JP3497194B2 - Automatic filtration device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic filtration apparatus for automatically filtering various kinds of service water such as bath water and pool water. 2. Description of the Related Art As shown in Japanese Utility Model Publication No. Sho 60-10658, for example, a conventional general filtering device is designed to send water from various water tanks to a filter using a pump and filter the water. Back to the water tank again to use the filter path, the same way the water is pumped to the filter in the opposite direction to wash the filter medium,
A backwashing path for draining the water (sewage) after washing into a drainage path is provided, and these paths are selectively switched by one switching valve. In this case, since each route is switched manually by a user (an attendant), there is a problem that the backwashing operation is for a long time, and dust or debris adheres to the filter medium, thereby deteriorating the filtering function. Was. [0003] Therefore, as shown in, for example, Japanese Utility Model Publication No. 4-888, when a filtration operation switch is turned on,
First, there has been proposed a filtering apparatus in which the switching valve is switched to the backwashing path side to perform backwashing of the filter medium for a certain period of time, and then switched to the filtering path side to perform a filtering operation. [0004] According to the conventional filtering apparatus configured as described above, the backwashing is automatically performed prior to the filtration as long as the filtering operation is performed. It is possible to solve the problem of garbage or red deposits adhering to the filter medium by forgetting, but this filter device only performs backwashing when the filter operation switch is turned on and the filter operation is started. Therefore, if the filtration operation is continued for a long period of time, there is a problem that the filter medium cannot be backwashed on the way and garbage or rust adheres, and when the filter medium is backwashed during the filtration operation, In addition, there is a problem that the operation becomes very complicated because the filtration operation must be temporarily stopped and the operation switch must be turned on again. [0005] Further, the backwashing operation is usually performed for about 3 to 5 minutes, but the backwashing operation is performed by always supplying water only in one direction (reverse direction) to wash the filter medium. However, there is a problem that dust and the like dropped by the direction of the filter remain between the filter media, and the remaining dust and the like are sent out to the water tank at the start of the filtration operation. Therefore, there is also a problem that a sufficient filtration function cannot be exhibited at the beginning of the filtration operation because the distribution becomes uneven. Accordingly, a technical problem of the present invention is that when dust or rust adheres to the filter medium during the filtration operation and causes clogging, the filter medium is automatically switched to the backwash operation to wash the filter medium. ,
After backwashing by flushing all dust which can not be discharged to rinse the filter medium, as well as to soothe the filter media in a state where danced by backwashing, which like
Set the operation switch to one for filtration operation, backwash operation, and rinse operation.
Once turned on, all staff members do not touch at all
This is to switch automatically . [0007] Means taken by the present invention to solve the above-mentioned technical problems are as follows. After filtration sent in the forward direction water for various water bath say the bath and pool for filter pump, and filtration path sent back again to the water tank, the opposite direction to the filter the water in the water tank with pump To the filter medium, and to wash the filter media .
Rinsing the filter media by sending it in the positive direction to
And a rinse path for draining the drainage water, and which like a construction the filtration device to selectively perform switching of each path at one switching valve, between the pump and the switching valve connecting the middle of the water supply passage, Rutotomoni provided a pressure switch that can pressure of the water supply passage is automatically switched to backwash path exceeds the set value of the above switching valve from the filtration path, said backwash
The time set by the timer for cleaning the filter media by the route
After that, the switching valve is automatically switched to the above-mentioned rinsing path to filter
Rinsing of the material is performed for the time set by the timer,
After that, the switching valve is automatically switched to the filtration path again to filter the water.
It is characterized by having such a configuration . The above means operates as follows. According to the above-described means, when dirt or rust adheres to the filter medium due to the filtration operation and causes clogging, the pressure in the pipe in the water supply passage for sending water increases, and when the pressure exceeds a set value, the switching valve is filtered. The user turns on the operation switch (operation switch) once to automatically switch from the route to the backwash route and perform the backwash operation.
It is possible to automatically switch between the filtering operation and the backwashing operation just by doing so that the filtering function of the filtering device can always be maintained in a good state. Further, according to the above-mentioned means, after the operation switch of the filtration device is turned on once, the operation of filtration, backwashing and rinsing can be automatically switched without touching the user at all. In addition to being able to wash away trash etc. that could not be completely discharged by the backwashing operation during the rinsing operation, it also makes it possible to uniformly distribute the distribution of the filter media that was roughened by the backwashing, and to constantly exert a stable filtration function . As described above, the technical problems described above can be solved by the above means, and the problems of the conventional technology can be solved. Preferred embodiments of the above-mentioned automatic filtering apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.
FIGS. 1 and 2 are a perspective view showing an example of a filter (high-speed sand filter) used in the present invention and a perspective view showing an internal structure thereof. Is a filter (tank) made in a container shape, 1a is a base, 2 and 3 are lower and upper suction and drain ports opened on the front surface of the filter 1,
Reference numerals 4a and 4b denote a pressure gauge and an air vent valve, and reference numeral 5 denotes a filtration device provided inside the filter 1. [0011] The filtration device 5 is a pipe 5a standing in the center.
A distributor 5b attached to the upper end of the pipe 5a, an outer cover pipe 5d attached around the lower side 5c of the pipe 5a at intervals, and the lower suction / drain port 2 and the lower end of the pipe 5a. Lower connecting pipe 2a communicating with
, An upper connecting pipe 3a that communicates the upper suction / drain port 3 with the upper end of the outer cover pipe 5d, and a plurality of water collecting branch pipes 5e that are connected to the lower end of the outer cover pipe 5d in an octopus shape. Are formed on the bottom surface of each water collecting branch pipe 5e, and a large number of small holes 5b1 are provided on the upper surface of the distributor 5b.
As shown in FIGS. 3 to 5, a filter medium S made of silica sand or the like is accommodated in the filter 1. Next, in FIGS. 3 to 5, what is generally indicated by reference numeral 10 is a switching valve constituted by using an electric five-way valve. Mizuguchi 2
First switching port 10A connected to connection port 12 using connection pipe 12
A second switching port 10B connected to the above-mentioned upper suction / drain port 3 using a connection pipe 13, a third switching port 10C connected to various water tanks 16 such as a bathtub or a pool using a circulation pipe 14, Drainage pipe 1 provided toward road 21
5 and a water supply port 11a connected to the tip of the water supply pipe 11. A rotary valve 10R fitted in the switching valve 10 is connected to a motor 10R.
M (see FIG. 6), the water supply port 11a is connected to the first, second, and third switching ports 10A, 1A.
0B and 10C, the rotary valve 10R can rotate as shown in FIG.
a is connected to the first switching port 10A (during the filtering operation), the second and third switching ports 10B and 10C are connected to the fourth switching port 10A.
The switching port 10D is closed, and the water supply port 11a as shown in FIG.
Is connected to the second switching port 10B (during backwashing operation),
When the first and fourth switching ports 10A and 10D are connected to close the third switching port 10C, and the water supply port 11a is further connected to the first switching port 10A as shown in FIG. 5 (during rinsing operation). The third and second switching ports 10C are closed by communicating the second and fourth switching ports 10B and 10D. Further, in the drawing, reference numeral 17 denotes a water supply pipe connecting the above-mentioned water tank 16 and the water supply pipe 11, and in the middle of the pipe 17, the water W of the water tank 16 is filtered through the water supply pipe 11 and the switching valve 10. A water pump 18 for sending to one side,
A hair catcher 19 is attached, and in the middle of a water supply pipe 11 connecting the water supply pump 18 and the switching valve 10,
When the pressure in the water supply pipe 11 exceeds a set value, the motor is turned on to operate the motor 10M, and the switching valve 10 is changed from the normal filtration operation state shown in FIG. 3 to the backwash operation state shown in FIG. Specifically, a pressure switch 20 (pressure sensor) for rotating the rotation switching valve 10R by 180 ° is provided. FIG. 6 is a block diagram schematically illustrating the above-described electrical configuration of the present invention. The above-described water supply pump 18 and pressure switch 20 are provided to a control unit 30 configured using a microcomputer or the like. And a motor 10M for the switching valve 10, and a timer 2 for setting each operation time T1, T2 in the backwashing state shown in FIG. 4 and the rinsing state shown in FIG.
0T is connected, and each is controlled and operated in accordance with a program stored in the control unit 30. Next, the operation of the automatic filtration device according to the present invention will be described with reference to the flowchart shown in FIG. Step S1: When an operation switch (not shown) is turned on, the motor 10M operates the rotary valve 10R of the switching valve 10 as shown in FIG.
The rotation is controlled so as to set the filtration operation state shown in FIG. Step S2: It is determined whether or not the rotary valve 10R has been set to the filtering operation state. If it has been set, the process proceeds to the next step S3. If not set, the motor 10M operates until it is set to the filtering operation state. The rotary operation of the rotary valve 10R is continued. Step S3: When the switching valve 10 is set to the filtration operation state shown in FIG.
The service water W in 6 is sent to the filter 1 through the switching valve 10 to be filtered. That is, the water supply port 11a is
The water W sent into the switching valve 10 from the first port 10A → the connecting pipe 12 → the lower suction / drain port 2 of the filter 1 →
The lower connecting pipe 2a is sent in the order of the pipe 5a, then the water is sprinkled on the filter medium S by the distributor 5b and filtered, and the filtered water W is collected from each hole 5e1. 5d → upper connecting pipe 3a
→ Upper stage suction / drain port 3 → Connection pipe 13 → Second of switching valve 10
Switching port 10B → Similar third switching port 10C → Circulation pipe 1
4 and the filtration cycle in which the water is returned to the water tank 16 is sequentially repeated. Step S4: If the above-mentioned filtration operation is continued for a long period of time, dust or rust adheres to the filter medium S of the filter 1 and causes clogging, which causes the pressure in the water supply pipe 11 to increase. However, in this step S4, it is determined whether or not the pressure switch 20 is turned on due to the increase in the pipe pressure, that is, whether or not the pipe pressure exceeds a set value due to clogging of the filter medium S. In step S5, if the switch is OFF, the filtration operation is continued. Step S5: As soon as the pressure switch 20 is turned on, the water supply pump 18 is turned off to stop the filtration operation. Step S6: The motor 10M switches the switching valve 10
Of the rotary valve 10R is set to the backwash operation state shown in FIG. 4, and the process proceeds to the next step S7. Step S7: It is determined whether or not the rotary valve 10R is set to the backwash operation state. If the rotary valve 10R is set, the process proceeds to the next step S8. The rotation operation of the rotary valve 10R by 10M is continued. Step S8: When the switching valve 10 is set to the state of the backwashing operation shown in FIG.
N, the service water W in the water tank 16 is sent into the filter 1 through the switching valve 10 to backwash the filter medium S. That is, the water pump 18
The water W sent from the water supply port 11a into the switching valve 10 by the second switching port 10B → the connecting pipe 13 → the upper suction / drain port 3 of the filter 1 → the upper connecting pipe 3a → the outer cover pipe 5d → the water collecting branch pipe 5e. Sent in the order of ... each hole 5e
1 backflow into the filter 1 to backwash the filter medium S, and the backwashed water W (dirty water) is distributor 5b → pipe 5a → lower connecting pipe 2a → lower suction / drain port 2 → switching valve 1
The first switching port 10 </ b> A, the fourth switching port 10 </ b> D, and the drainage pipe 15 are sent in this order, and finally drained to the drainage channel 21. Step S9: Turn on the water supply pump 18
At the same time, the timer 20T for the backwash operation is operated, and the backwash operation is performed for a preset time T1. Step S10: It is determined whether or not the backwashing operation has timed out. If the time has elapsed, the next step S1 is performed.
Proceed to 1 and if the time is not up, continue the above-described backwashing operation. Step S11: The water pump 18 is turned off to stop the backwash operation, and the process proceeds to the next step S12. Step S12: The motor 10M operates the switching valve 1
The control rotation of the rotary valve 10R is set to the rinse operation state shown in FIG.
Proceed to. Step S13: It is determined whether or not the rotary valve 10R has been set to the rinsing operation state. If it has been set, the process proceeds to the next step S14. If not set, the rotary valve 10R is rotated by the motor 10M until the rinsing operation state is set. The rotation operation of the valve 10R is continued. Step S14: When the switching valve 10 is set to the rinse operation state shown in FIG.
Is turned on to send the water W in the water tank 16 into the filter 1 through the switching valve 10 to rinse the filter medium S. That is, water W which is fed into the switching valve 10 from the water supply port 11a by a water pump 18, the first switching換口10 A → the connecting pipe 12 → the lower intake of the filter 1 Mizuguchi 2 → lower connecting pipe 2a → the pipe 5a The water W (dirty water) after rinsing is sent in order and sprinkled on the filter medium S by the distributor 5b to rinse the same, and the water collecting branch pipe 5e from each hole 5e1.
Outer cover pipe 5d → upper connection pipe 3a → upper suction / drain port 3 → connection pipe 13 → second switching port 10B of switching valve 10
→ Similarly, the fourth switching port 10D is sent in the order of the drainage pipe 15, and finally drained to the drainage channel 21. Step S15: O of the water supply pump 18
At the same time as N, the rinsing operation timer 20T operates,
The rinsing operation is performed for a preset time T2. Step S16: It is determined whether or not the rinsing operation has timed out.
Proceeding to step 17, if the time is not up, the rinsing operation described above is continued as it is. Step S17: The water supply pump 18 is turned off to stop the rinsing operation. Thereafter, the flow returns to the first step S1, and the processes of filtration, backwashing, and rinsing are repeated again. As described above, according to the automatic filtration apparatus of the present invention, once the operation switch is turned on, the filtration, backwashing, and rinsing can be performed without the attendant's hand touching thereafter. Since each operation is automatically switched and executed repeatedly, it is suitable for use when circulating water while filtering the water for a long time, and the time for the backwashing operation and the rinsing operation can be freely set by a timer. Therefore, by adjusting each operation time according to the conditions such as the kind of water and the degree of contamination, it is possible to exhibit the advantage of exhibiting an excellent filtering effect, and various water tanks such as bathtubs and pools It is very useful to implement it.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an external appearance of a filter used in an automatic filter according to the present invention. FIG. 2 is a perspective view showing an internal structure of the filter. FIG. 3 is a configuration diagram when the present invention is set in a filtration operation state. FIG. 4 is a configuration diagram when the present invention is set to a backwash operation state. FIG. 5 is a configuration diagram when the present invention is set to a rinse operation state. FIG. 6 is a block diagram showing an electrical configuration of the present invention. FIG. 7 is a flowchart illustrating an operation state of the present invention. [Description of Signs] 1 Filter S Filter medium 2 Lower suction / drain port 3 Upper suction / drain port 5a Pipe 5b Distributor 5d External cover pipe 5e Water collecting branch pipe 5e1 Hole 10 Five-way switching valve 10R Rotary valve 10M Motor 10A First switching port 10B Second switching port 10C Third switching port 10D Fourth switching port 11 Water supply pipe 11a Water supply ports 12, 13 Connection pipe 14 Circulation pipe 15 Drain pipe 16 Water tank W Water 18 Water supply pipe 20 Pressure switch 20T Timer 21 Drainage channel

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B01D 35/16 B01D 37/04 A47K 3/00 E04H 4/12

Claims (1)

(57) [Claims 1] A filtration path for sending water for various water tanks such as bathtubs and pools to a filter in a forward direction by a pump, filtering the water, and then returning the water to the water tank again; washing the filter medium sent in the opposite direction to filter the water in the water tank with pump, and backwash path for draining water after washing drainage, water for the water tank
Pump to the filter in the forward direction to rinse the filter media.
And, a rinse path for draining the drainage of water after rinsing, and, the switching of this such each path a filtering device configured to selectively perform at one switching valve, and the pump in the middle of the water supply passage connecting the switching valve, Rutotomoni provided a pressure switch that can pressure of the water supply passage is automatically switched to backwash path exceeds the set value of the above switching valve from the filtration path, said backwash Cleaning of filter media by route
After a time set by the
Automatically switch to the rinse path and rinse the filter media with a timer.
And then switch the switching valve back to the filtration path again.
An automatic filtration apparatus characterized in that the water is filtered by dynamic switching .