Submersible Mini Water Pump

A Submersible Mini Water Pump that operates on 3-6V DC is a compact and versatile pump used for moving water (or other non-corrosive liquids) in various applications. These pumps are commonly used in projects like small aquariums, fountains, garden irrigation, or DIY water systems.

Key Features of a Submersible Mini Water Pump (3-6V DC):

1. Voltage Range: Typically operates between 3V and 6V DC, which makes them compatible with low-voltage systems, such as Arduino or other microcontroller projects.
2. Compact Size: These pumps are small and lightweight, often making them ideal for small spaces where traditional larger pumps would be impractical.
3. Submersible Design: As the name suggests, these pumps are designed to be submerged in the liquid they are pumping. This makes them ideal for tasks like circulating water in aquariums or small water cooling systems.
4. Flow Rate: Flow rates for these pumps typically range from 50 to 200 liters per hour (L/h), but this can vary depending on the model and operating voltage.
5. Low Power Consumption: Due to their low voltage and small size, these pumps are energy-efficient, which is especially important for battery-operated systems.
6. Durability and Material: These pumps are usually made of durable plastic or metal components that resist rust and corrosion, although it's important to ensure you're using it with non-corrosive liquids.
7. Noise Level: Because they are small and submersible, they tend to be quieter compared to larger pumps.

Common Applications:

1. Aquarium Circulation: These pumps are used to circulate water and maintain proper water flow in small aquariums or fish tanks.
2. Fountains and Water Features: They are commonly used in small decorative fountains or water features for residential or garden setups.
3. Hydroponics and Irrigation: Used in small-scale irrigation or hydroponic systems to circulate water to plants.
4. DIY Projects: They are often integrated into various DIY projects involving water pumping, such as small water cooling systems, homemade water filtration systems, or small boat models.
5. Coolant Circulation: In hobby cooling projects or even small computer water cooling systems, where space and low power are important factors.

Specifications of a Typical 3-6V Submersible Mini Water Pump:

• Voltage: 3V to 6V DC (some might even work at 2.5V).
• Current: Approximately 100mA to 300mA depending on the voltage.
• Flow Rate: 50-200 L/h (liters per hour), depending on the model.
• Maximum Lift (Head): Usually between 0.5m to 2m.
• Size: Typically small, around 4-6 cm (length), 3-4 cm (width), and 2-3 cm (height).
• Operating Temperature: Most are designed to operate between 0°C and 60°C (32°F to 140°F).

Pinout/Connections:

These mini pumps typically have two wires (for power):

1. Red Wire: Connect to the positive terminal (Vcc or +) of the power supply.
2. Black Wire: Connect to the negative terminal (GND or -) of the power supply.

The pump will run as soon as power is applied, so to control it, you can use a transistor or a relay if you want to switch it on/off with a microcontroller like Arduino.

Example: Using a Submersible Mini Water Pump with Arduino

Here’s an example of how you can control a submersible mini water pump using an Arduino and a N-channel MOSFET:

Components Needed:

• Submersible Mini Water Pump (3-6V)
• Arduino board (e.g., Arduino Uno)
• N-channel MOSFET (e.g., IRF540)
• Flyback diode (e.g., 1N4007)
• External 5V or 6V power supply for the pump
• Resistor (220 ohms)
• Jumper wires
• Breadboard (optional)

Circuit Setup:

1. Connect the positive terminal of the external power supply to the positive terminal of the pump.
2. Connect the negative terminal of the pump to the Drain pin of the MOSFET.
3. The Source pin of the MOSFET connects to the ground of both the pump and the Arduino.
4. The Gate pin of the MOSFET connects to a digital pin (e.g., pin 9) of the Arduino through a 220-ohm resistor.
5. Add a flyback diode in parallel with the pump (cathode to the positive terminal, anode to the MOSFET Drain pin) to protect the MOSFET from voltage spikes caused by inductive loads.
6. Use the Arduino ground (GND) to complete the circuit.

Sample Arduino Code:

int pumpPin = 9;  // Pin connected to MOSFET Gate

void setup() {
  pinMode(pumpPin, OUTPUT);
}

void loop() {
  digitalWrite(pumpPin, HIGH);  // Turn the pump ON
  delay(5000);                   // Run the pump for 5 seconds
  digitalWrite(pumpPin, LOW);   // Turn the pump OFF
  delay(5000);                   // Wait for 5 seconds before turning it on again
}

Controlling the Speed of the Pump (Optional):

You can also control the speed of the pump using Pulse Width Modulation (PWM) by using the analogWrite() function. This allows for more precise control over the flow rate or the amount of time the pump runs.

int pumpPin = 9;  // Pin connected to MOSFET Gate

void setup() {
  pinMode(pumpPin, OUTPUT);
}

void loop() {
  analogWrite(pumpPin, 128);  // Set PWM duty cycle (range 0 to 255, where 128 is 50%)
  delay(5000);                 // Pump running for 5 seconds
  analogWrite(pumpPin, 0);    // Turn the pump OFF
  delay(5000);                 // Wait for 5 seconds
}

Important Considerations:

1. Power Supply: Ensure that the power supply can handle the required voltage and current for the pump.
2. Overheating: Submersible pumps are usually water-cooled by the liquid they are pumping. If the pump is run without water or in dry conditions, it may overheat or burn out.
3. Waterproofing: Always ensure that the pump is designed to be fully submerged in water and that the casing is sealed to prevent short circuits or damage.
4. Pump Lifespan: These pumps are designed for relatively low-duty cycles. Continuous running at high power may reduce their lifespan.

Applications:

• Aquarium Filtration: To circulate and filter water in small aquariums.
• Hydroponic Systems: Circulating water and nutrients to plants.
• Water Cooling: Used in small DIY water cooling systems for electronics or computers.
• Miniature Fountains: For small water features in gardens or indoor displays.
• Portable Water Pumping: For small water pumping needs in remote or small-scale applications.

Origin:- China

Brand:- Generic