A method and device for recycling spray wastewater in vacuum infiltration process

Abstract

The invention discloses a method and device for recycling spray wastewater in a vacuum impregnation process, belonging to the technical field of wastewater treatment. The recycling process comprises the following steps S1: performing a first spray cleaning and a second spray cleaning on a workpiece after impregnation treatment, the wastewater after the first spray cleaning enters a wastewater treatment pool, and the wastewater after the second spray cleaning is used for the first spray cleaning; S2: the wastewater collected by a storage chamber in the wastewater treatment pool is transferred one by one to a plurality of treatment chambers, and the plurality of treatment chambers heat the wastewater and keep it at a constant temperature; S3: recycling the wastewater after stratification in the treatment chamber in turn; S4: repeating the wastewater recycling process; the device for recycling by adopting the above recycling method comprises a manipulator, a first cleaning tank, a second cleaning tank, a wastewater treatment pool, a mixing box and a filter box, and the purpose of reducing the waste of organic impregnation agent and water resources is achieved by the above manner.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a method and device for recycling spray wastewater in a vacuum infiltration process. Background Art

[0002] The impregnation equipment is a special equipment for impregnating machined parts of aluminum, magnesium alloy die castings, gray cast iron and other related materials. The workpiece is impregnated with an organic impregnant, which is infiltrated into the holes of the workpiece by a combination of vacuum extraction and pressurization. The impregnant in the pores is then heated to induce a polymerization reaction, forming a stable solid substance to fill the pores, thereby achieving a sealing effect. The impregnated product not only has sealing properties, but also improves corrosion resistance and cutting performance, and enhances thin-wall physical strength.

[0003] Generally speaking, the main process flow of vacuum impregnation includes impregnation-spinning-cleaning one-cleaning two-thermal curing. After the impregnation and spinning treatments, some impregnants are still attached to the surface of the workpiece, so it is necessary to go through the cleaning one and cleaning two processes. The cleaning one process cleans most of the organic impregnants attached to the workpiece, and the cleaning two uses higher purity cleaning water to clean the remaining organic impregnants on the workpiece. Since the purity requirement of the cleaning water in the cleaning one process is relatively low, and the cleaning water after the cleaning two contains limited organic impregnants, in order to reduce water resources In order to avoid waste, the post-cleaning wastewater of cleaning 2 is usually used in the cleaning process of cleaning 1. Although the post-cleaning wastewater of cleaning 2 will be reused in cleaning 1, the use of higher purity cleaning water of cleaning 2 and the treatment of post-cleaning wastewater of cleaning 1 in this process still result in a large waste of water resources. Furthermore, the role of the organic impregnating agent in the infiltration treatment process is mainly physical, and its properties have not changed. The washed organic impregnating agent still has value for reuse. Therefore, it is urgent to design a method and device for recovering and treating spray wastewater in a vacuum impregnation process in order to solve the above problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is: since the organic impregnating agent used in the infiltration process can be separated from water after being heated, kept warm and left to stand for more than four hours, the waste water can be recycled during working hours, and the waste water can be treated during the rest time after get off work. Then, the separated organic impregnating agent and water can be drained and utilized during the working time of the second day and reused in the infiltration process, so as to achieve the purpose of reducing the waste of organic impregnating agent and water resources under the condition of reasonable time planning.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a method for recycling and treating spray wastewater in a vacuum infiltration process, comprising the following steps:

[0006] S1: After the vacuum impregnation treatment in the impregnation treatment tank, the workpiece for vacuum impregnation is taken out by the manipulator and moved to the cleaning tank body for the first spray cleaning. The cleaning tank body is connected to a mixing box, and the mixing box is connected to a cleaning water pipeline. In the first working cycle, the first water for the first spray cleaning comes entirely from the city water. The cleaning tank body is also connected to a wastewater treatment tank. The wastewater generated after the first spray cleaning enters the wastewater treatment tank. The workpiece after the first spray cleaning is transferred by the manipulator to the cleaning tank body for the second spray cleaning. The cleaning tank body is connected to a filter box, and the filter box is connected to a cleaning water pipeline. In the first working cycle, the water for the second spray cleaning comes from the city water. The cleaning tank body is connected to the mixing box, and the wastewater generated after the second spray cleaning enters the mixing box. The workpiece after the second spray cleaning is transferred by the manipulator to the next process. A top plate is arranged above the impregnation treatment tank, the cleaning tank body, the cleaning tank body, the wastewater generated after the second spray cleaning enters the mixing box. The manipulator is arranged on the top plate.

[0007] S2: In the first working cycle, the wastewater from the second spray cleaning is sent to the mixing box and mixed with the municipal water entering through the cleaning municipal water pipe, and then sent to the cleaning tank to perform the first spray cleaning on the workpiece. A storage chamber and a plurality of processing chambers are provided in the wastewater treatment pool. The storage chamber collects the wastewater from the first spray cleaning. When the wastewater in the storage chamber reaches a preset volume, the storage chamber transfers the preset volume of wastewater to one of the plurality of processing chambers. The storage chamber continues to collect wastewater. When the wastewater in the storage chamber reaches the preset volume again, the The storage chamber transfers the preset volume of wastewater to another one of the plurality of treatment chambers until the preset volume of wastewater is stored in the plurality of treatment chambers and the storage chamber is in an empty state, then the first municipal water pipe for cleaning and the second municipal water pipe for cleaning are closed, and the plurality of treatment chambers heat the wastewater and keep it at a constant temperature until all the plurality of treatment chambers are heated and kept at a constant temperature. After the heating and keeping of the treatment chambers, the wastewater in the treatment chambers is divided into an impregnant layer located at the upper layer, a water-impregnant mixed layer located at the middle layer, and a water layer located at the lower layer. At this time, the first working cycle ends and enters the second working cycle;

[0008] S3: The top plate is provided with a plurality of impregnating agent layer suction mechanisms and a plurality of water-impregnating agent mixed layer suction mechanisms corresponding to the plurality of treatment chambers one by one, and a water layer suction mechanism is provided in each of the plurality of treatment chambers. In the second working cycle, the impregnating agent layer, the water layer and the water-impregnating agent mixed layer in one of the treatment chambers are sucked and transported in sequence, the impregnating agent layer is sucked into the infiltration treatment tank by the impregnating agent layer suction mechanism, the water layer is sucked into the filter box by the water layer suction mechanism and transported to the second cleaning tank body, the water-impregnating agent mixed layer is transported to the mixing box by the water-impregnating agent mixed layer suction mechanism, and transported to the first cleaning tank body together with the waste water output from the second cleaning tank body entering the mixing box, until the corresponding treatment chamber is in a cavity state, so as to complete the suction process, the remaining treatment chambers perform the suction process one by one until the corresponding treatment chamber is in a cavity state, in the suction and transportation process of the water layer and the water-impregnating agent mixed layer During the process, the workpiece for vacuum impregnation is taken out by the robot after the vacuum impregnation treatment in the impregnation treatment tank and moved to the first cleaning tank body for the first spray cleaning. During the suction and transportation process of the water layer, the workpiece after the first spray cleaning is transferred by the robot to the second cleaning tank body for the second spray cleaning. The workpiece after the second spray cleaning is transferred by the robot to the next process. During the second working cycle, the waste water of the first spray cleaning enters the storage chamber until the waste water in the storage chamber reaches the preset volume. When the waste water in the storage chamber reaches the preset volume, the storage chamber transports the waste water to the processing chamber in the empty state in the order in which several processing chambers become the empty state, until several processing chambers have the preset volume of waste water and the storage chamber is in the empty state, and several processing chambers heat the waste water and keep it at a constant temperature until all several processing chambers are heated and kept at a constant temperature, and the second working cycle ends at this time.

[0009] S4: Repeat the working process in the second working cycle to achieve continuous recycling of the spray wastewater.

[0010] As a preferred technical solution of the present invention, the step S1 specifically includes the following steps:

[0011] S1.1: The impregnation treatment tank includes an impregnation tank body and an impregnation agent storage tank, the impregnation agent storage tank is connected to the impregnation tank body, the manipulator takes out the workpiece for vacuum impregnation from the impregnation tank body after vacuum impregnation treatment in the impregnation tank body and moves it to the cleaning tank body for the first spray cleaning, the cleaning tank body is connected to a mixing box conveying mechanism, the cleaning tank body is connected to the mixing box through the mixing box conveying mechanism, in the first working cycle, the first water used for the first spray cleaning is completely from the city water, the city water enters the cleaning tank body through the cleaning city water pipeline and the mixing box, the cleaning tank body is connected to a cleaning wastewater transmission mechanism, the cleaning tank body is connected to the wastewater treatment tank through the cleaning wastewater connection mechanism, and the wastewater generated after the first spray cleaning is sent to the wastewater treatment tank through the wastewater transmission mechanism;

[0012] S1.2: The manipulator transfers the workpiece after the first spray cleaning to the second cleaning tank for the second spray cleaning. The second cleaning tank is connected to a filter box transmission mechanism, and the second cleaning tank is connected to the filter box through the filter box transmission mechanism. During the first working cycle, the water used for the second spray cleaning comes from city water, and the city water enters the second cleaning tank through the second cleaning city water pipeline and the filter box. The second cleaning tank is connected to a second cleaning wastewater transmission mechanism, and the second cleaning tank is connected to the mixing box through the second cleaning wastewater transmission mechanism. The wastewater generated after the second spray cleaning is sent to the mixing box through the second cleaning wastewater transmission mechanism;

[0013] S1.3: The robot transfers the workpiece after the second spray cleaning to the next process.

[0014] As a preferred technical solution of the present invention, the step S2 specifically includes the following steps:

[0015] S2.1: In the first working cycle, the wastewater from the second spray cleaning is sent to the mixing tank through the second cleaning wastewater transmission mechanism, mixed with the municipal water entering through the first cleaning municipal water pipeline, and then transported to the first cleaning tank through the mixing tank transmission mechanism to perform the first spray cleaning;

[0016] S2.2: The wastewater from the first spray cleaning is sent to the storage chamber through a cleaning wastewater transmission mechanism and is collected by the storage chamber;

[0017] S2.3: The storage chamber is connected to the processing chamber through a shunt pump. When the wastewater collected in the storage chamber reaches a preset volume, the storage chamber transfers the preset volume of wastewater to the corresponding processing chamber through a shunt pump corresponding to one of the processing chambers. Then, the storage chamber continues to collect the wastewater from the first spray cleaning.

[0018] S2.4: When the wastewater in the storage chamber reaches the preset volume again, the storage chamber transfers the preset volume of wastewater to the corresponding treatment chamber through a diversion pump corresponding to another treatment chamber among the plurality of treatment chambers, until the plurality of treatment chambers all contain the preset volume of wastewater and the storage chamber is in an empty state;

[0019] S2.5: Close the cleaning of the first municipal water pipe and the cleaning of the second municipal water pipe;

[0020] S2.6: A heating and constant temperature mechanism is arranged inside the wall of the treatment chamber, and a cover plate is detachably installed on the treatment chamber. The cover plate is buckled on the treatment chamber, and the heating and constant temperature mechanism heats the wastewater in the treatment chamber and keeps it at a constant temperature until the wastewater in all the treatment chambers has completed the heating and constant temperature stillness. After the heating and constant temperature stillness of the treatment chamber, the wastewater in the treatment chamber is divided into an impregnant layer located in the upper layer, a water-impregnant mixed layer located in the middle layer and a water layer located in the lower layer. At this time, the first working cycle ends and enters the second working cycle.

[0021] As a preferred technical solution of the present invention, the step S3 specifically includes the following steps:

[0022] S3.1: In the second working cycle, the wastewater in the treatment chamber is layered into an impregnant layer, a water-impregnant mixed layer and a water layer. The cover plate is removed from the treatment chamber. A plurality of impregnant layer suction mechanisms corresponding to a plurality of treatment chambers are arranged on the top plate. The impregnant layer suction mechanism comprises an impregnant layer suction lifting cylinder. The impregnant layer suction lifting cylinder is arranged on the top plate. The output end of the impregnant layer suction lifting cylinder is connected to an impregnant layer suction pump. The input end of the impregnant layer suction pump is connected to an impregnant layer suction head. The output end of the impregnant layer suction pump is connected to an impregnant layer delivery pipe. , an impregnating agent layer valve is arranged on the impregnating agent layer delivery pipe, and a plurality of the impregnating agent layer delivery pipes are connected to the impregnating agent storage tank through the impregnating agent layer delivery main pipe, the impregnating agent layer suction lifting cylinder drives the impregnating agent layer suction head to move to the impregnating agent layer position in the corresponding processing chamber, and the impregnating agent layer is sucked by the impregnating agent layer suction pump, and is delivered to the impregnating agent storage tank through the impregnating agent layer delivery pipe and the impregnating agent layer delivery main pipe, and as the level of the impregnating agent layer in the corresponding processing chamber decreases, the impregnating agent layer suction lifting cylinder drives the impregnating agent layer suction head to move downward following the decrease of the level of the impregnating agent layer;

[0023] S3.2: The water layer suction mechanism includes a water layer suction pump, which is arranged on the processing chamber, the input end of the water layer suction pump is connected to a water layer suction head, the water layer suction head is located in the processing chamber, the output end of the water layer suction pump is connected to a water layer suction pipe, the water layer suction pipe is connected to a filter box, a filter mechanism is arranged in the filter box, the water layer suction pump sucks the water layer in the corresponding processing chamber through the water layer suction head, and transports it to the filter box through the water layer suction pipe, the sucked water layer is filtered under the action of the filter mechanism, and then the filtered water layer is transported to the second cleaning tank under the action of the filter box transmission mechanism;

[0024] S3.3: The top plate is provided with a plurality of water-impregnant mixed layer suction mechanisms corresponding to a plurality of treatment chambers one by one, the water-impregnant layer mixing mechanism comprises a water-impregnant mixed layer suction lifting cylinder, the water-impregnant mixed layer suction lifting cylinder is provided on the top plate, the output end of the water-impregnant mixed layer suction lifting cylinder is connected to a water-impregnant mixed layer suction pump, the input end of the water-impregnant mixed layer suction pump is connected to a water-impregnant mixed layer suction head, the output end of the water-impregnant mixed layer suction pump is connected to a water-impregnant mixed layer suction pipe, the water-impregnant mixed layer suction pipe is provided with a water-impregnant mixed layer suction valve, and the plurality of water- The impregnant mixed layer suction pipe is connected to the mixing box through the water-impregnant mixed layer suction main pipe, the water-impregnant mixed layer suction lifting cylinder drives the water-impregnant mixed layer suction head to move to the water-impregnant mixed layer position in the corresponding processing chamber, the water-impregnant mixed layer is sucked by the water-impregnant mixed layer suction pump, and transported to the mixing box through the water-impregnant mixed layer suction pipe and the water-impregnant mixed layer suction main pipe, and as the level of the water-impregnant mixed layer in the corresponding processing chamber decreases, the water-impregnant mixed layer suction lifting cylinder drives the water-impregnant mixed layer suction head to move downward following the degree of the decrease in the level of the water-impregnant mixed layer;

[0025] S3.4: A mixing mechanism is provided in the mixing box, and the wastewater in the second cleaning tank body transmitted by the second cleaning wastewater transmission mechanism is sent to the mixing box, and is mixed with the water-impregnating agent mixed layer entering through the water-impregnating agent mixed layer suction main pipe under the action of the mixing mechanism, and the mixed liquid is transmitted to the first cleaning tank body under the action of the mixing box transmission mechanism;

[0026] S3.5: The impregnant layer, the water layer and the water-impregnant mixed layer in one of the processing chambers are sequentially pumped and transported until the corresponding processing chamber is in an empty state, so as to complete the pumping process. The remaining processing chambers are subjected to the pumping process one by one until the corresponding processing chamber is in an empty state. During the pumping and transporting process of the water layer and the water-impregnant mixed layer, the workpiece for vacuum impregnation is taken out by a robot after vacuum impregnation treatment in the impregnation tank and moved to the first cleaning tank for the first spray cleaning. During the pumping and transporting process of the water layer, the workpiece after the first spray cleaning is transferred by the robot to the second cleaning tank for the second spray cleaning. After the second spray cleaning, the workpiece is transferred by the robot to the next process;

[0027] S3.6: In the second working cycle, the wastewater from the first spray cleaning is sent to the storage chamber through the cleaning first wastewater transmission mechanism until the wastewater in the storage chamber reaches the preset volume. When the wastewater in the storage chamber reaches the preset volume, the storage chamber transmits the wastewater to the processing chamber in the empty state in the order in which the several processing chambers become the empty state, until the several processing chambers have the preset volume of wastewater and the storage chamber is in the empty state;

[0028] S3.7: The cover plate is buckled onto the processing chamber, and the heating and constant temperature mechanism heats the wastewater in the processing chamber and keeps it at a constant temperature until the wastewater in all the processing chambers is heated and kept at a constant temperature, at which time the second working cycle ends.

[0029] As a preferred technical solution of the present invention, the step S1.1 specifically includes the following steps:

[0030] S1.1.1: The mixing box delivery mechanism includes a mixing box delivery pipe and a mixing box delivery pump. One end of the mixing box delivery pipe is connected to a cleaning tank body, and the other end of the mixing box delivery pipe is connected to a mixing box. The mixing box delivery pump is arranged on the mixing box delivery pipe. In the first working cycle, the first water used for the first spray cleaning comes entirely from municipal water. The municipal water enters the mixing box through the cleaning municipal water pipeline, and then the municipal water is delivered to the cleaning tank body under the action of the mixing box delivery pump.

[0031] As a preferred technical solution of the present invention, the step S1.2 specifically includes the following steps:

[0032] S1.2.1: The filter box transmission mechanism includes a filter box transmission pipe and a filter box transmission pump, one end of the filter box transmission pipe is connected to the second cleaning tank, and the other end of the filter box transmission pipe is connected to the filter box, and the filter box transmission pump is arranged on the filter box transmission pipe. In the first working cycle, the water for the second spray cleaning comes from the city water, and the city water enters the filter box through the second cleaning city water pipeline, and then the city water is sent to the second cleaning tank under the action of the filter box transmission pump;

[0033] S1.2.2: The second cleaning wastewater transmission mechanism includes a second cleaning wastewater transmission pipe and a second cleaning wastewater transmission pump. One end of the second cleaning wastewater transmission pipe is connected to the second cleaning tank body, and the other end of the second cleaning wastewater transmission pipe is connected to the mixing box. The second cleaning wastewater transmission pump is arranged on the second cleaning wastewater transmission pipe. Under the action of the second cleaning wastewater transmission pump, the wastewater generated after the second spray cleaning is sent to the mixing box through the second cleaning wastewater transmission pipe.

[0034] As a preferred technical solution of the present invention, the step S2.2 specifically includes the following steps:

[0035] S2.2.1: The cleaning wastewater transmission mechanism includes a cleaning wastewater transmission pipe and a cleaning wastewater transmission pump. One end of the cleaning wastewater transmission pipe is connected to a cleaning tank body, and the other end of the cleaning wastewater transmission pipe is connected to a storage chamber. The cleaning wastewater transmission pump is arranged on the cleaning wastewater transmission pipe. The wastewater from the first spray cleaning is sent into the storage chamber through the cleaning wastewater transmission pipe by the cleaning wastewater transmission pump and collected by the storage chamber.

[0036] As a preferred technical solution of the present invention, the step S3.2 specifically includes the following steps:

[0037] S3.2.1: The filtering mechanism includes a detachable filter screen. A filter cavity is opened in the filter box. The detachable filter screen is arranged in the filter cavity. The water layer suction pump sucks the water layer in the corresponding treatment cavity through the water layer suction head, and transports it to the filter box through the water layer suction pipe. The sucked water layer is filtered under the action of the detachable filter screen, and then the filtered water layer is transported to the second cleaning tank under the action of the filter box transmission mechanism.

[0038] As a preferred technical solution of the present invention, the step S3.4 specifically includes the following steps:

[0039] S3.4.1: The mixing mechanism includes a mixing motor, a mixing chamber is provided in the mixing box, the mixing motor is arranged in the mixing chamber, the output end of the mixing motor is connected to a mixing fan blade, the mixing motor drives the mixing fan blade to rotate, the wastewater in the second cleaning tank body transmitted by the second cleaning wastewater transmission mechanism is sent to the mixing box, and is mixed with the water-impregnant mixing layer entering through the water-impregnant mixing layer suction main pipe under the action of the rotating mixing blades, and the mixed liquid is transmitted to the first cleaning tank body under the action of the mixing box transmission mechanism.

[0040] A device for recycling and treating spray wastewater in the vacuum infiltration process using the recycling and treating method, comprising: a manipulator, a first cleaning tank, a second cleaning tank, a wastewater treatment tank, a mixing tank, and a filter tank;

[0041] A top plate is arranged above the first cleaning tank, the second cleaning tank and the wastewater treatment tank, and the manipulator is arranged on the top plate;

[0042] The first cleaning tank is connected to the wastewater treatment tank and the mixing box respectively, the mixing box is connected to the first cleaning water pipeline, the second cleaning tank is connected to the filter box, the filter box is connected to the second cleaning water pipeline, the second cleaning tank is connected to the mixing box, and the infiltration treatment tank is located on the side of the first cleaning tank and the second cleaning tank;

[0043] The wastewater treatment pool is provided with a storage chamber and a plurality of treatment chambers, the storage chambers are connected to the plurality of treatment chambers respectively, the top plate is provided with a plurality of impregnating agent layer suction mechanisms and a plurality of water-impregnating agent mixed layer suction mechanisms corresponding to the plurality of treatment chambers one by one, and a plurality of the treatment chambers are provided with a water layer suction mechanism;

[0044] The impregnation agent layer suction mechanism is communicated with the impregnation treatment tank, the water-impregnation agent mixed layer suction mechanism is communicated with the mixing box, and the water layer suction mechanism is communicated with the filter box.

[0045] The beneficial effects of the present invention are embodied in:

[0046] By setting up a wastewater treatment pool, the wastewater after spray cleaning can be collected. Then, during the rest time after get off work, the wastewater in the treatment chamber of the wastewater treatment pool is heated and kept at a constant temperature to form an impregnant layer at the top, a water-impregnant mixed layer in the middle and a water layer at the bottom. After entering the working hours, the impregnant layer, the water layer and the water-impregnant mixed layer are respectively sucked and transported to provide the impregnant, water for the second spray cleaning and water for the first spray cleaning after entering the working hours again. In the whole cycle, the discharge of wastewater and the waste of impregnant are reduced, thereby reducing material costs and achieving the purpose of energy conservation and emission reduction.

[0047] Since the water requirement for the first spray cleaning is different from that for the second spray cleaning, the waste water from the second spray cleaning is used for the first spray cleaning, thereby making effective use of water resources.

[0048] By providing a storage chamber and a plurality of treatment chambers, it is possible to reduce the floor space of the wastewater treatment pool while, on the one hand, smoothly utilizing the stratified impregnant layer, water layer, and water-impregnant mixed layer in the treatment chamber; on the other hand, by diverting the flow between the storage chamber and the plurality of treatment chambers, it is ensured that the storage chamber collects wastewater without affecting the liquid in the treatment chamber and the stratified liquids.

[0049] By setting up a mixing box, the water used for the first spray cleaning can be mixed, thereby ensuring that the water used for the first spray cleaning is in a uniformly mixed state, thereby ensuring the effect of the first spray cleaning.

[0050] By setting up a filter box, the water layer liquid entering the filter box is filtered so as to meet the water requirement for the second spray cleaning and ensure the effect of the second spray cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a top view schematic diagram of the present invention without components such as the top plate and the cover plate;

[0052] Figure 2 is a top view schematic diagram of the present invention;

[0053] Figure 3 It is a front view schematic diagram of the present invention;

[0054] Figure 4 It is a bottom view schematic diagram of the impregnant layer suction mechanism and the water-impregnant mixed layer suction mechanism on the top plate of the present invention;

[0055] Figure 5 It is a top view schematic diagram of the present invention without the top plate and other parts;

[0056] Figure 6 is a schematic diagram of the mixing box of the present invention;

[0057] Figure 7 It is a schematic diagram of the filter box of the present invention;

[0058] Figure 8 It is a top view schematic diagram of the mixing box and other parts of the present invention;

[0059] Fig. 9 It is a top view schematic diagram of the filter box and other parts of the present invention;

[0060] Fig.10 yes Figure 1 Enlarged schematic diagram of part A.

[0061] In the figure: 1. impregnation tank; 101. impregnation agent storage box; 102. impregnation agent injection pipe; 103. impregnation agent storage box discharge valve; 2. cleaning tank 1; 201. cleaning city water pipeline 1; 202. mixing box drain valve; 3. cleaning tank 2; 301. cleaning city water pipeline 2; 302. filter box drain valve; 4. wastewater treatment tank; 401. treatment chamber discharge valve; 5. storage chamber; 6. treatment chamber; 7. cleaning a wastewater transmission pipe; 8. cleaning a wastewater transmission pump; 9. diverter pump; 10. top plate; 11. water layer suction head; 12. water layer suction pump; 13. water layer suction pipe; 14. impregnation agent layer suction lifting cylinder; 15. impregnation agent layer suction pump; 16. impregnation agent layer suction head; 17. water-impregnation agent mixed layer suction lifting cylinder; 18. water-impregnation agent mixed layer suction pump; 1 9. Water-impregnant mixed layer suction head; 20. Impregnant layer delivery pipe; 21. Impregnant layer valve; 22. Impregnant layer delivery main pipe; 23. Water-impregnant mixed layer suction pipe; 24. Water-impregnant mixed layer suction valve; 25. Water-impregnant mixed layer suction main pipe; 26. Mixing box; 2601. Mixing chamber; 2602. Mixing motor; 2603. Mixing fan blade; 27. Filter box; 2701. Filter chamber; 2702. Removable filter screen; 28. Filter box transmission pipe; 2801. Filter box transmission pump; 29. ​​Cleaning second wastewater transmission pipe; 30. Cleaning second wastewater transmission pump; 31. Mixing box delivery pipe; 3101. Mixing box delivery pump; 32. Track; 33. Clamp; 34. Cover plate; 35. Heat source; 3501. Heating pipe; 36. Thermal curing tank body. DETAILED DESCRIPTION

[0062] The present invention will now be described in further detail with reference to the accompanying drawings.

[0063] Combined with Figure 1-10As shown, a method and device for recycling and treating spray wastewater in a vacuum impregnation process includes an impregnation tank body 1, an impregnating agent storage box 101, an impregnating agent injection pipe 102, an impregnating agent storage box discharge valve 103, a cleaning tank body 2, a cleaning city water pipeline 201, a mixing box drain valve 202, a cleaning tank body 3, a cleaning city water pipeline 301, a filter box drain valve 302, a wastewater treatment tank 4, a treatment chamber discharge valve 401, a storage chamber 5, a treatment chamber 6, a cleaning wastewater transmission pipe 7, a cleaning wastewater transmission pump 8, a diversion pump 9, a top plate 10, a water layer suction head 11, a water layer suction pump 12, a water layer suction pipe 13, an impregnating agent layer suction lifting cylinder 14, an impregnating agent layer suction pump 15, an impregnating agent layer suction head 16, a water-impregnating agent mixed layer suction lifting cylinder 17, and a water-impregnating agent mixed layer suction lifting cylinder 18. Impregnant mixed layer suction pump 18, water-impregnant mixed layer suction head 19, impregnant layer delivery pipe 20, impregnant layer valve 21, impregnant layer delivery main pipe 22, water-impregnant mixed layer suction pipe 23, water-impregnant mixed layer suction valve 24, water-impregnant mixed layer suction main pipe 25, mixing box 26, mixing chamber 2601, mixing motor 2602, mixing fan blades 2603, filter box 27, filter chamber 2701, detachable filter net 2702, filter box transmission pipe 28, filter box transmission pump 2801, cleaning second wastewater transmission pipe 29, cleaning second wastewater transmission pump 30, mixing box delivery pipe 31, mixing box delivery pump 3101, track 32, clamp 33, cover plate 34, heat source 35, heating pipe 3501 and thermal curing tank body 36.

[0064] Combined with Figure 1-10 As shown, a method for recycling and treating spray wastewater in a vacuum infiltration process comprises the following steps:

[0065] S1: After the vacuum impregnation treatment in the impregnation treatment tank, the workpiece for vacuum impregnation is taken out by the robot and moved to the cleaning tank body 2 for the first spray cleaning. The cleaning tank body 2 is connected to a mixing box 26, and the mixing box 26 is connected to a cleaning water pipe 201. In the first working cycle, the first water used for the first spray cleaning comes entirely from the city water. The cleaning tank body 2 is also connected to a wastewater treatment tank 4. The wastewater generated after the first spray cleaning enters the wastewater treatment tank 4. The workpiece after the first spray cleaning is transferred by the robot to the cleaning tank body 3 for the second spray cleaning. The cleaning tank body 3 is connected to a filter box 27, and the filter box 27 is connected to a cleaning water pipe 301. In the first working cycle, the first water used for the first spray cleaning is completely from the city water. The cleaning tank body 2 is also connected to a wastewater treatment tank 4. The wastewater generated after the first spray cleaning enters the wastewater treatment tank 4. The workpiece after the first spray cleaning is transferred by the robot to the cleaning tank body 3 for the second spray cleaning. The cleaning tank body 3 is connected to a filter box 27, and the filter box 27 is connected to a cleaning water pipe 301. The water for the secondary spray cleaning comes from the city water. The second cleaning tank body 3 is connected to the mixing box 26. The wastewater generated after the second spray cleaning enters the mixing box 26. The workpiece after the second spray cleaning is transferred to the next process by the manipulator. A top plate 10 is arranged above the impregnation treatment tank, the first cleaning tank body 2, the second cleaning tank body 3, and the wastewater treatment tank 4. The manipulator is arranged on the top plate 10, wherein the manipulator includes a track 32 and a clamping jaw 33 connected to the track 32. The next process is to perform heat curing treatment on the workpiece after the second spray cleaning with the help of a heat curing tank body 36. The heat curing tank body 36 is located on the side of the second cleaning tank body 3. The track 32 covers the impregnation treatment tank, the first cleaning tank body 2, the second cleaning tank body 3, and the heat curing tank body 36.

[0066] Specific:

[0067] S1.1: The impregnation treatment tank includes an impregnation tank body 1 and an impregnant storage box 101, wherein the impregnation treatment tank also includes a degumming tank body. After the workpiece passes through the impregnation tank body 1, it enters the degumming tank body for degumming, thereby completing the vacuum impregnation treatment process. The impregnant storage box 101 is also provided with an impregnant injection pipe 102 and an impregnant storage box discharge valve 103. The impregnant injection pipe 102 can be used to inject external impregnant according to the situation, and the impregnant storage box discharge valve 103 can be used to discharge excess impregnant from the impregnant storage box 101 according to the actual situation. The impregnant storage box 101 is connected to the impregnation tank body 1, and the manipulator passes through the vacuum in the impregnation tank body 1. After the impregnation treatment, the workpiece used for vacuum impregnation is taken out from the impregnation tank body 1 and moved to the cleaning tank body 2 for the first spray cleaning. The cleaning tank body 2 is connected to a mixing box conveying mechanism. The cleaning tank body 2 is connected to the mixing box 26 through the mixing box conveying mechanism. In the first working cycle, the first water used for the first spray cleaning comes entirely from city water. The city water enters the cleaning tank body 2 through the cleaning city water pipeline 201 and the mixing box 26. The cleaning tank body 2 is connected to a cleaning wastewater transmission mechanism. The cleaning tank body 2 is connected to the wastewater treatment tank 4 through the cleaning wastewater connection mechanism. The wastewater generated after the first spray cleaning is sent to the wastewater treatment tank 4 through the wastewater transmission mechanism;

[0068] Specific:

[0069] S1.1.1: The mixing box delivery mechanism includes a mixing box delivery pipe 31 and a mixing box delivery pump 3101. One end of the mixing box delivery pipe 31 is connected to the cleaning tank body 2, and the other end of the mixing box delivery pipe 31 is connected to the mixing box 26. The mixing box delivery pump 3101 is arranged on the mixing box delivery pipe 31. In the first working cycle, the first water used for the first spray cleaning is completely from the city water. The city water enters the mixing box 26 through the cleaning city water pipeline 201. Then, the city water is delivered to the cleaning tank body 2 under the action of the mixing box delivery pump 3101. The mixing box 26 is also provided with a mixing box drain valve 202, through which the liquid in the mixing box 26 can be discharged according to the actual working conditions;

[0070] S1.2: The manipulator transfers the workpiece after the first spray cleaning to the second cleaning tank 3 for the second spray cleaning. The second cleaning tank 3 is connected to a filter box transmission mechanism, and the second cleaning tank 3 is connected to the filter box 27 through the filter box transmission mechanism. In the first working cycle, the water for the second spray cleaning comes from city water, and the city water enters the second cleaning tank 3 through the second cleaning city water pipeline 301 and the filter box 27. The second cleaning tank 3 is connected to a second cleaning wastewater transmission mechanism, and the second cleaning tank 3 is connected to the mixing box 26 through the second cleaning wastewater transmission mechanism. The wastewater generated after the second spray cleaning is sent to the mixing box 26 through the second cleaning wastewater transmission mechanism. For the first spray cleaning, except for the first time water completely relying on city water, the water for the first spray cleaning in the remaining time period is used by the wastewater entering the mixing box 26 after the second spray cleaning, or by the liquid mixed with the wastewater entering the mixing box 26 for the second spray cleaning. The specific situation is adjusted according to the actual process requirements, etc.;

[0071] Specific:

[0072] S1.2.1: The filter box transmission mechanism includes a filter box transmission pipe 28 and a filter box transmission pump 2801. One end of the filter box transmission pipe 28 is connected to the second cleaning tank body 3, and the other end of the filter box transmission pipe 28 is connected to the filter box 27. The filter box transmission pump 2801 is arranged on the filter box transmission pipe 28. In the first working cycle, the water used for the second spray cleaning comes from the city water. The city water enters the filter box 27 through the second cleaning city water pipeline 301. Then, the city water is sent to the second cleaning tank body 3 under the action of the filter box transmission pump 2801. The filter box 27 is also provided with a filter box drain valve 302. The filter box drain valve 302 can discharge the excess liquid in the filter box 27 according to the actual working conditions;

[0073] S1.2.2: The second cleaning wastewater transmission mechanism includes a second cleaning wastewater transmission pipe 29 and a second cleaning wastewater transmission pump 30. One end of the second cleaning wastewater transmission pipe 29 is connected to the second cleaning tank 3, and the other end of the second cleaning wastewater transmission pipe 29 is connected to the mixing box 26. The second cleaning wastewater transmission pump 30 is arranged on the second cleaning wastewater transmission pipe 29. Under the action of the second cleaning wastewater transmission pump 30, the wastewater generated after the second spray cleaning is sent to the mixing box 26 through the second cleaning wastewater transmission pipe 29;

[0074] S1.3: The manipulator transfers the workpiece after the second spray cleaning to the next process, wherein the next process is to perform a heat curing treatment on the workpiece after the second spray cleaning by means of a heat curing tank 36;

[0075] S2: In the first working cycle, the wastewater from the second spray cleaning is sent to the mixing box 26 and mixed with the municipal water entering through the cleaning municipal water pipe 201, and then sent to the cleaning tank 2 to perform the first spray cleaning on the workpiece. The wastewater treatment pool 4 is provided with a storage chamber 5 and a plurality of treatment chambers 6, wherein the volume of the storage chamber 5 is greater than or equal to the volume of the treatment chamber 6, and the storage chamber 5 collects the wastewater from the first spray cleaning. When the wastewater in the storage chamber 5 reaches the preset volume, the storage chamber 5 transfers the preset volume of wastewater to one of the plurality of treatment chambers 6, and the storage chamber 5 continues to collect wastewater. When the wastewater in the storage chamber 5 reaches the preset volume again, the storage chamber 5 transfers the preset volume of wastewater to another one of the plurality of treatment chambers 6, until the plurality of treatment chambers 6 are filled. The treatment chambers 6 all contain a preset volume of wastewater and the storage chamber 5 is in an empty state. At this time, the vacuum infiltration treatment is completed, the first spray cleaning and the second spray cleaning are stopped, and then the cleaning first municipal water pipe 201 and the cleaning second municipal water pipe 301 are closed. Several of the treatment chambers 6 heat the wastewater at a constant temperature and let it stand until all of the several treatment chambers 6 are heated and kept at a constant temperature and allowed to stand. After the heating and constant temperature standing of the treatment chambers 6, the wastewater in the treatment chambers 6 is divided into an impregnant layer located at the upper layer, a water-impregnant mixed layer located at the middle layer, and a water layer located at the lower layer. At this time, the first working cycle ends and enters the second working cycle. The wastewater treatment tank 4 is provided with a treatment chamber discharge valve 401 connected to the treatment chamber 6, and the treatment chamber discharge valve 401 can be used to clear and discharge the liquid in the treatment chamber 6 according to the specific process;

[0076] Specific:

[0077] S2.1: In the first working cycle, the wastewater from the second spray cleaning is sent to the mixing box 26 through the second cleaning wastewater transmission mechanism, mixed with the municipal water entering through the first cleaning municipal water pipeline 201, and then transported to the first cleaning tank 2 through the mixing box transmission mechanism to perform the first spray cleaning;

[0078] S2.2: The wastewater from the first spray cleaning is sent to the storage chamber 5 through a cleaning wastewater transmission mechanism and is collected by the storage chamber 5;

[0079] Specific:

[0080] S2.2.1: The cleaning wastewater transmission mechanism includes a cleaning wastewater transmission pipe 7 and a cleaning wastewater transmission pump 8. One end of the cleaning wastewater transmission pipe 7 is connected to the cleaning tank 2, and the other end of the cleaning wastewater transmission pipe 7 is connected to the storage chamber 5. The cleaning wastewater transmission pump 8 is arranged on the cleaning wastewater transmission pipe 7. The wastewater of the first spray cleaning is sent to the storage chamber 5 through the cleaning wastewater transmission pipe 7 by the cleaning wastewater transmission pump 8 and collected by the storage chamber 5.

[0081] S2.3: The storage chamber 5 is connected to the processing chamber 6 through the shunt pump 9. When the wastewater collected in the storage chamber 5 reaches a preset volume, the storage chamber 5 transfers the preset volume of wastewater to the corresponding processing chamber 6 through the shunt pump 9 corresponding to one of the processing chambers 6. Then, the storage chamber 5 continues to collect the wastewater of the first spray cleaning.

[0082] S2.4: When the wastewater in the storage chamber 5 reaches the preset volume again, the storage chamber 5 transfers the wastewater of the preset volume to the corresponding treatment chamber 6 through the diversion pump 9 corresponding to another treatment chamber 6 among the plurality of treatment chambers 6, until the plurality of treatment chambers 6 all contain the preset volume of wastewater and the storage chamber 5 is in an empty state;

[0083] S2.5: Close the cleaning first municipal water pipe 201 and the cleaning second municipal water pipe 301;

[0084] S2.6: A heating and constant temperature mechanism is arranged in the wall of the treatment chamber 6, wherein the heating and constant temperature mechanism comprises a heat source 35 and a heating tube 3501, the heat source 35 is arranged on the wastewater treatment pool 4, the heating tube 3501 is arranged in the wall of the treatment chamber 6, a cover plate 34 is detachably mounted on the treatment chamber 6, the cover plate 34 is buckled on the treatment chamber 6, the heating and constant temperature mechanism heats the wastewater in the treatment chamber 6 and keeps it at a constant temperature until the wastewater in all the treatment chambers 6 has completed the heating and constant temperature standing. After the heating and constant temperature standing of the treatment chamber 6, the wastewater in the treatment chamber 6 is divided into an impregnant layer located in the upper layer, a water-impregnant mixed layer located in the middle layer and a water layer located in the lower layer. At this time, the first working cycle ends and enters the second working cycle;

[0085] S3: The top plate 10 is provided with a plurality of impregnating agent layer suction mechanisms and a plurality of water-impregnating agent mixed layer suction mechanisms corresponding to the plurality of treatment chambers 6 one by one, and a water layer suction mechanism is provided in each of the plurality of treatment chambers 6. In the second working cycle, the impregnating agent layer, the water layer and the water-impregnating agent mixed layer in one of the treatment chambers 6 are sucked and transported in sequence, the impregnating agent layer is sucked into the infiltration treatment tank by the impregnating agent layer suction mechanism, the water layer is sucked into the filter box 27 by the water layer suction mechanism and transported to the second cleaning tank body 3, the water-impregnating agent mixed layer is transported to the mixing box 26 by the water-impregnating agent mixed layer suction mechanism, and is mixed with the waste water output from the second cleaning tank body 3 entering the mixing box 26. The workpieces are transported together to the first cleaning tank body 2 until the corresponding processing chamber 6 is in a cavity state, so as to complete the suction process. The remaining processing chambers 6 perform the suction process one by one until the corresponding processing chambers 6 are in a cavity state. During the suction and transportation process of the water layer and the water-impregnant mixed layer, the workpiece used for vacuum impregnation is taken out by the robot after vacuum impregnation treatment in the impregnation treatment tank and moved to the first cleaning tank body 2 for the first spray cleaning. During the suction and transportation process of the water layer, the workpiece after the first spray cleaning is transferred by the robot to the second cleaning tank body 3 for the second spray cleaning. The workpiece after the second spray cleaning is transferred by the robot to the next process. During the second working cycle, the first The wastewater from the first spray cleaning enters the storage chamber 5 until the wastewater in the storage chamber 5 reaches the preset volume. When the wastewater in the storage chamber 5 reaches the preset volume, the storage chamber 5 transports the wastewater to the processing chamber 6 in the empty state in the order in which the several processing chambers 6 become the empty state, until the several processing chambers 6 all have the preset volume of wastewater and the storage chamber 5 is in the empty state. At this time, the vacuum impregnation treatment is completed, the first spray cleaning and the second spray cleaning are stopped, and the several processing chambers 6 heat the wastewater at a constant temperature and let it stand until all the several processing chambers 6 are heated and kept at a constant temperature. At this time, the second working cycle is completed, and the impregnation agent layer, the water layer and the water-impregnation agent mixed layer are sequentially performed. During suction, since the water layer is sucked with the water-impregnant mixed layer first, there will be a situation where the water supply is obtained first in the cleaning tank body 3. At this time, according to the number of processing chambers 6, the volume of the filter box 27 and other specific conditions, the cleaning tank body 3 is in a state where the water supply is not sprayed to ensure the purpose of obtaining water supply in the cleaning tank body 2, or a larger filter box 27 is used to store the water layer that is preferentially extracted. When the water-impregnant mixed layer is sucked, after the first spray cleaning with the cleaning tank body 2, the filter box 27 supplies water to the cleaning tank body 3, or uses the cleaning city water pipeline 201 to provide initial water supply for the cleaning tank body 2 to complete the initial first spray cleaning. After the first spray cleaning-second spray cleaning process is formed,When the wastewater from the second spray cleaning is returned to the state where the water supply for the first spray cleaning is provided, the excess solution in the process is adjusted through the mixing box drain valve 202, the filter box drain valve 302, the treatment chamber drain valve 401, etc.;

[0086] Specific:

[0087] S3.1: In the second working cycle, the wastewater in the treatment chamber 6 is layered into an impregnant layer, a water-impregnant mixed layer and a water layer, the cover plate 34 is removed from the treatment chamber 6, and the top plate 10 is provided with a plurality of impregnant layer suction mechanisms corresponding to a plurality of treatment chambers 6, the impregnant layer suction mechanism comprises an impregnant layer suction lifting cylinder 14, the impregnant layer suction lifting cylinder 14 is arranged on the top plate 10, the output end of the impregnant layer suction lifting cylinder 14 is connected to an impregnant layer suction pump 15, the input end of the impregnant layer suction pump 15 is connected to an impregnant layer suction head 16, the output end of the impregnant layer suction pump 15 is connected to an impregnant layer delivery pipe 20, the impregnant layer delivery pipe 20 is provided with an impregnant layer valve 21, and the plurality of impregnant layer delivery pipes 20 are all delivered through the impregnant layer The main pipe 22 is connected to the impregnant storage tank 101, and the impregnant layer suction lifting cylinder 14 drives the impregnant layer suction head 16 to move to the corresponding impregnant layer position in the processing chamber 6, and the impregnant layer is sucked by the impregnant layer suction pump 15, and is transported to the impregnant storage tank 101 through the impregnant layer delivery pipe 20 and the impregnant layer delivery main pipe 22. As the level of the impregnant layer in the corresponding processing chamber 6 decreases, the impregnant layer suction lifting cylinder 14 drives the impregnant layer suction head 16 to move downward following the decrease in the level of the impregnant layer, wherein the descending speed of the impregnant layer suction head 16 is selected according to the specific process conditions, and since the impregnant layer valve 21 is provided, the corresponding impregnant layer valve 21 can be opened and closed according to the situation to ensure the flow direction of the impregnant layer during suction;

[0088] S3.2: The water layer suction mechanism includes a water layer suction pump 12, which is arranged on the processing chamber 6. The input end of the water layer suction pump 12 is connected to a water layer suction head 11, and the water layer suction head 11 is located in the processing chamber 6. The output end of the water layer suction pump 12 is connected to a water layer suction pipe 13, and the water layer suction pipe 13 is connected to a filter box 27. A filtering mechanism is arranged in the filter box 27. The water layer suction pump 12 sucks the water layer in the corresponding processing chamber 6 through the water layer suction head 11, and transports it to the filter box 27 through the water layer suction pipe 13. The sucked water layer is filtered under the action of the filtering mechanism, and then the filtered water layer is transported to the second cleaning tank 3 under the action of the filter box transmission mechanism. The flow direction of the water layer suction flow is controlled by opening and closing the water layer suction pumps 12 corresponding to different processing chambers 6, and a water layer suction valve can also be arranged at the corresponding water layer suction pipe 13 for separate control;

[0089] Specific:

[0090] S3.2.1: The filtering mechanism includes a detachable filter screen 2702, a filter chamber 2701 is provided in the filter box 27, the detachable filter screen 2702 is arranged in the filter chamber 2701, the water layer suction pump 12 sucks the water layer in the corresponding processing chamber 6 through the water layer suction head 11, and transports it to the filter box 27 through the water layer suction pipe 13, the sucked water layer is filtered under the action of the detachable filter screen 2702, and then the filtered water layer is transported to the second cleaning tank 3 under the action of the filter box transmission mechanism;

[0091] S3.3: The top plate 10 is provided with a plurality of water-impregnant mixed layer suction mechanisms corresponding to the plurality of treatment chambers 6 one by one, the water-impregnant mixed layer suction mechanism comprising a water-impregnant mixed layer suction lifting cylinder 17, the water-impregnant mixed layer suction lifting cylinder 17 being provided on the top plate 10, the output end of the water-impregnant mixed layer suction lifting cylinder 17 being connected to a water-impregnant mixed layer suction pump 18, the water-impregnant mixed layer suction pump 18 The input end of the water-impregnant mixed layer suction head 19 is connected to the water-impregnant mixed layer suction pump 18, and the output end of the water-impregnant mixed layer suction pipe 23 is connected to the water-impregnant mixed layer suction pipe 23. The water-impregnant mixed layer suction valve 24 is arranged on the water-impregnant mixed layer suction pipe 23. A plurality of the water-impregnant mixed layer suction pipes 23 are connected to the mixing box 26 through the water-impregnant mixed layer suction main pipe 25. The water-impregnant mixed layer suction lifting cylinder 17 is provided with The dynamic water-impregnant mixed layer suction head 19 moves to the position of the water-impregnant mixed layer in the corresponding processing chamber 6, and uses the water-impregnant mixed layer suction pump 18 to suck the water-impregnant mixed layer, and transports it to the mixing box 26 through the water-impregnant mixed layer suction pipe 23 and the water-impregnant mixed layer suction main pipe 25. As the level of the water-impregnant mixed layer in the corresponding processing chamber 6 decreases, the water-impregnant mixed layer suction lifting cylinder 17 drives the water-impregnant mixed layer suction head 19 to move downward following the degree of the decrease in the level of the water-impregnant mixed layer. According to the specific process conditions, the descending speed of the water-impregnant mixed layer suction head 19 is selected. Since the water-impregnant mixed layer suction valve 24 is provided, the corresponding water-impregnant mixed layer suction valve 24 can be opened and closed according to the situation to ensure the flow direction of the water-impregnant mixed layer during suction;

[0092] S3.4: The mixing box 26 is provided with a mixing mechanism, and the wastewater in the second cleaning tank body 3 transmitted by the second cleaning wastewater transmission mechanism is sent to the mixing box 26, and is mixed with the water-impregnating agent mixed layer entering through the water-impregnating agent mixed layer suction main pipe 25 under the action of the mixing mechanism, and the mixed liquid is transmitted to the first cleaning tank body 2 under the action of the mixing box transmission mechanism;

[0093] Specific:

[0094] S3.4.1: The mixing mechanism includes a mixing motor 2602, a mixing chamber 2601 is provided in the mixing box 26, the mixing motor 2602 is arranged in the mixing chamber 2601, and a mixing fan 2603 is connected to the output end of the mixing motor 2602, the mixing motor 2602 drives the mixing fan 2603 to rotate, and the wastewater in the second cleaning tank body 3 transmitted by the second cleaning wastewater transmission mechanism is sent to the mixing box 26, and is mixed with the water-impregnating agent mixed layer entering through the water-impregnating agent mixed layer suction main pipe 25 under the action of the rotating mixing fan 2603, and the mixed liquid is transmitted to the first cleaning tank body 2 under the action of the mixing box transmission mechanism;

[0095] S3.5: The impregnant layer, the water layer and the water-impregnant mixed layer in one of the treatment chambers 6 are sequentially pumped and transported until the corresponding treatment chamber 6 is in an empty state, so as to complete the pumping process. The remaining treatment chambers 6 are subjected to the pumping process one by one until the corresponding treatment chamber 6 is in an empty state. During the pumping and transporting process of the water layer and the water-impregnant mixed layer, the workpiece for vacuum impregnation is taken out by a robot after vacuum impregnation treatment in the impregnation tank 1 and moved to the first cleaning tank 2 for the first spray cleaning. During the pumping and transporting process of the water layer, the workpiece after the first spray cleaning is transferred by the robot to the second cleaning tank 3 for the second spray cleaning. After the second spray cleaning, the workpiece is transferred by the robot to the next process.

[0096] S3.6: In the second working cycle, the wastewater from the first spray cleaning is sent to the storage chamber 5 through the cleaning first wastewater transmission mechanism until the wastewater in the storage chamber 5 reaches the preset volume. When the wastewater in the storage chamber 5 reaches the preset volume, the storage chamber 5 transmits the wastewater to the processing chamber 6 in the empty state in the order in which the several processing chambers 6 become the empty state, until the several processing chambers 6 have the preset volume of wastewater and the storage chamber 5 is in the empty state;

[0097] S3.7: The cover plate 34 is buckled onto the processing chamber 6, and the heating and constant temperature mechanism heats the wastewater in the processing chamber 6 and keeps the wastewater at a constant temperature until the wastewater in all the processing chambers 6 is heated and kept at a constant temperature, at which time the second working cycle ends;

[0098] S4: Repeat the working process in the second working cycle to achieve continuous recycling of the spray wastewater;

[0099] Specifically, the first working cycle is the process cycle for the first time to recycle the spray wastewater using this method, and the second working cycle is the process cycle for daily recycling and treatment except the first time using this method. Specifically, a working cycle includes 24 hours, and the time of different processes can be adjusted according to the actual scheduling situation to ensure that the heating constant temperature standing time is more than four hours.

[0100] Combined with Figure 1-10 As shown, a device for recycling and treating spray wastewater using the above-mentioned vacuum infiltration process comprises:

[0101] A manipulator, a cleaning tank 2, a cleaning tank 3, a wastewater treatment tank 4, a mixing tank 26 and a filter tank 27;

[0102] A top plate 10 is arranged above the cleaning tank 1 2, the cleaning tank 2 3 and the wastewater treatment tank 4, and the manipulator is arranged on the top plate 10;

[0103] The first cleaning tank body 2 is connected to the wastewater treatment tank 4 and the mixing box 26 respectively, the mixing box 26 is connected to the first cleaning water pipeline 201, the second cleaning tank body 3 is connected to the filter box 27, the filter box 27 is connected to the second cleaning water pipeline 301, the second cleaning tank body 3 is connected to the mixing box 26, and the infiltration treatment tank is located on the side of the first cleaning tank body 2 and the second cleaning tank body 3;

[0104] The wastewater treatment pool 4 is provided with a storage chamber 5 and a plurality of treatment chambers 6, the storage chamber 5 is connected to the plurality of treatment chambers 6 respectively, the top plate 10 is provided with a plurality of impregnating agent layer suction mechanisms and a plurality of water-impregnating agent mixed layer suction mechanisms corresponding to the plurality of treatment chambers 6 one by one, and a plurality of the treatment chambers 6 are provided with a water layer suction mechanism;

[0105] The impregnation agent layer suction mechanism is communicated with the impregnation treatment tank, the water-impregnation agent mixed layer suction mechanism is communicated with the mixing box 26 , and the water layer suction mechanism is communicated with the filter box 27 .

[0106] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description in the specification are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A method for recycling and treating spray wastewater in a vacuum infiltration process, Features: The steps include: S1: After the vacuum impregnation treatment in the impregnation treatment tank, the workpiece for vacuum impregnation is taken out by the robot and moved to the cleaning tank body (2) for the first spray cleaning. The cleaning tank body (2) is connected to a mixing box (26), and the mixing box (26) is connected to a cleaning city water pipeline (201). In the first working cycle, the first water for the first spray cleaning comes entirely from city water. The cleaning tank body (2) is also connected to a wastewater treatment tank (4). The wastewater generated after the first spray cleaning enters the wastewater treatment tank (4). After the first spray cleaning, the workpiece is transferred by the robot to the cleaning tank body (3) for the first spray cleaning. The second spray cleaning, the second cleaning tank (3) is connected to a filter box (27), the filter box (27) is connected to a second cleaning city water pipeline (301), during the first working cycle, the water used for the second spray cleaning comes from city water, the second cleaning tank (3) is connected to a mixing box (26), waste water generated after the second spray cleaning enters the mixing box (26), the workpiece after the second spray cleaning is transferred to the next process by a robot, a top plate (10) is arranged above the impregnation treatment tank, the first cleaning tank (2), the second cleaning tank (3), and the waste water treatment tank (4), and the robot is arranged on the top plate (10); S2: In the first working cycle, the wastewater from the second spray cleaning is sent to the mixing box (26) and mixed with the municipal water entering through the first cleaning municipal water pipeline (201), and then sent to the first cleaning tank (2) to perform the first spray cleaning on the workpiece. The wastewater treatment tank (4) is provided with a storage chamber (5) and a plurality of treatment chambers (6). The storage chamber (5) collects the wastewater from the first spray cleaning. When the wastewater in the storage chamber (5) reaches a preset volume, the storage chamber (5) transfers the preset volume of wastewater to one of the plurality of treatment chambers (6). The storage chamber (5) continues to collect wastewater. When the wastewater in the storage chamber (5) reaches the preset volume again, When the wastewater is stored in the storage chamber (5), the storage chamber (5) transfers the preset volume of wastewater to another one of the plurality of treatment chambers (6) until the preset volume of wastewater is stored in the plurality of treatment chambers (6) and the storage chamber (5) is in an empty state. The first cleaning water pipe (201) and the second cleaning water pipe (301) are then closed, and the plurality of treatment chambers (6) heat the wastewater and place it at a constant temperature until all the plurality of treatment chambers (6) are heated and placed at a constant temperature. After the heating and placing of the treatment chambers (6) at a constant temperature, the wastewater in the treatment chambers (6) is divided into an impregnant layer at an upper layer, a water-impregnant mixed layer at a middle layer, and a water layer at a lower layer. At this time, the first working cycle ends and the second working cycle begins. S3: The top plate (10) is provided with a plurality of impregnating agent layer suction mechanisms and a plurality of water-impregnating agent mixed layer suction mechanisms corresponding to the plurality of processing chambers (6) one by one, and a water layer suction mechanism is provided in each of the plurality of processing chambers (6). In the second working cycle, the impregnating agent layer, the water layer and the water-impregnating agent mixed layer in one of the processing chambers (6) are sucked and transported in sequence, and the impregnating agent layer is sucked into the impregnation processing tank by the impregnating agent layer suction mechanism, and the water layer is sucked into the filter box (2) by the water layer suction mechanism. 7) and transported to the second cleaning tank (3), the water-impregnating agent mixed layer is transported to the mixing box (26) through the water-impregnating agent mixed layer suction mechanism, and is transported to the first cleaning tank (2) together with the waste water output from the second cleaning tank (3) entering the mixing box (26), until the corresponding treatment chamber (6) is in an empty state, so as to complete the suction process, and the remaining treatment chambers (6) are subjected to the suction process one by one until the corresponding treatment chambers (6) are in an empty state, and the suction process is performed on the water layer and the water-impregnating agent mixed layer. During the suction and transportation process, the workpiece for vacuum impregnation is taken out by the robot after the vacuum impregnation treatment in the impregnation treatment tank and moved to the first cleaning tank (2) for the first spray cleaning. During the suction and transportation process of the water layer, the workpiece after the first spray cleaning is transferred by the robot to the second cleaning tank (3) for the second spray cleaning. After the second spray cleaning, the workpiece is transferred by the robot to the next process. In the second working cycle, the waste water of the first spray cleaning enters the storage chamber (5) until the storage chamber When the wastewater in the storage chamber (5) reaches the preset volume, the storage chamber (5) transfers the wastewater to the processing chamber (6) in the empty state in the order in which the processing chambers (6) change to the empty state, until the processing chambers (6) all store the preset volume of wastewater and the storage chamber (5) is in the empty state, and the processing chambers (6) heat the wastewater at a constant temperature and keep it still until all the processing chambers (6) are heated and kept still at a constant temperature, at which point the second working cycle ends; S4: Repeat the working process in the second working cycle to achieve continuous recycling of the spray wastewater.

2. A method for recycling spray wastewater in a vacuum infiltration process according to claim 1, Features: The S1 step specifically includes the following steps: S1.1: The impregnation treatment tank comprises an impregnation tank body (1) and an impregnation agent storage box (101), wherein the impregnation agent storage box (101) is connected to the impregnation tank body (1), and the robot removes the workpiece for vacuum impregnation from the impregnation tank body (1) after the vacuum impregnation treatment in the impregnation tank body (1) and moves it to the cleaning tank body (2) for the first spray cleaning, wherein the cleaning tank body (2) is connected to a mixing box conveying mechanism, and the cleaning tank body (2) is connected to the mixing box through the mixing box conveying mechanism. (26) connected, in the first working cycle, the first water used for the first spray cleaning is completely from the city water, the city water enters the cleaning tank (2) through the cleaning city water pipeline (201) and the mixing box (26), the cleaning tank (2) is connected with a cleaning wastewater transmission mechanism, the cleaning tank (2) is connected with the wastewater treatment tank (4) through the cleaning wastewater connection mechanism, and the wastewater generated after the first spray cleaning is sent to the wastewater treatment tank (4) through the wastewater transmission mechanism; S1.2: The manipulator transfers the workpiece after the first spray cleaning to the second cleaning tank (3) for a second spray cleaning. The second cleaning tank (3) is connected to a filter box transmission mechanism. The second cleaning tank (3) is connected to the filter box (27) through the filter box transmission mechanism. During the first working cycle, the water used for the second spray cleaning comes from city water. The city water enters the second cleaning tank (3) through the second cleaning city water pipeline (301) and the filter box (27). The second cleaning tank (3) is connected to a second cleaning wastewater transmission mechanism. The second cleaning tank (3) is connected to the mixing tank (26) through the second cleaning wastewater transmission mechanism. The wastewater generated after the second spray cleaning is sent to the mixing tank (26) through the second cleaning wastewater transmission mechanism. S1.3: The robot transfers the workpiece after the second spray cleaning to the next process.

3. The method for recycling spray wastewater in a vacuum infiltration process according to claim 2, Features: The S2 step specifically includes the following steps: S2.1: In the first working cycle, the wastewater from the second spray cleaning is sent to the mixing box (26) through the second cleaning wastewater transmission mechanism, mixed with the municipal water entering through the first cleaning municipal water pipeline (201), and then transported to the first cleaning tank (2) through the mixing box transmission mechanism to perform the first spray cleaning; S2.2: the wastewater from the first spray cleaning is sent to the storage chamber (5) through a cleaning wastewater transmission mechanism and is collected by the storage chamber (5); S2.3: The storage chamber (5) is connected to the processing chamber (6) via a shunt pump (9), and when the wastewater collected in the storage chamber (5) reaches a preset volume, the storage chamber (5) transfers the wastewater of the preset volume to the corresponding processing chamber (6) via a shunt pump (9) corresponding to one of the processing chambers (6), and then the storage chamber (5) continues to collect the wastewater of the first spray cleaning; S2.4: When the wastewater in the storage chamber (5) reaches the preset volume again, the storage chamber (5) transfers the wastewater of the preset volume to the corresponding treatment chamber (6) through the diversion pump (9) corresponding to another treatment chamber (6) among the plurality of treatment chambers (6), until the plurality of treatment chambers (6) all contain the wastewater of the preset volume and the storage chamber (5) is in an empty state; S2.5: closing the cleaning first municipal water pipeline (201) and the cleaning second municipal water pipeline (301); S2.6: A heating and constant temperature mechanism is arranged in the wall of the treatment chamber (6), and a cover plate (34) is detachably mounted on the treatment chamber (6). The cover plate (34) is buckled onto the treatment chamber (6), and the heating and constant temperature mechanism heats the wastewater in the treatment chamber (6) and keeps it at a constant temperature until the wastewater in all the treatment chambers (6) has completed the heating and constant temperature standing. After the heating and constant temperature standing of the treatment chamber (6), the wastewater in the treatment chamber (6) is divided into an impregnant layer located at the upper layer, a water-impregnant mixed layer located at the middle layer, and a water layer located at the lower layer. At this time, the first working cycle ends and enters the second working cycle.

4. The method for recycling spray wastewater in a vacuum infiltration process according to claim 3, Features: The S3 step specifically includes the following steps: S3.1: In the second working cycle, the wastewater in the treatment chamber (6) is evenly layered into an impregnant layer, a water-impregnant mixed layer and a water layer. The cover plate (34) is removed from the treatment chamber (6). The top plate (10) is provided with a plurality of impregnant layer suction mechanisms corresponding to the plurality of treatment chambers (6) one by one. The impregnant layer suction mechanisms include an impregnant layer suction lifting cylinder (14). The impregnant layer suction lifting cylinder (14) is provided on the top plate (10). The output end of the impregnant layer suction lifting cylinder (14) is connected to an impregnant layer suction pump (15). The input end of the impregnant layer suction pump (15) is connected to an impregnant layer suction head (16). The output end of the impregnant layer suction pump (15) is connected to an impregnant layer delivery pipe (20). An impregnant layer valve (21) is provided on the impregnant layer delivery pipe (20), and a plurality of the impregnant layer delivery pipes (20) are connected to the impregnant storage box (101) through the impregnant layer delivery main pipe (22). The impregnant layer suction lifting cylinder (14) drives the impregnant layer suction head (16) to move to the impregnant layer position in the corresponding processing chamber (6), and the impregnant layer is sucked by the impregnant layer suction pump (15), and is delivered to the impregnant storage box (101) through the impregnant layer delivery pipe (20) and the impregnant layer delivery main pipe (22). As the level of the impregnant layer in the corresponding processing chamber (6) decreases, the impregnant layer suction lifting cylinder (14) drives the impregnant layer suction head (16) to move downward following the decrease in the level of the impregnant layer; S3.2: The water layer suction mechanism comprises a water layer suction pump (12), the water layer suction pump (12) is arranged on the processing chamber (6), the input end of the water layer suction pump (12) is connected to a water layer suction head (11), the water layer suction head (11) is located in the processing chamber (6), the output end of the water layer suction pump (12) is connected to a water layer suction pipe (13), the water layer suction pipe (13) is connected to a filter box (27), a filtering mechanism is arranged in the filter box (27), the water layer suction pump (12) sucks the water layer in the corresponding processing chamber (6) through the water layer suction head (11), and transports it to the filter box (27) through the water layer suction pipe (13), the sucked water layer is filtered under the action of the filtering mechanism, and then the filtered water layer is transported to the second cleaning tank (3) under the action of the filter box transmission mechanism; S3.3: The top plate (10) is provided with a plurality of water-impregnant mixed layer suction mechanisms corresponding to the plurality of treatment chambers (6) one by one, the water-impregnant mixed layer mixing mechanisms comprising a water-impregnant mixed layer suction lifting cylinder (17), the water-impregnant mixed layer suction lifting cylinder (17) being provided on the top plate (10), the output end of the water-impregnant mixed layer suction lifting cylinder (17) being connected to a water-impregnant mixed layer suction pump (18), the input end of the water-impregnant mixed layer suction pump (18) being connected to a water-impregnant mixed layer suction head (19), the output end of the water-impregnant mixed layer suction pump (18) being connected to a water-impregnant mixed layer suction pipe (23), the water-impregnant mixed layer suction pipe (23) being provided with a water-impregnant mixed layer suction valve (24), and the plurality of water - the impregnant mixed layer suction pipe (23) is connected to the mixing box (26) through the water-impregnant mixed layer suction main pipe (25), the water-impregnant mixed layer suction lifting cylinder (17) drives the water-impregnant mixed layer suction head (19) to move to the water-impregnant mixed layer position in the corresponding processing chamber (6), and the water-impregnant mixed layer is sucked by the water-impregnant mixed layer suction pump (18), and is transported to the mixing box (26) through the water-impregnant mixed layer suction pipe (23) and the water-impregnant mixed layer suction main pipe (25), and as the level of the water-impregnant mixed layer in the corresponding processing chamber (6) decreases, the water-impregnant mixed layer suction lifting cylinder (17) drives the water-impregnant mixed layer suction head (19) to move downward following the decrease in the level of the water-impregnant mixed layer; S3.4: A mixing mechanism is provided in the mixing box (26), and the wastewater in the second cleaning tank (3) transmitted by the second cleaning wastewater transmission mechanism is sent to the mixing box (26), and is mixed with the water-impregnating agent mixed layer entering through the water-impregnating agent mixed layer suction main pipe (25) under the action of the mixing mechanism. Under the action of the mixing box transmission mechanism, the mixed liquid is transmitted to the first cleaning tank (2); S3.5: The impregnant layer, the water layer and the water-impregnant mixed layer in one of the processing chambers (6) are sequentially pumped and transported until the corresponding processing chamber (6) is in an empty state, so as to complete the pumping process. The remaining processing chambers (6) are pumped and transported one by one until the corresponding processing chamber (6) is in an empty state. During the pumping and transporting process of the water layer and the water-impregnant mixed layer, the workpiece for vacuum impregnation is taken out by a robot after vacuum impregnation treatment in the impregnation tank (1) and moved to the first cleaning tank (2) for a first spray cleaning. During the pumping and transporting process of the water layer, the workpiece after the first spray cleaning is transferred by the robot to the second cleaning tank (3) for a second spray cleaning. After the second spray cleaning, the workpiece is transferred by the robot to the next process. S3.6: During the second working cycle, the wastewater from the first spray cleaning is sent to the storage chamber (5) through the cleaning first wastewater transmission mechanism until the wastewater in the storage chamber (5) reaches the preset volume. When the wastewater in the storage chamber (5) reaches the preset volume, the storage chamber (5) transmits the wastewater to the processing chamber (6) in the empty state in the order in which the plurality of processing chambers (6) become the empty state, until the plurality of processing chambers (6) all contain the preset volume of wastewater and the storage chamber (5) is in the empty state; S3.7: The cover plate (34) is buckled onto the processing chamber (6), and the heating and constant temperature mechanism heats the wastewater in the processing chamber (6) and keeps it at a constant temperature until the wastewater in all the processing chambers (6) is heated and kept at a constant temperature, at which time the second working cycle ends.

5. The method for recycling spray wastewater in a vacuum infiltration process according to claim 2, Features: The S1.1 step specifically includes the following steps: S1.1.1: The mixing box delivery mechanism comprises a mixing box delivery pipe (31) and a mixing box delivery pump (3101), wherein one end of the mixing box delivery pipe (31) is connected to a cleaning tank body (2), and the other end of the mixing box delivery pipe (31) is connected to a mixing box (26). The mixing box delivery pump (3101) is arranged on the mixing box delivery pipe (31). In the first working cycle, the first water used for the first spray cleaning is completely from municipal water. The municipal water enters the mixing box (26) through the cleaning municipal water pipeline (201), and then the municipal water is delivered to the cleaning tank body (2) under the action of the mixing box delivery pump (3101).

6. The method for recycling spray wastewater in a vacuum infiltration process according to claim 5, Features: The step S1.2 specifically includes the following steps: S1.2.1: The filter box transmission mechanism comprises a filter box transmission pipe (28) and a filter box transmission pump (2801), one end of the filter box transmission pipe (28) is connected to the second cleaning tank body (3), and the other end of the filter box transmission pipe (28) is connected to the filter box (27), and the filter box transmission pump (2801) is arranged on the filter box transmission pipe (28). In the first working cycle, the water used for the second spray cleaning comes from the city water, and the city water enters the filter box (27) through the second cleaning city water pipeline (301), and then the city water is sent to the second cleaning tank body (3) under the action of the filter box transmission pump (2801); S1.2.2: The second cleaning wastewater transmission mechanism includes a second cleaning wastewater transmission pipe (29) and a second cleaning wastewater transmission pump (30). One end of the second cleaning wastewater transmission pipe (29) is connected to the second cleaning tank body (3), and the other end of the second cleaning wastewater transmission pipe (29) is connected to the mixing box (26). The second cleaning wastewater transmission pump (30) is arranged on the second cleaning wastewater transmission pipe (29). Under the action of the second cleaning wastewater transmission pump (30), the wastewater generated after the second spray cleaning is sent to the mixing box (26) through the second cleaning wastewater transmission pipe (29).

7. The method for recycling spray wastewater in a vacuum infiltration process according to claim 3, Features: The step S2.2 specifically includes the following steps: S2.2.1: The cleaning wastewater transmission mechanism comprises a cleaning wastewater transmission pipe (7) and a cleaning wastewater transmission pump (8), one end of the cleaning wastewater transmission pipe (7) is connected to a cleaning tank (2), and the other end of the cleaning wastewater transmission pipe (7) is connected to a storage chamber (5), and the cleaning wastewater transmission pump (8) is arranged on the cleaning wastewater transmission pipe (7). The wastewater from the first spray cleaning is sent to the storage chamber (5) through the cleaning wastewater transmission pipe (7) by the cleaning wastewater transmission pump (8) and collected by the storage chamber (5).

8. The method for recycling spray wastewater in a vacuum infiltration process according to claim 4, Features: The step S3.2 specifically includes the following steps: S3.2.1: The filtering mechanism includes a removable filter screen (2702), a filter chamber (2701) is provided in the filter box (27), the removable filter screen (2702) is arranged in the filter chamber (2701), the water layer suction pump (12) sucks the water layer in the corresponding processing chamber (6) through the water layer suction head (11), and transports it to the filter box (27) through the water layer suction pipe (13), and the sucked water layer is filtered under the action of the removable filter screen (2702), and then the filtered water layer is transported to the second cleaning tank (3) under the action of the filter box transmission mechanism.

9. The method for recycling spray wastewater in a vacuum infiltration process according to claim 8, Features: The step S3.4 specifically includes the following steps: S3.4.1: The mixing mechanism includes a mixing motor (2602), a mixing chamber (2601) is provided in the mixing box (26), the mixing motor (2602) is arranged in the mixing chamber (2601), the output end of the mixing motor (2602) is connected to a mixing fan blade (2603), the mixing motor (2602) drives the mixing fan blade (2603) to rotate, and the wastewater in the second cleaning tank body (3) transmitted by the second cleaning wastewater transmission mechanism is sent to the mixing box (26), and is mixed with the water-impregnating agent mixing layer entering through the water-impregnating agent mixing layer suction main pipe (25) under the action of the rotating mixing fan blade (2603), and the mixed liquid is transmitted to the first cleaning tank body (2) under the action of the mixing box transmission mechanism.

10. A device for recycling and treating spray wastewater in a vacuum infiltration process using the method for recycling and treating spray wastewater in any one of claims 1 to 9, It is characterized in that include: A manipulator, a cleaning tank body (2), a cleaning tank body (3), a wastewater treatment tank (4), a mixing tank (26), and a filter tank (27); A top plate (10) is arranged above the first cleaning tank body (2), the second cleaning tank body (3), and the wastewater treatment pool (4), and the robot is arranged on the top plate (10); The first cleaning tank body (2) is connected to the wastewater treatment tank (4) and the mixing box (26), respectively; the mixing box (26) is connected to a first cleaning water pipeline (201); the second cleaning tank body (3) is connected to a filter box (27), the filter box (27) is connected to a second cleaning water pipeline (301); the second cleaning tank body (3) is connected to the mixing box (26); and the impregnation treatment tank is located on the side of the first cleaning tank body (2) and the second cleaning tank body (3); The wastewater treatment pool (4) is provided with a storage chamber (5) and a plurality of treatment chambers (6), the storage chamber (5) being connected to the plurality of treatment chambers (6) respectively, the top plate (10) being provided with a plurality of impregnating agent layer suction mechanisms and a plurality of water-impregnating agent mixed layer suction mechanisms corresponding one to one to the plurality of treatment chambers (6), and a water layer suction mechanism being provided in each of the plurality of treatment chambers (6); The impregnation agent layer suction mechanism is connected to the impregnation treatment tank, the water-impregnation agent mixed layer suction mechanism is connected to the mixing box (26), and the water layer suction mechanism is connected to the filter box (27).

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