Guide plate structure of air floating type nozzle

Abstract

A flow guide plate structure of an air floating type nozzle comprises a lower air bellow, a plurality of air channels are connected to the surface of the lower air bellow, the lower air bellow is communicated with the air channels, the two sides of the lower air bellow are connected with an external air inlet pipe, a flow guide plate is connected to the upper ends of the air channels, a plurality of nozzles are evenly distributed on the flow guide plate, and the flow guide plate is arranged in the air channels in a V shape. Compared with the prior art, according to the guide plate structure of the air floating type nozzle, the guide plate is improved, the V-shaped guide plate is adopted, it is guaranteed that the air pressure in the middle and the air pressure on the two sides of the guide plate are relatively stable, the air volume is uniform, the fluidity index of the content of rubber in fabric reaches 98%, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ovens, and particularly to a flow guide plate structure of an air-floating nozzle in an oven. Background Art

[0002] In industries such as copper clad laminates, insulating materials, and decorative materials, it is necessary to impregnate flexible fabrics, such as wood pulp paper, fiberglass cloth, etc., with resin to achieve performance indicators such as insulation, strength, and temperature resistance. This process is completed through the oven or drying oven of a sizing machine. As Figure 3 shown, it is a schematic structural diagram of a hot air oven. The circulating fan 10 generates an air flow with a certain air volume and air pressure. The air flow enters the lower air box through the side air duct 20. An air duct is connected to the lower air box, and an air nozzle is connected to the air duct; an upper air box, upper air nozzles, and upper air ducts are also provided at the upper part of the oven. The fabric is located between the upper and lower air nozzles. The air flow generated by the fan sends heat to the upper and lower surfaces of the fabric, achieving the effects of drying and air floating.

[0003] Currently, for the nozzles in existing hot air ovens, a flow guide plate is provided in the air duct. The flow guide plate is a flat punching structure. As Figure 4 shown, its function is to make the air flow evenly flow through the air nozzle, send heat to the fabric, and at the same time use the flowing action of the air flow to take away the solvent to achieve the drying effect. In fact, the structures of such air nozzles and flow guide plates cause uneven drying of the fabric. Through measurement, it is found that there are significant differences in the air velocity and air pressure at the middle and both sides of the air nozzle in the transverse direction, resulting in large fluctuations in the air volume within the transverse range of the air nozzle. Eventually, the drying temperatures of the products are different, and the volatilization removal effects are different, seriously affecting the product quality. The fluidity of the internal glue content of the fabric produced is only 75%, and "dry flowers" are extremely likely to occur, such as quality problems caused by insufficient drying of each point of the resin, affecting the product quality. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a flow guide plate structure of an air-floating nozzle in view of the above-mentioned deficiencies of the prior art.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A flow guide plate structure of an air-floating nozzle, including a lower air box. A plurality of air ducts are connected to the surface of the lower air box. The lower air box and the air ducts are interconnected. Both sides of the lower air box are connected to external air inlet pipes. The upper ends of the air ducts are connected to a flow guide plate. A plurality of nozzles are evenly distributed on the flow guide plate. The flow guide plate is arranged in a "V" shape in the air duct.

[0007] Further, the included angle of the "V" shape of the flow guide plate is between 150° and 160°.

[0008] Further, the "V"-shaped fold angle of the deflector is 155°, and the nozzle is an 11x11 square hole.

[0009] Compared with the prior art, the deflector structure of the air flotation nozzle of the present utility model improves the deflector, adopts a "V"-shaped deflector, ensures relatively stable air pressure in the middle and on both sides of the deflector, uniform air volume, enables the fluidity index of the inner rubber content of the fabric to reach 98%, and improves product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the present utility model;

[0011] Figure 2 is a schematic structural diagram of the deflector of the present utility model;

[0012] Figure 3 is a schematic structural diagram of the existing one;

[0013] Figure 4 is a schematic structural diagram of the existing downwind box diversion;

[0014] Among them, 1, downwind box; 2, air duct; 3, deflector; 4, nozzle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The technical solutions in the embodiments of the present utility model will be clearly and completely described below.

[0016] As Figure 1 and Figure 2 shown, a deflector structure of an air flotation nozzle includes a downwind box 1, and a plurality of air ducts 2 are connected to the surface of the downwind box 1. Among them, the downwind box 1 and the air ducts 2 adopt a hollow structure inside, the downwind box 1 and the air ducts 2 are interconnected, both sides of the downwind box 1 are connected to an external air inlet pipe, hot air is introduced through the air inlet pipe and then discharged from the air ducts 2. The upper end of the air duct 2 is connected to a deflector 3, and a plurality of nozzles 4 are evenly distributed on the deflector 3. The deflector 3 is arranged in a "V" shape in the air duct 2. Among them, the "V"-shaped fold angle of the deflector is between 150° and 160°.

[0017] Since the downwind box intakes air from both sides, turbulence appears in the middle, resulting in a large air pressure in the middle. The "V"-shaped deflector 3 increases the middle air resistance at the middle, balances the air pressure, and ensures uniform air volume.

[0018] In this embodiment, the "V"-shaped fold angle of the deflector is 155°, and the nozzle is an 11x11 square hole. At this time, the wind speed and air pressure at each position in the horizontal direction of the nozzle are measured, and the uniformity can reach more than 98%. Thus, it is ensured that the fabric in the drying box can operate under relatively stable wind speed and air volume. The improvement of the above structure can make the fluidity of the inner rubber content of the fabric, that is, the uniformity index, reach 98%, significantly improving product quality.

[0019] The utility model is not limited to the described embodiments. Those skilled in the art can still make some modifications or changes without departing from the spirit of the utility model, that is, within the scope of the disclosure. Therefore, the scope of the protection of the rights of the utility model shall be subject to the scope defined by the claims.

Claims

1. A guide plate structure of an air-floating nozzle, comprising a lower wind box, a plurality of wind ducts are connected to the surface of the lower wind box, the lower wind box and the wind ducts are interconnected, and both sides of the lower wind box are connected to an external air inlet pipe, characterized in that: The upper end of the air duct is connected with a guide plate, on which a plurality of nozzles are evenly distributed, and the guide plate is arranged in a "V" shape in the air duct.

2. The guide plate structure of the air floating nozzle according to claim 1, characterized in that: The "V"-shaped folding angle of the guide plate is between 150° and 160°.

3. The guide plate structure of the air floating nozzle according to claim 2, characterized in that: The "V"-shaped angle of the guide plate is 155°, and the nozzle is a 11x11 square hole.

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