JP2909503B2 - Rotary impact crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary impact crusher for crushing fine metal, fine slag and the like to remove foreign substances attached to the outside.

[0002]

2. Description of the Related Art As a device for crushing steel slag discharged during metal refining, for example, Japanese Utility Model Laid-Open Publication No. 61-25943 proposes a steel slag crusher 77 as shown in FIG. The steel crusher 77 has a rotating shaft 71 mounted inside a horizontal, substantially cylindrical casing 70, and left and right rotors 72, 73 having a phase difference with respect to the rotating shaft 71 are arranged in a skewer shape, The inside of the casing 70 and the rotors 72, 7
A small number of impact plates 74 are provided on the inner surface of the casing 70 so as to protrude inward, and the steel slag introduced from the side hopper 75 is supplied to the rotor 72. , 73 and the collision plate 74 to form a suitable sand, and then open the valve 76 to take it out from the discharge port 78.

[0003]

However, in the steel slag crusher 77 described in Japanese Utility Model Application Laid-Open No. 61-25943, since the casing 70 does not rotate, the steel slag remaining at the bottom of the casing 70 is sufficiently crushed. Was difficult to perform. Further, since the steel slag is supplied from the hopper 75, the steel slag is supplied to the casing 70 when the steel slag is fed too much at a time, when the feeding amount is small, or when the entrance of the hopper 75 is clogged. Since it was not constant, it was necessary to check the feeding condition from time to time.
In addition, there are problems in that the input raw material is subjected to a large amount of impact and a small amount of impact, resulting in a large variation in the number of impacts and a small number of impacts as a whole. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a rotary impact crusher capable of suppressing stagnation and uniformly crushing by a large number of impacts.

[0004]

According to the present invention, there is provided a semiconductor device comprising:
The rotary impact crusher described above has a raw material carry-in part on one side and a raw material carry-out part on the other, a plurality of repulsion plates having a gap on the inner periphery of the body plate, and an obtuse angle with respect to the inner periphery of the body plate. (Α) A drum main body mounted in an inclined state, and a plurality of striking plates are disposed on the outer periphery of the drum main body with a gap therebetween, and are uniformly mounted at an obtuse angle (β) with respect to the outer periphery. Wherein the drum main body rotates at a low speed in the same direction as the rotor, and the repulsion plate has a cross section in which the other surface forms a material transporting section. A spiral partition plate is provided which is attached to the drum main body via a F-shaped repulsion plate attaching member, and which gradually separates and lifts the raw material transporting section in the axial direction toward the raw material loading side. , On the raw material loading side of the drum body, A raw material supply section for gradually supplying the raw material to the raw material carry-in section is provided, and a dust collection hood connected to a separately installed dust collector is provided on an upper portion of the drum main body on the raw material discharge side. The low speed of the drum main body means about 10 to 30 rpm. The reason why the speed of the drum main body is set low is that the centrifugal force is increased when the drum main body is rotated at high speed, so that the raw material in the raw material transporting unit does not drop and the drum main body does not fall. It is because it rotates. Here, if the speed of the drum body is too slow, it takes time to crush. Further, the high speed of the rotor means about 500 to 4000 rpm,
The reason why the rotor is rotated at high speed is to increase the number of times that the raw material hits the striking plate and the number of times that the raw material flies by the striking plate hits the repulsion plate, thereby improving the crushing efficiency.

According to a second aspect of the present invention, there is provided a rotary impact crusher according to the first aspect, wherein the raw material discharge portion penetrates around the inside of the other closed end plate of the drum body. And a second guide vane provided at an intermediate position between the adjacent holes inside the other closed end plate so as to be inclined with respect to the radial direction. The rotary impact crusher according to claim 3 is the rotary impact crusher according to claim 1 or 2, wherein the partition plate protrudes inward from the repulsion plate. The rotary impact crusher according to claim 4 is the rotary impact crusher according to any one of claims 1 to 3, wherein the repulsion plate has an angle of 95 to 130 degrees with respect to the inner circumference of the drum body. The impact plate is attached to the outer periphery of the rotor at an angle of 115 to 155 degrees. The rotary impact crusher according to claim 5 is the rotary impact crusher according to any one of claims 1 to 4, wherein each of the striking plates and / or each of the repulsion plates receives a raw material. It is slightly inclined to the angle at which it flies. The rotary impact crusher according to claim 6,
5. The rotary impact crusher according to claim 1, wherein each of the impact plates is attached to a rotor body that gradually expands in diameter from a raw material loading side to a raw material discharging side, and each of the repulsion plates. Are juxtaposed on the same radius. The rotary impact crusher according to claim 7 is the rotary impact crusher according to any one of claims 1 to 4, wherein each of the striking plates is gradually expanded in diameter from a raw material loading side to a raw material discharging side. The respective repulsion plates are arranged side by side on a radius gradually expanding toward the material discharge side. The rotary impact crusher according to claim 8 is the same as in claims 1 to 7.
In the rotary impact crusher according to any one of the above, a screw feeder is provided in the raw material supply unit.

[0006]

In the rotary impact crusher according to any one of claims 1 to 8, the drum main body rotates at a low speed in the same direction as the rotor, and the repulsion plate has a f-shaped cross section in which the other surface forms a material transporting section. A spiral partition plate is provided which is attached to the drum body via a plate attaching member and which gradually separates and lifts the raw material transporting section in the axial direction toward the raw material loading side. When the raw material in the raw material transport section of the drum main body sent from the supply section reaches a certain height, it falls from the raw material transport section. Most of the fallen raw material hits the impact plate of the rotating rotor and is crushed. Then, the raw material crushed by the rotor bounces, a part of the raw material hits the repulsion plate of the drum body, and a part of the raw material falls into the raw material transport section. A part of the raw material crushed by the repulsion plate again hits the striking plate of the rotor and is further finely crushed, and a part of the raw material falls into the raw material transport section. This is repeated many times and gradually moved to the raw material discharge section. Dust generated during the crushing process is discharged from the dust collecting hood and collected by a separate dust collector. In particular, in the rotary impact crusher according to claim 2, the raw material discharge section is provided with a plurality of holes formed around the inside of the other closed end plate of the drum main body, and a radial direction between the holes. Since the second guide vanes are provided in an inclined state, the raw material scraped by the second guide vanes is discharged from the plurality of holes of the closed end plate by a predetermined amount. Claim 3
In the rotary impact crusher described above, since the partition plate protrudes inward from the repulsion plate, the raw material that is lifted and dropped by the raw material transport unit and falls without hitting the striking plate is formed by a spiral partition plate. It is pushed back to the raw material loading side.

According to a fourth aspect of the present invention, in the rotary impact crusher, the repulsion plate is provided between 95 degrees and 13 degrees on the inner periphery of the drum body.
Since the impact plate is attached at an angle of 0 ° and the impact plate is attached to the outer periphery of the rotor at an angle of 115 ° to 155 °, the raw material is attached to the repulsion plate or the impact plate in the vertical direction of the repulsion plate or the impact plate. Finely crushed with great power. In the rotary impact crusher according to claim 5, since the respective impact plates and / or the respective repulsion plates are slightly inclined at an angle at which the raw material repels the raw material toward the loading side, the raw material subjected to the impact crushing is It flies back to the raw material loading side. for that reason,
The movement of the raw material to the discharge side is slowed, the residence time is lengthened, and sufficient crushing is performed. Then, by adjusting the inclination angle of the impact plate and / or the repulsion plate, the residence time of the raw material can be adjusted. In the rotary impact crusher according to claim 6, each of the striking plates is attached to a rotor body gradually expanding in diameter from a raw material loading side to a raw material discharging side, and the respective repulsion plates are juxtaposed on the same radius. As a result, the peripheral speed of the rotor on the side of loading the raw material is slow and the impact force of the striking plate is weak, and the peripheral speed of the side of discharging the raw material of the rotor is fast and the impact force of the striking plate is strong. Accordingly, the relatively large raw material is crushed by the impact plate having a low peripheral speed on the raw material loading side, and the small crushed raw material is further finely crushed by the strong impact of the gradually increasing peripheral speed. In the rotary impact crusher according to claim 7,
Since the respective impact plates are attached to the rotor body which gradually expands in diameter from the material input side to the material output side, the peripheral speed of the material input side of the rotor is slow, the impact force of the impact plate is weak, and the material of the rotor is reduced. The peripheral speed on the carry-out side is high, and the impact force of the striking plate is strong. In addition, since the respective repulsion plates are juxtaposed on a radius gradually expanding toward the raw material discharge side, the peripheral speed of the raw material input side of the drum body is low, and the impact force of the repulsion plate is weak,
The peripheral speed of the drum body on the material discharge side is high, and the impact force of the repulsion plate is strong. Therefore, the relatively large raw material is crushed by the impact plate and the repulsion plate having a low peripheral speed on the raw material loading side, and the small crushed raw material is strongly impacted by the impact plate and the repulsion plate having the peripheral speed of gradually increasing, Crush further. In the rotary impact crusher according to the eighth aspect, since the raw material supply unit is provided with the screw feeder, the raw material is quantitatively sent to the drum body.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a side sectional view of a rotary impact crusher according to a first embodiment of the present invention, and FIG.
Sectional view, FIG. 3 is a side view of the rotor, FIG. 4 is an explanatory view showing a state where the upper part of the drum body is opened, FIG. 5 is a rear view of the closed end plate, and FIG. FIG. 7A, FIG. 7B, FIG.
(D) is a cross-sectional view of the drum main body and the rotor showing the state of attachment of the striking plate or the repulsion plate, respectively, and FIG. A rotary impact crusher 10 according to a first embodiment of the present invention shown in FIGS. 1 and 2 has a cylindrical drum main body 11 that rotates at a low speed, and a concentric center of the drum main body 11 inside the drum main body 11. A rotor 12 that rotates at a high speed and that is arranged with a gap in it, and a screw feeder 13 that supplies a raw material to the drum main body 11
And a dust collecting hood 15. Hereinafter, these will be described in detail.

As shown in FIGS. 1 and 2, the drum main body 11 has a plurality of repulsion plate mounting members 1 each having a F-shaped cross section on its inner periphery.
6 have an interval and the fixed surface 17 has an angle α (95 degrees to 130 degrees).
The fixed surface 17 is provided with a repulsion plate 18 having excellent wear resistance so as to be detachable.
A partition plate 19 projecting inward from the repulsion plate 18 is spirally mounted between the repulsion plates 18 so as to gradually convey the raw material to the loading side.
And a portion surrounded by the partition plate 19 is a raw material transport unit 20.
Is formed. Therefore, when the raw material lifted up in the raw material transport unit 20 falls, the raw material transport unit 2 close to the loading side falls.
Enter 0. Further, on the loading side of the drum main body 11, a raw material loading section 20a is provided. Inside the closed end plate 21 of the raw material loading section 20a, twelve first guide blades 23 are attached in an inclined manner. A hole 24 is formed between each adjacent first guide blade 23. Further, on the discharge side of the drum main body 11, a raw material discharge portion 20b is provided. Inside the closed end plate 22 of the raw material discharge portion 20b, as shown in FIG. Are mounted obliquely with respect to the radial direction, and a hole 26 is formed between each adjacent second guide blade 25. And
Rings 28 are provided on both sides of the outer periphery of the drum main body 11, and each ring 28 is mounted on a pair of drum receiving rollers 29. And the drum body 11
A sprocket 31 having a large diameter is attached to the center of the outer periphery via a support member 30, and a sprocket 32 connected to the sprocket 31 by a chain is provided on a rotating shaft 33 below the drum main body 11; Rotary axis 3
A sprocket 34 is attached to 3. And
As shown in FIG.
6 and the sprocket 34
To rotate the drum body 11 at low speed (10 to 30 r
pm, preferably about 20 rpm). As shown in FIG. 4, the drum body 11 can be vertically divided into two parts so that the repulsion plate 18 and the like can be easily replaced.

As shown in FIGS. 1 and 3, the rotor 12 is mounted on a rotating shaft 40 held on both sides by bearings 39 mounted on a gantry 38. As shown in FIG. 2, a fixed surface 42 of a striking plate mounting member 41 is attached to the outer periphery of the rotor 12 at the same interval while being inclined at an angle β (115 ° to 155 °). A striking plate 43 excellent in wearability is detachably provided. A V-pulley 44 is attached to the carry-out side of the rotary shaft 40, and FIG.
The V pulley 46 is rotated by the drive motor 45 and the V pulley 44 is rotated via the V belt 47 to rotate the rotor 12 in the same direction as the drum body 11 at high speed (about 500 to 4000 rpm, preferably 1000 rpm).
２０００2000 rpm).

The raw material supply section 14 has a screw feeder 13 for supplying raw material to a hole 24 of the drum main body 11 provided on the loading side, and a hopper 48 is provided above the screw feeder 13. The raw material supplied from the hopper 48 is supplied to the screw feeder 13
To be sent to the pool 49.

The dust collecting hood 15 is provided on the drum main body 1.
The dust generated at the time of crushing is sent from the dust collecting hood 15 to a dust collector (not shown) and collected.

A case in which coarse-grained raw material is crushed into fine-grained raw material using the rotary impact crusher 10 will be described. First, the drum body 11 is rotated clockwise at about 20 rpm and the rotor 12 is rotated at about 1000 rpm. The raw material supplied from the hopper 48 is sent to the pool 49 by the screw feeder 13, and the raw material in the pool 49 is pushed by the raw material sent later and the hole of the closed end plate 21 of the drum body 11 which is rotating. Enter from 24.
Then, the raw material scooped by the first guide blades 23 is put into the raw material transport section 20 of the drum main body 11. The raw material in the raw material transport section 20 is lifted according to the rotation speed of the drum main body 11, and falls when reaching a certain height. Most of the dropped raw material hits the striking plate 43 of the rotor 12 rotating at a high speed, and is crushed and blown off. The fluttered material hits the striking plate 43 again or hits the repulsion plate 18 of the drum main body 11 to be further crushed, and is repeatedly dropped to drop the raw material as shown in FIG.
A part of the raw material is transported into the lower raw material transport section 20 on the carry-in side, and most of the raw material enters the raw material transport section 20 closer to the lower carry-out side. In this case, since the partition plate 19 protrudes inward from the repulsion plate 18, the scattering of the raw material in the horizontal direction is controlled. Also,
The raw material that did not hit the striking plate 43 falls along the spiral partition plate 19 as shown in FIG. 8 and is returned to the raw material transporting unit 20 on the raw material loading side. The raw material is uniformly crushed while repeating such crushing many times, and is gradually sent to the discharge side. Then, the raw material that has reached the discharge side of the drum main body 11 is scooped up by the second guide blade 25, discharged through the hole 26 of the closed end plate 22, and sent to a discharge device (not shown). The dust generated at the time of crushing is discharged to the carry-out side along the spiral partition plate 19 together with the wind generated by the rotation of the rotor 12, sent to the dust collector (not shown) from the dust collecting hood 15, and collected. You. In this way, the coarse-grained raw material can be continuously crushed into uniform fine-grained raw materials. The striking plate 43 and the repulsion plate 18 that have become significantly worn are replaced so that the crushing force does not decrease.

In the above embodiment, the striking plate 43
And the repulsion plates 18 are arranged side by side on the same radius. However, as shown in FIG. 7A, the respective striking plates 43 are inclined at an angle at which the raw material repels and flies toward the loading side.
By inclining each repulsion plate 18 at an angle at which the raw material repels and flies back to the loading side as shown in (B), the crushed raw material may fly to the loading side to prolong the residence time. The residence time can be adjusted by adjusting the inclination angle. Further, as shown in FIG. 7 (C), each striking plate 43 is attached to a rotor body 50 whose diameter gradually increases from the raw material loading side to the raw material discharging side, and the respective repulsion plates 18 are juxtaposed on the same radius. Alternatively, as shown in FIG. 7 (D), each striking plate 43 is attached to a rotor main body 50 whose diameter gradually increases from the raw material loading side to the raw material discharging side, and each repulsion plate 18 gradually moves toward the raw material discharging side. By juxtaposing on the expanding radius, the peripheral speed of the raw material input side and the raw material output side is changed, and the relatively large raw material is crushed by the impact plate 43 and the repulsion plate 18 having the low peripheral speed of the raw material input side, and The crushed raw material may be further crushed by a strong impact from the striking plate 43 and the repulsion plate 18 having a peripheral speed gradually increasing. The residence time of the raw material may be adjusted by adjusting the number of windings and the winding angle of the spiral partition plate.

[0015]

In the rotary impact crusher according to any one of claims 1 to 8, the drum body rotates at a low speed in the same direction as the rotor, and the repulsion plate has a f-shaped cross section in which the other surface forms a material transporting section. A spiral partition plate that is attached to the drum body via an attachment member and that gradually separates and lifts the raw material transporting section in the axial direction toward the raw material loading side; On the loading side, a raw material supply unit for gradually supplying the raw material to the raw material loading unit is provided, and on the upper part of the raw material discharging side of the drum main body, a dust collection hood connected to a separately installed dust collector is provided. Therefore, foreign substances adhering around the raw material can be efficiently removed. If the raw material is a soft material such as aluminum, it can be rounded. In particular, in the rotary impact crusher according to claim 2, the raw material discharge section includes a plurality of holes formed around the inside of the other closed end plate of the drum main body,
Since the second guide vanes are provided in the middle of the hole so as to be inclined with respect to the radial direction, the crushed raw material can be taken out from the hole by a fixed amount.

According to a third aspect of the present invention, in the rotary impact crusher, the partition plate protrudes inward from the repulsion plate.
The impacted raw material falls to the raw material transfer section near the lower raw material discharge side and proceeds to the raw material discharge side, and the raw material falling without being placed on the raw material transfer section is pushed back to the raw material transfer side by the spiral partition plate. . Therefore, crushing can be performed uniformly. In the rotary impact crusher according to claim 4, the repulsion plate is provided between 95 degrees and 13 degrees on the inner periphery of the drum body.
The impact plate is attached at an angle of 0 ° and the impact plate is attached to the outer periphery of the rotor at an angle of 115 ° to 155 °, so that the raw material can be finely crushed with a strong impact force.
In the rotary impact crusher according to claim 5, since the respective impact plates and / or the respective repulsion plates are slightly inclined at an angle at which the raw material repels the raw material toward the loading side, the residence time of the raw material is increased. can do. 7. The rotary impact crusher according to claim 6, wherein each of the impact plates is attached to a rotor body that gradually increases in diameter from a raw material loading side to a raw material discharging side, and the respective repulsion plates are juxtaposed on the same radius. Therefore, by changing the peripheral speed of the raw material loading side and the raw material unloading side of the rotor, a relatively large raw material is crushed by the impact plate with a low peripheral speed on the raw material loading side, and the small crushed raw material is It can be further crushed by the impact plate on the fast carry-out side. 8. The rotary impact crusher according to claim 7, wherein each of said striking plates is attached to a rotor body which gradually expands in diameter from a raw material loading side to a raw material discharging side, and each of said repulsion plates gradually expands to a raw material discharging side. Are relatively juxtaposed with each other on the radius of the raw material. It can be crushed more finely by the strong impact of the plate and the repulsion plate. Claim 8
In the rotary impact crusher described above, since the raw material supply unit is provided with the screw feeder, the raw material is quantitatively sent to the drum main body. Therefore, unlike the conventional hopper, it is not necessary to check the feed state of the raw material from the hopper.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a rotary impact crusher according to a first embodiment of the present invention.

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

FIG. 3 is a side view of a rotor.

FIG. 4 is an explanatory view showing a state where an upper part of a drum main body is opened.

FIG. 5 is a rear view of the closed end plate.

FIG. 6 is an explanatory view showing a state in which crushed raw materials enter a raw material transporting unit on the unloading side.

FIGS. 7A, 7B, 7C, and 7D are cross-sectional views of a drum main body and a rotor, respectively, showing a mounting state of a striking plate or a repulsion plate.

FIG. 8 is an explanatory diagram showing a state in which a raw material falls along a partition plate.

FIG. 9 is a front sectional view of a steel slag crusher according to a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Rotary impact crusher 11 Drum main body 12 Rotor 13 Screw feeder 14 Raw material supply part 15 Dust collecting hood 16 Repellent plate attaching member 17 Fixed surface 18 Repellent plate 19 Partition plate 20 Raw material transport part 20a Raw material carry-in part 20b Raw material discharge part 21 Closed end plate 22 Closed end plate 23 First guide blade 24 hole 25 Second guide blade 26 hole 28 Ring 29 Drum receiving roller 30 Support member 31 Sprocket 32 Sprocket 33 Rotary shaft 34 Sprocket 35 Drive motor 36 Sprocket 37 Chain 38 Mount 39 Bearing 40 Rotary shaft 41 Striking plate mounting member 42 Fixed surface 43 Striking plate 44 V pulley 45 Drive motor 46 V pulley 47 V belt 48 Hopper 49 Reservoir 50 Rotor body

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B02C 13/00-13/31

Claims (8)

(57) [Claims] 1. A raw material carry-in portion on one side and a raw material carry-out portion on the other side, a plurality of repulsion plates having a gap in the inner periphery of the body plate, and an obtuse angle (α) inclined with respect to the inner periphery of the body plate. A drum main body mounted in a state, and a gap disposed inside the drum main body with a gap, and a plurality of striking plates on an outer periphery are formed at an obtuse angle (β) with respect to the outer periphery.
A rotary impact crusher having a rotor that is inclined and evenly mounted and rotates at a high speed in the direction of mounting the impact plate, wherein the drum main body rotates at a low speed in the same direction as the rotor, and the other side of the repulsion plate is a raw material. A spiral shape which is attached to the drum main body via a repulsion plate attaching member having a F-shaped cross section forming a transporting portion, and gradually transports the raw material that separates and lifts the raw material transport portion in the axial direction to the raw material loading side. A raw material supply unit for gradually supplying raw material to the raw material loading unit is provided on the raw material loading side of the drum main body, and separately provided on an upper part of the raw material discharging side of the drum main body. A rotary impact crusher comprising a dust collector hood connected to a dust collector. 2. The raw material discharge section is provided between a plurality of holes formed to penetrate around the inside of the other closed end plate of the drum main body and the holes adjacent to the inside of the other closed end plate. 2. The rotary impact crusher according to claim 1, further comprising a second guide blade provided at an angle to the radial direction. 3. The rotary impact crusher according to claim 1, wherein the partition plate protrudes inward from the repulsion plate. 4. A repelling plate is provided on the inner periphery of the drum body.
The rotary impact crusher according to any one of claims 1 to 3, wherein the impact plate is attached at an angle of 5 to 130 degrees, and the striking plate is attached to an outer periphery of the rotor at an angle of 115 to 155 degrees. . 5. The rotary impact according to claim 1, wherein each of the impact plates and / or each of the repulsion plates is slightly inclined at an angle at which the raw material repels the raw material toward the carry-in side. Crushing machine. 6. The striking plate is attached to a rotor body whose diameter gradually increases from a raw material loading side to a raw material discharging side, and the respective repulsion plates are juxtaposed on the same radius. The rotary impact crusher according to any one of the above. 7. The respective striking plates are attached to a rotor body that gradually increases in diameter from the raw material receiving side to the raw material discharging side, and the respective repulsion plates are juxtaposed on a gradually expanding radius toward the raw material discharging side. The rotary impact crusher according to any one of claims 1 to 4, wherein: 8. The rotary impact crusher according to claim 1, wherein a screw feeder is provided in the raw material supply section.