JPH0788464A - Screw extruder for fiber refuse - Google Patents

Abstract

PURPOSE:To continuously subject refuse to compression treatment in proper compression degree without generating clogging even when the amt. of the fiber refuse passing through a casing is changed. CONSTITUTION:In a screw extruder for fiber refuse equipped with a cylindrical casing having a fiber refuse outlet provided to the axial end part thereof and a fiber refuse supply port provided to the side part thereof and the feed screw inserted in the casing in a freely rotatable manner, a tapered cylindrical body 24 formed by bundling a plurality of trough members 27 in a mutually separable manner so as to oppose the insides thereof each other is provided on the outlet side of the casing and the spring means 34 energizing the respective trough members 27 of the cylindrical body 24 from the outer peripheral surfaces thereof toward the inner diameter direction of the cylindrical body 24 is provided.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a screw extruder for fiber waste.

[0002]

2. Description of the Related Art In a fiber factory for spinning, textile processing, papermaking, etc., a large amount of cotton wool, yarn waste, pulp fiber and the like (hereinafter simply referred to as fiber waste) is generated from a fiber processing machine. There is a dust collection facility that collects dust and discharges it outside the factory. Conventionally, in the final process of such dust collecting equipment, a dust collector consisting of a bag filter or the like to which fiber waste is supplied from above is arranged, and the fiber waste is stored in a detachable cotton bag below the dust collector. However, this requires a considerable amount of time and labor for exchanging the cotton-collecting bag, and at the time of exchanging it, there is a drawback that the fiber dust is scattered and the environment is damaged.

Therefore, a fiber waste hopper is connected to the lower part of the dust collector, and a fiber waste compressor is connected to the lower end discharge port of the hopper so that the fiber waste is hardened and discarded. A dust collection compression device has been proposed,
The compressor in this case is constructed by inserting a compression piston axially freely into and out of a cylinder which is connected to the lower end discharge port of the hopper and has an opening / closing valve on one side in the axial direction (JP-A-4-330981). (See Japanese Patent Publication).

[0004]

By the way, since the conventional compressor described above is one in which the fiber waste supplied into the cylinder is pushed out and hardened by the compression piston, the compression work becomes a batch work and the work efficiency is exclusively. Has the drawback of being bad. Therefore, in order to eliminate such inconvenience, in place of the above-mentioned piston extrusion type compressor, a screw feeder is rotatably provided in a cylindrical casing, and a screw extrusion equipped with a tapered cylindrical body at the tip of this casing. It is possible to adopt a machine.

However, when compressing fiber waste with such a screw extruder, the amount of fiber waste supplied from the hopper is not always constant, so excessive fiber waste may be supplied into the casing. The fiber waste may not be able to pass through the tubular body and may cause clogging in the casing. Then, once this clogging occurs, not only the entire apparatus must be stopped, but also much labor is required to remove the clogged fiber waste from the casing.

On the other hand, if the degree of squeezing of the tubular body is uniformly lowered in fear of the clogging of the fiber waste, the compressive force applied to the fiber waste becomes weak and the fiber waste after compression becomes exclusively bulky. In view of such circumstances, the present invention is a screw of a fiber waste that can continuously compress fiber waste at an appropriate compression degree without causing clogging even if the amount of fiber waste passing through the casing changes. It is intended to provide an extruder.

[0007]

[Means for Solving the Problems] In order to achieve the above object,
The present invention has taken the following technical means. That is, the invention according to claim 1 has a cylindrical casing having an outlet for fiber waste at an axial end and a supply port for fiber waste at a side portion, and a feed rotatably inserted in the casing. A screw extruder for fiber waste provided with a screw, wherein a tapered tubular body formed by bundling a plurality of gutter members so that they can be brought into contact with and separated from each other is provided on the outlet side of the casing. It is characterized in that spring means is provided for urging each gutter member of the cylindrical body from the outer peripheral surface thereof in the radial inward direction.

In addition to the above-mentioned structure, the invention according to claim 2 is characterized by further comprising adjusting means for adjusting the biasing force of the spring means.

[0009]

The fiber waste supplied into the casing 11 is discharged from the casing 10 by the feed screw 12.
And is compressed by receiving surface pressure from the inner surface of the tapered cylindrical body 24 during this transportation. At this time, the tubular body 24
Since each gutter member 27 is urged radially inward from the outer peripheral surface by the spring means 34, the outlet 10 of the casing 11
Even if an excessively large amount of fiber waste is conveyed, the gutter members 27 are opened radially outward, and the fiber waste is not clogged.

[0010]

Embodiments of the present invention will be described in detail below with reference to the drawings. 1 to 5, a dust collecting and compressing device 1 according to the present embodiment includes a pair of left and right dust collectors 2 each including a bag filter, a hopper 3 connected to a lower portion of the dust collector 2, and a lower end of the hopper 3. And a screw extruder 4 for connecting the fiber waste.

The pair of dust collectors 2 are formed by connecting the upper end of a vertically cylindrical filter portion 5 to a common supply case 6, and filter fiber dust supplied from a fan 7 provided in this supply case 6. 5, the air flow is separated from the carrier air flow, and only the fiber waste is discharged to the lower hopper 3. As the dust collector 2, a so-called cyclone mechanism may be used.

The hopper 3 is formed by forming a sheet metal member into a tapered cylindrical shape whose diameter gradually decreases from the upper end supply port 8 toward the lower end discharge port 9, and the lower end of the filter section 5 is connected to the upper end supply port 8. At the same time, the screw extruder 4 for fiber waste is connected to the lower end discharge port 9. The screw extruder 4 is configured by rotatably inserting a feed screw 12 into a tubular casing 11 having an outlet 10 for fiber waste at an end thereof, and is arranged so that its outlet 10 side is inclined upward. ing.

The casing 11 is provided with a parallel cylindrical portion 13 whose cross sections at arbitrary positions in the axial direction have substantially the same circular cross section. The parallel cylindrical portion 13 has a front end (on the outlet 10 side) for compressing fiber waste. The compression tubular member 15 is connected, and the drive unit 17 is connected to the rear end of the parallel tubular portion 13. The casing 11 is supported by a base 18 installed on the floor in a state where the axial center direction is inclined at an angle of about 40 degrees with respect to the horizontal.

The lower end discharge port 9 of the hopper 3 is formed in an inclined shape corresponding to the casing 11, and the lower end discharge port 9 is provided with a square-shaped supply port 19 provided on the upper side surface of the parallel cylindrical portion 13. It is connected. Drive unit 1 of casing 11
A drive motor 21 is fixed to a side surface of a bearing 20 that rotatably supports a shaft portion 22 of the feed screw 12. The bearing 20 is internally provided with a reduction gear mechanism that reduces the rotational force of the drive motor 21 and transmits the rotational force to the feed screw 12.

The feed screw 12 is formed by surrounding a spiral feed blade 23 from the peripheral surface of a metal shaft portion 22, and the base end portion of the shaft portion 22 is inserted into a bearing 20 so that the inside of the casing 11 is closed. It is supported in a cantilevered manner.
The tip of the feed screw 12 is the casing 11
Is extended to a position reaching the outlet 10 and is rotated around the shaft portion 22 in a certain direction to convey the fiber waste supplied into the casing 11 to the outlet 10 side.

The feed blade 23 of the feed screw 12 is formed such that the outer peripheral edge thereof is close to the inner surface of the casing 11 with a slight gap. As shown in FIG. 1, the compression tubular member 15 on the outlet 10 side of the casing 11
Is a tapered tubular body 24 connected to the outlet 10 of the casing 11, and an outer tubular body 25 that covers the outer periphery of the tubular body 24.
And a transfer cylinder 26 connected to the tip of the outer cylinder 25.

As shown in FIG. 3, the tubular body 24 has a tapered shape by bundling four gutter members 27 so that their insides face each other so that they can come in contact with and separate from each other. Each of the gutter members 27 is formed by fixing an arcuate band-shaped mounting flange 29 to the outer peripheral edge of the base end part of a tapered gutter part 28 in which both left and right edges are tapered and cut. A fixing flange 30 for connecting the outer tubular body 25 to the casing 11 is formed at the base end opening edge of the outer tubular body 25.
0 is a mounting ring 31 provided at the outlet 10 of the casing 11.
It is bolted to.

Each gutter member 27 is swingably attached to the base end edge of the outer cylindrical body 25 by sandwiching the mounting flange 29 between the mounting ring 31 and the fixed flange 30, and thus each gutter member. The members 27 can be brought into and out of contact with each other within the outer tubular body 25. In addition, 32 is a spacer ring made of rubber, and together with the mounting flange 29, the mounting ring 3
1 and the fixed flange 30.

At four locations on the outer peripheral surface of the outer cylindrical body 25 in the circumferential direction,
A bottomed tubular storage cylinder 33 whose axial center is directed in the radial direction of the outer tubular body 25 is fixed, and the gutter members 27 of the tubular body 24 are provided in the storage cylinder 33. A coil spring (spring means) 34 that is biased radially inwardly is housed. That is, each of the storage cylinders 33 is welded to the outer peripheral surface of the outer tubular body 25 so that the inner opening portion thereof communicates with the inside of the outer tubular body 25 and corresponds to the center of the outer surface of each gutter member 27. By pressing the inner end portion of the coil spring 34 interposed in the storage cylinder 33 to the center of the outer surface of each gutter member 27, each gutter member 27 is urged radially inward.

Further, each storage cylinder 33 is provided with an adjusting means 35 for adjusting the urging force of the coil spring 34 to each gutter member 27. This adjusting means 35 is used for the storage cylinder 3.
The bottom plate 36 of No. 3 is provided with a tightening bolt 38 tapped through a nut 37, and a pressing plate 39 fixed to the inner end of the tightening bolt 38. In this case, the tightening bolt 38 of the outer cylinder 25 is provided. The biasing force of the coil spring 34 can be adjusted by moving the coil spring 34 in the radial direction to change the length of the coil spring 34.

Next, the operation of the dust collecting and compressing device having the above structure will be described. The air containing the fiber dust sent from the dust collector (not shown) is supplied to the upper part of the dust collector 2 by the fan 7, and only the fiber dust is separated by the filter portion 5 and drops downward to be collected in the hopper 2. The separated fiber waste is supplied into the casing 11 of the screw extruder 4.

The fiber waste supplied into the casing 11 is
It is forcibly conveyed to the outlet 10 side by the feed screw 12, compressed radially inward by each gutter member 27 when passing through the tubular body 24, and then discharged from the tip of the transport tubular body 26 and installed below it. It will be accommodated in the container 44. In this case, since the screw extruder 4 is disposed so as to be inclined at about 30 degrees so that the outlet side thereof faces upward, the relatively long screw extruder 4 with the transport cylinder 26 is adopted, Therefore, the width of the dust collection compression device 1 is not increased.

Further, since the outlet side of the screw extruder 4 can be arranged above the lower end of the hopper 3 and a height space for placing the container 40 in front of the outlet of the screw extruder can be ensured, the dust collecting compressor 1 The height can be made compact. Further, according to this embodiment, each gutter member 2 of the tubular body 24 is
Since the coil spring 34 is urged radially inward from the outer peripheral surface by the coil spring 34, when the excessive fiber waste is conveyed to the outlet 10 of the casing 11, the respective gutter members 27 open outward in the radial direction and the fiber waste is discharged. Will not be clogged.

Further, in this embodiment, since the adjusting means 35 for adjusting the urging force of the coil spring 34 is provided, when the compression degree of the fiber waste is insufficient, the fiber tightening bolt 38 is tightened to compress. If there is a possibility that clogging may occur due to excessive tightening, the tightening bolt 38 may be loosened to weaken the biasing force of the coil spring 34. In addition, in the embodiment described above, the four gutter members 27 are bundled to form the tubular body 24, but the number of the gutter members 27 is not limited to four.

[0025]

As described above, according to the present invention,
Each gutter member 27 of the tubular body 24 is urged radially inward from the outer peripheral surface by the spring means 34, whereby the casing 1
Even if excessive fiber waste is conveyed to the outlet 10 of each of the gutter members 2
Since 7 opens in the radial direction, the fiber waste can be continuously compressed at an appropriate degree of compression without causing clogging of the fiber waste.

According to the second aspect of the invention, since the urging force of the spring means 34 can be adjusted by the adjusting means 35, the degree of compression of the fiber waste can be appropriately changed, and
It is possible to prevent clogging from occurring.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a tip portion of a screw extruder.

FIG. 2 is a cross-sectional view of an outer cylinder body.

FIG. 3A is a side sectional view of a tubular body, and FIG. 3B is a front view of the same.

FIG. 4 is a front view of the dust collecting compression device.

FIG. 5 is a side view of the same.

[Explanation of symbols]

 4 Screw Extruder 10 Outlet 11 Casing 12 Feed Screw 19 Supply Port 24 Cylindrical Body 27 Gutter Member 34 Spring Means (Coil Spring) 35 Adjusting Means

Claims (2)

[Claims] 1. A tubular casing (11) having a fiber waste outlet (10) at its axial end and a fiber waste supply port (19) at its side, and inside this casing (11). A screw extruder for fiber waste, which is provided with a feed screw (12) rotatably inserted therein, and has a tapered shape formed by bundling a plurality of gutter members (27) with their insides facing each other so that they can come in contact with and separate from each other. A tubular body (24) is provided on the outlet (10) side of the casing (11), and a spring means (for biasing each gutter member (27) of the tubular body (24) radially inward from its outer peripheral surface ( 34) is provided, and the screw extruder of a fiber waste is provided. 2. The screw extruder for fiber waste according to claim 1, further comprising adjusting means (35) for adjusting the biasing force of the spring means (34).