JPH0632433U - Dispensing device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a dispensing device that can be shared by multiple silos, has a small amount of coal to be dispensed while passing through a silo that does not require dispensing, and has low passage resistance, which enables high-speed traveling. To do. [Structure] A main body 12 provided in a silo portion 1a provided above the central groove 6 on the bottom surface of the chute 2 so as to cover the central groove, and capable of running along the central groove, and attached to the lower surface of the main body, A swing member 14 that can swing about a vertical swing axis A that passes through substantially the center of the groove, and a swing member 14 that is attached to the lower surface of the swing member and is spaced from the swing shaft in opposite directions.
Two payout paddles 16 each rotatable about one vertical rotation axis B are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dispensing device for dispensing a powder or granular material from a silo.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 3, for example, as shown in FIG. 3, a large number (eg, a diameter of 60 m) of storage silo 1 is provided with a plurality of chutes 2 at the bottom of a storage silo, and the lower end of this short is stored. In addition, the discharging device 3 is provided, and the discharging device discharges the granular material 4 (for example, coal) filled in the silo from the bottom surface of the chute.

As shown in FIG. 4, for example, such a conventional dispensing device 3 has a dispensing paddle 5 that rotates around a vertical center axis, and the tip portion of this paddle deposits on the bottom surface of the chute 2. The powder and granules 4 are broken, and the powder and granules are discharged to a conveyor 7 provided at the bottom of the suit through a groove 6 provided at the center of the bottom of the chute. The conveyor 7 extends horizontally through the lower part of the chute 2 (perpendicular to the paper surface in the figure), and the chute 2 is also formed linearly along the conveyor 7. Further, the dispensing device 3 is provided with traveling wheels 8, and the paddle is rotated while traveling on the rail 9 along the conveyor so that the granular material 4 can be dispensed.

[0004]

[Problems to be solved by the device]

 In a thermal power plant that handles a large amount of coal, a plurality of large-diameter silos 1 described above are provided, and coal is delivered by a conveyor 7 that extends horizontally through the plurality of silos. Coals with different properties (for example, sulfur content and nitrogen content) are stored in multiple silos, and coal is blended by discharging different coals from multiple silos onto the same conveyor 7 to produce combustion exhaust gas. The amount of SOx and NOx inside is controlled.

However, when the conventional dispensing device 3 is used in such a power plant, even if the paddle 5 is run without rotating, the tip of the paddle collapses the granular material and the granular material is dispensed. was there. For this reason, when using multiple silos, if the dispensing device is shared for the same conveyor, coal will be dispensed from this silo while passing through the silo that is not used by the dispensing device, and the properties of the coal after blending will be different. There was a problem that the amount could not be controlled accurately. Such unnecessary payout amount could reach 10 to 20% of the normal payout amount. In addition, since the tip of the paddle comes into contact with the coal during such passage, there is a problem that running resistance is large and running at high speed is not possible.

The present invention was created to solve such problems. That is, an object of the present invention is to provide a dispensing device that can be shared by a plurality of silos, has a small amount of coal to be dispensed while passing through the silo, has a low running resistance, and can be driven at a high speed.

[0007]

[Means for Solving the Problems]

 According to the present invention, a main body is provided in a silo part provided above the central groove on the bottom surface of the chute so as to cover the central groove, and the main body is movable along the central groove. A swinging member capable of swinging about a vertical swinging axis passing through substantially the center of the groove, and two vertical swinging members mounted on the lower surface of the swinging member and spaced in opposite directions from the swinging axis. There is provided a payout device comprising two payout paddles each rotatable about a rotation axis.

According to a preferred embodiment of the present invention, the two payout paddles are adapted to rotate in mutually opposite directions.

[0009]

[Action]

 According to the above configuration of the present invention, a swing member that is attached to the lower surface of the main body and is swingable around a vertical swing axis that passes through substantially the center of the central groove, and is attached to the lower surface of the swing member. And two payout paddles, each of which is rotatable about the vertical axis of rotation and spaced apart from each other in the opposite direction from the swing axis, are provided, so that the axis of rotation of each of the two payout paddles has a central groove. If the rocking member is rocked so as to be positioned substantially at the center, the tip end portion of the paddle can be separated from the granular material. As a result, even if the dispensing device travels along the central groove on the bottom surface of the chute, the tip of the paddle does not come into contact with the granular material, so that the granular material can travel without being dispensed. Therefore, when a plurality of silos are used, the payout device can be shared by the same conveyor. Further, the property and amount of the coal after blending can be accurately controlled without discharging the coal from another silo which is not used during the passage of the discharging device. Furthermore, since the tip of the paddle does not come into contact with the coal during such traveling, traveling resistance is small and high-speed traveling is possible.

If the swinging member is swung so that the rotation axes of the two payout paddles are separated from the center of the central groove, the tip portions of the paddles come into contact with the granular material and the granular material is discharged. be able to. Further, in particular, when the two payout paddles are rotated in the opposite directions, the reaction forces received from the powder particles during the payout are canceled out each other, so that the torque required for swinging can be reduced.

[0011]

【Example】

 Preferred embodiments of the present invention will be described below with reference to the drawings. In each figure, the same symbols are used for common parts. FIG. 1 is an overall side view of a dispensing device according to the present invention. In this figure, a conveyor 7 is provided at the bottom of the shoe 2 and extends horizontally (perpendicular to the paper surface in the figure) through a plurality of silos. A central groove 6 extending along the conveyor 7 is provided at the center of the bottom surface of the chute 2. Further, the inner surface of the chute 2 is formed into a plane shape inclined along the conveyor 7 (rather than a conical shape). With such a configuration, the powder or granules 4 can be moved to the lower end of the chute 2 by its own weight, and the powder or granules 4 dropped from the groove 6 are supplied by the conveyor 7 to, for example, a combustion device (not shown) outside the silo. be able to.

The dispensing device 10 according to the present invention is mounted on the lower surface of the main body 12 and the main body 12 that can run along the central groove 6 on the bottom surface of the chute 2, and is vertically swinging through almost the center of the central groove 6. An oscillating member 14 that can oscillate around the moving shaft A, and two vertical rotating shafts B that are attached to the lower surface of the oscillating member 14 and are spaced from each other in opposite directions from the oscillating shaft A. There are two payout paddles 16 that are each rotatable around the heart.

The main body 12 is further provided with traveling wheels 8, which are capable of traveling on rails 9 provided along the conveyor 7 in the portion 1 a of the silo. The main body 12 is provided inside the silo portion 1a provided in the upper part of the central groove 6 so that the powder body 4 does not enter inside. The main body 12 extends horizontally along the central groove 6 and is provided with necessary driving mechanisms inside, that is, a wheel driving device, a turning mechanism, and the like.

FIG. 2 is a plan view of the payout device 10 of FIG. 1 seen from above. In this figure, the main body 12 is omitted for clarity of the drawing. The oscillating member 14 has a position in which the rotation axis B of the two paddles 16 is located substantially at the center of the central groove 6 (shown by a chain double-dashed line in the figure) and the rotation axis B of the two payout paddles 16 is the central groove. It is possible to swing between a position far from the center (shown by the solid line in the figure). The swing angle is about 45 ° in the illustrated example, but is not limited to this angle, and may be, for example, 60 ° or 90 °. Further, the swing mechanism includes, for example, a large gear fixed to the swing member around the swing axis A, and a drive device having a small gear meshing with the large gear and fixed to the main body 12. Further, as the driving device, an electric motor, a hydraulic motor, a hydraulic cylinder, or the like may be used, and a link mechanism, a chain mechanism, or other transmission means may be used.

The dispensing paddle 16 is provided with a plurality of scraping arms 17, each arm 17 is curved in an arc shape, and its tip is formed to be tangential. The diameter of the paddle 16 should be as large as possible, provided that the paddles do not contact each other. With this configuration, it is possible to break up the granular material accumulated at the tip, take in the granular material 4 between the arms 17, move the granular material 4 horizontally to the central groove 6, and drop it from the groove 6. .

As shown by the arrows in the figure, the two payout paddles 16 are adapted to rotate about the rotation axis B in opposite directions. Such a rotating mechanism is based on, for example, fixing a gear that is rotatable about the rotation axis B to the paddle 16 and driving the gear by a drive device provided on the connecting member 14. Reverse rotation of the paddle can be easily accomplished by changing the number of gear trains between the paddle 16 and the drive. The driving device may be an electric motor or a hydraulic motor. With such a configuration, the reaction forces received from the powder and granules during the dispensing are canceled each other, and the driving torque required for the swing can be reduced.

As described above, according to the configuration of the present invention, the swing member 14 attached to the lower surface of the main body 12 and swingable about the vertical swing axis A passing substantially through the center of the central groove 6. And two payout paddles 16 attached to the lower surface of the rocking member 14 and rotatable about two vertical rotation axes B spaced apart from each other in the opposite direction from the rocking axis A. By swinging the swinging member so that the rotation axis B of the two payout paddles 16 is located substantially in the center of the central groove, the tip end portion of the paddle can be separated from the granular material. As a result, even if the dispensing device travels along the central groove on the bottom surface of the chute, the tip of the paddle does not come into contact with the granular material, so that the granular material can be traveling without being dispensed. Therefore, when a plurality of silos are used, the payout device can be shared by the same conveyor. Further, the property and amount of the coal after blending can be accurately controlled without discharging the coal from another silo that is not used while passing through the discharging device. Further, since the tip of the paddle does not come into contact with the coal during such traveling, traveling resistance is small and traveling at high speed is possible.

If the swinging member is swung so that the rotation shafts of the two payout paddles are separated from the center of the central groove, the tip ends of the paddles come into contact with the granular material and the granular material is discharged. be able to. Further, in particular, when the two payout paddles are rotated in the opposite directions, the reaction forces received from the powder particles during the payout are canceled each other, so that the driving torque required for rocking can be reduced.

[0019]

[Effect of device]

 Therefore, the dispensing device according to the present invention has various effects such that it can be shared by a plurality of silos, the amount of coal dispensed during passage through the silo is small, the traveling resistance is small, and high-speed traveling is possible. .

[Brief description of drawings]

FIG. 1 is an overall side view of a dispensing device according to the present invention.

2 is a plan view of the dispensing device of FIG. 1. FIG.

FIG. 3 is an overall cross-sectional view of a silo using a conventional dispensing device.

FIG. 4 is an overall side view of a conventional dispensing device.

[Explanation of symbols]

 1 Silo 1a Part of silo 2 Chute 3 Discharge device 4 Powder granules 5 Discharge paddle 6 Central groove 7 Conveyor 8 Wheels 9 Rail 10 Discharge device 12 Main body 14 Swing member 16 Discharge paddle 17 Scraping arm A Swing shaft B Rotating shaft

Claims (2)

[Scope of utility model registration request] 1. A main body provided in a silo portion provided above the central groove on the bottom surface of the chute so as to cover the central groove, the main body being able to run along the central groove, and the central groove attached to the lower surface of the main body. A swinging member swingable about a vertical swinging axis passing through substantially the center of the swinging member, and two vertical rotation members attached to the lower surface of the swinging member and spaced from each other in opposite directions from the swinging shaft. A payout device comprising: two payout paddles each rotatable about an axis. 2. The dispensing device according to claim 1, wherein the two dispensing paddles are adapted to rotate in mutually opposite directions.