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What are the classifications of filling and packaging machinery?

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filling and packaging machinery refers to a machine that fills liquid materials into packaging containers in a predetermined amount. It can not only rely on self weight to flow at a certain speed to fill materials with low viscosity, but also rely on pressure to flow at a certain speed to fill some viscous materials or semi-liquid materials. The machine is mainly used for liquid filling of three categories of packaging containers, namely glass bottles, metal cans (including aluminum two-piece cans and tinplate three-piece cans) and plastic bottles. It is widely used in production
classification of filling and packaging machinery:
filling machinery has various forms due to different packaging containers, packaging materials and filling processes, and there are many classification methods. Common:
according to the measurement method, they are classified as level filling machine, quantitative filling machine and weighing filling machine
according to the filling method, it is classified into atmospheric pressure filling machine, negative pressure filling machine, isobaric filling machine and pressure filling machine
according to the transport form of packaging container, it is classified as linear filling machine and rotary filling machine
among them:
I. atmospheric pressure filling machine
a machine that fills liquid materials into packaging containers under atmospheric pressure. It is only suitable for filling liquid materials with low viscosity and no gas, such as milk, soy sauce and daily chemical products. It can adapt to packaging containers made of various materials, such as glass bottles, plastic bottles, metal cans, plastic bags and metal barrels. Quantitative volume, filling by gravity, small material loss. The normal pressure filling only needs an unsealed liquid storage tank. For the normal pressure filling machine whose container is not in contact with the filling valve, the electronic weighing filling machine can be used; For the atmospheric filling machine whose container is in contact with and sealed by the filling valve, the material level filling machine with exhaust control liquid level or quantitative filling machine such as quantitative cup and piston are often used
II. Negative pressure filling machine
negative pressure filling machine refers to a machine that first pumps air into the packaging container to form negative pressure, and then fills the liquid into the packaging container. According to different filling methods, negative pressure filling machines are divided into differential pressure negative pressure filling machines and gravity negative pressure filling machines
the vacuum degree during negative pressure filling should be adjusted properly, because too high vacuum degree may cause deformation of soft packaging (such as plastic bottles); If the vacuum is too low, the liquid and bubbles at the filling valve port and the wall of the exhaust pipe can not be sucked back, resulting in liquid leakage. The filling speed of the negative pressure filling machine is high, which can reduce the contact and effect between the liquid material and the residual air in the container, and is conducive to prolonging the shelf life of some liquid products. It is suitable for the filling of gas free liquid with good fluidity, beverages containing vitamins, toxic pesticides and chemical reagents
(I) differential pressure negative pressure filling machine
differential pressure negative pressure filling machine refers to a machine that is under normal pressure in the liquid storage box, only exhausts the packaging container to form negative pressure, and fills the liquid into the packaging container by relying on the pressure difference between the liquid storage box and the packaging container. The machine must separate the liquid storage tank from the vacuum gas chamber, mainly including two chambers (one liquid storage tank and one vacuum gas chamber) and three chambers (one liquid storage tank and two vacuum gas chambers) differential pressure filling machine
(II) gravity negative pressure filling machine
gravity negative pressure filling machine refers to the machine that exhausts the liquid storage tank and packaging container to form negative pressure, and the liquid is filled into the packaging container by self weight. This kind of machine can directly pump air into the liquid storage tank with a vacuum pump without setting another true air chamber
III. isobaric filling machine
isobaric filling machine refers to a machine that first inflates the packaging container, the internal gas pressure is equal to the gas pressure in the liquid storage cylinder, and then fills the liquid into the packaging container
IV. pressure filling machine
the most common form of pressure filling is that the product is pressurized and the overflow tank is connected with the atmosphere. The machine does not need bottle holder, uses bottle clamping pre positioning filling, and does not need liquid storage tank. Only there is a distributor on the filling turntable. One end of the distributor is connected to the water pump installed in the liquid storage tank, and the other end is connected to each filling valve with hose. An annular positioning ring is installed on the filling turntable, and the positioning ring is provided with arc positioning grooves equal to the number of filling valves. The center line of the positioning groove coincides with the center line of the valve. When the PET bottle is transported to the filling turntable, the bottle is pre positioned into the arc positioning groove with the bottleneck by the dial and hung on the annular positioning ring of the filling turntable. At this time, the center of the bottle mouth coincides with the center of the filling valve. The filling valve descends along the cam during the rotation of the filling turntable, seals with the opening of the filling container, and then opens the filling valve to start liquid feeding. The water pump in the liquid storage tank supplies liquid to the container through the distributor on the filling machine and fills the container until it is full; The gas in the bottle and the residual liquid after filling will be returned to the liquid storage tank through the air return (liquid) pipe. The liquid level height of the liquid in the filling container can be adjusted, which is determined by the volume of the valve tube extending into the bottle mouth
the pressure filling machine is mainly used for plastic bottle packaging of non aerated beverages (such as mineral water and purified water), condiments, pesticides and some low viscosity liquids. The full filling method is mainly adopted, that is, the liquid level is controlled by the volume of the valve tube extending into the bottle mouth, and its liquid level accuracy is high; The infusion bottle, bottle flushing, filling and sealing all adopt the bottleneck operation, which is not limited by the size or shape of the container, that is, the quality of the bottle (especially the thickness of the bottle wall) is not high, and the filling speed is fast, so it is very suitable for the production of large-scale water drinks.

generally speaking, filling machines belong to a category under packaging machines
filling machines are generally used for bottled goods; Packaging machines are generally bagged items.

filling machine and packaging machine belong to one category of packaging equipment

filling machine can be divided into liquid filling machine, paste filling machine and powder filling machine

banner

packaging machine is a large category, including filling machine, but also including sealing machine, labeling machine, capping machine, etc.

strictly speaking, there are two types of filling and packaging machines
one is filling machine
the other is packaging machine
filling machine is divided into liquid filling machine, powder filling machine and paste filling machine according to materials
filling machine is d
ivided into stainless steel pump filling machine, peristaltic pump filling machine and ceramic pump filling machine according to filling pump, There is also a kind of pump less quantitative filling machine

most of the packaging machines are used for external packaging, such as pillow packaging machine and bag packaging machine

according to the filling material of the filling machine, they are divided into tubes, bottles and other containers!

it is divided into oil, sauce, liquid, paste, powder and particle

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