JPH05295A - Purifier of bathtub - Google Patents

Abstract

PURPOSE:To effectively purify the filter material in a biological filter tank. CONSTITUTION:The water suction port 2 and water emitting port 3 of a bathtub 1 are connected by a circulating passage 4. A biological filter tank 5 is arranged on the way of the circulating passage 4 and the filter materials 6 in the biological filter tank 5 are provided in a multistage fashion. At the time of backwashing, by whirling the filter materials 6 of respective stages upwardly to wash the same, the filter materials 6 can be effectively washed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub purifying apparatus which filters hot water in a bathtub and returns it to the bathtub so that it is not necessary to replace the water for a long period of time.

[0002]

2. Description of the Related Art Conventionally, it is known that a suction port and a water discharge port provided in a bathtub are connected by a circulation flow path, and a biological filtration tank is arranged in the middle of the circulation flow path. Then, as a method for cleaning the dirt accumulated on the filter medium in the biological filtration tank, the filter medium is taken out from the biological filtration tank and washed by a human hand, or the direction opposite to the filtration cleaning in the biological filtration tank is performed. There is a method of removing the contaminants from the system by backwashing by circulating water to the system, or a method of mixing backwash water with air by an air pump and backwashing with so-called air-mixed water.

[0003]

However, the method of taking out the filter medium from the biological filtration tank and washing it by human hands has a problem in that it looks bad in terms of hygiene, takes time, and is poor in maintainability. Also, since the filter material for biological filtration needs to be porous, it is usually a ceramic ball or the like,
The diameter is large from 5 mm to 10 mm, and because it is heavy,
There was a problem that it was difficult to wash out the dirt from the system only by backwashing by flowing water in reverse. Further, if the backwash water is mixed with air by an air pump and the filter medium is washed with so-called air-mixed water, the backwash efficiency can be increased, but there is still a problem that it cannot be said that the washing is still sufficient. ..

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a bathtub cleaning apparatus capable of effectively cleaning the filter medium in the biological filtration tank. To provide.

[0005]

In the bathtub purifying apparatus of the present invention, a suction port 2 and a water discharge port 3 provided in a bathtub 1 are connected by a circulation flow path 4, and biological filtration is performed in the middle of the circulation flow path 4. It is characterized in that the tank 5 is arranged and the filter medium 6 in the biological filtration tank 5 is formed in multiple stages. By adopting such a configuration, the problems of the conventional example described above are solved. The object of the present invention is achieved.

[0006]

The filter medium 6 in the biological filtration tank 5 is multi-staged, so that when the filter medium 6 in the biological filtration tank 5 is backwashed, if it is backwashed with air-mixed water, the filter medium 6 rises up in each stage. Thus, the dirt accumulated by rubbing the filter media 6 against each other can be sufficiently discharged to the outside of the system.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. The side wall of the bathtub 1 has a suction port 2 and a spout 3
And are provided. The suction port 2 and the water discharge port 3 provided in the bathtub 1 are connected by a circulation flow path 4. Circulation channel 4
A pump 7 and a biological filtration tank 5 are arranged in this order from the suction port 2 side to the water discharge port 3 side. Biological filtration tank 5
On the inlet 8 side of the circulation passage 4, there is provided a discharge portion 9 branching from the circulation passage 4, and a first switching valve 10 composed of a three-way valve is provided at this branch portion. In addition, a branch passage 12 that branches from the circulation passage 4 is provided on the outlet 11 side of the circulation passage 4 of the biological filtration tank 5, and a second switching valve 13 that is a three-way valve is provided at this branch portion. The other end of the branch passage 12 communicates with a portion of the circulation passage 4 above the inlet 8 of the biological filtration tank 5 above the water. An air supply pipe 14 is connected to the branch passage 12, and the two-way valve 1 is connected to the air supply pipe 14.
5, an air pump 16 is provided. The inside of the biological filtration tank 5 is partitioned by a support net 18 into a plurality of upper and lower chambers 17, and a filter medium 6 is placed in each room 17 and placed on a support net 18 made of a perforated plate. .. in this case,
The filter medium 6 is inserted between the filter medium 6 and the upper support net 18 so that a gap is formed as shown in the figure.

However, during filtration and cleaning, as shown in FIG. 2, the first switching valve 10 and the second switching valve 13 are switched, the two-way valve 15 is closed, and the pump 7 is operated in this state. The hot and cold water in the bathtub 1 flows through the suction port 2, the pump 7, the inlet 8 of the biological filtration tank 5, the biological filtration tank 5, the outlet 11 of the biological filtration tank 5, and the spout 3 as indicated by the arrow.
When it is returned to the inside, and when passing through the biological filtration tank 5, it is filtered and purified by the filter media 6 provided in the upper and lower stages.

On the other hand, in order to wash the filter medium 6 of the biological filtration tank 5, the first switching valve 10 and the second switching valve 13 are switched as shown in FIG. 1 to provide a flow as shown by the arrow in FIG. In this case, the two-way valve 15 is opened, the air pump 16 is operated, so-called air-mixed water in which washing water and air are mixed flows from the outlet 11 of the biological filtration tank 5, and the filter medium 6 is mixed with the air in each stage. Soared by water,
At each stage, the filter media are rubbed against each other to remove the dirt accumulated on the filter media, and the dirt is discharged from the inlet 8 of the biological filtration tank 5 to the discharge part 9 by the air mixed water and discharged to the outside of the system.

In this way, the filter media 6 necessary for filtration are arranged in multiple stages. If the same amount of filter media is put in one place as in the conventional case, it is backwashed with air-mixed water at the time of backwashing. Even if it is attempted to raise it, it is not possible to raise the filter medium 6 sufficiently because there is a large amount of filter medium 6 in one place, but if the filter medium 6 necessary for filtration is arranged in multiple stages as in the present invention, Since the amount of the filter medium 6 is small, it can be efficiently backwashed by backwashing with air-mixed water at the time of backwashing and dirt can be removed.

[0011]

According to the present invention, as described above, the suction port and the water discharge port provided in the bathtub are connected by a circulation flow path,
Since the biological filtration tank is arranged in the middle of this circulation channel and the filter medium in the biological filtration tank is multi-staged, when backwashing the filter medium in the biological filtration tank, for example, by backwashing with air mixed water However, it is possible to sufficiently flow up the dirt that has accumulated in each step due to the rubbing of the filter media with each other to the outside of the system, and it is possible to efficiently remove the dirt of the filter media by backwashing.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state in which a filter medium of a biological filtration tank is back-washed in a bath cleaning apparatus of the present invention.

FIG. 2 is an explanatory diagram showing a state in which hot water in the bathtub is circulated for purification.

[Explanation of symbols]

 1 Bathtub 2 Suction port 3 Water discharge port 4 Circulation flow path 5 Biological filtration tank 6 Filter medium

[Procedure amendment]

[Submission date] October 7, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. The side wall of the bathtub 1 has a suction port 2 and a spout 3
And are provided. The suction port 2 and the water discharge port 3 provided in the bathtub 1 are connected by a circulation flow path 4. Circulation channel 4
A pump 7 and a biological filtration tank 5 are arranged in this order from the suction port 2 side to the water discharge port 3 side. Biological filtration tank 5
On the inlet 8 side of the circulation passage 4, there is provided a discharge portion 9 branching from the circulation passage 4, and a first switching valve 10 composed of a three-way valve is provided at this branch portion. In addition, a branch passage 12 that branches from the circulation passage 4 is provided on the outlet 11 side of the circulation passage 4 of the biological filtration tank 5, and a second switching valve 13 that is a three-way valve is provided at this branch portion. The other end of the branch passage 12 communicates with a portion of the circulation passage 4 above the inlet 8 of the biological filtration tank 5 above the water. An air supply pipe 14 is connected to the branch passage 12, and the two-way valve 1 is connected to the air supply pipe 14.
5, an air pump 16 is provided. Inside the biological filtration tank 5
The support plate 18 made of a perforated plate has a plurality of upper and lower rooms 1
The filter material 6 is placed in each of the chambers 17 on each level, and is placed on a support plate 18 made of a perforated plate . In this case, the filter medium 6 is inserted between the filter medium 6 and the upper support plate 18 so that there is a gap as shown in the figure.

Claims (1)

Claim: What is claimed is: 1. A suction port and a discharge port provided in a bathtub are connected by a circulation flow path, and a biological filtration tank is arranged in the middle of the circulation flow path, and a filter medium in the biological filtration tank. A bathtub purifying device characterized by comprising a plurality of stages.