Air-tight device

Abstract

The airtight device includes a container and an airtight cover. The airtight cover is arranged on the container and includes a fixed frame, a door body and a pressurizing handle. The fixed frame has at least one through hole and at least one guide slot. The through hole is communicated with the internal space of the container. The guide slot has adjacent first and second top surfaces. The second top surface is higher than the first top surface. The door body selectively covers the through hole. The pressurizing handle is pivotally connected to the door body. The pressurizing handle includes a first segment, a second segment and a rotation axis. The rotation axis is located between the first and second segments. The first and second segments are rotatable relative to each other. The second segment is configured to be driven by force to move the first segment from under the second top surface to under the first top surface, so that the rotation axis is pressed on the door body.

Description

TECHNICAL FIELD

[0001] The present invention relates to an airtight device, in particular, an airtight device for preserving objects. BACKGROUND

[0002] With the advancement and popularization of technology, preservation devices (e.g. refrigerators, freezers or refrigerators) are widely used for preserving food and medicine.

[0003] In the process of preserving food and medicine, the door of the preservation device may have gaps due to insufficient closure, thereby negatively affecting the preservation effect, and the shelf life of the food and medicine may also be affected. Therefore, the food and medicine may be spoiled or expired and cannot be eaten or taken, thereby causing a serious waste situation.

[0004] Therefore, how to provide an airtight device capable of tightly closing the door, thereby avoiding air leakage and improving the preservation effect, has become one of the important issues. SUMMARY

[0005] To solve the above problems, the present invention provides an airtight device comprising a container and an airtight cover. The airtight cover is arranged on the container, wherein the airtight cover comprises a fixed frame, at least one door and a pressurizing handle. The fixed frame has at least one through hole and at least one guide slot, wherein the through hole communicates with the internal space of the container, and the guide slot has adjacent first and second top surfaces, wherein the second top surface is higher than the first top surface. The door selectively covers the through hole. The pressurizing handle is pivotally connected to the door, and the pressurizing handle comprises a first segment, a second segment and a rotation axis, the rotation axis is located between the first segment and the second segment, and the first segment and the second segment rotate relative to each other, and wherein the second segment is configured to be driven by force to drive the first segment to move from under the second top surface to under the first top surface, so that the rotation axis pressurizes the door.

[0006] In some embodiments of the present invention, the fixed frame further comprises a sliding track, the door has a protruding portion inserted into the sliding track, the sliding track is higher than the through hole and a first portion of the sliding track gradually increases in height relative to the through hole, and wherein the door is used to move towards or away from the lowest end of the first portion, so that the door is at a closed height or an open height.

[0007] In some embodiments of the present invention, a second portion of the sliding track has a constant height relative to the through hole, and the second portion communicates with the higher end of the first portion.

[0008] In some embodiments of the present invention, the door has a bearing, and the bearing is arranged on the protruding portion.

[0009] In some embodiments of the present invention, the airtight cover comprises a connecting rod, and the airtight cover comprises a plurality of pressurizing handles, and the second segments of the plurality of pressurizing handles are rotatably connected to the connecting rod.

[0010] In some embodiments of the present application, the airtight cover comprises a fixed lock, at least a portion of the fixed lock is disposed at the side of the door body, and the fixed lock is configured to move vertically to fix the door body to the fixed frame.

[0011] In some embodiments of the present application, the at least one door body comprises two door bodies, the door body comprises a sliding rail and a sliding block, and wherein one of the two door bodies is used to move above the other of the two door bodies, so that the sliding block of one of the two door bodies is slidably connected to the sliding rail of the other of the two door bodies.

[0012] Another aspect of the present application is to provide an airtight device. The airtight device comprises a container and an airtight cover. The airtight cover is disposed on the container, wherein the airtight cover comprises a fixed frame, two door bodies, and a plurality of pressurizing handles. The fixed frame has two through holes and a plurality of guide slots, the two through holes communicate with the internal space of the container, wherein each guide slot has an adjacent first top surface and a second top surface, wherein the second top surface is higher than the first top surface. The two door bodies selectively cover the two through holes, respectively. The plurality of pressurizing handles are pivotally connected to the two door bodies, wherein each pressurizing handle comprises a first segment, a second segment, and a rotation axis, the rotation axis is located between the first segment and the second segment, and the first segment and the second segment are configured to rotate relative to each other, and wherein the second segment is configured to be driven by force to move the first segment from below the second bottom surface to below the first top surface, so that the rotation axis pressurizes the door body.

[0013] In some embodiments of the present application, the fixed frame further comprises a sliding rail, each door body has a protruding portion inserted into the sliding rail, the sliding rail is higher than the through hole, and two first portions of the sliding rail gradually increase in height relative to the through hole, and wherein the door body is used to move towards or away from the lowest end of the first portion, so that the door body is at a closed height or an open height.

[0014] In some embodiments of the present application, a second portion of the sliding rail has a constant height relative to the through hole, the second portion is connected to the higher end of the two first portions and is located between the two first portions.

[0015] In some embodiments of the present application, each door body has a protruding portion and a bearing, the protruding portion is inserted into the sliding rail, and the bearing is disposed on the protruding portion.

[0016] In some embodiments of the present application, the airtight cover comprises a fixed rod, the fixed rod is connected to the fixed frame, and the fixed rod is disposed between the two through holes, wherein the fixed rod has a T-shaped cross-section and is used to fix the two door bodies from the side and from above.

[0017] In some embodiments of the present application, the airtight cover comprises a fixed lock, at least a portion of the fixed lock is disposed at the side of the door body, and the fixed lock is configured to move vertically to fix the door body to the fixed frame.

[0018] In some embodiments of the present invention, the two doors include a slide rail and a slider, and one of the two doors is used to move above the other of the two doors, such that the slider of one of the two doors is slidably connected to the slide rail of the other of the two doors.

[0019] In summary, the present invention provides an airtight device comprising a container and an airtight lid. The airtight lid covers the container and prevents gas or liquid from entering or leaving the container. Therefore, the items stored in the container (e.g., food or medicine) can be isolated from the outside environment, thereby preventing air leakage that could cause the stored items to spoil and become inedible or unsuitable for consumption. Furthermore, the airtight lid of the present invention is provided with a pressure handle, allowing the user to easily rotate the pressure handle to put the airtight lid into an airtight state or release it from the airtight state.

[0020] The above description is only used to illustrate the problem to be solved by the present invention, the technical means to solve the problem, and the effects produced, etc. The specific details of the present invention will be described in detail in the following embodiments and related drawings. Attached Figure Description

[0021] To achieve the aforementioned advantages and features, the principles briefly described above will be explained in more detail with reference to embodiments, which are illustrated in the accompanying drawings. These drawings are merely illustrative of the invention and therefore do not limit the scope of the invention. The principles of the invention will be clearly explained through the drawings, and additional features and details will be fully described, wherein:

[0022] Figure 1 Schematic diagrams of airtight devices are shown according to some embodiments of the present invention;

[0023] Figure 2 An exploded view of the airtight cover is shown according to some embodiments of the present invention;

[0024] Figure 3 A partially enlarged view of the fixing frame of the airtight cover is shown according to some embodiments of the present invention;

[0025] Figure 4 A partially enlarged view of the door body of the airtight cover is shown according to some embodiments of the present invention;

[0026] Figure 5 A schematic diagram of an airtight cover is shown according to some embodiments of the present invention, wherein the airtight cover is in a pressurized state;

[0027] Figure 6 A schematic diagram of an airtight cover is shown according to some embodiments of the present invention, wherein the airtight cover is in a depressurized state;

[0028] Figure 7 The drawing is as follows Figure 5 Enlarged view of dashed box S3;

[0029] Figure 8 An enlarged view of the middle dashed box S4 is shown; Figure 6 An enlarged view of the middle dashed box S4 is shown;

[0030] Figure 9 A schematic view of the air-tight cover according to some embodiments of the present application is shown, wherein the air-tight cover is in an open state; and

[0031] Figure 10 A cross-sectional view of the fixed rod is shown according to Figure 2 the cross-sectional line X in FIG. 1.

[0032]

Symbolic explanation

[0033] 10: air-tight device

[0034] 100: container

[0035] 110: opening

[0036] 200: air-tight cover

[0037] 210: fixed frame

[0038] 211: through hole

[0039] 213: guide slot

[0040] 213a: first top surface

[0041] 213b: second top surface

[0042] 214: side wall

[0043] 215: sliding rail

[0044] 215a: first part

[0045] 215b: second part

[0046] 230: door body

[0047] 231: protruding part

[0048] 233: bearing

[0049] 234: handle

[0050] 235: sliding rail

[0051] 237: sliding block

[0052] 250: pressurizing handle

[0053] 251: first segment

[0054] 253: second segment

[0055] 255: rotation axis

[0056] 270: fixed rod

[0057] 280: fixed lock

[0058] 281: rotating hook

[0059] 281a: C-shaped portion

[0060] 281b: handle

[0061] 281c: rotating shaft

[0062] 283: fixed hook

[0063] 290: connecting rod

[0064] S1, S2, S3, S4: dashed box

[0065] X: cross-sectional line DETAILED DESCRIPTION

[0066] Embodiments of the present application will be described herein below with reference to the drawings. Numerous specific details will be set forth in the following description in order to provide a thorough understanding of the present application. However, it will be appreciated that these specific details are not intended to limit the present application. In other words, in some embodiments of the present application, to the extent there are method and / or system details set forth in the following description, such details are merely for providing a thorough description of embodiments of the present application, and do not limit the scope of the application. Furthermore, where a choice of details are given, or where contexts can suggest choices of details, a single representative details is used in the following description for simplicity. In addition, some well-known and commonly used structures and elements are not shown in the drawings or are shown in block diagram form and are readily understood by those skilled in the art.

[0067] Reference will now be made to Figure 1 , Figure 1 A schematic view of an airtight device 10 is shown. In some embodiments of the present application, the airtight device 10 can be a freezer, a refrigerator or a refrigerator-freezer, wherein the airtight device 10 includes a container 100 and an airtight cover 200, the airtight cover 200 is tightly arranged on an opening 110 of the container 100 and can completely cover the opening 110 and seal the container 100, thereby preventing gas and liquid from entering or leaving the container 100. Specifically, the container 100 can be a square or rectangular cabinet, and the container 100 can contain various types of objects (e.g., food or medicine). In addition, the airtight cover 200 includes a fixed frame 210, a door body 230 and a plurality of press handles 250, wherein a user can rotate the press handles 250 and apply pressure to the door body 230, so that the airtight cover 200 is in an airtight state. Then, the user can further reverse the rotation of the press handles 250 and release the pressure on the door body 230, so that the airtight cover 200 is released from the airtight state. The detailed structure and related content of the airtight cover 200 will be introduced in the following paragraphs. In some embodiments of the present application, the airtight cover 200 only includes a single door body 230, and a user can tightly close the single door body 230 against the fixed frame 210 and press the single door body 230 by using the press handles 250, so that the airtight cover 200 is in an airtight state.

[0068] Please refer to Figures 1 to 3 , Figure 2 An exploded view of the airtight cover 200 is shown. Figure 3 According to Figure 2 , a partial enlarged view of the fixing frame 210 is shown in the dashed box S1. In some embodiments of the present application, the fixing frame 210 has a through hole 211 and a plurality of guide slots 213, wherein the through hole 211 communicates with the inner space of the container 100, so that the user can take out the object contained in the container 100 through the through hole 211 of the airtight cover 200 or place the object in the container 100. In addition, the user can selectively move the door body 230 and cover the through hole 211 with the door body 230 or move away from the through hole 211, and the pressing handle 250 can be pivotally connected to the frame of the door body 230, wherein the pressing handle 250 includes a first section 251, a second section 253, and a rotating shaft 255 located between the first section 251 and the second section 253, and the first section 251 and the second section 253 are rotated relative to each other. In addition, the guide slot 213 has adjacent first and second top surfaces 213a and 213b, wherein the second top surface 213b is higher than the first top surface 213a, and the first and second top surfaces 213a and 213b can be connected flat, inclined or curved surfaces, and the first and second top surfaces 213a and 213b are clamped at an angle of less than 90 degrees. In actual application, the first section 251 of the pressing handle 250 can be pushed to insert into the guide slot 213, and when the first section 251 moves from under the second top surface 213b to under the first top surface 213a, the first section 251 pushes against the first top surface 213a and generates a reaction force to drive the rotating shaft 255 to press the door body 230, so that the airtight cover 200 is in an airtight state (see Figure 5 and Figure 7 , Figure 7 An enlarged view of Figure 5 in the dashed box S3 is shown. Then, when the first section 251 moves away from the first top surface 213a (for example, when the pressing handle 250 is pushed and the first section 251 moves along the first top surface 213a to the second top surface 213b), the aforementioned reaction force generated by the first top surface 213a on the first section 251 disappears, thereby causing the rotating shaft 255 to release pressure on the door body 230 and causing the airtight cover 200 to be in a non-airtight state (see Figure 6 and Figure 8 , Figure 8 An enlarged view of Figure 6 in the dashed box S4 is shown.

[0069] In particular, the fixed frame 210 can be made of a metal material, an alloy material, or a rigid polymer material, such as steel, aluminum, aluminum alloy, or plastic. In addition, the guide slot 213 on the fixed frame 210 can be manufactured by a pin cutting process or laser cutting, and the present application is not limited thereto. The shape of the door body 230 corresponds to the shape of the through hole 211 of the fixed frame 210, wherein the door body 230 can be square or rectangular, and the through hole 211 can also be square or rectangular. The door body 230 is slightly larger than the through hole 211, so that when the door body 230 covers the through hole 211, the door body 230 completely covers the through hole 211 from the top. In addition, the door body 230 has an outer frame and a transparent sheet, wherein the outer frame surrounds the transparent sheet to facilitate the user to directly observe the internal space of the container 100 through the door body 230. In addition, the outer frame can include metal, alloy, or polymer (for example, steel, aluminum, aluminum alloy, or rigid plastic), and the transparent sheet can include transparent glass or transparent polymer material, and the present application is not limited thereto.

[0070] In some embodiments of the present application, the fixed frame 210 further includes two side walls 214 and two sliding tracks 215, the two side walls 214 are respectively arranged on the corresponding two sides of the through hole 211 and extend from the upper surface of the fixed frame 210. The guide slot 213 and the sliding track 215 are arranged on at least one side of the side wall 214 facing the through hole 211, and the door body 230 is arranged between the two side walls 214 and is slidably connected between the two sliding tracks 215. In another embodiment of the present application, the guide slot 213 and the sliding track 215 can also extend from the front surface of the side wall 214 facing the through hole 211 to the rear surface of the side wall 214, so that the first section 251 can be smoothly rotated under stress after being inserted into the guide slot 213, but the present application is not limited thereto.

[0071] Please refer to Figure 4 . Figure 4 According to the dashed box S2 in Figure 2 , a partial enlarged view of the door body 230 is shown. In some embodiments of the present application, the door body 230 has a protruding portion 231, which is inserted into the sliding track 215 to facilitate the movement of the door body 230 relative to the sliding track 215. In addition, the door body 230 further includes a bearing 233, which is arranged on the protruding portion 231 and configured to roll in the sliding track 215. In actual application, the protruding portion 231 and the bearing 233 help the door body 230 to move close to the fixed frame 210.

[0072] In some embodiments of the present application, the door 230 further comprises a handle 234, wherein the handle 234 is disposed on opposite sides of the door 230 with the protrusion 231, and the user can operate the handle 234 to lift or move the door 230, wherein when the user moves the door 230 or rotates the door 230 relative to the protrusion 231, the sliding rail 215 simultaneously supports the protrusion 231, so that the protrusion 231 serves as a support point of the door 230, and thus the user can move or rotate the door 230 with less effort.

[0073] In particular, the sliding rail 215 is substantially inverted U-shaped, and the sliding rail 215 is higher than the upper surface of the fixed frame 210 and the through hole 211, wherein the height of the two first portions 215a of the sliding rail 215 relative to the upper surface of the fixed frame 210 and the through hole 211 gradually increases toward the center of the sliding rail 215, so that the first portions 215a are higher than the fixed frame 210 and extend obliquely on the upper surface of the fixed frame 210. In addition, the height of the second portion 215b of the sliding rail 215 relative to the through hole 211 is constant, wherein the second portion 215b is connected to the higher ends of the two first portions 215a and is located between the two first portions 215a, so that the height of the first portions 215a relative to the upper surface of the fixed frame 210 and the through hole 211 gradually increases toward the second portion 215b. In addition, the door 230 can be obliquely moved (including horizontally and vertically) along the first portions 215a of the sliding rail 215, and the door 230 can also be horizontally moved along the second portion 215b of the sliding rail 215, wherein the door 230 can also be moved between the first portions 215a and the second portion 215b by being pushed.

[0074] In actual application, the door 230 moves toward or away from the lowermost end of the first portion 215a, so that the air-tight cover 200 is in a closed state or an open state, and the door 230 can be moved along the first portion 215a toward or away from the through hole 211. Please refer to Figure 5 or Figure 6 , the door 230 is located at the lowermost end of the first portion 215a, and at this time, the door 230 is located at the closing height, so that the air-tight cover 200 is in a closed state. Please refer to Figure 9When the door body 230 is located at the highest end of the first portion 215a or the second portion 215b, the door body 230 is at the opening height, and the air-tight cover 200 is in the open state. In addition, the opening height of the door body 230 is greater than the thickness of the other door body 230, so that one of the two door bodies 230 can be moved along the sliding rail 215 to be above the other door body 230 at the opening height, so that the two door bodies 230 are partially overlapped from the top, and the two door bodies 230 can be substantially maintained parallel to each other at the closing height and the opening height, so that the space required to open or close the door body 230 is very small.

[0075] In some embodiments of the present application, the plurality of guide slots 213 is lower than the second portion 215b of the sliding rail 215, and the plurality of guide slots 213 is arranged between the two first portions 215a, so that when the door body 230 is located at the second portion 215b and covers the through hole 211 at the closing height, the pressing handle 250 pushes against the guide slot 213 to press the door body 230, thereby avoiding interference with the door body 230 when the pressing handle 250 rotates, but the present application is not limited thereto.

[0076] In some embodiments of the present application, the door body 230 includes two sliding rails 235 and two sliding blocks 237 extending in parallel, wherein the sliding rail 235 is arranged on the upper surface of the door body 230, the sliding block 237 is arranged on the lower surface of the door body 230, and the sliding rail 235 extends from one edge of the door body 230 to the other corresponding edge of the door body 230 (for example, two opposite edges of the door body 230), so that the sliding rail 235 can reinforce the door body 230 and improve the mechanical strength of the door body 230. Please refer to Figure 6 and Figure 9 One of the two door bodies 230 can be moved along the sliding rail 215 to be above the other door body 230, so that the sliding block 237 of one of the two door bodies 230 is slidably connected to the sliding rail 235 of the other door body 230, so that the two door bodies 230 can be stacked on each other to support each other, facilitating the horizontal movement of the two door bodies 230 relative to each other. Specifically, the sliding block 237 can be provided with a roller to facilitate the movement of the sliding block 237 on the sliding rail 235 through the roller.

[0077] Please refer to Figure 10 , Figure 10 is according to Figure 2FIG. 7 is a cross-sectional view of the fixed rod 270 taken along the cross-sectional line X shown in FIG. 6. In some embodiments of the present application, the air-tight cover 200 includes the fixed rod 270, which is detachably connected to the fixed frame 210 and is used to secure the door body 230 between two pairs of the through holes 211 and across the two sides of the through holes 211. The fixed rod 270 has a T-shaped cross-section and can secure the door body 230 to the fixed frame 210 from the lateral and upper sides. In addition, the pressurizing handle 250 can be disposed on the fixed rod 270 and pressurize the fixed rod 270, which in turn pressurizes the door body 230 through the fixed rod 270. Therefore, the air-tight cover 200 can further provide excellent air-tightness and enhance the mechanical strength of the whole through the combination of the pressurizing handle 250 and the fixed rod 270.

[0078] Please refer to Figure 2 and Figure 3 In some embodiments of the present application, the air-tight cover 200 includes the fixed lock 280, at least a portion of which is disposed on the side of the door body 230 and is configured to move vertically to secure the door body 230 to the fixed frame 210. The fixed lock 280 includes a rotating hook 281 and a fixed hook 283, and the rotating hook 281 is configured to selectively secure the fixed hook 283. The rotating hook 281 is disposed on the side of the door body 230, and the fixed hook 283 is disposed on the fixed frame 210 and adjacent to the edge of the through hole 211. Specifically, the rotating hook 281 includes a C-shaped portion 281a, a handle 281b, and a rotating shaft 281c. The C-shaped portion 281a is rotatably connected to the rotating shaft 281c, and the handle 281b is disposed on one end of the C-shaped portion 281a. The handle 281b is configured to be pushed to rotate the C-shaped portion 281a relative to the rotating shaft 281c, so that the C-shaped portion 281a is further secured to or separated from the fixed hook 283, thereby allowing the door body 230 to be secured to or detached from the fixed frame 210. Therefore, the user can simply rotate the fixed lock 280 along the vertical plane to lock the door body 230 to the fixed frame 210. Compared with the general fixed structure, the rotating hook 281 of the fixed lock 280 can only rotate along the vertical plane and hook the fixed hook 283, so that the fixed lock 280 essentially has the function of saving space.

[0079] In some embodiments of the present application, the airtight cover 200 does not include the sidewall 214 and the sliding rail 215, and the door body 230 is detachably fixed to the fixed frame 210. Therefore, the user can place the door body 230 separated from the fixed frame 210 on the fixed frame 210, and then fix the fixed frame 210 and the door body 230 to each other by the fixing lock 280. Then, the user can apply pressure to the door body 230 by the pressing handle 250, so that the airtight cover 200 is in the airtight state. In addition, after the user releases the airtight state of the airtight cover 200 by the pressing handle 250, the user can further unlock the fixing lock 280, so that the door body 230 is in the state of being detachable from the fixed frame 210, so as to facilitate the user to move the door body 230 away from the fixed frame 210.

[0080] Please refer to Figures 5 to 8 In some embodiments of the present application, the airtight cover 200 includes the connecting rod 290, and the second section 253 of the plurality of pressing handles 250 is rotatably connected to the connecting rod 290. Therefore, the user can push the connecting rod 290 to simultaneously move the plurality of pressing handles 250 and apply pressure or release pressure to the door body 230, so as to effectively make the airtight cover 200 in the airtight state and avoid air leakage.

[0081] In summary, the present application provides an airtight device having a container and an airtight cover, the airtight cover covers the container and can avoid air or liquid from moving into or out of the container, so that the stored goods (such as food or medicine) in the container can be isolated from the outside world, thereby avoiding air leakage to cause the stored goods to spoil and cannot be eaten or taken. In addition, the airtight cover of the present application is provided with a pressing handle, and the user can simply rotate the pressing handle to make the airtight cover in the airtight state or release the airtight state.

[0082] The different embodiments of the present application have been described above, and it should be understood that the different embodiments are only presented as examples, not as limitations. Many modifications can be made to the embodiments of the present application according to the disclosure herein without departing from the spirit and scope of the present application. Therefore, the scope and range of the present application should not be limited by the above-described embodiments.

Claims

1. A gas-tight device, characterized in that, Comprising: a container; and an airtight cover disposed on the container, wherein the airtight cover comprises: a fixed frame having at least one through hole and at least one guide slot, wherein the through hole communicates with an inner space of the container, and the guide slot has adjacent first and second top surfaces, wherein the second top surface is higher than the first top surface; at least one door body selectively covering the through hole; and a pressurizing handle pivotally connected to the door body, the pressurizing handle comprising a first segment, a second segment, and a rotation axis between the first segment and the second segment, and the first segment and the second segment are configured to rotate relative to each other, and wherein the second segment is configured to be driven by force to move the first segment from below the second top surface to below the first top surface, so that the rotation axis pressurizes the door body; the airtight cover comprises a connecting rod, and the second segments of a plurality of the pressurizing handles are rotatably connected to the connecting rod.

2. The air-tight device of claim 1, wherein, The fixed frame further comprises a sliding track, the door body has a protruding portion inserted into the sliding track, the sliding track is higher than the through hole, and a first portion of the sliding track is tapered relative to the height of the through hole, and wherein the door body is used to move towards or away from the lowest end of the first portion, so that the door body is at a closed height or an open height.

3. The air-tight device of claim 2, wherein, A second portion of the sliding track has a constant height relative to the through hole, and the second portion communicates with the higher end of the first portion.

4. The air-tight device of claim 2, wherein, The door body has a bearing disposed on the protruding portion.

5. The air-tight device of claim 1, wherein, The airtight cover comprises a fixed lock, at least a portion of the fixed lock is disposed on the side of the door body and is configured to move vertically to fix the door body to the fixed frame.

6. The air-tight device of claim 1, wherein, The at least one door body comprises two door bodies, each of the two door bodies comprises a sliding rail and a sliding block, and wherein one of the two door bodies is used to move above the other of the two door bodies, so that the sliding block of one of the two door bodies is slidably connected to the sliding rail of the other of the two door bodies.

7. A gas-tight device, characterized by Comprising: a container; and an airtight cover disposed on the container, wherein the airtight cover comprises: a fixed frame having two through holes and a plurality of guide slots, wherein the two through holes communicate with an inner space of the container, and each of the guide slots has adjacent first and second top surfaces, wherein the second top surface is higher than the first top surface; two door bodies selectively covering the two through holes, respectively; and a plurality of pressurizing handles pivotally connected to the two door bodies, wherein each of the pressurizing handles comprises a first segment, a second segment, and a rotation axis between the first segment and the second segment, and the first segment and the second segment are configured to rotate relative to each other, and wherein the second segment is configured to be driven by force to move the first segment from below the second top surface to below the first top surface, so that the rotation axis pressurizes one of the two door bodies; the airtight cover comprises a connecting rod, and the second segments of the plurality of pressurizing handles are rotatably connected to the connecting rod.

8. The air-tight device of claim 7, wherein, The fixed frame further comprises a sliding track, each of the two door bodies has a protruding portion inserted into the sliding track, the sliding track is higher than the through hole, and two first portions of the sliding track are tapered relative to the height of the through hole, and wherein the two door bodies are used to move towards or away from the lowest end of the two first portions, so that the two door bodies are at a closed height or an open height.

9. The air-tight device of claim 8, wherein, The second part of the sliding rail has a constant height relative to the through hole, and is connected to higher ends of the two first parts and located between the two first parts.

10. The air-tight device of claim 8, wherein, Each of the two doors has a bearing disposed on the protruding portion.

11. The air-tight device of claim 7, wherein, The airtight cover includes a fixing rod connected to the fixing frame and disposed between the two through holes, wherein the fixing rod has a T-shaped cross section and is used for fixing the two doors from the side and from above.

12. The air-tight device of claim 7, wherein, The airtight cover includes a fixing lock, at least a part of which is disposed on a side of one of the two doors, and the fixing lock is configured to move vertically to fix one of the two doors to the fixing frame.

13. The air-tight device of claim 7, wherein, Each of the two doors includes a sliding rail and a sliding block, and wherein one of the two doors is used to move above the other of the two doors, so that the sliding block of one of the two doors is slidably connected to the sliding rail of the other of the two doors.

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