Common terms for peristaltic pumps
1. Basic Definitions
1. Peristaltic pump: Peristaltic pump is also called constant flow pump and hose pump, and the mechanical principle of peristaltic pump is very simple. It pumps the fluid by alternating squeezing and releasing the tubing. It's like squeezing a liquid-filled hose with two fingers, and as the fingers move, a negative pressure is formed in the tube and the liquid flows. 
IIComponent noun
2. Pump head: It mainly provides the working environment of rollers, which is the most direct driving factor of the peristaltic pump, and is responsible for installing the card and fixing the hose.
3. Driver: The driver is a collection of control circuits, power supplies, brackets, shells and wiring, and the control circuits have the functions of buttons, displays, external control input and output, etc.
4. Hose: mainly used to transport liquids, gases, liquids and mixtures of gases and solids. The peristaltic pump hose has the characteristics of certain elasticity, certain wear resistance, certain ability to withstand pressure, no leakage (good air tightness), low adsorption, good temperature resistance, not easy to age, no swelling, corrosion resistance, and low precipitate.
5. Briquetting: responsible for pressing the rail of the hose to run the load. Briquetting forms can be divided into elastic, adjustable and fixed.
6. Roller core: The roller core is responsible for the structure of alternately squeezing the hose, and the roller core squeezes the hose to the briquetting track for cyclic alternating peristalsis.
7. Pipe clamp: The pipe clamp is responsible for fixing the hose, if the direction of the hose deviates from the normal working range, it will aggravate the wear of the hose, and even cause rupture.
8. Digital tube: mainly used to display numbers, can not display conventional letters or Chinese characters, can display special characters, such as l, f, etc. Features: simple circuit, high reliability and long life. There is flickering. There is a difference between common yin and common yang. It cannot be mixed.
9. LCD screen: used to display complex text, graphics, etc. Features: large amount of display information, rich expression, short life, complex design, high requirements for the use environment, and narrow temperature range of acid and alkali resistance.
10. Clamp: used to clamp pipe joints and hoses, made of plastic, can be reused several times.
3. Common terms
11. Pulse: In the process of pumping of the peristaltic pump, because the runner needs to be released alternately, a liquid will be sucked back at the moment of release, resulting in a sudden decrease in the discharged liquid, which will cause the pulse conveyed by the peristaltic pump.
12. Speed: Rotation speed refers to the running speed of the motor, and the number of revolutions per unit time is used as the unit of measurement, and the "rotation minutes" are commonly used, that is, "rpm" as the unit. There are also cases where other units such as "seconds" are used as units.
13. Flow rate: that is, the average flow rate, the number of volumes that flow per unit time.
Common units of flow are: ml min: milliliter min l min: microliter min l min: liter minute.
Commonly used unit relationship: 1L = 1000ml 1ml = 1000ul
14. Flow velocity: that is, the average flow velocity, the average flow velocity over a period of time. Commonly used units, meters, minutes, millimeters, seconds, etc.
15. Distribution: Fill the quantitative liquid into several containers of the same capacity.
16. Filling: efficient quantification for mass production.
17. Pipetting: Inhale the quantitative liquid at the same end, and then put it into several containers.
18. Dilution: the process of adding more solvent to the existing solution to reduce its concentration. One way is to simply add more solvent; One method is to take a portion of the mother liquor, add solvent, and repeat several times to reach the target concentration.
19. Liquid preparation: the process of mixing a variety of different solids, semi-solids and liquids in a certain proportion.
Cavitation: The phenomenon of cavernous corrosion and damage occurs on the metal surface of the fluid in contact with the fluid under the conditions of high-speed flow and pressure change. It often occurs in the high-speed decompression zone such as a pump, where a cavity is formed, and the cavity is crushed in the high-pressure area and generates impact pressure, destroying the protective film on the metal surface and accelerating the corrosion rate. Cavitation erosion is characterized by the formation of many tiny pitting on the surface of the metal, which then gradually expands into caves.