Control system based on turnover type vacuum negative pressure drying equipment

Abstract

A control system based on turnover type vacuum negative pressure drying equipment comprises a drying module, a turnover module and a control module, the drying module is connected with the turnover module, the turnover module is connected with the control module, the control module is in signal connection with a cloud platform, the drying module comprises a drying barrel 1 and a heater 2, and the turnover module comprises a driving motor 3, a driven gear 4 and a driving gear 5. And the control module comprises a main control circuit 6. According to the system, the overturning direction and the overturning stroke of the drying barrel 1 can be accurately controlled through the control module, the feeding position and the discharging position can be positioned, the overturning speed can be controlled, and the defect that a traditional servo motor is single in function in the aspects of overturning stroke control, overturning speed control and point positioning is overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to primary agricultural product processing equipment technical field especially, relates to a control system based on turnover type vacuum negative pressure drying equipment. BACKGROUND

[0002] In order to realize dynamic drying, our company has developed turnover type drying barrel type equipment, and adopts traditional servo motor to control its turnover, can realize single A point to B point movement stroke, but cannot solve the following problems simultaneously: (1) flexible positioning turnover stroke: from A point to B point, such as positive rotation 360 degrees, reverse rotation 360 degrees or positive rotation 270 degrees, reverse rotation 270 degrees; (2) automatic positioning feeding position, such as A point to C point; (3) automatic positioning discharge position, such as from A point to D point; (4) running speed can be flexibly regulated: from slow to fast to uniform speed when starting, from uniform speed to deceleration to stop when stopping, the movement speed of existing servo motor is always single, that is, from the starting point to the end point is a speed, if the speed is adjusted slowly, the turnover requirement cannot be met, if the speed is adjusted quickly, the aging of acceleration structure is increased. In view of the above four points, our company makes technical improvement. SUMMARY

[0003] The application provides a control system based on turnover type vacuum negative pressure drying equipment, which realizes flexible regulation and control of movement stroke, automatic positioning of stop position and flexible setting of running speed by comprehensive use of control module, drying module, turnover module and cloud platform, meets the demand of automatic operation, greatly reduces equipment wear and tear and prolongs service life, and reduces overall control cost.

[0004] A control system based on turnover type vacuum negative pressure drying equipment, including drying module, turnover module and control module; the drying module and the turnover module are connected, the turnover module and the control module are connected, and the control module and the cloud platform are signal connected.

[0005] The drying module includes a drying barrel 1 and a heater 2.

[0006] The turnover module includes a driving motor 3, a driven gear 4 and a driving gear 5, the driving motor 3 and the driving gear 5 are mechanically connected, and the driven gear 4 and the driving gear 5 are meshed with each other.

[0007] One end of the drying barrel 1 and the driven gear 4 are welded and fixed, and can also be fixed by screws.

[0008] The control module comprises a main control circuit 6, a crystal oscillator circuit 7, a reset circuit 8, a BOOT pin circuit 9, a serial port signal isolation circuit 10, a power supply isolation circuit 11, a zero limit detection circuit 12, a TTL circuit 13, a 485 automatic flow conversion circuit 14, a pulse direction output isolation circuit 15, a remote limit detection circuit 16, a debugging and burning interface 17, a power input end 18, a zero limit detection end 19, a 485 output end 20, a pulse direction output end 21, and a remote limit detection end 22.

[0009] The crystal oscillator circuit 7, the reset circuit 8, the BOOT pin circuit 9, the serial port signal isolation circuit 10, the power supply isolation circuit 11, the zero limit detection circuit 12, the TTL circuit 13, the pulse direction output isolation circuit 15, and the remote limit detection circuit 16 are connected with the main control circuit 6.

[0010] The serial port signal isolation circuit 10 is connected with the debugging and burning interface 17, the power supply isolation circuit 11 is connected with the power input end 18, the zero limit detection circuit 12 is connected with the zero limit detection end 19, the TTL circuit 13 and the 485 automatic flow conversion circuit 14 signal intercommunicate, the 485 automatic flow conversion circuit 14 is connected with the 485 output end 20, the pulse direction output isolation circuit 15 is connected with the pulse direction output end 21, and the remote limit detection circuit 16 is connected with the remote limit detection end 22.

[0011] The control module is connected with a cloud platform signal through the 485 output end 20, and is connected with an external power supply through the power input end 18, and can be set online with technical parameters and working state visualization.

[0012] The control module is electrically connected with the driving motor 3 of the turnover module through the pulse direction output end 21.

[0013] The control module further comprises a state indication circuit 23 connected to the main control circuit, and the state indication circuit comprises components capable of emitting sound or light or a combination thereof.

[0014] The driving motor 3 can be a servo motor on the market.

[0015] The driven gear 4 and the driving gear 5 are steel plate gears processed from steel plates.

[0016] The drying barrel 1 body is loaded with a heater 2.

[0017] The working principle of the control system is as follows:

[0018] The motion speed is realized according to the percentage of the acceleration and deceleration of the total motion time given by the upper computer. The system, the control mode, the initial speed given by the upper computer (and the given speed can be set according to different crops), the initial speed is given, the driving motor starts from the zero position, and the corresponding position information is recorded after moving to the required position and stored in the corresponding register (a plurality of required positions can be stored), so that the point motion or reciprocating motion of a variety of different trajectories can be realized. After the above actions are completed, the corresponding motion trajectory is compiled, and the upper computer can select the set trajectory for single motion or reciprocating motion, and the motion speed can be adjusted. The adjustable motion speed is based on the program algorithm calculation, that is, the total time of the entire motion trajectory is calculated, and then the percentage of the total motion time is calculated, and the acceleration and deceleration time required by the acceleration and deceleration process is selected to realize the adjustable motion speed.

[0019] The beneficial effects of the present application are:

[0020] The present application can flexibly control the motion path of the turnover during the implementation of the turnover type dynamic drying operation of the drying barrel, from A point to B point, such as forward rotation of 360 degrees, reverse rotation of 360 degrees, forward rotation of 270 degrees, and reverse rotation of 270 degrees. The feeding point and the discharging point can be accurately set and automatically positioned, such as from the initial point to C point and from the initial point to D point. The motion speed during starting can be set from slow to gradually increase to uniform speed, and the motion speed during stopping can be set from uniform speed to gradually decrease to stop. The traditional servo motor can only realize a speed from starting to stopping, which is too slow to achieve the ideal drying effect and efficiency, and too fast to accelerate the wear of the equipment structure. In summary, the present system can more flexibly control the motion path, point positioning and motion speed of the drying barrel, which not only can highly meet the needs of production, but also can greatly slow down the wear of the equipment structure, prolong the service life, improve the operation efficiency and reduce the production energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The circuit schematic diagram of the present application;

[0022] Figure 2 The overall appearance structure diagram of the drying barrel.

[0023] 1-drying barrel; 2-heater; 3-driving motor; 4-driven gear; 5-driving gear; 6-main control circuit; 7-crystal oscillator circuit; 8-reset circuit; 9-BOOT pin circuit; 10-serial port signal isolation circuit; 11-power isolation circuit; 12-zero point limit detection circuit; 13-TTL circuit; 14-485 automatic flow conversion circuit; 15-pulse direction output isolation circuit; 16-remote limit detection circuit; 17-debugging and burning interface; 18-power input end; 19-zero point limit detection end; 20-485 output end; 21-pulse direction output end; 22-remote limit detection end; 23-state indication circuit; 24-supporting shaft; 25-supporting bracket. DETAILED DESCRIPTION

[0024] A control system based on a turnover type vacuum negative pressure drying equipment, comprising a drying module, a turnover module and a control module.

[0025] The drying module comprises a drying barrel 1 and a heater 2, wherein the heater 2 is arranged on the drying barrel 1 and controlled by a heating control module to obtain a heating environment in the drying barrel 1.

[0026] The drying barrel 1 is rotatably arranged on the supporting bracket 25 by a supporting shaft 24.

[0027] The turnover module comprises a driving motor 3, a driven gear 4 and a driving gear 5.

[0028] The driven gear 4 is welded and fixed at one end of the drying barrel 1, and is a steel gear plate processed from a steel plate.

[0029] The driving gear 5 is mechanically connected with the driving motor 3 and arranged on the supporting bracket, and located at the same direction end of the drying barrel 1 as the driven gear 4, and the driven gear 4 and the driving gear 5 are engaged with each other. The driving gear 5 is a steel gear plate processed from a steel plate, and the driving motor 3 is a servo motor.

[0030] The control module comprises a main control circuit 6, a crystal oscillator circuit 7, a reset circuit 8, a BOOT pin circuit 9, a serial port signal isolation circuit 10, a power isolation circuit 11, a zero point limit detection circuit 12, a TTL circuit 13, a 485 automatic flow conversion circuit 14, a pulse direction output isolation circuit 15, a remote limit detection circuit 16, a debugging and burning interface 17, a power input end 18, a zero point limit detection end 19, a 485 output end 20, a pulse direction output end 21 and a remote limit detection end 22.

[0031] The crystal oscillator circuit 7, the reset circuit 8, the BOOT pin circuit 9, the serial port signal isolation circuit 10, the power isolation circuit 11, the zero point limit detection circuit 12, the TTL circuit 13, the pulse direction output isolation circuit 15 and the remote limit detection circuit 16 are connected with the main control circuit 6, respectively.

[0032] The serial port signal isolation circuit 10 is connected with a debugging and burning interface 17, the power supply isolation circuit 11 is connected with a power input end 18, the zero point limit detection circuit 12 is connected with a zero point limit detection end 19, the TTL circuit 13 and the 485 automatic flow conversion circuit 14 signal each other, the 485 automatic flow conversion circuit 14 is connected with a 485 output end 20, the pulse direction output isolation circuit 15 is connected with a pulse direction output end 21, and the remote limit detection circuit 16 is connected with a remote limit detection end 22.

[0033] The control module further comprises a state indicating circuit 23 connected to the main control circuit, and the state indicating circuit comprises components capable of emitting sound or light or a combination thereof.

[0034] The control module is arranged in a control box, is connected with a cloud platform signal through the 485 output end 20, is connected with an external power supply through the power input end 18, and is electrically connected with a driving motor 3 of a turnover module through the pulse direction output end 21.

Claims

1. A control system based on a rotary vacuum negative pressure drying device, characterized in that: It includes a drying module, a flipping module, and a control module; the drying module and the flipping module are connected, the flipping module and the control module are connected, and the control module and the cloud platform are connected via signals. The drying module includes a drying drum (1) and a heater (2); The flipping module includes a drive motor (3), a driven gear (4), and a driving gear (5). The drive motor (3) and the driving gear (5) are mechanically connected, and the driven gear (4) and the driving gear (5) mesh with each other. The control module includes a main control circuit (6), a crystal oscillator circuit (7), a reset circuit (8), a BOOT pin circuit (9), a serial port signal isolation circuit (10), a power isolation circuit (11), a zero-point limit detection circuit (12), a TTL circuit (13), a 485 automatic flow circuit (14), a pulse direction output isolation circuit (15), a remote limit detection circuit (16), a debugging and programming interface (17), a power input terminal (18), a zero-point limit detection terminal (19), a 485 output terminal (20), a pulse direction output terminal (21), and a remote limit detection terminal (22). The crystal oscillator circuit (7), reset circuit (8), BOOT pin circuit (9), serial port signal isolation circuit (10), power supply isolation circuit (11), zero-point limit detection circuit (12), TTL circuit (13), pulse direction output isolation circuit (15), and remote limit detection circuit (16) are respectively connected to the main control circuit (6); The serial port signal isolation circuit (10) is connected to the debugging and programming interface (17), the power isolation circuit (11) is connected to the power input terminal (18), the zero-point limit detection circuit (12) is connected to the zero-point limit detection terminal (19), the TTL circuit (13) and the 485 automatic transfer circuit (14) transmit signals to each other, the 485 automatic transfer circuit (14) is connected to the 485 output terminal (20), the pulse direction output isolation circuit (15) is connected to the pulse direction output terminal (21), and the remote limit detection circuit (16) is connected to the remote limit detection terminal (22).

2. The control system based on a flip-type vacuum negative pressure drying device according to claim 1, characterized in that: The control module also includes a status indicator circuit (23), which is connected to the main control circuit (6).

3. The control system based on a flip-type vacuum negative pressure drying device according to claim 1, characterized in that: The control module is electrically connected to the drive motor (3) through its pulse direction output terminal (21) and to the cloud platform signal through its 485 output terminal (20).

4. The control system based on a flip-type vacuum negative pressure drying device according to claim 1, characterized in that: The driven gear (4) is fixedly connected to the drying barrel (1) by welding or screws.

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