LQRY Thermal Oil Circulation Pump for Heat Transfer Systems

LQRY Thermal Oil Circulation Pump for Heat Transfer Systems

LQRY Thermal Oil Circulation Pump | High-temperature hot-oil circulation duty

  • Hot-oil circulation: For heat-transfer loops.
  • High-temp design: Stable continuous operation.
  • Protected sealing: Containment for hot media.
  • Smooth output: Stable circulation performance.
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Product Overview

The LQRY Stainless Steel Hot Oil Pump is developed based on the design concepts of modern thermal oil circulation pumps, incorporating advanced technology. It is compact, technically sophisticated, highly efficient, and ensures long-term stable operation without leakage. This pump operates efficiently without the need for an auxiliary cooling system, ensuring safety, reliability, and economic performance. It can handle a maximum operating temperature of 370°C, making it ideal for high-temperature heat transfer fluid circulation in industries such as oil, boiler systems, construction, road maintenance, pharmaceuticals, plastics, rubber, textiles, and printing and dyeing.

Model Designation

LQRY Thermal Oil Circulation Pump type

Key Features

  • High Temperature Capability: Supports a maximum temperature of 370°C, no external cooling system required.

  • Sealing System: Combines packing seals and mechanical seals for superior sealing performance.

  • Wear Resistance: Uses hard alloy mechanical seal materials to ensure long-term stable operation.

  • Innovative Design: Third-generation PTFE lip seals significantly improve sealing efficiency.

  • Self-Radiating Heat Dissipation: Compact structure simplifies system design and enhances the reliability of thermal oil systems.

Engineering Summary

The LQRY pump features a single-stage, single-suction, cantilever, and foot-mounted design, with axial suction and vertical discharge. The pump and motor are mounted on a common base, facilitating alignment and installation. The self-radiating heat dissipation structure replaces traditional water-cooling systems, reducing system complexity while enhancing overall reliability and safety during high-temperature operation.

Typical Applications

The LQRY Stainless Steel Hot Oil Pump is used for the closed-loop circulation of high-temperature heat transfer fluids, making it ideal for applications in the following industries:

  • Oil and petrochemical thermal energy systems

  • Industrial and commercial boiler installations

  • Building heating and road maintenance equipment

  • Pharmaceutical and chemical processing

  • Plastic, rubber, and textile production

  • Thermal circulation and dyeing systems

It is particularly suited for applications that require continuous, leak-free thermal fluid circulation.

System Configuration

The LQRY Stainless Steel Hot Oil Pump primarily includes the following key components:

  • Pump casing and impeller assembly

  • Single-stage cantilever shaft structure

  • Double-row ball bearing system

  • Combined packing and mechanical seal system

  • PTFE lip seal for secondary sealing

  • Motor and standard base plate

  • Oil pipe for sealing monitoring and thermal oil recovery

Components & Supply

Key components of the LQRY pump:

  • Pump casing and impeller

  • Single-stage cantilever design

  • Double-row ball bearings

  • Combined packing seals and mechanical seals

  • PTFE lip seals for secondary sealing

  • Motor and standard base

  • Oil pipe for sealing monitoring

Technical Service

  • Comprehensive technical support to ensure efficient and stable operation of the pump system

  • Customized solutions available based on customer requirements

  • Long-term technical service and maintenance support to keep the pump in optimal condition

Operating Conditions

  • Suitable media: Thermal oil and other high-temperature heat transfer liquids

  • Maximum middle temperature: ≤370°C

  • Continuous operation in closed-loop conditions

  • Operates without an external cooling system

Service Conditions

  • The system’s operating environment must meet the pump’s rated working conditions to ensure leakage-free and efficient operation.

  • The pump should perform reliably and maintain high sealing performance in high-temperature and high-pressure environments.

Protection Features

  • Sealing Protection: The combination of packing seals and mechanical seals prevents leakage.

  • Temperature Control: The self-radiating heat dissipation design helps reduce operational temperature and protects the pump.

  • Pressure Monitoring: The pump is equipped with pressure monitoring functions to ensure safe operation.

Selection Standards

When selecting the LQRY Stainless Steel Hot Oil Pump, consider the following standards:

  • Applicable fluid types (thermal oil and other high-temperature heat transfer liquids)

  • Maximum working temperature (up to 370°C)

  • Flow rate and head required for specific applications

Specifications & Installation

Outline Drawing

 

LQRY Stainless Steel Thermal Oil Pump Structural Diagram

Performance Data

1 Pump Body 2 Cap Nut 3 Impeller 4 Plug 5 Thermal Ring 6 Flat Key
7 Pump Cover 8 Elastic Ring 9 Aluminum Gasket 10 Pressure Ring 11 Gasket 12 Nut
13 Washer 14 Bolt 15 Bolt 16 Pump Shaft 17 Ball Bearing 18 Bearing Seat
19 Gasket 20 Aluminum Nameplate 21 Rivet 22 Mechanical Seal 23 Bolt 24 Support Foot
25 Gasket 26 Oil Guide Pipe 27 Screw 28 Gasket 29 Rubber Seal 30 Bearing Cover
31 Gasket 32 Pump Coupling 33 Flat Key 34 Elastic Block 35 Motor Coupling 36 Cover
37 Screw 38 Motor 39 Bolt 40 Bolt 41 Gasket 42 Base
43 Gasket 44 Elastic Stop Ring 45 46 47 48

Operating Manual

Installation & Requirements

  1. The quality of installation plays a crucial role in the smooth operation and service life of the LQRY stainless steel thermal oil pump, so the installation work must be done carefully and without haste.

  2. The suction pipe height, length, and diameter should meet the calculated values. Keep the installation as short as possible to reduce unnecessary losses (such as elbows, etc.).

  3. The suction and discharge pipelines should be supported by pipe racks, and the pump should not bear the weight of the pipeline.

  4. The installation location of the pump should be spacious enough to facilitate maintenance and provide good heat dissipation.

Installation Procedure

  1. Place the unit on a foundation with anchor bolts, placing matching shims between the base and foundation for alignment, then tighten the anchor bolts.

  2. Loosen the coupling, use a level to check the alignment of the pump shaft and base, adjust the wedges to level, then tighten the anchor bolts to prevent movement.

  3. Pour concrete to set the base and anchor bolts.

  4. After the concrete has hardened, check if the base and anchor bolts are loose or defective. Tighten the anchor bolts and recheck the pump’s level.

  5. Check the coaxiality between the pump shaft and motor shaft. The allowable deviation on the coupling outer circle is 0.1mm, and the gap between the two coupling faces should be 2-3mm, with the maximum and minimum gap difference not exceeding 0.3mm.

  6. After connecting the piping and ensuring the correct direction of the motor, reconnect the coupling and check coaxiality again.

  7. After the actual trial run for 3-4 hours, check again. If no abnormal conditions are found, the installation is considered successful.

  8. During installation, to prevent debris from entering the machine, cover all holes and ensure proper cleaning of the inlet and outlet pipes before operation. Install a filter on the pump inlet to prevent foreign objects from entering the pump.

OEM & Custom

We offer OEM branding, stainless-steel versions, PTFE upgrade seals, high-temperature models, custom bases, flange standards, voltage options, and export-grade packaging for international buyers.

FAQs

  1. 1. What is the maximum working temperature?
    The pump handles up to 370°C; special materials can reach higher ranges.
  2. 2. Does the pump require cooling water?
    No. LQRY uses a self-radiation design and does not need external cooling.
  3. 3. What industries commonly use this pump?
    Petroleum, chemical, textile, rubber, plastic, boilers, and dyeing systems.
  4. 4. What seal types are included?
    High-temperature packing seal + mechanical seal + PTFE lip seal.
  5. 5. How should the system be preheated?
    Increase temperature slowly until water vapor is fully removed; casing ≥40°C.
  6. 6. What maintenance is required?
    Bearings need service every 3,000 hours; check alignment, vibration and leakage.
  7. 7. Can OEM customization be provided?
    Yes, including materials, seals, voltage, flanges, and special temperature configurations.