Deep Well Submersible Pump for Irrigation

The JINAOTE ATQJ Series Deep Well Submersible Pump for Irrigation is designed for reliable groundwater extraction in agricultural irrigation, deep wells, reservoirs and water supply systems. Featuring a multi-stage centrifugal design, corrosion-resistant construction and energy-efficient motor, it delivers stable performance, low maintenance requirements and long service life under demanding operating conditions.

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Product Description

General Description

Our company’s A5QJ series Deep well Submersible Pump for Irrigation are designed for groundwater extraction from deep wells, as well as water intake projects from rivers, reservoirs and canals. Widely applied in farmland irrigation, domestic water supply for people and livestock in mountainous areas, it is also available for drainage in cities, factories, railways, mines and construction sites.

Product Features

1.Integrated motor and pump structure, submersible underwater operation with high safety and reliability.
2.No special requirements for well casing; the rising pipe only needs to withstand corresponding working pressure.
3.Easy installation, operation and maintenance, small floor space occupation; no pump house construction required.
4.Compact structure and low raw material consumption.

Technical Specifications

Item	Specification
Pump Type	Vertical Deep Well Submersible Pump
Structure	Multi-stage Centrifugal Pump
Motor Type	Three-phase Asynchronous Submersible Motor
Rated Voltage	380V / 660V
Frequency	50Hz
Flow Range	Customized
Head Range	Up to 900 m
Installation Type	Vertical Installation
Cooling Method	Water-filled Motor Cooling
Medium Temperature	≤20℃
PH Range	6.5–8.5
Solid Particle Content	≤0.01%

Deepwell Submersile Pump for Irragation

Service Ambient & Operating Conditions

1.3-phase AC power supply: 50Hz frequency, rated voltage 380V or 660V (allowable tolerance ±5%).
1.Solid particle content by mass ≤ 0.01%.
2.PH value of pumped liquid ranges from 6.5 to 8.5.
3.Medium temperature ≤ 20℃.
4.Inlet of Deep Well Submersible Pump for Irrigation should be at least 1m below dynamic water level; maximum submergence depth is 70m under static water level; the pump bottom keeps minimum 1m clearance from well bottom.
5.Straight well casing with smooth inner wall and no casing dislocation.

Structural Characteristics

1. The Deep Well Submersible Pump for Irrigation consists of submersible 3-phase asynchronous motor and pump body. The motor is directly coupled with upper pump unit. Reliable shaft seal fitted on top motor shaft prevents cross-leakage between internal motor cooling water and pumped medium, ensuring long-term stable operation.

2. The pump is single-suction multi-stage vertical centrifugal type; matched motor is water-filled wet-type vertical submersible asynchronous motor, connected via barrel-type coupling.

3. Motor winding adopts nylon-sheathed PE waterproof magnet wire; the motor cavity is filled with clean fresh water.

4. Water-lubricated guide bearings are used for motor. Thrust bearing at motor bottom bears bidirectional axial thrust from pump. High-head version equips nickel-containing copper fan-shaped thrust pads matched with imported Phylos sliding plates for axial load bearing.

5. An extra axial force bearing component is installed between pump and motor on high-lift models, maximum head up to 900m.

Precautions for Operation

1.Fill the motor cavity with clean fresh water before startup; drain all internal water for winter storage to avoid frost cracking.
2.Regularly test insulation resistance of the unit, value shall not be lower than 0.5 MΩ.
3.Standard warranty period: 1 year under normal operation.

Model Code Explanation

Example: QJ80-100-37

Code	Meaning
Q	Submersible Type
J	Deep Well Application
80	Rated Flow: 80 m³/h
100	Rated Head: 100 m
37	Motor Power: 37 kW

How to Select the Right Deep Well Submersible Pump?

Before selecting a pump model, customers should confirm the following information:

1. Required Flow Rate

Determine the required water output according to irrigation area and water demand.

2. Total Pump Head

Calculate the required lifting height including:
• Well depth
• Vertical lifting distance
• Pipeline pressure loss
• Terminal water pressure requirements

3. Well Diameter

Select a pump diameter suitable for the existing well casing.

4. Power Supply

Confirm voltage, frequency and available electrical capacity.

5. Water Quality

Check water temperature, PH value and solid particle content.
Providing these parameters helps ensure the selected pump delivers the expected performance.

What should you do if the following problems occur?

Fault Phenomena	Reasons	Solutions
Head unreachable, no water able to be absorbed or insufficient water discharge.	1.Dynamic water level drops under the allowed min. dynamic water level; 2.Breakage in lift pipe joint; 3.Reversal rotation of the motor; 4.Decrease in voltage; 5.Blocked water inlet; 6.Damaged coupler.	1.Increase pump stage and lift pipe, to increase well depth; 2.Repair breakage; 3.Replace wire connector; 4.Check voltage; 5.Wash water inlet; 6.Replace coupler.
Motor fails to run at startup, with buzz.	1.Bearing seizure; 2.Single phase running of the motor.	1.Examine and repair damaged parts; 2.Check connecting wire, and find phase failure.
Overlarge ammeter pointer swing	1.Dynamic water level drops to absorption inlet; 2.Dynamic water level drops under the allowed min.dynamic water level;	1.Reduce water discharge, and increase submergence depth.
Violent vibration of the unit	1.Pump spindle is bent; 2.Wear and tear at unit bearing part is too large; 3.Too intense throttle; 4.Damaged coupler.	1.Calibrate the spindle; 2.Replace the bearing; 3.Enlarge the gate valve; 4.Replace coupler.
Drop in flow	1.Wear and tear at wearing ring; 2.Blocked water inlet; 3.Leakage at joint between lift pipes or shells.	1.Repair or replace worn parts; 2.Wash water inlet; 3.Check connection part.
Sudden Decrease In Insulation Resistance	1.Poor quality of motor cable connector; 2.Damaged insulation of motor rotator wiring; 3.Worn cable.	1.Reconnect cable connector; 2.Repair motor wiring; 3.Repair damages.
Increase in power consumption (ammeter indication exceeds rated value)	1.Worn bearing impeller; 2.Inter contact of the motor after the bearing is worn; 3.Abrasion between impeller and shell.	1.Examine and repair pump; 2.Examine and repair motor; 3.Control flow and check motor thrust bearing.

Frequently Asked Questions

1. What is a deep well submersible pump used for?

A deep well submersible pump is mainly used for extracting groundwater from deep wells and supplying water for irrigation, domestic use, industrial applications and other water transfer projects.

2. Can this pump be used for agricultural irrigation?

Yes. The ATQJ Series is designed for farmland irrigation, sprinkler systems, greenhouse irrigation and other agricultural water supply applications.

3. What information is required before ordering?

Customers should provide:
• Required flow rate
• Pump head
• Well depth
• Well diameter
• Water source information
• Power supply requirements

4. Can JINAOTE customize the pump?

Yes. JINAOTE can customize pump parameters including flow rate, head, motor power, voltage and materials according to project requirements.

5. How deep can this Deep Well Submersible Pump for Irrigation work?

The allowable installation depth depends on the selected model and operating conditions. High-head models can achieve lifting heads up to 900 meters.

6. What maintenance does a deep well submersible pump need?

Regular checks of insulation resistance, cable condition, operating current and water output are recommended to maintain stable performance.

Why Work With JINAOTE

JINAOTE has been specializing in pump manufacturing for many years, providing deep well submersible pumps for agricultural, industrial and municipal applications. With experienced engineering capability and flexible manufacturing processes, JINAOTE supports standard models as well as customized pump solutions for different water supply projects.