Marine NYP Series High Viscosity Rotor Pump

Marine NYP Series High Viscosity Rotor Pump

Overview

• NYP series high – viscosity rotor pumps are new – type positive – displacement pumps developed according to the demands of industries such as petroleum, chemical, paint, oil, medicine, dye, and food. Due to the selectable materials and unique structure of the products, they are widely used for conveying different properties and viscosities of media.
• Applicable medium temperature: – 10°C – 200°C (NYP70.78 and NYP2.3 have an applicable temperature of – 10°C – 80°C).
• Applicable viscosity: 1.0 cSt – 300,000 cSt (NYP70.78 and NYP2.3 have an applicable viscosity of 1.0 cSt – 10,000 cSt).
• This series is made of stainless steel material and is suitable for conveying corrosive media.

Working Principle and Structure

• Working Principle
  • With internal and external rotors (outer rotor) driven by the driving shaft, the meshing rotors rotate in the fully – enclosed pump cavity in the opposite direction. The meshing teeth of the rotors form a sealed cavity at the suction port. During rotation, the liquid is sucked in at the suction port, trapped, and conveyed to the discharge port, and then pressed out of the pump, completing the liquid conveying process.
• Structure
  • a. The pump mainly consists of internal and external rotors, a pump shaft, a front cover, a bracket, a bearing, a seal, etc. There are two forms of mechanical seals and packing seals. For high – temperature and high – viscosity and strongly corrosive media, packing seals are selected.
  • b. When conveying easily – crystallized materials, the front cover and pump body can be designed with a steam jacket, and steam can be introduced for heating during work.
  • c. A safety valve can be installed. When the pump or pipeline system is over – pressured, the safety valve opens to form an internal circulation to ensure system safety.
  • d. The pump unit consists of a pump, a motor, and a base.
  • e. The main shaft extends out of the pump cover and rotates clockwise.

Brief Introduction

• NYP series internal gear pumps are a kind of new positive – displacement pump, designed according to the different field requirements of petroleum, chemical industry, paint, grease, medicine, food industry, etc. It is widely applicable to a variety of media with different properties and viscosities due to its special structure and selected different pump materials.
  • Proper medium temperature: – 10°C – 200°C (about NYP2.3: – 10°C – 80°C).
  • Proper medium viscosity: 1.0 cSt – 300,000 cSt (about NYP0.78 and NYP2.3: 1.0 cSt – 10,000 cSt).

Structure Feature

• The pump is mainly composed of internal and external rotors, a shaft, a front cover, a seal, a bearing, etc.
  • The pump’s seal adopts a packing seal or a mechanical seal. When the conveyed medium is high – temperature, high – viscosity, or strongly corrosive, a packing seal is adopted.
  • When the conveyed medium is easy to crystallize, we can design a steam – heating jacket on the casing and front cover to melt the medium with steam when working.
  • The pump can also be equipped with a safety valve.
  • The pump set is composed of a pump, a motor, and a baseplate.
  • Viewed from the extension end of the spindle to the pump, it rotates clockwise.

Advantages

• Steady delivery without pulsation, little vibration, and low noise.
• Outstanding self – priming ability.
• The pump can convey various corrosive media if the proper material of parts is selected. In addition, the working temperature can reach 200°C.
• The same rotary direction of the internal rotor and outer rotor results in little wear and long operation life.
• The pump’s flow capacity can be changed through adjusting the speed.
• Specially suited to deliver high – viscosity medium.

Model Specification

• NYP220 – LU – T – AJ – ABCD
  • Pump basic model
  • Pump inlet and outlet: There are several forms (from the driving motor direction): RU indicates right – in and right – out (normal configuration); LU indicates left – in and left – out; RL indicates left – in and right – out.
  • Seal forms: TS indicates packing seal; TT indicates mechanical seal (M59U indicates SBU seal; M104 indicates 104 seal; MASGN indicates high – viscosity mechanical seal; DF indicates regular mechanical seal).
  • Pump’s optional parts functions: A indicates safety valve; J indicates heating jacket; K indicates cooling jacket.
  • Pump material

NYP Series High Viscosity Rotor Pump Performance Data

Attention please: The description may be different with the product, please contact us for quotation.
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