A wind knife dust removal structure for a coal conveying belt

Abstract

The utility model provides a kind of wind knife dust removal structure for coal conveyor, it is related to coal transportation and processing technical field, including wind knife cavity, the right side of wind knife cavity is equipped with wind knife cavity mouth protection assembly, the inboard of shock-absorbing support plate is equipped with shock-absorbing damping, the end of shock-absorbing damping is equipped with shock-absorbing pressure rod, the right side of wind knife cavity is provided with wind knife air outlet cavity mouth;With high pressure airflow from wind knife air outlet cavity mouth spouts, wind knife air outlet cavity mouth will produce high frequency vibration, when upper and lower symmetrical shock-absorbing damping will promote shock-absorbing pressure rod to adhere to the outer surface of wind knife air outlet cavity mouth, vibration energy is absorbed by elastic contact, effectively inhibit the structural fatigue of wind knife air outlet cavity mouth due to airflow impact, and shock-absorbing pressure rod is in elastic shock-absorbing, shock-absorbing rubber pad outside shock-absorbing pressure rod is silica gel material, with good flexibility and wear resistance, can effectively increase the contact damping between shock-absorbing pressure rod and wind knife cavity, further relieve vibration transmission.

Description

Technical Field

[0001] This utility model relates to the field of coal transportation and processing technology, and in particular to a dust removal structure for a coal conveyor belt using an air knife. Background Technology

[0002] Air knives are devices that use compressed air to create a high-speed airflow to achieve drying, cleaning, or cooling. Air knives for coal conveyor belts are a specific application of this technology. They are installed at specific locations on the conveyor belt and use high-speed airflow to blow away dust and moisture from the surface of the coal, reducing dust pollution during transportation, lowering the moisture content of the coal, ensuring the efficiency of subsequent processing, and cleaning residual coal slag on the surface of the conveyor belt, thus extending the equipment's lifespan.

[0003] However, during the use of air knives, the air knife concentrates the air and then ejects it at high speed from a narrow slit-shaped outlet. When the air is ejected from the slit, it easily causes high-frequency vibration at the outlet. This high-frequency vibration can easily cause metal fatigue at the air knife outlet, which can lead to serious damage and affect the normal use of the air knife. In addition, the air knife cavity is exposed to a high-dust environment for a long time, which can easily accumulate coal dust particles, resulting in uneven airflow or blockage, affecting dust removal efficiency.

[0004] Therefore, we provide a dust removal structure for air knives used in coal conveyors to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: A dust removal structure for a coal conveyor belt using an air knife includes an air knife cavity. A dust extraction frame is provided on the upper side of the air knife cavity. A dust extraction port is installed on the right side of the dust extraction frame. A baffle connecting plate is provided on the right side of the dust extraction frame. An air knife baffle is installed on the outer side of the baffle connecting plate. An air knife port protection assembly is installed on the right side of the air knife cavity. The air knife port protection assembly includes shock-absorbing support plates welded to the upper and lower ends of the right side of the air knife cavity. Shock-absorbing dampers are installed on the inner side of the shock-absorbing support plates. Shock-absorbing pressure rods are installed at the ends of the shock-absorbing dampers. An air knife outlet is provided on the right side of the air knife cavity.

[0006] As a further description of the above technical solution: The air knife cavity is installed on the lower side of the coal conveyor belt. The dust extraction chamber is connected to the dust extraction frame by screws. The outer pipe of the dust extraction chamber is connected to a suction device.

[0007] As a further description of the above technical solution: The air knife baffle and the baffle connecting plate are connected by a slot. The air knife baffle wraps around the outside of the air knife outlet. The air knife baffle is made of spring steel and is evenly distributed.

[0008] As a further description of the above technical solution: The damping and shock-absorbing rods provide elastic damping to the upper and lower sides of the air knife outlet. The damping and shock-absorbing rods are arranged in two symmetrical sets about the air knife outlet.

[0009] As a further description of the above technical solution: The surface of the shock-absorbing pressure rod is bonded with a shock-absorbing rubber pad, which is made of silicone and fits tightly against the air knife cavity.

[0010] As a further description of the above technical solution: An electric lead screw is installed on the upper outer side of the air outlet of the air knife, and a lead screw driven rod is installed on the lower outer side of the air outlet of the air knife. A lead screw slider is threadedly connected between the electric lead screw and the lead screw driven rod. A cavity cleaning pad is adhered to the inner side of the lead screw slider. The electric lead screw and the lead screw driven rod drive the lead screw slider to move laterally. The cavity cleaning pad is connected to the air outlet of the air knife by a groove. The cavity cleaning pad is made of nylon cloth.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a wind knife cavity protection component. When in use, as high-pressure airflow is ejected from the wind knife outlet, the outlet will generate high-frequency vibration. At this time, the symmetrically arranged damping rods will push the damping rods to fit against the outer surface of the wind knife outlet. Through elastic contact, the vibration energy is absorbed, effectively suppressing the structural fatigue of the wind knife outlet caused by airflow impact. When the damping rods perform elastic damping, the damping pads outside the damping rods are made of silicone, which has good flexibility and wear resistance. This effectively increases the contact damping between the damping rods and the wind knife cavity, further mitigating vibration transmission and reducing collision noise.

[0012] 2. This utility model uses a protective component for the air knife cavity. When it is needed, as the coal dust falls naturally, some of the coal dust will not be affected by the wind and will fall onto the surface of the air knife outlet cavity and accumulate. At this time, the electric screw is started, which drives the screw slider to move laterally and reciprocate, so that the cavity wiping pad synchronously rubs the surface of the air knife outlet cavity. The cavity wiping pad made of nylon cloth has moderate wear resistance and flexibility, which can effectively remove the accumulated dust without damaging the surface of the outlet cavity. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model; Figure 2 This is a schematic diagram of the air knife cavity of this utility model in use. Figure 3 This is a schematic diagram of the overall disassembled structure of this utility model; Figure 4 This is a schematic diagram of the overall structure of the air knife cavity and the air knife cavity opening protection assembly of this utility model; Figure 5 This is a schematic diagram of the mating structure of the air outlet and the wiping pad of the air knife of this utility model.

[0014] The following are the labeling elements in the diagram: 1. Air knife cavity; 2. Dust extraction frame; 3. Dust extraction cavity opening; 4. Baffle connecting plate; 5. Air knife baffle; 6. Air knife cavity opening protection assembly; 601. Vibration damping support plate; 602. Vibration damping; 603. Vibration damping rod; 604. Vibration damping pad; 605. Air knife outlet cavity; 606. Electric lead screw; 607. Lead screw driven rod; 608. Lead screw slider; 609. Cavity wiping pad. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-5 As shown, this utility model provides a technical solution: a dust removal structure for a coal conveyor belt using an air knife, including an air knife cavity 1, a dust extraction frame 2 on the upper side of the air knife cavity 1, a dust extraction port 3 installed on the right side of the dust extraction frame 2, a baffle connecting plate 4 on the right side of the dust extraction frame 2, an air knife baffle 5 installed on the outer side of the baffle connecting plate 4, an air knife port protection component 6 installed on the right side of the air knife cavity 1, the air knife port protection component 6 including shock-absorbing support plates 601 welded to the upper and lower ends of the right side of the air knife cavity 1, shock-absorbing dampers 602 installed on the inner side of the shock-absorbing support plates 601, shock-absorbing pressure rods 603 installed at the ends of the shock-absorbing dampers 602, and an air knife outlet port 605 provided on the right side of the air knife cavity 1.

[0017] Furthermore, the air knife chamber 1 is installed on the lower side of the coal conveyor belt, and the dust extraction port 3 is connected to the dust extraction frame 2 by screws. The outer pipe of the dust extraction port 3 is connected to a suction device. When needed, the air knife chamber 1 is installed as a whole on the lower side of the end of the coal conveyor belt. At this time, after the conveyor belt unloads the coal, the air knife chamber 1 blows out a high-speed airflow from the air knife outlet 605, which raises the coal dust remaining on the surface of the conveyor belt. At this time, the external suction device performs negative pressure suction through the dust extraction port 3, thereby drawing the agitated coal dust into the dust extraction port 3 and reducing the diffusion of coal dust around the conveyor belt.

[0018] Furthermore, the air knife baffle 5 and the baffle connecting plate 4 are connected by a slot. The air knife baffle 5 wraps around the outside of the air knife outlet 605. The air knife baffle 5 is made of spring steel and is evenly distributed. When needed, the air knife baffle 5 wraps around the outside of the air knife outlet 605. When a coal block accidentally falls to the air knife outlet 605 outside the air knife cavity 1, the air knife baffle 5 can use its elastic deformation to guide the coal block to slide down, avoiding direct impact on the air knife outlet 605 and damage to the air knife outlet 605.

[0019] Furthermore, the damping damper 602 and the damping rod 603 provide elastic damping to the upper and lower sides of the air knife outlet 605. The damping damper 602 and the damping rod 603 are arranged symmetrically in two sets about the air knife outlet 605. When it is needed, as the high-pressure airflow is ejected from the air knife outlet 605, the air knife outlet 605 will generate high-frequency vibration. At this time, the damping damper 602, which is symmetrically arranged, will push the damping rod 603 to fit against the outer surface of the air knife outlet 605. Through elastic contact, the vibration energy is absorbed, effectively suppressing the structural fatigue of the air knife outlet 605 caused by the airflow impact.

[0020] Furthermore, a shock-absorbing pad 604 is adhered to the surface of the shock-absorbing rod 603. The shock-absorbing pad 604 is made of silicone and is tightly fitted to the air knife cavity 1. When the shock-absorbing rod 603 performs elastic shock absorption, the shock-absorbing pad 604 outside the shock-absorbing rod 603, being made of silicone, has good flexibility and wear resistance, which can effectively increase the contact damping between the shock-absorbing rod 603 and the air knife cavity 1, further alleviate vibration transmission, and reduce collision noise.

[0021] Furthermore, an electric lead screw 606 is installed on the upper outer side of the air outlet 605 of the air knife, and a lead screw driven rod 607 is installed on the lower outer side of the air outlet 605. A lead screw slider 608 is threadedly connected between the electric lead screw 606 and the lead screw driven rod 607. A cavity cleaning pad 609 is adhered to the inner side of the lead screw slider 608. The electric lead screw 606 and the lead screw driven rod 607 drive the lead screw slider 608 to move laterally. The cavity cleaning pad 609 and the air outlet 605 of the air knife are separated by a... The slot connection and the cavity cleaning pad 609 are made of nylon cloth. When in use, as coal dust falls naturally, some coal dust will not be affected by the wind and will fall onto the surface of the air outlet 605 of the air knife and accumulate. At this time, the electric screw 606 is started, which drives the screw slider 608 to move laterally and reciprocate, so that the cavity cleaning pad 609 synchronously rubs the surface of the air outlet 605 of the air knife. The nylon cloth cavity cleaning pad 609 has moderate wear resistance and flexibility, which can effectively remove accumulated dust without damaging the surface of the air outlet.

[0022] Working principle: When needed, the air knife chamber 1 is positioned towards the lower end of the coal conveyor belt. As the conveyor belt delivers coal, the conveyor belt, contaminated with coal dust, rotates to the upper side of the air knife chamber 1. At this time, the air knife chamber 1 ejects high-pressure airflow through the air knife outlet 605, blowing away the coal dust adhering to the surface of the conveyor belt. The dust extraction port 3, connected to the dust extraction frame 2, forms a negative pressure area through an external suction device, drawing the coal dust through the dust extraction port 3 to reduce its spread. If any coal chunks fall, they will fall outside the air knife baffle 5, bounced away, preventing damage to the air knife outlet 605. With use, the air knife outlet 605 will vibrate due to high-frequency air pressure. At this time, the damping damper 602 connected to the damping support plate 601 will push the damping pressure rod 603, which is wrapped with damping rubber pad 604, to press near the air knife outlet 605. The vibration of the air knife outlet 605 is reduced through resonance. The damping rubber pad 604 can not only reduce vibration, but also reduce noise. As it is used, some coal dust will adhere to the surface of the air knife outlet 605. At this time, the electric screw 606 is started, which drives the screw slider 608 to move laterally along the screw driven rod 607. The screw slider 608 drives the cavity wiping pad 609 to wipe the air knife outlet 605 and remove the attached coal dust. This completes the use process of an air knife dust removal structure for coal conveyor belt.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust removal structure for a coal conveyor belt using an air knife, comprising an air knife cavity (1), characterized in that: A dust extraction frame (2) is provided on the upper side of the air knife cavity (1). A dust extraction port (3) is installed on the right side of the dust extraction frame (2). A baffle connecting plate (4) is provided on the right side of the dust extraction frame (2). An air knife baffle (5) is installed on the outer side of the baffle connecting plate (4). An air knife cavity port protection component (6) is installed on the right side of the air knife cavity (1). The air knife cavity port protection component (6) includes a shock-absorbing support plate (601) welded to the upper and lower ends of the right side of the air knife cavity (1). A shock-absorbing damper (602) is installed on the inner side of the shock-absorbing support plate (601). A shock-absorbing pressure rod (603) is installed at the end of the shock-absorbing damper (602). An air knife outlet port (605) is provided on the right side of the air knife cavity (1).

2. The dust removal structure for a coal conveyor belt using an air knife according to claim 1, characterized in that, The air knife cavity (1) is installed on the lower side of the coal conveyor belt. The dust extraction chamber (3) and the dust extraction frame (2) are connected by screws. The outer pipe of the dust extraction chamber (3) is connected to a suction device.

3. The dust removal structure for a coal conveyor belt using an air knife according to claim 1, characterized in that, The air knife baffle (5) and the baffle connecting plate (4) are connected by a slot. The air knife baffle (5) is wrapped around the outside of the air knife outlet (605). The air knife baffle (5) is made of spring steel and is evenly distributed.

4. The dust removal structure for a coal conveyor belt using an air knife according to claim 1, characterized in that, The damping damper (602) and damping rod (603) provide elastic damping to the upper and lower sides of the air knife outlet (605). The damping damper (602) and damping rod (603) are arranged symmetrically in two sets about the air knife outlet (605).

5. The dust removal structure for a coal conveyor belt using an air knife according to claim 1, characterized in that, The surface of the shock-absorbing pressure rod (603) is bonded with a shock-absorbing pad (604), which is made of silicone and is tightly fitted to the air knife cavity (1).

6. The dust removal structure for a coal conveyor belt using an air knife according to claim 1, characterized in that, An electric lead screw (606) is installed on the upper outer side of the air outlet (605) of the air knife, and a lead screw driven rod (607) is installed on the lower outer side of the air outlet (605) of the air knife. A lead screw slider (608) is threaded between the electric lead screw (606) and the lead screw driven rod (607). A cavity cleaning pad (609) is adhered to the inner side of the lead screw slider (608). The electric lead screw (606) and the lead screw driven rod (607) drive the lead screw slider (608) to move laterally. The cavity cleaning pad (609) is connected to the air outlet (605) of the air knife by a slot. The cavity cleaning pad (609) is made of nylon cloth.

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