Patent Application
20180161819
The present disclosure relates to a tool for sieving microparticles and, more particularly, to a sieve for microparticles to increase the uniformity of microparticles obtained after sieving.
In recent years, production and applications of microparticles are more and more extensive. Nevertheless, microparticles must be sieved to obtain diameter uniformity in many applications. However, current sieves are made by weaving, such that the precision of the micropores is not good enough (even a sieve having the best precision has a tolerance as high as ±20 μm). Furthermore, the micropores of the sieves are often blocked after a period of time of use, and the blockage is difficult to be fully cleared even by high pressure fluid impact that undesirably deforms the sieves and, thus, reduces the precision. Thus, blocked sieves are replaced by new sieves in current processing, leading to wasting of resource and causing difficulties in reduction of the costs.
Thus, improvement to the conventional tools for sieving microparticles is necessary.
To solve the above problem, the present disclosure provides a sieve for microparticles to increase the precision of the micropores, such that the sieved microparticles have a better diameter uniformity.
The present disclosure provides a sieve for microparticles including detachable components that can be assembled to form micropores. The sieve can be detached when the micropores are blocked, permitting easy cleaning for repeated use.
The directional terms or similar terms, such as “front”, “rear”, “upper”, “top”, “lower”, “bottom”, “inner”, “outer”, and “side”, used in the present disclosure are referred to in connection with the accompanying drawings. The directional terms or similar terms are merely used to assist in describing and understanding the embodiments of the present disclosure, rather than restricting the present disclosure.
A sieve for microparticles according to the present disclosure includes a seat having a chamber and a plurality of boards mounted in the chamber. Each of the plurality of boards includes a first face and a second face opposite to the first face. The first face includes at least one notch. The second face includes at least one groove. The first face of each of the plurality of boards abuts the second face of an adjacent board. The at least one notch and the at least one groove respectively of two adjacent boards are partially aligned and intercommunicated with each other.
Thus, the sieve for microparticles according to the present disclosure can increase the precision of the micropores, such that the sieved microparticles have a better diameter uniformity. Furthermore, the sieve for microparticles according to the present disclosure uses detachable components that are assembled to form micropores, such that the sieve can be detached, washed, and used repeatedly when the micropores are blocked, thereby reducing the sieving costs.
In an example, each of the plurality of boards further includes a third face and a fourth face opposite to the third face. The first face is connected to the third face and the fourth face. The second face is connected to the third face and the fourth face. The at least one notch extends to the third face. The at least one groove extends to the fourth face. Such a structure is easy to manufacture to reduce the manufacturing costs.
In an example, the seat includes a through-slot intercommunicated with the chamber. The fourth face of each of the plurality of boards is contiguous to the through-slot. Such a structure increases convenience of collection of the microspheres after sieving.
In an example, the depth of the at least one groove increases from an end thereof adjacent to the third face toward the other end thereof. Such a structure avoids capillary action, and the pressure of the fluid entering the at least one groove is reduced, thereby avoiding resistance during flow of the microspheres. Thus, the sieving efficiency of the microparticles is increased.
In an example, the at least one groove between two adjacent boards has a tapered shape, and the tapered shape has an angle of 2-10 degrees. Such a structure is easy to form while maintaining a good structural strength of the boards. The processing convenience of the at least one groove is increased while reliably avoiding deformation of the boards.
In an example, each of the first face and the second face of each of the plurality of boards is plated with a hydrophobic film or a smooth film to further increase the flowability of the fluid and the microspheres.
In an example, the at least one groove includes a plurality of grooves disposed along a longitudinal direction of the plurality of boards. A separation portion is formed between two adjacent grooves and includes an abutment face coplanar with the second face. Such a structure maintain the boards to avoid deformation under pressure, thereby more precisely control the size of the sieved microparticles.
In an example, the at least one groove includes only one groove extending along a longitudinal direction of the plurality of boards and having rectangular cross sections. Such a structure permits easy processing for forming each board while increasing the sieving efficiency of the microparticles.
In an example, the seat including a base, a plurality of lateral beams, and a plurality of pressing beams. The plurality of lateral beams is mounted on an upper surface of the base. The plurality of pressing beams is detachably assembled to end faces of the plurality of lateral beams by a plurality of fasteners. The base, the plurality of lateral beams, and the plurality of pressing beams together define the chamber. Such a structure permits the whole sieve to be easily detached, providing operational convenience for cleaning the boards.
In an example, each of the plurality of fasteners is a screw to permit adjustment of the pressing tightness exerted by the pressing beams against the boards, thereby achieving micro adjustment of the diameter of the microparticles to be sieved.
The present disclosure will become clearer in light of the following detailed description of illustrative embodiments of the present disclosure described in connection with the drawings.
With reference to
The seat 1 is not limited in shape. In the embodiment shown in
In a non-restrictive example, the through-slot 111 in this embodiment has rectangular cross sections. Thus, the seat 1 includes two lateral beams 12 opposite to each other and two pressing beams 13 opposite to each other. The two lateral beams 12 and the two pressing beams 13 are mounted along a periphery of the through-slot 111. Preferably, the two lateral beams 12 are detachably assembled by fasteners S to the upper surface 11a of the base 11 to increase the operational convenience during assembly of the boards 2. Preferably, the two pressing beams 13 are detachably assembled by fasteners S to end faces of the two lateral beams 12. The fasteners S are preferably screws to permit adjustment of the pressing tightness exerted by the two pressing beams 13 against the boards 2.
With reference to
In an embodiment shown in
With reference to
To improve the microparticle sieving efficiency of the boards 2, the depth D of the at least one groove 22 of each board 2 preferably increases from an end thereof adjacent to the third face 2c toward the other end thereof. Thus, each groove 22 between two adjacent boards 2 has a tapered shape, and the tapered shape has an angle θ of 2-10 degrees. Consequently, each groove 22 can be formed easily while maintaining a good structural strength for each board 2. Deformation is, thus, difficult to occur. Furthermore, the groove 22 can avoid capillary action, and the pressure of the fluid entering the groove 22 is reduced, thereby avoiding resistance during flow of the microspheres. Furthermore, each of the first face 2a and the second face 2b of each board 2 is plated with a film, such as a hydrophobic film or a smooth film, to further increase the flowability of the fluid and the microspheres.
With reference to
With reference to
In comparison with conventional sieves formed by weaving and including micropores having a tolerance of at least ±20 μm, the sieve for microparticles according to the present disclosure uses stacked boards 2 to form micropores A. Thus, the width W (
Furthermore, the sieve for microparticles according to the present disclosure is detachable, such that when the micropores A are blocked by the microparticles P, the stacked boards 2 can be detached and cleaned to easily remove the microparticles P adhered in the notches 21. After cleaning, the sieve for microparticles according to the present disclosure is reassembled to permit repeated use. Thus, it is not necessary to use a high pressure fluid to impact the boards 2, avoiding deformation of the boards 2 that will adversely affect the precision of the micropores A after reassembly. Furthermore, the sieve for microparticles according to the present disclosure can be used repeatedly to reduce wasting of resource, effectively reducing the sieving costs.
In view of the foregoing, the sieve for microparticles according to the present disclosure can increase the precision of the micropores A, such that the sieved microparticles P has a better diameter uniformity. Furthermore, the sieve for microparticles according to the present disclosure uses detachable components that are assembled to form micropores A, such that the sieve can be detached, washed, and used repeatedly when the micropores A are blocked, thereby reducing the sieving costs.
Thus since the present disclosure disclosed herein may be embodied in other specific forms without departing from the spirit or general characteristics thereof, some of which forms have been indicated, the embodiments described herein are to be considered in all respects illustrative and not restrictive. The scope of the present disclosure is to be indicated by the appended claims, rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are intended to be embraced therein.
