Environment-friendly waterproof paint spraying device

Abstract

The invention relates to the technical field of waterproof coatings, in particular to an environment-friendly waterproof coating spraying device which comprises a frame, moving wheels, a cleaning mechanism and a spraying mechanism, the cleaning mechanism comprises a cleaning cover, a cleaning nozzle, a first cleaning roller, a second cleaning roller and negative pressure suction equipment, and integration of base surface cleaning and impurity recovery is achieved. The spraying mechanism comprises a spraying cover, a coating hopper, an air compressor, a coating header pipe, a high-pressure gas header pipe, a coating nozzle group and a positive-pressure nozzle group, and a uniform waterproof coating is formed through high-pressure spraying. According to the device, closed design is adopted, the negative pressure harmful gas adsorption function and the positive pressure leakage prevention function are integrated, cleaning-spraying continuous operation is achieved, the problems that traditional manual spraying is low in efficiency, uneven in coating, serious in pollution and the like are solved through mechanical construction, the construction quality and the environmental protection performance are remarkably improved, and the device is suitable for large building waterproof engineering.

Description

Technical Field

[0001] This invention relates to the field of waterproof coating technology, and more specifically to an environmentally friendly waterproof coating spraying device. Background Technology

[0002] Waterproofing coatings, as indispensable functional materials in modern construction engineering, are widely used for waterproofing roofs, basements, bridges, tunnels, and other structures. Their core function is to form a continuous, dense film on the substrate surface, preventing water penetration and thus protecting the building structure from water erosion. Currently, waterproofing coatings on the market are mainly divided into two categories: polyurethane waterproofing coatings and polymer cement-based waterproofing coatings. The former, using polyurethane and coal tar as main raw materials, possesses excellent elasticity and durability, but suffers from pollution problems caused by solvent evaporation; the latter is composed of water-based polymer emulsions and modified cement, offering better environmental performance, but with relatively weaker mechanical properties. Despite continuous advancements in material technology, limitations in construction equipment severely restrict the quality and efficiency of waterproofing projects.

[0003] Currently, waterproof coating application mainly relies on single-person handheld spray guns or rollers. This method is extremely inefficient for large-area construction (such as roofs, bridge decks, and large basements), and manual operation makes it difficult to ensure the uniformity and thickness of the coating. For example, in roof waterproofing projects, workers need to be exposed to outdoor high or low temperatures for extended periods, resulting in high physical exertion, slow construction speed, and extended project timelines. Furthermore, fluctuations in the spraying trajectory and pressure during manual application can lead to paint waste or localized missed areas, affecting the waterproofing effect.

[0004] Organic solvents (such as toluene and xylene) or isocyanate gases produced during the reaction in polyurethane coatings can volatilize in large quantities. These substances not only cause direct harm to the respiratory system and skin of construction workers (such as causing occupational diseases like asthma and dermatitis), but also diffuse into the surrounding environment, forming volatile organic compound (VOC) pollution. Especially when applied in enclosed indoor spaces (such as basements and bathrooms), harmful gases accumulate and are difficult to expel, potentially leading to acute poisoning or long-term health risks. Although some water-based coatings have improved environmental friendliness, existing equipment lacks waste gas collection and treatment capabilities, and the pollution problem remains fundamentally unresolved.

[0005] Current technologies typically separate substrate cleaning and paint spraying into two independent processes. The cleaned surface may re-adhere to dust, oil, or moisture while waiting for spraying, leading to decreased coating adhesion. For example, in bridge waterproofing construction, if the cleaned concrete bridge surface is not sprayed promptly, dew or dust at night can damage the substrate treatment, ultimately causing problems such as blistering and peeling of the coating. This process separation not only increases the risk of rework but also reduces overall construction efficiency. Existing spraying equipment is mostly open-type, with paint atomization and solvent evaporation directly exposed to the environment. Although some equipment is equipped with simple protective covers, complete sealing is not possible, especially on complex facades or corners, where contaminants can still leak. Compared to other fields (such as automotive paint booths using negative pressure sealing + activated carbon adsorption technology), the sealing in building waterproofing construction is severely inadequate. Furthermore, paint particles rebounding from the spray can adhere to surrounding equipment or structures, causing secondary pollution and increasing cleanup costs.

[0006] Therefore, it is necessary to research an environmentally friendly waterproof coating spraying device. Summary of the Invention

[0007] Therefore, the purpose of this invention is to provide an environmentally friendly waterproof coating spraying device, which effectively solves the problems of low efficiency, poor coating uniformity, and high labor intensity in the existing construction waterproof coating construction, which mainly relies on manual handheld equipment for open spraying. At the same time, solvent-based coatings emit harmful gases (VOCs), endangering the health of construction workers and polluting the environment. In addition, the existing process separates cleaning and spraying, resulting in secondary pollution of the substrate and affecting the adhesion of the coating. Furthermore, the lack of sealed control during the spraying process causes paint splashing and exhaust gas diffusion, further aggravating pollution and material waste.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is: an environmentally friendly waterproof coating spraying device, comprising a frame, movable wheels, a cleaning mechanism, and a spraying mechanism; the bottom of the frame is provided with movable wheels, and the cleaning mechanism and the spraying mechanism are respectively arranged on the front and rear sides of the frame; The cleaning mechanism includes a cleaning hood, cleaning nozzles, a first cleaning roller, a second cleaning roller, and a negative pressure suction device. The cleaning hood is fixed to the front side of the vehicle frame. Multiple sets of cleaning nozzles are provided on the front side of the cleaning hood for positive pressure air rinsing of the construction surface. A suction head is provided on the rear side of the interior of the cleaning hood. The suction head is connected to the negative pressure suction device. The first and second cleaning rollers are respectively arranged at an angle on both sides of the suction head. Both cleaning rollers are driven by corresponding motors. The spraying mechanism includes a spray hood, a paint hopper, an air compressor, a paint main pipe, a high-pressure air main pipe, a paint nozzle assembly, and a positive pressure nozzle assembly. The spray hood is fixed to the rear side of the vehicle frame. An air pressure plate is provided on the outer periphery of the spray hood, and a positive pressure nozzle assembly is provided on the air pressure plate. The paint nozzle assembly is located inside the spray hood. The nozzle main pipe and the high-pressure air main pipe are provided on the sealing cover or the vehicle frame and are connected to the material inlet and air outlet of the paint nozzle assembly through corresponding branch pipes. The paint hopper and the air compressor are fixed on the vehicle frame and are respectively connected to the paint main pipe and the high-pressure air main pipe.

[0009] Furthermore, mounting slots are provided on both the front and rear sides of the vehicle frame. The cleaning hood and the spraying hood are fixed in the mounting slots by mounting plates. A support column is provided in the middle of the vehicle frame, and a top plate is provided on the upper part of the support column. The negative pressure suction device, the air compressor and the paint hopper are all installed on the top plate.

[0010] Furthermore, the positive pressure nozzle assembly is inclined inward at the bottom of the spray hood and generates compressed air toward the inside of the spray hood.

[0011] Furthermore, the inside of the spray hood is provided with a lifting seat, the paint nozzle assembly is fixed on the lifting seat, the lifting seat is provided with a lifting screw sleeve, and a positioning seat is provided on its side. The inside of the nozzle hood is provided with a positioning groove, and the upper part of the nozzle hood is provided with a lifting screw, which is threadedly connected to the lifting screw sleeve.

[0012] Furthermore, the air outlet of the air compressor is connected to the positive pressure nozzle, the high-pressure air main pipe, and the cleaning nozzle via corresponding pressure regulating valves.

[0013] Furthermore, the cleaning hood corresponds to the spraying hood, and the movable wheel is located in the middle area of ​​the frame, between the cleaning hood and the spraying hood.

[0014] Furthermore, the moving wheels include longitudinal wheels and transverse wheels. The longitudinal wheels are connected to the frame via a telescopic assembly. Under the action of the telescopic assembly, the longitudinal wheels can touch the ground and lift the frame, causing the transverse wheels to leave the ground.

[0015] Furthermore, the cleaning hood is provided with a first guide plate and a second guide plate, which are fixed in a figure-eight shape on both sides of the suction head. A cleaning roller frame is provided on the guide plate, and the cleaning roller is rotatably mounted on the cleaning roller frame and is connected to the drive motor mounted on the cleaning roller frame.

[0016] Furthermore, an L-shaped base is provided on the front side of the cleaning hood, and a cleaning nozzle assembly that is inclined from front to back is provided on the base.

[0017] Furthermore, the paint nozzle assembly includes multiple paint nozzles, each with a material inlet and an air inlet on its side, and an electromagnetic control valve for controlling its opening and closing on its rear side. All the electromagnetic control valves are connected to the main controller.

[0018] The beneficial effects of the above technical solution are as follows: The environmentally friendly waterproof coating spraying device of the present invention effectively solves the problems of spray atomization gas pollution, high labor intensity, low construction efficiency and poor spraying effect in the traditional manual spraying process through integrated cleaning, integrated spraying design, closed working environment and automated control, and has the following significant advantages: This invention utilizes separate cleaning and spraying mechanisms at the front and rear of the vehicle frame to achieve immediate spraying after surface cleaning, avoiding secondary contamination (such as dust and dew) and ensuring coating adhesion. Multiple sets of solenoid valves control the paint nozzles, combined with a lifting and adjusting structure, to achieve uniform spraying and avoid uneven thickness or missed areas caused by manual operation. This invention is suitable for large-area, high-efficiency operations. The equipment can be continuously moved for construction and is suitable for waterproof spraying operations on large flat surfaces such as roofs and bridge decks. Its efficiency far exceeds that of manual roller coating or handheld spraying, reducing the difficulty of construction and greatly improving the uniformity and adhesion of the waterproof coating, thus enhancing the spraying effect. This invention provides a closed-loop exhaust gas treatment system, resolving environmental and health hazards, improving the safety of the construction environment, and is suitable for indoor construction. Structurally, both the cleaning hood and the spraying hood adopt a sealed design, working in conjunction with a negative pressure suction device to collect dust and VOCs (such as isocyanates in polyurethane coatings), reducing the leakage of harmful gases and protecting the health of construction workers. Simultaneously, the positive pressure nozzle assembly around the spraying hood forms an inward airflow barrier, preventing the diffusion of atomized paint particles and reducing environmental pollution. In this invention, the guide plate of the cleaning mechanism works in conjunction with negative pressure suction to efficiently recover impurities from the substrate, avoiding rework caused by repeated contamination. The amount of paint sprayed is adjusted by a pressure regulating valve and a solenoid valve to reduce rebound and over-spraying, thus saving materials.

[0019] Meanwhile, the spraying height of this invention is adjustable to adapt to uneven substrates (such as bridge joints and basement walls), ensuring full coating coverage. Adjusting the spraying height according to the construction environment makes it suitable for more complex construction environments, and the longitudinal and lateral movement wheels can be switched via a telescopic assembly, facilitating lateral / longitudinal movement of the equipment to adapt to different construction paths.

[0020] Therefore, this invention integrates technologies such as high-pressure spraying, negative pressure adsorption, positive pressure sealing, and automatic cleaning to form a closed-loop construction process. By replacing manual labor with mechanization, it significantly improves the quality, efficiency, and environmental friendliness of waterproofing projects. It is especially suitable for waterproofing construction of large buildings and infrastructure and has broad market application prospects. Attached Figure Description Figure 1 This is a schematic diagram of an embodiment of the present invention; Figure 2 for Figure 1 Front view structural diagram; Figure 3 for Figure 1 A schematic diagram of the side view structure; Figure 4 for Figure 1 A schematic diagram of the structure viewed from below; Figure 5 This is a schematic diagram of another implementation structure of the moving wheel; Figure 6 This is a schematic diagram of the telescopic structure of the longitudinal transfer wheel; Figure 7 This is a schematic diagram of the implementation structure of the cleaning facility; Figure 8 for Figure 7 Front view structural diagram; Figure 9 for Figure 7 A top-view structural diagram; Figure 10 This is a schematic diagram of the implementation structure of the base; Figure 11 This is a schematic diagram of the implementation structure of the spraying mechanism; Figure 12 This is a schematic diagram of the hopper's implementation structure; Figure 13 This is a system block diagram of the present invention.

[0021] Reference numerals: 1-Frame, 2-Moving wheel, 201-Longitudinal transfer wheel, 202-Drive leg, 203-Connecting rod, 204-Lifting sleeve, 205-Lifting screw, 206-Transverse transfer wheel, 3-Support column, 4-Top plate, 5-Cleaning mechanism, 51-Cleaning hood, 52-Base, 53-Cleaning nozzle, 54-Suction head, 55-First guide plate, 56-Second guide plate, 57-First cleaning roller, 58-First... Two cleaning rollers, 59-drive motor, 6-spraying mechanism, 61-spraying hood, 62-air pressure plate, 63-positive pressure nozzle assembly, 64-paint nozzle, 641-lifting seat, 642-lifting screw sleeve, 643-lifting screw, 644-positioning seat, 645-positioning groove, 646-electromagnetic control valve; 65-paint main pipe, 66-high pressure air main pipe; 7-paint hopper, 8-air compressor, 9-negative pressure suction equipment. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1: This example aims to provide an environmentally friendly waterproof coating spraying device, mainly used for spraying waterproof coatings. Current technologies for large-area waterproof coating spraying generally rely on manual handheld equipment for open spraying, resulting in low efficiency, poor coating uniformity, and high labor intensity. Simultaneously, solvent-based coatings emit harmful gases (VOCs), endangering the health of construction workers and polluting the environment. Furthermore, existing processes separate cleaning and spraying, leading to secondary contamination of the substrate and affecting coating adhesion. The lack of sealed control during spraying causes paint splatter and exhaust gas diffusion, further exacerbating pollution and material waste. Therefore, this example provides an environmentally friendly waterproof coating spraying device. This device adopts a closed design, integrating negative pressure adsorption of harmful gases and positive pressure leak prevention functions, achieving continuous cleaning and spraying operations. Mechanized construction solves the problems of low efficiency, uneven coating, and severe pollution associated with traditional manual spraying.

[0023] Specifically, such as Figure 1-3 As shown, an environmentally friendly waterproof coating spraying device includes a frame 1, moving wheels 2, a cleaning mechanism 5, and a spraying mechanism 6. In the implementation structure, the frame 1 is a steel frame structure, and moving wheels 2 are provided at the bottom of the frame 1. The moving wheels 2 are electrically driven moving wheels or follower wheels, which are dragged forward by a power device. Their function is to provide the device with mobility.

[0024] In this embodiment, the cleaning mechanism 5 and the spraying mechanism 6 are respectively arranged on the front and rear sides of the frame 1; wherein the frame 1 moves forward, that is, the cleaning mechanism 5 first cleans the base surface and then performs the spraying operation. In terms of implementation structure, both are sealed structures, that is, cleaning and spraying are carried out in a sealed environment, and the two cooperate with each other to complete the spraying work on the base surface.

[0025] like Figure 6-8 As shown, the cleaning mechanism 5 includes a cleaning hood 51, a cleaning nozzle 53, a first cleaning roller 57, a second cleaning roller 58, and a negative pressure suction device 9, as... Figure 1-2 As shown, the cleaning cover 51 is fixed to the front side of the frame 1. The cleaning cover 51 has a cuboid structure with a hollow interior and an opening on the lower side facing the ground.

[0026] Multiple sets of cleaning nozzles 53 are provided on the front side of the cleaning hood 51. Specifically, multiple sets of cleaning nozzles 53 are fixed inside the cleaning hood 51, specifically along the left-right direction. The cleaning nozzles 53 are spaced apart and are used to perform positive pressure air pressure washing on the construction surface. In specific implementation, an L-shaped base 52 is provided on the front side of the cleaning hood 51. The cleaning nozzle set is installed on the base 52 and tilted from front to back, so that debris can be flushed into the cleaning hood 51 from the outside, while preventing the generated dust from spreading to the outside and causing dust pollution in the construction environment, ensuring the construction environment, and preventing dust from contaminating the applied waterproof coating layer.

[0027] To recover impurities, this embodiment has a suction head 54 located inside the rear of the cleaning hood 51. The suction head 54 is connected to the negative pressure suction device 9. The working principle of the negative pressure suction device 9 is based on airflow adsorption and filtration separation. It generates suction through a motor drive to suck in and collect dust and debris. Specifically, the negative pressure suction device 9 uses a motor to drive a fan to rotate at high speed, creating a low-pressure zone (negative pressure) at the suction port. External air is sucked in carrying dust and debris under the action of the air pressure difference. The sucked-in mixed airflow passes through a filtration system (such as a dust bag or HEPA filter) or a centrifugal separation device (such as a cyclone dust collector). Dust is trapped in the dust collection chamber, while clean air is discharged through the exhaust port.

[0028] The first cleaning roller 57 and the second cleaning roller 58 are respectively arranged at an inclination on both sides of the suction head 54, and both cleaning rollers are driven by a corresponding drive motor. In practice, the cleaning cover 51 is provided with a first guide plate 55 and a second guide plate 56. The first guide plate 55 and the second guide plate 56 are fixed in a figure-eight shape on both sides of the suction head 54. A cleaning roller frame is provided on the guide plate. The cleaning roller is rotatably mounted on the cleaning roller frame and is driven by a drive motor 59 mounted on the cleaning roller frame.

[0029] like Figure 4-5 As shown, the first cleaning roller 57 and the second cleaning roller 58 are distributed in a V-shape on the left and right sides of the suction head 54. The V-shape structure is larger at the front and gradually narrows towards the suction head 54. Through the guidance of the guide plate, the generated impurity particles can smoothly enter the suction port of the suction head 54. At the same time, due to the action of the cleaning nozzle 53, the overall air pressure on the front side of the cleaning hood 51 is high and the pressure on the rear side is low, which facilitates the airflow to the suction port. In addition, the cleaning rollers are equipped with cleaning brushes, which can further clean the coverage area of ​​the cleaning hood 51 and improve the cleaning effect. In addition, to enhance the cleaning effect of the cleaning hood 51 at the suction head 54, the number of cleaning nozzles 53 can be appropriately arranged at this location.

[0030] The cleaning roller enhances the cleaning effect on the base surface and agitates the movement of impurities on both sides of the suction head 54 to prevent accumulation and guide impurities toward the suction port.

[0031] The spraying mechanism 6 includes a spray hood 61, a paint hopper 7, an air compressor 8, a paint main pipe 65, a high-pressure air main pipe 66, a paint nozzle assembly, and a positive pressure nozzle assembly 63. In this embodiment, the spray hood 61 and the cleaning hood 51 have similar structures, both being hollow inside with an opening at the bottom. The spray hood 61 is fixed to the rear side of the frame 1 and corresponds to the cleaning hood 51 to perform spraying operations on the cleaned area.

[0032] A pressure plate 62 is provided on the outer periphery of the spray hood 61, and a positive pressure nozzle assembly 63 is provided on the pressure plate 62. This structure can generate compressed air on the outside of the spray hood 61 to prevent the gas generated during spraying from leaking outward. In this specific implementation, the positive pressure nozzle assembly 63 is inclined inward at the bottom of the spray hood 61 and generates compressed air towards the inside of the spray hood 61. A filter cover is provided on the upper part of the spray hood 61, and the filter cover is connected to a negative pressure suction device 9 to purify the harmful gases in the spray hood 61.

[0033] The paint nozzle assembly is housed inside the spray hood 61. The paint main pipe 65 and the high-pressure air main pipe 66 are mounted on the spray hood 61 or the frame 1, and are connected to the material inlet and air outlet of the paint nozzle assembly via corresponding branch pipes. The paint hopper 7 and the air compressor 8 are fixed on the frame 1 and are connected to the paint main pipe 65 and the high-pressure air main pipe 66, respectively. The paint nozzle assembly includes multiple paint nozzles 64, each with a material inlet and an air outlet on its side. An electromagnetic control valve 646 is located at the rear of each nozzle to control its opening and closing. All electromagnetic control valves 646 are connected to a main controller, which synchronously controls the opening and closing of the multiple paint nozzles.

[0034] In order to assemble the cleaning mechanism 5 and the spraying mechanism 6, this embodiment has mounting slots on both the front and rear sides of the frame 1. The cleaning cover 51 and the spraying cover 61 are both fixed in the mounting slots by mounting plates. A support column 3 is provided in the middle of the frame 1, and a top plate 4 is provided on the upper part of the support column 3. The negative pressure suction device 9, the air compressor 8 and the paint hopper 7 are all provided on the top plate 4.

[0035] Hopper structure, such as Figure 11 As shown, a conveying auger 71 is installed at the lower part of the paint hopper 7, and the outlet of the conveying auger 71 is connected to the main nozzle pipe via a pipeline. Figure 13 As shown, the air outlet of the air compressor 8 is connected to the positive pressure nozzle, the high-pressure air main pipe 66, and the cleaning nozzle 53 via corresponding pressure regulating valves. The negative pressure port of the negative pressure suction device 9 is connected to the filter cover and suction head 54 of the spray hood 61 via a pipe.

[0036] In operation, the frame 1 propels the equipment forward in a straight line. During movement, the cleaning nozzle 53 flushes the substrate surface with airflow from the front, washing impurities into the cleaning hood 51. Inside the cleaning hood 51, cleaning rollers and guide plates guide the impurities and further clean the substrate surface. The impurities are then collected by the suction head 54 into the negative pressure suction device 9. After cleaning, the substrate surface is then coated. Multiple paint nozzles are activated by the main controller. The spray nozzles utilize an air compressor 8 to provide a stable high-pressure airflow, propelling the paint flow. The paint is pressurized (typically 5-30 MPa), forcing it to be sprayed at high speed from the nozzles and atomized into fine particles, uniformly adhering to the object's surface, thus completing the cleaning and coating process. This invention integrates high-pressure spraying, negative pressure adsorption, positive pressure sealing, and automatic cleaning technologies to form a closed-loop construction process. By replacing manual labor with mechanization, it significantly improves the quality, efficiency, and environmental friendliness of waterproofing projects. It is particularly suitable for waterproofing construction of large buildings and infrastructure, and has broad market application prospects.

[0037] Example 2 further illustrates the moving structure of the frame 1.

[0038] In this embodiment, the cleaning hood 51 corresponds to the spraying hood 61. The movable wheel 2 is located in the middle area of ​​the frame 1, between the cleaning hood 51 and the spraying hood 61. The movable wheel 2 includes a longitudinal wheel 201 and a transverse wheel 206. The longitudinal wheel is connected to the frame 1 via a telescopic assembly. Under the action of the telescopic assembly, the longitudinal wheel 201 can touch the ground and lift the frame 1, causing the transverse wheel 206 to leave the ground. The telescopic assembly is as follows: Figure 13 As shown, the lifting sleeve moves up and down through the lifting screw 205, and the driving legs 202 on both sides move inward or outward through the connecting rod 203, so as to realize the swing-type lifting motion of the longitudinal transfer wheel, lift the frame 1, and make the transverse transfer wheel off the ground, so as to facilitate its longitudinal movement and change its construction point.

[0039] Example 3 further illustrates the implementation structure of the spray coating cover 61.

[0040] In this embodiment, a lifting seat 641 is provided inside the spray nozzle 61, and the paint nozzle 64 group is fixed on the lifting seat 641. A lifting screw sleeve 642 is provided on the lifting seat 641, and a positioning seat 644 is provided on its side. A positioning groove 645 is provided inside the nozzle cover 61, and a lifting screw 643 is provided on the upper part of the nozzle cover. The lifting screw is threadedly connected to the lifting screw sleeve.

[0041] This embodiment uses a lifting structure to adjust the spraying height of the paint nozzle, and combines this with the spraying intensity to adjust the spraying density.

[0042] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. The basic concept of the present invention lies in integrating technologies such as high-pressure spraying, negative pressure adsorption, positive pressure sealing, and automatic cleaning to form a closed-loop construction process. By replacing manual labor with mechanization, the quality, efficiency, and environmental friendliness of waterproofing projects are significantly improved. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An environmentally friendly waterproof coating spraying device, characterized in that: The utility model provides a kind of floor cleaning and spraying vehicle, including frame, mobile wheel, cleaning mechanism and spraying mechanism;The bottom of the frame is provided with mobile wheel, and the cleaning mechanism and spraying mechanism are respectively arranged in the front and rear sides of frame; The cleaning mechanism includes cleaning cover, cleaning nozzle, first cleaning roller, second cleaning roller and negative pressure suction equipment, the cleaning cover is fixed in the front side of frame, and the front side of cleaning cover is provided with multiple groups of cleaning nozzles, for positive pressure air pressure flushing to construction ground;The inside rear side of cleaning cover is provided with suction head, and suction head is communicated with the negative pressure suction equipment, and the first cleaning roller and second cleaning roller are respectively arranged in the two sides of suction head in the form of inclination, and two cleaning rollers are all transmissionally connected with corresponding drive motor; The spraying mechanism includes spraying cover, coating hopper, air compressor, coating main pipe, high-pressure gas main pipe, coating nozzle group and positive pressure nozzle group;The spraying cover is fixed in the rear side of frame, and air pressure plate is provided on the outer periphery of spraying cover, and positive pressure nozzle group is provided on air pressure plate, and coating nozzle group is arranged in the inside of spraying cover, and nozzle main pipe and high-pressure gas main pipe are arranged on sealing cover or frame, and are communicated with the material port and gas port of coating nozzle group through corresponding branch pipe, and coating hopper and air compressor are fixed on frame, and are respectively communicated with coating main pipe and high-pressure gas main pipe.

2. The environment-friendly waterproof coating spraying device according to claim 1, characterized in that: The front and rear sides of frame are both provided with mounting groove, and the cleaning cover and spraying cover are both fixed in mounting groove through mounting plate, and the middle part of frame is provided with support column, and the upper part of support column is provided with top plate, and negative pressure suction equipment, air compressor and coating hopper are all arranged on top plate.

3. The environmentally friendly waterproof coating spraying device according to claim 1, characterized in that: The positive pressure nozzle group is arranged in the bottom of spraying cover in the form of inclination towards inside, and generates air pressure towards the inside of spraying cover.

4. The environmentally friendly waterproof coating spraying device according to claim 1, characterized in that: The inside of spraying cover is provided with lifting seat, and coating nozzle group is fixed on lifting seat, and lifting seat is provided with lifting screw sleeve on the side, and is provided with positioning seat, and the inside of nozzle cover is provided with positioning groove, and the upper part of nozzle cover is provided with lifting screw rod, and lifting screw rod is threadedly connected with lifting screw sleeve.

5. The environmentally friendly waterproof coating spraying device according to claim 1, characterized in that: The air outlet of air compressor is respectively communicated with positive pressure nozzle, high-pressure gas main pipe and cleaning nozzle through corresponding pressure regulating valve.

6. The environmentally friendly waterproof coating spraying device according to claim 1, characterized in that: The cleaning cover corresponds with spraying cover, and mobile wheel is arranged in the middle area of frame and is between cleaning cover and spraying cover.

7. The environmentally friendly waterproof coating spraying device according to claim 6, characterized in that: The mobile wheel includes longitudinal mobile wheel and transverse mobile wheel, and longitudinal mobile wheel is connected with frame through telescopic assembly, and under the action of telescopic assembly, longitudinal mobile wheel can lift frame to make transverse mobile wheel off the ground.

8. The environmentally friendly waterproof coating spraying device according to claim 1, characterized in that: The first guide plate and second guide plate are fixed in the two sides of suction head in the form of eight, and cleaning roller frame is arranged on guide plate, and cleaning roller is rotationally arranged on cleaning roller frame and is transmissionally connected with drive motor assembled on cleaning roller frame.

9. The environmentally friendly waterproof coating spraying device according to claim 1, characterized in that: L-shaped base is arranged in the front side of cleaning cover, and cleaning nozzle group is arranged on base in the form of inclination from front to back.

10. The environmentally friendly waterproof coating spraying device according to any one of claims 1-9, characterized in that: The coating nozzle group includes multiple coating nozzles, and the side of each coating nozzle is provided with material port and gas port, and electromagnetic control valve for controlling opening and closing is arranged on the rear side, and multiple electromagnetic control valves are connected with general controller.

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