KR20150053025A - Filter flushing apparatus and flushing method using the same - Google Patents

Abstract

The present invention relates to an apparatus for cleaning filter media and a cleaning method using the same. The apparatus for cleaning filter media comprises: an air supply unit supplying air at a preset air pressure so as to clean filter media to be cleaned; and a cleaning unit mounted with the filter media therein, and cleaning the filter media by using the air supplied from the air supply unit, thereby preventing the filter from being damaged and destroyed while the filter is cleaned by using the air, and reducing the time and the costs required for the cleaning operation as compared with the case of cleaning filter media by using pure water.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a filtration material washing apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a filter material cleaning apparatus and a cleaning method using the filter material, and more particularly, to a filter material cleaning apparatus and method using the filter material.

Generally, a filter is used for filtration of impurities contained in liquid or gaseous fluid or various contaminants harmful to human body, and is used in various fields such as daily life, factory, and workplace.

Recently, as a countermeasure against environmental pollution caused by various air pollutants harmful to human body including yellow dust, a wrinkle filter (hereinafter referred to as " W filter " Pleated filter is used.

For example, the following patent documents 1 and 2 disclose techniques relating to a filter bending device for manufacturing a wrinkle filter by bending a filter material.

On the other hand, in general, the wrinkle filter is inserted into the standardized filter case.

Therefore, the folding filter folded into multiple stages in the filter bending device is cut into a size corresponding to the inner space of the filter case.

That is, conventionally, a filter cutting device that cuts a filter cuts a filter material by vertically moving a cutting blade. In the cutting process, static electricity is generated by friction between the filter material and the cutter blade, and cutting chips, dust, So that the filter material is initially contaminated.

In particular, recently, the use of a fiber material as a filter material increases the amount of cutting debris generated during the cutting process.

The wrinkle filter is adhered to both ends so as to be mounted inside the cylindrical filter case.

Dust and foreign matter may be generated in the sealing step of adhering the both ends of the wrinkle filter to the inside of the cylindrical filter case.

Accordingly, the wrinkle filter must perform a cleaning operation before inserting it into the filter case to prevent static electricity generated by the filter material by removing cutting debris, dust, and foreign matter after the cutting operation and the sealing operation.

Korean Patent Registration No. 10-0966894 (issued on June 20, 2010) Korean Patent Registration No. 10-0742391 (issued on July 24, 2007)

However, according to the prior art, the cleaning operation of the wrinkle filter was performed by using deionized water, which is ion-free pure water.

As described above, according to the conventional cleaning method of the wrinkle filter using pure water, when the filter material having a hydrophobic property such as polyvinylidene difluoride (hereinafter, referred to as 'PVDF') is washed, There is a problem that the filter material may be damaged or damaged due to the resistance, and the possibility that the physical property of the material changes.

The prior art cleaning method of the wrinkle filter consumes about 2.5 tons of water in cleaning a large amount of water, for example, about 400 filter materials, in order to manufacture pure water and to clean the filter material, .

In the conventional cleaning method of the wrinkle filter according to the prior art, after the cleaning operation using pure water, each filter material is put into the dryer and dried at about 70 ° C for about 18 hours or more, There is a problem that it unnecessarily increases.

The cleaning method of the conventional wrinkle filter is used in a microfiltration process such as a semiconductor or multilayer ceramic capacitor manufacturing process or an oil refining process in a state where the filter material is not completely dried during a drying process , Which is a cause of increasing the defective product rate.

Further, in the conventional cleaning method of the wrinkle filter, when the drying operation does not proceed at a proper temperature in the drying operation, the structure of the filter material changes or the appearance is damaged.

An object of the present invention is to provide a filter material cleaning device and a cleaning method using the same that can prevent damage or breakage of a filter material generated during a cleaning operation by cleaning the filter material using air .

Another object of the present invention is to provide a filtration material cleaning device and a cleaning method using the filtration material cleaning device which can minimize the time and cost required for a cleaning operation by removing a drying operation in a filtration material washing process.

In order to accomplish the above object, the filter medium cleaning apparatus according to the present invention comprises an air supply unit for supplying air at a preset pressure to clean a filter medium to be cleaned, a filter medium mounted inside the filter medium, And a washing unit for washing the filter material by using the filter unit.

The present invention may be applied to a washing machine comprising a filtering unit for filtering foreign matter contained in air supplied to the washing unit, a pressure measuring unit for measuring a pressure of air supplied to the washing unit from the filtering unit, And a collecting section for collecting the collected particles.

The control unit controls the washing operation to be started or stopped according to the result of measuring the pressure of the air supplied from the air supply unit, the differential pressure between the pressure measured by the pressure measuring unit and the purity of the air collected by the collecting unit, And a control unit for checking whether the normal operation is performed.

Wherein the air supply unit includes a compressor for compressing air to generate compressed air and a pressure regulator for regulating the pressure of the compressed air, wherein the pressure regulator includes a filter unit connected to a rear end of the air supply unit due to compressed air supplied from the compressor The pressure of the compressed air is gradually increased so as to prevent damage, and is kept constant at a predetermined set pressure.

And the cleaning unit includes a plurality of filter media mounting portions in which a filter medium is mounted.

Wherein the pressure measuring unit includes a first pressure gauge for measuring a pressure of air supplied from the filtering unit to the washing unit and a second pressure gauge for measuring pressure of each filter material loading unit provided in the washing unit, 2 differential pressure of the pressure measured in the pressure gauge is calculated to check whether the fine filter medium provided in the filtering unit and the filter medium installed in each filter medium mounting unit of the cleaning unit are in a steady state.

Wherein the collecting unit includes a first collecting unit collecting a part of the air supplied to the washing unit through the filtering unit and a second collecting unit collecting a part of the air discharged after cleaning the filtering material in the washing unit, The purity of the air collected in the first and second collectors is checked using a counter and the filter is controlled to be washed or replaced when the purity of the air trapped in the first trapping device is lower than a preset reference purity, When the purity of the air pumped in the filter is lower than a preset reference purity, the washing operation of the filter medium is stopped.

According to another aspect of the present invention, there is provided a cleaning method using a filter material cleaning apparatus, comprising: (a) generating compressed air at a preset pressure using an air supply unit; and (b) And supplying the compressed air to clean the filter medium.

(C) filtering foreign substances contained in the compressed air using a filtering unit provided with a microfiltration material and supplying the filtered foreign substances to a washing unit equipped with a filter material; and (d) And checking whether the filtering unit and the cleaning unit are in a normal state.

Wherein the step (d) comprises the steps of: (d1) calculating a pressure difference between the air pressure supplied to the filtering unit and the air pressure supplied to the washing unit, and if the calculated differential pressure is out of a preset reference pressure range, (D2) calculating a differential pressure between the air pressure supplied to the washing unit and the air pressure discharged from the washing unit, and if the calculated differential pressure is out of a preset reference pressure range, And determining that the filter medium is in an abnormal state.

The method may further include the step of (e) collecting the air supplied to the washing unit and the air discharged from the cleaning unit, respectively, wherein the step (b) includes measuring the purity of the air collected in step (e) If the purity of the air supplied to the washing section is less than a preset reference purity, the washing or replacement of the filter medium starts, and if the purity of the air discharged from the washing section is lower than a preset reference purity, .

As described above, according to the filter material cleaning apparatus and the cleaning method using the filter material according to the present invention, it is possible to prevent damage and breakage of the filter material by washing the filter material using air, The time and cost required for the operation can be reduced.

According to the present invention, it is possible to prevent the filter medium from being deformed by changing the physical properties of the filter medium or incompletely drying the filter medium during the cleaning operation using pure water without using a chemical reaction using air.

Thus, according to the present invention, it is possible to obtain an effect that the filter material is precisely cleaned to prevent static electricity generated by cutting chips, dust and foreign matter in the filtration process, and to improve filtration performance of the filter material.

Further, according to the present invention, it is possible to reduce the defective rate of the final product produced through the filtration process using the filter material.

FIG. 1 is a block diagram of a filter material cleaning apparatus according to a preferred embodiment of the present invention. FIG.
FIG. 2 is a perspective view of the filter material cleaning apparatus shown in FIG. 1,
3 is a process diagram for explaining a cleaning method using a filter material cleaning apparatus according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A filter medium washing device and a washing method using the same according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a filter material washing apparatus according to a preferred embodiment of the present invention, and FIG. 2 is a perspective view of the filter material washing apparatus shown in FIG.

As shown in FIG. 1, the filtration material cleaning apparatus according to the preferred embodiment of the present invention includes an air supply unit 10 for supplying air at a predetermined pressure for cleaning the filter medium, a filter medium 10 mounted inside the air supply unit 10, And a washing unit 20 for washing the filter material using the air supplied from the washing unit 20.

The filtration material cleaning apparatus according to the preferred embodiment of the present invention includes a filtering unit 30 for filtering foreign substances contained in air supplied to the cleaning unit 20, a filter 30 for filtering foreign substances contained in the air supplied to the cleaning unit 20 from the filtering unit 30, And a collecting part 50 for collecting the air discharged from the cleaning part 20 and the pressure measuring part 40 for measuring the pressure of the washing part 20, respectively.

In addition, the filtration material cleaning apparatus according to the preferred embodiment of the present invention is characterized in that the pressure of the air supplied from the air supply unit 10, the pressure difference between the pressure measured by the pressure measurement unit 40 and the pressure of the air collected by the collection unit 50 The control unit 60 may control the start or stop of the washing operation according to the result of measuring the purity and check whether the filtering operation is normal or not.

2, the air supplying unit 10, the filtering unit 30, and the washing unit 20 are sequentially connected through a connecting pipe, and the pressure measuring unit 40 and the collecting unit 50 are connected to each other through a connecting pipe As shown in FIG.

The air supply unit 10 may include a compressor 11 for compressing air to generate compressed air as shown in Figs. 1 and 2, and a regulator 12 for regulating the pressure of the compressed air .

The pressure regulator 12 gradually increases the pressure of the compressed air to prevent damage to the filtering unit 30 connected to the rear end of the air supply unit 10 due to the compressed air supplied from the compressor 11, It maintains constant function.

For example, the set pressure may be set to about 2 to 2.5 bar.

The filtering unit 30 is provided between the air supply unit 10 and the cleaning unit 20 and functions to filter foreign substances contained in the air supplied to the cleaning unit 20. [

To this end, the filtering section 30 may comprise a microfiber material having a higher filtration performance than the product to be cleaned, or a microfiltration material such as a PVDF nanofiber material.

A first pressure gauge 41 for measuring the pressure of the air filtered by the filtering unit 30 and supplied to the washing unit 20 and a second pressure gauge 41 for collecting a part of the air supplied to the washing unit 20, The first collecting device 51 may be installed.

The cleaning part 20 may include a filter material mounting part 21 formed in a cylindrical shape corresponding to the filter casing so that the filter material is installed therein.

A plurality of filter medium mounting portions 21 may be installed in parallel to clean a plurality of filter media at the same time.

Here, the filter material may be applied to an actual filter casing to receive air in the same or opposite direction as the filtration operation.

That is, the cleaning unit 20 supplies the compressed air in the same direction as the filtration operation to clean the filter medium, or supplies the compressed air in the opposite direction to the filtration operation, thereby performing the back washing operation of the filter medium using the air, Such as cutting chips, foreign matter, and dust adhered to the substrate.

Each filter medium mounting portion 21 may be provided with a second pressure gauge 42 for measuring the pressure of the air discharged after cleaning the filter medium.

The first and second pressure gauges 41 and 42 constitute a pressure measurement unit 40. The control unit 60 controls the pressure of the pressure regulator 12 and the pressure measured by the first pressure gauge 41, The differential pressure can be calculated to check whether the precision filter medium provided in the filtering unit 30 is in a steady state.

The control unit 60 can check whether the filter medium mounted on each filter medium mounting unit 21 is in a normal state by calculating the differential pressure between the pressures measured by the first and second pressure gauges 41 and 42.

The collecting part 50 includes a first collecting device 51 for collecting a part of the air supplied to the washing part 20 through the filtering part 30 and a second collecting part 51 for collecting a part of the air discharged after washing the filtering material in the washing part 20 And a second collecting device 52 for collecting the collected particles.

Accordingly, the controller 60 checks the purity of the air trapped by the first trapper 51 using an air particle counter (not shown), and if the purity is lower than a preset reference purity, To be replaced.

For example, when the average pore size of the micro filter provided in the filtering unit 30 is about 0.5 탆, the reference purity may be set to be 10 particles included in the collected air.

The control unit 60 may check the purity of the air trapped in the second trap 52 and stop the cleaning operation of the filter medium if the purity is lower than a preset reference purity.

First and second valves 53 and 54 may be installed at the front ends of the first and second collectors 51 and 52 to open or close the air to supply or block air to the first and second collectors, respectively.

The first and second valves 53 and 54 may be manually opened or closed manually by an operator or may be provided as an electronic opening and closing valve that is opened or closed in response to a control signal from the controller 60.

To this end, the control unit 60 opens the first and second valves 53 and 54 to collect air, and controls the first and second valves 53 and 54 to close when the collection is completed Signal.

The control unit 60 calculates the differential pressure of the pressure measured by the pressure measuring unit 40 and compares the differential pressure with a predetermined reference pressure range. If the comparison result indicates that the reference pressure range is exceeded, the filtering unit 30 and the cleaning unit 20 It is determined that an abnormality has occurred in the compressor 11, so that the compressor 11 can be stopped to generate a control signal to terminate the cleaning operation.

Next, referring to FIG. 3, a cleaning method using a filter material cleaning apparatus according to a preferred embodiment of the present invention will be described in detail.

FIG. 3 is a process diagram illustrating the cleaning method using the filter material cleaning apparatus according to the preferred embodiment of the present invention.

As shown in FIG. 3, the cleaning method using the filter material cleaning apparatus according to the preferred embodiment of the present invention starts by generating compressed air by driving the compressor 11 provided in the air supply unit 10 (S10).

At this time, the pressure regulator 12 gradually increases the pressure so that excessive compressed air is not directly supplied to the filtering unit 30 during the initial operation of the compressor 11. [

Then, the pressure regulator 12 adjusts the compressed air to a predetermined set pressure, for example, about 2 to 2.5 bar, and keeps it constant (S12).

Next, the filtering unit 30 filters the foreign substances contained in the compressed air (S14), and the filtered air is collected in the first collector 51 when the first valve 53 is opened (S16).

The control unit 60 measures the purity of the air trapped in the trapping unit in the first trapping unit 51 by using the air particle counter. When the measured purity is equal to or lower than a preset reference purity, So that the filter material mounted on each filter material mounting portion 21 is cleaned (S18).

At this time, the first pressure gauge 41 measures the pressure of the compressed air supplied from the filtering unit 30, and the control unit 60 measures the pressure of the compressed air supplied from the pressure regulator 12 and the pressure measured by the first pressure gauge 41 And calculates the differential pressure to determine whether the filtering unit 30 is in a normal state.

The second pressure gauge 42 measures the pressure of each filter material mounting portion 21 and the controller 60 calculates the differential pressure of the pressure measured by the first pressure gauge 41 and the second pressure gauge 42, (21).

If the calculated differential pressure deviates from a preset reference pressure range, the control unit 60 controls to stop the cleaning operation.

On the other hand, the second collecting section 52 collects the air exhausted from each filter material mounting section 21 when the second valve 54 is opened (S20), and the control section 60 controls the second collecting section 52 The purity of the collected air is measured, and if the measured purity is lower than a preset reference purity, the cleaning operation can be stopped (S22).

Through the process as described above, the present invention can prevent damage and breakage of the filter material by washing the filter material using air, and reduce the time and cost required for the cleaning operation compared with the case of using the pure water to clean the filter material can do.

Although the invention made by the present inventors has been described concretely with reference to the above embodiments, the present invention is not limited to the above embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

The present invention relates to a filtration material cleaning device and a cleaning method for reducing damage and breakage of a filtration material by using air to reduce the damage and breakage of the filtration material, .

10: air supply unit 11: compressor
12: pressure regulator 20:
21: filter medium mounting part 30: filtering part
40: pressure measuring part 41: first pressure gauge
42: second pressure gauge 50: collecting part
51: first collector 52: second collector
53: first valve 54: second valve
60:

Claims (11)

An air supply unit for supplying air at a predetermined pressure to clean the filter medium to be cleaned, and
And a cleaning unit for cleaning the filter medium using air supplied from the air supply unit. The method according to claim 1,
A filtering unit for filtering the foreign substances contained in the air supplied to the cleaning unit,
A pressure measuring unit for measuring a pressure of air supplied from the filtering unit to the washing unit,
Further comprising a collecting unit collecting the air discharged from the filtering unit and the cleaning unit, respectively. 3. The method of claim 2,
The control unit controls the washing operation to be started or stopped according to the result of measuring the pressure of the air supplied from the air supply unit, the differential pressure between the pressure measured by the pressure measuring unit and the purity of the air collected by the collecting unit, Further comprising a control unit for checking whether the filter unit is operating normally. The method of claim 3,
The air supply unit includes a compressor for compressing air to generate compressed air,
And a pressure regulator for regulating the pressure of the compressed air,
Wherein the pressure regulator gradually increases the pressure of the compressed air so as to prevent damage to the filtering unit connected to the rear end of the air supply unit due to the compressed air supplied from the compressor, Device. 5. The method of claim 4,
Wherein the cleaning unit includes a plurality of filter media mounting portions in which a filter medium is mounted. The apparatus as claimed in claim 3, wherein the pressure measuring unit
A first pressure gauge for measuring the pressure of air supplied from the filtering unit to the washing unit,
And a second pressure gauge for measuring the pressure of each filter medium mounting portion provided in the cleaning portion,
Wherein the control unit calculates the differential pressure of the pressure measured in the first and second pressure gauges and checks whether the microfluidic material provided in the filtering unit and the filter material mounted in the respective filter material mounting units of the cleaning unit are in a steady state. Device. The method of claim 3,
The collecting unit includes a first collecting unit for collecting a part of the air supplied to the washing unit through the filtering unit,
And a second collecting unit for collecting a part of the discharged air after washing the filter material in the washing unit,
The control unit checks the purity of the air trapped in the first and second trappers by using an air particle counter and controls the filter member to be cleaned or replaced when the purity of the air trapped in the first trapper is lower than a preset reference purity ,
Wherein the controller controls to stop the washing operation of the filter medium when the purity of the air collected in the second collector is lower than a preset reference purity. (a) generating compressed air at a predetermined pressure using an air supply unit and
(b) supplying the compressed air to the filter medium to be cleaned to clean the filter medium. 9. The method of claim 8,
(c) filtering the foreign substances contained in the compressed air by using a filtering unit provided with a microfiltration material and supplying the foreign substances to the washing unit equipped with the filtering material; and
(d) measuring the pressure of the air supplied to the washing unit and the pressure of the air discharged from the washing unit, and checking whether the filtering unit and the washing unit are in a normal state or not. Way. 10. The method of claim 9, wherein step (d)
(d1) calculating a pressure difference between the air pressure supplied to the filtering unit and the air pressure supplied to the washing unit, and determining the abnormal state of the fine filter medium provided in the filtering unit if the calculated differential pressure deviates from a preset reference pressure range And
(d2) a pressure difference between the air pressure supplied to the washing unit and the air pressure discharged from the washing unit is calculated, and if the calculated differential pressure deviates from a predetermined reference pressure range, it is judged to be an abnormal condition of the filter member mounted on the washing unit The cleaning method of claim 1, further comprising: 11. The method according to any one of claims 8 to 10,
(e) collecting the air supplied to the washing unit and the air discharged from the washing unit, respectively,
In the step (b), if the purity of air collected in the step (e) is measured and the purity of the air supplied to the washing unit is lower than a preset reference purity, washing or replacement of the filtering medium starts,
Wherein the cleaning operation of the filter medium is terminated when the purity of air discharged from the cleaning unit is less than a preset reference purity.

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