JPS604629Y2 - Rubber screen for vibrating sieve - Google Patents

Description

[Detailed description of the invention] This invention relates to an improved rubber screen that is fixed to the frame of a vibrating sieve to sieve ores, etc., and improves the drawback that the sieve holes of the conventional polygonal staggered arrangement are clogged. This is what I did.

Now, to explain the details with the drawings, in a rubber screen formed by arranging and perforating polygonal through holes in a staggered manner with respect to the flow direction of the belt body 1, the polygonal through holes are made into triangular through holes 2, The triangular bases 2' arranged in a staggered manner are perpendicular to the flow direction A of the belt, the triangular apexes 2'' of the vertically arranged groups are oriented in opposite directions for each arrangement group, and the side peripheral walls of each triangular through hole are It is characterized by an inclined wall surface 3 whose sides widen.

B indicates particles to be sorted.

Conventional polygonal holes arranged in a staggered manner would cause clogging, so the polygonal through-holes themselves were devised and arranged so that each side was at a non-perpendicular angle, allowing the holes to undergo slight vibrations of expansion and contraction in the lateral direction. It has been proposed to increase the falling efficiency by giving the screen more strength, but this weakens the strength of the screen book and requires a reinforcing method.
The screen is complicated and expensive, and since the holes themselves expand and contract, they lack accuracy in sieving to the required particle size, resulting in drawbacks such as large-diameter particles getting trapped and clogging.

In this application, the shape of the through holes is devised while maintaining the strength of the conventional screen, and as mentioned above, the base is triangular and perpendicular to the flow direction, and the vertices are arranged in a staggered manner in opposite directions for each row. A comprehensive effect is obtained by the joint structure of the inclined wall surface of the hole in the side circumferential wall that widens from side to side.

In other words, among the raw material particles to be sorted that reach the through-holes due to the vibration of the screen, those with a diameter corresponding to the inscribed circle of the triangular through-holes fall down and are sieved out by the slight vibrations, but the particles that are vibrated back and forth are They collide with the bottom sides, which are arranged perpendicular to the flow direction of the belt, facing each other, are accurately captured, and guided into the hole.
Vibration impact is applied on three sides facing each other, and the downwardly expanding shape of the slanted wall surface of the hole ensures that the particles fall and are completely free from clogging.

In addition, the diameter of the particle falling into the triangular hole is inscribed in the triangular side, but since triangular spaces remain at the three corners, the amplitude space during vibration is large, the vibration amplitude becomes large, and the falling efficiency is extremely high.

As described above, the present application has a combination structure in which the triangular through-holes are arranged in a reverse staggered pattern and the bottoms of the screen body are arranged at right angles to the flow direction and the holes are tapered, resulting in a synergistic effect with extremely high drop efficiency and no clogging. It is.

[Brief explanation of drawings]

Fig. 1 is a plan view of the present invention, Fig. 2 is a cross-sectional view, Fig. 3 is an enlarged view showing the movement of particles inside the through hole during vibration, Fig. 4, Fig. 5
The figure shows a plan view of an application example. 1... Belt body, 2... Triangular hole, 2'... Triangular base, 2''... Triangular apex, 3... Inclined wall surface, A...The flow direction of the belt.

Claims (1)

[Scope of utility model registration request] In a rubber screen in which polygonal holes are arranged in a staggered manner with respect to the flow direction of the belt body, the polygonal holes are made into triangular holes, and the triangular bases arranged in a staggered manner are arranged in a staggered manner. perpendicular to the direction, the triangular vertices of the vertical array groups are in the opposite direction for each array group, and the side peripheral wall of each triangular through hole is
A rubber screen for vibrating sieves characterized by an inclined wall surface that expands at the bottom.