Full-automatic fried cashew nut seasoning production line based on PLC control

Abstract

The utility model relates to a full-automatic fried cashew nut seasoning production line based on PLC (Programmable Logic Controller) control, which comprises a first elevator arranged between a stock bin and a frying machine, a second elevator arranged between a continuous frying machine mesh belt and a deoiling machine, and a third elevator arranged between the deoiling machine and a roller seasoning machine, the continuous frying machine further comprises a PLC, a detection unit and a driving unit, the driving unit comprises a plurality of relays, the first elevator, the second elevator, the third elevator, the continuous frying machine net belt, the deoiling machine, the cooling conveyor and the roller seasoning machine are all provided with frequency converters, the PLC is in communication connection with the frequency converters, and the PLC is in communication connection with an HMI module. The full-automatic cashew nut production line is provided with the PLC and the three elevators used for conveying cashew nuts, the PLC controls all production devices through the driving unit and the detection unit, and full-automatic production is achieved by combining control over the elevators.

Description

Technical Field

[0001] This utility model relates to the field of food processing equipment technology, specifically to a fully automatic fried cashew nut seasoning production line based on PLC control. Background Technology

[0002] To improve the texture of cashews, frying is used to enhance their crispness, and flavoring is added after frying. Existing cashew frying production lines are inefficient, mainly due to the numerous frying steps and the lack of seamless operation between different pieces of equipment. The production line mainly includes a hopper, a fryer, a continuous fryer conveyor belt, an oil remover, a drum seasoning machine, and a cooling conveyor. The process involves workers taking measured amounts of cashews from the hopper, placing them in the fryer, where the continuous fryer conveyor belt carries the cashews through the fryer to complete the frying process. After frying, the cashews are manually fed into the oil remover to remove excess oil. Then, they are manually fed into the drum seasoning machine for flavoring. Finally, the cooling conveyor cools the cashews before they are sent to the packaging area.

[0003] In existing technologies, fryers, continuous fryer conveyor belts, oil extractors and drum seasoning machines have achieved automatic operation, but they still rely on manual connection, which is inefficient and will affect the taste of fried cashews due to low efficiency.

[0004] Therefore, there is an urgent need for a fully automated production line to connect the various production equipment. Summary of the Invention

[0005] This invention addresses the problem of low production efficiency caused by the disjointed operation of various production equipment in existing fried cashew production lines. It proposes a fully automated fried cashew seasoning production line based on PLC control, which includes a PLC controller and three elevators for transporting cashews. The PLC controller controls each production device through drive and detection units, and combined with the control of the elevators, achieves fully automated production.

[0006] To achieve the above objectives, this utility model proposes a fully automatic fried cashew nut seasoning production line based on PLC control, comprising a hopper, a fryer, a continuous fryer conveyor belt, an oil extractor, a drum seasoning machine, and a cooling conveyor arranged in sequence. A first elevator is provided between the hopper and the fryer, a second elevator is provided between the continuous fryer conveyor belt and the oil extractor, and a third elevator is provided between the oil extractor and the drum seasoning machine. The production line also includes a PLC controller, a detection unit, and a drive unit. The drive unit includes multiple relays. Each of the first elevator, second elevator, third elevator, continuous fryer conveyor belt, oil extractor, cooling conveyor, and drum seasoning machine is equipped with a frequency converter. The multiple frequency converters are connected to a power supply through the relays. The coils of the relays are connected to the PLC controller, and the PLC controller is communicatively connected to the frequency converters.

[0007] The detection unit includes a photoelectric switch, a liquid level sensor, and a temperature sensor. The photoelectric switch is installed on the side wall of the hopper and is used to detect the material height in the hopper. The fryer is equipped with a liquid level sensor and includes a burner. The burner is equipped with a temperature sensor and is used to detect the working status of the burner. The burner is connected to the PLC controller via a relay.

[0008] The PLC controller is connected to an HMI module for communication.

[0009] Furthermore, the first hoist, the second hoist, and the third hoist all include a hoisting motor. The hoisting motor is connected to a power source via a frequency converter. A contactor is connected between the frequency converter and the power source. The coil of the contactor is connected to the contacts of the relay, and the coil of the relay is connected to the PLC controller.

[0010] The PLC controller controls the power supply to and from the frequency converter, and through the frequency converter, controls the operating speed of the first, second, and third hoists, providing the hardware foundation for the first, second, and third hoists to connect the work process and deliver cashews on time.

[0011] Furthermore, the continuous fryer conveyor belt, oil extractor, drum seasoning machine, and cooling conveyor are all equipped with drive motors. The drive motors are connected to the power supply via frequency converters. A contactor is connected between the frequency converter and the power supply. The coil of the contactor is connected to the contacts of the relay, and the coil of the relay is connected to the PLC controller.

[0012] The PLC controller controls the power supply to and from the frequency converter, which in turn controls the drive motor, providing the hardware foundation for adjusting the production line according to production requirements.

[0013] Furthermore, the hopper is equipped with an inlet solenoid valve and an outlet solenoid valve, and the coils of the inlet solenoid valve and the outlet solenoid valve are connected to the PLC controller.

[0014] To ensure the frying effect, a quantitative feeding strategy is adopted each time. The control of the inlet and outlet solenoid valves provides the hardware foundation for timely feeding and replenishment.

[0015] Furthermore, the cooling conveyor also includes a negative pressure fan, which is used to cool the cashews. The negative pressure fan is connected to the power supply through the contacts of the contactor, the coil of the contactor is connected to the power supply through the normally open contacts of the relay, and the coil of the relay is connected to the PLC controller.

[0016] The PLC controller controls the power supply to and from the negative pressure fan, providing the hardware basis for adjusting the power supply time of the negative pressure fan through a program.

[0017] Furthermore, the drum seasoning machine also includes a vibration motor, which is used to mix cashews and seasonings evenly. The vibration motor is connected to the power supply through the contacts of the contactor, the coil of the contactor is connected to the power supply through the normally open contacts of the relay, and the coil of the relay is connected to the PLC controller.

[0018] The PLC controller controls the power supply to and from the vibration motor, improving the automation level of the production line.

[0019] The beneficial effects of this utility model through the above technical solution are as follows:

[0020] This invention achieves fully automated production of fried cashew nut seasoning. A first elevator is installed between the hopper and the fryer; a second elevator is installed between the continuous fryer's conveyor belt and the oil extractor; and a third elevator is installed between the oil extractor and the drum seasoning machine, completing the production line connection. A PLC controller, in conjunction with a detection unit and a drive unit, controls each piece of equipment. The system automatically completes the flow of cashews between the hopper, fryer, continuous fryer's conveyor belt, oil extractor, drum seasoning machine, and cooling conveyor, greatly improving production efficiency, reducing production cycle time, and meeting the needs of large-scale production. The PLC controller's drive unit circuit structure is simple and easy to wire. Combined with photoelectric switches, liquid level sensors, and temperature sensors, the frying process precision is improved, effectively avoiding product quality problems caused by production fluctuations, ensuring that each batch of fried cashews maintains a consistently high-quality taste and flavor. Attached Figure Description

[0021] Figure 1 This is one of the circuit diagrams for a fully automatic fried cashew seasoning production line based on PLC control according to this utility model.

[0022] Figure 2This is the second circuit diagram of a fully automatic fried cashew seasoning production line based on PLC control according to this utility model.

[0023] Figure 3 This is the third circuit diagram of a fully automatic fried cashew seasoning production line based on PLC control according to this utility model.

[0024] Figure 4 This is the fourth circuit diagram of a fully automatic fried cashew seasoning production line based on PLC control according to this utility model.

[0025] Figure 5 This is the fifth circuit diagram of a fully automatic fried cashew seasoning production line based on PLC control according to this utility model.

[0026] The reference numerals are as follows: 2. Fryer, 3. Continuous fryer conveyor belt, 4. Oil remover, 5. Drum seasoning machine, 6. Cooling conveyor, 7. First elevator, 8. Second elevator, 9. Third elevator, 10. PLC controller, 11. Frequency converter, 12. Photoelectric switch, 13. Liquid level sensor, 14. Temperature sensor, 15. Outlet solenoid valve, 16. Inlet solenoid valve, 17. Negative pressure fan. Detailed Implementation

[0027] Example 1

[0028] like Figures 1-5 As shown, a fully automatic fried cashew nut seasoning production line based on PLC control includes a hopper, a fryer 2, a continuous fryer mesh belt 3, an oil extractor 4, a drum seasoning machine 5, and a cooling conveyor 6 arranged in sequence. A first elevator 7 is arranged between the hopper and the fryer 2, a second elevator 8 is arranged between the continuous fryer mesh belt 3 and the oil extractor 4, and a third elevator 9 is arranged between the oil extractor 4 and the drum seasoning machine 5. The production line also includes a PLC controller 10, a detection unit, and a drive unit. The drive unit includes multiple relays. The first elevator 7, the second elevator 8, the third elevator 9, the continuous fryer mesh belt 3, the oil extractor 4, the cooling conveyor 6, and the drum seasoning machine 5 are all equipped with frequency converters 11. The multiple frequency converters 11 are connected to a power supply through the relays. The coils of the relays are connected to the PLC controller 10, and the PLC controller 10 is communicatively connected to the frequency converters 11.

[0029] The detection unit includes a photoelectric switch 12, a liquid level sensor 13, and a temperature sensor 14. The photoelectric switch 12 is installed on the side wall of the hopper and is used to detect the material height in the hopper. The fryer 2 is equipped with a liquid level sensor 13. The fryer 2 includes a burner. The burner is equipped with a temperature sensor 14. The temperature sensor 14 is used to detect the working status of the burner. The burner is connected to the PLC controller 10 through a relay.

[0030] The PLC controller 10 is connected to an HMI module for communication.

[0031] The first hoist 7, the second hoist 8, and the third hoist 9 all include a hoisting motor. The hoisting motor is connected to a power source through a frequency converter 11. A contactor is connected between the frequency converter 11 and the power source. The coil of the contactor is connected to the contacts of the relay. The coil of the relay is connected to the PLC controller 10.

[0032] The continuous fryer mesh belt 3, oil extractor 4, drum seasoning machine 5, and cooling conveyor 6 are all equipped with drive motors. The drive motors are connected to the power supply through a frequency converter 11. A contactor is connected between the frequency converter 11 and the power supply. The coil of the contactor is connected to the contact of the relay. The coil of the relay is connected to the PLC controller 10.

[0033] The hopper is equipped with an inlet solenoid valve 16 and an outlet solenoid valve 15, and the coils of the inlet solenoid valve 16 and the outlet solenoid valve 15 are connected to the PLC controller 10.

[0034] The cooling conveyor 6 also includes a negative pressure fan 17, which is used to cool cashews. The negative pressure fan 17 is connected to the power supply through the contacts of the contactor. The coil of the contactor is connected to the power supply through the normally open contacts of the relay. The coil of the relay is connected to the PLC controller 10.

[0035] The drum seasoning machine 5 also includes a vibration motor, which is used to mix cashews and seasonings evenly. The vibration motor is connected to the power supply through the contacts of the contactor, and the coil of the contactor is connected to the power supply through the normally open contacts of the relay. The coil of the relay is connected to the PLC controller 10.

[0036] In this embodiment, as Figures 1-5 As shown, M represents a motor, KA represents a relay, KM represents a contactor, and FV represents a frequency converter.

[0037] Before operation, the fryer 2 is turned on for preheating. The PLC controller 10 controls the burner to work (the temperature sensor 14 detects the temperature, and the PLC controller 10 controls the burner according to the temperature threshold, thereby achieving oil temperature control). The oil in the fryer 2 reaches the frying temperature according to the set temperature.

[0038] During operation, the staff issues operation instructions through the HMI module. The PLC controller 10 controls the coil of the outlet solenoid valve 15 to be energized, the valve port of the outlet solenoid valve 15 opens, and the raw cashews fall from the hopper. The photoelectric switch 12 detects the material height in the hopper to achieve quantitative feeding. The PLC controller 10 controls the relay to power on, and the frequency converter 11 of the first elevator 7 receives a start signal. The frequency converter 11 is connected to the PLC controller 10, and the PLC controller 10 controls the first elevator 7 to work. The first elevator 7 feeds the cashews into the fryer 2, which contains edible oil and a continuous fryer mesh belt 3. The PLC controller 10 controls the frequency converter 11 of the continuous fryer mesh belt 3 to work, and then the frequency converter 11 controls the drive motor to work. The continuous fryer mesh belt 3 carries the cashews to the second elevator 8 at a constant speed. Then, the PLC controller 10 controls the second elevator 8 to work, and the second elevator 8 feeds the cashews into the deoiling machine 4. The PLC controller 10 controls the drive motor of the deoiling machine 4 to work. The PLC controller 10 is connected to the frequency converter 11 to control the power of the drive motor, and the cashews are deoiled in the deoiling machine 4.

[0039] Next, the PLC controller 10 controls the third elevator 9 to work, and the third elevator 9 sends the cashews into the drum seasoning machine 5. The PLC controller 10 controls the drive motor in the drum seasoning machine 5 to work, and the drum seasoning machine 5 stirs the cashews so that they are fully and evenly in contact with the seasonings.

[0040] The seasoned cashews enter the cooling conveyor 6. The PLC controller 10 controls the drive motor of the cooling conveyor 6 to work. The cooling conveyor 6 conveys the seasoned cashews. During the transmission process, the PLC controller 10 controls the negative pressure fan 17 to work. The negative pressure fan 17 cools the cashews down to room temperature. The cashews are then packaged at the packaging area.

[0041] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A full-automatic fried cashew seasoning production line based on PLC control, comprising sequentially arranged a stock bin, a fryer (2), a continuous fryer mesh belt (3), an oil removal machine (4), a roller seasoning machine (5) and a cooling conveyor (6), characterized in that, The first elevator (7) is arranged between the silo and the fryer (2), the second elevator (8) is arranged between the continuous fryer mesh belt (3) and the deoiling machine (4), the third elevator (9) is arranged between the deoiling machine (4) and the drum seasoning machine (5), and the PLC controller (10), the detection unit and the driving unit are further included, the driving unit includes a plurality of relays, the first elevator (7), the second elevator (8), the third elevator (9), the continuous fryer mesh belt (3), the deoiling machine (4), the cooling conveyor (6) and the drum seasoning machine (5) are all provided with frequency converters (11), the plurality of frequency converters (11) are connected to the power supply through the relays, the coils of the relays are connected to the PLC controller (10), and the PLC controller (10) is in communication connection with the frequency converters (11); The detection unit includes a photoelectric switch (12), a liquid level sensor (13) and a temperature sensor (14), the photoelectric switch (12) is arranged on the sidewall of the silo and is used for detecting the material height in the silo, the fryer (2) is provided with the liquid level sensor (13), the fryer (2) includes a burner, the burner is provided with the temperature sensor (14), the temperature sensor (14) is used for detecting the working state of the burner, and the burner is connected to the PLC controller (10) through the relay. The PLC controller (10) is in communication connection with an HMI module.

2. The full-automatic cashew frying and seasoning production line based on PLC control according to claim 1, characterized in that, The first elevator (7), the second elevator (8) and the third elevator (9) all include lifting motors, the lifting motors are connected to the power supply through the frequency converters (11), contactors are connected between the frequency converters (11) and the power supply, the coils of the contactors are connected to the contacts of the relays, and the coils of the relays are connected to the PLC controller (10).

3. The full-automatic cashew frying and seasoning production line based on PLC control according to claim 1, characterized in that, The continuous fryer mesh belt (3), the deoiling machine (4), the drum seasoning machine (5) and the cooling conveyor (6) are all provided with driving motors, the driving motors are connected to the power supply through the frequency converters (11), contactors are connected between the frequency converters (11) and the power supply, the coils of the contactors are connected to the contacts of the relays, and the coils of the relays are connected to the PLC controller (10).

4. The full-automatic cashew frying and seasoning production line based on PLC control according to claim 1, characterized in that, The silo is provided with an inlet electromagnetic valve (16) and an outlet electromagnetic valve (15), and the coils of the inlet electromagnetic valve (16) and the outlet electromagnetic valve (15) are connected to the PLC controller (10).

5. The full-automatic cashew frying and seasoning production line based on PLC control according to claim 1, characterized in that, The cooling conveyor (6) further includes a negative pressure fan (17), the negative pressure fan (17) is used for cooling cashews, the negative pressure fan (17) is connected to a contactor, the negative pressure fan (17) is connected to the power supply through the contacts of the contactor, the coil of the contactor is connected to the power supply through the normally open contacts of the relay, and the coil of the relay is connected to the PLC controller (10).

6. The full-automatic cashew frying and seasoning production line based on PLC control according to claim 1, characterized in that, The drum flavoring machine (5) further comprises a vibration motor for mixing cashews and seasonings uniformly, the vibration motor is connected with a contactor, the vibration motor is connected with a power supply through contacts of the contactor, a coil of the contactor is connected with the power supply through the normally open contact of the relay, and the coil of the relay is connected with the PLC controller (10).

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