JPH0652913U - Filter and bath filtration device using the filter - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a filter for a bath, which can be backwashed to save the labor of cleaning and improve maintainability. [Structure] An upper container 31 and a bottom member 25 having an introduction hole 30 formed in the center are opposed to each other, and an outer container 24 having an inner net 32 and an outer net 33 interposed therebetween is inserted into an outer peripheral container 24. The first partition wall plate 37 and the second partition wall plate 37 ′ that support 26 and partition the inside are provided, and the filtered water outlet 21 and the backwash water inlet 23 are provided between the partition wall plates 37 and 37 ′. 37, 3
A sewage inlet 20 and a backwash water outlet 22 are provided outside 7 '. At the time of filtration, the backwash water inlet 23 and the backwash water outlet 22 are closed, and the wastewater introduced from the wastewater inlet 20 is introduced into the introduction hole 30 →
The inner net 32 → the outer net 33 → the filtered water outlet 21 is caused to flow, and at the time of backwashing, the sewage inlet 20 and the filtered water outlet 21 are closed, and the wash water introduced from the backwashing water inlet 23 is the outer net 33 → the inner net. 32 →
It flows to the backwash water outlet 22.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filter suitable for removing dirt from hot water in a bathtub and a bath filter device using the filter, and more particularly, to a filter which can be backwashed and has improved maintainability. The present invention relates to a bath filter device using a filter.

[0002]

[Prior art]

 Facilities such as factories, dormitories, hospitals and inns that have 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 desired to keep the bath available at any time, but the water and fuel costs are high and the management is too expensive.

As one solution to these problems, hot water is replaced by connecting the bathtub and the filter through a circulation pump, circulating the hot water in the bathtub through the filter, and removing the dirt from the hot water. There is a system that eliminates the need to reheat and reduces the fuel and water bills due to re-boiling, and also eliminates the need to clean the bath tub every day while allowing you to take a bath at any time.

The filter used for such an application is, for example, as shown in FIG. 9, composed of an outer peripheral container 4 provided with an openable and closable upper lid 3 and a strain tube 5 fitted in the outer peripheral container 4. The outer peripheral container 4 is provided at its side with a sewage inlet 1 to which a connecting pipe to the bathtub is connected and a filtered water outlet 2 to which a connecting pipe from the circulation pump is connected. Further, the strainer cylinder 5 is a cage-shaped wire mesh, and when the hot water in the bathtub is caused to flow from the dirty water inlet 1 to the filtered water outlet 2, dirt of the hot water is strained by the wire mesh of the strainer cylinder 5. It is supposed to be removed.

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

[0009]

[Problems to be solved by the device]

 However, with the above filter, it is necessary to open the lid of the outer container every time the cleaning is performed, remove the inner tube, and manually remove dust such as hair adhering to the inner tube. Not only that, but it is also extremely unsanitary, so there is a problem that bath managers are reluctant to clean it.

Further, since the circulation of hot water is stopped during the cleaning, there is a problem that it is impossible to take a bath.

Therefore, an object of the present invention is to provide a filter which can be easily and hygienically cleaned, and at the time of cleaning, 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]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the present invention, a strainer comprises a strainer tube and an outer peripheral container into which the strainer tube is fitted, and the strainer tube has an upper plate with an introduction hole formed in the center and an upper plate. A bottom plate having a smaller diameter than the plate is opposed, and 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. A filter material is filled between the inner net and the outer net, while the outer container has an insertion hole formed at the center in which the cylinder is inserted, and the insertion hole around the insertion hole of the upper plate of the cylinder is formed. A first partition plate having an abutting portion in contact with the peripheral edge and a through hole formed in the center, and a bottom plate of a strain tube fitted into the first partition plate around the through hole is in contact with the first partition plate. The inside is partitioned by the second partition plate, and the filtering water outlet and backwash are provided between the first and second partition plates. Inlet is provided, 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 filtering material may be a stone containing a mineral component.

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

At that time, it is possible to adopt a configuration including a timer means for switching the filter at a predetermined cycle.

[0016]

[Action]

 In the filter configured as described above, when the hollow cylinder filled with the filtering material 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 container, the upper plate of the hollow cylinder is inserted. The peripheral edge of the first partition 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 strain tube and the through hole of the second partition plate communicate with each other, and the strain tube is supported by both partition plates. At the same time, the inside of the outer peripheral container is divided into the inside and the outside of the first and second partition plates via the strain cylinder. In this state, the backwash water inlet and backwash water outlet are closed, and when sewage is made to flow in from the sewage inlet, the sewage that flows in abuts the first or second partition plate and the partition plate. The upper plate and the bottom plate prevent the inflow to the side of the strainer cylinder, are introduced inside the inner net through the introduction holes, flow out to the outer perimeter of the outer net through the filter medium, and flow out from the filtered water outlet. At this time, of the suspended solids of sewage, for example, large ones such as hair are scraped off by the inner net, and further, dust smaller than hair etc. that has passed through the mesh is collected on the filter between the inner net and the outer net. Will be removed.

When the straining 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 the wash water is introduced from the backwash water inlet, the inflowing wash water is separated by the first and second partition plates and the upper and bottom plates of the cylinder into the first and second partition plates. Inflow to the outside is blocked, and it flows from the periphery of the outer net to the inside of the inner 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. It 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 by this washing water are washed away, and the inner net and the filter medium are washed.

Further, in the case where a medicinal stone is used as the filter medium, the medicinal stone dissolves many mineral components in filtered water during filtration. On the other hand, the mineral content also activates the action of microorganisms adhering to the irregularities of the medicinal stone, and promotes decomposition of daily pollutants such as ammonia in wastewater.

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, and the other filter is switched and used when backwashing the filter. By doing so, backwashing is carried out without interruption of filtration, and the bath is maintained in a state where it can always be used.

Further, at this time, in the case of having the timer means, backwashing is automatically performed periodically without any manual operation, and the filter is always kept clean.

[0021]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a bath filtration device A using a filter a according to the present invention. Further, FIG. 2 schematically shows the connection between the main constituent members of the filtration device A.

This bath filtration device A includes two filters a and b connected in parallel with the bath 10, a circulation pump 11 connected to the filters a and b, the pump 11 and the bath 10. a filtrate tank 12 connected between the tub 10 and the filter a, b and filters a, b and circulation pump electric valve 13a provided between _{11 1, 13a 2, 13b,} 1 4a 1, 14a 2 , 14b and timers for operating the electric valves 13a ₁ , 13a ₂ , 13b, 14a ₁ , 14a ₂ , 14b, and the control device 15 for ejecting ozone into the bath 10, the filtration tank 12, and the bath 10. A part of the hot water circulated from the filtration tank 12 to the bathtub 10 is bypassed, and the bypassed hot water is heated and returned to the bathtub 10 to keep the hot water temperature constant. Has become.

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.

As shown in FIGS. 3 (a), 3 (b), and 3 (c), the strain tube 26 has a square upper plate 31 having an introduction hole 30 formed in the center and a smaller diameter than the upper plate 31. The donut plate-shaped bottom plate 25 is opposed to the inner plate 32. The inner net 32 is attached between the upper plate 31 and the bottom plate 25 at both ends along the circumference of the introduction hole 30 and the outer net surrounding the inner net 32. A net 33 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.

In the present embodiment, metal punching boards were used for the inner net 32 and the outer net 33, but other than this, resin or metal wire nets may be used.

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

On the other hand, the outer peripheral container 24 shown in FIGS. 4A, 4B, and 4C is provided with a first partition plate 37 and a second partition plate 37 ′ inside 38. .

In the first partition plate 37, an insertion hole 36 into which the strain tube 26 is fitted is formed in the center, and a peripheral edge 29 of the upper plate 31 of the strain tube 26 is formed around the insertion hole 36. An abutting portion 28 that contacts is formed.

Further, the second partition plate 37 ′ provided below the first partition plate 37 has a through hole having a diameter approximately twice that of the through hole 30 of the strain tube 26 at the center thereof. When the strain tube 26 is fitted into the first partition plate 37, the outer peripheral edge 29 of the upper plate 31 has an abutting portion around the first partition plate 37, as shown in FIG. 28, and the bottom plate 25 comes into contact with the periphery of the through hole 30 'of the second partition plate 37'.

In these peripheral containers 24, a waste water inlet 20 is provided outside the first partition plate 37, and filtered water is provided between the first and second partition plates 37 and 37 ′. Exit 21 is provided. Further, the filter a according to the present invention is provided with a first backwash water outlet 22 outside the second partition plate 37 ', and a backwash water inlet is provided between the partition plates 37, 37'. 23 are provided. In addition, in this embodiment, a second backwash water outlet 22 'for removing dust adhering to the outer net 33 is provided between the partition plates 37, 37' of the filter a. There is.

As shown in FIG. 2, the sewage inlet 20 of each of the filters a and b is connected to the bathtub 10 in parallel by a pipe through electric valves 13a ₂ and 13b, and the filtered water outlet 21 is electrically operated. A pipe is connected in parallel with the suction port 11a of the circulation pump 11 via the valves 14a ₂ and 14b. The outlet 11b of the circulation pump 11 is connected to the bath 10 via the filtration tank 12 filled with the “medicine”, so that the bath 10 → filter a, b → circulation pump 11 → filtration tank 12 → A circulation path for filtration called a bath 10 is formed. 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 through the electric valve 14a ₁ so that the hot water of the filtered bath 10 discharged from the circulation pump 11 is discharged. Is partially supplied to the filter a as a washing water source. The supplied washing water is discharged from the first and second backwash water outlet 2 2, 22 'connected in parallel via the electric valve 13a ₁ to the drainage pipe 1 7 drained.

Further, each of the electric valves 13a ₁ , 13a ₂ , 13b, 14a ₁ , 14a ₂ , 14b is connected to the controller 15 as shown by the chain line in FIG.

This embodiment is configured as described above, and next, the operation of this 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 strainer 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 strainer tube 26 is brought into contact with the contact portion 28 formed around the insertion hole 36. The bottom plate 25 of the strain tube 26 is brought into contact with the peripheral edge of the through hole 30 'of the second partition plate 37'. In this way, when the circulation pump 11 is actuated after fitting the straining tube 26 into the outer peripheral container 24, the bath filtration device A causes the timer of the control device 15 to filter and filter hot water in the bathtub 10. Repeat backwashing of the vessels a and b automatically.

In this case, at the time of filtration, the timer of the controller 15 first opens the dirty water inlet 20 of the filter a and the electric valves 13a ₂ and 14a ₂ of the filtered water outlet 21, and reverses the backwash water inlet 23. The washing water outlet 22 and the dirty water inlet 20 of the filter b and the electric valves 13a ₁ , 13b, 14a ₁ , 14b of the filtered water outlet 21 are closed. Then, by operating the circulation pump 11, the hot water in the bathtub 10 is filtered by the filter a. 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 through 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. that has passed through the mesh is adsorbed by the filter medium 34. At this time, the “medicine” of the filtering material 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 microbes attached to the irregularities of the medicinal stone and filtered. It also improves the BOD of water. The hot water filtered in this way and flowing out from the filtered water outlet 21 is introduced into the filtration tank 12 by the circulation pump 11, and again, high-grade filtration by the “medicine” in the filtration tank 12 by the same biotreatment as described above. The activated hot water is returned to the bathtub 10 to keep it clean at all times. At this time, if the temperature of the circulating hot water drops, it is heated by the boiler and the hot water temperature is kept constant. Further, at this time, the hot water is sterilized by the ozone ejected from the control device 15 into the bath 10.

The filtration is performed in this way, and the inner net 32 of the strainer cylinder 26 will be clogged with suspended matter such as filtered hot water dust and contaminants, which will reduce the filtering ability. When the filtration time elapses, the timer expires, and the time-out output closes the electric valves 13a ₂ and 14a ₂ of the wastewater inlet 20 and the filtrated water outlet 21 of the filter a, while the wastewater of the filter b is discharged. The electric valves 13b and 14b at the inlet 20 and the filtered water outlet 21 and the electric valves 14a ₁ and 13a _{1 at the} backwash water inlet 23 and the backwash water outlet 22 of the filter a are opened. Therefore, the hot water in the bathtub 10 is introduced from the dirty water inlet 20 of the filter b as shown in FIG. 7C, and the hot water introduced is mixed with the upper plate 31 and the first and second partition plates 37. , 37 'prevent the inflow to the side of the strainer tube 26, flow into the inner net 32 through the introduction hole 30, flow out to the outer periphery of the outer net 33 through the filter material 34, and are filtered. It flows out from the water outlet 21. The hot water flowing out from the filtered water outlet 21 is returned from the filtration tank 12 to the bath 10 via the circulation pump 11, and at the same time, part of the hot water 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. By this means, both partition walls 37, 37 'are prevented from flowing out, and pass from the outer periphery of the outer mesh 33 through the inner mesh 32 and through the through hole 30' of the second partition plate 37 '. It flows out from the first backwash water outlet 22 and is discharged from the drain pipe 17. Further, at this time, a part of the backwash water introduced from the backwash water inlet 23 flows out from the second backwash water outlet 22 ′ through the outer periphery of the outer net 33 of the strainer tube 26 and is discharged from the drain pipe 17. Be drained. 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 adhering to the outer net 33 also spreads around the outer net 33. Since it is washed away by the flowing backwash water, the clogging of the strain net 28 is eliminated. Then, when the preset backwash time elapses, the timer expires, and the output thereof opens the electric valves 13a ₂ and 14a ₂ of the dirty water inlet 20 and the filtered water outlet 21 of the filter a, and the filter a The backwash water inlet 23 and the first and second backwash water outlets 22 and 22 'and the electric valves 13a ₁ , 13b, 14a ₁ and 14b of the dirty water inlet 20 and the filtered water outlet 21 of the filter b are closed, The state of filtration by the filter a is switched again. Then, a predetermined filtration time has elapsed, again the timer times, in the same manner as described above, switching the electric valves 13a, 13a _2, 13b, and 14a _1, 14a _2, 14b, performed repeatedly backwashing.

As described above, in the filtration device A, backwashing of the filtration device a can be continuously performed without stopping the filtration of the bathtub 10. At this time, since the filter b merely serves as a substitute for the short-time filtration during the backwashing of the filter a, dust and the like are not attached to the strainer tube 26 and the 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. However, the electric valve may be operated by a timer so that the filter b can be backwashed.

In the present embodiment, the strain tube 26 has been described as the one in which the inner net 32 and the outer net 33 are formed in a roll shape, but the present invention is not limited to this, and other strain tubes The inner net 32 and the outer net 33 of 26 can be changed to a shape corresponding to the shape of the introducing hole 30 such as a rectangular parallelepiped as shown in FIG. 8A or a triangular prism as shown in FIG. 8B.

[0040]

【effect】

 Since this invention is configured as described above and the back cylinder of the strainer of the filter can be backwashed, 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 cylinder without replacing it, the running cost can be significantly reduced.

Further, since the strained cylinder is made to be able to be filtered by using the filtering 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 filtration, so that, for example, it has the same medicinal effect as that of the hot spring.

Further, in the case where two filters are used in parallel, when one filter is backwashed, the other filter can be used to perform filtration without stopping circulation of hot water. The bath can always be kept ready for bathing.

In addition, at this time, in the case where the backwash can be performed by the timer, the backwash can be automatically performed, so that the manpower for management can be significantly reduced and the maintenance cost can also be reduced. In addition, at that time, the backwashing time can be changed by arbitrarily selecting the set time of the timer, for example, in accordance with the dirt of hot water that changes depending on the number of bathers, so keep the hot water always 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

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location B01D 29/62

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.