Waste collecting structure of powder spraying device

Abstract

The waste collecting structure of the powder spraying device comprises a machine shell and a draught fan, a working bin used for spraying powder is arranged in the machine shell, a collecting assembly and a waste concentrating bin are arranged on the machine shell, the collecting assembly comprises a collecting bin and an air exhaust air channel, and the collecting bin and the air exhaust air channel are communicated; the air exhaust duct is communicated with the waste collecting bin, and the waste collecting bin is communicated with an air suction opening of the fan and used for forming negative pressure in the air exhaust duct. The powder spraying device has the advantages that the collecting bin can collect waste generated in the powder spraying process, then the waste in the collecting bin is transferred into the cyclone separation tower to be discharged in a concentrated mode under the negative pressure condition formed by the draught fan, and the situation that powder is accumulated in the working bin and influences the environment and follow-up powder spraying work is avoided. The waste collecting device effectively reduces carrying cost of waste and has the advantages of being simple in structure, high in collecting efficiency and the like.

Description

Technical Field

[0001] This application relates to the field of spraying equipment technology, and in particular to a waste collection structure for a powder spraying device. Background Technology

[0002] Powder coating equipment is used to spray powder onto the surface of products. Its principle is to use electrostatic action to spray and fix powder onto the product surface, thereby improving the product's wear resistance and corrosion resistance through the powder coating. Current powder coating equipment typically uses a spray gun to directly spray powder onto the product surface. During the spraying process, some powder may deviate from the product and accumulate in the working chamber under gravity, forming waste. If this waste is not cleaned in time, it will affect the subsequent processing environment.

[0003] To prevent waste from accumulating inside the powder coating unit, a waste collection structure is typically installed. Current waste collection structures involve installing a collection bin at the bottom of the working chamber to collect scattered waste. However, the collection bin has limited capacity, requiring frequent cleaning and replacement by operators, which increases the difficulty of waste collection and transportation. Therefore, there is an urgent need for a waste collection structure for powder coating units that is easy to operate and has high collection efficiency. Utility Model Content

[0004] One objective of this application is to provide a waste collection structure for a powder spraying device that can solve at least one of the defects in the aforementioned background art.

[0005] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: a waste collection structure for a powder spraying device, comprising a housing and a fan, wherein a working chamber for performing the powder spraying process is provided inside the housing, and a collection component and a waste collection chamber are provided on the housing, wherein the collection component includes a collection chamber and an exhaust duct, and the two are connected; the exhaust duct is connected to the waste collection chamber, and the waste collection chamber is connected to the air intake of the fan, for creating a negative pressure in the exhaust duct.

[0006] With the above setup, the waste in the working chamber can be initially collected in the collection chamber, and then the powder in the collection chamber is carried by the airflow into the waste collection chamber under the action of the fan; the transfer of waste can be completed without manual cleaning, avoiding the long-term accumulation of waste in the collection chamber and affecting the powder spraying work.

[0007] Preferably, the collection bin is located below the working bin, and the waste collection bin is located above the working bin. This arrangement allows the powder in the working bin to directly enter the collection bin under gravity.

[0008] Preferably, there are multiple collection chambers, each shaped like a bucket (wider at the top and narrower at the bottom), with its bottom connected to the exhaust duct. This design allows waste to slide down the inner wall of the collection chamber into the exhaust duct, preventing waste accumulation. When the number of collection chambers is increased, the inclination of the chamber surfaces can be further increased within a fixed space, thereby improving the waste flow rate.

[0009] Preferably, a filter assembly is installed between the collection chamber and the working chamber. This arrangement prevents larger particles from entering the working chamber, thereby reducing the risk of the exhaust duct becoming clogged.

[0010] Preferably, the filtering component is a filter screen, which is installed at the opening of the collection chamber and forms the bottom wall of the working chamber. This arrangement maximizes the effective area of ​​the filter screen and prevents waste from remaining in the dead corners of the machine.

[0011] Preferably, the filter holes on the filter screen are rectangular. This design minimizes the area occupied by the connecting ribs of the filter screen, further improving the flow efficiency of waste material on the filter screen.

[0012] Preferably, the working chamber is divided into at least one powder spraying chamber and at least one powder material chamber by a partition. This arrangement allows for the division of the layout within the working chamber, preventing waste from accumulating excessively in the same area and thus reducing the waste collection speed of the device.

[0013] Preferably, a cover plate is provided above the waste collection bin to seal it. This arrangement prevents waste from spreading from the waste collection bin to the outside.

[0014] Preferably, the waste collection structure further includes a discharge pipe and a cyclone separator. One end of the discharge pipe extends into the cover plate and communicates with the waste collection bin, while the other end is connected to the cyclone separator. With this configuration, waste in the waste collection bin can be discharged centrally into the cyclone separator through the discharge pipe.

[0015] Preferably, the cyclone separator is provided with an installation part and a support frame for supporting the cyclone separator; the installation part is provided with an installation port for installing a blower. This configuration allows the blower to provide negative pressure to the entire waste collection structure, while the support frame raises the discharge height of the cyclone separator, ensuring that the recycling bin can be placed below the cyclone separator.

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

[0017] The collection bin in this invention can collect the waste generated during the powder spraying process. Then, the negative pressure generated by the fan is used to transfer the waste in the collection bin to the cyclone separator for centralized discharge, thus avoiding the accumulation of powder in the working bin and its impact on the environment and subsequent powder spraying work.

[0018] The bottom of the working chamber is made of a filter screen, which serves two purposes: firstly, it acts as the bottom wall of the working chamber for placing powder-coated workpieces; secondly, it prevents impurities from the surrounding environment from entering the exhaust duct and causing blockages. This invention eliminates the need for manual waste removal, effectively reducing waste handling costs, and has advantages such as simple structure and high collection efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this application. Figure 1 .

[0020] Figure 2 This is a schematic diagram showing the conductive state of the collection bin and the waste collection bin in this application.

[0021] Figure 3 This is a schematic diagram of the installation structure of the collection chamber and the exhaust duct in this application.

[0022] Figure 4 This is a schematic diagram of the overall structure in this application. Figure 2 .

[0023] Figure 5 for Figure 4 A magnified structural diagram of part A in the middle.

[0024] In the diagram: 1. Casing; 11. Working chamber; 12. Waste collection chamber; 100. Filter screen; 111. Powder spraying chamber; 112. Powder silo; 2. Collection assembly; 21. Collection chamber; 22. Exhaust duct; 200. Cover plate; 3. Cyclone separator tower; 31. Installation section; 32. Support frame; 300. Discharge pipe; 310. Installation port. Detailed Implementation

[0025] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. They should not be construed as limiting the specific protection scope of this application.

[0027] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0028] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this 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 is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0029] One aspect of this application provides a waste collection structure for a powder spraying device, such as Figure 1 , Figure 2 and Figure 3 As shown, one preferred embodiment includes a housing 1 and a fan (not shown). The housing 1 has a working chamber 11 for powder coating. A collection assembly 2 and a waste collection chamber 12 are mounted on the housing 1 to collect waste from the working chamber 11. The collection assembly 2 includes a collection chamber 21 and an exhaust duct 22, which are connected. The exhaust duct 22 is connected to the waste collection chamber 12, and the waste collection chamber 12 is connected to the fan's air intake, so that negative pressure is created within the exhaust duct 22 by the fan's suction.

[0030] Understandably, during the powder spraying process, the waste in the working chamber 11 can enter the collection chamber 21 for initial collection. Subsequently, under negative pressure, the waste in the collection chamber 21 is transported to the waste collection room through an exhaust pipe, thus preventing the waste from accumulating in the collection chamber 21 for a long time and affecting its collection efficiency. This waste collection structure reduces the frequency of manual cleaning through automatic adsorption and transportation of waste, making waste collection and transfer more convenient.

[0031] Specifically, such as Figure 2As shown, the collection bin 21 is located below the working bin 11 so that the waste in the working bin 11 can directly enter the collection bin 21 under the action of gravity; the waste collection bin 12 is located above the working bin 11 so as to cooperate with other parts of the powder spraying device. For example, the waste collection bin 21 is connected to the powder recycling mechanism so that some of the waste in the powder recycling mechanism and the waste in the collection bin 21 can be collected and processed.

[0032] It should be understood that, given the overall size of the powder spraying device, the height occupied by the collection bin 21 is limited. In order to improve the collection efficiency of the collection bin 21, the bin surface of the collection bin 21 is mostly inclined. Therefore, when the opening area of ​​the collection bin 21 is large and the height is low, the inclination angle of the bin surface of the collection bin 21 can only be reduced, which will seriously affect the flow efficiency of waste in the collection bin 21.

[0033] To address the aforementioned problems, in some embodiments of this application, such as Figure 2 As shown, there are multiple collection chambers 21. Each collection chamber 21 is shaped like a bucket, wider at the top and narrower at the bottom, with its bottom directly connected to the exhaust duct. Waste entering the collection chamber 21 can slide down its sloping inner wall into the exhaust duct 22, preventing waste from accumulating within the chamber. Furthermore, when the number of collection chambers 21 is increased, the slope of the chamber surfaces can be further increased within a fixed space, thereby improving the waste flow rate.

[0034] In addition, considering the size of the connection point between the collection chamber 21 and the exhaust duct 22, in order to avoid a large amount of powder accumulating at this connection point in a short period of time and causing a blockage-like effect, the tilt angle of the collection chamber 21 in this application is set to 30° to 60°.

[0035] In this embodiment, in order to prevent other substances (especially large particles) in the working chamber 11 from entering the waste chamber and causing blockage of the exhaust duct 22, a filter assembly is installed between the collection chamber 21 and the working chamber 11 to isolate other substances.

[0036] Specifically, such as Figure 4 and Figure 5 As shown, the filter assembly is a filter screen 100. The filter screen 100 is installed at the upper opening of the collection assembly 2. The filter screen 100 can be used to form the bottom wall of the working chamber 11. On the one hand, the workpieces in the working chamber 11 are placed on the filter screen 100 to reduce the overall material consumption of the powder spraying device. On the other hand, the effective area of ​​the filter screen 100 can be maximized to avoid waste material remaining in the dead corners of the machine.

[0037] It should be noted that in some other embodiments of this application, the filter 100 may also be set at the connection point between the collection chamber 21 and the exhaust duct 22. However, since the size of the connection point is small, if the filter 100 isolates too much material, it may have a significant impact on the flow efficiency of waste.

[0038] Furthermore, the shape of the filter holes on the filter screen 100 can be rectangular, circular, elliptical, hexagonal, etc., and those skilled in the art can choose the specific shape of the filter holes according to actual needs. In this embodiment, as shown... Figure 5 As shown, the shape of the filter holes is set to rectangle to reduce the area occupied by the connecting ribs of the filter screen 100 and further improve the flow efficiency of waste on the filter screen 100.

[0039] In this embodiment, as Figure 4 As shown, the working chamber 11 is divided into a powder spraying chamber 111 and two powder storage chambers 112 by a partition. The powder spraying chamber 111 can be used as the site for the powder spraying process, while the powder storage chambers 112 can be used as the site for storing powder containers. In this way, the layout within the working chamber 11 can be divided to avoid waste from accumulating too much in the same area, which would reduce the machine's waste collection speed.

[0040] In this embodiment, as Figure 1 and Figure 4 As shown, a cover plate 200 is provided above the waste collection bin 12 to seal the waste collection bin 12 and prevent the waste inside the waste collection bin 12 from falling to the outside.

[0041] Furthermore, such as Figure 1 As shown, the waste collection structure also includes a discharge pipe 300 and a cyclone separator 3. One end of the discharge pipe 300 extends into the cover plate 200 and is connected to the waste collection bin 12, while the other end is connected to the cyclone separator 3, so that the waste in the waste collection bin 12 can enter the cyclone separator 3 through the discharge pipe 300 for centralized discharge.

[0042] Furthermore, such as Figure 1 As shown, the cyclone separator 3 is equipped with an installation part 31 and a support frame 32 for supporting the cyclone separator 3. The installation part 31 is provided with an installation port 310 for installing a blower. When the blower is running, it can create a negative pressure condition in the entire waste collection structure, thereby transferring the waste in the working chamber 11 to the cyclone separator 3. The support frame 32 can raise the discharge height of the cyclone separator 3, ensuring that the recycling bin can be placed below the cyclone separator 3.

[0043] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A waste collection structure for a powder spraying device, comprising a housing (1) and a fan, wherein the housing (1) contains a working chamber (11) for performing the powder spraying process, characterized in that, The casing (1) is provided with a collection component (2) and a waste collection bin (12). The collection component (2) includes a collection bin (21) and an exhaust duct (22), which are connected to each other. The exhaust duct (22) is connected to the waste collection bin (12), and the waste collection bin (12) is connected to the air intake of the fan, which is used to form a negative pressure in the exhaust duct (22).

2. The waste collection structure of the powder spraying device as described in claim 1, characterized in that, The collection bin (21) is located below the working bin (11), and the waste collection bin (12) is located above the working bin (11).

3. The waste collection structure of the powder spraying device as described in claim 2, characterized in that, There are multiple collection chambers (21), each collection chamber (21) is shaped like a bucket with a larger top and a smaller bottom, and the bottom of each collection chamber (21) is connected to the exhaust duct (22).

4. The waste collection structure of the powder spraying device as described in claim 3, characterized in that, A filter assembly is installed between the collection chamber (21) and the working chamber (11).

5. The waste collection structure of the powder spraying device as described in claim 4, characterized in that, The filtering component is a filter screen (100), which is installed at the opening of the collection chamber (21) and forms the bottom wall of the working chamber (11).

6. The waste collection structure of the powder spraying device as described in claim 5, characterized in that, The filter holes on the filter screen (100) are rectangular in shape.

7. The waste collection structure of the powder spraying device as described in claim 1, characterized in that, The working chamber (11) is divided into at least one powder spraying chamber (111) and at least one powder hopper (112) by a partition.

8. The waste collection structure of the powder spraying device as described in claim 1, characterized in that, A cover plate (200) is provided above the waste collection bin (12), and the cover plate (200) is used to seal the waste collection bin (12).

9. The waste collection structure of the powder spraying device as described in claim 8, characterized in that, The waste collection structure also includes a discharge pipe (300) and a cyclone separator (3). One end of the discharge pipe (300) extends into the cover plate (200) and is connected to the waste collection bin (12), and the other end is connected to the cyclone separator (3).

10. The waste collection structure of the powder spraying device as described in claim 9, characterized in that, The cyclone separator (3) is provided with an installation part (31) and a support frame (32) for supporting the cyclone separator (3); the installation part is provided with an installation port (310) for installing a fan.

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