CN115805114A - Automatic grinding equipment and automatic grain processing system - Google Patents

Abstract

The invention provides a low-cost grain processing system capable of realizing real-time feedback automatic control, wherein automatic grinding equipment comprises: equipment and the controlgear mill, mill equipment have main cylinder, drive main cylinder pivoted main roller actuating mechanism, by the abrasive band of main cylinder drive, hold cereal and thereby realize a plurality of whitening chambers that mill and carry out the discharge mechanism of the ejection of compact to the cereal after the whitening chamber is milled with the abrasive band cooperation, main roller actuating mechanism is the motor, the controlgear includes: a standard current value storage part for storing a preset standard milling current value; a grinding current value obtaining part for continuously obtaining the current grinding current value of the main roller driving mechanism in real time in the grinding process of the grains; a comparison judgment part for continuously judging the current value and the standard milling current value; and a rotation speed control unit for controlling the rotation speed of the main drum drive mechanism during operation.

Description

Automatic grinding equipment and automatic grain processing system

Technical Field

The invention belongs to the field of grain processing machinery, and particularly relates to automatic grinding equipment for grinding grains and a grain automatic processing system comprising the automatic grinding equipment.

Background

In the grain processing process, milling treatment is often required, for example, grains are subjected to chaff removal to form brown rice, and the brown rice is subjected to milling to remove skin layers, embryos and the like to form polished rice.

In the prior art, all the operating parameters of the milling equipment are fixed values when the processing is started; after a period of processing, the operator samples and analyzes, and then adjusts the parameters according to the analysis result. Because the sampling analysis adjustment is carried out from time to time when needing operating personnel, consequently the processing procedure needs personnel on duty, comparatively consumes the manpower. Moreover, the manual judgment has the possibility of judgment errors, so that the product quality can fluctuate and even the quality can not reach the standard.

In addition, there are various disadvantages to the automatic control of the above-mentioned milling equipment, for example, if the automatic sampling equipment is used for automatic sampling, automatic analysis and automatic control, the cost is high, and the feedback is not real-time, so that the control action has a certain delay.

Disclosure of Invention

In order to solve the problems, the invention provides a low-cost grain processing system capable of realizing real-time feedback automatic control, which adopts the following technical scheme:

the invention provides automatic grinding equipment for grinding grains, which is characterized by comprising the following components: a milling device for milling the grain; and the controlgear for control the process of milling, wherein, mill the equipment and have main cylinder, drive main cylinder pivoted main cylinder actuating mechanism, the abrasive band that is driven by main cylinder, hold cereal and thereby realize a plurality of whitening chambers that mill and carry out the discharge mechanism of ejection of compact to the cereal after the whitening chamber is milled with the abrasive band cooperation, main cylinder actuating mechanism is the motor, and the controlgear includes: a standard current value storage part for storing a preset standard milling current value; a grinding current value obtaining part for continuously obtaining the current grinding current value of the main roller driving mechanism in real time in the grinding process of the grains; a comparison judgment part for continuously judging the current value and the standard milling current value; and a rotation speed control unit for controlling the rotation speed of the main drum drive mechanism during operation, the rotation speed control unit including: and when the current grinding current value is greater than the standard grinding current value, the main roller driving mechanism is controlled to reduce the rotating speed.

In the automatic milling equipment provided by the invention, the control device can also comprise: ejection of compact control part for thereby control discharge mechanism and change ejection of compact flow, include: and when the current grinding current value is larger than the standard grinding current value, the discharging flow is increased.

Further, wherein, the discharging mechanism can include: the milling cavity discharging component is provided with an outlet part arranged at the lower end in the milling chamber, a rotating plate rotatably arranged in the outlet part and a stirring part capable of pushing the rotating plate to rotate; ejection of compact adjusting part has thereby can promote to dial the carousel that the piece rotated the angle that changes the rotor plate and drive this carousel pivoted driving piece, thereby ejection of compact control portion rotates through control driving piece drive carousel and changes the opening angle of milling between rotor plate and the export department, and then changes ejection of compact flow.

In addition, as another scheme, the discharging mechanism can comprise a plurality of discharging valves arranged at the lower end of the whitening chamber, the discharging valves are electric control valves, and the discharging control part controls the grinding opening angle of the electric control valves so as to change the discharging flow.

In addition, the control device may further include: when the comparison judgment part judges that the current value is smaller than the standard milling current value, the main control part controls the discharge control part to reduce the discharge flow firstly, when the comparison judgment part still judges that the current value is smaller than the standard milling current value after preset time, the main control part controls the main roller driving mechanism to increase the rotating speed, when the comparison judgment part judges that the current value is larger than the standard milling current value, the main control part controls the discharge control part to increase the discharge flow firstly, and when the comparison judgment part still judges that the current value is larger than the standard milling current value after preset time, the main control part controls the main roller driving mechanism to reduce the rotating speed.

As another alternative, the control device may further include: the automatic grinding equipment is also connected with at least one other processing equipment in series, the capacity obtaining part obtains the processing capacity in unit time from the at least one other processing equipment as related capacity, the current capacity setting part sets a numerical range with a preset upper limit difference value and a preset lower limit difference value with the related capacity as a current capacity range according to the related capacity, when the comparison judgment part judges that the current value is smaller than the standard grinding current value, the main control part controls the discharge control part to reduce the discharge flow firstly, when the comparison judgment part judges that the current value is smaller than the standard grinding current value after the discharge flow reaches the lower limit of the current capacity range, the main control part controls the main roller driving mechanism to increase the rotating speed, when the comparison judgment part judges that the current value is larger than the standard grinding current value, the main control part controls the discharge control part to increase the discharge flow firstly, and when the comparison judgment part judges that the current value is larger than the standard grinding current value after the discharge flow reaches the upper limit of the current capacity range, the rotation speed control part controls the main roller driving mechanism to reduce the rotating speed.

In the automatic milling equipment provided by the invention, the milling current value acquiring part can comprise a no-load current value storage unit, a current value acquiring unit and a milling current value calculating unit, wherein the current value acquiring unit acquires the current of the no-load starting of the main roller driving mechanism as a no-load current value, the no-load current value storage unit stores the no-load current value, the current value acquiring unit acquires the current working current value of the main roller driving mechanism, and the milling current value calculating part subtracts the current working current value and the no-load current value to obtain the current milling current value.

In the automatic grinding equipment provided by the invention, the control device can further comprise a retrieval acquisition part, an input display part and a picture storage part, wherein the standard current value storage part is stored with a plurality of grinding types and standard grinding current values corresponding to the plurality of grinding types, the picture storage part is stored with a grinding type selection picture, the input display part displays the grinding type selection picture before the grinding processing is started so that an operator selects grains needing to be ground as the current grinding type, and the retrieval acquisition part retrieves the standard grinding current value storage part and acquires the grinding type matched with the current grinding type selected by the user and the corresponding standard grinding current value as the standard grinding current value of the current grinding processing.

The invention also provides an automatic grain processing system for processing grains including grinding, which is characterized by comprising the following steps: at least one automatic grinding device and other processing devices for processing other than grinding of the grains, wherein the automatic grinding device is connected with the other processing devices in series, and the automatic grinding device is any one of the automatic grinding devices.

Further, the number of the automatic grinding apparatuses may be plural, and the plural automatic grinding apparatuses are connected in series with each other.

Action and Effect of the invention

According to the automatic milling equipment provided by the invention, the milling current value acquisition part can acquire the current milling current corresponding to the milling degree of grains, the comparison judgment part can compare the current milling current with the standard milling current value, and the rotating speed control part can perform corresponding rotating speed control according to the comparison judgment result, so that the milling degree can be changed through rotating speed adjustment when the milling degree of grains is too deep or insufficient, and the grains are milled to the optimal degree all the time.

Drawings

Fig. 1 is a block diagram of an automatic grinding apparatus according to a first embodiment of the present invention;

FIG. 2 is a side view of the automatic milling apparatus according to the first embodiment of the present invention;

fig. 3 is a perspective view of an automatic grinding apparatus according to a first embodiment of the present invention;

figure 4 is a top view of a milling apparatus according to a first embodiment of the present invention;

FIG. 5 is a block diagram of a whitening chamber according to a first embodiment of the present invention;

figure 6 is a perspective view of a grinding chamber discharge assembly in accordance with an embodiment of the present invention;

figure 7 is a cross-sectional block diagram of the milling chamber discharge assembly in an embodiment of the present invention;

FIG. 8 is a perspective view of the whitening chamber and the discharge adjustment assembly in accordance with an embodiment of the present invention;

FIG. 9 is a sectional structure view of the whitening chamber and the discharging adjustment assembly in a matched state according to the embodiment of the present invention;

FIG. 10 is a flow chart of the operation of the automatic milling apparatus according to the first embodiment of the present invention;

fig. 11 is a block diagram of an automatic grinding apparatus according to a second embodiment of the present invention.

Reference numerals: the automatic milling apparatus 100, 400; a milling apparatus 10; a milling device 1; a frame 11; a base 111; a column 112; a main drum 12; a main cylinder 121; a main drum shaft 122; a tension roller 13; an abrasive belt 14; a whitening chamber 15; a milling chamber 151; a discharge channel 152; a feed port 153; a discharge port 154; a discharge conduit 16; a bran discharge passage 17; a fan 18; a stock bin 2; a main drum driving mechanism 3; a feeding mechanism 4; a discharging mechanism 5; a discharge mount 50; an outlet portion 51; a rotating plate 52; a restoring member 53; a toggle member 54; a turntable 55; the notches 55a; a coupling 56; a driving member 57; a push rod 58; a proximity switch one 59; a second proximity switch 60; a control device 20; an input display unit 21; a standard current value storage unit 22; a screen storage unit 23; a grinding current value threshold storage unit 24; a search acquisition unit 25; a grinding current value obtaining part 26; a current value obtaining unit 261; a no-load current value storage unit 262; a milling current value calculation unit 263; a comparison judging section 27; a rotational speed control unit 28; a discharge control unit 29; a main control unit 30; a capacity acquisition unit 31; the current capacity setting section 32.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.

< first embodiment >

The embodiment provides automatic grinding equipment for grinding grains.

Fig. 1 is a block diagram of an automatic grinding apparatus according to a first embodiment of the present invention, and fig. 2 is a side view of the automatic grinding apparatus according to the first embodiment of the present invention.

As shown in fig. 1 and 2, the automatic milling apparatus 100 includes a milling apparatus 10 and a control apparatus 20. The milling equipment 10 comprises a milling device 1, a silo 2, a main roller driving mechanism 3, a feeding mechanism 4 and a discharging mechanism 5. The silo 2 is disposed above the grinding device and is fixed by a support structure such as a support frame or a support column (not shown in the support structure diagram).

Fig. 3 is a perspective view of a milling apparatus according to a first embodiment of the present invention, and the structure below the bin 2 and the platform 200 is omitted in fig. 3.

As shown in fig. 1-3, the milling device 1 comprises a frame 11, a main drum 12, a tensioning drum 13, a sanding belt 14 and a plurality of whitening chambers 15.

Fig. 4 is a top view of the milling apparatus according to the first embodiment of the present invention, and fig. 4 omits the bin 2, the feeding mechanism 4, and the whitening chamber 15.

As shown in fig. 2 to 4, the frame 11 has a base 111, a pillar 112, and a top cover 113.

The base 111 has a rectangular plate shape and supports the entire milling apparatus 1.

As shown in fig. 2, in the present embodiment, the milling apparatus 10 is disposed on a platform 200 higher than the ground in a production shop, so that the base 111 is placed on the upper surface of the platform 200.

The number of the upright posts 112 is two, each of which is a hollow columnar structure with an approximately rectangular cross section, and the upright posts are arranged on the base 11 and respectively located at two adjacent corner positions of the base 111.

The top cover 113 is provided over the top ends of the two pillars 112 so as to cover the two pillars 112 (the top cover 113 is omitted in fig. 4).

The main drum 12 includes a main cylinder body 121 having a cylindrical shape and a main drum shaft 122. The main cylinder 121 is cylindrical, is arranged at the top of the discharging mounting table 50, extends in the vertical direction, and has an end surface parallel to the horizontal plane.

The main drum shaft 122 is inserted through the axis of the main drum body 121 and is fixedly connected to the main drum 12.

In this embodiment, the main roller driving mechanism 3 is a motor with an adjustable rotation speed, and an output end of the main roller driving mechanism is fixedly connected to the main roller shaft 122, and can drive the main roller shaft 122 to rotate, so as to drive the main roller body 21 to rotate.

The tension drum 13 is provided at a position on one side of the main drum 12 with its axis line substantially parallel to the axis line of the main drum 12.

The abrasive belt 14 is sleeved outside the main cylinder 121 of the main roller 12 and the tension roller 13, and the outer surface of the abrasive belt is a rough surface for contacting with grains to grind the grains. In addition, a belt deflection adjusting device may be further disposed at the tensioning roller 13 to prevent the belt from shifting, and the specific structure and operation principle thereof may adopt the patent CN 202021909873.1 previously applied by the present applicant, which is not described herein again.

As shown in fig. 2 and 3, the feeding mechanism 4 is disposed on the top of the main cylinder 121, and has a truncated cone shape with a small top and a large bottom, and a plurality of feeding passages partitioned by partition plates are disposed inside the feeding mechanism; the top of the feeding mechanism 4 is connected with the bin 2 through a feeding pipeline, so that the grains in the bin 2 can enter the feeding mechanism 4 and are divided into multiple paths by a feeding path. In this embodiment, a feeding valve (not shown) is provided at the connection part of the feeding mechanism 4 and the feeding pipeline.

A plurality of whitening chambers 15 which are uniformly arranged along the circumferential direction and are close to the abrasive belt 14 are arranged on the outer side of the abrasive belt 14 on the circumferential surface of the main cylinder 121. In this embodiment, the number of the whitening chambers 15 and the number of the feeding paths are 12, and each whitening chamber 15 corresponds to one feeding path.

Fig. 5 is a structural view of a whitening chamber according to a first embodiment of the present invention.

As shown in fig. 5, the whitening chamber 15 is used for containing grains and grinding the grains in cooperation with the sanding belt 14, and has a grinding chamber 151, a discharge passage 152, a feed inlet 153 and a discharge outlet 154.

The grinding chamber 151 is a channel structure extending in the vertical direction and has three plates connected in series, the cross section of the structure formed by the three plates is trapezoidal, and the longer bottom of the trapezoid is an opening facing the abrasive belt 14, so that the opening can be matched with the abrasive belt 14. The bottom of the milling chamber 151 is the milling opening and the top is the milling chamber inlet.

The discharge channel 152 is provided at the bottom of the grinding chamber 151, and its upper end communicates with the bottom end of the grinding chamber 151. Meanwhile, the discharging channel 152 is obliquely arranged relative to the milling chamber 151, that is, the length direction of the discharging channel 152 and the length direction of the milling chamber 151 form an included angle with each other, and the included angle is an obtuse angle.

The feed inlet 153 is provided at the top of the grinding chamber 151 with an upper portion communicating with the bottom end of the corresponding feed passage and a lower portion communicating with the top end of the grinding chamber 151.

The discharge hole 154 is formed at the bottom of the discharging channel 152 to communicate with the bottom end of the discharging channel 152.

In this embodiment, discharge mechanism 5 is used for carrying out the ejection of compact to the cereal after milling in whitening chamber 15, including a plurality of chamber ejection of compact subassemblies that mill, an ejection of compact adjusting part and hold chamber ejection of compact subassembly and the ejection of compact mount table 50 of milling. Wherein, ejection of compact mount table 50 sets up on base 111, is the hollow column of the circular arc that the radian is greater than 60 for the cross section, and the quantity of the chamber ejection of compact subassembly of milling is the same with whitening chamber 15, all is 12, and respectively with whitening chamber 15 corresponding.

Figure 6 is a perspective block diagram of an exemplary grinding chamber discharge assembly of the present invention and figure 7 is a cross-sectional block diagram of an exemplary grinding chamber discharge assembly of the present invention at the location of the grinding chamber discharge assembly.

As shown in figures 6 and 7, in the present embodiment, each milling chamber outfeed assembly comprises an outlet portion 51, a rotating plate 52, a return member 53 and a toggle member 54.

The outlet part 51 is formed in a rectangular frame shape and is provided at a lower end position in the whitening chamber 15, and an upper part thereof is communicated with the grinding chamber 151 and a lower part thereof is communicated with the discharging passage 152.

The rotating plate 52 is a flat plate rotatable about a horizontal axis, and has a rotating end rotatably mounted in the outlet portion 51 and a free end opposite to the rotating end. Specifically, the rotating end is rotatably mounted within the outlet portion 51 at a position near the inner wall by a pin.

The return member 53 is a torsion spring mounted on the pin of the rotating plate 52, which provides the rotating plate 52 with a spring force that urges the rotating plate 52 against the outlet portion 51.

The toggle member 54 is disposed below the rotating plate 52 on a side close to the rotating end, and the toggle member 54 can contact with the lower surface of the rotating plate 52 and push the rotating plate 72 to rotate in a direction close to the edge of the outlet portion 51.

Fig. 8 is a perspective view showing a state in which the whitening chamber and the discharging adjustment assembly are engaged in the embodiment of the present invention, and fig. 8 shows a state in which one whitening chamber 15 is engaged with the discharging adjustment assembly. FIG. 9 is a sectional view of the whitening chamber and the discharging adjustment assembly in a matched state in the embodiment of the invention.

As shown in fig. 8 and 9, the discharging adjustment assembly comprises a rotating disc 55, a coupling 56, a push rod 58, a first proximity switch 59, a second proximity switch 60 and a driving element 57.

The turntable 55 is mounted at the bottom of the main drum 12 with its axis coinciding with the axis of the main drum 121. The edge of the dial 55 is provided with a plurality of notches 55a, and each notch 55a corresponds to the position of the dial 54 and is fitted with the dial 54.

When the rotary disc 55 rotates clockwise or counterclockwise, the toggle piece 54 can be pushed to move to the left or right in fig. 9, so as to increase or decrease the angle formed between the rotating plate 52 and the outlet portion 51, and increase or decrease the opening formed therebetween, so that the flow rate of grain flowing out from the whitening chamber 151 is increased or decreased. Namely, the function of adjusting the discharge flow rate can be achieved.

A coupling 56 is fixedly coupled to the bottom of the turntable 55 and extends downwardly from the bottom surface of the turntable 55.

A push rod 58 is disposed on one side of the coupling 56 and connected to the coupling 56, and the push rod 58 can push the coupling 56 to swing in the horizontal direction, so as to drive the rotary plate 55 to rotate clockwise or counterclockwise in the horizontal plane.

The driving member 57 is a motor, and can drive the push rod 58 to move, so as to drive the coupling 56 to move. Specifically, a stepping motor may be employed to constitute the driving member 57.

The first proximity switch 59 is arranged below the rotating disc 55, corresponds to the position of the coupling 56 when the rotating plate 52 is completely attached to the outlet part 51 (i.e. the opening between the rotating plate and the coupling is closed), and can sense the distance between the coupling 56 and the first proximity switch and generate a corresponding electric signal. Since the opening between the rotating plate 52 and the outlet portion 51 actually forms an opening for the flow of the grains out of the grinding chamber 151, the opening formed between the rotating plate 52 and the outlet portion 51 will be referred to as a grinding opening hereinafter for the convenience of description.

The second proximity switch 60 is disposed below the rotary disk 55, corresponding to the position of the coupling 56 when the rotating plate 52 is farthest from the outlet portion 51 (i.e., the milling opening is fully opened), and is capable of sensing the distance between the coupling 56 and generating a corresponding electric signal.

That is, the positions of the first proximity switch 59 and the second proximity switch 60 respectively correspond to the starting point and the ending point of the stroke of the rotating plate 52 from the complete closing to the complete opening, and the current position of the coupling 56 and the rotation degree of the rotating disc 55 can be analyzed and judged according to the electric signals of the two, so as to obtain the opening and closing degree of the milling opening and perform feedback control according to the opening and closing degree.

The discharge table 50 is provided with a plurality of discharge passages (not shown) therein, the number of which is 12, the discharge passages are distributed in a circumferential manner and correspond to the positions of the respective whitening chambers 15. Each discharge passage is approximately tubular and has an upper end communicating with the lower end of the outlet portion 51, so that the grains in the whitening chamber 151 can flow downwardly through the outlet portion 51 into the discharge passage.

As shown in FIG. 2, an outfeed conduit 16 is also provided below the outfeed mounting station 50, and extends through the base 111 and then continues downwardly until it reaches below the platform 200. The lower end of each discharge channel is communicated with the discharge pipeline 16, so that the milled grains in the whitening chamber 15 can be converged into the discharge pipeline and then flow into other equipment through the discharge pipeline. In addition, a bran discharge channel 17 is further arranged below the discharging mounting table 50, the upper end of the bran discharge channel 17 is communicated with the bottom of the discharging mounting table 50, and bran powder formed by grinding the abrasive belt 14 directly falls into the discharging mounting table 50 and is collected by the bran discharge channel 17 and then discharged. The bran discharge channel 17 is also provided with a fan 18 for sucking air from the bran discharge channel 17 so as to promote the discharge of bran powder in the bran discharge channel 17.

As shown in fig. 1, the control device 20 includes an input display section 21, a standard current value storage section 22, a screen storage section 23, a grinding current value threshold value storage section 24, a search acquisition section 25, a grinding current value acquisition section 26, a comparison determination section 27, a rotation speed control section 28, a discharge control section 29, and a main control section 30.

The input display unit 21 is a touch display screen for human-computer interaction operation of an operator.

The standard current value storage unit 22 stores a plurality of types of milling products including a plurality of grain types and different grain types corresponding to the same grain type, and standard milling current values corresponding to the plurality of types of milling products. For example, the milled varieties may include glutinous rice, indica rice, japonica rice, brown rice, wheat, and the like.

The screen storage unit 23 stores human-computer interaction screens for displaying the input display unit 21, including a milling type selection screen and a milling state display screen. Wherein, the milling type selection screen is used to display the milling type stored in the standard current value storage part 23 so as to let the operator select the current milling type to be milled; the milling state display picture is used for displaying information such as the current value, the rotating speed and the like in the milling process.

The grinding current threshold value storage unit 24 stores a grinding current threshold value, which is the maximum value of the grinding current of the main drum drive mechanism 3 in a normal operation and indicates that the machine is not operating normally, for example, foreign matter is present when the grinding current threshold value is exceeded. In the present embodiment, the grinding current threshold storage unit 24 stores a plurality of grinding varieties and grinding current thresholds corresponding to the plurality of grinding varieties.

The search acquisition unit 25 is configured to acquire the standard current value and the grinding current value threshold value of the corresponding grinding material according to the selection of the operator. Specifically, when the operator selects a milling variety to be processed on the milling variety selection screen displayed on the input display unit 21, the search acquisition unit 25 searches the standard current value storage unit 22 for a corresponding standard current value as a current standard current value according to the milling variety, and searches the milling current value threshold 24 for a corresponding milling current value as a current milling current value threshold according to the milling variety.

The milling current value obtaining section 26 includes a present current value obtaining unit 261, a no-load current value storage unit 262, and a milling current value calculation unit 263.

The current value obtaining unit 261 is configured to obtain a current operating current value of the current main drum driving mechanism 3 during operation. In the present embodiment, the present current value acquiring unit 261 is provided in the inverter of the motor constituting the main drum driving mechanism 3, thereby directly acquiring the present operating current value.

The idle current value storage unit 262 stores the idle current value. In this embodiment, the idle current value storage unit 262 is a temporary storage unit, and after the main drum driving mechanism 3 is turned on, no grain to be milled is added within an initial predetermined time (for example, about 5 seconds), at this time, the current working current value of the main drum driving mechanism 3 obtained by the current value obtaining unit 261 is an idle current value, and the idle current value storage unit 262 temporarily stores the idle current value.

The milling current value calculating unit 263 is used for calculating the milling current value. Specifically, the milling current value calculating unit 263 subtracts the idle current value stored in the idle current value storage unit 262 from the current working current value obtained by the current value obtaining unit 261 at different times during the milling process, i.e. obtains the current milling current value at different times.

The comparison determination portion 27 is used for comparing and determining the current grinding current value and the standard grinding current value, so as to obtain whether the current grinding current value is greater than, less than or equal to the standard grinding current value. Here, the judgment criterion of the equality may be approximately equal to, for example, the present milling current value within. + -. 5% of the standard current value is regarded as being equal.

The rotation speed control unit 28 controls the rotation speed of the main drum drive mechanism 3 during operation, and includes: when the comparison judgment part 27 judges that the current grinding current value is smaller than the standard grinding current value, the main roller driving mechanism 3 is controlled to increase the rotating speed; when the comparison and judgment part 27 judges that the current grinding current value is larger than the standard grinding current value, the main roller driving mechanism 3 is controlled to reduce the rotating speed.

The discharge control section 29 is used for controlling the discharge mechanism 5 to change the discharge flow, that is, controlling the driving member 57 to operate, so that the driving member 57 drives the rotating disc 55 to rotate through the coupling 56 and the push rod 58, so that the stirring member 54 moves therewith and changes the size of the grinding opening between the rotating plate 52 and the outlet section 51, thereby changing the discharge flow of each grinding chamber. In this embodiment, the control operation of the discharge control unit 29 includes: when the comparison judgment part 27 judges that the current grinding current value is smaller than the standard grinding current value, the discharge flow is reduced; when the comparison and judgment part 27 judges that the current grinding current value is larger than the standard grinding current value, the discharge flow is increased.

The main control section 30 performs overall control of the operations of the rotational speed control section 28 and the discharge control section 29. In this embodiment, the current milling current value reflects the motor load of the main drum driving mechanism 3 and is directly related to the milling degree of the grains, so that the control of the rotation speed by the rotation speed control unit 28 and the control of the discharge flow rate by the discharge control unit 29 both affect the milling degree of the grains and the milling current. Specifically, under the condition that other conditions are not changed, the higher the rotating speed is, the deeper the grain milling degree is, and the larger the milling current is, and otherwise, the shallower the grain milling degree is, the smaller the milling current is; the larger the discharge flow, the shorter the grain residence time in the milling chamber 151, the shallower the milling degree and the smaller the milling current, and vice versa the deeper the grain milling degree and the larger the milling current.

The main control unit 30 of this embodiment controls the discharging and the rotating speed to make the milling current tend to the standard milling current, so that the grains are milled under the optimal milling current condition. Specifically, when the comparison determination portion 27 determines that the current grinding current value is greater than or less than the standard grinding current value, the discharge control portion 29 is first controlled to control the discharge flow rate (i.e., increase or decrease the discharge flow rate, so as to decrease or increase the current grinding current value), and when the current grinding current value is not reached after a period of time (e.g., 30 s), the rotation speed control portion 28 is further controlled to control the rotation speed (i.e., decrease or increase the rotation speed, so as to further decrease or increase the current grinding current value).

The main control unit 30 also controls operations of other components, and has a function of stopping the engine and performing an emergency stop. The stop means that the current cereal is milled, the milling completion state can be detected by arranging a detector at the bottom of the hopper, when the detector detects that the cereal in the hopper 2 flows away, that is, the milling is completed, the main control part 30 controls the main roller driving mechanism 3 to stop at this time, and controls the discharging mechanism 5 to adjust the discharging flow to the maximum after a predetermined time (after the last cereal is milled), so that the cereal in the whitening chamber 15 is completely discharged. The emergency shutdown means that when the current milling current value is greater than the current milling current value threshold, the main roller driving mechanism 3 is controlled to be shut down, and the discharging mechanism 5 is controlled to adjust the discharging flow to the maximum value so that all grains in the whitening chamber 15 can flow out, so that an operator can overhaul the grain mill.

The operation of the automatic milling apparatus 100 of the present embodiment will be explained with reference to the accompanying drawings.

Fig. 10 is a flowchart illustrating the operation of an automatic grinding apparatus according to a first embodiment of the present invention. As shown in fig. 10, when a batch of grains is to be milled, the automatic milling apparatus 100 of the present embodiment has the following operation.

In step S1, the input display unit 21 displays a milled item selection screen to allow the operator to select one as the current milled item, and the process proceeds to step S2.

In step S2, the search acquisition unit 25 searches the standard current value storage unit 22 and the grinding current value threshold storage unit 24 for the current standard current value and the current grinding current value threshold according to the current grinding type selected by the operator, and the process proceeds to step S3.

In step S3, the main control unit 30 controls the main drum driving mechanism 3 to start operating, and controls the milling current value obtaining unit 26 to obtain the no-load current value, and then the process proceeds to step S4.

In step S4, the main control unit 30 controls the opening of the feed valve in the feed mechanism 4 to allow the grains to flow into and fill each whitening chamber 15, and after the initial milling for a predetermined time (for example, about 10 seconds), the process proceeds to step S5.

Step S5, the main control part 30 controls the discharging mechanism 5 to be opened, the milled grains flow out at a certain discharging flow rate, and then the step S6 is carried out.

In step S6, the milling current value obtaining part 26 obtains the current milling current value in real time, and then the process goes to step S7.

In step S7, the main control unit 30 determines whether or not the milling of the grains is completed, and proceeds to step S8 when the milling is completed, and proceeds to step S9 when the milling is not completed.

In step S8, the main control section 30 stops the operation and then enters an end state.

In step S9, the comparison determination unit 27 determines the magnitude relationship between the current milling current value and the standard milling current value, and if it is determined to be greater than the standard milling current value, the process proceeds to step S10, if it is determined to be less than the standard milling current value, the process proceeds to step S11, and if it is determined to be equal to the standard milling current value, the process returns to step S6.

In step S10, the main control section 30 controls the discharge control section 28 to increase the discharge flow rate by controlling the discharge mechanism 5 by the discharge control section 28, and the process then proceeds to step S12.

In step S11, the main control unit 30 controls the discharge control unit 29, and the discharge control unit 29 controls the discharge mechanism 5 to decrease the discharge flow rate, and the process then proceeds to step S13.

In step S12, the milling current value obtaining part 26 obtains the current milling current value again, the comparison judging part 27 judges the magnitude relationship between the current milling current value and the standard milling current value, if the comparison result is greater than the reference value, the step S14 is performed, and if the comparison result is less than or equal to the reference value, the step S6 is performed.

In step S13, the milling current value obtaining part 26 obtains the current milling current value again, the comparison judging part 27 judges the magnitude relationship between the current milling current value and the standard milling current value, if the comparison result is less than the predetermined value, the step S15 is performed, and if the comparison result is greater than or equal to the predetermined value, the step S6 is performed.

In step S14, the main controller 30 controls the rotation speed controller 28 to cause the rotation speed controller 28 to control the main drum driving mechanism 3 to reduce the rotation speed, and then the process returns to step S6.

In step S15, the main controller 30 controls the rotation speed controller 28 to control the main drum driving mechanism 3 to increase the rotation speed, and then the process returns to step S6.

In the above process, the main control unit 30 determines in real time whether the current milling current is larger than the milling current threshold value, and if it is determined that the current milling current is larger than the milling current threshold value, the emergency stop is performed.

Effects and effects of the embodiments

According to the automatic milling equipment provided by the embodiment, the milling current value obtaining part can obtain the current milling current corresponding to the milling degree of the grains, the comparison judging part can compare the current milling current with the standard milling current value, and the rotating speed control part can perform corresponding rotating speed control according to the comparison judging result, so that the milling degree can be changed through rotating speed adjustment when the milling process of the grains is too deep or insufficient, and the grains are milled to the optimal degree all the time.

In the embodiment, because the discharge control portion can also control the discharge flow according to the comparison judgment result of the comparison judgment portion, the grain can be changed in the retention time of the grain in the whitening chamber through the adjustment of the discharge flow, so that the grinding degree is changed, and the grain can be always ground to the optimal degree.

Furthermore, the main control part can control two control actions of the discharge control part and the rotating speed control part, so that the two control mechanisms can work in a coordinated manner, and the whole grinding process can be reasonably carried out. In the two mechanisms, the inventor tests and discovers that the adjustment response of the discharging control to the grinding current value and the grinding degree of the grains is quicker and has smaller and more stable change trend fluctuation, and the reason for the reason is probably that the rotation speed control is also limited by factors such as the matching of the abrasive belt and the main roller. In this embodiment, since the main control portion controls the discharge control portion first, the rotation speed control portion is enabled to operate when the current milling current value cannot be adjusted to the optimum within a certain time period of the discharge control portion, which is equivalent to enabling the mechanism to operate more quickly and more easily, so that the milling current value can be stabilized better, that is, the milling degree of the grains in the whole process is more stable, and the grain quality is more consistent.

Furthermore, due to the adoption of the form that the turntable is matched with the stirring pieces, one turntable can synchronously drive a plurality of stirring pieces, the grinding openings of the grinding chambers can be synchronously adjusted, and the discharge flow in the grinding chambers can be more effectively adjusted.

< example two >

In the present embodiment, the same components as those in the first embodiment are given the same reference numerals, and the same description is omitted.

The present embodiment provides an automatic grain processing system composed of a plurality of different processing apparatuses connected in series, which includes a plurality of automatic milling apparatuses 400 for performing milling, and other processing apparatuses (including grain husking apparatuses disposed upstream of the automatic milling apparatuses 400 and polishing apparatuses disposed downstream of the automatic milling apparatuses, not shown) for performing other processing processes of grains.

Fig. 11 is a block diagram of an automatic grinding apparatus according to a second embodiment of the present invention.

As shown in fig. 11, the difference between the automatic milling apparatus 400 of the present embodiment and the first embodiment is mainly that the control apparatus 20 further includes a capacity obtaining portion 31 and a current capacity setting portion 32.

The control device 20 is communicatively connected to other automatic milling devices 200 and other processing devices, and is used for obtaining the capacity (i.e. the processing amount per unit time) of the adjacent upstream and downstream processing devices as the related capacity. The automatic milling apparatus 200 will typically have upstream equipment (which may be other automatic milling apparatus 200 or grain husking apparatus) and downstream equipment (which may be other automatic milling apparatus 200 or polishing apparatus), and the associated capacity will include the discharge flow rate of the upstream equipment and the feed flow rate of the downstream equipment, which can be detected by providing flow meters at the feed and discharge pipes of each apparatus.

The current capacity setting unit 32 is used for setting a current capacity range according to the related capacity. Specifically, the current capacity setting unit 32 selects the maximum value of the upstream equipment discharge flow and the downstream equipment feed flow as the maximum value of the related capacity and the minimum value of the related capacity as the minimum value of the related capacity, and then takes a value slightly smaller than the maximum value of the related capacity as the maximum current capacity and a value slightly larger than the minimum value of the related capacity as the minimum current capacity, so as to obtain the current capacity range.

The control mechanism of the main control unit 30 in this embodiment is also different from that in the first embodiment. Specifically, in this embodiment, when the comparison determination unit 27 determines that the current milling current value is greater than the current standard milling current value, the main control unit 30 first controls the discharging control unit 29, so that the discharging control unit 29 controls the discharging mechanism 5 to increase the discharging flow rate; when the discharging flow rate is equal to the maximum current capacity but the current milling current value is still greater than the current standard milling current value, the main control portion 30 allows the discharging control portion 29 to control the discharging mechanism 5 to maintain the discharging flow rate, and controls the rotation speed control portion 28 to allow the rotation speed control portion 28 to control the main drum driving mechanism 3 to reduce the rotation speed until the current milling current value is equal to the current standard milling current value. Similarly, when the comparison determination portion 27 determines that the current milling current value is smaller than the current standard milling current value, the main control portion 30 first controls the discharging control portion 29 to decrease the discharging flow rate, and when the discharging flow rate is equal to the minimum current capacity, the rotation speed control portion 28 controls the main drum driving mechanism 3 to increase the rotation speed until the current milling current value is equal to the current standard milling current value.

In this embodiment, the automatic milling device is further connected in series with other devices, the capacity obtaining portion can obtain the related capacities of the upstream and downstream devices, the current capacity setting portion sets the current capacity range according to the related capacities, and the main control portion controls the discharge control portion to change the discharge flow rate until the discharge flow rate reaches the upper limit or the lower limit of the current capacity range when the milling current value is greater than or less than the current standard milling current value, and then controls the rotation speed control portion to change the rotation speed.

The above embodiments are intended to illustrate the scope of the present invention, but the scope of the present invention is not limited to the scope described in the above embodiments.

For example, in the first and second embodiments, the rotating disc is matched with the stirring member, and the driving member drives the rotating disc to rotate so as to drive the stirring member to move and change the angle of the rotating plate, so that the grinding opening angle is changed, thereby adjusting the discharge flow. In the invention, the discharging component of the milling cavity can be simplified into a single electric control valve (namely, the angle of the rotating plate is changed through the electric control steering engine and the like), so that the discharging adjusting component can be omitted, and the processing control part directly sends corresponding electric signals to the electric control valve so as to change the angle of the electric control valve, namely change the milling opening angle.

In the embodiment, the comparison judgment part judges that the current grinding current value adopts a judgment mode approximately equal to the current grinding current value, and the standard grinding current value is a fixed value. In the present invention, the standard milling current value may also be directly stored in the form of a numerical range, and the range is not limited to ± 5%, and may be a larger or smaller range.

In addition, in the second embodiment, the automatic grain processing system comprises a plurality of automatic grinding devices connected in series. However, in the present invention, the automatic grain processing system may only include one automatic milling device, and the automatic milling device may be connected with other corresponding processing devices in series directly upstream and downstream.

Claims (10)

1. An automatic milling apparatus for milling grain, comprising:

a milling apparatus for milling the grain; and

a control device for controlling the milling process,

wherein the milling equipment is provided with a main roller, a main roller driving mechanism for driving the main roller to rotate, an abrasive belt driven by the main roller, a plurality of whitening chambers for accommodating the grains and matching with the abrasive belt so as to realize milling, and a discharging mechanism for discharging the grains milled in the whitening chambers,

the main roller driving mechanism is a motor,

the control apparatus includes:

a standard current value storage part for storing a preset standard milling current value;

a grinding current value obtaining part for continuously obtaining the current grinding current value of the main roller driving mechanism in real time in the grinding process of the grains;

a comparison judgment part for continuously judging the current value and the standard grinding current value; and

a rotation speed control unit for controlling a rotation speed of the main drum drive mechanism during operation, comprising: and when the current grinding current value is greater than the standard grinding current value, controlling the main roller driving mechanism to reduce the rotating speed.

2. The automatic milling apparatus of claim 1, wherein:

wherein the control device further comprises:

the ejection of compact control part, be used for to discharge mechanism controls thereby change ejection of compact flow, include: and when the current grinding current value is smaller than the standard grinding current value, the discharging flow rate is reduced, and when the current grinding current value is larger than the standard grinding current value, the discharging flow rate is increased.

3. The automatic milling apparatus of claim 2, wherein:

wherein, discharge mechanism includes:

the milling cavity discharging assembly is provided with an outlet part arranged at the lower end in the milling chamber, a rotating plate rotatably arranged in the outlet part and a stirring part capable of pushing the rotating plate to rotate;

the discharging adjusting component is provided with a turntable which can push the poking piece to rotate so as to change the angle of the rotating plate and a driving piece which drives the turntable to rotate,

the discharging control part controls the driving piece to drive the turntable to rotate so as to change the grinding opening angle between the rotating plate and the outlet part, and further change the discharging flow.

4. The automatic milling apparatus of claim 2, wherein:

wherein the discharging mechanism comprises a plurality of discharging valves arranged at the lower end of the whitening chamber, the discharging valves are electric control valves,

the discharge control part controls the grinding opening angle of the electric control valve so as to change the discharge flow.

5. The automatic milling apparatus of claim 2, wherein:

wherein the control device further comprises:

a main control part for controlling the operation of the display device,

when the comparison judgment part judges that the current value is smaller than the standard grinding current value, the main control part firstly controls the discharge control part to reduce the discharge flow, and after the preset time, the comparison judgment part still judges that the current value is smaller than the standard grinding current value and then controls the rotating speed control part to control the main roller driving mechanism to increase the rotating speed,

when the comparison judgment part judges that the current value is larger than the standard grinding current value, the main control part firstly controls the discharge control part to increase the discharge flow, and after the preset time, the comparison judgment part still judges that the current value is larger than the standard grinding current value, and then controls the rotating speed control part to control the main roller driving mechanism to reduce the rotating speed.

6. The automatic milling apparatus of claim 2, wherein:

wherein the control device further comprises:

a main control part, a capacity obtaining part and a current capacity setting part,

the automatic milling apparatus is also connected in series with at least one other processing apparatus,

the capacity acquiring unit acquires the processing amount per unit time from at least one of the other processing apparatuses as the related capacity,

the current capacity setting part sets a numerical range with a preset upper and lower limit difference value with the related capacity as a current capacity range according to the related capacity,

when the comparison judgment part judges that the current value is smaller than the standard grinding current value, the main control part controls the discharge control part to reduce the discharge flow, and when the comparison judgment part still judges that the current value is smaller than the standard grinding current value after the discharge flow reaches the lower limit of the current capacity range, the main control part controls the rotating speed control part to control the main roller driving mechanism to increase the rotating speed,

when the comparison judgment part judges that the current value is larger than the standard grinding current value, the main control part controls the discharge control part to increase the discharge flow, and when the comparison judgment part still judges that the current value is larger than the standard grinding current value after the discharge flow reaches the upper limit of the current capacity range, the main control part controls the main roller driving mechanism to reduce the rotating speed.

7. The automatic milling apparatus of claim 1, wherein:

wherein the milling current value acquiring part comprises a no-load current value storage unit, a current value acquiring unit and a milling current value calculating unit,

the current value obtaining unit obtains the current of the no-load start of the main roller driving mechanism as a no-load current value,

the no-load current value storage unit stores the no-load current value,

the current value obtaining unit obtains a current working current value of the main roller driving mechanism,

and the grinding current value calculating part subtracts the current working current value and the no-load current value to obtain the current grinding current value.

8. The automatic milling apparatus of claim 1, wherein:

wherein the control device also comprises a retrieval acquisition part, an input display part and a picture storage part,

the standard current value storage part stores a plurality of grinding types and the standard grinding current values corresponding to the plurality of grinding types,

the picture storage part stores a grinding type selection picture,

the input display part displays the milling type selection picture before the milling processing is started so that an operator selects the grain needing to be milled as the current milling type,

the retrieval acquisition part retrieves the standard grinding current value storage part and acquires the grinding type matched with the current grinding type selected by the user and the corresponding standard grinding current value as the standard grinding current value of the current grinding processing.

9. An automated grain processing system for processing grain, including milling, comprising:

at least one automatic milling device and other processing devices for processing the grains other than milling,

the automatic milling device is connected in series with the other processing device, the automatic milling device being as claimed in any one of claims 1-8.

10. The automatic milling apparatus of claim 9, wherein:

the automatic grinding equipment comprises a plurality of automatic grinding equipment, wherein the automatic grinding equipment is connected in series.

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