JPH04102648U - dry powder mixer - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a dry powder mixer that has a simple structure, can avoid powder adhesion during the mixing process, and can achieve uniform pulverization or sufficient mixing and dispersion. [Structure] The powder to be mixed (A) is put into the rotating container (1), and during the rotation of the rotating container (1), the powder to be mixed (A) is rolled and pulverized or In the dry powder mixer for mixing and dispersing, the rotary container (1) has a gap (4) having a required width relative to the inner circumferential wall thereof.
It is characterized in that an elastic sheet (2) is disposed through the elastic sheet (2), and the powder to be mixed (A) is rolled within the elastic sheet (2).

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention involves rolling the powder to be mixed in a rotating container to crush, mix, and disperse the powder. This paper relates to a dry-type separation mixer.

0002

[Conventional technology]

Traditionally, wet or dry mixed powders such as inorganic powders and metal powders have been used. A so-called ball is used to crush the body into fine particles or mix and disperse it. Dry powder mixers such as mills, V mixers, and I mixers are used. This dryness A type powder mixer is usually equipped with a rotating steel container, and the powder to be mixed is simply placed inside this container. The above-mentioned rotating container As it rotates, it is rolled internally to pulverize the powder to be mixed, or to crush the mixed powder. It is something that scatters.

0003 In this case, due to friction and collision with the powder to be mixed and the balls in the rotating container, The inner wall surface is damaged and metal powder comes out, which gets mixed into the powder to be mixed as an impurity. There is a risk. In particular, if you do not want the contamination of such impurities, prevent this. Therefore, as shown in FIG. 3, the mixer has a rubber sheet on the inner wall of its rotating container 11. Even if a layer 12 of elastic material such as Containers made of different materials are used.

0004

[Problem to be solved by the invention]

However, the powder to be mixed is pushed against the inner wall surface of the rotating container 11 by the balls. In particular, the lifter bar 13 may be It adheres to the surface of the inner wall surface, mainly in the vicinity, and as a result, it is crushed into a homogeneous fine powder state and There was a problem that sufficient mixing and dispersion could not be achieved.

[0005] Therefore, an automatic hammer or similar device is installed inside the rotating container to forcibly crush the material. During the mixing process, interrupt the mixing process to remove any lumps of powder that have adhered to the inner wall surface. etc. are being removed. However, the former requires complicated equipment and damage. There is a problem that it is easy to do, and the latter has a problem that work efficiency is poor.

[0006]

[Purpose of invention]

The present invention was developed based on the above circumstances, and has a simple structure that can be used in the mixing process. This prevents powder adhesion and enables uniform pulverization or sufficient mixing and dispersion. The present invention aims to provide a dry powder mixer.

[0007]

[Means to solve the problem]

Therefore, in the present invention, the powder to be mixed is placed inside the rotating container, and the During the rotation of the container, the powder to be mixed is rolled and pulverized or mixed and dispersed. In the dry powder mixer, there is a space inside the rotating container that is An elastic sheet is placed through a gap of the required width, and the powder to be mixed is mixed within the elastic sheet. I try to do rolling.

[0008]

[Effect]

In this way, by creating a gap between the inner wall of the rotating container and the elastic sheet, the upper In the process of rotation of the rotary container, the part of the elastic sheet that supports the powder to be mixed is Due to the movement and elastic deformation of the cavity at its loaded position, the above It is possible to prevent the powder to be mixed from adhering to the surface of the elastic sheet.

[0009]

【Example】

Hereinafter, the present invention will be explained in detail based on the illustrated embodiments. In the figure, Reference numeral 1 is a rotary container of a mixer according to the present invention, and the inner circumferential wall of the rotary container 1 has: A plurality of lifter bars 3 are formed. And, supported by this, similar A container-shaped elastic sheet 2 is inserted into the rotary container 1 from the inner circumferential wall surface through a desired gap 4. It is located inside.

0010 The materials constituting the elastic sheet include styrene-butadiene rubber, Rubber elastic materials such as silicone rubber, urethane rubber, and fluorine rubber are used. Ru. Further, the elastic sheet 2 is applied to the inner wall of the rotary container 1, especially as in this embodiment. to the top of the lifter bar 3 by suitable means, such as adhesive, Adhesive tape, string, etc. may be used.

[0011] As shown in FIG. 2, for example, the balls 5 and When the powder to be mixed A is added to the container and the rotating container 1 is rotated, almost the lower half contains the powder A. The load of the balls and the mixed powder A is applied, and the elastic sheet 2 in that area undergoes an elastic change. shape, and approaches or touches the inner wall of the rotating container 1 so as to fill the void 4. touch However, due to the rotation of the rotating container 1, that position is shifted to approximately the upper half position. When the ball 5 moves, the ball 5 and the powder to be mixed A roll and fall within the elastic sheet 2. In the upper half, the elastic sheet 2 returns the gap 4 to its original shape with its elastic restoring force. While returning it, it rebounds, and this action prevents the adhesion of the mixed powder A.

0012 In this way, as the rotating container 1 rotates, the elastic sheet 2 Since the expansion and contraction deformation is repeated, the mixed powder A does not adhere to the surface, and the mixed powder A does not adhere to the surface. Powder A can be homogeneously pulverized into a fine powder state, or can be sufficiently mixed and dispersed. can.

[0013] The elastic sheet 2 has the ability to withstand the weight and impact of the mixed powder A and the balls. The thickness should be set to a sufficient thickness such that the thickness can be reduced, and the appropriate thickness is usually about 1 to 10 mm. Also, In practice, the gap 4 is preferably determined by taking into account the elongation rate of the elastic sheet. Usually, about 0.5 to 10 cm is appropriate.

[0014]

[Effect of the idea]

The present invention has been described in detail above, and the powder to be mixed is put into the rotating container. During the rotation of the rotating container, the powder to be mixed is rolled and pulverized or mixed. When dispersing, the inside of the rotating container has a gap of the required width against its inner circumferential wall. , an elastic sheet is provided, and the powder to be mixed is rolled within the elastic sheet. Therefore, during the process of rotation of the rotating container, the elastic sheet supporting the powder to be mixed is The elastic sheet moves toward the gap at the location where the load is applied. Due to the elastic deformation of the elastic sheet, adhesion of the mixed powder to the surface of the elastic sheet can be prevented. Wear. Therefore, the powder to be mixed can be homogeneously pulverized into a fine powder state, or can be thoroughly mixed. Can be combined and dispersed.

[Brief explanation of drawings]

FIG. 1 is a schematic longitudinal sectional view for explaining one embodiment of the present invention.

FIG. 2 is a schematic vertical cross-sectional view for explaining the operation.

FIG. 3 is a schematic longitudinal sectional view of a conventional example.

[Explanation of symbols]

1 Rotating container 2 Elastic sheet 3 Lifter bar 4 void 5 ball A Powder to be mixed

Claims (1)

[Scope of utility model registration request] 1. Dry powder mixing, in which powders to be mixed are placed inside a rotating container, and during the rotation of the rotating container, the powders to be mixed are rolled and pulverized or mixed and dispersed. In the rotating container, an elastic sheet is disposed in the rotating container with a gap of a predetermined width interposed in the inner circumferential wall thereof, and the powder to be mixed is rolled within the elastic sheet. A dry powder mixer characterized by: