What are the factors affecting the quality and price of peristaltic pump

With the market popularity and development of peristaltic pumps, there are also many peristaltic pump manufacturers. For each manufacturer of peristaltic pump price and function, the material is different. There are differences in material and function, so the price is also different.

First is the difference between the pump head material: the pump head is mainly composed of shell, roller assembly two parts.

The pump head is mainly composed of shell and roller assembly.

First, about the shell. Some cheap pump headshells mostly use ABS, PC, and other materials, these materials are very cheap, and the mold is easy to process, so the cost is very low. But the pump head rigidity and corrosion resistance are relatively poor. The high-quality peristaltic pump will generally use PPS material, this material is very good rigidity, toughness, corrosion resistance, of course, the price of raw materials is more than 5 times more expensive than the general material, the requirements of the mold is very strict, the production cost is also very high, the pump headshell of the peristaltic pump is imported PPS raw materials.

Two, about roller assembly. Roller assembly is an important moving part of the peristaltic pump. It is generally composed of spindle, needle roller, roller, wheel, bearing, washer, and other parts.

Driver differences:

The driver is mainly composed of a box body and internal drive circuit and motor. Box general material has an injection box, iron box spraying box, stainless steel box. The appearance of the injection box is relatively beautiful, and the weight is light, the initial mold cost is high, and the cost of a single product is much lower. The cost of the iron case is much higher, the weight is relatively much heavier, but the body is good rigidity, strong anti-drop ability, in the factory and another harsh use environment, adaptability is much higher than the injection box. The stainless steel box is a higher cost, but the ability to adapt is stronger.

Drive circuits and motors are usually used together. At present, the motor types used by the peristaltic pump are AC motor, DC motor, DC brushless motor, stepper motor, and servo motor. The cost increases in turn, and the accuracy increases in turn. But some manufacturers advertise their products using servo motors, which are fake servo systems with much lower accuracy than stepper motors. If the stability of low speed is compared, the stepper motor is higher. Compared with stepper motor, servo motor has the advantage of smaller vibration than stepper motor and stronger overload capacity. The advantage of the stepper motor is that under the same volume, the motor's low-speed torque is large, and there is no need for a reduction box, so the reliability is much higher. In addition, the stepper motor can achieve very high positioning accuracy under the condition of an open loop, which is unmatched by most other motors. In terms of reliability, dc motor reliability is poor, because it contains a brush device and reducer mechanism; Followed by an ac motor, dc brushless, and servo motor. After all, the working speed of the peristaltic pump is limited by the elasticity of hose are generally work within 600 RPM speed, so too under the condition of low speed of peristaltic pump head to the torque, you need to add reducer, reducer of this small general quality is not too good, If the high-quality reducer is selected, the cost will be higher than the total cost of the whole peristaltic pump equipment, so the reliability of this drive mode is limited to the reducer part of the structure; The stepper motor has no brush mechanism, and does not need to use a reduction box, so its reliability is the highest of all power combinations. If the operation accuracy of a peristaltic pump is required, the better choice is a stepper motor or servo motor system.

So when choosing a peristaltic pump, you can learn more about the comparison.

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