KR20140145732A - Non -contactless oil prevention type seal and oil mixing prevention type agitator - Google Patents

Abstract

The present invention relates to an agitator for preventing oil from mixing, comprising a mixing prevention cap formed on the outer surface of a rotation axis of a rotation part whose one end part is connected to a motor; and a ring-shaped mixing prevention protrusion formed along with the circumference of through holes of a mixing prevention cap base installed on the upper surface of an agitating container, thereby dropping oils (lubricants for motors and bearings) which flow downwards along the rotation axis to the mixing prevention cap base along the outer circumference of the mixing prevention cap and preventing oil from flowing into the agitating container which stores liquid, gas or solid powders by blocking the dropped oil to the mixing prevention cap base by the mixing prevention protrusion. In the present invention, the agitator has advantages in that oils (lubricants of the motor and the bearing) are prevented from flowing into the agitating container along the rotation axis by falling downwards along the outer circumference of the mixing prevention cap and by blocking the dropped oil to the mixing prevention cap with the use of mixing prevention protrusion, continuous friction is not released because the mixing prevention cap and the mixing prevention cap base are installed at a different position, thereby maintaining the consistent rotation resistance of the motor and increasing the longevity of the agitator while improving reliability since component damage is prevented.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a non-contact type oil seepage preventing seal and an oil-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agitator, and more particularly, to an agitation preventing type stirrer provided with a non-contact mixing prevention seal.

Generally, a stirrer is a device which mixes a liquid or a fluid solid into a container and mixes them, and is mainly used for quickly making uniform the components in the liquid.

Such a stirrer transmits the rotational power of the motor to the rotating shaft, and the stirring blade formed at the end of the rotating shaft rotates in the container to uniformly mix the liquid or the fluid solid.

FIG. 1 is a view showing a conventional stirrer. Referring to FIG. 1, the conventional stirrer includes a stirring barrel 10 for receiving liquid or a fluid solid, a motor 20 installed above the stirring barrel 10, A rotary shaft 30 having one end connected to the motor 20 and the other end inserted into the stirring bar 10 to form a stirring vane 31 at the end thereof; And a housing 51 which is fixed on the upper surface of the stirring bar 10 and surrounds the lip seal 40 and the rotary shaft 30. The rotary shaft 30 is rotatably supported by the rotary shaft And a rotary support portion 50 provided with a bearing 52 which is in close contact with the rotary shaft 30.

The motor (20) and the rotary shaft (30) are connected and fixed by a coupling (60).

The rotating shaft 30 is rotated by the driving of the motor 20 and the stirring wing 31 of the rotating shaft 30 is rotated to evenly mix the liquid and the fluid solid contained in the stirring bar 10.

At this time, the rotation shaft 30 rotated by the motor 20 is supported by the bearing 52 of the rotary support part 50 and is prevented from flowing.

The lubricating oil leaking from the motor 20 and the bearing 52 and falling down to the bottom (for example, lubricating oil for reducing the frictional resistance of the motor 20 and the bearing 52) is blocked by the lip seal 40 And is prevented from flowing into the stirring bar 10.

In addition, the lip seal 40 prevents other foreign substances from entering the inside of the agitating barrel 10.

Particularly, the lip seal 40 is made of a rubber material and is kept in close contact with the outer surface of the rotary shaft 30 to be rotated.

However, as described above, the structure for preventing oil or foreign matter from penetrating into the stirring bar 10 by using the lip seal 40 has the following problems.

The frictional resistance between the lip seal 40 tightly fixed to the rotary shaft 30 and the rotary shaft 30 is increased during the rotation operation of the rotary shaft 30 so that the manufacturing cost of the stirrer is increased by the large- This increases energy consumption and maintenance costs.

Secondly, when the stirrer is driven, the lip seal 40 is worn or damaged due to the frictional force generated between the rotary shaft 30 and the lip seal 40, and the lip seal 40 is damaged by the sealing function of the lip seal 40 (For example, lubricating oil) flows easily into the stirring barrel 10 along the rotating shaft 30, thereby causing contamination of the material in the stirrer by the oil.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a mixing prevention cap which is formed on an outer surface of a rotary shaft of a rotary part, one end of which is connected to a motor, (For example, a lubricating oil such as a motor or a bearing), which is moved downward along the rotation axis, is dropped into the mixing-preventing cap base along the outer surface of the mixing-preventing cap, and the oil Prevention type stirrer for preventing oil and foreign matter from flowing into an agitating cylinder for containing a liquid or a solid powder by intercepting the oil that has been mixed with the mixture to prevent mixing.

In order to accomplish the object of the present invention, the mixing-preventing type agitator according to the present invention is characterized in that the stirring-preventing type agitator according to the present invention comprises: a stirring bar which has a hollow shape and a vertical bar protrudes from the upper surface thereof; A motor fixedly installed at an upper end of the vertical bar and rotated; A stirring shaft having one end connected to the motor and the other end inserted into the stirring bar, a stirring vane formed at an end of the rotating shaft, and a mixing preventing member for guiding the oil to fall on the outer surface of the rotating shaft A rotating portion having a cap formed thereon; A rotary support fixed to the outer surface of the vertical bar to surround the rotary shaft; And an annular inclusion preventing chin for blocking the oil dropped from the mixing preventing cap from flowing into the through hole is formed around the upper portion of the through hole so as to allow the oil to pass through the through hole, And a cap base protruding from the bottom surface of the cap base.

In the mixing-preventing type agitator according to the present invention, the mixing-preventing cap of the rotating portion may have an annular separation-preventing projection portion which surrounds the mixing-preventing jig of the mixing-preventing cap base.

In the mixing preventing type stirrer according to the present invention, the mixing preventing cap of the rotating portion is formed such that its top surface is inclined downward from the center to the outside.

In the mixing-preventing type stirrer according to the present invention, the mixing-preventing cap base is formed such that its upper surface is sloped downward from the center to the outside.

In the non-contact type anti-tamper seal according to the present invention, an anti-jam cap is provided, one end of which is connected to the drive unit, the other end of which is inserted into the driven member, and the oil is guided to fall outside the rotary shaft A rotation support member installed to surround the rotation shaft and supporting rotation of the rotation shaft; And an annular mixing preventing member which is provided on the upper surface of the driven member and has a through hole for passing the rotating shaft through the central portion thereof and which prevents the oil dropped from the mixing preventing cap from flowing into the through hole, And a protrusion formed on the cap base.

The mixing-preventing type agitator according to the present invention prevents oil (for example, lubricating oil such as a motor and a bearing) from falling down along the outer surface of the mixing-preventing cap and flowing into the mixing cylinder along the rotating shaft, The falling oil is prevented from flowing into the stirring barrel by being blocked by the mixing stopper, and the mixing-preventing cap and the mixing-preventing cap base are spaced apart from each other by a predetermined distance so that continuous friction is not generated, There is an advantage that the reliability of the product is improved and the service life of the stirrer is greatly improved.

1 is a schematic cross-sectional view showing a conventional stirrer.
FIG. 2 is a perspective view of a mixing-preventing type agitator according to the present invention. FIG.
3 is an exploded perspective view of Fig.
4 is a side cross-sectional view showing a mixing-preventing type agitator according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The oil described in the present invention refers to a lubricating oil that leaks from a component installed in a stirrer such as a motor or a bearing.

In addition, the non-contact type anti-tamper seal according to the present invention can be rotated within the target portion to be driven by the driving unit. However, in the present invention, the driving unit is exemplified by a motor, the non-contact type anti- Let's take an example of installation.

2 to 3, the stirring bar 100 has a hollow shape with a vertical bar 101 protruding from its upper surface, and houses liquid, gas or solid powder therein.

A through hole 102 through which the rotation shaft 301 passes is formed at the center of the upper surface of the stirring barrel 100.

Preferably, the stirring barrel 100 is formed in a container shape in which an internal space for receiving a liquid, a gas, or a solid powder is recessed downward.

The motor 200 is fixedly mounted on the upper end of the vertical bar 101 and is rotated.

The motor 200 is rotated by receiving external power, and rotates the rotation shaft 301.

The motor 200 is preferably rotated in the forward and reverse directions.

The motor 200 is connected to the rotation shaft through a coupling 600.

The rotary part 300 is formed with a rotary shaft 301 having one end connected to the motor 200 and the other end inserted into the stirring cylinder 100. A stirring blade 302 is provided at the end of the rotary shaft 301 And a mixing prevention cap 30 is formed on the outer surface of the rotary shaft 301 to induce the oil to fall on the outer surface of the rotary shaft 301.

The rotation shaft 301 is rotated by the motor 200 to rotate the stirring vane 302 in the stirring barrel 100.

The rotating shaft 301 is rotated with its outer surface held by the rotating support portion 400.

The mixing-preventing cap 303 is integrally formed on the outer surface of the rotating shaft 301 and rotated simultaneously with the rotating shaft 301.

The mixing-preventing cap 303 guides the oil flowing along the rotating shaft 301 to fall outside the rotating shaft.

The top surface of the mixing-preventing cap 303 may be formed to be inclined downward from the center to the outside.

The mixing prevention cap 303 has an annular mixing preventing protrusion 303a protruding from the bottom surface thereof to surround the mixing preventing jig 502 of the mixing preventing cap base 500.

The mixing preventing protrusion 303a prevents the oil flowing along the outer surface of the mixing-preventing cap 303 from moving to the bottom of the mixing-preventing cap 303.

The rotation shaft 301 is connected to the motor by a coupling 600.

The rotation support portion 400 is fixed to the outer surface of the vertical bar 101 and surrounds the rotation shaft 301.

The rotation support portion 400 may be installed on the top of the mixing prevention cap 303 of the rotation shaft 301.

The rotation support part 400 is fixed to the outer surface of the vertical bar 101 and is formed with a housing 401 surrounding the rotation shaft 301. The rotation support part 400 is closely attached to the rotation shaft 301 inside the housing 401 A bearing 402 is formed.

The bearing (402) is installed between the housing (401) and the rotary shaft (301).

The bearing 402 supports the rotation of the rotation shaft 301 in a state of being in close contact with the outer surface of the rotation shaft 301.

The mixing-preventing cap base 500 is provided on the upper surface of the stirring barrel 100 and has a through hole 501 through which the rotating shaft 301 is passed at a central portion thereof. An annular inclusion preventing jaw 502 protruding from the through hole 501 is formed to prevent the oil dropped from the preventive cap 303 from flowing into the through hole 501.

The mixing stopper 502 blocks the oil falling onto the top surface of the mixing-preventing cap base 500 from flowing into the stirring barrel 100.

The mixing preventing tucks 502 are formed to be located inside the mixing preventing protrusions 303a of the mixing preventing caps 303. [

The top surface of the mixing-preventing cap base 500 is formed so as to be inclined downward from the center outward, and the oil is flowed outward along the inclined portion to prevent the oil from flowing into the stirring barrel 100.

The mixing-preventing type stirrer according to the present invention configured as described above is operated as follows.

4, when liquid, gas or solid powder is fed into the stirring barrel 100 and power is supplied to the motor 200, the motor 200 is rotated in the forward, reverse, or forward direction, Thereby rotating the rotary shaft 301 of the rotary part 300.

Then, the rotation shaft 301 is rotated while being supported by the rotation support part 400 to rotate the stirring wing 302 positioned in the stirring bar 100, and the stirring wing 302 is rotated The liquid, the gas or the solid powder contained in the cylinder 100 is evenly mixed.

The upper end of the rotary shaft 301 is supported by the bearing 402 of the rotary support part 400 and is prevented from flowing left and right.

At this time, the bearing 402 is fixed to the vertical bar 101 and supports the rotary shaft 301 in a state where it is installed inside the housing 401 surrounding the rotary shaft 301.

When the rotation shaft 301 is rotated by the above operation, oil (for example, lubricating oil) is leaked from the motor 200 and the bearing 402, and the oil flows downward along the rotation shaft 301 .

The oil is guided to the outer portion of the rotation shaft 301 along the outer surface of the mixing-preventing cap 303 of the rotating shaft 301 and dropped onto the upper surface of the mixing-preventing cap base 500.

The oil moved to the outer surface of the mixing-preventing cap 303 along the rotation axis 301 flows outward from the upper surface of the sloping mixing-preventing cap 303, Falls.

Thereafter, the oil dropped onto the top surface of the mixing-preventing cap base 500 is blocked by the mixing-preventing jaw 502 and is prevented from flowing into the stirring barrel 100 through the passage hole 102.

At this time, the oil dropped onto the top surface of the mixing-preventing cap base 500 is blocked by the mixing-stopping jaw 502 and flows outward along the top surface of the mixing-preventing cap base 500 which is inclined.

Although the non-contact type anti-tamper seal is used in the above embodiment, the non-contact type anti-tamper seal can be applied to various devices.

The oil is allowed to fall to the outside of the rotary shaft 301 by using the mixing prevention cap 303 as described above so that the oil flows into the mixing cylinder 100 into the mixing preventing mouth 502 of the mixing preventing cap base 500 The oil is prevented from falling down along the outer surface of the mixing-preventing cap 303 and flowing into the stirring barrel 100 along the rotating shaft 301, The oil is prevented from flowing into the stirring barrel 100 by being blocked by the mixing stopper 502 and the mixing preventing cap base 303 and the mixing preventing cap base 500 are separated from each other by a predetermined interval, The rotation resistance of the motor 200 is constant, and the breakage of the parts is prevented, thereby improving the reliability of the product and greatly improving the service life of the stirrer.

As described above, the non-contact immersion seal according to the present invention and the immersion-preventing type stirrer using the same are only one embodiment, and the present invention is not limited to the above-described embodiments. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

100: stirring tank 101: vertical bar
102: through hole 200: motor
300: rotating part 301: rotating shaft
302: stirring wing 303: mixing prevention cap
303a: Mixing prevention protrusion part 400: Rotation support part
401: housing 402: bearing
500: Mixing prevention cap base 501: Through hole
502: Mixing protector 600: Coupling

Claims (5)

A vertical bar 101 protruding from the upper surface in a hollow shape and containing therein a liquid, a gas or a solid powder;
A motor 200 fixedly installed at an upper end of the vertical bar 101 and rotated;
A stirring shaft 302 is formed at the end of the rotating shaft 301 and the other end of the stirring shaft 302 is connected to the motor 200. The other end of the stirring shaft 302 is inserted into the stirring barrel 100, A rotation part 300 having an outer surface of the rotary shaft 301 on which an oil immersion prevention cap 30 for inducing oil to fall outside the rotary shaft 301 is formed;
A rotary support 400 fixed to an outer surface of the vertical bar 101 to surround the rotary shaft 301; And
A through hole (501) for passing the rotation shaft (301) is formed at the center of the stirring barrel (100), and oil dropped from the mixing prevention cap around the through hole (501) An insertion-preventing cap base (500) protruding from an annular mixing stopper (502) for blocking entry into the through hole (501);
Wherein the agitator is configured to mix the mixed liquid with the mixed liquid. The method according to claim 1,
The mixing prevention cap (303) of the rotation part (300)
And an annular mixing preventing protrusion (303a) is formed on the bottom surface to cover the mixing stopper (502) of the mixing base (500). The method according to claim 1,
The mixing prevention cap (303) of the rotation part (300)
Wherein the upper surface is formed so as to be inclined downward from the center to the outer side. The method according to claim 1,
The mixing-preventing cap base (500)
Wherein the upper surface is formed so as to be inclined downward from the center to the outer side. And a cap 30 for preventing the oil from dropping out of the rotation shaft 301 to the outside of the rotation shaft 301 is formed on the outer surface of the rotation shaft 301, A rotation part 300 formed with
A rotation support part 400 installed to surround the outer surface of the rotation shaft 301 to support the rotation of the rotation shaft 301; And
A through hole (501) is formed in the center of the driven part to allow the rotation shaft (301) to pass therethrough. The oil dropped from the mixing prevention cap (30) around the through hole (501) An anti-tamper cap base (500) protruding from an annular mixing stopper (502) for blocking entry of the toner into the through hole (501);
Wherein the non-contact interference prevention seal is formed of a non-contact adhesive.

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