Temperature adjusting method in flour grinding process

Abstract

The invention relates to the field of temperature regulation, in particular to a temperature regulation method in a flour grinding process. The method comprises the following steps: monitoring and recording temperature in real time, and calculating a comprehensive adjustment parameter by using a comprehensive adjustment parameter calculation algorithm; and based on the comprehensive adjustment parameters, the adjusted grinding speed is calculated through a grinding speed dynamic adjustment algorithm, and the adjusted grinding pressure is calculated through a grinding pressure dynamic adjustment algorithm. The problems that a traditional temperature adjusting system usually only depends on temperature deviation for control, and influences of the temperature change rate and the temperature acceleration on the temperature adjusting process are neglected are solved; when the temperature changes violently, quick response cannot be achieved or excessive response is triggered; and the technical problems that the safe operation range of the grinding equipment is not fully considered, so that the equipment is possibly operated under extreme conditions, and the equipment loss is increased or the equipment is damaged are solved.

Description

Technical Field

[0001] The invention relates to the field of temperature regulation, and in particular to a temperature regulation method in a flour grinding process. Background Art

[0002] In the food industry, flour is widely used in the production of various foods, such as bread, pastries, and instant noodles, due to its unique viscosity, plasticity, water absorption and good taste. The grinding process is an extremely critical step in the flour production process, which directly affects the quality and characteristics of the final product. During the grinding process, mechanical energy is converted into thermal energy, resulting in an increase in the grinding temperature. The change in temperature has a significant effect on the physical and chemical properties of flour. Improper temperature control can easily lead to denaturation of protein in flour, causing gelatinization of some starch, weakening of product flavor or producing unpleasant odors. How to effectively control the temperature during the grinding process and reduce the adverse effects of heat on the properties of flour has become an urgent problem to be solved in the flour grinding process.

[0003] The temperature regulation method of the flour grinding process can realize real-time monitoring and regulation of the temperature of the grinding process. By optimizing the grinding process parameters, the temperature of the grinding process can be effectively controlled, the quality and production efficiency of flour can be improved, and strong technical support can be provided for the production and application of flour.

[0004] However, traditional temperature control systems usually only rely on temperature deviation for control, ignoring the impact of temperature change rate and temperature acceleration on the temperature control process, which often leads to untimely adjustment, overreaction or instability, resulting in a lack of precision in temperature control and fluctuations in processing quality. At the same time, when the temperature changes drastically, it is unable to respond quickly or triggers an over-response, resulting in delayed or unstable temperature control, affecting the grinding quality and equipment safety, and even causing damage to the equipment. There is also the problem of not fully considering the safe operating range of the grinding equipment, resulting in the equipment operating under extreme conditions, increasing equipment losses or causing equipment damage. Summary of the invention

[0005] The invention provides a temperature regulation method for a flour grinding process, so as to solve the problems that a traditional temperature regulation system usually only relies on temperature deviation for control, ignores the influence of temperature change rate and temperature acceleration on the temperature regulation process, often leads to untimely regulation, overreaction or instability, so that the temperature regulation lacks precision and causes processing quality fluctuations; when the temperature changes drastically, it is unable to respond quickly or induces over-response, resulting in delayed or unstable temperature regulation, affecting the grinding quality and equipment safety, and even causing damage to the equipment; and the technical problems that the safe operating range of the grinding equipment is not fully considered, which may cause the equipment to operate under extreme conditions, increase equipment loss or cause equipment damage.

[0006] A method for regulating temperature in a flour grinding process comprises the following steps: S1: monitor and record the temperature in real time, and use the comprehensive adjustment parameter calculation algorithm to calculate the comprehensive adjustment parameter; the specific calculation formula of the comprehensive adjustment parameter calculation algorithm is:

[0007] in, represents comprehensive adjustment parameters; Indicates at time The temperature deviation is calculated by With target temperature The difference between , reflects the degree to which the current temperature deviates from the target temperature; Indicates at time The rate of temperature change; Indicates at time Temperature acceleration; S2: Based on the comprehensive adjustment parameters, the adjusted grinding speed is calculated using the grinding speed dynamic adjustment algorithm, and the adjusted grinding pressure is calculated using the grinding pressure dynamic adjustment algorithm; The specific calculation formula of the adjusted grinding speed is:

[0008] in, is the adjusted grinding speed, indicating the time The speed of the grinding equipment; Indicates the current grinding speed; Represents the base of the natural logarithm, used for exponential decay; Indicates the weight factor for adjusting the grinding speed; The specific calculation formula for the adjusted grinding pressure is:

[0009] in, is the adjusted grinding pressure, expressed in time Grinding pressure; Indicates the current grinding pressure; Indicates the grinding pressure adjustment coefficient; Indicates the temperature deviation adjustment factor; Represents the power exponent coefficient.

[0010] Preferably, the S2 specifically includes: The operating threshold of the grinding speed is set according to the performance of the grinding equipment, and the grinding speed is controlled by comparing the adjusted grinding speed with the operating threshold of the grinding speed so that the adjusted grinding speed is within the operating range allowed by the equipment.

[0011] Preferably, the S2 specifically includes: The operating threshold of the grinding pressure is set according to the performance of the grinding equipment, and the grinding pressure is controlled by comparing the adjusted grinding pressure with the operating threshold of the grinding pressure so that the grinding pressure is within the operating range allowed by the equipment.

[0012] The beneficial effects of the technical solution of the present invention are: 1. The comprehensive adjustment parameter calculation algorithm is adopted to comprehensively consider the temperature deviation, temperature change rate and temperature acceleration. Through smoothing and logarithmic processing, a smooth response to temperature changes is achieved. It can accurately evaluate the current temperature adjustment requirements, ensure the stability and accuracy of temperature adjustment, and effectively reduce over- or under-adjustment caused by temperature fluctuations, thereby maintaining a stable temperature during the grinding process, which helps to improve grinding accuracy and product quality.

[0013] 2. By using the dynamic adjustment algorithm of grinding speed, the grinding speed is adjusted in real time according to the comprehensive adjustment parameters, so that the grinding equipment can dynamically respond to temperature changes, introduce an exponential decay mechanism to prevent excessive adjustment of the grinding speed, balance the relationship between temperature control and grinding speed, prevent uneven grinding caused by temperature changes, and ensure the consistency of grinding quality.

[0014] 3. The dynamic adjustment algorithm of grinding pressure dynamically adjusts the grinding pressure according to the temperature deviation and temperature change rate to ensure that the pressure adjustment is synchronized with the temperature change. The sine function and smoothing method are used to keep the grinding pressure adjustment process smooth and flexible.

[0015] 4. Set the operating thresholds of grinding speed and grinding pressure to ensure that the adjusted grinding speed and grinding pressure are within the operational range of the equipment, protect the safety of the grinding equipment and operating environment, and ensure that the grinding equipment maintains a stable operating state during drastic temperature fluctuations, thereby extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a flow chart of a method for regulating temperature in a flour grinding process. DETAILED DESCRIPTION

[0017] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0019] The specific scheme of the temperature regulating method for flour grinding process provided by the present invention is described in detail below with reference to the accompanying drawings.

[0020] Refer to the attached Figure 1 , which shows a flow chart of a method for regulating temperature in a flour grinding process provided by an embodiment of the present invention, the method comprising the following steps: S1. Monitor and record the temperature in real time, and calculate the comprehensive adjustment parameters using the comprehensive adjustment parameter calculation algorithm; A grinding device, such as model GM-X100, is used to grind flour. The specific structure of the grinding device includes a grinding chamber, a temperature sensor, a power system, a pressure regulation system, a control unit, a human-machine interface, and a cooling system. The grinding chamber is used to grind materials, such as flour. The temperature sensor is arranged at a key position in the grinding chamber to ensure that the temperature change of the material during the grinding process can be accurately monitored. The power system includes a motor and a rotor for driving the grinding operation. The pressure regulation system includes a hydraulic or pneumatic device for controlling the pressure between the grinding rollers to ensure the controllability of the pressure during the grinding process. The control unit includes an integrated PLC (programmable logic controller) and a sensor data processing module, which is responsible for data The human-machine interface is used to operate the equipment, set the target temperature, monitor the operating status and adjust the parameters; the cooling system includes a cooling pipe or a circulating coolant to assist in maintaining the temperature stability during the grinding process; in order to ensure that the collected temperature, grinding speed and grinding pressure data are comparable in different dimensions and avoid the deviation of the calculation results due to the difference in data scale, the collected temperature data (in degrees Celsius), grinding speed data (in revolutions per minute) and grinding pressure data (in Pascal) can be normalized. The normalization method (such as minimum-maximum normalization) is a technical means well known to those skilled in the art and will not be elaborated here; The temperature is monitored and recorded in real time by the temperature sensor installed in the grinding chamber ; According to the real-time monitored and recorded temperature, a comprehensive adjustment parameter is calculated using a comprehensive adjustment parameter calculation algorithm; The comprehensive adjustment parameter calculation algorithm evaluates the current temperature adjustment requirements by combining temperature deviation, temperature change rate and temperature acceleration to ensure stability and accuracy during temperature adjustment. The temperature change rate is smoothed using square root to reduce the drastic effect of the temperature change rate on temperature adjustment and ensure the stability of the temperature adjustment process. The temperature acceleration is logarithmically processed to respond sensitively to drastic temperature fluctuations without excessive temperature adjustment due to drastic changes. The temperature deviation is calculated by comparing the current temperature with the set target temperature, reflecting the degree to which the current temperature deviates from the target temperature. The target temperature can be set according to the specific implementation scenario and is not limited here. The temperature change rate is to understand the temperature change trend, indicating whether the temperature is rising, falling or remaining unchanged. The temperature acceleration reflects the severity of the temperature change, that is, whether the temperature change speed is stable, accelerating or decelerating. The temperature acceleration can be used to determine whether the temperature change trend is intensifying. The specific calculation formula of the comprehensive adjustment parameter calculation algorithm is: in, Represents a comprehensive adjustment parameter used to evaluate the The need for temperature regulation; Indicates at time The temperature deviation is calculated by With target temperature The difference between , reflects the degree to which the current temperature deviates from the target temperature; Indicates at time The temperature change rate reflects the speed of temperature change over time; Represents the square root symbol, which is used to perform nonlinear processing on the rate of temperature change, helping to maintain the stability of temperature regulation; Indicates at time The temperature acceleration reflects the severity of the temperature change; It represents the temperature acceleration processed by logarithmic function. By processing the temperature acceleration by logarithmic function, the sensitivity to the drastic change of temperature is enhanced while avoiding the influence of extreme values. Indicates that the denominator contains 1 and The absolute value of the temperature deviation is used to prevent the adjustment parameters from tending to infinity when the temperature deviation is extremely small, thus maintaining stability; Through the reasonable treatment of temperature deviation, temperature change rate and temperature acceleration, the comprehensive adjustment parameters can provide a scientific reference standard for the subsequent adjustment of grinding speed and grinding pressure, thereby realizing accurate and stable temperature regulation in actual operation.

[0021] S2, based on the comprehensive adjustment parameters, using a grinding speed dynamic adjustment algorithm to calculate the adjusted grinding speed, and using a grinding pressure dynamic adjustment algorithm to calculate the adjusted grinding pressure; Based on the comprehensive adjustment parameters, the grinding speed dynamic adjustment algorithm is used to calculate the adjusted grinding speed; the grinding speed dynamic adjustment algorithm dynamically adjusts the grinding speed of the grinding equipment according to the real-time data of temperature deviation, temperature change rate and temperature acceleration to maintain the temperature stability during the grinding process; the temperature acceleration can reveal the transient characteristics of temperature changes, and the severity of temperature changes is taken into account when adjusting the grinding speed; In order to avoid over-response and instability during the adjustment process, an exponential decay mechanism is introduced when adjusting the grinding speed. Adjustments are made according to the temperature deviation so that the temperature can be smoothly restored to the target temperature. At the same time, the adjustment process is corrected according to the temperature acceleration to prevent overshoot or under-response caused by rapid temperature changes. The specific calculation formula of the adjusted grinding speed is:

[0022] in, Indicates the adjusted grinding speed, that is, in the future time The speed of the grinding equipment; Indicates the current grinding speed, that is, at the current time point The speed of the grinding equipment; It represents the base of natural logarithm, which is used for exponential decay, indicating that the adjustment of grinding speed has nonlinear characteristics; Indicates the weight factor for adjusting the grinding speed, controls the sensitivity of the grinding speed adjustment, and can be set according to the specific implementation scenario, and is not limited here; Represents a comprehensive adjustment parameter used to evaluate the The need for temperature regulation; Indicates at time Temperature deviation; Indicates at time The temperature change rate reflects the speed of temperature change over time; The operating threshold of the grinding speed is set according to the performance of the grinding equipment, including the maximum grinding speed threshold and the minimum grinding speed threshold; the grinding speed is controlled by comparing the calculated adjusted grinding speed with the operating threshold of the grinding speed to ensure that the adjusted grinding speed is within the operating range allowed by the equipment. The specific formula is as follows:

[0023] in, Indicates the adjusted grinding speed, that is, in the future time The speed of the grinding equipment; Indicates the minimum grinding speed threshold; Indicates the maximum grinding speed threshold; By setting the maximum and minimum grinding speed thresholds, the grinding equipment is ensured to operate within a reasonable speed range, which not only prevents the grinding equipment from overloading, but also protects the life of the grinding equipment, while also avoiding the reduction of grinding efficiency due to too low grinding speed; Based on the comprehensive adjustment parameters, the grinding pressure after adjustment is calculated using the grinding pressure dynamic adjustment algorithm; the grinding pressure dynamic adjustment algorithm aims to accurately control the heat generated during the grinding process by dynamically adjusting the grinding pressure, thereby maintaining the temperature in the grinding chamber at the target temperature, and using the temperature change rate and the comprehensive adjustment parameters to adjust the grinding pressure in real time to respond to the instantaneous change of temperature and ensure the temperature stability during the grinding process; The specific calculation formula for the adjusted grinding pressure is:

[0024] in, Indicates the adjusted grinding pressure, i.e., at the future time Grinding pressure; Indicates the current grinding pressure, that is, at the time point Grinding pressure; It represents the grinding pressure adjustment coefficient, which determines the sensitivity of the grinding pressure adjustment to temperature changes. It can be set according to the specific implementation scenario and is not limited here; Represents a comprehensive adjustment parameter used to evaluate the The need for temperature regulation; A sine function representing the rate of temperature change is used to dynamically adjust the pressure through sine function processing; Indicates at time The temperature change rate reflects the speed at which the temperature changes over time; Indicates at time Temperature deviation, by calculating the current temperature With target temperature The difference between , reflects the degree to which the current temperature deviates from the target temperature. The target temperature can be set according to the specific implementation scenario and is not limited here; It represents the temperature deviation adjustment factor, which is calculated according to the ratio of the temperature deviation to the target temperature, and adjusts the influence intensity of the temperature deviation on the grinding pressure adjustment through the power index and the comprehensive adjustment parameters; Represents the power exponential coefficient, which is used to control the influence of temperature deviation on grinding pressure adjustment. It can be set according to the specific implementation scenario and is not limited here; The operating threshold of the grinding pressure is set according to the performance of the grinding equipment, including the maximum grinding pressure threshold and the minimum grinding pressure threshold; the grinding pressure is controlled by comparing the calculated adjusted grinding pressure with the operating threshold of the grinding pressure to ensure that the grinding pressure is within the operable range. The specific formula is as follows:

[0025] in, Indicates the adjusted grinding pressure, i.e., at the future time Grinding pressure; Indicates the minimum grinding pressure threshold; Indicates the maximum grinding pressure threshold; By setting the maximum and minimum grinding pressure thresholds to ensure that the grinding pressure operates within a safe and effective range, poor grinding effect or low efficiency caused by improper grinding pressure control can be prevented; the pressure between the grinding rollers is gradually changed through hydraulic or pneumatic devices. During the adjustment process, the grinding equipment controls the increase and decrease of pressure through valves to ensure a smooth change process. After the pressure is adjusted, continue to monitor the temperature data in real time to observe the effect of the pressure adjustment; By real-time monitoring of temperature and calculation of comprehensive adjustment parameters, the grinding speed and grinding pressure can be dynamically adjusted to effectively regulate temperature changes during the grinding process, ensure the grinding quality and safe operation of the equipment. It has real-time and responsiveness, can adapt to complex and changeable temperature changes during the grinding process, and improve the efficiency and stability of the grinding process.

[0026] In summary, a method for regulating temperature in a flour grinding process is completed.

[0027] The order of the embodiments of the invention is for description only and does not represent the advantages and disadvantages of the embodiments. The processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0028] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A method for regulating temperature during flour grinding, characterized in that: The following steps are involved: S1: monitor and record the temperature in real time, and use the comprehensive adjustment parameter calculation algorithm to calculate the comprehensive adjustment parameter; the specific calculation formula of the comprehensive adjustment parameter calculation algorithm is: ,in, represents comprehensive adjustment parameters; Indicates at time The temperature deviation is calculated by With target temperature The difference between , reflects the degree to which the current temperature deviates from the target temperature; Indicates at time The rate of temperature change; Indicates at time Temperature acceleration; S2: Based on the comprehensive adjustment parameters, the adjusted grinding speed is calculated using the grinding speed dynamic adjustment algorithm, and the adjusted grinding pressure is calculated using the grinding pressure dynamic adjustment algorithm; The specific calculation formula of the adjusted grinding speed is: ,in, is the adjusted grinding speed, indicating the time The speed of the grinding equipment; Indicates the current grinding speed; Represents the base of the natural logarithm, used for exponential decay; Indicates the weight factor for adjusting the grinding speed; The specific calculation formula for the adjusted grinding pressure is: ,in, is the adjusted grinding pressure, expressed in time Grinding pressure; Indicates the current grinding pressure; Indicates the grinding pressure adjustment coefficient; Indicates the temperature deviation adjustment factor; Represents the power exponent coefficient.

2. The method for regulating temperature during flour grinding according to claim 1, characterized in that: The S2 specifically includes: The operating threshold of the grinding speed is set according to the performance of the grinding equipment, and the grinding speed is controlled by comparing the adjusted grinding speed with the operating threshold of the grinding speed so that the adjusted grinding speed is within the operating range allowed by the equipment.

3. The method for regulating temperature during flour grinding according to claim 1, characterized in that: The S2 specifically includes: The operating threshold of the grinding pressure is set according to the performance of the grinding equipment, and the grinding pressure is controlled by comparing the adjusted grinding pressure with the operating threshold of the grinding pressure so that the grinding pressure is within the operating range allowed by the equipment.

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