Liquid filling machines can be divided into atmospheric filling machines, pressure filling machines and vacuum filling machines according to the filling principle.

　　1. Atmospheric pressure filling machine: It is filled by the weight of the liquid under atmospheric pressure. This type of filling machine is divided into two types: timed filling and constant volume filling. It is only suitable for filling low-viscosity and gas-free liquids such as milk and wine.

　　2. Pressure filling machine: filling is carried out at a pressure higher than atmospheric pressure, and can also be divided into two types: one is that the pressure in the liquid storage tank is equal to the pressure in the bottle, and the filling is carried out by the liquid flowing into the bottle by its own weight. , called isobaric filling; the other is that the pressure in the liquid storage tank is higher than the pressure in the bottle, and the liquid flows into the bottle by the pressure difference. This method is mostly used in high-speed production lines. The pressure filling machine is suitable for filling liquids containing gas, such as beer, soda, champagne, etc.

　　3. Vacuum filling machine: Filling is carried out when the pressure in the bottle is lower than the atmospheric pressure. This kind of filling machine has simple structure, high efficiency, and can adapt to a wide range of viscosity of materials, such as oil, syrup, fruit wine, etc.

　　4. Oil filling machine: It can fill all kinds of oil products, such as edible oil, lubricating oil, peanut oil, soybean oil, etc. This type of filling machine is a filling machine specially developed for oil material filling, which can realize flexible configuration of manual operation and unmanned operation.

　　5. Injection plug filling machine: This type of filling machine is widely used in medicine, food, daily chemical, grease, pesticide and other special industries. It can fill various liquid and paste products, such as disinfectant and hand sanitizer. , toothpaste, ointment, various cosmetics and other items.

　　6. Liquid filling machine: brand-new horizontal design, light and convenient, automatic material extraction, and hopper can be added for thicker paste.

　　7. Paste filling machine: It is suitable for filling various viscosity products from liquid to cream, and it is an ideal filling machine for the vast number of daily chemical, pharmaceutical, food, pesticide and other industries.

　　8. Sauce filling machine: suitable for viscous sauces with granules and high concentration in condiments, such as chili sauce, bean paste, peanut butter, sesame sauce, jam, butter hot pot base, red oil hot pot base and other substances filling. According to the operation process, it can be divided into automatic filling machine and semi-automatic filling machine.

　　9. Weighing filling machine: suitable for liquid materials with low viscosity. For example, paints, coatings, resins, and various chemical raw materials.

　　10. Granular slurry filling machine: suitable for medicine, daily chemical, food, pesticide and special industries, it is an ideal granular slurry viscosity fluid filling equipment.

　　11. Powder filling machine: This machine is suitable for quantitative filling of powdery and small granular materials in chemical, food, agriculture, by-products and other industries. Such as: pesticides, veterinary drugs, disinfectants, washing powder, grain, seeds, milk powder, condiments, monosodium glutamate, salt, sugar, additives, etc.