KR100836719B1 - Check valve for water softener - Google Patents

Abstract

A check valve for a water softener is provided to prevent water from leaking by maintaining excellent adhesion although elastic force of a spring is lowered to not more than an initial elastic force value by a long-term use of the spring, and enhance adhesion of the opening-and-closing member by improving a contact system between a housing part and an opening-and-closing member. A check valve(200) for a water softener comprises: a mesh part(210) which is projected to a predetermined elevation from the bottom of an ion resin tank, and which has a mesh such that only water passes through the mesh; a housing part(220) of which an inlet side is connected to a bottom part of the mesh part, on which an inclined face(223) is formed such that the inclined face is increased as it goes from an upper side to a lower side of the housing part, and in which a predetermined space is formed; an opening-and-closing member(230) which has an inclination part(231) formed on an upper edge thereof such that the inclination part is capable of contacting the inclined face of the housing part, and which has a guide bar(233) with a predetermined length formed on a bottom part thereof; an elastic member(240) of which one end comes in contact with the bottom part of the opening-and-closing member to provide the opening-and-closing member with elastic force such that the inclination part of the opening-and-closing member is closely adhered to the housing part; and a cover member(250) which supports the other end of the elastic member, which has a slide groove(251) formed in the center thereof such that the guide bar is slid into the slide groove, which has a plurality of water discharge holes(252) formed in a circumference of the slide groove, and which is installed on a lower part of the housing part. Further, a packing ring(232) is installed at the inclination part of the open-and-closing member, and the elastic member is a coil spring.

Description

Check Valve for Water Softener

1 is a view showing the structure of a conventional conventional water softener,

Figure 2 is a cross-sectional view showing the structure of a conventional check valve for water softeners,

3 is an operation state diagram of a conventional water softener check valve,

4 is a perspective view showing a check valve for a water softener according to the present invention;

5 is a cross-sectional view of a check valve for a softener according to the present invention;

6 is an operational state diagram of the check valve according to the present invention.

<Description of the symbols for the main parts of the drawings>

200: check valve of the present invention 210: mesh portion

220: housing portion 221: housing portion inlet

222: housing portion outlet 223: inclined surface

230: opening and closing member 231: inclined portion

232: packing ring 233: guide bar

240: elastic member 250: cover member

251: slide groove 252: water extraction

The present invention relates to a check valve for a softener, and more particularly, to a check valve for a softener such that the airtightness is improved for the same spring force by reducing the contact area by changing the check valve from the conventional surface contact method to the line contact method. will be.

In general, tap water and groundwater contain various kinds of impurities, and representative impurities include ionic substances such as potassium, magnesium, sodium, bicarbonate, sulfuric acid, chlorine, silicon dioxide, iron, and manganese. Containing water is called hard water.

Ionic substances contained in hard water are beneficial to the body, but most of them have adverse effects such as promoting aging of the skin.

In particular, tap water contains a large amount of chlorine components used in the purification process, and contaminated surface water flows into the household through the aged pipes, which causes harmful effects on iron, lead, zinc, Various heavy metals, such as mercury, are included.

The ionic materials and heavy metals cause various skin diseases or promote skin aging. To prevent this, tap water is passed through a Na (+)-type strong acid cation exchange resin, and Ca (+2), which is a hardness component contained in water, ) And Mg (+2) ions are developed for soft water by exchanging Na (+) ions in ionic resin to soft water.

1 is a view showing the structure of a conventional water softener of the prior art, FIG. 2 is a sectional view showing the structure of a conventional water softener check valve, and FIG. 3 is a state diagram of a conventional water softener check valve.

Referring to Figures 1 and 2 will be described the problems occurring in the conventional process of tap water is softened and the check valve for a conventional water softener.

Tap water supplied to each home through a water pipe (hereinafter referred to as “raw water”) is introduced into the ion resin tank 2 in which the ion resin is stored through the raw water supply pipe 1, and the raw water is supplied to the ion resin tank ( While passing through 2) is converted into soft water through the ion exchange process as described above, the soft water is discharged back to the faucet (4) installed in each home through the soft water pipe (3).

In other words, the ion resin tank (2) is filled with the ion resin (R) for converting the raw water into soft water, and the inlet (5) provided on the upper portion of the ion resin tank (2) is impurity contained in the raw water A filter 6 for filtering is installed.

The filter 6 is inserted through the inlet part 5 and mounted inside the inlet part 5 to filter out impurities or suspended matter contained in the raw water introduced through the raw water supply pipe 1. When the filter 6 is used for a certain period of time, the performance deteriorates and the filter 6 needs to be replaced with another filter. When the filter 6 is replaced with a new one, the filter 6 is taken out through the inlet 5 again and replaced with a new one.

As described above, the raw water is introduced into the lower ion resin R while the impurities are filtered while passing through the filter 6 in the upper portion of the ion resin tank 2, so that the raw water and the ion resin are in the ion resin tank 2. The raw water is converted into soft water through the ion exchange process as it is mixed together in the process.

At this time, the raw water should be mixed with the ion resin (R) to have time for the ion exchange reaction to occur, because of this, the bottom of the ion resin tank (2) to the soft water only when the ion resin tank (2) at a predetermined pressure The check valve 100 for discharging the converted water to the outside is installed.

That is, since the ion resin tank 2 is filled with the ion resin R and the raw water, the ion resin tank 2 in the closed state becomes a very high pressure, and when the pressure increases, the check valve having the mesh ( 100) ion resin (R) is not discharged, only water is discharged to the outside.

In the conventional check valve 100 described above, as shown in FIG. 2, the mesh part 110 having a mesh 111 through which only water passes through the ion resin without flowing out, and the inlet 121 side has the mesh part. The housing portion 120 is connected to the 110 and the predetermined space is formed so that the water can pass through the inside, and moving in the housing portion 120 to open and close the inlet 121 side of the housing portion 120 Opening and closing member 130, the spring 140 to provide an elastic force so that the opening and closing member 130 is in close contact with the inlet 121 side of the housing portion 120, and the other end of the spring 140 to support the housing portion The cover 150 is configured to discharge the water introduced into the 120.

At this time, the mesh portion 110 is a portion protruding above the bottom of the ion resin tank 2, the housing portion 120 is integrally connected to the lower portion of the mesh portion 110 to the mesh portion 110; Passed water consists of a structure that enters through the inlet 121 side.

Here, when the ion resin tank 2 is filled with water so that the pressure of the ion resin tank 2 is greater than the elastic force of the spring 140 provided to the opening and closing member 130, the opening and closing member 130 is shown in FIG. As shown in FIG. 3, when the spring 140 overcomes the elastic force of the spring 140 and moves downward, a gap is formed between the housing part 120 and the opening / closing member 130. After being introduced into the) is discharged out through the water extraction hole 151 formed in the cover 150.

However, the conventional water softener check valve as described above has a structure in which the inlet 121 side of the housing portion 120 and the upper surface of the opening / closing member 130 are in surface contact with each other, as shown in FIGS. 2 and 3. Therefore, when the elastic force of the spring 140 is lowered by the long time use of the check valve 100, the adhesion force of the opening and closing member 130 is lowered and water leaks to the outside through the check valve 100 occurs.

In addition, in the conventional water softener check valve 100, even if there is no change in the elastic force of the spring 140, the opening and closing member 130 is the housing portion 120 due to the surface contact method between the housing 120 and the opening and closing member 130. Since there is little adhesion force on the spring, in order to prevent leakage of the check valve 100, a spring having a relatively large elastic modulus must be employed to correspond to the contact area of the opening / closing member 130.

The present invention has been proposed to solve the above problems, the object of the water softener check valve to maintain a good adhesion even if the elastic force is smaller than the initial value due to the long-term use of the spring to prevent water leakage It is provided.

In addition, by improving the contact method between the housing portion and the opening and closing member in the check valve to increase the adhesion of the opening and closing member without replacing the spring with a large modulus of elasticity.

In the present invention for achieving the above object, in the check valve for a softener installed on the bottom of the ion resin tank in which the ion resin is stored,

A mesh portion protruding from the bottom of the ion resin tank to a predetermined height and having a net so that only water passes therethrough;

A housing part having an inlet side connected to a lower part of the mesh part and having an inclined surface gradually widening toward a lower part thereof, and having a predetermined space therein;

An opening and closing member having an inclined portion at an upper edge thereof to be in contact with an inclined surface of the housing part, and having a guide bar having a predetermined length at a lower portion thereof;

An elastic member provided at one end of the opening and closing portion of the opening and closing member to be in close contact with the housing to provide an elastic force;

And a cover member supporting the other end of the elastic member and having a slide groove in the center thereof to allow the guide bar to be inserted and sliding, and a plurality of outlet holes provided around the slide groove and installed at a lower portion of the housing part. It is done.

In addition, the inclined portion of the opening and closing member is characterized in that the packing ring is installed to make a line contact between the inclined surface of the housing portion.

In addition, the size of the mesh forming the mesh in the mesh portion is characterized in that it is formed to be smaller than the size of the one ion resin.

In addition, the elastic member is characterized in that the coil spring.

EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention is demonstrated in detail based on attached drawing.

Figure 4 is a perspective view showing a check valve for a softener according to the present invention, Figure 5 is a cross-sectional view of the check valve for a softener according to the present invention, Figure 6 is a state diagram of the operation of the check valve according to the present invention.

First, referring to Figures 4 and 5 will be described the configuration of the check valve for the softener according to the present invention.

 Check valve 200 of the present invention is largely composed of a mesh portion 210, a housing portion 220, opening and closing member 230, elastic member 240, cover member 250, the mesh portion 210 As a portion protruding to a predetermined height from the bottom of the ion resin tank, the mesh portion 210 has a mesh of a predetermined size so that only the water flows out of the ion resin stored in the ion resin tank.

At this time, the size of the mesh 211 constituting the mesh of the mesh unit 210 should be smaller than the size of one ion resin stored in the ion resin tank.

On the other hand, the housing portion 220 is provided with an inlet 221 through which water is introduced into the upper portion and an outlet 222 through which water is discharged from the lower portion, wherein the inlet 221 side of the mesh portion 210 is provided. The water introduced through the mesh unit 210 is connected to the lower portion and enters through the inlet 221 of the housing unit 220.

In addition, the inlet 221 side connected to the mesh unit 210 is provided with an inclined surface 223 that gradually widens toward the bottom, the inner diameter of the place where the inclined surface 223 is provided becomes larger toward the bottom.

In addition, the housing 220 has to be built-in the opening and closing member 230 and the elastic member 240 which will be described later, and the water introduced through the inlet 221 side should pass, so that a predetermined space is provided therein.

On the other hand, the opening and closing member 230 is embedded in the housing 220 to control the discharge of the water in the ion resin tank by opening and closing the inlet 221 of the housing 220, the upper portion of the opening and closing member 230 The inclined portion 231 is provided at the edge to be in contact with the inclined surface of the housing portion 220.

The inclined portion 231 preferably has the same angle as the inclined surface 223 of the housing portion 220, and the inclined portion 231 is in line contact with the inclined surface 223 of the housing portion 220. Packing ring 232 is installed to make this.

The packing ring 232 is installed at the edge of the inclined portion 231 of the opening and closing member 230 and the housing when the opening and closing member 230 is pressed toward the housing portion 220 by the elastic member 240 to be described later The packing ring 232 is in close contact with the inclined surface 223 of the housing 220, and the packing ring 232 is substantially in line contact with the inclined surface 223 of the housing 220. It will increase the adhesion.

For reference, when comparing the contact pressure between the conventional surface contact check valve 100 and the line contact check valve 200 of the present invention is as follows.

Assume conventional contact pressure is P1, spring elasticity is F1 and contact area is A,

Assuming that the contact pressure of the present invention is P2, the spring elastic force is F2, and the contact area is a,

P1 = F1 / A, P2 = F2 / a, where using the same spring, F1 = F2 = F,

Since the contact area will be much smaller at the line contact than the surface contact, A> a.

Therefore, since F = P1 · A = P2 · a, P1 <P2 is concluded.

That is, assuming that the same spring is used, if the contact area decreases, the contact pressure on the contact surface is much increased.

As such, the packing ring 232 of the opening / closing member 230 is expected in order to expect a close line contact between the inclined surface 223 of the housing 220 using the packing ring 232. It is preferable that the inclined portion 231 is installed to protrude slightly.

Therefore, since the elastic force provided to the opening and closing member 230 in the elastic member 240 is all concentrated in the packing ring 232, the close contact pressure between the packing ring 232 and the inclined surface 223 of the housing portion 220 is Significantly higher, the airtightness is better than before.

In addition, the lower part of the opening and closing member 230 is provided with a guide bar 233 to smoothly guide the opening and closing member 230 in the housing portion 220.

On the other hand, there is provided an elastic member 240 for providing an elastic force to the opening and closing member 230 so that the opening and closing member 230 is in close contact with the inclined surface 223 of the housing portion 220, the opening and closing member 230 There may be a variety of elastic members 240 to provide an elastic force to, in the present invention, a coil spring having a predetermined pitch is adopted.

The coil spring 240 is inserted into the guide bar 233 of the opening and closing member 230 so that one end thereof is in contact with the lower portion of the opening and closing member 230.

On the other hand, the other end of the coil spring 240 is supported by a cover member 250 which is installed at the outlet 222 of the housing portion 220, the cover member 250 is a guide of the opening and closing member 230 A slide groove 251 is provided to allow the bar 233 to be inserted to smoothly move the opening / closing member 230 in the housing 220.

The slide groove 251 may be provided at a position corresponding to the guide bar 233. Since the guide bar 233 is preferably provided at the center of the opening / closing member 230, the slide groove 251 is also provided. It is preferably provided in the center of the cover member 250.

In addition, the cover member 250 is provided with a water extraction hole 252 for discharging the water introduced into the housing portion 220 to the outside, the water extraction hole 252 is constant around the slide groove 251 It is preferable that a plurality be formed at intervals.

That is, the water extraction hole 252 is formed to be spaced apart at regular intervals along the circumferential direction with respect to the slide groove 251.

Therefore, when the cover member 250 is fixedly installed at the outlet 222 of the housing part 220, the other end of the coil spring 240 is supported by the upper surface of the cover member 250, and the coil spring is provided through one end. The elastic force of the 240 may be provided to the opening / closing member 230, and the opening / closing member fitted to the slide groove 251 may be provided when the opening / closing member 230 is moved toward the cover member 250 by the pressure of the ion resin tank. The guide bar 233 of the member 230 is gradually inserted into the slide groove 251 to guide the opening and closing member 230 to smoothly move the opening and closing member 230.

Hereinafter, the operation of the present invention will be described with reference to FIGS. 5 and 6.

If the ion resin tank does not reach the set pressure because the raw water is not yet filled in the ion resin tank, the check valve 200 installed on the bottom surface of the ion resin tank is caused by the elastic force of the elastic member 240 as shown in FIG. 5. The opening and closing member 230 may be configured to block the inlet 221 of the housing 220.

At this time, since the packing ring 232 of the opening and closing member 230 is strongly compressed by the line contact to the inclined surface 223 of the housing 220, the elastic force provided by the elastic member 240 is the packing ring ( All of them are concentrated in 232) and have very high adhesion.

In this state, when the raw water is filled in the ion resin tank and the raw water is changed to soft water by the ion exchange reaction, the pressure of the ion resin tank becomes very high so that the pressure acts on the upper surface of the opening / closing member 230. do.

When the pressure acting on the opening and closing member 230 is greater than the elastic force of the elastic member 240, the opening and closing member 230 is gradually moved downward, at this time packing in the inclined surface 223 of the housing portion 220 Water is passed through the gap between the housing 220 and the opening / closing member 230 by the ring 232, and the water is discharged through the inner space of the housing 220. 252) is discharged to the outside.

On the other hand, when the water in the ion resin tank is discharged to some extent and the pressure is lowered, the elastic force of the elastic member 240 is greater than the pressure acting on the opening and closing member 230, so that the opening and closing member 230 is circular as shown in FIG. Return to position

At this time, since the packing ring 232 installed on the edge of the inclined portion 231 of the opening and closing member 230 presses the inclined surface 223 of the housing portion 220 again to block a gap in which water flows, the ion resin tank The water that was in the water is no longer withdrawn through the check valve 200, the raw water is supplied again and remains in the ion resin tank until the ion resin tank reaches a predetermined pressure.

According to the present invention as described above, since the housing portion of the check valve and the opening and closing member adjusts the discharge of soft water in a line contact manner, the adhesive force is greatly increased compared to the conventional elastic member.

In addition, even if the elastic member is aged due to long-term use and the elastic force is slightly lower than the initial stage, there is no significant change in adhesion force, so that soft water does not leak.

In addition, if you want to maintain the same adhesion as in the prior art may use a lower elastic modulus, there is a side effect of reducing the cost of using a low-cost elastic member.

Claims (4)

In the check valve for water softener is installed on the bottom of the ion resin tank in which the ion resin is stored, A mesh unit 210 protruding to a predetermined height from the bottom of the ion resin tank and having a mesh to pass only water; A housing part 220 having an inlet side connected to a lower part of the mesh part 210 and having an inclined surface 223 gradually widening toward a lower part thereof, and having a predetermined space formed therein; An opening / closing member 230 having an inclined portion 231 at an upper edge thereof to be in contact with the inclined surface 223 of the housing portion 220 and having a guide bar 233 of a predetermined length at a lower portion thereof; An elastic member 240 having one end contacting the lower portion of the opening and closing member 230 to provide an elastic force such that the inclined portion 231 of the opening and closing member 230 is in close contact with the housing part 220; A slide groove 251 is provided to support the other end of the elastic member 240 and the guide bar 233 is inserted and slid in the center thereof, and a plurality of water outlets 252 are provided around the slide groove 251. A cover member 250 installed below the housing part 220; Check valve for a water softener, characterized in that configured to include. According to claim 1, The inclined portion 231 of the opening and closing member 230 is characterized in that the packing ring 232 is installed to make a line contact between the inclined surface 223 of the housing portion 220 Water softener check valve. The check valve for the softener according to claim 2, wherein the size of one mesh (211) forming the mesh in the mesh unit (210) is smaller than that of the ion resin. The water softener check valve according to any one of claims 1 to 3, wherein the elastic member is a coil spring.

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