Patent Application
20210403188
This application is based upon and claims priority to Chinese Patent Application No. 202021223451.9, filed on Jun. 29, 2020, the entire contents of which are incorporated herein by reference.
The present disclosure relates to a vacuum sealing machine, particularly, to a wet vacuum sealing device and a vacuum sealer.
Currently, when vacuum sealing wet food, the liquids in the vacuum bag are drawn back, causing the vacuum bag to fail to seal tight. During the vacuum sealing process, the pressure in the vacuum chamber of the sealing machine becomes less than the pressure in the vacuum bag, causing gas to flow from a high pressure side to a low pressure side, so as to achieve the purpose of vacuuming the bag. In this process, liquids, such as water and grease, in the bag will flow along with the gas into the sealing machine. The flowing liquids will pull the heat away from the sealing strip, resulting in a poor seal.
The present disclosure provides a wet vacuum sealing device and a vacuum sealer, which can effectively solve the above-mentioned issues.
The present disclosure provides the following solution.
A wet vacuum sealing device, comprises a vacuum chamber provided with a vacuum joint, a vacuum pump connected to the vacuum joint, a solenoid valve, in which outlets of the solenoid valve are respectively connected to the vacuum joint and the vacuum pump, and an inlet of the solenoid valve is connected to an outside to allow air exchange, a heat sealing module arranged on a side of the vacuum chamber, and a control module electrically connected to the vacuum pump, the solenoid valve, and the heat sealing module. When the vacuum pump vacuums the vacuum chamber for a predetermined period of time, the solenoid valve switches states to make an air pressure inside the vacuum chamber close to an atmospheric pressure of the outside.
As a further improvement, the solenoid valve is a normally closed solenoid valve.
As a further improvement, the wet vacuum sealing device further comprises an electronic pressure gauge connected to the vacuum chamber, and the electronic pressure gauge is electrically connected to the control module.
A vacuum sealer including a wet vacuum sealing device comprises the wet vacuum sealing device according to any one of the above items, and further comprises a sealer main body and an upper cover.
The present disclosure has the following effects. Since a solenoid valve is connected between the vacuum pump and the vacuum joint, when the value of the negative pressure in the vacuum chamber reaches a certain range, the solenoid valve changes state to allow air exchange between the vacuum chamber and the outside. By doing so, the gas and liquids in the vacuum bag stop flowing, thereby avoiding the liquids from taking away the heat of the heat sealing module and affecting the sealing quality of the vacuum bag. The present disclosure solves the problem of poor sealing effect caused by liquids in the vacuum bag, thereby improving the performance of the vacuum sealing machine.
In order to provide a clearer description of the technical scheme of the the present disclosure, the drawings used to illustrate the embodiments will be briefly described below. It should be understood that the drawings below merely show some of the embodiments of the present disclosure, and therefore should not be regarded as limits to the scope of the present disclosure. For those of ordinary skill in the art, other related drawings may be derived according to the drawings shown without any creative effort.
The designations of the parts in the drawings are listed below: 1. wet vacuum sealing device 11. vacuum chamber 111. vacuum joint 12. vacuum pump 13. solenoid valve 14. heat sealing module 2. sealer main body 3. upper cover.
In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are parts of, but not all of, the embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments derived by those of ordinary skills in the art without creative effort fall within the scope of protection of the present disclosure. Accordingly, the following detailed description of the embodiments of the present disclosure shown in the drawings is not intended to limit the scope of protection of the present disclosure, but merely to represent selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments derived by those of ordinary skills in the art without creative effort fall within the scope of protection of the present disclosure.
In the description of the present disclosure, the terms “first”, “second” are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a characteristic that is referred to by “first” and “second” may include, expressly or implicitly, one or more of the characteristics. In the description of the present disclosure, “many” means two or more unless otherwise expressly and specifically limited.
With reference to
The solenoid valve 13 is a normally closed solenoid valve 13. The wet vacuum sealing device 1 further includes an electronic pressure gauge (not shown in the drawings) connected to the vacuum chamber 11, and the electronic pressure gauge is electrically connected to the control module. The electronic pressure gauge can accurately measure the pressure value in the vacuum chamber 11 and so provides an optional way of setting the energization time of the vacuum pump 12. When the electronic pressure gauge reaches a set pressure value, the solenoid valve 13 switches from a closed state to an open state.
A vacuum sealer having a wet vacuum sealing device includes the wet vacuum sealing device 1, and further includes a sealer main body 2 and an upper cover 3.
The working principle of a vacuum sealer having a wet vacuum sealing device provided by the present disclosure is as follows.
The upper cover 3 is interlocked with the sealer main body 2 to start the vacuum sealing process. After the vacuum pump 12 starts to work, the negative pressure in the vacuum chamber 11 gradually rises. Since the pressure in the vacuum bag is higher than the pressure in the vacuum chamber 11, the gas in the vacuum bag flows to the vacuum chamber 11. After the vacuum pump 12 runs for a period of time, the solenoid valve 13 is energized, the solenoid valve 13 is then switched from a closed state to an open state, and the vacuum chamber 11 is connected to the outside atmosphere, so the pressure in the vacuum chamber 11 is close to the outside atmospheric pressure, and the gas and liquids in the vacuum bag will not flow into the vacuum chamber 11. Then, the sealing procedure is started, and the heat sealing module 14 heat-seals the mouth of the vacuum bag.
Alternatively, the pressure value in the vacuum chamber 11 can be measured by an electronic pressure gauge, and the solenoid valve 13 does not switch states until the pressure reaches the set value. The electronic pressure gauge can accurately measure the pressure value in the vacuum chamber 11, thereby providing an optional way of setting the energization time of the vacuum pump 12.
The above-described embodiments are alternative embodiments that are intended to illustrate rather than limit the present disclosure. Variations and changes may be made to the embodiments by those of ordinary skill in the art. Any change, substitution, improvement, etc., made without departing from the spirit and principle of the present disclosure as claimed should be considered as fall within the protection scope of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202021223451.9 | Jun 2020 | CN | national |
