JP3507052B2 - Crusher particle size adjustment 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 particle size adjusting mechanism provided in a crusher for crushing various kinds of waste in a cylindrical shell.

[0002]

2. Description of the Related Art A crushed material such as various kinds of waste is put into a cylindrical shell and crushed between a shell liner inside the shell and a breaker hammer or a breaker liner or grinder provided outside a rotary shaft around the shell. A vertical crushing device is known. Such a vertical crushing device is generally provided with a particle size adjusting device for the material to be crushed, and an example of the vertical crushing device equipped with such a particle size adjusting device is an actual open sho 62-6563.
No. 48 (Gazette 1).

In the crushing device described in this publication, a cylindrical shell is provided on a discharge tube, a shell liner is fixed inside the shell, and a breaker hammer, a breaker liner, or a rotary shaft provided at the center of the shell, or Attach a crushing member such as a grinder, install a choke ring between the shell and the discharge tube to adjust the particle size of the crushed object, and fasten the discharge tube and shell to the upper or lower flanges with bolts. , A sweeper is provided inside the discharge cylinder to collect the crushed material crushed by the crushing member with a rotating arm.
The crushed material sent in a certain direction is sent to the discharge port by the pressure of the sweeper.

The choke ring for adjusting the grain size is
A fixed choke ring having a plurality of holes for allowing the crushed material to pass therethrough and a movable choke ring having a plurality of holes corresponding to the holes of the fixed choke ring are provided in an overlapping manner, and the movable choke ring is rotated to allow the choke rings to rotate. The particle size of the crushed material that passes through is adjusted by the deviation of the holes.

As another example of the vertical crushing device equipped with the particle size adjusting device, the one disclosed by Japanese Patent Laid-Open No. 2000-254532 (publication 2) is known. In the vertical crushing device according to this publication, a triangular thick member is inserted between the lower end flange of the cylindrical shell and the upper end flange of the discharge cylinder as a supporting member for the cylindrical shell, and the thick member and A plurality of movable choke rings that can be moved forward and backward in the radial direction are provided in the gap between the members, and the movable choke ring is moved forward and backward by the driving means, and the movable choke ring is fixed to the lower or upper flange by the tightening means. It constitutes the particle size adjustment mechanism.

[0006]

In the type of choke ring of the vertical crushing device according to the above publication 1, the particle size of the crushed material is set by the degree of overlap between the holes of the fixed choke ring and the holes of the movable choke ring, and accordingly the hole. It is possible to select any pore size smaller than or equal to the diameter, and finely adjust the particle size. Further, in this type, most of the long objects cannot pass through the holes, and the long objects do not actually block the holes. However, since the string-like material has a small diameter and is continuously connected like a string, even if the hole diameter is reduced, a part of the string-like object often enters the hole and the hole is often clogged.

On the other hand, in the choke ring type of the vertical crushing device of Publication 2, since the movable choke ring is moved back and forth in the radial direction to set the particle size of the crushed material, the inner circumference of the movable choke ring is The gap between the rotor and the rotor is set in a donut shape (ring shape). The gap is set to the minimum value according to the grain size, but since it is formed in a donut shape,
A string-like object does not get caught, but a long object definitely passes. Therefore, it is difficult to discharge the crushed material in a state where the set particle size is uniform.

In consideration of the above problems, the present invention provides a crusher with a particle size adjusting mechanism having a simple structure in which a long object is not discharged and a string-like object is not clogged. An object of the present invention is to provide a crusher particle size adjusting mechanism capable of easily and efficiently adjusting the particle size of a crusher.

[0009]

As a means for solving the above problems, the present invention provides a lower end of a cylindrical shell for crushing an object to be crushed between a breaker hammer, a breaker liner, and a grinder provided on the outer circumference of a rotary shaft. Fix the cylindrical shell to the discharge cylinder by inserting support members at multiple points on the circumference of the flange between the flange and the upper end flange of the discharge cylinder that supports the cylindrical shell and discharges the crushed material. A plurality of movable choke rings that can move back and forth in the radial direction are provided in the gap between the support member and a comb tooth edge having a plurality of notches is formed on the inner peripheral edge of the movable choke ring. comprising moving means for advancing and retreating it radially, the fixing means for fixing together in the bottom flange or top flange of the movable choke ring at a predetermined position, the movable switch
Circle with oak ring on top of chalk ring plate with comb edges
Two rings of the lower choke ring plate with arcuate edges
It is formed from a plate, and the arc-shaped periphery of the lower choke ring plate is
It overlaps with the notch of the comb tooth edge of the oak ring plate at any position
Lower choke ring board to upper choke ring board
And movably overlap each other , and set a predetermined gap between the rotor and the inner peripheral edge of the comb teeth to be less than the set grain size, and finely adjust the grain size.
The crusher particle size adjusting mechanism is configured so that

In the crusher particle size adjusting mechanism having such a structure, the crushing particle size is adjusted as follows. When crushing an object to be crushed, the requirements for the size of each crushing particle differ depending on the type, so the gap between the rotor and the choke ring installed in the cylindrical shell must be the specified size before operating the crusher. The particle size is adjusted by adjusting to. Since the choke ring is a movable choke ring and can be moved back and forth in the radial direction, the fastening by the fixing means is loosened to make the movable choke ring movable, and the moving means moves the movable choke ring.

When the movable choke ring is advanced in the inner diameter direction and moved to come into contact with a crushing member such as a rotor, the movable choke ring is retracted outward with the position as a reference position. When the amount of movement reaches a predetermined size, a predetermined gap is formed between the movable choke ring and the crushing member at that time, and the particle size of the crushed material passing through the gap is adjusted to be a predetermined size or less.

When the movable choke ring is stopped at a predetermined position, the cylindrical shell is integrally fixed to the discharge cylinder by tightening at that position between the lower end flange and the upper end flange by the fixing means. By this tightening and fixing, the movable choke ring can be held without changing the gap even if the impact force received through the crushed object during the operation of the crusher acts on the movable choke ring.

The position of the inner peripheral edge of the movable choke ring is set with a slight gap between it and the outer peripheral edge of the rotor. This gap is less than half of the set crushing particle size diameter, which is much smaller than the conventional one, and is a ring-shaped gap, but because the distance is short, a long object like the conventional one lays in the ring-shaped gap. Is completely prevented from passing,
Long items are never discharged.

Since a large number of notches are formed on the inner peripheral edge of the movable choke ring, crushed objects having a set grain size or smaller are discharged from the passage holes formed by the slight gaps and notches. . For this reason, the crushed objects having the set diameter or less are accurately selected. In addition, since a large number of notches are provided on the inner peripheral edge, it is possible to smoothly discharge the string-shaped material without clogging the hole as in the conventional case.

The ring-shaped gap is set by moving the movable choke ring by the moving means, and when the movable choke ring reaches a predetermined position, it is fixed integrally by the fixing means. When setting the clearance with the movable choke ring, move the movable choke ring.
Since being formed of two choke ring plate of the lower choke ring plate having a choke ring plate and the arc-shaped inner peripheral edge above having Kushihaen, the overlapping position of the lower choke ring plate against the upper choke ring plate Adjusting the effective length of the notch of the upper choke ring plate at the inner peripheral edge of the lower choke ring plate by shifting it to make fine adjustments.
You can The upper and lower choke ring plates may be provided so that the upper side and the lower side are reversed.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a main vertical cross-sectional view of the vertical crusher of the embodiment. Reference numeral 1 is a cylindrical shell, 2 is a discharge ring (discharge ring), and the cylindrical shell 1 has a shallow taper shape with a wide upper part, and the upper end opens as a charging port, and is supported and fixed by the discharge tube 2. There is. A large number of shell liners 3 are arranged inside the cylindrical shell 1 at predetermined intervals.

Breaker liners 5 and 5 are provided near the upper portion of a vertical rotary shaft 4 provided at the center of the cylindrical shell 1.
Disc-shaped rotor plates 6a, 6b, 6c that form the rotor 6 as a whole are attached from the intermediate position to the lower part, and a plurality of rotor plates 6a, 6b and 6b, 6c are provided between the rotor plates 6a, 6b and 6b, 6c via grinder pins 7. Grinders 8, 8 are rotatably attached. A breaker hammer may be attached instead of the breaker liners 5 and 5, and the structure of the crushing member attached to the rotary shaft 4 is arbitrary.

FIG. 2 is a view taken along the line II--II in FIG. 1, and FIG.
It is sectional drawing seen from III-III. In this figure, the crushing member inside the cylindrical shell 1 is omitted.
As shown in FIG. 1, the lower end flange 11 of the cylindrical shell 1
A movable choke ring 13 is inserted between the upper end flange 12 of the discharge tube 2 and the movable choke ring 13, as shown in FIGS. (In the illustrated example, each of them is provided at 6 places and at intervals of 60 °). The number of installation locations is arbitrary.

As shown in FIG. 4 (a), the support member 14 is a member that serves as a distance piece for holding the lower end flange 11 and the upper end flange 12 at a constant distance, and is constituted by a bolt 15 and a nut. Both flanges 11,
Tighten 12 and fix. The plan view shape of the support member 14 is
Although it has a substantially triangular shape as shown in FIG. 2, it may have another shape depending on the number of places provided. Since the supporting member 14 shown in the figure has the same thickness as the movable choke ring 13 described later, two plate members having the same plate thickness as the two movable choke rings are used.

As shown in FIGS. 2 and 3, the movable choke ring 13 is formed of a flat plate having a substantially trapezoidal shape in plan view, and both sides thereof are parallel to each other for moving back and forth in the radial direction.
The inner diameter side is curved (arcuate) according to the rotor radius, and the outer side is trapezoidal. In addition, the movable choke ring 13
In this example, the support member 14 has a thickness of two and is the same as the support member 14 described above.
Two plate materials having the same thickness as the above are used. The upper and lower choke ring plates 13a and 13b are slightly thicker at the upper side than at the lower side, but the thickness ratio is arbitrary.

The upper choke ring plate 13a of the movable choke ring 13 has an inner peripheral edge formed in a curved shape (arcuate shape) with a slight clearance from the outer peripheral surface of the rotor plate 6c, and a large number of notches are formed in the inner peripheral edge. 13k is provided to form a comb edge. The above-mentioned slight gap with the comb tooth edge is set to a size equal to or smaller than the set particle size diameter, the reason for which will be described later. Lower choke ring plate 13b
Although the inner peripheral edge is curved (arcuate), the gap with the outer periphery of the rotor plate 6c is formed so as to have a size that substantially matches the above-mentioned notch depth. The lower choke ring plate 13b is provided for adjusting the effective length of the notch depth, as will be described later.

Moving means for moving the respective choke ring plates in the radial direction in a state where they are superposed on the upper and lower choke ring plates 13a, 13b at the positions shown in FIGS. 2 and 3. 20 and for fixing the upper and lower choke ring plates 13a and 13b at predetermined positions between the lower end flange 11 and the upper end flange 12 or slightly lifting the cylindrical shell 1 to adjust the position of the choke ring plates. Slotted holes 17, 17 and 18, 19 are provided. The moving means 20 includes a base portion 21 fixed on the lower end flange 11, a screw bolt 22 rotatably held by the base portion 21, and a moving piece 23 having a nut screwed to the screw bolt 22. FIG. 5 shows a partially enlarged perspective view around the moving means 20.

The moving means 20 are provided on the upper and lower surfaces of the upper and lower choke ring plates 13a and 13b, respectively, in symmetry with each other. The screw bolt 22 is rotatable with respect to the base portion 21, but is held so as not to move in the horizontal direction. When the head 22a of the screw bolt 22 is rotated by a tool such as a wrench, the moving piece 23 engaging with the screw bolt 22 moves in the horizontal direction, whereby the moving piece 23 is attached and the lower choke ring plate is attached. 1
3a or 13b is configured to move in the radial direction.

The elongated holes 17 and 17 are provided in parallel with both sides of the upper and lower choke ring plates 13a and 13b, and when each choke ring plate is set at a predetermined position, it will not move due to impact at the time of crushing. Insert the bolt / nut 17B and fix it. Slot 18 is jack bolt 18B
4C, the jack bolt 18B is screwed into the screw hole formed in the lower end flange 11 of the cylindrical shell as shown in FIG. 4 (c), and the lower end is inserted into the elongated hole 18. Then, the jack bolt 18B is rotated to float the lower end flange 11 and lift the cylindrical shell 1 to eliminate the load on the upper and lower choke ring plates 13a and 13b. The radial position can be adjusted.

The elongated hole 18 is provided at one place on the upper and lower choke ring plates 13a and 13b, and the total length is 6 in total.
It is designed to lift the cylindrical shell at some point. The elongated hole 19 is also used for lifting the cylindrical shell, and a hydraulic jack (not shown) is buried in the elongated hole to raise and lower the lower end flange 11 by hydraulic pressure. Generally, the jack bolt of the long hole 18 is used, and the equipment of the hydraulic jack is optional. Therefore, the long hole 19 may not necessarily be provided, but only the long hole 19 is provided to make the product common. ing.

The particle size adjusting mechanism of the vertical crusher of the embodiment configured as described above is adjusted and set as follows. The position of the movable choke ring 13 is adjusted in advance so that the upper and lower choke ring plates 13a and 13b come to the positions shown in FIGS. When performing such position adjustment work, first, the bolts and nuts 15 attached to the support member 14 are loosened so that the cylindrical shell 1 can be lifted. At the same time, the bolts / nuts 17B, 17B fitted in the elongated holes 17, 17 of the fixed member of the movable choke ring 13 are also loosened.

In this state, the jack bolt 18B fitted in the oblong hole 18 is rotated by a tool to rotate the cylindrical shell 1
The lower end flange 11 is provided with a slight gap from the upper surfaces of the support member 14 and the movable choke ring 13 so that the movable choke ring 13 can move in the radial direction. In this case, a plurality (six in the illustrated example) of jack bolts 18B are lifted little by little so that the lifting distances are substantially equal. The lower surface of the lower end flange 11 is a movable choke ring 13.
When the movable choke ring 13 is lifted up to a clearance of at least several millimeters from the upper surface, the position of the movable choke ring 13 is adjusted in the radial direction to adjust the clearance with the rotor plate 6c.

The setting of the movable choke ring 13 is as shown in FIG.
The position shown in FIG. 3 is as designed, but if the movable choke ring 13 projects outward from the position shown in the drawing, the position is adjusted by the moving means 20. Transportation 20
The head 22a of the screw bolt 22 of is rotated with a tool,
The lower choke ring plates 13a and 13b are gradually moved so as to come to the illustrated positions. In this case, whether or not the upper and lower choke ring plates 13a and 13b have moved to the positions shown in the drawing is determined by moving the upper and lower choke ring plates 13a and 13b in the center direction by, for example, the moving means 20. The upper and lower choke ring plates 13a, 13b, respectively, by the amount of the clearance distance to be set.
Should be pulled back in the opposite direction. Alternatively, a method of inserting a thin gauge plate into the gap can be adopted.

When the movable choke ring 13 is set to the designed position, the jack bolt 18B is loosened to lower the cylindrical shell 1, and the lower end flange 11 is brought into contact with and supported by the support member 14 and the movable choke ring 13. , Bolts / nuts 17B and support members 14 that fit into the long holes 17
Movable choke ring 1 to the lower end flange 11 and the upper end flange 12 by tightening the bolts and nuts 15 of
3 and the support member 14 are fixed.

As a result, the rotor 6 is rotated so that the crushing work can be performed. In this case, at the position of the upper choke ring plate 13a shown in FIG. 2, a slight gap d is provided between the comb tooth edge at the inner peripheral edge and the rotor plate 6c. It is set to less than half the diameter.
For example, in the example shown in the figure, the particle size diameter is 50 mm and the gap is 5 mm.
Is. This is because a large number of notches 13k are provided in the comb tooth edge. The distance D between the depth of the notch and the rotor plate 6c corresponds to the size of the gap corresponding to the conventional general grain size diameter. The particle size can be adjusted by arbitrarily adjusting the gap d.

On the other hand, the lower choke ring plate 13 shown in FIG.
The inner peripheral edge of b is formed so as to substantially coincide with the depth of the notch provided in the choke ring plate 13a, and thus a gap substantially equal to the distance D is provided between the inner peripheral edge and the rotor plate 6c. When the lower choke ring plate 13b is moved to the rotor center side from the position shown in the drawing, the effective length of the notch is changed so that the upper choke ring plate 1b is changed.
The particle size can be finely adjusted by changing the particle size diameter set by the gap d of 3a and the notch length.

In the vertical crushing device having the clearance set as described above, there is a donut-shaped clearance between the rotor plate 6c and the upper choke ring plate 13a, but the clearance is less than half that of the conventional one and is small. Therefore, the long object cannot be laid down and dropped from the donut-shaped gap, and the discharge of the long object is prevented. Further, since the upper choke ring plate 13a is provided with the comb teeth edge, the string-like object may be clogged in a small circular hole as in the conventional case, but is easily displaced from the notched end of the comb teeth edge. Also, clogging is prevented.

The upper and lower choke ring plates 13a and 13b in the above embodiment may be stacked upside down. Further, in this embodiment, the movable choke ring 1
3 and the support member 14 have the same thickness, and are set so that a slight gap is not formed between the movable choke ring 13 and the lower end flange 11 or the upper end flange 12 when tightened and fixed by bolts and nuts. The member 14 may be replaced with a thick supporting member, and the thickness of the movable choke ring 13 may be made thinner than this thick supporting member by several mm.

In this case, it is not necessary to loosen the bolts / nuts 15 of the thick support member 14 in order to adjust the position of the movable choke ring 13 in the radial direction. This is because it is not necessary to lift the cylindrical shell 1. However, since the thickness of the movable choke ring 13 is slightly smaller than that of the thick support member 14, a gap due to the dimensional difference is generated. Therefore, when fixing the movable choke ring 13, the movable choke ring 13 is attracted and fixed toward the lower end flange 11, and a gap formed between the lower surface of the movable choke ring 13 and the upper end flange 12 is attached to the upper end flange 12 side. It is recommended to close it with an elastic sealing member such as rubber.

[0035]

As described above in detail, in the crusher particle size adjusting mechanism of the present invention, the movable choke rings are radially provided between the cylindrical shell and the lower end flange and the upper end flange of the discharge cylinder at a plurality of locations on the outer periphery of the crusher. The movable choke ring is moved by the moving means so that the gap between the movable choke ring and the crushing member can be adjusted, and a comb tooth edge having a large number of notches is formed on the inner peripheral edge of the movable choke ring. The above-mentioned gap is set to a predetermined gap not larger than the set grain size , and the movable choke ring is clamped and fixed at a predetermined position by the fixing means.
Since the two choke ring plates above and below the edge are stacked ,
With such a simple mechanism, the movable choke ring can be moved to easily and efficiently adjust the gap, and can be firmly fixed to the predetermined position by the fixing means, and the fineness of the grain size can be finely adjusted. It is possible to obtain an excellent effect that a crushed object having a particle size smaller than the set particle size can be discharged through the passage hole, a long object is not discharged, and clogging of a string-like object is prevented.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a vertical crusher equipped with a particle size adjusting mechanism according to an embodiment.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a detailed cross-sectional view of the fixing means and the moving means, FIG.
2 is a cross-sectional view taken along the line IVa-IVa in FIG. 2, (b) a cross-sectional view taken along the line IVb-IVb in FIG. 2, (c) a line IVc-in the direction shown in FIG.
Sectional view from IVc

FIG. 5 is a partially enlarged perspective view around the moving means.

[Explanation of symbols]

1 Cylindrical shell 2 discharge tubes 4 rotation axes 5 breakers 6 rotor 6a, 6b, 6c rotor plate 8 grinder 11 Bottom flange 12 Top flange 13 Movable choke ring 13a Upper choke ring plate 13b Lower choke ring plate 13k cutout 14 Support members 17, 18, 19 oblong holes 20 means of transportation

─────────────────────────────────────────────────── ─── Continued front page (72) Hiromasa Yamauchi Inventor Hiromasa 2-35, Jimmucho, Yao City Kubota Co., Ltd. Kuhoji Factory (72) Inventor Haruhiko Oyanagi 2-35 Shinbucho, Yao City Kubota Co., Ltd. Kuhoji Temple Factory ( 56) References JP-A 2000-254532 (JP, A) JP-A 11-244716 (JP, A) Actual Open 5-5- 441 41 (JP, U) Actual Open Sho-62-156348 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B02C 13/284 B02C 13/14

Claims (6)

(57) [Claims] 1. A lower end flange of a cylindrical shell for crushing an object to be crushed between a breaker hammer, a breaker liner, and a grinder provided on the outer circumference of a rotary shaft, and an upper end of a discharge tube for supporting the cylindrical shell and discharging the crushed material. A movable choke that can be moved back and forth in the radial direction in the gap between the support members by inserting support members at multiple points on the circumference of the flange between the flanges and fixing the cylindrical shell to the discharge cylinder. A plurality of rings are provided, the inner peripheral edge of the movable choke ring is formed as a comb tooth edge having a plurality of notches, and each movable choke ring is provided with a moving means for moving the choke ring in the radial direction and a movable choke ring in a predetermined manner. At the position, a fixing means for integrally fixing between the lower end flange and the upper end flange is provided, and the movable choke is provided.
Upper choke ring plate with a comb edge and arc shape
Two ring plates, a lower choke ring plate with a peripheral edge of
Of the lower choke ring plate,
Make it overlap with the notch on the comb edge of the cling plate at any position
The lower choke ring plate to the upper choke ring plate.
The rotor and the inner peripheral edge of the comb teeth are set to a predetermined gap below the set grain size, and the grain size can be finely adjusted.
A crusher particle size adjustment mechanism configured to allow 2. The crusher particle size adjusting mechanism according to claim 1, wherein the movable choke ring is formed to have the same thickness as the supporting member. 3. The thickness of the movable choke ring is formed to be slightly smaller than the thickness of the support member, and the gap due to the dimensional difference is closed by an elastic member. The crusher particle size adjusting mechanism described in. Wherein said upper movable choke ring, crusher particle size adjusting mechanism according to any of claims 1 to 3, characterized in that provided overlapping the lower choke ring plate upside down. 5. The moving means is formed by a base portion fixed to a lower end flange or an upper end flange, a screw bolt rotatably held by the base portion, and a moving piece screwed to the screw bolt. The crusher particle size adjusting mechanism according to any one of claims 1 to 4 . 6. The movable choke ring is provided with elongated holes for inserting bolts for fixing to the upper and lower end flanges, and elongated holes for attaching jack-up bolts for lifting a cylindrical shell. The crusher particle size adjusting mechanism according to any one of claims 1 to 5 .