Kitchen waste pulping and sorting system and operation method thereof

Abstract

The invention discloses a kitchen waste pulping and sorting system and an operating method thereof, which comprises a pulping machine, wherein the pulping machine comprises: a tank body; a rotor, which is used to crush materials to be processed, the rotor is arranged in the tank body, and a motor drives the rotor to rotate; a feed inlet, which is arranged on the upper surface of the tank body; a discharge port, which is used to realize synchronous pulping and material discharge, and the discharge port is arranged on the side of the tank body; a valve, which is arranged at a position on the side of the tank body corresponding to the discharge port; a control mechanism, which is used to control the opening of the valve, and the control mechanism is connected to the valve. The invention provides a kitchen waste pulping and sorting system and an operating method thereof, which has good continuity, good adaptability to different materials, and is easy to separate impurities and organic pulp.

Description

Technical Field

[0001] The present invention relates to the technical field of pulping machines, and in particular to a kitchen waste pulping and sorting system and an operating method thereof. Background Art

[0002] Kitchen waste mainly refers to the food waste, vegetable market and fruit market waste in the residents' domestic waste after classification and collection. Because it contains more raw materials, its treatment in the pretreatment stage of conventional utilization methods is somewhat different from that of catering waste, and it needs mechanical crushing to improve the recovery rate of its organic matter.

[0003] According to the prior art, the current mainstream operation mode of the pulping machine for kitchen waste is to start the pulping machine and subsequent equipment from back to front in sequence, and then start feeding. When the kitchen waste is fed to a certain amount, the feeding is stopped, and the discharge valve is opened after a certain period of pulping. All the materials in this batch are discharged under the push of the rotating parts of the pulping machine, and then the discharge valve is closed, and the feeding is started again to enter the next batch of pulping. The above-mentioned kitchen waste pulping and sorting system has the following disadvantages: First, the operation mode of the kitchen waste pulping machine is sequential batch processing, which has the problems of poor continuity, large temporary storage volume requirements for subsequent equipment, and frequent equipment start and stop; second, the lack of process adjustment control causes the pulping machine to have poor adaptability to different materials, and it is easy to cause the equipment to be forced to shut down due to changes in impurity content or the invasion and entanglement of large impurities; third, the indiscriminate crushing and pulping of organic matter and impurities is easy to cause the granulation of hard debris, which is completely mixed with the organic pulp and difficult to separate, resulting in problems such as increased wear of subsequent equipment and sand accumulation. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned prior art and provide a kitchen waste pulping and sorting system and an operating method thereof which has good continuity, good adaptability to different materials and easy separation of impurities and organic slurry.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: a kitchen waste pulping and sorting system, which includes a pulping machine, and the pulping machine includes:

[0006] Tank;

[0007] The rotor is used to crush the material to be processed. The rotor is arranged in the tank body and the motor drives the rotor to rotate;

[0008] A feed inlet, the feed inlet being arranged on the upper surface of the tank body;

[0009] A discharge port is used to realize synchronous slurry discharge and the discharge port is arranged on the side of the tank body;

[0010] A valve, wherein the valve is arranged on the side of the tank body at a position corresponding to the discharge port;

[0011] The control mechanism is used to control the opening of the valve, and the control mechanism is connected to the valve.

[0012] After adopting the above structure, the present invention has the following advantages compared with the prior art: a feed port is provided on the upper surface of the tank body, and a discharge port is provided on the side of the tank body, which is used for discharging pulp and material at the same time, realizing the synchronization of pulping and material discharging, and can make the feeding and discharging synchronized and balanced at the same time, so as to ensure the continuity of the pulping process, avoid the problems of material accumulation in the pulping machine, explosion shutdown, winding shutdown, large or hard object protection shutdown, etc., and the continuity is good; in addition, a valve is provided at the discharge port, and the control mechanism is connected to the valve, and the control mechanism is used to control the valve opening, and the valve opening is adjusted to realize the continuous and stable operation of the equipment under different material conditions. It avoids the problem of the pulping machine being shut down for protection due to the increase of current due to encountering hard objects and large objects, and also avoids the continuous change of the conveying efficiency of the front-end conveying equipment due to the difference in the properties of kitchen waste in different time periods and batches, and the excessive feed amount per unit time causes the pulping machine to burst or overload protection shutdown. It has good adaptability to different materials, making it easy to separate impurities and organic pulp, so that the amount of sand accumulated in the equipment is small and the equipment wear is small.

[0013] Preferably, the rotor is a chain hammer type cutter disc, which has a good crushing effect.

[0014] Preferably, the control mechanism is a hydraulic cylinder, the hydraulic rod of the hydraulic cylinder is connected to the valve, and the structure is simple.

[0015] Preferably, it also includes:

[0016] A transmission shaft, the upper end of which is connected to the rotor;

[0017] A first pulley, wherein the first pulley is arranged on the output shaft of the motor;

[0018] A second pulley, wherein the second pulley is arranged at the lower end of the transmission shaft;

[0019] The belt is arranged on the first pulley and the second pulley respectively. The first pulley, the second pulley and the belt form a pulley structure, which is convenient for the motor to drive the transmission shaft to rotate, thereby realizing the rotation of the rotor.

[0020] Preferably, it also includes a loader, an elevator, a pulping and sorting machine, an extrusion dewatering machine, a sand remover and a debris conveyor. The loader, pulping machine, elevator and pulping and sorting machine are connected in sequence. The debris conveyor is connected to the slag discharge port of the pulping and sorting machine and the feed port of the extrusion dewatering machine. The pulp discharge port of the pulping and sorting machine and the pulp discharge port of the extrusion dewatering machine are respectively connected to the sand remover, so that the pulp and impurities are easily separated.

[0021] Preferably, it also includes:

[0022] A controller, a power module and a current sensor for detecting the motor current, wherein the controller is electrically connected to the feeder, the motor, the control mechanism, the elevator, the pulping and sorting machine, the extrusion dehydrator, the sand remover and the debris conveyor through the power module;

[0023] The current sensor transmits the collected signal to the controller, and the controller transmits the feedback signal to the control mechanism. The control mechanism controls the opening of the valve and performs automatic control. The current sensor is used to detect the motor current of the beater, adjust the motor current and thus adjust the operating frequency of the beater. The beater current is linked to the slag discharge valve opening, and the valve opening is adjusted in real time by using the current change to achieve continuous and stable operation of the equipment under different material conditions. This avoids the problem of the beater shutting down due to current rise protection caused by hard objects or large objects, and also avoids the continuous change in the conveying efficiency of the front-end conveying equipment due to the difference in the properties of kitchen waste in different time periods and batches, and the excessive feed volume per unit time causing the beater to shut down due to pulping or overload protection.

[0024] A method for pulping kitchen waste includes the pulping system described above, and comprises the following steps:

[0025] 1. Parameter setting: Before starting the beater, set the beater starting frequency P0 to 30-40Hz, the beater protection current A0 to 110-130A (start protection duration T1 to 30-90s), the beater valve opening start adjustment current A1 to 80-100A, the beater initial valve opening K0 to 25%-35%, the beater valve opening adjustment range K1 to 8%-12%, the beater valve opening adjustment time interval T0 to 30-90s, and the initial valve opening current duration T2 to 90-150s;

[0026] 2. Start in reverse order: After the beater parameters are set and confirmed, the pre-treatment equipment will start in reverse order;

[0027] 3. Loading: After the beater and its subsequent equipment are started, the loading device is started to transport the material to be processed into the beater. The beater continuously provides the material to be processed. This step is continuous feeding;

[0028] 4. Beating: The material to be processed enters the beating process when it enters the beater. The feed and discharge of the beater are synchronized and the inlet and outlet are balanced. The beater current is monitored online in real time. When the beater current exceeds the set start-up adjustment current A1 and lasts longer than the valve opening adjustment interval T0, the beater valve opening is increased by K1. If the beater current is still higher than the set start-up adjustment current A1 and lasts longer than the valve opening adjustment interval T0, the beater valve opening is increased by K1 again. This is carried out until the beater current recovers to below A1. When the beater current recovers to below A1 and lasts longer than T2, the beater valve opening is adjusted back to the initial set opening. During this process, if the beater current exceeds the beater protection current A0 and lasts longer than T1, or if the beater valve is increased five times in a row and the beater current fails to recover to below A1, the beater will be shut down for protection.

[0029] 5. Discharging pulp: The pulping machine discharges pulp and material simultaneously with the pulping process, and the material enters the subsequent conveying equipment. This step is a continuous operation.

[0030] The beater reflects the pulping situation of the material in the beater according to the change of the operating current. When the beater encounters large objects, hard objects and other impurities that may cause current overload and lasts for a certain period of time, the control program starts the adjustment of the slag discharge valve opening, increases the valve opening to discharge the debris from the beater, and avoids the beater stopping due to overload and affecting the processing efficiency; when the beater opening adjustment increases and the interference removal current returns to the set safety current, the beater control program starts the slag discharge valve opening callback for a certain period of time, and reduces the valve opening to the initial value to ensure the crushing time of organic matter, improve the pulping effect of organic matter, avoid insufficient crushing of debris, and a large amount of entangled debris enters the subsequent conveying and sorting equipment, causing equipment overload and jamming. The continuous material loading and unloading process of the pulper is realized. The pulping time of the material can be controlled by the pulping frequency and the initial valve opening. These two key parameters have been set before the start of pulping, affecting the fineness of the material pulping and the processing capacity per unit time. The pulping program controls the continuity of the pulping process to avoid problems such as material accumulation in the pulper, explosion shutdown, entanglement shutdown, and protection shutdown due to large or hard objects.

[0031] Preferably, the reverse order in the step 2 is sand remover, extrusion dewatering machine, debris conveyor, pulping and sorting machine, elevator, beater, and loader. Starting the machines in reverse order can effectively prevent "warehouse explosion" caused by the front-end equipment being started but the back-end equipment not being started.

[0032] Preferably, the shutdown in step three is to shut down the pretreatment equipment in sequence, which is the loader, beater, elevator, pulping and sorting machine, debris conveyor, extrusion dewatering machine, and sand remover. The sequential shutdown ensures that all materials are processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a front sectional view of a pulping machine of a kitchen waste pulping and sorting system of the present invention.

[0034] Figure 2 It is a schematic diagram of a kitchen waste pulping and sorting system of the present invention.

[0035] Figure 3 The invention discloses a circuit schematic diagram of a kitchen waste pulping and sorting system.

[0036] Figure 4 It is a schematic diagram of parameter adjustment of a pulper in a kitchen waste pulping and sorting system of the present invention.

[0037] Figure 5 It is a schematic diagram of the valve adjustment logic of a pulper of a kitchen waste pulping and sorting system of the present invention.

[0038] Figure 6 The invention discloses a wiring schematic diagram of a kitchen waste pulping and sorting system.

[0039] Figure 7 yes Figure 6 A is an enlarged schematic diagram.

[0040] Figure 8 yes Figure 7 A magnified schematic diagram of B.

[0041] Fig. 9 yes Figure 8 A magnified schematic diagram of C in the middle.

[0042] Fig.10 It is an interface diagram of a controller of a kitchen waste pulping and sorting system of the present invention.

[0043] Fig.11 The invention discloses a circuit diagram of a kitchen waste pulping and sorting system controller and a feeder, a pulping machine, a hoist and a pulping and sorting machine.

[0044] Fig.12 The invention discloses a circuit diagram of a kitchen waste pulping and sorting system controller, a sundry conveyor and an extrusion dehydrator.

[0045] Fig.13 The invention discloses a circuit diagram of a controller and a sand remover for a kitchen waste pulping and sorting system.

[0046] Among them, 1. beater, 110. tank body, 120. rotor, 121. transmission shaft, 122. first pulley, 123. second pulley, 124. belt, 130. motor, 140. feed port, 150. discharge port, 160. valve, 170. control mechanism, 2. loader, 3. elevator, 4. pulping and sorting machine, 5. extrusion dewatering machine, 6. sand remover, 7. debris conveyor, 8. controller, 9. power module, 10. current sensor. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0048] like Figure 1 As shown, the present invention provides a kitchen waste pulping and sorting system, which includes a pulping machine 1, which includes a tank body 110, a rotor 120, a motor 130, a feed port 140, a discharge port 150, a valve 160 and a control mechanism 170. The rotor 120 is rotatably fitted in the lower end of the tank body 110, the motor 130 is arranged outside the tank body 110 to drive the rotor 120 to rotate, the feed port 140 is arranged on the upper surface of the tank body 110, the discharge port 150 is arranged on the outer side surface of the lower end of the tank body 110 for discharging pulp and material at the same time, the valve 160 is arranged on the outer side surface of the tank body 110 corresponding to the discharge port 150, the control mechanism 170 is arranged on the outer side surface of the tank body 110 for controlling the opening of the valve 160, and the control mechanism 170 is located above the valve 160. Specifically, the control mechanism 170 is a hydraulic cylinder, which is hydraulically controlled. The hydraulic rod of the hydraulic cylinder is connected to the valve 160. The hydraulic cylinder is used to control the opening of the valve 160. The discharge port 150 realizes the synchronization of pulping and material discharge, ensuring the continuity of the pulping process, avoiding the problems of material accumulation, explosion shutdown, entanglement shutdown, large or hard object protection shutdown, etc. in the pulping machine 1, and the continuity is good; the control mechanism 170 is used to control the opening of the valve 160, and the opening of the valve 160 is adjusted to achieve continuous and stable operation of the equipment under different material conditions. It avoids the problem of the pulping machine shutting down due to current rise protection due to hard and large objects, and also avoids the continuous change of the conveying efficiency of the front-end conveying equipment due to the difference in the properties of kitchen waste in different time periods and batches, and the excessive feed volume per unit time causing the pulping machine to burst or shut down for overload protection. It has good adaptability to different materials, making it easy to separate impurities and organic pulp.

[0049] As an embodiment, the rotor 120 of the beater 1 is a chain hammer type cutter disc, specifically, a double chain hammer is provided on the cutter disc.

[0050] As an example, Figure 1In order to facilitate the motor 130 to drive the rotor 120 to rotate, it also includes a transmission shaft 121, a first pulley 122, a second pulley 123 and a belt 124. The upper end of the transmission shaft 121 extends into the tank 110 and is connected to the rotor 120. The first pulley 122 is arranged on the output shaft of the motor 130, and the second pulley 123 is arranged on the transmission shaft 121. The two ends of the belt 124 are respectively arranged on the first pulley 122 and the second pulley 123. The pulley structure is used to drive the rotor 120 to rotate. The structure is simple and the reliability is high. The rotor 120 drives the rotation speed of about 600r / min. The volume of the beater 1 is about 4m 3 .

[0051] As an example, Figure 2 It also includes a feeder 2, an elevator 3, a pulping and sorting machine 4, an extrusion dewatering machine 5, a sand remover 6 and a debris conveyor 7. The feeder 2, the pulping machine 1, the elevator 3 and the pulping and sorting machine 4 are connected in sequence. The debris conveyor 7 is connected to the slag discharge port of the pulping and sorting machine 4 and the feed port of the extrusion dewatering machine 5. The pulp discharge port of the pulping and sorting machine 4 and the pulp discharge port of the extrusion dewatering machine 5 are respectively connected to the sand remover 6, so that the pulp and impurities are easily separated, the sand accumulation of the equipment is greatly reduced, and the degree of wear on the equipment is reduced. The feeder 2 transports the material to be processed to the pulper 1 for crushing and pulping. During the pulping process, the pulp and material are discharged at the same time. Then, the elevator 3 is used to transport the pulp and material to the pulping sorting machine 4 for sorting. The sorted pulp is transported to the desander for desanding to obtain qualified pulp. The sorted debris is transported to the extrusion dehydrator 5 for extrusion dehydration by the debris conveyor 7. After the slurry is obtained, it is also passed through the desander 6 to obtain qualified slurry. The sand after desanding and the debris after extrusion dehydration can be collected. Specifically, the feeding method can be a single screw conveyor, a double screw conveyor, a multi-screw conveyor, a belt conveyor, a vehicle direct unloading, a chute, a push plate and other methods. Specifically, the feeder 2, the elevator 3 and the transportation between the equipment all adopt a double screw conveyor.

[0052] As an example, Figure 3 , 6, 7, 8, 9, 10, 11, 12 and 13, in order to facilitate the automatic control of the equipment and the opening of the valve 160, it also includes a controller 8, a power module 9 and a current sensor 10 for detecting the current of the motor 130. The controller 8 is electrically connected to the feeder 2, the motor 130, the control mechanism 170, the elevator 3, the pulping and sorting machine 4, the squeezing and dehydrating machine 5, the sand remover 6 and the debris conveyor 7 through the power module 9. The current sensor 10 transmits the collected signal to the controller 8, and the controller 8 transmits the feedback signal to the control mechanism 170, and the control mechanism 170 controls the opening of the valve 160. The controller 8 is a PLC, model S7-200, and the current sensor 10 is an ammeter, which is used to monitor the current of the motor 130, and control the opening of the valve 160 by the change of the current of the motor 130, and the current of the beater 1 is linked with the opening of the valve 160. By using the change of the current, the opening of the valve 160 is adjusted in real time to achieve continuous and stable operation of the equipment under different material conditions. The problem of the beater 1 shutting down for protection due to rising current caused by encountering hard or large objects is avoided. The continuous change in the conveying efficiency of the front-end conveying equipment caused by the difference in the properties of kitchen waste in different time periods and batches is also avoided, and the excessive feed volume per unit time causes the beater to burst or shut down for protection due to overload.

[0053] Specifically, Figure 4 , Figure 4 The slag discharge valve is valve 160. Before starting the beater 1, set the starting frequency P0 of the beater 1 to 30-40Hz, the protection current A0 of the beater 1 to 110-130A (the start protection duration T1 is 30-90s), the valve opening start adjustment current A1 of the beater 1 to 80-100A, the initial valve opening K0 of the beater 1 to 25%-35%, the valve opening adjustment amplitude K1 of the beater 1 to 8%-12%, the valve opening adjustment time interval T0 of the beater 1 to 30-90s, and the initial valve opening current duration T1 to restore the initial valve opening. The duration T2 is 90 to 150s, and the current of beater 1 is monitored online in real time. When the current of beater 1 exceeds the set start-up adjustment current A1 and lasts longer than the valve opening adjustment interval T0, the valve opening of beater 1 is increased by K1. If the current of beater 1 is still higher than the set start-up adjustment current A1 and lasts longer than the valve opening adjustment interval T0, the valve opening of beater 1 is increased by K1 again, and this is carried out until the current of beater 1 recovers to below A1. When the current of beater 1 recovers to below A1 and lasts longer than T2, the valve opening of beater 1 is adjusted back to the initial set opening. During this process, if the current of beater 1 exceeds the protection current A0 of beater 1 and lasts longer than T1, the beater will be shut down for protection, and the pulping and sorting process equipment will be shut down in sequence from front to back according to the shutdown procedure, such as Figure 5 .

[0054] Specifically, the principle of the present invention is to control the initial valve opening of the kitchen waste pulping machine 1 in combination with the operating frequency of the pulping machine 1. The initial valve opening of the pulping machine 1 and the operating frequency of the pulping machine 1 affect the residence time of the quantitative material in the pulping machine 1, and also determine the pulping effect of the material. When the valve opening of the pulping machine 1 is constant, the higher the frequency of the pulping machine 1, the better the pulping effect of the organic matter, but the higher the granulation of the hard impurities, which also affects the subsequent separation of impurities and slurry. When the frequency of the pulping machine 1 is constant, the larger the valve opening, the shorter the pulping time, the worse the pulping effect of the organic matter, the worse the crushing effect of the debris, and the greater the negative impact on the subsequent conveying and separation equipment. The initial valve opening and the frequency of the pulping machine 1 in the actual use process need to be adjusted according to different processing requirements, so as to achieve both the pulping effect of the organic matter and the excessive crushing of the debris for easy separation; the PLC is used to interlock the current of the pulping machine 1 with the valve opening, and the valve opening is adjusted in real time by using the change of the current to achieve continuous and stable operation of the equipment under different material conditions. The problem of the beater shutting down for protection due to rising current caused by encountering hard or large objects is avoided, and the continuous change in the conveying efficiency of the front-end conveying equipment caused by the differences in the properties of kitchen waste in different time periods and batches, and the excessive feed volume per unit time causing the beater to burst or shut down for protection due to overload is avoided. During the pulping process of the kitchen waste pulper 1, the PLC is used to control the valve callback. After the pulper 1 opens the slag discharge valve due to current overload, the overload factor is eliminated, and the current is restored. The valve is promptly adjusted to the initial setting value to ensure the crushing time and crushing effect of the kitchen waste in the pulper 1.

[0055] Embodiment 1

[0056] A method for pulping and sorting kitchen waste includes the pulping system described above, and comprises the following steps:

[0057] 1. Parameter setting: before starting the beater 1, set the starting frequency P0 of the beater 1 to 30Hz, the protection current A0 of the beater 1 to 110A (the start protection duration T1 is 30s), the valve opening start adjustment current A1 of the beater 1 to 80A, the initial valve opening K0 of the beater 1 to 25%, the valve opening adjustment range K1 of the beater 1 to 8% to 12%, the valve opening adjustment time interval T0 of the beater 1 to 30s, and the duration T2 of restoring the initial valve opening current to 90s;

[0058] 2. Start in reverse order: After the parameters of the pulper 1 are set and confirmed, the sand remover 6, the squeeze dehydrator 5, the debris conveyor 7, the pulping and sorting machine 4, the elevator 3, the pulper 1, and the feeder 2 are started in sequence;

[0059] 3. Loading: After the beater 1 and its subsequent equipment are started, the loading device is started to transport the material to be processed into the beater 1. The beater 1 continuously provides the material to be processed. This step is continuous feeding;

[0060] 4. Beating: The material to be processed enters the beating process when it enters the beater 1. The feed and discharge of the beater are synchronized and the inflow and outflow are balanced. The current of the beater 1 is monitored online in real time. When the current of the beater 1 exceeds the set start-up adjustment current A1 and lasts longer than the valve opening adjustment interval T0, the valve opening of the beater 1 is increased by K1. If the current of the beater 1 is still higher than the set start-up adjustment current A1 and lasts longer than the valve opening adjustment interval T0, the valve opening of the beater 1 is increased by K1 again. This is carried out until the current of the beater 1 Restore to below A1. When the current of beater 1 is restored to below A1 and lasts longer than T2, the valve opening of beater 1 is adjusted back to the initial setting opening. During this process, if the current of beater 1 exceeds the protection current A0 of beater 1 and lasts longer than T1, or if the valve of beater 1 is lifted five times in succession and the current of beater 1 fails to be restored to below A1, beater 1 will be shut down for protection. When shutting down, loader 2, beater 1, elevator 3, pulping and sorting machine 4, debris conveyor 7, extrusion dehydrator 5, and sand remover 6 will be shut down in sequence.

[0061] 5. Discharging pulp: The pulping machine 1 discharges pulp and material simultaneously with the pulping process, and the material enters the subsequent conveying equipment. This step is a continuous operation.

[0062] Embodiment 2

[0063] A method for pulping and sorting kitchen waste includes the pulping system described above, and comprises the following steps:

[0064] 1. Parameter setting: before starting the beater 1, set the starting frequency P0 of the beater 1 to 35Hz, the protection current A0 of the beater 1 to 120A (the start protection duration T1 is 60s), the valve opening start adjustment current A1 of the beater 1 to 90A, the initial valve opening K0 of the beater 1 to 30%, the valve opening adjustment amplitude K1 of the beater 1 to 10%, the valve opening adjustment time interval T0 of the beater 1 to 60s, and the duration T2 of restoring the initial valve opening current to 120s;

[0065] 2. Start in reverse order: After the parameters of the pulper 1 are set and confirmed, the sand remover 6, the squeeze dehydrator 5, the debris conveyor 7, the pulping and sorting machine 4, the elevator 3, the pulper 1, and the feeder 2 are started in sequence;

[0066] 3. Loading: After the beater 1 and its subsequent equipment are started, the loading device is started to transport the material to be processed into the beater 1. The beater 1 continuously provides the material to be processed. This step is continuous feeding;

[0067] 4. Beating: The material to be processed enters the beating process when it enters the beater 1. The feed and discharge of the beater are synchronized and the inflow and outflow are balanced. The current of the beater 1 is monitored online in real time. When the current of the beater 1 exceeds the set start-up adjustment current A1 and lasts longer than the valve opening adjustment interval T0, the valve opening of the beater 1 is increased by K1. If the current of the beater 1 is still higher than the set start-up adjustment current A1 and lasts longer than the valve opening adjustment interval T0, the valve opening of the beater 1 is increased by K1 again. This is carried out until the current of the beater 1 Restore to below A1. When the current of beater 1 is restored to below A1 and lasts longer than T2, the valve opening of beater 1 is adjusted back to the initial setting opening. During this process, if the current of beater 1 exceeds the protection current A0 of beater 1 and lasts longer than T1, or if the valve of beater 1 is lifted five times in succession and the current of beater 1 fails to be restored to below A1, beater 1 will be shut down for protection. When shutting down, loader 2, beater 1, elevator 3, pulping and sorting machine 4, debris conveyor 7, extrusion dehydrator 5, and sand remover 6 will be shut down in sequence.

[0068] 5. Discharging pulp: The pulping machine 1 discharges pulp and material simultaneously with the pulping process, and the material enters the subsequent conveying equipment. This step is a continuous operation.

[0069] Embodiment 3

[0070] A method for pulping and sorting kitchen waste includes the pulping system described above, and comprises the following steps:

[0071] 1. Parameter setting: before starting the beater 1, set the starting frequency P0 of the beater 1 to 40Hz, the protection current A0 of the beater 1 to 130A (the start protection duration T1 is 90s), the valve opening start adjustment current A1 of the beater 1 to 100A, the initial valve opening K0 of the beater 1 to 35%, the valve opening adjustment amplitude K1 of the beater 1 to 12%, the valve opening adjustment time interval T0 of the beater 1 to 90s, and the duration T2 of restoring the initial valve opening current to 150s;

[0072] 2. Start in reverse order: After the parameters of the pulper 1 are set and confirmed, the sand remover 6, the squeeze dehydrator 5, the debris conveyor 7, the pulping and sorting machine 4, the elevator 3, the pulper 1, and the feeder 2 are started in sequence;

[0073] 3. Loading: After the beater 1 and its subsequent equipment are started, the loading device is started to transport the material to be processed into the beater 1. The beater 1 continuously provides the material to be processed. This step is continuous feeding;

[0074] 4. Beating: The material to be processed enters the beating process when it enters the beater 1. The feed and discharge of the beater are synchronized and the inflow and outflow are balanced. The current of the beater 1 is monitored online in real time. When the current of the beater 1 exceeds the set start-up adjustment current A1 and lasts longer than the valve opening adjustment interval T0, the valve opening of the beater 1 is increased by K1. If the current of the beater 1 is still higher than the set start-up adjustment current A1 and lasts longer than the valve opening adjustment interval T0, the valve opening of the beater 1 is increased by K1 again. This is carried out until the current of the beater 1 Restore to below A1. When the current of beater 1 is restored to below A1 and lasts longer than T2, the valve opening of beater 1 is adjusted back to the initial setting opening. During this process, if the current of beater 1 exceeds the protection current A0 of beater 1 and lasts longer than T1, or if the valve of beater 1 is lifted five times in succession and the current of beater 1 fails to be restored to below A1, beater 1 will be shut down for protection. When shutting down, loader 2, beater 1, elevator 3, pulping and sorting machine 4, debris conveyor 7, extrusion dehydrator 5, and sand remover 6 will be shut down in sequence.

[0075] 5. Discharging pulp: The pulping machine 1 discharges pulp and material simultaneously with the pulping process, and the material enters the subsequent conveying equipment. This step is a continuous operation.

[0076] The pulping material is kitchen waste generated by the classification of residents' garbage, with a moisture content of about 73%, VS of about 27%, and a bulk density of 610kg / m 3 The following table shows the experimental test data of the equipment loss after kitchen waste treatment and the organic matter content in the slurry according to Example 1, Example 2, Example 3 and the prior art.

[0077]

[0078] From the above table, it can be seen that after the present technical solution processes kitchen waste, compared with the prior art, the replacement cycle of the blade is greatly extended, the amount of sand accumulation is greatly reduced, and the content of organic matter in the slurry is high. The amount of sand accumulation kg / t refers to how many kg of sand is produced per ton of kitchen waste, and the amount of sand accumulation refers to the content of sand in the sand remover 6.

[0079] Based on the above scheme, if various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the scope of the claims and equivalent technologies of the present invention, the present invention is also intended to include these changes and modifications.

Claims

1. A method for operating a kitchen waste pulping and sorting system, characterized in that: It includes the following steps:

1. Parameter setting: before starting the beater (1), set the starting frequency P0 of the beater (1) to 30-40 Hz, the protection current A0 of the beater (1) to 110-130 A, the start protection duration T1 to 30-90 s, the valve opening start adjustment current A1 of the beater (1) to 80-100 A, the initial valve opening K0 of the beater (1) to 25%-35%, the valve opening adjustment amplitude K1 of the beater (1) to 8%-12%, the valve opening adjustment time interval T0 of the beater (1) to 30-90 s, and the initial valve opening current duration T2 to 90-150 s; 2. Start in reverse order: After the parameters of the beater (1) are set and confirmed, the pre-treatment equipment will start in reverse order; 3. Loading: After the pulping machine (1) and its subsequent equipment are started, the loading device is started to transport the material to be processed into the pulping machine (1). The pulping machine (1) continuously supplies the material to be processed. This step is continuous feeding; IV. Beating: When the material to be processed enters the beater (1), it enters the beating process. The feed and discharge of the beater are synchronized and the feed and discharge are balanced. The current of the beater (1) is monitored online in real time. When the current of the beater (1) exceeds the set start-up adjustment current A1 and lasts longer than the valve opening adjustment interval T0, the valve opening of the beater (1) is increased by K1. If the current of the beater (1) is still higher than the set start-up adjustment current A1 and lasts longer than the valve opening adjustment interval T0, the valve opening of the beater (1) is increased by K1 again. This is carried out until the current of the beater (1) recovers to below A1. When the current of the beater (1) recovers to below A1 and lasts longer than T2, the valve opening of the beater (1) is adjusted back to the initial set opening. During this process, if the current of the beater (1) exceeds the protection current A0 of the beater (1) and lasts longer than T1, or if the current of the beater (1) fails to recover to below A1 after the valve of the beater (1) is lifted five times in succession, the beater (1) will be shut down for protection; 5. Discharging pulp: (1) Discharging pulp and beating are carried out simultaneously, and the material enters the subsequent conveying equipment. This step is a continuous operation; The structure of the kitchen waste pulping and sorting system comprises a pulping machine (1), wherein the pulping machine (1) comprises: Tank (110); The rotor (120) is used to crush the material to be processed. The rotor (120) is arranged in the tank body (110), and the motor (130) drives the rotor (120) to rotate; A feed inlet (140), wherein the feed inlet (140) is disposed on the upper surface of the tank body (110); A discharge port (150) is used to realize synchronous slurry discharge and material discharge, and the discharge port (150) is arranged on the side of the tank body (110); A valve (160), wherein the valve (160) is disposed at a position on the side of the tank body (110) corresponding to the discharge port (150); The control mechanism (170) is used to control the opening degree of the valve (160), and the control mechanism (170) is connected to the valve (160).

2. The method for operating a kitchen waste pulping and sorting system according to claim 1, characterized in that: The rotor (120) is a chain hammer type cutter disc.

3. The method for operating a kitchen waste pulping and sorting system according to claim 1, characterized in that: The control mechanism (170) is a hydraulic cylinder, and the hydraulic rod of the hydraulic cylinder is connected to the valve (160).

4. The method for operating a kitchen waste pulping and sorting system according to claim 1, characterized in that: It also includes: A transmission shaft (121), wherein the upper end of the transmission shaft (121) is connected to the rotor (120); A first pulley (122), wherein the first pulley (122) is arranged on an output shaft of the motor (130); A second pulley (123), wherein the second pulley (123) is arranged at the lower end of the transmission shaft (121); A belt (124), wherein the belt (124) is respectively arranged on the first pulley (122) and the second pulley (123).

5. The method for operating a kitchen waste pulping and sorting system according to claim 1, characterized in that: It also includes a feeder (2), an elevator (3), a pulping and sorting machine (4), an extrusion dewatering machine (5), a sand remover (6) and a debris conveyor (7). The feeder (2), the pulping machine (1), the elevator (3) and the pulping and sorting machine (4) are connected in sequence. The debris conveyor (7) is connected to the slag discharge port of the pulping and sorting machine (4) and the feed port of the extrusion dewatering machine (5). The pulp discharge port of the pulping and sorting machine (4) and the pulp discharge port of the extrusion dewatering machine (5) are respectively connected to the sand remover (6).

6. The method for operating a kitchen waste pulping and sorting system according to claim 5, characterized in that: It also includes: A controller (8), a power module (9) and a current sensor (10) for detecting the current of the motor (130), wherein the controller (8) is electrically connected to the feeder (2), the motor (130), the control mechanism (170), the elevator (3), the pulping and sorting machine (4), the squeezing and dewatering machine (5), the sand removing machine (6) and the debris conveyor (7) respectively through the power module (9); The current sensor (10) transmits the collected signal to the controller (8), and the controller (8) transmits the feedback signal to the control mechanism (170), and the control mechanism (170) controls the opening degree of the valve (160).

7. The method for operating a kitchen waste pulping and sorting system according to claim 1, characterized in that: The reverse order of the steps in step 2 is a sand remover (6), an extrusion dewatering machine (5), a debris conveyor (7), a pulping and sorting machine (4), an elevator (3), a pulping machine (1), and a feeder (2).

8. The method for operating a kitchen waste pulping and sorting system according to claim 1, characterized in that: The shutdown in step 3 is to shut down the pretreatment equipment in sequence, which is the feeder (2), the pulper (1), the elevator (3), the pulping and sorting machine (4), the debris conveyor (7), the squeezing and dewatering machine (5), and the sand remover (6).

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