Flange, liner bag assembly, container and welding method of liner bag assembly

Abstract

The present invention discloses a flange, wherein the flange has a structural weak area and a general area excluding the structural weak area, and an identification portion is provided in any one of the structural weak area and the general area. Since the identification portion is provided on the flange, and the identification portion is in the structural weak area with a bonding line, or in the general area without a bonding line, when the flange is welded to the discharge port of the liner bag, the main stress point of the flange can be avoided by the identification portion, thereby reducing the risk of the flange being torn, thereby improving the practicality of the container.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of logistics tool boxes, and in particular to a welding method of a flange, a liner bag assembly, a container and a liner bag assembly. Background Art

[0002] Nowadays, it is very common to use large containers to transport bulk liquids. These containers are made of metal, wood, and plastic. They all have a bottom and four side panels. Due to sealing issues, a liner bag is often placed inside the container, and the liquid is placed in the liner bag. A lid is then used to cover the container to protect the liner bag from being easily damaged.

[0003] A liner bag discharge port is provided on the liner belt, and the liner bag discharge port is connected to the valve of the container through a flange, so that the container can be filled with liquid. However, during actual use, the inventor found that the container often leaks for no reason, and the transportation distance of the container is generally long. When the container is transported to the destination, the solution in the liner bag has generally been completely leaked, which is bound to cause great economic losses. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a welding method for a flange, a liner bag assembly, a container and a liner bag assembly, so as to reduce the probability of container leakage.

[0005] To solve the above technical problems, an embodiment of the present invention provides a flange having a structurally weak area and a general area excluding the structurally weak area, and an identification portion is provided in any one of the structurally weak area and the general area.

[0006] Compared with the prior art, the embodiments of the present invention are different from the prior art. Since the liner bag is often damaged for no reason, the inventor has found through in-depth research that the reason why the liner bag leaks is most likely because the flange connected to the liner bag has cracks. The inventor has found through in-depth research that the reason why the flange is prone to cracks is that during the production process, such as the casting process, at least one joint line is formed on the flange, and the structure at the joint line is weak. Therefore, when the joint line is at the main stress point of the flange, it is easy to cause the joint line of the flange to be torn, and finally cause the flange to leak.

[0007] In order to obtain the main stress point of the flange, the inventor repeatedly observed and experimented and found that when the liner bag with the flange is placed in the container, due to the obstruction of the flange, part of the liner bag above the flange cannot be completely fitted with the inner wall of the box. During the transportation of the container, the solution in the liner bag keeps hitting all around. In other parts of the liner bag, since the liner bag is completely fitted with the inner wall of the box, the impact force of the solution is borne by the inner wall of the box, and no damage is caused to the liner bag and the flange. At the top of the flange, since the liner bag is not completely fitted with the inner wall of the box, the impact force of the solution is shared by the liner bag and the flange. Therefore, after the liner bag is placed in the box, the top of the flange is the main stress point of the flange, and the part where the liner bag and the main stress point of the flange overlap is also the main stress point of the liner bag.

[0008] Through the above analysis, it is not difficult to find that since the identification portion is provided on the flange, and the identification portion is located in a structural weak area with a joining line, or in a common area without a joining line, when the flange is welded to the discharge port of the liner bag, the main stress point of the flange can be avoided from the joining line through the identification portion, which can reduce the risk of the flange being torn, thereby improving the practicality of the container.

[0009] In one embodiment, the structural weak area is provided with the identification portion, and the common area is provided with a first marking member, and the first marking member is different from the identification portion;

[0010] Alternatively, the common area is provided with the identification portion, and the structurally weak area is provided with a second marking member, and the second marking member is different from the identification portion.

[0011] In one embodiment, there are multiple structural weak areas, and each structural weak area is provided with one identification portion;

[0012] Alternatively, there are multiple structural weak areas, the identification portion is arranged in the common area, each of the structural weak areas is evenly distributed around the center of the flange, and the identification portion is arranged at a central position between two adjacent structural weak areas.

[0013] In one embodiment, the structurally weak area and the common area are arranged along the circumferential direction of the flange.

[0014] In one embodiment, the flange is cast, and has a bonding line formed during the casting process, and the structural weak area is the area having the bonding line.

[0015] In one embodiment, the identification portion is a combination of any one or more of an adhesive label, a paint sprayed on the flange, a cutout opened on the flange, and a protrusion extending outward from the flange surface.

[0016] In one embodiment, the flange comprises:

[0017] A first connecting ring, wherein the outer surface of the first connecting ring has a buckle portion;

[0018] a second connecting ring, the second connecting ring being coaxially fixedly connected to the first connecting ring;

[0019] Wherein, the identification portion is located on the first connecting ring.

[0020] The present invention also provides a liner bag assembly, comprising: the above-mentioned flange and a liner bag;

[0021] The lining bag has a lining bag discharge port, the lining bag is fixedly connected to the flange at a peripheral portion of the lining bag discharge port, and the main stress point of the lining bag is arranged to avoid the structural weak area of ​​the flange.

[0022] In one embodiment, a mark is provided at the peripheral portion, and the mark is located at the main force-bearing point.

[0023] In one embodiment, the mark is a sticky mark or a paint sprayed on the main force point.

[0024] The present invention also provides a container, comprising:

[0025] A box body, wherein a box body discharge port is provided on the box body;

[0026] a valve operable to open or close the tank discharge port;

[0027] The above-mentioned liner bag assembly is arranged in the box body, and the flange is fixedly connected and communicated with the valve.

[0028] The present invention also provides a welding method for a liner bag assembly, and the specific steps are as follows:

[0029] Obtain the main force point at the liner bag discharge port of the liner bag;

[0030] The flange is used, and the structural weak area of ​​the flange is arranged away from the main force bearing point through the marking portion;

[0031] The peripheral portion of the liner bag located at the liner bag discharge port is connected to the flange by fusion welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0033] Figure 1 is a schematic structural diagram of a container in an embodiment of the present invention;

[0034] Figure 2a It is a schematic structural diagram of the flange and the casting during the casting process according to an embodiment of the present invention;

[0035] Figure 2b for Figure 2a Another perspective stereogram;

[0036] Figure 2c for Figure 2a Another perspective stereogram of;

[0037] Figure 3 yes Figure 1 A cross-sectional view of

[0038] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0039] Figure 5 It is a schematic diagram of the structure after the valve and flange are assembled in an embodiment of the present invention;

[0040] Figure 6 is an exploded view of a valve and a flange in an embodiment of the present invention;

[0041] Figure 7 It is a process diagram of fusion welding between flange and liner bag in an embodiment of the present invention.

[0042] Description of reference numerals:

[0043] 1. Flange; 11. Joint line; 12. Identification part; 13. Main stress point of flange; 14. First connecting ring; 141. Slot; 15. Second connecting ring; 2. Lining bag; 21. Main stress point of lining bag; 23. Lining bag discharge port; 22. Mark; 3. Box; 31. Inner wall; 32. Valve; 321. Connecting pipe; 33. Box discharge port; 4. Casting; 41. Gate; 42. Casting point. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can be implemented.

[0045] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0046] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, ie, should be interpreted as "including, but not limited to."

[0047] The following will be described in detail with reference to the accompanying drawings to provide a clearer understanding of the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0048] References throughout the specification to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0049] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0050] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0051] The following describes an embodiment of the flange 1 of the present invention with reference to the accompanying drawings. Figures 2a to 2c As shown, the flange 1 has at least one joining line 11, and the flange 1 has a structural weak area and a general area excluding the structural weak area. At the same time, an identification portion 12 is provided in any one of the structural weak area and the general area.

[0052] Since the liner bag 2 is often damaged for no reason, the inventor has found through repeated observations and experiments that the reason why the liner bag 2 leaks is because the flange 1 connected to the liner bag 2 has cracks. The inventor has consulted the materials many times and found that the reason why the flange 1 is prone to cracks is that the flange 1 is prone to cracks during the production process, such as during the casting process. Figure 2b As shown, the flange has a bonding line formed during casting, and the structural weak area is the area with the bonding line. Figure 2a to Figure 2c As shown, a flange 1 is casted by a casting 4, which has a gate 41 and three pouring points 42. The molten metal liquid enters the casting 4 from the gate 41 and then comes out from the three pouring points 42 to form a flange 1. A bonding line 11 is formed between two pouring points 42, so there are three bonding lines 11. When there are fewer pouring points 42, there are also fewer bonding lines 11, but the flange 1 will have at least one bonding line 11. The structure at the bonding line 11 is weak, so when the bonding line 11 is at the main stress point of the flange 1, it is easy to cause the bonding line 11 of the flange 1 to be torn, and finally cause the flange 1 to leak. This special directional positioning is located in the corresponding direction of the glue inlet point or can clearly distinguish the position of the bonding line 11.

[0053] In order to obtain the main force point of flange 1, the inventors repeatedly observed and experimented and found that Figure 1 , Figure 3 and Figure 4 As shown, when the liner bag 2 with the flange 1 is placed in the box body 3 of the container, due to the obstruction of the flange 1, part of the liner bag 2 above the flange 1 cannot be completely fitted with the inner wall 31 of the box body 3. During the transportation of the container, the solution in the liner bag 2 keeps colliding around. In other parts of the liner bag 2, since the liner bag 2 is completely fitted with the inner wall 31 of the box body 3, the impact force of the solution is borne by the inner wall 31 of the box body 3, and no damage is caused to the liner bag 2 and the flange 1. At the top of the flange 1, since the liner bag 2 is not completely fitted with the inner wall 31 of the box body 3, the impact force of the solution is shared by the liner bag 2 and the flange 1. Therefore, after the liner bag 2 is placed in the box body 3, the top of the flange 1 is the main stress point of the flange 1, and the part where the liner bag 2 and the main stress point of the flange 1 overlap is also the main stress point of the liner bag 2. Therefore, it requires creative labor for the inventor to know the cause of the damage to the flange 1 and to obtain the main stress point of the flange 1.

[0054] Through the above analysis, it is not difficult to find that since the identification portion 12 is provided on the flange 1, and the identification portion 12 is located in a structurally weak area with a joining line 11, or in a common area without a joining line 11, when the flange 1 is welded to the discharge port of the liner bag 2, the identification portion 12 can be used to make the main force point of the flange 1 avoid the joining line 11, so that the risk of the flange 1 being torn can be reduced, thereby improving the practicality of the container. Specifically, when the identification portion 12 is located in a structurally weak area, the welding staff only needs to avoid the main force point from the identification portion 12. Generally speaking, due to the particularity of casting molding, when there are multiple joining lines 11, each joining line 11 is generally evenly distributed around the center of the flange 1, and sometimes, there may be only one joining line 11 with an identification portion 12. Therefore, when welding, the main force point is generally set within a 20-degree angle on both sides of the identification portion 12, so that the main force point will not overlap with other joining lines 11. When the identification portion 12 is located in the general area, it is only necessary to arrange the main force bearing point to coincide with the identification portion 12 .

[0055] Of course, in some embodiments, the structurally weak area on the flange is not necessarily an area having a bonding line, but may also be a structurally weak area caused by other means, as long as it does not depart from the scope of the present invention.

[0056] In addition, when the identification portion 12 is set in the structural weak area, a first mark 22 can also be set in the general area. The identification portion 12 is different from the first mark 22. Since the identification portion 12 and the first mark 22 are different from each other, the welding staff can distinguish where there is a joining line 11 and where there is no joining line 11 through the identification portion 12 and the first mark 22, thereby improving the welding efficiency. In addition, similarly, when the identification portion 12 is set in the general area, the second mark 22 is set in the structural weak area, and the second mark 22 is different from the identification portion 12.

[0057] Of course, some flanges 1 may have multiple joint lines 11, for example Figure 2b As shown, the flange 1 has three joining lines 11. In some embodiments, an identification portion 12 may be provided at each joining line 11, so that after all the identification lines are marked 22, the welding staff can more quickly identify the position of the joining line 11.

[0058] In addition, there are multiple structural weak areas, the identification part is set in the common area, each structural weak area is evenly distributed around the center of the flange, and the identification part is set at the center position between two adjacent structural weak areas.

[0059] In addition, the above-mentioned identification parts 12 can be marks 22 pasted on the flange 1, or can be paint sprayed on the flange 1. In this embodiment, Figure 2b and Figure 6 As shown, the identification portion 12 can also be a small cutout on the flange 1. Because the factory environment is generally poor, the pasted mark 22 or the sprayed paint is easy to fall off in the harsh factory environment, while the small cutout on the flange 1 will not be destroyed. In this embodiment, as shown in FIG. Figure 2b As shown, the identification portion 12 is not arranged at the joining line 11, but is arranged in the middle of the two joining lines 11. The purpose is to facilitate orientation when welding to the liquid bag, and also to orient when assembling the valve 32. In this way, the position of the joining direction can be fixed, and the joining line 11 is located on both sides of the top of the box valve 32 to prevent the joining line 11 from being subjected to excessive force.

[0060] Furthermore, the first mark 22 and the second mark 22 may be marks 22 pasted on the flange 1, or may be paint sprayed on the flange 1, or may be small incisions opened on the flange 1, as long as they are distinguishable from the marks 22.

[0061] In addition, if Figures 2a to 2c As shown Figure 5 and Figure 6 As shown, specifically, the flange includes: a first connecting ring 14 and a second connecting ring 15, the outer surface of the first connecting ring 14 has a buckle portion, the second connecting ring 15 is coaxially fixedly connected with the first connecting ring 14, wherein the identification portion is located on the first connecting ring 14. The first connecting ring 14 can be connected to other connecting parts such as flanges or valves through the buckle portion thereon. The second connecting ring 15 is connected to the liner bag 2.

[0062] A second embodiment of the present invention relates to a liner bag assembly, such as Figure 7 As shown, the liner bag assembly includes a flange 1 and a liner bag 2, wherein a discharge port of the liner bag 2 is provided on the liner bag 2, and the peripheral portion of the liner bag 2 located at the discharge port of the liner bag 2 is fixedly connected to the peripheral portion of the flange 1, generally welded together, such as fusion welding, and the main stress point of the liner bag 2 is set to avoid the joint line 11 of the flange 1 through the identification portion 12. It has been explained in the first embodiment that the main stress point of the liner bag 2 is the portion located at the top of the flange 1 when the liner bag assembly is placed in the box body 3 of the container, which is the main stress point of the liner bag 2. The main stress point of the liner bag 2 is set to avoid the joint line 11, that is, the main stress point of the liner bag 2 does not coincide with the joint line 11 of the flange 1. Generally speaking, the liner bag can be a plastic bag for liquid.

[0063] Specifically, the lining bag 2 is coaxially fixedly connected to the second connecting ring 15 of the flange 1. Since the identification portion 12 is located on the first connecting ring 14, the lining bag 2 will not cover the identification portion 12 during the connection process between the lining bag 2 and the second connecting ring 15, resulting in the position of the identification portion 12 being unclear.

[0064] In addition, a mark 22 is provided around the discharge port of the lining bag 2. The mark 22 is located at the main stress point of the lining bag 2. Through the mark 22 on the lining bag 2 and the identification part 12 on the flange 1, the main stress point of the lining bag 2 and the joining line 11 of the flange 1 can be identified so that the two do not overlap.

[0065] In addition, the mark 22 set at the main stress point of the lining bag 2 can be a mark 22 pasted on the lining bag 2, or a paint sprayed on the main stress point of the lining bag 2, for example, a mark 22 is marked on the main stress point of the lining bag 2 with a marker.

[0066] In addition, the present invention also provides a container, such as Figure 1 As shown, the container includes: a box body 3 and a valve 32, and a liner bag assembly in the second embodiment, specifically, as Figure 1 As shown, the box body 3 is provided with a discharge port of the box body 3, and the valve 32 is arranged at the discharge port of the box body 3, which can open or close the discharge port of the box body 3, and the liner bag assembly is arranged in the box body 3, and the flange 1 is fixedly connected and communicated with the valve 32. Specifically, the first connecting ring 14 of the flange 1 is fixedly connected with the valve 32, and the flange has a buckle part, and the valve also has a snap-fit ​​part that cooperates with the buckle part of the flange, and the flange and the valve can be connected together through the cooperation of the buckle part and the snap-fit ​​part. Of course, the valve and the flange can also be connected by screws or bolts, or by other means. When the valve 32 is opened, the liquid in the liner bag 2 can be discharged through the valve 32, and when the valve 32 is closed, the entire container is in a closed state.

[0067] Specifically, Figure 5 and Figure 6 As shown, the valve 32 has a connecting pipe 321, which is coaxially fixedly connected to the first connecting ring 14 of the flange 1, and the snap-fitting part is located on the connecting pipe 321. The snap-fitting part on the flange 1 is a snap-fitting groove 141 arranged on the inner side of the first connecting ring 14, and the snap-fitting part is a convex block arranged on the outer ring surface of the connecting pipe 321, and the convex block can be elastically snapped into the snap-fitting groove 141, so that the flange 1 can be snap-fitted and installed together with the valve 32. Of course, there can be multiple snap-fitting parts, each snap-fitting part is arranged around the axis of the first connecting ring 14, and the corresponding snap-fitting parts are also multiple and connected one by one with each snap-fitting part. A sealing ring or a winding sealing strip can also be installed between the flange 1 and the valve 32 as needed.

[0068] The third embodiment of the present invention is a welding method for a liner bag assembly, and the specific welding method is as follows:

[0069] The main stress point at the discharge port of the liner bag 2 is obtained, that is, the main stress point of the liner bag 2 explained in the first embodiment, and the flange 1 in the first embodiment is used. Through the identification part 12 on the flange 1, the joint line 11 of the flange 1 is set inside the main stress bag of the liner bag 2, and finally the liner bag 2 is located at the peripheral part of the discharge port of the liner bag 2 and connected to the flange 1 by fusion welding, and the welding of the liner bag assembly is completed.

[0070] Preferred embodiments of the present invention have been described above in detail, but it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide further embodiments.

[0071] These and other changes can be made to the embodiments in light of the above detailed description.In general, in the claims, the terms used should not be considered limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which these claims are entitled.

[0072] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A liner bag assembly, It is characterized in that include: Flange, lining bag; The flange has a structurally weak area and a general area excluding the structurally weak area, and any one of the structurally weak area and the general area is provided with an identification portion; The lining bag has a lining bag discharge port, and the lining bag is fixedly connected to the flange at a peripheral portion of the lining bag discharge port; and through the identification portion, the main stress point of the lining bag is arranged to avoid the structural weak area of ​​the flange.

2. The liner bag assembly according to claim 1, It is characterized in that The structural weak area is provided with the identification part, and the common area is provided with a first marking member, and the first marking member is different from the identification part; Alternatively, the common area is provided with the identification portion, and the structurally weak area is provided with a second marking member, and the second marking member is different from the identification portion.

3. The liner bag assembly according to claim 1, It is characterized in that There are multiple structural weak areas, and each structural weak area is provided with one identification part; Alternatively, there are multiple structural weak areas, the identification portion is arranged in the common area, each of the structural weak areas is evenly distributed around the center of the flange, and the identification portion is arranged at a central position between two adjacent structural weak areas.

4. The liner bag assembly according to claim 1, It is characterized in that The structurally weak area and the common area are arranged along the circumferential direction of the flange.

5. The liner bag assembly according to claim 1, It is characterized in that The flange is cast and has a bonding line formed during the casting process. The structural weak area is the area having the bonding line.

6. The liner bag assembly according to claim 1, It is characterized in that The identification portion is a combination of any one or more of an adhesive mark, a paint sprayed on the flange, a cutout opened on the flange, and a protrusion extending outward from the flange surface.

7. The liner bag assembly according to claim 1, It is characterized in that The flange comprises: A first connecting ring, wherein the outer surface of the first connecting ring has a buckle portion; a second connecting ring, the second connecting ring being coaxially fixedly connected to the first connecting ring; Wherein, the identification portion is located on the first connecting ring.

8. The liner bag assembly according to claim 1, It is characterized in that The peripheral part is provided with a mark, and the mark is located at the main force bearing point.

9. The liner bag assembly according to claim 8, It is characterized in that The mark can be a sticky mark or a paint sprayed on the main force bearing point.

10. A container, It is characterized in that The container comprises: A box body, wherein a box body discharge port is provided on the box body; a valve operable to open or close the tank discharge port; The liner bag assembly according to any one of claims 1 to 9, wherein the liner bag assembly is disposed in the box body, and the flange is fixedly connected and communicated with the valve.

11. A method for welding a liner bag assembly, It is characterized in that The specific steps are as follows: Obtain the main force point at the liner bag discharge port of the liner bag; Using the liner bag assembly according to any one of claims 1 to 9, the structural weak area of ​​the flange is arranged away from the main force bearing point through the identification portion; The peripheral portion of the liner bag located at the liner bag discharge port is connected to the flange by fusion welding.

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