JPS6312093Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an aerotuck-shute for powder and granules that transports powder and granules such as cement raw materials and clinker, and that blocks the flow of gas in the route of the powder and granules. .

A typical prior art is the so-called double aerodynamic damper, for example shown in FIG.
The upper dampers 2 and 3 are brought into close contact with the lower end of the cylindrical body 1 via arms 6 and 7 by rotary shafts 4 and 5 (drivers not shown). Then, it undergoes angular displacement indicated by arrow a intermittently at predetermined intervals. At this time, the lower end of the cylinder 1 is opened and the powder inside the cylinder 1 descends. The lower dampers 9 and 10 have the same mechanism as the above-mentioned upper damper, and are 1 for the arms 6 and 7.
3 and 14 are 11 and 12 relative to the rotation support shafts 4 and 5.
corresponds. The movements of the upper dampers 2 and 3 and the lower dampers 9 and 10 are linked. When the upper damper is closed, the lower damper is open,
When the upper damper is open, the lower damper is closed.

Therefore, the descending particulate material is first deposited in the cylinder 1, and when the upper dampers 2 and 3 are opened, it descends into the cylinder 8 and is deposited therein. When the upper dampers 2 and 3 close, the lower dampers 9 and 10 open, and at this time, the powder inside the cylinder 8 descends. Therefore, since the damper path is always closed, airflow is blocked.

FIG. 2 is another prior art rotary feeder. Inside the casing 15, vanes 17 that rotate as indicated by the arrow 16 are driven to rotate around a rotating shaft 18, whereby the powder and granules supplied from the inlet 19 are discharged to the outlet 20 while being airlocked. Ru.

In the prior art so-called slat valve shown in FIGS. 3 and 3A, the cylindrical body 2
Partition disks 22 and 23 are provided at the upper and lower ends of 1 and are rotationally driven by a rotating shaft 28 (driver not shown). In these partition disks 22 and 23, an inlet 24 and an outlet 25 are respectively formed at different positions in the circumferential direction. Inside the cylinder 21, a plurality of partition walls 23 extending in the radial direction are provided between the protection cylinder 27 of the rotating shaft 28 and the cylinder 21.
A space formed by the cylindrical body 21 and the partition disks 22 and 23 is divided by a partition wall 26.
As a result, the powder and granules descend from the rotating inlet 24 into the divided cylinders 21 and are temporarily deposited there. Exit 25 then rotates
When the particles are located directly below the powder deposited inside the cylinder 21, they sequentially descend to the outside of the cylinder 21 through the outlet 25. In this manner, the path between the inlet 24 and the outlet 25 of this slot valve is always blocked by the plurality of partition walls 26, so that the air flow is aerolocked.

Each of these prior art techniques requires means for driving the dampers 2, 3, the vanes 17, and the partition disks 22, 23, and requires a large amount of manpower and time for maintenance and inspection thereof. In addition, the powder and granules that are conveyed have a wide range of shapes, from lumps to fine powders, and even those that contain water. It is difficult to transport and is prone to wear or jamming, especially in sliding parts. Moreover, each of these prior art techniques has the problem that the supply flow rate of the powder or granular material is intermittent and pulsating, and that in a large-capacity configuration, the noise is large.

The purpose of this invention is to have a simple structure, easy repair, long life, and to be able to transport powder and granular materials continuously at a uniform flow rate, and to reduce noise generation. An object of the present invention is to provide an improved aerobics chute for powder and granular materials.

The present invention extends roughly vertically, has an airtight peripheral wall, has a horizontally zigzag curved path for the powder and granules, and has an outer periphery for the flow of the powder and granules to flow continuously and descend. This is an aerodynamic chute for powder and granular material, characterized in that the portion contacts the upper surface of the path over the entire length in the width direction, and contacts the side walls at both ends in the width direction.

FIG. 4 is a longitudinal sectional view of an embodiment of the present invention,
FIG. 5 is a left side view thereof. This aerodynamic chute 1 extends roughly vertically and is bent in a zigzag manner horizontally within one vertical plane (that is, its projection on the horizontal plane), that is, left and right in FIG. A body channel 32 is formed.
The cross section of the aerodynamic chute 31 perpendicular to the axis is square, as clearly shown in FIG.

As shown by arrow 33, powder such as cement raw material and clinker is supplied from an upper inlet 34. The granular material 35 is transported via the guide surfaces 36, 37, 38, 39 of the air chute 31. Ends 35a and 35b of the powder 35 in the width direction (left and right in FIG. 6) contact side walls 40 and 41 that are connected to the guide surface 36. Guide surface 36, 37, 3
Reference numerals 8 and 39 form upper surfaces facing above the path through which the powder and granular material flows, and the outer periphery of the flow of the powder and granular material contacts these guide surfaces 36, 37, 38, and 39 over the entire length in the width direction. As a result, the powder and granular material 35 is connected to the broken line 4
2, the flowing gas can be blocked. This gas 42 may flow from bottom to top as shown in FIG. 4, or vice versa, and may flow from top to bottom. It is then blocked. As shown in FIG. 7, such an aerodynamic chute 31 is constructed by vertically connecting a cylindrical body 43 having an axis obliquely inclined with respect to a circular line in a zigzag manner by flanges 44 and 45. may be configured.

According to these embodiments, the gas is blocked by the so-called material curtain formed by the powder 35, so it is desirable that the layer thickness d1 (see FIG. 6) of the powder 35 is large. Therefore, the distance d2 between the side walls 40 and 41 of the aerodynamic chute 31 is
is made smaller, thereby reducing the thickness d1 of the granular material 35
It is devised to make it thicker.

FIG. 8 is a sectional view of another embodiment of the present invention.
In this embodiment, the cylindrical body 43 shown in FIG.
are connected by a flange joint to form a zigzag-curved route for the powder and granular material. What should be noted is that a rocking plate 46 is attached to the upper part of the cylinder 43 to hold the powder and granular material 35.
It is swingably supported around a support shaft 47 extending horizontally in the width direction. FIG. 9 shows a front view of the swing plate. When the powder or granular material 35 is not being supplied, the lower end of the rocking plate 46 contacts the lower end 36A of the guide surface 36 of the cylinder 43 that guides the powder or granular material 35, as indicated by reference numeral 48, and hangs down. ing. Powder material 35
When the powder is supplied as shown by the arrow 33, the powder 35 is discharged through the guide surfaces 36, 37, 38, and 39. This granular material 35 angularly displaces the rocking plate 36, and other rocking plates 4 similar to this rocking plate 46
9, 50, 51 are opened, whereby the powder 35
can be transported while creating a so-called malarial curtain to aerobize the gas.

When the granular material 35 is not supplied, the rocking plate 46,
49, 50, and 51 close the passage, thereby blocking the upward airflow.

The rocking plates 46, 49, 50, 51 are made of steel, rubber,
It may also be made of plastic or other materials.

According to the embodiment shown in FIGS. 8 and 9, airlock is also performed even when the powder 35 is not supplied.

FIG. 10 is a sectional view of still another embodiment of the present invention, and FIG. 11 is a right side view thereof. In this embodiment, a rectangular cylindrical body 52 with a uniform cross section perpendicular to the axis is used.
Plate bodies 53, 54, 55, 5 extending horizontally to
6 and 57 are fixed vertically facing each other. There are arrow marks 3 on these plates 53, 54, 55, 56, 57.
The powder and granular material 35 supplied as shown in 3 is indicated by reference numerals 58 to 58.
It is deposited as shown in 61 to make the flow of the powder and granular material 35 smooth. According to this embodiment, the particles 58 to 61 deposited on the plates 53 to 57 are
4 to 57 to prevent wear. Such an embodiment has a simple structure and is excellent in productivity.

As another embodiment of the present invention, plate bodies 53, 54,
55, 56, and 57 may be provided to be inclined along the flow of the powder or granular material 35.

In the embodiment shown in FIGS. 10 and 11, a plurality of plates 53 to 57 are fixed to a single cylinder 52, but as another embodiment of the present invention, FIG. As shown in , a plurality of short cylindrical bodies 52a to 52d may be flange-coupled, and plates 53 to 57 may be individually constructed on these short cylindrical bodies 52a to 52d, and an aerodynamic system configured in this way may be used. The side view of the trunk is shown in FIG. 13, and the short cylindrical body 52a is shown in FIG. 14.
A plate 53 which also serves as a flange is fixed to the upper end surface of the short cylinder 52a, and a hole 63 through which the raw material passes is formed. The remaining short cylinders 52b to 52d also have a similar configuration.

FIG. 15 is a sectional view of still another embodiment of the present invention. This embodiment is similar to the embodiment shown in FIGS. 10 and 11, and corresponding parts are provided with the same reference numerals. What should be noted is that the support shaft 6 is located directly below the plate body 53.
Similarly, the plate bodies 54, 55, 56, 57 have support shafts 66,
Swing plates 69, 70, 71 are pivotably supported by 67, 68 so as to be swingable around a horizontal axis. According to such a configuration, the powder and granular material that is descended is moved by the rocking plate 6.
5, 69, 70, and 71 are pushed out and flowed down to block the flow of gas by the material curtain.
When the powder is not flowing down, the swing plates 65, 6
9, 70, and 71 block the upward flow of gas.

As described above, according to the present invention, the structure is extremely simple and productivity is excellent, and since material sealing can be performed even without a driving part, inspection and repair can be simplified. In addition, since there is no sliding part, the powder or granules do not get caught, and powders or granules with various properties, such as lumps, fine powders, etc.
Moisture-containing powder and granular materials can be transported without any hindrance. Further, according to the present invention, continuously supplied powder or granular material can be supplied continuously and smoothly without pulsation. Further, generation of noise can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a prior art double air damper, FIG. 2 is a sectional view of another prior art rotary feeder, FIG. 3 is a perspective view of yet another prior art slat valve, and FIG. 3A is a sectional view of another prior art rotary feeder. 3 is a plan view of the slat valve shown in FIG. 4, FIG. 4 is a sectional view of an embodiment of the present invention, FIG. 5 is a side view of the embodiment shown in FIG. 4, and FIG. FIG. 7 is a perspective view of a part of another embodiment; FIG. 8 is a sectional view of another embodiment of the present invention;
9 is a sectional view taken from the cutting plane line - in FIG. 8, FIG. 10 is a sectional view of another embodiment of the present invention, and FIG. 11 is a side view of the embodiment shown in FIG. 12 is a sectional view of another embodiment of the present invention, FIG. 13 is a side view of the embodiment shown in FIG. 12, and FIG. 14 is a cross-sectional view of the embodiment shown in FIGS. 12 and 13. A partial perspective view, FIG. 15 is a sectional view of another embodiment of the present invention. 31... Cylindrical body, 32... Route, 35... Powder, 40, 41... Side wall, 53, 54, 55, 5
6, 57...Plate, 46, 49, 50, 51, 6
5, 69, 70, 71... rocking plate.

Claims (1)

[Scope of Claim for Utility Model Registration] Powder and granule that extends roughly vertically, has an airtight peripheral wall, has a path for granular material that curves horizontally in a zigzag manner, and that continuously flows and descends. An aerobic chute for powder and granular material, characterized in that an outer circumferential portion of the flow contacts the upper surface of the path over the entire length in the width direction, and contacts side walls at both ends in the width direction.