A flow equalizing device for coating drying

Abstract

The present invention discloses a flow equalizing device for coating drying, comprising a drying chamber and two flow equalizing boxes, the two flow equalizing boxes having the same structure and being symmetrically distributed outside the drying chamber, the air inlet direction of the flow equalizing boxes being perpendicular to the direction of material movement in the drying chamber; the flow equalizing boxes being connected to the interior of the drying chamber via a flow equalizing plate, and a plurality of vents being arranged on the flow equalizing plate along the direction of airflow. In the present invention, a flow divider plate and a flow guide opening on the flow divider plate are provided in the flow equalizing box, so that the airflow in the flow equalizing box can flow more evenly; the waist-shaped vents in the flow equalizing plate can effectively increase the contact area between the airflow and the coating surface; the flow plate on the top of the flow equalizing box can improve the stability and guiding effect of the airflow, reduce the turbulence and jet of the airflow, make the airflow pass through the flow equalizing box more smoothly, reduce the disturbance of the coating surface, and further improve the drying effect.

Description

Technical Field

[0001] The invention relates to the field of workpiece drying and processing, and in particular to a flow equalizing device for coating drying. Background Art

[0002] In industrial production, workpieces often require heating to improve production efficiency, optimize performance, and enhance quality. To achieve this, painted products are often dried in dedicated drying chambers. Drying chambers, as paint drying and curing equipment, are widely used in coating processes across various industries. A crucial component of large-scale pretreatment and coating lines, drying chambers utilize heating and ventilation systems to accelerate paint drying and curing, significantly shortening the coating cycle.

[0003] Chinese utility model patent application number CN201520582326.X discloses a lost foam drying and dehumidification device comprising a drying chamber, a drying tower, an air heater, and a controller. While this device can forcibly dry and dehumidify the lost foam, the heated air flows out of a single location for a long time, resulting in slow internal heat flow and a slow temperature rise. Furthermore, the bottom of the lost foam is heated and dried unevenly, resulting in low drying efficiency.

[0004] Chinese utility model patent application number 202222241312.4 discloses a drying chamber having at least one large workpiece entrance and exit door and at least one small workpiece entrance and exit door formed in the wall of the drying chamber. A large workpiece conveyor extends from the large workpiece entrance and exit door to the central drying space of the drying chamber, and a small workpiece conveyor extends from the small workpiece entrance and exit door along the inner edge drying space of the wall. The drying chamber described in this utility model provides independent drying areas for large and small workpieces on different production lines. Compared with two independent drying chambers, this reduces the heating space and heat dissipation area, improves energy utilization and production efficiency, and reduces the investment and floor space of the drying equipment. However, the uniformity of drying is poorly considered, and the quality and consistency of the coating are difficult to guarantee.

[0005] In the coating production process, paint drying accounts for up to 70% of energy consumption, and the uniformity of the drying process is directly related to the consistency of the coating color and the quality of the paint film. Therefore, it is necessary to improve airflow distribution, enhance drying uniformity, and reduce heat dissipation to achieve the goal of reducing energy consumption in the entire coating process. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and propose a flow equalizing device for coating drying, which can effectively solve the problems of uneven airflow in the existing coating drying process and difficulty in ensuring the quality and consistency of the coating.

[0007] The specific technical solutions adopted in the present invention are as follows:

[0008] A flow balancing device for coating drying, comprising:

[0009] A drying chamber, wherein the drying chamber is provided with a material inlet at one end and a material outlet at the other end along the material moving direction; and

[0010] 2 flow equalizing boxes, the 2 flow equalizing boxes have the same structure and are symmetrically distributed on the outside of the drying chamber, the air intake direction of the flow equalizing box is perpendicular to the material movement direction in the drying chamber; the flow equalizing box is connected to the inside of the drying chamber through a flow equalizing plate, and a number of air vents are arranged on the flow equalizing plate along the airflow direction.

[0011] Furthermore, the vent is a waist-shaped vent with smooth semicircular ends at both ends, and the two semicircular ends are connected to form the vent.

[0012] Furthermore, the vent holes are arranged in a cross-arrangement along the air inlet direction of the flow equalizing box.

[0013] Furthermore, the center spacing of the vent holes along the air inlet direction of the flow equalizing box and the center spacing of the vent holes perpendicular to the air inlet direction of the flow equalizing box are respectively equal.

[0014] Furthermore, the widths of the ventilation holes are equal, and the lengths of the ventilation holes gradually increase along the air inlet direction of the flow equalizing box.

[0015] Furthermore, the vent holes are located in the triangular area on the left and right sides of the inlet section of the flow balancing box, and the length of the vent holes in the area gradually increases toward both sides along the direction perpendicular to the air intake direction of the flow balancing box.

[0016] Furthermore, a diverter plate is provided in the flow balancing box along the air inlet direction, and the diverter plate is vertically connected to the flow balancing plate to symmetrically divide the flow balancing box into two identical spaces.

[0017] Furthermore, a plurality of guide openings are provided on the upper portion of the diverter plate.

[0018] Furthermore, the top of the flow balancing box is an arc-shaped flow guide plate, and the arc-shaped flow guide plate is symmetrically arranged about the diverter plate and extends smoothly toward the bottom of the flow balancing box.

[0019] Furthermore, along the air inlet direction of the flow balancing box, the height of the flow balancing box gradually decreases.

[0020] Beneficial effects:

[0021] (1) The flow equalizing device for coating drying according to the present invention is symmetrically arranged on the upper and lower sides of the drying chamber, so that the upper and lower surfaces of the workpiece entering the drying chamber are evenly heated, effectively improving the quality and consistency of the coating.

[0022] (2) The design of the diverter plate and guide opening in the flow equalizing box enables the airflow in the flow equalizing box to flow more evenly, avoiding local blockage or deviation of the airflow, thereby ensuring uniform heating and drying of the paint during the drying process.

[0023] (3) The setting of waist-shaped vents in the flow equalizer can effectively increase the contact area between the airflow and the coating surface, accelerate heat conduction and mass transfer, thereby improving drying efficiency and shortening drying time.

[0024] (4) The setting of the arc-shaped guide plate can improve the stability and guiding effect of the airflow, reduce the turbulence and jet of the airflow, make the airflow pass through the flow box more smoothly, reduce the disturbance of the paint surface, and further improve the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a flow equalizing device for coating drying according to the present invention;

[0026] Figure 2 This is a partial structural diagram of a flow equalizing device for coating drying according to the present invention;

[0027] Figure 3 This is a structural schematic diagram of a flow equalizing plate in a flow equalizing device for coating drying according to the present invention;

[0028] Figure 4 This is a front view of a flow equalizing device for coating drying according to the present invention;

[0029] Figure 5 This is a transverse cross-sectional view of a flow equalizing device for coating drying according to the present invention;

[0030] Figure 6 This is a longitudinal cross-sectional view of a flow equalizing device for coating drying according to the present invention.

[0031] Among them, 10. Drying chamber, 1101. Material inlet, 1102. Material outlet, 20. Flow equalizing box, 2101. Upper flow equalizing box, 2102. Lower flow equalizing box, 2201. Upper flow equalizing box air inlet duct, 2202. Lower flow equalizing box air inlet duct, 23. Flow equalizing plate, 2301. Vent, 24. Diverter plate, 2401. Guide opening, 2501. Right side wall, 2502. Left side wall, 2601. Right guide plate, 2602. Left guide plate, 2701. Front side wall, 2702. Rear side wall, 28. Top plate. DETAILED DESCRIPTION

[0032] To deepen the understanding of the present invention, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] It should be noted that the embodiments provided by the present invention are only for the effective description of the technical features of the invention. The positioning words such as front, back, left, right, top, and bottom are only for a better description of the embodiments of the present invention and cannot be regarded as a limitation on the technical solution of the present invention.

[0034] To overcome the shortcomings of the existing technology, a flow equalization device for coating drying is proposed to address the problems of uneven airflow during the existing coating drying process, making it difficult to ensure the quality and consistency of the coating. The specific technical solutions adopted by the present invention are as follows:

[0035] like Figure 1 The flow equalizing device for coating drying shown in the figure comprises a drying chamber 10 and a flow equalizing box 20 . A material inlet 1101 is provided at one end of the drying chamber 10 , and a material outlet 1102 is provided at the other end.

[0036] In this embodiment, two flow equalizers 20 are provided: an upper flow equalizer 2101 and a lower flow equalizer 2102. These two flow equalizers 20 are symmetrically arranged on the upper and lower sides of the drying chamber 10. Aside from their different locations, the upper and lower flow equalizers 2101 and 2102 are identical in all other respects. Therefore, to more clearly illustrate the specific implementation, the following examples will primarily use the upper flow equalizer 2101 as an example.

[0037] As attached Figure 2 As shown, the upper flow equalizing box 2101 is composed of the air inlet duct 2201, the flow equalizing plate 23, the diverter plate 24, the right side wall 2501, the left side wall 2502, the right guide plate 2601, the left guide plate 2602, the front side wall 2701, the rear side wall 2702, and the top plate 28. More specifically, the flow equalizing plate 23 serves as the bottom plate of the upper flow equalizing box 2101 and is connected to the drying chamber 10 through the flow equalizing plate 23. The top plate 28 is located above the flow equalizing plate 23, and a diverter plate 24 is connected between the top plate 28 and the flow equalizing plate 23; the two sides of the top plate 28 are connected to the corresponding right side wall 2501 and left side wall 2502 through the right side guide plate 2601 and the left side guide plate 2602 respectively; the front and rear sides of the top plate 28, the right side guide plate 2601, and the left side guide plate 2602 are connected to the bottom flow equalizing plate 23 through the front side wall 2701 and the rear side wall 2702 respectively.

[0038] As attached Figure 3 As shown, the equalizer plate 23 is provided with a plurality of vents 2301. The vents 2301 are waist-shaped, with smooth semicircular ends at both ends, and the two semicircular ends are connected to form a vent. The vents 2301 are arranged in a cross pattern along the airflow direction (i.e., the air inlet direction of the equalizer box 20). The center spacing of the vents 2301 along the airflow direction is equal to the center spacing perpendicular to the airflow direction.

[0039] The width of each vent hole 2301 is equal, and the length gradually increases along the airflow direction. In addition, the length of the vent holes 2301 in the triangular areas on the left and right sides of the inlet section of the flow equalizing box 2101 gradually increases along the direction perpendicular to the airflow.

[0040] As attached Figure 6 As shown, the diverter plate 24 of the upper flow equalizing box 2101 is arranged between the flow equalizing plate 23 and the top plate 28 along the direction of the air inlet pipe 2201, and is vertically connected to the flow equalizing plate 23, and divides the flow equalizing box 2101 into two identical spaces that are symmetrical on the left and right.

[0041] The upper portion of the diverter plate 24 is provided with a plurality of guide openings 2401 , which are conducive to achieving uniform distribution of airflow on both sides of the flow balancing box.

[0042] As attached Figure 4 As shown, a right arc-shaped guide plate 2601 and a left arc-shaped guide plate 2602 are respectively provided between the right side wall 2501 and the left side wall 2502 of the flow equalizing box 2101 and the top plate 28 to improve the stability and guiding effect of the airflow.

[0043] The front wall surface 2701 of the flow balancing box 2101 is higher than the rear wall surface 2702 , which is conducive to achieving uniform distribution of front and rear airflows in the flow balancing device 2101 .

[0044] As attached Figure 1 、 4 As shown in FIG5 , the drying process of a flow equalizing device for drying paint is as follows:

[0045] In the figure, the solid arrow points to the direction of hot air flow, and the dotted arrow points to the direction of workpiece transmission. The hot air flow is divided into two parts and enters the upper flow equalizing box 2101 and the lower flow equalizing box 2102 through the air inlet pipe 2201 and the air inlet pipe 2202. The hot air flow entering the upper flow equalizing box 2101 is divided into two parts, left and right, by the diverter plate 24. The air flows on the left and right sides pass through the guide opening 2401 of the diverter plate 24 and are guided by the right circular arc guide plate 2601 and the left circular arc guide plate 2602 to be evenly distributed on the left and right sides. Then, the hot air flow flows vertically downward into the drying chamber 10 through the waist-shaped vents 2301 on the flow equalizing plate 23, and heats and dries the workpiece. Finally, the air flow flows out from the inlet 1101 and outlet 1102 of the drying chamber 11. Another part of the hot air flow enters the drying chamber 10 through the lower flow equalizing box 2102. The process is similar to the above. The only difference is that the air flow enters the drying chamber 10 vertically upward from the vents of the flow equalizing plate.

[0046] Meanwhile, in the drying chamber 10, the workpieces to be dried enter from the inlet 1101, pass through the flow equalizer 20, and are heated and dried by the hot air flow from the vent holes of the flow equalizer. Subsequently, the workpieces are sent out from the outlet 1102, completing the drying process.

[0047] Through these measures, the hot air flow is rationally divided before entering the equalizer. Inside the equalizer, it is guided by the guide plates and arc-shaped guide plates, ensuring even airflow distribution. The waist-shaped vents on the equalizer further increase the contact area between the hot air flow and the workpiece, promoting a rapid and uniform drying process, improving drying efficiency and product quality.

Claims

1. A flow balancing device for coating drying, characterized in that: include: A drying chamber (10), wherein the drying chamber (10) is provided with a material inlet (1101) at one end and a material outlet (1102) at the other end along the material movement direction; and Two flow equalizing boxes (20), the two flow equalizing boxes (20) have the same structure and are symmetrically distributed on the upper and lower sides of the drying chamber (10), the air inlet direction of the flow equalizing boxes (20) and the material movement direction in the drying chamber (10) are perpendicular to each other; the flow equalizing boxes (20) are connected to the interior of the drying chamber (10) through a flow equalizing plate (23), and a plurality of vents (2301) are arranged on the flow equalizing plate (23) along the air flow direction; the vents (2301) are located in the triangular area on the left and right sides of the inlet section of the flow equalizing box (20), and the length of the vents (2301) in the area gradually increases toward both sides along the direction perpendicular to the air inlet direction of the flow equalizing box (20); A flow dividing plate (24) is provided in the flow equalizing box (20) along the air inlet direction, and the flow dividing plate (24) is vertically connected to the flow equalizing plate, symmetrically dividing the flow equalizing box into two identical spaces.

2. A flow balancing device for coating drying according to claim 1, characterized in that: The vent (2301) is a waist-shaped vent, with both ends being smooth semicircular ends, and the two semicircular ends are connected to form the vent.

3. A flow balancing device for coating drying according to claim 1, characterized in that: The vent holes (2301) are arranged in a cross-arrangement along the air intake direction of the flow equalizing box (20).

4. A flow balancing device for coating drying according to claim 3, characterized in that: The center spacing of the vent holes (2301) along the air intake direction of the flow equalizing box (20) and the center spacing of the vent holes (2301) perpendicular to the air intake direction of the flow equalizing box (20) are respectively equal.

5. A flow balancing device for coating drying according to claim 1, 2, 3 or 4, characterized in that: The widths of the ventilation holes (2301) are equal, and the lengths of the ventilation holes (2301) gradually increase along the air inlet direction of the flow equalizing box (20).

6. A flow balancing device for coating drying according to claim 1, characterized in that: A plurality of guide openings (2401) are provided on the upper portion of the diverter plate (24).

7. The flow equalizing device for coating drying according to claim 1, characterized in that: The top of the flow balancing box (20) is an arc-shaped flow guide plate, and the arc-shaped flow guide plate is symmetrically arranged about the diverter plate (24) and smoothly extends toward the bottom of the flow balancing box (20).

8. The flow equalizing device for coating drying according to claim 1, characterized in that: Along the air intake direction of the flow balancing box (20), the height of the flow balancing box (20) gradually decreases.

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