JPH10151985A - Tank lorry - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain generation of a residual liquid at unloading time to the possible minimum level by downward inclining an inside bottom surface of a tank toward a central part from its lengthwise directional both end parts, arranging bottom valves in the lowest part of an inclined bottom surface, and forming it in a flat elliptic cylindrical shape on which a lateral breadth is larger than a vertical height width. SOLUTION: As a whole, a tank 1 is formed in a flat elliptic cylindrical shape on which a lateral breadth is set at a rate not less than at least 1.5 times its vertical height width. The upper surface 15 side of the tank 1 becomes horizontally a straight line shape, but the bottom surface 2 side inclines so as to become low over to a central part from its lengthwise directional both end parts as well as to become low over to a central part from width directional both end parts, and an intersection between both central parts is formed in the lowest. Partition plates 7a and 7b are arranged at a proper interval on the inside, and bottom valves 3a, 3b and 3c are respectively arranged in the lowest position of a bottom surface 2 in close vicinity to a tank chamber 8b of a central part and the partition plates 7a and 7b of tank chambers 8a and 8c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank lorry for transporting a dangerous liquid. Also called chemical lorry.

[0002]

2. Description of the Related Art A conventional tank lorry of this type, like a general tank lorry, has a straight cylindrical body inside a tank and loads and transports liquid as a dangerous substance. A bottom valve is provided on the bottom surface of each tank chamber for unloading the liquid in each tank chamber, and this is connected to a discharge pipe provided at the bottom of the tank.

[0003] The tank is slightly lower in the direction of travel,
That is, the whole tank is attached slightly downward
Therefore, the discharge pipe is also arranged forward and downward along the tank bottom, whereby the liquid in each tank chamber is once sent out to the front of the tank through the discharge pipe, and from the front position, the rear part of the tank lorry or the left and right sides of the lorry. Sent to the department,
The liquid is taken out from that position.

[0004] As described above, it is necessary to collect the liquid in the plurality of tank chambers once at the front position and to send the liquid to the rear or to the left or right from the front position. Therefore, the total extension length of the discharge pipe is very long. Was. In the tank of such a tank truck, that is, in each tank chamber, various liquids including various oils are loaded and transported.When the viscosity of the loaded liquid increases, each tank chamber or the like is unloaded at the time of unloading. A large amount of residual liquid is generated in the long discharge pipe. So conventionally, for high viscosity liquids, at the same temperature,
It was said that loading and transporting by tank truck was difficult. Even with low-viscosity liquids, if the total length of the discharge pipe is long as in the past, residual liquid will be generated in the tank chamber or the discharge pipe, and it will take considerable time to completely discharge the residual liquid. It took time.

[0005]

Therefore, it has been conventionally possible to reduce the viscosity of a high-viscosity liquid by raising the liquid temperature, thereby minimizing the generation of residual liquid at the time of unloading, and enabling loading and transport by a tank lorry. It was done. However, when such a method is adopted and the temperature of the high-viscosity liquid is raised and raised to high temperature for transportation, many of them are first deteriorated and deteriorated. In addition, the cost is extremely high, such as high temperature resistance equipment required for loading on the tank lorry and unloading side.

The present invention has been made in view of the above circumstances and aims to solve the above-mentioned problems of the prior art. Each of the tanks is inclined by lowering the front and rear bottom surfaces in the tank toward the center. It is another object of the present invention to collect the liquid in the chamber at the center and discharge the liquid from the side or rear from the center, thereby minimizing the generation of residual liquid during unloading.

[0007]

Means for Solving the Problems To solve the above problems, the invention according to the first aspect is directed to a tank lorry for loading and transporting a liquid as a dangerous substance in a tank, the tank lorry comprising: 1, an inner bottom surface 2 is formed on an inclined bottom surface which is inclined downward from both ends in the longitudinal direction toward the center, a bottom valve 3 is provided at the lowest position of the inclined bottom surface 2, and the tank 1 Is formed in a flat elliptical cylindrical shape in which the left and right lateral widths L2 are large relative to the upper and lower height widths L1.

According to the present invention, the tank 1 has an inner bottom surface 2 formed on an inclined bottom surface 2 which is inclined downward from both ends in the longitudinal direction toward the center. The liquid is discharged from the bottom valve 3 provided on the bottom surface 2 at this center position, and the discharge pipe 4 provided in communication with the bottom valve 3 Can be disposed at the shortest distance to the part or the side part, and the discharge pump 5 is interposed in the middle of the discharge pipe 4, whereby the liquid in the tank 1 can be smoothly discharged to the outside by the pump action. .

In the present invention, since the tank 1 is formed in a flat elliptical cylindrical shape whose left and right lateral widths L2 are large with respect to its upper and lower height widths L1, the tank 1 The height of the liquid loading port 6 provided from the ground can be made as low as possible, so that the workability can be improved, and the center of gravity of the tank lorry is lowered, so that the running stability is improved accordingly. Can be.

[0010] In the invention according to claim 2, the tank is formed in a flat elliptic cylindrical shape in which the horizontal width at right and left sides is at least 1.5 times or more of the vertical width. It has a configuration according to claim 1.

In the present invention, the tank is formed in a flat elliptical cylindrical shape in which the horizontal width on the left and right sides is at least 1.5 times or more the vertical width of the tank. The height of the liquid loading port 6 provided on the upper side from the ground can be made as low as possible, and the stability during traveling can be improved.

In the invention according to claim 3, the partition plate 7 is provided inside the tank 1 at an appropriate interval in the longitudinal direction.
a, 7b are provided, a plurality of tank chambers 8a, 8b, 8c are formed in the longitudinal direction thereof, and each tank chamber 8a, 8b, 8c is located at the lowest position close to the partition plates 7a, 7b.
And the bottom valves 3a, 3b, 3c are provided.

In the present invention, even if a large number of tank chambers 8a, 8b, 8c are formed in the tank 1,
The tank chambers 8a, 8 are located at the lowest bottom surfaces 2a, 2b, 2c adjacent to the partition plates 7a, 7b for partitioning the tanks 8a, 8b.
Since the bottom valves 3a, 3b, 3c of the tanks 8b, 8c are provided, the liquid in the tank chambers 8a, 8b, 8c is reliably discharged toward the center of the tank, and the tank chambers 8a, 8b, 8c are formed.
No residual liquid is generated.

In the invention according to claim 4, the discharge pipe 4 connected to the bottom valves 3a, 3b, 3c of the tank chambers 8a, 8b, 8c is connected to the bottom valves 3a, 3b, 3c. The outlet pipes 9a, 9b, 9c and the respective outlet pipes 9a, 9
b and 9c are joined and connected, and a branch pipe 11a, 11b, which is branched and connected from the merge pipe 10 and extends to the side and rear of the tank lorry.
11c, and the discharge pump 5
Is interposed.

According to the present invention, each of the tank chambers 8a, 8b,
Since the discharge pump 5 and the discharge pump 5 are only connected via the relatively short outlet pipes 9a, 9b, 9c and the merge pipe 10 in the discharge pipe 4, the inside of the discharge pipe 4 and the respective tank chambers 8a, 8b are connected. , 8c hardly generates residual liquid.

In order to discharge the liquid to the outside from the tank chambers 8a, 8b, 8c to the side and rear of the tank lorry by the branch pipes 11a, 11b, 11c, only one discharge pump 5 is installed in the merging pipe 10. Since it suffices, the configuration becomes simpler and the device can be manufactured relatively inexpensively.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on an embodiment shown in the drawings. The drawings show one embodiment of the present invention, and FIG. 1 is a side view of the entire tank lorry. 2 is a side view of the tank, FIG. 3 is a front view of the same, FIG. 4 is a plan view of the same, and FIG. 5 is a plan view of the discharge pipe seen from the back side.

The tank lorry is a liquid A which is a dangerous substance.
Are loaded and transported in the tank chambers 8a, 8b, 8c of the tank 1. As the liquid A, for example, a viscosity of 6000 CP
Exceeding dangerous liquids, for example, having a viscosity of 1300
PPG (polypropylene glycol) of about 0CP is loaded, but is not limited to this, and it is possible to carry a liquid having a normal low viscosity. As shown in FIG. 1, the tank 1 shown in the drawing has an outer tank 12 provided outside of the tank 1 and has a double structure, and the tank 1 has a special flat cylindrical shape described below. The tank 12 has a general flat cylindrical shape in which the front and rear are closed.

That is, as shown in FIG.
A tank device composed of an outer tank 12 and an inner tank 1 is mounted on the undercarriage 14 of the vehicle.
Is provided.

The tank 1 is, as shown in FIGS. 2 and 3,
As a whole, the upper and lower height width L1 is, for example, 1300
mm, L2 is formed in a flat elliptical cylindrical shape having a ratio of at least 1.5 times or more L2 so that the lateral width L2 on the left and right is 2250 mm, whereby each tank chamber 8a, 8b and 8c can be loaded with as much liquid as possible, and the height of the liquid loading port 6 provided on the upper side of the tank 1 from the ground can be made as low as possible, and the running stability can be improved. Can be improved.

The upper surface 15 of the tank 1 is horizontal and straight, while the bottom 2 is lower from both ends in the longitudinal direction to the center and lower from both sides in the width direction to the center. The intersection 16 of the two central portions is formed so as to be lowest. Partition plates 7a and 7b are provided at appropriate intervals inside the tank 1 to divide the inside into three tank chambers 8a, 8b and 8c. A bottom valve 3b is provided at the lowest position of the bottom surface 2 of the tank chamber 8b at the center.
8c, bottom valves 3a and 3c are provided at the lowest position on the bottom surface 2 in the vicinity of the partition chambers 7a and 7b, respectively. A discharge pipe 4 is connected to each of the bottom valves 3a, 3b, 3c. As shown in FIG. 2, particularly FIG. 5, the discharge pipe 4 joins outlet pipes 9a, 9b, 9c directly connected to the respective bottom valves 3a, 3b, 3c and outlet pipes 9a, 9b, 9c. One joining pipe 10 to be connected and the joining pipe 1
Branch pipes 11a, 11b, and 11c, which are branched from and connected to each other and extend to the side and rear portions of the tank lorry;
And the discharge pump 5 is interposed in the merging pipe 10.

In FIG. 1, reference numeral 17 denotes a mirror plate which is an end plate at both ends in the longitudinal direction of the tank 1. Further, in each of the tank chambers 8a, 8b, 8c, a well-known wave-proof plate or the like (not shown) is provided. It is arranged.

In FIG. 5, the tank 1 is positioned in the left-right direction in the drawing.
Therefore, bottom valves 3a, 3b, 3c are provided along the bottom surface 2 in the longitudinal direction, and the discharge pump 5 provided in the merging pipe 10 of the respective outlet pipes 9a, 9b, 9c Although not shown, a switching valve connected to the drain pipe and a switching handle thereof are provided. A branch pipe 11a extending in the width direction orthogonal to the longitudinal direction of the tank 1;
11b has a discharge valve 1 near the discharge ports 18a and 18b.
9a and 19b are provided. FIG. 1 shows a branch pipe 1
The discharge port 19a of 1a is exposed. Further, one branch pipe 11b is connected to the branch pipe 1 extending rearward.
The branch pipe 11c is provided with a stop valve 20 and a discharge valve 21, and has a discharge port 18c.

Therefore, when unloading, each tank room 8
The bottom valve 3a of any one of a, 8b, and 8c is opened by operating an operation unit (not shown), and one of the discharge valves 19a, 19b, and 21 and the stop valve 20 is remotely operated by an operation unit (not shown). Left or right or rear discharge port 18a, 18b
Or select whether to unload from 18c, discharge pump 2
4, the required discharge ports 18a to 18
The liquid is discharged from c to the outside.

At this time, according to the present invention, FIGS.
As can be seen from the figure, the liquid in each of the tank chambers 8a, 8b, 8c is collected in the central portion 16 in the longitudinal direction and the width direction of the tank 1, and the bottom valves 3a, 3b, 3c, the outlet pipes 9a, 9b, 9c and the merging pipe 10 are joined to the discharge pump 5, so that the discharge pipe 4 can be formed as short as possible. And each tank chamber 8a, 8b,
8c hardly generates residual liquid. The total extension length of the discharge pipe 4 is as extremely short as about 1.2 m in the illustrated example (in the conventional example of this type, the corresponding total extension length has reached about 5 m to 6 m).

In order to discharge the liquid to the outside from the tank chambers 8a, 8b, 8c to the side and rear of the tank lorry by the branch pipes 11a, 11b, 11c, only one discharge pump 5 is installed in the merging pipe 10. Since it suffices, the configuration becomes simpler and the device can be manufactured relatively inexpensively.

The discharge pipe 4 has a large diameter of 3 inches or more. That is, this discharge pipe 4
Outlet pipes 9a, 9b, 9c, a merging pipe 10, branch pipes 11a, 11b, 11c, and discharge valves 19a, 1
As 9b and 21, for example, those having a diameter of 4 inches are used (in this type of conventional example, the diameter is 2 inches to 2.0 inches).
About 5 inches were used.)

The present invention is configured as described above. Then, it becomes as follows. In this tank lorry, the bottom surface of the tank 1 has a special shape that is greatly inclined from both ends in the longitudinal direction to the center and from both ends in the width direction toward the center, and the discharge pipe 4 for unloading is formed. The diameter is as large as 3 inches or more, and the overall total length of the discharge pipe 4, particularly the discharge pipe 4 arranged in the longitudinal direction of the tank truck, is set to be short. The high-viscosity liquid A is loaded into the tank chambers 8a, 8b, and 8c of the tank 1 of such a tank truck from the liquid loading ports 6 provided at the top of the tank chambers 8a, 8b, and 8c, and is transported. At the time of unloading, the high-viscosity liquid A in each tank chamber 2 smoothly flows down along the bottom surface 2 which is inclined downward from the longitudinal direction of the flat cylindrical tank 1 and the width direction perpendicular thereto to the center. Each of the bottom valves 3a, 3b,
After being discharged from 3c, it is unloaded smoothly via a large and short discharge pipe 4. Therefore, according to the tank lorry for a high-viscosity liquid, the following first and second cases are obtained.

First, even if the liquid A loaded in the tank 1 has a high viscosity, it is necessary to unload each of the tank chambers 8a, 8b, 8c of the tank 1 at the time of unloading, especially the vicinity of the bottom surface 2 thereof, and the discharge pipe 4. It is hard to remain in the inside, it is unloaded smoothly, and generation of residual liquid is suppressed. In the illustrated example, by performing a polishing process or a coating process on the inside of the tank 1 or the like, the generation of residual liquid is more reliably suppressed. Further, unlike the conventional example, there is no need to raise the liquid temperature of the high-viscosity liquid A for transportation.

Second, the tank 1 has a height L above and below it.
Since it is formed in the shape of a flat elliptical cylinder having a large left and right lateral width L2 with respect to 1, the height of the liquid loading port 6 provided on the upper side of the tank from the ground can be made as low as possible. As a result, the workability can be improved and the center of gravity of the tank lorry can be lowered, so that more liquid can be loaded and the stability during traveling can be improved.

[0031]

According to the first aspect of the present invention, the tank has an inner bottom surface formed on an inclined bottom surface which is inclined downward from both ends in the longitudinal direction toward the center portion. Since the liquid is collected at the center of the bottom surface and the liquid is discharged from the bottom valve provided on the bottom surface at the center position, the discharge pipe provided in communication with the bottom valve is located behind and at the side of the center of the tank. The discharge pump is interposed in the middle of the discharge pipe, so that the liquid in the tank can be smoothly discharged to the outside by the pump action.

That is, according to the present invention, first, the generation of residual liquid at the time of unloading is suppressed. That is, even if the viscosity is 60
Even with high viscosity liquids exceeding 00CP, during unloading, the generation of residual liquid in each tank chamber and in the discharge pipe is suppressed, and subsequent post-cleaning does not require a large number of man-hours and labor, and has high viscosity without problems. Liquid can be loaded and transported.

Second, this is achieved without raising the liquid temperature. That is, as in the conventional example of this type, loading of a high-viscosity liquid,
Since it is not made possible to transport, first, there is no risk of deterioration or deterioration of the high-viscosity liquid, and there is no need for ancillary structures or equipment to maintain high temperatures, and the loading side and unloading side are also resistant. It is excellent in cost, as it does not require high-temperature structures and equipment. As described above, the effects exhibited by the present invention are remarkably large, for example, all the problems existing in this type of conventional example are eliminated at once.

Further, according to the present invention, the tank is formed in a flat elliptical cylindrical shape whose left and right lateral widths are large with respect to the upper and lower height widths. The height of the mouth from the ground can be made as low as possible, so that the workability can be improved accordingly, and the center of gravity of the tank lorry can be lowered, so that the running stability can be improved accordingly.

According to the second aspect of the invention, the horizontal width of the tank is at least 1.5 times the vertical height of the tank.
Since it is formed in a flat elliptical cylindrical shape with a ratio of more than twice, the height of the liquid loading port provided on the upper side of the tank from the ground can be further reduced as much as possible, and stability during traveling Performance can be improved.

According to the third aspect of the present invention, even if a large number of tank chambers are formed in the tank, the bottom valve of each tank chamber is provided on the lowest bottom surface close to the partition plate separating each tank chamber. As a result, the liquid in each tank chamber is reliably discharged toward the center of the tank, and no residual liquid is generated in each tank chamber.

According to the fourth aspect of the present invention, since each tank chamber and the discharge pump are only connected via the relatively short outlet pipe and the merge pipe in the discharge pipe, the inside of the discharge pipe and Almost no residual liquid is generated in each tank chamber.

Moreover, when discharging liquid to the outside from the tank chambers to the side and rear portions of the tank lorry by branch pipes, only one discharge pump needs to be installed in the merging pipe. It can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is an overall side view of a tank truck according to the present invention.

FIG. 2 is a side view of a tank of the main part.

FIG. 3 is a front view of the same.

FIG. 4 is a plan view of the same.

FIG. 5 is a view showing an arrangement state of a discharge pipe of the main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tank 2 Inclined bottom surface 3a Bottom valve 3b Bottom valve 3c Bottom valve 4 Discharge pipe 5 Discharge pump 6 Liquid loading port 7a Partition plate 7b Partition plate 8a Tank room 8b Tank room 8c Tank room 9a Outlet line 9b Outlet line 9c Outlet line 10 Piping 11a Branch piping 11b Branch piping 11c Branch piping

Claims (4)

[Claims] 1. A tank lorry for loading and transporting a liquid as a dangerous substance in a tank, wherein the tank has an inner bottom surface formed on an inclined bottom surface which is inclined downward from both ends in the longitudinal direction toward a central portion. A tank valve provided with a bottom valve at the lowest portion of the inclined bottom surface, and the tank is formed in a flat elliptical cylindrical shape whose left and right lateral widths are large with respect to the vertical height. 2. A tank lorry according to claim 1, wherein said tank is formed in a flat elliptical cylindrical shape with a lateral width of at least 1.5 times or more of a vertical width thereof. 3. A partition plate is provided inside the tank at an appropriate interval in the longitudinal direction, a plurality of tank chambers are formed in the longitudinal direction, and each tank is located at the lowest position close to the partition plate. 3. A chamber bottom valve is provided.
The described tank truck. 4. A discharge pipe connected to a bottom valve of each tank chamber, an outlet pipe connected to each bottom valve, a single connection pipe connected by connecting each outlet pipe, and a branch from the connection pipe. The tank lorry according to any one of claims 1 to 3, wherein the tank lorry is connected to a branch pipe extending from a side portion and a rear portion of the tank lorry, and a discharge pump is interposed in the merging pipe.