The air in the vacuum bag can be pumped away, and the mouth of the plastic bag can be sealed tightly. Dream vacuum machine is suitable for all kinds of food and electronic products.
Chinese name: vacuum machine mbth: vacuum machine vacuum packaging, concept definition, classification, action mechanism, tea vacuum machine, maintenance, common problems, common faults, operation steps, categories, precautions for vacuum machine export, vacuum packaging concept definition vacuum packaging is to put food into a packaging bag, extract the gas from the packaging bag, and complete the sealing and date stamping procedures at one time after reaching a predetermined vacuum degree. Vacuum inflatable packaging puts food into a packaging bag. After the air in the packaging bag is pumped to a predetermined vacuum degree, nitrogen or other mixed gases are filled. Finally, the process of sealing and date stamping is completed at one time. The products used are full of gas, and the external vacuum machine (puffed food, bread, fish fillets and other products) mainly has some conditions conducive to preservation, such as pressure resistance, non-fragile, non-air leakage, preservation, keeping food dry and so on. Classification: 1. Internal vacuum machines are divided into: DZD-400/S single-chamber vacuum machine, DZD-400/2S double-chamber vacuum machine, DZD-500/2S double-chamber vacuum machine, DZD-600/2S double-chamber vacuum machine, desktop vacuum machine and tea vacuum packaging machine, which can be used for solid, liquid, powder and paste. 2. External vacuum pumps are mainly divided into VS-600 and VS-600A, and their grade configurations are: (1) relay+vacuum generator (2) relay+high-quality vacuum pump (3)PLC control+high-quality vacuum pump (4)PLC control+LCD screen+high-quality vacuum pump, which are widely used in the market. This machine is most suitable for oversized or specially shaped objects. Mechanism of Action The main function of vacuum packaging is to remove oxygen and various gases in the air, thus helping to prevent food from spoilage. Its principle is also relatively simple, because food mildew and corruption are mainly caused by the activities of microorganisms, and most microorganisms (such as molds and yeasts) need oxygen to survive. Vacuum packaging is the use of this principle, the oxygen in packaging bags and food cells, so that microorganisms lose their "living environment." Experiments show that when the oxygen concentration in the packaging bag is ≤ 65438 0%, the growth and reproduction speed of microorganisms will drop sharply, and when the oxygen concentration is ≤0.5%, most microorganisms will be inhibited and stop reproducing. (Note: Vacuum packaging can not inhibit the deterioration and discoloration of food caused by anaerobic bacteria and enzyme reaction, and it needs to be combined with other auxiliary methods, such as cold storage, quick freezing, dehydration, high-temperature sterilization, irradiation sterilization, microwave sterilization, salt curing, etc. In addition to inhibiting the growth and reproduction of microorganisms, vacuum deoxygenation also plays an important role in preventing food oxidation. Because there are a lot of unsaturated fatty acids in oil-based foods, which are oxidized by oxygen, the food tastes bad. In addition, oxidation will also cause the loss of vitamins A and C, and the unstable substances in food pigments will be blackened by oxygen. Therefore, deoxidation can effectively prevent food from deteriorating and maintain its color, aroma, taste and nutritional value. Has great commercial value. The main functions of vacuum inflatable packaging are not only the functions of oxygen removal, quality assurance and freshness preservation, but also the functions of pressure resistance, crushing resistance, gas resistance and freshness preservation, which can effectively maintain the original color, aroma, taste, shape and nutritional value of food for a long time. In addition, many foods are not suitable for vacuum packaging, so they must be packed by vacuum inflation. Such as fragile food, easy to agglomerate food, easy to deform and greasy food, food with sharp edges or hardness that will puncture the packaging bag, etc. After the food is inflated in vacuum, the inflation pressure in the packaging bag is greater than the atmospheric pressure outside the packaging bag, which can effectively prevent the food from being extruded and deformed without affecting the appearance and printing decoration of the packaging bag. Vacuum inflatable packaging is a single gas or a mixture of two or three gases filled with nitrogen, carbon dioxide and oxygen after vacuum. Its nitrogen gas is an inert gas, which plays the role of filling and keeps the bag at positive pressure, thus preventing the air outside the bag from entering the bag and protecting the food. Its carbon dioxide can be dissolved in various fats or water to generate weakly acidic carbonic acid, which has the activity of inhibiting microorganisms such as mold and spoilage bacteria. Its oxygen can inhibit the growth and reproduction of anaerobic bacteria, keep the freshness and color of fruits and vegetables, and the high concentration of oxygen can keep fresh meat bright red. How to choose a vacuum machine: 1 When buying equipment, choose the model first, which equipment is cost-effective with the equipment of its own packaging size. 2. Whether the output of the equipment and the strength of the vacuum machine conform to their own packaging. 3. Working requirements of vacuum machines, especially vacuum chambers. For example, whether the plexiglass cover and vacuum chamber work as smooth solder joints. As for vacuum pumps, vacuum machines generally have 20 pumps and 40 pumps, so the prices will be very different. 5. There is almost no quality market for vacuum machines, mainly service. Therefore, when buying equipment, although it is to buy things, we should have a good relationship with the sales staff. In this way, people will be more willing to work for you after serving. 6. Equipment manufacturers try to find medium-sized companies. Big companies don't pay attention to one of your small customers. Small companies can do well without strength. It's right to choose a company. 7. The price problem, don't ask the company with the highest price, your hard-earned money can't stand the toss, and it can't be the cheapest. There must be something fishy, and the middle price can be done. It really makes sense to pay the price to get what you want. 8. Devices are the same as mobile phones. Take care of it a little, handle it gently and keep it clean and dry. There is no problem in using it for 3-5 years. Of course, wearing parts are not counted. The working principle of tea vacuum machine is actually very simple. Principle of use and operation flow: After tea leaves are bagged, put the bags filled with tea leaves into forming boxes of different sizes as required, put the side to be opened on a vacuum heating rod, and press the seal with a batten. After this step is completed, the following requirements are needed: after setting the sealing time, vacuumizing time and nitrogen filling time, press the vacuum cover. After the vacuum machine starts the Li Han brand vacuum pump, the air in the vacuum chamber is exhausted. Secondly, the Li Han vacuum machine starts the nitrogen charging function, and nitrogen is charged. When the time is up, start heat sealing to firmly seal the product. After the whole action is completed, the vacuum cover will lift itself, and the operator can take out the packaged product and repeat this action. Troubleshooting causes and solutions of common maintenance problems: low vacuum degree: pump oil is polluted, too little or too thin. Clean the vacuum pump and replace it with new vacuum pump oil. The pumping time is too short: extend the pumping time. Clogged suction filter: clean or replace exhaust filter. Air leakage: turn off the power supply after evacuation, and check whether the solenoid valve, pipe joint, suction valve of vacuum pump and gasket around the workshop are air leakage. Noise: The vacuum pump coupling is worn or damaged, please replace it. The exhaust filter is blocked or installed incorrectly: clean or replace the exhaust filter and install it correctly. Where there is air leakage: check the solenoid valve for air leakage and eliminate it. Vacuum pump oil injection: the O-ring of the suction valve falls off, pull off the vacuum tube on the pump head, take off the suction nozzle, take out the compression spring and suction valve, gently stretch the O-ring several times, re-insert it into the groove, and then install it. Wear of rotating blades: replace rotating blades. Oil leakage of vacuum pump: the oil return valve is blocked. Remove the oil return valve and clean it (see the instructions for details). Loose oil window: after draining oil, remove the oil window and wrap it with raw material adhesive tape or thin plastic film. The vacuum pump has heavy oil smoke: the suction filter is blocked or polluted, so clean or replace the exhaust filter. Pump oil pollution: replace with new oil. Blockage of oil return valve: clean the oil return valve (see the instruction for details). No heating: the heating rod is burnt out and replaced. The heating time relay is burnt out (that is, the two lights are on at the same time when starting, and the Omron light is yellow): replace the time relay. Burn-out of heating wire: replace the heating wire and install it firmly. Poor contact of heating temperature belt control switch: repair or replace. The AC contactor for controlling heating is not reset: repair (blow off foreign matter with airflow) or replace. The heating transformer is broken: replace it. Heating does not stop: the heating time relay is in poor contact or burnt out, so adjust the contact between the time relay and the socket or replace it. Control heating AC contactor not to reset: repair or replace. Uneven sealing, lax sealing or non-sealing: the steel box is deformed, and the heating time and temperature of the steel box are improperly adjusted and properly adjusted. There are attachments on the heating cloth: gently scrape off the attachments with your nails. Pressurized solenoid valve does not act: clean or replace the solenoid valve. Damage to airbag: replace airbag. Damaged compressed air pipe: repair or replace. No deflation: the cooling time relay is damaged (in the electrical box). Replace time relay. Open circuit of exhaust valve pipeline: find and connect it. The bleeder valve is stuck or burned out: remove, clean or replace it. While heating, not heating: the unheated packaging bag batten is short-circuited with the heating device (generally short-circuited with the brazing sheet) to adjust the position of the brazing sheet or put the packaging bag batten aside. Pump rotation does not vacuum: the studio cover is not tight, so the studio cover is tight. Motor reversal: (be careful not to change the ground wire, the pattern wire is the ground wire) Safety break (indicator light is on): Change the safety of the same specification. Closing the lid doesn't work: there is no power supply. Check whether there is power supply. Travel switch does not act: adjust the travel switch pedal. Fuses are frequently blown: if there is a short circuit, find and eliminate it. Motor reversal time is too long: any two-phase power cord is installed interchangeably (except grounding wire). Clogged exhaust filter: clean or replace. Oil viscosity is too high: clean the pump and change the oil. Short circuit of paddle in fuse box: repair. Bagging: The pressure valve is broken or blocked. Replace or clean the pressure valve. Poor ventilation of pressurized gas path: dredge pressurized gas path. Common faults: air leakage: the pressure of external air source is too high, the pressure indication of external air source is ≤0.2MPa, and the charging nozzle is too large: reduce the charging nozzle. Wrinkling of seal: the charging nozzle is not fixed, so fix the charging nozzle. External air source pressure is high: the external air source pressure indication is ≤0.2MPa, and inflation is insufficient: the inflation pipeline is compressed, so adjust the inflation pipeline. Inflating time is too short: extend the inflating time (at least 15 seconds). Characteristics of food vacuum machine Food vacuum packaging machine has the functions of vacuumizing, sealing, printing and cooling at one time. It is suitable for vacuum packaging of food and medicine, aquatic products, chemical raw materials, electronic components and other products, and can prevent oxidative mildew, prevent corrosion and moisture, ensure quality and freshness, and extend the shelf life of products. Technical parameter model: 400 A power supply voltage: 220V 50Hz power: 1.5KW vacuum cavity size: 420X440X 1 15mm sealing length: 400X 10mm packaging speed: 1-4pec/ Min weight. 3, special electric heating arrangement, uniform heat distribution; 4. Small body and small floor space; 5. Parts imported from Taiwan Province, Japan and South Korea are adopted, and the performance is stable and reliable. Operation steps 1: Turn on the power supply: toggle the power supply selection switch as required, that is, the power supply indicator light is on. The power selection switch points to vacuum as vacuum seal, and points to vacuum inflation as vacuum inflation seal. 2. Put the plastic bag with articles in the vacuum chamber. The mouth of the bag is neatly placed on the heat sealing strip (if it is inflatable packaging, at least one nozzle must be inserted into the mouth of the bag). 3. Press the cover, and the air extraction (vacuum) indicator light on the panel will light up. When the vacuum pump starts pumping air, the cover will be automatically sucked. The vacuum knob can adjust the vacuum degree according to the packaging requirements. When adjusting, the scale should be from low to high and from small to large. 4. When the air extraction reaches the set time (i.e. the required vacuum degree), that is, when the air extraction is over, the air extraction indicator goes out and the inflation indicator lights up, indicating that inflation is started. The inflation knob can adjust the inflation time (that is, the inflation amount), in the same way as above. If inflation is not needed. Turn the power switch to the vacuum position, the program will automatically enter the vacuum packaging, and the inflation indicator light will go out. 5. When exhausting or inflating, the indicator light goes out and the heat sealing indicator light comes on, which means entering the sealing procedure. The panel is equipped with heat sealing time and temperature adjustment knobs to adapt to materials with different thicknesses. When adjusting the time and temperature, the rotation range should be small to prevent the heat sealing temperature from suddenly rising and burning the heat sealing parts. 6. When the set heat sealing time is reached, the heat sealing indicator light goes out, and the heat sealing is finished, that is, the vacuum chamber enters the atmosphere through the electromagnetic valve until the cover is automatically lifted, and the vacuum inflatable packaging process is completely finished to prepare for the next packaging cycle. Categories under vacuum machine: desktop vacuum machine, household vacuum machine, single-chamber vacuum machine, double-chamber vacuum machine, automatic vacuum machine, cylinder vacuum machine and external vacuum machine are all categories under vacuum machine. Matters needing attention at the outlet of vacuum machine
With the development of economic globalization, China is more closely connected with the world, so more and more goods from China are going to the international market, and the export of vacuum machines is no exception. This is a good example, but it is unfamiliar to people and enterprises who have just started the export industry. So what problems should vacuum packaging machine pay attention to when making exports?
1, voltage problem. This cannot be ignored. At present, the domestic voltages are mostly 220v and 380v, and the equipment produced uses these two voltages. Once exported abroad, this problem must be considered. If the exporting countries have special requirements, they must communicate with the manufacturers as soon as possible to avoid unnecessary troubles.
2. Wear-resistant parts. Any equipment has vulnerable parts, and vacuum packaging machine is no exception. When exporting these parts, users should buy more than those delivered by the manufacturer, so as to replace them in time later, avoid production delays and increase transportation costs.
3. Language problems of the console and instructions. This problem is also very important, which directly determines whether the user can operate the equipment normally. Therefore, when exporting, it is necessary to ensure that the language of the vacuum machine is acceptable to users in the exporting country.