KR101765410B1

KR101765410B1 - Tank filtering apparatus with cleaning function

Info

Publication number: KR101765410B1
Application number: KR1020160019202A
Authority: KR
Inventors: 박광현
Original assignee: 박광현
Priority date: 2016-02-18
Filing date: 2016-02-18
Publication date: 2017-08-07

Abstract

The present invention provides a tank filtering device having a cleaning function configured to clean the inside of the tank without discharging a working fluid from the tank to be cleaned; thereby having a simple structure, being easily and quickly installed in the tank, and being able to perform cleaning and filtering operations in the working fluid tank while a processing operation is performed with the working fluid. More specifically, the tank filtering device having a cleaning function filters the used working fluid using two pumps and three three-way valves, and sprays the filtered working fluid inside the tank to clean the same such that the cleaning device with a simple structure is able to easily be formed. In addition, the tank filtering device is easily applied to an existing working fluid tank without the cleaning device as well as a newly-built working fluid tank. Moreover, using a vacuum pump, a pump and the three-way valves distributing flow of the fluid between the vacuum pump and the pump, and the working fluid filtered by the vacuum pump is discharged through the pump to perform a cleaning operation; thereby providing the tank filtering device with a simple structure and allows an operator to selectively use between the cleaning function and the filtering function.

Description

{TANK FILTERING APPARATUS WITH CLEANING FUNCTION}

The present invention relates to a tank filtration apparatus having a cleaning function, and more particularly, to a filtration apparatus for filtering a working fluid used as a working fluid, such as a wire cutting apparatus or a milling machine, So that foreign matter and sludge can be adhered to the inside of the tank and cleaned so as not to be fixed.

Generally, tanks for storing fluids, drilling machines, wire cutting machines, and the like are required to clean the inside of the tank because the foreign materials are adhered to the inside of the tank often after a certain period of time. Also, these tanks are the same for tanks that store ordinary oil. The following Patent Documents 1 to 4 disclose techniques for cleaning such tanks.

(Patent Document 1) Korean Patent No. 1511210

The present invention relates to a cleaning system for a drilling fluid tank and a cleaning method for the drilling fluid tank, which has a separate independent tank for cleaning, separating and recovering drilling fluid and wash water using a centrifuge without discharging to a drain system after cleaning And a cleaning method. According to the present invention, there is provided an independent washing tank and a centrifugal separator, and the drain generated by the washing is reprocessed by centrifugation without discharging the drain, so that the drain is separately recovered by the drilling fluid and the washing water, So that the water required for washing the drilling fluid tank can be considerably saved, and the cost of processing the drain can be reduced.

(Patent Document 2) Korean Patent No. 1522904

The present invention relates to a cleaning method, comprising the steps of spraying high-pressure water into the oil storage tank to liquefy the vapor or volatile organic compounds (VOCs) in the oil storage tank; Separating the sludge adhering to the inner wall of the oil storage tank by spraying washing water to the inner wall of the oil storage tank at a high pressure; And sucking the separated sludge and the wastewater after cleaning and discharging the wastewater to the outside of the oil storage tank.

(Patent Document 3) Korean Patent No. 1540076

The present invention relates to a cleaning and exchanging apparatus for a tank of a car installed in an automobile loading box. The apparatus is used for cleaning waste oil of various heavy equipment hydraulic tanks and checking the contamination degree of the waste oil in the tank when hydraulic oil is exchanged, The present invention relates to a device for cleaning and exchanging oil tanks installed in a loading box of an automobile in which equipment for purifying according to the degree of contamination and replacing with new oil can be installed in a loading box of an automobile and can be easily exchanged by movement.

(Patent Document 4) Korean Patent No. 1556939

The present invention relates to a method for cleaning a storage tank of a petroleum product, which is capable of cleaning the storage tank by cleaning a petroleum product storage tank in real time by attaching an adsorbent to the petroleum product storage tank, The present invention also relates to a method of cleaning a petroleum product storage tank, which has an effect of preventing contamination of petroleum products caused by deposits inside storage tanks which are generated when a petroleum product is stored for a long period of time.

However, there is the same problem of cleaning a working fluid tank that causes the working fluid to filter and re-use, such as a drilling machine or a wire-cutting machine.

(1) Normally, the working fluid is filtered so that it can be used again.

(2) This may result in foreign matter or sludge remaining in the tank containing the once-used working fluid, and if left in this state for a long time, foreign matter or sludge may adhere to the inner wall of the tank.

(3) Foreign matter or sludge thus adhered or adhered not only pollutes the inside of the working liquid tank, but also may contaminate the filtered working liquid again even if the working liquid is filtered again.

(4) Therefore, after a predetermined period of time, the tank for storing the working fluid should be cleaned.

(5) However, in order to clean the existing tank, it is necessary to discharge the working fluid completely, so that it takes much time to clean the tank.

(6) Furthermore, since the working fluid can not be used when cleaning the tank, the productivity is deteriorated because a device requiring the working fluid can not be used.

(7) On the other hand, since the tank cleaning is not performed for a long time and the cleaning liquid is discharged at a time, the foreign matter and the sludge are stuck in the tank, which makes it difficult to clean and the cleaning time becomes long.

Korean Registered Patent No. 1511210 (Registered on Apr. 2015) Korean Registered Patent No. 1522904 (Registered on May 5, 2015) Korean Registered Patent No. 1540076 (Registered on July 21, 2015) Korean Registered Patent No. 1556939 (Registered on Feb. 25, 2014)

The present invention contemplates such a point, and it is possible to clean the interior of the tank immediately without discharging the working liquid from the tank to be cleaned, so that the inside of the tank can be easily and quickly installed, And it is an object of the present invention to provide a tank filtration apparatus having a cleaning function that allows cleaning and filtration of a working liquid tank even in the course of a processing operation.

In particular, the present invention is configured to filter a working fluid that has been used through two pumps and three three-way valves, and to filter the filtered working fluid into the tank so that the inside of the tank is cleaned. It is another object of the present invention to provide a tank filtration apparatus having a cleaning function that can be easily applied to a new working fluid tank as well as existing working fluid tank which can be cleaned.

In addition, the present invention uses a vacuum pump, a pump, and a three-way valve for distributing a fluid flow between the vacuum pump and the vacuum pump, Another object of the present invention is to provide a tank filtration device having a cleaning function that enables selection and use of cleaning and filtration functions.

A filtration tank 100 having a filter 110 for storing the filtered working fluid according to an embodiment of the present invention to achieve this object; A first pump (200) for supplying a working fluid in a working fluid tank (T) to the filter (110) and filtering the fluid; A second pump 300 for feeding the filtered working fluid stored in the filtration tank 100 to the working fluid tank T; A first three-way valve (400) connected to an inlet side of the first pump (200); A second three-way valve (500) connected to the outlet side of the first pump (200) and connected to the first three-way valve (400) by a bypass pipe (510); A third three-way valve 600 connected to the outlet side of the second pump 300 and connected by the bypass pipe 610 between the first pump 200 and the first three-way valve 400; And a controller for controlling the first and second pumps 200 and 300 and the first to third three-way valves 400, 500, and 600.

Particularly, when the working fluid in the working fluid tank T is filtered, the controller controls the flow rate of the working fluid to be filtered, which is sucked through the first three-way valve 400, through the bypass pipe 510 ) To the filter 110 and filtration is performed so that the filtered working fluid is directly supplied to the working liquid tank T through the second pump 300 without passing through the bypass pipe 610 .

The controller supplies the working fluid filtered through the second pump 300 to the first pump 200 through the bypass pipe 610 when the working fluid tank T is cleaned, And the operation fluid filtered through the pipe 510 is injected into the working fluid tank T through the first three-way valve 400. [

On the other hand, a tank filtration apparatus having a cleaning function according to [Embodiment 2] of the present invention comprises: a filtration tank 10 having a predetermined size; A vacuum pump 20 installed above the filtration tank 10 and equipped with a filter 21; A pump 30 installed below the filtration tank 10; A three-way valve (40) for supplying a working fluid in a working fluid tank (T) to be filtered to the vacuum pump (20) or selectively supplied with the filtered working fluid from the pump (30); And a controller for selecting a flow path of the three-way valve (40) according to the driving of the vacuum pump (20) and the pump (30) to control cleaning and filtration.

The tank filtration apparatus having the cleaning function according to the present invention has the following effects.

(1) Even if a separate cleaning device is not provided, it is convenient because the inside of the working liquid tank can be cleaned by using a filtration device.

(2) Especially, it is convenient to clean without discharging all the working fluid in the working fluid tank, and it can be cleaned cleanly while reducing the cleaning time.

(3) Furthermore, since the working liquid can be used even while cleaning is performed with the tank filtration apparatus according to the present invention, it is possible to work with the apparatus using the working liquid continuously even when cleaning, thereby preventing work efficiency and productivity from being lowered .

(4) On the other hand, in the present invention, since a pump and a three-way valve are added to the structure for filtering the working fluid, the filtered working fluid is sprayed to clean the inside of the working fluid tank, The structure can be further improved and further cleaning functions can be configured.

(5) In addition, since the vacuum pump, the general pump, and the three-way valve are used for cleaning and filtering as in [Embodiment 2], both the cleaning and the filtration functions can be achieved while being easily configured, .

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view schematically showing the overall configuration of a tank filtration apparatus according to Embodiment 1 of the present invention. Fig.
FIG. 2 is an operational flow chart for showing a fluid flow when filtering with a tank filtration apparatus according to [Embodiment 1] of the present invention. FIG.
[Fig. 3] is an operational flowchart for showing a fluid flow when cleaning with a tank filtration apparatus according to [Embodiment 1] of the present invention. [Fig.
FIG. 4 is an operational flowchart for showing the flow of fluid when filtering with a tank filtration apparatus according to [Embodiment 2] of the present invention. FIG.
5 is an operational flowchart for showing a fluid flow when cleaning with a tank filtration apparatus according to [Embodiment 2] of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

The tank filtration apparatus having the cleaning function according to the first embodiment of the present invention is provided with the filtration tank 100, the first pump 200, the second pump 300, First to third three-way valves 400, 500 and 600, and a controller for controlling the pump and the three-way valve.

Particularly, in the present invention, the working fluid returned to the working fluid tank T, which stores the working fluid used in the apparatus using the working fluid like the wire cutting apparatus, is filtered and used again in this apparatus, The filtered water is injected into the working liquid tank T so that the inside of the working liquid tank T can be cleaned.

Hereinafter, this configuration will be described in more detail. Here, the working fluid tank T refers to a conventional tank such as a wire cutting apparatus or a drilling machine, which uses a working fluid such as water or oil during operation to cool and lubricate it, and then collects and stores the working fluid again. In addition, the tank filtration apparatus according to the present invention enables filtration of the working fluid collected in such a working fluid tank T so that the working fluid can be used again, and the inside of the working fluid tank T can be cleaned together with the filtration function.

1, the filtration tank 100 is provided with a filter 110 for filtering the operation liquid supplied from the operation liquid tank T and a filter 110 inside. It will be understood by those skilled in the art that the filter 110 can be appropriately selected and used in consideration of foreign substances generated according to the type of the operating fluid and the type of the apparatus to be used.

It is preferable that the filtration tank 100 is structured such that the working fluid filtered through the filter 110 is limited to the limit switch 120 so that a predetermined level can be maintained. At this time, the detection signal of the limit switch 120 is outputted to the controller to be described later and utilized to control the pump and the three-way valve.

The first pump 200 is a pump for feeding the working fluid in the working fluid tank T to the filtration tank 100 described above as shown in Fig. It is preferable that the first pump 200 is appropriately selected in consideration of the flow rate of the operation liquid to be pressure-fed and the flow rate that can be filtered through the filter 110.

3, the first pump 200 receives the filtered working fluid through the second pump 300, which will be described later, when the working fluid tank T is cleaned, T) and clean it with the pressure. Therefore, it is preferable to use a pump having sufficient capacity to withstand such a pressure.

As shown in FIGS. 1 to 3, the first pump 200 is provided with an unfiltered (not filtered) liquid in the working liquid tank T in accordance with the opening states of the first and second three-way valves 400 and 500 The working fluid is fed to the filtration tank 100 for filtration or the working fluid filtered in the filtration tank 100 is injected into the working fluid tank T to clean the inside thereof. The controller for controlling the opening states of the first and second three-way valves 400 and 500 will be described below.

The second pump 300 is a pump for returning the filtered working fluid from the filtration tank 100 to the working fluid tank T so that it can be reused as shown in FIG. At this time, the second pump 300 is pushed to the operation liquid tank T so as to use the operation liquid filtered through the third three-way valve 600, which will be described later, To the first pump (200). The flow of the working fluid will be described together with the controller for controlling the opening state of the third three-way valve 600. [

The first three-way valve 400 is connected to the inlet side of the first pump 200 and is connected to the second three-way valve 500 through a bypass pipe 510 as shown in FIG. The first three-way valve 400 connects the first pump 200 and the working fluid tank T through the control of the controller to supply the working fluid to be filtered to the first pump 200, And the working liquid tank T so as to constitute a flow path so that the filtered working fluid which has entered the first pump 200 through the second pump 300 can be injected.

As shown in Fig. 1, the second three-way valve 500 is connected to the outlet side of the first pump 200 described above and configured so that the working liquid to be filtrated is sent to the filtration tank 100 by pressure. The second three-way valve 500 is connected to the first three-way valve 400. At this time, the first three-way valve 400 is connected to the bypass pipe 510.

The second three-way valve 500 supplies the working fluid to be filtered between the first pump 200 and the filtration tank 100 or the filtered third working fluid supplied to the first pump 200 through the second pump 300, Way valve (400) to the working liquid tank (T) through the bypass pipe (510).

As shown in Fig. 1, the third three-way valve 600 is connected to the outlet side of the second pump 300 to supply the working fluid filtered by the working fluid tank T, 610 to the first pump 200 and the first three-way valve 400.

The third three-way valve 600 allows the filtered working fluid to be supplied directly to the working fluid tank T so that the working fluid can be used again or the working fluid filtered through the bypass pipe 610 can be supplied to the first pump 200 so as to be ejected from the working liquid tank T to be cleaned.

The controller controls the first and second pumps 200 and 300 and the first to third three-way valves 400, 500 and 600 to perform filtration and cleaning of the working fluid. Hereinafter, a description will be made with reference to the drawings. In the drawing, a dark arrow indicates the flow of the non-filtered working fluid, and a thin arrow indicates the flow of the filtered working fluid, respectively.

(Filtration action)

The controller causes the first pump 200 and the second pump 300 to operate simultaneously as shown in FIG. At this time, the first three-way valve 400 is controlled to be supplied to the second three-way valve 500 through the first pump 200, so that the working fluid to be filtered is prevented from reaching the bypass pipe 510.

As shown in FIG. 2, the controller controls the second three-way valve 500 so that the working fluid to be filtered is prevented from reaching the bypass pipe 510, and is controlled to be fed to the filtration tank 100 by pressure. Thus, the working fluid to be filtered passes through the filter 110 from the filtration tank 100, and is filtered to be usable again.

On the other hand, the controller controls the third three-way valve 600 as shown in FIG. At this time, the third three-way valve 600 is configured such that the filtered working fluid does not flow to the bypass pipe 610, so that the third three-way valve 600 is immediately returned to the working fluid tank T and can be used again.

(Cleaning action)

The controller causes the first pump 200 and the second pump 300 to operate simultaneously as shown in Fig. At this time, the controller controls the three-way valve to allow the fluid to flow in contrast to the above-described filtering action.

3, the controller controls the first three-way valve 400 and the second three-way valve 500 so that the filtered working fluid discharged from the first pump 200 flows into the filtration tank 100, Way valve 400 to be sprayed into the working liquid tank T.

At the same time, the controller causes the filtered working fluid supplied through the third three-way valve 600 to be pressure-fed through the bypass pipe 610 to the first pump 200 as shown in FIG. 3, So that the working fluid is jetted into the working fluid tank (T).

As described above, according to the present invention, since the filtered working fluid is injected through the suction pipe installed in the deeper part of the working fluid tank to discharge the working fluid to be filtrated, the working fluid tank can be cleaned .

A tank filtration apparatus having a cleaning function according to [Embodiment 2] of the present invention comprises a filtration tank 10 for filtering and storing a working liquid, a filter 21 as shown in Fig. 4 and Fig. 5 A vacuum pump 20 for filtering the working fluid sucked in vacuum from the working fluid tank T and a pump 30 for returning the filtered working fluid back to the working fluid tank T, A three-way valve 40 for determining the fluid flow in accordance with the driving of the pump 30, and a controller.

Particularly, as shown in Fig. 4, the controller causes the working fluid to be filtered in the working fluid tank T by using the vacuum pressure generated by operating the vacuum pump 20 when filtering the working fluid. At this time, the three-way valve 40 opens to allow the working fluid to flow from the working fluid tank T to the vacuum pump 20 without flowing the working fluid to be filtered to the pump 30 side. Thus, the working liquid pumped by the vacuum pump 20 is filtered through the filter 21 and stored in the filtration tank 10.

On the other hand, as shown in Fig. 5, the controller controls to clean and spray the working liquid stored by filtration as described above. This causes only the pump 30 to be driven, and the filtered working fluid is pressure-fed by the three-way valve 40. At this time, the three-way valve 40 performs a cleaning function by forming a flow path so that the filtered working fluid can be ejected into the working fluid tank T.

As described above, the present invention can be configured to perform the cleaning function in addition to the filtering function with a simple structure.

100: Filtration tank
110: filter
200: first pump
300: Second pump
400: first three-way valve
500: second three-way valve
510: Bypass tube

Claims

A filtration tank (100) having a filter (110) for storing the filtered working fluid;
A first pump (200) for supplying a working fluid in a working fluid tank (T) to the filter (110) and filtering the fluid;
A second pump 300 for feeding the filtered working fluid stored in the filtration tank 100 to the working fluid tank T;
A first three-way valve (400) connected to an inlet side of the first pump (200);
A second three-way valve (500) connected to the outlet side of the first pump (200) and connected to the first three-way valve (400) by a bypass pipe (510);
A third three-way valve 600 connected to the outlet side of the second pump 300 and connected by the bypass pipe 610 between the first pump 200 and the first three-way valve 400; And
And a controller for controlling the first and second pumps (200, 300) and the first to third three-way valves (400, 500, 600).

The method according to claim 1,
The controller, when filtering the working fluid in the working fluid tank (T)
The working fluid to be filtered which is sucked through the first three-way valve 400 is supplied to the filter 110 through the first pump 200 without passing through the bypass pipe 510,
And simultaneously controls the filtered working fluid to be supplied to the working fluid tank (T) without passing through the bypass pipe (610) through the second pump (300).

The method according to claim 1,
The controller, when cleaning the working liquid tank T,
The working fluid filtered through the second pump 300 is supplied to the first pump 200 through the bypass pipe 610,
And simultaneously, the working fluid filtered through the bypass pipe (510) is injected into the working fluid tank (T) through the first three-way valve (400).

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