JPH019634Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a rotary blade for crushing municipal garbage and other various industrial wastes using a slitter action.

(Prior Art) A slitter type crusher is constructed as shown in FIG.

That is, in FIG. 11, reference numeral 1 denotes a crusher casing, and within the crushing chamber 2 of the crusher casing, rotors 3 which are rotated inwardly are mounted on parallel shafts.

The rotor 3 has rotary blades 5 and distance collars 6 alternately fitted onto a rotating main shaft 4 so that they can rotate together using keys or splines, and the side surfaces of the rotary blades 5 are slidably engaged with each other as shown in FIG. It is combined into a shape.

That is, the material input by the input conveyor 7 or the like is scraped by the claws 8 protruding from the outer periphery and slittered by the sliding engagement part.
In FIG. 11, reference numeral 11 indicates a rotary scraper.

The rotary blade 5 of this rotor 3 is constructed as shown in FIG. 13, as disclosed in Japanese Utility Model Publication No. 59-4751.

In Fig. 13, 12 is a circular ring-shaped rotary blade shank, with a mounting hole 13 in the center.
A cylindrical boss portion 14 is formed passing through the boss portion 1.
A shank 15 is integrally formed on the axial center outer periphery of the shank 15, and in this example, three material retracting claws 8 having cutting edges 16 are integrally provided on the outer periphery of the shank 15.

In addition, 17 is the screw hole for attaching the side blade.
They are provided through the shank 15 at equal intervals in the circumferential direction.

Reference numeral 18 denotes a side blade, which in this example is divided into four pieces, which can be attached and detached by stacking these four pieces on both sides of the shank 15 and screwing bolts 19 into screw holes 17. When the side blade 18 is attached, the outer peripheral edge shape of the side blade 18 is circular like the outer peripheral edge shape of the shank 15.

A groove 20 with a semicircular cross section extending in the circumferential direction is formed halfway in the width direction of the outer circumferential surface of the side blade 18. Furthermore, the side blade 18 has a bolt head on one side of the blade coaxially with the bolt insertion hole 21. A housing recess 22 is provided. A shallow recess 23 is formed in the shape of a band on the outer surface of the blade through a step, and the outer peripheral side of the recess 23 is substantially a slitter 24, and the width of the slitter 24 is equal to that of the pair of rotary blades. It is said to be slightly wider than the lap width.

25 is a concave circumferential groove formed on the inner circumferential surface of the side blade, which is fitted into a convex circumferential groove 26 formed on the cylindrical boss portion 14 of the rotary blade shank 12, and the side blade 1
It is designed to take charge of the thrust force acting on the shaft 8.

(Problems to be Solved by the Invention) In the rotary blade 5 shown in FIG. The edge 15B is easily deformed, so when finishing the edge of the side blade 18 and reattaching it, the edge 15B
The deformation made it virtually difficult to attach.

In particular, since the shank 15 is an integral piece in the circumferential direction, such as an annular shape or a rectangular annular shape, maintenance is more difficult than that of the side blades 18.
Maintaining the Edge 15B's deformation was considered extremely difficult.

Further, since the claw portions 8 are integrally provided with the shank 15, it is difficult to change the number, arrangement, etc. of the claw portions 8 depending on the material.

This invention prevents deformation of the shank by covering the outer circumferential surface of the shank instead of the side blade, and by providing claws on the side blades, it is possible to freely change the number of claws and the arrangement of the claws. The main purpose is to do something.

(Means for Solving the Problems) The technical means taken by the present invention to achieve the above-mentioned object is characterized by a rotary blade 30 for a slitter type crusher having a material retraction claw portion 45 on the outer periphery. In the rotary blade shank 33 and a side blade 39 detachably attached to the side surface of the shank 33, the side blade 39 is divided on a radial line, and the cross section of the blade 39 is overlapped with the side surface of the shank. It has an L-shape consisting of a first wall surface 40 that overlaps with the outer circumferential surface of the shank, and a second wall surface 41 that overlaps the outer peripheral surface of the shank, and a material retraction claw portion 45 is provided on the second wall surface 41.

(Embodiment and operation) The rotary blade 30 according to the present invention is used in the same manner as the conventional example shown in FIGS. 11 and 12.

In FIGS. 1 and 2, 31 is a main shaft, and collars 32 and shank 33 are alternately fitted onto this main shaft 31 in the form of a skewer, and are attached with a key 34 in this example.

The shank 33 has an L-shaped cross section, and the cylindrical boss portion 35
has an annular shape, the outer peripheral surface of the shank part 36 is circular, and an annular engagement groove 37 is provided around the side surface of the shank part at the corner of the cylindrical boss part 35 and the shank part 36. Screw holes 38 are formed in the portion 36 in a radial arrangement in the direction of the main axis.

A side blade 39 is radially divided (divided into four pieces in FIG. 1) and overlapped with the side surface and outer peripheral surface of the shank 33.

The side blade 39 has a cross section L consisting of a first wall surface 40 that overlaps the side surface of the shank portion 36 and the outer peripheral surface of the cylindrical boss portion 35, and a second wall surface 41 that overlaps and covers the outer peripheral surface of the shank portion 36. A mounting hole 42 is formed in the first wall surface 40 in the direction of the main axis, and the mounting hole 42 and the screw hole 38 are connected to each other.
It can be freely attached and detached via a bolt 43 by matching the two.

Furthermore, in the embodiment, the first wall surface 40 has a hooking groove 37.
It has an annular protrusion 44 that is fitted into the
44 prevents shearing force from acting on the bolt 43.

The engaging groove 37 may be a hole groove having circumferential intervals, and the protrusion 44 may be a pin-shaped protrusion that is inserted therein.Furthermore, the groove 37 and the protrusion 44 may have male and female parts reversed from those shown in the drawing. .

A material retraction claw portion 45 is integrally formed on the second wall surface 41 of the side blade 39 .

It should be noted that some of the side blades 39 are not provided with the claw portion 45 as shown in FIG. 10, but in any case, when the rotary blade 30 is viewed as a whole, the claw portion 35 is always provided.

Furthermore, one end of the mounting hole 42 has a bolt head accommodating recess 42A.

In the embodiment shown in FIGS. 3 and 4, the shank 3
In this case, the screw hole 38 is passed through as shown in the figure, and the shank portion 36 is formed on the second wall surface 41 of the pair of left and right side blades 39.
It covers half of the outer circumferential surface of.

The other configurations are the same as those shown in FIGS. 1 and 2, and common parts are indicated by common symbols.

In addition, in FIG. 4, one side blade 3
When the blade 9 has the claw portion 45, the blade 39 that faces the blade 39 in the axial direction does not have the claw portion 45.

What is shown in FIGS. 5 and 6 is the side blade 39 itself, which has one claw portion 45 at the center in the outer circumferential direction divided into fan shapes, and FIGS. 1 shows one having two claw portions 45.

Further, the shape of the claw portion 45 may be a triangle as shown in FIGS. 5 and 7, or a beak shape as shown by a solid line or a chain line in FIG. 9.

In any case, the shape and number of the claw portions 45 are arbitrary, and the outer peripheral surface shape of the shank 33 may be rectangular in addition to circular. be done.

Therefore, it is sufficient that the side blade 39 is removably attached to the shank 33 with a bolt 43 in order to be applied to crushing according to the material and the particle size and shape of the crushed material.

Further, the shank 33 may have a shape in which the cylindrical boss portion 35 is integrated with the collar 32.

In addition, in FIGS. 1 and 3, reference numeral 46 indicates a radial mating surface.

(Effect of the invention) According to the invention, since the side blade 39 has an L-shaped cross section and has a first wall surface 40 and a second wall surface 41 that overlap the side surface and the outer peripheral surface of the shank 33, the side blade 39 has an L-shaped cross section. Not only the side surfaces but also the outer circumferential surface are covered, so that reassembly and division due to outer circumferential surface deformation can be performed without any problem.

In addition, a material retraction claw portion 45 is provided on the side blade 39.
Since the claws 45 are formed on the shank 33, the number and arrangement of the claws 45 can be designed more freely, and the rotary blade has claws that can be adapted to materials or crushed materials. Can be done.

Furthermore, since the claw portion 45 is provided on the blade 39, since the blade 39 is radially divided, even if the claw portion 45 breaks, it can be replaced as a small item.

[Brief explanation of the drawing]

FIG. 1 is a front view of the first embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view of FIG. 1, FIG. 3 is a front view of the second embodiment of the present invention, and FIG. 4 is a longitudinal cross-sectional view of FIG. 3. Fig. 5 is a front view of the first embodiment with only side blades, and Fig. 6 is a front view of the first embodiment with side blades only.
Figure 7 is a front view of the second embodiment with side blades only, Figure 8 is a sectional view taken along line B-B in Figure 7, and Figures 9 and 10 are respectively with side blades only. FIG. 11 is a sectional elevational view of an example of a crusher, FIG. 12 is an explanatory view of the same slitter-type rotary blade, and FIG. 13 is a sectional view of a conventional example. 30...Rotary blade, 33...Shank, 39...
Side blade, 40...First wall surface, 41...Second wall surface, 42...Mounting hole, 43...Bolt, 4
5...Material retraction claw part.

Claims (1)

[Claims for Utility Model Registration] A rotary blade 30 for a slitter type crusher having a material retraction claw portion 45 on the outer periphery is composed of a rotary blade shank 33 and a side blade 39 detachably attached to the side surface of the shank 33. In this case, the side blade 39 is divided on a radial line, and the cross section of the blade 39 is L-shaped, consisting of a first wall surface 40 that overlaps the side surface of the shank and a second wall surface 41 that overlaps the outer peripheral surface of the shank. The structure of a rotary blade for a slitter type crusher is characterized in that a material retraction claw portion 45 is provided on a second wall surface 41.