Pipeline mixer

>Product Introduction

The pipeline mixer, also known as a tubular static mixer, is highly effective in water supply and drainage, as well as environmental protection projects, for dosing various coagulants, flocculants, ozone, liquid chlorine, acid-base neutralization, and gas-water mixing. It is an ideal device for the instantaneous mixing of water and various chemicals, featuring rapid and efficient mixing, simple structure, energy savings, and compact size. Without requiring external power, water flow through the pipeline mixer produces three effects:分流, cross-mixing, and reverse swirl, enabling the added chemicals to disperse quickly and uniformly throughout the water body for instantaneous mixing. The mixing efficiency reaches 90–95%, which can save chemical usage by about 20–30%, significantly improving water treatment effectiveness and conserving energy.

The pipeline mixer generally consists of three mixing units (the number can be increased based on the characteristics of the mixed medium). Each mixing unit is a 180° twisted fixed spiral blade (or 90° cross-inserted blade), available in left-hand and right-hand rotations. Adjacent units have spiral blades rotating in opposite directions and are offset by 90°. To facilitate the installation of spiral blades, the FRP cylinder is made into two semi-circular parts, connected with flanges at both ends, and the gaps are bonded with epoxy resin to ensure sealing. The construction of pipeline mixers made from other materials may vary.

The spiral blades of the pipeline mixer remain stationary, with only the mixed materials or media in motion. Fluids passing through it experience pressure drop without requiring external energy. The mixing is achieved primarily through flow division, radial mixing, and reverse rotation, with the two media continuously and vigorously blending and diffusing.

1. Mixing various coagulants and flocculants in urban domestic water and industrial water supply treatment;

2. Mixing various coagulants and flocculants in urban domestic sewage and industrial wastewater treatment;

3. Gas-water mixing and dosing of liquid chlorine, ozone, and other disinfectants in water supply, drainage, and environmental protection projects;

4. Acid-base neutralization and mixing in industrial wastewater;

5. Mixing and homogenization treatment for various industrial wastewaters.

1. The diameter of the pipeline mixer is selected based on the economic flow velocity, generally calculated at 0.9–1.2 m/s. For diameters larger than 500 mm, the maximum flow velocity can reach 1.5 m/s. If conditions allow, increasing the diameter by 50–100 mm can reduce head loss;

2. The basic configuration of the pipeline mixer includes three mixing units, with a head loss of about 0.4–0.6 m. The number of units can be adjusted based on the mixed medium;

3. The internal water pressure of the pipeline mixer is designed for 0.1 MPa, but the equipment can be manufactured according to actual pressure requirements.

1. The pipeline mixer can be installed in any orientation: horizontally, vertically, or in other configurations;

2. When installed on overhead pipelines, the pipeline mixer must be fixed with pipe supports. For buried pipelines, it can be installed in inspection wells;

3. The piping for dosing chemicals should be designed by the user, following national water supply and drainage standard drawings. The flow velocity in the pipe must be greater than 1.0 m/s, and the pressure should be less than 0.2 MPa (for FRP material);

4. The dosing points for various chemicals should be located at the front end of the mixing unit of the pipeline mixer, at a distance greater than 0.3 meters.

>Technical Parameters 　　　(The table below shows standard data for FRP pipeline mixers, including dosing ports) Model Nominal Diameter (mm) Outer Diameter D1 Flange Outer Diameter D2 Length L(mm) Dosing Port (mm) Flow Velocity (m/s) Flow Rate (m3/h) Total Head Loss (Δh/m) Reference Weight (kg) UPVC FRP Carbon Steel Rubber-Lined Stainless Steel GH-50 DN50 Ø60 Ø165 600 DN15 < 1 < 6.84 　 1.5 4 - 6.5 GH-65 DN65 Ø75 Ø185 650 DN15 < 1 < 11.88   2 4.5 - 9.5 GH-80 DN80 Ø90 Ø200 700 DN15 < 1 < 18.08 　 3 6 - 10.5 GH-100 DN100 Ø110 Ø220 800 DN15 < 1 < 28.08 　 4 8.5 - 16 GH-125 DN125 Ø140 Ø250 900 DN20 < 1 < 43.92   7 11 -   GH-150 DN150 Ø162 Ø285 1000 DN20 < 1 < 63.36 　 9 15 -   GH-200 DN200 Ø212 Ø340 1300 DN25 < 1 < 108 0.076 19.5 23 -   GH-250 DN250 Ø264 Ø395 1500 DN25 < 1 < 180 0.079 35 34 -   GH-300 DN300 Ø314 Ø445 1600 DN25 < 1 < 262.8 0.076   44     GH-350 DN350 Ø366 Ø505 1700 DN25 < 1 < 360 0.4 - 60     GH-400 DN400 Ø416 Ø565 2000 DN25 < 1 < 468 0.67 - 76 304   GH-450 DN450 Ø468 Ø615 2100 DN25 < 1 < 589   - 90   285 GH-500 DN500 Ø518 Ø670 2200 DN32 < 1.5 < 1098 0.91 - 103     GH-600 DN600 Ø620 Ø780 2600 DN32 < 1.5 < 1512 0.95 - 138 562   GH-700 DN700 Ø720 Ø895 2900 DN40 < 1.56 < 2160 0.98 - 173     GH-800 DN800 Ø820 Ø1015 3300 DN40 < 1.59 < 2880 1.01 - 237     GH-900 DN900 Ø922 Ø1115 3600 DN40 < 1.57 < 3600 0.99 - 307     GH-1000 DN1000 Ø1024 Ø1230 4000 DN65 < 1.53 < 4320 0.94 - 352     GH-1100 DN1100 Ø1126 Ø1340 4400 DN65 < 1.53 < 5040 0.94 - 525     GH-1200 DN1200 Ø1228 Ø1455 4700 DN80 < 1.60 < 6510 1.03 - 664     GH-1300 DN1300 Ø1332 Ø1575 5100 DN80 < 1.60 < 7641 　 - 885     GH-1400 DN1400 Ø1436 Ø1675 5500 DN80 < 1.60 < 8862 1.05 - 1129     GH-1500 DN1500 Ø1540 Ø1785 5900 DN80 < 1.60 < 10173 　 - 1438     >Selection Reference   UPVC FRP Carbon Steel Rubber-Lined Stainless Steel Specification mm DN50～DN300 DN50～DN1500 DN300～DN1500 DN50～DN1500 Pressure Resistance 1.0MPa, 1.6MPa 0.2MPa 1.0MPa, 1.6MPa 1.0MPa, 1.6MPa Operating Temperature -10～+60℃ -10～+70℃ -10～+100℃ -10～+100℃ Corrosion Resistance Good Good Good Good Appearance Aesthetic Average Average Aesthetic Price Lowest Low High Relatively High Delivery Time Shortest Long Relatively Long Long Weight Lightest Light Heaviest Heavy Density 1.35～1.46g/cm3 1.8g/cm3 7.85g/cm3 7.93g/cm3 Internal Structure DN50～DN100 Spiral Structure DN125～DN300 Cross-Inserted Plate Structure Spiral Structure Cross-Inserted Plate Structure Cross-Inserted Plate Structure