Iron discharging device

Abstract

The invention discloses an iron discharging device which comprises a transmission device, a shell, a rotor, an electromagnet, a blowing device, a conductive slip ring, an iron discharging pipe and an electric control detection device.The rotor is arranged in the shell, one end of the rotor is connected with the transmission device, the electromagnet is arranged on the rotor, the blowing device is arranged on one side of the electromagnet, and the conductive slip ring is connected with the iron discharging pipe. An iron discharging pipe is arranged on the other side of the electromagnet, the electromagnet is connected with the conductive sliding ring, and the electric control detection device is used for controlling starting and stopping of the transmission device and the blowing device. The device is simple in structure, good in iron discharging effect and high in automation degree, iron powder in a material layer is effectively discharged on line in real time, stable operation of equipment is guaranteed, the yield of the equipment is improved, and the service life of grinding parts in the mill is prolonged.

Description

Technical Field

[0001] This invention belongs to the technical field of slag vertical mill equipment, specifically relating to an iron removal device. Background Technology

[0002] In recent years, China's annual output of slag powder has exceeded 100 million tons. The most commonly used slag powder production equipment on the market is the vertical roller mill. Its working principle is as follows: the material is fed into the vertical mill and ground by the grinding rollers. As the grinding disc rotates, the material is thrown into the air ring inlet. Most of the fine material is carried by the air into the classifier. After classification, the coarse powder returns to the grinding disc for further grinding, while the qualified fine powder is carried out from the air outlet of the classifier and collected in the bag dust collector.

[0003] Generally, slag contains a certain amount of iron. When the iron content is too high, it not only accelerates the wear of the grinding components inside the mill, but also continuously accumulates at the bottom of the grinding disc, making the material layer unstable, increasing mill vibration, and affecting stable equipment operation. Typically, a process design includes an iron removal device above the mill's slag discharge belt. However, this device can only remove some of the iron discharged with the material, while most of the iron on the material bed may continuously circulate and accumulate inside the mill, making it difficult to discharge. Therefore, a new iron removal device needs to be designed to achieve real-time iron removal from the grinding disc material, ensuring stable equipment operation and extending the service life of the grinding rollers and the wear-resistant layer of the grinding disc. Summary of the Invention

[0004] The purpose of this invention is to provide an iron removal device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an iron removal device, comprising a transmission device, a housing, a rotor, an electromagnet, a blowing device, a conductive slip ring, an iron removal pipe, and an electrical control and detection device. The rotor is disposed within the housing, and one end of the rotor is connected to the transmission device. An electromagnet is disposed on the rotor. A blowing device is disposed on one side of the electromagnet, and an iron removal pipe is disposed on the other side of the electromagnet. The electromagnet is connected to the conductive slip ring. The electrical control and detection device is used to control the start and stop of the transmission device and the blowing device.

[0006] Preferably, the housing consists of a main housing, a bearing seat, a baffle, a tail cover, and a transmission base. The tail cover is located at one end of the main housing, the bearing seat is located inside the main housing for mounting the rotor, the transmission base is located on one side of the main housing for mounting the transmission device, and the baffle is located on both sides of the electromagnet.

[0007] Preferably, the blowing device includes two blowing pipes, and the two blowing pipes are connected to a solenoid valve.

[0008] Preferably, an air seal device is provided on one side of the conductive slip ring. The air seal device includes a sealed air inlet chamber and an air seal hole. The air seal hole is located at the center of the sealed air inlet chamber. One end of the rotor passes through the air seal hole. The sealed air inlet chamber is connected to compressed air through an air seal pipeline.

[0009] Preferably, the air seal pipeline is connected to a manual ball valve to control the air intake flow rate.

[0010] Preferably, the electronically controlled detection device includes an upper sensor, a lower sensor, and a detection sensing block. The detection sensing block is disposed on the rotor, and the upper sensor and the lower sensor are respectively disposed on the upper and lower sides of the detection sensing block.

[0011] Preferably, the upper and lower sensors are arranged symmetrically, with the line connecting the centers of the upper and lower sensors coinciding with the vertical center line and perpendicular to the horizontal center line of the electromagnet, and the center line of the detection sensing block coinciding with the line connecting the centers of the sensors.

[0012] Preferably, when the detection sensing block detects the lower sensor signal, the transmission device stops, and the electromagnet is energized to perform adsorption; when the detection sensing block detects the upper sensor signal, the transmission device stops, and the blowing device performs blowing.

[0013] The technical effects and advantages of this invention are as follows: By adsorbing and discharging iron from the grinding disc material layer in real time online, it effectively prevents the accumulation of iron from interfering with the grinding process, reducing the risk of abnormal equipment vibration and material jamming; the timely removal of iron reduces the grinding resistance of the material, optimizes the grinding efficiency, and thus improves the overall processing capacity; it avoids the wear and damage of iron to grinding rollers, grinding discs and other grinding parts, and significantly extends the service life of core components.

[0014] It can continuously remove iron without stopping the machine, supporting uninterrupted operation of the mill and improving production continuity; it adopts electromagnetic adsorption combined with pneumatic blowing, and after adsorption, it is 180° rotated and blown to ensure that the iron powder falls into the iron discharge pipe in a concentrated manner, and the discharge path is clear and smooth. An air seal device is installed to prevent dust intrusion and protect the conductive slip ring; With its simple structure, good iron removal effect, and high degree of automation, it effectively removes iron powder from the material layer online in real time, ensuring stable equipment operation, increasing equipment output, and extending the service life of grinding components inside the mill. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the workflow of the present invention; Figure 3 This is a schematic diagram showing the location of the invention; Figure 4 This is a schematic diagram of the shell structure; Figure 5 This is a schematic diagram of the external piping layout; Figure 6 This is a schematic diagram of an electronically controlled detection device.

[0016] In the diagram: 1. Transmission device; 2. Housing; 21. Main housing; 22. Bearing seat; 23. Baffle; 24. Tail cover plate; 25. Transmission base; 3. Rotor; 4. Electromagnet; 5. Pulse jetting device; 51. Pulse jetting pipe; 52. Solenoid valve; 6. Conductive slip ring; 7. Iron discharge pipe; 8. Electrical control detection device; 81. Upper sensor; 82. Lower sensor; 83. Detection sensing block; 9. Air sealing device; 91. Sealed air inlet chamber; 92. Air sealing hole; 93. Air sealing pipeline; 11. Wiring conduit; 20. Grinding disc; 30. Grinding disc scraper; 40. Iron remover; 50. Pressure transmitter. Detailed Implementation

[0017] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] like Figure 1 As shown, the purpose of this invention is to remove iron from the grinding disc layer in real time during the operation of a slag vertical mill, ensuring stable mill operation, increasing mill output, and extending the service life of the grinding parts inside the mill. The device consists of a transmission device 1, a housing 2, a rotor 3, an electromagnet 4, a jetting device 5, a conductive slip ring 6, an iron discharge pipe 7, and an electrical control and detection device 8. The rotor 3 is housed within the housing 2, with one end connected to the transmission device 1. An electromagnet 4 is mounted on the rotor 3, with the jetting device 5 mounted on one side of the electromagnet 4 and the iron discharge pipe 7 mounted on the other side. The electromagnet 4 is connected to the conductive slip ring 6. The electrical control and detection device 8 controls the start and stop of the transmission device 1 and the jetting device 5.

[0019] The transmission device is a geared motor with an internal brake, which is installed at the tail of the motor. The motor and the gear reducer are installed as a whole.

[0020] The iron discharge pipe 7 is arranged inside the air duct, and a counterweight airlock valve is installed at the bottom of the iron discharge pipe 7; the iron discharge device can be completely extracted for offline maintenance and repair.

[0021] like Figure 2 and Figure 3As shown, the present invention is arranged between two grinding rollers and fixed in the mill; the iron powder in the material on the grinding disc 20 is attracted by the electromagnet 4, and after being rotated 180° by the transmission device 1, it is blown into the iron discharge pipe 7 by the spraying device 5, and finally falls into the mill air duct. It is scraped out of the mill along with the rest of the material by the grinding disc scraper 30, and finally the iron is discharged by the process iron remover 40 installed on the slag discharge belt. Figure 2 and Figure 3 The four sets of arrows, three in each set, indicate the path for iron powder discharge.

[0022] like Figure 4 As shown, the housing 2 consists of a main housing 21, a bearing seat 22, a baffle 23, a tail cover 24, a transmission base 25, etc. The housing part of the main housing 21 inside the mill and the outer surface of the tail cover 24 are welded to extend the service life of the equipment. The baffle 23 is made of wear-resistant material to prevent iron powder from spreading to both sides during the blowing operation. The flange of the tail cover 24 and the flange of the main housing 21 are connected by a stop fit to ensure the normal operation of the conductive slip ring 6 when the electromagnet 4 is rotating.

[0023] An air seal device 9 is provided in the tail cover plate 24 to prevent dust from entering and damaging the conductive slip ring 6 by connecting external compressed air. The air seal device 9 includes a sealed air inlet chamber 91 and an air seal hole 92. The air seal hole 92 is located in the center of the sealed air inlet chamber 91. One end of the rotor 3 passes through the air seal hole 92. The sealed air inlet chamber 91 is connected to external compressed air through an air seal pipe 93. The air seal pipe 93 is connected to a manual ball valve to control the air intake flow.

[0024] An inspection door is provided at the outermost end of the tail cover plate 24 for inspecting the conductive slip ring 6.

[0025] like Figure 5 As shown, a jetting device 5 is arranged at the tail end of the electromagnet 4. The jetting device 5 includes two jetting pipes 51 connected in parallel, connected to an external solenoid valve 52, and then connected to the compressed air pipeline in the factory. A pressure transmitter 50 is installed on the main intake pipe to detect whether there is compressed air being supplied normally in the pipeline.

[0026] like Figure 6 As shown, a lower sensor 82 is arranged on the transmission base 25, and an upper sensor 81 is arranged on the end cover of the main housing 21. The two sensors are arranged symmetrically, with the center line of the sensors coinciding with the vertical center line and perpendicular to the horizontal center line of the electromagnet 4. A detection sensing block 83 is arranged on the rotor 3, with the center line of the detection sensing block 83 coinciding with the center line of the two sensors, and can rotate synchronously with the rotor shaft.

[0027] The electromagnet 4 has a magnetically conductive metal shell on the outside and an electromagnetic coil winding inside. The wires are led out and connected to a conductive slip ring 6. The conductive slip ring 6 is installed on the tail cover plate 24. The power line is introduced through the wire conduit 11.

[0028] Before the mill is put into normal operation, the pressure transmitter 50 detects that the air pressure is normal. If there is no air pressure, the system alarms. The transmission device 1 starts, the rotor rotates, and the transmission device 1 stops when the lower sensor 82 signal is detected. The transmission device 1 is equipped with an internal brake, which is released when energized and engaged when de-energized. The electromagnet 4 is energized to perform adsorption. The adsorption time can be modified at any time according to the actual situation on site. After the adsorption time ends, the transmission device 1 starts again. The transmission device 1 stops when the upper sensor 81 signal is detected. The compressed air solenoid valve 52 opens to perform the blowing operation. The blowing time can be modified at any time according to the actual situation on site. When the iron powder blown into the iron discharge pipe 7 accumulates to a certain weight, the counterweight valve opens automatically, and the iron powder falls into the mill air duct and is scraped out of the mill by the grinding disc scraper, and is finally removed by the process iron remover. After the blowing time ends, the transmission device 1 starts again, the rotor 3 rotates, and the transmission device 1 stops when the lower sensor signal is detected again. The iron removal operation is repeated in this way.

[0029] This iron removal device has a good iron removal effect, is easy to maintain, and can realize online real-time iron removal, which ensures the stable operation of the mill, increases the output of the equipment, and extends the service life of the grinding parts.

[0030] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An iron removal device, characterized in that, The device includes a transmission device (1), a housing (2), a rotor (3), an electromagnet (4), a jetting device (5), a conductive slip ring (6), an iron discharge pipe (7), and an electrical control detection device (8). The rotor (3) is installed inside the housing (2), and one end of the rotor (3) is connected to the transmission device (1). An electromagnet (4) is installed on the rotor (3). A jetting device (5) is installed on one side of the electromagnet (4), and an iron discharge pipe (7) is installed on the other side of the electromagnet (4). The electromagnet (4) is connected to the conductive slip ring (6). The electrical control detection device (8) is used to control the start and stop of the transmission device (1) and the jetting device (5).

2. The iron removal device according to claim 1, characterized in that: The housing (2) consists of a main housing (21), a bearing seat (22), a baffle (23), a tail cover (24), and a transmission base (25). The tail cover (24) is located at one end of the main housing (21). The bearing seat (22) is located inside the main housing (21) and is used to install the rotor (3). The transmission base (25) is located on one side of the main housing (21) and is used to install the transmission device (1). The baffle (23) is located on both sides of the electromagnet (4).

3. The iron removal device according to claim 1, characterized in that: The blowing device (5) includes two blowing pipes (51), and the two blowing pipes (51) are connected to a solenoid valve (52).

4. The iron removal device according to claim 1, characterized in that: An air seal device (9) is provided on one side of the conductive slip ring (6). The air seal device (9) includes a sealed air inlet chamber (91) and an air seal hole (92). The air seal hole (92) is located at the center of the sealed air inlet chamber (91). One end of the rotor (3) passes through the air seal hole (92). The sealed air inlet chamber (91) is connected to compressed air through an air seal pipe (93).

5. The iron removal device according to claim 4, characterized in that: The air seal pipeline (93) is connected to a manual ball valve to control the air intake flow.

6. The iron removal device according to claim 1, characterized in that: The electronic control detection device (8) includes an upper sensor (81), a lower sensor (82) and a detection sensing block (83). The detection sensing block (83) is disposed on the rotor (3), and the upper sensor (81) and the lower sensor (82) are respectively disposed on the upper and lower sides of the detection sensing block (83).

7. The iron removal device according to claim 6, characterized in that: The upper sensor (81) and the lower sensor (82) are arranged symmetrically, with the center line connecting the upper sensor (81) and the lower sensor (82) coinciding with the vertical center line and perpendicular to the horizontal center line of the electromagnet 4. The center line of the detection sensing block (83) coincides with the center line connecting the sensors.

8. The iron removal device according to claim 6, characterized in that: When the detection sensing block (83) detects the signal from the lower sensor (82), the transmission device (1) stops, and the electromagnet (4) is energized to perform adsorption work; when the detection sensing block (83) detects the signal from the upper sensor (81), the transmission device (1) stops, and the blowing device (5) performs blowing work.

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