JP2005087798A - Fixed blade for crusher - Google Patents

Abstract

The present invention provides a fixed blade for a crusher that can reduce operating costs and shorten maintenance time.
Engaging teeth 11 of a stationary blade 10 for a crusher and a rotary blade 4 provided on a rotor 3 of the crusher 1 are formed on both sides, and the object to be crushed in cooperation with the rotary blade 4 is provided. The cutting blades 12 for crushing W were formed on the front surface 10a side and the back surface 10b side of the meshing teeth 11, and turned over and rotated 180 degrees with respect to the mounting seat 1a provided in the crushing chamber 2 of the crusher 1. The state can be fixed.
[Selection] Figure 1

Description

  The present invention relates to a fixed blade for a crusher, particularly suitable for a uniaxial crusher.

  Conventionally, in the resource recycling process, industrial waste such as incombustible waste and incombustible bulky waste has been finely crushed in order to facilitate separation of materials by type.

  At this time, various crushers are used. For example, the uniaxial crushers 1 as shown in FIG. 4 are arranged at regular intervals in the circumferential direction on the outer peripheral surface of the rotor 3 installed in the crushing chamber 2. An object to be crushed W that has been introduced from the rotary blade 4 that has been made, the fixed blade 5 that meshes with the rotary blade 4 attached to the mounting seat 1a on the crusher body side, and the inlet 6 that is connected to the crushing chamber 2 A pusher 7 that presses against the rotor 3 is provided. The object to be crushed W is pushed by the pusher 7 toward the rotor 3, is crushed by the rotating blade 4 and the fixed blade 5 of the rotating rotor 3, and is discharged as crushed pieces T.

  In such a uniaxial crusher 1, since the to-be-crushed object W is crushed by the rotary blade 4 and the fixed blade 5, the fixed blade 5 is more worn than the rotary blades 4 arranged in the circumferential direction at regular intervals. Therefore, since it is necessary to frequently replace the fixed blade 5, the structure of the fixed blade 5 greatly affects the operating cost of the uniaxial crusher 1.

Thus, conventionally, a crusher fixed blade as shown in Patent Document 1 has been proposed.
Japanese Patent Laid-Open No. 10-296107

  The crusher fixed blade 50 shown in FIG. 5 (hereinafter referred to as “fixed blade 50”) meshes with the fixed blade body 51 in a row adjacent to each other in the direction of the rotation axis 3a of the rotor 3 with a gap. The cutting edge tips 53 are arranged. Each of the cutting edge tips 53 has a square shape in plan view and is chamfered at each corner, and is fitted into a notch seat portion 54 formed on the rotor 3 side of the fixed blade main body 51 and fastened with a bolt 52. ing.

  The above-mentioned fixed blade 50 can be used by replacing the cutting edge tip 53 by 180 degrees by turning off the bolt 52 even if wear or chipping due to use occurs, thus reducing the operating cost. is there.

  However, since the fixed blade 50 has a structure in which the cutting edge tips 53 are adjacent to each other and arranged in a line, the notch seat portion 54 and the cutting edge chip 53 are required to have high dimensional accuracy. For this reason, the fixed blade 50 has a manufacturing cost, and the operating cost cannot be sufficiently reduced. Further, the fixed blade 50 has a problem in that it takes time for maintenance because the bolts 52 must be attached to and detached from each of the cutting blade tips 53 when the cutting blade tips 53 are replaced. there were.

  Then, the subject of this invention is obtaining the fixed blade for crushers which makes it possible to reduce an operating cost and shorten maintenance time.

  In order to solve the above-mentioned problems, the present invention provides a fixed blade for a crusher, in which meshing teeth with a rotary blade provided on a rotor of the crusher are formed on both sides, and in cooperation with the rotary blade, Cutting blades for crushing the crushed material were formed on the front side and the back side of the meshing teeth, and fixed to a mounting seat provided in the crushing chamber of the crushing machine and turned over and rotated 180 degrees.

  The fixed blade for a crusher having the above configuration has meshing teeth on both sides, and the cutting blades are formed on both sides of the meshing teeth, so it can be rotated 180 degrees or turned over and fixed to the mounting seat. Thus, a total of four cutting edges can be used.

  Moreover, in the fixed blade for a crusher according to the present invention, since the cutting blade is formed on both surfaces of the meshing teeth on both sides, it is not necessary to set a high dimensional accuracy for the cutting blade.

  As described above, when the fixed blade for a crusher according to the present invention is used, since it is not necessary to set a high dimensional accuracy for the cutting blade, the manufacturing cost can be reduced and a total of four cutting blades can be used. The operating cost of the crusher can be greatly reduced.

  Furthermore, when the fixed blade for a crusher according to the present invention is used, the cutting blade can be replaced only by detaching only the fixed blade for the crusher, so that the maintenance time can be shortened.

  The best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing a use state of a fixed blade for a crusher according to the best embodiment of the present invention. FIG. 2 is an enlarged view of an attachment portion of the crusher fixed blade of FIG. FIG. 3 is a partially enlarged view of the cross section of FIG. 1 to 3 is fixed to a mounting seat 1a provided in the crushing chamber 2 of the uniaxial crusher 1 as shown in FIG. It can be used as the fixed blade 5.

  As shown in FIGS. 1 and 3, the fixed blade 10 is a rectangular plate whose basic shape has a longitudinal side in the direction of the rotor shaft 3 a. On the fixed blade 10, meshing teeth 11 with the rotary blade 4 are formed on both side surfaces on the long side facing the rotor 3.

  The meshing teeth 11 are wedge-shaped when viewed from above and protrude toward the rotor 3 and are arranged in the direction of the rotating shaft 3 a of the rotor 3.

  The cutting blade 12 is formed on the ridge line on the front surface 10 a side and the back surface 10 b side of the meshing tooth 11 and the fixed blade 10. When the forms of the meshing teeth 11 and the cutting blade 12 are formed as described above, the fixed blade 10 has a total of four cutting blades 12. In addition, the form of the meshing tooth 11 and the cutting edge 12 is not limited to this, It is good to set so that a to-be-crushed object may be crushed in cooperation with the rotary blade 4 according to the form of the rotary blade 4.

  The fixed blade 10 is formed with a point-symmetrically arranged through hole 13 with a bolt seat so that it can be used for each cutting edge 12 at each location, and a bolt 14 having a smaller diameter than the through hole 13 is inserted into the through hole 13. The bolt hole 15 formed in the mounting seat 1a so as to correspond to the through hole 13 and the bolt 14 are screwed together to be fixed to the mounting seat 1a. Thereby, the fixed blade 10 can be fixed in a state where it is turned over and rotated 180 degrees with respect to the mounting seat 1a. Here, the bolt 14 having a smaller diameter than the through hole 13 is inserted into the through hole 13 in order to make an adjustment allowance described later.

  By the way, when the fixed blade 10 is fixed to the mounting seat 1a, since the meshing teeth 11 are formed on both side surfaces of the fixed blade 10, there is a gap between the teeth of the meshing teeth 11 opposite to the rotor 3 side. End up. For this reason, it is necessary to fill the interdental space of the meshing teeth 11 so that the object to be crushed W pushed by the pusher 7 is not caught. Therefore, as shown in FIGS. 1 to 3, it is desirable to use a spacer block 20 installed between the stepped wall 1 b between the sliding surface S of the pusher 7 and the mounting seat 1 a and the fixed blade 10.

  The spacer block 20 includes a standing wall portion 21 that is in close contact with the stepped wall 1b and a spacer portion 22 that fits into the interdental gap of the meshing teeth 11 protruding from the standing wall portion 21 toward the fixed blade 10 side. It is. The spacer portion 22 is provided so as to be fitted to the interdental gaps at both ends and the center portion of the fixed blade 10.

  A stopper 30 may be inserted between the spacer portions 22. The stopper 30 positions the fixed blade 10 by pushing the fixed blade 10 toward the rotor 3. The stopper 30 includes, for example, a receiving member 31 that is fitted between the gaps of the meshing teeth 11 and a driving member 32 that is driven between the standing wall portion 21 and the receiving member 31. The receiving member 31 and the driving member Each of 32 may have a sliding surface tapered in the driving direction.

  A method of fixing the fixed blade 10 to the mounting seat 1a using the spacer block 20 is as follows. First, the spacer block 20 is attached to the mounting seat 1a. Depending on the position of the cutting blade 12 to be used, the fixed blade 10 is turned 180 degrees or turned over so that one of the meshing teeth 11 faces the rotor 3 side, and the other meshing tooth 11 is placed on the spacer portion 22. Place on the mounting seat 1a so as to mesh with each other, and temporarily tighten the bolts 14. While the stopper 30 is installed and the driving amount of the driving member 32 is adjusted, the fixed blade 10 is pushed out to the rotor 3 side to adjust the gap between the cutting blade 12 and the rotary blade 4. When the adjustment is completed, the receiving member 31 and the driving member 32, the spacer block 20 and the driving member 32 are spot-welded at the welded portion m, and then the bolt 14 is completely tightened. Finally, after the bolt 14 is tightened, resin caulking is performed in the gap between the through hole 13 and the bolt 14 and the gap between the fixed blade 10 and the spacer block 20.

  When the spacer block 20 is used as described above, the spacer block 20 fills the gap between the meshing teeth 11 on the side opposite to the rotor 3 side, so that the amount of resin coking can be reduced and the object to be crushed W is caught. As a result, the cutting blade 12 is less likely to be damaged, and the operating cost and maintenance time can be further reduced.

The top view which showed the use condition of the fixed blade for crushers of this best embodiment of this invention Partial enlarged view of FIG. Enlarged cross-sectional view of the fixed blade for crusher in FIG. Overall configuration diagram showing an example of a crusher (A) is the top view which showed an example of the conventional fixed blade for crushers, (b) is the arrow line view of the AA cross section of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Uniaxial crusher 1a Mounting seat 3 Rotor 4 Rotary blade 5, 10 Crusher fixed blade 11 Engagement tooth 12 Cutting blade 20 Spacer block 21 Standing wall portion 22 Spacer portion 30 Stopper

Claims (1)

  Engaging teeth with a rotary blade provided on a rotor of a crusher are formed on both sides, and cutting blades for crushing an object to be crushed in cooperation with the rotary blade are provided on the front side and the back side of the meshing tooth. A fixed blade for a crusher that can be fixed in a state of being turned upside down and rotated 180 degrees with respect to a mounting seat formed in the crushing chamber of the crusher.

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