Closed clean powder spraying room
By introducing a closed design and a multi-chamber filtration system into the powder coating booth, the problem of dust leakage was solved, and air circulation filtration and micro-positive pressure control were achieved, improving the cleanliness of the coating environment and the quality of the workpiece.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIUZHOU YISHAN ENVIRONMENTAL PROTECTION EQUIP CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-05-26
AI Technical Summary
Existing powder spraying booths suffer from dust leakage during the spraying process, leading to environmental pollution, and lack effective dust filtration structures.
A closed clean powder spraying chamber was designed, comprising a closed chamber body and multiple chambers, equipped with an ultra-precision filter element, a high-efficiency filter layer and a circulating fan, to achieve air circulation filtration and micro-positive pressure control, ensuring that dust does not leak out.
It effectively reduces dust pollution, improves the air quality of the spraying environment, ensures the quality of the sprayed workpieces, and facilitates dust cleaning, creating a clean working environment.
Smart Images
Figure CN224271722U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spraying equipment technology, and in particular to a closed clean powder spraying room. Background Technology
[0002] The powder coating booth is one of the main pieces of equipment in electrostatic powder coating, primarily used for powder coating of workpieces. It provides stable airflow, maintains a clean working environment, and controls the dust content within the booth, typically below the explosion limit (generally 10 g / m³). 3 The design of the powder coating booth should facilitate cleaning, reduce powder deposition, and provide sufficient light for coating operations. The booth should ensure stable airflow to achieve a uniform coating effect on the workpiece. The airflow composition within the booth should be rational, allowing for convenient and quick recovery and color changes, and it should also have an attractive appearance, facilitating cleaning and maintenance.
[0003] The existing technical solutions mentioned above have the following drawbacks: the powder coating booths used in the current powder coating industry are all open and do not have a good dust filtration structure. During the powder coating operation, dust leaks out and causes pollution to the surrounding environment. Utility Model Content
[0004] The purpose of this invention is to provide a closed clean powder spraying room.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A closed clean powder spraying room includes a closed room body, with a powder spraying chamber located at the center inside the closed room body. The closed room body has a first chamber, a second chamber, a third chamber, and a fourth chamber. A first ultra-precision filter element is fixedly connected inside the first chamber. A second ultra-precision filter element is fixedly connected inside the second chamber. A high-efficiency filter layer is fixedly connected inside the third chamber. A circulating fan is fixedly connected inside the third chamber.
[0007] By adopting the above technical solution, multiple chambers are added internally to work in conjunction with the powder spraying chamber. Different equipment is installed inside different chambers to draw out the air from the powder spraying chamber and filter it through the filter element. The dust filtered by the filter element will fall to the bottom of the chamber for easy cleaning later. The clean air is then discharged back into the powder spraying chamber, forming an air circulation process. The circulating fan drives the air inside the chamber, causing the air between the chambers to circulate.
[0008] Furthermore, a makeup air fan is fixedly connected to the outside of the enclosed chamber, a control cabinet is fixedly connected to the bottom of the second chamber, a wind pressure detector is fixedly connected to one side of the second chamber, and a makeup air chamber is opened inside the enclosed chamber on the outside of the powder spraying room.
[0009] By adopting the above technical solution, the wind pressure detector detects the internal wind pressure. It is necessary to ensure that the closed clean powder spraying room is under a slight positive pressure. The wind pressure detection signal is sent to the control cabinet to control the frequency conversion operation of the makeup air fan, so as to ensure that the pressure inside the closed clean powder spraying room meets the set value.
[0010] Furthermore, the powder spraying chamber, the first chamber, the second chamber, the third chamber, and the air supply chamber are interconnected, and two of each of the first chamber, the second chamber, the third chamber, the first ultra-precision filter element, the second ultra-precision filter element, the high-efficiency filter layer, the circulating fan, and the air pressure detector are symmetrically arranged.
[0011] By adopting the above technical solution and through a symmetrical structural design, air circulation can be ensured throughout the entire chamber, while improving filtration efficiency.
[0012] Furthermore, the high-efficiency filter layer is installed at the connection between the third chamber and the fourth chamber, and the air outlet of the make-up air fan is connected to the make-up air chamber.
[0013] By adopting the above technical solution, air filtration and purification are achieved through a high-efficiency filter layer.
[0014] Furthermore, the outer side of the enclosed chamber has a pre-reserved inlet for the powder-coated workpiece and a door panel for sealing the inlet. The door panel is rotatably connected to the enclosed chamber via hinges.
[0015] By adopting the above technical solutions, the normal entry and exit of workpieces can be guaranteed.
[0016] In summary, the beneficial technical effects of this utility model are as follows:
[0017] It adopts a closed chamber, cavity, ultra-precision filter element, high-efficiency filter layer, circulating fan, makeup air fan, air pressure detector and control cabinet. After the clean air in the powder spraying room is self-circulated, it reduces the environmental pollution caused by dust compared with the existing powder spraying room. The air quality in the powder spraying room is improved, the working environment is improved, and the slightly positive pressure in the powder spraying room prevents external dust from entering the powder spraying room. The quality of the sprayed workpiece is also improved, resulting in convenient filtration and reduced pollution. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0019] In the diagram, 1. Enclosed chamber; 2. Powder spraying chamber; 3. First chamber; 4. Second chamber; 5. Third chamber; 6. Fourth chamber; 7. High-efficiency filter layer; 8. Circulating fan; 9. Make-up air fan; 10. Air pressure detector; 11. Control cabinet; 12. Make-up air chamber; 13. Second ultra-precision filter element; 14. First ultra-precision filter element. Detailed Implementation
[0020] The present invention will be further described in detail below with reference to the accompanying drawings.
[0021] Reference Figure 1 A closed clean powder coating booth includes a closed chamber 1, with a powder coating chamber 2 located at the center of the closed chamber 1. The closed chamber 1 contains a first chamber 3, a second chamber 4, a third chamber 5, and a fourth chamber 6. A first ultra-precision filter element 14 is fixedly connected inside the first chamber 3. A second ultra-precision filter element 13 is fixedly connected inside the second chamber 4. A high-efficiency filter layer 7 is fixedly connected inside the third chamber 5. A circulating fan 8 is fixedly connected inside the third chamber 5. A makeup air fan 9 is fixedly connected to the outside of the closed chamber 1. A control cabinet 11 is fixedly connected to the bottom of the second chamber 4. A wind pressure detector 10 is fixedly connected to one side of the second chamber 4. A makeup air chamber 1 is located outside the powder coating chamber 2 inside the closed chamber 1. 2. Multiple internal chambers are added to work in conjunction with the powder spraying chamber 2. Different equipment is installed in different chambers to draw out the air from the powder spraying chamber 2 and filter it through the filter element. The dust filtered by the filter element will fall to the bottom of the chamber for easy cleaning later. The clean air is then discharged back into the powder spraying chamber 2 to form an air circulation system. The circulating fan 8 drives the air inside the chamber to circulate the air between the chambers. The wind pressure detector 10 detects the internal wind pressure and ensures that the closed clean powder spraying chamber 2 is under a slight positive pressure. The wind pressure detection signal is sent to the control cabinet 11 to control the frequency conversion operation of the makeup air fan 9 to ensure that the pressure inside the closed clean powder spraying chamber 2 meets the set value.
[0022] like Figure 1 As shown, the powder spraying chamber 2, the first chamber 3, the second chamber 4, the third chamber 5 and the air supply chamber 12 are interconnected. The first chamber 3, the second chamber 4, the third chamber 5, the first ultra-precision filter element 14, the second ultra-precision filter element 13, the high-efficiency filter layer 7, the circulating fan 8 and the air pressure detector 10 are symmetrically arranged in twos. The high-efficiency filter layer 7 is installed at the connection between the third chamber 5 and the fourth chamber 6. The air outlet of the air supply fan 9 is interconnected with the air supply chamber 12. The outside of the enclosed chamber 1 is reserved with an inlet for the powder spraying workpiece and a door panel is provided to block the inlet. The door panel is rotatably connected to the enclosed chamber 1 by a hinge.
[0023] The implementation principle of this embodiment is as follows: The powder spraying chamber 2 is sealed. When it starts working, under the traction of the circulating fan 8, the air in the powder spraying chamber 2 is drawn into the first ultra-precision filter element 14 and the second ultra-precision filter element 13 to filter the dust in the air. Dust particles larger than 0.1 μm are intercepted by the filter elements. The filtered air enters the fourth chamber 6, and after being filtered by the high-efficiency filter layer 7, it enters the third chamber 5 and is then discharged by the circulating fan 8 in the chamber. The discharged air is all filtered clean air, which returns to the powder spraying chamber 2. This cycle is repeated to achieve air filtration and purification, reducing the amount of dust in the powder spraying chamber 2. During normal operation, in order to prevent external dust from entering, it is necessary to ensure that the powder spraying chamber 2 is in a slightly positive pressure state. The wind pressure detector 10 sends the air pressure signal to the control cabinet 11 to control the frequency conversion operation of the make-up air fan 9 to ensure that the pressure in the powder spraying chamber 2 meets the set value.
[0024] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A closed clean powder spraying room, comprising a closed room body (1), characterized in that: The sealed chamber (1) has a powder spraying chamber (2) at its center. The sealed chamber (1) has a first chamber (3), a second chamber (4), a third chamber (5) and a fourth chamber (6). The first chamber (3) has a first ultra-precision filter element (14) fixedly connected inside. The second chamber (4) has a second ultra-precision filter element (13) fixedly connected inside. The third chamber (5) has a high-efficiency filter layer (7) fixedly connected inside. The third chamber (5) has a circulating fan (8) fixedly connected inside.
2. The enclosed clean powder spraying room according to claim 1, characterized in that: A makeup air fan (9) is fixedly connected to the outside of the enclosed room (1), a control cabinet (11) is fixedly connected to the bottom of the second chamber (4), a wind pressure detector (10) is fixedly connected to one side of the second chamber (4), and a makeup air chamber (12) is opened inside the enclosed room (1) on the outside of the powder spraying room (2).
3. The enclosed clean powder spraying room according to claim 2, characterized in that: The powder spraying chamber (2), the first chamber (3), the second chamber (4), the third chamber (5) and the air supply chamber (12) are interconnected. The first chamber (3), the second chamber (4), the third chamber (5), the first ultra-precision filter element (14), the second ultra-precision filter element (13), the high-efficiency filter layer (7), the circulating fan (8) and the wind pressure detector (10) are symmetrically arranged in twos.
4. The enclosed clean powder spraying room according to claim 2, characterized in that: The high-efficiency filter layer (7) is installed at the connection between the third chamber (5) and the fourth chamber (6), and the air outlet of the make-up air fan (9) is connected to the make-up air chamber (12).