A crushing control system and control method of a medical waste treatment apparatus

Abstract

The application provides a crushing control system and control method of a medical waste treatment equipment, and the control system comprises: an overload protection device electrically connected with a crusher; a controller electrically connected with the crusher and the overload protection device respectively; a reverse control device electrically connected with the crusher and the controller respectively; the controller obtains a first working current of the crusher through the overload protection device; a first control instruction is generated according to the first working current; a second control instruction is generated after the crusher rotates in a first direction for a preset time through the reverse control device according to the first control instruction; the crusher rotates in a second direction through the reverse control device according to the second control instruction; and the first direction is opposite to the second direction. The scheme can automatically reverse when the motor is overloaded, effectively protect the motor and related equipment, and improve the working efficiency of the equipment.

Description

Technical Field

[0001] This invention relates to the field of control technology for medical waste treatment equipment, and in particular to a crushing control system and control method for medical waste treatment equipment. Background Technology

[0002] In the medical waste treatment process, the shredder is a key component used to break medical waste into smaller pieces for subsequent processing. However, existing shredders may encounter hard objects or foreign objects (such as medical paper, gauze, etc.) during processing, causing the cutter head to jam or be damaged, and the motor to overload. Traditional protection measures usually involve cutting off the power supply with fuses or circuit breakers, but this will cause equipment operation to be interrupted, affecting processing efficiency. Summary of the Invention

[0003] This invention provides a crushing control system and control method for medical waste treatment equipment, which solves the problem that traditional protection measures require power cut-off, resulting in equipment operation interruption and affecting processing efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0005] A crushing control system for medical waste treatment equipment includes:

[0006] An overload protection device electrically connected to the crusher;

[0007] A controller electrically connected to the crusher and the overload protection device respectively;

[0008] A reversing control device electrically connected to the crusher and the controller respectively;

[0009] The controller obtains the first operating current of the crusher through the overload protection device;

[0010] Based on the first operating current, a first control command is generated;

[0011] According to the first control command, after the crusher is controlled to rotate in the first direction for a preset time by the reversing control device, a second control command is generated;

[0012] According to the second control command, the crusher is controlled to rotate in a second direction by the reversing control device; wherein the first direction is opposite to the second direction.

[0013] Optionally, the crusher includes:

[0014] Cutter assembly;

[0015] A drive motor connected to the crusher blade assembly; the drive motor is electrically connected to the overload protection device;

[0016] A speed reducer that is electrically connected to the drive motor and constrains the speed of the drive motor.

[0017] When the drive motor drives the crushing blade assembly to perform crushing work, the controller obtains the first operating current of the drive motor through the overload protection device.

[0018] Optionally, the drive motor is connected to the crushing blade assembly via a bracket.

[0019] Optionally, the reversing control device includes:

[0020] The first three-phase power line, the second three-phase power line, and the third three-phase power line are electrically connected to the drive motor of the crusher;

[0021] A forward / reverse control circuit connected to the first three-phase power line, the second three-phase power line and the third three-phase power line;

[0022] The motor switch control circuit is electrically connected to the forward and reverse rotation control circuit;

[0023] The forward and reverse control circuit controls the forward and reverse rotation of the drive motor by switching the phase sequence of the power supply through the first three-phase power line, the second three-phase power line and the third three-phase power line.

[0024] The motor switch control circuit controls the start or stop of the drive motor through the forward and reverse control circuit and the first three-phase power line, the second three-phase power line and the third three-phase power line.

[0025] Optionally, the forward / reverse control circuit includes:

[0026] First relay and second relay;

[0027] The first three-phase power supply line is electrically connected to the first normally open contact of the first relay;

[0028] The first three-phase power supply line is electrically connected to the second normally closed contact of the second relay;

[0029] The second and third phase power lines are electrically connected to the first normally closed contact of the first relay;

[0030] The second three-phase power supply line is electrically connected to the second normally open contact of the second relay.

[0031] Optionally, the motor switch control circuit includes:

[0032] The third, fourth, and fifth relays;

[0033] Power supply cable for the first motor, power supply cable for the second motor, and power supply cable for the third motor;

[0034] The first three-phase power supply line is electrically connected to the third normally closed contact of the third relay;

[0035] The first three-phase power supply line is electrically connected to the fourth normally closed contact of the fourth relay;

[0036] The second and third phase power lines are electrically connected to the third normally closed contact of the third relay;

[0037] The second and third phase power lines are electrically connected to the fourth normally closed contact of the fourth relay;

[0038] The third three-phase power supply line is electrically connected to the fifth normally open contact of the fifth relay;

[0039] The third three-phase power supply line is electrically connected to the fifth normally closed contact of the fifth relay;

[0040] The first motor power supply line is electrically connected to the third normally open contact of the third relay;

[0041] The second motor power supply line is electrically connected to the fourth normally open contact of the fourth relay;

[0042] The third motor power supply line is electrically connected to the fifth normally open contact of the fifth relay.

[0043] Optionally, the first relay and the second relay are connected in series with the first power supply via wires;

[0044] The third, fourth, and fifth relays are connected in series with the second power supply via wires.

[0045] Optionally, the crushing control system of the medical waste treatment equipment may also include:

[0046] A display device electrically connected to the controller is used to receive and display the operating status of the crusher obtained by the controller.

[0047] Optionally, the crushing control system of the medical waste treatment equipment may also include:

[0048] An alarm device electrically connected to the controller is used to receive the operating status of the crusher obtained by the controller and to issue an alarm.

[0049] Embodiments of the present invention also provide a crushing control method for medical waste treatment equipment, applied to the system described above, the method comprising:

[0050] Obtain the first operating current of the crusher;

[0051] Based on the first operating current, a first control command is generated;

[0052] According to the first control command, after the crusher is controlled to rotate in the first direction for a preset time by the reversing control device, a second control command is generated.

[0053] According to the second control command, the crusher is controlled to rotate in a second direction by the reversing control device, the first direction being opposite to the second direction.

[0054] The above-described solution of the present invention has at least the following beneficial effects:

[0055] The above-described solution of the present invention obtains the first operating current of the crusher through the overload protection device via a controller; generates a first control command based on the first operating current; generates a second control command after controlling the crusher to rotate in a first direction for a preset time via the reversing control device based on the first control command; and controls the crusher to rotate in a second direction via the reversing control device based on the second control command, wherein the first direction is opposite to the second direction. This allows for automatic reversal of the crusher when it is overloaded without interrupting its operation, preventing the cutter head from jamming or being damaged, effectively protecting the crusher, and improving the reliability and processing efficiency of the medical waste treatment equipment. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the architecture of the crushing control system of the medical waste treatment equipment provided in an embodiment of the present invention;

[0057] Figure 2 This is a schematic diagram of the structure of the crusher provided in an embodiment of the present invention;

[0058] Figure 3 This is a schematic diagram of the circuit structure of the inversion control device provided in an embodiment of the present invention;

[0059] Figure 4 This is a schematic diagram of the controller and overload protection device provided in an embodiment of the present invention;

[0060] Figure 5 This is a circuit diagram of a PLC-controlled motor forward and reverse rotation control provided in an embodiment of the present invention;

[0061] Figure 6 This is a ladder diagram of a motor forward and reverse rotation control circuit provided in an embodiment of the present invention;

[0062] Figure 7 This is an external wiring diagram of a PLC provided in an embodiment of the present invention. Detailed Implementation

[0063] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0064] like Figure 1 As shown, an embodiment of the present invention proposes a crushing control system for a medical waste treatment device, comprising:

[0065] Overload protection device 2 is electrically connected to crusher 1;

[0066] A controller 3 is electrically connected to the crusher 1 and the overload protection device 2, respectively.

[0067] A reversing control device 4 is electrically connected to the crusher 1 and the controller 3 respectively;

[0068] The controller 3 obtains the first operating current of the crusher 1 through the overload protection device 2; generates a first control command based on the first operating current; generates a second control command after controlling the crusher 1 to rotate in a first direction for a preset time through the reversing control device 4 based on the first control command; and controls the crusher 1 to rotate in a second direction through the reversing control device 4 based on the second control command; wherein the first direction is opposite to the second direction.

[0069] In this embodiment, the overload protection device 2 of the crushing control system of the medical waste treatment equipment is used to monitor the working current of the crusher 1 in real time and transmit the real-time working current data of the crusher 1 to the controller 3. The controller 3 analyzes and processes the real-time working current of the crusher 1. When the controller 3 determines that the real-time working current (i.e., the first working current mentioned above) is within the set working current threshold, it controls the crusher 1 to operate normally. When the real-time working current of the crusher 1 exceeds the set working current threshold, it is determined that the crusher 1 may encounter hard objects or foreign objects during the processing, resulting in a jamming situation and an increase in the load of the crusher 1. At this time, the controller 3 immediately sends a reversal command (i.e., the first control command mentioned above) to the reversal control device 4. The reversal control device 4 receives the command and controls the crusher 1 to reverse (i.e., rotate in the first direction mentioned above) for a predetermined reversal time to release the load of the crusher 1 and help clear the jammed material or foreign objects. After the reversal process is completed, the controller 3 will re-monitor and judge the working current of the crusher 1. If the current of the crusher 1 is normal, the controller 3 sends a forward rotation command (i.e., the second control command mentioned above) to control the crusher 1 to start running again. At this time, the crusher 1 rotates in the forward direction (i.e., rotates in the second direction mentioned above) to perform crushing work.

[0070] The crushing control system of the medical waste treatment equipment in this embodiment can automatically reverse when the crusher is overloaded without interrupting the operation of the equipment, so as to avoid the equipment cutter head getting stuck or damaged, effectively protect the crusher, and improve the reliability and processing efficiency of the medical waste treatment equipment.

[0071] like Figure 2 As shown, in an optional embodiment of the present invention, the crusher 1 includes:

[0072] Cutter assembly 11;

[0073] A drive motor 12 is connected to the crusher blade assembly 11; the drive motor 12 is electrically connected to the overload protection device 2.

[0074] A speed reducer 13 is electrically connected to the drive motor 12 and constrains the speed of the drive motor 12.

[0075] When the drive motor 12 drives the crushing blade assembly 11 to perform crushing work, the controller 3 obtains the first operating current of the drive motor 12 through the overload protection device 2.

[0076] In this embodiment, the crushing blade assembly 11 is the core component of the crusher 1, used to crush materials. The crushing blade assembly typically consists of multiple blades that, through a specific arrangement and rotation, cut, tear, or impact the input material into smaller particles. The drive motor 12 is the power source of the crusher 1 and is fixedly connected to the crushing blade assembly 11 (e.g., through direct connection, belt drive, coupling connection, or other transmission structures) to ensure efficient power transmission to the crushing blade assembly 11, providing the necessary torque and speed to drive it in operation.

[0077] The drive motor 12 is connected to an overload protection device 2, which is a safety device, such as a current sensor, used to monitor the operating status of the drive motor 12. When the drive motor 12 may be damaged due to overload, the overload protection device 2 will cut off the power supply or reduce the motor power in time to protect the drive motor 12 from damage.

[0078] The reducer 13 is electrically connected to the drive motor 12. Its main function is to reduce the motor's speed while increasing torque. This is crucial for the crusher 1 because the crushing process typically requires significant torque to cut or tear materials. The drive motor 12 often operates at excessively high speeds, and direct connection to the crusher blade assembly 11 would lead to premature blade wear or ineffective material crushing. The reducer 13 allows adjustment of the drive motor 12's output characteristics, making it more suitable for the crushing operation.

[0079] When the drive motor 12 starts working, it drives the crusher blade assembly 11 to rotate through the transmission structure. At the same time, the overload protection device 2 monitors the operating current of the drive motor 12 in real time and transmits the operating current data to the controller 3 to ensure that the drive motor 12 operates within a safe range. If the current value is too high, it indicates that the motor may be under excessive load. At this time, the controller 3 will issue a warning and control the drive motor 12 to reverse to protect the motor and the crusher from damage.

[0080] like Figure 2 As shown, in an optional embodiment of the present invention, the drive motor 12 is fixedly connected to the crushing blade assembly 11 via a bracket 14.

[0081] In this embodiment, the bracket 14 serves as a fixing device to fix the drive motor 12 and the crushing blade assembly 11. First, the crushing blade assembly 11 is installed on the bracket 14, and its position and direction are adjusted. The shaft of the crushing blade assembly 11 is aligned with that of the drive motor 12, and then the drive motor 12 is fixedly installed on the bracket 14.

[0082] The bracket 14 contains a transmission device for connecting the crusher assembly 11 and the drive motor 12. Optionally, belt drive or coupling drive can be used. If belt drive is used, the shaft of the drive motor 12 is connected to the pulley, and then the belt is connected to the shaft of the crusher assembly 11. Adjusting the belt tension ensures transmission efficiency and smoothness. If coupling drive is used, the shaft of the drive motor 12 is connected to one end of the coupling, and the other end of the coupling is connected to the shaft of the crusher assembly 11. Ensuring the accuracy and coaxiality of the coupling avoids vibration and noise during transmission.

[0083] like Figure 3 As shown, in an optional embodiment of the present invention, the reversal control device 4 includes:

[0084] The first three-phase power line L1, the second three-phase power line L2, and the third three-phase power line L3 are electrically connected to the drive motor 12 of the crusher 1.

[0085] A forward / reverse control circuit 41 connected to the first three-phase power line L1, the second three-phase power line L2 and the third three-phase power line L3;

[0086] Motor switch control circuit 42 is electrically connected to the forward / reverse control circuit 41;

[0087] The forward and reverse control circuit 41 controls the forward and reverse rotation of the drive motor by switching the phase sequence of the power supply through the first three-phase power line L1, the second three-phase power line L2 and the third three-phase power line L3.

[0088] The motor switch control circuit 42 controls the start or stop of the drive motor through the forward and reverse control circuit 41 and the first three-phase power line L1, the second three-phase power line L2 and the third three-phase power line L3.

[0089] In this embodiment, the drive motor of the crusher 1 is a three-phase asynchronous motor. The first three-phase power line L1, the second three-phase power line L2 and the third three-phase power line L3 are electrically connected to the drive motor 12 of the crusher 1 to provide three-phase power for the crusher 1 to drive its operation.

[0090] The forward and reverse control circuit 41 is electrically connected to the three-phase power lines L1, L2, and L3 mentioned above, and is used to switch the phase sequence of the power supply to control the forward and reverse rotation of the drive motor 12.

[0091] The motor switch control circuit 42 is electrically connected to the forward and reverse rotation control circuit 41 and is used to control the start and stop of the drive motor 12.

[0092] The drive motor 12 of the crusher 1 is powered by the first three-phase power line L1, the second three-phase power line L2, and the third three-phase power line L3. The forward and reverse rotation, start and stop of the drive motor 12 are controlled by the forward and reverse rotation control circuit 41 and the motor switch control circuit 42. This design allows the crusher to flexibly adjust its working state as needed.

[0093] like Figure 3 As shown, in an optional embodiment of the present invention, the forward / reverse control circuit 41 includes:

[0094] First relay KJ1 and second relay KJ2;

[0095] The first three-phase power line L1 is electrically connected to the first normally open contact NO1 of the first relay KJ1;

[0096] The first three-phase power line L1 is electrically connected to the second normally closed contact NC2 of the second relay KJ2;

[0097] The second three-phase power line L2 is electrically connected to the first normally closed contact NC1 of the first relay KJ1;

[0098] The second three-phase power line L2 is electrically connected to the second normally open contact NO2 of the second relay KJ2.

[0099] In an optional embodiment of the present invention, the motor switch control circuit 42 includes:

[0100] The third relay is KJ3, the fourth relay is KJ4, and the fifth relay is KJ5;

[0101] First motor power line U1, second motor power line U2 and third motor power line U3;

[0102] The first three-phase power line L1 is electrically connected to the third normally closed contact NC3 of the third relay KJ3;

[0103] The first three-phase power line L1 is electrically connected to the fourth normally closed contact NC4 of the fourth relay KJ4;

[0104] The second three-phase power line L2 is electrically connected to the third normally closed contact NC3 of the third relay KJ3;

[0105] The second three-phase power line L2 is electrically connected to the fourth normally closed contact NC4 of the fourth relay KJ4;

[0106] The third three-phase power line L3 is electrically connected to the fifth normally open contact NO5 of the fifth relay KJ5;

[0107] The third three-phase power line L3 is electrically connected to the fifth normally closed contact NC5 of the fifth relay KJ5.

[0108] The first motor power supply line U1 is electrically connected to the third normally open contact NO3 of the third relay KJ3;

[0109] The second motor power supply line U2 is electrically connected to the fourth normally open contact NO4 of the fourth relay KJ4;

[0110] The third motor power supply line U3 is electrically connected to the fifth normally open contact NO5 of the fifth relay KJ5.

[0111] In the above embodiments, the forward and reverse rotation control circuit 41 includes a first relay KJ1 and a second relay KJ2, and the motor switch control circuit 42 includes a third relay KJ3, a fourth relay KJ4 and a fifth relay KJ5.

[0112] The first three-phase power line L1 is electrically connected in sequence to the first normally open contact NO1 of the first relay KJ1, the normally open contact NO3 of the third relay KJ3, and the first motor power line U1 via wires; the first three-phase power line L1 is electrically connected in sequence to the normally open contact NO1 of the first relay KJ1 and the third normally closed contact NC3 of the third relay KJ3 via wires; the first three-phase power line L1 is electrically connected in sequence to the second normally closed contact NC2 of the second relay KJ2, the fourth normally closed contact NC4 of the fourth relay KJ4, and the second motor power line U2 via wires; the first three-phase power line L1 is electrically connected in sequence to the second normally closed contact NC2 of the second relay KJ2 and the third normally closed contact NC3 of the third relay KJ3 via wires.

[0113] The second three-phase power line L2 is electrically connected in sequence to the first normally closed contact NC1 of the first relay KJ1, the third normally open contact NO3 of the third relay KJ3, and the first motor power line U1 via wires; the second three-phase power line L2 is electrically connected in sequence to the first normally closed contact NC1 of the first relay KJ1 and the third normally closed contact NC3 of the third relay KJ3 via wires; the second three-phase power line L2 is electrically connected in sequence to the second normally open contact NO2 of the second relay KJ2, the fourth normally open contact NO4 of the fourth relay KJ4, and the second motor power line U2 via wires; the second three-phase power line L2 is electrically connected in sequence to the second normally open contact NO2 of the second relay KJ2 and the fourth normally closed contact NC4 of the fourth relay KJ4 via wires.

[0114] The third three-phase power line L3 is electrically connected to the fifth normally open contact NO5 of the fifth relay KJ5 and the third motor power line U3 in sequence via wires.

[0115] The power supply lines U1, U2, and U3 of the first motor are connected to the drive motor 12 points through the motor junction box 15.

[0116] When the motor is rotating in the forward direction: When both the first power supply DC1 and the second power supply DC2 are powered on, the first normally open contact NO1 of the first relay KJ1, the second normally open contact NO2 of the second relay KJ2, the third normally open contact NO3 of the third relay KJ3, the second normally open contact NO4 of the fourth relay KJ4, and the fifth normally open contact NO5 of the fifth relay KJ5 are all closed. The first normally closed contact NC1 of the first relay KJ1 and the second normally closed contact NC2 of the second relay KJ2 are all open. The first three-phase power line L1 is connected to the first motor power line U1, the second three-phase power line L2 is connected to the second motor power line U2, and the third three-phase power line L3 is connected to the third motor power line U3. The drive motor 12 is powered on and rotates in the forward direction at this time.

[0117] Motor reverse operation: The first power supply DC1 is de-energized, the second power supply DC2 is energized, the first normally closed contact NC1 of the first relay KJ1, the second normally closed contact NC2 of the second relay KJ2, the third normally open contact NO3 of the third relay KJ3, the fourth normally open contact NO4 of the fourth relay KJ4, and the fifth normally open contact NO5 of the fifth relay KJ5 are all closed, the first normally open contact NO1 of the first relay KJ1 and the second normally open contact NO2 of the second relay KJ2 are all open, the first three-phase power line L1 is connected to the second motor power line U2, the second three-phase power line L2 is connected to the first motor power line U1, and the third three-phase power line L3 is connected to the third motor power line U3. The drive motor 12 is powered on and reverses at this time.

[0118] In an optional embodiment of the present invention, the first relay KJ1 and the second relay KJ2 are connected in series with the first power supply DC1 via wires;

[0119] The third relay KJ3, the fourth relay KJ4, and the fifth relay KJ5 are connected in series with the second power supply DC2 via wires.

[0120] In this embodiment, the first relay KJ1 and the second relay KJ2 are connected in series with the first power supply DC1 through wires, and the third relay KJ3, the fourth relay KJ4 and the fifth relay KJ5 are connected in series with the second power supply DC2 through wires. The first relay KJ1, the second relay KJ2, the third relay KJ3, the fourth relay KJ4 and the fifth relay KJ5 are all single-pole switch relays.

[0121] Of course, the above-mentioned reversal control device 4 can also use programmable logic control to control the reverse operation of the drive motor, and control the duration of the reverse operation of the drive motor 12 according to the duration set by the timer.

[0122] In one possible implementation, a PLC (Programmable Logic Controller) is electrically connected to the motor control circuit in the reversing control device 4 to control the forward and reverse rotation of the drive motor 12. For example... Figure 5 The diagram shown is a PLC-controlled circuit diagram for forward and reverse rotation of a motor. Figure 6 The diagram shown is a ladder diagram of the motor forward and reverse rotation control circuit. In this embodiment, coil drive commands are used to control the motor's start, reverse, and stop. Figure 5 In the diagram, B0 is the motor forward control coil, B1 is the motor reverse control coil, SB1 is the motor stop switch, SB2 is the forward start switch, and SB3 is the reverse start switch. Coils A0, A1, A2, B0 (motor forward control coil), and B1 (motor reverse control coil) are all located in the PLC. The forward start switch SB2 is electrically connected to coil A0, coil A0 is electrically connected to the motor forward control coil B0, the reverse start switch SB3 is electrically connected to coil A1, the motor reverse control coil B1 is electrically connected to coil A1, the motor stop switch SB1 is electrically connected to coil A2, coil A2 is electrically connected to coil B0, and both coils B0 and B1 are electrically connected to the drive motor 12.

[0123] When the motor is running in the forward direction: the forward start switch SB2 is electrically connected to the coil A0. When the forward start switch SB2 is closed, the normally open contact of the coil A0 is closed, the coil B0 is closed, and the coil of the first contactor KM1 is energized, and the motor starts to run in the forward direction.

[0124] Motor stops working: The motor stop switch SB1 is electrically connected to the coil A2. When the stop switch SB1 is closed, the normally closed contact of the coil A2 is disconnected, causing the coil B0 to lose power and driving the motor 12 to stop running;

[0125] Motor reverse operation: As Figure 6 shown, the normally closed contacts of the motor forward control coil B0 and the motor reverse control coil B1 are respectively connected in series with the coils of each other, which can ensure that they will not be in the on state at the same time. Therefore, the coils of the first contactor KM1 and the second contactor KM2 will not be powered on at the same time, achieving electrical interlock of the circuit. In addition, for the convenience of operation and to ensure that the motor forward control coil B0 and the motor reverse control coil B1 will not be in the on state at the same time, the normally closed contact of the coil A1 is also connected in series with the coil of the motor forward control coil B0, and the normally closed contact of the coil A0 is connected in series with the coil of the motor reverse control coil B1. When B0 is in the on state and the motor is running forward at this time, if you want to change to reverse operation, you can close the reverse start switch SB3 without closing the motor stop switch SB1. The coil A1 is turned on, and its normally closed contact is disconnected, causing the motor forward control coil B0 to be disconnected. At the same time, the normally open contact of the coil A1 is turned on, causing the motor reverse control coil B1 to be turned on, driving the motor 12 to change from forward to reverse.

[0126] As Figure 7 shown is the external wiring diagram of the PLC. If the main contact of a certain contactor is welded by the arc generated when the power is cut off due to excessive main circuit current or poor quality of the contactor, and its main contact is still on after the coil is powered off. At this time, if the coil of another contactor is powered on, it will still cause a three-phase power short circuit accident. To prevent this situation, in this embodiment, a hardware interlock circuit composed of the auxiliary normally closed contacts of the first contactor KM1 and the second contactor KM2 is set outside the PLC. Assuming that the main contact of the first contactor KM1 is welded by the arc, the auxiliary normally closed contact in series with the coil of the second contactor KM2 is in the off state at this time. Therefore, the coil of the second contactor KM2 cannot be powered on.

[0127] As Figure 5 shown, FR in

[0128] In an optional embodiment of the present invention, the crushing control system of the medical waste treatment equipment further includes:

[0129] A display device 5 electrically connected to the controller 3, which is used to receive the working state of the crusher 1 obtained by the controller 3 and display it.

[0130] In this embodiment, the crushing control system of the medical waste treatment equipment further includes a display device 5 electrically connected to the controller 3 to receive and display the working state of the crusher 1. Specifically, the display device 5 is a device capable of displaying information. It can be a touch screen, a liquid crystal display, an LED display, a digital tube or other types of display devices. Its main function is to present the received information in a visual way, enabling users to intuitively understand the state or operating parameters of the equipment. After receiving the information sent by the controller 3, the display device 5 will display this information in the form of numbers, graphics, words, etc. By observing the information on the display device 5, users can intuitively understand the current working state of the crusher 1, such as whether the motor is running normally, what the crushing efficiency is, whether shutdown maintenance is required, etc., so as to ensure the safe and efficient operation of the crusher.

[0131] The display device 5 can be connected by wire (such as through a cable or data line), or can be wirelessly connected (such as through wireless communication technologies such as Bluetooth, Wi-Fi, etc.). The electrical connection ensures that the controller 3 can transmit information to the display device 5.

[0132] In an optional embodiment of the present invention, the crushing control system of the medical waste treatment equipment further includes:

[0133] An alarm device 6 electrically connected to the controller 3, which is used to receive the working state of the crusher 1 obtained by the controller 3 and give an alarm.

[0134] In this embodiment, the crushing control system of the medical waste treatment equipment further includes:

[0135] An alarm device 6 electrically connected to the controller 3 to receive and respond to the working state information of the crusher 1, and trigger an alarm mechanism when detecting an abnormal or dangerous situation. Specifically, the alarm device 6 is a device capable of emitting an alarm signal. It can be a sound alarm (such as a buzzer, a bell), a light alarm (such as a flash light, an LED light), or a combined alarm that includes both sound and light signals. Its main function is to remind the staff to pay attention and take corresponding measures by emitting sound, light or other forms of signals when detecting an abnormal or dangerous situation.

[0136] The alarm device 6 is electrically connected to the controller 3. This connection can be a wired connection (such as through a cable, a data line, etc.) or a wireless connection (such as through wireless communication technologies such as Bluetooth, Wi-Fi, Zigbee, etc.). The electrical connection ensures that the controller 3 can transmit the detected working state information of the crusher 1 to the alarm device 6 in real time. When the controller 3 detects that the working current of the crusher 1 exceeds the normal range, that is, when it is judged as an abnormal or dangerous situation, it will send this information to the alarm device 6 through the electrical connection. Thus, it ensures the safe and efficient operation of the crusher, and at the same time protects the personal safety of the staff.

[0137] As Figure 4 shown, in an optional embodiment of the present invention, the controller 3 uses a controller with the product model 6ES7288-3AE04-0AA0, and the overload protection device 2 uses a current detection transmitter. The overload protection device 2 is electrically connected to the controller 3, and the real-time working current of the crusher 1 detected by the overload protection device 2 is transmitted to the controller 3 as a current data signal.

[0138] In the above embodiment of the present invention, the crushing control system of the medical waste treatment equipment, through the cooperation of the crusher 1, the overload protection device 2, the controller 3, the reverse control device 4, the display device 5, and the alarm device 6, can handle the overload condition of the crusher without interrupting the operation of the equipment, and can make the crusher automatically reverse when overloaded, avoiding the cutter head of the equipment from getting stuck or damaged, effectively protecting the crusher, and improving the reliability and processing efficiency of the medical waste treatment equipment.

[0139] The embodiment of the present invention further provides a crushing control method for a medical waste treatment equipment, which is applied to the system described in the above embodiment. The method includes:

[0140] Step 1, obtaining the first working current of the crusher 1;

[0141] Step 2, generating a first control instruction according to the first working current;

[0142] Step 3, according to the first control instruction, controlling the crusher 1 to rotate in the first direction for a preset time through the reverse control device 4, and then generating a second control instruction;

[0143] Step 4, according to the second control instruction, controlling the crusher 1 to rotate in the second direction through the reverse control device 4, where the first direction is opposite to the second direction.

[0144] In this embodiment, the controller 3 monitors the first working current of the crusher 1 through the overload protection device 2 electrically connected to the crusher 1. The controller 3 judges the first working current. When the first working current is greater than the preset current threshold, a first control instruction is generated to control the power supply of the crusher 1 to be disconnected, and the reverse control device 4 is controlled to start. The reverse control device 4 controls the crusher 1 to rotate in the first direction for a preset time.

[0145] Specifically, the first working current is the working current when the crusher 1 rotates forward to crush medical waste materials. The preset current threshold is set to 12 mA, the first direction is the reverse rotation direction of the crusher 1, and the preset time is set to 3 seconds of reverse rotation time.

[0146] After the crusher 1 rotates in the first direction for a preset time, the controller 3 obtains the second working current of the crusher 1. The controller 3 judges the second working current. When the second working current is still greater than the preset current threshold, it controls the crusher 1 to continue to reverse. When the second working current is less than or equal to the preset current threshold, it generates a second control instruction to make the reverse control device 4 turn off, and controls the crusher 1 to run again. The crusher 1 rotates in the first direction to resume the crushing work.

[0147] In the crushing control method of the medical waste treatment equipment of this embodiment, the controller 3 automatically judges and controls the crusher 1 to automatically reverse when overloaded according to the real-time working current of the crusher 1, which can effectively prevent the motor from being damaged and improve the reliability and processing efficiency of the medical waste treatment equipment.

[0148] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0149] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0150] In the embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection can be through some interfaces. The indirect coupling or communication connection of the devices or units can be in electrical, mechanical or other forms.

[0151] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0152] In addition, in each embodiment of the present invention, each functional unit may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

[0153] If the above-mentioned functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, RO41, RA41, magnetic disks, or optical discs that can store program codes.

[0154] In addition, it should be noted that in the device and method of the present invention, obviously, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present invention. And, the steps of performing the above series of processes can be naturally executed in chronological order according to the described order, but it is not necessary to be executed in chronological order. Some steps can be executed in parallel or independently of each other. For those of ordinary skill in the art, it is understandable that all or any steps or components of the method and device of the present invention can be implemented in any computing device (including a processor, a storage medium, etc.) or a network of computing devices in the form of hardware, firmware, software, or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

[0155] Therefore, the object of the present invention can also be achieved by running a program or a set of programs on any computing device. The computing device may be a well-known general-purpose device. Therefore, the object of the present invention can also be achieved only by providing a program product containing program codes for implementing the method or device. That is to say, such a program product also constitutes the present invention, and the storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium can be any well-known storage medium or any storage medium developed in the future. It should also be noted that in the device and method of the present invention, obviously, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present invention. And, the steps of performing the above series of processes can be naturally executed in chronological order according to the described order, but it is not necessary to be executed in chronological order. Some steps can be executed in parallel or independently of each other.

[0156] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A crushing control system for medical waste treatment equipment, characterized in that, include: Overload protection device (2) electrically connected to the crusher (1); A controller (3) is electrically connected to the crusher (1) and the overload protection device (2) respectively. A reversing control device (4) is electrically connected to the crusher (1) and the controller (3) respectively. The controller (3) obtains the first operating current of the crusher (1) through the overload protection device (2); generates a first control command based on the first operating current; generates a second control command after controlling the crusher (1) to rotate in the first direction for a preset time through the reversing control device (4) based on the first control command; and controls the crusher (1) to rotate in the second direction through the reversing control device (4) based on the second control command; wherein the first direction is opposite to the second direction. The crusher (1) includes: Crusher assembly (11); A drive motor (12) is connected to the crusher blade assembly (11), and the drive motor (12) is electrically connected to the overload protection device (2); A speed reducer (13) electrically connected to the drive motor (12) and constraining the speed of the drive motor (12). When the drive motor (12) drives the crushing blade group (11) to perform crushing work, the controller (3) obtains the first operating current of the drive motor (12) through the overload protection device (2); The reversal control device (4) includes: The first three-phase power line (L1), the second three-phase power line (L2) and the third three-phase power line (L3) are electrically connected to the drive motor (12) of the crusher (1). A forward / reverse control circuit (41) connected to the first three-phase power line (L1), the second three-phase power line (L2) and the third three-phase power line (L3). Motor switch control circuit (42) electrically connected to the forward and reverse control circuit (41); The forward and reverse control circuit (41) controls the forward and reverse rotation of the drive motor by switching the phase sequence of the power supply through the first three-phase power supply line (L1), the second three-phase power supply line (L2) and the third three-phase power supply line (L3). The motor switch control circuit (42) controls the start or stop of the drive motor through the forward and reverse control circuit (41) and the first three-phase power line (L1), the second three-phase power line (L2) and the third three-phase power line (L3); The forward / reverse control circuit (41) includes: First relay (KJ1) and second relay (KJ2); The first three-phase power line (L1) is electrically connected to the first normally open contact (NO1) of the first relay (KJ1); The first three-phase power line (L1) is electrically connected to the second normally closed contact (NC2) of the second relay (KJ2); The second three-phase power line (L2) is electrically connected to the first normally closed contact (NC1) of the first relay (KJ1); The second three-phase power line (L2) is electrically connected to the second normally open contact (NO2) of the second relay (KJ2); The motor switch control circuit (42) includes: The third relay (KJ3), the fourth relay (KJ4), and the fifth relay (KJ5); First motor power supply line (U1), second motor power supply line (U2), and third motor power supply line (U3). The first three-phase power line (L1) is electrically connected to the third normally closed contact (NC3) of the third relay (KJ3); The first three-phase power line (L1) is electrically connected to the fourth normally closed contact (NC4) of the fourth relay (KJ4); The second three-phase power line (L2) is electrically connected to the third normally closed contact (NC3) of the third relay (KJ3); The second three-phase power line (L2) is electrically connected to the fourth normally closed contact (NC4) of the fourth relay (KJ4); The third three-phase power line (L3) is electrically connected to the fifth normally open contact (NO5) of the fifth relay (KJ5); The third three-phase power line (L3) is electrically connected to the fifth normally closed contact (NC5) of the fifth relay (KJ5); The first motor power supply line (U1) is electrically connected to the third normally open contact (NO3) of the third relay (KJ3); The second motor power supply line (U2) is electrically connected to the fourth normally open contact (NO4) of the fourth relay (KJ4); The third motor power supply line (U3) is electrically connected to the fifth normally open contact (NO5) of the fifth relay (KJ5); In this process, after the crusher (1) rotates along the first direction for a preset time, the controller (3) obtains the second working current of the crusher (1); the controller (3) judges the second working current, and when the second working current is still greater than the preset current threshold, it controls the crusher (1) to continue to reverse; when the second working current is less than or equal to the preset current threshold, it generates a second control command, which causes the reverse control device (4) to close and controls the crusher (1) to start running again, and the crusher (1) rotates along the first direction to start crushing again; Among them, the first working current is the working current when the crusher (1) is rotating forward to crush medical waste materials.

2. The crushing control system of the medical waste treatment equipment according to claim 1, characterized in that, The drive motor (12) is fixedly connected to the crusher assembly (11) via a bracket (14).

3. The crushing control system of the medical waste treatment equipment according to claim 1, characterized in that, The first relay (KJ1) and the second relay (KJ2) are connected in series with the first power supply (DC1) via wires; The third relay (KJ3), the fourth relay (KJ4), and the fifth relay (KJ5) are connected in series with the second power supply (DC2) via wires.

4. The crushing control system of the medical waste treatment equipment according to claim 1, characterized in that, Also includes: The display device (5) is electrically connected to the controller (3) and is used to receive and display the working status of the crusher (1) obtained by the controller (3).

5. The crushing control system of the medical waste treatment equipment according to claim 1, characterized in that, Also includes: An alarm device (6) electrically connected to the controller (3) is used to receive the working status of the crusher (1) obtained by the controller (3) and to issue an alarm.

6. A crushing control method for medical waste treatment equipment, characterized in that, Applied to the system as described in any one of claims 1 to 5, the method comprises: Obtain the first operating current of the crusher (1); Based on the first operating current, a first control command is generated; According to the first control command, after the crusher (1) is controlled to rotate in the first direction for a preset time by the reversing control device (4), a second control command is generated; According to the second control command, the crusher (1) is controlled to rotate in the second direction by the reversing control device (4); wherein the first direction is opposite to the second direction.

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