JPH0979949A - Powder sampler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powder sampler which can quickly take out powder from a capsule. SOLUTION: A mushroom-shaped valve plug 5A is seated on a valve seat section 4 from the inside of a capsule and a spring 6 presses the plug 5A against the section 4. When the plug 5A is pushed in the capsule 1, the plug 5A is separated from the section 4. Powder flows in the capsule 1 through the gap between the plug 5A and the section 4. A conic cover 11 is stuck to the upper surface of the plug 5A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder sampler for collecting a powder sample and transporting it to an inspection room in a factory line handling powder. More specifically, it relates to a powder sampler in which a powder sample is received in a shell-shaped capsule and the capsule is pumped in a guide tube.

[0002]

2. Description of the Related Art A conventional example of this type of powder sampler will be described with reference to FIGS.

The capsule 1 is in the shape of a cylindrical shell with one end (the lower end in the drawing) open and the other end closed. A male screw is engraved on the outer peripheral surface of one end of this capsule 1 and a cap 2 is screwed on. An opening 3 is provided in the cap 2 so that the inside and outside of the capsule communicate with each other, and a valve seat portion 4 is provided on an inner peripheral edge of the opening 3.

A mushroom valve-shaped valve body 5 is seated on the valve seat portion 4 from the inside of the capsule, and is biased by a spring 6 in the seating direction.

An L-shaped leg-shaped bracket 7 is fixed to the cap 2, and a guide tube 8 is fixed to the bracket 7. The spring 6 is inserted and arranged in the guide tube 8 in a stored state.

In this powder sampler 9, the valve element 5 is pushed into the inside of the capsule 1 at the powder sampling point and separated from the valve seat portion 4. The powder flows into the capsule 1 from between the valve body 5 and the valve seat portion 4. When the pressing force of the valve element 5 is released, the valve element 5 is seated on the valve seat portion 4 by the spring 6. After collecting the powder sample a predetermined number of times, the powder sampler 9 is pressure fed into the tube 10 of the air shooter to the inspection chamber as shown in FIG.

In the inspection room, the cap 2 is removed and the powder is taken out from the capsule 1.

[0008]

In the above conventional powder sampler, when the powder is taken out from the capsule 1,
It was necessary to remove the cap 2 without fail, which was troublesome. It should be noted that the powder can be dropped from the inside of the capsule by raising the capsule 1 and pushing up the valve body 5, but since a large amount of powder remains on the upper surface of the valve body 5, the accuracy is high (previous or Sampling cannot be performed (without mixing of previous sample).

An object of the present invention is to provide a powder sampler capable of easily and quickly taking out powder from the inside of a capsule.

[0010]

The powder sampler of the present invention comprises a cylindrical shell-shaped capsule whose one end side in the cylinder axis direction is open and the other end side is closed, and which is attached to the one end part of the capsule.
And a cap having an opening that communicates the inside and outside of the capsule,
A powder sampler comprising a valve seat portion formed on the inner peripheral edge of the opening, a valve body seated on the valve seat portion from the inside of the capsule, and an elastic body for urging the valve body in the seating direction. In the second aspect, the inner surface of the capsule of the valve body is formed into a conical shape whose diameter decreases toward the depth of the capsule.

In such a powder sampler, by raising the capsule and moving the valve body inside the capsule,
The powder in the capsule can be dropped and taken out.
Since the upper surface of the valve body (the inner surface of the capsule) has a conical shape, it is possible to prevent the powder from remaining on the upper surface of the valve body.

[0012]

1 is a sectional view showing a preferred form of a powder sampler, and FIG. 2 is a perspective view showing its valve body and the like.

In this powder sampler 9A, the valve body 5
A conical cover 11 is fixed to the upper surface of the. Other configurations are similar to those of the conventional example shown in FIGS. 3 and 4, and the same reference numerals indicate the same parts. Light metal such as aluminum is suitable for the cover 11.

In such a powder sampler 9A, the powder in the capsule 1 can be dropped and taken out by standing the capsule 1 and moving the valve body 5A inside the capsule 1. Since the upper surface (inside surface of the capsule) of the valve body 5A has a conical shape, it is possible to prevent the powder from remaining on the upper surface of the valve body 5A.

Therefore, the powder can be taken out from the capsule 1 without removing the cap 2, and the powder sampling operation can be performed very easily.

As a result of various experiments, this powder sampler 9A
It was confirmed that the sampling of cement and cement raw material powder can be performed easily and quickly without any mixing of the sampling sample of the previous time or before.

The cover 11 is preferably conical. The taper angle of the cover 11 may be determined according to the repose angle of the powder to be sampled.

In the present invention, instead of providing the cover 11, the valve body itself may be formed in a cone shape from the beginning. The illustrated cover 11 is hollow, but may be solid.

[0019]

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a powder sampler according to an embodiment.

FIG. 2 is a perspective view showing a valve body and the like of the powder sampler according to the embodiment.

FIG. 3 is a sectional view of a conventional powder sampler.

FIG. 4 is an exploded perspective view of a conventional powder sampler.

FIG. 5 is an explanatory diagram of a transportation state of the powder sampler.

[Explanation of symbols]

 1 Capsule 2 Cap 3 Opening 4 Valve seat part 5,5A Valve body 6 Spring 9,9A Powder sampler 10 Tube 11 Cover

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinji Sakuragi 1-1 Donan-cho, Hachimansai-ku, Kitakyushu, Fukuoka Prefecture Mitsubishi Materials Corporation Cement Development Center

Claims (1)

[Claims] 1. A cylindrical shell-shaped capsule having one end in the cylinder axis direction opened and the other end closed, and a cap attached to the one end of the capsule and having an opening communicating the inside and outside of the capsule. A powder sampler comprising a valve seat portion formed on the inner peripheral edge of the opening, a valve body seated on the valve seat portion from the inside of the capsule, and an elastic body for urging the valve body in the seating direction. In the powder sampler, the inside surface of the capsule of the valve body is formed into a cone shape whose diameter decreases toward the depth of the capsule.