CN111940455A - A kind of waste plastic film pyrolysis equipment - Google Patents

Abstract

The invention discloses a waste plastic film material pyrolysis equipment, which comprises a feeding hopper, a feeding cylinder, a cover and an extrusion screw. A connecting hopper is arranged below the feeding hopper, and the feeding hopper and the feeding material are connected through the connecting hopper. The casing is wrapped around the outside of the feeding cylinder in the shape of a cavity, and several groups of magnetic conductivity coils are wound on the outer wall of the feeding barrel. A magnetocaloric reaction is generated inside the feeding cylinder to complete the rapid heating of the material. The beneficial effects of the invention are as follows: the device increases the feeding amount of the film material through the change of the spacing and diameter of the screw helical belt, and prevents the material from splashing while feeding the material at a high speed; through the electromagnetic heating effect, the electromagnetic heating method is used to increase the thermal efficiency. , Through the magnetic coils of different turns, different plastic processing processes can be carried out in a single feeding tube according to the temperature change, so that the materials can be pyrolyzed and decomposed quickly, and the production output can be increased while saving energy.

Description

A kind of waste plastic film pyrolysis equipment

technical field

The invention relates to a pyrolysis equipment for waste plastic film material, which belongs to the technical field of environmental protection equipment.

Background technique

With the continuous development of society and economy, various plastic products are increasingly widely used in various fields such as industry, agriculture, national defense, medical and health, and people's daily life. However, a large amount of waste plastics is also produced, causing serious pollution to the environment. Therefore, how to deal with and use waste plastics has become a problem that people are very concerned about. Among the methods for dealing with waste plastics, there is a combustion method with the main purpose of obtaining heat energy, and the plastic is pulverized into thin films for thermal cracking. The treatment process of this method is very simple, but it releases particles and other harmful substances floating in the air and causes secondary pollution to the environment. Using chemical degradation method to convert waste plastic film into chemicals and oil recycling is an effective way to turn waste into treasure.

Catalytic cracking of waste plastics requires approved equipment. Most of the existing pyrolysis equipment for waste plastic film materials are large cracking tanks. The materials are decomposed by external heating, which has low heating efficiency and high heat loss. From the perspective of energy waste, secondly, the existing waste plastic film material pyrolysis equipment needs to smash the material before filling the material. The cloth is full of plastic debris, which affects the working environment and brings some potential threats to the operation of the machine.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide pyrolysis equipment for waste plastic film material in order to solve the above problems.

The present invention achieves the above object through the following technical solutions. A waste plastic film material pyrolysis device includes a longitudinally arranged feeding hopper, a transversely arranged feeding cylinder, a casing and an extrusion screw installed in the feeding cylinder, It is characterized in that: a connecting hopper is arranged below the feeding hopper, and the feeding hopper and the feeding cylinder are connected through the connecting hopper, and the cover is wrapped in a frame shape outside the feeding cylinder, and the casing is fixedly installed on the outside of the feeding cylinder. On the support base as a plane support, several groups of magnetic coils are wound on the outer wall of the feeding cylinder, and the extruding screw is driven to rotate by a frequency-modulating motor to carry out material transportation, and the magnetic heat is generated inside the feeding cylinder after the magnetic conductive coil is connected to alternating current. , complete the rapid heating of the material.

As a technical optimization scheme of the present invention, a frequency modulation motor is arranged on one side of the connecting bucket, and one end of the extrusion screw extends into the connecting bucket and is connected with the transmission structure of the frequency modulation motor.

As a technical optimization scheme of the present invention, the inner diameter of the feeding hopper is gradually reduced from top to small, and a longitudinal feeder is arranged inside the feeding hopper. The longitudinal feeder is a screw structure, and the outer diameter of the screw is the same as The inner diameter of the bottom opening of the feeding hopper is matched, and the screw structure is used for stable feeding, and the continuously decreasing feeding port is fitted with the screw structure, so that the material will not bounce and block during the feeding process.

As a technical optimization scheme of the present invention, the inner diameter of the connecting hopper toward the feeding cylinder gradually decreases, and the helical spacing and diameter of the extrusion screw change with the inner diameter of the connecting hopper and always match the inner diameter of the connecting hopper. The inner diameter, through the cooperation of the extrusion screw and the connecting bucket, enables the device to use the thicker end of the connecting bucket to feed a large amount of material, while ensuring that the particles will not fly out due to the wind force caused by the rotation of the screw during the feeding process.

As a technical optimization scheme of the present invention, the casing is a composite plate body with a detachable structure, and each plate body of the casing is provided with movable fasteners to facilitate the installation and removal of the casing.

As a technical optimization scheme of the present invention, the frequency modulation motor is provided with a transmission shaft matched with the extrusion screw, and the power of the frequency modulation motor is transmitted through the shaft rod of the transmission axial extrusion screw.

As a technical optimization scheme of the present invention, a magnetic resistance plate is arranged inside the casing, and the magnetic resistance plate is the center along the transportation mode of the extrusion screw, and the number of turns of the magnetic coils on the left and right sides of the magnetic resistance plate different.

As a technical optimization scheme of the present invention, the number of windings of the magnetic permeability coil near the connecting bucket is N (N is a non-zero integer), and the number of windings of the magnetic permeability coil on the other side of the magnetic resistance plate is 2-4N The heating process in the feeding cylinder is carried out in stages through the magnetic coils of different turns to increase the cracking efficiency.

As a technical optimization scheme of the present invention, the top of the feeding cylinder and the casing shell are provided with a number of air outlet holes, a spray tower connector is arranged outside the casing, and the spray tower connector protrudes several There are two exhaust pipes, and the exhaust pipes are connected with the feeding cylinder and the connector of the spray tower through the air outlet.

As a technical optimization scheme of the present invention, the air outlet on the feeding cylinder is provided with a filter screen to prevent the material from entering the exhaust pipe through the air outlet and causing blockage.

The beneficial effects of the invention are as follows: the device increases the feeding amount of the film material through the change of the spacing and diameter of the screw helical belt, and prevents the material from splashing while feeding the material at a high speed; through the electromagnetic heating effect, the electromagnetic heating method is used to increase the thermal efficiency. , and reduce the thermal energy loss, through the magnetic conductivity coils of different turns, different plastic processing processes can be carried out in a single feeding tube according to the temperature change, so that the materials can be rapidly pyrolyzed and decomposed, which not only increases the production output but also saves energy in production, thereby further Increase productivity.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Figure 2 is a schematic diagram of the internal structure of the housing of the present invention;

Figure 3 is a schematic diagram of the internal structure of the feeding barrel of the present invention;

FIG. 4 is a schematic diagram of the installation of the magnetic resistance plate of the present invention.

In the figure: 1. Feeding hopper; 2. Connecting hopper; 3. Feeding cylinder; 4. Cover; 5. Support seat; 6. Frequency modulation motor; 7. Sprinkler tower connector; 8. Magnetic coil; 9. , extrusion screw; 10, magnetic resistance plate; 301, discharge pipe; 401, air outlet; 701, exhaust pipe.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1

Please refer to Figures 1-4, a waste plastic film pyrolysis equipment, including a longitudinally arranged feeding hopper 1, a transversely arranged feeding barrel 3, a cover 4 and a squeezer installed in the feeding barrel 3 Screw 9, a connecting hopper 2 is arranged below the feeding hopper 1, and the feeding hopper 1 and the feeding cylinder 3 are connected through the connecting hopper 2. The casing 4 is wrapped around the outside of the feeding cylinder 3 in the shape of a cavity, and the casing 4 is fixedly installed On the support base 5 as a plane support, several groups of magnetic coils 8 are wound on the outer wall of the feeding cylinder 3, a frequency modulation motor 6 is arranged on one side of the connecting bucket 2, and one end of the extrusion screw 9 extends into the connecting bucket 2, and is connected with the connecting bucket 2. The transmission structure of the frequency modulation motor 6 is connected, and the extruding screw 9 is driven to rotate by the frequency modulation motor 6 to carry out material conveying, and after the alternating current is passed through the magnetic coil 8, a magnetothermal reaction is generated inside the feeding cylinder 3, and the rapid heating and cracking of the material is completed. ; The inner diameter of the feeding hopper 1 gradually decreases from the top to the small, and a longitudinal feeder is arranged inside the feeding hopper 1. The longitudinal feeder is a screw structure, and the outer diameter of the screw matches the inner diameter of the bottom opening of the feeding hopper 1. ; The inner diameter of the connecting hopper 2 gradually decreases towards the feeding barrel 3, and the outer diameter of the extrusion screw 9 always matches the inner diameter of the feeding hopper 1 until it matches the inner diameter of the feeding barrel 3; The cover 4 is a detachable structure The plate bodies are assembled, and each plate body of the casing 4 is provided with movable fasteners; the frequency modulation motor 6 is provided with a transmission shaft 601 that cooperates with the extrusion screw 9, and transmits the power of the frequency modulation motor 6 to the extrusion screw 9 through the transmission shaft 601 ; The interior of the housing 4 is provided with a magnetic resistance plate 10, and the magnetic resistance plate 10 is centered along the transportation mode of the extrusion screw 9, and the magnetic coils on the left and right sides of the magnetic resistance plate 10 have different numbers of 8 turns; The number of windings of the coil 8 near the connecting bucket 2 is N (N is a non-zero integer), and the number of windings of the magnetic conductive coil 8 on the other side of the magnetic resistance plate 10 is 2-4N. 4. A number of air outlet holes 401 are arranged on the casing, and a spray tower connector 7 is provided outside the casing 4. A number of exhaust pipes 701 extend from the spray tower connector 7, and the exhaust pipes 701 pass through the air outlet holes. 401 communicates with the feeding cylinder 3 and the spray tower connector 7; the air outlet 401 on the feeding cylinder 3 is provided with a filter screen.

When the present invention is in use, firstly, supply power to the device through an external power supply, control the operation of the device through an external controller, conduct preheating by feeding the magnetic coil 8 with 220V alternating current, fill the device with materials through the feeding hopper 1, and pass the longitudinal The feeder introduces the material into the connecting hopper 2, the extrusion screw 9 rotates, sends the material into the feeding barrel 3, and continues the feeding process (feeding rate ≥ 15kg/min), when the material enters the feeding barrel 3, the magnetic wire The magnetic field generated by the ring 8 has wrapped the metal feeding cylinder 3 for a long time. Through the principle of metal cutting magnetic induction line (similar to the electromagnetic heating ring), an induced eddy current is generated on the surface of the feeding cylinder 3, and the eddy current makes the The carriers move randomly at high speed, and the collision and friction of the carriers generate heat energy, so that the heating can be efficiently and rapidly. Different decomposition processes are completed in the feeding cylinder 3 to increase the cracking efficiency of the raw materials. During the working process, a large amount of waste gas will be generated, which contains harmful substances such as chlorine gas, which cannot be directly discharged. The gas in the barrel 3 is drawn out, and the water vapor and waste gas generated therein enter the spray cleaning tower through the spray tower connector 7 for gas purification, and reach the emission standard. a processing procedure.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

1. The utility model provides a waste plastic film material pyrolysis equipment, includes feeder hopper (1) of vertical setting, conveying cylinder (3), housing (4) and install extrusion screw (9) in conveying cylinder (3), its characterized in that of horizontal setting: feeder hopper (1) below is provided with connecting hopper (2) to through connecting hopper (2) intercommunication feeder hopper (1) and conveying cylinder (3), encloser (4) are package frame form parcel and are in conveying cylinder (3) outside, encloser (4) fixed mounting has a plurality of groups of magnetic conductance coil (8) on supporting seat (5) as the plane support on conveying cylinder (3) outer wall, drives extrusion screw rod (9) through frequency modulation motor (6) and rotates, carries out the material and carries, and leads to behind the alternating current through magnetic conductance coil (8) and make conveying cylinder (3) inside production magnetism hot, accomplishes the rapid heating to the material.

2. The pyrolysis equipment of waste plastic film materials according to claim 1, characterized in that: and a frequency modulation motor (6) is arranged on one side of the connecting hopper (2), and one end of the extrusion screw (9) extends into the connecting hopper (2) and is connected with a transmission structure of the frequency modulation motor (6).

3. The pyrolysis equipment of waste plastic film materials according to claim 1, characterized in that: feeder hopper (1) internal diameter size from the top down to little reduces gradually, and feeder hopper (1) inside is provided with vertical feeder, and vertical feeder is the screw rod structure, and the external diameter of screw rod and feeder hopper (1) bottom open-ended internal diameter match.

4. The apparatus for pyrolyzing waste plastic film material according to claim 3, wherein: the internal diameter of connecting hopper (2) towards conveying cylinder (3) direction reduces gradually, just the ribbon interval and the diameter of extrusion screw (9) change and cooperate the internal diameter of connecting hopper (2) all the time along with connecting hopper (2) internal diameter size, until with the internal diameter of conveying cylinder (3) matches.

5. The pyrolysis equipment of waste plastic film materials according to claim 1, characterized in that: the housing (4) is a combined plate body with a detachable structure, and each plate body of the housing (4) is provided with a movable fastener.

6. The pyrolysis equipment of waste plastic film materials according to claim 1, characterized in that: the frequency modulation motor (6) is provided with a transmission shaft (601) matched with the extrusion screw (9), and the power of the frequency modulation motor (6) is transmitted to the shaft rod of the extrusion screw (9) through the transmission shaft (601).

7. The pyrolysis equipment of waste plastic film materials according to claim 1, characterized in that: the magnetic resistance plate (10) is arranged in the housing (4), the magnetic resistance plate (10) is used as the center along the transportation mode of the extrusion screw (9), and the magnetic conduction coils (8) on the left side and the right side of the magnetic resistance plate (10) are different in number of turns.

8. The apparatus for pyrolyzing waste plastic film material according to claim 7, wherein: the number of windings of the magnetic conduction coil (8) close to the connecting hopper (2) is N circles (N is a non-zero integer), and the number of windings of the magnetic conduction coil (8) on the other side of the magnetic resistance plate (10) is 2-4N circles.

9. The pyrolysis equipment of waste plastic film materials according to claim 1, characterized in that: the top of the material conveying cylinder (3) and the shell of the housing (4) are provided with a plurality of air outlet holes (401) at matching positions, the outside of the housing (4) is provided with a spray tower connector (7), a plurality of exhaust pipes (701) are extended out of the spray tower connector (7), the exhaust pipes (701) are communicated with the material conveying cylinder (3) and the spray tower connector (7) through the air outlet holes (401), the bottom of the tail end of the material conveying cylinder (3) is further provided with a material discharging pipe (301), and the material discharging pipe (301) extends out of the housing (4).

10. The apparatus for pyrolyzing waste plastic film material according to claim 9, wherein: and a filter screen is arranged in the air outlet (401) on the material conveying cylinder (3).

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