JPH0425043B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a filter for filtering contaminated raw water to obtain clean water.

[Conventional technology]

A conventional filter of this type is disclosed in, for example, Japanese Utility Model Publication No. 58-33772.

This filter consists of multiple water purification tubes with a net on the bottom and a purification material filled inside, which are stacked one above the other to create a multiple water purification tube, and a net is placed on the bottom of the multiple water purification tubes. It is constructed with a built-in water supply cylinder and is intended to obtain purified water through the natural flow of filtered water supplied from the water supply cylinder.

[Problem to be solved by the invention]

However, conventional filters have the following problems.

(1) Insoluble foreign substances such as dust contained in the water to be filtered are removed by the net at the bottom of the water bottle, but if the net is only used, the insoluble foreign substances will pass through. For this reason, the insoluble foreign matter that has passed through the water filter enters or mixes into the purifying material of the water purifying cylinder, and the performance of the purifying material rapidly deteriorates.

(2) The water to be filtered passes between the purification materials by gravity, but since the purification materials are granular, there is a path for the water to flow down within the purification material layer, and the water to be filtered in the purification material layer passes through the purification materials. Unevenness occurs in the water flow path. For this reason,
Only the purification material around the flow path of the water to be filtered contributes to the purification of the water to be filtered, and the purification material is not effectively utilized, resulting in a decrease in purification efficiency.

(3) Purification of the water to be filtered is carried out only by the purification material filled in the purification cylinder. The net at the bottom of the water purification cylinder merely prevents the purification material from spilling out, and does not function as a filter layer. For this reason, the purification ability of conventional filters is not as high as the one shown above.

(4) The water to be filtered is purified by its natural flow, and the rate of flow is primarily determined by the type and properties of the purifying material, the depth of the purifying material layer, etc. For this reason, it is not possible to control the flow rate according to the quality (dirt) of the water to be filtered.

This invention was made to solve these conventional problems; (1) the performance of the purifying material does not deteriorate rapidly; (2) the purifying material can be used effectively; The purpose of the present invention is to provide a filter that (3) has a high purification ability and (4) can variably control the flow rate of water to be filtered depending on the quality (pollution) of the water.

[Means to solve the problem]

The filter provided by the present invention is a filter in which a first filter tube, a second filter tube, a third filter tube, and a filtered water receiver are coaxially stacked in this order from above, and The first filter tube includes a filter plate provided in the lower opening, a filter cloth closely placed on the filter plate, and a sludge filtration bag inserted from the upper opening, and the second filter tube has an upper and lower part. an activated carbon chamber separated by an upper filter plate and a middle filter plate, an ion exchange resin chamber whose upper and lower parts are partitioned by an intermediate filter plate and a lower filter plate, respectively; and the upper filter plate.
A filter cloth closely arranged on the middle filter plate and the lower filter plate, activated carbon filled in the activated carbon chamber, and ion exchange resin filled in the ion exchange resin chamber,
The third filtration tube includes a filter plate having a plurality of holes arranged vertically in parallel at regular intervals in activated carbon and an ion exchange resin, and the third filtration tube includes a filter plate provided at a lower opening; It is equipped with at least one sheet of filter paper placed on a filter plate and a presser lid having a large number of holes placed on top of the filter paper.

[Function] (1) Since the sludge filtration bag filters out insoluble foreign matter such as garbage contained in the water to be filtered, it prevents deterioration of the performance of the purification material due to insoluble foreign matter getting mixed into or adhering to the purification material. I can do it.

(2) Since a bamboo board with multiple holes is interposed between the purifying materials activated carbon and ion exchange resin,
The water to be filtered flowing down through the purification material is diverted by the cutting board and comes into uniform contact with all the purification materials. Therefore, all of the purification materials can be used effectively, and purification efficiency is improved.

(3) Since the water to be filtered is filtered not only by activated carbon and ion exchange resin but also by a sludge filter bag, filter plate, filter cloth, and filter paper, its purification ability can be increased.

(4) Since at least one filter paper is placed on the filter plate of the third filter cylinder, by varying the number of filter papers, the flow rate of the water to be filtered can be controlled, It is possible to select the flow rate that is optimal for the water quality (optimal for the degree of contamination).

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 5. FIG. 1 is a vertical sectional view showing the overall configuration of the filter of the embodiment, and FIGS.
This figure shows the detailed structure of each part when the filter shown in the figure is disassembled.

In FIG. 2, 2 is a first filter cylinder, and 3 is a filter plate provided at its lower opening. 1 is a sludge filter bag made of paper that allows water to pass through but does not allow solid matter to pass through.
It is inserted into the first filter cylinder 2 with its mouth opened. At this time, the hook part 24 provided at the edge of the opening of the sludge filter bag 1 is hooked to the upper edge of the first filter tube 2. The filter plate 3 is a plate having a large number of holes with a diameter of 2 mm, and a 40-mesh polyethylene cloth (filter cloth according to the present invention) 4, whose periphery is bonded, is tightly placed on the filter plate 3. The first filtration tube 2 has a downwardly protruding joint 5 that fits into a joint 5b that protrudes from the upper end of the second filtration tube 7 shown in FIG.
The three protrusions 6a and 6b provided at 120 degree intervals are reliably connected to the second filter cylinder 7 by engaging with each other.

In FIG. 3, 7 is a second filter cylinder, 8 is a filter plate provided at the upper opening thereof, and has a large number of holes with a diameter of 2 mm. On top of this, 40 meshes of polyethylene cloth 9 are placed in close contact. 10 is a pawl extending downward from the filter plate 8. 12 is the activated carbon chamber,
Filled with activated carbon. Inside the activated carbon 12,
Two jiyama boards 1 at regular intervals in the vertical direction
1 is inserted. This wall board 11 is a polyethylene resin board having many small diameter holes.
The bottom of the activated carbon chamber 12, which communicates with an ion exchange resin chamber 15 to be described later, has an inverted conical slope of about 30 degrees. 15 is an ion exchange resin chamber smaller than the activated carbon chamber 12, and a filter plate 1 is connected between it and the activated carbon chamber 12.
It is separated by 3. On top of the filter plate 13, 60 meshes of polyethylene cloth 14 are placed in close contact. The filter plate 13 has holes 13 as shown in FIG.
It is shaped like a cross board with a. At the bottom of the ion exchange resin chamber 15, a filter plate 17 having a large number of holes of 2 mm in diameter is provided, and 60 meshes of polyethylene cloth 18 are tightly set under the filter plate 17. The ion exchange resin chamber 15 is filled with a cation exchange resin, and a diagonal plate 16 is inserted in parallel to the diagonal plate 11. 2
Reference numeral 6 denotes a lid holding cylinder, which is used to hold down the holding lid 20 shown in FIG.

In FIG. 4, 19 is a second filter cylinder. 2
Reference numeral 0 denotes a holding lid for filter paper 21, which will be described later, and has a large number of holes with a diameter of 2 mm. Reference numeral 22 denotes a filter plate provided at the lower opening of the third filter cylinder 19, which has many holes with a diameter of 2 mm.
A filter paper 21 is placed between the filter plate 22 and the holding lid 20. Usually, the required number of cards in the range of 1 to 5 is placed. 25 is a knob of the presser cover 20.
23 is a filtered water receiver, which is a container for receiving filtered water.

As shown in FIG. 1, the first to third filter cylinders 2, 7, 19 and the filtered water receiver 23 are used by being coaxially stacked in the vertical direction.

Since the filter of the embodiment has the above-described configuration, raw water is purified as follows.

In other words, when polluted raw water is put into the sludge filtration bag 1, coarse substances in the raw water contamination-causing substances are
This removes it. This sludge filter bag 1 is designed so that the engaging part 24 is retained on the first filter tube 2, so that if it becomes clogged, it can be replaced immediately. Water from which sludge and insoluble foreign matter have been removed through the sludge filter bag 1 is roughly filtered through the polyethylene cloth 4 and filter plate 3 at the bottom of the first filter tube 2.

The coarsely filtered water passes through the polyethylene cloth 9 and the filter plate 8 and moves to the second filter tube 7. When the water passes through the activated carbon chamber 12, the organic matter in the water is adsorbed and removed by the activated carbon, and flows down to the ion exchange resin chamber 15 below.

This activated carbon chamber 15 has a pawl 10 extending into the activated carbon layer below the filter plate 8, and two circumferential plates 11 are inserted into the activated carbon layer, so that the water flowing down is contained in the activated carbon layer. Get lost. As a result, the contact area between water and activated carbon increases, the purifying action of activated carbon is effectively utilized, and filtration efficiency is improved. Since the bottom of the activated carbon chamber 12 has an approximately 30 degree slope,
Water flow is encouraged.

Water flows from the activated carbon chamber 12 through the filter plate 13 and the polyethylene cloth 14 above it, and flows down into the ion exchange resin chamber 15 below, where ammonia and heavy metals contained in the water are removed by the cation exchange resin. Since the organic matter has already been removed in the activated carbon chamber 12, the ion exchange resin is not contaminated with organic matter, and the ionized substances in the water are effectively removed. In addition, if you use a mixture of cation exchange resin and anion exchange resin in an appropriate ratio as the ion exchange resin, anion substances can also be removed, so you can obtain clean water by filtering river water and rainwater. can.

This ion exchange resin chamber 15 also has an activated carbon chamber 12.
Similarly, a polyethylene resin plate with small-diameter holes is inserted into the ion exchange resin as a barrier plate, so that the water becomes a stray flow. As a result, the purifying action of the ion exchange resin is effectively utilized, and filtration efficiency is improved. The water is filtered through the filter plate 17 at the bottom of the second filter tube 7 and the polyethylene cloth 1 below it.
8 and then moves to the next third filter cylinder 19.

In the third filter cylinder, one to five pieces of filter paper 21 are placed on the filter plate 22, and a presser lid 20 is placed on top of the filter paper.
and securely press it with the lid presser tube 26 protruding from the bottom of the second filtration tube 7. When pressed in this manner, the filter papers 21 are brought into close contact with each other, which reduces water leakage and prevents air from entering between the filter papers. Since the presser cover 20 has a knob 25, it can be easily attached and detached. Further, when the filter paper 21 becomes dirty, it is easy to replace it, so that the filtration efficiency of the filter paper 21 can be effectively maintained for a long period of time. Furthermore, if the number of filter papers is increased or decreased in the range of 1 to 5, the flow rate of water changes, so the filtration rate can be changed depending on the quality (dirt) of the raw water.

The water thus filtered finally enters the filtered water receiver 23. The shape and size of this filtered water receiver can be changed depending on the purpose.

As mentioned above, in the filter of the example, in the first stage, rough filtration is performed to remove insoluble foreign matter in advance, so it is possible to prevent deterioration of the performance of the purification material such as activated carbon due to the adhesion of insoluble foreign matter. .

In addition, the water becomes a stray flow due to the pawl 10 of the activated carbon chamber 12 and the cutting boards 11 and 15 placed in both chambers 12 and 15, so the contact area with the purification material becomes larger and the purification material can be used more effectively. becomes. Furthermore, the bottom of the activated carbon chamber 12 is sloped at approximately 30 degrees, which has the effect of increasing the flow velocity.

And a filter plate 8 having a large number of holes with a diameter of 2 mm.
Combination of 40 mesh polyethylene cloth 9, cross plate filter plate 13 and 60 mesh polyethylene cloth 1
4 combination, and a combination of a filter plate 17 with a large number of 2 mm diameter holes and a polyethylene cloth 18 of 60 meshes, which are sequentially provided from the top, stabilize the filtration rate and improve the raw water purification ability. improves.

The water is finally filtered by the filter paper 21 of the third filter tube 19, and the filtration speed can be changed by increasing or decreasing the number of filter papers 21 between 1 and 5 sheets depending on the quality of the raw water. It becomes possible to purify water according to its quality. Also, if it gets dirty, you can quickly replace it.

〔Effect of the invention〕

As explained above, since the present invention has the above configuration, it has the following effects.

(1) Rapid deterioration of purification materials (activated carbon, ion exchange resin) can be prevented.

(2) Purification materials can be used effectively without waste.

(3) The ability to purify water to be filtered can be increased.

(4) The flow rate of the water to be filtered can be variably controlled depending on the quality of the water (dirt).

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view showing the overall configuration of an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of the first filter tube in FIG. 1, and FIG. 3 is a vertical cross-section of the second filter tube in FIG. 1. 4 is a vertical sectional view of the third filter tube and filtered water receiver in FIG. 1, and FIG. 5 is a plan view of the cross plate in FIG. 1. 1... Sludge filter bag, 2... First filter cylinder, 3...
Filter plate, 4... Polyethylene cloth, 7... Second filter tube, 8... Filter plate, 9... Polyethylene cloth, 11
... Diyama board, 12... Activated carbon chamber, 13... Filtration plate, 15... Ion exchange resin chamber, 16... Diyama board, 17... Filter plate, 18... Polyethylene cloth,
19... Third filter cylinder, 20... Pressing lid, 21...
... Filter paper, 22 ... Filter plate, 23 ... Filtered water receiver.

Claims (1)

[Claims] 1 A filter consisting of a first filtration tube, a second filtration tube, a third filtration tube, and a filtered water receiver stacked coaxially in this order from above, wherein the first filtration tube has a lower opening. The second filtration tube is equipped with a filtration plate provided on the filtration plate, a filtration cloth closely placed on the filtration plate, and a sludge filtration bag inserted from the upper opening, and the second filtration tube has an upper part and a lower part that are connected to the upper filtration plate and an intermediate part, respectively. An activated carbon chamber separated by a filter plate, an ion exchange resin chamber whose upper and lower parts are partitioned by an intermediate filter plate and a lower filter plate, respectively, and an activated carbon chamber which is in close contact with the upper filter plate, the intermediate filter plate, and the lower filter plate. The arranged filter cloth, the activated carbon filled in the activated carbon chamber, the ion exchange resin filled in the ion exchange resin chamber, and a plurality of filter cloths arranged vertically in parallel with a certain interval between the activated carbon and the ion exchange resin. The third filter tube includes a filter plate provided at the lower opening, at least one filter paper placed on the filter plate, and a plurality of filter paper placed on the filter paper. 1. A filter comprising: a presser cover having a hole;