TWI677375B - Agglomerated powder dispersion device - Google Patents

Abstract

A condensed powder dispersion device includes a nozzle, a base, and an impact ball. The nozzle and the base respectively have an air inlet and an air outlet. After being connected, an impact chamber is formed and communicates with the air inlet and the air outlet. The impact ball is fixed on the The clamping piece is placed on the impact chamber, and the condensed powder enters the impact chamber with the airflow and rushes to the surface of the impact ball. The powder dispersed after impact is discharged through the air outlet.

Description

Agglomerated powder dispersion device

The present invention relates to a dispersing device, and more particularly, to a device for dispersing agglomerated powder by an inertial impact method.

The physical condensation or agglomeration of fine powders often occurs due to van der Waals force, static electricity, and the tension of moisture attached to the surface. Especially, the smaller the particle size, the larger the surface area to volume ratio. It is obvious that this will cause distress and inconvenience to industrial use.

The current method for dispersing the agglomerated powder is the oscillation method, which uses external force to oscillate the powder, and uses the energy of the oscillation to overcome the interaction force between the powders for dispersion. The other method is a chemical method, in which a chemical compound reacts with the agglomerated powder to become an intermediate product, and then the reaction product is reduced back to the original powder by a certain procedure.

The invention relates to a condensed powder dispersion device, which includes a nozzle, a base and an impact ball. The nozzle and the base respectively have an air inlet channel and an air outlet channel. After docking, an impact chamber is formed and communicates with the air inlet channel and the air outlet channel. The impact ball is fixed on the clamping piece and is placed in the impact chamber. The condensed powder enters the impact chamber from the air inlet and rushes to the surface of the impact ball. The powder dispersed after impact is discharged through the air outlet.

In order to have a better understanding of the above and other aspects of the present invention, the following specific examples are described in detail below in conjunction with the accompanying drawings:

The following describes the embodiments in detail, but the embodiments are only used as examples, and are not intended to limit the scope of protection of the present invention. The following uses the same or similar symbols to indicate the same or similar elements for explanation.

Please refer to FIG. 1 to FIG. 3. The condensed powder dispersing device according to the first embodiment of the present invention mainly includes a nozzle 10, a base 20, an impact ball 30, and a holding piece 40. The nozzle 10 has an air inlet 11 inside. In order to provide condensed powder AP and mix the appropriate gas, it is sprayed into the interior of the device of the present invention; the base 20 also has an air outlet 21 and is opposite to the air inlet 11, the nozzle 10 and the base 20 can be screwed (not (Illustrated) lock, and an impact chamber IS can be formed to house the impact ball 30 and the clamping piece 40. The impact chamber IS can be formed separately or collectively inside the nozzle 10 or the base 20, which is not included in the present invention. limit.

The impact ball 30 is exemplified as a sphere, but the invention is not limited except for a flat plate, and any block having a convex arc surface can be applied. The impact ball 30 can be placed at the center of the clamping piece 40 by welding, screws, clamping, etc. The impact ball 30 in FIGS. 1 and 2 is fixed to the clamping piece 40 by welding as an example. The sheet 40 is a piece of body. The hole 42 in the central part can be determined according to the arrangement of the impact ball 30. The surrounding part has a large number of through holes 41, which are used to connect the impact chamber IS and the air outlet 21 to disperse the impact. The powder P and the air flow pass through the holding piece 40 to the air outlet 21.

Please refer to Figure 4. According to the theory of powder impact separation method, when the powders with different particle sizes are to be separated, the truncation particle size, Stokes number (Stk), and W / S ratio Relevantly, since the present invention aims to disperse agglomerated powders of a single particle size rather than sieving mixed powders of different particle sizes, when the particle size and density of the agglomerated powders to be dispersed are determined, it can be based on its particle size. Choose the appropriate size parameter and air flow or flow rate, where W is the nozzle width, S is the impact distance, and D is the diameter or width of the impact ball. The present invention suggests but is not limited, and the Stokes number is 2.0 ~ 66.2 , W / S ratio is 0.1 ~ 5.0, W / D is 0.1 ~ 1.0; after an experiment, it can be known that the dispersion device of the present invention can effectively disperse the powder particle size to at least 2.29 microns, and the corresponding Stokes number is as low as 2.0.

In the second embodiment of the present invention, as shown in FIG. 5, two clamping pieces 40 may be matched with holes 42 of an appropriate size. For example, the diameter of the holes 42 is not larger than the diameter of the impact ball 30. It is fixed in the impact chamber IS, so that the impact ball 30 can rotate with the airflow.

In the third embodiment of the present invention, as shown in FIG. 6, a clamping jaw 43 can also be fixed at the central part of the clamping piece 40 first, and then used to clamp the impact ball 30 and be fixed in the impact chamber IS. This clamping jaw 43 It can be punched from the clamping piece 40 or another piece. The clamping claw 43 has a plurality of single claws for receiving the impact ball 30 so as to be able to rotate with the airflow.

In summary, although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

10‧‧‧ Nozzle

IS‧‧‧Impact chamber

11‧‧‧air inlet

20‧‧‧ base

21‧‧‧Airway

30‧‧‧ impact ball

40‧‧‧Clip

41‧‧‧through hole

42‧‧‧hole

43‧‧‧Jaw

AP‧‧‧ agglomerated powder

P‧‧‧ powder

FIG. 1 illustrates an exploded view of a condensed powder dispersion device according to a first embodiment of the present invention. FIG. 2 illustrates a combination diagram of the dispersing device of FIG. 1 according to the present invention. FIG. 3 shows a top view of the holding sheet of the dispersing device of FIG. 1 according to the present invention. FIG. 4 is a schematic diagram illustrating the size definition of the dispersion device of FIG. 1 according to the present invention. FIG. 5 is a schematic diagram of the second embodiment of the present invention. FIG. 6 is a schematic diagram of a third embodiment of the present invention.

Claims (7)

A condensed powder dispersion device includes: a nozzle having an air inlet inside; a base docking with the nozzle to form an impact chamber; the base has an air outlet inside and communicates the impact chamber with the air inlet And an impact ball, which is disposed on a clamping sheet to be accommodated in the impact chamber, the clamping sheet has a plurality of through holes to communicate the impact chamber and the air outlet. The condensed powder dispersion device according to item 1 of the patent application scope, wherein the impact chamber is inside the nozzle, or the impact chamber is inside the base. The condensed powder dispersion device according to item 1 of the scope of patent application, wherein the impact ball is a sphere or a block with a convex arc surface. The agglomerated powder dispersion device according to item 1 of the scope of the patent application, wherein the impact ball is fixed on the clamping piece. The agglomerated powder dispersion device according to item 1 of the scope of the patent application, wherein the impact ball is sandwiched between two sheets. According to the agglomerated powder dispersing device according to item 5 of the scope of the patent application, wherein each of the two holding pieces has a hole for holding the impact ball. According to the condensed powder dispersion device described in the first item of the patent application scope, a clamping jaw is further fixed on the clamping piece, and the clamping jaw is used to clamp the impact ball.