How to Use Peristaltic Pump: Examples, Pinouts, and Specs

Introduction

A peristaltic pump is a type of positive displacement pump designed to move fluids through a flexible tube by compressing and relaxing the tube in a sequential manner. This action creates a vacuum that draws the fluid into the tube and pushes it out. The pump is highly valued for its ability to handle viscous fluids, maintain sterile conditions, and prevent contamination since the fluid only comes into contact with the tubing.

Explore Projects Built with Peristaltic Pump

Use Cirkit Designer to design, explore, and prototype these projects online. Some projects support real-time simulation. Click "Open Project" to start designing instantly!

ESP32-Based Bluetooth-Controlled Cocktail Drink Mixer with Peristaltic and Diaphragm Pumps

This circuit is an automated cocktail drink mixer controlled by an ESP32 microcontroller. It uses multiple peristaltic and diaphragm pumps to dispense various liquids, an ultrasonic sensor to detect the presence of a glass, and LED rings for visual feedback. The system is operated via Bluetooth commands sent from a mobile app.

Open Project in Cirkit Designer

Arduino and ESP-8266 Controlled Peristaltic Pump and Stepper Motor System with L298N Motor Drivers

This circuit controls a peristaltic pump and two types of motors (a NEMA23 stepper motor and two Greartisan DC geared motors) using an Arduino UNO and an ESP-8266 for potential wireless communication. The Arduino UNO interfaces with three L298N motor driver modules to drive the motors, and it is also connected to the ESP-8266, which may be used for remote signaling or data transmission. The circuit is powered by a 12V battery, which supplies power to the motor drivers and, through them, to the motors and the pump.

Open Project in Cirkit Designer

ESP32 and Arduino Mega 2560 Controlled Peristaltic Pump System with Pressure and Flow Sensors

This circuit is designed for fluid control and monitoring, featuring multiple peristaltic pumps driven by TB6600 micro-stepping motor drivers, and pressure sensors interfaced with custom PCBs containing ESP32 microcontrollers. It also includes flow meters connected to Arduino Mega 2560 boards for precise flow rate measurement, with power management handled by DC-DC converters and power supplies.

Open Project in Cirkit Designer

Arduino UNO Controlled Peristaltic Pump System with Temperature and Pressure Monitoring

This circuit is designed to control a KPCS200 peristaltic pump using a TMC2226 stepper driver, powered by a 12V battery and regulated by a step-up boost converter. An Arduino UNO microcontroller manages various sensors, including temperature, pressure, and conductivity sensors, as well as a servo and a relay module for a water heater, enabling precise control and monitoring of fluid flow and environmental conditions.

Open Project in Cirkit Designer

Common Applications and Use Cases

• Medical Applications: Used in dialysis machines, infusion pumps, and blood circulation systems.
• Laboratory Settings: Ideal for transferring chemicals, biological samples, and other sensitive fluids.
• Industrial Processes: Used in food processing, water treatment, and chemical dosing systems.
• Aquarium and Hydroponics: For precise dosing of nutrients, water, or chemicals.

Technical Specifications

Below are the general technical specifications for a typical peristaltic pump. Note that specific models may vary, so always refer to the datasheet of your pump.

Key Technical Details

• Operating Voltage: 5V to 24V DC (depending on the model)
• Current Consumption: 100mA to 1A (varies with load and voltage)
• Flow Rate: 10 mL/min to 1000 mL/min (model-dependent)
• Tube Material: Silicone, PVC, or other flexible materials
• Tube Inner Diameter: 1 mm to 8 mm
• Maximum Pressure: 2 to 3 bar
• Lifespan: 1000 to 3000 hours (depending on usage and tubing material)

Pin Configuration and Descriptions

Most peristaltic pumps are simple DC motor-driven devices with two terminals. However, some advanced models may include additional control features. Below is a typical pin configuration:

For pumps with integrated controllers: | Pin | Label | Description | |---------|-----------------|---------------------------------------------------------------------------------| | 1 | VCC | Power input (e.g., 5V or 12V DC). | | 2 | GND | Ground connection. | | 3 | PWM/Control | Optional input for speed control using a PWM signal. |

Usage Instructions

How to Use the Component in a Circuit

1. Power Supply: Ensure the pump is powered by a DC voltage within its operating range (e.g., 12V DC). Use a regulated power supply to avoid voltage spikes.
2. Motor Driver (Optional): If controlling the pump with a microcontroller (e.g., Arduino), use a motor driver (e.g., L298N or ULN2003) to handle the current requirements.
3. Tubing Installation: Insert the flexible tubing into the pump head, ensuring it is properly seated and not kinked.
4. Fluid Handling: Connect the inlet and outlet ends of the tubing to the desired fluid source and destination.
5. Control: For pumps with PWM control, connect the control pin to a PWM-capable pin on your microcontroller.

Important Considerations and Best Practices

• Tubing Material: Use tubing compatible with the fluid being pumped to avoid degradation or contamination.
• Flow Direction: The pump's flow direction can be reversed by swapping the polarity of the power connections.
• Avoid Dry Running: Running the pump without fluid can damage the tubing and reduce its lifespan.
• Speed Control: Use PWM signals to adjust the pump speed for precise flow rate control.
• Maintenance: Regularly inspect and replace the tubing to maintain performance and prevent leaks.

Example: Controlling a Peristaltic Pump with Arduino UNO

Below is an example of how to control a peristaltic pump using an Arduino UNO and an L298N motor driver.

// Define motor driver pins
const int IN1 = 9;  // Motor driver input 1
const int IN2 = 10; // Motor driver input 2
const int ENA = 11; // Motor driver enable pin (PWM)

// Setup function
void setup() {
  pinMode(IN1, OUTPUT); // Set IN1 as output
  pinMode(IN2, OUTPUT); // Set IN2 as output
  pinMode(ENA, OUTPUT); // Set ENA as output
}

// Loop function
void loop() {
  // Rotate pump in forward direction
  digitalWrite(IN1, HIGH); // Set IN1 high
  digitalWrite(IN2, LOW);  // Set IN2 low
  analogWrite(ENA, 128);   // Set speed to 50% (PWM value: 0-255)

  delay(5000); // Run pump for 5 seconds

  // Stop the pump
  analogWrite(ENA, 0); // Set speed to 0
  delay(2000);         // Wait for 2 seconds

  // Rotate pump in reverse direction
  digitalWrite(IN1, LOW);  // Set IN1 low
  digitalWrite(IN2, HIGH); // Set IN2 high
  analogWrite(ENA, 128);   // Set speed to 50%

  delay(5000); // Run pump for 5 seconds

  // Stop the pump
  analogWrite(ENA, 0); // Set speed to 0
  delay(2000);         // Wait for 2 seconds
}

Troubleshooting and FAQs

Common Issues and Solutions

1. Pump Not Running

   • Cause: Incorrect power supply or loose connections.
   • Solution: Verify the power supply voltage and current. Check all connections.

2. Low Flow Rate

   • Cause: Tubing is kinked, worn out, or too small for the application.
   • Solution: Inspect and replace the tubing. Use tubing with a larger inner diameter if needed.

3. Pump Overheating

   • Cause: Prolonged operation at high speeds or excessive load.
   • Solution: Reduce the operating speed or allow the pump to cool periodically.

4. Fluid Leakage

   • Cause: Damaged or improperly installed tubing.
   • Solution: Replace the tubing and ensure it is properly seated in the pump head.

FAQs

• Can I use the pump for corrosive fluids?

  • Yes, but ensure the tubing material is compatible with the fluid to prevent damage.

• How do I reverse the flow direction?

  • Swap the polarity of the power connections to the pump.

• What is the lifespan of the tubing?

  • Tubing lifespan depends on the material and usage but typically ranges from 1000 to 3000 hours.

• Can I control the pump speed without a microcontroller?

  • Yes, you can use a variable DC power supply or a manual PWM controller to adjust the speed.