KR101874287B1 - Apparatus for cleaning Quartztube - Google Patents

Abstract

The present invention relates to an apparatus for cleaning a quartz tube which can improve washing efficiency and shorten washing time by cleaning the surface of a quartz tube with a microbubble-mixed washing solution. According to embodiments of the present invention, the apparatus for cleaning a quartz tube comprises: a washing solution storage tank to store a washing solution; a first flow passage in which the washing solution stored in the washing solution storage tank flows; an air supply unit to supply air to the washing solution flowing in the first flow passage to mix the washing solution and air; a supply pump to pump the air-mixed washing solution mixed with air by the air supply unit; and a microbubble producing unit to convert the air included in the air-mixed washing solution supplied from the supply pump into microbubbles to produce a microbubble-mixed washing solution in which the microbubbles and washing solution are mixed, collect at least a portion of the produced microbubble-mixed washing solution in the washing solution storage tank, and supply at least a portion of the produced microbubble-mixed washing solution to a cleaning module on which a quartz tube is arranged.

Description

{Apparatus for cleaning Quartztube}

The present invention relates to a quartz tube cleaning apparatus, and more particularly, to a quartz tube cleaning apparatus capable of cleaning a surface of a quartz tube with a fine bubble mixed cleaning liquid to shorten a cleaning efficiency and a cleaning time.

Scale is generated due to contaminants in the water to be treated depending on the operation of a series of devices or devices including a water treatment device. This scale is a generic term including all the non-sticky sediments, coagulates and the like of the main subject of the mineral, and it is supposed that various ions (mainly calcium, magnesium, silica, aluminum etc. including calcium) existing in the water to be treated are in a supersaturated solution state And crystallized.

This scale is adhered to the surface of the quartz tube of the ultraviolet sterilizer, which is a component of the water treatment apparatus, to contaminate the surface of the quartz tube. When the surface of the contaminated quartz tube is left to be washed for a long time, the amount of ultraviolet ray to be irradiated to microorganisms is reduced, and the efficiency of the sterilization treatment is drastically reduced. In addition, quartz tubes may not be renewed due to contamination. Therefore, the scale adhering to the quartz tube surface must be removed periodically or aperiodically.

FIG. 1 is a view showing a quartz pipe cleaning apparatus according to the prior art. Specifically, FIG. 1 shows a machine-chemical cleaning apparatus (aka ActicleanTM) manufactured and sold by Trojan Co., which is a method of pumping a UV sterilizing module to the ground and separately using a pumping mechanism for each disinfection module.

This product contains a chemical cleaning solution in a constant volume collar (1) surrounding the outer surface of a quartz tube and moves the collar (1) back and forth along the quartz tube (2) by driving a motor or hydraulic system to remove contaminants And the like.

At this time, there is a problem that the amount of the chemical cleaning fluid filled in the collar 1 becomes insufficient due to the operation of the cleaning device or gradually becomes contaminated with the chemical cleaning liquid itself.

In addition, when the capacity of the chemical cleaning liquid is insufficient in the interior of the collar 1, the cleaning liquid exists only in the lower portion, and the cleaning efficiency of the upper surface of the quartz tube 2 is seriously lowered. If the chemical cleaning liquid is contaminated , The chemical cleaning liquid itself has a problem of deteriorating the ability to clean the quartz tube because the solubility of the contaminants is lowered.

In addition, there is a limit to dissolve the pollutants in a short period of time when the chemical cleaning liquid itself flows by the motor or the hydraulic pressure because there is almost no flow of the chemical cleaning liquid. When the quartz tube and the wiper ring are replaced, operation of the ultraviolet disinfection facility is stopped, It is necessary to replace the quartz tube and the wiper ring after draining the chemical cleaning solution to the ground, replace the chemical cleaning solution with the collar after the replacement, and then reinstall the module and operate it .

Also, when the injected chemical cleaning solution is used or when the cleaning liquid is contaminated, the operation of the ultraviolet disinfection facility is stopped and the disinfection module must be lifted in the same manner as described above.

Registration Utility Model No. 20-0336767

An object of the present invention is to provide a quartz tube cleaning apparatus capable of shortening the cleaning efficiency and cleaning time by cleaning the surface of a quartz tube with a fine bubble mixed cleaning liquid.

In the quartz tube cleaning apparatus according to the embodiment of the present invention,

A cleaning liquid storage tank for storing cleaning liquid; A first flow path through which the cleaning liquid stored in the cleaning liquid storage tank flows; An air supply unit for supplying and mixing air to the cleaning liquid flowing through the first flow path; A supply pump for pumping air mixed cleaning liquid mixed with air by the air supply unit; And the air contained in the air-mixed cleaning liquid supplied from the supply pump is converted into a micro-fabric so as to produce a micro-bubble mixed cleaning liquid in which the micro-fabric and the cleaning liquid are mixed, and at least a part of the resultant micro-bubble mixed cleaning liquid is returned to the cleaning liquid storage tank And at least a part of the generated minute bubble mixed cleaning liquid is supplied to the cleaning module in which the quartz tube is disposed.

In the quartz pipe cleaning apparatus according to the embodiment of the present invention, a flow rate valve for controlling the flow rate of the cleaning liquid may be installed in the first flow path.

In the quartz pipe cleaning apparatus according to the embodiment of the present invention, the air supply unit may be formed in the form of a venturi tube having an air inlet through which external air can be introduced.

In the quartz tube cleaning apparatus according to the embodiment of the present invention, the air supply unit may be an air inflow hole formed through the first flow path.

In the apparatus for cleaning a quartz tube according to the embodiment of the present invention, the fine bubble generating unit may be formed in a shape capable of spiral movement of the air mixed cleaning liquid introduced from the supply pump.

In the quartz tube cleaning apparatus according to the embodiment of the present invention, the fine bubble generating unit may be formed in a biconical shape having a larger diameter at the center and a smaller diameter toward both sides.

In the apparatus for cleaning a quartz tube according to an embodiment of the present invention, the fine bubble generating unit may be formed in a polygonal pyramid shape having a large cross-sectional area at the center and a smaller cross-sectional area toward both sides.

In the quartz tube cleaning apparatus according to the embodiment of the present invention, a concave-convex structure may be formed on the space wall surface forming the micro-bubble generator.

In the apparatus for cleaning a quartz tube according to an embodiment of the present invention, a fine bubble recovery port communicating with the cleaning liquid storage tank is formed at one side of the fine bubble generator, A connection port communicating with the two flow paths may be formed.

In the quartz pipe cleaning apparatus according to the embodiment of the present invention, it is preferable that the inner diameter of the connection port is formed larger than the diameter of the minute bubble recovery port.

In the apparatus for cleaning a quartz tube according to an embodiment of the present invention, a guide protrusion for guiding the flow direction of the air-mixed cleaning liquid may be formed at a central portion of the fine bubble generator.

In the quartz tube cleaning apparatus according to an embodiment of the present invention, the microbubble mixed washing liquid recovered into the washing liquid storage tank in the microbubble generating unit is mixed with the washing liquid stored in the washing liquid storage tank, .

In the quartz tube cleaning apparatus according to the embodiment of the present invention, the cleaning module includes a support for fixing and supporting the quartz tube, and a cleaning liquid column for cleaning the surface of the quartz tube, And the cleaning liquid column can communicate with the third flow path that flows into the cleaning liquid storage tank.

In the quartz pipe cleaning apparatus according to the embodiment of the present invention, the third flow path may be provided with a flow rate sensor for measuring the flow rate change of the rinse solution or a hydraulic pressure sensor for measuring the change in the hydraulic pressure of the rinse solution.

The quartz tube cleaning apparatus may further include an air pump for supplying air for recovering the cleaning liquid remaining in the cleaning module after completion of the quartz tube cleaning.

 Other specific embodiments of various aspects of the present invention are included in the detailed description below.

According to the embodiment of the present invention, the surface of the quartz tube can be cleaned with the fine bubble mixed cleaning liquid to shorten the cleaning efficiency and the cleaning time.

FIG. 1 is a view showing a quartz pipe cleaning apparatus according to the prior art.
2 is a conceptual diagram illustrating a quartz tube cleaning apparatus according to an embodiment of the present invention.
FIG. 3 is a view showing in detail one embodiment of the portion A in FIG.
4 is a cross-sectional view taken along the line B-B 'of FIG.
Fig. 5 is a diagram showing another embodiment of the portion A in Fig. 2 in detail.
6 is a cross-sectional view taken along line C-C 'of FIG.
7 is a view showing a cleaning liquid column disposed inside the cleaning module.
8 is a view showing a collar which is one component of a cleaning liquid column.
FIG. 9 is a view showing a flow of a cleaning liquid when a cleaning liquid is supplied in a quartz tube cleaning apparatus according to an embodiment of the present invention. FIG.
FIG. 10 is a view showing a flow of cleaning liquid during the recovery of a cleaning liquid in a quartz tube cleaning apparatus according to an embodiment of the present invention. FIG.
11 to 19 are views for explaining the effect of the quartz tube cleaning apparatus according to an embodiment of the present invention.

The present invention is capable of various modifications and various embodiments and is intended to illustrate and describe the specific embodiments in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as "comprises" or "having" are used to designate the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof. Hereinafter, a quartz pipe cleaning apparatus according to an embodiment of the present invention will be described with reference to the drawings.

2 is a conceptual diagram illustrating a quartz tube cleaning apparatus according to an embodiment of the present invention.

2, the apparatus for cleaning a quartz tube according to an embodiment of the present invention includes a cleaning liquid storage tank 100, an air supply unit 200, a supply pump 300, a fine bubble generator 400, A module 500, and an air pump 600.

The cleaning liquid storage tank 100 has a predetermined size and shape, and a space for accommodating the chemical cleaning liquid is formed therein. A chemical cleaning solution (hereinafter referred to as a "cleaning solution") is a solution for removing a scale fixed on the surface of a quartz tube by a chemical reaction, and may be, for example, a solution diluted with 3-5% phosphoric acid.

An air discharge port 110 for discharging the air inside the cleaning liquid storage tank 100 to the outside may be formed on the upper surface or side surface of the cleaning liquid storage tank 100. [ A level sensor 120 for sensing the level of the chemical cleaning liquid contained in the cleaning liquid storage tank 100 may be formed at a predetermined position of the cleaning liquid storage tank 100 or at a position spaced apart from the cleaning liquid storage tank 100.

A first flow path (L1) through which a cleaning fluid stored in the cleaning fluid storage tank (100) flows is formed on a lower surface or a side surface of the cleaning fluid storage tank (100). The first flow path L1 may have a tubular shape having a predetermined outer diameter and an inner diameter. The first flow path L1 may be provided with a flow valve V1 for connecting the cleaning liquid storage tank 100 and the supply pump 300 and selectively controlling the flow rate of the cleaning liquid flowing through the first flow path L1 .

The air supply unit 200 supplies air to the cleaning liquid flowing through the first flow path L1 to mix the cleaning liquid and the air. The air-mixed cleaning liquid mixed with the air flows into the supply pump 300. The air supply unit 200 is formed in communication with the first flow path L1 and is capable of supplying external air to the first flow path L1.

For example, the air supply unit 200 may be an air inflow hole formed at a predetermined position of the first flow path L1. The air supply unit 200 may be an air pump communicating with the first flow path L1.

3, the air supply unit 200 may be formed in the form of a venturi tube having an air inlet through which external air can be introduced. The venturi pipe may be connected to an air passage L5 through which outside air can flow. When the cleaning liquid flowing through the first flow path L1 passes through the narrow region of the venturi tube, the flow velocity is increased, and accordingly, the pressure in the narrow region is reduced. The pressure gradient is formed by the pressure reduction. Even if there is no separate air pump, the outside air can flow into the first flow path L1 through the air flow path L5 and be mixed with the cleaning liquid. The air flow path L5 may be formed with a flow rate valve V2 for adjusting the flow rate of the air flowing into the venturi pipe and a check valve V3 for preventing the air or the washing liquid from flowing backward.

The feed pump 300 sucks the air supplied by the air feeder 200 into the feed pump and performs primary crushing by the impeller in the feed pump to facilitate the production of fine bubbles. Also, the supply pump 300 pumps the air mixed cleaning liquid mixed with air to the fine bubble generating unit 400 to accelerate the air mixed cleaning liquid. The supply pump 300 forms a pressure gradient so that the cleaning liquid can flow through the first to third flow paths.

The micro-bubble generating unit 400 converts the air contained in the air-mixed cleaning liquid supplied from the supply pump 300 into a micro-bubble to produce a micro-bubble mixed cleaning liquid in which the micro-bubbles and the cleaning liquid are mixed. The micro-bubble generator 400 supplies at least a part of the produced micro-bubble mixed cleaning liquid to the cleaning liquid storage tank 100 and supplies the remaining portion of the produced micro-bubble mixed cleaning liquid to the cleaning module 500 in which the quartz tube is disposed .

This will be described with reference to Figs. 3 to 6. Fig. 3 is a cross-sectional view taken along line B-B 'of FIG. 3, and FIG. 5 is a cross-sectional view taken along line B-B' of FIG. And FIG. 6 is a cross-sectional view taken along line C-C 'of FIG.

3 and 4, the cleaning liquid stored in the cleaning liquid storage tank 100 flows along the first flow path L1 and is mixed with the air supplied by the air supply unit 200, and is supplied to the supply pump 300 ≪ / RTI > The introduced air mixed cleaning liquid is pumped by the supply pump 300 and accelerated to flow into the microbubble generator 400.

The fine bubble generating unit 400 is formed in such a shape that the air mixed cleaning liquid introduced from the supply pump 300 can perform helical motion. The fine bubble generating unit 400 may be formed as a biconical space having a larger diameter at the center and a smaller diameter toward both sides. Here, the central portion does not necessarily mean the center. The biconical shape may be a symmetrical shape in which conical shapes on both sides are symmetrical, and an asymmetrical shape in which conical shapes on both sides are asymmetric. Of course, the biconical shape here is only one example, and the present invention is not limited thereto. For example, the microbubble generator 400 may be formed as a polygonal pyramidal space having a large cross-sectional area at the center and a cross-sectional area smaller toward the both sides.

The air mixed washing liquid introduced from the supply pump 300 is helically moved while striking against the wall surface of the space forming the microbubble generator 400, and a certain volume of air contained in the air mixed washing liquid is split into smaller air bubbles do. In the present specification, a certain volume of air is defined as a small volume, and a small volume of air bubbles is defined as a micropore. The minute bubbles can be formed in a micrometer size and can be formed in a nanometer size by repetitive differentiation according to the repeated circulation of a cleaning liquid to be described later.

The concavo-convex structure 410 may be formed on the space wall of the micro-bubble generator 400. The concave-convex structure 410 can promote the differentiation of air contained in the air-mixed cleaning liquid while increasing the contact area with the air-mixing cleaning liquid. That is, the air can bump against the angled portion of the concave-convex structure 410 while increasing the area where the air and the wall surface can collide with each other, thereby promoting differentiation of air.

The fine bubble generator 420 is formed on one side (right side in the figure) of the fine bubble generator 400 and the fine bubble generator 400 is connected to the cleaning liquid storage tank 100 through the fine bubble collector 420, Can be formed. A connection port 430 connected to the second flow path L2 may be formed on the other side (left side in the drawing) of the fine bubble generator 400. Here, it is preferable that the inner diameter of the connector 430 is formed to be larger than the diameter of the minute bubble collecting tool 420. When the diameter of the minute bubble recovery member 420 is larger than the inner diameter of the connection hole 430, the minute bubbles flowing into the second flow path L2 out of the minute bubbles generated in the minute bubble producing unit 400 are relatively decreased So that the efficiency of cleaning the quartz tube by the minute bubbles can be reduced.

Meanwhile, a guide protrusion 440 may be formed at a central portion of the micro-bubble generator 400 to guide the flowing direction of the mixed air-cleaning liquid. The air-mixed cleaning liquid may bifurcate on the guide protrusions 440 and then be diverged on both sides and spirally moved.

A part of the microbubble mixed cleaning liquid generated in the microbubble generator 400 is recovered to the cleaning liquid storage tank 100 through the microbubble recovery unit 420 and the remainder flows through the second flow path L2, 500 to clean the surface of the quartz tube disposed in the cleaning module 500.

The mixed bubble cleaning liquid recovered in the cleaning liquid storage tank 100 is mixed with the pre-stored cleaning liquid and mixed with the air supplied by the air supply unit 200 while flowing along the first flow path L1, ≪ / RTI > The introduced air mixed cleaning liquid is pumped by the supply pump 300 and accelerated to flow into the microbubble generator 400. At this time, the air mixed cleaning liquid flowing into the microbubble generator 400 includes microbubbles primarily differentiated from the air supplied by the air supplier 200. In the micro-bubble generator 400, the air is first differentiated while colliding with the space wall of the micro-bubble generator 400, and the first-differentiated micro-bubble collides with the space wall of the micro-bubble generator 400, It is secondly differentiated into a microfilter of volume.

Part of the primary differentiated microbubbles and part of the secondary differentiated microbubbles are returned to the cleaning liquid storage tank 100 through the microbubble recovery unit 420 and the remainder are flowed through the second flow path L2 Module 500 to clean the surface of the quartz tube disposed in the cleaning module 500. Since the pressure gradient from the minute bubble generator 400 to the cleaning liquid storage tank 100 is formed by the supply pump 300 during the operation of the quartz tube cleaning apparatus of the present invention, the cleaning liquid stored in the cleaning liquid storage tank 100 Bubble generating unit 400 through the minute bubble collecting unit 420.

The air supplied from the air supply unit 200 is circulated through the supply pump 300, the micro-bubble generator 400, the cleaning liquid storage tank 100, and the supply pump 300 again, Size microcavity. Of course, it can also be converted into a smaller size microcavity depending on the number of iterations.

In addition, since only a part of the fine bubble mixed cleaning liquid which is repeatedly circulated is supplied to the cleaning module 500 through the second flow path L2, the pump load of the supply pump 300 is reduced, The quartz pipe cleaning apparatus of the present invention can be operated.

5 and 6 show another embodiment of the micro-bubble generator 400. The micro- The micro-bubble generating unit 400 according to another embodiment is formed with a guide member 450 for guiding the air-mixed cleaning liquid introduced from the supply pump 300 to make a spiral motion in the micro-bubble generating unit 400. The minute bubble recovery port 420 and the connection port 430 are substantially the same as those in the above-described embodiment. The guide member 450 accelerates and accelerates the helical motion of the air-mixed cleaning liquid. Accordingly, the flow rate of the air-mixed cleaning liquid is increased, and the flow rate of air contained in the air-mixed cleaning liquid is also increased. When the accelerated air impinges on the wall surface of the micro-bubble generating part 400 or the guide member 450, micro-bubbles having a smaller volume can be generated. The guide member 450 may be formed in any shape as long as the shape of the guide member 450 can promote the flow velocity of the fine bubble generator 400.

The cleaning module 500 receives the fine bubble mixed cleaning liquid through the second flow path L2 to clean the surface of the quartz tube disposed therein. The cleaning module 500 includes a support (not shown) for fixing and supporting the quartz tube, and a cleaning solution column 510 for cleaning the surface of the quartz tube.

Hereinafter, the cleaning liquid column disposed inside the cleaning module will be described with reference to FIG. 7 is a view showing a cleaning liquid column disposed inside the cleaning module.

7, the cleaning liquid column 510 includes a geared motor 511, a screw shaft 512, a drive nut 513, a color frame 514, and a collar 5150.

The geared motor 511 rotates forward or reverse to generate a rotational force. The screw shaft 512 is forwardly or reversely rotated according to forward rotation or reverse rotation of the geared motor 511 with the rotation axis of the geared motor 511. The drive nut 513 is connected to the screw shaft 512 and moves to the left or right according to forward or reverse rotation of the screw shaft 512. The color frame 514 is configured to move leftward or rightward together as the drive nut 513 moves. The collar 5150 is connected to the second flow path L2. The fine bubble mixed cleaning liquid flowing through the second flow path L2 flows through the collar 5150 to clean the quartz tube Q surface.

The screw shaft 512 rotates in accordance with the rotation of the geared motor 511 and the drive nut 513 moves to the left and right together with the color frame 514 connected to the drive nut 513. [ As the color frame 514 moves, the collar 5150 fastened to the color frame 514 moves left and right along the surface of the quartz tube. The fine bubble mixed cleaning liquid flowing through the second flow path L2 flows into the cleaning liquid inlet port 5152 to clean the surface of the quartz tube Q and then flows into the cleaning liquid outlet port 5153, Respectively.

Hereinafter, with reference to Figs. 7 and 8, the detailed configuration of the collar 5150 will be described. 7 and 8, the collar 5150 includes an outer casing 5151, a cleaning fluid inlet 5152, a cleaning fluid outlet 5153, a rotary rotor 5154, a friction cleaning section 5155, a wringing 5156 , And a wiper ring 5157. [

The outer casing 5151 may be formed in a cylindrical shape surrounding the surface of the quartz tube (Q). A cleaning liquid inlet port 5152 through which the fine bubble mixed cleaning liquid flowing through the second flow path L2 flows and a cleaning liquid outlet port 5153 through which the fine bubble mixed cleaning liquid cleaned on the surface of the quartz tube are formed are formed in the outer casing 5151 .

The rotating rotor 5154 is formed so as to surround the surface of the quartz tube Q inside the outer casing 5151 and is formed to rotate around the surface of the quartz tube by the fine bubble mixed washing liquid flowing through the washing liquid inlet 5152.

A friction cleaning portion 5155 may be interposed between the rotating rotor 5154 and the surface of the quartz tube. The friction modifying unit 5155 may be composed of a polymer resin-based nonwoven fabric, a brush, a porous body, or the like. The friction cleaning portion 5155 is fixed to the lower portion of the rotating rotor 5154 (the quartz tube surface direction) and rotates together with the rotation of the rotating rotor 5154. Further, the friction cleaning portion 5155 is formed so as to surround the surface of the quartz tube Q while being in contact therewith. On the other hand, a rotor hole 5154a may be formed in the rotary rotor 5154 to smoothly allow the introduced fine bubble mixed cleaning liquid to smoothly penetrate the friction cleaning portion 5155.

The friction cleaning section 5155 rotates together with the rotating rotor 5154 when the rotary rotor 5154 is rotated by the fine bubble mixed cleaning liquid to bring the surface of the quartz tube Q into contact with the surface of the quartz tube 5155, To remove foreign matter.

The friction cleaning portion 5155 cleans the surface of the quartz tube by a chemical reaction by the fine bubble mixed cleaning liquid impregnated into the friction cleaning portion 5155 through the rotor hole 5154a and at the same time the friction cleaning portion 5155 cleans the quartz tube surface The surface of the quartz tube can be physically cleaned, and the cleaning efficiency can be further improved.

 The wear ring 5156 is formed to enclose and fix the quartz tube Q and prevents the quartz tube from being eccentrically moved by the operation of the collar 5150 during washing. The wiper ring 5157 is formed so as to surround the quartz tube on both sides of the outer casing 5151 and prevents the inflowing minute bubble mixed washing liquid from leaking to the outside.

The second flow path L2 may be branched by the number of the washing liquid columns 510 accommodated in the washing module 500. 2, three cleaning liquid columns 510 are disposed in the cleaning module 500, so that the second flow path L2 is branched into three flow paths, and the cleaning liquid inlets 5152 ). ≪ / RTI > At this time, a flow valve V4 for controlling the flow rate may be formed in each flow path. The flow valve V4 may be, for example, a solenoid valve.

The rinse solution outlet 5153 formed in each of the rinse solution columns 510 communicates with the third flow path L3 that flows to the rinse solution storage tank 100. After washing the surface of the quartz tube in the washing liquid column 510, the mixed microbubble washing liquid flows out through the washing liquid outlet 5153 and is recovered to the washing liquid storage tank 100 through the third flow path L3. In the recovered microbubble mixed washing liquid, the microbubbles partially disappear when the quartz tube is washed. In the process after the cleaning module 500, it is referred to as a normal cleaning liquid, not a mixed liquid cleaning liquid. Of course, microbubbles can also be included in the cleaning liquid of the recovery process.

A check valve V5 may be formed at a portion where the cleaning liquid outlet 5153 and the third flow path L3 are connected. The check valve V5 can prevent the washing liquid flowing out through the washing liquid outlet 5153 formed in any one washing liquid column 510 from flowing back to the washing liquid outlet 5153 formed in the other washing liquid column 510. [

The third flow path L3 may be provided with a flow rate sensor S1 or a hydraulic pressure sensor S2 for measuring a change in the flow rate of the cleaning liquid. The flow rate sensor (S1) or the hydraulic pressure sensor (S2) measures the change in flow rate to detect whether or not the cleaning liquid has leaked. Since the flow sensor S1 or the hydraulic pressure sensor S2 detects the leakage of the cleaning liquid from the change amount of the flow amount or the change amount of the oil pressure, precise quantitative measurement is not required.

It is possible to judge that a leak of the cleaning liquid has occurred in the first flow path L1, the second flow path L2 or the cleaning module 500 when the flow rate sensor S1 or the hydraulic pressure sensor S2 detects a change in the flow rate , The user can manually or automatically stop the operation of the device by the control unit itself. It is possible to stop the operation of the apparatus and prevent the washing liquid from leaking.

The third flow path L3 may be formed with a flow rate valve V6 for regulating the flow rate of the cleaning liquid to be returned to the cleaning liquid storage tank 100. [ The flow valve V6 may be, for example, a solenoid valve.

The air pump 600 is used to recover the cleaning liquid remaining in the collar 5150 after completion of the quartz tube cleaning. The air pump 600 supplies high-pressure air to the second flow path L2 through the air flow path L4. The air supplied to the second flow path L2 by the air pump 600 flows into the cleaning liquid inlet 5152 through the branched flow path and flows out to the cleaning liquid outlet 5153. The cleaning liquid remaining in the collar 5150 flows into the cleaning liquid outlet 5153 and flows through the third flow path L3 and is recovered to the cleaning liquid storage tank 100 by the introduced air. The check valve V7 for turning on / off the supply of air to the air flow path L4 is provided in the air flow path L4. The check valve V7 is provided in the air flow path L4 for checking whether the minute bubble mixed washing liquid is prevented from flowing into the cleaning module 500 A valve V8 is installed. In addition, the check valve V8 can prevent the air supplied from the air pump 600 from flowing backward.

Next, a cleaning method using a quartz pipe cleaning apparatus according to an embodiment of the present invention will be described with reference to FIGS. 9 and 10. FIG.

 FIG. 9 is a view showing the flow of a cleaning liquid when a cleaning liquid is supplied in a quartz tube cleaning apparatus according to an embodiment of the present invention, and FIG. 10 is a schematic diagram of a cleaning liquid in a quartz tube cleaning apparatus according to an embodiment of the present invention And the flow state is shown in Fig.

9, when the cleaning liquid is supplied from the quartz tube cleaning apparatus, the operation of the supply pump 300 is turned on and the operation of the air pump 600 is turned off.

The cleaning liquid stored in the cleaning liquid storage tank 100 flows along the first flow path L1 while being mixed with the air supplied by the air supply unit 200 and flows into the supply pump 300. [ The introduced air mixed cleaning liquid is pumped by the supply pump 300 and accelerated to flow into the microbubble generator 400.

A part of the microbubble mixed cleaning liquid generated in the microbubble generator 400 is recovered to the cleaning liquid storage tank 100 through the microbubble recovery unit 420 and the remainder flows through the second flow path L2, 500 to clean the surface of the quartz tube disposed in the cleaning module 500. The cleaning liquid having been cleaned on the surface of the quartz tube is recovered to the cleaning liquid storage tank 100 via the third flow path L3. At this time, when the flow rate sensor S1 or the hydraulic pressure sensor S2 detects a change in the flow rate of the cleaning liquid flowing through the third flow path L3, it is determined that the cleaning liquid is leaked and the operation of the apparatus is manually or automatically stopped.

10, when the cleaning liquid is recovered from the quartz tube cleaning apparatus, the operation of the supply pump 300 is turned off and the operation of the air pump 600 is turned on.

The operation of the supply pump 300 is stopped so that the cleaning liquid stored in the cleaning liquid storage tank 100 does not flow along the first flow path L1. The operation of the air pump 600 is started so that high pressure air flows through the air passage L4 and is supplied to the second flow path L2. At this time, the check valve V8 provided in the second flow path L2 prevents the air from flowing backward.

The air supplied to the second flow path L2 flows into the cleaning liquid inlet 5152 through the branched flow path and the cleaning liquid remaining in the collar 5150 flows out to the cleaning liquid outlet 5153, Flows through the third flow path (L3) and is recovered to the cleaning liquid storage tank (100).

Next, the effect of the quartz tube cleaning apparatus according to one embodiment of the present invention will be described with reference to FIGS. 11 to 19. FIG.

The test was carried out using a quartz tube for use in an ultraviolet disinfection facility and a contaminated quartz tube for long term use in a sewage treatment plant. A contaminated quartz tube is a quartz tube with a very severe contamination condition measured at an UVC 254 nm wavelength with an initial transmission of less than about 5%. Before quenching the quartz tube with a phosphate or other cleaner, A quartz tube was used that was not removed.

As shown in FIG. 11, a contaminated quartz tube was inserted into the cleaning liquid column 510 to allow the cleaning liquid to flow upwardly, and the Z region was intensively cleaned.

The cleaning solution used in the test was a cleaning solution diluted with 5% of phosphate in distilled water. The cleaning efficiency of the quartz tube was compared between when the chemical cleaning solution was circulated and when the chemical cleaning solution was not circulated, when there was micro bubbles and when there was no microbubbles. The test conditions are shown in Table 1 below.

turn Exam conditions Remarks Chemical cleaning solution Whether the cleaning fluid circulates One Phosphoric acid 5% Noncircular Maximum contact time: 5 hr 2 Phosphoric acid 5% cycle Maximum cycle time: 90 min 3 5% phosphoric acid + fine bubbles cycle Maximum cycle time: 90 min

Figs. 12 to 14 show test results according to Table 1. Fig.

12 to 14, when the results of the test are compared with the non-cyclic cleaning (FIG. 12) in which the flow of the cleaning liquid of the chemical cleaning liquid is stopped and the circulating cleaning (FIGS. 13 and 14) , A circulation type cleaning method was very effective. The circulation type was completed in about 1.5 hours, and the non-circulation method was not completed in 5 hours.

In the case of the circulation test of the washing liquid, it was confirmed that the cleaning efficiency is increased by using the mixed cleaning liquid of fine bubbles as shown in Fig. 14 as compared with the case of circulating phosphoric acid alone as shown in Fig.

To quantitatively verify the cleaning efficiency improvement, the permeability of the cleaned portion of the quartz tube was measured with a quartz tube permeability measuring device, and the measurement results are shown in FIGS. 15 to 20.

15 and 16, the circulation type cleaning (FIG. 16) was close to the permeability of the unused quartz tube at a level of 7% in terms of the permeability deviation in 1.5 hours as compared with the non-contaminated quartz tube. However, ), Even after 5 hours of contact, the difference from Mio Salinity was about 12% or more.

 16 and 17, in the case of the quartz tube (FIG. 16) washed by the circulation of the washing liquid alone, an average difference of about 7% was observed for each wavelength, and the quartz tube (FIG. 17) washed with the fine bubble mixed washing liquid An average of about 3% difference in transmittance per wavelength was observed compared to the unused new quartz tube.

FIG. 18 shows the comparison of cleaning efficiencies for pseudo time zones for each cleaning mode. The circulation type cleaning method showed a deviation within 10% regardless of whether there was microbubble after 1.5 hours. However, the noncircular type cleaning method showed a deviation of 33% or more from the nonfouling quartz tube even after 2 hours.

Referring to FIG. 19, the cleaning efficiency varied greatly depending on the presence or absence of minute bubbles when the time-dependent transmittance changes at 254 nm. In both quartz tubes, 3.5% and 7.8% of the untreated fresh quartz tube were not significantly different from each other after cleaning, but the efficiency was different according to the cleaning time.

The permeability of the quartz tube was 75% after 40 minutes of circulating cleaning, and the permeability of the quartz tube circulated with phosphoric acid alone was 76.5% after 90 minutes. The permeability of quartz tube was about 2% Respectively.

That is, in the case of a quartz tube which is washed together with the micro-bubbles, circulation washing containing micro-bubbles can be treated at a speed twice as high as that of the case where the circulation washing of phosphoric acid alone is carried out for 90 minutes, Respectively.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

100: cleaning liquid storage tank 200: air supply unit
300: Feed pump 400: Micro bubble generator
500: Cleaning module 600: Air pump
L1: first flow path L2: second flow path
L3: Third Euro

Claims (15)

A cleaning liquid storage tank for storing cleaning liquid;
A first flow path through which the cleaning liquid stored in the cleaning liquid storage tank flows;
An air supply unit for supplying and mixing air to the cleaning liquid flowing through the first flow path;
A supply pump for pumping air mixed cleaning liquid mixed with air by the air supply unit; And
Air mixed washing liquid supplied from the supply pump is converted into a micro-fabric so as to produce a micro-bubble mixed cleaning liquid in which a micro-fabric and a cleaning liquid are mixed, and a part of the resulting micro-bubble mixed cleaning liquid is recovered into the cleaning liquid storage tank, A portion of the mixed fine bubble cleaning liquid includes a fine bubble generating portion for supplying the cleaning module with a quartz tube,
And a fine bubble recovery port communicating with the cleaning liquid storage tank is formed on one side of the fine bubble generator, and a part of the fine bubble mixed cleaning liquid is recovered to the cleaning liquid storage tank,
And a connection port communicating with the second flow path connected to the cleaning module is formed on the other side of the microbubble generator. The rest of the microbubble mixed cleaning fluid flows into the cleaning module through the second flow path,
Wherein the cleaning fluid flowing through the first flow path and the fine bubble mixed cleaning fluid flowing through the second flow path flow by a pressure gradient formed by the supply pump.
The method according to claim 1,
Wherein the first flow path is provided with a flow rate valve for controlling the flow rate of the cleaning liquid.
The method according to claim 1,
Wherein the air supply unit is formed in the form of a venturi tube having an air inlet through which external air can be introduced.
The method according to claim 1,
Wherein the air supply part is an air inflow hole formed through the first flow path.
The micro-bubble generator according to claim 1,
Wherein the air mixed washing liquid introduced from the supply pump is formed into a shape capable of spiral movement.
The method according to claim 1,
Wherein the fine bubble generator is formed in a biconical shape in which the diameter of the central portion is large and the diameter is reduced toward both sides.
The method according to claim 1,
Wherein the fine bubble generating unit is formed in a polygonal pyramid shape having a cross-sectional area of a central portion thereof being large and a cross-sectional area being reduced toward both sides thereof.
The method according to claim 1,
And a concavo-convex structure is formed on a space wall surface of the fine bubble generator.
delete The method according to claim 1,
Wherein an inner diameter of the connecting port is formed to be larger than a diameter of the fine bubble collecting opening.
The method according to claim 1,
And a guide protrusion for guiding a flow direction of the air-mixed cleaning liquid is formed at a central portion of the micro-bubble generating unit.
The method according to claim 1,
Wherein the microbubble mixed washing liquid recovered into the washing liquid storage tank in the microbubble generator is mixed with the washing liquid stored in the washing liquid storage tank and flows through the first flow path.
The method according to claim 1,
The cleaning module includes a support for fixing and supporting the quartz tube, and a cleaning liquid column for cleaning the surface of the quartz tube,
The washing module receives the mixed microbubble cleaning solution generated in the microbubble generator through the second flow path,
Wherein the cleaning liquid column communicates with a third flow path that flows into the cleaning liquid storage tank.
14. The method of claim 13,
Wherein the third flow path is provided with a flow rate sensor for measuring a flow rate change of the rinse solution or a hydraulic pressure sensor for measuring a change in the hydraulic pressure of the rinse solution.
The method according to claim 1,
Further comprising an air pump for supplying air for recovering the cleaning liquid remaining in the cleaning module after completion of the quartz tube cleaning.

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