CN209999529U

CN209999529U - pure device of plastic powder

Info

Publication number: CN209999529U
Application number: CN201920621038.9U
Authority: CN
Inventors: 王彬; 潘礼德
Original assignee: JINHUA JINQIU ENVIRONMENT PROTECTION WATER PROCESSING Co Ltd
Current assignee: JINHUA JINQIU ENVIRONMENT PROTECTION WATER PROCESSING Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-01-31
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a pure device of plastic grinding, including the feeder hopper that communicates in proper order, smash the cabin, feed mechanism and liquid nitrogen cooling mechanism, liquid nitrogen cooling mechanism include with liquid nitrogen container and liquid nitrogen transfer passage, liquid nitrogen transfer passage end is connected the liquid nitrogen container, end and feeder hopper intercommunication in addition, it includes the hank moving motor to smash the cabin, the rolling disc with the output shaft of hank moving motor, the equidistant angular distribution has crushing roller on the circumference of rolling disc, it supplies the gaseous combustion gas runner to be equipped with in the crushing cabin, this pure device of plastic grinding carries out cooling treatment through the raw materials of liquid nitrogen in to the feeder hopper, raw materials embrittlement, it smashes at crushing under-deck to make the raw materials easier, thereby the condition of having avoided plastic to be degraded to destroy the molecular structure of plastics takes place, prevented simultaneously that plastics produce the phenomenon that the conglobation is even in crushing in-process plastics, smash the granule of plastics more thin plasticity through multiaxis claw formula crushing roller, the crushing efficiency of.

Description

pure device of plastic powder

Technical Field

The utility model relates to a plastic processing equipment field especially relates to pure device of kinds of plastic powder.

Background

In the plastic processing industry, the plastic processing needs to be carried out through the process of crushing, the traditional crusher generates heat due to the high-speed running friction of a crushing grinding disc in the plastic crushing process, the plastic which is being crushed is easily melted and agglomerated by the heat, the plastic cannot be refined, and the molecular mechanism of the plastic can be damaged, so that the original performance of the plastic is lost, the size of the crushed plastic particles is not due to the traditional crusher, and the plastic is difficult to crush to micron-sized particles.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the pure device of kinds of plastic plastics powder that can reach the micron order crushing effect is provided to the problem that prior art exists.

The utility model provides a pure device of kinds of plastic powder, including feeder hopper, crushing cabin and the discharge mechanism that communicates in proper order, its characterized in that still includes liquid nitrogen cooling mechanism, liquid nitrogen cooling mechanism include with liquid nitrogen container and liquid nitrogen transfer passage, liquid nitrogen transfer passage end is connected the liquid nitrogen container, end and feeder hopper intercommunication in addition, smash the cabin including the hank motor, with the output shaft's of hank motor rolling disc, the equidistant angular distribution has crushing roller on the circumference of rolling disc, smash the intra-cabin and be equipped with the gas supply combustion gas runner.

, the crushing roller comprises a plurality of equally spaced hinge shafts, the hinge shafts are axially extended and distributed with tooth claw blades for cutting crushed plastics, and the tooth claw blades on adjacent hinge shafts cut plastics when the hinge shafts rotate.

, the feeding hopper and the liquid nitrogen conveying channel are both in a Venturi structure.

, the discharging mechanism comprises a cyclone separator for gas-solid separation and an air conveying pipeline for communicating the cyclone separator with the crushing cabin, wherein the end of the air conveying pipeline is communicated with the bottom of the crushing cabin, the end of the air conveying pipeline is communicated with a feeding hole of the cyclone separator, the feeding hole of the cyclone separator is positioned in the upper cavity of the cyclone separator and positioned on the side surface of the cyclone separator, and the air conveying pipeline is obliquely and upwards arranged towards the feeding hole of the cyclone separator.

, the top of the cyclone separator is an exhaust hole, the bottom of the cyclone separator is provided with a discharge hole for finished plastic particles, and the cavity at the lower part of the feed inlet of the cyclone separator is a cone with a downward reduced radial distance.

, arranging a draught fan between the air supply pipeline and the bottom of the crushing cabin, sucking the crushed plastic into the air supply pipeline through the draught fan, and allowing the crushed plastic to enter the cyclone separator through the air supply pipeline.

Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a pure device of plastic plastics powder carries out cooling treatment through the raw materials of liquid nitrogen in to the feeder hopper, raw materials embrittlement, it smashes at crushing under-deck more easily to make the raw materials, thereby it takes place to have avoided plastic plastics to be destroyed the molecular structure's of plastics condition by the degradation, the phenomenon that plastics produced the conglomeration and cohere at crushing in-process simultaneously has been prevented produces, it is thinner with the kibbling granule of plastics through multiaxis claw formula crushing roller, the efficiency of smashing of plastic plastics is improved, and the plastic granules that form is more even, cyclone both can arrange away the steam of smashing the production, can also arrange away the dust that produces when the plastics cutting is broken, make the plastic granules surface after smashing more smooth clean.

Drawings

Fig. 1 is a schematic diagram of a simple structure of plastic crushing devices of this embodiment.

Fig. 2 is a schematic view of the internal structure of the cyclone separator in the plastic crushing apparatus of this embodiment.

Detailed Description

The present invention will be described in further detail in with reference to the following embodiments.

As shown in fig. 1 to 2, the plastic crushing device comprises a feeding hopper 100, a crushing chamber 200, a discharging mechanism 300 and a liquid nitrogen cooling mechanism 400 which are sequentially communicated, wherein the liquid nitrogen cooling mechanism 400 comprises a liquid nitrogen tank 410 and a liquid nitrogen conveying channel 420, the liquid nitrogen conveying channel 420 end is connected with the liquid nitrogen tank 410, the end is communicated with the feeding hopper 100, the crushing chamber 200 comprises a twisting motor 210, a rotating disc 230 connected with an output shaft of the twisting motor 210, crushing rollers 220 are distributed on the rotating disc 230 at equal intervals in the circumferential direction, and a flow passage (not shown in the drawings) for gas exhaust is arranged in the crushing chamber 200.

In this embodiment, first, liquid nitrogen is added to the raw material to be crushed, which is added into the feed hopper 100, through the liquid nitrogen delivery channel 420, the raw material is subjected to low-temperature embrittlement in advance, so that the raw material can be crushed and ground after entering the crushing cabin 200, then the raw material subjected to low-temperature embrittlement enters the crushing cabin 200, meanwhile, the liquid nitrogen enters the crushing cabin 200, the interior of the crushing cabin 200 is continuously cooled, the heat generated by the crushing cabin 200, the plastic being crushed and the crushed plastic is cooled by the low temperature of the liquid nitrogen, the molecular structure of the plastic is not damaged, the plastic agglomeration phenomenon is not generated, the waste of the raw material and the weakening of the cutting force of the crushing rollers 220 caused by the adhesion of the plastic to the crushing rollers 220 in the crushing process are avoided, and in order to enable the crushing cabin 200 to be cooled by the liquid nitrogen, a special airflow channel is arranged in the crushing cabin 200, so that the.

The pulverizing roller 220 includes a plurality of equally spaced hinge shafts 221, in this embodiment, three hinge shafts 221 are used, tooth claw blades for cutting pulverized plastic are axially extended and distributed on the hinge shafts 221, and the tooth claw blades on adjacent hinge shafts 221 cut plastic when the hinge shafts 221 rotate.

The feeding mode of liquid nitrogen and plastics adopts the venturi effect in this embodiment, and feeder hopper 100 and liquid nitrogen transfer passage 420 all are the venturi structure promptly, make the feeding more smooth, promote the mixture between liquid nitrogen and the plastic materials more even.

In this embodiment, three twisting shafts 221 form a three-axis claw-shaped crushing roller, the twisting motor 210 is driven, the crushing roller 220 on the rotating disc 230 is driven simultaneously, the three-axis claw-shaped crushing roller is adopted to crush plastic more thoroughly, the crushed plastic particles are finer, and the size of the particles is more uniform. The pulverizing roller 220 in this embodiment can control the particle diameter of the plastic particles to be 0.5 μm to 1 μm.

The discharging mechanism 300 comprises a cyclone separator 310 for gas-solid separation and an air conveying pipeline 320 for communicating the cyclone separator 310 with the crushing cabin 200, wherein an end of the air conveying pipeline 320 is communicated with the bottom of the crushing cabin 200, another end of the air conveying pipeline is communicated with a feeding hole of the cyclone separator 310, the feeding hole 312 of the cyclone separator 310 is positioned in an upper cavity of the cyclone separator 310 and is positioned on the side surface of the cyclone separator 310, the air conveying pipeline 320 is obliquely and upwards arranged towards the feeding hole of the cyclone separator 310, an induced draft fan 400 is arranged between the air conveying pipeline 320 and the bottom of the crushing cabin 200, crushed plastics are sucked into the air conveying pipeline 320 through the induced draft fan 400 and enter the cyclone separator 310 through the air conveying pipeline 320, and the induced draft fan 400 simultaneously conveys the crushed particles and nitrogen with heat into the cyclone separator 310.

The top of the feeding port 312 of the cyclone 310 is an exhaust hole 311, the bottom of the cyclone 310 is provided with a discharge port 313 for finished plastic particles, the cavity at the lower part of the feeding port 312 of the cyclone 310 is a cone with a downward reduced radial distance, after nitrogen and crushed particles enter the cyclone 310 from the side, the nitrogen changes from linear motion to circular motion, most of the rotating airflow spirally flows downwards along the wall from the cone, the crushed particles are thrown to the wall under the action of centrifugal force, the particles contact with the wall, so that inertia is lost, and momentum of downward axial velocity near the wall falls to the discharge port 313 along the wall and is discharged. The airflow rotating and descending continuously flows into the central part of the cyclone separator in the descending process to form centripetal radial airflow, and the airflow forms upward rotating internal rotational flow and is finally discharged through the exhaust holes.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, the present invention can be modified or improved without departing from the principle of the present invention, and these modifications are all considered to be within the protection scope of the present invention.

Claims

The plastic pulverizing device comprises a feed hopper, a pulverizing cabin and a discharging mechanism which are sequentially communicated, and is characterized by further comprising a liquid nitrogen cooling mechanism, wherein the liquid nitrogen cooling mechanism comprises a liquid nitrogen tank and a liquid nitrogen conveying channel, the end of the liquid nitrogen conveying channel is connected with the liquid nitrogen tank, the end of the liquid nitrogen conveying channel is communicated with the feed hopper, the pulverizing cabin comprises a twisting motor and a rotating disc connected with an output shaft of the twisting motor, pulverizing rollers are distributed on the circumference of the rotating disc at equal intervals, and a flow channel for gas to be discharged is arranged in the pulverizing cabin.
2. The plastic crushing device as claimed in claim 1, wherein the crushing roller includes a plurality of equally spaced hinge shafts, each of the hinge shafts is provided with teeth claw blades extending axially for cutting the crushed plastic, and the teeth claw blades on adjacent hinge shafts cut the plastic when the hinge shafts are rotated.
3. The type plastic crushing device as claimed in claim 1, wherein the feeding hopper and the liquid nitrogen delivering channel are each of a venturi structure.
4. The plastic crushing device as claimed in claim 1, wherein the discharging mechanism comprises a cyclone separator for gas-solid separation and a wind pipe connecting the cyclone separator and the crushing chamber, the end of the wind pipe is connected with the bottom of the crushing chamber, the end of the wind pipe is connected with the inlet of the cyclone separator, the inlet of the cyclone separator is located in the upper cavity of the cyclone separator and on the side of the cyclone separator, and the wind pipe is inclined upwards towards the inlet of the cyclone separator.
5. The pure plastic crushing device as claimed in claim 4, wherein the top of the inlet of the cyclone is provided with an exhaust hole, the bottom of the cyclone is provided with a discharge hole for finished plastic particles, and the cavity at the lower part of the inlet of the cyclone is in the shape of a cone with a downward decreasing radial distance.
6. The plastic crushing device of claim 4, wherein an induced draft fan is arranged between the air supply pipeline and the bottom of the crushing cabin, crushed plastic is sucked into the air supply pipeline through the induced draft fan, and enters the cyclone separator through the air supply pipeline.