Rust-proof bag with sealing structure

Abstract

The utility model discloses a kind of rustproof bags with sealing structure applied to rustproof bag field, by being provided with sealing clamping strip and sealing clamping seat at rustproof bag mouth, the clamping cooperation of sealing clamping strip and sealing clamping seat is utilized to set, it is convenient for personnel to manually and quickly seal operation to rustproof bag body, and the cooperation of multiple sealing units is set, the sealing of rustproof bag mouth can be better, it is not easy to open accidentally and leak, in addition, by the cooperation of limiting protrusion and limiting sliding slot, make that press-fit clamping block is slidably installed in the mouth outside of rustproof bag body, when press-fit clamping block slides along the mouth of rustproof bag body, sealing clamping strip is extruded into the inside of sealing clamping seat, realize the quick and accurate clamping cooperation between sealing clamping strip and sealing clamping seat;Manual exhaust structure is set in the side of rustproof bag, and personnel is conveniently and quickly exhaust operation to sealed rustproof bag body, need not help other tools, use more conveniently and reliably.

Description

Technical Field

[0001] This utility model relates to the field of rust-proof bags, and in particular to a rust-proof bag with a self-sealing structure. Background Technology

[0002] Vapor phase corrosion inhibitor bags combine modern film technology with vapor phase induction technology, using PE resin and VCI corrosion inhibitors blended, co-extruded, and blow-molded through a special process. The principle lies in the rust-preventing gaseous factors generated by the volatilization of the VCI corrosion inhibitor within the vapor phase corrosion inhibitor film. When items requiring rust prevention are placed inside and sealed, a relatively closed environment is created inside the bag. The rust-preventing particles within the bag vaporize into gas, and these gaseous factors diffuse and penetrate to the surface of the items, forming a monomolecular-thick rust-preventing protective film. This film isolates the surface of the items from various factors that induce rust, thus achieving a rust-preventing effect.

[0003] Vapor phase corrosion inhibitor bags are generally used for packaging metal products. However, when the items to be protected against rust are placed in the vapor phase corrosion inhibitor bag, the surrounding air will mix in. Especially for the long-term storage of some precision metal products and the protection against rust during sea transport, the humid atmosphere may still gradually cause some corrosion to the structure of the metal products, so as not to completely achieve the desired rust prevention effect.

[0004] To address the aforementioned issues, a search revealed, for example, a vapor phase corrosion inhibitor bag disclosed in patent publication number CN222573013U. This bag utilizes an exhaust structure and a corresponding sealing cap to control the opening and closing of the airflow channel. This allows air to escape from the bag after it is sealed. A triple-sealing structure is formed beneath the sealing cap, centered around the exhaust vent, ensuring excellent airtightness within the bag after exhaust and preventing the intrusion of outside air through the vent and the leakage of the corrosion inhibitor gas. Items placed inside the vapor phase corrosion inhibitor bag can be held and fixed in the central area of ​​the bag by a flexible padding layer. Airflow is drawn in through the air inlet located on the side of the airflow channel platform and directed towards the open area inside the bag, allowing for more efficient exhaust of the gas.

[0005] Based on the above search and combined with existing technology, it was found that most of the rust-proof bags disclosed above are sealed by heat sealing, which is inconvenient to use; and after sealing, they need to be vented by an external air extraction device, which is quite troublesome. Utility Model Content

[0006] The core of this invention lies in solving the problem of inconvenient sealing operations in existing technologies through a multi-sealing structure. It also features a built-in manual venting mechanism for easier venting.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A rust-proof bag with a self-sealing structure includes a rust-proof bag body, and a multi-seal structure is provided at the bag opening of the rust-proof bag body. The multi-seal structure includes multiple sealing units, and the multiple sealing units are equidistantly arranged at the bag opening of the rust-proof bag body.

[0009] The sealing unit includes a sealing strip and a sealing seat. The sealing strip and the sealing seat are respectively fixed on the inner surfaces of both sides of the bag opening of the rust-proof bag body, and the sealing strip and the sealing seat are engaged and matched.

[0010] A manual venting structure is provided on one side of the rust-proof bag body. The manual venting structure includes a fixed seat, a cylinder, a piston block, and a piston rod. The cylinder is fixed to the rust-proof bag body through the fixed seat. The piston block slides against the inner surface of the cylinder. The piston rod is fixed to the piston block and extends to the outside of the cylinder. A one-way valve structure is installed on both the fixed seat and the piston block.

[0011] The combination of multiple sealing units allows for quick and easy manual sealing of the rust-proof bag. The manual venting structure also allows for quick venting of the sealed rust-proof bag without the need for other tools, making it more convenient and reliable to use.

[0012] Furthermore, a pressing block is slidably installed on the outer side of the rust-proof bag body along the bag opening. When the pressing block slides along the bag opening of the rust-proof bag body, it squeezes the sealing strip into the inner side of the sealing seat.

[0013] Furthermore, the outer surfaces of both sides of the bag opening of the rust-proof bag body are fixed with limit protrusions, and the inner wall of the pressing block is provided with a limit groove that matches the limit protrusions.

[0014] Furthermore, the inner surface of the limiting groove is movably fitted with balls that roll in contact with the limiting protrusion.

[0015] Furthermore, both sides of the opening edge of the rust-proof bag body are fixed with limiting blocks to limit the pressing block.

[0016] Furthermore, the one-way valve structure includes a sealing block and a tension spring. The fixed seat is provided with a first vent hole that communicates with the interior of the rust-proof bag body. The piston block is also provided with a first vent hole. The sealing block is provided with a second vent hole that is offset from the first vent hole.

[0017] The sealing blocks are all located on the side of the fixed seat and piston block near the piston rod. The fixed seat and piston block are provided with grooves that are adapted to the tension springs. The tension springs are fixed between the sealing blocks and the inner walls of the grooves.

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] (1) This solution uses multiple sealing units to facilitate manual and quick sealing of the rust-proof bag body. The manual venting structure allows personnel to quickly vent the sealed rust-proof bag body without the need for other tools, making it more convenient and reliable to use.

[0020] (2) This solution uses the combination of limiting protrusion and limiting groove to make the pressing block slide on the outside of the bag opening of the rustproof bag body. When the pressing block slides along the bag opening of the rustproof bag body, it squeezes the sealing strip into the inside of the sealing seat, so as to realize the quick and accurate locking and engagement between the sealing strip and the sealing seat. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0023] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0024] Figure 4 This is a cross-sectional view of the manual exhaust structure of this utility model.

[0025] Explanation of the labels in the diagram:

[0026] 1. Rust-proof bag body; 2. Sealing strip; 3. Sealing seat; 4. Pressing block; 401. Limiting groove; 5. Limiting protrusion; 6. Ball bearing; 7. Limiting block; 8. Manual venting structure; 801. First vent; 81. Fixing seat; 82. Cylinder; 83. Piston block; 84. Piston rod; 85. Sealing block; 8501. Second vent; 86. Tension spring. Detailed Implementation

[0027] The technical solution will now be clearly and completely described with reference to the accompanying drawings in the embodiments of this utility model.

[0028] First implementation method:

[0029] Please see Figure 1-4 A rust-proof bag with a self-sealing structure includes a rust-proof bag body 1. The rust-proof bag body 1 is made by blending and extruding PE resin and VCI rust inhibitor through a special process using existing technology. The bag opening of the rust-proof bag body 1 is provided with a multi-seal structure, which includes multiple sealing units. The multiple sealing units are equidistantly arranged at the bag opening of the rust-proof bag body 1.

[0030] Specifically, the sealing unit includes a sealing strip 2 and a sealing seat 3. Both the sealing strip 2 and the sealing seat 3 are made of elastic material, such as conventional rubber. The sealing strip 2 and the sealing seat 3 are respectively fixed to the inner surfaces of both sides of the bag opening of the rust-proof bag body 1, and the sealing strip 2 and the sealing seat 3 are engaged and matched.

[0031] To facilitate the engagement of the sealing strip 2 and the sealing seat 3, a pressing block 4 is slidably installed on the outer side of the rust-proof bag body 1 along the bag opening. Specifically, limit protrusions 5 are fixed on both sides of the outer surface of the bag opening of the rust-proof bag body 1. The inner wall of the pressing block 4 is provided with a limit groove 401 that matches the limit protrusions 5. When the pressing block 4 slides along the bag opening of the rust-proof bag body 1, it squeezes the sealing strip 2 into the inner side of the sealing seat 3.

[0032] Among them, the inner surface of the limiting slide groove 401 is movably installed with a ball 6 that rolls in contact with the limiting protrusion 5, which can reduce the resistance during the sliding process of the pressing block 4 and make the sealing operation more labor-saving.

[0033] In addition, both sides of the bag opening edge of the rust-proof bag body 1 are fixed with limiting blocks 7 to limit the pressing block 4, so that the pressing block 4 is not easy to detach from the bag opening of the rust-proof bag body 1.

[0034] Second implementation method:

[0035] like Figure 1 , Figure 2 and Figure 4 As shown, based on the first embodiment, a manual venting structure 8 is provided on one side of the rust-proof bag body 1. The manual venting structure 8 includes a fixing seat 81, a cylinder 82, a piston block 83, and a piston rod 84. The cylinder 82 is fixed to the rust-proof bag body 1 through the fixing seat 81. The piston block 83 slides against the inner surface of the cylinder 82. The piston rod 84 is fixed to the piston block 83 and extends to the outer side of the cylinder 82. A one-way valve structure is installed on both the fixing seat 81 and the piston block 83.

[0036] After the bag opening of the rust-proof bag body 1 is sealed by the multiple sealing structure, the operator manually pushes and pulls the piston rod 84. The piston rod 84, along with the piston block 83, slides back and forth along the axial direction of the cylinder 82 inside the cylinder 82. With the help of the one-way valve structure on the fixed seat 81 and the piston block 83, the air inside the rust-proof bag body 1 is gradually extracted, making the operation more convenient.

[0037] Regarding the structure of a one-way valve, specifically, as follows: Figure 4As shown, the one-way valve structure includes a sealing block 85 and a tension spring 86. The fixed seat 81 is provided with a first vent hole 801 that communicates with the interior of the rust-proof bag body 1. The piston block 83 is also provided with a first vent hole 801. The sealing block 85 is provided with a second vent hole 8501 that is offset from the first vent hole 801. The sealing block 85 is located on the side of the fixed seat 81 and the piston block 83 near the piston rod 84. The fixed seat 81 and the piston block 83 are both provided with grooves that are adapted to the tension spring 86. The tension spring 86 is fixed between the sealing block 85 and the inner wall of the groove.

[0038] Based on the above structural arrangement, when the piston rod 84 is pulled outward, the piston rod 84, along with the piston block 83, slides towards the side away from the fixed seat 81. At this time, a negative pressure is formed in the cylindrical body 82 between the piston block 83 and the fixed seat 81. The air in the rust-proof bag body 1 compresses the sealing block 85 on the fixed seat 81, causing the tension spring 86 on the fixed seat 81 to stretch. The sealing block 85 on the fixed seat 81 opens, and air enters the cylindrical body 82 between the piston block 83 and the fixed seat 81 sequentially from the first exhaust port 801 and the second exhaust port 8501. When the air pressure on both sides of the sealing block 85 is balanced, the tension spring 86, along with the sealing block 83, slides away from the fixed seat 81. 5. Reset and seal the first vent hole 801 on the fixed seat 81; when the piston rod 84 is pushed inward, the piston rod 84 slides with the piston block 83 toward the side closer to the fixed seat 81. At this time, the air in the cylinder 82 between the piston block 83 and the fixed seat 81 squeezes the sealing block 85 on the piston block 83, causing the tension spring 86 on the piston block 83 to stretch, and the sealing block 85 on the piston block 83 to open, and the air is discharged outward from the second vent hole 8501; in this way, the air in the rust-proof bag body 1 is gradually discharged. Compared with the existing rust-proof bag venting structure, this solution does not require an external air extraction device to perform the venting operation, making the operation more convenient.

[0039] The above description is merely a preferred embodiment of this utility model; it encompasses all the protection scope of this utility model. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be covered within the protection scope of this utility model.

Claims

1. A rust-proof bag with a self-sealing structure, comprising a rust-proof bag body (1), characterized in that: The rust-proof bag body (1) has a multi-seal structure at the bag opening, which includes multiple sealing units, and the multiple sealing units are equidistantly arranged at the bag opening of the rust-proof bag body (1). The sealing unit includes a sealing strip (2) and a sealing seat (3). The sealing strip (2) and the sealing seat (3) are respectively fixed on the inner surfaces of the two sides of the bag opening of the rust-proof bag body (1), and the sealing strip (2) and the sealing seat (3) are engaged and matched. A manual venting structure (8) is provided on one side of the rust-proof bag body (1). The manual venting structure (8) includes a fixed seat (81), a cylinder (82), a piston block (83), and a piston rod (84). The cylinder (82) is fixed to the rust-proof bag body (1) through the fixed seat (81). The piston block (83) slides against the inner surface of the cylinder (82). The piston rod (84) is fixed to the piston block (83) and extends to the outer side of the cylinder (82). A one-way valve structure is installed on both the fixed seat (81) and the piston block (83).

2. The rust-proof bag with a self-sealing structure according to claim 1, characterized in that: A pressing block (4) is slidably installed on the outer side of the rust-proof bag body (1) along the bag opening. When the pressing block (4) slides along the bag opening of the rust-proof bag body (1), it squeezes the sealing strip (2) into the inner side of the sealing seat (3).

3. The rust-proof bag with a self-sealing structure according to claim 2, characterized in that: The outer surfaces of both sides of the bag opening of the rust-proof bag body (1) are fixed with limiting protrusions (5), and the inner wall of the pressing block (4) is provided with a limiting groove (401) that matches the limiting protrusions (5).

4. The rust-proof bag with a self-sealing structure according to claim 3, characterized in that: The inner surface of the limiting groove (401) is movably fitted with a ball (6) that rolls in contact with the limiting protrusion (5).

5. A rust-proof bag with a self-sealing structure according to claim 2, characterized in that: The rust-proof bag body (1) has a limiting block (7) fixed on both sides of the bag opening edge to limit the pressing block (4).

6. A rust-proof bag with a self-sealing structure according to claim 1, characterized in that: The one-way valve structure includes a sealing block (85) and a tension spring (86). The fixed base (81) is provided with a first exhaust hole (801) that communicates with the interior of the rust-proof bag body (1). The piston block (83) is also provided with a first exhaust hole (801). The sealing block (85) is provided with a second exhaust hole (8501) that is offset from the first exhaust hole (801). The sealing blocks (85) are all located on the side of the fixed seat (81) and piston block (83) near the piston rod (84). The fixed seat (81) and piston block (83) are both provided with grooves that are compatible with the tension spring (86). The tension spring (86) is fixed between the sealing block (85) and the inner wall of the groove.

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