JP2000135596A - Compression solidification equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screw extruder provided with a feed screw for feeding an object to be compressed in an axial direction in a cylindrical casing, and to provide a compressed object at an outlet at an axial end of the casing. By communicating a cylindrical body whose diameter gradually decreases as it goes in the object feeding direction, and by dividing this cylindrical body into a plurality of pieces in the circumferential direction, the discharge side of the compressed object is made freely expandable and contractible in the radial direction, and the cylindrical body is formed. In the compression solidification device that was pressed from the back,
Provided is a compression solidification device in which adjustment of a pressing force applied to a cylindrical body from the back is easy and stable operation can be performed. SOLUTION: A hydraulic cylinder 28 for pressing each component of a cylindrical body 27 from the back is provided, and a hydraulic unit 18 for controlling the hydraulic cylinder 28 is provided. The pressing force of the hydraulic cylinder 28 is applied to the hydraulic unit 18. A pressure gauge for measuring the pressure and a pressure control valve for adjusting the pressing force of the hydraulic cylinder 28 are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compression solidifying apparatus for compressing and solidifying shredded chips shredded by a shredder and fiber chips generated in a fiber factory or the like and discharging them.

[0002]

2. Description of the Related Art A screw extruder provided with a feed screw for feeding fiber waste in an axial direction is provided in a cylindrical casing, and an outlet at an axial end of the casing is provided in a direction toward the fiber waste feed direction. Therefore, there is an apparatus in which a tubular body having a gradually decreasing diameter is communicated so that the fiber waste sent by a feed screw passes through the tubular body to compress and solidify the fiber waste.

In this device, a cylindrical body is divided into a plurality of parts in a circumferential direction so that a discharge side of an object to be compressed can be expanded and contracted in a radial direction. A coil spring or an air cylinder for pressing is provided, and by adjusting these pressing forces, the hardness of the object to be compressed or the load of the screw extruder is adjusted.

[0004]

In the prior art, the pressing force is adjusted by changing the biasing force of the spring by tightening and loosening the holding screw in the coil spring, but this adjustment is difficult. is there. Further, even in the case of an air cylinder, there is a problem that pressure adjustment is difficult and power is insufficient.

Accordingly, the present invention has been made in view of the above problems,
It is an object of the present invention to provide a compression solidification apparatus that can easily adjust a pressing force applied to a cylindrical body from the back side and can perform a stable operation.

[0006]

The technical means taken by the present invention to solve the above technical problem is to provide a feed screw 20 for feeding an object to be compressed in a cylindrical casing 19 in an axial direction. A screw extruder 15 is provided, and a cylindrical body 2 having a diameter gradually decreasing toward the compressed object feeding direction A is provided at an outlet 24 at an axial end of the casing 19.
7 in communication with each other and dividing the cylindrical body 27 into a plurality of parts in the circumferential direction, so that the discharge side of the object to be compressed can be radially expanded and contracted.
a from the back, and a hydraulic unit 18 for controlling the hydraulic cylinder 28.
The hydraulic unit 18 is provided with a pressure gauge 62 for measuring the pressing force of the hydraulic cylinder 28 and a pressure control valve 60 for adjusting the pressing force of the hydraulic cylinder 28.

Further, when a large load is applied to the screw extruder 15, a pressure reducing circuit 73 for reducing the pressing force of the hydraulic cylinder 28 to a predetermined pressing force is provided in the hydraulic unit.
When the load of the screw extruder 15 decreases, the pressure control valve 6
It is also characterized in that control is performed to increase the pressing force of the hydraulic cylinder 28 to the pressing force set at 0. Further, after the pressing force of the hydraulic cylinder 28 is reduced to a predetermined pressing force by the pressure reducing circuit 73, if the load of the screw extruder 15 does not decrease even after a predetermined time has elapsed, the pressing force of the hydraulic cylinder 28 is reduced. Is released, and when the load of the screw extruder 15 is reduced, the pressing force of the hydraulic cylinder 28 is controlled to be increased to the pressing force set by the pressure control valve 60.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 12 show a first embodiment. 1 and 2, a shredding / compression solidifying apparatus 1 employing a compression solidifying apparatus 3 of the present invention.
The shredding / compression solidifying device 1 includes a shredder 2 for shredding an object to be shredded (object to be compressed) such as paper, and a shredder 2 for shredding the shredder shredded by the shredder 2. Solidification device 3 for solidifying by pressing, packaging device 4 for packing compressed and solidified shreds, dust collector (eg, bag filter) 5 for collecting dust (dust), and compression solidification device 3 And a blower (such as a blower) 6 for sucking dust from the filter and sending the dust to the dust collector 5.

As shown in FIG. 1, the main body 7 of the shredder 2 includes a supply section 8 at an upper portion and a cutting section 9 at an intermediate portion in the vertical direction.
And a lower discharge section 10. The supply unit 8 has an inlet 11 that opens laterally (or upwards), and has a lower end opening shape.
It is configured such that the chopped object input from the container is dropped and supplied to the cutting section 9 below.

The cutting section 9 is provided with a rotary cutter which is driven to rotate by a rotary shaft 12. The rotary cutter is provided from a motor 13 disposed behind the main body section 7 via a speed reducer 14 and the like. Power is transmitted to the cutting unit 9 and the cutting unit 9 is driven. Here, the shredded object dropped and supplied from above is shredded, and the shredder formed by shredding is cut downward. To fall.

The discharge section 10 is formed in the shape of an upper and lower opening, and the lower end opening is formed as a shredder discharge port 10a of the shredder 2. The shredder shred by the cutting section 9 drops and discharges downward.
As shown in FIGS. 1 and 2, the compression and solidification device 3 includes a screw extruder 15, a guide cylinder (a hopper or the like) 16, a compression unit 17, a hydraulic unit 18, and the like.

The screw extruder 15 supports a feed screw 20 in a cylindrical casing 19 so as to be rotatable around an axis, and has a driving means (a geared motor or the like) 21 at the rear end of the casing 19. The main configuration. The casing 19 is formed in a cylindrical shape, and is fixed to a support base 22 installed on the floor so as to be inclined so as to move upward as it goes forward. An opening from the upper wall to the middle of the side wall is formed on the upper surface side of the casing 19, and this opening is a supply port 23.
The end of the casing 19 on the front side in the axial center direction is formed in an opening shape, and this end opening is formed as an outlet portion 24. Therefore, the casing 19 is inclined so that the outlet portion 24 side becomes higher. It has been.

The supply port 23 may be provided on the side of the casing 19. The guide tube 16 is formed in an upper and lower opening shape, and the guide tube 16 is fixed to the casing 19 so that a lower end opening communicates with the supply port 23 of the casing 19. The upper portion of the guide tube 16 is connected to the discharge portion 10 so that the upper end opening communicates with the shredder discharge port 10 a of the shredder 2, and the fine portion discharged from the shredder 2 through the guide tube 16. All chips are supplied into the casing 19.

The feed screw 20 has a spiral feed blade 26 provided on the peripheral surface of a metal shaft portion 25, and is arranged coaxially with the axis of the casing 19.
The rear end side is rotatably supported in a cantilever manner via a bearing, and the front end side is extended to a position reaching the outlet 24 of the casing 19. When the feed screw 20 is driven to rotate around the axis by the driving means 21, the shreds supplied into the casing 19 are axially forward (in the direction of arrow A in FIG. 1), that is, at the outlet. Transferred to 24.

The compression section 17 is provided on the outlet 24 side of the screw extruder 15 and is provided with a feed screw 20.
Is compressed and solidified. As shown in FIG. 3, the compression section 17 supports a cylindrical body 27 for compressing the shredder, a hydraulic cylinder 28 for adjusting the degree of compression of the shredder, and supports the cylindrical body 27 and the hydraulic cylinder 28. Support 29 and shredded debris from casing 1
And a guide sleeve 30 that guides the cylindrical body 27 from the cylindrical body 9.

In the present embodiment, the support 29 is provided as shown in FIGS.
As shown in FIG. 6, the casing 19 has a cylindrical portion 29 </ b> A formed substantially in the same diameter as the casing 19 and arranged concentrically with the casing 19. Flanges 31 and 32 are fixed to the front and rear ends of the cylindrical portion 29A, respectively. A rear flange 32 is fixed to a flange 33 provided at the outlet 24 of the casing 19 by bolts 34 and nuts 35. An annular concave portion 36 is formed over the entire periphery of the rear flange 32 on the inner peripheral side of the end surface on the outlet portion 24 side. A convex portion 37 is formed.

As shown in FIGS. 7 and 8, the cylindrical body 27 is disposed in a support body 29, and is formed in a tapered shape whose diameter gradually decreases in the direction A in which the chips are fed. And is divided into a plurality of pieces in the circumferential direction (divided into four by a cut surface along the axial direction). In the present embodiment, the cylindrical body 27 is constituted by four constituent bodies 27a. .

Each component 27a constituting the cylindrical member 27
An engaging piece 38 extending radially outward is integrally provided on the rear side of the shredder feed direction A (the larger diameter side of the cylindrical body 27). Each of the engagement pieces 38 is positioned between the projections 37 in the annular recess 36 of the flange 31 so that the annular recess 36
The movement around the axis of the cylindrical body is restricted by the engagement pieces 38 being sandwiched between the projections 37 (therefore, the cylindrical body 27 is prevented from rotating around the axis). Has been).

Since the depth d of the annular recess 36 is larger than the thickness t of the engagement piece 38 and the inner diameter of the cylindrical portion 29A is larger than the outer diameter of the cylindrical body 27 on the larger diameter side. , Cylindrical body 27
As shown by the phantom line in FIG. 3, each of the constituent bodies 28a is swingable radially outward with the rear end side of the shredded chip feeding direction A as a fulcrum. The front side in the feeding direction A (discharge side of the shredders) is freely expandable and contractible in the radial direction.

In a state where the diameter of the front side of the cylindrical body 27 in the shredder feed direction A is the widest, the cylindrical body 27 is in the position shown in FIG.
As shown by an imaginary line, the taper shape gradually increases in diameter toward the front of the shredder feed direction A. Also,
A pair of elastically deformable sponge packings 39 and 40 are interposed in the annular concave portion 36 so as to sandwich the engaging piece 38, thereby preventing the cylindrical body 27 from rattling.

The guide sleeve 30 is provided on the casing 19.
Is fitted inside the outlet part 24 of the helmet. This guide sleeve 3
A flange 42 is sandwiched between the flanges 31 and 33 and fastened together by bolts 34 and nuts 35.
Is provided, and the inner peripheral surface 43 of the guide sleeve 30 is provided.
Is formed on a tapered guide surface whose diameter becomes smaller as it goes in the shredder feed direction A, and the shredder is guided from the casing 19 to the tubular body 27 by the inner peripheral surface 43.

Further, the guide sleeve 30 projects slightly from the inner peripheral end side of the front side of the shredder feed direction A in the shredder feed direction A toward the large diameter side of the tubular body 27 (the cylindrical body 27). A guide ring 44 is provided which is inserted (in a state where each of the components 27a can swing), and the guide ring 44 blocks shredder chips between the engagement piece 38 and the guide sleeve 30 or the like. And the cylindrical body 27 can be smoothly expanded and contracted, and the shredder is guided in the feed direction A.

As shown in FIGS. 4 and 9, an inspection port 46 is provided in the lower part of the intermediate portion of the cylindrical portion 29A of the support 29 so as to be opened and closed by a lid 45. Also, on the outer surface of the cylindrical portion 29A on the end side in the shredded chip feed direction A,
A cylinder mounting seat 47 is fixed at a position corresponding to each component 27a of the cylindrical body 27, and an insertion hole 48 that penetrates the cylinder mounting seat 47 and the cylindrical portion 29A is formed.

The hydraulic cylinder 28 is constituted by a double-acting cylinder, and is provided in a number (four) corresponding to the structural body 27a of the cylindrical body 27, and is screwed into a screw hole 49 formed in the cylinder mounting seat 47. The hydraulic cylinder 28 is mounted and fixed to the cylinder mounting seat 47 by the bolts 50 that are combined. A press fitting 52 is attached and fixed to the tip of a cylinder rod 51 of the hydraulic cylinder 28.
Reference numeral 2 allows the cylinder rod 51 to move back and forth through the insertion hole 48 by the reciprocating operation.

Then, by projecting the cylinder rod 51, the pressing fitting 52 is brought into contact with a contact portion 53 fixed to the back surface of each of the components 27a of the cylindrical body 27, and By pressing 27a from the back, the cylindrical body 27
Can be held in a completely reduced state as shown by the solid line in FIG. Therefore, the shreds sent from the casing 19 are pushed by the subsequent shreds and pass through the cylindrical body 27, and when passing through the cylindrical body 27, the shreds are removed from the inner surface of the cylindrical body 27. As a result, it is compressed and solidified by being guided radially inward, and is discharged from the cylindrical body 27.

The cylindrical body 27 formed by the hydraulic cylinder 28
By changing the pressing force on the shredder, the degree of compression of the shreds is adjusted. The tubular body 28 may be divided into two or three. The hydraulic unit 1
Numeral 8 controls the hydraulic cylinder 28.
FIG. 3 shows a hydraulic circuit diagram of the hydraulic unit 18. Control of the hydraulic cylinder 28 will be described with reference to FIG.

In the present embodiment, the hydraulic unit 18
A variable displacement hydraulic pump 55 capable of adjusting pressure, a motor 56 for driving the hydraulic pump 55, a tank 57 for storing hydraulic oil, a first switching valve 58 including a 4-port 3-position electromagnetic switching valve, A second switching valve 59 comprising a 4-port 2-position electromagnetic switching valve; a first pressure control valve 60 comprising a pressure-adjustable pilot-operated relief valve; and a second pressure-adjusting pilot-operated relief valve 60 comprising a pilot-operated relief valve. , And a pressure gauge 62 and the like.

In this configuration, the first switching valve 58 is moved from the neutral position 58a shown in FIG.
And the pressure is switched to the pressing position 58b, so that the pressure oil is supplied to the head side (piston top side) of each hydraulic cylinder 28 and the pressure oil is drained from the rod side of the hydraulic cylinder 28 to the tank 57, The cylindrical body 27 is pressed by the hydraulic cylinder 28.

The first pressure control valve 60 includes a drain oil passage 63 communicating with a tank 57 and a first switching valve 58.
Is provided in a bypass oil passage 65 which communicates with a supply / discharge oil passage 64 extending from the hydraulic cylinder 28 to the head side of the hydraulic cylinder 28, and is a reaction force from shredder that is compressed and solidified when passing through the cylindrical body 27. As a result, the pressure on the head side of the hydraulic cylinder
When the pressure exceeds the pressure set by the pressure control valve 60, the first pressure control valve 60 is opened by the pilot pressure, and the drain oil passage 63 and the supply / discharge oil passage 64 communicate with each other. Is drained to the tank 57.

Accordingly, the pressing force of the hydraulic cylinder 28 on the cylindrical body 27 is set by the set pressure of the first pressure control valve 60, and the cylindrical body 27 is passed by the set constant pressing force. The shreds are compressed and solidified to a substantially constant hardness. Then, by adjusting the pressure of the first pressure control valve 60, the cylindrical body 2 by the hydraulic cylinder 28 is adjusted.
7 is adjusted (that is, the pressure of the first pressure control valve 60 is increased so that the hydraulic cylinder 28 presses the cylindrical body 27). The pressure increases and the pressure of the first pressure control valve 60 is reduced to reduce the pressing force of the hydraulic cylinder 28 on the cylindrical body 27).

The pressure gauge 62 is provided in the supply oil passage 67 from the hydraulic pump 55 to the first switching valve 58, and the first pressure control valve 6 is monitored while looking at the pressure gauge 62.
The set pressure of 0 can be easily changed to a desired pressure.
8 can be measured. The second switching valve 59 is interposed in a branch oil passage 68 branched from the supply oil passage 67 and having a closed end.
Further, the second pressure control valve 61 is interposed in a bypass oil passage 70 that communicates a halfway portion of the branch oil passage 68 from the second switching valve 59 to the end and a drain oil passage 69 that communicates with the tank 57. And the pressure is set to be lower than the set pressure of the first pressure control valve 60.

Then, the fine chips are excessively supplied, and the fine chips are congested in the cylindrical body 27 (they are not smoothly transported), and a large load is applied to the screw extruder 15. When the load of a certain motor becomes large and the load current of the motor 21 exceeds a set current value (for example, 15 A), after a predetermined time (for example, 3 seconds), the solenoid 71 of the second switching valve 59 is turned on. When excited, the second switching valve 5
9 is a closed position 59 for blocking the branch oil passage 68 shown in FIG.
a, the switch is switched to the communication position 59b for opening the branch oil passage 68, the second pressure control valve 61 is opened by the pilot pressure, and the drain oil passage 69 and the branch oil passage 68 are communicated. The pressure oil is drained to the tank 57, and the circuit pressure from the hydraulic pump 55 to the head side of the hydraulic cylinder 28 is reduced to the pressure set by the second pressure control valve 59. The pressing force decreases to a predetermined pressing force.

As a result, when the load of the screw extruder 15 (the load of the motor 21) is reduced by eliminating the congestion of the fine chips in the cylindrical body 27, the solenoid 71 of the second pressure control valve 61 is reduced. Is demagnetized, the second switching valve 59 is switched from the communication position 59b to the closing position 59a, and the circuit pressure from the hydraulic pump 55 to the head side of the hydraulic cylinder 28 is set by the first pressure control valve 60. Pressure up to pressure,
Driving continues.

The second switching valve 59, the second pressure control valve 61, the branch oil passage 68, the drain oil passage 69, and the communication oil passage 70
For example, when a large load is applied to the screw extruder 15, a pressure reducing circuit 73 that reduces the pressing force of the hydraulic cylinder 28 to a predetermined pressing force is configured. Further, even if a predetermined time has elapsed, the screw extruder 15 (motor 2
If the load of 1) does not decrease, the solenoid 66 of the first switching valve 58 is demagnetized and the solenoid 72 is excited, and the first switching valve 58 is switched to the open position 58c, and the hydraulic cylinder 28 Pressure oil is supplied to the rod side, and the pressure oil on the head side is drained to the tank 57, the cylinder rod 51 is retracted, and the pressing fitting 52 is inserted into the insertion hole 4.
8, the pressing force of the hydraulic cylinder 28 on the cylindrical body 27 is released.

Then, the screw extruder 15 (motor 2)
When the load of 1) is reduced, the first switching valve 58 is moved to the pressing position 5
8b, the circuit pressure from the hydraulic pump 55 to the head side of the hydraulic cylinder 28 is increased to the pressure set by the first pressure control valve 60, and the operation is continued. By controlling the pressure of the hydraulic unit 18 in this manner, overload of the screw extruder 15 (motor 21) can be prevented, and clogging of shreds in the cylindrical body 27 can be prevented. The hardness of the compressed and solidified shreds can be made substantially constant, and stable operation can be performed.

The packaging device 4 is shown in FIGS.
As shown in FIG. 2, a guide tube 74 connected to the front end side of the cylindrical portion 29A of the support body 29 in the shredder feed direction A, a receiving table 75 for receiving the packed shredder, And a supporting device 76 for supporting. Guide tube 74
Is bent such that the discharge port 74a faces substantially forward in the horizontal direction.

The support device 76 is mainly composed of a base member 80, a column member 81 extending upward from the rear end of the base member 80, and a hydraulic (or pneumatic) cylinder 82. An adjustment bolt 83 is provided on the base member 80, and the adjustment device 83
Height adjustment is possible. The cradle 75 is the guide cylinder 7
4 is disposed so as to protrude forward from the discharge port 74a, and the lower surface on the front end side of the receiving base 75 is rotatable around the left-right axis via the hinge 84 on the upper end side of the support member 81. And the hydraulic cylinder 82
Is interposed between the lower surface of the cradle 75 and the rear side of the base member 80, and the cradle 75 is vertically swingable by moving a cylinder rod of the hydraulic cylinder 82 forward and backward. The receiving table 75 is a storage bag 7 indicated by a solid line in FIG.
8 can be changed to a horizontal posture that supports the substantially horizontal state, and an inclined posture that is inclined downward and moves downward in the direction of discharging the shredder B as indicated by a virtual line in FIG. 11. .

A receiving plate 77 is provided on the front end side of the receiving table 75, and a storage bag for storing solidified shreds is located at a position away from the receiving plate 77 backward by a predetermined distance L. 7
8 is provided. The storage bag 78 is, as shown in FIG.
On the side a, the outlet 74a is fitted and set so as to close the discharge port 74a in a wrinkled and contracted state, and the cradle 75 is in a horizontal posture shown by a solid line in FIG.

The compressed and solidified shreds discharged from the guide cylinder 74 by being pushed by the subsequent shreds are stored in the storage bag 7.
By being inserted into the storage bag 8, the storage bag 78 gradually extends and is placed on the receiving table 75, and the shredder is automatically packed in the bag. At this time, a tensioning device 85 is provided on the guide cylinder 74 to apply tension to the storage bag 78. This tensioning device 85 is provided with a contact portion 87 on the distal end side of an arm portion 86 that can swing up and down, and as shown by a solid line in FIG. When the setting is performed and the storage bag 78 is set, the storage bag 78 is swung downward and the contact portion 87 presses the storage bag 78.

The pressing force with which the contact portion 87 presses the storage bag 78 includes the weight of the arm portion 86 and the contact portion 87,
It may be based on an urging force of a spring or an actuator such as a hydraulic cylinder. When the storage bag 78 is extended and the bottom of the storage bag 78 reaches the position of the sensor 79, it is detected that the storage bag 78 is full, and the operation of the shredding / compression solidifying device 1 is performed. Stop once.

As described above, the detection of the fullness of the storage bag 78 may be performed not only by detecting the length but also by detecting the weight. Next, as shown by an imaginary line in FIG. 11, the cylinder rod of the hydraulic cylinder 82 is retracted to
(For example, 35 ° with respect to the horizontal direction). Then, the storage bag 78 moves downward along the slope by the length L (for example, about 100 mm) until the storage bag 78 comes into contact with the receiving plate 77. Swarf cutting is performed.

That is, by inclining the receiving table 75, the shreds discharged from the guide cylinder 74
Is broken at the discharge port 74a, and the compressed and solidified shreds are separated into the guide cylinder 74 side and the storage bag 78 side, and the storage bag 78 moves downward along the slope, thereby compressing and solidifying. The shreds moved downward together with the storage bag 78.

At this time, the end opening side of the storage bag 78 externally fitted to the discharge side of the guide cylinder 74 still has room for extension.
Even if the storage bag 78 moves downward, the end opening side of the storage bag 78 remains in the form of an outer fitting on the discharge side of the guide cylinder 74.
Therefore, the shreds that are peeled when separating the compressed and solidified shreds are also stored in the storage bag 78, and the peeled shreds do not fall out.

Next, the end opening side of the storage bag 78 is pulled out from the guide cylinder 74 and then sealed. When the packaging device 4 is not provided, the packaging device 4 is discharged from the guide cylinder 74.
The compressed and solidified shreds may be directly received by the carrier of the transport vehicle, or a bag or container may be simply arranged such that one end of the bag faces upward, and the bag or the container is placed in the bag or the like. The shreds can be stored by falling from the guide cylinder 74.

As shown in FIG. 2, the lower wall 19a of the casing 19 of the screw extruder 15 is made of, for example, a fine mesh member, so that dust can pass therethrough. At the same time, the portion through which the dust can pass is covered by a cover body 88. One end of a duct 89 is connected to the cover 88, and the other end of the duct 89 is connected to the suction side of the blower 6. One end of another duct 90 is connected to the discharge side of the blower 6, and the other end of the duct 90 is connected to the input side of the dust collector 5.

Therefore, by operating the blower 6, the dust in the casing 19 is sucked and the dust collector 5 is sucked.
To be collected by the dust collector 5. When the dust collector 5 and the blower 6 are not provided, the lower wall portion of the casing 19 is formed so that dust cannot pass therethrough. The shredder 2, the compression / solidification device 3, the dust collector 5, and the blower 6 are housed in a cabinet 91. The cabinet 91 has a charging door 92, an inspection door 93, and a bag for collecting the dust collector 5. , A discharge door for discharging the dust from the dust collector 5, and the like.

FIGS. 13 to 15 show the second embodiment. The difference from the first embodiment is that a fixed amount of shredder is forcibly applied to the upper end of the guide tube 16. A shredder feeding device 94 for feeding is provided, and the shredder 2 (not shown) is connected to the upper end of the shredder feeding device 94 (in other words, the shredder discharge port 10a of the shredder 2).
And a supply port 23 of the casing 19 and a shredder feeding device 94 for feeding a predetermined amount of shredder into the casing 19).

The shredder feeding device 94 includes a case 95, a pair of left and right rotating drums 96, and feed blades 97 provided on the rotating drums 96. The upper end of the case 95 is formed as a supply port 95a, and the upper end of the case 95 is connected to the lower end of the shredder 2 so that the supply port 95a communicates with the shredder discharge port 10a of the shredder 2. The width of the lower part of the case 95 is narrower than the supply port 95a at the upper end, and the lower end of the case 95 is formed as a discharge port 95b. The lower end of the case 95 is connected to the upper end of the guide tube 16 so as to communicate with the upper end opening 16a of the case.

Each rotating drum 96 has a rotating shaft 98 in the front-rear direction.
The two rotating shafts 98 are linked to each other by a gear transmission mechanism 99. When one of the rotating shafts 98 is driven to rotate by a motor 100, the rotating drum 96 is moved in the direction indicated by an arrow in FIG. It is designed to be rotationally driven in the directions indicated by C1 and C2. A plurality of (four in the illustrated example) feed blades 97 are provided on each rotary drum 96 so as to protrude radially outward.
By being driven to rotate at a constant speed in the C1 and C2 directions,
Shreds discharged from the shredder 2 can be forcibly sent to the casing 19 of the screw extruder 15 by a fixed amount.

As in the first embodiment, the shredder 2
From the shell 1 of the screw extruder 15
9 is supplied to the screw extruder 15 because the shreds discharged from the shredder 2 have a large or small density depending on the portion. Although the amount of waste is not constant, as in the second embodiment, a shredder feed device 94 is provided to keep the shredder discharged from the shredder 2 constant in the casing 19 of the screw extruder 15. By forcibly feeding the amount, it is possible to stably feed the shredder by the screw extruder 15 and compress and solidify the shredder.

It should be noted that the present invention is not limited to the above embodiment, and the casing 1 is replaced with the shredder 2.
A dust collector for collecting fiber waste generated in a textile factory or the like may be provided above the fiber 9, and the fiber waste dropped and discharged from the dust collector may be compressed and solidified in the same manner as the shredder.

[0052]

According to the present invention, a screw extruder 15 provided with a feed screw 20 for feeding an object to be compressed in an axial direction is provided in a cylindrical casing 19, and an end of the casing 19 in the axial direction is provided. In the outlet 24, the shredder feed direction A
A compression solidification device that communicates with a cylindrical body 27 whose diameter gradually decreases as it goes toward and that divides the cylindrical body 27 into a plurality of pieces in the circumferential direction so that the discharge side of the object to be compressed can be radially expanded and contracted. In the above, a hydraulic cylinder 28 for pressing each component 27a of the cylindrical body 27 from the back is provided, and a hydraulic unit 18 for controlling the hydraulic cylinder 28 is provided.
The hydraulic unit 18 is provided with a pressure gauge 62 for measuring the pressing force of the hydraulic cylinder 28 and a pressure control valve 60 for adjusting the pressing force of the hydraulic cylinder 28. The adjustment of the applied pressing force can be performed relatively easily.

When a large load is applied to the screw extruder 15, a pressure reducing circuit 73 for reducing the pressing force of the hydraulic cylinder 28 to a predetermined pressing force is provided in the hydraulic unit.
When the load on the screw extruder decreases, the pressing force of the hydraulic cylinder 28 is controlled to increase to the pressing force set by the pressure control valve 60, thereby preventing the screw extruder 15 from overloading and preventing the cylindrical body from being overloaded. 27 can be prevented from being clogged on the discharge side, and the hardness of the compressed object can be made substantially constant.

When a large load is applied to the screw extruder 15, the pressing force of the hydraulic cylinder 28 is reduced to a predetermined pressing force. Responsiveness when increasing the pressing force to the pressing force set by the valve 60 is good, and stable operation can be performed. Further, when a large load is applied to the screw extruder 15, the pressing force of the hydraulic cylinder 28 is not reduced to zero, but is temporarily reduced by the pressure reducing circuit 73 to a predetermined pressing force. If the load on the screw extruder 15 does not decrease even after a predetermined period of time, the pressing force of the hydraulic cylinder 28 is released, and if the load on the screw extruder 15 decreases, the pressure control valve 60
By increasing the pressing force of the hydraulic cylinder 28 up to the pressing force set in the above, thorough measures against overloading of the screw extruder 15 and measures for preventing clogging of the cylindrical body 27 on the discharge side of the shredders are ensured. , And stable operation becomes possible.

[Brief description of the drawings]

FIG. 1 is an overall side view of a shredder and a compression solidification device according to a first embodiment.

FIG. 2 is an overall side view of the shredding / compression solidifying apparatus according to the first embodiment.

FIG. 3 is a side sectional view of a compression unit.

FIG. 4 is a sectional view taken along line EE of FIG. 5;

FIG. 5 is a rear view of the support.

FIG. 6 is a front view of a support.

FIG. 7 is a side sectional view of a tubular body.

FIG. 8 is a front view of a tubular body.

FIG. 9 is a sectional view taken along line FF of FIG. 4;

FIG. 10 is a hydraulic circuit diagram of a hydraulic unit.

FIG. 11 is a side view of the packaging device.

FIG. 12 is a front view of the packaging device.

FIG. 13 is a side view of a compression solidification device and a shredder feed device according to a second embodiment.

FIG. 14 is a front sectional view of a compression solidifying device and a shredder feed device.

FIG. 15 is a plan view of the shredder feeder.

[Explanation of symbols]

 15 Screw Extruder 18 Hydraulic Unit 19 Casing 20 Feed Screw 24 Outlet 27 Cylindrical Body 27a Structure 28 Hydraulic Cylinder 60 First Pressure Control Valve 62 Pressure Gauge 73 Pressure Reduction Circuit A Compressed Object Feeding Direction

Claims (3)

[Claims] 1. A screw extruder (15) having a feed screw (20) for feeding an object to be compressed in an axial direction is provided in a cylindrical casing (19), and an axial end of the casing (19) is provided. A cylindrical body (27) having a diameter gradually decreasing toward the compressed object feed direction (A) is communicated with the outlet part (24) of the part, and the cylindrical body (27) is divided into a plurality of circumferential bodies. By doing so, in a compression solidification device in which the discharge side of the object to be compressed can be freely expanded and contracted in the radial direction, a hydraulic cylinder (28) for pressing each component (27a) of the cylindrical body (27) from the back is provided. A hydraulic unit (18) for controlling the hydraulic cylinder (28) is provided, and the hydraulic unit (18) is provided with the hydraulic cylinder (2).
8) A compression solidification device comprising a pressure gauge (62) for measuring the pressing force and a pressure control valve (60) for adjusting the pressing force of the hydraulic cylinder (28). And a pressure reducing circuit (73) for reducing the pressing force of the hydraulic cylinder (28) to a predetermined pressing force when a large load is applied to the screw extruder (15). When the load on the machine (15) decreases,
2. The compression solidification apparatus according to claim 1, wherein the control is performed so as to increase the pressing force of the hydraulic cylinder (28) to the pressing force set by the pressure control valve (60). 3. A hydraulic cylinder (2) in a pressure reducing circuit (73).
8) After the pressing force is reduced to the predetermined pressing force, if the load on the screw extruder (15) does not decrease even after a predetermined time has elapsed, the pressing force of the hydraulic cylinder (28) is released. 3. The control system according to claim 2, wherein when the load on the screw extruder (15) decreases, the pressing force of the hydraulic cylinder (28) is increased to the pressing force set by the pressure control valve (60). Compression solidification equipment.