JPH0380552B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a sieve for a vibratory sieving machine used for sieving iron ore, coke, etc.

BACKGROUND ART As this type of sieve, sieves made of metal such as stainless steel and wear-resistant steel, sieves made of rubber, and even sieves made of ceramic in consideration of wear resistance are also known.

Problems to be Solved by the Invention For example, when sieving iron ore using a wear-resistant steel sieve, the life of the sieve is about 150 to 200 hours, and the sieve must be replaced frequently, which is extremely troublesome. It was hot. The rubber sieve is
In some cases, it may have a longer lifespan than metal ones, but if you are sifting iron ore that has many sharp parts, or if the sieve is loaded with a high load, it is still the same as metal ones. It had a short lifespan. Rubber sieves also had the disadvantage of being sensitive to heat, making them unsuitable for sieving iron ore, which normally has heat.

On the other hand, with ceramic sieves, the wear resistance of the ceramic itself is not a problem, but since ceramic cannot be used alone, the ceramic is bonded to the surface of the perforated plate that is the substrate.
Fixing with screws has been proposed, but there are problems in that the ceramic tends to peel off when using adhesives, the ceramic tends to break when using screws, and the screw fixing work is troublesome.

An object of the present invention is to solve the above-mentioned problems and provide a sieve screen with excellent wear resistance and long life.

Means for Solving the Problems The sieve of the vibratory sieving machine according to the present invention has the following features:
Within the frame, the ceramic pieces are arranged in a staggered manner so as to surround the sieve, and the ends of two vertically adjacent ceramic pieces are overlapped in the horizontal direction,
At both ends of the ceramic piece, a downward notch having an opposing protruding engaging part at the lower opening edge is provided so as to form a continuous groove in the overlapping part of the ceramic piece. An engageable rod is inserted beyond the engaging portion of the notch so as to span the entire length of the groove, and is secured across both vertical frame members, and a rubber plate is applied to the underside of the overlapping portion of the ceramic pieces. At the same time, a support plate is placed against the lower surface of the rubber plate, and the support plate is held across both vertical frame members so as to compress the rubber plate.

Function: In the sieve of the vibrating sifter according to the present invention, the ceramic pieces are arranged in a staggered manner within the frame so as to surround the sieve openings, so that the area around the sieve openings, which are particularly abraded, is hard to wear. It's summery.

Further, the ends of two ceramic pieces adjacent in the vertical direction are overlapped in the horizontal direction, and a downward notch having an opposing protruding engaging part at the lower opening edge is provided at both ends of the ceramic piece. A rod is provided so as to form a continuous groove in the overlapped portions of the rods, and is capable of engaging with the engaging portion.
Since it is inserted into the depths of the notch so as to cover the entire length of the groove and is secured to both vertical frame members, a plurality of ceramic pieces lined up in the horizontal direction can be
It is attached to the frame with only two rods.

Furthermore, a rubber plate is applied to the lower surface of the overlapped portion of the ceramic pieces, and a support plate is applied to the lower surface of the rubber plate, and the support plate is passed between both vertical frame members and stopped so as to compress the rubber plate. Therefore, the plurality of ceramic pieces are attached to the frame by a support plate in addition to the rod, and the mounting structure is strong, and vibrations applied to the ceramic pieces are absorbed by the rubber plate.

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

As shown in FIG. 1, the sieve includes a vertically rectangular metal frame 11 and a large number of vertically rectangular vertical plate-shaped ceramic pieces 13 arranged in a staggered manner within the frame 11 and surrounding the sieve openings 12. have.

The frame 11 is made up of a pair of vertical frame members 21 and a pair of horizontal frame members 22 that are stopped at the ends on the same side as these members. Horizontal through holes 23 are formed in both vertical frame members 21 at equal intervals and in such a manner that the horizontal through holes 23 at corresponding positions in both vertical frame members 21 face each other. On the other hand, there are three upper and lower through holes 24 in both horizontal frame members 22.
They are opened one by one.

A detailed explanation of how to arrange the ceramic pieces 13 is as follows. 20 arranged horizontally
Six rows are formed in the vertical direction, each consisting of approximately the same number of ceramic pieces 13. These six columns form a group of three consecutively arranged. Among the three rows of ceramic pieces 13 forming one group, one ceramic piece 13 in one of the remaining two rows is placed between both ends of two adjacent ceramic pieces 13 in the middle row. One end and the other end of one ceramic piece 13 of the other row are interposed. As a result, a space surrounded by two adjacent ceramic pieces 13 in the middle row and one ceramic piece 13 in the remaining two rows forms one sieve opening 12. Further, among the six rows, a spacer 14 is interposed between one end of the adjacent ceramic pieces 13 in the rows at both ends.

As shown in detail in FIG.
A tapered portion 31 is formed below the middle of the height on both side surfaces. A downward notch 32 is formed in the tapered portion 31 at both ends of the ceramic piece 13, and a continuous groove is formed at one end of the ceramic piece 13 in one of the two adjacent rows and at the other end of the ceramic piece 13 in the other row. It is provided to form. The notch 32 has an opposing protruding engagement portion 32a at the lower opening edge.

A metal round rod 33 is inserted deeper than the engaging portion 32a of the notch 32 so as to span the entire length of the groove. The round bar 33 is connected to the engaging portion 32a of the notch 32.
It has a size that allows it to be accommodated further back with a slight spacing and to engage with the engaging portion 32a. Both ends of the round bar 33 protrude from the same groove, and each protrusion is inserted into the horizontal through hole 23.

Rubber plates 35 are provided on the lower surface of both ends of the ceramic piece 13.
is applied to the lower surface of the rubber plate 35, and a support plate 36 is applied to the lower surface of the rubber plate 35. Both ends of the support plate 36 protrude laterally from the rubber plate 35, and the respective protrusions are fixed to the lower surfaces of both vertical frame members 21 directly below the horizontal through holes 23.

There is a slight gap around the round rod 33 in the notch 32, and this gap is filled with an adhesive 42 such as epoxy resin. The work of filling the adhesive 42 is easy if it is done through the notch 32.

The notch 32 is formed at the same time as the ceramic piece 13 is fired, but if something like a hole is to be formed in place of the notch 32, the firing mold becomes complicated and the cost of the ceramic piece 13 increases. is expensive. Moreover, when aligning the ceramic pieces 13,
For example, it would be convenient to insert something like a bar into the notch 32 for positioning.

FIG. 6 shows how the sieve having the above structure is used. The diaphragm 51 of the vibratory sieving machine has a plurality of holes 52 vertically and horizontally, and the sieve covers each hole 52, and the screws 53 passed through the upper and lower through holes 24 of the frame 11 are inserted into the diaphragm 51. The sieve is attached to the diaphragm 51 by screwing.

Effects of the Invention According to the present invention, a sieve with excellent abrasion resistance can be obtained because the area around the sieve openings, which are particularly abraded, is less likely to be worn out.

Furthermore, since the plurality of horizontally arranged ceramic pieces are attached to the frame using only two rods, the ceramic pieces can be easily attached to the frame.

Furthermore, the plurality of ceramic pieces mentioned above are attached to the frame using support plates in addition to the rods, and although the mounting structure is strong, the vibrations applied to the ceramic pieces are absorbed by the rubber plate, so the ceramic pieces are attached to the frame using support plates. is hard to break.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the invention, Fig. 2 is a perspective view showing an embodiment of the invention;
The figure is an enlarged sectional view taken along the - line of Fig. 1, Figs. 3 and 4 are sectional views taken along the - line and - line of Fig. 2, respectively, Fig. 5 is an enlarged exploded perspective view of the main part, and Fig. 6 is an enlarged sectional view taken along the - line of Fig. 1. The figure is an explanatory diagram of the usage state. 11... Frame, 12... Sieve mesh, 13... Ceramic piece, 21... Vertical frame member, 32... Notch,
32a...engaging portion, 33...rod, 35...rubber plate, 36...support plate.

Claims (1)

[Claims] 1 Inside the frame 11, the ceramic pieces 13 are arranged in a staggered manner so as to surround the sieve mesh 12, and the ends of two vertically adjacent ceramic pieces 13 are overlapped in the horizontal direction, so that both ends of the ceramic pieces 13 A downward notch 32 having an opposing protruding engaging portion 32a at the lower opening edge is provided so as to form a continuous groove in the overlapped portion of the ceramic pieces 13, and is engaged with the engaging portion 32a. A mating rod 33 is inserted deeper than the engaging portion 32a of the notch 32 and spans the entire length of the groove, and is secured to both vertical frame members 21, and a rubber plate is attached to the lower surface of the overlapping portion of the ceramic pieces 13. 35 is applied, and the support plate 32 is applied to the lower surface of the rubber plate 35, and the support plate 3 is applied so as to compress the rubber plate 35.
6 is a sieve of a vibrating sieve machine, which is secured to both vertical frame members 21.