JPS6218262Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is related to the structure of the blades in the stirrer.
More specifically, the present invention relates to an improvement in the blades of a stirrer that improves the efficiency of stirring liquid.

As conventional stirring blades, paddle-shaped blades as shown in FIG. 1 and screw-type blades as shown in FIG. 2 are generally used. The liquid is mixed by the stirring blade by stirring the entire liquid near the blade horizontally or vertically as shown by the arrows in the figure.

However, in the case of such conventional stirring blades, the contact area with the liquid is increased in order to improve the efficiency of stirring the liquid, but on the other hand, the contact resistance is large due to the mixing caused by the large flow of the liquid. Therefore, in order to improve the stirring efficiency, it is necessary to increase the stirring driving force, which requires a large amount of equipment and increases costs, and mixing between the upper and lower parts is not always effective.

This idea was devised by focusing on the conventional problems, and it is a stirrer that efficiently stirs the entire liquid held in the tank and locally, and can be manufactured at low cost with a simple structure. The purpose is to provide a structure for a wing.

In order to achieve the above object, this invention connects a plurality of pipe blades in an annular manner at the tip of a rotary drive shaft via a support member around the rotary drive shaft, and connects both ends of each pipe blade in the rotating direction. The gist is that it is bent symmetrically in the vertical direction.

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

In FIG. 3, reference numeral 1 indicates a tank of an agitator, and in the center of the tank 1, a rotary drive shaft 4, which is driven via a deceleration motor 2 and a bearing member 3, is vertically installed.

As shown in FIG. 4, a hollow arc-shaped pipe blade 6 is attached to the tip of the rotary drive shaft 4 in an annular manner through a plurality of support members 5 having a predetermined length. There is.

As shown in FIG. 5, the pipe blade 6 has both ends of a pipe of a predetermined length bent symmetrically in the vertical direction with respect to the rotating direction, and one end (the end on the rotating direction side) of the pipe is bent with the liquid W. The opening area is made large to facilitate the inflow of water. Note that the inlet opening area does not necessarily have to be large.

By forming the pipe blades 6 in this way, when the rotary drive shaft 4 is rotated via the reduction motor 2, the liquid W is moved from the center side of the tank 1 as shown in the arrow direction in FIG. It flows from the side of the buttful 7 installed on the inner wall of the tank 1, that is, from the inside of the tank 1 to the outside through the pipe blades 6, and at the same time flows from the bottom side of the tank 1 to the top side through the pipe blades 6. be. As a result, the liquid W in the tank 1 is efficiently stirred regardless of whether it is inside or outside, in the vertical direction, or in the circumferential direction.

Although the pipe blade 6 described above is formed into a cylindrical shape at the center, it is not limited to such a shape, and may have any shape as long as it is hollow.

Furthermore, if the pipe vanes 6 attached to the rotary drive shaft 4 are provided in multiple stages, the stirring efficiency can be further improved. However, it is also possible to make it variable depending on the operating conditions.

As mentioned above, this idea connects a plurality of pipe blades in an annular manner to the tip of a rotary drive shaft via a support member around the rotary drive shaft, and connects both ends of each pipe blade with respect to the rotating direction. Since it is bent symmetrically in the vertical direction, the entire liquid in the tank can be efficiently stirred without using a large driving force, making it extremely effective as an energy-saving stirrer.

Furthermore, since the configuration is relatively simple, it can be manufactured at low cost and maintenance is easy.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams of conventional stirring blades, Figure 3 is a longitudinal sectional front view of a stirrer implementing this invention,
FIG. 4 is a plan view taken along the - line in FIG. 3, and FIG. 5 is an explanatory diagram of the pipe blade. DESCRIPTION OF SYMBOLS 1... Tank, 2... Reduction motor, 3... Bearing member, 4... Rotation drive shaft, 5... Support member, 6
...Pipe wings.

Claims (1)

[Scope of utility model registration request] A plurality of pipe wings are connected to the tip of the rotary drive shaft in an annular manner via a support member around the rotary drive shaft, and both ends of each pipe wing are bent symmetrically in the vertical direction with respect to the rotating direction. The structure of the blades in the stirrer is characterized by: