CN213050828U

CN213050828U - Bauxite milling machine

Info

Publication number: CN213050828U
Application number: CN202021384310.5U
Authority: CN
Inventors: 刘争气; 程江利
Original assignee: Qinyang Zhongran Refractory Co Ltd
Current assignee: Qinyang Zhongran Refractory Co Ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-04-27
Anticipated expiration: 2030-07-15

Abstract

The utility model relates to a bauxite pulverizer, which comprises a vertical mill body, wherein the vertical mill body comprises a shell, a separator, a mill disk part, a main speed reducer, a main motor, a mill roller part and a hydraulic system, the mill disk part comprises a support, a mill disk and an air guide column, a plurality of first ventilation holes are arranged on the side wall of the support, the air guide column comprises a connector, a support column and a support cap, the periphery of the bottom of the connector is fixedly connected with the inner wall of the support, the top end of the connector is connected with the lower end of the support column, the upper end of the support column is connected with the support cap, the outside of the support column is provided with the mill disk, the bottom of the mill disk is connected with the top end of the support, the center of the mill disk is provided with a second ventilation hole, the upper surface of the mill disk is provided with a mill groove, a lining plate is arranged on the bottom, the utility model discloses can carry out automatically that the powder piece is selected separately, the crocus is efficient, improve work efficiency, reduction equipment cost.

Description

Bauxite milling machine

Technical Field

The utility model relates to a found mill technical field, concretely relates to bauxite milling machine.

Background

Bauxite is also called alumina or bauxite, the main component of which is hydrated alumina containing impurities, generally is a soil-like or stone-like mineral formed by chemical weathering or exogenous action, contains some impurity minerals such as clay minerals, iron minerals, titanium minerals and clastic heavy minerals, and the composition of the bauxite is extremely complex and is a general name of various hydrous alumina ores with different geological sources, such as boehmite, diaspore and gibbsite; some refractory materials are composed of diaspore and kaolinite and are mainly used for smelting aluminum and preparing refractory materials.

Firstly, bauxite raw materials are fed into a calcining furnace to be calcined at high temperature, the calcined materials are crushed by a jaw crusher or a hammer crusher, then the crushed materials need to be subjected to grinding homogenization treatment, the common bauxite grinding machine is a vertical grinding machine, the crushed bauxite materials are powdery or blocky, when the earthy bauxite is ground by a grinding roller in the vertical grinding machine, the stone bauxite buried in the vertical grinding machine can be protected, so that the grinding capacity of the vertical grinding machine is reduced, meanwhile, the blocky bauxite moves to the edge of a grinding disc due to centrifugal force when the grinding disc rotates, and because of gaps among the grinding rollers, some bauxite blocks cannot be ground by the grinding roller in the movement process, but are directly thrown to the edge of the grinding disc, the useless work of feeding is increased, energy is wasted, a material returning mechanism needs to be increased, and the equipment cost is increased.

Disclosure of Invention

For solving the problem that found mill crocus ability is low, needs feed back mechanism to increase equipment cost, the utility model provides a bauxite milling machine, the purpose provides one kind and carries out automatically that the powder piece is selected separately, the crocus is efficient, do not need the found mill of feed back mechanism, improves work efficiency, reduction equipment cost.

In order to realize the purpose, the technical scheme of the utility model is that:

a bauxite pulverizer comprises a vertical mill body, wherein the vertical mill body comprises a shell, a separator coaxially arranged at the upper part in the shell, a mill disc part below the separator, a main speed reducer, a main motor, a mill roller part arranged between the mill disc part and the separator, and a hydraulic system arranged outside the shell below the mill roller part, the main speed reducer is connected with the main motor, a discharge pipe communicated with the separator is arranged at the top end of the shell, an inlet pipe arranged between the separator and the mill disc part is arranged in the middle of the shell, a hot air pipe just facing the mill disc part is arranged at the lower part of the shell, the mill disc part comprises a support, a mill disc and an air guide column arranged in the shell, and the support, the mill disc and the;

the bottom surface of the support is connected with an output shaft of a main speed reducer, the support is a hollow circular truncated cone with a large upper end and a small lower end and an open upper end, an annular array is arranged on the side wall of the support and provided with a plurality of first horizontal bar-shaped ventilation holes, a wind guide column is coaxially connected on a central shaft of the support and comprises a connector, a support column and a support cap, the connector is a circular truncated cone with a small upper end and a large lower end, the periphery of the bottom of the connector is fixedly connected with the inner wall of the support, the joint of the periphery of the bottom surface of the connector and the inner wall of the support is positioned below the first ventilation holes, the top end of the connector is connected with the lower end of the support column, the upper end of the support column is connected with the support cap, the support cap is a cone with a concave spherical bottom surface, the center of the bottom surface of the, the mill top surface is less than and supports the cap bottom surface, the mill is the disc body that the diameter is greater than support top surface diameter, and the mill center is provided with the diameter that the diameter is greater than the support column, is less than the second ventilation hole that supports the bottom surface diameter of cap, and the mill upper surface has the annular mill groove of undercut ring form, mill the inner ring in groove and the coincidence of second ventilation hole, mill the bottom surface in groove for the convex cambered surface down, mill and install the welt on the groove bottom surface, the welt is the arc plate body that matches and corresponds with mill groove bottom surface, has a plurality ofly to be the third ventilation hole that the annular array set up on the mill bottom surface, third ventilation hole lower extreme runs through the mill bottom surface and is located the support outside, the outer anchor ring is run through to the upper end, the outer flange parallel and level of the upper end open.

Further, a gap is reserved between the outer side face of the grinding disc and the inner side wall of the shell.

Further, the connecting body, the supporting column and the supporting cap are coaxially arranged.

Furthermore, the center of the bottom surface of the support cap in the shape of a concave spherical surface is positioned on the central axis of the support column.

Furthermore, when the grinding roller part is controlled by the hydraulic system to press on the lining plate, the grinding roller of the grinding roller part is contacted with the arc-shaped bottom end of the upper surface of the lining plate.

Furthermore, a plurality of reinforcing ribs in an annular array shape are arranged between the bottom surface of the grinding disc and the outer side surface of the connecting body.

Furthermore, the reinforcing rib is a vertical quadrilateral plate body, one end of the reinforcing rib faces the axis of the connector, the other end of the reinforcing rib is far away from the axis of the connector, one side edge of the reinforcing rib is connected with the bottom surface of the grinding disc, and the other side edge of the reinforcing rib is connected with the connector.

Further, the reinforcing ribs and the first vent holes are arranged at intervals.

Further, the upper surface of the lining plate is lower than the upper surface of the grinding disc.

Through the technical scheme, the beneficial effects of the utility model are that:

the utility model discloses an air guide post can be located to blow outward by the support column, blows outward along the liner plate surface through supporting cap guide back wind by the mill center, not only accelerates the speed that the bauxite material removed to the liner plate surface, still carries out powder piece to the bauxite material and selects separately, makes likepowder bauxite material blown away, leaves cubic bauxite material and carries out the crocus.

The utility model discloses a third ventilation hole is bloied to the mill center by the outward flange on mill surface, not only can blow back the cubic bauxite material of getting rid of the mill edge and blow back to the welt center and be rolled the crocus once more by the grinding roller, still cooperates the wind formation opposite-flushing vortex of locating by the wind-guiding post, increases the efficiency of selecting separately the powder piece.

The utility model discloses need not sort the bauxite material before reinforced, saved sorting unit, and the bauxite material that the grinding roller can not roll can not appear at the crocus in-process, the disposable crocus of material finishes, does not need feed back device, reduction equipment cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the grinding plate portion of the present invention;

fig. 3 is a sectional view a-a of fig. 2.

The reference numbers in the drawings are as follows: the device comprises a shell 1, a separator 2, a grinding disc part 3, a main speed reducer 4, a main motor 5, a grinding roller part 6, a hydraulic system 7, a discharge pipe 11, a feed pipe 12, a hot air pipe 13, a support 31, a grinding disc 32, an air guide column 33, a reinforcing rib 34, a first vent hole 311, a second vent hole 321, a grinding groove 322, a lining plate 323, a third vent hole 324, a connector 331, a support column 332 and a support cap 333.

Detailed Description

The invention will be further explained with reference to the drawings and the detailed description below:

as shown in fig. 1 to 3, a bauxite pulverizer comprises a vertical mill body, wherein the vertical mill body comprises a housing 1, a separator 2 coaxially arranged at the upper part in the housing 1, a grinding disc part 3 below the separator 2, a main speed reducer 4, a main motor 5, a grinding roller part 6 arranged between the grinding disc part 3 and the separator 2, and a hydraulic system 7 arranged outside the housing 1 below the grinding roller part 6, the main speed reducer 4 is connected with the main motor 5, a discharge pipe 11 communicated with the separator 2 is arranged at the top end of the housing 1, a feed pipe 12 arranged between the separator 2 and the grinding disc part 3 is arranged in the middle of the housing 1, a hot air pipe 13 facing the grinding disc part 3 is arranged at the lower part of the housing 1, the grinding disc part 3 comprises a support 31, a grinding disc 32 and an air guide column 33 arranged in the housing 1, and the support 31, the grinding disc 32 and the air guide column 33;

the bottom surface of the support 31 is connected with an output shaft of the main speed reducer 4, the support 31 is a hollow circular truncated cone with a large upper end, a small lower end and an open upper end, a plurality of horizontal bar-shaped first ventilation holes 311 are arranged on the side wall of the support 31 in an annular array, a wind guide column 33 is coaxially connected to the central shaft of the support 31, the wind guide column 33 comprises a connector 331, a support column 332 and a support cap 333, the connector 331 is a circular truncated cone with a small upper end, the periphery of the bottom of the connector 331 is fixedly connected with the inner wall of the support 31, the connection position of the periphery of the bottom of the connector 331 and the inner wall of the support 31 is positioned below the first ventilation holes 311, the top end of the connector 331 is connected with the lower end of the support column 332, the upper end of the support column 332 is connected with the support cap 333, the support cap 333 is a cone with a concave spherical, the outside cover of the support column 332 of wind-guiding post 33 is equipped with mill disc 32, the mill disc 32 bottom is connected with the top of support 31, the top surface of mill disc 32 is less than the bottom surface of support cap 333, mill disc 32 is the disc body that the diameter is greater than the top surface diameter of support 31, the mill disc 32 center is provided with the diameter that the diameter is greater than support column 332, is less than the second ventilation hole 321 of the bottom surface diameter of support cap 333, the upper surface of mill disc 32 has the annular mill groove 322 of undercut, the inner ring and the second ventilation hole 321 coincidence of mill groove 322, the bottom surface of mill groove 322 is the convex cambered surface down, install welt 323 on the mill groove 322 bottom surface, welt 323 is the arc plate body that matches with mill groove 322 bottom surface, is equipped with a plurality of third ventilation holes 324 that are the setting of annular array on the mill disc 32 bottom surface, third ventilation hole 324 lower extreme runs through the mill disc 32 bottom surface and is located the outside of, the bottom surface of the upper end opening of the third ventilation hole 324 is flush with the outer edge of the upper surface of the liner plate 323.

A gap is reserved between the outer side surface of the grinding disc 32 and the inner side wall of the shell 1.

The connecting body 331, the supporting column 332 and the supporting cap 333 are coaxially arranged.

The center of the bottom surface of the support cap 333 in the form of a concave spherical surface is located on the central axis of the support column 332.

The hydraulic system 7 controls the grinding roller of the grinding roller part 6 to contact with the arc-shaped bottom end of the upper surface of the lining plate 323 when the grinding roller part 6 presses on the lining plate 323.

A plurality of reinforcing ribs 34 in an annular array are arranged between the bottom surface of the grinding disc 32 and the outer side surface of the connecting body 331.

The reinforcing rib 34 is a vertical quadrilateral plate, one end of the reinforcing rib 34 faces the axis of the connecting body 331, the other end of the reinforcing rib is far away from the axis of the connecting body 331, one side of the reinforcing rib 34 is connected with the bottom surface of the grinding disc 32, and the other side of the reinforcing rib is connected with the connecting body 331.

The reinforcing ribs 34 are spaced apart from the first vent holes 311.

The upper surface of the liner plate 323 is lower than the upper surface of the grinding disc 32.

When the device is used, before feeding, the bauxite materials do not need to be sorted, the bauxite materials enter the shell 1 through the feeding pipe and fall on the air guide column 33 of the grinding disc part 3, hot air is blown into the space between the support 31 and the shell 1 through the hot air pipe 13 or enters the support 31 and is blown upwards through the air guide column 33, the powdery bauxite materials are blown away by the air due to the rotation of the grinding disc part 3 and the air blow below the air guide cap of the air guide column 33, the residual massive bauxite materials quickly move into the grinding groove 322 and are rolled by the grinding roller to form powder, the third air through holes 324 blow air from the outer edge of the grinding groove 322 to the center of the grinding disc 32, and the air at the air guide column 33 forms a pair-rushing vortex, so that the efficiency of sorting the powder blocks is increased, the powdery bauxite is quickly blown away, the grinding efficiency is improved, and the massive bauxite materials which are not rolled by the grinding roller due to the gap between the grinding rollers in the moving process are influenced by the air blow of the third through holes, will return to the center of the grinding groove 322 to be rolled again by the grinding roller to grind the powder, the material is ground once

The utility model discloses a wind post 33 can be located to blow outward by support column 332, blows outward along welt 323 surface through supporting cap 333 guide back wind by mill 32 center, not only accelerates the speed of bauxite material to welt 323 surface removal, still carries out the powder piece to the bauxite material and selects separately, makes likepowder bauxite material blown away, leaves cubic bauxite material and carries out the crocus.

The utility model discloses a third ventilation hole 324 is bloied to mill 32 center by the outward flange on mill 32 surface, not only can blow back the cubic bauxite material of getting rid of mill 32 edge and blow back to welt 323 center and roll the crocus once more by the grinding roller, still cooperates the wind formation by wind guide post 33 department to the rush vortex, increases the efficiency of selecting separately to the powder piece.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made to the technical solution of the present invention within the scope of the present invention as disclosed without departing from the spirit of the present invention.

Claims

1. The utility model provides a bauxite milling machine, includes founds the mill body, found the mill body and include casing (1), coaxial setting in casing (1) in separator (2) on upper portion, mill dish portion (3) of separator (2) below, main reducer (4), main motor (5), set up grinding roller portion (6) and grinding roller portion (6) below between mill dish portion (3) and separator (2) and place casing (1) outer hydraulic system (7) in, main reducer (4) are connected main motor (5), casing (1) top is provided with discharging pipe (11) that communicate separator (2), and casing (1) middle part has inlet pipe (12) of placing in between separator (2) and mill dish portion (3), and casing (1) lower part has hot-blast main (13) to mill dish portion (3), its characterized in that, mill dish portion (3) are including placing support (31) in casing (1) in, The grinding disc (32) and the air guide columns (33), and the support (31), the grinding disc (32) and the air guide columns (33) are coaxial;

the output shaft of main reducer (4) is connected to support (31) bottom surface, support (31) be big-end-up, down-end-open's cavity circular truncated cone body, and annular array has a plurality of bar first ventilation holes (311) that are the level form on support (31) lateral wall, coaxial connection has air guide post (33) on support (31) center pin, air guide post (33) are including connector (331), support column (332) and support cap (333), connector (331) are big-end-up's circular truncated cone, connector (331) bottom periphery and support (31) inner wall fixed connection, and the junction of connector (331) bottom surface periphery and support (31) inner wall is located first ventilation hole (311) below, and connector (331) top connection support column (332) lower extreme, support column (332) upper end is connected with support cap (333), support cap (333) are concave spherical cone body for the bottom surface, support bottom surface center joint support post (332) upper end of cap (333), it is less than separator (2) lower extreme to support cap (333) top, the outside cover of support post (332) of wind-guiding post (33) is equipped with mill (32), mill (32) bottom is connected with support (31) top, and mill (32) top surface is less than and supports cap (333) bottom surface, mill (32) are greater than the disc body of support (31) top surface diameter for the diameter, and mill (32) center is provided with the diameter that the diameter is greater than support post (332), is less than second vent hole (321) of the bottom surface diameter of supporting cap (333), and mill (32) upper surface has annular mill groove (322) of undercut, mill the inner ring and second vent hole (321) coincidence of groove (322), and the bottom surface of mill groove (322) is the cambered surface of convexity down, install welt (323) on mill groove (322) bottom surface, the lining plate (323) is an arc-shaped plate body which is matched with the bottom surface of the grinding groove (322), a plurality of third ventilation holes (324) which are arranged in an annular array are formed in the bottom surface of the grinding disc (32), the lower ends of the third ventilation holes (324) penetrate through the bottom surface of the grinding disc (32) and are positioned outside the support (31), the upper ends of the third ventilation holes penetrate through the outer ring surface of the grinding groove (322), and the bottom surfaces of the upper end openings of the third ventilation holes (324) are flush with the outer edge of the upper surface of the lining plate (323).

2. A bauxite mill according to claim 1, characterized in that there is a gap between the outer side of the grinding disc (32) and the inner side wall of the housing (1).

3. A bauxite mill according to claim 1, characterized in that the coupling bodies (331), the supporting columns (332) and the supporting caps (333) are coaxially arranged.

4. A bauxite mill according to claim 1, characterized in that the centre of the bottom surface of the support cap (333) in the form of a concave spherical surface is located on the central axis of the support column (332).

5. A bauxite mill according to claim 1, characterized in that the hydraulic system (7) controls the grinding rollers of the roller section (6) to contact the curved bottom end of the upper surface of the lining plate (323) when the roller section (6) is pressed against the lining plate (323).

6. A bauxite mill according to claim 1, characterized in that a plurality of ribs (34) are arranged in an annular array between the bottom surface of the grinding disc (32) and the outer side surface of the coupling body (331).

7. The bauxite mill according to claim 6, wherein the reinforcing rib (34) is a vertically-shaped quadrangular plate body, one end of the reinforcing rib (34) faces the axis of the connecting body (331), the other end of the reinforcing rib is far away from the axis of the connecting body (331), one side of the reinforcing rib (34) is connected with the bottom surface of the grinding disc (32), and the other side of the reinforcing rib is connected with the connecting body (331).

8. A bauxite mill according to claim 7, characterised in that the reinforcing ribs (34) are spaced from the first ventilation holes (311).

9. A bauxite mill according to claim 1, characterized in that the upper surface of the lining plate (323) is lower than the upper surface of the grinding disc (32).