JPH0985173A - Vibration screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform screening by one process and to prevent the breakage of screens of a second bed by arranging cushion plates for receiving materials that are slipped through screens of a first bed and feeding it to the screens of a second bed at positions just below grizzly bars. SOLUTION: A lot of grizzly bars 7 along the advancing direction are fixed on the upstream side and comb-like grizzly bar units 7U opened on the downstream side are arranged in plural stages in series with difference in level to form screens of a first bed 6. Below them, a lot of rod bars 14 along the advancing direction are fixed on the upstream side and are opened on the downstream side and comb-like rod bar units 14U at intervals smaller than those of the grizzly bars 7 are arranged in plural stages in series with difference in level to form screens of a second bed 13. Just below the grizzly bars 7, cushion plates 15b for receiving materials that are slipped through the screens of a first bed 6 and feeding it to the screens of a second bed 13 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inclined two-floor type vibrating and sieving apparatus for removing mud components and the like from quarrying stones, crushed concrete, etc.

[0002]

2. Description of the Related Art Conventionally, in order to manufacture aggregates for crushed stones and concrete, before transferring the rocks collected at the mining site to the crusher, vibration sieving is performed to remove fine particles and sediment contained in the collected rocks. The device is being used. For example, Japanese Patent Application Laid-Open No. 5-185033 discloses a one-bed type vibrating and sieving device in which two pairs of grizzly river units provided with a large number of grizzly rivers in parallel in the traveling direction are arranged inside a U-shaped frame with a step. Has been described.

Japanese Unexamined Patent Publication (Kokai) No. 3-262574 discloses a one-bed type vibrating and sieving apparatus in which the above-mentioned grizzly river units are arranged with five sets of steps.

[0004]

The above-mentioned prior arts have a plurality of stages of grizzly river units each having a large number of openings with an open tip and a diverging end.
The rocks are mainly transferred to the next step, and the mud component passes through the opening and drops downward. However, in addition to mud components, many small stones and crushed stones are mixed in this falling component,
These must be transferred again to another sieving device using a conveyor or the like for separation. For this reason, a plurality of types of sieving devices and a transfer device are required, which requires a large number of mechanical parts and requires a lot of man-hours for transportation and assembly, resulting in an increase in cost. Therefore, just below the first floor screen that has a plurality of stages of grizzly river units that have a large number of open-ended openings with the tip open as described above, a second floor screen in which the outer circumference of the wire mesh is stopped by a frame is arranged immediately below the vibration. A sieving device has been developed and put into practical use. According to this device, the components that have passed through the first floor screen are applied to the second floor screen, so that it is possible to separate crushed stones and mud. However, mud adheres to the frame at the lower end of the second floor screen and accumulates on the upstream side, which causes clogging and interrupts the work. There was a problem that the eye screen was damaged.

The present invention has been made in view of the above problems, and prevents clogging due to adhesion of mud and the like, and in one step, rocks of a certain size or larger, crushed rocks smaller than that, mud, fine stones, etc. An object of the present invention is to provide a vibrating and sieving device capable of continuously separating unnecessary components and preventing damage to the second floor screen.

[0006]

In order to achieve the above object, the present invention provides a vibrating and sieving apparatus in which a material is transferred by vibration, and the material is sieved in the transferring process. The first floor screen, in which the upstream side of the grizzly river is fixed and the downstream side is opened, and a plurality of stages of comb-shaped grizzly river units are arranged in series with steps, and at the lower position, upstream of many rod bars along the traveling direction. A second floor screen in which a plurality of stages of comb-shaped rod bar units having a gap smaller than the gap of the grizzly river with the side fixed and the downstream side opened are arranged in series with a step, and the position immediately below each of the grizzly rivers is provided. Provide a cushion plate that receives the material that slips through the first floor screen and drops it, and supplies it to the second floor screen. It is intended to mainly constitute the vibration sieving apparatus and said.

[0007]

[Function] Rocks containing unwanted components such as mud that has been quarried,
Before feeding the raw material consisting of crushed stone etc. from the upstream of the device of the present invention, the raw material slides on the grizzly river unit while rolling, and is fed to the next grizzly river unit, and finally it is an unnecessary component. It is collected as rocks, etc., which have been removed and have a size larger than a predetermined size. On the other hand, the raw material that has slipped through the opening of the grizzly river is once received by the cushion plate, and is supplied onto the rod bar unit without being deposited due to the flap action of the cushion plate. Here, unnecessary components such as mud components and fine stones with extremely small particle size fall below the opening of the rod bar, and crushed stones with large particle size slide down on the rod bar unit and are supplied to the next rod bar unit. Are collected as crushed stones of a predetermined size from which the above-mentioned unnecessary components have been removed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is a side sectional view showing an outline of a vibrating and sieving apparatus according to an embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a side view thereof. 4 is a plan view and a side view showing a part of a grizzly river unit of the same apparatus, and FIG. 5 is a plan view, a side view and a front view showing a part of a rod bar unit of the same apparatus. In the figure, 1a, 1
a is the left and right frames of the apparatus body 1, 2 is a bracket, 3 is
Is a main body support base, 4 is a main body support spring, and the main body 1 is supported by these to be swingable up and down. Reference numeral 5 denotes a vibration motor, which is fixed to the upper part of the main body in a pair of left and right. The first floor screen 6 is composed of a comb-shaped grizzly river unit 7U having five steps. Reference numeral 8 denotes five angle-shaped first floor screen mounting frames, which are frames 1a and 1
It is erected in a ladder shape with a predetermined space between a. Reference numeral 7 is a grizzly river, and a bracket 11 is fixedly attached to the lower part thereof.
Two pieces are welded to each of the short bar mounting frames 10 of the mold, and a predetermined number (15) of them are removably fixed in parallel to the first floor screen mounting frames 8 through the mounting frames 10 by fasteners 12. . The grizzly river 7 is tapered when seen in a plan view, and therefore, the grizzly river unit 7U is formed with a large number of opening portions 7a which are flared.

In FIGS. 1 and 5, reference numeral 13 denotes a second floor screen, which is composed of a comb-shaped rod bar unit 14U having four steps. Reference numeral 15 denotes four second floor screen mounting frames each having a substantially U-shaped cross section, which is composed of two long pieces 15a vertically provided obliquely downward and a cushion plate 15b formed integrally with the long pieces 15a. At a position directly below the grizzly river, the frames 1a, 1a are erected in a ladder shape at a predetermined interval. Reference numeral 14 is a rod bar composed of a large number of round bars. The fastener bar 1 is fastened to the holder 16 in a parallel state with an interval 14a narrower than the interval 7a of the grizzly river 7.
It is detachably sandwiched and fixed by 7. The holder 16 is fixed to the long piece 15a by a fastener 18.

Since the cushion plate 15b is formed integrally with the second floor screen mounting frame 15, the structure is simplified and advantageous, and adhesion of fine particles to the second floor screen mounting frame 15 is prevented. However, they are not necessarily integrated and may be provided separately above the second floor screen mounting frame 15.

The operation of the above apparatus will be described. When the vibration motor is started and the raw material consisting of rock, crushed stone or the like containing unnecessary components such as quarried mud and the like is supplied from the upstream side of the device of the present invention before being crushed, the raw material rolls and the grizzly river unit 7U It slides down and is supplied to the next Grizz River unit 7U. Meanwhile, Grizz River 7
The raw material that has slipped through the opening 7a is once received by the cushion plate 15b and then supplied onto the rod bar 14, so that the impact is softened and damage to the rod bar 14 is avoided. Here, the mud component and fine stones having an extremely small grain size fall below the opening of the rod bar 14, and the crushed stones of a predetermined grain size slide down on the rod bar unit 14U and are supplied to the next rod bar unit 14U.
Since each of the grizzly river unit 7U and the rod bar unit 14U is provided in a plurality of stages, unnecessary components such as mud and fine stones present in the rough stone are efficiently removed by sieving. At the same time, crushed stones smaller than the gap of the grizzly river 7 and large rocks are efficiently separated and collected.

FIG. 6 is a side view and a front view showing a part of a rod bar unit according to another embodiment. 1 in the figure
Reference numeral 9 denotes an elastic holder made of rubber or the like, which is embedded in a holder case 20 having an insertion round hole 19a of the rod bar 14. The holder case 20 is detachably fixed to the second floor screen mounting frame 15 with a fastener 21. According to this embodiment, chatter vibration (secondary vibration) is generated, so that even a mud component having a relatively large amount of water and easily adhering is shaken off, and adhesion and generation are prevented.

FIG. 7 is a side view showing a part of a rod bar unit according to another embodiment. In the figure, reference numeral 22 denotes an elastic sheet such as a rubber plate, which is a cushion plate 15b.
It is mounted on the upper part and is fixed on the upstream side by a fastener 23. Therefore, the elastic sheet 22 causes a flap action due to secondary vibration on the cushion plate, so that adhesion of fine particles such as mud containing a large amount of water is prevented. If there is no elastic sheet, fine particles such as mud containing a large amount of water adhere to and grow on the cushion plate 15b, and the integrated solid content progresses to the screen opening, reducing the screen area and lowering the sieving efficiency. However, the elastic sheet eliminates this problem. For this elastic sheet, an old belt that has become unnecessary can be used.

The grizzly river 7 of the first floor screen is not worn out on average, but is quickly damaged from the central grizzly river, but in the above embodiment, it is divided into two units, and each unit is divided into the first floor screen. Since it is removably fixed to the mounting frame 8 by the fastener 12, only the damaged grizz river needs to be replaced, which is economical. Further, according to the above-described embodiment, since the opening of the grizz river 7 is vertically long in a divergent shape and the downstream side is open, the throughput is large and there is no clogging. Further, since the size of the opening is much larger than the size of the opening of the lower rod bar unit, it is possible to exert a large processing capacity as a rough sieve of rough stone.

Since the opening of the second floor screen is vertically long and the downstream side is open, the throughput is large and there is no clogging. A round bar is advantageous as the shape of the rod bar 14, but a square bar may be used. Further, as the material, it is preferable to use wear-resistant special steel. As the material of the holder 16,
When processing a large amount of rough stone that is relatively dry and difficult to adhere, it is advantageous to use carbon steel because the rod bar 14 can be firmly fixed and can withstand a large layer thickness. The damaged rod bar 14 is economical because it has a simple rod structure and can be easily attached and detached and partially replaced.

[0016]

Since the present invention is constructed as described above, the following effects can be obtained.

In the first floor screen, a plurality of grizzly river units along the traveling direction are fixed in the upstream side and the downstream side is opened, and a comb-shaped grizzly river unit is arranged in a plurality of stages with steps, so that the throughput is increased. There are not many clogging. Since the gap between the grizzly rivers is much larger than the gap between the lower rod bar units, it is possible to exert a large processing ability as a rough sieve for rough stones.

Further, the second floor screen has a plurality of stepped comb-shaped rod bar units having a plurality of rod bars fixed in the advancing direction on the upstream side and open on the downstream side at a position below the first floor screen. Since they are arranged in series, the throughput is large and there is no clogging. Since the interval between the rod bars is smaller than the interval between the upper grizzly rivers, it is possible to efficiently collect crushed stones of a certain size that have passed through the first floor screen.

Further, at a position directly below each of the grizzly rivers,
By disposing a cushion plate that receives the material that slips through and falls from the first floor screen and supplies it to the second floor screen, the crushed stone raw material that has slipped through the opening of the grizzly river is once received by the cushion plate, Since it is supplied onto the rod bar, the impact is softened, damage to the rod bar can be avoided, and adhesion and formation of fine particles on the second floor screen mounting frame is prevented.

Further, according to the construction in which the upstream side is fixed to the upper part of the cushion plate and the elastic sheet capable of flap action by vibration is provided, this elastic sheet causes a flap action by secondary vibration on the cushion plate, so that a lot of water is contained. Adhesion of fine particles such as mud is prevented. Therefore, fine particles such as mud adhere to and grow on the cushion plate, and the integrated solid content does not progress to the opening of the screen, reducing the area of the screen and reducing the sieving efficiency.

Further, according to the construction in which the grizzly rib of the grizzly-river unit is divided into one or more units, and each unit is detachably fixed to the mounting frame, the abrasion is originally great and the degree of abrasion is different. It is economical because it is not necessary to change grizzly rivers all at once and only damaged grizzly rivers need to be replaced for each unit.

Further, according to the structure in which the rod bar is detachably fixed to the mounting frame via the elastic holder, chatter vibration (secondary vibration) is generated during operation, so that the mud component which is relatively water-rich and easily adheres thereto. Even then, adhesion and generation are prevented. The damaged rod bar is economical because it has a simple rod structure and can be easily attached and detached and partially replaced.

[Brief description of drawings]

FIG. 1 is a side sectional view of a vibrating and sieving apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of a vibration sieving apparatus according to an embodiment of the present invention.

FIG. 3 is a side view of a vibration sieving apparatus according to an embodiment of the present invention.

4A and 4B are a plan view and a side view showing a part of a grizzly river unit of the same apparatus.

FIG. 5 is a plan view, a side view and a front view showing a part of a rod bar unit of the same apparatus.

FIG. 6 is a side view and a front view showing a part of a rod bar unit according to another embodiment of the present invention.

FIG. 7 is a side view showing a part of a rod bar unit according to another embodiment of the present invention.

[Explanation of symbols]

 1 Device main body 1a Left and right frames 2 Brackets 3 Main body support base 4 Main body support springs 5 Vibration motor 6 First floor screen 7 Grizz river 7U Grizz river unit 8 First floor screen mounting frame 10 Bar mounting frame 11 Bracket 12 Fastener 13 Two floors Eye screen 14 Rod bar 14U Rod bar unit 15 Second floor screen mounting frame 15a Long piece 15b Cushion plate 16 Holder 17 Fastener 18 Fastener 19 Elastic holder 20 Holder case 21 Fastener 22 Elastic sheet 23 Fastener

Claims (4)

[Claims] 1. A vibrating and sieving device for transferring material by vibration and sieving the material in the transfer process, wherein a comb-like shape in which the upstream side of a large number of grizzly rivers along the traveling direction is fixed and the downstream side is opened. The first floor screen in which a plurality of stages of grizzly river units are arranged in series with a step, and at the lower position thereof, the upstream side of a number of rod bars along the traveling direction are fixed and the downstream side is opened to be smaller than the interval of the grizzly rivers. A second floor screen in which a plurality of stages of comb-shaped rod bar units having intervals are arranged in series with a step, and is provided directly below the grizzly rivers.
A vibrating and sieving apparatus comprising a cushion plate for receiving a material that has slipped through the first floor screen and dropping it, and supplying the material to the second floor screen. 2. The vibrating and sieving apparatus according to claim 1, further comprising an elastic sheet fixed to an upper portion of the cushion plate on the upstream side and capable of flap action by vibration. 3. The vibration sieving apparatus according to claim 1, wherein the grizzly river of the grizzly unit is divided into one or more units, and each unit is detachably fixed to a mounting frame. 4. The rod bar is detachably fixed to a mounting frame via an elastic holder.
Vibration sieving device as described.