JPH0724784B2 - Disc type pulverizer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention comprises a movable disk that is positively rotated and a fixed disk that is fixedly opposed to the movable disk with a predetermined gap. The present invention relates to a fine crusher used for crushing raw materials such as ceramics.

(Prior Art) Conventionally, in this type of disk type fine pulverizer, a movable disk and a fixed disk, which is fixedly opposed to the movable disk with a predetermined gap, are assembled in a cassette shape, and the movable disk is moved. The disk is connected to the rotary shaft of the machine base, and the object to be crushed introduced from the fixed disk side is crushed by the fixed disk and the movable disk rotated at high speed. Further, fine adjustment means is provided for finely adjusting the gap between the movable disk and the fixed disk at the time of this crushing. For this fine adjustment means, for example, a screw mechanism means is adopted. It is configured to be finely displaced by the means toward the movable disk side of the fixed disk side.

(Problems to be Solved by the Invention) However, it is difficult to adjust the gap between the movable disk and the fixed disk uniformly over the entire area by the above-described conventional fine adjustment means, and therefore it is not satisfactory as the fine adjustment means. It was

Therefore, in view of the above-mentioned conventional drawbacks, the present invention provides a disc type fine crusher capable of finely adjusting the gap between the movable disc and the fixed disc uniformly over the entire area and easily performing the fine adjustment. The purpose is.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention has a movable-side housing provided with a movable disk that is positively rotated, and the movable disk is fixedly opposed to a movable disk with a predetermined gap. In the fine crusher equipped with a fixed housing having a fixed disk, the two housings are connected to each other at a plurality of locations on the outer periphery through connecting means, and the housing on the one side is axially extended from near the center. The gist is that a pressing means is attached so as to apply the pressing force.

(Operation) When the object to be crushed is crushed, the pressing means applies an axial pressing force from the vicinity of the center to at least one of the movable side housing having the movable disk and the fixed side housing having the fixed disk. , The housing on the one side to which the pressing force is applied is uniformly bent with respect to the housing on the other side, and the gap between the movable disk and the fixed disk is finely adjusted by the bending of the housing on the one side. Is.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to the drawings. In the drawings, reference numeral 1 denotes a main body of a fine pulverizer of the present embodiment, which is a cylindrical main body erected on a base 2. A drive shaft 5 having a coupling 4 at its upper end is rotatably supported in the frame 3 from its lower end to substantially the central part, and this rotating shaft 5 is mounted on the base 2 as a drive. The motor 6 is connected to be positively rotatable via a transmission mechanism 7 including a pulley and a belt. A cylindrical cover member 8 having a predetermined space is formed on the outside of the main frame 3, and the inside of the cover member 8 is a crushing chamber 9 in which an crushing means to be described later is located above the main frame 3. , The upper part is the same grinding chamber 9
The exhaust passage 10 is connected to the entire outer circumference of the
And a discharge port provided at the bottom of the oblique portion of the discharge passage 10.
11 are defined on the outer periphery of the main frame 3.

The crushing means is installed in the crushing chamber 9 on the main frame 3 in a cassette shape, and the crushing means is the third,
As shown in FIG. 4, the movable side housing 14 is provided with a movable disk 13 that is rotated, and the fixed side housing 16 is provided with a fixed disk 15 that faces the movable disk 13 with a predetermined gap. ing. That is, the movable disk 13 has a grinding surface 13 formed with a diamond electrodeposition layer in which diamond fine particles are electrodeposited and coated on the upper surface of the flange.
a and a shaft portion 13b having a coupling 17 that is coupled to the coupling 4 of the drive shaft 5 at the lower end, and the movable housing 14 has a cylindrical shaft portion 14a and a disc-shaped flange portion 14b.
And the connecting projections 14c projecting at equal intervals at three outer circumferences of the disc-shaped flange portion 14b, and the movable disk 13 is ground in the cylindrical shaft portion 14a. The fixed housing 16 is rotatably supported with the surface 13a facing upward, and the fixed housing 16 has a cylindrical shaft portion 16a and a disk-shaped flange portion 16b.
And the connecting projections 16c which are projected at equal intervals on three outer circumferences of the disc-shaped flange portion 16b, and the disc-shaped flange portion 16b has diamond fine particles as the fixing disk 15 A grinding surface 15a formed as a diamond electrodeposition layer on which is fixed and coated is formed so as to face the grinding surface 13a of the movable disk 13, and the cylindrical shaft portion 16a is communicated with a hopper of an object to be ground described later. It is an entry path,
Then, the two housings 14 and 16 make the grinding surface 13a of the movable disk 13 and the grinding surface 15a of the fixed disk 15 predetermined (small).
In the state where they are opposed to each other with a gap of, the adjusting bolts 19 and 20 are respectively provided from above and below at the three connecting projecting pieces 14c and 16c facing each other with the interval adjusting member 18 including a spacer interposed.
Are combined in. As a result, the crushing means includes the movable side housing 14 having the movable disk 13 and the fixed disk.
A stationary housing 16 having a stationary housing 16 is assembled as a cassette, and as shown in FIG. 1, a cylindrical shaft portion 14a of a movable housing 14 is received by a member 21 with respect to an upper portion of the main frame 3. Then, the coupling 17 of the movable disc is attached to the coupling 4 of the drive shaft 5 while being fitted. The movable housing
A small gap is maintained between the upper surface of the disk-shaped flange portion 14b of 14 and the lower surface of the flange portion that forms the grinding surface 13a of the movable disk 13, and the movable flange 14b of the movable-side housing 14 is movable. Side housing 14 and fixed side housing 16
Positioning sensor mounting holes 22 for the movable disk 13 and the fixed disk 15 are provided in the projecting pieces 14c, 16c at one of the opposite positions.
a and 22b are also the disk-shaped flange portion 1 of the fixed side housing 16.
A temperature sensor mounting hole 22c is formed through 6b.

The elevating frame 23 is composed of two rods 23a and a substrate 23b connecting the upper ends of the rods 23a, and the rods 23a are installed on the base 2 in parallel with the main frame 3 to guide the two. The lid 25 is mounted so as to be able to move up and down in the bracket 24, and further, in the center of the upper portion of the substrate 23b of the lifting frame 23, there is a lid 25 that also extends horizontally above the crushing chamber 9 and also serves as a pressing member. A rear end portion of the arm 26 is rotatably supported in a horizontal direction via a support shaft 26a.

A fluid pressure cylinder 27 for pressing is erected on the base 2 in parallel with the guide placket 24, and the upper end of the rod 27a is connected to the lower portion of the board 23b of the elevating frame 23. The lid 25 that also serves as the pressing member is moved up and down by the forward / backward movement of the rod 27a of the fluid pressure cylinder 27.

The lid 25 also serving as the pressing member includes the arm 26, a fixing ring 28 attached to a front end portion of the arm 26, a tubular portion attached to the fixing ring 28 and opened downward, and the fixing ring 28 shape. Cap-shaped pressing member 29 having a flange that abuts against the pressing member 29, and a plurality of cylinders of the pressing member 29 are fitted to the pressing member 29 (4 in the figure).
And a lid portion 31 that is vertically swingably suspended by connecting bolts 30 to 30 and covers the crushing chamber 9. The pressing member 29 is configured so as to be fitted to the cylindrical shaft portion 16a of the fixed side housing 16 of the crushing means in a state of being in contact with the upper end surface when the cover is covered, and the crushed object is placed in the central portion. The input port 29a is provided through. Then, the lid 25 receives a downward pressing force due to the retracting movement of the rod 27a of the fluid pressure cylinder 27, and the pressing member 29 of the lid 25 of the fixed side housing 16
A pressing force is applied to the cylindrical shaft portion 16a in the axial direction at the central portion thereof. It should be noted that the connecting bolts 30 to 30 are wound between the pressing member 29 and the lid 31 and are always covered.
Compression springs 32 to 32 for urging 31 downward are mounted.

A hopper portion 33 for putting an object to be crushed is provided on the fixing ring 29 of the lid body 25, and a charging cylinder 34 formed in the lower portion thereof is fitted into the charging port 29a of the pressing member 29, and inside thereof. Means for feeding the material to be crushed to the charging cylinder 34 side is provided.

Therefore, in this embodiment, the position sensor mounting hole is
Position sensors 35 and 36 for detecting the positions of the movable disk 13 and the fixed disk 15 are attached to the insides of 22a and 22b, respectively, and a temperature for detecting the temperature of the movable disk 13 and the fixed disk 15 is inside the temperature sensor attachment hole 22c. A sensor 36a is attached, and the minute gap between the movable disk 13 and the fixed disk 15 is a pressing member of the lid 25 as shown in FIG.
The hydraulic servo unit 37 for controlling the operation of the fluid pressure cylinder 27 for applying the pressing force to the pressure sensor 29 is configured to be computer-controlled based on these detections.

The fine crusher of this example is configured as described above,
The drive shaft 5 is driven by the drive motor 6 via the transmission mechanism 7.
Is rotated at high speed, and the movable disk 13 in the crushing means connected to this via couplings 4 and 17 is rotated at high speed in the movable housing 14. Then, when the material to be crushed in the hopper section 33 is supplied to the charging path of the fixed side housing 16 in the crushing means through the charging cylinder 34 and the charging port 29, the grinding surface 13a of the movable disk 13 rotating at high speed and the fixed disk. The object to be crushed is crushed into fine powder with 15 grinding surfaces 15a. Then, it is pulverized into the pulverized fine powder. Then, the pulverized fine powder pulverized material is crushed from between the movable side housing 14 and the fixed side housing 16 into the crushing chamber 9.
In addition to being blown in, it is collected from the discharge passage 10 to the discharge port 11 and discharged to the outside.

Now, referring to FIG. 6 as an example of adjusting a minute gap between the ground surface 13a of the movable disk 14 of the movable housing 14 and the ground surface 15a of the fixed disk 15 of the fixed housing 16 in the crushing process. And explain.

The position sensors 35 and 36 detect the positions of the movable disk 13 and the fixed disk 15, and the temperature sensor 36a detects the temperatures of the movable disk 13 and the fixed disk 15, and further detects the current values related to the rotational speed of the drive motor 6. Then, based on the detected value and the input value of the initial gap, the arithmetic unit 38 in the computer calculates the actual disc gap. Then, the calculated value and the target gap value set in advance for the object to be crushed are compared and calculated by the comparison section 39, and the value is output-amplified to operate the hydraulic servo unit 37. The servo valve 40 is operated by the operation command and the fluid pressure cylinder 27 is operated. Therefore, if the current gap is larger than the value calculated by the comparison, the fluid pressure cylinder 27 is controlled so as to retract the rod 27a, and the pressing force is interposed by the pressing member 29 in the lid 25 and the fixed side housing. It is attached to the cylindrical shaft portion 16a at the center of 16. Therefore, the gap between the grinding surfaces 15a and 13a of the fixed disk 15 of the fixed housing 16 and the movable disk 14 of the movable housing 14 is adjusted in a state where it is narrowed from the beginning. If the current gap is smaller than the value calculated by the comparison, the fluid pressure cylinder 27 is controlled so as to advance the rod 27a, and the pressing force is applied to the lid 25.
It is applied to the cylindrical shaft portion 16a at the center of the fixed-side housing 16 via the pressing member 29. Accordingly, the gap between the grinding surfaces 15a and 13a of the fixed disk 15 of the fixed housing 16 and the movable disk 14 of the movable housing 14 is adjusted to be wider than it was originally.

In this case, the fixed housing 16 to which the pressing force is applied is
The fixed side housing 16 and the movable side housing 14 are connected to each other by protruding the outer circumference thereof, and at a position of three connecting projections 16c, 14c spaced at equal intervals, a space adjusting member 18 including a spacer is provided. Adjusting bolts 19 and 20 from above and below
And the pressing force is applied in the axial direction of the cylindrical shaft portion 16a at the center thereof, so that the fixed side housing 16 as a whole flexes uniformly. It can be adjusted to.

The fine adjustment described above is automatically performed during pulverization.

Further, since the crushing means is assembled in a cassette shape by the movable side housing 14 and the fixed side housing 16, when the grinding surfaces of the disks 13 and 15 are greatly worn, the crushing means as a whole is As a matter of course, it can be removed from the device and reused for dressing or the like. In this case, adjustment of the gap between the grinding surface 13a of the movable disk 14 of the movable housing 14 and the grinding surface 15a of the fixed disk 15 of the fixed housing 16 includes spacers at the three connecting projections 14c and 16c. This is done in advance by adjusting bolts 19 and 20 with a space adjusting member 18 interposed.

In this embodiment, the fixed side housing 16 in the crushing means is used.
Although the pressing force of the fluid pressure cylinder 17 is applied to the above, it may be applied to the movable housing 14 side.

(Effects) As described above, the present invention has an effect that the gap between the movable disk and the fixed disk can be finely adjusted uniformly over the entire area, and the fine adjustment can be easily and easily performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, FIG. 1 is a partially cutaway front view, FIG. 2 is a plan view, and FIG. 3 is a partially broken front view showing a crushing means. FIG. 4 is a plan view showing the crushing means, and FIG.
The figure is a front sectional view showing the pressing member, and FIG. 6 is a block diagram showing the operation relationship. 13 ... Movable disc, 15 ... Fixed disc 14 ... Movable side housing 16 ... Fixed side housing 18 ... Spacing adjustment member 19, 20 ... Adjustment bolt 27 ... Fluid pressure cylinder 29 ... Pressing member

Claims (1)

[Claims] 1. A fine crusher equipped with a movable side housing having a movable disk that is positively rotated and a fixed side housing having a fixed disk that is fixedly opposed to the movable disk with a predetermined gap. In addition, the two housings are connected to each other at a plurality of positions on the outer periphery through connecting means, and a pressing means is attached to the one housing so as to apply a pressing force in the axial direction from the vicinity of the central portion by the pressing means. A disc type fine crusher characterized by.