JP2004025076A - Separator - Google Patents

Abstract

An object of the present invention is to separate and collect contents from a bag in which powdery contents are stored, such as a disposable body warmer.
A separating device includes a pretreatment device and a main body, and a raw material is introduced into the main body after a cut is made in a packaging material by the pretreatment device. The main body 120 includes a casing 121, a crushing blade 128 attached to a rotating shaft 122 in the casing 121, screens 135 and 136 forming a lower half of the casing 121, and a guide member provided on an inner peripheral surface of the casing 121. 132. The raw material 11 put in the casing 121 is crushed by the crushing blade 128 by rotating the rotating shaft 122. Then, while the wrapping material is moved to the collection port 121B of the casing 121 by the guide member 132, the contents fall through the screens 135 and 136 and are separated.
[Selection] Fig. 2

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a separator, and more particularly, to a separator that separates and recovers contents from a bag containing powdery contents.
[0002]
[Prior art]
A disposable body warmer is a portable body warmer generally used for heating by utilizing the heat accompanying the oxidation reaction of iron.In the inside of a permeable inner bag, mainly iron powder, sodium chloride, moisture, activated carbon, Wood flour, vermiculite, etc. are included. The inner bag filled with these contents is kept sealed in a non-breathable outer bag until use, and when the inner bag is removed from the outer bag during use, iron powder comes into contact with air. Oxidized and maintained at about 40-60 ° due to its exotherm.
[0003]
The production of the disposable body warmer is performed by mixing the contents, filling the inner bag, and packing the inner bag in an outer bag, while taking care not to promote the oxidation reaction of the iron powder. At that time, the iron powder may be oxidized, or a defective product in which the inner bag and the outer bag are unbalanced may be generated. This defective product occurs at a certain rate even if the accuracy of the manufacturing equipment is increased. The generated defective product is discarded without being used, without being shipped. On the other hand, even products that have been shipped as good products whose expiration date has passed are returned and discarded unused. Conventionally, unused products such as defective products and returned products have been entrusted to a contractor and treated as industrial waste.
[0004]
[Problems to be solved by the invention]
However, in view of the increasing disposal costs of industrial waste every year, resource saving and environmental protection, it is desirable to collect and recycle these unused products as useful resources.
[0005]
However, unused items of disposable body warmers have various problems in collecting them as recycled resources. For example, when the contents are taken out by tearing the outer bag or the inner bag, there is a problem that the iron powder of the contents generates heat due to an oxidation reaction. Further, since iron powder is in a state where sodium chloride adheres and is easily oxidized, there is a problem that it is difficult to collect iron powder as a useful recycle resource. In addition, when sodium chloride is contained in the contents, there is a problem that salt damage of soil and river must be considered. Further, while solving these problems requires a large amount of cost, there is also a problem that they must be solved at low cost to recover them as recycled resources.
[0006]
Of these problems, the present invention particularly pays attention to the problem of tearing out the inner bag and taking out the contents. When the inner bag is cleaved, it is desired to take out the contents promptly so that the contents after the cleaving are not oxidized. However, there is a problem that it is difficult to remove the contents from the inner bag in a short time because the contents contain a large amount of water.
[0007]
In addition, since the size of the bag and the amount of the contents are different for each product, there is a problem that it is difficult to efficiently collect the contents in all types of warmers. For example, if the apparatus is configured for a large body warmer, which easily tears the bag, the bag will not be sufficiently cleaved in the case of a small body warmer, and the content recovery rate will decrease. Conversely, if the device is configured so as to be able to surely cleave a small body warmer, the device may become large or a finely chopped bag may be collected together with the contents. As described above, there are various problems in separating the bag from the contents of the body warmer, and in reality, there is no separator suitable for separating the body warmer.
[0008]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a separator suitable for separating and collecting contents from a bag in which contents are stored, such as a disposable body warmer. And
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a separator for separating the contents from a bag containing the contents in the form of granules, the separator being formed in a horizontal cylindrical shape. A bag inlet is provided at one end, a bag recovery port is provided at the other end, a casing provided with a screen at the bottom, and a rotating shaft provided inside the casing. Attached to, and by rotating the rotating shaft, the blade to tear open the bag thrown from the inlet, and a guide means spirally formed along the inner peripheral surface of the casing, By rotating the rotating shaft, the bag inserted from the input port is moved to the recovery port along the guide means while being cut by the blade and collected, and the contents are removed from the bag during the movement. Are separated, It is characterized by being recovered via serial screen.
[0010]
According to the first aspect of the present invention, the bag and the contents are automatically separated and collected simply by rotating the rotating shaft. According to the first aspect of the present invention, the contents are flipped out of the bag while the bags are in various postures due to the impact of the rotating blade, so that the contents hardly remain in the bag, and the contents are highly recovered. Can be recovered at a rate. As described above, according to the separator of the first aspect, the contents stored in the bag can be quickly and reliably separated and collected.
[0011]
According to the second aspect of the present invention, since the blade is detachably attached to the rotating shaft, the blade can be replaced when the blade is worn. In addition, since one blade can be mounted in four ways: the basic posture, the front / back reverse posture, the end reverse posture, and the full reverse posture, the life of one blade is extended.
[0012]
According to the third aspect of the present invention, after the bag is cut by the pre-processing device, the separation process is performed by the separator. When the cut bag is separated as described above, the separation process can always be performed with high separation efficiency regardless of the size and shape of the bag or the type and amount of the contents. According to the third aspect of the present invention, the separation efficiency of the separator is improved, so that the size of the separator can be reduced. Further, according to the third aspect of the present invention, the pretreatment machine is constituted by a pair of rolls rotating in different directions at different rotation speeds. The pretreatment machine having such a configuration can reliably cut a bag regardless of the size of the bag or the amount of contents. In addition, this pretreatment machine has a simple structure, and is small and lightweight.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of a separator according to the present invention will be described with reference to the accompanying drawings.
[0014]
First, the configuration of a general disposable body warmer to which the separator according to the present invention is preferably applied will be described.
[0015]
The disposable body warmer is configured by wrapping contents mainly composed of iron powder in a middle bag, and sealingly packing the middle bag with an outer bag. The composition of the contents varies slightly depending on the manufacturer and the product, but in general, it is mainly composed of iron powder, salts (corresponding to electrolyte), moisture, wood powder, activated carbon (corresponding to oxygen adsorbent), vermiculite. Etc. are mixed. The proportion of each composition is, for example, iron 60% by weight, water 20% by weight, salts 5% by weight, wood flour 5% by weight, activated carbon 5% by weight, and vermiculite 5% by weight. In addition, the composition of the content is not limited to the above-described example. For example, a composition without vermiculite or a composition using a magnesium salt or a calcium salt instead of the salt may be used. Furthermore, the main component of the content need not be iron powder, but may be metal powder that generates heat during oxidation. Note that water is usually contained in wood flour, activated carbon, and vermiculite that serve as a water retention agent.
[0016]
The inner bag that wraps the contents is made of a sheet or the like obtained by laminating a polyethylene resin on a nylon nonwoven fabric, and has appropriate air permeability. The outer bag that wraps the inner bag is made of a composite material such as a polypropylene film and a polyethylene resin, and is coated with vinylidene chloride or the like to prevent air from entering or evaporating moisture. . The inner bag and the outer bag may be made of a material other than those described above, or an adhesive portion may be provided on the inner bag so that it can be attached to clothes or the like.
[0017]
In the disposable body warmer configured as described above, when the inner bag is taken out from the outer bag, the iron powder in the inner bag comes into contact with air to be oxidized and generates heat due to the oxidation reaction. At that time, the activated carbon inhales air to promote contact between the iron powder and oxygen, and water and salts accelerate the oxidation reaction of the iron powder. Thereby, the disposable body warmer is maintained at 40 to 60 ° C. for 10 hours or more.
[0018]
Next, a separation and recovery device employing the separator according to the present invention will be described. The separation and recovery device is a device that separates and recovers iron powder from unused disposable warmers without oxidizing it. The term “unused product” as used herein means, for example, a defective product in which a defective packaging material (improper packaging or printing error), defective content (defective mixing ratio or defective quantity) or the like has expired on a production line. Or unsold returns.
[0019]
FIG. 1 is a diagram showing a processing procedure in the separation and recovery device.
[0020]
The separation and recovery apparatus separates and collects unused items of disposable warmers (hereinafter referred to as “raw materials”) by performing a crushing separation process, a cooling dissolution process, a cyclone separation / washing process, and a light component separation process. The raw material is first crushed by a crushing separation process, and the inner bag and the outer bag (hereinafter collectively referred to as “packaging material”) are cleaved. The ruptured packaging material is collected separately from the contents, and is preferably recycled or discarded as plastic waste after being reduced in volume.
[0021]
On the other hand, the contents separated from the packaging material by the crushing separation processing are sent to the cooling and melting processing. Then, it is immersed in makeup water or recycled water to cool the contents and to dissolve the salts of the contents in the liquid. The slurry of the solution is sent to the cyclone separation / washing process together with the contents. Then, a separation process of separating the iron powder from other contents and a cleaning process of washing the iron powder to remove salts are repeatedly performed. As a result, the iron powder is reduced to the concentration of attached salts corresponding to the recycling purpose and collected, so that it can be used as a useful recycling resource, and can be reused as a material for the contents of a disposable body warmer, for example.
[0022]
Other contents separated from the iron powder (that is, light components such as wood flour, activated carbon, and vermiculite) are sent to a light component separation process after a coagulant is added. In the light fraction separation process, the light fraction is separated and recovered by collecting aggregates. This collected material can be used, for example, in horticulture and the like, and can also be reused as a material for the contents of a disposable body warmer.
[0023]
Since the wastewater from the light separation process contains an electrolyte, if the electrolyte is recovered, it can be reused as a material for the contents of the disposable body warmer.
[0024]
In addition, a part of the liquid separated by the light fraction separation process or the cyclone separation / washing process is returned as recycled water and used in the cooling and dissolving process. As a result, the liquid consumption of the entire apparatus can be reduced.
[0025]
FIG. 2 is a front sectional view showing the configuration of the separator and the dissolving tank according to the present invention, and FIG. 3 is a side view of the separator.
[0026]
The separator includes a pretreatment device 100 and a main body 120. The raw material 11 conveyed by the conveyor 13 of FIG. 1 is first put into the pre-processing machine 100, and a cut is made in the packaging material. Then, it is put into the main body 120 to separate the packaging material and the contents, and the contents are put into the dissolution tank 20.
[0027]
FIG. 4 is a plan view showing the pretreatment device 100, and FIG. 5 is a sectional view taken along line 5-5 in FIG.
[0028]
As shown in FIG. 4, the pretreatment device 100 mainly includes an apparatus main body 101 and a motor 104. As shown in FIG. 6, a hollow portion 101C is formed inside the apparatus main body 101, and an input port 101A and a discharge port 101B are formed so as to communicate with the hollow portion 101C. The charging port 101A is formed wider as it goes upward, and the raw material 11 is charged into the center of the hollow portion 101C. The outlet 101B is connected to the inlet 121A of the main body 120. A charging chute 114 is attached to the charging port 101A. In addition, a communication chute 115 is attached to the discharge port 101B and connected to the main body 120.
[0029]
Two rolls 102 and 103 are horizontally arranged in a hollow portion 101C of the apparatus main body 101. The rolls 102 and 103 are arranged so as to be parallel to each other, and are rotatably supported by the apparatus main body 101. Gears 105 and 106 are attached to the ends of the two rolls 102 and 103, respectively. The gears 105 and 106 are formed in different sizes, and are attached so as to mesh with each other.
[0030]
A pulley 110 is attached to an end of the roll 102, and an endless belt 107 is wound around the pulley 110. The belt 107 is wound around a pulley 111 attached to a rotation shaft of the motor 104. Therefore, when the motor 104 is driven, the rotational driving force of the motor 104 is transmitted to the roll 102 via the belt 107. Accordingly, the roll 102 rotates, and the roll 103 rotates in the opposite direction to the roll 102 in conjunction with the roll 102. At this time, the roll 102 and the roll 103 rotate at different speeds (for example, 1000 rpm and 500 rpm) according to the size of the gears 105 and 106.
[0031]
A plurality of cutting blades 108 are attached to the outer peripheral surface of the roll 102 at a constant pitch in the axial direction of the roll 102. A plurality of cutting blades 109 are attached to the outer peripheral surface of the roll 103 at a constant pitch in the axial direction of the roll 103. The cutting blade 108 and the cutting blade 109 are mounted so as to be alternated. That is, it is attached so that the cutting blade 109 enters between the cutting blades 108 and 108, and the cutting blade 108 enters between the cutting blades 109 and 109.
[0032]
The pitch of the cutting blades 108 is substantially the same as the thickness of the cutting blade 109, and the pitch of the cutting blades 109 is substantially the same as the thickness of the cutting blade 108. Therefore, the side surface of the cutting blade 108 and the side surface of the cutting blade 109 are arranged with almost no gap. Thus, when the bag of the raw material 11 is sandwiched between the side surface of the cutting blade 108 and the side surface of the cutting blade 109, a cut can be made in the bag.
[0033]
As shown in FIG. 5, irregularities are formed on the outer peripheral surface of the cutting blade 108 and the outer peripheral surface of the cutting blade 109, and when the rolls 102 and 103 are rotated, the raw material 11 is moved between the rolls 102 and 103. It can be pushed into.
[0034]
Therefore, in the raw material 11 pressed between the rolls 102 and 103, the packaging material is sandwiched between the side surfaces of the cutting blade 108 and the cutting blade 109, and a cut is formed in the packaging material. The raw material 11 having the cut formed in the packaging material is discharged from the discharge port 101A of the apparatus main body 101.
[0035]
Below the rolls 102 and 103, scrapers 112 and 113 are provided, respectively. The scraper 112 is formed in a comb shape in which irregularities are continuous in the axial direction of the roll 102. Also, each upper end of the scraper 112 enters between the cutting blades 108 and 108 and contacts the roll 102. Therefore, the raw material 11 that has entered between the cutting blades 108 can be scraped off to the outlet 101B by the scraper 112. Similarly, the scraper 113 is formed in a comb shape in which irregularities are continuous in the axial direction of the roll 103. Each upper end of the scraper 113 enters between the cutting blades 109 and 109 and contacts the roll 103. Therefore, the raw material 11 having entered between the cutting blades 109 can be scraped off to the discharge port 101B by the scraper 113. Thereby, the raw material 11 with the cut in the packaging material can be reliably discharged to the discharge port 101B.
[0036]
As described above, according to the pretreatment machine 100, the roll of the raw material 11 can be cut by rotating the rolls 102 and 103. Since the pretreatment device 100 cuts the packaging material while pressing the raw material 11 between the rolls 102 and 103, the packaging material can be reliably cut regardless of the type of the raw material 11. In addition, according to the pretreatment device 100, the raw material 11 with the cut in the packaging material is discharged reliably and quickly, so that unnecessary oxidation reaction of the contents can be prevented. Further, since the pretreatment machine 100 has a simple structure for rotating the pair of rolls 102 and 103, it is small and lightweight.
[0037]
In addition, it is preferable that the pretreatment machine 100 can change various settings depending on the type of the raw material 11. For example, depending on the type of the raw material 11, the rotation speed of the rolls 102 and 103 may be adjusted, or the distance between the rolls 102 and 103 may be adjusted. Further, the pretreatment device 100 itself may be detachably attached to the main body 120, and the pretreatment device 100 may be detached according to the type of the raw material 11.
[0038]
Further, the apparatus main body 101 of the pretreatment machine 100 may be formed in a hollow shape for weight reduction.
[0039]
FIG. 6 is a front sectional view showing the main body 120. FIG. 7 is a sectional view taken along line 7-7 in FIG. 6, and FIG. 8 is a sectional view taken along line 8-8 in FIG.
[0040]
As shown in FIG. 6, the main body 120 includes a cylindrical casing 121 installed horizontally. An inlet 121A is formed at one end of the casing 121 (that is, the right side in FIG. 6), and a recovery port 121B is formed at an opposite end (the left side in FIG. 6). The inlet 121A is formed obliquely upward as shown in FIG. 7, and the pre-processing machine 100 (see FIG. 3) is connected to the inlet 121A. Therefore, the raw material 11 discharged from the pretreatment device 100 is charged into the casing 121 from the charging port 121A. At this time, since the charging port 121A is formed obliquely upward, the raw material 11 is charged in the tangential direction of the casing 121. On the other hand, the collection port 121B is formed downward as shown in FIG. 6, and the collection bag 18 of the packaging material is detachably attached to the collection port 121B.
[0041]
Inside the casing 121, a rotating shaft 122 is provided horizontally at a position of the center line of the casing 121. The rotating shaft 122 is rotatably supported by the casing 121, and a pulley 123 is attached to an end thereof. As shown in FIG. 4, an endless belt 124 is wound around the pulley 123, and the rotational driving force of the motor 125 is transmitted to the rotating shaft 122 via the belt 124.
[0042]
As shown in FIG. 6, a plurality of pedestals 127 and pedestals 129 are attached to the rotating shaft 122. The pedestals 127 are disposed at a constant pitch on the side of the loading port 121A, and the pedestals 129 are disposed on the side of the collection port 121B at a smaller pitch than the pitch of the pedestals 127.
[0043]
As shown in FIG. 7, each pedestal 127 is formed in a rectangular plate shape, and is installed in the radial direction. The pedestals 127 are arranged so that the adjacent pedestals 127 and 127 are orthogonal to each other. To the end of the pedestal 127, a blade 126 (hereinafter referred to as an impact blade) mainly for giving an impact to the raw material 11 is detachably attached by a bolt 130 or the like. The impact blade 126 is made of a metal plate such as stainless steel, and greatly cleaves the raw material 11 by giving a large impact to the raw material 11.
[0044]
As shown in FIG. 8, the pedestal 129 is formed in a rectangular plate shape, and is installed in the radial direction. The pedestals 129 are arranged so that the adjacent pedestals 129 and 129 are orthogonal to each other.
[0045]
At each corner of the pedestal 129, a blade 128 (hereinafter, referred to as a crushing blade) whose main purpose is to crush the raw material 11 is detachably attached by bolts 131 or the like. The crushing blade 128 is made of a metal plate such as stainless steel, is formed in an elongated rectangular shape, and is arranged in the radial direction of the rotating shaft 122. Since the crushing blades 128 are smaller than the impact blades 126 and are arranged at narrow intervals, the raw material 11 can be crushed more finely. When the crushing blade 128 collides with the raw material 11, the packaging material of the raw material 11 is finely cleaved, and the contents are flipped and separated from the packaging material. The separated contents fall because of the large mass, and the packaging material is flipped off by the crushing blade 128 because of the small mass.
[0046]
The crushing blade 128 may be attached to a surface (hereinafter, referred to as a front surface) on the inlet 121A side or to a surface (hereinafter, referred to as a back surface) on the collection port 121B side with respect to the base 129. When the crushing blade 128 is attached to the front and back surfaces of one pedestal 129, the strength of the pedestal 129 can be improved. Further, when the rotating shaft 122 is rotated, the crushing blade 128 on the front side and the crushing blade 128 on the back side pass through different positions, so that the raw material 11 can be more effectively crushed.
[0047]
Further, each crushing blade 128 can be mounted on the pedestal 129 even if it is mounted by changing its front surface and back surface, or if it is mounted by changing its front end and base end. For example, three through holes are formed in the crushing blade 128 at regular intervals, and the crushing blade 128 is fixed to the pedestal 129 using two of the three through holes. With this configuration, the crushing blade 128 can be mounted even if the crushing blade 128 is turned upside down or the tip and base of the crushing blade 128 are interchanged. That is, with respect to the crushing blade 128 in a certain basic posture, a front and back reverse posture in which the front and back of the crushing blade 128 in the basic posture are reversed, and an end reverse posture in which the front and rear ends of the crushing blade 128 in the basic posture are reversed, It is possible to select four types of mounting methods including a full reversal posture in which both the front and back and the end of the crushing blade 128 in the basic posture are reversed. Thereby, the substantial life of the crushing blade 128 can be improved. Further, by changing the shape of the crushing blade 128 and the arrangement of the through holes, the posture of the crushing blade 128 can be changed for each mounting method. For example, the crushing blade 128 can be protruded farther, or the crushing blade 128 can be attached at an angle. Thereby, the optimal posture of the crushing blade 128 can be selected and attached according to the type of the raw material 11 and the like.
[0048]
In addition, the shape of the crushing blade 128 is not limited to the above-mentioned one, and various shapes such as one having a sharp tip at an acute angle and one having a rounded arc can be used. Further, a metal rod may be attached as the crushing blade 128.
[0049]
As shown in FIG. 6, a guide member 132 is provided inside the casing 121. The guide member 132 is made of a metal rod such as stainless steel. The metal rod is formed in a spiral shape around the rotation shaft 122 and is fixed in contact with the inner peripheral surface of the casing 121. The raw material 11 crushed by the impact blade 126 and the crushing blade 128 is guided by the guide member 132 while being rotated in the same direction as the rotary shaft 122 and is sent out from the inlet 121A to the recovery port 121B. The configuration of the guide member 132 is not limited to the configuration using a metal rod, and is formed by providing a convex portion (or a concave groove) on the inner peripheral surface of the casing 121 or the inner peripheral surfaces of screens 135 and 136 described later. May be.
[0050]
A resistance plate 133 and a weir 134 are provided near the recovery port 121B. The weir 134 is provided immediately before the recovery port 121B, and is configured to close the inside of the casing 121 to a certain height position. Therefore, only the packaging material having a small mass is wound up by the crushing blade 128 and discharged from the recovery port 121B over the weir 134, and the heavy content is repelled inside by the weir 134. The height of the weir 134 can be adjusted according to the type of the raw material 11 and the like, and the weir 134 is adjusted to the height position where the recovery rate of the packaging material is the best while preventing the discharge of the contents. You.
[0051]
On the other hand, the resistance plate 133 is formed in a disk shape having a diameter slightly smaller than the inner diameter of the casing 121, and is attached to the rotating shaft 122. By providing the resistance plate 133, the packaging material that is flipped to the recovery port 121B side receives resistance and weakens its momentum, so that the contents remaining in the packaging material can be reliably separated from the packaging material. That is, in the case where the resistance plate 133 is not provided, when the crushing blade 128 vigorously blows the packaging material to the collection port 121B, the contents remaining in the packaging material are discharged from the collection port 121B without being sufficiently separated. Although there is a possibility, this can be prevented by providing the resistance plate 133. Thereby, the separation efficiency between the contents and the packaging material can be improved.
[0052]
The resistance plate 133 is provided so as to be slidable in the axial direction of the rotating shaft 122 so that the distance between the resistance plate 133 and the weir 134 can be adjusted. Accordingly, the magnitude of the resistance of the packaging material can be adjusted, so that the separation process can always be performed with high separation efficiency regardless of the type of the raw material 11.
[0053]
The lower half of the casing 121 is a screen 135 or a screen 136 so that the contents separated from the packaging material and dropped can pass through. That is, the casing 121 has an opening in the lower half, and arc-shaped screens 135 and 136 are attached to the opening. The screen 135 is attached to the input port 121A side as shown in FIG. 6, and the screen 136 is attached to the recovery port 121B side. Further, as the screens 135 and 136, a rectangular screen having a rectangular eye or a circular screen having a circular eye is used, and one side or the diameter of the eye is formed in about 2 to 15 mm, preferably 8 to 10 mm. I have. The screen 136 has a smaller eye interval than the screen 135.
[0054]
As shown in FIG. 7, the screen 135 is formed in a semicircular shape, and is detachably attached to the casing 121 with bolts 137 and the like. The screen 135 is attached in a posture inclined at an inclination angle α in the rotation direction of the rotation shaft 122. The inclination angle α is preferably set according to the type of the raw material 11, the rotation speed of the rotation shaft 122, and the like, and is set to, for example, 30 degrees. When the screen 135 is attached in such a manner as to be inclined in the rotation direction of the rotation shaft 122, the screen 136 is disposed at a position where the contents can be efficiently discharged. That is, since the contents are wound up in the rotation direction by the impact blade 126, the contents can be discharged most efficiently by arranging the screen 135 inclined in the rotation direction.
[0055]
Also, by inclining the screen 135, the work of attaching and detaching the screen 135 can be easily performed. That is, by inclining the screen 135, the opening on the attachment / detachment side (the left side in FIG. 7) of the screen 135 is widened, and the attachment / detachment work of the screen 135 is facilitated.
[0056]
As shown in FIG. 8, the screen 136 is formed in a semicircular shape similarly to the screen 135, and is detachably attached to the casing 121 by bolts 138 and the like. The screen 136 is attached in a posture inclined at an inclination angle α in the rotation direction of the rotation shaft 122. The inclination angle α is preferably set according to the type of the raw material 11, the rotation speed of the rotation shaft 122, and the like, and is set to, for example, 30 degrees. When the screen 136 is attached in such a manner as to be inclined in the rotation direction of the rotating shaft 122, the screen 136 is disposed at a position where the contents can be efficiently discharged. That is, since the contents are wound up in the rotation direction by the crushing blade 128, the contents can be discharged most efficiently by disposing the screen 136 at an angle in the rotation direction.
[0057]
In addition, by inclining the screen 136, the attachment / detachment operation can be performed from one side of the screen 136, and the maintainability can be improved.
[0058]
Since the screens 135 and 136 pass contents containing a large amount of water and salt, clogging and oxidation easily occur, and it is necessary to perform regular maintenance. Therefore, by attaching the screens 135 and 136 at an angle, the work efficiency such as maintenance can be greatly improved.
[0059]
As shown in FIGS. 7 and 8, the periphery of the casing 121 is covered with a cover 139. The lower part of the cover 139 is opened, and the contents of the raw material 11 fall into the dissolution tank 20 from this opening and are charged. Therefore, the contents dropped after passing through the screens 135 and 136 are collected in the dissolving tank 20 without scattering to the outside.
[0060]
By rotating the rotating shaft 122 at a high speed in the main body 120 configured as described above, the raw material 11 is crushed by the rotational impact of the crushing blade 128 and the impact blade 126 in the radial direction, and the packaging material is torn. The raw material 11 in which the packaging material has been split is guided by the guide member 132 and moves to the collection port 121B side. At this time, since the packaging material is light and has high air resistance, it is blown to the recovery port 121B by the rotation of the impact blade 126 and the crushing blade 128. On the other hand, the contents having low air resistance fall downward, pass through the screens 135 and 136, and are put into the dissolving tank 20. In addition, in order to improve the diffusion of the content charged in the dissolving tank 20, the area of the screen may be increased, and the content may be dispersed over a wide range.
[0061]
As described above, according to the main body 120, the crushing process of the raw material 11 and the separation process of the packaging material and the contents can be performed simultaneously. Therefore, the process from crushing to separation can be performed quickly, and oxidation of iron powder starting immediately after crushing can be suppressed as much as possible. Further, since the raw material 11 is flipped by the crushing blade 128 and moves while being in various postures, the separation efficiency of the packaging material and the contents is very good. Therefore, the contents are put into the dissolving tank 20 without remaining in the packaging material.
[0062]
Further, according to the above-described separator, the packaging material for the raw material 11 is cut into the main body 120 after being cut by the pretreatment machine 100, so that the separation efficiency in the main body 120 is high. Therefore, even if the raw material is difficult to crush (for example, a small and lightweight raw material, a raw material having a strong toughness in a middle bag, or a product in which a plurality of products are connected), it is possible to reliably separate the contents from the packaging material. it can.
[0063]
Further, since the separation efficiency in the main body 120 is improved, the size of the main body 120 can be reduced. That is, when the pretreatment machine 100 is not provided, the raw material 11 that is difficult to crush cannot be completely crushed unless the large main body 120 is used. Even with 120, it can be crushed reliably. Further, since the pretreatment device 100 has a simple structure as described above and is small, the size of the entire separator can be reduced.
[0064]
Although the main body 120 has the impact blade 126 for roughly crushing the raw material 11, only the crush blade 128 may be attached to the rotating shaft 122.
[0065]
Although two types of screens 135 and 136 are provided to increase the discharge efficiency in accordance with the discharge amount of the content, only one type of screen 136 may be used.
[0066]
The contents that have been crushed and separated in the main body 120 are put into the dissolution tank 20 and subjected to cooling dissolution processing. A supply line 33 is connected to the dissolving tank 20, and water is supplied from the supply line 33 so that the water level in the dissolving tank 20 is kept constant.
[0067]
As shown in FIG. 2, the dissolving tank 20 is arranged close to the main body 120. That is, the liquid surface of the dissolving tank 20 and the screens 135 and 136 of the main body 120 are arranged close to each other. Thus, the content separated by the main body 120 is immersed in the solution in the dissolving tank 20 immediately after passing through the screens 135 and 136.
[0068]
The liquid in the dissolving layer 20 is controlled so that the amount of dissolved oxygen always becomes a low value. That is, a gas supply line 40 for an inert gas is connected to the dissolving tank 20, a valve 41 is opened and closed according to the amount of dissolved oxygen measured by the measuring device 39, and the inert gas is supplied via the gas supply line 40. Is supplied. As a result, the liquid in the dissolving tank 20 is always maintained at a low dissolved oxygen content, so that the contents immersed in this liquid can be shielded from the air.
[0069]
The contents immersed in the liquid are diffused by rotating the stirring blade 36 by the motor 37 and stirring the liquid. The agitating blade 36 is used to make the contents having a wide sedimentation velocity distribution as uniform as possible, and in particular, to agitate components (iron powder) which have a high sedimentation velocity and are likely to stay at the bottom. It is preferable to dispose along the 20A and close to the bottom surface 20A. For example, when the bottom surface 20A is inclined downward toward the connection of the discharge line 35, it is preferable that the stirring blades 36 are also arranged along the inclined surface. As a result, an agitated flow having no stagnation area is formed, so that the iron having a high sedimentation velocity is also diffused without accumulating on the bottom surface 20A of the melting tank 20, and a slurry liquid in which solids are uniformly mixed is formed. This slurry liquid is smoothly discharged from the discharge line 35 along the inclined bottom surface 20A.
[0070]
As described above, in the cooling dissolution treatment, immediately after the contents separated by the crush separation treatment pass through the screens 135 and 136, the contents are immersed in the solution in the dissolution tank 20 and are cut off from the air. Can be suppressed. That is, when the outer bag of the raw material 11 is split open, the iron powder of the content is exposed to air, and the oxidation reaction is rapidly accelerated, but the content is quickly immersed in a liquid having a small amount of dissolved oxygen. This can suppress the oxidation reaction.
[0071]
In the cooling and dissolving treatment, by immersing the contents in the liquid in the dissolving tank 20, it is possible to cool the contents whose temperature has slightly increased in the crushing and separating treatment and lower the temperature.
[0072]
Further, in the cooling dissolution treatment, the salts of the contents can be dissolved in the liquid by stirring with the stirring blade 36, and the salts adhered to the iron powder can be washed away to wash the iron powder.
[0073]
As described above, according to the separation and recovery apparatus 10 of the present embodiment, the crushing process of the raw material 11 and the separation process of the package and the contents are simultaneously performed by the separator, and the separated contents are immediately dissolved. Since it is immersed in the liquid in the tank 20, the iron powder can be collected in a state where the oxidation reaction is suppressed as much as possible.
[0074]
The use of the present invention is not limited to the separation and collection of iron powder from unused items of disposable warmers, but the separation and collection of contents from bags containing powdery contents. If it does, it can be widely applied to other uses.
[0075]
【The invention's effect】
As described above, according to the separator according to the present invention, a casing formed in a laterally cylindrical shape, a blade attached to a rotating shaft that rotates in the casing, and a casing from an input port to a discharge port. Since it is composed of the guide member for guiding the bag and the screen forming the lower half of the casing, the bag and the contents can be automatically separated and collected simply by rotating the rotating shaft. In addition, with such a configuration, the bag moves in various postures at the time of separation, so that the contents hardly remain in the bag, and the contents can be collected at a high recovery rate.
[0076]
In addition, if a pretreatment machine is provided at the front stage of the charging port and the bag is cut and then charged into the main body, the content separation efficiency can be further improved.
[Brief description of the drawings]
FIG. 1 is a diagram showing a processing procedure in a separation and recovery apparatus.
FIG. 2 is a front sectional view showing a separator and a dissolving tank of the present invention.
FIG. 3 is a side view showing a separator.
FIG. 4 is a plan view showing a pretreatment machine.
FIG. 5 is a sectional view taken along the line 5-5 in FIG. 4;
FIG. 6 is a front sectional view showing a main body of the separator.
FIG. 7 is a sectional view taken along the line 7-7 in FIG. 6;
FIG. 8 is a sectional view taken along line 8-8 in FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Separation and recovery apparatus, 11 ... Raw material, 18 ... Collection bag, 20 ... Dissolution tank, 100 ... Pretreatment machine, 101 ... Device main body, 102 ... Roll, 103 ... Roll, 104 ... Motor, 105 ... Gear, 106 ... Gear 107, a belt, 108, a cutting blade, 109, a cutting blade, 110, a pulley, 111, a pulley, 112, a scraper, 113, a scraper, 120, a main body, 121, a casing, 122, a rotating shaft, 123, a pulley, 124 ... belt, 125 ... motor, 126 ... impact blade, 127 ... pedestal, 128 ... crushing blade, 129 ... pedestal, 130 ... bolt, 131 ... bolt, 132 ... guide member, 133 ... resistance plate, 134 ... weir, 135 ... screen 136 ... screen

Claims (3)

What is claimed is: 1. A separator for separating the contents from a bag in which the contents in the form of powder and granules are stored, wherein the separator is formed in a horizontal cylindrical shape, and an inlet of the bag is provided at one end, and the other side is provided. A collecting port for the bag is provided at an end of the casing, and a casing provided with a screen at a lower portion,
A blade that is attached to a rotating shaft provided inside the casing and rotates the rotating shaft to tear open the bag thrown in from the inlet.
Guide means spirally formed along the inner peripheral surface of the casing,
By rotating the rotary shaft, the bag inserted from the input port is moved along the guide means to the recovery port along the guide means while being cut off by the blade, and is collected. A separator wherein the contents are separated and recovered via the screen. The blade is formed in a plate shape and is detachably attached to the rotary shaft. The blade in the basic posture is turned upside down with respect to the basic posture. 2. The separator according to claim 1, wherein an edge-reversed posture in which the end is reversed, and a full-reversed posture in which the blade in the basic posture is turned upside down and the end is reversed can be mounted. The inlet of the separator is provided with a pretreatment machine for making a cut in the bag. 3. The separator according to claim 1, wherein the unevenness is arranged close to and parallel to each other so as to mesh with each other, and rotates at a different rotation speed in the opposite direction.

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