JPH059647U - Stirring mill - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the maintenance cost of the stirring mill. [Structure] The crushing stirring blade 3 includes a root portion 3a and a tip portion 3b.
The root part 3a, which is slow to wear during crushing, is welded to the liner 4a of the outer cylinder body 1 and the liner 4b of the inner cylinder body 2 in 7 minutes.
On the other hand, the tip portion 3b, which is heavily worn, is detachably attached to the root portion 3a by the bolt 6, and when worn, the bolt 6 is loosened so that the orientation of the tip portion 3b is 1
The tip 3b is replaced with a new one by changing it by 80 ° and reusing it, or detaching the bolt 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stirring mill.

[0002]

[Prior Art]

 A conventional stirring type mill will be described with reference to FIGS. 4 and 5. 1 is an outer cylinder body, 2 is an inner cylinder body, 3 is a stirring blade for crushing, 4a is a liner for covering the inner peripheral surface of the outer cylinder body 1, and 4b is A liner for covering the outer peripheral surface of the inner cylinder body 2 is provided with the crushing stirring blades 3 attached to the liner 4a of the outer cylinder body 1 and the liner 4b of the inner cylinder body 2 by welding 7.

[0003]

[Problems to be solved by the device]

 The conventional stirring mill shown in FIGS. 4 and 5 has the following problems. That is, if the agitating mill is operated for a long time or if a hard raw material is crushed, the agitating blade 3 for crushing will be worn and must be replaced. 4a and the liner 4b of the inner cylinder body 2 are attached by welding 7, and it is not possible to replace only the crushing stirring blade 3 and it is necessary to replace the liners 4a and 4b, which increases maintenance costs. there were.

The present invention is proposed in view of the above problems, and an object of the present invention is to provide an agitating mill capable of reducing maintenance cost.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides an agitating mill for agitating a pulverizing ball with a plurality of agitating blades attached to an outer cylinder body and an inner cylinder body, respectively, and performing ultrafine pulverization. The root portion of the crushing stirring blade is fixed to the inner surface of the outer cylindrical body and the outer surface of the inner cylindrical body by welding, and the tip end of the crushing stirring blade is detachably attached to the root portion with a bolt. There is.

[0006]

[Action]

 The agitating mill of the present invention is constructed as described above, and the agitating blade for crushing is divided into a root part and a tip part so that the root part that wears slowly during crushing is the liner and the inner cylinder of the outer cylinder body. While it is fixed to the liner of the body by welding, the tip part that wears heavily is detachably attached to the root part with a bolt. When worn, loosen the bolt and turn the tip of the stirring blade for grinding to 180 ° Replace and reuse, or remove and install the bolt and replace the tip with a new one.

[0007]

【Example】

 Next, the stirring type mill of the present invention will be described with reference to FIGS. 1, 2 and 3. 1 is an outer cylinder body, 2 is an inner cylinder body, 3 is a crushing stirring blade, 3a is a root part of the crushing stirring blade 3, 3b is the tip of the crushing stirring blade 3, 4a is a liner that covers the inner peripheral surface of the outer cylinder body 1, 4b is a liner that covers the outer peripheral surface of the inner cylinder body 2, and 6 is the above-mentioned tip part 3b. A bolt 7 that is detachably attached to the root portion 3a is a welding portion that fixes the root portion 3a to the liner 4a (and the liner 4b described above).

Next, the operation of the stirring mill shown in FIGS. 1, 2, and 3 will be specifically described. The crushing stirring blade 3 is divided into a root portion 3a and a tip portion 3b, and the root portion 3a, which is worn slowly during crushing, is welded to the liner 4a of the outer cylinder body 1 and the liner 4b of the inner cylinder body 2. On the other hand, the tip part 3b, which is heavily worn, is detachably attached to the root part 3a with a bolt 6. When worn, loosen the bolt 6 and change the direction of the tip part 3b by 180 °. Reuse or remove the bolt 6 and replace the tip 3b with a new one.

[0009]

[Effect of the device]

 The agitating mill of the present invention divides the agitating blade for crushing into two parts, the root part and the tip part, as described above, and the root part that wears slowly during grinding is melted into the liner of the outer cylinder body and the liner of the inner cylinder body. While it is fixed by contact, the tip part with severe wear is detachably attached to the root part with a bolt. When worn, loosen the bolt and change the direction of the tip part of the stirring blade for grinding by 180 ° and re-install. Since it is either used or the bolt is removed and the tip is replaced with a new one, there is no need to replace the liner, and maintenance costs can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing an embodiment of a stirring mill according to the present invention.

FIG. 2 is a vertical sectional front view thereof.

FIG. 3 is an enlarged vertical side view of a portion indicated by an arrow B in FIG.

FIG. 4 is a vertical cross-sectional side view showing a conventional stirring mill.

5 is a vertical sectional front view taken along the line AA of FIG.

[Explanation of symbols]

 1 Outer Cylinder Body 2 Inner Cylinder Body 3a Grinding Stirring Blade Root 3b Grinding Stirring Blade Tip 4a Outer Cylinder Body 1 Liner 4b Inner Cylinder Body 2 Liner 6 Bolt 7 Weld

Claims (1)

[Claims for utility model registration] [Claim 1] An agitating mill for agitating a pulverizing ball with a plurality of agitating blades attached to each of an outer cylinder body and an inner cylinder body to perform ultrafine pulverization, The root portion of the crushing stirring blade was fixed to the inner surface of the outer cylindrical body and the outer surface of the inner cylindrical body by welding, and the tip end of the crushing stirring blade was detachably attached to the root portion with a bolt. A stirring mill characterized by: