JP2004009020A - Solid foreign substance sorter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solid foreign substance sorter capable of sorting solid foreign substances from soft and fragile materials to be treated mixed to which solid foreign substances are mixed. <P>SOLUTION: An rotary shaft 6 for discharging the foreign substances and an rotary shaft 5 for scraping them are arranged in nearly parallel in a case body 4. Interdigitated fingers latching sections 6a and interdigitated fingers scraping sections 5a are alternately equipped with the respective rotary shafts 5, 6. The soft and fragile materials to be treated 3 pass through the gaps of the interdigitated fingers by rotation of the rotary shaft 5 to be discharged from an outlet 4b for the materials in the case body 4. When the rotation of the rotary shaft 5 is blocked by the solid foreign substances 2, each of the rotating directions of the rotary shafts 5, 6 is reversed. Thereby, the substances 2 latched to the latching sections 6 are moved to the edge of the case body 4 and discharged from a foreign substance outlet 4c by the rotation of the rotary shaft 6. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a solid foreign matter separation apparatus that separates a processing object mixed with solid foreign matter into solid foreign matter and a processing object.
[0002]
[Prior art]
In recent years, garbage discharged from homes and the like is separated and collected in advance into garbage, hardware garbage, glass garbage, paper garbage, and the like. Thereby, each refuse is efficiently reused.
[0003]
However, even though households are obliged to separate waste, it is practically impossible to completely prevent foreign matter from entering garbage. Therefore, in order to separate garbage and foreign matter, for example, a separation apparatus as described in Japanese Patent Application Laid-Open No. Hei 5-23608 is used.
[0004]
The sorting apparatus includes a case body having a receiving opening for receiving garbage mixed with foreign matter at an upper portion, a drum arranged in the case body, and a rotating shaft to which a stirring blade arranged in the drum is attached. ing. According to this sorting apparatus, the rotating shaft is rotated, and the foreign matter mixed garbage is crushed in the drum by the stirring blade. Then, due to the sending-out air generated by the stirring blades, relatively light-weight packaging material and the like among the crushed foreign matter-containing garbage are discharged from the packaging material discharge port formed on the side of the case body. The garbage from which the packaging material and the like have been separated is discharged from a garbage discharge port formed at the lower part of the case body through a sieve hole at the lower part of the drum.
[0005]
[Problems to be solved by the invention]
However, in the sorting apparatus, when solid foreign matter such as a glass bottle is mixed in the garbage, the garbage is crushed together with the solid foreign matter, and is discharged from the garbage discharge port together with the garbage. That is, when solid foreign matter such as glass is mixed into a fragile treatment target such as garbage, the separation device cannot separate the treatment target from the solid foreign matter.
[0006]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a solid foreign matter separation device capable of separating solid foreign matter from a soft and fragile object to be treated mixed with solid foreign matter. It is in.
[0007]
[Means for Solving the Problems]
In order to achieve the object, in the invention according to claim 1, a solid foreign matter separation device that separates solid foreign matter mixed in a fragile processing object from the processing object, wherein the solid foreign matter is mixed. A case body having a receiving opening for receiving an object to be processed formed at an upper portion thereof, and a hook provided on a foreign matter discharging rotary shaft disposed substantially horizontally in the case body and extending in a radial direction of the foreign matter discharging rotary shaft. A locking member having a comb-tooth portion, for locking the processing object mixed with the solid foreign matter received from the receiving opening at the locking comb-tooth portion, and a rotating shaft for discharging the foreign matter in the case body; And provided on the rotary shaft for sweeping arranged in a horizontal direction, extending in the radial direction of the rotary shaft for sweep, and alternately with the latching comb-tooth portion of the latching member. Scraping member and a foreign matter discharge drive for driving the foreign matter discharging rotary shaft A rotating shaft braking unit that brakes the rotating shaft for discharging foreign matter, a sweeping drive unit that drives the rotating shaft for scraping, and a rotating shaft for sweeping that is formed at a lower portion of the case body. A processed material discharge port from which the object to be processed that has passed through the hanging comb tooth portion is discharged by the scraping comb tooth portion entering the hanging comb tooth portion from above and extracting from below, A foreign object discharge port formed on a side portion of the case body, wherein the solid foreign object is rotated in a direction in which the solid foreign object moves upward together with the engaging comb teeth portion, and the solid foreign object is discharged. , Is provided.
[0008]
According to the first aspect of the present invention, the processing object into which the solid foreign matter received from the receiving opening of the case body is mixed is hooked by the hooking comb teeth portion. In this state, the scraping drive unit is driven to rotate the scraping rotary shaft in a direction in which the scraping comb teeth enter the latching comb teeth from above and withdraw from below. Here, when the solid foreign matter mixed in the hooking comb portion is not approaching, the fragile processing target is crushed by the hooking comb portion and the scraping comb tooth portion, and is pressed by the scraping comb tooth portion. And passes through the gap between the comb teeth in the hanging comb tooth portion. The object to be processed that has passed through the gap falls as it is under its own weight and is discharged from the object outlet of the case body.
Further, when solid foreign matter mixed into the object to be processed reaches the hanging comb teeth of the rotating shaft for discharging foreign matter, the solid foreign matter is pinched by the hanging comb teeth and the scraping comb teeth descending from above. It is. Even if the solid foreign matter is sandwiched between the hooking comb tooth portion and the scraping comb tooth portion, the solid foreign matter is not crushed, and the solid foreign object prevents the rotation of the rotary shaft for scraping.
From this state, the foreign matter discharging drive unit is driven to rotate the foreign matter discharging rotary shaft in a direction in which the solid foreign matter moves upward together with the hanging comb teeth. As a result, the solid foreign matter hooked on the hooking comb teeth moves to the side of the case body and is discharged from the foreign matter discharge port.
[0009]
Therefore, the processing object mixed with the solid foreign matter can be separated into the solid foreign matter and the processing object. That is, even if the garbage is insufficiently separated, garbage or the like from which solid foreign matter such as a glass bottle has been separated can be obtained, which is extremely convenient when the garbage and the like are reused.
[0010]
According to a second aspect of the present invention, in the solid foreign matter sorting apparatus according to the first aspect, a rotation control unit connected to the foreign matter discharge drive unit and the sweep drive unit, and a drive load of the sweep drive unit are reduced. And a load detection unit connected to the rotation control unit, wherein the rotation control unit is provided at a position where the object to be processed in which the solid foreign matter is mixed is hung at the hanging comb tooth unit. The foreign matter discharge drive unit is controlled so as to stop the foreign matter discharge rotation shaft, and the scraping comb tooth part enters the hooking comb tooth part from above and pulls out from below. A processing object discharge control unit that controls the scraping drive unit to rotate a shaft; and a foreign matter mixture determination that determines mixing of the solid foreign matter into the processing object based on a load detected by the load detection unit. Means, and said foreign matter mixing determination means, After it is determined that the solid foreign matter is mixed into the object to be processed, the foreign matter discharging drive unit and the foreign matter discharging rotation shaft rotate in a direction in which the solid foreign matter moves upward together with the hanging comb teeth portion. And a foreign matter discharge control unit for controlling the rotating shaft braking unit.
[0011]
According to the second aspect of the present invention, in addition to the operation of the first aspect, the foreign matter discharge drive unit and the scraping drive unit are controlled by the processing target discharge control unit, and the foreign matter discharge rotary shaft is stopped. Since the scraping rotary shaft rotates in a direction in which the scraping comb-tooth portion enters the hooking comb-tooth portion from above and withdraws from below, the processing target is discharged from the target discharge opening.
Here, when the solid foreign matter reaches the hooking comb tooth portion, the solid foreign matter hooked on the hooking comb tooth portion prevents the rotation of the rotary shaft for scraping, thereby increasing the load on the scraping drive unit. Then, after the increase in the load of the scraping drive unit, the foreign matter mixing determining means determines that the solid foreign matter has entered, and then the foreign matter discharging control means causes the foreign matter to move in the direction in which the solid foreign matter moves upward together with the hooking comb teeth. The foreign matter discharge drive unit is controlled so that the discharge rotation shaft rotates, and the solid foreign matter is guided to the foreign matter discharge port.
[0012]
Therefore, the processing object mixed with the solid foreign matter can be automatically separated into the solid foreign matter and the processing object. That is, the worker or the like monitors the mixing of the solid foreign matter, and does not need to operate the rotation and stop of the foreign matter discharge drive unit and the scraping drive unit when mixing the solid foreign matter, which is extremely advantageous in practical use.
[0013]
According to a third aspect of the present invention, in the solid foreign matter separating apparatus according to the second aspect, the rotation control unit determines that the solid foreign matter has mixed into the processing target by the foreign matter mixing determination unit. A swaging rotary shaft reversing control unit for controlling the swaging drive unit so as to rotate the swaging rotary shaft in a direction in which the swaging comb tooth unit is separated upward from the latching comb tooth unit; The discharge control unit controls the foreign matter discharge drive unit after the sweeping rotation shaft is rotated by the sweeping shaft reverse rotation control unit.
[0014]
According to the third aspect of the present invention, in addition to the operation of the second aspect, when the load of the scraping drive unit is increased and the foreign matter mixing determining unit determines that the solid foreign matter is mixed, the rotary shaft for scraping is used. The scraping drive unit is controlled by the reverse rotation control means, and the scraping rotary shaft rotates in a direction in which the scraping comb teeth are separated upward from the latching comb teeth. As a result, the solid foreign matter is released from the state where the solid foreign matter is sandwiched between the hooking comb teeth and the scraping comb teeth. Thereafter, the foreign matter discharge drive unit is controlled by the foreign matter discharge control means, and the solid foreign matter is guided to the foreign matter discharge port.
[0015]
Therefore, when the solid foreign matter is hung on the hooking comb teeth portion, the foreign matter discharging rotary shaft can be rotated in a state where the upper part of the solid foreign matter is opened, and the driving load of the foreign matter discharging drive unit can be reduced. Can be.
[0016]
According to a fourth aspect of the present invention, in the solid foreign matter sorting apparatus according to the second or third aspect, the scraping drive unit has an electric motor, and the load detection unit is configured to control the load of the scraping drive unit as a load. The current value of the electric motor is detected, and the foreign matter contamination determination unit determines that the processing target object is detected when the current value of the electric motor detected by the load detection unit exceeds a preset overload current value. It is characterized in that it is determined that the solid foreign matter has entered.
[0017]
According to the fourth aspect of the invention, in addition to the function of the second or third aspect, when the rotation of the rotary shaft for scraping is prevented by the solid foreign matter hooked on the hooking comb teeth portion, the load of the electric motor is reduced. The current value detected by the electric motor increases. When the current value exceeds the set overload current value, the foreign matter intrusion determining means determines that solid foreign matter has entered.
[0018]
Therefore, when the solid foreign matter is mixed, the current value of the electric motor is reliably increased, so that the mixing of the solid foreign matter can be accurately determined.
[0019]
According to a fifth aspect of the present invention, in the solid foreign matter separating apparatus according to the fourth aspect, the foreign matter mixing determining means determines that a current value of the electric motor detected by the load detecting means exceeds the set overload current value. When the preset overload duration time elapses in this state, it is determined that the solid foreign matter has entered the processing target.
[0020]
According to the fifth aspect of the present invention, in addition to the operation of the fourth aspect, if the rotation of the rotary shaft for scraping is prevented by the set overload duration by the solid foreign matter hooked on the hooking comb teeth portion, the foreign matter mixing determination is made. It is determined by means that solid foreign matter has entered the processing target. That is, it is not determined that solid foreign matter has entered the processing target when the electric motor is started or when the processing target is temporarily clogged in the hanging comb teeth portion.
[0021]
Therefore, it is possible to reduce the possibility of erroneous determination by the foreign matter mixing determination means, and to more accurately determine the mixing of solid foreign matter.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 6 show an embodiment of the present invention. FIG. 1 is a top sectional view of a solid foreign matter separating apparatus, FIG. 2 is a front sectional view of a solid foreign matter separating apparatus, and FIG. 3 is an operation of discharging garbage. FIG. 4 is an explanatory diagram showing an operation of discharging solid foreign matter, FIG. 5 is a schematic block diagram of a solid material separating apparatus, and FIG. 6 is a timing chart showing a change in a current value of a scraping drive motor. is there.
[0023]
The solid foreign matter separation apparatus 1 separates solid foreign matter 2 such as a glass bottle mixed in a garbage 3 as a fragile processing target from the garbage 3. As shown in FIG. 2, the fixed foreign matter sorting apparatus 1 includes a case body 4 having an upper portion formed with a receiving opening 4a for receiving the garbage 3 mixed with the solid foreign matter 2. A garbage discharge port 4b for discharging the garbage 3 from which the solid foreign matter 2 has been removed is formed at the lower part of the case body 4, and the solid foreign matter 2 separated from the garbage 3 is formed at one side of the case body 4. A foreign matter discharge port 4c for discharging is formed. Further, the fixed foreign matter sorting apparatus 1 includes a case rotating shaft 5 arranged in the case body 4 so as to be substantially horizontal, and a foreign matter discharging member arranged horizontally with the sweep rotating shaft 5 in a horizontal direction. And a rotary shaft 6.
[0024]
As shown in FIGS. 1 and 2, each of the rotating shafts 5 and 6 is pivotally supported on a side surface of the case body 4. The swiveling rotary shaft 5 is provided with a sweeping member 5b having a sweeping comb tooth portion 5a arranged side by side at a predetermined interval in the circumferential direction. The foreign matter discharging rotary shaft 6 is also provided with a locking member 6b having locking comb teeth 6a arranged side by side at predetermined intervals in the circumferential direction. As shown in FIGS. 3 (a) and 4 (a), when the hanging comb tooth 6a is located substantially directly below the receiving opening 4a, the garbage 3 into which the solid foreign matter 2 has been mixed is caught by the hanging comb tooth. 6a. As shown in FIG. 1, each latching comb tooth 6a is arranged so as to be alternate with each scraping comb tooth 5a. The scraping comb teeth 5a and the latching comb teeth 6a extend in the radial direction, and are provided at four intervals of approximately 90 °. Further, in the present embodiment, each of the engaging comb teeth 6a of the rotating shaft 6 for discharging foreign matter has a dimension in the width direction (compared with each of the scraping comb teeth 5a of the rotating shaft 5 for scraping). The axial dimensions of each of the rotating shafts 5 and 6) are formed large.
[0025]
That is, as shown in FIG. 3 (c), the staking rotary shaft 5 rotates, and the squeezing comb teeth portion 5a enters the engaging comb teeth portion 6a from above and withdraws from below, thereby latching. The garbage 3 that has passed through the comb teeth 6a is discharged from the garbage discharge port 4b. Further, as shown in FIG. 4 (d), the solid foreign matter 2 is rotated from the foreign matter discharge port 4c by rotating the foreign matter discharging rotary shaft 6 in the direction in which the solid foreign matter 2 moves upward together with the hooking comb teeth 6a. Is discharged.
[0026]
As shown in FIG. 1, the solid foreign matter separating device 1 includes a scraping drive motor 7 as a sweeping drive unit for driving the rotating shaft 5 for scraping, and a foreign matter discharge driving unit for driving the rotating shaft 6 for foreign matter discharge. And a foreign matter discharge drive motor 8 as a motor. Each of the motors 7 and 8 is arranged on one end side of each of the rotating shafts 5 and 6 and is connected to the rotation control unit 100.
[0027]
In the present embodiment, each of the motors 7 and 8 is an electric motor that can rotate forward and reverse. That is, in each of the motors 7, 8, the direction in which the comb teeth 5a, 6a are wound from above (hereinafter, referred to as the forward rotation direction) and the direction in which the comb teeth 5a, 6a are moved upward. In the direction (hereinafter, referred to as a reverse rotation direction). That is, the forward rotation direction of the raking rotary shaft 5 is a direction in which the raking comb teeth 5a enter the latching comb teeth 6a from above and withdraw from below. In addition, the reverse rotation direction of the foreign matter discharging rotary shaft 6 is a direction in which the solid foreign matter 2 hooked on the hooked comb tooth part 6a located directly below the receiving opening 4a moves upward.
[0028]
Further, the rotating shaft 6 for discharging foreign matter is provided with a rotating shaft braking unit 6c connected to the control unit 100. The control unit 100 brakes and fixes the foreign matter discharge rotation shaft 6 by the rotation shaft braking unit 6c when the scraping rotation shaft 5 rotates forward, and releases the braking at the same time as the foreign matter discharge rotation shaft 6 starts reverse rotation. Control.
[0029]
Here, the current at the time of driving each of the motors 7 and 8 is substantially proportional to the load required to drive each of the rotating shafts 5 and 6, and this current is detected by the rotation control unit 100. That is, in the present embodiment, the scraping drive motor 7 itself constitutes a load detecting means for detecting a driving load of the scraping drive motor 7.
[0030]
As shown in FIG. 1, encoders 9 and 10 are provided on the other end sides of the rotating shafts 5 and 6, respectively, for detecting the rotating state of the rotating shafts 5 and 6, respectively. Each of the encoders 9 and 10 is connected to the rotation control unit 100, and the rotation angle, the rotation speed, and the like of each of the rotation shafts 5 and 6 are input to the rotation control unit 100.
[0031]
As shown in FIG. 5, the rotation control unit 100 includes an arithmetic unit 101 including a CPU and the like, and a storage unit 102 including a ROM and a RAM. The storage unit 102 stores a garbage discharge control program 103, a foreign matter mixing determination program 104, a foreign matter mixing reversal program 105, a foreign matter discharge control program 106, a set overload current value I, and a set overload continuation time T. Have been. In other words, in the present embodiment, the rotation control unit 100 includes the calculation unit 101 and the storage unit 102 that constitute the processing object discharge unit, the foreign matter mixing determination unit, the scraping rotation axis reversing unit, and the foreign matter discharge control unit. have.
[0032]
The garbage discharge control program 103 controls the foreign matter discharge drive motor 8 to be in a stopped state, thereby stopping the foreign matter discharge rotary shaft 6 and controlling the scraping drive motor 7 to be in a normal rotation state. This is a program for rotating the use rotation shaft 5 in the normal rotation direction. As described above, when the rotary shaft 5 for scraping rotates in the normal rotation direction, the rotary shaft 6 for discharging foreign matter is braked by the rotary shaft brake 6c.
[0033]
The foreign matter mixing determination program 104 is a program for determining the mixing of the solid foreign matter 2 in the garbage 3 based on the load detected by the current of the scraping drive motor 7 as the load detecting means. In the present embodiment, when a current exceeding the preset set overload current value I is continuously detected for the preset set overload duration T, it is determined that the solid foreign matter 2 has entered. judge.
[0034]
Here, the set overload current value I is set higher than the current value of the scraping drive motor 7 when scraping the garbage 3 by each scraping comb tooth portion 5a of the scraping rotary shaft 5 without trouble. The current is set to be lower than the current value of the scraping drive motor 7 when the rotation of the scraping rotary shaft 5 is substantially stopped by the solid foreign matter 2 or the like. That is, when the rotation of the rotary shaft 5 for scraping is stopped by the solid foreign matter 2, it always exceeds the set overload current value I.
[0035]
By the way, at the time of starting the rotary shaft 5 for scraping, the current value of the scraping drive motor 7 becomes relatively large. The set overload duration time T is set longer than the time when the current value of the scraping drive motor 7 becomes relatively large when the rotating shaft 5 for scraping is started.
[0036]
When the foreign matter mixing determination program 104 determines that the solid foreign matter 2 has mixed into the garbage 3, the foreign matter mixing reverse program 105 stops the scraping drive motor 7 for a predetermined time and then controls the scraping drive motor 7. This is the program to reverse. In this embodiment, when the rotation of the rotary shaft 5 for scraping is detected to be reversed by a predetermined angle by the encoder 9, the scraping drive motor 7 is stopped.
[0037]
The foreign matter discharge control program 106 is a program for rotating the foreign matter discharge rotary shaft 6 in the reverse rotation direction after the scraping rotary shaft 5 has been reversed and stopped by the foreign matter mixing reversal program 105. In the present embodiment, when the encoder 10 detects that the rotation shaft 6 for foreign matter discharge has been reversed by approximately 90 °, the foreign matter discharge drive motor 8 is stopped. As described above, when the rotation of the foreign matter discharge rotation shaft 6 in the reverse rotation direction starts, the braking of the foreign matter discharge rotation shaft 6 by the rotation shaft braking unit 6c is released.
[0038]
The operation of the solid foreign matter separating apparatus 1 configured as described above will be described.
[0039]
As shown in FIG. 3A, the garbage 3 introduced from the receiving opening 4a of the case body 4 is hung on each of the comb teeth portions 5a and 6a, and is prevented from falling. It becomes jammed. Here, the garbage discharge control program 103 is executed, the rotating shaft 6 for discharging foreign matter is stopped, and the rotating shaft 5 for scraping is rotated in the normal rotation direction.
[0040]
Thereby, the fragile garbage 3 is crushed by the comb teeth 5a, 6a as shown in FIG. 3B, and is pressed by the scraping comb teeth 5a of the rotating shaft 5 for scraping. It passes through the gap between the comb teeth of the guide member 6a of the rotating shaft 6 for discharging foreign matter. The garbage 3 that has passed through the gap falls as it is under its own weight, as shown in FIG. 3C, and is discharged from the garbage discharge port 4b of the case body 4.
[0041]
Here, when the solid foreign matter 2 mixed into the garbage 3 reaches the hooking comb teeth portion 6a of the rotating shaft 6 for foreign matter discharge, as shown in FIG. It hooks on the part 6a. And it is pinched by this hooking comb tooth part 6a and the scraping comb tooth part 5a of the rotary shaft 5 for scraping which descends from above. Even when the solid foreign matter 2 is pinched by the comb teeth portions 5a and 6a in this manner, the solid foreign matter 2 is not crushed, and the rotation of the rotary shaft 5 for scraping is prevented by the solid foreign matter 2. Thereby, as shown in FIG. 6, the load of the scraping drive motor 7 increases, and the current value detected by the scraping drive motor 7 increases. That is, this current value exceeds the set overload current value I. Then, the rotation of the rotary shaft 5 for scraping is prevented by the set overload duration time T due to the solid foreign matter 2 hooked on the hooking comb teeth portion 6a, and the state where the set overload current value I is exceeded is set. After the continuation of the time T, the foreign matter mixture determination program 104 determines that the solid foreign matter 2 has entered.
[0042]
When it is determined by the foreign matter mixing determination program 104 that the solid foreign matter 2 is mixed, as shown in FIG. 4B, the scraping comb teeth portion 5a is moved upward from the hooking comb teeth portion 6a by the foreign matter mixing reverse rotation program 105. The rotary shaft 5 for scraping is reversed in the separating direction by a predetermined angle. As a result, the solid foreign object 2 is released from the state sandwiched between the comb teeth portions 5a and 6a.
[0043]
Thereafter, as shown in FIG. 4C, the foreign matter discharge rotation shaft 6 is rotated backward by approximately 90 ° by the foreign matter discharge control program 106. As a result, as shown in FIG. 4D, the solid foreign matter 2 hooked on the hooking comb teeth 6a moves to the side of the case body 4 and is guided to the foreign matter outlet 4c. Further, the engaging comb tooth 6a adjacent to the guide member 6a used for engaging and guiding the solid foreign matter 2 moves to a position where it is engaged.
[0044]
Thereafter, the discharge control program 103 is executed again, and the discharge of the garbage 3 as shown in FIGS. 3 (a), 3 (b) and 3 (c) is restarted.
[0045]
As described above, according to the solid foreign matter separation device 1 of the present embodiment, the fragile garbage 3 falls through the gap between the hanging comb teeth 6a, and the solid foreign matter 2 such as a glass bottle falls on the hanging comb teeth 6a. The garbage 3 which is dropped is discharged from the garbage discharge port 4b, and the solid foreign matter 2 hooked on the guide member 6a is discharged from the foreign matter discharge port 4c. Waste garbage 3 can be separated into solid foreign matter 2 and garbage 3. Therefore, even if the garbage 3 is not sufficiently separated, the garbage 3 from which the solid foreign matter 2 has been separated can be obtained, which is extremely convenient when the garbage 3 is reused.
[0046]
Further, according to the solid foreign matter separation device 1 of the present embodiment, after it is determined that the solid foreign matter 2 has entered due to an increase in the load of the scraping drive motor 7, the solid foreign matter 2 is moved upward together with the hooking comb teeth 6a. The foreign matter discharge drive motor 8 is controlled so that the foreign matter discharge rotation shaft 6 rotates in the moving direction, and the solid foreign matter 2 is guided to the foreign matter discharge port 4c. Can be automatically separated into solid foreign matter 2 and garbage 3. That is, the worker or the like monitors the mixing of the solid foreign matter 2 and does not need to operate the rotation / stop of the foreign matter discharge drive motor 8 and the scraping drive motor 7 when the solid foreign matter 2 is mixed, which is extremely advantageous in practical use. .
[0047]
Further, according to the solid foreign matter separating apparatus 1 of the present embodiment, the scraping rotary shaft 5 rotates in the direction in which the scraping comb tooth portion 5a is separated upward from the latching comb tooth portion 6a by the foreign matter mixing reverse rotation program 105. Therefore, when the solid foreign matter 2 is hooked on the hooking comb teeth 6a, the foreign matter discharging rotary shaft 6 can be rotated with the upper part of the solid foreign matter 2 being opened, and the foreign matter discharging drive can be performed. The driving load of the motor 8 can be reduced.
[0048]
Further, according to the solid foreign matter separation device 1 of the present embodiment, when the current value of the scraping drive motor 7 exceeds the set overload current value I, it is determined that the solid foreign matter 2 has entered. Here, if the solid foreign matter 2 is mixed, the current value of the scraping drive motor 7 increases without fail, so that the mixing of the solid foreign matter 2 can be accurately determined.
[0049]
In addition, according to the solid foreign matter separation device 1 of the present embodiment, when the rotation of the rotary shaft 5 for scraping is prevented by the set overload duration time T by the solid foreign matter 2 hooked on the hooking comb teeth 6a, It is determined that the solid foreign matter 2 has entered the garbage 3, and when the scraping drive motor 7 is activated, the garbage 3 is temporarily clogged in the hooking comb teeth 6a, etc. Is not determined to be mixed, the possibility of erroneous determination in the mixing of the solid foreign matter 2 is reduced, and the mixing of the solid foreign matter 2 can also be accurately determined.
[0050]
In addition, according to the solid foreign matter separating apparatus 1 of the present embodiment, the engaging comb teeth 6a of the foreign matter discharging rotary shaft 6 are arranged side by side in the circumferential direction at approximately 90 ° intervals, and each time the solid foreign matter 2 is discharged. Since the rotating shaft 6 for discharging foreign matter is reversed by about 90 °, after the discharging of the solid foreign matter 2 hooked on one hooking comb tooth portion 6a is completed, as shown in FIG. The hanging comb teeth 6a adjacent to the stopping comb teeth 6a move to positions where the solid foreign matter 2 can be hooked. Therefore, it is not necessary to repeat, for example, the normal rotation and the reverse rotation of the foreign matter discharge rotary shaft 6 during the foreign matter discharge operation, and the solid foreign matter 2 can be discharged only by controlling the reverse rotation of the foreign matter discharge rotary shaft 6 by approximately 90 °. This is extremely advantageous.
[0051]
In the above-described embodiment, the case where the object to be treated is garbage 3 is shown. For example, the object to be treated is relatively fragile resin dust, and metal dust as solid foreign matter is separated from the resin dust. May be used. That is, as long as the solid foreign matter is separated from the fragile processing object, the processing object and the solid foreign matter may be of any type.
[0052]
Further, in the above-described embodiment, the drive unit using the electric motor is shown as the drive unit of the rotary shaft 5 for scraping and the rotary shaft 6 for discharging foreign matter. However, a unit using a hydraulic motor or the like may be used. Of course.
[0053]
【The invention's effect】
According to the solid foreign matter separation device of the present invention, a substantially parallel foreign matter discharge rotation shaft and a scraping rotation shaft are arranged in the case body, and the engaging comb teeth and the scraping comb teeth are alternately arranged on each rotation shaft. The rotation of the rotary shaft for scraping causes the brittle processing target to pass through the gap between the comb teeth of the hooking comb tooth portion and to be discharged from the target outlet of the case body, and to be scraped by the solid foreign matter. When the rotation of the rotating shaft for rotation is stopped, the solid foreign matter hung on the hooking comb tooth by the rotation of the rotating shaft for discharging foreign matter moves to the side of the case body and is discharged from the foreign matter discharge port. Therefore, the processing object mixed with the solid foreign matter can be separated into the solid foreign matter and the processing object. That is, even if the garbage is insufficiently separated, garbage or the like from which solid foreign matter such as a glass bottle has been separated can be obtained, which is extremely convenient when the garbage and the like are reused.
[Brief description of the drawings]
FIG. 1 is a top cross-sectional view of a solid foreign matter separating apparatus according to an embodiment of the present invention.
FIG. 2 is a front sectional view of the solid foreign matter separating apparatus.
FIG. 3 is an explanatory view showing an operation of discharging garbage, and FIG. 3 (a) is a diagram showing a state in which garbage is scraped by a scraping comb tooth portion toward a hooking comb tooth portion; (B) is a diagram showing a state in which garbage is pinched by a scraping comb tooth portion and a latching comb tooth portion, and (c) is a diagram showing a scraping comb tooth portion and a latching comb tooth portion. FIG. 7 is a view showing a state in which the garbage crushed by the garbage passes through the comb teeth of the hooking comb tooth portion, falls in the case body, and is discharged from the garbage discharge port.
FIG. 4 is an explanatory view showing an operation of discharging a solid foreign object, in which (a) is a diagram showing a state in which the solid foreign object is pinched by a scraping comb tooth portion and a latching comb tooth portion; (B) is a view showing a state in which the rotary shaft for scraping is rotated so that the comb tooth portion is separated from the solid foreign matter, and (c) is a state in which the solid foreign matter is hung on the hooking comb tooth portion. It is a figure showing the state where the rotation axis for foreign material discharge rotated, and (d) is a figure showing the state where solid foreign matter is discharged from the foreign matter discharge port.
FIG. 5 is a schematic block diagram of a solid foreign matter device.
FIG. 6 is a timing chart showing a change in a current value of a scraping drive motor.
[Explanation of symbols]
1 Solid foreign matter separation device
2 solid foreign matter
3 garbage
4 Case body
4a Reception opening
4b Garbage discharge outlet
4c Foreign matter discharge port
5 Rotating shaft for scraping
5a Raised comb teeth
5b raking member
6 Rotary shaft for foreign matter discharge
6a Hanging comb teeth
6b Hanging member
6c Rotary shaft braking unit
7 Scraping drive motor
8 Foreign matter discharge drive motor
9 Encoder
10 Encoder
100 Rotation control unit
101 arithmetic unit
102 storage unit
103 Garbage discharge control program
104 Foreign matter mixing judgment program
105 Foreign matter entry reversal program
106 Foreign matter discharge control program
I Set overload current value
T Set overload duration

Claims (5)

A solid foreign matter separation device that separates solid foreign matter mixed in a fragile processing object from the processing object,
A case body in which a receiving opening for receiving the processing object mixed with the solid foreign matter is formed at an upper portion,
A retaining comb provided on a rotating shaft for discharging foreign matter disposed substantially horizontally in the case body and extending in a radial direction of the rotating shaft for discharging foreign matter; A locking member for locking the processing object mixed with the solid foreign matter received from, and a rotating shaft for scraping arranged in the case body in a horizontal direction with the rotating shaft for foreign matter discharge, A raking member having a raking comb tooth portion that extends in the radial direction of the raking rotary shaft and is alternated with the latching comb tooth portion of the latching member;
A foreign matter discharge drive unit that drives the foreign matter discharging rotary shaft,
A rotating shaft braking unit for braking the rotating shaft for foreign matter discharge,
A scraping drive unit that drives the rotating shaft for scraping,
The latching comb tooth portion is formed at a lower portion of the case body, and the scraping rotary shaft rotates, and the latching comb tooth portion enters the latching comb tooth portion from above and withdraws from below. A processed material discharge port from which the processed object that has passed through is discharged,
A foreign object discharge port formed on a side portion of the case body, wherein the solid foreign object is rotated in a direction in which the solid foreign object moves upward together with the engaging comb teeth portion, and the solid foreign object is discharged. , A solid foreign matter separating apparatus comprising: A rotation control unit connected to the foreign matter discharge drive unit and the scraping drive unit,
A load detection unit that detects a driving load of the scraping drive unit and is connected to the rotation control unit,
The rotation control unit,
Controlling the foreign matter discharge drive unit so as to stop the foreign matter discharge rotary shaft at a position where the object to be processed mixed with the solid foreign matter is hung at the hooking comb tooth part; An object discharge control means for controlling the scraping drive unit to rotate the scraping rotation shaft in a direction in which the tooth portion enters the engaging comb tooth portion from above and pulls out from below,
Based on the load detected by the load detecting means, a foreign matter mixing determining means for determining mixing of the solid foreign matter in the processing target,
After the foreign matter mixing determining means determines that the solid foreign matter has mixed into the processing target, the foreign matter discharge rotation shaft rotates in a direction in which the solid foreign matter moves upward together with the hanging comb teeth portion. 2. The solid foreign matter separating apparatus according to claim 1, further comprising foreign matter discharge control means for controlling the foreign matter discharge drive unit and the rotary shaft braking unit. The rotation control unit is configured such that, when the foreign matter mixing determination unit determines that the solid foreign matter has mixed into the processing target, the scraping comb tooth unit is separated upward from the hanging comb tooth unit. Having a rotating shaft reverse rotation control means for controlling the sweep driving unit to rotate the sweep rotating shaft,
The solid foreign matter according to claim 2, wherein the foreign matter discharge control means controls the foreign matter discharge drive unit after the sweeping rotation shaft is rotated by the scraping rotation axis reverse rotation control means. Sorting device. The scraping drive unit has an electric motor,
The load detection unit detects a current value of the electric motor as a drive load of the scraping drive unit,
When the current value of the electric motor detected by the load detecting means exceeds a preset overload current value, the foreign matter mixing determining means determines that the solid foreign matter has mixed into the processing target. The solid foreign matter separation device according to claim 2 or 3, wherein: When the current value of the electric motor detected by the load detection means exceeds the set overload current value and a predetermined set overload duration time elapses, the foreign matter inclusion determination means performs the processing. The solid foreign matter separation device according to claim 4, wherein it is determined that the solid foreign matter has entered the target object.

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