JPH0563699U - Purified water drainage device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the failure of the water pump that sends the purified water in the water tank to the sewer, and to enable the continuous use of the water tank even if the water pump fails. .. [Structure] A plurality of water pumps 16 and 17 for sending the purified water 3 in the water tank 4 to the sewer are provided.
A control device 37 for alternately performing operations 6 and 17 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a purified water drainage device that sends purified water generated in a domestic wastewater septic tank to sewers.

[0002]

[Prior Art]

 Conventionally, there are the following devices for treating organic wastewater generated from homes and the like. That is, a septic tank for containing the waste water is provided, and in the septic tank, the waste water is separated into sludge and purified water which is a supernatant liquid, and the purified water is discharged from the upper part of the septic tank to the outside thereof. Further, when the purified water thus drained is lower than the sewer, a water tank for temporarily storing the purified water is provided, and a water pump for sending the purified water in the water tank to the sewer is provided. .. By appropriately operating this water pump, the purified water is sent to the sewer, and the liquid level of the purified water in the water tank is maintained at a predetermined height.

[0003]

[Problems to be solved by the device]

 By the way, in the above-mentioned conventional structure, since only one water pump is provided and the frequency of use is high, there is a problem in that this water pump is likely to fail. In addition, if the water pump is stopped due to some trouble, purified water overflows into the water tank and the septic tank cannot be used.

[0004]

[The purpose of the device]

 The present invention was made in view of the above circumstances, and suppresses the occurrence of a failure in the water pump that sends the purified water in the water tank to the sewer, and even if the water pump fails, The purpose is to enable continuous use of the septic tank.

[0005]

[Means for Solving the Problems] A feature of the present invention for achieving the above-mentioned object is that a water tank that temporarily stores purified water generated in the septic tank and water that sends the purified water in this tank to the sewer In the purified water drainage device including a pump, a plurality of the above water pumps are provided and a control device for alternately operating these water pumps is provided.

[0006]

[Work]

 The operation of the above configuration is as follows. A plurality of water pumps 16, 17 for sending the purified water 3 in the water tank 4 to the sewer 25 are provided, and a controller 37 for alternately operating the water pumps 16, 17 is provided. Therefore, firstly, while one of the water pumps 16 and 17 is operating, the other is in a dormant state. Therefore, the frequency of use of the water pumps 16 and 17 can be suppressed to that extent, and as a result, failure of the water pumps 16 and 17 is less likely to occur. Secondly, when one of the water pumps 16 and 17 fails, the other one is operated to prevent the purified water 3 from immediately overflowing into the water tank 4 due to the above failure.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 4, in particular, in FIG. 2, reference numeral 1 is a septic tank, and organic wastewater 2 produced at home is stored in the septic tank 1. In the septic tank 1, the waste water 2 is separated into sludge and purified water 3 which is a supernatant liquid, and the purified water 3 is drained from the upper part of the septic tank 1 by natural flow.

1 to 4, a water tank 4 that receives the purified water 3 and temporarily stores the purified water 3 is buried in the ground 5. The aquarium 4 is made of resin, and has a cylindrical body 6 with an axial center facing vertically, a bottom plate 7 that closes the lower part of the body 6, and a ceiling plate 8 that closes the upper part of the same body 6. A receiving pipe 9 for the purified water 3 is attached to the upper part of the device 6.

A circular manhole 10 is formed in the center of the ceiling plate 8, and an extension cylinder body 11 is provided for communicating the manhole 10 above the ground surface 12. The extension cylinder body 11 has an axial center. It has a vertical cross section. A female screw 10a is formed on the opening edge of the manhole 10, while a male screw 11a is formed on the lower end of the extension cylinder 11. Then, the male screw 11a of the extension cylinder 11 is screwed onto the female screw 10a of the manhole 10, whereby the extension cylinder 11 is fixed to the ceiling plate 8.

The upper end of the extension cylinder 11 slightly projects from the ground surface 12 and is openably and closably closed by the manhole cover 13. When the manhole cover 13 is opened, the inside of the septic tank 1 can be operated from the ground surface 12 through the extension cylinder 11 and the manhole 10.

A pedestal 15 made of resin or sheet metal is mounted on the bottom plate 7 in the water tank 4, and a first water pump 16 and a second water pump 17 are arranged side by side on the pedestal 15. The first water pump 16 and the second water pump 17 are submersible pumps having the same specifications as each other. Each of the water absorbing parts 18 is opened on the lower surface side of the pedestal 15, and the discharge part 19 is opened upward. I'm talking.

First drain pipes 21 and 21 extend upward from the respective discharge portions 19. The upper ends of both the first drain pipes 21 and 21 are connected to each other, and the second drain pipe 22 extends upward from this connecting portion, and the upper end of the second drain pipe 22 penetrates the ceiling plate 8 of the water tank 4. .. A socket 23 is attached to the upper end of the second drain pipe 22. One end of a third drain pipe 24 is detachably connected to the socket 23, and the other end of the third drain pipe 24 is connected to a sewer 25 located higher than the water tank 4. Each of the drain pipes 21, 22 and 24 is made of resin and can be appropriately disassembled and assembled by a joint provided at a predetermined position in the longitudinal direction.

A liquid level gauge 28 for detecting the liquid level 27 of the purified water 3 stored in the water tank 4 is provided. The liquid level gauge 28 has a bracket 30 removably screwed to the lower surface of the ceiling plate 8 by a bolt 29, and an electrode rod holder 31 is removably attached to the bracket 30. First to fourth electrode rods 32 to 35 extend downward from the electrode rod holder 31 and are gradually shortened in this order.

In particular, in FIG. 1, 37 is an electronic control unit, which has an alternating operation relay 38, a pair of relays 39, 40, and a switch circuit 41, which are connected to each other. ing. The first water pump 16 and the second water pump 17 are connected to the alternate operation relay 38 through the electric wires 42 and 43 and the relays 39 and 40, respectively, and the first to fourth electrode rods 32 to 35 is connected to the switch circuit 41 via an electric wire 44.

The wiring of each of the electric wires 42, 43, 44 will be described. A pair of nipples 46, 47 are provided on the lower portion of the extension cylinder 11 at symmetrical positions in the radial direction. The control device 37 and the nipple 46 on the side closer to the control device 37 of the nipples 46 and 47 are connected by a resin connecting pipe 48, and the other nipple 47 is detachably closed by a cap 49. ing. The electric wires 42, 43, 44 are wired through the nipple 46 and the connecting pipe 48. The nipples 46 and 47 are used as handles when the extension cylinder 11 is screwed onto the manhole 10.

The first water pump 16 and the second water pump 17 are controlled by the control device 37 so as to be alternately operated, whereby the liquid level 27 of the purified water 3 in the water tank 4 is maintained at a predetermined height. It is designed to be drunk.

This will be specifically described with reference to FIGS. 1, 2, and 5. When the purified water 3 is supplied from the septic tank 1 into the water tank 4, its liquid level 27 rises. Then, when the liquid level 27 reaches the lower end of the third electrode rod 34, the first water pump 16 is started via the alternate operation relay 38 and the relay 39 by the detection signal of the liquid level gauge 28 that detects the liquid level 27. (Point a in FIG. 5). Then, by operating the first water pump 16, the purified water 3 is sent to the sewer 25, and the liquid level 27 is lowered. Next, when the liquid level 27 reaches the lower end of the second electrode rod 33, the alternate operation relay 38 and the relay 39 are turned off by the detection signal of the liquid level gauge 28 that detects the liquid level 27. The water pump 16 stops (point b in FIG. 5).

After that, the purified water 3 is supplied from the septic tank 1 to the water tank 4 again, and the liquid level 27 rises. When the liquid level 27 reaches the lower end of the third electrode rod 34, the liquid level 27 is detected. The detection signal of the liquid level gauge 28 starts the second water pump 17 in place of the first water pump 16 via the alternate operation relay 38 and the relay 40 (point c in FIG. 5). Then, by operating the second water pump 17, the purified water 3 is sent to the sewer 25, and the liquid level 27 is lowered. Next, when the liquid level 27 reaches the lower end of the second electrode rod 33, a detection signal of the liquid level gauge 28 that detects the liquid level 27 turns off the alternate operation relay 38 and the relay 40, and the The 2 water pump 17 stops (point d in FIG. 5). Thereafter, the above operation is repeated, and the purified water 3 is sequentially sent out to the sewer 25, and the liquid level 27 thereof is maintained at a predetermined height.

In the above case, when a failure occurs in the first water pump 16 or the second water pump 17, a warning is issued by an emergency buzzer or the like, and at the same time, the failure occurs automatically or manually. Only the water pump which is not operated is operated based on the detection signal of the liquid level gauge 28. When the faulty water pump is restored by repair, the normal operation described above is restored.

On the other hand, when the liquid level 27 reaches the lower end of the fourth electrode rod 35, the detection signal of the liquid level gauge 28 that detects the liquid level 27 causes the alternate operation relay 38 and the relays 39, 40 to intervene. One of the first water pump 16 and the second water pump 17, which is normally stopped, is urgently operated and the liquid level 27 is maintained at a predetermined height. Also at this time, a warning is issued by the emergency buzzer or the like.

In the above embodiment, the first water pump 16 and the second water pump 17 are alternately operated once, but may be alternately operated a plurality of times. Further, the first water pump 16 may have a larger capacity than the second water pump 17, and the number of times of operation of the first water pump 16 may be larger than that of the second water pump 17. Further, the nipples 46 and 47 may be sockets.

[0022]

[Effect of the device]

 According to this invention, a plurality of water pumps for sending the purified water in the water tank to the sewer are provided, and the control device for alternately operating each of these water pumps is provided. Others go dormant while or is driven. Therefore, the frequency of use of each water pump is reduced to that extent, and as a result, failure of each of these water pumps is less likely to occur and the life is improved. Secondly, when one of the water pumps fails, the other is operated to prevent the purified water from immediately overflowing into the water tank due to the above failure. Therefore, even if either of the two water pumps fails, the septic tank can be used continuously.

[Brief description of drawings]

FIG. 1 is an overall front sectional view.

FIG. 2 is an overall side sectional view.

FIG. 3 is a partial cutaway view of FIG.

FIG. 4 is a plan sectional view of FIG. 1.

FIG. 5 is a flow chart for controlling the water pump.

[Explanation of symbols]

 1 Septic tank 2 Waste water 3 Purified water 4 Water tank 16 1st water pump (water pump) 17 2nd water pump (water pump) 25 Sewer 28 Liquid level gauge 37 Control device

Claims (1)

[Scope of utility model registration request] 1. A purified water drainage device comprising a water tank for temporarily collecting purified water generated in the septic tank, and a water pump for sending the purified water in the tank to the sewer. A purified water drainage device with a control device that alternately operates each water pump.