A linkage control system for a waste pyrolysis feeding mechanism

Abstract

The present invention belongs to the technical field of control methods for automatic feeding of domestic waste in the domestic waste pyrolysis process, and specifically relates to an interlocking control system for a waste pyrolysis feeding mechanism. A programmable logic controller is connected to a human-machine interface, and the programmable logic controller controls a cloth feeding motor, a conveyor belt, a belt scale, a flap valve A, a flap valve B, a reciprocating electric push rod, a vertical screw A, a conveying screw, a vertical screw B, and a pyrolysis reactor respectively. The crushed and dried waste is automatically and continuously conveyed from a waste cloth bin to the pyrolysis reactor, and the waste feeding amount can be continuously and evenly adjusted, and has good adjustability and safety.

Description

Technical Field

[0001] The invention belongs to the technical field of a control method for automatic feeding of domestic waste in a domestic waste pyrolysis process, and in particular relates to a linkage control system of a waste pyrolysis feeding mechanism. Background Art

[0002] The garbage pyrolysis process is an advanced garbage treatment process, which achieves garbage pyrolysis through high temperature and oxygen-free method. The garbage pyrolysis process must not only ensure the harmless treatment of garbage (no dioxin generation), save energy and reduce consumption, improve the efficiency of garbage thermal treatment, but also reduce the cost and intensity of human resources as much as possible and improve work efficiency. The automatic garbage feeding of the garbage pyrolysis process requires that the garbage feeding is continuous, uniform and adjustable and that the garbage sealing requirements are met to achieve an oxygen-free environment in the pyrolysis reactor.

[0003] The existing domestic waste treatment process is mainly waste incineration, which is divided into mechanical grate, circulating fluidized bed and rotary kiln. Mechanical grate waste feeding generally consists of a waste storage pit, a waste grab, a waste feeding hopper, a switch gate, a feeding chute and a pusher. Its main adjustment is to adjust the pushing speed of the pusher. For the waste pyrolysis process, the mechanical grate waste feeding method can neither achieve the sealing of the waste feeding nor ensure the continuity and uniformity of the waste feeding, so it cannot meet the feeding requirements of the waste pyrolysis process; the circulating fluidized bed waste feeding method is to transport the pre-treated waste to the incinerator through a shaftless double-screw feeding device. Although it realizes the continuous feeding of waste, the internal filling of the device is loose during the shaftless double-screw feeding, and the sealing and oxygen-free effect cannot be effectively achieved; the feeding device of the rotary kiln waste incineration currently has a feeding screw, a pushing scraper or a belt feeder. The feeding screw and the belt feeder cannot achieve effective sealing, and the feeding scraper cannot achieve continuous and uniform adjustment of the waste feeding.

[0004] In summary, the garbage pyrolysis process is a process of anaerobic pyrolysis of garbage. In order to ensure the continuous, stable and safe pyrolysis process of garbage entering the reactor, it is necessary to carry out technical innovation and improvement on the garbage feeding mechanism to achieve continuous, stable and safe automatic feeding of garbage. Summary of the invention

[0005] The purpose of the present invention is to provide a linkage control system for a garbage pyrolysis feeding mechanism, which can automatically and continuously transport the crushed and dried garbage (particle size range 50-100mm) from a garbage distribution bin to a pyrolysis reactor, and the garbage feeding amount can be continuously and evenly adjusted, and has good adjustability and safety.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A linkage control system for a waste pyrolysis feeding mechanism, where a programmable logic controller is connected to a human-machine interface. The programmable logic controller controls a cloth-feeding motor, a conveyor belt, a belt scale, a flap valve A, a flap valve B, a reciprocating electric push rod, a vertical screw A, a conveying screw, a vertical screw B, and a pyrolysis reactor respectively.

[0008] The described human-machine interface uses an upper computer and communicates with the programmable logic controller through a network protocol to achieve data exchange. The human-machine interface can not only display the parameters of the feeding system in real time but also control the equipment of the feeding system in real time.

[0009] The described programmable logic controller realizes the acquisition of data from frequency converters and electrical drives in the feeding system and can also control the operation of the feeding system through output signals. The pyrolysis reactor is driven by a frequency converter and realizes start-stop / speed control functions with the programmable logic controller and receives operation / fault / speed feedback / current signals from the frequency converter.

[0010] The cloth-feeding motor is driven by a frequency converter and realizes remote start-stop / speed control functions with the programmable logic controller and receives operation / fault / speed feedback / current signals from the frequency converter. The conveyor belt is driven by a frequency converter and realizes remote start-stop / speed control functions with the programmable logic controller and receives operation / fault / speed feedback / current signals from the frequency converter.

[0011] The belt scale is driven by a belt scale electrical cabinet and realizes remote start-stop control functions with the programming logic controller and receives operation / fault / real-time weighing signals from the electrical drive.

[0012] The flap valve A and the flap valve B are driven by direct electrical start and realize remote start-stop / steering switching control functions with the programmable logic controller and receive operation / fault / switch in place / current signals from the electrical drive.

[0013] The reciprocating electric push rod is driven by a frequency converter and realizes start-stop / steering switching / speed control functions with the programmable logic controller. The automatic reciprocating motion of the reciprocating electric push rod is achieved through programming, and it receives operation / fault / switch in place / speed feedback / current signals from the frequency converter.

[0014] The vertical screw A is driven by direct electrical start and realizes start-stop functions with the programmable logic controller and receives operation / fault / current signals from the direct electrical start drive. The conveying screw is driven by a frequency converter and realizes start-stop / speed control functions with the programmable logic controller and receives operation / fault / speed feedback / current signals from the frequency converter. The vertical screw B is driven by direct electrical start and realizes start-stop functions with the programmable logic controller and receives operation / fault / current signals from the direct start drive.

[0015] The control method in case of failure is as follows:

[0016] 1) The human-machine interface gives voice and information failure alarm prompts;

[0017] 2) At the same time, stop the automatic feeding program;

[0018] 3) At the same time, send a stop command through the programmable logic controller to stop the cloth feeding mechanism, conveyor belt, belt scale, reciprocating electric push rod, vertical screw A, conveying screw and vertical screw B;

[0019] 4) After closing the flap valve A, stop the flap valve A motor;

[0020] 5) After closing the flap valve B, stop the flap valve B motor.

[0021] The control method during normal operation is as follows:

[0022] 1) Start the vertical screw B, judge whether it works normally. After normal operation, continue to the next step. If it is not normal, check for faults and restart;

[0023] 2) Start the conveying screw, judge whether it works normally. After normal operation, continue to the next step. If it is not normal, check for faults and restart;

[0024] 3) Start the vertical screw A, judge whether it works normally. After normal operation, continue to the next step. If it is not normal, check for faults and restart;

[0025] 4) Start the reciprocating electric push rod to run reciprocally automatically, judge whether it works normally. After normal operation, continue to the next step. If it is not normal, check for faults and restart;

[0026] 5) Judge whether the vertical screw A, vertical screw B, conveying screw and the reciprocating movement of the reciprocating electric push rod all work normally. After normal operation, continue to the next step. If it is not normal, check for faults and restart;

[0027] 6) Start the automatic feeding program, close the flap valve B, and proceed to the next step after a 5s delay when the flap valve B is closed in place;

[0028] 7) Start the automatic feeding program, open the flap valve A, and proceed to the next step after a 5s delay when the flap valve A is opened in place;

[0029] 8) Start the automatic feeding program, and at the same time start the cloth feeding motor, conveyor belt and belt scale. After the three devices have run for 30s, stop the cloth feeding machine, conveyor belt and belt scale. After the three devices stop and a 5s delay, proceed to the next step;

[0030] 9) Start the automatic feeding program, close the flap valve A, and proceed to the next step after a 5s delay when the flap valve A is closed in place;

[0031] 10) Start the automatic feeding program, open the flap valve B, and proceed to the next step after a 5-second delay when the flap valve B is fully opened;

[0032] 11) Start the automatic feeding program, and after 90 seconds of feeding start timing, return to step 6) to loop and execute the automatic feeding program;

[0033] 12) The reciprocating electric push rod pushes and compresses the garbage to the end of the push rod, and a low-pressure nitrogen gas is set to continuously enter the end of the reciprocating electric push rod. The extrusion of the garbage and the blowing of the low-pressure nitrogen gas achieve the isolation and sealing during the garbage transportation process.

[0034] The beneficial effects achieved by the present invention are as follows:

[0035] The purpose of the present invention is to automatically and continuously transport the shredded and dried garbage (particle size range 50 - 100 mm) from the garbage distribution bin to the pyrolysis reactor, mainly including a programmable logic controller, a human-machine interface, a cloth motor frequency converter, a conveyor belt frequency converter, a belt scale, flap valves A / B, a reciprocating electric push rod frequency converter, vertical screws A / B, a conveying screw frequency converter, and a pyrolysis reactor frequency converter. The garbage starts from the cloth motor and is transported to the pyrolysis reactor according to logical control.

[0036] By program control, adjust the frequency and time of the cloth motor frequency converter of the feeding mechanism, the frequency and conveying time of the conveyor belt frequency converter, the opening and closing actions and time of flap valves A / B, the frequency of the reciprocating electric push rod frequency converter, and the frequency of the conveying screw frequency converter to match each other, so as to achieve the feeding dynamic balance of continuous garbage feeding and the stepless speed regulation of the conveying volume; the reciprocating electric push rod pushes and compresses the garbage to the end of the push rod, and a low-pressure nitrogen gas is set to continuously enter the end of the reciprocating electric push rod. The extrusion of the garbage and the blowing of the low-pressure nitrogen gas achieve the isolation and sealing during the garbage transportation process. Through the above automatic control of feeding, it not only realizes the automatic, continuous and uniform adjustment of the garbage feeding volume, with good adjustability, but also realizes the sealing of garbage feeding, effectively isolating and sealing the garbage feeding mechanism from the external environment, and having good safety. Description of the Drawings

[0037] Figure 1 It is the structure diagram of the garbage feeding system;

[0038] Figure 2 It is the structure diagram of the system of the present invention;

[0039] Figure 3 It is the flow chart of the control method. Detailed Embodiments

[0040] The present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0041] The shredded and dried garbage is stored in the ground cloth bin, conveyed to the belt scale through the conveyor belt for real-time weighing, and then conveyed into the vertical feeding cylinder. It enters the reciprocating electric push rod through the double plug valve and is conveyed to the vertical screw A, and then conveyed to the reactor through the conveying screw and the vertical screw B.

[0042] Among them, the cloth machine motor, conveyor belt motor, electric push rod motor, vertical screw A motor, conveying screw motor, and vertical screw B motor are frequency conversion motors, and their speeds can be adjusted in real time.

[0043] The programmable logic controller has a pre-written control logic and safety protection program. It controls the electrical direct start drive / variable frequency drive of on-site equipment through signal input and output, so as to realize the interlocking control of the garbage feeding system.

[0044] As Figure 1 shown, the garbage feeding system configuration includes: cloth mechanism 1, conveyor belt 2, belt weighing mechanism 3, feeding cylinder 4, plug valve A 5, plug valve B 6, electric push rod 7, vertical screw A 8, conveying screw 9, vertical screw B 10, reactor 11.

[0045] Figure 2 In the middle is the control system structure diagram. The signal forms in the diagram are as follows:

[0046] Start / stop: Passive dry contact signal

[0047] Rotation direction switching: Passive dry contact signal

[0048] Speed control: 4 - 20mA analog signal

[0049] Operation / fault / switch in place: Passive dry contact signal

[0050] Speed feedback / real-time weighing / current: 4 - 20mA analog signal

[0051] The programmable logic controller is connected to the human-machine interface. The programmable logic controller controls the cloth motor, conveyor belt, belt scale, plug valve A, plug valve B, reciprocating electric push rod, vertical screw A, conveying screw, vertical screw B, and pyrolysis reactor respectively.

[0052] The control system structure mainly includes the following:

[0053] 1) Human-machine interface, using a host computer, communicates with the programmable logic controller through a network protocol to achieve data exchange. The human-machine interface can not only display the parameters of the feeding system in real time, but also control the equipment of the feeding system in real time;

[0054] 2) Programmable logic controller, which realizes the acquisition of data of the frequency converters and electrical drives in the feeding system, and can also control the operation of the feeding system through output signals.

[0055] 3) The fabric motor is driven by a frequency converter, and realizes the remote start / stop / speed control function with a programmable logic controller, and receives the operation / fault / speed feedback / current signal of the frequency converter;

[0056] 4) The conveyor belt is driven by a frequency converter, and realizes the remote start / stop / speed control function with a programmable logic controller, and receives the operation / fault / speed feedback / current signal of the frequency converter;

[0057] 5) The belt scale is driven by the belt scale electrical cabinet, and realizes the remote start / stop control function with a programmable logic controller, and receives the operation / fault / real-time weighing signal of the electrical drive;

[0058] 6) The slide valve A / slide valve B is driven by direct electrical start, and realizes the remote start / stop / steering switching control function with a programmable logic controller, and receives the operation / fault / switch in place / current signal of the electrical drive;

[0059] 7) The reciprocating electric push rod is driven by a frequency converter, and realizes the start / stop / steering switching / speed control function with a programmable logic controller, and realizes the automatic reciprocating motion of the reciprocating electric push rod through programming, and receives the operation / fault / switch in place / speed feedback / current signal of the frequency converter;

[0060] 8) The vertical screw A is driven by direct electrical start, and realizes the start / stop function with a programmable logic controller, and receives the operation / fault / current signal from the direct electrical start drive;

[0061] 9) The conveying screw is driven by a frequency converter, and realizes the start / stop / speed control function with a programmable logic controller, and receives the operation / fault / speed feedback / current signal from the frequency converter;

[0062] 10) The vertical screw B is driven by direct electrical start, and realizes the start / stop function with a programmable logic controller, and receives the operation / fault / current signal from the direct start drive;

[0063] 11) The pyrolysis reactor is driven by a frequency converter, and realizes the start / stop / speed control function with a programmable logic controller, and receives the operation / fault / speed feedback / current signal from the frequency converter;

[0064] 12) The reciprocating electric push rod pushes and squeezes the garbage to the end of the push rod, and a low-pressure nitrogen is set to continuously enter the end of the reciprocating electric push rod. The extrusion of the garbage and the blowing of the low-pressure nitrogen realize the isolation and sealing of the garbage conveying process.

[0065] The normal working logic flow of the linkage control system (such as Figure 3As shown in the figure, an automatic control process is realized through a programmable logic controller, an electric drive / frequency converter, field devices, and sensors. The control method is as follows:

[0066] Start the vertical screw B, determine whether it is working properly. After normal operation, continue to the next step. If it is not normal, check for faults and restart;

[0067] Start the conveying screw, determine whether it is working properly. After normal operation, continue to the next step. If it is not normal, check for faults and restart;

[0068] Start the vertical screw A, determine whether it is working properly. After normal operation, continue to the next step. If it is not normal, check for faults and restart;

[0069] Start the electric push rod to run reciprocally automatically, determine whether it is working properly. After normal operation, continue to the next step. If it is not normal, check for faults and restart;

[0070] Determine whether the vertical screws A / B, the conveying screw, and the reciprocating movement of the electric push rod are all working properly. After normal operation, continue to the next step. If it is not normal, check for faults and restart;

[0071] Automatic feeding start flag, start the automatic feeding program - close the flap valve B. After the flap valve B is closed in place and delayed for 5 s, proceed to the next step;

[0072] Start the automatic feeding program - open the flap valve A. After the flap valve A is opened in place and delayed for 5 s, proceed to the next step;

[0073] Start the automatic feeding program - start the cloth feeding motor, the conveyor belt, and the belt scale simultaneously. After the three devices have run for T1 seconds (30 s), stop the cloth feeding machine, the conveyor belt, and the belt scale. After the three devices stop and are delayed for 5 s, proceed to the next step;

[0074] Start the automatic feeding program - close the flap valve A. After the flap valve A is closed in place and delayed for 5 s, proceed to the next step;

[0075] Start the automatic feeding program - open the flap valve B. After the flap valve B is opened in place and delayed for 5 s, proceed to the next step;

[0076] Start the automatic feeding program - after the feeding starts to count down for T2 seconds (90 s - 150 s corresponding to different garbage feeding amounts), return to the automatic feeding start flag and feed automatically in a cycle.

[0077] Linkage control failsafe executes automatic actions. The control method is as follows:

[0078] When the following faults occur during normal execution, safety actions are performed. The fault information includes: fabric mechanism faults (stop, fault, overcurrent), conveyor belt faults (stop, fault, overcurrent), belt weighing mechanism faults (stop, fault), flap valve A faults (open failure, close failure, stop, fault, overcurrent), flap valve B faults (open failure, close failure, stop, fault, overcurrent), electric push rod faults (open failure, close failure, stop, fault, overcurrent), vertical screw A / B faults (stop, fault, overcurrent), conveying screw faults (stop, fault, overcurrent), reactor faults (stop, fault, overcurrent), and external stop faults (system stop, external interlock stop, etc.).

[0079] The actions automatically performed when a fault occurs are as follows:

[0080] The upper computer HMI gives voice and information fault alarm prompts;

[0081] At the same time, stop the automatic feeding program;

[0082] At the same time, send a stop command through the programmable logic controller. The stop output relay is disconnected, and the passive dry contact signal changes from closed to open, stopping the fabric mechanism, conveyor belt, belt weighing mechanism, electric push rod, vertical screw A, conveying screw, and vertical screw B;

[0083] At the same time, close flap valve A and then stop the flap valve A motor;

[0084] At the same time, close flap valve B and then stop the flap valve B motor.

[0085] A linkage control system for a waste pyrolysis feeding mechanism, where the programmable logic controller is connected to the human-machine interface. The programmable logic controller controls the fabric motor, conveyor belt, belt scale, flap valve A, flap valve B, reciprocating electric push rod, vertical screw A, conveying screw, vertical screw B, and pyrolysis reactor respectively.

[0086] The described human-machine interface uses an upper computer and communicates with the programmable logic controller through a network protocol to achieve data exchange. The human-machine interface can not only display the parameters of the feeding system in real time but also control the equipment of the feeding system in real time.

[0087] The described programmable logic controller realizes the acquisition of data of the frequency converters and electrical drives in the feeding system and can also control the operation of the feeding system through output signals; the pyrolysis reactor is driven by a frequency converter and realizes start / stop / speed control functions with the programmable logic controller and receives operation / fault / speed feedback / current signals from the frequency converter.

[0088] The described fabric motor is driven by a frequency converter, realizes remote start / stop / speed control functions with a programmable logic controller, and receives the operation / fault / speed feedback / current signals of the frequency converter; the conveyor belt is driven by a frequency converter, realizes remote start / stop / speed control functions with a programmable logic controller, and receives the operation / fault / speed feedback / current signals of the frequency converter.

[0089] The described belt scale is driven by an electrical cabinet of the belt scale, realizes remote start / stop control functions with a programmable logic controller, and receives the operation / fault / real-time weighing signals of the electrical drive.

[0090] The described plug valve A and plug valve B are driven by direct electrical start, realize remote start / stop / steering switching control functions with a programmable logic controller, and receive the operation / fault / switch in place / current signals of the electrical drive.

[0091] The described reciprocating electric push rod is driven by a frequency converter, realizes start / stop / steering switching / speed control functions with a programmable logic controller, realizes the automatic reciprocating motion of the reciprocating electric push rod through programming, and receives the operation / fault / switch in place / speed feedback / current signals of the frequency converter.

[0092] The described vertical screw A is driven by direct electrical start, realizes start / stop functions with a programmable logic controller, and receives the operation / fault / current signals from the direct electrical start; the conveyor screw is driven by a frequency converter, realizes start / stop / speed control functions with a programmable logic controller, and receives the operation / fault / speed feedback / current signals from the frequency converter; the vertical screw B is driven by direct electrical start, realizes start / stop functions with a programmable logic controller, and receives the operation / fault / current signals from the direct start drive.

[0093] The control method in case of a fault is as follows:

[0094] The human-machine interface gives voice and information fault alarm prompts;

[0095] At the same time, stop the automatic feeding program;

[0096] At the same time, send a stop command through the programmable logic controller to stop the fabric mechanism, conveyor belt, belt scale, reciprocating electric push rod, vertical screw A, conveyor screw and vertical screw B;

[0097] At the same time, close the plug valve A and then stop the plug valve A motor;

[0098] At the same time, close the plug valve B and then stop the plug valve B motor.

[0099] The control method during normal operation is as follows:

[0100] Start the vertical screw B and check if it is working properly. If it is working properly, proceed to the next step. If not, check for faults and restart it.

[0101] Start the conveyor screw and check if it is working properly. If it is working properly, proceed to the next step. If not, check for faults and restart it.

[0102] Start the vertical screw A and check if it is working properly. If it is working properly, proceed to the next step. If not, check for faults and restart it.

[0103] Start the reciprocating electric push rod to run reciprocally automatically and check if it is working properly. If it is working properly, proceed to the next step. If not, check for faults and restart it.

[0104] Check if the vertical screw A, vertical screw B, conveyor screw, and the reciprocating motion of the reciprocating electric push rod are all working properly. If they are working properly, proceed to the next step. If not, check for faults and restart them.

[0105] Automatic feeding start flag, start the automatic feeding program, close the flap valve B, and proceed to the next step after a 5-second delay when the flap valve B is closed in place.

[0106] Start the automatic feeding program, open the flap valve A, and proceed to the next step after a 5-second delay when the flap valve A is opened in place.

[0107] Start the automatic feeding program, and at the same time start the cloth-feeding motor, conveyor belt, and belt scale. After all three devices have run for 30 seconds, stop the cloth-feeding machine, conveyor belt, and belt scale. After the three devices stop and a 5-second delay, proceed to the next step.

[0108] Start the automatic feeding program, close the flap valve A, and proceed to the next step after a 5-second delay when the flap valve A is closed in place.

[0109] Start the automatic feeding program, open the flap valve B, and proceed to the next step after a 5-second delay when the flap valve B is opened in place.

[0110] Start the automatic feeding program. After 90 seconds of feeding time, return to the automatic feeding start flag for automatic cyclic feeding.

Claims

1. A linkage control system for a waste pyrolysis feeding mechanism, characterized in that: The programmable logic controller is connected to the human-machine interface, and the programmable logic controller controls the cloth feeding motor, conveyor belt, belt scale, plug valve A, plug valve B, reciprocating electric push rod, vertical screw A, conveyor screw, vertical screw B, and pyrolysis reactor respectively; The normal working control method is as follows: 1) Start the vertical screw B, judge whether it works normally, and continue to the next step after normal operation. If it is not normal, check the fault and restart; 2) Start the conveyor screw, judge whether it works normally, and continue to the next step after normal operation. If it is not normal, check the fault and restart; 3) Start the vertical screw A, judge whether it works normally, and continue to the next step after normal operation. If it is not normal, check the fault and restart; 4) Start the reciprocating electric push rod to run automatically reciprocally, judge whether it works normally, and continue to the next step after normal operation. If it is not normal, check the fault and restart; 5) Judge whether the vertical screw A, vertical screw B, conveyor screw, and reciprocating movement of the reciprocating electric push rod all work normally, and continue to the next step after normal operation. If it is not normal, check the fault and restart; 6) Start the automatic feeding program, close the plug valve B, and perform the next step after a 5s delay when the plug valve B is closed in place; 7) Start the automatic feeding program, open the plug valve A, and perform the next step after a 5s delay when the plug valve A is opened in place; 8) Start the automatic feeding program, and at the same time start the cloth feeding motor, conveyor belt, and belt scale. After the three devices run for 30s, stop the cloth feeding machine, conveyor belt, and belt scale. After the three devices stop and a 5s delay, perform the next step; 9) Start the automatic feeding program, close the plug valve A, and perform the next step after a 5s delay when the plug valve A is closed in place; 10) Start the automatic feeding program, open the plug valve B, and perform the next step after a 5s delay when the plug valve B is opened in place; 11) Start the automatic feeding program, and after 90s of feeding start timing, return to step 6) to loop and execute the automatic feeding program; 12) The reciprocating electric push rod pushes and squeezes the waste to the end of the push rod, and a low-pressure nitrogen gas is continuously introduced into the end of the reciprocating electric push rod. The extrusion of the waste and the blowing of the low-pressure nitrogen gas realize the isolation and sealing of the waste conveying process.

2. The linkage control system for a waste pyrolysis feeding mechanism according to claim 1, characterized in that: The human-machine interface uses a host computer, communicates with the programmable logic controller through a network protocol to achieve data exchange. The human-machine interface can not only display the parameters of the feeding system in real time, but also control the equipment of the feeding system in real time.

3. The linkage control system for a waste pyrolysis feeding mechanism according to claim 1, characterized in that: The programmable logic controller realizes the acquisition of data of the frequency converter and electrical drive in the feeding system, and can also control the operation of the feeding system through output signals; the pyrolysis reactor is driven by a frequency converter, and realizes the start / stop / speed control function with the programmable logic controller, and receives the operation / fault / speed feedback / current signal from the frequency converter.

4. The linkage control system for a waste pyrolysis feeding mechanism according to claim 1, characterized in that: The cloth motor is driven by a frequency converter, realizes remote start / stop / speed control functions with a programmable logic controller, and receives the operation / fault / speed feedback / current signals of the frequency converter; The conveyor belt is driven by a frequency converter, realizes remote start / stop / speed control functions with a programmable logic controller, and receives the operation / fault / speed feedback / current signals of the frequency converter.

5. The interlocking control system of the waste pyrolysis feeding mechanism according to claim 1, characterized in that: The belt scale is driven by an electrical cabinet of the belt scale, realizes remote start / stop control functions with a programmable logic controller, and receives the operation / fault / real-time weighing signals of the electrical drive.

6. The interlocking control system of the waste pyrolysis feeding mechanism according to claim 1, characterized in that: The plug valve A and the plug valve B are driven by direct electrical start, realize remote start / stop / steering switching control functions with a programmable logic controller, and receive the operation / fault / switch in place / current signals of the electrical drive.

7. The interlocking control system of the waste pyrolysis feeding mechanism according to claim 1, characterized in that: The reciprocating electric push rod is driven by a frequency converter, realizes start / stop / steering switching / speed control functions with a programmable logic controller, realizes the automatic reciprocating movement of the reciprocating electric push rod through programming, and receives the operation / fault / switch in place / speed feedback / current signals of the frequency converter.

8. The interlocking control system of the waste pyrolysis feeding mechanism according to claim 1, characterized in that: The vertical screw A is driven by direct electrical start, realizes start / stop functions with a programmable logic controller, and receives the operation / fault / current signals from the direct electrical start drive; The conveying screw is driven by a frequency converter, realizes start / stop / speed control functions with a programmable logic controller, and receives the operation / fault / speed feedback / current signals from the frequency converter; The vertical screw B is driven by direct electrical start, realizes start / stop functions with a programmable logic controller, and receives the operation / fault / current signals from the direct start drive.

9. The interlocking control system of the waste pyrolysis feeding mechanism according to claim 1, characterized in that: The control method in case of failure is as follows: 1) The human-machine interface gives sound and information fault alarm prompts; 2) At the same time, stop the automatic feeding program; 3) At the same time, send a stop command through the programmable logic controller to stop the cloth mechanism, conveyor belt, belt scale, reciprocating electric push rod, vertical screw A, conveying screw and vertical screw B; 4) Close the plug valve A and then stop the plug valve A motor; 5) Close the plug valve B and then stop the plug valve B motor.

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