Blowing pipe for forming air curtain

Abstract

The utility model relates to a blowpipe for forming an air curtain, and belongs to the technical field of devices for air curtains. A blowpipe for forming an air curtain comprises a blowpipe body provided with an air outlet, and is characterized in that a duckbilled structure is mounted on the pipe wall of the blowpipe body; the duckbilled structure comprises an upper plate, a lower plate, a front plate and sealing plates at the two ends, the upper plate, the lower plate and the front plate are spliced in a trapezoidal structure, and an air curtain air opening is formed in the front plate; flow guide plates are mounted at the splicing part of the upper plate and the front plate and the splicing part of the lower plate and the front plate; a wind shielding plate is arranged at the air outlet and located in the air blowing pipe body, and the wind shielding plate is fixed to the inner wall of the air blowing pipe body through a supporting plate. The blowpipe designed by the utility model has the advantages of stable strength of a formed air curtain and long distance.

Description

Technical Field

[0001] This utility model relates to a blower for forming an air curtain, belonging to the technical field of air curtain devices. Background Technology

[0002] The burning of agricultural waste and straw has always been a major concern in agriculture. To avoid fires and environmental problems caused by burning agricultural waste and straw, a solution has been to place the agricultural waste and straw into a specially designed incineration device. For example, the applicant's patent application titled "A Harmless Treatment Device for Agricultural and Forestry Waste" describes a device that places agricultural waste and straw into a frame for burning. An air curtain is formed by air ducts at the top of the frame. The air curtain flows to the opposite side, encounters a side plate, and then deflects back onto the burning material. This provides oxygen for combustion while also returning dust, particles, and smoke from incomplete combustion to the bottom of the inner cavity for further combustion, preventing the spread of smoke and dust and reducing the environmental harm caused by burning. In this design, the design of the air ducts has a significant impact on the formation of the air curtain. Utility Model Content

[0003] In order to better form an air curtain and increase its extension distance, a blower tube for forming an air curtain is provided.

[0004] This utility model solves the above-mentioned technical problems through the following technical solution:

[0005] A blower duct for forming an air curtain includes a blower duct body with an air outlet. The blower duct body is characterized by having a duckbill structure installed on its wall. The duckbill structure includes an upper plate, a lower plate, a front plate, and end plates at both ends. The upper plate, lower plate, and front plate are joined in a trapezoidal structure. An air curtain vent is provided on the front plate. Guide plates are installed at the joints between the upper plate and the front plate, and at the joints between the lower plate and the front plate. At the air outlet, located within the blower duct body, a wind shield is provided, which is fixed to the inner wall of the blower duct body by a support plate.

[0006] The advantages of the above technical solution are as follows: Because the combustion zone controlled by the air curtain is relatively long, the blower pipe used is also relatively long. When the air enters the blower pipe, the wind force is relatively strong initially, but weakens as the distance in the pipe increases. This results in different air curtain intensities at different locations. In this application, to ensure that the air curtain intensity is basically the same, a design combining the blower pipe body and the duckbill structure is adopted. The air first fills the blower pipe body and then enters the duckbill structure through the air outlet of the blower pipe body, forming the air curtain. In this design, the air in the duckbill structure is easily blocked by the front panel, weakening the wind force. Therefore, guide plates are set above and below the front panel to reduce the front panel's obstruction of the wind and improve the air curtain intensity. The purpose of the wind shield is to allow the air to first fill the blower pipe body and then enter the duckbill structure through the air outlet via the gap between the wind shield and the blower pipe body.

[0007] Based on the above technical solution, this application makes the following improvements and enhancements to the above technical solution:

[0008] Furthermore, the guide plate is an arc-shaped plate.

[0009] The beneficial effect of the above-mentioned technical features in this application is that the surface of the arc-shaped plate helps to disperse the force directly generated by the wind, further reducing wind resistance.

[0010] Furthermore, the air outlet consists of multiple circular holes arranged in a line on the blower tube body; the spacing between adjacent circular holes decreases from the air inlet end to the end end.

[0011] The beneficial effects of the above-mentioned technical features in this application are: allowing the air to enter the duckbill structure in segments, and setting the round holes from the air inlet end of the blower pipe to the end from sparse to dense, ensuring that the pressure at each position in the duckbill structure is basically the same, and making the air curtain intensity generated in each segment consistent.

[0012] Furthermore, the air outlet is a long slit, the long slit is trapezoidal, and the upper base of the trapezoid is located at the inlet end of the air blower.

[0013] The beneficial effect of the above-mentioned technical features in this application is that the design is also intended to ensure that the pressure at each position in the duckbill structure is basically the same, so that the wind curtain intensity generated by each section is consistent.

[0014] Furthermore, the air curtain vents on the front panel are multiple evenly distributed elliptical holes.

[0015] The beneficial effect of the above-mentioned technical features in this application is that the wind intensity at the air curtain outlet position is increased through the above design, thereby extending the length of the air curtain.

[0016] Furthermore, the upper and lower plates have extended sections; the front plate is located at the junction of the upper and lower plates and the extended sections. The distance between the ends of the extended sections of the upper and lower plates is equal to the width of the air curtain vent.

[0017] The beneficial effect of the above-mentioned technical features in this application is that the extension plate is designed to enable the wind ejected from the air curtain vent to form a converging effect, thereby increasing the distance and intensity of the wind formation.

[0018] Furthermore, the blower tube body is a round tube, a square tube, a trapezoidal tube, or a triangular tube.

[0019] Furthermore, a connecting flange is installed at the air inlet end of the blower duct body; the bolt holes of the connecting flange are elongated holes; a fixing plate is installed on the blower duct body, and the fixing plate is provided with arc-shaped mounting holes.

[0020] The beneficial effects of the above-mentioned technical features in this application are: the connecting flange facilitates the connection between the air duct and the fan, and the flange with long bolt holes makes it easy to adjust the air outlet angle of the duckbill structure.

[0021] The air blowing duct designed in this application for forming an air curtain has the advantage of improving the structure of the air outlet on the air blowing duct body so that the air can be filled with air and the air intensity at each air outlet is equal. In this way, the wind pressure generated at each position inside the duckbill structure is the same, which can generate a considerable wind pressure at the air outlet of the air curtain, and the strength of the air curtain at each position is also the same. The designed guide plate further reduces the obstruction of the front plate to the wind, and the extension section further concentrates the wind, ultimately achieving the effect of increasing the distance of the air curtain. Attached Figure Description

[0022] Figure 1 This application relates to a three-dimensional structural schematic diagram of a blower tube for forming an air curtain;

[0023] Figure 2 This is a cross-sectional view of the duckbill structure;

[0024] Figure 3 A schematic diagram of the installation structure of the wind shield and the blower duct body;

[0025] Figure 4 A structural schematic diagram of the windbreak panel and support panel;

[0026] Figure 5 A schematic diagram of the air outlet duct body with a circular hole structure;

[0027] Figure 6 A schematic diagram of the structure of the air outlet duct body with a long slit;

[0028] Figure 7This is a three-dimensional structural diagram of an air duct with elongation used to form an air curtain.

[0029] The attached diagrams are labeled as follows: air duct body - 1, duckbill structure - 2, connecting flange - 3.

[0030] Air outlet-101, support plate-102, wind shield-103;

[0031] Upper plate-201, lower plate-202, front plate-203, guide plate-204, extension section-205. Detailed Implementation

[0032] The following embodiments, in conjunction with the accompanying drawings, are merely for illustrating the technical solutions described in the claims and are not intended to limit the scope of protection of the claims.

[0033] Combined with appendix Figure 1-7 A blower duct for forming an air curtain includes a blower duct body 1 with an air outlet 101. A duckbill structure 2 is installed on the wall of the blower duct body 1. The duckbill structure 2 includes an upper plate 201, a lower plate 202, a front plate 203, and end plates. The upper plate 201, lower plate 202, and front plate 203 are connected in a trapezoidal structure. An air curtain vent is provided on the front plate 203. The upper plate 201 and the front plate... A guide plate 204 is installed at the splice of 203 and at the splice of the lower plate 202 and the front plate 203; at the air outlet 101, located inside the blower pipe body 1, a wind shield 103 is provided. The wind shield 103 is fixed to the inner wall of the blower pipe body 1 by a support plate 102, and the gap between the wind shield 103 and the inner wall of the blower pipe body 1 is 1mm; the wind shield can be set in multiple sections; the support plate is an arc-shaped plate, or a support column can be used instead of a support plate.

[0034] Based on the above technical solution, this application makes the following improvements and enhancements:

[0035] The guide plate 204 is an arc-shaped plate.

[0036] Two designs were made for the air outlet 101. The first one is as follows: Figure 3 Multiple circular holes are arranged in a line on the blower tube body 1; the spacing between two adjacent circular holes from the air inlet end to the end end decreases, and the diameter of the blower hole is no more than 5mm.

[0037] The second type, such as Figure 4 The air outlet 101 is a long strip, which is trapezoidal, and the upper base of the trapezoid is located at the inlet end of the air blower. The width of the long strip is no more than 5mm, that is, the lower base of the trapezoid is no more than 5mm.

[0038] The air curtain vents on the front panel 203 are multiple evenly distributed elliptical holes.

[0039] In order to better form an air curtain and better concentrate wind energy at the air curtain outlet, such as Figure 5 As shown, both the upper plate 201 and the lower plate 202 have an extension section 205; the front plate 203 is located at the junction of the upper plate, the lower plate and the extension section 205; the distance between the ends of the extension sections of the upper and lower plates is equal to the width of the air curtain vent.

[0040] In addition, the blower body is a round tube, square tube or trapezoidal tube; a connecting flange 3 is installed at the air inlet end of the blower body 1; the bolt holes of the connecting flange 3 are elongated holes; a fixing plate is installed on the blower body 1, and an arc-shaped mounting hole is provided on the fixing plate.

[0041] During installation, the blower duct body 1 is connected to the fan inlet duct via the connecting flange 3, and the angle of the duckbill structure 2 is adjusted according to the site. The other end of the blower duct body is sealed by a sealing plate. When it is necessary to extend the blower duct, it can also be extended via the mounting flange. During operation, due to the design of the air outlet, the air will first fill the blower duct body, and of course, a small amount of air will also enter the duckbill structure. After the blower duct body is completely filled, the duckbill structure will be further filled. In addition, the air outlet is designed to be relatively more numerous at the end, with a larger air outlet area. This allows the air curtain outlet of the duckbill structure to blow out an air curtain of the same pressure, and the distance of the air curtain formation is also increased.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blower pipe for forming an air curtain, comprising a blower pipe body (1) having an air outlet (101) disposed thereon, characterized in that, A duckbill structure (2) is installed on the pipe wall of the blower pipe body (1); the duckbill structure (2) includes an upper plate (201), a lower plate (202), a front plate (203) and sealing plates at both ends. The upper plate (201), the lower plate (202) and the front plate (203) are spliced ​​in a trapezoidal structure. An air curtain vent is provided on the front plate (203). A guide plate (204) is installed at the splice of the upper plate (201) and the front plate (203) and at the splice of the lower plate (202) and the front plate (203). At the air outlet (101), located inside the blower pipe body (1), a wind shield (103) is provided. The wind shield (103) is fixed to the inner wall of the blower pipe body (1) by a support plate (102).

2. The air blowing pipe for forming an air curtain according to claim 1, characterized in that, The guide plate (204) is an arc-shaped plate.

3. The air blowing pipe for forming an air curtain according to claim 1, characterized in that, The air outlet (101) is a plurality of round holes arranged in a line on the blower tube body (1).

4. The air blowing pipe for forming an air curtain according to claim 3, characterized in that, The circular holes are arranged in a decreasing pattern from the air inlet end to the outlet end.

5. The air blowing pipe for forming an air curtain according to claim 1, characterized in that, The air outlet (101) is a long strip, which is trapezoidal, and the upper base of the trapezoid is located at the inlet end of the air blower.

6. The air blowing pipe for forming an air curtain according to claim 1, characterized in that, The air curtain vents on the front panel (203) are multiple evenly distributed elliptical holes.

7. The air blowing pipe for forming an air curtain according to claim 1, characterized in that, The upper plate (201) and the lower plate (202) both have extension sections (205); the front plate (203) is located at the junction of the upper plate, the lower plate and the extension section (205).

8. The air blowing pipe for forming an air curtain according to claim 7, characterized in that, The distance between the ends of the upper and lower plate extensions is equal to the width of the air curtain vent.

9. The air blowing pipe for forming an air curtain according to claim 1, characterized in that, The blower tube body is round, square, trapezoidal, or triangular.

10. The air blowing pipe for forming an air curtain according to claim 1, characterized in that, The air inlet end of the blower body (1) is fitted with a connecting flange (3); the bolt holes of the connecting flange (3) are elongated holes; a fixing plate is installed on the blower body (1), and an arc-shaped mounting hole is provided on the fixing plate.

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