Nitrogen making machine for food preservation

Abstract

The utility model relates to the technical field of nitrogen making machines, and discloses a food fresh-keeping nitrogen making machine which comprises a bottom plate, a nitrogen making machine body, a nitrogen buffer tank and a fresh-keeping box are sequentially installed at the top of the bottom plate, a connecting pipe is communicated between the nitrogen making machine body and the nitrogen buffer tank, a nitrogen conveying pipe is communicated between the nitrogen buffer tank and the fresh-keeping box, and the nitrogen conveying pipe is communicated with the fresh-keeping box. A valve is installed on the nitrogen conveying pipe, a conical exhaust hole is formed in the top of the fresh-keeping box, and a plugging assembly is arranged in the conical exhaust hole. According to the fresh-keeping box, the conical exhaust hole is formed in the top of the fresh-keeping box, and the conical plug, the threaded rod, the threaded sleeve and the supporting frame are arranged in a matched mode, so that the threaded rod is rotated to push the conical plug to be away from or close to the conical exhaust hole, air in the fresh-keeping box is exhausted, and then plugging is conducted; compared with the prior art, the spring can be prevented from generating fatigue due to long-time work, and the blocking effect of the piston on the fresh-keeping box can be prevented from being influenced.

Description

Technical Field

[0001] This application relates to the technical field of nitrogen generators, and particularly to a nitrogen generator for food preservation. Background Art

[0002] The principle of nitrogen preservation is that nitrogen is an inert antibacterial gas that can inhibit the growth and reproduction of bacteria, thereby delaying the metabolic process of the cells of the stored items, and thus achieving the purpose of preservation. At the same time, the temperature of the food preserved with nitrogen does not change, and the moisture is not lost either. To a great extent, the original nutrition of the food is maintained, and the texture, color, and taste of the food are relatively good.

[0003] For example, the Chinese utility model patent with the publication number CN221027704U discloses a nitrogen generator for food preservation, which relates to the technical field of nitrogen generators. In this utility model, the fixed spring is compressed by the slider to discharge the air inside the preservation box, and the nitrogen concentration detector is used to detect the nitrogen concentration inside the preservation box. After the concentration is qualified, the nitrogen injection can be stopped. This structure realizes the discharge of air and conveniently adjusts the nitrogen concentration.

[0004] Regarding the above related technologies, the inventor believes that although the nitrogen generator for food preservation in the related technologies realizes the blocking of the exhaust passage on the preservation box by using a fixed spring to push the slider and the piston to move, the fixed spring is prone to fatigue after long-term compression use, resulting in the piston being unable to block the exhaust passage, affecting the sealing effect of the preservation box, and reducing the food preservation ability of the preservation box.

[0005] The above information disclosed in this background art is only used to increase the understanding of the background art of this application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Utility Model

[0006] In order to solve the problem that although the nitrogen generator for food preservation in the related technologies realizes the blocking of the exhaust passage on the preservation box by using a fixed spring to push the slider and the piston to move, the fixed spring is prone to fatigue after long-term compression use, resulting in the piston being unable to block the exhaust passage, affecting the sealing effect of the preservation box, and reducing the food preservation ability of the preservation box, this application provides a nitrogen generator for food preservation.

[0007] The nitrogen generator for food preservation provided by this application adopts the following technical solutions:

[0008] A food preservation nitrogen generator, including a bottom plate, on the top of which a nitrogen generator body, a nitrogen buffer tank and a preservation box are sequentially installed. A connecting pipe is connected between the nitrogen generator body and the nitrogen buffer tank, and a nitrogen delivery pipe is connected between the nitrogen buffer tank and the preservation box. A valve is installed on the nitrogen delivery pipe, and a conical exhaust hole is opened at the top of the preservation box. A plugging component is arranged in the conical exhaust hole. The plugging component includes a conical plug slidably arranged inside the conical exhaust hole. The top of the conical plug is rotatably connected with a threaded rod, and a threaded sleeve is threadedly connected to the outside of the threaded rod. Support frames are fixedly connected to the left and right side walls of the threaded sleeve, and the support frames are fixedly installed on the top of the preservation box. A nitrogen concentration detector is communicated with the side wall of the preservation box.

[0009] Preferably, the top of the threaded rod is fixedly connected with a turntable, and a plurality of anti-slip grooves are opened in the circumferential direction of the turntable.

[0010] Preferably, a sealing gasket is installed on the inner wall of the conical exhaust hole, and the sealing gasket is arranged in a conical shape.

[0011] Preferably, a box door is hinged to the open end of the preservation box through a hinge, and a handle is fixedly installed on the outer wall of the box door.

[0012] Preferably, a mating groove is opened on the outer wall of the preservation box, and a sealing ring is installed on the inner wall of the box door. The sealing ring is matched with the mating groove.

[0013] In summary, the present application includes the following beneficial technical effects:

[0014] 1. In the present application, a conical exhaust hole is opened at the top of the preservation box, and a conical plug, a threaded rod, a threaded sleeve and a support frame are arranged in cooperation, so that the conical plug can be pushed away from or close to the conical exhaust hole by rotating the threaded rod, realizing the discharge of the air inside the preservation box and then plugging it. Compared with the prior art, the present application can avoid the spring from generating fatigue due to long-term work, affecting the plugging effect of the piston on the preservation box.

[0015] 2. In the present application, a mating groove is opened on the preservation box, a sealing ring is installed on the box door in cooperation, and a sealing gasket is installed inside the conical exhaust hole in cooperation, so that the sealing effect of the preservation box can be improved, and further the food preservation ability is improved. Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the application embodiment;

[0017] Figure 2 is the structural schematic diagram of the preservation box of the application embodiment;

[0018] Figure 3 It is a schematic structural diagram of the plugging component in the application embodiment.

[0019] Explanation of reference numerals: 1, bottom plate; 2, nitrogen generator body; 3, connecting pipe; 4, nitrogen buffer tank; 5, nitrogen delivery pipe; 51, valve; 6, fresh-keeping box; 61, conical exhaust hole; 62, gasket; 63, mating groove; 7, plugging component; 71, support frame; 72, threaded sleeve; 73, threaded rod; 74, conical plug; 75, turntable; 8, box door; 81, handle; 82, sealing ring; 9, nitrogen concentration detector. Specific embodiments

[0020] The following will further elaborate on this application in conjunction with the attached Figures 1-3 drawings.

[0021] An embodiment of this application discloses a food preservation nitrogen generator. Referring to Figures 1-3 , a food preservation nitrogen generator includes a bottom plate 1. A nitrogen generator body 2, a nitrogen buffer tank 4, and a fresh-keeping box 6 are sequentially installed on the top of the bottom plate 1. A connecting pipe 3 is connected between the nitrogen generator body 2 and the nitrogen buffer tank 4. A nitrogen delivery pipe 5 is connected between the nitrogen buffer tank 4 and the fresh-keeping box 6. A valve 51 is installed on the nitrogen delivery pipe 5. A conical exhaust hole 61 is opened at the top of the fresh-keeping box 6. A plugging component 7 is arranged in the conical exhaust hole 61. The plugging component 7 includes a conical plug 74 slidably arranged inside the conical exhaust hole 61. The top of the conical plug 74 is rotatably connected to a threaded rod 73. A threaded sleeve 72 is threadedly connected to the outside of the threaded rod 73. Support frames 71 are fixedly connected to the left and right side walls of the threaded sleeve 72. The support frames 71 are fixedly installed on the top of the fresh-keeping box 6. A nitrogen concentration detector 9 is connected to the side wall of the fresh-keeping box 6.

[0022] Here, by rotating the threaded rod 73, the threaded rod 73 can push the conical plug 74 away from the conical exhaust hole 61. Then, start the nitrogen generator body 2. The nitrogen generator body 2 produces nitrogen and sends it into the nitrogen buffer tank 4 through the connecting pipe 3. Then, open the valve 51 to allow nitrogen to enter the fresh-keeping box 6 through the nitrogen delivery pipe 5. At this time, the pressure inside the fresh-keeping box 6 increases, so that the air inside can be discharged through the conical exhaust hole 61. When the nitrogen concentration detector 9 detects that the nitrogen concentration inside the fresh-keeping box 6 reaches the specified value, close the valve 51. At the same time, rotate the threaded rod 73 in the reverse direction. The threaded rod 73 can push the conical plug 74 upward to plug the conical exhaust hole 61.

[0023] Referring to Figure 3 , the top of the threaded rod 73 is fixedly connected to a turntable 75. A plurality of anti-slip grooves are opened in the circumferential direction of the turntable 75.

[0024] Here, by providing a turntable 75 with anti-slip grooves formed thereon, it is convenient to drive the threaded rod 73 to rotate.

[0025] Referring to Figure 2 , a gasket 62 is installed on the inner wall of the conical exhaust hole 61, and the gasket 62 is arranged in a conical shape.

[0026] Here, by installing a gasket 62 inside the conical plug 74, it can be ensured that nitrogen will not leak between the conical exhaust hole 61 and the conical plug 74, and the sealing performance of the fresh-keeping box 6 can be improved.

[0027] Referring to Figure 1 , a box door 8 is hinged to the open end of the fresh-keeping box 6 through a hinge, and a handle 81 is fixedly installed on the outer wall of the box door 8.

[0028] Here, by hinging a box door 8 on the fresh-keeping box 6 and installing a handle 81 on the box door 8, it is convenient to take and place food.

[0029] Referring to Figure 2 , a mating groove 63 is formed on the outer wall of the fresh-keeping box 6, and a sealing ring 82 is installed on the inner wall of the box door 8. The sealing ring 82 is matched with the mating groove 63.

[0030] Here, by forming a mating groove 63 on the fresh-keeping box 6, installing a sealing ring 82 on the box door 8, and matching the sealing ring 82 with the mating groove 63, the sealing performance of the fresh-keeping box 6 can be further improved.

[0031] The implementation principle of the food fresh-keeping nitrogen generator in the embodiment of the present application is as follows: When in use, place the device at a designated position, connect the power supply, then put the food to be fresh-kept into the fresh-keeping box 6, close the box door 8, rotate the turntable 75, the turntable 75 can drive the threaded rod 73 to rotate, the threaded rod 73 can push the conical plug 74 to move downward away from the conical exhaust hole 61, then start the nitrogen generator to generate nitrogen, the nitrogen can enter the nitrogen buffer tank 4 through the connecting pipe 3, open the valve 51, so that the nitrogen in the nitrogen buffer tank 4 can enter the fresh-keeping box 6 through the nitrogen delivery pipe 5. At this time, the pressure inside the fresh-keeping box 6 increases, so that the internal air can be discharged through the conical exhaust hole 61. When the nitrogen concentration detector 9 detects that the nitrogen concentration inside the fresh-keeping box 6 reaches the specified value, close the valve 51; at the same time, rotate the threaded rod 73 in the reverse direction, and the threaded rod 73 can push the conical plug 74 to move upward, so as to block the conical exhaust hole 61.

[0032] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to indicate the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0033] Second, in the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0034] Finally, the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

[0035] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered by the protection scope of this application.

Claims

1. A nitrogen generator for food preservation, comprising a bottom plate (1), characterized in that: A nitrogen generator body (2), a nitrogen buffer tank (4) and a fresh-keeping box (6) are sequentially mounted on the top of the bottom plate (1); a connecting pipe (3) is connected between the nitrogen generator body (2) and the nitrogen buffer tank (4); a nitrogen delivery pipe (5) is connected between the nitrogen buffer tank (4) and the fresh-keeping box (6); a valve (51) is mounted on the nitrogen delivery pipe (5); a conical exhaust hole (61) is opened on the top of the fresh-keeping box (6); a plugging component (7) is arranged in the conical exhaust hole (61); The plugging assembly (7) comprises a conical plug (74) slidably arranged inside the conical exhaust hole (61); the top of the conical plug (74) is rotatably connected to a threaded rod (73); the outer side of the threaded rod (73) is threadedly connected to a threaded sleeve (72); the left and right side walls of the threaded sleeve (72) are both fixedly connected to a support frame (71); the support frame (71) is fixedly installed on the top of the fresh-keeping box (6); and the side wall of the fresh-keeping box (6) is connected to a nitrogen concentration detector (9).

2. A food preservation nitrogen generator according to claim 1, characterized in that: A rotating disk (75) is fixedly connected to the top of the threaded rod (73), and a plurality of anti-slip grooves are provided in the circumferential direction of the rotating disk (75).

3. A food preservation nitrogen generator according to claim 1, characterized in that: A sealing gasket (62) is installed on the inner wall of the conical exhaust hole (61), and the sealing gasket (62) is arranged in a conical shape.

4. A food preservation nitrogen generator according to claim 1, characterized in that: The open end of the fresh-keeping box (6) is hingedly connected to a box door (8) via a hinge, and a handle (81) is fixedly mounted on the outer wall of the box door (8).

5. A food preservation nitrogen generator according to claim 4, characterized in that: A matching groove (63) is provided on the outer wall of the fresh-keeping box (6), and a sealing ring (82) is installed on the inner wall of the box door (8), and the sealing ring (82) matches the matching groove (63).

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