Automatic iron powder recovery device for a mill

Abstract

The utility model relates to a kind of automatic recovery device of mill iron powder, including slag conveying mechanism and the iron powder conveying mechanism being installed in the one side of slag conveying mechanism, at least two separation components are fixedly installed between slag conveying mechanism and iron powder conveying mechanism, two separation components alternately adsorb the iron powder in the granular slag on slag conveying mechanism and transfer the iron powder after separation into iron powder conveying mechanism;After the grinding of mill, the granularity of slag is uniform and stable, the slag is in steady moving state on slag conveying mechanism, separation component can carry out uniform speed scanning type adsorption to slag layer, can more fully capture iron powder;Compared with the iron powder recovery device built in mill, the iron powder separation process of the application is carried out in open conveying environment, the adsorbed iron powder can be quickly transferred to iron powder conveying mechanism, avoid secondary mixing with slag dust, significantly improve the efficiency of recovery iron powder.

Description

Technical Field

[0001] This utility model relates to the technical field of iron powder recovery devices, and more particularly to an automatic iron powder recovery device for mills. Background Technology

[0002] Mills crush and grind large slag particles into finer slag particles. However, the iron powder in the slag particles generated by the mill needs to be separated before entering the next process. Existing mills usually have iron powder recovery devices installed. For example, the recovery device in a vertical mill is usually set above the grinding disc and between the two grinding rollers. This arrangement will interfere with the air outlet area and air velocity of the air ring when the material on the grinding disc is thrown towards the air ring, affecting the smoothness of the internal flow field of the vertical mill, reducing the stability of the vertical mill, and also reducing the iron removal effect. Utility Model Content

[0003] The purpose of this invention is to provide an automatic iron powder recovery device for mills, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: an automatic iron powder recovery device for a mill, including a slag conveying mechanism and an iron powder conveying mechanism installed on one side of the slag conveying mechanism. At least two separation components are fixedly installed between the slag conveying mechanism and the iron powder conveying mechanism. The two separation components alternately adsorb the iron powder in the granular slag on the slag conveying mechanism and transfer the separated iron powder into the iron powder conveying mechanism.

[0005] Compared with the prior art, the beneficial effects of this solution are as follows: the slag particles after grinding by the mill are uniform and stable, the slag moves smoothly on the slag conveying mechanism, the separation component can capture the iron powder mixed in the slag, and the two separation components work alternately, one separation component adsorbs and the other separation component transfers the separated iron powder. Compared with the iron powder recovery device built into the mill, the iron powder separation process of this application is carried out by adsorption in the slag conveying environment. The adsorbed iron powder can be quickly transferred to the iron powder conveying mechanism, avoiding secondary mixing with slag dust, and significantly improving the efficiency of iron powder recovery.

[0006] In a preferred embodiment of this application, the separation component includes two parallel support frames. One end of the support frame is fixedly installed on the slag conveying mechanism, and the other end is fixedly installed on the iron powder conveying mechanism. A magnetic suction box is slidably arranged between the two support frames, and an electromagnetic chuck is installed inside the magnetic suction box.

[0007] Compared with existing technologies, the beneficial effects of this solution are as follows: When the magnetic chuck slides above the slag conveying mechanism, it generates a strong magnetic force to attract iron powder when energized; when it slides above the iron powder conveying mechanism, it de-energizes and the iron powder can automatically fall into the conveying mechanism without manual intervention, achieving fully automated recycling of adsorption and transfer; at the same time, the magnetic strength of the electromagnetic chuck can be adjusted by the current, which can adapt to the differences in iron powder content in different slags, ensuring the adsorption effect while avoiding energy waste, improving recycling efficiency while reducing energy consumption.

[0008] As a preferred embodiment of this application, a flow-adjusting frame is also fixedly installed on the slag conveying mechanism, which spreads the granular slag on the slag conveying mechanism.

[0009] Compared with existing technologies, the beneficial effects of this solution are as follows: When slag flows out of the mill outlet and falls onto the slag conveying mechanism through the receiving hopper, the slag tends to accumulate in the center of the slag conveying mechanism in a small hill-like shape. By setting up the flow frame, the problem of excessively thick slag accumulation is eliminated, which prevents the separation component from separating the slag powder near the bottom of the slag conveying mechanism. This ensures that the separation component can completely separate the slag. At the same time, the magnetic force generated by the separation component acts on the slag area, improving energy utilization and indirectly reducing operating costs.

[0010] As a preferred embodiment of this application, the flow rack includes a receiving hopper located directly above the slag conveying mechanism, and a notch is provided on one side of the bottom of the receiving hopper for the passage of granular slag.

[0011] Compared with existing technologies, the beneficial effects of this solution are as follows: The receiving hopper of this solution first buffers and temporarily stores the incoming slag. No matter how the feed rate fluctuates, the receiving hopper can first accommodate the slag, and then guide it through the notch on one side of the bottom: the slag flows out from the notch and naturally spreads on the conveying mechanism, forming a uniform slag layer with a thickness controlled by the height of the notch. This avoids uneven spreading caused by feed fluctuations, reduces slag breakage and splashing, and ensures stable spreading effect.

[0012] In a preferred embodiment of this application, at least one scraper is provided on one side of the receiving hopper, and a through hole for the granular slag to pass through is provided between the scraper and the slag conveying mechanism, the height of the through hole being less than the height of the notch.

[0013] Compared with existing technologies, the beneficial effects of this solution are as follows: when the slag passes through the notch, the bottom of the receiving hopper performs a first scraping of the slag accumulated on the slag conveying mechanism; when the slag passes through the through hole, the scraper performs a second scraping of the slag accumulated on the slag conveying mechanism, further reducing the difference between the slag thickness on both sides of the slag conveying mechanism and the slag thickness at the center of the slag conveying mechanism; making the slag thickness on both sides of the slag conveying mechanism and the slag thickness at the center of the slag conveying mechanism basically the same.

[0014] In a preferred embodiment of this application, guide plates are provided at both ends of the scraper, with the ends of the guide plates extending toward the receiving hopper.

[0015] Compared with existing technologies, the beneficial effects of this solution are: by setting the guide plate, the slag is brought closer to the center of the slag conveying mechanism, so that the subsequent magnetic chuck can better separate the iron powder in the slag.

[0016] In addition to the technical problems solved by the present invention, the technical features constituting the technical solutions, and the advantages brought about by the technical features of these technical solutions as described above, other technical problems that the present invention can solve, other technical features contained in the technical solutions, and the advantages brought about by these technical features will be further described in detail with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a perspective view of the automatic iron powder recovery device for the mill in this application.

[0018] Explanation of reference numerals: 01. Slag conveying mechanism, 02. Iron powder conveying mechanism, 03. Support frame, 04. Conveyor belt, 05. Horizontal frame, 06. Support frame, 07. Magnetic chuck, 08. Drive cylinder, 09. Electromagnetic chuck, 10. Baffle, 11. Receiving hopper, 12. Notch, 13. Scraper, 14. Through hole, 15. Guide plate. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0020] Please see Figure 1 As shown, the automatic iron powder recovery device for the mill in this embodiment includes a slag conveying mechanism 01 installed directly below the mill outlet, and an iron powder conveying mechanism 02 on one side of the slag conveying mechanism 01. The slag conveying mechanism 01 includes a support 03 and two rollers installed inside the support 03. The two rollers are installed parallel to each other inside the support 03, and a conveyor belt 04 is sleeved between the two rollers. A drive source, preferably a servo motor, is installed on the support 03. The output end of the drive source is connected to one of the rollers via a synchronous belt or gear transmission. When the servo motor is working, it drives one of the rollers to rotate. The rotation of the roller drives the conveyor belt 04 to rotate between the two rollers. When slag falls onto the conveyor belt 04, the conveyor belt 04 transports the slag. It should be noted that the iron powder conveying mechanism 02 and the slag conveying mechanism 01 have the same structure in this example, and will not be described again here.

[0021] At least two identical separation components are fixedly installed between the slag conveying mechanism 01 and the iron powder conveying mechanism 02 by fasteners. The separation components separate the iron powder from the slag conveyed on the slag conveying mechanism 01 and transfer the separated iron powder to the iron powder conveying mechanism 02. The iron powder conveying mechanism 02 then transfers the separated iron powder to a specific location for recycling. The two separation components alternately adsorb the slag on the slag conveying mechanism 01.

[0022] For example, if the two separation components are designated as Separation Component No. 1 and Separation Component No. 2, when both are directly above the slag conveying mechanism 01, Separation Component No. 1 starts working to separate iron powder from the slag on the conveying mechanism 01, while Separation Component No. 2 stops working. When the iron powder separated on Separation Component No. 1 needs to be transferred to Iron Powder Conveying Mechanism 02, Separation Component No. 2 starts working again to continue separating iron powder from the slag on the conveying mechanism 01. After the iron powder separated on Separation Component No. 1 is transferred to Iron Powder Conveying Mechanism 02 and then returns to the conveying mechanism 01, Separation Component No. 1 stops working. When the iron powder separated on Separation Component No. 2 needs to be transferred to Iron Powder Conveying Mechanism 02, Separation Component No. 1 restarts working. This allows the two separation components to alternately and continuously separate the slag on the conveying mechanism 01.

[0023] A flow divider 05 is fixedly installed on the support 03 of the slag conveying mechanism 01 by fasteners. The flow divider 05 spreads the slag accumulated on the slag conveying mechanism 01 flat on the slag conveying mechanism 01, so that the separation component can separate the iron powder in the slag.

[0024] The separation assembly includes two parallel support frames 06. One end of each support frame 06 is fixedly mounted on a slag conveying mechanism 01 by fasteners, and the other end is fixedly mounted on an iron powder conveying mechanism 02 by fasteners. A magnetic suction box 07 is slidably disposed between the two support frames 06. A drive cylinder 08 is mounted on one of the support frames 06 to drive the magnetic suction box 07 to slide between the two support frames 06. The output end of the drive cylinder 08 is fixedly connected to the magnetic suction box 07. An electromagnetic chuck 09 is installed inside the magnetic suction box 07.

[0025] In operation, the output end of the drive cylinder 08 extends, driving the magnetic chuck 07 to move from directly above the iron powder conveying mechanism 02 towards the slag conveying mechanism 01. When the output end of the drive cylinder 08 is fully extended, the magnetic chuck 07 is positioned directly above the slag conveying mechanism 01, forming a channel with the conveyor belt 04 within the slag conveying mechanism 01. The electromagnetic chuck 09 is energized to generate suction. When the slag passes through the electromagnetic chuck 09, the iron powder within the slag is attracted to the magnetic chuck 07 under the action of the electromagnetic chuck 09. After a period of operation, the output end of the drive cylinder 08 retracts, causing the magnetic chuck 07 to move from the slag conveying mechanism 01 to directly above the iron powder conveying mechanism 02. The electromagnetic chuck 09 is de-energized, and the suction disappears. The iron powder attracted to the magnetic chuck 07 falls onto the iron powder conveying mechanism 02 and is transferred to another location for collection.

[0026] The flow control frame 05 includes two baffles 10 fixedly mounted on the support 03. The two baffles 10 are arranged parallel to each other directly above the conveyor belt 04. The baffles 10 and the support 03 are fixedly connected by a connecting plate. A receiving hopper 11 is installed between the two baffles 10, located directly above the conveyor belt 04. The two sides of the receiving hopper 11 are fixedly connected to the two baffles 10 respectively by fasteners. The bottom of the receiving hopper 11 is close to the conveyor belt 04. The receiving hopper 11 is designed to prevent slag from splashing outside the conveyor belt 04 when it falls from the mill into the conveyor belt 04.

[0027] A notch 12 is provided on one side of the bottom of the receiving hopper 11 for slag to pass through. When the slag flows out of the mill outlet and falls onto the conveyor belt 04 through the receiving hopper 11, the slag tends to accumulate in the center of the conveyor belt 04 in a small hill shape, resulting in less slag accumulating on both sides of the conveyor belt 04. When the conveyor belt 04 passes through the notch 12, the top of the slag accumulated on the conveyor belt 04 is scraped flat, causing the slag accumulated on the conveyor belt 04 to move to both sides of the conveyor belt 04, thus shortening the difference between the thickness of the slag on both sides of the conveyor belt 04 and the thickness of the slag at the center of the conveyor belt 04.

[0028] At least one scraper 13 is provided on one side of the receiving hopper 11. The two ends of the scraper 13 are fixedly connected to two baffles 10 via connecting seats. The scraper 13 is positioned in the direction of slag flow. A through hole 14 is provided between the scraper 13 and the conveyor belt 04 for the slag to pass through. The height of the through hole 14 is less than the height of the notch 12. When the slag passes through the notch 12, the bottom of the receiving hopper 11 performs a first leveling of the slag accumulated on the conveyor belt 04. When the slag passes through the through hole 14, the scraper 13 performs a second leveling of the slag accumulated on the conveyor belt 04, further reducing the difference in slag thickness between the sides and the center of the conveyor belt 04. The scraper 13 ensures that the slag is evenly spread on the conveyor belt 04, making the slag thickness on the sides and the center of the conveyor belt 04 essentially the same. It should be noted that in this embodiment, two scrapers 13 are provided on one side of the receiving hopper 11. The height of the through hole 14 between the scraper 13 closer to the receiving hopper 11 and the conveyor belt 04 is greater than that between the scraper 13 farther from the receiving hopper 11 and the conveyor belt 04. Therefore, when multiple scrapers 13 are provided on one side of the receiving hopper 11, the height of the through hole 14 between the scraper 13 and the conveyor belt 04 gradually decreases along the flow direction of the slag. Thus, the arrangement of the receiving hopper 11 and at least one scraper 13 ensures that the slag is spread evenly on the conveyor belt 04.

[0029] Guide plates 15 are provided at both ends of the scraper 13. The ends of the guide plates 15 extend toward the receiving hopper 11. The guide plates 15 are designed to bring the slag as close as possible to the center of the conveyor belt 04, so that the subsequent magnetic chuck can better separate the iron powder in the slag.

[0030] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An automatic iron powder recovery device for a mill, characterized in that, It includes a slag conveying mechanism and an iron powder conveying mechanism installed on one side of the slag conveying mechanism. At least two separation components are fixedly installed between the slag conveying mechanism and the iron powder conveying mechanism. The two separation components alternately adsorb the iron powder in the slag on the slag conveying mechanism and transfer the separated iron powder into the iron powder conveying mechanism.

2. The automatic iron powder recovery device for mills according to claim 1, characterized in that: The separation assembly includes two parallel support frames. One end of the support frame is fixedly installed on the slag conveying mechanism, and the other end is fixedly installed on the iron powder conveying mechanism. A magnetic suction box is slidably arranged between the two support frames, and an electromagnetic chuck is installed inside the magnetic suction box.

3. The automatic iron powder recovery device for mills according to claim 1, characterized in that: A flow divider is also fixedly installed on the slag conveying mechanism, which spreads the slag on the slag conveying mechanism evenly.

4. The automatic iron powder recovery device for mills according to claim 3, characterized in that: The flow rack includes a receiving hopper located directly above the slag conveying mechanism, with a notch on one side of the bottom of the receiving hopper for slag to pass through.

5. The automatic iron powder recovery device for mills according to claim 4, characterized in that: At least one scraper is provided on one side of the receiving hopper, and a through hole for slag to pass through is provided between the scraper and the slag conveying mechanism. The height of the through hole is less than the height of the notch.

6. The automatic iron powder recovery device for mills according to claim 5, characterized in that: The scraper is equipped with guide plates at both ends, with the ends of the guide plates extending toward the receiving hopper.

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