JPH0482700A - High speed flying grain capture device - Google Patents

Abstract

PURPOSE:To safely and positively capture and hold a high speed flying grain in a vessel by braking and capturing the high speed flying grain in the vessel, thereafter allowing the flying grain to expend kinetic energy to be pulverized into fine grains. CONSTITUTION:A high speed flying grain 7 shot for penetration working, impact strength testing, etc., and driven from a small hole 3c drilled on the boundary wall 3 into a vessel 2 strikes the reflecting surface 5a of a reflecting block 5 provided on the opposite position of the small hole 3c to be forced to change the courses, and is then led to random multi-path reflection in the vessel 2. As a result, the flying grain 7 expends kinetic energy in the course of the multipath reflection to be pulverized into fine grains, and the grains are safely and positively captured and held in the vessel 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an apparatus for capturing high-speed flying particles ejected during material penetration processing, impact strength testing, etc.

[Prior Art] Flying particles fired during material penetration processing, impact strength testing, etc. have high speed and extremely large kinetic energy, so they must be braked and captured.
A method has been adopted in which these flying particles are made incident on a buffering material such as clay or sponge, and the buffering effect is used to brake and capture them.

However, with the above method, when the flying speed of the particles increases (approximately 100+e/s or more), the buffering material is scattered and the particles rebound, which not only contaminates the measurement environment (and even poses a risk of destruction). there were.

Additionally, in order to avoid contamination and destruction, if the above-mentioned buffer material is provided at a location sufficiently far from the material processing/testing location, there is a drawback that the work area required for processing/testing is expanded unnecessarily. .

[Problems to be Solved by the Invention] The technical problem of the present invention is to avoid the need to expand the work area required for material penetration processing, impact strength testing, etc., and to reduce the flying particles,
To provide a flying particle capturing device that can safely and reliably brake and capture without polluting or destroying the surrounding environment, and has a simple structure.

[Means for Solving the Problems] To solve the above problems, the high speed flying particle capturing device of the present invention includes a container having a small hole in the boundary wall through which the high speed flying particles are incident, and the above-mentioned trap inside the container. A reflective block is provided at a position facing the small hole and has an inclined reflective surface that refracts the path of high-speed flying particles incident through the small hole, and the high-speed flying particles can be braked and captured within the container. It is characterized by the following.

[Function] Fired during material penetration processing and impact strength tests, etc.
High-speed flying particles enter the container through a small hole drilled in the boundary wall, collide with the reflective surface of a reflective block placed opposite the small hole, and their path is forcibly refracted.
This leads to random multiple reflections inside the container. As a result, the flying particles, in their multiple reflection process,
It consumes kinetic energy and is crushed into fine particles, which are safely and reliably captured and contained in the container.

[Example] Embodiments of the present invention will be described in detail below with reference to the drawings.

FIGS. 1 and 2 are partial cross-sectional views of a high-speed flying particle capturing device according to the present invention.

In the illustrated high-speed flying particle capture device, a boundary wall 3 is fixed on a workbench l with bolts 4 at several places, and a container 2 is formed by this boundary wall 3 and a bottom surface 1a using the surface of the workbench l. In this container 2, a reflection block 5 is fixed to the workbench 1 with four bolts 6.

However, the bottom surface 1a may be provided separately from the workbench 1.

The boundary wall 3 includes a circular lid portion 3a having a small hole 3c in the center with a size suitable for the incidence of high-speed flying particles 7, and a cylindrical side wall 3b connected to the lid portion 3a. The two have an integrated structure.

On the other hand, the reflective block 5 disposed inside the container 2 has a reflective surface 5a forming an angle of 45 degrees with the workbench 1, and is opposed to the small hole 3c bored in the lid 3a of the boundary wall 3. The reflective surface 5a is fixed so as to be located directly below the reflective surface 5a. Note that the shape of the reflective block 5 can be appropriately selected, such as a cylinder cut diagonally.

In order to brake and capture the high-speed flying particles 7 emitted during penetration processing or material strength testing, etc. using the high-speed flying particle capture device having the above configuration, the high-speed flying particles 7 are first introduced into the container 2 through the small hole 3c. let When the incident high-speed flying particles 7 collide with the reflective surface 5a of the reflective block 5, their path is forcibly bent, and the particles 7 are crushed due to the collision. This leads to random multiple reflections between the inner wall of the container 2 and the surface of the reflective block 5, and in the reflection process, the particles 7 consume their kinetic energy through inelastic collisions and are crushed into fine particles 7a. It falls onto the bottom surface la and is safely and reliably captured and contained within the container.

Therefore, the high-speed flying particles can be easily and reliably captured and contained without contaminating or destroying the environment around the material processing and testing equipment.

It should be noted that if appropriate irregularities are provided on the reflective surface 5a of the reflective block 5 or on the inner surface of the container 2, there is an effect of promoting random multiple reflection, and the flying particles 7 can be crushed into even finer particles.

By the way, since the high-speed flying particles 7 have very large momentum and kinetic energy, the container 2 and the reflective block 5 need to have sufficient strength in their materials and structure. Therefore, as long as such strength is guaranteed, the boundary wall 3 may be joined by means such as bolting or welding, and its cross-sectional shape may be arbitrarily formed such as a polygonal shape. . Further, the inclination angle of the reflective surface 5a of the reflective block 5 may be appropriately determined depending on the reflection conditions of the flying particles 7, etc.
a may be composed of a curved surface or a plurality of planes.

In addition, the reflection direction in the process of multiple reflection of particles is
Consistent with c, the particles may be ejected out of the container 2 again, so in order to further ensure the capture of the particles, the area of the small hole 3C should be made as small as possible within the practical range. Alternatively, measures such as increasing the volume of the container (particularly the volume in the radial direction) or providing an edge on the inner wall side of the small hole 3c may be taken.

[Effects of the Invention] As detailed above, according to the high-speed flying particle capture device of the present invention, particles are ejected during material penetration processing or impact strength testing, and are ejected into the container from the small hole drilled in the boundary wall. The high-speed flying particles that are incident on the container collide with the reflective surface of the reflective block and are forcibly refracted in their path, as well as being guided to random multiple reflections inside the container.As a result, the flying particles are The high-speed flying particles are safely and securely captured and contained in the container without contaminating or destroying the environment around the material processing and testing equipment. can do.

Furthermore, since the structure is simple, manufacturing costs can be kept low, and since high-speed flying particles can be captured in close proximity to the processing and testing equipment, the work area can be saved.

[Brief explanation of the drawing]

FIG. 1 is a side view partially showing a high-speed flying particle capturing device according to the present invention, and FIG. 2 is a plan view partially showing the same device in cross section. 2...Container, 3...Boundary wall, 3c...Small hole, 5...Reflection block, 5a...
Reflective surface, 7. High-speed flying particles. Figure 1 Figure 2

Claims (1)

[Claims] 1. A container with a small hole in the boundary wall through which high-speed flying particles are incident, and a container located inside the container at a position opposite to the small hole to guide the path of the high-speed flying particles that enter through the small hole. 1. A high-speed flying particle capturing device comprising: a reflecting block having an inclined reflective surface for refraction, and capable of stopping and capturing high-speed flying particles within the container.