JP2001130744A - Powder and granular material transfer device and water treatment facility using powder and granular material transfer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powder and granular material transfer device capable of smoothly transferring powder and granular materials cut out from a powder and granular material storage tank without generating clogging by uniformly mixing the powder and granular materials with air and capable of transferring them to a plurality of target places. SOLUTION: In a powder and granular material transfer device, a mixing tank 12 having an air inflow port 13 and a mixture outflow ports 14, 15 is arranged on the lower end of a powder and granular material storage tank 11, powder and granular materials C cut out from the powder and granular material storage tank 11 and air A flowing from the air inflow port 13 are mixed with each other in the mixing tank 12, and the powder and granular materials mixed with air are transferred from the mixture outflow ports 14, 15 to specified places through transfer pipes. The transfer pipes 17, 18 are connected to a plurality of mixture outflow ports 14, 15 to transfer powder and granular materials to a plurality of target places.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a granular material transfer device, and more particularly to activated carbon (dry carbon) used in water treatment equipment.
The present invention relates to a powder and granule transfer device for transferring powder and granules such as slaked lime and dried sludge to a predetermined place, and to a water treatment facility using the powder and granule transfer device.

[0002]

2. Description of the Related Art In sedimentation basins and landing wells of water treatment facilities, to remove off-flavor-causing substances, trihalomethane and its precursors, and other organic substances that cannot be removed by ordinary water purification treatment, the water content is 5% or less. Dry activated carbon is being injected. In order to prevent the scattering of dust and transfer efficiency, a method of transferring the dry activated carbon to the injection place by air using a powder transfer pipe or a pressurized method or a suction method by air is used. Have been done.

FIG. 1 is a diagram showing a schematic configuration of a conventional powder and granular material transfer apparatus of this kind. In FIG. 1, reference numeral 1 denotes a granular material storage tank for storing a granular material such as activated carbon or slaked lime, and a granular material extracting device 2 is provided below the granular material storage tank 1; A transfer pipe 3 is arranged at a lower end of the body extractor 2.

[0004] In the granular material transfer apparatus having the above structure, the granular material cut out from the granular material storage tank 1 into the transfer pipe 3 by the granular material cutting device 2 is compressed or sucked air. It is transported in a direction indicated by arrow A while being mixed with air.

However, in the above-described conventional granular material transfer apparatus, it is difficult to make the mixing of the granular material transferred directly below the granular material cutting machine 2 and the air uniform, so that the granular material cut-out device is not used. There is a problem that clogging by the granular material easily occurs immediately below the machine 2. There is also a problem that it is difficult to structurally provide a plurality of granular material transfer pipes so as to transfer the granular material to a plurality of destinations.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to uniformly mix powder and granular material cut out from a granular material storage tank with air to cause clogging. It is an object of the present invention to provide a powder and granular material transfer device that can smoothly transfer without any trouble, and a water treatment facility using the powder and particle material transfer device.

Further, the present invention provides a powder / particle transfer apparatus and a powder / particle transfer apparatus capable of uniformly mixing powder / particles cut out from a powder / particle storage tank with air and simultaneously transferring the powder / particles to a plurality of destinations. The purpose is to provide the used water treatment equipment.

[0008]

According to a first aspect of the present invention, there is provided a powder and granule storage tank for storing powder and granules, and a transfer pipe disposed below the powder and granule storage tank. Have,
An air inlet at the lower end of the granular material storage tank in a granular material transfer device for transferring the granular material cut out from the granular material storage tank by a cutting machine using the transfer pipe by air using a pressurizing method or a suction method. ,
A mixing tank having a mixture outlet is provided, and the powder and granules cut out from the powder storage tank and the air flowing in from the air inlet are mixed in the mixing tank, and the mixture is passed through the transfer pipe from the mixture outlet. It is characterized in that the granules mixed with air are transferred to a predetermined place.

By disposing the mixing tank at the lower end of the powder storage tank as described above, the powder cut out from the powder storage tank is uniformly mixed with air in the mixing tank. As a result, the granular material is transferred to a predetermined place through the transfer pipe without causing clogging.

[0010] The invention described in claim 2 is the same as the claim 1.
Wherein the shrinking portion having a small cross-sectional area is provided at the air inlet and the mixture outlet.

As described above, the provision of the contraction portions at the air inlet and the mixture outlet allows the flow velocity of the air flowing into the mixing tank to be increased, and the air having the high flow velocity is increased in the mixing tank. Since a swirling flow is generated, the powder and granules flowing into the mixing tank are uniformly mixed with air by the swirling flow. A mixture of air and powder is also ejected at a high speed into the transfer pipe through the contracted portion of the mixture outlet. As a result, the powders can be smoothly transferred without causing clogging.

Further, the invention described in claim 3 is the first invention.
Alternatively, in the powder and granular material transfer device according to 2, a plurality of mixture outlets are provided in the mixing tank, and a powder and particle transfer pipe is connected to each of the plurality of mixture outlets. .

As described above, a plurality of mixture outlets are provided in the mixing tank, and the powder transfer pipes are connected to each of the mixture outlets, so that the powder can be transferred to a plurality of destinations. Can be.

According to a fourth aspect of the present invention, there is provided a water treatment facility having a granular material transfer device for transferring a granular material from a predetermined location to a predetermined location. 4. The apparatus for transferring a granular material according to any one of the above items 3 to 3.

As described above, by using the granular material transfer device according to any one of claims 1 to 3 for a granular material transfer device of a water treatment facility, activated carbon, slaked lime, dried sludge and the like can be efficiently used. The granular material can be transferred from a predetermined place to a predetermined place, and the efficiency of water treatment can be improved.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a diagram showing a schematic configuration of the granular material transfer device according to the present invention. This granular material transfer device is
A mixing tank 12 is provided at a lower portion of the powder material storage tank 11 for storing the powder material.
Has been arranged. The mixing tank 12 is provided with an air inlet 13 and a plurality (two in the figure) of mixture outlets 14 and 15. The air inlet 13 is connected to an air pipe 16, and the mixture outlets 14 and 15 are connected to transfer pipes 17 and 18, respectively. A granular material cutting machine 19 is disposed between the granular material storage tank 11 and the mixing tank 12. The air inlet 1
3. The mixture outlets 14 and 15 are provided with shrinking portions 13a, 14a and 15a, respectively, for reducing the cross-sectional area.

In the apparatus for transferring powdery and granular materials having the above structure, air A flows into the mixing tank 12 through the air pipe 16.
3 flows in by a pressure method or a suction method. The air A swirls in the mixing tank as shown by arrow B. On the other hand, the granular material C cut out from the granular material storage tank 11 by the granular material cutting machine 19 flows in from the top of the mixing tank 12, and the mixing tank 1
It mixes with air A in 2 and flows out of mixture outlets 14 and 15 into transfer pipes 17 and 18. The transfer pipes 17 and 18 respectively extend to the destination where the powder is transferred, and the powder mixed with air in the mixing tank 12 is transferred to the destination.

The air inlet 13 of the mixing tank 12 is provided with the contraction portion 13a as described above, and the flow rate of the air A in the air pipe 16 (for example, 10 m / s) passes through the contraction portion 13a. Since it is accelerated (for example, 20 to 30 m / s) and flows into the mixing tank 12 as a jet, the air A and the granular material C are uniformly mixed in the mixing tank 12. Also, the contraction portions 14a, 15a are provided at the mixture outlets 14, 15, respectively.
The mixture D of the air A and the granular material C has a high flow rate (for example, 20 to 30) from the contraction portions 14a and 15a.
m / s) and is discharged into the transfer pipes 17 and 18 as a jet.

In the above-described embodiment, a plurality of (two in the figure) mixture outlets 14 and 15 are provided in the mixing tank 12, and transfer pipes 17 and 18 are connected to each of the outlets 14 and 15, so that the powder and granules can be placed at a plurality of locations. Although an example in which the powder is transferred has been described, it is natural that only one mixture outlet is required when the powder is transferred to one place.

As described above, the powder and granular material transfer device according to the present invention is provided with the mixing tank 12 at the lower end of the powder and particle storage tank 11 so that the powder and granular material cut out from the powder and particle storage tank 11 is provided. Is uniformly mixed with air in the mixing tank 12. As a result, the granular material is transferred through the transfer pipes 17 and 18 without causing clogging. Air inlet 13 and mixture outlet 1
The contraction portions 13a, 14a, and 15 having small cross-sectional areas
a, the flow rate of the air A flowing into the mixing tank 12 can be increased, and the air having the high flow velocity generates a fast swirling flow in the mixing tank 12, so that the air A flows into the mixing tank 12. The powder C is uniformly mixed with the air by the swirling flow, so that the powder C can be smoothly transferred.

FIG. 3 is a view showing the configuration of an apparatus for injecting dry activated carbon into a sand basin or a landing well of a water treatment facility using the granular material transfer apparatus according to the present invention. In FIG. 3, portions denoted by the same reference numerals as those in FIG. 2 indicate the same or corresponding portions. In FIG. 3, reference numeral 20 denotes a sand basin or landing well, in which an injector 21 for injecting dry activated carbon into water is disposed.

FIG. 4 is a view showing the structure of the injector 21.
As shown, the injector 21 has a shaft 21b rotated by a motor M, and a stator tube 21a surrounding the shaft 21b. The stator tube 21a is provided with a suction port 21c.
The transfer pipe 17 of the granular material transfer device according to the present invention is connected to c. A rotor 22 is attached to the tip of the shaft 21b, and a stator 23 and a cover ring 24 are provided so as to surround the rotor 22.

When the motor M of the injector 21 is started, the rotor 22 rotates, and water flows in from the upper portion of the stator 23 as shown by an arrow E, and flows out from the lower end thereof as shown by an arrow F to flow out of the stator 23. Form a swirling flow around. Thereby, an air suction force acts on the transfer pipe 17 through the stator tube 21a. When the valves 25 and 26 in FIG. 3 are opened in this state, the mixing tank 12 is passed through the air pipe 16.
When the air flows into the inside, the air and the granular material storage tank 11
, Dry activated carbon cut out by the powder and grain extractor 19 is mixed, sent to the stator tube 21a of the injector 21 through the transfer pipe 17, and injected into water from the tip.

FIG. 5 is a diagram showing an example of a water treatment facility using the granular material transfer device according to the present invention. In FIG. 5, 3
Reference numeral 2 denotes a water intake facility, and water taken in the water intake facility 32 flows into a landing well. The landing well 33 is provided with an activated carbon injector 34 for injecting powdered and granular activated carbon having a configuration as shown in FIG. Reference numeral 31 denotes a granular material transfer device having a configuration as shown in FIG. 2, which transfers granular active carbon to an activated carbon injector 34. Activated carbon is injected into the water of the landing well 33 by the activated carbon injecting machine 34, and the water into which the activated carbon is injected flows into the mixing pond 35, and from the mixing pond 35, a floc forming pond 36, a chemical sedimentation pond 37, and a rapid filtration pond 38. The treated water 41 passes through the water purification reservoir 39 and is distributed through the water distribution reservoir 40.

As described above, by using the granular material transfer device having the structure shown in FIG. 2 as the granular material transfer device for transferring the granular active carbon of the activated carbon injecting machine 34 provided in the landing well 33, The activated carbon can be smoothly and efficiently transferred without causing clogging or the like, so that the water treatment equipment can be continuously operated efficiently and the water treatment efficiency can be greatly improved.

It should be noted that the powder / particle transfer apparatus of the present invention is not limited to a powder / particle transfer apparatus for activated carbon, slaked lime, dried sludge and the like in water treatment. That is, the present invention can be widely used for transferring powdery or granular foods or chemicals such as sugar, salt, wheat, etc. from a predetermined place to a predetermined place.

[0027]

As described above, according to the invention described in each claim, the following excellent effects can be obtained.

According to the first aspect of the present invention, by disposing the mixing tank at the lower end of the granular material storage tank, the granular material cut out from the granular material storage tank is subjected to air in the mixing tank. Therefore, the powder can be smoothly transferred to the destination through the transfer pipe without causing clogging.

According to the second aspect of the present invention, the flow rate of the air flowing into the mixing tank can be increased by providing the shrinking portions at the air inlet and the mixture outlet. The air generates a fast swirling flow in the mixing tank, and the powder particles flowing into the mixing tank are uniformly mixed with the air by the swirling flow. Since the particles are ejected into the particle transfer tube, the particles can be transferred without causing clogging.

According to the third aspect of the present invention, a plurality of mixture outlets are provided in the mixing tank, and a powder transfer pipe is connected to each of the mixture outlets. Granules can be transferred.

According to the fourth aspect of the present invention, the first aspect is provided.
The activated carbon, slaked lime, and the like are efficiently used by using the granular material transfer device according to any one of (1) to (3) in a water treatment facility.
Granules such as dry sludge can be transferred from a predetermined location to a predetermined location, and the efficiency of water treatment can be improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a conventional granular material transfer device.

FIG. 2 is a diagram showing a schematic configuration of a granular material transfer device according to the present invention.

FIG. 3 is a diagram showing a configuration example of an apparatus for injecting dry activated carbon into a sand basin or a landing well of a water treatment facility using the granular material transfer apparatus according to the present invention.

FIG. 4 is a diagram showing a configuration of an injector for injecting dry activated carbon into water.

FIG. 5 is a view showing an example of a water treatment facility using the granular material transfer device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Granule storage tank 12 Mixing tank 13 Air inlet 14 Mixer outlet 15 Mixer outlet 16 Air pipe 17 Transfer pipe 18 Transfer pipe 19 Granule extractor 20 Sand basin or landing well 21 Injector 22 Rotor 23 Stator 24 Covering 25 Valve 26 Valve 31 Granular material transfer device 32 Water intake facility 33 Landing well 34 Activated carbon injector 35 Mixing pond 36 Floc formation pond 37 Chemical sedimentation pond 38 Rapid filtration pond 39 Purification pond 40 Distribution pond 41 Treated water

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takahiro Suzuki 11-1 Haneda Asahimachi, Ota-ku, Tokyo Inside Ebara Works Co., Ltd. (72) Inventor Noriyoshi Matsunobu 11-1 Haneda Asahi-cho, Ota-ku, Tokyo Shares (72) Inventor Hiroshi Motohashi 11-1 Haneda Asahimachi, Ota-ku, Tokyo Inside the Ebara Corporation (72) Inventor Yosuke Takashima 11-1 Haneda Asahi-cho, Ota-ku, Tokyo Inside the Ebara Corporation F term (reference) 3F047 AA03

Claims (4)

[Claims] 1. A powder and granule storage tank for storing powder and granules, and a transfer pipe disposed at a lower portion of the powder and granule storage tank, wherein the powder and granules cut out from the powder and granule storage tank by a cutting machine are provided. In a powder and granular material transfer device for transferring by a pressurized method or a suction method by air through the transfer pipe, a mixing tank having an air inlet and a mixture outlet at a lower end of the powder and particle storage tank is provided, and the mixing is performed. In the tank, the granules cut out from the granule storage tank are mixed with the air flowing from the air inlet, and the granules mixed with the air are transferred from the mixture outlet to the predetermined place through the transfer pipe. A granular material transfer device characterized by performing. 2. The granular material transfer device according to claim 1, wherein a contraction portion having a small cross-sectional area is provided at the air inlet and the mixture outlet. 3. The granular material transfer device according to claim 1, wherein the mixing tank is provided with a plurality of mixture outlets, and a transfer pipe is connected to each of the plurality of mixture outlets. A granular material transfer device, characterized in that: 4. A water treatment facility comprising a granular material transfer device for transferring a granular material from a predetermined place to a predetermined place, wherein the granular material transfer device is configured as described in any one of claims 1 to 3. A water treatment facility, characterized by using the granular material transfer device described in the above.