JP6209425B2 - Contaminant separator - Google Patents

Description

  The present invention relates to a contaminant separating apparatus for separating contaminants from a mixture in which small contaminants are mixed.

  As a contaminant separating apparatus for separating contaminants from a mixture in which small-sized contaminants are mixed, those described in Patent Documents 1 and 2 are known.

  In Patent Document 1, a screen portion of a hollow cylindrical body that is provided with a net body on the outer periphery and is rotatably disposed around a cylindrical axis, and a strip-shaped cutting blade disposed on the inner periphery of the cylinder are concentric with the screen portion. In a tea leaf pulverization apparatus comprising a cutting blade section to be rotated and an anti-scattering cover provided on the outside of the screen section, a screen section comprising one or more rotatable cylindrical bodies is provided upstream of the apparatus. A series of screens are used to screen out the fine tea leaves in advance by the screen body, and at the same time, only the tea leaves of a certain size or larger are guided to the most downstream crusher and crushed. On the most upstream side, there is described a tea leaf pulverization apparatus characterized in that a raw material supply device comprising a hopper, a vibration feeder and a chute is arranged. In this pulverization apparatus, fine tea leaves are previously separated as impurities by the screen body.

  In Patent Document 2, a drum that can be driven and rotated around a horizontal axis is supported on a machine frame, and an inlet / outlet for a fibrous product is formed at least on one side in the rotational axis direction of the drum. Is a fibrous product rotation removing device provided with a plurality of agitation protrusions for lifting the fibrous product in accordance with the drive rotation of the drum. A side plate provided at the both ends in the axial direction and provided with the entrance and exit, a torus arranged side by side at appropriate intervals in the axial direction between the side plates at the both ends, and each torus It is formed in a bowl shape by a connecting member that spans between the side plates so as to integrally connect the both side plates, and (b) the machine frame portion at a position facing the bottom of the drum includes the ring Through the distance between adjacent bodies, The inner space brush in a state where Kesaki portion enters contaminants rotation apparatus for removing fibrous product, characterized in that provided is described. In this rotational rotation removing device, the specific gravity selection action when the fibrous product lifted to the top of the drum by the stirring protrusion falls with the driving rotation of the drum, and this falls to the bottom of the drum. It is said that the contaminants that have penetrated deeply into the fibrous product can be reliably removed by the synergistic effect of the impact separating action and the forced brushing action by the brush on the dropped fibrous product.

JP-A-9-122523 Japanese Utility Model Publication No. 2-26955

  By the way, the foreign substance separation mechanism (that is, the mesh body of the rotating screen part) in the pulverization processing apparatus described in Patent Document 1 is suitable for use in separating fine tea dust from a powdery mixture such as tea leaves. However, when separating contaminants from a mixture of larger objects, or when the contaminants are entangled or attached to a pure substrate (a mixture from which the impurities are removed) (for example, green caterpillars) When separating green caterpillars and garbage from leafy vegetables (pure bases) that have adhered and mixed with dust and dust, and fibrous products (pure bases) mixed with lint, pills, and hair (contaminations) ), When separating lint, pills, hair, etc.), there is a problem that the separation effect is not sufficient. In addition, in the case of a mixture having low fluidity, it tends to stay in the screen portion, and therefore, when the amount of the mixture staying in the screen portion increases, there is a problem that the effect of separating impurities decreases.

  On the other hand, in the foreign matter rotation removing device of Patent Document 2, the mixture is stirred in the drum by the stirring protrusion, and further, the foreign matter is swept away by the brush, so that the foreign matter is separated from the mixture of large objects. It is considered that a sufficient separation effect can be expected even when the impurities are entangled or adhered to the pure base material to be separated. However, the contaminant rotation removal apparatus of Patent Document 2 is an apparatus premised on a batch process in which a certain amount of the mixture is put into the drum and the drum is rotated for a certain period of time to separate the contaminants. There is no feed mechanism for the mixture. Therefore, it cannot be applied as it is to the line processing in which the mixture flows one after another. In addition, the stirring protrusion is used to lift and drop the mixture to the vicinity of the top of the drum, but in the case of a soft mixture, the drum is rotated against the drum inner wall by the rotation of the drum, and the mixture is dumped. It may be curled up or tangled. In that case, a sufficient separation effect may not be obtained. It is also conceivable that the pure substrate is damaged by rubbing with a brush.

  Therefore, the object of the present invention is sufficient when separating impurities from a mixture of large objects, when the impurities are entangled with or adhered to the pure substrate to be separated, or in the case of a soft mixture. It is an object of the present invention to provide a contaminant separating apparatus that can obtain a separation effect and can be applied to a line process in which a mixture flows one after another.

  The first configuration of the foreign matter separating apparatus according to the present invention is formed in a cylindrical shape provided with a sieve mesh over the entire side peripheral surface, and a rotating cylinder that is rotatably installed with the central axis as a lateral direction, A driving device that rotationally drives the rotating cylinder in one direction; and one or more loosening conveying combs that are provided on the inner peripheral surface of the rotating cylinder, the rotating cylinder being an inlet for charging the mixture A side end portion and an outlet side end portion on the opposite side are open, and the unwinding conveying comb includes a plurality of comb teeth provided in tandem in a central axis direction of the rotating cylinder, An envelope surface composed of comb-shaped shafts is inclined in the direction opposite to the rotation direction of the rotating cylinder from the inlet-side end of the rotating cylinder toward the outlet-side end. Features.

  According to this configuration, the mixture charged into the rotating cylinder from the inlet side end is disengaged upward from the bottom by the loosening and conveying comb along with the rotation of the rotating cylinder. Be lifted. At this time, an object having a size smaller than the comb tooth interval mixed in the mixture falls between the comb teeth, and further, an object (contaminant) of a size that can pass through the sieve mesh on the cylinder side peripheral surface, It passes through the side peripheral surface of the rotating cylinder and falls downward. Thereby, impurities can be effectively separated from the mixture. Further, the loosening conveying comb is scraped because the enveloping surface of each comb tooth is inclined from the inlet end of the rotating cylinder toward the outlet end, in the direction opposite to the rotating direction of the rotating cylinder. In the raised mixture, a force is applied to the downward slope of the envelope surface due to gravity. Moreover, since the loosening conveyance comb is comb-shaped, the mixture thus scraped moves so as to roll without sliding on the envelope surface. As a result, the mixture slowly moves from the inlet side end portion toward the outlet side end portion, and the entanglement between the objects included in the mixture is loosened, so that a large size object and a small size object (contamination) Sieving is performed more effectively.

  Here, in the loosening conveying comb, it is preferable that the interval between the comb teeth is approximately the same as the diameter of the mesh on the peripheral surface of the rotating cylinder. Specifically, from the viewpoint of optimally exhibiting both the sieving effect of the mixture and the unraveling effect of the mixture, the interval between the comb teeth (simply the gap between the comb and the comb) is 0.5 to It is preferable to set it to about 1 time.

  Further, in the present invention, the unwinding conveying comb can be configured so as to incline the entire envelope surface constituted by the shafts of the respective comb teeth. However, the envelope surface serves as a twisted surface, and the proximal side of the envelope surface. The side of the envelope is parallel to the central axis of the rotating cylinder, the side on the tip side of the envelope surface is directed from the inlet end of the rotating cylinder toward the outlet end, and in the direction opposite to the rotational direction of the rotating cylinder You may comprise so that it may incline. In any case, as the rotating cylinder rotates, the action of the mixture moving from the inlet side end toward the outlet side end is obtained. In the latter case, since the base end side of the envelope surface is parallel to the central axis of the rotating cylinder, it is easy to fix the unwinding conveying comb to the rotating cylinder.

  According to a second configuration of the foreign matter separating apparatus according to the present invention, in the first configuration, the rotary cylinder is disposed on an inner peripheral surface of the rotary cylinder on the inlet side end with respect to the unwinding comb. One or a plurality of screwing screw plates are provided in the direction of the central axis of the body, and the plate surface of the screwing screw plate extends from the inlet side end of the rotating cylinder to the outlet side end. It is characterized by being inclined toward the direction opposite to the rotation direction of the rotating cylinder.

  According to this structure, the mixture thrown into the inside of the rotating cylinder from the end portion on the inlet side of the rotating cylinder falls to the inner bottom of the rotating cylinder, and is then scraped up by the take-in screw plate. At this time, since the plate surface of the screw screw plate is inclined in the direction opposite to the rotation direction of the rotating cylinder from the inlet side end of the rotating cylinder toward the outlet side end, gravity Due to this, a force directed downward of the inclination of the plate surface works. As a result, the mixture rapidly moves from the inlet side end toward the unwinding and conveying comb, and therefore, the mixture thrown into the vicinity of the inlet side end of the rotating cylinder is prevented from being excessively accumulated.

  According to a third configuration of the contaminant separating apparatus according to the present invention, in the first or second configuration, the inner peripheral surface of the rotating cylinder on the outlet side end portion side with respect to the unwinding conveying comb, One or a plurality of scraping plates provided in parallel to the central axis of the rotating cylinder, and a discharge installed from the portion where the scraping plate of the rotating cylinder is disposed to the outside of the outlet side end. And a conveyor.

  According to this configuration, the separated mixture (hereinafter referred to as “separate”) conveyed to the outlet side end portion of the rotating cylinder by the loosening conveying comb is placed in the middle of the rotating cylinder by the scraping plate. From the top of the rotating cylinder and falls by gravity before reaching the top of the rotating cylinder. At this time, the separated material falls on the discharge conveyor and is discharged as it is to the outside at the outlet side end of the rotating cylinder. Thereby, a separated substance can be smoothly discharged | emitted to the exterior of a rotation cylinder. Further, since the separated product is stirred and dispersed by the scraping plate, the separated product is prevented from being discharged as an excessive lump, and the separated product can be discharged in a substantially constant amount. It is possible to smoothly perform a flow operation (for example, an operation such as processing or packing of the separated object) in a subsequent process of the separation process by the contaminant separating apparatus.

A fourth configuration of the foreign matter separating device according to the present invention includes a plurality of the loosening conveyance combs in the third configuration, and one or more of the scavenging screw plates and the scraping plates, respectively.
When the direction from the inlet side to the outlet side of the rotating cylinder is parallel to the central axis of the rotating cylinder and the x-axis direction,
At least one of the unwinding conveying combs is disposed at a position where the position in the x-axis direction of the outlet side end portion thereof is the same as the position in the x-axis direction of the inlet side end portion of the scraping plate. With
At least one of the unwinding conveying combs is disposed at a position where the position in the x-axis direction of the inlet side end is the same as the position in the x-axis direction of the outlet side end of the take-up screw plate. It is characterized by.

  According to this configuration, the mixture moving between the take-in screw plate and the raising plate is picked up and conveyed by any of the loosening and conveying combs by the rotation of the rotating cylinder at any position in the x-axis direction. become. Therefore, the movement of the mixture does not stagnate between the take-in screw plate and the raising plate. Therefore, the moving and transporting of the mixture becomes smooth, and a larger amount of the mixture can be separated in a short time.

In a fifth configuration of the contaminant separating apparatus according to the present invention, in the third configuration, the discharge conveyor is
An endless belt provided rotatably,
A guide plate disposed on the left and right of the endless belt, the lower end side being lower than the upper surface position of the endless belt and the upper end side being higher than the upper surface position of the endless belt;
When the rotation direction of the upper part when the rotary cylinder is rotationally driven by the driving device is defined as a protruding direction, the upper side from the upper side of the guide plate located on the lower side of the protruding direction among the left and right guide plates And a receiving plate that is inclined toward the inner side of the endless belt.

  According to this configuration, the receiving plate protrudes from the lower side of the guide plate on the lower side with respect to the squeezing direction, and the amount of separated material that falls over the guide plate is reduced, thereby increasing the flow rate of the mixture. Even in this case, the discharge flow rate can be maintained and the mixture can be separated at a high processing speed.

According to a sixth configuration of the foreign matter separating apparatus according to the present invention, in the configuration according to any one of the first to fifth aspects , the unwinding transport comb includes a horizontal member provided between the comb teeth. A plurality of comb teeth and the horizontal members are formed in a lattice shape as a whole.

If the loosening and conveying comb is formed in a lattice shape , the loosening and conveying comb can be scraped and conveyed even when the size of the individual grains (elements) of the mixture is smaller than in the case of a simple comb shape. .

A seventh configuration of the contaminant separation device according to the present invention includes a chute that is connected to an inlet side end of the rotating cylinder and includes an inclined inner bottom surface that is inclined toward the rotating cylinder.
A hopper disposed above the inclined inner bottom surface of the chute, having a bottom surface formed with an opening at a position directly above the inclined inner bottom surface, and opening upward;
An inclined plate that is inclined downward and extended from an end of the opening of the bottom surface of the hopper on the rotating cylinder side;
One or more air nozzles for injecting air in the direction of the rotating cylinder toward a gap between the lower end of the inclined plate and the inclined inner bottom surface of the chute are provided.

  According to this configuration, the width of the gap between the inclined inner bottom surface of the chute and the lower end of the inclined plate is set to such a width that the mixture to be introduced can pass and the operator's hand does not enter deeply. It is possible to prevent an unexpected accident that a person gets behind the chute and gets caught in the machine. Further, the mixture can be prevented from being clogged in the gap by pushing the mixture from the gap toward the bottom of the inclined inner bottom surface by air injection from the air nozzle.

  According to an eighth configuration of the foreign matter separation device according to the present invention, in the seventh configuration, the air nozzle extends to a gap between the inclined plate and the inclined inner bottom surface of the chute. Features.

  According to this configuration, by extending the air nozzle to the gap between the inclined plate and the inclined inner bottom surface of the chute, it is possible to push the air in close proximity to the mixture charged in the gap, It is possible to more reliably prevent the mixture from being clogged.

A ninth configuration of the contaminant separating apparatus according to the present invention includes one or a plurality of the screwing screw plates in the seventh or eighth configuration,
The height of the upper side of the end portion on the inlet side of the rotating cylinder when the screwing screw plate is positioned at the lowest position of the rotating cylinder is higher than the height of the lower end side of the inclined inner bottom surface of the chute It is formed so that it may become high.

  According to this configuration, the mixture that has slipped down to the chute discharge port (the lower end side of the inclined inner bottom surface) is forcibly pushed into the rotating cylinder by the screwing screw plate. The mixture is prevented from stagnation.

As described above, according to the present invention, the envelope surface of each comb tooth is inclined in the direction opposite to the rotation direction of the rotating cylinder from the inlet side end of the rotating cylinder toward the outlet side end. By providing the loosening conveying comb on the inner surface of the rotating cylinder, the objects contained in the mixture can be entangled to effectively screen large objects and small objects, and the mixture can be removed from the rotating cylinder. By sequentially moving from the inlet side end portion to the outlet side end portion of the body, the mixture is not accumulated in the rotating cylinder, and the effect of loosening and separating the mixture can be exhibited to the maximum. Therefore, when separating impurities from a mixture of large objects, if the impurities are entangled or adhered to the pure substrate to be separated, a sufficient separation effect can be obtained in any case of a soft mixture. It can also be applied to line processing in which the mixture flows one after another.

It is an external appearance perspective view of the foreign material separator which concerns on Example 1 of this invention. It is the perspective view which looked at the inside of the rotation cylinder 3 of the foreign material separator 1 of FIG. 1 from the exit side edge part side. It is a perspective view showing the state which removed the screen 7 of the rotating cylinder 3 of FIG. It is the figure which looked at the hopper 9 of FIG. 1 from upper direction. It is a figure showing the loosening conveyance comb 27 attached to the rotation cylinder 3 of FIG. It is a figure showing a mode that the mixture thrown in by the screwing screw board 26 is conveyed in the exit side direction from the entrance of the rotation cylinder 3. FIG. It is a figure explaining the constant flow carrying out operation | movement of the separated material in a carrying out process. It is the photograph which showed a mode that the separation test of the foreign material from a basil was being performed using the foreign material separation apparatus 1 of Example 1. FIG. It is a perspective view showing the state except the screen 7 of the rotary cylinder 3 of the foreign material separator which concerns on Example 2 of this invention. It is a perspective view showing the state except the screen 7 of the rotation cylinder 3 of the foreign material separator which concerns on Example 3 of this invention. It is a side view of the rotation cylinder 3 (except for the screen 7) of FIG. It is a side view showing the state except the screen 7 of the rotary cylinder 3 of the foreign material separator which concerns on Example 4 of this invention. It is a perspective view showing the state which remove | excluded the screen 7 of the rotary cylinder 3 of the foreign material separator which concerns on Example 5 of this invention. (A) The perspective view showing the state except the screen 7 of the rotary cylinder 3 of the foreign material separator which concerns on Example 6 of this invention, (b) The enlarged view of the unwinding conveyance comb 27. FIG. It is a perspective view around the hopper 9 and chute 10 of the foreign material separator 1 which concerns on Example 7 of this invention. (A) Permeation | transmission perspective view of the hopper 9 and the chute | shoot 10 of FIG. 15 (b) It is a permeation | transmission side view of the hopper 9 and the chute | shoot 10 of FIG. (A) The side view of the foreign material separator which concerns on Example 8, and (b) The front view of the part of the conveyor for discharge | emission. It is a principal part perspective view of the part of the conveyor for discharge | emission of the contaminant separation apparatus which concerns on Example 8. FIG. It is a perspective view of the principal part of the foreign material separator which concerns on Example 9 of this invention. It is a perspective view of the principal part of the foreign material separator which concerns on Example 10 of this invention. (A) Side view of main part around the screwing screw plate 26 in FIG. 20, (b) Front view taken along line AA in (a), (c) Side view of one screwing screw plate 26, (d) FIG. 3 is a front view of one scrambling screw plate 26. It is a side perspective view of the foreign material separator which concerns on Example 11 of this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is an external perspective view of a contaminant separating apparatus according to Embodiment 1 of the present invention. In FIG. 1, a foreign matter separating apparatus 1 includes a machine casing 2 formed of a steel material, and a rotating cylinder 3 is rotatably supported inside the machine casing 2 with a central axis as a lateral direction. The rotating cylinder 3 is formed in a cylindrical shape, and is composed of a frame made of steel and a screen 7 made of a steel net stretched over the entire side peripheral surface. The rotating cylinder 3 has an inlet side end portion into which the mixture is charged and an outlet side end portion on the opposite side.

  The frame includes left and right annular end frames 4a and 4b, two annular intermediate frames 5a and 5b disposed between the end frames 4a and 4b, and the end frames 4a and 4b and an intermediate frame. It is comprised by the vertical frame 6 which consists of six flat steel which connects the circumference | surroundings of frame 5a, 5b. The end frame 4a is an inlet side end, and the end frame 4b is an outlet side end. The left and right end frames 4a and 4b and the intermediate frames 5a and 5b are arranged coaxially. The left and right end frames 4a and 4b are made of angle steel having the same diameter and processed into an annular shape, and are arranged so that the respective concave surfaces face each other. The intermediate frames 5a and 5b are made of channel steel having the same diameter as the end frames 4a and 4b and processed into an annular shape so that the grooves are on the outside. Further, the vertical frames 6 are arranged at equal intervals on the circumference. The end frames 4 a and 4 b are welded to the end portions of the vertical frames 6, and the intermediate frames 5 a and 5 b are bolted to the vertical frames 6.

  On the machine casing 2 at the upper part of the rotary cylinder 3, front and rear shielding doors 8 and 8 are pivotally supported. The shielding doors 8 and 8 are made of a member in which a transparent resin plate is stretched on the outer frame of a steel material so that the inner rotating cylinder 3 can be observed from the outside of the door. By opening each shielding door 8, the operator can access the rotating cylinder 3 from the outside.

  A hopper 9 and a chute 10 for introducing the mixture into the rotating cylinder 3 are disposed in the machine casing 2 on the side of the inlet side of the rotating cylinder 3. The chute 10 includes an inclined inner bottom surface that is inclined toward the inside of the rotating cylinder 3. The hopper 9 is formed in a box shape opened upward, and an opening is formed at a position directly above the inclined inner bottom surface of the chute 10 on the bottom surface thereof. A rotating cylinder drive motor 11 and a gear mechanism 12 for driving the rotating cylinder 3 are disposed below the chute 10. The drive shaft 13 that is the output shaft of the gear mechanism 12 is disposed at a position that is coaxial with the central axis of the rotating cylinder 3 (see FIG. 2). The drive shaft 13 is inserted into the rotary cylinder 3 from the inlet side end of the rotary cylinder 3 to the center position of the intermediate frame 5a, and three shafts 13a are radially formed at the tip of the drive shaft 13. The tip of each shaft 13a is bolted to the inner peripheral side of the intermediate frame 5a. Thereby, the power of the rotary cylinder drive motor 11 is transmitted to the rotary cylinder 3 via the gear mechanism 12, the drive shaft 13, and the shaft 13a, and the rotary cylinder 3 is driven to rotate by the rotary cylinder drive motor 11. .

  In the machine casing 2 below the rotary cylinder 3, storage trays 14a, 14b, and 14c for storing foreign substances separated from the mixture in the rotary cylinder 3 are disposed.

On the side of the rotary cylinder 3 on the outlet side, a discharge conveyor 15 is arranged separately from the machine frame. The discharge conveyor 15 is attached to a belt conveyor section 16 having an endless belt 16a that is rotationally driven by a conveyor drive motor (not shown), and a lower portion of the belt conveyor section 16, and the belt conveyor section 16 is fixed at a certain height. The leg portion 17 is supported at an angle, and the caster portion 18 is attached to the lower end of the leg portion 17. The leg part 17 can adjust the height and angle of the belt conveyor part 16.

  A switch 19 of the rotary cylinder drive motor 11 is installed in front of the rotary cylinder drive motor 11 on the front surface of the machine casing 2, and a discharge conveyor 15 is disposed obliquely on the outlet side end of the rotary cylinder 3. A conveyor control box 20 is installed for controlling on / off and rotation speed.

  In the present embodiment, an example is shown in which a metal net in which metal fine wires are combined in a lattice shape is used as the screen 7, but the material of the screen 7 passes through impurities and does not pass through the pure substrate. What is necessary is just a thing provided with many opening, for example, the thin plate-shaped member which carried out the hole process to the SUS board may be sufficient.

  FIG. 2 is a perspective view of the inside of the rotating cylinder 3 of the contaminant separating apparatus 1 of FIG. 1 as viewed from the outlet side end portion side. FIG. 3 is a perspective view illustrating a state where the screen 7 of the rotating cylinder 3 of FIG. 1 is removed. 2 and 3, corresponding parts in FIG. 1 are denoted by the same reference numerals.

  As shown in FIG. 2, the rotating cylinder 3 is rotatably supported from the bottom by two supporting rollers 25 and 25 attached to the machine frame 2 in the intermediate frames 5 a and 5 b, respectively.

  On the inner circumference between the end frame 4a and the intermediate frame 5a of the rotating cylinder 3, three scrambling screw plates 26 are attached. Each of the screwing screw plates 26 is of the same type, and is arranged so as to be three times symmetrical with the central axis of the rotating cylinder 3 as the symmetry axis. Each of the screw screw plates 26 is formed by twisting a rectangular steel plate, and the surface of the plate is rotated from the inlet side end portion of the rotating cylinder 3 toward the outlet side end portion. It is provided so that it may incline toward the opposite direction. In the example of FIG. 3, the rotation direction of the rotating cylinder 3 is clockwise when viewed from the inlet side of the rotating cylinder 3. The inlet side end of each screwing screw plate 26 is bolted to one of the vertical frames 6, and the opposite end (outlet side end) is on the counterclockwise side when viewed from the inlet side of the rotating cylinder 3. Bolts are fixed to adjacent vertical frames 6. The height of each screw screw plate 26 (referred to as a length in the radial direction) is about ¼ to ½ of the radius of the rotating cylinder 3.

  Three loosening conveyance combs 27 are attached to the inner periphery between the intermediate frame 5a and the intermediate frame 5b of the rotary cylinder 3. Each loosening conveyance comb 27 is of the same type, and is arranged so as to be three times symmetrical with the central axis of the rotating cylinder 3 as the symmetry axis. Each loosening conveyance comb 27 is provided with a comb tooth base 27a and nine comb teeth 27b made of straight bar-shaped angle steel. Each comb tooth 27b has a round bar shape, and its base end is welded to one inner surface of a concave comb tooth base 27a at equal intervals. Each comb tooth 27b is bent in the vicinity of the base end portion, and the envelope surface constituted by the central axis on the distal end side from the folding point of each comb tooth 27b extends from the inlet side end portion of the rotating cylinder 3 to the outlet side end. It inclines toward the direction opposite to the rotation direction of the rotating cylinder 3 toward the part. In FIG. 3, since the rotation direction is clockwise, the envelope surface is inclined toward the counterclockwise direction.

  Here, as shown in FIG. 3B, the “envelope surface constituted by the central axis” means two sides of the side connecting the tip of the central axis of each comb tooth 27b and the side connecting the break points. And the surface S having the periphery of the central axis of the comb teeth 27b at both ends. That is, it refers to a plane or curved surface obtained by smoothly interpolating between the comb teeth 27b.

  The comb tooth bases 27 a of the three loosening conveying combs 27 are respectively bolted to the three vertical frames 6. The frame 6 to which each loosening conveyance comb 27 is fixed is the frame 6 to which the exit side end of each of the screwing screw plates 26 is fixed. Further, the lengths and diameters of the comb teeth 27 b of each loosening conveying comb 27 are the same, and the length is about ¼ to ½ of the radius of the rotating cylinder 3.

  Three scraping plates 28 are attached to the inner periphery between the intermediate frame 5b and the end frame 4b of the rotating cylinder 3. Each of the scraping plates 28 is of the same type, and is arranged so as to be three times symmetrical with the central axis of the rotating cylinder 3 as the symmetry axis. Each scraping plate 28 is made of straight rod-shaped angle steel, and one of two flat plate portions bent at right angles is bolted to the vertical frame 6. The frame 6 to which each scraping plate 28 is fixed is a frame 6 different from the frame 6 to which each unraveling conveyance comb 27 is fixed. Further, the height (referred to as the length in the radial direction) of each scraping plate 28 is preferably as long as possible without interfering with the discharge conveyor 15, but in actual design, it is 1 / of the radius of the rotating cylinder 3. It is about 8 to 1/2.

  FIG. 4 is a view of the hopper 9 of FIG. 1 as viewed from above. An inner bottom surface of the hopper 9 has an opening 9a, and a chute 10 is disposed below the opening 9a. A safety bar 30 is installed above the opening 9 a inside the hopper 9. The safety bar 30 is provided to prevent an operator's hand from being caught during work, and can be removed during maintenance. At the entrance of the chute 10, a plurality of air nozzles 31 are arranged in the feed direction. Compressed air is jetted from the air nozzle, and an input that falls from the hopper 9 to the entrance of the chute 10 can be smoothly sent out into the rotary cylinder 3.

  FIG. 5 is a view showing the unwinding transport comb 27 attached to the rotary cylinder 3 of FIG. 5A is a plan view, FIG. 5B is a front view, and FIG. 5C is a right side view. The base of each comb tooth 27b is welded to the inner surface of the comb tooth base 27a, and is bent with the position protruding from the comb tooth base 27a as a break point. The bending angle is different for each comb tooth 27b, and as a whole, the envelope surface constituted by the central shaft of each comb tooth 27b is directed from the inlet side end portion to the outlet side end portion of the rotary cylinder 3 so that The folding angle is adjusted so as to form a smooth curved surface inclined in the direction opposite to the rotation direction of the body 3.

  The operation of the contaminant separating apparatus according to this embodiment configured as described above will be described below.

(1) Inputting process First, the rotating cylinder drive motor 11 is activated to rotate the rotating cylinder 3, and the compressed air is supplied to the air nozzle 31 for injection. In this state, the mixture to be processed is put into the hopper 9. The charged mixture is fed from the chute 10 to the inlet side inside the rotating cylinder 3 and falls to the inner bottom of the rotating cylinder 3.

(2) Scratch Separation Step FIG. 6 is a diagram showing a state in which the mixture charged by the scrambling screw plate 26 is conveyed from the entrance to the exit side of the rotating cylinder 3. In FIG. 6, the screen 7 and the intermediate frame 5 a are omitted for ease of viewing, and portions other than the take-in screw plate 26 are illustrated by dotted lines. In FIG. 6, the rotating cylinder 3 rotates in the direction of arrow A. 6A changes from FIG. 6A to FIG. 6F with time. The charged mixture S is represented by ◯. Immediately after the charging, the mixture S is at the bottom of the rotating cylinder 3 as shown in FIG. At this time, with the rotation of the rotating cylinder, the mixture S rolls on the screen 7, whereby a part of the impurities in the mixture S falls through the mesh of the screen 7 to the storage tray 14 a. When the rotary cylinder 3 further rotates and the mixture S hits the pick-up screw plate 26, the mixture S is pushed upward obliquely by the pick-up screw plate 26. At this time, the plate surface of the screwing screw plate 26 is inclined in the direction opposite to the rotation direction A of the rotating cylinder 3 from the inlet side end of the rotating cylinder 3 toward the outlet side end. Therefore, force acts on the mixture S in the direction of the arrow F in FIG. 6A, and the mixture S starts to move from the inlet side toward the outlet side.

  Since the centrifugal force due to the rotation of the rotating cylinder 3, the drag force due to the pressing of the screwing screw plate 26, and the gravity act on the mixture S, the mixture S is 6 Move as shown in (a) to (d). If the rotational speed of the rotating cylinder 3 is high, the centrifugal force increases, so that the mixture S moves toward the outlet side while sliding along the base portion of the take-in screw plate 26. On the other hand, when the rotational speed of the rotating cylinder 3 is slow, the centrifugal force is small, and the mixture S moves toward the outlet side while moving in the distal direction from the base of the screwing screw plate 26 by gravity. Therefore, the mixture S may reach the tip of the screwing screw plate 26 before reaching the outlet side end of the screwing screw plate 26 and fall again to the bottom of the rotating cylinder 3. A part of the foreign matter falls through the mesh of the screen 7 and falls into the storage tray 14a.

  When the mixture S reaches the outlet side end of the screwing screw plate 26, it falls to the bottom near the center of the rotating cylinder 3, and moves to the unwinding separation step by the unwinding conveying comb 27.

  As described above, the mixture S introduced into the inlet side of the rotating cylinder 3 is quickly conveyed toward the outlet side by separating the foreign substances by the screwing screw plate 26, so that the inside of the rotating cylinder 3 is The mixture S thrown in the vicinity of the inlet side is prevented from staying and accumulating, and the separation efficiency of impurities is improved.

(3) Unraveling separation process The mixture S sent to the central part of the rotating cylinder 3 is now scraped and conveyed by the unraveling conveying comb 27 in the same manner as the stir separation process. As with the screwing screw plate 26, the unwinding conveying comb 27 has an envelope surface constituted by the shafts of the respective comb teeth 27b from the inlet side end portion to the outlet side end portion of the rotating cylindrical body 3. 3, the mixture S is conveyed in the direction of the outlet of the rotary cylinder 3 according to the same principle as that of the screwing screw plate 26 described in FIG. Move on to the unloading process.

However, since the loosening conveying comb 27 has a gap between the comb teeth 27b, it is loosened and spreads when the mixture S is agglomerated, and the impurities contained in the mixture S are efficiently separated. The For example, when the mixture S is a leafy vegetable to which dust or green caterpillar has adhered and mixed, the leafy vegetable may be folded or overlapped to form a lump. In such a case, the folding and overlapping are loosened and scattered by lifting up with the unwinding and transporting comb 27, and the attached dust and green insects fall from the gaps between the comb teeth 27b to efficiently separate impurities. be able to.

  In the case of the screwing screw plate 26, the mixture S can move so as to slide on the side surface of the screwing screw plate 26 in the outlet direction, but in the case of the loosening conveying comb 27, the mixture S is separated from each comb of the loosening conveying comb 27. It can only move so that the side surface of the tooth 27b rolls in the exit direction. Accordingly, the speed at which the mixture S moves in the outlet direction is slower than that in the squeeze separation process, and the lifting of the mixture S by the loosening conveying comb 27 and the dropping onto the bottom surface of the rotating cylinder 3 are repeated a plurality of times. Separation of contaminants from is sufficient. The separated impurities fall through the screen 7 to the storage tray 14b and are stored.

(4) Unloading process FIG. 7 is a diagram for explaining a constant flow rate unloading operation of the separated product in the unloading process. In the scraping separation process and the loosening separation process, almost all of the contaminants are separated, and therefore, the separated product from which the contaminants are separated from the mixture S is fed into the scraped plate 28 in the rotating cylinder 3. The Although various actual separations are assumed, here, for the purpose of explaining the principle, the separation will be described as a granule.

  The separated matter on the inner bottom surface of the rotating cylinder 3 gathers on the rotation direction side of the scraping plate 28 as shown in FIG. If the amount of accumulated separated material is large and the inclination of the separated material accumulated in the direction of rotation of the scraping plate 28 exceeds the angle of repose (greater than the angle of repose at rest because of the centrifugal force), the excess separated material is It collapses to the inner bottom surface of the rotating cylinder 3.

  As the rotating cylinder 3 rotates, the inclination angle of the separated material accumulated on the rotational direction side of the scraper plate 28 increases, so that the separated material sequentially reaches the inner bottom surface of the rotating cylinder 3 from the angle exceeding the repose angle. It falls (FIGS. 7B to 7D). For this reason, on the rotational direction side of the scraping plate 28, a substantially constant amount of separated matter is always held according to the angle of the scraping plate 28, the rotational speed of the rotating cylinder 3, and the repose angle of the separated matter.

  When the rotary cylinder 3 further rotates and the scraping plate 28 reaches a position above the discharge conveyor 15 as shown in FIGS. 7E and 7F, at that time, the scraping plate 28 is moved to the rotational direction side. All the remaining separation falls on the discharge conveyor 15 and is carried out from the outlet side of the rotating cylinder 3 by the discharge conveyor 15. As a result, the flow rate of the separated material carried out from the discharge conveyor 15 is substantially constant as long as the separated material is continuously supplied. Therefore, the flow work in the post-process such as processing and transporting the separated product after carrying out becomes easy.

  In the carry-out process, the separated matter is agitated inside the rotary cylinder 3, so that again, if there is any foreign matter remaining in the separated matter, it is discharged to the storage tray 14c through the screen 7.

(Test Example 1)
Here, as an example, an example will be described in which impurities are separated from basil mixed with green worms and dust as impurities. FIG. 8 is a photograph showing a state in which a separation test for contaminants from basil is being performed using the contaminant separation apparatus 1 of Example 1.

  In the test, when foreign substances that are supposed to be mixed in basil that is actually harvested are put into basil that is a raw grass and put into the foreign matter separating apparatus 1 of Example 1, what percentage of foreign substances is present. This was performed for the purpose of confirming whether it was separated and removed. 20 kg of basil was used as a raw grass, and impurities such as shown in (Table 1) were evenly added to the raw grass to form a mixture.

  As a result of the test, all impurities other than the nonwoven fabric could be separated and removed by the contaminant separator 1. From this result, it was proved that almost all contaminants mixed in the raw grass can be separated and removed by the contaminant separating apparatus 1.

(Test Example 2)
Next, a test for investigating whether or not such kind of contaminants can be separated by the contaminant separating apparatus 1 of Example 1 using basil actually harvested was conducted. Tests were conducted using basil harvested over multiple days, as the types of contaminants mixed into the basil harvested by day may vary. Table 2 shows the types and number of the separated impurities separated on each implementation date. From the results of (Table 2), it is speculated that the number of insects fluctuates especially from day to day, and this varies depending on the weather and temperature.

  (Table 3) and (Table 4) show the types of separated impurities and their ratio (or number). In this test, the separation rate between basil and impurities was 100% (complete separation). From this result, it was demonstrated that insects adsorbed on leaves such as stink bugs, slugs and snails can be separated with sufficient accuracy, not only insects not adsorbed on leaves such as stink bugs and mantis. . This is considered that the unraveling effect by the unraveling transport comb 27 contributes greatly.

FIG. 9 is a perspective view illustrating a state in which the screen 7 of the rotating cylinder 3 of the contaminant separating apparatus according to the second embodiment of the present invention is removed. FIG. 9A is an overall view, and FIG. 9B is an enlarged view of only the unwinding conveying comb 27 taken out. The foreign matter separating apparatus according to the present embodiment is different from the first embodiment only in the loosening and conveying comb 27, and the other configurations are the same as those in the first embodiment. In the present embodiment, as shown in FIG. 9B, the unwinding transport comb 27 has a flat envelope surface S constituted by the shafts of the respective comb teeth 27b, and each unwinding transport comb 27 is attached to the vertical frame 6. On the other hand, it is fixed to the vertical frame 6 so that the entire envelope surface S is inclined. As in the first embodiment, the inclination direction is the rotational direction of the rotating cylinder 3 from the inlet side end (end frame 4a side) of the rotating cylinder 3 toward the outlet end (end frame 4b side). Inclined in the opposite direction to A. Even if it is such a structure, there can exist the same effect as Example 1. FIG.

  FIG. 10 is a perspective view illustrating a state where the screen 7 of the rotating cylinder 3 of the foreign matter separator according to Embodiment 3 of the present invention is removed. FIG. 11 is a side view of the rotating cylinder 3 (excluding the screen 7) of FIG.

Compared with the first embodiment, in this embodiment, the attachment positions of the three loosening conveying combs 27 of the first embodiment are changed, and the length of the scraping plate 28 is changed. The other parts are the same as in the first embodiment. As shown in FIGS. 10 and 11, in this embodiment, the length of the scraping plate 28 is extended to substantially the entire space between the end frame 4b and the intermediate frame 5b. Further, if the three unraveling transport combs 27 are respectively unraveling transport combs 27_1, 27_2, 27_3, the unraveling transport comb 27_1 has a coordinate value in the central axis direction of the rotating cylinder 3 at the downstream end (hereinafter referred to as “x-axis direction”). Is referred to as “the coordinate value of”) is substantially the same as the coordinate value in the x-axis direction of the upstream end portion of the scraping plate 28. On the other hand, the unraveling transport combs 27 </ b> _ <b> 2 and 27 </ b> _ <b> 3 have the same coordinate value in the x-axis direction at the upstream end portion as the coordinate value in the x-axis direction at the downstream end portion of the take-up screw plate 26 .

  In this way, at least one of the unwinding conveying combs 27_1, 27_2, 27_3, the coordinate in the x-axis direction of the upstream end is substantially the same as the coordinate in the x-axis direction of the downstream end of the screw screw plate 26. And arrange at least one of the remaining unwinding conveying combs so that the x-axis coordinate of the downstream end is substantially the same as the x-axis coordinate of the upstream end of the scraping plate 28. The mixture S moving between the take-in screw plate 26 and the take-up plate 28 is arranged at any position in the x-axis direction by any loosening and conveying comb due to the rotation of the rotary cylinder 3. Since it is scraped up and conveyed, the movement of the mixture S between the take-in screw plate 26 and the raising plate 28 does not stagnate. Therefore, the moving conveyance of the mixture S becomes smooth, and a larger amount of the mixture S can be separated in a short time.

  FIG. 12 is a side view illustrating a state where the screen 7 of the rotating cylinder 3 of the foreign matter separator according to Embodiment 4 of the present invention is removed. In the third embodiment, the short unwinding transport combs 27_1, 27_2, and 27_3 are staggered and arranged. However, in this embodiment, the unraveling transport combs 27_1, 27_2, and 27_3 are entirely disposed between the take-in screw plate 26 and the raking plate 28. Extended to Other points are the same as in the third embodiment. Even in such a configuration, the stagnation of the movement of the mixture S between the take-in screw plate 26 and the raising plate 28 is prevented, the moving and transporting of the mixture S is made smooth, and a separation process of a larger amount of the mixture S is performed in a short time. Can be performed.

  FIG. 13 is a perspective view illustrating a state where the screen 7 of the rotating cylinder 3 of the foreign matter separator according to Embodiment 5 of the present invention is removed. In FIG. 13, the rotating shaft 13 and the shaft 13a are also shown. In the first embodiment, there are three each of the screwing screw plate 26, the unwinding conveying comb 27, and the scraping plate 28. However, in this embodiment, the configuration is provided with six of each. Different from Example 1. The other points are the same as in the first embodiment. In this way, by increasing the number of each of the screwing screw plate 26, the unwinding conveying comb 27, and the scraping plate 28, the number of times of scraping in one rotation cycle of the mixture S charged into the rotating cylinder 3 is increased, The speed at which the mixture S moves to the downstream side in the rotary cylinder 3 is increased by the take-in screw plate 26 and the loosening conveyance comb 27. Therefore, the moving conveyance of the mixture S becomes smooth, and a larger amount of the mixture S can be separated in a short time.

  FIGS. 14A and 14B are a perspective view illustrating a state where the screen 7 of the rotating cylinder 3 of the contaminant separating apparatus according to the sixth embodiment of the present invention is removed, and FIG. 14B is an enlarged view of the unwinding conveying comb 27. FIG. 14A also shows the rotating shaft 13 and the shaft 13a. Compared with Example 1, the part of the loosening conveyance comb 27 is different in this example. In the present embodiment, as shown in FIG. 14B, the unwinding conveying comb 27 has a plurality of linear horizontal bridges between the comb teeth 27b in a direction perpendicular to the comb teeth 27b arranged vertically. The material 27c is constructed so that the comb teeth 27b and the horizontal material 27c form a lattice shape as a whole. By configuring in this way, even when the size of the individual grains (elements) of the mixture S is small, the loosening and conveying comb 27 can scrape and convey. Therefore, the loosening conveyance comb 27 of the first embodiment and the loosening conveyance comb 27 of the present embodiment can be configured to be exchangeable depending on the size of individual grains (elements) of the mixture S.

  In the present embodiment, an improvement of the air nozzle 31 provided in the hopper 9 and the chute 10 attached to the upstream side of the rotating cylinder 3 will be described. FIG. 15 is a perspective view of the periphery of the hopper 9 and the chute 10 of the contaminant separating apparatus 1 according to the seventh embodiment of the present invention. 16A is a transparent perspective view of the hopper 9 and the chute 10 in FIG. 15, and FIG. 16B is a transparent side view of the hopper 9 and the chute 10 in FIG. 15 and 16, the machine casing 2, the motor 11, the gear mechanism 12, and the like are not shown for easy understanding.

Similar to the first embodiment, an opening 9 a communicating with the upper portion of the chute 10 is formed at the bottom of the hopper 9. On the side of the rotating cylinder 3 of the opening 9 a, an inclined plate 9 b that is inclined downward from the side is extended into the chute 10. A bottom surface 10 a of the chute 10 is inclined downward toward the rotating cylinder 3. Inclined plate 9b is the bottom surface 10a of the chute 10 is inclined in the opposite direction, between the bottom surface 10a and the inclined plate 9b, mixtures S to be turned gap 10b to pass is formed. The gap 10b is designed to have such a width that the mixture S can easily pass through, but it is difficult for the operator's hand to enter, thereby preventing an accident where the operator puts his hand into the chute 10 and the hand is caught in the machine. Designed to be able to.

  In the first embodiment, the short nozzle-shaped air nozzle 31 is disposed at the entrance of the chute 10 in the feed direction of the input (see FIG. 4). However, in this embodiment, the air nozzle 31 is formed in a long tube shape. The air jet outlet at the tip is located in the vicinity of the gap 10b and is opened toward the feeding direction of the charged product. When the separation test of the mixture S was actually carried out many times using the contaminant separating device 1, the gap 10b was narrowed for safety design, and as a result, the gap 10b was often filled with the input. I understood. In the first embodiment, a plurality of air nozzles 31 are attached to smoothly feed the input into the rotary cylinder 3 as shown in FIG. 4, but the nozzles are far from the gap 10b and the input is clogged. Cannot be sufficiently prevented. Therefore, in this embodiment, the air outlet of the air nozzle 31 is set near the gap 10b. Thereby, clogging in the gap | interval 10b of an input material can fully be prevented.

  In FIGS. 15 and 16, the base end side of each air nozzle 31 communicates with one air supply pipe 31a, and air is injected from each air nozzle 31 by supplying air to the air supply pipe 31a with an air pump. Is called.

  In this embodiment, an example related to the improvement of the discharge conveyor 15 will be described. FIG. 17: is the side view of the contaminant separation apparatus which concerns on (a) Example 8, and (b) the front view of the part of the discharge conveyor. FIG. 18 is a perspective view of a main part of a discharge conveyor portion of the contaminant separation device according to the eighth embodiment. In FIG. 17, the screen 7 of the rotating cylinder 3 is omitted for easy viewing, and the portions other than the discharge conveyor 15 are the same as those in the first embodiment. In FIG. 18, the wheels of the caster section below the discharge conveyor are not shown.

  The discharge conveyor 15 includes a belt conveyor section 16, an endless belt 16a, a leg section 17, and a caster section 18, which are the same as those in the first embodiment.

  On the left and right sides of the upper surface of the endless belt 16a of the belt conveyor unit 16 (the upstream side with respect to the flow in which the conveyed product is transported on the belt; the same applies hereinafter), the endless belt 16a is being transported along the endless belt 16a. Vertical rectangular plate-like guide plates 35, 35 are provided for preventing the conveyed product from dropping from the belt. A hood 36 that covers the upper surface is provided on the downstream side of the endless belt 16a. The hood 36 includes a top plate curved in a substantially arc shape and a rectangular side plate formed by bending the left and right sides of the upper plate downward. The left and right side plates of the hood 36 are formed integrally with the guide plates 35 and 35.

  A columnar tail pulley 37 and a drive pulley (head pulley) 38 are rotatably mounted on the upstream side and the downstream side of the endless belt 16a of the belt conveyor unit 16, respectively. The endless belt 16a is connected to the tail pulley 37 and the drive pulley. It is provided between the pulleys 38. On the left and right of the tail pulley 37 and the drive pulley 38, side plates 39, 39 for bearing these pulleys are provided. At the center of the side plates 39, 39, there is provided a continuous portion 39a that protrudes downward and is disposed below the endless belt 16a. In this continuous portion 39a, the left and right side plates 39, 39 are continuously provided. ing. Further, the continuous portion 39 a is rotatably supported by the leg portion 17 by the support shaft 40. The arc-shaped slide groove 41 formed on the side surface of the continuous portion 39a and the fixing screw 42 that is screwed into the continuous portion 39a from the outside of the slide groove 41 to fix the continuous portion 39a and the leg portion 17 to each other. The installation portion 39a can be fixed to the leg portion 17 at a desired angle. Further, a fixing bracket 17a is provided at the center of the leg portion 17, and the leg portion 17 can be fixed to the machine frame 2 by the fixing bracket 17a. A drive motor 43 for driving the drive pulley 38 is disposed outside the side plate 39 at one end of the drive pulley 38. In addition, the above structure is the same also in the discharge conveyor 15 shown in FIG.

  In the discharge conveyor 15 of the present embodiment, if the rotation direction of the upper part of the rotating cylinder 3 is the squeezing direction of the guide plates 35, 35, the upper side of the guide plate 35 on the lower side with respect to the squeezing direction. A plate-shaped receiving plate 35a is formed so as to protrude along the guide plate 35. The receiving plate 35a is inclined with respect to the guide plate 35 toward the inner side of the endless belt 16a.

  Actually, when the separation test of the mixture S was performed by the contaminant separation device 1 of the present invention, the separated material lifted up by the scraping plate 28 was lifted upward on the discharge end side of the rotating cylinder 3. When it dropped later, it fell over the guide plate 35, and the phenomenon which fell on the inner bottom part of the rotation cylinder 3 again without riding on the discharge conveyor 15 was observed. In particular, it has been found that when the flow rate of the mixture S to be processed within a unit time is increased, such an event frequently occurs and the processing speed becomes slow.

  Therefore, in the present embodiment, a receiving plate 35a is formed to protrude on the upper side of the guide plate 35 on the lower side with respect to the brewing direction, and the amount of the separated material that falls over the guide plate 35 is reduced. Even when the flow rate of S is large, the discharge flow rate can be maintained and the separation process of the mixture S can be performed at a high processing speed.

FIG. 19 is a perspective view of the main part of the contaminant separation device according to Embodiment 9 of the present invention. In FIG. 19, the machine casing of the rotating cylinder 3, the discharge conveyor, the drive mechanism of the drive shaft 13, and the like are not shown, but these are the same as in the first embodiment. This embodiment is characterized in that a loading conveyor 45 is provided instead of the chute 10 in the first embodiment. Charged conveyor 45 is a conventional belt conveyor, is disposed in the lower portion of the opening 9a of the hopper 9. The downstream side of the input conveyor 45 is inserted into the cylinder from the upstream end side of the rotating cylinder 3. The mixture S thrown from the opening 9a of the hopper 9 is conveyed by the throwing conveyor 45 and thrown into the cylinder on the upstream end side of the rotating cylinder 3.

  Thus, by providing the input conveyor 45 instead of the chute 10, catching and clogging of the mixture S in the input unit is reduced, and the mixture S can be smoothly input into the rotating cylinder 3.

  In FIG. 19, the input conveyor 45 is disposed below the drive shaft 13. However, when the drive shaft 13 obstructs the flow of the mixture S, the input conveyor 45 is disposed above the drive shaft 13. You may comprise.

  FIG. 20 is a perspective view of the main part of the contaminant separation device according to Embodiment 10 of the present invention. 21: (a) The principal part side view around the picking screw board 26 of FIG. 20, (b) The front view of the AA line arrow of (a), (c) The side of one picking screw board 26 FIG. 4D is a front view of one scrambling screw plate 26. In the present embodiment, parts other than the screwing screw plate 26 are the same as those in the first embodiment.

  The height of the screw screw plate 26 in the present embodiment changes at a position in the central axis direction of the rotary cylinder 3. That is, as shown in FIG. 21, the height of the screwing screw plate 26 at the end AB on the side of the discharge port 10c of the chute 10 is h2, and the height of the screwing screw plate 26 at the opposite end DC is set to h2. When h1, it is formed so that h2> h1, and the height of the screwing screw plate 26 changes in proportion to the distance in the central axis direction from the end side AB. On the side of the edge AB, the height of the screwing screw plate 26 is such that the height of the inner apex B when the edge AB of the screwing screw plate 26 is located at the lowest position is the height of the discharge port 10c of the chute 10. It is set to be higher than the height of the discharge port lower side 10d and lower than the drive shaft 13 (see FIG. 21B).

  As a result, the mixture S that has slipped down to the discharge port 10c of the chute 10 is forcibly scraped into the rotating cylinder 3 by the screwing screw plate 26, so that the mixture S stagnates in the vicinity of the discharge port 10c of the chute 10. Is prevented.

  FIG. 22 is a side perspective view of the foreign matter separator according to Embodiment 11 of the present invention. For ease of viewing, the screen 7 and the drive shaft 13 are omitted in FIG. The foreign matter separating apparatus 1 of this embodiment is basically the same as that of the first embodiment, except that the arrangement of the air nozzle 31 and the air supply pipe 31a is changed, and the tip of the inclined plate 9b and the chute 10 are arranged. The difference is that the gap between the bottom surface 10a is slightly widened. The air nozzle 31 is disposed behind the inclined plate 9b in the chute 10 (that is, between the inclined plate 9b and the outlet opening of the chute 10), and the tip of the jet outlet is directed downward and slightly inclined toward the outlet side of the chute 10. Arranged. As a result, when the mixture S is introduced from the hopper 9, the mixture S sliding down the bottom surface 10 a of the chute 10 toward the outlet side is forcibly rotated by air injection from the air nozzle 31 near the outlet of the chute 10. 3, the mixture S can be prevented from stagnating near the exit of the chute 10.

DESCRIPTION OF SYMBOLS 1 Contaminant separator 2 Machine frame 3 Rotating cylinder 4a, 4b End frame 5a, 5b Intermediate frame 6 Vertical frame 7 Screen 8 Shielding door 9 Hopper 9a Opening 9b Inclined plate 10 Chute 10a Bottom surface 10b Gap 10c Discharge port 10d Discharge port Lower side 11 Rotating cylinder drive motor 12 Gear mechanism 13 Drive shaft 13a Shafts 14a, 14b, 14c Storage tray 15 Discharge conveyor 16 Belt conveyor 16a Endless belt 17 Leg 17a Fixing bracket 18 Caster 19 Switch 20 Conveyor control box 25 Support Roller 26 Biting screw plate 27 Unwinding conveying comb 27a Comb tooth base 27b Comb tooth 28 Raising plate 30 Safety bar 31 Air nozzle 31a Air supply pipe 35 Guide plate 35a Receiving plate 36 Hood 37 Tail pulley 38 Drive pulley 39 Side plate 39a Part 41 Slide groove 42 Fixing screw 43 Drive motor 45 Loading conveyor

Claims (8)

A rotating cylindrical body that is formed in a cylindrical shape having a sieve over the entire side peripheral surface, and is rotatably installed with the central axis facing sideways;
A driving device that rotationally drives the rotating cylinder in one direction;
And one or more loosening conveying combs that are convexly provided on the inner peripheral surface of the rotating cylinder,
The rotating cylinder has an inlet side end portion into which the mixture is charged and an outlet side end portion on the opposite side, which is open,
The loosening conveying comb comprises a plurality of comb teeth provided in tandem in the central axis direction of the rotating cylinder,
An envelope surface composed of the shafts of the respective comb teeth is inclined in a direction opposite to the rotation direction of the rotating cylinder from the inlet side end of the rotating cylinder toward the outlet side end. ,
One or more scrambling screw plates are provided on the inner peripheral surface of the rotary cylinder on the inlet side end with respect to the unwinding conveying comb toward the central axis of the rotary cylinder,
The screw screw plate is provided such that a plate surface thereof is inclined in a direction opposite to the rotation direction of the rotating cylinder from the inlet side end of the rotating cylinder toward the outlet side end. A foreign matter separating apparatus characterized by comprising: One or more scraping plates provided on the inner peripheral surface of the rotating cylinder on the outlet side end with respect to the unwinding conveying comb, in parallel with the central axis of the rotating cylinder,
A discharge conveyor installed from the portion where the scraping plate of the rotating cylinder is disposed to the outside of the outlet side end, and
The contaminant separation device according to claim 1 , further comprising: A plurality of the loosening conveying combs and one or more of the scavenging screw plate and the scraping plate, respectively,
When the direction from the inlet side to the outlet side of the rotating cylinder is parallel to the central axis of the rotating cylinder and the x-axis direction,
At least one of the unwinding conveying combs is disposed at a position where the position in the x-axis direction of the outlet side end portion is the same as the position in the x-axis direction of the inlet side end portion of the scraping plate. With
At least one of the unwinding conveying combs is disposed at a position where the position in the x-axis direction of the inlet side end is the same as the position in the x-axis direction of the outlet side end of the take-up screw plate. The contaminant separation device according to claim 2, wherein The discharge conveyor is
An endless belt provided rotatably,
A guide plate disposed on the left and right of the endless belt, the lower end side being lower than the upper surface position of the endless belt and the upper end side being higher than the upper surface position of the endless belt;
When the rotation direction of the upper part when the rotary cylinder is rotationally driven by the driving device is defined as a protruding direction, the upper side from the upper side of the guide plate located on the lower side of the protruding direction among the left and right guide plates A foreign matter separating apparatus according to claim 2 , further comprising a receiving plate that extends toward the inner side of the endless belt and is inclined toward the inner side of the endless belt. The loosening conveyance comb includes a plurality of horizontal members provided between the comb teeth, and the comb teeth and the horizontal members are formed in a lattice shape as a whole. The contaminant separation device according to any one of claims 1 to 4, wherein: A chute having an inclined inner bottom surface that is connected to an inlet side end of the rotating cylinder and is inclined toward the rotating cylinder;
A hopper disposed above the inclined inner bottom surface of the chute, having a bottom surface formed with an opening at a position directly above the inclined inner bottom surface, and opening upward;
An inclined plate that is inclined downward and extended from an end of the opening of the bottom surface of the hopper on the rotating cylinder side;
Claims toward the gap between the lower end and the inclined inner bottom surface of the chute of the inclined plate, characterized in that and a one or a plurality of air nozzles for injecting air in the direction of the rotating cylinder The foreign matter separation device according to any one of 1 to 5 . The foreign matter separating apparatus according to claim 6 , wherein the air nozzle extends to a gap between the inclined plate and the inclined inner bottom surface of the chute. One or more of the screwing screw plates,
The height of the upper side of the end portion on the inlet side of the rotating cylinder when the screwing screw plate is positioned at the lowest position of the rotating cylinder is higher than the height of the lower end side of the inclined inner bottom surface of the chute The contaminant separating device according to claim 6 or 7 , wherein the contaminant separating device is formed so as to be higher.