KR101003034B1 - Hammer mill - Google Patents

Abstract

PURPOSE: A pulverizer is provided to replace facility of conventional two lines with pulverizing system facility of one line. CONSTITUTION: A pulverizer comprises: a housing(110) having an inlet of a subject; a rotary rotor(120) rotated by built-in inside the housing; a plurality of rotary cutters(130) for pulverizing the subject by collision with subject; a pair of screens(140) for discharging the subject; and a binding support(150) which is placed between a pair of screens and combines each end of the screen.

Description

Crusher {HAMMER MILL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulverizer, and more particularly, to a pulverizer for finely pulverizing particles of a raw material used for feed.

In general, a grinding system is a system for crushing solid particles, which is a device for crushing solid particles by mechanical force of one of compression, shear, impact, or a combination thereof.

Among these grinding systems, a grinding system for grinding grain or hay to be used as feed includes a hopper, a feeder, a strip separator and a grinder.

The hopper is a portion into which the raw material to be imprinted, and also has a function for absorbing and mitigating the impact due to the rapid supply or blocking of raw materials during the raw material input process.

The metering feeder is to spread the raw material introduced through the hopper as wide as possible to be put into a predetermined amount into the grinder.

The iron strip separator is for separating and removing various foreign substances contained in the raw material, in particular, foreign substances made of metal in advance before being introduced into the grinder.

The crusher finely crushes the raw material introduced through the iron piece separator to have a desired particle size.

Such a mill includes a rotating shaft, a rotating cutter coupled to the rotating shaft and freely swinging the rotating shaft, and a screen having a discharge hole for discharging the pulverized raw material particles.

According to the pulverizer as described above, the raw material supplied to the pulverizer is crushed by the rotational force of the rotary cutter, and then impacted and crushed by the wall surface of the disk coupled to the rotating shaft is discharged through the discharge hole of the screen.

At this time, the raw particles not discharged through the screen are discharged through the discharge hole of the screen while being crushed by the rotary cutter again until the particles having a predetermined size.

On the other hand, if you want to change the size of the raw particles that are crushed and discharged can be made by replacing the screen formed with a different size of the discharge hole.

However, the pulverizer having the structure as described above has a problem that the pulverization efficiency is lowered because the pulverized raw material is scattered into the vacant space when the pulverized raw material by the rotary cutter is wide because the vacant space on the upper portion of the raw material is introduced.

That is, since the rotary cutter rotates at a high speed, a circle is drawn when the rotary cutter rotates. At this time, a narrow space is formed between the circle formed by the rotary cutter and the screen, and the raw material is caused by the impact on the rotary cutter and the disk wall in this space. Is finely ground and discharged through the discharge hole.

However, non-discharged raw materials are continuously pulverized by collision with the rotary cutter and the disk wall while being moved in the narrow space, and when moved to the upper side of the large empty space, the crushing range of the rotary cutter and the collision with the wall surface are deviated. There is a problem that the grinding efficiency is lowered because the grinding is no longer performed.

In addition, the rotary cutter has a rectangular shape, the edge portion is easily worn during frequent collisions with a large amount of raw material introduced into the grinder, thereby reducing the grinding action by the rotary cutter, thus causing frequent replacement of the rotary cutter. .

The present invention is to solve the above problems, to prevent the scattering of the raw material during the grinding process to the empty space of the upper side which is the raw material supply side, to the wear of the rotary cutter to grind the raw material by the collision with the supplied raw material It is an object of the present invention to provide an improved grinder which can improve the grinding efficiency by changing the weak edges so that wear does not occur easily.

The pulverizer of the present invention has a housing in which an inlet of an object to be crushed is formed, a rotary rotor embedded in the housing and rotated, and coupled to the rotary rotor to collide with the object when the rotary rotor rotates to crush the object. A plurality of rotary cutters and a pair of screens disposed adjacent to a circle formed by the rotary cutters when the rotary rotor is rotated, and having a plurality of discharge holes to discharge the pulverized object, between the pair of screens The object being crushed and moved by the rotary cutter on an inner surface of an upper portion of at least one of the upper sides of the housing and a coupling support that is coupled to each other so that the pair of screens are coupled to each other; It includes a stopper for preventing the diffusion to the upper side.

" 형상일 수 있다.Ends of the rotary cutters in contact with the object are inclined at both edges thereof.

"Shape.

The coupling support is open at an upper portion to form a space therein, and a magnetic material may be embedded to receive and accommodate a metal material contained in the object by magnetic force.

According to the pulverizer of the present invention, the pulverized object introduced into the housing is pulverized until it is separated through the screen by remaining in the collision range with the rotary cutters and the discs by the stopper during the pulverization process. According to the present invention, it is possible to produce about 30 tons of crushed product per hour, which is twice that, and can replace the existing two lines of crushing system equipment with one line of crushing system equipment.

In addition, by forming the inclined corner portion that is in contact with the crush object of the rotary cutter inclined to reduce the resistance by the crushing object to reduce the wear rate it is possible to prevent frequent replacement of the rotary cutter.

In addition, there is an advantage that can be separated from the metal material contained in the object to be crushed by installing a magnetic material on the coupling support to which the screen is coupled.

1 is a front sectional view schematically showing a grinder according to an embodiment of the present invention.
Figure 2 is a side cross-sectional view schematically showing a state that the rotary cutter is coupled to the rotary rotor of the mill of Figure 1;
3 is a front view schematically showing the rotary cutter of FIG.
4 is a front view schematically showing a portion of the coupling support of FIG.

Hereinafter, the grinder of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a front sectional view schematically showing a grinder according to an embodiment of the present invention, Figure 2 is a side cross-sectional view schematically showing a state that the rotary cutter is coupled to the rotary rotor of the mill of Figure 1, Figure 3 4 is a front view schematically showing the rotary cutter of Figure 4 is a front view schematically showing a portion of the coupling support of FIG.

1 to 4, the grinder 100 of the present invention includes a housing 110, a rotation rotor 120, a rotation cutter 130, and a screen 140. ) And a coupling support 150 and a stopper 160.

The housing 110 has a space formed therein, and an upper portion thereof is opened to allow an object to be crushed into the space therein.

A guide 170 may be coupled to an upper portion of the housing 110 to rotate left and right to close one side of the opening of the upper portion.

The guide 170 is rotated counterclockwise when the rotary rotor 120 is rotated in the clockwise direction to open the clockwise side of the opening so that the object to be crushed flows into the clockwise side.

On the contrary, when the rotary rotor 120 is rotated in the counterclockwise direction, the guide 170 is rotated in the clockwise direction so that the grinding object is introduced into the counterclockwise side.

The rotary rotor 120 is embedded in the housing 110 and rotated in a clockwise or counterclockwise direction by a motor 180 provided outside the housing 110.

The rotating rotor 120 is coupled between the rotating shaft 121, disc-shaped discs (Disc) 122 that are spaced apart from each other on the outer circumferential surface of the rotating shaft 121, and the disk (122) Disc Collar 123, which serves as a stable centripetal force of centrifugal force due to rotational force during the equal interval maintenance of the 122 and the protection and driving of the rotating shaft 121, and each disc coupled to the end of the disc 122 A hammer pin 124 for allowing the 122 to be associated with each other and a cutter collar 125 coupled to the hammer pin 124 are provided.

The rotary cutter 130 is coupled to the rotary rotor 120, that is, the hammer pin 124 to serve as a rotating ring spaced apart from each other to freely swing (rotate) during the rotation of the rotary rotor 120 The grinding object is crushed while colliding (or impacting) with the grinding object introduced into the 110.

Here, the cutter cola 125 is disposed between the plurality of rotary cutters 130 so that the rotary cutters 130 do not collide with each other.

" 형상을 가질 수 있다.The rotary cutter 130 has a rectangular shape in which a part of one side, which is a side that collides with a crushing object on a special material such as alloy steel, becomes a special welding coating 131 such as manganese coating, and the one side part is formed to be inclined at both corners.

"Can have a shape.

This is to reduce the resistance applied to the corner portion of the rotary cutter 130 to reduce the wear rate of both corners.

That is, in the conventional rotary cutter having a rectangular colliding part in the form of a rectangle, the resistance applied to both corners is large, so that the replacement of the rotary cutter occurs frequently, and the corner of the rotary cutter 130 is formed as described above. If the portion is formed, the resistance to be applied is reduced and the wear rate is smaller than in the prior art, thereby preventing frequent replacement of the rotary cutter 130.

The screen 140 is embedded in the housing 110 and surrounds the rotary rotor 120, and a plurality of discharge holes (not shown) are formed to collide with the rotary cutters 130 so as to be crushed. The crushed object pulverized by colliding with the 122 is discharged.

The screen 140 is an element to obtain the size and shape of the desired particles, which depends on the size and shape of the discharge hole formed in the screen 140.

The coupling support 150 may be disposed at a lower portion of the housing 110, and may have a shape in which an upper portion thereof is opened to accommodate a receiving space therein.

When the coupling support 150 is in the form of a rectangular box, each of the pair of screens 140 is detachably coupled to each of the left and right sides, and a rod-shaped magnetic body 151 has one side at the rear center and the other side at the front. Each may be coupled to a central portion.

The magnetic body 151 removes impurities of a metallic material from an object introduced into the housing 110 and collects the accommodating space in the coupling support 150.

That is, even if the object is supplied into the grinder 100 before the object is supplied by the iron separator (not shown) in advance of removing the metal material 100% can not be removed, by providing a magnetic body 151 in the grinder 100 The metal material may be removed again from the grinding object during the grinding process.

The stopper 160 is coupled to the upper side inner surface of the inner surface of the housing 110, it is coupled to the upper portion of at least one of the clockwise side or the counterclockwise side.

Specifically, an empty space 111 is formed at the upper portion of the housing 110, that is, the upper portion of the circle formed by the rotating cutters 130 when the rotary cutters 130 rotate at high speed. The stopper 160 is coupled to at least one of the one side and the other side wall in the area of the empty space 111.

Here, when the stopper 160 is coupled to only one wall, the position thereof may be determined according to the direction in which the rotary cutters 130 are rotated, and when the rotary cutters 130 are rotated in a clockwise direction, the stopper 160 is coupled to the upper inner wall surface of the housing 110 of the counterclockwise side, the stopper 160 is the upper inner wall surface of the housing 110 of the clockwise side when the rotary cutter 130 rotates in the counterclockwise direction Can be coupled to.

The stopper 160 may prevent scattering of the stopper 160 into a large empty space 111 on the upper portion of the housing 110, which is a side into which the object is introduced during the grinding of the object.

That is, the object supplied into the housing 110 is crushed by the collision with the rotary cutters 130 that are rotated at high speed, and finely pulverized by the collision with the disks 122 to discharge the screen 140. Ejected through the hole.

At this time, the object having a particle larger than the size of the discharge hole formed in the screen 140 is moved along the rotation direction of the rotary cutter 130 while colliding with the rotary cutters 130 and the disk 122.

The object that is moved while being crushed in the narrow space between the rotary cutters 130 and the screen 140 tends to diffuse into the large empty space 111 while approaching the upper side of the housing 110, which is the stopper. 160 will be blocked.

In addition, the stopper 160 blocks the path from the narrow space between the circle formed by the rotation of the rotary cutters 130 and the screen 140 to the large empty space 111 above the housing 110. By increasing the pressure in a narrow space between the screen 140 and the object can be pressurized to be well discharged through the discharge hole of the screen 140.

In addition, the stopper 160 prevents the object being pulverized from moving to the empty space 111 of the upper portion of the housing 110 and being mixed with the newly supplied object, thereby delaying the crushing of the newly supplied object. You can prevent it.

The grinder 100 having the structure as described above operates under no load before the object to be crushed into the housing 110, and when the object is introduced into the housing 110, the rotary cutters 130 rotate at 1,500 to 4,000 rpm. The object is crushed by the impact force, and is also impacted on the wall of the disks 122 and finely crushed.

The crushed object is separated through the screen 140, wherein the unseparated object continues to rotate with the rotary cutters 130 and the disks 122 until it reaches a predetermined particle size and is separated through the screen 140. Is crushed by impact.

At this time, the object to be continuously crushed by the stopper 160 is blocked diffusion to the upper portion of the housing 110 and continues to be crushed remaining in the collision range with the rotary cutter 130 and the disk 122. .

According to the crusher 100 having the above structure, the pulverization object introduced into the housing 110 remains in the collision range between the rotary cutters 130 and the disks 122 by the stopper 160 during the pulverization process and is screened. According to the present invention, it is possible to produce about 15 tons of crushed products per hour, which is twice as much as the conventional method of producing 15 tons of crushed products, which are pulverized by separating through 140. It is economical because it can be replaced by the grinding system equipment of the line.

In addition, the edge portion of the rotary cutter 130 in contact with the grinding object to receive a lot of resistance to be inclined to reduce the resistance by the grinding object to reduce the wear rate to prevent frequent replacement of the rotary cutter (130).

In addition, by installing the magnetic body 151 on the coupling support 150 to which the screen 140 is coupled, there is an advantage that can separate the metal material contained in the object to be crushed.

100 ... Grinder 110 ... Housing
120 ... rotary rotor 130 ... rotary cutter
140 ... screen 150 ... mating support
151 ... magnetic material 160 ... stopper
170 ... guide 180 ... motor

Claims (3)

A housing in which an inlet of an object to be crushed is formed on the upper portion;
A rotary rotor embedded in the housing and rotating;
A plurality of rotary cutters coupled to the rotary rotor to collide with the target to crush the target when the rotary rotor is rotated;
A pair of screens disposed adjacent to a circle formed by the rotary cutter when the rotary rotor is rotated, and a plurality of discharge holes are formed to discharge the pulverized object; And
A coupling support disposed between the pair of screens to couple the opposite ends to each other such that the pair of screens are coupled to each other;
A guide rotatably coupled left and right to an upper portion of the housing and closing one side of the inlet by rotation; And
And a stopper on an inner surface of an upper portion of at least one of the upper portions of the housing, the stopper being crushed by the rotary cutters to prevent the object from being diffused to the upper side. delete delete

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