JPH07112786A - Liquid storage tank - Google Patents

Abstract

PURPOSE:To provide a liquid storage tank which does not require any external piping and which, when the liquid is warmed to a prescribed temperature and is maintained at that temperature, can store the liquid in a stable condition without causing a local lowering of the effectiveness in maintaining the prescribed temperature. CONSTITUTION:The tank body 11 of a liquid storage tank 1 is divided by a partition 12 into a plurality of front and rear chambers 13 and 14 and is provided at the lower part of the partition 12 with a gate valve 15 communicating with the adjoining chambers 13 and 14 and an exhaust valve 20 at the lower part of the rear chamber 14 of the tank body 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid storage tank for storing a liquid, which is used as a tank vehicle by being mounted on a traveling vehicle, for example.

[0002]

2. Description of the Related Art Conventionally, as a liquid storage tank of this type, a tank body is divided into a plurality of chambers by a partition plate so that a plurality of different types of liquids can be stored in one tank body without being mixed. Is provided.

A bottom valve is provided at an appropriate place at the bottom of each chamber, and the liquid in each chamber is discharged from these bottom valves to prevent the liquid stored in each chamber from mixing.

[0004]

However, in the above-mentioned conventional apparatus, since the bottom valve is provided in each chamber, the pipe must be arranged on the outer surface of the tank body.

Some liquids stored in the tank body need to be kept at a constant temperature in order to prevent the liquids from solidifying. In this case, if the bottom valve is exposed to the outside, There was a problem that the heat retaining effect of the liquid in the vicinity of the bottom valve was reduced, causing problems such as solidification.

[0006]

A liquid storage tank according to the present invention is a liquid storage tank for storing a liquid, wherein the tank body is divided into a plurality of chambers by a partition wall in the front and rear,
A partition valve communicating with a chamber adjacent to the lower portion of the partition wall is provided, and a discharge valve is further provided below the rearmost chamber of the tank body.

[0007]

For example, in a liquid storage tank in which the tank body is divided into two chambers, a front chamber and a rear chamber, by a partition wall, when discharging the liquid stored in the front chamber and the rear chamber, first,
By opening the discharge valve, the liquid in the rear chamber is discharged from the rear chamber through the discharge pipe. After this, if necessary, the discharge valve is closed and moved, and at the place where the liquid in the front chamber is discharged, by opening the discharge valve and opening the gate valve, the liquid stored in the front chamber is connected to the communication pipe, Discharge through the exhaust pipe through the rear chamber.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show the schematic overall construction of a tank vehicle equipped with a liquid storage tank according to the present invention.

In the figure, 1 is a liquid storage tank, and the liquid storage tank 1 is mounted on a frame base 2 having traveling wheels 2a at the rear portion. The front part of the frame 2 is connected to the traveling vehicle 3, and the frame 2 is moved by the traveling of the traveling vehicle 3.
Is towed to transport the liquid storage tank 1 on the frame 2 to an appropriate place.

The inside of the tank body 11 of the liquid storage tank 1 is divided into a front chamber 13 and a rear chamber 14 by a partition wall 12 in the front and rear.

The front chamber 13 and the rear chamber 14 have a tank body 11 made of a heat insulating material (not shown) so that the liquid stored in the front chamber 13 and the rear chamber 14 can be kept warm at an appropriate temperature.

A partition valve 15 is provided below the partition wall 12. As shown in FIGS. 3 and 4, a butterfly valve is used as the sluice valve 15, and one end of the sluice valve is inserted in a communication pipe 16 that is connected to a through hole 12a formed in the lower portion of the partition wall 12. ing. The other end opening of the communication pipe 16 is arranged in front of the bottom of the rear chamber 14.

The sluice valve 15 has a handle 18 extending laterally from below the tank body 11 via a rod 17.
The valve body 15a is configured to be rotatable by the operation of, and the valve body 15a is rotated and opened to the position shown by the chain double-dashed line in FIG.
3 and the rear chamber 14 can be communicated.

As shown in FIGS. 1 and 2, a discharge pipe 21 having a discharge valve 20 is connected to the lower portion of the rear surface of the rear chamber 14, and the liquid in the rear chamber 14 is opened and closed by opening and closing the discharge valve 20. Can be discharged via the discharge pipe 21.

The peripheral portion of the discharge valve 21 is covered with a cover (not shown) so that the same heat retaining effect as that of the tank body 11 can be obtained.

Further, as shown in FIG. 5, openings 35 are formed in the upper surfaces of the front chamber 13 and the rear chamber 14, respectively, and each opening 35 is configured to be openable / closable by the lid 30. .

The lid 30 is provided with a safety valve 31 and a cap 32 for opening and closing a cleaning port 33 formed in the lid 30. Reference numeral 34 in FIG.
Is a cover body that covers the lid body 30.

Reference numeral 40 in FIG. 2 is a cap for opening and closing an injection port (not shown) formed on the upper surfaces of the front chamber 13 and the rear chamber 14, and 41 is an air vent valve.

Next, the storage and discharge of the liquid to the liquid storage tank 1 thus constructed will be described.

First, when the liquid is stored in the front chamber 13 and the rear chamber 14 of the liquid storage tank 1, the sluice valve 12 is closed to close the communication pipe 16, and in this state, the front chamber 13 and the rear chamber 14 are closed. By injecting different kinds of liquids from the injection ports, different kinds of liquids are stored in the front chamber 13 and the rear chamber 14.

Next, when the liquid stored in the front chamber 13 and the rear chamber 14 is discharged, first, the discharge valve 20 is opened so that the liquid in the rear chamber 14 is discharged from the rear chamber 14 through the discharge pipe 21. Is discharged. In this way, all the liquid in the rear chamber 14 is discharged, and the rear chamber 14 is emptied.

After that, if necessary, the discharge valve 20 is closed and moved to open the discharge valve 21 and the gate valve 15 at the place where the liquid in the front chamber 13 is discharged. The liquid stored in (1) flows into the rear chamber 14 via the communication pipe 16, is transmitted through the inner surface of the bottom portion of the rear chamber 14, and is discharged from the rear discharge pipe 21. That is, when the liquid is discharged from the front chamber 13, the inside of the rear chamber 14 is also used as a pipe.

In this way, by using the rear chamber 14 also as a pipe, an external pipe becomes unnecessary. Further, since the sluice valve 15 for controlling the discharge of the liquid from the front chamber 13 is built in the tank main body 11, even when the liquid is kept at a constant temperature, the heat of the liquid is kept near the sluice valve 15. The effect does not decrease.

In this example, the liquid storage tank in which the tank main body is divided into two chambers, front and rear, has been described, but the number is not limited to two and may be three or more.

[0026]

As described above, according to the present invention, for example, when the liquid in the chamber immediately before the rearmost chamber is discharged, the discharge valve in the rearmost chamber is opened and the sluice valve in that chamber is opened. By opening, the liquid stored in the chamber can be discharged from the discharge pipe through the communication pipe, the rear chamber, and the external pipe becomes unnecessary. Further, since the sluice valve is built in the tank main body, even when the liquid is kept at a constant temperature, the heat insulating effect of the liquid does not decrease in the vicinity of this sluice valve. It is possible to prevent the liquid from coagulating and store the liquid in a stable state.

[Brief description of drawings]

FIG. 1 is a side view showing a schematic overall configuration of a tank truck equipped with a liquid storage tank according to the present invention.

FIG. 2 is a plan view showing a schematic overall configuration of a tank truck equipped with a liquid storage tank according to the present invention.

FIG. 3 is a side sectional view showing a sluice valve and its peripheral portion.

FIG. 4 is a view on arrow A in FIG.

FIG. 5 is a cross-sectional view showing the vicinity of an opening having a lid provided on the upper surface of the tank body.

[Explanation of symbols]

 1 Liquid Storage Tank 11 Tank Main Body 12 Partition Wall 13 Front Chamber 14 Rear Chamber 15 Gate Valve 21 Discharge Valve

Claims (1)

[Claims] 1. A liquid storage tank for storing a liquid, wherein the tank body is divided into a plurality of chambers by a partition wall in the front and rear, and a sluice valve is provided to connect the chambers adjacent to the lower part of the partition wall, Further, the liquid storage tank is characterized in that a discharge valve is provided below the rearmost chamber of the tank body.