JPH0448865Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improved structure of a sieve screen used in a vibrating sieve device.

[Conventional technology]

A so-called multi-stage system in which vertical cylindrical sieve frames are stacked in multiple stages, a sieve screen is interposed between the sieve frames above and below the frames, and the sieve frames and sieve screens are vibrated to sieve the powder and granules. A vibrating sieve device is disclosed, for example, in Japanese Utility Model Publication No. 147/1983.

The sieve screen used in this conventional device is a circular mesh body 101 made of wire mesh, as shown in FIG.
, a vertical edge 102 formed by bending the peripheral edge of the net body 101 at right angles, and this vertical edge 102
It consists of a band-shaped inner ring 103 fixed to the inner periphery of the inner ring 103.

[The problem that the idea aims to solve]

In the conventional sieve screen described above, since the vertical edges 102 are exposed to the outside, the ends of the wires forming the screen body 101 are likely to come off the inner ring 103 and protrude like burrs. If the wire protrudes like a burr like this, it is dangerous because there is a risk of injuring your hands when cleaning or replacing the sieve screen, and it is also difficult to clean, making cleaning work difficult. Become. Additionally, cleaning tools (for example, brushes) were easily damaged.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention consists of a circular net made of wire mesh or a perforated plate, a vertical edge formed by bending the periphery of the net at right angles, and a vertical edge sandwiched between the circular net and the perforated plate. A band-shaped inner ring and an outer ring provided on the inner and outer peripheries and integrated by welding to the vertical edges, and a resin coating part that covers the entire outer periphery of the inner ring and the outer ring. The present invention provides a sieve screen for a vibrating sieve device comprising:

[Effect]

Since the vertical edge of the sieve screen is sandwiched between the inner ring and the outer ring, and the entire outer periphery of the inner ring and outer ring is covered with the coating portion, the wires and the like on the vertical edge do not protrude like burrs.

This improves the safety in handling the sieve screen.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing a part of a multi-stage vibrating sieve device A in cross section. Cylindrical base 1
is permanently erected on the floor of the structure. Several coil springs 2, 2, . . . are arranged at regular intervals on the upper surface of this base 1. A vibrating sieve body 3 is provided above the coil springs 2, 2, . A vibration device 5 is attached to the lower surface of the support wall 4. The vibration device 5 has an electric motor 6 fixed vertically with a mounting arm 7, and a weight 9 attached to an eccentric position of a rotary shaft 8 of the electric motor 6 which projects upward and downward.

On the other hand, the sieve frames 3a, 3b, 3c have flanges 10, 10, 10 respectively formed on the outer periphery of the opening on the upper surface, and skirts on the outer periphery of the opening on the lower surface of the upper and middle sieve frames 3b, 3c. A flange 12, 12 having a portion 11 is formed, respectively. Then, the flanges 10, 12 of the overlapping part of the upper and middle sieve frames 3b, 3c and the overlapping part of the middle and lower sieve frames 3a, 3b.
A sieve screen 13, a porous ball tray 14, and a packing 15 are interposed in between. The ball tray 14 is for receiving a large number of balls 16, 16..., and by vibrating the ball tray 14, the balls 16, 16, etc. are made to jump and hit the lower surface of the sieve screen 13, thereby causing the sieve screen to 13 from clogging.

In addition, the vibrating sieve device A includes a lid 17 with an open top that covers the top of the opening of the upper sieve frame 3c, and an outlet 1 that protrudes from the side surface of each sieve frame 3a, 3b, and 3c.
8, 18, 18, and is attached between the flanges 10 and 12 at the overlapping part of the upper sieve frame 3c and the middle sieve frame 3b, and receives the powder and granular material sieved from the upper sieve screen 13. It consists of a funnel body 19 that guides to the center of the lower sieve screen 13, and a screw type clamp 20 that clamps the flanges 10 and 12 between them.

The vibrating sieve device A has the above-described configuration, and when powder and granules are introduced through the opening of the lid 17 and the electric motor 6 of the vibrating device 5 is driven, the coil springs 2 and 2 are moved by the rotational action of the weight 9. The entire vibrating sieve body 3 is vibrated through the sieve nets 13, 13 to be sieved.

Thus, the first sieve screen 13 includes a circular mesh body 21 made of a wire mesh or a perforated plate, and a vertical edge 21a formed by bending the peripheral edge of the mesh body 21 at right angles.
A band-shaped inner ring 22a and an outer ring 22b are provided on the inner and outer peripheries of the vertical edge 21a so as to sandwich the vertical edge 21a and are integrated with the vertical edge 21a by spot welding. It consists of a resin coating part 23 that covers the entire outer periphery of the ring 22b. The resin constituting this coating portion 23 is, for example, nylon resin or rubber.

[Effect of idea]

As described above, according to the present invention, the vertical edge of the sieve screen is sandwiched between the inner ring and the outer ring, and the entire outer periphery of the inner ring and outer ring is covered with the coating part, so that the vertical edge of the sieve screen is sandwiched between the inner ring and the outer ring. Wires and the like do not protrude like burrs, so cleaning and replacing the sieve screen can be performed safely and quickly.

In addition, by sandwiching the vertical edge between the inner ring and the outer ring, and covering the entire outer periphery with the coating, the synergistic effect of increasing the strength of the sieve screen and the rust prevention effect of the coating is achieved. The durability of the sieve screen is dramatically improved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the vibrating sieve device, partially shown in cross section, and FIG.
The figure is a partially enlarged cross-sectional view showing the overlapping part of the sieve frame.
The figure is a perspective view of a sieve screen, FIG. 4 is a partially enlarged sectional view showing the main part of the sieve screen, and FIG. 5 is a partially enlarged sectional view of the main part showing a conventional sieve screen. 13... Sieve screen, 21... Net body, 21a... Vertical edge, 22a... Inner ring, 22b... Outer ring, 23... Coating portion, A... Vibrating sieve device.

Claims (1)

[Scope of Claim for Utility Model Registration] A circular net made of wire mesh or perforated plate, a vertical edge formed by bending the periphery of the net at right angles, and Consists of band-shaped inner and outer rings provided on the inner and outer peripheries and integrated by welding to the vertical edges, and a resin coating that covers the entire outer periphery of the inner and outer rings. A sieve screen for a vibrating sieve device characterized by: