JP2000255781A - Pneumatic transport type particulate matter storage and supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device capable of storing a road antifreezing agent and loading it onto a spraying vehicle without using a disposal flexible container bag. SOLUTION: In this device, granular halite as an antifreezing agent is put into a load receiving hopper 104 and fed therefrom into a first storage hopper 110 through a first cyclone 106 by pneumatic transport. The granular halite in the first storage hopper 110 is fed into a third storage hopper 122 through a second cyclone 118 and stored therein. The first and second cyclones 106, 118 respectively have collision crushing plates to crush the halite particles. The generated minute particles are stored in a second storage hopper 116 and used for generation of salt water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a granule storage and supply device for storing granules such as a road deicing agent and loading the granules on a spray truck.

[0002]

2. Description of the Related Art A predetermined amount of a road deicing agent such as rock salt is stored in a predetermined road maintenance station in advance, loaded on a deicing agent spraying vehicle as required, and sprayed on a road surface. Deicing agents such as rock salt are generally obtained in particulate form. Conventionally, such granular antifreeze has been transported in a disposable bag of about 1 ton made of synthetic fiber called a flexible container bag and stored in a road maintenance station. To load the deicing agent into the deicing vehicle at the maintenance station, the worker lifts the flexible container bag containing the deicing agent on the crane with a crane and breaks the bottom of the bag. Add the agent to the sprayer. Used flexible container bags are disposed of.

[0003]

Since antifreeze is consumed in large quantities, a large number of flexible container bags are discarded in one winter. For this reason, the maintenance cost of the road increases, and a problem of waste disposal occurs. SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for storing and supplying an antifreezing agent and other powders which can be stored and loaded on a spraying vehicle without using a flexible container bag, and which is inexpensive to maintain. It is in. Another object of the present invention is to provide a granular material storage and supply device which can be built at a limited cost and can be operated labor-saving at a low maintenance cost.

[0004] In order to prevent freezing in a tunnel, it is preferable to spray an antifreezing agent in the form of an aqueous solution such as salt water. For this purpose, it is necessary to dissolve a deicing agent such as rock salt in water to generate salt water. Conventionally, in order to generate salt water, rock salt obtained in the form of coarse particles is crushed or crushed rock salt is purchased in order to make the salt easily soluble in water. For this reason, management of the antifreezing agent has been troublesome. Accordingly, another object of the present invention is to provide a method for storing and storing coarse-grained rock salt as a raw material, which is capable of automatically generating and storing relatively fine rock salt required for generating salt water for tunnel application. An object of the present invention is to provide a body storage and supply device.

[0005]

SUMMARY OF THE INVENTION The above object is achieved by the pneumatically transportable powder storage and supply apparatus of the present invention. In a simple embodiment of the invention, the pneumatically transported powder storage and supply device comprises a receiving hopper into which the powder is loaded;
An air inlet connected to a discharge feeder of the receiving hopper via a first air transport line, an air outlet, a powder material outlet, and an impingement crush plate disposed facing the air inlet. A first storage hopper connected to the granule outlet of the cyclone and storing relatively coarse (ie, relatively coarse) granules separated by the cyclone; A solid-gas separation device connected to the air outlet of the cyclone via a second air transport line to separate relatively fine powder from the air accompanying the air flowing out of the air outlet of the cyclone; A second storage hopper for storing relatively fine powder separated by the separation device; and a vacuum source for applying a negative pressure to the solid-gas separation device and the air transport line. Things.

[0006] In the apparatus of the present invention, the granular material to be stored is put into a receiving hopper in a bulk form from a powder transportation vehicle and stored in the storage hopper of the apparatus by pneumatic transportation. Therefore, the flexible container
Since the bags are not disposable, the problem of industrial waste disposal can be solved and road maintenance costs can be reduced.

In addition, a cyclone is provided in the pneumatic transport line from the receiving hopper to the first storage hopper, and the cyclone is provided with a collision crush plate facing the air intake. The powder and the like sucked into the crushing plate are crushed by colliding with the crushing plate to generate relatively fine powder. The generated relatively fine powder is sent to a solid-gas separator, separated from air, and stored in the second storage hopper. By using the cyclone having the crushing function provided with the collision plate as described above, the relatively coarse particles can be pneumatically transported from the receiving hopper to the first storage hopper and stored in the first storage hopper. At the same time, the granules are finely pulverized and the fine granules are automatically stored in the second storage hopper. The granules are stored in the respective storage hopper and are ready for use. In this way, from one kind of raw rock salt, not only coarse-grained rock salt for direct spraying, but also finely ground rock salt for salt water generation is prepared for separation. You only need to manage it. Therefore, acquisition and management of materials are simplified.

In a preferred embodiment, the apparatus for storing and supplying a granular material of the present invention is connected to a receiving hopper into which the granular material is charged; and a discharge feeder of the receiving hopper via a first pneumatic transport line. A first cyclone comprising an air inlet, an air outlet, a powder outlet, and a collision crush plate disposed facing the air inlet; and a first cyclone powder outlet. A first storage hopper connected to store relatively coarse particles separated in the first cyclone; a second storage hopper connected to an air outlet of the first cyclone via a second air transport line; A solid-gas separation device for separating relatively fine powder accompanying the air flowing out from the air outlet of one cyclone from the air; and a solid-gas separation device connected to the powder outlet of the solid-gas separation device and separated by the solid-gas separation device. Second to store relatively fine powder A storage hopper; an air inlet connected to the discharge feeder of the first storage hopper via a third air transport line, and connected to the solid-gas separation device via a fourth air transport line. A second cyclone comprising an air outlet, a granule outlet, and a collision crush plate disposed facing the air intake; a second cyclone connected to the granule outlet of the second cyclone; A third storage hopper for storing the granular material separated in step (a); and a vacuum source for applying a negative pressure to the solid-gas separation device and the pneumatic transport line. According to this embodiment, the storage capacity of the device is increased because the storage hopper is increased.

In a preferred embodiment, the solid-gas separation device comprises two units operating alternately. According to this configuration, the pneumatic transportation of the granular material to the second storage hopper can be continuously performed.

[0010] Preferably, a heating means is provided for heating the contents of any or all of the hoppers. In a preferred embodiment, the heating means supplies heated air to the conical wall of the hopper.
The above-described features and effects of the present invention, as well as other features and effects, will be further clarified as described in the following examples.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment of a pneumatically transportable powdery granule storage and supply apparatus according to the present invention. In this embodiment, the apparatus receives a road deicing agent such as rock salt. Designed for storage. Referring to FIG. 1, a pneumatic transport type granular material storage and supply device 10 includes a receiving hopper 12 for receiving loose rock salt granular material dropped from a powder transport vehicle or the like, and a pneumatically transported granular material. A cyclone 14 for centrifuging the body from the air, and a first storage hopper 16 for storing relatively coarse particles which are sprayed directly on the road.
A second solid-gas separation device 18, a second storage hopper 20 for storing relatively fine powder for producing salt water,
A vacuum pump 22 as a vacuum source and a bag-type filter 24 for filtering air sucked by the vacuum pump 22 are provided.

The receiving hopper 12 has a discharge feeder 26, and the discharge feeder 26 has a first
The cyclone 14 is connected to the air intake of the cyclone 14 via the air transport line 30.

As shown in FIG. 2, the cyclone 14
A suction pipe 32 as an air inlet, an air suction pipe 34 as an air outlet, and a granular material outlet 3 opened downward.
6 is provided. The suction pipe 32 of the cyclone 14
It is offset slightly inward from the tangential direction with respect to the body 38. On the extension of the suction pipe 32, the body 38
A first collision crush plate 40 is fixed inside, and a second collision crush plate 42 is fixed inside the body 38 obliquely opposite to the first collision crush plate 40. The air suction pipe 34 is attached by a screw clamp 44 so that the height can be adjusted in the vertical direction, so that the particle size of the powdered particles accompanying the air sucked toward the suction pipe 34 can be adjusted.

Referring again to FIG. 1, the powder outlet 36 of the cyclone 14 is airtightly connected to the first storage hopper 16. The first storage hopper 16 is installed overhead at a height below which a deicing agent spraying vehicle can enter and exit, and includes a discharge feeder 50 and a shutter 52.

The air suction pipe 34 of the cyclone 14 is connected to the solid-gas separation device 18 via a second pneumatic transport line 48 having a valve 46. As the solid-gas separator 18, a separator known as “vacuum conveyor” in the field of pneumatic transportation can be used. As shown in the figure, the solid-gas separation device 18 is installed in a set of two units, and the cyclone 14 can be continuously operated by being alternately operated by a control device (not shown). The powder separated by the solid-gas separation device 18 is sent to the second storage hopper 20 having the discharge feeder 54 and the shutter 56.

Next, the mode of operation and use of the granular material storage and supply device 10 will be described. The loose rock salt as a deicing agent is transported by a powder transport vehicle, a dump truck, or the like. It is thrown into. Vacuum pump 22
Is activated and the discharge feeder 26 of the receiving hopper 12 is operated, the rock salt particles from the receiving hopper 12 cause the first pneumatic transport line 30 to flow with the air by the action of the negative pressure.
Then, it is sucked into the cyclone 14 through the suction pipe 32 and crushed partially by colliding with the first collision crush plate 40 and the second collision plate 42. Rock salt particles having a large particle diameter fall into the first storage hopper 16 due to the centrifugal action of the cyclone and are stored there. The small-sized rock salt particles are entrained in the air and sent to the solid-gas separation device 18 via the second air transport line 48, where they are separated from the air, fall into the second storage hopper 20, and are stored there. Is done.

The rock salt particles stored in the first storage hopper 16 can be loaded on the antifreeze sprayer by opening the shutter 52 and operating the discharge feeder 50 as needed. On the other hand, the rock salt fine powder stored in the second storage hopper 20 opens the shutter 56 and opens the discharge feeder 5.
4 can be supplied to the salt water generation tank by operating the same.

FIG. 3 shows a second embodiment of the granular material storage and supply device according to the present invention.
An example will be described. Referring to FIG. 3, the powder storage device 100 includes one receiving hopper 104 having a discharge feeder 102, one first cyclone 106,
A first storage hopper 110 having a discharge feeder 108 and connected to the first cyclone 106 for storing relatively coarse antifreeze, and a solid-gas separator for separating relatively fine powder from air; 112, one second storage hopper 116 provided with a discharge feeder 114 for storing relatively fine powder separated by the solid-gas separation device 112, three second cyclones 118, and a discharge feeder 120 respectively. Are provided with three third storage hoppers 122.

The first cyclone 106 and the second cyclone 118 have the same structure as the cyclone 14 shown in FIG. 2, and have the same collision as the first collision crush plate 40 and the second collision plate 42 of the cyclone 14 in FIG. Each has a crush plate. The discharge feeder 102 of the receiving hopper 104 is the first
It is connected to the air intake of the first cyclone via an air transport line 124. The air outlet of the first cyclone 106 is connected to a solid-gas separation device via a second air transport line 126. The discharge feeder 108 of the first storage hopper 110 is connected to the air intakes of three second cyclones 118 via a third air transport line 127. Furthermore,
The air outlet of each second cyclone 118 is connected to a solid-gas separator 112 via a fourth air transport line 128. The suction port of the solid-gas separator 112 is connected to a vacuum pump 132 via a bag filter 130.

In the storage device according to the second embodiment, the deicing agent put into the receiving hopper 104
By closing the valve 134 of the third air transportation line 127 and opening the valve 136 of the second air transportation line 126,
First, it is pneumatically transported to the first storage hopper 110. When the first storage hopper 110 is full, the valve 134 of the third air transportation line 127 is opened, and the second air transportation line 1 is opened.
26, the first storage hopper 110 is closed.
By operating the discharge feeder 108, the deicing agent in the first storage hopper 110 is pneumatically transported to the three third storage hoppers 122. When the first storage hopper 110 is empty, the first storage hopper 110 is filled by being transported from the receiving hopper 104 again. This second
In the storage device according to the embodiment, the particulate antifreeze is stored in one receiving hopper 104, one first storage hopper 110, and three third storage hoppers 122, so that a large amount of the antifreezing agent is stored. Can be stored.

FIG. 4 shows a variation of the hopper. This variation of the hopper can be applied to any of the aforementioned receiving hoppers and storage hoppers. In this variation, the hopper wall 140 is a microporous partition 14.
2 and a spacer / seal member 144
Accordingly, an annular air-filled chamber 146 is formed between the wall 140 and the wall 142 of the hopper. The air heated by the heater 148 is pumped into the air-filled chamber 146 by the blower 150 so that the heated air flows out of the hopper through the microporous partition wall 142. By heating the contents in this way, it is possible to prevent rock salt from consolidating at a low temperature to form a bridge, and to smoothly discharge the material from the hopper.

[0022]

The first advantage of the present invention is that the deicing agent can be stored and loaded on a spreader without using a conventional disposable flexible container bag, so that road maintenance costs can be reduced. Saving money and eliminating waste disposal problems. Another advantage of the present invention is that
Because we do not use flexible container bags,
This means that it is possible to save labor in loading the vehicle. The third effect of the present invention is that the use of a cyclone having a crushing function and the generation of finely crushed rock salt for the generation of salt water at the same time as the pneumatic transportation are performed, so that the acquisition and management of materials are unified and simplified. That's what it means.

[Brief description of the drawings]

FIG. 1 is a system diagram of a granular material storage and supply device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a cyclone of the apparatus shown in FIG. 1,
(A) is a partially cutaway front view, and (B) is II in FIG. 2 (A).
FIG. 2 is a cross-sectional view along the line II.

FIG. 3 is a system diagram of a granular material storage and supply device according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a variant of the hopper of the device shown in FIGS. 1 and 3;

[Explanation of symbols]

 10: Granule storage and supply device 12: Receiving hopper 14: Cyclone 26: Discharge feeder of the receiving hopper 30: First pneumatic transport line 40, 42: Cyclone collision crush plate 16: First storage hopper 20: Second storage Hopper 18: Solid-gas separation device 22: Vacuum pump

Claims (5)

[Claims] A receiving hopper provided with a discharge feeder, into which the granular material is charged, an air inlet connected to a discharge feeder of the receiving hopper through a first air transport line, an air outlet, A cyclone comprising a granule outlet and a collision crush plate arranged facing the air intake; a relatively coarse-grained granule connected to the cyclone granule outlet and separated by the cyclone And a storage hopper with a first discharge feeder for storing the fine powder, which is connected to an air outlet of the cyclone via a second air transport line and entrains relatively fine powder entrained in air flowing out of the air outlet of the cyclone. A solid-gas separation device that separates from the air, a storage hopper with a second discharge feeder that is connected to the powder material outlet of the solid-gas separation device, and stores relatively fine powder separated by the solid-gas separation device. The solid air Releasing device and a vacuum source for applying a negative pressure to the air pipeline, it is provided with a capital air transport equation granular material storage and supply device according to claim. 2. A receiving hopper provided with a discharge feeder, into which the granular material is charged, an air inlet connected to a discharge feeder of the receiving hopper via a first air transport pipe, an air outlet, A first cyclone comprising a granule outlet and an impingement crush plate disposed facing the air intake; and a comparison connected to the granule outlet of the first cyclone and separated by the first cyclone. First for storing coarse particles
A storage hopper with a discharge feeder, and a relatively fine powder that is connected to the air outlet of the first cyclone via a second pneumatic transport line and entrains air flowing out of the air outlet of the first cyclone. A storage hopper with a second discharge feeder that is connected to a powdery material outlet of the solid-gas separation device and stores relatively fine powder separated by the solid-gas separation device; An air inlet connected to a discharge feeder of the first storage hopper via a third air transport line, and an air outlet connected to the solid-gas separator via a fourth air transport line; A second cyclone including a powder outlet, and a collision crush plate disposed facing the air intake; and a second cyclone connected to the powder outlet of the second cyclone and separated by the second cyclone. A third discharge filter for storing the granular material A pneumatic transportation type powder storage device, comprising: a storage hopper with a feeder; and a vacuum source for applying a negative pressure to the solid-gas separation device and the air transportation pipeline. 3. The apparatus for storing and supplying a granular material according to claim 1, wherein the solid-gas separation device includes two units that operate alternately. 4. The apparatus according to claim 1, further comprising heating means for heating the contents of said hopper.
Powder storage device based on any of the above. 5. The apparatus according to claim 4, wherein said heating means supplies heated air into the hopper.