JPH0529042Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to liquid filtration, particularly to the improvement of a filtration machine using a cylindrical material having a periphery on the outer periphery and guiding the liquid inside. .

[Conventional technology]

Conventionally, a plurality of cylindrical materials, each having a cylindrical material on the outer periphery that utilizes the microporous properties of cloth, metal, ceramics, etc., and from which the liquid is taken out, are hung inside a container.
Filtering machines have been used in which the stock solution to be filtered is forced into a container.

If filtration is continued in such a filtration machine, the pressure loss will increase as the suspended solids in the raw solution are captured and attached to the outer surface of the material, and when the pressure loss reaches a certain value, filtration will be stopped. The plant was stopped to clean the materials.

There are two ways to wash the materials: a manual method, in which the materials are removed from the container, and an automatic method, in which the materials are washed inside the container without being removed, but the latter automatic method was generally used.

In automatic material cleaning, cleaning water (generally used) is run in the opposite direction to the flow of the liquid.
Alternatively, compressed air was sent into the interior of the material and the momentum of the air passing through the material was utilized.

[The problem that the idea aims to solve]

However, with the conventional automatic cleaning methods described above, it is difficult to perform effective cleaning due to limitations in equipment or cleaning sources. It was extremely difficult to expect that.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks of the conventional method and to provide a filter that can stably and uniformly clean materials.

[Means to solve the problem]

The present invention provides a through-hole that surrounds and fits one or more of the cylindrical materials in a container in which a plurality of cylindrical materials having a curved surface on the outer periphery and guiding liquid inside are suspended in a container using a material mounting plate. A plurality of floats are installed on a guide provided on the material mounting plate so as to move up and down freely in a guide provided on the material mounting plate so as to follow changes in the liquid level in the container and move along the outer periphery of each material. An injection chamber with an injection hole provided in a part of the inner circumference of the hole is formed, a spiral hose connected to a water supply source is connected to the injection chamber, and the spiral hose is movably supported by a hose guide. It is a characteristic feature.

[Effect]

In the present invention, the float that surrounds one or more cylindrical members and follows changes in the liquid level in the container is
During cleaning, it floats above the material, but when cleaning the material, the liquid in the container is gradually drawn out, and as the liquid level falls, it descends. At the same time, cleaning water (undiluted solution can also be used) is pressurized into the float, and the float descends while spraying the cleaning water onto the material surface from the injection holes provided in the float.

Therefore, the entire surface of the material from the top to the bottom is cleaned by a jet of washing water, and if conventional backwashing with water or compressed air from inside the material is used, further cleaning is possible. Effective cleaning takes place.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. The inside of the container 1 is partitioned by a material mounting plate 2 into an upper liquid chamber 3 and a lower liquid chamber 4. A plurality of cylindrical members 5 having micro-perforated surfaces on the outer periphery and guiding the liquid inside are installed vertically, and the inside of the members 5 is communicated with the liquid chamber 3. is opened and the liquid chamber 3 has a liquid outlet 8 opened.

Furthermore, within the overchamber 4, a float 9 that passes through each material 5 is arranged so as to be able to rise and fall in accordance with changes in the liquid level. It is preferable that the guides 10 and 11 be raised and lowered along an appropriate number of guides 11 fixed to the float 9 while being kept horizontal at all times, and that these guides 10 and 11 have a low contact resistance with the float 9.

In addition, the float 9 can penetrate a plurality of materials 5 together, as partially shown in FIG. 2, without penetrating each material 5 individually, and the float 9 can also be deployed separately. can.

An injection chamber 12 is formed inside the float 9,
A flexible spiral hose 13 is connected to introduce cleaning water into the injection chamber 12 and not to obstruct the lifting and lowering of the float 9, and the spiral hose 13 is connected to a water supply source of cleaning water via the overchamber 4. .

Furthermore, injection holes 14 communicating with the injection chamber 12 are arranged on the surface of the float 9 through which the material 5 penetrates, and cleaning water is injected from these injection holes 14 toward the penetrating portion of the material 5. It's becoming like that.
As partially shown in FIG. 2, the injection hole 14 can be raised up from the float 9 and positioned above the liquid level, or can be positioned below the liquid level; Alternatively, the buoyancy of the float 9 can be adjusted with a weight or the like so that it can be freely set below the liquid surface.

During the period of time, the stock solution is forced into the filter chamber 4 from the stock solution inlet 6 and is passed through the material 5.
The liquid passes through the interior of the liquid chamber 3 and is taken out from the liquid outlet 8. In such a situation, float 9
is floating above the material 5 as shown in FIG.

When cleaning the material 5, when the inflow of the stock solution is stopped and the liquid in the overchamber 4 is gradually drawn out from the drain 7, the float 9 also descends as the liquid level falls. At this time, at the same time, cleaning water (undiluted solution) is injected from the spiral hose 13 into the injection chamber 12 in the float 9, and while spraying the cleaning water onto the surface of the material 5 from the injection hole 14, it is sprayed from the top to the bottom of the material 5. Wash in sequence.

In addition, if a brush (not shown) is attached to the penetrating surface of the float 9 through which the material 5 penetrates so that it lightly contacts the material 5, the surface of the material 5 will be brushed as the float 9 moves up and down, resulting in a cleaning effect. Furthermore, by using conventional backwashing using washing water or compressed air from inside the material 5 during such washing, even more effective washing can be performed.

If the material 5 cannot be held in a fixed position and may sway in the liquid, a material guide 15 is provided at the part where the material 5 passes through the float 9, as shown in FIG. It is also possible to stabilize the elevation of the float 9.

[Effects of the invention] In this invention, the float with the cleaning water injection chamber moves up and down along the guide as the liquid level changes, so it is always kept horizontal and can easily follow changes in water level.
Moreover, since the spiral hose is supported by the hose guide and expands and contracts, it does not get in the way and does not interfere with the lifting movement, ensuring safe operation that follows changes in the liquid level, and is highly reliable.
By gradually drawing out the liquid in the container, cleaning is performed automatically by spraying cleaning water from the top to the bottom of the material surface using a float that descends following the liquid level, and the undiluted solution is used as cleaning water. Because it can be used as a cleaning agent, there are no restrictions on the cleaning source, and even if adhesive substances are attached to the material, it has extremely useful effects such as being able to effectively obtain a stable and uniform cleaning effect by spraying cleaning water. It is something that plays.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is an overall vertical sectional view, FIG. 2 is a perspective view of the main part, and FIG. 3 is an enlarged vertical sectional view of the main part. 1... Container, 2... Material mounting plate, 3... Liquid chamber, 4... Over chamber, 5... Material, 6... Stock solution inlet, 7... Drain, 8... Liquid outlet, 9... Float , 10... hose guide, 11... guide,
12...Injection chamber, 13...Spiral hose, 1
4...Injection hole, 15...Material guide.

Claims (1)

[Scope of utility model registration request] In a filter machine in which a plurality of cylindrical members 5 having a rounded surface on the outer periphery and guiding liquid inside are suspended in a container 1 using a material mounting plate 2, a through hole is provided to surround and fit one or more of the members 5. A plurality of floats 9 are arranged so as to be movable up and down on a guide 11 provided on the material mounting plate 2 so as to follow changes in the liquid level in the container 1 and move along the outer periphery of each material 5. An injection chamber 12 is formed in which an injection hole 14 is provided in a part of the inner periphery of the through hole on one side of the upper and lower sides, and a spiral hose 13 connected to a water supply source is connected to the injection chamber 12. is movably supported on a hose guide 10.