JPH07112424B2 - Water filter for seaweed - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a water filter for laver making.

[0002]

2. Description of the Related Art When seaweed is prepared, a seaweed is processed through a pretreatment process. When the seaweed finally put into the process water is made up, the washing water and the process water are used. Is circulated by filtration and reused. Filtration of this circulating water is very important, and in particular, a large amount of diatom is contained in the papermaking water. Said diatom is a microorganism parasitically attached to seaweed, and when seaweed containing diatom comes into contact with fresh water of washing water or making water, the cell membrane is broken and the mucus content of diatom cells pops out. Seaweed products with a large amount of mixed contents have poor gloss and significantly deteriorate the quality. Therefore, a large amount of water is used in this step, and the filtration and circulation of this water is a very important step.

The most frequently used conventional filtering device is a device 1'as shown in FIG.
This is because water entered by hydraulic pressure from the lower pipe 2'rotates the propeller shaft 3'in the apparatus main body 1 ', and peels off seaweed debris and the like adhering to the wire net 5'with the hairy brush 4',
The wire net is used to separate water and paper scraps, and the water is discharged from the pipes 6'and 6 "and the filtration residue is discharged and collected from the pipe 7 '. By the way, the wire mesh 5'is a hairy brush 4'. It is not possible to use a small mesh that can remove diatomaceous metal because it easily causes metal fatigue due to rotation etc. and the mesh is easily clogged. Therefore, it is not easy to replace the wire mesh 5'and clean the clogging. And required a great deal of expense and labor.

In other cases, there is a device for separating water and impurities by driving a net cage installed in a tank with a motor.
There were problems such as inefficiency and frequent breakdowns despite the high power cost.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention makes it possible to easily filter a large amount of water for laver making, and to maintain a filter net easily, so that a highly efficient filtering device is not commercially available. It is what

[0006]

DISCLOSURE OF THE INVENTION The present invention is provided on a rear portion in a standing manner.
The front side is 50 at the top of the frame frame with the back plate F
A water tank serving as a downflow plate for the papermaking water inclined at an angle of ° to 89 ° was installed, and a pull-down type filter net body 3 attached to the lower part of the water tank at an inclination of 7.5 ° to 9.5 ° and the filter net. With this on the lower part of the body
The flow guide plate 4 which is inclined in the opposite direction is provided, and the flow guide plate is provided in front of the flow guide plate.
A fixed gap between the rotatable dam plate and the leading edge of the flow guide plate 4.
A combination of S is formed to form the drop port 6, and a plurality of steps are formed in the same structure.
And a water tank with an inlet for filtered papermaking water is provided at the bottom , and the filter mesh faces downward.
There is a filter between the front edge p and the back plate of the device frame.
An excess residue chamber 12 is formed, and the filtration residue is naturally dropped from the filter mesh together with the water stream , and is separated into papermaking water and the residue.
It is characterized in that it comes to be separated .

[0007]

1 is an overall perspective view of the device of the present invention, and FIG. 2 is a side view of the same. A water tank is provided at the top of a frame frame F having a back plate F standing upright on the back surface. 1 is installed. Aquarium 1 here
Is formed with a downward flow port 2 of a downward flow plate inclined at θ = 50 ° to 89 °, and laver washing water or making water (simply making water for making paper) flows into a water tank 1 from a hose not shown. Will flow down like a curtain from this portion.

3 is located at the lower part of the water tank 1 at 7.5 ° to 9.5.
The filter net body 3 is arranged at an inclination angle of °, and the filter net body 3 is provided so that it can be pulled out to the front side while being supported by guide supports 11 on both sides with respect to the frame frame . Reference numeral 4 denotes a flow guide plate which is fixed to the device frame F below the filtration mesh body 3 at an inclination angle opposite to the above, and a weir plate 5 is attached to the device frame F on the front side of the flow guide plate 4. The pin 10 is attached so as to be rotatable and fixed at an appropriate angle. At this time, a constant gap S is formed between the lower end edge of the pin 10 and the leading edge of the flow guide plate 4, and the drop opening is formed. It becomes 6.

[0009] The present invention apparatus configuration of the filtering net body and guiding flow plate above described is than accounted a plurality stages in the same manner, in this illustrated embodiment is a structure in which three stages. By the way, a water tank 7 is provided below the lowermost filtration net body 3 without providing a flow guide plate, and the papermaking water which passes through the filtration net body 3 falls directly into the water tank 7. At this time, a residual chamber 12 for the filtrate is formed between the front end edge p of the filter net body 3 facing downward and the apparatus frame, and 9 is a pipe for taking out to the outside thereof. The mesh of the filter mesh body 3 configured in the above-mentioned multi-stage is made from coarse to fine from the upper stage to the lower stage, and in one example, # 50 to # 50.
It is set to the range of 0.

Next, the operation will be described. The papermaking water from the downflow port 2 flows down like a curtain over the width of the downflow port 2 and drops onto the filter net body 3 with a constant collision force. Here, the original filter mesh 3 is made coarse # 50,
Since only coarse seaweed debris is separated and filtered, the filter debris remaining on the net becomes a pile of debris 13 that rises up in the shape of a bank around the drop point (see FIG. 6A). With the fact that water always drops to the same place, the laminated waste mass 13 is ejected to the periphery of the falling point by the water that falls afterward (see FIG. 4), and the laminated waste mass 13 is allowed to be stacked. When it reaches the limit, it is sequentially washed away as shown in FIGS. 6B and 6C, and finally drops toward the residual chamber 12 as shown in D. At this time, when a certain amount of the piled-up scrap m having a higher inclination angle on the net is piled up, it gradually collapses and flows toward the lower side. By setting the angle θ ′ to be 7.5 ° to 9.5 °, efficient operation can be achieved.

Thus, the papermaking water that has passed through the first-stage filtration net body 3 falls onto the flow guide plate 4, is guided to the drop port 6 along the inclination of the flow guide plate 4, and It falls from the drop port 6 onto the second-stage filtration net body 3. The second-stage filtration net body 3 is # 10.
0, which filters out small residues,
At this time, the filtration residue mainly contains diatom and remains in the form of foam, and is gradually washed away in the same manner as described above to leave the residual chamber 1.
It will be dropped toward 2.

The papermaking water filtered by the second-stage filtration net body 3 further drops onto the flow guide plate 4 therebelow, and similarly to the above, the drop port 6 is formed along the inclination of the flow guide plate 4. I was diverted to
The filter mesh 3 (# 150 to # 5) of the third stage from the drop port 6
00) also falls like a curtain. Although three-stage filtration has been described in this embodiment, it is free to use a mesh of a multi-stage mesh as a fine mesh.

The papermaking water filtered as described above can remove almost 100% of impurities such as diatomaceous water, and the filtered papermaking water flows into the water tank 7 at the lowermost portion, and the water intake is appropriately selected. It will be used repeatedly by circulating it from No. 8 to the seaweed making machine.

The service life of the filter mesh 3 varies depending on the degree of mixing of diatom, but according to the experiments of the present inventor, 6 hours to
It can be continuously used for 24 hours, and by appropriately rotating the dam plate 5 to change its fastening position, the filter mesh body 3 can be easily pulled out and the clogging can be removed by cleaning. FIG. 3 shows the pulled out state.

[0014]

The present invention is configured as described above,
As for the operating cost, it is possible to efficiently filter a large amount of papermaking water at one time with only the power cost of the pump for the water tank 1, which is excellent in maintenance management such as clogging prevention and cleaning of the filter mesh. It contributes to improving productivity and securing water resources, and also to pollution prevention.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a device of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a side view showing a state where the filter net body is pulled out.

FIG. 4 is a diagram illustrating a falling state of water.

FIG. 5 is a perspective view of a filter mesh body.

6A, 6B, 6C, 6D, 6E, 6F, 6G, and 6G are explanatory views showing a state in which a laminated waste mass is formed.

FIG. 7 shows a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water tank 2 Downflow port 3 Filtration net body 4 Flow guide plate 5 Weir plate 6 Drop port 8 Water intake port 11 Net receiving frame 13 Laminated waste block

Claims (1)

[Claims] 1. A frame frame frame having a back plate F provided upright on the back surface.
At the top of the rame, a water tank with a front surface inclined at 50 ° to 89 ° and serving as a downflow plate for the papermaking machine is installed, and 7.5 mm below the tank.
Drawer-type filter mesh mounted at an inclination of 90 ° to 9.5 °
3 and a flow guide plate in the lower part of the filter mesh which is inclined in the opposite direction
4 is provided, and a rotatable dam plate is provided in front of the flow guide plate.
A fixed gap S is formed between the tip end of the
Become disposed in the same configuration in which a plurality of stages in combination, and the bottom is disposed a water tank having a water inlet of the filtered paper making water Thea
And the tip edge p and the device which are made to face downward of the filter mesh.
A residual chamber 12 for the filtrate is formed between the frame and the back plate.
, Filtered residue is falling spontaneously with water from the filtering net member
A water filtration device for laver making, characterized in that it is adapted to separate into making water and a residue while being made .