KR101907200B1 - Apparatus for cleaning cylinder - Google Patents

Abstract

According to an embodiment of the present invention, a cylinder cleaning apparatus is provided. The apparatus comprises: a cylinder for providing a space for molding therein; A distributor for supplying and recovering a fluid introduced from the outside to the cylinder; And a connection pipe communicating the cylinder and the distributor, wherein the fluid may include at least one of cooling water, compressed air, and a descaling liquid.

Description

[0001] APPARATUS FOR CLEANING CYLINDER [0002]

The present invention relates to a cylinder cleaner, and more particularly, to a cylinder cleaner that facilitates coupling between piping and improves fluid functionality by generating a spiral flow.

2. Description of the Related Art In general, an injection mold apparatus forms an injection molding by injecting molten resin or the like into a mold cavity. Further, in order to further promote the injection molding process, cooling water is supplied through the cooling channel formed in the mold to further improve the cooling effect, thereby improving the molding efficiency of the injection molding.

However, according to the cooling process using the cooling water, residual cooling water remains in the flow path to form contaminants, and thereafter, the cooling effect in the injection process is reduced.

In order to remove contaminants, a scale removing solution is injected into a cooling channel. However, since various fluids have to be introduced into the mold, piping for fluid flow is complicated and difficult to manufacture and maintain. Also, as in the case of the cooling water, there is a problem that the remnant scale remover and contaminants remain and the molding quality and efficiency are lowered.

Therefore, there is a need for a cylinder cleaning device to solve such a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cylinder cleaning apparatus which facilitates coupling between piping and improves fluid functionality by generating a spiral flow.

The technical problems of the present invention are not limited to the above-mentioned technical problems, and other technical problems which are not mentioned can be understood by those skilled in the art from the following description.

A cylinder cleaning apparatus is provided according to an embodiment of the present invention. The apparatus comprises: a cylinder for providing a space for molding therein; A distributor for supplying and recovering a fluid introduced from the outside to the cylinder; And a connection pipe communicating the cylinder and the distributor, wherein the fluid may include at least one of cooling water, compressed air, and a descaling liquid.

Advantageously, the distributor comprises at least one first inlet through which the fluid flows from the outside; At least one first outlet for discharging the fluid to the outside; A second outlet for discharging the fluid to the connection pipe; A second inlet through which the fluid flows from the connecting pipe; A first connection conduit connecting the at least one first inlet and the second outlet; And a second connection conduit connecting the at least one first outlet and the second inlet.

Further, preferably, the connecting piping can connect the second outlet and the second inlet of the distributor to the inlet and the outlet of the cylinder, respectively.

Also, preferably, the distributor includes a first connection portion that is connected to the second outlet port outwardly, and the connection pipe includes a second connection portion in which the first connection portion is inserted and fitted into the inside .

Preferably, the second connection portion includes: a housing defining a channel therein; A first engaging portion formed through the upper end of the housing to communicate with the channel; A second engaging portion formed to penetrate both side ends of the housing in a vertical direction; And a locking portion inserted into the second coupling portion and moving up and down with respect to the first coupling portion to open and close at least a part of the channel.

Preferably, the locking portion includes: a supporting portion inserted and movable in the second engaging portion; A top locking part and a bottom locking part for connecting the upper end and the lower end of the support part, respectively; And an opening / closing part formed to pass through the support part, the upper end locking part, and the lower end locking part so as to correspond to the pipe line.

Preferably, when the locking portion moves downward relative to the first engaging portion, at least a portion of the locking portion closes at least a part of the channel so that insertion of the first connecting portion into the inside of the second connecting portion, Can be prevented.

In addition, preferably, when the locking portion is moved upward relative to the first engaging portion, the locking portion may open the channel to allow insertion of the first connecting portion into the second connecting portion.

In addition, preferably, a receiving groove is formed in the outer surface of the first connecting part to receive at least a part of the locking part to prevent the first connecting part inserted into the second connecting part from departing from the first connecting part.

Preferably, the vortex piping is disposed between the connection pipe and the inlet of the cylinder and through which the fluid flows; And a vortex generation pipe disposed in a region inside the vortex pipe to generate a vortex of the fluid.

Further, preferably, the vortex generating unit includes at least one helical vane coupling about a rotation axis; And a circumferential portion contacting the inner surface of the vortex pipe and having the helical blade fixedly coupled thereto.

In addition, preferably, the vortex pipeline of the vortex pipeline at the upstream end of the vortex generation section may have a smaller cross sectional area toward the vortex generation section.

Preferably, a screw thread for engaging with the inlet port of the cylinder and the connection pipe is protruded to a predetermined length on the inner surfaces of both ends of the vortex pipe, thereby limiting movement of the circumferential portion.

Also preferably, at least one valve for regulating the flow of the fluid via the distributor; And a controller for controlling opening and closing of the valve.

Further, preferably, the compressed air supply unit supplies the compressed air to the distributor; A scale removing liquid supplier for providing the scale removing liquid to the distributor; And a cooling water supplier for supplying the cooling water to the distributor.

According to the present invention, a fluid such as cooling water, compressed air, and a descaling liquid is sequentially supplied to and withdrawn from a cylinder through a distributor and a connection pipe, thereby facilitating the molding process by the cylinder and removing contaminants in the cylinder.

Further, according to the present invention, the piping or pipeline through which a variety of fluids such as cooling water, compressed air, and scale removing liquid are flowed can be integrated to facilitate manufacture and use.

Further, according to the present invention, it is possible to improve the difficulty in changing the use or structure by implementing the connection relationship between the pipes more easily through the configuration of the lock portion.

Further, according to the present invention, by generating a spiral flow in the fluid flowing into the cylinder, the function of each fluid moving in the cylinder can be further improved.

BRIEF DESCRIPTION OF THE DRAWINGS A brief description of each drawing is provided to more fully understand the drawings recited in the description of the invention.
1 shows a block diagram of a cylinder washing apparatus according to an embodiment of the present invention.
2 shows a distributor of a cylinder washing apparatus according to an embodiment of the present invention.
3 shows a connection pipe of a cylinder cleaning apparatus according to an embodiment of the present invention.
4A and 4B illustrate the operation of the connection portion of the cylinder cleaner according to an embodiment of the present invention.
FIGS. 5A and 5B illustrate the operation of the connection portion of the cylinder cleaner according to an embodiment of the present invention.
6 illustrates the operation of the connection of the cylinder cleaner according to an embodiment of the present invention.
7 shows a vortex generating piping of a cylinder washing apparatus according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive. In addition, embodiments of the present invention will be described below, but the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "indirectly connected" . Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements.

1 shows a block diagram of a cylinder washing apparatus according to an embodiment of the present invention.

Referring to FIG. 1, a cylinder cleaner 1000 may include a cylinder 100, a distributor 200, and a connection pipe 300.

The cylinder 100 is provided with a space (i.e., a molding space) having a predetermined shape for molding, and it is possible to inject and cool the heated, molten resin or the like into a molding space to generate an injection have.

Specifically, the cylinder 100 may include an inlet through which the fluid flows from the outside, a conduit through which the fluid flows through the inlet, and an outlet through which the fluid is discharged from the conduit, wherein the conduit is adjacent And can be formed in communication with the molding space.

Here, the fluid may include at least one of cooling water, compressed air, and a descaling liquid. Therefore, when the cooling water flows through the pipe, the molding space can be cooled, and the injection material can be produced in a shorter time. In addition, when the descaling liquid flows through the pipeline, foreign matter such as scales formed in the pipeline can be removed. Further, when the compressed air flows through the pipeline, the compressed air can remove the residual fluid such as cooling water and scale removing liquid remaining in the pipeline, and foreign matter.

The distributor 200 supplies the fluid introduced from the outside to the cylinder 100, recovers the fluid from the cylinder 100, and discharges the fluid to the outside. At least one inlet, at least one outlet, and at least one connecting line 300 may be included for inlet and outlet of these, and a valve for controlling the flow of fluid may be disposed for each inlet and outlet.

The connecting piping 300 can be connected to the cylinder 100 and the distributor 200 in fluid communication. The connection pipe 300 may be composed of a plurality of pipes. Specifically, the first connection pipe 300 connects the outlet of the distributor 200 with the inlet of the cylinder 100, so that the fluid introduced from the outside through the distributor 200 can be injected into the cylinder 100 The second connection pipe 300 connects the outlet of the cylinder 100 and the inlet of the distributor 200 to inject the fluid discharged from the cylinder 100 into the distributor 200. In this case, a valve or the like may be added to the connection pipe 300 to adjust the flow direction of the fluid flowing through the connection pipe 300 .

Although not shown in FIG. 1, the cylinder cleaner 1000 may further include a vortex generation pipe (reference numeral 400 in FIG. 7). The vortex generation piping (reference numeral 400 in FIG. 7) is for generating a spiral flow in the fluid flowing into the cylinder 100, and will be described in more detail in FIG.

Although not shown in FIG. 1, the cylinder cleaner 1000 can control the opening and closing of the valve to specify the fluid flowing to the cylinder cleaner 1000, and to control the flow of the fluid. Specifically, the control unit provides the cooling water to the cylinder 100 through the distributor 200 and the connecting pipe 300 to cool the forming space of the cylinder 100, and again to cool the cooling water through the connecting pipe 300 and the distributor 200 To the outside. The control unit then supplies the compressed air to the cylinder 100 through the distributor 200 and the connection pipe 300 and discharges the compressed air to the outside through the connection pipe 300 and the distributor 200, ), The connecting piping 300 and the remaining cooling water in the cylinder 100 can be removed. The control unit supplies the descale liquid to the cylinder 100 through the distributor 200 and the connecting pipe 300 and discharges the discharged liquid to the outside through the connecting pipe 300 and the distributor 200, ), The connecting pipe 300, and the scales in the cylinder 100 can be removed. Thereafter, the control unit can supply the compressed air back to the distributor 200, the connecting pipe 300, and the cylinder 100, and recover the compressed air, thereby removing the remaining scale-removing liquid.

Although not shown in FIG. 1, the cylinder cleaner 1000 may further include at least one of a compressed air supply unit, a scale removal liquid supply unit, and a cooling water supply unit. Here, the compressed air supply unit supplies compressed air to the distributor 200, the descaling liquid supply unit supplies the descaling liquid to the distributor 200, and the cooling water supply unit supplies the cooling water to the distributor 200. According to the embodiment, at least one of the compressed air, the coolant, and the descaling fluid provided to the distributor 200 may be recovered to at least one of the compressed air supply unit, the descale liquid supply unit, and the cooling water supply unit, .

2 shows a distributor of a cylinder washing apparatus according to an embodiment of the present invention.

As shown, the dispenser 200 may include at least one inlet 210, 230, at least one outlet 220, 240, and at least one connecting conduit 250, 260.

The dispenser 200 includes at least one first inlet 210 through which fluid is introduced from at least one of the compressed air supply, the descaling liquid supply, and the cooling water supply, And one second inlet 230 through which the fluid flows from the cylinder 100 through the connecting pipe 300.

The outlets 220 and 240 are for discharging the fluid. The outlets 220 and 240 include at least one first outflow port 220 for discharging the fluid to the outside such as a compressed air supply, a de-scaling fluid supply, a cooling water supply, And one second outlet 240 for providing to the cylinder 100 through the piping 300.

The connecting conduits 250 and 260 are for connecting the inlet ports 210 and 230 and the outlet ports 220 and 240 and may include at least one first inlet 210 and a second inlet 210 for fluid flow to the cylinder 100. [ One first connection line 250 connecting the outlet 240 and one second connection line 250 connecting the second inlet 230 and the at least one first outlet 220 for fluid flow to the outside 260).

As such, at least one first inlet 210 is connected through one first connection line 250 and again connected to the second outlet 240, and similarly, at least one first outlet 220 is connected A simple and efficient dispenser 200 having a complicated structure of pipelines, inlets, and outlets while flowing various kinds of fluids by connecting the same through a second connection pipe 260 and connecting the same to the second inlet 230 ). ≪ / RTI >

Also, as shown, the dispenser 200 may further include a first connection 270 coupled to the second outlet 240. The first connection portion 270 may be detachably coupled to the connection pipe 300, particularly, the second connection portion 320 of the connection pipe 300, as will be described in more detail below. This makes it possible to easily change the connection relationship between pipes or pipes.

2, and may also have a second outlet 240 (not shown) for connection to the connection pipe 300. The second outlet 270 may have a different shape than the first connection 270 shown in FIG. 2, Or other inlets 210 and 230 as well as other outlets 220 and / or inlets 210 and 230.

3 shows a connection pipe of a cylinder cleaning apparatus according to an embodiment of the present invention.

3 (a), the connection pipe 300 may include a pipe 310 through which the fluid flows and a second connection 320 that is disposed at one end of the pipe 310. The second connection part 320 connects the pipe 310 to at least one of the cylinder 100 and the distributor 200. For example, when the first connection part 270 of the distributor 200 is inserted And can be engaged with each other.

Referring to FIG. 3 (b), the second connection portion 320 may include a housing 322, a first coupling portion 324, a second coupling portion 326, and a locking portion 328.

The housing 322 has a channel formed therein for communicating with the pipe 310 to provide a space through which the first connection part 270 is inserted.

The first engaging portion 324 extends through the upper end of the housing 322 and is configured to communicate with the conduit while the second engaging portion 326 is formed through both ends of the housing 322 in the vertical direction .

The locking portion 328 may be disposed on the first engaging portion 324 and the second engaging portion 326. Specifically, the locking portion 328 is inserted into the second engaging portion 326, and can move upward and downward with respect to the first engaging portion 324 to open and close at least a part of the channel.

To this end, the locking portion 328 is configured to connect the upper ends of the supporting portions 328-1 and 328-1 'and the supporting portions 328-1 and 328-1', which are inserted into the first engaging portion 324, The upper lock portion 328-3 and the lower lock portion 328-5 and the support portions 328-1 and 328-1 'that connect the lower ends of the support portions 328-1 and 328-1' And an opening / closing portion 328-7 formed to communicate with the channel between the upper lock portion 328-3 and the lower lock portion 328-5.

As will be described in greater detail below, the locking portion 328 is configured such that the support portions 328-1 and 328-1 'are inserted into the through regions of the second engagement portion 326 and move up and down, -3) closes and opens at least part of the channel, the insertion of the first connection portion 270 can be controlled. The upper and lower ends of the supporting portions 328-1 and 328-1 'are connected to the upper and lower ends of the locking portion 328 and the lower locking portion 328-3, The locking portion 328 moves downward due to gravity. Therefore, when no external force acts on the locking portion 328 (i.e., when the locking portion 328 does not move upward) The first connection part 270 may not be inserted into the second connection part 320 and the first connection part 270 may not be separated by the locking part 328 when the first connection part 270 is inserted.

4A and 4B illustrate the operation of the connection portion of the cylinder cleaner according to an embodiment of the present invention.

As shown, the second connection portion 320 can prevent the first connection portion 270 from being inserted into the housing 322 through the lock portion 328. [ To this end, in the second connection portion 320, the locking portion 328 can move downward with respect to the first engagement portion 324. That is, at least a portion of the locking portion 328 closes at least a part of the channel so that the first connection portion 270 can not be completely inserted into the inside of the channel of the housing 322.

In particular, since the lock portion 328 is formed in the vertical direction with respect to the housing 322, when the external force is not applied, at least part of the channel of the housing can be kept closed by gravity. In this case, the first connection part 270 may not be coupled to the second connection part 320 when a normal storage state or a predetermined external force is not applied by the user.

FIGS. 5A and 5B illustrate the operation of the connection portion of the cylinder cleaner according to an embodiment of the present invention.

The second connection part 320 may control the locking part 328 to allow the first connection part 270 to be inserted into the housing 322. For this purpose, the locking portion 328 can be moved upward with respect to the first engaging portion 324 in the second connecting portion 320. That is, unlike the case in which the lock portion 328 existing on the lower side with respect to the first engagement portion 324 closes at least a part of the channel, the lock portion 328 moves upward with respect to the first engagement portion 324 The first connection part 270 can be completely inserted to the inside of the channel of the housing 322 so as to be coupled with the second connection part 320.

6 illustrates the operation of the connection of the cylinder cleaner according to an embodiment of the present invention.

When the first coupling part 270 is fully inserted into the second coupling part 320 and the coupling part 328 is removed from the first coupling part 324, 328 may again move downward with respect to the first engaging portion 324.

At this time, a receiving groove 272 is formed in the outer surface of the first connecting portion 270 to accommodate at least a part (for example, a part of the lower end of the upper locking portion 328) of the locking portions 328 moving downward . The movement of the first connection portion 270 is prohibited by the lock portion 328 accommodated in the receiving groove 272 so that the first connection portion 270 is prevented from separating from the second connection portion 320 regardless of the intention of the user can do.

7 shows a vortex generating piping of a cylinder washing apparatus according to an embodiment of the present invention.

The vortex generation piping 400 is for forming a spiral flow (that is, a vortex) in the incoming fluid and is provided between the connection pipeline 300 and the inlet of the cylinder 100 so that a spiral flow It is possible to cause the fluid to function more effectively in the cylinder 100. Fig. For example, by increasing the moving path of the fluid by the spiral flow (that is, by increasing the contact area and time with the channel in the cylinder 100), the cooling effect of the cooling water, the scale removing effect of the scaling liquid, The effect of removing residual water and the like can be further improved.

The vortex generation piping 400 may include a vortex pipeline 410 and a vortex generation unit 420.

The vortex pipe 410 is provided between the connection pipe 300 and the inlet of the cylinder 100 and can provide a space through which the fluid flows and a space where the vortex generating unit 420 is disposed. The vortex piping 410 may be detachably coupled to the cylinder 100 and the connection piping 300. For this purpose, threads 414 and 414 'may be formed on both ends of the vortex piping 410 so that the first connection portion 270 and / Or the second connection portion 320 may be coupled.

The vortex generators 420 may be disposed in one region of the vortex pipeline 410 and may include at least one helical vane 422 and a circumferential portion 424. Here, the helical wing 422 may generate at least one of the helical wings 422, which is coupled to at least one of them about the rotation axis to rotate when the fluid flows, The peripheral portion 424 is in contact with the inner surface of the vortex pipeline 410, and the outer end of the helical vane 422 can be engaged. Friction or impact that may occur between the helical blade 422 and the side surface of the vortex pipeline 410 can be reduced or eliminated when the helical vane 422 is rotated through the peripheral portion 424. [ For this, the peripheral portion 424 preferably has a shape corresponding to the inner surface of the vortex pipe 410 in contact with the peripheral portion 424, but is not limited thereto.

The channel 412 of the vortex pipe 410 adjacent to the vortex generating unit 420 of the vortex pipe 410 (for example, at the front end of the vortex generating unit 420) moves toward the vortex generating unit 420 Sectional area can be made small. That is, the flow of fluid may be more concentrated to increase the flow rate of the fluid and allow fluid to flow in the central region of the spiral wing 422. This creates and accelerates the spiral flow of the faster fluid and, in particular, when the fluid flows into the peripheral region (except the central region) of the spiral wing 422, the chance of contact between the fluid and the spiral wing 422 is reduced, It is possible to prevent the problem that the flow is not formed.

The vortex generators 420, particularly the vortex generators 420 and the vortex generators 420, are formed by projecting the threads 414 and 414 'of the vortex pipe 410 to the inside with a predetermined length and being formed adjacent to the vortex generators 420. [ Can be restricted. That is, as the vortex generating unit 420 is rotated according to the flow of the fluid, the vortex generating unit 420 moves in the flow direction of the fluid, and unintended shock or unintended vortex is generated in the connection pipe 300 It is possible to prevent the vortex generators 420 from moving through the threads 414 and 414 '. However, this is an example, and a separate configuration (for example, a movement restricting part) other than the threads 414 and 414 'may be formed to protrude from the inside of the vortex pipe 410 adjacent to the vortex generating part 420. [

As described above, an optimal embodiment has been disclosed in the drawings and specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Cylinder Cleaning Apparatus 1000 A cylinder 100,
The distributor 200 includes a first inlet 210,
The second inlet 230, the first outlet 220,
The second outlet 240, the first connection conduit 250,
The second connection pipe 260, the first connection part 270,
The receiving groove (272) connecting piping (300)
The pipe 310, the second connection part 320,
The housing (322) first engagement portion (324)
The locking portion 328 of the second engagement portion 326,
The upper locking portions 328-3 of the supporting portions 328-1 and 328-1 '
The lower lock portion 328-5 opening / closing portion 328-7,
Vortex generation piping (400) Vortex generation piping (410)
The vortex generating unit 420 includes a channel 412,
The threads 414, 414 ', the spiral wing 422,
The peripheral portion 424,

Claims (15)

As a cylinder cleaning apparatus,
A cylinder for providing a space for molding therein;
A distributor for supplying and recovering a fluid introduced from the outside to the cylinder; And
And a connection pipe communicating the cylinder and the distributor,
Wherein the fluid comprises at least one of cooling water, compressed air, and a descaling fluid,
Wherein the distributor includes a first connection portion that is connected to the outflow port of the distributor outwardly and the connection pipe includes a second connection portion in which the first connection portion is inserted and fit-
Wherein the second connection portion comprises: a housing defining a conduit therein; A first engaging portion formed through the upper end of the housing to communicate with the channel; A second engaging portion formed to penetrate both side ends of the housing in a vertical direction; And a lock portion inserted into the second engagement portion and moving upward and downward relative to the first engagement portion to open and close at least a part of the channel,
The locking part includes: a supporting part inserted into the second coupling part and movable; A top locking part and a bottom locking part for connecting the upper end and the lower end of the support part, respectively; And an opening / closing portion formed so as to pass through between the support portion, the upper end locking portion, and the lower end locking portion so as to correspond to the pipe. 2. The apparatus of claim 1,
At least one first inlet through which the fluid flows from the outside;
At least one first outlet for discharging the fluid to the outside;
A second outlet for discharging the fluid to the connection pipe;
A second inlet through which the fluid flows from the connecting pipe;
A first connection conduit connecting the at least one first inlet and the second outlet; And
And a second connection line connecting the at least one first outlet and the second inlet. 3. The method of claim 2,
Wherein the connecting piping connects the second outlet and the second inlet of the distributor to the inlet and outlet of the cylinder, respectively. delete delete delete The method according to claim 1,
Wherein at least a portion of the locking portion closes at least a portion of the conduit to prevent insertion of the first connection portion into the second connection portion when the locking portion is moved downward relative to the first engagement portion, Device. The method according to claim 1,
Wherein when the locking portion moves upward relative to the first engaging portion, the locking portion opens the channel to allow insertion of the first connecting portion into the second connecting portion. 9. The method of claim 8,
Wherein a receiving groove is formed in an outer surface of the first connecting portion to receive the at least one portion of the locking portion to prevent the first connecting portion inserted into the second connecting portion from being separated from the first connecting portion. The method according to claim 1,
A vortex pipe installed between the connection pipe and an inlet of the cylinder and through which the fluid flows; And
And a vortex generating pipe disposed in a region inside the vortex pipe to generate a vortex of the fluid. The vortex generator according to claim 10,
At least one helical blade coupling about a rotational axis; And
And a circumferential portion abutting against an inner surface of the vortex pipe and fixedly coupled with the helical blade. 11. The method of claim 10,
Wherein a cross-sectional area of the vortex pipe upstream of the vortex generating unit is smaller toward the vortex generating unit. 12. The method of claim 11,
Wherein a threaded portion for engaging with the inlet port of the cylinder and the connection pipe is protruded to a predetermined length on the inner surface of both ends of the vortex pipe to restrict movement of the circumferential portion. The method according to claim 1,
At least one valve for regulating the flow of the fluid via the distributor; And
And a control unit for controlling opening and closing of the valve. The method according to claim 1,
A compressed air supplier for supplying the compressed air to the distributor;
A scale removing liquid supplier for providing the scale removing liquid to the distributor; And a cooling water supplier for supplying the cooling water to the distributor.

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