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LQ3G Three Screw Insulated Asphalt Pump
LQ3G Three Screw Insulated Asphalt Pump
Product details
LQ3G Three Screw Pump Product Overview:
The LQ3G three screw pump is a rotary displacement pump that utilizes the principle of screw engagement. It relies on the rotating screw to mesh with each other inside the pump sleeve, enclosing the conveyed medium in the engagement chamber and continuously pushing it at a constant speed along the screw axis to the discharge port, providing stable pressure for the system.
The LQ3G three screw pump is suitable for various non corrosive oils, similar oils, and lubricating liquids. The viscosity range for transporting liquids is generally 3.0-760mm2/s (1.2-1000oE), and high viscosity media can be transported by heating to reduce viscosity. Its temperature does not exceed 350 ℃. The flow range is 0.2-600m3/h, and the maximum working pressure can reach 6.3MPa.
LQ3G Three Screw Pump Model Meaning:
LQ3G Three Screw Pump Product Features:
1. Simple structure: The pump itself consists of only three screws, but there are various structures formed. Generally, for small flow rates, the pump body and liner of 0.2-6.5m3/h pump are installed horizontally together, and the shaft seal is a mechanical seal. The pump liner with medium flow rate or above is fixed as a separate part inside the pump body. High flow pumps are often made into double suction structures. Depending on the medium being transported, there are two types of shafts: end face mechanical seals and packing seals. The prime mover of a marine pump is an AC marine motor.
2. Long lifespan: The main screw of a three screw pump is driven by an electric motor. There is a layer of oil film protection between the main and secondary screws, as well as between the screw and the liner. Due to the minimal mechanical friction of the pump, its lifespan can be considered semi permanent.
3. The liquid being transported undergoes axial uniform linear motion within the pump, resulting in low pressure pulsation, stable flow rate, and low noise. Due to the small inertia of the rotating parts, the starting torque and vibration are minimal.
4. Has high inhalation capacity.
5. To ensure the safety of pumps, motors, and piping systems, screw pumps with medium or higher flow rates are equipped with safety valves. When the pressure exceeds the set pressure of the safety valve, high-pressure oil will flow back to the inlet of the pump. Figure 1 and Figure 2 are schematic diagrams of two structures with and without safety valves.
Structural diagram of LQ3G three screw pump:
The main uses of LQ3G three screw pump are:
The LQ3G three screw pump is widely used in various industries such as petroleum, chemical fiber, metallurgy, machinery, power, machine tools, ships, glass, and highways.
The LQ3G three screw pump is suitable for conveying lubricating oil and lubricating liquids such as fuel oil, lubricating oil, hydraulic oil, crude oil, asphalt, and other similar oils.
The LQ3G three screw pump is used as a lubrication pump in the industrial field, a hydraulic pump in hydraulic systems, a conveying and booster pump in fuel systems, and a conveying and refueling pump in oil delivery systems.
The LQ3G three screw pump is divided into 5 series according to its purpose:
| Series code | Main purpose | Performance range | |
| Traffic (m)3/b) | Pressure (MPa) | ||
| LQ3G | Conveying 3-20oE lubricating oil, temperature ≤ 80oC， single suction | 0.6-49.8 | 2.5 |
| LQ3GR | Transport 3-50oE Heavy fuel, temperature ≤ 120oC， single suction | 0.6-49.8 | 2.5 |
| LQ3Gr | Conveying 1.2-5oE light fuel, temperature ≤ 120oC， single suction | 0.6-49.8 | 1.6 |
| LQ3GW | Transporting high viscosity heated fuel, temperature ≤ 150oC， single suction | 0.6-18.9 | 1.6 |
| LQ3GN | Transport 100oE high viscosity oil, temperature ≤ 80oC， single suction | 0.6-49.8 | 2.5 |
Performance parameters of LQ3G three screw pump:
| Pump model | pressure MPa |
internet traffic | rotational speed r/min |
Must have cavitation allowance m | efficiency % |
motor | ||
| m3/h | L/min | Power KW | model | |||||
| 25×4-46 | 1.0 2.5 |
0.8 0.6 |
13 10 |
1450 | 4 | 62 60.6 |
0.75 1.5 |
Y802-4 Y90L-4 |
| 1.0 2.5 |
2.0 1.6 |
33 26 |
2900 | 4.5 | 59.4 69 |
1.5 3 |
Y90S-2 Y100L-2 |
|
| 30×4-46 | 1.0 2.5 |
1.6 1.2 |
26 30 |
1450 | 4.5 | 63.5 61 |
1.1 2.2 |
Y90S-2 Y100L1-2 |
| 1.0 2.5 |
3.6 3.2 |
60 53 |
2900 | 5 | 60 69 |
2.2 4 |
Y90L-2 Y112M-2 |
|
| 36×4-46 | 1.0 2.5 |
2.8 2.4 |
46 40 |
1450 | 4.5 | 66 66.5 |
2.2 4 |
Y100L1 -4 Y112M-4 |
| 1.0 2.5 |
6.5 6 |
108 100 |
2900 | 5 | 60.5 72 |
4 7.5 |
Y112M-2 Y132S2-2 |
|
| 42×4-46 | 1.0 2.5 |
4.8 4.2 |
80 70 |
1450 | 5 | 62 73 |
4 4.5 |
Y112M-4 Y132S1-4 |
| 1.0 2.5 |
10.5 10 |
175 166 |
2900 | 5.5 | 61 72 |
5.5 15 |
Y132S1-2 Y160M2-2 |
|
| 45×4-46 | 1.0 2.5 |
6.3 5.9 |
106 99 |
1450 | 5 | 70 74 |
3 7.5 |
Y100L2-4 Y132M-4 |
| 1.0 2.5 |
13.5 13 |
225 217 |
2900 | 5.5 | 60 75 |
7.5 15 |
Y132S2-2 Y160M2-2 |
|
| 60×4-46 | 1.0 2.5 |
15.5 14.5 |
255 245 |
1450 | 5 | 71.3 74 |
11 15 |
Y160M-4 Y160L-4 |
| 1.0 2.5 |
32 31.5 |
533 525 |
2900 | 5..5 | 63 77 |
18.5 37 |
Y160L-2 Y200L2-2 |
|
| 70×2-46 | 0.6 1.0 1.6 |
24 23.5 22.5 |
400 390 370 |
1450 | 5 | 71 75 76 |
7.5 11 15 |
Y132M-4 Y160M-4 Y160L-4 |
| 70×4-46 | 1.0 2.5 |
24.5 13.5 |
108 392 |
1450 | 5 | 72.5 19 |
18.5 30 |
Y180M-4 Y200L-4 |
| 80×2-46 | 0.6 1.0 1.6 |
36.5 35 34.5 |
608 594 375 |
1450 | 5 | 72 75.5 76.5 |
11 18.5 22 |
Y160M-4 Y180M-4 Y180L-4 |
| 80×4-46 | 1.0 2.5 |
37 35 |
617 590 |
1450 | 5.5 | 72 78.1 |
30 45 |
Y200L-4 Y225M-4 |
| 100×2-46 | 0.6 1.0 1.6 |
72.5 71 69.5 |
1208 1183 1158 |
1450 | 5 | 73 77 79 |
22 37 45 |
Y180L-4 Y225S-4 Y225M-4 |
| 100×4-46 | 1.0 2.5 |
72.5 70 |
1208 1165 |
1450 | 5.5 | 73 78.5 |
55 75 |
Y250M-4 Y280S-4 |
| S100×3-27 | 0.6 1.6 2.5 |
72 70 69 |
1196 1160 1145 |
1450 | 6 | 62 72 74 |
22 55 75 |
Y180L-4 Y250M-4 Y280S04 |
| S120×3-27 | 0.8 1.5 2.5 |
123 120 115 |
2055 2010 1920 |
1450 | 6 | 74.5 76 78.5 |
55 90 132 |
Y250M-4 Y280M-4 Y315M-4 |
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