JP2006289814A - Dry cleaning system of resin film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dry cleaning system capable of removing mud or the like sticking to a used resin film without using wash water. <P>SOLUTION: A dry cleaning system for cleaning an agricultural polyethylene film comprises a high speed rotary cleaning machine 1 causing a large number of rotary projections 7 provided on a high speed rotating drum 3 to collide with the agricultural polyethylene film, and an air purging cleaning machine 11 for intermittently blowing air from nozzles 15 against the agricultural polyethylene film carried on and transferred by a mesh conveyor 21. Dirt on the agricultural polyethylene film is peeled by the high speed rotary cleaning machine 1, and then separated by the air purging cleaning machine 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement of a dry cleaning system for reusing a resin film.

  When recycling used agricultural polyethylene films and vinyl films used in fields, etc., it was necessary to clean dirt such as mud on the film.

  Patent Document 1 discloses a water washing machine that separates and removes foreign matters such as sludge from crushed film waste. As shown in FIG. 7, the water washing machine 101 includes a cylindrical washing tank 102, a rotor 103 that swirls cleaning liquid and film waste contained in the washing tank 102, and washed film waste from the outside. And an on-off valve 105 mounted in the extraction pipe 104. When the rotor 103 rotates, the loaded film piece swirls together with the cleaning liquid in the water tank 102 to remove the dirt attached to the film waste.

Patent Document 2 proposes a dry cleaning machine for cleaning a resin film. This dry cleaning machine is equipped with a high-speed rotary cleaning machine that causes a large number of rotating projections protruding from a drum that rotates at high speed to collide with the resin film. The dirt on the surface is peeled off and collected.
JP 2001-170937 A Japanese Patent Application No. 2003-314202

  However, since the water-washing type washing machine 101 disclosed in Patent Document 1 uses a large amount of washing water to wash the film waste, the equipment for purifying the washing water and the film waste after washing are dried. There is a problem that equipment is required and equipment costs and running costs are high.

  The dry cleaning machine proposed in Patent Document 2 has a problem that it is difficult to sufficiently separate the dust composed of dirt peeled from the resin film.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a dry cleaning system capable of sufficiently cleaning mud and the like attached to a used resin film without using cleaning water.

  The present invention relates to a dry cleaning system for cleaning a resin film, a high-speed rotating cleaning machine that causes a large number of rotating protrusions protruding from a drum that rotates at high speed to collide with the resin film, and a nozzle on a resin film that is carried on a net conveyor And an air purge cleaning machine that blows air ejected from the apparatus, and the resin film is separated by a high-speed rotary cleaning machine and then separated by an air purge cleaning machine.

  According to the present invention, the resin film repeatedly collides with the rotating protrusions in the high-speed rotary washing machine, and the dirt on the surface of the crushed pieces is peeled off by the impact frictional force generated at the time of the collision.

  The resin film washed by the high-speed rotary washing machine is blown with air in the process of being carried on the net conveyor by the air purge washing machine, and the dust consisting of the dirt separated from the resin film is separated from the resin film by this air. To do.

  In this way, the resin film dirt is separated by the impact frictional force with the high-speed rotary washing machine, and then separated by the air blown by the air purge washing machine, thereby sufficiently enhancing the cleaning effect of the resin film.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows a dry cleaning system of the present invention for cleaning an agricultural polyethylene sheet (hereinafter referred to as agricultural poly) used as a resin film.

  In this dry cleaning system, air is intermittently connected to the high-speed rotary cleaning machine 1 that collides a large number of rotating projections 7 protruding from the drum 3 that rotates at high speed with the agricultural poly and the agricultural poly carried on the net conveyor 21. An air purge washing machine 11 for spraying is used, and the soil of agricultural poly is peeled off by the high-speed rotary washing machine 1 and then separated by the air purge washing machine 11.

  Agricultural poly crushed to a size of about several tens to hundreds of millimeters by a crusher (not shown) is pumped to the inlet 2 of the high-speed rotary washing machine 1 by a quantitative charging machine (not shown). The agricultural poly put into the high-speed rotary washing machine 1 collides with a large number of rotating projections 7 provided on the drum 3 that rotates at high speed in the high-speed rotary washing machine 1, and the dirt attached to the agricultural poly by this impact frictional force. Is peeled off.

  The dust consisting of the separated dirt is sucked through the filter 5, sent to the dust collector 82 through the blower 81, and collected through this dust collector 82.

  In addition, about the above-mentioned high-speed rotary washing machine 1, it has already applied for Japanese Patent Application No. 2003-314202 (patent document 2).

  Agricultural poly from which dirt has been peeled off by the high-speed rotary washing machine 1 is sucked from the outlet 4 to the cyclone 80 through the blower 83, and the dirt is separated by centrifugal force in the cyclone 80 and then to the air purge washing machine 11. It is thrown.

  Agricultural poly put into the air purge washing machine 11 is blown by air intermittently in the process of being carried on the net conveyor 21 by the air purge washing machine 11, and dust consisting of dirt peeled off from agricultural poly by this air. Is separated from agricultural poly.

  Agricultural poly from which dirt has been separated by the air purge washing machine 11 is sent out as a washing product, and the washing operation is completed.

  The separated matter consisting of dirt dust separated from agricultural poly by the high-speed rotary washer 1 and the air purge washer 11 is sent to the dust collector 82 via the blower 81 and is collected via this dust collector 82.

  The washed product is solidified into a polyethylene block by a melting machine, for example, and shipped as a recycled material.

  2 to 5 show a specific structure of the air purge cleaner 11. The air purge washing machine 11 includes a net conveyor 21 in which a net-like wire belt 22 circulates and transports agricultural poly, a net-like wire casing 19 that defines an air purge space 18 on the net conveyor 21, and the air purge space 18. The hopper 12 that opens before this and introduces agricultural poly, the discharge portion 14 that discharges agricultural poly located at the folded end of the wire belt 22, and the agricultural poly conveyed on the wire belt 22 The nozzle 15 which sprays air intermittently and the collection | recovery mechanism (not shown) which collects the isolate | separated material isolate | separated from agricultural poly in the air purge space 18 and sends to the blower 81 are provided.

  As shown in FIGS. 2 and 3, the net conveyor 21 includes a ladder-shaped main frame 27 and front and rear rollers 23 and 24 that are rotatably supported at both ends of the main frame 27. A belt 22 is stretched over the front and rear rollers 23 and 24. The front and rear rollers 23 and 24 are supported so as to be rotatable about parallel horizontal axes, and the upper surface of the wire belt 22 facing the air purge space 18 extends substantially horizontally. The upper circulating portion of the wire belt 22 is guided by a plurality of beams 29. The lower circulating portion of the wire belt 22 is guided by a plurality of rollers 30.

  The rear roller 24 is rotationally driven by a motor 25. As the rear roller 24 rotates, the wire belt 22 circulates.

  The front roller 23 moves back and forth in the circulation direction of the wire belt 22 via the tensioner 26 and adjusts the tension of the wire belt 22.

  As shown in FIG. 4, three portal frames 28 are erected on the main frame 27, and a net-like wire casing 19 is stretched over these portal frames 28. A substantially rectangular air purge space 18 is defined between the wire casing 19 and the wire belt 22.

  On the main frame 27, a charging area 17 is provided in front of the air purge space 18 where the outlet of the hopper 12 faces. The charging area 17 is surrounded by a wire casing 16 erected on the main frame 27.

  The air purge cleaner 11 includes a chamber 33 in which air pressurized by a compressor (not shown) is accumulated, and valves 35 and 37 that intermittently communicate the chamber 33 with the nozzles 15. Air is intermittently discharged from the air.

  In the present embodiment, the air purge washing machine 11 includes four nozzles 15 that discharge air, and each nozzle 15 is directed toward the agricultural poly conveyed on the wire belt 22 from below the wire belt 22. As shown by the arrow in FIG. Each nozzle 15 extends in a substantially vertical direction and opens toward the lower circulation portion of the wire belt 22.

  Each nozzle 15 includes a pair of rear nozzles 15 disposed toward the rear portion of the air purge space 18 and a pair of front nozzles 15 disposed toward the front portion of the air purge space 18.

  Pressurized air is supplied from the chamber 33 to the rear nozzle 15 via a pipe 34, a valve 35, and a pipe 36.

  Pressurized air is supplied from the chamber 33 to the front nozzle 15 via a pipe 34, a valve 37, and a pipe 38.

  Each valve 35 is controlled to open alternately by a controller (not shown).

  Next, the operation and effect will be described.

  In the process in which the agricultural poly moves from the inlet 2 to the outlet 4 through the cleaning space 8 in the high-speed rotary washing machine 1, the crushed pieces repeatedly collide with the rotating protrusion 7 and the fixed protrusion 8, and the impact frictional force generated at the time of this collision As a result, the dirt on the surface of the agricultural poly is peeled off.

  A part of the dust composed of the separated dirt is sucked through the filter 5, sent to the dust collector 82 through the blower 81, and collected through this dust collector 82.

  The agricultural poly washed by the high-speed rotary washing machine 1 is subsequently thrown into the air purge washing machine 11, and air is intermittently blown in the process of being carried on the net conveyor 21 by the air purge washing machine 11. The dust consisting of dirt peeled off from the agricultural poly by the air is separated from the agricultural poly and collected through the net conveyor 21 or the casing 19.

  Thus, after the agricultural poly stains are peeled off by the impact frictional force in the high-speed rotary washing machine 1, the dirt is separated by the air blown by the air purge washing machine 11, thereby enhancing the agricultural poly washing effect.

  The air purge washing machine 11 includes a net conveyor 21 in which a net-like wire belt 22 circulates and carries agricultural poly, a net-like wire casing 19 that defines an air purge space 18 on the net conveyor 21, and a wire belt 22. Since the nozzle 15 for intermittently blowing air toward the agricultural poly to be carried and transported is provided, the agricultural poly is sufficiently stirred in the air purge space 18 by the blown air, and dust is separated from the agricultural poly by the air Is promoted, and the cleaning effect of agricultural poly is enhanced.

  In the present embodiment, since each nozzle 15 jets air toward the agricultural poly transported on the wire belt 22 from the lower side of the wire belt 22, the agricultural poly is moved into the air purge space 18 by the intermittently blown air. It is urged to be stirred in, and the cleaning effect of agricultural poly is enhanced.

  Next, another embodiment shown in FIGS. 6A, 6B, and 6C will be described. In addition, the same code | symbol is attached | subjected to the same structure part as the said embodiment.

  The air purge washing machine 11 includes eight nozzles 15a to 15h, and each nozzle 15a to 15h ejects air from the obliquely upper side of the net conveyor 21 toward the agricultural poly conveyed on the net conveyor 21.

  Each of the nozzles 15 a to 15 h is inclined downward with respect to the horizontal line, and ejects air toward the net conveyor 21.

  Each nozzle 15a-15h is arrange | positioned so that it may orthogonally cross with respect to the conveyance direction of the net conveyor 21. FIG. The outlets of the nozzles 15 a to 15 h have a flat cross-sectional shape in the vertical direction, and the air jetted from the nozzles 15 a to 15 h spreads in the transport direction of the net conveyor 21.

  Four nozzles 15 a to 15 d are arranged on the right side of the net conveyor 21, and four nozzles 15 e to 15 h are arranged on the left side of the net conveyor 21.

  The nozzles 15a to 15d arranged on the right side and the four nozzles 15e to 15h arranged on the left side are arranged offset with respect to the transport direction of the net conveyor 21 so as not to face each other.

  Air is intermittently supplied to the nozzles 15a to 15h via four valves (not shown). The nozzle 15a and the nozzle 15e, the nozzle 15b and the nozzle 15f, the nozzle 15c and the nozzle 15g, and the nozzle 15d and the nozzle 15h communicate with the chamber through a common valve, respectively, and simultaneously eject air.

  Each of the nozzles 15 a to 15 h is provided through a net-like wire casing 19 that defines an air purge space 18.

  Next, the operation and effect will be described.

  In the present embodiment, the air purge washer 11 sprays air intermittently because each nozzle 15a to 15h blows air toward the agricultural poly conveyed on the net conveyor 21 from obliquely above the net conveyor 21. Passes through the net conveyor 21 and moves downward, the dust separated from the agricultural poly by air passes through the net conveyor 21 and is quickly collected, and the separated dust adheres to the agricultural poly on the net conveyor 21 again. This can reduce the cleaning effect of agricultural poly.

  Since the nozzles 15a to 15d and the nozzles 15e to 15h provided on the net conveyor 21 are offset with respect to the transport direction of the net conveyor 21 so as not to face each other, the agricultural poly is agitated in the air purge space 18 by the blown air. This will increase the cleaning effect of agricultural poly.

  The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.

  The resin film washer of the present invention can be applied to a recycling system for other synthetic resin sheets such as vinyl chloride sheets other than agricultural polyethylene sheets used in fields and the like.

The block diagram which shows embodiment of this invention and shows a dry-type cleaning system. The side view of an air purge washing machine. The top view of an air purge washing machine similarly. The front view of an air purge washing machine. Sectional drawing which follows the AA line of FIG. The three-plane figure of the air purge washing machine which shows other embodiment of this invention. Sectional drawing of the washing machine which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 High speed rotary washing machine 7 Rotating protrusion 11 Air purge washing machine 15 Nozzle 21 Net conveyor

Claims (5)

In a dry cleaning system for cleaning resin films,
A high-speed rotary washing machine that collides a number of rotating protrusions protruding from the drum rotating at high speed with the resin film;
An air purge washing machine that blows air ejected from a nozzle onto a resin film carried on a net conveyor,
A resin film dry cleaning system, wherein the dirt of the resin film is peeled off by the high-speed rotary cleaner and then separated by the air purge cleaner.   2. The resin film dry cleaning system according to claim 1, wherein the nozzle intermittently ejects air.   3. The resin film dry cleaning system according to claim 1, wherein the nozzle ejects air from a lower side of the net conveyor toward a resin film transported on the net conveyor. 4.   3. The resin film dry cleaning system according to claim 1, wherein the nozzle blows air toward the resin film conveyed on the net conveyor from an obliquely upper side of the net conveyor. 4.   5. The resin film dry cleaning system according to claim 4, wherein the nozzles provided across the net conveyor are offset with respect to the transport direction of the net conveyor so as not to face each other.

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