High-efficiency coating dynamic and static pressure chamber

Abstract

The utility model relates to an efficient coating dynamic and static pressure chamber which comprises a base, a shell fixed to the upper end of the base, a flow equalizing mechanism installed in the shell, a fan installed on the side face of the shell and a controller fixed to the side face of the shell. By means of the specially related flow equalizing mechanism, fluid momentum in a high-speed area can be transmitted to a low-speed area through a hole or a flow guide structure, a more uniform velocity field is formed by mixing high-speed jet flow with surrounding low-speed fluid, airflow entering the shell is more uniform, meanwhile, part of airflow is led out from the flow equalizing mechanism, and the flow equalizing efficiency is improved. And low-pressure areas are formed on the two sides of the base, so that internal air is sucked, the air moves towards the two sides, the number of paint repeatedly falling onto a workpiece during paint spraying is reduced, and the paint spraying uniformity is improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial spraying, and in particular to a high-efficiency coating dynamic and static pressure chamber. Background Technology

[0002] In industrial coating processes, dynamic and static pressure chambers are widely used as core equipment in surface treatment in industries such as automobiles, machinery manufacturing, and furniture. Traditional coating dynamic and static pressure chambers typically employ a simple direct-blowing fan structure, generating airflow through a single air inlet to sweep or assist in painting the workpiece surface. However, this type of structure has significant drawbacks: First, the airflow distribution within the chamber is uneven, with significant differences between high-speed and low-speed areas, resulting in a large wind speed gradient on the workpiece surface and affecting coating uniformity. Second, paint mist easily forms eddies under static pressure differences, and some paint is re-deposited on the workpiece surface after airflow circulation, causing uneven coating thickness and material waste. In existing technologies, some improved dynamic and static pressure chambers attempt to improve airflow distribution by adding guide plates or perforated plates, but the following problems still exist: When painting the workpiece surface, a large amount of paint flies into the air, and the existing dynamic and static pressure chamber airflow causes the paint to re-deposit on the workpiece surface, resulting in uneven coating thickness. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model aims to provide a high-efficiency coating dynamic and static pressure chamber, solving the problems existing in the prior art. The conical hole array of the first flow equalization plate utilizes the momentum exchange between the high-speed jet and the low-speed region to form a uniform velocity field. The pressure difference formed by the high-speed airflow drawn from the high-pressure box on both sides of the outer shell forces the airflow to move to both sides. Thus, the internal airflow is from top to bottom and moves to both sides. Because the workpiece is basically located in the middle of the dynamic and static pressure chamber during spraying, the amount of spray that drifts in the air and falls back onto the workpiece can be reduced. Furthermore, the high-pressure box diverts the airflow, and the greater the airflow into the dynamic and static pressure chamber, the faster the airflow velocity on both sides of the outer shell, resulting in a lower pressure at the bottom and forcing the airflow velocity to increase. The bottom air extraction and top air filling make the airflow in the dynamic and static pressure chamber more stable.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency coating dynamic and static pressure chamber, comprising a base, an outer shell fixed to the upper end of the base, a flow equalization mechanism installed inside the outer shell, a fan installed on the side of the outer shell, and a controller fixed on the side of the outer shell;

[0007] The flow equalization mechanism includes a high-voltage box fixed to the upper end of the outer casing, a bracket fixed inside the outer casing, a flow equalization box fixed to the upper end of the bracket, and a first flow equalization plate fixed to the upper end of the flow equalization box.

[0008] Preferably, the outer casing includes a housing fixed to the upper end of the base, a partition fixed to the inner side of the housing, and an air guide plate fixed to the upper end of the partition.

[0009] Preferably, the base includes a baffle, a load-bearing frame fixed to the side of the baffle, a load-bearing plate fixed to the upper end of the load-bearing frame, a ventilation plate fixed to the upper end of the load-bearing plate, and a guide plate fixed to the side of the ventilation plate.

[0010] Preferably, the high-voltage box has a hollow internal structure, a flow diversion port on the side, and a second flow equalization plate in the middle of the high-voltage box.

[0011] Preferably, the first flow equalization plate has tapered holes uniformly arranged inside.

[0012] Preferably, the guide plate has through holes evenly distributed on its horizontal surface.

[0013] (III) Beneficial Effects

[0014] The purpose of this invention is to provide a high-efficiency coating dynamic and static pressure chamber. This device uses a first flow equalization plate with a conical array of holes to exchange momentum between a high-speed jet and a low-speed region, creating a uniform velocity field. A second flow equalization plate further homogenizes the airflow within the high-pressure chamber, significantly reducing the indoor wind speed gradient. The high-speed airflow from the high-pressure chamber's branch outlet creates a pressure difference on both sides of the outer shell, forcing the bottom airflow to move to both sides and be quickly discharged, reducing the probability of paint mist falling back onto the workpiece surface and avoiding uneven coating thickness. The greater the airflow entering the dynamic and static pressure chamber, the faster the airflow velocity on both sides, and the lower the bottom pressure, enhancing the suction effect. This effect makes flow rate adjustment within the dynamic and static pressure chamber simpler and more convenient, while greatly improving spraying efficiency. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the flow equalization mechanism in this utility model.

[0017] Figure 3 This is a schematic diagram of the flow equalization mechanism in this utility model.

[0018] Figure 4 This is a schematic diagram of the outer shell of this utility model.

[0019] Figure 5 This is a schematic diagram of the base in this utility model.

[0020] Figure 6 This is a schematic diagram of the base in this utility model.

[0021] Figure 7 This is a bottom view of the high-voltage box in this utility model.

[0022] Figure 8 This is a schematic diagram of the interior of the first flow equalization plate in this utility model.

[0023] Figure 9 This is a schematic diagram of the guide plate in this utility model.

[0024] In the diagram: 1-base, 101-baffle, 102-support frame, 103-support plate, 104-ventilation plate, 105-guide plate, 1051-through hole, 2-outer shell, 201-shell, 202-partition, 203-guide plate, 3-flow equalization mechanism, 301-high pressure box, 3011-diverter port, 3012-second flow equalization plate, 302-bracket, 303-flow equalization box, 304-first flow equalization plate, 3041-conical hole, 4-fan, 5-controller. Detailed Implementation

[0025] The following will refer to the appendix in the example of this utility model. Figure 1 -Appendix Figure 9 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figure 1 As shown, this utility model provides a technical solution: a high-efficiency coating dynamic and static pressure chamber, including a base 1, a shell 2 fixed to the upper end of the base 1, a flow equalization mechanism 3 installed inside the shell 2, a fan 4 installed on the side of the shell 1, and a controller 5 fixed on the side of the shell 2. The base 1 serves to support the dynamic and static pressure chamber above and mainly generates low pressure, allowing air inside the dynamic and static pressure chamber to be drawn out from the base 1. The shell 2 serves to isolate the external environment and constrain the airflow direction, ensuring that the airflow follows the designed path and reducing external interference. The flow equalization mechanism 3 is used to average the wind pressure and wind speed gradient, ensuring that the air entering the dynamic and static pressure chamber is sufficiently uniform. The fan 4 is installed on the side of the shell, providing a power source for the dynamic and static pressure chamber, causing air to flow within the chamber. This propels the airflow, forming a stable airflow, providing the necessary conditions for paint spraying and workpiece surface cleaning, ensuring the smooth progress of the coating process. The controller 5 is used to control the speed of the fan 4, thereby controlling the airflow velocity inside the dynamic and static pressure chamber.

[0027] like Figure 2 and Figure 3As shown, the flow equalization mechanism 3 includes a high-pressure box 301 fixed to the upper end of the outer shell 2, a support 302 fixed inside the outer shell 2, a flow equalization box 303 fixed to the upper end of the support, and a first flow equalization plate 304 fixed to the upper end of the flow equalization box 303. The high-pressure box 301 has a hollow internal structure for storing and distributing airflow. This makes the airflow entering the dynamic and static pressure chamber more uniform and stable. By drawing out part of the airflow to form a pressure difference, it forces the bottom airflow to move to both sides, reducing the probability of paint mist falling back onto the workpiece surface and improving the uniformity of spraying. The support 302 is fixed inside the outer shell 2, supporting the flow equalization box 303 and the first flow equalization plate 304, ensuring their stable position in the dynamic and static pressure chamber. This ensures the stability and reliability of the flow equalization mechanism 3, allowing the flow equalization box 303 and the first flow equalization plate 304 to function normally and maintain a uniform distribution of airflow. The flow equalization box 303 performs preliminary buffering and distribution of the airflow from the high-pressure box 301, making the airflow flow more evenly to the first flow equalization plate 304. This helps improve airflow uniformity, providing conditions for the first flow equalization plate 304 to function better and further optimizing airflow distribution. The first flow equalization plate 304 has uniformly arranged tapered holes 3041, utilizing momentum exchange between the high-speed jet and the low-speed region to transfer fluid momentum from the high-speed region to the low-speed region, forming a more uniform velocity field. This makes the airflow entering the housing 2 more uniform, significantly reducing the indoor wind speed gradient and improving coating uniformity.

[0028] like Figure 4 As shown, the outer casing 2 includes a housing 201 fixed to the upper end of the base 1, a partition 202 fixed to the inner side of the housing 201, and a guide plate 203 fixed to the upper end of the partition 202. The housing 201 serves as the external frame of the dynamic and static pressure chamber, fixing and protecting the internal partition 202, guide plate 203, and flow equalization mechanism 3, while restricting airflow within a certain space. The partition 202 divides the interior of the housing into different areas, allowing high-speed airflow to pass through the partition 202 and exit from both sides of the bottom, thus forming a low-pressure area. This creates a suction effect on the air at the bottom, resulting in a low-pressure area and smoother airflow within the dynamic and static pressure chamber. The guide plate 203 introduces the high-pressure box 301 into the side of the partition 202, where it flows out, thus forming a low-pressure area.

[0029] like Figure 5 and Figure 6As shown, the base 1 includes a baffle 101, a load-bearing frame 102 fixed to the side of the baffle 101, a load-bearing plate 103 fixed to the upper end of the load-bearing frame 102, a ventilation plate 104 fixed to the upper end of the load-bearing plate 103, and a guide plate 105 fixed to the side of the ventilation plate 104. The baffle 101 is located on the side of the base and serves to block and protect, restricting airflow from entering from the side of the base 1, thereby reducing the low-pressure effect. The load-bearing frame 102 connects the baffle 101 and the load-bearing plate 103, providing a support structure for the entire dynamic and static pressure chamber and bearing the weight of the outer shell and internal equipment. The load-bearing plate 103, containing the workpieces and other components within the dynamic and static pressure chamber, is the main component bearing the weight. The ventilation plate 104 allows an airflow slightly greater than the maximum flow rate of the flow equalization mechanism 3, promoting air circulation, preventing air accumulation at the bottom, and making the airflow more uniform and smooth. The guide plate 105 has evenly distributed through holes 1051 on its horizontal surface, guiding the airflow from the flow equalization mechanism 3 and flowing out through the channels on both sides of the outer casing 2 to move to both sides, while simultaneously creating a low-pressure zone on both sides of the base 1. This creates a suction effect, forcing the internal air to move to both sides and be quickly discharged as it flows downwards. The guide plate 105 does not contact the ground, leaving gaps to extract air from the bottom, creating a low-pressure zone at the bottom.

[0030] like Figure 7 As shown, the high-pressure box 301 has a hollow structure inside and a diversion port 3011 is provided on the side. A second flow equalization plate 3012 is provided in the middle of the high-pressure box 301. The diversion port 3011 allows some air to flow into the side of the partition 202, thereby forming a low-pressure area at the bottom. The second flow equalization plate 3012 in the middle of the interior initially equalizes the airflow.

[0031] like Figure 8 As shown, tapered holes 3041 are uniformly arranged within the first flow equalization plate 304. The uniform arrangement of these tapered holes 3041 allows for the transfer of fluid momentum from the high-speed jet to the low-speed region through momentum exchange between the high-speed jet and the low-speed region, thus creating a more uniform velocity field. The airflow is accelerated by reducing the cross-sectional area, thereby suppressing turbulence generation.

[0032] like Figure 9 As shown, through holes 1051 are uniformly arranged on the horizontal surface of the guide plate 105; the presence of through holes 1051 allows the guide plate 105 to form a low-pressure area on the horizontal surface, and then draw in the air below through the through holes 1051, thereby forming a low-pressure area at the bottom.

[0033] Working principle:

[0034] After the fan 4 draws air into the high-pressure box 301, part of the air in the high-pressure box 301 enters the dynamic and static pressure chamber after being equalized by the second flow equalization plate 3012 and the first flow equalization plate 304. The other part enters the space between the partition plate 202 and the shell 201 through the diversion port 3011 on the side of the high-pressure box 301. Because the cross-sectional area of ​​this space is smaller than that of the dynamic and static pressure chamber, the airflow velocity is faster. After being deflected by the guide plate 105, the airflow flows out from the side of the base 1. At this time, the airflow velocity on the side of the base 1 is faster, and the air in the base will be drawn outward to form a low-pressure area. The pressure on both sides is lower, so the air in the dynamic and static pressure chamber moves to both sides while flowing downward.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency coating dynamic and static pressure chamber, characterized in that, Includes a base (1), a housing (2) fixed to the upper end of the base (1), a flow equalization mechanism (3) installed inside the housing (2), a fan (4) installed on the side of the housing (2), and a controller (5) fixed on the side of the housing (2). The flow equalization mechanism (3) includes a high-voltage box (301) fixed to the upper end of the outer shell (2), a bracket (302) fixed inside the outer shell (2), a flow equalization box (303) fixed to the upper end of the bracket, and a first flow equalization plate (304) fixed to the upper end of the flow equalization box (303).

2. The high-efficiency coating dynamic and static pressure chamber according to claim 1, characterized in that, The outer shell (2) includes a shell (201) fixed to the upper end of the base (1), a partition (202) fixed to the inner side of the shell (201), and a guide plate (203) fixed to the upper end of the partition (202).

3. The high-efficiency coating dynamic and static pressure chamber according to claim 1, characterized in that, The base (1) includes a baffle (101), a load-bearing frame (102) fixed to the side of the baffle (101), a load-bearing plate (103) fixed to the upper end of the load-bearing frame (102), a ventilation plate (104) fixed to the upper end of the load-bearing plate (103), and a guide plate (105) fixed to the side of the ventilation plate (104).

4. The high-efficiency coating dynamic and static pressure chamber according to claim 1, characterized in that, The high-voltage box (301) has a hollow structure inside and a flow divider (3011) is provided on the side. A second flow equalization plate (3012) is provided in the middle of the high-voltage box (301).

5. The high-efficiency coating dynamic and static pressure chamber according to claim 1, characterized in that, The first flow equalization plate (304) is uniformly provided with conical holes (3041).

6. The high-efficiency coating dynamic and static pressure chamber according to claim 3, characterized in that, The guide plate (105) has through holes (1051) evenly arranged on its horizontal surface.

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