Method and system for taking upper-layer water of reservoir for steelmaking

Abstract

The invention discloses a method and system for taking upper water of a reservoir for steelmaking, and the method comprises the following steps: S1, before the system is automatically operated, checking whether manual / automatic change-over switches of each variable frequency pump, each vacuum pump and each valve are at automatic positions or not; s2, the real-time water level of the reservoir is obtained, whether the water level of the reservoir is lower than or equal to 6.5 m or not is judged, when the judgment result is that the water level of the reservoir is higher than 6.5 m, a siphon mode is adopted, and when the water level of the reservoir is lower than or equal to 6.5 m, a water pumping mode is adopted. By adopting the method, the reservoir middle water source can be accurately obtained, extraction of water with high bottom hardness is avoided, the water supply quality is improved, the impurity content is reduced, and the addition amount of various treating agents is reduced, so that the steel quality is improved.

Description

Technical Field

[0001] The present application relates to the technical field of steelmaking, and in particular to a method and system for taking upper layer water from a reservoir for steelmaking. Background Art

[0002] In the existing steelmaking process, water is required in all links, and water is directly extracted from the river. In order to ensure continuous water supply, the water inlet of the existing water intake pipeline is set at the lower part of the river to ensure continuous water supply. As a result, only the lower water in the river reservoir can be extracted. Although this part of water can be filtered and treated to reduce the impurity content, the lower water is close to the silt, has high hardness, and high sediment content on rainy days. In the rainy season, as mud accumulates day by day, it will also cause equipment pipeline blockage, reduced flow, and reduced heating efficiency.

[0003] At the same time, water with high hardness requires larger dosages of precipitants and flocculants in the water treatment process, which increases production costs.

[0004] The information disclosed in the background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] In response to the above technical problems, the present application provides a method and system for taking water from the upper layer of a reservoir for steelmaking. The method can avoid extracting water from the middle and lower parts of the reservoir while ensuring normal water supply.

[0006] The present application provides a method for taking upper layer water from a reservoir for steelmaking, comprising the following steps:

[0007] Step S1: Before the system automatically runs, first check whether the "manual / automatic" conversion switches of each variable frequency pump, vacuum pump and each valve are in the automatic position;

[0008] Step S2: Obtain the real-time water level of the reservoir and determine whether the water level of the reservoir is less than or equal to 6.5 meters. When the determination result is that the water level of the reservoir is higher than 6.5 meters, the siphon mode is adopted; when the water level of the reservoir is less than or equal to 6.5 meters, the pumping mode is adopted;

[0009] Step S3: When the pumping mode is adopted, the first to fourth variable frequency pumps are set to the pumping mode one by one, and the "given frequency" and "given opening" of the first to fourth variable frequency pumps are set respectively, the "given frequency" is set to 30-40HZ and the "given opening" is set to 25-30%, and then the first to fourth variable frequency pumps are started to pump water until the required amount of water is obtained, and then the pumping is stopped;

[0010] Step S4: When the siphon mode is adopted, the pumping modes of the first to fourth variable frequency pumps are closed one by one, and then the siphon mode of at least one of the first to fourth variable frequency pumps is started, and the "given frequency" and "given opening" of the variable frequency pump are set. The "given frequency" is set to 30-40HZ and the "given opening" is set to 30-40%, and then the variable frequency pump is started for siphoning. When negative pressure is generated by siphoning in the pipeline, the variable frequency pump automatically stops running. After obtaining the required amount of water, the water outlet regulating valve is closed to complete water extraction.

[0011] Preferably, the pumping process comprises the following steps:

[0012] Step S31: Open the exhaust valve, and open the water outlet regulating valve according to the set opening, and the exhaust valve is fully opened;

[0013] Step S32: respectively opening the first to fourth vacuum solenoid valves, and delaying opening the first to third vacuum pumps to evacuate the pump bodies of the first to fourth variable frequency pumps;

[0014] Step S33: After the vacuum degree in the pump bodies of the first to fourth variable frequency pumps reaches 0, the first to fourth variable frequency pumps are started to pump water in and out at a set frequency, and the air in the pipeline is discharged from the exhaust valve during pumping.

[0015] Preferably, the exhaust valve is electrically connected to a liquid level sensor disposed at the top of the exhaust pipe. When the liquid level sensor detects the liquid level, the pipeline liquid level is full, the air in the pipeline has been exhausted, and the exhaust valve is closed; when the liquid level sensor does not detect the liquid level, the pipeline liquid level is not full, there is still air in the pipeline, and the exhaust valve is opened to exhaust.

[0016] Preferably, the siphoning process comprises the following steps:

[0017] Step S41: Open the exhaust valve, close the water outlet regulating valve, and open the exhaust valve to the desired position;

[0018] Step S42: opening the first to fourth vacuum solenoid valves respectively, and delaying opening the first to third vacuum pumps to evacuate the pump bodies of the first to fourth variable frequency pumps;

[0019] Step S43: After the vacuum degree meets the requirement, the first to fourth variable frequency pumps are started to operate at the set frequency, and the air in the pipeline is discharged from the exhaust valve;

[0020] Step S44: the exhaust valve is electrically connected to the liquid level sensor disposed at the top of the exhaust pipe. When the liquid level sensor detects the liquid level, the pipeline is full and the air in the pipeline has been exhausted. At this time, the first to fourth variable frequency pumps and the exhaust valve are closed, and the first to fourth variable frequency pumps are completely stopped and the exhaust valve is completely closed.

[0021] Step S45: Open the regulating valve according to the set opening to perform siphoning.

[0022] Preferably, in the siphon mode, the initial opening of the water outlet regulating valve is greater than 40%.

[0023] Preferably, it includes: Step S5: The operator obtains the current operating time and cumulative operating time of the first to fourth variable frequency pumps in real time through the display, and obtains the instantaneous water flow rate, outlet cumulative flow rate, outlet pressure, outlet turbidity, outlet pH value, and outlet ammonia nitrogen value of the system.

[0024] Another aspect of the present application further provides a system for the above method, comprising: a first variable frequency pump, a second variable frequency pump, a third variable frequency pump, a fourth variable frequency pump, a first vacuum solenoid valve, a second vacuum solenoid valve, a third vacuum solenoid valve, a fourth vacuum solenoid valve, a siphon valve, an exhaust valve, a water outlet regulating valve, a first vacuum pump, a second vacuum pump, a third vacuum pump, and a fifth vacuum solenoid valve;

[0025] The water inlets of the first variable frequency pump, the second variable frequency pump, the third variable frequency pump, the fourth variable frequency pump and the siphon valve are respectively arranged to extend into the middle area below the liquid level of the reservoir;

[0026] The first variable frequency pump, the second variable frequency pump, the third variable frequency pump, and the fourth variable frequency pump are connected to the first vacuum pump, the second vacuum pump, and the third vacuum pump pipelines through the first main pipe respectively.

[0027] The first vacuum solenoid valve, the second vacuum solenoid valve, the third vacuum solenoid valve, and the fourth vacuum solenoid valve are respectively arranged on the pipelines connected to the first main pipe by the second variable frequency pump, the third variable frequency pump, and the fourth variable frequency pump;

[0028] The water outlets of the first variable frequency pump, the second variable frequency pump, the third variable frequency pump, the fourth variable frequency pump and the siphon valve are respectively connected to the second main pipe; the second main pipe is connected to the water inlet of the water outlet regulating valve; the exhaust valve is arranged on the exhaust pipe; the exhaust pipe is arranged on one end of the second main pipe close to the water outlet regulating valve;

[0029] The fifth vacuum solenoid valve is arranged on a branch pipe communicating with the first main pipe and the second main pipe.

[0030] Preferably, it comprises: a plurality of outlet electric valves; the outlet electric valves are arranged on the first variable frequency pump,

[0031] On the pipeline connecting the second variable frequency pump, the third variable frequency pump, the fourth variable frequency pump and the second main pipe.

[0032] Preferably, it comprises: a flow sensor and a display; the flow sensor is arranged on the water outlet end of the water outlet regulating valve, and is used to detect various parameters of the water outlet; the flow sensor and the display are electrically connected.

[0033] Preferably, it comprises: a water quality monitor and a display; the water quality monitor is arranged on the water outlet end of the water outlet regulating valve, and is used to detect various parameters of the outlet water; the water quality monitor and the display are electrically connected.

[0034] The beneficial effects of this application include:

[0035] 1) The method of taking water from the upper layer of the reservoir for steelmaking provided in this application can accurately obtain the water source in the middle of the reservoir, avoid extracting water with high bottom hardness, improve the water supply quality, reduce the impurity content, and reduce the amount of various treatment agents added, thereby improving the quality of steel.

[0036] 2) The method of taking water from the upper layer of the reservoir for steelmaking provided in this application can effectively reduce the hardness of the water obtained and avoid the problem of excessive sediment content in the water after taking water by this method. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of system pipeline connections used in a method for taking upper layer water from a reservoir for steelmaking in at least one embodiment provided in the present application;

[0038] Figure 2 A screenshot of the operation interface of at least one embodiment provided in this application;

[0039] Figure 3 A screenshot of a parameter monitoring interface of a system for the method of taking upper layer water from a reservoir for steelmaking in at least one embodiment provided in the present application;

[0040] Figure 4 A schematic flow chart of a method for taking upper reservoir water for steelmaking in at least one embodiment provided in the present application. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The controller used in this embodiment is an existing structure, and the control circuit can be implemented through simple programming by technicians in this field. It belongs to the common knowledge in this field. It is only used without modification, so the control method and circuit connection are not described in detail.

[0044] The technical means that are not described in detail in this application and are not used to solve the technical problems of this application are all set according to the common knowledge in the field, and can be implemented in a variety of common knowledge settings.

[0045] See also Figures 1 to 4 The method for taking upper layer water from a reservoir for steelmaking provided in the present application comprises the following steps:

[0046] Step S1: Before the system automatically runs, first check whether the "manual / automatic" conversion switch of each variable frequency pump, vacuum pump and each valve is in the automatic position; the display screen result can be used to ensure whether the conversion switch is in the automatic position. Figure 2 Shown is a screenshot of the interface when the siphon valve is not in the automatic position.

[0047] Step S2: Obtain the real-time water level of the reservoir and determine whether the water level of the reservoir is less than or equal to 6.5 meters. When the determination result is that the water level of the reservoir is higher than 6.5 meters, the siphon mode is adopted; when the water level of the reservoir is less than or equal to 6.5 meters, the pumping mode is adopted;

[0048] Step S3: When the pumping mode is adopted, the first to fourth variable frequency pumps are set to the pumping mode one by one, and the "given frequency" and "given opening" of the first to fourth variable frequency pumps are set respectively, the "given frequency" is set to 30-40HZ and the "given opening" is set to 25-30%, and then the first to fourth variable frequency pumps are started to pump water until the required amount of water is obtained, and then the pumping is stopped;

[0049] Step S4: when the siphon mode is adopted, the pumping modes of the first to fourth variable frequency pumps are closed one by one, and then the siphon mode of at least one of the first to fourth variable frequency pumps is started, and the "given frequency" and "given opening" of the variable frequency pump are set, the "given frequency" is set to 30-40HZ and the "given opening" is set to 30-40%, and then the variable frequency pump is started for siphoning. When negative pressure is generated by siphoning in the pipeline, the variable frequency pump automatically stops running, and after the required amount of water is obtained, the water outlet regulating valve is closed to complete the water intake;

[0050] By adopting this method and taking the reservoir water level of 6.5m as the limit and adopting the pumping mode when the water level is less than or equal to 6.5 meters, it can avoid pumping water from the middle and lower parts of the reservoir, improve the pumping quality, reduce impurities and water hardness in the water, reduce the amount of chemical addition, thereby reducing production costs and improving steel quality.

[0051] In a specific embodiment, the pumping process includes the following steps:

[0052] Step S31: Open the exhaust valve, and open the water outlet regulating valve according to the set opening, and the exhaust valve is fully opened;

[0053] Step S32: respectively opening the first to fourth vacuum solenoid valves, and delaying opening the first to third vacuum pumps to evacuate the pump bodies of the first to fourth variable frequency pumps;

[0054] Step S33: After the vacuum degree in the pump bodies of the first to fourth variable frequency pumps reaches 0, the first to fourth variable frequency pumps are started to pump water in and out at a set frequency, and the air in the pipeline is discharged from the exhaust valve during pumping.

[0055] In a specific embodiment, the exhaust valve is electrically connected to a liquid level sensor disposed at the top of the exhaust pipe. When the liquid level sensor detects the liquid level, the pipeline is full, the air in the pipeline has been exhausted, and the exhaust valve is closed; when the liquid level sensor does not detect the liquid level, the pipeline is not full, there is still air in the pipeline, and the exhaust valve is opened to exhaust.

[0056] In a specific embodiment, the siphoning process includes the following steps:

[0057] Step S41: Open the exhaust valve, close the water outlet regulating valve, and open the exhaust valve to the desired position;

[0058] Step S42: opening the first to fourth vacuum solenoid valves respectively, and delaying opening the first to third vacuum pumps to evacuate the pump bodies of the first to fourth variable frequency pumps;

[0059] Step S43: After the vacuum degree meets the requirement, the first to fourth variable frequency pumps are started to operate at the set frequency, and the air in the pipeline is discharged from the exhaust valve;

[0060] Step S44: the exhaust valve is electrically connected to the liquid level sensor disposed at the top of the exhaust pipe. When the liquid level sensor detects the liquid level, the pipeline is full and the air in the pipeline has been exhausted. At this time, the first to fourth variable frequency pumps and the exhaust valve are closed, and the first to fourth variable frequency pumps are completely stopped and the exhaust valve is completely closed.

[0061] Step S45: Open the regulating valve according to the set opening to perform siphoning.

[0062] In a specific embodiment, in the siphon mode, the initial opening of the water outlet regulating valve is greater than 40%, so as to quickly obtain the siphon effect.

[0063] The system can only put one variable frequency pump into siphon mode at a time. The variable frequency pump only runs when siphon occurs. When siphon occurs, the variable frequency pump automatically stops running. The outlet regulating valve can be initially adjusted to a degree greater than 40%, and after siphon occurs, the degree of opening can be adjusted according to water demand.

[0064] See also Figure 3In a specific embodiment, the method includes: Step S5: the operator obtains the current running time and cumulative running time of the first to fourth variable frequency pumps in real time through the display, and obtains the instantaneous water flow rate, cumulative outlet flow rate, outlet pressure, outlet turbidity, outlet pH value, and outlet ammonia nitrogen value of the system. This is convenient for adjusting water intake or stopping water intake according to the water quality.

[0065] Another aspect of the present application further provides a system using the method, comprising: a first variable frequency pump, a second variable frequency pump, a third variable frequency pump, a fourth variable frequency pump, a first vacuum solenoid valve, a second vacuum solenoid valve, a third vacuum solenoid valve, a fourth vacuum solenoid valve, a siphon valve, an exhaust valve, a water outlet regulating valve, a first vacuum pump, a second vacuum pump, a third vacuum pump, and a fifth vacuum solenoid valve;

[0066] The water inlets of the first variable frequency pump, the second variable frequency pump, the third variable frequency pump, the fourth variable frequency pump and the siphon valve are respectively arranged to extend into the middle area below the liquid level of the reservoir;

[0067] The first variable frequency pump, the second variable frequency pump, the third variable frequency pump, and the fourth variable frequency pump are connected to the first vacuum pump, the second vacuum pump, and the third vacuum pump pipelines through the first main pipe respectively.

[0068] The first vacuum solenoid valve, the second vacuum solenoid valve, the third vacuum solenoid valve, and the fourth vacuum solenoid valve are respectively arranged on the pipelines connected to the first main pipe by the second variable frequency pump, the third variable frequency pump, and the fourth variable frequency pump;

[0069] The water outlets of the first variable frequency pump, the second variable frequency pump, the third variable frequency pump, the fourth variable frequency pump and the siphon valve are respectively connected to the second main pipe; the second main pipe is connected to the water inlet of the water outlet regulating valve; the exhaust valve is arranged on the exhaust pipe; the exhaust pipe is arranged on one end of the second main pipe close to the water outlet regulating valve;

[0070] The fifth vacuum solenoid valve is arranged on a branch pipe communicating with the first main pipe and the second main pipe.

[0071] In a specific embodiment, it includes: a plurality of outlet electric valves; the outlet electric valves are arranged on the pipelines connecting the first variable frequency pump, the second variable frequency pump, the third variable frequency pump, the fourth variable frequency pump and the second main pipe, and are used to control the water output of the first variable frequency pump, the second variable frequency pump, the third variable frequency pump, and the fourth variable frequency pump.

[0072] In a specific embodiment, a liquid level sensor is disposed on the top of the exhaust pipe, and the liquid level sensor is electrically connected to the exhaust valve.

[0073] In a specific embodiment, it includes: a flow sensor and a display; the flow sensor is arranged on the water outlet end of the water outlet regulating valve to detect various parameters of the water outlet; the flow sensor and the display are electrically connected.

[0074] In a specific embodiment, it includes: a water quality monitor and a display; the water quality monitor is arranged on the water outlet end of the water outlet regulating valve to detect various parameters of the water outlet; the water quality monitor and the display are electrically connected.

[0075] The system can also realize: siphon valve opening and closing selection: whether to open the siphon valve on the main pipeline when setting the siphon. After the siphon valve is opened, the water flow rate will increase a lot. Siphon vacuum selection: whether to turn on the vacuum pump to draw vacuum in the main pipeline when setting the siphon. After turning it on, the duration of the siphon process may be extended. Siphon restart selection: when the siphon flow rate is lower than the set restart flow rate, the system automatically turns on the water intake pump again to exhaust the air in the pipeline and regenerate siphon.

[0076] Example:

[0077] 1. After the method and system are used to add remote automatic control pumping to the Pingdian River Reservoir, the upper water extracted contains less impurities and pollutants, and the water is clean and transparent, ensuring that the water quality of the channel meets the quality standards. Secondly, after adding remote automatic control, the water in the reservoir can be fully utilized, water consumption can be reduced, and resources can be saved. In addition, it is simple to install, easy to use, low in maintenance cost, and convenient for water workshop management

[0078] 2. Economic effect: The remote automatic control of the river boat water pumps in the Pingdian River Reservoir has been added and put into operation. The renovation is simple in design, economical in investment, easy in operation and maintenance, and saves human resources and reduces labor costs by 100% (previously 100 tons of polyacrylamide and polyaluminum chloride were used per month, and now it has been reduced to 50 tons per month). It has long-term economic benefits for the company's development (based on the current basic 600 yuan / ton / month*50*12=144,000 yuan. After the renovation).

[0079] 3. Management and social benefits: After the technical transformation, the water use stability and quality compliance of each workshop have been effectively improved, and the amount of sewage recycling water and work efficiency have been increased.

[0080] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for taking water from the upper layer of a reservoir for steelmaking, characterized in that: The following steps are involved: Step S1: Before the system automatically runs, first check whether the "manual / automatic" conversion switch of each variable frequency pump, vacuum pump and each valve is in the automatic position; Step S2: Obtain the real-time water level of the reservoir and determine whether the water level of the reservoir is less than or equal to 6.5 meters. When the determination result is that the water level of the reservoir is higher than 6.5 meters, the siphon mode is adopted; when the water level of the reservoir is less than or equal to 6.5 meters, the pumping mode is adopted; Step S3: when the pumping mode is adopted, the first to fourth variable frequency pumps are set to the pumping mode one by one, and the "given frequency" and "given opening" of the first to fourth variable frequency pumps are set respectively, the "given frequency" is set to 30-40HZ and the "given opening" is set to 25-30%, and then the first to fourth variable frequency pumps are started to pump water until the required amount of water is obtained, and then the pumping is stopped; Step S4: When the siphon mode is adopted, the pumping modes of the first to fourth variable frequency pumps are closed one by one, and then the siphon mode of at least one of the first to fourth variable frequency pumps is started, and the "given frequency" and "given opening" of the variable frequency pump are set. The "given frequency" is set to 30-40HZ and the "given opening" is set to 30-40%, and then the variable frequency pump is started for siphoning. When negative pressure is generated by siphoning in the pipeline, the variable frequency pump automatically stops running. After the required amount of water is obtained, the water outlet regulating valve is closed to complete water extraction.

2. The method for taking upper layer water from a reservoir for steelmaking according to claim 1, characterized in that: The pumping process includes the following steps: Step S31: Open the exhaust valve, and open the water outlet regulating valve according to the set opening, and the exhaust valve is fully opened; Step S32: respectively opening the first to fourth vacuum solenoid valves, and delaying opening the first to third vacuum pumps to evacuate the pump bodies of the first to fourth variable frequency pumps; Step S33: After the vacuum degree in the pump bodies of the first to fourth variable frequency pumps reaches 0, the first to fourth variable frequency pumps are started to pump water in and out at a set frequency, and the air in the pipeline is discharged from the exhaust valve during pumping.

3. The method for taking upper layer water from a reservoir for steelmaking according to claim 1, characterized in that: The exhaust valve is electrically connected to the liquid level sensor arranged at the top of the exhaust pipe. When the liquid level sensor detects the liquid level, the pipeline liquid level is full, the air in the pipeline has been exhausted, and the exhaust valve is closed; when the liquid level sensor does not detect the liquid level, the pipeline liquid level is not full, there is still air in the pipeline, and the exhaust valve is opened to exhaust.

4. The method for taking upper layer water from a reservoir for steelmaking according to claim 1, characterized in that: The siphoning process consists of the following steps: Step S41: Open the exhaust valve, close the water outlet regulating valve, and open the exhaust valve to the desired position; Step S42: opening the first to fourth vacuum solenoid valves respectively, and delaying opening the first to third vacuum pumps to evacuate the pump bodies of the first to fourth variable frequency pumps; Step S43: After the vacuum degree meets the requirement, the first to fourth variable frequency pumps are started to operate at the set frequency, and the air in the pipeline is discharged from the exhaust valve; Step S44: the exhaust valve is electrically connected to the liquid level sensor disposed at the top of the exhaust pipe. When the liquid level sensor detects the liquid level, the pipeline is full and the air in the pipeline has been exhausted. At this time, the first to fourth variable frequency pumps and the exhaust valve are closed, and the first to fourth variable frequency pumps are completely stopped and the exhaust valve is completely closed. Step S45: Open the regulating valve according to the set opening to perform siphoning.

5. The method for taking upper layer water from a reservoir for steelmaking according to claim 1, characterized in that: In siphon mode, the initial opening of the water outlet regulating valve is greater than 40%.

6. The method for taking upper layer water from a reservoir for steelmaking according to claim 1, characterized in that: include: Step S5: The operator obtains the current operating time and cumulative operating time of the first to fourth variable frequency pumps in real time through the display, and obtains the instantaneous water flow rate, outlet cumulative flow rate, outlet pressure, outlet turbidity, outlet pH value, and outlet ammonia nitrogen value of the system.

7. A system for use in the method according to any one of claims 1 to 6, characterized in that: include: The first variable frequency pump, the second variable frequency pump, the third variable frequency pump, the fourth variable frequency pump, the first vacuum solenoid valve, the second vacuum solenoid valve, the third vacuum solenoid valve, the fourth vacuum solenoid valve, the siphon valve, the exhaust valve, the water outlet regulating valve, the first vacuum pump, the second vacuum pump, the third vacuum pump, and the fifth vacuum solenoid valve; The water inlets of the first variable frequency pump, the second variable frequency pump, the third variable frequency pump, the fourth variable frequency pump and the siphon valve are respectively arranged to extend into the middle area below the liquid level of the reservoir; The first variable frequency pump, the second variable frequency pump, the third variable frequency pump, and the fourth variable frequency pump are respectively connected to the first vacuum pump, the second vacuum pump, and the third vacuum pump pipelines through the first main pipe, and the first vacuum solenoid valve, the second vacuum solenoid valve, the third vacuum solenoid valve, and the fourth vacuum solenoid valve are respectively arranged on the pipelines connected to the first main pipe by the first variable frequency pump, the second variable frequency pump, the third frequency pump, and the fourth frequency pump; The water outlets of the first variable frequency pump, the second variable frequency pump, the third variable frequency pump, the fourth variable frequency pump and the siphon valve are respectively connected to the second main pipe; the second main pipe is connected to the water inlet of the water outlet regulating valve; the exhaust valve is arranged on the exhaust pipe; the exhaust pipe is arranged on one end of the second main pipe close to the water outlet regulating valve; The fifth vacuum solenoid valve is arranged on a branch pipe communicating with the first main pipe and the second main pipe.

8. The system according to claim 7, characterized in that include: Multiple outlet electric valves; the outlet electric valves are arranged on the pipelines connecting the first variable frequency pump, the second variable frequency pump, the third variable frequency pump, the fourth variable frequency pump and the second main pipe.

9. The system according to claim 7, characterized in that include: Flow sensor, display; the flow sensor is arranged on the water outlet end of the water outlet regulating valve and is used to detect various parameters of the water outlet; Flow sensor and display are electrically connected.

10. The system according to claim 7, characterized in that include: Water quality monitor and display: The water quality monitor is arranged at the water outlet of the water outlet regulating valve and is used to detect various parameters of the water outlet; Water quality monitor and display are electrically connected.

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