JPH0131321Y2 - - Google Patents

Description

[Detailed description of the invention] This invention uses the cooperative action of a rotating blade and a fixed blade to crush solid industrial waste such as piano wires, electric wires, plastic runners, molded products, spools, garbage, etc. This invention relates to a rotary blade mounting structure for a shear crusher.

(Prior technology) The rotary blade of this type of crusher is
As disclosed in the publication, the rotary blades are directly attached to a plurality of rotary blade attachment surfaces formed on the outer periphery of the rotor, and the rotary blade attachment surfaces are parallel to the fixed blade and the rotor axis, The outer peripheral surface of the rotor and the blade mounting surface form an acute corner.

(Problems to be solved by the invention) In the above-mentioned conventional technology, a flat plate-shaped rotary blade is used, and this rotary blade has a shearing action simultaneously with the fixed blade over the entire width of the blade, resulting in a large load. , and is unstable, generates large vibrations, and damages the cutter quickly.
Further, the vicinity of the rotary blade attachment portion is always in contact with the material to be crushed, and the corner portion forming the blade attachment surface may be worn or damaged by the material to be crushed. Furthermore, the amount of protrusion of the cutting edge of the rotary blade from the outer periphery of the rotor remains unchanged and cannot be changed without replacing the rotor, and the position of the rotary blade can be changed depending on the type or shape of the material to be crushed. This is extremely difficult.

(Means for Solving the Problems) The present invention provides a rotor with a blade mounting body that is detachably attached to the rotor, and a rotary blade mounting surface and a rotor outer periphery protection portion that can be formed into a pocket on the blade mounting body. It is possible to solve all the problems of the prior art described above.

That is, the specific structure of the problem-solving means in the present invention is characterized by the rotation of a shearing type crusher in which a rotary blade 22 that performs a shearing action in cooperation with a fixed blade 12 is attached to the outer periphery of the rotor 5. In the blade attachment structure, a blade attachment body 21 is detachably attached to the outer circumference of the rotor 5, and a rotary blade 22 is detachably attached to the blade attachment body 21 while giving a cutting edge angle α to the fixed blade 12. The rotary blade mounting surface 23 and the rotor outer periphery protection part 26 which is located on the leading side of the rotary blade 22 in the rotational direction and covers the outer periphery of the rotor 5 on the radially inner side of the cutting edge of the rotary blade 22 are formed.

(Function) The rotary blade 22 attached to the blade mounting surface 23 of the blade mounting body 21 is inclined in the blade width direction with respect to the fixed blade 12, and is given a cutting edge angle α. When working to produce a shearing action, the rotary blade 22
The shearing action is sequentially transferred from one end to the other end.
Further, the rotor outer periphery protection portion 26 of the blade attachment body 21 protects the rotor outer periphery near the attachment portion of the rotary blade 22 from the material to be crushed. The rotor outer periphery protection portion 26 is located on the rotation leading side of the rotary blade 22 and radially inward from the cutting edge of the rotary blade 22, and forms a pocket A of the rotary blade 22.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In FIGS. 1 and 2, a shearing type crusher 1 has a shearing chamber 3 formed in a casing 2, and the upper part of this shearing chamber 3 is connected to a supply port 4 through which material to be crushed is fed from, for example, a screw feeding section (not shown). It's summery.

A rotor 5 is arranged in the center of the shearing chamber 3, and the rotor 5 is attached to or integrally formed with a horizontal rotor shaft 6. The rotor shaft 6 is rotatably supported by a pair of left and right lids 7 of the casing 2 via bearings 8, and power is transmitted from an external prime mover via a pulley 9 provided at one end.

The casing 2 has fixed blade mounting bases 1 at three locations.
1 is provided, and each blade mount 11 has a fixed blade 1.
2 is attached to protrude into the shear chamber 3. Each fixed blade 12 is fastened by passing a bolt 14 through an elongated hole 13 and screwing this bolt 14 into the blade mount 11, and by an adjustment bolt 15 screwed from the outside of the blade mount 11. , the amount of protrusion can be adjusted freely.

The first and second fixed blades 12a, 12b are arranged symmetrically with respect to the center line of the rotor shaft 6, and the third fixed blade 12c is arranged closer to the supply port 4 than the first fixed blade 12a. The number of fixed blades 12 is not limited to three, but may be one or a plurality of blades arranged at appropriate intervals.

Reference numeral 16 denotes a particle size adjusting member disposed between the blade mount 11 of the first fixed blade 12a and the blade mount 11 of the second fixed blade 12b, and a particle size adjusting member 16 is arranged below the rotor 5 approximately along the rotation trajectory of the rotor 5. It has a semicircular cross-sectional shape, and has a large number of crushed material discharge holes 17. The lower part of this particle size adjustment member 16 serves as a fall port 18 for the crushed material.

In FIGS. 1 to 6, the rotor 5 has a substantially triangular cross section, and a rotary blade 22 is attached to a support surface 20 at each corner of the rotor 5 via a blade attachment body 21 (hereinafter also referred to as a protector). There is. The protector 21 has a substantially L-shaped cross section, and one side has a mounting part 24 forming a rotary blade mounting surface 23. The protector 21 is fixed to the rotor 5 via a bolt 25 inserted through a through hole 27, and the other side is fixed to the rotor 5. It serves as a rotor outer circumferential protection portion 26 that covers the outer circumferential surface. The protector 21 is made of a material with higher wear resistance than the rotor 5, and the blade mounting surface 23 is inclined at an angle α in the blade width direction (longitudinal direction) with respect to the rotor support surface 20.

The rotary blade 22 is formed by attaching a chip to the tip of a plate material having a substantially uniform thickness, and has a plurality of long holes 28 for passing bolts, and the long holes 28 and the protector 2
It is fastened to the rotor 5 by a bolt 30 that passes through the hole 29 of 1 and is screwed into the rotor 5, and the positional relationship with the fixed blade 12 is adjusted within the range of the long hole 28 by the adjustment bolt 31. is adjustable.

The rotary blade 22 and protector 21 are connected to the rotor 5
The blade mounting surfaces 23 of the left and right protectors 21 are arranged symmetrically with respect to the center in the axial direction.
is inclined, so the left and right rotating blade 22 is the fixed blade 1.
When viewed from 2, they are arranged in a valley shape, a mountain shape, or the like.

The inclination angle α of the rotary blade 22 forms a cutting edge angle with respect to the fixed blade 12, and one end rotates ahead of the other end. Therefore, double-edged blades 12, 22
The shear caused by the cooperation of the blades acts to move from one end of the blade to the other end.

In addition, when the leading ends of the left and right pair of rotary blades 22A, 22B are located at the center in the rotor axis direction (mounted arrangement), the material to be crushed flows outward in the rotor axis direction, and conversely, the rotation When the leading edge of the blade is located at the outer end of the rotor (valley arrangement shown in the example)
The material to be crushed is made to flow so as to gather at the center of the rotor.

The rotary blade 22 and the protector 21 are connected to the rotor 5
In addition to the three sets arranged in the circumferential direction of the rotor 5, one set, two sets, or four or more sets may be arranged, and two sets are arranged in the axial direction of the rotor 5.
In addition to dividing, it can be divided into three or more parts, or it can be formed with one piece over the entire length. In addition, in the case of a divided structure, the arrangement of the rotary blade 22 is also chevron-shaped,
It can be arranged not only in a valley shape but also in an N shape, a W shape, etc., and may be appropriately set depending on the material, size, etc. of the material to be crushed so that it can be crushed effectively.

Furthermore, since the rotary blade 22 shown in FIG. 4 has both end surfaces 33 formed at right angles to the fixed blade 12, in order to have a split structure, adjacent rotary blades must have a symmetrical shape. must be formed,
As shown in FIG. 7, both end surfaces 3 of the rotary blade 22'
If the blades 3' are formed at the same angle β with respect to the cutting edge, all the rotary blades 22' attached to the rotor 5 can be made the same, and multiple types of protectors 21 can be prepared. If you keep it, rotary blade 2
2' can be used in common to change the mounting state of the rotary blade in various ways.

Furthermore, in the case of a split structure, one protector 21 is formed to have a length spanning the entire length of the rotor 5, and only the blade mounting surface 23 can accommodate the arrangement of a plurality of rotary blades 22 to be mounted there. You can also leave it tilted.

As shown in FIGS. 1 and 2, the rotor outer periphery protection portion 26 is located on the leading side of the rotary blade 22 in the rotational direction, and covers the outer periphery of the rotor 5 on the radially inner side of the cutting edge of the rotary blade 22. A pocket A for shearing is formed between the outer periphery of the outer periphery protection portion 26 and the cutting edge of the rotary blade 22 .

(Effect of the invention) According to the invention detailed above, the blade mounting body 21
(Protector) is removable from the rotor 5 and the rotary blade 22, so it can be easily replaced with the required one.
, it is possible to set a desired cutting edge angle α on the rotary blade 22, and the blade mounting body 21
Since the rotor outer periphery protection part 26 is formed on the rotor outer periphery protection part 26, the size of the part that protects the outer periphery of the rotor 5 on the leading side of the rotary blade 22 in the rotational direction and that becomes the pocket A when the rotary blade 22 is sheared can be adjusted to a desired size. Therefore, the optimum pocket A for the rotary blade 22 can be set according to the properties and size of the material to be crushed and the desired shear size.
can be given.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a sectional front view, FIG. 2 is a sectional side view, FIG. 3 is an enlarged view of main parts, and FIG. 4 is a view taken along the arrow in FIG. 5 is a plan view of the rotary blade, FIG. 6 is a plan view of the protector, and FIG. 7 is a plan view showing a modification of the rotary blade. 1... Shear type crusher, 3... Shearing chamber, 5... Rotor, 12... Fixed blade, 21... Protector, 2
2...Rotary blade, 23...Rotary blade mounting surface, 26...
Rotor outer circumference protection part, α... angle (cutting edge angle).

Claims (1)

[Claims for Utility Model Registration] Rotary blade 2 that performs shearing action in cooperation with fixed blade 12
2 is a rotary blade attachment structure of a shear type crusher attached to the outer circumference of the rotor 5, a blade attachment body 21 is detachably attached to the outer circumference of the rotor 5, and a rotary blade 22 is attached to the blade attachment body 21. A rotary blade mounting surface 23 that is removably attached to the fixed blade 12 with a cutting edge angle α, and an outer peripheral portion of the rotor 5 that is located on the leading side of the rotary blade 22 in the rotational direction and radially inward from the cutting edge of the rotary blade 22. A rotary blade mounting structure for a shear type crusher, characterized in that a rotor outer periphery protection portion 26 is formed to cover the rotor.