CN216732921U

CN216732921U - Feeding system of double-screw extruder

Info

Publication number: CN216732921U
Application number: CN202123242233.7U
Authority: CN
Inventors: 肖浩; 周良霄; 李�杰; 周文
Original assignee: Shanghai Pret Bantai Material Technology Co ltd
Current assignee: Shanghai Pret Bantai Material Technology Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-06-14
Anticipated expiration: 2031-12-22

Abstract

The utility model discloses a feeding system of a double-screw extruder, which belongs to the technical field of extruders and comprises a double-screw extruder body, wherein the double-screw extruder body is communicated with a feeding hopper, an oral expanding cavity and an even cavity are arranged in the feeding hopper, the left side wall and the right side wall of the oral expanding cavity are respectively articulated with a first guide plate and a second guide plate, and the upper surfaces of the first guide plate and the second guide plate are fixedly provided with magnet plates; this scheme can adsorb the metal piece of adulteration in the material through the magnet board on first baffle and the second baffle, not only can improve the plastics quality of processing, but also greatly avoided metal piece to this internal twin-screw of twin-screw extruder and other parts to cause the influence, can sieve the material through filtering the sieve, can make impurity separations such as thoughtlessly great branches and leaves stick wood in the material come out, very big improvement the purity of material, can make the upper and lower vibration of filtering the sieve through actuating mechanism, can improve the screening effect of filtering the sieve.

Description

Feeding system of double-screw extruder

Technical Field

The utility model relates to an extruder technical field, more specifically say, relate to double screw extruder's feed system.

Background

The double-screw extruder mainly depends on the pressure and the shearing force generated by the rotation of the two screws, so that materials can be fully plasticized and uniformly mixed and are molded through a neck mold. The double screw extruder is originally produced in food and plastic processing, the application range of the double screw extruder is continuously expanded in recent years, and the double screw extruder is widely applied to the blending modification of filling, reinforcing, toughening and the like of high polymer materials such as plastics, engineering plastics, thermoplastic rubber and the like, and the processing fields of special fibers, special adhesives and the like. The plastic strands are typically formed by feeding the mixed plastic masterbatch from a hopper (hopper) into a barrel, where a twin screw engaged pushes the plastic forward, and then extruded through an extrusion head.

The utility model discloses a chinese utility model discloses a double screw extruder cuts material device for patent that grant publication number is CN214448372U, including the main part, the fixed surface of main part is connected with the control box, and the top fixedly connected with extrusion storehouse of main part, the side in extrusion storehouse have seted up the discharge gate, and the side fixedly connected with in extrusion storehouse goes out the magazine. The utility model discloses an effect of cutter, spout and slider for the material can convenient effectual cutting the material when being extruded, thereby makes things convenient for workman's operation.

When the double-screw extruder device is used, plastic master batches are put into the double-screw extruder device through the feed hopper, and metal scraps may be doped and mixed in the production and feeding processes of the double-screw extruder device, so that the quality of plastic processed by the double-screw extruder is influenced, the double screws are influenced, and the service life of the double-screw extruder device is shortened; meanwhile, the added plastic master batch can be mixed with a plurality of larger impurities such as branches, leaves, sticks and the like, and the processing and production quality of plastic products can be greatly reduced.

Therefore, it is necessary to provide a feeding system of a twin-screw extruder to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a double screw extruder's feed system is in order to solve above-mentioned technical problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

double screw extruder's feed system, including the double screw extruder body, the intercommunication has the feeding hopper on the double screw extruder body, it expands oral cavity and even chamber to have seted up in the feeding hopper, it has first baffle and second baffle to articulate respectively to expand the lateral wall about the oral cavity, fixed surface installs the magnet board on first baffle and the second baffle, the first spring of fixedly connected with between the lower extreme of first baffle and second baffle and the inner wall that expands the oral cavity, the lateral wall that expands the oral cavity articulates there is clear bin gate, even intracavity is equipped with the filtration sieve, it is connected with installation mechanism to filter between both ends all and the inner wall in even chamber about the sieve, the rear wall of feeding hopper is equipped with and is used for driving the actuating mechanism who filters the sieve vibration.

Further, installation mechanism is including being fixed in the mounting panel of even intracavity wall, the outer wall fixedly connected with a plurality of second springs of filtering the sieve, the one end fixedly connected with limit sliding plate that filters the sieve is kept away from to the second spring, limit sliding plate sliding connection is in the mounting panel inner wall.

Further, actuating mechanism is including fixed mounting in the motor of feeding hopper, the output fixedly connected with master gear of motor, it is connected with first pivot to rotate between the wall around the even chamber, first pivot outer wall fixedly connected with is located the first cam of filtering the sieve below, the rear end outer wall fixedly connected with of first pivot and the driven gear of master gear meshing adaptation.

Furthermore, the front wall and the rear wall of the flaring cavity are rotatably connected with a second rotating shaft, a second cam positioned between the first guide plate and the second guide plate is fixedly mounted on the outer wall of the second rotating shaft, a linkage assembly matched with the driving mechanism is arranged on the outer wall of the feeding hopper, and a traction rope is fixedly connected between the first guide plate and the second guide plate.

Furthermore, the linkage assembly comprises belt wheels fixedly connected to the rear end of the second rotating shaft, belt wheels are fixedly mounted on the outer wall of the rear end of the first rotating shaft, and a belt is connected between the belt wheels in a transmission mode.

Furthermore, the upper end and the lower end of the limiting sliding plate are both fixedly provided with limiting bulges, and the inner wall of the mounting plate is provided with limiting sliding chutes matched with the limiting bulges in a sliding manner.

Furthermore, the inner wall of the uniform cavity is fixedly connected with a stop lever, and the front end face of the feeding hopper is provided with a cleaning door.

Compared with the prior art, the utility model has the advantages of:

according to the scheme, the magnet plates on the first guide plate and the second guide plate can adsorb metal fragments doped in the material, so that the amount of the metal fragments in the material can be greatly reduced, the quality of processed plastics can be improved, the subsequent use effect of the processed material is facilitated, and the word of the product can be improved; but also greatly avoids the influence of metal scraps on the double screws and other components in the double screw extruder body, and improves the service life of the double screw extruder body. Can sieve the material through filtering the sieve, can make some thoughtlessly in the material come out like great impurity separations such as branches and leaves stick wood, and other materials then can pass and filter the sieve and fall and normally process, through the very big purity that has improved the material of filter sieve board, reduced impurity content, and then greatly improved the qualification rate and the quality of the plastics product of follow-up processing, can provide higher income for the mill. Simultaneously can make the continuous vibration from top to bottom that filters the sieve through actuating mechanism, can improve the screening effect that filters the sieve, can greatly prevent to filter the possibility that the material was piled up on the sieve simultaneously, further improvement the result of use and the life that filter the sieve to and improve the processing effect and the efficiency of follow-up material.

Drawings

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

FIG. 2 is a schematic cross-sectional axial side view of the feeding hopper of the present invention;

FIG. 3 is a schematic view of the front view of the feeding hopper of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3;

FIG. 5 is a schematic view of a partial structure of the mounting plate of the present invention;

FIG. 6 is a schematic view of the rear axial side structure of the feeding hopper of the present invention;

fig. 7 is a rear view of the feeding hopper of the present invention;

fig. 8 is a schematic view of the internal shape structure of the feeding hopper after the material cleaning door of the present invention is opened.

The numbering in the figures illustrates:

1. a twin screw extruder body; 2. a feeding hopper; 3. expanding the oral cavity; 4. a homogenization cavity; 5. a first guide plate; 6. a second guide plate; 7. a magnet plate; 8. a first spring; 9. a material cleaning door; 10. filtering the sieve plate; 11. mounting a plate; 12. a second spring; 13. a limiting sliding plate; 14. a limiting chute; 15. a motor; 16. A main gear; 17. a first rotating shaft; 18. a first cam; 19. a driven gear; 20. a second rotating shaft; 21. A second cam; 22. a pulley; 23. a belt; 24. a pulling rope; 25. a stop lever.

Detailed Description

The first embodiment is as follows:

referring to fig. 1-3 and 8, the feeding system of the twin-screw extruder comprises a twin-screw extruder body 1, a feeding hopper 2 is communicated with the twin-screw extruder body 1, an opening expanding cavity 3 and an even cavity 4 are formed in the feeding hopper 2, a first guide plate 5 and a second guide plate 6 are respectively hinged to the left side wall and the right side wall of the opening expanding cavity 3, magnet plates 7 are fixedly mounted on the upper surfaces of the first guide plate 5 and the second guide plate 6, a first spring 8 is fixedly connected between the lower ends of the first guide plate 5 and the second guide plate 6 and the inner wall of the opening expanding cavity 3, a material cleaning door 9 is hinged to the side wall of the opening expanding cavity 3, a filter sieve plate 10 is arranged in the even cavity 4, mounting mechanisms are connected between the left end and the right end of the filter sieve plate 10 and the inner wall of the even cavity 4, and a driving mechanism for driving the filter sieve plate 10 to vibrate is arranged on the rear wall of the feeding hopper 2. When the plastic master batch processing device is used, mixed plastic master batch materials are put into the feeding hopper 2, and metal fragments doped in the materials can be adsorbed through the magnet plates 7 on the first guide plate 5 and the second guide plate 6, so that the amount of the metal fragments in the materials can be greatly reduced, the quality of processed plastics can be improved, the subsequent use effect of the processed materials can be facilitated, and the word of the product can be improved; but also greatly avoids the influence of metal scraps on the double screws and other components in the double-screw extruder body 1, and improves the service life of the double-screw extruder body 1. When the material falls on first baffle 5 and second baffle 6, can drive first spring 8 slight motion simultaneously, can improve the derivation effect of material on first baffle 5 and the second baffle 6. The material can continue to fall on filtering sieve plate 10, can sieve the material through filtering sieve plate 10, can make impurity separations such as some branches and leaves stick wood thoughtlessly in the material, and other materials then can pass filtering sieve plate 10 and fall and normally process, through filtering sieve plate 10 very big improvement the purity of material, impurity content has been reduced, and then the qualification rate and the quality of the plastic products of follow-up processing have greatly been improved, can provide higher income for the mill. Simultaneously can make the continuous vibration from top to bottom that filters sieve 10 through actuating mechanism, can improve the screening effect that filters sieve 10, can greatly prevent to filter the possibility that the material was piled up on the sieve 10 simultaneously, further improvement the result of use and the life of filtering sieve 10 to and the processing effect and the efficiency of improvement follow-up material.

After processing finishes, the accessible is with the clear bin gate 9 to flaring chamber 3 internal rotation, as shown in fig. 8, then cuts off the power supply with magnet board 7, and the metal piece on first baffle 5 and the second baffle 6 can be arranged this moment to outside discharging the hopper 2 through clear bin gate 9, can be convenient handle the metal piece, convenient subsequent collection clearance improves the result of use of this device. The installation mechanism can facilitate the taking and the placing of the filtering sieve plate 10 and the subsequent cleaning, and improve the use effect and the service life of the device.

Referring to fig. 4 and 5, the mounting mechanism includes a mounting plate 11 fixed on the inner wall of the uniform cavity 4, the outer wall of the filter sieve plate 10 is fixedly connected with a plurality of second springs 12, one end of each second spring 12 far away from the filter sieve plate 10 is fixedly connected with a limit sliding plate 13, the limit sliding plates 13 are slidably connected to the inner wall of the mounting plate 11, the upper and lower ends of each limit sliding plate 13 are fixedly provided with limit protrusions, and the inner wall of the mounting plate 11 is provided with limit chutes 14 in sliding fit with the limit protrusions. Can be with filtering sieve 10 through limit sliding plate 13 along the 14 roll-offs of limit chute, can take out and filter sieve 10 clean it, make things convenient for the follow-up cleanness of filtering sieve 10, improve the result of use and the life-span of device, the back of finishing in the clearance, can be equally through the limit sliding plate 13 that will filter sieve 10 along limit chute 14 slide in the mounting panel 11 can.

Referring to fig. 2-3 and fig. 6-7, the driving mechanism includes a motor 15 fixedly installed on the feeding hopper 2, a main gear 16 is fixedly connected to an output end of the motor 15, a first rotating shaft 17 is rotatably connected between the front and rear walls of the homogenizing chamber 4, a first cam 18 positioned below the filtering sieve plate 10 is fixedly connected to an outer wall of the first rotating shaft 17, and a driven gear 19 engaged with the main gear 16 is fixedly connected to an outer wall of the rear end of the first rotating shaft 17. The starter motor 15 drives the main gear 16 to rotate, the first rotating shaft 17 can be driven to rotate through the cooperation with the driven gear 19, the first rotating shaft 17 can drive the first cam 18 to rotate, the continuous rotation through the first cam 18 can be intermittently collided with the filtering sieve plate 10, and then the intermittent alternation enables the filtering sieve plate 10 to vibrate up and down through the second spring 12, the continuous up-and-down vibration through the filtering sieve plate 10 can improve the screening effect of the filtering sieve plate 10, meanwhile, the possibility of material accumulation on the filtering sieve plate 10 can be greatly prevented, the use effect and the service life of the filtering sieve plate 10 are further improved, and the processing effect and the efficiency of subsequent materials are improved.

Referring to fig. 2-3 and fig. 6-7, the front and rear walls of the flaring cavity 3 are rotatably connected with a second rotating shaft 20, a second cam 21 positioned between the first guide plate 5 and the second guide plate 6 is fixedly installed on the outer wall of the second rotating shaft 20, a linkage assembly matched with the driving mechanism is arranged on the outer wall of the feeding hopper, a pulling rope 24 is fixedly connected between the first guide plate 5 and the second guide plate 6, the linkage assembly comprises a belt pulley 22 fixedly connected to the rear end of the second rotating shaft 20, a belt pulley 22 is also fixedly installed on the outer wall of the rear end of the first rotating shaft 17, and a belt 23 is connected between the two belt pulleys 22 in a transmission manner. When the first rotating shaft 17 rotates, the belt wheel 22 on the first rotating shaft can be driven to rotate, the second rotating shaft 20 is driven to rotate through the cooperation of the belt 23, the second rotating shaft 20 can drive the second cam 21 to rotate, the second cam 21 can intermittently collide with the first guide plate 5, so that the first guide plate 5 can be driven to continuously vibrate up and down through the cooperation of the first spring 8, and the first guide plate 5 can drive the second guide plate 6 to vibrate through the traction rope 24, on one hand, the vibration of the first guide plate 5 and the second guide plate 6 can improve the falling speed of materials from the first guide plate 5 and the second guide plate 6, prevent more materials from being accumulated together, and improve the blanking effect; on the other hand, when the cleaning door 9 is opened and the magnet plate 7 is powered off, the vibration of the first guide plate 5 and the second guide plate 6 can improve the effect of dropping the metal chips of the magnet plate 7, and also improve the dropping speed, avoid accumulation and improve the effect of discharging the metal chips.

Referring to fig. 2-3, the inner wall of the uniform cavity 4 is fixedly connected with a stop lever 25, and the front end face of the feeding hopper 2 is provided with a cleaning door. After the processing is finished, the cleaning door 9 is rotated towards the flaring cavity 3, the blocking rod 25 can block the cleaning door 9, the cleaning door 9 is limited, and the filtering sieve plate 10 can be conveniently taken out to be cleaned by opening the cleaning door.

The working principle is as follows: when using double screw extruder body 1 to add man-hour, at first throw into feeding hopper 2 with the plastics master batch material after mixing, at first the material can get into on first baffle 5 and the second baffle 6 of expanding oral cavity 3, can adsorb the metal piece of doping in the material through magnet board 7 on first baffle 5 and the second baffle 6, and still greatly avoided metal piece to cause the influence to double screw and other parts in the double screw extruder body 1, improved double screw extruder body 1's life. The material through first baffle 5 and second baffle 6 can continue to fall down to filter sieve 10 on, can sieve the material through filtering sieve 10, can be so that thoughtlessly have impurity separations such as branches and leaves stick wood in the material, and other materials then can pass and filter sieve 10 and fall and normally process, through the very big purity that has improved the material of filtering sieve 10. Meanwhile, the motor 15 is started to drive the main gear 16 to rotate, the first rotating shaft 17 can be driven to rotate through the cooperation with the driven gear 19, the first rotating shaft 17 can drive the first cam 18 to rotate, the first cam 18 can intermittently collide with the filtering sieve plate 10 through continuous rotation of the first cam 18, and then the filtering sieve plate 10 can intermittently and alternately vibrate up and down through the second spring 12.

After the machining is finished, the cleaning door 9 can be rotated towards the flaring cavity 3 and is blocked by the stop rod 25, as shown in fig. 8, then the magnet plate 7 is powered off, and the metal chips on the first guide plate 5 and the second guide plate 6 are discharged and are discharged out of the feeding hopper 2 through the cleaning door 9. And meanwhile, the cleaning door is opened, the filtering sieve plate 10 can slide out along the limiting sliding groove 14 through the limiting sliding plate 13, the filtering sieve plate 10 can be taken out and cleaned, and after cleaning is finished, the limiting sliding plate 13 of the filtering sieve plate 10 can slide into the mounting plate 11 along the limiting sliding groove 14.

When the first rotating shaft 17 rotates, the belt wheel 22 on the first rotating shaft can be driven to rotate, the second rotating shaft 20 is driven to rotate through the cooperation of the belt 23, the second rotating shaft 20 can drive the second cam 21 to rotate, the second cam 21 can also collide with the first guide plate 5 intermittently, so that the first guide plate 5 can be driven to vibrate up and down through the cooperation of the first spring 8, and the first guide plate 5 vibrates to drive the second guide plate 6 to vibrate through the pulling rope 24.

Claims

1. The feeding system of the double-screw extruder comprises a double-screw extruder body and is characterized in that: the double screw extruder body is last to be communicated with the feeding hopper, it expands oral cavity and even chamber to have seted up in the feeding hopper, it has first baffle and second baffle to articulate respectively to expand the lateral wall about the oral cavity, fixed surface installs the magnet board on first baffle and the second baffle, the lower extreme of first baffle and second baffle and expand the first spring of fixedly connected with between the inner wall in oral cavity, the lateral wall that expands the oral cavity articulates there is the clear bin gate, even intracavity is equipped with the filtration sieve, it all is connected with installation mechanism with the inner wall in even chamber to filter the both ends about the sieve, the back wall of feeding hopper is equipped with and is used for driving the actuating mechanism who filters the sieve vibration.

2. The feeding system of the twin-screw extruder according to claim 1, wherein: the installation mechanism is including being fixed in the mounting panel of even intracavity wall, the outer wall fixedly connected with a plurality of second springs of filtering the sieve, the one end fixedly connected with limit sliding plate of filtering the sieve is kept away from to the second spring, limit sliding plate sliding connection is in the mounting panel inner wall.

3. The feeding system of the twin-screw extruder according to claim 2, wherein: the driving mechanism comprises a motor fixedly installed on the feeding hopper, a main gear is fixedly connected to the output end of the motor, a first rotating shaft is rotatably connected between the front wall and the rear wall of the uniform cavity, a first cam located below the filtering sieve plate is fixedly connected to the outer wall of the first rotating shaft, and a driven gear meshed with the main gear and matched with the outer wall of the rear end of the first rotating shaft.

4. The feeding system of a twin-screw extruder according to claim 3, characterized in that: the front wall and the rear wall of the flaring cavity are rotatably connected with a second rotating shaft, a second cam positioned between the first guide plate and the second guide plate is fixedly mounted on the outer wall of the second rotating shaft, a linkage assembly matched with the driving mechanism is arranged on the outer wall of the feeding hopper, and a traction rope is fixedly connected between the first guide plate and the second guide plate.

5. The feeding system of a twin-screw extruder according to claim 4, characterized in that: the linkage assembly comprises belt wheels fixedly connected to the rear end of the second rotating shaft, belt wheels are fixedly mounted on the outer wall of the rear end of the first rotating shaft, and a belt is in transmission connection between the belt wheels.

6. The feeding system of a twin-screw extruder according to claim 2, characterized in that: the upper end and the lower end of the limiting sliding plate are both fixedly provided with limiting bulges, and the inner wall of the mounting plate is provided with limiting sliding chutes matched with the limiting bulges in a sliding manner.

7. The feeding system of a twin-screw extruder according to claim 3, characterized in that: the inner wall of the uniform cavity is fixedly connected with a stop lever, and the front end face of the feeding hopper is provided with a cleaning door.