KR20020007122A - Grinding attachment and grain pearling mill using it - Google Patents

Abstract

PURPOSE: To provide a grinding device equipped with a constitution capable of enhancing a grain-cleaning efficiency and restricting the rise of a processing and a running cost. CONSTITUTION: This device is the grinding device 3 which polishes an introduced grain by grinding while the introduced grain travels. The grinding device 3 is characterized in that a plurality of replaceable projected members 4 on the outer circumference surfaces of cylindrical rolls and that the projected members 4 are formed by fixing a cement carbide abrasive grain D through metal plating 4B on the surfaces of the members which have been formed in a projecting shape by machining, and are attached along the directions of the circumference and the axis on the surfaces of the above cylindrical roll.

Description

Grinding device and potting machine using it {GRINDING ATTACHMENT AND GRAIN PEARLING MILL USING IT}

TECHNICAL FIELD The present invention relates to a grinding apparatus and a potter's wheel using the same, and more particularly to a configuration of a potter's roll used for peeling grains.

One of the mills used for milling operations such as rice and barley is one having a configuration using a grinding method.

The grinding machine using the grinding method is provided with a grinding roll for cutting, and the grinding roll has a structure in which a plurality of convex grinding edges are formed by machining on the outer circumferential surface of the rotatable metal body or fine particles such as gold steel yarn. There exists a structure which sintered and made into the rotating body.

However, when machining a metal body, the processing cost is high, and when a fine particle is sintered, there existed a problem that it was difficult to obtain a uniform thing in precision.

In order to solve the above problems, for example, as disclosed in Japanese Patent Laid-Open No. 9 (1997) -173876, fine particles are formed on the surface of a roll made of metal through a metal plating layer. There is a formed configuration.

In the above structure, fine particles made of high hardness materials such as diamond, sapphire, and zirconia-based ceramics are attached to the roll surface in a scattered state through the metal plating layer to integrate the roll and the fine particles.

In this publication, one threaded member is formed on the circumferential surface so that the milled rice or the like can move in the axial direction in accordance with the rotation of the roll or the like. According to the above publication, the grain can be moved in the axial direction according to the shape of the circumferential surface, and at the same time, the inside of the pot is set by the action of a resistance plate which is located downstream of the moving direction to change the pressure applied to the grain. It is disclosed that the pressure can be raised to some extent to increase the contact pressure between the grain and the grindstone.

However, when the pressing force of the resistance plate is raised to increase the crushing efficiency of the grain by increasing the internal pressure, the grain is not dense but the state is full of grains, so-called block type. It was confirmed by experiment. Therefore, when the grain becomes full and becomes a block shape, the movement of the grain is restricted, and the grain cannot rotate and invert and the defect arises that the whole grain is not uniformly ground. In other words, the grain is rotated and inverted so that the so-called direction cannot be reversed, and the same portion (surface) always comes into contact with the grinding surface of the milling roll.

In the case of grain grinding, for example, in the case of rice, the flat part of the side is ground more flatly, and this prevents the rotation of the grain and is promoted to a flat state.

On the other hand, when it is going to prevent the promotion of a flat state by reducing the pressing force of the said resistance plate and changing the rotation speed of a milling roll, rotation of the direction which made the long axis of a grain the axis occurs. Therefore, the grain is ground in a cylindrical shape, and in the extreme case, the grain is ground in a needle shape. In order to uniformly grind the whole grain in consideration of the occurrence of the above phenomenon, it is necessary to lower the pressing density of the resistance plate so that the grain density can be reversed so that the grain touching the milling roll can be reversed. Will lower the efficiency of the coating. As mentioned above, a milling roll using a single threaded protrusion can prevent the convex form due to its shell conveying ability, thereby increasing the milling efficiency of the grain to a certain extent, but it cannot achieve the milling efficiency of the grain. There was a problem.

On the other hand, the publication discloses that the grain direction is uniform and the shape deformation can be reduced by the configuration of the coating roll. However, as described above, when the pressing force of the resistance plate is raised, the grain density in the milling chamber increases, and the grain cannot move freely. Therefore, the grains of the screw grooves connected as one are transported toward the outlet while staying in the groove portion as it is, while the surface is ground thickly.

On the other hand, in the milling chamber, the particles on the milling network side do not move toward the milling roll and move toward the outlet by the shell feed force by the shell feed screw. In the extreme case, the surface is discharged without grinding. Therefore, excessively ground particles and particles that are not ground at all may be mixed and discharged.

In the case of using the milling roll disclosed in the above publication, it is difficult to integrally mold a large-sized one in terms of machining, and it becomes difficult to repair when there is abrasion or defect of the grinding surface and replace it with a new one. As a result, machining costs and operating costs may increase. Further, by using one screw structure, as described above, it is difficult to equalize the cutting opportunities in all the grains, and it is difficult to improve the cutting efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS The figure for demonstrating the whole structure of the calibrator to which the grinding apparatus which concerns on embodiment of this invention is applied.

FIG. 2 is a front view showing the configuration of a cutting roll forming a main portion of the grinding device shown in FIG. 1; FIG.

3 is a side view of the milling roll shown in FIG. 2;

FIG. 4 is a plan view showing the constitution of the convex member used in the cutting roll shown in FIG. 2. FIG.

FIG. 5 is a side view of the convex member used in the cutting roll shown in FIG. 2. FIG.

Fig. 6 is a view showing the constitution of the convex member shown in Fig. 4, (A) is an external view, (B) is a partial cross sectional view, and (C) is a partial enlarged cross sectional view.

[Description of Symbols for Main Parts of Drawing]

1: Ferrule, 1A: Outer body, 2: Conveying screw, 3: Grinding roll forming a recess of grinding device, 4: One side of paired convex member, 4 ': The other side of paired convex member, 5: Bolt , 6: cylindrical mesh member, 7: pressure applying means.

A first object of the present invention is to provide a grinding apparatus having a configuration capable of suppressing an increase in processing and operating costs in view of the problems in the conventional grinding apparatus and a potting machine using the same.

The second object of the present invention is to provide equal milling opportunities in all grains, in other words, to allow free movement of the grains so that rotation and inversion can be easily performed, and all grains are brought into contact with the milling rolls. SUMMARY OF THE INVENTION An object of the present invention is to provide a grinding apparatus having a configuration capable of uniform and even grinding and improving the cutting efficiency of a grain and a potter using the same.

In order to achieve the above object, the invention of claim 1 is a grinding device for grinding and milling while conveying introduced grains, wherein a plurality of convex members are detachably provided on the outer circumferential surface of the cylindrical roll, and the convex members are previously machined. It is characterized in that the surface of the member formed in the convex shape is fixed by fixing metal particles very hard and fine through metal plating, and is mounted along the circumferential direction and the axial direction on the cylindrical roll surface.

In this invention, it can comprise by the convex part which has the surface which the very hard and fine particle distributes only by attaching a convex member to the surface of a cylindrical roll.

In the grinding apparatus of Claim 1, the said convex member is arrange | positioned in the form which can move the said grain in the axial direction of the said refining roll, and is provided in the circumferential surface of the said refining roll, It is characterized by the above-mentioned. Doing.

In this invention, since the convex member is arrange | positioned in the form which can move a grain in an axial direction, when grain is contacted with each convex member at the time of rotation of a rolling roll, it moves in an axial direction and does not stay in the same place. This eliminates the block state that occurs when grains stay in one location, thereby increasing the chance of grinding.

The invention according to claim 3 is characterized in that the convex member is disposed inclined in the axial direction in the circumferential direction of the cutting roll, and is provided so as to be inverted by 180 ° with respect to the longitudinal center along this inclined direction.

In the present invention, each of the convex members can be inverted with respect to the longitudinal center thereof, so that when the end portion of the side contacted with the grain for the first time according to the rotational direction of the milling roll is worn or missing, the grain is not contacted for the first time. The end of the non-contact side can be replaced by the end of the first contacting side. Thereby, the replacement | exchange timing of a convex member can be extended and what is called life can be doubled.

In the invention according to claim 4, in the state in which the convex portion in which the convex member is located and the concave portion in which the convex member is not positioned and the circumferential surface are exposed are alternately in contact with the grains on the circumferential surface of the circumferential surface when the roll is rotated. The convex members are arranged at intervals in the circumferential direction and the axial direction.

In the present invention, the convex portion in which the convex member is located and the concave portion in which the convex member is not positioned and the cutting roll circumferential surface is exposed are spaced in the circumferential direction and the axial direction so as to alternately contact the grain during rotation of the cutting roll. Since they are arranged, unlike one screw, the grains alternately face the convex and concave portions when the mill roll is rotating. As a result, the grains come into contact with each of the uneven portions, so that the grain itself is rotated and reversed. The grain direction, in other words, the direction of the surface to be ground is changed, and the whole surface of the grain can be ground. In addition, since the volume of the cutting space formed between the cutting mesh member differs from the position where the convex member and the cutting mesh member face each other and the circumferential surface of the coating roll faces the cutting mesh member, the grain changes in volume. By repeating the dense state according to this, it is easy to change the grain placed on the side of the cut net and the grain placed on the cut roll side, the direction can be changed in all directions, and the surface of the grain can be ground uniformly.

Invention of Claim 5 uses the grinding apparatus of any one of Claims 1-5, Comprising: It is arrange | positioned coaxially with the rotatable conveyance member arrange | positioned in the vicinity of the introduction part of grain, and the convex member is circled on the outer peripheral surface. A milling roll comprising a cylindrical roll mounted on a main surface, a milling network member disposed around the outer periphery of the milling roll to form a moving space of grain between the milling roll, and the conveying member in the axial direction of the milling roll. And a grain discharge part formed on the opposite side to the other side.

In the present invention, since the volume of the coating space formed between the coating network member changes alternately in the axial direction at the time of rotation of the coating roll, the grain moving in the coating chamber space can repeat the dense state. As a result, the grain direction tends to change according to the change in the dense state, and the grains located on the mesh member side and the milling roll side are alternately performed, so that the whole surface of all grains can be ground uniformly and evenly. have.

Next, embodiments of the present invention will be described with reference to the illustrated examples.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the whole structure of the calibrator provided with the grinding apparatus which concerns on the Example of this invention, In the figure, the case where it installed so that the upper part in FIG. 1 becomes the top part of the calibrator 1 is shown.

In FIG. 1, the potter's wheel 1 is provided with the outer member 1A which consists of a cylindrical member, In the lower part of the outer member 1A, the inlet opening 1B of the grain used for milling, such as rice, is formed, and the outer member A discharge port 1C is formed on the side opposite to the introduction port 1B in the longitudinal direction of 1A.

The conveyance member 1D arrange | positioned between the grain storage part connected to the exterior, and the discharge port 1E are provided in the inlet port 1B, and the discharge port 1C, respectively.

Inside the outer member 1A, the conveying screw 2 which forms the conveying member arrange | positioned in the vicinity of the inlet port 1B, and the feed roll 3 provided coaxially with the conveying screw 2 are arrange | positioned, have.

The scouring roll 3 is a member constituting the main portion of the grinding apparatus in the present embodiment, the configuration of which is shown in the drawings after FIG.

In FIG. 2, the coating roll 3 is comprised from the metal cylindrical roll, and many convex members 4 are arrange | positioned at the outer peripheral surface.

As shown in Figs. 4 and 5, the convex member 4 forms a long circle in plan view by machining the metal base material in advance, and corresponds to the radius of curvature of the outer circumferential surface of the cut roll 3 in side view. It is a block fragment formed in an arc shape.

The convex member 4 is provided with the screw hole 4A at the time of mounting | wearing to the tolling roll 3 in several places along the longitudinal direction, and can be attached or detached with respect to the tolling roll 3 by this.

On the surface of the convex member 4, as shown in Fig. 6, very hard and fine particles D such as diamond are formed in a dispersed state.

The very hard and fine particles D are fixed to the surface of the convex member 4 through the metal plating layer 4B formed on the surface of the convex member 4, as shown in Fig. 6C. As shown in FIG. 6 (B), the convex grinding surface can be formed on the surface of the coating roll 3 by being attached to the surface of the coating roll 3 via the bolts 5.

As shown in FIG. 2, although many convex member 4 is arrange | positioned on the surface of the sizing roll 3, the arrangement structure is as follows.

In Fig. 2, the convex member 4 is mounted so as to be inclined in the circumferential direction in the axial direction so that the grain can move in the axial direction during the rotation of the milling roll 3, and the inclined direction is mounted in the longitudinal direction. .

One convex member 4 is capable of inverting by 180 ° with respect to the longitudinal center, and in the case of inversion, the fastening and support for the screw holes 4A at both ends in the longitudinal direction may be released. As a result, when the end portion corresponding to the rotational direction upstream side of the cutting roll 3, which is the side where the convex member 4 comes in contact with the grain for the first time, is worn or missing, the portion where the new end comes into contact with the grain for the first time by simply inverting it by 180 °. You can do

As shown in FIG. 2, the convex member 4 attached to the surface of the sizing roll 3 has the convex part and the convex member in which the said convex member is located in the circumferential surface when the sizing roll 3 rotates. The convex members are arranged at intervals in the circumferential direction and the axial direction in a state in which the concave portions where the circumferential surface is exposed without being positioned are in contact with the grain alternately. 2 shows a state in which the convex member indicated by the reference numeral 4 and the convex member indicated by the reference numeral 4 'are deviated in the axial direction in the circumferential direction, and the longitudinal end of the convex member 4 is shown. At the position adjacent to the circumferential surface of the sizing roll 3, the circumferential surface of the sizing roll 3 also exists at the position adjacent to the longitudinal end of the convex member 4 '. When rotated, the convex part and the concave part appear alternately.

In the arrangement of the convex member 4 as described above, the convex portion and the concave portion of the milling roll 3 may alternately touch the grain when the milling roll 3 is rotated, whereby the grains alternate in direction. It will change every time it touches.

On the other hand, in the inside of the potting machine 1 in which the cut roll 3 of the said structure is arrange | positioned, the cut net member 6 comprised by the cylindrical shape which consists of concentric circles with the cut roll 3 around the outer periphery of the cut roll 3 is arrange | positioned. The moving space of grain is comprised between the milling roll 3, and is shown.

Moreover, near the discharge port 1C in the calibrator 1, the pressure provision means 7 which can move back and forth in the axial direction of the sizing roll 3 is provided.

The pressure applying means 7 attaches a tapered cone-shaped resistance member 7A to the rod of the cylinder 7B, and between the outer circumferential surface of the cut roll 3 and the cut network member 6. The grain density is set to be variously adjusted by adjusting the pressing force on the grains introduced into the pot.

Since the present embodiment has the above-described configuration, the milling roll 3 to which the convex members 4 and 4 'are mounted in advance is disposed inside the mill 1. The cutting roll 3 may have a simple cylindrical shape, and since the convex members 4 and 4 'are also pre-machined block fragments, the workability is relatively low compared with the case where the whole of the cutting roll 3 is integrally formed. It becomes favorable and is easy to obtain.

In the clarifier 1, the grains introduced from the introduction port 1B are conveyed toward the smelting roll 3 by the conveying screw 2.

Since the cutting roll 3 is provided with the convex members 4 and 4 'which are arranged and mounted in the divided state in the circumferential direction, the part which has a convex part in the circumferential direction when rotating unlike one screw (convex part) You can face the grain without the snail. Therefore, even when the concave pressure by the pressure applying means 7 is increased to increase the grain density, the dense state of the grain can be set in the convex portion and the concave portion, a rough state occurs in the concave portion, and the convex portion is precise. ) Condition occurs. Therefore, by creating the dense state of a grain, the state which becomes easy to rotate and reverse of a grain is obtained, and it becomes possible to grind without a nonuniformity on the surface of a grain.

Moreover, since the convex members 4 and 4 'are provided so that the convex part and the concave part may alternately touch the grain at the time of rotation of the rolling roll 3, the grains concentrated and sent to the concave part will be next. It can be forcibly reversed and moved in the convex part. As a result, some grains touch the convex part of the top, the other touches the back, while the other grains touch the convex part respectively, gathering so that they are extruded toward the mesh member 6 as they rotate and are forced in many directions. Then, a so-called scrambled state arises with respect to the grain. As a result, the grain is moved toward the discharge port 1C, and thus the posture can be changed in various directions, so that the entire surface is ground uniformly.

Since the convex part and the concave part appear alternately on the circumferential surface of the cutting roll 3, the grain direction conveyed from the concave part when the convex part is opposed to the convex part a plurality of times during one rotation is various directions. In this case, the grains located on the mesh member 6 side and the grains located on the milling roll 3 side can be replaced in the milling chamber between the milling network member 6. As a result, all of the grains can be brought into contact with the cutting roll 3 as a whole, and uniform and even grinding is performed.

When a part of the convex members 4 and 4 'of the retarding roll 3 is worn or missing, the new longitudinal end portion is rotated by 180 degrees with respect to the longitudinal center of the convex members 4 and 4'. It can be located in the upstream of the rotation direction of the cutting roll 3, and can be made to contact a grain for the first time. As a result, the service life can be doubled while being a single convex member, and it can be carried out without requiring any special replacement work in maintenance at the time of replacement.

According to this embodiment, since the cutting roll 3 which has a grinding surface is produced only by attaching the convex members 4 and 4 'which consist of block fragments to the circumferential surface of the coating roll 3, the convex member 4 Since the number of 4 ') can also be adjusted, it becomes possible to set the state according to the degree of refinement, such as a refinement degree. In addition, in the above embodiment, the example in which the adjuster 1 is installed in the upright state is shown, but it is also possible to install it horizontally.

As is apparent from the above examples, according to the invention described in claim 1, the convex portion having a surface where very hard and fine particles are distributed can be configured only by attaching the convex member to the surface of the cylindrical roll. Thereby, even when using the member which requires machining, it becomes comparatively simple process and it becomes possible to aim at cost reduction.

According to invention of Claim 2, when grain contacts a convex member at the time of rotation of a refining roll, it moves to an axial direction and does not stay in the same location. Thereby, the block state which arises when a grain stays in one place can be eliminated, and a grinding opportunity can be increased, and it is possible to improve a cutting efficiency.

According to the invention according to claim 3, since each convex member can be inverted based on the longitudinal center thereof, when the end portion of the side contacted with the grain for the first time by the rotational direction of the cutting roll is worn or missing, the grain The end of the side which is not first contacted with can be replaced by the end of the side which is newly in contact with the grain. Thereby, the replacement | exchange timing of a convex member can be extended and what is called life can be doubled.

According to the invention of claim 4, unlike one screw, the grains can alternately face the convex portion and the concave portion when the milling roll is rotating, thereby making it easy to rotate and reverse the grains. As a result, the whole surface of the grains can be ground, and uniform and even milling can be performed, thereby increasing the milling efficiency of the grain.

In addition, since the convex portion and the concave portion appear alternately, the grains present in the concave portion can move in various directions by the action of the convex portion a plurality of times within one rotation of the milling roll. Can be moved towards the milling roll to allow uniform and even milling throughout the introduced grain.

According to the invention of claim 5, since the volume of the cutting space formed between the cutting network members is alternately changed in the axial direction at the time of rotation of the cutting roll, the grain moving in the cutting chamber space can repeat the dense state. Can be. As a result, the grain direction tends to change in a dense state, and the grains located on the mesh member side and the milling roll side are alternately replaced, so that the whole surface of all grains can be ground uniformly and evenly. As a result, it is possible to increase the coating efficiency.

Claims (5)

As a grinding device for grinding and milling while conveying the introduced grains, A plurality of convex members are detachably provided on the outer circumferential surface of the adjusting roll made of a cylindrical roll, The convex member is formed by fixing very hard and fine particles to the surface of the member formed in the convex shape by machining in advance, and is mounted along the circumferential direction and the axial direction on the cylindrical roll surface. Grinding device. The method of claim 1, And the convex member is arranged in a form capable of moving the grain in the axial direction of the milling roll, and is provided on the circumferential surface of the milling roll. The method of claim 1, The said convex member is arrange | positioned in the axial direction from the circumferential direction of the said reinforcing roll, and it is arrange | positioned so that 180 degreeC reversal is provided based on the longitudinal center along this inclination direction. The method of claim 1, The convex member is circumferentially rotated in a state in which the convex part in which the convex member is located and the concave part in which the convex member is not located and the circumferential surface is exposed are alternately in contact with the grain when rotated. And arranging at intervals in the axial direction. The method according to any one of claims 1 to 5, A milling roll consisting of a cylindrical roll arranged coaxially with a rotatable conveying member disposed near the introduction portion of grains and having a plurality of convex members mounted on an outer circumferential surface thereof; A netting network member disposed around an outer circumference of the above-mentioned milling roll and constituting a moving space of grain between the milling roll, And a grain discharging portion formed on the opposite side to the conveying member in the axial direction of the refining roll.