Paint spraying device and method for steel structure surface

Abstract

The invention provides a paint spraying device and method for the surface of a steel structure. The device comprises a bottom plate, a material storage bin installed on the bottom plate, a supporting frame installed on one side of the material storage bin and an outer pipe installed on the supporting frame. A feeding cover plate is arranged at the top of the material storage bin, a chimney inserted into the material storage bin is arranged on one side of the feeding cover plate, a discharging valve and a paint spraying valve are arranged at the bottom of the material storage bin, a liquid level detection assembly is further arranged in the material storage bin, and paint spraying on steel structures at different positions is achieved by arranging the paint spraying valve and a paint spraying opening. Through the liquid level detection assembly composed of the buoy, the swing rod and the pointer, the paint liquid level in the storage bin can be monitored in real time, and spraying interruption or insufficient paint supply caused by the too low liquid level is avoided; the backflow pipe is provided with a self-priming pump, and it is guaranteed that the paint can be smoothly conveyed to the storage bin from a groove formed in the outer pipe.

Description

Technical Field

[0001] The invention relates to a paint spraying device and method for a steel structure surface, and in particular to the technical field of spraying. Background Art

[0002] Steel structures are widely used in buildings, bridges, industrial plants and other fields. The quality of their surface treatment directly affects the durability and aesthetics of the structure. Paint spraying is one of the important links in the surface treatment of steel structures. It can improve the corrosion resistance of steel structures and extend their service life.

[0003] The traditional manual spraying method has many disadvantages, such as uneven spraying, environmental pollution, and paint falling problems. However, the existing spraying equipment has the following shortcomings.

[0004] Uneven spraying. Traditional spraying equipment is prone to uneven paint distribution during the spraying process, resulting in uneven coating thickness, affecting the coating quality. During the spraying process, part of the paint fails to adhere to the surface of the workpiece, but is scattered in the air or on the ground, resulting in a waste of paint. Manual spraying is slow and the spraying thickness is uneven. It is impossible to control the number of spray layers and the color of different layers on the steel structure in one spraying. For large or complex steel structures, it is difficult to achieve efficient spraying. Some spraying equipment has a complex structure and is inconvenient to operate, making it difficult to adapt to the spraying needs of steel structures of different sizes and shapes. The volatile organic compounds (VOCs) generated during the spraying process pollute the environment and require effective recovery or treatment measures.

[0005] In view of the above problems, the present invention proposes a paint spraying device for the surface of steel structure, aiming to solve the shortcomings of the prior art, improve the uniformity of spraying, paint utilization and spraying efficiency, while taking into account the flexibility and environmental protection performance of the equipment. Summary of the invention

[0006] Purpose of the invention: One purpose is to propose a paint spraying device for the surface of a steel structure to solve the above-mentioned problems existing in the prior art; a further purpose is to propose a paint spraying method for the surface of a steel structure.

[0007] Technical solution: A paint spraying device for the surface of a steel structure, comprising:

[0008] A bottom plate, a storage tank mounted on the bottom plate, a support frame mounted on one side of the storage tank, and an outer tube mounted on the support frame;

[0009] The top of the storage tank is provided with a feed cover plate, one side of the feed cover plate is provided with a chimney inserted into the storage tank, the bottom of the storage tank is provided with a discharge valve and a paint spray valve, and the storage tank is also provided with a liquid level detection component.

[0010] A truss connected to the support frame is provided above the outer tube, a plurality of control valves are provided between the truss and the outer tube, one end of the control valve is connected to a nozzle arranged in the outer tube, and the other end of the control valve is connected to a drainage pipe, inner tubes are provided at both ends of the outer tube, a sub-gear is connected to the outer surface of the inner tube, and at least one set of support components is provided on one side of the sub-gear of the inner tube,

[0011] The support assembly includes a stud threadedly connected to the inner tube, an arc-shaped clamp installed at one end of the stud and placed in the inner tube, and a roller movably installed in the arc-shaped clamp. A groove is provided inside the outer tube, and a return pipe is provided between the groove and the storage compartment.

[0012] In a further embodiment, the paint spray valve is provided with a paint spray port, a booster pump is provided between the paint spray valve and the paint spray port and between the drainage pipe and the control valve, and a self-priming pump is provided on the reflux pipe.

[0013] In a further embodiment, the liquid level detection assembly includes a float placed in the storage tank, a rocker arm passing through the storage tank and connected to the float at one end, a pointer is provided at the other end of the rocker arm, and a dial installed on the storage tank is provided at the corresponding position of the pointer.

[0014] In a further embodiment, the drainage pipe is placed in the truss and communicated with the storage tank.

[0015] In a further embodiment, the outer tube is rotatably matched with the inner tube and the inner tube extends a certain distance from the outer tube, the sub-gear is interference fit with the inner tube, a drive motor is provided on the outer tube at one of the sub-gear positions, and the output shaft of the drive motor is provided with a main gear meshing with the sub-gear.

[0016] In a further embodiment, the rollers are provided in plurality and the rotation direction of the rollers is consistent with the axial direction of the outer tube, and the groove is covered with a filter net.

[0017] A paint spraying method for a steel structure surface, used to implement the paint spraying method for a steel structure surface, comprises the following steps:

[0018] Step 1: First, place the steel structure to be sprayed in the outer tube, and fix it with studs, arc clamps and rollers. The rollers control the movement of the steel structure in a single direction to keep it moving horizontally during the spraying process. Then the driving motor drives the inner tube to rotate through the engagement of the active gear and the pinion gear, so as to realize the rotation of the steel structure and facilitate all-round spraying.

[0019] Step 2: The operator then opens the feed cover and pours the paint into the storage tank;

[0020] Step 3: The float floats with the change of paint level, and is transmitted to the pointer through the swing rod. The pointer indicates the liquid level reading on the dial. The chimney is used to discharge the gas in the storage tank to maintain the pressure balance in the tank to prevent the fluidity of the paint from being affected by excessive pressure during feeding.

[0021] Step 4: Excess paint is discharged through the discharge valve, and when additional paint is needed, the paint spraying valve controls the spraying of the paint;

[0022] Step 5: When the steel structure needs to be sprayed, the paint is transported from the storage tank to the nozzle in the outer tube through the drainage pipe, pressurized by the booster pump on the way, and then transmitted to the control valve. The control valve adjusts the flow rate and spraying position of the paint. The nozzle sprays the paint onto the surface of the steel structure. The opening of the control valve at different positions can be controlled according to the spraying distance.

[0023] Step 6: The paint that has not been sprayed or dripped passes through the grooves set inside the outer tube, and the filter screen is covered on the grooves to prevent foreign matter from entering the paint flow channel and ensure the quality of the paint. The reflux pipe returns to the storage tank, and the self-priming pump ensures smooth reflux;

[0024] Step 7: After spraying is completed, the operator closes the control valve and stops spraying.

[0025] Beneficial effects: The present invention proposes a paint spraying device and method for the surface of a steel structure, which realizes paint spraying on steel structures at different positions by setting a paint spraying valve and a paint spraying port, and monitors the paint level in the storage tank in real time by a liquid level detection component composed of a float, a swing rod and a pointer, so as to avoid spraying interruption or insufficient paint supply due to too low a liquid level;

[0026] The return pipe is equipped with a self-priming pump to ensure that the paint can be smoothly transported from the groove set in the outer pipe to the storage tank. Multiple control valves are set between the outer pipe and the truss to accurately control the spraying range and injection position of the paint. Control valves at different positions can realize spraying of different layers, so that the paint can evenly cover the surface of the steel structure.

[0027] The rotational coordination between the outer tube and the inner tube enables the steel structure supported on the inner tube to rotate and move, increasing the flexibility of the spraying device and facilitating its adaptation to steel structure surfaces of different shapes and sizes; the driving motor drives the main gear to rotate, and drives the inner tube to rotate through the gear transmission. The studs, arc-shaped clamping plates and rollers can firmly fix the steel structure to be sprayed, and limit the movement of the steel structure in a single direction through the rollers.

[0028] Covering the groove with a filter screen can prevent foreign matter from entering the paint flow channel and ensure the quality of the paint. The design of the feed cover makes it easy for operators to add paint materials and can be easily opened for internal cleaning during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is the front view of the present invention.

[0030] Figure 2 It is a right side half-section schematic diagram of the present invention.

[0031] Figure 3 It is a partial cross-sectional view of the storage compartment of the present invention.

[0032] Figure 4 It is a top view of the present invention.

[0033] Figure 5 It is a left view of the present invention.

[0034] Figure 6 It is a front view half-section schematic diagram of the present invention.

[0035] Figure 7 It is a stereogram of the present invention.

[0036] Figure 8 It is a half-section schematic diagram of the outer tube of the present invention.

[0037] Fig. 9 It is an enlarged schematic diagram of the inner tube of the present invention.

[0038] The accompanying drawings are marked as follows: 1. bottom plate; 2. storage compartment; 3. support frame; 4. control valve; 21. feed cover plate; 22. chimney; 23. discharge valve; 24. paint valve; 25. paint port; 26. float; 27. rocker arm; 28. pointer; 31. drainage pipe; 32. return pipe; 33. outer pipe; 34. inner pipe; 35. sub-gear; 36. main gear; 37. splint; 38. stud; 39. roller; 41. truss; 42. drive motor; 43. groove; 44. nozzle. DETAILED DESCRIPTION

[0039] The applicant believes that the traditional manual spraying method has many disadvantages, such as uneven spraying, environmental pollution, and paint falling problems. However, the existing spraying equipment has the following shortcomings.

[0040] Uneven spraying. Traditional spraying equipment is prone to uneven paint distribution during the spraying process, resulting in uneven coating thickness, affecting the coating quality. During the spraying process, part of the paint fails to adhere to the surface of the workpiece, but is scattered in the air or on the ground, resulting in a waste of paint. Manual spraying is slow and the spraying thickness is uneven. It is impossible to control the number of spray layers and the color of different layers on the steel structure in one spraying. For large or complex steel structures, it is difficult to achieve efficient spraying. Some spraying equipment has a complex structure and is inconvenient to operate, making it difficult to adapt to the spraying needs of steel structures of different sizes and shapes. The volatile organic compounds (VOCs) generated during the spraying process pollute the environment and require effective recovery or treatment measures.

[0041] In order to solve the problems existing in the prior art, the present invention uses a paint spraying device and method for the surface of a steel structure to manage the spraying environment, number of spray layers, spray color, and spraying expectations of the sprayed steel structure.

[0042] The present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0043] In this application, we propose a paint spraying device and method for a steel structure surface, wherein a paint spraying device for a steel structure surface is included, comprising:

[0044] A bottom plate 1, a storage tank 2 installed on the bottom plate 1, a support frame 3 installed on one side of the storage tank 2, and an outer tube 33 installed on the support frame 3;

[0045] A feed cover plate 21 is provided on the top of the storage compartment 2, and a chimney 22 inserted into the storage compartment 2 is provided on one side of the feed cover plate 21. A discharge valve 23 and a paint spray valve 24 are provided at the bottom of the storage compartment 2. A liquid level detection component is also provided in the storage compartment 2. The paint spray valve 24 is provided with a paint spray port 25. A booster pump is provided between the paint spray valve 24 and the paint spray port 25 and between the drainage pipe 31 and the control valve 4, and a self-priming pump is provided on the reflux pipe 32.

[0046] The liquid level detection assembly includes a float 26 placed in the storage compartment 2, a rocker 27 that passes through the storage compartment 2 and has one end connected to the float 26, a pointer 28 is provided at the other end of the rocker 27, and a dial installed on the storage compartment 2 is provided at the corresponding position of the pointer 28.

[0047] A truss 41 connected to the support frame 3 is provided above the outer tube 33, and a plurality of control valves 4 are provided between the truss 41 and the outer tube 33. One end of the control valve 4 is connected to a nozzle 44 arranged in the outer tube 33, and the other end of the control valve 4 is connected to the drainage pipe 31. Inner tubes 34 are provided at both ends of the outer tube 33, and a sub gear 35 is connected to the outer sleeve of the inner tube 34. At least one group of supporting components is provided on one side of the sub gear 35 of the inner tube 34, and the drainage pipe 31 is placed in the truss 41 and is connected to the storage compartment 2.

[0048] The support assembly includes a stud 38 threadedly connected to the inner tube 34, an arc-shaped clamping plate 37 installed at one end of the stud 38 and placed in the inner tube 34, and a roller 39 movably installed in the arc-shaped clamping plate 37. A groove 43 is provided inside the outer tube 33. A return pipe 32 is provided between the groove 43 and the storage compartment 2. The outer tube 33 is rotatably matched with the inner tube 34 and the inner tube 34 extends a distance from the outer tube 33.

[0049] The sub-gear 35 is interference fit with the inner tube 34, and the outer tube 33 is provided with a driving motor 42 at the position of one of the sub-gears 35, and the output shaft of the driving motor 42 is provided with a main gear 36 meshing with the sub-gear 35; there are multiple rollers 39 and the rotation direction of the rollers 39 is consistent with the axial direction of the outer tube 33, and the groove 43 is covered with a filter.

[0050] A paint spraying method for a steel structure surface, used to implement the paint spraying method for a steel structure surface, comprises the following steps:

[0051] Step 1: First, place the steel structure to be sprayed in the outer tube 33, and fix the steel structure to be sprayed through the stud 38, the arc clamp 37 and the roller 39, and the roller 39 controls the movement of the steel structure in a single direction to keep it moving horizontally during the spraying process; then the driving motor 42 drives the inner tube 34 to rotate through the engagement of the active tooth and the sub-gear 35, so as to realize the rotation of the steel structure and facilitate all-round spraying.

[0052] Step 2: The operator then opens the feed cover 21 and pours the paint into the storage compartment 2;

[0053] Step 3, the float 26 floats with the change of the paint liquid level, and is transmitted to the pointer 28 through the swing rod 27, and the pointer 28 indicates the liquid level reading on the dial. The chimney 22 is used to discharge the gas in the storage tank 2 to maintain the pressure balance in the tank to prevent the fluidity of the paint from being affected by excessive pressure during feeding;

[0054] Step 4, the excess paint is discharged through the discharge valve 23, and when additional paint is needed, the paint spraying valve 24 controls the spraying of the paint;

[0055] Step 5: When the steel structure needs to be sprayed, the paint is transported from the storage tank 2 to the nozzle 44 in the outer tube 33 through the drainage pipe 31, pressurized by the booster pump on the way, and then transmitted to the control valve 4. The control valve 4 adjusts the flow rate and spraying position of the paint. The nozzle 44 sprays the paint onto the surface of the steel structure. The opening of the control valve 4 at different positions can be controlled according to the spraying distance.

[0056] Step 6: The paint that is not sprayed or dripped passes through the groove 43 provided inside the outer tube 33, and the filter screen is covered on the groove 43 to prevent foreign matter from entering the paint flow channel and ensure the quality of the paint. The reflux pipe 32 returns to the storage tank 2, and the self-priming pump ensures smooth reflux;

[0057] Step 7: After spraying is completed, the operator closes the control valve 4 to stop spraying.

[0058] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A paint spraying device for a steel structure surface, characterized in that: include: A bottom plate, a storage tank mounted on the bottom plate, a support frame mounted on one side of the storage tank, and an outer tube mounted on the support frame; The top of the storage tank is provided with a feed cover plate, one side of the feed cover plate is provided with a chimney inserted into the storage tank, the bottom of the storage tank is provided with a discharge valve and a paint spray valve, and the storage tank is also provided with a liquid level detection component. A truss connected to the support frame is provided above the outer tube, a plurality of control valves are provided between the truss and the outer tube, one end of the control valve is connected to a nozzle arranged in the outer tube, and the other end of the control valve is connected to a drainage pipe, inner tubes are provided at both ends of the outer tube, a sub-gear is connected to the outer surface of the inner tube, and at least one set of support components is provided on one side of the sub-gear of the inner tube, The support assembly includes a stud threadedly connected to the inner tube, an arc-shaped clamp installed at one end of the stud and placed in the inner tube, and a roller movably installed in the arc-shaped clamp. A groove is provided inside the outer tube, and a return pipe is provided between the groove and the storage compartment.

2. A paint spraying device for a steel structure surface according to claim 1, characterized in that: The paint spray valve is provided with a paint spray port, a booster pump is provided between the paint spray valve and the paint spray port and between the drainage pipe and the control valve, and a self-priming pump is provided on the reflux pipe.

3. A paint spraying device for a steel structure surface according to claim 1, characterized in that: The liquid level detection assembly includes a float placed in the storage tank, a swing rod passing through the storage tank and connected to the float at one end, a pointer is provided at the other end of the swing rod, and a dial installed on the storage tank is provided at the corresponding position of the pointer.

4. A paint spraying device for a steel structure surface according to claim 1, characterized in that: The drainage pipe is placed in the truss and is communicated with the material storage cabin.

5. A paint spraying device for a steel structure surface according to claim 1, characterized in that: The outer tube is rotationally matched with the inner tube and the inner tube extends a certain distance from the outer tube, the sub-gear is interference fit with the inner tube, a driving motor is provided at one of the sub-gear positions of the outer tube, and the output shaft of the driving motor is provided with a main gear meshing with the sub-gear.

6. A paint spraying device for a steel structure surface according to claim 1, characterized in that: The rollers are provided in plurality and the rotation direction of the rollers is consistent with the axial direction of the outer tube, and the grooves are covered with a filter screen.

7. A paint spraying method for a steel structure surface, used to implement a paint spraying method for a steel structure surface as described in any one of claims 1 to 6, characterized in that: The steps include: Step 1: First, place the steel structure to be sprayed in the outer tube, and fix it with studs, arc clamps and rollers. The rollers control the movement of the steel structure in a single direction to keep it moving horizontally during the spraying process. Then the driving motor drives the inner tube to rotate through the engagement of the active gear and the pinion gear, so as to realize the rotation of the steel structure and facilitate all-round spraying. Step 2: The operator then opens the feed cover and pours the paint into the storage tank; Step 3: The float floats with the change of paint level, and is transmitted to the pointer through the swing rod. The pointer indicates the liquid level reading on the dial. The chimney is used to discharge the gas in the storage tank to maintain the pressure balance in the tank to prevent the fluidity of the paint from being affected by excessive pressure during feeding. Step 4: Excess paint is discharged through the discharge valve, and when additional paint is needed, the paint spraying valve controls the spraying of the paint; Step 5: When the steel structure needs to be sprayed, the paint is transported from the storage tank to the nozzle in the outer tube through the drainage pipe, pressurized by the booster pump on the way, and then transmitted to the control valve. The control valve adjusts the flow rate and spraying position of the paint. The nozzle sprays the paint onto the surface of the steel structure. The opening of the control valve at different positions can be controlled according to the spraying distance. Step 6: The paint that has not been sprayed or dripped passes through the grooves set inside the outer tube, and the filter screen is covered on the grooves to prevent foreign matter from entering the paint flow channel and ensure the quality of the paint. The reflux pipe returns to the storage tank, and the self-priming pump ensures smooth reflux; Step 7: After spraying is completed, the operator closes the control valve and stops spraying.

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