A dead pig crushing device with automatic jamming reverse function

Abstract

The utility model discloses a dead pig crushing device with dead -locking automatic reverse function belongs to the field of disease dead livestock and poultry harmless treatment equipment technology, including frame, the frame be equipped with crushing chamber, install drive motor on the frame, and drive motor passes through the main shaft of reducer connection and extends into crushing chamber, and the power input end of drive motor is connected with current sensor, and the input shaft or output shaft of reducer is equipped with torque sensor, and the upper end of main shaft installs the rotating speed sensor, and current sensor, torque sensor, rotating speed sensor all are connected through wire and PLC control module, and PLC control module and motor positive and negative rotation actuating mechanism communication connection, and motor positive and negative rotation actuating mechanism and drive motor's control end communication connection, the utility model discloses utilize programmable control system PLC real -time monitoring equipment operating state, has eliminated the security risk of manual cleaning crushing chamber, has improved equipment's security, reliability, operating efficiency and automation level significantly.

Description

Technical Field

[0001] This utility model relates to the technical field of harmless treatment equipment for diseased and dead livestock and poultry, specifically a dead pig crushing device with a jamming and automatic reversing function. Background Technology

[0002] In large-scale farms and harmless treatment centers for dead livestock and poultry, dead pig shredders are one of the key pieces of equipment in the pre-treatment stage. Their function is to break whole dead pigs into small pieces to facilitate subsequent processing such as rendering, fermentation, or incineration. Existing dead pig shredders typically use a motor to drive a rotor equipped with blades through a reducer, which shears, squeezes, and tears the material within a closed crushing chamber.

[0003] Existing dead pig crushing equipment generally suffers from the following prominent problems when crushing dead pigs containing a large amount of bone: 1. Prone to bone jamming: During the body crushing process, hard or unusually shaped bones can easily become stuck in the crushing blades or cavities, forcing the equipment to stop. 2. Reliance on manual intervention to resolve malfunctions: There is a lack of effective automatic handling mechanisms after jamming occurs. Operators must manually clean and remove the stuck bones after stopping the machine, which is cumbersome and inefficient. 3. Lack of equipment protection mechanisms: No effective jamming protection device is installed. If the jamming is not resolved in time, the drive motor will continue to operate under overload, easily leading to serious damage such as motor overheating and burnout. 4. Significant safety hazards: When operators enter the crusher for manual cleaning, they face extremely high safety risks such as contact with rotating blades and mechanical injury. Utility Model Content

[0004] This utility model aims to explain at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A dead pig crushing device with automatic reversal function includes a frame with a crushing chamber. A drive motor is mounted on the frame and connected to a reducer via a coupling. The output shaft of the reducer is connected to a main shaft extending into the crushing chamber. Multiple sets of moving blades are evenly arranged on the main shaft. The power input terminal of the drive motor is connected to a current sensor. A torque sensor is installed on the input or output shaft of the reducer. A speed sensor is installed on the end of the main shaft away from the reducer. The current sensor, torque sensor, and speed sensor are all connected to a PLC control module via wires. The PLC control module is communicatively connected to the motor forward and reverse rotation actuator, and the motor forward and reverse rotation actuator is communicatively connected to the control terminal of the drive motor.

[0006] As a further embodiment of this utility model, the top of the crushing chamber is provided with a feed inlet.

[0007] As a further embodiment of this utility model, the bottom of the crushing chamber is provided with a discharge port.

[0008] As a further embodiment of this utility model: the inner wall of the crushing chamber is provided with multiple sets of fixed blades, and multiple sets of moving blades and multiple sets of fixed blades are alternately distributed along the axial direction of the main shaft.

[0009] As a further embodiment of this utility model: the PLC control module and the motor forward and reverse rotation actuator are both mounted on the frame.

[0010] As a further embodiment of this utility model: the frame is also equipped with an audible and visual alarm, which is connected to the PLC control module via wires.

[0011] As a further embodiment of this utility model: the frame is also provided with a human-machine interface, which is connected to the PLC control module via wires.

[0012] As a further embodiment of this utility model, the motor forward and reverse rotation actuator is a frequency converter or a servo driver.

[0013] As a further embodiment of this utility model, the frame is provided with a reinforcing tie rod.

[0014] As a further embodiment of this utility model, the bottom end of the frame is provided with a shock-absorbing pad.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This invention possesses extremely strong equipment protection capabilities. By monitoring torque, current, and speed in real time, and controlling the equipment's operating status in real time via PLC, the detection, shutdown, reversal, and recovery processes are all completed automatically. This achieves automatic handling of jamming faults, completely avoiding the need for operators to enter dangerous areas for manual cleaning, eliminating the safety hazards of manually cleaning the crushing chamber, effectively protecting core components such as the drive motor, reducer, cutters, and main shaft from damage, extending the equipment's service life, and improving the equipment's safety, reliability, operating efficiency, and automation level. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a dead pig crushing device with automatic reversal function.

[0017] In the diagram: 1. Frame; 2. Drive motor; 3. Reducer; 4. Crushing chamber; 5. Feed inlet; 6. Discharge outlet; 7. Main shaft; 8. Moving blade; 9. Fixed blade; 10. Torque sensor; 11. PLC control module; 12. Human-machine interface; 13. Motor forward and reverse rotation actuator; 14. Audible and visual alarm; 15. Speed ​​sensor; 16. Current sensor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] This invention provides a dead pig crushing device with an automatic reversal function when stuck. By integrating real-time status monitoring and intelligent control technology based on a programmable logic controller (PLC), the device can automatically detect stuck signals and instantly trigger a reversal action to expel foreign objects, thereby achieving fully automated unblocking and significantly improving the safety, reliability, and working efficiency of the equipment.

[0021] Please see Figure 1 A dead pig crushing device with automatic reversal function includes a frame 1, a crushing chamber 4 on the frame 1, a drive motor 2 mounted on the frame 1, the drive motor 2 being a high-torque three-phase asynchronous motor, the drive motor 2 being connected to a reducer 3 via a coupling, the output shaft of the reducer 3 being connected to a main shaft 7 extending into the crushing chamber 4, multiple sets of moving blades 8 being evenly arranged on the main shaft, and multiple sets of fixed blades 9 being provided on the inner wall of the crushing chamber 4, the multiple sets of moving blades 8 and the multiple sets of fixed blades 9 being alternately distributed along the axial direction of the main shaft 7, the moving blades 8 and the fixed blades 9 being arranged in cooperation to form a shearing combination, the top of the crushing chamber 4 being provided with a feed inlet 5, and the bottom of the crushing chamber 4 being provided with a discharge outlet 6.

[0022] The power input terminal of the drive motor 2 is connected to the current sensor 16, which is used to detect the real-time operating current of the motor.

[0023] A torque sensor 10 is provided on the input or output shaft of the reducer 3. The torque sensor 10 is used to detect the real-time torque borne by the transmission system.

[0024] A speed sensor 15 is installed on the end of the main shaft 7 away from the reducer 3. The speed sensor 15 is used to detect the real-time speed of the rotor.

[0025] The current sensor 16, torque sensor 10, and speed sensor 15 are all connected to the PLC control module 11 via wires. The PLC control module 11 is connected to the motor forward and reverse rotation actuator 13, and the motor forward and reverse rotation actuator 13 is connected to the control terminal of the drive motor 2.

[0026] The PLC control module 11 and the motor forward and reverse rotation actuator 13 are both mounted on the frame 1.

[0027] The rack 1 is also equipped with a human-machine interface 12 and an audible and visual alarm 14. The human-machine interface 12 and the audible and visual alarm 14 are connected to the PLC control module 11 via wires.

[0028] The forward and reverse rotation actuator 13 of the motor is a frequency converter or servo drive.

[0029] The frame 1 is equipped with reinforcing braces to ensure the stability of the frame.

[0030] The bottom of the frame 1 is equipped with a shock-absorbing pad to reduce damage caused by vibration during operation.

[0031] The human-machine interface 12 is used to display real-time torque, current, speed, and equipment status, and allows operators to set and modify threshold parameters such as torque and current. The torque threshold is based on the safety upper limit set by the rated torque of the equipment; the current threshold is based on the overload upper limit set by the rated current of the motor; and the lower limit of the speed threshold is used to determine whether the rotor is about to stop.

[0032] Its workflow is as follows: After the equipment is powered on, it is started through the human-machine interface 12. The PLC control module 11 controls the drive motor 2 to drive the rotor to rotate normally in the forward direction. The current sensor 16, torque sensor 10, and speed sensor 15 start working and continuously send real-time data to the PLC control module 11.

[0033] The CPU inside the PLC control module 11 continuously scans these data and performs logical judgments. The control logic of the PLC is as follows: it receives signal data from torque, current, and speed sensors in real time and performs comprehensive calculations and judgments. When the real-time torque value and / or real-time current value are detected to continuously exceed their corresponding thresholds for a preset time, and the real-time speed value is simultaneously detected to be lower than the lower limit of the speed threshold, the PLC determines that the crusher has "stuck" fault.

[0034] Normal state: If all monitored values ​​of current, torque and speed are within the preset safety threshold range, the equipment will continue to operate normally.

[0035] Jam detection: The PLC continuously compares real-time values ​​with its threshold values. In this example, the torque threshold is set to 120% of the rated value, the current threshold to 150% of the rated current, and the lower limit of speed to 20% of the rated speed. When the PLC detects that the real-time torque is >120% and the real-time current is >150%, and the real-time speed is <20%, and this state continues for more than T1 (set to 1 second), it immediately determines that the PLC is "jammed".

[0036] Perform the card unlocking process: a. Instantaneous shutdown: The PLC immediately sends a "free stop" or "emergency stop" command to the frequency converter 13, and the motor 2 stops rotating instantly.

[0037] b. Short-term reversal: After a 0.3-second delay following shutdown, the PLC sends a command to the frequency converter 13 to set the output torque to 100% of the rated torque, controlling the motor 2 to run in reverse for a duration T2 of 2 seconds.

[0038] c. Attempt to recover: After the 2-second reverse rotation ends, the PLC controls the frequency converter 13 to switch back to forward rotation mode and restart the motor 2.

[0039] Result judgment: If the equipment resumes normal operation and the monitoring parameters return to normal values, the card is successfully unlocked, the system continues to run, and the PLC records a "card unlocked" event on the HMI.

[0040] If the system freezes again immediately after restarting, the PLC will repeat the above reverse unlocking process, but it will repeat a maximum of 3 times.

[0041] If the card cannot be unblocked after three consecutive reversals, the PLC determines that it is "severely stuck and requires manual intervention". The control equipment will eventually stop and the audible and visual alarm 14 will be activated to continuously sound an alarm. At the same time, clear fault information will be displayed on the human-machine interface 12.

[0042] Through the above methods, this utility model achieves fully automatic and intelligent handling of the dead pig crusher jamming fault, perfectly solving all the problems mentioned in the background technology.

[0043] This invention fundamentally eliminates safety hazards, automates the handling of jammed faults, and completely avoids the need for operators to enter dangerous areas for manual cleaning, thus fundamentally eliminating the risk of mechanical injury and electric shock, meeting the highest requirements for safe production. This invention possesses extremely strong equipment protection capabilities. By monitoring torque and current in real time, it can respond within milliseconds of an overload, immediately stopping the machine and effectively protecting core components such as the drive motor, reducer, cutters, and spindle from damage, extending the equipment's service life. This invention significantly reduces downtime. The entire process of detection, shutdown, reversal, and recovery is fully automated, taking only a few seconds. Compared to the tens of minutes or even hours required for traditional manual cleaning, this greatly shortens downtime and improves the continuous operating efficiency and capacity of the production line. This invention enhances automation and intelligence: through PLC integrated control, it achieves real-time monitoring, intelligent decision-making, and automatic execution of equipment operating status, significantly reducing reliance on manpower and the skill requirements for operators. This invention facilitates maintenance and data analysis. The system automatically records all fault events, providing valuable data support for preventative maintenance and fault diagnosis.

[0044] This invention employs an "intelligent reverse unblocking process based on real-time status monitoring." A programmable logic controller (PLC) monitors the equipment's operating status in real time. Upon detecting excessive jamming, the system instantly stops and automatically triggers a short-term reverse action to expel foreign objects, subsequently resuming operation automatically. This process fundamentally eliminates the safety hazards of manually cleaning the crushing chamber, effectively protects the drive motor from damage, significantly reduces downtime due to malfunctions, and substantially improves the equipment's safety, reliability, operating efficiency, and automation level.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects; the scope of this invention is defined by the appended claims rather than the foregoing description; and thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution; this narrative style is merely for clarity; those skilled in the art should consider the specification as a whole; the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dead pig crushing device with automatic reverse function upon jamming, characterized in that, The device includes a frame (1), on which a crushing chamber (4) is provided. A drive motor (2) is installed on the frame (1). The drive motor (2) is connected to a reducer (3) via a coupling. The output shaft of the reducer (3) is connected to a main shaft (7) that extends into the crushing chamber (4). Multiple sets of moving blades (8) are evenly arranged on the main shaft. The power input terminal of the drive motor (2) is connected to a current sensor (16). A torque sensor (10) is provided on the input or output shaft of the reducer (3). A speed sensor (15) is installed on the end of the main shaft (7) away from the reducer (3). The current sensor (16), torque sensor (10), and speed sensor (15) are all connected to a PLC control module (11) via wires. The PLC control module (11) is connected to the motor forward and reverse rotation actuator (13) via communication. The motor forward and reverse rotation actuator (13) is connected to the control terminal of the drive motor (2) via communication.

2. The dead pig crushing device with automatic reverse function upon jamming as described in claim 1, characterized in that, The crushing chamber (4) is provided with a feed inlet (5) at the top.

3. A dead pig crushing device with automatic reverse function upon jamming, as described in claim 2, is characterized in that, The bottom of the crushing chamber (4) is provided with a discharge port (6).

4. A dead pig crushing device with automatic reverse function upon jamming, as described in claim 3, is characterized in that, The inner wall of the crushing chamber (4) is provided with multiple sets of fixed blades (9), and multiple sets of moving blades (8) and multiple sets of fixed blades (9) are alternately distributed along the axial direction of the main shaft (7).

5. A dead pig crushing device with automatic reverse function upon jamming, as described in claim 1, characterized in that, The PLC control module (11) and the motor forward and reverse rotation actuator (13) are both mounted on the frame (1).

6. The dead pig crushing device with the stuck automatic reverse function according to claim 4, characterized in that, The frame (1) is also equipped with an audible and visual alarm (14), which is connected to the PLC control module (11) via wires.

7. The dead pig crushing device with the stuck automatic reverse function according to claim 6, characterized in that, The frame (1) is also provided with a human-machine interface (12), which is connected to the PLC control module (11) via wires.

8. A dead pig crushing device with automatic reverse function upon jamming, as described in claim 7, characterized in that, The motor forward and reverse rotation actuator (13) is a frequency converter or servo drive.

9. A dead pig crushing device with automatic reverse function upon jamming, as described in claim 1, characterized in that, The frame (1) is provided with a reinforcing tie rod.

10. A dead pig crushing device with automatic reverse function upon jamming, as described in claim 9, characterized in that, The frame (1) is provided with a shock-absorbing pad at the bottom.

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