What Is a Vacuum Sealer?

The vacuum sealing machine is to load food into the packaging bag, extract the air in the packaging bag, and reach the predetermined vacuum degree, then complete the sealing process. It can have the following functions: 1. Air extraction and sealing of the bag; 2. Seal the bag directly;

Vacuum sealing machine

The vacuum sealing machine is to put food into the packaging bag and extract the air in the packaging bag to achieve the predetermined

Vacuum sealing machine storage

Reasonable storage temperature and storage date of some foods without vacuum packaging in the refrigerator

Example of food packaged by vacuum sealer

Food types	Storage temperature ()	Save the date (days)
Fresh pork	-2 ~ 0	2 ~ 4
Beef and mutton	-2 ~ 5	2 ~ 3
Chicken and duck	-2 ~ 2	2
Various other poultry	-2 ~ 1	2
Fresh fish and shrimp	1 ~ 2	3
Ham and sausage	2 ~ 6	4 ~ 5
milk	2 ~ 5	5 ~ 6
Eggs	2 ~ 7	10
bean products	1 ~ 5	5 ~ 7
Spinach and Artemisia	1 ~ 8	3 ~ 7
cauliflower	1 ~ 8	3 ~ 7
Fresh Asparagus	1 ~ 8	3 ~ 7
Baby peas, lentils and vegetables	1 ~ 8	3 ~ 7
Green peas	1 ~ 8	3 ~ 7
Pumpkin dish	1 ~ 8	3 ~ 7
Fresh mushrooms, pine mushrooms, etc.	1 ~ 8	3 ~ 7
tomato	1 ~ 8	3 ~ 7
green vegetables	1 ~ 8	3 ~ 7
Pickled vegetables, etc.	1 ~ 5	3 ~ 7
Lemon cut	1 ~ 5	5 ~ 4
Apple (peeled)	1 ~ 5	2 ~ 3
Pineapple (sliced)	1 ~ 5	3 ~ 4

Reasonable shelf life after vacuum packaging

Food types	level	Save the date (days)
Fresh pork	freezing	30
Beef and mutton	freezing	30
Chicken and duck	freezing	30
Various other poultry	freezing	30
Fresh fish and shrimp	freezing	30
Ham and sausage	refrigeration	180
milk	refrigeration	15
Eggs	refrigeration	30-40
bean products	refrigeration	20-30
Spinach and Artemisia	refrigeration	30
cauliflower	refrigeration	45
Fresh Asparagus	refrigeration	30
Baby peas, lentils and vegetables	refrigeration	45
Green peas	refrigeration	45
Pumpkin dish	refrigeration	40
Fresh mushrooms, pine mushrooms, etc.	refrigeration	180
tomato	refrigeration	60
green vegetables	refrigeration	30
Pickled vegetables, etc.	refrigeration	180 or more
Lemon cut	refrigeration	30
Apple (peeled)	refrigeration	25 ~ 30
Pineapple (sliced)	refrigeration	25 ~ 30

Items (dried shiitake mushrooms, coffee, tobacco, laver, etc.) over one year

Medicinal materials (Chinese herbal medicine, tea, western medicine) more than one year

Others (bread, moon cakes, dried fruits, calligraphy and painting, decorations, video tapes, etc.) more than half a year

Precision hardware, electronic equipment, printed circuit board, within 5 years.

Vacuum sealing machine process

1. Vacuum: The vacuum chamber is closed, the vacuum pump is working, the vacuum chamber starts to evacuate, and the vacuum in the packaging bag is raised at the same time. The pointer of the vacuum gauge rises to the rated vacuum (controlled by the time relay ISJ). While the vacuum is working, the two-position three-way solenoid valve IDT works, heat-seals the vacuum chamber, and the hot-pressing frame remains in place.

2. Heat seal: The IDT is broken, and the outside atmosphere enters the heat seal air chamber through its upper air inlet. Using the pressure difference between the vacuum chamber and the heat seal air chamber, the heat seal air chamber is inflated and expanded to make it under the hot press. Move and hold the mouth of the bag; at the same time, the heat-sealing transformer works and starts to seal; at the same time, the time relay 2SJ works, and it will act after a few seconds, and the heat-sealing ends.

3. Air return: The two-position two-way solenoid valve 2DT is turned on, the atmosphere enters the vacuum chamber, the pointer of the vacuum gauge returns to zero, the hot pressing frame is reset by the reset spring, and the vacuum chamber is opened.

4. Circulation: Move the above vacuum chamber to another vacuum chamber, that is, enter the next working process, the left and right chambers work alternately, and reciprocate.

maintenance

The maintenance core of the vacuum sealing machine is the maintenance of the vacuum pump, so we call it the maintenance of the vacuum pump. Vacuum pump maintenance is divided into the following 6 points

Vacuum sealing machine (7 photos)

1.Replace the exhaust filter

If the pump temperature rises significantly, the motor current reaches or exceeds the rated current, and oil smoke is generated at the pump exhaust port, the exhaust filter should be checked for blockage. If it is blocked, it should be replaced in time. Available at the pump filler hole

Install exhaust pressure gauge and check if the filter is blocked. The exhaust filter can be replaced when the pressure exceeds 0.6 bar (gauge pressure).

2.Replace the vacuum pump oil and oil filter

If the oil is contaminated and blackened, emulsified or thickened, the oil should be changed in time. At the same time as the oil change, the oil filter should be replaced. And clean the pump before adding new oil.

Cleaning and oil change steps:

Stop the pump to let off the hot oil; screw on the drain plug and run for 5-10 seconds to drain the oil; inject the cleaning oil (No. 32 general mechanical oil) to 3/4 of the height of the oil window; 10 minutes; stop pump and drain oil

Off. If the drained oil is still relatively turbid and fails to meet the requirements, repeat steps 3 and 4 until the drained oil is transparent; turn on the drain plug and run for 5-10 seconds; drain the oil; fill in the specified new oil can.

3.Vacuum pump oil

XD, XQ series vacuum pumps should use the vacuum pump oil specified in the composite SH0528-92 standard. Use ISO- at ambient temperature between 0 10

Vacuum pump oil of VG32 viscosity grade. When the ambient temperature is between 10 40 , use ISO-VG100 viscosity grade vacuum pump oil (for original 1 #

Vacuum pump oil).

When the vacuum pump is running, the oil level must be kept at 1/2 ~ 3/4 of the height of the oil window. The oil level and oil contamination should be checked frequently (recommended every

Once a week).

4.Clean the suction filter

The suction filter should be kept clean to prevent the pumping speed from falling.

5.Storage

If the pump is left unused for a long period of time, drain the oil and clean the pump, then fill the specified new oil and place in a dry place.

6.Other

If you need to order maintenance spare parts, please inform the pump model and machine number can be found on the pump nameplate.

Because some maintenance and repair work requires certain expertise, equipment and special tools, please contact the manufacturer for details.

Ensure that the pump is free of oil during transportation. Do not hit oil pipes, oil filters, etc.