected to the material level sensor (5), the feed valve (6), the discharge valve (7) and the quantitative conveying component (8).

3. A mixing device according to claim 2, characterized in that: The outlet of the new material bin (3) and the inlet of the mixing bin (2) are arranged in a front-to-back staggered manner, and the quantitative conveying component (8) comprises a conveying barrel (8a) arranged between the outlet of the new material bin (3) and the inlet of the mixing bin (2), a conveying screw (8b) horizontally arranged in the conveying barrel (8a), and a conveying motor (8c) for controlling the rotation of the conveying screw (8b).

4. A mixing device according to claim 1, 2 or 3, characterized in that: The mixing chamber (2) is cylindrical, the rotating disk (4) has a plurality of stirring claws (4a) distributed along the circumference of the mixing chamber (2), the stirring claws (4a) extending along the length direction of the mixing chamber (2), and the frame (1) is provided with a stirring motor (9) electrically connected to a controller, the stirring motor (9) controlling the rotating disk (4) to rotate along the circumference of the mixing chamber (2).

5. A mixing device according to claim 1, 2 or 3, characterized in that: The new material bin (3) is also connected to a gas supply component (10) for supplying dry hot gas.

6. A mixing device according to claim 5, characterized in that: The air supply assembly (10) comprises a heating cylinder (10a) connected to the side wall of the new material bin (3), an electric heating rod (10b) is arranged in the heating cylinder (10a), and a fan (10c) is also arranged on the heating cylinder (10a) for blowing the dry hot gas in the heating cylinder (10a) toward the new material bin (3).

7. A mixing device according to claim 1, 2 or 3, characterized in that: The frame (1) is also provided with a return bin (11), the return bin (11) being connected to the mixing bin (2) via a connecting pipe (12), a second quantitative conveying component (13) being provided between the return bin (11) and the connecting pipe (12), the second quantitative conveying component (13) being capable of conveying a quantitative amount of plastic particles in the return bin (11) to the mixing bin (2), the controller being electrically connected to the second quantitative conveying component (13), and a second feed valve (14) and a second discharge valve (15) being provided at the inlet and outlet of the connecting pipe (12), respectively.

8. A mixing device according to claim 7, characterized in that: The quantitative conveying component 2 (13) comprises a conveying barrel 2 (13a) arranged between the outlet of the return bin (11) and the inlet of the connecting pipe (12), a conveying screw 2 (13b) arranged vertically in the conveying barrel 2 (13a), and a conveying motor 2 (13c) for controlling the rotation of the conveying screw 2 (13b), the outlet of the return bin (11) is located at the upper end of the conveying screw 2 (13b), and the inlet of the connecting pipe (12) is located on a side close to the lower end of the conveying screw 2 (13b).

9. A mixing device according to claim 1, 2 or 3, characterized in that: The frame (1) is also provided with a return bin (11), which is connected to the mixing bin (2) via a connecting pipe (12), a storage barrel (16) is provided between the outlet of the return bin (11) and the inlet of the connecting pipe (12), and two material level sensors (17) are provided at the inlet and outlet of the storage barrel (16), respectively, a feed valve (18) for controlling the opening and closing of the inlet is provided at the inlet of the storage barrel (16), and a discharge valve (19) for controlling the opening and closing of the outlet is provided at the outlet of the storage barrel (16), and the controller is electrically connected to the feed valve (18), the discharge valve (19) and the two material level sensors (17), respectively.

10. A mixing device according to claim 1, 2 or 3, characterized in that: The inner wall of the mixing bin (2) is detachably provided with an inner sleeve (20).

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