CN105598094A - Water-free cleaning device for waste plastic film - Google Patents

Abstract

The invention discloses a waterless cleaning device for waste plastic film, which comprises a waterless cleaning machine, a gas-solid separation screen, a dust removal system and a conveying system. The vibrator is equipped with evenly distributed centrifugal fan blades at one end of the large diameter, and the abdomen is equipped with screen holes and screw conveyors; the gas-solid separation screen is installed at the outlet of the waterless washing machine, and the outside is equipped with a closed shell, and the inside is equipped with a perforated The screening drum is equipped with a screw conveyor on the abdomen; the shell of the cleaning machine and the gas-solid separation screen is equipped with a dust collection port, which is connected with the spiral dust collector and the bag filter through the dust removal pipe network to form a negative pressure dust removal system; the discharge of the device The parts are respectively equipped with material conveyors. The invention has the advantages of simple structure, strong continuous working ability, no winding, no congestion, saving water resources and human resources.

Description

An anhydrous cleaning device for waste plastic film

technical field

The invention belongs to a device for removing impurities on waste plastic films under anhydrous conditions, and in particular relates to an anhydrous cleaning device for waste plastic films.

Background technique

Due to the development of modern science and technology, plastic film and its various products are widely used in industry, agriculture and people's daily life. Compared with plastic film, hard plastic products are easy to recycle and reuse, and there are many mature recycling products. Utilize technology and equipment. Plastic film is also a resource that can be recycled and regenerated, but waste plastic film, especially waste plastic film and domestic garbage waste plastic film is not only contaminated with a lot of soil, but also contaminated with a lot of impurities such as grass foam and slag. Reuse causes great difficulties, making the cleaning of waste plastic films very complicated and requires a large amount of clean water.

At present, the cleaning process of waste plastic films in China generally adopts hydraulic cleaning technology. Since the surface of waste plastic films, especially garbage plastic films, is covered with impurities such as fine sand, soil, and liquid, it not only causes severe water consumption during the cleaning process. Pollution and great waste cannot be thoroughly cleaned.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and provide a waterless cleaning device for waste plastic films. The present invention has many advantages such as simple structure, strong continuous working ability, no winding, no congestion, saving water resources and human resources.

Technical scheme of the present invention is realized like this:

An anhydrous cleaning device for waste plastic films, comprising an anhydrous cleaning machine, a gas-solid separation screen, a dust removal system, a feeding conveyor, a discharge conveyor one and a discharge conveyor two, the front of the anhydrous cleaning machine is provided with a feeding The material conveyor, the gas-solid separation screen is set at the discharge port of the waterless cleaning machine, and the discharge conveyor 1 and the discharge conveyor 2 are respectively installed at both ends of the gas-solid separation screen, and the waterless cleaning machine and the gas-solid separation The sieve is connected with the dust removal system through the dust removal pipe and the dust removal pipe.

The waterless cleaning machine is composed of a casing, an inner cylinder, a transmission mechanism and a frame. The left end of the casing is provided with a feed port, the right end is provided with a discharge port, and the abdomen of the casing is provided with a sieve hole and an impurity collection screw. Conveyor, the inner cylinder is conical, the surface of the inner cylinder is provided with conical vibrators arranged in a spiral array, and the end of the large diameter is provided with evenly distributed centrifugal fan blades, which are arranged inside the casing, and the frame and casing The two end faces of the machine are connected, and the transmission mechanism is set on the frame.

The waterless cleaning machine and the gas-solid separation screen are provided with a dust removal port 1 and a dust removal port 2, and the dust removal port is connected to a dust removal system.

The abdomen of the gas-solid separation screen is provided with a screw conveyor, the discharge port of the screw conveyor is provided with discharge conveyor two, and the discharge port of the gas-solid separation screen is provided with discharge conveyor one.

In the present invention, the anhydrous cleaning machine is provided with a conical inner cylinder to avoid the congestion of plastics in the dry cleaning machine; the surface of the conical inner cylinder is provided with a conical rapper, and when the film plastic is hit, the particles adhering to the surface of the plastic film are Impurities are separated by beating, and at the same time, because the rapper is conical, the plastic will not be scraped on the rapper, which solves the problem of plastic winding in the washing machine; the large diameter end of the cone-shaped inner cylinder is equipped with evenly distributed centrifugal wind When the centrifugal blade rotates at high speed, a negative pressure is formed inside the anhydrous washer, and the plastic is moved from the small diameter end to the large diameter end of the anhydrous washer, accelerating the discharge, forming a strong airflow inside the gas-solid separation screen, and The plastic film is blown up to enhance the screening effect; there is a dust collection port above the waterless cleaning machine and the gas-solid separation screen, and the dust collection port is connected to the dust removal pipe network to collect the dust of the entire device uniformly to achieve environmental protection.

Description of drawings

Fig. 1 is a process diagram of an anhydrous cleaning device for waste plastic films of the present invention;

Fig. 2 (a) is the front view of waterless cleaning machine of the present invention;

Fig. 2(b) is a side view of the waterless washing machine of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a kind of waste plastic film anhydrous cleaning device is composed of anhydrous cleaning machine 5, gas-solid separation screen 7, dust removal system, feeding conveyor 2, discharge conveyor one 16 and discharge conveyor two 18 .

The waterless cleaning machine 5 is made up of a casing 24 , a tapered inner cylinder 21 , a frame 28 , a transmission mechanism 26 and an impurity collection screw conveyor 4 . The two ends of the casing 24 are connected to the frame 28, the cylindrical surface of the left end shell is provided with a feed port 20, the cylindrical surface of the right end shell is provided with a discharge port 27, and the abdominal shell is provided with a sieve hole and an impurity collection screw conveyor 4 ; The surface of the conical inner cylinder 21 is provided with a spirally arranged conical rapper 22 , one end of the large diameter is provided with a centrifugal fan 25 , and the transmission mechanism 26 is provided on the frame 28 .

Gas-solid separation screen 7, dust removal system, feed conveyor 2, discharge conveyor one 16, and discharge conveyor two 18 are all common devices, and will not be described here.

The waste plastic film raw material is sent from the feed hopper 1 through the feed conveyor 2 to the feed port 20 of the waterless cleaning machine 5, and is continuously fed by the conical vibrator 22 spirally arranged on the surface of the conical inner cylinder 21 rotating at high speed. rapping, and at the same time, under the action of the centrifugal airflow generated by the centrifugal fan 25 provided at the large diameter end of the conical inner cylinder 21, the adhered impurities on the surface of the waste plastic film fall off and separate, and the impurities pass through the casing 24 of the waterless cleaning machine 5 The set sieves are sieved out, fall into the impurity collection screw conveyor 4 in the belly of the anhydrous cleaning machine 5, collect and discharge, and collect into the discharge conveyor 18 through the chute 3, and transport to the impurity storage site; plastic film and untreated impurities A small amount of separated impurities and vibrated dust are gradually moved from the feed port 20 of the anhydrous washer to the discharge port 27 of the anhydrous washer under the negative pressure of the centrifugal airflow, and are drawn by the large-diameter end of the conical inner cylinder 21 The centrifugal airflow generated by the high-speed rotation of the centrifugal blades 25 blows out and enters the gas-solid separation screen 7.

The material blown into the gas-solid separation sieve 7 is a mixture of film plastics, residual impurities and oscillating dust. Due to the different specific gravity, it will fall on different positions of the gas-solid separation sieve 7 according to different falling points under the action of the centrifugal airflow; The large mixture is further screened and separated by the gas-solid separation screen 7, and the impurities under the screen fall into the impurity collection screw conveyor 17 in the abdomen of the separation screen, collect and discharge, collect in the discharge conveyor 18 and transport it to the waste storage site. The thin film plastic with light specific gravity floats to the other end of the sieve body under the buoyancy of the airflow, and is discharged from the discharge port 8 to the discharge conveyor 16, and sent to the storage field or the next processing procedure. The system collects and completes the gas-solid separation and sieve classification process.

The dust removal system consists of an anhydrous cleaning machine dust removal pipeline 6, a gas-solid separation screen pipeline 9, a dust removal connection pipeline 11, an exhaust pipeline 14, a cyclone dust collector 10, a bag filter 12 and an induced draft fan 13. After the induced draft fan 13 starts, the dust removal pipes 6 and 9 of the dust removal system are connected with the dust collection port 23 of the waterless cleaning machine 5 and the dust collection port 19 of the gas-solid separation screen 7 to generate a negative pressure airflow, and the waterless cleaning machine 5 and the gas-solid The dust-laden air in the separation screen 7 is sucked into the dust removal pipes 6 and 9 respectively, and introduced into the cyclone dust collector 10. In the cyclone dust collector, the air flow forms a funnel state, and the large specific gravity and coarse particle dust in the air flow are settled down, and the dust is removed by the cyclone The dust discharge valve 15 set under the filter 10 collects and discharges; the light and small dust particles enter the bag filter through the dust removal connecting pipe 11, and the clean air passes through the induced draft fan 13 and the exhaust pipe 14 under the filter bag of the bag filter It is discharged into the atmosphere to achieve the effect of environmental protection and dust removal.

Claims (4)

1. a waterless cleaning device for waste plastic films, characterized in that: comprise anhydrous cleaning machine (5), gas-solid separation screen (7), dust removal system, feed conveyor (2), discharge conveyor one ( 16) and discharge conveyor two (18), the front of the anhydrous cleaning machine (5) is provided with a feeding conveyor (2), and the gas-solid separation screen (7) is arranged on the discharge of the anhydrous cleaning machine (5) Port (27) position, discharge conveyor one (16) and discharge conveyor two (18), anhydrous cleaning machine (5) and gas-solid separation sieve ( 7) Connect with the dust removal system through the dust removal pipe (6) and the dust removal pipe (9). 2. A kind of waste plastic film anhydrous cleaning device according to claim 1, is characterized in that: described anhydrous cleaning machine (5) is made up of casing (24), inner cylindrical body (21), transmission mechanism ( 26) Composed of a frame (28), the left end of the casing (24) is provided with a feed port (20), the right end is provided with a discharge port (27), and the abdomen of the casing (24) is provided with a sieve hole and an impurity collection screw Conveyor (4), the inner cylinder (21) is conical, the surface of the inner cylinder (21) is provided with conical vibrators (22) arranged in a spiral array, and the end of the large diameter is provided with evenly distributed centrifugal fan blades (25), is arranged on casing (24) inside, and frame (28) is connected with two end faces of casing (24), and transmission mechanism (27) is arranged on the frame. 3. A kind of waste plastic film anhydrous cleaning device according to claim 1, is characterized in that: described anhydrous cleaning machine (5) and gas-solid separation screen (7) are provided with dedusting port one (23), have Dust removal port two (19), the dust removal port is connected to the dust removal system. 4. A kind of waste plastic film anhydrous cleaning device according to claim 1, is characterized in that: the abdomen of described gas-solid separation screen (7) is provided with screw conveyor (17), and screw conveyor (17) Discharge conveyor two (18) is arranged at the discharge port position, and discharge conveyor one (16) is arranged at the discharge outlet (8) position of the gas-solid separation sieve (7).