CN210634088U

CN210634088U - Feeding device of double-screw extruder for plastic recycling and granulating

Info

Publication number: CN210634088U
Application number: CN201921500251.0U
Authority: CN
Inventors: 苏伟; 张润涵; 苏建东; 苏建设
Original assignee: Jieshou Yaxin Plastic Technology Co Ltd
Current assignee: Jieshou Yaxin Plastic Technology Co Ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-05-29
Anticipated expiration: 2029-09-10

Abstract

The utility model discloses a feeding device of a double-screw extruder for plastic recovery granulation, which comprises a feed hopper and a screening bin, wherein the bottom of the feed hopper is provided with a feed pipe, one end of the feed pipe, which is far away from the feed hopper, is connected to one side of the screening bin, the top of the screening bin is provided with a motor in a penetrating way, the output shaft of the motor is connected with a stirring shaft, the bottom of the stirring shaft is provided with a plurality of stirring blades, one side of the screening bin is provided with a waste material outlet, the bottom of the waste material outlet is connected with a waste material box, the bottom of the screening bin is provided with a sieve plate, unmelted plastic particles with larger volume and solid unmelted impurities in the melted recovered plastic are intercepted, a pushing block is pushed by an air cylinder to push the unmelted plastic particles intercepted on the sieve plate to discharge the feeding device, thereby avoiding large particles from causing, the arrangement of the shunt pipe improves the working efficiency of the feeding device.

Description

Feeding device of double-screw extruder for plastic recycling and granulating

Technical Field

The utility model relates to a feeding device field, concretely relates to plastics are retrieved double screw extruder's for granulation feeding device.

Background

Twin screw machines were originally used for processing to produce food and plastics and have a wide range of applications. The core of the twin-screw machine is the twin-screw machine shaft. The double-screw mechanism has the advantages of strong transmission performance, strong mixing capability, good self-cleaning performance, high efficiency and the like.

Patent application No. 201821414645.X discloses a feeding device of a double-screw extruder, which comprises a feeding hopper, wherein a striker plate is fixedly connected to the inner surface of the feeding hopper, a blanking groove is formed in the top of the striker plate, and a blanking hole communicated with the bottom of the striker plate is formed in the inner surface of the bottom of the blanking groove. The device has guaranteed that unloading speed and unloading volume are stable, can reach the effect that can not the ejection of compact too much, has avoided the more normal feed work of influence of feed to reach the effect that promotes the feed quality, still have following weak point: (1) a large amount of large-particle unmelted plastic and solid unmelted impurities exist in the melted recycled plastic entering the feeding device through the feeding hole, so that an internal pipeline of the feeding device is easy to block, and large particles cause certain mechanical abrasion to the feeding device; (2) the temperature of the molten recycled plastic is reduced in the conveying process and the molten recycled plastic begins to solidify, so that the feeding device is easy to block; (3) the feeding device can only feed one extruder, and has low working efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plastics are retrieved double screw extruder's for granulation feeding device has solved following technical problem: (1) the sieve plate is arranged at the bottom of the screening bin, unmelted plastic particles with larger volume and solid unmelted impurities in the melted recycled plastic are intercepted, the cylinder pushes the push block to push the unmelted plastic particles intercepted on the sieve plate to be discharged out of the feeding device, and the problems that large particles of unmelted plastic and solid unmelted impurities in the melted recycled plastic block the feeding device and cause mechanical abrasion to the feeding device are solved; (2) the heating wires are arranged outside the diversion channel, the heat preservation layer is arranged outside the heating wires, and the vibration motor is arranged, so that the problem that the feeding device is blocked due to the fact that the molten recycled plastic is solidified and attached to the diversion channel is solved; (3) the bottom of the diversion channel is connected with a diversion pipe, the bottom of the diversion pipe can be provided with two conveying pipes, two double-screw extruders for plastic recycling and granulation can be fed and supplied simultaneously through the two conveying pipes, and the problem of low working efficiency of the feeding device is solved.

The purpose of the utility model can be realized by the following technical scheme:

a feeding device of a double-screw extruder for plastic recovery granulation comprises a feeding hopper and a screening bin, wherein a feeding pipe is installed at the bottom of the feeding hopper, one end, away from the feeding hopper, of the feeding pipe is connected to one side of the screening bin, a motor is installed at the top of the screening bin, an output shaft of the motor is connected with a stirring shaft, a plurality of stirring blades are installed at the bottom end of the stirring shaft, a waste material outlet is formed in one side, away from the feeding pipe, of the screening bin, the bottom of the waste material outlet is connected with a waste material box, a screening plate is installed at the bottom of the screening bin, a plurality of leakage holes are formed in the screening plate, a pushing block is arranged at the top of the;

the sieve plate is characterized in that a diversion channel is installed at the bottom of the sieve plate, a diversion pipe is connected to the bottom end of the diversion channel, a heating wire is installed outside the diversion channel, a heat preservation layer is arranged outside the heating wire, a support frame is installed outside the bottom end of the heat preservation layer, and a vibration motor is installed outside the heat preservation layer.

Further, the (mixing) shaft activity runs through screening storehouse top, the ejector pin activity runs through screening storehouse one side, the dump bin is cylindrically, pass through threaded connection between dump bin and the waste outlet.

Furthermore, a first flow limiting plate is installed at the joint of the feed hopper and the feed pipe, and a second flow limiting plate is installed at the joint of the flow guide channel and the flow dividing pipe.

Furthermore, the bottom of the vibration motor is arranged on a first cross rod of the support frame, one end of the first cross rod is connected to a heat-insulating layer, and the heat-insulating layer is made of aluminum silicate heat-insulating materials.

The utility model has the advantages that:

(1) the utility model relates to a feeding device of a double-screw extruder for plastic recovery granulation, which feeds melted recovered plastic into a screening bin, the bottom of the screening bin is provided with a screen plate, the screen plate is provided with a leak hole for screening the melted recycled plastic, and the unmelted plastic particles with larger volume and the solid unmelted impurities in the melted recycled plastic are intercepted, the pushing block is pushed by the cylinder, the pushing block pushes unmelted plastic particles and solid unmelted impurities which are intercepted on the sieve plate to a waste outlet, the unmelted plastic particles and the solid unmelted impurities drop into a waste box and are discharged out of the feeding device, the screening process is accelerated through the stirring shaft and the stirring blades, the quality of recycled plastics is improved through screening, large granular substances are prevented from blocking an inner pipeline of the feeding device, certain mechanical abrasion of the feeding device caused by the large granular substances is avoided, and the service life of the feeding device is prolonged;

(2) the heating wires are arranged outside the diversion channel to heat the molten recycled plastic, the heat preservation layer is arranged outside the heating wires to maintain constant temperature, the molten recycled plastic is prevented from being solidified when the temperature is reduced in the conveying process, the vibration motor is arranged, the diversion channel is vibrated through the vibration motor, and the molten recycled plastic is prevented from being attached to the diversion channel to block the feeding device;

(3) the utility model discloses a feeding device's water conservancy diversion passageway bottom is connected with the shunt tubes, and two conveyer pipes can be installed to the shunt tubes bottom, can retrieve for the granulation twin-screw extruder to carry out feed supply simultaneously to two plastics through two conveyer pipes to feeding device's work efficiency has been improved.

Drawings

The present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of a feeding device of a double-screw extruder for plastic recycling and granulation of the present invention;

FIG. 2 is a schematic structural view of a stirring device of the present invention;

FIG. 3 is an enlarged schematic view of the present invention at A in FIG. 1;

fig. 4 is an enlarged schematic view of the present invention at B in fig. 1.

In the figure: 1. a feed hopper; 2. a feed pipe; 3. a first restrictor plate; 4. a screening bin; 5. a waste outlet; 6. a waste bin; 7. a cylinder; 71. a top rod; 8. a push block; 9. a sieve plate; 91. a leak hole; 101. a motor; 102. a stirring shaft; 103. stirring blades; 11. a flow guide channel; 111. heating wires; 112. a heat-insulating layer; 113. a vibration motor; 12. a support frame; 121. a first cross bar; 13. a shunt tube; 14. a second restrictor plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the utility model relates to a feeding device of a double screw extruder for plastic recycling granulation, which comprises a feed hopper 1 and a screening bin 4, wherein the bottom of the feed hopper 1 is provided with a feed pipe 2, one end of the feed pipe 2, which is far away from the feed hopper 1, is connected to one side of the screening bin 4, the top of the screening bin 4 is provided with a motor 101, the output shaft of the motor 101 is connected with a stirring shaft 102, the bottom end of the stirring shaft 102 is provided with a plurality of stirring blades 103, one side of the screening bin 4, which is far away from the feed pipe 2, is provided with a waste material outlet 5, the bottom of the waste material outlet 5 is connected with a waste material box 6, the bottom of the screening bin 4 is provided with a sieve plate 9, the sieve plate 9 is provided with a plurality of leak;

the bottom of the sieve plate 9 is provided with a flow guide channel 11, the bottom end of the flow guide channel 11 is connected with a flow dividing pipe 13, the outside of the flow guide channel 11 is provided with a heating wire 111, the outside of the heating wire 111 is provided with a heat preservation layer 112, the outside of the bottom end of the heat preservation layer 112 is provided with a support frame 12, and the outside of the heat preservation layer 112 is provided with.

Specifically, the stirring shaft 102 movably penetrates through the top of the screening bin 4, the ejector rod 71 movably penetrates through one side of the screening bin 4, the waste bin 6 is cylindrical, and the waste bin 6 is connected with the waste outlet 5 through threads; a first flow limiting plate 3 is arranged at the joint of the feed hopper 1 and the feed pipe 2, and a second flow limiting plate 14 is arranged at the joint of the diversion channel 11 and the diversion pipe 13; the bottom of the vibration motor 113 is installed on a first cross bar 121 of the support frame 12, one end of the first cross bar 121 is connected to the insulating layer 112, and the insulating layer 112 is made of aluminum silicate insulating material.

Referring to fig. 1-4, the working process of the feeding device of the twin-screw extruder for plastic recycling and granulating of the present embodiment is as follows:

putting melted recycled plastic into a feed hopper 1, adjusting a first flow limiting plate 3 at the joint of the feed hopper 1 and a feed pipe 2 to control the feeding rate and the feeding amount of the melted recycled plastic entering a feeding device, enabling the melted recycled plastic to enter a screening bin 4 through the feed pipe 2 and then fall on a screen plate 9, wherein large particle parts which are not completely melted and solid infusible impurities are intercepted on the screen plate 9, opening a cylinder 7, enabling an output shaft of the cylinder 7 to extend forwards to push a push block 8 to move forwards through a push rod 71, pushing the unmelted plastic particles and the solid infusible impurities which are intercepted on the screen plate 9 to move forwards through the push block 8, pushing the unmelted plastic particles and the solid infusible impurities to a waste outlet 5 to fall into a waste bin 6, and discharging the unmelted plastic particles and the solid infusible impurities out of the feeding device; the completely melted part flows down through the leakage hole 91, is heated by the heating wire 111 in the flow guide channel 11, quickly passes through the flow guide channel 11 along with the vibration of the vibration motor 113 to enter the shunt pipe 13, the second flow limiting plate 14 at the joint of the flow guide channel 11 and the shunt pipe 13 is adjusted to control the sending rate and the sending amount of the melted recycled plastic from the feeding device, and the shunt pipe 13 divides the melted recycled plastic into two routes and simultaneously feeds the two double-screw extruders for plastic recycling and granulating.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims

1. The feeding device of the double-screw extruder for plastic recycling and granulation is characterized by comprising a feeding hopper (1) and a screening bin (4), wherein the feeding pipe (2) is installed at the bottom of the feeding hopper (1), one end, far away from the feeding hopper (1), of the feeding pipe (2) is connected to one side of the screening bin (4), a motor (101) is installed at the top of the screening bin (4), an output shaft of the motor (101) is connected with a stirring shaft (102), a plurality of stirring blades (103) are installed at the bottom end of the stirring shaft (102), a waste material outlet (5) is arranged at one side, far away from the feeding pipe (2), of the screening bin (4), a waste material box (6) is connected to the bottom of the waste material outlet (5), a screen plate (9) is installed at the bottom of the screening bin (4), a plurality of leak holes (91), one side of the push block (8), which is far away from the waste outlet (5), is connected with a push rod (71), and one end of the push rod (71), which is far away from the push block (8), is connected to an output shaft of the air cylinder (7);

flow guide channel (11) are installed to sieve (9) bottom, flow guide channel (11) bottom is connected with shunt tubes (13), flow guide channel (11) externally mounted has heater strip (111), heater strip (111) outside is equipped with heat preservation (112), heat preservation (112) bottom externally mounted has support frame (12), heat preservation (112) externally mounted has vibrating motor (113).

2. The feeding device of the double-screw extruder for plastic recycling and granulating as claimed in claim 1, wherein the stirring shaft (102) movably penetrates through the top of the screening bin (4), the ejector rod (71) movably penetrates through one side of the screening bin (4), the waste bin (6) is cylindrical, and the waste bin (6) is connected with the waste outlet (5) through threads.

3. The feeding device of the twin-screw extruder for plastic recycling and granulation as claimed in claim 1, wherein a first flow restriction plate (3) is installed at the connection of the feeding hopper (1) and the feeding pipe (2), and a second flow restriction plate (14) is installed at the connection of the diversion channel (11) and the diversion pipe (13).

4. The feeding device of the twin-screw extruder for plastic recycling and granulating as claimed in claim 1, wherein the bottom of the vibration motor (113) is mounted on a first cross bar (121) of the supporting frame (12), one end of the first cross bar (121) is connected to the insulating layer (112), and the insulating layer (112) is made of aluminum silicate insulating material.