JPH0326953Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] The present invention relates to a device for removing fine powder from packing materials for sliding nozzles, and can effectively remove fine powder with a predetermined particle size or less, while reducing installation space and reducing equipment costs. This invention relates to a device for removing fine particles from a filling material for a sliding nozzle, which reduces operating costs. [Conventional technology and its problems] Refractory material having a particle size of about 0.3 to 2.5 mm is normally used as the filler material for sliding nozzles, but the filler material supplied from the factory often contains fine powder that has been mixed in and adhered during the grinding process. This dust is a factor that causes dust to be generated when the filler raw material is filled into a required container such as a flexible container bag, and that it obstructs the smooth opening of the sliding nozzle. For this reason, it is necessary to remove the above-mentioned fine powder from the filling material raw material for sliding nozzles. Conventionally, in order to remove fine powder from a raw material for a filling material for a sliding nozzle, a dry process using a vibrating sieve, a rotating sieve, etc. has been performed. When removing fine powder from the filler raw material, the processing speed must be slower than that using a normal vibrating sieve, rotary sieve, etc., and the fine powder may adhere to the material to be treated, that is, the particles of the filler raw material. As shown in Table 1, for example, it is very difficult to remove fine powder, and it cannot be said to be an effective method. In order to solve the problems of dry processing, it is possible to adopt wet classification or wind classification, but conventional wet classification and wind classification require a large equipment footprint, and the equipment costs and operating costs are large. There is a problem with bulk. The present invention was proposed in view of the above circumstances, and it can effectively remove fine powder with a diameter smaller than a predetermined diameter, and can also reduce the installation area and reduce equipment costs and operating costs. It is an object of the present invention to provide a device for removing fine powder from a filling material for a sliding nozzle. [Means for Solving the Problems] The apparatus for removing fine powder from a filling material for a sliding nozzle according to the present invention takes the following technical measures to achieve the above object. That is, the hopper is equipped with a main body cylinder having a vertical shaft, a hopper on the upper part of which feeds the filling material raw material for the sliding nozzle, and a chute for dropping the filler raw material from the lower part of the main body cylinder into a predetermined container. is provided with a flow rate adjustment gate that adjusts the falling amount of the filler raw material that is supplied falling into the main body cylinder, and a scattering plate that disperses the filler raw material that has been dropped and supplied within the main body cylinder; A dispersion screen that separates fine powder from the filler raw material scattered by the scattering plate by a falling impact is placed at an appropriate distance above and below, while an air stream with a predetermined air volume and speed flows into the main cylinder from below the dispersion screen. A blower device for supplying the filler material is connected to a dust collector device for collecting the fine powder separated from the filler raw material by the dispersion screen. The filler raw material dropped and supplied from the hopper hits the scattering plate and is finely dispersed within the main cylinder, and the fine powder adhering to the particles of the filler raw material is peeled off by impact. Furthermore, the particles of the dispersed filler raw material fall onto the dispersion screen and hit the dispersion screen, resulting in a fall impact from the filler raw material and the particles rubbing against the dispersion screen as they pass through the dispersion screen, causing fine powder to be separated from the particles of the filler raw material. be done. The fine powder separated from the particles is collected by the dust collector by wind flowing from the blower to the dust collector within the main body cylinder. The particles of the filler raw material from which the fine powder has been separated fall under their own weight and are stored in a predetermined container via a chute. Since the main body cylinder has a vertical axis, it can be made smaller and the installation area can be reduced, and equipment costs can be reduced.In addition, the fine powder is separated from the particles of the filler raw material by the falling impact, and the air flows to the blower or dust collector. Since the air classification is performed by wind, classification can be performed in a short time and with high efficiency, and operating costs can be reduced.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 is a longitudinal sectional view of an embodiment of the present invention,
FIG. 2 is a front view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is a plan view of the dispersion screen. This device for removing fine particles of filler for a sliding nozzle includes a main body cylinder 1 having a vertical axis, a hopper 2 for dropping and supplying the filler raw material from the upper side of the main body cylinder 1, and a predetermined container, ie, a flexible container bag, from the lower part of the main body cylinder 1. 3 and a chute 4 for dropping the filler raw material. A flow rate adjustment gate 5 is provided at the bottom of the hopper 2 to adjust the amount of the filler material falling and supplied to the main body cylinder 1, and the hopper and the main body cylinder are connected by a bellows tube 6. Inside the main body cylinder 1, there are a scattering plate 7 for dispersing the filler raw material supplied by falling, and dispersion screens 9a, 9b, and 9c for separating fine powder from the filler material scattered by the scattering plate 7 due to the impact of the fall. They are placed at appropriate intervals above and below. The scattering plate 7 is formed into a conical shape so that the filler material does not accumulate on its upper surface, and is supported by the main body cylinder 1 by a support member 8. Further, the dispersion screens 9a, 9b, 9c are made of wire mesh arranged in three upper and lower stages so as to completely cover the internal cross section of the main body cylinder 1, respectively.
The directions of the meshes 9c are sequentially rotated by 45 degrees from each other, as shown in FIG. A dispersion screen 9 is provided at the bottom of the main body cylinder 1.
A blower device 10 is connected to supply airflow having a predetermined air volume and wind speed from below a, 9b, and 9c,
In addition, a dispersion screen 9 is provided at the top of the main body cylinder 1.
A, 9b, and 9c are connected to a dust collector 11 that collects the fine powder separated from the filler raw material.
The air blower 10 is provided with a slide gate 19 for adjusting the flow rate, and the suction path 12 of the dust collector 11 is provided with a slide gate 13 for adjusting the suction air flow. Furthermore, the resistance of the scattering plate 7 to the airflow flowing from the blower 10 to the dust collector 11 is reduced, and the fine powder carried by the airflow is removed from the scattering plate 7.
An inverted cone-shaped baffle plate 14 is provided to completely cover the lower surface of the scattering plate 7 so as not to stagnate on the lower surface. A guide vane 15 is provided at the lower part of the main body cylinder 1 to guide the filler raw material falling into the chute 4 to the center of the main body cylinder 1 and the chute 4 while swirling the chute 4 provided in series with the main body cylinder 1. A dust-collecting hood 16 is provided around the container to prevent dust from scattering when the filler material is dropped from the chute 4 into the flexible container bag 3. This hood 16 is connected to the dust collector 11 through a suction path 17, and this suction path 17 is provided with a suction adjustment slide gate 18 for adjusting the amount of suction air. In the above configuration, from the hopper 2 to the main body cylinder 1
When the filler raw material whose flow rate is controlled by the flow rate adjustment gate 5 is dropped into the chamber, the filler raw material hits the scattering plate 7, and the fine powder attached to the particles of the filler raw material is peeled off from the particles by the impact. Ru. In addition, the particles of the filler raw material dispersed by the scattering plate 7 are distributed on the inner peripheral surface of the main body cylinder 1 and on the dispersion screens 9a, 9b,
At step 9c, the fine powder adhering to the particles of the filler raw material is peeled off from the particles by the impact. Alternatively, the particles of the filler raw material may be dispersed through the dispersion screens 9a, 9.
The fine powder adhering to the particles by rubbing against the nets b and 9c is peeled off from the particles. The fine powder thus separated from the particles of the filler raw material is transferred to the air blower 10.
The main body cylinder 1 rides on the airflow flowing from the dust collector 11 to the dust collector 11.
The dust rises inside and is collected by the dust collector 11. That is,
Fine powder can be removed by falling impact or dispersion screens 9a, 9.
It is separated from the particles of the filler raw material by rubbing with the nets b and 9c, and is removed from the particles of the filler raw material by wind screening. Here, the particle size, processing amount, etc. of the fine powder to be separated are determined by adjusting the opening degrees of the flow rate adjustment slide gate 19 and the suction adjustment slide gate 13 of the air blower 10 to determine the airflow flowing from the air blower 10 to the dust collector 11. is controlled by the flow rate, that is, the suction air volume of the dust collector 11. As shown in Table 1,
The result of removing fine powder by this apparatus for removing fine powder from a filling material for a sliding nozzle is much superior to that of the conventional method. Incidentally, since foreign matter mixed into the filler raw material is collected by the dispersion screens 9a, 9b, and 9c, foreign matter is prevented from being mixed into the filler raw material falling into the flexible container bag 3 via the chute 4. The filler raw material from which fine powder and foreign matter have been separated falls into a chute 4, and further falls into a flexible container bag 3 disposed below the chute 4. Since the filler raw material is rotated by the guide vanes 15 when falling into the flexible container bag 3, the filler raw material that has fallen into the flexible container bag 3 is appropriately dispersed within the flexible container bag 3. Furthermore, fine powder may be generated in the flexible container bag 3 when the container is dropped into the flexible container bag 3, but this fine powder is collected by the dust collector 11 via the hood 16. The particle size, amount, etc. of the fine powder collected from inside the flexible container bag 3 are controlled by adjusting the opening degree of the slide gate 18 of the suction path 17. By collecting the fine powder generated in the flexible container bag 3 with this hood 16, the fine powder from the filler raw material can be more reliably removed, and the scattering of the fine powder to the surroundings can be more reliably prevented. . [Effects of the invention] As described above, according to the invention, the fine powder adhering to the particles of the filler raw material can be reduced by the impact when the particles collide with the scattering plate, the inner circumferential surface of the main cylinder, the dispersion screen, etc. It is separated from the particles by being rubbed against a dispersion screen, classified by air, and collected in a dust collector, so fine powder below a specified particle size can be effectively removed in a short time, and operating costs can be saved. can do. In addition, since the main body cylinder has a vertical axis, the entire device can be made smaller and the installation area can be narrower.
Equipment costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is a plan view of the dispersion screen. In the figure, 1...main cylinder, 2...hopper, 3...
Flexible container bag, 4... Chute, 5... Flow rate adjustment gate, 7... Scattering plate, 9a, 9b, 9c...
Dispersion screen, 10... air blower, 11... dust collector.

Claims (1)

[Claims for Utility Model Registration] A main body cylinder with a vertical shaft, and a hopper on the top of which is used to drop and supply filler material for the sliding nozzle,
a chute for dropping the filler raw material from the lower part of the main body cylinder into a predetermined container; the hopper is provided with a flow rate adjustment gate that adjusts the amount of the filler raw material falling and supplied to the main body cylinder; Inside the main cylinder, a scattering plate for dispersing the filler raw material that is supplied falling and a dispersion screen that separates fine powder from the filler material scattered by the scattering plate by the impact of the fall are arranged vertically at appropriate intervals. On the other hand, a blower device that supplies airflow with a predetermined air volume and speed from below the dispersion screen to the main body cylinder, and a dust collector that collects the fine powder separated from the filler raw material by the dispersion screen are connected. A device for removing fine powder from filling material for sliding nozzles, which is characterized by: