来自AZ的真空包装机知识

真空包装机是一种非常流行的包装设备,用于去除包装中的空气,使包装内部获得“真空”环境,并通过热封使包装保持一定时间的“真空”状态。 食品工业是真空包装技术发挥作用的最重要领域。 在食品行业,真空包装可以有效延长食品的保质期,方便食品的储存、流通和销售。 真空包装技术在医疗器械的包装中也很常见,用于隔离和抑制细菌,保证医疗器械的无菌性能。 纺织行业也常采用真空包装技术对纺织品进行包装,以达到防潮、防虫和压缩产品体积的效果。

商用(工业级)真空包装机的用途非常广泛,我们有必要了解相关知识,包括机器的选购、安装、主要结构部件和工作流程等,如果您是真空包装机包装机专业人士或想联系我们了解相关信息,请跳过本文至 产品页面,其中列出了我们提供的真空包装机的详细信息。

真空包装机

There are many types of vacuum packaging machines. In terms of machine structure and workflow, semi-automatic and fully automatic vacuum packaging machines are completely different. In this article, we will take the 双室真空包装机 as an example to present the knowledges of the semi-automatic vacuum packing machines. Please understand the following contents are for reference only, machines from different manufacturers might be different in many ways.

如何选购真空包装机

1. 确定真空包装是否是您产品的正确包装方法。 不要真空包装未经预处理的新鲜蔬菜和水果,因为无氧呼吸会加速腐败。 粉末产品需要专门设计的真空包装机。 酥脆的产品需要充氮气,防止挤压和粉碎。 熟肉和熟食在真空包装后需要灭菌。

2.了解产品尺寸和包装尺寸。 半自动真空包装机用于将产品包装在预制真空袋中。 明确真空袋尺寸和包装尺寸(长*宽*高,产品装入袋后)以确定真空包装机尺寸很重要。

3.包装生产率要求(包/小时)。 您可能需要一台小型机器来降低生产率,或者需要更大的机器来提高生产率,甚至可能需要多套更大的机器。 真空包装机的生产率取决于包装尺寸和机器尺寸。

4、找一家专业的真空包装机制造商和供应商。 好处:

  • 您将从专业供应商处获得专业建议
  • 保证机器质量
  • 直接沟通,快速解答问题,节省时间和精力
  • 有保障的售后服务
  • 更多优化机器的选项,灵活的设计
  • 机器质量与价格的完美结合

5. 向机器供应商提供相关信息以获得报价:

  • 包装什么产品
  • 产品尺寸
  • 包装尺寸
  • 真空包装前后的产品状态
  • 生产力要求
  • 真空袋使用规格
  • 本地电源
  • 付款方式及送货方式

6.洽谈价格和条款,签订合同,付款并等待接收真空包装机。

如何选购真空包装机

真空包装机的安装

收到购买的真空包装机后,首先应检查外包装盒是否有破损。 如果是这样,您需要先拍照与卖家沟通解决问题。 我们通常使用坚固的免熏蒸木箱来包装真空包装机,以确保机器不会损坏。 但在极端情况下,如果机器损坏,应立即联系卖家。 一般在发货时,卖家都会购买海上保险,以确保货物的损失得到赔偿。

如果一切顺利,下一步就是安装。

  • 真空包装机应安装在平坦、坚实、干净的地面上,固定牢固。
  • 真空包装机的工作环境要有适宜的温度、低湿度、低盐分,以减少机器被腐蚀的概率。 机器虽然采用了耐腐蚀的SUS304材质,但是电器部分比较容易生锈。 对于湿度和盐分较高的鱼类和海鲜加工设施,强烈建议准备干燥设备,以降低空气中的水分和盐分含量,以延长真空包装机的使用寿命。
  • 电源连接。 商用真空包装机通常需要三相电。 世界上最常用的三相电电压为3V、3V、220V、380V、400/415Hz。 确保您的供应商已根据您当地的电源规格定制了电气部件。
  • Cooling water connection. This is only applied to the belt-type continuous vacuum packaging machines. The cooling water must be clean and able to cool down the temperature of heating elements after each heat-seal cycle is completed.
商用真空包装机

Working process of (double chamber) vacuum packaging machine

Step 1, Preset vacuum time, heat-seal time, cooling time, heating temperature from the control panel. The value of these parameters shall be set according to vacuum chamber volume, vacuum pouch material and thickness.

Step 2, Put the products into 预制真空袋, make sure the cleaness of the bag’s sealing area, avoid oil and water contamination to ensure the sealing strength and prevent leakage. Different food products require vacuum pouches made of different materials, check 本文 以供参考。

Vacuum packaging first step put products into the premade vacuum pouches

Step 3, Put the vacuum pouches onto the working plate of vacuum packaging machine, sealing area of vacuum pouches right on the silicone strip, use the metal bar to press the sealing area.

双室真空包装机

Step 4, Vacuum and seal. Press the vacuum chamber cover for 2-3 seconds (for double chamber vacuum packaging machines with automatic chamber cover swing function, it’s not necessary to press the chamber cover manually), 限位开关 will be triggered to start the vacuum pump automatically. The air in the vacuum chamber as well as in vacuum pouches will be evacuated, vacuum meter will show the real-time vacuum degree. The vacuum and seal step details:

  1. Vacuum. Meanwhile the heating wire is heated
  2. When the vacuum period reaches the preset vacuum time, vacuum pump stops working
  3. Air bag inflates to push the heating element (heating wire, heating isolation cloth) down to press the sealing area of vacuum pouches. The vacuum pouches are heated and sealed for a few seconds
双室真空包装机

Step 5, Magnetic valve opens to allow air flow back into the vacuum chamber, heating element bouce back to position, vacuum chamber cover slightly bounces up automatically

Step 6, Repeat the cycle in another vacuum chamber

Main components of vacuum packaging machine

1. The vacuum chamber. The bottom part of vacuum chamber is the working plate, which is fixed. The bottom vacuum chamber is the chamber cover, which swings alternatively between the 2 sides of the double chamber vacuum packing machine. There is a silicone sealing gasket mounted in the side groove of the chamber cover to prevent air leakage during vacuum process.

It’s important to make sure the vacuum chamber is strong enough to resist the powerful negative pressure during vacuum pump works to evacuate air. So vacuum chamber usually is made of SUS304 stainless steel 3-4 mm, reinforced construction prevents deformation caused by negative pressure.

silicone sealing gasket of vacuum packing machine
The silicone sealing gasket of a single chamber vacuum packing machine

2. The vacuum chamber cover open, move and balancing facility. The chamber cover of double chamber vacuum packing machine moves from one side to another during each packaging cycle, with the help of 4 connection rods. The four connecting rods are fixed on two long shafts, and there are tension spring shift forks on the long shafts. The lower part of the two tension springs is positioned on the frame, and the upper part is positioned on the tension spring shift forks to balance the operation gravity. The two long shafts are positioned by two sets of bearing seats, and the upper parts of the four connecting rods are also inlaid with miniature bearings, so the left and right displacement is very easy. When the vacuum is started, a little pressure is applied, and it can be opened automatically after the air return is completed. The four connecting rods supporting the displacement of the upper vacuum chamber, the front and rear two on each long axis must be kept parallel, and the left and right two sets of connecting rods must also be relatively parallel to ensure that the upper vacuum chamber is the same as the lower vacuum chamber at any position on the left or right. Keep parallel, otherwise, the upper and lower vacuum chambers cannot be kept parallel, and the operating pressure will increase significantly, and even the vacuum cannot be established normally in severe cases.

connecting rods of double chamber vacuum packaging machine
Connecting rods of double chamber vacuum packaging machine

3. Heat-sealing and printing devices. Heating assembly is composed of a phenolic rod to support the whole heating system, a sealing wire (nichrome) for heating and sealing, a PTFE cloth to prevent vacuum bags burning, a airbag to press sealing wire, and other devices to install and fix the elements. Heating assembly is installed on the top vacuum chamber cover. For printing, there are molds for characters (numbers and alphabets) that can be installed in the silicone stripes.

vacuum packaging machine heating sealing assembly
vacuum packaging machine heating sealing assembly
sealing wire for vacuum packaging machine
PTFE heating isolation cloth for vacuum packaging machine
air bag of vacuum packaging machine
vacuum packaging machine silicone sealing strips

4. 真空系统. The vacuum system of double chamber vacuum packaging machine includes vacuum pump, vacuum meter, magnetic valves, and vacuum pipes. Vacuum system is the heart part of a vacuum packing machine, it’s important to use powerful and durable 真空泵. We usually use China top brand vacuum pump or Busch vacuum pump. 真空计 indicates the vacuum degree of vacuum chamber in real time so you can check the vacuum status any time. Two vacuum magnetic valves are usually used, one is a ¢5 two-position three-way magnetic valve, and its main function is to control the work of the upper and lower positions of the hot-press sealing device. The other is a ¢15 two-position two-way magnetic valve. Its main function is to open the passage after vacuum and heat sealing, so that the atmosphere returns to the vacuum chamber, otherwise the vacuum chamber cannot be opened.

Busch vacuum pump used on our vacuum packaging machines
Busch R5-RA0100F is usually used on small-medium vacuum packaging machines, including LDZ600/2S, LDZ700/2S

5. Electrics, including time relays, transformers, and contactors. We can also supply vacuum packaging machine with PLC and touch screen control upon request.

6. Vacuum packaging machine frame construction. Most industrial-grade vacuum packing machines are designed to stand on floor, so a solid frame construction is important to support the whole system for very long time (5-10 years). The frame and base shall be made of reinforced SUS304 stainless steel, and sturdy castors shall be equipped for each moving of the machine.

Daily maintenance of vacuum packaging machine

After we purchase a vacuum packing machine, we certainly want to use if for as long time as possible. The durability of a vacuum packaging machine is of course determined by it’s quality, but daily maintenance of also important. Effective maintenace can reduce machine downtime, prevent unpredictable failures, prolong machine’s service life.

  1. Vacuum packaging machine must be operated and maintained by trained person
  2. Clean vacuum packaging machine before and after each working shift
  3. Keep watching the oil level and oil color of vacuum pump from the observation window. If the oil level goes below the 1/3 part of the observation window, of color of oil goes black, you should refill oil or replace oil. Usually the vacuum pump oil shall be replaced after 500-2000 working hours, depending on the working environment.
  4. Lubricate the connection rod and springs periodically
  5. Keep an eye on sealing wires, PTFE heating isolation cloth and time relays

故障排除

The double chamber vacuum packaging machine is a conventional packaging equipment with a relatively simple structure, easy to use and maintain. Generally, problems can be solved by users themselves.

1. Vacuum pump doesn’t work/ loud noise

  • The power supply phase is missing or the fuse is broken. Solution: check the power supply line or replace the fuse.
  • The vacuum pump is reversed. Solution: power commutation.
  • The main contact point of the IC is in poor contact. Solution: adjust or replace it with a new one.
  • The ISJ normally closed contact is in poor contact. Solution: adjust or replace it with a new one.
  • The vacuum pump does not stop overtime. The reason is that the time relay does not work. Solution: repair or replace it.

2. Low vacuum degree or no vacuum

  • The vacuum pump oil is too little or polluted. Solution: add oil or change the oil.
  • The vacuum pump smokes or leaks. Solution: clean the vacuum pump, replace the exhaust filter, and check the back-pressure valve.
  • The vacuum pipe system is not sealed tightly. Solution: check the vacuum pipes, repair or replace leakage points.
  • The magnetic valve 2DT iron core is stuck and cannot be reset. Solution: overhaul or cleaning.
  • Bad quality vacuum pouches
  • Magnetic valve 1DT doesn’t work. Solution: Repair or replace

3. Not sealing or bad sealing quality

  • Sealing wire broken
  • Air bag broken
  • Inappropriate vacuum/sealing time
  • The heat sealing circuit is loose or broken.
  • The main contact of 2C is in poor contact
  • 2C doesn’t work

■ 询价 >>


WhatsApp/微信:+8618654721858


报价


请填入你的名字
您的公司名称
您的有效电子邮件地址
您用于 WhatsApp/WeChat 的手机号码
请详细告诉我们您的要求

扫一扫添加微信

联系亿德机械

扫描发送WhatsApp消息

联系亿德机械
滚动到顶部