A sealed tank capable of charging and discharging inert gas

Abstract

The utility model relates to material storage container technical field, especially a kind of inert gas's sealed tank of filling and discharging, including tank body, sealing cover, set in the air inlet and exhaust component of sealing cover, the sealing member and mechanical pressure mechanism of setting between sealing cover and tank body opening end surface are included. Mechanical pressure mechanism is constituted by upper pressure gasket, lower pressure gasket and locking piece, and upper and lower pressure gasket are respectively set in sealing cover and tank body side portion, and all are equipped with protruding sheet with through-hole, locking piece passes through the through-hole and is through screwing or buckling operation, drives upper and lower pressure gasket to approach each other, to compress sealing cover to realize sealing. The utility model provides a kind of sealed tank with simple structure, low cost and can effectively establish and maintain inert gas environment in tank.

Description

Technical Field

[0001] This utility model relates to the field of material storage container technology, and in particular to a sealed container that can be filled with inert gas. Background Technology

[0002] In actual production and scientific research experiments, highly active raw materials with high specific surface area, such as porous carbon powder and nano-silicon powder, will often undergo oxidation reactions with oxygen in the air or absorb moisture from the air if they are left to air at will. This can lead to deterioration of the raw materials or intermediate products, loss of chemical activity, or the introduction of unstable factors in subsequent experiments.

[0003] Currently, there are two main solutions on the market: one is low-end food-grade airtight containers, which are mostly made of glass or plastic and achieve basic sealing through sealing gaskets. However, these containers lack air inlets and outlets, making it impossible to replace residual air with inert gases inside the container. Therefore, when storing highly active substances for extended periods, there is still a risk of oxidation and moisture absorption. The other type is high-end pressure-sealed containers, typically used for long-term storage of laboratory samples. These are mostly made of high-strength stainless steel and possess high-pressure sealing capabilities. However, these containers are expensive, have a large internal space and are heavy, making them unsuitable for simple storage of small quantities of raw materials. Utility Model Content

[0004] The problem this invention aims to solve is to provide a low-cost, simple, and effective oxygen-free sealed container capable of storing small quantities of powder samples. The technical solution is as follows: To solve the above-mentioned technical problems, the technical solution proposed by this utility model is: a sealed container that can be filled with inert gas, comprising: The sealing cover is provided with an inert gas inlet assembly and an exhaust assembly. A sealing element is provided between the sealing cap and the open end face of the tank body; It also includes a mechanical clamping mechanism, which includes an upper pressure pad, a lower pressure pad, and a locking member. The upper pressure pad is fitted onto the side of the sealing cap, and the lower pressure pad is fitted onto the side of the tank body. Both the upper and lower pressure pads include an annular portion and at least one protruding piece extending outward from the annular portion. The protruding piece has a through hole. The locking member passes through the through holes of the upper and lower pressure pads, and by tightening or fastening the locking member, the upper and lower pressure pads are brought closer to each other.

[0005] In one embodiment, the locking member is a threaded locking member, including a threaded screw and a nut that mates with the threaded screw.

[0006] In one embodiment, the air intake assembly is an air intake nozzle fixedly installed on the sealing cover, and the exhaust assembly is an air outlet valve fixedly installed on the sealing cover.

[0007] In one embodiment, both the air inlet nozzle and the air outlet valve are sealed and installed on the sealing cover via a threaded connection.

[0008] In one embodiment, the seal is a silicone gasket.

[0009] In one embodiment, the upper pressure pad and the lower pressure pad each have multiple protrusions, which are evenly distributed circumferentially along their respective annular portions.

[0010] In one embodiment, the number of protruding pieces is two.

[0011] In one embodiment, the tank body and sealing cap are made of high-silicon glass, stainless steel, or graphite.

[0012] Compared with existing technologies, the beneficial effects of this invention are as follows: By setting independent air intake and exhaust components, and in conjunction with a pressurizable and sealable tank structure, it achieves efficient filling and releasing of inert gas inside the tank, and effectively controls the residual oxygen content inside the tank to a low level, such as ≤0.5% by volume. This meets the storage requirements of easily oxidized products such as high-purity carbon powder and nano-silicon powder, fundamentally solving the technical problems of easy oxidation and moisture absorption of highly active, high specific surface area raw materials. A simple mechanical pressing mechanism consisting of an upper pressure gasket, a lower pressure gasket, and a locking component replaces the traditional complex and expensive high-pressure sealing structure. While ensuring a reliable sealing effect, it significantly reduces manufacturing costs, making the overall cost of this sealed tank low and easy to promote and use. Through optimized overall structure and material selection, this invention combines ease of operation, safety and reliability, and wide applicability. No professional tools are required to manually and quickly complete the inflation, sealing and opening operations. The operation time is short and the environment inside the can is maintained at normal pressure, eliminating the risk of high pressure. At the same time, its small volume design and modular approach are well-suited for the short- to medium-term storage needs of small batches of laboratory samples or easily oxidized materials in small workshops. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of a sealed container capable of holding inert gas according to one embodiment of the present invention.

[0015] Figure 2 This is a structural schematic diagram of the upper pressure pad / lower pressure pad according to one embodiment of the present invention.

[0016] Reference numerals: 1. Exhaust valve; 2. Inlet nozzle; 3. Sealing cap; 4. Threaded screw; 5a. Upper pressure gasket; 5b. Lower pressure gasket; 51. Circular part; 52. Protruding piece; 6. Silicone gasket; 7. Nut; 8. Tank body. Detailed Implementation

[0017] To facilitate understanding of this utility model, the following description will be provided in more comprehensive and detailed manner with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0018] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0019] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0020] Please see Figure 1-2 One embodiment of a sealed container for filling inert gas includes a container body 8 and a sealing cap 3 that mates with the opening of the container body 8. The sealing cap 3 is provided with an inlet assembly and an outlet assembly, forming a channel for the inert gas to flow in and for the air inside the container to be discharged. A sealing element 6 is provided between the sealing cap 3 and the opening end face of the container body 8. A mechanical clamping mechanism is also included to provide a stable and reliable locking and sealing force. The mechanical clamping mechanism includes an upper pressure pad 5a, a lower pressure pad 5b, and a locking element. The upper and lower pressure pads can evenly and symmetrically transmit the locking force to the sealing cap and the container body. The upper pressure pad 5a is fitted onto the side of the sealing cap 3, and the lower pressure pad 5b is fitted onto the side of the container body 8. Both the upper pressure pad 5a and the lower pressure pad 5b include an annular portion 51 and at least one protruding piece 52 extending outward from the annular portion 51. The annular portion 51 ensures a close fit with the component, and the protruding piece 52 provides a platform for the installation and operation of the locking element. The protruding piece 52 has a through hole. The locking element passes through the through holes of the upper pressure pad 5a and the lower pressure pad 5b, and by tightening or fastening the locking element, the upper pressure pad 5a and the lower pressure pad 5b are brought closer to each other, ultimately converting the operation into a vertical clamping force, so that the sealing cover 3 presses against the sealing element 6 to achieve a reliable seal.

[0021] Specifically, the locking component is a threaded locking component, including a threaded screw 4 and a nut 7 that mates with the threaded screw 4. This structure is inexpensive and can reliably maintain a compressed state.

[0022] Specifically, the air intake assembly is an air intake nozzle 2 fixedly installed on the sealing cover 3, and the exhaust assembly is an exhaust valve 1 fixedly installed on the sealing cover 3. The use of independent and dedicated nozzles and valves avoids mutual interference between the gas inflow and outflow paths, thus ensuring the replacement efficiency.

[0023] Specifically, the air inlet nozzle 2 and the air outlet valve 1 are both sealed and installed on the sealing cover 3 by means of threaded connection. The threaded connection method is reliable and easy to assemble, and at the same time facilitates the replacement and maintenance of individual components.

[0024] Specifically, the sealing element 6 is a silicone gasket. Silicone material has good elasticity and resilience, and can produce sufficient deformation under low clamping force to fill micro-unevenness and achieve effective sealing. At the same time, it has good chemical stability and is not easy to react with common chemical substances.

[0025] Specifically, both the upper pressure gasket 5a and the lower pressure gasket 5b have multiple protruding pieces 52, which are evenly distributed circumferentially along their respective annular portions 51. By applying pressure evenly at multiple points, the sealing cover can be effectively prevented from tilting due to uneven force, ensuring that the sealing element 6 is subjected to uniform force and improving the overall sealing reliability. Preferably, in a specific embodiment, the number of protruding pieces 52 is two and they are symmetrically arranged along the diameter of the annular portion 51. This scheme ensures uniform pressure application and, compared with three-point or multi-point pressing structures, has the advantages of fewer parts, simpler structure, and lower manufacturing cost.

[0026] Specifically, the tank body 8 and the sealing cap 3 are made of high-silicon glass, stainless steel or graphite.

[0027] The above-mentioned sealed container for filling inert gas is used as follows: First, loosen and remove the nut 7 and threaded screw 4, remove the upper pressure gasket 5a and sealing cap 3, and place the material to be stored into the container 8. Then, place the sealing element 6 on the open end face of the container 8, cover with the sealing cap 3, and place the upper pressure gasket 5a and lower pressure gasket 5b onto the sides of the sealing cap 3 and the container 8 respectively. Next, align the protruding pieces 52 of the upper and lower pressure gaskets, pass the threaded screw 4 through the through holes of the protruding pieces 52 of the upper and lower pressure gaskets, and initially lock by tightening the nut 7, so that the sealing cap 3 forms a preliminary seal with the container 8 through the sealing element 6. After completing the preliminary seal, perform the inert gas replacement operation. Connect the external inert gas source's delivery pipeline to the air inlet 2 on the sealing cap 3. Then, slowly open the external air supply valve and slightly open the outlet valve 1 on the sealing cover 3 to allow inert gas to enter the tank through the inlet nozzle 2, simultaneously driving the existing air in the tank to be discharged through the outlet valve 1. This replacement process continues for a certain period of time to ensure that the air in the tank is fully replaced. Once the gas in the tank has been fully replaced, first close the outlet valve 1, then close the external air supply valve and disconnect it from the inlet nozzle 2. At this point, the tank is filled with inert gas and maintains a slight positive pressure. Finally, check and tighten the threaded screws 4 and nuts 7 of the mechanical clamping mechanism again to ensure the reliability of the seal. Then, the entire sealed tank can be moved to a safe place for storage. When it is necessary to take out the material from the tank, simply loosen the nuts 7, open the sealing cover 3, and take out the material directly. The operation is simple and quick.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sealed container for filling with inert gas, comprising a container body and a sealing cap that fits with the opening of the container body, characterized in that: The sealing cover is provided with an inert gas inlet assembly and an exhaust assembly. A sealing element is provided between the sealing cap and the open end face of the tank body; It also includes a mechanical clamping mechanism, which includes an upper pressure pad, a lower pressure pad, and a locking member. The upper pressure pad is fitted onto the sealing cover, and the lower pressure pad is fitted onto the tank body. Both the upper and lower pressure pads include an annular portion and at least one protruding piece extending outward from the annular portion. The protruding piece has a through hole. The locking member passes through the through holes of the upper and lower pressure pads, and the upper and lower pressure pads are brought closer together by tightening or fastening the locking member.

2. The sealed container for filling with inert gas according to claim 1, characterized in that, The locking component is a threaded locking component, including a threaded screw and a nut that mates with the threaded screw.

3. The sealed container for filling with inert gas according to claim 1, characterized in that, The air intake assembly is an air intake nozzle fixedly installed on the sealing cover, and the air exhaust assembly is an air outlet valve fixedly installed on the sealing cover.

4. The sealed container for filling inert gas according to claim 3, characterized in that, Both the air inlet nozzle and the air outlet valve are sealed and installed on the sealing cover via threaded connection.

5. The sealed container for filling with inert gas according to claim 1, characterized in that, The sealing element is a silicone gasket.

6. The sealed container for filling with inert gas according to claim 1, characterized in that, The upper and lower pressure pads each have multiple protruding pieces, which are evenly distributed circumferentially along their respective annular portions.

7. The sealed container for filling with inert gas according to claim 6, characterized in that, The number of protruding pieces is 2.

8. The sealed container for filling with inert gas according to claim 1, characterized in that, The tank body and sealing cap are made of high-silicon glass, stainless steel, or graphite.

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