JPH0230063Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a screen for sieving lumps such as iron ore, crushed stone, coke, etc. into a predetermined particle size.

[Conventional technology]

Screens used in vibrating sieves include punched metal mesh, which is made by punching circular, oval, square, or rectangular holes in various arrangements in a steel plate, or steel wires with various cross sections woven into plain weave, flat top weave, etc. There are also woven nets and wave screens, in which wavy wires are arranged alternately without crossing each other.

Furthermore, a mesh called a rubber screen is also used, which is made by regularly punching square or rectangular holes in a rubber belt and placing steel cords at regular intervals to provide strength and tension.

[Problem that the invention attempts to solve]

However, for example, in the structure of conventional woven nets, the vertical lines and horizontal lines are knitted in a completely fixed state, and this is fixed tightly to the support frame, which causes the net to vibrate together with the main body. . For this reason,
There was a problem that the secondary vibration necessary for sieving could not be obtained and clogging easily occurred.

Also, when fixing both sides of the net to the support frame, tension is applied to the horizontal lines to prevent the net from loosening, but if the tension is large,
There is also the problem that secondary vibration of the mesh cannot be obtained, and particles stuck in the mesh cannot fall out, causing clogging.

This invention solves these conventional problems and
It is an object of the present invention to provide a vibrating screen having a structure that easily generates secondary vibrations.

[Means for solving problems]

In order to achieve this purpose, the vibrating sieve screen of the present invention has large spacers with a high height and small spacers with a low height arranged alternately at a predetermined pitch in a vertical line.
A plurality of vertical lines are arranged so that the large spacer and the small spacer are adjacent to each other in parallel vertical lines, and a horizontal line group consisting of a plurality of horizontal lines is stretched above or below the vertical line group. , and the horizontal line and the large spacer are in contact with each other, and a space is formed between the horizontal line and the small spacer.

[Effect]

The vibrating sieve screen of the present invention is a three-dimensional structure in which a group of horizontal lines is arranged above or below a group of vertical lines with height differences depending on spacers, and spaces are alternately provided between large and small spacers and the group of horizontal lines. It has a similar structure. Therefore, a gap is created between the horizontal line group and the small spacer. While continuously feeding the particles to be sieved onto this vibrating sieve screen, a vibrator applies vibration to the screen. When particles on the screen try to get stuck in the mesh formed by vertical lines and horizontal lines, the horizontal lines alternately have gaps in the height direction with respect to the vertical lines. , a secondary vibration is generated which has a higher frequency than the primary vibration provided by the vibrator. As a result, the particles that are stuck in the mesh can be easily removed from the mesh, and the sieve efficiency will not be reduced due to clogging.

〔Example〕

Hereinafter, the present invention will be specifically explained based on embodiments shown in the drawings.

FIG. 1 is a perspective view showing an embodiment of a vibrating screen according to the present invention, and FIG. 2 is a sectional view of the screen attached to a vibrator.

In FIG. 1, 1 is a vertical line made of synthetic resin-coated steel wire, etc., and 2 is a horizontal line made of a material such as urethane wire or urethane wire with steel wire. Large spacers 3 made of urethane resin with a high height and small spacers 4 with a low height are fixed to the vertical lines 1 alternately at predetermined pitches by heat fixation, and the large spacers 3 between adjacent vertical lines 1 and small spacers 4 are arranged alternately. Horizontal lines 2 indicate supports 5 at both ends of the screen.
(Only one of them is shown in FIG. 1) is fixedly stretched between them, and the portion where the horizontal line 2 and the large spacer 3 are in contact is also fixed by welding. FIG. 2 shows this screen attached to the frame 6 of the vibrator main body. In the figure, 7 is a support frame, 8 is a mounting hook, and 9 is a fixing bolt.

As shown in FIG. 2, the horizontal line 2 and the large spacer 3 are in close contact with each other, but a gap is formed between the horizontal line 2 and the small spacer 4. This gap is preferably equal to or 1/2 the wire diameter, for example. The pitch of the vertical lines 1 and the pitch of the horizontal lines 2 are, for example, 10 mm to 50 mm.

When the screen configured in this way is attached to a vibrator and vibrated, in addition to the vibration frequency of the vibrator, that is, the primary vibration, the horizontal line 2 has a secondary vibration due to the gap between the horizontal line 2 and the small spacer 4. Next vibration is more likely to occur. Due to this secondary vibration, vertical line 1
Particles stuck in the mesh formed by the horizontal lines 2 and 2 are sieved out from the mesh, making clogging less likely to occur.

In this embodiment, the large and small spacers are attached to the vertical lines, but they may be attached to the horizontal lines.

[Effect of idea]

As explained above, in the present invention, the horizontal lines are arranged above or below the large and small spacers so that a gap is created between the vertical lines and the horizontal lines. Due to the gaps formed by the group of horizontal lines and the small spacers, secondary vibrations are likely to occur in the horizontal lines, and the vibrations can sieve out particulate matter stuck in the mesh. Therefore, according to the present invention, clogging of the mesh of the vibrating sieve screen can be effectively prevented and sieving work can be carried out efficiently.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is an enlarged view showing how it is attached to a vibrator. 1: Vertical line, 2: Horizontal line, 3: Large spacer, 4: Small spacer, 5: Support body, 6: Frame, 7: Support frame, 8: Mounting hook, 9: Fixing bolt.

Claims (1)

[Scope of utility model registration request] Large spacers with a high height and small spacers with a low height are alternately provided at a predetermined pitch on the vertical lines, and a plurality of vertical lines are provided so that the large spacers and small spacers are adjacent to each other between the parallel vertical lines. Arrange and
A horizontal line group consisting of a plurality of horizontal lines is stretched above or below the vertical line group, and a space is formed between the horizontal line and the small spacer so that the horizontal line and the large spacer are in contact with each other. A screen for a vibrating sieve, characterized in that it is configured as follows.