Low temperature vacuum dryer

Low temperature vacuum dryer

Low temperature continuous vacuum crawler dryer adopts new non-stick crawler material, multi-step temperature control, automatic vacuum degree adjustment and new structure. It has the characteristics of low energy consumption and little loss of volatile components. It can be used for drying solid or liquid materials, especially suitable for the application of pharmaceutical industry.

Vacuum belt dryer is a kind of contact vacuum drying equipment in the form of continuous feeding and discharging. The material liquid to be dried enters into the dryer with high vacuum directly through the conveying mechanism and is spread on several drying belts in the dryer. The special rubber roller driven by the motor drives the drying belt to move along the direction of the dryer barrel at a set speed. Three independent heating plates and a cooling plate are arranged under each drying belt. The drying belt is closely fitted with the heating plate and cooling plate to transfer the energy required for drying to the material by means of heat transfer contact. When the drying belt from one end of the cylinder to the other end of the movement, the material has been dry and after cooling, dry belt back, dry cake stripped from the drying belt, through an up and down movement of the guilt-cutting device, falling into the crushing device, crushed material through two airlock type hopper discharge. Because the material directly enters the high vacuum and gradually dries for a period of time (usually 30 to 60 minutes), the particles obtained after drying have a certain degree of crystallization effect. At the same time, from the perspective of microstructure, there are micropores inside. After being crushed directly to the required particle size, the fluidity of the particles is very good, which can be directly pressed or filled with capsules. At the same time, the particles have excellent instant solubility due to their microscopic loose structure. And particle appearance is good, for instant (powder) products, can greatly improve the grade of the product. The belt vacuum dryer feeds and discharges continuously at both ends of the fuselage.

► Scope of application:

For the vast majority of natural product extracts, can be applied. Especially for the material with high viscosity, easy clumping, thermoplastic and heat sensitivity, it is not suitable or unable to use spray drying, belt vacuum dryer is the best choice. Moreover, the concentrated extract can be directly sent to the belt vacuum dryer for drying without adding any auxiliary materials, which can reduce the dosage of the final product and improve the grade of the product. During the whole drying process, the product is in a vacuum and closed environment, and the drying process is mild (product temperature 40-60℃). For natural extract products, the color, fragrance and taste can be maintained to the maximum extent, and the final product of high quality can be obtained. The belt vacuum dryer can carry out CIP in-place cleaning completely. CIP in-place cleaning can be carried out very conveniently between batches and products, which makes the replacement of products very convenient, greatly reduces the labor intensity of workers, and also ensures the quality of products.

► Structure composition:

The dryer is mainly composed of an openable cover and cylindrical shell connected by double-sided hinges, a plurality of mirrors with lights installed on the shell, adjustable speed feeding pump, new non-stick track, track adjustable speed driving system, vacuum equipment, condenser, transverse swing feeding device, a group of automatic temperature control system, heating plate, collection and crushing device, collection tank, cleaning device, etc. The drying capacity and track area of low-temperature vacuum crawler dryer can be designed and manufactured according to needs, which can be achieved by increasing the number of track layers in the shell without changing the dryer shell. At the same time, it only needs to increase the displacement of vacuum equipment and the capacity of temperature control unit correspondingly, and the control system hardly needs to make any changes. Multi-layer low temperature vacuum crawler dryer is more beneficial to improve the economic efficiency and use benefit of the equipment.

► Features:

1. The running state and speed of the material belt can be controlled respectively

2. Feed pump can control its running state and feed speed respectively

3, the cloth motor cloth Angle, running speed can be stepless adjustment

4. The vacuum system adopts multistage Roots water ring vacuum pump unit

5, temperature control using regulating valve and digital sensing control technology to ensure that each section of the heating temperature constant temperature operation

6, automatic correction system, using closed-loop control to ensure that the material belt running off-center position is not more than ±0.5cm

7, the historical trend interface can save the user in the operation or after the end of the data (temperature pressure, etc.) and alarm records, convenient for users to observe the equipment operation history data at any time and can meet the user to print or fill in the report.

8. The signal alarm interface can monitor and display the faults in the operation of the system at any time, and prompt the fault causes and solutions. In order to ensure the stability of the system and the function of self-diagnosis, vacuum belt dryer to ensure the service life of the hardware.

9. The user authority of the interface ensures the safety and stability of the operation to a greater extent, and avoids the intervention of non-operators in the running state of the equipment.

10, all Chinese operation interface, with friendly and vivid visual image and graphics to indicate the equipment running state, the vacuum belt dryer operation is simple and clear.

11. All low-voltage electrical appliances of PLC man-machine interface converter are made of Schneider products, which further ensure the safety and stability of the vacuum belt dryer system.

12, PLC input and output point in the design with 30% margin, easy to expand and increase the control point. To meet the customer's future expansion space.

13, the heating system uses superhot water as the medium of heating form. Also according to customer requirements to provide steam heating, vacuum belt dryer heat conduction oil heating and direct electric heating plate heating and other heating methods.

14. The equipment is equipped with CIP automatic in-place cleaning system, which is clean, fast and convenient.

The vacuum crawler continuous dryer has continuous feeding and discharging at both ends of the fuselage respectively. The batching and discharging parts can be set in the clean room. The whole drying process is completely closed and does not contact with the external environment, which meets the requirements of GMP.

The concentrated extract can be directly sent to the vacuum belt dryer for drying without adding any auxiliary materials, which can reduce the dosage of the final product and improve the grade of the product. During the whole drying process, the product is in a vacuum and closed environment, and the drying process is mild (product temperature 40-135℃). For the extraction of natural plants, the color, fragrance and taste can be maintained to the maximum extent, and the final product of high quality can be obtained. The vacuum crawler continuous dryer can carry out complete CIP in-place cleaning, which can be easily replaced from lot to lot and from product to product, reducing labor intensity, reducing process links, and ensuring product quality. Improved economic benefits.