JP2528938Y2 - Rod mill - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention relates to a crusher used for sand making machines, that is, a method in which a raw material is put into a rotating cylinder having a rod therein, and the rod is rotated at an appropriate speed while the impact of the rod is reduced.
The present invention relates to an improved technology of a rod mill that grinds raw materials by friction or the like.

[0002]

2. Description of the Related Art Conventionally, a rod mill used in a sand maker or the like puts a raw material into a rotating cylinder inside a steel rod and rotates the cylinder at an appropriate speed to reduce the impact of the rod. The raw material is pulverized by friction or the like. The grinding operation is performed by installing a large number of rods
Because it is necessary to process as much raw material as possible
In the case of sand making, a relatively large raw material of about 40 mm
Since large-scale crushing of up to
), A structure that can withstand severe use is desirable.
On the other hand, in consideration of economy, a simple and robust structure is important.
For this reason, a rod mill is generally used as shown in FIG.
Basically a structure in which the side walls 3 and 4 are provided at both ends of the rotating cylinder 1
It has become.

By the way, when attention is paid to the raw material supply and pulverized material discharge mechanism in such a rod mill, a structure in which the flow from the raw material to the pulverized material is the same as the axial direction of the cylindrical body, that is, FIG.
2 , a structure in which a raw material supply port 5 is formed on a side wall 3 at one end of a rotary cylinder 1 and a pulverized material discharge port 6 is formed on a side wall 4 at the other end is generally used.

However, in the crusher having such a structure, the rod 2 serving as the crushing medium jumps out of the discharge port 6 together with the crushed material during the rotation of the rotary cylinder 1, and the surrounding equipment
・ Not only damage to equipment, but also to worker safety
As a result, there is a problem that the efficiency of the crushing operation is deteriorated.

By the way, according to the technique of the sand making machine proposed in Japanese Patent Publication No. 54-40768 and put to practical use, the above problem can be solved at once. That is, as shown in FIG. 3 , the sand making machine rotates the rotary cylinder 1 rotating on the driving rubber tire 13 into the machine frame 14 on the discharge port 6 side.
The discharge port 6 is inserted by inserting
The rod 2 is slightly inclined so that the side becomes higher. According to such a configuration, the rotating cylinder 1 is inclined so that the rod 2 does not protrude from the discharge port 6 even when it is rotated.

[0006]

[Problem to be solved by the invention] However,
Since the above-mentioned sand making machine has a configuration in which the rotary cylinder 1 is inclined, the weight of the rotary cylinder 1 and the load due to its rotation are reduced by the driving rubber tire 13, the machine frame 14, and the base 1 that support it.
Without uniformly applied to the support member 6 or the like, Therefore occur often failure to force occurs in each support member, and the like (e.g., feed
Rubber tire 13 at the mouth, early wear of shell liner, both wheels
Of the same driving wheel that requires different torques
Gear breakage, etc.)
Maintenance such as deterioration of grinding efficiency and shortened service life
Many problems have arisen in terms of management, running costs and availability .

[0007] Therefore, there has been a long-awaited demand for a pulverizer in which the rod does not protrude from the discharge port even if the rotary cylinder is not inclined, even in a horizontal state.

[0008] The present invention is that is made in view of the point described above in the prior art, the rod is not a of protruding any from the outlet also by rotating the rotary cylindrical body, the order Peripherals vessels
There is no risk of damage, and workers can work safely.
An object of the present invention is to provide a rod mill that can obtain various functions and effects.

[0009]

For this reason, according to the present invention, a rotating cylinder body in which a large number of grinding media are provided is provided with side walls at both ends, and a raw material supply port is provided at one side wall and a pulverizing material is provided at the other side wall. in a rod mill where goods outlet are respectively formed, before
A shell liner with a convex cross section is attached to the inner wall of the rotary cylinder.
The side wall on the side of the pulverized material discharge port in the rotating cylinder ,
A liner plate that closes the pulverized material discharge port is formed through a support member while forming a predetermined gap between the gap and the recessed portion of the shell liner. It is assumed that.

[0010] Here, disposing the liner plate so as to close the pulverized product discharge outlet will have that pulverized material is disposed liner plate from flowing directly to outlet to Saegigiru so.

[0011]

According to the present invention, a liner plate is formed on the side wall of the rotary cylinder on the discharge port side so as to close the discharge port while forming a predetermined gap . Therefore, even if the rod is likely to fly out by rotating the rotary cylinder, the rod is blocked by the liner plate, and it is possible to completely prevent the rod from flying out of the discharge port. At the time of this interruption, the rod collides with the liner plate, but since the liner plate is firmly fixed to the side wall via the support member, there is no danger of damage, but rather the side wall can be damaged as a side wall liner. It will be.

Further, since the gap between the side wall and the shell liner recessed portion and the liner plate is secured as a passageway respectively pulverized product from the grinding material discharge port through the gap
Will come out .

Further, during operation of the rod mill,
Due to impact of pad and crushed material etc.
Noise is generated, but due to the arrangement of the liner plate,
This will block sound from leaking directly out of the outlet.
You. As a result, the noise generated from inside the rotating cylinder is extremely
Will be reduced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments.

FIG. 1 shows an embodiment of a rod mill according to the present invention, and particularly shows an example of a so-called wet rod mill in which a rod is used as a grinding medium for rough stone. FIG. 3A is a side cross-sectional view showing the discharge port side of the rotary cylinder;
(B) is AA sectional drawing in (a).

In this embodiment, a rotating cylinder 1 having a large number of rods 2a therein is provided with side walls at both ends, and a rough stone inlet (not shown) is provided at the center of one end side wall (not shown) and a side wall 4 at the other end. A discharge port 6 is provided at each central portion, and a shell liner 9 having a convex cross section is attached to the entire inner wall of the cylinder. The discharge port 6 in the rotary cylinder 1
On the side, a liner plate 7 is disposed at a predetermined distance from the side wall 4 and the recessed portion of the shell liner 9 .

The liner plate 7 is formed in a disk shape having a diameter smaller than the diameter of the cylindrical body 1 and larger than the diameter of the discharge port 6, and a hole for a person to enter and exit is formed in the center thereof. It is. The lid 10 is detachably attached to the hole. Further, the liner plate 7 is firmly fixed to the side wall 4 with bolts via a plurality of support members 11 having a predetermined thickness and a predetermined diameter interposed between the liner plate 7 and the side wall 4. As described above, in this embodiment, the liner plate 7
A gap is formed between the inner wall and the side wall 4 by the thickness of the support member 11 and a gap is formed between the inner wall of the cylindrical member and the inner wall of the cylindrical member. ing.

Next, an operation example of the embodiment having the above configuration will be described.

This embodiment is a wet type rod mill as described above. In operation, a rough stone and water are charged through a rough stone inlet (not shown), and the rotary cylinder 1 is rotated to rotate the rod 2.
Pulverization is performed by the impact and friction of a. During the rotation of the rotary cylinder 1, the ore is crushed while being mixed with water, and the crushed material 17 and the water flow to the discharge port 6 side.
Due to these flows and rotation of the rotary cylinder 1, the rod 2a
Also slightly moves to the discharge port 1 side, but since the liner plate 7 is disposed so as to close the discharge port 6, the moving rod 2
"a" collides with the liner plate 7 and rebounds, and does not jump out of the discharge port 6 at all. In this collision, since the liner plate 7 is firmly fixed to the side wall 4 via the support member 11, there is no possibility that the liner plate 7 will be damaged by the impact of the collision. Of course, the side wall 4 can be protected as a liner.

[0020] On the other hand, the pulverized material 17 and water, Sherurai
After passing through the gap between the recessed portion of the screw 9 and the liner plate 7 and the gap between the side wall 4 and the liner plate 7, it reaches the discharge port 6 and is discharged. In addition, replacement of the rod and the rotating cylinder 1
When inspecting the interior, remove the lid 10 at the center of the liner plate 7,
You can get in and out of there.

As is apparent from the above-mentioned operation examples, the following remarkable functions and effects are recognized in these embodiments.

First, a liner plate 7 is disposed so as to close the discharge port 6 , and the liner plate 7 can completely prevent the rod 2a from jumping out of the discharge port 6 . Therefore, the peripheral device due to the projection of the rod 2a
Workers can work with peace of mind without damage to equipment
become. Further, during operation, the rotating cylinder 1 is rotated by rotation .
A considerable amount of noise is generated due to the impact of the pad 2a and the pulverized material, but the arrangement of the liner plate 7 with the lid 10 prevents the noise from leaking out of the discharge port 6.
As a result, the noise generated from the rotating cylinder 1 is
It will be significantly reduced outside.

The outlet side wall 4, in particular the outlet 6 near the periphery, because the liner plates 7 collision rod 2a is prevented, the protection is achieved becomes Rukoto, the life of the machine body
It is essentially growing.

[0024]

As described above, according to the pulverizer according to the present invention, even when the rotary cylinder is rotated, the rod does not protrude from the discharge port at all, and the peripheral machine due to the protruding rod is used.
Workers can work with peace of mind without damage to vessels and equipment
Therefore, an efficient pulverizing operation can be performed. In particular, since there is no need to incline the rotating cylinder, the rod is crushed in the most efficient horizontal state.
The grinding efficiency has also been improved, and excessive
Never even. Also, depending on the arrangement of the liner plate, the rod
Prevents collision on the outlet side wall, especially around the outlet.
The life of the entire device is extended, combined with the above effects.
It has something to have. In addition, the rod mill is operating
Is a rotating cylinder due to the impact of rods and crushed materials by rotation
There is considerable noise inside the body, but the placement of the liner plate
This prevents noise from leaking directly from the outlet to the outside.
Noise generated from inside the rotating shaft
The division will be significantly reduced.

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment of the first invention, wherein FIG. 1A is a side sectional view showing a discharge port side of a rotary cylinder, and FIG. 1B is a sectional view taken along line AA of FIG.

FIG. 2 is an explanatory view showing a typical example of a pulverizer in which a flow from a raw material to a pulverized material is the same as the axial direction of a cylindrical body.

FIG. 3 is a side view of the sand making machine disclosed in Japanese Patent Publication No. 54-40768.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotating cylinder 2, 2a Rod 3, 4 Side wall 5 Raw material supply port 6 Crushed material discharge port 7 Liner plate 9 Shell liner 10 Cover 11 Support member

Claims (1)

(57) [Scope of request for utility model registration] 1. A rotary cylinder body in which a large number of grinding media are provided. Side walls are provided at both ends, and a raw material supply port is provided at a side wall at one end.
In a rod mill in which a pulverized material discharge port is formed on a side wall at the other end, a shell having a cross section convex on an inner wall of the rotary cylinder body.
While affixing the liner, the side wall on the side of the pulverized material discharge port in the rotary cylinder , between the side wall and the dent of the shell liner
A rod mill, wherein a liner plate that blocks the pulverized material discharge port is fixed via a support member while forming a predetermined gap between the line mill and the rod mill.