JPH11216378A - Horizontal crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent elongated crushed matter from passing through a grate in an impact type horizontal crusher. SOLUTION: In a crusher, a material to be crushed is subjected to impact pulverization by the impact elements 4 of a rotor 3 and the crushed material is discharged through the opening part 21 of a grate 8. The ridges 16 at a position lowered from the top surface of the grate by a constant length are provided to the side surface faced with the opening part 21 of the grate 8 in the rotary direction of the rotor 3 and the shelf surfaces 10 comprising the top surfaces of the ridges 16 are formed over the total length in the axial direction of the rotor 3 of the side surface. In a reversible type, the shelf surfaces 10 are formed to both side surfaces of the opening part 21. If there are the shell surfaces 10, elongated crushed matter comes into contact with the shelf surfaces 10 to be prevented from passing through the grate 18. Therefore, it is prevented that many large non-crushed matters are mixed with a product crushed into a constant particle size or less.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to impact crushing of rock, dolomite, gypsum, quicklime, coal, bulky waste, etc.
It relates to a horizontal crusher with a great size.

[0002]

2. Description of the Related Art A horizontal crusher of this type (hammer crusher) generally has a structure as shown in FIG.
A rotating shaft 101 horizontally laid horizontally in a casing, a rotor 102 fitted to the rotating shaft 101,
And a plurality of striking elements 103 swingably mounted on the casing, a great 104 having a regular opening 105 at the bottom of the casing, and the like.

The crushed material M repelled by the striker 103 in the casing accumulates on the grate 104, is sandwiched between the grate 104 and the rotating striker 103, and is crushed while the upper surface of the opening 105. Is forced out of. At this time, the opening 105 is located on the lower surface (outer surface).
Is wider than the upper surface (inner surface).
Even if the pressing force (extrusion force) of No. 03 decreases, the crushed material M is smoothly discharged.

[0004] However, even if the opening 105 is widened, the discharge of the crushed material M is not smooth.
No. 67332, etc., as shown in FIG.
The opening 105 is widened, and an enlarged step 1 is formed on the inner surface side.
06 is further formed to further reduce the discharge resistance. The step 106 may be formed on a side surface facing the rotation direction of the striker 103 (FIG. 7A) or may be formed on the opposite side surface (FIG. 2B).

[0005] By devising such a shape of the opening 105, smooth discharge of the crushed material M is ensured, but there remains a problem that the crushed material M is discharged without being sufficiently crushed. That is, some crushed materials M such as rocks have an elongated shape. As shown in FIGS. 12 and 13, when these crushed materials M having an elongated shape reach the great 104 from above or obliquely above, they become large. Even in the case of the crushed material M, as shown by the solid line in each figure, if the cross section is within the size of the opening 105, the lower end portion fits into the opening 105.
The crushed material M is generated by the energy when it falls from above.
As indicated by the dashed line, it falls down as it is and is discharged without being crushed. For this reason, there is a problem that many uncrushed large crushed materials M are mixed in a product crushed to a certain particle size or less.

Incidentally, Japanese Patent Application Laid-Open No. 3-32755,
Japanese Utility Model Application Laid-Open No. 1-88747, Japanese Utility Model Publication No. 60-28511.
In the laid-open publication, a rotary blade is provided in a casing, and a crusher that cuts and crushes a crushed object by the rotary blade forms a step portion in a penetrating portion (opening) of a screen of the crushed object,
A technique is disclosed in which an elongated crushed object is brought into contact with the step portion to suppress the passage of the elongated crushed object through a screen.

An object of the present invention is to prevent a large number of uncrushed large crushed materials M from being mixed in a product crushed to a certain particle size or less in the above-described impact crushing type horizontal crusher. And

[0008]

In order to solve the above-mentioned problems, in the impact type horizontal crusher, as in the case of the above-mentioned cutting crush type crusher, a portion through which a crushed object passes (great opening).
Thus, a step is formed.

If there is a step, an elongated object to be crushed comes into contact with the step and the passage through the object is suppressed. Therefore, it is possible to prevent a large number of uncrushed large crushed materials from being mixed in a product crushed to a certain particle size or less.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As one embodiment of the horizontal crusher according to the present invention, a rotor is provided in a casing into which a material to be crushed is put, and a striker is swingably mounted on the outer periphery of the rotor, and its rotation is performed. Impact crushing the crushed object by a striking element, and discharging the crushed crushed object from an opening of the great around the rotor, a side surface of the opening of the great facing the rotation direction of the rotor. A ridge is provided at a position lower than the Great top surface by a certain length,
It is possible to adopt a configuration in which a shelf surface formed of the ridge top surface is formed over the entire axial length of the rotor on the side surface. In this configuration, the step is formed by a shelf surface.

Further, in a reversible type horizontal crusher which crushes by forward and reverse rotation of the rotor, the shelf surface is formed on both sides of the opening of the great plate facing each other in the direction of rotor rotation. Can be adopted.

[0012]

1 is a front sectional view showing a horizontal hammer crusher according to a preferred embodiment of the present invention. In this figure, 1 is a casing, 2 is a rotating shaft transversely mounted on the casing, 3 is a rotor externally fitted to the rotating shaft, 4 is a ring hammer type hitting element loosely fitted to the tip of the rotor, 5
Is an entrance of the crushed material M, 6 is a chute, 7 is an anvil, 8
Is great. The great 8 is composed of a number of great bars, and a plurality of great bars 1 having a leading great bar 9 and a shelf surface 10 from the entrance 5 side of the crushed material M.
1, a plurality of great bars 12 having no shelf surface 10 and a final great bar 13.

As shown in FIGS. 2 and 3, the great bar 11 having the shelf surface 10 includes a long horizontal bar 17 and the horizontal bar 17.
A plurality of protrusions 18, 1 protruding in a comb-tooth shape in a direction perpendicular to the front-rear direction.
9 and blocks 20 located at both ends of the horizontal bar 17, between the projections 18 on the side 14 of the horizontal bar 17 facing the traveling direction of the striker 4, and between the projections 18 and the block 20. A ridge 16 is provided which is lower than the top surface 15 by a certain length, and the upper surface of the ridge 16 forms the shelf surface 10. The other great bars 9, 12, and 13 have basically the same configuration as the great bar 11, but have no ridges 16,
The projection lengths 8 and 19 are appropriately changed at the use position. These great bars 9, 11, 12,
By arranging the protrusions 13 along the rotation direction of the rotor 10 with the protrusions 18 and 19 in contact with each other, the great 8 having the openings 21 regularly around the periphery is formed.

Next, the operation of this embodiment will be described.
The object to be crushed M is put into the casing 1 through the inlet 5 and is impacted by the hitting element 4 rotating at a high speed, or is hit by the hitting element 4 and collides with the great 8 to be crushed.

Although the crushed material M accumulates on the grate 8, only the relatively small crushed material M that can pass through the opening 21 of the great 8 is discharged from the opening 21, and is still insufficient. The crushed material M that has not been crushed is sandwiched between the striker 4 and the great 8 and crushed to form the opening 21.
Or it is repelled by the striker 4 again.

In this operation, the crushed material M introduced from the inlet 5 is not hit by the striker 4 but is
There is an object which goes to the opening 21 of FIG. When the crushed material M is elongated, even if the crushed material M is large, the crushed material M tends to be discharged from the opening 21 by the energy at the time of falling.

However, the one arranged below the great 8, that is, the great bar 11, forms the shelf surface 10 by providing the ridge 16 at a position lower than the top surface 15 by a certain length. Therefore, as shown in FIG. 4, even if the crushed material M has an elongated shape, the lower end of the crushed material M is caught on the shelf surface 10 and falls down as indicated by a chain line. Therefore, the crushed material M is not discharged without being hit by the striker 4. In addition, the crushed object M whose lower end is caught on the shelf surface 10 is directly hit by the striker 4, so that the crushed object M is sufficiently crushed.

As described above, the shelf surface 10 is provided with the elongated crushed material M.
Is prevented from passing through the crushed material M by being caught at the lower end thereof, and the predetermined length below the top surface 15 is appropriately set by experiments or the like so that the operation is smoothly performed.

The grating 8 can be constituted by a plurality of gratings in addition to the great bars 9. FIG. 5 shows an embodiment of the present invention. The grating 22 is composed of a curved plate portion 24 having a large number of square holes 23 and legs 25 provided on the lower surface of the curved plate portion 24. A shelf surface 29 is formed by providing a ridge 28 at a position lower than the top surface 27 of the grating 22 by a fixed length on the side surface 26 facing the direction. Note that the grating 22 may have a structure without the leg portion 25, or may have a round hole or a slit instead of the square hole 23.

Also in this embodiment, since the shelf surface 29 is provided, as shown by the chain line in FIG. Is prevented from being discharged without being hit by the striker 4, and the crushed object M whose lower end is caught on the shelf surface 29 is directly hit by the striker 4. Will be sufficiently crushed.

Further, the supply port 5 is not limited to the horizontal side, but may be an upper side or the like, and the striker 4 may be of various types such as a swing hammer type. One embodiment is shown in FIG. 6, in which the supply port 5A is located above the casing 1A,
A swinging hitter 4A is attached to a disk-shaped rotor 3A.

The crushed material M is supplied to the casing 1A from the inlet 5A.
And is hit by the swing hammer type striker 4 </ b> A and collides with the great 8. Then, there is one that is going to be discharged from the opening 21 as it is,
Since the shelf surface 10 is formed in the great bar 11,
The crushed material M is not discharged in a state where it is not sufficiently crushed, and the crushed material M whose lower end is caught on the shelf surface 10 is directly hit by the striker 4A.

Further, there is a so-called reversible type in which the rotor rotates not only in one direction but also in the forward and reverse directions. One embodiment of this is shown in FIG. 7, in which 1B is a casing, 2B is a rotating shaft that is laid on the casing and is rotatable forward and reverse, 3B is a rotor,
4B is a swing type striker, 5B is an entrance of the crushed material M provided in the upper center of the casing 1B, and 8B is a great. The great bar 8B includes a plurality of great bars 11B having a shelf surface 10B and a plurality of great bars 12B having no shelf surface. The plurality of great bars 11B having the shelf surface 10B are It is arranged below.

Great bar 11 having the above-mentioned shelf surface 10B
8B, as shown in FIG. 8A, the cross section is symmetrical, and the shelf surface 10B is extended by extending the ridge 16B to the left and right at a position lower than the top surface 15B of the great bar 11B by a certain length. Has formed. The great bar 11B is substantially the same as the great bar 11 of FIG.
And a plurality of protrusions 18B and 19B protruding in a comb-like shape in a direction perpendicular to the horizontal bar 17B, and blocks 20B located at both ends of the horizontal bar 17B. And great bar 11B
The regular openings 21B are formed by contacting each other.

Also in this embodiment, since the shelf surface 10B is formed on the great bar 11B, the crushed material M is not discharged if it is not sufficiently crushed. M will be hit by the striker 4B.

In this embodiment, the great 8
B is the grating 22C shown in FIG.
May be used. In this case, the grating 2
A shelf surface 29C is formed by providing a pair of left and right ridges 28C at a position lower than the top surface 27C of the 2C by a certain length.

It should be noted that since the great layers 8 and 8B repeatedly violently collide with the material to be crushed M, it is desirable to use a material having excellent wear resistance, for example, high manganese cast steel. As long as it has abrasion resistance, ridges 16, 16 are machined.
It is preferable that casting is performed using a mold and machining is omitted or reduced, rather than forming the B and 28. By using the mold, the same great bar 11, 1 can be repeatedly used.
1A and 11B and gratings 22 and 22C can be easily manufactured.

The ridges 16, 16B, and 28 are provided with openings 21,
Since the projecting portions 16 and 28 protrude halfway from the upper surface to the lower surface of 21B and 21C, the stepped portion 106 shown in FIG. 13 is formed, and the discharge resistance is reduced. If the reduction is not desired, for example, as shown in FIG.
The ridge 16 may be extended to the lower surface. At this time, the groove 15a is formed on the top surface 15 so that the shelf surface 1
0 can be obtained.

[0029]

According to the present invention, as described above, the crushed object is prevented from being discharged without being sufficiently hit by the striker, and the crushed object having the lower end caught on the shelf surface can be properly removed. Since it is crushed by hitting with a striker,
The effect of extremely reducing the risk of uncrushed material being mixed and improving the crushing efficiency can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic sectional side view of one embodiment.

2A is an enlarged view of a main part of FIG. 1, and FIG. 2B is a plan view of the main part.

FIG. 3 is a partial perspective view of the great of the embodiment.

FIG. 4 is an explanatory view of use of the embodiment.

5A and 5B show another embodiment, in which FIG.
(B) is the same plan view

FIG. 6 is a schematic sectional side view of another embodiment.

FIG. 7 is a schematic sectional side view of another embodiment.

8A is an enlarged view of a main part of FIG. 7, and FIG. 8B is a plan view of the main part.

FIG. 9 is a cutaway side view of a main part of another embodiment.

FIG. 10 is a cutaway side view of a main part of another embodiment.

FIG. 11 is a cutaway side view of a main part of a conventional example.

FIG. 12 is a diagram illustrating the operation of the conventional example.

FIG. 13 is a diagram illustrating the operation of another conventional example.

[Explanation of symbols]

 1, 1B Casing 2, 2B Rotary shaft 3, 3A, 3B Rotor 4, 4A, 4B Impactor 5, 5A, 5B Crushed material inlet (supply port) 8, 8B Great 10, 10B, 29, 29C Shelf 11, 11B Great bar 16, 28, 28C Ridge 18, 18B, 19, 19B Projection 21, 21B, 21C Opening 22, 22C Grating

Claims (2)

[Claims] 1. A casing 1 into which a material to be crushed M is charged.
A rotor 3, 3A, 3B is provided in B, and a striker 4, 4A, 4B is swingably attached to the outer periphery of the rotor, and the crushed object M is impact-crushed by the rotating striker, and the periphery of the rotor is impacted. Openings 21, 21B, 21 of Great 8, 8B
In the horizontal crushing machine which discharges the crushed material M from C, the protrusions of the opening 21 of the great 8 facing the side surfaces 14 and 26 facing the rotation direction of the rotor at a position lower by a certain length from the top of the great. The ridges 16, 28 are provided,
28, the shelves 10, 29 comprising the top surfaces
A horizontal crusher formed over the entire length of the rotor in the axial direction. 2. The horizontal crusher according to claim 1, wherein said rotor 3B is a reversible type in which said rotor 3B rotates forward and reverse to crush, and said shelf surfaces 10B and 29C are provided with said great 8
A horizontal crusher characterized by being formed on both sides of the opening portions 21B and 21C of B facing each other in the rotor rotation direction.