CN111958937A

CN111958937A - High-speed extruder of electric wire production

Info

Publication number: CN111958937A
Application number: CN202010732540.4A
Authority: CN
Inventors: 尹宣; 尹树清; 尹万仓; 伍建元; 罗红英
Original assignee: Hengyang South China Wire Co ltd
Current assignee: Hengyang South China Wire Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2020-11-20

Abstract

The invention relates to the technical field of wire and cable production, and discloses a high-speed extruder for wire production, which comprises a fixed frame, wherein four corners of the lower surface of the fixed frame are fixedly connected with supporting legs, four corners of the upper surface of the fixed frame are fixedly connected with connecting columns, and the upper surface of each connecting column is fixedly connected with a particle crushing device. This high-speed extruder of electric wire production, it carries out primary crushing to rotate crushing wheel pair raw materials through driving motor drive, it carries out the second grade to smash the raw materials to rotate the motor and drive crushing sword, transmission motor drives the cutting knife and carries out the smashing that becomes more meticulous to the raw materials, tertiary smashing mutually supports and has better crushing effect to the raw materials, can carry out more effectual smashing that becomes more meticulous to the raw materials of big granule, very big improvement to the crushing effect of raw materials, be convenient for better carry out electric wire production and processing more, the waste of resource has been avoided, the production machining efficiency of electric wire is improved, the convenience of using is improved.

Description

High-speed extruder of electric wire production

Technical Field

The invention relates to the technical field of wire and cable production, in particular to a high-speed extruder for wire production.

Background

The extruder is an important device of high polymer material processing machinery, the outer insulating layer of the wire and cable is usually carried out by adopting the extruder, in the extrusion process, the plastic loaded in a hopper enters a machine barrel by virtue of gravity or feeding screw, continuously advances under the thrust action of a rotating screw, under the action of certain temperature, the plastic is converted into viscous flow material in a molten state from a solid state under the stirring and extrusion action of the screw, the external heat transfer action between the plastic and the device and the shearing and friction action between the plastic and the device, the plasticized plastic is pushed into a machine head under the action of the screw, is extruded and molded through a die sleeve opening, wraps around a wire core to form an insulating layer, and is cooled and solidified to obtain the wire and cable product; the existing method is to extrude the insulating layer outside the electric core wire through one piece of equipment and extrude the outermost protective layer through another piece of equipment, and the production mode has the advantages of large equipment floor area, high economic investment and no contribution to improving the production efficiency of electric wires.

For example, a high speed extruder for electrical wire, chinese patent application No. 201911088119.8, is described generally as: the electric wire high-speed extruder comprises a bod, the equal fixedly connected with feeder hopper in both sides at organism top, the bottom fixedly connected with support frame of organism, the middle part fixedly connected with division board of inner chamber of the body, the equal fixedly connected with filter screen one in both sides on division board top, the equal fixedly connected with bottom plate in both sides of division board bottom, this electric wire high-speed extruder smashes cooperation puddler two and the hot plate through smashing the pole and melts the operation to the raw materials, but this mode is relatively poor to the smashing of raw materials and melts the effect, crushing effect to the raw materials is not good at crushing in-process, very easily causes a large amount of raw materials extravagant, has improved the production and processing cost of electric wire, has caused the waste of resource, is unfavorable.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the high-speed extruder for the electric wire production, which has the advantages of better crushing effect on electric wire raw materials, better heating and melting effect and the like, and solves the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high-speed extruder of electric wire production, includes fixed frame, the equal fixedly connected with supporting leg in four corners of fixed frame lower surface, the equal fixedly connected with spliced pole in four corners of fixed frame upper surface, the last fixed surface of spliced pole is connected with granule reducing mechanism, granule reducing mechanism's lower surface is provided with fine grinding mechanism, fixed frame's inside is provided with the heating and melts the device, the post is stabilized to the front side fixedly connected with of fixed frame lower surface, the lower fixed surface of stabilizing the post is connected with electric putter, electric putter's output fixedly connected with pushes away the driving disk, electric putter's the left and right sides all is provided with the extrusion bucket, the left and right sides of extrusion bucket all communicates there is the extrusion head.

Preferably, granule reducing mechanism is including smashing the case, the upper surface of smashing the case is provided with the feed inlet, the top of smashing the case left surface is provided with first rotating gear and second rotating gear respectively, the left surface fixedly connected with driving motor who smashes the case, the equal fixedly connected with in right flank of first rotating gear and second rotating gear rotates crushing wheel, the bottom fixedly connected with who smashes the case left surface rotates the motor, the output fixedly connected with drive wheel that rotates the motor, the drive wheel passes through the drive belt transmission and connects, the right flank fixedly connected with axis of rotation of drive wheel, crushing sword has been cup jointed to the surface of axis of rotation.

Preferably, fine grinding device includes drive motor, drive motor's output fixedly connected with transfer line, first bevel gear group and second bevel gear group have been cup jointed respectively to the surface of transfer line, the equal fixedly connected with rotation axis of lower surface of first bevel gear group and second bevel gear group, the outer fixed surface of rotation axis is connected with steady rest, steady rest's the outside is provided with crushing awl bucket, the cutting knife has been cup jointed to the surface of rotation axis, the bottom fixedly connected with support frame of rotation axis, the bottom of crushing awl bucket inner wall is provided with turns over the carousel, the front side of turning over the carousel is provided with the rotation handle.

Preferably, the device is melted in heating includes PMKD, PMKD's last fixed surface is connected with the heating bucket, the inner wall fixedly connected with heating pipe of heating bucket, PMKD's last fixed surface is connected with water conservancy diversion swash plate, PMKD's front side is provided with the discharge gate, PMKD's lower fixed surface is connected with agitator motor, agitator motor's output fixedly connected with toper rotary drum, the medial surface fixedly connected with solenoid that generates heat of toper rotary drum, the outer fixed surface of the solenoid that generates heat is connected with the stirring and heating pole, the last fixed surface of toper rotary drum is connected with the runing rest.

Preferably, the outer surface of the rotating handle is provided with an anti-slip layer, and the outer surface of the anti-slip layer is uniformly provided with friction anti-slip grains.

Preferably, the fixed frame and the supporting legs are made of cast iron, and the outer surfaces of the fixed frame and the supporting legs are uniformly coated with antirust coatings.

Preferably, the number of the heating pipes is twenty two, and the outer surfaces of the twenty two groups of heating pipes are provided with heating threads.

Preferably, four rows of crushing knives are arranged on the outer surface of the rotating shaft, and the number of the crushing knives in each row is fourteen groups.

Preferably, the feed inlet is rectangular, and the length and the width of the feed inlet are respectively one thousand, two hundred millimeters and three hundred millimeters.

(III) advantageous effects

Compared with the prior art, the invention provides a high-speed extruder for wire production, which has the following beneficial effects:

1. this high-speed extruder of electric wire production, it carries out primary crushing to rotate crushing wheel pair raw materials through driving motor drive, it carries out the second grade to smash the raw materials to rotate the motor and drive crushing sword, transmission motor drives the cutting knife and carries out the smashing that becomes more meticulous to the raw materials, tertiary smashing mutually supports and has better crushing effect to the raw materials, can carry out more effectual smashing that becomes more meticulous to the raw materials of big granule, very big improvement to the crushing effect of raw materials, be convenient for better carry out electric wire production and processing more, the waste of resource has been avoided, the production machining efficiency of electric wire is improved, the convenience of using is improved.

2. This high-speed extruder of electric wire production, drive the solenoid that generates heat and stir the raw materials through agitator motor, cooperation heating pipe realizes the even heating to the raw materials, area of contact of increase and raw materials that can be better, be convenient for carry out even abundant mixture after melting the raw materials more, it melts the effect to have better heating to the raw materials, the effect of melting to the raw materials has been improved, very big improvement to the availability factor and the utilization ratio of raw materials, the waste to the raw materials has been reduced, the manufacturing cost of electric wire has been reduced, the machining efficiency to the electric wire has further been improved.

Drawings

FIG. 1 is a schematic view of a high-speed extruder for wire production according to the present invention;

FIG. 2 is a rear view of a high speed extruder configuration for wire production in accordance with the present invention;

FIG. 3 is a schematic structural view of a particle crushing device of a high-speed extruder for wire production according to the present invention;

FIG. 4 is a schematic view of a fine grinding device of a high-speed wire production extruder according to the present invention;

fig. 5 is a schematic structural view of a heating and melting device of a high-speed extruder for wire production according to the present invention.

In the figure: 1. a fixed frame; 2. supporting legs; 3. connecting columns; 4. a particle pulverizing device; 401. a crushing box; 402. a feed inlet; 403. a first rotating gear; 404. a second rotating gear; 405. a drive motor; 406. rotating the crushing wheel; 407. rotating the motor; 408. a driving wheel; 409. a transmission belt; 410. a rotating shaft; 411. a crushing knife; 5. a fine grinding device; 501. a drive motor; 502. a transmission rod; 503. a first bevel gear set; 504. a second bevel gear set; 505. a rotating shaft; 506. a stabilizer frame; 507. a crushing cone barrel; 508. a cutting knife; 509. a support frame; 510. turning over the turntable; 511. rotating the handle; 6. a heating and melting device; 601. fixing the bottom plate; 602. a heating barrel; 603. heating a tube; 604. a flow guiding sloping plate; 605. a discharge port; 606. a stirring motor; 607. a conical rotating drum; 608. a heating coil; 609. a stirring heating rod; 610. rotating the bracket; 7. a stabilization post; 8. an electric push rod; 9. pushing the disc; 10. extruding the barrel; 11. an extrusion head.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a high-speed extruder for wire production comprises a fixed frame 1, wherein supporting legs 2 are fixedly connected with four corners of the lower surface of the fixed frame 1, connecting columns 3 are fixedly connected with four corners of the upper surface of the fixed frame 1, a particle crushing device 4 is fixedly connected with the upper surface of the connecting column 3, a fine crushing device 5 is arranged on the lower surface of the particle crushing device 4, a driving motor 405 drives a rotating crushing wheel 406 to perform primary crushing on raw materials, a rotating motor 407 drives a crushing knife 411 to perform secondary crushing on the raw materials, a driving motor 501 drives a cutting knife 508 to perform fine crushing on the raw materials, the three-stage crushing is matched with each other to have a better crushing effect on the raw materials, the raw materials with large particles can be more effectively and finely crushed, the crushing effect on the raw materials is greatly improved, better wire production and processing are facilitated, and the waste of resources, the production and processing efficiency of the electric wire is improved, the use convenience is improved, the heating and melting device 6 is arranged in the fixed frame 1, the heating solenoid 608 and the stirring and heating rod 609 are driven by the stirring motor 606 to rotate to stir the raw material, the raw material is uniformly heated by matching with the heating pipe 603, the contact area with the raw material can be better increased, the raw material can be more conveniently and uniformly and fully mixed after being melted, the raw material has better heating and melting effects, the melting effect of the raw material is improved, the use efficiency and the utilization rate of the raw material are greatly improved, the waste of the raw material is reduced, the production cost of the electric wire is reduced, the processing efficiency of the electric wire is further improved, the stabilizing column 7 is fixedly connected to the front side of the lower surface of the fixed frame 1, the electric push rod 8 is fixedly connected to the lower surface of the stabilizing column 7, and the specific model of the electric push rod 22, the output end of the electric push rod 8 is fixedly connected with a push disc 9, the left side and the right side of the electric push rod 8 are both provided with an extrusion barrel 10, and the left side and the right side of the extrusion barrel 10 are both communicated with an extrusion head 11.

In the invention, in order to facilitate crushing of bulky raw materials and improve crushing effect, the particle crushing device 4 comprises a crushing box 401, a feeding hole 402 is arranged on the upper surface of the crushing box 401, a first rotating gear 403 and a second rotating gear 404 are respectively arranged at the top of the left side surface of the crushing box 401, a driving motor 405 is fixedly connected to the left side surface of the crushing box 401, the specific model of the driving motor 405 is 5IK120GN-C, the right side surfaces of the first rotating gear 403 and the second rotating gear 404 are both fixedly connected with a rotating crushing wheel 406, the bottom of the left side surface of the crushing box 401 is fixedly connected with a rotating motor 407, the specific model of the rotating motor 407 is 5IK120GN-C, the output end of the rotating motor 407 is fixedly connected with a driving wheel 408, the driving wheel 408 is in driving connection through a driving belt 409, the right side surface of the driving wheel 408 is fixedly connected with a rotating shaft 410, and, driving motor 405 drives and rotates crushing wheel 406 and carry out primary crushing to the raw materials, and rotation motor 407 drives crushing sword 411 and carries out the second grade to the raw materials and smash, with the great quick breakage of raw materials of volume, has better crushing effect, has improved crushing efficiency.

In order to further improve the raw material crushing effect, the fine crushing device 5 comprises a transmission motor 501, the specific model of the transmission motor 501 is 5IK120GN-C, the output end of the transmission motor 501 is fixedly connected with a transmission rod 502, the outer surface of the transmission rod 502 is respectively sleeved with a first bevel gear set 503 and a second bevel gear set 504, the lower surfaces of the first bevel gear set 503 and the second bevel gear set 504 are respectively and fixedly connected with a rotating shaft 505, the outer surface of the rotating shaft 505 is fixedly connected with a stabilizing frame 506, the outer side of the stabilizing frame 506 is provided with a crushing cone barrel 507, the outer surface of the rotating shaft 505 is sleeved with a cutting knife 508, the bottom end of the rotating shaft 505 is fixedly connected with a supporting frame 509, the bottom of the inner wall of the crushing cone barrel 507 is provided with a turnover disc 510, the front side of the turnover disc 510 is provided with a, the crushed particles are finer, and the crushing effect on the raw materials is further improved.

In order to improve the heating and melting effect of the raw material and facilitate the use of the raw material, the heating and melting device 6 comprises a fixed bottom plate 601, the upper surface of the fixed bottom plate 601 is fixedly connected with a heating barrel 602, the inner wall of the heating barrel 602 is fixedly connected with a heating pipe 603, the upper surface of the fixed bottom plate 601 is fixedly connected with a diversion sloping plate 604, the front side of the fixed bottom plate 601 is provided with a discharge hole 605, the lower surface of the fixed bottom plate 601 is fixedly connected with a stirring motor 606, the specific model of the stirring motor 606 is 5IK120GN-C, the output end of the stirring motor 606 is fixedly connected with a conical rotating cylinder 607, the inner side surface of the conical rotating cylinder 607 is fixedly connected with a heating coil 608, the outer surface of the heating coil 608 is fixedly connected with a stirring and heating rod 609, the upper surface of the conical rotating cylinder 607 is fixedly connected with a rotating bracket 610, and the, the cooperation heating pipe 603 realizes the even heating to the raw materials, improves the heating of raw materials and melts the effect, has improved the convenience of using.

In order to improve the anti-skid effect, the anti-skid layer is arranged on the outer surface of the rotating handle 511, the outer surface of the anti-skid layer is uniformly provided with friction anti-skid grains, and the friction anti-skid grains on the outer surface of the rotating handle 511 increase the friction force when the anti-skid layer is contacted with the hand, so that the anti-skid effect is improved.

In order to prolong the service life of the support frame, the fixed frame 1 and the support legs 2 are made of cast iron, the outer surfaces of the fixed frame 1 and the support legs 2 are uniformly coated with antirust coatings, the antirust coatings on the outer surfaces of the fixed frame 1 and the support legs 2 are prevented from being corroded, and the service life of the support frame is prolonged.

In the invention, in order to improve the heating effect on the raw material, the number of the heating pipes 603 is twenty two, the outer surfaces of the twenty two heating pipes 603 are provided with heating threads, and the heating threads on the outer surfaces of the twenty two heating pipes 603 are matched with each other, so that the heating effect on the raw material is improved.

In order to improve the raw material crushing effect, four rows of crushing blades 411 are arranged on the outer surface of the rotating shaft 410, the number of each row of crushing blades 411 is fourteen, and the four rows of crushing blades 411 on the outer surface of the rotating shaft 410 are matched with each other, so that the raw material crushing effect is improved.

In the invention, in order to facilitate the rapid injection of the raw materials, the use convenience is improved, so that the feed inlet 402 is arranged in a rectangular shape, the length and the width of the feed inlet 402 are respectively one thousand, two hundred millimeters and three hundred millimeters, the length and the width of the feed inlet 402 facilitate the rapid injection of the raw materials, and the use convenience is improved.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

When the material crusher is used, raw materials to be processed are injected into a feeding hole 402, a driving motor 405 is started, the output end of the driving motor 405 drives a first rotating gear 403 to rotate, the first rotating gear 403 drives a second rotating gear 404 to rotate, the first rotating gear 403 and the second rotating gear 404 simultaneously drive a rotating crushing wheel 406 to perform primary crushing on the raw materials, the crushed raw materials drop downwards, the rotating motor 407 is started, the output end of the rotating motor 407 drives a driving wheel 408 to rotate, the driving wheel 408 drives a rotating shaft 410 to rotate through a driving belt 409, the rotating shaft 410 drives a crushing knife 411 to rotate to perform secondary crushing on the raw materials, the crushed raw materials drop downwards into a crushing cone barrel 507, the driving motor 501 is started, the output end of the driving motor 501 drives a driving rod 502 to rotate, and the driving rod 502 drives a first bevel gear set 503 and a second bevel gear set 504 to rotate, the first bevel gear set 503 and the second bevel gear set 504 drive the rotation shaft 505 to rotate, the rotation shaft 505 drives the cutter 508 to rotate to finely crush the raw material, then the rotation handle 511 is controlled to drive the turnover plate 510 to rotate ninety degrees, the crushed raw material falls downwards into the heating barrel 602, the rotation handle 511 is controlled to drive the turnover plate 510 to rotate ninety degrees in reverse direction to close, the heating pipe 603 and the heating solenoid 608 are electrified to generate heat, the stirring motor 606 is started, the output end of the stirring motor 606 drives the conical rotating cylinder 607 to rotate, the conical rotating cylinder 607 drives the heating solenoid 608 and the stirring heating rod 609 to rotate to uniformly heat the crushed raw material, the heated and melted raw material flows into the discharge port 605 through the diversion sloping plate 604 and enters the extrusion barrel 10 through the discharge port 605, the electric push rod 8 is started, the output end of the electric push rod 8 drives the push plate 9 to extrude the heated raw material, and extruding the heated raw materials into an extrusion head 11 to wrap the electric wire, thereby finishing all operations.

To sum up, this high-speed extruder of electric wire production, it carries out primary crushing to the raw materials to drive through driving motor 405 and rotate crushing wheel 406, it drives crushing sword 411 and carries out the second grade to the raw materials to rotate motor 407 and smash, driving motor 501 drives cutting knife 508 and smashes the raw materials more meticulously, tertiary crushing mutually supports and has better crushing effect to the raw materials, can carry out more effectual smashing of fining to the raw materials of big granule, very big improvement to the crushing effect of raw materials, be convenient for better carrying out electric wire production and processing more, the waste of resource has been avoided, the production machining efficiency of electric wire is improved, the convenience of use is improved.

This high-speed extruder of electric wire production, drive the solenoid 608 and stir the heating rod 609 through agitator motor 606 and rotate and stir the raw materials, cooperation heating pipe 603 realizes the even heating to the raw materials, area of contact of increase and raw materials that can be better, be convenient for carry out even abundant mixture after melting the raw materials more, it melts the effect to have better heating to the raw materials, the effect of melting to the raw materials has been improved, very big improvement the availability factor and the utilization ratio to the raw materials, the waste to the raw materials has been reduced, the manufacturing cost of electric wire has been reduced, the machining efficiency to the electric wire has further been improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high-speed extruder for wire production comprises a fixed frame (1), and is characterized in that: four corners of the lower surface of the fixed frame (1) are fixedly connected with supporting legs (2), four corners of the upper surface of the fixed frame (1) are fixedly connected with connecting columns (3), the upper surface of the connecting column (3) is fixedly connected with a particle crushing device (4), the lower surface of the particle crushing device (4) is provided with a fine crushing device (5), a heating and melting device (6) is arranged in the fixed frame (1), a stabilizing column (7) is fixedly connected with the front side of the lower surface of the fixed frame (1), the lower surface of the stabilizing column (7) is fixedly connected with an electric push rod (8), the output end of the electric push rod (8) is fixedly connected with a push disc (9), the left side and the right side of the electric push rod (8) are both provided with an extrusion barrel (10), the left side and the right side of the extrusion barrel (10) are both communicated with extrusion heads (11).

2. A high-speed extruder for electric wire production according to claim 1, wherein: particle smashing device (4) are including smashing case (401), the upper surface of smashing case (401) is provided with feed inlet (402), the top of smashing case (401) left surface is provided with first rotating gear (403) and second rotating gear (404) respectively, the left surface fixedly connected with driving motor (405) of smashing case (401), the equal fixedly connected with in right flank of first rotating gear (403) and second rotating gear (404) rotates crushing wheel (406), the bottom fixedly connected with in left surface of smashing case (401) rotates motor (407), the output fixedly connected with drive wheel (408) of rotating motor (407), drive wheel (408) are connected through drive belt (409) transmission, the right flank fixedly connected with axis of rotation (410) of drive wheel (408), crushing sword (411) has been cup jointed to the surface of axis of rotation (410).

3. A high-speed extruder for electric wire production according to claim 1, wherein: the fine crushing device (5) comprises a transmission motor (501), an output end fixedly connected with transmission rod (502) of the transmission motor (501), a first bevel gear set (503) and a second bevel gear set (504) are respectively sleeved on the outer surface of the transmission rod (502), a rotating shaft (505) is respectively fixedly connected with the lower surfaces of the first bevel gear set (503) and the second bevel gear set (504), a stabilizing frame (506) is fixedly connected with the outer surface of the rotating shaft (505), a crushing cone barrel (507) is arranged on the outer side of the stabilizing frame (506), a cutting knife (508) is sleeved on the outer surface of the rotating shaft (505), a supporting frame (509) is fixedly connected with the bottom end of the rotating shaft (505), a turnover disc (510) is arranged at the bottom of the inner wall of the crushing cone barrel (507), and a rotating handle (.

4. A high-speed extruder for electric wire production according to claim 1, wherein: the heating and melting device (6) comprises a fixed base plate (601), the upper surface of the fixed base plate (601) is fixedly connected with a heating barrel (602), the inner wall of the heating barrel (602) is fixedly connected with a heating pipe (603), the upper surface of the fixed base plate (601) is fixedly connected with a diversion sloping plate (604), the front side of the fixed base plate (601) is provided with a discharge hole (605), the lower surface of the fixed base plate (601) is fixedly connected with a stirring motor (606), the output end of the stirring motor (606) is fixedly connected with a conical rotating cylinder (607), the inner side surface of the conical rotating cylinder (607) is fixedly connected with a heating solenoid (608), the outer surface of the heating solenoid (608) is fixedly connected with a stirring heating rod (609), and the upper surface of the conical rotating cylinder (607.

5. A high-speed extruder for electric wire production according to claim 3, wherein: the outer surface of the rotating handle (511) is provided with an anti-slip layer, and the outer surface of the anti-slip layer is uniformly provided with friction anti-slip lines.

6. A high-speed extruder for electric wire production according to claim 1, wherein: the fixed frame (1) and the supporting legs (2) are made of cast iron, and the outer surfaces of the fixed frame (1) and the supporting legs (2) are uniformly coated with antirust coatings.

7. A high-speed extruder for electric wire production according to claim 4, wherein: the number of the heating pipes (603) is twenty two, and the outer surfaces of the twenty two groups of heating pipes (603) are provided with heating threads.

8. A high-speed extruder for electric wire production according to claim 2, wherein: four rows of crushing knives (411) are arranged on the outer surface of the rotating shaft (410), and the number of each row of crushing knives (411) is fourteen groups.

9. A high-speed extruder for electric wire production according to claim 2, wherein: the feed inlet (402) is arranged in a rectangular shape, and the length and the width of the feed inlet (402) are respectively one thousand, two hundred millimeters and three hundred millimeters.