JP2003300019A - Vibration screen and screen equipment provided with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that the side face of a conventional taper rod comes into face contact with a material to be treated when the material passes through between the rods because the rod is formed in the shape of a square bar, and tends to cause clogging as a result. <P>SOLUTION: Rods are juxtaposed at a predetermined interval P in the width direction of a screen main body. The rod comprises a round bar-shaped taper rod 1 having the diameter of a tip part tapered in the flow direction of the material to be treated of the screen main body. The material W to be treated passing between the taper rods 1 passes in line contact with the taper rods 1, thereby the clogging of the material W between the taper rods 1 is suppressed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibrating sieving machine for sieving various objects to be treated such as quarry and coal, and sieving equipment equipped with the vibrating sieving machine.

[0002]

2. Description of the Related Art Conventionally, a vibration sieving machine has been used for sieving processed materials such as quarry and coal into a predetermined size. This vibrating sieving machine is provided with a sieve screen having openings of a predetermined size in the horizontal direction, and by vibrating the sieve screen with a predetermined centrifugal force, the objects to be processed flowing on the screen are An object to be treated smaller than the opening is dropped below the net, and an object to be treated larger than the opening is discharged from above the net.
And, in particular, when the object to be processed is a large block or the like, a punching net (a steel plate having a hole of a predetermined size punched out over almost the entire surface) is used (hereinafter, this punching net is also included. Called "sieve net").

However, when sieving is performed using such a screen, the screen has a closed portion around the opening,
The object to be processed flowing on the sieve mesh may adhere to the closed portion in the width direction and clog the opening. If the object to be processed clogs the opening in this way, the sieving efficiency and the processing capacity are deteriorated.

Therefore, as a sieving means for preventing such clogging, square bar-shaped grizzly rivers (hereinafter referred to as "taper rods") arranged side by side so that the openings are widened toward the tip end are used. There is a vibrating sieving machine which tries to sift through the material by preventing the clogging of the transported object by eliminating the closed part. This taper rod is provided with continuous openings in the flow direction of the object to be processed, and the object to be processed smaller than the openings between the taper rods arranged in parallel drops downward, and there is no closed portion in the direction of flow. Therefore, it is hard to clog.

[0005]

However, in the case of the above-mentioned taper rod, since the taper rod is formed in the shape of a square rod, when the object to be processed falls downward from between the taper rods, it comes into contact with the side surface of the taper rod. In other words, it is easy for clogging between the taper rods.

Therefore, the centrifugal force of the vibrating node may be increased so that the object to be processed does not become clogged even if it hits the surface in this way. However, in order to increase the centrifugal force, it acts on each component. It is necessary to strengthen the structure to withstand the load. However, in this case, the productivity of the vibrating screener deteriorates and the structure of the installed equipment is strengthened due to the increase in the weight of the screener, resulting in an increase in equipment cost.

[0007]

In order to solve the above problems, therefore, the vibrating screener of the present invention is provided with a rod for sieving in the flow direction of the object to be processed of the main body of the screen, and the rod is used to process the object to be processed. In the vibrating sieving machine for sieving, the rods are arranged in parallel in the width direction of the sieving body at a predetermined interval, and the rods are constituted by round rod-shaped taper rods whose tip diameter is reduced. By forming the taper rod in the shape of a round bar in this way and disposing the taper rods at a predetermined interval in the width direction of the sieve body, the object to be processed that falls downward from between the taper rods passes in a state of substantially linear contact with the taper rod. As a result, the object to be processed can be prevented from clogging between the tapered rods.

If the taper rods are arranged in a plurality of stages in the longitudinal direction of the sieve body and the taper rods are arranged in a stepwise position located downward from the side where the object to be treated is placed, the object to be treated is placed on the plurality of tapered rods. Since it flows downward, it is possible to perform stable sieving.

Further, if a flexible cover for covering the upper surface of the mounting portion of the taper rod is provided, and the side of the flexible cover to be treated that is to be treated is fixed to the sieve body and the discharge side is a free end, the vibrating screener is used. Since the discharge side of the flexible cover bends due to the vibration, the object to be processed flowing on the flexible cover can be stably prevented from adhering to the mounting portion of the taper rod.

Further, the inclination angle of the taper rods arranged in a stepped manner can be reduced by making the taper rod located on the input side of the object to be processed smaller and the taper rod located on the discharge side of the object to be processed larger. In the charging section of the, the objects with different sizes to be processed are sifted, and the objects to be processed flowing toward the discharge side are classified by the speed difference caused by the size of specific gravity when flowing on the taper rod with a large angle. Can be discharged.

Further, if the inclination angle of the taper rod is gradually increased from the taper rod located on the input side of the object to be processed to the taper rod located on the discharge side, the speed difference caused by the difference in specific gravity of the object to be processed is further increased. hand,
It is possible to improve the accuracy of the specific gravity classification.

On the other hand, in the sieving equipment of the present invention, a plurality of discharge chutes are provided on the discharge side of the vibrating sieving machine for classifying the specific gravity so as to divide the object to be treated on the sieve discharged from the taper rod in the discharge direction. A separation gate is provided between the discharge chutes to adjust the dividing position of the object to be treated. According to the sieving equipment configured as described above, a speed difference is generated due to a difference in specific gravity of the object to be processed, and the object to be processed can be classified even by the specific gravity depending on the falling position of the object to be processed discharged from the vibrating screener. it can.

In addition, the upper end position of the separation gate can be adjusted in distance from the object discharge position on the sieve discharged from the taper rod of the vibrating screener so that the vibrating screener can be operated. It is possible to finely adjust the position at which the discharged object to be treated is divided, and it is possible to cope with more various types of sieving classification of the object to be treated.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a taper rod mounting structure in a vibrating screener according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the taper rod mounting structure.
FIG. 4 is a plan view of the same tapered rod mounting structure. In this embodiment, a taper rod formed of a round bar will be described as an example.

As shown in FIG. 1, a taper rod 1 provided in a vibrating screener includes a mounting portion 2 having a predetermined diameter and a predetermined length, and a taper portion 3 formed at a front portion of the mounting portion 2. Is a bar member composed of. At the rear portion of the mounting portion 2, a collar portion 4 that engages with the taper rod mounting members 5 and 6 for mounting the taper rod 1 is provided.

This taper rod 1 is mounted in a mounting space 7 formed in taper rod mounting 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 predetermined intervals P in the width direction. This interval P determines the openings 8 (opening) formed between the tapered rods 1 when the tapered rods 1 are provided.

The upper and lower taper rod mounting members 5,
The mounting portion 2 of the taper rod 1 is sandwiched in the mounting space 7 provided in 6, and the taper rod 1 and the taper rod mounting members 5 and 6 are connected by connecting the taper rod mounting member 5 from below the taper rod mounting member 6 with the fixing bolt 9. Are integrally connected. In this embodiment, three taper rods 1 are fixed to the pair of taper rod mounting members 5 and 6 to form one unit. However, the number of the taper rods 1 fixed to the pair of taper rod mounting members 5 and 6 is It is not limited.

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 structural members connecting the width direction of the sieve body (described later). The upper connecting members 10 are arranged side by side 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 an opening groove 11 formed in the central portion of the upper connecting member 10. 13 is a washer. When the taper rod mounting members 5 and 6 are arranged side by side in the width direction in this manner, a screen surface in which the taper rods 1 are arranged side by side at a predetermined interval P is formed.

In this embodiment, since the round rod is used as the taper rod 1, the contact with the object to be processed passing between the taper rods 1 arranged in parallel becomes a line contact, and the object to be processed is clogged. Hard to do. In this embodiment, a round rod is used as the taper rod 1, but even if the taper rod 1 is formed by using a rod material having a polygonal cross section close to that of the round rod, the taper rod 1 is similar to an object to be processed which is almost in line contact. As a contact, clogging can be made less likely.

As shown in FIG. 2, the upper connecting member 10 is provided.
In this embodiment, the bolt 12 is formed between the shaped steels 10a.
Is formed by fixing the mounting flanges 10b on both sides in a state of facing each other so as to form an opening groove 11 into which is inserted, and closing the opening side of these shaped steels 10a with a plate material 10c. Thereby, the opening groove 11 continuous in the width direction of the central portion of the upper coupling member 10 is formed. The taper rod mounting members 5 and 6 can be fixed to the opening groove 11 thus formed at any widthwise position by inserting the bolt 12 from below. 10d is a mounting hole for the mounting flange 10b.

Further, a flexible cover 14 is provided above the taper 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 mounting member 5 and is formed in such a size that it projects from the discharge side of the taper rod mounting member 5 to the base of the taper portion 3 of the taper rod 1.

The flexible cover 14 is sandwiched between the fixed cover 15 and the tapered rod mounting member 5 by fixing the fixed cover 15 provided on the upper portion to the tapered rod mounting member 5 with the mounting screws 16. It is installed in the state. The fixed cover 15 is formed in a substantially L shape, and is fixed in a downward L shape so as to cover the closing side end of the flexible cover 14 and the charging side upper portion of the upper connecting member 10. The flexible cover 14 fixed by the fixed cover 15 has the discharge side O with only the input side I fixed.
Is a free end.

As described above, since the flexible cover 14 fixed only on the feeding side is provided on the upper portion of the taper rod mounting member 5, the discharging side of the flexible cover 14 is always kept by the vibration of the vibrating screener. It is possible to reduce the amount of fluttering that the object to be processed adheres to the vicinity of the mounting member 5 of the taper rod 1, and it is possible to reduce the maintenance time required to adhere and remove the object to be processed.

Further, the fixed cover 15 to which the flexible cover 14 is attached has a substantially L-shaped cross section and is provided so as to cover the loading side of the taper rod 1, so that the object to be processed is mounted from between the taper rods 1 on the upper stage side. Even if it falls near the member 5, it can be prevented from adhering to the vicinity of the mounting member 5.

FIG. 4 is a plan view of a vibrating screener having the taper rod mounting structure shown in FIG. FIG. 5: is drawing which shows one Embodiment of the sieve installation provided with the same vibration sieving machine, and is a side view of the state which looked through the upper connection member and taper rod of a oscillating sieving machine.

As shown, the taper rod 1 described above.
The vibrating sieving machine 20 is provided with flat plate-shaped frame members 21 on both sides, and the width direction between these frame members 21 is connected by columnar connecting members 22 to form a screen main body 23.
Is configured. The connecting member 22 is composed of an upper connecting member 10 to which the above-mentioned taper rod 1 is attached and a lower connecting member 24 that connects the lower portion of the frame member 21. Support arms 25 project from both outer sides of the frame member 21, and are supported by elastic members 27 (springs) on a stand 26 provided on the gantry side (not shown).

Further, a vibrator 28 (vibrator) is provided at a substantially central position of the frame member 21. As shown in FIG. 4, the vibrator 28 includes the frame member 2
Unbalanced weights 29 provided on both outer sides of 1 are connected between the frame members 21, and are configured to rotate the screen bodies 23 in a circular manner by rotating them integrally. The unbalanced weight 29 is used for the frame member 21.
Drive shaft 30 provided on the side of the drive shaft, a speed reducer 31 for rotating the drive shaft 30, a speed reducer 31 and the drive belt 3
It is rotatably driven by a drive device including a drive motor 32 connected via 3. 32 a is a mount for the drive motor 32 and the speed reducer 31.

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. A circular vibration is generated on the screen surface.

As shown in FIG. 5, in the width direction of the upper connecting member 10 of the vibrating screener 20 thus constructed, the taper rod mounting members 5 and 6 to which the taper rod 1 is integrally mounted as described above are provided. Is fixed. In this example, 18 taper rods 1 are provided between the frame members 21 by providing 6 taper rod mounting members 5 and 6 in the width direction.
Are juxtaposed. The openings 8 between the taper rods 1 arranged side by side in this way are openings for classifying the object W to be processed according to size, and a slit-like opening that widens from the input side I of the object W to the discharge side O. Has become. This opening is set by the interval P between the taper rods 1.

Then, taper rod mounting members 5 and 6 are provided on the respective upper connecting members 10 provided from the input side I to the discharge side O of the frame member 21 to form a screen surface. These taper rod mounting members 5 and 6 are
They are arranged in a step-like manner such that they are sequentially located downward from the input side I toward the discharge side O. That is, in a state in which the taper rods 1 are provided on all the upper connecting members 10, the taper rods 1 have a sieve surface in which they are arranged stepwise in a side view.

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 loading side to the third step is attached with the same small inclination angle θ, and the taper rod 1 from the fourth step is attached so that the inclination angle θ gradually increases, and the taper rod 1 is moved from the loading side to the ejection side. The inclination angle of the taper rod 1 is increased as it goes.

By varying the inclination angle of the taper rod 1 in this way, the composition of the object W to be processed is not constant, or the object W to be processed having a wide particle size range,
Normal sieving and specific gravity classification can be performed by one vibration sieving machine 20. For this specific gravity classification, discharge chutes 34, 35 are provided on the discharge side of the vibrating screener 20, and a separation gate 36 is provided between these discharge chutes 34, 35.

That is, by arranging the taper rod 1 in this way, the taper rod 1 at a small angle on the input side is sieved to remove the small object W which is an obstacle to the specific gravity classification, and the discharge side. The taper rod 1 whose angle increases as it goes to causes a difference in repulsive force depending on the specific gravity of the object to be processed W to cause a speed difference, and this speed difference causes a difference in the trajectory of the object to be processed W discharged from the upper part of the taper rod 1. As a result, the workpiece W on the sieve discharged from the vibration sieving machine 20 is dropped onto either of the discharge chutes 34, 35 for sending to the next step. That is, depending on the distance of the trajectory discharged from the vibrating screener 20, the discharge is performed to either the discharge chute 34 or 35. This classification position is the discharge chute 34,
It can be adjusted by a separation gate 36 provided between 35.

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 conveyors for carrying out, and 39 is a discharge chute under the sieve.

FIG. 6 is a vertical sectional view showing a separation gate in the sieving equipment of FIG. As shown, this vibrating screener 2
The separation gate 36 for separating the object W to be discharged from the No. 0 sieve is composed of a base plate 36a and a moving plate 36b slidable upward from the base plate 36a. The movable plate 36b is configured to be movable (movable up and down) within the range of the long hole 36c provided in the. 36d is a fixing bolt. This base plate 36a
The rotary shaft 36e at the lower end is rotatably attached to the separating portion of the discharge chutes 34, 35.

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 that separates the one that does not fly and the one that does not fly much. As a result, the objects W having different specific gravities can be classified by specific gravity and discharged from the separate discharge chutes 34 and 35.

According to the sieving equipment 40 configured as described above, the object W to be treated which is introduced from the introduction side I of the vibrating sieving machine 20.
The object W smaller than the opening 8 between the taper rods 1 drops downward while flowing on the taper rod 1 toward the discharge side O. At this time, the workpiece W falling from between the taper rods 1 drops downward while coming into line contact with the taper rod 1, so that clogging can be suppressed and sieving can be performed. Further, even when the object W to be treated contains water such as volcanic ash, it does not adhere to the mounting portion of the taper rod 1 due to the fluttering of the flexible cover 14 and flows down on the taper rod 1 provided in a stepwise manner. , Can be efficiently screened.

Moreover, the object W flowing down the stepped taper rod 1 gradually drops on the taper rod 1 whose inclination angle is gradually increased and causes a speed difference due to the difference in specific gravity. Therefore, the speed difference causes discharge from the vibrating screener 20. By adjusting the falling position of the processed object W to be removed at the position of the separation gate 36, the processed object W on the sieve discharged from the upper part of the taper rod 1 can be further classified by specific gravity.

Further, since the classification position can be easily changed by setting the height and the angle of the separation gate 36, the classification position can be easily divided according to the object W to be processed. .

In the above embodiment, the separation gate 3
Although the workpiece W on the sieve is divided into two types in 6 above, it may be divided into three or more types and is not limited to the above-described embodiment.

Further, the number of steps and the angle at which the taper rod 1 is provided may be appropriately set according to the object W to be processed, and is not limited to the above-mentioned embodiment.

Further, the above-described embodiment is an embodiment, and various modifications can be made without departing from the gist of the present invention, and the present invention is not limited to the above-described embodiment.

[0043]

The present invention is carried out in the form as described above and has the following effects.

Since the object to be processed passing between the taper rods passes through the taper rod almost in line contact, the object to be processed can be effectively prevented from being clogged between the taper rods, and a stable vibrating screener can be provided. Can be operated.

[Brief description of drawings]

FIG. 1 is a perspective view showing a taper rod mounting structure of a vibrating screener according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the taper rod mounting structure shown in FIG.

FIG. 3 is a plan view of the taper rod mounting structure shown in FIG.

FIG. 4 is a plan view of a vibrating screener having the taper rod mounting structure shown in FIG.

5 is a view showing an embodiment of a sieving equipment equipped with the vibrating screener shown in FIG. 4, and is a side view of a state in which a taper rod of the vibrating screener is seen through. FIG.

FIG. 6 is a vertical cross-sectional view showing a separation gate in the screen equipment of FIG.

[Explanation of symbols]

1 ... Taper rod 2 ... Mounting part 3 ... Tapered part 4 ... Tsubabe 5, 6 ... Taper rod mounting member 7 ... Mounting space 8 ... Opening 9 ... Fixing bolt 10 ... Upper connecting member 11 ... Opening groove 12 ... bolts 14 ... Flexible cover 15 ... Fixed cover 20 ... Vibration sifter 21 ... Frame member 22 ... Connection 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 belt 34, 35 ... Discharge chute 36 ... Separation gate 37, 38 ... Carry-out conveyor 39 ... Discharge chute 40 ... Sieve equipment W ... Object to be processed

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B07B 1/46 B07B 1/46 K

Claims (7)

[Claims] 1. A vibrating screener, wherein a rod for sieving is provided in a flow direction of an object to be processed of a screen body, and the rod is used to screen an object to be processed, wherein the rods are juxtaposed at predetermined intervals in a width direction of the screen body. The vibrating screener is characterized in that the rod is constituted by a round rod-shaped taper rod whose diameter is reduced at the tip. 2. The taper rods are arranged in a plurality of stages in the longitudinal direction of the sieve body, and the taper rods are arranged in a stepwise position which is sequentially located downward from the side of the object to be treated. Vibrating screener. 3. A flexible cover for covering an upper surface of the mounting portion of the taper rod is provided, and an object input side of the flexible cover is fixed to a sieve body and a discharge side is a free end. The vibrating screener according to claim 1 or 2. 4. The inclination angle of the stepped taper rods is set such that the taper rod located on the input side of the object to be processed is made small and the taper rod located on the discharge side of the object to be processed is made large. The vibrating screener according to any one of claims 1 to 3. 5. The vibrating screener according to claim 4, wherein the inclination angle of the taper rod is gradually increased from the taper rod located on the input side of the object to be processed to the taper rod located on the discharge side. 6. A plurality of discharge chutes are provided on the discharge side of the vibrating screener according to claim 4 or 5, for dividing the object to be treated on the screen discharged from the taper rod in the discharge direction, and the discharge is performed. A sieving facility characterized in that a separating gate for adjusting the dividing position of the object to be treated is provided between the chutes. 7. The distance between the upper end position of the separation gate and the discharge position of the object to be processed on the sieve discharged from the taper rod of the vibrating screener can be adjusted. Sieve equipment described.