Fresh-keeping tank

Abstract

The utility model discloses a fresh-keeping tank which comprises a tank body and a tank cover, the tank body is connected with the tank cover in a sealing mode, an air extractor and a release valve are arranged on the tank cover, the air extractor comprises a base and a cover body which are arranged on the tank cover, a reset piece is arranged between the base and the cover body, a channel is arranged on the base, and the channel is communicated with the air extractor. A channel is formed in the base, a lower one-way venting plug is arranged on the channel, an upper one-way venting plug is arranged on the cover body, the cover body moves back and forth on the tank cover, and a transfer space is formed by the tank cover, the base and the cover body.

Description

Technical Field

[0001] The utility model relates to the technical field of storage containers, in particular to a fresh-keeping jar. Background Art

[0002] It is known that fresh-keeping jars (vacuum jars) are increasingly widely used in daily life. People use fresh-keeping jars (vacuum jars) to store food and other items that need to be properly preserved, such as biscuits, candies, cooked food, tea and other food and daily necessities, as well as various metal ornaments, paper documents or some valuable collectibles. They are placed in vacuum jars for vacuum preservation, so that the stored items will not rot or deteriorate due to various bacteria, water and moisture in the air, or become damp, moldy, oxidatively corroded, etc., effectively maintaining the freshness of food and drinks and ensuring the preservation quality of related items.

[0003] Among them, the fresh-keeping jar (vacuum jar) uses the vacuum method to preserve items in a vacuum, that is, the air in the sealed jar is extracted out of the jar body, thereby extracting various bacteria, moisture and humidity, etc., to create a good preservation environment. For example, the Chinese utility model patent with authorization announcement number CN202624908U discloses a storage container with an exhaust device and its container cover, in which an exhaust device including an exhaust cylinder, a piston ring and a spring is directly provided on the cylinder body of the container cover; the groove height of the annular groove is greater than the thickness of the piston ring, and the outer wall of the exhaust cylinder is provided with an exhaust groove, which is connected to the annular groove through a notch; an inner cylinder is installed at the lower end of the cylinder body, and a spring is sleeved on the outer side of the inner cylinder and supported upwardly to the cylinder cover of the exhaust cylinder; The cylinder body of the cylinder, the vacuum cylinder and the container cover together form a vacuum chamber; when the vacuum cylinder moves upward, the piston ring is at the lower side of the annular groove and closes the vacuum chamber, and the gas in the container enters the vacuum chamber through the air outlet and the one-way valve to form a vacuum structure; when the vacuum cylinder moves downward, the piston ring is at the upper side of the annular groove, the one-way valve closes the air outlet, and the gas in the vacuum chamber is connected to the notch and the exhaust groove through the annular groove to form an exhaust structure. It can be seen that this type of vacuum cylinder is also provided with an exhaust groove and a locking rib, which is conducive to exhaust, which is bound to increase the difficulty of the production and manufacturing structure, and will be worn during the long-term up and down movement, which will greatly reduce the service life. In view of this situation, it is necessary to improve the existing technology. Utility Model Content

[0004] (1) Technical issues that need to be resolved

[0005] In response to the deficiencies in the existing technology, the present invention provides a fresh-keeping jar with a reasonable design, a simpler structure, easy production and manufacturing, reduced production costs, and also conducive to increasing service life, which is more conducive to meeting user needs.

[0006] (2) Technical solutions that need to be adopted

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A fresh-keeping can includes a can body and a can cover, the can body is sealedly connected to the can cover, the can cover is provided with an exhaust device and a release valve, the exhaust device includes a base and a cover body provided on the can cover, a reset member is provided between the base and the cover body, the base is provided with a channel, the channel is provided with a lower one-way exhaust plug, the cover body is provided with an upper one-way exhaust plug, the cover body moves back and forth on the can cover, and the can cover, base and cover body form a transfer space.

[0009] Preferably, the tank cover includes an outer cover arranged on the tank body opening and an inner cover arranged on the inner side wall of the tank body opening, a sealing ring is arranged between the inner cover and the inner side wall of the tank body opening, the release valve is arranged on the outer cover, and a mounting hole for passing through the inner cover is arranged on the outer cover, and the base is arranged at the lower part of the mounting hole inside the tank body.

[0010] Preferably, the base is threadedly connected to the lower outer side wall of the mounting hole.

[0011] Preferably, a gasket is provided on the base, and the gasket is in contact with the lower end surface of the outer cover.

[0012] Preferably, a sealing ring is provided on the cover body located inside the tank cover.

[0013] Preferably, an exhaust plate is provided at the position of the tank cover at the lower part of the channel, and an exhaust hole is provided on the exhaust plate, and the exhaust hole is connected to the channel.

[0014] Preferably, a push button is provided on the cover.

[0015] Preferably, the release valve comprises a valve stem provided on the tank cover, and a return member and a gasket on the valve stem, wherein the gasket is located on the valve stem below the return member.

[0016] (3) Technical effects to be achieved

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] First, the vacuum device of the utility model includes a base and a cover body arranged on the tank cover, a reset piece is arranged between the base and the cover body, a channel is arranged on the base, a lower one-way exhaust plug is arranged on the channel, and an upper one-way exhaust plug is arranged on the cover body. The cover body moves back and forth on the tank cover, and the tank cover, the base and the cover body form a transfer space. This setting structure is simpler, easy to produce and manufacture, reduces the cost investment of production and manufacturing, and is also conducive to improving the service life, which is more conducive to meeting the user's usage needs.

[0019] Secondly, the tank cover of the utility model includes an outer cover arranged on the opening of the tank body and an inner cover arranged on the inner side wall of the tank body opening. A sealing ring is arranged between the inner cover and the inner side wall of the tank body opening. A release valve is arranged on the outer cover. A mounting hole for passing through the inner cover is arranged on the outer cover, and a base is arranged at the lower part of the mounting hole inside the tank body. The tank cover arranged in this way is more reasonable, convenient for production and manufacturing, and more conducive to the installation and manufacturing of the exhaust device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the utility model.

[0021] Figure 2 This is a schematic diagram of the main viewing direction of the present utility model.

[0022] Figure 3 for Figure 2 Cross-sectional view along the AA direction.

[0023] Figure 4 It is an overall schematic diagram of the utility model.

[0024] Figure 5 This is an explosion diagram of the utility model.

[0025] Figure 6 This is a schematic diagram of the structure of the reset piece installed on the base of the utility model.

[0026] Figure 7 This is a schematic diagram of the structure of an exhaust plate installed on the base of the utility model.

[0027] Figure 8 This is a schematic diagram of the structure of the cover body and the release valve installed on the inner cover of the utility model.

[0028] In the figure: 1, tank body; 2, tank cover; 3, exhaust device; 4, release valve; 21, outer cover; 22, inner cover; 23, sealing ring; 31, base; 32, cover body; 33, reset part; 34, channel; 35, lower one-way exhaust plug; 36, upper one-way exhaust plug; 37, transfer space; 38, press key; 41, valve stem; 42, return part; 43, gasket; 311, gasket; 321, sealing ring; 341, exhaust plate; 342, exhaust hole. DETAILED DESCRIPTION

[0029] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0030] In the description of the present utility model, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0031] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0033] Example 1: See Figures 1 to 8A fresh-keeping can includes a can body 1 and a can cover 2. The can body 1 is sealed with the can cover 2. An exhaust device 3 and a release valve 4 are provided on the can cover 2. The exhaust device 3 includes a base 31 and a cover 32 provided on the can cover 2. A reset member 33 is provided between the base 31 and the cover 32. A channel 34 is provided on the base 31. A lower one-way exhaust plug 35 is provided on the channel 34. An upper one-way exhaust plug 36 is provided on the cover 32. The cover 32 moves back and forth on the can cover 2, and the can cover 2, the base 31 and the cover 32 form a transfer space 37. When in use, the lower one-way exhaust plug 35 on the channel 34 is in a closed state, and an external force forces the cover body 32 to move downward, and the cover body 32 will compress the reset member 33. At this time, the air inside the transfer space 37 is compressed and the pressure will increase, which will force the upper one-way exhaust plug 36 on the cover body 32 to move upward and open, so that the gas will be discharged; and when the external force on the cover body 32 is removed, the cover body 32 returns to its original state under the reset action of the reset member 33, and the pressure inside the transfer space 37 will decrease. If the external pressure is greater than the pressure inside the transfer space 37, the upper one-way exhaust plug 36 on the cover body 32 will be opened. The exhaust plug 36 is forced to close, and the internal pressure of the transfer space 37 is lower than the internal pressure of the tank body 1. At this time, the lower one-way exhaust plug 35 on the channel 34 is forced to open, thereby allowing the air inside the tank body 1 to flow to the transfer space 37. In the process of the cover body 32 being subjected to external force and the external force being removed, the air inside the tank body 1 will gradually be discharged to the outside of the tank body 1; when the pressure difference between the inside and outside of the tank body 1 affects the force of the cover body 32 and the maximum elastic force of the reset member 33, the maximum effect is achieved at this time. If the cover body 32 continues to be subjected to external force at this time, the air extraction effect can no longer be produced.

[0034] Example 2: It can be explained based on Example 1, as shown in Figure 3 、 Figure 5 and Figure 8 As shown, the tank cover 2 includes an outer cover 21 arranged on the opening of the tank body 1 and an inner cover 22 arranged on the inner side wall of the opening of the tank body 1. A sealing ring 23 is arranged between the inner cover 22 and the inner side wall of the opening of the tank body 1. A release valve 4 is arranged on the outer cover 21, and a mounting hole for passing through the inner cover 22 is arranged on the outer cover 21. A base 31 is arranged at the lower part of the mounting hole inside the tank body 1. This arrangement is reasonable, simple in structure, easy to produce and manufacture, reduces the difficulty of production and manufacturing, and thus reduces the cost investment in production and manufacturing. It is further explained that the base 31 is threadedly connected to the outer side wall of the lower part of the mounting hole, which is convenient for disassembly and installation. It is further explained that a gasket 311 is arranged on the base 31, and the gasket 311 is in contact with the lower end face of the outer cover 21, which greatly improves the sealing performance.

[0035] Example 3: This can be explained based on Example 1 or Example 2, such as Figure 3 As shown, a sealing ring 321 is provided on the cover body 32 located inside the tank cover 2 , which is beneficial to improving the sealing effect of the transfer space 37 .

[0036] Example 4: This can be explained based on Example 1, Example 2, or Example 3. Figure 3 and Figure 7 As shown, an exhaust plate 341 is provided at the position of the tank cover 2 below the channel 34, and an exhaust hole 342 is provided on the exhaust plate 341. The exhaust hole 342 is connected to the channel 34, which is conducive to the gas inside the tank body 1 entering the channel 34 through the exhaust hole 342. In this embodiment, there are several exhaust holes 342, which greatly improves the exhaust effect.

[0037] Embodiment 5: It can be explained on the basis of embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4 that the reset member 33 is a spring, which is widely available and is also conducive to reset the spring.

[0038] Example 6: This can be explained on the basis of Example 1, Example 2, Example 3, Example 4, or Example 5. Figure 3 and Figure 5 As shown, the cover 32 is provided with a press key 38, which is conducive to convenient pressing. In this embodiment, the press key 38 is connected to the cover 32 in a snap-fit ​​manner for easy implementation.

[0039] Example 7: This can be described based on Example 1 or Example 2 or Example 3 or Example 4 or Example 5 or Example 6, as shown in FIG. Figure 3 and Figure 5 As shown, the release valve 4 includes a valve stem 41 provided on the tank cover 2, a return member 42 and a gasket 43 on the valve stem 41. The gasket 43 is located on the valve stem 41 below the return member 42, which facilitates sealing the tank cover 2. Further, the return member 42 is a spring for ease of implementation.

[0040] like Figures 1 to 8As shown, the lower one-way exhaust plug 35 on the channel 34 of the present invention is in a closed state. When the pressing key 38 is pressed, the pressing key 38 will force the cover body 32 to move downward, and the cover body 32 will also compress the reset member 33. At this time, the air inside the transfer space 37 is compressed and the pressure will increase, which will force the upper one-way exhaust plug 36 on the cover body 32 to move upward and open, so that the gas will be discharged; and when the pressing force on the pressing key 38 is released, the cover body 32 returns to its original state under the reset action of the reset member 33, the pressure inside the transfer space 37 will decrease, and the external pressure will be greater than the pressure inside the transfer space 37. The upper one-way exhaust plug 36 on the cover body 32 is opened. The cam 35 is forced to close, and the internal pressure of the transfer space 37 is lower than the internal pressure of the tank body 1. At this time, the lower one-way exhaust plug 35 on the channel 34 is forced to open, so that the air inside the tank body 1 flows into the transfer space 37, and the air flows to the outside through the gap between the pressing key 38 and the outer cover 21 of the tank cover 2. In the process of pressing and reciprocating the pressing key 38 and resetting, the air inside the tank body 1 will gradually be discharged to the outside of the tank body 1; when the pressure difference between the inside and outside of the tank body 1 on the pressing key 382 is balanced with the maximum elastic force of the reset member 33, the maximum effect is achieved at this time. If the pressing key 38 is still subjected to external force at this time, the air extraction effect can no longer be produced.

[0041] The utility model extracts the air inside the tank body 1 to reduce the air volume, so that the objects stored inside the tank body 1 are stored in a "relative vacuum" environment, the moisture content of the air is reduced, and the living environment of "bacteria" is lowered to achieve the preservation effect.

[0042] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part adopt conventional means such as mature bolts and rivets in the existing technology, which will not be described in detail here.

[0043] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection of the present utility model. Therefore, based on the innovative concept of the present utility model, changes and modifications to the embodiments described herein, or equivalent structural or process transformations made using the contents of the present utility model specification and drawings, and direct or indirect application of the above technical solutions to other related technical fields are all included in the scope of protection of the present utility model patent.

Claims

1. A fresh-keeping can comprising a can body (1) and a can cover (2), wherein the can body (1) and the can cover (2) are sealed together, and the can cover (2) is provided with an exhaust device (3) and a release valve (4), characterized in that: The air extraction device (3) comprises a base (31) and a cover (32) arranged on the tank cover (2); a reset member (33) is arranged between the base (31) and the cover (32); a channel (34) is arranged on the base (31); a lower one-way exhaust plug (35) is arranged on the channel (34); an upper one-way exhaust plug (36) is arranged on the cover (32); the cover (32) moves back and forth on the tank cover (2), and the tank cover (2), the base (31) and the cover (32) form a transfer space (37).

2. The fresh-keeping jar according to claim 1, characterized in that: The tank cover (2) comprises an outer cover (21) arranged on the opening of the tank body (1) and an inner cover (22) arranged on the inner side wall of the opening of the tank body (1); a sealing ring (23) is arranged between the inner cover (22) and the inner side wall of the opening of the tank body (1); the release valve (4) is arranged on the outer cover (21); a mounting hole for penetrating the inner cover (22) is provided on the outer cover (21); and the base (31) is provided at the lower part of the mounting hole located inside the tank body (1).

3. The fresh-keeping jar according to claim 2, characterized in that: The base (31) is threadedly connected to the lower outer side wall of the mounting hole.

4. The fresh-keeping jar according to claim 2, characterized in that: A gasket (311) is provided on the base (31), and the gasket (311) is in contact with the lower end surface of the outer cover (21).

5. The fresh-keeping jar according to claim 1, 2, 3 or 4, characterized in that: A sealing ring (321) is provided on the cover body (32) located inside the tank cover (2).

6. The fresh-keeping jar according to claim 1, 2, 3 or 4, characterized in that: An exhaust plate (341) is provided at the position of the tank cover (2) below the channel (34), and an exhaust hole (342) is provided on the exhaust plate (341), and the exhaust hole (342) is communicated with the channel (34).

7. The fresh-keeping jar according to claim 1, 2, 3 or 4, characterized in that: A press key (38) is provided on the cover (32).

8. The fresh-keeping jar according to claim 1, 2, 3 or 4, characterized in that: The release valve (4) comprises a valve stem (41) arranged on the tank cover (2), a return member (42) and a gasket (43) on the valve stem (41), wherein the gasket (43) is located on the valve stem (41) below the return member (42).

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