JPH0422431A - stirring blade - Google Patents

Abstract

PURPOSE:To enhance function of an agitating element without enlarging an occupied space by providing integrally a propeller blade inside a turbine impeller blade. CONSTITUTION:A turbine impeller blade 3, a disk 4 and a propeller blade 5 are installed on an agitation shaft 2 provided in an agitation tank 1. Said turbine impeller blade 3 is disposed outside the propeller blade 5. The agitation shaft 2 is rotated to carry out radial flow type agitation by means of the turbine blade 3, while the propeller blade 5 carried out axial flow type agitation, agitating up or down in the rotating direction of the agitation shaft 2. Therefore, radial flow and axial flow type agitations can be carried out by one stage constitution, though an occupied space is small, to enhance the function of agitating element.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a stirring blade that improves the stirring function in a stirring device.

[Conventional technology]

Conventional stirring blades have turbine blades, paddle blades, propeller blades, etc. attached to a single or multi-stage stirring shaft, and the characteristics of each blade are either axial flow type or radial flow type. Therefore, when both functions were required, the wings were combined into multiple stages. Note that related devices of this type include, for example, Japanese Patent Application Laid-Open No. 60-646214g.

[Problem to be solved by the invention]

In the first half of the conventional technology, a main stirring blade and an auxiliary stirring blade are required because the wings are combined into multiple stages, and the mounting position of the auxiliary stirring blade with respect to the main stirring blade is determined so as not to interfere with the function of the main stirring blade. Due to the restrictions, there was little flexibility such as lengthening the stirring shaft and attaching it to the bottom of the stirring tank, and the scope of application was narrow.

In addition, a keyway was required to attach the auxiliary stirring blade, which increased the effort of disassembling and reassembling multiple units.

An object of the present invention is to improve the function of a stirring blade without increasing the space it occupies.

[Means to solve the problem]

In order to achieve the above object, a propeller blade is provided on the inner circumference of the turbine blade to form an integrated stirring blade.

[For production]

Turbine blades installed on the outer periphery perform radial type main stirring,
Propeller blades installed on the inner periphery perform axial flow type auxiliary stirring. Since these wings rt are integrated, they can perform both functions, albeit in a -19 state.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

1 and 2, a stirring shaft 2 provided in a stirring tank 1 is connected to a turbine blade 3. Disc 4. Propeller blades 5 are attached. The turbine blades 3 are arranged outside the propeller blades 5.

When the stirring shaft 2 rotates, the turbine blades 3 perform radial stirring, while the propeller blades 5 perform radial stirring of up or down depending on the direction of rotation of the stirring shaft 20.

Therefore, even though the -membrane configuration occupies a small space, radial flow type and axial flow type stirring can be performed, and the function of the stirring blade can be improved.

〔Effect of the invention〕

According to the present invention, by combining radial type stirring in which a flow is strongly generated in the radial direction due to the centrifugal action of the rotation of the turbine blades, and axial flow type stirring due to the axial thrust of the rotation of the propeller blades,
The effects of both can be combined.

In other words, radial agitation using turbine blades uses strong radial flow and shear to speed up the homogeneity of the mixture, and axial flow that is stirred up or down by propeller blades can promote heat transfer through vertical agitation. .

In addition, conventional turbine blades have disks, which tend to cause poor mixing of liquid in the space above and below the blade, but this can be solved by combining propeller blades, and the dead space at the bottom of the tank can also be eliminated. can.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the present invention, and FIG. 2 is a front view of the present invention.

Claims (1)

[Claims] 1. A stirring blade characterized in that a propeller blade is provided inside a turbine blade and is integrated with the blade.