High-efficiency drying air knife

Abstract

The utility model discloses a kind of high-efficiency drying air knives, comprising: upper air knife assembly and lower air knife assembly;Upper air knife assembly includes upper air knife shell, upper air inlet pipe and upper air knife face;The outlet array of upper air knife face is provided with upper air outlet for the upper surface of corresponding product is blown;Lower air knife assembly includes lower air knife shell, lower air inlet pipe and lower air knife face;The outlet array of lower air knife face is provided with lower air outlet for the lower surface of corresponding product is blown;Upper air knife face and lower air knife face are integrally prepared using high-temperature-resistant, corrosion-resistant and wind-erosion-resistant material.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, specifically a high-efficiency drying air knife. Background Technology

[0002] The current drying method used in horizontal chain wet drying equipment for products such as photovoltaic silicon wafers involves using high-pressure air knives inside the drying tank to blow away water droplets from the product surface. The air outlets are designed in a strip-shaped slit configuration, with the upper and lower air knives symmetrically designed. Water droplets are removed from the product surface by oblique blowing through the slits of the air knife blades, thus achieving product conveying and drying. However, the air knife material used in the drying tanks of current industry equipment is not heat-resistant. Long-term use of this material easily leads to deformation, causing the air outlet slits to narrow, resulting in uneven airflow. This results in products not being dried properly, leaving liquid residue on the surface, and a decrease in the pass rate. Furthermore, the material is prone to oxidation under prolonged use in this environment, reducing its lifespan. Additionally, the air knife consumes a large amount of air, leading to high fan power consumption and increased costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a high-efficiency drying air knife, including: Upper air knife assembly and lower air knife assembly; The upper air knife assembly includes an upper air knife housing, an upper air inlet pipe, and an upper air knife face; the upper air knife housing has an upper air inlet, the upper air inlet pipe is connected to the upper air knife housing through the upper air inlet, an upper flow equalizing plate is horizontally arranged inside the upper air knife housing and the upper flow equalizing plate is provided with vertically penetrating upper flow equalizing holes at equal intervals, the air outlet of the upper air knife housing is provided with an upper air knife face, and the air outlet array of the upper air knife face is provided with upper air outlet holes for blowing air onto the upper surface of the corresponding product; The lower air knife assembly includes a lower air knife housing, a lower air inlet pipe, and a lower air knife face; the lower air knife housing has a lower air inlet, the lower air inlet pipe is connected to the lower air knife housing through the lower air inlet, a lower flow equalizer is horizontally arranged inside the lower air knife housing and the lower flow equalizer is provided with vertically penetrating lower flow equalizer holes at equal intervals, the air outlet of the lower air knife housing is provided with a lower air knife face, and the air outlet array of the lower air knife face is provided with lower air outlet holes for blowing air onto the lower surface of the corresponding product; Both the upper and lower air blade surfaces are integrally made of high-temperature resistant, corrosion-resistant, and wind-erosion-resistant materials, including but not limited to CPVC, PTFE, and PEEK, to prevent air blade corrosion, deformation, and air outlet blockage.

[0004] Wherein: there are at least two upper air inlets equally distributed on the upper air blade housing, and at least two lower air inlets equally distributed on the lower air blade housing.

[0005] The diameter of the upper and lower air outlets is between 0.5 and 2 mm.

[0006] The inclination angle of the upper and lower air outlets is between 0° and 30°.

[0007] Wherein: the upper air blade surface and the upper air blade housing are connected by screws, and the connection between the upper air blade surface and the upper air blade housing is sealed with sealing strips to prevent air leakage in the upper air blade assembly and improve the air blade drying efficiency. The lower air blade face and the lower air blade housing are connected by screws, and the connection between the lower air blade face and the lower air blade housing is sealed with a sealing strip to prevent air leakage in the lower air blade assembly and improve the drying efficiency of the air blade.

[0008] Compared with the prior art, the beneficial effects of this utility model are: The structure and material of the air knife have been optimized, which has improved the uniformity of air output, reduced the air volume requirement of the air knife, reduced power consumption costs, and improved drying efficiency. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side sectional view of the present invention. Figure 3 for Figure 1 Enlarged structural diagram of section A in the middle; Figure 4 for Figure 2 Enlarged structural diagram of section B.

[0010] In the diagram: 11. Upper air blade housing; 12. Upper air inlet pipe; 13. Upper air blade surface; 131. Upper air outlet; 21. Lower air blade housing; 22. Lower air inlet pipe; 23. Lower air blade surface; 231. Lower air outlet; 30. Roller; 40. Product. Detailed Implementation

[0011] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0012] Please see Figure 1-3 This embodiment provides a high-efficiency drying air knife, comprising: Upper air knife assembly and lower air knife assembly; The upper air knife assembly includes an upper air knife housing 11, an upper air inlet pipe 12, and an upper air knife face 13. The upper air knife face 13 and the upper air knife housing 11 are connected by screws, and the connection between the upper air knife face 13 and the upper air knife housing 11 is sealed with a sealing strip to prevent air leakage in the upper air knife assembly and improve the drying efficiency of the air knife. The upper air knife housing 11 has two upper air inlets that are equally spaced. The upper air inlet pipe 12 is connected to the upper air knife housing 11 through the upper air inlets. An upper flow equalizer is horizontally arranged inside the upper air knife housing 11, and vertically penetrating upper flow equalizer holes are equally spaced on the upper flow equalizer. The upper air knife face 13 is provided at the air outlet of the upper air knife housing 11. The air outlet array of the upper air knife face 13 is provided with upper air outlet holes 131 for blowing air onto the upper surface of the product 40. The lower air knife assembly includes a lower air knife housing 21, a lower air inlet pipe 22, and a lower air knife face 23. The lower air knife face 23 and the lower air knife housing 21 are connected by screws, and the connection between the lower air knife face 23 and the lower air knife housing 21 is sealed with a sealing strip to prevent air leakage in the lower air knife assembly and improve the drying efficiency of the air knife. The lower air knife housing 21 has two equally spaced lower air inlets. The lower air inlet pipe 22 is connected to the lower air knife housing 21 through the lower air inlets. A lower flow equalizer is horizontally arranged inside the lower air knife housing 21, and vertically penetrating lower flow equalizer holes are equally spaced on the lower flow equalizer. The lower air knife face 23 is provided at the air outlet of the lower air knife housing 21. The air outlet array of the lower air knife face 23 is provided with lower air outlet holes 231 for blowing air onto the lower surface of the product 40. Both the upper air blade 13 and the lower air blade 23 are made of high-temperature resistant, corrosion-resistant and wind erosion-resistant materials, including but not limited to CPVC, PTFE and PEEK, to prevent air blade corrosion, deformation and air outlet blockage.

[0013] Among them: the diameter of the upper air outlet 131 and the lower air outlet 231 is between 0.5-2mm; the inclination angle of the upper air outlet 131 and the lower air outlet 231 is between 0°-30°.

[0014] The design of this utility model involves first introducing air into the upper air inlet pipe 12 and the lower air inlet pipe 22 of the air knife, and then evenly introducing the air into the upper air knife shell 11 and the lower air knife shell 21 through two upper air inlets and two lower air inlets, respectively. The air is then evenly blown out through the upper air outlet 131 on the upper air knife surface 13 and the lower air outlet 231 on the lower air knife surface 23, respectively. Both the upper air knife shell 11 and the lower air knife shell 21 are made of high-temperature resistant material and are integrally formed using a bending process, ensuring the strength of the shell and preventing deformation during long-term use. The upper air knife assembly and the lower air knife assembly... The blade assembly features a symmetrical or asymmetrical design. The upper air outlet 131 on the upper air blade 13 and the lower air outlet 231 on the lower air blade 23 are composed of one or more rows of small and dense fine holes. Depending on the working conditions, the diameter of the upper air outlet 131 and the lower air outlet 231 can be between 0.5-2mm and the tilt angle can be between 0°-30°, allowing for relative arrangement and combination under suitable working conditions. This structure can evenly cover the product and quickly dry water droplets on the product surface, reducing air consumption and improving the drying effect and drying efficiency of the air blade.

[0015] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-efficiency drying air knife, characterized in that, include: Upper and lower air knife assemblies; The upper air knife assembly includes an upper air knife shell (11), an upper air inlet pipe (12), and an upper air knife surface (13); the upper air knife shell (11) has an upper air inlet and there are at least two upper air inlets that are equally distributed on the upper air knife shell (11); the upper air inlet pipe (12) is connected to the upper air knife shell (11) through the upper air inlet; an upper flow equalizer is horizontally arranged inside the upper air knife shell (11) and vertically penetrating upper flow equalizer holes are equally spaced on the upper flow equalizer; the air outlet of the upper air knife shell (11) is provided with an upper air knife surface (13); the air outlet array of the upper air knife surface (13) is provided with upper air outlet holes (131) for blowing air onto the upper surface of the corresponding product (40); The lower air knife assembly includes a lower air knife shell (21), a lower air inlet pipe (22), and a lower air knife surface (23). The lower air knife shell (21) has a lower air inlet and there are at least two lower air inlets that are equally distributed on the lower air knife shell (21). The lower air inlet pipe (22) is connected to the lower air knife shell (21) through the lower air inlet. A lower flow equalizer is horizontally arranged inside the lower air knife shell (21), and vertically penetrating lower flow equalizer holes are equally spaced on the lower flow equalizer. The air outlet of the lower air knife shell (21) is provided with a lower air knife surface (23). The air outlet array of the lower air knife surface (23) is provided with lower air outlet holes (231) for blowing air onto the lower surface of the corresponding product (40). The upper wind blade (13) and the lower wind blade (23) are both made of high temperature resistant, corrosion resistant and wind erosion resistant materials in one piece; The upper air blade surface (13) and the upper air blade housing (11) are connected by screws, and the connection between the upper air blade surface (13) and the upper air blade housing (11) is sealed with sealing strips to prevent air leakage in the upper air blade assembly and improve the air blade drying efficiency. The lower air blade surface (23) and the lower air blade housing (21) are connected by screws, and the connection between the lower air blade surface (23) and the lower air blade housing (21) is sealed with a sealing strip to prevent air leakage in the lower air blade assembly and improve the drying efficiency of the air blade.

2. The high-efficiency drying air knife according to claim 1, characterized in that: The diameter of the upper air outlet (131) and the lower air outlet (231) is between 0.5-2mm.

3. The high-efficiency drying air knife according to claim 1, characterized in that: The inclination angles of the upper air outlet (131) and the lower air outlet (231) are between 0° and 30°.

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