JPH04126554A - Method and device for disintegrating agglomerate in powder - Google Patents

Abstract

PURPOSE:To efficiently disintegrate the agglomerate in a powder by positioning a needle member suspended from the lower part of a lifting shaft in the powder at the supply part, disintegrating the agglomerate in the powder by the vertical movement and/or rotation of the needle member and supplying the powder. CONSTITUTION:A lifting shaft 2 is vertically moved by an air cylinder 5, and the needle members 4a, 4b and 4c are randomly reciprocated through a loop wire 3. The powder in a supply pipeline 1 receives the action of the members 4a, 4b and 4c at plural positions, and the agglomerate in the powder is efficiently disintegrated since the members 4a, 4b and 4c freely change their directions by gravity and the presence of the agglomerate. Furthermore, as the suspended members 4a, 4b and 4c are freely oscillated, the free end of the member is escaped from the inner surface of the pipeline 1, the upper surface of the tip of an air nozzle 7, etc., hence the parts are not damaged, and the members 4a, 4b and 4c are not deformed. The agglomerate in the powder is efficiently disintegrated in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method and apparatus for crushing agglomerates contained in powder, and more specifically, to a method for crushing agglomerates contained in powder, and more particularly, to The present invention relates to an agglomerate crushing method and apparatus for efficiently crushing and supplying agglomerates contained in powder in the supply section when the powder is supplied in a powder state.

BACKGROUND OF THE INVENTION Conventionally, as a method for supplying powder when processing powder with powder processing equipment, powder is dropped from a feeder into a raw material supply funnel and then supplied to the powder processing equipment.

The problem to be solved by the invention is that in the powder supply method described above, in the case of highly cohesive powder, such as magnetic powder raw material, agglomerates are formed and a bridge is formed in the raw material supply funnel. The supply of powder to powder processing equipment is often interrupted.

In such a case, in order to release the blockage, it is necessary to poke it with a stick-like object, which is labor-intensive and labor-intensive, and there is a risk of damage to the inner surface of the raw material supply funnel and its surrounding areas. there were.

The present invention has been made in view of the above circumstances, and its purpose is to efficiently break down the agglomerates contained in the powder, and also to eliminate the risk of damaging the inner surface of the powder supply section or its vicinity. It is an object of the present invention to provide a method for crushing agglomerates and an apparatus for the same, which can effectively perform the desired crushing with a simple structure.

Means for Solving the Problems In order to achieve the above objects, the present invention provides a method for crushing agglomerates contained in powder, which includes the following steps: A needle-shaped member suspended and supported at the lower part of the lifting shaft is positioned in the powder in the supply section, and the agglomerates contained in the powder are removed by the actuation of the needle-shaped member by the lifting and lowering movement of the lifting shaft or the lifting and lowering rotational movement. The crushing device is configured to be crushed and supplied, and the crushing device includes a lifting shaft, a needle-like member suspended and supported at the lower part of the lifting shaft via a connecting means, and a lifting shaft that lifts and lowers or rotates up and down. and a driving means for moving the
The needle-like member is arranged in the supply section of the powder processing device A. Further, in the present invention, it is preferable that the needle-like member is composed of a plurality of needle-like members having different lengths.

In this configuration, a needle-like member suspended and supported at the bottom of the lifting shaft is located in the powder in the powder supply section, and the movement of the lifting shaft causes the needle-like member to reciprocate with random motion. Movement occurs. Therefore, when the needle-shaped member reciprocates, the direction is not limited to only one location, but is freely changed depending on its own weight and the presence of aggregates, and the aggregates in the powder are efficiently broken down. In addition, since the needle-like member is in a suspended state where it can freely draw,
Even when the free end of the needle-like member is placed in contact with the inner surface of the supply section of the powder processing equipment or its vicinity, there is no risk of escape and damage to those parts, and the needle-like member itself is free from deformation. There is no risk of damage. Furthermore, since it is only necessary to attach the needle-shaped member in a suspended state to the lower part of the lifting shaft and arrange it in the powder supply section, the desired crushing can be performed effectively with a simple structure.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

In addition, FIG. 1 is a longitudinal cross-sectional view showing a state in which the present invention is implemented to disintegrate agglomerates contained in powder, FIG. 2 (A),
(B) is a side view illustrating the driving means for raising, lowering and rotating the lifting shaft, and a sectional view taken along the line nb-nb, and FIG. 3 (A
) to (D) are diagrams each illustrating the shape of the connecting means provided at the lower part of the display shaft, and FIGS. 4(A) to (D) are diagrams each illustrating the shape of the needle-like member.

In FIG. 1, 1 is a powder supply unit, a funnel-shaped supply pipe line in this embodiment, 2 is an elevator shaft, 3 is a connecting means, in this embodiment is a ring-shaped wire, 4 is a needle-like member, and 5 is an air The cylinder and 6 are ejectors.

As shown in the figure, the ejector 6 includes an air nozzle 7, a differential user 8, and a supply line 1. In operation, supply air 10 supplied to the air nozzle 7 from an air supply source (not shown) is transmitted through the opening of the air nozzle 7. High speed airflow 1 from 7a
It erupts as 1. The powder in supply pipe I is transported by high-speed airflow 11
High-speed airflow from the lower opening 1a due to the pressure decrease caused by
drawn into the group, and then spread within the Difuser 8,
From the outlet 8a, it is supplied to, for example, an air classifier and classified. The above structure and operation are the same as those of the conventional one.

Here, in the present invention, the needle member 4 is arranged so as to be located within the supply pipe line 1. The needle-like member 4 is suspended and supported at the lower part of the lifting shaft 2 via a connecting means 3 made of a ring-shaped wire. In this embodiment, the needle-like member 4 is composed of a plurality of needle-like members 4a, 4b, and 4c each having a different length.

In operation, the elevating shaft 2 moves up and down by the air cylinder 5, and each needle-like member 4a, 4
A reciprocating motion with random motion occurs in b and 4c. Due to the reciprocating movement of the needle-like members 4a, 4b, and 4C, the powder group in the supply pipe 1 is acted upon by the needle-like members at multiple locations.
In addition, the needle-like members 4a, 4b, and 4c freely change their directions due to their own weight and the presence of aggregates, so
Agglomerates in the powder are efficiently broken down. In addition, since each of the needle-like members 4a, 4b, and 4C is in a suspended state in which they can be freely challenged, even if the free ends of the needle-like members come into contact with the inner surface of the supply pipe l or the top surface of the tip of the air nozzle 7, they cannot escape. There is no risk of causing damage to those parts, and there is no risk of each needle member 4a, 4b, 4C itself being damaged such as deformation.

The connecting means 3 is one in which an annular shaft-shaped wire is passed through a hole in the lower part of the lifting shaft 2 illustrated in FIG. 1 [FIG. 3 (
C)], and in addition, the third
As shown in Figure (A), an annular shaft type line is vertically fixed to the lower part of the lifting shaft 2, and as shown in Figure 3 (B), a nearly triangular shaft type line is attached to the lower part of the lifting wheel 2. The wire may be fixed vertically, or the annular shaft wire may be fixed substantially horizontally at the bottom of the lifting shaft 2 as shown in FIG. 3(D).

Further, the needle-like member 4 is not limited to the linear member shown in FIG. 1 [see FIG. 4(A)]; ) as shown in Figure 4 (D), with a bent part at the lower free end.
It can be selected as appropriate, such as a bifurcated linear member as shown in FIG. Further, the needle-like member 4 is divided into a plurality of needle-like members 4a, 4 having different lengths, as shown in FIG.
b and 4c are preferable in that they can be applied to the powder group in the supply pipe 1 at multiple locations and to different depths, but are not particularly limited to this. A needle-like member or a single needle-like member can be selected as appropriate. Note that the materials, dimensions (diameter, length), etc. of the shaft wire 3 and the needle-like member 4 can also be selected as appropriate.

Furthermore, although the movement of the lifting shaft 2 is mainly the lifting movement (reciprocating movement) by the air cylinder 5, rotational movement may be provided in addition to this lifting movement.
As shown in FIG. 2, for example, a spiral protrusion 2a is provided on the surface of the elevating shaft 2, and this is fixed to a frame (not shown) as a guide member 9. With such a configuration, the lifting shaft 2 is given rotational motion in addition to the lifting movement by the air cylinder 5, and the lifting rotational movement is It will be done. In this case,
The main movement that breaks up the agglomerates is the up-and-down movement (reciprocating movement).

The movement path H (stroke length) of the vertical movement of the vertical axis 2 depends on the length and internal structure of the supply pipe 1, the distance between the supply pipe 1 and the upper surface of the tip of the air nozzle 7, etc. The number of vertical movements (stroke number) per unit time can be appropriately selected depending on the size of the agglomerates in the powder, the strength of the agglomerates, and the amount of powder supplied per unit time.

Note that the mechanism that generates the elevating motion (reciprocating motion) is
The air cylinder 5 is not limited to the one shown in the drawings, and can be selected as appropriate, and the mechanism for generating the rotational movement and the rotational speed of the rotational movement can also be selected as appropriate.

Experimental example Powder processing machine shown in Fig. 1 [Ejector 6 ~ length approximately 200 mm
, connect the outlet 8a side to the air classifier: powder supply part 1 - length 75mm, upper opening 1b 34mmφ, lower opening 1a 15
mm x 15 mm funnel] is used, and an annular shaft type line 3 is provided at the lower part of the lifting shaft 2 for lifting movement by an air cylinder 5.
, three needle-like members 4a, 4b, and 4c with lengths of 22 mm, 20 mm, and 18 mm, respectively, which differ by 2 mm from each other, are suspended from the shaft line 3, and the stroke length of the air cylinder 5 is 50 mm, and the stroke length of the air cylinder 5 is 50 mm. Several hundred times/minute (last time 0
．． 3 seconds and 0.3 seconds each time), the highly cohesive magnetic powder raw material was fed to the powder supply section 1 at a constant rate of 3 kg per hour using a table feeder.

As a result, when the needle-like member was not used, the powder 20 would get on top of the agglomerates 21, and the powder supply section 1 would become clogged in just 10 seconds. Since the agglomerates 21 were broken down, there was no clogging even for 60 minutes.

Effects of the Invention As is clear from the above explanation, the present invention has the following effects.

In the invention of the method for crushing agglomerates, a needle-shaped member suspended and supported at the lower part of the lifting shaft is positioned in the powder in the powder supply section, and the movement of the lifting shaft causes the needle-shaped member to be randomly distributed. Since the reciprocating motion is generated, the agglomerates in the powder can be efficiently broken down. In addition, since the needle-like member is in a suspended state that can be freely supplemented, there is no risk of damage to the inner surface of the powder supply section or its vicinity, and there is no risk of the needle-like member itself being damaged by deformation or the like. Furthermore, by giving the elevating shaft a rotational motion in addition to the elevating motion, the movement of the needle-shaped member can be made more random, and the agglomerates can be broken up more efficiently.

In the invention of the agglomerate crushing device, it is only necessary to attach the needle-like member to the lower part of the lifting shaft in a suspended state and place it in the powder supply section, so the above method can be carried out efficiently with a simple structure. can do. Furthermore, if the needle-like members are made of a plurality of needle-like members each having a different length, the particles can be applied to the powder group in the supply section at multiple locations and to different depths. Coupled with the operation, the agglomerates in the powder can be broken up more efficiently.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view showing the state in which the present invention is implemented to break up aggregates contained in powder, and Fig. 2 (A) and (B)
3(A) to 3(A) are a side view and a sectional view taken along the line nb-nb, illustrating a driving means for elevating and rotating the elevating shaft;
4(D) is a diagram illustrating the shape of the connecting means, and FIGS. 4(A) to 4(D) are diagrams illustrating the shape of the needle-like member, respectively. 1. Powder supply section 1a-.Lower opening lb,..Upper opening 2..Elevating shaft 2a-.Convex portion 3..Connection means (ring-shaped wire) 4-4a, 4b, 4C.. Needle member 5...Air cylinder 6...Ejector 7...Air nozzle 7a...Opening part 8...Diff user 8a2. Outlet 99, guide member 9
a... Concavity 10... Supply air 11... High speed airflow 20... Powder 21... Agglomerate Fig. 1

Claims (3)

[Claims] (1) When supplying powder to the supply section of powder processing equipment in a sliding state, a needle-like member suspended and supported at the lower part of the lifting shaft is positioned in the powder in the supply section, and A method for disintegrating agglomerates contained in powder, which comprises disintegrating and supplying agglomerates contained in powder by operating a needle-like member through vertical movement or vertical rotational movement. (2) comprising an elevating shaft, a needle-like member suspended and supported at the lower part of the elevating shaft via a connecting means, and a drive means for elevating and rotating the elevating shaft; 1. An apparatus for disintegrating agglomerates contained in powder, characterized in that the apparatus is disposed within a supply section of a body processing equipment. (3) The apparatus for disintegrating agglomerates contained in powder according to claim 2, wherein the needle-like member comprises a plurality of needle-like members having different lengths.