According to the production capacity of the general crusher manual and the nameplate, the determined production capacity (kg/h) of the crusher is contained, but the following points should be noted:
1. The rated production capacity contained refers to the production in a specific state. For example, the crushed raw material is corn, the moisture content is stored in safe moisture (about 13%), and the sieve aperture diameter is 1.2 mm. Since corn is a commonly used grain feed, a sieve with a diameter of 1.2 mm in diameter is the smallest sieve commonly used. At this time, the production capacity is small, which takes into account the more difficult conditions in production.
2. The selected crusher's production capacity should be slightly larger than the actual required production capacity, otherwise it will increase the hammer wear, air leakage and other reasons leading to a decline in production capacity, affecting the continuous supply of feed production. According to the crushing raw material selection to crush the grain feeds, the top-feeding hammer crusher can be selected; for crushing the bran-gluten wheat feed, the claw crusher can be selected; if the requirement of universality is good, Crushed grain is the main product, and both pie and grain stalks can be taken into consideration. The tangential feed hammer mill can be selected; crushed shellfish and other mineral feeds can be used as a shellless sieve crusher; if used as a pre-mixed feed pretreatment, it is required If the size of the product being crushed is fine and can be adjusted according to needs, a special non-screen type crusher should be used. There are three ways to select the output of the crushing product through the discharge device according to the way of discharging material: self-weight blanking, negative pressure suction and mechanical transportation. Small stand-alone use more self-heavy materials to simplify the structure. Most of the medium-sized pulverizers have a negative pressure suction device, which has the advantage of absorbing the moisture of the finished product, lowering the humidity in the finished product and facilitating storage, increasing the pulverization efficiency by 10% to 15%, and reducing the dust-generation degree of the pulverization chamber. According to the matching power, the power specification kilowatts of the supporting motor of the shredder is contained on the machine specification and on the nameplate. It often shows not a fixed number but a certain range. For example, 9FQ-20 type crusher, supporting power is 7.5 ~ 11.0 kilowatts; 9FQ-60 crusher, supporting power is 30 ~ 40 kilowatts. There are two reasons for this: First, there is a big difference in the required power when the crushed raw materials are different. For example, under the same working conditions, the smashed sorghum is twice as powerful as the crushed corn; the second is when using different sieves. In the hole, the load of the crusher has a great influence. Therefore, when the 9FQ-60 crusher uses a 1.2 mm diameter sieve, the motor capacity should be 40 kW. When using a sieve with a diameter of 2 mm, a 30 kW motor can be used, and a 3 mm diameter sieve is a 22 kW motor, otherwise it will cause waste. According to energy-saving conditions, according to the standards of the relevant authorities, when the hammer-type crusher crushes maize with a 1.2-mm-diameter screen, the output per kilowatt-hour should not be less than 48 kilograms. At present, the output per kilowatt hour of the domestic hammer mill has greatly exceeded the above-mentioned regulations, and the quality has reached 70-75 kilograms per kilowatt-hour. According to the dust and noise, the dust and noise in feed processing mainly come from the crusher. When selecting a type, these two indicators should be fully considered. If a grinder with high noise and dust is chosen as the last resort, silencing and dust prevention measures should be taken to improve the working environment and help the operators' health.
PCR ( Polymerase Chain Reaction)
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.
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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