A fireproof coating spraying equipment with negative pressure dust removal function

Abstract

This utility model relates to the field of spraying devices, specifically to a fireproof coating spraying device with negative pressure dust removal function. It includes a spray gun, an air baffle plate on the outside of the spray gun nozzle, a dustproof mask covering the outside of the spray gun, and a pipe assembly on the inside of the dustproof mask. This application uses the dustproof mask to prevent large-area diffusion of the coating after spraying. Based on the characteristic that users need to move the spray gun over a large area and the tendency for the dustproof mask and spray gun to shift, the air distribution pipe connects with the inside of the dustproof mask after the shift. The negative pressure in the air distribution pipe absorbs the coating sprayed from the spray gun and remaining inside the dustproof mask. To prevent the dustproof mask from easily sticking to the surface of objects due to negative pressure during movement, the edges of the dustproof mask are raised using blocking balls. This raising maintains communication between the inside and outside of the dustproof mask, preventing complete adsorption. Simultaneously, the pipe assembly can absorb dust using the rolling of the blocking balls.

Description

Technical Field

[0001] This utility model relates to the field of spraying devices, specifically to a fireproof coating spraying equipment with negative pressure dust removal function. Background Technology

[0002] A spray gun is a handheld device that uses the rapid release of liquid or compressed air as power. When using a spray gun, a mask must be worn to avoid inhalation. To avoid excessive air pollution, manufacturers usually select a separate room for spraying. The following problems may occur during the spraying process. 1. Although spraying in a sealed environment can prevent the paint from spreading over a large area, it is still necessary to clean the sealed space regularly. How to reduce the large amount of spray residue that is left outside during the spraying process? 2. The existing negative pressure exhaust structure, although it absorbs atomized paint, still absorbs a large amount of dust, causing the absorbed dust and paint to mix together and become difficult to collect. 3. If the spray gun needs to be stopped during the spraying process, it usually needs to be suspended somewhere to prevent it from being stepped on and damaged. Although the existing suspension bracket can solve this problem, it is not convenient.

[0003] To address these issues, those skilled in the art have designed a fire-retardant coating spraying device with negative pressure dust removal function. Utility Model Content

[0004] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a fireproof coating spraying device with negative pressure dust removal function, which can reduce the amount of coating sprayed into the air.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: it includes a spray gun, an air baffle plate is provided on the outside of the spray gun nozzle, a dustproof mask is wrapped around the outside of the spray gun, a pipe assembly is provided on the inside of the dustproof mask, and an air extraction assembly wrapped around the outside of the spray gun is provided at the rear end of the dustproof mask. The pipe assembly includes a support pipe located inside the dustproof mask, one end of the support pipe is connected to the edge of the dustproof mask, the other end of the support pipe is connected to the air extraction assembly, and the air extraction assembly is connected to an air pump.

[0006] Preferably, the air extraction assembly includes a rear plug surrounding the outside of the spray gun. The rear plug is fixedly connected to the dust mask, and air distribution pipes are equidistantly penetrating the surface of the rear plug. When the spray gun and the air extraction assembly are coaxially distributed, the air baffle blocks all the air distribution pipes.

[0007] Preferably, the air extraction assembly further includes a ring connected to the rear end of the rear plug, the ring being interconnected with all the air distribution pipes, and the end of the ring away from the rear plug being connected to a main pipe.

[0008] Preferably, the pipe assembly further includes a blocking ball located inside the support tube. The outer edge of the dust mask is slidably connected to the blocking ball through an opening. The blocking balls are equidistantly distributed along the outermost edge of the dust mask. A spring is provided between the blocking ball and the support tube. The blocking ball protrudes from the outer side of the dust mask.

[0009] Preferably, the rear plug is made of flexible rubber. When the spray gun and the air baffle are deflected to one side relative to the dust mask, the deflection of the air baffle will expose the air distribution pipe on the other side.

[0010] Preferably, the end of the support tube furthest from the blocking ball is connected to the gas distribution tube.

[0011] Preferably, the dust mask is covered by a cover body, and the cover body and the dust mask are slidably connected.

[0012] Preferably, a filter cotton is provided inside the support tube, and a zipper is provided on the surface of the dust mask and the support tube.

[0013] The beneficial effects of this utility model are as follows: This application uses a dust mask to prevent large-area diffusion of paint after spraying. Based on the characteristic that users need to move a large area when operating the spray gun, and based on the characteristic that the dust mask and the spray gun are prone to displacement, the displacement causes the air distribution pipe to connect with the inside of the dust mask. The negative pressure in the air distribution pipe absorbs the paint sprayed by the spray gun and remaining in the dust mask. In order to prevent the dust mask from being easily sucked onto the surface of the object due to negative pressure when moving, the edge of the dust mask is raised by a blocking ball. By raising it, the inner and outer sides of the dust mask are kept connected, avoiding complete adsorption. At the same time, the pipe assembly can also absorb dust by the rolling of the blocking ball. When not in use, the outer cover of the dust mask slides forward to fill the gap at the edge of the dust mask. Then, press the spray gun directly onto the object surface. The resulting negative pressure will firmly adhere and fix the dust mask and spray gun to the surface of the equipment that needs to be sprayed. Therefore, in summary, negative pressure can not only perform dust extraction, but also absorb excess spray material while the spray gun is moving. It can also be used to fix the dust mask and spray gun to the surface of the object being sprayed, achieving a multi-functional effect of negative pressure. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0016] Figure 2 This is a side view of the internal structure of this utility model.

[0017] Figure 3 This is the utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0018] Figure 4 This is the utility model Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0019] Figure 5 This is a schematic diagram of the spray gun deflection structure of this utility model.

[0020] Figure 6 This is a schematic diagram of the blocking ball retraction and rolling structure of this utility model.

[0021] Figure 7 This is a schematic diagram of the outward extension structure of the cover of this utility model.

[0022] In the picture: 1. Spray gun; 101. Air baffle; 2. Dust mask; 3. Pipe assembly; 301. Support pipe; 302. Blocking ball; 4. Air extraction assembly; 401. Rear plug; 402. Air distribution pipe; 403. Ring body; 404. Main pipe; 5. Cover body. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; 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 refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1: This utility model provides a fireproof coating spraying equipment with negative pressure dust removal function, such as... Figure 1-7 As shown, the device includes a spray gun 1, an air baffle 101 on the outside of the nozzle of the spray gun 1, a dust mask 2 wrapped around the outside of the spray gun 1, a pipe assembly 3 on the inside of the dust mask 2, and an air extraction assembly 4 wrapped around the outside of the spray gun 1 at the rear end of the dust mask 2. The pipe assembly 3 includes a support pipe 301 located inside the dust mask 2. One end of the support pipe 301 is connected to the edge of the dust mask 2, and the other end of the support pipe 301 is connected to the air extraction assembly 4. The air extraction assembly 4 is connected to an air pump.

[0028] The extraction assembly 4 includes a rear plug 401 surrounding the outside of the spray gun 1. The rear plug 401 is fixedly connected to the dust mask 2, and the surface of the rear plug 401 is equidistantly perforated with air distribution pipes 402. When the spray gun 1 and the extraction assembly 4 are coaxially distributed, the baffle plate 101 blocks all the air distribution pipes 402. The air distribution pipes 402 can directly extract gas from the dust mask 2, but the air distribution pipes 402 are completely covered by the baffle plate 101. When the baffle plate 101 and the air distribution pipes 402 do not shift, the air distribution pipes 402 cannot extract gas from the dust mask 2.

[0029] The air extraction assembly 4 also includes an annular body 403 connected to the rear end of the rear plug 401. The annular body 403 is interconnected with all the air distribution pipes 402. The end of the annular body 403 away from the rear plug 401 is connected to a main pipe 404. The annular body 403 is used to connect all the air distribution pipes 402 so that all the air distribution pipes 402 can generate the same negative pressure and collect all the extracted gas onto the main pipe 404.

[0030] The pipe assembly 3 also includes a blocking ball 302 located inside the support tube 301. The outer edge of the dust mask 2 is slidably connected to the blocking ball 302 through an opening. The blocking balls 302 are equidistantly distributed along the outermost edge of the dust mask 2. A spring is provided between the blocking ball 302 and the support tube 301. The blocking ball 302 protrudes from the outer side of the dust mask 2. The function of the blocking ball 302 is to raise the edge of the dust mask 2, so that there is a certain gap between the edge of the dust mask 2 and the surface of the object. This can prevent the dust mask 2 from being sucked onto the surface of the object by the negative pressure, and facilitate the sliding of the spray gun 1 and the dust mask 2 on the surface of the object. Secondly, when the blocking ball 302 comes into contact with the surface of the object, under the push of the reaction force, the blocking ball 302 slides backward, and the gap between the blocking ball 302 and the opening appears, which causes the negative pressure to absorb dust outward through the support tube 301. The blocking ball 302 can also bring dust into the inside of the support tube 301 by rolling.

[0031] The rear plug 401 is made of flexible rubber. When the spray gun 1 and the air baffle 101 deflect to one side relative to the dust mask 2, the deflection of the air baffle 101 will expose the air distribution pipe 402 on the other side. When the spray gun 1 sprays on the surface of the object, it should spray while moving. When the spray gun 1 moves, it will have a deflection displacement with the dust mask 2 attached to the surface of the object. Similarly, the air baffle 101 will also have a deflection and displacement with the air distribution pipe 402, causing the air distribution pipe 402 to be completely connected to the inside of the dust mask 2. After the connection is made, the spray material sprayed by the spray gun 1 and remaining inside the dust mask 2 can be removed by suction. When the spray gun 1 stops moving, the deflection between the spray gun 1 and the dust mask 2 will be eliminated, and the air distribution pipe 402 will be blocked by the dust mask 2 again.

[0032] The end of the support tube 301 away from the blocking ball 302 is connected to the gas distribution tube 402. A negative pressure is formed in the support tube 301 through the gas distribution tube 402, and the gas in the support tube 301 is also guided into the gas distribution tube 402.

[0033] The dust mask 2 is wrapped with a cover body 5 on the outside, and the cover body 5 and the dust mask 2 are slidably connected. Because the edge of the dust mask 2 is raised due to the presence of the blocking ball 302, the dust mask 2 cannot be completely close to the surface of the object. When the cover body 5 slides forward, the cover body 5 will exceed the edge of the dust mask 2. In this state, the dust mask 2 is more suitable for adhering to the surface of the object.

[0034] The inner side of the support tube 301 is equipped with filter cotton, and the dust mask 2 and the surface of the support tube 301 are equipped with zippers. The function of the filter cotton is to block dust. During later maintenance, the cover 5 can be removed and the outer zipper of the dust mask 2 can be opened. At the same time, the inner side of the support tube 301 will also be opened. At this time, the filter cotton can be replaced. The filter cotton ensures that most of the paint sprayed from the spray gun 1 is absorbed at the end of the vacuum pump, reducing dust contamination and facilitating recycling.

[0035] When in use, first press the dust mask 2 tightly against the surface of the item. When it is pressed tightly, the blocking ball 302 receives the reaction force from the surface and slides towards the inside of the opening of the dust mask 2. At this time, turn on the vacuum pump to continuously pump air. After the blocking ball 302 slides, the gap between it and the opening is one of the channels for dust to enter. The dust will enter the support tube 301. Since the spray gun 1 needs to continuously slide and spray paint on the surface of the item, the blocking ball 302 on the dust mask 2 will also continuously roll in this process. Through the rolling, the dust on the surface of the item can also be brought into the inside of the support tube 301. The gas drawn by the vacuum pump passes through the filter cotton inside the support tube 301, then through the gas distribution tube 402 and the ring 403, and finally flows away from the main tube 404. When spray gun 1 is spraying paint onto the surface of an item, the user will continuously move the spray gun to maintain even spraying. The dust mask 2 will be pressed against the surface of the item. As the spray gun 1 slides, it will deviate slightly relative to the dust mask 2. Figure 5 This causes the air baffle plate 101 and the air distribution pipe 402 to shift. The air distribution pipe 402 was originally covered by the air baffle plate 101, but it was opened after the shift, quickly absorbing the excess spray scattered inside the dust mask 2. The spray is discharged from the main pipe 404 along the air distribution pipe 402 and the ring body 403, thus completing the collection of excess spray material.

[0036] When it is necessary to pause the spraying, first manually push the cover 5 outwards, as shown. Figure 7 After being pushed, the cover 5 will extend beyond the edge of the dust mask 2. At this point, press the entire dust mask 2 and the edge of the cover 5 onto the surface of the object, and forcefully push the spray gun 1 perpendicular to the surface of the object. During this process, the spray gun 1 will exert a certain amount of pressure on the rear plug 401. Therefore, the entire air extraction component 4 should be made of hard rubber, forcing the air baffle 101 to separate from the air distribution pipe 402. The air distribution pipe 402 directly contacts the sealed inner side of the dust mask 2. Under the action of negative pressure, it quickly dries out part of the gas inside and generates a negative pressure effect. Then release your hand. In this way, the spray gun 1 and the entire dust mask 2 are adsorbed onto the surface of the object. When the user needs to use it again, he only needs to pull it off forcefully. Do not allow too much gas to be drawn out from the inside of the dust mask 2, making it difficult to pull off.

[0037] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. A fire-retardant coating spraying equipment with negative pressure dust removal function, characterized in that, The spray gun (1) is provided with a baffle plate (101) on the outside of the nozzle of the spray gun (1). The spray gun (1) is wrapped with a dust mask (2). The dust mask (2) is provided with a pipe assembly (3) on the inside. The dust mask (2) is provided with an air extraction assembly (4) wrapped around the outside of the spray gun (1) at the rear end. The pipe assembly (3) includes a support pipe (301) located inside the dust mask (2). One end of the support pipe (301) is connected to the edge of the dust mask (2), and the other end of the support pipe (301) is connected to the air extraction assembly (4). The air extraction assembly (4) is connected to an air pump.

2. The fireproof coating spraying equipment with negative pressure dust removal function according to claim 1, characterized in that, The extraction assembly (4) includes a rear plug (401) surrounding the outside of the spray gun (1). The rear plug (401) is fixedly connected to the dust mask (2), and the surface of the rear plug (401) is equidistantly perforated by air distribution pipes (402). When the spray gun (1) and the extraction assembly (4) are coaxially distributed, the air baffle (101) blocks all the air distribution pipes (402).

3. The fireproof coating spraying equipment with negative pressure dust removal function according to claim 2, characterized in that, The air extraction assembly (4) also includes an annular body (403) connected to the rear end of the rear plug (401). The annular body (403) is interconnected with all the air distribution pipes (402). The end of the annular body (403) away from the rear plug (401) is connected to a main pipe (404).

4. The fireproof coating spraying equipment with negative pressure dust removal function according to claim 2, characterized in that, The pipe assembly (3) also includes a blocking ball (302) located inside the support tube (301). The outer edge of the dust mask (2) is connected to the blocking ball (302) through an opening. The blocking balls (302) are equidistantly distributed along the outermost edge of the dust mask (2). A spring is provided between the blocking ball (302) and the support tube (301). The blocking ball (302) protrudes out of the outer side of the dust mask (2).

5. The fireproof coating spraying equipment with negative pressure dust removal function according to claim 2, characterized in that, The rear plug (401) is made of flexible rubber. When the spray gun (1) and the air baffle (101) deflect to one side relative to the dust mask (2), the deflection of the air baffle (101) will expose the air distribution pipe (402) on the other side.

6. The fireproof coating spraying equipment with negative pressure dust removal function according to claim 4, characterized in that, The end of the support tube (301) away from the blocking ball (302) is connected to the gas distribution tube (402).

7. The fireproof coating spraying equipment with negative pressure dust removal function according to claim 1, characterized in that, The dust mask (2) is covered by a cover (5) on the outside, and the cover (5) and the dust mask (2) are slidably connected.

8. The fireproof coating spraying equipment with negative pressure dust removal function according to claim 4, characterized in that, The inner side of the support tube (301) is provided with filter cotton, and the dust mask (2) and the surface of the support tube (301) are provided with zippers.

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