Barrel cover structure capable of preventing objects contained in steel barrel from being polluted and steel barrel

Abstract

The utility model provides a barrel cover structure for preventing objects contained in a steel barrel from being polluted and the steel barrel. The barrel cover structure comprises a connecting shaft, a fixing disc and a barrel plug, wherein the fixing disc and the barrel plug are detachably connected with the connecting shaft; the first connecting part of the connecting shaft is connected with the steel drum top cover through a first connecting structure; the second connecting part of the connecting shaft is connected with the lining barrel cover through a second connecting structure; the barrel plug is connected with the first connecting part of the connecting shaft. The barrel cover structure has the advantages that the connecting piece is of a split type structure and comprises the connecting piece body and the fixing disc, the fixing disc is used for being matched with the connecting piece body to firmly lock the lining barrel between the connecting piece body and the fixing disc, and when the barrel plug is screwed down, even if the connecting piece rotates, the connecting piece can not rotate. And the connection between the steel drum and the lining drum can be locked by the fixed disc which is additionally arranged inside, so that the connection between the steel drum and the lining drum at the drum opening connecting part is not loosened.

Description

Technical Field

[0001] This utility model belongs to the field of packaging technology, and in particular relates to a barrel lid structure and a steel barrel that prevents contamination of the contents of the barrel. Background Technology

[0002] Existing steel drums are usually lined with plastic inner drums. The contents to be transported are placed in the inner drum to better seal the contents and reduce the occurrence of contamination.

[0003] Currently, the connector used to fix the inner liner barrel to the steel barrel is an integrated structure. The part of the connector that mates with the opening of the steel barrel is connected to the barrel cover flange through an external thread structure and is directly installed inside the barrel cover. This allows the barrel cover / inner liner membrane of the inner liner barrel to be sandwiched between the connector and the inner wall of the steel barrel cover. Then, the external thread structure of the barrel plug is used to mate with the internal thread structure of the inner ring of the connector to tighten the barrel plug in the inner ring of the connector, thus achieving a seal.

[0004] However, the above structure has the following technical problems: if too much force is used when tightening the barrel stopper, the barrel stopper or the sealing gasket on the barrel stopper will squeeze and rub against the connecting parts, causing the connecting parts to rotate, resulting in the inner lining barrel and the steel barrel connection at the barrel opening joint becoming loose, posing a risk of leakage / contamination. Utility Model Content

[0005] In view of this, the present invention aims to provide a lid structure and a steel drum that prevent contamination of the contents of the steel drum, so as to solve at least one of the problems in the prior art.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A barrel lid structure for preventing contamination of the contents of a steel drum includes a connecting shaft and a fixing disc and a barrel plug that are detachably connected to the connecting shaft.

[0008] The first connecting part of the connecting shaft is connected to the steel drum through the first connecting structure. Preferably, the first connecting part of the connecting shaft is connected to the top cover of the steel drum through the first connecting structure.

[0009] The second connecting part of the connecting shaft is connected to the inner liner barrel through a second connecting structure. Preferably, the second connecting part of the connecting shaft is connected to the inner liner barrel cover through a second connecting structure.

[0010] The barrel plug is connected to the first connecting part of the connecting shaft.

[0011] Furthermore, the connecting shaft includes a first rotating disk, the upper end of which extends upward to form a first connecting portion, and the lower end of which extends downward to form a second connecting portion.

[0012] Furthermore, the first connecting structure includes a first external thread structure disposed on the outside of the first connecting part of the connecting shaft, and the first external thread structure mates with the internal thread structure of the opening of the steel barrel.

[0013] Furthermore, the first connecting structure includes a first internal thread structure disposed inside the first connecting part of the connecting shaft, and the barrel plug is provided with a second external thread structure, the barrel plug engaging with the first internal thread structure through the second external thread structure.

[0014] Furthermore, a sealing gasket is fitted on the barrel stopper, and the barrel stopper is connected to a connecting shaft pre-installed at the opening of the steel barrel. The top of the barrel stopper is provided with a disassembly groove that is easy to disassemble and cooperates with a disassembly tool. Preferably, the barrel stopper is installed on the outside of the steel barrel cover.

[0015] Furthermore, the second connection structure includes a third external thread structure disposed on the outside of the second connection part of the connecting shaft, and the fixing plate is provided with a second internal thread structure, the second internal thread structure cooperating with the third external thread structure;

[0016] The inner liner top cover is clamped between the fixed plate and the first rotating plate.

[0017] Furthermore, the fixed disk includes a second rotating disk, and a second internal thread structure is disposed on the inner wall of the second rotating disk.

[0018] Furthermore, the outer edges of the first and second rotating disks are polygonal structures that facilitate twisting.

[0019] Furthermore, the steel drum has at least one opening, which includes at least one of a main inlet and a vent.

[0020] Furthermore, this solution discloses a steel drum, which has at least one opening and at least one lid structure at the opening.

[0021] Compared with the prior art, the barrel lid structure and the steel barrel of this utility model that prevent contamination of the contents of the steel barrel have the following beneficial effects:

[0022] This utility model discloses a barrel lid structure and a steel barrel that prevents contamination of the contents of a steel barrel. The connector is a split structure, consisting of a connector body and a fixing plate. The fixing plate, in conjunction with the connector body, firmly locks the inner liner barrel between the two. Even if the connector rotates when the barrel stopper is tightened, the newly added fixing plate inside can still lock the connection with the inner liner barrel, ensuring that the connection between the steel barrel and the inner liner barrel at the barrel opening is not loose. At the same time, this barrel lid structure can prevent contamination caused by the contents of the steel barrel and overcome the environmental problems related to the disposal of steel barrels. It can prevent the contents from being contaminated and is beneficial to environmental protection. Attached Figure Description

[0023] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0024] Figure 1 This is a three-dimensional schematic diagram of the overall structure including a steel drum and an inner liner drum as described in an embodiment of the present utility model;

[0025] Figure 2 This is a schematic side view of the overall structure including a steel drum and an inner liner drum as described in an embodiment of the present utility model;

[0026] Figure 3 This is a three-dimensional schematic diagram of the overall structure of the present utility model, excluding the steel drum and the inner lining drum;

[0027] Figure 4 This is a three-dimensional bottom view of the overall structure of the present invention, excluding the steel drum and the inner lining drum, according to an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Steel drum; 2-Inner liner drum; 3-Connecting shaft; 31-First rotating disc; 32-First connecting part; 33-Second connecting part; 34-First external thread structure; 35-First internal thread structure; 36-Third external thread structure; 4-Drum plug; 41-Sealing gasket; 42-Disassembly groove; 43-Second external thread structure; 5-Fixing disc; 51-Second rotating disc; 52-Second internal thread structure. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] In order to improve the sealing and prevent the contents from being contaminated during storage and transportation, existing steel drums are usually lined with a plastic inner drum, and the contents are stored in the inner drum.

[0033] The inner liner barrel typically includes an inner liner barrel body and an inner liner barrel lid. The top opening of the inner liner barrel body has an outward-facing flange structure. The inner liner barrel lid is pre-fixed to the barrel lid of the steel barrel through a connecting structure (i.e., the barrel lid structure disclosed in this solution). During assembly, the inner liner barrel lid and the steel barrel lid together press the top opening of the inner liner barrel body with the flange structure along with the opening edge of the steel barrel to achieve a double-layer seal.

[0034] In response to the problems existing in the prior art, this solution proposes a new type of barrel lid structure to avoid contamination of the contents of the steel barrel. The connector is a split structure, consisting of a connector body and a fixing plate. The fixing plate is used in conjunction with the connector body to firmly lock the inner barrel between the two. Even if the connector rotates when the barrel stopper is tightened, the newly added fixing plate inside can still lock the connection with the inner barrel, ensuring that the connection between the steel barrel and the inner barrel at the barrel opening does not loosen.

[0035] like Figures 1 to 4 As shown, the specific structure of this scheme is as follows:

[0036] The main structure includes a connecting shaft and a fixed disc and a barrel plug that are detachably connected to the connecting shaft;

[0037] The first connecting part of the connecting shaft is connected to the steel drum through the first connecting structure. Preferably, the first connecting part of the connecting shaft is connected to the top cover of the steel drum through the first connecting structure.

[0038] The second connecting part of the connecting shaft is connected to the inner liner barrel through a second connecting structure. Preferably, the second connecting part of the connecting shaft is connected to the inner liner barrel cover through a second connecting structure.

[0039] The barrel plug is connected to the first connecting part of the connecting shaft.

[0040] The connecting shaft includes a first rotating disk, the upper end of which extends upward to form a first connecting part, and the lower end of which extends downward to form a second connecting part.

[0041] The first connecting structure includes a first external thread structure disposed on the outside of the first connecting part of the connecting shaft, which mates with the internal thread structure of the opening of the steel barrel.

[0042] The first connecting structure includes a first internal thread structure disposed inside the first connecting part of the connecting shaft, and a second external thread structure disposed on the barrel plug, the barrel plug being engaged with the first internal thread structure through the second external thread structure.

[0043] A sealing gasket is fitted on the barrel stopper, and the barrel stopper is connected to a connecting shaft pre-installed at the opening of the steel barrel. The top of the barrel stopper is provided with a disassembly groove that is easy to disassemble and can be used with a disassembly tool. Preferably, the barrel stopper is installed on the outside of the top cover of the steel barrel.

[0044] The second connection structure includes a third external thread structure disposed on the outside of the second connection part of the connecting shaft, and a second internal thread structure disposed on the fixed plate, the second internal thread structure cooperating with the third external thread structure;

[0045] The inner liner top cover is clamped between the fixed plate and the first rotating plate.

[0046] The fixed disk includes a second rotating disk, and a second internal thread structure is disposed on the inner wall of the second rotating disk.

[0047] The outer edges of the first and second rotating disks are polygonal structures that facilitate twisting.

[0048] The steel drum has at least one opening, including at least one of a main inlet and a vent. It should be noted that existing steel drums have multiple openings, which can be vents, inlets, or outlets. The drum cover structure mentioned in this solution can be configured at all openings according to actual needs, or at some openings. When only some openings are configured, the remaining openings can continue to use the opening structure in the background technology or other existing drum cover structures for sealing.

[0049] This solution also protects a steel drum structure, wherein the steel drum has at least one opening, and at least one opening uses the lid structure mentioned in this solution.

[0050] It should be noted that, in order to facilitate the demonstration / understanding of the connection / positional relationship between the lid structure and the steel drum and inner lining drum mentioned in this solution, this solution... Figure 1 and Figure 2 The lieutenant general indicated the positions of the steel drum and the inner lining drum. Figure 1 and Figure 2 The terms "steel drum" and "lined drum" in this document can refer to the lid of the steel drum, the lid of the lined drum, the body of the steel drum, and the body of the lined drum. The lid structure mentioned in this solution is mostly installed on the lid of the steel drum or the lined drum, but it can also be installed on the body of the drum depending on actual needs. The name of this solution does not limit the scope of application, use, or purpose of the products in this solution.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drum cover structure for avoiding contamination of the contents of a steel drum, characterized in that: it comprises a connecting shaft, a fixing disc and a bung which are detachably connected to the connecting shaft; a first connecting portion of the connecting shaft is connected to the steel drum by a first connecting structure; a second connecting portion of the connecting shaft is connected to the inner liner drum by a second connecting structure; the bung is connected to the first connecting portion of the connecting shaft; the connecting shaft comprises a first rotating disc, the upper end of the first rotating disc extends upward to form the first connecting portion, and the lower end of the first rotating disc extends downward to form the second connecting portion; the first connecting structure comprises a first external thread structure arranged on the outer side of the first connecting portion of the connecting shaft, and the first external thread structure cooperates with the internal thread structure of the opening of the steel drum; the first connecting structure comprises a first internal thread structure arranged on the inner side of the first connecting portion of the connecting shaft, and the bung is provided with a second external thread structure, and the bung cooperates with the first internal thread structure through the second external thread structure; the second connecting structure comprises a third external thread structure arranged on the outer side of the second connecting portion of the connecting shaft, and the fixing disc is provided with a second internal thread structure which cooperates with the third external thread structure; the top cover of the inner liner drum is clamped between the fixing disc and the first rotating disc. A sealing gasket is sleeved on the bung, the bung is connected to the connecting shaft which is pre-installed on the opening of the steel drum, and the top of the bung is provided with a dismounting groove which is convenient for dismounting and cooperates with a dismounting tool. The fixing disc comprises a second rotating disc, and the second internal thread structure is arranged on the inner wall of the second rotating disc. The outer wall edges of the first rotating disc and the second rotating disc are polygonal structures which are convenient for screwing. The opening of the steel drum is provided with at least one opening, and the opening comprises at least one of a main inlet and a vent. The opening of the steel drum is provided with at least one opening, and the opening comprises at least one of a main inlet and a vent. The opening of the steel drum is provided with at least one opening, and the opening comprises at least one of a main inlet and a vent. ​ ​ ​ 2. The drum cover structure for preventing contamination of the contents of a steel drum according to claim 1, wherein: ​ 3. The drum cover structure for preventing contamination of the contents of a steel drum according to claim 1, wherein: ​ 4. The drum cover structure according to claim 3, wherein: ​ 5. The drum cover structure according to claim 3, wherein: ​ 6. A steel drum provided with not less than one opening, characterized in that: ​

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