A vacuum packaging machine

Abstract

The present disclosure provides a vacuum packaging machine, comprising an air pump (1), a heating seal and a first vacuum chamber (3), and also comprising a second vacuum chamber (8). The first vacuum chamber (3) and the second vacuum chamber (8) are sequentially arranged along the length direction (7) of the vacuum bag (6), and the bottom of the second vacuum chamber (8) is lower than the bottom of the first vacuum chamber (3). The second vacuum chamber (8) is used to preferentially vacuum the first vacuum chamber (3) so that the portion of the vacuum bag (6) located in the second vacuum chamber (8) expands to be close to or attached to the bottom of the second vacuum chamber (8). When the first vacuum chamber (3) is vacuumed, the liquid drawn from the vacuum bag (6) preferentially flows into the portion. The vacuum packaging machine can achieve that when vacuuming, the vacuum bag contains a certain amount of liquid, and most other parts of the vacuum bag are still exposed to the outside, and the size of the vacuum packaging machine does not need to be made very large.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum packaging devices, in particular to a vacuum packaging machine. Background Art

[0002] Vacuum packaging machines with smaller volume requirements (such as household models, or commonly used models) generally adopt a vacuum tank (vacuum chamber) structural design. The bag mouth of the vacuum bag is pressed into the vacuum tank for vacuum treatment. That is, commonly used models only need to place the bag mouth of the vacuum bag into the vacuum tank, and most other parts of the vacuum bag are still exposed to the outside, and the body part does not need to be made very large. The dehumidification function of the original products of this type of model can basically only extract relatively wet things. For example, users generally twist a wet towel that can no longer be wrung out of water by hand. Among the existing products, except for the chamber vacuum packaging machine (the chamber vacuum packaging machine needs to place the entire vacuum bag into the chamber when vacuuming and can extract liquid), other vacuum packaging machine products do not have the function of extracting liquid. The main problem is that when there is more than about 10ml of water in the vacuum bag, the water may be sucked into the vacuum tank. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the existing technology and propose a vacuum packaging machine that can ensure that when vacuuming, a certain amount of liquid is contained in the vacuum bag, and most other parts of the vacuum bag are still exposed to the outside, so that the vacuum packaging machine does not need to be made very large.

[0004] Compared with the prior art, the present invention proposes a vacuum packaging machine, including an air pump, a heating seal and a first vacuum chamber, the first vacuum chamber is provided with a first vacuum port, the first vacuum port is connected to the air pump, the first vacuum chamber is used to place the bag opening of the vacuum bag to vacuum the vacuum bag through the first vacuum port, the direction along the bottom of the vacuum bag to the bag opening of the vacuum bag is the length direction of the vacuum bag, and also includes a second vacuum chamber and a second vacuum port provided in the second vacuum chamber, the second vacuum port is connected to the air pump, the first vacuum chamber and the second vacuum chamber are arranged in sequence along the length direction of the vacuum bag, and the bottom of the second vacuum chamber is lower than the bottom of the first vacuum chamber, the second vacuum chamber is used to preferentially vacuum the first vacuum chamber so that the part of the vacuum bag located in the second vacuum chamber expands to approach or stick to the bottom of the second vacuum chamber, and when the first vacuum chamber is vacuumed, the liquid extracted from the vacuum bag preferentially flows into the said part.

[0005] In some embodiments, the first pumping chamber and the second pumping chamber are both rectangular in shape.

[0006] In some embodiments, the first vacuum chamber and the second vacuum chamber are arranged side by side and close to each other or side by side and close to each other along the length direction of the vacuum bag.

[0007] In some embodiments, there is only one air pump, which is connected to the first air pumping chamber and the second air pumping chamber through a three-way valve that can be opened and closed selectively, or includes a first valve and a second valve that are independent of each other. The air pump is connected to the first air pumping chamber through the first valve, and the air pump is connected to the second air pumping chamber through the second valve.

[0008] In some embodiments, the first vacuum chamber is provided with a first sealing ring, the second vacuum chamber is provided with a second sealing ring, and the top surface of the first sealing ring is flush with the top surface of the second sealing ring.

[0009] In some embodiments, a dimension of the second pumping chamber along the length direction is greater than a dimension of the first pumping chamber along the length direction.

[0010] In some embodiments, a dimension of the second pumping chamber along the length direction is twice or more than a dimension of the first pumping chamber along the length direction.

[0011] In some embodiments, the vacuum degree reached by evacuating the first pumping chamber is a first vacuum degree, and the vacuum degree reached by evacuating the second pumping chamber is a second vacuum degree, and the second vacuum degree is greater than the first vacuum degree.

[0012] After adopting the above structure, compared with the prior art, the present invention has the following advantages: the technical solution disclosed in the present invention includes two air-extraction chambers, and the two air-extraction chambers have different functions. The first air-extraction chamber is used to place the bag opening of the vacuum bag so as to exhaust the vacuum bag through the first air-extraction opening. The first air-extraction chamber and the second air-extraction chamber are sequentially arranged along the length direction of the vacuum bag, and the bottom of the second air-extraction chamber is lower than the bottom of the first air-extraction chamber. The second air-extraction chamber is used to preferentially exhaust the first air-extraction chamber so that the part of the vacuum bag located in the second air-extraction chamber expands to be close to or stick to the bottom of the second air-extraction chamber. After such a design, When the first vacuum chamber is evacuated, the liquid extracted from the vacuum bag flows into the above-mentioned part first. Since the second vacuum chamber is used to evacuate the first vacuum chamber first so that the part of the vacuum bag located in the second vacuum chamber expands to be close to or stick to the bottom of the second vacuum chamber, in the specific implementation process, the second vacuum chamber can be set to be evacuated to the second vacuum degree before the first vacuum chamber starts to be evacuated. This has the best effect and can avoid the liquid from flowing into the first vacuum chamber as much as possible. The first vacuum chamber is the vacuum tank in the prior art. In this way, the vacuum tank is always dry and will not be affected by the liquid.

[0013] In addition, it can be seen from the above that the technical solution of the present disclosure is different from both chamber vacuum packaging machines and commonly used models with smaller volumes. The technical solution of the present disclosure has the advantages of both, that is, when vacuuming, a certain amount of liquid can be contained in the vacuum bag, and most of the parts of the vacuum bag except for the parts in the first vacuum chamber and the second vacuum chamber are still exposed to the outside. Therefore, the body of the vacuum packaging machine of the technical solution of the present disclosure does not need to be made very large. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A top view of a vacuum bag.

[0015] Figure 2 This is a top view of a vacuum packaging machine with the upper cover removed.

[0016] Figure 3 This is a diagram of the device connections of a vacuum packaging machine from a side view.

[0017] Figure 4 This is a logic diagram of the control principle of a vacuum packaging machine.

[0018] Explanation of the accompanying drawings: 1-air pump, 2-heating wire, 3-first vacuum chamber, 4-first vacuum port, 5-first vacuum pipe, 6-vacuum bag, 7-length direction, 8-second vacuum chamber, 9-second vacuum port, 10-second vacuum pipe, 11-first valve, 12-second valve, 13-first sealing ring, 14-second sealing ring, 15-shell, 16-trachea, 17-bag opening, 18-upper cover. DETAILED DESCRIPTION

[0019] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0020] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention 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. Therefore, the above terms should not be understood as limiting the present invention.

[0021] like Figures 1 to 4The figure shows a vacuum packaging machine, including an air pump 1, a heating seal and a first air extraction chamber 3. The first air extraction chamber 3 is provided with a first air extraction port 4. The first air extraction port 4 is connected to the air pump 1 through a first air extraction pipe 5. The first air extraction chamber 3 is used to place the bag opening 17 of the vacuum bag 6 so as to extract air from the vacuum bag 6 through the first air extraction port 4. The direction from the bottom of the vacuum bag 6 to the bag opening 17 of the vacuum bag 6 is the length direction 7 of the vacuum bag 6. The machine also includes a second air extraction chamber 8 and a second air extraction port 9 provided in the second air extraction chamber 8. The second air extraction chamber 3 is used to place the bag opening 17 of the vacuum bag 6 so as to extract air from the vacuum bag 6 through the first air extraction port 4. The direction from the bottom of the vacuum bag 6 to the bag opening 17 of the vacuum bag 6 is the length direction 7 of the vacuum bag 6. Port 9 is connected to the air pump 1 via a second exhaust pipe 10. The first and second exhaust chambers 3 and 8 are sequentially arranged along the length 7 of the vacuum bag 6. The bottom of the second exhaust chamber 8 is lower than the bottom of the first exhaust chamber 3. The second exhaust chamber 8 is configured to preferentially evacuate the first exhaust chamber 3, causing the portion of the vacuum bag 6 located within the second exhaust chamber 8 to expand close to or contact the bottom of the second exhaust chamber 8. When the first exhaust chamber 3 is evacuated, the liquid drawn from the vacuum bag 6 preferentially flows into this portion. The air pump 1 and the heating seal (e.g., the heating wire 2) can utilize existing technologies and are not described in detail here.

[0022] In some embodiments, as Figure 2 As shown, the first vacuum chamber 3 and the second vacuum chamber 8 are both rectangular in shape.

[0023] In some embodiments, as Figure 2 、 3 As shown, in order to make the structure more compact and facilitate the reduction of the size of the vacuum packaging machine, the first vacuum chamber 3 and the second vacuum chamber 8 are arranged side by side close to each other or side by side next to each other along the length direction 7 of the vacuum bag 6.

[0024] In some embodiments, as Figure 3 As shown, the number of air pumps 1 is one, and the vacuum packaging machine includes a first valve 11 and a second valve 12 that are independent of each other. The air pump 1 is connected to the first vacuum chamber 3 via the first valve 11, and the air pump 1 is connected to the second vacuum chamber 8 via the second valve 12. The connection scheme uses an air pipe 16 to connect them to each other. With this design, the work can be completed using only one air pump 1, which helps to simplify the structure. Of course, the structure can be further simplified. For example, the air pump 1 is connected to the first vacuum chamber 3 and the second vacuum chamber 8 via a three-way valve that can be selectively opened and closed. The first valve 11, the second valve 12, and the three-way valve can all be solenoid valves.

[0025] In some embodiments, as Figure 2 、 3 As shown, the first vacuum chamber 3 is provided with a first sealing ring 13, and the second vacuum chamber 8 is provided with a second sealing ring 14. The top surface of the first sealing ring 13 is arranged flush with the top surface of the second sealing ring 14. With this design, when the upper cover 18 is placed on the housing 15, it is conducive to forming a relatively sealed first vacuum chamber 3 and second vacuum chamber 8.

[0026] In some embodiments, as Figure 2 、 3 As shown, the dimension of the second vacuum chamber 8 along the longitudinal direction 7 is greater than the dimension of the first vacuum chamber 3 along the longitudinal direction 7. With this design, the portion of the vacuum bag 6 located within the second vacuum chamber 8 has a greater length, which facilitates the collection of the liquid being pumped in. Preferably, the dimension of the second vacuum chamber 8 along the longitudinal direction 7 is twice or more the dimension of the first vacuum chamber 3 along the longitudinal direction 7.

[0027] In some embodiments, the first vacuum chamber 3 is evacuated to a first vacuum level, and the second vacuum chamber 8 is evacuated to a second vacuum level, which is greater than the first vacuum level. This design helps ensure that the portion of the vacuum bag 6 located in the second vacuum chamber 8 remains expanded and close to or adheres to the bottom of the second vacuum chamber 8 during evacuation of the first vacuum chamber 3.

[0028] like Figure 4 The figure shows a logic diagram of the control principle of a vacuum packaging machine, in which: Figure 4 The air pressure switches 1 and 2 are used as air pressure detection, that is, as sensors. The working principle and operation process of the disclosed solution can be operated as follows according to the logic diagram:

[0029] 1. Place the vacuum bag 6 across the second vacuum chamber 8, that is, place the vacuum bag 6 across the vacuum chamber 1, and place the bag opening 17 of the vacuum bag 6 in the first vacuum chamber 3, and pass through the heating wire 2. Close the machine cover 18, that is, the bag opening 17 of the vacuum bag 6 is placed on the vacuum chamber 2.

[0030] 2. After the function is started, the control board first sends a signal to control the solenoid valve 1 to open, solenoid valve 1 is the second valve 12, and the solenoid valve 2 is closed, solenoid valve 2 is the first valve 11. At this time, only the second vacuum chamber 8 is evacuated, and the vacuum is continuously evacuated to the second vacuum degree KP2. At this time, the vacuum degree of the second vacuum chamber 8 is low, while the vacuum degree in the vacuum bag 6 is still one atmospheric pressure, which causes the packaging bag in the second vacuum chamber 8 to bulge.

[0031] 3. After detecting that the second vacuum degree reaches KP1, the air pump 1 is turned off, and the control system sends a signal to close the solenoid valve 1 and open the solenoid valve 2, so that the vacuum degree of the second air extraction chamber 8 will not decrease. At this time, the control system sends a signal, and the air pump 1 starts running again. At this time, the vacuum degree is adjusted by modulating the power of the motor, and the vacuum is continuously pumped until the first air extraction chamber 3 reaches the first vacuum degree KP1, and KP1 < KP2. At this time, the vacuum bag 6 in the second air extraction chamber 8 is still in the state where the internal air pressure (KP1) < the external air pressure (KP2), so the pumped liquid will completely flow into the expanded vacuum bag 6.

[0032] 4. After reaching the first vacuum degree KP1, the control system issues a sealing command. At this time, the heating wire 2 works, and after heating is completed, the work ends.

[0033] When understanding the present disclosure, if necessary, the above structure can refer to other embodiments / attachments Figure 1 and it is understood that no further elaboration will be provided here.

[0034] The above are only the exemplary embodiments of the present invention. Therefore, all equivalent changes or modifications made according to the structures, features, and principles described in the protection scope of the present invention are included in the protection scope of the present invention.

Claims

1. A vacuum packaging machine, comprising an air pump (1), a heating seal and a first vacuum chamber (3), wherein the first vacuum chamber (3) is provided with a first vacuum port (4), the first vacuum port (4) being connected to the air pump (1), the first vacuum chamber (3) being used to place a bag opening (17) of a vacuum bag (6) so as to vacuum the vacuum bag (6) through the first vacuum port (4), the direction from the bottom of the vacuum bag (6) to the bag opening (17) of the vacuum bag (6) being the length direction (7) of the vacuum bag (6), and characterized in that: The vacuum bag (6) further comprises a second vacuum chamber (8) and a second vacuum port (9) provided in the second vacuum chamber (8), wherein the second vacuum port (9) is connected to the air pump (1), the second vacuum chamber (8) and the first vacuum chamber (3) are sequentially provided along the length direction (7) of the vacuum bag (6), and the bottom of the second vacuum chamber (8) is lower than the bottom of the first vacuum chamber (3), and the second vacuum chamber (8) is used to preferentially vacuum the first vacuum chamber (3) so that the portion of the vacuum bag (6) located in the second vacuum chamber (8) expands to be close to or attached to the bottom of the second vacuum chamber (8), and when the first vacuum chamber (3) is vacuumed, the liquid in the vacuum bag (6) preferentially flows into this portion; The vacuum bag (6) is divided into three parts, namely, a part of the vacuum bag (6) located at the bag opening (17) of the first vacuum chamber (3), a part of the vacuum bag (6) located in the second vacuum chamber (8), and a part of the vacuum bag (6) exposed to the outside; The vacuum degree reached by the first vacuum chamber (3) after being evacuated is a first vacuum degree, and the vacuum degree reached by the second vacuum chamber (8) after being evacuated is a second vacuum degree, which is greater than the first vacuum degree.

2. The vacuum packaging machine according to claim 1, wherein: The first air pumping chamber (3) and the second air pumping chamber (8) are both rectangular in shape.

3. The vacuum packaging machine according to claim 1 or 2, characterized in that: The first vacuum chamber (3) and the second vacuum chamber (8) are arranged side by side and close to each other or side by side and close to each other along the length direction (7) of the vacuum bag (6).

4. The vacuum packaging machine according to claim 1, wherein: The number of the air pump (1) is one, and the air pump (1) is connected to the first air pumping chamber (3) and the second air pumping chamber (8) through a three-way valve that can be selectively opened and closed, or includes a first valve (11) and a second valve (12) that are independent of each other. The air pump (1) is connected to the first air pumping chamber (3) through the first valve (11), and the air pump (1) is connected to the second air pumping chamber (8) through the second valve (12).

5. The vacuum packaging machine according to claim 1, wherein: The first air extraction chamber (3) is provided with a first sealing ring (13), and the second air extraction chamber (8) is provided with a second sealing ring (14). The top surface of the first sealing ring (13) is flush with the top surface of the second sealing ring (14).

6. The vacuum packaging machine according to claim 1, wherein: The size of the second vacuum chamber (8) along the length direction (7) is greater than the size of the first vacuum chamber (3) along the length direction (7).

7. The vacuum packaging machine according to claim 6, wherein: The size of the second vacuum chamber (8) along the longitudinal direction (7) is twice or more than twice the size of the first vacuum chamber (3) along the longitudinal direction (7).

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