JPH072019Y2 - Filter and bath filtration device using the filter - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter suitable for removing dirt from hot water in a bathtub and a bath filter using the filter, and more particularly, to enable backwashing and maintainability. The present invention relates to an improved filter and a bath filter using the filter.

[0002]

2. Description of the Related Art Facilities such as factories, dormitories, hospitals, and inns equipped with bath facilities used by other people have the following problems in their management.

There are many complaints from the bath manager because the labor for managing and cleaning the bath is tough.

Dirt from hot water remains, and people who take a bath later complain.

For the convenience of the user, it is desirable to keep the bath available at all times, but the water and fuel costs are high,
Too expensive to manage.

As one of the solutions to these problems, the bathtub and the filter are connected via a circulation pump, the hot water in the bathtub is circulated through the filter, and the dirt of the hot water is removed to eliminate replacement of the hot water. There is one that reduces the fuel and water bills due to re-boiling, and also eliminates the need for daily cleaning of the bathtub so that the user can take a bath at any time.

As shown in FIG. 9, for example, the filter used for such an application comprises an outer peripheral container 4 provided with an openable / closable upper lid 3 and a strainer tube 5 fitted in the outer peripheral container 4. The outer peripheral container 4 is provided at its side portion with a sewage inlet 1 to which a connecting pipe for connecting to a bathtub is connected and a filtered water outlet 2 to which a connecting pipe from a circulation pump is connected.
In addition, the strainer cylinder 5 is a cage-shaped metal mesh, and the hot water in the bathtub is flowed from the dirty water inlet 1 to the filtered water outlet 2 to remove dirt from the hot water by the wire mesh of the strainer cylinder 5. It is like this.

[0008] By the way, in such a filter, when hair is caught on the wire net of the straining tube 5, stains and scales of hot water adhere to the hair, causing clogging immediately. The circulation is stopped, and the strainer cylinder 5 is taken out from the outer peripheral container 4 for cleaning.

[0009]

However, in the above filter, the lid of the outer peripheral container is opened every time the cleaning is performed, the strainer tube is taken out from the inside, and dust such as hair attached to the strainer tube is manually removed. Since it has to be removed, it is not only troublesome, but also very unhygienic, so there is a problem that the manager of the bath room is reluctant to clean it.

Further, since the circulation of hot water is stopped during the cleaning, there is a problem that the bath cannot be taken.

Therefore, an object of the present invention is to provide a filter which can be easily and hygienically cleaned, and can be cleaned without stopping circulation of hot water, and a bath using the filter. The purpose of the present invention is to provide a filtering device.

[0012]

In order to solve the above-mentioned problems, in the present invention, a strainer comprises a strainer cylinder and an outer peripheral container into which the strainer cylinder is fitted, and the strainer cylinder has an introduction hole at its center. An inner net and its inner net, in which the formed upper plate and a bottom plate having a diameter smaller than that of the upper plate are opposed to each other, and both ends are attached along the circumference of the introduction hole between the opposed upper plate and bottom plate. An outer net surrounding the inner net and the outer net is filled with a filter medium, while the outer container has an insertion hole formed at the center into which the strain tube is inserted, and the outer net is surrounded by the insertion hole. A first partition plate having an abutting portion in contact with the peripheral edge of the upper plate of the strainer cylinder, a through hole formed in the center, and a strainer tube fitted in the first partition plate around the through hole. The inner wall is partitioned by the second partition plate with which the bottom plate of the first contact plate abuts, and the first and second partition plates Filtered water outlet and backwash water inlet is provided between, it has a configuration in which the first and the sewage inlet and backwash water outlet outside of the second partition plate is provided.

Further, at this time, the above-mentioned filter material may be a stone containing a mineral component.

On the other hand, two filters are provided in parallel, one or both of the filters are the above filters, these filters are respectively connected to the baths, and one of the filters filters the hot water in the baths. However, when backwashing the filter, the other filter may be used to filter the hot water in the bathtub.

At this time, it is also possible to adopt a structure provided with timer means for switching the filter at a predetermined cycle.

[0016]

In the thus constructed filter, when the strainer tube filled with the filter medium in the gap between the inner net and the outer net is fitted into the insertion hole of the first partition plate inside the outer peripheral container, the strainer cylinder is inserted. The peripheral edge of the upper plate contacts the peripheral edge of the insertion hole of the first partition plate, and the bottom plate contacts the periphery of the through hole of the second partition plate. Therefore, the introduction hole of the strainer cylinder and the through hole of the second partition plate are communicated with each other, and the strainer cylinder is supported by both partition plates. At the same time, the inside of the outer peripheral container is partitioned into the inner side and the outer side of the first and second partition plates via the strain cylinder. In this state, the backwash water inlet and the backwash water outlet are closed, and when sewage is made to flow in from the sewage inlet, the sewage that has flowed in is brought into contact with the first or second partition plate and the partition plate. The upper plate and the bottom plate prevent the inflow to the side portion of the strainer cylinder, are introduced into the inner net by the introduction holes, flow out to the outer perimeter of the outer net through the filtering material, and flow out from the filtered water outlet. At this time, among the suspended solids of sewage, for example, large ones such as hair are scraped off by the inner net, and dust smaller than hair etc. that has passed through the mesh is removed by a filter material between the inner net and the outer net. Be done.

When the strain cylinder is clogged due to such filtration, the dirty water inlet and the filtered water outlet are closed, and the backwash water inlet and the backwash water outlet are opened. ,
When wash water is introduced from the backwash water inlet, the introduced wash water is outside the first and second partition plates due to the first and second partition plates and the upper and bottom plates of the cylinder. Is prevented from flowing into the inner net from around the outer net, and is discharged from the backwash water outlet through the introduction hole of the upper plate of the strainer tube or the through hole of the second partition plate. At this time, the small suspended matter adsorbed on the filter medium and the large suspended matter such as hair scraped off by the inner net are washed away by the washing water, and the inner net and the filter medium are washed.

Further, in the case where the above-mentioned filtering material is a medicinal stone,
Medicinal stones dissolve many mineral components in filtered water during filtration. On the other hand, the mineral content also activates the action of the microorganisms attached to the irregularities of the medicinal stone and accelerates the decomposition of daily pollutants such as ammonia in the sewage.

On the other hand, in the case where the above filters are provided in parallel, one of the filters is used for filtering the bathtub,
At the time of backwashing the filter, by switching and using the other filter, backwashing can be performed without interruption of filtration.
Keep the bath always available.

In addition, at this time, in the case of the one provided with the timer means, the backwashing is automatically performed periodically without any manual operation,
The filter is always kept clean.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a bath filter A using a filter a according to the present invention. Further, in FIG.
3 schematically shows the connection between the respective main constituent members.

This bath filtration device A includes two filters a and b connected in parallel with the bath 10 and the filters a and b.
A circulation pump 11 connected to the pump 11, a filtration tank 12 connected between the pump 11 and the bath 10, an electric motor provided between the bath 10 and the filters a and b, and the filters a and b and the circulation pump 11. Valves 13a ₁ , 13a ₂ , 13b, 14
a ₁ , 14a ₂ , 14b and their electric valves 13a ₁ ,
A control device 15 that has a timer for operating 13a ₂ , 13b, 14a ₁ , 14a ₂ , 14b, and that ejects ozone into the bath 10, and that is provided between the filtration tank 12 and the bath 10 and is connected from the filtration tank 12 to the bath A part of the hot water circulated to 10 is bypassed, and the hot water bypassed is heated and returned to the bathtub 10, and the boiler 16 keeps the hot water temperature constant.

As shown in FIGS. 3 to 5, the filters a and b each include a strainer tube 26 and an outer peripheral container 24 into which the strainer tube 26 is fitted.

The strainer tube 26 is shown in FIGS. 3 (a), 3 (b),
As shown in (c), a square-shaped upper plate 31 having an introduction hole 30 formed in the center and a donut-shaped bottom plate 25 having a smaller diameter than the upper plate 31 are opposed to each other, and An inner net 32 having both ends attached along the circumference of the introduction hole 30 between the bottom plates 25, and an outer net 3 surrounding the inner net 32.
3 is provided, and the gap formed between the inner net 32 and the outer net 33 is filled with medicinal stones as the filtering material 34.

For the inner net 32 and the outer net 33, metal punching boards are used in the present embodiment, but resin nets or metal wire nets may be used instead.

The medicinal stones are, for example, iron, titanium,
It contains mineral components such as aluminium, calcium, magnesium, manganese, potassium, sodium, phosphorus, boron, uranium, and cobalt, which are eluted during filtration. Therefore, the filtered hot water is made mild, and the microorganisms adhering to the irregularities on the surface are activated to accelerate the decomposition of life contaminants such as ammonia contained in the hot water.

On the other hand, the outer peripheral container 24 shown in FIGS. 4 (a), (b), and (c) is provided with a first partition plate 37 and a second partition plate 37 'in the inside 38 thereof. .

The first partition plate 37 has an insertion hole 36 formed at the center thereof into which the strain tube 26 is fitted.
An abutting portion 28 with which a peripheral edge 29 of the upper plate 31 of the strain tube 26 contacts is formed around the periphery of the.

Further, the second partition plate 37 'provided below the first partition plate 37 has a through hole in the center thereof having a diameter approximately twice that of the through hole 30 of the strain tube 26. Three
0'is formed, and the strain tube 26 is attached to the first partition plate 37.
As shown in FIG. 5, the outer peripheral edge 2 of the upper plate 31
9 is in contact with the contact portion 28 around the first partition plate 37, and the bottom plate 25 is in contact with around the through hole 30 'of the second partition plate 37'.

The outer container 24 is provided with a waste water inlet 20 outside the first partition plate 37, and the
And the second partition plate 37, 37 'between the filtered water outlet 21
Is provided. Further, in the filter a according to the present invention, the first backwash water outlet 22 is provided outside the second partition plate 37 '.
The backwash water inlet 23 is provided between the partition plates 37 and 37 '. In addition, in this embodiment, a second backwash water outlet 22 'is provided between the partition plates 37, 37' of the filter a so that dust adhering to the outer net 33 can be removed. There is.

As shown in FIG. 2, the dirty water inlets 20 of both the filters a and b are connected in parallel with the bathtub 10 through electric valves 13a ₂ and 13b by a pipe, and the filtered water outlet 21 is electrically driven. A pipe is connected in parallel with the suction port 11a of the circulation pump 11 via the valves 14a ₂ and 14b. The discharge port 11b of the circulation pump 11 is connected to the bath 1 through the filtration tank 12 filled with the "medicine".
By connecting with 0, bathtub 10 → filter a, b →
A circulation path for filtration is formed, that is, circulation pump 11 → filtration tank 12 → tub 10. On the other hand, the discharge port 11b of the circulation pump 11 is connected to the backwash water inlet 23 of the filter a via the electric valve 14a ₁ , so that the hot water of the filtered bath 10 discharged from the circulation pump 11 is discharged. Is supplied to the filter a as a washing water source. The supplied cleaning water is supplied to the drain pipe 17 by the electric valve 13a.
Discharged from the first and second backwash water outlet 22, 22 'connected in parallel via a ₁ is drained.

Further, each of these electric valves 13a ₁ and 13
The a ₂ , 13b, 14a ₁ , 14a ₂ and 14b are connected to the control device 15 as shown by the chain line in FIG.

This embodiment is constructed as described above. Next, the operation of the bath filtration device A will be described.

The bath filtration device A is operated with the strainer tubes 26 fitted in the respective filtration devices a and b.
That is, the strain tube 26 is fitted into the insertion hole 36 of the first partition plate 37, and the peripheral edge 29 of the upper plate 31 of the strain tube 26 is inserted into the insertion hole 36.
The abutment portion 28 formed around the
The bottom plate 25 is brought into contact with the peripheral edge of the through hole 30 'of the second partition plate 37'. In this way, the strainer cylinder 26
When the circulating pump 11 is operated after fitting into, the bath filtration device A automatically repeats the filtration of hot water in the bathtub 10 and the backwashing of the filters a and b by the timer of the control device 15. .

In this case, the timer of the control device 15 first opens the sewage inlet 20 of the filter a and the electric valves 13a ₂ and 14a ₂ of the filtered water outlet 21 at the time of filtration, and the backwash water inlet 23 and the backwash water 23. Water outlet 22 and dirty water inlet 20 of filter b
And electrically operated valves 13a ₁ , 13b, 14 of the filtered water outlet 21
closing and a _1, 14b. Then, the hot water in the bathtub 10 is filtered by the filter a by the operation of the circulation pump 11. At this time, the hot water in the bathtub 10 introduced from the dirty water inlet 20 of the filter a is prevented from flowing into the side of the strainer tube 26 by the upper plate 31, as shown in FIG.
Further, it flows into the inside of the inner net 32, flows out to the outer periphery of the outer net 33 via the filter medium 34, and flows out from the filtered water outlet 21. At this time, a large suspended matter such as hair is scraped off by the inner net 32, and a suspended matter smaller than the hair etc. passing through the mesh is adsorbed by the filter medium 34. At this time, the "medicine" of the filter medium 34 dissolves many mineral components into the filtered water, and at the same time, living contaminants such as ammonia in the wastewater are decomposed by the action of the microorganisms attached to the irregularities of the medicinal stone, and the filtered water. It also improves BOD. Thus filtered,
The hot water flowing out from the filtered water outlet 21 is introduced into the filtration tank 12 by the circulation pump 11, and again the filtration tank 1
The hot water activated by the high-grade filtration by the biotreatment similar to that described above by the "medicine" in 2 is used in the bathtub 10
It is returned to and is always kept clean. Further, at this time, when the temperature of the circulating hot water is lowered, it is heated by the boiler and the hot water temperature is also kept constant. Further, at this time, the hot water is sterilized by the ozone ejected from the control device 15 to the bathtub 10.

The filtration is carried out in this way, and the inner net 32 of the strainer cylinder 26 will be clogged by the suspended matter such as the filtered hot water and the contaminants, and the filtration capacity will be lowered. When the time elapses, the timer times out, and the time-out output causes the filter a
Electric valve 13 for sewage inlet 20 and filtered water outlet 21
a ₂ and 14 a ₂ are closed, while electric valves 13 b and 14 b of the dirty water inlet 20 and the filtered water outlet 21 of the filter b and the electrically operated valves 14 a _{1 of the} backwash water inlet 23 and the backwash water outlet 22 of the filter a. , 13a ₁ are opened. Therefore, the bathtub 10
As shown in FIG. 7C, the hot water is introduced from the sewage inlet 20 of the filter b, and the hot water introduced by the upper plate 31 and the first and second partition plates 37, 37 '. Strainer 2
The inflow to the six side portions is blocked, the water flows into the inside of the inner net 32 through the introduction hole 30, flows out to the outer periphery of the outer net 33 through the filtering material 34, is filtered, and flows out from the filtered water outlet 21. The hot water flowing out from the filtered water outlet 21 in this way is circulated by the circulation pump 11
At the same time, it is returned from the filtration tank 12 to the bath 10 via the, and at the same time, a part thereof is introduced into the backwash water inlet 23 of the filter a. The backwash water introduced into the filter a is, as shown in FIG. 6B, the first partition plate 37 and the second partition plate 37 'which are in contact with the upper plate 31 and the bottom plate 25 of the strainer tube 26. With, the outflow of both partition walls 37, 37 'is blocked, and the outer net 33
From the outer circumference of the second partition plate 3 through the inner side of the inner net 32.
It flows out from the first backwash water outlet 22 through the through hole 30 ′ of 7 ′ and is discharged from the drain pipe 17. In addition, at this time, a part of the backwash water introduced from the backwash water inlet 23 passes through the outer periphery of the outer net 33 of the strainer tube 26 to the second backwash water outlet 2
It flows out from 2'and is drained from the drain pipe 17. At this time, dirt adhering to the filter material 34 and suspended matter such as hair scraped off by the inner net 32 are washed away by the backwash water, and dirt attached to the outer net 33 also flows around the outer net 33. Since it is washed away by washing water, the clogging of the strain net 28 is eliminated. When the preset backwash time elapses, the timer expires, and the output of the timer causes the filter a
Electric valve 13 for sewage inlet 20 and filtered water outlet 21
a ₂ and 14 a ₂ are opened, and the backwash water inlet 23 of the filter a is
And the first and second backwash water outlets 22 and 22 ′, the dirty water inlet 20 of the filter b and the electric valve 13 a ₁ of the filtered water outlet 21,
13b, 14a ₁ and 14b are closed, and the state of filtration by the filter a is switched again. Then, a predetermined filtration time has elapsed, again timer times, in the same manner as described above, the electric valves _{13a, 13a 2, 13b, 14a} 1,
14a ₂ and 14b are switched, and backwashing is repeated.

As described above, the filtering device A is the same as the filtering device a.
The back washing can be continuously performed without stopping the filtration of the bath 10. At this time, since the filter b merely substitutes the short-time filtration during backwashing of the filter a, dust and the like are not attached to the strainer tube 26, and backwashing may not be performed for a long time. Therefore, in the embodiment, the filter b is not provided with the backwash water inlet 23 and the backwash water outlet 22, but the filter b has the same backwash water inlet as the filter a according to the present invention. 23 and a backwash water outlet 22 are used, an electric valve is attached to the backwash water inlet 23 and the backwash water outlet 22, and a backwash water source is connected to the backwash water inlet 22 via the electric valve. Then, the electric valve is operated by a timer to filter b.
It may be possible to carry out backwashing.

In the present embodiment, the strain tube 26 has been described as the inner net 32 and the outer net 33 formed in a roll shape, but the present invention is not limited to this, and other strain tubes are also possible. The inner net 32 and the outer net 33 of 26 are the rectangular parallelepiped as shown in FIG.
The shape can be changed to match the shape of 0.

[0040]

[Effect] Since the present invention is configured as described above and the back cylinder of the strainer of the filter can be back-washed, it is not necessary to manually clean the strain cylinder, and this cleaning can be performed easily and hygienically.

For this reason, since it is possible to repeatedly use the strainer without replacing the strainer, the running cost can be greatly reduced.

Further, since the strainer tube is made to be able to be filtered by using the filter material, the cleanliness of the treated water to be filtered can be improved.

At this time, especially when "medicinal stones" are used as the filtering material, many mineral components are eluted into the filtered water during the filtering, so that, for example, a medicinal effect similar to that of a hot spring is produced.

Further, in the case where two filters are used in parallel, when one filter is backwashed, the other filter is used,
Since the filtration can be performed without stopping the circulation of hot water, the bath can always be kept in a bathable state.

Further, at this time, if the backwash can be performed by the timer, the backwash can be automatically performed.
Maintenance costs can be reduced because manpower for management can be significantly reduced. In addition, at that time, the backwashing time can be changed by arbitrarily selecting the timer setting time, for example, according to the dirt of hot water that changes depending on the number of bathers, so always keep the hot water clean regardless of the number of bathers. You can

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a bath filtration device according to an embodiment.

FIG. 2 is a schematic diagram showing connections between respective constituent members of the embodiment.

FIG. 3 (a) is a plan view of a strain tube according to an embodiment, (b) is a longitudinal sectional view thereof, and (c) is a bottom view thereof

4A is a plan view of an outer peripheral container of the embodiment, FIG. 4B is a left side view of the same, FIG. 4C is a right side view of the same, and FIG.

FIG. 5 is a function diagram of the outer peripheral container of the embodiment.

FIG. 6 is an operation diagram of the filter according to the embodiment.

[FIG. 7] Same as above

FIG. 8 (a), (b) another embodiment of a strainer tube

FIG. 9 is a sectional view of a conventional example.

[Explanation of symbols]

10 Bathtub 11 Circulation pump 11a Circulation pump suction port 11b Circulation pump discharge port 13a ₁ , 13a ₂ , 13b, 14a ₁ , 14a ₂ , 1
4b Electric valve 16 Control device (timer) 20 Sewage inlet 21 Filtered water outlet 22 Backwash water outlet 23 Backwash water inlet 24 Outer peripheral container 25 Bottom plate 26 Strain cylinder 28 Contact part 29 Outer peripheral edge of upper plate 30 Inlet hole 30 'Through Hole 31 Upper plate 32 Inner net 33 Outer net 34 Filter material (medicine) 36 Insertion hole 37 First partition plate 37 'Second partition plate

Claims (4)

[Scope of utility model registration request] 1. A strain cylinder and an outer peripheral container into which the strain cylinder is fitted, wherein the strain cylinder has an upper plate having an introduction hole formed in the center and a bottom plate having a diameter smaller than that of the upper plate facing each other. An inner net having both ends attached along the circumference of the introduction hole and an outer net surrounding the inner net are provided between the opposed upper and bottom plates, and a filter medium is provided between the inner net and the outer net. On the other hand, in the outer peripheral container, an insertion hole into which the strain cylinder is inserted is formed in the center, and an abutting portion with which the peripheral edge of the upper plate of the strain cylinder contacts is formed around the insertion hole. A first partition plate and a through hole formed in the center, and a bottom plate of a strain tube fitted in the first partition plate around the through hole contacts the second partition plate.
The partition wall of the first partition wall, and the inside of the partition wall is partitioned, and a filtered water outlet and a backwash water inlet are provided between the first and second partition plates.
And a filter provided with a waste water inlet and a backwash water outlet on the outside of the second partition plate. 2. The filter according to claim 1, wherein the filter medium is a medicinal stone containing a mineral component. 3. Two filters are provided in parallel, one or both of the filters are the above filters, these filters are respectively connected to a bath, and one of the filters filters hot water in the bath. The bath filtration device using the filter according to claim 1 or 2, wherein, when the filter is backwashed, the other filter filters the hot water in the bathtub. 4. A bath filtration device using a filter according to claim 3, further comprising timer means for switching the filter at a predetermined cycle.