Air knife nozzle protection device

Abstract

The utility model discloses an air knife nozzle protection device, which belongs to the technical field of air knife nozzle protection devices, comprises an air knife body, and is characterized in that a protection cover plate is arranged right above a nozzle of the air knife body, and two ends of the protection cover plate are respectively in running fit with the end wall of the air knife body; a wind shield is installed in a cavity of the air knife body and placed under a spray head of the air knife body, a rotating shaft is installed at the inner end of the wind shield, through holes are formed in the walls of the two ends of the air knife body, and the rotating shaft penetrates through the through holes in the end walls of the air knife body to be fixedly connected with a protective cover plate. The rotating shaft is connected with the end wall of the air knife body through a coil spring, the inner end of the coil spring is fixedly connected with the rotating shaft, and the outer end of the coil spring is fixedly connected with the air knife body. Compared with the prior art, the air knife nozzle has the characteristic of preventing materials, dust and other impurities from invading the air knife nozzle.

Description

Technical Field

[0001] The utility model relates to the technical field of air knife nozzle protection devices, in particular to an air knife nozzle protection device. Background Art

[0002] At present, the air knife has shown its unique value in port operations, especially in two main application scenarios. First of all, the air knife is widely installed under the belt conveyor and is usually used in combination with the water knife. This combined application method enables the air knife to effectively dry the moisture on the belt, thus avoiding the phenomenon of material spillage caused by excessive moisture on the belt during transportation. This is crucial for maintaining the cleanliness and efficient operation of the port, and also helps to reduce material losses and improve the overall economic benefits.

[0003] Secondly, the air knife also plays an irreplaceable role in the application of the car wash platform. When a truck passes through the car wash platform for cleaning, a large amount of moisture often remains on its wheel parts. At this time, the role of the air knife becomes prominent. It can quickly dry the moisture on the wheels, effectively preventing secondary pollution caused by the dripping of moisture on the wheels after the truck leaves the car wash platform. This not only improves the environmental protection level of the port but also maintains the overall image of the port.

[0004] However, although the air knife has many advantages in port applications, some problems have also emerged in the actual use process. The most prominent problem is that the nozzle of the air knife is easily blocked by materials when it is idle. Since the air outlet nozzle of the air knife is exposed during the working state and the wind force is large, it is not easy to be blocked during use. However, when the air knife is in a non-working state, the nozzle is easily invaded by impurities such as materials and dust in the surrounding environment without effective protection measures, resulting in nozzle blockage. Once the nozzle is blocked, the air knife cannot function properly, thus affecting the efficiency of the entire port operation. Summary of the Invention

[0005] The purpose of the utility model is to provide an air knife nozzle protection device aiming at the above-mentioned deficiencies of the prior art, so as to achieve the purpose of preventing the invasion of impurities such as materials and dust into the air knife nozzle.

[0006] A kind of air knife nozzle protection device provided by the utility model comprises an air knife body, and is characterized in that: a protection cover plate is installed directly above the nozzle of the air knife body, and both ends of the protection cover plate are rotatably matched with the end walls of the air knife body respectively; a wind baffle is installed in the cavity of the air knife body, the wind baffle is placed directly below the nozzle of the air knife body, a rotating shaft is installed at the inner end of the wind baffle, through holes are arranged on the walls at both ends of the air knife body, the rotating shaft passes through the through holes on the end wall of the air knife body and is fixedly connected with the protection cover plate, and a coil spring is connected between the rotating shaft and the end wall of the air knife body, the inner end of the coil spring is fixedly connected with the rotating shaft, and the outer end of the coil spring is fixedly connected with the air knife body.

[0007] Further, side protection plates are respectively installed on both sides of the protection cover plate, the side protection plates correspond to the two side walls of the nozzle of the air knife body, and the side protection plates can respectively cover the two side walls of the nozzle of the air knife body.

[0008] Further, side connecting plates are respectively installed at both ends of the protection cover plate, the upper ends of the side connecting plates are vertically and fixedly connected with the protection cover plate, the lower ends of the side connecting plates are rotatably matched with the end walls of the air knife body, and the rotating shaft passes through the through holes on the end wall of the air knife body and is fixedly connected with the lower ends of the side connecting plates.

[0009] Further, a fixed shaft is fixedly installed on the end wall of the air knife body, and the outer end of the coil spring is fixedly connected with the air knife body through the fixed shaft.

[0010] Compared with the prior art, the utility model has the following prominent beneficial effects:

[0011] When the utility model is not working, the protection cover plate and the side protection plates are covered above the nozzle of the air knife body under the action of the coil spring and are in a normally closed state. When the air knife body starts to work, the high-pressure air flow inside sprays outwards at a high speed, impacts the wind baffle and rotates upwards. The wind baffle drives the protection cover plate and the side protection plates to rotate outwards through the rotating shaft and the side connecting plates, driving the protection cover plate to open; after the work is completed, the protection cover plate resets under the action of the coil spring and covers directly above the nozzle of the air knife body again; thus, it can avoid the intrusion of materials, dust and other impurities in the surrounding environment into the nozzle of the air knife body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the utility model.

[0013] Figure 2 is a schematic internal structural diagram of the utility model.

[0014] Figure 3 is Figure 2 a partial enlarged view of part A in

[0015] Figure 4 is a schematic structural diagram of the open state of the utility model. Detailed implementation mode

[0016] The present utility model will be further described below in conjunction with the accompanying drawings of the specification and the detailed implementation mode.

[0017] As Figure 1 and 4 shown, the present utility model includes an air knife body 1, a protective cover plate 2 and a wind baffle 5.

[0018] The air knife body 1 is an existing device, and its specific structure will not be described in detail.

[0019] A protective cover plate 2 is installed directly above the nozzle of the air knife body 1. Side connecting plates 4 are respectively installed at both ends of the protective cover plate 2. The upper ends of the side connecting plates 4 are vertically and fixedly connected to the protective cover plate 2, and the lower ends of the side connecting plates 4 are rotationally matched with the end walls of the air knife body 1.

[0020] In an optimized solution, side protection plates 3 are respectively installed on both sides of the protective cover plate 2. The side protection plates 3 correspond to the two side walls of the nozzle of the air knife body 1, and the side protection plates 3 can respectively cover the two side walls of the nozzle of the air knife body 1 to prevent dust from entering the nozzle from the side.

[0021] As Figure 2 and 3 shown, a wind baffle 5 is installed in the cavity of the air knife body 1. The wind baffle 5 is placed directly below the nozzle of the air knife body 1. A rotating shaft 6 is installed at the inner end of the wind baffle 5. Through holes are provided on the walls at both ends of the air knife body 1. The rotating shaft 6 passes through the through holes on the end walls of the air knife body 1 and is fixedly connected to the lower ends of the side connecting plates 4. A coil spring 7 is connected between the rotating shaft 6 and the end wall of the air knife body 1. The inner end of the coil spring 7 is fixedly connected to the rotating shaft 6, and a fixed shaft is fixedly installed on the end wall of the air knife body 1. The outer end of the coil spring 7 is fixedly connected to the air knife body 1 through the fixed shaft.

[0022] The operation process is as follows: When the air knife body 1 is not working, the protective cover plate 2 and the side protection plates 3 cover above the nozzle of the air knife body 1 under the action of the coil spring 7 and are in a normally closed state. After the air knife body 1 starts to work, the high-pressure air flow inside sprays outwards at high speed, impacting the wind baffle 5 to rotate upwards. The wind baffle 5 drives the protective cover plate 2 and the side protection plates 3 to rotate outwards through the rotating shaft 6 and the side connecting plates 4, driving the protective cover plate 2 to open; after the work is completed, the protective cover plate 2 resets under the action of the coil spring 7 and covers directly above the nozzle of the air knife body 1 again.

[0023] It should be noted that the specific implementation scheme of the present utility model has described the present utility model in detail. For those skilled in the art, various obvious changes made to it without departing from the spirit and scope of the present utility model are within the protection scope of the present utility model.

Claims

1. An air knife nozzle protection device, comprising an air knife body (1), characterized in that: A protective cover plate (2) is installed directly above the nozzle of the air knife body (1). Both ends of the protective cover plate (2) are rotatably engaged with the end walls of the air knife body (1). A wind baffle (5) is installed in the cavity of the air knife body (1). The wind baffle (5) is placed directly below the nozzle of the air knife body (1). A rotating shaft (6) is installed at the inner end of the wind baffle (5). Through holes are provided on the walls at both ends of the air knife body (1). The rotating shaft (6) passes through the through holes on the end walls of the air knife body (1) and is fixedly connected to the protective cover plate (2). The rotating shaft (6) is connected to the end wall of the air knife body (1) through a torsion spring (7). The inner end of the torsion spring (7) is fixedly connected to the rotating shaft (6), and the outer end of the torsion spring (7) is fixedly connected to the air knife body (1).

2. The air knife nozzle protection device according to claim 1, wherein: Side protection plates (3) are respectively installed on both sides of the protective cover plate (2). The side protection plates (3) correspond to the two side walls of the nozzle of the air knife body (1), and the side protection plates (3) can respectively cover the two side walls of the nozzle of the air knife body (1).

3. The air knife nozzle protection device according to claim 1, characterized in that: Side connecting plates (4) are respectively installed at both ends of the protective cover plate (2). The upper ends of the side connecting plates (4) are vertically and fixedly connected to the protective cover plate (2). The lower ends of the side connecting plates (4) are rotatably engaged with the end walls of the air knife body (1). The rotating shaft (6) passes through the through holes on the end walls of the air knife body (1) and is fixedly connected to the lower ends of the side connecting plates (4).

4. The air knife nozzle protection device according to claim 1, characterized in that: A fixed shaft is fixedly installed on the end wall of the air knife body (1). The outer end of the torsion spring (7) is fixedly connected to the air knife body (1) through the fixed shaft.

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