Steel slag ultrafine powder screening device

Abstract

The utility model provides a superfine steel slag powder screening device, which relates to the field of fine steel slag powder processing equipment, and comprises an ultrasonic vibrating screen body, a blanking hopper, a drying box, a feeding pipe, a jacket, a steam generator, a material guide thin plate, an electric heating plate, a crushing component and an anti-caking blade, according to the device, steel slag fine powder is dried and caked steel slag powder is effectively crushed before being subjected to fine ultrasonic vibration screening, so that the probability that wet steel slag fine powder is directly introduced into an ultrasonic vibration screen to cause screen blockage is reduced, and the frequency of subsequent maintenance of the ultrasonic vibration screen is reduced; the screening process of the superfine steel slag powder is further optimized, drying and screening are achieved on one device, and then the functionality and the using effect of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of steel slag fine powder processing equipment, and more specifically, to a steel slag ultrafine powder screening device. Background Technology

[0002] Steel slag is a waste product generated in the metallurgical industry. With the rapid development of the steel industry, China's steel slag production has increased rapidly. Therefore, the treatment and resource utilization of waste slag from steel enterprises has received increasing attention.

[0003] Currently, after the steel slag fine powder is processed, a screening process is required. Existing methods use ultrasonic vibrating screens to finely screen steel slag powder of different particle sizes. Ultrasonic vibrating screens convert electrical energy into high-frequency electrical energy, which is then input into an ultrasonic transducer, transforming it into mechanical vibration. This results in a high-frequency, low-amplitude ultrasonic vibration wave superimposed on the screen mesh. This high-frequency vibration keeps the ultrafine powder in suspension, suppressing adhesion, friction, and settling, thus solving screening problems related to strong adsorption, easy agglomeration, high static electricity, high fineness, high density, and low specific gravity. However, if the screened steel slag fine powder is damp, subsequent wet material easily adheres to the screen mesh, causing screen blockage, affecting screening efficiency, and increasing the maintenance frequency of the ultrasonic vibrating screen. Currently, there is a lack of screening devices that integrate drying and screening, thus the screening effect of steel slag fine powder needs improvement. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose a steel slag ultrafine powder screening device.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A steel slag ultrafine powder screening device includes an ultrasonic vibrating screen body, which includes a cover with a feed inlet, a hopper, a drying chamber, a feed pipe, a jacket, a steam generator, a guide plate, a heating plate, a crushing assembly, and anti-caking blades.

[0007] The hopper is fixed on the body of the ultrasonic vibrating screen and its outlet is connected to the inlet.

[0008] The drying chamber is movably connected and communicates with the top of the discharge hopper;

[0009] The feed pipe is fixed at the top of the drying chamber;

[0010] The jacket is fixed to the outer wall of the drying chamber and connected to the steam generator through the air inlet hose;

[0011] Several guide plates are inclined and staggered inside the drying oven, with the ends of the guide plates spaced apart from the inner wall of the drying oven.

[0012] The heating plate is positioned at the bottom of the material guide plate;

[0013] The crushing component is fixed inside the drying chamber and located below the end of the bottom guide plate;

[0014] Multiple anti-caking blades are mounted on the shredding assembly.

[0015] Furthermore, the pulverizing assembly includes a drive motor, a pulverizing roller, and mounting rods. The drive motor is fixed on the drying chamber and connected to the pulverizing roller inside the drying chamber. Several mounting rods are symmetrically fixed on the pulverizing roller, and several anti-caking blades are equidistantly arranged on each mounting rod.

[0016] Furthermore, the anti-caking blade is designed in an arc shape.

[0017] The above method can crush some of the agglomerated steel slag powder after the steel slag fine powder has been dried.

[0018] Furthermore, the jacket is provided with an air outlet pipe, and an exhaust valve is provided on the air outlet pipe.

[0019] In the above scheme, when the high-temperature steam cools down to room temperature after a period of use, the exhaust valve can be opened to release the gas. After the gas is released, the exhaust valve should be closed and new high-temperature steam should be introduced for drying steel slag fine powder.

[0020] Furthermore, the hopper and drying box are provided with ear plates that are opposite each other and in contact with each other. The ear plates have fixing holes, and long screws are fitted into the fixing holes. Nuts that are in contact with the ear plates are threaded onto the long screws.

[0021] The above solution allows for flexible installation and disassembly of the hopper and the drying chamber, thus facilitating the maintenance, repair, or cleaning of the internal parts.

[0022] Furthermore, a dust extraction fan is installed on the top of the drying chamber, located on one side of the feed pipe, and a filter screen is movably installed on the outside of the suction port of the dust extraction fan.

[0023] The above solution uses a vacuum fan and a filter to reduce dust and particulate matter in the surrounding air during the screening process. The filter can be removed and replaced at any time.

[0024] Furthermore, the drying oven is made of heat-insulating panels.

[0025] The above scheme uses heat insulation panels to prepare the drying oven, which can reduce the rate at which heat is lost from the inside of the drying oven to the outside.

[0026] Furthermore, the discharge port and the inlet of the hopper are connected by a star-shaped unloader.

[0027] The above scheme uses a star-shaped unloader to evenly feed the dried and pulverized steel slag powder into the body of the ultrasonic vibrating screen.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] Compared to existing technologies, this device first dries and effectively breaks up agglomerated steel slag powder before performing fine ultrasonic vibration screening on it. This reduces the probability of the screen becoming clogged if wet steel slag powder is directly fed into the ultrasonic vibrating screen, thus reducing the frequency of subsequent maintenance of the ultrasonic vibrating screen. The screening process for ultrafine steel slag powder is further optimized, and drying and screening are achieved in one device, thereby improving the functionality and performance of the device. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 for Figure 1 Enlarged view of section A (labeled A);

[0032] Figure 3 for Figure 1 Enlarged view of section B (labeled B);

[0033] Figure label:

[0034] 1. Ultrasonic vibrating screen body; 101. Cover; 2. Hopper; 3. Drying box; 4. Feed pipe; 5. Jacket; 51. Air inlet hose; 52. Air outlet pipe; 53. Exhaust valve; 6. Guide plate; 7. Heating plate; 8. Anti-caking blade; 9. Drive motor; 10. Crushing roller; 11. Mounting rod; 12. Ear plate; 13. Long screw; 14. Nut; 15. Dust extraction fan; 16. Filter screen. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0036] like Figures 1 to 3As shown, a steel slag ultrafine powder screening device includes an ultrasonic vibrating screen body 1, which includes a cover 101 with a feed inlet, a hopper 2, a drying box 3, a feed pipe 4, a jacket 5, a steam generator, a guide plate 6, a heating plate 7, a crushing assembly, and anti-caking blades 8.

[0037] The hopper 2 is fixed on the ultrasonic vibrating screen body 1 and its outlet is connected to the inlet.

[0038] The drying chamber 3 is movably connected and communicates with the top of the hopper 2 (specifically, the drying chamber 3 is made of heat insulation board to reduce the rate of heat loss from the inside to the outside).

[0039] The feed pipe 4 is fixed to the top of the drying oven 3;

[0040] The jacket 5 is fixed to the outer wall of the drying chamber 3 and connected to the steam generator through the air inlet hose 51 (more precisely, the jacket 5 is equipped with an air outlet pipe 52, and the air outlet pipe 52 is equipped with an exhaust valve 53. When the high-temperature steam is used for a period of time and then drops to room temperature, the exhaust valve 53 can be opened to discharge the gas. After the gas is discharged, the exhaust valve 53 is closed and new high-temperature steam is introduced for drying steel slag fine powder. It should be noted that the steam generator does not work during the air leakage process of the jacket 5).

[0041] Several guide plates 6 are inclined and staggered inside the drying oven 3, with the ends of the guide plates 6 spaced apart from the inner wall of the drying oven 3.

[0042] The heating plate 7 is arranged at the bottom of the material guiding plate 6;

[0043] The crushing component is fixed inside the drying chamber 3 and located below the end of the bottom guide plate 6;

[0044] Multiple anti-caking blades 8 are mounted on the shredding assembly.

[0045] Further refinements of the embodiments of this utility model, such as... Figure 1 and Figure 2 As shown, the crushing assembly includes a drive motor 9, a crushing roller 10, and mounting rods 11. The drive motor 9 is fixed on the drying box 3. The drive motor 9 is connected to the crushing roller 10 inside the drying box 3. Several mounting rods 11 are symmetrically fixed on the crushing roller 10. Several anti-caking blades 8 are equidistantly arranged on each mounting rod 11.

[0046] In a further optimization of the above embodiment, the anti-caking blade 8 is designed in an arc shape. The arc-shaped anti-caking blade 8 can enhance the strength of the tool, reduce the pressure on the blade during use, and extend the service life of the tool.

[0047] Further refinements of the embodiments of this utility model, such as... Figure 1 and Figure 3 As shown, the hopper 2 and the drying box 3 are provided with ear plates 12 that are opposite each other and in contact with each other. The ear plates 12 have fixing holes, and long screws 13 are fitted into the fixing holes. Nuts 14 that are in contact with the ear plates 12 are threaded onto the long screws 13.

[0048] Further refinements of the embodiments of this utility model, such as... Figure 1 As shown, a dust extraction fan 15 is installed on the top of the drying chamber 3, located on one side of the feed pipe 4. A filter screen 16 is movably installed on the outside of the suction port of the dust extraction fan 15. The dust extraction fan 15, in conjunction with the filter screen 16, can reduce the amount of dust and particulate matter in the surrounding air during the screening process. The filter screen can be removed and replaced at any time.

[0049] It should be noted that the ultrasonic vibrating screen body 1, steam generator, electric heating plate 7, drive motor 9 and dust extraction fan 15 are all electrically connected to the controller. The controller is specifically located on one side of the ultrasonic vibrating screen and is not shown in the figure.

[0050] The working process of this utility model:

[0051] Before ultrasonic vibration screening, the device first injects steel slag fine powder into the drying box 3 through the feed pipe 4. (It should be noted that before adding steel slag fine powder, the electric heating plate 7 is energized to raise its temperature to the preset value and then kept at a constant temperature. In addition, the controller controls the steam generator to deliver high-temperature steam to the jacket 5 to heat the steel slag fine powder inside the drying box 3.)

[0052] Then the controller controls the ultrasonic vibrating screen body 1 to work. At this time, the steel slag fine powder falls onto the guide plate 6 and moves with it. The guide plate 6 has a good heat transfer effect, so the steel slag fine powder can be effectively heated twice during the movement and dried. In addition, the guide plate 6 prolongs the residence time of the steel slag fine powder in the drying box 3, thereby improving the drying effect of the steel slag fine powder.

[0053] After the steel slag fine powder is heated and dried, it will eventually fall from the end of the bottom guide plate 6. At this time, the controller controls the drive motor 9 to rotate at high speed, thereby driving several anti-caking blades 8 to move and effectively crush the caking steel slag fine powder. Then, the dried and caking steel slag fine powder will be injected into the ultrasonic vibrating screen body 1 for fine screening. The ultrasonic vibrating screen is an existing technology and its working principle will not be described.

[0054] The above process can effectively reduce the probability of screen blockage when wet steel slag fine powder enters the ultrasonic vibrating screen body 1 for screening, thus improving the screening effect of steel slag ultrafine powder and reducing the maintenance frequency. Drying and ultrasonic vibration screening are designed in one device to improve functionality.

[0055] Compared to existing technologies, this device first dries and effectively breaks up agglomerated steel slag powder before performing fine ultrasonic vibration screening on it. This reduces the probability of the screen becoming clogged if wet steel slag powder is directly fed into the ultrasonic vibrating screen, thus reducing the frequency of subsequent maintenance of the ultrasonic vibrating screen. The screening process for ultrafine steel slag powder is further optimized, and drying and screening are achieved in one device, thereby improving the functionality and performance of the device.

[0056] In some embodiments, the discharge port and the feed port of the hopper 2 are connected by a star-shaped unloader, which is not shown in the figure. In this embodiment, the dried and pulverized steel slag fine powder can be evenly fed into the ultrasonic vibrating screen body 1 through the star-shaped unloader.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A steel slag superfine powder screening device, comprising an ultrasonic vibrating screen body (1), the ultrasonic vibrating screen body (1) comprises a cover (101), a feeding port is formed on the cover (101), characterized in that, It also includes a lower hopper (2), a drying box (3), a feeding pipe (4), a jacket (5), a steam generator, a guide plate (6), an electric heating plate (7), a crushing assembly and an anti-caking blade (8), The lower hopper (2) is fixedly arranged on the ultrasonic vibrating screen body (1) and the discharge port is communicated with the feeding port. The drying box (3) is movably connected with the top of the lower hopper (2) and communicated. The feeding pipe (4) is fixedly arranged on the top of the drying box (3). The jacket (5) is fixedly arranged on the outer wall of the drying box (3) and communicated with the steam generator through the air inlet hose (51). The guide plates (6) are arranged in the drying box (3) in an inclined and staggered manner, and the ends of the guide plates (6) are distributed at intervals with the inner wall of the drying box (3). The electric heating plate (7) is arranged at the bottom of the guide plate (6). The crushing assembly is fixedly arranged in the drying box (3) and below the end of the lowermost guide plate (6). A plurality of anti-caking blades (8) are installed on the crushing assembly.

2. The steel slag superfine powder screening device according to claim 1, characterized in that, The crushing assembly includes a driving motor (9), a crushing roller (10) and a mounting rod (11), the driving motor (9) is fixedly arranged on the drying box (3), the driving motor (9) is connected with the crushing roller (10) arranged in the drying box (3), a plurality of mounting rods (11) are symmetrically fixed on the crushing roller (10), and a plurality of anti-caking blades (8) are equidistantly arranged on each mounting rod (11).

3. The steel slag superfine powder screening device according to claim 2, characterized in that, The anti-caking blade (8) is arc-shaped.

4. The steel slag superfine powder screening device according to claim 1, characterized in that, The jacket (5) is provided with an air outlet pipe (52), and the air outlet pipe (52) is provided with an exhaust valve (53).

5. The steel slag ultrafine powder screening device according to claim 1, characterized in that, The lower hopper (2) and the drying box (3) are provided with ear plates (12) that are opposite and in contact with each other, the ear plates (12) are provided with fixing holes, long screws (13) are matched in the fixing holes, and nuts (14) in contact with the ear plates (12) are threadedly connected on the long screws (13).

6. The steel slag ultrafine powder screening device according to claim 1, characterized in that, The top of the drying box (3) is provided with a dust suction fan (15) on one side of the feeding pipe (4), and a filter screen (16) is movably installed outside the suction port of the dust suction fan (15).

7. The steel slag ultrafine powder screening device according to claim 1, characterized in that, The drying box (3) is made of heat preservation and insulation plate.

8. The steel slag ultrafine powder screening device according to claim 1, characterized in that, The discharge port and the feeding port of the lower hopper (2) are communicated through a star-shaped unloader.

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