Vacuum sealer with pressure display function

Abstract

Provided is a vacuum sealer with a pressure display function. The vacuum sealer comprises a body (1) and a pressure display mechanism (2), wherein a vacuum pump (11) is provided in the body (1); the pressure display mechanism (2) comprises a housing (22), a spring (23), a piston (24) and a pointer assembly (25); the housing (22) is provided with a window (220) and is in communication with the vacuum pump (11); and the piston (24) and the spring (23) are arranged in the housing (22) in a mutually matching manner, and are used for driving, on the basis of the pressure of the vacuum pump (11), the pointer assembly (25) to move in the window (220), so as to indicate the pressure state of the vacuum pump (11). The pressure display mechanism (2) can clearly and visually display the pressure state in a fresh-keeping container while the vacuum sealer is evacuating air, which makes it convenient for a user to accurately control the air evacuating process, and thus deformation due to over-evacuation is prevented on the basis of ensuring that the air in the fresh-keeping container is thoroughly evacuated. The vacuum sealer has the advantages of a simple structure, a clever design, good practicability, a wide range of application, etc.

Description

A vacuum fresh-keeping machine with pressure display function Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a vacuum fresh-keeping machine with a pressure display function. Background Art

[0002] Vacuum fresh-keeping machines are a recent product. They primarily remove air from fresh-keeping containers (such as fresh-keeping bags and boxes) and seal them after reaching a predetermined vacuum level. This effectively blocks the breeding ground for bacteria and prevents food spoilage, effectively sealing, preserving freshness, and maintaining quality. However, most existing vacuum fresh-keeping machines lack a pressure display. During vacuuming, users cannot accurately control the negative pressure within the container. This can easily cause the container to deform due to excessive internal and external pressure differences, or air may not be completely removed, affecting the preservation effect. Summary of the Invention

[0003] The utility model provides a vacuum fresh-keeping machine with a pressure display function, the main purpose of which is to solve the problem of complex structure of the exhaust device of the existing cold brew coffee machine.

[0004] The utility model adopts the following technical solutions:

[0005] A vacuum preservation machine with a pressure display function comprises a machine body and a pressure display mechanism; a vacuum pump is provided in the machine body; the pressure display mechanism comprises a shell, a spring, a piston and a pointer assembly, the shell is provided with a window, and the shell is connected to the vacuum pump, the piston and the spring are arranged in cooperation with each other in the shell, and are used to drive the pointer assembly to move in the window according to the pressure of the vacuum pump, thereby indicating the pressure status of the vacuum pump.

[0006] Furthermore, the window is a bar-shaped structure, and the pointer component is arranged in the window so as to be movable left and right.

[0007] Furthermore, the pointer assembly includes a float and a connecting rod. The float is horizontally movably arranged in the window. The float is vertically arranged on one end of the connecting rod, and the other end is fixedly connected to the piston.

[0008] Furthermore, the window is a circular structure, and the pointer assembly is rotatably disposed in the window.

[0009] Furthermore, the pointer assembly includes a rack, a gear and a pointer. The gear is rotatably installed in the window, and the pointer is fixed in the middle of the gear. The rack is fixedly connected to the piston and meshes with the gear.

[0010] Furthermore, the pressure display mechanism is arranged in the body, and the body is provided with a hollow portion at a position corresponding to the window and provided with scale values.

[0011] Furthermore, the pressure display mechanism is arranged outside the body, and the shell is provided with scale values ​​beside the window.

[0012] Furthermore, the piston is provided with a guide rod with a limiting boss, the spring is sleeved on the outside of the guide rod, one end of the spring abuts against the limiting boss, and the other end abuts against the side wall of the shell.

[0013] Furthermore, the shell is connected to the vacuum pump through a connecting pipe; or the shell is connected to the vacuum pump through a sealed cavity of the vacuum preservation machine.

[0014] Furthermore, a cover is detachably provided at one end of the housing, and the cover and the outside of the piston are both sleeved with a sealing ring that abuts against the inner wall of the housing.

[0015] Compared with the prior art, the beneficial effects produced by the present invention are:

[0016] The pressure display mechanism of the utility model can clearly and intuitively display the pressure state in the fresh-keeping container when the vacuum preservation machine is evacuating the vacuum, thereby facilitating the user to accurately control the vacuuming process, thereby ensuring that the air in the fresh-keeping container is completely exhausted and avoiding the occurrence of shrinkage and deformation. The utility model has the advantages of simple structure, ingenious design, good practicality and wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic structural diagram of a first embodiment of the present invention.

[0018] FIG2 is a schematic structural diagram of a pressure display mechanism and a vacuum pump in a first embodiment of the present invention.

[0019] FIG3 is an exploded schematic diagram of the pressure display mechanism in the first embodiment of the present invention.

[0020] FIG4 is a cross-sectional schematic diagram of the pressure display mechanism in the first embodiment of the present invention.

[0021] FIG5 is a schematic structural diagram of the pressure display mechanism and the vacuum pump in the second embodiment of the present invention.

[0022] FIG6 is a cross-sectional schematic diagram of the pressure display mechanism in the second embodiment of the present invention.

[0023] In the figure: 1-body; 11-vacuum pump; 12-hollow part; 2-pressure display mechanism; 21-connecting pipe; 22-housing; 220-window; 221-arc-shaped protrusion; 222-cover; 223-interface; 23-spring; 24-piston; 241-limiting boss; 242-guide rod; 25-pointer assembly; 251-buoy; 252-connecting rod; 253-rack; 254-gear; 255-pointer; 26-sealing ring. DETAILED DESCRIPTION

[0024] The specific embodiments of the present invention will be described below with reference to the accompanying drawings. In order to fully understand the present invention, many details are described below, but for those skilled in the art, the present invention can be implemented without these details. Example

[0025] As shown in Figures 1 to 4, this embodiment provides a vacuum fresh-keeping machine with a pressure display function, comprising a machine body 1 and a pressure display mechanism 2; a vacuum pump 11 is provided in the machine body 1; the pressure display mechanism 2 comprises a housing 22, a spring 23, a piston 24, and a pointer assembly 25; the housing 22 is provided with a window 220, and the housing 22 is connected to the vacuum pump 11; the piston 24 and the spring 23 are mutually arranged in the housing 22, and are used to drive the pointer assembly 25 to move in the window 220 according to the pressure of the vacuum pump 11, thereby indicating the pressure state of the vacuum pump 11. The pressure display mechanism 2 in the present invention can clearly and intuitively display the pressure state in the fresh-keeping container during vacuuming, thereby facilitating the user to accurately control the vacuuming process, thereby ensuring that the air in the fresh-keeping container is completely expelled and avoiding the occurrence of deflation and deformation. The present invention has the advantages of simple structure, ingenious design, good practicality, and a wide range of applications.

[0026] As shown in Figures 2 to 4, the housing 22 in this embodiment is connected to the vacuum pump 11 through an additional connecting pipe 21. In other embodiments, the housing 22 can also be directly connected to the vacuum pump 11 through the original sealed cavity of the vacuum preservation machine.

[0027] As shown in Figures 2 to 4, the window 220 in this embodiment is preferably a strip-shaped structure, and the pointer assembly 25 is arranged in the window 220 so as to be movable left and right. Specifically, the pointer assembly 25 includes a float 251 and a connecting rod 252. The float 251 is arranged in the window 220 so as to be movable horizontally. The float 251 is vertically provided at one end of the connecting rod 252, and the other end is fixedly connected to the piston 24. When the pressure value in the vacuum pump 11 changes, the piston 24 will drive the connecting rod and the float 251 to move horizontally in the window 220 under the synchronous action of the pressure and the spring 23, thereby indicating the corresponding pressure value. Based on the specific structure of the pointer assembly 25, the shell 22 is designed as a cylindrical structure in this embodiment, so that the pressure display mechanism 2 as a whole is more aesthetically pleasing.

[0028] As shown in Figures 3 and 4, the piston 24 is provided with a guide rod 242 having a limiting boss 241. The spring 23 is sleeved on the outside of the guide rod 242. One end of the spring 23 abuts the limiting boss 241, and the other end abuts the side wall of the housing 22. The guide rod 242 serves as a guide, ensuring that the piston 24 smoothly moves horizontally under the pressure of the vacuum pump 11 or the elastic force of the spring 23, thereby driving the pointer assembly 25 to accurately indicate the current negative pressure value.

[0029] As shown in Figures 3 and 4, the front end of the housing 22 is provided with an arc-shaped protrusion 221, which is used to limit the displacement distance of the piston 24. The rear end of the housing 22 is detachably provided with a cover 222. This allows for easy assembly and maintenance of components such as the piston 24 and spring 23 within the housing 22. To facilitate connection with the vacuum pump 11, the cover 222 is also provided with an interface 223 for mounting the connecting tube 21. Furthermore, a sealing ring 26 is sheathed around the cover 222 and the piston 24, abutting against the inner wall of the housing 22 to ensure a tight seal within the housing 22.

[0030] As shown in FIG1 , the pressure display mechanism 2 in this embodiment is disposed within the housing 1 . The housing 1 includes a hollow portion 12 at a position corresponding to the window 220 , along with corresponding scale values ​​(not shown). Specifically, the scale values ​​do not need to reflect detailed pressure values, but only need to indicate three pressure levels: "low," "medium," and "high." Alternatively, in other embodiments, the pressure display mechanism 2 can be disposed directly outside the housing 1 , with scale values ​​provided adjacent to the window 220 of the housing 22 . Example

[0031] Unlike the first embodiment, the window 220 in this embodiment is a circular structure, and the pointer assembly 25 is rotatably disposed in the window 220. Specifically, the pointer assembly 25 in this embodiment includes a rack 253, a gear 254, and a pointer 255. The gear 254 is rotatably mounted in the window 220, and a pointer 255 is fixedly disposed in the middle of the gear 254. The rack 253 is fixedly connected to the piston 24 and meshes with the gear 254. When the pressure value in the vacuum pump 11 changes, the piston 24 will drive the rack 253 to move horizontally under the synchronous action of the pressure and the spring 23, and then drive the gear 254 and the pointer 255 to rotate in the window 220, thereby indicating the corresponding pressure value. Based on the specific structure of the pointer assembly 25, the housing 22 in this embodiment is designed as a rectangular structure, so that the pressure display mechanism 2 as a whole is more aesthetically pleasing.

[0032] The above is only a specific implementation method of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A vacuum fresh-keeping machine with a pressure display function, characterized by: It includes a body and a pressure display mechanism; a vacuum pump is provided in the body; the pressure display mechanism includes a shell, a spring, a piston and a pointer assembly, the shell is provided with a window, and the shell is connected to the vacuum pump, the piston and the spring are arranged in the shell in a mutually coordinated manner, and are used to drive the pointer assembly to move in the window according to the pressure of the vacuum pump, thereby indicating the pressure status of the vacuum pump.

2. The vacuum fresh-keeping machine with pressure display function according to claim 1, characterized in that: The window is a bar-shaped structure, and the pointer component is arranged in the window so as to be movable left and right.

3. The vacuum fresh-keeping machine with pressure display function according to claim 2, characterized in that: The pointer assembly includes a float and a connecting rod. The float is horizontally movably arranged in the window. The float is vertically arranged on one end of the connecting rod, and the other end is fixedly connected to the piston.

4. The vacuum fresh-keeping machine with pressure display function according to claim 1, characterized in that: The window is a circular structure, and the pointer assembly is rotatably arranged in the window.

5. The vacuum fresh-keeping machine with pressure display function according to claim 4, characterized in that: The pointer assembly includes a rack, a gear and a pointer. The gear is rotatably installed in the window, and the pointer is fixed in the middle of the gear. The rack is fixedly connected to the piston and meshes with the gear.

6. The vacuum fresh-keeping machine with pressure display function according to claim 1, characterized in that: The pressure display mechanism is arranged in the body, and the body is provided with a hollow portion at a position corresponding to the window and provided with scale values.

7. The vacuum fresh-keeping machine with pressure display function according to claim 1, characterized in that: The pressure display mechanism is arranged outside the body, and the shell is provided with scale values ​​beside the window.

8. The vacuum fresh-keeping machine with pressure display function according to claim 1, characterized in that: The piston is provided with a guide rod with a limiting boss. The spring is sleeved on the outside of the guide rod. One end of the spring abuts against the limiting boss, and the other end abuts against the side wall of the shell.

9. The vacuum fresh-keeping machine with pressure display function according to claim 1, characterized in that: The shell is connected to the vacuum pump through a connecting pipe; or the shell is connected to the vacuum pump through a sealed cavity of the vacuum preservation machine.

10. The vacuum fresh-keeping machine with pressure display function according to claim 1, characterized in that: A cover is detachably provided at one end of the shell, and the cover and the outside of the piston are both sleeved with sealing rings that abut against the inner wall of the shell.

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