A filter unit sink down drying chamber

Abstract

The application discloses a kind of drying chamber of filter unit sinking, belong to coating equipment technical field.The drying chamber includes chamber body side wall, is connected to its circulation air bellow, is located between vertical airflow guide channel, and distribution is in the air supply nozzle section of circulation air bellow side wall;The vertical airflow guide channel lower end is communicated to the filter frame that is concave downwards, and high-temperature filter is detachably connected in the frame with horizontal or inclined posture, and its bottom air supply end is communicated with air supply channel.Working, the airflow in channel is filtered after passing through high-temperature filter from bottom to top and is sent into air supply nozzle section.The filter frame is arranged to utilize bottom idle space in the application, and channel is arranged between side wall and air bellow, space utilization is extremely compact, so that drying room overall width can be reduced by 15%-30% compared with traditional structure.

Description

Technical Field

[0001] This invention relates to the field of coating machinery and equipment manufacturing technology, and more specifically, to a drying chamber with a sunken filter unit. Background Technology

[0002] In the painting process of automobile manufacturing and large machinery equipment, the drying chamber is the core equipment used to promote the heat curing of the paint film on the car body surface. In order to ensure the cleanliness of the hot air inside the drying chamber and prevent impurities from adhering to the undried car body paint surface, a filter device must be installed in the hot air circulation pipeline to deeply filter the circulating air.

[0003] like Figure 2 As shown, in existing drying chamber equipment, the conventional structural layout in the industry typically involves centrally installing the hot air filtration devices at a high position on the side walls of the drying chamber or in the static pressure chamber at the top. However, in actual industrial applications, this traditional high-position structural layout has the following significant structural defects: First, it occupies a large amount of factory space: the high-level side or top placement of the filter device will lead to the passive expansion of the overall width and height of the drying room, which not only consumes more structural steel, but also occupies the extremely limited vertical space of the workshop.

[0004] Secondly, high-altitude maintenance is cumbersome and poses safety hazards: when the filter needs to be replaced due to blockage caused by paint mist adsorption, maintenance workers must erect scaffolding or climb high-altitude maintenance ladders to perform the extraction operation. This type of high-altitude operation is difficult, time-consuming, and labor-intensive, and the unsteady force exerted while suspended in the air can easily cause the filter components to mechanically jam in the slide, posing a significant personal safety hazard.

[0005] Third, it can easily cause secondary pollution of the paint surface: When the old filter unit, which is full of dust and impurities, is forcibly pulled out from a higher position, the large amount of accumulated impurities are affected by mechanical vibration and are very likely to fall directly down onto the surface of the workpiece being baked on the conveyor system below, resulting in particle defects in the paint film and seriously reducing the first-time pass rate of coating quality.

[0006] In summary, developing a drying chamber that saves space, is safe and easy to maintain and operate, and can avoid the risk of secondary pollution of the paint surface from the physical space is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention discloses a drying chamber with a sunken filter unit, which solves the technical problems of existing drying chamber filter devices occupying a large space, being cumbersome to maintain, and easily causing secondary pollution of the paint surface.

[0008] To achieve the above objectives, the present invention provides a drying chamber with a sunken filter unit, comprising: The side wall of the chamber; A circulating air box is connected to the side wall of the chamber, and a vertical airflow guiding channel is located between the side wall of the chamber and the circulating air box. Air supply nozzles are distributed on the sidewalls of the circulating air box; The filter frame is recessed downwards and connected to the lower end of the vertical airflow guiding channel; A high-temperature filter, which is detachably connected to the filter frame in a horizontal or inclined manner; An air supply channel is connected to the bottom air supply end of the filter frame; In operation, the airflow in the vertical airflow guiding channel passes through the high-temperature filter from bottom to top and is then sent into the air supply nozzle section.

[0009] Preferably, the air supply nozzle section consists of a plurality of air supply nozzles, and the air velocity of the air supply nozzles is 8-12 m / s.

[0010] Preferably, the high-temperature filter is a high-temperature resistant glass fiber filter paper or a metal filter screen.

[0011] Preferably, a maintenance sealing door is provided on the side wall of the chamber corresponding to the position of the high-temperature filter.

[0012] Preferably, the filter surface of the high-temperature filter forms an angle of 0-15 degrees with the horizontal plane.

[0013] Preferably, the lateral distance of the vertical airflow guiding channel is 400-500mm.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The sunken drying chamber provided by this invention lowers the filter unit, allowing the high-temperature filter to be lowered entirely by arranging the filter frame downwards. The bottom air supply channel can directly utilize the unused space at the bottom of the drying chamber, eliminating the need for additional widening of the side air ducts. Simultaneously, by cleverly designing the vertical airflow guide channel between the chamber side wall and the circulating air box, space utilization is extremely compact, reducing the overall width of the drying chamber by 15%-30% compared to traditional structures. When the equipment is stopped, maintenance personnel can horizontally remove or install the high-temperature filter without entering the drying chamber by opening the inspection and sealing door. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a front view of the drying chamber with the filter unit of the present invention recessed. Figure 2 This is a schematic diagram of the existing drying chamber equipment structure.

[0017] In the diagram: 1. Chamber side wall; 2. Circulating air box; 3. Vertical airflow guide channel; 4. Air supply nozzle section; 5. High temperature filter. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments.

[0020] like Figure 1 As shown, the present invention provides a drying chamber with a sunken filter unit, which mainly includes a chamber side wall 1 and a circulating air box 2 connected to the chamber side wall 1. The chamber side wall 1 is arranged vertically to form the external closed base frame of the drying chamber.

[0021] The circulating air box 2 is installed on the inner side of the chamber side wall 1, forming a vertically extending cavity between the chamber side wall 1 and the circulating air box 2. This cavity serves as the vertical airflow guiding channel 3. To ensure that the vertical airflow guiding channel 3 has sufficient air delivery cross-sectional area to prevent airflow congestion and reduce system wind resistance, while avoiding excessive encroachment on the effective working space inside the drying chamber, preferably, the lateral distance of the vertical airflow guiding channel 3 (i.e., the net distance between the outer wall of the circulating air box 2 and the inner wall of the chamber side wall 1) is set to 400mm-500mm. This specific spatial spacing perfectly balances the aerodynamic performance of the equipment with the overall footprint.

[0022] Air supply nozzle sections 4 are distributed on the side wall of the circulating air box 2. Specifically, the air supply nozzle section 4 consists of several air supply nozzles arranged on the wall of the air box. In this embodiment, hot air enters this section after passing through the high-temperature filter 5, and is sprayed out by the air supply nozzles toward the working area inside the drying chamber. The designed wind speed is stable at 8-12 m / s to ensure that the paint film on the vehicle body surface is heated evenly and to promote curing.

[0023] At the lower end of the vertical airflow guiding channel 3, a downwardly recessed filter frame is connected, causing the entire filtration functional area to sink to a low position close to the ground. A high-temperature filter 5 is installed inside the filter frame. To meet the stringent air cleanliness requirements of different coating processes and to cope with the high-temperature alternating environment inside the drying chamber, preferably, the high-temperature filter 5 is made of high-temperature resistant glass fiber filter paper or metal filter mesh.

[0024] In terms of spatial arrangement, the high-temperature filter 5 is detachably supported and connected within the filter frame in a horizontal or inclined manner. To facilitate direct disassembly, inspection, and replacement of the high-temperature filter 5 by operators at a low position, a maintenance sealing door is provided on the side wall 1 of the chamber corresponding to the high-temperature filter 5. When the equipment is stopped, maintenance personnel do not need to enter the drying chamber; they can simply open the maintenance sealing door to horizontally remove or install the high-temperature filter 5.

[0025] The bottom air supply end of the filter frame is connected to an air supply channel. The air supply channel is connected to an external hot air heating and circulation power system for introducing circulating hot air to be purified.

[0026] The airflow circulation mechanism in this embodiment during operation is as follows: The circulating hot air from the bottom is first sent into the air supply channel, and then forced upwards through the high-temperature filter 5 located at the lower position for deep filtration. The purified hot air enters the vertical airflow guide channel 3 and continues to flow upwards under pressure. Finally, it is split and sent into the air supply nozzle section 4 distributed on the side wall of the circulating air box 2, and sprayed evenly onto the workpiece at a wind speed of 8-12m / s.

[0027] To optimize the aerodynamic flow field distribution and improve maintenance convenience, the filter surface of the high-temperature filter 5 is preferably arranged at an angle of 0-15 degrees to the horizontal plane. When this angle is at a slight tilt of greater than 0 degrees and not greater than 15 degrees, the windward surface of the high-temperature filter 5 can guide and buffer the incoming airflow, making the airflow more evenly distributed on the filter surface and avoiding local high wind resistance agglomeration. At the same time, this extremely small angle range perfectly matches the ergonomics of the operator pulling the filter horizontally or slightly at an angle from the side to inspect the sealed door, making ground maintenance smoother and less labor-intensive.

[0028] This article uses specific embodiments to illustrate the principles and implementation methods of the present invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A drying chamber with a submerged filter unit, characterized in that, include: (1) Side wall of the chamber; A circulating air box (2) is connected to the side wall (1) of the chamber, and a vertical airflow guiding channel (3) is located between the side wall (1) of the chamber and the circulating air box (2); Air supply nozzle section (4) is distributed on the side wall of the circulating air box (2); The filter frame is recessed downwards and connected to the lower end of the vertical airflow guiding channel (3); High temperature filter (5), the high temperature filter (5) is detachably connected to the filter frame in a horizontal or inclined position; An air supply duct is connected to the bottom air supply end of the filter frame; In the working state, the airflow in the vertical airflow guiding channel (3) passes through the high temperature filter (5) from bottom to top and is then sent into the air supply nozzle section (4).

2. The drying chamber with the filter unit recessed according to claim 1, characterized in that, The air supply nozzle section (4) consists of several air supply nozzles, and the air velocity of the air supply nozzles is 8-12 m / s.

3. The drying chamber with the filter unit sunken according to claim 2, characterized in that, The high-temperature filter (5) is a high-temperature resistant glass fiber filter paper or a metal filter screen.

4. The drying chamber with the filter unit sunken according to claim 3, characterized in that, The side wall (1) of the chamber is provided with a maintenance sealing door at the position corresponding to the high temperature filter (5).

5. The drying chamber with the filter unit recessed according to claim 1, characterized in that, The filter surface of the high-temperature filter (5) is at an angle of 0-15 degrees to the horizontal plane.

6. The drying chamber with the filter unit recessed according to claim 1, characterized in that, The lateral distance of the vertical airflow guiding channel (3) is 400-500mm.

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