JP3236699B2 - Rotary drum type washing 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 rotary drum type cleaning apparatus for cleaning an object to be cleaned such as a metal workpiece, and more particularly to a cleaning step using a shower of a cleaning liquid, a subsequent rinsing step, a drying step and the like. And a cleaning device for continuously performing the process in a rotating drum.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for cleaning an object to be cleaned such as a metal work part with oil by press working,
Rotary drum type washing devices are known. This device includes a horizontally extending rotating drum, which has a cylindrical outer peripheral wall with countless holes and a spiral fin fixed to the inner surface thereof. When the rotating drum rotates, the object to be cleaned introduced from one end of the drum is spirally conveyed to the other end by the action of the spiral fin, and at this time the cleaning liquid is sprayed from a cleaning liquid injection nozzle provided inside or outside the rotating drum. By being
Washed continuously.

[0003] In this type of apparatus, in addition to the cleaning process,
In some apparatuses, processes such as a drying process and a rinsing process are continuously performed. In such an apparatus, each process is partitioned in one drum, and each process is performed. In this case, in the vicinity of the boundary between the processes, an adjacent process affects the other process, which may cause a problem. For example, if the processing liquid in the step adjacent to the drying step is scattered, the drying efficiency is reduced. Further, if the processing liquid is mixed when the cleaning step and the rinsing step are adjacent to each other, the recycling efficiency of the processing liquid is reduced.

If the distance between the steps is increased in order to prevent such a problem from occurring, the size of the apparatus becomes large, which is not practical. Therefore, an apparatus having a partition between processes has been proposed.

For example, in the cleaning apparatus disclosed in Japanese Utility Model Publication No. 57-36351, a cleaning step of spraying the cleaning liquid in the first half of the rotating drum and a rinsing step of spraying the rinsing liquid in the second half are performed. In this apparatus, the supply pipe for the processing liquid to be sprayed is provided continuously in the center penetrating portion formed by the inner peripheral edge of the spiral fin of the rotary drum throughout the process, so that the partition does not interfere with the supply pipe. An air curtain is provided.

However, since the air curtain is not rigid, vigorous droplets and large droplets break through the air curtain and are not perfect partitions, and cannot completely prevent the processing liquids from being mixed in both processes. .

In order to partition by a rigid body instead of the air curtain, it is necessary to eliminate the clearance between the inside of the rotating drum that is rotating and the stationary supply pipe therein at the boundary of the process. It is necessary to keep a space through which the transferred object passes. Therefore, it is not easy to completely separate the steps without obstructing the feeding of the object to be cleaned.

[0008]

SUMMARY OF THE INVENTION Accordingly, a technical problem to be solved by the present invention is to provide a rotary drum type cleaning apparatus for continuously processing a plurality of processes with one rotary drum. It is an object of the present invention to completely separate the steps without hindering the transport and without increasing the size of the apparatus, so that the influence of the other processing does not affect each other between the steps.

[0009]

Means for Solving the Problems and Functions / Effects In order to solve the above technical problems, a rotary drum type cleaning apparatus according to the present invention is configured as follows.

That is, a rotary drum having a cylindrical drum body having an infinite number of holes in a cylindrical surface, and a spiral fin spirally fixed concentrically and coaxially with the drum body on the inner surface of the drum main body extends in the horizontal direction. There are at least one washing step along the extending direction of the rotating drum, and subsequent steps such as a rinsing step and a drying step, and the objects to be washed introduced from one end of the rotating drum are sequentially processed. And discharged from the other end. At the boundary of the above process, partition plate means is provided on the inner peripheral edge of the spiral fin over one or more spans of the spiral fin, so that the central penetration formed by the inner peripheral edge of the spiral fin is blocked by the partition plate means. Is configured.

In the above configuration, as described above, the central through portion is blocked by the partition plate means. Further, at the boundary between the processes, the portion between the inner surface of the drum main body and the outer surface of the partition plate means is blocked in the axial direction by the spiral fins that exist for one span or more, that is, for one rotation or more. The partition plate means and the spiral fin are both rigid bodies and, unlike an air curtain, can reliably partition between processes. Therefore, at the boundary between the steps of the rotating drum,
Neighboring steps do not directly affect the other axially.

On the other hand, no obstacle is provided in the groove between the spiral fins, which is the transfer passage of the object to be cleaned, so that the spiral transfer of the object to be cleaned is not hindered. In addition, it is sufficient that the partition plate means is one span or more of the spiral fin, so that the size of the apparatus is not increased.

In the above configuration, when the supply pipe for supplying the processing medium of the process passes through the partition plate means and the central through portion, the partition plate means is fixed to the outer periphery of the supply pipe at the boundary of the process. It is composed of at least one partition disk, a partition cylinder fixed to the inner peripheral edge of the spiral fin, and an annular partition plate fixed to the inner surface of the partition cylinder close to and facing the partition disk. At this time,
If the partition disk attached to the supply pipe and the corresponding annular partition plate form a labyrinth seal, the annular partition plate and the partition disk inside the partition cylinder can be penetrated even if the supply pipe penetrates. It is possible to partition between processes.

Further, when the supply pipe does not penetrate the boundary between the steps, for example, when the supply pipe is supported on only one side or when the processing mechanism of the step is provided only outside the rotary drum, the spiral is used. If the partition plate means is constituted by the partition cylinder fixed to the inner peripheral edge of the fin and the partition disk fixed to the inner peripheral surface of the partition cylinder, the process can be similarly partitioned. Here, if the thickness of the partition disk is made the same as that of the partition cylinder, it becomes substantially the same as using a solid cylinder as the partition plate means.

Further, in the case where the cleaning liquid is also sprayed from the outside of the rotary drum, in addition to the above-described configuration, the rotary drum is housed in an apparatus casing, and has a receiving tray below the rotary drum for receiving the cleaning liquid. At the border between
It is preferable that at least one outer partition plate that partitions a space formed by the rotating drum, the casing, and the tray is further provided. With this configuration, the influence of the adjacent process is not exerted from the outside of the rotary drum, and the process can be more completely partitioned.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rotary drum type cleaning apparatus 1 according to an embodiment of the present invention shown in FIGS.

First, a first embodiment of the present invention shown in FIGS. The present embodiment relates to a rotary drum type cleaning apparatus 1 in which a plurality of steps of a cleaning step A and a drying step B are continuously processed by one rotary drum 10.

As shown in FIG. 1, a rotary drum type cleaning apparatus 1 according to this embodiment includes a rotary drum 10 in a casing 2.
Is stored. The rotating drum 10 extends in the horizontal direction, and a belt conveyor 3 and a charging chute 4 are provided at one end thereof, and a cleaning object is charged. Rotating drum 10
A discharge chute 5 is provided on the other end side of the device to collect an object to be cleaned. A receiving tray 61 and a cleaning liquid tank 60 are provided below the rotating drum, and the cleaning liquid is collected, filtered, and then circulated and reused.

The rotating drum 10 is supported by a supporting roller 17 supporting a supporting flange 16 of the rotating drum 10. A sprocket 18 is engaged with a hole 19 formed in the flange portion of the rotating drum 10, and is driven by driving means (not shown). Rotated.

The drum main body 11 of the rotary drum 10 has a cylindrical shape, and has an infinite number of holes (not shown) smaller than the object to be cleaned on the cylindrical surface. On the inner surface of the drum main body 11, a spiral fin 12 is fixed concentrically with the drum main body 11 and spirally in a coaxial direction. The rotary drum 10 is divided into a washing step A and a drying step B, and a partition plate means 20 and an outer partition plate 62 are provided at a boundary between the two.

In the cleaning step A, the cleaning liquid injection nozzle 33 of the upper cleaning liquid supply pipe 31 provided inside the rotary drum 10
The cleaning liquid that is sprayed from the cleaning drum and reaches the object to be cleaned, and the cleaning liquid spray nozzle 33 of the lower cleaning liquid supply pipe 32 provided below the outside of the rotary drum 10 is sprayed to form a hole (not shown) in the cylindrical surface of the drum main body 11. The object to be cleaned is washed with the cleaning liquid that passes through the object to be cleaned. In the drying step B, the air injection nozzles 43 of the upper air supply pipe 41 and the lower air supply pipe 42 provided inside and outside the rotary drum 10 are provided.
The object to be cleaned is dried by the air jetted from the nozzle.

As shown in FIG. 2, the upper cleaning liquid supply pipe 31 and the upper air supply pipe 41 are provided in the central through-hole 14 formed by the inner peripheral edge 13 of the spiral fin 12, and are joined by the joining flange 26. , Between the cleaning step A and the drying step B. The partition plate means 20 includes a pair of partition disks 25 fixed to the outer periphery of the upper cleaning liquid supply pipe 31 and the upper air supply pipe 41, respectively, and a partition cylinder 21 fixed to the inner peripheral edge 13 of the spiral fin 12.
And the partition cylinder 21 approaching and facing the partition disk 25.
And an annular partition plate 22 fixed to the inner surface of
The partition disk 25 and the annular partition plate 22 form a labyrinth seal.

The length of the partitioning cylinder 21 in the axial direction is not less than one span of the spiral fin, that is, not less than the length of the spiral fin in the axial direction corresponding to one rotation. Fixed. Therefore, the space formed between the inner surface of the drum main body 11 and the outer surface of the partition cylinder 21 is completely shut off by the spiral fins 12 in the axial direction of the rotary drum 10. However, since no obstacle is provided in the space formed between the inner surface of the drum main body 11 and the outer surface of the partition cylinder 21, the spiral conveyance of the object to be cleaned is not hindered at all. On the other hand, since the annular partition plate 22 and the partition disk 25 form a labyrinth seal in the inner portion of the partition cylinder 21, there is substantially no clearance, and thus the partition is completely shut off.

As shown in FIGS. 1 and 3, the rotating drum 1
A pair of external partition plates 62 is provided in a space formed by the casing 0, the casing 2, and the tray 61, at a boundary between the processes, close to the outer peripheral surface of the drum body 11. The outer partition plates 62 are spaced by a distance corresponding to one span of the spiral fin 12. Thereby, the space formed by the rotating drum 10, the casing 2, and the receiving tray 61 is also partitioned, and the influence of an adjacent process from the outside of the rotating drum 10 is not affected. In this embodiment, a pair of external partition plates 62 are provided to enhance the partitioning effect between processes. However, as shown by a two-dot chain line in FIG. 1, a single external partition plate 62 'can be used. is there. In addition,
As shown in FIG. 3, the lower part of the outer partition plate 62 is
And a gap 63 is provided between them, so that the cleaning liquid dropped in the drying step B flows.

With the above configuration, the washing step A and the drying step B are practically completely separated from each other without hindering the spiral conveyance of the object to be washed and without increasing the size of the apparatus. There is no problem of being affected by the processing of the process.

In the above embodiment, the supply pipes 31 and 41 penetrate the boundary between the steps, but the second embodiment in which the supply pipes 31 and 41 do not penetrate next. FIG. 4 shows a main part of a rotary drum type cleaning apparatus according to the second embodiment. In this embodiment, neither the upper cleaning liquid supply pipe 31 nor the upper air supply pipe 41 penetrates the boundary between the cleaning step A and the drying step B. The partitioning means 20 includes a partitioning cylinder 21 fixed to the inner peripheral edge of the spiral fin, and a partitioning disk 23 fixed to the inner peripheral surface of the partitioning cylinder 21. As described above, the spiral fin 12 is fixed to the inner peripheral edge 13 and, like the first embodiment, is completely shut off between the steps.

Although the rotary drum of the above embodiment is divided into two steps, the third embodiment is divided into three steps. FIG. 5 shows a main part of a rotary drum type cleaning apparatus according to the third embodiment. In this embodiment, a rinsing step C is provided between the cleaning step A and the drying step B. The partitioning means 20 between the steps includes a cleaning / rinsing partition member 27 at the boundary between the cleaning step A and the rinsing step C, and a rinsing / drying partition member 28 at the boundary between the rinsing step C and the drying step B.
Each is provided. The washing / rinsing partition member 27 and the rinsing / drying partition member 28 include a partition disk 25 fixed to the outer circumference of the upper cleaning liquid supply pipe 31 and the upper rinse liquid supply pipe 51, and the spiral fin 12 as in the first embodiment. A partition cylinder 21 fixed to the inner peripheral edge 13 over one span or more, and an annular partition plate 22 fixed to the inner surface of the partition cylinder 21 so as to approach and face the partition disk 25.
And the partition disk 25 and the annular partition plate 2
2 form a labyrinth seal, and the process is completely shut off as in the above embodiment.

The present invention is not limited to the above embodiments, but can be implemented in other various modes. For example, in the above-described embodiment, the rotating drum 10 extends in the horizontal direction, but may be slightly inclined. Further, another step may be provided before the cleaning step A. Further, even if the drying step B is performed by, for example, irradiating heat rays, by applying the same partition plate means 20, it is possible to prevent the influence of the other processing from affecting each other between the steps.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of an entire rotary drum type cleaning apparatus according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG. The partition means is shown in detail.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is an enlarged view of a main part of a rotary drum type cleaning apparatus according to a second embodiment of the present invention. As in FIG. 2, the partition means is shown in detail.

FIG. 5 is a partially broken side view of a rotary drum type cleaning apparatus according to a third embodiment of the present invention. The rotating drum is shown in detail.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Washing device 2 Casing 3 Belt conveyor 4 Charging chute 5 Discharge chute 10 Rotary drum 11 Drum main body 12 Spiral fin 13 Inner peripheral edge 14 Central penetration part 16 Support flange 17 Support roller 18 Sprocket 19 Hole 20 Partition plate means 21 Partition cylinder 22 Plate 23 Partition disk 25 Partition disk 26 Joining flange 27 Cleaning / rinsing partition member 28 Rinsing / drying partition member 31 Upper cleaning liquid supply pipe 32 Lower cleaning liquid supply pipe 33 Cleaning liquid injection nozzle 41 Upper air supply pipe 42 Lower air supply pipe 43 Air injection Nozzle 51 Upper rinse liquid supply pipe 52 Lower rinse liquid supply pipe 53 Rinse liquid injection nozzle 60 Cleaning liquid tank 61 Receiving tray 62, 62 'External partition plate 63 Clearance A Cleaning step B Drying step C Rinse step

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B08B 1/00-7/04

Claims (4)

(57) [Claims] 1. A cylindrical drum body having an infinite number of holes in a cylindrical surface.
A rotary drum (10) including (11) and a spiral fin (12) concentrically and coaxially spirally fixed to the inner surface of the drum body (11) extends in the horizontal direction. The rotating drum (10) has at least one washing step (A), followed by a rinsing step (C) along its extending direction.
Rotating drum type cleaning device (1), which is divided into other processes such as a drying process (B), in which objects to be cleaned introduced from one end of the rotating drum (10) are sequentially processed and discharged from the other end.
In the boundary of the above process, the inner peripheral edge (1) of the spiral fin (12) extends over one span or more of the spiral fin (12).
3), the inner peripheral edge (1) of the spiral fin (12).
A rotary drum type washing apparatus comprising a partition plate means (20) for intercepting a center penetrating part (14) formed by 3) between processes. And a supply pipe (31, 41, 51) which penetrates the partition plate means (20) and the center penetrating portion (14) and supplies the processing medium of the step. ) Is the supply pipe at the boundary of the process
(31, 41, 51), at least one partition disk (25) fixed to the outer periphery, a partition cylinder (21) fixed to the inner peripheral edge (13) of the spiral fin (12), and a partition disk ( Partition cylinder (21) approaching and facing 25)
An annular partition plate (22) fixed to the inner surface of the supply disk, and a partition disk attached to the supply pipes (31, 41, 51).
The cleaning device according to claim 1, wherein the (25) and the corresponding annular partition plate (22) form a labyrinth seal. 3. The partition plate means (20) is fixed to the partition cylinder (21) fixed to the inner peripheral edge (13) of the spiral fin (12), and is fixed to the inner peripheral surface of the partition cylinder (21). Partition disk (2
3. The cleaning device according to claim 1, wherein the cleaning device comprises: 4. The apparatus according to claim 1, wherein the rotating drum is a casing for an apparatus.
(2), a receiving tray (61) for receiving the cleaning liquid is provided below the rotating drum (10), and at the boundary between the above-mentioned processes, the rotating drum (10), the casing (2) and the receiving tray ( 2. The cleaning device according to claim 1, further comprising at least one outer partition plate (62) for partitioning a space formed by the outer partition plate (61).