Powder spiral feeder working principle When the screw conveyor rotates according to the spiral, the material slides relative to the spiral blade and the material tube due to the pushing action of the blade and the friction between the material itself, the friction between the material and the inner wall of the material tube, and the internal friction of the material. The form moves forward within the tube to complete the material transfer. Powder spiral feeder application range and characteristics 1 Screw conveyor is a kind of conveying equipment widely used in the dairy industry, food, veterinary medicine, grain, chemical industry, etc. It is mainly used to transport powdery, granular and small block materials. However, it is not suitable for conveying materials that are prone to deterioration, viscous and agglomerate. 2 The screw conveyor uses an ambient temperature of 20-40 ° C; the material temperature is less than 200 ° C; the transport length is generally less than 20 meters. Compared with other equipments, 3 spiral conveying has simple structure, small cross-sectional size, good sealing performance, multi-point loading and unloading in the middle, and safe and convenient operation. Its shortcomings: low conveying capacity, high power consumption and easy to break materials during transportation.
PCR ( Polymerase Chain Reaction)
Superyears General 2215 RT-qPCRadopts all-in-one with an industrial art design, combining the Analytical Instrument, Large touch screen, and Computer. General 2215 RT-qPCR is equipped with the proven thermal-cooled electric technology, which can recognize the speed rate of temperature control faster and obtain high-quality testing results within 40 minutes. To ensure the sensitivity and stability of the testing a design with traditional beam path with a susceptible CMOS image sensor is used. In addition, General 2215 supports multiple PCR analysis and High-resolution Melt Curve (HRM) analysis, compatible with the mainstream reagent kit in the market. It will be the best assistant and your preferred RT-qPCR.
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Powder spiral feeder technical features         Â
1. This machine is a non-basic fixed type, which is connected by the drive motor, the reduction gear box, the outer casing tube and the spiral body in turn, and is combined as a whole.
2. The shaft end and the spiral body are connected by involute spline, which is convenient for assembly and disassembly, large carrying capacity, safe and reliable.
3. The outer casing of the machine is connected by stainless steel pipe through the flange to the whole section, so the overall rigidity is good, the working condition can be arbitrarily selected, and the movement can be arbitrarily disassembled and assembled.
4. The inlet and outlet ports can be made according to the working site conditions and can be connected with other supporting equipment.
5. The machine adopts the integral connecting blade rolled by the disc-shaped steel strip, the spiral surface precision is high, the inner diameter outer diameter spiral distance is accurate, and the conveying condition is very good.
6. It can be equipped with induction device to automatically control the material level of the bin of the supporting equipment to improve the automation level.
It provides a way to make more copies of a portion of DNA.
We need to have PCR ingredients that include DNA portion, Buffer solution, Primer+DNA (tap polymerase), and Nucleotides during the preparation step.
In the step of PCR sequence, there are three steps in this section.
Step 1 Denaturation
The addition of heat is needed to separate the two strands of the DNA molecule.
Step 2 Annealing
Temperature, is going to be cool in this step, should allow the primers to bind to the specific segments.
Step 3 DNA Synthesis
To make more copies of the DNA.
Those three steps above keep repeating to make enough copies of the DNA fragments. It is the principle of how PCR machine works.