A multi-splitter blade device

Abstract

The utility model relates to the field of extrusion cooling discloses a kind of one drags many air knives, including several air pipes, several The air pipe is all arranged above installation flap, the inside of installation flap is provided with conveyor belt, the surface of the air pipe is fixed with contraction air nozzle, the section of contraction air nozzle is inverted triangular slit, the side of installation flap is provided with two centrifugal fans, the one end of centrifugal fan air outlet pipe is fixedly connected with connecting pipe, the connecting pipe is provided with several delivery pipes, one end of the delivery pipe is fixedly communicated with the one end of air pipe.In the utility model, when a large amount of airflow passes through the contraction air nozzle, the width gradually shrinks from top to bottom, and the airflow forms a strong downward air pressure at the outlet, thereby stably pressing the material strip on the top surface of the conveyor belt, enhancing the position stability of the material strip during the cooling process.

Description

Technical Field

[0001] This utility model relates to the technical field of extrusion cooling, specifically to a multi-air knife device. Background Technology

[0002] The high-temperature plastic strip produced from the extruder falls onto a conveyor belt, which then transports it horizontally to the next stage. During this process, a specialized cooling system uniformly cools the moving strip, solidifying and shaping it to ensure stable shape and dimensions. The fully cooled strip is then precisely guided to the pelletizer inlet.

[0003] In the existing technology, axial flow fans are directly installed above the conveyor belt to cool the material strips on the conveyor belt. However, this still has the following disadvantages: when the axial flow fan is cooling the material strips on the conveyor belt, the airflow generated by the axial flow fan is relatively dispersed. Due to insufficient air pressure, the material strips may move on the top surface of the conveyor belt. Utility Model Content

[0004] The purpose of this invention is to provide a multi-air knife device to solve the problem that the airflow generated by the axial flow fan is relatively dispersed, which may cause the material strip to move on the top surface of the conveyor belt due to insufficient air pressure.

[0005] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a multi-air knife device, comprising several air ducts, all of which are arranged above a mounting baffle plate. A conveyor belt is arranged inside the mounting baffle plate. A shrink nozzle is fixed on the surface of each air duct. The shrink nozzle has a cross-section that is an inverted triangular slit. Two centrifugal fans are arranged on one side of the mounting baffle plate. One end of the outlet duct of each centrifugal fan is fixedly connected to a connecting pipe. Several conveying pipes are arranged on the connecting pipe. One end of each conveying pipe is fixedly connected to one end of the air duct.

[0006] Preferably, a plurality of fixed folding plates are fixed on one side of the mounting folding plate, a lifting plate is slidably arranged on the fixed folding plate, a sliding opening is opened on one side of the fixed folding plate, and sliding grooves are opened on both sides of the lifting plate. The sliding opening and the sliding groove are slidably engaged. A long bolt is rotatably inserted into the fixed folding plate, and the long bolt is threadedly connected to the lifting plate.

[0007] Preferably, the fixed folding plate has two positioning posts inside, and the top surface of the lifting plate has two positioning holes, with the positioning posts slidably inserted into the positioning holes.

[0008] Preferably, the centrifugal fan is fixed to a base at its bottom, and casters are provided at the four corners of the base.

[0009] Preferably, the surface of the connecting pipe is fixedly connected to a plurality of telescopic hoses, and the telescopic hoses are fixedly connected to the delivery pipe.

[0010] Preferably, support columns are fixed at the four corners of the bottom surface of the mounting plate, and anti-slip pads are fixed at the bottom ends of the support columns.

[0011] Compared with existing technologies, a multi-pole air knife device using the above-mentioned technical solution has the following advantages:

[0012] 1. When a large amount of airflow passes through the converging nozzle, its width gradually narrows from top to bottom, creating a strong downward air pressure at the outlet, which stably presses the material strip against the top surface of the conveyor belt, enhancing the positional stability of the material strip during the cooling process.

[0013] 2. By rotating the long bolt, the operator utilizes the threaded engagement between the bolt and the lifting plate to cause the lifting plate to slide up and down along the inside of the fixed folding plate. As the lifting plate moves, the positioning hole slides synchronously along the surface of the positioning column, thereby adjusting the height of the conveying pipe and changing the vertical position of the air duct and the contraction nozzle relative to the conveyor belt, thus adjusting the air pressure on the material strip.

[0014] 3. When the centrifugal fan is in operation, it can be pushed away from the installation baffle by the operator. During the movement, the casters roll along the ground, and the telescopic hose gradually lengthens, increasing the distance between the conveyor belt and the centrifugal fan. This prevents the centrifugal fan from repeatedly drawing in hot air emitted during the cooling of the material strips, further improving the cooling effect on the material strips. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0016] Figure 2 This is a breakdown diagram of an embodiment.

[0017] Figure 3 This is a schematic diagram showing the disassembled parts of the air duct and retractable air nozzle in an embodiment.

[0018] Figure 4 This is a schematic diagram showing the disassembled positioning column and lifting plate in an embodiment.

[0019] In the diagram: 1. Air duct; 2. Mounting baffle; 3. Conveyor belt; 4. Shrink nozzle; 5. Centrifugal fan; 6. Connecting pipe; 7. Conveying pipe; 8. Base; 9. Casters; 10. Telescopic hose; 11. Fixed baffle; 12. Lifting plate; 13. Sliding port; 14. Sliding groove; 15. Long bolt; 16. Positioning post; 17. Positioning hole; 18. Support post; 19. Anti-slip pad. Detailed Implementation

[0020] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1-3 As shown, a multi-air knife device includes several air ducts 1, all of which are arranged above a mounting baffle 2. The device is characterized in that a conveyor belt 3 is arranged inside the mounting baffle 2, and a shrink nozzle 4 is fixed on the surface of the air duct 1. The shrink nozzle 4 has a cross-section of an inverted triangular slit. Two centrifugal fans 5 are arranged on one side of the mounting baffle 2. One end of the air outlet duct 1 of the centrifugal fans 5 is fixedly connected to a connecting pipe 6. Several conveying pipes 7 are arranged on the connecting pipe 6. One end of the conveying pipe 7 is fixedly connected to one end of the air duct 1. Support columns 18 are fixed at the four corners of the bottom surface of the mounting baffle 2, and anti-slip pads 19 are fixed at the bottom of the support columns 18.

[0022] During operation, the extruded strip falls onto the top surface of conveyor belt 3, which moves laterally. Centrifugal fan 5 draws air into the system and forces it into connecting pipe 6, then through conveying pipe 7 into air duct 1. Airflow from air duct 1 is blown downwards through constricting nozzle 4. Since the strip is directly below air duct 1 and constricting nozzle 4, it is rapidly cooled as it passes through this area.

[0023] When a large amount of airflow passes through the constricting nozzle 4, its width gradually narrows from top to bottom, creating a strong downward air pressure at the outlet. This presses the material strip stably against the top surface of the conveyor belt 3, enhancing the positional stability of the material strip during the cooling process.

[0024] like Figure 2 and Figure 4 As shown, several fixed folding plates 11 are fixed on one side of the mounting folding plate 2. A lifting plate 12 is slidably mounted on the fixed folding plate 11. A sliding opening 13 is opened on one side of the fixed folding plate 11. Sliding grooves 14 are opened on both sides of the lifting plate 12. The sliding opening 13 and the sliding grooves 14 are slidably engaged. A long bolt 15 is rotatably inserted into the fixed folding plate 11. The long bolt 15 is threadedly connected to the lifting plate 12. Two positioning posts 16 are fixed inside the fixed folding plate 11. Two positioning holes 17 are opened on the top surface of the lifting plate 12. The positioning posts 16 are slidably inserted into the positioning holes 17.

[0025] During use, the operator rotates the long bolt 15, which, through its threaded engagement with the lifting plate 12, causes the lifting plate 12 to slide up and down along the inside of the fixed folding plate 11. As the lifting plate 12 moves, the positioning hole 17 slides synchronously along the surface of the positioning post 16, thereby adjusting the height of the conveying pipe 7 and changing the vertical position of the air duct 1 and the contraction nozzle 4 relative to the conveyor belt 3, thus adjusting the wind pressure on the material strip.

[0026] like Figure 3As shown, a base 8 is fixed to the bottom of the centrifugal fan 5, and casters 9 are respectively provided at the four corners of the bottom surface of the base 8. Several telescopic hoses 10 are fixedly connected to the surface of the connecting pipe 6, and the telescopic hoses 10 are fixedly connected to the conveying pipe 7.

[0027] During use, the centrifugal fan 5 can be pushed away from the mounting plate 2 by the operator while it is in operation. During the movement, the casters 9 roll along the ground, and the telescopic hose 10 gradually lengthens, increasing the distance between the conveyor belt 3 and the centrifugal fan 5. This prevents the centrifugal fan 5 from repeatedly drawing in hot air emitted during the cooling of the material strips, further improving the cooling effect on the material strips.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-pole air knife device, comprising a plurality of air ducts (1), wherein all of the plurality of air ducts (1) are arranged above a mounting baffle (2), characterized in that, The mounting plate (2) is equipped with a conveyor belt (3) inside. The surface of the air duct (1) is fixed with a shrink nozzle (4). The shrink nozzle (4) has a cross-section of an inverted triangular slit. Two centrifugal fans (5) are provided on one side of the mounting plate (2). One end of the outlet pipe (1) of the centrifugal fan (5) is fixedly connected to a connecting pipe (6). Several conveying pipes (7) are provided on the connecting pipe (6). One end of the conveying pipe (7) is fixedly connected to one end of the air duct (1).

2. The multi-ply air knife device according to claim 1, characterized in that: A plurality of fixed folding plates (11) are fixed on one side of the mounting folding plate (2). A lifting plate (12) is slidably disposed on the fixed folding plate (11). A sliding opening (13) is provided on one side of the fixed folding plate (11). Sliding grooves (14) are provided on both sides of the lifting plate (12). The sliding opening (13) and the sliding groove (14) are slidably engaged. A long bolt (15) is rotatably inserted on the fixed folding plate (11). The long bolt (15) is threadedly connected to the lifting plate (12).

3. The multi-ply air knife device according to claim 2, characterized in that: The fixed folding plate (11) has two positioning posts (16) fixed inside, and the top surface of the lifting plate (12) has two positioning holes (17). The positioning posts (16) and the positioning holes (17) are slidably inserted into each other.

4. The multi-ply air knife device according to claim 1, characterized in that: The centrifugal fan (5) is fixed to a base (8) at its bottom, and casters (9) are provided at the four corners of the bottom surface of the base (8).

5. The multi-ply air knife device according to claim 1, characterized in that: The surface of the connecting pipe (6) is fixedly connected to several telescopic hoses (10), and the telescopic hoses (10) are fixedly connected to the conveying pipe (7).

6. The multi-ply air knife device according to claim 1, characterized in that: The four corners of the bottom surface of the mounting plate (2) are respectively fixed with support columns (18), and the bottom end of the support column (18) is fixed with an anti-slip pad (19).

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