CN210560838U - Degreasing circulating water recycling system for electrophoretic coating - Google Patents
Degreasing circulating water recycling system for electrophoretic coating Download PDFInfo
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- CN210560838U CN210560838U CN201921379022.8U CN201921379022U CN210560838U CN 210560838 U CN210560838 U CN 210560838U CN 201921379022 U CN201921379022 U CN 201921379022U CN 210560838 U CN210560838 U CN 210560838U
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Abstract
The utility model provides a degreasing circulating water recycling system for electrophoretic coating, which comprises a degreasing area and a washing area which are arranged along the conveying direction of a workpiece in sequence; the bottom of the degreasing area is provided with a drain outlet which is connected with a filtering mechanism, and degreasing liquid in the degreasing area flows back into the degreasing area after being filtered by the filtering mechanism from the drain outlet; a water inlet is arranged above the water washing area and used for providing clean water into the water washing area; a first reverse conveying pipeline is arranged between the degreasing area and the water washing area, the first reverse conveying pipeline inclines downwards from the water washing area to the degreasing area, and a degreasing reverse port and a water washing reverse port are formed in the first reverse conveying pipeline; the degreasing reverse port is positioned in the degreasing area and faces to the bottom of the degreasing area; the water washing reverse port is positioned in the water washing area and faces to the bottom of the water washing area. The utility model discloses a degreasing circulation water recycling system of electrophoresis application can show water consumption and the energy consumption that reduces among the pretreatment processes before the application to can realize higher water utilization ratio and better greasy dirt cleaning performance.
Description
Technical Field
The utility model relates to an electrophoresis application field especially relates to the degrease circulating water field of recycling of electrophoresis application.
Background
Electrophoretic coating is a coating method in which particles of a pigment, a resin, or the like suspended in an electrophoretic fluid are directionally transferred by an applied electric field and deposited on a surface of a substrate, which is one of electrodes. The electrophoretic coating process generally comprises four main processes of pretreatment before coating, electrophoretic coating, cleaning after electrophoresis, drying of electrophoretic coating and the like. The pretreatment process before coating refers to the removal of various oil stains (such as lubricating oil, emulsion, grease, sweat stains and the like) and dust on the surface of a coated object before electrophoretic coating. Currently, the following three problems are prevalent in the pretreatment process prior to coating: (1) the oil removing and cleaning effect on the workpiece is not good enough, so that oil stain remained on the workpiece enters the next process, further tank liquor of other processes is polluted, and the electrophoretic coating effect is influenced; (2) a large amount of clear water is used for achieving a good oil removal cleaning effect, so that high water resource consumption and more wastewater discharge are generated, and the energy conservation, emission reduction and environmental friendliness are not facilitated; (3) in order to treat a large amount of waste water generated in the pretreatment process before coating, the process energy consumption is high, and the production cost is increased.
Chinese patent document CN208748231U discloses a pretreatment oil removal system, and specifically discloses a pretreatment oil removal system comprising a degreasing area, a transition area and a water washing area which are sequentially arranged along the conveying direction of a workpiece, wherein the degreasing area comprises a degreasing tank and a spraying area which are sequentially arranged along the conveying direction of the workpiece, a liquid storage tank communicated with the degreasing tank is arranged at the bottom of the degreasing tank, and the liquid storage tank conveys degreasing liquid back to the degreasing tank through a connecting pipeline provided with a filtering mechanism; the spraying area comprises a spraying pipe assembly which is arranged at the top and communicated with the connecting pipeline, and the bottom effluent is connected to the filtering mechanism through a pipeline; a straight spray pipe connected with a water supply pipe is arranged at the top of the transition area; the water washing area comprises a water washing tank and a spray pipe assembly arranged above the water washing tank, and water discharged from the bottom of the water washing tank is connected to the spray pipe assembly above the water washing tank through filtration. However, in the specific operation process, technicians find that the pretreatment oil removal system still has the problems of large water consumption, high energy consumption of the treatment process and greasy dirt on treated workpieces.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the above-mentioned defect of prior art, provide a degreasing circulating water recycling system of electrophoresis application, can show water consumption and the energy consumption that reduces among the pretreatment processes before the application to can realize higher water utilization ratio and better greasy dirt cleaning performance.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:
the utility model provides a degreasing circulating water recycling system for electrophoretic coating, which comprises a degreasing area and a washing area which are arranged along the conveying direction of a workpiece in sequence;
a drain outlet is formed in the bottom of the degreasing area and connected with a filtering mechanism, and degreasing liquid in the degreasing area flows back into the degreasing area after being filtered by the filtering mechanism from the drain outlet;
a water inlet is arranged above the washing area and used for providing clean water into the washing area;
a first reverse conveying pipeline is arranged between the degreasing area and the water washing area, is positioned at the tops of the degreasing area and the water washing area and inclines downwards from the water washing area to the degreasing area, and is provided with a degreasing reverse port and a water washing reverse port; the degreasing reverse port is positioned in the degreasing area and faces to the bottom of the degreasing area; the water washing reverse port is positioned in the water washing area and faces to the bottom of the water washing area.
In order to further optimize the above technical solution, the technical measures taken by the present invention further include:
furthermore, the degreasing area comprises a spraying degreasing area and a soaking degreasing area which are sequentially arranged along the conveying direction of the workpiece;
the degreasing reverse port comprises a soaking degreasing reverse port and a spraying degreasing reverse port, and the soaking degreasing reverse port is higher than the spraying degreasing reverse port in elevation;
the spray degreasing reverse port is positioned in the spray degreasing area and faces the bottom of the spray degreasing area;
the soaking and degreasing reverse port is positioned in the soaking and degreasing area and faces to the bottom of the soaking and degreasing area.
Further, the sewage draining outlet is arranged at the bottom of the spray degreasing area; and the degreasing liquid in the spray degreasing area flows back to the spray degreasing area after being filtered by the filtering mechanism from the sewage outlet.
Further, a drainage plate is arranged at the bottom of the spray degreasing area, and comprises a drainage outer plate and a drainage inner plate; the drainage outer plate is obliquely arranged towards the center of the bottom along the wall surface of the spray degreasing area to form a slope surface; the drainage inner plate is arranged at the center of the bottom of the spray degreasing area and is in a pyramid or cone shape;
the drain is located between the drainage outer plate and the drainage inner plate.
Furthermore, stirring devices are arranged in the water washing area and the soaking and degreasing area.
Further, the water washing area comprises a first-stage water washing area and a second-stage water washing area which are sequentially arranged along the conveying direction of the workpiece;
the water washing reverse port comprises a primary water washing reverse port and a secondary water washing reverse port, and the secondary water washing reverse port is higher than or equal to the primary water washing reverse port in elevation;
the first-stage water washing reverse port is positioned in the first-stage water washing area and faces the bottom of the first-stage water washing area;
the second-stage water washing reverse port is positioned in the second-stage water washing area and faces to the bottom of the second-stage water washing area.
Preferably, the first-stage water washing area and the second-stage water washing area are soaking water washing areas.
Further, the water inlet is connected with a clean water tank through a water inlet pipeline, and the clean water tank is higher than the secondary washing area in elevation;
one end of the water inlet pipeline is provided with the water inlet, and the other end of the water inlet pipeline is provided with the water outlet; the water inlet is positioned in the clear water tank; the water outlet is positioned in the secondary washing area;
the water inlet pipeline controls water inlet through an electromagnetic valve.
Furthermore, a degreasing agent replenishing opening is formed above the degreasing area; the degreasing agent replenishing port is arranged above the soaking and degreasing area and is connected with the degreasing agent replenishing box through a pipeline.
Further, the degreasing circulating water recycling system for electrophoretic coating further comprises an air exhaust assembly, wherein the air exhaust assembly comprises:
the collecting cover is arranged above the degreasing area and used for collecting water vapor generated by the degreasing circulating water recycling system for electrophoretic coating;
and the exhaust fan is connected with the collecting cover through an exhaust pipeline and is used for forming negative pressure in the collecting cover.
Furthermore, the degreasing circulating water recycling system for electrophoretic coating also comprises a hot-washing area, wherein a drain outlet is formed in the bottom of the hot-washing area, the drain outlet in the hot-washing area is connected with a filtering mechanism, and the hot-washing liquid in the hot-washing area flows back to the hot-washing area after being filtered by the filtering mechanism from the drain outlet in the hot-washing area;
a second reverse conveying pipeline is arranged between the hot washing area and the degreasing area; the second reverse conveying pipeline inclines downwards from the degreasing area to the hot washing area, and the upper end of the second reverse conveying pipeline is communicated with the lower end of the first reverse conveying pipeline;
the second reverse conveying pipeline is provided with a hot-ironing washing reverse port, and the hot-ironing washing reverse port is located in the hot-ironing washing area and faces the bottom of the hot-ironing washing area.
Preferably, the second reverse conveying pipeline and the first reverse conveying pipeline are of an integral structure, and the second reverse conveying pipeline and the first reverse conveying pipeline of the integral structure are inclined downwards from the secondary water washing area to the hot washing area.
Further preferably, the hot-washing area is a soaking hot-washing area.
Furthermore, a drainage plate is arranged at the bottom of the hot-washing area, and the drainage plate in the hot-washing area comprises an outer drainage plate and an inner drainage plate; the drainage outer plate is obliquely arranged towards the center of the bottom along the wall surface of the hot-washing area to form a slope surface; the drainage inner plate is arranged at the center of the bottom of the hot washing area and is in a pyramid or cone shape;
and a sewage discharge outlet in the hot-washing area is positioned between the drainage outer plate and the drainage inner plate.
Further, the top in hot-ironing washing district is provided with collects the cover, collect the cover through exhaust duct with the exhaust fan is connected.
Further, filtering mechanism pass through sewage pipes with the drain is connected, filtering mechanism includes:
the filter tank is internally provided with filter cloth and a scroll set; the filter cloth is arranged below the pipe orifice of the sewage discharge pipeline; the scroll group comprises a first scroll and a second scroll which are arranged in parallel, the first scroll is used for reeling the filter cloth, and the second scroll is connected with a scroll driving motor and is suitable for conveying the filter cloth to the second scroll from the first scroll;
the sludge settling tank is connected with the filter tank, is positioned below the filter tank and is used for separating solid particles and/or grease in the filtrate treated by the filter cloth; the bottom of the sludge settling tank is provided with a sludge discharge port, and the side wall of the sludge settling tank is connected with a return pipeline.
Further, the filtering mechanism also comprises a ceramic membrane filter, and the ceramic membrane filter is positioned on the sewage discharge pipeline; and the water outlet of the ceramic membrane filter is communicated with the water inlet of the filter tank through the sewage discharge pipeline.
Further, the material of filter cloth is the oil absorption cotton.
Furthermore, the filtering mechanism also comprises a floating ball which is arranged above the filter cloth;
the floating ball is linked with the reel driving motor.
Furthermore, the filtering mechanism further comprises a grid, and the grid is horizontally arranged below the filter cloth and used for providing horizontal support for the filter cloth between the first reel and the second reel.
Furthermore, the filtering mechanism further comprises a solid waste collecting tank which is arranged on one side of the second reel and used for collecting the filter cloth conveyed by the second reel.
Furthermore, the tank bottom of the filter tank is obliquely arranged from one side of the tank wall of the filter tank to the other side; the included angle between the bottom of the filter tank and the wall of the filter tank is 45-80 degrees;
the lowest position of the inclined tank bottom is a water outlet of the filter tank and is communicated with a water inlet of the sludge settling tank.
Further, the sludge settling tank comprises a water collecting area, a clear water area and a settling area positioned between the water collecting area and the clear water area;
the side wall of the water collecting area is provided with a water inlet of the sludge settling tank, and the side wall of the clear water area is provided with a water outlet of the sludge settling tank;
the water collecting area and the clear water area and the settling area are separated by partition plate groups, each partition plate group consists of an overflow plate and a flow baffle, and the flow baffles are arranged in parallel with the overflow plates;
the overflow plate is positioned at one side close to a water inlet of the sludge settling tank; the flow baffle is positioned at one side close to the water outlet of the sludge settling tank; the overflow plate is vertically fixed at the bottom of the sludge settling tank; one end of the flow baffle is fixed on the top of the sludge settling tank, and the other end of the flow baffle is lower than the top end of the overflow plate.
Furthermore, at least three settling zones are arranged between the water collecting zone and the clear water zone in sequence;
and the adjacent settling zones are separated by the partition plate group.
Furthermore, a sludge discharge port is formed at the bottom of the water collecting area;
the sedimentation area is characterized in that a sedimentation pipeline is vertically arranged in the middle of the sedimentation area, a sludge discharge port is arranged at the lower part of the sedimentation pipeline, an oil discharge port is arranged at the upper part of the sedimentation pipeline, and the height of the oil discharge port is higher than that of the top end of the overflow plate.
The utility model adopts the above technical scheme, compare with prior art, have following technological effect:
(1) the degreasing circulating water recycling system for electrophoretic coating of the utility model is provided with a first reverse conveying pipeline between the adjacent degreasing area and the washing area, the first reverse conveying pipeline is arranged to incline downwards from the washing area to the direction of the degreasing area, and the washing liquid in the washing area automatically flows into the degreasing area from the degreasing reverse opening through the washing reverse opening and the first reverse conveying pipeline; the utility model discloses utilize liquid level difference automatic realization coating preceding pretreatment in back end technology to the liquid of front process to be carried, can enough improve the reuse rate of water, can also realize zero power transmission, help reducing water consumption and energy consumption simultaneously. In addition, the utility model is also provided with a filtering mechanism which is used for filtering the electrophoretic coating wastewater discharged from the bottom of the degreasing area in real time, and the electrophoretic coating wastewater is treated by the filtering mechanism and then flows back to the degreasing area for recycling; the utility model discloses a reverse transport structure between filter mechanism and degreasing area and the washing district cooperatees, can further improve the utilization ratio of pretreatment process normal water before the application, can also avoid simultaneously reducing because of the deoiling cleaning performance that the degreasing area water quality that reverse transport caused descends and leads to. The utility model discloses an above-mentioned technical scheme has realized higher water utilization ratio and better greasy dirt cleaning performance under lower energy consumption.
(2) The utility model discloses set up in the degreasing area and spray the degreasing area and soak the degreasing area, set up one-level washing district and second grade washing district in the washing district, the work piece of electrophoresis application has the benefit of following two aspects at least through spraying the degreasing process, soaking degreasing process, one-level washing process and second grade washing process in proper order: firstly, multiple processes are beneficial to improving the oil removing and cleaning effect of the workpiece; and secondly, the number of the pond bodies passed by the reverse conveying is increased by matching with the technical effect (1) so as to increase the times of water body reutilization and further improve the utilization rate of water.
(3) The utility model discloses the subassembly of airing exhaust has still been set up, is used for collecting the vapor that the degrease circulating water reuse system of electrophoresis application produced, its benefit that has following two aspects at least: firstly, water vapor generated by a degreasing circulating water recycling system for electrophoretic coating is collected under negative pressure so as to reduce the pollution of a pretreatment process before coating to the environment; secondly, the subassembly of airing exhaust collects the vapor that degrease district (and heat and scald the washing district) produced with the negative pressure, and the inlet channel inputs the clear water to washing in the district, and both mutually support, can guarantee the utility model discloses the model of the reverse transport between well degrease district and the washing district.
(4) The filtering mechanism of the utility model adopts a structure that the filtering tank is combined with the sludge settling tank, the filter cloth of the filtering tank is matched with the scroll set, and the problem that the filtering speed and the filtering effect are influenced due to the blockage of the filter cloth in the filtering process can be avoided by conveying the filter cloth to the second scroll by the first scroll; simultaneously, set up the sludge settling tank in filter tank below, the sludge settling tank is connected with the filter tank, can carry out further separation to solid particle thing and/or grease in the filtrating after filter cloth handles, helps improving the quality of water of reuse water after filtering mechanism handles. The utility model discloses the material of well filter cloth uses the oil absorption cotton, and it can enough play the effect that filters the solid particle thing in the electrophoresis application waste water, can also detach a large amount of greases in the electrophoresis application waste water, is applicable to the hydrologic cycle of pretreatment processes before the application.
(5) The utility model discloses well filter mechanism's filter-tank bottom sets up to the setting of the cell wall side opposite side slope from the filter-tank, and the lowest position department of slope tank bottom sets up to the delivery port of filter-tank, and communicates the water inlet of sludge settling tank, and it has the benefit of following two aspects at least: firstly, can reduce the high drop between filter cloth and the sludge precipitation tank and cause the influence that solid particle thing subsides in the water vibrations in the time of filtrating gets into sludge precipitation, secondly the tank bottom of slope does benefit to the solid particle thing of filtrating and slowly falls and gets into sludge precipitation tank, avoids the solid particle thing of filtrating in to remain in the filter tank bottom. The utility model discloses in, the slope tank bottom organically combines filter tank and sludge settling tank as an organic whole, utilizes the gravitational potential energy of water, makes the automatic sludge settling tank that flows in of filtrating after the filter cloth is handled through the slope tank bottom, has removed pipeline's use from, helps reducing energy consumption and equipment cost.
(6) The utility model discloses well filter mechanism sets up the sludge settling tank to include catchment area, clear water district, and lie in the catchment area with the settlement zone between the clear water district, the filtrating after the filter cloth filters gets into the catchment area earlier, flows into settlement zone and clear water district in proper order by the catchment area again, can further reduce the height difference between filter cloth and the sludge settling tank and cause the filtrating to get into the influence of solid particle thing deposit in the sludge deposit of water vibrations when depositing; the utility model also arranges an overflow plate and a flow baffle between the water collecting area, the settling area and the clear water area; when the filtrate entering the water collecting area sequentially passes through the settling area and the clear water area in an overflow mode, grease in the filtrate floats above the water body and enters the oil sludge collecting tank through an oil discharge port in the settling area, and solid particles in the filtrate settle below the water body and enter the oil sludge collecting tank through sludge discharge ports in the water collecting area and the settling area, so that the grease and the solid particles in the electrophoretic coating wastewater are removed simultaneously. Practice shows that the water quality of the reuse water treated by the filtering mechanism of the utility model is better, and the reuse water is suitable for water reuse of a pretreatment procedure before coating; will the utility model discloses a filtering mechanism connects spraying degreasing area (and the district is washed to the heat scalding) of pretreatment processes before the application, deuterogamies the utility model discloses a reverse transport structure for wash workpiece surface's greasy dirt, can reach better greasy dirt cleaning performance.
Drawings
Fig. 1 is a schematic structural view of a degreasing circulating water recycling system for electrocoating in embodiment 1 of the present invention;
FIG. 2 is a schematic view of the filter mechanism of FIG. 1;
fig. 3 is a schematic structural view of a degreasing circulating water recycling system for electrocoating in embodiment 2 of the present invention;
wherein the reference symbols are:
110-spray degreasing area; 120-soaking a degreasing area; 130-a flow-guiding plate; 131-a drainage outer plate; 132-a drainage inner plate; 140-a sewage draining outlet; 210-a first water washing zone; 220-a secondary water wash zone; 300-a hot-washing area; 400-a first reverse conveying pipe; 411-soaking and degreasing reverse port; 412-spray degreasing reverse port; 421-first-stage water washing reverse port; 422-secondary washing reverse opening; 500-a second reverse conveying pipe; 510-blanching and washing the reverse mouth; 600-a filter mechanism; 610 a blowdown line; 620-return line; 630-a filter tank; 631-a filter cloth; 632-a first reel; 633-a second reel; 634-a floating ball; 640-a sludge settling tank; 641-a water collection area; 642-clear water zone; 643-a settling zone; 644-overflow plate; 645-baffle plate; 646-a sludge discharge port; 647-oil drain port; 648-an oil sludge collection tank; 649-a settling pipe; 650-solid waste collecting tank; 700-a venting assembly; 710 a collection hood; 720-exhaust fan; 730-exhaust duct.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Example 1
The embodiment provides a degreasing circulating water recycling system for electrophoretic coating.
As shown in fig. 1, a degreasing circulating water recycling system for electrophoretic coating includes a degreasing area and a rinsing area sequentially arranged along a workpiece conveying direction; the bottom of the degreasing area is provided with a drain outlet 140, the drain outlet 140 is connected with a filtering mechanism 600, and degreasing liquid in the degreasing area flows back into the degreasing area after being filtered by the filtering mechanism 600 from the drain outlet 140; a water inlet is arranged above the water washing area and used for providing clean water into the water washing area; a first reverse conveying pipeline 400 is arranged between the degreasing area and the water washing area, the first reverse conveying pipeline 400 is positioned at the tops of the degreasing area and the water washing area and inclines downwards from the water washing area to the degreasing area, and a degreasing reverse port and a water washing reverse port are formed in the first reverse conveying pipeline 400; the degreasing reverse port is positioned in the degreasing area and faces to the bottom of the degreasing area; the water washing reverse port is positioned in the water washing area and faces to the bottom of the water washing area. In the reverse conveying pipeline, the term "reverse" means that the direction of fluid flow in the pipeline is opposite to the conveying direction of the workpiece; the "bottom" of each of the inverted ports faces downward, as shown in fig. 1. The working process is as follows:
step 1, clear water enters a washing area through a water inlet;
step 2, after the liquid level in the water washing area gradually rises, the water washing liquid at the upper part of the water washing area automatically flows into the degreasing area from a degreasing reverse port through a water washing reverse port through a first reverse conveying pipeline 400;
step 3, allowing the degreasing fluid in the degreasing area to enter a filtering mechanism 600 through a drain outlet 140;
and 4, filtering the degreasing solution by the filtering mechanism 600, and refluxing the reuse water to the degreasing area.
The utility model discloses a reverse transport cooperates with filtering mechanism 600, accomplishes the degrease circulating water reuse of electrophoresis application to realize higher water utilization ratio and better greasy dirt cleaning performance under lower energy consumption.
As a preferred implementation manner of this embodiment, in this embodiment, as shown in fig. 1, the degreasing area includes a spray degreasing area 110 and a soak degreasing area 120, which are sequentially arranged along the workpiece conveying direction; the degreasing reverse port comprises a soaking degreasing reverse port 411 and a spraying degreasing reverse port 412, and the soaking degreasing reverse port 411 is higher than the spraying degreasing reverse port 412 in elevation; the spray degreasing reverse port 412 is positioned in the spray degreasing region 110 and faces the bottom of the spray degreasing region 110; the soaking and degreasing reverse port 411 is positioned in the soaking and degreasing area 120 and faces to the bottom of the soaking and degreasing area 120; in this embodiment, the drain outlet 140 in the spray degreasing region 110 is located at the bottom of the spray degreasing region 110; the degreasing fluid in the spray degreasing area 110 is filtered by the filtering mechanism 600 from the drain outlet 140 and then flows back to the spray degreasing area 110, so that the self-circulation water treatment of the degreasing fluid in the spray degreasing area 110 is realized. In this embodiment, a spray component is arranged in the spray degreasing region 110, and a spray head of the spray component is installed on the inner wall of the tank body of the spray degreasing region 110 and is arranged to spray towards the upper part of the middle part of the spray degreasing region 110; it should be noted that the spray assembly is a common device in the field, and is not specifically limited herein. In this embodiment, a degreasing agent replenishing port is disposed above the soaking and degreasing area 120, and the degreasing agent replenishing port is connected to a degreasing agent replenishing box through a pipeline and is used for supplying a degreasing agent into the soaking and degreasing area 120; the degreasing agent in the embodiment can specifically adopt a mixture of phosphate, silicate and a surface active assistant, and the number of free alkali points is 16-19.
As a preferred embodiment of this embodiment, in this embodiment, a drainage plate 130 is disposed at the bottom of the spray degreasing region 110, and the drainage plate 130 includes an outer drainage plate 131 and an inner drainage plate 132; the drainage outer plate 131 is obliquely arranged towards the center of the bottom along the wall surface of the spray degreasing area 110 to form a slope surface; the drainage inner plate 132 is arranged at the center of the bottom of the spray degreasing area 110 and is in a pyramid or cone shape; the drain outlet 140 is located between the outer drainage plate 131 and the inner drainage plate 132.
As a preferred implementation manner of this embodiment, in this embodiment, as shown in fig. 1, the water washing section includes a primary water washing section 210 and a secondary water washing section 220 that are sequentially arranged along the workpiece conveying direction; the reverse washing port comprises a first-stage reverse washing port 421 and a second-stage reverse washing port 422, and the second-stage reverse washing port 422 is higher than or equal to the first-stage reverse washing port 421 in elevation; the first-stage water washing reverse port 421 is positioned in the first-stage water washing zone 210 and faces the bottom of the first-stage water washing zone 210; the secondary water wash reverse port 422 is located within the secondary water wash zone 220 and is directed toward the bottom of the secondary water wash zone 220.
As a preferred implementation manner of this embodiment, in this embodiment, both the first-stage water-washing section 210 and the second-stage water-washing section 220 are soaking water-washing sections; stirring devices are arranged in the first-stage water washing area 210 and the second-stage water washing area 220 soaking degreasing area 120 and used for stirring liquid so as to improve the oil stain cleaning effect on the surface of the workpiece. The agitating unit in this embodiment can adopt stirring vane to can realize among the prior art the structure of liquid stirring can, and the technical personnel in the field can directly utilize prior art in the field to realize on the basis of understanding the utility model, do not do too much description here.
As a preferred implementation manner of this embodiment, in this embodiment, the water inlet is connected to a clean water tank through a water inlet pipeline, and the clean water tank is higher than the secondary water washing area 220 in elevation; one end of the water inlet pipeline is provided with a water inlet, and the other end of the water inlet pipeline is provided with a water outlet; the water inlet of the water inlet pipeline is positioned in the clear water tank; the water outlet of the water inlet pipeline is positioned in the secondary washing area 220; the water inlet pipeline is provided with a water inlet electromagnetic valve for controlling water inlet. In this embodiment, the spray degreasing area 110 and the soak degreasing area 120 are both provided with level meters, and the level meters are linked with the water inlet solenoid valves, so that the water inlet solenoid valves are controlled to be opened or closed through the levels in the spray degreasing area 110 and the soak degreasing area 120. In this embodiment, the highest value of the target liquid level of the liquid level meter is set to be at the cornices of the spray degreasing area 110 and the soak degreasing area 120, and the lowest value of the target liquid level of the liquid level meter is set to be 20 ± 5cm below the cornices of the spray degreasing area 110 and the soak degreasing area 120; the linked system of the liquid level meter and the water inlet electromagnetic valve in the embodiment is a commonly used linked system in the field, and is conventional prior art. For example, a linkage system with the same principle as that of the solenoid valve of the burkert 8181 duckbill type float liquid level meter can be selected to realize the automatic control of the liquid level.
As a preferable embodiment of this embodiment, in this embodiment, the degreasing circulating water recycling system for electrodeposition coating further includes an air exhaust assembly 700, and the air exhaust assembly 700 includes: the collecting cover 710 is arranged above the degreasing area and used for collecting water vapor generated by the degreasing area; and the exhaust fan 720, wherein the exhaust fan 720 is connected with the collection cover 710 through an exhaust duct 730 and is used for forming negative pressure in the collection cover 710.
As a preferred embodiment of this embodiment, in this embodiment, as shown in fig. 1 and fig. 2, a filter mechanism 600 is connected to the sewage drain 140 through a sewage drain 610, and the filter mechanism 600 includes: a filter tank 630, wherein a filter cloth 631 and a scroll set are arranged in the filter tank 630; the filter cloth 631 is arranged below the pipe orifice of the sewage draining pipeline 610; the scroll group comprises a first scroll 632 and a second scroll 633 which are arranged in parallel, the first scroll 632 is used for reeling the filter cloth 631, and the second scroll 633 is connected with a scroll driving motor and is suitable for enabling the filter cloth 631 to be conveyed from the first scroll 632 to the second scroll 633; the sludge settling tank 640 is positioned below the filtering tank 630, is connected with a water outlet of the filtering tank 630, and is used for separating solid particles and/or grease in the filtrate after being treated by the filter cloth 631; the bottom of the sludge settling tank 640 is provided with a sludge outlet 646 of the sludge settling tank 640, the side wall of the sludge settling tank 640 is provided with a water outlet of the sludge settling tank 640, and the water outlet is connected with a return pipeline 620 and used for returning the degreasing liquid treated by the filtering mechanism 600 to the spraying degreasing area 110 for recycling. Wherein, the material of the filter cloth 631 is oil absorption cotton; a floating ball 634 is arranged above the filter cloth 631, and the floating ball 634 is linked with a scroll driving motor of the scroll group. The floating ball-scroll driving motor linkage system in this embodiment is a common linkage system in this field, for example, a motor matching with LMA-BANNA floating ball type liquid level switch and DELACHAUX motor driven scroll may be selected, when the filtering speed of the filter cloth 631 is reduced due to the saturation of the filtering, the liquid level above the filter cloth 631 rises, the floating ball 634 is driven to move upwards, the floating ball 634 triggers the magnetic spring switch in the detection rod, a signal is sent out to operate the scroll driving motor, and the filter cloth 631 is driven to be conveyed from the first scroll 632 to the second scroll 633.
As a preferred embodiment of the present embodiment, in the present embodiment, the filter mechanism 600 further includes a grid horizontally disposed below the filter cloth 631 for providing horizontal support for the filter cloth 631 between the first reel 632 and the second reel 633.
As a preferred implementation manner of this embodiment, in this embodiment, the filtering mechanism 600 further includes a solid waste collecting tank 650, and the solid waste collecting tank 650 is disposed at one side of the second roller 633 and is used for collecting the filter cloth 631 conveyed by the second roller 633.
As a preferred embodiment of this embodiment, in this embodiment, the sludge settling tank 640 includes a water collecting area 641, a clear water area 642, and three adjacent settling areas 643 between the water collecting area 641 and the clear water area 642; the bottom of the filter tank 630 is obliquely arranged from one side to the other side of the tank wall of the filter tank 630, the included angle between the bottom of the filter tank 630 and the tank wall of the filter tank 630 is 45-80 degrees, and the lowest position of the oblique tank bottom is a water outlet of the filter tank 630; the water inlet of the water collecting area 641 is the water inlet of the sludge settling tank 640, and is communicated with the water outlet of the filter tank 630; the side wall of the clean water area 642 is provided with a water outlet of a sludge settling tank 640; the adjacent water collecting area 641, the clean water area 642 and the settling area 643 are separated by a partition plate group, the partition plate group consists of an overflow plate 644 and a flow baffle 645, and the flow baffle 645 and the overflow plate 644 are arranged in parallel; the overflow plate 644 is positioned on the side of the water inlet close to the sludge settling tank 640; the baffle 645 is positioned at the side close to the water outlet of the sludge settling tank 640; one end of the flow baffle 645 is fixed on the top of the sludge settling tank 640, and the other end is lower than the top end of the overflow plate 644. A sludge discharge opening 646 is formed at the bottom of the water collecting area 641; a settling pipe 649 is vertically arranged in the middle of the settling area 643, a sludge discharge port 646 is arranged at the lower part of the settling pipe 649, an oil discharge port 647 is arranged at the upper part of the settling pipe 649, and the height of the oil discharge port 647 is slightly higher than the height of the top end of the overflow plate 644.
As a preferred embodiment of this embodiment, in this embodiment, a sludge collection tank 648 is further provided below the sludge settling tank 640, and the sludge collection tank 648 is respectively communicated with a sludge discharge port 646 at the bottom of the water collection tank, a sludge discharge port 646 at the bottom of the settling tank, and an oil discharge port 647 at the upper part of the settling zone 643 through pipes; the bottom of the sludge collection tank 648 is communicated to the solid waste collection tank 650 through a pipeline. In this embodiment, a suction pump is installed on a pipeline between the sludge collection tank 648 and the oil drain port 647 and the sludge drain port 646, and is used for sucking grease and solid particles into the sludge collection tank 648; meanwhile, a valve is also arranged on a pipeline between the sludge collecting tank 648 and the sludge discharge port 646 and the oil discharge port 647. In this embodiment, a water pump is installed on a pipeline between the sludge collection tank 648 and the solid waste collection tank 650, and is used for conveying the sludge in the sludge collection tank 648 to the solid waste collection tank 650.
As a preferred embodiment of this embodiment, in this embodiment, the filtering mechanism 600 is connected to the drain outlet 140 disposed at the bottom of the spray degreasing zone 110 through the drain pipe 610, and is used for treating the degreasing solution discharged from the bottom of the spray degreasing zone 110, and after the solid particles and grease in the degreasing solution are removed by the filtering mechanism 600, the degreasing solution flows back to the spray degreasing zone 110 again, as shown in fig. 2, the filtering mechanism 600 further includes a ceramic membrane filter, and the ceramic membrane filter is mounted on the drain pipe 610; the water inlet of the ceramic membrane filter is communicated with the drain outlet 140 at the bottom of the spray degreasing area 110, and the water outlet of the ceramic membrane filter is communicated with the water inlet of the filter tank 630. The ceramic membrane filter has a back-washing function.
The operation of the filter mechanism 600 of this embodiment is as follows:
step 1, degreasing fluid to be treated flows into a filter tank 630 from a drain outlet 140 at the bottom of spray degreasing through a drain pipeline 610;
step 2, filtering the degreasing solution in the step 1 by using filter cloth 631 in the filter tank 630 to primarily remove solid particles and grease in the degreasing solution to obtain a filtrate; during filtering, a floating ball 634 mounted above the filter cloth 631 controls the reel driving motor in a linkage manner, so that the filter cloth 631 is conveyed from the first reel 632 to the second reel 633;
step 3, the filtrate treated in the step 2 flows into the water collecting area 641 below the filter tank 630 from the inclined tank bottom, and solid particles in the water collecting area 641 are discharged from a sludge discharge port 646 at the bottom of the water collecting area 641;
and 5, the filtrate treated in the settling zone 643 in the step 4 flows into the clean water zone 642 from the settling zone 643 through the partition plate group to obtain reuse water, and the reuse water flows back to the spray degreasing zone 110 through the return pipe 620 on the side wall of the clean water zone 642.
In the step 5, the water pump is installed on the return pipe 620, and is used for conveying the reuse water in the clean water area 642 to the spray degreasing area 110 and/or the blanching area 300.
In this embodiment, the degreasing circulating water recycling system for electrophoretic coating further includes a conveying chain, a fixing mechanism for fixing the workpiece is disposed on the conveying chain, and the workpiece is driven by the conveying chain to sequentially pass through the spray degreasing area 110, the soak degreasing area 120, the primary water washing area 210 and the secondary water washing area 220 to clean and remove oil stains on the surface of the workpiece; wherein, in the soaking and degreasing area 120, the first-stage water washing area 210 and the second-stage water washing area 220, the conveying track of the conveying chain is in an inverted trapezoid with an upward opening. The fixing mechanism in this embodiment can adopt a clamping mechanism, and the structure that can realize workpiece clamping in the prior art can be realized, and the technical personnel in the field can directly use the prior art in the field to realize the fixing mechanism on the basis of understanding the utility model, and the description is not needed.
The working process of the degreasing circulating water recycling system for electrophoretic coating of the embodiment is as follows:
step 1, a water inlet electromagnetic valve on a water inlet pipeline is opened, and clean water enters a secondary washing area 220 through the water inlet pipeline;
step 2, the water washing liquid in the secondary water washing area 220 automatically flows into the primary water washing area 210 from the primary water washing reversing port 421 through the secondary water washing reversing port 422 and the first reversing conveying pipeline 400;
step 3, the water washing liquid in the first-stage water washing area 210 automatically flows into the soaking and degreasing area 120 from the soaking and degreasing reverse port 411 through the first reverse conveying pipeline 400 through the first-stage reverse washing port 421;
step 5, the degreasing fluid in the spray degreasing area 110 automatically flows into the filtering mechanism 600 through a drain outlet 140 at the bottom of the spray degreasing area 110 through a drain pipeline 610;
step 6, the filter mechanism 600 reflows the treated reuse water to the spray degreasing area 110 through a reflow pipeline 620;
and 7, under the drive of the conveying chain, the workpiece sequentially passes through the spray degreasing area 110, the soak degreasing area 120, the first-stage water washing area 210 and the second-stage water washing area 220 to be subjected to oil stain cleaning.
Wherein, when the degreasing circulating water recycling system for electrophoretic coating of the utility model runs for a certain time, the steps 1-7 are carried out simultaneously.
Example 2
The embodiment provides a degreasing circulating water recycling system for electrophoretic coating.
The degreasing circulating water recycling system for electrocoating of the present example is further provided with a blanching area 300 on the basis of example 1.
As shown in fig. 3, the bottom of the scalding area 300 is provided with a drain outlet 140, the drain outlet 140 in the scalding area 300 is connected to the filtering mechanism 600 in embodiment 1, and the scalding liquid in the scalding area 300 flows back to the scalding area 300 after being processed by the filtering mechanism 600 from the drain outlet 140; a second reverse conveying pipeline 500 is arranged between the hot washing area 300 and the degreasing area; the second reverse conveying pipeline 500 is downwards inclined from the degreasing area to the hot washing area 300, and the upper end of the second reverse conveying pipeline 500 is communicated with the lower end of the first reverse conveying pipeline 400; the second reverse conveying pipeline 500 is provided with a hot-washing reverse port 510, and the hot-washing reverse port 510 is located in the hot-washing area and faces the bottom of the hot-washing area 300.
In this embodiment, the second reverse conveying pipeline 500 and the first reverse conveying pipeline 400 are integrated, and the second reverse conveying pipeline 500 and the first reverse conveying pipeline 400 are inclined downward from the secondary water washing area 220 to the hot scalding area 300.
In this embodiment, the hot washing area 300 is a soaking hot washing area.
As a preferred embodiment of this embodiment, in this embodiment, the bottom of the hot washing area 300 is provided with a drainage plate 130, and the drainage plate 130 in the hot washing area 300 includes an outer drainage plate 131 and an inner drainage plate 132; the drainage outer plate 131 is obliquely arranged towards the center of the bottom along the wall surface of the hot washing area 300 to form a slope surface; the inner drainage plate 132 is arranged at the center of the bottom of the hot washing area 300 and is in a pyramid or cone shape; the drain outlet 140 in the blanching area 300 is positioned between the outer drainage plate 131 and the inner drainage plate 132.
As a preferred implementation manner of this embodiment, in this embodiment, a liquid level meter is disposed in the hot washing area 300, and the liquid level meter is linked with the water inlet solenoid valve, so as to control the opening or closing of the water inlet solenoid valve through the liquid level in the hot washing area 300. In this embodiment, the highest value of the target liquid level of the liquid level meter is set to be at the cornice of the hot-washing area 300, and the lowest value of the target liquid level of the liquid level meter is set to be 20 +/-5 cm below the cornice of the hot-washing area 300; the linked system of the liquid level meter and the water inlet electromagnetic valve in the embodiment is the same as that in the embodiment 1.
In the present embodiment, as a preferred embodiment of the present embodiment, a collecting hood 710 is disposed above the hot washing area 300, and the collecting hood 710 is communicated with the exhaust duct 730 in embodiment 1.
The working process of the degreasing circulating water recycling system for electrophoretic coating of the embodiment is as follows:
step 1, a water inlet electromagnetic valve on a water inlet pipeline is opened, and clean water enters a secondary washing area 220 through the water inlet pipeline;
step 2, the water washing liquid in the secondary water washing area 220 automatically flows into the primary water washing area 210 from the primary water washing reversing port 421 through the secondary water washing reversing port 422 and the first reversing conveying pipeline 400;
step 3, the water washing liquid in the first-stage water washing area 210 automatically flows into the soaking and degreasing area 120 from the soaking and degreasing reverse port 411 through the first reverse conveying pipeline 400 through the first-stage reverse washing port 421;
step 5, the degreasing liquid in the spray degreasing area 110 automatically flows into the hot washing area 300 from the hot washing reverse port 510 through the spray degreasing reverse port 412 through the first reverse conveying pipeline 400;
step 6, the degreasing fluid in the spray degreasing area 110 automatically flows into the filtering mechanism 600 through the drain outlet 140 at the bottom of the spray degreasing area 110 and the drain pipeline 610, and the scalding fluid in the blanching area 300 automatically flows into the filtering mechanism 600 through the drain outlet 140 at the bottom of the blanching area 300 and the drain pipeline 610;
step 7, the filter mechanism 600 reflows the treated reuse water to the spray degreasing area 110 and the hot washing area 300 through a reflow pipeline 620;
and 8, under the drive of the conveying chain, the workpiece sequentially passes through the hot washing area 300, the spraying degreasing area 110, the soaking degreasing area 120, the first-stage water washing area 210 and the second-stage water washing area 220 to be subjected to oil stain cleaning.
Wherein, when the utility model discloses a degreasing circulating water recycling system of electrophoresis application operates after the certain time, above-mentioned step 1-8 goes on simultaneously.
Example 3
The embodiment provides a degreasing circulating water recycling system for electrophoretic coating.
The difference between the degreasing circulating water recycling system of the electrocoating of this embodiment and embodiment 2 is that the blanching region 300 and the spray degreasing region 110 are respectively connected to a filter mechanism 600. (the structure of the filter mechanism in this embodiment is the same as that of the filter mechanisms in embodiments 1 and 2)
In this embodiment, the filtering mechanism 600 connected to the drain outlet 140 at the bottom of the scalding washing area 300 is only used for treating the scalding liquid discharged at the bottom of the scalding washing area 300, and in this embodiment, the filtering mechanism 600 connected to the drain outlet 140 at the bottom of the spray degreasing area 110 is only used for treating the degreasing liquid discharged at the bottom of the spray degreasing area 140. This embodiment compares and to improve filtration efficiency in embodiment 2 to promote respectively the hot washing district and spray the backward flow quality of water in degrease district.
Experimental examples of Effect
Implementation objects are as follows: the system for recycling degreased circulating water for electrodeposition coating of example 3.
Experimental parameters: the temperature of the degreased liquid in the hot washing area is 40 +/-5 ℃, and the soaking time is 6-9 min; the temperature of the degreasing fluid in the spray degreasing area is 40 +/-5 ℃, the spray pressure is 0.1-0.2Mpa, and the spray time is 1-2 min; the alkalinity of the degreasing fluid in the soaking and degreasing area is 16-19 points, the temperature is 40 +/-5 ℃, and the soaking time is 6-9 min; the temperature of clear water in the first-stage water washing area is normal temperature, and the soaking time is 1 plus or minus 0.5 min; the temperature of clear water in the secondary water washing area is normal temperature, and the soaking time is 1 plus or minus 0.5 min;
and (3) test results: after the workpiece sequentially passes through the hot-washing area, the spraying degreasing area, the soaking degreasing area, the first-stage water washing area and the second-stage water washing area, the alkalinity of residual liquid on the surface of the workpiece is tested to be less than 3 points, and the workpiece is free of oil stains. The test results show that the degreasing circulating water recycling system for electrophoretic coating of example 3 has a good oil stain cleaning effect.
The present invention has been described in detail with reference to the specific embodiments, but the present invention is only by way of example and is not limited to the specific embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are intended to be within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.
Claims (10)
1. The degreasing circulating water recycling system for electrophoretic coating is characterized by comprising a degreasing area and a water washing area which are sequentially arranged along the conveying direction of a workpiece;
a drain outlet is formed in the bottom of the degreasing area and connected with a filtering mechanism, and degreasing liquid in the degreasing area flows back into the degreasing area after being filtered by the filtering mechanism from the drain outlet;
a water inlet is arranged above the washing area and used for providing clean water into the washing area;
a first reverse conveying pipeline is arranged between the degreasing area and the water washing area, is positioned at the tops of the degreasing area and the water washing area and inclines downwards from the water washing area to the degreasing area, and is provided with a degreasing reverse port and a water washing reverse port; the degreasing reverse port is positioned in the degreasing area and faces to the bottom of the degreasing area; the water washing reverse port is positioned in the water washing area and faces to the bottom of the water washing area.
2. The degreasing circulating water recycling system for electrocoating according to claim 1, wherein the degreasing region includes a spray degreasing region and a soak degreasing region which are sequentially arranged in a workpiece conveying direction;
the degreasing reverse port comprises a soaking degreasing reverse port and a spraying degreasing reverse port, and the soaking degreasing reverse port is higher than the spraying degreasing reverse port in elevation;
the spray degreasing reverse port is positioned in the spray degreasing area and faces the bottom of the spray degreasing area;
the soaking and degreasing reverse port is positioned in the soaking and degreasing area and faces to the bottom of the soaking and degreasing area.
3. The electrocoated degreasing circulating water recycling system according to claim 2, wherein a drainage plate is arranged at the bottom of the spray degreasing zone, and the drainage plate comprises an outer drainage plate and an inner drainage plate; the drainage outer plate is obliquely arranged towards the center of the bottom along the wall surface of the spray degreasing area to form a slope surface; the drainage inner plate is arranged at the center of the bottom of the spray degreasing area and is in a pyramid or cone shape;
the drain is located between the drainage outer plate and the drainage inner plate.
4. The electrocoated degreasing circulating water recycling system as claimed in claim 2, wherein stirring devices are provided in the water washing zone and the immersion degreasing zone.
5. The degreasing circulating water recycling system for electrocoating according to claim 1, wherein the water washing section includes a primary water washing section and a secondary water washing section which are sequentially provided along a workpiece conveying direction;
the water washing reverse port comprises a primary water washing reverse port and a secondary water washing reverse port, and the secondary water washing reverse port is higher than or equal to the primary water washing reverse port in elevation;
the first-stage water washing reverse port is positioned in the first-stage water washing area and faces the bottom of the first-stage water washing area;
the second-stage water washing reverse port is positioned in the second-stage water washing area and faces to the bottom of the second-stage water washing area.
6. The electrocoated degreasing circulating water recycling system of claim 5, wherein the water inlet is connected to a clean water tank through a water inlet pipe, the clean water tank being higher in elevation than the secondary water washing zone;
one end of the water inlet pipeline is provided with the water inlet, and the other end of the water inlet pipeline is provided with the water outlet; the water inlet is positioned in the clear water tank; the water outlet is positioned in the secondary washing area;
the water inlet pipeline controls water inlet through an electromagnetic valve.
7. The electrocoated degreasing circulating water recycling system of claim 1, further comprising an air exhaust assembly, the air exhaust assembly comprising:
the collecting cover is arranged above the degreasing area and used for collecting water vapor generated by the degreasing circulating water recycling system for electrophoretic coating;
and the exhaust fan is connected with the collecting cover through an exhaust pipeline and is used for forming negative pressure in the collecting cover.
8. The degreasing circulating water recycling system for electrocoating according to claim 1, further comprising a hot-washing area, wherein a drain outlet is formed in the bottom of the hot-washing area, the drain outlet is connected with a filtering mechanism, and a hot-washing liquid in the hot-washing area flows back into the hot-washing area after being filtered by the filtering mechanism from the drain outlet;
a second reverse conveying pipeline is arranged between the hot washing area and the degreasing area; the second reverse conveying pipeline inclines downwards from the degreasing area to the hot washing area, and the upper end of the second reverse conveying pipeline is communicated with the lower end of the first reverse conveying pipeline;
the second reverse conveying pipeline is provided with a hot-ironing washing reverse port, and the hot-ironing washing reverse port is located in the hot-ironing washing area and faces the bottom of the hot-ironing washing area.
9. The degreasing circulation water recycling system according to any one of claims 1 to 8, wherein the filter mechanism is connected to the drain outlet through a drain pipe, the filter mechanism comprising:
the filter tank is internally provided with filter cloth and a scroll set; the filter cloth is arranged below the pipe orifice of the sewage discharge pipeline; the scroll group comprises a first scroll and a second scroll which are arranged in parallel, the first scroll is used for reeling the filter cloth, and the second scroll is connected with a scroll driving motor and is suitable for conveying the filter cloth to the second scroll from the first scroll;
the sludge settling tank is connected with the filter tank, is positioned below the filter tank and is used for separating solid particles and/or grease in the filtrate treated by the filter cloth; the bottom of the sludge settling tank is provided with a sludge discharge port, and the side wall of the sludge settling tank is connected with a return pipeline.
10. The electrocoated degreasing circulating water recycling system of claim 9, wherein the filter mechanism further comprises a ceramic membrane filter, the ceramic membrane filter being located on the blowdown line; and the water outlet of the ceramic membrane filter is communicated with the water inlet of the filter tank through the sewage discharge pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921379022.8U CN210560838U (en) | 2019-08-22 | 2019-08-22 | Degreasing circulating water recycling system for electrophoretic coating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921379022.8U CN210560838U (en) | 2019-08-22 | 2019-08-22 | Degreasing circulating water recycling system for electrophoretic coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114622212A (en) * | 2022-03-01 | 2022-06-14 | 佛山市三水凤铝铝业有限公司 | Aluminum profile surface treatment method |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114622212A (en) * | 2022-03-01 | 2022-06-14 | 佛山市三水凤铝铝业有限公司 | Aluminum profile surface treatment method |
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