CN115055318A

CN115055318A - Heat exchanger coating system and coating process

Info

Publication number: CN115055318A
Application number: CN202210841153.3A
Authority: CN
Inventors: 娄毓昶; 辛伟; 朱明亮
Original assignee: Shandong Deqi Huayi Anti Corrosion Engineering Co ltd
Current assignee: Shandong Deqi Huayi Anti Corrosion Engineering Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-09-16

Abstract

The invention relates to the technical field of coating, in particular to a heat exchanger coating system and a coating process, which comprises two symmetrically-arranged rotary sealing chuck assemblies, wherein a bearing mechanism is arranged below the two rotary chuck assemblies, the bottoms of the two rotary chuck assemblies are respectively clamped at the tops of two ends of the bearing mechanism in a sliding manner, a reciprocating type spraying mechanism is arranged on the rear side above the bearing mechanism, and the reciprocating type spraying mechanism is positioned above a heat exchanger workpiece to be coated in a working state and realizes uniform spraying of the heat exchanger workpiece to be coated; the bearing mechanism is used for stably supporting and internally preventing the coating when a heat exchanger workpiece to be coated is placed in a hoisting mode. The uniform rotation of the workpiece is realized by adopting a professional rotary sealing chuck assembly, the problems of bubble dripping and falling and the like generated by coating are greatly solved from the process angle, and the surface effect of the coated workpiece is better.

Description

Heat exchanger coating system and coating process

Technical Field

The invention relates to the technical field of coating, in particular to a water-based coating system with good environmental property and good coating surface effect and a novel coating process method realized by using the water-based coating system, and especially relates to a heat exchanger coating system and a coating process.

Background

The coating material includes various kinds such as a water-soluble coating material, a water-reducible coating material, a water-dispersible coating material (latex coating material), an oil-based coating material, and an organic diluent coating material.

The surface coating of the heat exchanger can effectively play a role of corrosion prevention, and a water-based yellowing-resistant white paint curtain coating process is disclosed in the patent document with the spraying application number of CN202010453208.4 at present, and mainly comprises the following steps: s1, first white bottom coating: carrying out first white bottom spray coating on the wooden door by adopting a spray coating machine and the water-based yellowing and whitening resistant paint, wherein the coating quantity of the water-based yellowing and whitening resistant paint is 65 +/-5 g/square meter; s2, surface drying: drying for 30 minutes in an environment with the temperature of 30-40 ℃ and the humidity of 30-70%; s3, white bottom curtain coating for the second time: carrying out second white bottom spray coating on the wood door by adopting a spray coating machine and the water-based yellowing and whitening resistant paint, wherein the coating quantity is 65 +/-5 g per square meter; s4, drying: drying for 60 minutes in an environment with the temperature of 30-40 ℃ and the humidity of 30-70%; then drawing the mixture into a drying channel, and drying the mixture for 180 minutes in the drying channel at the temperature of 45-60 ℃; s5, sand throwing: sanding the dried wood door by using a sander; s6, first-pass white surface curtain coating: carrying out first white surface spray coating on the wooden door by adopting a spray coating machine and the water-based yellowing and whitening resistant paint, wherein the coating quantity of the water-based yellowing and whitening resistant paint is 65 +/-5 g/square meter; s7, surface drying: drying for 30 minutes in an environment with the temperature of 30-40 ℃ and the humidity of 30-70%; s8, second water white surface spray coating: carrying out second white surface spray coating on the wooden door by adopting a spray coating machine and the water-based yellowing and whitening resistant paint, wherein the coating quantity of the water-based yellowing and whitening resistant paint is 65 +/-5 g per square meter; s9, drying: drying for 60 minutes in an environment with the temperature of 30-40 ℃ and the humidity of 30-70%; then drawing the mixture into a drying channel, and drying the mixture for 180 minutes in the drying channel at the temperature of 45-60 ℃.

In particular, the disclosure of the publication shows that the process according to the above patent is used for coating of water-based paint, and the process has surface effect problems such as bubble dropping during coating and surface drying, and these problems are not effectively solved in the patent.

Meanwhile, as can be seen from the above documents in the prior art, the current coating process for water-based paint has poor environmental protection and the coating forming effect of the surface coating after coating is poor. Therefore, the invention provides a novel heat exchanger coating system with good environmental performance and good coating surface effect and a coating process method, which are used for better solving the problems in the prior art.

Disclosure of Invention

In order to solve one of the technical problems, the invention adopts the technical scheme that: the utility model provides a heat exchanger coating system, includes the rotary seal chuck assembly that double-phase symmetry set up, two the rotatory main shaft of rotary seal chuck assembly all has outside rotation driving piece drive, its characterized in that: the two rotary sealing chuck assemblies are matched to realize positioning and clamping of a heat exchanger workpiece to be coated and realize sealing of a flange pipe orifice of the heat exchanger, a bearing mechanism is arranged below the two rotary sealing chuck assemblies, the bottoms of the two rotary sealing chuck assemblies are respectively connected with the tops of two ends of the bearing mechanism in a sliding and clamping manner, a reciprocating type spraying mechanism is arranged on the rear side above the bearing mechanism, and the reciprocating type spraying mechanism is positioned above the heat exchanger workpiece to be coated in a working state and realizes uniform spraying of the heat exchanger workpiece to be coated; the bearing mechanism is used for stably supporting a heat exchanger workpiece to be coated when the heat exchanger workpiece is placed in a hoisting mode. In any of the above solutions, it is preferable that the separation distance between the two rotary seal chuck assemblies can be adjusted synchronously back to back or back to each other along with the horizontal movement of the external rotary driving member.

In any of the above schemes, preferably, a through-going inner coating feeding pipe orifice is arranged at the left end chuck of the two rotary sealing chuck assemblies and connected with an inner coating feeding pump, a through-going inner coating discharging pipe orifice with a sealing switch is arranged at the right end chuck, and the tail end of the inner coating discharging pipe orifice is connected with a coating recovery tank; the internal coating feeding pipe orifice is used for conveying the coating to the inner part of the inner cavity of the heat exchanger to realize internal coating, and the internal coating discharging pipe orifice is used for receiving residual coating discharged from the inner cavity of the heat exchanger after internal coating.

In any of the above schemes, preferably, the load-bearing mechanism includes a horizontally arranged load-bearing platform, a load-bearing seat is fixed at the center of the top of the load-bearing platform, the load-bearing seat is located right below the heat exchanger workpiece to be coated, and first rails arranged along the left and right length directions of the load-bearing seat are fixed in parallel at intervals on the inner side and the outer side of the top of the load-bearing seat; a first fixed hydraulic group which is vertically arranged is fixed at the top of the bearing seat on the right side of the two first tracks, the first fixed hydraulic group consists of four first jacking oil cylinders which are synchronously and vertically arranged, a protective bearing rolling shaft is movably mounted at the top of a piston rod of each first jacking oil cylinder, and the top of the protective bearing rolling shaft is used for realizing the butt joint of a heat exchanger workpiece to be coated; still fix the left variable hydraulic pressure group in first fixed hydraulic pressure group including quick detach formula interval, variable hydraulic pressure group comprises four relative intervals and the vertical removal jacking cylinder of synchronous lift first fixed hydraulic pressure group left side interval is provided with four hydraulic pressure group location punch combination, hydraulic pressure group location punch combination has a plurality of to set up respectively hydraulic pressure group fixed orifices on the bearing seat of first track both sides, and a plurality of hydraulic pressure group fixed orifices cooperation that is located same first orbital both sides realizes the location to the vertical removal jacking cylinder of quick detach formula installation in its top.

In any of the above solutions, preferably, when the length of the heat exchanger workpiece to be coated is less than or equal to 6 meters, the variable hydraulic group is installed at the position of the hydraulic group positioning hole group on the right side.

In any of the above solutions, it is preferable that the variable hydraulic group is installed at the position of the hydraulic group positioning hole group on the left side when the length of the heat exchanger workpiece to be coated is greater than 6 meters.

In any of the above schemes, preferably, the bottom of the two ends of the bearing platform is respectively provided with a right end support frame with a first underground space and a left end support frame with a second underground space, and the right end support frame and the left end support frame are matched to realize bottom support of the bearing platform.

In any of the above schemes, preferably, the bottom of the right end of the bearing platform is movably hinged to the top of the right end support frame through a bearing rotating shaft; and a second fixed hydraulic group and a third fixed hydraulic group which are vertically and fixedly arranged are arranged on the ground in the second underground space at intervals along the left-right direction of the ground, and the top of the second fixed hydraulic group and the top of the third fixed hydraulic group are used for penetrating through the through space at the top of the left end support frame and are abutted against the bottom of the left end of the bearing platform.

In any of the above schemes, preferably, the bottom of the left end of the bearing platform is fixed with anti-skid lines;

the tops of the piston rods of the second fixed hydraulic group and the third fixed hydraulic group are respectively fixed with an anti-skidding jacking block, and the anti-skidding jacking blocks are used for abutting against the anti-skidding thread at the corresponding positions;

when the length of the heat exchanger workpiece to be coated is less than or equal to 6 meters, the third fixed hydraulic group controls the inclination angle of the bearing seat through jacking;

when the length of the heat exchanger workpiece to be coated is greater than 6 meters, the second fixed hydraulic group controls the inclination angle of the bearing seat through jacking.

In any of the above schemes, preferably, anti-drop anchor cables are bolted to both sides of the left end of the bearing seat, the lower ends of the anti-drop anchor cables are hooked on the ground, and the two anti-drop anchor cables are used for limiting the inclination range of the bearing seat.

In any of the above schemes, preferably, the reciprocating type spraying mechanism comprises a plurality of second rails which are arranged in parallel at intervals and fixed, each second rail is arranged at the rear side of the bearing mechanism and is fixedly supported above the ground through supporting legs, a sliding vertical frame is slidably clamped at the top of each second track, a spraying device is fixedly arranged at the front side of the top of the sliding vertical frame, the spraying equipment is provided with a spraying feed inlet and a spraying discharge outlet with valves, each nozzle of the spraying equipment is positioned at the bottom of the surface of the spraying equipment and realizes the rapid spraying of the heat exchanger workpiece to be sprayed and coated, the spraying feed port is connected with external paint storage equipment through a feed pipeline with a pump, the spraying discharge port is connected with waste paint recovery and treatment equipment through a discharge pipeline with a pump, the sliding vertical frame realizes horizontal reciprocating pushing due to the connected telescopic driving cylinder group which is horizontally and fixedly arranged.

The coating spraying device is characterized in that side blocking parts are arranged on the front, the back, the left and the right of the bearing seat respectively, the edges of the side blocking parts are arranged in an upward inclined mode, and the side blocking parts are used for preventing the coating which is sprayed and dripped on the top of the bearing seat from scattering and flowing out all around.

In any of the above schemes, preferably, the inside of the bearing seat is of a hollow structure, a plurality of coating collecting holes are formed in the top horizontal section of the bearing seat, each coating collecting hole is communicated with the coating collecting inner cavity inside the bearing seat, a plurality of coating leading-out hoses are arranged on the right end face of the bearing seat along the front-back direction of the bearing seat, each coating leading-out hose is connected to a recovery pipeline, a material suction pump is installed on the recovery pipeline, the tail end of the recovery pipeline is connected to waste coating recovery processing equipment, and the waste coating recovery processing equipment is used for filtering and purifying the recovered coatings and conveying the recovered coatings to the inside of coating storage equipment through a pipeline for recycling.

In any of the above aspects, the inclination angle of each rib part is preferably 30 to 60 °.

In any of the above schemes, preferably, the bottom right end of the paint collecting cavity is arranged to be inclined downwards, so as to guide the paint to the right.

The invention also provides a heat exchanger coating process, which is realized by utilizing the heat exchanger water coating system and comprises the following steps:

s1, determining the size of the heat exchanger, and adjusting the variable hydraulic unit according to the size of the heat exchanger;

the heat exchanger with the length of 6 meters or less fixes the variable hydraulic group by using the fixing hole of the right hydraulic group, and the equipment with the length of 6 meters or more fixes the variable hydraulic group by using the fixing hole of the left hydraulic group.

S2, hoisting the heat exchanger to the variable hydraulic group and the first fixed hydraulic group by using a crane and horizontally placing the heat exchanger;

the bearing of the heat exchanger is mainly shared by a variable hydraulic group, a first fixed hydraulic group, a bearing seat and a bearing platform.

S3, moving the distance-adjustable rotating equipment sealing chuck assembly on the two sides of the bearing platform to flanges on the two sides of the heat exchanger by using a first rail, and fixing the flanges at the two ends of the heat exchanger by using the sealing chucks on the distance-adjustable rotating equipment sealing chuck assembly;

and S4, opening the telescopic driving cylinder group, moving the spraying equipment to the position above the heat exchanger by using the second rail, and closing the telescopic driving cylinder group.

S5, opening a spraying feed inlet, filling the paint into the spraying equipment from the spraying feed inlet by using a feed pump, and then closing the spraying feed inlet;

s6, opening a rotating motor switch on a chuck assembly of the distance-adjustable rotating equipment, maintaining the rotating speed of the rotating motor at 1-2 r/min, and driving a heat exchanger to synchronously and horizontally rotate by utilizing the chuck, a variable hydraulic group and a protective bearing roller on a first fixed hydraulic group;

s7, opening a spraying device to start spraying, wherein the spraying time is controlled within 10-60min according to the diameter of the heat exchanger;

s8, closing the spraying equipment, opening the telescopic driving cylinder group and moving the spraying equipment to the original position by using the second track;

s9, after the spraying equipment is closed, the heat exchanger is kept to rotate horizontally for 3-20min, and then the rotating motor is closed, wherein the specific time is based on that the coating sprayed on the heat exchanger does not drip in a columnar shape any more;

s10, after the rotating motor is turned off, the feeding pump at the chuck on the left side is turned on, anti-flooding coating is carried out in the heat exchanger for 5-30min until the interior of the heat exchanger is filled with coating, and the feeding pump is turned off.

S11, after a rotating motor is turned off, a second fixed hydraulic group or a first fixed hydraulic group in a second underground space is selectively opened according to the size of equipment, the first fixed hydraulic group is selectively opened when the length of a heat exchanger is 6 meters or less, the second fixed hydraulic group is selectively opened when the length of the heat exchanger is more than 6 meters, one end of a bearing seat is lifted by utilizing the combined action of the hydraulic groups and a bearing rotating shaft, meanwhile, a certain operation space is provided for the second underground space, an angle paint control procedure is started under the combined action of the second underground space, a sealing switch at a right chuck is opened to start paint control after the lifting is finished, the paint control angle is maintained at 5-15 degrees, the paint control time is 20-60min, and the paint is specifically determined on the basis that the paint does not drip;

and S12, maintaining the equipment state and starting surface drying, wherein the surface drying time is controlled to be 60-120 min, and the aim is to ensure that the coated surface is not sticky when touched by hands.

In any of the above solutions, it is preferable that after step S12, the method further includes the steps of: and opening a material suction pump on the recovery pipeline to recover the paint accumulated in the paint collection inner cavity, and conveying the paint to the paint storage equipment for recycling by a pipeline after the paint is connected to the waste paint recovery and treatment equipment through the recovery pipeline for treatment.

Compared with the prior art, the invention has the following beneficial effects: the technical scheme of the problem is as follows:

1. the spraying is carried out by adopting the existing professional spraying equipment, the spraying, the rotation, the pouring, the paint control and the surface drying of the workpiece can be carried out in a multi-position integrated manner, the moving times of the coated heat exchanger workpiece in the treatment process are effectively reduced, and the safety of the whole spraying process is effectively improved.

2. The uniform rotation of the workpiece is realized by adopting a professional rotary sealing chuck assembly, the problems of bubble dripping and falling and the like generated by coating are greatly solved from the process angle, and the surface effect of the coated workpiece is better.

3. By adopting the professional rotary sealing chuck assembly, the two sides of the heat exchanger are sealed, the leakage of the inner anti-coating is prevented, the operation of the inner and outer anti-coating on the same platform is realized, the operation processes such as lifting and moving are reduced, the potential safety hazard of large-scale equipment operation is reduced, and the time cost is saved.

4. By adopting a special bearing seat structure, the paint wasted in the coating process can be recycled, and the cost is effectively saved.

5. The shower coating temperature environment only needs a room temperature environment of more than 0 ℃, the environmental requirement is low, the heating time and the cost are saved, the resources such as electric power and the like are saved, and the environmental protection and energy saving requirements are better met.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or components are generally identified by like reference numerals. In the drawings, elements or components are not necessarily drawn to scale.

Fig. 1 is a schematic top view of the present invention.

Fig. 2 is a partial schematic front view structure diagram of the present invention.

FIG. 3 is a partial side view of the present invention.

In the drawings, 1, a seal chuck assembly is rotated; 2. a load bearing seat; 3. a first track; 4. a hydraulic group fixing hole; 5. a variable hydraulic group; 6. a first fixed hydraulic group; 7. a second track; 8. a spray feed port; 9. a sliding vertical frame; 10. spraying equipment; 11. spraying a discharge hole; 12. a load-bearing platform; 13. a second stationary hydraulic group; 14. a third fixed hydraulic group; 15. a bearing rotating shaft; 16. a support leg; 17. a first subterranean space; 18. a second subterranean space; 19. a telescopic driving cylinder group; 20. a feed line; 21. a paint storage device; 22. a discharge line; 23. waste coating recovery processing equipment; 24. anti-drop anchor cables;

25. anti-skid lines; 26. an anti-skid ejector block; 27. a left end support frame; 28. a right end support frame; 29. a protective bearing roller;

30. a rib part; 31. a coating collection aperture; 32. a coating collection inner cavity; 33. a coating material outlet hose; 34. a recovery pipeline;

35. a suction pump; 36. internally coating a feed pipe orifice; 37. an undercoating feed pump; 38. and internally coating a discharge pipe orifice.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. The specific structure of the invention is shown in fig. 1-3.

Example 1:

a heat exchanger coating system comprises two symmetrically-arranged rotary sealing chuck assemblies 1, wherein the rotary main shafts of the two rotary sealing chuck assemblies 1 are driven by external rotary driving parts, the two rotary sealing chuck assemblies 1 are matched to realize positioning and clamping of a heat exchanger workpiece to be coated and realize sealing of a heat exchanger pipe orifice, a bearing mechanism is arranged below the two rotary chuck assemblies 1, the bottoms of the two rotary chuck assemblies 1 are respectively clamped at the tops of two ends of the bearing mechanism in a sliding manner, a reciprocating type spraying mechanism is arranged on the rear side above the bearing mechanism, and the reciprocating type spraying mechanism is positioned above the heat exchanger workpiece to be coated and realizes uniform spraying of the heat exchanger workpiece to be coated under the working state; the bearing mechanism is used for stably supporting a heat exchanger workpiece to be coated when the heat exchanger workpiece is placed in a hoisting mode.

In any of the above solutions, it is preferable that the separation distance between the two rotary seal chuck assemblies 1 can be adjusted synchronously back and forth or in opposite directions along with the horizontal movement of the external rotary driving member.

In any of the above schemes, preferably, the chuck at the left end of the chuck assembly of the rotary sealing equipment is provided with an internal coating feeding pipe orifice, the outer end of the chuck is connected to an internal coating feeding pump, the inner end of the chuck is communicated with the inside of an internal coating heat exchanger to perform internal anti-coating on the heat exchanger to be coated, and the right end of the chuck is communicated with an internal coating discharging pipe orifice and is connected to a coating recovery tank after being provided with a sealing switch for recovering the coating; the internal coating feeding pipe orifice is used for conveying the coating to the inner part of the inner cavity of the heat exchanger to realize internal coating, and the internal coating discharging pipe orifice is used for receiving residual coating discharged from the inner cavity of the heat exchanger after internal coating.

In any of the above schemes, preferably, the load-bearing mechanism includes a load-bearing platform 12 horizontally arranged, a load-bearing seat 2 is fixed at the top center of the load-bearing platform 12, the load-bearing seat 2 is located right below a heat exchanger workpiece to be coated, and first rails 3 arranged along the left and right length directions of the load-bearing seat 2 are fixed in parallel at intervals on the inner and outer sides of the top of the load-bearing seat 2; a first fixed hydraulic group 6 which is vertically arranged is fixed at the top of the bearing seat 2 on the right side of the two first tracks 3, the first fixed hydraulic group 6 consists of four first jacking oil cylinders which are synchronously and vertically arranged, a protective bearing roller 29 is movably mounted at the top of a piston rod of each first jacking oil cylinder, and the top of the protective bearing roller 29 is used for realizing the abutting of a heat exchanger workpiece to be coated; still fix at the left variable hydraulic pressure of first fixed hydraulic pressure group 5 including quick detach formula interval, variable hydraulic pressure group 5 comprises four relative intervals and the vertical removal jacking cylinder of synchronous lift 6 left side intervals of first fixed hydraulic pressure group are provided with four hydraulic pressure group location punch combination, hydraulic pressure group location punch combination has a plurality of to set up respectively hydraulic pressure group fixed orifices 4 on the bearing seat 2 of first track 3 both sides, and a plurality of hydraulic pressure group fixed orifices 4 that are located the both sides of same first track 3 cooperate to realize the location to the vertical removal jacking cylinder that quick detach formula was installed in its top.

In any of the above schemes, preferably, a right end support frame 28 having the first underground space 17, a left end support frame 27 having the second underground space 18 are respectively installed at the bottoms of the two ends of the bearing platform 12, and the right end support frame 28 and the left end support frame 27 are matched to realize bottom support of the bearing platform 12.

In any of the above schemes, preferably, the bottom of the right end of the bearing platform 12 is movably hinged on the top of the right end support frame 28 through a bearing rotating shaft 15; and a second fixed hydraulic group 13 and a third fixed hydraulic group 14 which are vertically and fixedly arranged are arranged on the ground in the second underground space 18 at intervals along the left-right direction of the ground, and the tops of the second fixed hydraulic group 13 and the third fixed hydraulic group 14 are used for penetrating through the through space at the top of the left end supporting frame 27 and are abutted against the bottom of the left end of the bearing platform 12.

In any of the above schemes, preferably, the reciprocating type spraying mechanism includes a plurality of second rails 7 which are arranged in parallel at intervals and fixed, each second rail 7 is arranged at the rear side of the bearing mechanism and fixedly supported above the ground through a support leg 16, a sliding vertical frame 9 is slidably clamped at the top of each second rail 7, a spraying device 10 is fixedly installed at the front side of the top of the sliding vertical frame 9, a spraying feed inlet 8 with a valve and a spraying discharge outlet 11 are arranged on the spraying device 10, each nozzle of the spraying device 10 is positioned at the bottom of the surface thereof and realizes rapid spraying of a heat exchanger workpiece to be sprayed, the spraying feed inlet 8 is connected with an external paint storage device 21 through a feed pipeline 20 with a pump, and the spraying discharge outlet 11 is connected with a waste paint recovery processing device 23 through a discharge pipeline 22 with a pump, the sliding vertical frame 9 realizes horizontal reciprocating movement due to the connected telescopic driving cylinder group 19 which is horizontally and fixedly arranged.

The invention also provides a heat exchanger coating process, which is realized by utilizing the heat exchanger coating system and comprises the following steps:

s1, determining the size of the heat exchanger, and adjusting the variable hydraulic group 5 according to the size of the heat exchanger;

the length of the heat exchanger is 6 meters or less, the variable hydraulic group 5 is fixed by the right hydraulic group fixing hole 4, and the variable hydraulic group 5 is fixed by the equipment with the length of 6 meters or more, and the variable hydraulic group 5 is fixed by the left hydraulic group fixing hole 4.

S2, hoisting the heat exchanger to the variable hydraulic group 5 and the first fixed hydraulic group 6 by using a navigation vehicle and horizontally placing the heat exchanger;

the bearing of the heat exchanger is mainly shared by a variable hydraulic group 5, a first fixed hydraulic group 6, a bearing seat 2 and a bearing platform 12.

S3, moving the distance-adjustable rotary sealing equipment chuck assemblies on the two sides of the bearing platform 12 to flanges on the two sides of the heat exchanger by using the first rail 3, and fixing the flanges on the two ends of the heat exchanger by using the sealing chucks on the distance-adjustable rotary sealing equipment chuck assemblies;

and S4, opening the telescopic driving cylinder group 19, moving the spraying equipment 10 to the upper part of the heat exchanger by using the second rail 7, and closing the telescopic driving cylinder group 19.

S5, opening the spraying feed port 8, filling the paint into the spraying equipment 10 from the spraying feed port 8 by using a feed pump, and then closing the spraying feed port 8;

s6, opening a rotary motor switch on a chuck assembly of the rotary sealing equipment with adjustable distance, maintaining the rotating speed of the rotary motor at 1-2 r/min, and utilizing the chuck, the variable hydraulic group 5 and the protective bearing roller 29 on the first fixed hydraulic group 6 to drive the heat exchanger to synchronously and horizontally rotate;

s7, opening the spraying equipment 10 to start spraying, wherein the spraying time is controlled within 10-60min according to the diameter of the heat exchanger;

s8, closing the spraying equipment 10, opening the telescopic driving cylinder group 19 and moving the spraying equipment 10 to the original position by using the second rail 7;

s9, after the spraying equipment 10 is closed, the heat exchanger is kept to rotate horizontally for 3-20min, and then the rotating motor is closed, wherein the specific time is based on that the coating sprayed on the heat exchanger does not drip in a columnar shape any more;

S11, after the rotating motor is turned off, a second fixed hydraulic group 13 or a first fixed hydraulic group 6 in a second underground space 18 is selectively opened according to the size of equipment, the first fixed hydraulic group 6 is selectively opened when the length of a heat exchanger is 6 meters or less, the second fixed hydraulic group 13 is selectively opened when the length of the heat exchanger is more than 6 meters, one end of the bearing seat 2 is lifted by utilizing the combined action of the hydraulic groups and the bearing rotating shaft 15, meanwhile, the second underground space 18 provides a certain operating space, an angle paint control process is started under the combined action of the operating space, a sealing switch at a right chuck is opened to start paint control after the lifting is finished, the paint control angle is maintained at 5-15 degrees, the paint control time is 20-40min, and the aim is to specifically take the condition that no paint drops occur;

In any of the above schemes, it is preferable that the method further includes, after step S12, the steps of: and opening a material suction pump 35 on the recovery pipeline 34 to recover the paint accumulated in the paint collection inner cavity 32, and conveying the paint to the paint storage equipment 21 for recycling by a pipeline after the paint is connected to the waste paint recovery processing equipment 23 through the recovery pipeline 34 for processing.

Example 2:

a heat exchanger coating system comprises two symmetrically-arranged rotary sealing chuck assemblies 1, wherein the rotary main shafts of the two rotary sealing chuck assemblies 1 are driven by external rotary driving parts, the two rotary sealing chuck assemblies 1 are matched to realize the positioning and clamping of a heat exchanger workpiece to be coated, a bearing mechanism is arranged below the two rotary chuck assemblies 1, the bottoms of the two rotary sealing chuck assemblies 1 are respectively clamped at the tops of two ends of the bearing mechanism in a sliding manner, a reciprocating type spraying mechanism is arranged on the rear side above the bearing mechanism, and the reciprocating type spraying mechanism is positioned above the heat exchanger workpiece to be coated in a working state and realizes the uniform spraying of the heat exchanger workpiece to be coated; the bearing mechanism is used for stably supporting a heat exchanger workpiece to be coated when the heat exchanger workpiece is placed in a hoisting mode.

The water paint coating system of the heat exchanger only needs a room temperature environment of more than 0 ℃, has low environmental requirement, saves the heating time and cost, saves the resources such as electric power and the like, and better meets the requirements of environmental protection and energy conservation; the problem of bubble dropping during coating is reduced from the process perspective.

After coating is finished, the rotary paint control is realized through the rotation of the rotary sealing chuck assembly 1, so that the problem that the appearance is influenced by bubble dropping and the like generated in the coating process is further reduced;

the spraying mode is carried out by adopting a workpiece rotary coating mode.

Determining the size of a heat exchanger, and adjusting the variable hydraulic group 5 according to the size of the heat exchanger;

the bearing of the heat exchanger is mainly shared by a variable hydraulic group 5, a first fixed hydraulic group 6, a bearing seat 2 and a bearing platform 12 of a bearing mechanism.

After the heat exchanger is installed, the reciprocating type spraying mechanism is controlled to approach the heat exchanger and is arranged right above the heat exchanger, the rotary sealing chuck assembly 1 is started to drive the heat exchanger workpiece to rotate at the moment, the coating storage device 21 is controlled to supply materials, the spraying device 10 on the reciprocating type spraying mechanism sprays, the coating sprays on the surface of the rotating workpiece below the reciprocating type spraying mechanism, and finally the overall spraying is finished.

In any of the above solutions, it is preferable that the separation distance between the two rotary seal chuck assemblies 1 can be adjusted synchronously back to back or toward each other along with the horizontal movement of the external rotary driving member, mainly to match heat exchanger workpieces with different lengths.

The bearing platform 12 is used as a main bearing structure, the bearing seat 2 arranged on the bearing platform is used as a key bearing part, and the first fixed hydraulic group 6 is matched with the variable hydraulic group 5 which can be installed along the length direction of the bearing seat 2 in a position-shifting manner to realize stable support of the bottoms of two ends of different workpieces.

The protective bearing roller 29 can be used for supporting and guiding the bearing, and can be used for supporting and guiding the workpiece when the workpiece is passively rotated.

In any of the above solutions, it is preferable that when the length of the heat exchanger workpiece to be curtain-coated is less than or equal to 6 meters, the variable hydraulic group 5 is installed at the position of the hydraulic group positioning hole group on the right side.

In any of the above solutions, it is preferable that when the length of the workpiece of the heat exchanger to be coated is greater than 6 meters, the variable hydraulic group 5 is installed at the position of the hydraulic group positioning hole group on the left side, and considering that the size of the workpiece is larger, the arrangement increases the separation distance between the variable hydraulic group 5 and the first fixed hydraulic group 6, and ensures the stability of the support.

The right end support frame 28 and the left end support frame 27 are used in a matching manner in a normal state, so that the bottoms of the two ends of the bearing platform 12 can be stably supported.

According to the different sizes of the workpieces, one of the second fixed hydraulic group 13 and the third fixed hydraulic group 14 with different torques can be selected for jacking, so that the good jacking performance and stability of the long workpieces can be effectively guaranteed.

In any of the above schemes, preferably, the bottom of the left end of the bearing platform 12 is fixed with anti-skid lines 25, which can effectively play a role of anti-skid;

the tops of the piston rods of the second fixed hydraulic group 13 and the third fixed hydraulic group 14 are respectively fixed with an anti-skid ejector block 26, and the anti-skid ejector blocks 26 are used for abutting against the anti-skid lines 25 at corresponding positions;

the anti-skid top block 26 is matched with the anti-skid lines 25 to ensure the stability of the anti-skid top block during abutting, and the anti-skid function is effectively achieved.

When the length of the heat exchanger workpiece to be coated is less than or equal to 6 meters, the third fixed hydraulic group 14 controls the inclination angle of the bearing seat 2 through jacking;

when the length of the heat exchanger workpiece to be coated is greater than 6 meters, the second fixed hydraulic group 13 controls the inclination angle of the bearing seat 2 through jacking.

Paint control can be carried out by lifting one end of the bearing platform 12 and one end of the bearing seat 2; after the paint control is finished, surface drying can be continuously carried out on the bearing platform 12, so that the movement of the coated equipment is reduced, and the safety is improved.

In any of the above schemes, preferably, anti-drop anchor cables 24 are bolted to both sides of the left end of the bearing seat 2, the lower end of each anti-drop anchor cable 24 is hooked on the ground, and the two anti-drop anchor cables 24 are used for limiting the inclination range of the bearing seat 2.

The anti-dropping anchor cable 24 plays the roles of protecting and limiting, preventing the bearing seat 2 from excessively inclining, and effectively ensuring the safety in use.

The telescopic driving cylinder group 19 can effectively drive the sliding vertical frame 9 and the spraying equipment 10 at the top of the sliding vertical frame to realize reciprocating sliding movement, so that the smoothness of the whole structure moving along the second track 7 is effectively ensured.

The coating storage equipment 21 mainly provides sufficient coating for the whole coating work, and meanwhile, the waste coating recovery and treatment equipment 23 can realize the reutilization of the collected waste coating after filtration, thereby effectively reducing the waste of resources.

The front, the back, the left and the right of the bearing seat 2 are respectively provided with a side blocking part 30 with the edges inclined upwards, and the side blocking parts 30 are used for preventing the coating dropping on the top of the bearing seat 2 from scattering and flowing out all around in the coating process.

Keep off group portion 30 can prevent effectively that the coating that falls on it from to bulk cargo all around, playing the guard action effectively, preventing that the coating from flowing out everywhere, guarantee that the coating can realize gradually entering into coating through each fender coating collection hole 31 and collect the inside collection that concentrates of inner chamber 32, improve the collection effect.

In any of the above schemes, preferably, the interior of the bearing seat 2 is a hollow structure, a horizontal section at the top of the bearing seat 2 is provided with a plurality of paint blocking collecting holes 31, each paint blocking collecting hole 31 is communicated with a paint collecting inner cavity 32 inside the bearing seat 2, a plurality of paint leading-out hoses 33 are arranged on the right end surface of the bearing seat 2 along the front-back direction of the bearing seat, each paint leading-out hose 33 is connected to a recovery pipeline 34, a suction pump 35 is installed on the recovery pipeline 34, the tail end of the recovery pipeline 34 is connected to the waste paint recovery processing equipment 23, and the waste paint recovery processing equipment 23 is used for filtering and purifying the recovered paint and conveying the recovered paint to the interior of the paint storage equipment 21 for recovery and reuse through a pipeline.

In any of the above schemes, preferably, the bottom right end of the paint collecting cavity 32 is arranged to be inclined downwards, so as to guide the paint on the cavity to the right.

Because the bottom of the coating collecting inner cavity 32 inclines rightwards, the coating flowing into the coating collecting inner cavity 32 is continuously accumulated rightwards and discharged to the corresponding recycling pipeline 34 through each coating leading-out hose 33, and the collected coating is continuously conveyed to the inside of the waste coating recycling equipment 23 for processing under the action of the regularly started suction pump 35, so that the aim of effectively recycling redundant coating is finally achieved, and the waste of the coating in the whole spraying process is effectively reduced.

In any of the above aspects, the inclination angle of each rib 30 is preferably 30 to 60 °.

The arrangement of a proper inclination angle can play a role of effective protection, thereby preventing the paint from scattering around.

the bearing of the heat exchanger is mainly shared by the variable hydraulic group 5, the first fixed hydraulic group 6, the bearing seat 2 and the bearing platform 12.

S5, opening the spraying feed inlet 8, filling the coating into the spraying equipment 10 from the spraying feed inlet 8 by using a feed pump, and then closing the spraying feed inlet 8;

s6, opening a rotating motor switch on a chuck assembly of the distance-adjustable rotating equipment, maintaining the rotating speed of the rotating motor at 1-2 r/min, and driving the heat exchanger to synchronously and horizontally rotate by utilizing the chuck, the variable hydraulic group 5 and the protective bearing roller 29 on the first fixed hydraulic group 6;

s9, after the spraying equipment 10 is closed, the heat exchanger is kept to rotate horizontally for 3-20min, and then the rotating motor is closed, wherein the specific time is based on the fact that the coating sprayed on the heat exchanger does not drip in a columnar shape any more;

S11, after the rotating motor is turned off, the second fixed hydraulic group 13 or the first fixed hydraulic group 6 in the second underground space 18 is selectively opened according to the size of the equipment, the first fixed hydraulic group 6 is selectively opened when the length of the heat exchanger is 6 meters or less, the second fixed hydraulic group 13 is selectively opened when the length of the heat exchanger is more than 6 meters, one end of the bearing seat 2 is lifted by utilizing the combined action of the hydraulic group and the bearing rotating shaft 15, meanwhile, the second underground space 18 provides a certain operating space, the angle paint control process is started under the combined action of the operating space, the sealing switch at the right chuck is opened after the lifting is finished, the paint control is started, the paint control angle is maintained at 5 degrees to 15 degrees, the paint control time is 30-60min, and the aim is that the paint does not drop;

and S12, maintaining the state of the equipment and starting surface drying, wherein the surface drying time is controlled to be 60-120 min, and the aim is to ensure that the coated surface is not sticky when touched by hands.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or substitutions do not cause the essential features of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention, and the technical solutions are all covered in the scope of the claims and the specification of the present invention; it will be apparent to those skilled in the art that any alternative modifications or variations to the embodiments of the present invention may be made within the scope of the present invention.

The present invention is not described in detail, but is known to those skilled in the art.

Claims

1. The utility model provides a heat exchanger coating system, includes the rotary seal chuck assembly that double-phase symmetry set up, two the rotatory main shaft of rotary seal chuck assembly all has outside rotation driving piece drive, its characterized in that: the two rotary sealing chuck assemblies are matched to realize positioning and clamping of a heat exchanger workpiece to be coated and realize sealing of a flange pipe orifice of the heat exchanger, a bearing mechanism is arranged below the two rotary sealing chuck assemblies, the bottoms of the two rotary sealing chuck assemblies are respectively connected with the tops of two ends of the bearing mechanism in a sliding and clamping manner, a reciprocating type spraying mechanism is arranged on the rear side above the bearing mechanism, and the reciprocating type spraying mechanism is positioned above the heat exchanger workpiece to be coated in a working state and realizes uniform spraying of the heat exchanger workpiece to be coated; the bearing mechanism is used for stably supporting the heat exchanger workpiece to be coated when the heat exchanger workpiece is placed in a hoisting mode.

2. The heat exchanger coating system of claim 1, wherein: the spacing distance between the two rotary sealing chuck assemblies can be adjusted synchronously back to back or in opposite directions along with the horizontal movement of the external rotary driving piece;

a through inner coating feeding pipe orifice is arranged at the left end chuck of the two rotary sealing chuck assemblies and is connected with an inner coating feeding pump, a through inner coating discharging pipe orifice with a sealing switch is arranged at the right end chuck, and the tail end of the inner coating discharging pipe orifice is connected with a coating recovery tank; the internal coating feeding pipe orifice is used for conveying the coating to the inner part of the inner cavity of the heat exchanger to realize internal coating, and the internal coating discharging pipe orifice is used for receiving residual coating discharged from the inner cavity of the heat exchanger after internal coating.

3. The heat exchanger coating system according to claim 2, characterized in that: the load-bearing mechanism comprises a load-bearing platform which is horizontally arranged, a load-bearing seat is fixed at the center of the top of the load-bearing platform, the load-bearing seat is positioned under a heat exchanger workpiece to be coated, and first tracks which are arranged along the left length direction and the right length direction of the load-bearing seat are fixed on the inner side and the outer side of the top of the load-bearing seat at intervals in parallel; a first fixed hydraulic group which is vertically arranged is fixed at the top of the bearing seat on the right side of the two first tracks, the first fixed hydraulic group consists of four first jacking oil cylinders which are synchronously and vertically arranged, a protective bearing roller is movably mounted at the top of a piston rod of each first jacking oil cylinder, and the top of the protective bearing roller is used for realizing the butt joint of a heat exchanger workpiece to be coated; the variable hydraulic group is fixed on the left side of the first fixed hydraulic group at intervals, the variable hydraulic group consists of four vertical movable jacking cylinders which are relatively spaced and synchronously lift, four hydraulic group positioning hole groups are arranged on the left side of the first fixed hydraulic group at intervals, the hydraulic group positioning hole groups are provided with a plurality of hydraulic group fixing holes which are respectively arranged on the bearing seats on the two sides of the first track, and the plurality of hydraulic group fixing holes on the two sides of the same first track are matched to realize positioning of the vertical movable jacking cylinders which are quickly disassembled and installed above the hydraulic group positioning hole groups;

when the length of a heat exchanger workpiece to be coated is less than or equal to 6 meters, the variable hydraulic group is arranged at the position of the hydraulic group positioning hole group on the right side;

when the length of the heat exchanger workpiece to be coated is larger than 6 meters, the variable hydraulic group is arranged at the position of the hydraulic group positioning hole group on the left side.

4. The heat exchanger coating system of claim 3, wherein: the bottom of the two ends of the bearing platform is respectively provided with a right end support frame with a first underground space and a left end support frame with a second underground space, and the right end support frame and the left end support frame are matched to realize the bottom support of the bearing platform.

5. The heat exchanger coating system of claim 4, wherein: the bottom of the right end of the bearing platform is movably hinged to the top of the right end supporting frame through a bearing rotating shaft; and a second fixed hydraulic group and a third fixed hydraulic group which are vertically and fixedly arranged are arranged on the ground in the second underground space at intervals along the left-right direction of the ground, and the top of the second fixed hydraulic group and the top of the third fixed hydraulic group are used for penetrating through the through space at the top of the left end support frame and are abutted against the bottom of the left end of the bearing platform.

6. The heat exchanger coating system of claim 5, wherein: anti-skid lines are fixed at the bottom of the left end of the bearing platform;

the tops of piston rods of the second fixed hydraulic group and the third fixed hydraulic group are respectively fixed with an anti-skidding jacking block, and the anti-skidding jacking blocks are used for abutting against the anti-skidding thread at corresponding positions;

when the length of the heat exchanger workpiece to be sprayed is less than or equal to 6 meters, the third fixed hydraulic group controls the inclination angle of the bearing seat through jacking;

and when the length of the heat exchanger workpiece to be sprayed is greater than 6 m, the second fixed hydraulic group controls the inclination angle of the bearing seat through jacking.

7. The heat exchanger coating system of claim 6, wherein: anti-drop anchor cables are bolted to two sides of the left end of the bearing seat, the lower end of each anti-drop anchor cable is hooked on the ground, and the two anti-drop anchor cables are used for limiting the inclination amplitude of the bearing seat.

8. The heat exchanger coating system of claim 7, wherein: the reciprocating type spraying mechanism comprises a plurality of second rails which are arranged in parallel at intervals and are fixed, each second rail is arranged at the rear side of the bearing mechanism and is fixedly supported above the ground through supporting legs, a sliding vertical frame is slidably clamped at the top of each second track, a spraying device is fixedly arranged at the front side of the top of the sliding vertical frame, the spraying equipment is provided with a spraying feed inlet and a spraying discharge outlet with valves, each nozzle of the spraying equipment is positioned at the bottom of the surface of the spraying equipment and realizes the rapid spraying of the heat exchanger workpiece to be sprayed and coated, the spraying feed port is connected with external paint storage equipment through a feed pipeline with a pump, the spraying discharge port is connected with waste paint recovery and treatment equipment through a discharge pipeline with a pump, the sliding vertical frame realizes horizontal reciprocating pushing due to the connected telescopic driving cylinder group which is horizontally and fixedly arranged.

9. A heat exchanger coating process, which is a heat exchanger water-based paint coating process implemented by using the heat exchanger coating system according to any one of claims 1 to 8, and is characterized in that: the method comprises the following steps:

s3, moving the distance-adjustable rotating equipment sealing chuck assemblies on the two sides of the bearing platform to flanges on the two sides of the heat exchanger by using the first rail, and fixing the flanges at the two ends of the heat exchanger by using the sealing chucks on the distance-adjustable rotating equipment sealing chuck assemblies;

and S4, opening the telescopic driving cylinder group, moving the spraying equipment to the upper part of the heat exchanger by using the second track, and closing the telescopic driving cylinder group.

s6, opening a rotating motor switch on the rotating equipment sealing chuck assembly with the adjustable distance;

s7, opening a spraying device to start spraying;

s9, after the spraying equipment is closed, the heat exchanger is kept to rotate horizontally for 3-20min, and then the rotating motor is closed;

and S10, after the rotating motor is turned off, the feeding pump at the chuck at the left side is turned on, the interior of the heat exchanger is subjected to anti-flooding for 5-30min until the interior of the heat exchanger is filled with the coating, and the feeding pump is turned off.

S11, selecting to start a second fixed hydraulic group or a first fixed hydraulic group in a second underground space according to the size of the equipment, lifting one end of the bearing seat by utilizing the combined action of the hydraulic group and the bearing rotating shaft, opening a sealing switch at the right chuck after the lifting is finished, and starting an angle paint control process;

10. The heat exchanger coating process according to claim 9, characterized in that: the following steps are also included after step S12: and opening a material suction pump on the recovery pipeline to recover the paint accumulated in the paint collection inner cavity, and conveying the paint to the paint storage equipment for recycling by a pipeline after the paint is connected to the waste paint recovery and treatment equipment through the recovery pipeline for treatment.