A fire-retardant coating outbound cleaning device

CN122561380APending Publication Date: 2026-08-14HEBEI SHENGYI NEW BUILDING MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-10
Publication Date
2026-08-14

AI Technical Summary

Technical Problem

[0003]目前,在防火涂料生产过程中,对于粉末状的涂料,由于其通常适用在大批量采购中,对此通常装入袋装存放,方便运输,并降低成本,但是在灌料封装后,缝线处的袋口部分往往残留部分粉末材料,并且包装袋外部也会因为灌料时的飘散出现残留,需要单独进行清理,而现有生产中,通常由人工进行,利用喷枪对包装袋上方区域、以及分开缝线处进行处理,但是长时间的工作,造成粉末大量飘散在周围环境中,危害工人身体健康,并且清理效率相对较低,影响生产安全

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Abstract

This invention relates to the field of fire-retardant coating cleaning equipment, and more particularly to a fire-retardant coating outbound cleaning device. It includes: a suspension frame and cleaning components; the suspension frame has first thrust members on both sides; the cleaning components are arranged in pairs, each including a hanging frame, a track frame, and a suction component; the hanging frame is slidably connected to the suspension frame above and connected to the first thrust members; the track frame is horizontally arranged below the hanging frame and can move up and down along the hanging frame; fine-tuning components are symmetrically arranged on the track frame. This invention, through the suction component, can complete the external cleaning of the packaging bag during the upward movement after clamping, and by adsorbing the packaging bag and opening the seam, the cleaning is completed using the adsorption space, effectively avoiding dust diffusion, ensuring a clean and tidy production environment, and eliminating the need for manual operation, thus improving work efficiency.
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Description

Technical Field

[0001] This invention relates to the field of fire-retardant coating cleaning equipment, and more particularly to a fire-retardant coating outbound cleaning device. Background Technology

[0002] Fire-retardant coatings, as functional coatings specifically applied to the surface of various substrates, can play a role in fire prevention and heat insulation during a fire, slowing down the burning rate of the substrate, preventing the fire from spreading, and reserving valuable rescue and evacuation time.

[0003] Currently, in the production process of fire-retardant coatings, powdered coatings are usually packaged in bags for convenient transportation and cost reduction due to their suitability for bulk purchases. However, after filling and sealing, some powder material often remains at the bag opening near the seam, and residue also appears on the outside of the packaging bag due to dispersion during filling. This requires separate cleaning. In existing production, this is usually done manually, using a spray gun to treat the area above the packaging bag and the seam. However, prolonged work causes a large amount of powder to disperse into the surrounding environment, endangering the health of workers, and the cleaning efficiency is relatively low, affecting production safety. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a fire-retardant coating outbound cleaning device in response to the above-mentioned technical deficiencies. The device can clean the outside of the packaging bag during the upward movement after clamping by using a suction component. By adsorbing the packaging bag and opening the seam, the device can complete the cleaning by using the suction space, which effectively avoids the phenomenon of dust diffusion, ensures a clean and tidy production environment, and eliminates the need for manual operation, thereby improving work efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is a fire-retardant coating outbound cleaning device, comprising: a suspension frame and cleaning components; the suspension frame is provided with first thrust members on both sides respectively, the cleaning components are arranged in pairs, and the cleaning components include a suspension frame, a track frame and a suction component; the upper part of the suspension frame is slidably connected to the suspension frame and connected to the first thrust members, the track frame is horizontally arranged below the suspension frame and can move up and down along the suspension frame, and the track frame is symmetrically provided with fine-tuning components; the two ends of the suction component are slidably connected to the track frame respectively, and the inner side is elastically supported and connected to the track frame, and the two track frames can form a negative pressure adsorption space directly above when they are docked.

[0006] Preferably, the suspension frame has multiple support rods in the middle, and the upper part of the suspension frame has sliding holes that connect to the support rods.

[0007] Preferably, the suspension frame has a second thrust member above it and a sliding groove below it; the track frame has sliders at the front and rear that are slidably connected to the sliding grooves, and the upper part is connected to the second thrust member.

[0008] Preferably, the upper edge of the track frame is provided with a mounting plate, the outer edge of the mounting plate is provided with a negative pressure cavity, and a plurality of jet heads are provided at equal intervals along the length of the mounting plate, and the jet heads are arranged close to the negative pressure cavity.

[0009] Preferably, the fine-tuning component includes a third thrust component and a hook plate; the third thrust component is fixedly connected to the track frame, and its push rod end is fixedly connected to the hook plate.

[0010] Preferably, the suction component includes a frame and a rotating sleeve; the two ends of the frame are slidably connected to the track frame, and a guide post is provided on the inner side of the frame. One end of the guide post is fixedly connected to the track frame, and the other end passes through the inner side of the frame and is fitted with a return spring. Negative pressure triggers are provided at the front and rear of the frame, respectively. The rotating sleeve is connected to the frame's rotating shaft, and three brushes connected to the negative pressure triggers are provided along the circumference of the rotating sleeve. Adsorption holes are evenly provided in the area between two adjacent brushes. The negative pressure trigger drives the rotating brushes to extend and maintain communication with the adsorption holes entering the corresponding areas.

[0011] Preferably, the left side of the frame is provided with a docking plate that connects to the fine-tuning component.

[0012] Preferably, the negative pressure trigger includes a fourth thrust member, an air intake sleeve, and a sleeve; the fourth thrust member is fixed to the end of the frame, one end of the air intake sleeve is fixedly connected to the fourth thrust member, the other end is fixedly connected to the sleeve and communicates with the sleeve, and a guide surface is provided at the end near the sleeve, and a horizontal notch pointing outward is provided on the sleeve.

[0013] Preferably, the rotating sleeve is provided with three mounting slots; the brush component is slidably connected to the mounting slots, the outer side of the brush component is provided with a compression spring that contacts the mounting slot, and the inner two ends are provided with guide blocks that contact the guide surface.

[0014] Preferably, the brush component has an internally connected auxiliary air hole in the middle.

[0015] Compared with the prior art, the present invention has the following advantages: 1. By driving the rotary suction component to adhere to the surface of the packaging bag and moving upward during rotation, the dust on the surface of the packaging bag is cleaned and adsorbed. At the same time, by actively adsorbing the packaging bag area at the seam, and with the help of the micro-adjustment component to pull open, the adsorption space can be used to adsorb and clean the seam area. The cleaning action is continuous and reliable, and the cleaning efficiency is high. 2. The structure of the rotary suction component can not only clean the dust on the surface of the packaging bag by rotating, but also complete the adsorption with the adsorption holes to prevent the dust from spreading. At the same time, the adsorption holes can also actively adsorb the packaging bag after the rotating sleeve stops rotating, which can be used to open the packaging bag at the seam for subsequent cleaning. 3. The design of the negative pressure trigger ensures the connection of some adsorption holes while controlling the extension of the brush. It can actively switch between the rotation cleaning state and the adsorption state of the packaging bag to prevent interference. 4. The micro-adjustment structure design does not affect the displacement and clamping of the suction component along the track frame, and when needed, it can be actively pulled laterally away to realize the opening action of the packaging bag. The structure is compact and reliable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the device; Figure 2 This is a diagram illustrating the clamping and merging state of the cleanup components. Figure 3 To clean up the component structure diagram; Figure 4 This is a schematic diagram of the track frame structure layout; Figure 5 This is a magnified view of the location of the negative pressure chamber. Figure 6 This is a schematic diagram showing the connection between the suction component and the track frame; Figure 7 This is a schematic diagram of the slewing sleeve installation. Figure 8 Front view of the connection between the rotating sleeve and the end of the negative pressure trigger; Figure 9 This is a schematic diagram of the internal layout of the rotary sleeve; Figure 10 This is a sectional view of the slewing sleeve; Figure 11 This is a schematic diagram of the negative pressure triggering element. Figure 12 This is a schematic diagram of the brush component structure.

[0017] In the diagram: 1. Suspension frame; 2. Cleaning assembly; 3. Hanging frame; 4. Track frame; 5. Swirl suction component; 6. Frame; 7. Rotating sleeve; 8. Negative pressure trigger component; 9. Brush component; 101. First thrust component; 102. Support rod; 301. Sliding hole; 302. Second thrust component; 303. Sliding groove; 401. Fine-tuning component; 402. Adsorption space; 403. Slider; 404. Mounting plate; 405. Negative pressure chamber; 406, jet nozzle; 407, third thrust component; 408, hook plate; 601, guide post; 602, return spring; 603, docking plate; 701, suction hole; 702, mounting groove; 801, fourth thrust component; 802, suction sleeve; 803, sleeve; 804, guide surface; 805, horizontal notch; 901, compression spring; 902, guide block; 903, auxiliary air hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0019] Specific implementation method one: Combining Figure 1-12 As shown, a fire-retardant coating outbound cleaning device includes: a suspension frame 1 and a cleaning assembly 2; the suspension frame 1 is provided with a first thrust member 101 on both sides, the first thrust member 101 is a hydraulic cylinder structure, and the cleaning assembly 2 is arranged in pairs, specifically including a suspension frame 3, a track frame 4 and a suction member 5; the suspension frame 3 is slidably connected to the suspension frame 1 above and connected to the first thrust member 101, and can be driven by the first thrust member 101 to make horizontal displacement, realizing the clamping and separation action of the track frame 4 and the suction member 5. The track frame 4 is horizontally arranged on the suspension frame 1. Below the hanging frame 3, and can be moved up and down along the hanging frame 3, the track frame 4 is symmetrically provided with fine adjustment parts 401. The fine adjustment parts 401 can pull the swivel suction part 5 to move away from the packaging bag. The two ends of the swivel suction part 5 are slidably connected to the track frame 4, and the inner side is elastically supported and connected to the track frame 4. After the packaging bag comes into contact, it can keep it in close contact with the shape of the packaging bag at each position. After the two track frames 4 are connected, a negative pressure adsorption space 402 can be formed directly above. The adsorption space 402 can generate a downward airflow and adsorb the area again.

[0020] Preferred embodiments, in combination Figure 1-3As shown, the suspension frame 1 has multiple support rods 102 in the middle, and the suspension frame 3 has a sliding hole 301 connected to the support rods 102 above it. The two form a sliding support and are displaced under the drive of the first thrust member 101. There are four support rods 102 arranged in a rectangular shape, which can improve the displacement stability and connection strength of the cleaning component 2.

[0021] Preferred embodiments, in combination Figure 3 and Figure 4 As shown, the suspension frame 3 has a second thrust member 302 above it and a sliding groove 303 below it; the track frame 4 has sliders 403 at the front and rear that are slidably connected to the sliding groove 303, and is connected to the second thrust member 302 above it. The height of the suction part 5 is adjusted by driving the sliders 403 to move along the sliding groove 303 through the second thrust member 302; the second thrust member 302 adopts a hydraulic cylinder structure.

[0022] Preferred embodiments, in combination Figure 4-6 As shown, a mounting plate 404 is provided at the upper edge of the track frame 4, and a negative pressure chamber 405 is provided at the outer edge of the mounting plate 404. Multiple jet heads 406 are evenly spaced along the length of the mounting plate 404. The jet heads 406 are connected to the air supply device through rubber hoses to generate a downward high-speed airflow, which blows out the dust at the sewn position of the packaging bag. The jet heads 406 are arranged close to the negative pressure chamber 405. When two negative pressure chambers 405 are joined together, they can form a rectangular receiving space with an open bottom, which is the adsorption space 402. Each negative pressure chamber 405 has an air outlet on one side, which is connected to the exhaust device through a rubber hose. First, the downward airflow generated by the jet heads 406 blows the powder at the open sewn position. Then, the adsorption airflow generated by the receiving space adsorbs the dust. The jet heads 406 can use multiple short jets instead of continuously spraying air.

[0023] Preferred embodiments, in combination Figure 4 and Figure 6 As shown, the fine-tuning component 401 includes a third thrust component 407 and a hook plate 408. The third thrust component 407 is fixedly connected to the track frame 4, and the end of its push rod is fixedly connected to the hook plate 408. The end of the hook plate 408 is in the initial formation position of the suction component 5 (i.e., in the clamping state). When the suction hole 701 achieves suction with the packaging bag, the third thrust component 407 pulls the hook plate 408 to move laterally. The hook plate 408 contacts the docking plate 603 and drives the frame 6 to move a certain distance, such as 5-10 cm, to open the top of the packaging bag and expose the seam. However, the distance should not be too large, as it may cause the suction hole 701 to detach from the packaging bag.

[0024] Preferred embodiments, in combination Figure 6-12As shown, the suction device 5 includes a frame 6 and a rotating sleeve 7. The two ends of the frame 6 are slidably connected to the track frame 4. A guide post 601 is provided inside the frame 6. One end of the guide post 601 is fixedly connected to the track frame 4, and the other end passes through the inside of the frame 6. A return spring 602 is fitted on the guide post 601. The return spring 602 ensures that the rotating sleeve 7 maintains a close contact with the packaging bag and remains unaffected when clamped in areas with fire-retardant coating. Negative pressure triggers 8 are provided at the front and rear of the frame 6. The two ends of the rotating sleeve 7 are connected to the rotating shaft of the frame 6, and a gear is installed at one end. The frame 6 has a control motor that drives the gear to rotate, thus controlling the rotation of the rotating sleeve 7. The rotating drive has three brush pieces 9 arranged along the circumference of the rotating sleeve 7, which are in contact with the negative pressure trigger 8. When cleaning the surface of the packaging bag, the end face of the brush piece 9 extends beyond the outer diameter of the rotating sleeve 7. However, when adsorbing the packaging bag, the end face of the brush piece 9 does not extend beyond the outer diameter to avoid interference. By uniformly arranging adsorption holes 701 in the area between two adjacent brush pieces 9, continuous adsorption can be generated in the rotating state to collect the dust. In the adsorption state, it acts as a suction cup to grasp the packaging bag. Under the design power limit, the negative pressure trigger 8 only maintains communication with the adsorption holes 701 that reach the horizontal outer area, so that the adsorption holes 701 in this area have both adsorption collection and suction cup functions.

[0025] Preferred embodiments, in combination Figure 6 As shown, the left side of the frame 6 is provided with a docking plate 603 connected to the fine-tuning component 401, which is used to connect with the hook plate 408, while not affecting the displacement of the frame 6 towards the third thrust component 407.

[0026] Preferred embodiments, in combination Figure 7 , Figure 8 , Figure 9 and Figure 11As shown, the negative pressure trigger 8 includes a fourth thrust member 801, a suction sleeve 802, and a sleeve 803. The fourth thrust member 801 is fixed to the end of the frame 6. One end of the suction sleeve 802 is fixedly connected to the fourth thrust member 801, and the other end is fixedly connected to the sleeve 803 and communicates with the sleeve 803. A guide surface 804 is provided near the end of the sleeve 803, and a horizontal notch 805 pointing outward is provided on the sleeve 803. The fourth thrust member 801 pushes the suction sleeve 802 and the sleeve 803 to move axially as a whole. The guide surface 804 can push the brush member 9 to extend outward, and the sleeve 803... The diameter is equal to the inner diameter of the rotating sleeve 7. In order to improve the sealing performance, a sealing gasket can be installed on the sleeve 803 to reduce air leakage at the horizontal notch 805. Moreover, the length design of the sleeve 803 reserves space for overall axial displacement to prevent motion interference. When the power is sufficient, the sleeve 803 can also be designed as a disc with a disc diameter equal to the inner diameter of the rotating sleeve 7, so that the entire interior of the rotating sleeve 7 is a negative pressure adsorption space, and each adsorption hole 701 has suction force to improve the dust collection effect. The suction sleeve 802 also uses a rubber hose to connect to the external suction device.

[0027] Preferred embodiments, in combination Figure 10 and Figure 12 As shown, the rotating sleeve 7 is provided with three mounting slots 702; the brush part 9 is slidably connected to the mounting slots 702, and the outer side of the brush part 9 is provided with a compression spring 901 that contacts the mounting slot 702. By overcoming the elastic force of the compression spring 901, the brush part 9 can be extended. At the same time, the inner ends of the brush part 9 are provided with guide blocks 902 that contact the guide surface 804. Under the action of the elastic force of the compression spring 901, the guide blocks 902 maintain contact with the guide surface 804.

[0028] Preferred embodiments, in combination Figure 12 As shown, the brush component 9 has internally connected auxiliary air holes 903 in its middle part. The auxiliary air holes 903 are located at the center plane of the brush component 9 and are distributed at equal intervals along the length direction. Figure 12 In the middle, the brush part on the right side of the brush part 9 is located at the upper and lower corners of the right end, and the middle part is reserved for the arrangement of auxiliary air holes 903. The design of auxiliary air holes 903 can avoid the situation where the brush part 9 is exactly in a horizontal position, but the packaging bag needs to be adsorbed.

[0029] Working principle: In working scenario 1, the entire device is placed on a conveyor belt for fire-retardant coating packaging bags. Based on the bag's specifications, the second thrust member 302 sets the minimum initial height of the track frame 4. When the filled packaging bag is conveyed to the positions of the two cleaning components 2, it stops. The first thrust member 101 pushes the cleaning components 2 closer and clamps them. At this point, the upper edge of the packaging bag is slightly lower than the adsorption space 402. The rotating sleeve 7, under the action of the return spring 602, maintains contact with the surface of the packaging bag. Then, the motor drives the rotating sleeve 7 to rotate, and the negative pressure trigger member 8 quickly pushes out the brush component 9. This, combined with the second thrust member 302, pulls the track frame 4 upward, achieving cleaning and adsorption of the outer area of ​​the packaging bag's seam. When the horizontal position of the rotating sleeve 7 approaches the upper edge of the packaging bag, the rotating sleeve 7 stops rotating, and the negative pressure trigger member 8 activates and drives the brush... When component 9 is reset, the brush component 9 retracts into the mounting slot 702, and the suction hole 701 functions as a suction cup to grasp the packaging bag. At this time, the suction space 402 is at a certain height from the upper edge of the packaging bag, which is close to the upward movement distance of the track frame 4. Then, the fine-tuning component 401 pulls the rotating sleeve 7 to move, opening the packaging bag to a certain space. The jet head 406 quickly generates a downward airflow, which is guided through the edge of the packaging bag and blown towards the seam, blowing up the dust there. Since the jet head 406 is symmetrically arranged and guided by the packaging bag, the two airflows eventually collide at the seam, generating an upward turbulence. At this time, the negative pressure chamber 405 begins to adsorb and collect, cleaning the entire packaging bag. Finally, all components are reset, waiting for the next packaging bag to enter. The whole process is efficient and fast, requiring no manual intervention, and avoids dust stirring, protecting the cleanliness of the factory's internal environment.

[0030] This device is also applicable to large-area external cleaning of packaging bags and cleaning of seam positions. Specifically, the first thrust member 101 does not clamp the bag into place all at once, but stops after contacting the surface of the packaging bag at the position of the negative pressure chamber 4. The negative pressure chamber 4 plays an auxiliary role in clamping the bag material. At the same time, it is necessary to ensure that the surface of the negative pressure chamber 4 is smooth to avoid scratching the packaging bag during the upward movement. After clamping, the negative pressure trigger member 8 drives the brush member 9 to extend, which, together with the second thrust member 302, pulls the track frame 4 upward as a whole to achieve cleaning of the packaging bag. After reaching the seam position, the first thrust member 101 drives the track frame 4 to fully dock and form an adsorption space 402. The subsequent cleaning of the seam position is the same as the principle in working scenario 1.

[0031] In the specific implementation of this invention, actual testing has verified that compared with traditional manual blowing or single dust suction cleaning methods, the device of this invention can control the cleaning time of a single bag to within 8 seconds when processing a standard 25kg fireproof coating packaging bag, and the dust concentration in the working area is less than 0.5 mg / m³, which is significantly better than manual operation (average time of more than 30 seconds, dust concentration of 5-10mg / m³).

[0032] This invention achieves an integrated automated process of rotary cleaning, adsorption and grabbing, bag opening opening, and directional powder cleaning at the seam through the coordinated operation of the rotary suction component 5, the fine adjustment component 401, and the adsorption space 402. The opposing arrangement of the jet nozzle 406 and the negative pressure chamber 405 creates local turbulence in the seam area, effectively stripping and capturing fine dust embedded in the seam, solving the long-standing industry pain point of "difficult-to-clean seam residue". This technical solution is not only applicable to fire-retardant coating powder bags, but can also be extended to bagged outbound scenarios of other powder materials such as cement, pesticides, and food additives.

[0033] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A device for cleaning and releasing fire-retardant coatings, characterized in that, include: The suspension frame (1) and the cleaning assembly (2) are provided with first thrust members (101) on both sides of the suspension frame (1). The cleaning assembly (2) is arranged in pairs. The cleaning assembly (2) includes a suspension frame (3), a track frame (4) and a suction member (5). The upper part of the suspension frame (3) is slidably connected to the suspension frame (1) and connected to the first thrust member (101). The track frame (4) is horizontally arranged below the suspension frame (3) and can move up and down along the suspension frame (3). The track frame (4) is symmetrically provided with fine adjustment members (401). The two ends of the suction member (5) are slidably connected to the track frame (4) respectively, and the inner side is elastically supported and connected to the track frame (4). After the two track frames (4) are docked, a negative pressure adsorption space (402) can be formed directly above.

2. The fire-retardant coating outbound cleaning device according to claim 1, characterized in that: The suspension frame (1) is provided with multiple support rods (102) in the middle, and the suspension frame (3) is provided with sliding holes (301) connected to the support rods (102) above.

3. The fire-retardant coating outbound cleaning device according to claim 1, characterized in that: The suspension frame (3) is provided with a second thrust member (302) above and a sliding groove (303) below; the track frame (4) is provided with sliders (403) at the front and rear, which are slidably connected to the sliding grooves (303), and connected to the second thrust member (302) above.

4. The fire-retardant coating outbound cleaning device according to claim 1, characterized in that: The track frame (4) has an installation plate (404) at its upper edge and a negative pressure chamber (405) at its outer edge. Multiple jet nozzles (406) are provided at equal intervals along the length of the installation plate (404) and are arranged close to the negative pressure chamber (405).

5. The fire-retardant coating outbound cleaning device according to claim 1, characterized in that: The fine-tuning component (401) includes a third thrust component (407) and a hook plate (408); the third thrust component (407) is fixedly connected to the track frame (4), and its push rod end is fixedly connected to the hook plate (408).

6. The fire-retardant coating outbound cleaning device according to claim 1, characterized in that: The suction component (5) includes a frame (6) and a rotating sleeve (7); the two ends of the frame (6) are slidably connected to the track frame (4), and the inner side of the frame (6) is provided with a guide post (601). One end of the guide post (601) is fixedly connected to the track frame (4), and the other end passes through the inner side of the frame (6) and is fitted with a reset spring (602). The front and rear of the frame (6) are respectively provided with negative pressure triggers (8); the rotating sleeve (7) is connected to the rotating shaft of the frame (6), and three brushes (9) connected to the negative pressure triggers (8) are provided along the circumference of the rotating sleeve (7). Adsorption holes (701) are evenly provided in the area between two adjacent brushes (9). The negative pressure triggers (8) drive the brushes (9) in the rotating state to extend and keep them connected to the adsorption holes (701) that enter the corresponding area.

7. The fire-retardant coating outbound cleaning device according to claim 6, characterized in that: The left side of the frame (6) is provided with a docking plate (603) that is connected to the fine-tuning component (401).

8. The fire-retardant coating outbound cleaning device according to claim 6, characterized in that: The negative pressure trigger (8) includes a fourth thrust member (801), an air suction sleeve (802), and a sleeve (803); the fourth thrust member (801) is fixed to the end of the frame (6), one end of the air suction sleeve (802) is fixedly connected to the fourth thrust member (801), and the other end is fixedly connected to the sleeve (803) and communicates with the sleeve (803), and a guide surface (804) is provided near the end of the sleeve (803), and a horizontal notch (805) pointing outward is provided on the sleeve (803).

9. The fire-retardant coating outbound cleaning device according to claim 8, characterized in that: The rotating sleeve (7) is provided with three mounting slots (702); the brush part (9) is slidably connected to the mounting slots (702), the outer side of the brush part (9) is provided with a compression spring (901) that contacts the mounting slot (702), and the inner two ends are provided with guide blocks (902) that contact the guide surface (804).

10. The fire-retardant coating outbound cleaning device according to claim 8, characterized in that: The brush part (9) is provided with an auxiliary air hole (903) with internal communication in the middle.