Air knife air isolation protection cover

Abstract

The utility model provides an air knife air isolation protective cover, which belongs to the technical field of air knives and comprises a protective cover body, a mounting hole, a mounting port and a communication port, the mounting hole, the mounting port and the communication port are arranged on the protective cover body in a penetrating manner, and at least one guide groove extending to the communication port is arranged on the inner wall of the protective cover body along the circumference direction in a penetrating manner. The extending direction of the guide groove is consistent with the rotating direction of the fan, and the width of the edge of the guide groove is gradually decreased from the end away from the communicating opening to the end communicating with the communicating opening. And by arranging the guide groove, the air flow can be more efficiently guided to be exhausted to the communicating opening, the backflow phenomenon of the fan is avoided, and the overall production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind knives, in particular to a wind knife isolating air protective cover. Background Art

[0002] Air knives are mainly used in the high-pressure water washing process after the tin spraying process and the subsequent drying process in tin surface processing. The use of air knives can effectively remove impurities on the board surface, such as dust and moisture, to ensure the cleanliness of the board surface and provide good solderability for subsequent welding or plug-in. However, in the prior art of round wire production, the nitrogen on the surface of the tin liquid is not completely isolated, causing the nitrogen to be blown out from the air knife mouth and directly mixed with the air on the tin surface to produce a large area of ​​oxides, which requires timely cleaning of the oxides during production, thereby reducing production efficiency and affecting product quality.

[0003] In order to address the above problems, a Chinese patent with the existing announcement number CN213624330U proposes a round wire tinning air knife gas protection cover. The device is connected to the fan through the air cover. Since there is no air and oxygen in the air cover, the tin surface can be kept sealed from the outside world, so that no oxide is generated on the tin surface, so that the tin surface can be tinned for a long time, thereby speeding up the production efficiency.

[0004] However, although the above-mentioned round wire tinning air knife gas protection cover can utilize the air cover to isolate the tin surface from the outside world, so that no oxide is generated on the tin surface, when the round wire tinning air knife gas protection cover protects the fan, the airflow generated by the fan is prone to backflow and cannot be quickly discharged to the through hole, thereby reducing the overall production efficiency. Therefore, the utility model provides a wind knife isolation air protection cover to meet the needs. Utility Model Content

[0005] The utility model aims to solve the problems existing in the above-mentioned background technology and proposes a wind knife isolating air protection cover.

[0006] The technical problem to be solved by the utility model is to provide a wind knife insulating air protection cover to solve the problem that when the existing wind knife protection cover is used to protect the fan, the airflow generated by the fan is prone to backflow and cannot be quickly discharged to the through hole, thereby reducing the overall production efficiency.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0008] A wind knife isolating air protective cover, comprising:

[0009] A protective cover body and mounting holes, mounting ports and connecting ports are arranged through the protective cover body. The inner wall of the protective cover body is provided with at least one guide groove extending to the connecting port along its circumference direction. The extension direction of the guide groove is consistent with the rotation direction of the fan. The width of the guide groove gradually decreases from the end away from the connecting port to the end connected with the connecting port.

[0010] Preferably, the inner wall of the protective cover body is provided with a slope connected with the guide groove.

[0011] Preferably, the angle of the slope is between 0° and 45°.

[0012] Preferably, the slope is penetrated by an inclined groove inclined along the rotation direction of the fan.

[0013] Preferably, the angle of the inclined groove is between 5° and 30°.

[0014] Preferably, the protective cover body is made of a double-layer acrylic plate made of transparent material.

[0015] Preferably, a sound absorbing component is provided between the double-layer acrylic plates of the protective cover body, and the sound absorbing components are arranged at intervals along the circumference direction of the protective cover body. The sound absorbing component includes stacked sound absorbing cotton and sound absorbing panels.

[0016] Preferably, handles are relatively fixedly connected to both sides of the protective cover body.

[0017] In the above solution, by providing the guide groove, the wind flow can be more efficiently guided to be discharged to the connecting port through the guide groove, thereby avoiding the phenomenon of backflow of the fan and improving the overall production efficiency.

[0018] In the above scheme, by setting up inclined grooves and slopes, the efficiency of airflow discharge to the guide groove can be improved, and the speed of airflow discharge from the guide groove to the connecting port can be accelerated, thereby ensuring uniform and stable airflow, avoiding the generation of vortices and dead corners, and improving the purge efficiency.

[0019] In the above scheme, by setting sound-absorbing cotton and sound-absorbing panels and adopting a protective cover body composed of a double-layer acrylic plate, it is convenient for users to better observe the situation inside the protective cover body. At the same time, the suction component is used to improve the sound insulation effect of the protective cover body and enhance the usability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0021] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 For this utility model Figure 1 Schematic diagram of the local structure from another perspective;

[0023] Figure 3 It is a structural schematic diagram of the guide groove of the utility model;

[0024] Figure 4 It is a schematic diagram of the local structure of the slope of the utility model;

[0025] Figure 5 It is a partial structural schematic diagram of the chute of the utility model;

[0026] Figure 6 It is a partial structural schematic diagram of the sound-absorbing board and the sound-absorbing cotton of the utility model.

[0027] [Reference Signs]

[0028] 1. Protective cover body; 2. Mounting port; 3. Mounting hole; 4. Handle; 5. Connecting port; 6. Guide groove; 7. Slope; 8. Sound-absorbing board; 9. Sound-absorbing cotton; 10. Oblique groove. DETAILED DESCRIPTION

[0029] like Figures 1 to 6 As shown, an embodiment of the utility model provides a wind knife-isolating air protective cover, comprising a protective cover body 1 and a mounting hole 3, a mounting port 2 and a connecting port 5 which are arranged through the protective cover body 1. The inner wall of the protective cover body 1 is penetrated by at least one guide groove 6 extending to the connecting port 5 along its circumference direction. The extending direction of the guide groove 6 is consistent with the rotation direction of the fan. The width of the guide groove 6 gradually decreases from the end away from the connecting port 5 to the end connected with the connecting port 5.

[0030] Specifically, when in use, the fan is first connected to the protective cover body 1 through the mounting port 2 and the mounting hole 3, and then the fan is connected to the tin surface through the connecting port 5. When the fan is started, the wind will be discharged to the connecting port 5 along the guide groove 6. The guide groove 6 can more efficiently guide the wind to be discharged to the connecting port 5, thereby avoiding the backflow of the fan and improving the overall production efficiency. At the same time, the protective cover body 1 forms a relatively closed environment by contacting with the tin surface, which can effectively reduce the oxidation reaction of the air pocket on the tin surface, thereby reducing the generation of tin ash, reducing the number of times employees scrape tin ash and reducing the production of defective products. This solves the problem that when the existing wind knife protective cover is used to protect the fan, the wind flow generated by the fan is prone to backflow and cannot be quickly discharged to the through hole, thereby reducing the overall production efficiency.

[0031] like Figure 4As shown, in this embodiment, the inner wall of the protective cover body 1 is provided with a slope 7 connected with the guide groove 6, and the angle of the slope 7 is between 0° and 45°. Specifically, the wind flow can be better guided into the guide groove 6 through the slope 7.

[0032] like Figure 5 As shown, in the present embodiment, the slope 7 is penetrated by an inclined groove 10 inclined along the rotation direction of the fan, and the angle of the inclined groove 10 is between 5° and 30°. Specifically, the inclined groove 10 can further improve the efficiency of the wind flow discharged to the guide groove 6, and accelerate the speed of the wind flow discharged from the guide groove 6 to the connecting port 5, thereby ensuring uniform and stable airflow, avoiding the generation of vortices and dead corners, and improving the blowing efficiency.

[0033] like Figure 6 As shown, in the present embodiment, the protective cover body 1 is formed of a double-layer acrylic plate of a transparent material, a sound-absorbing component is provided between the double-layer acrylic plates of the protective cover body 1, the sound-absorbing components are arranged at intervals along the circumference direction of the protective cover body 1, and the sound-absorbing components include stacked sound-absorbing cotton 9 and sound-absorbing plates 8. Specifically, the protective cover body 1 formed of a double-layer acrylic plate is convenient for users to better observe the situation inside the protective cover body 1, and at the same time, the suction component is used to improve the sound insulation effect of the protective cover body 1, thereby enhancing the usability of the device.

[0034] like Figure 1 As shown, in this embodiment, handles 4 are relatively fixedly connected to both sides of the protection cover body 1 .

[0035] Working principle:

[0036] When in use, the fan is first connected to the protective cover body 1 through the installation port 2 and the installation hole 3, and then the fan is connected to the tin surface through the connecting port 5. When the fan is started, the wind will be discharged to the guide groove 6 through the slope 7 and the inclined groove 10, and then discharged to the connecting port 5 along the guide groove 6. The guide groove 6 can more efficiently guide the wind flow to the connecting port 5, avoiding the phenomenon of backflow of the fan, thereby improving the overall production efficiency. At the same time, the protective cover body 1 forms a relatively closed environment by contacting with the tin surface, which can effectively reduce the oxidation reaction of the air pocket on the tin surface, thereby reducing the generation of tin ash, reducing the number of times employees scrape tin ash and reducing the production of defective products. It solves the problem that when the existing wind knife protective cover is used to protect the fan, the wind flow generated by the fan is prone to backflow and cannot be quickly discharged to the through hole, thereby reducing the overall production efficiency.

Claims

1. A wind knife air-isolating protective cover, comprising a protective cover body (1) and a mounting hole (3), a mounting port (2) and a communication port (5) penetrating the protective cover body (1), characterized in that: The inner wall of the protective cover body (1) is provided with at least one guide groove (6) extending to the connecting port (5) along its circumferential direction, the extending direction of the guide groove (6) being consistent with the rotation direction of the fan, and the width of the guide groove (6) gradually decreases from the end away from the connecting port (5) to the end connected to the connecting port (5).

2. The wind knife isolating air protective cover according to claim 1, characterized in that: The inner wall of the protective cover body (1) is provided with a slope (7) connected to the guide groove (6).

3. The wind knife isolating air protective cover according to claim 2, characterized in that: The angle of the slope (7) is between 0° and 45°.

4. The wind knife isolating air protective cover according to claim 3, characterized in that: The slope (7) is penetrated by an inclined groove (10) inclined along the rotation direction of the fan.

5. The wind knife isolating air protective cover according to claim 4, characterized in that: The angle of the inclined groove (10) is between 5° and 30°.

6. The wind knife isolating air protective cover according to claim 1, characterized in that: The protective cover body (1) is made of a double-layer acrylic plate made of transparent material.

7. The wind knife isolating air protective cover according to claim 6, characterized in that: A sound absorbing component is provided between the double-layer acrylic plates of the protective cover body (1), and the sound absorbing components are arranged at intervals along the circumference direction of the protective cover body (1). The sound absorbing component comprises stacked sound absorbing cotton (9) and a sound absorbing plate (8).

8. The wind knife isolating air protective cover according to claim 6, characterized in that: Handles (4) are relatively fixedly connected to both sides of the protective cover body (1).

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