Corrosion resistant sealed metal can

Abstract

The utility model discloses a kind of corrosion-resistant sealed metal cans in the field of metal can, including metal can body, sealing mechanism and protection mechanism are set to metal can body right side;Sealing mechanism includes with the fixed connection of metal can body right end injection pipe, the multiple sets of sealing rubber pad of injection pipe inner wall from left to right setting, the sealing cover body of insertable, the thread ring of being fixed to the sealing cover body outer wall and being connected with the injection pipe right end outer wall screw thread groove screw, the limiting push ring of sealing cover body left end, the limiting pad ring and sealing cover plate of clamping;Sealing rubber pad is multiple sets of sealing members fixedly installed on injection pipe inner wall, from left to right sequentially distribution along injection pipe inner wall, to realize the step-by-step sealing of cooperation with sealing cover body, the multiple levels sealing and mechanical reinforcement of injection port can be realized by the collaborative work of sealing mechanism and protection mechanism in this corrosion-resistant sealed metal can, both ensure long-term reliable air-tight and liquid-tight performance, also facilitate repeatedly opening maintenance and improve the corrosion resistance and safety reliability of whole tank.

Description

Technical Field

[0001] This utility model relates to the field of metal cans, specifically a corrosion-resistant and airtight metal can. Background Technology

[0002] Metal cans are sealed containers made of metal materials (such as tinplate, aluminum alloy, stainless steel, etc.) through processes such as stamping, stretching, welding, or rolling. They are used for holding, storing, and transporting various solid, liquid, or gaseous substances. They are characterized by high strength, good sealing, pressure and impact resistance, and are not easily broken. Compared to glass or plastic containers, they maintain their integrity under external forces and effectively block the intrusion of light, air, moisture, and microorganisms, ensuring the safety and stability of the contents during long-term storage or transportation. Therefore, they are widely used for packaging and storing food and beverages, dairy products, edible oils, canned goods, condiments, beer, carbonated beverages, as well as chemical raw materials, paints, lubricants, compressed gases, etc., meeting various requirements such as corrosion prevention, moisture prevention, evaporation prevention, leakage prevention, and explosion prevention. Their structure generally includes a can body, a can bottom, and a can lid. Common forms include two-piece cans, three-piece cans, easy-open cans, and aerosol cans. They not only possess good mechanical properties and processing adaptability but can also be aesthetically pleasing and have their inner walls treated with anti-corrosion coatings through printing or coating, increasing product added value and service life.

[0003] Existing metal cans, when used for long-term storage or transportation of corrosive media, suffer from simple and unstable filling port seals that are prone to uneven stress distribution and susceptibility to external impacts and vibrations. This can lead to seal failure or displacement, resulting in media leakage, tank oxidation and corrosion, secondary pollution, and safety hazards. Furthermore, the lack of a protective limiting device that can be repeatedly opened to uniformly compress and reinforce the seals results in high maintenance and handling risks, short lifespan, and difficulty in ensuring sealing reliability. These seals are more prone to failure under conditions of temperature differences, pressure fluctuations, chemical corrosion, and human error, leading to frequent maintenance and replacement costs and failing to meet the requirements of long-term industrial storage. Therefore, this invention designs a corrosion-resistant, sealed metal can to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a corrosion-resistant, sealed metal can to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A corrosion-resistant sealed metal can includes a metal can body. A sealing mechanism and a protective mechanism are provided on the right side of the metal can body. The sealing mechanism includes an injection pipe fixedly connected to the right end of the metal can body, multiple sets of sealing gaskets arranged from left to right on the inner wall of the injection pipe, an insertable sealing cover, a threaded ring fixed to the outer wall of the sealing cover and threadedly connected to the threaded groove on the outer wall of the right end of the injection pipe, a limiting push ring at the left end of the sealing cover, a limiting gasket ring and a sealing cover plate that are engaged with the sealing cover. The protective mechanism includes a rubber ring fixed to the left end of the threaded ring, a limiting pressure ring on the outside of the rubber ring, a support socket fixed on the outer wall of the limiting pressure ring, a screw inserted into the support socket and threadedly connected to a limiting nut on its right end, a support rod fixed to the left end of the screw and fixed to the outer wall of the metal can body, and a sealing ring arranged inside the rubber ring and fixed to the outer wall of the injection pipe. The four sets of support socket, support rod, screw and limiting nut are distributed on the outside of the sealing ring.

[0007] Optionally, the sealing gasket is a set of sealing elements fixedly installed on the inner wall of the injection tube, distributed sequentially from left to right along the inner wall of the injection tube to achieve a step-by-step seal in conjunction with the sealing cover.

[0008] Optionally, the threaded ring is sleeved on the outer wall of the sealing cover and threadedly connected to the threaded groove on the outer wall of the right end of the injection tube. The sealing cover is fixedly connected to the injection tube through the threaded ring and compresses the sealing gasket.

[0009] Optionally, the limiting push ring is fixed to the left end of the sealing cover. The left side of the limiting push ring pushes the sealing cover plate, so that the sealing cover plate and the limiting gasket engage to achieve a secondary snap-fit ​​sealing structure inside the cover.

[0010] Optionally, a sealing ring is provided and fixed on the inner side of the rubber ring. By tightening the limiting nut, the screw applies pressure to the limiting pressure ring, thereby squeezing the rubber ring and pressing it down onto the sealing ring, thus achieving additional compression and sealing of the sealing ring on the outer wall of the injection pipe.

[0011] Optionally, a support socket is fixed to the outer wall of the limiting pressure ring, the screw is inserted into the support socket and the right end is threadedly connected to the limiting nut, and a support rod is fixed to the left end of the screw. The support rod is fixedly installed on the outer wall of the metal tank to implement force transmission and positioning constraint on the limiting pressure ring.

[0012] Optionally, the support socket, support rod, screw, and limiting nut are arranged in four groups on the outside of the sealing ring, so as to achieve uniform pressure and positioning of the limiting pressure ring and rubber ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, a sealing mechanism is provided. Through the step-by-step pressing and snapping cooperation between multiple sets of sealing gaskets arranged from left to right on the inner wall of the injection pipe and the sealing cover and sealing cover plate, a sealing structure with tight contact between the inner and outer layers is formed, thereby effectively preventing the medium from leaking out through the injection port and reducing the risk of failure of the inner sealing component due to local stress concentration.

[0015] 2. In this utility model, a protective mechanism is provided. Through the coordinated work of the limiting pressure ring, rubber ring, sealing ring, support socket, support rod, screw, and limiting nut, the mechanical pressure and positioning constraint of the seal is achieved, so that the force distribution of the seal is more uniform, the vibration resistance and loosening resistance are enhanced, and the pressure can be controlled by tightening or loosening the limiting nut when necessary, which facilitates maintenance and resetting. Attached Figure Description

[0016] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model from a planar front view;

[0018] Figure 3 This is a three-dimensional top view of the structure of this utility model;

[0019] Figure 4 This is a three-dimensional right-view structural schematic diagram of the present invention;

[0020] Figure 5 This is a top view of the structure of this utility model;

[0021] Figure 6 This is a three-dimensional sectional view of the structure of this utility model. Figure 1 ;

[0022] Figure 7 This is a three-dimensional sectional view of the structure of this utility model. Figure 2 ;

[0023] Figure 8 This utility model Figure 7 A magnified three-dimensional structural diagram of point A in the middle;

[0024] Figure 9 This is a three-dimensional sectional view of the structure of this utility model. Figure 3 ;

[0025] Figure 10 This utility model Figure 9 A magnified three-dimensional structural diagram of point B in the middle.

[0026] In the diagram: 1. Metal tank; 2. Sealing mechanism; 201. Injection pipe; 202. Sealing gasket; 203. Sealing cover; 204. Threaded ring; 205. Limiting push ring; 206. Limiting washer ring; 207. Sealing cover plate; 3. Protective mechanism; 301. Limiting pressure ring; 302. Rubber ring; 303. Sealing ring; 304. Support socket; 305. Support rod; 306. Screw; 307. Limiting nut. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-8This embodiment relates to a corrosion-resistant sealed metal can, which includes a metal can body 1. A sealing mechanism 2 and a protective mechanism 3 are provided on the right side of the metal can body 1. The sealing mechanism 2 includes an injection pipe 201 fixedly connected to the right end of the metal can body 1, multiple sets of sealing gaskets 202 arranged from left to right on the inner wall of the injection pipe 201, an insertable sealing cover 203, a threaded ring 204 fixed to the outer wall of the sealing cover 203 and threadedly connected to the threaded groove of the outer wall of the right end of the injection pipe 201, a limiting push ring 205 at the left end of the sealing cover 203, a limiting gasket ring 206 snapped with it, and a sealing cover plate 207.

[0031] The protective mechanism 3 includes a rubber ring 302 fixed to the left end of the threaded ring 204, a limiting pressure ring 301 on the outside of the rubber ring 302, a support socket 304 fixed on the outer wall of the limiting pressure ring 301, a screw 306 inserted into the support socket 304 and threaded to the limiting nut 307 on the right end, a support rod 305 fixed to the left end of the screw 306 and fixed to the outer wall of the metal tank 1, and a sealing ring 303 set inside the rubber ring 302 and fixed to the outer wall of the injection pipe 201. The four sets of support socket 304, support rod 305, screw 306 and limiting nut 307 are distributed on the outside of the sealing ring 303 to achieve uniform force and positioning constraint.

[0032] The filling tube 201 is a through component that is fixedly connected to the right end of the metal can 1. Multiple sets of sealing gaskets 202 are fixedly installed on its inner wall from left to right. Each sealing gasket 202 is arranged in sequence to achieve a step-by-step pressing and sealing effect with the sealing cover 203. The sealing gasket 202 is one of the core components of this embodiment. Its arrangement ensures that when the sealing surface contacts the sealing cover 203, it can achieve step-by-step sealing and disperse the contact stress, reducing the risk of damage caused by stress concentration at a single point.

[0033] The sealing cover 203 is a plug-in closure element. A threaded ring 204 is fixed on its outer wall. The threaded ring 204 is threadedly connected to the threaded groove on the outer wall of the right end of the injection tube 201. Tightening the threaded ring 204 can drive the sealing cover 203 to press against the inside of the injection tube 201, so that the sealing cover 203 and the sealing gasket 202 on the inner wall of the injection tube 201 are in close contact, thereby forming a primary internal seal. A limiting push ring 205 is provided at the left end of the sealing cover 203. A sealing cover plate 207 is arranged on the left side of the limiting push ring 205. A limiting gasket 206 is provided on the outside of the sealing cover plate 207. The sealing cover plate 207 and the limiting gasket 206 are in a snap-fit ​​relationship. After the sealing cover 203 is in place and pressed by the threaded ring 204, the limiting push ring 205 pushes to achieve a secondary snap-fit ​​seal, thereby forming a composite closed structure inside the cover, increasing the reliability of the seal and facilitating reset after opening.

[0034] During the loading operation, the sealing cover plate 207 is first pushed into the injection pipe 201 so that the sealing cover plate 207 is engaged and positioned with the limiting gasket ring 206. Then, the sealing cover body 203 is installed, and the threaded ring 204 is rotated until it engages with the threaded groove at the right end of the injection pipe 201 to complete the pressing, so that the sealing gasket 202 contacts the sealing cover body 203 and is compressed, forming a step-by-step sealing system.

[0035] The protective mechanism 3 serves as a mechanical reinforcement and positioning device for the sealing mechanism 2. Its components work together to achieve uniform pressure increase and vibration-resistant fixation of the sealing element. A rubber ring 302 is fixed at the left end of the threaded ring 204. The rubber ring 302 is located between the threaded ring 204 and the limiting pressure ring 301, and can play the role of buffering and sealing force transmission. A sealing rubber ring 303 is provided and fixed inside the rubber ring 302. The sealing rubber ring 303 is fixed to the outer wall of the injection tube 201, serving as an additional sealing element for the outside of the injection tube 201.

[0036] The limiting pressure ring 301 is sleeved on the outside of the rubber ring 302, and a support socket 304 is fixed on its outer wall. The support socket 304 is a guide component for inserting and positioning the screw 306. The right end of the screw 306 is threadedly connected to the limiting nut 307, and the left end of the screw 306 is fixed with a support rod 305. The support rod 305 is fixed to the outer wall of the metal tank 1 by a fixed method. The four sets of support sockets 304, support rods 305, screws 306 and limiting nuts 307 are evenly distributed around the sealing rubber ring 303 to achieve uniform pressure on the limiting pressure ring 301.

[0037] In actual operation, after the initial pressing of the sealing mechanism 2 is completed, the limiting pressure ring 301 can be pushed into the outer side of the rubber ring 302 at the left end of the threaded ring 204 and the support socket 304 can be positioned. Then, the screw 306 is inserted into each support socket 304 and each limiting nut 307 is tightened. Through the cooperation of the screw 306 and the limiting nut 307, the limiting pressure ring 301 is pressed to the left, thereby causing the limiting pressure ring 301 to squeeze the rubber ring 302, and then causing the rubber ring 302 to press down on the sealing ring 303, thereby achieving additional compression sealing of the sealing ring 303 at the outer wall of the injection pipe 201. This process can improve the sealing reliability and facilitate adjustment or loosening for maintenance when needed.

[0038] When it is necessary to open for inspection or unloading, first loosen each limit nut 307 counterclockwise to release the pressure on the limit ring 301 by the screw 306. Then rotate the threaded ring 204 counterclockwise to disengage the sealing cover 203 from the injection pipe 201. Remove the sealing cover 207 for cleaning or inspection. During maintenance, check the integrity and aging of the sealing gasket 202 and sealing ring 303 one by one. Replace or clean them if necessary to ensure sealing performance.

[0039] In this specific embodiment, multiple sets of sealing gaskets 202 inside the injection pipe 201 form a step-by-step internal seal with the sealing cover 203 and sealing cover plate 207, and controllable compression is achieved through the threaded ring 204; at the same time, the mechanical pressure and positioning constraint of the seal are achieved through the limiting pressure ring 301, rubber ring 302, sealing ring 303, four sets of support sockets 304, support rods 305, screws 306, and limiting nuts 307. The above structures work together to improve the sealing reliability and vibration and impact resistance of the injection port, and facilitate repeated opening and maintenance, making it suitable for the sealing protection needs of long-term storage or transportation of corrosive media.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrosion resistant sealed metal can comprising a metal can body (1) characterised in that: A sealing mechanism (2) and a protective mechanism (3) are provided on the right side of the metal tank (1); the sealing mechanism (2) includes an injection pipe (201) fixedly connected to the right end of the metal tank (1), multiple sets of sealing gaskets (202) arranged from left to right on the inner wall of the injection pipe (201), an insertable sealing cover (203), a threaded ring (204) fixed to the outer wall of the sealing cover (203) and threadedly connected to the threaded groove of the outer wall of the right end of the injection pipe (201), a limiting push ring (205) at the left end of the sealing cover (203), a limiting gasket ring (206) snapped with it, and a sealing cover plate (207); the protective mechanism (3) includes a sealing ring fixed to the left end of the threaded ring (204). The rubber ring (302) at the end, the limiting pressure ring (301) on the outside of the rubber ring (302), the support socket (304) fixed on the outer wall of the limiting pressure ring (301), the screw (306) inserted into the support socket (304) and the right end threadedly connected to the limiting nut (307), the support rod (305) fixed on the left end of the screw (306) and fixed to the outer wall of the metal tank (1), and the sealing ring (303) set on the inner side of the rubber ring (302) and fixed to the outer wall of the injection pipe (201), the four sets of the support socket (304), the support rod (305), the screw (306) and the limiting nut (307) are distributed on the outside of the sealing ring (303).

2. The corrosion-resistant sealed metal can according to claim 1, characterized in that: The sealing gasket (202) consists of multiple sets of sealing components fixedly installed on the inner wall of the injection tube (201), distributed sequentially from left to right along the inner wall of the injection tube (201) to achieve step-by-step sealing in conjunction with the sealing cover (203).

3. The corrosion-resistant sealed metal can according to claim 1, characterized in that: The threaded ring (204) is sleeved on the outer wall of the sealing cover (203) and threadedly connected to the threaded groove on the outer wall of the right end of the injection pipe (201). The sealing cover (203) is fixedly connected to the injection pipe (201) through the threaded ring (204) and achieves the pressing of the sealing gasket (202).

4. A corrosion-resistant sealed metal can according to claim 1, characterized in that: The limiting push ring (205) is fixed to the left end of the sealing cover (203). The left side of the limiting push ring (205) pushes the sealing cover plate (207) so that the sealing cover plate (207) and the limiting gasket ring (206) are engaged to realize the secondary engagement sealing structure inside the cover.

5. A corrosion-resistant sealed metal can according to claim 1, characterized in that: A sealing ring (303) is provided and fixed on the inner side of the rubber ring (302). By tightening the limiting nut (307), the screw (306) applies pressure to the limiting pressure ring (301), thereby squeezing the rubber ring (302) and pressing the sealing ring (303) down, so as to achieve additional compression and sealing of the sealing ring (303) on the outer wall of the injection pipe (201).

6. A corrosion-resistant sealed metal can according to claim 1, characterized in that: The outer wall of the limiting pressure ring (301) is fixed with a support socket (304), the screw (306) is inserted into the support socket (304) and the right end is threadedly connected to the limiting nut (307), the left end of the screw (306) is fixed with a support rod (305), and the support rod (305) is fixedly installed on the outer wall of the metal tank (1) to implement force transmission and positioning constraint on the limiting pressure ring (301).

7. A corrosion-resistant sealed metal can according to claim 1, characterized in that: The support socket (304), support rod (305), screw (306) and limiting nut (307) are distributed in four groups on the outside of the sealing ring (303), and are arranged in groups to achieve uniform pressure and positioning of the limiting pressure ring (301) and rubber ring (302).

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