Series type multi-device automatic milling system

Abstract

The present application provides a grain processing system capable of achieving processing capacity balance and processing quality up to standard for each device, comprising: at least two milling devices and a control device. The control device comprises: at least one flow detection unit for detecting the conveying flow of the milling device located at the upstream position to the conveying device; and a series control device having: a conveying flow acquisition part for acquiring the conveying flow from the flow detection unit in real time; a processing flow acquisition part for acquiring the current processing flow of each milling device for milling the grain; a matching judgment part for judging whether the current processing flow of the milling device matches the conveying flow at the upstream position of the milling device; and a processing adjustment part for controlling the milling device to adjust the current processing flow to match the conveying flow when the matching judgment part judges that the current processing flow does not match the conveying flow.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of grain processing machinery, and particularly relates to an automatic milling system formed by connecting multiple milling devices in series. BACKGROUND

[0002] Rice and other grains are often processed using milling devices. For example, after the hulls of the grains are removed to obtain brown rice, the brown rice is milled to remove the skin and germ to form white rice.

[0003] In order to improve the efficiency of the milling process, multiple milling devices can be connected in series in actual use. The grains processed by the upstream milling device are input into the downstream milling device for further processing. Due to the differences in the actual processing of each device, the amount of grains that can be processed by each device in a unit of time is not necessarily the same, which can result in the problem that the upstream device delivers too many grains for the downstream device to process, or the upstream device delivers too few grains for the downstream device to idle.

[0004] In addition, the above-mentioned series milling device is usually matched with a grain hulling device, a polishing device and other processing devices of other processes to form a processing system that can complete the entire processing process of the grains. In this processing system, it is even more difficult to achieve processing capacity balance and quality standards. SUMMARY

[0005] To solve the above problems, a grain processing system capable of achieving processing capacity balance and meeting the processing quality standards of each device is provided. The present application adopts the following technical solutions:

[0006] The application provides a series type multi-device automatic milling system for sequentially milling grains, characterized in that the system comprises at least two milling devices for milling grains and a control device for controlling the milling process, wherein the milling device has a main roller, a main roller driving mechanism for driving the main roller to rotate, a sand belt driven by the main roller, a plurality of whitening chambers for containing grains and cooperating with the sand belt to realize milling, and a feeding mechanism for guiding grains into the whitening chambers and a discharging mechanism for discharging the grains milled by the whitening chambers; the milling devices are connected in series, the discharging mechanism of the milling device at an upstream position is connected to the feeding mechanism of the milling device at a downstream position through a connecting mechanism, and the control device comprises at least one flow detection unit arranged in any one or several of the connecting mechanism, the feeding mechanism and the discharging mechanism, for detecting the conveying flow of grains conveyed from the milling device at the upstream position to the milling device at the downstream position; and a series control device having a conveying flow acquisition part for acquiring the conveying flow from the flow detection unit in real time as the conveying flow, a processing flow acquisition part for acquiring the current processing flow of grains processed by each milling device, a matching judgment part for judging whether the current processing flow of the milling device matches the conveying flow at the upstream position of the milling device, and a processing adjustment part for controlling the milling device to adjust the current processing flow to match the conveying flow when the matching judgment part judges that the current processing flow does not match the conveying flow.

[0007] The series type multi-device automatic milling system provided by the application can further have the following technical features: the milling device has a discharging control part, the processing adjustment part sends a processing reduction signal to the milling device corresponding to the processing flow when the matching judgment part judges that the current processing flow is too high to match the conveying flow, the processing adjustment part sends a processing improvement signal to the milling device corresponding to the processing flow when the matching judgment part judges that the current processing flow is too low to match the conveying flow, and the discharging control part controls the discharging mechanism to reduce the discharging flow according to the processing reduction signal or to increase the discharging flow according to the processing improvement signal.

[0008] Further, the series type multi-device automatic milling system provided by the application can further have the following technical features: the main roller driving mechanism is an electric motor, and the milling device can further have a milling current value acquisition part for acquiring the current milling current value in real time according to the working current value of the main roller driving mechanism during the milling process, a comparison judgment part for judging the size relationship between the current milling current value and a predetermined standard current value, and a rotating speed control part for controlling the rotating speed of the main roller driving mechanism.

[0009] Further, the series connection type multi-device automatic grinding system provided by the present application can further have the following technical features: when the comparison judging unit judges that the current grinding current value is greater than the standard current value, the rotating speed control unit controls the main drum driving mechanism to reduce the rotating speed; when the comparison judging unit judges that the current grinding current value is less than the standard current value, the rotating speed control unit controls the main drum driving mechanism to increase the rotating speed.

[0010] In addition, the series connection type multi-device automatic grinding system provided by the present application can further have the following technical features: the discharging mechanism can further include: a grinding cavity discharging assembly having an outlet portion arranged at the lower end of the grinding chamber, a rotating plate rotatably arranged in the outlet portion, and a pushing member capable of pushing the rotating plate to rotate; a discharging adjusting assembly having a rotating disc capable of pushing the pushing member to rotate so as to change the angle of the rotating plate, and a driving member driving the rotating disc to rotate, and the discharging control unit changes the discharging flow rate by controlling the driving member to drive the rotating disc to rotate so as to change the grinding opening angle between the rotating plate and the outlet portion.

[0011] In addition, the series connection type multi-device automatic grinding system provided by the present application can further have the following technical features: the discharging mechanism includes a plurality of discharging valves arranged at the lower end of the grinding chamber, and the discharging valves are electrically controlled valves, and the processing control unit changes the discharging flow rate by controlling the grinding opening angle of the electrically controlled valves.

[0012] In addition, the series connection type multi-device automatic grinding system provided by the present application can further have the following technical features: the series connection control device further includes: a standard current storage unit storing different grinding varieties and corresponding standard current values of different grinding devices; and a retrieval obtaining unit used for retrieving and obtaining the corresponding standard current value from the standard current storage unit according to the current grinding variety.

[0013] Further, the series connection type multi-device automatic grinding system can further include an operation terminal having: a picture storage unit storing a grinding variety selection picture used for displaying the grinding varieties stored in the standard current storage unit; and an input display unit used for displaying the grinding variety selection picture so as to allow an operator to select the current grinding variety.

[0014] Effects of the Invention

[0015] According to the series connection type multi-device automatic grinding system provided by the present application, since the flow detection unit can detect the conveying flow rate of the upstream adjacent device of each grinding device, the matching judging unit can judge whether the conveying flow rate matches the current processing flow rate of the grinding device, and the processing adjusting unit can control corresponding adjustment when the conveying flow rate does not match the current processing flow rate of the grinding device, thus, the processing flow rate of the grinding device can be adjusted and matched according to the actual conveying flow rate (i.e. the flow rate input into the grinding device) of the upstream of the grinding device, and the problem of unbalanced processing amount can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structure block diagram of the serial type multi-device automatic grinding system of the embodiment one of the present application;

[0017] Figure 2 is a structure schematic diagram of the serial type multi-device automatic grinding system of the embodiment one of the present application;

[0018] Figure 3 is a side view structure diagram of the grinding device of the embodiment one of the present application;

[0019] Figure 4 is a three-dimensional structure diagram of the grinding device of the embodiment one of the present application;

[0020] Figure 5 is a top view structure diagram of the grinding device of the embodiment one of the present application;

[0021] Figure 6 is a structure diagram of the grinding chamber of the embodiment one of the present application;

[0022] Figure 7 is a three-dimensional structure diagram of the grinding cavity discharging assembly of the embodiment one of the present application;

[0023] Figure 8 is a three-dimensional structure diagram of the grinding chamber and the discharging adjusting assembly of the embodiment one of the present application in the matching state;

[0024] Figure 9 is a sectional view structure diagram of the grinding chamber and the discharging adjusting assembly of the embodiment one of the present application in the matching state;

[0025] Figure 10 is an action flow chart of the grinding processing procedure of the embodiment one of the present application;

[0026] Figure 11 is a structure block diagram of the serial type multi-device automatic grinding system of the embodiment two of the present application;

[0027] Reference numerals: 100, 300 - Serial multi-equipment automatic grinding system; 10 - Grinding equipment; 1 - Grinding mechanism; 11 - Frame; 111 - Base; 112 - Column; 113 - Top cover; 12 - Main drum; 121 - Main cylinder body; 122 - Main drum shaft; 13 - Tensioning drum; 14 - Sanding belt; 15 - Whitening chamber; 151 - Grinding cavity; 152 - Discharge channel; 153 - Feed inlet; 154 - Discharge outlet; 16 - Discharge pipe; 17 - Bran discharge channel; 18 - Fan; 2 - Hopper; 3 - Main drum drive mechanism; 4 - Feeding mechanism; 5 - Discharge mechanism; 50 - Discharge mounting platform; 51 - Outlet; 52 - Rotating plate; 53 - Reset component; 54 - Actuating component; 55 - Turntable; 55 - Notch; 56 - Coupling. ; Drive unit 57; Push rod 58; Proximity switch one 59; Proximity switch two 60; Discharge control unit 7; Speed ​​control unit 8; Comparison and judgment unit 9; Equipment control unit 91; Equipment communication unit 92; Control equipment 20; Flow detection unit 21; Series control device 22; Conveying flow acquisition unit 221; Processing flow acquisition unit 222; Matching judgment unit 223; Processing adjustment unit 224; Series control unit 225; Run switch 226; Series communication unit 227; Standard current storage unit 229; Retrieval and acquisition unit 228; Operation terminal 30; Input display unit 31; Screen storage unit 32; Operation communication unit 33; Operation control unit 34; Platform 200. Detailed Implementation

[0028] The specific embodiments of the present invention will be described below with reference to the accompanying drawings and examples.

[0029] <Example 1>

[0030] This embodiment provides a series-connected multi-device automatic grinding system for grinding grains.

[0031] Figure 1 This is a structural block diagram of the series-connected multi-device automatic grinding system according to Embodiment 1 of the present invention. Figure 2 This is a schematic diagram of the structure of the series-connected multi-device automatic grinding system according to Embodiment 1 of the present invention.

[0032] like Figure 1 as well as Figure 2 As shown, the series-connected multi-equipment automatic grinding system 100 includes multiple grinding equipment 10, control equipment 20, and multiple conveying mechanisms 30.

[0033] In this embodiment, there are three milling devices 10 connected in series, with the grain output from the upstream milling device 10 entering the adjacent downstream milling device 10. In the following description, "first machine," "second machine," etc., refer to the first machine and the second machine in the direction from upstream to downstream. Figure 2 In the image, the hollow arrow indicates the direction of grain flow.

[0034] The conveying mechanism 30 is used to convey grains between the milling devices 10. In this embodiment, each milling device 10 is set at a substantially the same horizontal height. The conveying mechanism 30 is a grain elevator that can convey grains from bottom to top.

[0035] Figure 3 This is a side view of the grinding equipment according to Embodiment 1 of the present invention. Figure 4 This is a three-dimensional structural diagram of the grinding equipment according to Embodiment 1 of the present invention. Figure 4 The structures below the material hopper 2 and platform 200 are omitted.

[0036] like Figures 1-4 As shown, the grinding equipment 10 includes a grinding mechanism 1, a hopper 2, a main drum drive mechanism 3, a feeding mechanism 4, a discharging mechanism 5, a grinding current value acquisition unit 6, a discharge control unit 7, a speed control unit 8, a comparison and judgment unit 9, an equipment control unit 91, and an equipment communication unit 92.

[0037] The hopper 2 is located above the grinding mechanism 1 and is fixed by a support structure such as a support frame or support column (not shown in the support structure diagram). The conveying outlet of the conveying mechanism 30 is connected to the inlet of the hopper 2, so that the grain elevator can input grain from the upstream equipment into the hopper 2.

[0038] The grinding mechanism 1 includes a frame 11, a main drum 12, a tensioning drum 13, a sanding belt 14, and multiple whitening chambers 15.

[0039] Figure 5 This is a top view of the grinding equipment according to Embodiment 1 of the present invention. Figure 5 The material hopper 2, feeding mechanism 4, and whitening chamber 15 are omitted.

[0040] like Figures 3-5 As shown, the frame 11 has a base 111, a column 112 and a top cover 113.

[0041] The base 111 is rectangular and is used to support the entire grinding mechanism 1.

[0042] like Figure 3 As shown, in this embodiment, the grinding equipment 10 is set on a platform 200 that is higher than the ground in the production workshop, so the base 111 is placed on the upper surface of the platform 200.

[0043] There are two columns 112, both of which are hollow columnar structures with an approximately rectangular cross-section, and are set on the base 11, located at two adjacent corners of the base 111 respectively.

[0044] The top cover 113 is straddling the tops of the two pillars 112, covering the two pillars 112 (the top cover 113 is located on the top of the two pillars 112). Figure 5 (Not shown in the image).

[0045] The main roller 12 comprises a main cylinder 121 in the shape of a cylinder and a main roller shaft 122. The main cylinder 121 is in the shape of a cylinder, is arranged on the top of the discharging mounting table 50, extends in the vertical direction, and the end face is parallel to the horizontal plane.

[0046] The main roller shaft 122 is arranged at the axis of the main cylinder 121 and is fixedly connected with the main roller 12.

[0047] In this embodiment, the main roller driving mechanism 3 is a motor, the output end of which is fixedly connected with the main roller shaft 122 and can drive the main roller shaft 122 to rotate, thereby driving the main cylinder 21 to rotate.

[0048] The tensioning roller 13 is arranged at a position on one side of the main roller 12, and the axis line thereof is substantially parallel to the axis line of the main roller 12.

[0049] The abrasive belt 14 is sleeved outside the main cylinder 121 of the main roller 12 and the tensioning roller 13, and the outer side surface thereof is a rough surface for contacting the grains and thereby performing grinding on the grains. In addition, the abrasive belt deflection adjusting device can also be arranged at the tensioning roller 13 to prevent the abrasive belt from deviating, and the specific structure and working principle thereof can adopt the patent CN 202021909873.1 previously applied by the applicant, which will not be described here again.

[0050] As shown in Figure 3 , Figure 4 , the feeding mechanism 4 is arranged on the top of the main cylinder 121 and is in the shape of a conical table with a small upper part and a large lower part. The inside of the feeding mechanism 4 is provided with a plurality of feeding passages formed by the partition plates. The top of the feeding mechanism 4 is connected with the silo 2 through a feeding pipeline, so that the grains in the silo 2 can enter the feeding mechanism 4 and be divided into multiple paths by the feeding passages. In this embodiment, the part of the feeding mechanism 4 connected with the feeding pipeline is provided with a feeding valve (not shown in the figure).

[0051] A plurality of grinding chambers 15 close to the abrasive belt 14 are arranged on the outer side of the circumferential surface of the main cylinder 121 and are uniformly arranged in the circumferential direction. In this embodiment, the number of the grinding chambers 15 and the number of the feeding passages are both 12, and each grinding chamber 15 corresponds to one feeding passage.

[0052] Figure 6 is a structure diagram of the grinding chamber of the first embodiment of the present application.

[0053] As shown in Figure 6 , the grinding chamber 15 is used for accommodating the grains and grinding the grains in cooperation with the abrasive belt 14 and has a grinding cavity 151, a discharging passage 152, a feeding port 153 and a discharging port 154.

[0054] The grinding cavity 151 is a channel structure extending in the vertical direction, has three flat plates connected in sequence, the structure formed by the three flat plates has a trapezoidal cross section, the longer base of the trapezoid is an opening, the opening faces the abrasive belt 14, and thus can cooperate with the abrasive belt 14. The bottom of the grinding cavity 151 is a grinding opening, and the top is a grinding cavity inlet.

[0055] The discharge channel 152 is arranged at the bottom of the grinding cavity 151, and the upper end of the discharge channel 152 is in communication with the bottom end of the grinding cavity 151. At the same time, the discharge channel 152 is arranged to be inclined relative to the grinding cavity 151, that is, the length direction of the discharge channel 152 and the length direction of the grinding cavity 151 form an included angle, and the included angle is an obtuse angle.

[0056] The feed inlet 153 is arranged at the top of the grinding cavity 151, and the upper part of the feed inlet 153 is in communication with the bottom end of the corresponding feed passage, and the lower part is in communication with the top end of the grinding cavity 151.

[0057] The discharge port 154 is arranged at the bottom of the discharge channel 152 and is in communication with the bottom end of the discharge channel 152.

[0058] In the embodiment, the discharge mechanism 5 is used for discharging the ground grains in the grinding chamber 15, and includes a plurality of grinding cavity discharge assemblies, a discharge adjusting assembly, and a discharge mounting table 50 accommodating the grinding cavity discharge assemblies and the discharge adjusting assembly. The discharge mounting table 50 is arranged on the base 111 and has a hollow columnar shape with a circular arc cross section having an arc greater than 60°. The number of the grinding cavity discharge assemblies is the same as that of the grinding chamber 15, that is, 12, and each grinding cavity discharge assembly corresponds to the grinding chamber 15.

[0059] Figure 7 FIG. 1 is a perspective view of a grinding cavity discharge assembly of the embodiment.

[0060] As shown in FIG. 1, each grinding cavity discharge assembly includes an outlet portion 51, a rotating plate 52, a reset member 53, and a poking member 54. Figure 7 The outlet portion 51 has a rectangular frame shape and is arranged at a lower end position in the grinding chamber 15. The upper part of the outlet portion 51 is in communication with the grinding cavity 151, and the lower part is in communication with the discharge channel 152.

[0061] The rotating plate 52 is a flat plate that can rotate about a horizontal axis and has a rotating end rotatably arranged in the outlet portion 51 close to the inner wall and a free end opposite to the rotating end. Specifically, the rotating end is rotatably arranged in the outlet portion 51 close to the inner wall through a pin shaft.

[0062] The reset member 53 is a torsion spring arranged on the pin shaft of the rotating plate 52 and provides a spring force to the rotating plate 52 to make the rotating plate 52 tightly contact the outlet portion 51.

[0063] The reset member 53 is a torsion spring arranged on the pin shaft of the rotating plate 52 and provides a spring force to the rotating plate 52 to make the rotating plate 52 tightly contact the outlet portion 51.

[0064] The toggle member 54 is arranged below the rotating plate 52 near one side of the rotating end, and can contact the lower surface of the rotating plate 52 and push the rotating plate 72 to rotate towards the edge of the outlet part 51.

[0065] Figure 8 is a perspective view of the cooperation state of the grinding chamber and the discharge adjusting assembly in the embodiment of the application, Figure 8 The figure shows the cooperation state of one grinding chamber 15 and the discharge adjusting assembly. Figure 9 is a sectional view of the cooperation state of the grinding chamber and the discharge adjusting assembly in the embodiment of the application.

[0066] As shown in Figure 8 , Figure 9 , the discharge adjusting assembly comprises a rotating disc 55, a coupling shaft 56, a push rod 58, a proximity switch 1 59, a proximity switch 2 60 and a driving member 57.

[0067] The rotating disc 55 is installed at the bottom of the main roller 12, and its axis is coincident with the axis of the main roller 121. The edge of the rotating disc 55 is provided with a plurality of notches 55a, each of which corresponds to the position of the toggle member 54 and is engaged with the toggle member 54.

[0068] When the rotating disc 55 rotates clockwise or counterclockwise, the toggle member 54 can be pushed to move to the left or right in Figure 9 , so as to increase or decrease the angle formed between the rotating plate 52 and the outlet part 51, increase or decrease the opening formed between them, and increase or decrease the flow rate of the grain flowing out of the grinding cavity 151. That is, the discharge flow rate can be adjusted.

[0069] The coupling shaft 56 is fixedly connected to the bottom of the rotating disc 55 and extends downward from the bottom surface of the rotating disc 55.

[0070] The push rod 58 is arranged at one side of the coupling shaft 56 and connected to the coupling shaft 56. The push rod 58 can push the coupling shaft 56 to swing in the horizontal direction, so as to drive the rotating disc 55 to rotate clockwise or counterclockwise in the horizontal plane.

[0071] The driving member 57 is a motor, which can drive the push rod 58 to move and in turn push the coupling shaft 56 to move. Specifically, a stepping motor can be used to constitute the driving member 57.

[0072] The proximity switch one 59 is arranged below the rotating disc 55, and corresponds to the position of the shaft 56 when the rotating plate 52 is completely closed to the outlet part 51 (i.e. the opening between them is closed), and can sense the distance between the shaft 56 and the proximity switch one 59 and form a corresponding electrical signal. Since the opening between the rotating plate 52 and the outlet part 51 actually forms a grain outlet opening in the grinding cavity 151, for the sake of description, the opening between the rotating plate 52 and the outlet part 51 is referred to as the grinding opening.

[0073] The proximity switch two 60 is arranged below the rotating disc 55, and corresponds to the position of the shaft 56 when the rotating plate 52 is farthest away from the outlet part 51 (i.e. the grinding opening is completely open), and can sense the distance between the shaft 56 and the proximity switch two 60 and form a corresponding electrical signal.

[0074] That is, the positions of the proximity switch one 59 and the proximity switch two 60 correspond to the start and end of the stroke of the rotating plate 52 from completely closed to completely open, and the electrical signals of the two can be used to determine the current position of the shaft 56, the degree of rotation of the rotating disc 55, and further obtain the opening degree of the grinding opening and perform feedback control according to the opening degree.

[0075] The discharging mounting table 50 is internally provided with a plurality of discharging passages (not shown in the figure), which are 12 in number, distributed in a circumferential manner, and correspond to the positions of the respective whitening chambers 15. Each discharging passage is approximately tubular, and its upper end is connected to the lower end of the outlet part 51, so that the grain in the whitening cavity 151 can flow downward to the discharging passage through the outlet part 51.

[0076] As shown in FIG. Figure 3 The lower end of each discharging passage is connected to the discharging pipeline 16, so that the ground grain in the whitening chamber 15 can flow into the discharging pipeline 16. The lower end of the discharging pipeline 16 is connected to the input port of the other conveying mechanism 30, so that the conveying mechanism 30 can further convey the grain output by the discharging pipeline 16 to the downstream equipment.

[0077] In addition, in the present embodiment, the lower end of the discharging mounting table 50 is also provided with a bran discharge passage 17, the upper end of which is connected to the bottom of the discharging mounting table 50, and the bran formed after the sand belt 14 is ground directly falls into the discharging mounting table 50 and is collected and discharged by the bran discharge passage 17. A fan 18 is also arranged on the bran discharge passage 17, which is used to draw air from the bran discharge passage 17 to facilitate the discharge of the bran in the bran discharge passage 17.

[0078] The mill current value acquisition unit 6 is configured to acquire the mill current of the main roller driving mechanism 3 during operation, and includes a current value acquisition unit, a no-load current value storage unit, and a mill current value calculation unit.

[0079] The current value acquisition unit is configured to acquire the current working current value of the main roller driving mechanism 3 during operation. In the embodiment, the current value acquisition unit is arranged in the frequency converter of the motor of the main roller driving mechanism 3, so as to directly acquire the current working current value.

[0080] The no-load current value storage unit stores the no-load current value. In the embodiment, the no-load current value storage unit is a temporary storage unit. After the equipment is powered on, the main roller driving mechanism 3 is operated for a short time (for example, 3-5 seconds) before the mill starts (i.e., before the feed valve is opened), which is equivalent to operating for a short time in the no-load state without grains. The current working current value of the main roller driving mechanism 3 acquired by the current value acquisition unit during this period (which can be the average value of the current working current value during this period) is the no-load current value, and the no-load current value storage unit temporarily stores the no-load current value.

[0081] The mill current value calculation unit is configured to calculate the mill current value. Specifically, the mill current value calculation unit subtracts the no-load current value stored in the no-load current value storage unit from the current working current value obtained by the current value acquisition unit at different times during the milling process, so as to obtain the current mill current value at different times.

[0082] The discharge control unit 7 is configured to control the operation of the discharge mechanism 5, i.e., to control the driving member 57 to drive the rotating disc 55 to rotate through the shaft coupling 56 and the push rod 58, so as to move the poking member 54 to increase or decrease the opening degree of the mill opening.

[0083] The rotating speed control unit 8 is configured to control the rotating speed of the main roller driving mechanism 3.

[0084] The comparison and judgment unit 9 is configured to judge the size relationship between the current mill current value obtained by the mill current value acquisition unit 6 and the predetermined standard current value, which serves as the control basis for the discharge control unit 7 and the rotating speed control unit 8. The specific control process will be described in detail below in combination with the related working principle of the control device 20. In addition, in the embodiment, the judgment criterion of the comparison and judgment unit 9 is that the difference between the values does not exceed 5%, which is considered equal.

[0085] The equipment control unit 91 is configured to control the operation of each component in the milling equipment 10, and the equipment communication unit 92 is configured to exchange data with other equipment (mainly the control device 20).

[0086] As shown in FIG. 1, the milling equipment 10 includes a main roller driving mechanism 3, a discharge mechanism 5, a mill current value acquisition unit 6, a discharge control unit 7, a rotating speed control unit 8, a comparison and judgment unit 9, an equipment control unit 91, and an equipment communication unit 92. Figure 1As shown, the control device 20 comprises a plurality of flow detection units 21 and a series control device 22.

[0087] The flow detection units 21 are grain flow detectors, respectively installed on the discharge pipes 16 of the respective milling devices 10, and are capable of measuring the discharge flow of the discharge pipes 16 of the respective milling devices 10. In the present embodiment, the flow detection unit 21 installed on the discharge pipe 16 of the first milling device 10 is referred to as the first flow detection unit 21, and the flow detection units 21 of the second and third milling devices 10 are referred to as the second flow detection unit 21 and the third flow detection unit 21, respectively.

[0088] The series control device 22 comprises a conveying flow acquisition unit 221, a processing flow acquisition unit 222, a matching determination unit 223, a processing adjustment unit 224, a series control unit 225, an operation switch 226, and a series communication unit 227.

[0089] The conveying flow acquisition unit 221 is electrically connected to each flow detection unit 21, and is configured to acquire the flow detected by each flow detection unit 21 as a conveying flow. For example, the flow acquired by the first flow detection unit 21 is the flow of the milled grain conveyed from the first milling device 10 to the second milling device 10, which is referred to as the first conveying flow. Similarly, the flow acquired by the second flow detection unit 21 is the flow conveyed from the second milling device 10 to the third milling device 10, which is referred to as the second conveying flow. In addition, the flow acquired by the third flow detection unit 21 is the flow output from the third milling device 10 to a downstream processing device (e.g., a polishing device, not shown in the figure), which is referred to as the output flow.

[0090] In the present embodiment, the processing device upstream of the first milling device 10 is a grain hulling device (not shown in the figure), and the flow detection unit 21 installed on the discharge pipe of the grain hulling device represents the conveying flow input from the grain hulling device to the first milling device 10, which is referred to as the input flow.

[0091] The processing flow acquisition unit 222 is configured to acquire the current processing flow of each milling device 10. In the present embodiment, the flow of the discharge after the milling processing of each milling device 10 is equivalent to the processing flow thereof, and thus is represented by the flow detected by the flow detection unit 21. Specifically, the flow detected by the first flow detection unit 21 represents the current processing flow of the first milling device 10, the flow detected by the second flow detection unit 21 represents the current processing flow of the second milling device 10, and the flow detected by the third flow detection unit 21 represents the current processing flow of the third milling device 10.

[0092] The matching judging unit 223 is configured to judge whether the current processing flow of each grinding device 10 matches the conveying flow of the adjacent upstream device. Specifically, the judgment of the matching judging unit 223 includes three parts: judging whether the current processing flow of the first grinding device 10 matches the input flow; judging whether the current processing flow of the second grinding device 10 matches the first conveying flow; and judging whether the current processing flow of the third grinding device 10 matches the second conveying flow. In the embodiment, the reference for judging the matching is that the numerical difference between the two flows is within ±5%.

[0093] The processing adjusting unit 224 is configured to make the grinding device 10 make corresponding adjustment when the matching judging unit 223 judges that the matching is not met. In the embodiment, the specific adjustment mode of the processing adjusting unit 224 is to form and send a corresponding adjustment signal to the grinding device 10 that needs to be adjusted, including: when it is judged that the current processing flow of a grinding device 10 is too high and does not match the corresponding conveying flow (i.e. the current processing flow is higher than 105% of the conveying flow of the adjacent upstream), a processing reduction signal is sent to the grinding device 10; when it is judged that the current processing flow is too low and does not match the corresponding conveying flow (i.e. the current processing flow is lower than 95% of the conveying flow of the adjacent upstream), a processing increase signal is sent to the grinding device 10. In addition, when it is judged that the matching is met, a processing maintenance signal is formed and sent to make the grinding device 10 maintain the current processing flow.

[0094] The series control unit 225 is configured to coordinately control the operation of each device, including the grinding device 10 and other devices upstream and downstream.

[0095] The operation switch 226 is configured to generate an operation start signal or an operation stop signal. In the embodiment, the operation switch 226 is a physical button switch, which can generate a corresponding electrical signal when pressed, so that the series control unit 225 can coordinately control the operation of each device as a whole according to the corresponding electrical signal.

[0096] The series communication unit 227 is configured to perform communication connection between the series control device 22 and other devices.

[0097] The following describes the corresponding actions inside the grinding device 10 after receiving the different processing signals through the grinding device 10.

[0098] When a grinding device 10 receives a processing reduction signal, a processing increase signal or a processing maintenance signal, the discharge control unit 7 and the rotating speed control unit 8 cooperate with each other to make comprehensive adjustment based on the grinding current value obtained by the grinding current value obtaining unit 6 and the judgment result of the comparison judging unit 9.

[0099] Specifically, during the operation of the grinding device 10, the grinding current value acquisition unit 6 acquires the grinding current value in real time. The comparison and judgment unit 9 has a standard value storage unit storing the standard current value, and compares the grinding current value acquired by the grinding current value acquisition unit 6 with the standard current value in sequence to determine the size relationship between them.

[0100] When the reduction processing signal is received, the discharge control unit 7 first controls the discharge mechanism 5 to reduce the opening degree of the grinding opening, so that the discharge flow rate is reduced, until the current processing flow rate matches the corresponding conveying flow rate. At this time, due to the reduction of the discharge flow rate, the grinding time of the grain in the grinding chamber 15 is prolonged, the overall amount of the retained grain is increased, the pressure in the grinding chamber 15 is increased to a certain extent, resulting in an increase in the working load of the main roller driving mechanism 3, and the grinding current value is also increased. When the comparison and judgment unit 9 determines that the grinding current value acquired at this time is greater than the standard current value (i.e., greater than 105% of the standard current value), the speed control unit 8 controls the main roller driving mechanism 3 to reduce the speed, so that the intensity of the tumbling and grinding of the grain in the grinding chamber 15 is reduced, the pressure in the grinding chamber 15 is correspondingly reduced, the working load of the main roller driving mechanism 3 is reduced, and the grinding current value is also reduced; when the grinding current value is reduced to the standard current value (i.e., within the range of ±5% of the standard current value), the grinding degree of the grain in the grinding chamber 15 is just right.

[0101] In addition, when the increase processing signal is received, the control actions of the discharge control unit 7 and the speed control unit 8 are opposite to those when the reduction processing signal is received; when the maintenance processing signal is received, the discharge control unit 7 maintains the current discharge flow rate, and when the grinding current still cannot meet the standard current value in this maintenance state, the speed control unit 8 controls the main roller driving mechanism 3 to change the speed, so that the grinding current value is further changed to reach the standard current value.

[0102] Therefore, through the cooperation of the discharge control unit 7 and the speed control unit 8, the grinding current value acquired by the grinding current value acquisition unit 6, and the comparison and judgment of the comparison and judgment unit 9, each grinding device 10 can ensure that the difference between the current processing flow rate and the corresponding conveying flow rate is within the predetermined range of ±5%, and can also ensure that the grinding current value is maintained at the standard current value, so that both the imbalance of the grain processing amount and the processing quality of each grinding device can be ensured to meet the standard.

[0103] In this embodiment, when the system is powered on and starts to work, the main roller driving mechanism 3 in each grinding device 10 first idles respectively, so that the current value acquisition unit 61 acquires the no-load current and the no-load current value storage unit 62 stores it. Subsequently, the grain is fed into the most upstream device (in this embodiment, the grain husking device), and in this case, when the series control unit 225 receives the operation start signal from the operation switch 226, the entire system can start to work.

[0104] Figure 10 is an action flowchart of the milling process of embodiment one of the present application.

[0105] As shown in Figure 10 , the working process of the serial type multi-device automatic milling system 100 of the present embodiment is as follows.

[0106] Step S1, the conveying flow acquisition part 221 acquires the conveying flow from each flow detection unit 21, and then enters step S2.

[0107] Step S2, the serial control part 225 judges whether there is a corresponding conveying flow for the adjacent upstream device of each milling device 10, and when it judges that there is, it means that the milling device 10 can start working, and then enters step S2.

[0108] Step S3, the serial control part 225 sends a start milling signal to the milling device 10 whose adjacent upstream device has a conveying flow, and then enters step S4.

[0109] Step S4, in the milling device 10 that receives the start milling signal, the device control part 91 controls the feed valve to open to allow the grain to enter each milling chamber 15, and controls the main roller driving mechanism 3 to start working, and performs an initial milling on the grain entering each milling chamber 15, and then enters step S5.

[0110] Step S5, it is judged whether the initial milling time is reached, and if so, it enters step S6.

[0111] Step S6, the device control part 91 controls the discharge mechanism 5 to open an initial milling opening to allow the milled grain in the milling chamber 15 to be discharged, and then enters step S7.

[0112] Step S7, the conveying flow acquisition part 221 and the processing flow acquisition part 222 acquire the detection results from each flow detection unit 21, and then enter step S8.

[0113] Step S8, the matching judgment part 223 judges whether the current processing flow matches the corresponding conveying flow according to the detection results acquired by each flow detection unit 21, and when it judges that the current processing flow is too high to match, it enters step S9, when it judges that the current processing flow is too low to match, it enters step S11, and when it judges that it matches, it enters step S13.

[0114] Step S9, the processing adjustment part 224 forms a processing signal to reduce and sends it to the corresponding milling device 10, and then enters step S10.

[0115] Step S10, in the grinding device 10 receiving the reducing processing signal, the discharge control part 7 controls the discharge mechanism 5 to reduce the grinding opening so as to reduce the discharge flow, and then returns to step S8.

[0116] Step S11, the processing adjustment part 224 forms the promoting processing signal and sends to the corresponding grinding device 10, and then enters step S12.

[0117] Step S12, in the grinding device 10 receiving the reducing processing signal, the discharge control part 7 controls the discharge mechanism 5 to increase the grinding opening so as to increase the discharge flow, and then returns to step S8.

[0118] Step S13, the grinding current value acquisition part 6 acquires the grinding current value of the grinding device 10, and then enters step S14.

[0119] Step S14, the comparison judgment part 9 judges whether the grinding current value acquired in step S6 is greater than, equal to or less than the standard current value, enters step S15 when judged as greater than, enters step S16 when judged as less than, and enters step S17 when judged as equal to.

[0120] Step S15, the rotating speed control part 8 controls the main cylinder driving mechanism 3 to reduce the rotating speed, and then returns to step S13.

[0121] Step S16, the rotating speed control part 8 controls the main cylinder driving mechanism 3 to promote the rotating speed, and then returns to step S13.

[0122] Step S17, the series control part 226 judges whether the running stop signal is received, returns to step S7 when not received, and enters step S18 when received.

[0123] Step S18, the series control part 225 controls each grinding device 10 to perform the running stop action in sequence from upstream to downstream, and then enters the end state. Specifically, the running stop action includes: the discharge mechanism 5 is first closed, the grains in the whitening chamber 15 are allowed to be ground for a period of time (3s-5s), and then the discharge mechanism 5 is completely opened to allow the grains to be discharged completely. Thus, after each grinding device 10 performs the stop action in sequence, the corresponding whitening chamber 15 is emptied, and the whole series type multi-device automatic grinding system 100 completes a grinding work.

[0124] Effects of the embodiment

[0125] According to the series type multi-device automatic grinding system provided by the embodiment, the flow detection unit can detect the conveying flow of the adjacent device upstream of each grinding device, the matching determination part can determine whether the conveying flow matches the current processing flow of the grinding device, and the processing adjustment part can control corresponding adjustment when they do not match, so that the processing flow of the grinding device can be adjusted and matched according to the actual conveying flow (i.e. the flow input into the grinding device) upstream of each grinding device, and the problem of unbalanced processing amount can be avoided.

[0126] In the embodiment, the flow detection unit is arranged in the discharging mechanism, and the detection result is the discharging flow, which can be used as the current processing flow of the grinding device and the conveying flow to the adjacent downstream device, so that the purpose of overall control can be achieved without arranging too many flow detection units.

[0127] In the embodiment, when the current processing flow is too high and does not match the conveying flow, the processing adjustment part sends a processing reduction signal, and the discharging control part controls the discharging mechanism to reduce the grinding opening to reduce the discharging flow, and vice versa, the processing adjustment part sends a processing improvement signal, and the discharging control part controls the discharging mechanism to increase the grinding opening to increase the discharging flow, so that the discharging flow (i.e. the current processing flow) can be directly adjusted, and the speed of adjustment to balance is fast.

[0128] Further, the embodiment also has a grinding current acquisition part, a comparison determination part and a rotating speed control part, so that after the discharging flow is adjusted, the rotating speed control part can adjust the rotating speed according to the comparison result of the current grinding current value and the standard current value, so that the grinding current value meets the standard current value, and the processing quality of each grinding device can also meet the standard while the processing flow is balanced.

[0129] <Embodiment Two>

[0130] In the embodiment, the same structure as in Embodiment One is given the same number and the same description is omitted.

[0131] Figure 11 is a structural block diagram of the series type multi-device automatic grinding system of Embodiment Two of the application.

[0132] As shown in Figure 11 , the series type multi-device automatic grinding system 300 of the embodiment is mainly different from Embodiment One in that the system further includes an operation terminal 30 for human-computer interaction operation of the operator, and the series control device 22 further includes a standard current storage part 229 and a retrieval acquisition part 228.

[0133] Specifically, the standard current storage unit 229 stores standard current values of different milling varieties and corresponding different milling devices 10. Specifically, the milling varieties include a plurality of grain categories and different grain varieties corresponding to the same grain category. For example, the milling varieties can include glutinous rice, indica rice, japonica rice, brown rice, and wheat, etc.; the standard current values are the optimal milling current values of each milling device 10 corresponding to each milling variety, which can be obtained by actual testing of different milling varieties before delivery, and then recorded and stored when the device is delivered. Generally, the optimal milling current of the plurality of milling devices 10 connected in series is different, so that the standard current values of the plurality of milling devices 10 corresponding to each milling variety are obtained, for example, the standard current values of the first, second, and third milling devices 10 corresponding to “glutinous rice” can be 5V, 4.5V, and 5V, respectively.

[0134] The operation terminal 30 has an input display unit 31, a screen storage unit 32, an operation communication unit 33, and an operation control unit 34.

[0135] The screen storage unit 32 stores a milling variety selection screen for displaying the milling varieties stored in the standard current storage unit 227, so as to allow the operator to select the current milling variety to be milled.

[0136] The input display unit 31 is used to display the above-mentioned screen stored in the screen storage unit 32, so as to realize the corresponding human-computer interaction (i.e. selecting the current milling variety) by the operator.

[0137] The operation communication unit 33 is used to realize the communication connection between the operation terminal 30 and other devices, for example, the communication connection between the control device 20, and the operation control unit 34 is used to control the work of the above-mentioned units, which can be in the form of a computer installed with a corresponding control program.

[0138] The retrieval acquisition unit 228 is used to retrieve and acquire a series of standard current values corresponding to the current milling variety selected by the operator from the standard current storage unit 229 after receiving the current milling variety. Then, the operation communication unit 33 sends the standard current values to the milling devices 10 correspondingly (for example, the standard current value of the first milling device 10 is sent to the first milling device 10). The standard value storage unit in the comparison and judgment unit 9 stores the standard current value after receiving the standard current value, so as to be used by the comparison and judgment unit 9 in the comparison process of the milling current value.

[0139] In the embodiment, the standard current storage unit stores the standard current values corresponding to different grinding varieties, so that the grinding equipment can be controlled according to the optimal grinding current of different grinding varieties, and the grinding equipment can work under the optimal grinding current condition in different grinding varieties. In addition, the standard current storage unit also stores the standard current values of different grinding equipment corresponding to the same grinding variety, so that the grinding equipment with different processing sequences can also work under the corresponding optimal grinding current condition, so that the overall grinding quality is optimized.

[0140] The above embodiments are used to illustrate the protection scope of the present application, but the protection scope of the present application is not limited to the range described in the above embodiments.

[0141] For example, in the embodiment, the rotating disc cooperates with the poking member, the rotating disc is driven to rotate by the driving member, the poking member is moved to change the angle of the rotating plate and the grinding opening angle, and the discharge flow is adjusted. In the present application, the grinding cavity discharge assembly can be simplified as a single electric control valve (i.e. the angle of the rotating plate is changed by a motor or the like), so that the discharge adjusting assembly can be cancelled, the corresponding electric signal is sent to the electric control valve by the processing control unit to change the angle of the electric control valve, i.e. the grinding opening angle.

[0142] In the embodiment, the flow detection unit is arranged in the discharge pipeline of the discharge mechanism, but in the present application, it can also be arranged at the feeding mechanism (such as the feeding valve, the inlet of the hopper, etc.); in addition, the flow detection unit can also be arranged in the connecting mechanism, for example, when the grain elevator is connected with the grinding equipment by a pipeline, the flow detection unit can be arranged in the pipeline for connection.

Claims

1. A series-connected multi-device automatic milling system for sequentially milling grains, characterized in that, include: At least two milling machines are used to mill the grain; as well as Control equipment for controlling the grinding process. The grinding equipment includes a main drum, a main drum drive mechanism for driving the main drum to rotate, an abrasive belt driven by the main drum, multiple whitening chambers for accommodating the grain and cooperating with the abrasive belt to achieve grinding, a feeding mechanism for introducing the grain into the whitening chambers, and a discharging mechanism for discharging the grain after grinding in the whitening chambers. The grinding equipment is connected in series, and the discharge mechanism of the upstream grinding equipment is connected to the feeding mechanism of the downstream grinding equipment through a connecting mechanism. The control device includes: At least one flow detection unit, disposed in any one or more of the connecting mechanism, the feeding mechanism, and the discharging mechanism, is used to detect the flow rate of the grain being conveyed from the upstream milling device to the downstream milling device; and The series control device has: The delivery flow acquisition unit acquires the delivery flow in real time from the flow detection unit; The processing flow acquisition unit is used to acquire the current processing flow of each of the milling devices for milling the grain; The matching determination unit determines whether the current processing flow rate of the grinding equipment matches the conveying flow rate at the upstream position of the grinding equipment; and The processing adjustment unit controls the change of the grinding opening angle at the lower end of the whitening chamber when the matching judgment unit determines that there is a mismatch, thereby adjusting the current processing flow rate to match the conveying flow rate. The main roller drive mechanism is a motor. The grinding equipment also has: The grinding current value acquisition unit is used to acquire the current grinding current value in real time based on the working current value of the main drum drive mechanism during the grinding process. The comparison and judgment unit is used to determine the magnitude relationship between the current grinding current value and the predetermined standard current value when the matching judgment unit determines that a match has been made; The speed control unit is used to control the speed of the main roller drive mechanism. When the comparison and judgment unit determines that the current grinding current value is greater than the standard current value, the speed control unit controls the main drum drive mechanism to reduce the speed. When the comparison and judgment unit determines that the current grinding current value is less than the standard current value, the speed control unit controls the main drum drive mechanism to increase the speed.

2. The series-connected multi-device automatic grinding system according to claim 1, characterized in that: in, The grinding equipment has a discharge control unit. When the matching judgment unit determines that the current processing flow rate is too high and does not match the conveying flow rate, the processing adjustment unit sends a reduction processing signal to the grinding equipment corresponding to the processing flow rate. When the matching judgment unit determines that the current processing flow rate is too low and does not match the delivery flow rate, the processing adjustment unit sends an increase processing signal to the grinding equipment corresponding to the processing flow rate. The discharge control unit controls the discharge mechanism to reduce the discharge flow rate according to the reduction processing signal, or controls the discharge mechanism to increase the discharge flow rate according to the increase processing signal.

3. The series-connected multi-equipment automatic grinding system according to claim 2, characterized in that: in, The discharge mechanism includes: The grinding chamber discharge assembly has an outlet portion disposed at the lower end of the grinding chamber, a rotating plate rotatably mounted in the outlet portion, and a toggle member capable of driving the rotating plate to rotate. The discharge adjustment assembly includes a turntable capable of rotating the actuating member to change the angle of the rotating plate, and a driving member for driving the turntable to rotate. The discharge control unit controls the drive component to drive the turntable to rotate, thereby changing the angle of the rotating plate and thus changing the grinding opening angle.

4. The series-connected multi-equipment automatic grinding system according to claim 2, characterized in that: in, The discharge mechanism includes multiple discharge valves located at the lower end of the whitening chamber, and these discharge valves are electrically controlled valves. The discharge control unit changes the mill opening angle by controlling the angle of the electrically controlled valve.

5. The series-connected multi-equipment automatic grinding system according to claim 1, characterized in that: in, The series control device further includes: The standard current storage unit stores the standard current values ​​for different milling types and corresponding milling equipment; and The retrieval unit is used to retrieve the corresponding standard current value from the standard current storage unit according to the current milling variety.

6. The series-connected multi-device automatic grinding system according to claim 5, characterized in that, Also includes: The operating terminal has: The screen storage unit stores a screen for selecting the milling variety stored in the standard current value storage unit. The input display unit is used to display the milling variety selection screen so that the operator can select the current milling variety.

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