KR102439213B1 - Vertical Type-Collection Device For Persistent Organic Pollutants - Google Patents

Abstract

The vertical recalcitrant organic pollutant absorbing device according to an embodiment of the present disclosure includes a body part ( 100); a collecting unit 200 coupled to the main body 100 and absorbing organic pollutants for measuring the free dissolved phase concentration of the fluid stored in the main body 100; and a rotating power unit 300 coupled to the main body 100 and rotating the fluid stored in the main body 100 to form a turbulent flow so that the organic contaminants are rapidly absorbed by the collecting unit 200 . ; It may be configured as comprising a.

Description

Vertical Type-Collection Device For Persistent Organic Pollutants

The disclosure disclosed herein relates to a vertical recalcitrant organic pollutant collecting device, and in particular, by forming a turbulent flow around the collector to more rapidly absorb the free dissolved phase form of hydrophobic organic pollutants in a fluid such as seawater, pollutants It relates to a device for fast and accurate detection and measurement.

Unless otherwise indicated herein, the material described in this section is not prior art to the claims of this application, and inclusion in this section is not an admission that it is prior art.

Hydrophobic organic pollutants are chemically very stable structures and have strong resistance to chemical and biological degradation.

In addition, due to its hydrophobicity, it remains in the environment for a long time, accumulates in high concentrations in living things, and can affect even humans through biomagnification through the food chain.

These contaminants are adsorbed on particles (0.45um or more), colloids, or dissolved organic carbon in the marine environment, or exist as a freely dissolved phase freely dissolved in water. , the form that marine organisms can actually use is the free-dissolved phase in seawater or pore water, which is closely related to biotoxicity.

Therefore, it is very important to understand the free dissolved phase concentration in order to more accurately evaluate the biological effects and risks of hydrophobic organic pollutants present in seawater.

In general, the concentration of recalcitrant organic pollutants in seawater is very low, pg/L ~ ng/L, and in particular, the concentration of the dissolved phase in seawater is very low after collecting a huge amount of sample, followed by filtration, liquid-liquid extraction, or stationary phase extraction. (solid phase extraction), the obtained extract was analyzed and measured.

However, the method described above requires a long time due to a complicated pre-processing process, and even if analyzed, it is often measured as a value below the detection limit.

Since the 1990s, the need for a free dissolved phase concentration measurement method has been raised to reduce the above complicated procedure and to more accurately identify biological effects, and for this purpose, a passive sampler device has been developed.

A passive collector is a biomimetic device that uses the property of organic substances similar to the fat of living things to absorb organic pollutants according to the principle of distributional equilibrium. It absorbs only dissolved organic pollutants.

Therefore, the measurement of the free dissolved phase concentration from the recovered passive collector does not require a purification process unlike the existing analysis method, so chemical analysis is easy, and it is possible to detect even a very low concentration of pg/L level with a low detection limit.

Above all, the free dissolved phase concentration obtained by using a passive collector provides more accurate information on bioconcentration and toxicity results than the total concentration of all existing forms (particle form + dissolved form) used in existing seawater analysis methods. provides

In order to measure the concentration of the free dissolved phase in the marine environment, a passive collector should be installed in the field until the free dissolved phase contaminants reach equilibrium between the passive collector and the medium.

The equilibrium of naphthalene (water-octanol partition coefficient, logKow=3.4) with low hydrophobicity in seawater for polycyclic aromatic hydrocarbons when low density polyethylene, which is most widely used as a passive collector, is exposed to seawater The arrival time is 0.1 days, respectively, but in the case of highly hydrophobic benzo(a)pyrene (logKow=6.3), it is predicted to be 174 days.

However, the conventional passive collector as described above is one of the methods that can easily and more accurately predict the concentration of free dissolved phase in seawater. Due to biofouling on the surface of the apparatus, the absorption rate of contaminants is reduced, the loss of the passive collector, or the absorbed analytes are decomposed.

Therefore, there is no problem of bioadhesion, and it is necessary to develop a device capable of absorbing hydrophobic organic pollutants in a free-dissolved phase within a short time.

KR 1020160121739 A KR 1020120041096 A KR 1020100007622 A

The vertical non-degradable organic pollutant collecting device according to an embodiment of the present disclosure is created to improve the conventional problems as described above,

By combining a passive collector in which the performance correction material has been absorbed into a container filled with large-capacity seawater and a device that rotates the fluid in the container, turbulence is formed around the passive collector to see the free-dissolved phase of hydrophobic organic pollutants in seawater. The purpose is to provide a vertical-type recalcitrant organic pollutant collecting device that can absorb quickly, quickly reach an equilibrium state, and at the same time derive a more accurate free dissolved-phase concentration value using an action correction material.

A vertical recalcitrant organic pollutant collecting device according to an embodiment of the present disclosure for solving the above problems,

a body unit 100 for storing the fluid to reach equilibrium time so as to measure the free dissolved phase concentration of the fluid containing organic contaminants; a collecting unit 200 coupled to the main body 100 and absorbing organic pollutants for measuring the free dissolved phase concentration of the fluid stored in the main body 100; and a rotating power unit 300 coupled to the main body 100 and rotating the fluid stored in the main body 100 to form a turbulent flow so that the organic contaminants are rapidly absorbed by the collecting unit 200 . ; It may be configured as comprising a.

In addition, the body part 100,

A storage container 101 provided in an open cylindrical shape and receiving and storing the fluid therein, and an inlet connection module 102 provided on the lower side of the storage container 101 to allow the fluid to be introduced into the inside. ), and a discharge port connection module 103 provided on the upper side of the storage container 101 to discharge when the fluid flows in above a certain water level, and to be opposite to each other on the side of the storage container 101 It is provided as a pair and includes a rotating power unit coupling module 104 coupled to the rotating power unit 300 and a cover 105 coupled to the upper side of the storage container 101, wherein the storage container 101 includes At least one coupling groove coupled to the collecting unit 200 is provided, and the rotating power unit coupling module 104 includes at least one coupling port, and the rotating power unit 300 is fitted to the coupling port. It can be configured to be characterized in that.

In addition, the cover 105 may be configured to be formed of a transparent material so that the inside of the storage container 101 can be checked.

In addition, the collecting unit 200,

A plurality of supports 201 positioned in the longitudinal direction within the body portion 100, an upper coupling frame 202 for fixing the upper portions of the plurality of supports 201 by coupling them together, and the plurality of supports 201 A lower coupling frame 203 for fixing the lower parts together, at least one collector 204 for absorbing organic contaminants inside the main body 100, and the collector 204 to the support 201 ), but including a coupling module 205 coupled to, the upper coupling frame 202 may be configured, characterized in that at least one coupling protrusion coupled to the body portion 100 is formed.

In addition, the coupling module 205 is formed in the form of a tube tube and is provided with a fitting groove along the longitudinal direction on the side surface to be coupled to the support 201 through the fitting groove, and the collector 204 is the coupling module It may be configured to be positioned to surround the outer circumferential surface of the support body 201 between the 205 and the support body 201 to be fixed in close contact with the coupling module 205 .

In addition, the coupling module 205 may be configured, characterized in that it is formed of a rubber material.

In addition, the rotational power unit 300,

A support frame 301 coupled to the main body 100 and positioned above the main body 100, a motor 302 coupled to the support frame 301 to provide rotational power, and the motor ( It may be configured to include a propeller 303 coupled to the 302 and rotated by the power of the motor 302 .

In addition, the propeller 303 includes a rod unit detachably coupled to the motor 302, and at least one fan unit coupled to the rod unit, wherein the rotating power unit 300 includes the body part ( When coupled to 100), the fan unit may be configured to be positioned inside the body part 100 .

In addition, the controller 400 is connected to the rotary power unit 300 to control the rotary power unit 300; It may further include, and may be configured, characterized in that the power, operating time, and rotation speed of the motor 302 are controlled by the controller 400 .

Accordingly, the vertical non-degradable organic pollutant collecting device according to the embodiment of the present disclosure can shorten the on-site exposure time of the passive collector, and through this, it is possible to reduce the free-dissolved hydrophobic organic pollutant at an ultra-low concentration level, which is difficult to analyze. It can be absorbed in a short time. Therefore, by increasing the absorption rate of hydrophobic organic pollutants and shortening the time to reach equilibrium, the passive collector is not exposed to the site for a long time, and the absorption rate of pollutants due to biofouling on the surface of the passive collector is reduced or passive collection It has the advantage that there is no problem of loss of group or decomposition of absorbed analytes.

In addition, the motor is exposed to the upper part of the storage container to prevent overheating of the motor, and the rotation efficiency is improved by rotating it through a propeller directly connected to the motor. has the advantage of being easily monitored.

1 is a view showing a vertical non-degradable organic pollutant collecting device according to an embodiment of the present disclosure;
Figure 2 is a view for specifically explaining the main body according to the present disclosure;
3 is a view for explaining in detail the collecting unit according to the present disclosure;
4 is a view for explaining in detail the coupling module of the collecting unit by enlarging part a shown in FIG. 3;
5 is a view for specifically explaining the rotational power unit according to the present disclosure;
6 is a view for explaining in detail the propeller of the rotating power unit according to the present disclosure.

Hereinafter, the technical spirit of the present invention will be described with reference to the drawings, which is for easier understanding, and the scope of the present invention is not limited thereto, and the present invention is only defined by the scope of the claims.

In describing the embodiment of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted, and the same reference numerals refer to the same components throughout the specification. refers to the element.

1 is a view showing a vertical recalcitrant organic pollutant collecting device according to an embodiment of the present disclosure, FIG. 2 is a view for explaining the main body according to the present disclosure in detail, FIG. 3 is a collecting unit according to the present disclosure in detail Figure 4 is a view for explaining in detail the coupling module of the collecting unit by enlarging part a shown in Fig. 3, Fig. 5 is a view for explaining in detail the rotating power unit according to the present disclosure, Fig. 6 is It is a view for explaining in detail the propeller of the rotating power unit according to the present disclosure.

<Vertical non-degradable organic pollutant collecting device according to an embodiment of the present disclosure>

1 to 6 , the vertical recalcitrant organic pollutant collecting apparatus according to an embodiment of the present disclosure is to be configured to include a main body 100 , a collecting unit 200 and a rotating power unit 300 . can

The body part 100 is for storing the fluid to reach equilibrium time so as to measure the free dissolved phase concentration of the fluid containing organic contaminants, and as shown in FIG. 2 , a storage container ( 101), the inlet connection module 102, the outlet connection module 103, the rotational power unit coupling module 104 and may be configured to include a cover (105).

The storage container 101 is provided in a cylindrical shape with an open top, and receives the fluid and stores it therein. The storage container 101 receives seawater through a seawater pump and the like, and may be made of a stainless steel metal material that does not affect pressure, temperature, corrosion, and adsorption of hydrophobic organic pollutants.

In addition, the storage container 101 may be provided with at least one coupling groove coupled to the coupling protrusion of the collecting unit 200 to be described later at a predetermined position.

On the other hand, the storage container 101 is not limited to the above, and may be a material such as Teflon depending on the material to be analyzed, and may have various shapes other than a cylindrical shape.

The inlet connection module 102 may be provided on the lower side of the storage container 101 and allows the fluid to be introduced therein.

This inlet connection module 102 may be configured in the form of a tube made of Teflon material to facilitate connection with a hose connected to a seawater pump, etc., and a screw portion corresponding to the inner periphery or outer periphery of the hose is provided on the outer circumferential surface for connection. It may be configured to be coupled through fastening.

On the other hand, the inlet connection module 102 may be provided as one as shown in FIG. 2, but is not limited thereto and may be provided in plurality.

In addition, a valve capable of opening or closing the inlet connection module 102 may be provided at an end side of the inlet connection module 102 , and may be configured to adjust the flow rate of the fluid introduced therethrough.

The outlet connection module 103 may be provided on the upper side of the storage container 101, and allows the fluid to be discharged when the fluid flows in above a certain water level.

The outlet connection module 103 may be configured to be discharged to the outside of the storage container 101 when the fluid is greater than a preset amount as an overflow system.

This outlet connection module 103 may be configured in the form of a tube made of Teflon material to facilitate connection with a hose connected to a suction pump, etc., and a threaded portion corresponding to the inner periphery or outer periphery of the hose is provided on the outer circumferential surface for connection. It may be configured to be coupled through screw fastening.

On the other hand, the discharge port connection module 103 may be provided in plurality, spaced apart in the horizontal direction as shown in FIG. to be.

In addition, a valve capable of opening or closing the outlet connecting module 103 may be provided at the end side of the outlet connecting module 103, and through this, it is possible to selectively discharge as well as in the longitudinal direction. When a plurality of outlet connection modules 103 are provided, they may be sequentially opened and closed from the upper side to the lower side or from the lower side to the upper side to adjust the level of the fluid.

The rotational power unit coupling module 104 may be provided in a pair to face each other on the side surface of the storage container 101 and configured to be coupled with the rotational power unit 300 .

The rotary power unit coupling module 104 may include at least one coupling hole as shown in FIG. 2 , and the rotary power unit 300 may be fitted to the coupling member.

On the other hand, the rotary power unit coupling module 104 may be further provided with a handle, thereby having the advantage of being able to easily move the storage container 101 when moving it to a place to measure it or moving it for the purpose of storage. can

Such a handle may be rotatably provided in the vertical direction to reduce the protruding portion to the side and may be configured to be gripped and used only when in use.

The cover 105 is coupled to the storage container 101 , and may be provided in a circular cross-sectional shape having a diameter coupled to the storage container 101 , and is configured to be coupled to the upper side of the storage container 101 . can be

To this end, the storage container 101 and the cover 105 may be provided with coupling means at corresponding positions, for example, on the upper side side of the storage container 101 as shown in FIG. 2 . At least one coupling means may be provided along the circumferential direction, and coupling means may be provided at a position corresponding to the cover 105 .

One of the coupling means of the storage container 101 and the cover 105 has a protrusion protruding outward, and the other has a groove portion caught in the protrusion portion, and the groove portion is pulled in the opposite direction by the ratchet to the protrusion portion. It may be provided in a type such as an automatic bar of a vehicle to be firmly fixed to the vehicle, but may be configured in various ways such as bolting coupling through bolts and nuts, of course.

The cover 105 is configured such that a through hole passing through the cover 105 is formed at a predetermined position, and the motor 302 and the propeller 303 of the rotary power unit 300 to be described later are coupled through the through hole. can be

On the other hand, the cover 105 is preferably formed of a transparent plastic material so that the inside of the storage container 101 can be checked when combined with the storage container 101, but is not necessarily limited thereto.

Referring to FIG. 3 , the collecting unit 200 is coupled to the main body 100 to absorb organic contaminants for measuring the free dissolved phase concentration of the fluid stored in the main body 100 , the support body (201), the upper coupling frame 202, the lower coupling frame 203, the collector 204 and may be configured to include a coupling module (205).

The supporter 201 may be provided in plurality to be positioned in the longitudinal direction inside the body portion 100 . Specifically, the support 201 may be formed in a rod shape and spaced apart from each other in an upright state in the longitudinal direction inside the storage container 101 .

Although it is shown in FIG. 3 that the number of the supports 201 is four, this is only an example and is not limited thereto.

The upper coupling frame 202 may be configured to be fixed as one by coupling the upper portions of the plurality of supports 201 described above. Although the upper coupling frame 202 is shown in the form of a square frame in FIG. 3 , the upper coupling frame 202 is a rotating power unit 300 to be described later when the collecting unit 200 is coupled to the storage container 101 . The shape is not a problem as long as the through hole is provided so that the propeller 303 of the storage container 101 can be positioned inside the container 101 .

The upper coupling frame 202 may have at least one coupling protrusion coupled to the main body 100 , and specifically, the coupling protrusion is coupled to the coupling groove of the storage container 101 described above.

The lower coupling frame 203 is for fixing the lower portions of the plurality of supports 201 described above into one, specifically, as shown in FIG. 3 , a plate to which all lower ends of the supports 201 are coupled. It may be configured in the form of an upper body.

Meanwhile, the support 201, the upper coupling frame 202, and the lower coupling frame 203 may be integrally formed as one.

The collector 204 may be coupled to the support 201 and configured to absorb organic contaminants inside the main body 100 . Specifically, the collector 204 is a measuring sampler for absorbing and collecting hydrophobic organic pollutants, and is preferably provided as a polyethylene-based material, but is not limited thereto.

Of course, this collector 204 may be immersed in a high concentration of the performance correcting material solvent and stirred to absorb a sufficient amount of the performance correcting material, and then used in combination with the support 201 .

On the other hand, as a vortex is formed by agitating the fluid while the propeller 303 located inside the storage container 101 is rotated by a motor 302 to be described later, the collector 204 removes the hydrophobic organic pollutants faster. can absorb. This compensates for the disadvantage of the conventional manual collector, which takes a lot of time depending on the method of measuring after immersing the sampler in water for about a month and then measuring it.

The collector 204 may be configured to be coupled to the support 201 by the coupling module 205 .

4 is a view for explaining the coupling module 205 in detail by enlarging part a shown in FIG. 3 . Referring to FIG. 4 , the coupling module 205 may be formed in the form of a tube tube, A fitting groove may be provided on the side in the longitudinal direction.

It is coupled to the support 201 through the fitting groove, wherein the collector 204 is positioned between the coupling module 205 and the support 201 to surround the outer circumferential surface of the support 201 and the coupling It may be configured to be fixed in close contact with the module 205 .

It is preferable that the coupling module 205 is formed of a rubber material and configured to change the size of the fitting groove, but is not necessarily limited thereto.

The rotating power unit 300 is coupled to the body unit 100 to rotate the fluid stored in the body unit 100 to form a turbulent flow, so that organic pollutants are rapidly absorbed by the collecting unit 200 .

As shown in FIG. 5 , the rotational power unit 300 may include a support frame 301 , a motor 302 , and a propeller 303 .

The support frame 301 may be coupled to the main body 100 and configured to be positioned above the main body 100 .

The motor 302 may be coupled to the support frame 301 to provide rotational power.

Specifically, referring to FIGS. 1, 5 and 6 , the motor 302 is coupled to the upper portion of the support frame 301 , and the support frame 301 is coupled to the rotational power unit of the main body 100 . When coupled to the module 104 , the rotation axis of the motor 302 may be configured to be positioned parallel to the longitudinal direction of the storage container 101 .

On the other hand, when the motor 302 is coupled to the support frame 301, the motor 302 is configured to be exposed to the outside, thereby preventing overheating and electric shock of the motor due to long-time operation of the motor 302, and There is an advantage that the efficiency of the motor can be increased.

The propeller 303 may be directly coupled to the motor 302 and configured to be rotated by the power of the motor 302 . The propeller 303 may include a bar unit detachably coupled to the motor 302 as shown in FIGS. 5 and 6, and at least one fan unit coupled to the bar unit.

Accordingly, the propeller 303 is separated from the motor 302 and first placed in the storage container 101 of the main body 100, and then combined with the motor 303 to The fan unit may be positioned inside the storage container 101 of the main body 100 .

On the other hand, the vertical recalcitrant organic pollutant collecting apparatus according to an embodiment of the present disclosure may further include a controller 400 connected to the rotary power unit 300 to control the rotary power unit 300 .

Specifically, the controller 400 may be configured to control the on/off of the power of the motor 302, control the operating time to operate for a predetermined time, and control the motor 302 to change the rotation speed. will be.

In addition, the controller 400 may include an abnormality detection module (not shown) for detecting the presence or absence of an abnormality in the motor 302 , wherein the abnormality detection module includes a relay unit, an overcurrent detection unit, a determination unit, and a motor drive cutoff. It may include a unit.

In the relay unit, the driving power of the motor 302 is applied to an input terminal of one side, a motor control signal is inputted to an input terminal of the other side, and the output terminal of one side is connected to one side of the motor 302 and the output terminal of the other side is grounded. can be configured.

The overcurrent detecting unit may be connected to the other side of the motor 302 to detect whether an overcurrent flows in the motor 302 .

The determination unit may be configured to determine an abnormality when the overcurrent of the motor 302 is detected by the overcurrent detection unit.

The epithelial motor drive blocking unit may be configured to stop the driving of the motor 302 when the determination unit determines that the motor 302 is abnormal.

Accordingly, even when the motor 302 is driven for a long time, the abnormality of the motor 302 can be effectively detected, and when the abnormality is detected, the motor 302 can be quickly stopped to protect it.

The vertical recalcitrant organic pollutant collecting apparatus of the present disclosure according to the above-mentioned may be installed on a ship or a coastal pier, and may collect seawater while moving a large area when using a ship.

On the other hand, hydrophobic organic pollutants not mentioned may include pesticides, HDA, polycyclic aromatic hydrocarbon compounds having two or more benzene rings, and the like.

The vertical recalcitrant organic pollutant collecting device as described above can reduce the on-site exposure time of the passive collector by speeding up the absorption rate of hydrophobic organic pollutants, and through this, free-dissolving in ultra-low concentration seawater that is difficult to analyze Because the phase concentration can be easily identified, the passive collector is not exposed to the field for a long time, so the absorption rate of pollutants due to biofouling on the surface of the passive collector is reduced, or the loss or absorbed analyte of the passive collector is decomposed. It has the advantage that the problem does not occur.

In addition, the motor is exposed to the upper part of the storage container to prevent overheating of the motor, and the rotation efficiency is improved by rotating it through a propeller directly connected to the motor. has the advantage of being easily monitored.

Although described above with reference to the drawings according to the embodiment of the present disclosure, it is possible for those of ordinary skill in the art to make various applications, modifications and adaptations within the scope of the present invention based on the above contents. will be.

1000: Vertical recalcitrant organic pollutant collecting device according to the present disclosure
100: main body 101: storage container
102: inlet connection module 103: outlet connection module
104: rotation power unit coupling module 105: cover
200: collection unit 201: support
202: upper coupling frame 203: lower coupling frame
204: collector 205: combination module
300: rotational power unit 301: support frame
302: motor 303: propeller
400 : controller

Claims (9)

a body unit 100 for storing the fluid to reach equilibrium time so as to measure the free dissolved phase concentration of the fluid containing organic contaminants; a collecting unit 200 coupled to the main body 100 and absorbing organic pollutants for measuring the free dissolved phase concentration of the fluid stored in the main body 100; and a rotating power unit 300 coupled to the main body 100 and rotating the fluid stored in the main body 100 to form a turbulent flow so that the organic contaminants are rapidly absorbed by the collecting unit 200 . ; including,
The collecting unit 200,
A plurality of supports 201 positioned in the longitudinal direction inside the main body 100, an upper coupling frame 202 for coupling the upper portions of the plurality of supports 201 and fixing them into one, and the plurality of supports 201 A lower coupling frame 203 for fixing the lower parts together, at least one collector 204 for absorbing organic contaminants inside the main body 100, and the collector 204 to the support 201 ) including a coupling module 205 for coupling to,
The upper coupling frame 202 has at least one coupling protrusion coupled to the main body 100, characterized in that at least one vertical-type recalcitrant organic pollutant collecting device is formed.
According to claim 1,
The body part 100,
A storage container 101 provided in an open cylindrical shape and receiving and storing the fluid therein, and an inlet connection module 102 provided on the lower side of the storage container 101 to allow the fluid to be introduced into the inside. ), and a discharge port connection module 103 provided on the upper side of the storage container 101 to discharge when the fluid flows in above a certain water level, and to be opposite to each other on the side of the storage container 101 It is provided as a pair and includes a rotating power unit coupling module 104 coupled to the rotating power unit 300 and a cover 105 coupled to the upper side of the storage container 101,
The storage container 101 is provided with at least one coupling groove coupled to the collecting unit 200,
The rotary power unit coupling module 104 includes at least one coupling hole, and the rotary power unit 300 is fitted to the coupling hole.
3. The method of claim 2,
The cover (105) is a vertical-type recalcitrant organic pollutant collecting device, characterized in that it is formed of a transparent material so that the inside of the storage container (101) can be checked.
delete According to claim 1,
The coupling module 205 is formed in the form of a tube tube, and a fitting groove is provided on the side thereof in the longitudinal direction, and is coupled to the support body 201 through the fitting groove,
The collector 204 is positioned to surround the outer circumferential surface of the support 201 between the coupling module 205 and the support 201 and is fixed in close contact with the coupling module 205. A device for collecting non-degradable organic pollutants.
6. The method of claim 5,
The coupling module 205 is a vertical recalcitrant organic pollutant collecting device, characterized in that it is formed of a rubber material.
According to claim 1,
The rotational power unit 300,
A support frame 301 coupled to the main body 100 and positioned above the main body 100, a motor 302 coupled to the support frame 301 to provide rotational power, and the motor ( 302) and is coupled to the vertical type, characterized in that it comprises a propeller (303) rotated by the power of the motor (302).
8. The method of claim 7,
The propeller 303 includes a rod unit detachably coupled to the motor 302 and at least one fan unit coupled to the rod unit,
When the rotating power unit 300 is coupled to the body unit 100, the fan unit is positioned inside the body unit 100.
9. The method of claim 8,
a controller 400 connected to the rotating power unit 300 to control the rotating power unit 300; It further comprises, and the power, operating time, and rotation speed of the motor (302) are controlled by the controller (400).

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