Please introduce how to use the vacuum machine and what auxiliary equipment is needed

In general, a vacuum operation can be carried out without the need for auxiliary equipment. However, in the case of a can, an auxiliary device such as a vacuum tube may be required. Vacuum-packed products can generally extend the shelf life by 3-5 times.

The operation steps of using a vacuum machine to complete the packaging of food:

Plug it in. <>

Put the food that needs to be evacuated into the bag and place the mouth of the bag into the vacuum chamber.

Do not exceed three-quarters of the bag with food, smooth out the mouth of the bag.

4.Close the lid.

5.Lock the latch.

6.Select"dry matter".

7.Click on "Vacuum Sealing".

8.Automatically jump to the "seal".

9.Open the knob latch.

10.Open the lid and you're done.

The use of the vacuum machine is as follows:

1. Turn on the power supply. Toggle the power selector switch as needed, that is, the power indicator is on. The power selector switch points to vacuum for vacuum sealing, and points to vacuum inflation for vacuum inflation sealing.

2. Place the plastic bag containing the items in the vacuum chamber. The mouth of the bag is neatly placed on the heat seal (if it is an inflatable package, at least one nozzle should be inserted into the mouth of the bag).

3. Press down the cover, and the air extraction (vacuum) indicator light on the panel is on. Vacuum pump.

When the air is pumped, the lid is automatically sucked into the house, and the vacuum knob can adjust the vacuum level according to the packaging requirements.

When adjusting, the scale should be small from low to high.

4. When the pumping reaches the set time (i.e., the required vacuum), the pumping is over, the pumping indicator is extinguished, and the inflation indicator is on to indicate the start of inflation. The inflation knob adjusts the length of inflation time (i.e. how much it is inflated) in the same way as above. If you don't need to inflate.

Turn the power switch to the vacuum position, the program will automatically enter the vacuum packaging, and the inflatable indicator will be extinguished before it goes out.

5. When pumping or filling is completed, the indicator light will be extinguished, and the heat sealing indicator light will be on, that is, it will enter the sealing procedure, and the panel is equipped with a heat sealing time and temperature adjustment knob to adapt to different thick and thin materials, and when adjusting the time and temperature, the rotation amplitude should be small, so as to prevent the heat sealing temperature from suddenly increasing and burning out the heat sealing accessories.

6. When the set heat sealing time is reached, the heat sealing indicator light is extinguished, and the heat sealing is over, that is, the vacuum chamber enters the atmosphere through the solenoid valve until the cover is automatically lifted, and the vacuum inflatable packaging process is all over, ready for the next packaging cycle.

The vacuum machine is used as follows:

1. Put the food into the vacuum chamber: plug in the power supply before use, open the lid on it, put the food to be fresh-packed into the vacuum fresh-keeping bag, and put the bag with the food into the vacuum chamber flatly.

2. Adjust the humidity: make sure to put the bag into the vacuum chamber, put both hands on the left and right sides of the upper cover, come on one side, try not to press at the same time, hear the sound and then adjust the humidity according to the need, press the vacuum seal, and the machine will start pumping and sealing.

3. Cut off the power supply: When the work is completed, the pants machine will automatically stop running, press the exhaust buckles on the left and right sides, open the upper cover, and the vacuum packaging will be completed, which can cut off the power supply.

4. Convenient preservation: The vacuum fresh-keeping machine is suitable for the preservation and storage of all kinds of dry food and items, which greatly facilitates people's lives, and the operation steps are simple, easy to learn and easy to learn.

The vacuum machine is composed of vacuum pump, vacuum chamber, sealing strip, plexiglass plate cover, air bag, solenoid valve and other components, the main function of vacuum packaging is to remove oxygen and various gases in the air, so as to help prevent food deterioration and food oxidation.

Mechanism of action of vacuum machine

The main function of vacuum packaging is to remove oxygen and various gases in the air to help prevent food deterioration, and its principle is relatively simple, because food mildew and deterioration are mainly caused by the activities of microorganisms, and most microorganisms (such as molds and yeasts) need oxygen for survival, and vacuum packaging is to use this principle to extract the oxygen in the packaging bag and food cells, so that the particles lose the "living environment".

In addition to inhibiting the growth and reproduction of microorganisms, another important function of vacuum is to prevent food oxidation, because oil and fat foods contain a large number of unsaturated fatty acids, oxidized by the action of oxygen, so that food tastes and deteriorates, in addition, oxidation also causes vitamin A and C loss, food pigments in the unstable substances by the action of oxygen, so that the color darkens, therefore, oxygen removal can effectively prevent food deterioration, maintain its color, aroma, taste and nutritional value.

There are many kinds of equipment that generate vacuum, so I will share with you what I know.

1. Vacuum generator.

Vacuum generators are also called venturis.

It is a device that uses positive pressure air source to generate negative pressure, and is often used as an adsorption and handling of materials in conjunction with vacuum suction cups.

The principle of forming a vacuum is that when the air flow becomes coarse and thin, resulting in a large flow rate, a "vacuum zone" will be formed behind the side of the air flow, and when the vacuum zone is close to the material, it will have an adsorption effect on the material. Its characteristics are simple structure, easy to realize, the disadvantage is that the vacuum negative pressure formed is not large, the better vacuum negative pressure can reach several hundred pa, mainly used in absorbing samples, or common in life before the paint spraying, etc., is used in this principle.

The structure of the vacuum generator and the vacuum formation mechanism are shown in the figure below.

2. Vacuum pump.

A vacuum pump is a device or equipment that uses mechanical, physical or chemical methods to pump air to the pumped container to obtain vacuum. In layman's terms, it is a device that uses various methods to generate, improve and maintain a vacuum in an enclosed space.

Classification: According to its principle, it can be divided into two types, gas transfer pump and gas capture pump. Further down, it can be divided into many kinds, see the figure below.

Gas transfer pumps.

Also known as gas volumetric pump, the change of pressure caused by the change of volume in the pump chamber is realized, and then the gas is transported (the area with strong pressure delivers gas to the area with low pressure).

Personal understanding is like a common pumping bag in life. During the lifting of the pump handle, the volume inside the pump becomes larger, and the pressure decreases, which is more than atmospheric pressure.

small, and at this moment, the atmospheric pressure outside the cylinder is higher than the inside of the cylinder, at this time, the atmosphere will flow to the inside of the cylinder, so that the expansion of the volume realizes the inhalation; The process of pressing down the handle is that the volume is reduced, which is higher than the atmospheric pressure relative to the outside of the cylinder, and then, the gas inside the cylinder is transported to the outside of the cylinder to achieve exhaust.

Gas Capture Pumps.

Gas capture pumps condense gas to the active substrate at the right temperature.

, such as activated charcoal.

3 Manufacturers of vacuum pumps.

Domestic: Zhongke Scientific Instrument, Shenyang Scientific Instrument, Beiyi Youcheng, etc.

Abroad: Edwards, Ulvac, Agilent, Pfeiffer, etc.

I don't know what kind of vacuum machine the subject is asking, here is a (fresh world) household machine as an example:

Procedure: Plug in the power supply.

Put the food that needs to be vacuumed into the bag, put the bag mouth into the vacuum chamber and the food should not exceed three-quarters of the bag, and smooth the bag mouth.

4.Close the lid.

5.Lock the latch.

6.Select"dry matter".

7.Click on "Vacuum Sealing".

8.Automatically jump to the "seal".

9.Open the knob latch.

10.Open the lid and you're done.

According to the working principle, the vacuum packaging machine can be divided into: external vacuum packaging machine and internal vacuum packaging machine.

1.The external vacuum packaging machine is a roomless air nozzle structure, which packs the product into a bag and sets the vacuum sealing according to the program;

2.The internal vacuum packaging machine is to put the product into the vacuum chamber after bagging and put the opening edge of the bag on top of the sealing strip, close the transparent plexiglass cover, and vacuum seal according to the procedure.

The external vacuum packaging machine is suitable for vacuum packaging of electronics, semiconductors, LEDs and other products to prevent moisture and oxidation.

Internal vacuum packaging machine is widely used in food vacuum packaging.

Vacuum packaging machines can be divided into desktop vacuum packaging machines, floor vacuum packaging machines and vertical vacuum packaging machines according to the external form.

1.The desktop machine is small in size, suitable for use in smaller occasions, and has a stainless steel tray for easy product placement;

2.The floor-standing vacuum packaging machine has casters for easy movement and also has stainless steel trays;

3.Vertical vacuum packaging machine is suitable for vacuum packaging of products with heavy weight, large size and inconvenient tiling.

In short, the vacuum packaging machine is best selected according to your use, so as to reduce unnecessary trouble in the later stage, and another convenient function can be customized according to personal requirements. Now most of the domestic ones can fully meet the demand.

Vacuum equipment is a device for generating, improving and/or maintaining vacuum, including vacuum application equipment and vacuum acquisition equipment.

External vacuum packaging machine, internal vacuum packaging machine, single chamber vacuum packaging machine, double chamber vacuum packaging machine, desktop vacuum packaging machine, vertical vacuum packaging machine.