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A differential agitator is a special type of mixing agitator that creates a controlled pressure difference—low pressure at the top and high pressure at the bottom—so liquid is pulled in (suction) through an inlet and then pushed out (discharge) through an outlet. This guided circulation improves tank-wide mixing and helps reduce common problems like vortex formation and cavitation.
One line, super simple:
It is a mixer that pulls liquid in from one side and pushes it out from another, so the whole tank mixes better.
| Language | Word Or Phrase Used | Simple Explanation In Respective Language | What It Relates To |
|---|---|---|---|
| Hindi | डिफरेंशियल एजीटेटर | यह एक ऐसा मिक्सर है जो दबाव का फर्क बनाकर तरल को अंदर खींचता और बाहर निकालता है, ताकि अच्छे से मिक्सिंग हो। | पानी उपचार, केमिकल टैंक |
| Marathi | डिफरेंशियल एजीटेटर | दबावातील फरक तयार करून द्रव आत ओढणे आणि बाहेर सोडणे, त्यामुळे मिक्सिंग जलद व एकसारखी होते. | उद्योगातील मिक्सिंग |
| Tamil | டிஃபரென்ஷியல் அஜிடேட்டர் | அழுத்த வேறுபாட்டால் திரவத்தை உள்ளே இழுத்து வெளியே தள்ளி சமமாக கலக்கும் இயந்திரம். | நீர் சுத்திகரிப்பு, தொழிற்சாலை |
| Kannada | ಡಿಫರೆನ್ಶಿಯಲ್ ಅಜಿಟೇಟರ್ | ಒತ್ತಡದ ವ್ಯತ್ಯಾಸದಿಂದ ದ್ರವವನ್ನು ಒಳಗೆ ಎಳೆದು ಹೊರಗೆ ಬಿಡುವ ಮಿಕ್ಸರ್, ಸಮ ಮಿಶ್ರಣಕ್ಕೆ ಸಹಾಯಕ. | ರಾಸಾಯನಿಕ ಮತ್ತು ನೀರು ಟ್ಯಾಂಕ್ |
| Bengali | ডিফারেনশিয়াল এজিটেটর | চাপের পার্থক্য তৈরি করে তরলকে ভেতরে টানে এবং বাইরে ছাড়ে, ফলে ভালোভাবে মেশে। | পানি শোধন, কারখানা |
| Gujarati | ડિફરેનશિયલ એજિટેટર | દબાણનો ફરક બનાવી પ્રવાહીને અંદર ખેંચે અને બહાર કાઢે, એટલે મિક્સિંગ સમાન થાય. | ઇન્ડસ્ટ્રીયલ મિક્સિંગ |
| Telugu | డిఫరెన్షియల్ అజిటేటర్ | ఒత్తిడి తేడాతో ద్రవాన్ని లోపలికి లాగి బయటకు పంపి సమంగా కలుపుతుంది. | వాటర్ ట్రీట్మెంట్, కెమికల్ ప్లాంట్ |
| Malayalam | ഡിഫറൻഷ്യൽ അജിറ്റേറ്റർ | മർദ്ദ വ്യത്യാസം ഉപയോഗിച്ച് ദ്രാവകം അകത്ത് വലിച്ചെടുക്കുകയും പുറത്തേക്ക് തള്ളുകയും ചെയ്ത് നല്ല മിശ്രണം ഉണ്ടാക്കുന്നു. | വ്യാവസായിക മിശ്രണം |
Note: Technical words are kept readable for your easy understanding, it is not overly translated.
Imagine stirring a big bucket of water with a spoon. Sometimes the water spins and forms a "hole" in the middle like a mini whirlpool. That's a vortex. It looks cool, but mixing becomes uneven.
A differential agitator is like a smart stirrer that pulls water in from one side and pushes it out from another side using pressure difference. So even corners and the bottom get mixed properly without making a big whirlpool.
Relatable example: Like a water pump in a cooler that keeps moving water so the temperature becomes even everywhere.
In many industrial tanks, a normal stirred tank mixer can create a strong vortex, which reduces uniform mixing and may increase cavitation risk. This matters because poor mixing can cause:
Also common industry agitator types (for comparison/semantic coverage): helical, turbine, anchor, marine impeller, curved blade turbine.
| Part | What it does | Simple example |
|---|---|---|
| Internal container | Controls suction and discharge flow | Like a channel for water movement |
| Upper impeller group | Creates low pressure, pulls liquid in | Suction zone |
| Lower impeller group | Creates high pressure, pushes liquid out | Discharge zone |
| Suction port (inlet director) | Entry for liquid | Liquid enters internal container |
| Discharge port (outlet director) | Exit for liquid | Liquid exits to main tank |
A key feature in differential agitator design is an internal cylindrical container placed inside the main tank. This is why people search for differential agitator internal container: it's the part that makes the circulation controlled.
Inside/around this internal container are:
A differential agitator is described as an electro-mechanical mixing setup with two shafts and two impeller groups (upper and lower) working within/around the internal container.
Typical design notes to include (for semantic coverage and technical clarity):
If someone searches differential agitator working principle or suction discharge agitator, they're looking for this core idea:
A differential agitator creates two zones:
Explain it like a flow story (beginner-friendly) and reference the internal container diagram (like "Figure 3.1" style in the original paper):
Engineers often ask: how to calculate Reynolds number for agitator because Re tells whether mixing is more laminar or turbulent.
Assume: ρ = 1000 kg/m³, N = 3 s⁻¹ (~180 rpm), Da = 0.2 m, μ = 0.001 Pa·s
So Re is very high → typically turbulent mixing, which is generally easier and more uniform.
| Factor | Normal agitator | Differential agitator |
|---|---|---|
| Vortex in tank | Common | Reduced in main tank |
| Need for baffles | Often required | Often not needed |
| Cavitation risk | Higher | Lower |
| Mixing uniformity | Can have dead zones | Better circulation |
People often search: differential agitator vs normal agitator, why baffles are used in agitator tanks, and causes of cavitation in agitators.
A fluid differential agitator aims to:
Practical areas where differential agitators and guided-circulation mixing systems matter:
Context entities (examples, not claims): India's large water initiatives like Jal Jeevan Mission increase attention on reliable treatment and dosing practices.
They are mixers that use a pressure difference to pull liquid in through suction ports and push it out through discharge ports, improving circulation and reducing vortex.
Fluid differential agitators use an internal container with suction and discharge ports, reducing vortex in the main tank and improving mixing uniformity.
Because circulation is guided through the internal container, shifting vortex effects away from the main tank region.
Often no, because the design reduces vortex and improves flow without relying on baffles.
Suction ports pull liquid into the internal container (low-pressure zone) and discharge ports push it out (high-pressure zone) to drive circulation.
A 4-blade pitched impeller at 45° (pitched blade turbine / PBT).
Water treatment (lime dosing in STP/ETP), chemical mixing, pharma blending, food processing, and paper/pulp mixing.
Vortex, bubbles/air entrainment, cavitation risk, dead zones, and reduced mixing efficiency.