A production line for detecting the concentration of soybean products

Abstract

This utility model provides a soybean product concentration detection production line, relating to the field of soybean product production technology. It includes: a level collector and a concentration collector installed in a soybean product slurry container within the production line; a slurry extraction solenoid valve installed in the slurry extraction pipe of the soybean product slurry container; a slurry extraction self-priming pump installed in the slurry extraction pipe of the soybean product slurry container; an electromagnetic proportional valve installed in the water inlet pipe of the soybean product slurry container; and a main controller electrically connected to the level collector, concentration collector, slurry extraction solenoid valve, electromagnetic proportional valve, and slurry extraction self-priming pump. The advantages include online real-time, high-precision concentration and level monitoring via the concentration collector and level collector, and control of the opening and closing of the electromagnetic proportional valve and the slurry extraction solenoid valve / slurry extraction self-priming pump by the main controller. This eliminates the problem of significant subjective errors caused by the cumbersome operation of manual sampling, concentration testing based on experience / simple tools, and repeated manual valve adjustments.

Description

Technical Field

[0001] This utility model relates to the field of soybean product production technology, and in particular to a soybean product concentration detection production line. Background Technology

[0002] Traditional soybean product production relies heavily on manual labor in the pulping process, especially in the crucial step of pulp concentration detection and adjustment. First, workers manually start the grinding motor and simultaneously adjust the opening of the soybean feed valve and water valve to control the proportion of raw materials entering the grinder. This process primarily relies on the worker's experience to judge the initial mixture's condition. Precise control of pulp concentration is the core of pulping, and this is entirely done manually: 1. Concentration Detection: After grinding (or during grinding), workers manually extract pulp samples from the grinder or storage container. They typically use simple tools (such as beakers or Baumé meters) or rely solely on visual observation (such as the pulp's viscosity and adhesion to the walls) to manually determine if the current pulp concentration meets the standard. 2. Concentration Adjustment: Based on the detection results, if the concentration is too high, workers need to manually open the water valve to add water for dilution; if the concentration is too low, it may be necessary to manually adjust the soybean feed valve to increase the raw material input or decrease the water addition. The entire process of "detection-judgment-manual valve adjustment" often needs to be repeated several times to achieve the target concentration. This method of controlling slurry concentration solely through manual sampling, experience-based judgment, and manual valve operation inevitably leads to significant problems: the operation process is cumbersome and time-consuming, requiring workers to frequently travel between the sampling point and the valve; the concentration test results are affected by personal experience, eyesight, sample representativeness, and the accuracy of simple tools, resulting in large and unstable errors; and the lag in slurry concentration adjustment leads to differences in the basic concentration of slurry between different batches, directly affecting the stability of subsequent coagulation processes and the consistency of the final product (such as firm tofu and soft tofu). Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a soybean product concentration detection production line, comprising:

[0004] The level collector and concentration collector are installed in the soybean slurry container in the soybean product concentration detection production line.

[0005] A solenoid valve for pumping slurry is installed in the pumping pipe of the soy product slurry container;

[0006] A self-priming pump is installed in the pumping pipe of the soybean product slurry container;

[0007] An electromagnetic proportional valve is installed in the water inlet pipe of the soybean product slurry container;

[0008] The main controller is electrically connected to the liquid level collector, the concentration collector, the slurry pumping solenoid valve, the electromagnetic proportional valve, and the slurry pumping self-priming pump, respectively.

[0009] Preferably, the soybean product slurry container is also provided with an internal circulation pipe, and the internal circulation pipe is also provided with an internal circulation self-priming pump.

[0010] Preferably, the internal circulation pipeline is equipped with a circulation solenoid valve, which is electrically connected to the main controller.

[0011] Preferably, it also includes a human-computer interaction interface, which is electrically connected to the main controller.

[0012] Preferably, it also includes a power supply, which is connected in parallel to the liquid level collector, the concentration collector, the slurry pumping solenoid valve, the electromagnetic proportional valve, and the slurry pumping self-priming pump.

[0013] Preferably, an emergency stop switch is provided on the main circuit of the power supply.

[0014] Preferably, a power indicator light is provided on the main circuit of the power supply.

[0015] The above technical solution has the following advantages or beneficial effects:

[0016] Concentration and level monitoring are achieved through concentration and level acquisition devices, eliminating the need for manual level monitoring and manual sampling of slurry for concentration testing. The main controller enables one-stop monitoring and control of the opening and closing of the electromagnetic proportional valve and the slurry pumping solenoid valve / self-priming pump. This eliminates the need for workers to frequently travel between valves, pumps, and slurry container sampling points, allowing for timely adjustment of slurry concentration. It also eliminates the cumbersome operation and significant subjective error problems caused by manual sampling, concentration testing based on experience / simple tools, and repeated manual valve adjustments required in the previous technology, and ensures timely adjustment of slurry concentration. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the circuit structure in a soybean product concentration detection production line, which is a preferred embodiment of the present invention. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The present invention is not limited to this embodiment; other embodiments that conform to the spirit of the present invention may also fall within its scope.

[0019] In a preferred embodiment of this utility model, based on the aforementioned problems existing in the prior art, this utility model now provides a production line for detecting the concentration of soybean products, such as... Figure 1 As shown, it includes:

[0020] Level collector 2 and concentration collector 1 are installed in the soybean product slurry container in the soybean product concentration detection production line;

[0021] The solenoid valve 3 is installed in the pumping pipe of the soy product slurry container;

[0022] A self-priming pump 4 is installed in the pumping pipe of the soybean product slurry container;

[0023] An electromagnetic proportional valve 6 is installed in the water inlet pipe of the soybean product slurry container;

[0024] The main controller 5 is electrically connected to the liquid level collector 2, the concentration collector 1, the slurry pumping solenoid valve 3, the electromagnetic proportional valve 6, and the slurry pumping self-priming pump 4, respectively.

[0025] Specifically, in order to solve the problems mentioned in the background art, such as the traditional soybean product pulping process relying entirely on manual operation, especially the cumbersome operation, large error, delayed adjustment, and inconsistent batch quality in pulp concentration detection and adjustment, this utility model provides a soybean product concentration detection production line, which is particularly suitable for one-stop control of the pulping process.

[0026] like Figure 1 As shown, the soybean product concentration detection production line of this embodiment mainly includes the following components:

[0027] Signal acquisition unit:

[0028] Liquid level sensor 1: Installed in the soybean product slurry container (such as a grinder or storage tank), it is used for real-time online monitoring of the slurry level. This liquid level sensor preferably uses a silicon piezoresistive pressure sensor as its core detection module. Its working principle is as follows: the Wheatstone bridge formed by the silicon piezoresistive sensor converts the pressure signal generated by the slurry level into a resistance signal, then into a voltage signal. After processing by the built-in analog-to-digital converter, microcontroller, and digital-to-analog converter, a standard 4-20mA two-wire current signal is output to the main controller 5. This liquid level sensor typically has a segment display screen that can display the current liquid level value online.

[0029] Concentration collector 2: Installed in the soybean product slurry container, it is used for real-time online monitoring of the slurry concentration. This concentration collector preferably uses a photoelectric sensor as its core detection module. Its working principle is based on calibration according to the correspondence between solution concentration and light refractive index, and an internal temperature sensor is integrated for temperature compensation. The concentration and temperature values ​​are directly transmitted to the main controller 5 via RS485 digital communication. This concentration collector typically includes a digital display screen to show the current concentration value online.

[0030] Execution unit:

[0031] Slurry extraction solenoid valve 3: Installed in the slurry extraction pipe of the soybean product slurry container, used to control the opening and closing of the slurry extraction pipe. It is controlled to open or close by the main controller 5.

[0032] Self-priming pump 4: Located in the slurry extraction pipe of the soybean product slurry container, downstream of the slurry extraction solenoid valve 3. It is started or stopped by the main controller 5 and is responsible for extracting the proportioned slurry from the container and transporting it to the next process.

[0033] Electromagnetic proportional valve 6: Installed in the water inlet pipe of the soybean product slurry container. It is controlled by the analog signal output from the main controller 5. The opening and closing degree of the electromagnetic valve is more accurate than that of manually turning the valve, and it can precisely regulate the flow rate of clean water in the water inlet pipe. The water inlet pipe is also equipped with a self-priming water pump 7, which is controlled by the analog signal output from the main controller 5 to start and stop water intake.

[0034] Control unit:

[0035] Main Controller 5: As the core of the entire system, a conventional micro programmable controller is preferred. Main Controller 5 is electrically connected via its input ports to receive 4-20mA analog signals from Level Acquisition Unit 1 and digital signals from Concentration Acquisition Unit 2 via RS485, acquiring the slurry level and concentration values ​​in real time. Main Controller 5 is electrically connected via its output ports to the pumping solenoid valve 3, the self-priming pump 4, and the electromagnetic proportional valve 6, controlling their operational status.

[0036] Human-Computer Interaction Unit:

[0037] In a preferred embodiment of the present invention, a human-computer interaction interface 9 is further included, which is electrically connected to the main controller 5.

[0038] A conventional IoT human-machine interface resistive touchscreen can be used, which communicates with the main controller 5 through program design. This interface provides functions such as a main interface, data monitoring interface, manual debugging interface, and parameter setting interface, making it convenient for operators to monitor the system status, set process parameters, and perform necessary manual interventions.

[0039] Working principle and process of solving technical problems:

[0040] The working process of the production line in this embodiment, especially the concentration control in the pulping stage, is as follows:

[0041] Real-time signal sensing: During the pulping process, the concentration acquisition device 2 continuously and in real-time monitors the concentration value of the slurry in the soybean product slurry container and transmits the high-precision concentration data to the main controller 5 via RS485 digital communication. Simultaneously, the level acquisition device 1 continuously and in real-time monitors the slurry level in the container and transmits an analog signal to the main controller 5. This completely replaces the tedious and error-prone process in the prior art, which required workers to manually extract samples and judge the concentration based on experience or simple tools.

[0042] The main controller 5 provides one-stop monitoring and control of the opening and closing of the electromagnetic proportional valve and the slurry pump solenoid valve / slurry self-priming pump. It eliminates the need for workers to frequently travel between sampling and monitoring points of valves, pumps, and slurry containers. Workers can observe the collected liquid level and concentration through the main controller 5 and then control the opening and closing of the electromagnetic proportional valve and the slurry pump solenoid valve / slurry self-priming pump as needed. This enables timely adjustment of slurry concentration and eliminates the cumbersome operation and large subjective error caused by the need for workers to manually sample, test concentration based on experience / simple tools, and manually and repeatedly adjust valves in the background technology. This also ensures the timeliness of slurry concentration adjustment.

[0043] Furthermore, the main controller 5 continuously receives signals from the concentration collector 2 and the level collector 1. The main controller 5 compares the received real-time concentration value with the target concentration range pre-set on the human-machine interface. The main controller 5 can be equipped with simple comparison programs to execute pre-set control actions for valves, pumps, and other equipment based on the comparison results. The comparison process uses industry-standard numerical comparison methods, such as comparing the level value collected by the concentration collector 2 with a pre-stored level threshold to determine which is larger. If the level value is larger, action A is executed; if the level threshold is larger, action B is executed.

[0044] Specifically, if the detected concentration value is higher than the upper limit of the set range, it indicates that the slurry is too concentrated. The main controller 5 then sends a control signal to the electromagnetic proportional valve 6 to increase its opening, thereby increasing the water inflow and diluting the slurry.

[0045] If the detected concentration value is lower than the lower limit of the set range, it indicates that the slurry is too thin. The main controller 5 then sends a control signal to the electromagnetic proportional valve 6 to reduce its opening, thereby reducing the water inflow and relatively increasing the slurry concentration.

[0046] The main controller 5 can control and adjust the opening of the electromagnetic proportional valve 6 in real time through a simple, industry-standard program, so that the slurry concentration can be quickly and accurately stabilized within the set target range. This solves the problems of slow manual adjustment, large errors based on experience, and cumbersome repeated operations in the background technology, ensuring the accuracy and consistency of concentration control.

[0047] Similarly, the aforementioned numerical comparison method can also be used for liquid level control and pumping: the main controller 5 compares the received real-time liquid level height with the preset target liquid level high and low limits.

[0048] When the liquid level is higher than the set upper limit, the main controller 5 first controls the slurry pumping solenoid valve 3 to open, and then controls the slurry pumping self-priming pump 4 to start and perform the slurry extraction operation.

[0049] When the liquid level falls below the set lower limit, the main controller 5 stops the self-priming pump 4 and then closes the pumping solenoid valve 3, stopping the pumping operation. This allows for the start and stop of the pumping operation, avoiding the burden of manual monitoring of the liquid level and potential errors.

[0050] In a preferred embodiment of the present invention, an internal circulation pipe is provided on the soybean product slurry container, and an internal circulation self-priming pump is provided inside the internal circulation pipe.

[0051] In a preferred embodiment of this utility model, a circulation solenoid valve 8 is provided in the internal circulation pipeline and is electrically connected to the main controller 5.

[0052] Specifically, workers can use the main controller 5 to control the internal circulation self-priming pump and the circulation solenoid valve 8 to perform internal circulation operation, circulating and mixing the slurry in the container to ensure uniform concentration distribution. This helps to obtain a more uniform slurry quality.

[0053] Human-machine interaction and monitoring: Operators can view concentration values, liquid level values, equipment status, set process parameters, and view alarm information in real time through the human-machine interface.

[0054] The technical effects include:

[0055] The soybean product concentration detection production line provided in this embodiment integrates a liquid level collector 1, a concentration collector 2, a main controller 5, an electromagnetic proportional valve 6, a slurry pumping solenoid valve 3, and a slurry pumping self-priming pump 4, to achieve online real-time monitoring and opening / closing control of key process parameters such as concentration and liquid level in the slurry preparation process.

[0056] Completely replaces manual concentration detection and valve adjustment: Overcomes the shortcomings of the prior art, such as large errors, strong subjectivity, and tedious repetitive operation, in manual concentration detection. The opening and closing accuracy of the electromagnetic proportional valve 6 is more accurate than that of manually rotating valves, realizing continuous and precise adjustment of the influent flow rate.

[0057] Precise and stable concentration control: The main controller adjusts the influent water based on real-time concentration, ensuring the slurry concentration remains stable within the preset optimal range, significantly improving the consistency of basic slurry quality across different batches. It can also start and stop the slurry pump and valves based on real-time liquid level signals, reducing worker workload and improving operational reliability. This reduces human intervention, shortens concentration adjustment time, improves production efficiency, and fundamentally solves the problem of quality fluctuations caused by differences in human operation.

[0058] Reduce labor intensity: Workers are freed from frequent manual labor such as testing, sampling, and valve adjustment, and are mainly responsible for monitoring and setting parameters.

[0059] In summary, the present invention effectively solves the core problems in the traditional soybean product pulping process mentioned in the background art, such as cumbersome operation, large monitoring concentration error, poor process control precision, and unstable product quality.

[0060] In a preferred embodiment of this utility model, a power supply is further included, which is connected in parallel to the liquid level collector, the concentration collector, the slurry pumping solenoid valve, the electromagnetic proportional valve, and the slurry pumping self-priming pump.

[0061] In a preferred embodiment of this invention, an emergency stop switch is provided on the main circuit of the power supply.

[0062] In a preferred embodiment of this utility model, a power indicator light is provided on the main circuit of the power supply.

[0063] Specifically, such as Figure 1 As shown, in this embodiment, the 220V power supply provides operating power to the entire system. The output terminal of the power supply is connected in parallel with the liquid level collector 1, the concentration collector 2, the slurry pumping solenoid valve 3, the electromagnetic proportional valve 6, the slurry pumping self-priming pump 4, and the main controller 5 (which also typically requires power). The entire circuit also includes fuses, leakage protection switches, contactors, relays, air switch sockets, etc., whose functions are standard in their application and will not be elaborated here.

[0064] The main controller also includes a voltage conversion module that provides a 24V operating voltage for electrical connection to the aforementioned valves, sensors, pumps, and various other devices.

[0065] Emergency stop switch: Located on the main circuit of the power supply. Its function is to allow operators to quickly press the switch in case of emergency (such as equipment malfunction or personnel safety risks) to immediately cut off the main power supply to the entire system, forcing all powered equipment (sensors, controllers, actuators) to stop working, ensuring equipment and personnel safety, and complying with safety regulations.

[0066] Power indicator light: Located on the main circuit of the power supply (usually after the emergency stop switch). Its function is to illuminate when the main circuit is energized and the emergency stop switch is not triggered, visually indicating that the main power supply of the entire system is on, facilitating operators and maintenance personnel to quickly confirm the power supply status of the system and perform fault diagnosis or safe operation.

[0067] The beneficial effects of parallel connection and main circuit design:

[0068] Independence and Reliability: All electrical equipment (level sensor 1, concentration sensor 2, slurry pumping solenoid valve 3, electromagnetic proportional valve 6, slurry pumping self-priming pump 4, main controller 5, etc.) are connected in parallel to the output of the power supply. This connection method means that if any electrical equipment or its branch experiences a short circuit, overload, or other fault, it will usually only cause the protection device (such as a fuse or circuit breaker) of that equipment's branch to trip and cut off the power, without affecting the normal operation of the main circuit and other parallel equipment. This significantly improves the overall reliability and stability of the system, avoiding the problem of power outages and production shutdowns caused by the failure of a single piece of equipment.

[0069] Core Safety Feature (Emergency Stop Switch): The emergency stop switch is located on the main power supply circuit, connected in series before all parallel branches. This design ensures that in an emergency, operating the emergency stop switch can directly and thoroughly cut off the main power supply to the system. Regardless of the state of any branch equipment, it can be forcibly de-energized, providing the highest level of safety for emergency shutdown.

[0070] Clear status indication (power indicator): The power indicator is directly connected to the main circuit, and its on / off state directly reflects whether the main circuit is powered on (and the emergency stop button has not been pressed). This provides operators and maintenance personnel with the most basic and clear indication of the system power supply status, serving as the first step in equipment operation, maintenance, and fault diagnosis.

[0071] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made using the content of this specification and illustrations should be included within the protection scope of the present utility model.

Claims

1. A production line for detecting the concentration of soybean products, characterized in that, include: The level collector and concentration collector are installed in the soybean slurry container in the soybean product concentration detection production line. A solenoid valve for pumping slurry is installed in the pumping pipe of the soy product slurry container; A self-priming pump is installed in the pumping pipe of the soybean product slurry container; An electromagnetic proportional valve is installed in the water inlet pipe of the soybean product slurry container; The main controller is electrically connected to the liquid level collector, the concentration collector, the slurry pumping solenoid valve, the electromagnetic proportional valve, and the slurry pumping self-priming pump, respectively.

2. The soybean product concentration detection production line according to claim 1, characterized in that, The soybean product slurry container is also equipped with an internal circulation pipe, and an internal circulation self-priming pump is installed inside the internal circulation pipe.

3. The soybean product concentration detection production line according to claim 2, characterized in that, The internal circulation pipeline is equipped with a circulation solenoid valve, which is electrically connected to the main controller.

4. The soybean product concentration detection production line according to claim 1, characterized in that, It also includes a human-computer interaction interface, which is electrically connected to the main controller.

5. The soybean product concentration detection production line according to claim 1, characterized in that, It also includes a power supply, which is connected in parallel to the liquid level collector, the concentration collector, the slurry pumping solenoid valve, the electromagnetic proportional valve, and the slurry pumping self-priming pump.

6. The soybean product concentration detection production line according to claim 5, characterized in that, An emergency stop switch is provided on the main circuit of the power supply.

7. The soybean product concentration detection production line according to claim 5, characterized in that, The main circuit of the power supply is equipped with a power indicator light.

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