JPH04200652A - Vertical crusher - Google Patents

Abstract

PURPOSE:To easily and automatically peel deposit on the internal surface of a chute for introducing a raw material by allowing a cutter to abut on the internal surface of a rotary cylinder, and pushing the cutter to the outside by an energizing means and also rotating the rotary cylinder by a rotating and driving means. CONSTITUTION:A plurality of pieces of grinding rollers 4 are freely rotatably arranged on the upper face of the outer peripheral part of a rotating table 3A. A raw material is supplied through a chute 17 for introducing it. This chute is vertically hung just above the central part of the table 3A. The raw material is ground between the upper surface of the table 3A and the circumferential faces of the rollers 4 by imparting the prescribed grinding pressure to the rollers 4. A thrust bearing 110 is provided on the upper surface of the upper end flange of the chute 17. A rotary cylinder 100 described below, a ring gear 102 used as a rotating and driving means of the rotary cylinder 100, a pinion gear 122 and a motor 120 are provided. The rotary cylinder 100 is supported to the bearing 110 and also inserted into the chute 17 and rotated. Furthermore, a cutter 130 is lengthened in the direction of the inside axis of the rotary cylinder 100 and allowed to abut against the inside of the rotary cylinder. An energizing means 140 is provided which horizontally pushs the cutter to the outside.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides the following advantages:
This relates to a vertical crusher that crushes raw materials such as limestone, blast furnace slag, and cement raw materials.

[Conventional technology 1 Raw materials such as limestone, blast furnace slabs, and cement raw materials are finely processed (
As a type of pulverizer for pulverizing materials into powder, a vertical pulverizer 1 equipped with a rotary table and a pulverizing roller is widely used, as shown in FIG.

This type of crusher includes a disc-shaped rotary table 3A that is driven by a motor 2A and a reducer 2 to rotate at a low speed in the lower part of a cylindrical casing 1a, and a hydraulic pressure installed at a portion that equally divides the outer periphery of the upper surface in the circumferential direction. The crushing roller 4 is provided with a plurality of crushing rollers 4 that are pressed against each other and rotated as a result of rotation.

The crushing roller 4 is connected to a piston rod 10 of a hydraulic cylinder 9 via an arm 5 and an arm 7 that are swingably supported by a shaft 6 on the casing 1a, and by operating the hydraulic cylinder 9, the crushing roller 4 is 4 is pressed onto the rotary table 3A to apply crushing pressure to the raw material.

3B is a dam ring provided on the outer periphery of the rotary table 3A to adjust the raw material bed pressure, 14 is an annular space passage around the rotary table 3A for blowing up gas, 15 is a hot air blowing passage, and 13 is a raw material pulverized by the blade 13A. 16 is an outlet for taking out the product together with the gas, and 17 is a raw material input chute.

In such a vertical crusher, the raw material supplied to the center of the rotary table 3A by the raw material input chute 17 receives centrifugal force in the radial direction of the table due to the rotation of the rotary table 3A, and slides on the rotary table 3A. rotary table 3
It receives a rotational force from A, slides between it and the rotary table 3A, and rotates somewhat slower than the rotation speed of the rotary table 3A. The above two forces, that is, the forces in the radial direction and the force in the rotational direction are combined, and the raw material moves to the outer circumference of the rotary table 3A while drawing a spiral trajectory on the rotary table 3A. Since the roller is in pressure contact with this outer circumferential portion and rotates, the raw material drawing a spiral line enters from a direction forming a certain angle with the axial direction of the cloning roller between the crushing roller 4 and the rotary table 3A and is bitten. crushed and crushed.

On the other hand, air is supplied to the base of the casing 1a by a duct.
Alternatively, gas such as hot air is introduced, and as this gas blows up from the annular space passage 14 between the outer peripheral surface of the rotary table 3A and the inner peripheral surface of the casing, the crushed fine powder is entrained in the gas. The product rises inside the casing 1a and is subjected to a classification action by the blades 13A of the separator 13 located at the top, and products with a predetermined particle size are discharged together with the gas through the discharge port 16.
is discharged from the tank and sent to the next process.

[Problems to be Solved by the Invention] When grinding blast furnace slag, for example, in the conventional vertical crusher as described above, when moisture is mixed in the blast furnace slag, the blast furnace slag has self-hardening properties, and this causes the raw material to be input. When entering the vertical crusher through the chute, the material adheres to the inner surface of the chute that is heated by the hot air gas that is the drying heat source flowing through the vertical crusher, solidifies, and gradually develops and solidifies inside the chute. It narrows (or blocks) the passageway and impedes the smooth supply of raw materials.

The vertical crusher of the present invention is intended to remove raw materials adhering to the inner surface of the raw material input chute and maintain the inner surface in a clean state without stopping the operation of the crusher.

[Means for Solving the Problems] In order to solve the above problems, the vertical crusher of the present invention has a plurality of rotatable crushing rollers disposed on the upper surface of the outer periphery of the rotary table, and In a vertical crusher that applies a predetermined crushing pressure to the crushing roller to crush the raw material supplied via the raw material input chute that hangs directly above it between the top surface of the rotary table and the circumferential surface of the crushing roller, the raw material input chute is A thrust bearing is disposed on the upper surface of the upper end flange, and the rotary cylinder is rotatably supported by the thrust bearing, is fitted in the raw material input chute, and is rotatable, and a rotation drive means for the rotary cylinder. The rotary cylinder is configured to include a cutter extending in the inner axial direction and abutting against the inner periphery of the rotary cylinder, and a means for urging the cutter horizontally outward.

[Function] In the vertical crusher of the present invention, the cutter comes into contact with the inner surface of the rotary cylinder and is pressed outward by the urging means, and the rotary cylinder is rotated by the rotary drive means, so that the cutter does not adhere to the inner surface of the rotary cylinder by feeding the raw material. By scraping off the deposits with the cutter, the inner surface of the rotating cylinder can be kept clean. Continuous operation or arbitrary intermittent operation of the rotating cylinder can be selected depending on the degree of adhesion of the raw material.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

Figures 1 to 5 relate to embodiments of the present invention, in which Figure 1 is an overall vertical sectional view of a vertical crusher, Figure 2 is an enlarged vertical sectional view of main parts, and Figure 3 is Figure 2 ■ Plan view of the view, Figure 4 is Figure 2 TV-
FIG. 5 is an enlarged vertical cross-sectional view of the biasing means of the cutter.

In the figure, 1 is a vertical crusher, 2 is a speed reducer, 2A is an electric motor, 3A is a rotary table, 3B is a dam ring, 4 is a crushing roller, 5 is an arm, 6 is a shaft, 7 is an arm, 8 is a bearing housing , 8a is a bearing, 9 is a hydraulic cylinder, 10 is a piston rod, 13 is a separator, 13A is a separator blade, 14 is an annular space passage, 15 is a hot air blowing passage, 16 is an outlet, and 17 is a raw material input chute; The structure and operation are as described in the prior art.

Reference numeral 100 denotes a rotating cylinder, which is coaxially rotatably disposed via an upper flange 100a on a thrust bearing 110 disposed on the upper surface of the upper flange of the raw material inputting chute 17, and is fitted into the raw material inputting chute. and upper flange 10
Ring gear 102 and pinion gear 12 on the outer periphery of 0a
Due to the meshing of the two, the electric motor 120 drives the rotation.

On the other hand, a cutter 1 is shaped like an axially long plate and has a cutting edge at its tip.
30 is arranged so that the tip of the cutting edge comes into contact with the inner surface of the rotating cylinder,
At the upper and lower ends of the cutter 130, horizontal shafts 130a and 13 are provided, respectively.
1 are disposed to project horizontally outward in the radial direction and are connected to biasing means 140, 141 of the cutter 130. The biasing means 140 and 141 have the same structure, and as shown in FIGS. 3 and 5, for example, at the upper end of the rotary cylinder 130, they are attached to a support 160 protruding from the upper flange of the raw material input chute 17. A spring box 140a held horizontally by a support 150 fastened and fixed with a bolt nut 150a and a cap 140 having a through hole in the center.
The spring box 140a includes a disk 130b and a cap 140 provided at the tip of the horizontal shaft 130a.
The cutter 130 is configured to urge the rotary cylinder 100 outward by a compression coil spring 140C elastically mounted between the cutter 130 and the rotary cylinder 100. The spring box 140a and the cap 140b are screwed together so that the urging force of the compression coil spring 140c can be adjusted.

Similarly, the lower biasing means 141 also supports the support 151.
161 and urges the cutter 130 outward.

This rotary cylinder 100 is placed on a thrust bearing 110 (a radial bearing may be used) provided on the upper surface of the upper end flange of the raw material input chute 17, and is arranged to be rotatable. A gear 102 is fixed to the outer periphery of the upper end flange of the rotating l1Jil 00, and is driven to rotate by meshing with a gear 122 attached to the rotating shaft of an electric motor 120.

When the rotary cylinder 100 of the present invention is operated continuously or intermittently for about 5 minutes every hour, deposits on the inner surface of the rotary cylinder can be easily removed by the shearing action of the cutter 110 along the inner surface of the rotary cylinder. It peels off and keeps the inner surface of the shoot clean.

Although gear transmission is used as the means for driving the rotation of the rotary tube 100, any other means such as chain drive or belt drive may be used.

[Effect of the invention] As explained above, in the vertical crusher of the present invention,
The rotating action of the cutter, which is urged outward and contacts the inner surface of the rotary tube, and the rotary tube, which rotates along the inner surface of the raw material input chute, makes it possible to easily and automatically peel off the deposits on the inner surface of the raw material input chute. Keeps the inner surface of the cylinder clean and ensures smooth supply of raw materials.

[Brief explanation of the drawing]

1 to 5 relate to embodiments of the present invention, in which FIG. 1 is an overall vertical sectional view of a vertical crusher, FIG. 2 is an enlarged vertical sectional view of main parts, and FIG. 3 is FIG. A plan view from III perspective, Fig. 4 is the second
FIG. 5 is a cross-sectional plan view taken along the line V-IV, and FIG. 5 is an enlarged vertical cross-sectional view of the biasing means of the cutter. FIG. 6 is an overall longitudinal sectional view showing a conventional embodiment. 1... Vertical crusher, 2...,...
91. Reducer, 3A...Rotary table, 4...
...... Grinding roller, 17... Raw material input chute, 100... Rotating tube, 1
00a... Upper flange, 102... Ring gear, 110... Thrust bearing, 120...
...Electric motor, 122...Binion gear,
130...Cutter, 130a...Horizontal shaft, 130b...Disc, 131...
horizontal shaft, 140... biasing means, 140a... spring box, 140b... cap, 140c... compression coil spring, 141... biasing means, 150.151, 160,161...Support. Patent applicant: Ube Industries, Ltd. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] (1) A plurality of rotatable crushing rollers are arranged on the upper surface of the outer periphery of the rotary table, and the raw material supplied via the raw material input chute hanging directly above the center of the rotary table is applied to the crushing rollers with a predetermined crushing pressure. In a vertical crusher that grinds between the top surface of a rotary table and the circumferential surface of a crushing roller, a thrust bearing is disposed on the top surface of the upper end flange of the raw material input chute, and the material is supported by the thrust bearing and inside the raw material input chute. A cutter that extends in the inner axial direction of the rotary tube and comes into contact with the inner periphery of the rotary tube, and a cutter that extends in the inner axial direction of the rotary tube and contacts the inner periphery of the rotary tube, and a cutter that extends horizontally to the outside of the cutter. A vertical crusher characterized in that it is equipped with a biasing means.