Heterogeneous substance mixing control method and system

Abstract

According to the heterogeneous material mixing control method and system, pressure in a first mixture tank and pressure in a second mixture tank serve as a power source, after the opening degree of a pipeline is adjusted to be the preset opening degree, the first mixture is circulated, mixing is started after the first mixture fills the pipeline, and then the second mixture is circulated; by adjusting the pressure in the first mixture tank and the pressure in the second mixture tank, the best mixing proportion and effect are achieved, the effect that the two materials are fused according to the preset flow is achieved, and the mixing process is optimized; in addition, the double-guarantee effect is achieved by checking the weight change and checking the accuracy of flow monitoring.

Description

Technical Field

[0001] The present invention relates to the technical field of heterogeneous material mixing, and in particular to a heterogeneous material mixing control method and system. Background Art

[0002] The existing technology mainly uses metering pumps to control the flow of materials. According to the different viscosities of the materials, the actual relationship between the speed of the metering pump and the flow is tested in advance, and the speed of the metering pump is used as the operating parameter during production. However, it is not convenient to sterilize low-pulse metering pumps, and there is no real-time detection during the production process.

[0003] Therefore, there is an urgent need to propose a heterogeneous mixing control method that can improve the control accuracy of the mixing. Summary of the invention

[0004] The object of the present invention is to provide a method for controlling the mixing of heterogeneous materials to improve the control accuracy of the mixing.

[0005] In order to solve the above-mentioned invention object, the present invention provides a method for controlling heterogeneous mixing, comprising:

[0006] Pressurizing the first mixture and the second mixture to a preset pressure, wherein the density of the first mixture is greater than that of the second mixture;

[0007] The first mixture starts to flow, the opening of the first pipeline of the first mixture is adjusted to a first preset opening, and the first flow time is waited after the first pipeline is filled with the first mixture;

[0008] The second mixture starts to flow, the opening of the second pipeline of the second mixture is adjusted to a second preset opening, and a second flow time is waited;

[0009] The pressures of the first mixture and the second mixture are adjusted respectively to achieve target flow rates.

[0010] Optionally, the process of separately adjusting the pressures of the first mixture and the second mixture to achieve a preset flow rate includes: adjusting the pressure of the first mixture at intervals of a first preset time according to a first flow rate deviation between the flow rate of the first mixture and a target flow rate.

[0011] Optionally, when the first flow rate deviation is greater than 2 L / min, reducing the pressure of the first mixture by 0.05 bar;

[0012] When the first flow rate deviation is between 0.5 L / min and 2 L / min, reducing the pressure of the first mixture by 0.02 bar;

[0013] When the first flow rate deviation is between 0.2 L / min and 0.5 L / min, reducing the pressure of the first mixture by 0.01 bar;

[0014] When the first flow deviation is between -0.2 L / min and 0.2 L / min, maintaining the current pressure;

[0015] When the first flow rate deviation is less than -2 L / min, increasing the pressure of the first mixture by 0.05 bar;

[0016] When the first flow rate deviation is between -2 L / min and -0.5 L / min, increasing the pressure of the first mixture by 0.02 bar;

[0017] When the flow rate deviation is between -0.5 L / min and -0.2 L / min, the pressure of the first mixture is increased by 0.01 bar.

[0018] Optionally, the process of separately adjusting the pressures of the first mixture and the second mixture to achieve a preset flow rate also includes: adjusting the pressure of the second mixture at intervals of a first preset time according to a second flow rate deviation between the flow rate of the second mixture and a target flow rate.

[0019] Optionally, when the second flow rate deviation is greater than 50 ml / min, reducing the pressure of the second mixture by 0.05 bar;

[0020] When the second flow rate deviation is between 20 ml / min and 50 ml / min, reducing the pressure of the second mixture by 0.02 bar;

[0021] When the second flow rate deviation is between 5 ml / min and 20 ml / min, reducing the pressure of the second mixture by 0.01 bar;

[0022] When the second flow rate deviation is between -5 ml / min and 5 ml / min, maintaining the current pressure;

[0023] When the second flow rate deviation is less than -50 ml / min, increasing the pressure of the second mixture by 0.05 bar;

[0024] When the second flow rate deviation is between -50 ml / min and -20 ml / min, increasing the pressure of the second mixture by 0.02 bar;

[0025] When the second flow rate deviation is between -20 ml / min and -5 ml / min, the pressure of the second mixture is increased by 0.01 bar.

[0026] Optionally, the process of respectively adjusting the pressures of the first mixture and the second mixture to respectively reach target flow rates further comprises the steps of:

[0027] After the flow rate regulation is stable, the remaining weight of the first mixture and the second mixture are recorded respectively at a second preset time interval;

[0028] The real-time flow rate is calculated based on the difference between the remaining weight and the original weight, and the detected flow rate is updated based on the calculated real-time flow rate.

[0029] Optionally, the method further includes: when the weight change of the second mixture is less than a threshold value, determining that the delivery of the second mixture is completed and stopping mixing.

[0030] The present invention also provides a heterogeneous material mixing control system for realizing the heterogeneous material mixing control method as described above, comprising a first pressure regulating device, a first material tank, a first pipeline, a first flow monitoring device, a first opening regulating device, a second pressure regulating device, a second material tank, a second pipeline, a second flow monitoring device, a second opening regulating device and a mixing device;

[0031] The first pipeline and the second pipeline are connected to the mixing device respectively; the first pressure regulating device and the second pressure regulating device are used to adjust the pressure of the first material tank and the second material tank respectively; the first opening regulating device and the first flow monitoring device are connected to the discharge port of the first material tank, and the first opening regulating device is close to the mixing device; the second opening regulating device and the second flow monitoring device are connected to the discharge port of the second material tank, and the second opening regulating device is close to the mixing device.

[0032] Optionally, it also includes a first air intake valve, a second air intake valve, a first bottom valve and a second bottom valve; the first air intake valve and the second air intake valve are respectively connected to the input ends of the first material tank and the second material tank, and the first bottom valve and the second bottom valve are respectively connected to the output ends of the first material tank and the second material tank.

[0033] Optionally, the mixing device includes a shearing machine, a mixing material tank and a feed valve, wherein the input end of the shearing machine is connected to the output ends of the first pipeline and the second pipeline, and the feed valve is connected between the output end of the shearing machine and the mixing material tank.

[0034] Optionally, it further includes a first weighing scale, a second weighing scale and a third weighing scale for weighing the first material tank, the second material tank and the mixed material tank respectively.

[0035] Optionally, a pressure sensor is further included, and the pressure sensor is used to detect the pressure of the first material tank and the second material tank respectively.

[0036] Compared with the prior art, the heterogeneous material mixing control method and system provided by the present invention uses the pressure in the first mixture tank and the second mixture tank as the power source, adjusts the pipeline opening to a preset opening, first circulates the first mixture, and starts mixing after the first mixture fills the pipeline, and then circulates the second mixture, and by adjusting the pressure in the first mixture tank and the second mixture tank to achieve the best mixing ratio and effect, thereby improving the mixing accuracy, achieving the effect of merging the two materials at a predetermined flow rate, and optimizing the mixing process; in addition, by checking the weight change and verifying the accuracy of the flow monitoring, a double protection effect is achieved; accurate mixing control of heterogeneous materials (such as water and oil) is achieved, and it is suitable for industrial applications that require precise control of the mixing ratio and mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a block diagram of a method for controlling heterogeneous mixing in an embodiment of the present invention;

[0038] Figure 2 Schematic diagram of the structure of a heterogeneous material mixing control system in an embodiment of the present invention.

[0039] In the figure, 11, the first pressure regulating device; 12, the first air inlet valve; 13, the first pressure sensor; 14, the first material tank; 15, the first bottom valve; 16, the first weighing meter; 17, the first flow monitoring device; 18, the first opening regulating device; 21, the second pressure regulating device; 22, the second air inlet valve; 23, the second pressure sensor; 24, the second material tank; 25, the second bottom valve; 26, the second weighing meter; 27, the second flow monitoring device; 28, the second opening regulating device; 31, the mixing material tank; 32, the feed valve; 33, the third weighing meter. DETAILED DESCRIPTION

[0040] The present invention will be described in more detail below in conjunction with the accompanying drawings, wherein preferred embodiments of the present invention are shown, and it should be understood that those skilled in the art may modify the present invention described herein and still achieve the beneficial effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation of the present invention.

[0041] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and are not in exact proportions, and are only used to facilitate and clearly assist in illustrating the purpose of the embodiments of the present invention.

[0042] The present invention provides a method for controlling the mixing of heterogeneous phases. Figure 1 ,include:

[0043] S1. Pressurizing the first mixture and the second mixture to a preset pressure, wherein the density of the first mixture is greater than that of the second mixture;

[0044] S2, the first mixture starts to flow, the opening of the first pipeline of the first mixture is adjusted to a first preset opening, and the first mixture fills the first pipeline and waits for a first flow time;

[0045] S3, the second mixture starts to flow, the opening of the second pipeline of the second mixture is adjusted to a second preset opening, and a second flow time is waited;

[0046] S4. Adjusting the pressures of the first mixture and the second mixture respectively to reach target flow rates.

[0047] In this embodiment, the pressure in the first mixture tank and the second mixture tank is used as a power source. After adjusting the pipeline opening to a preset opening, the pressure in the first mixture tank and the second mixture tank is adjusted to achieve the effect of fusing the two materials at a predetermined flow rate; first, the first mixture with a larger density is allowed to circulate, so that a bottom layer can be formed in the mixing container to lay a foundation for subsequent mixing, and the pipeline opening of the first mixture is adjusted to a first preset opening, and the first circulation time is waited to ensure that the first mixture fully fills the pipeline and flows stably; the second pipeline opening is adjusted to a second preset opening, the flow rate of the second mixture is controlled, and the second circulation time is waited to ensure that the second mixture can be fully contacted and mixed with the first mixture; this embodiment accurately controls the flow rate of the two mixtures by adjusting the pressure to achieve the best mixing ratio and effect, and adjusts the pressure in time according to the mixing effect to optimize the mixing process.

[0048] Specifically, in step S1, the density of the first mixture is greater than that of the second mixture. When the density difference between the two substances is large, the substance with higher density is passed first. The substance with higher density will form a layer at the bottom of the mixing container, while the substance with lower density will float on top, which can promote the mixing of the two substances.

[0049] In other specific examples, when the viscosity of the two substances is greatly different, the substance with lower viscosity is passed first, and the substance with lower viscosity is easier to flow and disperse, which helps to mix the subsequent substance with higher viscosity. When the compatibility of the two substances is greatly different, passing the substance with better compatibility first can help to disperse the subsequent substances.

[0050] In this embodiment, the first mixture is water and the second mixture is oil. When water and oil are mixed, the density of water is greater than that of oil, and water is polar while oil is non-polar. Water is relatively easier to flow and disperse, so the water with a higher density is allowed to flow first.

[0051] In step S2, the opening of the first pipeline of the first mixture is adjusted to a first preset opening, preferably, the first preset opening is 30% to 50%. The first preset opening can be 30%, 34%, 40%, 45% or 50%.

[0052] In step S2, after the first mixture fills the first pipeline, wait for 8s to 10s to ensure that the first mixture fully fills the pipeline and flows stably.

[0053] Furthermore, step S2 also includes: starting the shearing machine to prepare for mixing. In the process of water-oil mixing, the shearing machine is used to disperse the oil phase into the water phase in the form of fine droplets. In this embodiment, the shearing machine is started when the water phase fills the pipeline and a preset filling time has passed. The purpose of starting the shearing machine at this time is to ensure that the water phase has been flowing stably in the system, and before the oil phase is added, the shearing machine is ready to effectively disperse and mix the oil phase that is about to enter; the shearing action of the shearing machine helps to better disperse the oil phase in the water, thereby obtaining a more uniform mixing effect.

[0054] In step S3, the opening of the second pipeline of the second mixture is adjusted to a second preset opening, preferably, the second preset opening is 10% to 15%, and the second preset opening can be 10%, 11%, 12%, 13% or 15%.

[0055] In step S3, after adjusting the opening of the second pipe, the mixture is circulated for 3s to 5s, that is, the pressure of the first mixture and the second mixture is adjusted 3s to 5s after the second mixture begins to circulate.

[0056] Furthermore, in step S4, the process of respectively adjusting the pressures of the first mixture and the second mixture to achieve a preset flow rate includes: adjusting the pressure of the first mixture at intervals of a first preset time according to a flow deviation between the flow rate of the first mixture and a target flow rate.

[0057] Specifically, in step S4, when the flow rate deviation between the flow rate of the first mixture and the target flow rate is greater than 2 L / min or less than -2 L / min, the pressure of the first mixture is correspondingly reduced or increased by 0.05 bar.

[0058] When the flow rate deviation is between 0.5 L / min and 2 L / min or between -2 L / min and -0.5 L / min, the pressure of the first mixture is reduced or increased by 0.02 bar accordingly.

[0059] When the flow rate deviation is between 0.2 L / min and 0.5 L / min or between -0.5 L / min and -0.2 L / min, the pressure of the first mixture is reduced or increased by 0.01 bar accordingly.

[0060] The flow deviation is between -0.2L / min and 0.2L / min, maintaining the current pressure.

[0061] Furthermore, in step S4, the process of separately adjusting the pressures of the first mixture and the second mixture to achieve a preset flow rate also includes: adjusting the pressure of the second mixture at intervals of a first preset time according to a flow deviation between the flow rate of the second mixture and a target flow rate.

[0062] Specifically, in step S4, when the flow rate deviation between the flow rate of the second mixture and the target flow rate is greater than 50 ml / min or less than -50 ml / min, the pressure of the second mixture is correspondingly reduced or increased by 0.05 bar.

[0063] When the flow rate deviation is between 20 ml / min and 50 ml / min or between -50 ml / min and -20 ml / min, the pressure of the second mixture is reduced or increased by 0.02 bar accordingly.

[0064] When the flow rate deviation is between 5 ml / min and 20 ml / min or between -20 ml / min and -5 ml / min, the pressure of the second mixture is reduced or increased by 0.01 bar accordingly.

[0065] When the flow deviation is between -5ml / min and 5ml / min, maintain the current pressure.

[0066] In this embodiment, the pressure inside the tank of the first mixture and the second mixture is used as the power source. After the pipeline opening is adjusted to a preset opening, the first mixture begins to flow. After the first mixture fills the pipeline, it is ready to be mixed, and then the second mixture begins to flow. After the second mixture flows for 3 to 5 seconds, the pressure inside the first mixture and second mixture tanks is adjusted to achieve the effect of merging the two materials at a predetermined flow rate.

[0067] Furthermore, step S4 further includes step S5:

[0068] S51, after the flow rate regulation is stable, recording the remaining weight of the first mixture and the second mixture respectively at a second preset time interval;

[0069] S52, calculating the real-time flow rate according to the difference between the remaining weight and the original weight, and updating the detected flow rate according to the calculated real-time flow rate.

[0070] In a specific example, if the normal difference of the oil phase is 190g, but the actual weight is reduced by 184g, this means that the flow rate displayed by the flowmeter is too large. At this time, the adjusted flow value will be automatically changed to 384ml / min, and the calculation and comparison will be carried out every 30 seconds to prevent the detected flow rate from being inaccurate, which will cause the quality of the drugs to be unqualified.

[0071] In this embodiment, the second preset time is greater than the first preset time; preferably, the first preset time is 5s to 10s, and the second preset time is 30s to 50s.

[0072] In other specific examples, the first scheduled time and the second scheduled time may be appropriately adjusted according to actual needs.

[0073] Furthermore, step S5 further includes step S6: when the weight change of the second mixture is less than a threshold value, it is determined that the delivery of the second mixture is completed and the mixing is stopped.

[0074] In a specific example, when the weight change of the oil phase is less than 1 kg, the time is automatically delayed for 30 seconds, and the oil phase delivery is judged to be completed, the oil-water phase mixing step is immediately stopped, the shearing machine is turned off, and then the next step is entered.

[0075] Step S6 is followed by step S7: closing all valves, and the whole process ends.

[0076] In this embodiment, the pressure in the first mixture tank and the second mixture tank is used as the power source. After the pipeline opening is adjusted to a preset opening, the pressure in the first mixture tank and the second mixture tank is adjusted to achieve the best mixing ratio and effect, thereby achieving the effect of merging the two materials at a predetermined flow rate and optimizing the mixing process. In addition, the accuracy of flow monitoring is verified through weight changes to achieve a double protection effect.

[0077] Embodiment 2

[0078] This embodiment provides a heterogeneous material mixing control system for implementing the heterogeneous material mixing control method described in the first embodiment. Figure 2 , including a first pressure regulating device 11, a first material tank 14, a first pipeline, a first flow monitoring device 17, a first opening regulating device 18, a second pressure regulating device 21, a second material tank 24, a second pipeline, a second flow monitoring device 27, a second opening regulating device 28 and a mixing device.

[0079] The first pipeline and the second pipeline are connected to the mixing device respectively; the first pressure regulating device 11 and the second pressure regulating device 21 are used to adjust the pressure of the first material tank 14 and the second material tank 24 respectively; the first opening regulating device 18 and the first flow monitoring device 17 are connected to the discharge port of the first material tank 14, and the first opening regulating device 18 is close to the mixing device; the second opening regulating device 28 and the second flow monitoring device 27 are connected to the discharge port of the second material tank 24, and the second opening regulating device 28 is close to the mixing device.

[0080] Furthermore, it also includes a first air intake valve 12, a second air intake valve 22, a first bottom valve 15 and a second bottom valve 25; the first air intake valve 12 and the second air intake valve 22 are respectively connected to the input ends of the first material tank 14 and the second material tank 24, and the first bottom valve 15 and the second bottom valve 25 are respectively connected to the output ends of the first material tank 14 and the second material tank 24.

[0081] Specifically, the mixing device includes a shearing machine, a mixing material tank 31 and a feed valve 32 , the input end of the shearing machine is connected to the output ends of the first pipeline and the second pipeline, and the feed valve 32 is connected between the output end of the shearing machine and the mixing material tank 31 .

[0082] Optionally, a pressure sensor is further included, and the pressure sensor includes a first pressure sensor 13 and a second pressure sensor 23, which are used to detect the pressure of the first material tank 14 and the second material tank 24 respectively.

[0083] Optionally, a first weighing scale 16 , a second weighing scale 26 and a third weighing scale 33 are further included, which are used to weigh the first material tank 14 , the second material tank 24 and the mixed material tank 31 , respectively.

[0084] In this embodiment, the first pressure regulating device 11 and the second pressure regulating device 21 are used to adjust the pressure of the first material tank 14 and the second material tank 24 to ensure that the materials can flow to the mixing device through the pipelines at appropriate pressures.

[0085] The first material tank 14 and the second material tank 24 are used to store the first mixture and the second mixture. In this embodiment, the first mixture and the second mixture are water and oil, respectively.

[0086] The first pipeline and the second pipeline connect the material tank and the mixing device for conveying materials. The first flow monitoring device 17 and the second flow monitoring device 27 are used to monitor and control the material flow through the first pipeline and the second pipeline. The first opening regulating device 18 and the second opening regulating device 28 are used to adjust the opening of the pipeline valve to control the flow. The mixing device is used to achieve material mixing and emulsification. The first air inlet valve 12 and the second air inlet valve 22 are used to control the gas entering the material tank to adjust the pressure in the tank. The first bottom valve 15 and the second bottom valve 25 are used to control the flow of materials from the material tank. The pressure sensor is used to detect the pressure of the material tank. The first weighing meter 16, the second weighing meter 26 and the third weighing meter 33 are used to weigh the weight of the material in the material tank so as to calculate the real-time flow and provide feedback.

[0087] In this embodiment, the operation flow of the system is as follows:

[0088] The first material tank 14 and the second material tank 24 are pressurized to a preset pressure through the first air intake valve 12 and the second air intake valve 22 by using the first pressure regulating device 11 and the second pressure regulating device 21 respectively.

[0089] Open the first bottom valve 15 and the feed valve 32, and adjust the opening of the first pipeline through the first opening adjustment device 18 to allow the first mixture (water) to flow and fill the pipeline, then wait for a preset circulation time and start the shearing machine.

[0090] The second bottom valve 25 is opened, and the opening of the second pipeline is adjusted by the second opening adjustment device 28 to allow the second mixture (oil) to circulate, and wait for a preset circulation time.

[0091] The first flow monitoring device 17 and the second flow monitoring device 27 monitor the flow rates of the two materials respectively.

[0092] The pressure in the tank is adjusted by the first pressure regulating device 11 and the second pressure regulating device 21 to achieve the effect of merging the two materials at a specified flow rate.

[0093] The first weighing meter 16, the second weighing meter 26 and the third weighing meter 33 respectively monitor the weight of the material in the material tank and determine the accuracy of the flow meter.

[0094] In summary, the precise mixing control of heterogeneous substances (such as water and oil) can be achieved, which is suitable for industrial applications that require precise control of the mixing ratio and mixing effect.

[0095] In summary, the heterogeneous material mixing control method and system provided by the present invention uses the pressure in the first mixture tank and the second mixture tank as the power source, adjusts the pipeline opening to a preset opening, first circulates the first mixture, and starts mixing after the first mixture fills the pipeline, and then circulates the second mixture, and adjusts the pressure in the first mixture tank and the second mixture tank to achieve the best mixing ratio and effect, realize the effect of merging the two materials at a predetermined flow rate, and optimize the mixing process; by checking the weight change and verifying the accuracy of the flow monitoring, double calibration is performed; in addition, through pipeline control, the pulse of material transportation is reduced, and the system provided by the present invention is easier to clean and sterilize.

[0096] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for controlling mixing of heterogeneous materials, characterized in that: include: Pressurizing the first mixture and the second mixture to a preset pressure, wherein the density of the first mixture is greater than that of the second mixture; The first mixture starts to flow, the opening of the first pipeline of the first mixture is adjusted to a first preset opening, and the first flow time is waited after the first pipeline is filled with the first mixture; The second mixture starts to flow, the opening of the second pipeline of the second mixture is adjusted to a second preset opening, and a second flow time is waited; The pressures of the first mixture and the second mixture are adjusted respectively to achieve target flow rates.

2. The method for controlling heterogeneous mixing according to claim 1, characterized in that: The process of respectively adjusting the pressures of the first mixture and the second mixture to achieve a preset flow rate includes: adjusting the pressure of the first mixture at intervals of a first preset time according to a first flow rate deviation between the flow rate of the first mixture and a target flow rate.

3. The heterogeneous material mixing control method according to claim 2, characterized in that: When the first flow rate deviation is greater than 2 L / min, reducing the pressure of the first mixture by 0.05 bar; When the first flow rate deviation is between 0.5 L / min and 2 L / min, reducing the pressure of the first mixture by 0.02 bar; When the first flow rate deviation is between 0.2 L / min and 0.5 L / min, reducing the pressure of the first mixture by 0.01 bar; When the first flow deviation is between -0.2 L / min and 0.2 L / min, maintaining the current pressure; When the first flow rate deviation is less than -2 L / min, increasing the pressure of the first mixture by 0.05 bar; When the first flow rate deviation is between -2 L / min and -0.5 L / min, increasing the pressure of the first mixture by 0.02 bar; When the flow rate deviation is between -0.5 L / min and -0.2 L / min, the pressure of the first mixture is increased by 0.01 bar.

4. The heterogeneous material mixing control method according to claim 2, characterized in that: The process of separately adjusting the pressures of the first mixture and the second mixture to achieve a preset flow rate also includes: adjusting the pressure of the second mixture at intervals of a first preset time according to a second flow rate deviation between the flow rate of the second mixture and a target flow rate.

5. The method for controlling heterogeneous mixing according to claim 4, characterized in that: When the second flow rate deviation is greater than 50 ml / min, reducing the pressure of the second mixture by 0.05 bar; When the second flow rate deviation is between 20 ml / min and 50 ml / min, reducing the pressure of the second mixture by 0.02 bar; When the second flow rate deviation is between 5 ml / min and 20 ml / min, reducing the pressure of the second mixture by 0.01 bar; When the second flow rate deviation is between -5 ml / min and 5 ml / min, maintaining the current pressure; When the second flow rate deviation is less than -50 ml / min, increasing the pressure of the second mixture by 0.05 bar; When the second flow rate deviation is between -50 ml / min and -20 ml / min, increasing the pressure of the second mixture by 0.02 bar; When the second flow rate deviation is between -20 ml / min and -5 ml / min, the pressure of the second mixture is increased by 0.01 bar.

6. The method for controlling heterogeneous mixing according to claim 1, characterized in that: The process of respectively adjusting the pressures of the first mixture and the second mixture to reach the target flow rates respectively further comprises the steps of: After the flow rate regulation is stable, the remaining weight of the first mixture and the second mixture are recorded respectively at a second preset time interval; The real-time flow rate is calculated based on the difference between the remaining weight and the original weight, and the detected flow rate is updated based on the calculated real-time flow rate.

7. The method for controlling heterogeneous mixing according to claim 6, wherein: Also includes: When the weight change of the second mixture is less than a threshold value, it is determined that the delivery of the second mixture is completed and the mixing is stopped.

8. A heterogeneous material mixing control system, used to implement the heterogeneous material mixing control method according to any one of claims 1 to 7, characterized in that: It includes a first pressure regulating device, a first material tank, a first pipeline, a first flow monitoring device, a first opening regulating device, a second pressure regulating device, a second material tank, a second pipeline, a second flow monitoring device, a second opening regulating device and a mixing device; The first pipeline and the second pipeline are connected to the mixing device respectively; the first pressure regulating device and the second pressure regulating device are used to adjust the pressure of the first material tank and the second material tank respectively; the first opening regulating device and the first flow monitoring device are connected to the discharge port of the first material tank, and the first opening regulating device is close to the mixing device; the second opening regulating device and the second flow monitoring device are connected to the discharge port of the second material tank, and the second opening regulating device is close to the mixing device.

9. The heterogeneous mixing control system according to claim 8, characterized in that: It also includes a first air intake valve, a second air intake valve, a first bottom valve and a second bottom valve; the first air intake valve and the second air intake valve are respectively connected to the input ends of the first material tank and the second material tank, and the first bottom valve and the second bottom valve are respectively connected to the output ends of the first material tank and the second material tank.

10. The heterogeneous material mixing control system according to claim 8, characterized in that: The mixing device comprises a shearing machine, a mixing material tank and a feed valve. The input end of the shearing machine is connected to the output ends of the first pipeline and the second pipeline, and the feed valve is connected between the output end of the shearing machine and the mixing material tank.

11. The heterogeneous material mixing control system according to claim 10, characterized in that: It also includes a first weighing scale, a second weighing scale and a third weighing scale for weighing the first material tank, the second material tank and the mixed material tank respectively.

12. The heterogeneous material mixing control system according to claim 8, characterized in that: A pressure sensor is also included, and the pressure sensor is used to detect the pressure of the first material tank and the second material tank respectively.

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