A spraying device and spraying method for a street lamp pole

Abstract

The application discloses a kind of street lamp pole's spraying equipment and spraying method, belong to street lamp pole spraying technical field.It includes spraying frame, recycling box and adsorption device, spraying frame is set in recycling box upper, spraying frame is provided with two load cross beams, respectively carries street lamp pole base and upper section, and street lamp pole upper section load cross beam is equipped with angle steel support piece, can reduce spraying blind area and adapt to variable-diameter pole body;Recycling box inside is provided with vertical partition plate and forms two independent cavities, adapts double-color plastic powder partition recovery;Recycling box side is equipped with the adsorption device of grid barrel and obliquely placed guide plate, can adsorb suspended dust and automatically flow recovery.The application spraying method process simplifies, can complete double-color partition spraying and plastic powder recovery operation simultaneously.The application equipment structure is simple, and operation and maintenance cost is low, realizes plastic powder efficient recovery, effectively avoids double-color plastic powder color mixing defect, improves workshop operation environment, improves spraying finished product quality and production efficiency, meets green energy-saving production demand, with good industrialized popularization and application value.

Description

Technical Field

[0001] This invention belongs to the field of street light pole spraying technology, specifically relating to a street light pole spraying equipment and spraying method. Background Technology

[0002] Streetlight poles, as urban infrastructure, are exposed to the outdoors for extended periods, constantly subjected to harsh environmental conditions such as rain erosion and ultraviolet radiation. To ensure their lifespan and enhance their aesthetic appeal, streetlight poles must undergo surface protective coating treatment after molding. Currently, the industry mainstream adopts environmentally friendly electrostatic powder coating technology to replace traditional paint spraying. Environmentally friendly powder coating has advantages such as being solvent-free, pollution-free, and having strong adhesion, fully meeting the green and environmentally friendly production requirements of modern industry, and has become the mainstream process for streetlight pole surface treatment.

[0003] Existing spraying equipment and processes still have significant technical shortcomings. Traditional open spraying structures cannot effectively constrain powder diffusion, leaving large amounts of fine, unattached powder dust suspended in the workspace. This not only results in high raw material loss and production costs but also easily causes dust pollution in the workshop, harming the health of workers and posing a dust explosion hazard. Meanwhile, conventional recovery structures can only collect large, vertically falling powder particles, with low recovery rates for suspended dust. Furthermore, the lack of zoned collection structures makes them unsuitable for the two-color spraying requirements of streetlight poles, easily leading to powder mixing and color differences in finished products. In addition, high-end automated spraying equipment has complex structures and high procurement and maintenance costs, making it difficult for small and medium-sized enterprises to adopt. Simple equipment, on the other hand, lacks sufficient spraying precision and dust collection performance, making it difficult to balance production quality, environmental requirements, and production costs. Overall production efficiency and finished product yield are low, failing to meet the demands of standardized and green mass production.

[0004] In conclusion, developing a street light pole spraying equipment and its supporting spraying method that is simple in structure, low in cost, has high powder recovery efficiency, and can achieve color-separated recycling has significant practical value and economic significance. Summary of the Invention

[0005] The purpose of this invention is to overcome the aforementioned defects and shortcomings in the existing technology and to provide a spraying device and method for street light poles. It aims to achieve efficient recovery of excess plastic powder during the spraying process, reducing production costs; simultaneously, by optimizing the airflow adsorption and guiding structure, it solves the problem of collecting airborne plastic powder, and through zoned design, it achieves the classified recovery of plastic powder of different colors.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A street light pole spraying device includes a spraying frame, a recycling bin, and multiple adsorption devices. The spraying frame is fixedly mounted above the recycling bin. The street light pole to be processed is placed on the bearing end face of the spraying frame. The operator sprays environmentally friendly plastic powder onto the outer wall of the street light pole using a handheld nozzle to complete the spraying operation. The recycling bin is a hollow box structure with an open top, used to collect excess plastic powder that falls vertically during the spraying process, achieving centralized collection of the plastic powder. The adsorption devices are all fixedly installed on the rear outer wall of the recycling bin, used to adsorb suspended plastic powder dust flying in the spraying operation space.

[0008] Furthermore, a vertical partition plate is fixedly installed inside the recycling box. The partition plate divides the inner cavity of the recycling box into a first spraying recycling chamber and a second spraying recycling chamber, which are independent and sealed from each other. The two independent chambers are not connected to each other, which can realize the separate collection and independent storage of two colors of plastic powder, and completely avoid the problem of plastic powder mixing during the two-color spraying process.

[0009] Furthermore, the adsorption device includes a shell, a grid cylinder assembly, and an inclined guide plate. The shell is fixedly connected to the rear wall of the recycling box. The shell is an open rectangular hollow box structure with an opening on the front end face facing the spraying operation space. The grid cylinder assembly is vertically installed inside the shell. The inclined guide plate is obliquely fixed directly below the grid cylinder assembly. The lower end of the inclined guide plate extends through into the inside of the recycling box. The plastic powder dust adsorbed and enriched on the inner wall of the grid cylinder can automatically slide down along the inclined guide plate into the inside of the recycling box, realizing the recycling of suspended dust.

[0010] Furthermore, the spraying frame includes two parallel and fixed load-bearing beams, which are arranged in a corresponding manner along the length of the street light pole, and are used to support the thick section of the base of the street light pole and the thin section of the upper part of the street light pole, respectively.

[0011] Furthermore, angle steel supports are fixedly installed on the supporting crossbeam of the upper, thinner section of the streetlight pole. These angle steel supports utilize an angular, linear support structure to support the streetlight pole body. Utilizing the angular support structure of the angle steel to support the thinner section of the streetlight pole effectively reduces the contact area between the workpiece and the crossbeam, significantly reducing blind spots during spraying. It also accommodates the variable diameter structure of streetlight poles (thinner at the top, thicker at the bottom), allowing for stable placement of streetlight poles with different taper specifications, resulting in better versatility and coating integrity.

[0012] Furthermore, the inclined guide plate has an angle of inclination of 30° to 45° with the horizontal plane. This angle ensures that the plastic powder dust adsorbed by the grid cylinder assembly slides down quickly and smoothly under the action of gravity, avoiding dust from sticking and accumulating on the surface of the guide plate, and ensuring the continuity and efficiency of material flow.

[0013] Furthermore, the grid cylinder assembly includes multiple grid cylinders with hollowed-out mesh adsorption structures, which can efficiently capture light plastic powder dust suspended in the air. Each grid cylinder adopts a detachable installation structure and is assembled with the shell, which makes it convenient for operators to regularly disassemble, clean, and replace the grid cylinders, avoid clogging of the mesh pores and affect the dust adsorption effect, and reduce the difficulty of equipment operation and maintenance.

[0014] Furthermore, the top of the grid cylinder is detachably connected to the upper part of the housing by a snap-fit.

[0015] Furthermore, the vertical partition plate is at the same height as the inner cavity of the recycling bin, and the vertical partition plate is sealed and welded to the inner wall of the recycling bin.

[0016] Furthermore, the bottom sides of the recycling box are respectively provided with unloading ports for the first spray recycling chamber and the second spray recycling chamber.

[0017] Furthermore, a sealing cover is installed at the discharge port, and a sealing strip is provided on the inner side of the sealing cover. The sealing cover can be opened periodically to recover and take out the plastic powder inside the box. After filtration and screening, it can be reused in the spraying operation to realize the recycling of materials.

[0018] This invention also discloses a spraying method for street light poles, applied to the aforementioned spraying equipment for street light poles, comprising the following steps:

[0019] S1. Equipment pretreatment and workpiece clamping: Before operation, conduct a comprehensive inspection of the equipment assembly status, confirm that the grid cylinder and inclined guide plate are working properly, and close the bottom sealing cover of the recycling box; place the street light pole, which has been pretreated by rust removal and deburring, stably on the two load-bearing crossbeams for positioning and stability.

[0020] S2. Zoned spraying and synchronous dust recovery: Select the corresponding plastic powder and matching recovery chamber according to the two-color spraying process. Use the handheld nozzle to spray the outer wall of the street light pole at a constant distance and uniform speed. Unattached plastic powder falls vertically into the corresponding recovery chamber. The adsorption device adsorbs the suspended dust in the space through the grid tube. The dust is automatically guided and slid down into the recovery chamber along the inclined guide plate to complete the recovery.

[0021] S3. Material recycling and reuse: After the single street light pole is sprayed, allow the dust to settle completely, clean the residual plastic powder from the nozzle, and then spray the batch of workpieces in sequence. After the batch spraying is completed, open the sealing cover of the discharge port on both sides, take out the recycled plastic powder in the cavity, and store it for recycling after removing impurities and screening.

[0022] Beneficial effects: Compared with the prior art, the present invention has significant technical advantages and application value.

[0023] 1. The equipment of this invention has a simple structure, no complex and precision components, and low manufacturing, installation and maintenance costs, making it suitable for widespread use by various large, medium and small processing enterprises;

[0024] 2. The equipment adopts a multi-stage recycling structure with bottom material receiving, side grid adsorption and inclined plate flow guidance, which can simultaneously collect fallen plastic powder and suspended dust, greatly reducing raw material loss, and effectively eliminating dust pollution and safety hazards in the workshop, with excellent green environmental protection performance.

[0025] 3. By using the built-in vertical partition plate of the recycling box, two independent recycling chambers are formed, which can realize the separate spraying and storage of different colored plastic powders, completely eliminating color mixing and color difference defects, and greatly improving the yield of sprayed products and production efficiency.

[0026] 4. The supporting spraying method has a simplified process and is easy to operate. It can realize the recycling and reuse of plastic powder, which is in line with the concept of green and energy-saving production and has extremely high value for industrial promotion. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 2 This is a front view of an embodiment of the present invention;

[0029] Figure 3 This is a side view of an embodiment of the present invention;

[0030] Figure 4 This is a top view of an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1-Spraying rack; 101-Bearing beam; 102-Angle steel; 2-Recycling box; 201-Divider plate; 202-First spraying recycling chamber; 203-Second spraying recycling chamber; 3-Adsorption device; 301-Shell; 302-Grid cylinder assembly; 303-Inclined guide plate; 4-Street lamp pole. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1

[0035] This embodiment provides a spraying device for street light poles, such as... Figures 1-4As shown, the system includes a spraying rack 1, a recycling bin 2, and an adsorption device 3. The spraying rack 1 is fixedly mounted directly above the recycling bin 2, and the entire system is bolted together, ensuring a secure connection and facilitating disassembly and maintenance. The streetlight pole 4 to be processed is placed on the bearing end face of the spraying rack 1. The operator holds a nozzle and sprays environmentally friendly plastic powder evenly onto the outer wall of the streetlight pole to complete the surface coating operation. The recycling bin 2 is a rectangular hollow box structure with a fully open top. The opening area is larger than the bearing area of ​​the spraying rack 1, which can fully collect all excess plastic powder that falls vertically during the spraying process, eliminating any dead corners. The adsorption device 3 is fixedly installed in the middle of the rear outer wall of the recycling bin and welded to the side wall of the recycling bin 2. It is specifically used to adsorb the flying and suspended light plastic powder dust in the spraying operation space, achieving the collection and treatment of fugitive dust.

[0036] The adsorption device 3 consists of two sets, including a housing 301, a grid cylinder assembly 302, and an inclined guide plate 303. The housing 301 is an open rectangular hollow box structure with an opening on the front end facing the spraying work space, ensuring that dust can quickly enter the equipment. The two sets of grid cylinder assemblies 302 are vertically installed inside their respective housings 301. Each grid cylinder assembly includes three perforated mesh grid cylinders, which can accurately capture suspended fine plastic powder dust, with high adsorption efficiency and low clogging. Each grid cylinder adopts a top-hook detachable installation structure, with the hooks fixed to the upper inner side of the housing. Disassembly and assembly require no tools, facilitating daily cleaning, unclogging, and replacement by operators. It can stably maintain high adsorption performance over long-term use.

[0037] The inclined guide plate 303 is made of smooth stainless steel sheet and is fixedly installed at an angle directly below the grid cylinder assembly 302. It is arranged with a left-lower, right-higher inclination, with an angle of 35° to the horizontal plane. This angle is the optimal guiding angle, ensuring that the plastic powder dust accumulated on the inner wall of the grid cylinder slides down quickly under gravity, while avoiding dust splashing due to an excessively large angle and dust accumulation and adhesion due to an excessively small angle. The lower end of the inclined guide plate extends through the side wall of the shell into the inside of the recycling box, achieving directional guidance and recycling of the adsorbed dust.

[0038] A vertical partition plate 201 is fixedly welded inside the recycling bin 2. The height of the partition plate 201 is the same as the height of the internal cavity of the recycling bin 2. The plate is sealed without gaps, which can divide the internal cavity of the recycling bin into two completely independent and sealed cavities, namely the first spraying recycling cavity 202 and the second spraying recycling cavity 203. The first spraying recycling cavity 202 on the left is dedicated to the spraying, receiving and recycling of blue environmentally friendly plastic powder, while the second spraying recycling cavity 203 on the right is dedicated to the spraying, receiving and recycling of white environmentally friendly plastic powder. The two cavities are completely isolated, which completely eliminates the mixing of two-color plastic powders and ensures the quality of the finished product of two-color spraying.

[0039] The spraying frame 1 includes two parallel load-bearing beams 101, which are assembled front and rear along the length of the streetlight pole 4, respectively supporting the thicker base section and the thinner upper section of the streetlight pole 1. Angle steel 102 supports are fixedly mounted on the load-bearing beam 101 corresponding to the upper section of the streetlight pole. The linear angular support of the angle steel 102 supports the thinner section structure, significantly reducing the contact area between the workpiece and the support structure, minimizing spraying dead zones, ensuring complete circumferential spraying of the pole, and accommodating the tapered diameter structure of the streetlight pole (thinner at the top and thicker at the bottom), thus accommodating the positioning of various conventional tapered streetlight poles. The angle steel supports are fixed to the corresponding load-bearing beams by bolts, allowing for convenient assembly and disassembly and stable positioning. This effectively prevents the streetlight pole from shifting, shaking, or slipping during spraying, ensuring uniform spraying and operational safety.

[0040] The bottom left and right sides of the recycling box 2 are respectively provided with rectangular discharge ports for the first and second spray coating recycling chambers. The size of the discharge ports is adapted to conventional material recycling operations. Each discharge port is equipped with a sealing cover plate. The sealing cover plate is pasted with a sealing strip. When closed, the chamber can be completely sealed to prevent dust from overflowing. When opened, the recycled plastic powder in the chamber can be quickly taken out to complete the material recycling and reuse.

[0041] Example 2

[0042] This embodiment provides a method for spraying street light poles, which uses the spraying equipment described in Embodiment 1 to complete the process, and specifically includes the following detailed operation steps:

[0043] S1. Equipment Pre-treatment and Workpiece Clamping: Before operation, thoroughly inspect the equipment assembly status to ensure that the grid cylinder is installed in place, the inclined guide plate is unobstructed, the recycling bin is well sealed, and the bottom sealing cover is closed. After pre-treating the street light pole by removing rust and deburring, place it stably on the two load-bearing crossbeams to ensure the workpiece is horizontal and stable.

[0044] S2. Zoned spraying and synchronous dust recovery: Select the corresponding color of plastic powder and the matching recovery chamber according to the spraying process requirements. The operator holds the nozzle and sprays the area to be sprayed on the street light pole at a constant distance and uniform speed. The plastic powder adheres and forms a protective coating. The scattered plastic powder falls into the recovery chamber. The suspended dust enters the equipment through the adsorption holes and is adsorbed by the grid cylinder. It is then guided to settle along the 35° inclined guide plate to complete the recovery.

[0045] S3. Material recycling and reuse: After spraying, allow the material to settle and clean the residual plastic powder from the nozzle. Allow the material to settle completely and wait for the workpiece to cure before replacing it with the next street light pole and repeating the above spraying operation. After the batch of workpieces is sprayed, remove the plastic powder from both sides of the cavity, remove impurities, sieve, and store for reuse.

[0046] In summary, the powder coating equipment and method for streetlight poles provided by this invention are simple in structure, low in cost, highly efficient in powder recovery, and capable of multi-color zoned recovery, possessing extremely high industrial practical value. This equipment is not only suitable for powder coating of streetlight poles, but can also be extended to the powder coating treatment of other long and narrow metal workpieces (such as traffic sign poles, guardrail posts, light poles, flagpoles, pipes, etc.), showing broad application prospects.

[0047] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A spraying device for street light poles, characterized in that: It includes a spraying rack (1), a recycling box (2) and multiple adsorption devices (3). The spraying rack (1) is fixedly mounted on the top of the recycling box (2). The recycling box (2) is a hollow box structure with an open top. The adsorption devices (3) are all fixedly installed on the rear outer wall of the recycling box (2). The recycling box (2) is fixedly installed with a vertical partition plate (201), which divides the inner cavity of the recycling box (2) into a first spray recycling chamber (202) and a second spray recycling chamber (203) that are independent and sealed from each other. The adsorption device (3) includes a housing (301), a grid cylinder assembly (302), and an inclined guide plate (303). The housing (301) is fixedly connected to the rear side wall of the recycling box (2). The housing (301) is an open rectangular hollow box structure with an opening on the front end face facing the spraying operation space. The grid cylinder assembly (302) is vertically installed inside the housing (301). The inclined guide plate (303) is inclinedly fixed directly below the grid cylinder assembly (302), and the lower end of the inclined guide plate (303) extends through into the inside of the recycling box (2).

2. The spraying equipment for street light poles according to claim 1, characterized in that: The spraying frame (1) includes two parallel fixed load-bearing beams (101). The two load-bearing beams (101) are arranged in a corresponding manner along the length of the street light pole (4), and are used to support the thick section of the base of the street light pole and the thin section of the upper part of the street light pole, respectively.

3. The spraying equipment for street light poles according to claim 3, characterized in that: An angle steel (102) support is fixedly installed on the upper thin pole section of the street light pole (101). The angle steel (102) support adopts an angular linear support structure to support the street light pole body.

4. The spraying equipment for street light poles according to claim 1, characterized in that: The angle between the inclined guide plate (303) and the horizontal plane is set to 30° to 45°.

5. The spraying equipment for street light poles according to claim 1, characterized in that: The grid tube assembly (302) includes multiple grid tubes with hollowed-out mesh adsorption structures, and each grid tube is assembled with the shell using a detachable installation structure.

6. The spraying equipment for street light poles according to claim 5, characterized in that: The top of the grid cylinder is detachably connected to the upper part of the shell by a snap fastener.

7. The spraying equipment for street light poles according to claim 1, characterized in that: The vertical partition plate (201) is at the same height as the inner cavity of the recycling box (2), and the vertical partition plate is sealed and welded to the inner wall of the recycling box.

8. The spraying equipment for street light poles according to claim 7, characterized in that: The bottom sides of the recycling box (2) are respectively provided with unloading ports for the first spray recycling chamber and the second spray recycling chamber.

9. The spraying equipment for street light poles according to claim 8, characterized in that: A sealing cover is installed at the discharge port, and a sealing strip is provided on the inner side of the sealing cover.

10. A method for spraying paint on street light poles, characterized in that: The application of the street light pole spraying equipment according to any one of claims 1 to 9 includes the following steps: S1. Equipment pretreatment and workpiece clamping: Before operation, conduct a comprehensive inspection of the equipment assembly status, confirm that the grid cylinder and inclined guide plate are working properly, and close the bottom sealing cover of the recycling box; place the street light pole, which has been pretreated by rust removal and deburring, stably on the two load-bearing crossbeams for positioning and stability. S2. Zoned spraying and synchronous dust recovery: Select the corresponding plastic powder and matching recovery chamber according to the two-color spraying process. Use the handheld nozzle to spray the outer wall of the street light pole at a constant distance and uniform speed. Unattached plastic powder falls vertically into the corresponding recovery chamber. The adsorption device adsorbs the suspended dust in the space through the grid tube. The dust is automatically guided and slid down into the recovery chamber along the inclined guide plate to complete the recovery. S3. Material recycling and reuse: After the single street light pole is sprayed, allow the dust to settle completely, clean the residual plastic powder from the nozzle, and then spray the batch of workpieces in sequence. After the batch spraying is completed, open the sealing cover of the discharge port on both sides, take out the recycled plastic powder in the cavity, and store it for recycling after removing impurities and screening.

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