JPH051062B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vertical crushing device for crushing solid materials such as coal and limestone.

[Conventional technology]

A conventional vertical crusher is usually constructed as shown in FIG. That is, in the same figure, 1 is the casing of the vertical crusher installed on the foundation;
Reference numeral 2 denotes a material supply pipe to be crushed, which is arranged at the center of the top wall of the casing 1 so that its axis coincides with the center of the casing 1, and 3 is a pedestal (not shown) installed at the center of the bottom of the casing 1. ), and is rotatably driven by a drive source (not shown), and the saucer 3 is arranged so that its center of rotation coincides with the center of the casing 1. A liner 31 for preventing wear is attached to the holder. Reference numeral 4 denotes a truncated conical crusher rotatably supported on the tip of the support shaft 5 so as to rotate with the rotation of the saucer 3 while being pressed against the upper surface of the liner 31 by a pressing means to be described later. In the roller, the base of the support shaft 5 is supported via a support shaft 9 by a support member 11 fixed at a suitable position outside the side wall of the casing 1 as shown in the figure, so as to be able to swing up and down about the support shaft 9. In addition, a lever 10 is connected to the base as shown in the figure. Reference numeral 12 denotes a pressing means for pressing the roller 4 against the upper surface of the liner 31, and the pressing means 12 causes the roller 4 to be pressed against the upper surface of the outer peripheral edge of the saucer 3 around the support shaft 9 via the lever 10. When the crushing capacity of the crushing device is small, a compression spring is generally used as the pressing means 12, but as the crushing capacity increases, the pressing force of the roller 4 against the tray 3 needs to be increased, so it is usually used as the pressing means 12. , a hydraulic system is used. Note that the roller 4 and its accompanying members are arranged in plural sets (usually 2 to 2) at regular intervals along the circumferential direction of the casing 1.
4 sets) are arranged. Reference numeral 6 denotes a hot gas introduction pipe disposed on the side wall of the casing 1 slightly below the saucer 3. The hot gas introduction pipe 6 is connected to a hot air source or a hot gas source (not shown), and the hot gas introduction pipe 6 The hot air or hot gas introduced into the casing from above rises in the gap between the outer circumferential end surface of the receiving tray 3 and the inner circumferential surface of the side wall of the casing 1 as an upward air current. 7 is a coarse powder separator disposed inside the casing 1 as shown, and 8 is a fine powder outlet pipe. The material to be crushed is introduced into the casing 1 through the material supply pipe 2, The material to be crushed is fed to the vicinity of the center of the upper surface of the mortar-shaped saucer 3, but the material to be crushed is moved to the upper surface of the outer peripheral edge of the liner 31 by the centrifugal force of the rotating saucer 3, and is pressed against the liner 31 by the pressing means 12.
After being compressed and pulverized by the roller 4 which is pressed against the upper surface of the container 3, the material is thrown out from the upper surface of the outer periphery toward the outer periphery of the saucer 3. The pulverized material thus compressed and pulverized and discharged toward the outer periphery of the tray 3 is dried by the hot air or hot gas on the upward current of the hot air or hot gas from the hot gas introduction pipe 6. The powder rises and enters the upper coarse powder separator 7, where it is separated into fine powder and coarse powder.The fine powder is discharged to the outside from the fine powder outlet pipe 8 along with air or gas, and the coarse powder falls onto the lower tray 3. Then, together with the material to be crushed that is newly supplied from the material to be crushed supply pipe 2, both of the materials are crushed.
By repeating the above operations, the material to be crushed is crushed into a desired fine powder.

[Problem that the invention seeks to solve]

The liner 31 and the roller 4 wear together as shown in FIG.
Since the gap 34 between the pulverizer and the outer surface of the pulverizer becomes large, the performance of the pulverizer is significantly reduced. In such a case, in conventional devices, it was possible to bring the roller 4 closer to the surface of the liner 31 by rotating it around the spindle 9 and reduce the gap 34 to some extent, but generally the outer periphery of the roller 4 Since the amount of wear on the surface is uneven in the roller axial direction, the gap 34 can be effectively reduced.
Therefore, the performance of the crushing device has the disadvantage that the performance of the crushing device deteriorates significantly as the liner 31 and roller 4 wear out.

[Means for solving problems]

Therefore, in order to prevent performance deterioration when the rollers and liner wear out in a vertical crusher, the present invention provides a recess on the outer peripheral edge of the liner attached to the upper surface of the saucer, and also provides a shaft that allows the roller to rotate. To provide a vertical crusher in which a supported spindle can be moved inward and outward directions of a casing.

[Effect]

When the roller and liner wear out, the spindle is moved toward the outside of the casing to pull the roller out toward the outer circumference, and the large-diameter end of the roller faces the recess on the outer edge of the liner, reducing the gap between the roller and liner. let

〔Example〕

The present invention will be explained in detail with reference to an embodiment shown in FIG.

1 is the casing of the vertical crusher, 3 is the saucer, 3
1 is a liner attached to the saucer 3, 4 is a roller, 5 is a roller support shaft, 9 is a support shaft, 10 is a lever, 11 is a support member, 12 is a pressing means,
These arrangements are similar to conventional grinding equipment. 1
3 is a bearing of the support shaft 9, and the casing 1 is fixed by several bolts 14 arranged on the outer circumference of the bearing.
and is fixed to the support member 11.

The bearing 13 is eccentric to the support shaft 9, and the position of the support shaft 9 can be adjusted by rotating the bearing 13.

15 is an adjustment bolt, 16 is a nut, and 17 is a stopper assembled integrally with the roller support shaft 5. By adjusting the adjustment bolt 15, the roller 4 rotates around the support shaft 9, and the outer peripheral surface of the roller 4 is rotated. The structure is such that the gap 34 between the liner 31 and the surface of the liner 31 can be adjusted.

A recess A is formed on the outer peripheral side of the liner 31.

FIG. 2 shows that the roller 4 and liner 31 are worn out,
A case where the gap 34 has increased is shown. The end B of the roller 4 facing the outer circumference of the liner 31 is hardly worn, but in a vertical crusher, as shown in FIG. It is possible to adjust the gap 34 so that it becomes smaller. That is, first, the bearing 13
The roller 4 is moved to the outer periphery of the casing 1 of the vertical crusher by rotating the
5 is loosened and pulled out to the outside of the casing 1, and the roller 4 is rotated and dropped around the support shaft 9, whereby the gap 34 can be adjusted to be small. Thereby, deterioration of crushing performance can be prevented.

〔Effect of the invention〕

By moving the roller to the outer circumferential side and adjusting the end of the roller to face the recess of the liner, even if the roller and liner wear out, the gap between the roller and liner can be effectively adjusted. It is possible to prevent performance deterioration of the vertical crusher due to wear.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view of the main part of the embodiment of the present invention, Figs. 2 and 3 are explanatory diagrams explaining the operation of the embodiment of the present invention, and Fig. 4 is a front view of a conventional vertical crusher. The sectional view, FIG. 5, is a diagram showing the state of wear of a conventional vertical crusher. 1...Casing, 3...Saucer, 4...Roller, 5...Roller support shaft, 9...Spin shaft, 10...
Lever, 12... Pressing means, 13... Bearing, 31
...liner, A...dent, B...end.

Claims (1)

[Claims] 1. A vertical crushing device consisting of a roller rotatably supported by a shaft so as to be in pressure contact with a liner attached to the upper surface of a saucer, and in which solid matter is caught between the liner and the roller and crushed, A vertical crushing device, characterized in that a recess is formed in the outer peripheral edge of the liner, and the roller is movably supported in the radial direction of the tray.