CN212399989U

CN212399989U - Stirring device for producing PE plastic granules

Info

Publication number: CN212399989U
Application number: CN202020433702.XU
Authority: CN
Inventors: 张万宁; 李静利; 孙花瑞; 李杏伟; 刘娅琳
Original assignee: Henan Huixin Plastic Industry Co Ltd
Current assignee: Henan Huixin Plastic Industry Co Ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2021-01-26
Anticipated expiration: 2030-03-30

Abstract

The utility model provides an agitating unit of production PE plastic pellet, relate to the processing field of plastics, which comprises a housin, the bottom of casing is rotated and is connected with the pivot, the pivot lower extreme stretches out the casing and is connected with drive arrangement, the fixed main knife rest that is equipped with in the pivot, main knife rest branch is curved knife rest and knife rest, curved knife rest can be dismantled and be connected with curved spiller, curved spiller and the contact of shells inner wall, and the shape of the cutting edge of curved spiller and the lateral wall of casing and bottom surface junction is similar, can dismantle on the knife rest and be connected with flat spiller, the cutting edge of flat spiller and the bottom contact of casing, still fix the stirring leaf that is equipped with an slope in the pivot. The utility model discloses set up curved scraper and flat scraper bottom the casing, curved scraper scrapes the plastic pellet that bonds in the dead angle position between shells inner wall and the bottom surface, and the plastic pellet on the casing bottom surface is scraped to the flat scraper, prevents effectively that the plastic pellet of heating from bonding on the casing is inside.

Description

Stirring device for producing PE plastic granules

Technical Field

The utility model belongs to the technical field of the processing of plastics and specifically relates to an agitating unit of production PE plastic pellet.

Background

The hot mixer is the indispensable important equipment in PE plastics preparation process, and the plastic pellet gets into the hot mixer and is heated the stirring and be even, exports the mixer finally. The hot stirring heats the plastic granules while stirring, the heating device is positioned at the bottom of the hot stirring machine, and the heated plastic granules are easily adhered to the inner wall and the bottom of the stirring machine and are difficult to clean.

SUMMERY OF THE UTILITY MODEL

To the above situation, in order to overcome the defects of the prior art, the present invention aims to provide a stirring device for producing PE plastic pellets, which prevents the heated PE plastic pellets from sticking to the inner wall of the stirring machine.

The solution is that the stirring device for producing PE plastic granules comprises a cylindrical shell, a feed inlet and a discharge outlet are arranged on the shell, a vertical auger is rotatably connected in the shell, it is characterized in that the bottom of the shell is rotatably connected with a rotating shaft, the rotating shaft is coaxial with the auger but not contacted with the auger, the lower end of the rotating shaft extends out of the shell and is connected with a driving device, a main knife rest is fixedly arranged on the rotating shaft, the main knife rest is branched into a bent knife rest and a flat knife rest, the curved knife rest is closer to the side wall of the shell than the flat knife rest, the curved knife rest is detachably connected with a curved shovel knife, the curved shovel knife is contacted with the inner wall of the shell, and the shape of the cutting edge of the curved scraper knife is similar to that of the joint of the side wall and the bottom surface of the shell, the flat knife rest is perpendicular to the main knife rest and extends downwards, the flat knife rest is detachably connected with the flat scraper knife, the cutting edge of the flat scraper knife is in contact with the bottom of the shell, and the rotating shaft is at least fixedly provided with an inclined stirring blade.

Preferably, all set up jaggedly on curved knife rest and the knife rest, curved shovel sword includes smooth transition connection's first connecting portion and first cutting edge portion, and first connecting portion are arranged in the breach of curved knife rest and pass through bolted connection with the curved knife rest, and the lateral wall and the bottom surface junction contact of first cutting edge portion and casing, the flat shovel sword includes smooth transition connection's second connecting portion and second cutting edge portion, and the second connecting portion are arranged in the breach of flat knife rest and pass through bolted connection with the curved knife rest, and second cutting edge portion contacts with the bottom surface of casing.

Preferably, an elastic part is arranged between the first connecting part and the bent tool rest, and an elastic part is arranged between the second connecting part and the flat tool rest.

Preferably, the curved blade carrier and the flat blade carrier are arranged in a staggered mode, and the motion trail of the curved blade and the motion trail of the flat blade have a common area.

Preferably, the casing divide into output barrel and agitator barrel, and the output barrel is located agitator barrel top and communicates with agitator barrel, the clearance between the outer edge of auger and the inner wall of output barrel is less than the minimum external diameter of plastic pellet, the feed inlet is seted up on agitator barrel, the discharge gate is seted up on the output barrel, the bottom side of agitator barrel is opened there is the discharge opening.

Preferably, the bottom of the stirring barrel is fixedly provided with a heating plate, a protective cover is arranged outside the heating plate, and the protective cover is communicated into the output barrel through a pipeline.

The utility model has the advantages that: compared with the prior art, the novel point that the curved scraper knife and the flat scraper knife are arranged at the bottom of the shell is adopted, the curved scraper knife scrapes plastic grains bonded in the dead angle position between the inner wall of the shell and the bottom surface, and the flat scraper knife scrapes the plastic grains on the bottom surface of the shell, so that the heated plastic grains are effectively prevented from being bonded on the inner part of the shell; meanwhile, the stirring blade is matched with the packing auger to stir and convey the materials, so that the main function of thermal stirring is completed.

Drawings

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

FIG. 2 is a schematic view of the structure of the blade holder, the flat blade and the curved blade;

fig. 3 is a top view of the tool holder.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in figures 1-3, a stirring device for producing PE plastic granules comprises a cylindrical shell 1, a feed inlet and a discharge outlet 102 are arranged on the shell 1, a vertical packing auger 2 is rotatably connected in the shell 1, the upper end of the packing auger 2 is connected with a belt wheel and a motor for transmission according to the prior art, the stirring device is characterized in that the bottom of the shell 1 is rotatably connected with a rotating shaft 3, the rotating shaft 3 is coaxial with the packing auger 2 but not contacted with the packing auger 2, the lower end of the rotating shaft 3 extends out of the shell 1 and is connected with a driving device, the rotating shaft 3 is connected with different motors with the packing auger 2 to realize the functions of respective driving, a main knife rest 4 is fixedly arranged on the rotating shaft 3, the main knife rest 4 is branched into a bent knife rest 5 and a flat knife rest 6, the bent knife rest 5 is used for fixing a bent shovel knife 8, the flat knife rest 6 is used for fixing a flat shovel knife 9, the bent knife rest 5, the curved scraper knife 8 is contacted with the inner wall of the shell 1, the shape of the joint of the cutting edge of the curved scraper knife 8 and the side wall and the bottom surface of the shell 1 is similar, the heat mixer puts a heating source at the bottom, so the bottom of the shell 1 is easy to bond plastic granules, the curved scraper knife 8 is used for cleaning a dead angle area at the bottom of the shell 1, in order to be attached to the inner wall of the shell 1, the inner side wall and the bottom surface of the shell 1 are preferably in fillet transition, the curved scraper knife 8 scrapes off the plastic granules bonded in the corner of the shell 1 while the rotating shaft 3 drives the curved scraper frame 5 to rotate, the flat scraper frame 6 is perpendicular to the main scraper frame 4 and extends downwards, the flat scraper knife 9 is detachably connected onto the flat scraper frame 6, the cutting edge of the flat scraper knife 9 is contacted with the bottom of the shell 1, the flat scraper knife 9 is used for cleaning the plastic granules on the bottom of the shell 1, the bottom of the shell 1 is an arc bottom, the cutting edge of the flat scraper knife, in order to reach the purpose with the contact of casing 1 bottom surface, flat knife rest 6 stretches out downwards in order to reduce the distance of connection position to casing 1 bottom surface, shortens the resistance arm length of flat scraper knife 9 during operation promptly, and the one end that flat scraper knife 9 is close to pivot 3 links to each other with pivot 3, prevents that 3 roots of pivot from bonding the plastic pellet, still fixed stirring leaf 11 that is equipped with an slope on the pivot 3 at least. The main tool rest 4 and the main shaft occupy the position of the lower end of the packing auger 2, the blades on the packing auger 2 cannot drive plastic grains at the lower end of the shell 1 to rise, the stirring blades 11 are obliquely arranged, the plastic grains can be conveyed upwards while stirring, and the packing auger 2 carries the conveyed plastic grains to be further stirred and conveyed upwards to the discharge hole 102 for discharge.

Notch 7 has all been seted up on curved knife rest 5 and the knife rest 6, for convenient fixed curved scraper 8 and flat scraper 9, notch 7 will be seted up between two parties, makes curved scraper 8 or flat scraper 9 be located the state by curved knife rest 5 or the centre gripping of flat knife rest 6 when breach 7 middle time, curved scraper 8 includes smooth transitional coupling's first connecting portion 81 and first cutting edge portion 82, and first connecting portion 81 is located curved knife rest 5's breach 7 and passes through bolted connection with curved knife rest 5, and first cutting edge portion 82 contacts with casing 1's lateral wall and bottom surface junction, flat scraper 9 includes smooth transitional coupling's second connecting portion 91 and second cutting edge portion 92, and second connecting portion 91 is located flat knife rest 6's breach 7 and passes through bolted connection with curved knife rest 5, and second cutting edge portion 92 contacts with casing 1's bottom surface. The first connecting part 81 and the first blade part 82 of the shovel blade 8 are in curved surface transition, the second connecting part 91 and the second blade part 92 of the shovel blade 9 are also in curved surface transition, and the blades of the shovel blade and the shovel blade face to one side of the shovel blade which is in active contact with plastic grains; the shovel blade 8 and the shovel blade 9 are both wearing parts, the wearing degree of the shovel blade can be accelerated by long-term friction and impact between the shovel blade 8 and the shell 1 and plastic particles, in order to improve the interchangeability of the wearing parts, the shovel blade 9 and the shovel blade 8 are arranged in a detachable mode, the shovel blade is convenient to replace in time after being worn, and the shell 1 is not limited to be provided with a manhole or an inspection window to achieve the purpose of inspection.

An elastic part 10 is arranged between the first connecting part 81 and the bent tool rest 5, and an elastic part 10 is arranged between the second connecting part 91 and the flat tool rest 6. The curved scraper knife 8 and the flat scraper knife 9 can bear strong and uninterrupted impact force in the using process, the impact force is transmitted to the rotating shaft 3 through the curved scraper frame 5 and the flat scraper frame 6 to cause overall impact of equipment, the service life of the equipment is shortened, the first connecting part 81 is arranged in the middle of the notch 7 of the curved scraper frame 5, the elastic parts 10 are arranged on two sides of the first connecting part 81, the elastic parts 10 are not limited to be sleeved on bolts, the elastic parts 10 are springs, rubber rings or elastic gaskets, the impact force received by the curved scraper frame 5 or the flat scraper frame 6 is eliminated or buffered by means of the elastic parts 10, and therefore the service lives of the main scraper frame 4 and the rotating shaft 3 are prolonged.

The curved cutter frame 5 and the flat cutter frame 6 are arranged in a staggered mode, and the motion trail of the curved scraper knife 8 and the motion trail of the flat scraper knife 9 have a common area. The curved knife rest 5 and the flat knife rest 6 are staggered along the length direction of the main knife rest 4 after being branched from the main knife rest 4, namely the curved scraper knife 8 and the flat scraper knife 9 are not in contact interference, the curved scraper knife 8 clears plastic grains at the corners of the shell 1, the flat scraper knife 9 clears plastic grains on the large face of the bottom surface of the shell 1, the curved scraper knife 8 and the flat scraper knife 9 can not be cleaned between the large face and the corners during working, an annular bonding belt can be formed after the curved scraper knife 8 and the flat scraper knife 9 are long-term, so that the working area of the flat scraper knife 9 and the working area of the curved scraper knife 8 are required to have intersection, the main knife rest 4 is overlooked, the width of the working intersection area of the curved scraper knife 8 and the flat.

The casing 1 divide into output barrel 103 and stirring barrel 104, and output barrel 103 is located stirring barrel 104 top and communicates with stirring barrel 104, the clearance between the outer edge of auger 2 and the inner wall of output barrel 103 is less than the minimum external diameter of plastic pellet, feed inlet 101 is seted up on stirring barrel 104, discharge gate 102 is seted up on output barrel 103, the bottom side of stirring barrel 104 is opened there is discharge opening 105. The material directly falls into the stirring cylinder 104 after entering the feeding port, is stirred by the stirring blade 11 and then is upwards output by the packing auger 2, the smaller the distance between the outer edge of the packing auger 2 and the inner wall of the output cylinder 103 is, the higher the effective conveying rate is, the plastic grains are prevented from falling off, and the discharge port 102 is downward inclined, so that the plastic grains can be rapidly output and can not be adhered in the discharge port 102; the discharge opening 105 is normally closed for releasing plastic pellets remaining in the mixing drum 104.

The bottom of the stirring cylinder 104 is fixedly provided with a heating plate 12, a protective cover 13 is arranged outside the heating plate 12, and the protective cover 13 is communicated into the output cylinder 103 through a pipeline. The heating plate 12 is placed at the bottom of the stirring cylinder 104 to heat the plastic granules in the shell 1, and when the plastic granules are too much, heat is gathered at the bottom of the shell 1 and cannot rise, so that a communication pipeline on the protective cover 13 of the heating plate 12 leads to the output cylinder 103 on the upper part of the shell 1, a heat source is conveyed to the upper part of the shell 1, and the plastic granules are prevented from being heated unevenly.

When the utility model is used, plastic grains are poured into the stirring cylinder 104 from the feeding hole 101, the heating plate 12 and the rotating shaft 3 are started, the stirring blade 11 is used for stirring the plastic grains while general heating is carried out, the curved scraper 8 and the flat scraper 9 continuously scrape the plastic grains bonded on the bottom of the shell 1, after the plastic grains are stirred for a set time, the auger 2 is started to upwards convey the plastic grains, and the plastic grains are sent out through the discharging hole 102; when the plastic grains conveyed by the stirring blades 11 are not enough to be driven by the auger 2 to rise, the discharge opening 105 is opened, and the residual plastic grains can be output from the discharge opening 105 under the pushing action of the curved shovel blade 8 and the flat shovel blade 9, so that no residual materials exist in the shell 1.

The above-mentioned embodiments are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design concept of the present invention should be included in the protection scope defined by the claims of the present invention.

Claims

1. The stirring device for producing the PE plastic granules comprises a cylindrical shell (1), wherein a feeding hole and a discharging hole (102) are formed in the shell (1), a vertical packing auger (2) is connected in the shell (1) in a rotating manner, and the stirring device is characterized in that a rotating shaft (3) is connected to the bottom of the shell (1) in a rotating manner, the rotating shaft (3) and the packing auger (2) are coaxial but not in contact, the lower end of the rotating shaft (3) extends out of the shell (1) and is connected with a driving device, a main knife rest (4) is fixedly arranged on the rotating shaft (3), the main knife rest (4) is branched into a bent knife rest (5) and a flat knife rest (6), the bent knife rest (5) is close to the side wall of the shell (1) compared with the flat knife rest (6), a bent shovel knife (8) is detachably connected to the bent knife rest (5), the bent shovel knife (8) is in contact with the inner wall of the shell (1), and, flat knife rest (6) perpendicular to main knife rest (4) and downwardly extending, can dismantle on flat knife rest (6) and be connected with flat spiller (9), the cutting edge of flat spiller (9) and the bottom contact of casing (1), still fixed stirring leaf (11) that are equipped with an slope on pivot (3) at least.

2. The stirring device for producing PE plastic granules according to claim 1, wherein a notch (7) is formed in each of the bending knife rest (5) and the flat knife rest (6), the bending knife (8) comprises a first connecting portion (81) and a first blade portion (82) which are connected in a smooth transition manner, the first connecting portion (81) is located in the notch (7) of the bending knife rest (5) and is connected with the bending knife rest (5) through a bolt, the first blade portion (82) is in contact with the connecting portion of the side wall and the bottom surface of the shell (1), the flat knife (9) comprises a second connecting portion (91) and a second blade portion (92) which are connected in a smooth transition manner, the second connecting portion (91) is located in the notch (7) of the flat knife rest (6) and is connected with the bending knife rest (5) through a bolt, and the second blade portion (92) is in contact with the bottom surface of the shell (1).

3. Stirring device for the production of PE plastic pellets according to claim 2, characterized in that between the first connection (81) and the bent blade holder (5) there is a spring (10) and between the second connection (91) and the flat blade holder (6) there is a spring (10).

4. A stirring device for producing PE plastic granules according to claim 1 or 3, wherein the bent blade holders (5) and the flat blade holders (6) are staggered, and the movement locus of the bent blade (8) and the movement locus of the flat blade (9) have a common area.

5. The stirring device for producing PE plastic granules according to claim 1, wherein the casing (1) is divided into an output cylinder (103) and a stirring cylinder (104), the output cylinder (103) is located above the stirring cylinder (104) and is communicated with the stirring cylinder (104), a gap between the outer edge of the screw conveyor (2) and the inner wall of the output cylinder (103) is smaller than the minimum outer diameter of the plastic granules, the feeding port (101) is arranged on the stirring cylinder (104), the discharging port (102) is arranged on the output cylinder (103), and the bottom side of the stirring cylinder (104) is provided with the discharging port (105).

6. The stirring device for producing PE plastic granules according to claim 5, wherein the heating plate (12) is fixedly arranged at the bottom of the stirring cylinder body (104), the protective cover (13) is arranged outside the heating plate (12), and the protective cover (13) is communicated into the output cylinder body (103) through a pipeline.