CN109016216B

CN109016216B - Plastic raw material stirring equipment for uniformly mixing materials

Info

Publication number: CN109016216B
Application number: CN201810831903.2A
Authority: CN
Inventors: 姚秀望; 卢海; 陈洪滔
Original assignee: Huangshan Paulson Decoration Materials Co ltd
Current assignee: Huangshan Paulson decoration materials Co.,Ltd.
Priority date: 2018-07-26
Filing date: 2018-07-26
Publication date: 2021-03-02
Anticipated expiration: 2038-07-26
Also published as: CN109016216A

Abstract

The invention discloses plastic raw material stirring equipment for uniformly mixing materials, which comprises a stirring chamber, a stirring shaft arranged in the stirring chamber, a stirring paddle connected with the stirring shaft, a driving piece for driving the stirring part to rotate and an air injection part, wherein the stirring shaft is arranged in the stirring chamber; the stirring chamber bottom be equipped with (mixing) shaft matched with bottom stirring subassembly, can drive when the (mixing) shaft rotates bottom stirring subassembly takes place to rotate and mixes in order to stir the material of stirring chamber bottom. According to the invention, the bottom stirring assembly is arranged at the bottom of the stirring chamber, so that the materials at the bottom of the stirring chamber can be mixed and stirred through the bottom stirring assembly, the materials deposited at the bottom of the stirring chamber are scattered and stirred, the uniform mixing of the materials is realized, and the mixing uniformity of the plastic raw materials is improved.

Description

Plastic raw material stirring equipment for uniformly mixing materials

Technical Field

The invention belongs to the technical field of plastic processing, and particularly relates to plastic raw material stirring equipment for uniformly mixing materials.

Background

The basic process of plastic product processing is to melt plastic particles and then extrude the plastic particles to form the plastic product, and the plastic particles and the flame retardant are generally required to be uniformly stirred in the early stage of flame retardant plastics. For example, chinese patent CN207388050U discloses "a plastic particle stirring mechanism", which comprises a stirring barrel, a first hopper, a second hopper, an end plate, a plurality of stirring blades, a stirring shaft, and a stirring shaft driving mechanism, wherein the upper end of the stirring barrel is provided with a feeding port, and the lower end of the stirring barrel is provided with a discharging port; the stirring shaft is rotatably and longitudinally arranged in the middle of the stirring barrel and is positioned below the feeding hole; the end plate is fixedly and horizontally arranged at the upper end of the stirring shaft, so that the upper side surface of the end plate is opposite to the feeding hole; the stirring blades are uniformly connected to the stirring shaft; the stirring shaft driving mechanism is in driving connection with the stirring shaft; and the port of the first hopper is butted with the feed inlet.

Under this kind of structure, be difficult to stir the raw materials of teeter chamber bottom usually, and then make the raw materials of teeter chamber bottom can't realize the homogeneous mixing, the raw materials mixes the effect poorly.

Disclosure of Invention

The invention provides the plastic raw material stirring equipment which is good in raw material mixing effect and capable of uniformly mixing materials, aiming at overcoming the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a plastic raw material stirring device for uniformly mixing materials comprises a stirring chamber, a stirring shaft arranged in the stirring chamber, a stirring paddle connected with the stirring shaft, a driving piece for driving the stirring part to rotate and an air injection part; the stirring chamber bottom be equipped with (mixing) shaft matched with bottom stirring subassembly, can drive when the (mixing) shaft rotates bottom stirring subassembly takes place to rotate and mixes in order to stir the material of stirring chamber bottom. According to the invention, the bottom stirring assembly is arranged at the bottom of the stirring chamber, so that the materials at the bottom of the stirring chamber can be mixed and stirred through the bottom stirring assembly, the materials deposited at the bottom of the stirring chamber are scattered and stirred, the uniform mixing of the materials is realized, and the mixing uniformity of the plastic raw materials is improved.

Further, the bottom stirring assembly comprises a rotating disc, a plurality of stirring ribs arranged on the upper surface of the rotating disc, a rotating shaft fixedly penetrating through the rotating disc and a rotation stopping structure for realizing rotation stopping matching between the rotating shaft and the stirring shaft; due to the arrangement of the rotation stopping structure, the rotating disc can be directly driven to rotate under the rotation of the stirring shaft, no other power source is needed to be arranged, the energy consumption is low, and the energy is saved.

Furthermore, the rotation stopping structure comprises an open slot arranged at the bottom of the stirring shaft, a rotation stopping concave part arranged in the open slot and a rotation stopping convex part arranged on the rotating shaft and matched with the rotation stopping concave part; the rotation stopping convex part can be inserted into the rotation stopping concave part, so that stable rotation stopping between the stirring shaft and the rotating shaft is realized, and the slip is not easy to occur.

Furthermore, a support column is arranged at the bottom of the stirring chamber, and a column groove for the support column to penetrate through is formed in the rotating disc; through the setting of support column, avoid the rolling disc bottom to hug closely the teeter chamber bottom, reduce the frictional force that receives when the rolling disc rotates.

Further, a bearing piece is arranged between the outer wall of the supporting column and the inner wall of the column groove; through the setting of bearing spare, reduce the frictional force between support column and the post groove, the rotation of rolling disc is more smooth and easy.

Furthermore, the gas injection part comprises a gas channel arranged in the stirring paddle, a plurality of gas injection holes arranged on the stirring paddle and communicated with the gas channel, a gas storage cavity arranged in the stirring shaft and communicated with the gas channel, a piston which can move up and down and is arranged in the gas storage cavity, and a displacement driving part for driving the piston to move up and down; in the rotation process of the stirring shaft, the driving part drives the piston to move up and down; when the piston moves downwards, the gas in the gas storage cavity can be ejected outwards through the gas ejecting hole; the air is sprayed outwards through the air spraying holes formed in the stirring paddle, so that when the stirring shaft rotates, the air spraying holes in the stirring paddle impact granular materials, the materials are sprayed towards the air, and a dispersing and mixing effect is generated in the upward movement process; secondly, the piston can be directly driven to move in the rotation process of the stirring shaft, and a power source is not needed to be additionally arranged to drive the piston to move, so that energy consumption is saved.

Furthermore, the displacement driving part comprises a movable rod connected with the piston, a through groove arranged in the stirring shaft and used for the movable rod to move up and down, a driving seat arranged on the stirring chamber and a track arranged on the driving seat; the upper part of the moving rod penetrates out of the upper part of the stirring chamber and is connected with a collision component matched with the track; the up-and-down movement driving of the moving rod is realized through the matching of the track and the collision component, the track can realize a good limiting and positioning effect on the collision component, and the situation that the collision component is derailed from the track when the stirring shaft rotates is avoided; and the conflict part cooperates with the track in the outside of teeter chamber, and it is comparatively convenient to maintain.

In summary, the invention has the following advantages: through having set up bottom stirring subassembly in the teeter chamber bottom, and then the material of this bottom stirring subassembly of accessible with the teeter chamber bottom mixes the stirring, breaks up the stirring with the material of deposit in the teeter chamber bottom, realizes the homogeneous mixing of material, improves the mixed degree of consistency of plastics raw materials.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is an enlarged view at C in fig. 1.

Fig. 4 is an enlarged view at B in fig. 1.

Fig. 5 is a schematic structural diagram of a driving seat in the invention.

Fig. 6 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a turntable according to a second embodiment of the present invention.

Fig. 8 is an enlarged view at C in fig. 6.

Fig. 9 is a schematic structural diagram of a third embodiment of the present invention.

Fig. 10 is a schematic view of the feed hopper and the feeding device in a third embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, 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.

Example 1

As shown in fig. 1-5, a plastic raw material stirring device for uniformly mixing materials comprises a stirring chamber 1, a stirring shaft 2 arranged in the stirring chamber, two stirring paddles 3 connected with the stirring shaft, a driving member 4 for driving the stirring member to rotate, and an air injection member; the upper part of the stirring shaft extends to the upper part of the stirring chamber and is connected with the driving piece; the driving piece is a motor directly purchased from the market, the specific model is not limited, and the stirring shaft is connected with an output shaft of the motor; the gas injection part comprises a gas channel 51, a plurality of gas injection holes 52, a gas storage cavity 53, a piston 54 and a displacement driving part, wherein the gas channel 51 is a cylindrical cavity arranged in the stirring paddle, the gas injection holes 52 are uniformly arranged on the outer surface of the stirring paddle at intervals, and the plurality of gas injection holes are communicated with the gas channel; the gas storage cavity 53 is arranged in the stirring shaft, and gas channels in the two stirring paddles are communicated with the gas storage cavity 53; the piston is arranged in the air storage cavity, and the piston 54 can move up and down in the air storage cavity; preferably, the outer wall of the piston 54 is provided with a first sealing element 542 and a second sealing element 54 which are matched with the inner wall of the air storage cavity 53; the first sealing element 542 and the second sealing element 54 are specifically sealing rings sleeved outside the piston, so that good sealing fit between the piston and the air storage cavity is realized.

The displacement driving component is used for driving the piston 54 to move up and down, and specifically, in the rotation process of the stirring shaft 2, the driving component drives the piston 54 to move up and down; when the piston 54 moves downwards, the gas in the gas storage cavity 53 can be ejected outwards through the gas ejection hole 52; by adopting the structure, stress stirring and air injection stirring are combined, so that good stirring of materials is realized, the material dispersion degree is high, the mixing effect is good, and the quality of the prepared plastic is improved; secondly, the piston can be directly driven to move in the rotation process of the stirring shaft, and a power source is not needed to be additionally arranged to drive the piston to move, so that energy consumption is saved.

Specifically, the displacement driving part comprises a moving rod 61, a through groove 62, a driving seat 63 and a rail 64, the through groove 62 is communicated with the air storage cavity, and the moving rod 61 is arranged in the through groove 62 and can move up and down in the through groove; the lower part of the moving rod 61 is fixedly connected with the piston, and the upper part of the moving rod penetrates out of the upper part of the stirring chamber and is connected with a collision component; the driving seat 63 is arranged at the upper part of the stirring chamber, the track is arranged on the driving seat 63, and the abutting part is matched with the track; specifically, the cross section of the driving seat is arranged in an L-shaped structure, and the track is arranged on a part, corresponding to the cross bar, of the driving seat; preferably, the collision component comprises an extension rod 71 and a sliding block 72, the extension rod 71 is formed by extending the upper part of the moving rod outwards, the sliding block 72 is a projection formed by protruding the upper surface of the extension rod upwards, and the upper surface of the projection is preferably an arc surface or a spherical surface; the track is located on the upper portion of the slider, and the upper portion of the slider 72 will engage the track 64; furthermore, an elastic part 21 is arranged in the stirring shaft 2, is a spring and is positioned in the through groove, one end of the elastic part is fixedly connected with the inner wall of the through groove, and the other end of the elastic part is fixedly connected with the moving rod; through the arrangement of the elastic piece, the movable rod can be ensured to be reset upwards after moving downwards, so that the gas storage cavity can realize gas supplement after gas is exhausted, and the piston can also be reset to the position at the upper part of the gas storage cavity, so that the normal operation of the next gas injection operation is ensured; secondly, the elastic component also can play the effect of support, guarantees that the slider cooperatees with the track all the time.

Further, 3 convex parts 641 are distributed on the track 64 at intervals along the circumferential direction, and a space is formed between every two adjacent convex parts; in the rotation process of the stirring shaft 2, when the stirring shaft rotates to a state that the sliding block is abutted against the convex part, the convex part 641 presses the sliding block downwards, so that the movable rod is driven to drive the piston 54 to move downwards, and at the moment, the elastic part is compressed; when the sliding block is rotated to a state that the sliding block is pressed against the spacing position, the elastic piece drives the moving rod 61 to reset upwards; the convex part is adopted to press the moving rod downwards, the pressing effect is good, the force of gas sprayed out by the gas spraying holes is strong, so that the material is sprayed upwards better, and the mixing effect is better; preferably, the height of the convex part 641 is smaller than that of the track 64, so that the slider is prevented from falling off the track during rotation, and the failure rate is reduced.

Further, a one-way air outlet piece 521 is arranged on the air injection hole 52, a first channel 541 is arranged in the piston 54, a second channel 611 communicated with the first channel is arranged in the moving rod 61, and preferably, a one-way air inlet piece 612 is arranged on the second channel 611; the upper part of the second channel 611 is communicated to the upper part of the moving rod, and the one-way air inlet 612 is arranged at the upper part of the second channel 611; the one-way air outlet piece 521 and the one-way air inlet piece 612 are all one-way exhaust valves purchased from the market; through the arrangement of the one-way air outlet piece 521, the air jetting holes can only jet air outwards, the condition of inward air suction is avoided, the condition that particle materials are blocked at the air jetting holes or adsorbed and enclosed at the positions of the air jetting holes when the air jetting holes suck air inwards is avoided, the materials are always in a dispersed state, the mixing is convenient, the mixing effect is good, and the mixing uniformity of the materials after the stirring is finished is high;

through the arrangement of the one-way air inlet part 612, air can be supplied into the air storage cavity through the one-way air inlet part to supplement air in the air storage cavity when the moving rod drives the piston to move upwards; secondly, the one-way air inlet piece can not jet air outwards, so that when the piston moves downwards, air in the air storage cavity is always jetted outwards from the air jetting hole, and the phenomenon that the air is jetted outwards from the second channel to weaken the air jetting force of the air jetting hole is avoided.

In order to conveniently disassemble and assemble the stirring paddle, the stirring paddle and the stirring shaft are detachably connected; specifically, two insertion grooves 22 are arranged on the stirring shaft 2, and the two insertion grooves 22 are both communicated with the gas storage cavity 53; an extension cylinder 31 is formed by extending the end part of the stirring paddle 3 outwards, an external thread is arranged on the extension cylinder 31, and an internal thread is arranged on the inner wall of the insertion groove 22, so that the extension cylinder and the insertion groove 22 can be screwed; the stable connection between the stirring paddle and the stirring shaft is realized through the arrangement of the extension cylinder, and the condition of leakage at the connection part is effectively avoided; preferably, the extension cylinder 31 is provided with an opening 311, and when the extension cylinder is inserted into the insertion groove, the air storage chamber 53 and the air passage can be communicated through the opening 311.

Example 2

As shown in fig. 2, 4-5, 6-8, the present embodiment differs from embodiment 1 in that: a bottom stirring component matched with the stirring shaft 2 is arranged at the bottom of the stirring chamber 1, and the stirring shaft 2 can drive the bottom stirring component to rotate when rotating so as to stir and mix the materials at the bottom of the stirring chamber 1; specifically, the bottom stirring assembly comprises a rotating disc 81, a plurality of stirring ribs 82, a rotating shaft 83 and a rotation stopping structure, wherein the stirring ribs 82 are arc-shaped and are uniformly distributed on the upper surface and the lower surface of the rotating disc at intervals along the circumferential direction of the rotating disc; the rotating shaft 83 is fixedly arranged at the central part of the rotating disc in a penetrating mode, the rotation stopping structure is used for achieving rotation stopping matching between the rotating shaft 83 and the stirring shaft 2, and then the stirring shaft can directly drive the rotating shaft to rotate when rotating so as to drive the rotating disc to rotate.

Specifically, the rotation stopping structure includes an open slot 84, a rotation stopping concave portion 85 and a rotation stopping convex portion 86; the open slot 84 is a cylindrical opening arranged at the bottom of the stirring shaft, the rotation-stopping convex parts 86 are uniformly distributed on the outer wall of the rotating shaft at intervals along the circumferential direction, and the rotation-stopping concave parts 85 are uniformly distributed on the inner wall of the open slot 84 at intervals along the circumferential direction; when the rotating shaft penetrates into the stirring shaft, the rotation stopping convex part is inserted into the rotation stopping concave part, and rotation stopping of the rotating shaft and the rotation stopping concave part is realized.

Preferably, the bottom of the stirring chamber 1 is provided with a support column 13 which is fixedly connected to the bottom of the stirring chamber through a screw; the bottom surface of the rotating disc 81 is provided with a column groove 811 for the support column to penetrate through, and further, a bearing part 14 is arranged between the outer wall of the support column 13 and the inner wall of the column groove 811, and the bearing part is a rolling bearing, so that the friction force between the support column and the column groove can be reduced.

Example 3

As shown in fig. 2 to 5 and 9 to 10, the present embodiment is different from embodiment 1 in that: a feeding hole 15 is formed in the upper part of the stirring chamber 1, and a feeding pipe 16 is connected to the feeding hole; a feed hopper 10 is arranged on one side of the lower part of the stirring chamber 1, and materials in the feed hopper 10 are conveyed to the feed port 15 through a feeding device; specifically, the feeding device comprises a conveying pipe 91, a first blowing piece 92 and a second blowing piece 93, wherein one end of the conveying pipe 91 is communicated with the feeding hopper 10, and the other end of the conveying pipe 91 is communicated with the feeding pipe 16; the first blowing part 92 and the second blowing part 93 are air blowers, the first blowing part 92 is arranged at the joint of the feed hopper 10 and the conveying pipe 91, specifically, the end part of the conveying pipe 91 is connected with an air outlet of the first blowing part 92, the bottom of the feed hopper 10 is connected with an arc-shaped first material guide plate 101 made of metal, an air ventilation interval 102 for air to pass through is arranged between the first material guide plate 101 and the inner wall of the conveying pipe 91, and then the air blown out by the first blowing part 92 can enter the conveying pipe 91 through the air ventilation interval 102 so as to suck the materials in the feed hopper into the conveying pipe; the second blowing piece 93 is arranged at the joint of the conveying pipe 91 and the feeding pipe 16, in particular, the end part of the feeding pipe 16 is connected with the air outlet of the second blowing piece 93; the delivery pipe 91 with the one end that the inlet pipe 16 matched with is equipped with the curved second stock guide 911 that the metal was made, this second stock guide 911 with there is the clearance 912 that the gas passed through between the inlet pipe 16 inner wall, and the gaseous accessible that second blows 93 blew off gets into inlet pipe 16 through this clearance 912 to inhale the material in the delivery pipe to the inlet pipe 16 in, and get into in the teeter chamber through the feed inlet.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all 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.

Claims

1. A plastic raw material stirring device for uniformly mixing materials comprises a stirring chamber, a stirring shaft arranged in the stirring chamber, a stirring paddle connected with the stirring shaft, a driving piece for driving the stirring shaft to rotate and an air injection part; the method is characterized in that: a bottom stirring assembly matched with the stirring shaft is arranged at the bottom of the stirring chamber, and the stirring shaft can drive the bottom stirring assembly to rotate so as to stir and mix the materials at the bottom of the stirring chamber;

the bottom stirring assembly comprises a rotating disc, a plurality of stirring ribs arranged on the upper surface of the rotating disc, a rotating shaft fixedly penetrating the rotating disc and a rotation stopping structure for realizing rotation stopping matching between the rotating shaft and the stirring shaft;

the rotation stopping structure comprises an open slot arranged at the bottom of the stirring shaft, a rotation stopping concave part arranged in the open slot and a rotation stopping convex part arranged on the rotating shaft and matched with the rotation stopping concave part;

a support column is arranged at the bottom of the stirring chamber, and a column groove for the support column to penetrate is formed in the rotating disc;

a bearing piece is arranged between the outer wall of the supporting column and the inner wall of the column groove;

the gas injection component comprises a gas channel arranged in the stirring paddle, a plurality of gas injection holes arranged on the stirring paddle and communicated with the gas channel, a gas storage cavity arranged in the stirring shaft and communicated with the gas channel, a piston which can move up and down and is arranged in the gas storage cavity, and a displacement driving component for driving the piston to move up and down; in the rotation process of the stirring shaft, the driving part drives the piston to move up and down; when the piston moves downwards, the gas in the gas storage cavity can be ejected outwards through the gas ejecting hole;

the displacement driving part comprises a movable rod connected with the piston, a through groove arranged in the stirring shaft and used for the movable rod to move up and down, a driving seat arranged on the stirring chamber and a track arranged on the driving seat; the upper part of the moving rod penetrates out of the upper part of the stirring chamber and is connected with a collision component matched with the track;

a first sealing element and a second sealing element which are matched with the inner wall of the air storage cavity are arranged on the outer wall of the piston; the first sealing element and the second sealing element are sealing rings sleeved outside the piston, so that good sealing fit between the piston and the air storage cavity is realized;

the collision component comprises an extension rod and a sliding block, the extension rod is formed by extending the upper part of the movable rod outwards, the sliding block is a convex block formed by protruding the upper surface of the extension rod upwards, and the upper surface of the convex block is an arc surface or a spherical surface; the track is positioned at the upper part of the sliding block, and the upper part of the sliding block is matched with the track; an elastic part is arranged in the stirring shaft, is a spring and is positioned in the through groove, one end of the elastic part is fixedly connected with the inner wall of the through groove, and the other end of the elastic part is fixedly connected with the extension rod;

3 convex parts are distributed at intervals along the circumferential direction of the track, a space is reserved between every two adjacent convex parts, when the stirring shaft rotates and the slide block is in a state of abutting against the convex parts, the convex parts press the slide block downwards, the movable rod is driven to drive the piston to move downwards, the elastic part is compressed at the moment, the height of the convex parts is smaller than that of the track, the slide block is ensured not to fall out of the track when rotating, and the failure rate is reduced;

the gas injection hole is provided with a one-way gas outlet piece, the piston is internally provided with a first channel, the moving rod is internally provided with a second channel communicated with the first channel, and the second channel is provided with a one-way gas inlet piece; the upper part of the second channel is communicated to the upper part of the movable rod, and the one-way air inlet piece is arranged at the upper part of the second channel;

the stirring shaft is provided with two insertion grooves which are communicated with the gas storage cavity; the end part of the stirring paddle extends outwards to form an extension cylinder, an external thread is arranged on the extension cylinder, an internal thread is arranged on the inner wall of the splicing groove, so that the extension cylinder and the splicing groove can be screwed, an opening is arranged on the extension cylinder, and when the extension cylinder is inserted into the splicing groove, the air storage cavity and the gas channel can be communicated through the opening;

a feed inlet is formed in the upper part of the stirring chamber, and a feed pipe is connected to the feed inlet; a feed hopper is arranged on one side of the lower part of the stirring chamber, and materials in the feed hopper are conveyed to the feed inlet through a feeding device; the feeding device comprises a conveying pipe, a first blowing piece and a second blowing piece, wherein one end of the conveying pipe is communicated with the feeding hopper, and the other end of the conveying pipe is communicated with the feeding pipe; the first air blowing part and the second air blowing part are air blowers, the first air blowing part is arranged at the joint of the feed hopper and the conveying pipe, the end part of the conveying pipe is connected with an air outlet of the first air blowing part, the bottom of the feed hopper is connected with a first arc-shaped guide plate made of metal, an air ventilation interval for air to pass through is formed between the first guide plate and the inner wall of the conveying pipe, and then the air blown out by the first air blowing part can enter the conveying pipe through the air ventilation interval so as to suck the materials in the feed hopper into the conveying pipe; the second air blowing piece is arranged at the joint of the conveying pipe and the feeding pipe, and the end part of the feeding pipe is connected with an air outlet of the second air blowing piece; the conveyer pipe with inlet pipe matched with one end is equipped with the curved second stock guide that the metal was made, this second stock guide with the clearance that the air feed passed through has between the inlet pipe inner wall, and the second blows the gaseous accessible that the piece blew off and gets into the inlet pipe in to inhale the material in the conveyer pipe to get into to the agitator chamber through the feed inlet.