JP2013132586A - Cleaning apparatus for synthetic resin-made film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning apparatus for a synthetic resin-made film that has superior cleaning efficiency since the cleaning apparatus securely removes even foreign matter such as mud, manure, and agricultural chemicals strongly sticking on the synthetic resin-made film while automatically cleaning it while taking into consideration a difference in specific gravity depending upon kinds of the synthetic resin-made films, and can clean the synthetic resin-made films differing in specific gravity together.SOLUTION: A cleaning tank 2 which is in a long and substantially-semicylindrical shape and provided with a film discharge part on a tip side is provided with a drain gutter outside corresponding to a drain part formed on a lower side. The cleaning tank 2 has a rotary shaft 6 installed along a length direction and driven by a driving source. The rotary shaft 6 has a plurality of cleaning blades 7 radially projecting apart from one another along an axis so as to clean a synthetic resin-made film by: raking up the synthetic resin-made film for rotation; and putting the synthetic resin-made film in and out of cleaning water in the cleaning tank 2. A film discharge blade 8 is projected radially on the tip side of the rotary shaft 6. The cleaning blades 7 each have a tip side formed into a raking-up part 7C bent in a substantially chevron shape in a rotating direction.

Description

In the present invention, for example, when used for a greenhouse, the agricultural synthetic resin film contaminated with soil, mud, fertilizer, agricultural chemicals, etc. (hereinafter referred to as foreign matter) can be washed and reused. The present invention relates to a synthetic resin film cleaning apparatus for cleaning a synthetic resin film to which foreign matter adheres in civil engineering work.

  Synthetic resin films such as vinyl chloride used for greenhouses, seedling enclosures, and other types of farming work are buried by embedment in the bottom of the skirt, mud splashing by watering or raining, and deposition by spreading fertilizers and pesticides. In the past, it has been disposed of because it is contaminated. However, in recent years, cleaning and reuse have been carried out in order to prevent environmental pollution, reuse resources, and reduce costs. In order to reuse the synthetic resin film, it is necessary to clean and remove the adhered foreign matter. As a means for this purpose, a screw conveyor is placed in the water tank, and the contaminated item to be washed is washed. 2. Description of the Related Art There is known a film cleaning apparatus configured to be immersed and cleaned while rotating a screw conveyor.

  There is also known a cleaning drum type film cleaning apparatus in which a stirring portion formed by projecting a plurality of stirring rods radially on a rotating shaft is provided in a cleaning drum. Further, there has been proposed a cleaning apparatus for agricultural vinyl film waste having a cylindrical drum shape having an impeller rotating inside, a shower device for sprinkling on the upper surface, and a drain outlet on the lower portion (Patent Literature). 1).

Utility Model Registration No. 3145603

  The above-described film cleaning apparatus is a method of cleaning the object to be cleaned by rubbing the object to be cleaned while feeding the object to be cleaned by rotating the screw. However, the object to be washed is sent as it is wrapped around the screw, and the screw is only partially rubbed during this time, so the fixed foreign matter cannot be reliably washed, and the gap between the screw and the washing tank There is a drawback that the machine stops due to the object being washed.

  In addition, the cleaning drum type film cleaning device has the disadvantage that when the cleaning drum is placed vertically, the object to be cleaned such as a synthetic resin film having a high specific gravity sinks to the bottom of the cleaning tank, so that the cleaning drum cannot be cleaned evenly. Then, since it is difficult to automatically feed the objects to be washed, batch processing must be performed and the washing efficiency is poor. Furthermore, the rotor blade is stuck because the objects to be washed cannot be rubbed due to the round bar. There is a drawback that foreign matter cannot be removed reliably.

Further, the technique of Patent Document 1 is a method of removing foreign matter adhering to the surface of the film by performing shower-like watering from the upper part, but since the foreign matter is firmly attached to the film, it is rubbed. Such a method has to be performed, and there is a disadvantage that foreign matters cannot be completely removed by shower-like watering.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and in view of the fact that some synthetic resin films have different specific gravities, mud firmly fixed to the synthetic resin film, We provide a cleaning device for synthetic resin films that is excellent in cleaning efficiency because it automatically removes foreign substances such as fertilizers and agricultural chemicals while automatically washing them, and can also wash synthetic resin films with different specific gravity. The purpose is to do.

The means of the present invention configured to solve the above-described problems is a long and substantially semi-cylindrical shape having an open top, a cleaning tank provided with a film discharge part on the tip side, and a lower side of the cleaning tank The drainage basin provided on the outside of the cleaning tank corresponding to the drainage part formed in the above, a rotating shaft installed along the longitudinal direction of the cleaning tank, driven by a driving source, and axially connected to the rotating shaft A plurality of cleaning blades that are spaced apart and project in the radial direction, and that are swept by rotating the synthetic resin film in the cleaning tank to rotate in and out of the cleaning water, and have a diameter on the tip side of the rotating shaft The cleaning blade is formed of a raked portion whose tip side is bent in a substantially square shape in the rotational direction.

  And the said film discharge part may be comprised from the heavy film discharge part and lightweight film discharge part which were provided along the axial direction.

The cleaning blade may have a rough front surface in the rotational direction.

  The cleaning blade may be formed of a perforated plate.

  Furthermore, the synthetic resin film may be one or both of a lightweight film having a specific gravity of 1 or less and a heavy film having a specific gravity of more than 1.

Since the present invention is configured as described above, the following effects can be obtained.
(1) In a cleaning tank provided with a film discharge part on the front end side, the synthetic resin film is rotated by a cleaning blade with the front end side being a lifting part, and is washed in a large flow of cleaning water, so that it adheres. Foreign matter such as soil, fertilizer and agricultural chemicals can be reliably removed. In addition, since the synthetic resin film to be washed is introduced from the proximal end side of the washing tank and washed, it is automatically discharged from the distal end side, so that the efficiency of the washing operation is excellent.
(2) The cleaning blade only rotates half of the cleaning water during one rotation, and the load due to the resistance of water is halved compared to the blade rotating in water, so the load on the drive source can be reduced.
(3) Since the cleaning blade is rubbed against the synthetic resin film by increasing the coefficient of friction by using the front surface in the rotational direction as a rough surface, it is possible to reliably remove foreign matters that are firmly fixed.
(4) Since the cleaning blade is made of a perforated plate to increase the coefficient of friction, foreign matter adhering to the synthetic resin film is removed during sliding contact, and a large number of hole edges reliably scrape off foreign matter. Can be removed. In addition, since the perforated plate has a low resistance to the washing water received during rotation due to the washing water being removed, the load on the drive source can be reduced.
(5) Since the film discharge section is composed of a heavy film discharge section and a lightweight film discharge section provided along the axial direction of the cleaning tank, it can handle cleaning and automatic discharge operations of synthetic resin films having different specific gravities. Can do.
(6) Even if it is a synthetic resin film that has a specific gravity greater than 1 and sinks into the washing tank, such as vinyl chloride, the cleaning blade, which is bent at the tip side and becomes a lifting part, crawls up from the bottom side of the washing tank and rotates. Since it was made to do, the foreign material adhering to the synthetic resin film can be removed reliably.

FIG. 1 is a front view of a synthetic resin film cleaning apparatus according to the present embodiment. It is a rear view of the synthetic resin film washing | cleaning apparatus. It is a top view of the washing | cleaning apparatus of a synthetic resin film. It is a left view of the synthetic resin film cleaning apparatus. It is a perspective view of the washing tank which constitutes the synthetic resin film washing device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a frame constructed by assembling steel materials, and 2 denotes a steel plate washing tank mounted on the frame 1. The washing tank 2 has a substantially concave curved shape in longitudinal section, and has a long drum portion 2A that opens upward, a side plate 2B that closes the longitudinal base end of the drum portion 2A, and the other longitudinal end of the drum portion 2A. A substantially U-shaped other side plate 2C that is closed, and a horizontally long standing upright L-shape from one upper end of the drum portion 2A to the one side plate 2B in order to prevent the washing water from splashing around during washing. The anti-scattering plate 2D, the heavy film discharge portion 2E formed in a cutout shape at the front end side of the other side plate portion 2C, and the semi-cylindrical shape fixed concentrically to the rotating shaft 6 described later on the outside of the other side plate 2C. It is comprised from the lightweight film discharge part 2F. The lower end side of the drum portion 2A is formed in a mesh shape to serve as a drainage portion 2G, and the contaminated water generated by the cleaning is discharged to a drainage basin 3 described later.

Washing water is stored in the washing tank 2 having the above-described configuration to wash the synthetic resin film, but the synthetic resin film to be washed has a weight that sinks into the washing water when the specific gravity exceeds 1. There is a vinyl chloride film (hereinafter referred to as a film), a lightweight polyethylene film having a specific gravity of 1 or less and floating in the washing water.

  Reference numeral 3 denotes a discharge gutter provided on the outer surface of the drum portion 2 </ b> A corresponding to the drainage portion 2 </ b> F of the cleaning tank 2. The discharge basket 3 has a substantially bowl-like shape in vertical section from a bottom plate 3A and side plates 3B, 3B inclined forward and downward from the base end side to the tip end side, and is provided with blocking plates 3C, 3D at the front and rear ends. The drainage pipe 3E having an open / close valve is provided on the tip side of the one side surface 3B so that the contaminated water flowing down from the cleaning tank 2 is discharged to the outside via the drainage part 2F. .

  Reference numerals 4 and 4 denote a pair of supports for supporting a rotating shaft 6 which will be described later. The supports 4 and 4 are positioned outside the one side plate 2B and the other side plate 2C of the cleaning tank 2 and are erected on the gantry 1. A bearing 5 is provided on each support 4. Reference numeral 6 denotes a rotating shaft which is constructed along the longitudinal direction on the upper end side of the drum portion 2A by supporting both ends in the axial direction on the bearings 5 and 5, and 7, 7,. A plurality of cleaning blades spaced axially from the side 6A to the tip side 6B and projecting in the radial direction. Each cleaning blade 7 is fixed to the rotating shaft 6 and each arm portion 7A is fixed to the arm portion 7A. The blade main body 7B made of a stainless steel rectangular perforated plate is provided on the rotary shaft 6 by being displaced by 90 degrees in the circumferential direction. Each cleaning blade 7 is formed as a raised portion 7 </ b> C by bending the distal end side in a substantially square shape and slightly inclining toward the proximal end side.

  Reference numerals 8 and 8 denote two film discharge blades projecting in the radial direction on the distal end side of the rotary shaft 6. Each film discharge blade 8 is made of a mounting plate 8A fixed to the rotating shaft 6, a support plate 8B fixed to the front end side of the mounting arm 8A, and a rubber plate provided so as to protrude from the front end of the support plate 8B. And a sweeping unit 8C. The discharge blade 8 scoops up the film flowing in the cleaning tank 2 from the base end side to the tip end side while being cleaned, and scrapes it out from the heavy film discharge portion 2E.

Reference numeral 9 denotes a drive unit for driving the rotating shaft 6 to rotate the cleaning blade 7 and the film discharge blade 8. The drive unit 9 is disposed near one side of the cleaning tank 2 and serves as a drive source stored in the casing. An electric motor 9A, and a drive pulley 9B fitted to the output shaft of the electric motor 9A. The rotating shaft 6 includes a driven pulley 9C fitted to the proximal end shaft end 6A, and a driving pulley 9B and a transmission belt 9D wound between the driven pulley 9C. Is driven to rotate in the direction indicated by the arrow in FIG.

  The agricultural resin film cleaning apparatus according to the present embodiment has the above-described configuration, and the operation thereof will be described next. Cleaning water is always supplied from a water supply source (not shown) into the cleaning tank 2 and overflows from the lightweight film discharge unit 2F. The film is put into the cleaning tank 2 from above, and the driving unit 9 is driven to rotate the cleaning blade 7 in the direction indicated by the arrow as shown in FIGS. Since each cleaning blade 7 is a raked portion 7C whose front end is bent in the rotational direction, the film settled on the bottom side of the cleaning tank 2 is sequentially scooped up from the bottom side, lifted from the water surface and rotated halfway. Put it back into the wash water.

In this way, the film can remove foreign substances firmly fixed by being struck against the washing water. In addition, a large eddy current is generated in the cleaning tank 2 by the rotation of the cleaning blade 7, so that the film is washed by stagnation, and foreign matters fixed to the film are effectively removed by rubbing the films. Can do.

In addition, since the cleaning blade 7 uses a perforated plate, the front surface in the rotational direction is rough, and the friction coefficient is higher than that of the flat plate. It can be reliably removed by scraping and removing the foreign matter having a large number of hole edges firmly fixed. In addition, since the cleaning blade 7 made of a perforated plate has a low resistance to the cleaning water received during rotation due to the cleaning water coming out from the front side to the rear side, the load applied to the driving source can be reduced.

Of the films washed in this manner, the heavy film is lifted up by the discharge blade 8 and discharged from the heavy film discharge section 2E to the outside of the tank. On the other hand, the lightweight film mixed in the heavy film is allowed to flow out of the tank together with the washing water overflowing from the lightweight film discharge portion 2F.
In the cleaning process described above, the cleaning water is contaminated with foreign matter such as soil and mud, and discharged from the cleaning tank 2 to the drainage channel (not shown) to discharge foreign matter such as soil and mud. To do.

  In this embodiment, the case of cleaning an agricultural synthetic resin film has been described as an example. However, the cleaning apparatus according to the present invention is not limited to the cleaning of a synthetic resin film used in the agricultural field. Any synthetic resin film with foreign matter attached or contaminated in the fishery field, forestry field or the like is included in the object of cleaning. Moreover, the cleaning apparatus according to the present invention can also clean only a lightweight film.

  Further, the cleaning blade is not limited to the perforated plate, and a cleaning blade having a high friction coefficient by roughening the front surface in the rotation direction by, for example, embossing may be used.

2 Washing tank 2E Heavy film discharge part 2F Light film discharge part 3 Drainage basket 6 Rotating shaft 7 Cleaning blade 7C Raising part 8 Film discharge blade

Claims (5)

  A long semi-cylindrical shape with an open top, a cleaning tank provided with a film discharge part on the tip side, and a drainage part formed on the lower side of the cleaning tank, provided outside the cleaning tank. A drainage trough, a rotating shaft that is installed along the longitudinal direction of the cleaning tank and driven by a driving source, and is axially spaced from the rotating shaft and protrudes in the radial direction, and is synthesized in the cleaning tank. The cleaning blade is composed of a plurality of cleaning blades that are swept by rotating and rotating the resin film so as to enter and exit the cleaning water, and a film discharge blade projecting radially on the tip side of the rotating shaft. Is a synthetic resin film cleaning device having a scraped portion with a leading end bent in a substantially square shape in the rotational direction.   2. The synthetic resin film cleaning apparatus according to claim 1, wherein the film discharge section is composed of a heavy film discharge section and a lightweight film discharge section provided along the axial direction.   2. The agricultural synthetic resin film cleaning apparatus according to claim 1, wherein the cleaning blade has a rough front surface in the rotational direction.   2. The synthetic resin film cleaning apparatus according to claim 1, wherein the cleaning blade is formed of a perforated plate.   2. The synthetic resin film cleaning apparatus according to claim 1, wherein the synthetic resin film is one or both of a lightweight film having a specific gravity of 1 or less and a heavy film having a specific gravity exceeding 1.

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