JPH10309972A - Cleaning method of powder tank room of powder transport tank truck and cleaning plant used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning method of the powder tank room of a powder transport tank truck, for easily and rapidly cleaning the tank room of remaining powder after the powder in the tank room is forcibly fed to a silo through a delivery hose arranged on the truck body, and provide a cleaning plant used for it. SOLUTION: This cleaning plant consists of a cleaning method of a powder tank room 2 which comprises connecting a delivery hose 10 to an air suction device 26 keeping the tank room 2 and the hose 10 in a negative pressure, then inserting an air injection nozzle 22 in the tank room 2 through a manhole 3 of the powder tank room 2 to spray air over the room interior for cleaning and sucking the room air including remaining powder out in a powder separator/ collector 15 through the hose 10 to separate and collect the remaining powder, and the powder separator/collector 15 including the air suction device 26 connected to the delivery hose 10, a bag filter 17 and powder collection tanks 19, and the air injection nozzle 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning a powder tank chamber of a powder transport tank truck for loading and transporting various powders such as cement powder, fly ash, gypsum powder, silica sand powder and the like in a tank. The present invention relates to a cleaning plant used for the cleaning method.

[0002]

2. Description of the Related Art A widely used powder transport tank truck (see FIG. 3) has a structure in which a powder tank 1 in the form of a cylinder is placed laterally on a carrier behind a driver's seat. The partition is divided into an arbitrary number of powder tank chambers 2. Then, each of the powder tank chambers 2 has
For example, an air slide can bus 5 (hereinafter, referred to as a slide can bus 5) is stretched and formed in a squirrel bowl shape so that the zeros can easily gather at the center of the bottom. An air pressure inlet 6 that opens and a delivery hose 10 that exposes the powder pressure feed port 8 from above at the center bottom 7 of the slide can bus 5 are arranged. The air pressure inlet 6 is connected to an air compressor 13 provided on the vehicle body. At the same time, the delivery hose 10 is drawn out of the room through the tank wall and can be connected to the silo 11 side.

When the powder to be loaded and transported is injected from the manhole 3 and stored in the powder tank chamber 2 for transportation, and when the transported powder is transported to the destination silo 11 for wholesale, The delivery hose 10 is connected to the inlet pipe 12 of the silo 11.
After that, compressed air is press-fitted from the air pressure inlet 6 to pressurize the inside of the powder tank chamber 2, and the powder 20 in the room is compressed with the air from the powder pressure port 8 by the pressurizing force by the pressurization. It is sent out and transferred to the silo 11 via the delivery hose 10.

[0004]

The above-mentioned conventional method of transporting powder by a powder transport tank truck and transporting the powder to the silo 11 involves sending the powder 20 in the powder tank chamber 2 to the silo 11 for transport. When the powder is emptied, the powder 20 adheres to the inside of the powder tank chamber 2 (particularly at the corner of the room), and residual powder adheres to the slide canvas 5. In this case, it is necessary for a worker who has taken a powder prevention measure such as wearing a mask to enter the powder tank chamber 2 from the manhole 3 and manually clean the residual powder.

[0005] However, the manual cleaning of the powder tank chamber 2 is restricted in the freedom of action in a narrow tank chamber, and in addition, it must be performed in a bad environment where powder is scattered and filled. This is an undesirably difficult work that requires a lot of trouble and time. Accordingly, there is a case where the work is easily avoided, and there is a case where it is impossible to transship different kinds of powders. For example, there is a problem that the empty tank runs on the return path to lower the efficiency of powder transportation and increase the transportation cost.

The present invention provides a method for cleaning a powder tank chamber of a powder transport vehicle which solves the above-mentioned problems in the prior art, and a cleaning plant using the cleaning method.

[0007]

According to the present invention, which solves the above technical problem, a powder hose is pressurized with air, and a delivery hose extending from a powder pressure feed port in the powder tank chamber to the outside of the chamber is used. In cleaning the powder tank chamber of a powder transport tank truck that pressurizes and transfers powder in a powder tank chamber to a silo or the like, the delivery hose is connected to an air suction device to connect the powder tank chamber to the delivery. The hose is maintained in a negative pressure state, and thereafter, an air injection nozzle is inserted from the manhole of the powder tank chamber to clean the interior by blowing air, and the room air containing residual powder is sucked by the delivery hose. A method for cleaning a powder tank chamber of a powder transport tank car, which comprises separating and removing the residual powder.

[0008] At the end of a suction pipe having a connection port to a delivery hose, a powder separation / collection device consisting of a bag filter and an air suction device are provided, and air is inserted and removed from a manhole of a powder tank chamber. A cleaning plant having a structure having an injection nozzle and used in the cooling method.

That is, the method for cleaning a powder tank chamber of a powder transport tank truck according to the present invention provides a powder transport tank truck which pressurizes and transfers powder under pressure through a delivery hose by pressurizing the powder tank chamber. Utilizing a delivery hose system, the powder tank chamber and the delivery hose are brought into reverse negative pressure to automatically discharge and remove the residual powder. The cleaning plant described above separates powder-containing air sucked by a delivery hose into powder and clean air to enable powder recovery.

[0010]

The above-described method for cleaning the powder tank chamber and the cleaning plant used in the same according to the present invention can be performed by blowing air with an air nozzle inserted from a manhole in a state where the powder tank chamber and the delivery hose are set and maintained in a negative pressure state. Residual powder adhering to the interior wall is air-cleaned, and the air spraying causes the residual powder to “float indoors” or “fall and collect and accumulate on the bottom of the room” or “both of them” depending on the specific gravity. In the state of "mixing", the residual powder-containing air is automatically sucked and removed by a delivery hose having a negative pressure suction force, so that the powder tank chamber can be beautifully cleaned.

Since the powder tank chamber is in a negative pressure state during the air blowing cleaning of the room by the air injection nozzle, there is no phenomenon that the air in the powder floating room is blown out of the manhole by the air cleaning.
It is only necessary for an operator located outside the tank chamber to insert the air injection nozzle from the manhole and perform the outdoor operation, and the powder tank chamber can be simply and quickly cleaned under a favorable working environment.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a cleaning plant 30 according to an embodiment of the present invention will be described with reference to FIG. That is, the cleaning plant 30 of this embodiment is different from that of FIG.
, A suction pipe 16 having a connection port to the delivery hose 10 of the powder transport tanker, and a "powder separation / recovery device 15 having a bag filter 17 as a main part" provided at the end of the suction pipe 16; An air suction device 26 "is arranged in the building 31.

More specifically, the powder separation and recovery device 15 includes a cyclone section 18 for receiving powder-containing air from the suction pipe 16 and separating the powder, a bag filter 17 connected above the cyclone section 18, and a cyclone section 18. Of a known structure comprising a powder recovery tank 19 provided below, and receives the powder-containing air sucked from the suction pipe 16 into the cyclone unit 18 to separate the powder and drop the powder into the powder recovery tank 19 At the same time, the air containing fine powder that cannot be collected by the cyclone unit 18 is filtered by the bag filter 17 and released as clean air.

An air suction device 26 is provided near the powder separation and recovery device 15.
By the operation of 6, air is sucked from the suction pipe 16 and the delivery hose 10 connected to the suction pipe 16 to maintain the inside thereof in a negative pressure state, and the suction force causes the powder separation and collection device 15 to operate. . This embodiment has a structure in which a plurality of powder recovery tanks 19 are arranged in parallel, and the powder can be recovered by type and reused by switching the connection pipe with the cyclone unit 18.

Further, the cleaning plant 30
An air pumping device 24 is installed in the building 31, and is held by hand at the tip of an air hose 23 extending from the air pumping device 24 and inserted through the manhole 3 of the powder tank chamber 2 to perform outdoor operation. An air ejection nozzle 22 of a shape that can be inserted into and removed from the manhole 3 for cleaning the room by blowing air onto the adhered and remaining powder in the powder tank chamber 2.

The cleaning plant 30 of the embodiment shown in FIG. 2 is used by the following method and procedure. That is, FIG. 1 showing one embodiment of the cleaning method of the present invention.
First, the powder 20 in the powder tank chamber 2 is transferred to the silo 11 and the empty powder tank chamber 2 is to be cleaned.
The delivery hose 10 wound around the vehicle body is stretched and connected to the suction pipe 16. Then, the air suction device 26 of the cleaning plant 30 is operated to operate the powder tank chamber 2 and the delivery hose 1.
0 is set to a negative pressure state, and the negative pressure state is maintained.

Thereafter, an operator having the air injection nozzle 22 opens the opening / closing lid 4 and puts the air injection nozzle 22 at the end of the hose into the room through the manhole 3 so that the manhole 3 is opened.
Air is blown to the tank wall of the powder tank chamber 2 by performing an up / down operation, a swing / rotation operation, and the like from the outside to sufficiently air-clean the room. By maintaining the negative pressure suction state between the powder tank chamber 2 and the delivery hose 10 during the air cleaning and for a short time after the end of the air cleaning, the residual powder 20A in the room is removed together with the room air and the delivery hose 10 is discharged. Then, the powder is sent to the powder separation / collection device 15 to discharge and remove the residual powder 20A, and the powder tank chamber 2 is cleaned beautifully. After the cleaning operation is completed, the delivery hose 10
Then, the suction pipe 16 is separated, and the next type of powder is loaded.

The cleaning method and the cleaning plant 30 used in the above-described embodiment have the above-described operation, and it is not necessary for an operator to enter the powder tank chamber 2, and the manhole of the powder tank chamber 2 in a negative pressure state is provided. Since the powder 20A remaining in the room can be completely removed only by air cleaning by inserting the air ejection nozzle 22 from 3, the powder tank chamber 2 can be simply and quickly cleaned in a favorable working environment. And, by facilitating the cleaning, it is possible to reload the powder on the outbound route and transport it on the return route,
A variety of powders can be freely loaded at any time and run in a flexible manner, thereby enabling the rationalization of the powder transport and the improvement of the mobility, and the reduction of the transport cost by them can be promoted.

The cleaning method of the present invention and the cleaning plant 30 used therefor are not limited to the above-described embodiment. For example, the air suction device 26 may be connected to the suction pipe 16.
And the suction pipe 16 is set to the suction side of the air suction device 26 and the powder separation and collection device 15 is set to the delivery side, or the air for the air injection nozzle 22 is arranged. As an alternative to the pumping device 24, the air compressor 13 provided in the vehicle body is used,
Alternatively, the air injection nozzle 22 has a structure with an automatic drive unit that uses a vehicle body battery as a power source, and the air nozzle device with the automatic drive unit is simply placed on the manhole 3 and set. In some cases, the powder tank chamber 2 is automatically air-cleaned by a vertically rotating operation. The air injection nozzle 22 may have any shape such as a small pore shape, a dew opening shape, and a flat slit shape. Any shape can be used as long as it can be air-cleaned by blowing off powder adhering or remaining on the wall.

[0020]

As described above, the method for cleaning the powder tank chamber of the powder transport tank truck of the present invention and the cleaning plant used in the method include a cleaning operation for removing and cleaning residual powder in the powder tank chamber. The workability can be improved simply and efficiently, and there is no hygiene problem due to powder scattering. Based on the improved workability, the degree of freedom in transshipment and transport of different kinds of powders is improved, and there are extremely useful effects for promoting and improving the mobility and rationalization of powder transport and reducing the transportation cost.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a procedure and a method of a method of cleaning a powder tank chamber of a powder transport tank truck according to an embodiment of the present invention.

FIG. 2 is a structural explanatory view of a cleaning plant according to an embodiment of the present invention.

3A and 3B show the structure of a powder transport tanker, wherein FIG. 3A is an overall side view and FIG. 3B is an enlarged sectional view of the powder tank chamber.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Powder tank 2 Powder tank room 3 Manhole 4 Opening / closing lid 5 Air slide can bus 6 Air pressure inlet 7 Center bottom 8 Powder pressure feed port 10 Delivery hose 11 Silo 12 Injection pipe 13 Air compressor 15 Powder separation and collection device 16 Suction tube 17 Bag filter 18 Cyclone section 19 Powder recovery tank 20 Powder 20A Residual powder 22 Air injection nozzle 23 Air hose 24 Air pressure feeder 26 Air suction device 30 Cleaning plant 31 Building

Claims (3)

[Claims] 1. A powder which pressurizes and transfers powder in a powder tank chamber to a silo or the like by pressurizing the powder tank chamber with air and using a delivery hose extending outside from the powder pressure feed port in the powder tank chamber. In cleaning the powder tank chamber of the body transport tanker, the delivery hose is connected to an air suction device to maintain the powder tank chamber and the delivery hose in a negative pressure state, and thereafter,
An air injection nozzle is inserted from a manhole of the powder tank chamber to clean the interior by blowing air, and room air containing residual powder is suctioned by the delivery hose to separate and remove the residual powder. How to clean the powder tank room of the powder transport tank truck. 2. A powder separation / collection device comprising a bag filter and an air suction device are provided at the end of a suction tube having a connection port to a delivery hose, and furthermore, a shape capable of being inserted and removed from a manhole of a powder tank chamber. A cleaning plant used in the cleaning method according to claim 1, which has a structure provided with an air injection nozzle. 3. The cleaning plant according to claim 2, wherein the powder separating and collecting device has an individual powder collecting structure having a plurality of powder collecting tanks.