JPS5847237B2 - Vibrating sieve clogging prevention device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for preventing clogging of a vibrating sieve, which is configured to strike the sieve surface with a weight.

Vibrating sieves are used in various fields for sorting powder or granular materials, but especially when processing highly viscous materials, the sieves tend to become clogged. The processing efficiency will be significantly reduced.

For example, in the preparation of agricultural land, etc., a topsoil preparation machine using a vibrating sieve is used to remove gravel, tree roots, etc. mixed in the topsoil.

When using this topsoil preparation machine to create clay land, for example, clay adheres to the mesh of the vibrating sieve, clogging it and reducing sieving efficiency, so the adhering clay is often broken down with a hammer, etc. Otherwise, it must be washed off with water, etc., which is extremely inefficient.

In addition, in the case of viscous and highly moist soil,
There are some drawbacks, such as the fact that the core is made of stones, etc., and the resulting sludge is ejected together with the stones, making it impossible to effectively recover the product.

The present invention has been made to solve the above-mentioned difficulties, and its purpose is to provide a vibrating screen that is easy to manufacture with a simple device, and that can reliably prevent clogging and increase work efficiency. clogging of a vibrating sieve, characterized in that a plurality of weights are suspended from above by a hanging member in such a position that the weights bounce on the sieve surface and strike the sieve surface due to the vibration of the vibrating sieve. To provide a prevention device.

Hereinafter, the present invention will be explained in detail with reference to the drawings, taking as an example a case where the present invention is used in a topsoil reclamation machine.

Reference numeral 10 denotes a topsoil preparation machine, which includes a hopper 14 for charging soil and stones, etc. on a chassis 12, a vibrating screen 18 equipped with a clogging prevention device 16 according to the present invention, and a conveyor 20 for discharging gravel, etc.
are arranged in this order.

A connecting tool 22 is provided at the tip of the chassis 12, and the topsoil making machine 10 is connected to the rear end of a stone scraper (not shown) such as a tractor shovel via this connecting tool 22, so that it can be towed and moved. It is installed separately from the dirt and stone scraper at the work site, and the dirt and stone scraper scoops up surrounding dirt and stones and throws it into the hopper.

The soil and stone thrown into the hopper 14 by the soil and rock scraper slides down inside the hopper 14 and is carried onto the sieve surface 24 of the vibrating sieve 18, and vibration is applied to the vibrating sieve 18 to sieve out good quality soil. The dropped tree roots and the like are further conveyed and fall onto the conveyor 20, where they are taken out.

The vibrating sieve 18 is mounted so as to be movable up and down on a plurality of coil springs 26 fixed on the chassis 12, and is positioned so that its mesh-like sieve surface 24 is substantially horizontal.

Reference numeral 28 denotes a known vibrator, which is driven by a drive motor 30 to move the vibrating sieve 18 to the sieve surface 24 by approximately 1
A linear vibration of 5° (900 to 1200 times/min) is applied to sieve the soil and stones conveyed to the vibrating sieve 18, allowing high-quality topsoil to fall downward, and boulders and tree roots remaining on the sieve surface 24 are removed by inertial force. It is conveyed to the rear of the sieve surface 24 and dropped onto the conveyor 20.

A plurality of hanging members 34 such as coil springs, wires, chains, or rubber strings are fixed at their upper ends to the fixing rods 32 disposed above the sieve surface 24 of the vibrating sieve 18. A weight 36 made of metal or the like is suspended from the lower end of each of the hanging members 34.

The clogging prevention device 1 includes the hanging member 34 and the weight 36.
form 6.

The shape of the weight 36 may be any shape such as a weight shape, a spherical shape, or a prismatic shape.

The weights 36 may be arranged in a single row on the sieve surface 24 along its length or width, but they may be distributed almost uniformly over the entire surface of the sieve surface 24 in a staggered or random manner. It is preferable that the

Further, the position of the weight 36 may be in contact with the sieve surface 24 or may be located slightly above the sieve surface 24, and as the sieve surface 24 vibrates, the weight 36
It is sufficient that the sieve surface 24 is in a position where it hits the sieve surface 24.

Since the present invention is configured as described above, the vibration of the vibrating screen (900 to 12
00 times/min), the weight bounces violently on the sieve surface and strikes the sieve surface, giving a slight vibration to the sieve surface and peeling off the soil clods attached to the sieve surface.

It also has the effect of crashing by directly hitting the soil or gravel attached to gravel, etc.

Although the clogging prevention device has been described above using a topsoil construction machine as an example, it is not limited to only the topsoil construction machine, and it goes without saying that the vibration sieve is not limited to a horizontal type but can also be applied to an inclined type.

As described above, the apparatus for preventing clogging of a vibrating sieve according to the present invention not only prevents adhesion to the mesh of the sieve and peels off adhering substances, but also directly crushes lumps of the material to be processed. This results in extremely high sieving efficiency.

In addition, it is only necessary to dispose the weight, and it is advantageous in terms of cost.

[Brief explanation of the drawing]

FIG. 1 shows a side view of a topsoil reclamation machine equipped with the clogging prevention device of the present invention. FIG. 2 is a schematic diagram showing the relationship between the vibrating screen and the clogging prevention device. 10...Top soil preparation machine, 12...Car platform,
14...Hopper for charging soil and stones, etc., 16...
...clogging prevention device, 18...vibrating sieve,
20... Conveyor, 22... Connector,
24... Sieve surface, 26... Coil spring, 28... Exciter, 30... Drive motor, 32... Fixed rod, 34... Hanging member, 36... Weight.

Claims (1)

[Claims] 1. A plurality of coil springs are suspended above the sieve surface of the vibrating sieve at appropriate intervals so that the weights strike the sieve surface due to the vibration of the sieving sieve, and each coil spring is A device for preventing clogging of a vibrating screen, characterized in that the weight is fixed to the lower end of the screen.