KR101448049B1 - cover member interworking security water treatment apparatus - Google Patents

Abstract

Provided is a cover member interworking security water treatment apparatus in which raw water introduced when a filter is replaced is automatically blocked to easily replace the filter, and a plurality of purify filters for water-treating the raw water introduced from a raw water supply line to purify the water-treated raw water are disposed therein so that safety accidents due to leakage may be prevented to improve security of goods. The cover member interworking security water treatment apparatus includes: a case having an opening at one side thereof; a cover member covering the opening and selectively opened and closed, wherein a hook is disposed at one side of the cover member; a rotation knob on which a restrain tool member selectively hook-coupled to the hook by rotating to restrain the opening/closing operation of the cover is disposed; and a raw water blocking valve selectively blocking the raw water supply line according to the rotation of the rotation knob.

Description

[0001] The present invention relates to a cover member interworking security water treatment apparatus,

The present invention relates to a water treatment apparatus, and more particularly, to a water treatment apparatus that selectively filters raw water flowing when a filter is replaced and can easily replace a filter, prevents a safety accident caused by leakage of water, And a safety water treatment apparatus.

Generally, the water treatment apparatus is a device for purifying inflow water, and includes a device for purifying industrial wastewater contaminated at a factory or the like, a water purifier for purifying tap water at home, and the like.

In particular, the water purifier has a plurality of filters that can remove various impurities and germs from the inside of the body, and the tap water introduced from the outside is purified through the filter.

Meanwhile, a conventional water purifier has an inlet portion for receiving raw water from the outside on one side of the main body, a plurality of filters connected to the inlet portion for purifying the supplied raw water, So as to be replaceable. Further, a filter replacement door fixed to one side of the purifier body by bolts or the like is provided to open the filter replacement door and replace the filter.

However, in the conventional water purifier, it is necessary to shut off the water flowing in from the outside by locking the water pipe connected to the inflow section before the filter is replaced. At this time, since the position of the water pipe valve is different depending on the place where the water pipe is installed and is placed in a position not visible such as under the sink, it is difficult to find such a valve in case of a non-specialist. There is a problem that the blocking operation for locking is very troublesome.

Further, when the filter is separated without performing the water shut-off work in advance due to lack of expertise in the water purifier or due to carelessness of the operator, the water introduced into the filter is sprayed to all directions due to high water pressure.

At this time, the water jetted to all directions causes a safety accident such as a short circuit, or penetrates into the water purifier, causing damage to various electronic components, thereby causing the product to fail.

Further, since the filter is not easily replaced due to the above-described safety problem and troublesome, the filter is replaced by hiring a professional person, so that additional cost burden is incurred, and the filter replacement time is delayed and the contaminated water is supplied .

Korean Patent No. 10-0278078

In order to solve the above problems, it is an object of the present invention to provide a cover member interlocking safety water treatment apparatus capable of easily replacing filters by selectively blocking raw water flowing in replacing a filter, preventing safety accidents caused by leakage, And the like.

In order to solve the above problems, the present invention provides a water purifier comprising: a case part having a water filter connected to the raw water supply line for water treatment to purify raw water and having an opening at one side; A cover member which is opened and closed by covering the opening portion and has a hooking portion at one side thereof; An engaging portion engaging with the engaging portion to restrict opening and closing of the cover member; And a raw water shutoff valve for selectively shutting off the raw water supply line when the coupling unit is coupled.

The raw water shutoff valve selectively blocks the raw water supply line as the rotation knob is rotated. The raw water shutoff valve selectively blocks the raw water supply line as the rotation knob is rotated desirable.

At this time, a restraining protrusion is protruded at the inner end of the restraint extension portion, and an arcuate rib that engages with the rotation locus of the restraining protrusion protrudes at a predetermined rotation angle, and the restraining protrusion It is preferable that a fixed step is formed to protrude by being pressed and fixed.

In addition, a cylindrical body is extended below the rotary knob, and a stopper for restricting the rotation of the guide protrusion protruding from the cylindrical body and restricting the rotation angle is provided at a portion where the cylindrical body is seated by the raw water shutoff valve .

The raw water shutoff valve may include a valve body connected to the raw water supply line, and a rotary opening / closing member selectively opening and closing the valve body according to the rotation of the rotary knob.

The valve body is provided with an inlet and an outlet. The valve body has a first through hole formed along the flow direction of the inlet so that the inlet and the outlet are selectively communicated with each other as the rotary opening and closing member is rotated, And a second through hole formed along the flow direction of the outlet.

In the meantime, a cylindrical body inserted into a coupling hole formed in the case portion is extended below the coupling portion, and a coupling protrusion protruding along the circumferential direction on either the outer circumference of the cylindrical body or the inner circumference of the coupling hole is formed It is preferable to be bound to the rim through the groove.

Preferably, the latching portion is extended from the cover member so as to be bent toward the outer side of the case portion on which the engaging portion is seated.

In addition, it is preferable that the locking groove formed at one side of the cover member is formed with a locking step for selectively engaging with the engaging part, and the case part is provided with an extending groove part communicating with one side of the locking groove part.

Through the above solution, the cover member interlocking safety water treatment apparatus according to the present invention provides the following effects.

First, since the cover member is selectively restrained by the rotation of the restricting extension portion protruding out of the rim of the rotary knob, the opening can not be opened without the operation of the rotary knob provided to interlock with the raw water shutoff valve, Can be improved.

Secondly, the raw water shutoff valve interlocks with the rotation of the rotary knob to selectively block the raw water supply line, thereby preventing a safety accident such as a short circuit caused by leakage of raw water at the time of replacing the filter, preventing flooding of internal components, The supply and shutoff of the raw water can be changed according to the rotating direction of the opening and closing member, so that the production economics of the product can be improved by reducing the number of parts.

Thirdly, the raw water shutoff valve is connected to the raw water supply line to block the inflow of raw water regardless of the number of filters, so that the raw water shutoff valve can be easily installed in existing products, thereby improving the compatibility of products.

Fourthly, since the engaging projection is restricted to the rim of the engaging hole as it passes through the engaging groove and is rotated in one direction, it is possible to prevent the cover member from being forcibly opened with a firm fixing force so that the safety of the product is improved, So that the productivity can be improved by simplifying the assembling process.

FIG. 1A and FIG. 1B are perspective views of a cover member interlocking safety water treatment apparatus according to an embodiment of the present invention. FIG.
FIG. 2A and FIG. 2B are perspective views showing a coupling type of the locking part and the restraint extension part in the cover member interlocking safety water treatment apparatus according to the embodiment of the present invention. FIG.
3 is an exemplary view showing an internal structure of a cover member interlocking safety water treatment apparatus according to an embodiment of the present invention.
4 is a perspective view showing a raw water shutoff valve in a cover member interlocking safety water treatment apparatus according to an embodiment of the present invention.
FIG. 5 is a perspective view illustrating a combined form of a raw water shut-off valve and a case according to an embodiment of the present invention; FIG.
6A and 6B are cross-sectional views illustrating opening and closing of a raw water shutoff valve according to an embodiment of the present invention;
FIG. 7A and FIG. 7B are perspective views showing a coupling type of the locking part and the restraint extension part in the cover member interlocking safety water treatment apparatus according to another embodiment of the present invention. FIG.

Hereinafter, a cover member interlocking safety water treatment apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIGS. 1A and 1B are perspective views of a cover member interlocking safety water treatment apparatus according to an embodiment of the present invention. FIGS. 2A and 2B are perspective views of a cover member interlocking safety water treatment apparatus according to an embodiment of the present invention, FIG. 3 is an exemplary view showing an inner structure of a cover member interlocking safety water treatment apparatus according to an embodiment of the present invention. Referring to FIG.

1A to 3, a cover member interlocking safety water treatment apparatus 100 according to an embodiment of the present invention includes a case 10, a cover member 20, a coupling portion 30, (40).

On the other hand, the case part 10 includes a water filter 150, a raw water supply line 1, and a water intake valve 190. Here, the case 10 may form an outer surface of the water treatment apparatus 100, and a mounting space may be formed on the inner side of the case 10 to mount the inner substrates for water treatment.

At this time, the raw water supply line (1) communicates with the outside of the case part (10) so that raw water supplied from an external water pipe or the like is introduced. The raw water shutoff valve 40 is connected to the raw water supply line 1 and the raw water shutoff valve 40 blocks the raw water supply line 1 according to the rotation direction of the rotary knob 31 Open.

In addition, the water filter 150 is provided in the mounting space, and a plurality of water filters 150 are sequentially connected to the raw water supply line 1 for water treatment. Here, the term water treatment refers to the process of removing harmful substances contained in the raw water and additionally supplying substances beneficial to the human body.

For example, the water filter 150 may include a pretreatment filter 151 for removing the residues contained in the raw water, an activated carbon composite filter 152 for removing organic chemicals or unpleasant odors and tastes and supplying minerals, A nano-positive filter 153 for removing bacteria, and the like.

The raw water that has been water-treated by the water filter 150 may flow to the intake valve 190 and be supplied to the user.

The case 10 is formed with an opening 12 at one side thereof and a user removes the cover member 20 from the water filter 12 provided in the mounting space through the opening 12, 150 can be replaced.

On the other hand, the cover member 20 is selectively opened and closed by covering the opening 12, and a latching part 21 is provided at one side thereof. Here, the cover member 20 may be slid along the rim of the opening 12 and may be opened / closed. The other side of the cover member 20 is hingedly connected to the opening 12, It is possible.

2A and 2B, the cover member 20 is slidably opened along the rim of the opening 12, and the latching portion 21 extends from the cover member 20 to the rotation knob (not shown) 31 may be folded to the outer side of the case 10 on which the first and second housings are mounted.

Here, the cover member 20 may be arranged to slide away from the opening 12 by pushing the cover member 20 toward the rear side of the case 10 where the rotary knob 31 is seated. At this time, the latching part 21 may extend from one side of the rear end of the cover member 20 and may be bent to the rear side 11 of the case part 10.

The bent bent portion 21 is restrained by the engaging portion 30 to limit the sliding movement of the cover member 10. [

Although the engaging portion 30 is formed on the rear surface 11 of the outer surface of the case 10 in the present embodiment, And the engaging portion 21 may be disposed corresponding to the position where the engaging portion 30 is disposed.

The engaging portion 30 is engaged with the engaging portion 21 to restrict opening and closing of the cover member 20, which is disposed at one side of the case portion 10. The raw water shutoff valve 40 opens the raw water supply line 1 when the engaging part 30 is coupled to the engaging part 21 and the engaging part 30 is engaged with the engaging part 21, The raw water supply line 1 can be closed.

That is, the raw water shutoff valve 40 is provided to selectively block the raw water supply line 1 as the engaging part 30 is engaged with and separated from the engaging part 21.

The engaging portion 30 is composed of a rotation knob 31 disposed to rotate in the case portion 10 and a restraint extension portion 31a extending at an end of the rotation knob 31. The rotation of the rotation knob 31 However, the coupling portion 30 is not limited to this, and may be configured in various forms.

For example, the engaging portion 30 is provided to be detachable from the case portion 10, and when the engaging portion 30 is engaged, the cover member 20 is restrained and the raw water shutoff valve 40 is opened The cover member 20 may be detached from the case 20 and the raw water shutoff valve 40 may be blocked to shut off the raw water. It is also possible for the opposite end of the cover member 20 to be hinged to the case part 10 so as to restrain the cover member 20 as it is separated from and coupled to the part 10.

The coupling portion 30 includes a rotation knob 31 having a constraining extension portion 31a that is selectively engaged with the coupling portion 21 as the coupling portion 30 is rotated. The rotation knob 31 is coupled to one side of the case 10 and has one end of the rotation knob 31 and a restraining extension 31a extending outwardly of the coupling part 30 Respectively.

The restraint extension portion 31a may be selectively engaged with the locking portion 21 to restrict the cover member 20 according to the rotation of the rotation knob 31. [

In this case, the term 'latching' means that the cover member 20 is fixed without being moved in the opening direction as the outer surface of the latching portion 21 is caught by the inner side surface of the restricting extension portion 31a. desirable.

That is, when the locking protrusion 31a is disposed in the sliding direction of the cover member 20 in accordance with the rotation of the rotation knob 31, the locking movement of the cover member 20 is restricted, The cover member 20 may be slid to open the opening 12 when the cover member 20 is detached from the slide direction.

Of course, the cover member 20 may be selectively opened and closed as the other side is hingedly connected to the opening portion 12 and the cover member 20 may be selectively opened and closed. In this case, It is restrained and released to the extended portion 31a, thereby enabling selective hinge rotation.

The locking protrusion 31a protrudes outside the rim of the coupling portion 30 and is selectively engaged with the locking portion 21 of the cover member 20 to rotate the cover member 20 The opening 12 can not be opened without the operation of the rotary knob 31 interlocked with the raw water shutoff valve 40, so that the safety of the product can be improved.

At this time, the rotary knob 31 is provided to interlock with the raw water shutoff valve 40, and the raw water shutoff valve 40 can supply the raw water to the water treatment apparatus 100 when the cover member 20 is restrained, And shut off the raw water from the outside when the cover member 20 is released. Accordingly, it is possible to prevent a safety accident such as a short circuit caused by leakage of raw water at the time of replacing the filter, and the safety of the product can be further improved by preventing flooding of internal parts.

2A, a restricting projection 32 is protruded from the inner end of the restraint extension 31a. The restraint protrusion 32 is formed with a circle, which engages with the rotation locus of the restricting projection 32, It is preferable that the arc-shaped ribs 21a are staggered at a predetermined rotation angle.

The angle formed by the arcuate ribs 21a is set such that the raw water shutoff valve 40 interlocked with the rotary knob 31 when the restricting protrusion 32 is released to one side of the arcuate rib 21a And is set to block the raw water supply line (1).

More specifically, when the rotary knob 31 is rotated in one direction (the counterclockwise direction in FIG. 2A), the restraining protrusion 32 slides along the outer surface of the arc-shaped rib 21a and moves toward the center of the retaining portion 21 do. Further, it can be pressed by the fixed step 21b protruding from the center of the engaging part 21 to maintain the fixed state.

At this time, the cover member 20 is restricted in sliding movement in the forward and backward directions and is restricted to the opening portion 12, and the restraining protrusion 32 is engaged with the arc-shaped rib 21a, So that the rotation of the cover knob (20) causes the rotation knob (31) to flow, thereby preventing malfunction such as blocking of raw water during use, thereby improving the reliability of the product.

The raw water shutoff valve 40 may open the raw water supply line 1 to supply raw water in a state where the cover member 20 is constrained to the opening 12. [

2B, when the rotary knob 31 is rotated in the other direction (clockwise direction in FIG. 2B), the restraining protrusion 32 is slid along the outer surface of the arc-shaped rib 21a, And is moved to the outside of the engaging portion 21.

At this time, the restraint extension portion 31a releases the restraint of the latching portion 21, so that the cover member 20 is slid in the forward and backward directions A and can open the opening portion 12. [

The rotary knob 31 is rotated in a direction to release the restraint of the cover member 20 and the raw water shutoff valve 40 blocks the raw water supply line 1.

It is preferable that the raw water shutoff valve 40 is disposed between the portion of the raw water supply line 1 connected to the water filter 150 and the portion connected to the external raw water supply source. Accordingly, since the raw water shutoff valve 40 blocks the inflow of raw water regardless of the number of filters, it can be easily installed in a conventional product, so that the compatibility of products can be improved.

FIG. 4 is a perspective view showing a raw water shutoff valve in a cover member interlocking safety water treatment apparatus according to an embodiment of the present invention, FIG. 5 is a perspective view showing a combination of a raw water shutoff valve and a case part according to an embodiment of the present invention, 6A and 6B are cross-sectional views illustrating opening and closing of a raw water shutoff valve according to an embodiment of the present invention.

4 to 6B, the raw water shutoff valve 40 includes a valve body portion 40a connected to the raw water supply line 1 and a valve body portion 40a connected to the valve body portion 40a, And a rotary opening / closing member 45 for selectively opening and closing the inside of the rotary door 40a.

The valve body 40a has an outlet 42 connected to the raw water supply line 1 and an inlet 41 through which the raw water flows from the outside. The valve body 40a may have a hollow portion communicating with the outlet 42 and the inlet 41 on the inside.

The hollow portion is provided with the rotation opening and closing member 45 and the rotation opening and closing member 45 is provided with a hollow cylindrical portion 45a which is formed in the opening 41 so that the inlet 41 and the outlet 42 can be selectively opened, A first through hole 45b formed along the flow direction and a second through hole 45a communicating with the first through hole 45b and formed along the flow direction of the outflow hole 42 .

When the first through hole 45b is connected to the inlet 41 and the second through hole 45a is arranged to be connected to the outlet 42, And may be discharged to the outlet (42).

At this time, the flow direction of the outflow port 42 and the flow direction of the inlet port 41 may be formed in the same straight line, but in the present embodiment, the structure in which the respective flow directions are arranged vertically will be described as an example.

As shown in FIG. 4, it is preferable that the inlet 41 and the outlet 42 of the valve body 40a are arranged vertically to each other. The outlet port 42 is formed on one side of the outer circumferential surface of the valve body portion 40a and the inlet port 41 is formed in the valve body portion 40a so as to have a flow direction perpendicular to the flow direction of the outlet port 42. [ As shown in FIG.

The outlet 42 is provided with a collet 42a and a color cap 42b for fixing the raw water supply line 1 inserted into the outlet 42. The raw water supply line 1 And a first packing member 42c sealing the end of the first packing member 42c.

In detail, the first through-hole 45b and the second through-hole 45a communicate with each other to form a valve passage. 6A, when the first through hole 45b is communicated with the inlet 41 and the second through hole 45a is communicated with the outlet 42, Can flow.

6B, when the rotary opening / closing member 45 is rotated and the second through hole 45a is separated from the outlet 42, the flow of raw water into the raw water supply line 1 is interrupted . At this time, the second packing member 46 is preferably provided on the outer side of the second through hole 45a.

The second packing member 46 seals the outlet 42 when the second through hole 45a is spaced apart from the outlet 42 so that the raw water introduced into the hollow is discharged from the outlet 42, Can be prevented.

The rotary opening and closing member 45 is coupled by a coupling member 49 so as to be rotated integrally with the rotary knob 31. The rotary opening and closing member 45 has a third packing member 47, And is inserted into the raw water shutoff valve 40. [

As described above, the raw water shutoff valve 40 is formed in a simple structure in which the raw water supply and shutoff are switched according to the rotational direction of the rotary opening / closing member 45, thereby reducing the number of components. Thus, productivity is improved by simplifying the production process and reducing the production cost. .

Meanwhile, it is preferable that a cylindrical body 35 is extended below the rotary knob 31. The valve body portion 40a is formed with a coupling portion 44 extending upward along the hollow portion and the coupling portion 44 can be inserted and coupled to the inside of the cylindrical body 35. [

The coupling part 44 is provided with a seating part 48 for supporting the cylindrical body 35 to be seated along the outer periphery of the coupling part 44. The seating part 48 is provided with a cylindrical body 35, It is preferable that a stopper 48a for restricting the rotation of the guide protrusion 34 and restricting the rotation angle is provided.

In detail, the cylindrical body 35 is coupled to the coupling portion 44 so as to be rotated, and the guide projection 34 protruding from the lower end of the cylindrical body 35 is supported by the seating portion 48. Then, when the cylindrical body 35 is rotated, the guide protrusion 34 is slid along the seating portion 48 and is stopped by hanging the end of the stopper 48a.

At this time, the stopper 48a rotates about the rotation angle of the rotary opening / closing member 45, which is rotated integrally with the cylindrical body 35, at an angle point at which the second through hole 45a communicates with the outlet 42 The second through-hole 45a is spaced apart from the outflow port 42 and the second packing member 46 is limited to an angle point at which the outflow port 42 is sealed.

Accordingly, as the outlet 42 and the second through hole 45a are communicated with each other and separated from each other, the driving of the raw water to the raw water supply line 1 can be accurately performed, and the raw water leakage due to the excessive rotation The reliability of the product can be improved.

4 to 5, the cylindrical body 35 is inserted into a coupling hole 11a formed in the case 10, and a coupling protrusion 33 is formed on the outer circumferential surface of the cylindrical body 35, And a coupling groove 11b through which the coupling protrusion 33 passes may be formed in the coupling hole 11a. The engaging recesses 11b may be opposed to the engaging protrusions 33, respectively.

Specifically, the coupling protrusion 33 is constrained to the edge of the coupling hole 11a as it passes through the coupling groove 11b and is rotated in one direction. Therefore, the rotation knob 31 is firmly fixed to the case part 10 to prevent the cover member 10 from being forcibly opened, thereby improving the safety of the product.

In addition, since it is fixed to the rim by being rotated at a predetermined angle in one direction to prevent deviation, the productivity can be improved by simplifying the assembling process.

Of course, each of the adjacent engaging projections 33 may be formed at unequal intervals such that the arrangement angle is asymmetric. Accordingly, the engaging projection 33 can pass through the engaging recess 11b only in a predetermined direction, so that the assembling direction can be imparted and assembled in the correct direction.

At this time, the coupling protrusion 33 may be formed in the coupling hole 11a and the coupling groove 11b may be formed on the outer circumferential surface of the cylindrical body 35.

When the rotary knob 31 is rotated to change the open / close state of the raw water supply line 1, the engaging projection 33 inserted through the one engaging groove portion 11b is engaged with the rotary knob 31, And can be discharged to the engaging groove portion of the other side according to the rotation of the engaging groove portion. The above-described disengagement of the engaging projection 33 may cause a malfunction such that the rotation knob 31 is twisted during the rotation operation to leak raw water or stop rotation itself.

In order to prevent this, the arrangement angle between the engaging projections 33 is set such that the rotation knob 31 is rotated in one direction to open the raw water supply line 1 and the rotation knob 31 is rotated in the other direction Is set to be wider than an angle between points where the raw water supply line (1) is blocked.

FIGS. 7A and 7B are perspective views showing a coupling type of the locking part and the locking extension part in the cover member interlocking safety water treatment apparatus according to another embodiment of the present invention. FIG.

In the present embodiment, the basic configuration except for the engagement between the engagement protrusion 222 of the cover member 220 and the restraint extension portion 231a is the same as that of the above-described embodiment, so that the description of the same portions will be omitted.

7A and 7B, the other side of the cover member 220 is hinged to the rim of the opening 210a, and the constraining groove 221 formed at one side of the cover member 220 has the constraining extension It is preferable to form a latching protrusion 222 selectively engaged with the latching portion 231a.

Specifically, the front side of the cover member 220 is hinged to the front edge of the opening 210a, and the rear side of the cover member 220 is selectively spaced from the rear side edge of the opening 210a B to open and close.

Of course, even when the cover member 220 is slidably opened along the rim of the opening 210a, the restraint extension portion 231a may restrict the sliding movement of the cover member 220. [

At this time, it is preferable that a constraining groove 221 is formed at a rear end of the cover member 220. An extension groove 212 is formed on the rear surface of the case 210 in accordance with the rotation locus of the restraint extension 231a so that the extension groove 212 is connected to one side of the restriction groove 221 .

More specifically, a restraining protrusion 232 protruding from the inside of the restraint extension portion 231a is inserted into the extended recess portion 212 and is moved along the rotation of the rotation knob 231 to the one side of the restraint recess portion 221 . The cover member 220 is engaged with the engaging step 222 formed on the other side of the restricting groove 221.

At this time, the raw water shutoff valve interrupts the raw water supply line in a state where the restraining protrusion 232 is inserted into the extended groove portion 212 so that the restraint of the cover member 220 is released to open and close (FIG. 7B) The raw water supply line can be opened in a state where the restricting protrusion 232 is caught by the latching protrusion 222 to restrict the cover member 220 (FIG. 7A).

Accordingly, even if a separate preliminary operation for shutting off the raw water supply source such as the water pipe is not performed when the cover member 220 is opened for replacing the filter or repairing the internal parts, The safety of the product can be improved by preventing a safety accident such as electric shock due to leakage of raw water or damaging electronic parts.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

100: Cover member interlocking safety water treatment device 1: raw water supply line
10, 210: case part 12, 210a:
11a: Coupling hole 11b: Coupling groove
20, 220: cover member 21:
21a: arc-shaped ribs 30, 230:
31, 311: rotation knob 31a, 231a:
32,232: restraining projection 35: cylindrical body
33: engaging projection 34: guide projection
40: Raw water shutoff valve 40a: Valve body part
45: rotation opening / closing member 44:
41: inlet 42: outlet
45b: first through hole 45a: second through hole
221: restraining groove portion 222:
150: Water filter

Claims (9)

A case part having an opening at one side thereof and a water filter for water treatment of the raw water flowing in the raw water supply line,
A cover member which is opened and closed by covering the opening portion and has a hooking portion at one side thereof;
An engaging portion engaging with the engaging portion to restrict opening and closing of the cover member; And
And a raw water shutoff valve for selectively shutting off the raw water supply line when the coupling unit is coupled. The method according to claim 1,
Wherein the engaging portion includes a rotation knob having a restricting extension portion that is selectively engaged with the retaining portion as the retaining portion is rotated,
Wherein the raw water shutoff valve selectively blocks the raw water supply line as the rotation knob is rotated. 3. The method of claim 2,
A restraining protrusion is protruded from an inner end of the restricting extension portion,
Wherein the engaging portion is provided with an arc-shaped rib engaged with the rotation locus of the restricting projection at a predetermined rotation angle,
And a fixing step protruded from the center of the locking part to protrude and fix the locking protrusion. 3. The method of claim 2,
A cylindrical body is extended below the rotary knob,
Wherein the water shutoff valve is provided with a stopper for restricting the rotation of the guide protrusion protruding from the cylindrical body to limit the rotation angle of the cylindrical valve when the cylindrical body is seated. 3. The method of claim 2,
The raw water shutoff valve
A valve body connected to the raw water supply line, and a rotary opening / closing member selectively opening and closing the inside of the valve body according to the rotation of the rotary knob. 6. The method of claim 5,
The valve body is provided with an inlet and an outlet,
A first through hole formed along the flow direction of the inlet so that the inlet and the outlet are selectively communicated with each other as the rotary opening and closing member is rotated, and a second through hole formed in the flow path of the outlet, And a through hole is provided in the cover member. The method according to claim 1,
And a coupling protrusion protruding in the circumferential direction on one side of the outer circumference of the cylindrical body and the inner circumference of the coupling hole is formed on the lower side of the coupling portion, And is bound to the rim of the cover member. The method according to claim 1,
Wherein the engaging portion extends from the cover member so as to be bent to the outer side of the case portion on which the engaging portion is seated. The method according to claim 1,
A locking protrusion is formed in the locking recess formed at one side of the cover member to selectively engage with the locking portion,
Wherein the case portion is formed with an extending groove portion communicating with one side of the restricting groove portion.

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