ISO tank container with enhanced usability

Abstract

The invention relates to an ISO tank container which comprises a tank body and a flexible liquid storage bag, wherein one side of the lower end of the tank body is provided with a first valve used for discharging transportation materials, the upper end of the tank body is provided with a second valve used for controlling the internal environment, and the flexible liquid storage bag is in a tubular bag shape and installed in the tank body to contain the transportation materials. A first tank body connector communicated with the first valve and a second tank body connector communicated with the second valve are arranged on the inner side of the tank body, and the container bag is combined with the tank body through the first tank body connector and the second tank body connector, so that transported materials can be discharged through the first valve, and the internal environment can be controlled through the second valve. The invention relates to an ISO tank container with improved usability.

Description

Technical Field

[0001] This invention relates to ISO tank containers, and more particularly, to ISO tank containers that enhance usability by installing flexible liquid storage bags inside the tank. Background Technology

[0002] ISO tank containers are manufactured according to specifications set by the International Organization for Standardization (ISO) for the safe transport of various types of substances, including liquids, gases, and powders. These containers possess strong durability and corrosion resistance, making them particularly suitable for transporting dangerous goods, primarily chemicals, food, and pharmaceuticals. However, traditional ISO tank containers often leave residues after unloading. Due to the internal structure of the tank, it is difficult to completely empty the transported material, leading to time-consuming and costly cleaning processes depending on the type of transported substance. This is especially true when transporting different chemicals, where thorough cleaning is necessary to prevent contamination from residues. Furthermore, return trips often require empty containers, resulting in low cost-efficiency. The fixed structure of traditional ISO tank containers also makes it difficult to easily load other transported substances, leading to wasted costs and resources when returning empty containers.

[0003] On the other hand, Flexitank containers are containers equipped with disposable bag-shaped liners for transporting liquid cargo. They have the advantage that the transported substance does not directly contact the inside of the tank, thus preventing contamination problems and eliminating the need for a cleaning process. However, Flexitank containers have relatively low durability and may be damaged during transportation, especially if they are damaged by impact or pressure, which could lead to leakage of the transported substance and cause environmental pollution.

[0004] Therefore, there is an industry demand for a new type of ISO tank container that solves the problems of traditional ISO tank containers and flexible liquid storage bag containers, while also being durable, economical, and usable.

[0005] As prior art to this invention, reference can be made to Korean Patent Registration No. 10-2351018 (January 10, 2022). Summary of the Invention

[0006] Technical issues

[0007] The purpose of this invention is to provide an enhanced ISO tank container that possesses strong durability and corrosion resistance, enabling stable transport of materials, including hazardous materials. It also allows for easy loading of new materials upon return after delivery, thus providing cost reduction and logistical management flexibility. Furthermore, depending on the nature of the transported materials, flexible storage bags or ISO tanks can be used to contain them. The technical problems addressed by this invention are not limited to the above description, and other technical problems may arise from the following description.

[0008] Solution to the problem

[0009] According to one aspect of the present invention, an ISO tank container includes: a tank body (10) formed in the shape of a hollow cylinder, with a first valve (12) for discharging transported material on one side of the lower end and a second valve (15) for controlling the internal environment on the upper end; and a flexible liquid storage bag (20) formed in the shape of a tubular bag, installed in the tank body to contain the transported material, wherein the inner side of the tank body (10) is provided with a first tank body connector (110) communicating with the first valve (12) and a second tank body connector (120) communicating with the second valve (15), and the flexible liquid storage bag (20) is connected to the tank body (10) through the first tank body connector (110) and the second tank body connector (120), thereby discharging the transported material through the first valve (12) and controlling the internal environment through the second valve (15).

[0010] The first tank connector (110) includes a first connecting portion (111) formed in the shape of a hollow cylinder. The first connecting portion (111) is installed inside the tank (10) such that the internal hollow portion surrounds at least a portion of the first valve hole (11) of the tank, so that the transport material contained in the flexible liquid storage bag (20) can move along the hollow portion of the first tank connector (110) and be discharged through the first valve hole (11).

[0011] The first connecting part (111) is formed into a hollow, open cylindrical shape by cutting along the length direction and removing a portion of the surrounding part. When the first connecting part (111) is installed, the open part with the removed portion of the surrounding part faces the bottom surface of the tank body (10), thereby opening the path for the transported material to move from the lower side of the first valve hole (11) to the first valve hole (11).

[0012] The lower end of the flexible liquid storage bag (20) is provided with a second connecting part (211). The second connecting part (211) is formed into a hollow, open cylindrical shape by cutting along the length direction and removing a portion of the surrounding area. The inner and outer diameters of the second connecting part (211) are the same as those of the first connecting part (111). The cut surfaces on both sides of the second connecting part (211) are in contact with the cut surfaces on both sides of the first connecting part (111), thereby forming a channel for transporting materials inside the first connecting part (111) and the second connecting part (211).

[0013] The central angle of the arc formed by the cross section of the first connecting part (111) can be between 180 degrees and 270 degrees.

[0014] Each of the two sides around the first connecting part (111) has a sealing groove (1112) formed along the length of each groove. Each of the two sides around the second connecting part (211) has a sealing protrusion (2112) with a shape corresponding to the sealing groove (1112) formed along the length of each groove. By embedding the sealing protrusion (2112) into the sealing groove (1112), the sealing performance between the first connecting part (111) and the second connecting part (211) can be improved.

[0015] The internal capacity of the flexible liquid storage bag (20) can be greater than the internal capacity of the tank (10).

[0016] The upper end of the tank (10) has at least one pre-drilled hole (17), and the flexible liquid storage bag (20) is provided with multiple support ropes (23). One end of each support rope is fixed to the outer surface of the flexible liquid storage bag (20), and the other end is located outside the tank (10) through the pre-drilled hole (17) at the upper end of the tank (10), so that the flexible liquid storage bag (20) can be lifted from outside the tank (10) using each support rope (23).

[0017] The effects of the invention

[0018] The present invention includes a tank having a first valve on one side of its lower end for discharging transported substances and a second valve on its upper end for controlling the internal environment, and a flexible liquid storage bag formed into a tubular bag shape and installed in the tank to contain the transported substances. The inner side of the tank has a first tank connector communicating with the first valve and a second tank connector communicating with the second valve. The flexible liquid storage bag is connected to the tank through the first tank connector and the second tank connector, so that the transported substances can be discharged through the first valve and the internal environment can be controlled by the second valve. Therefore, it is not necessary to install a separate valve for the flexible liquid storage bag, which is economical and improves usability.

[0019] Furthermore, since the flexible storage bag is fixed inside the tank, its durability and safety are improved. After the transported material is discharged at the destination, the flexible storage bag can be separated simply by disconnecting the connector, which is highly advantageous for additional transport on the return trip. The effects of this invention are not limited to the above; other effects may be derived from the following description. Attached Figure Description

[0020] Figure 1 This is a perspective view of an ISO tank container according to an embodiment of the present invention.

[0021] Figure 2 It is a display Figure 1 The diagram shown depicts the interior of an ISO tank container.

[0022] Figure 3 yes Figure 1 The image shows a top view of an ISO tank container.

[0023] Figure 4 yes Figure 1 The diagram shows a schematic side section of an ISO tank container.

[0024] Figure 5 It is a display Figure 4 The diagram shows the connector for the first tank body.

[0025] Figure 6 This is a diagram showing the combination of a first can connector and a first bag connector according to an embodiment of the present invention.

[0026] Figure 7 This is a diagram showing the combination of a first can connector and a first bag connector according to another embodiment of the present invention.

[0027] Figure 8 This is a diagram showing the connection between the container bag and the tank body via a manhole cover according to an embodiment of the present invention.

[0028] Figure 9 This is a diagram showing the state of using multiple support ropes according to an embodiment of the present invention. Detailed Implementation

[0029] The following detailed description of the invention refers to the accompanying drawings, which illustrate specific embodiments in which the invention can be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the invention, while different, are not necessarily mutually exclusive. For example, specific shapes, structures, and characteristics described herein can be implemented in one embodiment as another without departing from the spirit and scope of the invention.

[0030] Furthermore, it should be understood that the position or arrangement of the various constituent elements within the various disclosed embodiments may be changed without departing from the spirit and scope of the invention. Therefore, the following detailed description should not be construed as limiting, and the scope of the invention is defined only by the appended claims, and, if suitably described, includes all scopes equivalent to those claims. Similar reference numerals in the figures refer to the same or similar functions in several respects.

[0031] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to enable those skilled in the art to readily implement the present invention.

[0032] The embodiments of the present invention described below relate to an ISO tank container with enhanced usability. The ISO tank container with enhanced usability may be simply referred to as a "tank container". According to this embodiment, the ISO tank container (1) can either directly place the transport material inside the tank (10) for transport, or place the transport material inside a flexible liquid storage bag (20) after installing it inside the tank (10) for transport, thus enhancing usability. Various embodiments of the tank container (1) will be described below with reference to the accompanying drawings of the present invention.

[0033] Figure 1 This is a perspective view of a tank container (1) according to an embodiment of the present invention. Figure 2 This is a diagram showing the removal of a portion of the upper side of the tank body (10) to illustrate the flexible liquid storage bag (20) contained inside the tank container (1) according to this embodiment. (Refer to...) Figure 1 and Figure 2 As can be seen, the tank container (1) according to this embodiment is composed of an outer frame (F), a tank (10) and a flexible liquid storage bag (20).

[0034] The outer frame (F) is a cuboid-shaped frame woven around the tank (10) to support it. This outer frame (F) is a technology well known to those skilled in the art to which this embodiment pertains, and detailed description is omitted to avoid obscuring the features of this embodiment.

[0035] The tank (10) is formed into a hollow cylindrical shape, which contains the transported substance. At this time, the transported substance contained inside the tank (10) can be a liquid or a gas, or, depending on the situation, a solid such as grain.

[0036] The tank (10) is manufactured according to the specifications set by the International Organization for Standardization (ISO). According to these specifications, a first valve hole (11) is formed on one side of the lower end of the tank (10) for introducing or withdrawing transported material contained inside the tank (10), and a first valve (12) for opening and closing the first valve hole (11) is provided on the outside of the tank (10). On the other hand, a manhole (13) for entering the tank is formed at the upper end of the tank (10), and a manhole cover (14) for sealing the manhole is installed on the manhole. Furthermore, at least one control valve for controlling the interior of the tank is provided at the upper end of the tank (10). For example, at least one of a pressure relief valve for releasing pressure when overpressure occurs inside the tank and an air valve for regulating the pressure inside the tank by injecting or releasing air can be installed at the upper end of the tank (10), and other valves may also be installed at the upper end of the tank (10). In addition, besides the valves already installed, the upper end of the tank (10) can also have additional pre-drilled holes (17) for installing additional valves. For ease of explanation, it is assumed that a second valve (15) and a third valve (16) are installed on the upper end of the tank (10), but those skilled in the art will readily understand that the type and number of valves installed on the upper end of the tank (10) may vary depending on the environment.

[0037] The tank (10) according to this embodiment is formed by adding several components to a tank manufactured according to ISO specifications. Therefore, operators can use it skillfully, improving work efficiency, and there is no need to remake the tank. The tank (10) according to this embodiment can be made using existing tanks, which is economical and practical. In addition, the shape is the same as the existing ISO tank container, and the existing loading and transportation system can be used as is, which is convenient and practical.

[0038] Figure 3 This is a top view of a tank container (1) according to an embodiment of the present invention. Figure 3 To more clearly show the multiple holes formed at the upper end of the tank (10), the manhole cover (14), the second valve (15), and the third valve (16) are omitted from the display. (See reference...) Figure 3As can be seen, the upper end of the tank (10) according to this embodiment has a manhole (13), a second valve hole (18), a third valve hole (19), a first preparatory hole (17a), and a second preparatory hole (17b). A manhole cover (14) is installed on the manhole (13), a second valve (15) is installed on the second valve hole (18), and a third valve (16) is installed on the third valve hole (19). The first preparatory hole (17a) and the second preparatory hole (17b) can be fitted with necessary valves, etc., as needed. Unused preparatory holes (17) are kept sealed with covers to regulate the internal pressure of the tank (10) and prevent leakage of transported materials. In this embodiment, support ropes (23) can be led out from the tank (10) through each preparatory hole (17). The use of support ropes (23) through each preparatory hole (17) will be explained later.

[0039] on the other hand, Figure 4 This is a side cross-sectional view of a tank (10) according to an embodiment of the present invention. (Refer to...) Figure 4 As can be seen, the lower end of the inner wall of the tank (10) according to this embodiment is provided with a first tank connector (110) that surrounds at least a portion of the first valve hole (11) and protrudes outwards. Referring to the first tank connector (110) shown in this embodiment... Figure 5 As can be seen, the first tank connector (110) according to this embodiment is composed of a sealing plate (112), a first connecting part (111), and an inflow protection net (113). Figure 5 a and Figure 5 b shows the structure of the first tank connector (110) according to this embodiment in more detail. To prevent obscuring the features of the invention, a portion of the first valve (12) as seen from inside the tank (10) is omitted.

[0040] Reference Figure 5 a. The sealing plate (112) is formed as an elastic plate, with its rear end in close contact with the inner wall of the tank (10) and its front end in close contact with the underside of the first connecting part (111), thereby making the first connecting part (111) and the inner wall of the tank (10) more tightly sealed. In this embodiment, the sealing plate (112) can be formed as a circular plate, with a hole (112a) of the same size as the first valve hole (11) formed at the lower end of the tank (10) formed in the center. The sealing plate (112) is installed on the inner side of the tank (10) so that the hole (112a) formed in the center overlaps with the first valve hole (11). In this embodiment, the transported substance contained inside the tank (10) may be a corrosive liquid, and the front end of the sealing plate (112) installed around the first valve hole (11) will directly contact the transported substance. Therefore, the sealing plate (112) is preferably made of a highly corrosion-resistant material. In this embodiment, the sealing plate (112) can be made of silicone and can have a thickness of about 4 mm.

[0041] In one embodiment of the present invention, a circular strip-shaped close-fitting protrusion (112b) centered on the center of the sealing plate (112) is formed on the sealing plate (112). The close-fitting protrusion (112b) improves the sealing performance of the connection by increasing the contact area between the bottom of the first connecting portion (111) and the second connecting portion (211) and the sealing plate (112).

[0042] The first connecting part (111) is formed into a hollow cylindrical shape, which is closely connected to the front of the sealing plate (112) at the bottom and protrudes into the interior of the tank body (10) at the top. The first connecting part (111) is connected to the flexible liquid storage bag (20), so that the transport material contained inside the flexible liquid storage bag (20) can move through the hollow part inside the first connecting part (111) and be discharged to the outside through the first valve hole (11) of the tank body (10).

[0043] In this embodiment, the first connecting portion (111) can be formed into a hollow, open cylindrical shape by cutting along its length and removing a portion of its surroundings. Therefore, the cross-section of the first connecting portion (111) forms an arc shape. By cutting away a portion of its surroundings along its length, the first connecting portion (111) forms two perpendicular cut surfaces (1111) to its top and bottom. In embodiments of the invention, the central angle of the arc formed by the cross-section of the first connecting portion (111) can be between 180 degrees and 270 degrees.

[0044] In one embodiment of the present invention, the first connecting portion (111) is as follows: Figure 5 As shown in Figure a, a semi-circular cross-section with a central angle of 180 degrees can be formed by removing half of the periphery along the length direction. On the other hand, when the first connecting part (111) according to this embodiment is installed, the open part with a portion of the periphery removed faces the bottom surface of the tank (10). This allows the transported material to move from the lower side of the first valve hole (11) to the first valve hole (11) by opening the path, thereby minimizing the residue of the transported material inside the tank (10) or the flexible storage bag (20).

[0045] More specifically, if the first connecting part (111) is not removed from its lower side and is made into a complete tube, when the tank (10) is tilted to discharge the residual transport material without leaving any residue, the lower peripheral surface of the first connecting part (111) will block the transport material from the lower end of the tank (10) from flowing into the first valve hole (11), making it difficult to achieve smooth discharge of the transport material. According to the first connecting part (111) of this embodiment, by removing a portion of its lower peripheral surface, when the tank (10) is tilted, the residual transport material from the bottom surface of the tank (10) can immediately move to the first valve hole (11), so the handling of the residual transport material is very easy.

[0046] On the other hand, such as Figure 5 As shown in b, a sealing groove (1112) is formed along the length direction on each cross-section (1111) of the first connecting part (111) according to this embodiment. A thread is formed on the peripheral surface of the first connecting part (111), so that the first connecting part (111) can be threadedly engaged with the nut.

[0047] The inflow protection net (113) is formed as a plate with multiple horizontal and vertical lines interwoven into a grid pattern. It is fixed to one end of the first connecting part (111) protruding into the tank body (10), with its front end parallel to the top of the first connecting part (111). The material transported inside the tank body (10), which is composed of liquid or gas, passes through the inflow protection net (113) through the holes (1131) formed between adjacent horizontal and vertical lines and is discharged to the outside through the first connecting part (111). However, the flexible liquid storage bag (20) cannot pass through the holes (1131) formed between adjacent horizontal and vertical lines of the inflow protection net (113). Therefore, by installing the inflow protection net (113) at one end of the first connecting part (111), the flexible liquid storage bag (20) can be prevented from being sucked into the first connecting part (111) due to the strong pump pressure of the discharged transported material. This can prevent failure and ensure continuous operation.

[0048] In this embodiment, the inflow protection net (113) can be formed as a plate with the same cross-section as the transport material conveying channel formed inside the first connecting part (111) and the second connecting part (211) that are joined together. For example, the inflow protection net (113) can be formed as a circular plate, so that the inflow protection net (113) can completely block the formed channel when the first connecting part (111) and the second connecting part (211) are joined together.

[0049] On the other hand, the upper end of the inner wall of the tank (10) is provided with a second tank connector (120) protruding around the second valve hole (18) and a third tank connector (130) protruding around the third valve hole (19). The second tank connector (120) communicates with the second valve (15), and the third tank connector (130) communicates with the third valve hole (19). The second tank connector (120) and the third tank connector (130) can be male connectors, and their diameters are determined according to the outer diameters of the second valve hole (18) and the third valve hole (19), respectively.

[0050] The flexible storage bag (20) is formed into a tubular bag shape and installed inside the tank (10), containing the transported substance. The inner skin of the flexible storage bag (20) is made of multi-layered polyethylene, and the outer skin can be made of polypropylene. In an embodiment of the invention, the flexible storage bag (20) has a larger capacity than the tank (10). In this embodiment, the capacity of the flexible storage bag (20) can be about 105% of the capacity of the tank (10). For example, if the internal capacity of the tank (10) is 25,000 L, the capacity of the flexible storage bag (20) can be 26,250 L. This is to maximize the contact area between the surface of the flexible storage bag (20) and the inner wall of the tank (10) when the flexible storage bag (20) is injected with the transported substance while fixed inside the tank (10) and expands to its maximum size inside the tank (10), thereby improving the stability of the flexible storage bag (20). According to this embodiment, the tank (10) is formed in a cylindrical shape, which is advantageous as the transported material is filled, as it can maximize the contact area with the flexible liquid storage bag (20) that expands in a gently circular shape.

[0051] A hole is formed at the lower end of one side of the flexible liquid storage bag (20), and a first bag body connector (210) is configured to communicate with this hole. The first bag body connector (210) is formed in the shape of a hollow cylinder, fixed to one side surface of the flexible liquid storage bag (20) at the top, and protruding outward of the flexible liquid storage bag (20) at the bottom. The first bag body connector (210) of the flexible liquid storage bag (20) is connected to a first tank body connector (110) protruding from the lower side of the tank body (10), thus combining the flexible liquid storage bag (20) and the tank body (10), thereby allowing the transport material contained in the flexible liquid storage bag (20) to be discharged to the outside through the first valve hole (11) of the tank body (10).

[0052] Figure 6 a shows a first bag connector (210) according to an embodiment of the present invention. (Refer to...) Figure 6As can be seen, the first bag connector (210) includes a second connecting portion (211) and a fastening nut (212). In this embodiment, the second connecting portion (211) is formed into a hollow, open cylindrical shape by cutting along its length and removing a portion of its periphery, and the cross-section of the second connecting portion (211) is arc-shaped. By cutting along its length, the second connecting portion (2111) has two cut surfaces (2111) perpendicular to the top and bottom. In an embodiment of the invention, the central angle of the arc formed by the cross-section of the second connecting portion (211) is 90 degrees to 180 degrees, and the central angle of the arc formed by the cross-section of the second connecting portion (211) is determined by subtracting the central angle of the arc formed by the cross-section of the first connecting portion (111) from 360 degrees. The inner and outer diameters of the second connecting portion (211) are the same as those of the first connecting portion (111), and the outer peripheral surface of the second connecting portion (211) is threaded. Therefore, when the second connecting part (211) is fixed to the open portion of the first connecting part (111), the first connecting part (111) and the second connecting part (211) that are joined together form a threaded shaft with threads on its outer peripheral surface. In this way, the cut surfaces (2111) on both sides around the second connecting part (211) contact and join with the cut surfaces (1111) on both sides around the first connecting part (111), thereby forming a channel for transporting materials inside the first connecting part (111) and the second connecting part (211).

[0053] The two cross-sections (2111) of the second connecting portion (2111) each have a protruding sealing protrusion (2112) corresponding to the sealing grooves (1112) formed on each cross-section (2111) of the first connecting portion (111). The second connecting portion (2111) inserts the sealing protrusions (2112) formed on each cross-section (2111) of the first connecting portion (111) from the lower side of the first connecting portion (111), thus engaging with the first connecting portion (111). Therefore, the first connecting portion (111) and the second connecting portion (211) are more tightly engaged, which prevents transported substances, including hazardous materials, from leaking outside the flexible storage bag (20), but instead safely discharges them outside the tank (10).

[0054] The fastening nut (212) is formed as a ring with threads on its inner circumferential surface. When the sealing protrusion (2112) of the second connecting part (211) and the sealing groove (1112) of the first connecting part (111) are fixed together, as... Figure 6 As shown in b, the threads on the outer peripheral surfaces of the first connecting part (111) and the second connecting part (211) are used to thread the circumference of the first connecting part (111) and the second connecting part (211), thereby connecting the first connecting part (111) and the second connecting part (211). Figure 6b. To clearly show the connection status of the first connecting part (111) and the second connecting part (211), the display of the flexible liquid storage bag (20) is omitted.

[0055] In this embodiment, the fastening nut (212) has multiple bends (212a) formed around it to facilitate the connection and disconnection of the first connecting part (111) and the second connecting part (211). The user can insert his / her fingers between these bends (212a) to rotate the fastening nut (212), thereby transmitting force to the fastening nut (212) more effectively.

[0056] Figure 7 This is a diagram showing a first pocket connector (210) according to another embodiment of the present invention. (Refer to...) Figure 7 As can be seen, the first bag connector (210) according to this embodiment is formed into a hollow cylindrical shape. The inner diameter of the first bag connector (210) is larger than the outer diameter of the first connecting portion (111) of the first can connector (110). The first bag connector (210) and the first can connector (110) are joined by inserting the first connecting portion (111) into the hollow interior of the first bag connector (210). The first bag connector (210) can be connected to the first connecting portion (111) in various ways, such as BSP thread or Camlock mounting.

[0057] On the other hand, the upper side of the flexible liquid storage bag (20) is provided with a second bag connector (220) and a third bag connector (230). The second bag connector (220) has a structure that can be coupled with the second tank connector (120), and the third bag connector (230) has a structure that can be coupled with the third tank connector (130). In this embodiment, the second bag connector (220) and the third bag connector (230) can be female connectors. The second bag connector (220) and the third bag connector (230) are in communication with the interior of the flexible liquid storage bag (20).

[0058] The flexible liquid storage bag (20) is connected to the second tank connector (120) of the second valve (15) using a second bag connector (220), and to the third tank connector (130) of the third valve (16) using a third bag connector (230). This allows the second valve (15) and the third valve (16), which operate to control the interior of the tank (10), to operate to control the interior of the flexible liquid storage bag (20) installed inside the tank (10). That is, according to this embodiment, the flexible liquid storage bag (20) is installed inside the tank (10) using a first bag connector (210), a second bag connector (220), and a third bag connector (230) to connect to the first valve (12), the second valve (15), and the third valve (16) pre-installed on the tank (10). This eliminates the need to install additional valves for the operation of the flexible liquid storage bag (20), allowing the existing valves of the tank (10) to operate for the flexible liquid storage bag (20).

[0059] Therefore, operators do not need to learn how to use separate valves and can use the valves used in existing ISO tanks to adjust the pressure inside the flexible storage bag (20), making adaptation to the ISO tank container (1) according to this embodiment very easy. In addition, the tank (10) of the ISO tank container (1) according to this embodiment can be used simply by installing the first tank connector (110), the second tank connector (120), and the third tank connector (130) inside the existing manufactured ISO tank, which is economical and convenient.

[0060] In this embodiment, the second bag connector (220) and the third bag connector (230) can be connected to the flexible liquid storage bag (20) using tubes (not shown). That is, one end of the tube is connected to the flexible liquid storage bag (20), and the other end is connected to the bag connectors (220, 230), thereby connecting the flexible liquid storage bag (20) and each bag connector (220, 230). In this way, each tube connects the second bag connector (220) to the flexible liquid storage bag (20), and the third bag connector (230) to the flexible liquid storage bag (20), thereby stably connecting the flexible liquid storage bag (20) and each bag connector (220, 230). More specifically, during ISO tank container transportation, the tank (10) will sway. If the transported substance contained inside the flexible liquid storage bag (20) is liquid, the inner surface of the flexible liquid storage bag (20) may be subjected to strong pressure due to the swaying of the liquid. If the flexible storage bag (20) is fixedly attached to the tank (10), the inner surface of the flexible storage bag (20) may not be able to distribute the pressure and could tear. Therefore, the tube is preferably made of a flexible and elastic material. For example, in this embodiment, the tube can be made of silicone.

[0061] On the other hand, the flexible liquid storage bag (20) according to this embodiment is as follows: Figure 8 As shown in Figure a, an upper inlet (21) is formed at the upper end. The upper inlet (21) is connected to a manhole (13) formed on the upper side of the tank (10), so that the transport material put in through the manhole (13) of the tank (10) is contained inside the flexible storage bag (20). This is very advantageous for putting solids such as grains that are difficult to put in through the first valve (12) into the flexible storage bag (20). For the sake of clear showing of the upper inlet (21), the first bag connector (210), the second bag connector (220) and the third bag connector (230) are omitted, which will be easily understood by those skilled in the art. According to this embodiment, the area of ​​the upper inlet (21) is formed to be the same as or larger than the area of ​​the manhole (13), which is conducive to the smooth input of the transport material.

[0062] The flexible liquid storage bag (20) according to this embodiment may be provided with a manhole insert (22). The manhole insert (22) has higher rigidity than the flexible liquid storage bag (20) and extends upward around the upper inlet (21), thereby shaping the inlet of the irregular upper inlet (21). Therefore, the easily deformable upper inlet (21) can be easily kept open, thereby allowing for more stable containment of transported substances. In this embodiment, the manhole insert (22) is made of synthetic resin such as plastic or silicone. The end of the manhole insert (22) is bent outward to form a snap-fit ​​portion (221). The manhole insert (22) is as follows Figure 8 As shown in b, the protrusion (141) of the manhole cover (14) protruding around the manhole (13) is inserted into the snap part (221) and combined with the manhole cover (14).

[0063] like Figure 8 As shown in Figure c, the manhole insert (22) is connected to the manhole cover (14) from the inside of the tank (10) through the manhole (13) via the snap-fit ​​part (221). Therefore, the manhole (13) is directly connected to the interior of the flexible storage bag (20). Thus, the transport material introduced through the manhole (13) can be easily transported to the flexible storage bag (20). On the other hand, with the manhole insert (22) sandwiched between the cover (14a) and the protrusion (141) of the manhole cover (14), the manhole cover (14) is closed, thus further improving the sealing force of the manhole cover (14).

[0064] According to an embodiment of the present invention, the tank container (1) is provided with tank connectors (110, 120, 130) and bag connectors (210, 220, 230) corresponding to the valves formed according to ISO specifications on the tank body (10) and the flexible liquid storage bag (20). The flexible liquid storage bag (20) is installed inside the tank body (10) by combining the tank connectors (110, 120, 130) and the bag connectors (210, 220, 230), thereby simultaneously utilizing the advantages of the tank body (10) and the flexible liquid storage bag (20).

[0065] On the other hand, the flexible storage bag (20) has an amorphous shape that increases in volume as it contains the substance, and therefore has a small volume when initially installed inside the tank (10). Therefore, in order to connect the second bag connector (220) and the third bag connector (230) located at the upper end of the flexible storage bag (20) to the second tank connector (120) and the third tank connector (130) located at the upper end of the tank (10), respectively, there may be difficulties in lifting the flexible storage bag (20) upwards.

[0066] Multiple support ropes (23) can be fixed to the outer surface of the flexible liquid storage bag (20) according to this embodiment. One end of each support rope (23) is fixed to the outer surface of the flexible liquid storage bag (20), and the other end is located outside the tank body (10) through a pre-drilled hole (17) formed on the upper side of the tank body (10). Therefore, the operator can pull the multiple support ropes (23) from the outside of the tank body (10) to lift the flexible liquid storage bag (20), so that each bag connector (210, 220, 230) is close to the tank connector (110, 120, 130), which facilitates the installation of the flexible liquid storage bag (20).

[0067] Figure 9 Figure a is a diagram showing multiple support ropes (23) installed on a flexible liquid storage bag (20) according to this embodiment. Figure 9 As shown in diagram a, in order to stably lift the flexible liquid storage bag (20), one end of each support rope (23) can be fixed to the lower end of the flexible liquid storage bag (20). On the other hand, in order to prevent the flexible liquid storage bag (20) from tilting to one side during lifting, each support rope (23) is preferably connected to the left and right sides of the flexible liquid storage bag (20). One end of a portion of the multiple support ropes (23) is fixed to the front side of the flexible liquid storage bag (20), and the other end is located outside the tank body (10) through a pre-drilled hole (17) provided on the front side of the upper end of the tank body (10). The remaining one end is fixed to the rear side of the flexible liquid storage bag (20), and the other end is located outside the tank body (10) through a pre-drilled hole (17) provided on the rear side of the upper end of the tank body (10). Therefore, when the operator installs the flexible liquid storage bag (20) inside the tank body (10), such as Figure 9As shown in b, the flexible liquid storage bag (20) can be lifted by pulling the support ropes (23) that come out through the pre-opening holes (17) on the front and rear sides of the tank (10), so as to facilitate its connection with the tank (10).

[0068] Subsequently, when the tank container (1) arrives at its destination and the transported material contained in the flexible storage bag (20) needs to be discharged, such as... Figure 9 As shown in Figure c, the rear end of the flexible storage bag (20) can be lifted by pulling the support rope (23) connected to the rear side of the flexible storage bag (20) through the pre-drilled hole (17) on the rear side of the upper end of the tank (10). Therefore, the bottom of the flexible storage bag (20) forms an inclination from the rear of the flexible storage bag (20) towards the front of the first valve hole (11), allowing the transport material contained in the flexible storage bag (20) to be smoothly discharged through the first valve hole (11). This is advantageous because it can produce the same effect very easily and simply compared to existing methods that require lifting and tilting the tank (10) to discharge all residual transport material.

[0069] According to this embodiment, the multiple support ropes (23) can be wound or unwound outside the tank body (10) using a winch located near the pre-opening hole (17). When it is necessary to close the pre-opening hole (17) for the movement of the tank container (1), they can be hung on hooks (not shown) located inside the tank body (10) for safekeeping.

[0070] According to an embodiment of the present invention, the tank container (1) is provided with a tank connector for each of at least one valve provided for the operation of the tank (10). A flexible liquid storage bag (20) is installed inside the tank (10) using a bag connector that is coupled to each tank connector. This eliminates the need to install a separate valve for the flexible liquid storage bag (20). The interior of the flexible liquid storage bag (20) can be controlled using the valve pre-installed on the tank (10), making it convenient and economical to use. Furthermore, since the installation and removal of the flexible liquid storage bag (20) is very convenient, after transporting the transported material using the flexible liquid storage bag (20), the flexible liquid storage bag (20) can be removed from inside the tank (10), and other transported materials can be directly loaded onto the tank (10) to return to the origin. The production efficiency is very high. At this time, it is not necessary to clean the tank (10) separately, thus saving time and costs significantly.

[0071] While the present invention has been described above through specific details such as specific constituent elements and limited embodiments and drawings, this is only provided to help understand the invention as a whole. The invention is not limited to the above embodiments, and those skilled in the art can seek various modifications and variations from this description.

[0072] Therefore, the concept of the present invention should not be limited to the above embodiments, not only to the claims described below, but also to all contents that are equivalent or modified to these claims.

Claims

1. A tank container, comprising: The tank (10) is formed into a hollow cylindrical shape, with a first valve (12) on one side of the lower end for discharging transported materials and a second valve (15) on the upper end for controlling the internal environment; and A flexible liquid storage bag (20), formed in the shape of a tubular bag, is installed inside the tank to contain the transported substance. Its features are, The inner side of the tank (10) is provided with a first tank connector (110) communicating with the first valve (12) and a second tank connector (120) communicating with the second valve (15). The flexible liquid storage bag (20) is connected to the tank (10) through the first tank connector (110) and the second tank connector (120), so that the transported material can be discharged through the first valve (12) and the internal environment can be controlled through the second valve (15).

2. The tank container according to claim 1, characterized in that, The first tank connector (110) includes a first connecting portion (111) formed in the shape of a hollow cylinder. The first connecting part (111) is installed inside the tank body (10) such that the internal hollow part surrounds at least a portion of the first valve hole (11) of the tank body, thereby allowing the transport material contained in the flexible liquid storage bag (20) to move along the hollow part of the first tank body connector (110) and be discharged through the first valve hole (11).

3. The tank container according to claim 2, characterized in that, The first connecting portion (111) is formed into a hollow, open cylindrical shape by cutting along its length and removing a portion of its surrounding structure. When the first connecting part (111) is installed, the opening part with a portion of the surrounding area removed faces the bottom surface of the tank body (10), thereby opening the path for the transported material to move from the underside of the first valve hole (11) to the first valve hole (11).

4. The tank container according to claim 3, characterized in that, The lower end of the flexible liquid storage bag (20) is provided with a second connecting part (211), which is formed into a hollow, open cylindrical shape by cutting along the length direction and removing a portion of the surrounding parts. The inner and outer diameters of the second connecting part (211) are the same as those of the first connecting part (111). The cut surfaces (2111) on both sides of the second connecting part (211) come into contact with the cut surfaces (1111) on both sides of the first connecting part (111), thereby forming a channel for transporting materials inside the first connecting part (111) and the second connecting part (211).

5. The tank container according to claim 3, characterized in that, The central angle of the arc formed by the cross section of the first connecting part (111) is 180 degrees to 270 degrees.

6. The tank container according to claim 4, characterized in that, Each of the two cut surfaces (1111) around the first connecting part (111) has a sealing groove (1112) formed along the length direction of each cut surface (1111). Each of the two sides of the second connecting part (2111) has a sealing protrusion (2112) with a shape corresponding to the sealing groove (1112) along the length direction of each side. The sealing performance between the first connecting part (111) and the second connecting part (211) is improved by embedding the sealing protrusion (2112) into the sealing groove (1112).

7. The tank container according to claim 1, characterized in that, The internal capacity of the flexible liquid storage bag (20) is greater than the internal capacity of the tank (10).

8. The tank container according to claim 1, characterized in that, The upper end of the tank (10) has at least one pre-drilled hole (17). The flexible liquid storage bag (20) is provided with multiple support ropes (23). One end of each support rope is fixed to the outer surface of the flexible liquid storage bag (20), and the other end is located outside the tank (10) through the pre-drilled hole (17) at the upper end of the tank (10). Thus, the flexible liquid storage bag (20) can be lifted from outside the tank (10) using each support rope (23).

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