CN220633795U - Gas-liquid mixing system and automatic mixing bubble water machine - Google Patents

Abstract

The utility model relates to a gas-liquid mixing system and an automatic gas-liquid mixing machine, which comprise a gas-liquid mixing container; the output end of the air supply container is connected to the air-liquid mixing container through an air inlet pipeline; the output end of the liquid supply container is connected to the gas-liquid mixing container through a liquid inlet pipeline; the control unit comprises a gas controller and a liquid controller, and is used for controlling the on-off of the air inlet pipeline and the liquid inlet pipeline respectively; an atomizing unit configured to atomize the liquid entering the gas-liquid mixing container; the liquid detection component is arranged on the liquid inlet pipeline and controls the opening of the gas controller through the PCB. The utility model has the beneficial effects that: the opening key of the air inlet pipeline is arranged on the liquid inlet pipeline, and when the system ensures that liquid is injected on the liquid inlet pipeline, the air inlet pipeline is opened to inject gas, so that the gas cannot be injected due to the fact that the gas is injected excessively in the gas-liquid mixing container.

Description

Gas-liquid mixing system and automatic mixing bubble water machine

Technical Field

The utility model relates to the technical field of gas-liquid mixing, in particular to a gas-liquid mixing system, an automatic gas-liquid mixing machine and a gas-liquid mixing method.

Background

In the related art for preparing a gas-liquid mixture, a tank gas dissolving scheme is generally adopted, a certain amount of gas needs to be stored in a tank, the gas pressure in the tank is relatively high, the hydraulic pressure when liquid is added into the tank is also relatively high, the pressure-bearing performance requirement on the tank is relatively high, and in addition, when the gas dissolved in the tank is flammable gas such as hydrogen, safety risks exist.

Patent document CN200310117311.8 discloses an aerated beverage drinking machine, in the use process, a user needs to firstly collect water from a water cup, then put the water cup with water at an aeration position, and extend an aeration pipe below the liquid surface of the water cup for aeration. The drawback of inflating in this way is mainly twofold: 1. the high-pressure gas is filled into the water cup through the gas filling pipe, so that water in the water cup is easy to splash; 2. the air charging pipe is exposed outside, and once misoperation is carried out, the sprayed high-pressure air easily causes personal harm.

The Chinese patent with the publication number of CN217887577U provides a gas-liquid mixing device, a gas-liquid mixing system and a water dispenser, wherein the gas-liquid mixing device comprises: the mixing mechanism is provided with an air inlet, a liquid inlet and a gas-liquid mixture outlet; the pressure release mechanism comprises a pressure release thin tube which is connected with the gas-liquid mixture outlet and is used for releasing the pressure of the gas-liquid mixture.

The utility model only improves the concentration of gas-liquid mixture, and the conventional method for directly introducing gas and liquid into a mixing container for mixing is still used in the mixing method.

The above two patents illustrate the problems in the prior art in the gas-liquid mixing process: 1. if the gas or the liquid is absent in the mixing process, the gas-liquid mixing failure is caused, namely, the concentration of the mixed liquid is reduced, or the gas is excessively filled, so that the gas pressure in the mixing container is large, and the liquid cannot be introduced; 2. the contact area of the gas and the liquid is insufficient, and the mixing is insufficient.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a gas-liquid mixing system.

Comprising the steps of (a) a step of,

a gas-liquid mixing vessel;

the output end of the air supply container is connected to the air-liquid mixing container through an air inlet pipeline;

the output end of the liquid supply container is connected to the gas-liquid mixing container through a liquid inlet pipeline;

the control unit comprises a gas controller and a liquid controller, and is used for controlling the on-off of the air inlet pipeline and the liquid inlet pipeline respectively;

the atomization unit is arranged in the gas-liquid mixing container and connected with the liquid inlet pipeline, so as to atomize the liquid entering the gas-liquid mixing container;

the liquid detection component is arranged on the liquid inlet pipeline and controls the opening of the gas controller through the PCB.

By adopting the technical scheme, the opening key of the air inlet pipeline is arranged on the liquid inlet pipeline, and when the system ensures that liquid is injected on the liquid inlet pipeline, the air inlet pipeline is opened for gas injection, so that the situation that liquid cannot be injected due to excessive gas injection in the gas-liquid mixing container is avoided; meanwhile, an atomization unit is arranged at the liquid outlet end to atomize the liquid, so that the contact area of the liquid and the gas is increased, and the gas and the liquid are fully mixed.

The technical scheme is further provided as follows: the liquid controller is a water inlet pump connected in series on the liquid outlet pipeline; the gas controller is a first electromagnetic valve.

Through adopting above-mentioned technical scheme, the setting of single valve for liquid can only be followed the liquid feed container towards gas-liquid mixing and easily be injected, and can not reverse injection, avoided liquid backward flow or mixed liquid backward flow to enter into the phenomenon of liquid feed container.

The technical scheme is further provided as follows: the liquid detection member is a pipeline liquid level sensor.

Through adopting above-mentioned technical scheme, liquid level detection component has higher reliability and stronger interference killing feature when detecting whether there is liquid to flow through in the water inlet pipeline, can not be interfered by vapor in the air in the liquid inlet pipeline, simultaneously, also not receive temperature, pressure, liquid colour influence, can accurately detect whether there is liquid in the liquid inlet pipeline to with the testing result transfer to the PCB board rapidly.

The technical scheme is further provided as follows: the alarm unit comprises a mixed liquid protector and an air deficiency protector; the alarm unit is connected to the PCB and alarms when the gas-liquid mixing container lacks liquid and/or the gas supply container lacks gas.

Through adopting above-mentioned technical scheme, can make the user in time know the condition in the system to make the supplement to liquid supply container or air supply container, make the system go on smoothly, avoided the gas-liquid to mix the unexpected condition such as mending fully or excessive overflow of solution in the gas-liquid mixing container.

The technical scheme is further provided as follows: the mixed liquid protector comprises a low water level probe and a high water level probe which are arranged on the gas-liquid mixing container;

the gas-lack protector comprises a pressure switch arranged on the gas inlet pipeline.

The technical scheme is further provided as follows: and a first pressure reducing valve is arranged between the pressure switch and the air supply container in the air inlet pipeline.

The utility model also provides an automatic gas-liquid mixing machine, which comprises the gas-liquid mixing system.

The device comprises a shell, wherein the liquid supply container, the gas supply container and the gas-liquid mixing container are all arranged in the shell, and a water tank switch for detecting the installation position of the water tank is arranged in the shell.

By adopting the technical scheme, when the liquid supply container is installed, the water tank switch can be triggered only by correctly installing the liquid supply container at a designated position, so that the gas-liquid mixing system is started; when the liquid supply container is not installed at the designated position, the PCB board can send an alarm signal to remind a user to reinstall.

The technical scheme is further provided as follows: a water outlet nozzle is arranged on the shell and communicated with a gas-liquid mixing container through a liquid outlet pipeline; and a water outlet pump is arranged on the liquid outlet pipeline.

The utility model also discloses a gas-liquid mixing method, which comprises the following steps:

s1, switching on a power supply and installing a water tank;

s2, after the water tank is correctly installed, the control system is started to check the gas pressure;

s3, opening the liquid control assembly, and extracting the liquid in the liquid supply container into the gas-liquid mixing container;

s4, the liquid detection component detects that liquid passes through the liquid inlet pipeline, the gas control component is opened, and the gas in the gas supply container is conveyed into the gas-liquid mixing container through the gas inlet pipeline;

s5, spraying the liquid into a gas-liquid mixing container in the form of fog particles through an atomization unit, and fully mixing the gas in the gas-liquid mixing container to form mixed liquid;

s6, when the mixed liquid protector in the gas-liquid mixing container detects a high water level, the liquid control assembly is closed, the liquid inlet pipeline is not fed with water, and the control system is closed.

The technical scheme is further provided as follows: in the step S4, when the liquid detecting member does not detect that the liquid passes, a water shortage signal is fed back to the control system, and the control system performs a water shortage alarm.

The technical scheme is further provided as follows: in the step S3, an air-lack protector is disposed on the air inlet pipeline, when the air-lack protector detects that the air pressure in the air inlet pipeline is smaller than a set value, an air-lack signal is fed back to the PCB board, the PCB board performs air-lack alarm, and meanwhile, the liquid control assembly is not started.

Compared with the prior art, the utility model has the beneficial effects that:

1. the opening key of the air inlet pipeline is arranged on the liquid inlet pipeline, and when the system ensures that liquid is injected on the liquid inlet pipeline, the air inlet pipeline is opened for gas injection, so that the situation that liquid cannot be injected due to excessive gas injection in the gas-liquid mixing container is avoided;

2. an atomization unit is arranged at the liquid outlet end to atomize the liquid, so that the contact area of the liquid and the gas is increased, and the gas and the liquid are fully mixed;

3. the alarm unit is arranged, so that a user can know the conditions in the system in time and supplement the liquid supply container or the gas supply container, the system can be smoothly carried out, and accidents such as full gas-liquid mixing and supplementing or excessive and excessive solution in the gas-liquid mixing container are avoided.

Drawings

Fig. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a schematic diagram of an explosive structure of example 2.

Fig. 3 is a schematic view of the internal mounting structure in embodiment 2.

The drawings are marked: 100. a gas-liquid mixing vessel;

200. a liquid supply container;

300. a gas supply container;

400. an atomizing unit;

500. a liquid detection member;

600. a liquid controller; the method comprises the steps of carrying out a first treatment on the surface of the

700. A gas controller;

800. a pressure switch;

900. a pressure reducing valve;

1. a housing; 1.1, a water outlet nozzle;

2. a partition plate;

3. a mixed liquor protector;

4. a water outlet pump;

6. a water tank switch.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1-3, the following examples disclose a gas-liquid mixing system, an automatic gas-bubble water mixer, and a gas-liquid mixing method.

Example 1

The embodiment discloses a gas-liquid mixing system.

Comprising the steps of (a) a step of,

a gas-liquid mixing vessel 100;

a gas supply container 300, an output end of the gas supply container 300 being connected to the gas-liquid mixing container 100 through a gas inlet pipe;

a liquid supply container 200, wherein an output end of the liquid supply container 200 is connected to the gas-liquid mixing container 100 through a liquid inlet pipeline;

the control unit comprises a gas controller 700 and a liquid controller 600, and is used for controlling the on-off of the air inlet pipeline and the liquid inlet pipeline respectively;

an atomizing unit 400 disposed in the gas-liquid mixing vessel 100 and connected to a liquid inlet pipe, for atomizing the liquid introduced into the gas-liquid mixing vessel 100;

the liquid detection member 500 is disposed on the liquid inlet line, and controls the opening of the gas controller 700 through the PCB board.

The above is the basic scheme of the present embodiment. When the system is started, the liquid controller 600 is opened, the liquid in the liquid supply container 200 is injected into the gas-liquid mixing container 100 through the liquid inlet pipeline under the action of the liquid controller 600, when the liquid flows through the liquid detection member 500 in the liquid inlet pipeline, the liquid detection member 500 detects the passing of the liquid and transmits the signal to the PCB, the PCB gives an instruction to the gas controller 700, the gas controller 700 is opened, and then the gas in the gas supply container 300 is injected into the gas-liquid mixing container 100 along the gas inlet pipeline.

When the liquid enters the atomizing unit 400 on the liquid inlet pipeline, mist particles of very small particles are formed under the atomizing action of the atomizing unit 400, and the mist particles and the gas entering the gas-liquid mixing container 100 are fully mixed to form mixed liquid.

In this embodiment, the liquid is water, the gas is CO2, and the formed mixed liquid is bubble water.

In this embodiment, the liquid supply container 200 is a water tank, and the gas supply container 300 is a gas cylinder.

In the arrangement of the embodiment, the opening key of the air inlet pipeline is arranged on the liquid inlet pipeline, and when the system ensures that liquid is injected on the liquid inlet pipeline, the air inlet pipeline is opened for gas injection, so that the situation that liquid cannot be injected due to excessive gas injection in the gas-liquid mixing container 100 is avoided; meanwhile, the atomizing unit 400 is arranged at the liquid outlet end to atomize the liquid, so that the contact area between the liquid and the gas is increased, and the gas and the liquid are fully mixed.

In this embodiment, the liquid controller 600 is a water inlet pump connected in series to the liquid outlet pipe; the gas controller 700 is a first solenoid valve.

When the liquid controller 600 is turned on, the water intake pump is turned on, and the water intake pump pumps the liquid from the liquid supply container 200, and the liquid is injected into the gas-liquid mixing container 100 through the liquid outlet pipe.

The air supply container 300 is a gas cylinder, and in an initial state, the air pressure in the air supply container 300 is greater than the external air pressure, that is, greater than the air pressure in the air intake pipe. When the first solenoid valve is opened, gas can be injected from along the gas inlet line toward the gas-liquid mixing vessel 100, so that no gas extraction device is required.

In this embodiment, the liquid detecting member 500 is a pipe liquid level sensor.

Preferably, the liquid detecting member 500 in this embodiment is a photoelectric type pipe liquid level sensor.

Working principle of photoelectric pipeline liquid level sensor: the sensor utilizes a set of infrared optical components, forms the induction line after handling through accurate structure, makes the state judgement through judging water and the light refractive index difference in the air fast and stably.

Pipeline liquid level sensor characteristics: the sensor has no mechanical moving parts inside, does not need to be debugged, has stronger anti-interference capability, has high repetition precision and reliability, is not influenced by temperature, pressure and liquid color, has less power consumption and long service life, and is compatible to design various applications.

Thanks to the characteristics of the pipeline liquid level device, in the embodiment, the liquid level detection component has higher reliability and stronger anti-interference capability when detecting whether liquid flows through the water inlet pipeline, can not be interfered by vapor in air in the liquid inlet pipeline, is not influenced by temperature, pressure and liquid color, can accurately detect whether liquid exists in the liquid inlet pipeline, and can rapidly transfer detection results to the PCB.

In this embodiment, the atomizing unit 400 is an impact atomizer.

The atomizer is an important component of an atomization system for atomizing a solution, and the performance of the atomizer has obvious influence on measurement precision, chemical interference and the like. Therefore, the atomizer is required to be stable in spray, fine and uniform in mist droplets and high in atomization efficiency.

The principle of the impact atomizer is similar to that of an air compression atomizer, namely jet atomization, and the impact atomizer utilizes compressed air to form high-speed air flow through a fine pipe orifice according to the Venturi (Venturi) jet principle, and the generated negative pressure drives liquid or other fluids to be sprayed onto a barrier together, so that liquid drops are splashed to the periphery under high-speed impact to become mist particles to be sprayed out from an air outlet pipe.

The atomizer has the following advantages: the efficient oil-free piston compressor is free of maintenance in daily life and simpler and more convenient to operate; almost no liquid residue exists, and the liquid utilization rate is high; the atomized particles are ultrafine and are not easy to collide and combine; the pure mechanical product has extremely low failure rate, low maintenance cost and long service life, and is normally used for 5-10 years.

Thanks to the above advantages of the impact atomizer, the contact area between the liquid and the gas is greatly increased in the present embodiment, so that the mixing efficiency is greatly improved, and a fully mixed solution can be obtained.

In the use of the system, the gas-liquid mixing may fail or the gas-liquid mixing may not be sufficiently performed due to the water shortage of the water supply container or the insufficient gas of the gas supply container 300, so in this embodiment, the system further includes an alarm unit, including a mixed liquid protector and a gas shortage protector; the alarm unit is connected to the PCB and alarms when the liquid in the gas-liquid mixing container 100 is absent and/or the gas supply container 300 is absent.

When the liquid in the water supply container cannot be pumped by the water inlet pump, i.e., no liquid in the liquid inlet pipe passes through the liquid detecting member 500, the first solenoid valve cannot be opened, i.e., when no liquid is injected, the liquid does not have gas injection;

when the gas in the gas supply container 300 is insufficient, the gas-lack protection gas is started, a gas-lack signal is transmitted to the PCB, and the PCB sends out a gas-lack alarm signal;

the mixed liquid protector 3 acts on the gas-liquid mixing container 100 to detect the liquid level in the gas-liquid mixing container 100, transmits a detection signal to the PCB, and performs the next operation after judging through the PCB; when the detection signal is a high liquid level, the liquid controller 600 is turned off, and at this time, liquid is not injected into the gas-liquid mixing container 100 any more, and the liquid level detection member cannot detect the passage of liquid, and the gas controller 700 is turned off through the PCB board; when the detection signal is a low liquid level, the PCB board sends an opening command to the liquid controller 600 to mix the liquid and the gas continuously injected into the gas-liquid mixing container 100.

The alarm unit can enable a user to know the conditions in the system in time and supplement the liquid supply container 200 or the gas supply container 300, so that the system can be smoothly carried out, and accidents such as full gas-liquid mixing and supplementing or excessive and excessive solution in the gas-liquid mixing container 100 are avoided.

Specifically, in the present embodiment, the mixed liquor protector 3 includes a low water level probe and a high water level probe disposed on the gas-liquid mixing vessel 100;

the air-deficiency protector includes a pressure switch 800 provided on an air intake pipe.

The mixed liquid protector 3 is arranged on the gas-liquid mixing container 100, and both the low water level probe and the high water level probe extend into the gas-liquid mixing container 100 for water level detection.

The pressure switch 800 is disposed on the intake pipe, and detects the pressure of air passing through the intake pipe. The pressure switch 800 has a set value and is turned off in an initial state. When the first solenoid valve 700 is opened, the gas in the gas supply container 300 overflows, and a pressure is generated to the pressure switch 800, and initially the pressure does not reach the set value of the pressure switch 800, the pressure switch 800 is still in a closed state, and as the pressure increases, the pressure switch 800 is opened when the pressure reaches the set value, and the gas can pass through and continue to be injected into the gas-liquid mixing container 100.

In this embodiment, the set value of the pressure is preferably set to 4.0Bar. That is, when the gas pressure in the intake pipe does not reach 4.0Bar, the pressure switch 800 is not turned on, and the PCB board determines that the gas is absent, and performs a gas absence alarm.

In this embodiment, in order to balance the pressure of the gas in the gas inlet pipe, and avoid the excessive or insufficient pressure in the gas inlet pipe, a first pressure reducing valve 900 is disposed between the pressure switch 800 and the gas supply container 300 in the gas inlet pipe.

When the gas overflows from the gas supply container 300, the gas is first depressurized to a set value by the first depressurization valve 900 and then moved in the gas supply line at an equalized pressure.

When the pressure is too high, the air inlet pipeline is easy to burst; if the pressure is too low, the gas cannot pass through the pressure switch 800, and it is necessary to accumulate a pressure sufficient to allow the gas to pass through the pressure switch 800, so that the gas injection becomes unstable.

Meanwhile, the user can adjust the concentration of the gas-liquid mixture by changing the set value of the first pressure reducing valve 900 to change the gas input efficiency.

Example 2

This example is a practical use of example 1 on a bubble water machine, including the gas-liquid mixing system described in example 1.

The device further comprises a shell 1, wherein the liquid supply container 200, the gas supply container 300 and the gas-liquid mixing container 100 are arranged in the shell 1, and a water tank switch 6 for detecting the installation position of the water tank is arranged in the shell 1.

Specifically, the inner cavity of the casing 1 is divided into an upper cavity and a lower cavity by the partition board 2, the liquid supply container 200/the gas supply container 300 and the gas-liquid mixing container 100 are all arranged in the upper cavity, and the water inlet pump 610 and the PCB board are arranged in the lower cavity.

The water tank switch 6 is arranged at the bottom of the partition board 2 and is connected with the PCB board in the cavity below. When the liquid supply container 200 is installed, the liquid supply container needs to be correctly installed at a designated position to trigger the water tank switch 6 so as to start the gas-liquid mixing system; when the liquid supply container 200 is not installed at the designated position, the PCB board can send out an alarm signal to remind the user to reinstall.

In this embodiment, the casing 1 is provided with a water outlet nozzle 1.1, and the water outlet nozzle 1.1 is communicated to the gas-liquid mixing container 100 through a liquid outlet pipeline; a water outlet pump 4 is arranged on the liquid outlet pipeline.

The water outlet button on the shell 1 is opened, the PCB board sends out an instruction, the water outlet pump 4 is opened, and the bubble water generated in the gas-liquid mixing container 100 is discharged from the water outlet nozzle 1.1 through the liquid outlet pipeline.

Example 3

This example is directed to the gas-liquid mixing method of examples 1 and 2, comprising the steps of:

s1, switching on a power supply and installing a water tank;

s2, after the water tank is correctly installed, the control system is started to check the gas pressure;

s3, opening the liquid control assembly to extract the liquid in the liquid supply container 200 into the gas-liquid mixing container 100;

s3, the liquid detection component 500 detects that liquid passes through the liquid inlet pipeline, the gas control component is opened, and the gas in the gas supply container 300 is conveyed into the gas-liquid mixing container 100 through the gas inlet pipeline;

s4, spraying the liquid into the gas-liquid mixing container 100 in the form of fog particles through the atomizing unit 400, and fully mixing the gas in the gas-liquid mixing container 100 to form mixed liquid;

s5, when the mixed liquid protector 3 in the gas-liquid mixing container 100 detects a high water level, the liquid control assembly is closed, the liquid inlet pipeline is not fed with water, and the control system is closed.

In the gas-liquid mixing process, in the step S4, when the liquid detection member 500 does not detect that the liquid passes, a water shortage signal is fed back to the control system, and the control system performs a water shortage alarm.

In this embodiment, in step S3, the air inlet pipe is provided with an air-lack protector, when the air-lack protector detects that the air pressure in the air inlet pipe is less than the set value, the air-lack signal is fed back to the PCB board, and the PCB board performs air-lack alarm, and meanwhile, the liquid control component is not started.

In this embodiment, the water shortage time is set to 20s, that is, when the running time of the water inlet pump exceeds 20s, the liquid detecting member 500 still does not detect the liquid passing, and at this time, the liquid detecting member 500 feeds back the water shortage information to the PCB board, which carries out the water shortage alarm.

The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.

Claims (8)

1. A gas-liquid mixing system, characterized in that: comprising the steps of (a) a step of,

a gas-liquid mixing container (100);

a gas supply container (300), the output end of the gas supply container (300) is connected to the gas-liquid mixing container (100) through a gas inlet pipeline;

a liquid supply container (200), wherein the output end of the liquid supply container (200) is connected to the gas-liquid mixing container (100) through a liquid inlet pipeline;

the control unit comprises a gas controller (700) and a liquid controller (600) which are respectively used for controlling the on-off of the air inlet pipeline and the liquid inlet pipeline;

an atomization unit (400) which is arranged in the gas-liquid mixing container (100) and is connected with a liquid inlet pipeline, and atomizes liquid entering the gas-liquid mixing container (100);

and a liquid detection member (500) which is arranged on the liquid inlet pipeline and controls the opening of the gas controller (700) through the PCB.

2. The gas-liquid mixing system according to claim 1, wherein: the liquid controller (600) is a water inlet pump connected in series on the liquid outlet pipeline; the gas controller is a first electromagnetic valve.

3. The gas-liquid mixing system according to claim 1, wherein: the liquid detection member (500) is a pipe liquid level sensor.

4. The gas-liquid mixing system according to claim 1, wherein: the device also comprises an alarm unit which comprises a mixed liquor protector (3) and an air deficiency protector; the alarm unit is connected to the PCB and alarms when the gas-liquid mixing container (100) lacks liquid and/or the gas supply container (300) lacks gas.

5. The gas-liquid mixing system according to claim 4, wherein: the mixed liquor protector (3) comprises a low water level probe and a high water level probe which are arranged on the gas-liquid mixing container (100);

the out-of-air protector includes a pressure switch (800) disposed on the air inlet line.

6. The gas-liquid mixing system according to claim 5, wherein: a first pressure reducing valve (900) is arranged between the pressure switch (800) and the air supply container (300) in the air inlet pipeline.

7. An automatic gas-liquid mixing machine comprising the gas-liquid mixing system of any one of claims 1-6, characterized in that: the device comprises a shell (1), wherein a liquid supply container (200), a gas supply container (300) and a gas-liquid mixing container (100) are all arranged in the shell (1), and a water tank switch (6) for detecting the installation position of a water tank is arranged in the shell (1).

8. The automatic air-bubble water mixing machine according to claim 7, wherein: a water outlet nozzle (1.1) is arranged on the shell (1), and the water outlet nozzle (1.1) is communicated with a gas-liquid mixing container (100) through a liquid outlet pipeline; and a water outlet pump (4) is arranged on the liquid outlet pipeline.