JP3954453B2 - Discharge chute of powder feeder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a quantitative discharge chute of a powder and particle feeder.
[0002]
[Prior art]
Conventionally, as shown in FIG. 9, a granular material supply turning rod 1 is formed by a plurality of granular material accommodation notches or notches provided at equal intervals along the outer periphery of the horizontal rotor, and the granular material supply cylinder 13 is rotated from the inner side to the outer side of 13, and an elevating idler roller 15 and an elevating idler ball are provided on the outer side of the eaves 1 on the outer side. Is used to forcibly discharge the powder, and a device for forcibly discharging the quantitative powder particles downward from the discharge tube 5 provided at the outlet. Alternatively, the powder particles in the basket are compressed with compressed air. A device for discharging inside was installed in the machine casing.
[0003]
However, in the powder supply machine that supplies slaked lime, activated carbon, etc., used for dioxin countermeasures to a small number of secondary processes, the powder is attached to the inner wall surface of the discharge cylinder, making it difficult to discharge and smooth quantitative supply is possible. Therefore, there was a problem that the powder and particle feeder was difficult to withstand.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to obtain a discharge chute that can smoothly and quantitatively supply the granular material without attaching the granular material to the inner wall surface of the discharge cylinder of the granular material supply machine.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention firstly has an air suction port at the upper part of the rotating rod for supplying powder and an air discharge port at the lower part, and a discharge cylinder is provided on the discharge port side. An ejector for pneumatic transportation of the granular material descending from the discharge cylinder is provided in the transport pipe provided at the lower end of the discharge cylinder, and the inner cylinder is moved in the sliding direction and the rotation direction by interposing a gap inside the cylinder. A discharge chute for a powder and particle feeder , which is supported in a freely movable manner and is provided with an air supply port for pressurized air in the rotation direction in the gap ,
Second, the rotating rod is formed by a plurality of granular material containing notches or holes provided at equal intervals along the outer periphery of the horizontal rotor, the air suction port is formed on the upper surface covering plate, and the discharge port is formed on the lower surface supporting plate. discharge chute of the provided with the first invention, wherein the granular material feeder,
Third, an outer peripheral flange is provided on the upper part of the inner cylinder, an inner peripheral flange is provided on the upper and lower parts of the discharge cylinder, an upper outer flange is supported on the upper inner peripheral flange, and an upper and lower inner peripheral flange is provided. The discharge chute of the powder and particle feeder according to the first or second invention , wherein a small gap is interposed between the inner peripheral surface of the inner cylinder and the outer peripheral surface of the inner cylinder ,
Consists of.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
A horizontal rotor 8 having an upper surface arranged at the same level as the bottom plate 14 of the powder supply cylinder 13 is provided over the inside and outside of the supply cylinder 13, and the upper air is applied to the upper surface covering plate 9 of the rotor 8 outside the cylinder 13. A plurality of powder and granular materials are provided in which a suction port 2 is formed, a lower air discharge port 3 that coincides with the suction port 2 is provided in the lower surface support plate 10, and the rotor 8 is formed at equal intervals along the outer periphery thereof. The rotary rod 1 is passed between the suction port 2 and the discharge port 3.
[0007]
The passage is continuous rotation or intermittent rotation that stops at the position corresponding to the suction port 2 and the discharge port 3.
[0008]
As shown in FIG. 3, the rotating rod 1 is formed by a plurality of U-shaped granular material accommodation notches or circular or fan-shaped notches (not shown).
[0009]
The upper end of the discharge cylinder 5 is connected to the outer periphery of the discharge port 3 of the lower surface support plate 10. In FIG. 1, the upper (inlet side) inner peripheral flange 5 ′ of the cylinder 5 is connected, and in FIG. 2, the cylinder 5 is slightly inclined outward, and the upper (inlet side) inner peripheral flange 5 ′, the support plate 10 and The connecting cylinder 5a is interposed between the two. These discharge cylinders 5 are provided with a lower (outlet side) inner peripheral flange 5 ″, and inside the upper (inlet side) and lower (outlet side) inner peripheral flanges 5 ′, 5 ″ via small gaps t and t. The inner cylinder 6 is arranged so as to be freely movable in the rotation direction around the center line c, and an outer peripheral flange 6 ′ provided on the upper part (inlet side) of the inner cylinder 6 is arranged on the inner periphery of the upper part (inlet side) of the discharge cylinder 5. It is mounted on the upper surface of the flange 5 ', and the inner cylinder 6 is supported so as to be freely movable in the up-and-down sliding direction.
[0010]
A gap T is interposed between the inner surface of the upper (inlet side) and lower (outlet side) inner peripheral flanges 5 ′, 5 ″ between the inner surface of the discharge cylinder 5 and the outer surface of the inner cylinder 6. An air supply port (nozzle) 7 in a direction perpendicular to the discharge cylinder 5 and the inner cylinder 6 is opened in T as shown in FIGS. 5 (A) and 5 (B), and compressed air is supplied from the nozzle 7 in the direction of arrow a. To erupt.
[0011]
At the lower end (front end) of the discharge cylinder 5, an ejector 11 for transporting granular air is provided in a transport pipe 11 ′ orthogonal to or intersecting with the cylinder 5, and the transport pipe 11 ′ provided with the ejector 11 at the lower end. Communicate with. The transport pipe 11 ′ is provided with a compressed air jet 11 ″ directed toward the communication portion, and the powder particles falling from the communication portion in front of the jet port 11 ″ along the transport pipe 11 ′. Can be pneumatically transported.
[0012]
When the air a ′ ejected from the compressed air outlet 11 ″ into the transport pipe 11 ′ passes through the communicating portion with the discharge cylinder 5, the powder and air in the discharge cylinder 5 are transported to the transport pipe 11 ′. And can be pneumatically transported by the transport tube 11 ′.
[0013]
At that time, the inside of the discharge cylinder 5 becomes a negative pressure, the water in the discharge cylinder 5 and the inner cylinder 6 evaporates and drys, and the powder particles attached to the inner wall in the discharge cylinder 5 merge into the transport pipe 11 ′ by the negative pressure flow. The air is transported through the pipe 11 '.
[0014]
A small-diameter branch pipe 12 is provided from the compressed air side (inside) of the jet outlet 11 ″, and the tip of the branch pipe 12 is connected to an air supply port (nozzle) 7 of the discharge cylinder 5 via an opening / closing valve 16 to branch. The pressurized air in the pipe 12 is ejected from the air supply port 7 into the gap T in the direction (substantially tangential direction) in the direction of the arrow a (FIGS. 5A and 5B).
[0015]
The inner cylinder 6 receives a force in the direction of the arrow a by the jet air in the direction of the arrow a, and the force causes the inner cylinder 6 to collide with the upper (inlet side) and lower (outlet side) inner peripheral flanges 5 ′, 5 ″. The inner cylinder 6 rotates around the center line c while vibrating in the direction b opposite to the direction of the arrow a by the contact reaction force and vibrating (FIG. 5 (a) (b)).
[0016]
The granular material discharged from the discharge port 3 and entering the inner cylinder 6 by the vibration of the inner cylinder 6 and the rotation in the reverse direction b is not attached to the inner wall of the inner cylinder 6 and the ejection port 11 ″ of the ejector 11. The air is transported in the transport pipe 11 ′ of the ejector 11 by the compressed air that is ejected.
[0017]
In FIGS. 1 to 7, 4 is an outside air intake section, 4 ′ is an outside air inlet, and 13 ′ in FIGS. 6 to 8 is an inner cylinder of the granular material supply cylinder 13 and is discharged between the bottom plate 14 and the granular material. Has a gap. Further, 16 is a spoke that rotates along the bottom plate 14, 17 is a rotating wheel provided at the tip of the spoke 16, 18 is a plurality of scratching claws provided on the inner periphery of the rotating wheel 17, and 19 is a boss portion of the spoke 16. .
[0018]
The rotary rod 1 uses a rotary valve formed by a space between a plurality of rotary blades of a vertical rotor, and the suction port 2, the discharge port 3, the outside air intake 4, the discharge tube 5, and the inner tube 6 are set sideways. (Not shown).
[0019]
【The invention's effect】
Since the present invention is configured as described above, the quantitative powder particles discharged to the discharge tube provided on the air discharge port side of the rotating rod in the powder supply device pass through the inner tube of the discharge tube, and the inner tube There is no fear of adhering to the inner cylinder wall due to vibration, rotation and negative pressure flow, and there is an effect that the quantitative powder can be supplied to the next process from the discharge end of the discharge cylinder.
[0020]
The inner cylinder is sufficiently attached to the inner cylinder wall by the minute vibration around the center line caused by the minute pressure air sent into the gap and the slight up and down vibration caused by the sliding of the upper (inlet side) outer peripheral flange. Is prevented.
[0021]
Further, the ejector provided at the discharge end of the discharge tube generates a negative pressure flow in the discharge tube, and therefore, the fixed particles can be smoothly transported by air without attaching the powder particles to the inner wall of the discharge tube.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a discharge chute of a powder and particle feeder according to the present invention.
FIG. 2 is a longitudinal sectional view of an inclined discharge cylinder.
FIG. 3 is a plan view taken along line 1A-A in FIG.
4 is a longitudinal sectional view taken along the line 1B-B in FIG.
FIG. 5A is a plan view taken along line 4C-C in FIG.
(B) The figure is a partially enlarged view of (b).
FIG. 6 is a plan view of a powder and particle feeder.
7 is a front view of FIG. 6. FIG.
FIG. 8 is a vertical cross-sectional view showing a state in which an inner cylinder is inclined.
FIG. 9 is a layout view of a conventional rotating rod for supplying powder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rotation rod for powder supply 2 Air suction port 3 Air discharge port 4 Outside air intake part 5 Discharge cylinder 5 'Upper inner peripheral flange 5 "Lower inner peripheral flange T Gap t Small gap 6 Inner cylinder 6' Upper outer peripheral flange 7 Air supply port (nozzle)
8 Horizontal rotor 9 Upper surface covering plate 10 Lower surface supporting plate 11 Ejector 12 for air transportation of granular material Small diameter branch pipe

Claims (3)

An air suction port and an air discharge port are provided at the upper part of the rotating rod for supplying the granular material, and a discharge tube is provided on the discharge port side. The discharge tube is provided in the transport pipe provided at the lower end of the discharge tube. An ejector for pneumatic transportation of the granular material descending from the inside is provided, and the inner cylinder is supported freely in the sliding direction and the rotating direction by interposing a gap inside the cylinder, and the gap is rotated in the rotating direction. A discharge chute for a powder and particle feeder provided with an air supply port for pressurized air .   The rotating rod is formed by a plurality of granular material accommodating notches or holes provided at equal intervals along the outer periphery of the horizontal rotor, and the air suction port is provided on the upper surface cover plate and the discharge port is provided on the lower surface support plate. The discharge chute of the granular material supply machine according to claim 1.   An outer peripheral flange is provided at the upper part of the inner cylinder, an inner peripheral flange is provided at the upper and lower parts of the discharge cylinder, an upper outer flange is supported on the upper inner peripheral flange, and inner circumferences of the upper and lower inner peripheral flanges The discharge chute of the granular material supply machine according to claim 1 or 2, wherein a small gap is interposed between the surface and the outer peripheral surface of the inner cylinder.

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