JPS592816Y2 - Backwash liquid injection device for "filtration" equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a backwash liquid injection device for a filtration device.The purpose of the invention is to rotate a cylindrical filter and pass only a liquid containing foreign substances from the outside to the inside to remove foreign substances. In a filtration type filtration device, when foreign matter adheres to the outer surface of a cylindrical filter and causes clogging, the purpose is to continuously eliminate or prevent the clogging by backwashing.

As pre-treatment at the washing area, labels adhering to bottles are removed.

That is, while the bottle is moved by a carrier basket within the liquid tank of the label removing device, the label attached to the bottle is floated and separated in the liquid.

The bottles whose labels have been removed in this way are sent to the washing machine, while
The label mixture in the liquid tank is sent to the separation device for liquid-label separation.

In this case, a label filtration device is installed between the label removing device and the label separating device in order to improve the throughput of the label separating device and to effectively reuse the waste liquid (separated liquid) from the label separating device. It is effective to concentrate the label mixture using this label filtration device.

The present invention proposes a device that can be adopted in a filtration device for the purpose of large-scale processing of such a mixed liquid with foreign substances, and can bring particularly advantageous results. Application cases will be explained based on FIGS. 1 to 6.

A cylindrical casing 2 is installed in the upper part between the left and right pair of side plates IA and IB.
is fixed in a horizontal state, and a hopper-shaped surrounding wall 3 is provided at the lower part of this cylindrical casing 2, and a rectangular passage tube 4 having a rectangular cross section is connected.

The rectangular passage cylinder 4 is provided with a pair of left and right connecting pipes 5A and 5B, which are connected to a label mixed liquid feed pipe 7 led from a plurality of label removing device liquid tanks 6.

Therefore, the inside of the cylindrical casing 2 is the label mixed liquid receiving chamber 2A.
The inside of the hopper-shaped surrounding wall 3 becomes a label collection chamber 3A, and the label collection chamber 3A is continuous with the label mixed liquid receiver chamber 2A.

Further, the label collection chamber 3A is connected to the inlet 10A of the label separation device 10 via a connecting pipe 8 provided on the side plate 1A and a concentrate feed pipe 9 connected to the connecting pipe 8.

A bearing 11 is fixed to one side plate 1A so as to be concentric with the cylindrical casing 2.

The rotating shaft 12 supported by this bearing 11 is interlocked and connected via a transmission mechanism 14 to a rotational drive device 13 provided near the top of the cylindrical casing 2 outside the label mixed liquid receiver chamber 2A, and A rotary plate 15 is fixed inside the recipient chamber 2A.

A seal plate 16 is fixed to the rotating plate 15 to close the gap between the rotary plate 15 and the bearing 11.

Note that the rotational drive device 13 includes an electric motor 13A and a reduction gear 1.
3B, and the transmission mechanism 14 has a sprocket 14A.
, a cheno 14B, a torque limiter 14C, etc.

An opening 17 is formed in the other side plate 1B, and a bearing 18 is provided at the edge of this opening.

Reference numeral 19 denotes a cylindrical filter, which is made of, for example, a wire mesh that does not allow the labels in the label mixture to pass through.One end of the filter is fixed to the outer periphery of the rotary plate 15, and the other end is supported by the bearing 18. Ru.

A cover casing 20 is provided on the outside of the other side plate 1B so as to cover the opening 17, and the inside of the cover casing 20 is configured as a drain chamber 20A that is continuous with the inside of the cylindrical filter 19 via the opening 17.

A drain passage pipe 21 led through the lower part of the cylindrical casing 2 is connected to the bottom of the drain chamber 20A.

This drain passage pipe 21 is a drain pipe 23 having a pump 22.
The liquid flow forming nozzle 6A of the liquid tank 6 of the label removing device is
connected to.

24 indicates a backwash liquid injection device.

As shown in FIG. 2, FIG. 5, and FIG.
a backwashing liquid injection cylinder 25 disposed over the above, a rod 26 held within this backwashing liquid injection cylinder 25 so as to be freely retractable in the longitudinal direction within a certain stroke, and the above-mentioned rotating plate. 15
an annular cam 27 fixed to the cam 27 and a cam follower 28 fixed to one end of the rod 26 corresponding to the cam 27;
and externally fitted onto the other end side of the rod 26, and the rod 2
A compression spring 29 is interposed between the collar 26A of No. 6 and the end plate 25A of the backwash liquid injection cylinder 25.

A support fitting 30 is fixed to the top of one end of the backwash liquid injection tube 25, and a bush 30A of the support fitting 30 is fitted onto the rotating shaft 12 so as to allow rotation thereof.

Further, a connecting pipe 31 A leading to the inside of the backwashing liquid injection cylinder 25 is fixed to the lower part of the other end thereof, and this connecting pipe 31 A is connected to a connecting pipe 31 B fixed to the bottom plate of the cover casing 20 by a flange. be combined.

With this configuration, the backwash liquid injection cylinder 25 is fixed in position in a state close to the inner bottom part (label collection chamber 3A and upper part) of the cylindrical filter 19, and the cam follower 28 follows the cam 27 by the bias of the compression spring 29. A tea container 3 is placed on the surface of the backwash liquid injection cylinder 25 that faces the cylindrical filter 19.
2 is formed, and the rod 2 is placed inside this tea container 32.
6, the comb teeth 33 protruding at equal pitches are inserted.

In the illustrated example, the backwash liquid injection cylinder 25 has a pair of closing plates 35A, 35B attached to the open part of the cross-sectional mesh-like member 34 with an open bottom surface with a space between them, and flat plates 36A, 36B are attached to each closing plate 35A, 35B. are provided, and these flat plates 36A, 36B are brought close to the inner surface of the cylindrical filter 19.

Therefore, the tea container 32 is formed between a pair of flat plates 36A and 36B.

A communication pipe 37 led through the lower part of the cylindrical casing 2 is connected to the connection pipe 31B, and a connection pipe is connected to the communication pipe 37 through the box-shaped passage 38 provided in the one side plate 1A. 39 is connected.

Therefore, the connecting pipe 39, the box-shaped passage 38, the communicating pipe 37,
A separation liquid inlet passage pipe 40 is constituted by the connecting pipes 31B and 31A.

This separation liquid inlet passage pipe 40 is connected to the label separation device 1.
A separated liquid circulation pipe 42 which is introduced from the outlet 10B of 0 and has a pump 41 is connected thereto.

According to the above, the label mixture generated in the label removal device liquid tank 6 passes through the label mixture receiver chamber 2A and the label collection chamber 3A and is concentrated before reaching the label separation device population 10A.

That is, after the label mixture flows into the receiving chamber 2A, only the liquid passes through the cylindrical filter 19 which is rotated by the operation of the rotary drive device 13, reaches the liquid drainage chamber 20A, and is further drained from the liquid drainage chamber 20A. Passage pipe 21 and drain pipe 23
The liquid is returned to the label removing device liquid tank 6 through the label removing device liquid tank 6.

On the other hand, the label L is partially attached to the outer surface of the cylindrical filter 19 due to the influence of the liquid flow into the cylindrical filter 19,
The remaining part is in a floating state in the label mixed liquid receiving chamber 2A.

Therefore, the label mixture in the label mixture receiving chamber 2A is gradually concentrated, reaches the label collection chamber 3A, and is further sent to the inner bottom of the label separation device 10 through the connecting pipe 8 and the concentrated liquid feed pipe 9.

Therefore, since the label mixture sent to the label separation device 10 is concentrated, its processing capacity is fully utilized, and efficient liquid-label separation is performed.

The separated liquid generated in the label separator 10 passes through the outlet 10B, the separated liquid circulation pipe 42, and the separated liquid inlet passage pipe 40, and reaches the backwashing liquid injection cylinder 25, and is injected from the tea container 32 to the cylindrical filter 19. The label L adhering to the outer surface of the container is peeled off by backwashing action and sent to the label collection chamber 3A.

Therefore, the cylindrical filter 19 will not be clogged by the label L attached thereto, and only liquid will be discharged in good condition at all times during continuous operation.

Inside the backwash liquid spout cylinder 25, as the cylindrical filter 19 rotates, the cam 27, cam follower 28, and compression spring 29
Due to this action, the rod 26 having the comb teeth 33 reciprocates within a constant stroke.

Therefore, the backwashing liquid sprayed from the tea container 32 uniformly backwashes the entire surface of the rotating cylindrical filter 19, thereby reliably preventing clogging.

As is clear from the above explanation, according to the present invention, the comb teeth reciprocate within the tea container of the backwash liquid injection cylinder during backwash liquid injection, so that the backwash liquid uniformly spreads over the entire surface of the rotating cylindrical filter. This means that the cylindrical filter's filtration ability is not impaired, as the cylindrical filter is backwashed and the clogging can be cleared one by one even during continuous operation.

In the embodiment, a case where the present invention is applied to a label filtering device has been described, but the present invention can be similarly applied to similar devices in other fields.

[Brief explanation of drawings]

1 to 6 show an embodiment of the present invention, in which FIG. 1 is a side view, FIG. 2 is a sectional view taken along line II in FIG. 4 is a cross-sectional view of III-III in FIG. 3, FIG. 5 is a vertical side view of the main part, and FIG. 6 is an enlarged cross-sectional view of IV-IV in FIG. 5. It is. 13...Rotary drive device, 15...Rotating plate, 19...Cylindrical filter, 24...
・Backwash liquid injection device, 25...Backwash liquid injection cylinder, 2
6... Rod, 27... Annular cam,
28...Cam follower, 29...Spring (compression spring), 31 A...Connecting pipe, 32...
...Tea caddy, 33...Comb teeth.

Claims (1)

[Scope of utility model registration request] A backwashing liquid injection device for a backwashing device for a filtration device equipped with a cylindrical filter and its rotational drive device, the backwashing liquid being provided inside the cylindrical filter and having slots on the surface facing the cylindrical filter. an injection cylinder, a rod held in the backwashing liquid injection cylinder so as to move forward and backward in the longitudinal direction within a certain stroke, comb teeth provided on the rod and inserted into the slots, and a cylindrical screen. An annular cam provided on a rotary plate that rotates integrally, a cam follower fixed to one end of the rod corresponding to the cam, and a cam follower interposed between the rod and the backwash liquid injection cylinder and urging the rod. and a spring that causes the cam follower to follow the annular cam, and the backwash liquid injection pipe is provided with a connection pipe for supplying backwash liquid. .