CN112933976A

CN112933976A - Waste water utilizing machine

Info

Publication number: CN112933976A
Application number: CN201911265343.XA
Authority: CN
Inventors: 黄艳红
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2021-06-11

Abstract

The waste water utilizing machine is characterized by further comprising a water supplementing channel, a water using inductor and a water shortage inductor, wherein the water supplementing channel is connected to the waste water channel between the water outlet end and the waste water pump assembly in a bypass mode, the water supplementing channel is provided with a water supplementing electromagnetic valve, the water using inductor is arranged on the waste water channel between the water outlet end and the waste water pump assembly, the water shortage inductor is arranged on the waste water channel, or the water shortage inductor is an independent accessory and is separated from the waste water channel; the waste water utilization machine has the advantages of simple and reasonable structure, capability of being matched with equipment containing available recovered water, such as an RO reverse osmosis water purification machine and the like, through an external waste water tank, priority use of the recovered water (waste water) as water supply, realization of uninterrupted, automatic and continuous water supply and the like.

Description

Waste water utilizing machine

Technical Field

Is matched with equipment containing available recovered water, such as a reverse osmosis water purifier and the like.

Background

In modern society, water resources are increasingly scarce, and people are consciously making a premium on water resources, for example, to make secondary use of waste water (especially, a directly reusable water source) as much as possible. The RO reverse osmosis water purifier must produce waste water in the water production process, and actually, the waste water is concentrated water and can be completely recycled.

Taking a household reverse osmosis water purifier as an example, wastewater (concentrated water) is generated during water production, the ratio of pure water to wastewater is about 1:3, and the wastewater can be used for flushing a toilet, mopping a floor, watering flowers and the like, but the existing household reverse osmosis water purifier directly discharges the concentrated water to a sewage pipe, which causes waste. According to statistics, about 3000 million users using RO reverse osmosis water purification machines in China currently discharge 300 million tons of wastewater per day and 11 million tons of wastewater per year according to 100 liters of wastewater discharged by each machine.

Although some containers are used for collecting the wastewater at present, how to utilize the wastewater after collection is a problem. Some people adopt the reuse of wastewater such as a basin and a gourd ladle, and others use a pump to reuse the wastewater, but the mode can only realize intermittent water supply and cannot realize the wastewater utilization of the uninterrupted water supply.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides the waste water utilization machine which has a simple and reasonable structure, can be matched with equipment containing available recovered water, such as an RO reverse osmosis water purification machine and the like, through an external waste water tank for use, preferentially uses the recovered water (waste water) as water supply and realizes uninterrupted, automatic and continuous water supply.

The purpose of the invention is realized as follows:

the utility model provides a waste water utilization machine, includes the waste water passageway, is equipped with into water end, waste water pump assembly and goes out the water end on the waste water passageway, characterized by, still including moisturizing passageway, water use inductor and water shortage inductor, moisturizing passageway bypass is connected on the waste water passageway between play water end and waste water pump assembly, is provided with the moisturizing solenoid valve on the moisturizing passageway, the water use inductor sets up on the waste water passageway between play water end and waste water pump assembly, the water shortage inductor sets up on the waste water passageway, or the water shortage inductor sets up for independent accessory and waste water channel separation.

The waste water utilization machine is an independent product, can be matched with any equipment containing available recovered water through an external waste water tank for use, and particularly can be connected with an RO (reverse osmosis) water purification machine, and according to the statistics of the data, if the existing national RO water purification machines are all used by the waste water utilization machine, the waste water discharge can be reduced by about 11 hundred million tons every year; if the single user is used, the waste of nearly 40 tons of water can be reduced each year. When in use, the waste water tank, the water terminal (namely: a tap, a valve, etc.) and the tap water pipe are respectively connected with the water inlet end, the water outlet end and the outer end of the water replenishing channel of the waste water utilization machine, and the purpose of the patent can be realized by matching with an electric control part (which can be an independent electric control device and can also be a control device on an RO reverse osmosis water purification machine): waste water collected by the waste water tank is preferentially used, and the uninterrupted, automatic and continuous water supply purpose of the water using terminal is realized through the water replenishing channel.

When a water terminal (such as a water tap) connected with the water outlet end of the waste water channel is opened, the water sensor senses that relevant signals in the waste water channel are changed, the signals are fed back to the electric control device, the waste water pump assembly is started, waste water is pumped in from the water inlet end and is finally discharged from the water outlet end for use, waste water can be preferentially used, and the waste water pump assembly can be prevented from being electrified for a long time to work.

The aim of the invention can also be solved by the following technical measures:

as a more specific solution, the water sensor may be a water pressure sensor or a water pressure switch, when a water terminal (e.g. a faucet) connected to the water outlet end of the wastewater channel is turned on, the water pressure sensor or the water pressure switch monitors that the pressure in the wastewater channel changes, and feeds a signal back to the electric control device to start the wastewater pump assembly, so that wastewater is pumped in from the water inlet end and finally discharged from the water outlet end for use, that is: wastewater is preferably used.

As another embodiment, the water sensor can also be a water flow sensor or a water flow switch, when a water terminal (such as a faucet) connected to the water outlet end of the wastewater channel is turned on, the water flow sensor or the water flow switch monitors the change of the water flow in the wastewater channel, and feeds a signal back to the electric control device to start the wastewater pump assembly, so that wastewater is pumped in from the water inlet end and finally discharged from the water outlet end for use, namely: wastewater is preferably used.

As a more specific scheme, when the water shortage sensor is a water flow sensor or a water pressure sensor or a float switch or a water level electrode, the water shortage sensor is arranged on a front waste water channel of the waste water pump assembly; when the water shortage is monitored, the waste water pump assembly stops working and simultaneously transmits a water shortage signal to the electric control device, the electric control device controls the water replenishing electromagnetic valve to be opened, the water replenishing channel is communicated with tap water, and the tap water is timely replenished through the water replenishing channel when the waste water stops being supplied.

As another embodiment, the water shortage sensor is a float switch or a water level electrode, which is a separate fitting and is provided separately from the wastewater channel; because float switch or water level electrode are independent accessory, it can install in the waste water tank with the waste water passageway end intercommunication of intaking, promptly: float switch or water level electrode are used for monitoring the live of the water level change in the waste water tank, and when monitoring that the waste water tank is too low because of the water level, promptly: when the waste water tank is lack of water, the waste water pump assembly stops working and simultaneously transmits a water shortage signal to the electric control device, the electric control device controls the water replenishing electromagnetic valve to be opened, the water replenishing channel is communicated with the tap water, and the tap water is timely replenished through the water replenishing channel when the waste water stops being supplied.

As a more specific embodiment, when the water replenishing solenoid valve is a pilot-operated solenoid valve, the pilot-operated solenoid valve is connected with a water replenishing one-way valve; the operating principle of the pilot-operated electromagnetic valve is as follows: when the valve is electrified, the valve rod is lifted by virtue of electromagnetic force, the pilot valve port is opened, the upper cavity of the electromagnetic valve is relieved by virtue of the pilot hole, a low-high pressure difference is formed around the main valve core, and the main valve port is opened by pushing the main valve core to move upwards by fluid pressure under the action of the pressure difference; when the power is cut off, the valve rod is reset under the action of the spring force and the gravity of the main valve core, the pressure of an upper cavity of the electromagnetic valve is increased, the fluid pressure pushes the main valve core to move downwards, and the main valve port is closed. Therefore, in order to avoid that when the water supply of the tap water pipe is switched to the wastewater supply, the two ends of the pilot-operated solenoid valve are simultaneously supplied with water by the tap water pipe and the wastewater pump assembly, so that the internal water pressure of the pilot-operated solenoid valve is greater than the pressure of the upper cavity of the solenoid valve, and the pilot-operated solenoid valve cannot be reset, the pilot-operated solenoid valve is required to be connected with a water replenishing check valve, and on the other hand, the reverse entering of the tap water pipe due to the overlarge wastewater pressure is.

As a further specific scheme, the wastewater pump assembly comprises a water supply pump and a wastewater one-way valve, the water supply pump and the wastewater one-way valve are arranged on the wastewater channel in a series connection manner, the water supply pump pumps wastewater in through a water inlet end, and the wastewater is discharged through a water outlet end after passing through the water supply pump and the wastewater one-way valve; the working shaft is influenced by the monitoring state of the water use sensor and the water shortage sensor at the same time, namely: when the pressure of the wastewater channel or the water flow is monitored to be changed by the water sensor, a signal is fed back to the electric control device, the water supply pump is started to work, and wastewater is pumped in from the water inlet end and is finally discharged from the water outlet end for use; when the water shortage sensor detects that water is short, the water supply pump stops working, simultaneously transmits a water shortage signal to the electric control device, and the electric control device controls the water replenishing electromagnetic valve to be opened, so that the water replenishing channel is communicated with tap water, and the tap water is timely replenished through the water replenishing channel when the supply of waste water is stopped.

As a further optimized scheme, the waste water utilization machine is a module body, namely: with waste water passageway, moisturizing solenoid valve, with water inductor, lack of water inductor, working shaft and waste water check valve etc. set up together on same module, make between each accessory structure compacter, the volume is littleer, easy to assemble and connection.

Of course, it is also possible to provide only part of the fittings on the same module, such as: the water shortage sensor, the water supply pump, the waste water one-way valve, the water use sensor and part of the waste water channel are arranged on the same module.

As a more preferable scheme, the system can further comprise an electric control device, wherein the electric control device is respectively and electrically connected with the water shortage sensor, the water supply pump, the water use sensor and the water replenishing electromagnetic valve; that is, the waste water utilization machine can be provided with an electric control device to control the action among all accessories and realize the purpose of uninterrupted, automatic and continuous water supply; of course, the electrical control device could also be a stand-alone accessory (not manufactured or sold with the waste water utilization machine of the present invention) or the electrical control device could be intended for use on an RO reverse osmosis water purification machine.

In addition, the water sensor can be arranged between the waste water check valve on the waste water channel and the water supplementing channel joint, and also can be arranged between the water supplementing channel joint on the waste water channel and the water outlet end, namely: the water sensor is arranged behind the waste water one-way valve according to the waste water discharge direction, so that the water sensor is not limited by the waste water one-way valve, pressure or water flow change in a water using pipeline can be accurately monitored, and monitoring signals are fed back to the electric control device to automatically control the water supply pump to work.

When the wastewater utilization machine is connected with the wastewater tank and the RO reverse osmosis water purification machine, the water inlet end of the wastewater channel can be communicated with the lower part in the wastewater tank, the wastewater tank is provided with a wastewater collecting port, and the wastewater tank can be communicated with the wastewater port of the RO reverse osmosis water purification machine through the wastewater collecting port.

As another embodiment, the waste water collecting opening may be provided in a waste water passage before the water supply pump, such as: the waste water collecting port may be provided at or near the water inlet end of the waste water passage to prevent the water supply pump from sucking air to cause idle rotation.

According to the waste water utilization machine, the water inlet end of the waste water channel and the water supply pump can be arranged in the waste water tank together as required, namely: the working shaft is as the immersible pump mode, holds the anterior segment as wastewater channel together with intaking, extends into in the waste water tank.

The invention has the following beneficial effects:

(1) the waste water utilization machine can realize preferential use of waste water by arranging the water shortage sensor and the waste water pump assembly (comprising the water supply pump and the waste water one-way valve) and matching the waste water channel with a bypass and connecting a water supplementing channel (comprising a water supplementing electromagnetic valve), and achieves the purpose of uninterrupted, automatic and continuous water supply, and has simple and reasonable structure; when the water supply device is used, the water inlet end of the water supply device is connected with an external waste water tank, the water outlet end of the water supply device is connected with a water tap of a water terminal, a water supplementing channel is connected with a tap water pipe, when the water tap is opened, a water using signal can be monitored through an additionally arranged water sensor, the operation of a water supply pump is preferentially started, the purpose of using the waste water in the waste water tank firstly is realized, when the waste water in the waste water tank is insufficient, the signal is monitored by a water shortage sensor, the operation of the water supply pump is stopped through an electric control device, water supplementing electromagnetic valves are simultaneously opened to supplement the tap water, when the waste water tank stores a certain waste water amount (which can be set; the above steps are repeated, so that the preferential use of the waste water is really realized, and the purpose of uninterrupted, automatic and continuous water supply is achieved.

(2) Furthermore, this waste water utilization machine can also be through directly setting up waste water catchment mouthful on the waste water passageway before the working shaft, if: the waste water collecting port is arranged at or near the water inlet end of the waste water channel so as to avoid idle rotation caused by air suction of the water supply pump.

Drawings

FIG. 1 is a schematic view of a wastewater treatment apparatus according to a first embodiment of the present invention.

Fig. 2 is a schematic view of the waste water utilization machine of fig. 1 in cooperation with a waste water tank.

Fig. 3 is a schematic structural view of the waste water utilization machine of fig. 1 without a water shortage sensor.

Fig. 4 is a schematic view of another embodiment of fig. 2.

FIG. 5 is a schematic diagram of a waste water utilizing machine according to a second embodiment of the present invention.

Fig. 6 is a schematic structural view of the waste water utilizing machine of fig. 5.

FIG. 7 is a schematic view of a wastewater treatment apparatus according to a third embodiment of the present invention.

Detailed Description

The invention is further described with reference to the following figures and examples.

The first embodiment is as follows: referring to fig. 1 to 3, a waste water utilization machine comprises a waste water channel 18, a water supplementing channel 13, a water using sensor 5, a water shortage sensor 2 and an electric control device 6, wherein a water inlet end 11, a waste water pump assembly 10 and a water outlet end 12 are arranged on the waste water channel 18, the waste water pump assembly 10 comprises a water supplying pump 3 and a waste water one-way valve 4, the water supplying pump 3 and the waste water one-way valve 4 are arranged on the waste water channel 18 in a series connection mode, the water supplementing channel 13 is connected to the waste water channel 18 between the water outlet end 12 and the waste water pump assembly 10 in a bypass mode, a water supplementing electromagnetic valve 7 is further arranged on the water supplementing channel 13, the water using sensor 5 is arranged on the waste water channel 18 between the waste water pump assembly 10 and the water outlet end 12, and the water shortage sensor 2 is an independent accessory and is arranged separately from the waste.

In this embodiment, the water shortage sensor 2 is a float switch (which may also be a water level electrode) which is a separate accessory and is separately disposed from the wastewater channel 18. As shown in FIG. 2, taking the example that the wastewater utilization machine is communicated with the wastewater inlet of the RO reverse osmosis water purification machine through the external wastewater tank 9, the water inlet end 11 of the wastewater utilization machine is communicated with the wastewater tank 9, the top of the wastewater tank 9 is provided with a water collecting port 91, the upper part is provided with an overflow port 92, the bottom is provided with a sewage discharge port 93, the water collecting port 91 is communicated with the wastewater inlet of the RO reverse osmosis water purification machine (wastewater generated by the RO reverse osmosis water purification machine enters the wastewater tank 9 along the arrow A direction), the water outlet end 12 of the wastewater utilization machine is connected with the external faucet 30, the other end of the water replenishing electromagnetic valve 7 is connected with the tap water pipe, the electric control device 6 is connected with the power supply, the water channel 18 and the wastewater tank, float switch as the inductor that lacks water sets up in waste water tank 9, and float switch or water level electrode are used for monitoring the live of the water level change in waste water tank 9, and when monitoring waste water tank 9 because of the water level is low excessively, promptly: when the wastewater tank 9 is short of water, the wastewater pump assembly 10 stops working and simultaneously transmits a water shortage signal to the electric control device 6, the electric control device 6 controls the water replenishing electromagnetic valve 7 to be opened, the water replenishing channel 13 is communicated with tap water, and the tap water is timely replenished to the water replenishing channel 13 when the wastewater stops being supplied.

In this embodiment, the waste water utilization machine may be a module body, that is: with waste water passageway 18, moisturizing passageway 13, moisturizing solenoid valve 7, with water inductor 5, lack of water inductor 2, working shaft 3 and waste water check valve 4 etc. set up together on same module, make between each accessory structure compacter, the volume is littleer, easy to assemble and connect.

Of course, it is also possible to provide only part of the fittings on the same module, such as: the water shortage sensor 2, the water supply pump 3, the waste water check valve 4, the water use sensor 5 and a part of the pipe sections of the waste water channel are arranged on the same module (not shown), and the effects of small volume and easy assembly and disassembly can be realized.

In this embodiment, the water sensor 5 may be a water pressure sensor, a water pressure switch, a water flow sensor, a water flow switch or other monitoring devices, and the water supply pump can be controlled to operate by determining whether to use water by monitoring the real-time condition in the pipeline, which is not shown and described in detail herein.

The water sensor 5 is arranged on the waste water channel 18 between the joint of the water replenishing channel 13 and the water outlet end 12, so that the water sensor 5 is not limited by the waste water check valve 4, the pressure or water flow change in a pipeline can be accurately monitored, and a signal is fed back to the electric control device 6 to automatically control the operation of the water supply pump 3.

In this embodiment, the wastewater utilization machine has an electric control device 6, and the electric control device 6 is electrically connected with the water shortage sensor 2, the water supply pump 3, the water use sensor 5 and the water supplement electromagnetic valve 7 respectively to control the actions among all electric control accessories; of course, the electric control unit 6 may be a separate component which is not manufactured or sold together with the wastewater treatment machine of the present invention, or the electric control unit 6 may be provided in advance in the RO reverse osmosis water purification machine, so that the electric control unit 6 may be an external component in the present invention, and will not be described in detail herein.

In this embodiment, the water-replenishing solenoid valve 7 is a pilot-operated solenoid valve, and the water-replenishing solenoid valve 7 is further connected to a water-replenishing check valve 8, so that water in the wastewater channel 18 is prevented from flowing back out of the water-replenishing solenoid valve 7 (i.e., flowing back into an externally-connected tap water pipeline) through the pilot-operated solenoid valve.

Fig. 3 is a schematic structural view of the waste water utilization machine in this embodiment without the water shortage sensor, and it can be seen that, in order to facilitate connection of the connectors to the outside, the connectors are disposed on the same side of the module (housing) of the waste water utilization machine, which is shown in detail in the figure and will not be described in detail herein.

The working principle is as follows: when the waste water tank 9 is not short of water, the water supply pump 3 is in a standby state, and the start and stop of the water supply pump are controlled by the water use sensor 5. When the external faucet 30 is used (turned on), the water pressure switch detects that the water pressure in the pipeline at the rear of the water supply pump 3 drops (e.g. from 0.12MPa to 0.06MPa), the water pressure switch (representing the water usage sensor) sends a signal to the electronic control device 6, the electronic control device 6 sends a command to start the water supply pump 3, and the water supply pump 3 pumps the wastewater in the wastewater tank 9 and supplies water to the external faucet 30 in the direction of arrow B. When the waste water tank 9 is short of water, the electric control device 6 controls the water replenishing electromagnetic valve 7 to be electrified and opened, and the water supply pump 3 is stopped, so that tap water from the tap water pipe 14 enters the waste water channel 18 along the arrow C direction and then supplies water to the external water tap 30 along the arrow B direction, and uninterrupted water supply is realized.

When the external water tap 30 stops using water (is turned off), the water pressure in the pipe at the rear of the water supply pump 3 rises (for example, reaches a set value of 0.12MPa), the water pressure switch is forced to operate, a signal is sent to the electric control device 6, and the electric control device 6 sends instructions to stop the water supply pump 3 and turn off the water replenishing solenoid valve 7.

If the external water tap 30 is opened in the state of water shortage in the waste water tank 9, the water supply pump 3 is not started, and the water supplement electromagnetic valve 7 is directly opened, so that uninterrupted water supply is realized.

When the water shortage sensor 2 in the embodiment is a water level electrode, a plurality of water level electrodes can be arranged at high, middle and low positions; the water shortage sensor can also be a water pressure sensor, the water pressure sensor can be arranged in the waste water tank 9, the waste water tank 9 can be one, two or the following, as shown in fig. 4: a small water tank 110 is additionally arranged beside the waste water tank 9, the small water tank 110 is communicated with the waste water tank 9, preferably the lower parts of the small water tank 110 and the waste water tank 9 are communicated, and a water shortage sensor 2 (a water level electrode, a water pressure sensor and the like) is arranged in the small water tank 110; of course, the water shortage sensor 2 may be provided outside the waste water tank 9 as shown in the following embodiment two.

Example two: as shown in fig. 5 and fig. 6, this embodiment is similar to the first embodiment, and has the following differences: (1) the water shortage sensor 2 is a water flow sensor or a water pressure sensor or a float switch or a water level electrode, and is arranged on a front waste water channel 18 of the waste water pump assembly, namely: the position close to the water inlet end 11 is that the water inlet end 11 of the wastewater channel is communicated with the wastewater tank 9, so that the water shortage sensor 2 can monitor the water pressure or water flow signal change of flowing water in real time to monitor the water level change situation in the wastewater tank 9, so that the water shortage sensor 2 can monitor whether the wastewater tank 9 is in shortage or not in time, when the water shortage is monitored, the wastewater pump assembly 10 stops working and transmits a water shortage signal to the electric control device 6 at the same time, the electric control device 6 controls the water replenishing electromagnetic valve 7 to be opened, the water replenishing channel 13 is communicated with tap water, and the water replenishing channel can replenish tap water in time when the supply of wastewater is stopped; (2) the waste water collecting port 91 is directly provided on the waste water channel 18 in front of the water supply pump 3, as shown in fig. 5, the waste water collecting port 91 is provided on the waste water channel 18 between the water supply pump 3 and the water shortage sensor 2, of course, the waste water collecting port 91 may be provided at a position further forward than the waste water channel 18, such as: the water inlet end 11 is positioned at or near to prevent the water supply pump 3 from sucking air and causing idle rotation.

The working principle is as follows: in the embodiment, the wastewater collecting port 91 is directly communicated with the wastewater port of the RO reverse osmosis water purification machine, wastewater generated by the RO reverse osmosis water purification machine enters the wastewater channel 18 between the water supply pump 3 and the water shortage sensor 2 along the arrow A direction, and if the external faucet 30 is closed, the wastewater directly enters the wastewater tank 9 through the water shortage sensor 2 and the water inlet end 11 for storage; on the contrary, if the external water tap 30 is opened, the wastewater is directly pumped out to the external water tap 30 by the water supply pump 3 for use, and after the external water tap 30 is used and is closed, the wastewater generated by the RO reverse osmosis water purification machine passes through the water shortage sensor 2 and the water inlet end 11 and then enters the wastewater tank 9 for storage.

The working principle (the principle of uninterrupted water supply) between the external water tap 30 and the water replenishing channel 13 and the waste water tank 9 in the present embodiment is similar to that in the first embodiment, and the detailed description is not repeated here.

Fig. 6 is a schematic structural diagram of a second waste water utilization machine according to this embodiment, and it can be seen that, in order to facilitate connection of the connectors to the outside, the connectors (including the waste water collecting port) are disposed on the same side of the module (housing) of the waste water utilization machine, as shown in detail in the figure, and the working principle thereof is not described in detail herein.

Example three: as shown in fig. 7, this embodiment is similar to the first embodiment and the second embodiment, wherein the following two differences exist: firstly, the water replenishing electromagnetic valve 7 adopts an electromagnetic valve body capable of preventing backflow, so that a water replenishing one-way valve can be saved; secondly, the water sensor 5 is disposed in the waste water channel 18 between the bypass connection of the water replenishing channel 13 and the waste water pump assembly 10, which also achieves the object of the present invention, and the working principle is similar to that of the first embodiment, and will not be described in detail here.

Claims

1. The utility model provides a waste water utilizes machine, includes waste water passageway (18), is equipped with into water end (11), waste water pump subassembly (10) and goes out water end (12) on waste water passageway (18), characterized by, still including moisturizing passageway (13), water inductor (5) and lack of water inductor (2), moisturizing passageway (13) bypass is connected on waste water passageway (18) between a water end (12) and waste water pump subassembly (10), is provided with moisturizing solenoid valve (7) on moisturizing passageway (13), on waste water passageway (18) between water end (12) and waste water pump subassembly (10) is set up in water inductor (5), lack of water inductor (2) set up on waste water passageway (18), or lack of water inductor (2) are independent accessory and waste water passageway (18) separation setting.

2. The wastewater utilization machine according to claim 1, wherein the water sensor (5) is a water pressure sensor or a water pressure switch.

3. The wastewater utilization machine according to claim 1, wherein the water sensor (5) is a water flow sensor or a water flow switch.

4. A waste water utilization machine according to any one of claims 1-3, wherein the water shortage sensor (2) is a water flow sensor or a water pressure sensor or a float switch or a water level electrode, which is provided on the waste water passage (18) in front of the waste water pump assembly (10).

5. A waste water utilizing machine according to any one of claims 1 to 3, wherein said water shortage sensor (2) is a float switch or a water level electrode which is provided separately from the waste water passage (18) as a separate fitting.

6. The wastewater utilization machine according to claim 1, wherein the water-replenishing solenoid valve (7) is a pilot-operated solenoid valve, and the pilot-operated solenoid valve is connected with a water-replenishing check valve (8).

7. A waste water utilizing machine according to any one of claims 1 to 3, wherein said waste water pump unit (10) comprises a water supply pump (3) and a waste water check valve (4), said water supply pump (3) and said waste water check valve (4) being disposed in series on said waste water passage (18).

8. The waste water utilization machine as claimed in claim 7, wherein the waste water utilization machine is a module body.

9. The waste water utilization machine according to claim 7, further comprising an electric control device (6), wherein the electric control device (6) is electrically connected with the water shortage sensor (2), the water supply pump (3), the water use sensor (5) and the water supplement electromagnetic valve (7) respectively.

10. The waste water utilizing machine according to claim 7, further comprising a waste water collecting port (91), wherein the waste water collecting port (91) is provided in the waste water passage (18) in front of the water supply pump (3).