CN111660533A

CN111660533A - Anti-blocking type screw extruder material mixing and discharging device

Info

Publication number: CN111660533A
Application number: CN202010538774.5A
Authority: CN
Inventors: 李强
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-13
Filing date: 2020-06-13
Publication date: 2020-09-15

Abstract

The invention relates to the technical field of extruders and discloses a material mixing and discharging device of an anti-blocking screw extruder. This prevent stifled material type screw extruder compounding unloader, start first motor and second motor at the compounding in-process, the second motor operation can drive the movable rod, connecting rod and interior lantern ring revolute the rotation of axes, can drive the disc through the second motor simultaneously and rotate, and drive outer lantern ring and interior lantern ring up-and-down motion through the montant, and then make the movable rod luffing motion when the pivoted, the stirring effect has been improved, and make the material stirring of hopper bottom more loose, the probability that jam or bridging phenomenon takes place has been reduced.

Description

Anti-blocking type screw extruder material mixing and discharging device

Technical Field

The invention relates to the technical field of extruders, in particular to a mixing and blanking device of an anti-blocking screw extruder.

Background

The screw extruder can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by rotation of the screw, through the die molding, the plastic extruders can be basically classified into twin-screw extruders, single-screw extruders and rarely multi-screw extruders and screw-less extruders, the existing extruder hoppers generally adopt an open type inverted cone hopper structure, when the raw materials fall into the hopper from a plurality of scales, the materials cannot be mixed effectively and timely, while the diameter of the hopper near the feed opening of the extruder is gradually reduced, too rapid a change results in the material forming a compacted solid which, over time, causes blockages and bridging in the hopper and, in addition, in the material mixing process, materials at the joint of the hopper and the extrusion screw cannot be well mixed and stirred, so that the initial section quality of an extruded finished product is low.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a material mixing and discharging device of an anti-blocking screw extruder, which has the advantages of anti-blocking, quality improvement and the like, and solves the problems that the phenomena of material blocking and bridging are easy to occur in the conventional hopper, and a small amount of material at the joint of the hopper and an extrusion screw is not stirred sufficiently.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a material-mixing and blanking device of an anti-blocking screw extruder comprises a hopper, a connecting pipe and a conveying pipe, wherein the connecting pipe is fixedly arranged at the bottom of the hopper, the conveying pipe is fixedly arranged at the bottom of the connecting pipe, a mounting plate is fixedly connected to the side surface of the hopper, a first motor is fixedly connected to the bottom of the mounting plate, an output shaft of the first motor is fixedly connected with a cross shaft, one end of the cross shaft penetrates through the side wall of the hopper and extends into the hopper, one end of the cross shaft, which is positioned inside the hopper, is fixedly connected with a disc, the top of the hopper is provided with a second motor, a reduction box is fixedly arranged on an output shaft of the second motor, the reduction box is fixedly connected with the top of the hopper, the output end of the reduction box is fixedly connected with a rotating shaft, the bottom end of, the connecting mechanism bottom is equipped with first screw rod, first screw rod is located inside the connecting pipe, first screw rod bottom is provided with control mechanism, conveyer pipe one side fixedly connected with third motor, the output shaft of third motor runs through the conveyer pipe lateral wall and extends to inside the conveyer pipe, fixed mounting has the second screw rod on the output shaft of third motor.

Prevent stifled mechanism and include the interior lantern ring, the interior lantern ring cup joints with the pivot activity, interior lantern ring both sides all articulate there is the connecting rod, the connecting rod is kept away from interior lantern ring one end and is articulated to have a movable rod, the movable rod is kept away from connecting rod one end and is articulated with the pivot, there is outer lantern ring in the interior lantern ring outside through bearing swing joint, outer lantern ring one side swing joint has the montant, montant top and disc swing joint.

Coupling mechanism includes the horizontal pole, the horizontal pole both ends all with connecting pipe inner wall fixed connection the horizontal pole middle part is fixed and is provided with first standpipe, first standpipe top with through bearing and pivot swing joint, first standpipe bottom cup joints with first screw rod top activity, inside shaft coupling piece and the lower shaft coupling piece of being equipped with of first standpipe, go up shaft coupling piece and pivot bottom fixed connection, shaft coupling piece and first screw rod top fixed connection down.

Control mechanism is including violently managing, violently manage both ends all with connecting pipe inner wall fixed connection, violently manage the fixed second standpipe that is provided with in middle part, the inside activity of second standpipe is pegged graft there is the square bar, bearing and first screw rod bottom swing joint are passed through on the square bar top, the chute has been seted up to square bar one side, be equipped with the sloping block in the chute, sloping block one side swing joint has half tooth threaded rod, half tooth threaded rod with violently manage the activity and peg graft, half tooth threaded rod one end runs through the connecting pipe inner wall and extends to the connecting pipe outside, half tooth threaded rod and connecting pipe inner wall threaded connection, half tooth threaded rod is located the outside one end fixedly connected with runner of connecting pipe.

The chute lateral wall is provided with first inclined plane, the sloping block is provided with the second inclined plane near first inclined plane one side, first inclined plane and second inclined plane angle match, the length on first inclined plane is greater than the second inclined plane.

The second motor has two working modes, the first working mode is a material stirring mode, under the working mode, the lower coupling block and the upper coupling block are in a separation state, and the first screw rod does not rotate; the second working mode is a material conveying mode, under the working mode, the lower coupling block is meshed with the upper coupling block, and the second motor drives the rotating shaft and the first screw rod to synchronously rotate so as to convey fully-mixed materials into the conveying pipe.

Preferably, the bottom of the hopper and the bottom of the conveying pipe are respectively and fixedly connected with a first support and a second support, and two symmetrically distributed feeding holes are formed in the top of the hopper.

Compared with the prior art, the invention provides a material mixing and discharging device of an anti-blocking screw extruder, which has the following beneficial effects:

1. this prevent stifled material type screw extruder compounding unloader, start first motor and second motor at the compounding in-process, the second motor operation can drive the movable rod, connecting rod and interior lantern ring revolute the rotation of axes, can drive the disc through the second motor simultaneously and rotate, and drive outer lantern ring and interior lantern ring up-and-down motion through the montant, and then make the movable rod luffing motion when the pivoted, the stirring effect has been improved, and make the material stirring of hopper bottom more loose, the probability that jam or bridging phenomenon takes place has been reduced.

2. This prevent stifled material type screw extruder compounding unloader, through setting up the connecting pipe and set up coupling mechanism and control mechanism inside the connecting pipe, after the material is fully stirred in hopper inside, it can make first screw rod shift up to rotate the runner, the meshing through last shaft coupling piece and lower shaft coupling piece can make first screw rod operation, carry the abundant material of stirring to extruding work in the conveyer pipe, compare prior art, can avoid the hopper and extrude the unable intensive mixing of material of screw rod junction, finished product quality has been guaranteed.

Drawings

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

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of portion B of FIG. 2 according to the present invention;

FIG. 5 is a schematic view of the connection structure of the disc and the upright rod according to the present invention.

Wherein: 1. a hopper; 2. a connecting pipe; 3. a delivery pipe; 4. mounting a plate; 5. a first motor; 6. a horizontal axis; 7. a disc; 8. a second motor; 9. a reduction gearbox; 10. a rotating shaft; 11. a stirring rod; 12. a first screw; 13. a third motor; 14. a second screw; 15. an inner collar; 16. a connecting rod; 17. a movable rod; 18. an outer collar; 19. a vertical rod; 20. a cross bar; 21. a first vertical tube; 22. an upper coupling block; 23. a lower coupling block; 24. a transverse tube; 25. a second standpipe; 26. a square bar; 27. a chute; 28. a sloping block; 29. a half-thread threaded rod; 30. a rotating wheel; 31. and (4) feeding a material inlet.

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, a mixing and discharging device of an anti-blocking screw extruder comprises a hopper 1, a connecting pipe 2 and a conveying pipe 3, wherein the insides of the hopper 1, the connecting pipe 2 and the conveying pipe 3 are communicated with each other, a discharge hole is arranged at one end of the conveying pipe 3, the connecting pipe 2 is fixedly arranged at the bottom of the hopper 1, the conveying pipe 3 is fixedly arranged at the bottom of the connecting pipe 2, the bottoms of the hopper and the conveying pipe 3 are respectively and fixedly connected with a first bracket and a second bracket, two symmetrically distributed feed inlets 31 are arranged at the top of the hopper 1 to facilitate uniform feeding, a mounting plate 4 is fixedly connected to the side surface of the hopper 1, a first motor 5 is fixedly connected to the bottom of the mounting plate 4, a transverse shaft 6 is fixedly connected to an output shaft of the first motor 5, one end of the transverse shaft 6 penetrates through the side wall of the hopper 1 and, one end of the transverse shaft 6, which is positioned inside the hopper 1, is fixedly connected with a disc 7, and the disc 7 can be driven to rotate by the operation of the first motor 5.

1 top of hopper is provided with second motor 8, fixed mounting has reducing gear box 9 on the output shaft of second motor 8, reducing

gear box

9 and 1 top fixed connection of hopper, 9 output end fixed connection of reducing gear box has pivot 10, the pivot 10 bottom runs through 1 roof of hopper and extends to 1 inside the hopper,

pivot

10 and 1 roof swing joint of hopper during the actual application, be provided with puddler 11 and anti-blocking mechanism in the pivot 10, the quantity of puddler 11 sets up to a plurality ofly, a plurality of puddler 11 all are located anti-blocking mechanism top.

Prevent stifled mechanism and include interior lantern ring 15, interior lantern ring 15 cup joints with pivot 10 activity, interior lantern ring 15 both sides all articulate there is connecting rod 16, connecting rod 16 keeps away from interior lantern ring 15 one end and articulates there is the movable rod 17, movable rod 17 keeps away from connecting rod 16 one end and articulates with pivot 10, there is outer lantern ring 18 in the interior lantern ring 15 outside through bearing swing joint, outer lantern ring 18 one side swing joint has montant 19, montant 19 top and disc 7 swing joint, can drive the motion of montant 19 rule when disc 7 rotates, and then can drive outer lantern ring 18 and the up-and-down reciprocating motion of interior lantern ring 15, can drive the luffing motion of movable rod 17 through the transmission of connecting rod 16 when interior lantern ring 15 moves from top to.

The bottom end of the rotating shaft 10 is provided with a connecting mechanism, the connecting mechanism comprises a cross rod 20, two ends of the cross rod 20 are fixedly connected with the inner wall of the connecting pipe 2, the middle part of the cross rod 20 is fixedly provided with a first vertical pipe 21, the top end of the first vertical pipe 21 is movably connected with the rotating shaft 10 through a bearing, the bottom end of the first vertical pipe 21 is movably sleeved with the top end of a first screw 12, an upper coupling block 22 and a lower coupling block 23 are arranged inside the first vertical pipe 21, a gap is arranged between the upper coupling block 22 and the lower coupling block 23 during practical application, the bottom of the upper coupling block 22 and the top of the lower coupling block 23 are both provided with tooth blocks which are matched with each other, the upper coupling block 22 is fixedly connected with the bottom end of the rotating shaft 10, the lower coupling block 23 is fixedly connected with the top end of the first screw 12, the bottom of the connecting mechanism is provided with the first screw 12, the first screw 12, both ends of a transverse pipe 24 are fixedly connected with the inner wall of a connecting pipe 2, a second vertical pipe 25 is fixedly arranged in the middle of the transverse pipe 24, the cross section of the second vertical pipe 25 is square, the second vertical pipe 25 is communicated with the inside of the transverse pipe 24, a square rod 26 is movably inserted in the second vertical pipe 25, the top end of the square rod 26 is movably connected with the bottom end of a first screw rod 12 through a bearing, a chute 27 is arranged on one side of the square rod 26, an inclined block 28 is arranged in the chute 27, the side wall of the chute 27 is provided with a first inclined surface, a second inclined surface is arranged on one side of the inclined block 28 close to the first inclined surface, the first inclined surface and the second inclined surface are both smooth surfaces, the first inclined surface is matched with the second inclined surface in angle, the length of the first inclined surface is larger than that of the second inclined surface, a half-tooth threaded rod 29 is movably connected on one side, the half-thread rod 29 is in threaded connection with the inner wall of the connecting pipe 2, and one end of the half-thread rod 29, which is positioned outside the connecting pipe 2, is fixedly connected with a rotating wheel 30.

Through rotating runner 30 can drive half tooth threaded rod 29 and screw into to connecting pipe 2 inside, and then promote sloping block 28, can make square bar 26 and first screw rod 12 vertically shift up through the extrusion of sloping block 28 and chute 27 to finally make lower coupling block 23 and last coupling block 22 mesh, can drive first screw rod 12 and rotate, will mix abundant material and carry to in the conveyer pipe 3. It is emphasized that the second motor 8 actually has two working modes, the first working mode is a material stirring mode, in this working mode, the lower coupling block 23 and the upper coupling block 22 are in a disengaged state, and the first screw 12 does not rotate; the second working mode is a material conveying mode, in which the lower coupling block 23 is engaged with the upper coupling block 22, and the second motor 8 drives the rotating shaft 10 and the first screw 12 to synchronously rotate, so as to convey the fully mixed material into the conveying pipe 3. Therefore, the second motor 8 and the rotating shaft 10 are used as a driving mechanism for material stirring on one hand and can also be used as a driving device for material conveying on the other hand.

Conveyer pipe 3 one side fixedly connected with third motor 13, inside the output shaft of third motor 13 run through conveyer pipe 3 lateral wall and extend to conveyer pipe 3, fixed mounting has second screw 14 on the output shaft of third motor 13, and the structure of second threaded rod and other structures inside the conveyer pipe 3 are prior art, do not do too much to describe here.

When in use, firstly, materials are evenly injected into the hopper 1 from the two feed inlets 31, the first motor 5 and the second motor 8 are started, the second motor 8 can drive the rotating shaft 10, the stirring rod 11, the movable rod 17, the connecting rod 16, the inner sleeve ring 15 and the upper coupling block 22 to slowly rotate after operating, the first motor 5 can drive the disc 7 to rotate through the transverse shaft 6, the outer sleeve ring 18 and the inner sleeve ring 15 can be driven to reciprocate up and down through the vertical rod 19 when the disc 7 rotates, and further the movable rod 17 can swing up and down while rotating, when the materials in the hopper 1 are fully stirred, the rotating wheel 30 can drive the half threaded rod 29 to revolve towards the inside of the transverse pipe 24 and push the inclined block 28 to move relative to the inclined groove 27, the square rod 26 and the first screw rod 12 can be moved up, the lower coupling block 23 is meshed with the upper coupling block 22, so as to drive the first screw rod 12 to rotate, and the mixed materials are conveyed into the conveying pipe 3 at the bottom, the material can be processed and extruded by starting the third motor 13. It is emphasized that in practice, the inventor finds that due to gravity, the density of the lower material of the hopper 1 is higher than that of the upper material, and particularly, material blockage is more likely to occur at the position where the cross-sectional area of the lower part of the hopper 1 is reduced, so that a regional two-stage strength stirring device is designed, and the stirring strength and the power of the lower region of the hopper 1 are higher than those of the upper region, so that the materials are fully stirred and the requirement of reducing energy consumption is met. The specific working process of the regional two-stage strength stirring device is as follows: the second motor 8 can drive the rotating shaft 10, the stirring rod 11, the movable rod 17, the connecting rod 16, the inner lantern ring 15 and the upper coupling block 22 to slowly rotate after running, the structure taking the stirring rod 11 as a core stirring part is taken as a primary stirring mechanism and mainly acts on the upper area of the hopper 1; the first motor 5 can drive the disc 7 to rotate after running, the outer sleeve ring 18 and the inner sleeve ring 15 can be driven to reciprocate up and down through the vertical rod 19 when the disc 7 rotates, and the inner sleeve ring 15 is in a slow rotating state at the moment, so that the movable rod 17 can swing up and down while rotating, and the structure is a secondary strength stirring mechanism and mainly acts on the lower area of the hopper 1. As can be seen from the above explanation, the first drive component with the core of the first electric machine 5 and the second drive component with the core of the second electric machine 8 are in an interactive relationship and functionally support each other.

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. The utility model provides a prevent stifled material type screw extruder compounding unloader, includes hopper, connecting pipe and conveyer pipe, its characterized in that: the connecting pipe is fixedly arranged at the bottom of the hopper, the conveying pipe is fixedly arranged at the bottom of the connecting pipe, the side surface of the hopper is fixedly connected with a mounting plate, the bottom of the mounting plate is fixedly connected with a first motor, an output shaft of the first motor is fixedly connected with a cross shaft, one end of the cross shaft penetrates through the side wall of the hopper and extends into the hopper, one end of the cross shaft, which is positioned in the hopper, is fixedly connected with a disc, the top of the hopper is provided with a second motor, the output shaft of the second motor is fixedly provided with the reduction gearbox, the reduction gearbox is fixedly connected with the top of the hopper, the output end of the reduction gearbox is fixedly connected with a rotating shaft, the bottom end of the rotating shaft penetrates through the top wall of the hopper and extends into the hopper, the rotating shaft is provided with a stirring rod, the bottom end of the first screw rod is provided with a control mechanism, one side of the conveying pipe is fixedly connected with a third motor, an output shaft of the third motor penetrates through the side wall of the conveying pipe and extends into the conveying pipe, and a second screw rod is fixedly installed on an output shaft of the third motor;

the anti-blocking mechanism comprises an inner sleeve ring, the inner sleeve ring is movably sleeved with a rotating shaft, connecting rods are hinged to two sides of the inner sleeve ring, a movable rod is hinged to one end, away from the inner sleeve ring, of each connecting rod, the end, away from the connecting rod, of each movable rod is hinged to the rotating shaft, an outer sleeve ring is movably connected to the outer side of the inner sleeve ring through a bearing, a vertical rod is movably connected to one side of the outer sleeve ring, and the top end of the vertical rod is movably;

the connecting mechanism comprises a cross rod, two ends of the cross rod are fixedly connected with the inner wall of a connecting pipe, a first vertical pipe is fixedly arranged in the middle of the cross rod, the top end of the first vertical pipe is movably connected with a rotating shaft through a bearing, the bottom end of the first vertical pipe is movably sleeved with the top end of a first screw rod, an upper coupling block and a lower coupling block are arranged in the first vertical pipe, the upper coupling block is fixedly connected with the bottom end of the rotating shaft, and the lower coupling block is fixedly connected with the top end of the first screw rod;

the control mechanism comprises a transverse pipe, two ends of the transverse pipe are fixedly connected with the inner wall of a connecting pipe, a second vertical pipe is fixedly arranged in the middle of the transverse pipe, a square rod is movably inserted in the second vertical pipe, the top end of the square rod is movably connected with the bottom end of a first screw rod through a bearing, an inclined groove is formed in one side of the square rod, an inclined block is arranged in the inclined groove, a half-tooth threaded rod is movably connected to one side of the inclined block and movably inserted in the transverse pipe, one end of the half-tooth threaded rod penetrates through the inner wall of the connecting pipe and extends to the outside of the connecting pipe, the half-tooth threaded rod is in threaded connection with the inner wall of the connecting pipe;

the side wall of the chute is provided with a first inclined surface, one side of the inclined block close to the first inclined surface is provided with a second inclined surface, the angle of the first inclined surface is matched with that of the second inclined surface, and the length of the first inclined surface is greater than that of the second inclined surface;

2. The anti-blocking type screw extruder mixing and blanking device of claim 1, which is characterized in that: the hopper and the bottom of the conveying pipe are respectively and fixedly connected with the first support and the second support, and two symmetrically distributed feed inlets are formed in the top of the hopper.