CN116329166A - Electrophoretic coating washing equipment - Google Patents

Abstract

The invention discloses electrophoretic coating water washing equipment, which relates to the technical field of electrophoretic coating and comprises a frame, a box body, a water delivery mechanism, a conveying mechanism, a recovery mechanism and a control module, wherein the box body consists of a water storage box, a cleaning box and a recovery box, which are respectively erected on the frame, the water delivery mechanism is arranged on the water storage box and the cleaning box in a penetrating way, the conveying mechanism is arranged in the cleaning box, the recovery mechanism is arranged in the recovery box, and the control module is respectively electrically connected with the water delivery mechanism, the conveying mechanism and the recovery mechanism; the water delivery mechanism sequentially comprises a water collection barrel, a water suction pipe, a main valve, a first water pump, a main water delivery pipe, two secondary water delivery pipes with different heights and two spraying components; the conveying mechanism comprises a servo motor, two main driving shafts and a plurality of roller assemblies. The invention can realize the combination of two water washing modes of immersing and washing and spraying water washing of the electrophoresis workpiece, and further improves the efficiency and quality of electrophoresis water washing.

Description

An electrophoretic coating washing equipment

technical field

The invention relates to the technical field of electrophoretic coating, in particular to water washing equipment for electrophoretic coating.

Background technique

Electrophoretic coating is a coating method that uses an external electric field to make the particles such as pigments and resins suspended in the electrophoretic liquid directional migrate and deposit on the surface of the substrate of one of the electrodes. The electrophoretic coating production line is to immerse the object to be coated in the water-soluble paint as the anode (anodic electrophoresis), and set up a corresponding cathode, and pass direct current between the two electrodes, relying on the physical and chemical effects generated by the current to make the paint evenly coated A coating technique on the object to be coated.

The process flow of electrophoretic coating on the metal surface is roughly: pre-cleaning → on-line → degreasing → water washing → rust removal → water washing → neutralization → water washing → phosphating → water washing → passivation → electrophoretic coating → cleaning on the tank → ultrafiltration water washing →drying→offline. It can be seen the importance of the washing process in the whole process. The contents to be cleaned in the electrophoretic coating washing process mainly include a large amount of solid waste residues and flocs such as massive metal chips and metal rust residues, as well as a large amount of various types of oil.

At present, there are two washing methods: immersion washing and spraying. The two washing methods have their own advantages and disadvantages. The current washing equipment is also an improvement of these two washing methods. Immersion washing can ensure that the surface of the workpiece is soaked in all aspects, and the cleaning is more comprehensive, but when the surface is out of the water body, the impurities flowing in the water will be attached to the surface; the spraying method can effectively avoid the adhesion of impurities in the water, just spray The shower is limited by the water flow path and the shape of the workpiece, so the flushing is not comprehensive.

Contents of the invention

The purpose of the present invention is to provide an electrophoretic coating water washing equipment to solve the problems raised in the above background technology.

In order to solve the above technical problems, the present invention provides the following technical solutions: including a frame, a box body, a water delivery mechanism, a delivery mechanism, a recovery mechanism and a control module, wherein the box body is composed of a water storage tank, a cleaning box and a recovery box, respectively Erected on the frame, the water delivery mechanism is installed on the water storage tank and the cleaning box, the delivery mechanism is installed in the cleaning box, the recovery mechanism is installed in the recovery box, and the control module is connected with the water delivery mechanism and the delivery mechanism respectively. Electrically connected to the recycling mechanism.

Further, the water delivery mechanism sequentially includes a water collection bucket, a water suction pipe, a main valve, a first water pump, a main water delivery pipe, two secondary water delivery pipes of different heights, and two spray assemblies, wherein one end of the water collection bucket is connected to the storage tank. The other end of the water tank is connected to the water pipe, the main valve is installed on the water pipe, the inlet of the first water pump is connected to the water pipe, the outlet is connected to the main water pipe, and the main water pipe is respectively connected to two secondary water pipes. One end of the shower assembly is installed on the output end of the corresponding secondary water delivery pipe, and the other end can be fixed on the inner wall of the cleaning box through a structure such as a support frame to improve stability.

Further, the secondary water delivery pipe is provided with a first valve and a hydraulic gauge, wherein the first valve is suitable for controlling the water circulation of the secondary water delivery pipe, and can be a manual valve (manually controlled) or an electric valve (controlled by the module) control); the hydraulic gauge is suitable for monitoring the hydraulic pressure in the secondary water delivery pipe.

Further, the spray assembly includes two water outlet pipes and several spray heads arranged on the water outlet pipes, and the spray assembly located at a high place is suitable for covering with a water cover to avoid water splashing to the outside when spraying as much as possible. Condition.

Further, the conveying mechanism includes a servo motor, two main drive shafts, and several roller assemblies, wherein the servo motor is connected to one main drive shaft, each roller assembly is erected between the two main drive shafts, and the main drive The shaft is fixed in the cleaning box through the fixing plate, and the main drive shaft is connected and matched with the roller assembly and each roller assembly through but not limited to gear transmission.

Further, the recovery mechanism includes a recovery pipe and a water pump connected thereto, wherein the recovery pipe communicates with the interior of the cleaning tank.

Further, the two sides of the cleaning box are provided with airtight doors corresponding to the conveying mechanism, and the upper side is provided with a visible window, wherein the airtight door is an electronically controlled door, and its opening and closing is controlled by the control module.

Further, the specific method is as follows:

S1. Transportation: The control module opens the sealed door on one side, and at the same time starts the conveying mechanism to rotate in the opposite direction to the opened sealed door, thereby driving the workpieces fed in from the sealed door to move inside the cleaning box. After the workpieces reach the predetermined position, the conveying mechanism closes stop, the control module controls the sealing door to close, and the cleaning box is a relatively closed space.

S2. Immersion in water washing: the control module sends a start command to the first water pump, and the water in the water storage tank passes through the water collecting bucket, the water suction pipe, the main valve, and the first water pump in sequence, and is sent from the main water supply pipe to the low-level secondary water supply pipe. The corresponding first valve is in the open state, the first valve corresponding to the high position is in the closed state, and finally the low position spray assembly is input to the inside of the cleaning tank, and the control module drives the water delivery mechanism to deliver a certain amount of water into the cleaning tank ( without workpieces to be cleaned).

S3. Spray water washing: After the workpiece is immersed in the water body, the control module immediately drives the recovery mechanism to start pumping and draining the water in the cleaning box, and at the same time controls the start of the water delivery mechanism, and the two first valves are opened at the same time. Carry out spraying operation (pumping drainage flow rate is much greater than spraying water flow rate).

S4. Sending after washing: After the spraying is finished, the control module opens the sealed doors on both sides, and receives a new batch of workpieces to be cleaned while sending out the cleaned workpieces.

S5. Repeat steps S1 to S4 to complete the water washing operation.

Further, on the basis of the above content, an auxiliary water washing assembly is added, including a shunt pipe, a second water pump and a second valve, wherein one end of the shunt pipe is connected to the recovery pipe, and the other end is passed through the cleaning tank. The second water pump Installed on the shunt pipe, the second valve is installed on the recovery pipe.

Further, the shunt pipe is provided with a filter layer and an oil-repellent layer on the input side of the second water pump.

Compared with the prior art, the beneficial effects achieved by the present invention are: the combination of immersion washing and spray washing of the electrophoretic workpiece can be realized by setting the water supply mechanism, the recovery mechanism and the control module, and the control module calculates according to the volume of the built-in cleaning box The sum of the amount of water to be injected, the low-order water delivery pipe channel of the water delivery mechanism sends water, and the submerged washing is realized after the water injection volume reaches the standard, and then the recovery mechanism is started and the high-order water delivery pipe channel of the water delivery mechanism is sent water, and the immersion washing is adjusted to spray water washing. The combination of three washing methods effectively improves the washing efficiency and quality. By setting up the auxiliary water washing component, the water body in the cleaning tank is stirred during the water injection process of immersion washing, and the circulating water can further take away the impurities attached to the surface of the workpiece. At the same time, the auxiliary water washing component can help to Rinse the impurities attached to the upper surface of the workpiece to improve the quality of washing.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is a schematic diagram of the water delivery mechanism of the present invention;

Fig. 3 is a partial schematic view of the present invention;

Fig. 4 is a schematic diagram of the delivery mechanism of the present invention;

Fig. 5 is a partial side view of the present invention;

Fig. 6 is a schematic diagram of the auxiliary water washing assembly of the present invention;

In the figure: 1, frame; 2, box body; 21, water storage tank; 22, cleaning box; 221, sealed door; 222, visible window; 23, recovery box; 3, water delivery mechanism; 31, water collection bucket; , suction pipe; 33, main valve; 34, first water pump; 35, main water delivery pipe; 36, secondary water delivery pipe; 361, first valve; 362, hydraulic gauge; 37, spray assembly; 371, water outlet pipe; 372 , nozzle; 4, conveying mechanism; 41, servo motor; 42, main drive shaft; 43, roller assembly; 5, recovery mechanism; 51, recovery pipe; 52, water pump; 6, waterproof cover; 7, deflector; 8. Auxiliary water washing component; 81, shunt pipe; 811, filter layer; 812, oleophobic layer; 82, second water pump; 83, second valve.

Detailed ways

The technical solution of the present invention will be described in further non-limiting detail below in combination with preferred embodiments and accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment 1, please refer to Figures 1-5, the present invention provides a technical solution: an electrophoretic coating washing equipment, including a frame 1, a box body 2, a water delivery mechanism 3, a delivery mechanism 4, a recovery mechanism 5 and a control module, wherein The box body 2 is composed of a water storage tank 21, a cleaning tank 22 and a recovery tank 23, which are installed on the frame 1 respectively. The water delivery mechanism 3 is installed on the water storage tank 21 and the cleaning tank 22. Inside, the recovery mechanism 5 is installed in the recovery box 23, and the control module is electrically connected with the water delivery mechanism 3, the delivery mechanism 4 and the recovery mechanism 5 respectively.

The water delivery mechanism 3 sequentially includes a water collection bucket 31, a water suction pipe 32, a main valve 33, a first water pump 34, a main water delivery pipe 35, two secondary water delivery pipes 36 of different heights, and two spray assemblies 37, wherein one end of the water collection bucket 31 It is connected to the water storage tank 21, and the other end is connected to the suction pipe 32. The main valve 33 is installed on the suction pipe 32. The inlet of the first water pump 34 is connected to the suction pipe 32, and the outlet is connected to the main water delivery pipe 35. The main water delivery pipe 35 is respectively connected to two Secondary water delivery pipe 36, one end of each spray assembly 37 is installed on the output end of corresponding secondary water delivery pipe 36, and the other end can be fixed on the inner wall of cleaning box 22 by structures such as support frame to improve stability.

The secondary water delivery pipe 36 is provided with a first valve 361 and a hydraulic gauge 362, wherein the first valve 361 is suitable for controlling the water flow of the secondary water delivery pipe 36, and can be a manual valve (manually controlled) or an electric valve (controlled by a control module) ; The hydraulic gauge 362 is suitable for monitoring the hydraulic pressure in the secondary water delivery pipe 36 .

The spray assembly 37 includes two water outlet pipes 371 and several shower heads 372 arranged on the water outlet pipes 371. The spray assembly 37 located at a high place is suitable for covering with a water cover 6 to avoid water splashing to the outside when spraying as much as possible. Case.

The conveying mechanism 4 comprises a servo motor 41, two main drive shafts 42, and several roller assemblies 43, wherein the servo motor 41 is connected with a main drive shaft 42, and each roller assembly 43 is erected between the two main drive shafts 42. The driving shaft 42 is fixed in the cleaning box 22 through the fixing plate, and the main driving shaft 42 is connected with the roller assembly 43 and each roller assembly 43 through but not limited to gear transmission. It should be added that the servo motor 41 is connected outside the cleaning box 22 and is suitable for driving the connected main drive shaft 42 to rotate to drive the roller assembly 43 to rotate synchronously.

The recovery mechanism 5 includes a recovery pipe 51 and a water pump 52 connected thereto, wherein the recovery pipe 51 communicates with the interior of the cleaning tank 22 .

The two sides of the cleaning box 22 are provided with airtight doors 221 corresponding to the conveying mechanism 4, and the upper side is provided with a visible window 222, wherein the airtight door 221 is an electric control door, and its opening and closing is controlled by the control module.

The specific implementation is as follows:

S1. Transportation: the control module opens the sealed door 221 on one side, and at the same time starts the conveying mechanism 4 to rotate in the opposite direction to the opened sealed door 221, thereby driving the workpieces sent from the sealed door 221 to move inside the cleaning box 22, and the workpieces reach the predetermined position Finally, the conveying mechanism 4 is shut down, the control module controls the sealing door 221 to close, and the cleaning box 22 is a relatively closed space.

S2, immersion in water washing: the control module sends a starting command to the first water pump 34, and the water in the water storage tank 21 passes through the water collecting bucket 31, the water suction pipe 32, the main valve 33, and the first water pump 34 in sequence, and is sent from the main water supply pipe 35 to the The secondary water supply pipe 36 at the low position, the first valve 361 corresponding to the low position is in the open state, the first valve 361 corresponding to the high position is in the closed valve state, and finally the spray assembly 37 at the low position is input to the inside of the cleaning tank 22, and the control module Drive the water delivery mechanism 3 to deliver a certain amount of water in the cleaning box 22 (the workpieces that need to be cleaned have not been crossed).

S3. Spray water washing: After the workpiece is immersed in the water body, the control module immediately drives the recovery mechanism 5 to start pumping and draining the water in the cleaning box 22, and at the same time controls the water delivery mechanism 3 to start, and the two first valves 361 are opened at the same time, and the high and low position spray components 37 Spray the upper and lower surfaces of the workpiece (the pumping and drainage flow rate is much greater than the spraying water flow rate).

S4. Sending out after washing: After the spraying is finished, the control module opens the sealed doors 221 on both sides, and receives a new batch of workpieces to be cleaned while sending out the cleaned workpieces.

S5. Repeat steps S1 to S4 to complete the water washing operation.

Specifically, the purpose of rinsing after electrophoresis in S2 and S3 is to rinse off the floating paint on the surface of the electrophoretic paint film, so as to prevent the paint film from being disfigured, and at the same time prevent the adhering floating paint from re-dissolving the paint film. The final flushing should be completed within 1 minute, and the thorough flushing of the workpiece should be within 3 minutes. After a long time, the paint film will dry out and affect the quality of the paint film. Washing water includes ultrafiltration water washing and deionized water washing. At the same time, it should be noted that the pH of the cleaning water is in the neutral range. Improper pH may cause the paint film to dissolve.

In S2, the total input amount of water immersed in water for washing is set according to the actual volume of the cleaning tank 22, generally not exceeding 2/3 of the total volume (1m ³ =1t). . A deflector 7 may be provided in the cleaning box 22 to help the recovery mechanism 5 drain water.

For the cleaning time of the workpiece, the soaking time: it will come out immediately after immersion, and the time should not be too long; the spraying time: 10-30s is enough.

For the defoaming problem, the cleaning solution is prone to generate bubbles during spray cleaning. The reason for foaming is that the cleaning fluid itself has the characteristics of easy foaming, the drop is too high or the spraying effect. If the injection pressure is too high to cause foaming, it should be adjusted between (0.5～1.2)*10 ⁵ Pa (1MPa=10 ⁶ ).

Filters are preferably installed on the first water pump 34 and the spray nozzle 372 to ensure cleaning quality.

Example 2

As shown in Figure 6, on the basis of Embodiment 1, an auxiliary water washing assembly 8 is added, including a shunt pipe 81, a second water pump 82, and a second valve 83, wherein one end of the shunt pipe 81 is connected to the recovery pipe 51, and the other end is passed through On the cleaning box 22 , the second water pump 82 is installed on the distribution pipe 81 , and the second valve 83 is installed on the recovery pipe 51 . It should be added that the second water pump 82 and the second valve 83 are controlled by the control module, the end of the shunt pipe 81 connected to the recovery pipe 51 should be set lower than the second valve 83, and the end connected to the cleaning tank 22 should be higher than the second valve 83. Set on the conveying mechanism 4.

The distribution pipe 81 is provided with a filter layer 811 and an oil-repellent layer 812 on the input side of the second water pump 82 .

In actual operation, S2 is immersed in the process of washing with water. During the process of sending water to the cleaning tank 22 by the water delivery mechanism 3, the control module closes the second valve 83 and starts the second water pump 82 at the same time to extract the water in the cleaning tank 22. The filter layer 811 and the oleophobic layer 812 in the shunt pipe 81 are filtered and flowed back into the cleaning tank 22. This step aims to stir the water body in the cleaning tank 22 to improve the washing efficiency (the active water is more likely to take away the surface impurities). In the process of spraying and washing with water in S3 , the control module turns off the second water pump 82 and turns on the second valve 83 .

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. The orientation or positional relationship is only for the convenience of describing the present invention, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features and these modifications Or replacement, does not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. An electrophoretic coating water washing device is characterized in that: including frame (1), box (2), delivery mechanism (3), conveying mechanism (4), recovery mechanism (5) and control module, wherein box (2) comprises water storage tank (21), clean case (22) and recovery case (23), erects respectively on frame (1), delivery mechanism (3) wear to establish on water storage tank (21) and clean case (22), conveying mechanism (4) are installed in clean case (22), recovery mechanism (5) are installed in recovery case (23), and control module is connected with delivery mechanism (3), conveying mechanism (4) and recovery mechanism (5) electricity respectively.

2. An electrocoating water washing apparatus as claimed in claim 1, wherein: the water delivery mechanism (3) sequentially comprises a water collection barrel (31), a water suction pipe (32), a main valve (33), a first water pump (34), a main water delivery pipe (35), two secondary water delivery pipes (36) with different heights and two spraying components (37), wherein one end of the water collection barrel (31) is communicated with a water storage tank (21), the other end of the water collection barrel is connected with the water suction pipe (32), the main valve (33) is arranged on the water suction pipe (32), the inlet of the first water pump (34) is connected with the water suction pipe (32), the outlet of the main water delivery pipe is connected with the main water delivery pipe (35), the main water delivery pipe (35) is respectively connected with the two secondary water delivery pipes (36), one end of each spraying component (37) is arranged at the output end of the corresponding secondary water delivery pipe (36), and the other end of each spraying component is fixed on the inner wall of the cleaning box (22) through a supporting frame.

3. An electrocoating water washing apparatus as claimed in claim 2, wherein: the secondary water supply pipe (36) is provided with a first valve (361) and a hydraulic gauge (362).

4. An electrocoating water washing apparatus as claimed in claim 2, wherein: the spraying assembly (37) comprises two water outlet pipes (371) and a plurality of spray heads (372) arranged on the water outlet pipes (371), and the spraying assembly (37) positioned at the high position is suitable for being covered with a waterproof cover (6).

5. An electrocoating water washing apparatus as claimed in claim 1, wherein: the conveying mechanism (4) comprises a servo motor (41), two main driving shafts (42) and a plurality of roller assemblies (43), wherein the servo motor (41) is connected with one main driving shaft (42), each roller assembly (43) is erected between the two main driving shafts (42), the main driving shafts (42) are fixed in the cleaning box (22) through fixing plates, and the main driving shafts (42) are connected with the roller assemblies (43) and each roller assembly (43) in a matched mode through gear transmission.

6. An electrocoating water washing apparatus as claimed in claim 1, wherein: the recovery mechanism (5) comprises a recovery pipe (52) and a water suction pump (52) connected with the recovery pipe, wherein the recovery pipe (51) is communicated with the inside of the cleaning box (22).

7. An electrocoating water washing apparatus as claimed in claim 2, wherein: sealing doors (221) are arranged at two sides of the cleaning box (22) corresponding to the conveying mechanisms (4), and visual windows (222) are arranged at the upper sides of the cleaning box.

8. The method for using the electrophoretic coating water washing equipment as claimed in claim 7, wherein the specific method is as follows:

s1, transporting: the control module opens one side sealing door (221), and simultaneously starts the conveying mechanism (4) to rotate in the opposite direction to the opened sealing door (221), so that a workpiece fed from the sealing door (221) is driven to move towards the inside of the cleaning box (22), after the workpiece reaches a set position, the conveying mechanism (4) is closed, the control module controls the sealing door (221) to be closed, and the cleaning box (22) is a relatively closed space.

S2, immersing in water for washing: the control module sends a starting command to the first water pump (34), water in the water storage tank (21) sequentially passes through the water collection barrel (31), the water suction pipe (32), the main valve (33) and the first water pump (34), the water is sent to the low-level secondary water delivery pipe (36) from the main water delivery pipe (35), the low-level first valve (361) is in an open valve state, the high-level first valve (361) is in a closed valve state, and finally the water is input into the cleaning box (22) through the low-level spraying assembly (37), and the control module drives the water delivery mechanism (3) to deliver quantitative water into the cleaning box (22).

S3, spray water washing: after the workpiece is immersed in the water, the control module immediately drives the recovery mechanism (5) to start pumping and draining water in the cleaning box (22), meanwhile, the water delivery mechanism (3) is controlled to start, the two first valves (361) are opened simultaneously, the high-low spraying assembly (37) sprays the upper surface and the lower surface of the workpiece, and the pumping and draining flow is far greater than the spraying flow.

S4, after washing, delivering: after the spraying is finished, the control module opens the sealing doors (221) at the two sides, and receives a new batch of workpieces to be cleaned while delivering the cleaned workpieces.

S5, repeating the steps S1 to S4 to finish the water washing operation.

9. An electrocoating water washing apparatus as claimed in claim 6, further comprising: the auxiliary water washing assembly (8) is composed of a shunt tube (81), a second water pump (82) and a second valve (83), wherein one end of the shunt tube (81) is connected to the recovery tube (51), the other end of the shunt tube is arranged on the cleaning box (22) in a penetrating mode, the second water pump (82) is arranged on the shunt tube (81), and the second valve (83) is arranged on the recovery tube (51).

10. An electrocoating water washing apparatus as claimed in claim 9, wherein: the shunt tube (81) is provided with a filter layer (811) and an oleophobic layer (812) on the input side of the second water pump (82).

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