CN112387142B

CN112387142B - Agitating unit of biax mixer

Info

Publication number: CN112387142B
Application number: CN202011196616.2A
Authority: CN
Inventors: 尹鹏
Original assignee: Hunan Chunyu Biotechnology Co ltd
Current assignee: Hunan Chunyu Biotechnology Co ltd
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2021-09-07
Anticipated expiration: 2040-10-31
Also published as: CN112387142A

Abstract

The invention discloses a stirring device of a double-shaft stirrer, which comprises a machine body shell, a grooved pulley structure, a blanking structure, a charging barrel assembly structure, a conveying structure, a material cleaning structure and a water spraying device. The stirring device of the double-shaft stirrer firstly sprays wet water to powdery materials and then stirs the powdery materials, so that on one hand, the materials on all the trough plates can be uniformly sprayed with wet water, the humidity of all the positions can be controlled, the positions can be easily controlled, on the other hand, the requirement on water quantity is not high, the water quantity of flood irrigation type water adding is saved, and the quality of related products of organic fertilizers formed by the mode is higher.

Description

Agitating unit of biax mixer

Technical Field

The invention relates to the technical field of double-shaft mixers, in particular to a stirring device of a double-shaft mixer.

Background

The double-shaft mixer is characterized in that blades which rotate reversely are arranged in a barrel body of the double-shaft mixer, and the blades form a certain angle to circularly stir the materials along the axial direction and the radial direction, so that the materials are quickly and uniformly mixed. The motor is transmitted to the speed reducer through a belt to drive the shaft to rotate. The gravity of the materials can be weakened by the speed of the shaft and the structure of the paddle, and along with the lack of the gravity, the difference of the particle size and the specific gravity of each material is neglected in the mixing process. The continuous material feeding and discharging is faster and more efficient. Even if the materials have the difference of specific gravity and particle size, the materials can achieve good mixing effect under the rapid and violent tumbling and throwing of the stirring blades which are arranged in a staggered way.

The double-shaft stirrer utilizes the synchronous rotation of the two symmetrical spiral shafts, water is added for stirring while powder materials such as dry ash are conveyed, the dry ash powder materials are uniformly humidified, the purpose that the humidified materials do not emit dry ash and can not seep water drops is achieved, and the humidity can be controlled, so that the humidified ash can be conveniently loaded on a truck for transportation or can be transferred to other conveying equipment. The equipment is mainly suitable for humidifying and mixing raw materials in the fertilizer industry, fully stirring the materials and being compatible with a conveying function.

However, the existing double-shaft mixer generally adds water above the powdery material after the powdery material is added into the body of the double-shaft mixer, the required amount of the added water is large, the powdery material at each position can not be uniformly applied with water, the humidifying efficiency is low to a certain extent, and the controllable humidity at each position is not easy to control.

Disclosure of Invention

In view of this, the present invention provides a stirring device of a dual-shaft stirrer.

In order to achieve the purpose, the invention adopts the following technical scheme:

a stirring apparatus of a double-shaft stirrer, comprising:

the device comprises a machine body shell, wherein the interior of the machine body shell is divided into a pretreatment area and a stirring area by a bin plate, the pretreatment area and the stirring area are communicated with each other by arranging a bin port on the bin plate, the bin plate is provided with a plurality of liquid passing holes in a penetrating way, and the stirring area is internally provided with 2 stirring shafts which are symmetrically arranged relative to the central axis of the machine body shell;

the grooved pulley structure comprises a driving drive plate provided with a cylindrical pin, a driven grooved pulley and a driving motor, wherein the driving motor is fixedly arranged on the bin plate, a motor shaft of the driving motor is connected with the cylindrical pin of the driving drive plate, the driven grooved pulley is driven by the cylindrical pin of the driving drive plate to rotate, and the top end and the bottom end of a central rotating shaft of the driven grooved pulley are respectively embedded in the upper wall of the machine body shell pretreatment area and the bin plate;

the blanking structure comprises a groove type containing disc, a shifting plate and a material cylinder, wherein the groove type containing disc is of a groove type disc structure, the groove type containing disc is arranged on the central rotating shaft in a penetrating mode, the peripheral wall of the groove type containing disc is fixedly connected with the inner wall of the pretreatment area of the machine body shell, the groove type containing disc is located above the driven grooved wheel, a through material passing hole is formed in the bottom panel of the groove type containing disc, the shifting plate is arranged on the central rotating shaft in a penetrating mode and is fixedly connected with the central rotating shaft, a plurality of arc-shaped notches are formed in the shifting plate, the material cylinder is detachably arranged in the arc-shaped notches, a cylinder body of the material cylinder is connected with a cylinder bottom plate in a pin mode, a first magnet block is embedded in the lower end face of the material cylinder, a first magnet block is embedded in the upper end face of the cylinder bottom plate, and the two first magnet blocks can be mutually magnetically attracted to form a closed cylinder body, an accommodating space is formed between the bottom of the charging barrel and the groove type accommodating disc at intervals, a charging pipe is arranged above an arc-shaped notch, and the charging barrel rotates to the position below the charging pipe and can be discharged into the closed barrel through the charging pipe;

the charging barrel assembly structure is positioned in the containing space and comprises a micro motor, a shifting rod and a shifting block, the micro motor is fixedly arranged at the bottom of the groove type containing disc, a motor shaft of the micro motor is fixedly connected with the shifting rod, the shifting rod of the micro motor is controlled to reciprocate, a second magnet block is arranged at the tail end shifting head of the shifting rod in a protruding mode, the shifting block is arranged on the barrel bottom plate, a second magnet block is arranged in a central groove of the shifting block, when the shifting rod rotates along with the motor shaft of the micro motor, the second magnet block of the shifting rod can be in contact with the second magnet block of the shifting block and magnetically attracted with each other, and the size of the second magnet block is smaller than that of the first magnet block;

the conveying structure comprises a driving gear, a driven gear, a gear belt and a trough plate, wherein central rotating shafts of the driving gear and the driven gear are respectively arranged in the wall of the machine shell in a penetrating manner, the driving gear and the driven gear are externally meshed with the gear belt, the trough plate is fixedly arranged on the gear belt, and the upper part of the trough plate is right opposite to the material passing hole;

the cleaning structure comprises a cam structure assembly, a torsion bar, a connecting plate, a round pin shaft, a cleaning brush and a torsion bar spring, wherein a rack of the cam structure assembly is fixedly connected with the inner wall of a pretreatment area of the machine body shell, a driven rod of the cam structure assembly is fixedly connected with the connecting plate, the cleaning brush is fixedly arranged below the torsion bar, the round pin shaft is arranged in the middle of the torsion bar and is rotationally connected into the bin plate, the torsion bar is positioned on the left side of the connecting plate and can be contacted with the connecting plate when rotating along with the round pin shaft, the torsion bar spring is fixedly sleeved at the other end of the torsion bar, and the other end of the torsion bar spring is connected with a limiting rod fixedly arranged on the bin plate;

the cam structure component comprises a rack, and a cam, a driven rod and a compression spring which are arranged on the rack, wherein the cam is fixedly arranged on the central rotating shaft in a penetrating manner, the rack is fixedly arranged on the inner wall of a pretreatment area of the machine shell, the driven rod is in contact with the contour of the cam, the compression spring is sleeved at a position, which is positioned between the driven rod and the rack, outside the driven rod, and one end, extending out of the rack, of the driven rod is fixedly connected with the link plate;

the water spraying device is fixedly arranged on the upper wall of the pretreatment area of the machine body shell and is positioned above the trough plate, and a spray head of the water spraying device is right opposite to the upper part of the trough plate groove area.

Preferably, the size of the material passing hole is not smaller than the size of the inner diameter of the barrel.

Preferably, the material bin opening is of a cylindrical structure.

Preferably, the inner side surface of the charging barrel is provided with a threaded hole, the middle part of the arc-shaped notch of the material shifting plate is also provided with a threaded hole, and the threaded holes of the charging barrel and the material shifting plate are connected with screws in an internal thread mode.

Preferably, the barrel bottom plate cover is jointed at the bottom end of the charging barrel, and the pin joint shaft is connected in the inner wall of the charging barrel through a pin joint by the barrel bottom plate.

Preferably, the area of the second magnet block is 1/2 of the first magnet block.

Preferably, a central axis of a motor shaft of the micro motor coincides with a central axis of the pin shaft.

Preferably, the material cleaning brush is a material cleaning soft brush part or a material cleaning hard brush part.

Preferably, the bin wall is embedded with a bearing, and the bearing is sleeved with a round pin shaft.

Compared with the prior art, the invention has the beneficial effects that:

(1) different from the prior double-shaft stirrer which generally adopts a mode of adding water above a powdery material after the powdery material is added into a machine body of the double-shaft stirrer, the stirring device of the double-shaft stirrer firstly sprays moisture on the powdery material and adds water, and then stirs the powdery material, so that on one hand, the material on all trough plates can be uniformly sprayed moisture and added with water, the humidity of each position can be controlled, the control is easy, on the other hand, the requirement on water quantity is not high, the water quantity of flood irrigation type water adding is saved, and the quality of the organic fertilizer related products formed by the mode is higher;

(2) the arrangement of the material cleaning structure reasonably utilizes residual materials, so that the materials are not wasted, and the whole machine body scheme device is perfected.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a portion A of FIG. 1;

FIG. 3 is a partial top view of the present invention;

fig. 4 is a side view of the chute plate of the present invention;

FIG. 5 is a schematic view of a partial structure of a sheave mechanism and a blanking structure of the present invention;

FIG. 6 is a schematic view of a partial structure of a sheave mechanism and a blanking structure of the present invention;

FIG. 7 is a schematic view of a partial structure of a Geneva gear and a blanking structure of the present invention;

FIG. 8 is an exploded schematic view of FIG. 5;

FIG. 9 is a schematic top view of the trough-type receiving tray, the material barrel, and the barrel bottom plate in the state of FIG. 5;

fig. 10 is a schematic top view of the trough-type receiving tray, the material barrel and the barrel bottom plate in the state of fig. 5.

In the figure: 1. a body case; 2. a stock bin plate; 3. a bin opening; 4. a liquid passing hole; 5. a stirring shaft; 6. an active drive plate; 7. a driven sheave; 8. a drive motor; 9. a central rotating shaft; 10. a trough-type accommodating disc; 11. a kick-out plate; 111. an arc-shaped notch; 12. a charging barrel; 13. a material passing hole; 14. A barrel floor; 15. a first magnet block; 16. a material pipe; 17. a micro motor; 18. a deflector rod; 19. shifting blocks; 20. a second magnet block; 21. a driving gear; 22. a driven gear; 23. a gear belt; 24. a chute plate; 25. a torsion bar; 26. a yoke plate; 27. a round pin shaft; 28. cleaning the material brush; 29. A frame; 30. a cam; 31. a driven lever; 32. a compression spring; 33. a pin shaft; 34. a bearing; 35. a torsion bar spring; 36. a restraining bar; 37. a water spraying device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, a stirring device of a double-shaft stirrer comprises a machine body shell 1, a grooved pulley structure, a blanking structure, a charging barrel assembly structure, a conveying structure and a material cleaning structure.

The inner part of the shell 1 of the machine body is divided into a pretreatment area and a stirring area by a material bin plate 2.

The pretreatment area and the stirring area are communicated with each other by arranging a material bin opening 3 on the material bin plate 2, and the material bin opening 3 is of a cylindrical structure. A plurality of liquid passing holes 4 are formed in the bin plate 2 in a penetrating mode, and 2 stirring shafts 5 which are symmetrically arranged relative to the central axis of the machine body shell 1 are arranged in the stirring area.

The geneva mechanism consists of a driving drive plate 6 provided with a cylindrical pin, a driven geneva wheel 7 and a drive motor 8, wherein the drive motor 8 is fixedly arranged on a feed bin plate 2, a motor shaft of the drive motor 8 is connected with the cylindrical pin of the driving drive plate 6, the driven geneva wheel 7 is driven by the cylindrical pin of the driving drive plate 6 to rotate, and the top end and the bottom end of a central rotating shaft 9 of the driven geneva wheel are respectively embedded in the upper wall of a pretreatment area of a machine body shell 1 and the feed bin plate 2.

This blanking structure includes slot type holding dish 10, switch board 11 and feed cylinder 12, slot type holding dish 10 is slotted disk structure, slot type holding dish 10 wears to locate on central pivot 9 and slot type holding dish 10 perisporium and the inner wall fixed connection in organism shell 1 preliminary treatment region, slot type holding dish 10 is located driven sheave 7's top, slot type holding dish 10 bottom panel has seted up the punishment in advance hole 13 that link up, punishment in advance hole 13's size is not less than feed cylinder 12's size to the material of waiting to stir is sent to on the feed cylinder board 24 through punishment in advance hole 13 completely.

On the switch board 11 wears to locate central pivot 9 and with central pivot 9 fixed connection, a plurality of arc breach 111 has been seted up to switch board 11, can dismantle in arc breach 111 and be equipped with feed cylinder 12, specifically: threaded hole is seted up to the medial surface of feed cylinder 12, and threaded hole is also seted up at the arc breach middle part of switch-plate 11, and the threaded hole internal thread connection of feed cylinder, switch-plate has the screw to realize that feed cylinder 12 is assembled joint with switch-plate 11 when operating condition, feed cylinder 12 can rotate along with switch-plate 11 rotates, and when feed cylinder 12 was in the work completion state, feed cylinder 12 can be dismantled to get off and maintain renewal or cleanness. The barrel of the cartridge 12 is pinned to its cartridge floor 14, specifically: the bottom plate 14 covers the bottom end of the cartridge 12, and the pin shaft 33 is connected to the inner wall of the cartridge 12 by the pin penetrating through the bottom plate.

The lower end face of the charging barrel 12 is embedded with a first magnet block 15, the upper end face of the barrel bottom plate 14 is embedded with a first magnet block 15, the two first magnet blocks 15 can be mutually magnetically attracted, an accommodating space is formed between the bottom of the charging barrel and the groove type accommodating disc 10 at intervals, and a material pipe 16 is arranged above the arc-shaped notch 111.

The feed cylinder assembly structure is located the accommodation space, feed cylinder assembly structure includes micro motor 17, driving lever 18 and shifting block 19, micro motor 17 fixes the bottom of locating slot type holding dish 10, micro motor 17's motor shaft center pin and the center pin coincidence of round pin axle 33, micro motor 17's motor shaft and driving lever 18 fixed connection, the terminal shifting block protrusion of driving lever 18 is equipped with magnet piece two 20, bobbin base 14 is equipped with shifting block 19 and is equipped with magnet piece two 20 in the central recess of shifting block (the orientation of central recess is towards the rear end), when driving lever 18 rotates along with the micro motor shaft, magnet piece two 20 of driving lever 18 can contact and mutual magnetism looks attraction with magnet piece two 20 of shifting block 19.

The size of the second magnet block 20 is smaller than the size of the first magnet block 15, and the area of the second magnet block 20 is preferably 1/2 of the first magnet block 15.

This transport structure includes driving gear 21, driven gear 22, gear belt 23 and silo board 24, driving gear 21, driven gear 22's central pivot is worn to locate the wall of organism shell 1 respectively (driving gear 21's central pivot one end is worn out the wall and is connected with conveyor motor's motor shaft, conveyor motor is fixed to be located on organism shell 1, not shown in the figure), driving gear 21, driven gear 22 external toothing is equipped with gear belt 23, the fixed silo board 24 that is equipped with on the gear belt 23, silo board 24's top is just to punishment in advance hole 13.

The material cleaning structure comprises a cam structure component, a torsion bar 25, a connecting plate 26, a round pin shaft 27, a material cleaning brush 28 and a torsion bar spring 35, wherein the cam structure component comprises a rack 29, a cam 30, a driven rod 31 and a compression spring 32, the rack 29 is fixedly arranged on the inner wall of a pretreatment area of the machine body shell 1, the cam 30 is fixedly arranged on a central rotating shaft 9 of the driven sheave 7 in a penetrating manner, the driven rod 31 is in contour contact with the cam 30, the compression spring 32 is sleeved at a position, between the driven rod 31 and the rack 29, outside the driven rod 31, and one end, extending out of the rack 29, of the driven rod 31 is fixedly connected with the connecting plate 26.

A material cleaning brush 28 is fixedly arranged below the torsion bar 25, and the material cleaning brush 28 is a material cleaning soft brush part or a material cleaning hard brush part. Torsion bar 25 middle part is equipped with round pin axle 27 and round pin axle 27 rotates and connects in the feed bin board, specifically: the wall of the silo plate 2 is embedded with a bearing 34, a round pin 27 is sleeved in the bearing 34, the round pin 27 can rotate in the bearing 34, the torsion bar 25 is positioned on the left side of the link plate 26, one end of the torsion bar 25 can be contacted with the link plate 26 when rotating along with the round pin 27, a torsion bar spring 35 is sleeved and fixed at the other end of the torsion bar 25, and the other end of the torsion bar spring 35 is fixedly connected with a limiting rod 36 on the silo plate 2.

The water spraying device 37 is fixedly arranged on the upper wall of the pretreatment area of the machine body shell 1, the water spraying device 37 is positioned above the trough plate 24, and the spray head of the water spraying device 37 is right opposite to the upper part of the area in the trough plate 24. It should be noted that the water spraying device 37 may be a common water spraying device on the market, and can normally supply water, discharge water, and discharge water from the spray header.

The working principle of the invention is as follows:

a motor shaft of the driving motor 8 is connected with a cylindrical pin of the driving dial 6, when the driving motor 8 normally works, the driving dial 6 is driven by the driving motor 8 to rotate, the driven grooved pulley 7 and a central rotating shaft 9 thereof are driven by the cylindrical pin of the driving dial 6 to rotate, the material shifting plate 11 is driven by the central rotating shaft 9 to rotate, the material cylinder 12 is driven by the material shifting plate 11 to rotate, and the peripheral wall of the groove type containing plate 10 is fixedly connected with the inner wall of a pretreatment area of the machine shell 1 and does not rotate along with the peripheral wall;

when the driving motor 8 works and the charging barrel 12 rotates to the state shown in fig. 6, the barrel bottom plate 14 covers the bottom end of the barrel body of the charging barrel 12, and the two magnet blocks one 15 can be mutually and magnetically attracted to form a closed barrel body, as shown in fig. 9;

when the material barrel 12 rotates to the state shown in fig. 7, the barrel bottom plate 14 and the material barrel 12 still form a closed barrel body at the moment, and the material is discharged into the closed barrel body through the material pipe 16 (the material pipe 16 can be arranged on an external machine body), so that the material feeding is completed;

when the charging barrel 12 rotates to the state shown in fig. 5, at this time, the micro motor 17 works, a motor shaft of the micro motor 17 drives the shift lever 18 to rotate, when the shift lever 18 rotates to the position of the shift block 19, the two magnet blocks 20 contact and magnetically attract each other, and then the shift lever 18 drives the barrel bottom plate 14 to rotate along the pin shaft 33 until the barrel bottom plate 14 is no longer covered at the barrel bottom end of the charging barrel 12, so as to form a hollow barrel, as shown in fig. 10, the powdery material in the charging barrel 12 also falls into the material passing hole 13, so as to complete discharging, the powdery material enters the chute plate 24, the powdery material on the chute plate 24 is conveyed and is sprayed with water through the water spraying device 37, and finally falls into the stirring area through the bin port 3 to be stirred;

in the process, the shift lever 18 of the micro motor 27 is controlled to reciprocate, after the discharging is completed, the motor shaft of the micro motor 27 rotates in the opposite direction, at the moment, the two magnet blocks two 20 still contact and magnetically attract each other until the barrel bottom plate 14 covers the barrel bottom end of the barrel 12, the two magnet blocks one 15 can be magnetically attracted to each other to form a closed barrel, the motor shaft of the micro motor 27 continues to rotate in the opposite direction, and as the size of the magnet block two 20 is smaller than that of the magnet block one 15, the magnetic attraction force is smaller, at the moment, the barrel bottom plate 14 still covers the barrel bottom end of the barrel 12, and the shift lever 18 and the shift lever 19 are separated from the magnetic attraction, as shown in fig. 10, the reassembling of the barrel 12 and the barrel bottom plate 14 is completed, and the process is repeated;

the material cleaning structure is an additional functional part, in the discharging process and the material conveying process, the situation that powder materials and spray wet water fall onto the bin plate 2 inevitably occurs, the situation that the bin plate 2 is dirty and wasted is not processed, the cam 30 rotates under the action of the central rotating shaft 9, the driven rod 31 is in contact with the contour of the cam 30, the driven rod 31 is driven by the cam 30 to do telescopic motion, the torsion rod 25 is driven by the driven rod 31 to rotate along the round pin shaft 27, the material cleaning brush 28 is driven by the torsion rod 25 to complete the mixing of the powder materials and the spray wet water falling onto the bin plate 2, and material water is formed and flows into a stirring area through the material passing hole 13; when the driven rod 31 contracts, the torsion bar 25 is driven by the restoring force of the torsion bar spring 35 to return to the original position, so that the torsion bar 25 performs reciprocating rotation, and the cleaning brush 28 performs reciprocating rotation cleaning work.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides an agitating unit of biax mixer which characterized in that includes:

the grooved pulley structure consists of a driving drive plate provided with a cylindrical pin, a driven grooved pulley and a driving motor, wherein the driving motor is fixedly arranged on the bin plate, a motor shaft of the driving motor is connected with the cylindrical pin of the driving drive plate, the driven grooved pulley is driven by the cylindrical pin of the driving drive plate to rotate, and the top end and the bottom end of a central rotating shaft of the driven grooved pulley are respectively embedded in the upper wall of the machine body shell pretreatment area and the bin plate;

when discharging, the micro motor works, a motor shaft of the micro motor drives the shifting lever to rotate, when the shifting lever rotates to the position of the shifting block, the two magnet blocks are contacted and magnetically attracted with each other, the shifting lever drives the barrel bottom plate to rotate along the pin shaft until the barrel bottom plate is not covered at the barrel bottom end of the charging barrel any more, a hollow barrel is formed, and the powdery material in the charging barrel also falls into the material passing hole to finish discharging;

after the discharging is finished, the motor shaft of the micro motor rotates in the opposite direction, the two magnet blocks II still contact and are mutually magnetically attracted until the barrel bottom plate covers the barrel bottom end of the charging barrel, the two magnet blocks I can be mutually magnetically attracted to form a closed barrel, the motor shaft of the micro motor continues to rotate in the opposite direction, the size of the magnet block II is smaller than that of the magnet block I, the magnetic attraction is smaller, the barrel bottom plate still covers the barrel bottom end of the charging barrel, and the deflector rod and the shifting block are separated from the magnetic attraction to finish the reassembling of the charging barrel and the barrel bottom plate;

the driven rod is driven by the cam to do telescopic motion, the torsion bar rotates along the round pin shaft of the driven rod under the contact of the driven rod, the cleaning brush is driven by the torsion bar to complete the mixing of the powdery material and the spray wet water falling on the material bin plate, the formed material water flows into the stirring area from the material passing hole, and when the driven rod contracts, the torsion bar is driven by the restoring force of a torsion bar spring to recover to the original position;

2. The stirring device of a twin-screw mixer according to claim 1, wherein the size of said passing hole is not smaller than the size of the inner diameter of said barrel.

3. The stirring device of a twin-screw mixer as defined in claim 1, wherein said hopper port has a cylindrical structure.

4. The stirring device of a dual-spindle mixer as claimed in claim 1, wherein the inner side of the charging barrel is provided with a threaded hole, the middle of the arc-shaped notch of the material-shifting plate is also provided with a threaded hole, and the threaded holes of the charging barrel and the material-shifting plate are internally threaded with screws.

5. The stirring device of a twin-screw mixer as defined in claim 1, wherein said barrel bottom plate cover is engaged with the bottom end of said barrel, and said pin shaft is inserted into the inner wall of said barrel by said barrel bottom plate.

6. The stirring device of a twin-screw mixer as defined in claim 1, wherein the area of said second magnet is 1/2 of said first magnet.

7. The stirring device of a twin-screw mixer as defined in claim 5, wherein a motor shaft center axis of said micro motor coincides with a center axis of said pin shaft.

8. The stirring device of a twin-shaft mixer as defined in claim 1, wherein said material-removing brush is a material-removing soft brush member or a material-removing hard brush member.

9. The stirring device of a dual-shaft mixer as claimed in claim 1, wherein a bearing is embedded in the wall of the bin, and a round pin shaft is sleeved in the bearing.