JP3510185B2 - Crusher sealing mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing mechanism for a crushing device having two upper rolls for crushing.

[0002]

2. Description of the Related Art Two upper rolls are driven in opposite directions so that the material to be crushed supplied to each other is caught between the two rolls, and one of the rolls feeds the material to be crushed and the other feeds the material. The feed direction of the crushed material by the roll of is reversed,
And the rotation speed of the other roll is larger than one roll,
For example, it is set to double. Then, the material to be crushed is brought close to the end in the feed direction by the roll having the double rotation speed,
Especially when there is a large amount of material to be crushed near that part, the material to be spilled overflows over the roll end plate and the upper part of the roll flange where the roll end plates are connected in a non-rotatable manner, and the roll bearing part There is a possibility that the bearing may be worn due to intrusion.

[0003]

Even if the material to be crushed overflows over the upper end of the roll and the upper part of the roll flange to which the end plate of the roll is non-rotatably connected, the crushed material enters the roll bearing and wears the bearing. Need to avoid the fear of.

[0004]

According to a first aspect of the present invention, in a crushing device having two upper rolls for crushing, an upper side surface of a roll flange to which an upper roll end plate is non-rotatably connected.
The outer seal protector, which is partially cylindrical, from the inner lining plate provided on the frame in close proximity to each other.
From the center of the roll flange above to the annular inner side
Place both seal protectors in close proximity to each other
The space between the rolls and the roll bearing
Partial cylinder of the outer seal protector facing the flange
The upper roll is rotated to draw the discharge force to the upper roll side.
Inner seal that is provided with a raising screw and faces the central boss
Rotate the center boss on the facing surface of the protector
The screw part that causes the discharge force to the upper roll side
This is a seal mechanism for the crushing device, which is characterized by the fact that it is punctured .

According to a second aspect of the invention, the roll flange
The radial discharge blade is provided on the surface of the space side in a protruding manner.
It is a sealing mechanism of the described crushing device .

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In FIG. 1, 1 and 2 are upper rolls, 3 is a lower roll, and thick arrows indicate the direction of rotation and the number of rotations. 4 and 5 are wear plates and swing cases forming the upper parts of the left and right side plates, 6 is a counter knife forming the lower parts of the left and right side plates, 7 is the front and rear side plates, 8 is a hopper, 9 is a discharge port, 10, 11 Is a frame. The counter knife 6 also serving as the left and right side walls, the swing case 5 cooperating with the counter knife 6, and the reinforcing structure thereof are as disclosed in Japanese Patent Application Laid-Open No. 11-57522 and Japanese Patent Application No. 2000-3527.

In FIG. 2, which is a view taken along the arrow II in FIG . 1, the upper rolls 1 and 2 have spiral blades 15 and 16 in the same twisting direction.
The upper roll 1 with a large number of rotations sends the material to be crushed to the left, and the upper roll 2 with a small number of rotations has a larger amount of material to be sent to the right. Between the two, the material to be crushed is crushed by the shearing action and falls down, further crushed by the shearing action with the lower roll 3 (FIG. 1), and discharged downward from the discharge port 9. In the meantime, due to the large feed action of the upper roll 1 to the left in FIG. 2, the crushed material is apt to accumulate at the left end portions of both rolls 1 and 2 in FIG. It becomes noticeable when a large amount of crushed material is put near the left end,
The collected crushed material exceeds the end plates 17 of the rolls 1 and 2 and the upper part of the roll flange 18 to which the end plates 17 are non-rotatably connected, and the bearing portion 21 of the hydraulic motor 20 for the upper roll 1 shown in FIG. It becomes easy to invade. 22 is a flange, 23 is a roll coupler, 24 and 25 are fastening bolts, 26 and 2
7 is a key.

In order to prevent the overflowed crushed material from entering the bearing portion 21, an inner lining plate 29 and an outer seal protector 30 are attached to the frame 10 of FIG. 3 by bolts 31.
Are tightened together. As shown in FIGS. 4 and 5, the seal protector 30 has a partially cylindrical shape, the flange portion 32 is provided with a bolt insertion hole 33, and the thread portion 35 (FIG. 6) on the inner peripheral surface of the partial cylindrical portion 34 is in contact (contact). Alternatively, the discharge force (see FIG.
In the arrow direction to the right, and in FIG. 6 the arrow direction to the left). The seal protector 30 in FIG. 3
To facilitate degradation of the upper roll 1, it is in contact only with the paired circumferential surface of the roll flange 18. Since the rotation direction of the other upper roll 2 is opposite to that of the upper roll 1, the twisting direction of the thread portion of the seal protector is opposite to that in FIGS.

[0009] In FIG. 3, an annular inner seal protector 3 7 fastened by bolts 38 to the lining plate 29 is provided with a threaded portion 40 on the inner surface of the cylindrical portion, the threaded portion 40 against the outer peripheral surface of the roll coupler 23 They are in contact with each other, and the twisting direction of the threaded portion 40 is determined so as to generate a discharging force to the right in FIG. 3 by the rotation of the roll coupler 23 . The outer circumferential surface of the B Rukapura 23 plays the function of a central boss portion of the roll flange 18.

A plurality of radial discharge blades 42 are integrally formed on the left side surface of the roll flange 18 of FIG. The discharge blade 42 acts as a centrifugal blade when the roll flange 18 rotates, discharges the air in the space 43, and at the same time exhibits a function of preventing dust and dust from entering the space 43.

In order to prevent from entering the bearing portion side of the dust from a substantially triangular space 44 surrounded by the three rolls 1, 2 and 3 of Figure 1, the seal protector 45 as shown in FIG. 7 Similarly, it is also effective to mount it on the lining plate 29 (FIG. 3). It is also effective to dispose a partially cylindrical seal protector 46 for preventing the intrusion of dust from the discharge port 9 side in FIG. 1, and the structure thereof is shown in FIG. However, although FIG. 8 is upside down, the same symbols as in FIG. 3 are corresponding parts.

In FIG . 2, reference numerals 50 and 51 denote, for example, three first cutters facing each other at the same axial position and equidistantly on the circumference of each of the rolls 1 and 2, and having a short axial length,
In the discontinuous portion of the spiral blades 15 and 16, the crushing action of the crushed material accumulated in cooperation is exhibited. FIG. 9 shows I of FIG.
It is an X-IX sectional schematic diagram. Further, reference numerals 52 and 53 in FIG. 2 are second cutters. These are slightly displaced to the right in the axial direction with respect to the first cutters 50 and 51 and are circumferentially displaced from each other, so that the impact due to the sudden meshing with the first cutters 50 and 51 at the same time occurs. It is blocking as much as possible.

[0013] is submitted to the left end of FIG. 3 overflow likely to be crushed material by helical blades 15 during the crushing operation is entering the space 43 is effectively prevented by the outer seal protector 30. In addition to the outer seal protector 30
Te, the penetration of dust into the bearing portion 21 by providing the inner side seal protector 37 and the discharge vane 42 can be reliably prevented. Of course, in addition to the outer and inner seal protectors 30 and 37 , the protection function becomes more complete by providing the discharge vanes 42.

[0014]

According to the first aspect of the present invention, the material to be crushed which is drawn up and overflows by the upper roll 1 can be prevented from entering the bearing portion side at the position closest to the upper roll 1, thus ensuring the effect. is there. Further, since the discharging force due to the twist of the screw portion 35 can be utilized, it becomes possible to prevent dust from entering more reliably. In addition, the diameter of the inner seal protector 37 is reduced, the structure is simplified, and when it is used together with the outer seal protector 30, the bearing protection function is remarkably improved. Further, since the discharging force due to the twisting of the screw portion 40 can be utilized, it becomes possible to more reliably prevent dust from entering.

According to a second aspect of the present invention, by the action of the discharge vane 42, there is an advantage capable of strongly reliably prevent dust intrusion.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional front view.

FIG. 2 is a schematic plan view taken along the line II of FIG.

FIG. 3 is a vertical sectional side view.

FIG. 4 is a front view of an outer seal protector.

FIG. 5 is a plan view of the outer seal protector.

6 is a sectional view taken along line VI-VI in FIG. 4 and a partially enlarged view.

FIG. 7 is a front view of a seal protector between upper and lower rolls.

FIG. 8 is a vertical sectional side view.

9 is a schematic cross-sectional view taken along the line IX-IX of FIG.

[Explanation of symbols]

1, 2 upper roll 10, 11 frames 18 roll flange 23 Roll coupler (central boss) 29 Liner 30 Outer seal protector 35 Thread 37 Inner seal protector 40 screw part 42 Discharge blade

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Claims (2)

(57) [Claims] 1. A crushing apparatus having two upper rolls for crushing, wherein a partial cylindrical shape is provided from a lining plate provided on a frame only for the upper side surface of a roll flange to which the upper roll end plate is non-rotatably connected. Outer seal protectors are closely opposed to each other, and an annular inner seal protector is closely opposed to the center boss portion of the roll flange from the inner lining plate, and the roll bearing portion and the upper roll side are provided between both seal protectors. To form a space away from the outer flange of the outer seal protector facing the roll flange is provided with a screw portion that causes the discharge force to the upper roll side by the rotation of the upper roll,
A seal mechanism for a crushing device, characterized in that a screw portion that causes a discharging force to the upper roll side through the space by rotation of the central boss portion is provided on the facing surface of the inner seal protector facing the central boss portion. 2. Radiation on the surface of the roll flange on the space side.
The crushing device according to claim 1, wherein the discharge vanes are shaped like protrusions.
Seal mechanism.