Air knife assembly

Abstract

The utility model discloses a wind knife subassembly, including setting in the wind knife cover plate of wind knife body one end, the air outlet recess that opens in wind knife body one end and setting in the air pipe joint of wind knife body one end, wind knife body one end has installed the groove, the one end fixed mounting of installed groove has the air -guiding shell, the air -guiding shell is connected with the air outlet recess through -going, the inside rotatory connection of air -guiding shell has the mainboard, the inside symmetrical rotatory connection of air -guiding shell has the vice board, and the mainboard is located in the middle of multiple vice boards, and the mainboard and vice board top all fixed mounting have the rotating shaft, the utility model discloses through adjusting the airflow path of mainboard and vice board inclination angle change, rotates the rotating handle and drives the rotating shaft rotation, through connecting rod and connecting plate linkage, make the mainboard and symmetrical vice board synchronous rotation, can flexible adjustment air outlet recess's air -out direction, need not to replace wind knife subassembly, can satisfy the blowing demand of different position, angle, adapts the diversified operation scene of cleaning, cooling etc.

Description

Technical Field

[0001] This utility model relates to the field of air knife technology, specifically to air knife components. Background Technology

[0002] An air knife is an industrial device used for blowing air to remove water, dust, etc. Compressed air enters the air knife and is blown out at high speed as a thin sheet of air. Through the Coanda effect and the special geometry of the air knife, ambient air can be drawn in to form a thin, high-intensity, large-airflow impact air curtain.

[0003] According to the air knife assembly disclosed in announcement number CN211759083U, this air knife assembly includes an air knife, a connecting spring, an air pipe connector, and an air knife cover plate. Two air knives are movably connected by the connecting spring. Rectangular grooves are provided on the opposite surfaces of the air knives for conveying the material strip. An air outlet slope is provided on the side of each air knife, and an air-gathering groove is provided on the air outlet slope. An air pipe connector is installed at the opening of the air-gathering groove. The air outlet slope encloses the air knife cover plate, and the bottom surface of the air knife cover plate has an air outlet groove that mates with the air-gathering groove. The air outlet groove is angled like the air outlet slope and points towards the material strip. Through this method, the present invention has a compact structure and stable operation. The two air knives are elastically connected by the connecting spring, avoiding damage to the material strip. The air outlet groove points towards the material strip, saving weight while blowing off liquid droplets on the material strip, preventing excess flux from contaminating the product.

[0004] The above-mentioned device is elastically connected by a connecting spring, which can avoid damage to the material belt. According to the instruction manual and the attached drawings, the air knife discharges air through the air outlet groove, and the air outlet of the air outlet groove is fixed and the direction of air discharge cannot be adjusted. Utility Model Content

[0005] The purpose of this utility model is to provide an air knife assembly to solve the problem that the air knife discharges air through the air outlet groove, but the air outlet of the air outlet groove is fixed and the air discharge direction cannot be adjusted.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an air knife assembly, including an air knife cover plate disposed at one end of the air knife body, an air outlet groove opened at one end of the air knife body, and an air pipe connector disposed at one end of the air knife body. An installation groove is opened at one end of the air knife body, and an air guide shell is fixedly installed at one end of the installation groove. The air guide shell is connected to the air outlet groove. A main board is rotatably connected inside the air guide shell, and secondary plates are symmetrically rotatably connected inside the air guide shell. The main board is located in the middle of multiple sets of secondary plates. A rotating shaft is fixedly installed at the top of both the main board and the secondary plates. A rotating handle is rotatably connected to the top of the air guide shell, and the rotating handle is fixedly installed to the rotating shaft.

[0007] As a further embodiment of this utility model: a cavity is provided at the top of the air guide shell, a connecting plate is slidably connected inside the cavity, a connecting rod is fixedly installed at the top of both the main plate and the sub-plate, and the connecting rod is fixedly installed on the outer circumference of the rotating shaft, with one end of the connecting rod rotatably connected to the connecting plate.

[0008] As a further embodiment of this utility model: the top end of the air guide shell is rotatably connected to a limiting gear, the limiting gear is fixedly installed on the outer circumference of the rotating shaft, the top end of the air guide shell is fixedly installed with an installation block, and the installation block is slidably connected to a limiting rod, the limiting rod being adapted to the tooth groove of the limiting gear.

[0009] As a further embodiment of this utility model: a reset spring is fixedly installed inside the mounting block, and one end of the reset spring is fixedly installed with the limiting rod. A connecting rod is slidably connected to the top of the mounting block, and the connecting rod is fixedly installed with the limiting rod.

[0010] As a further improvement of this utility model: a guide groove is provided inside the cavity, and a guide rod is fixedly installed at the bottom of the connecting plate, and the guide rod is adapted to the guide groove.

[0011] As a further embodiment of this utility model: a U-shaped block is fixedly installed at the bottom of the rotating shaft, and a fixing groove is opened at both ends of the main plate and the sub-plate, and the fixing groove is adapted to the U-shaped block. A fixing block is fixedly installed inside the fixing groove, and the fixing block is adapted to the U-shaped block. A threaded hole is opened at one end of both the fixing block and the U-shaped block, and a threaded rod is threadedly connected to the threaded hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model changes the airflow path by adjusting the tilt angle between the main board and the sub-board. Turning the handle drives the rotating shaft to rotate, which is linked with the connecting rod and the connecting plate, so that the main board and the symmetrical sub-board rotate synchronously. The air outlet direction of the air outlet groove can be flexibly adjusted. Without replacing the air knife assembly, it can meet the air blowing needs of different positions and angles, adapt to diverse operation scenarios such as cleaning and cooling, and improve the versatility of the equipment.

[0014] The adjustment process of this utility model only requires three steps: pushing the connecting rod, rotating the handle, and releasing the connecting rod. Pushing the connecting rod releases the limit lock, rotating the handle adjusts the direction, and releasing the connecting rod automatically drives the limit rod to lock after the reset spring automatically releases the limit lock. No complicated tools are required throughout the process, and the connecting plate moves smoothly through the guide rod and guide groove, ensuring a smooth adjustment process, reducing the skill requirements of the operator, and allowing a single person to quickly complete the direction adjustment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the wind knife body in this utility model;

[0017] Figure 3 This is a schematic diagram of the air guide shell in this utility model;

[0018] Figure 4 This is a utility model Figure 3 A magnified schematic diagram of the local structure at point A;

[0019] Figure 5 This is a schematic diagram of the top cross-sectional structure of the air guide shell in this utility model;

[0020] Figure 6 This is a schematic diagram of the unfolded structure of the motherboard and the U-shaped block in this utility model.

[0021] In the diagram: 1. Air knife body; 2. Air knife cover plate; 3. Air outlet groove; 5. Mounting groove; 6. Air guide shell; 7. Main board; 8. Sub-board; 9. Rotating shaft; 10. Cavity; 11. Connecting plate; 12. Connecting rod; 13. Rotating handle; 14. Limiting gear; 15. Mounting block; 16. Limiting rod; 17. Return spring; 18. Connecting rod; 19. Guide rod; 20. Guide groove; 901. Fixing groove; 902. Fixing block; 903. U-shaped block; 904. Threaded hole; 905. Threaded rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0024] Reference Figures 1 to 6 In this embodiment of the utility model, the air knife assembly includes an air knife cover plate 2 disposed at one end of the air knife body 1, an air outlet groove 3 opened at one end of the air knife body 1, and an air pipe connector 4 disposed at one end of the air knife body 1. An installation groove 5 is opened at one end of the air knife body 1, and an air guide shell 6 is fixedly installed at one end of the installation groove 5. The air guide shell 6 is connected to the air outlet groove 3. A main plate 7 is rotatably connected inside the air guide shell 6, and secondary plates 8 are symmetrically rotatably connected inside the air guide shell 6. The main plate 7 is positioned... In the middle of multiple sets of sub-plates 8, the top of the main plate 7 and the sub-plate 8 are both fixedly installed with a rotating shaft 9. The top of the air guide shell 6 is rotatably connected with a rotating handle 13, and the rotating handle 13 is fixedly installed with the rotating shaft 9. The top of the air guide shell 6 has a cavity 10, and a connecting plate 11 is slidably connected inside the cavity 10. The top of the main plate 7 and the sub-plate 8 are both fixedly installed with a connecting rod 12, and the connecting rod 12 is fixedly installed on the outer periphery of the rotating shaft 9. One end of the connecting rod 12 is rotatably connected to the connecting plate 11.

[0025] The above-mentioned scheme is adopted: the air knife body 1, the air outlet groove 3, the air pipe connector 4, and the air knife cover plate 2 are all prior art referenced in the prior art documents and are not described in detail in this application. The mounting groove 5 is opened at one end of the air knife body 1, and the groove wall provides installation space for the air guide shell 6. The air guide shell 6 is made of aluminum alloy and is fixed to one end of the mounting groove 5 by bolts. It is hollow inside and communicates with the air outlet groove 3 to ensure smooth airflow. The main plate 7 and the secondary plate 8 are both made of wear-resistant alloy and the surface is polished to reduce wind resistance. The main plate 7 is rotatably connected to the inside of the air guide shell 6 through the bearing. The secondary plates 8 are symmetrically distributed on both sides of the main plate 7 and rotatably connected to the air guide shell 6. Multiple sets of rotating shafts 9 are made of high-strength stainless steel and are welded and fixed to the main plate 7 and the secondary plate 8 respectively. The other end passes through the top of the air guide shell 6. The rotating handle 13 is made of engineering plastic wrapped around a metal core to ensure both anti-slip feel and strength. The top of the rotating shaft 9 corresponding to plate 7 is fixedly connected. Cavity 10 is opened at the top of air guide shell 6 with smooth inner wall. Connecting plate 11 is made of alloy material and is adapted to slide with it. Connecting rod 12 is made of stainless steel. One end is welded and fixed to the outer circumference of rotating shaft 9, and the other end is rotatably connected to connecting plate 11 through rotating shaft. The advantage of this structure is that rotating the handle 13 drives the rotating shaft 9 of main plate 7 to rotate. Through the linkage between connecting rod 12 and connecting plate 11, the rotating shaft 9 of secondary plate 8 rotates synchronously, realizing the coordinated angle adjustment of main plate 7 and multiple sets of secondary plates 8, thereby changing the cross section of airflow channel inside air guide shell 6, accurately controlling the air outlet direction and wind speed, and adapting to different blowing dust removal or drying needs. The sliding of connecting plate 11 ensures the coordinated movement of each set of connecting rods 12, ensuring the synchronicity of adjustment of main plate 7 and secondary plate 8, and avoiding airflow turbulence caused by the offset of a single set of plates.

[0026] Reference Figures 1 to 6 The top end of the air guide shell 6 is rotatably connected to a limiting gear 14, which is fixedly installed on the outer periphery of the rotating shaft 9. The top end of the air guide shell 6 is fixedly installed with an installation block 15, and a limiting rod 16 is slidably connected inside the installation block 15. The limiting rod 16 is adapted to the tooth groove of the limiting gear 14. A return spring 17 is fixedly installed inside the installation block 15, and one end of the return spring 17 is fixedly installed with the limiting rod 16. The top end of the installation block 15 is slidably connected to a connecting rod 18, which is fixedly installed with the limiting rod 16.

[0027] The above scheme is adopted: the limiting gear 14, which is rotatably connected to the top of the air guide shell 6, is made of high-strength alloy steel and is fixed to the outer periphery of the rotating shaft 9 by a key connection; the mounting block 15 is made of alloy material and is welded and fixed to the top of the air guide shell 6; the internally sliding limiting rod 16 is made of wear-resistant alloy material (one end of which is hardened at the contact point with the tooth groove of the limiting gear 14), and its size is precisely matched with the tooth groove of the limiting gear 14; the return spring 17 is made of high-elasticity spring steel (stable elasticity and fatigue resistance), one end of which is welded to the inside of the mounting block 15, and the other end is fixed to the limiting rod 16; the connecting rod 18 is made of stainless steel (with anti-slip texture on the surface) and is connected to the limiting rod. The 16 is welded and fixed, and slides to fit the top of the mounting block 15. The advantage of this structure is that, under normal conditions, the return spring 17 pushes the limit rod 16 into the tooth groove of the limit gear 14, locking the position of the rotating shaft 9, preventing the main board 7 and the sub-board 8 from shifting due to airflow impact or vibration, and ensuring the stability of the air outlet direction and wind speed. Pulling the connecting rod 18 can drive the limit rod 16 to compress the return spring 17 and disengage from the tooth groove, releasing the lock on the rotating shaft 9. At this time, turning the handle 13 can adjust the angle between the main board 7 and the sub-board 8, which is convenient to operate. The setting of the connecting rod 18 makes the sliding adjustment of the limit rod 16 more effortless and can accurately control the limit state.

[0028] Reference Figures 1 to 6 The cavity 10 has a guide groove 20 inside, and the bottom end of the connecting plate 11 is fixedly installed with a guide rod 19, and the guide rod 19 is adapted to the guide groove 20.

[0029] The above-mentioned scheme is adopted: the guide rod 19, which is welded and fixed at the bottom of the cavity 10, is made of high-strength stainless steel (chrome-plated for rust prevention and high smoothness). Its size is precisely matched with the guide groove 20 and the sliding gap is small. The advantage of this structure is that when the connecting plate 11 slides inside the cavity 10, the guide rod 19 moves synchronously along the guide groove 20. The cooperation of the two restricts the sliding trajectory of the connecting plate 11, preventing it from shifting laterally or tilting during the movement, ensuring that the connecting plate 11 can always maintain a horizontal state. This ensures that the connecting rod 12, which is rotatably connected to the connecting plate 11, moves in a coordinated manner, making the angle adjustment synchronization of the main plate 7 and the sub-plate 8 higher.

[0030] Reference Figures 1 to 6 A U-shaped block 903 is fixedly installed at the bottom of the rotating shaft 9. The main plate 7 and the sub-plate 8 are provided with fixing grooves 901 at both ends, and the fixing grooves 901 are adapted to the U-shaped block 903. A fixing block 902 is fixedly installed inside the fixing groove 901. The fixing block 902 is adapted to the U-shaped block 903. A threaded hole 904 is provided at one end of both the fixing block 902 and the U-shaped block 903, and a threaded rod 905 is threadedly connected to the threaded hole 904.

[0031] The above scheme employs the following: the U-shaped block 903, welded and fixed to the bottom of the rotating shaft 9, is made of wear-resistant alloy material. The inner walls of the fixing grooves 901 at both ends of the main plate 7 and the secondary plate 8 are regular and precisely match the dimensions of the U-shaped block 903. The fixing block 902 welded inside the fixing groove 901 is made of the same alloy material as the main plate 7 and the secondary plate 8, and fits tightly with the U-shaped groove of the U-shaped block 903. The threaded hole 904 at one end of the fixing block 902 and the U-shaped block 903 has high thread precision. The threaded rod 905 is made of high-strength alloy steel, and the external thread precisely meshes with the threaded hole 904. The advantage of this structural fit is that... The U-shaped block 903 is embedded in the fixing groove 901 and fits against the fixing block 902, forming a multi-point contact connection structure. This ensures that the torque of the rotating shaft 9 can be stably transmitted to the main board 7 and the sub-board 8, preventing the boards from loosening or rotating relative to each other under the impact of airflow. The threaded rod 905 fastens the U-shaped block 903 and the fixing block 902 through the threaded hole 904, further enhancing the connection strength and facilitating the later disassembly and replacement of the main board 7 or the sub-board 8. The cooperation between the fixing groove 901 and the U-shaped block 903 plays a role in pre-positioning the boards, ensuring that the angles of the main board 7 and the sub-board 8 are consistent during installation, thus improving assembly accuracy.

[0032] The working principle of this utility model is as follows: When it is necessary to adjust the air outlet direction, first push the connecting rod 18 on the mounting block 15 at the top of the air guide shell 6, which will drive the limiting rod 16 to slide along the mounting block 15 and compress the reset spring 17, so that the limiting rod 16 disengages from the tooth groove of the limiting gear 14, releasing the rotation lock on the rotating shaft 9. Then rotate the rotating handle 13 at the top of the air guide shell 6, which will drive the rotating shaft 9 fixed thereto to rotate. The connecting rod 12 on the outer periphery of the rotating shaft 9 will rotate synchronously. One end of the connecting rod 12 is rotatably connected to the connecting plate 11 in the cavity 10, and the guide rod 19 at the bottom of the connecting plate 11 slides along the guide groove 20 of the cavity 10 to ensure that the connecting plate 11 moves smoothly. When 11 moves, it drives the other connecting rods 12 and rotating shaft 9 to rotate synchronously, thereby causing the main board 7 and the symmetrically arranged sub-plates 8 inside the air guide shell 6 to rotate together. By adjusting the rotation angle of the rotating handle 13, the tilt angle of the main board 7 and sub-plates 8 inside the air guide shell 6 can be changed, thereby changing the guiding path of the airflow inside the air guide shell 6, so that the direction of the airflow discharged from the air outlet groove 3 is changed. After adjusting to the target direction, the connecting rod 18 is released, the reset spring 17 releases elastic potential energy to push the limit rod 16 to reset, re-engage with the tooth groove of the limit gear 14, and lock the position of the rotating shaft 9, the main board 7 and the sub-plate 8 to ensure the stability of the air outlet direction and meet the blowing needs in different scenarios.

[0033] 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 inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An air knife assembly, comprising an air knife cover plate (2) disposed at one end of an air knife body (1), an air outlet groove (3) opened at one end of the air knife body (1), and an air pipe connector (4) disposed at one end of the air knife body (1), characterized in that, The air knife body (1) has an installation groove (5) at one end, and an air guide shell (6) is fixedly installed at one end of the installation groove (5). The air guide shell (6) is connected to the air outlet groove (3). A main board (7) is rotatably connected inside the air guide shell (6). A secondary plate (8) is symmetrically rotatably connected inside the air guide shell (6). The main board (7) is located in the middle of multiple secondary plates (8). A rotating shaft (9) is fixedly installed at the top of both the main board (7) and the secondary plate (8). A rotating handle (13) is rotatably connected at the top of the air guide shell (6). The rotating handle (13) is fixedly installed with the rotating shaft (9).

2. The air knife assembly according to claim 1, characterized in that, The top of the air guide shell (6) is provided with a cavity (10), and a connecting plate (11) is slidably connected inside the cavity (10). The top of the main plate (7) and the sub-plate (8) are both fixedly installed with connecting rods (12), and the connecting rods (12) are fixedly installed on the outer periphery of the rotating shaft (9). One end of the connecting rod (12) is rotatably connected to the connecting plate (11).

3. The air knife assembly according to claim 2, characterized in that, The top of the air guide shell (6) is rotatably connected to a limiting gear (14), the limiting gear (14) is fixedly installed on the outer periphery of the rotating shaft (9), and the top of the air guide shell (6) is fixedly installed with an installation block (15), and a limiting rod (16) is slidably connected inside the installation block (15), the limiting rod (16) is adapted to the tooth groove of the limiting gear (14).

4. The air knife assembly according to claim 3, characterized in that, A reset spring (17) is fixedly installed inside the mounting block (15), and one end of the reset spring (17) is fixedly installed with the limiting rod (16). A connecting rod (18) is slidably connected to the top of the mounting block (15), and the connecting rod (18) is fixedly installed with the limiting rod (16).

5. The air knife assembly according to claim 4, characterized in that, The cavity (10) has a guide groove (20) inside, and a guide rod (19) is fixedly installed at the bottom of the connecting plate (11), and the guide rod (19) is adapted to the guide groove (20).

6. The air knife assembly according to claim 5, characterized in that, A U-shaped block (903) is fixedly installed at the bottom of the rotating shaft (9). The main plate (7) and the sub-plate (8) are provided with fixing grooves (901) at both ends, and the fixing grooves (901) are adapted to the U-shaped block (903). A fixing block (902) is fixedly installed inside the fixing groove (901). The fixing block (902) is adapted to the U-shaped block (903). A threaded hole (904) is provided at one end of both the fixing block (902) and the U-shaped block (903), and a threaded rod (905) is threadedly connected to the threaded hole (904).

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