Mining emulsion preparation system and control method thereof

Abstract

The invention relates to a mining emulsified liquid preparation system and a control method thereof.The mining emulsified liquid preparation system comprises a mixer, a water inlet of the mixer is used for being connected with a water source, and an oil inlet of the mixer is used for being connected with an emulsified oil storage device after sequentially passing through an emulsified oil flowmeter and a proportional ball valve; an outlet of the mixer passes through the emulsion flow meter and then is used for being connected with the emulsion storage device, data collected by the emulsified oil flow meter and the emulsion flow meter is transmitted to the collection station, the collection station uploads the data to the control station, and the control station controls the opening degree of the proportional ball valve. And by controlling the opening degree of the proportional ball valve, the actual emulsified oil flow and the target emulsified oil flow are kept the same, so that the emulsified liquid meeting the target concentration is obtained, a concentration sensor which is prone to errors is bypassed, and the accuracy is high.

Description

Technical Field

[0001] The invention relates to a mining emulsion dispensing system, belonging to the field of coal, and also relates to a control method of the mining emulsion dispensing system. Background Art

[0002] Emulsion is a key hydraulic transmission medium and is widely used in industrial fields such as mining support equipment and hydraulic presses. However, the concentration of the emulsion has a direct impact on the life and cost of the equipment. Usually in actual use, emulsified oil is mixed with pure water at a ratio of 3% to 5% to obtain the emulsion. If the concentration is too low, the equipment is susceptible to erosion and corrosion by water, which shortens its service life and increases maintenance costs. On the contrary, too high a concentration will lead to excessive consumption of the emulsion, thereby increasing production costs. In actual operation, the emulsion is often manually configured, but this method is affected by many uncertain factors, making it difficult to maintain the concentration of the emulsion within the ideal range. At the same time, since the effect of the emulsion is affected, the staff needs to invest more labor and time to maintain the equipment and adjust the hydraulic system, which further increases the production cost and work intensity.

[0003] The Chinese patent specification with the publication number CN115582068A provides an automatic proportioning method for emulsions. The general idea of ​​adjusting the concentration of the emulsion is to add emulsified oil or pure water to adjust the concentration of the emulsion when the concentration of the emulsion does not meet the requirements. In order to mix evenly, emulsified oil is added. When adding pure water, emulsified oil is added first. When adding emulsified oil alone, the booster pump motor must be turned on to ensure uniform mixing. When the liquid level exceeds the limit, the pure water and emulsified oil motors must be stopped. When adding water alone or emulsified oil alone, a second adjustment must be made after a period of time to prevent uneven concentration in the local area of ​​the liquid tank. The above-mentioned adjustment of the concentration of the emulsion requires the concentration sensor to remain stable and accurate at all times. However, in actual use, the concentration sensor is easily affected by external factors such as emulsified oil products, air temperature and humidity, and there may be foam in the pipeline during the measurement process. The measurement result often has a large error with the value of the handheld detection instrument, and is easily affected by emulsified oil products, air temperature and humidity, etc. Therefore, it is not correct to rely on the concentration sensor to adjust the final emulsion concentration of emulsified oil or pure water. Summary of the invention

[0004] The object of the present invention is to provide a mining emulsion preparation system to solve the problem of inaccurate emulsion concentration caused by large sensor error in the prior art which relies on concentration sensors to adjust emulsified oil or pure water.

[0005] In order to solve the above problems, the mining emulsion dispensing system involved in the present invention adopts the following technical scheme: a mining emulsion dispensing system, including a mixer, the water inlet of the mixer is used to be connected to a water source, the oil inlet of the mixer is used to be connected to an emulsified oil storage device after passing through an emulsified oil flowmeter and a proportional ball valve in sequence, the outlet of the mixer is used to be connected to an emulsion storage device, the data collected by the emulsified oil flowmeter and the emulsion flowmeter are transmitted to a collection station, the collection station uploads the data to a control station, and the control station controls the opening of the proportional ball valve.

[0006] The outlet of the mixer is connected to an emulsion storage device after passing through an emulsion flow meter.

[0007] The emulsified oil flow meter is a gear flow meter.

[0008] The emulsion flowmeter is a turbine flowmeter.

[0009] A control method for a mining emulsion dispensing system adopts the following technical solution:

[0010] A control method for a mining emulsion dispensing system, the mining emulsion dispensing system comprises a mixer, the water inlet of the mixer is used to be connected to a water source, the oil inlet of the mixer is used to be connected to an emulsion oil storage device after passing through an emulsion oil flow meter and a proportional ball valve in sequence, the outlet of the mixer is used to be connected to an emulsion storage device, the data collected by the emulsion oil flow meter and the emulsion flow meter are transmitted to a collection station, the collection station uploads the data to a control station, and the control station controls the opening of the proportional ball valve. The control method comprises the following steps:

[0011] Step 1: Set the expected emulsion concentration value in the parameters of the control station. Then, the control station calculates the expected emulsified oil flow rate target value according to the upper limit of the mixer's preparation capacity, that is, the emulsion flow rate at the maximum preparation capacity of the mixer, according to formula (11). The control station sends the target value to the collection station.

[0012] F oil-goal =∝×(C emul-set ×F) (11)

[0013] Among them, F oil-goal Indicates the target value of emulsified oil flow, C emul-set Indicates the set emulsion concentration value, F is the emulsion flow rate when the mixer has the maximum preparation capacity, ∝ indicates the opening and closing coefficient of the proportional ball valve,

[0014] Step 2: The collection station collects the emulsified oil flow meter, that is, the real-time emulsified oil flow F oil , calculate the real-time emulsified oil flow value and the target value F oil-goalIf there is a gap, the control station will issue an adjustment command to the proportional ball valve. If there is no gap, no adjustment command will be issued to keep the proportional ball valve at its current opening and closing degree.

[0015] Step 3: After receiving the adjustment command, the proportional ball valve adjusts the valve opening and closing according to the input control signal to achieve the expected emulsified oil flow target value. Calculate the real-time emulsified oil flow F oil and emulsified oil flow target value F oil-goal The process of adjusting the gap and controlling the opening and closing degree of the proportional ball valve is as follows:

[0016] When F oil-goal >F oil When F oil-goal ;

[0017] When F oil-goal =F oil When the control station does not control the opening and closing degree of the proportional ball valve, the emulsified oil flow rate remains unchanged;

[0018] When F oil-goal <F oil When F oil-goal ;

[0019] Step 4: This round of control ends, and the above steps are executed again. The collection station recollects real-time emulsion flow data and calculates the current emulsion concentration according to formula (2):

[0020]

[0021] Among them, C emul Indicates the real-time emulsion concentration value, F emul Indicates the current emulsion flow rate collected, F oil Indicates the current emulsified oil flow rate collected. The control station calculates the emulsion concentration based on the real-time value C emul and setting value C emul-set Keep the current opening and closing degree of the ball valve, or repeat steps 1, 2, and 3. Calculate the real-time value of the emulsion concentration C emul and setting value C emul-set The gap is:

[0022] When C emul >C emul-set Repeat steps 1, 2, and 3;

[0023] When C emul =C emul-set When the ball valve is opened, the current opening and closing degree is maintained;

[0024] When C emul<C emul-set Repeat steps 1, 2, and 3.

[0025] A control method for a mining emulsion dispensing system adopts the following technical solution:

[0026] A control method for a mining emulsion dispensing system, the mining emulsion dispensing system comprises a mixer, the water inlet of the mixer is used to be connected to a water source, the oil inlet of the mixer is used to be connected to an emulsion oil storage device after passing through an emulsion oil flow meter and a proportional ball valve in sequence, the outlet of the mixer is used to be connected to an emulsion storage device after passing through an emulsion flow meter, the data collected by the emulsion oil flow meter and the emulsion flow meter are transmitted to a collection station, the collection station uploads the data to a control station, the control station controls the opening of the proportional ball valve, and the control method comprises the following steps:

[0027] Step 1: Set the expected emulsion concentration value in the parameters of the control station, and then the control station collects the emulsion flow meter data, that is, the real-time emulsion flow, and calculates the expected emulsion oil flow target value according to formula (1). The control station sends the target value to the collection station.

[0028]

[0029] Among them, F oil-goal Indicates the target value of emulsified oil flow, C emul-set Indicates the set emulsion concentration value, F emul represents the current emulsion flow rate collected, ∝ represents the opening and closing coefficient of the proportional ball valve,

[0030] Step 2: The collection station collects the emulsified oil flow meter, that is, the real-time emulsified oil flow F oil , calculate the real-time emulsified oil flow value and the target value F oil-goal If there is a gap, the control station will issue an adjustment command to the proportional ball valve. If there is no gap, no adjustment command will be issued to keep the proportional ball valve at its current opening and closing degree.

[0031] Step 3: After receiving the adjustment command, the proportional ball valve adjusts the valve opening and closing according to the input control signal to achieve the expected emulsified oil flow target value. Calculate the real-time emulsified oil flow F oil and emulsified oil flow target value F oil-goal The process of adjusting the gap and controlling the opening and closing degree of the proportional ball valve is as follows:

[0032] When F oil-goal >F oil When F oil-goal ;

[0033] When F oil-goal =F oilWhen the control station does not control the opening and closing degree of the proportional ball valve, the emulsified oil flow rate remains unchanged;

[0034] When F oil-goal <F oil When F oil-goal ;

[0035] Step 4: This round of control ends, and the above steps are executed again. The collection station recollects real-time emulsion flow data and calculates the current emulsion concentration according to formula (2):

[0036]

[0037] Among them, C emul Indicates the real-time emulsion concentration value, F emul Indicates the current emulsion flow rate collected, F oil Indicates the current emulsified oil flow rate collected. The control station calculates the emulsion concentration based on the real-time value C emul and setting value C emul-set Keep the current opening and closing degree of the ball valve, or repeat steps 1, 2, and 3. Calculate the real-time value of the emulsion concentration C emul and setting value C emul-set The gap is:

[0038] When C emul >C emul-set Repeat steps 1, 2, and 3;

[0039] When C emul =C emul-set When the ball valve is opened, the current opening and closing degree is maintained;

[0040] When C emul <C emul-set Repeat steps 1, 2, and 3.

[0041] The emulsified oil flow meter is a gear flow meter.

[0042] The emulsion flowmeter is a turbine flowmeter.

[0043] The control method of the present invention obtains the target emulsified oil flow rate through the emulsion flow rate, and controls the opening of the proportional ball valve so that the actual emulsified oil flow rate is kept consistent with the target emulsified oil flow rate, thereby obtaining an emulsion that meets the target concentration, bypassing the concentration sensor that is prone to errors, and having higher accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following is a brief introduction to the drawings required for use in the embodiment:

[0045] Figure 1 It is a system diagram of the mining emulsion liquid preparation system of the present invention;

[0046] Figure 2 The present invention is a flow chart of a control method of a mining emulsion dispensing system. DETAILED DESCRIPTION

[0047] In order to make the technical purpose, technical solution and beneficial effects of the present invention clearer, the technical solution of the present invention is further described below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only 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 herein can be arranged and designed in various different configurations.

[0048] The specific embodiment of magnetic eraser involved in the present invention, Figure 1 The water inlet of the mixer is used to be connected to the water source, the oil inlet of the mixer is used to be connected to the emulsified oil storage device after passing through the emulsified oil flowmeter and the proportional ball valve, the outlet of the mixer is used to be connected to the emulsion storage device, the data collected by the emulsified oil flowmeter and the emulsion flowmeter are transmitted to the collection station, the collection station uploads the data to the control station, and the control station controls the opening of the proportional ball valve.

[0049] An emulsion flow meter is also serially arranged between the outlet of the mixer and the emulsion storage device.

[0050] The emulsified oil flowmeter here is a gear flowmeter. The emulsion liquid flowmeter here is a turbine flowmeter.

[0051] Embodiment 1 of a control method for a mining emulsion dispensing system, in Figure 1 and Figure 2 In the following steps:

[0052] Step 1: Set the expected emulsion concentration value in the parameters of the control station, and then the control station collects the emulsion flow meter data, that is, the real-time emulsion flow, and calculates the expected emulsion oil flow target value according to formula (1). The control station sends the target value to the collection station.

[0053]

[0054] Among them, F oil-goal Indicates the target value of emulsified oil flow, C emul-set Indicates the set emulsion concentration value, F emul represents the current emulsion flow rate collected, ∝ represents the opening and closing coefficient of the proportional ball valve,

[0055] Step 2: The collection station collects the emulsified oil flow meter, that is, the real-time emulsified oil flow F oil , calculate the real-time emulsified oil flow value and the target value F oil-goal If there is a gap, the control station will issue an adjustment command to the proportional ball valve. If there is no gap, no adjustment command will be issued to keep the proportional ball valve at its current opening and closing degree.

[0056] Step 3: After receiving the adjustment command, the proportional ball valve adjusts the valve opening and closing according to the input control signal to achieve the expected emulsified oil flow target value. Calculate the real-time emulsified oil flow F oil and emulsified oil flow target value F oil-goal The process of adjusting the gap and controlling the opening and closing degree of the proportional ball valve is as follows:

[0057] When F oil-goal >F oil When F oil-goal ;

[0058] When F oil-goal =F oil When the control station does not control the opening and closing degree of the proportional ball valve, the emulsified oil flow rate remains unchanged;

[0059] When F oil-goal <F oil When F oil-goal ;

[0060] Step 4: This round of control ends, and the above steps are executed again. The collection station recollects real-time emulsion flow data and calculates the current emulsion concentration according to formula (2):

[0061]

[0062] Among them, C emul Indicates the real-time emulsion concentration value, F emul Indicates the current emulsion flow rate collected, F oil Indicates the current emulsified oil flow rate collected. The control station calculates the emulsion concentration based on the real-time value C emul and setting value C emul-set Keep the current opening and closing degree of the ball valve, or repeat steps 1, 2, and 3. Calculate the real-time value of the emulsion concentration C emul and setting value C emul-set The gap is:

[0063] When C emul >C emul-set Repeat steps 1, 2, and 3;

[0064] When Cemul =C emul-set When the ball valve is opened, the current opening and closing degree is maintained;

[0065] When C emul <C emul-set Repeat steps 1, 2, and 3.

[0066] The emulsified oil flowmeter here is a gear flowmeter. The emulsion liquid flowmeter here is a turbine flowmeter.

[0067] Embodiment 2 of a control method for a mining emulsion dispensing system, combined with Figure 1 and Figure 2 The difference between this embodiment and the embodiment 1 of the control method of the above-mentioned mining emulsion liquid preparation system is that no emulsion flow meter is set. In the specific production, the preparation capacity of the mixer is maximized. The specific steps are as follows:

[0068] Step 1: Set the expected emulsion concentration value in the parameters of the control station. Then, the control station calculates the expected emulsified oil flow rate target value according to the upper limit of the mixer's preparation capacity, that is, the emulsion flow rate at the maximum preparation capacity of the mixer, according to formula (11). The control station sends the target value to the collection station.

[0069] F oil-goal =∝×(C emul-set ×F) (11)

[0070] Among them, F oil-goal Indicates the target value of emulsified oil flow, C emul-set Indicates the set emulsion concentration value, F is the emulsion flow rate when the mixer has the maximum preparation capacity, ∝ indicates the opening and closing coefficient of the proportional ball valve,

[0071] Step 2: The collection station collects the emulsified oil flow meter, that is, the real-time emulsified oil flow F oil , calculate the real-time emulsified oil flow value and the target value F oil-goal If there is a gap, the control station will issue an adjustment command to the proportional ball valve. If there is no gap, no adjustment command will be issued to keep the proportional ball valve at its current opening and closing degree.

[0072] Step 3: After receiving the adjustment command, the proportional ball valve adjusts the valve opening and closing according to the input control signal to achieve the expected emulsified oil flow target value. Calculate the real-time emulsified oil flow F oil and emulsified oil flow target value F oil-goal The process of adjusting the gap and controlling the opening and closing degree of the proportional ball valve is as follows:

[0073] When F oil-goal >F oil When Foil-goal ;

[0074] When F oil-goal =F oil When the control station does not control the opening and closing degree of the proportional ball valve, the emulsified oil flow rate remains unchanged;

[0075] When F oil-goal <F oil When F oil-goal ;

[0076] Step 4: This round of control ends, and the above steps are executed again. The collection station recollects real-time emulsion flow data and calculates the current emulsion concentration according to formula (2):

[0077]

[0078] Among them, C emul Indicates the real-time emulsion concentration value, F emul Indicates the current emulsion flow rate collected, F oil Indicates the current emulsified oil flow rate collected. The control station calculates the emulsion concentration based on the real-time value C emul and setting value C emul-set Keep the current opening and closing degree of the ball valve, or repeat steps 1, 2, and 3. Calculate the real-time value of the emulsion concentration C emul and setting value C emul-set The gap is:

[0079] When C emul >C emul-set Repeat steps 1, 2, and 3;

[0080] When C emul =C emul-set When the ball valve is opened, the current opening and closing degree is maintained;

[0081] When C emul <C emul-set Repeat steps 1, 2, and 3.

[0082] The emulsion oil flowmeter here is a gear flowmeter, which calculates the flow value by measuring the rotation of the fluid passing through the gears. When the fluid passes through, the gears start to rotate, and the rotation speed is proportional to the fluid flow rate. Since the emulsion oil has viscosity, the gear flowmeter is selected as the device to calculate the emulsion oil flow. The emulsion flowmeter here is a turbine flowmeter, which uses the interaction between the turbine blades and the fluid to measure the flow. When the fluid passes through, the turbine blades start to rotate, and the rotation speed is proportional to the fluid flow rate. Since the emulsion has low viscosity, the lower-cost and more applicable turbine flowmeter is selected as the device to calculate the emulsion flow.

[0083] The collection station in the above embodiment is a device that collects and adjusts the emulsified oil flow rate to a set flow rate value. During the automatic proportioning process of the emulsion, it compares the deviation between the flow signal of the emulsified oil flow meter detected and the set flow rate value, and the control system built into the collection station issues instructions to enable the proportional ball valve to automatically adjust the flow rate, so that the flow rate in the pipeline is always maintained at the set value, and the accuracy of the flow rate is guaranteed in real time.

[0084] The control station in the above embodiment is a device for collecting and adjusting the emulsion concentration. By calculating the emulsion flow rate and executing the emulsion oil flow target value algorithm, the emulsion oil flow target value required under the current set emulsion concentration value is calculated and the target value is sent to the collection station.

[0085] The acquisition station and the control station in the above embodiments are programmed by the processor to complete the required functions, which can be derived by technicians in this field without creative work.

[0086] The expected emulsion concentration values ​​in the above embodiments generally take values ​​between 0 and 8.

[0087] In the above embodiment, ∝ represents the opening and closing coefficient of the proportional ball valve, and the value of this coefficient is related to C emul-set For details, please refer to Table 1.

[0088] Table 1 Correspondence between the proportional ball valve opening and closing coefficient and the set emulsion concentration value

[0089]

[0090] Finally, it should be noted that the above embodiments are only used to illustrate but not limit the technical solutions of the present invention, and any equivalent substitutions of the present invention and any modifications or partial substitutions that do not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A mining emulsion preparation system, characterized in that: It includes a mixer, the water inlet of the mixer is used to be connected to a water source, the oil inlet of the mixer is used to be connected to an emulsified oil storage device after passing through an emulsified oil flowmeter and a proportional ball valve in turn, the outlet of the mixer is used to be connected to an emulsion storage device, the data collected by the emulsified oil flowmeter and the emulsion flowmeter are transmitted to a collection station, the collection station uploads the data to a control station, and the control station controls the opening of the proportional ball valve.

2. The mining emulsion preparation system according to claim 1, characterized in that: The outlet of the mixer is connected to an emulsion storage device after passing through an emulsion flow meter.

3. The mining emulsion preparation system according to claim 2, characterized in that: The emulsified oil flow meter is a gear flow meter.

4. The mining emulsion liquid preparation system according to claim 1, 2 or 3, characterized in that: The emulsion flowmeter is a turbine flowmeter.

5. A control method for a mining emulsion preparation system, characterized in that: The mining emulsion dispensing system includes a mixer, the water inlet of the mixer is used to be connected to a water source, the oil inlet of the mixer is used to be connected to an emulsified oil storage device after passing through an emulsified oil flow meter and a proportional ball valve in sequence, the outlet of the mixer is used to be connected to an emulsified liquid storage device, the data collected by the emulsified oil flow meter and the emulsified liquid flow meter are transmitted to a collection station, the collection station uploads the data to a control station, and the control station controls the opening of the proportional ball valve. The control method includes the following steps: Step 1: Set the expected emulsion concentration value in the parameters of the control station. Then, the control station calculates the expected emulsified oil flow rate target value according to the upper limit of the mixer's preparation capacity, that is, the emulsion flow rate at the maximum preparation capacity of the mixer, according to formula (11). The control station sends the target value to the collection station. F oil-goal = ∝ × (C emul-set ×F) (11) Among them, F oil-goal Indicates the target value of emulsified oil flow, C emul-set Indicates the set emulsion concentration value, F is the emulsion flow rate when the mixer has the maximum preparation capacity, ∝ indicates the opening and closing coefficient of the proportional ball valve, Step 2: The collection station collects the emulsified oil flow meter, that is, the real-time emulsified oil flow F oil , calculate the real-time emulsified oil flow value and the target value F oil-goal If there is a gap, the control station will issue an adjustment command to the proportional ball valve. If there is no gap, no adjustment command will be issued to keep the proportional ball valve at its current opening and closing degree. Step 3: After receiving the adjustment command, the proportional ball valve adjusts the valve opening and closing according to the input control signal to achieve the expected emulsified oil flow target value. Calculate the real-time emulsified oil flow F oil and emulsified oil flow target value F oil-goal The process of adjusting the gap and controlling the opening and closing degree of the proportional ball valve is as follows: When F oil-goal >F oil When F oil-goal ; When F oil-goal =F oil When the control station does not control the opening and closing degree of the proportional ball valve, the emulsified oil flow rate remains unchanged; When F oil-goal <F oil When F oil-goal ; Step 4: This round of control ends, and the above steps are executed again. The collection station recollects real-time emulsion flow data and calculates the current emulsion concentration according to formula (2): Among them, C emul Indicates the real-time emulsion concentration value, F emul Indicates the current emulsion flow rate collected, F oil Indicates the current emulsified oil flow rate collected. The control station calculates the emulsion concentration based on the real-time value C emul and setting value C emul-set Keep the current opening and closing degree of the ball valve, or repeat steps 1, 2, and 3. Calculate the real-time value of the emulsion concentration C emul and setting value C emul-set The gap is: When C emul >C emul-set Repeat steps 1, 2, and 3; When C emul =C emul-set When the ball valve is opened, the current opening and closing degree is maintained; When C emul <C emul-set Repeat steps 1, 2, and 3.

6. A control method for a mining emulsion preparation system, characterized in that: The mining emulsion dispensing system includes a mixer, the water inlet of the mixer is used to be connected to a water source, the oil inlet of the mixer is used to be connected to an emulsified oil storage device after passing through an emulsified oil flow meter and a proportional ball valve in sequence, the outlet of the mixer is used to be connected to an emulsion storage device after passing through an emulsified liquid flow meter, the data collected by the emulsified oil flow meter and the emulsified liquid flow meter are transmitted to a collection station, the collection station uploads the data to a control station, and the control station controls the opening of the proportional ball valve. The control method includes the following steps: Step 1: Set the expected emulsion concentration value in the parameters of the control station, and then the control station collects the emulsion flow meter data, that is, the real-time emulsion flow, and calculates the expected emulsion oil flow target value according to formula (1). The control station sends the target value to the collection station. F oil-goal = ∝×(C emul-set ×F emul ) (1) Among them, F oil-goal Indicates the target value of emulsified oil flow, C emul-set Indicates the set emulsion concentration value, F emul represents the current emulsion flow rate collected, ∝ represents the opening and closing coefficient of the proportional ball valve, Step 2: The collection station collects the emulsified oil flow meter, that is, the real-time emulsified oil flow F oil , calculate the real-time emulsified oil flow value and the target value F oil-goal If there is a gap, the control station will issue an adjustment command to the proportional ball valve. If there is no gap, no adjustment command will be issued to keep the proportional ball valve at its current opening and closing degree. Step 3: After receiving the adjustment command, the proportional ball valve adjusts the valve opening and closing according to the input control signal to achieve the expected emulsified oil flow target value. Calculate the real-time emulsified oil flow F oil and emulsified oil flow target value F oil-goal The process of adjusting the gap and controlling the opening and closing degree of the proportional ball valve is as follows: When F oil-goal >F oil When F oil-goal ; When F oil-goal =F oil When the control station does not control the opening and closing degree of the proportional ball valve, the emulsified oil flow rate remains unchanged; When F oil-goal <F oil When F oil-goal ; Step 4: This round of control ends, and the above steps are executed again. The collection station recollects real-time emulsion flow data and calculates the current emulsion concentration according to formula (2): Among them, C emul Indicates the real-time emulsion concentration value, F emul Indicates the current emulsion flow rate collected, F oil Indicates the current emulsified oil flow rate collected. The control station calculates the emulsion concentration based on the real-time value C emul and setting value C emul-set Keep the current opening and closing degree of the ball valve, or repeat steps 1, 2, and 3. Calculate the real-time value of the emulsion concentration C emul and setting value C emul-set The gap is: When C emul >C emul-set Repeat steps 1, 2, and 3; When C emul =C emul-set When the ball valve is opened, the current opening and closing degree is maintained; When C emul <C emul-set Repeat steps 1, 2, and 3.

7. The control method of the mining emulsion liquid preparation system according to claim 6, characterized in that: The emulsified oil flow meter is a gear flow meter.

8. The control method of the mining emulsion liquid preparation system according to claim 6 or 7, characterized in that: The emulsion flowmeter is a turbine flowmeter.

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