JPH0632877Y2 - Comb type sieving machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial field of application: The present invention relates to a comb-tooth type sieving machine formed by a pair of reciprocating comb-toothed plate bands.

2. Description of the Related Art Conventionally, as a sieving machine for classifying solid powder and granules, a sieving machine for separating a net into a net and a net by a net is known.
Various types are used depending on the size, shape, dryness, required sieving accuracy, etc. of the solid to be treated.

There is also a grizzly type in which bars are obliquely arranged at intervals for the purpose of removing coarse solids in advance, but in general, a vibration or rotary net is often used, and even in the grizzly, every other bar is used. Some vibrate the bar (Brown et
al., Unit Operations, Wiley, p. 10, 1951). In the case of a perforated plate type sieve net, the integrated net is often subjected to linear reciprocating motion or circular or elliptical vibration as a whole, but as seen in the vibrating grizzly, the components of the net move relatively. There are also formats.

In Japanese Utility Model Publication No. 55-9427, substantially horizontal comb-shaped strips are arranged stepwise so as to incline downward in the advancing direction of the screen material, and the comb-shaped strips are arranged close to the fixed comb-shaped strip. There is described a sieving machine provided with a comb-shaped plate band that reciprocally slides in the comb axis direction (the direction of the comb teeth, that is, the direction perpendicular to the moving direction of the screen material). In the one described in this publication, the inclined surface is dropped and the bottom of the sieve is dropped from the gap between the combs so as to be in line with the grizzly. However, a reciprocating sliding comb-shaped strip moves the mesh components relative to each other. In this way, stirring and mixing of the screen material is induced to increase the screen efficiency per unit area of the screen.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention: However, in the one described in the above publication, since half of the comb teeth constituting the sieve surface are fixed teeth, stirring and mixing of the sieve material on the sieve surface are not sufficiently performed, There is a deviation of the screen material,
However, there is a problem that the sieving efficiency per sieve surface is not so great because of the complexity of the structure.

The present invention has been made to solve such a problem, and provides a comb-tooth type sieving machine capable of increasing the sieving efficiency with almost no risk of uneven distribution of the sieving material. The purpose is.

Means for Solving the Problems: A comb-tooth type sieving machine according to the present invention comprises a pair of combs having a plurality of comb-shaped irregularities in the screen advancing direction between two screen walls provided in parallel with the screen advancing direction. Comb-shaped, in which the strip-shaped strips are arranged substantially horizontally so as to be adjacent to each other, and a plurality of pairs of comb-shaped strips are arranged stepwise so as to sequentially descend in the advancing direction of the sieve material. The sieving machine is characterized in that it is provided with a reciprocating mechanism for reciprocally moving a pair of adjacent comb-shaped plate bands in opposite directions symmetrically in the longitudinal direction.

Operation: In the present invention, a pair of adjacent comb-shaped strips are reciprocally moved in opposite directions and symmetrically in the lengthwise direction so that one is fixed and the other is moved. Compared to the existing one, it can be agitated on the net at twice the reciprocating speed. Further, since a pair of adjacent comb-shaped strips are reciprocally moved symmetrically in the comb axis direction (horizontal direction perpendicular to the moving direction of the sieve), the sieve is offset in the comb axis direction. Is prevented.

In the present invention, the reciprocating mechanism includes a threaded rod having a left screw and a right screw, which are provided in parallel with each other in the length direction of a pair of adjacent comb-shaped strips, and provided on the adjacent comb-shaped strips. And a female thread portion that engages with the thread portion of the threaded rod.

Further, it is preferable that a gear is provided on each of the screw rods provided for each pair of the comb-shaped strips, the gears are meshed with each other, and the gears are driven by a single or a small number of driving machines.

Examples: Next, specific examples of the comb-tooth type sieving machine according to the present invention will be described with reference to the drawings.

In the comb-tooth type sieving machine of this embodiment, a pair of comb-shaped plate bands 1 and 2 having a plurality of comb teeth 1a in the advancing direction of the sieve are arranged substantially horizontally so as to be adjacent to each other. A reciprocating mechanism for reciprocating the pair of adjacent comb-shaped plate bands 1 and 2 is provided.

As the reciprocating mechanism used here, in the present embodiment, a screw rod 5 having a left screw 3a and a right screw 4a provided in parallel to the lengthwise direction of the pair of comb-shaped plate bands 1 and 2, and a comb-shaped member of these screw rods Each of the strips 1 and 2 is provided with a screw rod 5 protruding from the right end of the comb shaft.
The projections 3 and 4 each having a female screw engaging with the left screw 3a and the right screw 4a and a handle 6 for rotating the screw rod 5 are provided. Therefore,
When the handle 6 is rotated in the direction of the arrow in FIG. 1, the protrusions 3 and 4 move in opposite directions, the comb-shaped strip 1 moves to the left in the figure, and the comb-shaped strip 2 moves. Move to the right of each figure. In this way, by the reciprocating rotation of the handle 6,
The pair of comb-shaped strips 1 and 2 can be vibrated relative to each other and symmetrically.

An example of a method of supporting the pair of comb-shaped plate bands 1 and 2 is shown in FIGS. 2 and 3.

The comb-shaped strips 1 and 2 are superposed on each other and supported by a support 9 such as an angle, which is fixed to both sieve lateral walls 7 and 7 at right angles to the direction of movement of the sieve material. .
A pin 10 (for example, a bolt) is erected on the support 9, and through holes 11 and 12 are formed in the comb-shaped plate bands 1 and 2 so as to engage with the pin 10. Comb strip 1,
2 can move in the longitudinal direction within the range limited by the through holes 11 and 12, and is not displaced in the advancing direction of the screen material (horizontal lateral direction of the comb-shaped strips 1 and 2).

Further, as shown in FIG. 1, it is desirable to provide a supporting plate 8 near the sieve lateral wall 7 to prevent abnormal dropping of the sieve material from this portion.

The comb-shaped strips 1 and 2 may be in contact with each other as shown in FIG. 1, but may be arranged at appropriate intervals as shown in FIG. In this way, the relative movement between the adjacent comb-shaped strips 1 and 2 becomes extremely easy.

Although only a pair of comb-shaped strips 1 and 2 has been described in the above description, in reality, as shown in FIG. 5, a plurality of pairs of comb-shaped strips are sieves (mesh) indicated by arrows. It is arranged in a descending step shape in the traveling direction of the upper sieve material.

These pairs of comb strips are preferably driven by one drive or a small number of drives. For example, in order to drive using one driving machine, the handle 6 shown in FIG. 1 is used as a gear 13 and the adjacent gears 13 are meshed with each other, and the reference gear 13 is driven by a driving machine (not shown). It is better to drive by. In this case, the adjacent screw rod 5
Will rotate in the opposite direction, but will not affect the sieving operation. If the comb teeth 1a are moved in the same direction, the female threads of the adjacent protrusions 3 and 3 (or the protrusions 4 and 4) and the screw of the screw rod 5 may be alternated with the left screw and the right screw. Good.

Advantageous Effect of the Invention: As described above, according to the present invention, the pair of adjacent comb-shaped strips are configured to reciprocate symmetrically in opposite directions, so that a mesh (comb teeth) is formed. (The gap between them) increases or decreases symmetrically in the comb axis direction, and uneven distribution of the sieve material in the comb axis direction does not occur. Further, since there are no fixed comb teeth, there is almost no risk of clogging, and there are few failures. Further, it is possible to increase the increase / decrease speed and increase / decrease width of the mesh, and it is possible to remarkably increase the amount of sieve material processed per unit time.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a comb-tooth type sieving machine according to an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of an attachment portion of a comb-shaped strip to a sieve lateral wall, and FIG. 3 is the same. FIG. 4 is a plan view showing a mounting portion, FIG. 4 is a perspective view showing a modified example of the arrangement of the comb-shaped strips, and FIG. 5 is a longitudinal section showing the comb-tooth type sieving machine of this embodiment with a sieve placed. FIG. 6 and FIG. 6 are views showing a modified example of the drive unit of the screw rod. 1, 2 ... comb-shaped strip, 3, 4 ... protruding body 5 ... screw rod, 6 ... handle 13 ... gear

Claims (3)

[Scope of utility model registration request] 1. A pair of comb-shaped plate strips having a plurality of comb-shaped irregularities in the sieve advancing direction are disposed substantially horizontally between two sieve walls provided in parallel with the advancing direction of the sieve so as to be adjacent to each other. In a comb-tooth type sieving machine in which a plurality of pairs of comb-shaped strips are arranged in a stepwise manner so as to sequentially descend in the moving direction of the sieve, a pair of adjacent comb-shaped strips A comb-tooth type sieving machine, which is provided with a reciprocating mechanism that reciprocates in opposite directions in the length direction and symmetrically. 2. The reciprocating mechanism includes a threaded rod having a left screw and a right screw, which are provided in parallel with each other in a length direction of a pair of adjacent comb-shaped strips, and each of the adjacent comb-shaped strips. The comb-tooth type sieving machine according to claim 1, further comprising: an internal thread portion provided to engage with a thread portion of the screw rod. 3. Gears are provided on each of said screw rods provided for each pair of said comb-shaped strips, these gears mesh with each other, and these gears are driven by a single or a small number of drive machines. The comb-tooth type sieving machine according to claim 2.