JP5100452B2 - Waste resin pellet manufacturing equipment - Google Patents

Description

  The present invention relates to a waste resin pellet manufacturing apparatus, and more particularly to a waste resin pellet manufacturing apparatus that can efficiently clean and subdivide resin waste when recycling resin waste.

Energy conservation policies are being actively promoted to reduce carbon dioxide emissions into the atmosphere, which is a cause of global warming. Among these energy conservation policies, saving oil resources is strongly desired.
However, petroleum-derived synthetic resin products are supplied in large quantities in daily life, and most of them are discarded after use. It can be said that the recycling of synthetic resin products after use has finally become established in recent years. Nonetheless, these highly recyclable synthetic resin products can be easily cleaned at home even if they are new and incompatible with new products or even if they are dirty. Most are.

On the other hand, the recycling rate is still low for synthetic resin products whose appearance and dirt are significantly inferior compared to the new state due to the fact that it is difficult for users to wash them. It is in. Synthetic resin products with such a low recycling rate are mostly disposed of in the same manner as in the past, or used as industrial heat sources.
Synthetic resin products with a low recycling rate have recently begun to be reused as recycled materials. Specifically, there is a form in which a so-called recycled material pellet is manufactured by melting and then granulating a synthetic resin product and used as a part of the raw material of the synthetic resin product. As a synthetic resin product used for manufacture of such a recycled material pellet, the synthetic resin sheet used for agriculture is mentioned, for example.

Agricultural synthetic resin sheets are not only in the state that organic waste such as soil and sand, vegetable scraps, etc. remain attached when they are discharged as waste, but also the long body is rolled. In most cases, it is discharged to a waste disposal contractor in a folded state or in a folded state. When recycling such a synthetic resin product, in addition to washing to remove the earth and sand and organic waste adhering to the surface first, it is essential to subdivide to obtain an appropriate length.
For example, Patent Documents 1 and 2 disclose processing apparatuses and synthetic resin processing methods for producing recycled material pellets as well as performing such cleaning and fragmentation.

JP 2003-165115 A JP 2006-037084 A

However, the plastic film waste material processing apparatus disclosed in Patent Document 1 is a process for removing soil adhering to the film waste material by crushing the plastic film waste material (hereinafter simply referred to as film waste material). However, when trying to crush long film scraps in a crusher using a rotary blade, film crushing blades get caught in the crushing blade, and the crushing blade has low crushing efficiency. In many cases, the crushing blade is damaged by the wound film waste material or the adhered material to the film waste material, and crushing the film waste material is extremely difficult.
In addition, when the soil adhering to the film waste material is dry, the film adhering material and the soil adhering to the film waste material may not actually be separated even if centrifugal separation is performed. . As described above, the cleaning / cutting process of the waste film material at present is performed at a very low efficiency, which is not profitable and causes the recycling process to be avoided.

  In addition, the resin regeneration method disclosed in Patent Document 2 separates the resin part from the attached substance by dissolving the synthetic resin film to be recycled, which has impurities attached thereto, in a solvent. A method for recycling the solvent is disclosed. As a result, the resin film to be recycled can be cleaned and subdivided (melted) at the same time. However, since the solvent is used, the problem that the procurement cost of the solvent increases and the handling of the solvent is complicated. In addition, there is a problem that the load on the environment is large, such as having an adverse effect on drainage.

  Accordingly, the present invention aims to provide a waste resin pellet manufacturing apparatus that can be continuously operated at low cost while suppressing the effect on the surrounding environment when manufacturing pellets using resin waste as a raw material. Yes.

The present invention relates to a pretreatment device for washing and subdividing resin waste, a dehydration device for dewatering the washed resin waste, a melting device for melting the dehydrated resin waste, and solidifying the molten resin. A water treatment device that purifies at least the precipitate-containing discharged water among a pelletizer to be granulated, a precipitate-containing discharged water discharged from the bottom of the pretreatment device, and a dehydrated water discharged from the dehydrating device. A waste resin pellet manufacturing apparatus comprising: a water tank; a resin waste supply means for supplying resin waste into the water tank; and a water supply means for supplying water to the water tank. When the disposed in the water tank, a stirrer for stirring the water tank to the resin waste to flow in a predetermined direction together with the water in the water tank, Oite vertically movably disposed in said water tank, said Resin waste in the water tank While cutting into the grinder pump for pumping is arranged to be vertically movable in said water tank, a high-pressure water injection system for injecting high-pressure water to the water inlet of the grinder pump, is disposed on the inner wall surface of the water tub, the A water depth detection sensor for detecting a water depth in the water tank, and a water inlet of the grinder pump and a height position of the high pressure water injection device in the water tank based on the water depth information in the water tank detected by the water depth detection sensor A position control device that adjusts the water, and after washing and cutting the resin waste, it is pumped to the dehydrator together with water, and dehydrated water discharged from the dehydrator, and purified by the water treatment device. In the waste resin pellet manufacturing apparatus, at least one of the water is reused in the water tank.

Further, the grinder pump, by periodic or arbitrary timing, characterized that you reverse rotation rotation of the motor. Thereby, the engagement state in the water inlet of a grinder pump can be cancelled | released.

  The resin waste is a long sheet body. When recycling long resin sheet bodies such as agricultural resin sheets, it is possible to perform important cleaning and fragmentation at a low cost, so it is possible to promote recycling of agricultural resin sheets that have been avoided in the past. it can.

  According to the waste resin pellet manufacturing apparatus according to the present invention, the resin waste is washed with water to remove the deposits on the resin waste, and the washed resin waste has an appropriate length. After being cut into pieces (subdivided), it can be transported to a dehydrating apparatus, so that it is possible to provide a waste resin pellet manufacturing apparatus that enables efficient recycling of resin waste. Moreover, since the water used in the apparatus is circulated after being processed by the water purifier, the waste resin pellet manufacturing apparatus can be operated without giving a load to the surrounding environment.

(First embodiment)
Hereinafter, embodiments of a waste resin pellet manufacturing apparatus according to the present invention will be described with reference to the drawings. In this embodiment, as an example of resin waste, a synthetic resin sheet called a so-called agricultural mulch is illustrated, but the resin waste to be treated of the present invention is limited to agricultural mulch. Of course, it is not a thing.

FIG. 1 is a schematic configuration diagram of a waste resin pellet manufacturing apparatus according to the first embodiment.
As shown in FIG. 1, the waste resin pellet manufacturing apparatus 100 according to the present embodiment cleans resin waste with water in the pre-treatment device 110 and subdivides it, then transports it to the dehydrator 120 and performs dehydration treatment. It is an apparatus for producing resin pellets from resin waste by being granulated by a pelletizer 140 after being melted by a melting apparatus 130, and at least recovering water discharged from the pretreatment apparatus 110 and the dehydrating apparatus 120 and purifying the water. A water treatment device 150 is also provided.

FIG. 2 is a plan view showing the configuration of the pretreatment device. 3 is a cross-sectional view taken along line AA in FIG. The waste resin pellet manufacturing apparatus 100 according to the present invention is characterized by the structure of the pretreatment apparatus 110.
As shown in FIG. 2, the pretreatment device 110 in this embodiment inputs water and agricultural mulch 22 that is resin waste into the aquarium 10, and water and agricultural mulch 22 in the aquarium 10. After flowing and stirring, the grinder pump 50 sucks up the water and the agricultural mulch 22, cuts the agricultural mulch 22, and then pumps it together with the water in the water tank 10 to the dehydrator 120.

  The water tank 10 of the pretreatment device 110 in the present embodiment is formed in a rectangular shape as shown in FIGS. 2 and 3, and the inside is divided into two by a partition plate 12. The first space 14 divided by the partition plate 12 is supplied with water by the water supply means 30 and flows into the second space 16 where the resin waste is thrown over the partition plate 12. Supply. Since the deposit of the resin waste settles at the bottom of the second space 16, it is preferable to provide a discharge port 18. The precipitate-containing water discharged from the discharge port 18 is sent to the water treatment device 150.

  In the present embodiment, a hydraulic excavator 20 is used as waste resin supply means for supplying the agricultural mulch 22 to the water tank 10. Agricultural mulch 22 transported from the discharge site is grabbed by hydraulic excavator 20 equipped with an attachment such as a grapple or a hydraulic cutter, and supplied to second space 16. Since the agricultural mulch 22 conveyed from the discharge site varies in length, when the agricultural mulch 22 is supplied to the second space 16, if primary cutting is simultaneously performed by the attachment of the hydraulic excavator 20, This is preferable because a series of processes in the waste resin pellet manufacturing apparatus 100 according to the present invention can be performed smoothly.

  Water is supplied to the water tank 10 by the water supply means 30. Water or ground water can be used as the water source. A water depth detection sensor (not shown) is disposed on the inner wall surface of the water tank 10 (preferably, the inner wall surface on the second space 16 side), and the water supply means 30 uses the water depth information detected by the water depth detection sensor. A water supply control device (not shown) for controlling the water supply amount may be provided.

  The agricultural mulch 22 and the water supplied to the water tank 10 are flowed and stirred by the stirring pump 40 disposed at the bottom of the second space 16 to wash the soil and the like adhering to the agricultural mulch 22. The output of the agitation pump 40 is inverter-controlled by a control device (not shown), and the water and the agricultural mulch 22 are caused to flow and agitate in the second space 16 by a spiral flow in the arrow direction shown in FIG. By generating a swirl flow in the second space 16 in this manner, the cleaning effect of the agricultural mulch 22 can be improved, and the water supplied in the second space 16 and the agricultural mulch 22 can be improved. And the agricultural mulch 22 can be easily sucked into the water inlet 54 of the grinder pump 50.

  A grinder pump 50 is disposed in the second space 16. As shown in FIG. 3, the grinder pump 50 is attached to a support column 52 erected in the water depth direction in the second space 16 so as to be movable up and down. The support columns 52 are arranged in an arrangement that does not hinder the swirling flow of the water and the agricultural mulch 22 in the second space 16. The grinder pump 50 automatically adjusts the height of the grinder pump 50 with respect to the water level in the second space 16 by a position control device that adjusts the height position in the second space 16 based on the water depth information detected by the water depth detection sensor. The water absorption position (the height position of the water absorption port 54) can be adjusted. Such a position control device is preferably a control device that also operates as the water absorption control device described above.

  The grinder pump 50 in this embodiment is set so that the opening surface of the water inlet 54 is in a state orthogonal to the water surface in the second space 16 (that is, the water inlet 54 faces the horizontal direction). . As shown in FIG. 3, in this embodiment, the grinder pump 50 is set so that the water inlet 54 is completely underwater and is at an intermediate height position of the second space 16. It is of course possible to set the grinder pump 50 so that the portion is exposed from the water surface, or to set the grinder pump 50 near the bottom of the second space 16.

The water in the second space 16 and the agricultural mulch 22 are taken into the grinder pump 50 from the water inlet 54, and are finely cut at the grinder portion inside and then pumped together with the water to the dehydrator 120. The agricultural mulch 22 washed in the second space 16 can be subdivided from the primary cut length (preferably about 1 m) to about 3 to 10 cm. If the grinder pump 50 performs processing to reverse the rotation of the motor periodically or at an arbitrary timing, the grinder pump 50 instantaneously feeds the agricultural mulch 22 that is caught in the front and rear (inside and outside) portions of the water inlet 54. Can be released (released).
The water sucked into the grinder pump 50 and the agricultural mulch 22 are supplied to a separating device such as a mesh container. As a result, the agricultural mulch 22 that has been subdivided by the grinder pump 50 and pumped together with water and water can be roughly separated.

At the bottom of the second space 16, earth and sand removed from the agricultural mulch 22 due to the cleaning of the agricultural mulch 22, vegetable waste, and the like are deposited. Although water is always supplied to the aquarium 10 (first space 14), in order to prevent the cleaning effect in the second space 16 from being diminished by the precipitate, an outlet for discharging the precipitate. 18 is arranged. The discharge port 18 is opened periodically or at an arbitrary timing, and the earth and sand and vegetable waste settled in the second space 16 are discharged to the water treatment device 150, so that the cleaning effect in the second space 16 is always predetermined. Can be maintained at a level. It is convenient if the water treated in the water treatment device 150 is circulated to the water tank 10 (first space 14).
In addition, when discharging the water containing sediment from the discharge port 18, the agricultural mulch 22 is provided in the water tank 10 (second space 16) in order to prevent the agricultural port 22 from being clogged in the discharge port 18. It is preferable to carry out in the absence.

Each apparatus structure after the next process of the pre-processing apparatus 110 in the waste resin pellet manufacturing apparatus 100 will be described.
In the present embodiment, the dewatering device 120 includes a mesh basket 122 for separating the water pumped from the grinder pump 50 of the pretreatment apparatus 110 and the subdivided agricultural mulch 22, and agriculture separated by the mesh basket 122. The screw conveyor 124 for centrifuging the moisture in the mulch 22 for squeezing and the press 126 for further squeezing the moisture in the mulch 22 for agriculture from which the moisture has been removed by centrifugation are configured. Water (dehydrated water) discharged from each of the mesh trough 122, the screw conveyor 124, and the pressing machine 126 is sent to the water treatment device 150 shown in FIG. 1 and subjected to a predetermined water purification treatment, and then the water tank 10 (first Space 14).

  A known water treatment device can be adopted as the water treatment device 150. In the present embodiment, the treatment method is not particularly limited as long as the sediment and water are separated from the sediment-containing water and the dissolved water can be removed. If the treated water treated by the water treatment device 150 is returned to the water tank 10 (first space 14) and used, the washing water can be saved. Sediment and vegetable waste separated from water can be used as horticultural soil by fermenting vegetable waste in the soil. In addition, it is conceivable that the earth and sand and vegetable waste separated from the precipitate-containing water may be individually treated after being dried and separated by centrifugation or the like.

  The agricultural mulch 22 dehydrated by the dehydrating device 120 is conveyed to the melting device 130. The agricultural mulch 22 adjusted to a predetermined moisture content is once charged into a fixed amount feeder 132 at a charging port of the melting device 130 and is supplied from the fixed amount feeder 132 to the melting unit 134 by a predetermined capacity. The melting part 134 is provided so that the melting temperature can be adjusted according to the resin waste to be treated. The adjustment of the melting temperature can be performed by a control unit of the melting apparatus 130 (not shown). It is convenient if the temperature of the melting part 134 corresponding to each raw material of the resin waste is stored in the control part in advance. The temperature of the melting part 134 at the time of processing the agricultural mulch 22 as in the present embodiment may be set to about 200 ° C.

  In the melting part 134, the screw conveyor 136 is accommodated in a state where the rotation axis coincides with the central axis in the molten resin traveling direction in the melting space. In this embodiment, since the screw of the screw conveyor 136 is slid on the inner wall surface of the melting part 134, the agricultural multi 22 is connected to the heat source of the melting part 134, the screw conveyor 136, and the inner wall surface of the melting part 134. It is melted using both heats of frictional heat.

The agricultural mulch 22 melted by the melting device 130 is pushed out from an extrusion die attached to the terminal portion of the melting part 134 and discharged in the form of a rod-shaped resin BJ. The rod-shaped resin BJ discharged from the melting device 130 is sent to the pelletizer 140. The rod-shaped resin BJ is cured by being cooled by cooling water in the cooling unit 142 of the pelletizer 140 and then cut by the cutting unit 144 of the pelletizer 140 to be formed into granular pellets P. The pellet P obtained in this way is passed through the vibrating screen 160, and after passing through the fine particle portion BR, only the pellet P having a predetermined size or more is stored in the pellet storage unit 170.
Since the cooling water used for cooling the rod-shaped resin discharged from the extrusion mold is merely used for cooling the molten resin, there is no need to treat it with the water treatment device 150. It can be used as cooling water for the cooling unit 142.

  According to this embodiment, since soil adheres and the agricultural mulch 22 which is a long body is recycled as a pellet material, the cleaning process and the cutting process can be performed at the same time, which is advantageous. In particular, the agricultural mulch 22 can be cleaned and subdivided very efficiently, which has been a problem in the production of pellets from a long sheet body such as the agricultural mulch 22. The production cost of the recycled material pellets using the waste resin such as the multi 22 can be significantly reduced.

(Second Embodiment)
FIG. 4 is a cross-sectional view corresponding to FIG. 3 of the first embodiment in the second embodiment. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
The present embodiment is characterized in that the shape of the water tank 10 is formed in a bottomed mortar shape having an inverted trapezoidal shape as shown in FIG. By adopting such a water tank 10, it is possible to reduce the output of the agitation pump 40 that is necessary when generating a vortex in the water tank 10. Compared to the first embodiment, the method can be performed and the precipitate is easily collected at the bottom. The partition plate 12 is not provided in the water tank 10 in this embodiment, and is formed in a single tank structure.

Moreover, in this embodiment, the high pressure water injection apparatus 60 which injects high pressure water with respect to the water inlet 54 of the grinder pump 50 is arrange | positioned. When the water inlet 54 of the grinder pump 50 is blocked by the agricultural mulch 22 (refers to a state in which the agricultural mulch 22 is not sucked and only water is sucked), the high-pressure water injection device 60 is forced to Since the agricultural mulch 22 can be pushed into the water suction port 54 or removed from the water suction port 54, the efficiency of the cutting process of the agricultural mulch 22 by the glider pump 50 can be improved. This is advantageous because the pretreatment device 110 can be automatically operated.
In the case of adopting such a configuration, the height position of the water inlet 54 is the same as the water surface position of the water tank 10 and the upper end height position of the water inlet 54 or a part of the water inlet 54 is exposed from the water surface. It is preferable that the arrangement is. Moreover, it is preferable that the high-pressure water injection device 60 is also arranged so as to be able to move up and down according to the water depth of the water tank 10, similarly to the grinder pump 50.

In this embodiment, since the capacity of the water tank 10 of the pretreatment device 110 is smaller than the capacity of the water tank 10 in the first embodiment, the pollution degree of the washing water tends to be high, so that the primary cleaning is sufficiently performed. There is also a risk that it cannot be done. Therefore, in the present embodiment, a secondary cleaning device (not shown) is disposed between the pretreatment device 110 and the dehydrating device 120, and after being cleaned by the secondary cleaning device, transported to the dehydrating device 120. Is adopted. By adopting such a configuration, the degree of cleaning of the agricultural mulch 22 is increased. Therefore, the water treatment device 150 includes the pretreatment device 110 and at least the secondary washing device side of the dehydration device 120 and the secondary washing device. As long as it is connected to. The water treatment method after washing separated from the secondary washing apparatus can adopt a known water treatment method as in the previous embodiment.
Since the steps after the secondary cleaning by the secondary cleaning apparatus are the same as those in the previous embodiment, detailed description thereof is omitted here.

(Third embodiment)
FIG. 5 is a cross-sectional view corresponding to FIG. 3 of the first embodiment in the third embodiment. Also in the present embodiment, the same components as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.
In the present embodiment, a passage pump 70 is disposed in the second space 16 of the two-tank water tank 10 similar to the first embodiment, and the water supply destination of the passage pump 70 and the water inlet 54 of the grinder pump 50 are provided. The point which connects is characteristic.

  By adopting a configuration in which the passage pump 70 and the glider pump 50 are continuously arranged in the water tank 10 as in the present embodiment, the water in the water tank 10 (second space 16) and the long length are arranged. Since the agricultural mulch 22 of the body can be forcibly fed to the water inlet 54 of the grinder pump 50, the water inlet 54 of the grinder pump 50 is blocked by the agricultural mulch 22 in the second space 16. The motor of the grinder pump 50 is reversely rotated periodically or at an arbitrary timing as in the first embodiment, or the high pressure water injection device 60 is disposed as in the second embodiment. Without injecting high-pressure water into the water inlet 54, the grinder pump 50 can continuously feed the agricultural mulch 22 while cutting it, and the pretreatment device 110 can be continuously fed. It is possible to dynamic operation.

  Although the present invention has been described in detail based on the embodiments, the present invention is not limited to the embodiments described above. For example, in the above embodiment, when supplying water to the aquarium 10, a mode in which the water supplied to the first space 14 is supplied to the second space 16 by overflowing from the partition plate 12 will be described. However, the upper end edge of the partition plate 12 is formed in a saw-blade concavo-convex shape, enabling water to flow between the first space 14 and the second space 16 from the concave portion of the saw blade. It is also possible to eliminate the water level difference between the first space 16 and the second space 16. By adopting this form, the supernatant portion of the wash water produced by washing the agricultural mulch 22 in the second space 16 is caused to flow into the first space 14 and the discharge port disposed in the first space 14. Alternatively, the water in the first space 14 can be supplied to the water treatment device 150 and the treated water treated by the water treatment device 150 can be supplied to the first space 14 again. In this case, if the water supply means 30 is disposed at the bottom of the first space 14 and the drain outlet is disposed at the top, the dilution of dirty water flowing from the second space 16 can be minimized. It can be discharged to the water treatment device 150. By doing in this way, it can be set as the state where the agricultural multi 22 was always thrown in in the 2nd space 16. FIG.

  Moreover, although the agricultural multi 22 which is a long sheet | seat body is illustrated as a resin waste in the above embodiment, the resin waste (for example, a food packaging resin film etc.) by which washing | cleaning and subdivision are requested | required are illustrated. ) Can be suitably processed in the present invention. Of course, the form of the resin waste is not limited to a long sheet like the agricultural mulch 22.

Moreover, in 1st Embodiment and 2nd Embodiment, although the water inlet 54 of the grinder pump 50 is demonstrated in the state installed in the state orthogonal to the water surface, the water inlet 54 can be adjusted to arbitrary directions. Thus, it is more convenient if the water inlet 54 and the main body of the grinder pump 50 are formed in a rotatable connecting portion.
Furthermore, in the above embodiment, the grinder pump 50 is disposed in the water tank 10 (second space 16) so as to be movable up and down while being attached to the support column 52. The grinder pump 50 can be arranged so as to be lifted and lowered from the upper side of the water tank 10 (second space 16). By adopting such an arrangement of the grinder pump 50, the entanglement of the agricultural mulch 22 with the support pillar 52 can be further reduced in the water tank 10 (second space 16).

Moreover, in the above embodiment, although the form where the stirring pump 40, the grinder pump 50, and the passage pump 70 are each arrange | positioned in the water tank 10 is demonstrated, the magnitude | size of the water tank 10 and a waste resin pellet are demonstrated. A configuration may be adopted in which a plurality of each or any one of them are arranged according to the processing capability of the manufacturing apparatus 100.
Of the configurations in all the embodiments described above, it is of course possible to adopt another embodiment in which arbitrary configurations in the respective embodiments are appropriately combined.

It is a schematic block diagram of the waste resin pellet manufacturing apparatus concerning 1st Embodiment. It is a top view which shows the structure of a pre-processing apparatus. It is sectional drawing in the AA line in FIG. It is sectional drawing applicable to FIG. 3 of 1st Embodiment in 2nd Embodiment. It is sectional drawing applicable to FIG. 3 of 1st Embodiment in 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Water tank 12 Partition plate 14 1st space 16 2nd space 18 Discharge port 20 Hydraulic excavator 22 Agricultural mulch 30 Water supply means 40 Stirring pump 50 Grinder pump 52 Support pillar 54 Water intake port 60 High pressure water injection apparatus 70 Passing pump 100 Waste resin pellet production apparatus 110 Pretreatment apparatus 120 Dehydration apparatus 122 Mesh trough 124 Screw conveyor 126 Squeezer 130 Melting apparatus 132 Constant supply machine 134 Melting section 136 Screw conveyor
140 Pelletizer 142 Cooling unit 144 Cutting unit 150 Water treatment device 160 Vibrating sieve 170 Pellet container

Claims (3)

A pretreatment device for cleaning and fragmenting resin waste;
A dehydrator for dewatering the washed resin waste,
A melting device for melting dehydrated resin waste,
A pelletizer for solidifying the melted resin;
Disposal provided with a water treatment device that purifies at least the precipitate-containing discharged water out of the precipitate-containing discharged water discharged from the bottom of the pretreatment device and the dehydrated water discharged from the dehydration device. A resin pellet manufacturing apparatus,
The pretreatment device includes:
A tank,
Resin waste supply means for supplying resin waste into the water tank;
Water supply means for supplying water to the aquarium;
An agitator that is disposed in the water tank and causes the resin waste to flow in a predetermined direction together with the water in the water tank to stir the water tank;
Oite is vertically movably disposed in the water tank, a grinder pump for pumping while the resin waste in said water tank was cut with water,
A high-pressure water injection device that is disposed so as to be movable up and down in the water tank, and injects high-pressure water into a water inlet of the grinder pump;
A water depth detection sensor disposed on the inner wall surface of the water tank to detect the water depth in the water tank;
Based on the water depth information in the water tank detected by the water depth detection sensor, a position control device that adjusts the water inlet of the grinder pump and the height position of the high-pressure water injection device in the water tank;
After washing and cutting the resin waste, it is pumped to the dehydrator together with water,
At least one of the dehydrated water discharged from the dewatering device and the water purified by the water treatment device is reused in the water tank. The grinder pump, by periodic or arbitrary timing, waste resin pellets manufacturing apparatus according to claim 1, wherein that you reverse rotation rotation of the motor. The waste resin pellet manufacturing apparatus according to claim 1 or 2 , wherein the resin waste is a long sheet body.