A drying box for steel cabinet spraying line

Abstract

The utility model relates to a kind of steel cabinet drying oven for steel cabinet spraying line in steel cabinet production technical field, including by front to rear sequentially arranged preheating chamber, drying chamber and cooling chamber;The both sides of drying chamber are horizontally rotationally connected with spiral fan blade structure, and gas is made to flow from top to bottom by the rotation of spiral fan blade structure, ensure that drying chamber upper and lower temperature is balanced;The utility model drying chamber adopts the air circulation system of the combination of spiral fan blade structure and semicircular recess area: spiral fan blade is driven hot air stream part by rotation and enters preheating chamber preheating workpiece, and the rest air stream flows downward after secondary heating by semicircular recess area, ensure that the temperature difference in drying chamber is controlled in smaller range, guarantee the uniformity of coating solidification process.

Description

Technical Field

[0001] This utility model relates to the field of steel cabinet manufacturing technology, and in particular to a drying box for a steel cabinet spraying line. Background Technology

[0002] Steel cabinets, due to their sturdy structure and fire and moisture resistance, are widely used in libraries, archives, and data rooms for storing books, documents, and important items. During their production, the side panels need to be assembled with the frame and then coated with a powder coating to enhance corrosion resistance and aesthetics. The uniformity and efficiency of the coating process directly affect product quality and production costs; therefore, optimizing the coating production line is of great importance.

[0003] Although the heating components in the existing drying chamber are evenly distributed, the temperature of the drying chamber varies greatly due to the upward movement of hot air, which affects the uniformity of coating curing. Furthermore, the lack of preheating and cooling stages can easily lead to "external burning and internal brittleness" of the coating or defects such as pinholes and cracks.

[0004] To address the above issues, we designed a drying box for steel cabinet spraying lines. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model discloses a drying box for a steel cabinet spraying line.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A drying chamber for a steel cabinet spraying line includes a preheating chamber, a drying chamber, and a cooling chamber arranged sequentially from front to back; both sides of the drying chamber are horizontally rotatably connected to a spiral fan blade structure, and the rotation of the spiral fan blade structure causes gas to flow from top to bottom, ensuring that the temperature of the drying chamber is uniform from top to bottom.

[0008] Furthermore, the drying chamber has semi-circular recessed areas on both sides to accommodate the outer side of the spiral fan blade structure, and the heating wire of the drying chamber is arranged on the wall of the semi-circular recessed area so that the rotation of the spiral fan blade structure can cause part of the gas in the drying chamber to flow into the preheating chamber to preheat the workpiece, and the remaining gas enters the semi-circular recessed area to be heated again.

[0009] Furthermore, the spiral fan blade structure includes a rotating rod with its upper end horizontally rotatably connected to the top surface of the drying chamber, and the rotating rod is provided with spiral blades.

[0010] Furthermore, the upper end of the spiral fan blade structure is provided with a secondary transmission wheel, so that it can rotate along with the slider as it passes over the coating line.

[0011] Furthermore, the secondary transmission wheel includes a driven wheel fixedly sleeved on the upper end of the spiral fan blade structure and a transmission wheel rotatably connected to the top surface of the drying chamber, wherein the transmission wheel and the driven wheel are in transmission cooperation.

[0012] Furthermore, both the preheating chamber and the cooling chamber are provided with at least one expansion zone along the front-to-back direction, which is used to induce turbulence in some of the gas and cause it to remain in the chamber, thereby ensuring that the temperature of the chamber is stable.

[0013] Furthermore, the spiral fan blades on both sides are arranged opposite or staggered.

[0014] Furthermore, the preheating chamber and the drying chamber are surrounded by an insulation layer with openings at both ends.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The drying chamber uses a spiral fan blade structure to rotate, causing the gas above the drying chamber to move downwards. At this time, a larger proportion of the cold air from the cooling chamber enters the upper part of the drying chamber, resulting in a more uniform temperature inside the drying chamber.

[0017] The drying chamber adopts an airflow circulation system that combines a spiral fan blade structure with a semi-circular recessed area: the spiral fan blade drives part of the hot airflow to enter the preheating chamber to preheat the workpiece through rotation, and the remaining airflow flows downward after being heated a second time by the semi-circular recessed area, ensuring that the temperature difference between the upper and lower parts of the drying chamber is controlled within a small range, thus ensuring the uniformity of the coating curing process.

[0018] 3. The expansion zones in the preheating and cooling chambers, which are stagnant due to turbulence, help stabilize the chamber temperature. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first structure of this utility model (with the top plate removed);

[0020] Figure 2 This is a top view and a schematic diagram of the gas flow principle of the first structure (without the top plate) of this utility model;

[0021] Figure 3 This is a schematic diagram of the spiral fan blade structure in this utility model;

[0022] Figure 4 This is a schematic diagram of the second structure of this utility model (without the top plate);

[0023] Figure 5 This is a top view and a schematic diagram of the gas flow principle of the second structure of this utility model (without the top plate).

[0024] In the diagram: 1. Preheating chamber; 2. Drying chamber; 21. Semicircular recessed area; 3. Cooling chamber; 4. Spiral fan blade structure; 41. Rotating rod; 42. Spiral blade; 5. Driven wheel; 6. Transmission wheel. Detailed Implementation

[0025] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0026] A drying box for a steel cabinet spraying line is applied to a steel cabinet side wall spraying production line, which allows the workpiece to move along the track under the action of a slider, so that the workpiece is sprayed and dried in sequence.

[0027] Example 1, in conjunction with Appendix Figure 1-3 A drying box for a steel cabinet spraying line includes a preheating chamber 1, a drying chamber 2, and a cooling chamber 3 arranged sequentially from front to back; that is, the workpiece passes through the preheating chamber 1, the drying chamber 2, and the cooling chamber 3 in sequence.

[0028] It should be noted that: the preheating chamber 1 has a workpiece inlet at the front center and the cooling chamber 3 has a workpiece outlet at the rear center.

[0029] Both sides of the drying chamber 2 are horizontally rotatably connected to a spiral fan blade structure 4. The rotation of the spiral fan blade structure 4 causes the gas to flow from top to bottom, ensuring that the temperature of the drying chamber 2 is balanced.

[0030] In the example, the spiral fan blade structure 4 is rotatably connected to the top wall of the drying chamber 2 via a bearing seat.

[0031] As needed, multiple spiral fan blade structures 4 are arranged at equal intervals along the front-to-back direction.

[0032] Furthermore, the drying chamber 2 has semi-circular recessed areas 21 on both sides to accommodate the outer part of the spiral fan blade structure 4, and the heating wires (such as resistance heating wires, not shown in the figure) of the drying chamber 2 are arranged on the wall surface of the semi-circular recessed areas 21. That is to say, multiple semi-circular recessed areas 21 are provided on both sides of the drying chamber 2, and heating wires are arranged on the wall surface of the semi-circular recessed areas 21. The spiral fan blade structure 4 is coaxial with the inner side of the semi-circular recessed area 21. Furthermore, the radius of the semi-circular recessed area 21 is larger than the outer contour radius of the spiral fan blade structure 4. As needed, the difference between the radius of the semi-circular recessed area 21 and the outer contour radius of the spiral fan blade structure 4 is 10~50mm; preferably 20~35mm.

[0033] This configuration allows the rotation of the spiral fan blade structure 4 to drive part of the airflow into the preheating chamber 1 to preheat the workpiece. The remaining airflow is then heated a second time by the semi-circular recessed area 21 and flows downwards. Simultaneously, it allows the gas to move from top to bottom, counteracting the problem of high-temperature gas rising and causing a higher temperature at the top and lower temperature at the bottom, thus ensuring a uniform temperature throughout the drying chamber 2. In this example, the temperature difference between the top and bottom of the drying chamber 2 is controlled within ±℃, significantly improving the uniformity of coating curing.

[0034] Depending on the needs, the spiral fan blade structures 4 on both sides can be arranged opposite each other or staggered.

[0035] Furthermore, the spiral fan blade structure 4 includes a rotating rod 41 with its upper end horizontally rotatably connected to the top surface of the drying chamber 2, and the rotating rod 41 is provided with spiral blades 42.

[0036] Depending on the requirements, the spiral blades 42 can be a single unit, such as an auger structure, or multiple blades spaced apart, forming a spiral shape.

[0037] In one possible implementation, to reduce the number of power sources, the spiral fan blade structure 4 may not be equipped with a drive device that directly drives its rotation, and the movement tendency of the slider can also be utilized. For example, the upper end of the spiral fan blade structure 4 is provided with a secondary transmission wheel 6 so that it can follow the movement of the slider and rotate as the slider passes by on the spraying line; specifically, the secondary transmission wheel 6 includes a driven wheel 5 fixedly sleeved on the upper end of the spiral fan blade structure 4 and a transmission wheel 6 rotatably connected to the top surface of the drying chamber 2, and the transmission wheel 6 and the driven wheel 5 are in a transmission cooperation.

[0038] Depending on the requirements, the drive wheel 6 and the driven wheel 5 can be friction-driven wheels. Depending on the requirements, when the slider side has a toothed structure, the drive wheel 6 and the driven wheel 5 can be gears.

[0039] As needed, the preheating chamber 1 and the drying chamber 2 are provided with an insulation layer with openings at both ends.

[0040] Working principle: The workpiece enters the preheating chamber 1 in sequence for airflow preheating (stable temperature rise in the expansion zone), the spiral fan blade structure 4 in the drying chamber 2 drives the heat circulation and the cooling chamber 3 (stable temperature drop in the expansion zone), and the workpiece enters the next process after cooling.

[0041] Example 2, in conjunction with Appendix Figure 4-5 A drying box for a steel cabinet spraying line, in accordance with the technology of Embodiment 1, both the preheating chamber 1 and the cooling chamber 3 are provided with at least one expansion zone along the front-to-back direction, which is used to induce some gas to turbulently flow and remain in the chamber, thereby ensuring the temperature of the chamber is stable.

[0042] Furthermore, the expansion zone can also be understood as a recessed area on the inner side of the preheating chamber 1 or cooling chamber 3 that is concave away from its central axis.

[0043] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A drying oven for a steel cabinet spray painting line, characterized in that: It includes a preheating chamber (1), a drying chamber (2) and a cooling chamber (3) arranged sequentially from front to back; both sides of the drying chamber (2) are horizontally rotatably connected to a spiral fan blade structure (4). The rotation of the spiral fan blade structure (4) causes the gas to flow from top to bottom, ensuring that the temperature of the drying chamber (2) is balanced.

2. The drying box for a steel cabinet spray painting line according to claim 1, characterized in that: The drying chamber (2) has semi-circular recessed areas (21) on both sides for accommodating the outer side of the spiral fan blade structure (4), and the heating wire of the drying chamber (2) is arranged on the wall of the semi-circular recessed area (21) so that the rotation of the spiral fan blade structure (4) causes some of the gas in the drying chamber (2) to flow into the preheating chamber (1) to preheat the workpiece, and the remaining gas enters the semi-circular recessed area (21) to be heated again.

3. A drying box for a steel cabinet spray painting line according to claim 1, characterized in that: The spiral fan blade structure (4) includes a rotating rod (41) with its upper end horizontally rotatably connected to the top surface of the drying chamber (2), and the rotating rod (41) is provided with spiral blades (42).

4. A drying box for a steel cabinet spray painting line according to claim 1, characterized in that: The upper end of the spiral fan blade structure (4) is provided with a secondary transmission wheel (6) so that it can rotate along with the slider when the slider passes by on the spraying line.

5. A drying oven for a steel cabinet spray painting line according to claim 4, characterized in that: The secondary transmission wheel (6) includes a passive wheel (5) fixedly sleeved on the upper end of the spiral fan blade structure (4) and a transmission wheel (6) rotatably connected to the top surface of the drying chamber (2). The transmission wheel (6) and the passive wheel (5) are in transmission cooperation.

6. A drying box for a steel cabinet spray painting line according to claim 1, characterized in that: Both the preheating chamber (1) and the cooling chamber (3) are provided with at least one expansion zone in the front-to-back direction, which is used to cause some gas to turbulentize and remain in the chamber, so as to ensure the temperature of the chamber is stable.

7. A drying box for a steel cabinet spray painting line according to claim 1, characterized in that: The spiral fan blade structures (4) on both sides are arranged oppositely or alternately.

8. A drying box for a steel cabinet spray painting line according to claim 1, characterized in that: The preheating chamber (1) and drying chamber (2) are surrounded by an insulation layer with openings at both ends.

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