High Viscosity Rotary Screw Pump

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Product Description:

Packaging & Delivery

Packaging Detail:standard export plywood case per screw pump weight:120kg~1200kg per different three screw pump
Delivery Detail:7 working days after received the payment


screw pump
1.The medium is a straight line
2.Low vibration, low noise;
3.The structure

High Viscosity Rotary Screw Pump, Concrete Screw Pump price, Asphalt Bitumen pump  

Overview and purpose:


   Three screw pump is suitable for a variety of non-corrosive oil and similar oil and lubrication liquid. Conveying the liquid viscosity range is generally 3.0-760mm2 / s (1.2-100oE), the high viscosity of the medium may be followed by a warming Visbreaking conveyed. Its temperature does not exceed 350 °C.

   Three screw for conveying fuel oil, lubricating oil, hydraulic oil, crude oil, asphalt and other similar oil lubricants and lubricating liquid.

   Three screw pump lubrication pump in the industrial field, in the hydraulic system for hydraulic pump for conveying and booster pump in the fuel system, transmission and fuel pumps in the oil system.

Product Features:

 (1)  The medium is a straight line, without agitation and without pulsation;

 (2)  Low vibration, low noise;

 (3)  High pressure, high efficiency;

 (4)  The structure is simple, easy accessibility;

 (5)  Minor wear, long life.

Technical parameters:


Flow range: 2.4m ³ / h to 240m ³ / h

Head range: 60m ~ 250m

Motor power: 1.1kw ~ 90kw

Note: If you have special requirements, please contact our technical staff! (0577-67981666)

Model significance:

Example: LQ3G 60 * 2-46

LQ3G - three screw pump

    60 - Screw diameter

     2 -  screw pitch

    46 - screw the helix angle of 46 °

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Q:Water pump outlet valve sequence
Design specifications detailed manual instructions, divided into two cases:1, pump water first check valve, suitable for small caliber pipeline, gate valve to protect the non-return valve, not damage function;2, pump water out of the first gate valve, check valve for large diameter pipe, at this point valve easy to open and close;The setting of the check valve is mainly to avoid the high reverse speed of the pump and the condition of the submerged pump house. Set in the suction port of the pump, then stop the pump water flow will still affect the pump. In addition, the pump suction should try to avoid installing too many pipe fittings, so that the pump can maintain sufficient cavitation margin.
Q:What is the difference between swashplate pump and crankshaft pump?
Piston pump: valve plate, valve plate, piston, piston ring, crankshaft, connecting rod and so on, all belong to its spare parts.Piston pump working principle: by the piston in the pump cylinder for reciprocating movement to suction and remove liquid.
Q:What's the difference between a centrifugal pump and a centrifugal pump? What are they used for?
Centrifugal pumps are used to transport liquids (or mixtures, waste water, waste materials) from one location to another.
Q:What are the application areas of pumps?
Water pump has different uses, different transmission liquid medium, different flow, lift range, therefore, its structure form is not the same, the material is also different, summed up, can be roughly divided into:
Q:Any center of the pump
Alignment methods and requirements:1, check two feeler dial gauge or flange coupling the parallelism, usually with clearance between the both ends of the side instead of difference, in the circumferential direction every 900 measure, the maximum and minimum gap gap difference (Ab) less than or equal to 0.3 mm.2, the coupling flanges outside the park up and down, left and right four position to check whether they are in the same line, C less than or equal to 0.1 mm.When looking for a positive C, it will affect (a - b), finding the right (a - b) will affect the C, to balance each other. It's easier for an unskilled comrade to find C (a - b) first, and then find a positive one. Through the adjustment of the motor at the foot of the gasket thickness (Ab) and meet the requirements of C.Check the inlet and outlet piping before alignment. Make sure the weight of the inlet and outlet pipe does not exert force or torque on the pump. When looking for, should also pay attention to eliminate the pump rotor movement, so as to avoid the end gap error. If checked after the pump is working, it should be carried out under cold condition.It is important to draw attention to the fact that the pump set of the complete set of factory is only rough looking (checked with a ruler) when it is shipped. It may cause displacement when it is transported.
Q:Constant pressure pump working principle
The pressure loss is borne by the valve. Constant pressure pumps generally do not export direct load, unless you need this load response is very fast, then the maximum displacement of the pump work, so as to ensure the rapid response of the load.
Q:The main factors affecting the performance of centrifugal pumps
Revolutions required to have. It has the following meanings: 1, similar to the geometry of centrifugal pump, everywhere efficiency at the top of the similar condition; centrifugal pump 2, than the number of different, its geometry must be different than the number; the same pump, its shape is similar, but does not rule out the shape similar situation. The following factors are related to specific speed. The specific speed of centrifugal pump has nothing to do with the nature of the conveying fluid, but has a close relationship with the shape of the impeller and the performance curve of the pump. The pump with high specific speed corresponds to the highest efficiency when the flow rate is large and the head is small
Q:What is a solution pump?
Principle and structure features of canned motor pumpThe ordinary centrifugal pump is driven by coupling the pump impeller shaft is connected with the motor shaft, the impeller and the motor rotates while working and shielding pump is a kind of non seal pumps, pump and motor is sealed in a medium filled by pumping the pressure vessel, the pressure vessel only static seal and, by a group of wires to provide a rotating magnetic field and drive the rotor. This structure eliminated the traditional centrifugal pump with a rotary shaft sealing device, it can do no leakage.The pump and motor pump together, motor rotor and pump impeller fixed on the same shaft, use of shielding the rotor and the stator of the motor rotor separated in the medium, its power is transferred to the rotor through the stator magnetic field.
Q:Brief description of centrifugal pump on / off operation
Two, centrifugal pump start(1) the pump entrance valve fully open, start motor, outlet valve fully closed, fully check operation of pump.(2) when the pump outlet pressure is higher than the operation pressure, the outlet valve is gradually opened to control the flow and pressure of the pump.(3) check whether the motor current is within the rated value, such as the pump in the rated flow operation, and the motor overload should stop the pump inspection.
Q:What does the impeller on the centrifugal pump mean by the first cutting?
I used to do this job before. After the impeller is cut, the flow and lift will decrease. Sometimes, the same pump will be cut according to the needs of the impeller, so as to meet the actual needs, at this time, with the power of the motor will also be reduced

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