Tank container

Abstract

To provide a tank container capable of quickly discharging liquid contained in the tank to the outside when unloading and preventing the occurrence of residual liquid in the tank. [Solution] The tank container 10 comprises a tank 12 capable of containing a liquid therein and a frame 14 (14a-14d) capable of supporting the tank 12, and the tank 12 is fixed to the frame 14 so that the bottom surface 12c of the tank 12 slopes downward from one side to the other side in the longitudinal direction of the tank 12.

Description

[Technical Field]

[0001] The present invention relates to a tank container capable of carrying and transporting liquids such as chemicals. [Background technology]

[0002] 2. Description of the Related Art Conventionally, ISO tank containers that comply with ISO standards have been widely known as tank containers capable of loading and transporting liquids, powders, gases, etc.

[0003] For example, Patent Document 1 discloses one such ISO tank container, which includes a tank main body that contains powder and is formed in an airtight cylindrical shape with both longitudinal ends closed; a plurality of storage and discharge sections that are arranged adjacent to each other in the longitudinal direction at the bottom of the tank main body, with their upper ends airtightly joined to the inner wall of the tank main body and to adjacent sections, and whose lower ends are formed in a downward conical shape so as to protrude outward from a plurality of openings provided on the outer peripheral surface of the tank main body; a heat insulating section provided on the outer peripheral surface of the tank main body; and a container frame section to which the tank main body is fixed. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2021-165148 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with conventional tank containers, when liquid is stored in the tank, there are problems such as it taking a considerable amount of time to completely drain the remaining liquid from the tank, and liquid remaining in the tank.

[0006] In view of the above situation, the present invention aims to provide a tank container that can quickly discharge liquid contained in the tank to the outside when unloading, and that can prevent the occurrence of residual liquid in the tank. [Means for solving the problem]

[0007] The present invention is a tank container comprising a tank capable of holding a liquid therein and a frame capable of supporting the tank, characterized in that the tank is fixed to the frame so that the bottom surface of the tank slopes downward from one side to the other in the longitudinal direction of the tank. [Effects of the Invention]

[0008] The tank container of the present invention has the excellent effect of allowing the liquid contained in the tank to be quickly discharged to the outside when unloading, and preventing the occurrence of residual liquid in the tank. [Brief explanation of the drawings]

[0009] [Figure 1] (a) A side view of the tank truck 20 loaded with the tank container 10. (b) A side view of the tank container 10. (c) A front view of the front end 12f of the tank 12. (d) A front view of the rear end 12e of the tank 12. [Figure 2] 10 is a diagram showing an example of the inclination angle of the bottom surface 12c of the tank 12. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] A tank container 10 according to an embodiment of the present invention will be described in detail below with reference to the drawings.

[0011] <Overall structure> First, the overall configuration of the tank container 10 will be described using Figures 1(a) and 1(b). Figure 1(a) is a side view of a tank truck 20 loaded with the tank container 10, and Figure 1(b) is a side view of the tank container 10.

[0012] The tank truck 20 is a vehicle that transports a single tank container 10 loaded on its platform. The tank container 10 is configured to include a cylindrical tank 12 that can contain a liquid therein, and a frame 14 (14a to 14d) that is a frame-shaped body disposed so as to surround the periphery of the tank 12.

[0013] The tank container 10 is fixed to the frame 14 with the front end 12f of the tank 12 facing the direction of travel of the tank truck 20 (right side in Figure 1(a)) and the rear end 12e of the tank 12 facing the opposite direction to the direction of travel of the tank truck 20 (left side in Figure 1(a)), and with the entire tank 12 held approximately horizontally.

[0014] The tank container 10 of this example is an ISO tank container that complies with the standards set by ISO, and various specifications such as capacity, length, width, height, etc. are designed based on the ISO standards.

[0015] <Tank> Next, the tank 12 of the tank container 10 will be described with further reference to Figures 1(c) and (d). Figure 1(c) is a front view of the front end 12f of the tank 12, and Figure 1(d) is a front view of the rear end 12e of the tank 12.

[0016] Tank 12 is a member capable of containing a liquid, and in this example is configured as an airtight cylindrical member made of stainless steel. Note that the material and shape of tank 12 are not particularly limited, and for example, the inner surface of tank 12 may be lined with fluororesin or the like, and the shape may be a square tube or the like.

[0017] Examples of liquids that can be stored inside the tank 12 include chemicals such as sulfuric acid and hypochlorous acid water, as well as oils, natural water, hot spring water, beverages, alcoholic beverages (wine, sake, etc.), soy sauce, etc.

[0018] As shown in FIG. 1(b), an upper spill box 15, a manhole 16, and the like are provided on the top surface of the tank 12.

[0019] 1(b), a front support portion 12a that supports the front side of the bottom surface of the tank 12 and a rear support portion 12b that supports the rear side of the bottom surface of the tank 12 are integrally provided on the bottom surface of the tank 12. The front support portion 12a and the rear support portion 12b may be separate members from the tank 12. In this example, the front support portion 12a and the rear support portion 12b are provided so as to be located above two fork pockets 14d1 of a lower main frame 14d, which will be described later.

[0020] The front support portion 12a is a support member disposed at a position closer to the front end 12f of the tank 12 than to the longitudinal center of the tank 12. When the tank 12 is fixed to a predetermined position on the frame 14, the front of the tank 12 is supported by this front support portion 12a at a position spaced a height h1 above the upper surface 14d2 of the lower main frame 14d.

[0021] On the other hand, the rear support portion 12b is a support member disposed at a position closer to the rear end 12e of the tank 12 than to the longitudinal center of the tank 12. When the tank 12 is fixed to a predetermined position on the frame 14, the rear of the tank 12 is supported by this rear support portion 12b at a position spaced a height h2 above the upper surface 14d2 of the lower main frame 14d.

[0022] In this example, when the tank 12 is fixed to the frame 14, the rear of the tank 12 is supported by the rear support portion 12b at a height h2 (h2 The support is provided at a distance h2 above the<h1>

[0023] Therefore, the tank 12 is fixed to the frame 14 so that the bottom surface 12c of the tank 12 slopes downward from one side (front end 12f) to the other side (rear end 12e) in the longitudinal direction of the tank 12.

[0024] According to this example, the liquid contained in the tank 12 can be discharged to the outside more quickly when unloading than when the bottom surface 12c of the tank 12 is horizontal, and residual liquid can be prevented from remaining in the tank 12.

[0025] 1(b) and 1(d), a liquid outlet 17 is provided at the lowest point of the rear end 12e of the tank 12 so as to communicate with the tank 12. The liquid outlet 17 is an outlet for discharging the liquid contained in the tank 12 to the outside of the tank 12, and this liquid outlet 17 is provided with a device such as a discharge valve.

[0026] In this example, the tank 12 is fixed to the frame 14 so as to slope downward from the front end 12f to the rear end 12e, and the liquid outlet 17 is located at the lowest position in the tank 12, which not only shortens the discharge time when unloading but also prevents residual liquid from remaining in the tank 12.

[0027] FIG. 2 is a diagram showing an example of the inclination angle of the bottom surface 12c of the tank 12. As shown in FIG.

[0028] In FIG. 2, the line indicated by the symbol HL indicates a horizontal line that is approximately horizontal with the upper surface 14d2 of the lower main frame 14d, and the angles indicated by the symbols θ1 to θ5 in the same figure indicate the angles between the horizontal line HL and the bottom surface 12c of the tank 12.

[0029] The inclination angle of the bottom surface 12c of the tank 12 is not particularly limited, but is preferably 1 degree or more and 5 degrees or less (θ1=1 degree, θ2=2 degrees, θ3=3 degrees, θ4=4 degrees, θ5=5 degrees).

[0030] In addition, the inclination angle of the bottom surface 12c of the tank 12 may be set to increase as the specific gravity of the liquid contained in the tank 12 increases. For example, when hypochlorous acid water, which has a specific gravity of approximately 1.17 and is relatively light, is contained in the tank 12, the inclination angle of the tank 12 may be set to, for example, θ1 = 1 degree, and when sulfuric acid, which has a specific gravity of approximately 1.84 and is relatively heavy, is contained in the tank 12, the inclination angle of the tank 12 may be set to, for example, θ5 = 5 degrees.

[0031] With this configuration, an appropriate inclination angle can be set in accordance with the characteristics of the liquid contained in the tank 12, further shortening the discharge time when unloading.

[0032] As mentioned above, the liquid outlet 17 is provided at the lowest point of the rear end 12e of the tank 12, and specifically, as shown in Figure 2, the bottom surface 12c of the tank 12 and the bottom surface of the liquid outlet 17 are configured to be approximately flush when viewed from the side.

[0033] This allows the liquid contained in the tank 12 to flow smoothly to the liquid outlet 17, shortening the discharge time when unloading, and preventing residual liquid from remaining in the tank 12.

[0034] <frame> Next, the frame 14 of the tank container 10 will be described with reference to FIGS. 1(b) to 1(d).

[0035] The frame 14 is a member capable of supporting the tank 12, and in this example is made up of steel frame members. The frame 14 may be a beam type in which the tip of the frame 14 is connected to the surface of the tank 12, or it may be a full frame type.

[0036] As shown in Figures 1(b) to (d), the frame 14 is composed of a rectangular front frame 14a and an end frame 14b that respectively form the front end face (front end 12f) and the rear end face (rear end 12e) along the longitudinal direction of the tank 12, an upper main frame 14c that connects the upper parts of the front frame 14a and the end frame 14b, and a lower main frame 14d that connects the lower parts of the front frame 14a and the end frame 14b.

[0037] As shown in Figure 1(c), the front end 12f of the tank 12 is fixed to the front frame 14a via multiple frame members, etc., and the rear end 12e of the tank 12 is fixed to the end frame 14b via multiple frame members, etc., as shown in Figure 1(d).

[0038] 1(b), the lower main frame 14d is formed with fork pockets 14d1 at two locations, which are insertion holes into which the claws of a forklift (not shown) can be inserted. As described above, the front support portion 12a and the rear support portion 12b of the tank 12 are provided above the two fork pockets 14d1, respectively.

[0039] According to this example, when the tank container 10 is transported from the tank truck 20 to another location by a forklift, the tank container 10 can be transported while both the front support portion 12a and the rear support portion 12b of the tank 12 are supported from below by the forklift's claws, so that the balance between the tank 12 and the frame 14 can be maintained and the tank container 10 can be prevented from collapsing.

[0040] <Summary> As explained above, the tank container according to this embodiment (for example, the tank container 10 shown in Figures 1(a) and 1(b)) is a tank container comprising a tank capable of containing a liquid (for example, the tank 12 shown in Figure 1(b)) and a frame capable of supporting the tank (for example, the frame 14 shown in Figure 1(b)), characterized in that the tank is fixed to the frame so that the bottom surface of the tank (for example, the bottom surface 12c of the tank 12 shown in Figure 2) is inclined downward from one side (for example, the front end 12f) to the other side (for example, the rear end 12e) in the longitudinal direction of the tank.

[0041] According to the tank container of this embodiment, the liquid contained in the tank can be quickly discharged to the outside when unloading, and residual liquid can be prevented from remaining in the tank.

[0042] Furthermore, the inclination angles of the bottom surface of the tank (for example, the inclination angles θ1 to θ5 of the bottom surface 12c of the tank 12 shown in FIG. 2) may be set to be greater than or equal to 1 degree and less than or equal to 5 degrees (for example, θ1=1 degree, θ2=2 degrees, θ3=3 degrees, θ4=4 degrees, θ5=5 degrees), and may be set to be larger as the specific gravity of the liquid increases.

[0043] With this configuration, an appropriate inclination angle can be set according to the characteristics of the liquid contained in the tank, further shortening the discharge time when unloading.

[0044] The tank may also be provided with a liquid outlet (for example, liquid outlet 17 shown in Figures 1(b) and (d)) for discharging the liquid to the outside, and the liquid outlet may be provided at the lowest position in the tank.

[0045] With this configuration, the discharge time during unloading can be further reduced and residual liquid can be prevented from remaining in the tank.

[0046] The tank may also include a one-side support portion (for example, the front support portion 12a shown in FIG. 1(b)) that supports the one side of the tank, and an other-side support portion (for example, the rear support portion 12b shown in FIG. 1(b)) that supports the other side of the tank, and the frame may be formed with fork pockets (for example, the fork pockets 14d1 shown in FIG. 1(b)) into which the tines of a forklift can be inserted, and the one-side support portion and the other-side support portion may be located above the fork pockets.

[0047] With this configuration, when a tank container is transported from a tank truck to another location using a forklift, the forklift's claws can support the lower parts of one side support part and the other side support part of the tank, thereby maintaining the balance between the tank and the frame and preventing the tank container from collapsing.

[0048] It should be noted that the configuration of the tank container of the present invention is not limited to the configuration of the tank container 10 according to the above-described embodiment, and it goes without saying that various modifications can be made within the scope that does not deviate from the gist of the present invention.

[0049] Therefore, for example, although the above embodiment shows an example in which the bottom surface of the tank is inclined downward from the front to the rear in the longitudinal direction of the tank, the present invention is not limited to this, and the bottom surface of the tank may be inclined downward from the rear to the front in the longitudinal direction of the tank. In other words, it is sufficient that the tank is fixed to the frame so that the bottom surface of the tank is inclined downward from one side to the other in the longitudinal direction of the tank.

[0050] In addition, in the above embodiment, an example was shown in which the bottom surface of the tank is tilted downward from the front to the rear by the front support portion 12a and the rear support portion 12b provided on the tank 12, but the present invention is not limited to this. For example, the bottom surface of the tank may be tilted downward from the front to the rear by providing only the front support portion 12a without providing the rear support portion 12b.

[0051] Also, for example, the bottom surface of the tank may be tilted downward from the front to the rear by supporting the tank 12 in a downwardly inclined state with the frame 14 without providing the front support portion 12a and the rear support portion 12b. [Industrial Applicability]

[0052] The tank container of the present invention can be applied to a tank container for carrying liquids such as chemicals. [Explanation of symbols]

[0053] 10 Tank Container 12 Tank 12a Front support part 12b Rear support part 12c bottom 12f front end 12e rear end 14 frames 14a Front Frame 14b End Frame 14c Upper Main Frame 14d Lower Main Frame 14d1 Fork pocket 15 Upper Spill Box 16 Manhole 17 Liquid outlet 20 Tanker Truck θ1~θ5 Tilt angle

Claims

1. A tank container comprising a tank capable of containing a liquid therein and a frame capable of supporting the tank, The tank is fixed to the frame so that the bottom surface of the tank slopes downward from one side to the other side in the longitudinal direction of the tank. A tank container characterized by:

2. The tank container according to claim 1, The inclination angle of the bottom surface of the tank is set to be greater than or equal to 1 degree and less than or equal to 5 degrees, and the inclination angle is set to be greater as the specific gravity of the liquid increases. A tank container characterized by:

3. The tank container according to claim 1 or 2, The tank is provided with a liquid outlet for discharging the liquid to the outside, The liquid outlet is provided at the lowest position in the tank. A tank container characterized by:

4. The tank container according to claim 1 or 2, the tank includes a one-side support portion that supports the one side of the tank and an other-side support portion that supports the other side of the tank, The frame is formed with fork pockets into which the claws of a forklift can be inserted, The one-side support portion and the other-side support portion are disposed above the fork pocket. A tank container characterized by:

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