Tips for purchasing efficient coating machine
Those who have bought high-efficiency coating machines will find a strange phenomenon. The prices of various high-efficiency coating machines on the market are different, and the difference is still a little big. For cheap products, buyers are afraid to buy them and worry about quality problems; For those with high prices, buyers do not know how to explain to their superiors. They are always in trouble, and do not know how to select efficient coating machines. In fact, there is a certain knack for choosing this product. Under the premise of producing the same kind of coated tablets with the same specifications, the high efficiency coating machines of different manufacturers have different one-time product yield due to different coating pot structure (for example, some coating machines have 1 pot of rework for 10 pots of tablets, and some have 9 pots of rework for 10 pots of tablets), and the consumed bags
The amount of coating powder varies greatly, which also results in the difference in power and labor costs, making the coating production costs of products vary greatly. Under the premise of the same specifications, the same kind of special-shaped coated tablets or coated tablets with words are produced. The high efficiency coating machines of different manufacturers also have different degrees of wear on the surface of coated tablets due to the different structure of the coating pan and the flap, resulting in the same kind of coating products, and some manufacturers' high efficiency coating machines can not pack, However, some manufacturers' high-efficiency coating machines can be used (for example, when the State Drug Administration often samples erythromycin enteric-coated tablets for coating production, the technical details of the high-efficiency coating machine are required to be very high), so if a product that needs to be coated cannot be coated on the purchased high-efficiency coating machine, the economic losses will be greater.
Under the premise of the same equipment specification, the same batch of coated tablets are produced. The different production rates of the high-efficiency coating machines of different manufacturers make the different labor and power costs required to pack the same batch of tablets, resulting in serious differences in production costs. When we buy an efficient coating machine, we should not only look at what we said above, but also look at seven basic parameters. (1) The position of the spray gun, that is, the position of the zeroing spray gun in the coating roller, generally has two modes: the spray gun is facing the lower direction of the roller or the spray gun is facing a certain position on the inner wall of the roller. Generally speaking, this mode is very important to the coating quality, while the domestic mode is mainly the spray gun pointing at the lower position of the cylinder body.
(2) Spray speed, namely atomization amount, is the total amount of coating liquid (suspension) sprayed per unit time.
(3) The atomization pressure includes two concepts, namely, the pressure of mist generated by atomization gas and suspension at the nozzle and the pressure of atomization gas itself.
(4) The temperature of the air inlet is the temperature of the hot air used in the imported drum for Qianzao coated tablets.
(5) The total inlet air volume, that is, the air volume used for drying and penetrating the sheet bed in the inlet drum, is generally adjusted to be slightly larger than the inlet air volume, which can cause a slight negative pressure in the coating drum, so that the coating liquid can enter the sheet bed smoothly.
(6) The internal pressure of the coating cylinder, the pressure difference between the coating cylinder and the room, and the insufficient pressure difference causes the coating solution to be unable to be sucked into the tablet bed, and adhere to the surface of the tablet bed, the inlet, the inner wall of the cylinder, or the spray system; Too high pressure difference will bring excessive coating liquid into the tablet bed.
(7) As for the rotation speed of the coating drum, some theories believe that the rotation speed of the coating drum should be set to be constant according to experience. How on earth is to be discussed when we buy an efficient coating machine, we can not only blindly pursue the price, appearance, and other surface factors, but also need to comprehensively consider all the coating costs generated by the equipment in the process of product coating production. When purchasing equipment, we should shop around and consider the operation cost and price comprehensively, so that we can buy the ideal efficient coating machine.
Contact Person: Ms. Wei