CN216261128U - Cloth scraper and vertical mill - Google Patents

Abstract

The utility model relates to a cloth scraper and a vertical mill, wherein the cloth scraper comprises a cloth blade matched with a grinding disc, and the cloth blade is in an arc shape protruding towards the outside of a blade where the cloth blade is arranged; the vertical grinding machine comprises a machine shell, a grinding disc arranged in the machine shell in a mode of rotating along a vertical shaft, a grinding roller arranged above the grinding disc and rotating relative to the grinding disc, and the cloth scraper. The material distribution scraper can adjust the thickness of materials passing through the material distribution blade along the circumferential direction and the thickness of materials in the grinding disc radial direction, and can crush the materials passing through the material distribution blade, so that the aim of improving the grinding quality of a vertical grinding machine is fulfilled; in addition, the vertical grinding machine of the utility model ensures that the grinding precision of the materials is consistent while considering the grinding efficiency, thereby achieving the purpose of improving the grinding quality of the vertical grinding machine.

Description

Cloth scraper and vertical mill

Technical Field

The utility model relates to the technical field of solid material grinding, in particular to a cloth scraper and a vertical grinder.

Background

The vertical mill is a grinding device integrating fine crushing, drying, grinding, powder selecting and conveying, and is widely used for grinding and superfine grinding of various solid materials in the industries of cement, building materials, electric power, metallurgy, chemical industry, non-metal ores and the like. The grinding process of the vertical mill is completed by a set of grinding devices (namely a grinding roller and a grinding disc), and the surface of the grinding disc is provided with an arc concave surface matched with the grinding roller. The grinding device is driven by the grinding disc to rotate and drive the grinding roller to rotate, and the grinding pressure is mainly used for pressurizing the grinding disc material by a set of hydraulic device except the self weight of the grinding roller, so that the material is ground into powder between the grinding roller and the grinding disc.

At present, the residence time of the material on the grinding disc is mainly determined by three factors: firstly, the grinding disc speed influencing the centrifugal force; the friction between the material and the grinding disc and the internal friction of the material; thirdly, the structural form and the matching between the grinding disc and the grinding roller which determine the motion stroke mode. When the existing vertical mill mills, materials are fed through an opening above the vertical mill, so that the thickness of the materials distributed on the grinding disc is easily inconsistent, the friction between the materials and the grinding disc and the internal friction of the materials fluctuate greatly, the difference of the thickness of the materials distributed on the grinding disc is increased, and finally, the grinding quality of the materials on the grinding disc is greatly different and needs to be improved. Therefore, the cloth scraper is designed and applied to a vertical grinding machine, so that the thickness of the cloth of the material on the grinding disc tends to be consistent, and the grinding quality is guaranteed.

SUMMERY OF THE UTILITY MODEL

In view of the defects of the prior art, the first object of the utility model is to provide a cloth scraper which has the advantage of improving the grinding quality of a vertical grinder.

A second object of the present invention is to provide a vertical mill which has the advantage of improving the milling quality.

In order to achieve the first object, the utility model provides the following technical scheme:

a cloth scraper and a vertical mill comprise a cloth blade matched with a grinding disc, wherein the cloth blade is in an arc shape protruding towards the outside of a blade where the cloth blade is located; the arc length of the distributing blade is set to enable the distributing blade to interfere with materials on the grinding disc, and one end, close to the outer edge of the grinding disc, of the distributing blade is higher than one end, close to the inner edge of the grinding disc, of the distributing blade.

By adopting the technical scheme, after the distributing blade is installed and used, the arc-shaped edge of the distributing blade can cover the materials on the radial section of the grinding disc so as to be convenient for interfering and contacting with the materials; when the materials on the grinding disc are stacked too thick, the materials on the upper layer are directly blocked by the material distribution blade, so that the materials pass through the material distribution blade according to a preset thickness, the material distribution thickness of the materials on the grinding disc tends to be consistent, and the grinding quality is ensured; meanwhile, the material distributing blade can be used for primarily crushing the passing materials through the friction force between the material distributing blade and the materials and between the material distributing blade and the materials, so that the grinding quality of the materials is further improved; in addition, as the materials on the grinding disc are acted by centrifugal force in the rotating process, the materials tend to move towards the outer edge of the grinding disc, and the arc-shaped edge of the material distributing blade is set to be in a shape with a high outer part and a low inner part, the materials with the over-thick outer edge of the grinding disc can be guided to move towards the inner edge, the material distributing thickness of the materials on the grinding disc is further ensured to tend to be consistent, and the grinding quality of the vertical grinding machine is improved; to sum up, through design the cloth sword for with mill matched with arc to the arc limit that makes the cloth sword is interior low outer high shape, can not only adjust along the material thickness of circumference through the cloth sword and the mill upwards to the thickness of material, can also carry out the breakage to the material through the cloth sword, thereby has reached the purpose that improves vertical mill grinding quality.

The utility model is further configured to: the cloth cutting edge is arranged on the blade, and the blade is arranged on the mounting bracket through a cylindrical pair, so that the position of the cloth cutting edge in the vertical direction can be adjusted.

Through adopting above-mentioned technical scheme, the installing support is used for installing the blade on vertical mill, and the clearance height between rethread cylinder pair adjustment cloth sword and the mill and the radial contained angle between cloth sword and the mill to adjust the material on the mill to predetermined thickness.

The utility model is further configured to: the mounting bracket comprises a plurality of positioning gaskets, positioning angle steel arranged on the positioning gaskets, mounting gaskets, a mounting pipe arranged on the mounting gasket and lapped on the inner wall of the positioning angle steel, a locking gasket arranged on the mounting pipe, and a first fastener penetrating and fixed on the locking gasket and the positioning angle steel, wherein the cylinder pair is arranged on the mounting gasket.

Through adopting above-mentioned technical scheme, the installing support sets up to split type structure, and wherein, the locating washer is used for installing on vertical mill, and the mounting washer is used for supplying the cylinder vice and blade installation, and the equipment angle steel of location again with install the pipe can, the operation is simple and easy swift.

The utility model is further configured to: be provided with the stiffener between locating washer and the location angle steel, the location angle steel is perpendicular relative to the locating washer, connect between stiffener, locating washer and the location angle steel and be triangle-shaped.

Through adopting above-mentioned technical scheme, stiffener, locating washer and location angle steel are whole to be right triangle, can improve the bearing capacity to the installation pipe to guarantee the stable installation of blade on the installing support.

The utility model is further configured to: the cylindrical pair comprises an adjusting rod, a plurality of pairs of adjusting blocks sleeved on the adjusting rod, second fasteners fixed on part of the adjusting blocks and the mounting bracket in a penetrating mode, and third fasteners fixed on each pair of adjusting blocks in a penetrating mode, wherein the blades are arranged on the adjusting rod.

Through adopting above-mentioned technical scheme, after loosening the third fastener, can be along adjusting pole axial displacement and rotatory blade, and then play the purpose of adjustment blade position.

The utility model is further configured to: the blades are arranged in parallel and are fixedly connected through a fourth fastener.

Through adopting above-mentioned technical scheme, these blades pass through the fourth fastener and mutually paste and fix together, can improve the life of its cloth sword when guaranteeing the broken performance of blade.

In order to achieve the second object, the utility model provides the following technical scheme:

a vertical grinding mill comprising a housing, a grinding disc rotatably mounted in said housing along a vertical axis, a grinding roller mounted above said grinding disc for rotation relative to said grinding disc, and a cloth scraper as described above mounted in said housing with a cloth edge facing said grinding disc and said cloth edge being aligned with and approximately at the same level as the grinding surface of said grinding roller.

Through adopting above-mentioned technical scheme, the clearance height between cloth sword and the mill is close with the clearance height between grinding roller and the mill, enables the material when the grinding roller, and the frictional force between material and the mill is suitable with the internal friction of material self, when giving consideration to milling efficiency, makes the precision of milling of material tend to unanimously to vertical mill grinding quality's purpose has been reached.

The utility model is further configured to: the cloth scrapers and the grinding rollers are respectively provided with at least two, and the cloth scrapers and the grinding rollers are arranged in a staggered mode along the circumferential direction of the grinding disc.

Through adopting above-mentioned technical scheme, the material all need through the broken and cloth of cloth scraper before grinding through every grinding roller, can avoid the thickness change after the material mills to guarantee the quality of milling.

In conclusion, the beneficial technical effects of the utility model are as follows:

1. the cloth scraper is characterized in that the cloth blade is designed into an arc shape matched with the grinding disc, and the arc edge of the cloth blade is in a shape with a low inner part and a high outer part, so that the thickness of materials passing through the cloth blade along the circumferential direction and the thickness of materials passing through the grinding disc in the radial direction can be adjusted, and the materials passing through the cloth blade can be crushed, and the aim of improving the grinding quality of the vertical grinding machine is fulfilled;

2. the vertical mill makes the friction between the material and the grinding disc and the internal friction of the material proper when the material passes through the grinding roller by installing the material scraper which is close to the grinding roller in height, and makes the grinding precision of the material consistent while considering the grinding efficiency, thereby achieving the purpose of improving the grinding quality of the vertical mill.

Drawings

FIG. 1 is a schematic view of a partial structure of a vertical mill of the present invention.

Fig. 2 is a schematic view of the connection between the cloth doctor, the abrasive disc and the casing of the present invention.

Fig. 3 is a cross-sectional structural schematic view of the mounting bracket of the present invention.

Fig. 4 is a schematic view of the connection between the distribution blade, grinding roll and housing of the present invention.

In the figure, 1, a housing; 2. a grinding disc; 3. grinding the roller; 4. a cloth scraper; 5. a cloth blade; 6. mounting a bracket; 61. positioning the gasket; 62. positioning angle steel; 63. a reinforcing bar; 64. installing a gasket; 65. installing a pipe; 66. a locking washer; 67. a first fastener; 7. a blade; 71. a fourth fastener; 8. a cylindrical pair; 81. adjusting a rod; 82. an adjusting block; 83. a second fastener; 84. and a third fastener.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the utility model clearer and easier to understand, the utility model is further explained in the following with the accompanying drawings and the detailed description.

Referring to fig. 1, the vertical mill disclosed in the present invention comprises a housing 1, a grinding disc 2 rotatably mounted in the housing 1 along a vertical axis, three grinding rollers 3 mounted above the grinding disc 2 to rotate relative to the grinding disc 2, and three cloth scrapers 4 mounted in the housing 1 with a cloth edge 5 facing the grinding disc 2. Wherein the cloth scrapers 4 and the grinding rolls 3 are arranged alternately in the circumferential direction of the grinding disc 2.

Meanwhile, the cloth edge 5 is arranged to match with the grinding disc 2 and is arranged in an arc shape protruding towards the outside of the blade 7 where the cloth edge 5 is located, and the cloth edge 5 is aligned with and approximately at the same height as the grinding surface of the grinding roller 3. In order to enable the cloth blade 5 to be in full contact with the materials on the grinding disc 2, the arc length of the cloth blade 5 is set to enable the cloth blade 5 to interfere with the materials on the grinding disc 2, and one end, close to the outer edge of the grinding disc 2, of the cloth blade 5 is higher than one end, close to the inner edge of the grinding disc 2.

Through designing cloth sword 5 into with mill 2 matched with arc to the arc limit that makes cloth sword 5 is interior low outer high shape, can not only adjust along circumference through the material thickness of cloth sword 5 and the mill 2 upwards to the thickness of material, can also carry out the breakage to the material through cloth sword 5, thereby has reached the purpose that improves vertical mill grinding quality. In addition, the gap height between the material distributing blade 5 and the grinding disc 2 is close to the gap height between the grinding roller 3 and the grinding disc 2, materials are crushed and distributed by the material distributing scraper 4 before being ground by each grinding roller 3, the change of the thickness of the materials after being ground can be avoided, the friction force between the materials and the grinding disc 2 is appropriate to the internal friction force of the materials, the grinding efficiency is considered, the grinding precision of the materials is consistent, and the purpose of improving the grinding quality of the vertical grinding machine is achieved.

Referring to fig. 2, in particular, the cloth blade 4 includes a mounting bracket 6 for mounting on the casing 1 and a pair of blades 7. The cloth edge 5 is arranged on the blade 7, and the blade 7 is arranged on the mounting bracket 6 through the cylindrical pair 8, so that the position of the cloth edge 5 in the vertical direction can be adjusted. Wherein, in the height position, the distributing edge 5 is arranged in alignment with and approximately at the same height as the grinding surface of the grinding roller 3; in the angular position, the radial included angle between the cloth blade 5 and the grinding disc 2 is-30 degrees to 30 degrees. The mounting bracket 6 is used for mounting the blade 7 on the vertical grinding machine, and then the gap height between the material distribution blade 5 and the grinding disc 2 and the included angle between the material distribution blade 5 and the grinding disc 2 in the radial direction are adjusted through the cylindrical pair 8, so that the material on the grinding disc 2 can be adjusted to be in a preset thickness.

Referring to fig. 2 and 3, the mounting bracket 6 includes two positioning spacers 61 for being fixedly mounted on the casing 1, a positioning angle iron 62 disposed on the positioning spacer 61, a reinforcing rod 63 disposed between the positioning spacer 61 and the positioning angle iron 62, a mounting spacer 64, a mounting tube 65 disposed on the mounting spacer 64 and overlapping the inner wall of the positioning angle iron 62, a locking spacer 66 disposed on the mounting tube 65, and a first fastener 67 passing through and fixed to the locking spacer 66 and the positioning angle iron 62. The positioning angle iron 62 is vertical relative to the positioning gasket 61, and the reinforcing rod 63, the positioning gasket 61 and the positioning angle iron 62 are connected in a triangular mode. Meanwhile, the first fastening member 67 is a bolt equipped with a nut, the nut of the first fastening member 67 abuts against the locking washer 66, and the bolt abuts against the positioning angle iron 62. The mounting bracket 6 is of a split structure, the reinforcing rod 63, the positioning gasket 61 and the positioning angle steel 62 are integrally in a right-angled triangle shape, and bearing capacity of the mounting pipe 65 can be improved, so that stable mounting of the blade 7 on the mounting bracket 6 is guaranteed. Wherein, the locating gasket 61 is used for installing on vertical mill, and the installation gasket 64 is used for supplying the installation of cylinder pair 8 and blade 7, and the reassembly locating angle steel 62 and installation pipe 65 can, the operation is simple and easy swift.

Referring to fig. 4, the cylindrical pair 8 includes an adjusting rod 81, two pairs of adjusting blocks 82 sleeved on the adjusting rod 81, a second fastening member 83 fixed on a part of the adjusting blocks 82 and the mounting pad 64, and a third fastening member 84 fixed on each pair of adjusting blocks 82. Wherein the pair of blades 7 are arranged in parallel on the adjustment lever 81, and the pair of blades 7 are fixedly connected by the fourth fastening member 71. The second fastener 83, the third fastener 84, and the fourth fastener 71 are respectively provided as bolts without nuts; the bolt of the second fastener 83 is in threaded connection with the adjusting block 82 and abuts against the mounting gasket 64; the bolt of the third fastener 84 is threadedly connected to the adjustment block 82 adjacent to the mounting pad 64 and abuts against the other adjustment block 82; the bolt of the fourth fastening member 71 abuts against the outermost one of the blades 7 and is screwed to the other blades 7. After the third fastening member 84 is loosened, the blade 7 can be moved and rotated in the axial direction along the adjustment lever 81, thereby achieving the purpose of adjusting the position of the blade 7. Meanwhile, the blades 7 are mutually attached and fixed together through the fourth fastening piece 71, so that the crushing performance of the blades 7 can be ensured, and the service life of the cloth edge 5 can be prolonged.

The implementation principle of the embodiment is as follows: after the material distribution blade 5 is installed and used, the arc-shaped edge of the material distribution blade 5 can cover the material on the radial section of the grinding disc 2 so as to be in interference and contact with the material; when the materials on the grinding disc 2 are stacked too thick, the materials on the upper layer are directly blocked by the material distributing blade 5, so that the materials pass through the material distributing blade 5 according to a preset thickness, the material distributing thickness of the materials on the grinding disc 2 is further consistent, and the grinding quality is ensured; meanwhile, the material distributing blade 5 can carry out primary crushing on the passing materials through the friction force between the material distributing blade 5 and the materials and between the material and the material, so that the grinding quality of the materials is further improved; in addition, because the material receives the effect of centrifugal force at rotatory in-process on the mill 2, the material has the trend of the motion of mill 2 outer fringe, sets up to the shape that the high inside is low outside through the arc limit of cloth sword 5, can guide the motion of the too thick material of mill 2 outer fringe to the inner fringe, further guarantees that the cloth thickness of the material on mill 2 tends to unanimously, improves the quality of milling of vertical mill.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (8)

1. A cloth scraper, its characterized in that: the grinding disc type grinding machine comprises a cloth blade (5) used for being matched with a grinding disc (2), wherein the cloth blade (5) is arranged to be in an arc shape protruding towards the outer part of a blade (7) where the cloth blade is located; the arc length of the distributing blade (5) is set to enable the distributing blade (5) to interfere with materials on the grinding disc (2), and one end, close to the outer edge of the grinding disc (2), of the distributing blade (5) is higher than one end, close to the inner edge of the grinding disc (2).

2. A cloth scraper as claimed in claim 1, characterized in that: the cloth cutting device is characterized by further comprising a mounting support (6) and a blade (7), wherein the cloth cutting edge (5) is arranged on the blade (7), and the blade (7) is mounted on the mounting support (6) through a cylindrical pair (8) so that the position of the cloth cutting edge (5) in the vertical direction can be adjusted.

3. A cloth scraper as claimed in claim 2, characterized in that: the mounting bracket (6) comprises a plurality of positioning gaskets (61), positioning angle steel (62) arranged on the positioning gaskets (61), mounting gaskets (64), a mounting pipe (65) arranged on the mounting gaskets (64) and lapped on the inner wall of the positioning angle steel (62), a locking gasket (66) arranged on the mounting pipe (65), and a first fastener (67) fixed on the locking gasket (66) and the positioning angle steel (62) in a penetrating manner, wherein the cylinder pair (8) is arranged on the mounting gaskets (64).

4. A cloth scraper as claimed in claim 3, characterized in that: be provided with stiffener (63) between locating pad (61) and location angle steel (62), location angle steel (62) is perpendicular relative locating pad (61), it is triangle-shaped to connect between stiffener (63), locating pad (61) and the locating angle steel (62).

5. A cloth scraper as claimed in claim 2, characterized in that: the cylindrical pair (8) comprises an adjusting rod (81), a plurality of adjusting blocks (82) sleeved on the adjusting rod (81), second fasteners (83) fixed on part of the adjusting blocks (82) and the mounting bracket (6) in a penetrating mode, and third fasteners (84) fixed on each pair of the adjusting blocks (82) in a penetrating mode, wherein the blades (7) are arranged on the adjusting rod (81).

6. A cloth scraper as claimed in claim 2, characterized in that: the number of the blades (7) is at least two, and the blades (7) are fixedly connected through a fourth fastener (71).

7. A vertical mill comprising a casing (1), a grinding disc (2) rotatably mounted in the casing (1) along a vertical axis, a grinding roller (3) mounted above the grinding disc (2) for rotation relative to the grinding disc (2), characterized in that: the cloth scraper (4) of any one of claims 1 to 6, wherein the cloth scraper (4) is installed in the machine shell (1) in a manner that a cloth edge (5) faces the grinding disc (2), the radial included angle between the cloth edge (5) and the grinding disc (2) is-30 degrees to 30 degrees, and the cloth edge (5) is aligned with the grinding surface of the grinding roller (3) and approximately at the same height.

8. A vertical mill according to claim 7, wherein: the cloth scrapers (4) and the grinding rollers (3) are respectively provided with at least two, and the cloth scrapers (4) and the grinding rollers (3) are arranged in a staggered mode along the circumferential direction of the grinding disc (2).

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