JPH105610A - Horizontal ultra-fine crushing mill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform continuous crushing and batch crushing process and thereby improve crushability with a horizontal ultra-fine crushing mill for continuous crushing process. SOLUTION: Outer cylinder blades 7 are provided on the inner wall of an outer cylinder 6 and inner cylinder blades 5 are provided on the outer surface of an inner cylinder 4 and rotated inside the outer cylinder 6. The interior of this mill is filled with balls 8, and a raw material 1 and water 2 are charged into the outer cylinder 6 from a charge aperture 3 in the continuous crushing mode. The raw material 5 is moved by the blades 5, 7 and crushed by the balls 8 to be transferred to an outlet side. Further, the crushed raw material 1 is discharged into a discharge aperture through the discharge opening 10 of a butt strap 11 installed on the upper half of a butt strap support 9. In addition, the butt strap 11 is replaced by a blind patch in the batch crushing mode, and the charge aperture 3 is closed and the operation is continued for a specified time. After the end of the operation, the crushed product is delivered from a discharge screen 20 at the lower part of a manhole 9. The butt strap support 9 has a semi-open part on the top, only on which the butt strap 11 is mounted. A clearance between the outer cylinder 6 and the inner cylinder 4 is sealed with a sealing material 12 and a seal holder 13, so that the incidence of a short pass from the discharge opening 10 is minimized when the raw material 1 is crushed at a low viscosity, and the crushability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry or wet grinding mill, and more particularly to a horizontal ultra-fine grinding mill for continuous grinding.

[0002]

2. Description of the Related Art FIG. 3 is a view showing the inside of a conventional horizontal ultra-fine grinding mill for continuous grinding, FIG. 4 is a sectional view taken along the line BB, and FIG. FIG. In these figures, 1 is a raw material, 2 is water, 3 is an inlet, 4 is a rotating inner cylinder, 5 is a plurality of inner cylinder blades attached to the outer peripheral surface of the inner cylinder 4, 6 is an outer cylinder, and 7 is an outer cylinder. A plurality of outer cylinder wings attached to the inner peripheral surface of the cylinder 6, a ball 8 filled between the inner cylinder 4 and the outer cylinder 6, an eye plate 11 shown in FIG. Then, as shown in FIG. 4, a plurality of (eight in the figure) are attached to the half-opening on the entire surface of the board supporting plate 22.

Reference numeral 14 denotes a discharge port for the pulverized material, reference numeral 15 denotes a discharge direction, and reference numerals 16A and 16B seal the inner cylinder 4 which is rotated with a sealing material at bearings 18A and 18B, respectively.
Reference numerals 7A and 17B denote sealing material retainers that support and press the sealing materials 16A and 16B, respectively, 19 denotes a manhole, and 21 denotes a clearance between the lower portion of the eye plate 11 and the inner cylinder 4.

[0004] In such a configuration, the raw material 1 is charged into the inside of the mill through the charging port 3 (in the case of a wet type, water 2 is also charged). The charged raw material 1 enters the gap between the balls 8 moved by the inner cylinder blades 5 attached in the circumferential direction of the rotating inner cylinder 4, is impacted, crushed, ground, and transferred to the mill outlet side.

The pulverized raw material 1 is compressed by a flow generated by the movement of the ball 8, and the clearance between the discharge opening 10 of the eye panel 11 attached to the eye panel supporting plate 22 and the lower part of the eye panel 11 and the inner cylinder 4. From 21, it passes through the discharge port 14 and becomes the discharge 15. The discharge status during continuous grinding is Clearance 21
Emissions from the majority.

[0006]

In the pulverization in a mill, the pulverization can be sufficiently performed only by the continuous pulverization with the structure of a conventionally provided horizontal ultrafine mill. However, in the case of batch pulverization (a constant amount of raw material is introduced into a mill and the raw material is pulverized over a long period of time), even if the discharge opening 10 of the eye plate 11 is closed, the clearance between the lower part of the eye plate 11 and the inner cylinder 4 is maintained. 21
Because of the increased emissions from the plant, crushing cannot be performed as planned.

When the level of the raw material decreases due to the level of the ball 8, (normally, the filling amount of the ball 8 is 6
(5% or more) Driving may be hindered by the hitting of the ball 8, acceleration of ball wear, generation of heat, and the like.

[0008]

According to the present invention, in order to solve the above-mentioned problems, a raw material is charged from a charging port at one end of an outer cylinder and charged between an inner cylinder rotating inside the outer cylinder. In a horizontal ultra-fine grinding mill that pulverizes with a ball, transfers it to the opening of the eye plate provided on the support plate on the other side surface of the outer cylinder, and discharges it to the outside, the eye plate is attached and detached only to the upper half of the support plate A horizontal ultra-fine pulverizing mill is provided, wherein a sealing means for sealing a gap between a shaft of the inner cylinder and the support plate is provided.

According to the present invention, as described above, the perforated plate is provided only in the upper half of the support plate, and the perforated plate of the lower half which has conventionally existed is eliminated, and the clearance between the shaft of the inner cylinder and the support plate is grounded. Sealing is performed by a sealing means such as a packing material or a seal material, a seal holder, etc., thereby facilitating replacement of the perforated plate, reducing a short path during continuous operation in a dry or wet mill, and improving grindability. Things. Furthermore,
Since the face plate is removable and easily replaceable, the upper half of the face plate can be replaced with a blind plate, whereby batch grinding can be easily performed, and continuous grinding and batch grinding can be performed in the same mill.

When batch grinding is carried out using a conventionally provided horizontal ultrafine grinding mill for continuous grinding, 60% of the raw material charged into the mill through the clearance between the discharge opening of the plate and the lower part of the plate and the shaft of the inner cylinder. About% is discharged outside the mill. In addition, the ratio between the discharge and the clearance discharge is about 2: 8,
Most of them are emissions from clearance.

Therefore, as in the present invention, since the perforated plate is only the upper half, and the perforated plate is replaced with a blind plate, and the clearance is sealed by the sealing means, the raw material charged into the mill is removed. Batch crushing operation becomes possible without discharging most of the water (including water in the case of a wet type) to the outside of the mill. Further, in the case where the pulverized material is discharged after the end of the batch operation, for example, a pulverized material can be easily discharged by providing a discharge screen below the outer cylinder of the mill.

[0012]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a side view showing the inside of a horizontal ultra-fine pulverizing mill according to an embodiment of the present invention.
Is a sectional view taken along the line A-A. In these drawings, reference numerals 1 to 8, 10, 11, and 14 to 19 are members having the same functions as those of the conventional example, and therefore, detailed description is omitted and will be referred to as it is. 9, 12,
13 and 20. These features will be described in detail below.

In both figures, reference numeral 9 denotes a board supporting plate, which has an opening in the upper half, and a board 11 in the upper half.
Is installed. 12 is a mill inner cylinder 4 and a plate supporting plate 9
A seal member 13 seals a gap between the seal member 12 and the seal member 13. The seal member 13 presses and supports the seal member 12. 20
Is a screen provided in the manhole 19 for discharging the pulverized material, which has openings and has a size of 5 mm to 7 mm.

In the horizontal type ultra-fine pulverizing mill having the above structure,
In the case of performing continuous pulverization, the raw material 1 is introduced into the inside of the mill through the inlet 3 (in the case of a wet type, water 2 is also introduced), and the introduced raw material 1 is fed by the inner cylinder blades 5 of the rotating inner cylinder 4. It enters the gap between the flowing balls 8 and is ground and transported to the mill exit side. The pulverized raw material 1 is discharged through a discharge opening 14 from a discharge opening 10 of an upper half plate 11 attached to the plate supporting plate 9 by a compressed flow generated by the movement of the ball 8.

After the operation is completed, pulverized powder or slurry remains in the mill to a level of half the diameter of the mill. As a method for discharging the remaining powder, the powder can be discharged from the manhole 19 through the lower discharge screen 20.

In the above-mentioned horizontal type ultra-fine grinding mill, when performing batch grinding, the eye plate 11 attached to the upper half 9 of the eye plate support plate 9 is removed and replaced with a blind plate. next,
After charging a certain amount of the raw material 1 from the input port 3 (water 2 is also input in the case of a wet type), a blind flange is attached to the input port 3, the inner cylinder 4 is started and rotated, and pulverization is performed for a predetermined time.

When the batch pulverization is completed, the pulverized material or slurry is discharged from the lower discharge screen 20 in the same manner as the discharge method after the continuous pulverization.

In the case of the above-mentioned batch pulverization, since the space between the mill inner cylinder 4 and the outer cylinder 6 is sealed by the seal material 12 and the seal material presser 13, the charged raw material 1 remains in the mill, Grinding is continued. In the conventional example, the raw material 1 crushed from the clearance 21 between the lower part of the face plate 11 and the inner cylinder 4 is used.
Was discharged to the outside, and the amount of discharge from the clearance 21 was large, so that pulverization could not be performed as planned. However, in the present embodiment, this point is greatly improved.

In the above-described embodiment, the eye panel 11 attached to the half-open type eye panel support plate 9 is half the conventional one,
For this reason, at the time of low-viscosity pulverization, a short path from the discharge opening 10 of the eye panel 11 is reduced, so that pulverizability is improved as compared with the related art.

[0020]

As described above in detail, the present invention relates to a horizontal type ultra-fine pulverizing mill, in which a perforated plate is detachably provided only on an upper half of a supporting plate, and a connecting member between an inner cylinder shaft and a supporting plate is provided. Since the gap is sealed by the sealing means, the following effects can be obtained.

(1) Since continuous pulverization and batch pulverization can be performed with the same model number, pulverization characteristics can be easily determined.

(2) As described above, one mill can be used instead of two conventionally required mills, so that the installation space can be reduced.

(3) By eliminating the lower half of the discharge opening, it is possible to reduce the short path during continuous grinding, improve the grindability, and significantly reduce the generation of heat and ball abrasion due to the blank hit of the ball.

[Brief description of the drawings]

FIG. 1 is a side view showing the inside of a horizontal ultra-fine grinding mill according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a side view showing the inside of a conventional horizontal ultrafine grinding mill.

FIG. 4 is a sectional view taken along line BB in FIG. 3;

FIG. 5 is a detailed plan view of the eye panel shown in FIG. 4;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 raw material 2 water 3 input port 4 inner cylinder 5 inner cylinder blade 6 outer cylinder 7 outer cylinder blade 8 ball 9 panel support plate 10 discharge opening 11 panel 12 sealing material 13 sealing material retainer 14 discharge port 19 manhole 20 lower discharge screen

Claims (1)

[Claims] 1. A raw material is introduced from an introduction port at one end of an outer cylinder,
A horizontal ultra-fine grinding mill that pulverizes with the ball filled between the inner cylinder and the inner cylinder rotating inside the outer cylinder, transfers it to the opening of the eye plate provided on the support plate on the other side of the outer cylinder, and discharges it to the outside Wherein said eye plate is detachably provided only on an upper half of said support plate, and sealing means for sealing a gap between a shaft of said inner cylinder and said support plate is provided. .