CN101858100B - Washing water collecting device and method - Google Patents

Abstract

The invention discloses a washing water collecting device and a washing water collecting method. The device comprises a washer, a toilet, a storage tank, a water inlet pipe and drainage pipes, wherein the water inlet pipe is communicated with a drainage channel of the washer and is arranged at a water inlet opening on the lower part of the storage tank; two drainage pipes are connected with the water inlet pipe through a three-way separating valve; the drainage pipes are connected with a filtering device and an overflow pipeline of the storage tank respectively; the three-way separating valve can only realize the communication between the water inlet pipe and one drainage pipe; a float switch connected with a water channel and a drainage pump supplying water to the toilet are also arranged in the storage tank; and the collecting device automatically collects and repeatedly uses the washing water by controlling the three-way separating valve and the drainage pump. The washing water collecting device has the advantages of simple structure, suitability for promotion and use and very good application prospect.

Description

A washing water collection device and method

technical field

The invention relates to the field of washing machines, in particular to a washing water collecting device and method.

Background technique

On January 12, 2009, the World Bank released "Solving China's Water Scarcity: Suggestions on Several Issues Concerning Water Resources Management" in response to China's three-year water shortage situation. Coincidentally, on February 2, the annual meeting of the World Economic Forum in Davos proposed that the world will fall into "water bankruptcy" within 20 years, so water may be more valuable for investment than oil. The toilet is an essential sanitary ware in modern family life, but too much water consumption by the flush horse is also a problem. , In the domestic water of residents, flushing water accounts for 27% of the total water consumption. Roughly, if you use a 5-liter saving toilet, according to (4 urinations per day, 1 stool per person), the water consumption will be 15 liters per person. For a family of three, the average daily water consumption will be 45 liters. Weekly water consumption The volume will reach about 300 liters. If calculated according to the non-water-saving toilet, the water consumption will at least double.

The washing machine is also an essential household appliance in modern life. The ordinary wave-wheel washing machine consumes about 150 liters of water for one wash. If it is calculated twice a week, it needs about 300 liters of water. But relatively speaking, the water quality of the toilet is The requirements are not very high, so it is feasible to use the water after washing to flush the toilet. If the washing water is dirty and the water requirements are increased, use the rinsed water after filtering, anti-virus and anti-bacterial treatment for flushing The toilet seat fits perfectly.

Through the above analysis, if the combination of washing machine and toilet is used to save water, it is of great practical significance for a family, and more importantly, it can contribute to solving the problem of the country and the lack of fresh water resources on the earth. In practice Advocate the concept of environmental protection and water saving in life.

Patent No.: ZL 200720190108.7 utility model patent discloses a water-saving and emission-reducing tank for a washing machine, including a water tank, a water pipe and a check valve. The three are connected together, but there is no water in the water tank that will cause the toilet to be unusable, and the water in the washing machine cannot be processed and judged to cause clothing to block the toilet and pollute the toilet.

Patent No.: ZL200520132059.2 utility model patent discloses a reusable water-saving toilet. A waste water inlet line is added to the toilet, and the waste water from the wash basin and washing machine can be used to flush the toilet to achieve the purpose of water saving. The disadvantage of the invention is that there is no special waste water storage device, and the waste water flows directly into the water tank. In almost all cases, the tap water has filled the water tank, and the incoming waste water pollutes the water in the tank and cannot be stored. Save water, but pollute water.

The invention patent of patent application 200510030052.4 discloses a household return water device, which is composed of a drain pipe, a pipeline booster pump, an upper water storage tank, a lower water storage tank, and a return water pipe, which can clean the washing machine and the shower in the later stage. The excess water enters the prefabricated water storage tank through the pumping device and the return pipe for storage, and is used for subsequent toilets. The problem of this device is that automatic control cannot be performed between the water in the water storage tank and the toilet, and the water entering the water storage tank cannot be judged, filtered, sterilized, etc., which brings inconvenience to people's use.

In view of this, the present invention is proposed.

Contents of the invention

The object of the present invention is to provide a washing water collection device, which can automatically fully utilize the drainage of the washing machine to the toilet water, and realize the recycling of water resources. In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

A laundry water collecting device, comprising a washing machine, a toilet, a water storage tank, a water inlet pipe and a drain pipe, the water inlet pipe communicates with the drainage channel of the washing machine and is arranged at the water inlet at the lower part of the water storage tank, and the two drain pipes pass through The three-way sorting valve is connected with the water inlet pipe, and the drain pipe is respectively connected with the filter device and the overflow pipe of the water storage tank. The three-way sorting valve can only realize that the water inlet pipe is connected with a drain pipe; There is a float switch connected to the running water channel and a drain pump for water supply to the toilet. The collection device realizes automatic collection of laundry water by controlling the three-way sorting valve and the drain pump.

The washing water collecting device also includes a sensor which is arranged at the water inlet of the water storage tank and can detect the turbidity of the washing water.

The float switch controls whether to open the running water channel according to the change of the water level in the water storage tank.

The height of the drainage pump is lower than the float switch and 5-10cm, preferably 8cm, higher than the bottom of the water storage tank; a drain connected to the overflow pipe is also provided above the water storage tank.

A retractable water pipe connected to the water tank is installed inside the water tank of the described toilet. The height of the water pipe is 0.9-1 times of the height of the toilet water tank. A magnet float is arranged in the water pipe, and the position of the float is consistent with the water level in the water tank. ; The outside of the toilet is also provided with a reed pipe, and the height of the reed pipe is 0.8-1 times of the highest water level of the toilet water tank.

The filter device is a gauze with 3-5 layers, and the gauze is provided with a solid slow-release disinfectant substance, which is in the form of a sheet, block, cylinder, or powder, and the filter device can filter laundry water. impurities and sterilize the laundry water. The washing machine is an upper drainage type.

The second object of the present invention is to provide a method for collecting laundry water, which adopts the following technical scheme:

A kind of laundry water collecting method, described collecting method comprises the steps:

(1) The laundry water discharged from the washing machine is discharged into the water storage tank through the water inlet pipe;

(2) Judging whether the turbidity of the laundry water is suitable for collection;

(3) The laundry water suitable for collection flows through the filter device, and the filter device filters, sterilizes and disinfects the laundry water, and the treated laundry water is stored in the water storage tank;

(4) The float switch of the running water channel in the water storage tank judges whether the laundry water reaches the set water level to control whether the running water channel needs to be opened;

(5) The magnet float in the water pipe in the toilet water tank detects the water level of the water tank, and the computer board controls the drainage pump in the water storage tank to supply water to the toilet water tank according to the variation of the water level.

The step (2) is: the sensor judges whether the turbidity of the laundry water is suitable for collection, if it is suitable for collection, the computer board opens the water storage tank pipeline valve, and performs step (3); if it is not suitable for collection, the computer board opens the overflow pipe valve , the laundry water is directly discharged through the drain pipe connected to the overflow pipe; or the step (2) is: the user judges whether the turbidity of the laundry water is suitable for collection, and if it is suitable for collection, the user chooses to open the water inlet pipe and the water storage tank to filter For the valve between the devices, perform step (3); if it is not suitable for collection, the user chooses to open the valve between the water inlet pipe and the overflow pipe, and the laundry water is directly discharged through the drain pipe connected to the overflow pipe.

The step (5) is: when the water level of the toilet water tank is lower than the maximum water level, the drain pump of the water storage tank is turned on, and the laundry water enters the toilet water tank from the water storage tank; when the water level of the water tank rises to the maximum water level, the magnet float The reed switch on the outside of the toilet is magnetized to make the contact of the reed switch conduct, and the computer board closes the drain pump to stop water from entering the water tank.

The laundry water collection device and method disclosed in the present invention can utilize the current washing machine with an upper drainage function to set up a water storage tank specially for collecting laundry water. The water storage tank can store the laundry water discharged after washing. The pipeline communicates with the water inlet of the water storage tank, and the water inlet is arranged at the bottom of the water tank and communicates with the water inlet pipe.

There are two drain pipes connected to the water inlet inside the water storage tank, and there is a three-way sorting valve between the water inlet pipe and the two drain pipes. When in use, the three-way sorting valve can ensure that when a water outlet is connected with the water inlet When the other water outlet is closed, when the three-way sorting valve is energized, the water outlet connected to the water inlet is closed, the previously closed water outlet is opened, and water can flow out from another pipeline. Specifically in the present invention, the two water pipes connected to the three-way sorting valve are respectively a drain outlet connected to the overflow pipe of the water tank, that is, a channel that can directly discharge water to the sewer pipe, and another drain pipe connected to allow water to flow to Filtration device, the filtration device among the present invention is the gauze of 3-5 layers, is provided with solid slow-release sterilizing substance in the gauze, and its shape is flake, massive, cylindrical, powdery, and its composition Same as the existing disinfectants, such as the slow-release disinfectant can be chlorine dioxide slow-release tablets. The filtering device can filter the impurities in the laundry water and perform sterilization and disinfection treatment on the laundry water, and the laundry water is stored in the water storage tank after being sterilized and disinfected.

The water inlet of the present invention can optionally be equipped with a sensor for detecting the turbidity of the laundry water. The sensor can detect the turbidity of the laundry water in time to judge whether the laundry water is suitable for collection. The computer board controls the three-way sorting according to the information fed back by the sensor. Whether the valve needs to be energized. When the sensor judges that the laundry water is not suitable for collection, the computer board controls the three-way sorting valve to cut off the power, opens the overflow pipe valve, closes the water storage tank pipe valve, and the laundry water is discharged to the sewer through the drain pipe connected to the overflow pipe. pipeline; when the sensor judges that the laundry water is suitable for collection, the computer board controls the three-way sorting valve to be energized, opens the water storage tank pipeline valve, closes the overflow pipeline valve, and the laundry water is discharged to the filter through the drain pipe connected to the water storage tank pipeline. The device is used for treatment, and the treated water is stored in the water storage tank for use.

When the laundry water collection device of the present invention does not have a sensor that can judge the laundry water turbidity, the three-way sorting valve connecting the two drain pipes and the water inlet pipe is a manual three-way sorting valve, and the user selects and proceeds according to the specific situation. Drainage pipes connected by water pipes. For example, when the washing water for the first time is dirty, the user can open the valve between the water inlet pipe and the overflow pipe to discharge the dirty water directly to the sewer; when the washing water is relatively clean, the user can choose to open it. A valve between the water inlet pipe and the filter unit of the water storage tank directs the laundry water through the filter unit to be stored in the water storage tank.

In addition, the present invention can also be arranged on a washing machine of a bottom drainage type. When the washing machine is a bottom drainage type, a booster pump needs to be added inside the washing machine.

The water storage tank of the present invention is equipped with the float switch that is connected with running water channel (the structure of this float switch and the float switch in the toilet is exactly the same), when the water in the water storage tank is used to a certain extent, the water in the water storage tank reaches the device Set the water level. If the set water level is the remaining water that can be flushed 5 times, the float switch will drop because there is no buoyancy of water. After falling, the float switch will open and tap water can enter the water tank. After entering the set water level, the float switch will The switch floats under the buoyancy of the water to close the water inlet channel of the tap water, where the set water level can be set by the user according to specific conditions.

Also be provided with a drainage pump in the water storage tank, the height position of this drainage pump will be lower certain height than the position of float switch, but higher than the certain height of water storage tank bottom, as 10cm. It can also be calculated according to the volume to flush the toilet twice, such as 10 liters of water. The purpose is: 1. When the water in the water tank is reduced to a certain level, the tap water is replenished in time to prevent the drainage pump from failing to pump water. 2. Try to avoid the precipitation of the water pumped by the drainage pump, which will affect the life of the drainage pump and the water containing impurities will be pumped into the toilet, blocking the water inlet pipe inside the toilet, and at the same time avoid residual impurities on the toilet wall after flushing the toilet. In addition, the top of the water storage tank is also provided with a drain outlet connected to the overflow pipe. When the water in the toilet tank has reached the highest water level and the water storage tank has reached the maximum water storage capacity, the laundry water will pass through the top of the water storage tank and communicate with the overflow pipe. The drain drains directly to the sewer. In addition, the bottom of the water storage tank is also provided with a sewage outlet, which can be used for cleaning the water storage tank.

The toilet described in the present invention can be installed in existing family, only need install a water pipe that communicates with the water tank inside the toilet water tank, the height of this water pipe is the same or close with existing toilet, as the height of this water pipe is toilet 0.9-1 times the height of the water tank. The water pipe can be stretched, and its purpose is to stretch the water pipe to match the use of toilets of different heights. In addition, users can increase or decrease the water consumption of each flush of the toilet according to their own needs, so that a single telescopic pipe can meet the requirements. The water pipe is equipped with a float with a magnet, and the position of the float is consistent with the water level in the water tank. In addition, a dry reed switch needs to be installed outside the toilet. The height of the dry reed switch is 0.8-1mm of the highest water level of the water tank. times, when the water level of the water tank rises to the highest water level or the height of the reed switch, the magnet will magnetize the reed switch, and the contacts will be turned on. After the computer board receives the information, it can disconnect the power supply of the water tank drain pump to avoid drain pump failure. Kept working. The structure of reed switch is water and electricity isolation, safe and reliable.

Adopt above-mentioned technical scheme, the present invention has following beneficial effect:

1. The structure of the present invention is simple. It only needs to add a water storage tank between the existing washing machine and the toilet. The whole process is automatically controlled and easy to use.

2. The present invention can make full use of the washing water discharged from the washing machine, greatly saves water resources, and has considerable economic and social benefits.

Description of drawings

Fig. 1 structural representation of washing water collecting device of the present invention

Fig. 2 structural representation of washing water collecting device of the present invention

Fig. 3 schematic flow chart of laundry water collection method of the present invention

Description of main components

1 Washing machine 2 Water inlet pipe 3 Sensor 4 Three-way sorting valve 5 Drain pipe 6 Drain pipe 7 Filter device 8 Float switch 9 Tap water channel 10 Sewage outlet 11 Drainage pump 12 Water storage tank 13 Water pipe 14 Float 15 Dry reed switch 16 Drain pipe 17 Toilet 18 overflow port

Detailed ways

The present invention will be further described in detail below in conjunction with the examples.

Example 1

The laundry water collection device shown in Figure 1 includes a washing machine 1, a toilet 17, a water storage tank 12, a water inlet pipe 2 and a drain pipe, and the water inlet pipe 2 communicates with the drainage channel of the washing machine and is located at the water inlet at the bottom of the water storage tank 12 Two drain pipes are connected to the water inlet pipe 2 through the three-way sorting valve 4, and the drain pipes are respectively connected to the filter device 7 of the water storage tank 12 and the overflow pipe. The three-way sorting valve 4 can only realize the connection between the water inlet pipe 2 and one The drain pipe is connected; the water storage tank 12 is also provided with a float switch 8 connected to the tap water channel 9 and a drain pump 11 that supplies water to the toilet 17. The collection device realizes the automatic washing water by controlling the three-way sorting valve 4 drain pump 11. collect.

The washing machine 1 of the collecting device of the present invention is an upper drainage type. The collection device also includes a sensor 3 which can detect the turbidity of the washing water at the water inlet of the water storage tank 12 and a filter device 7 above the water storage tank 12. The filter device 7 is a three-layer gauze, and A slow-release disinfection substance is provided, and the slow-release disinfection substance is a chlorine dioxide slow-release tablet. The filter device can filter impurities in the laundry water and carry out sterilization and disinfection treatment on the laundry water. The lower part of the water storage tank 12 is provided with a drainage pump 11 for water supply to the toilet. The height of the drainage pump 11 is lower than the float switch 8 and 8 cm higher than the bottom of the water storage tank 12; Port 18, and the bottom is provided with a sewage outlet 10.

A retractable water pipe 13 communicating with the water tank is installed in the toilet 17 of the collecting device of the present invention. The height of the water pipe 13 is 0.95 times of the height of the toilet water tank. The position is consistent with the water level in the water tank; the outside of the toilet 17 is also provided with a reed switch 15, and the height of the reed switch 15 is consistent with the height of the highest water level of the toilet water tank.

As shown in Figure 3, during use, the washing water discharged from the washing machine 1 enters the water storage tank 12 through the water inlet pipe 2; the sensor 3 at the water inlet of the water storage tank 12 judges whether the turbidity of the washing water is suitable for collection; if it is not suitable for collection, The computer board opens the valve of the overflow pipe, and the laundry water is directly discharged through the drain pipe 5 connected to the overflow pipe; Sterilization and disinfection treatment, the treated laundry water is stored in the water storage tank 12; the float switch 8 of the tap water channel 9 in the water storage tank 12 judges whether the laundry water reaches the set water level to control whether the tap water channel needs to be opened; when the float switch 8. Judging that the water level of the water storage tank 12 reaches the set water level, the float switch 8 opens the tap water channel 9, and tap water enters the water storage tank 12. When the float switch 8 judges that the water level reaches the maximum water level of the water storage tank 12, the tap water channel 9 is closed.

The magnet float 14 in the water pipe 13 in the toilet water tank detects the water level of the water tank, and the computer board controls the drainage pump 11 in the water storage tank 12 to supply water to the toilet water tank according to the variation of the water level. When the water level of the toilet water tank is lower than the maximum water level, the drain pump 11 of the water storage tank is opened, and the laundry water enters the toilet water tank from the water storage tank 12; The magnetization of the reed switch 15 makes the contacts of the reed switch conductive, and the computer board closes the drain pump 11 to stop water intake to the water tank.

Example 2

The laundry water collection device shown in Figure 2 includes a washing machine 1, a toilet 17, a water storage tank 12, a water inlet pipe 2 and a drain pipe, and the water inlet pipe 2 communicates with the drainage channel of the washing machine and is located at the water inlet at the bottom of the water storage tank 12 Two drain pipes are connected to the water inlet pipe 2 through the three-way sorting valve 4, and the drain pipes are respectively connected to the filter device 7 of the water storage tank 12 and the overflow pipe. The three-way sorting valve 4 can only realize the connection between the water inlet pipe 2 and one The drain pipe is connected; the water storage tank 12 is also provided with a float switch 8 connected to the tap water channel 9 and a drain pump 11 that supplies water to the toilet 17. The collection device realizes washing water by controlling the three-way sorting valve 4 and the drain pump 11. Automatic collection.

The washing machine 1 of the collecting device of the present invention is a drainage type, and the bottom of the washing machine is provided with a booster pump. The collecting device also includes a filter device 7 arranged on the top of the water storage tank 12, the filter device 7 is a 5-layer gauze, and the gauze is provided with a slow-release disinfectant, which is chlorine dioxide The slow-release block, the filter device can filter the impurities in the laundry water and perform sterilization and disinfection treatment on the laundry water. The bottom of the water storage tank 12 is provided with a drainage pump 11 for water supply to the toilet. The height of the drainage pump 11 is lower than the float switch 8 and 5 cm higher than the bottom of the water storage tank 12; Port 18, and the bottom is provided with a sewage outlet 10.

A retractable water pipe 13 communicating with the water tank is installed in the toilet 17 of the collecting device of the present invention. The height of the water pipe 13 is the same as the height of the toilet water tank. Consistent with the water level in the water tank; the outside of the toilet 17 is also provided with a reed switch 15, and the height of the reed switch 15 is 0.9 times of the highest water level of the toilet water tank.

As shown in Figure 3, during use, the laundry water discharged from the washing machine 1 enters the water storage tank 12 through the water inlet pipe 2; When the washing water is dirty, the user can open the valve between the water inlet pipe 2 and the overflow pipe to discharge the dirty water directly to the sewer; when the washing water is relatively clean, the user can choose to open the valve between the water inlet pipe 2 and the filter device 3 valve, the laundry water is discharged through the filter device 3 to be stored in the water storage tank 12 . The float switch 8 of the tap water channel 9 in the water storage tank 12 judges whether the laundry water reaches the set water level to control whether the tap water channel needs to be opened; when the float switch 8 judges that the water level of the water storage tank 12 reaches the set water level, the float switch 8 turns on the tap water Channel 9, tap water enters the water storage tank 12, when the float switch 8 judges that the water level reaches the highest water level of the water storage tank 12, the tap water channel 9 is closed.

The magnet float 14 in the water pipe 13 in the toilet water tank detects the water level of the water tank, and the computer board controls the drainage pump 11 in the water storage tank 12 to supply water to the toilet water tank according to the variation of the water level. When the water level of the toilet water tank is lower than the maximum water level, the drain pump 11 of the water storage tank is opened, and the laundry water enters the toilet water tank from the water storage tank 12; The magnetization of the reed switch 15 makes the contacts of the reed switch conductive, and the computer board closes the drain pump 11 to stop water intake to the water tank.

Example 3

The laundry water collection device shown in Figure 1 includes a washing machine 1, a toilet 17, a water storage tank 12, a water inlet pipe 2 and a drain pipe, and the water inlet pipe 2 communicates with the drainage channel of the washing machine and is located at the water inlet at the bottom of the water storage tank 12 Two drain pipes are connected to the water inlet pipe 2 through the three-way sorting valve 4, and the drain pipes are respectively connected to the filter device 7 of the water storage tank 12 and the overflow pipe. The three-way sorting valve 4 can only realize the connection between the water inlet pipe 2 and one The drain pipe is connected; the water storage tank 12 is also provided with a float switch 8 connected to the tap water channel 9 and a drain pump 11 that supplies water to the toilet 17. The collection device realizes washing water by controlling the three-way sorting valve 4 and the drain pump 11. Automatic collection.

The washing machine 1 of the collecting device of the present invention is an upper drainage type. The collection device also includes a sensor 3 which can detect the turbidity of the washing water at the water inlet of the water storage tank 12 and a filter device 7 above the water storage tank 12. The filter device 7 is a 4-layer gauze. A slow-release disinfection substance is provided, and the slow-release disinfection substance is a chlorine dioxide slow-release tablet. The filter device can filter impurities in the laundry water and carry out sterilization and disinfection treatment on the laundry water. The lower part of the water storage tank 12 is provided with a drainage pump 11 for water supply to the toilet. The height of the drainage pump 11 is lower than the float switch 8 and 10 cm higher than the bottom of the water storage tank 12; Port 18, and the bottom is provided with a sewage outlet 10.

A retractable water pipe 13 communicating with the water tank is installed in the toilet 17 of the collecting device of the present invention. Consistent; toilet 17 outsides are also provided with a reed switch 15, and the height of this reed switch 15 is 0.8 times of the highest water level of the toilet water tank.

As shown in Figure 3, during use, the washing water discharged from the washing machine 1 enters the water storage tank 12 through the water inlet pipe 2; the sensor 3 at the water inlet of the water storage tank 12 judges whether the turbidity of the washing water is suitable for collection; if it is not suitable for collection, The computer board opens the valve of the overflow pipe, and the laundry water is directly discharged through the drain pipe 5 connected to the overflow pipe; Sterilization and disinfection treatment, the treated laundry water is stored in the water storage tank 12; the float switch 8 of the tap water channel 9 in the water storage tank 12 judges whether the laundry water reaches the set water level to control whether the tap water channel needs to be opened; when the float switch 8. Judging that the water level of the water storage tank 12 reaches the set water level, the float switch 8 opens the tap water channel 9, and tap water enters the water storage tank 12. When the float switch 8 judges that the water level reaches the maximum water level of the water storage tank 12, the tap water channel 9 is closed.

The magnet float 14 in the water pipe 13 in the toilet water tank detects the water level of the water tank, and the computer board controls the drainage pump 11 in the water storage tank 12 to supply water to the toilet water tank according to the variation of the water level. When the water level of the toilet water tank is lower than the maximum water level, the drain pump 11 of the water storage tank is opened, and the laundry water enters the toilet water tank from the water storage tank 12; The magnetization of the reed switch 15 makes the contacts of the reed switch conductive, and the computer board closes the drain pump 11 to stop water intake to the water tank.

The implementations in the above examples can be further combined or replaced, and the examples are only descriptions of preferred embodiments of the present invention, and are not intended to limit the concept and scope of the present invention. Various changes and improvements to the technical solutions of the present invention made by those skilled in the art belong to the protection scope of the present invention.

Claims (9)

1. A laundry water collection device, comprising a washing machine, a toilet, a water storage tank, a water inlet pipe and a drain pipe, characterized in that: the water inlet pipe communicates with the drainage channel of the washing machine and is located at the water inlet of the water storage tank bottom , there are two drain pipes inside the water storage tank connected with the water inlet pipe, there is a three-way sorting valve between the water inlet pipe and the two drain pipes, and the drain pipes are respectively connected to the filter device and the overflow pipe of the water storage tank, the said The three-way sorting valve can only realize the connection between the water inlet pipe and a drain pipe; the laundry water collection device also includes a sensor that can detect the turbidity of the laundry water at the water inlet of the water storage tank, and the sensor can detect the turbidity of the laundry water in time. The turbidity of the water is detected to determine whether the laundry water is suitable for collection. The computer board controls the three-way sorting valve to be turned on and off according to the information fed back by the sensor; the water storage tank is also equipped with a float switch connected to the tap water channel and a drain to the toilet. The pump, the float switch controls whether to open the tap water channel according to the water level change in the water storage tank; the collection device realizes the automatic collection of laundry water by controlling the three-way sorting valve and the drain pump. 2. The laundry water collecting device according to claim 1, characterized in that: the height of the drain pump is lower than the float switch and 5-10 cm higher than the bottom of the water storage tank; A drain connected to an overflow pipe. 3. The laundry water collecting device according to claim 2, wherein the height of the drain pump is lower than the float switch and 8 cm higher than the bottom of the water storage tank. 4. The washing water collecting device according to claim 1, characterized in that: a retractable water pipe communicating with the water tank is installed inside the water tank of the toilet, and the height of the water pipe is 0.9-1 times the height of the water tank of the toilet , The water pipe is provided with a float of magnet, the position of the float is consistent with the water level in the water tank; a dry reed switch is also arranged on the outside of the toilet, and the height of the dry reed switch is 0.8-1 times of the highest water level of the toilet water tank. 5. The laundry water collection device according to claim 1, characterized in that: the filter device is a gauze with 3-5 layers, and the gauze is provided with a solid slow-release disinfectant substance, which is in the form of a sheet , block, cylinder, powder, the filter device can filter the impurities in the laundry water and carry out sterilization and disinfection treatment on the laundry water. 6. The laundry water collecting device according to claim 1, characterized in that: said washing machine is an upper drain type. 7. A collection method of the washing machine collection device according to any one of claims 1-6, characterized in that: the collection method comprises the following steps: (1) The laundry water discharged from the washing machine is discharged into the water storage tank through the water inlet pipe; (2) Judging whether the turbidity of the laundry water is suitable for collection; (3) The laundry water suitable for collection flows through the filter device, and the filter device filters, sterilizes and disinfects the laundry water, and the treated laundry water is stored in the water storage tank; (4) The float switch of the running water channel in the water storage tank judges whether the laundry water reaches the set water level to control whether the running water channel needs to be opened; (5) The magnet float in the water pipe in the toilet water tank detects the water level of the water tank, and the computer board controls the drainage pump in the water storage tank to supply water to the toilet water tank according to the variation of the water level. 8. The collection method according to claim 7, characterized in that: the step (2) is: the sensor judges whether the turbidity of the laundry water is suitable for collection, and if it is suitable for collection, the computer board opens the pipeline valve of the water storage tank to execute Step (3): If it is not suitable for collection, the computer board opens the overflow pipe valve, and the laundry water is directly discharged through the drain pipe connected to the overflow pipe; or the step (2) is: the user judges whether the turbidity of the laundry water is suitable Collection, if it is suitable for collection, the user chooses to open the valve between the water inlet pipe and the filter device of the water storage tank, and then performs step (3); if it is not suitable for collection, the user chooses to open the valve between the water inlet pipe and the overflow pipe, and the laundry water Discharge directly through drainpipe connected to overflow pipe. 9. The collection method according to claim 7, characterized in that: the step (5) is: when the water level of the toilet water tank is lower than the maximum water level, the drainage pump of the water storage tank is turned on, and the washing water enters from the water storage tank When the water level of the water tank rises to the highest water level, the magnet float will magnetize the dry reed switch on the outside of the toilet to make the contact of the reed switch conduct, and the computer board will close the drain pump to stop water entering the water tank.