CN210026229U

CN210026229U - Starch extruder

Info

Publication number: CN210026229U
Application number: CN201920561345.2U
Authority: CN
Inventors: 何麟根; 代成文
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-02-07
Anticipated expiration: 2029-04-23

Abstract

The utility model belongs to the technical field of extrusion equipment, in particular to a starch extruder; the feeding double-barrel type screw conveyor comprises a feeding double-barrel and a feeding hopper, wherein a first screw and a second screw are arranged in the feeding double-barrel, the first screw and the second screw are respectively provided with a first spiral groove and a second spiral groove which are in double-spiral forms, the spiral directions of the first spiral groove and the second spiral groove are opposite, the corresponding parts of the spiral grooves on the two screws are arranged in a mirror image manner, the first screw and the second screw are connected through a transmission mechanism, the first screw is driven to rotate by a feeding motor, the second screw is driven to rotate through the transmission mechanism, the first screw and the second screw rotate in opposite directions, a discharging barrel is fixedly arranged on the feeding double-barrel, a discharging screw is arranged in the discharging barrel, the feeding double-barrel is communicated with the discharging barrel, and the discharging screw; the utility model discloses a feed twin-screw combines ejection of compact single screw rod, can make the performance more stable, ensures that the raw materials outwards extrudes constantly to the raw materials weight of guaranteeing to extrude is the same.

Description

Starch extruder

The technical field is as follows:

the utility model belongs to the technical field of extrusion equipment, refer in particular to a starch extruder.

Background art:

with the increasing awareness of environmental protection, it is recognized that waste generated from plastic products is causing damage to the living environment of human beings. Therefore, starch-based plastics have been developed to replace plastic products.

Starch tableware is a biodegradable product, is made of starch serving as a main raw material through a high-tech production process, can be automatically degraded under natural conditions, avoids environmental pollution, saves non-renewable resources such as petroleum and the like, achieves the national standard through detection of national authoritative detection departments according to various hygienic physicochemical indexes, and is an ideal substitute of 'sterilized tableware' which is widely used in the catering market but is subject to dispute.

During the processing of the starch tableware, the starch and the fiber are mixed and then extruded from an extruder. The existing extruder is of a single-screw structure and has the defects of poor extrusion stability, uneven extrusion weight and the like.

The invention content is as follows:

the utility model aims at providing a stability is good, extrude starch extruder that weight is even.

The utility model discloses a realize like this:

a starch extruder comprises a feeding double-barrel and a feed hopper arranged at a feed inlet of the feeding double-barrel, wherein a first screw and a second screw are arranged in the feeding double-barrel, the first screw and the second screw are respectively provided with a first spiral groove and a second spiral groove in a double-spiral form, the spiral directions of the first spiral groove and the second spiral groove are opposite, the axes of the two screws are arranged in parallel, the two screws are arranged in a mirror image mode corresponding to partial spiral grooves, the two ends of the two screws are arranged on the feeding double-barrel, the first screw and the second screw are connected through a transmission mechanism, the first screw is driven to rotate by a feeding motor, the second screw is driven to rotate through the transmission mechanism, the first screw and the second screw rotate in opposite directions, a discharging barrel is fixedly arranged on the feeding double-barrel, a discharging screw is arranged in the discharging barrel, and the feeding double-barrel and the discharging barrel are arranged at the junction of the first spiral groove and the second spiral groove, The feeding end of the discharging screw rod is communicated, the discharging screw rod is driven by the discharging motor to rotate, and the feeding motor and the discharging motor are controlled by the controller.

In the starch extruder, the pitch of the second helical groove is smaller than that of the first helical groove.

In the starch extruder, the discharge screw comprises a third spiral groove and a fourth spiral groove which have the same spiral direction, the fourth spiral groove is a discharge end, the screw pitch of the fourth spiral groove is smaller than that of the third spiral groove,

in the above starch extruder, the transmission mechanism is a gear transmission mechanism, and includes a driving gear disposed on the first screw and a driven gear disposed on the second screw, and the driving gear and the driven gear are engaged for transmission, so as to realize opposite rotation of the first screw and the second screw.

In the starch extruder, the cutting motor and the cutting blade driven by the cutting motor to rotate are arranged at one end of the outer surface of the feeding double-cylinder and the outer surface of the discharging cylinder, which is positioned at the discharging port.

In the starch extruder, the outlet end of the discharging machine barrel is provided with the discharging machine head, the discharging machine head is provided with the discharging hole, and the movable range of the cutting blade covers the discharging hole.

In the above-mentioned starch extruder, the first screw and the second screw are both supported by bearings on the feed twin-cylinder.

In the starch extruder, the discharging machine barrel is fixedly arranged on the rack, the controller box is arranged on the rack, and the controller is arranged in the controller box.

In the starch extruder, the bottom of the rack is provided with a movable wheel with a brake, and the movable wheel is convenient to move.

In the starch extruder, the rack is provided with the control panel, and the control panel is connected with the controller.

Compared with the prior art, the utility model outstanding advantage is:

the utility model discloses a feed twin-screw combines ejection of compact single screw rod, can make the performance more stable, ensures that the raw materials is constantly outwards extruded to can guarantee that the raw materials weight of extruding is the same.

Description of the drawings:

fig. 1 is a front view of the present invention;

fig. 2 is a left side view of the present invention;

fig. 3 is a top view of the present invention;

fig. 4 is a partial cross-sectional view of the present invention;

fig. 5 is a top view of fig. 4.

In the figure: 1. feeding double barrels; 2. a feed hopper; 3. a first screw; 4. a second screw; 5. a first helical groove; 6. a second helical groove; 7. a feeding motor; 8. a discharging machine barrel; 9. a discharge screw; 10. a discharging motor; 11. a third helical groove; 12. a fourth helical groove; 13. a driving gear; 14. a driven gear; 15. cutting off the motor; 16. cutting off the blade; 17. a discharging machine head; 18. a bearing; 19. a support; 20. a frame; 21. a controller box; 22. a moving wheel with a brake; 23. a control panel.

The specific implementation mode is as follows:

the invention will now be further described with reference to specific embodiments, with reference to figures 1 to 5:

a starch extruder, which comprises a feeding double-cylinder 1 and a feed hopper 2 arranged at the feed inlet of the feeding double-cylinder 1, a first screw 3 and a second screw 4 are arranged in the feeding double-cylinder 1, the first screw 3 and the second screw 4 are both provided with a first spiral groove 5 and a second spiral groove 6 which are in double spiral forms, the spiral directions of the first spiral groove 5 and the second spiral groove 6 are opposite, the axes of the two screws are arranged in parallel, and the two screws are arranged in a mirror image mode corresponding to the spiral grooves of the two screws, two ends of the two screws are arranged on the feeding double-barrel 1, the first screw 3 is connected with the second screw 4 through a transmission mechanism, the first screw 3 is driven to rotate by the feeding motor 7, the second screw 4 is driven to rotate through the transmission mechanism, the first screw 3 and the second screw 4 rotate in opposite directions, and the opposite rotation means that the first screw 3 and the second screw 4 both rotate inwards. The feeding double-cylinder type screw extruder is characterized in that a discharging cylinder 8 is fixedly arranged on a feeding double-cylinder 1, a discharging screw 9 is arranged in the discharging cylinder 8, the feeding double-cylinder 1 and the discharging cylinder 8 are communicated at the joint of a first spiral groove 3 and a second spiral groove 4 of a feeding double-screw and the feeding end of the discharging screw 9, namely, discharging holes are respectively arranged on the feeding double-cylinder 1, feeding holes are arranged on the discharging cylinder 8 and correspond to the discharging holes one by one, the discharging screw 9 is driven to rotate by a discharging motor 10, and the feeding motor 7 and the discharging motor 10 are controlled by a controller.

First helicla flute 3 for the structure of uniform pitch, also can be by the part of two different pitches and constitute, wherein the pitch of the part that is close to second helicla flute 4 is less than the pitch of the part of keeping away from second helicla flute 4.

The utility model discloses a second helicla flute 6 on first screw rod 3, the second screw rod 4's spiral direction is opposite with first helicla flute 5, can ensure that starch can not carry out the technology on second helicla flute 6 and carry, can also set up the discharge gate and enter into in ejection of compact barrel 8 to leading-in to the two barrels of feed 1 of starch that carry to first helicla flute 5 and 6 handing-over departments of second helicla flute simultaneously.

Further, the pitch of the second helical groove 6 is smaller than that of the first helical groove 5, and back pressure is increased reversely.

In order to increase the back pressure, the discharging screw 9 includes a third spiral groove 11 and a fourth spiral groove 12 with the same spiral direction, the fourth spiral groove 12 is a discharging end, and the pitch of the fourth spiral groove 12 is smaller than that of the third spiral groove 11.

Drive mechanism is gear drive, including setting up driving gear 13 on first screw rod 3 and setting up driven gear 14 on second screw rod 4, driving gear 13 and the 14 meshing transmissions of driven gear realize first screw rod 3, second screw rod 4 and rotate in opposite directions.

Besides the gear transmission mechanism, a synchronous belt transmission mechanism can be adopted. The hold-in range adopts the double tooth hold-in range, sets up primary synchronization pulley on first screw rod 3, sets up from synchronous pulley on second screw rod 4, still sets up the jackshaft on feed twin-tub 1 including rotating, sets up middle synchronous pulley on the jackshaft, and the hold-in range cup joints on primary synchronization belt and middle synchronous pulley, and on the outer wall that is located the hold-in range from synchronous pulley, can also produce the effect of a tensioning to the hold-in range from synchronous pulley. The feeding motor 7 rotates to drive the first screw rod 3 to rotate, and then drives the main synchronous belt wheel to rotate, the main synchronous belt wheel drives the middle synchronous belt wheel to rotate through the synchronous belt, and due to the structure of the double-sided teeth of the synchronous belt, the slave synchronous belt wheel positioned on the outer tooth surface of the synchronous belt is also driven by the synchronous belt to rotate, and the rotating direction of the slave synchronous belt wheel is opposite to that of the main synchronous belt wheel. The first screw rod 3 and the second screw rod 4 rotate oppositely through controlling the rotating direction of the feeding motor 7. Because the structure of the present embodiment is relatively complex, the present embodiment is preferably a gear transmission mechanism.

In order to increase the strength of the tableware, fiber is added into starch, so the fiber is cut after discharging, and a cutting motor 15 and a cutting blade 16 driven by the cutting motor 15 to rotate are arranged at one end of the outer surface of the discharging cylinder 8 positioned at the discharging port. The cutting blade 16 comprises more than two blades which are uniformly distributed in the circumferential direction, the two blades are arranged in the embodiment, the extruder extrudes outwards when no blade passes through the discharge hole, and the cutting is carried out when the blades pass through.

Further, the outlet end of the discharging machine barrel 8 is provided with a discharging machine head 17, a discharging port is arranged on the discharging machine head 17, and the moving range of the cutting blade 16 covers the discharging port.

For the purpose of rotation flexibility, the first screw 3 and the second screw 4 are supported by bearings 18 on the feed twin-cylinder 1.

Discharging machine barrel 7, feed pair machine barrel 1 set firmly on frame 20 through support 19, are provided with controller case 21 on frame 20, and the controller setting is in controller case 21.

For the convenience of movement, the bottom of the frame 20 is provided with brake moving wheels 22, and the number of the brake moving wheels 22 is generally four.

Be provided with control panel 23 in the frame 20, control panel 23 is connected with the controller, can set up or modify feed motor 7, ejection of compact motor 10's parameter in order to reach the processing needs through control panel 23.

The working principle of the utility model is as follows:

with starch, fibre from feeder hopper 2 feeding, starch, fibre enter into and carry out intensive mixing on first screw rod 3, the second screw rod 4 to carry forward, when the handing-over department of the raw materials after mixing through first helicla flute 3 and second helicla flute 4, further extrude by ejection of compact screw rod 9 in entering into ejection of compact barrel 8, increase the backpressure through fourth helicla flute 12, outwards extrude, cut off the fibre through cutting off blade 16 at last.

The utility model discloses a can increase stability, ensure that the raw materials weight of extruding at every turn is the same.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A starch extruder, characterized in that: comprises a feeding double-barrel (1) and a feeding hopper (2) arranged at a feeding port of the feeding double-barrel (1), wherein a first screw (3) and a second screw (4) are arranged in the feeding double-barrel (1), the first screw (3) and the second screw (4) are respectively provided with a first spiral groove (5) and a second spiral groove (6) which are in double-spiral form, the spiral directions of the first spiral groove (5) and the second spiral groove (6) are opposite, the axes of the two screws are arranged in parallel, the corresponding parts of the spiral grooves on the two screws are arranged in a mirror image manner, two ends of the two screws are arranged on the feeding double-barrel (1), the first screw (3) and the second screw (4) are connected through a transmission mechanism, the first screw (3) is driven to rotate by a motor feeding (7), the second screw (4) is driven to rotate by the transmission mechanism, the first screw (3) and the second screw (4) rotate oppositely, the feeding double-cylinder (1) is fixedly provided with a discharging cylinder (8), a discharging screw (9) is arranged in the discharging cylinder (8), the feeding double-cylinder (1) and the discharging cylinder (8) are communicated at the joint of a first spiral groove (5) and a second spiral groove (6) of the feeding double-screw and the feeding end of the discharging screw (9), the discharging screw (9) is driven to rotate by a discharging motor (10), and the feeding motor (7) and the discharging motor (10) are controlled by a controller.

2. A starch extruder as claimed in claim 1, wherein: the pitch of the second spiral groove (6) is smaller than that of the first spiral groove (5).

3. A starch extruder as claimed in claim 1, wherein: the discharging screw (9) comprises a third spiral groove (11) and a fourth spiral groove (12) which are the same in spiral direction, the fourth spiral groove (12) is a discharging end, and the screw pitch of the fourth spiral groove (12) is smaller than that of the third spiral groove (11).

4. A starch extruder as claimed in claim 1, 2 or 3, wherein: the transmission mechanism is a gear transmission mechanism and comprises a driving gear (13) arranged on the first screw rod (3) and a driven gear (14) arranged on the second screw rod (4), and the driving gear (13) and the driven gear (14) are in meshed transmission to realize opposite rotation of the first screw rod (3) and the second screw rod (4).

5. A starch extruder as claimed in claim 1, wherein: and a cutting motor (15) and a cutting blade (16) driven by the cutting motor (15) to rotate are arranged at one end of the outer surface of the discharging machine barrel (8) positioned at the discharging port.

6. A starch extruder as claimed in claim 5, wherein: the outlet end of the discharging machine barrel (8) is provided with a discharging machine head (17), the discharging machine head (17) is provided with a discharging hole, and the moving range of the cutting blade (16) covers the discharging hole.

7. A starch extruder as claimed in claim 1, wherein: the first screw (3) and the second screw (4) are both supported on the feeding double cylinder (1) through bearings (18).

8. A starch extruder as claimed in claim 1, wherein: the feeding double-cylinder (1) and the discharging cylinder (8) are fixedly arranged on the rack (20), the rack (20) is provided with a controller box (21), and the controller is arranged in the controller box (21).

9. A starch extruder as claimed in claim 8, wherein: the bottom of the frame (20) is provided with a movable wheel (22) with a brake, which is convenient to move.

10. A starch extruder as claimed in claim 8 or 9, wherein: the rack is provided with a control panel (23), and the control panel (23) is connected with the controller.