JP2001321724A - Classifying feeder apparatus for rock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a classifying feeder apparatus for rocks capable of classifying a large quantity of rocks including small to large size within a shot time, transporting them to the next step and at the same time keeping the quality of rocks in the case of making the rocks as products by shaking off mud adhering to the rocks. SOLUTION: The classifying feeder apparatus comprises axially rotating units 12a, 12b,... and each axially rotating unit is equipped with a shaft 22 installed from the rock-throwing side toward the discharge side in a freely rotatable manner, a spirally projected strip 24 fixed in the shaft while spirally surrounding the shaft and a convexoconcave tooth unit 26 formed in the outer circumference of the spirally projected strip 24. Respective spirally projected strips 24 of adjacent axially rotating units are not intermeshed and the respective shafts 22 are kept from the adjacent shafts 22 at prescribed classifying gaps F to compose the classifying feeder apparatus 10 for rocks. Small size rocks are dropped through classifying gaps formed between the adjacent shafts, and large ones are transported by the convexoconcave tooth units of the respective spirally projected strips to classify and transport rocks at a high efficiency in a wide surface area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a classification and feeder for stones, which sorts and sorts the size of stones quarried from a quarry site and feeds the stones to the next process. The present invention relates to a classification feeder device for stones that can be classified and sent in a large amount and in a short time.

[0002]

2. Description of the Related Art Natural stones are used for civil engineering, construction, riverbank construction, residential use, ground stabilization sand, and the like. It is obtained by dividing these into sizes and further processing them. In the initial state of quarrying, there are various types of natural stones, for example, from several centimeters to diameters of about one meter. Used according to. When such classification and sorting are performed, for example, there is known a method of classifying while applying vibration using a sieving machine having eyes or holes through which only stones having a predetermined size or less can pass.

[0003]

In the above-mentioned method, a stone having a size smaller than the size of a sieve is dropped and dropped directly below a sieve while applying vibration to the sieve, and the belt is conveyed downward. When carrying out the next process, etc., for sorting gravel etc. with a diameter of about several centimeters, it is sufficient, but for stones of several tens of centimeters or more, use a sieving machine. A large load is applied to the vibration generator, causing a failure at an early stage and not being practical. In addition, there is a possibility that a loud noise is generated from the point of generating vibration, the surrounding working environment is deteriorated, and a pollution problem is caused. In addition, mud often contains raindrops and moisture on the surface of stones that have just been quarried, and mud sticks to the sieve of the sifter,
There is a problem that not only the classification accuracy and efficiency are impaired, but also the grade of the product is reduced. Also, there is no conventional sorting machine that automatically classifies relatively large stones with high efficiency.
The development of the device has been long-awaited.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and one object of the present invention is to provide a method for classifying a large amount of small to large stones in a short time and transferring the stones to the next step. Is to provide a classification feeder device. Another object of the present invention is to provide a classification and feeder device for stones capable of performing classification and feeding while removing mud attached to the stones and maintaining the quality of the stones as a product. It is to be.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a plurality of shaft rotation units provided with a longitudinal direction extending from the input side S to the discharge side D of the target stone. 12a, 12b,. . . These shaft rotation units are provided with a shaft 22 rotatably provided from the stone input side to the stone discharge side, a spiral ridge 24 helically wound around and fixed to the shaft. Helical ridges 26 provided on the peripheral edge of the helical ridge, the helical ridges 24 of the adjacent shaft rotating units are not engaged with each other, and are required between the respective shafts 22. Classification device 10 for stones provided to form a classification gap F
Consists of

The present apparatus also has side walls 18b and 18c provided at least on the outer surfaces of the outermost shaft rotation units 12a and 12d, respectively. A first outer rotation shaft rotation group 100 and a second outer rotation shaft rotation group 200 that rotate so as to trace downward from above may be provided.

The shafts 22 of the plurality of shaft rotation units 12
May be arranged in a convex arc shape when viewed in cross section.

Further, the side walls 18b and 18c may be formed so as to open upward in a sectional view.

Further, an auxiliary wall 44 may be vertically disposed at a position immediately above the outermost shaft rotation units 12a and 12d with a required separation gap.

Further, a synchronous rotation mechanism 28 may be provided so that each shaft 22 rotates synchronously.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments of a classification and feeder for stones according to the present invention will be described in detail with reference to the accompanying drawings. In FIG. 1, the stone classifying feeder device 10 includes a stone S to be classified and conveyed from a feeding side S to a discharging side D.
A plurality of shaft rotation units 12 are provided side by side with the direction toward to the longitudinal direction.

In FIG. 2, there is provided a footrest 16 provided with a foot 14 having a certain height, and an elongated rectangular metal formed on the upper part of the footrest 16 with upper and lower surfaces opened and surrounding four circumferences. A peripheral frame 18 made of metal is fixed. As shown in FIG. 2, a gentle slope 20 is provided on one short side of the surrounding frame 18 so as to form a shooter section for the introduction of stones. It forms the input side of stones. Further, the discharge wall on the discharge side D opposite to the input side S of the surrounding frame 18 can be opened and closed as required by the arrow via the pivot 21 as needed.

The surrounding frame 18 includes a charging wall 18a disposed on the charging side, left and right side walls 18b and 18c disposed on both outer sides of the shaft rotation unit 12, and a discharging wall 18d provided on the discharging side D of stones. And both ends thereof are joined to form an elongated rectangular frame. As shown in FIG. 3, the left and right side walls 18b and 18c are provided so as to open upward in a sectional view, that is, to be inclined so as to expand upward.

Returning to FIG. 1, four shaft rotation units 12a, 12b, 12
c and 12d are provided. In the figure, a shaft rotating unit 12 is provided with a long shaft 22 that is provided long from a stone input side S to a stone discharge side D, and a spiral ridge 24 that is formed in a continuous spiral shape in the radial direction of the long shaft 22. And this spiral ridge 24
And an uneven tooth body 26 provided on the periphery thereof. The shaft rotation units 12a, 12b. . . Is provided so as to rotate axially at a position inside the surrounding frame 18 and at least lower than the upper ends of the left and right side walls 18b and 18c.
In this embodiment, the four peripheral walls of the surrounding frame 18 are set to have the same height, and the left and right side walls are formed so as to expand upward as described above with the vertical wall provided perpendicular to the ground. And an inclined wall. The walls of the surrounding frame 18 may all be right-angled walls with respect to the ground so as to form a straight rectangular tube.

In FIG. 1, the input wall 18a and the discharge wall 18
A total of eight bearings (not shown) are provided at d at four opposing positions, and the long shafts 22 are rotatably supported by these bearings. And
As shown in FIGS. 4 and 5, a spiral ridge 24 is fixed to each of the long shafts 22 continuously in a spiral manner around the long axis. A concave-convex tooth body 26 in which concaves and convexes are alternately formed continuously in a gear shape is formed.

As shown in the figure, the uneven teeth 26 of the spiral ridges 24 of the adjacent shaft rotating units 12 are set so as to rotate without biting or interfering with each other. That is, the long shafts 22 are arranged and supported with a gap therebetween so that the uneven teeth 26 of the spiral ridge do not bite, and furthermore, there is a required distance between these long shafts. Is set so that the classification gap F is formed. As a result, when the plurality of shaft rotation units 12 are simultaneously rotated via a rotation mechanism to be described later, the introduced stones are classified by the uneven teeth 26 of the spiral ridge 24 while being sent from the introduction side to the discharge side. The stones smaller in size than the same classifying gap F are dropped downward from the gap F to perform the classifying feeding action. In addition, the uneven tooth body is not limited to the configuration of the embodiment. For example, the pitch width of the concave portion or the convex portion may be changed, and the height of the convex may be variously set without being uniform.

In FIG. 3, a plurality of shaft rotating units 1
2, that is, the shaft rotation unit group includes a first outer rotation shaft rotation group 100 and a second outer rotation shaft rotation group 200 that rotate so as to trace downward from above the left and right side walls 18b and 18c, respectively. I have. It is preferable that the divisions of the first and second shaft rotation groups are set in the shaft rotation units located on the inner side instead of the outermost one as much as possible. 1 and 3, the left two shaft rotation units 12a and 12b are set to rotate counterclockwise in FIG. 3 so as to trace downward from above the left wall 18b, respectively. The two right-hand shaft rotation units 12c and 12d are set so as to rotate clockwise so as to trace downward from above the right wall 18c. In this embodiment, the first outer rotating shaft group 100 includes two left shaft rotating units 12a, 12b, and the second shaft rotating group 200 includes two right rotating shaft units 12c, 12d. Further, the shaft rotation units belonging to the same group all rotate in the same rotation direction.

As a result, the two shaft rotation units 12b and 12c at the center of the four shaft rotation units are rotated in opposite directions, and the shaft rotation unit 12c closer to the right side wall 18c is rotated clockwise. As the shaft rotation unit 12b on the left side wall 18b rotates counterclockwise while rotating in the direction, the thrown stones are caught inside the double shaft rotation unit and do not fall. The classification gaps formed by the spiral ridges of the long axis are continuously moved to the discharge side, so that the stones placed on the upper surfaces of these spiral ridges are placed at the center side. In this case, it is moved outward so as to be flipped upward in FIG. 3, and the upper surface thereof is rolled along with the rotation of the four shaft rotating units, so that the upper surface is rolled along the spiral shape. Is is conveyed toward the discharge side D are. In this way, by arranging a plurality of shaft rotation units in parallel, for example, if provided so as to set these upper surfaces in a plane, a wide stone input portion and a transport portion can be secured, Classification and feeding of a large amount of stones can be realized in a short time.

The spiral winding direction of the spiral ridge attached to the long axis of the group of shaft rotating units corresponding to the respective side walls is set in a spiral winding form such that the spiral advances in a direction opposite to the rotation direction of the long axis. Need to be. For example, FIG.
Shaft rotation unit 1 that rotates up and left (counterclockwise)
In 2a and 12b, the spiral winding is such that the spiral advances clockwise. On the other hand, in the shaft rotating units 12c and 12d that rotate clockwise (clockwise), the spiral winding is configured so that the spiral advances counterclockwise. ing.

As shown in FIG. 3, the four long shafts 22 of these shaft rotation units are arranged in a downwardly convex arc shape in a sectional view. Accordingly, the center two 12b and 12c of the four shaft rotation units are set at substantially the same height, respectively, and the outer shaft rotation units 12a and 12c
The mounting position of 2d is set higher than the shaft setting height of these shaft rotation units on the center side. As a result, the stones which are flipped toward the upper surface side and further to the outer shaft rotation unit side by the two center rotation shaft rotation units 12b and 12c which rotate in opposite directions to each other are again directed to the center side by the gravity. To roll,
The stones to be conveyed efficiently are fed toward the discharge side by repeating the popping-out from the center side and the returning action to the center side by the own weight from the higher shaft rotating unit side closer to the outside.

Particularly, in this embodiment, the left and right side walls 18b and 18c are set at an upwardly open angle so as to expand toward the left and right sides and upward as described above. As a result, the stones that are likely to be repelled to the outside are not further detached from the feeder device itself, and the stones that are smoothly repelled without increasing the rotational load of the outermost shaft rotation units 12a and 12d. Perform the classification feed action.

Further, in this embodiment, as shown in FIGS. 2 and 6, a synchronous rotation mechanism 28 is provided in the stone classifying feeder 10 so that the long shafts 22 of these shaft rotation units are synchronously rotated. Is provided. In FIG. 6, sprockets 30a, 30b, 30c and 30d are fixed to the supply side S of the device at one end of each long shaft 22, and a chain 32 is adjusted to both sprockets 30a and 30b on the left side. Two sprockets 30 on the right side
A chain 34 is tuned to c and 30d. Further, gears 36 and 38, which rotate while meshing with each other, are fixed to the end of the long shaft 22 on the center side, and the left gear among them is connected to the rotation shaft of the drive motor 42 via a chain 40. Are linked. As a result, the rotational force of the motor 42 causes the respective long shafts 22 to rotate synchronously via these power transmission mechanisms.

In this embodiment, the classification gap F formed between the shaft rotation units 12 is set to be substantially hexagonal in accordance with the shape of the spiral ridge. That is, by setting the longitudinal position of the long axis 22 of the shaft rotating unit 12, as shown in FIG. 1, between the spiral ridge of the adjacent shaft rotating unit and the long axis at all times when the spiral ridge 24 rotates. A substantially hexagonal gap is formed so that only stones having a size equal to or smaller than the size of the classification gap F are dropped downward, and stones having a size larger than the classification gap F are left above and the shaft is removed. By the rotation operation of the rotation unit 12, the sheet is conveyed toward the discharge side via the spiral ridge.

In this embodiment, the classifying gap F is designed to have a substantially regular hexagonal shape due to the spiral form of the spiral ridge, but by increasing the gap h between the shafts 22 by increasing it. The opposite two sides of the hexagon are long hexagons, and the size of the stones to be dropped and classified can be set thereby. Furthermore, the size of the classifying gap F can also be varied by setting the spiral projection height of the spiral projection 24, that is, the projection height of the spiral projection in the radial direction from the shaft.

Further, in this embodiment, the classification gap F
Sets the longitudinal position of the shaft rotation unit so as to form a substantially hexagonal shape. However, the present invention is not limited to this. For example, as shown in FIG. May be set so as to be shifted from each other between the adjacent major axes so that the classification gap F forms a U-shape or an irregular hollow shape. In the present invention, since the gear-shaped uneven teeth 26 are formed particularly on the peripheral edge of the spiral ridge, the feeding operation of the stones from the input to the discharge direction is performed smoothly, and the stones adhere to the surface of the stones. It is possible to reliably remove the mud and the like so that the work following the next step can be performed smoothly, and furthermore, it is possible to keep the quality of the stones produced as good.

Next, the classification of stones according to the present embodiment is performed.
The operation of the damper device 10 will be described. In FIG. 2, when stones quarried from the introduction side S are thrown in, the stones naturally slide along the starter-shaped slope 20 and reach the upper surface of the shaft rotation unit 12. The shaft rotation units 12 that are synchronously rotated by the motor 40 rotate in directions different from each other for each of the first shaft rotation group 100 and the second shaft rotation group 200. The shaft rotation units 12a, 12b. . . Are respectively rotated in the same direction, and spiral ridges are respectively fixed to the long axis 22 in a spiral advance form in the opposite direction to the rotation direction, and further, they are directed downward from above the corresponding side walls. Rotate to trace. In response to these rotations, the classification gap between the major axes continuously shifts from the charging side to the discharging side. Stones smaller than the classifying gap fall down through the gap, but large stones are placed on their upper surface side with the continuous transition from the input side to the discharge side of the classifying gap, or It is sent from the loading side to the discharging side while rolling. Since the gear-shaped uneven teeth 26 are formed on the peripheral edge of the spiral ridge, the heavy stones R are reliably placed on the upper surface side of the shaft rotating unit to reliably catch the surface of the stone and roll. Alternatively, a feeding action is generated.

The two shaft rotation units 1 at the center are
2b and 12c are opposite to each other, so that when the classification gap is shifted to the discharge side, the injected stones are ejected outward and upward, and the ejected stones are shifted to the outer shaft rotation units 12a and 12d. Since the shaft rotation unit 12 is arranged in a convex arc shape as viewed in cross section as a whole, the stones fall again toward the center of the transport path formed by the shaft rotation unit group due to their own weight. The effect of this is that the outer shaft rotation unit 12
Stones can be transported smoothly without increasing the rotational load of the stones.

At this time, only the stones smaller than the classification gap F are dropped and classified, and only the stones larger than the separation gap F are conveyed toward the discharge side on the upper surface side of the shaft rotation unit 12. The stones that have reached the discharge wall 18d fall as they are and are sent to the next step by, for example, a belt conveyor (not shown).

With this arrangement, it is possible to secure a wide feeding portion, a wide transporting portion and a classifying portion, and to feed a large amount of stones to the next processing step. Thus, it is possible to provide a device which is significantly improved.

In this embodiment, the shaft rotation unit 1
2 is provided only four, but if necessary, two, three,
Five, six, or more pieces may be provided. 2
, The number of shaft rotation units belonging to the first and second shaft rotation groups is one, respectively.
The boundaries of these groups may be set at adjacent portions of any of the shaft rotation units. Preferably, it is better to set the boundaries of the two centrally opposed shaft rotation units arranged side by side.

The configuration of the wall of the surrounding frame 18 described above may be any as long as it has an upper end that is higher than the upper surface of the shaft rotation unit, and rotates the shaft with these shaft rotation units housed inside. However, for example, as shown in FIG. 10, the auxiliary wall 44 is vertically set in a state slightly separated from the left and right side walls 18 b and 18 c at a position almost directly above the outermost shaft rotation units 12 a and 12 d. They may be attached separately. The auxiliary wall 44 changes the supporting position,
It is preferable that the gap J between these shaft rotation units and the auxiliary wall 44 can be adjusted. For example, a support shelf that can change the support position in a stepwise manner on the input wall side or the discharge wall side is formed, and thereby the gap can be adjusted. Also in this case, classification and transport of the introduced stones can be performed smoothly. In this case, in particular, stones are less likely to bite between the outermost shaft rotation unit and the side wall and become clogged, and smooth feeding and classification operation can be maintained.

The stone classifying feeder of the present invention is not limited to the above-described embodiment, but may be modified without departing from the essence of the invention described in the claims.

[0033]

As described above, according to the stone classifying feeder of the present invention, a plurality of shaft rotating units provided side by side with the direction from the input side to the discharge side of the target stone as a longitudinal direction. These shaft rotation units are provided with a shaft rotatably provided from the input side to the discharge side of the stones, a spiral ridge spirally fixed to the shaft, and a spiral ridge. Uneven helical teeth provided on the periphery of the ridge, so that the spiral ridges of the adjacent shaft rotating units do not bite each other and form a required classification gap between each shaft. Because it is a configuration that is provided in
Dropping and collecting stones smaller than the classification gap from the classification gap, and reliably transporting stones larger than the classification gap to the discharge side to efficiently classify and transport large quantities of stones. Is possible. In addition, since the target stones are classified and transported only by the shaft rotating motion of the shaft rotating unit, the amount of noise is low, the work environment is maintained well, and it is possible to prevent pollution problems in the surrounding area. . In addition, the vibration does not cause loosening of a fastening portion to other devices. Further, the unevenness of the spiral ridge allows the surface of the stones to be muddy, thereby maintaining the quality without lowering the commercial value of the stones.

And a side wall provided at least on the outer surface side of the outermost shaft rotation unit, wherein the plurality of shaft rotation units are respectively rotated so as to trace downward from above the side wall. The first outer rotating shaft rotating group and the second outer rotating shaft rotating group are provided, so that the introduced stones are not caught and caught in the gap of the shaft rotating unit, so that the stones can be smoothly moved. In addition to ensuring proper rotation, classifying and transporting, it is possible to prevent an excessive load from being applied to the rotating power side.

Further, since the shafts of the plurality of shaft rotating units are arranged in a convex arc shape when viewed in a sectional view, the stones that are flipped outward from the central portion of the shaft rotating unit to the outside of the upper surface can be naturally removed by their own weight. By acting on the center side, it is possible to smoothly perform the classification and feeding operation of the stones.

Further, the side wall is formed so as to open upward in a cross-sectional view, so that the stones stay and clog on the outermost side shaft rotating unit and the side wall side, so that the shaft rotating unit is A smooth rotation operation can be maintained without causing rotation failure.

Further, an auxiliary wall is vertically disposed at a position directly above the outermost shaft rotating unit with a required separation gap, so that the outermost shaft rotating unit and the side wall are disposed. It is possible to reduce the likelihood that the stones will bite and clog between them, and maintain smooth feeding and classification operation.

In addition, by adopting a configuration in which a synchronous rotation mechanism is provided so that each shaft rotates synchronously, it is possible to ensure the rotation feed operation of the shaft rotation unit.

[Brief description of the drawings]

FIG. 1 is a plan view of a stone classification feeder device according to an embodiment of the present invention.

FIG. 2 is a front view thereof.

FIG. 3 is a longitudinal sectional view thereof.

FIG. 4 is an enlarged explanatory view of a main part in which a part of a shaft rotation unit is omitted.

FIG. 5 is a longitudinal sectional view thereof.

FIG. 6 is an explanatory right side view of FIG. 2;

FIG. 7 is an operation explanatory view of a stone classification feeder device according to the embodiment of the present device.

FIG. 8 is an operation explanatory view of the classification feeder device for stones according to the embodiment.

FIG. 9 is a partially omitted plan explanatory view when the longitudinal direction position of the long axis 22 of the shaft rotation unit 12 is set to be shifted from one another between adjacent long axes.

FIG. 10 is a partially-illustrated cross-sectional view of a main part showing another example of the surrounding frame.

[Explanation of symbols]

 Reference Signs List 10 Stone classification feeder device 12 Shaft rotation unit 18b Left side wall 18c Right side wall 22 Long axis 24 Spiral ridge 26 Irregular tooth body 28 Synchronous rotation mechanism 100 First shaft rotation group 200 Second shaft rotation group F Classification gap S Supply side D Discharge side

Claims (6)

[Claims] 1. A plurality of shaft rotation units provided side by side with a direction from a target stone input side to a target stone discharge side as a longitudinal direction, and these shaft rotation units are arranged from a stone input side to a stone discharge side. A shaft provided rotatably toward the shaft, a spiral ridge helically wrapped around the shaft, and a concave-convex tooth body provided on a peripheral edge of the spiral ridge. A classification feeder device for stones which is provided so that the spiral ridges of the rotating shaft units do not engage with each other and form a required classification gap between the shafts. And a side wall provided at least on the outer surface side of the shaft rotation unit located at the outermost side, wherein the plurality of shaft rotation units rotate so as to trace downward from above the side wall, respectively. The classification feeder device for stones according to claim 1, further comprising a first outer rotation shaft rotation group and a second outer rotation shaft rotation group. 3. The classification feeder for stones according to claim 1, wherein the shafts of the plurality of shaft rotation units are arranged in a convex arc shape when viewed in a sectional view. 4. The classification feeder for stones according to claim 1, wherein the side wall is formed so as to open upward in a sectional view. 5. The stone according to claim 2, wherein an auxiliary wall is vertically disposed at a position immediately above the outermost shaft rotation unit with a required separation gap. Classification feeder device. 6. The classification feeder for stones according to claim 1, further comprising a synchronous rotation mechanism for rotating the respective shafts in synchronization with each other.