KR101831184B1 - A Ring Roller Mill Having Screen Classifier - Google Patents

Abstract

The present invention relates to a crusher capable of sorting particles having a desirable size using a screen net provided at a lower portion of a ring after crushing the particles in the desirable size. To this end, the crusher has a supply part to consistently and repetitively supply materials to be crushed to a ring roller mill. According to the present invention, the crusher prevents net blockage on the screen net, increases efficiency in sorting and crushing, and has a chute structure enabling replacement of the screen net.

Description

A Ring Roller Mill Having Screen Classifier with Screen Screening Apparatus [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mill having a fixed ring and a plurality of rollers which rotate within the ring while performing idle motion along the inner circumference of the ring based on the center of the ring, The present invention relates to a grinder having a screen sorting device for sorting particles having a desired size among grinded particles.

There are a variety of apparatuses for crushing minerals such as limestone, cement clinker, or phosphate fertilizer. Among them, a crusher called a ring roller mill is widely used in various industrial fields. A typical ring roller mill is composed of a fixed ring 912 forming part of the outer frame 910 of the mill 900 and a ring ring 912 located at approximately the same height as the ring height inside the ring, The main crusher has a plurality of rollers 920 which are in contact with the inner circumferential surface of the ring and concentrically move and rotate simultaneously.

A rotary shaft 922 that allows the roller to rotate is extended upward from the roller and is rotatably supported by a bushing bearing 924. A long main rotary shaft 930 rotatably supported by the crusher 900 extends upward from a lower portion of the crusher 900 and is provided at the upper end of the main rotary shaft 930 with the same number of And is firmly coupled to the main arm 932 having an arm 931 (arm). Each arm 931 is coupled by a hinge 928 to a housing 926 of a bushing bearing 924 that rotatably supports the roller 920. In other words, the plurality of arms 931 support the plurality of rollers 920 described above in the form of being hung via a hinge 928. [

On the other hand, a bevel gear 935 is coupled to the lower end of the main rotating shaft 930 and rotates by engaging with a pinion gear 937 driven by a pulley 939 and a motor.

When the main rotation shaft 930 rotates, the arm 931 rotates integrally. When the arm 931 rotates, the roller 920 hanging on the arm through the rotation shaft 922 rotates together . The rotating shaft 922 and the bearing housing 926 hanging the roller 920 are connected to the end of the arm 931 by the hinge 928. As a result of the centrifugal force acting on the roller 920 by the rotational force, And is strongly pressed on the inner peripheral surface of the ring to perform the revolution of the concentric circles.

The object to be crushed is dropped from the inlet 915 formed in the outer frame 910 of the crusher 900 to the upper portion of the ring and is crushed and dropped into a plow chamber 940 located below the ring. Inside the plow room 940 is provided an inclined plow 942 rotating at the same rotational speed as the main rotating shaft 930. The degree of crushing of the crushed material crushed by the ring 912 and the roller 920 and dropped into the crushing chamber may not be sufficient. This crushed material is pumped upward by the plow 942, Lt; / RTI > Therefore, the pulverized product is repeatedly crushed between the ring and the roller, and eventually, the particle size of the pulverized product gradually becomes smaller over time.

Below the ring 912, a blowing hole 945 through which the air supplied from the blower can enter the plow room 940 is formed. Therefore, the sufficiently pulverized pulverized material is lifted up to the top of the pulverizer 900 by being blown by the wind supplied from the outside through the pouring port 945 to the plow room 940, and then, through the particle size selector 950, It is discharged to the outside and collected by a bag filter or the like.

The pulverizer of the above-mentioned type is suitable for making small and light, particulate matter having a diameter on the order of 0.05 mm to 0.2 mm, for example, because air is used to select and transport pulverized pulverized material. However, this approach requires too much of the power required to transport the particulate matter. For example, when grinding power is 100 horsepower, 200 horsepower is required to drive the blower for sorting and transportation. Particularly, the above-mentioned pulverizer can be used only for the purpose of making particles having a size enough to float by air or the like.

In addition, when the material to be ground is a common material such as rocks and minerals, it is exposed to rain. When the material to be ground by this oil is moisture, it is impossible to crush and sort by moisture adhesion It also has defects.

U.S. Patent No. 4,192,469 U.S. Patent No. 4,022,387 Japanese Patent Application Laid-Open No. 08-155321

SUMMARY OF THE INVENTION The present invention has been devised to solve the problems as described above, and it is an object of the present invention to provide a method of manufacturing a pelletized product having a particle size to such an extent as to be scattered by a blowing method, And it is an object of the present invention to provide a structure of a ring roller mill capable of producing and sorting even a large particle of a crushed material by adjusting the distance between the ring and the roller.

It is another object of the present invention to provide a pulverizer capable of efficiently producing particulate matter of various sizes by eliminating the limitation of particle size that can be broken by a ring roller mill.

It is another object of the present invention to provide a ring roller mill structure capable of simplifying the sorting and conveying of crushed particles and drastically reducing the power required therefor.

Another object of the present invention is to provide a ring roller mill capable of effectively crushing and sorting the crushed material even when the water content of the crushed raw material is too high to be tacky.

The present invention also relates to a ring roller mill in which a screen net is applied to selectively deliver particles through a mesh capable of passing only particles of a desired size and minimizes the structure in which abrasion can occur, It is an object of the present invention to provide a ring roller mill capable of continuously promoting fracture by continuously supplying particles not crushed to a particle diameter between a ring and a roller.

It is another object of the present invention to provide a ring roller mill structure in which screen nets can be easily replaced.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a ring roller mill in which a screen capable of ejecting particles having an appropriate size among the particulate matter crushed by the ring and the roller is provided at the lower part of the ring and the roller.

The shape and type of the screen and the size of the mesh can be tailored to the size of the material to be crushed or the particle to be produced.

The installation position of the screen is not limited to the perimeter of the plow room at the bottom of the ring and roller, but if necessary, a plow room may be omitted and a flat panel screen may be installed directly below the ring and roller.

Screening of the screen is accomplished by agitation of the plow or rollers, thereby preventing clogging of the mesh.

If the raw material to be crushed contains too much water and has a tackiness, water is supplied together with the raw material so that the crushed material is crushed by wetting. Thus, clogging of the network is prevented by the relaxation action and stirring action of the water.

The installation area of the screen can be all or part of the circumference of the plow room depending on the screening ability such as the size of the mesh. In the case of the wet crush screening, the screen area required for screening is smaller than that of the dry screen.

The present invention also provides a ring roller mill capable of adjusting a distance between a ring inner circumferential surface and a roller outer circumferential surface by providing a stopper that limits the distance that the rollers move toward the inner circumferential surface of the ring by the centrifugal force. The distance between the ring and the roller can be adjusted to the particle size of the particulate matter to be produced. Restricting the movement distance of the ring with the stopper does not cause contact between the ring and the roller.

Accordingly, the present invention provides a method of manufacturing a semiconductor device, comprising: a frame (3) for receiving a crushed material; A ring 2 fixed along the periphery of the frame 3; A main shaft 51 extending in the vertical direction from the center of the frame 3 and rotatably installed, the main shaft 51 being rotated from the outside with power; Is housed in the frame (3) and faces the inner circumferential surface of the ring (2), is rotated along the circumference of the ring while being pressed in a direction away from the main shaft by receiving centrifugal force as the main shaft rotates, A roller 68 for crushing the object to be crushed; A screen net 712 located below the face where the ring and the roller meet, and a screen net 712 provided below the frame; And a supplying part for repeatedly supplying again the object to be crushed, which is accumulated in the lower part of the frame, to the side where the ring and the roller face each other.

A plow room 7 is installed in the lower part of the ring and a crushed material accumulated in the lower part of the frame is accumulated in the plow room 7 and the screen net 712 is connected to at least one of the peripheral walls 71 of the plow room The main shaft is provided with a plow arm (592) extending in a direction crossing the longitudinal direction of the main shaft. The main shaft is rotatably received by the rotational force of the main shaft, A plow 591 provided at an end of the plow arm 592 is pivoted at high speed in the plow room 7 and the surface of the plow which is crushed by the ring and the roller faces the roller and the roller, It is possible to prevent the clogging of the mesh of the screen net 712 due to repetition of supply of the main net wall 712 again in a short cycle.

Wherein a plate (713) is provided below the face of the ring and the roller facing the roller located below the frame, the roller being pivoted to crush the object to be crushed while being stirred at the bottom of the frame, And the screen nets (712) are provided on a portion located below the surface facing the rollers to sort the crushed materials crushed by the rollers. The supply portion is a plow arm and a plow, and the main shaft The plow arm is rotated by receiving the rotational force of the main shaft rotating at a high speed and the plow arm is rotated at the end of the plow arm 592, And a plow (591) provided at a height substantially equal to the height of the surface facing the roller, wherein the plow is pivoted at high speed, To short repetition period to re-supplied to the shredded debris blood side and the screen mesh 712, which faces the ring and the roller being is possible to prevent the mesh size of the screen mesh 712 is blocked.

Wherein the screen netting assembly is installed at a lower portion of a surface of the frame facing the roller, the lower portion of the frame being located below the surface facing the ring and the roller, And the supply unit may be a water jet (82) installed at a lower portion of the screen net and spraying water upward toward the screen net.

The water jet can rotate in conjunction with the rotation of the roller.

The water jet can rotate such that the water jet position of the water jet is positioned at an advance angle with respect to the roller in the rotational direction of the roller rotated by the main shaft.

The water jet may extend in a direction intersecting the longitudinal direction of the main shaft and may be installed on the main shaft and may be rotated by receiving the rotational force of the main shaft.

The water jet may be installed on the main shaft such that the water jet position of the water jet is positioned at an advanced angle with respect to the roller in the rotational direction of the roller rotated by the main shaft.

The water jet includes: a water jet body 812 having an insertion hole 825 formed on a lower surface thereof and having an upper surface fixed to the main shaft; and a water jetting body 812 extending in a radial direction from the water jet body, And a water jet wing 822 provided with a nozzle for spraying water.

A journaling tube 84 for supplying water from the outside to the hollow portion of the water jetting body is inserted into the insertion hole 825. Between the insertion hole 825 and the journal tube 84, A water seal 824 may be interposed to prevent rotation of the water jet 82 against water and to prevent leakage of water.

A water jet shaft 511 that connects the water jet and the main shaft passes through the center of the screen net assembly, and a shaft protective pipe 714, which is disposed concentrically with the water jet shaft and surrounds the water jet shaft, And the water jet shaft may be provided with a protective cover flange 512 protruding outward from the outer diameter portion of the water jet shaft so as to cover a gap between the shaft protective tube and the water jet shaft.

A chute 8 for receiving the selected waterjet and passing through the screen net 712 and accommodating the waterjet 82 is provided in the lower portion of the frame 3, 814, respectively.

The chute 8 can be integrally fixed with a pipe 86 for supplying water to the water jet 82.

An end of the pipe tube 86 provided inside the chute may be detachably connected to the water jet via a flexible tube 85.

The end of the pipe tube 86 provided outside the chute may be detachably connected to the pipe tube 86 through a supply pipe 88 and a second flexible pipe 87 for supplying water to the pipe tube 86.

A fastener for fixing the screen net assembly to the frame can be fastened at a position accessible from the outside of the frame 3 in a state where the chute is lowered.

At least a part of the plurality of fasteners for fixing the screen net assembly to the frame may be fastened at a position accessible from the outside of the frame 3 in a state where the chute is raised.

The chute may be provided with a support 811 for supporting the screen net assembly at a lower portion thereof.

The present invention also relates to a frame (3) for receiving a crushed material; A ring 2 fixed along the periphery of the frame 3; A main shaft 51 extending in the vertical direction from the center of the frame 3 and rotatably installed, the main shaft 51 being rotated from the outside with power; Is housed in the frame (3) and faces the inner circumferential surface of the ring (2), is rotated along the circumference of the ring while being pressed in a direction away from the main shaft by receiving centrifugal force as the main shaft rotates, A roller 68 for crushing the object to be crushed; A screen net 712 located below the face where the ring and the roller meet, and a screen net 712 provided below the frame; A chute 8 provided below the frame 3 for transporting the selected crushed material through the screen net 712 and vertically conveyed by the cylinder 814; A fastener 7151 releasably fastening a screen net assembly including the screen net 712 to a lower portion of the frame and fastened at a position accessible from the outside of the frame 3 in a state where the chute is lowered; And a support (811) provided at the chute and supporting the screen net assembly at a lower portion thereof. At least a part of a plurality of fasteners for fixing the screen net assembly to the frame, (3) is fastened at a position accessible from the outside.

The main arm (58) is provided with a stopper that restricts displacement of the roller assembly in the outward direction, and adjusts the limited displacement to adjust the distance between the ring and the surface facing the roller, A gap adjusting bolt 655 extending in a direction parallel to the direction in which the centrifugal force acts and a relative position adjustable in a direction parallel to the direction in which the centrifugal force acts due to the rotation of the gap adjusting bolt, And one of the gap adjusting bolts or the gap adjusting nut may be fixed to the main arm and the other of the gap adjusting bolts or the gap adjusting nut may face the roller assembly to limit the displacement of the roller assembly.

Further, the present invention is a method for crushing a crushed material using the ring roller mill, characterized in that crushed material is crushed in a wet manner by feeding the crushed material and water together in the frame (3) .

Further, according to the present invention, there is provided a method for replacing the screen net 712 of the ring roller mill, comprising the steps of stopping operation of the ring roller mill, lowering the chute by the cylinder, A first step of separating a fastener of the screen net assembly fastened to the first position; After the first step, after the chute is lifted by the cylinder, the fastener of the screen net assembly fastened at a position accessible from the outside of the frame 3 is separated in a state in which the chute is raised, To be supported on the cover; A third step of lowering the chute with the cylinder and the screen net assembly supported on the chute together; And a fourth step of replacing the screen network with the screen network.

The ring roller mill may further include a water jet (82) connected to the main shaft and installed at a lower portion of the screen net to spray water upward toward the screen net. In the first step, A process of separating from the shaft can be further carried out.

The ring roller mill according to the present invention has the following effects.

First, there is no restriction on the size of the particles that can be broken by the ring roller mill, so that it is possible to effectively produce particulate matter of various sizes.

Second, raw materials that contain too much water can be effectively broken down. This is particularly useful when producing sand from moisture-containing raw materials such as limestone or Masato, which have no barrier to the large yard.

Third, the operation of the machine is quiet and its life is long.

Fourth, the power cost required for sorting and transporting pulverized products is dramatically reduced.

Fifth, maintenance can be done easily without using large crane equipment for high-load equipment.

Sixth, it is possible to replace the plow which is a lot of abrasion due to the crushed material by waterjet, thereby preventing the clogging of the network and effectively supplying the crushed material to the ring and the roller portion.

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

1 is a front sectional view showing an embodiment of the present invention,
FIG. 2 is a cross-sectional view taken along line AA in FIG. 1,
FIG. 3 is a cross-sectional view illustrating a cross-section taken along the BB plane of FIG. 1,
4 is a front sectional view showing another embodiment of the present invention,
FIG. 5 is a plan view showing the screen network of FIG. 4,
6 is a front sectional view showing still another embodiment of the present invention,
7 is a cross-sectional view taken along the line CC of Fig. 6,
8 is a front sectional view showing still another embodiment of the present invention,
9 is a plan view, front view and bottom view of the water jetting portion of Fig. 8,
Fig. 10 is a plan view showing the positions of the rollers and the water jets relative to the screen net of the ring roller mill according to Fig. 8,
Figs. 11 to 17 are front sectional views sequentially showing the screen netting process of the ring roller mill of Fig. 8, and
18 is a front sectional view showing a conventional ring roller mill.

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

It is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to inform.

[First Embodiment]

Fig. 1 is a front sectional view showing one embodiment of the present invention, Fig. 2 is a plan sectional view taken along line A-A in Fig. 1, and Fig. 3 is a bottom sectional view taken along a line B-B in Fig.

1 to 3, the ring roller mill 1 according to the present invention has a substantially cylindrical shape. The ring 2, which is a structure for crushing the object to be crushed, is fixedly arranged along the outer periphery of the ring roller mill 1. In Fig. 1, the ring 2 is located approximately at the middle of the height of the ring roller mill 1. The inner peripheral surface of the ring 2 is formed so as to protrude toward the inner space of the ring roller mill 1. The ring 2 includes an upper flange 23, a lower flange 24 and an inner peripheral wall 25 connecting the inner periphery of the upper flange and the lower flange as shown, It is inclined in the form of decreasing diameter. A ring liner 21 is coupled to the inner peripheral surface of the ring 2.

On the upper part of the ring 2, the frame 3 is located. The frame 3 is divided into a cylindrical intermediate frame 31 and a cover frame 32 covering the upper part. The ring 2 is fixed to the lower portion of the frame 3 concentrically with the cylindrical frame 3. The flange formed at the lower end of the lid frame 32 and the upper flange of the ring 2 are fixed by fastening means such as bolts do.

An opening 34 is formed at one side of the intermediate frame 31 and a hopper 33 is attached thereto. The crushed material is supplied to the inside of the ring roller mill 1 through the hopper 33 and the opening 34.

The flange formed on the upper end of the intermediate frame 31 and the flange formed on the lid frame 32 are fixed by fastening means such as a bolt.

A main bearing housing 52 for rotatably supporting a main shaft 51 to be described later is rigidly attached to the center of the lid frame 32. The lid frame reinforcement rib 321 is radially formed on the upper surface of the lid frame 32 with respect to the main bearing housing 52 so that rigidity is imparted to the joint structure of the lid frame 32 and the main bearing housing 52 do. A main shaft 51 disposed vertically is disposed in the vertically formed main bearing housing 52. A rolling bearing 53 is coupled to an inner upper end and a lower end of the main bearing housing 52, 51). At the top of the upper rolling bearing is a grease seal 54 to prevent the loss of grease and a main bearing lavalin seal 55 to prevent the penetration of dust, which is also the lower part of the lower rolling bearing.

The upper end of the main shaft 51 is exposed to the upper portion of the main bearing housing 52 and the driving pulley 56 is coupled to the upper end of the exposed main shaft 51. The drive pulley 56 receives the power supplied from an unillustrated motor or the like, and transmits the rotational force to the main shaft 51 to drive the main shaft 51.

Although the main bearing housing 52 for rotatably supporting the main shaft 51 is mounted on the lid frame 32 in the embodiment of the present invention, The present invention is not limited thereto. That is, the main bearing housing 52 may be installed below the ring roller mill, or it may receive power from below. However, in the present invention, unlike the prior art, a screen net is installed at the lower part of the frame 3, and the crushed material is crushed dry or wet, and when the crushed material is crushed to a proper size, It is noteworthy that it may be simpler in construction to install the main bearing housing 52 on the top of the frame 3. [

A boss 57 is firmly coupled to the lower end of the main shaft 51 and a washer-shaped coupling plate 582 is protruded from the outer periphery of the boss 57. A main arm 58 is integrally coupled to an upper end of the coupling plate 582. That is, the boss 57 and the main arm 58 are integrally joined by the coupling plate. The rotational force of the main shaft 51 transmitted through the drive pulley 56 is transmitted to the main arm 58 integrally coupled to the boss 57. [ The boss 57 is also coupled with a plow shaft 59 that drives a plow 591 to be described later so that the power of the main shaft 51 is transmitted to the plow shaft 59 as well.

Referring to FIG. 2, the main arm 58 has a substantially rectangular plate shape, and a circular hole 583 is formed at the center thereof. The main shaft 51 penetrates through the circular hole 583 and the main bearing labyrinth seal 55 is accommodated in the space between the inner circumferential surface of the circular hole 583 and the main shaft 51. On both sides of the main arm 58, two roller assemblies 6 are pivotally supported by a hinge 61, one by one. The roller assembly 6 is disposed vertically up and down and hangs on the main arm 58 through the hinge 61. [ In the embodiment of the present invention, two roller assemblies are provided. However, this embodiment is only an embodiment in which three or more roller assemblies 6 are disposed at radially equidistant positions about the main shaft 51 Of course. Three roller assemblies may be provided at intervals of 120 degrees, or four roller assemblies may be provided at intervals of 90 degrees.

1, the roller assembly 6 includes a roller shaft 62, two upper and lower roller bearings 63, a roller bearing housing 64 for receiving the roller bearings 63, A stopper plate 65 for determining the position of the roller 68 with respect to the ring 2, a roller core 66 and a roller lining 67 and the like. The upper portion of the roller shaft 62 is accommodated in the roller bearing housing 64 and the roller bearing 63 is installed at the upper and lower ends of the roller bearing housing 64 so that the roller bearing housing 64 is rotated with respect to the roller bearing housing 64, So that the shaft 62 rotates freely. A hinge 61 is formed integrally with the roller bearing housing 64 at one side of the upper portion of the roller bearing housing 64. The rotation axis of the hinge 61 is arranged horizontally and is perpendicular to the longitudinal direction of the main shaft 51.

A substantially elliptical cavity 581 is formed at both ends in the longitudinal direction of the main arm 58. The direction of the major axis of the main arm 58 is a direction away from the center of the main arm 58, (The left-right direction in Fig. 2). This is to provide a space for the roller assembly 6 received in the hollow portion 581 to swing about the hinge 61. [ In the embodiment of the present invention, the roller bearing housing 64 is accommodated in the cavity portion 581. It is needless to say that a seal is provided outside the roller bearing 63 of the roller bearing housing 64 to prevent loss of the labyrinth seal and lubricant grease to prevent penetration of dust as in the case of the main bearing housing.

There is a risk that the object to be crushed put into the interior of the roller shaft 62 from the hopper 33 through the opening 34 may be impacted to the portion of the roller shaft 62 exposed to the lower portion of the roller bearing housing 64. To protect the roller shaft 62 from such an impact, the exposed roller shaft 62 portion is covered with a roller shaft protection pipe 68.

The lower end portion 621 of the roller shaft 62 is formed with a taper as shown in FIG. 1, and a male screw 6211 is formed at an end portion thereof. A first lock nut 6212a having a diameter smaller than that of the second lock nut 6212b is fastened to the lower end of the roller shaft 62 and is fastened to the male screw 6211 and the roller core 66 And is fixed to the roller shaft 62. The outer diameter portion of the roller core 66 is also formed with a tapered surface as shown. The inner diameter portion of the roller lining 67 fitted to the outer diameter portion of the roller core has a shape corresponding thereto. After the roller core 66 is fixed to the roller shaft 62, the roller lining 67 is inserted again from the bottom and the second lock nut 6212b is fastened to the male screw 6211 to fix the roller lining 67. It goes without saying that the thickness of the bottom portion of the roller lining 67 is equal to or greater than the thickness of the first lock nut 6212a. The outer periphery of the roller lining 67 is also tapered, which is complementary to the ring liner 21.

According to the structure of the roller bearing housing 64 and the roller shaft 62, the roller shaft 62 can be rotated relative to the roller bearing housing 64. In other words, the roller shaft 62 and the roller 68 rotate integrally.

In the present invention, the structure in which the roller shaft 62 and the roller 68 are integrally rotated is illustrated, but the present invention is not necessarily limited to this structure. That is, the structure in which the roller 68 rotates relative to the roller shaft 62 is also applicable. Specifically, the structure in which the roller 68 rotates without rotating the roller shaft 62 (see the fourth embodiment), as well as the roller shaft 62 rotates and the roller 68 rotates And the structure in which the roller shaft 62 and the roller 68 are relatively rotatable relative to each other can be applied.

1 and 3, a stopper plate bracket 651 is fastened to a portion of the roller bearing housing 64 located below the main arm 58. A stopper plate 65 is fastened to the stopper plate bracket 651, Are tightly coupled. On both sides of the stopper plate 65, a shock absorbing plate 652 and a face plate 653 are attached in order.

On the other hand, a main arm lower bracket 584 is provided on the bottom surface of the main arm 58, and a gap adjusting bolt 655 is fastened to the main arm lower bracket 584. Here, the interval adjusting bolt 655 can be screwed to the main arm lower bracket 584 and fixed firmly. The threaded portion of the gap adjusting bolt 655 is exposed toward the face plate 653, and a gap adjusting nut 654 is fastened thereto. The spacing nut 654 is threadably engaged with the spacing bolt 655 and its position can be adjusted.

The face plate 653 faces each of the gap adjusting nuts 654 provided on both sides.

The gap adjusting nut 654 freely rotates on the gap adjusting bolt 655 and can move forward and backward toward the face plate 653. The position can be precisely fixed by tightly tightening each other using the double nut 6541 . When the gap between the outer surface of the roller lining 67 and the inner peripheral surface of the ring liner 21 is determined by rotating the roller assembly 6 about the hinge 61 as the gap adjusting nut 654 is advanced and retreated, The position of the spacing nut 654 can be firmly fixed to the corresponding position by strongly tightening the double nut 6541 to the ring spacing nut 654. [ The gap between the ring liner 21 and the roller lining 67 can be adjusted by adjusting the position of the ring gap adjusting nut 654. [

The stopper plate bracket 651 and the like including the main arm lower bracket 584 are provided at the lower portion of the main arm 58. However, the stopper structure of the present invention is limited to such a position It is not. For example, such a stopper structure may be formed at a position higher than the hinge 61 (see the fourth embodiment). Of course, in such a case, the direction of the stopper plate and the gap adjusting bolt, etc., should be opposite to the above-described structure. That is, the stopper plate faces the main shaft 51, and the interval adjusting bolt can be installed on the main arm 58 closer to the main shaft than the stopper plate than the stopper plate. When the stopper structure is disposed above the main arm 58, it is possible to prevent the object to be crushed and contaminate the stopper structure. In particular, when the main arm 58 is formed in the form of a rotary plate as in the embodiment of the present invention, the stopper structure can be further prevented from being contaminated by the object to be crushed.

On the other hand, a flange formed on the upper end of the plow shaft 59 is coupled to the engaging plate 582 coupled to the main arm 58 under the above-described main arm 58 in such a manner that the plow shaft 59 is connected to the main shaft 51 ) Are rotated together. At the lower end of the vertically extending plow shaft 59 is attached a plow arm 592 which extends in the horizontal direction and extends to both sides and a plow 591 is attached to the end of the plow arm 592. The plow is attached to the plow arm 592 so as to be inclined downward from the plow arm 592. When the ring roller mill is crushed, the plow is dropped to the plow room 7, To the roller liner (67).

The plow room 7 accommodates a plow as shown and includes a circumferential wall 71 extending upwardly from a bottom end of the circular bottom wall, and a flange is formed at the upper end of the circumferential wall. The flange is fastened to the lower flange 24 of the ring 2 by a fastening means such as a bolt.

The main wall 71 of the plow room 7 is formed with at least a part of the open area or the entire area thereof is opened and the outside part of the open area is formed as shown in a part separately shown in the dotted circle of FIG. The grate 711 is attached. A screen net 712 is provided inside the window 711 so that the window 712 can be supported by the window 711 even when the screen 712 receives an outward force.

Outside the plow room 7, a chute 8 is provided separately from the plow room 7, so that the products passing through the screen net 712 are collected and discharged downward.

[Second Embodiment]

FIG. 4 is a front sectional view showing another embodiment of the present invention, and FIG. 5 is a plan view showing the screen network of FIG. In contrast to the embodiment shown in FIG. 1, in the embodiment of FIG. 4, there is no plow shaft, plow arm, plow, plow room in relation to the function of the plow (a cover 593 is provided at the lower end of the main shaft 2 And the circular plate 713 is provided directly below the ring 2. [ The chute 8 is installed below the circular plate 713. The circular plate 713 is formed with a radially open area as shown in Fig. 5, and a screen net 712 is attached to this area. At this time, the roller 68 itself can be crushed by shaking the crushed material.

[Third Embodiment]

Fig. 6 is a front sectional view showing still another embodiment of the present invention, and Fig. 7 is a sectional view taken along the line C-C of Fig. The embodiment shown in Fig. 6 differs from that of Fig. 4 in that the plow shaft 59, the plow arm 592 and the plow 591 are provided. However, since the embodiment shown in FIG. 6 has no plow room, the length of the plow shaft is relatively short as compared with FIG. 1, so that the height at which the plow arm and the plow is installed is approximately equal to the height of the ring 2. The longitudinal direction of the main arm 58 and the longitudinal direction of the plow arm 592 may be perpendicular to each other so that the rollers 68 and the plows 591 are disposed at the same height at the same time. According to this embodiment, the plow plate 591 attached to the plow shaft 59 is rotated on the screen net 712 to stir the dropped object dropped on the screen net 712. Here, the hunger plate 591 may have an inclination angle with respect to the screen net 712 and may be vertical.

The embodiment shown in Figs. 4 and 6 is particularly useful when crushing the crushed material by wet, but since there is no plow room, the height of the machine is greatly reduced.

[Operation of First to Third Embodiments]

The operation of the ring roller mill of the present invention will now be described.

Referring to FIG. 1, the object to be crushed introduced through the hopper 33 is firstly crushed between the roller liner 67 which rotates and revolves and the fixed ring liner 21, and then falls to the plow room 7. The dropped crushed material is pushed upward by the plower 591, is crushed again, and then is repeatedly dropped, while the particle size is reduced and the particle shape is shaped to have a rounded shape. The crushed particles of the appropriate size pass through the screen as the plows 591 are poured upwardly on the screen net 712 as they are poured upward, and are gathered in the chute 8 to become a product. According to the embodiment shown in Fig. 1, since the screen net 712 is arranged vertically, the plow that is pivoted by the plow 591 to be supplied to the screen net 712 is dynamically moved for a very short time The screen grating 712 is brought into contact with the screen grating 712. At this time, the grater grating smaller than the grating immediately passes through the grating, and the grater grating larger than the grating does not pass through the screen grating. In addition, since the action of supplying the crushed material to the screen net is repeated, for example, about 600 times per minute, the clogging of the net is extremely small and the crushed material is effectively screened.

4, the object to be crushed through the hopper 33 is crushed between the roller liner 67 that rotates and revolves and the fixed ring liner 21, and is placed on the circular plate 713. The object to be crushed, which is placed on the circular plate 713, is agitated by the rotating roller 68 and then shredded between the ring 2 and the roller 68. Thus, the particle size is reduced and the particle shape is treated to be rounded. The particles crushed to an appropriate size are agitated by the roller 68 and pass through the net 712 formed in the circular plate 713 and are gathered in the chute 8 to become a product.

On the other hand, referring to FIG. 6, the object to be crushed introduced through the hopper 33 is crushed between the roller liner 67 which rotates and revolves and the fixed ring liner 21, and is placed on the circular plate 713. The crushed material lying on the circular plate 713 is agitated by the rotating plow 591 and crushed again between the ring 2 and the roller 68 (of course stirring can also be caused by the roller). Thus, the particle size is reduced and the particle shape is treated to be rounded. The particles crushed to an appropriate size are agitated by the roller 68 and pass through the net 712 formed in the circular plate 713 and are gathered in the chute 8 to become a product.

The ring roller mill described above can also be operated with wetness. In other words, when the crushed material is put into the hopper 33 and the water is simultaneously injected, the particles that are crushed by the water are relaxed and agitated, thereby preventing clogging of the crushed material when the crushed material is damp or wet. And crushing can be carried out.

The ring roller mills of the present embodiments can easily crush and sort particles having a particle size that is difficult to handle, such as powder having a particle size of 0.2 mm or more, or sand having a particle size of about 3 mm, Unlike the prior art described above in transporting and sorting, a lot of power and facilities are not required. In addition, even if the material to be crushed contains a large amount of water due to the naked eye in a natural state, crushing and sorting are carried out by wet crushing, in which water is injected and crushed, so that clogging does not occur.

If pulverization of ultrafine powder is required, the size of the mesh is made larger than the actual target particle size, and the pulverized material having passed through the net is pulverized by a wet sorting device, for example, wet cyclone or sedimentation sorting The pulverization can be carried out by selecting a suitable particle size through the apparatus and recycling the large particles to the mill again.

[Fourth Embodiment]

Fig. 8 is a front sectional view showing another embodiment of the present invention, Fig. 9 is a plan view, front view and bottom view of the water jet portion of Fig. 8, and Fig. 10 is a cross- Fig.

The ring 2 of the ring roller mill 1 according to the fourth embodiment of the present invention, the frame 3, the hopper 33, the main bearing housing 55, the main shaft 51, the drive pulley 56, Since the boss 57, the main arm 58, the coupling plate 582, and the like are the same as those of the first embodiment, their description will be omitted.

A water jet shaft 511 for rotating a water jet 82 to be described later is coupled to the lower end of the main shaft 51 of the ring roller mill of the fourth embodiment, that is, the boss 57 and the engaging plate 582, 51 are transmitted to the water jet shaft 511 as well.

The main shaft 58 rotates integrally with the main shaft 51. The roller shaft 62 is supported by the hinge 61 so as to be swingable. The roller shaft 62 is disposed vertically up and down, and is suspended from the main arm 58 through a hinge 61.

The main arm 58 is provided with a cavity portion 581 so that the upper end of the roller shaft 62 can protrude above the main arm 58. The main arm upper bracket 585 is fixed at a position closer to the center of the main arm than the upper end of the main shaft 58 so that the main arm 58 rotates together with the main arm, ). ≪ / RTI >

A welding nut 654 is welded to the bolt receiving hole 654 of the main arm upper bracket 585 and an interval adjusting bolt 655 capable of protruding and retracting toward the side of the upper end of the roller shaft 62 is installed When the gap adjusting bolt is rotated, the gap adjusting bolt 655 is extended and retracted, and the distance to the side surface of the roller shaft 62 is adjusted. When the tightening nut 6551 is tightened toward the main arm upper bracket 585 after the adjustment is completed, the gap adjusting bolt 655 is held in a firm position relative to the welding nut 6542.

When the gap adjusting bolt 655 extends farther from the central axis of the main shaft 51, the distance between the ring and the roller becomes wider, so that the size of the crushed particles of the crushed object can be set to a large value.

In the fourth embodiment, unlike the first embodiment, the hinge 61 is provided below the main arm 58, and the stopper structure (main arm upper bracket) is provided on the upper portion of the main arm. According to this structure, since the centrifugal force received by the roller shaft 62 by the main shaft rotating at high speed becomes very large, the instability of the behavior of the roller shaft, which may occur when the stopper acts on the roller shaft 62, .

According to the structure of the fourth embodiment, the roller shaft 62 does not rotate but rotates only the roller 68 provided on the lower end portion 621 thereof. A roller bearing (63) is provided at the lower end of the roller shaft, and a roller core (66) is provided at the outer diameter portion. In other words, the roller core 66 is rotatably installed with respect to the roller shaft. The roller core 66 has a truncated cone-shaped outer circumferential surface whose diameter gradually decreases as it goes downward. On the outer circumferential surface, the roller lining 67 is inserted upwardly from the bottom and the bolts 6211 are fastened and fixed to each other. Of course, the inner peripheral surface of the roller lining 67 corresponds to the outer diameter portion of the roller core 66. [ The outer periphery of the roller lining 67 is also tapered, which is complementary to the ring liner 21.

A flange formed on the upper end of the water jet shaft 511 is coupled to the coupling plate 582 coupled to the main shaft 58 under the main arm 58 in such a manner that the water jet shaft 511 is connected to the main shaft 51 ) Are rotated together. The water jet shaft 511 has its hollow hollow pipe shape reduced in weight, and the water jet 82 is coupled to the lower end of the vertically extending water jet shaft 511. At the lower end of the water jet shaft 511, a fastening structure for fastening with the water jet 82 is provided.

Referring to Fig. 9, the water jet 82 has a pair of water jet wings 822 extending outward in the horizontal direction on both sides of the water jet body 821 having a hollow rectangular parallelepiped enclosure structure. The water jet wing 822 is in the form of a hollow pipe and communicates with the hollow portion of the water jet body 821.

A center projection 826 is provided upwardly in the center of the upper surface of the water jet body 821 and a radially uniform bolt hole 828 is provided around the center projection. FIG. 9 shows an example in which six bolt holes are arranged at intervals of 60 degrees.

The water jet wing 822 is integrally provided on the two side surfaces of the four sides of the water jet body 821 facing each other, and the inside of the water jet wing 822 communicates with each other. At the upper end of the outer side of the water jet wing 822, a plurality of nozzle holes 823 are formed upward as nozzles through which water is sprayed. The nozzle hole 823 may be formed in a vertical direction or may have a slight inclination angle with respect to the vertical direction, and may be determined in consideration of the rotation speed of the water jet and the positional relationship between the water jet and the roller. The area where the nozzle hole 823 is formed is an area facing the area where the screen net 712 is to be described later when the water jet rotates and the water injected upward in the nozzle hole 823 hits the screen net 712 So that it rises to its upper part.

A circular insertion hole 825 is formed in the center of the lower surface of the water jet body 821. A journal tube 84 to be described later is inserted into the insertion hole 825. A water seal fixing portion 8241 is provided inside the insertion hole 825 for installing a water seal 824 for preventing water from leaking out between the journal tube 84 and the insertion hole 825 do.

The water jet 82 is fixed to the lower end of the water jet shaft 511. The center projection is inserted into the center of the lower end of the water jet shaft 511 in correspondence with the shape of the center projection 826 of the water jet 82 described above And a nut portion 514 having a hole shape is provided around the center hole 513 at a position corresponding to the bolt hole 828 described above. Therefore, when the bolt 827 is fastened in the center hole 513 with the center projection aligned and the bolt hole 828 and the nut part 514 are matched with each other, the water jet 82 is guided by the water jet shaft 511, It can be fixed firmly to the lower part of the case without eccentricity.

A screen net assembly is installed between the water jet 82 and the roller 68.

The screen net assembly has a circular plate 713 having a circular hole at the center so that the water jet shaft 511 can pass through. At the outer end of the circular plate 713, a plurality of vertically flat plate-like gills 711 are integrally formed radially, and a plurality of vertical flat plate-shaped end portions are provided with vertical annular peripheral walls 71. Also, a detachable flange 715 of a shape extending outward is provided at the lower end of the peripheral wall 71. The attaching / detaching flange 715 is fixed to the bottom surface of the ring 2 with a fastening bolt 7151. An annular screen net 712 of a flat shape is fixed to the upper part of the barrel 711 as a space between the outer edge of the circular plate 713 and the main wall 71.

In other words, the screen net assembly is held in the fixed state by the attachment / detachment bolts 7151 to the ring 2. The attachment / detachment flange 715 is provided with a step in the middle, and the stepped portion is aligned with the inner periphery of the ring 2 so as to be centered. There is some space between the screen net 712 and the lower end of the roller 68 with the screen net assembly secured to the ring.

Since the screen mesh assembly is fixed with the ring and the water jet shafts 511 are configured to rotate, there is a slight gap therebetween, and randomly bouncing particles inside the ring roller mill move along the inner periphery of the circular plate 713 There is a fear that the water is jetted out to the outside through the space between the outer periphery of the water jet shaft 511. A shaft protection tube 714 is provided on the inner edge of the circular plate 713 to cover the gap with the water jet shaft 511.

The shaft protection pipe 714 is disposed concentrically with the water jet shaft 511 and has a larger diameter than the water jet shaft 511 and is spaced apart from the water jet shaft 511. A lower fixing flange 7141 extending radially outwardly is provided at the lower end of the shaft protective pipe 714 and is integrally fixed to the plate 713. An upper inward flange 7131 extending inward in the radial direction is provided at an upper end of the side protective pipe 713, (7142) extends to a position very close to the waterjet shaft (511). Since the upper inward flange 7142 has a fixed structure, it does not directly contact the water jet shaft 511.

And a protective cover flange 512 extends outward from the water jet shaft 511 at a position adjacent to the upper surface of the upper inward flange 7142. [ The outer end of the protective cover flange 512 is formed as a downwardly curved shape covering a part of the upper end of the axial storage 714. The protective cover flange 512 rotates together with the waterjet shaft 511 and covers the gap between the upper inward flange 7142 and the waterjet shaft 511 so that it rotates relative to each other, It prevents the crushed material inside the mill from escaping to the outside.

A chute 8 in the form of a funnel is provided below the ring 2. The chute is pressed upward by a hydraulic or pneumatic force through a cylinder 814 fixed to a chassis or a bed (not shown) of the ring roller mill and fixed to the bottom surface of the ring 2.

A close flange 813 hinged to the end of the piston rod 815 of the cylinder 814 is extended outward at the upper end of the chute 8 and passes through the screen net 712 at the center of the lower end, And is discharged to the outside after being guided along the inclined surface of the chute 8 by gravity.

An inner cover 811 having a short end shape is provided near the upper end of the chute. The diameter of the inner cover 811 is smaller than the outer diameter of the attaching / detaching flange 715 of the screen net assembly and larger than the inner diameter of the attaching / detaching flange 715. The diameter of the inner cover 811 is larger than the length of the water jet 82. As will be described later, the inner cover 811 functions as a support for supporting the screen net assembly from the lower portion thereof in a state where the screen net assembly is separated from the frame. A work hole 81 for allowing the worker's hand to approach the attaching / detaching bolt 7151 fastened to the lower portion of the ring 2 is formed at the chute portion between the position where the inner cover 811 is installed and the close flange 813 . That is, the inner cover 811 is a structure for blocking the object to be crushed which has fallen into the chute 8 from escaping to the outside through the operation hole 81. The work hole 81 provides a work space for the worker to be able to detach the detachment bolt 7151, which is in a temporarily fastened state, from the outside at the time of screen net replacement work, which will be described later.

Below the height at which the inner cover 811 is installed, a pipe tube 86 passing through the chute 8 is installed. The pipe tube 86 passes through the chute in a substantially horizontal direction and is fixed integrally with the chute. An inner end of the pipe tube 86 extends to the center position of the water jet 82 and a flexible tube 85 made of rubber is vertically installed on the inner end of the pipe tube 86. The upper end of the flexible tube 85 is provided with a journal tube 84 which can be inserted into the insertion hole 825 of the water jet body 821. With the journal tube 84 fitted in the insertion hole 825, the journal tube 84 is fixed and the water jet 82 is rotated. At this time, the water seal 824 between the outer diameter portion of the journal tube 84 and the insertion hole 825 prevents water from leaking through the water seal 824.

A second flexible tube 87 made of rubber is provided at the outer end of the pipe tube 86 and the other end of the second flexible pipe 97 is connected to the water pipe 88. These connections may utilize a flange (871) structure that is a conventional connection of the pipe.

The positional relationship between the roller 68 and the water jet 82 and their operation will be described with reference to Figs. 10 and 8. Fig.

10, the water jet 82 and the water jet wing 822 are fixed so as to be slightly ahead of the roller in the rotational direction, with respect to the rotation direction (see arrows) of the roller 68 and the water jet 82 rotating together with the main shaft . For example, a waterjet wing is about 10 to 40 degrees ahead of the roller. Therefore, while the water jet is supplied to the water jet 82 and the main shaft 51 is rotated, the object is supplied into the ring roller mill through the hopper 33, and the object is broken by the ring and the roller , The water jet 82 rotates and injects high-pressure water upward through the nozzle hole 823, and the sprayed water repels the crushed material placed on the screen net 712 upward. And the bounced crushed material immediately falls into contact with the roller 68, crushed between the rings 2, and back down to the screen net 712 washed by water. Of the blobs that fall on the screen screen, the blobs smaller than the mesh of the screen mesh are washed by water and the blobs are repelled and easily passed through the screen screen without netting and fall into the chute.

Therefore, according to this structure, the water jet functions as a plow for supplying the crushed material to the secondary roller side, and the screen net is washed with water to solve the clogging phenomenon, so that the crushing and sorting of the crushed material is very efficient Let it happen.

Even if the randomly blooming material in the ring roller mill splashes into the gap between the upper inward flange 7142 and the waterjet shaft 511, the protective cover flange 512 integrally provided on the waterjet shaft 511 and rotating together The object to be crushed is prevented from entering the gap and the object to be crushed is returned to the roller 68 by the centrifugal force due to the rotation of the protective cover flange 512. The crushed material returned to the roller side is crushed by the roller and the ring . That is, in the fourth embodiment, the installation height of the protective cover flange 512 is at or slightly higher than the upper end of the roller 68 (accordingly, the height of the shaft protective pipe 714 is also determined) Thereby increasing the efficiency.

Meanwhile, the screen net 712 is exchanged when it is necessary to change the mesh size or the wear progress. Figs. 11 to 17 are front sectional views sequentially showing the screen net replacement process of the ring roller mill of Fig. 8; Hereinafter, a method of replacing the screen network 712 will be described with reference to FIGS. 11 to 17. FIG.

The portion of the flange 871 of the second flexible pipe 87 is loosened and separated as shown in Fig. 11 in a state in which the operation of the equipment is stopped (rotation of the main shaft and supply of water are stopped) The piston rod 815 of the piston 814 is lowered. The chute 8 and the pipe tube 86 integrally fixed thereto, the flexible tube 85, the ring 2 fixed to the chassis of the ring roller mill (not shown) and the upper structure thereof, And the journal tube 84 are lowered together with the piston rod.

12, the worker uncovers the bolt 827 through the insertion hole 825 provided in the lower portion of the waterjet body 821 and separates the water jet 82 from the water jetting body 821. In this state,

The separated water jet 82 is held on the journal tube 84 of the lowered chute 8 as shown in Fig. For reference, ring roller mill itself is very large, so it is very difficult to separate parts by manpower, but waterjet (82) individual parts are the weight that can be absorbed by man's workforce.

In this state, the operator releases the attaching / detaching bolt 7151 fixing the attaching / detaching flange 715 of the screen net assembly to the lower portion of the ring 2 as shown in Fig. The detachable bolts 7151 are fastened at equal intervals along the circumferential direction of the attaching / detaching flange 715, and the operator leaves some of them and releases all of them. For example, only two or three of the 12 fastening bolts 7151 are left, and the rest are released.

Next, as shown in Fig. 15, the cylinder 814 is operated again to raise the piston rod 815 upward. The chute 8 fixed to the end of the piston rod 815 rises and is brought into close contact with the bottom surface of the ring 2 again.

In this state, the worker separates all the remaining attaching bolts 7151 remaining through the working hole 81 of the chute 8. The screen net assembly is then detached from the ring 2 and the mounting flange 715 of the screen net assembly is lifted onto the inner cover 811 of the chute 8.

When the piston rod 815 is further lowered, the screen net assembly from which the detachment bolt 7151 has been separated is lowered with the chute on the chute 8, more specifically, on the inner cover 811 of the chute . At this time, when the upper inward flange 7142 of the screen net assembly descends the chute to a height at which lateral flow is interfered by the water jet axis 511, in the process of replacing the screen net 712 of the screen net assembly, Even if an external force is applied to the screen net assembly, it is possible to prevent the screen net assembly from moving away from the inner cover 811 supporting the screen net assembly. Of course, if the chute is further lowered than that shown in Fig. 17, it is possible to exchange the screen netting assembly as a whole.

After the screen net 712 or the screen net assembly is completely replaced, the assembly is performed in the reverse order of the above disassembly. 17, the piston rod 815 is lifted again to bring the screen mesh assembly into close contact with the ring as shown in FIG. 16, and a plurality of attaching / detaching bolts (not shown) (7151) is fastened to the ring (2) temporarily. 14, after the piston rod 815 is lowered, the operator fully fastens all the fastening bolts 7151 to completely secure the screen net assembly to the ring as shown in FIG. 13, 12, the worker aligns the water jet 82 to the lower portion of the water jet shaft 551 and tightens the bolt 827 to move the water jet 82 to the lower end of the water jet shaft 551 as shown in FIG. . Finally, when the piston rod 814 is raised again, all the assembly of the product is completed as shown in Fig.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed exemplary embodiments. It is obvious that a transformation can be made. Although the embodiments of the present invention have been described in detail above, the effects of the present invention are not explicitly described and described, but it is needless to say that the effects that can be predicted by the configurations should also be recognized.

1: Ring roller mill
2: ring
21: ring liner
23: Upper flange
24: Lower flange
25: My circumference
3: Frame
31: intermediate frame
32: cover frame
321: Cover frame reinforcing rib
33: Hopper
34: opening
51: Main shaft
511: Waterjet shaft
512: Protective cover flange
513: Center hole
514: Nut portion
52: Main bearing housing
53: Rolling bearing
54: Greek Seal
55: Main Bearing Labyrinth Seal
56: Driving pulley
57: Boss
58: main arm
581: Cavity
582:
583: Circular hole
584: Main arm lower bracket
585: Main arm upper bracket
59: plow shaft
591: Plow
592: Plow arm
593: cover
6: Roller assembly
61: Hinge
62: roller shaft
621: Lower end
6211: Male thread
6212a, 6212b: Lock nut
63: Roller Bearings
64: Roller bearing housing
65: Stopper plate
651: Stopper plate bracket
652: Impact damping plate
653: Face plate
654: Bolt receiving hole
6542: Welding nuts
655: Spacing bolt
6551: Fastening nut
66: Roller core
67: Roller lining
68: Roller
7: plow room
71: circumference
711: Grate
712: Screen net
713: Plate (round plate)
714: Axis shield
7141: Lower fixing flange
7142: Upper inward flange
715: Removable flange
7151: Mounting bolt (fastener)
8: Suit
81: Operation hole
811: Inner cover (support)
812:
813: Contact flange
814: Cylinder
815: Piston rod
82: Waterjet
821: Waterjet body
822: Waterjet wing
823: Nozzle hole (nozzle)
824: Water seal
8241: Water seal fixture
825: Insertion hole
826: center projection
827: Bolt
828: Bolt ball
84: Journal Hall
85: Plastic pipe (rubber pipe)
86: Customs clearance
87: Second flexible pipe (rubber pipe)
871: Flange
88: Feeder
900: Crusher
910: Outer frame
912: Ring
915: Inlet
920: Rollers
922:
924: Bearing (bushing type)
926: Bearing housings
928: Hinge
930:
931: Cancer
932: main arm
935: Bevel gear
937: Pinion gear
939: Pulley
940: Plow room
942: Plows
945: Tuyere
950: Selector

Claims (21)

delete A frame (3) for receiving the crushed material;
A ring 2 fixed along the periphery of the frame 3;
A main shaft 51 extending in the vertical direction from the center of the frame 3 and rotatably installed, the main shaft 51 being rotated from the outside with power;
Is housed in the frame (3) and faces the inner circumferential surface of the ring (2), is rotated along the circumference of the ring while being pressed in a direction away from the main shaft by receiving centrifugal force as the main shaft rotates, A roller 68 for crushing the object to be crushed;
A screen net 712 located below the face where the ring and the roller meet, and a screen net 712 provided below the frame; And
A supply unit for repeatedly supplying the object to be crushed to the lower side of the frame to the side where the ring and the roller face each other;
Lt; / RTI >
A screen netting assembly is disposed at a lower portion of a surface of the frame facing the roller, the lower portion of the frame facing the roller, and at least a portion of the screen netting assembly located below the surface facing the ring and the roller, 712) are installed to sort the crushed materials crushed by the rollers,
Wherein the supply unit is a water jet (82) installed at a lower portion of the screen net and spraying water upward toward the screen net.
The method of claim 2,
And the water jet rotates in conjunction with the rotation of the roller.
The method of claim 3,
Wherein the water jet is rotated such that the water jet position of the water jet is positioned at an advance angle with respect to the roller in the rotational direction of the roller rotated by the main shaft.
The method of claim 2,
Wherein the water jet extends in a direction intersecting the longitudinal direction of the main shaft and is installed on the main shaft and rotates by receiving a rotational force of the main shaft.
The method of claim 5,
Wherein the water jet is installed on the main shaft such that the water jet position of the water jet is positioned at an advance angle with respect to the roller in the rotational direction of the roller rotated by the main shaft.
The method of claim 5,
The water jet comprises:
A water jet body 821 having an insertion hole 825 formed on a lower surface thereof and an upper surface thereof fixed to the main shaft;
And a water jet wing (822) extending in a radial direction from the water jet body in communication with the inside of the water jet body (821) and having nozzles for spraying water thereon.
The method of claim 7,
The insertion hole 825 is inserted with a journal tube 84 for supplying water to the hollow portion of the water jetting body from the outside,
Characterized in that a water seal (824) is interposed between the insertion hole (825) and the journal tube (84) to allow rotation of the water jet (82) relative to the journal tube (84) wheat.
The method of claim 5,
A water jet shaft 511 for connecting the water jet and the main shaft to the center of the screen net assembly,
A shaft protection tube 714, which is disposed concentrically with the water jet shaft and surrounds the water jet shaft, is fixed at a central portion of the screen net assembly,
Characterized in that the water jet shaft is provided with a protective cover flange (512) shaped to protrude outwardly from the outer diameter portion of the water jet shaft so as to cover a gap between the shaft protective tube and the water jet shaft.
The method of claim 2,
A chute 8 for receiving the selected water jet and passing through the screen net 712 and receiving the water jet 82 is installed at a lower portion of the frame 3,
Characterized in that said chute (8) is fed up and down by a cylinder (814).
The method of claim 10,
And a pipe (86) for supplying water to the water jet (82) is integrally fixed to the chute (8).
The method of claim 11,
And an end of the pipe tube (86) provided inside the chute is detachably connected to the water jet via a flexible pipe (85).
The method of claim 11,
Wherein an end of the pipe tube 86 provided outside the chute is detachably connected to the pipe tube 86 through a supply pipe 88 for supplying water to the pipe tube 86 and a second flexible pipe 87. [ Roller mill.
The method of claim 10,
Wherein the fastening member for fastening the screen net assembly to the frame is fastened at a position accessible from the outside of the frame in a state where the chute is lowered.
15. The method of claim 14,
Wherein at least some of the plurality of fasteners for fixing the screen net assembly to the frame are fastened at a position accessible from the outside of the frame (3) in a state where the chute is raised.
16. The method of claim 15,
Characterized in that said chute is provided with a support (811) for supporting said screen netting assembly in its lower part.
A frame (3) for receiving the crushed material;
A ring 2 fixed along the periphery of the frame 3;
A main shaft 51 extending in the vertical direction from the center of the frame 3 and rotatably installed, the main shaft 51 being rotated from the outside with power;
Is housed in the frame (3) and faces the inner circumferential surface of the ring (2), is rotated along the circumference of the ring while being pressed in a direction away from the main shaft by receiving centrifugal force as the main shaft rotates, A roller 68 for crushing the object to be crushed;
A screen net 712 located below the face where the ring and the roller meet, and a screen net 712 provided below the frame;
A chute 8 provided below the frame 3 for transporting the selected crushed material through the screen net 712 and vertically conveyed by the cylinder 814;
A fastener 7151 releasably fastening a screen net assembly including the screen net 712 to a lower portion of the frame and fastened at a position accessible from the outside of the frame 3 in a state where the chute is lowered; And
And a support (811) provided on the chute and supporting the screen net assembly from below,
Wherein at least some of the plurality of fasteners for fixing the screen net assembly to the frame are fastened at a position accessible from the outside of the frame (3) in a state where the chute is raised.
The method according to any one of claims 2 to 17,
The main arm (58) extending outwardly in the radial direction from the main shaft restricts displacement of the roller assembly provided in the main arm in the outward direction, wherein the limited displacement is adjusted so that the ring and the roller face each other A stopper for adjusting the distance of the stopper,
The stopper
An interval adjusting bolt 655 extending in a direction parallel to the direction in which the centrifugal force acts and an interval adjusting screw 655 which is screwed to the interval adjusting bolt to adjust a relative position in a direction parallel to the direction in which the centrifugal force acts by rotation of the interval adjusting bolt Adjustment nut 654,
Wherein either the spacing bolt or the spacing nut is fixed to the main arm and the other one faces the roller assembly to limit displacement of the roller assembly.
A method of crushing a crushed material using the ring roller mill of claim 17,
Wherein the object to be crushed is pulverized in a wet manner by feeding the crushed material and water together in the frame (3).
A method for replacing the screen net (712) of the ring roller mill of claim 17,
A first step of stopping operation of the ring roller mill and separating a fastener of a screen net assembly fastened at a position inaccessible from the outside of the frame 3 in a state in which the chute is raised after the chute is lowered by the cylinder;
After the first step, after the chute is lifted by the cylinder, the fastener of the screen net assembly fastened at a position accessible from the outside of the frame 3 is separated even in the state where the chute is raised, To be supported on the cover;
A third step of lowering the chute with the cylinder and the screen net assembly supported on the chute together; And
And a fourth step of replacing the screen network with the screen network.
The method of claim 20,
The ring roller mill may further include a water jet (82) connected to the main shaft and installed at a lower portion of the screen net to spray water upward toward the screen net,
Further comprising the step of separating the water jet from the main shaft in the first step.

Images