JPH0695988B2 - Bathtub water purifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a bath water purifying apparatus.

<Prior art and its problems> As a bath water purifying apparatus of this type, a conventional bath water purifying apparatus such as, for example, Shokai 62-2
An apparatus described in Japanese Patent No. 4914 is provided. This device is provided with a filter that can be reversed in the middle of the purification circulation path so that bath water can be circulated in the same direction to purify the bath water and backwash the filter. However, in such a device, the filter itself is limited to a simple one such as a mesh, and there is a drawback that the bath water cannot be sufficiently purified.

On the other hand, like the device described in Japanese Utility Model Publication No. 63-46157,
There is also provided an apparatus capable of purifying bath water and backwashing a filter or the like by circulating bath water or the like in a forward or reverse direction with respect to a purification circulation path. Had various problems. That is, in order to maintain the efficiency of the filter, and especially to prevent hair and dust from adhering to the circulation pump itself, a hair collector is usually provided in front of the circulation pump. When the bath water is reversely circulated for backwashing, hair adheres to the circulation pump and the valve, resulting in accelerated failure of the circulation pump and valve, and there is a problem that hair adheres to the filter. In order to prevent such a situation, it is necessary to provide at least two hair collectors. In any case, as long as it is backwashed with used water such as bath water, cleaning of the hair collector and filter is insufficient, the amount of adhered substances increases with time, and eventually maintenance by human power is required. Become.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned conventional drawbacks and to provide a bathtub water purifying apparatus that can automatically and reliably and sufficiently clean a filter and a hair collector without requiring maintenance. .

<Means for Solving the Problem> The bath water purifying apparatus of the present invention is a bath water purifying circulation path 1 that returns from the bath 10 to the bath 10 via the hair collector 20 and the subsequent filter 30.
When purifying the bath water, the bath pump water is purified by driving the filtration pump P ₁ to pass the bath water in the forward direction in the order of the hair collector 20 and the filter 30, and then returning to the bath 10. In the apparatus, the clean water introducing passage 2 provided with a backwash pump P ₂ for supplying external clean water that is driven at the time of backwashing and a valve V ₃ for opening and closing a passage that is opened at the time of backwashing is provided with the filter 30. Connection A to the bathtub water purification circuit 1 between the downstream side bathtub 10 and the connection point A of the clean water introduction channel 2 to the bathtub water purification circuit 1.
A bathtub water purification circuit 1 between the bathtub 10 and the downstream side thereof is provided with a valve V ₂ for opening and closing a passage which is closed during backwashing, and the bathwater purification circuit 1 upstream of the hair collector 20. Is provided with a valve V ₁ for opening and closing a passage which is closed during backwashing, and the filtration pump P ₁ provided in the bath water purifying circulation passage 1 between the hair collector 20 and the filter 30 is A valve V ₄ for opening and closing a passage, which is opened during backwashing, is provided in the bypass passage 3 that bypasses P _1, and a valve V ₅ for opening and closing the passage is provided so that the filter 30 is provided during backwashing. Before passing the backwash water that has passed through the hair collector 20, the bath water purification circuit 1
It has a first discharge passage 4 that can be discharged to the outside, and is equipped with a valve V ₆ for opening and closing the passage, and the backwash water that has passed through the hair collector 20 at the time of backwashing enters the bathtub water purification circulation before entering the bathtub 10. The first feature is to have the second discharge passage 5 that can be discharged to the outside of the passage 1.

Further, it has a valve V ₆ for opening and closing a passage, and has a second discharge passage 5 for discharging the backwash water that has passed through the hair collector 20 at the time of backwashing to the outside of the bath water purification circulation passage 1 before entering the bathtub 10. This is the first feature.

Further, in the bathtub water purifying apparatus of the present invention, in the first feature described above, the first discharge passage 4 is connected to the bypass passage 3, and the passage opening / closing valve V ₅ is opened for a while during the initial period of backwashing. The second discharge passage 5 is connected to the bottom of the hair collector 20, and the valve V ₆ for opening and closing the passage is opened instead of the end of opening the valve V ₅ of the first discharge passage 4 during backwashing. The second feature is to be performed.

<Operation> According to the first feature described above, the clean water introduction passage 2 is provided at the time of backwashing.
The backwash pump P ₂ is driven, the valve V ₃ is opened, the valve V ₂ of the bath water purification circuit 1 on the downstream side of the connection point A is closed, and the hair collector
The valve V ₁ of the bath water purification circuit 1 on the upstream side of 20 is closed, and the valve V ₄ of the bypass 3 is opened. As a result, the clean water flows from the outside through the clean water introducing passage 2 into the bathtub water purifying circulation passage 1 from the connection point A and does not go to the bathtub 10 side. Flow in the opposite direction and first filter 30
Backwash. Then, the backwash water that has exited the filter 30 bypasses the bath water purification circulation path 1 without passing through the filtration pump P ₁ and enters the bypass path 3 and, if necessary, is collected by the first discharge path 4 by the first discharge path 4. Before entering the vessel 20, the water is discharged out of the bath water purification circuit 1. The backwash water that has entered the hair collector 20 from the bypass passage 3 is discharged from the second discharge passage 5 to the outside of the bath water purification circulation passage 1. Bath water purification circuit 1 between hair collector 20 and bath 10
Is closed by the valve V ₁ during backwashing, so that backwashing water does not enter the bath 10.

As described above, in the device of the present invention, the clean water is the bath water purification circuit 1
Introduced in the middle of, the bath water purifying circuit 1 is fully utilized to backwash the filter 30 and the hair collector 20, and the filtration pump P ₁ is not contaminated with backwash water, and the bath 10 Until then, the backwash water is discharged from the middle of the bath water purification circuit 1 without being carried over.

Further, according to the second feature, during backwashing, the water from which the filter 30 has been backwashed for a while from the start thereof is discharged from the first discharge passage 4
It is discharged from the hair collector 20 and does not flow into the hair collector 20 side.
Is prevented from being polluted. After a while from the start of backwashing, the hair collector 20 is washed with backwash water that has become clean water. None of the washed water is carried over to the bathtub 10 and discharged from the middle of the bathtub water purification circuit 1.

<Embodiment> FIG. 1 is a configuration diagram showing an embodiment of a bathtub water purifying apparatus according to the present invention.

A hair collector 20 and a filter 30 for purifying the bath water are provided for the bathtub 10, and a filtration pump P ₁ is provided in the bath water purification circulation path 1 between the hair collector 20 and the filter 30. Has been. Bathtub 10
When filtering water, the filtration pump P ₁ is driven to
The bath water from 10 is circulated to the bath 10 through the hair collector 20 and the filter 30 in the direction indicated by the solid line arrow in the circulation path 1 for purification.

The hair collector 20 is provided in order to prevent hair or other coarse dust from being carried over to the filtration pump P ₁ and the filtration device 30 and deteriorating or disabling the function thereof.
It is provided on the upstream side of the circulation path 1 with respect to 30 and the filtration pump P ₁ . Bathtub water from the bathtub 10 enters from the lower part of the hair collector 20 and is removed when passing through the filter 21 such as a net from the bottom to the top.

The filter 30 is filled with, for example, an upper ceramic filter material layer 31, and a small diameter ball jar layer 32 and a large diameter ball jar layer 33 in the lower portion, which is configured to reliably remove even fine dust, hot water, and the like. There is. 34 is a water inlet, which is an upward shower. An outlet 35 of filtered water having a connection point A is provided below the filtration layer, and an outlet 36 is provided at another position.

Further, in the circulation path 1 to the bathtub 10 downstream from the connection point A, there is provided an electric valve V ₂ for opening and closing the passage, which opens the passage at the time of purifying the bath water and closes the passage at the time of backwashing. Tank
There is provided a chemical injection means composed of 40 and its injection pump P _3, and a heating means composed of a heat exchanger 50, a temperature raising boiler 51 and a heat exchange pump P ₄ .

Reference numeral 60 is a clean water cistern, which is provided with a float valve 61, and when the water level falls below a certain level, clean water is replenished from the water supply or the like. The cistern 60 is provided with a backwash pump P ₂ that is driven during backwash and is stopped during bath water purification, and a motor-operated valve V ₃ for opening and closing a passage that is opened during backwash and closed during bath water purification. A clean water introduction path 2 is extended and connected to the circulation path 1 at the connection point A.

The collector for the hair 20 and the filter 30 filtering pump P ₁ provided in the circulation path 1 between the, filtrate bypass passage 3 bypassing the excessive pump P ₁ is provided in the bypass passage 3, A motor-operated valve V ₄ for opening and closing the passage is provided which is closed when cleaning the bath water and opened when backwashing. And the valve of the bypass 3
The first discharge path 4 is branched from the downstream side of V ₄ .
The first discharge passage 4 is provided with a motor-operated valve V ₅ for opening and closing the passage, which is closed during cleaning of bath water and is opened for a while during the initial period of backwash and closed thereafter.

The second discharge path 5 is connected to the bottom of the hair collector 20.
The second discharge passage 5 is closed at the time of cleaning the bath water, and at the time of backwashing, the motor-operated valve V _{5 of} the first discharge passage 4 is closed for a while and then opened. Motorized valve
V ₆ is provided.

A motor-operated valve V ₁ for opening and closing a passage is provided in the circulation path 1 between the hair collector 20 and the upstream side bath 10 and is opened when cleaning the bath water and closed when backwashing.

Now, when circulating purification of bath water is performed, the valves V ₁ and V _{2 are} opened, the valves V ₃ , V ₄ , V ₅ and V ₆ are closed, and the filtration pump P ₁
Is driven. As a result, as shown by the solid arrow, the bath water first enters the hair collector 20 via the valve V ₁ and the hair is removed. Further, from the hair collector 20 through the filtration pump P ₁ to the water inlet of the filter 30.
It enters the filter 30 from 34 and is filtered as it passes downwards. Then, flow from the outlet 35 through the connection point A to the valve V ₂ side, and
Return to.

Next, when backwashing the filter 30 and the hair collector 20 is performed,
First, the valves V ₁ , V ₂ , V ₆ are closed, the valves V ₃ , V ₄ , V _{5 are} opened, and the backwash pump P ₂ is driven. This causes the clean water from the cistern 60 to flow through the valve V ₃ , as indicated by the dashed arrow.
It is sent into the lower part of the filter 30 via the connection point A and the outlet 35, and further passes upward through the filter layers 33, 32, 31, and the filter layer 33,
Backwash 32 and 31. Further, from the water inlet 34, the three-way branch point B is passed to enter the bypass path 3, the three-way branch point C is also passed to the first discharge path 4, and the water is discharged to the outside.
After this state continues for a while, the valve V ₅
Is closed and valve V _{6 is} opened. As a result, the water that has entered the bypass passage 3 from the three-way branch point B does not go to the first discharge passage 4 side, enters the hair collector 20 from the three-way branch point D, and passes through the filter 21 from top to bottom. Then, hairs and the like adhering to the lower side of the filter 21 are dropped, and are discharged together with the second discharge path 5.

As mentioned above, for a while after the backwash starts, filter
By discharging the water that has passed through 30 without sending it to the hair collector 20, it is possible to prevent the backwashed water of the filter 30 from being carried over to the hair collector 20 in the initial stage. That is, since the backwash water is sent to the hair collector 20 when the backwash water that has passed through the filter 30 becomes relatively clean, the backwash of the hair collector 20 is also secondary contaminated. Will be good without. Note that the "for a while" may be a fixed time with a timer or the like, or may be a time until a backwashed water having a fixed water amount passes by providing a water amount sensor,
Further, the switching may be performed by a sensor or the like that detects the degree of contamination of water.

Although the first discharge path 4 is branched from the bypass path 3 in the drawing, it may be branched from the circulation path 1 between the hair collector 20 and the three-way branch point D, or the three-way branch point B. And water inlet 34
It may be branched from the circulation path 1 between and. In the latter case without sewage passing through the filter 30 to backwash the initial period is transmitted to the valve V _4, is exhausted to the outside, it can be avoided even possibility of clogging or failure of the valve V _4.

In the above description, the control mechanism is constructed so that switching is automatically performed with the progress of the operation of the valve and the pump, but a manual type is also possible.

Further, the backwash time may be automatically performed, for example, every time the bath water purification operation is stopped, or when the bath water purification operation is continuously operated for a long time. ,
Backwashing may be performed at regular intervals during the operation.

<Effect> The present invention is configured as described above, and according to the bath water purifying apparatus of claim 1, the bath water itself is not used for backwashing, and clean water from the outside is used as the bath water. Introduce it in the middle of the purification circuit 1 and use a part of the bath water purification circuit 1 to backwash both the filter 30 and the hair collector 20 with the introduced clean water. Therefore, the filter 30 and the hair collector 20 can be sufficiently cleaned and regenerated. Therefore, the filter 30 and the hair collector 20 can be maintained and used in a good condition without maintenance for a long period of time.

Moreover, the backwash water used for washing was
Since the water is discharged to the outside of the circulation path 1 before being carried over to the bathtub 10, dirty water does not enter the bathtub 10.

Further, since the clean water after backwashing the filter 30 bypasses the filtration pump P ₁ by the bypass passage 3, the filtration pump P ₁ is contaminated with the backwash water or foreign matter is clogged. This prevents long-term maintenance-free use.

According to the bath water purifying apparatus of claim 2, in addition to the effect of the configuration of claim 1, clean water obtained by backwashing the filter 30 during backwashing for a while from the start of backwashing. Since it does not flow into the hair collector 20 side, the hair collector 20 is washed with dirty backwash water that has washed the filter 30 in the initial stage of backwashing.
Can be prevented from being polluted. Along with the start of backwashing, the hair collector 20 can be backwashed and washed with clean water. Therefore, both the hair collector 20 and the filter 30 can be reliably washed and regenerated with clean water.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a bath water purifying apparatus according to the present invention. 1: circulation path 2: clean water introduction passage 3: bypass, 10: Tub 20: hair collector, 30: filter P _1: filtering pump P _2: backwash pump V ₁ ~V _6: Electric valve

Claims (2)

[Claims] 1. A bathtub 10 with a hair collector 20 and a subsequent filter 30.
The bath water purifying circuit 1 is provided to return to the bathtub 10. The bath water is purified by driving the filtration pump P ₁ in the forward direction in the order of the hair collector 20 and the filter 30 when purifying the bath water. A bathtub water purifying device that returns to the bathtub 10, comprising a backwash pump P ₂ for supplying external clean water that is driven during backwashing, and a passage opening / closing valve V ₃ that is opened during backwashing. The clean water introducing passage 2 is connected to the bath water purifying circulation passage 1 between the downstream side bath 10 of the filter 30 and the connection point A of the clean water introducing passage 2 to the bath water purifying circulation passage 1.
A bathtub water purification circuit 1 between the bathtub 10 and the downstream side thereof is provided with a valve V ₂ for opening and closing a passage which is closed during backwashing, and the bathwater purification circuit 1 upstream of the hair collector 20. Is provided with a valve V ₁ for opening and closing a passage which is closed during backwashing, and the filtration pump P ₁ provided in the bath water purifying circulation passage 1 between the hair collector 20 and the filter 30 is A bypass passage 3 that bypasses P ₁ is provided, a passage opening / closing valve V ₄ that is opened at the time of backwash is provided in the bypass passage 3, and a passage opening / closing valve V ₅ is provided so that the filter 30 is provided at the time of backwash. Before passing the backwash water that has passed through the hair collector 20, the bath water purification circuit 1
It has a first discharge passage 4 that can be discharged to the outside, and is equipped with a valve V ₆ for opening and closing the passage, and the backwash water that has passed through the hair collector 20 at the time of backwashing enters the bathtub water purification circulation before entering the bathtub 10. A bath water purifying device having a second discharge passage 5 that can be discharged to the outside of the passage 1. 2. A first discharge passage 4 is connected to a bypass passage 3, a valve V ₅ for opening and closing the passage is opened for a while during the initial stage of backwashing, and a second discharge passage 5 is a hair collector. The valve V ₆ for opening and closing the passage, which is connected to the bottom of 20, is opened instead of the end of opening the valve V ₅ of the first discharge passage 4 during backwashing.
The bath water purifying apparatus according to.