KR20210140966A - Water filter - Google Patents

Abstract

Disclosed is a water filter to maximize an area for filtering water. According to the present invention, the water filter comprises: a first case including a first pipe connection part to which a pipe is connected and an expanded pipe part extending from the first pipe connection part and forming an inlet through which water is introduced; a second case connected to the expanded pipe part and having a space formed therein; a third case including a reduced pipe part coupled to the second case, having a second pipe connection part formed in the reduced pipe part connected to a second pipe spaced apart from a first pipe, and forming an outlet (170) through which the water is discharged; an outer filter accommodated in a space and having a hollow shape; a water guide coupled to the outer filter and spaced apart from the expanded pipe part to guide the water to the outside of the outer filter and including one side facing the inlet and the other side facing the inner side of the outer filter; and an inner filter including one end accommodated inside the outer filter to face the water guide and the other end facing the outlet.

Description

water filter {WATER FILTER}

The present disclosure relates to a water filter for purifying water.

Hydroponic facilities generally refer to facilities made using spring water, such as fountains, lakes, artificial waterfalls, or byeokcheons, ecological ponds, and reservoirs.

As these hydroponic facilities were installed, there was a problem in that the water used in the hydroponic facilities was contaminated. The water filter filters water containing various foreign substances so that it can be reused and can be used in various forms.

An example of purifying water by purifying water by sucking water from a pond, lake, dam, reservoir, etc. may have an appeal purification apparatus disclosed in Republic of Korea Patent Publication No. 10-1868526 (announcement on July 19, 2018) and , These appeal purification devices include a microfilter, activated carbon filter, sand filter, nano filter, hollow fiber membrane filter, reverse osmosis filter, water softener, activated carbon filter, etc. to filter the particles contained in water to generate treated water. Thus, by sucking the water from the appeal, removing the particles contained in the water, it is possible to oxidatively decompose the pollutants (eg, organic matter, toxic substances, etc.) contained in the water.

Republic of Korea Patent Publication No. 10-1868526 (published on July 19, 2018)

The present embodiment is to provide a water filter that can maximize the water purification area, has a high water purification ability, and can be compact.

In an embodiment of the present disclosure, a first case having a first pipe connection part to which a first pipe is connected, an expansion pipe extending from the first pipe connection part and forming an inlet through which water flows, and the expansion pipe part are connected A second case having a space formed therein and a shaft pipe portion coupled to the second case are formed, a second pipe connection portion formed in the shaft pipe portion and connected to a second pipe spaced apart from the first pipe is formed, and water is discharged A third case forming an outlet to be formed and an outer filter accommodated in the space and having a hollow shape, coupled to the outer filter and spaced apart from the expansion pipe part, guides water to the outside of the outer filter, and one side faces the inlet when riding The water filter may include a water filter including a water guide facing the inner side of the outer filter and an inner filter with one end facing the water guide and the other end facing the outlet.

In addition, one surface of the water guide may include a water filter convex toward the inlet.

In addition, the water guide may include a water filter further comprising a filter coupling portion coupled to the outer filter.

The through hole of the inner filter may include a smaller water vapor than the through hole of the outer filter.

Each of the outer filter and the inner filter may include a water filter facing the shaft tube portion.

In an embodiment of the present invention, the water guide may include an outer guide to which the outer filter is coupled, and an inner guide to which the outer connector protrudes from the outer guide and is disposed between the first case and the second case and the inner filter is coupled. have.

The water guide may further include an inner connector connecting the outer guide and the inner guide.

The water filter may include a water filter including a filter sheet disposed between the second case and the third case, a first fitting portion on which the outer filter is seated, and a second fitting portion on which the inner filter is seated. have. One surface of the filter sheet includes an outer shielding wall disposed between the second case and the third case;

The water filter may further include an inner shielding wall formed between the first fitting portion and the second fitting portion, and a hollow portion through which water discharged from the inner filter passes.

In addition, an inlet valve connected to the first pipe and an inlet pipe connected to the inlet valve 310, A first bypass pipe connected to the inlet pipe, a bypass valve connected to the first bypass pipe, a second bypass pipe connected to the bypass valve and the second pipe, respectively, and an outlet valve 260 connected to the second pipe ), including a water filter.

In addition, a drain pipe protrudes from the first pipe, a drain valve is connected to the drain pipe, and when the inlet valve and the outlet valve are open, the bypass valve and the drain valve are closed, and the inlet valve and the outlet When the valve is closed, the bypass valve and the drain valve may include a water filter that is opened.

In addition, in another embodiment of the present invention, the water filter has a first pipe connection part to which the first pipe is connected, and an expanded pipe part extended from the first pipe connection part, and forms an inlet through which water is introduced. and a second case connected to the expansion pipe, a space is formed therein, and an opening, a see-through window 1252' disposed in the opening, and a shaft pipe coupled to the second case are formed, the shaft pipe is formed in the shaft pipe, the first pipe A second pipe connection part connected to the spaced second pipe is formed, and the outer filter and the outer filter having a hollow shape and accommodated in a third case and space forming an outlet through which water is discharged are coupled to the outer filter and spaced apart from the expansion pipe part A water guide that guides water to the outside of the outer filter, one side faces the inlet and the other side faces inside the outer filter, and an inner filter that is accommodated inside the outer filter and has one end facing the water guide and the other end facing the outlet. can

In addition, the water guide includes an outer guide to which the outer filter is coupled,

and an outer connector protruding from the outer guide and disposed between the first case and the second case, an inner guide to which the inner filter is coupled, and an inner connector connecting the outer guide and the inner guide.

In addition, the water filter may include a filter sheet disposed between the second case and the third case, a first fitting part on which the outer filter is seated is formed, and a second fitting part on which the inner filter is seated.

The water filter has an inlet valve connected to the first pipe and an inlet pipe connected to the inlet valve and

It may include a first bypass pipe connected to the inlet pipe, a bypass valve and a bypass valve connected to the first bypass pipe, and a second bypass pipe connected to the second pipe and an outlet valve connected to the second pipe, respectively.

In the water filter of the present invention, since the water passing through the first case having the expanded pipe portion extended from the first pipe connection part passes through the water guide, the area for filtering the water can be maximized.

In the water filter of the present invention, since one surface of the water guide is convex toward the inlet through which the water flows, it is possible to easily guide the water flowing in through the inlet.

The water filter of the present invention may include a filter coupling part to which the water guide and the outer filter are coupled, thereby preventing damage to the outer filter from the water flowing in from the first case.

In the water filter of the present invention, since the through hole of the inner filter is smaller than that of the outer filter, compact filtering can be performed during the water purification process and the filter can be effectively cleaned during the backwashing process.

The water filter of the present invention may provide a fitting portion in which the inner filter and the outer filter are seated, so that the filters may be seated without shaking.

The water filter of the present invention includes an outer shielding wall disposed between the second case and the third case and an inner shielding wall between the first fitting part and the second fitting part, so that all the water flowing in from the first case is an outer filter and By allowing it to pass through an inner filter, effective water purification can be performed.

1 is a view showing a water system having a water filter according to an embodiment of the present invention;
2 is a plan view showing a water filter according to an embodiment of the present invention;
3 is a cross-sectional view showing a water filter according to an embodiment of the present invention;
Figure 4 is a side view showing the inside of the water guide of the present invention,
5 is a cross-sectional view of a filter sheet according to an embodiment of the present invention;
6 is a plan view showing a water filter of another embodiment of the present invention;
7 is a cross-sectional view taken along line A-A' shown in FIG. 6;
8 is a plan view showing a water filter according to another embodiment of the present invention.

Hereinafter, the detail of this invention is demonstrated.

The embodiments described below are only examples of the present invention, and the present invention may be modified in various forms. Accordingly, the specific features and functions disclosed below do not limit the scope of the claims.

1 is a view showing a water system having a water filter according to an embodiment of the present invention.

The water system shown in FIG. 1 may include a pump 13 and a water filter 14 . The pump 13 and the water filter 14 may be accommodated in the housing 15, and the pump 13, the water filter 14, and the housing 15 function as a water treatment module installed submerged in the water W. can

The pump 13 may pump water W to the water filter 14, and the water pumped to the water filter 14 may be purified while passing through the water filter 14, and in the water filter 14 Purified water may be discharged.

The water system may include a controller 11 that controls the water filter 14 , and the controller 11 may control the pump 13 and the water filter 14 .

A wire 12 may be connected to the controller 11 , and the wire 12 may transmit electrical signals for controlling the pump 13 and the water filter 14 .

Meanwhile, the water system may include a sewage pipe 16 through which water for backwashing of the water filter 14 of the water filter 14 passes.

In order to control the water filter 14, the controller 11 transmits a control signal to the pump 13 and the water filter 14 through the wire 12, and the water filter 14 receives the purified water based on the control command. Alternatively, the valves included in the water filter 14 may be controlled by performing a washing process.

Specifically, the controller 11 opens the inlet valve 310 (refer to FIG. 2) and the outlet valve 320 (refer to FIG. 2) of the water filter 14 for water purification, and includes a bypass valve 300 (refer to FIG. 2) and A drain valve 340 (see FIG. 2 ) may provide a control signal to the water filter 14 to close.

In addition, the controller 11 controls the bypass valve 330 and the drain valve 340 when the inlet valve 310 and the outlet valve 320 of the water filter 14 are closed for cleaning the water filter 14 . A control signal may be provided to the water filter 14 that causes the water to open.

Hereinafter, the water filter 14 will be described in detail.

2 is a plan view showing a water filter according to an embodiment of the present invention.

Referring to FIG. 2 , the water filter 14 may be connected to each of the first pipe 210 and the second pipe 250 between the first pipe 210 and the second pipe 250 spaced apart from each other.

The water passing through the first pipe 210 may be purified while passing through the water filter 14 , and the water purified by the water filter 14 may be discharged through the second pipe 250 .

The water filter 14 may be elongated in a direction in which the first pipe 210 and the second pipe 250 are spaced apart.

The water filter 14 includes an inlet valve 310 connected to the first pipe 210 and an inlet pipe 220 connected to the inlet valve 310, A first bypass pipe 230 connected to the inlet pipe 220, and The bypass valve 330 connected to the first bypass pipe 230 and It may include a second bypass pipe 240 connected to the bypass valve 330 and the second pipe 250 , respectively, and an outlet valve 260 connected to the second pipe 250 .

A drain pipe 2101 may protrude from the first pipe 210 , and a drain valve 340 may be connected to the drain pipe 2101 .

The inlet valve 310 , the outlet valve 320 , the bypass valve 330 and the drain valve 340 provided in the water filter 14 performs the control command received from the controller 11 by the water filter 14 . In order to do this, it is preferable to use a solenoid valve in which a solenoid and at least one orifice are combined.

The water filter 14 may include a case through which water passes. The case may be composed of a combination of a plurality of members.

The water filter 14 may include a first case 110 , a second case 120 , and a third case 130 .

The first case 110 has a first pipe connection part 1102 to which the first pipe 210 is connected, and an expanded pipe part 1101 extended from the first pipe connection part 1102, and has an inlet 160 through which water is introduced. ) can be formed.

The expansion tube 1101 may be defined as a portion in which the cross-sectional area is gradually increased in the flow direction of the water.

The first case 110 may serve as a guide for transferring water flowing in from the first pipe 210 to the second case 120 .

The second case 120 may be connected to the expansion tube 1101 and a space 1201 may be formed therein. The second case 120 may serve to guide the water that has passed through the first case 110 to the outer filter 121 to be described later, and has a function of protecting the outer filter 121 and the inner filter 122 . can do.

A space 1201 may be formed inside the second case 120 , and an outer filter 121 and an inner filter 122 for filtering the water passing through the first case 110 are provided in the space 1201 . can be placed.

The water filter 14 may further include a water guide 140 disposed between the first case 110 and the second case 120 . The third case 130 may be coupled to the second case 120 . The third case 130 has a shaft pipe portion 1301 coupled to the second case 120 , formed by being connected to the shaft pipe portion 1301 and connected to a second pipe 250 spaced apart from the first pipe 210 . A second pipe connection portion 1302 and an outlet 170 through which water is discharged may be formed.

The shaft portion 1301 may be defined as a portion in which a cross-sectional area is reduced in the direction of the water flow.

The third case 130 may serve as a guide to collect the filtered water in the second case 120 and deliver it to the second pipe 250 , and the size of the shaft part 1301 of the third case 130 . is formed to match the size of the second pipe 250 to adjust the pressure of the filtered water flowing in from the second case 120 . The water whose pressure is adjusted by the shaft portion 1301 of the third case 130 may be delivered to the second pipe 250 .

The water filter 14 has an expanded pipe portion 1101 extended from the first pipe connection part 1102 of the first case 110 , and the expanded pipe part 1101 is connected to the second case 120 , so the second case The inner diameter of 120 may be greater than the diameter of the inlet 160 of the first case 110 .

Since the third case 130 has a reduced shaft portion 1301 in the filter sheet connection portion 1303 connected to the second case 120 , the inner diameter of the second case 120 is the outlet of the third case 130 . It may be larger than the diameter of 170 .

3 is a cross-sectional view showing a water filter according to an embodiment of the present invention.

Referring to FIG. 3 , the first case 110 may include a second case connection part 1103 extending from the expansion tube part 1101 and connected to the second case 120 . In addition, the second case 110 may include a first case connection part 1202 connected to the second case connection part 1103 of the first case 110 .

The water filter may further include a water guide 140 disposed between the first case 110 and the second case 120 .

Specifically, one surface of the water guide 140 is in contact with the second case connection part 1103 of the first case 110 , and the other surface of the water guide 140 is the first case connection part 1202 of the second case 120 . can be in contact with

According to an embodiment of the present invention, a space 1201 may be formed inside the second case 120 , and an outer filter 121 having a hollow shape may be disposed in the space 1201 .

Here, the hollow refers to an empty space area, and may be expressed by replacing it with a hole, a void, etc. depending on the application example.

The outer filter 121 is a filter member that filters the water flowing into the second case 120 through the expansion tube 1101 of the first case 110 , and filters contaminants on the hollow surface of the outer filter 121 . A plurality of through-holes may be formed for this.

The water filter 14 may further include an inner filter 122 accommodated inside the outer filter 121 .

One end 1221 of the inner filter 122 may face the water guide 140 , and the other end 1222 of the inner filter 122 may face the outlet 170 .

The inner filter 122 is a filter member for secondarily filtering the firstly filtered water while passing through the outer filter 121, and the inner filter 122 may have a plurality of through holes for filtering contaminants. .

In this case, the inner filter 122 may be formed in a hollow shape like the outer filter 121 or may be formed in a column shape.

A plurality of through holes for filtering contaminants may be formed in the inner filter 122 .

Each of the outer filter 121 and the inner filter 122 may face the shaft portion 1301 .

On the other hand, the inner filter 122 secondary filters the water primarily filtered by the outer filter 121. At this time, the contaminants contained in the water primarily filtered by the outer filter 121 are removed from the outer filter ( 121) may have a particle size smaller than the pore size.

In order for the inner filter 122 to secondarily filter the firstly filtered water, it is preferable that the through hole of the inner filter 122 is smaller than the through hole of the outer filter 121 .

The water filter 14 may include a water guide 140 coupled to the outer filter 121 .

The water guide 140 may be spaced apart from the expansion tube 1101 to guide water to the outside of the outer filter 121 . One surface 145 of the water guide 140 may face the inlet 160 , and the other surface 146 of the water guide 140 may face the inner side of the outer filter 121 .

The water guide 140 may guide the water flowing into the first case 110 from the first pipe 210 between the inner circumference of the second case 120 and the outer circumference of the outer filter 121 .

The water guide 140 may prevent water from flowing directly toward the inner filter 122 .

The water guide 140 may serve as a guide for maximizing a contact area between the water introduced into the second case 120 and the outer filter 121 .

On the other hand, when the water guide 140 guides the water flowing into the first case 110 to the second case 120, in order to minimize the pressure applied to the water guide 140 due to the water, the One surface 145 is preferably convex toward the inlet 160 .

In addition, the water guide 140 of the water filter 14 may further include a filter coupling part 143 coupled to the outer filter 121 . Also, the filter coupling unit 143 may be coupled to the inner filter 122 .

A detailed configuration of the water guide 140 will be described with reference to FIGS. 3 and 4 .

Figure 4 shows a side view showing the inside of the water guide of the present invention.

3 and 4 , the water guide 140 includes an outer guide 141 to which the outer filter 121 is coupled, and the first case 110 and the second case 120 protruding from the outer guide 141 . ) may include an outer connector 144 disposed between.

In addition, the water guide 140 may include an inner guide 142 coupled to the inner filter 122 . Hereinafter, the configuration of the water guide 140 will be described in detail.

The outer connector 144 may be disposed between the first case 110 and the second case 120 to connect the first case 110 and the second case 120 . One surface of the outer connector 144 may be in contact with the first case 110 , and the other surface of the outer connector 144 may be in contact with the second case.

A portion of the inner circumferential surface of the outer connector 144 may protrude toward the outer guide 141 to support the outer guide 141 .

A guide space S1 through which water may be introduced may be formed between the inner circumferential surface of the outer connector 144 and the outer circumferential surface of the outer guide 141 . The guide space S1 may be a passage for the water introduced from the first case 110 to flow into the second case 120 .

In order for the water flowing from the first case 110 to flow to the second case 120 without leakage, the diameter D1 of the inner circumferential surface of the outer connector 144 is the diameter D2 of the outer circumferential surface of the outer guide 141 . ), and the diameter D1 of the inner circumferential surface of the outer connector 144 is preferably less than or equal to the diameter of the inner circumferential surface of the second case connection part 1103 .

The outer guide 141 has a convex shape in the inlet 160 direction, and its cross-sectional area may decrease in the inlet 160 direction. The outer surface 145 of the outer guide 141 may be one surface 145 of the water guide 140 mentioned above, and the outer surface 145 of the outer guide 141 may guide the water flowing in through the inlet 160 . can

The inner surface of the outer guide 141 may be coupled to the outer filter 121 by welding.

The water guide 140 may include an inner guide 142 coupled to the inner filter 122 . The inner guide 142 may serve as a guide to prevent the water passing through the outer filter 121 from flowing to the third case 130 without passing through the inner filter 122 .

The inner guide 142 may have a convex shape with a cross-sectional area decreasing in the inlet 160 direction. The other surface 146 of the water guide 140 may be the inner surface of the inner guide 142 , and the inner guide 142 may be coupled to the inner filter 122 by welding.

The water guide 140 may further include an inner connector 143 connecting the outer guide 141 and the inner guide 142 .

The inner connector 143 may be a member for preventing the inner guide 142 coupled to one end of the inner filter 122 from sagging in a predetermined direction.

The inner connector 143 may support the outer guide 141 and the inner guide 142 .

On the other hand, the water guide 140 can support the inner guide 142 by the outer filter when the outer circumference of the inner guide 142 comes into contact with the inner circumference of the outer filter 121 , so without the inner connector 143 . It is also possible that the water guide 140 is configured.

Hereinafter, the rest of the configuration of the water filter 14 in FIG. 3 will be described.

In an embodiment of the present invention, the second case 120 of the water filter 14 may include a third case connection unit 1203 for coupling with the third case 130 . The third case 130 may include a filter sheet connecting portion 1303 for coupling with the third case connecting portion 1203 of the second case 120 .

The water filter 14 may further include a filter sheet 150 disposed between the second case 120 and the third case 130 . The filter sheet 150 may connect the second case 120 and the third case 130 , and support the outer filter 121 and the inner filter 122 accommodated in the second case 120 space 1201 . can

The filter sheet 150 is connected to the third case connection part 1203 of the second case 120, and the filter sheet 150 is connected to the filter sheet connection part 1303 of the third case 130, so the second case ( 120), the filter sheet 150 and the third case 130 may be combined. Hereinafter, the filter sheet 150 will be described in detail.

5 is a cross-sectional view of a filter sheet according to an embodiment of the present invention.

The filter sheet 150 may include a first fitting part 151 on which the outer filter 121 is seated in order to fix the outer filter 121 accommodated in the space 1201 of the second case 120 .

In addition, the filter sheet 150 may include a second fitting portion 152 on which the inner filter 122 is seated in order to fix the inner filter 122 accommodated in the space 1201 of the second case 120 .

One surface of the filter sheet 150 is formed between the outer shielding wall 153 disposed between the second case 120 and the third case 130 and the first fitting part 151 and the second fitting part 152 . An inner shielding wall 154 may be included.

At this time, the outer shielding wall 153 and the inner shielding wall 154 are connected to the third case 130 without the water flowing into the second case 120 passing through the outer filter 121 and the inner filter 122 . It can serve as a barrier to prevent inflow into the

In the filter sheet 150 of the water filter 14 , the water introduced into the second case 120 passes through the outer filter 121 , and the purified water passes through the inner filter 122 secondarily in the third case. It may further include a hollow part 155 to be introduced into the 130 .

Water discharged from the inner filter 122 may be introduced into the third case 130 through the hollow part 155 of the filter sheet 150 .

At this time, since water passing through the outer filter 121 and the inner filter 122 should flow into the hollow portion 155 of the filter sheet 150 , the size of the hollow portion 155 of the filter sheet 150 is determined by the size of the outer filter. It is preferably smaller than the size of the water guide 140 coupled to (121).

6 is a plan view showing a water filter according to another embodiment of the present invention.

And, FIG. 7 is a cross-sectional view taken along line A-A' shown in FIG. 6 .

5 and 6 , the second case 120 of the water filter 14 of the present invention may include an inner case 124 . The inner case 124 may be made of a transparent material, and the space 1201 may be formed therein.

The inner case 124 is preferably made of a transparent plastic material made of polyvinyl chloride (PVC).

The water filter 14 may further include an outer case 125 surrounding the outer periphery of the inner case 124 . The outer case 125 may be made of the same material as the first case 110 and the third case 130 . An opening 1251 may be formed at one side of the outer case 125 .

The inner case 124 and the outer case 125 of this embodiment may constitute the second case 120 of the embodiment of the present invention, and the second case 120 is disposed in the outer case 125 and has an opening 1251 . ) may further include a door 1252 for opening and closing.

In this case, the opening 1251 may be formed in the outer case 125 to observe the inside of the inner case 124 of the water filter 14 . Specifically, a space 1201 is formed inside the inner case 124 , and water may pass through the space 1201 .

The door 1252 may be disposed on the outer case 125 to protect the inner case 124 exposed to the opening 1251 . In addition, a hinge 1253 for rotatably fixing the door 1252 for opening and closing the opening 1251 is disposed on the outer circumferential surface of the outer case 125 , so that the user can use the door to access the inner space 1201 of the inner case 124 . ) can be observed. At this time, the outer case 125 is preferably made of a stainless (STS) material.

8 is a plan view showing a water filter according to another embodiment of the present invention.

The second case 120 ′ constituting the water filter 14 of this embodiment is connected to the expansion tube 1101 and a space 1201 may be formed therein, and a separate opening 1251 may be formed. .

The configuration of the second case 120' of this embodiment may be the same as that of the embodiment of the present invention, except that the opening 1251 is formed, and a detailed description thereof will be omitted to avoid overlapping description.

The water filter 14 of this embodiment may further include a see-through window 1252' disposed in the opening 1251 of the second case 120'.

The see-through window 1252' may be formed to be transparent or translucent, and the operator may check the inside of the second case 120' through the see-through window 1252' from the outside.

The operation of this embodiment will be described as follows.

The water system of the present disclosure may include a water purification mode and a washing mode. The water purification mode may refer to a process in which water supplied through the pump 13 passes through the water filter 14 and is purified. The washing mode is a common backwashing process, and may mean a draining process for removing contaminants attached to the outer filter and the inner filter according to the operation of the water purification mode.

Hereinafter, the water purification mode will be described first.

According to an embodiment of the water system of the present disclosure, the controller 11 may transmit a control signal for performing the water purification mode to the water filter 14 .

The water filter 14 is Upon receiving the control signal for the water purification mode from the controller 11 , the inlet valve 310 and the outlet valve 320 may be opened, and the bypass valve 330 and the drain valve 340 may be closed.

Thereafter, when water is supplied by the pump 13 , the water passes through the first pipe 210 and sequentially flows into the first case 110 and the second case 120 , and flows into the second case 120 . The used water may be sequentially filtered by the outer filter 121 and the inner filter 122 and then pass through the hollow part 155 of the filter sheet 150 . The water passing through the hollow part 155 may be discharged from the water filter 14 through the third case 130 and the second pipe 250 .

Hereinafter, the washing mode will be described.

According to an embodiment of the water system of the present disclosure, the controller 11 may transmit a control signal for performing the washing mode to the water filter 14 .

When the water filter 14 receives the control signal for the washing mode from the controller 11, it can close the inlet valve 310 and the outlet valve 320, and open the bypass valve 330 and the drain valve 340. have.

When water is supplied by the pump 13 , since the inlet valve 310 is closed, the water cannot enter the first pipe 210 from the inlet pipe 220 and flows into the first bypass pipe 230 .

The water flowing into the first bypass pipe 230 passes through the second bypass pipe 240 and flows into the second pipe 250 and the water flows into the third case 130 because the outlet valve 320 is locked. is introduced into

The water flowing into the third case 130 can remove contaminants from the inner filter 122 and the outer filter 121 while sequentially passing through the inner filter 122 and the outer filter 121, and remove the contaminants. It may be transported through the first pipe 210 .

Water containing contaminants may be introduced into the drain pipe 2101 formed by protruding from the first pipe 210 and finally discharged through the sewage pipe 16 .

210: first pipe 1102: first pipe connection part
1101: expansion tube 160: entrance
110: first case 120: second case
130: third case 1301: shaft part
250: second pipe 1302: second pipe connection part
170: outlet 121: outer filter
122: inner filter 140: water guide

Claims (15)

a first case having a first pipe connection part to which a first pipe is connected, and an expanded pipe part extending from the first pipe connection part and forming an inlet through which water is introduced;
a second case connected to the expansion tube and having a space therein;
a third case having a shaft portion coupled to the second case and formed in the shaft portion to form a second pipe connection portion connected to a second pipe spaced apart from the first pipe and forming an outlet through which water is discharged;
an outer filter accommodated in the space and having a hollow shape;
a water guide coupled to the outer filter and spaced apart from the expansion pipe to guide water to the outside of the outer filter, one side facing the inlet and the other side facing the inside of the outer filter;
and an inner filter accommodated inside the outer filter, one end facing the water guide and the other end facing the outlet. The method of claim 1,
One surface of the water guide is convex toward the inlet water filter. The method of claim 1,
The water guide further includes a filter coupling unit coupled to the outer filter. The method of claim 1,
The through hole of the inner filter is smaller than the through hole of the outer filter. The method of claim 1,
Each of the outer filter and the inner filter faces the axial pipe portion. 2. The method of claim 1
The water guide
an outer guide to which the outer filter is coupled;
an outer connector protruding from the outer guide and disposed between the first case and the second case; and
A water filter including an inner guide to which the inner filter is coupled. 7. The method of claim 6
The water guide
The water filter further comprising an inner connector (143) connecting the outer guide and the inner guide. 2. The method of claim 1
and a filter sheet disposed between the second case and the third case, a first fitting part on which the outer filter is seated, and a second fitting part on which the inner filter is seated. 9. The method of claim 8
One surface of the filter sheet includes an outer shielding wall disposed between the second case and the third case;
an inner shielding wall formed between the first fitting part and the second fitting part;
The water filter further comprising a hollow part through which the water discharged from the inner filter passes. The method of claim 1,
an inlet valve connected to the first pipe;
an inlet pipe connected to the inlet valve;
a first bypass pipe connected to the inlet pipe;
a bypass valve connected to the first bypass pipe;
a second bypass pipe connected to the bypass valve and the second pipe, respectively;
A water filter comprising an outlet valve connected to the second pipe. 11. The method of claim 10,
A drain pipe protrudes from the first pipe, and a drain valve is connected to the drain pipe,
When the inlet valve and the outlet valve are open, the bypass valve and the drain valve are closed,
When the inlet valve and the outlet valve are closed, the bypass valve and the drain valve are opened. a first case having a first pipe connection part to which a first pipe is connected, and an expanded pipe part extending from the first pipe connection part and forming an inlet through which water is introduced;
a second case connected to the expansion part and having a space therein and an opening therein;
a see-through window disposed in the opening;
a third case having a shaft portion coupled to the second case and formed in the shaft portion to form a second pipe connection portion connected to a second pipe spaced apart from the first pipe and forming an outlet through which water is discharged;
an outer filter accommodated in the space and having a hollow shape;
a water guide coupled to the outer filter and spaced apart from the expansion pipe to guide water to the outside of the outer filter, one side facing the inlet and the other side facing the inside of the outer filter;
and an inner filter accommodated inside the outer filter, one end facing the water guide and the other end facing the outlet. 13. The method of claim 12
The water guide
an outer guide to which the outer filter is coupled;
an outer connector protruding from the outer guide and disposed between the first case and the second case;
an inner guide to which the inner filter is coupled; and
A water filter including an inner connector connecting the outer guide and the inner guide. 13. The method of claim 12
and a filter sheet disposed between the second case and the third case, a first fitting part on which the outer filter is seated, and a second fitting part on which the inner filter is seated. 13. The method of claim 12
an inlet valve connected to the first pipe;
an inlet pipe connected to the inlet valve;
a first bypass pipe connected to the inlet pipe;
a bypass valve connected to the first bypass pipe;
a second bypass pipe connected to the bypass valve and the second pipe, respectively;
A water filter comprising an outlet valve connected to the second pipe.

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