JPH0714506B2 - Vibrating screener - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a screen mesh stretched around a frame and is connected to a movable part of a vibrator disposed above the frame, and the movable part is used for the above-mentioned screen mesh. The present invention relates to a vibrating screener that vibrates.

[Conventional technology and its problems]

FIG. 5 shows a conventional vibrating screener, which is shown by (50) as a whole, and a screen (3) is stretched around a substantially rectangular frame (60). A plurality of vibrators (120) are fixed to the lid member (4) that covers them. And the rod (61) as a movable part of these vibrators (120) is being fixed to the above-mentioned screen (3). In the frame body (60), the transfer surface (62) below the screen (3) is a transfer section for the undersize material, which communicates with the undersize discharge port (6). The material transferred on the screen, that is, on the screen (3) communicates with the on-screen discharge port (5). And the frame (6
A sieve material supply port (11) is formed at the left end of (0). The frame body (60) is supported on the ground by the coil springs (8) and (9). Such a vibrating screener (50) is widely known as a so-called vibrating impact type vibrating screener, but the frame body (60) as a whole is inclined downward in the transfer direction of the screen material. . Therefore, the screen material supplied from the supply port (11) is guided to the end of the screen (3), and is transferred to the right in the figure by the gravity action due to the downward inclination. The screen (3) is partially vibrated by the vibration of the vibrating machine (120), so that the screen can be efficiently screened while the screen material is being transferred by gravity. The sieved material moves to the right along the transfer surface (62) of the frame body (60) and is discharged to the outside through the discharge port (6).
The sieve top is discharged to the outside through the discharge port (5).

The conventional vibrating screener (50) is configured as described above, but the frame body (60) as a whole is largely inclined downward in the transfer direction to give a desired transfer speed. The larger this angle, the higher the transfer speed, but as clearly shown in FIG. 5, the height H from the supply port (11) to the ground becomes larger. As a result, in each factory where various restrictions are imposed on the space, a pit is dug as the case may be, and the coil springs (8) and (9) are arranged in this pit. The costs for installation were therefore increased in this case.

[Problems to be solved by the invention]

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vibrating screener that can reduce the height of installation and can further improve the screen efficiency more than ever before.

[Means for solving problems]

The above object is to connect the screen mesh stretched over the frame to the movable part of the vibrator disposed above the screen and fixed to the frame, and to move the screen by the movable part. In a vibrating sieving machine adapted to vibrate, an electromagnet, an armature vertically spaced from the armature, a pair of leaf spring mounting members fixed vertically to the armature, and a horizontal member for the electromagnet. A pair of protrusions fixed to the plate spring, a pair of leaf springs fixed to the protrusion at the central portion and fixed to the leaf spring attachment member at both ends, and a distance smaller than the gap in the vertical direction. An armature or a plate-shaped urethane rubber fixed to the protruding portion is provided, and the movable portion is fixed to either one of the electromagnet and the armature, and the other is fixed to the frame body, The frame is supported horizontally on the ground by vibration-proof coil springs. Mounting the vibration motor by the angular tilt is achieved by a vibrating screen machine, characterized in that so as to convey the material on the sieve screen with a linear vibration by driving the vibrating motor.

[Action]

The frame body as a whole linearly vibrates in an oblique direction by the pair of vibrating electric motors, and the material on the screen is conveyed by this vibration.
During this process, the movable part periodically pushes the sieve mesh against each other, and it is possible to efficiently perform the sieving even with a material that has been difficult to sieve in the past.

Further, although the frame body is horizontal, a sufficient material conveying force can be obtained, and the height of the entire vibrating screener can be made much lower than in the conventional case.

〔Example〕

1 and 2 show the whole of the vibrating screener of this embodiment, the vibrating screener is shown as a whole by (1), and its frame (2) has a substantially rectangular parallelepiped shape and a mesh screen. (3) 'is installed inside. A lid member (4) 'is attached to the frame body (2) so as to cover it. The frame body (2) is formed with a sieve outlet (5) ′ and a sieve outlet (6) ′, and the sieve material dropped from the sieve mesh (3) ′ is transferred to the transfer bed (41). ), And is discharged to the outside through the below-sieving discharge port (6) '. A sieve material supply port (11) is formed at the left end of the frame body (2). On the bottom surface of the frame (2), a pair of left and right vibration drive mounting plates or blades (7)
(7) is fixed, and (10) and (10) are fixed to the pair of vibration motors. This Vibration Motor (10)
(10) has a known structure, and the rotating shaft (10b) is fixed so as to extend in a direction perpendicular to a desired vibration direction. An unbalanced weight (10a) is fixed to this drive shaft (10b).

By driving the pair of vibration motors (10), (10), linear vibration is generated in the direction of arrow a as shown in the vanes (7) (7). The frame body (2) is supported on the ground by coil springs (8) '(9)'.
As a result, the frame body (2) is arranged horizontally. A plurality of electromagnetic vibrators (12) are fixed on the cover member (4) 'in an arrangement as shown in FIG. Third about this
This will be described below with reference to FIGS.

The cup-shaped frame (20) of the electromagnetic vibrator (12) is fixed to the lid member (4) 'by its flange portion (20a) and bolts (42). The thrust-type vibration drive unit according to the present invention is built in this. A hole (25) is formed in the lid member (4) ', a drive rod (23) as a movable portion is inserted through the hole (25), and a lower end portion thereof is threaded to form a plate member (26) ( It is fixed to the screen (3) 'by clamping the screen (3)' with 27) and tightening the nut (28). Further, the portion of the rod (23) that passes through the hole (25) is covered with a rubber dust cover (24).

An E-shaped electromagnet (21) whose shape is clearly shown in FIG. 4 is fixed to the upper end of the drive rod (23). A coil (30) is fitted around the central magnetic pole (21a) and is fixed to an armature (29). The armature (29) is fixed to the frame (20) by a bolt (43). It is fixed.

The armature (29) has two pairs of leaf spring mounting posts (44a) (44
a), (44b), (44b) (see FIG. 3) are fixed, and both end portions (31) of the leaf springs (31) (31) are fixed to the lower end portion.
a) (31a), (31b) (31b) are bolts (46a) (46a),
It is fixed by (46b) and (46b). The base (21b) of the E-type electromagnet (21) is attached to the upper end of the drive rod (23).
It is screwed to and fixed by being stopped by a nut (47). Then, on both side walls of the electromagnet (21), projecting portions (32a) (32b) as support thrusting portions are integrally formed, and the magnetic pole (22) and the armature (29) of the electromagnet (21) are formed on this. )
The urethane rubber (34a) (34b) is attached to the mounting members (35a) (35b) with a gap S smaller than the gap g formed between
It is attached to. The urethane rubber (34a) (34b) mounting members (35a) (35b) are attached to the nut (5) via the screw member (50).
It is fixed to the armature (29) by 1). Further, the projecting portions (32a) (32b) sandwich the central portions of the leaf springs (31) (31) with the mounting plates (33a) (33b), and are fixed thereto. The embodiment of the present invention is configured as described above. Next, this operation will be described.

A plurality of electromagnetic vibrators (12) as shown in FIG. 3 and FIG. 4 are arranged on the lid (4) ′ as shown in FIG. Coil in (3
When alternating current is applied to (0), the electromagnet (21) and armature (29)
An alternating magnetic attraction force is generated between and, which causes the drive rod (23) to vibrate vertically. As a result, the sieve net (3) 'is directly vibrated in each part, but the urethane rubbers (34a) (34b) and the impact parts (32a) (32b) facing each other with a distance smaller than the gap g. ), Vibrates the screen (3) 'with an impact force and imparts an impact force. Therefore, even the under-sieving material, which is very difficult to sieve, can efficiently pass through the mesh due to the impact force. Further, a linear vibration force in the a direction is applied to the frame body (2) by the pair of vibration motors (10) and (10) by the rotation of the unbalanced weight (10a) by driving the vibration motors (10) and (10). , Therefore the sieve screen (3) 'and the transfer surface (4
1) The upper and lower sieve materials are transferred to the right in FIG. 1 by a jumping motion by vibration and discharged to the discharge ports (5) ′ and (6) ′ to the outside.

The embodiment of the present invention performs the above-mentioned actions,
It has the following effects.

In this embodiment, as shown in FIG. 1, a pair of vibration motors (10) and (10) are used.
A linear vibration force in the direction is applied, and a transfer force by vibration is applied to the material on the screen (3) 'and the transfer surface (41). Therefore, in the past, the downward inclination was used to rely on the transfer force of the gravitational action, but in this embodiment, the linear vibration in the a direction causes
Further, by appropriately selecting this size, the under-sieving material and the sieving material can be transferred at a desired transfer speed.

Furthermore, according to this embodiment, the urethane rubber (34a) (34b) and the pair of impact portions (32a) (32b) formed on the electromagnet (21).
Due to the periodical impact with the, the impact force is transmitted to each part of the sieve mesh (3) 'via the drive rod (23), and the material that is difficult to sieve can be efficiently passed under the sieve. Further, since the vibrating motors (10) and (10) can utilize the vibration carrying force, they can be arranged horizontally, and the height of the entire apparatus can be made much lower than in the conventional case. Therefore, it can be installed without problems even in a building whose height is limited.

Although the embodiments of the present invention have been described above, of course, various modifications can be made based on the technical idea of the present invention.

For example, in the above-described embodiment, in the electromagnetic vibrator (12), the coil (30) is fixed to the armature (29), the E-type electromagnet (21) is arranged with a gap g in the armature (29), This was attached to the drive rod (23) as a movable part,
This may be reversed so that the armature (29) is fixed to the drive rod (23) and the E-shaped electromagnet (21) is fixed to the frame (20). That is, in this case, the armature (29) vibrates.

Further, although the E-type electromagnet (21) is used in the above-mentioned embodiments, of course, instead of this, a conventionally known electromagnet, for example, U
Type electromagnets may be used. Further, although the urethane rubbers (34a) and (34b) are used as the hitting portion, the hitting force can be adjusted (for example, by changing the size, thickness, or area of the void S).

Further, in the above embodiments, the pair of blades (7) and (7) are attached to the lower side of the frame body (2), and the vibration motors (10) and (1) are attached thereto.
0) was fixed, but instead of this, the frame (2)
A pair of vibration motors may be fixed to the rear end face, that is, the left end face in FIG.

〔The invention's effect〕

As described above, according to the vibrating screener of the present invention, it is possible to further reduce the height and further improve the screening efficiency.

[Brief description of drawings]

FIG. 1 is a side sectional view of a vibrating screener according to an embodiment of the present invention, FIG. 2 is a partially cutaway plan view, FIG. 3 is an enlarged sectional view of an electromagnetic vibrator in FIG. 1, and FIG. 4 is FIG. 5 is a side sectional view of a vibrating screener of a conventional example. In the figure, (3) '... sieve mesh (12) ... vibrator (21) ... electromagnet (23) ... drive rod (29) ... armature (32a) (32b) ... protrusion ( 34a) (34b) ... urethane rubber

Claims (1)

[Claims] 1. A screen mesh stretched around a frame is connected to a movable part of a vibrator which is arranged above the screen and fixed to the frame, and the screen is moved by the movable part. In a vibrating sieving machine adapted to vibrate, an electromagnet, an armature vertically spaced from the armature, a pair of leaf spring mounting members fixed vertically to the armature, and a horizontal member for the electromagnet. A pair of protrusions fixed to, and the central portion fixed to the protrusions,
A pair of leaf springs fixed to the leaf spring mounting member at both ends, and a plate-shaped urethane rubber fixed to the armature or the protrusion at a distance smaller than the gap in the vertical direction, The movable part is fixed to either one of the electromagnet and the armature, and the other is fixed to the frame body, and the frame body is supported horizontally on the ground by a coil spring for vibration isolation, and a pair of vibration motors. Is installed with being tilted at the same angle, and the material on the sieve mesh is conveyed by linear vibration by driving the vibrating electric motor.