Overhead stirrer - description, principle of operation, device and reviews

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2018-03-27 09:54:12

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Equipment that performs homogenizers function is overhead stirrer. This device is one of the most popular among any other laboratory equipment. To use this equipment it is possible for ingredients that are characterized by different density, weight, structure.

General description

To successfully interact with all these substances, there is a large variety of modifications for wereprivate stirrer. Most often, the stirrer with a top drive is used to mix several components in a homogeneous mixture with very high viscosity. The use of this unit due to the fact that the power of the motor is quite high, and that helps him to cope with substances having a greater density and viscosity. This device has some following features:

  • Due to the high power of the device, the homogenization process is quite fast.
  • The Efficiency of the device.
  • Have the ability to adjust the speed at which the overhead stirrer to mix the substances.
  • The Device is simple to laboratory glassware. In other words, mixing substances can be bottled into flasks, beakers, bottles and other appliances.
  • You can use the mixer in order to produce dispersions and emulsions, which are used for research purposes or in pharmaceuticals.
Overhead stirrer

Digital devices

Currently available digital overhead stirrers. Their peculiarity is that they are much easier to configure. In addition, they differ from mechanical in that their speed of homogenization, and therefore productivity, is higher. The speed and volume of the substance to be processed, depends on the power of the motor device. Those models that have the greatest rate of mixing, often used for mixing of aqueous solutions. Devices operating at low speeds, are used to homogenize more viscous substances.

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The work item in this equipment is a nozzle which and carries out the homogenization and fragmentation. The same nozzle can't use permanent and must be replaced. In modern models if you change the item parameters of the mixing takes place under control of automation, and the influence of the measuring instruments.

Laboratory overhead stirrer

Description positive qualities of the design

The Main advantage of wereprivate laboratory stirrers is that its working bodies, that is, the drive and the shaft seal node located in a dry area. This arrangement significantly increases the service life of the equipment and makes possible the repair and replacement of defective parts.

In addition, it may be noted that the use of verkhnemelovykh devices is not only limited to the laboratory. They are successfully applied in food, cosmetic, chemical and other industries.

Laboratory overhead stirrer with stand

Fixture Design

Overhead laboratory stirrer with tripod consists of the following parts: electric motor (motor-reducer), bearing, mechanical seal Assembly and the shaft and the agitator. It should be noted that the shaft and agitator are made of stainless steel, as they will be located in the liquid during operation. Steel grade which is used for the production of these parts is AISI 304 and 316, passed all sanitary and hygienic inspection. It is important to understand that some of the constructive part are selected depending on the purpose for which the device will be used. Such elements include drive high-speed or low-speed type, type of mixer, the size.

Among the common advantages of these devices are the following:

  • Wide range of use.
  • Long lifetime.
  • Completely sealed sealing units.
  • The instrument meets all sanitary-hygienic requirements.
  • Quality material used to manufacture stainless steel technical and food type.
Overhead stirrer Heidolph

Mixers domestic production

A Fairly common model of domestic production was the mixer with one tripod model PE-8100. The purpose of this equipment consists of mixing liquids in flasks, beakers, carboys and other containers. And with it the possibility of the preparation of emulsions and dispersions.

Mixing element for wereprivate stirrer of this type is additionally equipped with a built-in control unit, which has large LCD display. A memory function settings, and protect the motor from overheating or overloading. In addition, there is a possibility of additional installation of a timer. The market has improved model of this device which is ergonomic.

Stirring element for wereprivate stirrers

Overhead stirrers Heidolph

The company is engaged in the production of a powerful stirrer Hei-TORQUE. Manufacturers of this equipment adhere to safety standards.

  • The First is the soft start. This feature seems insignificant, but it allows you to avoid splashing of the substance at the start of the works. If you remove the feature, possible loss of research products. The increase in speed is gradual.
  • Fixtures also have an additional shaft protection, which protects from the occurrence of various accidents.
  • Non-sparking Motor stirrer of the type that allows you to use it in an environment that is characterized by the presence of explosive fumes.
  • There is automatic protection of motor from overheating, which greatly helps in cases when the device for a long period of time is operated in a continuous mode. When the critical temperature the equipment will turn itself off.
  • The Starting and stopping of the device is performed using the touch panel, which helps to avoid accidental starts or stops during operation.
Repair wereprivate stirrers

Economy when using equipment

The Company Heidolph made sure to minimize the economic costs in the operation of the device. Reduction of material costs is achieved largely due to the fact that the case is completely sealed. It protects it from penetration into dust, moisture or corrosive vapors. Such a device prolongs the service life of the mixer by an average of 10 years. Natural, in this case, repair wereprivate agitators also carried out much less frequently, because there is no internal corrosion.

Reviews of the use of these devices, mostly positive. If the power selected is correct, then problems arise. As for mechanical devices, the owners also generally quite. It is noted that to disassemble and clean the equipment is easy. Some noted that use the same instruments for more than 10 years.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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