Slurry treatment system

Abstract

The utility model provides a slurry treatment system, and relates to the technical field of slurry treatment. The slurry treatment system comprises a feeding machine, a first shredding machine, a pre-washing machine, a first conveyor, a second conveyor and a metal detector; the feeding machine is used for feeding waste slurry mixed with metal foreign matters; the feeding end of the first shredding machine is connected with the discharging end of the feeding machine; the feeding end of the pre-washing machine is connected with the discharging end of the first shredding machine, and the pre-washing machine is provided with a first discharging end and a second discharging end; the feeding end of the first conveyor is connected with the second discharging end; the feeding end of the second conveyor is connected with the discharging end of the first conveyor, and the second conveyor is provided with a first output end and a second output end; the metal detector is arranged on the first conveyor and / or the second conveyor. Through the arrangement of the first shredding machine, metal foreign matters are crushed into small blocks, then the metal foreign matters are sorted out through the metal detector, and finally, slurry is recycled through the arrangement of other elements.

Description

Technical Field

[0001] The present application relates to the technical field of slurry processing, and in particular to a slurry processing system. Background Art

[0002] When producing battery positive electrodes, the positive electrode material must first be made into slurry, and then the slurry is coated on the surface of aluminum foil. A certain amount of waste slurry will be generated in the production process. These waste slurries contain a large amount of lithium and valuable materials such as N-methylpyrrolidone (NMP for short). Therefore, the waste slurry is generally packaged and sealed in plastic bags, and then collected in ton barrels. However, ton barrels are often mixed with metallic foreign matter, which is mixed between many plastic bags and is difficult to sort.

[0003] To this end, a slurry processing system is now provided. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a slurry processing system, aiming to solve the technical problem of metal foreign matter mixed into waste slurry in the prior art.

[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0006] The embodiment of the present application provides a slurry processing system, the slurry processing system comprising:

[0007] Feeder, used to feed waste slurry mixed with metallic foreign matter;

[0008] a first shredder, wherein a feeding end of the first shredder is connected to a discharging end of the feeder;

[0009] A pre-washer, wherein the feed end of the pre-washer is connected to the discharge end of the first shredder, the pre-washer is provided with a first discharge end and a second discharge end, the first discharge end is used for discharging liquid slurry, and the second discharge end is used for discharging a solid-liquid mixture;

[0010] a first conveyor, wherein a feeding end of the first conveyor is connected to the second discharging end;

[0011] A second conveyor, wherein a feed end of the second conveyor is connected to a discharge end of the first conveyor, and the second conveyor is provided with a first output end and a second output end; and

[0012] A metal detector is installed on the first conveyor and / or the second conveyor. When the metal detector detects metal, the solid-liquid mixture is conveyed to the first output end. When the metal detector does not detect metal, the solid-liquid mixture is conveyed to the second output end.

[0013] In one embodiment, the slurry processing system also includes a third conveyor, a second shredder, a fourth conveyor and a cleaning machine connected in sequence, the feed end of the third conveyor is connected to the second output end, the cleaning machine is provided with a first discharge port and a second discharge port, the first discharge port is used to discharge liquid slurry, and the second discharge port is used to discharge solid.

[0014] In one embodiment, the cleaning machine includes a forced friction cleaning part and an ultrasonic cleaning part connected to each other, the feed end of the forced friction cleaning part is connected to the discharge end of the fourth conveyor, and the ultrasonic cleaning part is provided with the first discharge port and the second discharge port.

[0015] In one of the embodiments, the slurry processing system further comprises a vertical diaphragm baler, and a feed end of the vertical diaphragm baler is connected to the second discharge port.

[0016] In one of the embodiments, the slurry processing system further includes a first storage tank, and the first discharge end and the first discharge port are respectively connected to the first storage tank.

[0017] In one embodiment, the slurry processing system further includes a fifth conveyor, wherein the fifth conveyor is disposed between the first discharge end and the first storage tank.

[0018] In one of the embodiments, the feeder includes a main body, a lifting structure and a dump bucket, the main body is slidably connected to the lifting structure, and the lifting structure is fixedly connected to the dump bucket.

[0019] In one embodiment, the discharge end of the first conveyor is arranged higher than the feed end of the first conveyor, and a plurality of transport buckets are arranged on the first conveyor.

[0020] In one embodiment, the second conveyor is arranged horizontally, and a feeding end of the second conveyor is located between the first output end and the second output end.

[0021] In one of the embodiments, the slurry processing system further includes a tail gas treatment machine, and the tail gas treatment machine is connected to the first shredder.

[0022] The beneficial effects of this application are:

[0023] The present application provides a slurry processing system with a high degree of automation. On the one hand, the present application can tear up plastic bags, clean them, and pack and discharge them, thereby improving the recovery rate of the slurry. On the other hand, the present application can break metal foreign matter into small pieces and automatically sort and discharge them, thereby preventing the metal foreign matter from damaging the slurry processing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a slurry processing system in some embodiments of the present application is shown;

[0026] Figure 2 A schematic diagram of the structure of a feeder in some embodiments of the present application is shown;

[0027] Figure 3 A schematic diagram showing the connection between the first shredder and the pre-washer in some embodiments of the present application is shown;

[0028] Figure 4 A partial structural diagram of a slurry processing system in some embodiments of the present application is shown. Figure 1 ;

[0029] Figure 5 A partial structural diagram of a slurry processing system in some embodiments of the present application is shown. Figure 2 ;

[0030] Figure 6 A schematic diagram showing the connection between the second shredder and the fourth conveyor in some embodiments of the present application is shown;

[0031] Figure 7 It shows a schematic diagram of the structure of a cleaning machine in some embodiments of the present application;

[0032] Figure 8 Another structural schematic diagram of a slurry processing system in some embodiments of the present application is shown;

[0033] Fig. 9 A flow chart showing the principle of use of a slurry processing system in some embodiments of the present application is shown.

[0034] Description of main component symbols:

[0035] 100-slurry processing system; 101-feeder; 1011-main body; 1012-lifting structure; 1013-tipping bucket; 102-first shredder; 1021-first hopper; 103-pre-washer; 1031-first discharge end; 1032-second discharge end; 104-first conveyor; 105-second conveyor; 1051-first output end; 1052-second output end; 106-metal detector; 107-third conveyor; 108-second shredder; 1081-second hopper; 109-fourth conveyor; 110-cleaning machine; 1101-forced friction cleaning part; 1102-ultrasonic cleaning part; 1102a-second discharge port; 120-vertical diaphragm baler; 130-fifth conveyor; 140-exhaust gas treatment machine. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0037] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of the present application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0038] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] The embodiment of the present application is used to solve the problem of metal foreign matter mixed in the waste slurry. The waste slurry referred to here is packaged in a plastic bag and collected in a ton barrel. The ton barrel is mixed with metal foreign matter, and the metal foreign matter includes but is not limited to metal plates, screws and nuts, steel pipes, wrenches, etc. For the convenience of description and understanding, the embodiment of the present application defines the waste slurry mixed with metal foreign matter as material, wherein the waste slurry in the plastic bag is in a liquid or solid state or a solid-liquid mixed state.

[0041] Due to the large size of the ton barrel and the metal foreign matter mixed in many plastic bags, it is not easy to sort out the metal. Therefore, when recycling the waste slurry, all the materials in the ton barrel can only be processed directly.

[0042] See also Figure 1 An embodiment of the present application provides a slurry processing system 100, which includes a feeder 101, a first shredder 102, a pre-washer 103, a first conveyor 104, a second conveyor 105 and a metal detector 106.

[0043] See also Figure 2 The feeder 101 is used to feed waste slurry mixed with metal foreign matter. The feeder 101 includes a main body 1011, a lifting structure 1012 and a tipping bucket 1013. The main body 1011 is slidably connected to the lifting structure 1012, and the lifting structure 1012 is fixedly connected to the tipping bucket 1013. The lifting structure 1012 slides relative to the main body 1011 to drive the lifting and lowering of the tipping bucket 1013.

[0044] It can be understood that when the tipping bucket 1013 rises to a preset height, the tipping bucket 1013 forms a discharge end, and when the tipping bucket 1013 descends to an initial height, the tipping bucket 1013 forms a feed end.

[0045] Please refer to Figures 1 to 3, the first shredder 102, the feeding end of the first shredder 102 is connected to the discharging end of the feeder 101, specifically, the feeding end of the first shredder 102 is a first hopper 1021 with an opening upward, and the first hopper 1021 is funnel-shaped. When the tipping bucket 1013 rises to a preset height and turns over, the first hopper 1021 corresponds to the tipping bucket 1013, thereby ensuring that the material is completely poured into the first hopper 1021 to prevent the material from being scattered.

[0046] The material is poured into the tipping bucket 1013 by a forklift, and after the lifting structure 1012 drives the tipping bucket 1013 to rise to a preset height, the tipping bucket 1013 flips over to pour the material into the first shredder 102, and then the lifting structure 1012 drives the tipping bucket 1013 down to the initial height, waiting for the next start.

[0047] In the embodiment of the present application, the first shredder 102 is configured as a double-shaft shredder. The first shredder 102 has a low rotation speed and a large tooth spacing, which is suitable for shredding harder materials and is not prone to knife jamming. After the material enters the first shredder 102, the metal foreign matter is shredded into small pieces, the plastic bag of the waste slurry is also shredded, and the liquid slurry flows out.

[0048] In the embodiment of the present application, the first shredder 102 shreds the complete plastic bag into large plastic bags of 100-400 mm in size, and after the plastic bag is shredded, the liquid slurry in the plastic bag will flow out naturally.

[0049] The pre-washer 103 is located below the first shredder 102, and the feed end of the pre-washer 103 is connected to the discharge end of the first shredder 102. The pre-washer 103 is provided with a first discharge end 1031 and a second discharge end 1032. The first discharge end 1031 is located below the pre-washer 103 and is used to discharge liquid slurry, and the second discharge end 1032 is located on the left side of the pre-washer 103 and is used to discharge a solid-liquid mixture.

[0050] After the material enters the pre-washer 103 from top to bottom, it begins to be stirred and rubbed. After cleaning, the liquid slurry is output from the first discharge end 1031 at the bottom, and the solid-liquid mixture is output from the second discharge end 1032 on the left. The solid-liquid mixture here includes plastic bags, metal foreign matter and liquid slurry adhering to the plastic bags. The embodiment of the present application realizes the first recovery of the liquid slurry through the pre-washer 103, and preliminarily separates the useful liquid slurry.

[0051] Please refer to Figure 3 , Figure 4 and Figure 5The first conveyor 104 is configured as a belt conveyor. The first conveyor 104 is used to convey a solid-liquid mixture. To prevent leakage of the solid-liquid mixture on the first conveyor 104, the embodiment of the present application provides a plurality of transport buckets on the first conveyor 104. When the first conveyor 104 runs at a preset speed, the plurality of transport buckets sequentially pass under the second discharge end 1032, and the solid-liquid mixture enters the transport buckets.

[0052] It is worth noting that, since the liquid slurry is initially separated and recovered in the pre-washer 103, the liquid proportion of the solid-liquid mixture on the first conveyor 104 is greatly reduced, which facilitates transportation and subsequent sorting and processing.

[0053] The feed end of the first conveyor 104 is connected to the second discharge end 1032. In the embodiment of the present application, the belt of the first conveyor 104 is set at an angle of 15° to the ground, that is, the feed end of the first conveyor 104 is set close to the ground, and the discharge end of the first conveyor 104 is set higher than the feed end of the first conveyor 104, thereby continuously raising the height of the solid-liquid mixture during the conveying process until the transport bucket reaches the discharge end of the first conveyor 104, and the transport bucket flips down to pour out the solid-liquid mixture.

[0054] The second conveyor 105 is configured as a bidirectional conveyor belt, and the feed end of the second conveyor 105 is connected to the discharge end of the first conveyor 104, and the second conveyor 105 is provided with a first output end 1051 and a second output end 1052. Specifically, the second conveyor 105 is horizontally arranged, that is, the feed end, the first output end 1051 and the second output end 1052 of the second conveyor 105 are located on the same horizontal plane, and the feed end is located between the first output end 1051 and the second output end 1052, and the first output end 1051 and the second output end 1052 are respectively located at two ends of the second conveyor 105, to ensure that the solid-liquid mixture will not roll due to the action of gravity when being transported by the second conveyor 105.

[0055] It is worth noting that when the transport bucket of the first conveyor 104 pours the solid-liquid mixture onto the second conveyor 105 bucket by bucket, according to the detection results of the metal detector 106 described later, the second conveyor 105 moves in the first direction and transports a bucket of solid-liquid mixture with metal foreign matter to the first output end 1051, or the second conveyor 105 moves in a second direction opposite to the first direction, thereby transporting a bucket of solid-liquid mixture without metal foreign matter to the second output end 1052.

[0056] The metal detector 106 is installed on the first conveyor 104 and / or the second conveyor 105. When the metal detector 106 detects metal, the solid-liquid mixture is conveyed to the first output terminal 1051. When the metal detector 106 does not detect metal, the solid-liquid mixture is conveyed to the second output terminal 1052. Therefore, the first output terminal 1051 outputs a solid-liquid mixture with metal foreign matter. The solid-liquid mixture here includes both metal foreign matter and adhesive tape and liquid slurry adhered to the plastic bag. The second output terminal 1052 outputs a plastic bag and liquid slurry adhered to the plastic bag. The embodiment of the present application realizes the sorting of metal foreign matter through the second conveyor 105 to avoid damage to the back-end equipment caused by metal foreign matter.

[0057] It is worth noting that, by setting the second conveyor 105 horizontally, the solid-liquid mixture with metallic foreign matter is sorted out, and the solid-liquid mixture without metallic foreign matter is continued for subsequent processing, thereby reducing the incidence of misjudgment in sorting and having a good sorting effect.

[0058] In some embodiments, the metal detector 106 is installed on the first conveyor 104. When the solid-liquid mixture passes through the metal detector 106, the time it takes for the detected solid-liquid mixture to reach the second conveyor 105 is calculated based on the running speed of the first conveyor 104 and the distance between the metal detector 106 and the second conveyor 105, so as to control the running direction of the second conveyor 105 at this time point. Therefore, it has the function of early prediction, and the second conveyor 105 can keep running, thereby improving the sorting efficiency.

[0059] Since the proportion of metal foreign matter in the solid-liquid mixture is about 0.2%, the solid-liquid mixture is mainly plastic bags and liquid slurry adhering to the plastic bags. The second conveyor 105 generally conveys to the second output end 1052. Only when metal foreign matter is detected, when the metal foreign matter reaches the second conveyor 105, the second conveyor 105 reverses to the first output end 1051 for conveying, and after the metal foreign matter is output, the second conveyor 105 again turns forward to the second output end 1052 for conveying.

[0060] The second conveyor 105 can collect liquid slurry to the greatest extent while sorting out metal foreign matter, thereby reducing the waste of valuable materials and having a good application prospect.

[0061] In some embodiments, the metal detector 106 is installed at the feeding end of the second conveyor 105. When the solid-liquid mixture passes through the metal detector 106, the running direction of the second conveyor 105 is directly controlled, and the sorting accuracy is higher.

[0062] In some embodiments, the metal detectors 106 are installed on the first conveyor 104 and the second conveyor 105 to improve the fault tolerance of the embodiment of the present application. Even if one of the metal detectors 106 is damaged, it will not immediately have an adverse effect on the sorting, providing buffer time for maintenance.

[0063] Please continue reading Figure 1 , Figure 4 and Figure 5 The slurry processing system 100 also includes a third conveyor 107 , a second shredder 108 , a fourth conveyor 109 and a cleaning machine 110 which are connected in sequence, and a feed end of the third conveyor 107 is connected to the second output end 1052 .

[0064] The third conveyor 107 is configured as a shaftless screw conveyor, and the third conveyor 107 is set at an angle to the ground, that is, the feed end of the third conveyor 107 is set close to the second output end 1052, and the discharge end of the third conveyor 107 is set higher than the feed end of the third conveyor 107. The plastic bag or solid slurry continues to rise during the conveying process of the third conveyor 107.

[0065] See also Figure 4 and Figure 6 The second shredder 108 is provided with a second hopper 1081, and the second hopper 1081 is arranged corresponding to the discharge end of the third conveyor 107. Therefore, the plastic bags and solid slurry can be directly poured into the second hopper 1081 after being lifted by the third conveyor 107, without manual feeding, and the degree of automation is high.

[0066] Please continue reading Figure 1 The second shredder 108 is configured as a double-roll shredder. The second shredder 108 has the advantages of high rotation speed and strong shredding force, and is particularly suitable for shredding soft materials such as plastic bags and solid slurry to obtain small-volume shreds. The embodiment of the present application sets the first shredder 102 and the second shredder 108 correspondingly according to different objects to be shredded, effectively improving the shredding efficiency and reducing equipment failures.

[0067] In the embodiment of the present application, the second shredder 108 shreds the large plastic bags of 100-400 mm into pieces of 40-100 mm.

[0068] The fourth conveyor 109 is also configured as a shaftless screw conveyor. Similar to the third conveyor 107, the fourth conveyor 109 is also set at an angle to the ground, that is, the feed end of the fourth conveyor 109 is close to the discharge end of the second shredder 108, and the discharge end of the fourth conveyor 109 is set higher than the feed end of the fourth conveyor 109. The crushed materials continue to rise during the conveying process of the fourth conveyor 109.

[0069] See also Figure 1 and Figure 7The cleaning machine 110 is provided with a first discharge port (not shown in the figure) and a second discharge port 1102a, the first discharge port is used to discharge liquid slurry, and the second discharge port 1102a is used to discharge solid. Specifically, the cleaning machine 110 includes a forced friction cleaning part 1101 and an ultrasonic cleaning part 1102 connected to each other. In the embodiment of the present application, the slurry adhering to the fragments is cleaned by the cleaning machine 110. Compared with the shredded plastic bags that have only been processed by the first shredder 102 but not by the second shredder 108, the volume of the fragments is smaller, the cleaning difficulty is lower, and the slurry recovery rate is improved.

[0070] The feed end of the forced friction cleaning section 1101 is connected to the discharge end of the fourth conveyor 109. Specifically, the feed end of the forced friction cleaning section 1101 is opened upward. Therefore, after the crushed materials are lifted by the fourth conveyor 109, they directly enter the forced friction cleaning section 1101 for tumbling and friction, saving labor costs.

[0071] The ultrasonic cleaning section 1102 and the forced friction cleaning section 1101 are arranged side by side, and the feed end of the ultrasonic cleaning section 1102 is connected to the discharge end of the forced friction cleaning section 1101. The crushed materials after friction cleaning enter the ultrasonic cleaning section 1102 for vibration cleaning, and the ultrasonic cleaning section 1102 is provided with a first discharge port and a second discharge port 1102a. The first discharge port is used to discharge liquid slurry, and the second discharge port 1102a is used to discharge the crushed materials after cleaning.

[0072] The embodiment of the present application realizes the second recovery of liquid slurry through the cleaning machine 110, further separates the useful liquid slurry, greatly improves the recovery of slurry, reduces the waste of valuable materials, and reduces production costs.

[0073] The slurry processing system 100 also includes a vertical diaphragm baler 120, the feed end of which is connected to the second discharge port 1102a. Therefore, after the crushed materials are output from the second discharge port 1102a, they enter the vertical diaphragm baler 120 for sorting and packaging. The vertical diaphragm baler 120 can greatly reduce the volume of the crushed materials and reduce the difficulty of recycling.

[0074] It is worth noting that if plastic parts such as plastic gloves and plastic filter cartridges are mixed in the ton barrel, the plastic parts and plastic bags have the same processing process, that is, the plastic parts and plastic bag fragments are finally packaged as a whole in the vertical diaphragm baler 120 after a series of treatments.

[0075] In some embodiments, the slurry processing system 100 further includes a fifth conveyor 130 and a first storage tank, the first discharge end 1031 and the first discharge port are respectively connected to the first storage tank, and the fifth conveyor 130 is disposed between the first discharge end 1031 and the first storage tank.

[0076] The fifth conveyor 130 is configured as a slurry screw conveyor, and the fifth conveyor 130 conveys the liquid slurry from the pre-washer 103 to the first storage tank.

[0077] The ultrasonic cleaning unit 1102 transports the liquid slurry to the first storage tank through a pipeline.

[0078] It is understandable that the first storage tank can be a large tank or two small tanks. The number and shape of the first storage tanks can be flexibly configured according to the actual site conditions and the requirements of the slurry processing system 100.

[0079] See also Figure 1 and Figure 5 In some embodiments, the slurry processing system 100 further includes a second storage tank, which is connected to the first output end 1051. The second storage tank is used to collect shredded metal foreign matter.

[0080] The embodiment of the present application has good automatic operation capabilities. On the one hand, the embodiment of the present application can tear up, clean and pack the plastic bags for discharge, and recycle the slurry, thereby reducing labor costs and improving the slurry recovery rate. On the other hand, the embodiment of the present application can break the metal foreign matter mixed in the waste slurry into small pieces, and automatically sort out the metal foreign matter to avoid damage to the back-end equipment.

[0081] See also Figure 1 and Figure 8 The slurry processing system 100 further includes a tail gas treatment machine 140 , and the tail gas treatment machine 140 is connected to the first shredder 102 .

[0082] The tail gas treatment machine 140 is also connected to the second shredder 108 and the cleaning machine 110. Specifically, the first shredder 102, the second shredder 108 and the cleaning machine 110 are respectively connected to the tail gas treatment machine 140 through pipelines. The tail gas treatment machine 140 is used to treat the NMP waste gas and water vapor generated by the first shredder 102, the second shredder 108 and the cleaning machine 110, introduce the NMP waste gas and water vapor into water for dissolution, and perform chemical treatment to form pollution-free substances before discharging them.

[0083] Furthermore, the slurry processing system 100 also includes a controller and multiple flow control valves. At least one flow control valve is set corresponding to the locations where water is needed, such as the pre-washer 103 and the cleaning machine 110. Under the premise of ensuring the flushing effect, water resources are saved as much as possible to ensure that the output slurry concentration meets the process requirements.

[0084] The embodiment of the present application can achieve the maximum recovery rate, and the proportion of slurry remaining on the crushed material is less than 5%.

[0085] Please base on Figure 1 and Fig. 9 Referring to the following figures, the use principle of the slurry processing system 100 is further described in the embodiment of the present application as follows:

[0086] S100 . The waste slurry mixed with metallic foreign matter is fed into the feeder 101 , and the feeder 101 feeds the waste slurry into the first shredder 102 .

[0087] See also Figure 2 The operator uses auxiliary equipment such as a forklift or a hydraulic pallet truck to move the ton barrel, and pours the material in the ton barrel directly into the tipping bucket 1013 of the feeder 101, and then controls the lifting structure 1012 to rise to a preset height, and then the tipping bucket 1013 flips over to pour the material into the first shredder 102, and then the lifting structure 1012 drives the tipping bucket 1013 to descend to the initial height, waiting for the next start.

[0088] S200 . The first shredder 102 shreds the waste slurry and metallic foreign matter to obtain liquid slurry and a solid-liquid mixture, and then transports the liquid slurry and the solid-liquid mixture to the pre-washer 103 .

[0089] After the material enters the first shredder 102, the metal foreign matter is shredded into small pieces, the plastic bag of the waste slurry is also shredded, and the liquid slurry flows out. Here, the small pieces of metal foreign matter and the plastic bag are uniformly defined as a solid-liquid mixture to distinguish them from the liquid slurry. At this time, the concentration of the liquid slurry is relatively high and needs to be diluted.

[0090] See also Figure 3 .

[0091] S300. The pre-washer 103 stirs and rubs the solid-liquid mixture, and the liquid slurry is output from the first discharge end 1031, and the solid-liquid mixture is output from the second discharge end 1032.

[0092] The solid-liquid mixture and the liquid slurry are conveyed together to the pre-washer 103 for stirring and friction cleaning. On the one hand, part of the liquid slurry adhering to the plastic bag can be separated to reduce the residual amount of the liquid slurry. On the other hand, water is mixed and diluted with the liquid slurry to obtain a slurry with a concentration that meets the process requirements.

[0093] In the embodiment of the present application, the slurry that meets the process requirements is in liquid form, and the liquid slurry is output from the first discharge end 1031 and collected and stored in the first storage tank.

[0094] See also Figure 5 .

[0095] S400 . The solid-liquid mixture is conveyed to the second conveyor 105 via the first conveyor 104 , and detected by the metal detector 106 .

[0096] The embodiment of the present application transports the solid-liquid mixture through multiple transport buckets of the first conveyor 104. Specifically, below the second discharge end 1032 (that is, the transport bucket is located at the feed end of the first conveyor 104), the transport bucket is set upward, and the solid-liquid mixture falls from the second discharge end 1032 into the transport bucket. During the transportation process, the transport bucket maintains an upward posture and continues to run. When the transport bucket reaches the discharge end of the first conveyor 104, the transport bucket flips down, and the solid-liquid mixture is poured onto the second conveyor 105.

[0097] When the metal detector detects metal, the second conveyor 105 moves in a first direction and outputs the solid-liquid mixture from the first output end 1051. When the metal detector does not detect metal, the second conveyor 105 moves in a second direction opposite to the first direction and outputs the solid-liquid mixture from the second output end 1052.

[0098] In this step, the metal foreign matter is sorted. In the embodiment of the present application, the first direction is defined as reverse rotation, and the second direction is defined as forward rotation. The second conveyor 105 is reversed, and the metal foreign matter is output through the first output end 1051 and collected and stored in the second storage tank. Alternatively, the second conveyor 105 is forward rotated, and the plastic bag and the liquid slurry adhered to the plastic bag are output from the second output end 1052 for the next step of processing.

[0099] S500. The solid-liquid mixture is conveyed to the second shredder 108 through the third conveyor 107 for secondary crushing to obtain crushed materials.

[0100] The plastic bag and the solid pulp are torn into small pieces by the second shredder 108, which is more convenient for subsequent cleaning and improves the recovery rate of the pulp.

[0101] See also Figure 1 and Figure 7 .

[0102] S600. The crushed materials are conveyed to the cleaning machine 110 for cleaning via the fourth conveyor 109 to obtain liquid slurry and cleaned crushed materials.

[0103] The crushed materials are first repeatedly rubbed and kneaded in the forced friction cleaning section 1101 while slowly moving forward, and then enter the ultrasonic cleaning section 1102, where the crushed materials are vibrated and washed at high frequency while continuing to slowly move forward.

[0104] The liquid slurry is discharged from the first discharge port, and the cleaned crushed materials are discharged from the second discharge port 1102a.

[0105] S700. The crushed materials are conveyed to the vertical diaphragm baler 120 for baling.

[0106] The crushed materials enter the vertical diaphragm baler 120 from the ultrasonic cleaning section 1102 and are compressed and baled.

[0107] In the embodiment of the present application, the operator only needs to pour the material into the feeder 101 at regular intervals to continuously recycle the waste slurry and obtain valuable materials. The embodiment of the present application is designed according to the actual production scenario, and has the functions of automatic crushing, detection and sorting of metal foreign matter. It is compatible with various working conditions on site, avoids manual selection of foreign matter, and greatly reduces the operating difficulty and safety risks of employees. Among them, the high-precision metal detector 106 effectively screens out metal foreign matter to prevent damage to equipment.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0109] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A slurry processing system, characterized in that: include: A feeder (101) is used to feed waste slurry mixed with metallic foreign matter; A first shredder (102), wherein a feeding end of the first shredder (102) is connected to a discharging end of the feeder (101); A pre-washer (103), wherein the feed end of the pre-washer (103) is connected to the discharge end of the first shredder (102), and the pre-washer (103) is provided with a first discharge end (1031) and a second discharge end (1032), wherein the first discharge end (1031) is used to discharge liquid slurry, and the second discharge end (1032) is used to discharge a solid-liquid mixture; A first conveyor (104), wherein a feeding end of the first conveyor (104) is connected to the second discharging end (1032); a second conveyor (105), wherein a feeding end of the second conveyor (105) is connected to a discharging end of the first conveyor (104), and the second conveyor (105) is provided with a first output end (1051) and a second output end (1052); and A metal detector (106), wherein the metal detector (106) is installed on the first conveyor (104) and / or the second conveyor (105); when the metal detector (106) detects metal, the solid-liquid mixture is conveyed to the first output end (1051); when the metal detector (106) does not detect metal, the solid-liquid mixture is conveyed to the second output end (1052).

2. The slurry processing system according to claim 1, characterized in that: It also includes a third conveyor (107), a second shredder (108), a fourth conveyor (109) and a cleaning machine (110) which are connected in sequence, wherein the feed end of the third conveyor (107) is connected to the second output end (1052), and the cleaning machine (110) is provided with a first discharge port and a second discharge port (1102a), wherein the first discharge port is used for discharging liquid slurry, and the second discharge port (1102a) is used for discharging solid.

3. The slurry processing system according to claim 2, characterized in that: The cleaning machine (110) comprises a forced friction cleaning section (1101) and an ultrasonic cleaning section (1102) which are connected to each other, the feeding end of the forced friction cleaning section (1101) is connected to the discharging end of the fourth conveyor (109), and the ultrasonic cleaning section (1102) is provided with the first discharging port and the second discharging port (1102a).

4. The slurry processing system according to claim 3, characterized in that: It also includes a vertical diaphragm baler (120), wherein the feed end of the vertical diaphragm baler (120) is connected to the second discharge port (1102a).

5. The slurry processing system according to claim 4, characterized in that: It also includes a first storage tank, and the first discharge end (1031) and the first discharge port are respectively connected to the first storage tank.

6. The slurry processing system according to claim 5, characterized in that: It also includes a fifth conveyor (130), which is arranged between the first discharge end (1031) and the first storage tank.

7. The slurry processing system according to any one of claims 1 to 6, characterized in that: The feeder (101) comprises a main body (1011), a lifting structure (1012) and a tipping bucket (1013); the main body (1011) is slidably connected to the lifting structure (1012), and the lifting structure (1012) is fixedly connected to the tipping bucket (1013).

8. The slurry processing system according to any one of claims 1 to 6, characterized in that: The discharge end of the first conveyor (104) is arranged higher than the feed end of the first conveyor (104), and a plurality of transport buckets are arranged on the first conveyor (104).

9. The slurry processing system according to any one of claims 1 to 6, characterized in that: The second conveyor (105) is arranged horizontally, and the feeding end of the second conveyor (105) is located between the first output end (1051) and the second output end (1052).

10. The slurry processing system according to any one of claims 1 to 6, characterized in that: It also includes an exhaust gas treatment machine (140), and the exhaust gas treatment machine (140) is connected to the first shredder (102).

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