Peristaltic Pump With Flow Control

Peristaltic pump with flow control is a kind of high precision and reliable fluid conveying equipment, its flow control is accurate and high stability, so it is widely used in many industries. It achieves flow control through the extrusion of a bellows or hose. During the working process, the hose is compressed, and the pressure in the pump chamber rises, thus pushing the fluid out through the outlet. When the pressure roller is loosened, the hose will automatically rebound, absorb the external fluid, and complete the process of fluid transportation. By accurately controlling the compression and release of the pressure roller, the precise control of the flow can be achieved.

The peristaltic pump with flow control monitors the flow in real time through the built-in sensor, and transmits the data to the controller, which adjusts the drive according to the preset flow value, thus achieving precise control of the flow. In addition, some advanced peristaltic pumps also support remote control, flow display, cumulative flow and other functions, convenient for users to carry out real-time monitoring and operation.

► Core component

A. Hose

1) Material: Usually made of wear-resistant, corrosion-resistant thermoplastic elastomer, such as silicone, fluorine rubber and so on.

2) Function: As a channel for fluid delivery, the hose deforms under the extrusion of rollers or cams and returns to its original shape, pushing the fluid forward.

3) Features: It has good elasticity and wear resistance, and can maintain stable flow characteristics for a long time.

B. Rollers/cams

1) Materials: Usually made of wear-resistant, high hardness materials, such as stainless steel, ceramics and so on.

2) Function: Through rotation to compress the hose, to achieve fluid delivery. The design of roller or CAM directly affects the accuracy and stability of flow control.

3) Features: Precise profile and dimensions ensure uniform deformation of the hose when squeezed.

C. Stepper motor/servo motor

1) Function: As the driving source of the peristaltic pump, the stepper motor or servo motor realizes the precise control of the flow rate by precisely controlling the speed and position of the roller/CAM.

2) Features: With high-precision step control or closed-loop control function, to ensure the stability and accuracy of flow.

D. Flow sensor

1) Function: Real-time monitoring of fluid flow and data transmission to the control system.

2) Features: It has the characteristics of high sensitivity, high precision and fast response, which can ensure the real-time and accuracy of flow control.

E. Control system

1) Function: Receive the data of the flow sensor and accurately control the stepper motor/servo motor according to the preset flow value.

2) Features: Usually use advanced control algorithms, such as PID control, to ensure the stability and accuracy of the flow.

► Structural characteristics

A. Modular design

Peristaltic pumps are usually modular in design for easy removal and replacement of core components such as hoses, rollers/cams, etc.

The modular design also makes the peristaltic pump easy to maintain and maintain, reducing the cost of use.

B. Sealing design

Peristaltic pumps usually have good tightness in structure, which can prevent fluid leakage and the intrusion of external pollutants.

The sealing design also enables the peristaltic pump to operate stably in harsh environments such as high pressure and high temperature.

C. Adjustable design

Peristaltic pumps usually have adjustability in structure, such as adjustable roller/CAM compression force, adjustable flow sensor sensitivity.

These adjustable designs enable peristaltic pumps to adapt to different fluid characteristics and delivery requirements, improving the versatility and flexibility of the equipment.

► Material selection

Compression structures are usually made of wear-resistant, corrosion-resistant materials, such as stainless steel or special alloys, to ensure that they do not wear or deform excessively during prolonged use.

The hardness of the material should be moderate, both to be able to firmly fix the hose, but also to avoid excessive pressure on the hose and cause damage.

► Structural stability

The compression structure should have good stability to prevent loosening or deformation during the operation of the pump head.

Through reasonable structural design and reinforcement measures, such as increasing the support structure or using reinforcement bars, the stability of the compressed structure can be improved.

► Adjustment function

The compression structure should have an adjustment function to adjust the degree of extrusion of the hose according to the actual demand.

The adjustment method can be manual adjustment, such as through parts such as knobs or bolts; It can also be automatic adjustment, such as closed-loop control through components such as sensors and controllers.

► Sealing performance

The compact structure should have good sealing performance to prevent fluid leakage or external impurities from entering the inside of the pump head.

The sealing performance of the compression structure can be improved by using the sealing gasket, sealing ring and other components.

► Easy to maintain

The compression structure should be easy to remove and clean so that it can be operated easily and quickly when a hose needs to be replaced or maintained.

By adopting a standardized, modular design approach, the process of disassembly and installation of the compression structure can be simplified.

Bypass regulation

 

Bypass regulation is to change the flow of the pump by adjusting the bypass shunt. A bypass pipe is set between the outlet and the inlet of the pump. By adjusting the opening of the bypass valve, part of the flow is returned to the inlet through the bypass, so as to achieve the purpose of regulating the flow.

Bypass valve regulation:

Flow through the bypass is adjusted by rotating the handle of the bypass valve to change the opening of the valve.

This method can realize the adjustment of flow without changing the characteristic curve of the pump, and is suitable for the occasions of continuous operation of the pump in small flow.

 

 

Other adjustment methods

In addition to the above common adjustment methods, there are some other adjustment methods that can be selected according to actual needs. For example, by changing the pipe structure of the pump head (such as pipe diameter and length) to change the flow speed and resistance of the fluid in the pump chamber, so as to achieve flow regulation. In addition, the medium mass that can be transported per unit time can be changed by adjusting the extrusion pressure of the peristaltic pump, so as to control the flow rate.

Hot Tags: peristaltic pump with flow control, China peristaltic pump with flow control manufacturers, suppliers, factory, 16 Station Tablet Compression Machine, High Pressure Hydrothermal Autoclave Reactor, Short Path Distillation Kit Turn Key, Jacketed Lab Reactor, High Pressure Autoclave Reactor, Hand Tablet Press Machine