Slit air knife

Abstract

The utility model belongs to the technical field of surface cleaning equipment, and particularly relates to a slit air knife. The inner area of the slit air knife comprises an air inlet area, an air storage area and an air outlet area, the three areas are vertically stacked and distributed from top to bottom, the upper portion of the air inlet area is an air inlet, the lower portion of the air inlet area is an arch-bridge-shaped fluid distributor, the arch-bridge-shaped fluid distributor is tightly connected with the upper portion of the air storage area, the upper portion of the air storage area is in a cuboid shape, and the air inlet is communicated with the air inlet. The trapezoid structure in the middle of the air storage area enables the flow channel to be gradually shrunk and extend to form a small cuboid, the flow channel on the lower portion of the small cuboid is suddenly shrunk to form a slit, and the slit extends downwards to form a narrow channel which is the air outlet area. The utility model has the advantages of simple structure, easy processing, adjustable tuyere size, and uniform and stable air outlet.

Description

Technical Field

[0001] The utility model belongs to the technical field of surface cleaning equipment, and in particular relates to a slit air knife with a special internal structure. Background Art

[0002] Air knife, also known as air knife, is a type of gas output device with a large chamber and narrow nozzle. The gas is compressed by air compressor or fan and rectified by the internal chamber of the air knife, and then ejected from the narrow nozzle with high-speed airflow. It has the advantages of low cost, easy installation and adjustable size. It is often used in metal, printing, optics, film and other industries to blow away dust, moisture, impurities on the surface of products and assist in drying.

[0003] The existing wind knife has a complex internal structure and uneven air output, which will affect product quality. Utility Model Content

[0004] The utility model aims to address the deficiencies in the prior art and provide a slit air knife with a special internal structure, so as to simplify the internal structure of the air knife and improve the uniformity of the air outlet of the air knife.

[0005] The technical solution of the utility model is as follows:

[0006] A slit air knife, which includes an air inlet area, an air storage area and an air outlet area from top to bottom;

[0007] The air inlet area includes a columnar inlet, the bottom surface of the columnar inlet is connected to an arch bridge-shaped fluid distributor, and the upper surface of the top of the columnar inlet is an air inlet;

[0008] The air storage area is a cavity flow channel with a width that gradually decreases from top to bottom. The upper part of the cavity flow channel is a first rectangular cavity flow channel. The upper surface of the first rectangular cavity flow channel is provided with the arch bridge-shaped fluid distributor, and the first rectangular cavity flow channel is connected to the arch bridge-shaped fluid distributor; the lower surface of the first rectangular cavity flow channel is connected to the trapezoidal cavity flow channel, and the lower surface of the trapezoidal cavity flow channel is connected to the second rectangular cavity flow channel, and the lower part of the second rectangular cavity flow channel is connected to the air outlet area;

[0009] The air outlet area is a third rectangular parallelepiped cavity flow channel, and the width of the third rectangular parallelepiped cavity flow channel is smaller than the width of the second rectangular parallelepiped cavity flow channel.

[0010] Furthermore, the columnar shape is cylindrical.

[0011] Furthermore, the bottom surface of the columnar inlet is arc-shaped.

[0012] The slit wind knife described in the utility model is a slit wind knife with a special internal structure, including an air inlet area, an air storage area and an air outlet area, the air inlet area is a cylindrical inlet closely connected with an arch bridge-shaped inlet distributor, the upper circular surface of the top of the cylindrical inlet is the air inlet, the bottom of the cylindrical inlet is closely connected with the arch bridge-shaped fluid distributor, the arch bridge-shaped fluid distributor is closely connected with the upper part of the air storage area, the upper part of the air storage area is a thick rectangular block (first rectangular block cavity flow channel), the flow channel below the thick rectangular block gradually shrinks to form a trapezoidal body (trapezoidal body cavity flow channel) in the middle of the air storage area, below the trapezoidal body in the middle of the air storage area is a thin rectangular block (second rectangular block cavity flow channel) in the lower part of the air storage area, the lower part of the thin rectangular block in the lower part of the air storage area is connected with the air outlet area, and the air outlet area is an extremely thin rectangular block (third rectangular block cavity flow channel).

[0013] In some embodiments, the number of the air inlet areas is set to be multiple, and they are arranged at intervals along the upper part of the air storage area to achieve the effect of increasing the air output.

[0014] In some embodiments, the diameter of the cylindrical inlet is smaller than the width of the arch-shaped fluid distributor.

[0015] In some embodiments, the curvature of the bottom surface of the cylindrical inlet is the same as the curvature of the upper portion of the arch-shaped fluid distributor, and the curvature is 0.0112.

[0016] In some embodiments, the width of the arch-shaped fluid distributor is the same as the width of the upper portion of the wind storage area.

[0017] In some embodiments, the length and width of the upper portion of the trapezoidal body are the same as the length and width of the upper portion of the air storage area, and the length and width of the lower portion of the trapezoidal body are the same as the length and width of the lower portion of the air storage area.

[0018] In some embodiments, the width of the outlet slit of the air outlet area can be adjusted to a predetermined size.

[0019] The advantages of the utility model are:

[0020] 1. Simple structure, easy processing and low cost;

[0021] 2. The arch bridge-shaped fluid distributor can evenly disperse the wind in the wind storage area;

[0022] 3. The trapezoidal body in the middle of the air storage area plays a drainage role, evenly transporting the wind from the air storage area to the air outlet area;

[0023] 4. The flow channel from the air storage area to the air outlet area suddenly narrows, forcing the outlet slit to discharge air evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0025] Figure 2 It is a side view of the utility model.

[0026] In the figure: 1, air inlet area; 101, cylindrical inlet; 102, arch bridge-shaped fluid distributor; 1011, air inlet; 1012, bottom of cylindrical inlet; 2, air storage area; 201, upper part of air storage area; 202, middle part of air storage area; 203, lower part of air storage area; 3, air outlet area; DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the features of the present invention in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, these descriptions are only exemplary and do not limit the scope of the present invention.

[0028] See also Figure 1 and 2 , a slit air knife, which includes an air inlet area, an air storage area and an air outlet area from top to bottom;

[0029] The air inlet area includes a columnar inlet, the bottom surface of the columnar inlet is connected to an arch-bridge-shaped fluid distributor, and the upper surface of the top of the columnar inlet is an air inlet; the air storage area is a cavity flow channel with a width gradually decreasing from top to bottom, the upper part of the cavity flow channel is a first rectangular cavity flow channel, the upper surface of the first rectangular cavity flow channel is provided with the arch-bridge-shaped fluid distributor, and the first rectangular cavity flow channel is connected to the arch-bridge-shaped fluid distributor; the lower surface of the first rectangular cavity flow channel is connected to the trapezoidal cavity flow channel, the lower surface of the trapezoidal cavity flow channel is connected to the second rectangular cavity flow channel, and the lower part of the second rectangular cavity flow channel is connected to the air outlet area; the air outlet area is a third rectangular cavity flow channel, and the width of the third rectangular cavity flow channel is less than that of the second rectangular cavity flow channel. The columnar shape is cylindrical, and the bottom surface of the columnar inlet is arc-shaped.

[0030] Specifically, the slit air knife described in the utility model is a slit air knife with a special internal structure, including an air inlet area 1, an air storage area 2 and an air outlet area 3, the air inlet area 1 is a cylindrical inlet 101 closely connected to an arch bridge-shaped fluid distributor 102, the upper circular surface of the top of the cylindrical inlet 101 is an air inlet 1011, the bottom 1012 of the cylindrical inlet is closely connected to the arch bridge-shaped fluid distributor 102, the arch bridge-shaped fluid distributor 102 is closely connected to the upper part of the air storage area 2, the The upper part 201 of the air storage area (i.e., the upper part of the cavity flow channel is the first rectangular cavity flow channel) is a thick rectangular block, and the flow channel below the thick rectangular block gradually shrinks to form a trapezoidal body in the middle part 202 of the air storage area (i.e., the trapezoidal cavity flow channel), and below the trapezoidal body in the middle part 202 of the air storage area is a thin rectangular block in the lower part 203 of the air storage area (i.e., the second rectangular cavity flow channel), and the thin rectangular block in the lower part 203 of the air storage area is connected to the air outlet area 3 (i.e., the third rectangular cavity flow channel) below, and the air outlet area 3 is an extremely thin rectangular block.

[0031] The number of the air inlet areas 1 is set to 4, which are arranged at equal intervals along the upper part of the air storage area 2. When the wind flows from the air inlet area 1 into the air storage area 2, the arch-shaped fluid distributors 102 arranged at equal intervals disperse the wind evenly in the air storage area 2. The upper part of the air storage area is divided into eight equal parts along the length direction, and the first, second, third and fourth air inlet areas are placed at one-eighth, three-eighths, five-eighths and seven-eighths respectively.

[0032] The diameter of the cylindrical inlet 101 of the air inlet area is smaller than the width of the arch bridge-shaped fluid distributor 102 .

[0033] The curvature of the bottom surface of the cylindrical inlet 101 is the same as the curvature of the upper portion of the arch bridge-shaped fluid distributor 102, and the curvature is 0.0112.

[0034] The width of the arch bridge-shaped fluid distributor 102 is the same as the width of the upper portion 201 of the air storage area.

[0035] The length and width of the upper portion of the trapezoidal body 202 are the same as those of the upper portion 201 of the air storage area, and the length and width of the lower portion of the trapezoidal body 202 are the same as those of the lower portion 203 of the air storage area.

[0036] The flow passage from the air storage area 2 to the air outlet area 3 suddenly narrows to increase the resistance, forcing the outlet slit to discharge air evenly.

[0037] The width of the outlet slit of the air outlet area can be adjusted to a predetermined size.

[0038] The above description is only used to illustrate the preferred implementation of the utility model, but the protection scope of the utility model is not limited thereto. Therefore, all equivalent changes, modifications, improvements, etc. made according to the application scope and principles of the utility model are within the protection scope of the utility model.

Claims

1. A slit air knife, characterized in that: It includes the air inlet area, air storage area and air outlet area from top to bottom; The air inlet area includes a columnar inlet, the bottom surface of the columnar inlet is connected to an arch bridge-shaped fluid distributor, and the upper surface of the top of the columnar inlet is an air inlet; The air storage area is a cavity flow channel with a width that gradually decreases from top to bottom. The upper part of the cavity flow channel is a first rectangular cavity flow channel. The upper surface of the first rectangular cavity flow channel is provided with the arch bridge-shaped fluid distributor, and the first rectangular cavity flow channel is connected to the arch bridge-shaped fluid distributor; the lower surface of the first rectangular cavity flow channel is connected to the trapezoidal cavity flow channel, and the lower surface of the trapezoidal cavity flow channel is connected to the second rectangular cavity flow channel, and the lower part of the second rectangular cavity flow channel is connected to the air outlet area; The air outlet area is a third rectangular parallelepiped cavity flow channel, and the width of the third rectangular parallelepiped cavity flow channel is smaller than the width of the second rectangular parallelepiped cavity flow channel.

2. The slit air knife according to claim 1, characterized in that: The columnar shape is cylindrical.

3. The slit air knife according to claim 1, characterized in that: The bottom surface of the columnar inlet is arc-shaped.

4. The slit air knife according to claim 1, characterized in that: The number of the air inlet areas is set to be multiple, and they are arranged at intervals along the upper part of the air storage area.

5. The slit air knife according to claim 1, characterized in that: The diameter of the columnar inlet is smaller than the width of the arch-shaped fluid distributor.

6. The slit air knife according to claim 1, characterized in that: The curvature of the bottom surface of the columnar inlet is the same as the curvature of the upper part of the arch bridge-shaped fluid distributor.

7. The slit air knife according to claim 1, characterized in that: The width of the arch bridge-shaped fluid distributor is the same as the width of the upper part of the air storage area.

8. The slit air knife according to claim 1, characterized in that: The upper portion of the trapezoidal body is the same as the upper portion of the wind storage area, and the lower portion of the trapezoidal body is the same in length and width as the lower portion of the wind storage area.

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