JPH0633935U - Shot separator - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to improve the shot separation rate from granular cotton. [Structure] A shot separator is arranged in the middle of a duct having a rectangular cross section. The shot separator has two baffle plates protruding downward from the ceiling surface, and a hopper 3 is arranged below the baffle plates. The two baffle plates are juxtaposed in the front-rear direction, and the downstream baffle plate 2 projects downward from the upstream baffle plate 1 to form a step. Further, a rotary valve 5 is arranged at the lower end of the hopper 3, and the shot 6 accumulated in the hopper 3 can be discharged through the rotary valve 5. Further, a flat plate-shaped outlet collision plate 4 projects from the tapered surface 3a of the hopper 3 on the upstream side of the pipeline.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shot separator for removing shots mixed in granular cotton when the granular cotton is manufactured from blast furnace slag.

[0002]

[Prior art]

 The molten blast furnace slag is manufactured into cotton of a specified length by a fiberizing device such as a spinner wheel, and the specified length of cotton is cut to form granular cotton. During the production of cotton, part of the blast furnace slag becomes shot and mixes into the cotton.

Therefore, before using the granular cotton as a product, the shot 6 mixed in the granular cotton is usually removed by a shot separator. The conventional shut-off separator is provided in the middle of a pipeline for conveying cotton by the air flow 7, and as shown in FIG. 3, a flat plate-shaped baffle plate 10 that blocks the air flow 7 that travels straight and swirls the air flow 7. And a hopper 3 arranged below the baffle plate 10.

Then, the granular cotton and the shots 6 carried by the airflow 7 are discharged toward the baffle plate 10 by the centrifugal force of the swirling airflow 7 in front of the baffle plate 10. In this case, since shot 6 has a larger specific gravity than granular cotton, the separation speed by the centrifugal force is high. For this reason, most of the granular cotton swirls the lower end of the baffle plate 10 without colliding with the baffle plate 10, but the shot 6 collides with the baffle plate 10 and stalls, and the shot 6 falls as it is and falls into the hopper. Collected within 3. As a result, the shot 6 is separated from the granular cotton.

[0005]

[Problems to be solved by the device]

 However, in the above-mentioned conventional shot separator, the shot 6 collides with one baffle plate 10 to separate it, but the shot 6 that has passed through the lower side of the pipeline, the shot 6 with a small grain size, etc. However, there is a problem that the lower end of the baffle plate 10 is swung without colliding with the baffle plate 10 and is not separated from the granular cotton.

The present invention has been made in view of the above problems, and an object thereof is to improve a shot separation rate from granular cotton.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the shot separator of the present invention is provided with a baffle which is provided in the middle of the pipeline and projects downward from the ceiling surface, and a hopper disposed below the baffle. In the shot separator made of, a plurality of baffle plates are arranged side by side in the front-rear direction, and a flat outlet projecting plate is projected from the tapered surface of the hopper on the downstream side of the pipeline.

At this time, it is preferable that the lower end portion of each baffle plate is extended rearward, and the end face thereof is brought into contact with or close to the front face of the baffle plate on the downstream side.

[0009]

[Action]

 By arranging multiple baffles side by side in the front-rear direction, a shot that avoids a collision with an upstream baffle can collide with a baffle placed behind it, and a shot hits a baffle. Opportunities increase. At this time, if the downward protrusion amount of each of the plurality of baffle plates is sequentially increased toward the downstream side to form a step, the chance of a shot hitting the baffle plate is further increased.

Further, the shot avoiding all of the plurality of baffles rises along the taper surface of the hopper on the downstream side of the pipeline due to the air flow, collides with the outlet collision plate protruding from the taper surface, and collides with the hopper. Fall inside. Further, if the lower end of each baffle plate is extended rearward, the air flow is prevented from entering between the front and rear baffle plates, and the generation of unnecessary vortex is suppressed.

[0011]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. First, the structure will be described. As shown in FIG. 1, a shot separator is arranged in the middle of a duct having a rectangular cross section. The shot separator includes two baffles 1 and 2 projecting downward from the ceiling surface, and a hopper 3 arranged below the baffles 1. The two baffles are juxtaposed in the front-rear direction, and the baffle 2 on the downstream side projects downward from the baffle 1 on the upstream side to form a step relatively.

A rotary valve 5 is arranged at the lower end of the hopper 3, and the shot 6 accumulated in the hopper 3 can be discharged through the rotary valve 5. Further, a flat plate-shaped outlet collision plate 4 projects from the tapered surface 3a of the hopper 3 on the upstream side of the pipeline. In the shot separator having the above structure, the shot 6 sent from the upstream of the pipeline by the airflow 7 is disturbed by the centrifugal force of the swirling airflow 7a in front of the upstream baffle plate 1 due to the centrifugal force. It is discharged toward the plate 1, collides with the baffle plate 1 as it is, stalls, falls by gravity, and is stored and accumulated in the hopper 3.

The shot 6 swirling the lower end of the upstream baffle plate 1 is discharged toward the downstream baffle plate 2 by the centrifugal force generated by the swirling airflow 7b in front of the downstream baffle plate 2, and is kept as it is. The baffle plate 2 collides with the baffle plate 2, stalls, falls by gravity, and is stored in the hopper 3 and accumulated. The shot 6 avoiding both baffles 1 and 2 rises by the airflow 7c flowing along the tapered surface 3a of the hopper 3, but collides with the exit collision plate 4 protruding from the tapered surface 3a and stalls. It falls on the tapered surface 3a and is stored and accumulated in the hopper 3.

The shots 6 accumulated in the hopper 3 intermittently drive the rotary valve 5 to be discharged. As described above, in the shot separator of the present embodiment, by providing a plurality of plates 1, 2 and 4 for colliding the shot 6, the chance of collision of the shot 6 is increased and the separation rate of the shot 6 from the granular cotton is improved. I am making it.

In the above-described embodiment, since the vortex 7d is generated in the gap between the baffles 1 and 2 to disturb the flow of the airflow 7, as shown in FIG. 2, the lower end of the upstream baffle 1 extends backward. The extended end surface 1a is placed close to the front surface of the baffle plate 2 on the downstream side to prevent the airflow 7 from entering the gap formed between the baffle plates 1 and 2 and to generate a vortex flow in the gap. 7d should be suppressed.

Further, in the shot separator shown in FIG. 2, by fixing a column 8 with its axis oriented to the left and right to the lower end portion of the baffle plate 2 on the downstream side, the curvature of the swirling airflow 7 e flowing around the lower end of the baffle plate is increased. The radius is increased to increase the collision rate of the shot 6 on the exit collision plate 4, and at the same time, the third baffle plate 9 is projected obliquely upward from the cylinder 8 so as not to generate a vortex above the cylinder 8. I am setting it up.

[0017]

[Effect of device]

 As explained above, the shot separator of the present invention has the effect of increasing the chance of shot collision and improving the shot separation rate from granular cotton.

[Brief description of drawings]

FIG. 1 is a sectional view showing a shot separator according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a second embodiment of a shot separator according to the present invention.

FIG. 3 is a cross-sectional view showing a conventional shot separator.

[Explanation of symbols]

 1 Baffle plate on the upstream side 2 Baffle plate on the downstream side 3 Hopper 4 Exit collision plate 6 Shot 7 Air flow

Claims (2)

[Scope of utility model registration request] 1. A shot separator comprising a baffle plate provided in the middle of a pipe line and protruding downward from a ceiling surface, and a hopper arranged below the baffle plate,
A shot separator, wherein a plurality of baffle plates are arranged side by side in the front-rear direction, and a flat outlet collision plate is projected from the tapered surface of the hopper on the downstream side of the pipeline. 2. The shot separator according to claim 1, wherein a lower end portion of each baffle plate is extended rearward, and an end face of the baffle plate is brought into contact with or close to a front face of the downstream baffle plate.