JPH11285605A - Bathtub water cleaning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve fixation prevention and performance to suppress and remove slime by an improvement in the agitation characteristic of a filter medium by providing the apparatus with a washing water ejection nozzle for washing the inside of a filter cylinder and providing the apparatus with a guide member for guiding the horizontal jet from the washing water ejection nozzle. SOLUTION: The backwashing stream flowing from below the nozzle 9 at the time of backwashing is nearly evenly divided to the water blowing out of a lower ejection part 14 and the water blowing out of an upper ejection part 13 through mesh 10 to be ejected nearly horizontally. The jet from the lower ejection part 14 arrives at a guide ring 15 as the guide member installed on the inside wall surface of the filter cylinder 6 while washing the rear surface of the mesh 10 and is thereafter lifted upward and is utilized for fixation suppression by the improvement in the agitation characteristic of the filter medium consisting of active carbon 7 and glass beads 8 in the outer peripheral part of the front surface of the mesh 10. The jet from the upper ejection part 13 washes the surface of the mesh 10 and simultaneously agitates and washes the filter medium consisting of the active carbon l7 and the glass beads 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub water purification apparatus for filtering fine dirt and impurities from bathtub water by a filter tube provided in a bathtub water circulation system. The present invention relates to a filter tube structure for efficiently using washing water from a washing water jet nozzle for washing the inside of a cylinder.

[0002]

2. Description of the Related Art Conventionally, a biofilm (hereinafter, referred to as a biofilm) attached to a filter
As shown in FIG. 6, the cleaning method of the filter tube, which is performed to prevent thickening of the slime) and maintain the purification performance, includes a filter tube 100 in a direction opposite to that in a normal purification operation.
The cleaning water is spouted from the spout nozzle 101 provided in the
Backwashing was performed to pass water through the filter medium 102.

[0003] Also, air mixed with air at the time of backwashing with water.
During backwashing and water backwashing, stirring backwashing and the like, in which a filter medium in a filter tube is rotated by a stirrer or the like to bring the filter materials into contact with each other, are also performed.

[0004]

In water backwashing, the flow rate (water volume) at the time of backwashing cannot be increased due to the pumping ability and the prevention of the filtration material flowing out of the system during the filtration material cleaning. In many cases, and when the backwash flow rate is limited, the jet velocity from the nozzle is limited, so the jet at the circumference of the filter cylinder farthest from the nozzle is attenuated compared to the vicinity of the nozzle, In addition, as shown in FIG. 7, the effective use efficiency of the amount of backwash water that branches up and down at the circumferential portion and is used for stirring the filter medium is deteriorated.

[0005] The poor fluidity of water has the drawback that the filter media adhere to each other, the filter media and the mesh, and slime adheres to the lower corners of the mesh. It promotes thickening of slime, which leads to a decrease in purification flow rate and a decrease in purification performance.In addition, an increase in slime becomes a hotbed of Legionella spp., Which may harm human health. When the slime is peeled off, there is a problem that a problem occurs that the slime flows out as it is as a foreign substance into the bathtub.

[0006]

Means for Solving the Problems and Their Functions and Effects To solve the above-mentioned problems, a bathtub water purifying apparatus of the present invention comprises a pump for circulating bathtub water, and a bathtub water purification device for removing impurities consisting of fine dust and dirt. And a guide member for guiding a horizontal jet from the washing water jet nozzle to the fluid to be jetted, the washing water jet nozzle for washing the inside of the filter tube. Is provided.

As described above, by guiding the horizontal jet from the washing water jet nozzle to a flow rate and a flow rate suitable for washing the fluid to be jetted, it is possible to prevent sticking by improving the agitating property of the filter material, suppress slime, The removal performance is improved.

[0008] The jetting part of the washing water jetting nozzle is
If the guide member is provided below the filter medium support in the filter tube and the guide member is provided on the peripheral surface of the filter tube opposite to the ejection section, the slime that easily adheres to the circumferential portion on the lower surface of the filter medium support is provided. Since they can be suppressed and removed, they have the effect of preventing harmful bacteria from becoming a hotbed.

[0009] The jetting portion of the washing water jetting nozzle may include:
If the guide member is provided above the filter medium support in the filter tube and the guide member is provided on the peripheral surface of the filter tube facing the jetting portion, the flow velocity at the circumferential corner of the horizontal jet from the washing water jet nozzle To increase the agitation of the filter media and prevent sticking, so that long-term stability of purification performance is obtained,
Sanitary bathtub water can be maintained.

[0010] The jetting part of the washing water jetting nozzle is
If the guide member is provided below and below the filter medium support in the filter tube, and the guide member is provided on the peripheral surface of the filter tube facing the ejection portion, the use of one guide member suppresses, removes, and filters the slime. The agitation of the material can be enhanced to prevent sticking.

Further, the washing water jet nozzle is provided substantially at the center of the filter medium support, and the guide member is configured such that the cross-sectional area of the filter tube is smaller at the lower side than at the upper side. For example, it is possible to prevent a decrease in the flow velocity in the circumferential portion of the filter tube with a simple structure.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an overall configuration diagram of a bathtub water purifying apparatus 1 according to the present invention. During a purifying operation for purifying bathtub water, bathtub water in a bathtub 2 is sucked from a suction portion of a bus adapter 3 and a circulating pump. 4 is supplied at a pressure of 15 L / min and flows from the flow path switching valve 5 into the filtration tube 6. The filtration tube 6
Activated carbon 7 and glass beads 8 as filter media are supported and stored in a mesh 10 as a filter media support to which a nozzle 9 for ejecting bath water is fixed at the time of back washing described below. Organic substances are adsorbed and decomposed by the biofilm formed on the surface thereof, and suspended substances are captured by the glass beads 8.

Here, the structure of the filter cylinder 6 will be described in detail. The activated carbon 7 is a coconut shell raw activated carbon having a particle size of about 4 × 3 mm 600 cc (specific gravity 1.5), the glass beads 8 contain 150 cc having a particle size of 0.8 mm, and the mesh 10 is made of SUS304 # 50. A Teflon coat having a linear diameter of 0.25 mm is used, and the nozzle 9 has eight holes of 2 mm × 2 mm each above and below the mesh 10 as the upper ejection portion 13 and the lower ejection portion 14.

The bathtub water purified by the filter 6 is
After passing through the flow path switching valve 5, it is heated by the heater 11, sterilized by the sterilizing unit 12 containing the ultraviolet lamp, and then returned to the bathtub 2 from the discharge part of the bus adapter 3 again.

By repeatedly performing the above-described purification operation, the activated carbon 7 becomes a biofilm formed on the surface of the activated carbon, that is, a so-called biological activated carbon, and the biofilm is developed and thickened by the biopurification. Excessive biofilm causes problems such as a hotbed of various kinds of bacteria, clogging of the mesh 10 of the filter tube 6, and outflow to the bathtub 2. For this reason, the excessive biofilm is forcibly peeled off and discharged out of the system. Perform backwash.

At the time of back washing, as shown in FIG. 2, the flow path switching valve 5 is switched to the nozzle 9 direction, bathtub water is sucked in from the suction part of the bus adapter 3, and 15 L is supplied from the circulation pump 4.
/ Min, and flows from the flow path switching valve 5 into the nozzle 9 below the filtration tube 6.

The backwash flow flowing from below the nozzle 9 is:
The water spouted from the lower spout 14 and the water spouted from the upper spout 13 through the mesh 10 are almost equally divided,
Injected almost horizontally. When the backwash flow rate is 15 L / min, the jet velocity from the nozzle 9 is about 4 m / s.

The jet from the lower jetting portion 14 is lifted upward after reaching a guide ring 15 as a guide member installed on the inner wall surface of the filter cylinder 6 while washing the lower surface of the mesh 10 as shown in FIG. By improving the agitating property of the filter material comprising the activated carbon 7 and the glass beads 8 on the outer peripheral portion of the upper surface of the mesh 10, it is used for suppressing the sticking.

The jet from the upper jetting section 13 is
At the same time as washing the surface, the filter medium consisting of activated carbon 7 and glass beads 8 is stirred and washed.

As another embodiment of the guide ring 15 of the present invention, as shown in FIG. 4, when only the upper ejection portion 13 is provided in the nozzle 9, the guide ring 15 is meshed with a mesh 1.
It is also possible to further enhance the agitation and cleaning properties of the filtering material composed of the activated carbon 7 and the glass beads 8 by providing the filter only on the upper surface.

Further, as another embodiment, as shown in FIG. 5, a guide ring 15 is provided so as to be continuous with the upper and lower surfaces of the mesh 10, and the lower surface of the mesh 10 is washed by the jet flow from the lower jetting portion 14. By joining with the jet of the upper jet part 13, jet energy can be effectively given to the filter medium.

As described above, the filter medium composed of the activated carbon 7 and the glass beads 8 is washed by the running water jetted from the nozzle 9, and the separated slime is drained together with the floating contaminants into the upper part of the filter tube 6. It is discharged outside the system via the switching valve 5 (see FIG. 2).

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a bathtub water purification device according to the present invention.

FIG. 2 is an overall configuration diagram of the bathtub water purification device according to the present invention at the time of back washing.

FIG. 3 is a conceptual diagram of a guide ring in a filtration tube.

FIG. 4 is a conceptual diagram of another embodiment of the guide ring in the filtration tube.

FIG. 5 is a conceptual diagram of another embodiment of the guide ring in the filtration tube.

FIG. 6 is a schematic diagram of a filtration tube at the time of back washing of a conventional bathtub water purification device.

FIG. 7 is a conceptual diagram of a flow of water in a filtration tube at the time of back washing of a conventional bathtub water purification device.

FIG. 8 is a conceptual diagram of the inside of a filter cylinder after backwashing of a conventional bathtub water purification device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Bath water purifier 2 ... Bath tub 3 ... Bath adapter 4 ... Pump 5 ... Flow path switching valve 6 ... Filtration cylinder 7 ... Activated carbon (filtration material) 8 ... Glass beads (filtration material) 9 ... Nozzle (washing water jet nozzle) DESCRIPTION OF SYMBOLS 10 ... Mesh (filter material support) 11 ... Heater 12 ... Sterilization unit 13 ... Upper ejection part 14 ... Lower ejection part 15 ... Guide ring (guide member)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiro Tsuneda 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Tochiki Kiki Co., Ltd. (72) Inventor Naoto Wajima Nakajima, Kitakyushu-shi, Fukuoka 2-1-1, Totoki Kiki Co., Ltd.

Claims (5)

[Claims] 1. A bathtub water purification apparatus comprising: a pump for circulating bathtub water; and a filter tube for filtering impurities such as fine dust and dirt from the bathtub water, for cleaning the inside of the filter tube. With a water jet nozzle,
A bath tub water purification device provided with a guide member for guiding a horizontal jet from the wash water jet nozzle to a fluid to be jetted. 2. The jetting portion of the washing water jetting nozzle is provided below a filter medium support in the filter tube, and the guide member is provided on a peripheral surface of the filter tube facing the jetting portion. The bathtub water purification device according to claim 1. 3. The jetting portion of the washing water jetting nozzle is provided above a filter medium support in the filter tube, and the guide member is provided on a peripheral surface of the filter tube facing the jetting portion. The bathtub water purification device according to claim 1. 4. A jetting portion of the washing water jetting nozzle is provided below and below a filter medium support in the filter tube, and the guide member is provided on a peripheral surface of the filter tube facing the jetting portion. The bathtub water purification device according to claim 1, wherein 5. The cleaning water jet nozzle is provided substantially at the center of the filter medium support, and the guide member is configured such that the cross-sectional area of the filter cylinder is smaller at the bottom than at the top. The bathtub water purification apparatus according to claim 2, wherein: