Vertical mill with function of removing iron in mill

Abstract

The utility model relates to the technical field of vertical mill equipment, in particular to a vertical mill with an in-mill iron removal function. According to the technical scheme, the device comprises a mounting frame, a grading assembly is fixedly mounted at the top of the mounting frame, a grinding assembly is fixedly mounted at the top of the grading assembly, a scrap suction assembly is arranged at the top of the grinding assembly, the scrap suction assembly comprises an upper shell, and a winding group is wound around the periphery of the upper shell; a protective shell is fixedly installed on the periphery of the upper shell, and a feeding port and a powder selecting assembly are fixedly connected to the top wall of the upper shell in an inserted mode. Based on the electromagnetic induction principle, after the winding group is electrified, the upper shell generates magnetism, small-particle-size scrap iron in internal circulation materials can be effectively adsorbed, the scrap iron treatment efficiency is improved, meanwhile, secondary abrasion of the scrap iron in internal circulation particle flow to the grinding roller is avoided, erosive abrasion to the inner wall of the upper shell is reduced, and the service life of the grinding roller is prolonged. And the overall service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical mill equipment, in particular to a vertical mill with the function of removing iron in the mill. Background Art

[0002] Vertical mill is an ideal large-scale grinding equipment, widely used in cement, electric power, metallurgy, chemical industry, non-metallic minerals and other industries. It integrates crushing, drying, grinding, grading and conveying, has high production efficiency, and can grind block, granular and powdered raw materials into the required powdered materials. Vertical mill is often used in the production of some fine powders.

[0003] In the prior art, there is a vertical roller mill internal iron removal device applied for with patent number: 202021463361.7, which is installed on the grinding disc, and the top of the grinding disc is provided with a circle of upwardly protruding outer edge; a grinding disc lining made of wear-resistant material is provided above the grinding disc, and the grinding disc lining is tightly attached to the inner side of the outer edge, and there is material between the grinding roller and the grinding disc lining; a material retaining ring is fixed above the outer edge; the iron removal device includes an annular shell, the outer side of the annular shell is tightly attached to the inner side of the material retaining ring, the bottom of the annular shell is in contact with the grinding disc lining, and a plurality of guide plates for facilitating the upward movement of the material are welded at equal intervals on the inner side of the annular shell, and the angle between the guide plates and the horizontal plane is α.

[0004] Although the above-mentioned vertical roller mill internal iron removal device can achieve the effect of discharging the enriched elemental iron in the mill through the arrangement of guide plates, etc., this structure is only conducive to the discharge of large-size iron chips and is ineffective for small-size iron chips in the internal circulation. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a vertical mill with the function of removing iron inside the mill.

[0006] To achieve this object, the utility model adopts the following technical scheme: a vertical mill with an in-mill iron removal function, comprising a mounting frame, a grading assembly is fixedly mounted on the top of the mounting frame, a grinding assembly is fixedly mounted on the top of the grading assembly, a chip suction assembly is arranged on the top of the grinding assembly, the chip suction assembly comprises an upper shell, a winding group is wound around the periphery of the upper shell, a protective shell is fixedly mounted on the periphery of the upper shell, and a feed port and a powder selection assembly are fixedly plugged into the top wall of the upper shell.

[0007] Preferably, the grading assembly includes a lower shell fixedly mounted on the top of the mounting frame, a wind ring is fixedly inserted into the bottom wall of the lower shell, a grinding disc is fixedly mounted on the top of the wind ring, and a discharge gap is formed between the outer walls of the wind ring and the grinding disc and the inner wall of the lower shell.

[0008] Preferably, a plurality of slag discharge ports are evenly and fixedly inserted into the bottom wall of the lower shell.

[0009] Preferably, the grinding assembly comprises a middle shell fixedly mounted on the top of the lower shell, and a plurality of grinding rollers are fixedly inserted into the side wall of the middle shell.

[0010] Preferably, a sealing flange 1 is fixedly installed on the top of the middle shell, and a sealing flange 2 is fixedly installed on the bottom of the upper shell, and the sealing flange 2 matches the sealing flange 1.

[0011] Preferably, the powder selection assembly includes a mounting seat fixedly inserted on the top wall of the upper shell body, a powder selection cover is fixedly installed on the bottom of the mounting seat, a powder selection machine is rotatably installed on the bottom of the mounting seat, and the powder selection machine is located inside the powder selection cover, a motor is fixedly installed on the top of the mounting seat, and the output end of the motor passes through the mounting seat and is fixedly connected to the top of the powder selection machine.

[0012] Preferably, the winding set is electrically connected to an external DC rectifier.

[0013] The beneficial effects of the utility model are as follows: the air ring is started to discharge large particles and large-size iron filings to the outside through the slag discharge port, and the motor is started to drive the powder classifier to rotate. The classified small particles and small-size iron filings are lifted into the powder selection cover by wind force for secondary classification. During the lifting process, the small particles and small-size iron filings energize the winding group to make the upper shell generate magnetism, and the small-size iron filings in the particle flow are adsorbed on the inner wall of the upper shell. After the secondary classification is completed, the winding group is powered off, and the small-size iron filings adsorbed on the inner wall of the upper shell slide along the inner wall of the middle shell, and are discharged to the outside through the slag discharge port after passing through the discharge gap for collection and treatment. The device is based on the principle of electromagnetic induction. After the winding group is energized, the upper shell generates magnetism, which can effectively adsorb small-size iron filings in the internal circulation material, improve the efficiency of processing iron filings, and at the same time avoid the secondary wear of the grinding roller by the iron filings in the internal circulation particle flow, reduce the erosion and wear on the inner wall of the upper shell, and improve the overall service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view schematic diagram of the overall structure of an embodiment of a vertical mill with an in-mill iron removal function according to the utility model;

[0015] Figure 2 It is a front cutaway schematic diagram of the overall structure of an embodiment of a vertical mill with an in-mill iron removal function according to the utility model;

[0016] Figure 3 The utility model is a vertical mill with a mill iron removal function. Figure 2 A is an enlarged schematic diagram of the overall structure.

[0017] Figure numerals: 1. mounting frame; 2. grading assembly; 21. lower shell; 22. air ring; 23. grinding disc; 24. discharge gap; 25. slag discharge port; 3. grinding assembly; 31. middle shell; 32. grinding roller; 33. sealing flange one; 4. chip suction assembly; 41. upper shell; 42. winding group; 43. protective shell; 44. sealing flange two; 5. powder selection assembly; 51. mounting seat; 52. powder selection machine; 53. motor; 54. powder selection cover. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0019] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0021] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0022] Embodiment 1

[0023] like Figure 1-3As shown, the utility model proposes a vertical mill with an in-mill iron removal function, comprising a mounting frame 1, a grading component 2 is fixedly mounted on the top of the mounting frame 1, a grinding component 3 is fixedly mounted on the top of the grading component 2, a chip suction component 4 is arranged on the top of the grinding component 3, the chip suction component 4 comprises an upper shell 41, a winding group 42 is wound around the periphery of the upper shell 41, a protective shell 43 is fixedly mounted on the periphery of the upper shell 41, and a feed port and a powder selection component 5 are fixedly inserted on the top wall of the upper shell 41.

[0024] In this embodiment: the grading component 2 includes a lower shell 21 fixedly mounted on the top of the mounting frame 1, a wind ring 22 is fixedly inserted into the bottom wall of the lower shell 21, a grinding disc 23 is fixedly mounted on the top of the wind ring 22, and a discharge gap 24 is formed between the outer walls of the wind ring 22 and the grinding disc 23 and the inner wall of the lower shell 21. Through this arrangement, the air ring 22 can be started to blow air toward the discharge gap 24 to form an upward wind force; a plurality of slag discharge ports 25 are fixedly and evenly inserted into the bottom wall of the lower shell 21. Through this arrangement, the ground material is discharged through the slag discharge ports 25; the grinding component 3 includes a middle shell 31 fixedly mounted on the top of the lower shell 21, a plurality of grinding rollers 32 are fixedly inserted into the side wall of the middle shell 31. Through this arrangement, the material in the grinding disc 23 can be ground by starting the plurality of grinding rollers 32.

[0025] Embodiment 2

[0026] like Figure 1-3 As shown, the utility model proposes a vertical mill with an in-mill iron removal function. Compared with the first embodiment, a sealing flange 33 is fixedly installed on the top of the middle shell 31, and a sealing flange 44 is fixedly installed on the bottom of the upper shell 41, and the sealing flange 44 matches the sealing flange 33. Through this arrangement, it is convenient to assemble or disassemble the upper shell 41 and the middle shell 31; the powder selection component 5 includes a mounting seat 51 fixedly plugged on the top wall of the upper shell 41, and a powder selection cover 54 is fixedly installed on the bottom of the mounting seat 51. A powder selector 52 is rotatably mounted at the bottom of the seat 51, and the powder selector 52 is located inside the powder selection cover 54; a motor 53 is fixedly mounted on the top of the mounting seat 51, and the output end of the motor 53 passes through the mounting seat 51 and is fixedly connected to the top of the powder selector 52. Through this arrangement, the starting motor 53 drives the powder selector 52 to rotate, and performs secondary classification on the fine powder entering the powder selection cover 54; the winding group 42 is electrically connected to an external DC rectifier. Through this arrangement, the winding group 42 is energized to make the upper shell 41 magnetic.

[0027] Working principle: When using this device, start the grinding roller 32 to grind the material in the grinding disc 23. After grinding, start the air ring 22 to discharge the large particles and large-size iron filings to the outside through the slag discharge port 25. At the same time, start the motor 53 to drive the powder classifier 52 to rotate. The classified small particles and small-size iron filings are lifted by wind to the powder selection cover 54 for secondary classification. During the lifting process, the small particles and small-size iron filings energize the winding group 42, so that the upper shell 41 generates magnetism, and the small-size iron filings in the particle flow are adsorbed on the inner wall of the upper shell 41. After the secondary classification is completed, the winding group 42 is powered off, and the small-size iron filings adsorbed on the inner wall of the upper shell 41 slide down along the inner wall of the middle shell 31, and are discharged to the outside through the slag discharge port 25 after passing through the discharge slit 24 for collection and treatment.

[0028] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A vertical mill with in-mill iron removal function, characterized in that: The invention comprises a mounting frame (1), a grading assembly (2) is fixedly mounted on the top of the mounting frame (1), a grinding assembly (3) is fixedly mounted on the top of the grading assembly (2), a chip suction assembly (4) is arranged on the top of the grinding assembly (3), the chip suction assembly (4) comprises an upper shell (41), a winding group (42) is wound around the periphery of the upper shell (41), a protective shell (43) is fixedly mounted on the periphery of the upper shell (41), and a feed port and a powder selection assembly (5) are fixedly plugged into the top wall of the upper shell (41).

2. A vertical mill with in-mill iron removal function according to claim 1, characterized in that: The grading assembly (2) comprises a lower shell (21) fixedly mounted on the top of the mounting frame (1); an air ring (22) is fixedly inserted into the bottom wall of the lower shell (21); a grinding disc (23) is fixedly mounted on the top of the air ring (22); and a discharge gap (24) is formed between the outer walls of the air ring (22) and the grinding disc (23) and the inner wall of the lower shell (21).

3. A vertical mill with in-mill iron removal function according to claim 2, characterized in that: The bottom wall of the lower shell (21) is evenly and fixedly plugged with a plurality of slag discharge ports (25).

4. A vertical mill with in-mill iron removal function according to claim 3, characterized in that: The grinding assembly (3) comprises a middle shell (31) fixedly mounted on the top of the lower shell (21), and a plurality of grinding rollers (32) are fixedly inserted into the side wall of the middle shell (31).

5. A vertical mill with in-mill iron removal function according to claim 4, characterized in that: A sealing flange 1 (33) is fixedly mounted on the top of the middle shell (31), and a sealing flange 2 (44) is fixedly mounted on the bottom of the upper shell (41), and the sealing flange 2 (44) matches the sealing flange 1 (33).

6. A vertical mill with in-mill iron removal function according to claim 1, characterized in that: The powder selection component (5) comprises a mounting seat (51) fixedly plugged onto the top wall of the upper shell (41); a powder selection cover (54) is fixedly mounted on the bottom of the mounting seat (51); a powder selection machine (52) is rotatably mounted on the bottom of the mounting seat (51), and the powder selection machine (52) is located inside the powder selection cover (54); a motor (53) is fixedly mounted on the top of the mounting seat (51), and an output end of the motor (53) passes through the mounting seat (51) and is fixedly connected to the top of the powder selection machine (52).

7. A vertical mill with in-mill iron removal function according to claim 1, characterized in that: The winding set (42) is electrically connected to an external DC rectifier.

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