JPH0567871U - Valve mechanism of water purifier - Google Patents

Abstract

(57) [Summary] [Purpose] Solving problems such as troubles related to the valve shaft operation part, which are problems in deriving purified water, at low cost without causing problems in molding of the members forming the valve chamber. To do. [Structure] A valve shaft 35 is provided so as to be switchable between a first position for communicating the raw water introduction chamber B with the water purification chamber A ₁ and a second position for communicating with the raw water discharge chamber A ₂ , and to the first position of the valve shaft. Under the switching, a screw type position restricting member 47 for restricting the movement of the valve shaft in the axial direction due to water pressure is screwed to the wall portion of the valve chamber.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a valve mechanism of a water purifier configured to be freely switchable between a state in which raw water for tap water is purified and discharged and a state in which raw water is discharged as it is.

[Prior Art]

 The water purifier described above is used by being attached to a faucet of a faucet, etc., and a valve shaft equipped with a valve body is connected to a first position for communicating the raw water introduction chamber with the water purification chamber and a first position for communicating with the raw water discharge chamber. It is provided in the valve chamber so that it can be switched between 2 positions, and the water purification chamber has a filter for removing microorganisms such as bacteria and fungi that cause turbidity and substances such as red rust and mud. A water purifier cartridge filled with activated carbon for removing residual chlorine is loaded, and the water flow load is extremely large.

[0002]

[Problems to be solved by the device]

 Therefore, when the faucet is opened with the valve shaft switched to the first position, or when the valve shaft is switched to the first position with the faucet open. , A shocking stress due to water pressure acts in the axial direction of the valve shaft (the direction of switching from the second position to the first position), and the operation knob is retained for the connection between the valve shaft and the operation knob and the main body of the water purifier. There was a risk of damage to the holding part, which could lead to malfunction or damage of the valve shaft operation part. The present invention provides a valve mechanism of a water purifier that solves the above problems by adding a simple position control means without causing inconvenience in molding the members that form the valve chamber. Has a purpose.

[0003]

[Means for Solving the Problems]

 In the valve mechanism of the water purifier according to the present invention which has achieved the above object, the valve shaft provided with the valve body is connected to the first position for communicating the raw water introduction chamber with the water purification chamber and the second position for communicating with the raw water discharge chamber. And a screw-type position restricting member that restricts movement of the valve shaft in the axial direction due to water pressure when the valve shaft is switched to the first position. It is characterized in that it is screwed from the raw water introduction chamber side to the wall of the valve chamber.

[0004]

[Action]

 According to the above characteristic configuration, the axial movement of the valve shaft due to the water pressure when the faucet is opened while the valve shaft is being switched to the first position is not inherently rigid due to the position regulating member and structurally. It is regulated by high valve chamber components, and damage to the valve shaft operation part due to impact stress is reduced.

[0005]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 shows a state in which the water purifier 1 is attached to the faucet 3 of the faucet 2, and FIG. 2 shows a horizontal cross section of the water purifier 1. In these drawings, reference numerals 4 and 5 denote outer cases that are locked and fitted to each other on a horizontal plane. As shown in FIG. 3, a bottomed cylindrical case 7 is provided so that the water purifier cartridge 6 can be replaced. Is detachably screwed.

The water purifier cartridge 6 has a double-cylinder structure in which an inlet a and an outlet b of the raw water are formed adjacent to each other to form a U-shaped flow path, which is an inlet side of the raw water. The outer cylinder 6a is filled with activated carbon 8 for removing residual chlorine, and the inner cylinder 6b, which is the outlet side of the purified water, is filled with a filter 9 made of chemical fiber for removing contaminants. In order to prevent the activated carbon 8 from flowing out, an activated carbon outflow prevention member 10 such as felt is provided on the inlet side of the raw water.

Reference numeral 11 denotes a band-shaped decorative member for concealing the seam, which is installed by recessing a part of the fitting portions of the outer cases 4 and 5, 12 is a spread preventing ring of the outer cases 4 and 5, and 13 is the outer case 4 , 5 are connected by metal screws to the valve housing component 14 described later by the pin-shaped members c and d connected to the outer cases 4 and 5, respectively. Is becoming The valve chamber constituting member 14 constitutes a cylindrical valve chamber A whose one end side is open. As shown in FIG. 4, the valve chamber constituting member 14 projects above the opening 15 formed in the outer case 4 on the upper side. Part side male screw cylinder part 16 and lower side male screw cylinder part 18 projecting below the opening 17 opened in the lower side outer case 5 are concentrically connected to each other, and inside the bottom part A square shaft 19 is projected on the side.

The male threaded cylinder portion 16 on the upper side of the above is connected by a union nut 23 through a metal pressure reducing member 20 each having a water passage hole, a packing 21 and a ring-shaped faucet locking member 22. It is engaged and connected to the faucet 3 of the faucet 2, and an inlet chamber B of raw water for tap water is formed at the lower side of the pressure reducing member 20. A valve seat passage 24 that connects the raw water introducing chamber B to the valve chamber A is provided on the bottom side of the valve chamber constituting member 14. The depressurizing member 20 is supported by a step portion f on the inner surface of the tubular portion and a U-shaped receiving member 25.

On the other hand, the male screw cylinder portion 18 on the lower side fits and holds a raw water discharge member 26 in which a straight outlet chamber C _{1 for} raw water and an annular shower outlet chamber C ₂ are formed. A metal valve seat 27 having valve seat passages h and i for communicating ₁ and C ₂ with the valve chamber A is provided. Reference numeral 28 denotes a shower member screwed to the male screw cylinder portion 16 on the lower side via an O-ring 29, which has a straight flow passage hole j and a shower fine hole m and is formed on the peripheral portion. The outer casings 4 and 5 are pressed against the valve chamber constituting member 14 by the flange portion n and the lock nut 30 screwed to the male screw cylinder portion 16 on the upper side. That is, although a large number of screws are generally used to connect the outer cases 4 and 5, the number of screws to be used is increased by providing the flange n and the lock nut 30 to connect the outer cases 4 and 5. Is reduced (one in the illustrated example).

Reference numeral 31 denotes a straightening wire mesh facing the straight outlet chamber C _1. Maintenance for the clogging of the straightening wire mesh 31 and the shower holes m is performed by removing the shower member 28. By the way, when the flange portion n of the shower member 28 is used for connecting the outer casings 4 and 5, the shower member 28 is firmly screwed to the male screw cylinder portion 18, so that the shower member 28 is assembled. It is difficult to easily remove 28 manually. In consideration of this, a plurality of finger rests r (for example, six at 60 ° intervals) are formed on the periphery of the shower member 28, and the shower member 28 can be manually operated without using a special tool. It can be removed.

Reference numeral 32 is a raw water introducing member for purifying water from the valve chamber constituting member 14 to the water purifier cartridge 6, and the raw water introducing member 32 communicates with the outlet b of the water purifier cartridge 6 and a lower side outer case. 5, a purified water lead-out member 33 protruding downward is integrally formed, and as shown in FIG. 2, the raw water introducing member 32 is fixed to the outer case 5 on the lower side by a screw 34.

Next, 35 is a tubular valve shaft provided with O-rings 36 and 37 for the valve body and water stop at both ends, and the longitudinal intermediate portion is accompanied by the axial movement of the valve shaft 35. A spherical valve 38 made of metal, which alternately closes the flow paths h and i of the valve seat 27, is movably held, and the straight lead-out chamber C is caused by the water pressure applied to the ball valve 38 through the water pressure introducing passage 39. ₁ or the shower guide chamber C ₂ is configured to be closed.

A square hole 40 for fitting the square shaft 19 projecting from the valve chamber constituting member 14 is formed inside one cylinder of the valve shaft 35, and two cylinders are formed inside the other cylinder. The ridge spiral body 41 is formed. Reference numeral 42 denotes an operation knob which is rotatably locked and held at one end side of the valve chamber constituent member 14, and a shaft body 44 having a spiral groove 43 for screwing the ridge spiral body 41 formed therein is serrated and fitted. There is. In addition, all the constituent members are made of synthetic resin unless otherwise specified.

According to the above configuration, the ridge spiral body 41 of the valve shaft 35, which is slid only in the axial direction with respect to the valve chamber constituting member 14, is fitted to and held by the operation knob 41. Since the spiral groove 43 is screwed, the valve shaft 35 moves only in the axial direction in accordance with the rotation operation of the operation knob 41. That is, as shown in FIG. 5, a first position in which the raw water introducing chamber B communicates with the water purifying chamber A ₁ of the valve chamber A through the valve seat channel 24, and as shown in FIG. A _second position in which the body 36 crosses the valve seat flow path 24 and the raw water introducing chamber B communicates with the straight outlet chamber C ₁ through the raw water outlet chamber A ₂ of the valve chamber A, and further, as shown in FIG. The raw water introducing chamber B is configured to be switchable between the raw water introducing chamber A ₂ of the valve chamber A and the third position communicating with the shower introducing chamber C ₂ .

Under the switching of the valve shaft 35 to the second position, the floating spherical valve 38 receives the water pressure and closes the flow passage i of the valve seat 27, so that the raw water is discharged from the straight outlet chamber C _1. While being discharged straight through the straight flow passage hole j, the spherical valve 38 closes the flow passage h of the valve seat 27 under the switching of the valve shaft 35 to the third position, and the raw water is discharged from the shower outlet chamber C _2. The shower is discharged through the shower pores m.

In the water purifier having such a configuration, in order to discharge the purified water through the water purifier cartridge 6, as shown in FIG. 5, the valve shaft 35 is switched to the first position and the faucet 2 is opened. When the valve is opened, the water flow load of the water purifier cartridge 6 is large, so that the shock stress due to water pressure is applied to the valve shaft 35 in the switching direction from the second position to the first position. There is a risk of failure or damage to the valve shaft operating portion such as the connecting portion between the shaft 35 and the operating knob 41 and the holding portion of the operating knob 41 with respect to the valve chamber constituent member 14.

In order to eliminate such inconvenience, a screw-type position regulating means 45 for regulating the movement of the valve shaft 35 in the axial direction due to the water pressure while switching the valve shaft 35 to the first position is provided. It is provided. As shown in FIGS. 3 and 4, the position restricting means 45 has a state in which the valve body mounting member connected to the valve shaft 35 is used as a stopper member 46 and the valve shaft 35 is switched to the first position. Then, a screw-type position regulating member 47 that comes into contact with the stopper member 46 is screwed from the raw water introducing chamber B side to the wall portion of the valve chamber constituent member 14 via an O-ring 48 for stopping water. , When the faucet 2 is opened in a state where the valve shaft 35 is switched to the first position, the screw-type position regulating member 47 prevents the stress due to the shocking water pressure from being applied to the valve shaft 35. The valve chamber constituting member 14 is configured to receive it.

According to this configuration, the connection between the valve shaft 35 and the operation knob 41, the holding portion of the operation knob 41 with respect to the valve chamber constituent member 14, and the like are not subjected to excessive stress due to water pressure, and the valve shaft operation portion is All related failures and damages will be eliminated. Then, as the position regulating member 47, it is conceivable to integrally form this with the valve chamber constituting member 14 made of synthetic resin. However, in this case, the molding die becomes complicated and the molding cost becomes high, or the molding itself becomes impossible depending on the configuration of the valve chamber constituting member 14. In view of this point, in the present invention, since the position regulating member 47 is of a screw type, the valve chamber constituting member 14 can be formed at low cost in the conventional manner without any problems in forming.

[0019]

[Effect of the device]

 As described above, according to the present invention, the shocking stress generated when the purified water is discharged is received by the valve chamber constituent member, so that the valve shaft operating portion such as the connecting portion between the valve shaft and the operating knob is not damaged or broken. The situation can be surely prevented. Further, since the position restricting means for this purpose is configured as a screw type, there is no problem in forming the member forming the valve chamber, and the technology for adding the position restricting means having a simple structure as a whole is provided. The problems at the time of taking out purified water can be solved without increasing the cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a water purifier attached to a faucet of a faucet.

FIG. 2 is a cross-sectional plan view of the water purifier.

FIG. 3 is an exploded perspective view of a water purifier.

FIG. 4 is a cross-sectional view of a main part of the water purifier.

FIG. 5 is an explanatory view of purified water extraction with the valve shaft switched to the first position.

FIG. 6 is an explanatory diagram for extracting straight raw water in which the valve shaft is switched to the second position.

FIG. 7 is an explanatory view of taking out the raw shower water with the valve shaft switched to the third position.

[Explanation of symbols]

35 ... Valve shaft, 36 ... Valve body, 47 ... Screw type position regulating member, A ...
Valve room, A ₁ ... water purification room, A ₂ ... raw water discharge room, B ... raw water introduction room.

Claims (1)

[Scope of utility model registration request] 1. A valve shaft provided with a valve body is provided in the valve chamber so as to be switchable between a first position for communicating the raw water introduction chamber with the water purification chamber and a second position for communicating with the raw water discharge chamber. A screw-type position restricting member that restricts movement of the valve shaft in the axial direction due to water pressure is screwed from the raw water introducing chamber side to the wall of the valve chamber while the shaft is switched to the first position. A valve mechanism of a water purifier characterized by that.