JPH0621554Y2 - Crusher - Google Patents

Description

[Detailed Description of the Invention] a. Technical Field of the Invention The present invention relates to a rotating body provided with a striker projecting in a radial direction by a centrifugal force in a case provided with an inlet on the upper side and an outlet on the lower side. And a crusher in which a screen is arranged so as to surround the outer periphery of the rotating body, and the raw material charged from above the case is crushed by the hitting element and the fine particles passing through the screen are discharged downward. The present invention relates to a crusher which can be removed in the axial direction or can be taken in and out in the axial direction without dividing the screen.

(B) Prior Art In the above-mentioned crusher, the central axis of the rotating body is conventionally supported by bearings on both sides of the case, and those bearings are fixed to the side wall of the case via the supporting member.

(C) Problems to be solved by the invention If there are bearings and supporting members on both sides of the case, the side walls of the case cannot be completely opened on both sides.
Therefore, the rotating body and the screen can be taken in and out in the direction orthogonal to the axis by removing the peripheral wall of the case or partially opening it. In the work of putting in and out in the direction orthogonal to the axis, since the rotating body is heavy, it is extremely complicated and takes a lot of time. Also, the screen cannot be put in or taken out unless it is divided. If the screen is divided, the connecting structure becomes complicated, and the connecting portion cannot not only perform the function of the screen but is also easily damaged by the impact of the pulverized material. Since it is necessary to further divide it and take it out in mutually opposite directions, or to incorporate a screen supplied from another direction, it is difficult to realize the screen exchange with many steps even if it is attempted to automate the screen exchange.

(D) Means for Solving the Problem The present invention is a crusher which allows one side wall of a case to be opened to allow a rotor to be inserted or removed from the opened side without dividing the screen. The structure is such that the rotating body is integrally rotatably connected to the drive shaft protruding from one side wall of the case by cantilever support, and the other side wall of the case can be opened almost entirely. The body is provided, and in the cantilevered support mode, the rotating shaft penetrating one side wall of the case and protruding inward is supported at two points by a pair of bearings provided inside and outside the case, The bearing provided inside is supported by a tubular body that horizontally projects from the side wall and the rotary shaft penetrates, and the central axis of the tubular rotary body is externally fitted to the bearing and the tubular body. And center the protruding tip of the drive shaft within its central axis. In another embodiment, the motor is fixed to the outside of one side wall of the case so that the motor shaft penetrates through the wall and reaches the inside of the case. This is because the rotating body was fixed to the shaft.

E On the other side of the case, almost the entire surface is opened by opening the door,
The rotating body and the screen can be horizontally taken in and out from the opened side.

F. Embodiment 1 FIG. 1 shows the first embodiment of the crusher according to the present invention, in which 1 is a case, case 1 has a hopper 2 on the upper side,
A discharge port 3 is provided below, and a rotary shaft 4 is horizontally provided at the center.
Penetrates the side wall 5 on one side and projects inward,
A rotating body 6 is fixed to the screen, and a screen 7 made of wire mesh
Are arranged so as to surround the outer circumference of the rotating body 6.
A reinforcing plate 8 is integrally provided on the outer surface of the side wall 5 orthogonally to the surface, and a bearing 9 is fixed to the reinforcing plate 8. On the inner side surface of the side wall 5, a bearing 11 is attached to the tip of a cylindrical body 10 having a base end fixed to the inner surface of the side wall 5 and horizontally projected.
The rotary shaft 4 penetrates the inside of the tubular body 10 without contacting the tubular body 10, and both bearings 9, 1 are attached.
Supported by 1. The rotating body 6 has a large number of disks 13, 13 ... Attached in parallel to a cylindrical center shaft 12, and the disks 13, 1 are arranged in parallel with the center shaft 12.
To the hammer pin 14 penetrating 3 ...
.. are attached, and the impact elements 15, 15 ... Are projected in the radial direction by the action of centrifugal force. The rotating body 6 receives the central shaft 12 from the bearing 1
1 and the cylindrical body 10 are externally fitted so as to completely cover them, and the tip of the rotating shaft 4 protruding from the bearing 11 is coupled to the central shaft 12 via a coupling body 16 provided in the central shaft 12. Has been done. On the other end of the rotary shaft 4 protruding outside the case 1, a gear 17 for connecting with the rotary shaft of the motor is fixed. On the other hand, the side wall 5 ′ of the case 1 opposite to the side wall 5 provided with the bearing 9 has the entire wall surface formed on the door body 18, and the fixing bolts 19 and 19 are provided.
・ It can be opened completely by removing.

In the crusher thus formed, the rotary body 6 can be taken out horizontally in the axial direction by leaving the door 18 open, and the screen 7 can be taken in and out in the same horizontal direction as the rotary body 6 without dividing.

As a result, the rotating body and the screen can be easily replaced by only a linear horizontal movement. In particular, since the screen does not need to be divided, the entire surface can be used as the screen surface, and the durability is excellent. The screen has a plurality of screen holders 21, 21, 21 on one side surface of the rotary plate 20, for example, as shown in FIG. Since the screen 7 for replacement, which is provided so as to be positioned and held by the screen holder 21 is manually moved in or out of the case by an unillustrated advancing / retreating mechanism, the screen can be easily replaced. There are great expectations for automation.

In the crusher of the present embodiment, since the rotating body is large and heavy, the rotating shaft is supported at two points, and the bearing on one side is arranged inside the central axis of the rotating body, but the rotating body is small and lightweight. Therefore, it is possible to directly attach the motor shaft.

Next, a modified embodiment thus formed will be described.

In FIG. 3, a motor 23 having a motor shaft 22 penetrating through the side wall 5 and horizontally projected into the case 1 is fixed to one side wall 5 of the case 1, and the rotating body 6 ′ is the case. Motor shaft 22 protruding into 1
Is attached directly to. This rotating body 6'has a large number of discs compared with the first embodiment, and is smaller and lighter to improve the safety factor, and in spite of being cantilevered, the strength problem is cleared. ing. The crusher of the second embodiment is also provided with a door 18 'on the side wall 5'on the other side as in the case of the first embodiment, and the rotating body 6'and the screen 7 are exchanged by axially moving them in and out.

Advantageous Effects According to the present invention, since one side wall of the case is completely opened, the rotating body and the screen can be axially taken in and out, and the screen need not be divided. Therefore, the operations are simplified, and particularly in the case of the screen, it is expected to improve the quality by automating the exchange and selecting and using an appropriate screen depending on the kind of the pulverized material.

[Brief description of drawings]

The drawings show an embodiment of a crusher according to the present invention.
The figure is a cross-sectional view of a crusher that is supported at two points and has a rotating body attached to a rotating shaft. FIG. 2 is a schematic view of a screen changing device.
The figure is a cross-sectional view of a crusher in which a rotating body is attached to a motor shaft. 1 ... Case, 2 ... Hopper, 3 ... Discharge port, 4 ... Rotating shaft, 5 ... Screen, 6, 6 '... Rotating body, 7 ...
Screen, 8 ... Reinforcing plate, 9 ... Bearing, 10 ... Cylindrical body, 11 ... Bearing, 12 ... Center axis, 13 ... Disk, 14 ... Hammer pin, 15 ... Impactor, 16 ... …
Combined body, 17 ... Gear, 18 ... Door body, 19 ... Fixing bolt, 20 ... Rotating plate, 21 ... Screen holder,
22 ... motor shaft, 23 ... motor

Claims (3)

[Scope of utility model registration request] 1. A rotating body having a striking element projecting in a radial direction by a centrifugal force in a case having an input port on the upper side and a discharge port on the lower side, and a screen surrounding the outer periphery of the rotating body. In a crusher that crushes the raw material charged from above the case with the hitting element and discharges the fine particles that have passed through the screen downward, the rotating body is cantilevered on the rotating shaft protruding from one side wall of the case. A crusher which is integrally rotatably connected to its rotating shaft by a support and has a door body provided on the other side wall of the case so that the other side wall can be opened substantially entirely. 2. A rotating shaft that penetrates through one side wall of the case and projects inward is supported at two points by a pair of bearings provided inside and outside of the case, and the bearing provided inside the case is horizontal from the side wall. It is supported by a cylindrical body that protrudes to the outside and the rotating shaft penetrates, and the central axis of the cylindrically formed rotating body is externally fitted to the bearing and the cylindrical body, and the protruding tip of the drive shaft within the central axis. The crusher according to claim 1, wherein the part is fixed to the central axis to perform cantilever support. 3. The motor is fixed to the outside of one side wall of the case so that the motor shaft penetrates the wall surface and heads into the case, and the rotor is fixed to the motor shaft headed into the case. The crusher according to claim 1 of the utility model registration claim.