JPH0824317A - Cylindrical extruding type granulator - Google Patents

Abstract

PURPOSE:To equally cut a cylindrical kneaded object, which is granulated by the cylindrical extruding granulator, into a prescribed length. CONSTITUTION:A cutter 12 is fixed on a loop-shaped member 11 driven to reciprocatively rotate while being hung outside a cylindrical extrusion part 4, the cutter 12 is almost perpendicularly in contact with the cross-section of a cylindrical kneaded object 45 extruded by the cylindrical exclusion part 4, and the cylindrical kneaded object 45 is cut into a cylindrical granules 46 of a prescribed length.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical extrusion granulating apparatus for granulating a kneaded product into a cylindrical shape having a predetermined length in the manufacturing process of granules, powders and the like.

[0002]

2. Description of the Related Art Generally, in a manufacturing process of granules, powders, etc., a kneaded product obtained by kneading a powder agent and a liquid is once granulated into a cylindrical shape by a cylindrical extrusion granulation device to form a cylindrical granulated material. It is being dried. The configuration of a conventional cylindrical extrusion granulating device will be described with reference to FIG.

In FIG. 4, a conventional cylindrical extrusion granulating apparatus 1 is supplied with a kneading material supply pipe 2 for supplying a kneading material from a kneading material manufacturing device or the like (not shown). A hopper 3 for accommodating the kneaded product, a cylindrical extrusion part 4 provided below the hopper 3, and a cylindrical extrusion part 4 provided below the cylindrical extrusion part 4,
A turntable 5 that rotates in a predetermined direction (for example, clockwise), a guide wall 6 provided on the outer peripheral portion of the table 5,
A scrubber 7 for discharging the granulated product in a predetermined direction is provided. The cylindrical push-out part 4 has a cylindrical punching plate 41 having a large number of openings 42 of a predetermined size provided on the outer peripheral surface thereof.
And a screw (not shown) that rotates with a predetermined gap from the inner peripheral surface of the punching plate 41. By the rotation of the screw, the kneaded material between the punching plate 41 and the screw is extruded from the opening 42 to the outside of the punching plate 41 to form a cylindrical kneaded material. The columnar kneaded product extruded from the punching plate 41 is cut into an appropriate length by its own weight and dropped onto the turntable 5. The cylindrical kneaded material (cylindrical granulated material) that has dropped onto the turntable 5 is conveyed while being guided by the guide wall 6 so as not to fall from the turntable 5, and is rotated by the scrubber 7 at a predetermined position. It drops from above onto a vibration conveyor (not shown) or the like, and is conveyed to the next drying step or the like.

For example, when manufacturing granules, the size of the openings 42 of the punching plate 41 is 0.4 to 1.2 in diameter.
The range of about mm is used. Opening 4 depending on compaction (denseness) of the kneaded product that is the origin of the granules
When the diameter of 2 is small (for example, about 0.5 mm), the kneaded product extruded from the punching plate 41 is cut by its own weight to form a cylindrical granulated product of, for example, about 10 to 20 mm.

[0005]

However, depending on the type and purpose of the granules, a granule having high grain strength may be required, and in this case, a kneaded product having a high compaction is used. However, when a kneaded product having a high compaction is extruded from the punching plate 41 using a cylindrical extrusion granulating device, it is not cut into a column having an appropriate length by its own weight, and as shown in FIG. Extends for a long time. Therefore, the operator attends the cylindrical extrusion granulator and presses the punching plate 4
There was a problem that the noodle-like kneaded product 50 extruded from No. 1 had to be cut into an appropriate length to equalize the discharge amount to the conveying device and the drying device.

Further, it is difficult for the operator to manually cut the extruded kneaded product into short pieces, and in general, the length of the cut columnar granulated material 50 is a predetermined length. Longer and uneven. However, long granules have a strong tendency to aggregate in a lump, and turntable 5
It becomes an intermittent lump from the top and falls onto a vibrating conveyor or the like. As a result, there is a problem in that the supply of the granulated product to the next drying step and the like becomes non-uniform, which causes poor flow in the entire manufacturing process. In addition, the granulated product in the form of agglomerates has a problem in that it is difficult to transfer heat to the inside, which causes poor drying. Further, the poorly-dried granules adhere to the wall surface of the apparatus, the basket, and the like in a step after the drying step, which causes a problem that the manufacturing step must be stopped for cleaning.

The present invention has been made in order to solve the problems of the conventional examples as described above. Even when a kneaded product having a high compaction is used, the extruded kneaded product can be uniformly given. It is an object of the present invention to provide a cylindrical extrusion granulating apparatus equipped with a granule cutting device that cuts a cylindrical granule having a length.

[0008]

In order to achieve the above object, a cylindrical extrusion granulating apparatus of the present invention comprises a substantially cylindrical punching plate having a plurality of openings of a predetermined size formed on an outer peripheral surface thereof. The punching plate is provided with a screw that rotates at a predetermined gap from the inner peripheral surface of the punching plate, and the kneaded material between the punching plate and the screw is rotated from the opening to the outside of the punching plate by rotation of the screw. Provided in the vicinity of the outer peripheral surface of the punching plate and a cylindrical extruding portion for extruding, the kneaded product extruded from the opening by moving a predetermined range along the outer peripheral surface has a predetermined length. And a plurality of cutters for cutting into a cylindrical granulated product. In the above configuration, it is preferable that the cutter has an axis of rotation coaxial with the axis of rotation of the screw and is held at equal intervals by an annular member provided outside the cylindrical punching plate. Further, in the above structure, it is preferable that the annular member is suspended from an upper portion of the cylindrical pushing portion. Further, in the above structure, it is preferable that the annular member reciprocally rotates at a predetermined angle at a predetermined speed. Further, in the above structure, the cutter is fixed to the annular member so as to make a predetermined angle with respect to the vertical, so as to come into contact with the cross section of the kneaded product that is extruded from the opening and hung down by its own weight. Preferably. Further, in the above structure, the cutter is a double-edged blade, and is preferably made of any one selected from alloy steel, hard plastic, and ceramics. Further, in the above structure, it is preferable that the annular member is driven by the reciprocating motion of the piston of the air cylinder.

[0009]

According to the cylindrical extrusion granulating apparatus of the present invention constructed as described above, the kneaded product existing between the screw and the punching plate is provided on the outer peripheral surface of the punching plate by the rotation of the screw of the cylindrical extruding section. Is extruded through the opened holes,
A column-shaped kneaded product having a cross section substantially equal to the shape of the opening is formed. By moving a cutter provided in the vicinity of the outer peripheral surface of the punching plate along the outer peripheral surface in a predetermined range at a predetermined speed, the kneaded product extruded from the opening is cut into a predetermined length, and a columnar shape is formed. A granulate is formed. By moving the cutter intermittently and controlling the stop time thereof, a cylindrical granulated product having an arbitrary length is formed.

By holding the cutters at equal intervals on an annular member provided outside a cylindrical punching plate whose axis of rotation is coaxial with the axis of rotation of the screw, the movements of all the cutters can be made uniform. The length of the cut columnar granulated product becomes uniform. Also, by suspending the annular member from the upper part of the cylindrical extruding part, the cut columnar granulated material does not adhere to the driving mechanism of the annular member or clog the gap, so that the annular member and the cutter can be driven smoothly. become.
Further, by rotating the annular member back and forth within a range of a predetermined angle, there is generally no interference (collision) with the kneaded material supply pipe provided at the upper part of the cylindrical extrusion part.

[0012] The cutter is pushed so as to come into contact with the cross section of the kneaded product extruded through the opening and hanging down by its own weight at a substantially right angle.
By fixing to the annular member so as to form a predetermined angle with respect to the vertical, the end surface of the cut columnar granulated product becomes a right angle, and the fragments of the granulated product do not appear much at the time of cutting.
Further, by using a double-edged cutter, it is possible to cut the columnar granulated product in any case of reciprocating rotation of the annular member. Further, by making the material of the cutter any one selected from stainless steel, hard plastic and ceramic, rust etc. does not occur and it is hygienic. In addition, by driving the annular member by the reciprocating motion of the piston of the air cylinder, it is possible to respond to the thickness and the degree of compaction of the cylindrical kneaded product to be cut, and compared with the case of using a motor No trouble such as burnout occurs and the operation is performed smoothly.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cylindrical extrusion granulating apparatus of the present invention will be described with reference to FIGS. 1 to 3 showing a preferred embodiment thereof. 1 is a perspective view showing a configuration of a preferred embodiment of a cylindrical extrusion granulating apparatus, FIG. 2 is a side sectional view of FIG. 1, and FIG. 3 is a cylindrical extrusion granulating apparatus shown in FIG. 6 is a perspective view showing the operation of FIG.

As shown in FIGS. 1 and 2, a cylindrical extrusion granulating apparatus 1 of this embodiment is a kneaded product for supplying a kneaded product from a kneaded product manufacturing apparatus or the like (not shown). Supply pipe 2,
A hopper 3 for accommodating the supplied kneaded product, a cylindrical extruding part 4 provided below the hopper 3, and a turn provided below the cylindrical extruding part 4 and rotating in a predetermined direction (for example, clockwise direction). The table 5, a guide wall 6 provided on the outer periphery of the table 5, a scrubber 7 for discharging the granulated product in a predetermined direction, and a columnar shape having a uniform predetermined length for the extruded kneaded product. A granule cutting device 10 for cutting the granules is provided.

The granulated product cutting device 10 includes an annular member 11 suspended from an upper portion of the cylindrical extruding portion 4 via an arm 13.
A plurality of cutters 12 held by the annular member 11 at equal intervals, a bearing portion 14 that rotatably holds the annular member 11 via an arm 13, and a drive mechanism 15 that reciprocally rotates the annular member 11. are doing. As shown in FIG. 2, the drive mechanism 15 uses the air cylinder 16 as an actuator, and the reciprocating (expanding and contracting) motion of the piston 17 causes the annular member 1 to move.
Rotate 1 back and forth. Since the arm 13 does not interfere (collide) with the kneaded material supply pipe 2, the angular range in which the annular member 11 can be reciprocally rotated in this embodiment is limited to 120 degrees or less, more specifically 60 degrees or less. To be done.

As shown in FIG. 2, the cylindrical push-out section 4 has a cylindrical punching plate 41 having a large number of openings 42 of a predetermined size formed on the outer peripheral surface thereof, and an inner peripheral surface of the punching plate 41 and a predetermined peripheral surface. The first screw 43 that rotates with a gap, and the kneaded material that is supplied to the first screw 43 and the punching plate 4
It is constituted by a second screw 44 and the like for vertically downward feeding between the first screw and the first screw. By the rotation of the first screw 43, the kneaded material between the punching plate 41 and the first screw 43 is extruded from the opening 42 to the outside of the punching plate 41 to form a cylindrical kneaded material 45. .

The columnar kneaded product 45 extruded from the punching plate 41 hangs down by its own weight. Cutter 12
A predetermined angle (for example, about 45 to 60 degrees) with respect to the vertical direction so as to make contact with the cross section of the hanging kneaded product 45 at a substantially right angle.
Are fixed to the annular member 11 by bolts 18 or the like. As a result, the end surface of the cut columnar granulated material 46 becomes a right angle, and fragments are less likely to occur during cutting. As described above, since the rotatable angle of the annular member 11 is limited to 60 degrees or less, it is preferable to appropriately select the number of the cutters 12 within the range of 10 to 20.

The kneaded product granulated by this apparatus is
Generally, they are medicines, agricultural chemicals, fertilizers, feeds (pet foods) and the like. Therefore, in consideration of hygiene, the material of the cutter 12 is preferably selected from alloy steels such as stainless steel and Ni steel, and materials such as hard plastic and ceramics that do not cause rust. Further, it is preferable that the cutter 12 be a double-edged blade so that the cylindrical granulated material 46 can be cut when the annular member 11 is reciprocally rotated.

Although it depends on the purpose of the granulated product, considering the flow of the cylindrical granulated product after cutting, it is preferable to cut into a length of, for example, about 3 to 50 mm. Therefore, the cutter 12 (or the annular member 11) is intermittently cut according to the length to be cut.
Drive. The length of the kneaded material 45 extruded while the cutter 12 is stopped corresponds approximately to the length of the cut columnar granulated material 46.

Next, the operation of this embodiment will be described. As shown in FIGS. 2 and 3, the punching plate 41 of the cylindrical extrusion unit 4 is
The column-shaped kneaded material 45 extruded from is cut into a predetermined length by the cutter 12, and the cut column-shaped granulated material 4 is cut.
6 falls on the turntable 5. As shown in FIG. 3, the cylindrical granulated material 46 is conveyed while being guided by the guide wall 6 so as not to fall from the turntable 5,
The scrubber 7 drops it from the turntable 5 onto a vibrating conveyor (not shown) or the like at a predetermined position and conveys it to the next drying step or the like. Here, the cut columnar granulated material 46 has a length in a predetermined range (for example, 3 to 50 mm) and is substantially uniform. Also, depending on the type and purpose of the granules, even when using a kneaded product with high compaction,
In order to forcibly cut the cylindrical kneaded material 45 extruded from the punching plate 41 into a predetermined length by the cutter 12,
Unlike the conventional example shown in FIG. 4, the noodles do not extend long. Therefore, it is not necessary for an operator to accompany the cylindrical extrusion granulator and to cut the noodle-like kneaded product extruded from the punching plate 41 into an appropriate length.

Further, the cut cylindrical granules 46 are
Since the length is relatively short and almost uniform, they do not aggregate as a lump and fall from the turntable 5 onto a continuous vibrating conveyor or the like. As a result, the supply of the granulated product to the next drying step and the like becomes uniform, and neither defective flow nor defective drying occurs in the whole manufacturing process. In addition, in a step after the drying step, it does not adhere to the wall surface of the apparatus, the basket, etc., and it is not necessary to stop the manufacturing step for cleaning.

In the above embodiment, the cutter 12 is fixed to the annular member 11 suspended from the upper portion of the cylindrical extruding portion 4, and the annular member 11 is driven so as to reciprocally rotate. In order not to interfere with the object supply pipe 2,
For example, the same effect can be obtained by holding the annular member 11 from the side of the hopper 3 or the cylindrical extruding portion 4 and driving the annular member 11 so as to continuously rotate in a predetermined direction. Further, the actuator is not limited to the air cylinder 17, and a servo motor or an inverter (induction motor) may be used.

[0022]

As described above, according to the present invention, the kneaded product existing between the screw and the punching plate is extruded through the opening provided on the outer peripheral surface of the punching plate by the rotation of the screw of the cylindrical extruding portion. The cylindrical kneaded material formed to have a cross section substantially equal to the shape of the opening is moved by moving a cutter provided near the outer peripheral surface of the punching plate in a predetermined range along the outer peripheral surface. Since it is configured to cut into a predetermined length and form a cylindrical granulated product,
By moving the cutter intermittently and controlling the stop time thereof, it is possible to form a cylindrical granulated product of any length.

Further, by holding the cutters at equal intervals on an annular member provided outside a cylindrical punching plate whose axis of rotation is coaxial with the axis of rotation of the screw, the movements of all the cutters can be aligned. Therefore, the length of the cut columnar granulated product can be made uniform. Also, by suspending the annular member from the upper part of the cylindrical extrusion part, the cut columnar granules do not adhere to the drive mechanism of the annular member or clog the gap, and the annular member and cutter are driven smoothly. can do. Further, by rotating the annular member back and forth within a range of a predetermined angle, it is possible to prevent interference (collision) with the kneading material supply pipe generally provided at the upper part of the cylindrical extrusion part.

The cutter is pushed so as to come into contact with the cross section of the kneaded product extruded through the opening and hanging down by its own weight at a substantially right angle.
By fixing it to the annular member so that it makes a predetermined angle with respect to the vertical, the end surface of the cut columnar granulated product can be made into a right angle, and the fragments of the granulated product do not come out much at the time of cutting. End Further, by using a double-edged cutter, it is possible to cut the columnar granulated product in any case of reciprocating rotation of the annular member. Further, by making the material of the cutter any one selected from stainless steel, hard plastic, and ceramic, it is possible to make it sanitary without generating rust or the like. Also, by driving the annular member by the reciprocating motion of the piston of the air cylinder,
It is possible to deal with the thickness of the cylindrical kneaded product to be cut and the degree of compaction, and it is possible to prevent problems such as burnout of the motor as compared with the case of using the motor.

Further, depending on the type and purpose of the granules, even when a kneaded product having a high compaction is used, the cylindrical kneaded product extruded from the punching plate is forcibly cut into a predetermined length by a cutter. Unlike the conventional example, it does not extend into a noodle shape for a long time, and it is not necessary for an operator to accompany the cylindrical extrusion granulating device. Further, it is not necessary to cut the noodle-like kneaded product extruded from the punching plate into an appropriate length. further,
Since the cut columnar granules have a relatively short length and are almost uniform, they do not aggregate as a lump, and the granules can be uniformly supplied to the next step. Poor flow and poor drying do not occur in general. In addition, in a step after the drying step, it does not adhere to the wall surface of the apparatus, the basket, etc., and it is not necessary to stop the manufacturing step for cleaning.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a preferred embodiment of a cylindrical extrusion granulating apparatus of the present invention.

FIG. 2 is a side sectional view of FIG.

FIG. 3 is a perspective view showing the operation of the cylindrical extrusion granulating apparatus shown in FIG.

FIG. 4 is a perspective view showing a configuration of a conventional cylindrical extrusion granulating apparatus.

FIG. 5 is a perspective view showing an operation when a kneaded product having a high compaction is extruded by a conventional cylindrical extrusion granulating device.

[Explanation of symbols]

 1: Cylindrical extrusion granulation device 2: Kneaded material supply pipe 3: Hopper 4: Cylindrical extrusion part 5: Turntable 6: Guide wall 7: Scrubber 10: Granule cutting device 11: Annular member 12: Cutter 13: Arm 14: Bearing part 15: Drive mechanism 16: Air cylinder 17: Piston 18: Bolt 41: Punching plate 42: Open hole 43: First screw 44: Second screw 45: Cylindrical compound 46: Cylindrical column Granulated product 50: Noodle-like kneaded product

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display area // B29B 9/06 9350-4F

Claims (7)

[Claims] 1. A punching plate of a substantially cylindrical shape having a plurality of openings of a predetermined size formed on an outer peripheral surface thereof, and a screw rotating at a predetermined gap from an inner peripheral surface of the punching plate, A cylindrical extruding portion for extruding a kneaded material between the punching plate and the screw by rotation of the screw from the opening to the outside of the punching plate, and provided near the outer peripheral surface of the punching plate. A cylindrical extrusion granulating apparatus comprising: a plurality of cutters that cut a kneaded product extruded from the openings into a cylindrical granulated product having a predetermined length by moving along a surface in a predetermined range. 2. The cylindrical type cutter according to claim 1, wherein the cutter has an axis of rotation coaxial with the axis of rotation of the screw and is held at equal intervals by an annular member provided outside the cylindrical punching plate. Extrusion granulator. 3. The cylindrical extrusion granulation apparatus according to claim 2, wherein the annular member is suspended from an upper portion of the cylindrical extrusion unit. 4. The cylindrical extrusion granulating apparatus according to claim 3, wherein the annular member reciprocally rotates at a predetermined angle at a predetermined speed. 5. The cutter is fixed to the annular member at a predetermined angle with respect to the vertical direction so as to contact the cross section of the kneaded product extruded from the opening and hung down by its own weight at a substantially right angle. The cylindrical extrusion granulating apparatus according to claim 2. 6. The cylindrical extrusion granulator according to claim 1, 2 or 5, wherein the cutter is a double-edged blade and is made of any one selected from alloy steel, hard plastic, and ceramics. 7. The cylindrical extrusion granulating apparatus according to claim 4, wherein the annular member is driven by reciprocating motion of a piston of an air cylinder.