Vacuum-pumping fresh-keeping sealing machine

Abstract

The utility model relates to a vacuum-pumping fresh-keeping sealing machine which comprises an upper cover and a lower seat hinged with the rear side of the upper cover, a vacuum-pumping cavity is arranged between the upper cover and the lower seat, the upper cover and / or the lower seat are / is provided with a vacuum-pumping device, the vacuum-pumping device is connected with the vacuum-pumping cavity through an air pipe, and the air pipe is connected with the vacuum-pumping cavity. The upper cover and / or the lower base are / is provided with a control circuit board, the vacuumizing device is electrically connected with the control circuit board, a heat sealing assembly electrically connected with the control circuit board is arranged on the front side of the upper cover and / or the lower base, and a pressure relief opening is formed in the vacuumizing cavity or the air pipe. A pressure relief mechanism is arranged on the upper cover and / or the lower seat, the pressure relief mechanism is matched with the pressure relief opening in a sealing mode, and the pressure relief mechanism of the sealing machine is simple in structure, low in cost, high in reliability and large in pressure relief degree.

Description

Technical Field

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

[0002] Vacuum-packed products use vacuum extraction equipment to remove the air in the vacuum packaging bag, and then cooperate with a hot melt device to perform hot melt sealing at the opening of the vacuum packaging bag to achieve the purpose of vacuum sealing in the vacuum packaging bag, thereby keeping the food fresh and hygienic.

[0003] The existing automatic locking vacuum sealing machine includes an upper cover and a lower seat. The upper cover is rotatably mounted on the upper part of the lower seat. The top surface of the front side of the lower seat is provided with a lower vacuum groove, and the bottom surface of the front side of the upper cover is provided with an upper vacuum groove corresponding to the lower vacuum groove. When vacuuming, the upper cover and the lower seat are locked by an automatic locking mechanism, so that the corresponding contour edges of the upper vacuum groove and the lower vacuum groove are relatively pressed and sealed to form a vacuum chamber. Generally, the suction end of the vacuum pump is connected to the lower vacuum groove. The bag mouth of the vacuum packaging bag is placed in the vacuum chamber and the upper cover and the lower seat are pressed tightly to start the vacuum pump to evacuate the vacuum chamber to achieve vacuuming. After the vacuuming is completed After emptying, since the vacuum chamber is under negative pressure, the upper cover cannot be opened after the automatic locking mechanism is opened. The vacuum chamber needs to be depressurized before the upper cover can be opened. Generally, an exhaust pipe is opened in the vacuum chamber, and a solenoid valve is added to the exhaust pipe. The solenoid valve is opened or closed by the control circuit to connect or isolate the vacuum chamber from the atmosphere to achieve pressure relief and vacuuming. This pressure relief structure is complex and costly, and the switching force of the solenoid valve is limited. When the negative pressure in the vacuum chamber is too large, the general small solenoid valve cannot be opened, and a larger solenoid valve needs to be replaced, which occupies more space and causes the vacuum sealing machine to be too large. Therefore, it is necessary to improve it.

[0004] Therefore, how to overcome the above-mentioned defects has become an important issue to be solved urgently by those skilled in the art. Utility Model Content

[0005] The utility model overcomes the deficiencies of the above technologies and provides a vacuum fresh-keeping sealing machine. The pressure relief mechanism of the sealing machine has a simple structure, low cost, high reliability and large pressure relief strength.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A vacuum fresh-keeping sealing machine comprises: an upper cover, a lower seat hinged to the rear side of the upper cover, a vacuum chamber is provided between the upper cover and the lower seat, the upper cover and / or the lower seat are provided with a vacuum device, the vacuum device is connected to the vacuum chamber via an air pipe, the upper cover and / or the lower seat are provided with a control circuit board, the vacuum device is electrically connected to the control circuit board, a heat sealing assembly electrically connected to the control circuit board is provided on the front side of the upper cover and / or the lower seat, a pressure relief port is provided on the vacuum chamber or the air pipe, a pressure relief mechanism is provided on the upper cover and / or the lower seat, and the pressure relief mechanism is sealed with the pressure relief port.

[0008] Preferably, the pressure relief mechanism as described above includes a support rod arranged on the lower seat, a shift rod arranged on the support rod, a ring provided at the middle part of the shift rod, the ring is sleeved on the support rod, a pressure plate is provided at one end of the shift rod, a sealing gasket is provided on the pressure plate, the sealing gasket can tightly press and block the pressure relief port, a handle is provided at the other end of the shift rod, and a return spring is provided between the pressure plate and the lower seat, the sealing gasket is sealed with the pressure relief port when the sealing gasket is pressed against the pressure relief port, and the pressure relief port is connected to the outside atmosphere when the sealing gasket is separated from the pressure relief port.

[0009] Preferably, as mentioned above, a sleeve is provided on the outer side of the support rod, and a limiting notch is provided on the sleeve.

[0010] Preferably, as described above, a first mounting post is provided on the pressure plate, a second mounting post is provided on the lower seat, one end of the return spring is connected to the first mounting post, and the other end of the return spring is connected to the second mounting post.

[0011] Preferably, as mentioned above, a magnetic connection device is provided on the front side of the upper cover and / or the lower seat, and the magnetic connection device includes an upper magnet provided on the upper cover and a lower magnet provided on the lower seat.

[0012] Preferably, as described above, the upper magnets are two bar magnets, and the lower magnets are two bar magnets.

[0013] Preferably, the bottom surface of the front side of the upper cover is recessed upward to form an upper vacuum groove, and the top surface of the front side of the lower seat is recessed downward to form a lower vacuum groove corresponding to the upper vacuum groove, and a circle of elastic sealing ring is installed on the outer edge of the upper vacuum groove and / or the lower vacuum groove, and the upper vacuum groove and the lower vacuum groove form the sealed vacuum chamber through the elastic sealing ring that abuts against each other.

[0014] Preferably, a vacuum nozzle is provided at the bottom of the lower vacuum tank.

[0015] Preferably, a water collecting box is provided in the lower vacuum tank, and the water collecting box is detachably arranged in the lower vacuum tank.

[0016] Preferably, a backflow prevention member is provided on the water collecting box.

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

[0018] 1. The utility model provides a vacuum fresh-keeping sealing machine. After adopting the above structure, a pressure relief port is opened in the vacuum chamber, and a pressure relief mechanism for blocking the pressure relief port is provided on the side of the lower seat, so that the pressure relief port is closed or opened to achieve pressure relief in the vacuum chamber. No solenoid valve is required, which reduces costs, simplifies the pressure relief structure, and reduces the size of the vacuum sealing machine. The pressure relief port is blocked or opened by manually toggling the pressure relief lever, which has high reliability and large pressure relief.

[0019] 2. The utility model provides a vacuum fresh-keeping sealing machine, in which a magnetic connection device is provided on the front side of the upper cover and / or the lower seat to facilitate the suction between the upper cover and the lower seat, so that when the vacuum fresh-keeping sealing machine is not working, the upper cover and the lower seat remain in a closed state, preventing external dust from contaminating the interior of the sealing machine and keeping it clean.

[0020] 3. The utility model provides a vacuum fresh-keeping sealing machine. A water collecting box is provided in the lower vacuum tank. The water on the wet vegetables and fruits can be collected in the water collecting box during the vacuuming process. When the water collecting box is about to be full, the user can take the water collecting box out of the lower vacuum tank, pour out the water and put it back into the lower vacuum tank to prevent the water from wetting the internal parts of the sealing machine and ensure the normal operation of the vacuuming of the sealing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional view of the present utility model.

[0022] Figure 2 This is one of the exploded views of the present invention.

[0023] Figure 3 This is the second exploded view of the present invention.

[0024] Figure 4 This is the third exploded view of the present invention.

[0025] Figure 5 This is the fourth exploded view of the present invention. DETAILED DESCRIPTION

[0026] The features of the present invention and other related features are further described in detail below through embodiments to facilitate understanding by those skilled in the art.

[0027] In this embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right", "left end", "above", "back", "middle", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] like Figures 1 to 5 As shown, a vacuum fresh-keeping sealing machine is characterized in that it includes: an upper cover 1, a lower seat 2 hinged to the rear side of the upper cover 1, a vacuum chamber 3 is provided between the upper cover 1 and the lower seat 2, the upper cover 1 and / or the lower seat 2 are provided with a vacuum device 4, the vacuum device 4 is connected to the vacuum chamber 3 through an air pipe 5, the upper cover 1 and / or the lower seat 2 are provided with a control circuit board 6, the vacuum device 4 and the control circuit board 6 are electrically connected, the upper cover 1 and / or the lower seat 2 are provided with a heat sealing component 7 electrically connected to the control circuit board 6, the vacuum chamber 3 or A pressure relief port 301 is provided on the air pipe 5, and a pressure relief mechanism 8 is provided on the upper cover 1 and / or the lower seat 2. The pressure relief mechanism 8 is sealed with the pressure relief port 301. The utility model provides a vacuum fresh-keeping sealing machine. After adopting the above structure, a pressure relief port is provided in the vacuum chamber, and a pressure relief mechanism for blocking the pressure relief port is provided on the side of the lower seat, so that the pressure relief port is closed or opened to achieve pressure relief of the vacuum chamber. No solenoid valve is required, which reduces the cost, simplifies the pressure relief structure, and reduces the size of the vacuum sealing machine. The pressure relief port is blocked or opened by manually turning the pressure relief lever, which has high reliability and large pressure relief.

[0029] like Figure 2 、 Figure 3As shown, in this embodiment, the pressure relief mechanism 8 includes a support rod 81 provided on the lower seat 2, a lever 82 provided on the support rod 81, a collar 821 provided in the middle of the lever 82, the collar 821 is sleeved on the support rod 81, a pressure plate 822 is provided at one end of the lever 82, a sealing gasket 823 is provided on the pressure plate 822, the sealing gasket 823 can be tightly pressed to block the pressure relief port 301, a handle 824 is provided at the other end of the lever 82, a return spring 83 is provided between the pressure plate 822 and the lower seat 2, and the sealing gasket 823 is pressed against the pressure relief port 301, the sealing gasket 823 is sealed with the pressure relief port 301, and when the sealing gasket 823 is separated from the pressure relief port 301, the pressure relief port 301 is connected to the outside atmosphere. The utility model provides a vacuum fresh-keeping sealing machine. After adopting the above structure, the vacuum chamber is provided with a pressure relief port, and the side of the lower seat is provided with a pressure relief mechanism for blocking the pressure relief port, so that the pressure relief port is closed or opened to achieve pressure relief of the vacuum chamber. No solenoid valve is required, which reduces the cost, simplifies the pressure relief structure, and reduces the size of the vacuum sealing machine. The pressure relief port is blocked or opened by manually toggling the pressure relief lever, which has high reliability and large pressure relief.

[0030] like Figure 2 、 Figure 3 As shown, in this embodiment, a sleeve 826 is provided on the outside of the support rod 81, and a limiting notch 827 is provided on the sleeve 826. This arrangement enables the shifting rod 82 to rotate around the support rod 81 within a limited track range, thereby enhancing the reliability of the movement between the shifting rod 82 and the support rod 81.

[0031] like Figure 2 、 Figure 3 As shown, in this embodiment, a first mounting post 828 is provided on the pressure plate 822, and a second mounting post 829 is provided on the lower seat 2. One end of the return spring 83 is connected to the first mounting post 828, and the other end of the return spring 83 is connected to the second mounting post 829. This arrangement facilitates the installation and fixation of the return spring 83. When the sealing machine is working, the sealing gasket 823 is pressed against the pressure relief port 301 and the sealing gasket 823 is sealed with the pressure relief port 301; when the sealing machine is not working and the upper cover needs to be opened, the sealing gasket 823 is separated from the pressure relief port 301 and the pressure relief port 301 is connected to the outside atmosphere.

[0032] like Figure 4 、 Figure 5As shown, in this embodiment, a magnetic connecting device 9 is provided on the front side of the upper cover 1 and / or the lower seat 2, and the magnetic connecting device 9 includes an upper magnet 91 provided on the upper cover 1 and a lower magnet 92 provided on the lower seat 2. The utility model provides a vacuum fresh-keeping sealing machine, and a magnetic connecting device is provided on the front side of the upper cover and / or the lower seat to facilitate the attraction between the upper cover and the lower seat, so that when the vacuum fresh-keeping sealing machine is not working, the upper cover and the lower seat remain in a closed state, preventing external dust from contaminating the interior of the sealing machine and keeping it clean.

[0033] like Figure 4 、 Figure 5 As shown, in this embodiment, the upper magnets 91 are two bar magnets, and the lower magnets 92 are two bar magnets. The utility model provides a vacuum fresh-keeping sealing machine, and a magnetic connection device is provided on the front side of the upper cover and / or the lower seat to facilitate the attraction between the upper cover and the lower seat, so that when the vacuum fresh-keeping sealing machine is not working, the upper cover and the lower seat remain in a closed state, preventing external dust from contaminating the interior of the sealing machine and keeping it clean.

[0034] like Figure 4 、 Figure 5 As shown, in this embodiment, the bottom surface of the front side of the upper cover 1 is recessed upward to form an upper vacuum groove 31, and the top surface of the front side of the lower seat 2 is recessed downward to form a lower vacuum groove 32 corresponding to the upper vacuum groove 31. A circle of elastic sealing ring 33 is installed on the outer edge of the upper vacuum groove 31 and / or the lower vacuum groove 32. The upper vacuum groove 31 and the lower vacuum groove 32 form the sealed vacuum chamber 3 through the elastic sealing ring 33 that abuts against each other.

[0035] like Figure 4 、 Figure 5 As shown, in this embodiment, a vacuum nozzle 34 is provided at the bottom of the lower vacuum groove 32 , and the vacuum nozzle 34 is connected to the vacuum device 4 through a vacuum pipe, so as to facilitate the vacuuming of the vacuum chamber 3 .

[0036] like Figure 4 、 Figure 5 As shown, in this embodiment, a water collecting box 35 is provided in the lower vacuum tank 32, and the water collecting box 35 is detachably arranged in the lower vacuum tank 32. The utility model provides a vacuum fresh-keeping sealing machine, in which a water collecting box is provided in the lower vacuum tank, which can collect water on wet vegetables and fruits in the water collecting box during the vacuuming process. When the water collecting box is about to be full, the user can take the water collecting box out of the lower vacuum tank, pour out the water and put it back into the lower vacuum tank to prevent the water from wetting the internal parts of the sealing machine, thereby ensuring the normal operation of the vacuuming of the sealing machine.

[0037] like Figure 4 、 Figure 5As shown, in this embodiment, the water collecting box 35 is provided with a backstop 351, and the backstop 351 is preferably sheet-shaped. A plurality of sheet-shaped backstops 351 are evenly arranged on the upper edge of the water collecting box 35. Its function is to prevent the vacuum packaging bag from being placed too far, so that the bag mouth of the vacuum packaging bag is in the vacuum chamber 3.

[0038] The above are only typical embodiments of the present invention. In addition, the present invention may have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A vacuum fresh-keeping sealing machine, characterized in that: include: An upper cover (1), a lower seat (2) hinged to the rear side of the upper cover (1), a vacuum chamber (3) being provided between the upper cover (1) and the lower seat (2), a vacuum device (4) being provided on the upper cover (1) and / or the lower seat (2), the vacuum device (4) being connected to the vacuum chamber (3) via an air pipe (5), a control circuit board (6) being provided on the upper cover (1) and / or the lower seat (2), the vacuum device (4) being electrically connected to the control circuit board (6), a heat sealing component (7) being electrically connected to the control circuit board (6) being provided on the front side of the upper cover (1) and / or the lower seat (2), a pressure relief port (301) being provided on the vacuum chamber (3) or the air pipe (5), a pressure relief mechanism (8) being provided on the upper cover (1) and / or the lower seat (2), the pressure relief mechanism (8) being in sealing cooperation with the pressure relief port (301).

2. The vacuum fresh-keeping sealing machine according to claim 1, characterized in that: The pressure relief mechanism (8) comprises a support rod (81) arranged on the lower seat (2), a lever (82) arranged on the support rod (81), a sleeve ring (821) being arranged at the middle part of the lever (82), the sleeve ring (821) being sleeved on the support rod (81), a pressure plate (822) being arranged at one end of the lever (82), a sealing gasket (823) being arranged on the pressure plate (822), the sealing gasket (823) being capable of tightly pressing and blocking the pressure relief port (301), a handle (824) being arranged at the other end of the lever (82), a return spring (83) being arranged between the pressure plate (822) and the lower seat (2), the sealing gasket (823) being sealed and matched with the pressure relief port (301) when the sealing gasket (823) is pressed against the pressure relief port (301), and the pressure relief port (301) is connected to the outside atmosphere when the sealing gasket (823) is separated from the pressure relief port (301).

3. The vacuum fresh-keeping sealing machine according to claim 2, characterized in that: A sleeve (826) is provided on the outer side of the support rod (81), and a limiting notch (827) is provided on the sleeve (826).

4. The vacuum fresh-keeping sealing machine according to claim 2, characterized in that: The pressure plate (822) is provided with a first mounting column (828), the lower seat (2) is provided with a second mounting column (829), one end of the return spring (83) is connected to the first mounting column (828), and the other end of the return spring (83) is connected to the second mounting column (829).

5. The vacuum fresh-keeping sealing machine according to claim 1, characterized in that: A magnetic connection device (9) is provided on the front side of the upper cover (1) and / or the lower seat (2), and the magnetic connection device (9) comprises an upper magnet (91) provided on the upper cover (1) and a lower magnet (92) provided on the lower seat (2).

6. The vacuum fresh-keeping sealing machine according to claim 5, characterized in that: The upper magnets (91) are two bar magnets, and the lower magnets (92) are two bar magnets.

7. The vacuum fresh-keeping sealing machine according to claim 1, characterized in that: The bottom surface of the front side of the upper cover (1) is recessed upward to form an upper vacuum groove (31), and the top surface of the front side of the lower seat (2) is recessed downward to form a lower vacuum groove (32) corresponding to the upper vacuum groove (31). An elastic sealing ring (33) is installed on the outer edge of the upper vacuum groove (31) and / or the lower vacuum groove (32). The upper vacuum groove (31) and the lower vacuum groove (32) form a sealed vacuum chamber (3) through the elastic sealing ring (33) that abuts against each other.

8. The vacuum fresh-keeping sealing machine according to claim 7, characterized in that: A vacuum nozzle (34) is provided at the bottom of the lower vacuum tank (32).

9. The vacuum fresh-keeping sealing machine according to claim 7 or 8, characterized in that: A water collecting box (35) is provided in the lower vacuum tank (32), and the water collecting box (35) is detachably arranged in the lower vacuum tank (32).

10. The vacuum fresh-keeping sealing machine according to claim 9, characterized in that: The water collecting box (35) is provided with a backflow prevention member (351).

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