10 Stirring Tank Manufacturers in 2023
This section provides an overview for stirring tanks as well as their applications and principles. Also, please take a look at the list of 10 stirring tank manufacturers and their company rankings.
Table of Contents
What Are Stirring Tanks?
Stirring tanks represent tanks used for stirring. They are used to mix dissimilar solids, liquids, and gases.
The structure consists of a motor, reduction gear, shaft seal, shaft, agitator blades, baffles, and the tank.
The shape of a stirring tank is indicated by the ratio of the liquid surface height to the tank's inner diameter. Generally, a ratio of 1.0 to 1.5 is considered efficient. If the tank is too thin, the top and bottom agitation will not work well and a concentration gradient will easily occur, while if the tank is too thick, the tank diameter will become too large and the tank will need to be thicker.
Uses of Stirring Tanks
Depending on the use of the stirring tank, related components such as coils, jackets, baffles, and nozzles are installed. When installing these parts, they must not interfere with the flow in the tank and must be structurally strong.
Coils and jackets are used for heating and cooling. Cooling water or steam is passed through them. Baffles are used to add flow in the vertical direction as well as in the horizontal direction to the axis. They are also called "obstruction plates." The effect is achieved by installing 2 to 8 baffles per tank. Nozzles are often used to fill and empty the tank. Gas can also be added through nozzles at the bottom of the tank for bubbling.
Principle of Stirring Tanks
A motor rotates to transmit power to the shaft. If a speed reducer is attached, the motor will decelerate and increase torque accordingly. The inside of the tank can be sealed without interfering with the rotation, thanks to the shaft seal. Generally, gland packing or mechanical seal is used for the shaft seal.
When the shaft rotates, the agitator blades rotate simultaneously. Thrust and radial forces, depending on the shape of the stirring tanks' blades, cause the liquid in the stirring tank to be agitated. The agitated liquid is further dispersed by baffles attached to the tank. The baffles are used to change the flow from laminar to turbulent. Baffles are usually used for laminar flow, especially in the agitation of low viscosity areas.
The tank shape affects how well the liquid is dispersed. The shape of the tank bottom has a particularly large effect on liquid accumulation. A 2:1 semi-elliptical or 10% dish shape is commonly used. If the ratio of the liquid surface height to the tank's inner diameter is 1.2, the tank inner diameter can be calculated by multiplying the liquid volume by 1.14 and then multiplying by 1/3.
About Stirring Tanks' Agitation Blades
Agitation blades are the part of a stirring tank that transmits the rotation of the motor to the tanks and agitates the raw materials. The role of the agitator blades can be broadly divided into two: "shearing action," which provides shearing force to various parts of the Stirring tanks, and "circulating action," which provides the formation of a circulating flow. Shear force is a force like cutting something with scissors.
When selecting an agitating blade, it is necessary to select one with the optimum balance to achieve the objective based on the viscosity of the material to be agitated.
The following is a list of typical agitation blades used in stirring tanks.
- Propeller Blades
Propeller blades are agitation blades with a three-winged shape used on ships. They are not suitable for agitating high-viscosity materials, but are used to prevent sedimentation of individual particles in low-viscosity liquids. They are also widely used as standard agitation blades due to their cost and compactness. - Disk Turbine Blade
Disk turbine blades are agitation blades with several blades attached to a disk. Although they consume a large amount of power, they can be used in a wide range of applications, such as agitation while pulverizing solids and agitation in which reactions such as gas dispersion and absorption occur, because of the large circulation and shear action they generate. - Anchor Blade
Anchor blades are agitation blades shaped like a ship's anchor. Generally, these are agitation blades that are shaped from the bottom of stirring tanks to the walls. It can agitate even high-viscosity materials, but its agitation capacity is not that high compared to other agitation blades.
Stirring Tanks Agitation Method
There are several types of agitation methods for stirring tanks.
- Central Agitation
This is an agitation method in which the central axis of the agitating blade is vertically attached to the center of the stirring tank. This is a general method that can be expected to produce uniform flow. - Eccentric Inclined Agitation
This is an agitation method in which the agitator blades are mounted at an angle to the bottom of the stirring tank, rather than at the center. This method generates good turbulent flow even without baffles. - Bottom Agitation
This is an agitation method in which the agitation blades are attached from the bottom of the stirring tank. This method has the advantage of eliminating the need for a long shaft when the agitation layer is large.
List of 10 Stirring Tank Manufacturers
*Including some distributors, etc.
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- United States of America
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Shree Bhagwati Group of Companies
Mixing Tank
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Karadani Engineering Pvt Ltd
Electric Heating Mixing Tank
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JH Stålindustri A/S
Stainless steel mixing tanks
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Frank Berg industrial supplies BV
Stainless steel mixing tanks
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JP Sons Engineering
Stainless Steel Mixing Vessel
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Cedarstone Industry
Mixing Tanks
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Wenzhou Ace Machinery Co., Ltd
Mixing Tank
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Charmi Engineering
Stainless Steel Liquid Mixing Tank
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Stirring Tank Manufacturer Ranking
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