Negative pressure cleaning device based on coating machine

Abstract

The invention discloses a negative pressure cleaning device based on a coating machine, and relates to the technical field of cleaning devices, the negative pressure cleaning device comprises a coating assembly, the coating assembly comprises a coating machine base, a coating machine covering frame is fixed to the top of the coating machine base, and a coating piece is arranged in an inner cavity of the coating machine covering frame. Through the collaborative design of an existing negative pressure adsorption limiting device and a multifunctional cleaning module of the integrated coating machine, the obvious defects of high cost, tedious maintenance, limited cleaning effect, idle negative pressure resources and the like depending on an independent negative pressure device are effectively overcome, the separated design of a vacuum pump or a fan is abandoned, meanwhile, an airflow guide structure is optimized, and the service life of the coating machine is prolonged. The cleaning capacity for dust adhered to the surface of a material is enhanced, the situation that residual impurities affect the uniformity of a coating is avoided, idle negative pressure resources are converted into cleaning power through reuse of an air pressure pipeline, energy consumption waste is eradicated, collaborative operation of cleaning and positioning is achieved, and key technical support is provided for high-efficiency and energy-saving upgrading of the coating machine technology.

Description

Technical Field

[0001] This invention relates to the field of cleaning device technology, and in particular to a negative pressure cleaning device based on a coating machine. Background Technology

[0002] During the daily operation and maintenance of coating machines, it is often necessary to use a negative pressure cleaning device based on the coating machine to efficiently adsorb and clean dust, residual paint particles and other impurities from the coating nozzles, worktables and equipment gaps. This prevents the coating nozzles from becoming clogged, bubbles or spots from appearing in the coating layer, or accelerated wear of equipment parts due to the accumulation of impurities, which would affect the working efficiency of the coating machine, the quality of the coated products and the service life of the equipment.

[0003] Existing negative pressure cleaning devices based on coating machines have significant shortcomings in functional integration and resource utilization. They rely on independent negative pressure generating devices to achieve cleaning operations. The additional vacuum pumps or fans not only increase equipment purchase costs but also lead to cumbersome installation and maintenance procedures due to the need for separate pipeline and control systems. This separate design results in a limited cleaning function, only capable of basic dust collection. The cleaning effect on dust that may adhere to the surface of the material before coating is limited, and residual impurities can easily affect the uniformity of the coating. At the same time, the device is not linked with the existing negative pressure adsorption and limiting devices of the coating machine, such as the vacuum adsorption system used to fix the substrate during coating, resulting in idle negative pressure resources and wasted energy. It is impossible to achieve coordinated cleaning and positioning operations through the reuse of air pressure pipelines. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing negative pressure cleaning devices based on coating machines, the present invention is proposed.

[0006] Therefore, the problem to be solved by this invention is how to solve the problem of poor cleaning effect and cumbersome self-cleaning.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a negative pressure cleaning device for a coating machine, comprising: a coating assembly including a coating machine base, a coating machine cover frame fixed to the top of the coating machine base, a coating component disposed in the inner cavity of the coating machine cover frame, the coating component being fixed to the top of the coating machine base; and a limiting cleaning assembly disposed in the inner cavity of the coating machine cover frame, including a limiting member fixed to one side of the coating component, a dustproof component placed on the top of the limiting member, a pneumatic drive component disposed on one side of the limiting member, a dust collection component disposed on the top of the limiting member, a self-locking component fixed to the surface of the dust collection component, a pneumatic drive transmission component fixed to the bottom of the self-locking component, a self-cleaning component fixed to one side of the pneumatic drive component, and a filter component disposed at the bottom of the limiting member.

[0008] As a preferred embodiment of the negative pressure cleaning device based on the coating machine described in this invention, the limiting member includes a limiting base fixed to the surface of the coated part, a negative pressure adsorption plate is placed on the top of the limiting base, a fixing seat is fixed on one side of the limiting base, and a spline is fixed on the top of the fixing seat.

[0009] As a preferred embodiment of the negative pressure cleaning device based on the coating machine described in this invention, the self-cleaning component includes a fixed frame fixed to the bottom of the limiting base, an elastic airbag movably connected to one side of the fixed frame, a second connecting pipe fixed to one side of the elastic airbag, a sealing airbag fixed to one side of the second connecting pipe, a squeezing plate movably connected to one side of the elastic airbag, a first piston rod fixed to one side of the squeezing plate, a first air chamber sleeved on the surface of the first piston rod, a one-way pressure valve fixed to the top of the first air chamber, and a first connecting pipe fixed to the top of the one-way pressure valve.

[0010] As a preferred embodiment of the negative pressure cleaning device based on a coating machine according to the present invention, the air drive component includes a high-pressure vortex air pump fixed to the bottom of a limiting base. A first connecting pipe is fixed to one side of the high-pressure vortex air pump, and a second connecting pipe is fixed to the other side of the high-pressure vortex air pump. A single-hole rotating pipe is movably connected to one side of the second connecting pipe. A fixed vertical plate is fixed to the bottom of the limiting base. The single-hole rotating pipe is movably connected to one side of the fixed vertical plate. A fixed sleeve is fitted on the surface of the single-hole rotating pipe. The fixed sleeve is fixed to the bottom of the high-pressure vortex air pump. A third exhaust pipe, a second exhaust pipe, and a first exhaust pipe are respectively fixed on the surface of the fixed sleeve. A rotating handle is fitted on the surface of the single-hole rotating pipe.

[0011] As a preferred embodiment of the negative pressure cleaning device based on the coating machine described in this invention, the dust collection component includes a dust collection top shell disposed on the top of the limiting base, a first dust collection pipe fixed on the top of the dust collection top shell, a limiting sleeve sleeved on the surface of the first dust collection pipe, a sealing gas ring fixed on the inner wall of the limiting sleeve, and a second dust collection pipe disposed at the bottom of the first dust collection pipe.

[0012] As a preferred embodiment of the negative pressure cleaning device based on a coating machine according to the present invention, the self-locking component includes a fixing block fixed to one side of a limiting base, a second pressing block that cooperates with the limiting base is slidably connected to the inner wall of the fixing block, a return spring is sleeved on the surface of the second pressing block, a first transmission plate is provided at the bottom of the fixing block, a sliding vertical rod is fixed at the top of the first transmission plate, a second transmission plate is sleeved on the surface of the sliding vertical rod, a connecting spring is sleeved on the sliding vertical rod, a movable plate is fixed at the top of the sliding vertical rod, a plug-in block is fixed at the bottom of the movable plate, a connecting plug-in plate that cooperates with the plug-in block is sleeved on the surface of the limiting sleeve, and a first pressing rod that cooperates with the second pressing block is fixed at the top of the first transmission plate.

[0013] As a preferred embodiment of the negative pressure cleaning device based on the coating machine described in this invention, the dustproof component includes a dustproof baffle movably connected to the top of the limiting base, and a damping spline seat that cooperates with the fixed base is fixed on one side of the dustproof baffle.

[0014] As a preferred embodiment of the negative pressure cleaning device for a coating machine described in this invention, the pneumatic drive component includes a second air chamber fixed to the bottom of the coating machine base. A third piston rod is movably connected to one side of the inner wall of the second air chamber. The third piston rod is fixed to the bottom of the first transmission plate. A second piston rod is movably connected to the other side of the inner wall of the second air chamber. A rubber spring post is sleeved on the surface of the second piston rod. A three-way pipe is fixed to the bottom of the second air chamber. A connecting hose is fixed to the bottom of the three-way pipe. The connecting hose is fixed to the surface of the third exhaust pipe.

[0015] As a preferred embodiment of the negative pressure cleaning device based on the coating machine described in this invention, the filter element includes a filter shell fixed to the bottom of the limiting base, a positioning block fixed to the inner wall of the filter shell, a filter cotton movably connected to one side of the positioning block, and a dust collection bottom shell embedded at the bottom of the filter shell.

[0016] As a preferred embodiment of the negative pressure cleaning device based on the coating machine described in this invention, the unidirectional backflush nozzle is movably connected to the inner wall of the filter shell, a connecting horizontal pipe is fixed to one side of the filter shell, a connecting shell is fixed to one side of the connecting horizontal pipe, a unidirectional multi-port pipe is fixed to the surface of the connecting shell, the first connecting pipe is fixed to one side of the connecting shell, and the second dust collection pipe is fixed to the surface of the filter shell.

[0017] The beneficial effects of this invention are as follows: By integrating the existing negative pressure adsorption limiting device and multi-functional cleaning module of the coating machine into a collaborative design, it effectively solves the obvious defects of relying on independent negative pressure devices, such as high cost, cumbersome maintenance, limited cleaning effect, and idle negative pressure resources. It not only eliminates the separate design of additional vacuum pumps or fans, but also optimizes the airflow guiding structure to enhance the cleaning ability of dust adhering to the material surface, avoids residual impurities from affecting the uniformity of the coating, and simultaneously converts idle negative pressure resources into cleaning power through the reuse of air pressure pipelines, eliminating energy waste and achieving collaborative operation of cleaning and positioning, providing key technical support for the high efficiency and energy-saving upgrade of the coating machine process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural diagram of a negative pressure cleaning device based on a coating machine.

[0020] Figure 2 This is a front view of the negative pressure cleaning device based on the coating machine.

[0021] Figure 3 This is a cross-sectional view based on the negative pressure cleaning device of the coating machine.

[0022] Figure 4 This is an isometric view of the limit cleaning assembly based on the negative pressure cleaning device of the coating machine.

[0023] Figure 5 This is an isometric view of the self-locking component and the pneumatic drive component of the negative pressure cleaning device for the coating machine.

[0024] Figure 6 This is a structural diagram of the air-driven component and the self-cleaning component based on the negative pressure cleaning device of the coating machine.

[0025] Figure 7 This is an isometric view of the limiting component based on the negative pressure cleaning device of the coating machine.

[0026] Figure 8 This is a bottom view of the limiting component based on the negative pressure cleaning device of the coating machine.

[0027] Figure 9 For coating machine negative pressure cleaning device Figure 8 A magnified view of A in the middle.

[0028] Figure 10This is a cross-sectional view of the pneumatic drive component based on the negative pressure cleaning device of the coating machine.

[0029] Figure 11 This is a bottom view of the dustproof component based on the negative pressure cleaning device of the coating machine.

[0030] Figure 12 For coating machine negative pressure cleaning device Figure 11 A magnified view of B in the middle.

[0031] Figure 13 This is a side sectional view of the structure based on the negative pressure cleaning device of the coating machine.

[0032] In the diagram: 1. Coating assembly; 11. Coating machine base; 12. Coating machine cover frame; 13. Coated part; 2. Limiting and cleaning assembly; 21. Limiting component; 211. Limiting base; 212. Negative pressure adsorption plate; 213. Fixing seat; 214. Insert spline; 22. Self-cleaning component; 221. First air chamber; 222. One-way pressure valve; 223. First connecting pipe; 224. One-way backflush nozzle; 225. Sealing airbag; 226. Second connecting pipe; 227. Fixed frame; 228. Elastic airbag; 229. Extrusion plate; 2210. First piston rod; 23. Air drive component; 231. High-pressure vortex air pump; 232. Second connecting pipe; 233. Rotating handle; 234. Third exhaust pipe; 235. Second exhaust pipe; 236. Single-hole rotating pipe; 237. First connecting pipe; 238. Fixed vertical plate; 239. First exhaust pipe; 2310. Fixed sleeve; 24. Dust collection component; 241. Limiting 242. First dust collection pipe; 243. Sealing ring; 244. Dust collection top shell; 245. Second dust collection pipe; 25. Self-locking component; 251. Fixing block; 252. Return spring; 253. First pressing rod; 254. Second pressing block; 255. First transmission plate; 256. Connecting spring; 257. Sliding vertical rod; 258. Second transmission plate; 259. Connecting plug-in plate; 2510. Plug-in block; 2511. Movable plate; 26. Dustproof components; 261. Dustproof baffle; 262. Damping spline seat; 27. Pneumatic drive components; 271. Connecting hose; 272. T-pipe; 273. Second piston rod; 274. Second air chamber; 275. Third piston rod; 276. Rubber spring post; 28. Filter components; 281. Filter housing; 282. Positioning block; 283. Dust collection bottom shell; 284. Filter cotton; 285. One-way multi-port pipe; 286. Connecting horizontal pipe; 287. Connecting shell. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0036] Example 1, referring to Figure 1 and Figure 2 This is the first embodiment of the present invention. This embodiment provides a coating machine negative pressure cleaning device, which includes a coating component 1 and a limiting cleaning component 2.

[0037] By combining the coating component 1 and the limiting cleaning component 2, the obvious drawbacks of relying on independent negative pressure devices, such as high cost, cumbersome maintenance, limited cleaning effect, and idle negative pressure resources, are effectively solved. This not only eliminates the separate design of additional vacuum pumps or fans, but also optimizes the airflow guidance structure to enhance the cleaning ability of dust adhering to the material surface, avoids residual impurities from affecting the uniformity of the coating, and simultaneously converts idle negative pressure resources into cleaning power through the reuse of air pressure pipelines, eliminating energy waste and achieving coordinated operation of cleaning and positioning. This provides key technical support for the high-efficiency and energy-saving upgrade of coating machine technology.

[0038] Specifically, the coating assembly 1 includes a coating machine base 11, a coating machine cover frame 12 is fixed to the top of the coating machine base 11, a coating component 13 is provided in the inner cavity of the coating machine cover frame 12, and the coating component 13 is fixed to the top of the coating machine base 11.

[0039] The coating machine base 11 is the core load-bearing structure of the entire coating device, providing a stable installation reference for the coating machine cover frame 12, the coated parts 13, and the subsequent limiting and cleaning components 2, thus preventing the equipment from shaking during the coating process and causing a decrease in coating accuracy. The coating machine cover frame 12 is a frame-like structure covering the top of the coating machine base 11, which protects the internal coated parts 13 and the limiting and cleaning components 2 from external collisions and dust interference, and reduces the overflow of coating waste. The coated parts 13, as the core execution component of the coating operation, are fixed to the top of the coating machine base 11 to ensure that its coating path is accurate and to provide a uniform coating for the workpiece.

[0040] Specifically, the limiting cleaning component 2 is set in the inner cavity of the coating machine cover frame 12, including a limiting component 21 fixed to one side of the coating part 13, a dustproof component 26 placed on the top of the limiting component 21, a pneumatic drive component 23 set on one side of the limiting component 21, a dust collection component 24 set on the top of the limiting component 21, a self-locking component 25 fixed on the surface of the dust collection component 24, a pneumatic drive component 27 fixed on the bottom of the self-locking component 25, a self-cleaning component 22 fixed on one side of the pneumatic drive component 23, and a filter component 28 set on the bottom of the limiting component 21.

[0041] Example 2, refer to Figures 2 to 7 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0042] Specifically, the limiting component 21 includes a limiting base 211 fixed to the surface of the coated component 13, a negative pressure adsorption plate 212 placed on the top of the limiting base 211, a fixing seat 213 fixed on one side of the limiting base 211, and a spline 214 fixed on the top of the fixing seat 213.

[0043] The limiting base 211 provides the core installation benchmark for the limiting cleaning component 2, ensuring accurate positioning of each component; the negative pressure adsorption plate 212 adsorbs the workpiece to be coated by negative pressure, avoiding workpiece displacement during coating and resulting in uneven coating; the fixing base 213 provides a connection fulcrum for the dustproof component 26, and the plug spline 214 cooperates with the damping spline seat 262 to realize the angle adjustment and stable positioning of the dustproof baffle 261, flexibly adapting to the protection needs of workpieces of different sizes.

[0044] Specifically, the self-cleaning component 22 includes a fixing frame 227 fixed to the bottom of the limiting base 211. An elastic airbag 228 is movably connected to one side of the fixing frame 227. A second connecting pipe 226 is fixed to one side of the elastic airbag 228. A sealing airbag 225 is fixed to one side of the second connecting pipe 226. A compression plate 229 is movably connected to one side of the elastic airbag 228. A first piston rod 2210 is fixed to one side of the compression plate 229. A first air chamber 221 is sleeved on the surface of the first piston rod 2210. A one-way pressure valve 222 is fixed to the top of the first air chamber 221. A first connecting pipe 223 is fixed to the top of the one-way pressure valve 222.

[0045] The fixed frame 227 limits the deformation range of the elastic airbag 228 to prevent damage from excessive compression. When the first piston rod 2210 slides in the first air chamber 221, it pushes the compression plate 229 to compress the elastic airbag 228. Part of the gas expands the sealing airbag 225 through the second connecting pipe 226 to achieve the sealing between the limiting base 211 and the external structure. Another part of the gas is transported to the one-way backflush nozzle 224 through the first connecting pipe 223 to spray out high-pressure airflow in a direction, achieving automatic cleaning and reducing manual maintenance costs.

[0046] Specifically, the pneumatic drive component 23 includes a high-pressure vortex air pump 231 fixed to the bottom of the limiting base 211. A first connecting pipe 237 is fixed to one side of the high-pressure vortex air pump 231, and a second connecting pipe 232 is fixed to the other side of the high-pressure vortex air pump 231. A single-hole rotating pipe 236 is movably connected to one side of the second connecting pipe 232. A fixed vertical plate 238 is fixed to the bottom of the limiting base 211. The single-hole rotating pipe 236 is movably connected to one side of the fixed vertical plate 238. A fixed sleeve 2310 is fitted on the surface of the single-hole rotating pipe 236. The fixed sleeve 2310 is fixed to the bottom of the high-pressure vortex air pump 231. A third exhaust pipe 234, a second exhaust pipe 235, and a first exhaust pipe 239 are respectively fixed on the surface of the fixed sleeve 2310. A rotating handle 233 is fitted on the surface of the single-hole rotating pipe 236.

[0047] The high-pressure vortex air pump 231 provides a high-pressure air source for the entire system. The first connecting pipe 237 can directly supply air to the external coating auxiliary components. Rotating the handle 233 drives the single-hole rotating pipe 236 to rotate within the fixed sleeve 2310. The air source is split by connecting the single hole to the third exhaust pipe 234, the second exhaust pipe 235, and the first exhaust pipe 239 respectively. For example, connecting to the first exhaust pipe 239 can supply air to the self-cleaning component 22, and connecting to the third exhaust pipe 234 can supply air to the air-driven transmission component 27. The fixed vertical plate 238 ensures the stable rotation of the single-hole rotating pipe 236 and avoids air leakage from affecting the air pressure.

[0048] Specifically, the dust collection component 24 includes a dust collection top shell 244 disposed on the top of the limiting base 211. A first dust collection pipe 242 is fixed on the top of the dust collection top shell 244. A limiting sleeve 241 is sleeved on the surface of the first dust collection pipe 242. A sealing gas ring 243 is fixed on the inner wall of the limiting sleeve 241. A second dust collection pipe 245 is disposed at the bottom of the first dust collection pipe 242.

[0049] The dust collection top shell 244 covers the negative pressure adsorption plate 212 and collects the waste blown off by the self-cleaning component 22; the first dust collection pipe 242 and the second dust collection pipe 245 cooperate to form a waste conveying channel, and the limiting sleeve 241 limits the first dust collection pipe 242 to prevent shaking and waste leakage; the sealing air ring 243 fills the gap between the limiting sleeve 241 and the first dust collection pipe 242 to further improve the sealing performance and ensure efficient waste collection.

[0050] Specifically, the self-locking component 25 includes a fixing block 251 fixed to one side of the limiting base 211. The inner wall of the fixing block 251 is slidably connected to a second pressing block 254 that cooperates with the limiting base 211. A return spring 252 is sleeved on the surface of the second pressing block 254. A first transmission plate 255 is provided at the bottom of the fixing block 251. A sliding vertical rod 257 is fixed at the top of the first transmission plate 255. A second transmission plate 258 is sleeved on the surface of the sliding vertical rod 257. A connecting spring 256 is sleeved on the sliding vertical rod 257. A movable plate 2511 is fixed at the top of the sliding vertical rod 257. A plug-in block 2510 is fixed at the bottom of the movable plate 2511. A connecting plug-in plate 259 that cooperates with the plug-in block 2510 is sleeved on the surface of the limiting sleeve 241. A first pressing rod 253 that cooperates with the second pressing block 254 is fixed at the top of the first transmission plate 255.

[0051] When the dust collection component 24 is installed, the limiting sleeve 241 presses the second pressing block 254, causing it to slide along the fixed block 251 and compress the return spring 252. The second pressing block 254 pushes the first pressing rod 253 to drive the first transmission plate 255 to move down. The sliding vertical rod 257 moves down synchronously and compresses the connecting spring 256. The movable plate 2511 drives the plug-in block 2510 to insert into the connecting plug-in plate 259, thereby realizing the self-locking of the dust collection component 24.

[0052] Specifically, the dustproof component 26 includes a dustproof baffle 261 movably connected to the top of the limiting base 211, and a damping spline seat 262 that cooperates with the fixed seat 213 is fixed on one side of the dustproof baffle 261.

[0053] The dust baffle 261 covers the coating area on the top of the limiting base 211 to prevent external dust from falling into the area to be coated and to ensure coating quality. The damping spline seat 262 and the fixed seat 213 are connected by spline 214 to achieve precise positioning. The damping characteristics ensure that the dust baffle 261 can stay stably at any angle, adapting to the dust protection requirements of workpieces of different sizes.

[0054] Specifically, the pneumatic drive component 27 includes a second air chamber 274 fixed to the bottom of the coating machine base 11. A third piston rod 275 is movably connected to one side of the inner wall of the second air chamber 274. The third piston rod 275 is fixed to the bottom of the first transmission plate 255. A second piston rod 273 is movably connected to the other side of the inner wall of the second air chamber 274. A rubber spring post 276 is sleeved on the surface of the second piston rod 273. A three-way pipe 272 is fixed to the bottom of the second air chamber 274. A connecting hose 271 is fixed to the bottom of the three-way pipe 272. The connecting hose 271 is fixed to the surface of the third exhaust pipe 234.

[0055] The high-pressure gas from the pneumatic drive component 23 enters the second air chamber 274 through the third exhaust pipe 234, connecting hose 271, and three-way pipe 272, pushing the second piston rod 273 to compress the rubber spring column 276, and simultaneously pushing the third piston rod 275 upward, driving the first transmission plate 255 to move, thus realizing the pneumatic drive of the self-locking component 25; after the air pressure disappears, the rubber spring column 276 pushes the second piston rod 273 to reset, causing the third piston rod 275 to drive the first transmission plate 255 back to the initial position, completing the unlocking and reset without manual operation.

[0056] Specifically, the filter element 28 includes a filter shell 281 fixed to the bottom of the limiting base 211, a positioning block 282 fixed to the inner wall of the filter shell 281, a filter cotton 284 movably connected to one side of the positioning block 282, and a dust collection bottom shell 283 embedded at the bottom of the filter shell 281.

[0057] The filter housing 281 receives the waste material conveyed by the dust collection component 24. The positioning block 282 fixes the position of the filter cotton 284. The filter cotton 284 filters the waste material, separating fine dust from larger particles, which facilitates subsequent classification and processing. The dust collection bottom shell 283 collects the filtered waste material. Its embedded design allows it to be disassembled and cleaned separately, avoiding the cumbersome disassembly of the entire filter housing 281 and improving maintenance efficiency.

[0058] Example 3, referring to Figures 7 to 13 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0059] Specifically, a one-way backflush nozzle 224 is movably connected to the inner wall of the filter housing 281. A connecting horizontal pipe 286 is fixed to one side of the filter housing 281, and a connecting shell 287 is fixed to one side of the connecting horizontal pipe 286. A one-way multi-pass pipe 285 is fixed to the surface of the connecting shell 287. A first connecting pipe 237 is fixed to one side of the connecting shell 287, and a second dust collection pipe 245 is fixed to the surface of the filter housing 281.

[0060] When in use, if normal negative pressure cleaning is required, first manually rotate the handle 233 to drive the single-hole rotating tube 236 to connect with the second exhaust pipe 235. Then start the high-pressure vortex air pump 231. The negative pressure generated by the air pump is sent into the connecting shell 287 through the first connecting pipe 237, and then transmitted to the negative pressure adsorption plate 212 through the one-way multi-pass pipe 285 and the connecting horizontal pipe 286 to adsorb the material on the plate. At the same time, the negative pressure reaches the dust collection top shell 244 through the second dust collection pipe 245 and the first dust collection pipe 242 to suck up and clean the surface of the material. The dust enters the filter shell 281 with the airflow and is intercepted by the filter cotton 284 and falls into the dust collection bottom shell 283. The filtered gas is discharged from the second exhaust pipe 235 through the second connecting pipe 232 and the single-hole rotating tube 236.

[0061] To switch to coating processing, rotate the handle 233 to connect the single-hole rotating pipe 236 with the third exhaust pipe 234. The gas generated by the high-pressure vortex air pump 231 is sent to the three-way pipe 272 through the second connecting pipe 232, the third exhaust pipe 234, and the connecting hose 271, and then enters the second air chamber 274 to push the third piston rod 275 upward, which drives the first transmission plate 255 to rise. The first extrusion rod 253 disengages from the second extrusion block 254, and the second extrusion block 254 resets and is no longer inserted with the dust baffle 261. At the same time, the sliding vertical rod 257 drives the movable plate 2511 upward, and the insertion block 2510 disengages from the connecting insertion plate 259. At this time, the dust collection top shell 244 and the dust baffle 261 can be removed, and the coating part 13 can be started for coating processing.

[0062] When it is necessary to clean the filter cotton 284 and tighten the dust collection bottom shell 283, rotate the handle 233 to connect the single-hole rotating tube 236 with the first exhaust pipe 239. The air pump gas enters the first air chamber 221 through the first exhaust pipe 239, pushing the first piston rod 2210 to drive the extrusion plate 229 to squeeze the elastic air bag 228. The gas in the air bag is sent into the sealing air bag 225 through the second connecting pipe 226. The sealing air bag 225 expands and sticks tightly to the dust collection bottom shell 283 to achieve a tight seal. When the pressure inside the first air chamber 221 reaches the threshold, the excess gas is sent into the one-way backflush nozzle 224 through the first connecting pipe 223 to spray high-pressure airflow onto the filter cotton 284 for a brief backflush cleaning to ensure the filtration effect.

[0063] If the dust collection component 24 needs to be reinstalled, first pull the connecting plug plate 259 to raise its height, then align the first dust collection tube 242 at the bottom of the dust collection top shell 244 with the second dust collection tube 245 and insert it. Then slide the limiting sleeve 241 downwards. The sealing gas ring 243 on the inner wall of the limiting sleeve 241 fits against the surface of the first dust collection tube 242. The connecting plug plate 259 then moves down to below the plug block 2510. Then release the pull on the connecting plug plate 259. The plug block 2510 resets and inserts into the connecting plug plate 259 under the action of the connecting spring 256, thus completing the installation of the dust collection component 24.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A negative pressure cleaning device based on a coating machine, characterized in that: include, The coating assembly (1) includes a coating machine base (11), a coating machine cover frame (12) fixed to the top of the coating machine base (11), a coating component (13) provided in the inner cavity of the coating machine cover frame (12), the coating component (13) being fixed to the top of the coating machine base (11), and; The limiting cleaning assembly (2) is located in the inner cavity of the coating machine cover frame (12), including a limiting member (21) fixed to one side of the coating part (13). A dustproof part (26) is placed on the top of the limiting member (21), a pneumatic drive part (23) is provided on one side of the limiting member (21), a dust collection part (24) is provided on the top of the limiting member (21), a self-locking part (25) is fixed on the surface of the dust collection part (24), a pneumatic drive transmission part (27) is fixed on the bottom of the self-locking part (25), a self-cleaning part (22) is fixed on one side of the pneumatic drive part (23), and a filter part (28) is provided on the bottom of the limiting member (21).

2. The negative pressure cleaning device based on a coating machine as described in claim 1, characterized in that: The limiting member (21) includes a limiting base (211) fixed to the surface of the coating (13), a negative pressure adsorption plate (212) is placed on the top of the limiting base (211), a fixing seat (213) is fixed on one side of the limiting base (211), and a spline (214) is fixed on the top of the fixing seat (213).

3. The negative pressure cleaning device based on a coating machine as described in claim 1 or 2, characterized in that: The self-cleaning component (22) includes a fixed frame (227) fixed to the bottom of the limiting base (211). An elastic airbag (228) is movably connected to one side of the fixed frame (227). A second connecting pipe (226) is fixed to one side of the elastic airbag (228). A sealing airbag (225) is fixed to one side of the second connecting pipe (226). A squeezing plate (229) is movably connected to one side of the elastic airbag (228). A first piston rod (2210) is fixed to one side of the squeezing plate (229). A first air chamber (221) is sleeved on the surface of the first piston rod (2210). A one-way pressure valve (222) is fixed to the top of the first air chamber (221). A first connecting pipe (223) is fixed to the top of the one-way pressure valve (222). A one-way backflush nozzle (224) is fixed to one side of the first connecting pipe (223).

4. The negative pressure cleaning device based on a coating machine as described in claim 3, characterized in that: The pneumatic drive component (23) includes a high-pressure vortex air pump (231) fixed to the bottom of the limiting base (211). A first connecting pipe (237) is fixed to one side of the high-pressure vortex air pump (231), and a second connecting pipe (232) is fixed to the other side of the high-pressure vortex air pump (231). A single-hole rotating pipe (236) is movably connected to one side of the second connecting pipe (232). A fixed vertical plate (238) is fixed to the bottom of the limiting base (211). The moving tube (236) is movably connected to one side of the fixed vertical plate (238). The surface of the single-hole rotating tube (236) is fitted with a fixed sleeve (2310). The fixed sleeve (2310) is fixed to the bottom of the high-pressure vortex air pump (231). The surface of the fixed sleeve (2310) is respectively fixed with a third exhaust pipe (234), a second exhaust pipe (235) and a first exhaust pipe (239). The surface of the single-hole rotating tube (236) is fitted with a rotating handle (233).

5. The negative pressure cleaning device based on a coating machine as described in any one of claims 4, characterized in that: The dust collection component (24) includes a dust collection top shell (244) disposed on the top of the limiting base (211). A first dust collection pipe (242) is fixed on the top of the dust collection top shell (244). A limiting sleeve (241) is sleeved on the surface of the first dust collection pipe (242). A sealing gas ring (243) is fixed on the inner wall of the limiting sleeve (241). A second dust collection pipe (245) is disposed at the bottom of the first dust collection pipe (242).

6. The negative pressure cleaning device based on a coating machine as described in claim 5, characterized in that: The self-locking component (25) includes a fixing block (251) fixed to one side of the limiting base (211). The inner wall of the fixing block (251) is slidably connected to a second pressing block (254) that cooperates with the limiting base (211). A return spring (252) is sleeved on the surface of the second pressing block (254). A first transmission plate (255) is provided at the bottom of the fixing block (251). A sliding vertical rod (257) is fixed at the top of the first transmission plate (255). The surface of the sliding vertical rod (257) is sleeved with a return spring (252). A second transmission plate (258) is provided, a connecting spring (256) is sleeved on the sliding vertical rod (257), a movable plate (2511) is fixed at the top of the sliding vertical rod (257), a plug-in block (2510) is fixed at the bottom of the movable plate (2511), a connecting plug-in plate (259) that cooperates with the plug-in block (2510) is sleeved on the surface of the limiting sleeve (241), and a first extrusion rod (253) that cooperates with the second extrusion block (254) is fixed at the top of the first transmission plate (255).

7. The negative pressure cleaning device based on a coating machine as described in claim 6, characterized in that: The dustproof component (26) includes a dustproof baffle (261) movably connected to the top of the limiting base (211), and a damping spline seat (262) that cooperates with the fixed seat (213) is fixed on one side of the dustproof baffle (261).

8. The negative pressure cleaning device based on a coating machine as described in claim 7, characterized in that: The pneumatic drive component (27) includes a second air chamber (274) fixed to the bottom of the coating machine base (11). A third piston rod (275) is movably connected to one side of the inner wall of the second air chamber (274). The third piston rod (275) is fixed to the bottom of the first transmission plate (255). A second piston rod (273) is movably connected to the other side of the inner wall of the second air chamber (274). A rubber spring column (276) is sleeved on the surface of the second piston rod (273). A three-way pipe (272) is fixed to the bottom of the second air chamber (274). A connecting hose (271) is fixed to the bottom of the three-way pipe (272). The connecting hose (271) is fixed to the surface of the third exhaust pipe (234).

9. The negative pressure cleaning device based on a coating machine as described in claim 8, characterized in that: The filter element (28) includes a filter shell (281) fixed to the bottom of the limiting base (211), a positioning block (282) fixed to the inner wall of the filter shell (281), a filter cotton (284) movably connected to one side of the positioning block (282), and a dust collection bottom shell (283) embedded at the bottom of the filter shell (281).

10. The negative pressure cleaning device based on a coating machine as described in claim 9, characterized in that: The one-way backflush nozzle (224) is movably connected to the inner wall of the filter shell (281). A connecting horizontal pipe (286) is fixed on one side of the filter shell (281), and a connecting shell (287) is fixed on one side of the connecting horizontal pipe (286). A one-way multi-pass pipe (285) is fixed on the surface of the connecting shell (287). The first connecting pipe (237) is fixed on one side of the connecting shell (287), and the second dust collection pipe (245) is fixed on the surface of the filter shell (281).

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