Powder spraying device with powder recycling function

Abstract

The invention discloses a powder spraying device with a powder recycling function. The powder spraying device comprises a machine shell, at least two powder barrels are installed on the machine shell, and a working bin and a powder bin are arranged on the machine shell; at least one conveying pipe is connected to the powder barrel, and at least one recycling assembly is installed in the working bin; the recycling assembly comprises a negative pressure barrel, a negative pressure part and a collecting barrel, the negative pressure barrel is installed on the upper portion of the collecting barrel and communicated with the collecting barrel, one end of the negative pressure part penetrates through the negative pressure barrel and extends into the collecting barrel, the other end of the negative pressure part is communicated with a negative pressure pipe through an adapter, and the negative pressure pipe is communicated with the air suction end of the fan so that negative pressure can be formed in the negative pressure barrel; and a gland for covering the collecting barrel is arranged at the lower part of the negative pressure barrel. The powder spraying device has the beneficial effects that the powder changing convenience during powder spraying can be effectively improved through the multiple powder barrels; negative pressure is formed in the negative pressure barrel through the draught fan, the powder can enter the collecting barrel through the negative pressure barrel to be recycled under the guidance of the collecting bin, and the utilization rate of powder resources can be remarkably increased.

Description

Technical Field

[0001] The present application relates to the technical field of powder spraying devices, and particularly to a powder spraying device with a powder recycling function. Background Art

[0002] The powder spraying device is a commonly used tool during product painting. The product can be placed in the powder spraying chamber for painting. During powder spraying, the shovel needs to be continuously rotated and cooperate with the spray gun to continuously spray the powder onto the product surface. However, when the powder collides with the product surface, a part of the powder will float in the air and fall under the action of gravity. Over time, waste materials will accumulate under the powder spraying chamber, resulting in waste of powder resources. Therefore, there is an urgent need for a powder spraying device with a powder recycling function.

[0003] Most of the existing powder spraying devices directly recycle the residual powder in the powder spraying chamber through an exhaust fan. Although it can improve the internal environment of the powder spraying chamber, it cannot separate and recycle different powders, which undoubtedly increases the production cost of the product. In addition, most traditional powder spraying devices are only equipped with one powder barrel. When it is necessary to change the spraying color of the product, the powder barrel needs to be carried, increasing the burden on the staff. Summary of the Invention

[0004] One of the purposes of the present application is to provide a powder spraying device with a powder recycling function that can solve at least one of the defects in the above background art.

[0005] To achieve at least one of the above purposes, the technical solution adopted in the present application is as follows: A powder spraying device with a powder recycling function includes a machine shell. At least two powder barrels are installed on the machine shell. A working chamber for powder spraying and a powder bin for placing the powder barrels are provided on the machine shell. At least one feeding pipe is connected to the powder barrel. At least one recycling component for recycling powder is installed in the working chamber. The recycling component includes a negative pressure barrel, a negative pressure member, and a collection barrel. The negative pressure barrel is installed on the upper part of the collection barrel and is communicated with the collection barrel. The negative pressure member is fixedly connected to the negative pressure barrel. One end of the negative pressure member passes through the negative pressure barrel and extends into the collection barrel, and the other end is communicated with a negative pressure pipe through an adapter. The negative pressure pipe is communicated with the suction end of the fan to form a negative pressure in the negative pressure barrel. A gland for covering the collection barrel is provided at the lower part of the negative pressure barrel.

[0006] Through the above settings, multiple powder barrels can be placed in the powder spraying device to facilitate quick replacement of the powder. The fan can form a negative pressure in the negative pressure barrel through the negative pressure pipe. The powder that is not attached to the product surface during powder spraying can enter the negative pressure barrel through the outer end opening of the negative pressure barrel, and then the powder is transferred to the collection barrel for collection under the action of the negative pressure. The gland can prevent the powder in the collection barrel from spreading to the outside.

[0007] Preferably, a spray gun is connected to the material conveying pipe, a collection port communicating with the outside is arranged on the negative pressure barrel, and the positions of the spray gun and the collection port correspond to each other. With such an arrangement, the material can be transported through the material conveying pipe into the spray gun for powder spraying. When the powder needs to be replaced, the spray gun can be replaced onto the material conveying pipe corresponding to the powder barrel.

[0008] A collection bin is installed on the collection port, and the opening size of the collection bin is larger than that of the collection port. With such an arrangement, the sprayed powder can be accumulated on the collection bin and then enter the negative pressure barrel along the inclined surface of the collection bin for recycling, avoiding waste of resources caused by the powder directly falling to the bottom of the bin.

[0009] Preferably, the adapter itself is bent into an arc shape. One end of the adapter is provided with a mounting port, and the other end is connected with a mounting part. The mounting port communicates with the negative pressure part, and the negative pressure pipe is installed at the upper end of the mounting part. With such an arrangement, the noise generated by air flow can be reduced by the bending of the adapter. The powder that fails to land in the collection barrel can be adsorbed into the adapter and then enter the negative pressure pipe through the mounting part.

[0010] Preferably, the adapter communicates with the middle section of the mounting part, and a detachable cover is installed at the bottom of the mounting part. The cover is used to cooperate with the mounting part to collect the waste in the negative pressure pipe. With such an arrangement, the material remaining on the inner wall of the negative pressure pipe can be collected into the mounting part, avoiding pollution caused by different types of powder directly falling into the collection barrel; when there is a lot of waste in the mounting part, the cover can be opened for cleaning.

[0011] Preferably, a cylinder is installed on the machine shell, and the telescopic rod of the cylinder is fixedly connected to the negative pressure pipe. The cylinder is used to drive the negative pressure pipe to synchronously drive the pressing cover to press against or disengage from the collection barrel. With such an arrangement, when there is a lot of powder in the collection barrel, the cylinder can be used to drive the pressing cover to move upward and disengage from the collection barrel, so as to facilitate the replacement of the collection barrel.

[0012] Preferably, the number of the powder barrels is two, the two powder bins are respectively arranged on both sides of the working bin, and the number of the recovery components is four. With such an arrangement, on the one hand, the convenience of the device in replacing the powder can be improved, avoiding the staff from frequently replacing the powder barrels; on the other hand, the powder spraying efficiency and powder recovery efficiency of the device can be improved.

[0013] Preferably, the distance that the negative pressure barrel extends into the collection barrel ranges from 2 cm to 10 cm. With such an arrangement, the powder can be further prevented from being directly adsorbed into the adapter, effectively improving the powder collection rate.

[0014] Preferably, a discharge pipe is also installed on the casing. One end of the discharge pipe is simultaneously communicated with a plurality of negative pressure pipes, and a cyclone separator for discharging waste is installed at the other end. With such a setting, the collected waste can be centrally transported to the cyclone separator through the discharge pipe for unified discharge and collection.

[0015] Preferably, filter screens are provided at the bottoms of both the powder bin and the working bin. A waste bin is installed below the filter screens, and the waste bin is communicated with the discharge pipe for transporting the waste in the waste bin into the discharge pipe. With such a setting, the waste on both the powder bin and the working bin can be conveyed into the discharge pipe, avoiding the accumulation of waste in the bins.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows:

[0017] A plurality of powder barrels are installed in the casing. When replacing the powder, only the corresponding feeding pipe needs to be replaced or the corresponding spray gun needs to be opened to perform rapid material replacement, effectively improving the convenience of material replacement; a negative pressure is formed in the negative pressure barrel by the fan, and the powder can enter the collection barrel through the negative pressure barrel under the guidance of the collection bin; among them, most of the powder stays in the collection barrel, and a small part of the powder enters the negative pressure pipe along with the air pressure and becomes waste; the recycling component in the present invention can significantly improve the utilization rate of powder resources.

[0018] The adapter has a certain bending curvature, which can prevent the powder in the negative pressure pipe from directly falling into the collection barrel and causing pollution. The waste in the negative pressure pipe can fall to the bottom end of the installation part under the action of gravity. When the powder in the installation part is about to enter the adapter, the cover can be opened to remove the waste in the installation part; further improving the purity of powder recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the powder spraying device in the present application Figure 1 .

[0020] Figure 2 is the overall structural schematic diagram of the powder spraying device in the present application Figure 2 .

[0021] Figure 3 is the cross-sectional structural schematic diagram of the recycling component and the negative pressure pipe in the present application in the connected state.

[0022] Figure 4 is Figure 3 the enlarged structural schematic diagram of the partial A in

[0023] Figure 5 is the structural schematic diagram of the negative pressure barrel in the present application.

[0024] Figure 6 is the structural schematic diagram of the adapter in the present application.

[0025] Figure 7 This is a schematic diagram of the installation structure of the recovery component and the negative pressure pipe in this application.

[0026] Figure 8 is Figure 7 an enlarged schematic diagram of the partial B in

[0027] In the figure: 1. Machine shell; 11. Working bin; 12. Powder bin; 100. Powder barrel; 101. Feeding pipe; 2. Recovery component; 21. Negative pressure barrel; 22. Negative pressure part; 23. Collection barrel; 200. Negative pressure pipe; 210. Gland; 211. Collection port; 212. Collection bin; 3. Adapter; 31. Installation port; 32. Installation part; 300. Cylinder; 301. Piston rod; 320. Sealing cover; 400. Discharge pipe; 500. Cyclone separator; 600. Filter screen. Detailed implementation manners

[0028] Next, in combination with the detailed implementation manners, the present application will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0029] In the description of the present application, it should be noted that for orientation terms, such as the terms "center", "horizontal", "vertical", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence.

[0031] The terms "comprising" and "having" and any variations thereof in the description and claims of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0032] One aspect of the present application provides a powder spraying device with a powder recovery function, such as Figure 1 and Figure 2As shown, one preferred embodiment includes a housing 1, on which at least two powder barrels 100 are installed to facilitate quick replacement of the powder during powder spraying operations. A working chamber 11 for powder spraying and a powder bin 12 for placing the powder barrels 100 are provided on the housing 1. To avoid mutual influence between the powder barrels 100, each powder barrel 100 corresponds to a powder bin 12; a feeding pipe 101 is also connected to the powder barrel to facilitate extraction of the powder in the powder barrel 100.

[0033] Further, as Figure 2 、 Figure 3 and Figure 4 shown, at least one recovery component 2 is installed in the working chamber 11 to facilitate recovery of the powder that has not adhered to the product. The recovery component 2 includes a negative pressure barrel 21, a negative pressure member 22, and a collection barrel 23. The negative pressure barrel 21 is installed on the upper part of the collection barrel 23 and is in communication with the collection barrel 23. The negative pressure member 22 is fixedly connected to the negative pressure barrel 21; wherein, one end of the negative pressure member 21 extends into the collection barrel 23, and the other end is in communication with the negative pressure pipe 200 through an adapter 3. The negative pressure pipe 200 is in communication with the intake end of a blower (not shown in the figure) to facilitate the formation of a negative pressure in the negative pressure barrel 21; a gland 210 for covering the collection barrel 23 is provided at the lower part of the negative pressure barrel 21.

[0034] It can be understood that when powder spraying is carried out, the powder that has not adhered to the product surface can be transferred into the collection barrel 23 for collection under the negative pressure action of the negative pressure barrel 21; and the gland 210 can prevent the powder in the collection barrel 23 from diffusing to the outside.

[0035] Specifically, as Figure 1 and Figure 5 shown, a spray gun (not shown in the figure) is connected to the feeding pipe 101 to ensure that the powder in the powder barrel 100 can enter the spray gun. A collection port 211 communicating with the outside is provided on the negative pressure barrel 21. During operation, the material can be transported to the corresponding spray gun through the feeding pipe 101 for powder spraying. When the powder needs to be replaced, the spray gun can be replaced to the feeding pipe 101 corresponding to the powder barrel 100; or, the spray gun connected to another powder barrel 100 can be directly opened.

[0036] It should be noted that when the number of spray guns is multiple, the multiple corresponding feeding pipes 101 can be connected to one powder barrel 100 simultaneously, or multiple feeding pipes 101 can be respectively connected to multiple powder barrels 100.

[0037] As a supplement, to further improve the speed of the powder reaching the collection barrel 23 from the negative pressure barrel 21, the collection port of the negative pressure barrel 21 is arranged on the tangent line of the negative pressure barrel 21 itself to ensure that the outside air flow can enter the negative pressure barrel 21 through the spiral surface and make the air flow move downward in an inclined spiral motion, accelerating the speed of the powder entering the collection barrel 23.

[0038] In this embodiment, as Figure 4 shown, the distance range that the negative pressure barrel 21 extends into the collection barrel 23 is 2 cm to 10 cm. Ensure that when the powder material just enters the collection barrel 23, it has a certain downward movement speed, thereby avoiding the powder material being directly adsorbed into the adapter 3 and effectively improving the recovery rate of the powder material.

[0039] In this embodiment, as Figure 6 shown, the adapter 3 is bent into an arc shape by itself. One end of the adapter 3 is provided with an installation port 31, and the other end is connected with an installation part 32. The installation port 31 is communicated with the negative pressure part 22 to facilitate the extraction of the air in the collection barrel 23; the upper part of the installation part 32 is communicated and connected with one end of the negative pressure pipe 200.

[0040] It can be understood that if negative pressure needs to be formed in the negative pressure barrel 21, the air needs to be continuously pumped by a blower. Therefore, some of the materials in the collection barrel 23 will enter the negative pressure pipe 200 along with the air flow and become waste materials. In order to improve the recovery rate of the powder material, the adapter 3 is designed into an arc shape, which can block some of the powder materials in the collection barrel 23 from entering the negative pressure pipe 200. In addition, according to the principle of aerodynamics, designing the pipeline into an arc shape can reduce the noise generated by air flow to a certain extent.

[0041] It should be known that during the powder material transmission process, it is inevitable that some powder materials will be adsorbed on the inner wall of the negative pressure pipe 200. As the type of the powder material is changed, when there are multiple types of powder materials attached to the inner wall of the negative pressure pipe 200, they will be mixed to form waste materials. When the machine stops running, the waste materials attached to the inner wall of the negative pressure pipe 200 will fall downward. At this time, if the powder material enters the collection barrel 23, it will cause serious pollution to the powder material in the collection barrel 23.

[0042] In view of the above problems, in some embodiments of the present application, as Figure 6 and Figure 7 shown, the adapter 3 is communicated with the middle section of the installation part 32. The bottom of the installation part 32 is provided with a detachable cover 320, so that the lower end of the installation part 32 can be used to collect waste materials. When the waste materials in the negative pressure pipe 200 fall downward, they can directly enter the lower end of the installation part 32 for storage, avoiding the waste materials from directly entering the collection barrel 23 through the adapter 3 and causing pollution. When there are more waste materials in the installation part 32, the cover 320 can be disassembled to remove the internal waste materials, avoiding the waste materials from piling up higher and higher in the installation part 32 and affecting the recovery purity of the powder material.

[0043] In this embodiment, as Figure 2 and Figure 7As shown in the figure, a collection bin 212 is provided on the collection port 211. The collection bin 212 is surrounded on all four sides to form a funnel shape. In order to better collect the powder sprayed by the spray gun, the opening size of the collection bin 212 needs to be larger than the opening size of the collection port 211, so as to improve the collection range of the negative pressure barrel 21. When the spray gun sprays powder, the powder that is not attached to the surface of the product can collide with the inner wall of the collection bin 212, and then the powder enters the negative pressure barrel 21 along the inclined surface of the collection bin 212 under the action of gravity for recycling, avoiding waste of resources caused by the powder directly falling to the bottom of the working bin 11.

[0044] It should be noted that the shape of the collection bin 212 can be selected according to actual needs, but it is necessary to ensure that when the powder is at the bottom of the collection bin 212, the powder should have a tendency to move towards the collection port 211.

[0045] It should be known that when replacing the collection barrel 23 in the traditional powder spraying device, it generally needs to be manually disassembled, and the parts around it will also be disassembled together, making the process of replacing the collection barrel 23 relatively complicated.

[0046] In this embodiment, as Figure 7 and Figure 8 shown, a cylinder 300 is installed on the housing 1. The piston rod 301 of the cylinder 300 is fixedly connected to the negative pressure pipe 200, so as to drive the negative pressure pipe 200 to synchronously drive the gland 210 to press or disengage from the collection barrel 23. When the staff needs to replace the collection barrel 23, the piston rod 301 on the cylinder 300 can be used to drive the negative pressure pipe 200 to move up synchronously. At this time, the gland 210 on the negative pressure barrel 21 will also move up and release the lock on the collection barrel 23. After the collection barrel 23 is replaced, operating the cylinder 300 again can drive the piston rod 301 to drive the negative pressure pipe 200 to move down until the gland 210 presses and locks the collection barrel 23.

[0047] In this embodiment, as Figure 1 and Figure 2 shown, the number of powder barrels 100 is two. The two powder bins 12 are respectively arranged on both sides of the working bin 11, and the number of recovery components 2 is four. The double powder barrels can further improve the convenience of replacing the powder in this device, avoiding the staff from frequently replacing the powder barrels. The four recovery components 2 can ensure that the powder spraying efficiency and powder recovery efficiency of this device are maintained at a relatively high level. Of course, those skilled in the art can change the specific number of the powder barrels 100 and the recovery components 2 according to actual needs.

[0048] In this embodiment, as Figure 1As shown, a discharge pipe 400 is installed on the casing 1. One end of the discharge pipe 400 is simultaneously communicated with a plurality of negative pressure pipes 200, and the other end is installed with a cyclone separation tower 500 for discharging waste. The waste in the negative pressure pipe 200 can enter the discharge pipe 400 and finally reach the inside of the cyclone separation tower 500 for centralized discharge; the staff can place a waste bucket at the lower opening of the cyclone separation tower for collecting and transporting waste.

[0049] It should be known that during the powder spraying process, some powder materials will accumulate at the bottom of the bin because they are not collected by the recovery component 2 in time, which will affect the powder spraying environment; if manual cleaning is directly carried out, it may damage the machine.

[0050] Therefore, in some embodiments of the present application, as Figure 1 shown, filter screens 600 are provided at the bottoms of both the powder bin 12 and the working bin 11. A waste bin is provided at the bottom of the filter screen 600, and the waste bin is communicated with the discharge pipe 400. The powder sprayed by the spray gun can directly fall onto the filter screen 600, and then enter the waste bin through the gaps of the filter screen 600 for collection. The waste in the waste bin will be transported into the discharge pipe 400 under the action of the fan for centralized discharge, thus avoiding the long-term accumulation of waste in the waste bin.

[0051] The above describes the basic principle, main features and advantages of the present application. Those skilled in the art of this industry should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A powder spraying device with a powder recycling function, comprising a machine shell (1), characterized in that, At least two powder bins (100) are installed on the casing (1). A working chamber (11) for powder spraying and a powder bin (12) for placing the powder bins (100) are arranged on the casing (1); at least one feeding pipe (101) is connected to the powder bin (100), and at least one recovery component (2) for recovering powder is installed in the working chamber (11); the recovery component (2) includes a negative pressure barrel (21), a negative pressure member (22) and a collection barrel (23). The negative pressure barrel (21) is installed on the upper part of the collection barrel (23) and is communicated with the collection barrel (23). The negative pressure member (22) is fixedly connected to the negative pressure barrel (21). One end of the negative pressure member (22) passes through the negative pressure barrel (21) and extends into the collection barrel (23), and the other end is communicated with a negative pressure pipe (200) through an adapter (3). The negative pressure pipe (200) is communicated with the suction end of a fan to form a negative pressure in the negative pressure barrel (21); a gland (210) for covering the collection barrel (23) is arranged at the lower part of the negative pressure barrel (21).

2. The powder spraying device with a powder recovery function according to claim 1, wherein A spray gun is connected to the feeding pipe (101), and a collection port (211) communicated with the outside is arranged on the negative pressure barrel (21). The position of the spray gun corresponds to that of the collection port (211).

3. The powder spraying device with a powder recovery function according to claim 2, wherein, A collection bin (212) is installed on the collection port (211). The opening size of the collection bin (212) is larger than that of the collection port (211).

4. The powder spraying device with a powder recovery function according to claim 1, characterized in that, The adapter (3) is bent into an arc shape by itself. One end of the adapter (3) is provided with an installation port (31), and the other end is connected with an installation part (32). The installation port (31) is communicated with the negative pressure member (22), and the negative pressure pipe (200) is installed at the upper end of the installation part (32).

5. The powder spraying device with a powder recycling function according to claim 4, characterized in that, The adapter (3) is communicated with the middle section of the installation part (32). A detachable cover (320) is installed at the bottom of the installation part (32). The cover (320) is used to cooperate with the installation part (32) to collect waste in the negative pressure pipe (200).

6. The powder spraying device with a powder recycling function according to claim 1, characterized in that A cylinder (300) is installed on the casing (1). The telescopic rod of the cylinder (300) is fixedly connected to the negative pressure pipe. The cylinder (300) is used to drive the negative pressure pipe (200) to synchronously drive the gland (210) to press against or disengage from the collection barrel (23).

7. The powder spraying device with a powder recycling function according to claim 1, characterized in that, The number of the powder bins (100) is two. The two powder bins (12) are respectively arranged on both sides of the working chamber (11). The number of the recovery components (2) is four.

8. The powder spraying device with a powder recovery function according to claim 1, wherein, The distance that the negative pressure barrel (21) extends into the collection barrel (23) ranges from 2 cm to 10 cm.

9. The powder spraying device with a powder recycling function according to claim 1, characterized in that, A discharge pipe (400) is further installed on the casing (1). One end of the discharge pipe (400) is communicated with a plurality of negative pressure pipes (200) at the same time, and the other end is installed with a cyclone separation tower for discharging waste.

10. The powder spraying device with a powder recycling function according to claim 9, characterized in that, A filter screen (600) is provided at the bottom of both the powder bin (12) and the working bin (11). A waste bin is installed below the filter screen (600), and the waste bin is communicated with the discharge pipe (400) for transferring the waste in the waste bin to the discharge pipe (400).

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