Intelligent flour mill for whole grains

Abstract

The invention relates to the technical field of grain mills, in particular to an intelligent flour mill for whole grains. The intelligent coarse grain flour mill comprises a movable millstone and a static millstone which are located in a flour milling bin of the intelligent coarse grain flour mill, a thickness adjusting device used for adjusting the distance between the movable millstone and the static millstone, an adjusting motor, a temperature sensor and a controller, the temperature sensor is used for detecting the temperature of the movable millstone and / or the static millstone and is in communication connection with the controller, and a control program for controlling and adjusting operation of the motor according to a signal of the temperature sensor is preset in the controller. The adjusting motor is controlled to operate to drive the thickness adjusting device to form the set adjusting amount so as to adaptively maintain the distance between the movable millstone and the static millstone to meet the requirement, the influence on the distance between the millstones due to thermal expansion when the millstone temperature is very high is reduced, and the powder discharging effect is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of grain mills, and particularly to an intelligent multi-grain flour mill. Background Art

[0002] With the increasing incidence of cardiovascular and cerebrovascular diseases, diabetes and other chronic diseases in people, people pay more attention to the health of their diet. Foods made from single wheat flour cannot meet people's nutritional needs. In recent years, whole grain products have received increasing attention due to their rich phytochemical components and health benefits.

[0003] The production of grain flour relies on a flour mill. The basic structure of the existing grain flour mill can be seen in the flour milling and pulping dual-purpose machine disclosed in the Chinese utility model patent with the authorization announcement number CN219765490U. Inside the machine shell, a static grinding disc and a dynamic grinding disc are installed. The machine shell forms a flour milling bin. There is a discharge port at the bottom of the machine shell, and a feed port is opened above the rear side of the machine shell. A storage hopper is installed above the feed port and communicates with the feed port. A crushing tooth sleeve is installed inside the machine shell. An inlet communicating with the feed port is opened above the crushing tooth sleeve. A feeder is installed inside the crushing tooth sleeve. The feeder has two feeding devices with different shapes and can be used interchangeably with a steel grinding disc or a sand grinding disc. The feeder is slidably connected along the axial direction of the motor rotating shaft to the triangular flat square shaft section of the motor rotating shaft. The dynamic grinding disc is a steel grinding disc or a sand grinding disc and is fixed on two feeding devices with different shapes. The static grinding disc corresponding to the dynamic grinding disc is a steel grinding disc or a sand grinding disc and is fixed on the bottom plane of the machine shell. A coarse and fine adjustment device for adjusting the distance between the dynamic grinding disc and the static grinding disc is installed on the machine cover; the coarse and fine adjustment device includes an adjustment handwheel and steel balls. A bolt column is provided on the adjustment handwheel. The bolt column is threadedly connected to the machine cover. The steel balls are installed at the rear end of the adjustment handwheel and the rear end of the steel balls abuts against the front end face of the feeder. A spring is sleeved on the rotating shaft. One end of the spring abuts against the feeder, and the other end abuts against the step surface of the rotating shaft. The spring has an axially forward elastic force on the feeder. Therefore, by rotating the adjustment handwheel, the feeder can be controlled to slide along the axial direction of the rotating shaft, thereby controlling the distance between the dynamic grinding disc and the static grinding disc.

[0004] The particle sizes and shapes of different grains are different, and the requirements for the fineness and fine powder rate of the ground powder are also different. Therefore, when using a flour mill, it is necessary to adjust the distance between the dynamic grinding disc and the static grinding disc to a suitable distance according to the material to be ground. The distance between the grinding discs is adjusted through the coarse and fine adjustment device, and then flour milling is carried out after adjustment. However, there are still problems. During the flour milling process, the grinding discs will heat up and expand thermally, resulting in a reduction in the gap between the dynamic grinding disc and the static grinding disc, affecting the effect of the ground powder, and the grinding particle size cannot be guaranteed. Moreover, it increases the wear of the grinding discs and the load. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent grain mill to solve the problem that the existing mills are easily affected by the thermal expansion of the grinding discs during the grinding process, which reduces the spacing between the grinding discs and affects the grinding effect.

[0006] The technical solution of the intelligent milling machine for whole grains of the present invention is: A smart flour mill for cereals and grains, comprising a moving grinding disc and a stationary grinding disc in a flour milling bin thereof, and a coarseness and fineness adjusting device for adjusting the distance between the moving grinding disc and the stationary grinding disc, and also comprising an adjusting motor, a temperature sensor and a controller, wherein the adjusting motor is transmission-connected to the coarseness and fineness adjusting device, the temperature sensor is used to detect the temperature of the moving grinding disc and / or the stationary grinding disc and is communication-connected to the controller, and the controller is preset with a control program for controlling the operation of the adjusting motor according to a temperature sensor signal, so that when the temperature of the moving grinding disc and / or the stationary grinding disc reaches a certain set value, the adjusting motor is controlled to operate to drive the coarseness and fineness adjusting device to form a set adjustment amount so as to adapt to maintaining the distance between the moving grinding disc and the stationary grinding disc to meet the requirements.

[0007] Beneficial effect: The present invention is improved on the basis of the mill in the prior art, by setting a temperature sensor to detect the temperature of the grinding disc, and equipping the coarseness and fineness adjustment device with an adjustment motor and a controller. During the grinding process, the controller receives the signal of the temperature sensor. As the mill continues to work, the grinding disc heats up and the temperature rises. At this time, the grinding disc expands and the spacing between the grinding discs is reduced and cannot meet the requirements. When the temperature sensor detects that the temperature reaches a certain set value, the control program of the controller controls the adjustment motor to operate, thereby driving the coarseness and fineness adjustment device to perform an adjustment action and form a set adjustment amount. The adjustment amount corresponds to the temperature setting value, and the temperature value of the grinding disc corresponds to the thermal expansion deformation of the grinding disc, so that the set adjustment amount corresponds to the change in the grinding disc spacing. The adjustment amount set by the coarse and fine adjustment device increases the grinding disc spacing to compensate for the influence of thermal expansion on the reduction of the grinding disc spacing, and adapts to maintaining the spacing between the dynamic grinding disc and the static grinding disc to meet the requirements. The grinding disc spacing can be adjusted within the allowable range according to temperature changes, reducing the influence of thermal expansion on the grinding disc spacing when the grinding disc temperature is very high, which is beneficial to ensure the powder discharge effect, and can reduce the wear of the grinding disc and reduce the load increased due to the small grinding disc gap.

[0008] Furthermore, the mill also includes a refrigeration device, and the controller is preset with a control program for controlling the operation of the refrigeration device according to the temperature sensor signal. The refrigeration device is arranged at the milling bin to cool the bin wall of the milling bin.

[0009] Furthermore, the controller is preset with a program for controlling and adjusting the motor-driven coarseness adjustment device to achieve different spacings between the moving grinding disc and the static grinding disc according to different material information before grinding.

[0010] Further, the motor for driving the movable grinding disc to rotate is configured with a frequency converter, and the controller is preset with a control program for controlling the operation of the frequency converter to adjust the speed through the frequency converter.

[0011] Further, the temperature sensor is an infrared temperature sensor, and the grinding powder bin is provided with an installation hole penetrating through the inside and outside. The infrared temperature sensor is inserted into the installation hole and extends into the inside of the grinding powder bin.

[0012] Further, a gate is provided at the feed inlet of the grinding powder bin, and the gate is configured with a gate driving device for driving the gate to change the opening degree of the feed inlet.

[0013] Further, a level sensor is provided in the feed hopper of the grinder that is connected to the feed inlet of the grinding powder bin. The level sensor is communicatively connected to the controller, and the controller is preset with a program for controlling the operation of the gate driving device according to the signal of the level sensor.

[0014] Further, a temperature detection device is provided in the feed hopper of the grinder that is connected to the feed inlet of the grinding powder bin.

[0015] Further, the grinder includes a coarse grinding module and a fine grinding module. The distance between the movable grinding disc and the stationary grinding disc in the coarse grinding module is greater than that in the fine grinding module. At least the fine grinding module is configured with the regulating motor, the temperature sensor, and the controller.

[0016] Further, gates are provided at the feed inlets of the grinding powder bins of the coarse grinding module and the fine grinding module, and each gate is configured with a gate driving device for driving the gate to change the opening degree of the feed inlet. Description of the Drawings

[0017] Figure 1 is the overall structure schematic diagram of the intelligent multi-grain grinder according to the embodiment of the present invention; Figure 2 is the layout form diagram of the coarse grinding module and the fine grinding module of the intelligent multi-grain grinder according to the embodiment of the present invention; Figure 3 is Figure 1 the structure schematic diagram of the coarse grinding module in Figure 4 is Figure 1 the structure schematic diagram of the fine grinding module in Figure 5 is Figure 1 the circuit principle schematic diagram of the controller of the intelligent multi-grain grinder in Figure 6 is Figure 1 the feed control flow schematic diagram of the intelligent multi-grain grinder in Figure 7 is Figure 1 the fine grinding module adjustment control flow schematic diagram of the intelligent multi-grain grinder in Figure 8 For Figure 1 the schematic diagram of the control process of the fine grinding module cooling system of the intelligent multigrain flour mill in

[0018] In the figure: 2, control panel; 4, inlet temperature sensor; 5, infrared temperature sensor; 6, ultrasonic sensor; 15, coarse grinding motor; 16, fine grinding motor; 17, grinding disc spacing adjustment motor; 18, coarse grinding electric push rod; 19, fine grinding electric push rod; 20, semiconductor refrigeration sheet; 24, box body; 25, coarse grinding motor housing; 26, feed hopper; 27, control cabinet; 28, ultrasonic sensor bracket; 29, coarse grinding inlet adjustment piece; 30, coarse grinding electric push rod bracket; 31, coarse grinding flour bin cover switch; 32, coarse grinding fineness regulator; 33, coarse grinding flour bin cover; 34, coarse grinding screw conveyor; 35, coarse grinding moving grinding disc; 36, coarse grinding static grinding disc; 37, coarse grinding tooth sleeve; 38, coarse grinding flour bin; 39, feed nozzle; 40, fine grinding inlet adjustment piece; 41, fine grinding electric push rod bracket; 42, fine grinding flour bin cover switch; 43, servo motor connecting plate; 44, servo motor bracket; 45, connecting piece; 46, fine grinding fineness regulator; 47, fine grinding flour bin cover; 48, fine grinding screw conveyor; 49, fine grinding moving grinding disc; 50, fine grinding static grinding disc; 51, fine grinding tooth sleeve; 52, fine grinding flour bin. Specific embodiments

[0019] The basic concept of the intelligent multigrain flour mill of the present invention is to adjust the grinding disc spacing corresponding to the grinding disc temperature, which can reduce the influence of the reduction of the grinding disc spacing due to thermal expansion when the grinding disc temperature is very high, and is beneficial to ensuring the flour output effect.

[0020] The technical solutions of the present invention will be specifically described below in conjunction with specific embodiments.

[0021] Embodiment of the intelligent multigrain flour mill of the present invention: Such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown in the figure, the intelligent multi-grain grinder includes a feeding hopper 26, a coarse grinding module, a fine grinding module, and a box body 24. The coarse grinding module includes a coarse grinding powder grinding bin 38, a coarse grinding moving grinding disc 35 and a coarse grinding static grinding disc 36 located in the coarse grinding powder grinding bin 38, and a coarse grinding motor 15 for driving the coarse grinding moving grinding disc 35 to rotate relative to the coarse grinding static grinding disc 36. The fine grinding module includes a fine grinding powder grinding bin 52, a fine grinding moving grinding disc 49 and a fine grinding static grinding disc 50 located in the fine grinding powder grinding bin 52, and a fine grinding motor 16 for driving the fine grinding moving grinding disc 49 to rotate relative to the fine grinding static grinding disc 50. The feeding hopper 26 is located above the coarse grinding module, and the coarse grinding module is located above the fine grinding module. The material is added into the feeding hopper 26. The feeding hopper 26 communicates with the coarse grinding powder grinding bin 38, and the coarse grinding powder grinding bin 38 communicates with the fine grinding powder grinding bin 52. The material in the feeding hopper 26 first enters the coarse grinding powder grinding bin 38 for coarse grinding, then enters the fine grinding powder grinding bin 52 for fine grinding, and then exits from the discharge port of the fine grinding powder grinding bin 52.

[0022] The outside of the coarse grinding motor 15 is provided with a coarse grinding motor housing 25. The coarse grinding motor housing 25 is fixed on the top surface of the box body 24. The coarse grinding powder grinding bin 38 is fixed to the side surface of the coarse grinding motor housing 25. The output shaft of the coarse grinding motor 15 extends into the coarse grinding powder grinding bin 38. There is a space in the coarse grinding powder grinding bin 38 for fitting and fixedly installing a coarse grinding tooth sleeve 37. The coarse grinding tooth sleeve 37 is provided with a side opening corresponding to the feeding port of the coarse grinding powder grinding bin 38 up and down. The coarse grinding static grinding disc 36 is fixed to the inner wall of the coarse grinding powder grinding bin 38. A coarse grinding screw conveyor 34 is provided in the coarse grinding powder grinding bin 38. The coarse grinding screw conveyor 34 includes a fixed disc and a screw conveyor shaft. The fixed disc is fixed to the coarse grinding moving grinding disc 35. The screw conveyor shaft passes through the coarse grinding moving grinding disc 35, the coarse grinding static grinding disc 36, and the coarse grinding tooth sleeve 37 and is rotationally fixed to the output shaft of the coarse grinding motor 15. The output shaft of the coarse grinding motor 15 is inserted into the rotationally fixed mating hole extending axially of the screw conveyor shaft. The space for installing the grinding disc in the coarse grinding powder grinding bin 38 is large, the space for installing the coarse grinding tooth sleeve 37 is small and this space belongs to the small-diameter section. The small-diameter section of the coarse grinding powder grinding bin 38 is provided with a feeding port and is connected to the feeding hopper 26.

[0023] The coarse grinding powder grinding bin 38 has a coarse grinding powder grinding bin cover 33 facing away from the coarse grinding motor housing 25. A coarse grinding fineness regulator 32 is installed on the coarse grinding powder grinding bin cover 33. By screwing the knob of the coarse grinding fineness regulator 32, the coarse grinding moving grinding disc 35 and the coarse grinding screw conveyor 34 can be driven to move axially, so as to change the distance between the coarse grinding moving grinding disc 35 and the coarse grinding static grinding disc 36. A spring for pressing the screw conveyor shaft of the coarse grinding screw conveyor 34 towards the cover direction is also provided in the coarse grinding powder grinding bin 38 to maintain its position. The principle of the fineness regulator is a known technology and will not be elaborated here.

[0024] One side of the cover 33 of the rough grinding powder bin is hinged to the body of the rough grinding powder bin 38, and the other side opposite in the radial direction is used to cooperate with the rough grinding powder bin cover switch 31 to open or close the cover. The rough grinding static grinding disc 36 is located on the side of the rough grinding dynamic grinding disc 35 facing away from the cover 33 of the rough grinding powder bin, and the fixed disc of the rough grinding screw conveyor mechanism 34 is located on the side of the rough grinding dynamic grinding disc 35 facing away from the rough grinding static grinding disc 36. The inlet of the rough grinding powder bin 38 faces upward, and the outlet faces downward and leads to the inlet of the fine grinding powder bin 52.

[0025] The main structures of the fine grinding module and the rough grinding module are the same. The fine grinding motor 16 is fixed inside the box body 24. The box body 24 is a cuboid made of stainless steel. The fine grinding powder bin 52 is located outside the box body 24 and fixed to the side of the box body 24. The output shaft of the fine grinding motor 16 extends into the fine grinding powder bin 52. There is a space in the fine grinding powder bin 52 for fitting and fixedly installing the fine grinding tooth sleeve 51. The fine grinding tooth sleeve 51 is provided with a side opening corresponding to the inlet of the fine grinding powder bin 52 up and down. The fine grinding static grinding disc 50 is fixed to the inner wall of the fine grinding powder bin 52. A fine grinding screw conveyor mechanism 48 is provided in the fine grinding powder bin 52. The fine grinding screw conveyor mechanism 48 includes a fixed disc and a screw conveyor shaft. The fixed disc is fixed to the fine grinding dynamic grinding disc 49. The screw conveyor shaft passes through the fine grinding dynamic grinding disc 49, the fine grinding static grinding disc 50 and the fine grinding tooth sleeve 51 and is non-rotatably connected to the output shaft of the fine grinding motor 16. The output shaft of the fine grinding motor 16 is inserted into the non-rotating mating hole extending axially in the screw conveyor shaft. The space for installing the grinding disc in the fine grinding powder bin 52 is large, and the space for installing the fine grinding tooth sleeve 51 is small and this space belongs to the small-diameter section. The small-diameter section of the fine grinding powder bin 52 is connected with a feed nozzle 39. The feed nozzle 39 has a flared structure facing upward to form its inlet.

[0026] The fine grinding powder bin 52 has a cover 47 of the fine grinding powder bin facing away from the box body 24. A fine grinding fineness regulator 46 is installed on the cover 47 of the fine grinding powder bin, that is, a fineness adjusting device for adjusting the distance between the fine grinding dynamic grinding disc 49 and the fine grinding static grinding disc 50. By turning the knob of the fine grinding fineness regulator 46, the fine grinding dynamic grinding disc 49 and the fine grinding screw conveyor mechanism 48 can be driven to move axially to change the distance between the fine grinding dynamic grinding disc 49 and the fine grinding static grinding disc 50. A spring for pressing the screw conveyor shaft of the fine grinding screw conveyor mechanism 48 toward the cover direction is also provided in the fine grinding powder bin 52 to maintain its position.

[0027] One side of the cover 47 of the fine grinding powder bin is hinged to the body of the fine grinding powder bin 52, and the other side opposite in the radial direction is used to cooperate with the cover switch 42 of the fine grinding powder bin to open or close the cover. The cover forms a part of the wall of the powder bin. The fine grinding static grinding disc 50 is located on the side of the fine grinding dynamic grinding disc 49 facing away from the cover 47 of the fine grinding powder bin, and the fixed disc of the fine grinding screw conveyor mechanism 48 is located on the side of the fine grinding dynamic grinding disc 49 facing away from the fine grinding static grinding disc 50. The inlet of the fine grinding powder bin 52 faces upward, and the outlet faces downward.

[0028] The distance between the moving grinding disc and the static grinding disc of the coarse grinding module is greater than that between the moving grinding disc and the static grinding disc of the fine grinding module. After the grain enters the grinding bin from the feed inlet, it enters the space where the screw conveying shaft of the screw conveying mechanism is located from the side opening of the gear sleeve, and is transported to the space between the moving grinding disc and the static grinding disc through the screw conveying shaft for grinding and crushing. The coarse grinding motor 15 drives the coarse grinding moving grinding disc 35 and the coarse grinding spiral conveying mechanism 34 to rotate, and the grain from the feed inlet is drawn into the coarse grinding bin 38. The grain entering the coarse grinding bin 38 is crushed by the extrusion, shearing and friction of the moving grinding disc and the static grinding disc, and then falls into the feed inlet 39 of the fine grinding module for fine grinding.

[0029] The intelligent grain grinding machine also includes an adjusting motor, a temperature sensor and a controller. The adjusting motor is connected to the coarseness and fineness adjusting device through transmission. The temperature sensor is used to detect the temperature of the moving grinding disc and is communicated with the controller. The controller is preset with a control program for controlling the operation of the adjusting motor according to the temperature sensor signal, so that when the temperature of the moving grinding disc reaches a certain set value, the adjusting motor is controlled to drive the coarseness and fineness adjusting device to form a set adjustment amount to adapt to maintaining the distance between the moving grinding disc and the static grinding disc to meet the requirements.

[0030] The temperature of the grinding disc is detected by setting a temperature sensor, and the coarse and fine adjustment device is equipped with an adjustment motor and a controller. During the grinding process, the controller receives the signal of the temperature sensor. As the mill continues to work, the grinding disc heats up and the temperature rises. At this time, the grinding disc expands and the grinding disc spacing is reduced and cannot meet the requirements. When the temperature sensor detects that the temperature reaches a certain set value, the control program of the controller will control the adjustment motor to operate, thereby driving the coarse and fine adjustment device to perform an adjustment action and form a set adjustment amount. The adjustment amount corresponds to the temperature setting value, and the temperature value of the grinding disc corresponds to the thermal expansion deformation of the grinding disc, so that the set adjustment amount corresponds to the change in the grinding disc spacing. The adjustment amount set by the coarse and fine adjustment device is used to increase the grinding disc spacing to compensate for the influence of thermal expansion on the reduction of the grinding disc spacing, and adapt to maintaining the spacing between the moving grinding disc and the static grinding disc to meet the requirements. The grinding disc spacing can be adjusted within the allowable range according to the temperature change, reducing the influence of thermal expansion on the grinding disc spacing when the grinding disc temperature is very high, which is beneficial to ensuring the powder discharge effect, and can reduce the wear of the grinding disc and reduce the load increased due to the small grinding disc gap.

[0031] The temperature setting threshold can be set to multiple high and low values. When the temperature reaches the corresponding temperature value, the control motor drives the knob of the coarseness regulator to rotate the set angle, so that the grinding disc has a set axial displacement, and the grinding disc spacing is adjusted to the corresponding spacing under the temperature value, which can try to maintain the initially set spacing. The corresponding relationship between temperature and adjustment amount can be obtained in advance through experiments and calculations, and the corresponding adjustment amount can be achieved through a preset program.

[0032] In this embodiment, only the fine grinding module can intelligently adjust the grinding disc spacing. The adjusting motor is the grinding disc spacing adjusting motor 17 that is drivingly connected to the fine grinding fineness adjuster 46. The grinding disc spacing adjusting motor 17 is a servo motor and is configured with an encoder communicatively connected to the controller, which can detect the rotation angle of the servo motor, so as to facilitate the controller to control the axial displacement amount of the moving grinding disc caused by the servo motor driving the fineness adjuster. The temperature sensor is the infrared temperature sensor 5 for detecting the temperature of the fine grinding moving grinding disc 49, which adopts non-contact measurement and has high precision. In other embodiments, both the coarse grinding module and the fine grinding module can also intelligently adjust the grinding disc spacing, and both the fine grinding module and the coarse grinding module are configured with an adjusting motor and a temperature sensor. In other embodiments, it is also possible to only measure the temperature of the stationary grinding disc, or measure the temperatures of both the moving grinding disc and the stationary grinding disc as the temperature signal input to the controller.

[0033] A servo motor bracket 44 is fixed to the outer side surface of the fine grinding powder bin cover 47. A servo motor connecting plate 43 is fixed to the servo motor bracket 44, and the grinding disc spacing adjusting motor 17 is fixed to the servo motor connecting plate 43. A connecting member 45 is fixed to the outer side surface of the knob of the fine grinding fineness adjuster 46, and the connecting member 45 is non-rotatably connected to the output shaft of the grinding disc spacing adjusting motor 17 to drive the fine grinding fineness adjuster 46 to control the grinding disc spacing of the fine grinding module.

[0034] The fine grinding powder bin cover 47 is provided with an installation hole penetrating through the inside and outside. The infrared temperature sensor 5 is inserted into the installation hole and extends into the powder bin interior, and faces the fine grinding moving grinding disc 49 to detect its temperature.

[0035] This flour mill further includes a refrigeration device. The controller presets a control program for controlling the operation of the refrigeration device according to the temperature sensor signal. The refrigeration device is arranged at the powder bin to cool the bin wall of the powder bin. In this embodiment, the refrigeration device is the thermoelectric cooler 20 fixed to the outer side surface of the fine grinding powder bin cover 47. Two or more thermoelectric coolers 20 are arranged along the circumferential direction, and the thermoelectric coolers 20 are adhered to the fine grinding powder bin cover 47 through metal glue. When the flour mill is working, the moving grinding disc and the stationary grinding disc are grinding against each other. Due to the frictional force and the release of energy during grain crushing, the grinding discs will heat up rapidly. Overheating will cause inaccurate grinding accuracy and excessive loss of flour moisture. The infrared temperature sensor 5 senses the temperature of the grinding discs during fine grinding, thereby controlling the thermoelectric cooler 20 to cool and controlling the temperature of the grinding discs during fine grinding.

[0036] The controller is preset with a program for controlling and adjusting the motor to drive the coarse and fine adjustment device according to different material information before grinding to achieve different distances between the moving grinding disc and the static grinding disc. The particle sizes and shapes of different grains are different, and the required distances between the grinding discs are different. Before grinding, the appropriate distance between the grinding discs can be selected according to the corresponding grain. The particle information of the incoming material is input through the control panel 2 of the controller, and the servo motor accurately controls the distance between the grinding discs. The distance between the grinding discs before grinding and during the grinding process can be adjusted adaptively.

[0037] The fine grinding motor 16 is equipped with a frequency converter, and the controller is preset with a control program for controlling the operation of the frequency converter to adjust the speed through the frequency converter, and the speed of the grinding disc can be adjusted according to needs.

[0038] Gate valves are provided at the inlets of the grinding bins of the coarse grinding module and the fine grinding module. The gate valves are used to form inlet valves, and each gate valve is equipped with a gate driving device for driving the gate valve to change the opening degree of the inlet. The gate valve of the coarse grinding module is the coarse grinding inlet adjusting piece 29, and the corresponding gate driving device is the coarse grinding electric push rod 18. The gate valve of the fine grinding module is the fine grinding inlet adjusting piece 40, and the corresponding gate driving device is the fine grinding electric push rod 19. The coarse grinding electric push rod 18 is fixed on the coarse grinding electric push rod bracket 30, and the coarse grinding electric push rod bracket 30 is fixed on the box body 24. The fine grinding electric push rod 19 is fixed on the fine grinding electric push rod bracket 41, and the fine grinding electric push rod bracket 41 is fixed on the box body 24.

[0039] A level sensor is provided in the feed hopper 26. The level sensor is an ultrasonic sensor 6, and the ultrasonic sensor 6 is communicatively connected to the controller. The controller is preset with a program for controlling the operation of the electric push rod according to the signal of the level sensor. If the feeding speed is too fast, the grinding machine cannot effectively grind the grains into fine powder evenly and is prone to clogging. If it is too slow, it will affect the working efficiency. The control panel 2 sets the feeding information. The level is sensed by the level sensor, and the electric push rod drives the inlet adjusting piece to adjust the opening degree of the inlet to control the feeding speed, so as to avoid the situation that the grinding machine cannot effectively grind the grains into fine powder evenly due to too fast feeding speed.

[0040] A temperature detection device is also provided in the feed hopper 26. The temperature detection device is the inlet temperature sensor 4. The inlet temperature sensor 4 is used to detect the temperature of the grains at the inlet, and this temperature value can be displayed on the control panel 2.

[0041] Combined Figure 5 、 Figure 6 、 Figure 7 、 Figure 8, the control system of the flour mill includes a PLC, an intermediate relay, a servo driver, a frequency converter, and a sensor assembly. The PLC is the controller. The controller, intermediate relay, servo driver, and frequency converter are all installed in the control cabinet 27 and the box body 24. The actuators connected to the control system include a coarse grinding motor 15, a fine grinding motor 16, a grinding disc spacing adjustment motor, a coarse grinding electric push rod 18, a fine grinding electric push rod 19, and a semiconductor refrigeration sheet 20. The sensor assembly includes a feed temperature sensor 4, an infrared temperature sensor 5, an ultrasonic sensor 6, and an encoder. Each sensor and the control panel 2 are respectively connected to the PLC. The ultrasonic sensor is installed above the feed hopper 26 through the ultrasonic sensor bracket 28, and the control panel 2 is installed on the box body 24.

[0042] The controller uses a small PLC. The fine grinding motor 16 is speed-regulated through a frequency converter. The electric push rod extends and retracts through two intermediate relays. The grinding disc spacing adjustment motor performs position control through a servo driver and receives the signals fed back by the encoder and the infrared temperature sensor 5. One semiconductor refrigeration sheet 20 is controlled to work and stop through an intermediate relay.

[0043] The grinding disc spacing adjustment motor 17 automatically controls the fine grinding thickness adjuster 46 to adjust the grinding disc spacing according to the material information input by the control panel 2. The control system controls the working parameters of the equipment through the actuator according to the information fed back by the sensor assembly. By setting the feed parameters through the control panel 2, the controller can intelligently adjust the working parameters of the equipment according to the information obtained by the sensor, and the working parameters of the equipment can be detected in real time through the sensor on the control panel 2.

[0044] During the flour grinding process of the flour mill, due to vibration and the increase in grinding temperature, the grinding disc spacing is unstable. Adaptive control can be achieved through the control system and the sensor assembly. Through the temperature feedback of the infrared temperature sensor and the angle feedback of the encoder, closed-loop control is realized. The temperature sensor is used for temperature feedback, and when the temperature rises, the servo motor makes appropriate adjustments.

[0045] The working status of the equipment, such as the feed temperature, feed speed, coarse grinding motor speed, fine grinding motor speed, grinding disc temperature, and grinding disc spacing, can be viewed in real time on the control panel. Through the feed information input by the control panel, the equipment can automatically control the electric push rod, motor speed, and grinding disc spacing, enabling the flour grinding to achieve the best effect.

[0046] This intelligent multi-grain flour mill can perform on-line detection and regulation, realizing efficient, intelligent, and diversified flour grinding. By sensing the characteristics of grains, the working parameters of the equipment are intelligently adjusted, ultimately achieving the goals of improving flour quality, reducing equipment power consumption, and improving work efficiency, enhancing economic benefits, and adapting to the whole grain flour production process.

[0047] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative efforts, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intelligent multi-grain grinder, comprising a moving grinding disc and a static grinding disc located in its grinding bin, and a coarse-fine adjustment device for adjusting the distance between the moving grinding disc and the static grinding disc, characterized in that, It further includes an adjusting motor, a temperature sensor and a controller. The adjusting motor is in transmission connection with the coarse and fine adjusting device. The temperature sensor is used to detect the temperature of the moving grinding disc and / or the static grinding disc and is communicatively connected to the controller. The controller is preset with a control program for controlling the operation of the adjusting motor according to the signal of the temperature sensor, so as to control the adjusting motor to operate to drive the coarse and fine adjusting device to form a set adjustment amount when the temperature of the moving grinding disc and / or the static grinding disc reaches a certain set value, so as to adapt to maintaining the distance between the moving grinding disc and the static grinding disc to meet the requirements.

2. The intelligent multigrain grinder according to claim 1, characterized in that, The flour mill further includes a refrigeration device. The controller is preset with a control program for controlling the operation of the refrigeration device according to the signal of the temperature sensor. The refrigeration device is arranged in the grinding bin to cool the wall of the grinding bin.

3. The intelligent multi-grain flour mill according to claim 1 or 2, characterized in that, The controller is preset with a program for controlling the adjusting motor to drive the coarse and fine adjusting device to achieve different distances between the moving grinding disc and the static grinding disc according to different material information before grinding.

4. The intelligent multigrain grinder according to claim 1 or 2, characterized in that, The motor for driving the rotation of the moving grinding disc is configured with an inverter. The controller is preset with a control program for controlling the operation of the inverter to adjust the speed through the inverter.

5. The intelligent multi-grain grinder according to claim 1 or 2, characterized in that, The temperature sensor is an infrared temperature sensor. The grinding bin is provided with an installation hole that penetrates through the inside and outside. The infrared temperature sensor is inserted into the installation hole and extends into the inside of the grinding bin.

6. The intelligent multigrain grinder according to claim 1 or 2, characterized in that, A gate is provided at the feed inlet of the grinding bin. The gate is configured with a gate driving device for driving the gate to change the opening degree of the feed inlet.

7. The intelligent multigrain grinder according to claim 6, characterized in that, A level sensor is provided in the feed hopper connected to the feed inlet of the grinding bin of the flour mill. The level sensor is communicatively connected to the controller. The controller is preset with a program for controlling the operation of the gate driving device according to the signal of the level sensor.

8. The intelligent multigrain grinder according to claim 1 or 2, characterized in that, A temperature detection device is provided in the feed hopper connected to the feed inlet of the grinding bin of the flour mill.

9. The intelligent multigrain grinder according to claim 1 or 2, characterized in that, The flour mill includes a coarse grinding module and a fine grinding module. The distance between the moving grinding disc and the static grinding disc in the coarse grinding module is greater than that in the fine grinding module. At least the fine grinding module is configured with the adjusting motor, the temperature sensor and the controller.

10. The intelligent multi-grain grinder according to claim 9, characterized in that, Gates are provided at the feed inlets of the grinding bins of the coarse grinding module and the fine grinding module. Each gate is configured with a gate driving device for driving the gate to change the opening degree of the feed inlet.

Images