JPS61200840A - Stirring impeller - Google Patents

Abstract

PURPOSE:To obtain a stirring vane stirring a low viscosity liquid without scattering the same and excellent in durability, by radially providing a plurality of blades having leading ends subjected to torsional molding to the peripheral surface of a rotor in an upright state so as to be orthogonal to the center axis of the rotor and providing a ring shaped protector to the leading ends of said blades. CONSTITUTION:A proper number of vanes 2 having leading ends subjected to torsional molding are provided to the peripheral surface of a rotor 1 (e.g., a hexagonal nut) attachable to the drive shaft of a stirrer receiving rotary driving and a ring shaped protector 3 is provided to the vanes 2 so as to be capable of sufficiently cover the leading ends thereof. Because the upright providing parts 5 of the vanes 2 are parallel to a rotary direction, force for scattering a liquid to a radial direction is not applied and the mixing of air bubbles is eliminated. Stirring force becomes max. at the leading ends 6 of the vanes 2 and slight force for scattering the liquid to a radial direction is blocked by the protector 3. Because the protector 3 has a ring shape, the circumference is not damaged and the damage of a container is prevented. because a structure is simple, cleaning is easy and durability is excellent.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a stirring impeller, which is mainly used to stir low-viscosity liquids, and is attached to a stirrer, driven to rotate, and immersed in the low-viscosity liquid. When stirred, the low viscosity liquid is not scattered around, and the container containing the liquid can be stirred without being damaged or destroyed, and it is easy to shake and has excellent durability. The invention relates to a stirring impeller that has a

[Technical Background of the Invention and its Problems 1] Conventionally, stirring impellers that are attached to a stirrer and stir a liquid have been provided in various markets.

Among these, an agitation impeller commonly referred to as a sawtooth impeller 11 shown in FIG. 5 is provided on the market as a device that agitates liquid without scattering it.

This sawtooth blade 11 is made of a substantially circular steel plate or the like to form the main body 14.
The outer periphery of the main body 12 is suitably equally divided and incisions are made to form blades 13, and the blades 13 are alternately bent at right angles to both sides of the main body 12.

However, when the saw blade 11 is rotated to stir a low-viscosity liquid, the liquid can be stirred without any spatter, but if the liquid to be actually stirred is, for example, paint, thinner or a thinner liquid may be used. Since water is added and stirred, the paint and IT9 solution are not mixed at the beginning of stirring, so there are soft parts of the thinner and hard parts of the paint in the liquid, and these soft parts and hard parts are separated. The saw blades 11 are often shaken by the blades 13 bent at right angles, and are extremely unstable, and in extreme cases, they may be blown off.

For this reason, the blade 13 comes into contact with the container containing the liquid during agitation, causing damage to the container, and as the blade 15 is used, the tip of the blade 15 wears down and becomes sharp. This is an extremely dangerous situation. When cleaning after use, there is a risk of damaging the brush etc. or cutting one's hand due to the sharp blade-like part, and since the blades 13 are bent alternately. It had many corners and was very difficult to clean.

In addition, a stirring impeller with a simple structure as shown in FIG. 6 was prototyped and various experiments were conducted.

This stirring impeller has plate-shaped blades 1 on the circular surface of the rotating body 14.
5 is erected at a slight angular inclination with respect to the central axis of the rotating body 14, and this blade 15 is twisted.

However, when a low-viscosity liquid is stirred by this impeller, it is stirred at all positions of the blades 15 from the vicinity of the rotating body 14 to the tip, and the angle of the blades 15 is not aligned with the central axis of the rotating body 14 near the rotating body 14. Since the liquid is erected in a slightly inclined state, a force is applied to disperse the liquid from this portion toward the tip of the blade 15 while stirring. Therefore, since the liquid has a low viscosity, there is a drawback that the liquid scatters around during stirring.

In addition, near the rotating body 14 where the stirring action is small, a space is generated behind the rotational movement of the blade 15 in the liquid, so when the liquid flows into that space, air bubbles are mixed into the liquid, and the stirring action is small. However, it had the disadvantage of being contaminated with a lot of air bubbles.

[Objective of the Invention 1] Therefore, in view of the above-mentioned drawbacks, the present invention aims to provide a method for stirring a low-viscosity liquid without scattering the liquid to the surroundings and without damaging the container containing the liquid. It was created with the aim of providing something that is easy to clean and has excellent durability.

[Summary of the Invention] In order to achieve the purpose stated in the paper, the present invention includes a rotating body that can be attached to the blade drive shaft of a rotating agitator, and a rotating body made of steel plate or the like on the circumferential surface of the rotating body. an appropriate number of stirring blades arranged radially at right angles to the central axis of the stirring blade, and twisted and formed so that the tips are at an appropriate angle to the central axis, and each of these stirring blades. the tip of which is internally fixed and arranged concentrically with the rotating body,
The structure consists of an annular protector formed to have a width that can cover the tip of the stirring blade.

[Embodiment of the Invention] An embodiment of the invention will be described below with reference to the drawings.

That is, the reference numeral 1 shown in the figure is a rotating body, which is made of a hexagonal nut, for example, and has a size that allows the female screw 4 of this nut to be screwed into the screw of the blade drive shaft of the stirrer (not shown). shall be.

Then, on the circumferential surface of the hexagonal nut serving as the rotating body 1,
A stirring blade 2 made of a steel plate, a stainless steel plate, or the like is erected and fixed in a radial direction with respect to the central axis of the rotating body 1 on the surface of one fan.

As shown in FIG. 2, this stirring blade 2 is erected in an upright portion 5 with its steel plate perpendicular to the central axis of the rotating body 1, and its tip 6 is shown in FIG. As shown, it is twisted to form an appropriate angle with respect to the central axis of the rotating body 1. This angle can be set as appropriate, for example, from 0° with no twist at all, up to 90' in 10° increments, and W
It is used depending on the level of stirring power required.

Moreover, the tips 6 of each of the stirring blades 2 are fixed on the inside of a protective body 3 which is made of a ring-shaped steel plate with an appropriate width.
is arranged concentrically with the rotating body 1. The width of this protector 3 is set to be the same as or greater than the width of the tip 6 of the stirring blade 2 in the central axis direction, so that when the tip 6 of the stirring blade 2 is internally fixed, this tip 6 is sufficiently It is intended to be able to cover the

When the stirring impeller S formed in this manner is attached to the blade drive shaft of the stirrer and immersed in a low-viscosity liquid and rotated, the stirring blades 2 are formed at right angles to the axis of rotation at the upright portion 5 of the rotating body 1. In other words, since it is parallel to the rotating direction of the rotating body 1, the liquid is stirred only by the adhesive resistance of the surface of the stirring blade 2, and no force is applied to scatter the liquid in the radial direction, and no space is generated behind the stirring blade 2, so air bubbles are generated. There is no need to mix. Then, as the stirring blade 2 is twisted toward the tip 6, the stirring force increases due to the twisting, and the stirring force reaches its maximum at the tip 6, as if a rod or plate were placed at the tip 6 of the stirring blade 2. The liquid is stirred only by these rods or plates. Therefore, even if the stirring force is large, almost no force is applied to scatter the liquid in the radial direction.

Moreover, by providing the protector 3, the protector 3 covers the tip 6 of the stirring blade 2.
The slight force that causes the liquid to scatter in the radial direction is also blocked by the protector 3 and can be eliminated by its rotational force. Since the protector 3 is provided, the tip 6 of the stirring blade 2 is not directly exposed, and since the protector 3 is annular, there is no possibility of damaging the surrounding area. Therefore, it is extremely safe and does not damage the container containing the liquid. Further, since the liquid can be stirred by the viscous resistance between the protector 3 and the liquid, the stirring force can be further increased, and since the structure is very simple B, it is easy to clean.

The nut of the rotating body 1 may have a female thread 4 that matches the blade attachment part of the blade drive shaft of various hand-held agitators commercially available from various power tool manufacturers, but as shown in FIG. As shown, the nut may be of a type in which the female thread 4 is eliminated and the nut is fixed from the side with a fixing screw 7.

In addition to this, it goes without saying that any type of rotary body 1 may be used as long as it can be attached to the blade drive shaft of an agitator.

In reality, it can be attached to hand-held stirrers of various companies with nuts of the old size 0 or 12 or fixing bolts 7 from the side as described above. Since the number of rotations varies depending on the hand-held stirrer of each company, in that case, optimal stirring can be obtained by appropriately selecting the angle of the tip 6 that matches the usage condition each time. If you want to further increase the stirring power, you can increase the stirring power by increasing the width of the stirring blades 2 and the protector 3, or by increasing the diameter of the entire stirring impeller. The stirring force can be reduced by reducing the plate width or diameter.

Then, in order to indicate the twist angle of the tip 6 of the stirring blade 2 at an appropriate place on the stirring impeller S, for example, in the case of 0°, 0.10
101 for @... 90 for 90'' is very convenient for selection when using.

In addition, it can be used in a wide range of applications, and in addition to stirring paints, it can also be used, for example, to stir eggs in food production and other liquids. In that case, from a hygienic point of view, it is better to form the stirring blade IIS from stainless steel.

[Effects of the Invention] The present invention configured as described above includes a rotating body 1 that can be attached to the blade drive shaft of a rotating agitator, and a rotating body made of a steel plate or the like on the circumferential surface of the n-rolling body 1. The rotating body consists of a suitable number of stirring blades 2 which are radially arranged perpendicularly to the central axis of the rotor 1, and which are twisted and formed so that the tips are at an appropriate angle with respect to the central axis. 1, that is, near the circumferential surface of the rotating body 1, the stirring blades 2 are arranged perpendicular to the central axis of the rotating body 1. Even when the liquid is rotated and stirred, no force is applied to the liquid to be stirred in the radial direction of the rotating body 1, and no air bubbles are mixed in this part, and a large stirring force is generated near the tip 6 of the rotating body 1. Therefore, it is as if a rod, plate, etc. were arranged at the tip 6 and rotated, and almost no force is applied to scatter the liquid in the radial direction. Furthermore, since the structure is simple and strong, it is easy to clean and has excellent durability.

Then, a ring-shaped protector 3 is attached to the right side, in which the tips of each of the stirring blades 2 are internally fixed and arranged concentrically with the rotating body 1, and has a width that can cover the tips of the stirring blades 2. Therefore, the tip 6 of the stirring blade 2 is not directly exposed to the outside, and therefore the tip 6 does not become a sharp blade, which is very safe from a safety standpoint. neither will it destroy it. Moreover, the force that causes the liquid to scatter in the radial direction, which is generated slightly at the tip 6 of the stirring blade 2, can be completely suppressed by the protector 3, and the stirring force can be increased by the viscous resistance.

As explained above, according to the present invention, when stirring a low-viscosity liquid, it is possible to stir the liquid without scattering it at all and with very little mixing of air bubbles, and also when stirring the liquid. It does not damage or destroy the container in which it is stored, is highly durable, has a very simple structure, and has various excellent effects such as being easy to clean and clean. be.

[Brief Description of the Drawings] Figures 1 to 4 show embodiments of the present invention, with Figure 1 being a perspective view and Figure 2 being viewed from the ■-■ arrows shown in Figure 1. Figure 3 is a cross-sectional view taken along the arrow line.
FIG. 6 is a perspective view of a conventional impeller. S... Stirring impeller, 1... Rotating body, 2... Stirring blade, 3... Protector, 4... Female screw, 5... Standing part, 6... Tip, 7...Fixing bolt, 11...Sawtooth blade, 12...Main body, 13...
Blade, 14...Rotating body, 15...Blade.

Claims (1)

[Claims] 1. A rotating body that can be attached to the blade drive shaft of a rotating agitator, and a rotating body made of steel plate or the like and radially erected at right angles to the central axis of the rotating body on the circumferential surface of this rotating body, An appropriate number of stirring blades are twisted and formed so that the tips thereof are at an appropriate angle with respect to the central axis, and each tip of the stirring blades is internally fixed and arranged concentrically with the rotating body. A stirring impeller comprising: a ring-shaped protector having a width that can cover the tip of the stirring impeller;