Vertical double-screw stirrer

Abstract

The utility model relates to a vertical double-screw stirrer which comprises a hollow stirring barrel, the stirring barrel is vertically arranged along the vertical direction, at least two main shafts are mounted in the stirring barrel in a matched manner, and a stirring module is mounted on the outer circumferential surface of each main shaft in a matched manner; one end of the single main shaft extends out of the mixing drum and is connected with the output end of a driving motor, and a discharge port and at least one feed port are respectively formed in the wall surface of the mixing drum; the feeding port is used for feeding powder raw materials and liquid raw materials, the driving motor drives the main shaft to rotate and drives the corresponding stirring module to rotate, so that the powder raw materials and the liquid raw materials in the stirring barrel are stirred to form slurry, and the slurry is discharged through the discharging port. A vertical arrangement mode is adopted, so that the problem that metal abrasive dust is generated during operation of the double-screw stirrer can be effectively solved, and the quality of lithium battery slurry is improved; and meanwhile, the retention time of the slurry in the stirring barrel is effectively prolonged, and efficient slurry preparation is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery slurry preparation, in particular to a vertical twin-screw mixer. Background Art

[0002] The twin-screw mixer is the core equipment for preparing lithium battery slurry and is used for stirring and mixing lithium battery slurry.

[0003] In the prior art, the twin-screw mixer is usually a horizontal twin-screw mixer. When the equipment operates, the two screws rub against the inner wall of the mixing cylinder under the action of gravity, generating metal chips, which affects the quality of lithium battery slurry. At the same time, when the horizontal twin-screw mixer prepares slurry, the material is forcibly conveyed to the tail end, so that the residence time of the slurry in the twin-screw mixing cylinder is very short, the number of times the slurry is stirred is small, and the homogenization effect is poor. Summary of the Utility Model

[0004] The applicant of the present utility model aims at the above-mentioned disadvantages in the existing production technology and provides a vertical twin-screw mixer with a reasonable structure. By adopting a vertical arrangement method, the problem of generating metal chips during the operation of the twin-screw mixer can be effectively solved, thereby improving the quality of lithium battery slurry. At the same time, the residence time of the slurry in the mixing cylinder is effectively prolonged, and high-efficiency slurry preparation is realized.

[0005] The technical solution adopted by the present utility model is as follows:

[0006] A vertical twin-screw mixer includes a mixing cylinder with a hollow interior. The mixing cylinder is arranged vertically. At least two main shafts are fitted and installed inside the mixing cylinder. Stirring modules are fitted and installed on the outer circumferential surface of a single main shaft. One end of a single main shaft extends out of the mixing cylinder and is connected to the output end of a driving motor. Discharge ports and at least one feed port are respectively formed on the wall surface of the mixing cylinder.

[0007] The feed port is used for feeding powder raw materials and liquid raw materials. The driving motor drives the main shaft to rotate, driving the corresponding stirring module to rotate, so as to stir the powder raw materials and liquid raw materials in the mixing cylinder to form slurry, and the slurry is discharged through the discharge port.

[0008] As a further improvement of the above technical solution:

[0009] The feed ports on the mixing cylinder include a powder material port and several liquid material ports.

[0010] The powder material port is connected to a powder material feed pipe, and the powder raw materials enter the mixing cylinder through the powder material feed pipe.

[0011] A single liquid material port is connected to the discharge end of a liquid supply system through a liquid material feed pipe, and the liquid supply system transports the liquid raw materials to the mixing cylinder through the liquid material feed pipe.

[0012] A feeding hopper is fitted onto the powder feeding pipe, and the feeding hopper is used for feeding powder raw materials.

[0013] The feeding port on the mixing drum includes a raw material feeding port, and a feeding module is fitted at the raw material feeding port.

[0014] The structure of the feeding module is as follows: it includes a feeding cylinder with a hollow interior, at least one conveying shaft is fitted inside the feeding cylinder, at least one set of feeding conveying components and at least one set of feeding kneading components are fitted on the outer circumferential surface of a single conveying shaft, one end of a single conveying shaft extends out of the feeding cylinder and is connected to the output end of a feeding drive;

[0015] A first feeding port for feeding powder raw materials and a second feeding port for feeding liquid raw materials are formed on the wall surface of the feeding cylinder;

[0016] The feeding drive drives the conveying shaft to rotate, driving the corresponding feeding conveying components and feeding kneading components to rotate, so that the feeding kneading components premix the powder raw materials and liquid raw materials in the feeding cylinder, and the feeding conveying components drive the mixture in the feeding cylinder into the mixing drum.

[0017] When the raw material feeding port is located above the discharge port in the vertical direction, the main shaft in the mixing drum rotates in the same direction; or,

[0018] When the raw material feeding port is located below the discharge port in the vertical direction, the main shaft in the mixing drum rotates in the opposite direction.

[0019] The structure of the mixing module is as follows: it includes a first conveying component, a second conveying component, and a mixing kneading component respectively fixed on the outer circumferential surface of the main shaft;

[0020] The first conveying component drives the materials in the mixing drum to flow from the feeding end to the discharge end;

[0021] The second conveying component prevents the materials in the mixing drum from flowing from the feeding end to the discharge end;

[0022] The mixing kneading component mixes the materials in the mixing drum.

[0023] The first conveying component, the second conveying component, and the mixing kneading component all adopt a screw element structure.

[0024] A supporting device is fitted at the bottom of the mixing drum, and the supporting device supports the main shaft in the mixing drum to rotate stably through a bearing.

[0025] The beneficial effects of the present utility model are as follows:

[0026] The utility model has a compact and reasonable structure and is convenient to operate. By arranging a stirring cylinder and a main shaft vertically, when the main shaft rotates, its rotation direction is perpendicular to the gravity direction, which can avoid the deformation of the main shaft, and further ensure that the main shaft and the stirring module will not rub against the inner wall of the stirring cylinder, improving the quality of pulp making. At the same time, the vertical arrangement can rely on gravity to extend the residence time of the pulp in the stirring and kneading assembly, thus realizing efficient pulp making.

[0027] In the utility model, by arranging a feeding conveying assembly and a feeding kneading assembly, the materials in the feeding cylinder can be infiltrated and kneaded and conveyed to the stirring cylinder.

[0028] In the utility model, by arranging the raw material feeding port below the discharging port, the material flow direction in the stirring cylinder is from bottom to top. The pulp can be conveyed upward only after the stirring cylinder is filled with the pulp, greatly improving the kneading and dispersing effect on the pulp.

[0029] In the utility model, by arranging a stirring module, the pulp can be stirred and kneaded, improving the uniformity of the pulp, and can also improve the fluidity of the pulp, realizing the directional conveying of the pulp, extending the residence time of the pulp at the position of the stirring and kneading assembly in the stirring cylinder, and further improving the pulp making effect.

[0030] In the utility model, by arranging a supporting device, the free end of the main shaft can be limited, which is suitable for the working condition with a longer main shaft length and can improve the rotation stability of the main shaft. Description of the Drawings

[0031] Figure 1 It is a schematic structural diagram of the first embodiment of the utility model.

[0032] Figure 2 It is a schematic internal structural diagram of the first embodiment of the utility model.

[0033] Figure 3 It is a schematic structural diagram of the second embodiment of the utility model.

[0034] Figure 4 It is a schematic structural diagram of the third embodiment of the utility model.

[0035] Wherein: 1. Driving motor; 2. Stirring cylinder; 3. Discharging port; 4. Transmission box; 5. Stirring module; 6. Feeding module; 7. Supporting device; 8. Feeding hopper; 9. Liquid material feeding pipe; 10. Powder material feeding pipe;

[0036] 501. First conveying assembly; 502. Second conveying assembly; 503. Stirring and kneading assembly;

[0037] 601. Feeding drive; 602. Feeding cylinder; 603. First feed inlet; 604. Second feed inlet; 605. Feeding conveying assembly; 606. Feeding kneading assembly. Detailed implementation manners

[0038] The following combines with the attached drawings to illustrate the detailed implementation manners of the present utility model.

[0039] During the long-term operation of traditional horizontal twin-screw mixers, it is inevitable that metal particles are generated due to the friction between the screws and the inner wall of the mixing cylinder. If supports are added to the screw shafts or ceramic screw elements are used, the problem of metal chips cannot be completely solved. There is an urgent need to design a new type of twin-screw mixer.

[0040] Based on this, the present utility model proposes a vertical twin-screw mixer, aiming to solve the problems of low pulp-making efficiency and poor pulp-making quality of traditional horizontal twin-screw mixers.

[0041] As Figures 1-4 shown, a vertical twin-screw mixer includes a mixing cylinder 2 with a hollow interior. The mixing cylinder 2 is arranged vertically. At least two main shafts are fitted inside the mixing cylinder 2. A mixing module 5 is fitted on the outer circumferential surface of a single main shaft. One end of a single main shaft extends outside the mixing cylinder 2 and is connected to the output end of a driving motor 1. A discharge port 3 and at least one feed inlet are respectively formed on the wall surface of the mixing cylinder 2. The feed inlet is used for feeding powder raw materials and liquid raw materials. The driving motor 1 drives the main shaft to rotate, driving the corresponding mixing module 5 to rotate, so as to stir the powder raw materials and liquid raw materials in the mixing cylinder 2 to form a slurry, and the slurry is discharged through the discharge port 3. The vertical twin-screw mixer of the present utility model is used for efficiently preparing lithium battery slurry and can realize the kneading and dispersing functions. At the same time, the mixing cylinder 2 and the main shaft are both arranged vertically, so that when the main shaft rotates, its rotation direction is perpendicular to the gravity direction, which can avoid the deformation of the main shaft, and further ensure that the main shaft and the mixing module 5 will not rub against the inner wall of the mixing cylinder 2, improving the pulp-making quality.

[0042] In the present utility model, a direct feeding method can be adopted. As Figures 1-2 shown, the feed inlet on the mixing cylinder 2 includes a powder material port and several liquid material ports. The powder material port is connected to a powder feeding pipe 10, and the powder raw material enters the mixing cylinder 2 through the powder feeding pipe 10. A single liquid material port is connected to the discharge end of a liquid supply system through a liquid material feeding pipe 9, and the liquid supply system transports the liquid raw material to the mixing cylinder 2 through the liquid material feeding pipe 9. A feed hopper 8 is fitted on the powder feeding pipe 10, and the feed hopper 8 is used for feeding the powder raw material. A conveying screw is fitted in the powder feeding pipe 10 for directionally conveying the powder inside it into the mixing cylinder 2.

[0043] An L-shaped feeding method can also be adopted. As Figures 3-4As shown, the feeding port on the mixing drum 2 includes a raw material feeding port, and a feeding module 6 is fitted and installed at the raw material feeding port; the feeding module 6 is arranged horizontally, and the material flow direction inside it is perpendicular to the material flow direction in the mixing drum 2.

[0044] The structure of the feeding module 6 is as follows: it includes a feeding cylinder 602 with a hollow interior, at least one conveying shaft is fitted and installed inside the feeding cylinder 602, at least one set of feeding conveying components 605 and at least one set of feeding kneading components 606 are fitted and installed on the outer circumferential surface of a single conveying shaft, one end of a single conveying shaft extends out of the feeding cylinder 602 and is connected to the output end of the feeding drive 601; a first feeding port 603 for powder raw material feeding and a second feeding port 604 for liquid raw material feeding are provided on the wall surface of the feeding cylinder 602; the feeding drive 601 drives the conveying shaft to rotate, driving the corresponding feeding conveying components 605 and feeding kneading components 606 to rotate, so that the feeding kneading components 606 premix the powder raw material and liquid raw material in the feeding cylinder 602, and the feeding conveying components 605 drive the mixture in the feeding cylinder 602 into the mixing drum 2;

[0045] When the raw material feeding port is above the discharge port 3 in the vertical direction, the main shaft in the mixing drum 2 rotates in the same direction; or when the raw material feeding port is below the discharge port 3 in the vertical direction, the main shaft in the mixing drum 2 rotates in the opposite direction.

[0046] The feeding conveying components 605 and the feeding kneading components 606 can adopt a screw element structure.

[0047] By arranging the feeding conveying components 605 and the feeding kneading components 606 in the feeding module 6, the materials in the feeding cylinder 602 can be infiltrated and kneaded, and then enter the mixing drum 2, and are further stirred and kneaded by the stirring module 5, so as to realize two-stage stirring and effectively improve the uniformity of the slurry.

[0048] In addition, by arranging the raw material feeding port below the discharge port 3, at this time, the material flow direction in the mixing drum 2 is from bottom to top, and the slurry can be filled in the mixing drum 2 before it can be conveyed upward, greatly improving the kneading and dispersion effect on the slurry.

[0049] The structure of the stirring module 5 is as follows: it includes a first conveying component 501, a second conveying component 502, and a stirring kneading component 503 respectively fixed on the outer circumferential surface of the main shaft; the first conveying component 501 drives the materials in the mixing drum 2 to flow along the feeding to discharge direction; the second conveying component 502 prevents the materials in the mixing drum 2 from flowing along the feeding to discharge direction; the stirring kneading component 503 stirs the materials in the mixing drum 2;

[0050] The first conveying component 501, the second conveying component 502, and the stirring and kneading component 503 all adopt a screw element structure.

[0051] By providing the stirring module 5, the slurry can be stirred and kneaded, improving the uniformity of the slurry, enhancing the fluidity of the slurry, achieving the directional conveyance of the slurry, prolonging the residence time of the slurry at the position of the stirring and kneading component 503 of the stirring cylinder 2, and further improving the pulping effect.

[0052] A support device 7 is cooperatively installed at the bottom of the stirring cylinder 2, and the support device 7 supports the stable rotation of the main shaft in the stirring cylinder 2 through bearings. By providing the support device 7, the free end of the main shaft can be limited, which is applicable to working conditions with a relatively long main shaft length and can improve the rotational stability of the main shaft.

[0053] The working process of the present utility model is as follows:

[0054] The powder raw material and the liquid raw material are put into the stirring cylinder 2 through the feeding port;

[0055] The powder raw material and the liquid raw material are stirred and mixed by the stirring and kneading component 503 in cooperation with the first conveying component 501 and the second conveying component 502 to obtain the slurry;

[0056] The slurry in the stirring cylinder 2 is caused to flow along the direction from the feeding port to the discharging port by the first conveying component 501 (in the present utility model, corresponding to the direction from the powder material port to the discharging port 3, or the direction from the raw material port to the discharging port 3);

[0057] The second conveying component 502 prevents the slurry in the stirring cylinder 2 from discharging, thereby reducing the flow rate of the slurry in the stirring cylinder 2 and prolonging the kneading and stirring time of the stirring and kneading component 503 for the slurry;

[0058] After a certain period of time, the slurry in the stirring cylinder 2 is discharged through the discharging port 3.

[0059] The following is the specific embodiment part.

[0060] Embodiment 1:

[0061] As Figures 1-2 shown, a vertical twin-screw mixer of the present embodiment includes a driving motor 1, a stirring cylinder 2, a transmission box 4, a stirring module 5, and a support device 7;

[0062] A powder material port, several liquid material ports, and a discharging port 3 are respectively formed on the side wall surface of the stirring cylinder 2 from top to bottom;

[0063] A powder material feeding pipe 10 is installed on the powder material port, a conveying screw is installed inside the powder material feeding pipe 10, and a feeding hopper 8 is installed on the powder material feeding pipe 10;

[0064] A liquid feed pipe 9 is installed on its liquid material inlet.

[0065] Several main shafts are installed inside the mixing drum 2 in a matching manner. Each single main shaft is connected to the output end of the driving motor 1 through a transmission box 4, and the transmission box 4 is arranged above the top of the mixing drum 2.

[0066] A support device 7 is installed at the bottom of the mixing drum 2, and the support device 7 is rotationally matched with the main shaft.

[0067] Each single main shaft is sequentially installed with a mixing module 5 from top to bottom. In this embodiment, along the direction from material inlet to discharge, three groups of first conveying components 501, two groups of mixing and kneading components 503, one group of second conveying components 502, one group of first conveying components 501, two groups of mixing and kneading components 503, one group of second conveying components 502, one group of first conveying components 501, two groups of mixing and kneading components 503, one group of second conveying components 502, one group of first conveying components 501, two groups of mixing and kneading components 503, one group of second conveying components 502, one group of first conveying components 501, two groups of mixing and kneading components 503, and one group of second conveying components 502 are sequentially installed on each single main shaft.

[0068] The liquid raw material first enters the mixing drum 2 through the liquid feed pipe 9;

[0069] The powder raw material sequentially passes through the feed hopper 8, the powder feed pipe 10, and the powder material inlet and enters the mixing drum 2. Under the action of the first conveying component 501, the powder raw material is infiltrated with the liquid raw material in the mixing drum 2;

[0070] Subsequently, it is mixed under the action of the mixing and kneading component 503 to obtain a slurry;

[0071] Each second conveying component 502 arranged adjacent to each mixing and kneading component 503 can prevent the slurry from being conveyed downward, thereby increasing the slurry filling rate in the corresponding mixing and kneading component 503 and prolonging the kneading time of the powder-liquid components in the slurry;

[0072] When one of the mixing and kneading components 503 is filled with slurry, the slurry will break through the blockage of the corresponding second conveying component 502 under the action of gravity and enter the next mixing and kneading component 503, thereby realizing efficient pulp making.

[0073] Embodiment Two:

[0074] As Figure 3 shown, a vertical twin-screw mixer in this embodiment includes a driving motor 1, a mixing drum 2, a transmission box 4, a mixing module 5, and a feeding module 6;

[0075] A raw material inlet is provided above the side wall surface of the mixing drum 2, and a discharge port 3 is provided on the bottom wall surface of the mixing drum 2;

[0076] An input module 6 is installed at the raw material inlet. On a single conveying shaft in the input module 6, three groups of input conveying components 605, one group of input kneading components 606, one group of input conveying components 605, two groups of input kneading components 606, one group of input conveying components 605, and two groups of input kneading components 606 are successively installed.

[0077] At positions on the side wall surface of the input cylinder 602 corresponding to the three groups of input conveying components 605, first feed ports 603 are opened. A conical hopper for facilitating the feeding of powder raw materials can be installed on the first feed ports 603. Second feed ports 604 are also opened on the side wall surface of the input cylinder 602 for the feeding of liquid raw materials.

[0078] Several main shafts are installed inside the mixing cylinder 2 in a matching manner. A single main shaft is connected to the output end of the driving motor 1 through a transmission box 4, and the transmission box 4 is arranged above the top of the mixing cylinder 2.

[0079] A mixing module 5 is successively installed on a single main shaft from top to bottom. In this embodiment, along the direction from feeding to discharging, three groups of first conveying components 501, two groups of mixing and kneading components 503, one group of second conveying components 502, one group of first conveying components 501, two groups of mixing and kneading components 503, one group of second conveying components 502, one group of first conveying components 501, two groups of mixing and kneading components 503, and one group of second conveying components 502 are successively installed on a single main shaft.

[0080] The liquid raw material first enters the input cylinder 602 through the second feed port 604;

[0081] The powder raw material enters the input cylinder 602 through the first feed port 603. Under the action of the input conveying components 605, the powder raw material is wetted with the liquid raw material in the input cylinder 602. Under the action of the input kneading components 606, the powder raw material and the liquid raw material in the input cylinder 602 are premixed.

[0082] Subsequently, under the action of the three groups of first conveying components 501, the materials in the input cylinder 602 continuously flow into the mixing cylinder 2 through the raw material inlet, and are mixed under the action of the mixing and kneading components 503 to obtain a slurry;

[0083] Each second conveying component 502 arranged adjacent to each mixing and kneading component 503 can prevent the slurry from being conveyed downward, thereby increasing the slurry filling rate in the corresponding mixing and kneading component 503 and prolonging the kneading time of the powder-liquid components in the slurry;

[0084] When one of the mixing and kneading components 503 is filled with the slurry, the slurry will break through the blockage of the corresponding second conveying component 502 under the action of gravity and enter the next mixing and kneading component 503, thereby realizing efficient pulp making.

[0085] Embodiment 3:

[0086] As shown in Figure 4 , a vertical twin-screw mixer according to this embodiment is different from that of Embodiment 2 in that: a raw material inlet is provided below the side wall surface of the mixing cylinder 2, and a discharge port 3 is provided above the side wall surface of the mixing cylinder 2, that is, in this embodiment, the discharge port 3 is located above the raw material inlet;

[0087] Correspondingly, in this embodiment, a set of second conveying components 502, two sets of first conveying components 501, two sets of stirring and kneading components 503, a set of first conveying components 501, two sets of stirring and kneading components 503, a set of first conveying components 501, two sets of stirring and kneading components 503, and three sets of first conveying components 501 are sequentially installed on a single main shaft from top to bottom.

[0088] The liquid raw material and the powder raw material are premixed through the feeding module 6, and under the action of the three sets of first conveying components 501, the materials in the feeding cylinder 602 continuously flow into the mixing cylinder 2 through the raw material inlet,

[0089] and then are mixed to obtain a slurry under the action of the stirring and kneading components 503;

[0090] Under the action of gravity, the slurry can fully fill each stirring and kneading component 503, thereby improving the pulping efficiency.

[0091] The slurry in the mixing cylinder 2 is conveyed to the inlet 3 through the first conveying component 501;

[0092] In addition, the first set of second conveying components 502 is arranged above the inlet 3 to prevent the slurry from overflowing and leaking to the outside of the mixing cylinder 2.

[0093] The above description is an explanation of the present invention, not a limitation of the invention. The scope defined by the present invention is referred to the claims, and any form of modification can be made within the protection scope of the present invention.

Claims

1. A vertical twin-screw mixer, characterized in that: It includes a mixing drum (2) with a hollow interior. The mixing drum (2) is arranged vertically upright. At least two main shafts are fitted inside the mixing drum (2). Mixing modules (5) are fitted on the outer circumferential surfaces of the individual main shafts. One end of an individual main shaft extends outside the mixing drum (2) and is connected to the output end of a driving motor (1). Discharge ports (3) and at least one feed port are respectively formed on the wall surface of the mixing drum (2). The feed port is for feeding powder raw materials and liquid raw materials. The driving motor (1) drives the main shaft to rotate, driving the corresponding mixing module (5) to rotate, thereby mixing the powder raw materials and liquid raw materials in the mixing drum (2) to form a slurry, and the slurry is discharged through the discharge port (3).

2. The vertical twin-screw mixer according to claim 1, characterized in that: The feed ports on the mixing drum (2) include a powder material port and several liquid material ports.

3. The vertical twin-screw mixer according to claim 2, characterized in that: The powder material port is connected to a powder feed pipe (10), and the powder raw materials enter the mixing drum (2) through the powder feed pipe (10). Each individual liquid material port is connected to the discharge end of a liquid supply system through a liquid feed pipe (9), and the liquid supply system transports the liquid raw materials into the mixing drum (2) through the liquid feed pipe (9).

4. The vertical twin-screw mixer according to claim 3, characterized in that: A feed hopper (8) is fitted on the powder feed pipe (10), and the feed hopper (8) is for feeding powder raw materials.

5. The vertical twin-screw mixer according to claim 1, characterized in that: The feed ports on the mixing drum (2) include a raw material port, and a feeding module (6) is fitted at the raw material port.

6. The vertical twin-screw mixer according to claim 5, wherein: The structure of the feeding module (6) is as follows: it includes a feeding cylinder (602) with a hollow interior. At least one conveying shaft is fitted inside the feeding cylinder (602). At least one set of feeding conveying components (605) and at least one set of feeding kneading components (606) are fitted on the outer circumferential surfaces of the individual conveying shafts. One end of an individual conveying shaft extends outside the feeding cylinder (602) and is connected to the output end of a feeding drive (601). A first feed port (603) for feeding powder raw materials and a second feed port (604) for feeding liquid raw materials are formed on the wall surface of the feeding cylinder (602). The feeding drive (601) drives the conveying shaft to rotate, driving the corresponding feeding conveying components (605) and feeding kneading components (606) to rotate, so that the feeding kneading components (606) premix the powder raw materials and liquid raw materials in the feeding cylinder (602), and the feeding conveying components (605) drive the mixed materials in the feeding cylinder (602) into the mixing drum (2).

7. The vertical twin-screw mixer according to claim 5, characterized in that: When the raw material port is above the discharge port (3) in the vertical direction, the main shafts in the mixing drum (2) rotate in the same direction. Or, When the raw material port is below the discharge port (3) in the vertical direction, the main shafts in the mixing drum (2) rotate in opposite directions.

8. A vertical twin-screw mixer according to claim 1, characterized in that: The structure of the mixing module (5) is as follows: it includes a first conveying component (501), a second conveying component (502), and a mixing kneading component (503) respectively fixed on the outer circumferential surface of the main shaft. The first conveying component (501) drives the materials in the mixing drum (2) to flow in the direction from feed to discharge. The second conveying component (502) prevents the materials in the mixing drum (2) from flowing in the direction from the feeding port to the discharging port; The stirring and kneading component (503) stirs the materials in the mixing drum (2).

9. The vertical twin-screw mixer according to claim 8, wherein: The first conveying component (501), the second conveying component (502), and the stirring and kneading component (503) all adopt a screw element structure.

10. A vertical twin-screw mixer according to claim 1, characterized in that: A supporting device (7) is cooperatively installed at the bottom of the mixing drum (2), and the supporting device (7) supports the main shaft in the mixing drum (2) to rotate stably through bearings.

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