JP4027142B2 - Vibrating sieve machine and sieve equipment equipped with it - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration sieve for sieving various objects to be processed, such as quarrying and coal, and a sieve facility equipped with the vibration sieve.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a vibration sieving machine has been used for sieving processed materials such as quarrying and coal with a predetermined size. This vibrating sieve machine is provided with a sieve mesh having an opening of a predetermined size in the horizontal direction, and the sieve mesh is vibrated with a prescribed centrifugal force. The object to be processed smaller than the opening is dropped under the net, and the object to be processed is sieved so as to be discharged from the net. In particular, in the case where the object to be processed is a large lump or the like, a punching net (having a hole of a predetermined size punched on almost the entire surface of the steel plate) is used (hereinafter including this punching net). "Sieving net").
[0003]
However, when sieving using such a sieve mesh, since the sieve mesh has a closed portion around the opening, the workpiece flowing on the sieve mesh adheres to the closed portion in the width direction and clogs the opening. May end up. If the object to be processed clogs the opening in this manner, the sieving efficiency is deteriorated and the processing capacity is deteriorated.
[0004]
Therefore, as a sieving means for preventing such clogging, square bar-shaped grizzly bars (hereinafter referred to as “taper rods”) arranged side by side so that the opening widens toward the tip are used, and the closed portion in the width direction is used. There is a vibration sieving machine that eliminates clogging and prevents clogging of the conveyed object. This taper rod is provided with an opening continuous in the flow direction of the object to be processed, and the object to be processed smaller than the opening between the taper rods arranged side by side falls downward, and there is no closing portion in the flow direction. So clogging is difficult.
[0005]
[Problems to be solved by the invention]
However, in the case of the taper rod as described above, since the taper rod is formed in the shape of a square bar, when the object to be processed falls downward from between the taper rods, the taper rods come into contact with the side surfaces of the taper rods and are clogged between the taper rods. It's easy to do.
[0006]
For this reason, the centrifugal force of the vibration node may be increased so that the workpiece is not clogged even if it hits the surface in this way, but in order to increase the centrifugal force, the load acting on each component member can be withstood. It is necessary to strengthen the structure so that it can be obtained. However, in this case, the productivity of the vibrating sieve is deteriorated and the installation equipment is strengthened due to the increase in the weight of the sieve, resulting in an increase in equipment costs.
[0007]
[Means for Solving the Problems]
Therefore, in order to solve the above-mentioned problem, the vibration sieve machine of the present invention is provided with a rod for sieving in the flow direction of the workpiece in the sieve body, and the vibrating sieve machine for sieving the workpiece with the rod, The rods are arranged in parallel in the width direction of the sieve body at a predetermined interval, the rods are configured by round rod-shaped taper rods whose diameters are reduced at the tips , and a flexible cover is provided to cover the upper surface of the mounting portion of the taper rod. The cover input side of the cover is fixed to the sieve body, and the discharge side is a free end . In this way, the taper rod is formed in a round bar shape, and by disposing the taper rod at a predetermined interval in the width direction of the sieve body, the workpiece to be dropped downward from between the taper rods passes through the taper rod in a substantially line contact state. Therefore, the object to be processed can be prevented from clogging between the taper rods. Further, the flexible cover with the discharge side as a free end causes the discharge side of the flexible cover to bend due to the vibration of the vibrating screen, so that the object to be processed flowing on the flexible cover adheres to the attachment portion of the taper rod. Can be stably prevented.
[0008]
If the taper rod is arranged in a plurality of stages in the longitudinal direction of the sieve body, and the taper rod is arranged in a step shape positioned sequentially downward from the workpiece input side, the object to be processed falls down on the taper rod of the plurality of stages. Therefore, stable sieving can be performed.
[0010]
Furthermore, if the taper rod disposed in the step shape is inclined with a smaller taper rod positioned on the workpiece input side and a taper rod positioned on the workpiece discharge side larger, the workpiece input portion In order to classify objects with different sizes of objects to be processed, the objects to be processed flowing toward the discharge side should be discharged so as to be classified by the speed difference caused by the specific gravity when flowing on a tapered rod with a large angle. Can do.
[0011]
Further, if the inclination angle of the taper rod is gradually increased from the taper rod positioned on the workpiece input side to the taper rod positioned on the discharge side, the speed difference caused by the specific gravity difference of the workpiece is increased, and the specific gravity is increased. The accuracy of classification can be improved.
[0012]
On the other hand, the sieve equipment of the present invention is provided with a plurality of discharge chutes that divide the workpiece on the sieve discharged from the taper rod in the discharge direction on the discharge side of the vibration sieve machine for classifying the specific gravity. A separation gate for adjusting the division position of the workpiece is provided between them. According to the sieve equipment configured as described above, the speed difference is caused by the specific gravity difference of the object to be processed, and the object to be processed can be classified by the specific gravity according to the dropping position of the object to be processed discharged from the vibration sieve machine. it can.
[0013]
In addition, the upper end position of the separation gate is discharged from the vibration sieve by configuring the distance between the workpiece discharge position on the sieve discharged from the taper rod of the vibration sieve and the distance adjustment. It is possible to finely adjust the position at which the workpiece is divided, and to deal with various classifications of the workpieces.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a taper rod mounting structure in a vibrating sieve according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the taper rod mounting structure, and FIG. 3 is a plan view of the taper rod mounting structure. In this embodiment, a taper rod formed of a round bar will be described as an example.
[0015]
As shown in FIG. 1, the taper rod 1 provided in the vibration sieve is composed of an attachment portion 2 having a predetermined length formed with a predetermined diameter and a taper portion 3 formed at the front portion of the attachment portion 2. It is a stick member. At the rear portion of the attachment portion 2, a flange portion 4 is provided that is engaged with the taper rod attachment members 5 and 6 for attaching the taper rod 1.
[0016]
The taper rod 1 is attached to an attachment space 7 formed in taper rod attachment members 5 and 6 which are divided into upper and lower parts. The mounting space 7 is formed in a semicircular shape with a radius substantially equal to the mounting portion diameter of the taper rod 1 in the axial direction, and a plurality of mounting spaces 7 are formed at a predetermined interval P in the width direction. This interval P determines the opening 8 (opening) formed between the taper rods 1 when the taper rods 1 are provided.
[0017]
Then, the attachment portion 2 of the taper rod 1 is sandwiched between the attachment spaces 7 provided in the upper and lower taper rod attachment members 5 and 6, and the taper rod is connected to the taper rod attachment member 5 with the fixing bolt 9 from below the taper rod attachment member 6. 1 and the taper rod mounting members 5 and 6 are integrally coupled. In this embodiment, three taper rods 1 are fixed to a pair of taper rod mounting members 5 and 6 to constitute one unit, but the number of taper rods 1 fixed to the pair of taper rod mounting members 5 and 6 is as follows. It is not limited.
[0018]
As shown in FIGS. 2 and 3, the taper rod mounting members 5 and 6 to which the plurality of taper rods 1 are integrally fixed as described above are upper connection members that are structural members that connect the width direction of the sieve body (described later). The members 10 are arranged in the width direction. These taper rod mounting members 5 and 6 are fixed to the upper surface of the upper connecting member 10 with bolts 12 inserted from below the opening groove 11 formed in the central portion of the upper connecting member 10. 13 is a washer. Thus, when the taper rod mounting members 5 and 6 are arranged in parallel in the width direction, a sieve surface in which the taper rods 1 are arranged in parallel at a predetermined interval P is formed.
[0019]
In this embodiment, since the round rod is used for the taper rod 1, the contact with the workpiece passing between the tapered rods 1 arranged in parallel becomes a line contact, and the workpiece is not easily clogged. . In this embodiment, a round bar is used for the taper rod 1. However, even if the taper rod 1 is formed using a bar having a polygonal cross section close to the round bar, the tape rod 1 is also in a similar manner to the workpiece to be processed which is almost in line contact. As a contact, clogging can be made difficult.
[0020]
As shown in FIG. 2, in this embodiment, the upper connecting member 10 is attached to both sides in a state of facing each other so that an opening groove 11 into which a bolt 12 can be inserted is formed between the structural steels 10 a. It is formed by fixing the flange 10b and closing the opening side of the shape steel 10a with a plate material 10c. Thereby, the opening groove | channel 11 continuous in the center part width direction of the upper connection member 10 is formed. The opening groove 11 formed in this way can fix the taper rod mounting members 5 and 6 at arbitrary positions in the width direction by inserting bolts 12 from below. 10d is a mounting hole of the mounting flange 10b.
[0021]
Further, a flexible cover 14 is provided above the tapered rod mounting members 5 and 6 fixed to the upper connecting member 10. The flexible cover 14 covers the upper surface of the taper rod attachment member 5 and is formed to have a size that projects from the discharge side of the taper rod attachment member 5 to the base of the taper portion 3 of the taper rod 1.
[0022]
The flexible cover 14 is mounted in a state of being sandwiched between the fixed cover 15 and the taper rod mounting member 5 by fixing the fixed cover 15 provided on the upper portion to the taper rod mounting member 5 with a mounting screw 16. It has been. The fixed cover 15 is formed in a substantially L shape, and is fixed in a downward L shape so as to cover the input side upper portion of the upper connecting member 10 from the input side end portion of the flexible cover 14. The flexible cover 14 fixed by the fixed cover 15 has a free end on the discharge side O in a state where only the input side I is fixed.
[0023]
Thus, since the flexible cover 14 in which only the input side is fixed is provided on the upper portion of the taper rod mounting member 5, the discharge side of the flexible cover 14 always flutters due to the vibration of the vibrating screen. The object to be processed can be reduced from adhering to the vicinity of the attachment member 5 of the taper rod 1, and the maintenance time required for the object to be processed to adhere and be removed can be reduced.
[0024]
Further, the fixed cover 15 for attaching the flexible cover 14 has a substantially L-shaped cross section and is provided so as to cover the insertion side of the taper rod 1, so that the object to be processed is located between the upper taper rod 1 and the vicinity of the attachment member 5. Even if it falls, it can prevent adhering to this attachment member 5 vicinity.
[0025]
FIG. 4 is a plan view of a vibrating screen equipped with the tapered rod mounting structure shown in FIG. FIG. 5 is a view showing an embodiment of the sieve equipment provided with the vibration sieve device, and is a side view of the state in which the upper connecting member and the taper rod of the vibration sieve device are seen through.
[0026]
As shown in the figure, the vibration sieve device 20 provided with the taper rod 1 described above is provided with flat frame members 21 on both sides, and the width direction between these frame members 21 is connected by a columnar connecting member 22 and sieved. A main body 23 is configured. The connecting member 22 includes an upper connecting member 10 for attaching the taper rod 1 described above, and a lower connecting member 24 for connecting the lower portion of the frame member 21. Further, support arms 25 project from both outer sides of the frame member 21 and are supported by an elastic member 27 (spring) on a stand 26 provided on the gantry side (not shown).
[0027]
A vibrator 28 (vibrator) is provided at a substantially central position of the frame member 21. As shown in FIG. 4, the vibrator 28 is formed in a circular shape on the sieve body 23 by connecting unbalanced weights 29 provided on both outer sides of the frame member 21 between the frame members 21 and rotating them integrally. It is configured to cause vibrations. The unbalanced weight 29 includes a drive shaft 30 provided on the side of the frame member 21, a speed reducer 31 that rotates the drive shaft 30, and a drive coupled to the speed reducer 31 via a drive belt 33. It is rotationally driven by a drive device comprising a motor 32. 32 a is a frame for the drive motor 32 and the speed reducer 31.
[0028]
Therefore, when the drive motor 32 is rotated, the unbalanced weight 29 is rotated via the drive belt 33, the speed reducer 31, and the drive shaft 30, and the sieve body 23 is vibrated with a predetermined amplitude to be applied to the sieve surface. A circular vibration is caused.
[0029]
As shown in FIG. 5, in the width direction of the upper connecting member 10 of the vibration sieve 20 configured as described above, the taper rod mounting members 5 and 6 to which the taper rod 1 is integrally mounted as described above are fixed. The In this example, 18 taper rods 1 are juxtaposed between the frame members 21 by providing 6 taper rod mounting members 5 and 6 in the width direction. The openings 8 between the tapered rods 1 arranged side by side as described above are openings for classifying the workpieces W by size, and slit-like openings spreading from the input side I to the discharge side O of the workpieces W. It has become. This opening is set by the interval P of the taper rod 1.
[0030]
The upper connecting members 10 provided from the input side I to the discharge side O of the frame member 21 are provided with taper rod attachment members 5 and 6 to form a sieve surface. These taper rod mounting members 5 and 6 are arranged in a step shape so as to be sequentially positioned downward from the input side I to the discharge side O. That is, in the state where the taper rods 1 are provided on all the upper connecting members 10, the taper rods 1 are sieve surfaces arranged in a step shape in a side view.
[0031]
Further, in this embodiment, the inclination angle of the taper rod 1 is made smaller on the input side I and larger on the discharge side O. In this example, the taper rod 1 from the input side to the third stage is mounted at the same small inclination angle θ, and the taper rod 1 from the fourth stage is mounted so that the inclination angle θ gradually increases, and from the input side to the discharge side. The inclination angle of the taper rod 1 is increased as it goes.
[0032]
By varying the inclination angle of the taper rod 1 in this way, the composition of the workpiece W is not constant, or the workpiece W having a wide particle size range is subjected to normal sieving and specific gravity classification. Can be performed by one vibration sieve machine 20. For this specific gravity classification, discharge chutes 34 and 35 are provided on the discharge side of the vibration sieve 20, and a separation gate 36 is provided between the discharge chutes 34 and 35.
[0033]
That is, by arranging the taper rod 1 in this way, the taper rod 1 at a small angle on the input side is screened to remove the small workpiece W that becomes an obstacle to the specific gravity classification, and as it goes to the discharge side. A speed difference is caused by a difference in repulsive force depending on the specific gravity of the workpiece W by the taper rod 1 having a large angle, and a difference is generated in the trajectory of the workpiece W discharged from the upper portion of the taper rod 1 by this speed difference. Thus, the workpiece W on the sieve discharged from the vibration sieve machine 20 is dropped to one of the discharge chutes 34 and 35 to be sent to the next process. That is, it is discharged to one of the discharge chutes 34 and 35 depending on the distance of the locus discharged from the vibration sieve machine 20. This classification position can be adjusted by a separation gate 36 provided between the discharge chutes 34 and 35.
[0034]
A liner material 21a is provided on the inner surface of the frame member 21, a cover 21b is provided on the input side, and an outlet chute 21c is provided on the discharge side. 37 and 38 are carry-out conveyors, and 39 is a discharge chute under the sieve.
[0035]
FIG. 6 is a longitudinal sectional view showing a separation gate in the sieve equipment of FIG. As shown in the figure, the separation gate 36 for separating the workpiece W discharged from the sieve of the vibration sieve machine 20 includes a base plate 36a, and a movable plate 36b slidable upward from the base plate 36a. The moving plate 36b can be moved (moved up and down) within the range of the long hole 36c provided in the moving plate 36b. Reference numeral 36d denotes a fixing bolt. The base plate 36a is attached so that the lower pivot shaft 36e can pivot on the separation part of the discharge chutes 34 and 35.
[0036]
By rotating the separation gate 36 to adjust the angle, or by extending the moving plate 36b to adjust the distance, as shown in FIG. It is possible to arbitrarily adjust the position separating the non-existing one. Thereby, the to-be-processed object W from which specific gravity differs can be classified and discharged from separate discharge chutes 34 and 35.
[0037]
According to the sieving equipment 40 configured as described above, the workpiece W input from the input side I of the vibration sieve device 20 flows on the taper rod 1 to the discharge side O, and the opening 8 between the taper rods 1. A smaller workpiece W falls downward. At this time, the workpiece W falling from between the tapered rods 1 falls downward while coming into contact with the tapered rods 1 by line contact, so that clogging can be suppressed and sieved. Further, even when the workpiece W contains water like volcanic ash, it does not adhere to the attachment portion of the taper rod 1 due to the flapping of the flexible cover 14 and flows down on the taper rod 1 provided in a step shape. Sieving efficiently.
[0038]
Moreover, the workpiece W flowing down the stepped taper rod 1 causes a speed difference due to the difference in specific gravity while falling on the taper rod 1 whose inclination angle gradually increases, and therefore, the workpiece discharged from the vibrating sieve 20 by this speed difference. By adjusting the drop position of the workpiece W at the position of the separation gate 36, the workpiece W on the sieve discharged from the upper portion of the taper rod 1 can be further classified by specific gravity.
[0039]
In addition, since the classification position can be easily changed by setting the height and angle of the separation gate 36, it can be easily divided at an arbitrary specific gravity according to the workpiece W.
[0040]
In the embodiment described above, the workpiece W on the sieve is divided into two types by the separation gate 36, but may be divided into three or more types, and is not limited to the above-described embodiment.
[0041]
Moreover, what is necessary is just to set suitably the step number and angle which provide the taper rod 1 according to the to-be-processed object W, and is not limited to embodiment mentioned above.
[0042]
Furthermore, the above-described embodiment is an embodiment, and various modifications can be made without departing from the spirit of the present invention. The present invention is not limited to the above-described embodiment.
[0043]
【The invention's effect】
The present invention is implemented in the form described above, and has the following effects.
[0044]
The object to be processed that passes between the taper rods passes almost linearly with the taper rod, so that it is possible to effectively prevent the object to be processed from clogging between the taper rods, and the stable operation of the vibrating sieve machine can be achieved. It becomes possible.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a taper rod mounting structure of a vibrating sieve showing an embodiment of the present invention.
2 is a longitudinal sectional view of the taper rod mounting structure shown in FIG. 1. FIG.
3 is a plan view of the taper rod mounting structure shown in FIG. 2. FIG.
4 is a plan view of a vibrating sieve equipped with a taper rod mounting structure shown in FIG. 1. FIG.
5 is a drawing showing an embodiment of the sieve equipment provided with the vibrating screen shown in FIG. 4, and is a side view of a state where the taper rod of the vibrating screen is seen through.
6 is a longitudinal sectional view showing a separation gate in the sieve facility of FIG. 5. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Tapered rod 2 ... Mounting part 3 ... Tapered part 4 ... Gutter part 5, 6 ... Taper rod mounting member 7 ... Mounting space 8 ... Opening 9 ... Fixing bolt 10 ... Upper connection member 11 ... Opening groove 12 ... Bolt 14 ... Flexibility Cover 15 ... Fixed cover 20 ... Vibrating sieve 21 ... Frame member 22 ... Connecting member 23 ... Sieve body 24 ... Lower connecting member 25 ... Support arm 26 ... Stand 27 ... Elastic member 28 ... Vibrator 29 ... Unbalanced weight 30 ... Drive Shaft 31 ... Reducer 32 ... Drive motor 33 ... Drive belts 34, 35 ... Discharge chute 36 ... Separation gates 37, 38 ... Unloading conveyor 39 ... Discharge chute 40 ... Sieve facility W ... Processed object

Claims (6)

In a vibrating sieve machine that provides a sieving rod in the flow direction of the workpiece of the sieving body and sieving the workpiece with the rod,
The rods are arranged side by side in the width direction of the sieve body at a predetermined interval, and the rods are constituted by round rod-like taper rods whose tips are reduced in diameter ,
A vibration sieving machine comprising: a flexible cover that covers an upper surface of the attachment portion of the taper rod; the workpiece input side of the flexible cover is fixed to the sieve body, and the discharge side is a free end .   2. The vibration sieving machine according to claim 1, wherein the taper rod is arranged in a plurality of stages in the longitudinal direction of the sieve body, and the taper rod is arranged in a step shape positioned sequentially downward from the workpiece input side. The inclination angle of the tapered rod which is arranged in the stepped, tapered rod located on the input side of the object to be processed is small, according to claim 1 or claim tapered rod located on the discharge side of the object to be treated, characterized in that the large Item 3. The vibrating sieve machine according to Item 2 . 4. The vibration sieving machine according to claim 3, wherein the inclination angle of the taper rod is gradually increased from the taper rod located on the input side of the workpiece to the taper rod located on the discharge side. A plurality of discharge chutes are provided on the discharge side of the vibrating sieve machine according to claim 3 or 4 to divide the workpiece on the sieve discharged from the taper rod in the discharge direction. A sieving facility provided with a separation gate for adjusting the division position of the processed material. 6. The sieving equipment according to claim 5 , wherein an upper end position of the separation gate is configured to be capable of adjusting a distance to a workpiece discharge position on the sieve discharged from the taper rod of the vibrating sieve machine.

Images