KR102534436B1 - Deviece for harden preventiing - Google Patents

Abstract

The present invention includes a batch tank in which liquid material is stored; and a rotation unit installed in the batch tank and circulating a liquid level of the liquid material, wherein the liquid material is a curable material that reacts to moisture or ambient temperature.

Description

Anti-hardening device {DEVIECE FOR HARDEN PREVENTIING}

The present invention relates to an anti-curing device capable of preventing curing of a liquid curable material.

Molding materials are raw materials for molded products produced by extrusion molding, injection molding, pressing, direct processing or compounding. There are several types of molding materials, but a liquid curable material may be used for injection molding, for example.

The liquid curable material may include a heat curable resin and a moisture curable resin, for example, molded urethane.

In the case of injection molding of the molded urethane, the raw material of the molded urethane and the curing agent are stirred and then injected into the injection mold by pouring. At this time, the pot life was limited to 1 to 10 minutes as the molded urethane cured simultaneously with stirring of the raw material and the curing agent.

Recently, a molded urethane with significantly improved pot life has been released, and an injection molding method using the molded urethane has been disclosed. (Refer to Registered Patent Publication No. 10-1388650)

However, in the prior art, when the molded urethane is stored for a long time, the liquid surface of the molded urethane hardens.

When an injection-molded product is manufactured with such molded urethane, there are problems in that defects occur in the injection-molded product, failure of injection molding equipment, and loss of raw materials.

Registered Patent Publication No. 10-1388650 (2014.04.17)

An object to be solved by the present invention is to provide an anti-curing device capable of preventing curing of a liquid curable material by circulating the surface of the liquid curable material with a rotating unit.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

An anti-curing device according to an embodiment of the present invention includes a batch tank in which a liquid material is stored; and a rotation unit installed in the batch tank and circulating the liquid surface of the liquid material, wherein the liquid material is a curable material that reacts to moisture or ambient temperature.

The rotating unit may further include a wing unit rotating in contact with the liquid surface, and a moving unit configured to adjust a height of the wing unit so that a rotating surface of the wing unit coincides with a height of the liquid level.

In addition, the moving unit is a buoyancy member coupled to the wings, and the buoyancy members generate buoyancy to move the wings up and down according to a change in the level of the liquid level.

In addition, the rotating unit may include a first shaft that is disposed in the batch tank and rotates; and a hub through which the first shaft passes and is connected to the wing, wherein a guide rail is formed on an outer circumferential surface of the first shaft along a vertical direction, and an inner circumferential surface of the hub is coupled to move up and down along the guide rail. A guide slit is formed, and the first shaft and the hub can rotate integrally by coupling the guide rail and the guide slit.

Also, when the wing unit is moved up and down by the moving unit, the guide slit of the hub may be moved up and down along the guide rail of the first shaft.

Further, the scraping part is arranged so that the end of the wing part is in contact with the contact area where the liquid surface and the inner surface of the batch tank come into contact, and the scraping part is coupled to the end of the wing part. can be scraped along.

In addition, the scraping part may include an elastic material.

In addition, the moving unit is an actuator, and the sensing unit detects the level of the liquid; and a control unit controlling the actuator so that a rotating surface of the wing unit coincides with the level of the liquid level according to the measurement value of the sensing unit.

In addition, the rotary unit may include wings, and when the height of the liquid level is a specific height, a part of the wing parts may be disposed below the liquid level, and the rest of the wing parts may be disposed above the liquid level.

In addition, the plurality of wings may be configured, and the plurality of wings may have different radii of rotation from the central axis of the batch tank.

Also, one of the plurality of wings having the largest radius of rotation may be disposed to come into contact with the inner surface of the placement tank.

In addition, a magnetic material disposed to be movable along an outer surface of the placement tank and inducing rotation and elevation of the wings may be further included.

Other specific details of the invention are included in the detailed description and drawings.

The curing prevention device according to an embodiment of the present invention has an effect of preventing curing of the curable material by circulating the liquid surface of the curable material.

Furthermore, since the curing prevention device according to an embodiment of the present invention can provide the curable material stored in the batch tank in an uncured state to the injection molding equipment, it is possible to prevent the failure of the injection molding equipment, thereby preventing manufacturing. It is also possible to prevent defects of injection molded products, and loss of raw materials.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a cross-sectional view showing an anti-curing device according to a first embodiment of the present invention.
2 is a cross-sectional view showing a rotating part of an anti-curing device according to a first embodiment of the present invention.
Figure 3 is a plan view showing a rotating part of the curing prevention device according to the first embodiment of the present invention.
4 is a cross-sectional view showing an anti-curing device according to a second embodiment of the present invention.
5 is a cross-sectional view showing a scraping part of an anti-curing device according to a second embodiment of the present invention.
6 is a cross-sectional view showing an anti-curing device according to a third embodiment of the present invention.
7 is a cross-sectional view showing an anti-curing device according to a fourth embodiment of the present invention.
8 to 9 are cross-sectional views showing an anti-curing device according to a fifth embodiment of the present invention.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only these embodiments are intended to complete the disclosure of the present invention, and are common in the art to which the present invention belongs. It is provided to fully inform the person skilled in the art of the scope of the invention, and the invention is only defined by the scope of the claims.

Terminology used herein is for describing the embodiments and is not intended to limit the present invention. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. As used herein, "comprises" and/or "comprising" does not exclude the presence or addition of one or more other elements other than the recited elements. Like reference numerals throughout the specification refer to like elements, and “and/or” includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first element mentioned below may also be the second element within the technical spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings commonly understood by those skilled in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless explicitly specifically defined.

The spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe a component's correlation with other components. Spatially relative terms should be understood as including different orientations of elements in use or operation in addition to the orientations shown in the drawings. For example, if you flip a component that is shown in a drawing, a component described as "below" or "beneath" another component will be placed "above" the other component. can Thus, the exemplary term “below” may include directions of both below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

The present invention relates to an anti-curing device that can be applied to a batch tank in which a liquid curable material is stored in conventional injection molding equipment for injection molding of a curable material.

Hereinafter, an anti-curing device according to a first embodiment of the present invention will be described.

1 is a cross-sectional view showing an anti-curing device according to a first embodiment of the present invention, Figure 2 is a cross-sectional view showing a rotating part of the anti-curing device according to a first embodiment of the present invention, Figure 3 is a first embodiment of the present invention It is a plan view showing the rotating part of the curing prevention device according to.

1 to 3, the curing prevention device according to the first embodiment of the present invention includes a placement tank 100, a rotating part 200a, and a moving part.

The batch tank 100 stores liquid material and may be formed in a cylindrical shape.

Here, the liquid material may be a curable material (i.e., liquid curable material), and the curable material may be a mixture of raw materials and a curing agent, and may include a moisture-curable material that is cured by moisture, a thermosetting material that is cured by external temperature, and the like. there is. For example, the curable material may be molded urethane and epoxy resin, but is not particularly limited.

The curable material stored in the batch tank 100 may be stirred. At this time, stirring may be performed by an impeller or the like disposed in the curable material.

The curable material stored in the batch tank 100 may be supplied to a metered injection unit (not shown) or an injection molding machine (not shown) of injection molding equipment (not shown). Here, the quantitative injection unit serves to inject the curable material supplied from the batch tank into the injection molding machine through the reciprocating motion of the piston, and the injection machine serves to pressurize the curable material supplied from the quantitative injection unit and inject it into the cavity of the mold. do.

As will be described later, as the liquid level of the curable material stored in the batch tank 100 is circulated by the rotation unit 200a, curing of the curable material stored in the batch tank 100 is prevented. Therefore, when the curable material stored in the batch tank 100 is supplied to a metered injection unit (not shown) or an injection machine (not shown), clogging due to curing of the curable material can be prevented.

The batch tank 100 may be supplied with nitrogen from the nitrogen filling tank 10 in order to reduce curing of the curable material due to a reaction of moisture or outdoor temperature. In this way, the nitrogen pressure filled in the batch tank 100 can also be used for pushing the curable material when the curable material is discharged.

The batch tank 100 may be insulated by the insulator 20 to prevent hardening of the curable material due to temperature change. For example, the warming device may be a warming tank that surrounds the outer surface of the batch tank 100 and circulates a warming fluid therein.

On the other hand, when the curable material is stored in the batch tank 100 for a long time, a phenomenon in which the liquid surface of the curable material is cured by moisture or outside temperature occurs. In order to prevent this, in the present invention, a rotation unit 200a is provided to circulate the liquid surface of the curable material (ie, liquid material).

The rotating part 200a is not used for stirring the curable material like a conventional stirrer, but serves to prevent hardening of the liquid surface of the curable material by circulating around the liquid surface of the curable material.

In this embodiment, the rotary part 200a includes a wing part 210, a first shaft 220 and a hub 230.

The wings 210 serve to circulate the liquid surface of the curable material by being rotated by the driving means, and can rotate in contact with the liquid surface of the curable material.

The driving means rotates the first shaft 220 fastened through the hub 230 coupled to the central axis of the wing 210, thereby driving the wing 210, the first shaft 220, and the hub 230. It can be rotated integrally. For example, the drive motor 700 may be used as the drive unit, and a drive shaft of the drive motor 700 may be connected to the first shaft 220 .

Meanwhile, as an example, the wings 210 may circulate the liquid level of the curable material as they are continuously rotated by the driving means. At this time, the speed at which the driving means rotates the wings 210 may be relatively low.

Also, as an example, the wing unit 210 may intermittently circulate the liquid level of the curable material as it is intermittently rotated by the driving means. At this time, the speed at which the driving means rotates the wings 210 may be relatively high.

In addition, as an example, the wing portion 210 may be formed in a plate shape or a shape in which one side and the other side of the plate shape are bent in opposite directions to each other.

Also, as an example, the wing unit 210 may be formed singly or in plurality. At this time, the plurality of wing parts 210 may be radially coupled to the hub 230, and the plurality of wing parts 210 may have mutually equal or different lengths.

In addition, as an example, the wings 210 may rotate in a state partially submerged in the water of the curable material, and at this time, the wings 210 circulate not only the liquid level of the curable material but also the water adjacent to the liquid surface of the curable material. can make it

At this time, the wings 210 may have a specific gravity that is only half submerged in the liquid level of the curable material. In this case, when the wing unit 210 rotates, an upward flow flowing upward from below the liquid level of the curable material and a downward flow flowing downward above the liquid level of the curable material occur, thereby improving the curing prevention effect of the curable material. .

The first shaft 220 serves to transmit power from the driving means to the hub 230 and the wing 210 .

The first shaft 220 is disposed in the placement tank 100 and is rotated by a driving means. Here, the first shaft 220 is preferably disposed along the central axis of the batch tank 100, but is not particularly limited, and the first shaft 220 is disposed inclined with respect to the central axis of the batch tank 100. It can be.

Referring to FIGS. 2 and 3 , the first shaft 220 penetrates the central axis of the hub 230 and the guide rail 221 is formed along the outer circumferential surface of the first shaft 220 . The guide slit 231 formed on the inner circumferential surface of the hub 230 is movably coupled to the guide rail 221 . Therefore, as the rotational force of the first shaft 220 is transmitted to the hub 230 by the combination of the guide rail 221 and the guide slit 231, the first shaft 220 and the hub 230 rotate integrally. can In addition, the guide slit 231 of the hub 230 may move up and down along the guide rail 221 of the first shaft 220 .

For example, the guide slit 231 may have a wider cross-sectional area than the guide rail 221 . Accordingly, the guide slit 231 of the hub 230 can be easily moved up and down along the guide rail 221 of the first shaft 220 .

For example, the guide rail 221 and the guide slit 231 may be formed in the form of a single spline, but are not particularly limited and may be formed in the form of a plurality of splines arranged along the circumferential direction.

As described above, the hub 230 can be moved up and down along the first shaft 220 by combining the guide rail 221 and the guide slit 231 and can be rotated integrally with the first shaft 220. there is. And the outer circumferential surface of the hub 230 is connected to the wing portion 210 . Accordingly, the wing unit 210, the first shaft 220, and the hub 230 may be integrally rotated.

Meanwhile, when the water level of the placement tank 100 changes, the rotational surface of the wings 210 may not coincide with the liquid level.

In order to prevent this, the moving unit serves to adjust the height of the wing unit 210 so that the rotating surface of the wing unit 210 coincides with the level of the liquid level.

In this embodiment, the moving unit may be a buoyancy member 310 coupled to the wing unit 210 . The buoyancy material 310 generates buoyancy to raise and lower the height of the wings 210 according to the change in the liquid level of the curable material, and the wings 210 are always on the liquid level of the curable material by the buoyancy material 310. can be placed. At this time, when the wing portion 210 is raised and lowered by the buoyancy material 310, the guide slit 231 of the hub 230 connected to the wing portion 210 guides the guide rail 221 of the first shaft 220. As the wing unit 210 ascends and descends, the elevation of the wing unit 210 may be guided according to the elevation of the guide slit 231 relative to the guide rail 221 .

For example, the buoyancy material 310 is installed in the middle between the top and bottom of the wing 210, so that a portion of the wing 210 is disposed below the liquid level of the curable material, and the rest of the wing 210 may be placed above the liquid level of the curable material. In this way, since the buoyancy material 310 is installed in the middle of the wing portion 210, the wing portion 210 may be disposed to be partially submerged in the liquid surface of the curable material.

In this case, when the wing unit 210 rotates, an upward flow flowing upward from below the liquid level of the curable material and a downward flow flowing downward above the liquid level of the curable material occur, thereby improving the curing prevention effect of the curable material. .

For example, the buoyancy material 310 may be one of an air-filled tube, an air-filled balloon, and a float, but is not particularly limited.'

Hereinafter, the operation of this embodiment will be described.

First, the batch tank 100 is filled with a curable material having a specific height.

Thereafter, the buoyancy material 310 generates buoyancy so that the rotational surface of the wing 210 always adjusts the height of the wing 210 so that it always coincides with the liquid level of the curable material.

Thereafter, the wing portion 210 disposed at the height of the liquid level of the curable material is rotated by the driving means, and as a result, the liquid level of the curable material is circulated, thereby preventing curing of the curable material.

Hereinafter, an anti-curing device according to a second embodiment of the present invention will be described.

* Figure 4 is a cross-sectional view showing an anti-curing device according to a second embodiment of the present invention, Figure 5 is a cross-sectional view showing a scraping portion of the anti-curing device according to a second embodiment of the present invention.

As shown in FIG. 4, the curing preventing device according to the second embodiment of the present invention is the same as the curing preventing device according to the first embodiment of the present invention, but the liquid surface of the curable material and the inner surface of the batch tank 100 are The distal end of the wing unit 210 is placed in contact with the contact area. Therefore, when the wing unit 210 rotates, the end of the wing unit 210 scrapes along the above-described contact area.

This is because when the curable material is stored in the batch tank 100 for a long time, the liquid surface of the curable material is cured by moisture or outside temperature, and the cured material among the curable materials sticks to the contact area described above. It is intended to scrape off the hardened material adhering to the contact area.

For example, as the radius of rotation of the wings 210 is formed by the distance from the outer circumferential surface of the hub 230 to the inner surface of the placement tank 100, the ends of the wings 210 may come into contact with the aforementioned contact area. there is.

As shown in FIG. 5 , a scraping unit 400 may be installed at an end of the wing unit 210 . The scraping part 400 contacts the above-mentioned contact area instead of the end of the wing part 210, so that when the wing part 210 rotates, the scraping part 400 removes the hardened material adhering to the above-mentioned contact area. can be scraped off

For example, the scraping part 400 may be formed in a curved shape corresponding to a predetermined portion of the inner surface of the batch tank 100 . In addition, the scraping unit 400 may include an elastic material. For example, the elastic material may be a material such as rubber, epoxy, or urethane.

Hereinafter, the operation of this embodiment will be described.

First, the batch tank 100 is filled with a curable material having a specific height.

Thereafter, the buoyancy material 310 generates buoyancy so that the rotational surface of the wing 210 always adjusts the height of the wing 210 so that it always coincides with the liquid level of the curable material.

Thereafter, the wing portion 210 disposed at the height of the liquid level of the curable material is rotated by the driving means, and as a result, the liquid level of the curable material is circulated, thereby preventing curing of the curable material.

At this time, as the scraping unit 400 rotates according to the rotation of the wing unit 210, it is possible to scrape off the hardened material adhering to the above-described contact area.

Hereinafter, an anti-curing device according to a third embodiment of the present invention will be described.

6 is a cross-sectional view showing an anti-curing device according to a third embodiment of the present invention.

As shown in FIG. 6, the curing prevention device according to the third embodiment of the present invention is the same as the curing prevention device according to the first or second embodiment of the present invention, but the outer surface of the batch tank 100 It may further include a magnetic body 600 disposed to be movable along and inducing rotation and elevation of the wing unit 210 .

In this embodiment, the wing portion 210 is made of a conductive material, and a permanent magnet may be used as the magnetic body 600 .

Accordingly, the rotation and elevation of the wings 210 may be induced by the magnetic force of the magnetic body 600 .

For example, the magnetic material 600 may be disposed at a specific height corresponding to the liquid level of the curable material on the outer surface of the placement tank 100 . At this time, the wings 210 are pulled toward the magnetic body 600 by the magnetic force of the magnetic body 600 and then stopped.

Thereafter, when the magnetic body 600 is moved in the circumferential direction based on a specific height corresponding to the liquid level of the curable material on the outer surface of the batch tank 100, the wing unit 210 is formed by the magnetic force of the magnetic body 600. It can be rotated in the circumferential direction. As a result, as the liquid level of the curable material is circulated by the rotation of the wings 210, curing of the curable material is prevented. In this embodiment, the movement of the magnetic body 600 can be done manually or automatically.

Hereinafter, an anti-curing device according to a fourth embodiment of the present invention will be described.

7 is a cross-sectional view showing an anti-curing device according to a fourth embodiment of the present invention.

As shown in FIG. 7, the anti-curing device according to the fourth embodiment of the present invention is the same as the anti-curing device according to the first embodiment of the present invention, but the moving part is composed of an actuator (not shown), and a sensing unit 500 and a controller (not shown) may be further included.

The actuator has a rod that rotatably supports the lower surface of the wing unit 210 through a bearing, and the wing unit 210 can be moved up and down by the rod elevation.

The sensing unit 500 senses the liquid level of the curable material and transmits it to the control unit. A water level sensor, a distance sensor, a laser sensor, an infrared sensor, or the like may be used as the sensing unit 500, but is not particularly limited.

The control unit controls the actuator 320 so that the rotating surface of the wing unit 210 coincides with the level of the liquid according to the measurement value of the sensing unit 500, and the actuator 320 controls the rotation surface of the wing unit 210 under the control of the control unit. The wings 210 are raised and lowered to match the level of the liquid.

Hereinafter, an anti-curing device according to a fifth embodiment of the present invention will be described.

8 to 9 are cross-sectional views showing an anti-curing device according to a fifth embodiment of the present invention.

As shown in FIGS. 8 to 9 , the anti-curing device according to the fifth embodiment of the present invention includes a batch tank 100 and a rotating part 200b.

Since the batch tank 100 is the same as the batch tank 100 of the curing prevention device according to the first embodiment of the present invention, a detailed description thereof will be omitted.

In this embodiment, the rotating part 200b serves to prevent hardening of the liquid surface of the curable material by forming a vortex on the liquid surface of the curable material.

The rotating part 200b may include a wing part 240 , a second shaft 250 and a support part 260 .

The wings 240 are rotated by the driving means to form vortexes on the liquid surface of the curable material. Here, the driving means rotates the second shaft 250 connected via the wing 240 and the support 260, thereby integrally uniting the wing 240, the second shaft 250, and the support 260. can be rotated For example, the drive motor 700 may be used as the drive unit, and a drive shaft of the drive motor 700 may be axially connected to the second shaft 250 .

When the height of the liquid level of the curable material is a specific height, a part of the wing part 240 is disposed below the liquid level of the curable material, and the rest of the wing part 240 is above the liquid level of the curable material. are placed Therefore, when the wings 240 rotate, vortexes are formed on the liquid surface of the curable material along the rotational path of the wings 240 .

Furthermore, a plurality of wings 240 are formed, and the plurality of wings 240 are arranged to have different radii of rotation from the central axis of the placement tank 100 . As a result, the plurality of wings 240 are rotated at different radii of rotation from the central axis of the placement tank 100 . Accordingly, when the plurality of wings 240 rotate, a plurality of vortices having different radii of rotation may be formed on the liquid surface of the curable material along different rotation paths of the plurality of wings 240 .

For example, the plurality of wings 240 include a first wing 241 having a first radius of rotation from the central axis of the batch tank 100 and a second radius of rotation from the central axis of the batch tank 100. It may include a second wing portion 242, and the first rotation radius may be greater than the second rotation radius. Therefore, when the first wing 241 and the second wing 242 rotate, the liquid surface of the curable material has a first rotation radius along the rotation path of the first wing 241 and the second wing 242, respectively. A vortex having and a vortex having a second radius of rotation may be formed.

For example, one having the largest radius of rotation among the plurality of wings 240 may be disposed to come into contact with the inner surface of the placement tank 100 . Therefore, when the wing parts 240 rotate, the one having the largest rotation radius among the wing parts 240 can scrape along the inner surface of the placement tank 100 .

On the other hand, the above-described scraping unit 400 may be installed at the end of the one having the largest rotation radius among the plurality of wing units 240 .

The second shaft 250 serves to transmit rotational force by the driving means to the support part 260 and the wing part 240 .

The second shaft 250 is disposed in the placement tank 100 and is rotated by a driving means. Here, the second shaft 250 is preferably disposed on the central axis of the batch tank 100, but is not particularly limited, and the second shaft 250 may be disposed inclined with respect to the central axis of the batch tank 100. can

The support part 260 serves to connect the second shaft 250 and the wing part 240 . Therefore, by adjusting the length of the support portion 260, it is possible to adjust the rotation radius of the wing portion 240 has.

The support part 260 connects the first support part 261 connecting the upper part of the second shaft 250 and the upper part of the wing part 240, and the lower part of the second shaft 250 and the lower part of the wing part 240. It may include a second support portion 262 to.

For example, referring to FIG. 8 , when the liquid level of the curable material is located between the first support part 261 and the second support part 262, the curable material is agitated by the rotation of the second support part 262. may be

Also, referring to FIG. 9 , when the liquid level of the curable material is located above the first support part 261 and the second support part 262, the rotation of the first support part 261 and the rotation of the second support part 262 Rotation may also agitate the two parts of the curable material.

Hereinafter, the operation of this embodiment will be described.

First, the batch tank 100 is filled with a curable material having a specific height.

Next, the plurality of wings 240 having different radii of rotation from the central axis of the placement tank 100 are rotated by the driving means.

As a result, a plurality of vortices having different radii of rotation are formed on the liquid surface of the curable material along different rotational paths of the plurality of wing parts 240, and thereby curing of the curable material is prevented.

Therefore, the curing prevention device according to an embodiment of the present invention has an effect of preventing curing of the liquid curable material by circulating the liquid surface of the liquid curable material.

Furthermore, since the curing prevention device according to an embodiment of the present invention can provide the curable material stored in the batch tank in an uncured state to the injection molding equipment, it is possible to prevent the failure of the injection molding equipment, thereby preventing manufacturing. It is also possible to prevent defects of injection molded products, and loss of raw materials.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

100: batch tank
200a: rotating part
210: wing part
220: first shaft
221: guide rail
230: hub
231: guide slit
200b: rotating part
240: wing part
241: first wing
242: second wing
250: second shaft
260: support
261: first support
262: second support
310: buoyant material
400: scraping unit
500: sensing unit
600: magnetic body
700: drive motor

Claims (11)

a batch tank in which liquid materials are stored;
a rotation unit installed in the batch tank, circulating the liquid level of the liquid material, and having wing units rotating in contact with the liquid level;
a moving part that is a buoyancy material coupled to the wing part and adjusts the height of the wing part so that the rotating surface of the wing part coincides with the level of the liquid level; and
Including a scraping portion coupled to the end of the wing portion,
The buoyancy material is installed in the middle of the wing portion,
A portion of the wing portion is disposed below the liquid surface and the rest of the wing portion is disposed above the liquid surface;
The distal end of the wing part is disposed to be in contact with a contact area where the liquid surface and the inner surface of the batch tank come into contact with each other,
Curing prevention device, characterized in that the scraping portion scrapes along the contact area when the wing portion rotates.
According to claim 1,
The wing portion is made of a conductive material,
A magnetic material disposed to be movable along the outer surface of the placement tank and inducing rotation and elevation of the wings,
The liquid material is an anti-curing device, characterized in that the curable material reacts to moisture or outdoor temperature.
According to claim 2,
a nitrogen filling tank supplying nitrogen to the batch tank; and
Further comprising a warming tank surrounding the outer surface of the batch tank and circulating a warming fluid,
According to claim 1,
the rotating part,
a first shaft that is disposed in the batch tank and rotates; and
A hub through which the first shaft passes and connected to the wings,
Guide rails are formed on the outer circumferential surface of the first shaft along the vertical direction,
A guide slit coupled to be liftable along the guide rail is formed on an inner circumferential surface of the hub,
The first shaft and the hub are curing prevention device, characterized in that integrally rotated by the coupling of the guide rail and the guide slit.
According to claim 4,
When the wing part is raised and lowered by the moving part,
The curing prevention device, characterized in that the guide slit of the hub is elevated along the guide rail of the first shaft.
According to claim 4,
The guide slit is an anti-curing device, characterized in that it has a wider cross-sectional area than the guide rail.
According to claim 1,
The scraping prevention device, characterized in that comprising an elastic material.
According to claim 1,
The moving part is an actuator,
a sensing unit for sensing the level of the liquid; and
The curing prevention device further comprises a control unit for controlling the actuator so that a rotating surface of the wing unit coincides with the liquid level according to the measurement value of the sensing unit.
According to claim 1,
The rotating part includes a wing part,
When the height of the liquid level is a specific height, a part of the wing part is disposed below the liquid level, and the rest of the wing part is disposed above the liquid level.
According to claim 9,
The wing portion is composed of a plurality,
The curing prevention device, characterized in that the plurality of wings have different radii of rotation from the central axis of the batch tank.
According to claim 10,
The curing prevention device, characterized in that the one having the largest rotation radius among the plurality of wings is disposed to come into contact with the inner surface of the batch tank.

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