JPH09276725A - Rotor for granular shape adjusting device and the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotor for a granular shape adjusting device or the like to achieve a uniform wear of each liner of a discharge path. SOLUTION: A rotor for a granular form adjusting device or the like in which materials to be treated fed from above are given centrifugal force to horizontally discharge them is provided with a hollow disc like rotor body 23 provided successively in the upper end part of a vertical rotating shaft 16 rotated by an electric motor and having a discharge path 27 in the radial direction and with a disc like distributor 32 fitted to the center part of the rotor body and whose upper surface is positioned at almost one-half the height of the discharge path.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor such as a grain shape adjuster or an impact type crusher for imparting a centrifugal force to an object to be treated supplied from above and discharging it horizontally in a tangential direction.

[0002]

2. Description of the Related Art Conventionally, as this type of vertical axis type rotor, for example, a rotor for a crushing device disclosed in Japanese Patent Publication No. 53-33785 or a grain shape adjusting device disclosed in Japanese Patent Publication No. 4-9097. It has been known. The former rotor is connected to the upper end of a vertical rotary shaft that is rotated by an electric motor, is attached to the rotor body in the shape of a hollow disk having a radial discharge path, and is attached to the center of the rotor body. It is equipped with a distributor in which a plurality of cylinders that are higher in height toward the center side are concentrically erected, and the workpiece to be supplied that is supplied above and around the rotor is dropped in a stepwise manner by the distributor and supplied to the discharge path. Since it collides with the accumulated hardened body of the object to be treated in the annular housing provided in the above, and is crushed by impact, it is accelerated by centrifugal force and discharged horizontally from the discharge port of the discharge path. The latter rotor is continuously connected to the upper end of a vertical rotating shaft rotated by an electric motor, has a hollow disk-shaped rotor body having a radial discharge path, and a truncated cone attached to the center of the rotor body. It is equipped with a plate-shaped distributor, and after receiving the object to be processed supplied from above by the distributor and supplying it to the discharge path, it is made to flow in an arc shape by the repulsion guide plate of the annular grinding chamber provided around the rotor. In order to adjust the particle shape, the particles are accelerated by centrifugal force and discharged horizontally from the discharge port of the discharge path.

[0003]

However, in all conventional rotors for grain shape adjusters and the like, the object to be treated, which is supplied to the discharge passage by the distributor, is mainly supplied to the bottom plate of the discharge passage. Although a part of the road is protected by the dead stock of the object to be processed, there is a problem that the wear of the bottom liner becomes more severe than that of the side liner and the ceiling liner. Therefore, an object of the present invention is to provide a rotor such as a grain shape adjuster capable of equalizing the wear of each liner of the discharge passage.

[0004]

In order to solve the above problems, the rotor of the first grain shape adjusting machine or the like of the present invention applies a centrifugal force to an object to be processed supplied from above to make it horizontal in the tangential direction. A rotor for a particle shape adjuster or the like for discharging, which is continuously connected to the upper end of a vertical rotation shaft rotated by an electric motor and has a hollow disk-shaped rotor body having a radial discharge path, and a central portion of the rotor body. And a disc-shaped distributor whose upper surface is located approximately in the middle of the height of the discharge path. The rotor of the second grain shape adjuster or the like is characterized in that in the first rotor, a plurality of rectangular plate-shaped cemented carbide chips are attached to a peripheral portion of the upper surface of the distributor, which is opposed to the discharge path. And
Further, the rotor of the third grain shape adjuster or the like is characterized in that, in the second one, the cemented carbide tip is adhered such that the upper surface thereof is appropriately projected from the upper surface of the distributor.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a grain shape adjuster provided with a rotor according to the present invention. In the figure, reference numeral 1 is an upper housing having a hollow circular plate shape having a U-shaped cross section. The upper housing 1 has a bottomed cylindrical shape with a discharge port 2 provided at the center of the bottom, and is vertically mounted on a mount (not shown). The lower housing 3 is continuously connected to the upper end of the lower housing 3 and communicates with the inside of the lower housing 3 through the lower opening 4. A disc-shaped lid 7 provided with a supply port 6 for an object to be processed (not shown) in the center is detachably attached to the upper opening 5 of the upper housing 1. The bottomed cylindrical feed box 9 with the feed tube 8 inserted in the center of the bottom is mounted on the bracket 10.
It is hung coaxially through. On the other hand, around the lower opening 4 of the upper housing 1, in order to adjust the height of the cured body 11 of the object to be processed, which is discharged from the rotor described later and has a conical surface with a required inclination angle and is deposited, A short cylindrical adjustment ring 12 is erected. Then, in cooperation with the conical surface of the hardened body 11 to form the annular abrasion chamber 13 having a substantially C-shaped cross section, the side surface and the ceiling surface in the upper housing 1 and the lower outer side of the feed box 9 are provided with an outer side. Department liner 1
4a, a ceiling liner 14b, and an inner liner 15 are attached.

At the axial center of the lower housing 3, a vertical rotary shaft 16 is disposed with a bearing 17, a bearing housing 18 and a bracket 19 so that the upper end faces the upper housing 1. At the upper end of the vertical rotary shaft 12, a rotor 20 having a small outer diameter is continuously provided from the lower opening 4 of the upper housing 1. The rotor 20 applies a centrifugal force to the object to be processed supplied from the upper feed pipe 8 and horizontally discharges it in the tangential direction toward the conical surface of the hardened body 11, and is configured as follows. That is, as shown in FIGS. 2 and 3, a taper ring 21 is provided on the upper end of the vertical rotation shaft 16.
Is fitted via a key or the like (not shown), and a hollow disk-shaped rotor body 23 having an inlet 22 for the object to be processed provided in the central portion of the upper surface projects from the central portion of the lower surface of the tapered ring 21. It is fitted via the post 24 and attached via the tongue plate 25. The rotor main body 23 is provided with a substantially radial discharge passage 27 having discharge ports 26 at three portions in the circumferential direction, which are divided into three in the circumferential direction on the peripheral surface facing the conical surface of the hardened body 11. Each discharge path 27 is bent in a V shape in the radial direction in order to prevent abrasion by the object to be processed, and the dead stock of the object to be processed is formed on the side surface at the rear in the rotation direction of the rotor 20 (direction indicated by an arrow in FIG. 2). While forming a pocket for forming, the vicinity of the discharge port 26 on the rear side in the rotation direction, the bottom surface and the ceiling surface are respectively covered with a side liner 28 with a carbide tip, a bottom liner 29 and a ceiling liner 30, A plurality of rectangular plate-shaped cemented carbide chips 31 are attached to the upper surface of the bottom liner 29 near the discharge port 26.

A disk-shaped distributor 32 made of high-chromium cast iron is placed in the center of the rotor body 23, and a bolt 34 is attached to the tongue plate 25 from the bottom of a recess 33 provided in the center. By being inserted and screwed into the upper end of the vertical rotation shaft 16, it is fixed to the vertical rotation shaft 16 together with the rotor body 23. The upper surface of the distributor 32 has an upper surface of each of the discharge passages 27.
It is located approximately in the middle of the height of. The distributor 32 discharges the object to be processed supplied from the inlet 22 to the discharge path 2
7, which is for converting the direction to the horizontal direction at a height substantially in the middle of 7 and distributing to each discharge passage 27, and in the peripheral portion of the upper surface thereof at three locations facing each discharge passage 27, as shown in FIG.
As shown in FIG. 5, stepped portions 35 are cut out in a half-moon shape, and a plurality of rectangular plate-shaped cemented carbide tips 36 are formed on each of the stepped portions 35 on the upper surface of the distributor 32.
It is attached so as to appropriately protrude from the upper surface of the. And
On the upper surface of the distributor 32, a peripheral portion between the adjacent step portions 35 is provided with a concave portion 37 for dead stocking an object to be processed in order to prevent abrasion of this portion.

As shown in FIG. 1, a driven pulley 38 is attached to the lower end of the vertical rotary shaft 16, and the driven pulley 32 rotates the electric motor arranged outside the lower housing 3. It is provided so as to be interlocked with a driving pulley and a belt (neither shown) attached to the shaft, and the driven pulley 32 and the belt are covered with a cover 39. In FIGS. 2 and 3, reference numerals 40 and 41 denote grid-shaped paddings provided on the upper surface and the peripheral surface of the rotor body 23, respectively, for preventing abrasion due to the object to be processed.

In order to adjust the particle shape of the object to be processed by the particle shape adjuster having the above structure, first, the electric motor is operated to rotate the rotor 20 at the tip peripheral speed of about 36 to 60 m / s, and the supply port 6 To be processed. The object to be treated is introduced into the rotor 20 from the inlet 22 through the feed pipe 8 of the feed box 9 and is supplied onto the distributor 32, and then is horizontally converted to the respective discharge paths 27 at the same height. The particles are distributed at almost the middle height, and most of them are discharged from each discharge port 26 horizontally in the tangential direction by being accelerated by centrifugal force while sliding in contact with the dead stock at about the middle of the height of each discharge path 27. . Distributor 3 above
Distributor 3 when distributing the processed material by 2
In No. 2, since the end portion of the flow path of the workpiece to be accelerated and flowing is covered with the cemented carbide tip 36, the upper surface of the distributor 32 is appropriately blocked by the cemented carbide tip 36. In addition, the wear of the distributor 32 can be greatly reduced. Further, since most of the object to be processed passing through the discharge passage 27 is fluidized while being in sliding contact with the dead stock at an almost intermediate height, the bottom liner 29
Does not wear unevenly. The rotor 20 described above
Had a durable life of 3 to 4 times that of the conventional one. Especially,
It can be used for grain shape adjustment etc. of a wet method with severe wear (a material with a large amount of mud is put together with water, and the mud is separated, resulting in a marked improvement in product quality). Become. Next, the object to be processed discharged from the discharge port 26 of the rotor 20 collides with the hardened body 11 of the annular abrasion chamber 13 and is rebounded upward, and at the same time, the outer liner 14a, the ceiling liner 14b and the inner liner 14b. After being guided by 15, the spiral abrasion chamber 13 is forced to flow in a spiral shape from the lower side to the upper side, and then falls naturally due to the decrease in kinetic energy. In the above-mentioned flow process, the object to be processed is adjusted into a roundish particle-shaped object by grinding the sharp pointed projections, which are weak in strength, due to mutual collision abrasion and collision with the hardened body 11 and the like. On the other hand, a part of the processed object that naturally falls from the upper portion in the annular polishing chamber 13 collides with a subsequent processed object that is discharged from the discharge port 26 of the rotor 20, and is reflowed together with the subsequent processed object. Further, a processed object that naturally falls without colliding with a subsequent object to be processed naturally drops into the lower housing 3 through the space between the rotor 20 and the adjusting ring 12, and is discharged and discharged as a product from the discharge port 2. It

In the above embodiment, the annular abrasion chamber 13 is provided with the conical surface of the hardened body 11, the outer side liner 14a,
Although the case where it is formed by the ceiling liner 14b and the inner liner 15 has been described, the present invention is not limited to this, and instead of the conical surface of the hardened body 11, a bottom liner having a conical surface may be used. Further, not only when it is used as a rotor of a grain shape adjuster that adjusts the grain shape of the object to be treated, but also a vertical axis type impact that collides the object to be treated with the deposited hardened material or impact plate (anvil) to impact and crush it. You may use as a rotor of a crusher.

[0011]

As described above, according to the rotor of the first grain shape adjusting machine of the present invention, most of the object to be processed horizontally flows to the discharge path by the distributor at an approximately intermediate height. Since it is supplied as described above, uneven wear of the bottom liner does not occur as in the conventional case, and the wear of each liner can be made uniform. According to the rotor of the second grain shape adjuster and the like, in addition to the action and effect of the first one, the end portion of the flow path in the distributor of the workpiece to be accelerated and flowing is covered with the cemented carbide tip. The wear of the distributor can be greatly reduced. Further, according to the rotor of the third grain shape adjuster or the like, in addition to the function and effect of the second one, the upper surface of the distributor serving as the flow path of the object to be processed is covered with the fine particles blocked by the cemented carbide tip. Therefore, the wear can be further reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a grain shape adjuster equipped with a rotor according to the present invention.

FIG. 2 is a partially cutaway plan view showing an example of an embodiment of a rotor according to the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a plan view of a distributor of the rotor of FIG.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

[Explanation of symbols]

 16 Vertical Rotation Axis 23 Rotor Main Body 27 Discharge Path 32 Distributor 36 Carbide Tip

Claims (3)

[Claims] 1. A rotor for a grain shape adjuster or the like that applies a centrifugal force to an object to be processed supplied from above and discharges it horizontally in a tangential direction, the rotor being connected to an upper end of a vertical rotation shaft rotated by an electric motor. A hollow disk-shaped rotor body provided with a discharge path in the radial direction, and a disk-shaped distributor attached to the central portion of the rotor body and having an upper surface positioned approximately in the middle of the height of the discharge path. A rotor for grain shape adjusters, etc. 2. A grain shape adjuster or the like according to claim 1, wherein a plurality of rectangular plate-shaped cemented carbide chips are attached to a peripheral portion of the upper surface of the distributor, the peripheral portion facing the discharge path. Rotor. 3. The rotor for a grain shape adjuster or the like according to claim 2, wherein the cemented carbide tip is adhered such that the upper surface thereof is appropriately projected from the upper surface of the distributor.