Polyurethane coating post-residue cleaning device
By designing a residue cleaning device after polyurethane coating, the problem of difficult-to-handle polyurethane residue is solved by using scraper scraping and nozzle spraying of cleaning liquid, achieving rapid cleaning and improved efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIFANG WARMPIPES ANTI CORROSIVE & HEAT INSULATEDCO
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-05
Smart Images

Figure CN224321918U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polyurethane coating technology, and in particular to a device for cleaning residues after polyurethane coating. Background Technology
[0002] Polyurethane is a high-performance polymer material widely used in pipeline coating. Polyurethane pipeline coatings are composed of various components, including polyurethane prepolymer, curing agent, pigments, fillers, and additives. Polyurethane coatings can effectively isolate pipelines from external corrosive media, such as acids, alkalis, salts, and moisture in the soil, as well as corrosive gases in the transported medium, thereby significantly improving the corrosion resistance of pipelines and extending their service life. They are widely used for coating building water supply and drainage pipelines, fire protection pipelines, air conditioning condensate pipelines, etc., playing a role in corrosion prevention, waterproofing, and heat insulation, ensuring the normal operation of various pipeline systems in buildings.
[0003] Currently, when applying polyurethane coating to pipes, some polyurethane often drips down, contaminating the base below the pipe. As the accumulation time increases, the polyurethane residue hardens and becomes difficult to remove. If cleaning is performed after each coating, it will increase the workload and reduce coating efficiency.
[0004] How to quickly clean polyurethane residue without affecting the polyurethane coating, thereby saving labor and improving coating efficiency, has become a technical problem that needs to be solved.
[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content
[0006] To address the aforementioned shortcomings, the purpose of this invention is to provide a polyurethane coating residue cleaning device that can quickly clean polyurethane residue without affecting the polyurethane coating, saving labor and improving coating efficiency.
[0007] To achieve the above objectives, this utility model provides a polyurethane coating residue cleaning device, including a base, on which movable uprights are symmetrically arranged, and each upright is provided with a limiting groove, and a lifting plate that can be raised and lowered is slidably arranged in each limiting groove.
[0008] The lifting plate is provided with an installation plate, and a scraper is elastically connected inside the installation plate. One end of the scraper passes through the installation plate and abuts against the base. A fixing box is provided at the end of the installation plate away from the scraper. The fixing box is provided with several nozzles for spraying cleaning liquid. A liquid storage box for storing cleaning liquid is provided at the end of the fixing box away from the scraper.
[0009] According to the polyurethane coating residue cleaning device of this utility model, the base is provided with a clearance groove, a rotatable drive rod is rotatably connected in the clearance groove, a movable frame is threadedly connected to the drive rod, and the upright plates are all connected to the movable frame.
[0010] According to the polyurethane coating residue cleaning device of this utility model, sliders are symmetrically provided on the lifting plate, and sliding grooves are symmetrically provided in the limiting grooves, with the sliders slidably disposed in the sliding grooves.
[0011] According to the polyurethane coating residue cleaning device of this utility model, the scraper inside the mounting plate is symmetrically provided with inserts, the mounting plate is provided with slots that cooperate with the inserts, the inserts are all slidably disposed in the slots, and elastic elements are provided between the mounting plate and the scraper.
[0012] According to the polyurethane coating residue cleaning device of this utility model, the fixed box is equipped with a booster pump, and the booster pump is connected to the nozzle and the liquid storage box through a connecting pipe.
[0013] According to the polyurethane coating residue cleaning device of this utility model, the mounting plate and the lifting plate are connected by several locking components.
[0014] According to the polyurethane coating residue cleaning device of this utility model, the liquid storage box is provided with a feeding port, and a dust cover is threadedly connected to the feeding port.
[0015] The purpose of this invention is to provide a device for cleaning polyurethane coating residue, including a scraper, a scraper blade, and a nozzle, which work together to quickly clean polyurethane residue without affecting the polyurethane coating. If the polyurethane on the base has already cured, the scraper can be used to scrape the cured polyurethane on the base first, and then a cleaning liquid can be sprayed onto the scraped polyurethane using a booster pump and nozzle. This facilitates the reaction between the polyurethane and the cleaning liquid, saves labor, and improves coating efficiency. The elastically connected scraper can better adapt to the unevenness of the polyurethane surface and prevent scraper damage. In summary, the beneficial effects of this invention are: it can quickly clean polyurethane residue without affecting the polyurethane coating, saving labor and improving coating efficiency. Attached Figure Description
[0016] Figure 1 This is a structural diagram of the present invention;
[0017] Figure 2 This is a structural diagram of the nozzle.
[0018] Figure 3 This is a cross-sectional view of the scraper area;
[0019] In the diagram: 1-base, 11-avoidance groove, 12-drive rod, 121-drive component, 2-moving frame, 21-upright plate, 211-limiting groove, 22-telescopic component, 23-lifting plate, 3-mounting plate, 31-locking component, 32-scraper, 33-elastic component, 4-fixed box, 41-nozzle, 42-liquid storage box, 421-dust cover. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.
[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0023] See Figures 1-3This utility model provides a polyurethane coating residue cleaning device, including a base 1. In use, a clamping assembly for fixing the pipe is placed on the base 1, and the base 1 receives the remaining polyurethane. A clearance groove 11 is provided at the end of the base 1 away from the pipe. A rotatable drive rod 12 is rotatably connected within the clearance groove 11. A drive component 121 is provided on the base 1. The output shaft of the drive component 121 passes through the base 1 and connects to the drive rod 12. The drive component 121 can drive the drive rod 12 to rotate. A threaded connection is provided on the drive rod 12. The mobile frame 2 includes upright plates 21 symmetrically arranged on both sides of the base 1. Each upright plate 21 is provided with a limiting groove 211. Each limiting groove 211 is slidably provided with a lifting plate 23 (each lifting plate 23 is symmetrically provided with a slider, and each limiting groove 211 is symmetrically provided with a sliding groove, and the slider is slidably provided in the sliding groove to prevent the lifting plate 23 from detaching from the upright plate 21). When the driving member 121 drives the driving rod 12 to rotate, the mobile frame 2 can slide horizontally on the base 1 under the restriction of the upright plate 21 and other structures.
[0024] See Figures 1-3 Two lifting plates 23 are equipped with mounting plates 3. Scrapers 32 are elastically connected inside the mounting plates 3 (the scrapers 32 inside the mounting plates 3 are symmetrically equipped with inserts, and the mounting plates 3 are equipped with slots that cooperate with the inserts. The inserts are all slidably set in the slots, and elastic elements 33 are provided between the mounting plates 3 and the scrapers 32). One end of the scraper 32 passes through the mounting plates 3 and abuts against the base 1. A fixing box 4 is provided at the end of the mounting plates 3 away from the scrapers 32. Several nozzles 41 are provided on the fixing box 4. A liquid storage box 42 for storing cleaning liquid (since polyurethane is an organic material, an organic solvent can be used as the cleaning liquid to dissolve polyurethane residue) is provided at the end of the fixing box 4 away from the scrapers 32. A booster pump is provided inside the fixing box 4, and the booster pump is connected to the nozzles 41 and the liquid storage box 42 through a connecting pipe. The booster pump can draw out the liquid in the liquid storage box 42 and then spray it out through several nozzles 41 (using a booster pump and several nozzles 41 to spray liquid is a conventional technical means for those skilled in the art, and will not be described in detail here).
[0025] See Figures 1-3 Preferably, the elastic element 33 is a spring, which provides return power.
[0026] See Figures 1-3 Specifically, the mounting plate 3 and the lifting plate 23 are connected by several locking pieces 31, which facilitates the connection and separation of the mounting plate 3 and the lifting plate 23.
[0027] See Figures 1-3 Preferably, the liquid storage box 42 is provided with a feeding port, and a dust cover 421 is threaded onto the feeding port, so that the operator can add cleaning liquid to the liquid storage box 42 through the feeding port.
[0028] See Figures 1-3Preferably, the locking element 31 is a bolt, which facilitates connection by the operator and saves connection time.
[0029] See Figures 1-3 Specifically, each upright plate 21 is equipped with a telescopic component 22, and the output end of the telescopic component 22 is inserted into the limiting groove 211 and connected to the lifting plate 23. The telescopic component 22 can drive the lifting plate 23 to rise and fall.
[0030] See Figures 1-3 Preferably, the drive component 121 is a rotary motor and the telescopic component 22 is an electric cylinder, which provides power.
[0031] See Figures 1-3 In use, first remove the mounting plate 3 from the lifting plate 23 (along with the fixing box 4, liquid storage box 42, and other structures on the mounting plate 3), then turn on the drive unit 121. The drive unit 121 drives the drive rod 12 to rotate. When the upright plate 21 moves between the two clamping components of the fixed pipe (or moves to the base 1 that needs to be cleaned), install the mounting plate 3 on the lifting plate 23. If the polyurethane on the base 1 has already cured, first use the scraper 32 to scrape the cured polyurethane on the base 1 (the elastically connected scraper 32 can better adapt to the undulations of the polyurethane surface and prevent the scraper 32 from being damaged). Then, use the booster pump and nozzle 41 to spray the scraped polyurethane onto the base 1. When spraying cleaning liquid onto polyurethane, if the sprayed cleaning liquid is toxic, the operator can stay away from the spraying site and remotely control the booster pump, telescopic component 22, and drive component 121 using a controller (remotely controlling multiple electrical devices simultaneously using a controller is a mature existing technology in this field and will not be described in detail here) to avoid inhaling toxic gases. After the polyurethane softens, use a scraper 32 to push the polyurethane to one place, and then collect it manually. After use, the mounting plate 3 needs to be removed, and the upright plate 21 needs to be moved back to its initial position to avoid affecting the next coating. If the upright plate 21, mounting plate 3, and other structures do not become contaminated with polyurethane during coating, the upright plate 21 and other structures do not need to be moved back.
[0032] This invention provides a device for cleaning polyurethane coating residue, including a scraper, a scraper blade, and a nozzle, which work together to quickly clean polyurethane residue without affecting the polyurethane coating. If the polyurethane on the base has already cured, the scraper can be used to scrape away the cured polyurethane on the base first. Then, a booster pump and nozzle are used to spray cleaning liquid onto the scraped polyurethane on the base, facilitating the reaction between the polyurethane and the cleaning liquid, saving labor and improving coating efficiency. The elastically connected scraper can better adapt to the unevenness of the polyurethane surface and prevent scraper damage. In summary, the beneficial effects of this invention are: it can quickly clean polyurethane residue without affecting the polyurethane coating, saving labor and improving coating efficiency.
[0033] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.
Claims
1. A device for cleaning residue after polyurethane coating, characterized in that, Includes a base, on which movable uprights are symmetrically arranged, and each upright is provided with a limiting groove, and a lifting plate that can be raised and lowered is slidably arranged in each limiting groove; The lifting plate is provided with an installation plate, and a scraper is elastically connected inside the installation plate. One end of the scraper passes through the installation plate and abuts against the base. A fixing box is provided at the end of the installation plate away from the scraper. The fixing box is provided with several nozzles for spraying cleaning liquid. A liquid storage box for storing cleaning liquid is provided at the end of the fixing box away from the scraper.
2. The polyurethane coating residue cleaning device according to claim 1, characterized in that, The base is provided with a clearance groove, and a rotatable drive rod is rotatably connected in the clearance groove. A movable frame is threadedly connected to the drive rod, and the upright plates are all connected to the movable frame.
3. The polyurethane coating residue cleaning device according to claim 1, characterized in that, Each of the lifting plates is symmetrically provided with sliders, and each of the limiting grooves is symmetrically provided with sliding grooves, with the sliders slidably disposed within the sliding grooves.
4. The polyurethane coating residue cleaning device according to claim 1, characterized in that, The scraper inside the mounting plate is symmetrically provided with inserts, and the mounting plate is provided with slots that cooperate with the inserts. The inserts are all slidably disposed in the slots, and elastic elements are provided between the mounting plate and the scraper.
5. The polyurethane coating residue cleaning device according to claim 1, characterized in that, The fixed box is equipped with a booster pump, and the booster pump is connected to the nozzle and the liquid storage box through a connecting pipe.
6. The polyurethane coating residue cleaning device according to claim 1, characterized in that, The mounting plate and the lifting plate are connected by several locking components.
7. The polyurethane coating residue cleaning device according to claim 1, characterized in that, The liquid storage box is provided with a feeding port, and a dust cover is threaded onto the feeding port.