JP3368075B2 - Sheet material cleaning device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material cleaning device for cleaning sheet material such as cloth and paper.

[0002]

2. Description of the Related Art For example, a sheet material washing apparatus used for washing cloth which has been subjected to smelting, bleaching, dyeing and printing, and talc coated paper which has been subjected to a coating treatment is shown in FIG. There is. In this sheet material cleaning apparatus, a rotating body 2 formed in a petal shape in vertical section is rotationally driven around a horizontal axis in a cleaning tank 1 filled with water. Further, the outer circumference of the rotating body 2 is surrounded by a cylindrical casing 3 having a peripheral wall (hereinafter referred to as “perforated peripheral wall”) having a large number of small holes formed therein, and further, the outer periphery of the casing 3 has a perforated peripheral wall. It is surrounded by a cylindrical basket 4. The casing 3 is fixed to the side wall of the cleaning tank 1, but the basket 4 is rotatably supported with respect to the cleaning tank 1. 5 is a water supply pipe that constantly supplies water to the cleaning tank 1, 6 is a drainage port for discharging overflowed water, 7
Indicate guide rollers, respectively.

In this sheet material cleaning device, water is discharged to the outside from the small holes of the casing 3 and the basket 4 at the portion where the convex portion of the peripheral surface of the rotating body 2 is approaching, and small at the portion where the concave portion is approaching. The water is sucked in through the holes, and the water is flowing in a state where the discharge and the suction are repeated at an extremely short cycle as the rotating body 2 rotates at high speed (see FIG. 7). . Then, as shown in FIG. 6, the sheet material A is laid over each guide roller 7 and the basket 4, and is wound up by a winding roller (not shown) provided on the downstream process side, and the sheet material A is in contact with each guide. The roller 7 and the basket 4 are conveyed in the direction of the arrow while rotating, and are effectively washed by the water that is made to flow as described above.

The specific structure of the main part of this sheet material cleaning device is, for example, as shown in FIG. 8, and brackets 8a and 8b are provided on the outer sides of the opposite side walls 1a and 1b of the cleaning tank 1.
The bearings 9a and 9b are attached via the
Both ends of the rotary shaft 10 are pivotally supported by bearings 9a and 9b, and are rotationally driven by a motor (not shown). Further, from the side walls 1a and 1b, the cylindrical body 11
a and 11b are provided so as to project inward, and both ends of the casing 3 are inserted into the cylindrical bodies 11a and 11b and are fixed to the inner peripheral surface thereof.

Further, reinforcing rings 12a and 12b having an L-shaped cross section are provided around both ends of the basket 4, and each of the reinforcing rings 12a and 12b has eight bearings 13 at equal intervals in the circumferential direction. Is attached to. The basket 4 is rotatably supported in the circumferential direction by the bearings 13 that roll while being in contact with the outer peripheral surfaces of the cylindrical bodies 11a and 11b. In addition, 14a, 14
Reference numeral b is a mechanical seal provided between the side walls 1a and 1b and the rotary shaft 10 to prevent water leakage.

[0006]

In the above-described conventional sheet material cleaning apparatus, the weight of the basket 4 imposes a large load on the bearing 13, and therefore the bearing 13 is used.
Since it had a short life, it had to be replaced frequently, and the maintenance of the device was troublesome.

Further, due to the bearing 13, the resistance of water accompanying the rotation of the basket 4 increases, so that the tension applied to the sheet material becomes large and the sheet material is easily damaged. In particular, when the transport speed of the sheet material is high and the basket 4 rotates at a high speed, the resistance of water becomes large, and this defect becomes more remarkable.

The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a sheet material cleaning apparatus which does not require much maintenance for the apparatus. In addition to the above-mentioned object, it is another object of the present invention to provide a sheet material cleaning device in which the tension applied to the sheet material is small.

[0009]

In order to achieve the above object, the present invention provides a cleaning tank containing a cleaning liquid with a cylindrical basket having a perforated peripheral wall, with supporting members provided at both ends thereof. Rotatably support the cleaning tank,
In a sheet material cleaning device for cleaning a sheet material that is conveyed while being wound around the outer peripheral wall of the basket with a cleaning liquid that is made to flow by a liquid flow generating means provided in the basket, the load applied to the support member by the basket. The buoyancy imparting means for reducing the above is provided.

In addition to the above-mentioned structure, the supporting member has a structure in which sliding members are annularly provided at both ends of the basket.

Further, in the sheet material cleaning device,
A cylindrical body is provided so as to project inwardly from opposite side walls of the cleaning tank, and the peripheral surface of the cylindrical body and the sliding member are in sliding contact with each other. A concave groove that engages with a member is provided around the groove.

In the present invention, the "sheet material" includes cloth, paper, film, and other sheet-like materials, and the "cloth" includes woven cloth, knitted cloth, and non-woven cloth. Threads arranged in a sheet shape and a plurality of thread bundles arranged in the lateral direction are also included.

Further, in the present invention, the "liquid flow generating means" means that the cleaning liquid is discharged to the outside of the basket through the holes of the porous peripheral wall of the basket, is sucked into the inside of the basket, or is discharged and sucked. It means a means of producing a flow such as being repeated in a short cycle. The liquid flow generating means is not particularly limited, but it is conceivable, for example, to rotate a rotating body having a non-circular cross section by providing stirring blades, ridges, etc. around the basket. It is also possible to use a screw or an axial flow pump to flow the cleaning liquid.

[0014]

In the sheet material cleaning apparatus according to the present invention, the buoyancy generated by the buoyancy imparting means in the cleaning liquid serves to reduce the weight of the basket, so that the load applied to the support member is reduced and therefore the life of the support member is extended. Become.

Further, in the case where the supporting member has a structure in which sliding members are annularly provided at both ends of the basket, the resistance of water due to the rotation of the basket is reduced.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a sheet material cleaning apparatus according to an embodiment of the present invention. In the present embodiment, the perforated peripheral wall of the basket 4 is
Annular hollow bodies (an example of buoyancy imparting means) 15a and 15b are provided in the vicinity of both ends where small holes are not formed.
The annular hollow bodies 15a and 15b are formed by externally fitting an annular metal member having a U-shaped cross-section to the basket 4 and welding the inner peripheral edge of the annular metal member to the basket 4. It is housed in. In addition, the annular hollow body 15
A hole 17 for gas filling, which is normally closed by a screw 16, is provided at one location of the outer peripheral wall of a, 15b. In the present embodiment, the sheet material is conveyed while being wound around the outer peripheral surface of the porous peripheral wall of the basket 4 between the annular hollow bodies 15a and 15b.

The structure other than the annular hollow bodies 15a and 15b is the same as that of the conventional example shown in FIG. 8, and the rotary body 2 formed in a petal shape in vertical section is an example of the liquid flow generating means in the present invention. In the sheet material cleaning apparatus of the present embodiment configured as described above, when the cleaning tank 1 is filled with water (an example of the cleaning liquid), the buoyancy of the annular hollow bodies 15a and 15b acts to reduce the weight of the basket 4. Therefore, the load applied to the bearing (an example of a support member) 13 is reduced. Therefore, the life of the bearing 13 is extended and the frequency of replacement can be reduced, so that the maintenance of the device can be made less laborious, the labor cost therefor can be reduced, and the operating rate of the device can be improved. It will be possible.

Although it is desirable that the buoyancy of the annular hollow bodies 15a and 15b be equal to the weight of the basket 4 as a whole, the functions and effects of the present invention can be obtained even if the buoyancy is not necessarily equal. Further, in order to further reduce the load applied to the bearing 13, it is conceivable to fill the annular hollow bodies 15a and 15b with a gas having a specific gravity smaller than that of air, such as helium, from the gas filling hole 17 to seal the gas.

2 to 5 show another embodiment of the present invention. In this embodiment, as a support member replacing the bearing 13, the reinforcing rings 12a and 12b of the basket 4 are provided with sliding members 18 made of engineering plastic, respectively.

The sliding member 18 on the reinforcing ring 12a side is shown in FIG.
As shown in, it has an annular shape divided into two in the circumferential direction,
It is fixed to the reinforcing ring 12a by screws 19. The cross-sectional shape of the sliding member 18 is substantially L-shaped with an inwardly facing flange portion 20 as shown in FIG.
The sliding member 18 is slidable in the circumferential direction with respect to the cylindrical body 11a in a state where the inner peripheral end of the flange portion 20 is fitted into the concave groove 21 provided around the outer peripheral surface of the cylindrical body 11a. Has become.

The sliding member 18 on the reinforcing ring 12b side
Is also configured similarly to the above, but as shown in FIG.
No concave groove is formed on the outer peripheral surface of the cylindrical body 11b. With this configuration, the basket 4 can be positioned in the cylinder center direction, and the basket 4 can be allowed to expand and contract in the cylinder center direction due to temperature changes.

Sliding member 18 and cylindrical bodies 11a and 11b
The configuration other than that is the same as that of the above-described embodiment shown in FIG. 1, and in the sheet material cleaning apparatus of the present embodiment having such a configuration, the sliding member 18 has an annular shape, so that the basket 4 is rotated. The resistance of water is reduced as compared with the above-described embodiment, so that the tension applied to the sheet material is reduced and the risk of damaging the sheet material is reduced. Further, even if the basket 4 rotates at a high speed, the resistance of water does not increase so much, so that it is possible to increase the conveying speed of the sheet material as compared with the above embodiment.

By the way, in the conventional sheet material cleaning apparatus which is not provided with the buoyancy imparting means, a bearing capable of withstanding a large load has to be used as the supporting member, but in the present invention, the load can be reduced by the buoyancy imparting means. Therefore, the configuration of this embodiment is also possible.

The material and shape of the sliding member 18 are not limited to those in this embodiment, and the sliding member 18 may be made of ceramic such as zirconia or resin such as ethylene tetrafluoride. . Further, in this embodiment, the inward flange portion 20 is formed on the sliding member 18 to form the cylindrical bodies 11a, 11a.
Although the outer peripheral surface of b is slidably contacted, the flange portion 20 may be formed outward and slidably contact the inner peripheral surfaces of the cylindrical bodies 11a and 11b. Further, the shape of the portion that receives the sliding member 18 is not limited to the cylindrical shape.

The buoyancy imparting means may be, for example, an annular rubber tube, or a member having a small specific gravity such as styrofoam may be processed into an appropriate shape and attached to the basket 4. Further, the buoyancy imparting means may be provided at any position. In the above-described embodiment, the buoyancy imparting means is provided near both ends of the outer surface of the peripheral wall of the basket 4. However, for example, in the case of a sheet material cleaning device having no casing 3, Buoyancy imparting means may be provided on the inner surface of the peripheral wall.

Further, the sheet material cleaning apparatus to which the present invention is applied is not limited to the embodiment. For example, in the above embodiments, the basket 4 is driven and rotated by the conveyed sheet material. The present invention can also be applied to a sheet material cleaning device that rotationally drives No. 4 by power, and further, the present invention can be applied to a sheet material cleaning device that uses a liquid other than water as the cleaning liquid. is there.

[0027]

As described above, in the sheet material cleaning apparatus according to the present invention, the buoyancy generated by the buoyancy imparting means in the cleaning liquid acts to reduce the weight of the basket.
The load on the support member is reduced. Therefore, the life of the supporting member is extended, the frequency of exchanging the supporting member can be reduced, and the maintenance of the device can be saved.
Therefore, labor costs can be reduced and the operating rate of the device can be improved.

Further, in the case where the support member is constituted by providing the sliding members in an annular shape at both ends of the basket, the resistance of water due to the rotation of the basket is reduced and the tension applied to the sheet material is reduced. Therefore, in addition to the above-described effects, the risk of damaging the sheet material is reduced. Further, even if the basket rotates at a high speed, the resistance of water does not increase so much, so that it becomes possible to increase the transport speed of the sheet material as compared with the conventional case.

Further, in a structure in which a cylindrical body is provided so as to project inwardly from the opposite side walls of the cleaning tank, and the peripheral surface of the cylindrical body and the sliding member are in sliding contact with each other, In the sheet material cleaning device in which a concave groove that engages with the sliding member is provided on the peripheral surface, the sheet material cleaning device has a simple structure to position the basket in the cylinder center direction, and to adjust the basket cylinder direction in accordance with the temperature change of the cleaning liquid. Can be allowed to expand and contract.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a sheet material cleaning device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of a sheet material cleaning device according to another embodiment of the present invention.

FIG. 3 is an enlarged sectional view of an essential part showing a sliding member.

FIG. 4 is an enlarged sectional view of an essential part showing a sliding member.

FIG. 5 is a side view showing a sliding member.

FIG. 6 is an operation explanatory view of the sheet material cleaning device.

FIG. 7 is an operation explanatory view of the sheet material cleaning device.

FIG. 8 is a cross-sectional view of essential parts of a sheet material cleaning device according to a conventional example.

[Explanation of symbols]

1 cleaning tank 2 Rotating body (an example of liquid flow generating means) 4 baskets 11a, 11b cylindrical body 13 Bearing (an example of support member) 15a, 15b Annular hollow body (an example of buoyancy imparting means) 18 Sliding member (an example of a supporting member) 21 groove

Claims (3)

(57) [Claims] 1. A cylindrical basket having a porous peripheral wall is rotatably supported with respect to the cleaning tank via support members provided at both ends thereof in the cleaning tank containing the cleaning liquid.
In a sheet material cleaning device for cleaning a sheet material, which is conveyed while being wound around the outer peripheral wall of the basket, by a cleaning liquid that is made to flow by a liquid flow generating means provided in the basket, a load applied to a supporting member by the basket. A sheet material cleaning device, characterized in that a buoyancy imparting means for reducing the above is provided. 2. The sheet material cleaning apparatus according to claim 1, wherein the support member is formed by providing sliding members annularly on both ends of the basket. 3. The sheet material cleaning apparatus according to claim 2, wherein cylindrical bodies project inwardly from opposite side walls of the cleaning tank, and the peripheral surface of the cylindrical body slides against the sliding member. A sheet material cleaning device configured to come into contact with each other, in which a concave groove that engages with a sliding member is provided around a peripheral surface of one cylindrical body.