Recycling equipment

Abstract

The utility model provides recycling equipment which comprises a water washing device, a recycling device, a pretreatment device, a first reverse osmosis device, a water production device, a second reverse osmosis device, a first conductivity tester, a second conductivity tester and a third conductivity tester, a first concentrated salt water outlet of the first reverse osmosis device is communicated with the pretreatment device and the management tank through a first three-way valve, the water production device is provided with a first water inlet, and a second purified water outlet of the second reverse osmosis device is communicated with the water production device and the washing device through a second three-way valve; a second concentrated salt water outlet of the second reverse osmosis device is communicated with the pretreatment device, the first conductivity determinator is used for determining the liquid inlet conductivity of the first reverse osmosis device, and the second conductivity determinator is used for determining the conductivity of filtered water output by the first reverse osmosis device; and the third conductivity tester is used for testing the conductivity of the filtered water of the second reverse osmosis device. And the recycling equipment is beneficial to closed-loop recovery of salt and water in the rinsing liquid so as to reduce the production cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electroplating liquid recycling processing, and specifically relates to a recycling equipment. BACKGROUND

[0002] The rinsing water of the electroplated part contains a large amount of electroplating salt, and the electroplating salt contains metal ions such as nickel ions. Direct discharge of the rinsing water will cause environmental pollution and is not conducive to recycling of water and electroplating salt, resulting in waste of resources. SUMMARY

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a recycling equipment, and the communication of the recycling equipment is beneficial to the closed-loop recycling of the salt and water in the washing liquid generated by rinsing the electroplated part, thereby reducing the production cost.

[0004] To solve the above problems, the technical scheme adopted by the utility model is as follows:

[0005] A recycling equipment, comprising water washing device, recovery device, pretreatment device, first reverse osmosis device, water production device and second reverse osmosis device connected in sequence, the water washing device is used for washing electroplated parts, the first reverse osmosis device has a first concentrated salt water outlet and a first pure water outlet, the first concentrated salt water outlet is connected to the pretreatment device and the management tank through a first three-way valve, so that the concentrated salt that does not reach the first target conductivity can flow back to the pretreatment device, and the concentrated salt that reaches the first target conductivity can be output to the management tank, the water production device is connected to the first pure water outlet for storing the filtered water flowing out, the water production device is provided with a first water inlet for introducing pure water, the second reverse osmosis device has a second pure water outlet and a second concentrated salt water outlet, the second pure water outlet is connected to the water production device and the water washing device through a second three-way valve, so that the filtered water that does not reach the second target conductivity flows back to the water production device, and the filtered water that reaches the second target conductivity flows back to the water washing device, and the second concentrated salt water outlet is connected to the pretreatment device to flow back the concentrated salt after the filtered water is discharged.

[0006] The recycling equipment further comprises a first conductivity meter, a second conductivity meter and a third conductivity meter, the first conductivity meter is used to measure the conductivity of the liquid inlet of the first reverse osmosis device, the second conductivity meter is used to measure the conductivity of the filtered water output by the first reverse osmosis device, and the third conductivity meter is used to measure the conductivity of the filtered water of the second reverse osmosis device.

[0007] In some possible embodiments, a filter is further arranged between the liquid outlet of the recovery device and the liquid inlet of the pretreatment device, and the filter is used to filter solid impurities.

[0008] In some possible implementations, the water production device is provided with a first cleaning port for introducing cleaning liquid, the second purified water outlet is connected to the pretreatment device and the second three-way valve port of the water production device through a third three-way valve, the third three-way valve is connected between the second concentrated salt outlet and the pretreatment device, the ports of the third three-way valve and the second three-way valve are connected to a fourth three-way valve, one outlet of the fourth three-way valve is connected to the water production device, and the other outlet is connected to a waste liquid discharge.

[0009] In some possible implementations, the pretreatment device is provided with a second cleaning port for introducing cleaning liquid, the pretreatment device is further provided with a second water inlet for introducing purified water, the first purified water outlet is connected to the pretreatment device and the first three-way valve port of the water production device through a fifth three-way valve, the fifth three-way valve is connected between the first purified water outlet and the water production device, the ports of the fifth three-way valve and the first three-way valve are connected to a sixth three-way valve, one outlet of the sixth three-way valve is connected to the pretreatment device, and the other outlet is connected to a waste liquid discharge.

[0010] In some possible implementations, the number of the first reverse osmosis devices is at least two, the at least two first reverse osmosis devices are connected in parallel, so that the liquid flowing out of the pretreatment device can be divided into the at least two first reverse osmosis devices, and the liquids flowing out of the at least two first reverse osmosis devices can be combined.

[0011] In some possible implementations, the number of the second reverse osmosis devices is at least two, the at least two second reverse osmosis devices are connected in parallel, so that the liquid flowing out of the water production device can be divided into the at least two second reverse osmosis devices, and the liquids flowing out of the at least two second reverse osmosis devices can be combined.

[0012] In some possible implementations, further comprising:

[0013] a first water inlet valve for controlling whether the first water inlet is water-connected or not; and

[0014] a second water inlet valve for controlling whether the second water inlet is water-connected or not.

[0015] In some possible implementations, further comprising:

[0016] a first flow meter for measuring the flow of the concentrated salt flowing back into the pretreatment device;

[0017] a second flow meter for measuring the flow of the purified water entering the water production device; and

[0018] A third flow meter is arranged to measure the flow rate of the second purified water outlet backflow to the water washing device.

[0019] In some possible embodiments, the application further comprises:

[0020] A first delivery pump is arranged between the recovery device and the filter, and is used to pump liquid into the filter;

[0021] A second delivery pump is arranged between the pretreatment device and the liquid inlet of the first reverse osmosis device, and is used to pump the liquid outlet of the pretreatment device into the first reverse osmosis device; and

[0022] A third delivery pump is arranged between the liquid outlet of the water production device and the liquid inlet of the second reverse osmosis device, and is used to pump the liquid outlet of the water production device into the second reverse osmosis device.

[0023] In some possible embodiments, the application further comprises:

[0024] A cleaning liquid dosing machine is arranged to deliver cleaning liquid to the first cleaning port and the second cleaning port.

[0025] Compared with the prior art, the application has the following beneficial effects:

[0026] In the application, the communication relationship between the water washing device, the recovery device, the pretreatment device, the first reverse osmosis device, the water production device and the second reverse osmosis device enables the salt and water in the water washing liquid produced by rinsing the electroplated parts to be recycled in a closed loop, thereby reducing the production cost. In addition, the arrangement of the multiple conductivity meters facilitates the determination of the filtration condition of the salt, and the arrangement of the first three-way valve and the second three-way valve facilitates the adjustment of the backflow direction of the backflow liquid according to the filtration condition. In addition, the cooperation of the first reverse osmosis device and the second reverse osmosis device facilitates the improvement of the separation effect of the salt and water.

[0027] The application will be further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The accompanying drawings show the communication schematic diagram of the recycling equipment provided in the application.

[0029] DETAILED DESCRIPTION

[0030] 10 - water washing device; 20 - recovery device; 23 - filter; 230 - first delivery pump; 30 - pretreatment device; 31 - second water inlet valve; 301 - second water inlet; 302 - second cleaning port; 34 - second delivery pump; 40 - first reverse osmosis device; 41 - first three-way valve; 401 - first concentrated salt outlet; 402 - first clean water outlet; 42 - sixth three-way valve; 43 - fifth three-way valve; 50 - water production device; 501 - first water inlet; 502 - first cleaning port; 51 - first water inlet valve; 56 - third delivery pump; 60 - second reverse osmosis device; 601 - second clean water outlet; 602 - second concentrated salt outlet; 61 - second three-way valve; 62 - third three-way valve; 63 - fourth three-way valve; 70 - management tank; 80 - cleaning liquid dosing machine; 340 - first conductivity meter; 420 - second conductivity meter; 610 - third conductivity meter. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort fall within the scope of protection of the present application.

[0032] The terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a middle element. When an element is referred to as "provided on" another element, it can be provided on the other element or there can be a middle element.

[0033] REFERENCE Figure 1 An embodiment of the present application provides a recycling device, which can be used for recycling and processing rinsing liquid of electroplated parts. The recycling device comprises a water washing device 10, a recovery device 20, a pretreatment device 30, a first reverse osmosis device 40, a water production device 50 and a second reverse osmosis device 60 connected in sequence. That is, the liquid inlet of the recovery device 20 is communicated with the liquid outlet of the water washing device 10 for containing the outflowing water washing liquid, the liquid inlet of the pretreatment device 30 is communicated with the liquid outlet of the recovery device 20 for containing the outflowing recovery liquid, the liquid inlet of the first reverse osmosis device 40 is communicated with the liquid outlet of the pretreatment device 30, and the liquid inlet of the second reverse osmosis device 60 is communicated with the liquid outlet of the water production device 50.

[0034] The water washing device 10 is used for washing electroplated parts. The first reverse osmosis device 40 has a first concentrated salt outlet 401 and a first purified water outlet 402. The first concentrated salt outlet 401 is connected to the pretreatment device 30 and the management tank 70 through the first three-way valve 41, so that the concentrated salt that does not reach the first target conductivity can be returned to the pretreatment device 30, and the concentrated salt that reaches the first target conductivity can be output to the management tank 70. The concentrated salt in the management tank 70 can be concentrated by other equipment and then recycled as electroplating solution. The water production device 50 is connected to the first purified water outlet 402 for storing the filtered water flowing out. The water production device 50 is provided with a first water inlet 501 for introducing pure water. The second reverse osmosis device 60 has a second purified water outlet 601 and a second concentrated salt outlet 602. The second purified water outlet 601 is connected to the water production device 50 and the water washing device 10 through the second three-way valve 61, so that the filtered water that does not reach the second target conductivity is returned to the water production device 50, and the filtered water that reaches the second target conductivity is returned to the water washing device 10. The second concentrated salt outlet 602 is connected to the pretreatment device 30 to return the concentrated salt after the filtered water is discharged. The recycling equipment further includes a first conductivity meter 340, a second conductivity meter 420 and a third conductivity meter 610. The first conductivity meter 340 is used to measure the conductivity of the liquid entering the first reverse osmosis device 40. For example, the first conductivity meter 340 can be arranged at the liquid inlet of the first reverse osmosis device 40 or at the connecting water pipe adjacent to the pretreatment device 30. The second conductivity meter 420 is used to measure the conductivity of the filtered water output by the first reverse osmosis device 40. For example, the second conductivity meter 420 can be arranged at the connecting water pipe adjacent to the first purified water outlet 402. The third conductivity meter 610 is used to measure the conductivity of the filtered water of the second reverse osmosis device 60. For example, the third conductivity meter 610 can be arranged at the second purified water outlet 601 or at the water pipe between the second three-way valve 61 and the second purified water outlet 601. For example, the measured value of the third conductivity meter 610 is less than 10 μs / cm, at which time the salt ion concentration is very low, close to pure water.

[0035] For example, any one of the water washing device 10, the recycling device 20, the pretreatment device 30 and the water production device 50 can be a box or a tank. The structures of the first reverse osmosis device 40 and the second reverse osmosis device 60 can be the existing structures on the market, and thus the internal structures of the first reverse osmosis device 40 and the second reverse osmosis device 60 are not described herein. The connection between the structures can be achieved by water pipes (the connection lines between the structures shown in the figure are water pipes).

[0036] When the recycling device is in operation, the electroplated parts are rinsed in the water washing device 10, the electroplated liquid carried by the electroplated parts is dissolved in the water washing liquid, and then the water washing liquid of the water washing device 10 flows into the recycling device 20, and then flows into the pretreatment device 30. The liquid of the pretreatment device 30 flows into the first reverse osmosis device 40 for filtration. The filtered water flows into the water production device 50 from the first filtered water outlet 402 for filtration by the next reverse osmosis device. After the water washing liquid is filtered by the first reverse osmosis device 40, the salt concentration in the filtered water is reduced. The enriched concentrated salt flows out from the first concentrated salt outlet 401. If the conductivity of the enriched concentrated salt reaches the first target conductivity, it means that the enriched concentrated salt reaches the recycling standard. At this time, the first three-way valve 41 is opened to the opening of the management tank 70. The enriched liquid in the management tank 70 can be concentrated again by external equipment to be used as electroplating liquid. The concentrated salt that does not reach the first target conductivity flows to the pretreatment device 30 through the opening of the first three-way valve 41 to the pretreatment device 30, so as to perform the next round of filtration operation to further improve the concentration of the concentrated salt and the corresponding conductivity. The filtered water flowing into the water production device 50 still contains a small amount of salt ions. In order to further enrich the salt ions, the liquid in the water production device 50 flows into the second reverse osmosis device 60 for the next step of filtration. After the filtered water of the second reverse osmosis device 60 reaches the second target conductivity, it is returned to the water washing device 10 as subsequent washing water. The filtered water that does not reach the second target conductivity still contains a certain concentration of salt ions, which is returned to the water production device 50 and then filtered by the second reverse osmosis device 60 until the conductivity of the filtered water reaches the second target conductivity. When the filtered water is discharged from the second reverse osmosis device 60, it means that the concentration of the concentrated salt also reaches the recycling standard. At this time, the concentrated salt is returned to the pretreatment device 30 from the second concentrated salt outlet 602 for subsequent further filtration and concentration. In addition, when the first reverse osmosis device 40 discharges the concentrated salt to the management tank 70, in order to maintain the water level of the system, pure water can be introduced from the first water inlet 501.

[0037] In the present application, through the communication relationship among the water washing device 10, the recycling device 20, the pretreatment device 30, the first reverse osmosis device 40, the water production device 50 and the second reverse osmosis device 60, the salt and water in the water washing liquid generated by rinsing the electroplated parts can be recycled in a closed loop, thereby reducing the production cost. In addition, the arrangement of multiple conductivity meters facilitates the determination of the filtration condition of the salt. The arrangement of the first three-way valve 41 and the second three-way valve 61 facilitates the adjustment of the return direction of the return liquid according to the filtration condition. In addition, the cooperation of the first reverse osmosis device 40 and the second reverse osmosis device 60 facilitates the improvement of the separation effect of the salt and water.

[0038] In some embodiments, the recycling device further comprises a filter 23, which can be a security filter for example. The filter 23 is arranged between the liquid outlet of the recycling device 20 and the liquid inlet of the pretreatment device 30, and is used to filter solid impurities, so as to avoid the influence of the solid impurities on the filtering effect of the reverse osmosis device and to remove the impurities in the backflow liquid.

[0039] In some embodiments, the water production device 50 is provided with a first cleaning port 502 for feeding cleaning liquid, and the number of the first cleaning ports 502 can be two, and different first cleaning ports 502 can be used to feed different kinds of cleaning liquid, for example, one first cleaning port 502 can be used to feed acid, and the other first cleaning port 502 can be used to feed alkali. It can be understood that the number of the first cleaning ports 502 can also be more than one or one. The second clean water outlet 601 is connected to the pretreatment device 30 and the second three-way valve 61 through the third three-way valve 62, and the third three-way valve 62 is connected between the second concentrated salt outlet 602 and the pretreatment device 30. The outlet of the fourth three-way valve 63 is connected to the water production device 50, and the other outlet is connected to a waste liquid discharge, and the waste liquid discharge can be provided with a waste liquid containing device to contain waste liquid.

[0040] In some embodiments, the pretreatment device 30 is provided with a second cleaning port 302 for feeding cleaning liquid, and is further provided with a second water inlet 301 for feeding pure water. The first clean water outlet 402 is connected to the water production device 50 and the pretreatment device 30 through the fifth three-way valve 43. The fifth three-way valve 43 is connected between the first clean water outlet 402 and the water production device 50. The outlet of the sixth three-way valve 42 is connected to the pretreatment device 30, and the other outlet is connected to a waste liquid discharge. The sixth three-way valve 42 and the fourth three-way valve 63 can be connected to different waste liquid discharges or the same waste liquid discharge. A waste liquid containing device can be provided at the waste liquid discharge to contain waste liquid.

[0041] It can be understood that the number of the second cleaning ports 302 can be one or at least two (two second cleaning ports 302 are shown in the figure, one second cleaning port 302 can be used to feed alkali, and the other second cleaning port 302 can be used to feed acid).

[0042] In some embodiments, the number of the first reverse osmosis devices 40 is at least two (two first reverse osmosis devices 40 are shown in the figure), and the at least two first reverse osmosis devices 40 are connected in parallel, so that the liquid flowing out of the pretreatment device 30 can be divided into the at least two first reverse osmosis devices 40, and the liquids flowing out of the at least two first reverse osmosis devices 40 can be combined.

[0043] In some embodiments, the number of the second reverse osmosis devices 60 is at least two, and the at least two second reverse osmosis devices 60 are connected in parallel, so that the liquid flowing out of the water production device 50 can be divided into the at least two second reverse osmosis devices 60, and the liquids flowing out of the at least two second reverse osmosis devices 60 can be combined. The parallel connection of the first reverse osmosis devices 40 and the second reverse osmosis devices 60 can improve the filtration efficiency.

[0044] In some embodiments, the reuse device further comprises a first water inlet valve 51 and a second water inlet valve 31. The first water inlet valve 51 is used to control whether the first water inlet 501 is water-conducting or not. It can be understood that the first water inlet valve 51 can be installed on the first water inlet 501 or on a water pipe connected with the first water inlet 501. The second water inlet valve 31 is used to control whether the second water inlet 301 is water-conducting or not. Similarly, the second water inlet valve 31 can be installed on the second water inlet 301 or on a water pipe connected with the second water inlet 301. The water inlet valve is used to control the water inlet, which is convenient for operation.

[0045] In some embodiments, the reuse device further comprises a first flow meter, a second flow meter and a third flow meter. The first flow meter is used to measure the flow of the concentrated salt flowing back into the pretreatment device 30. Exemplarily, the first flow meter, the second flow meter and the third flow meter can all be Hall flow meters. Exemplarily, the first flow meter can be arranged on a water pipe for conveying the backflow liquid into the pretreatment device 30 or arranged on a backflow liquid inlet of the pretreatment device 30. The second flow meter is used to measure the flow of the pure water entering the water production device 50. Exemplarily, the second flow meter can be arranged on the first water inlet 501 or arranged on a water pipe connected with the first water inlet 501. The third flow meter is used to measure the flow of the second pure water outlet 601 flowing back to the water washing device 10. Exemplarily, the third flow meter can be arranged on a backflow water pipe flowing back to the water washing device 10 or arranged on a backflow liquid inlet of the water washing device 10. The flow meter is convenient for quantitatively maintaining the balance of liquid input and output.

[0046] In some embodiments, the reuse device further comprises a first delivery pump 230, a second delivery pump 34 and a third delivery pump 56. The first delivery pump 230 is disposed between the recovery device 20 and the filter 23, and is used to pump the liquid into the filter 23. The second delivery pump 34 is disposed between the pretreatment device 30 and the liquid inlet of the first reverse osmosis device 40, and is used to pump the liquid out of the pretreatment device 30 into the first reverse osmosis device 40. The third delivery pump 56 is disposed between the liquid outlet of the water production device 50 and the liquid inlet of the second reverse osmosis device 60, and is used to pump the liquid out of the water production device 50 into the second reverse osmosis device 60. The delivery pumps are provided to facilitate the liquid flow.

[0047] In some embodiments, the reuse device further comprises a cleaning liquid dosing machine 80, which is used to deliver cleaning liquid to the first cleaning port 502 and the second cleaning port 302. For example, the number of cleaning liquid dosing machines 80 can be two, one of which is an alkaline cleaning liquid dosing machine, and the other of which is an acid cleaning liquid dosing machine.

[0048] The above embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by those skilled in the art based on the present application are within the scope of protection of the present application.

Claims

1. A recycling apparatus, characterized by, The device comprises sequentially connected water washing device, recovery device, pretreatment device, first reverse osmosis device, water production device and second reverse osmosis device, the water washing device is used for washing electroplated parts, the first reverse osmosis device has first concentrated salt outlet and first pure water outlet, the first concentrated salt outlet is connected with the pretreatment device and management tank through the first three-way valve, so that the concentrated salt not reaching the first target conductivity can be returned to the pretreatment device, the concentrated salt reaching the first target conductivity can be output to the management tank, the water production device is connected with the first pure water outlet for storing the filtered water, the water production device is provided with first water inlet for pure water, the second reverse osmosis device has second pure water outlet and second concentrated salt outlet, the second pure water outlet is connected with the water production device and the water washing device through the second three-way valve, so that the filtered water not reaching the second target conductivity is returned to the water production device, the filtered water reaching the second target conductivity is returned to the water washing device, the second concentrated salt outlet is connected with the pretreatment device to return the concentrated salt after the filtered water is discharged. The recycling device further comprises first conductivity meter, second conductivity meter and third conductivity meter, the first conductivity meter is used for measuring the conductivity of the liquid into the first reverse osmosis device, the second conductivity meter is used for measuring the conductivity of the filtered water output by the first reverse osmosis device, and the third conductivity meter is used for measuring the conductivity of the filtered water of the second reverse osmosis device.

2. The recycling plant of claim 1, wherein The filter is further arranged between the liquid outlet of the recovery device and the liquid inlet of the pretreatment device, and the filter is used for filtering solid impurities.

3. The recycling plant according to claim 1 or 2, characterized in that The water production device is provided with first cleaning port for cleaning liquid, the second pure water outlet is connected with the pretreatment device and the port of the second three-way valve leading to the water production device through the third three-way valve, the third three-way valve is connected between the second concentrated salt outlet and the pretreatment device, the ports connected with the second three-way valve of the third three-way valve are connected with the fourth three-way valve, one outlet of the fourth three-way valve is connected with the water production device, and the other outlet leads to waste liquid discharge.

4. The recycling plant of claim 3, wherein The pretreatment device is provided with second cleaning port for cleaning liquid, and is further provided with second water inlet for pure water, the first pure water outlet is connected with the water production device and the port of the first three-way valve leading to the pretreatment device through the fifth three-way valve, the fifth three-way valve is connected between the first pure water outlet and the water production device, the ports connected with the first three-way valve of the fifth three-way valve are connected with the sixth three-way valve, one outlet of the sixth three-way valve is connected with the pretreatment device, and the other outlet leads to waste liquid discharge.

5. The recycling plant of claim 1, wherein The number of the first reverse osmosis devices is at least two, and the at least two first reverse osmosis devices are connected in parallel, so that the liquid discharged from the pretreatment device can be divided into the at least two first reverse osmosis devices, and the liquids discharged from the at least two first reverse osmosis devices can be combined.

6. The recycling plant of claim 5, wherein The number of the second reverse osmosis devices is at least two, and the at least two second reverse osmosis devices are connected in parallel, so that the liquid flowing out of the water production device can be distributed into the at least two second reverse osmosis devices, and the effluent of the at least two second reverse osmosis devices can be converged.

7. The recycling plant of claim 4, wherein Further comprising: a first water inlet valve for controlling whether the first water inlet is water-passing or not; and a second water inlet valve for controlling whether the second water inlet is water-passing or not.

8. The recycling plant of claim 1, wherein Further comprising: a first flow meter for measuring the flow of the concentrated salt flowing back into the pretreatment device; a second flow meter for measuring the flow of the pure water entering the water production device; and a third flow meter for measuring the flow of the second pure water outlet flowing back to the water washing device.

9. The recycling plant of claim 2, wherein Further comprising: a first delivery pump arranged between the recovery device and the filter, the first delivery pump being used for pumping the liquid into the filter; a second delivery pump arranged between the pretreatment device and the liquid inlet of the first reverse osmosis device, the second delivery pump being used for pumping the effluent of the pretreatment device into the first reverse osmosis device; and a third delivery pump arranged between the liquid outlet of the water production device and the liquid inlet of the second reverse osmosis device, the third delivery pump being used for pumping the effluent of the water production device into the second reverse osmosis device.

10. The recycling plant of claim 4, wherein Further comprising: a cleaning liquid dosing machine for delivering cleaning liquid to the first cleaning port and the second cleaning port.

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