WO2011067819A1 - 金属製切換コック - Google Patents
金属製切換コック Download PDFInfo
- Publication number
- WO2011067819A1 WO2011067819A1 PCT/JP2009/006623 JP2009006623W WO2011067819A1 WO 2011067819 A1 WO2011067819 A1 WO 2011067819A1 JP 2009006623 W JP2009006623 W JP 2009006623W WO 2011067819 A1 WO2011067819 A1 WO 2011067819A1
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- WO
- WIPO (PCT)
- Prior art keywords
- valve seat
- valve
- main body
- water outlet
- diameter
- Prior art date
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
Definitions
- the present invention relates to a metal switching cock, and more particularly to a metal switching cock that performs a valve switching operation between two water discharge modes of a raw water discharge mode (raw water straight water discharge mode) and a purified water discharge mode.
- Patent Document 1 discloses a ceramic disk switching valve used with a water treatment device.
- the switching valve includes a movable disk that is sandwiched between two fixed disks.
- the movable disk rotates between a first position for discharging the untreated water stream straightly, a second position for shower discharging the untreated water stream, and a third position for discharging the treated water stream. Is done.
- the switching valve causes a water flow to flow from the secondary outlet toward the water treatment device, the treated water returns to the switching valve via the secondary inlet, and is discharged from the switching valve via the treated water outlet.
- both the secondary inlet and the secondary outlet are watertightly blocked by the ceramic disk.
- the ceramic disc type switching valve is shown in FIG.
- the ceramic disc type switching valve is shown in FIG.
- the present invention can reduce the total number of parts to make the whole structure relatively simple and relatively low cost, and particularly secure sufficient strength around the switching parts.
- a metal switching cock that exhibits high operational stability, can easily perform valve switching operations, and can easily replace switching components when necessary. The issue is to provide
- the metal switching cock according to the present invention includes a metal main body.
- the main body has a first water inlet, a first water outlet, a second water inlet and a second water outlet, and the first water inlet, the first water outlet, the second water inlet and the second water outlet.
- a hollow shape having an internal space communicating with each of the two water outlets.
- a first valve seat is provided in the middle of the first flow path that communicates the first water inlet and the first water outlet.
- a second valve seat is provided in the middle of the second flow path that connects the first water inlet and the second water outlet.
- the first valve seat and the second valve seat are provided, for example, on a plane extending in the axial direction of the first flow path.
- the first valve seat and the second valve seat are provided on a plane extending substantially orthogonal to a portion of the second flow path extending in the axial direction of the second water outlet, for example.
- a switching member is attached to the main body.
- the switching member has a shaft portion and a valve body.
- the shaft portion is disposed so as to extend along a third flow path connecting the first valve seat and the second valve seat in the internal space of the main body.
- the shaft portion extends, for example, so as to be coaxial with the third flow path.
- the valve body is fixed to the tip of the shaft portion. The switching member can be switched between the first valve position and the second valve position.
- the shaft portion In the first valve position, the shaft portion is linearly reciprocated along the third flow path by rotating the shaft portion forward and backward in the circumferential direction thereof, and the first valve body moves the first portion. And the second valve seat is closed. At this time, the valve body maintains the communication of the first flow path, allows water to flow from the first water flow inlet to the first water flow outlet, and blocks the communication of the second flow path. The communication of the second flow path is cut off, and the flow of water from the first water flow inlet to the second water flow outlet is cut off. In the second valve position, the valve body closes the first valve seat and opens the second valve seat.
- the valve body maintains the communication of the second flow path to allow water to flow from the first water flow inlet to the second water flow outlet, and blocks the communication of the first flow path.
- the flow of water from the first water inlet to the first water outlet is blocked.
- the metal switching cock is made of a metal body, and the overall strength is increased by switching the valve position as described above by rotating the shaft portion of the switching member forward and backward.
- stable valve switching operation can be achieved even by repeated use, and the life can be extended.
- the main body is integrally formed by forging into a predetermined hollow shape having a first valve seat and the like inside using a forging metal such as forging brass as a material, thereby switching the valve by a switching member. The strength of the mechanism portion can be greatly increased.
- the main body further has a metal mounting portion.
- the attachment portion is disposed on the opposite side across the second water outlet and the internal space.
- the first valve seat and the second valve seat are arranged along the diameter direction of the main body connecting the second water outlet and the mounting portion. That is, the first valve seat and the second valve seat are arranged so as to be coaxial with the second water outlet and the attachment portion.
- the switching member has a metal handle attached by screwing to the attachment portion. Further, the switching member has the base end of the shaft portion attached to the handle. The base end of the shaft portion is detachably fixed to the center portion of the inner surface of the handle, for example, by press fitting or screwing.
- the mounting portion is formed with a multi-threaded screw (one of the male screws) (including any thread having two or more threads, such as a double-threaded screw or a triple-threaded screw), and the handle has a large number of the mounting portions.
- a multi-thread is formed that is threadedly engaged with the thread (the other being the female thread).
- the lead of the multi-thread screw is such that the valve body of the switching member is the first when the handle of the switching member is rotated at a predetermined angle (for example, a predetermined angle within a range of about 200 degrees to about 220).
- the mounting portion is arranged on the opposite side of the main body in the radial direction, that is, at a position away from the main body by an angle of 180 degrees so as to be substantially coaxial with the second water inlet and project outward from the main body.
- the attachment portion may be configured to have a cylindrical shape that is coaxial with the second water outlet and have a thread portion (female screw or male screw) on the inner peripheral surface or the outer peripheral surface.
- the strength can be greatly improved, and the mounting portion can greatly contribute to the improvement of the strength of the switching valve mechanism.
- the shaft portion and the valve body of the switching member are preferably made of metal in order to improve the strength of the switching valve mechanism.
- the handle is made small (by a factor of 1 / twice of the number of threads of the multiple threads with respect to the single threads) by using a multiple thread such as a double thread instead of a single thread as the handle screwing structure to the mounting portion.
- the switching member By rotating the rotation member by a rotation angle (for example, in the case of a double thread, it is only rotated at a rotation angle that is half that of a normal single thread), the switching member is moved to the first valve seat position and the second valve seat position. Can be rotated and switched between, and the switching operation of the valve position by rotating operation can be facilitated and accelerated by that amount (by the magnification according to the number of strips), and can be performed smoothly and quickly. There is no need to turn it twice.
- a rotation angle for example, in the case of a double thread, it is only rotated at a rotation angle that is half that of a normal single thread
- the shaft portion of the switching member extends coaxially with the third flow path connecting the first valve seat and the second valve seat.
- the shaft portion has, for example, a cylindrical shape extending linearly.
- the attachment portion extends coaxially with the second water outlet and is integrally formed with the main body (preferably by forging) so as to form a cylindrical shape having a diameter substantially equal to or larger than the diameter of the second water outlet. Has been. Thereby, sufficient intensity
- the main body is arranged at a position that is approximately 180 degrees apart from the second water outlet.
- a cylindrical nipple is formed separately from the main body and is detachably attached to the second water outlet of the main body.
- the base end of the shaft portion of the switching member is detachably attached to the handle, and the valve element has a disk shape smaller in diameter than the diameter of the second water outlet.
- the shaft and the valve body are moved in the axial direction so as to be separated from the handle (for example, in an integrated state), and the handle
- the shaft can be removed from the second water outlet to the outside, and the shaft and the valve body are inserted (for example, in an integrated state) from the second water outlet of the main body and moved in the axial direction toward the handle.
- the base end of the shaft portion is fitted to the handle to be freely attached.
- the main part (shaft part and valve body) of the switching valve mechanism can be easily attached and detached, and the O-ring or the like as a sealing member attached to the valve body is worn with the valve switching operation for a long period of time. Even if it becomes necessary to replace the O-ring, etc., it is easy to replace the O-ring as a consumable part and continue to use the switching cock with the same operational stability and reliability as before. Can be achieved.
- the main body further includes a substantially cylindrical main shaft portion extending from the first water inlet to the first water outlet.
- the attachment portion is provided on one side of the main shaft portion in the diameter direction so as to protrude in the diameter direction of the main shaft portion.
- the second water outlet is provided on the other side in the diametrical direction so as to have a cylindrical shape that is coaxial with the mounting portion and protrudes in the diametrical direction of the main shaft portion.
- the second water inflow port is provided on the first water outflow side on the other side in the diametrical direction so as to protrude in the diameter direction of the main shaft portion in parallel with the second water outflow port.
- the second water inflow is provided on the side closer to the first water outlet than the first water inlet with the second water outlet interposed therebetween.
- An upstream communication hole directly connected to the first valve seat, and a downstream communication hole directly connected to a third flow path between the first valve seat and the second valve seat on the downstream side of the first valve seat and the second valve seat Are arranged in a positional relationship such that they are positioned on the opposite side of the radial direction with the axis of the main shaft portion interposed therebetween.
- the upstream communication hole and the downstream communication hole are staggered with the axis of the main shaft portion interposed therebetween, that is, (substantially crank-shaped or substantially Z-shaped when viewed in a cross section cut along the axis.
- the main shaft portion, the mounting portion, the second water outlet, the second water inlet, the first valve seat and the first The body comprising the two valve seats is integrally formed with the above-described shape or the arrangement of each part and each space, and thus the body is forged into a predetermined shape integrally having each part and each space.
- the overall strength, particularly the strength of the mounting portion for mounting the switching valve mechanism can be improved, and the operational stability and operational reliability can be greatly improved.
- the seating surface of the second valve seat is further on an axis connecting the first water inlet and the first water outlet (on the same axis as the axis of the main shaft portion).
- the main body is integrally formed so as to be positioned at (1). As described above, the position of the seating surface of the second valve seat is on the axis of the main shaft portion, so that the body can be easily formed by forging or the like.
- the seat surface of the first valve seat is further spaced from the center of the main shaft portion toward the second water outlet side by the radius of the main shaft portion (second).
- the main body is integrally formed so as to be located at the base end position of the water outlet.
- the position of the seating surface of the first valve seat is set to the base end position of the second water outlet, so that it is easier to integrally form the main body by forging or the like.
- the second valve seat is integrally formed at the proximal end of the nipple, and is disposed at a predetermined position by mounting the nipple on the second water outlet of the main body. It has come to be. That is, the second valve seat is not formed integrally with the main body like the first valve seat, but is formed separately from the main body and is detachably attached to the secondary outlet portion of the main body. Can be formed. As described above, when the second valve seat is formed integrally with the main body, when the second valve seat is disposed opposite to the first valve seat, the first valve is inserted through the second water outlet.
- the outer diameter of the seating surface of the first valve seat of the main body is the same as or slightly smaller than the inner diameter of the second water outlet.
- the outer diameter of the seating surface of the first valve seat is slightly larger than the diameter of the large-diameter portion when the mounting portion is a stepped columnar shape including a large-diameter portion and a small-diameter portion.
- the inner diameter of the seating surface of the valve seat 1 is the same as the diameter of the large diameter portion of the mounting portion.
- the overall number of parts can be reduced to make the overall structure relatively simple, and the cost can be relatively low.
- the strength around the switching component is sufficiently secured to exhibit high operational stability, and the valve switching operation can be easily performed.
- FIG. 1 is a front view showing a metal switching cock according to an embodiment of the present invention.
- FIG. 2 is a rear view showing the metal switching cock according to the embodiment of the present invention.
- FIG. 3 is a right side view showing a metal switching cock according to an embodiment of the present invention.
- FIG. 4 is a left side view showing a metal switching cock according to an embodiment of the present invention.
- FIG. 5 is a plan view showing a metal switching cock according to an embodiment of the present invention.
- FIG. 6 is a bottom view showing a state where the foam inner core is removed from the secondary outlet portion of the metal switching cock according to the embodiment of the present invention.
- FIG. 7 is a bottom view showing a metal switching cock according to an embodiment of the present invention.
- FIG. 1 is a front view showing a metal switching cock according to an embodiment of the present invention.
- FIG. 2 is a rear view showing the metal switching cock according to the embodiment of the present invention.
- FIG. 3 is
- FIG. 8 is a cross-sectional view showing the internal flow path by cutting the metal switching cock according to the embodiment of the present invention, and shows the positional relationship between the valve body and the valve seat and the water flow direction at the first valve position.
- FIG. 9 is a cross-sectional view showing an internal flow path by cutting the metal switching cock according to the embodiment of the present invention, and shows the positional relationship between the valve body and the valve seat and the water flow direction at the second valve position.
- FIG. 10 is an enlarged front view showing a double thread portion of the mounting portion while showing a state in which the handle of the switching member of the metallic switching cock according to the embodiment of the present invention is removed from the mounting portion of the main body.
- FIG. 11 is a partially exploded perspective view showing the state in which the nipple of the metal switching cock according to the embodiment of the present invention is removed from the secondary outlet portion of the main body as viewed from the upper right.
- FIG. 12 is a partially exploded perspective view showing a state where a nipple of a metal switching cock according to an embodiment of the present invention is removed from a secondary outlet portion of the main body and a valve mechanism such as a valve body inside the main body is taken out from the main body. is there.
- FIG. 13 is a perspective view showing the appearance of the metal switching cock according to the embodiment of the present invention as seen from the upper right (handle side).
- FIG. 14 is a perspective view showing the appearance of the metal switching cock according to the embodiment of the present invention as seen from the upper left (nipple side).
- FIG. 15 is a perspective view showing the appearance of the metal switching cock according to the embodiment of the present invention as viewed from the lower right.
- FIG. 16 is a perspective view showing the appearance of the metal switching cock according to the embodiment of the present invention as seen from the lower left.
- the metal switching cock includes a main body 10.
- the main body 10 includes main shaft portions 11 to 13 in which a base portion 11, a primary inlet portion 12, and a primary outlet portion 13 are integrally formed in a substantially cylindrical shape as a whole.
- the base portion 11 constitutes the axial center portion of the main shaft portion
- the primary inlet portion 12 constitutes one axial end portion (upstream end portion) of the main shaft portion
- the primary outlet portion 13 constitutes the other axial end portion of the main shaft portion ( Downstream end).
- the circular opening as the opening end of the primary inlet portion 12 constitutes a primary inlet (first water inlet) for introducing raw water. Further, a female screw for mounting a foam inner core, which will be described later, is threaded on the inner peripheral surface of the primary outlet portion 13. The circular opening as the opening end of the primary outlet portion 13 constitutes a primary outlet (first water outlet) for discharging raw water.
- the secondary outlet portion 14 is integrally formed on one end side (upstream end side) of the base portion 11 in the main shaft portions 11 to 13 so as to protrude orthogonally.
- the secondary outlet portion 14 has a short cylindrical shape, and a female screw for mounting a nipple described later is threaded on the inner peripheral surface thereof.
- the circular opening as the opening end of the secondary outlet portion 14 constitutes a secondary outlet (second water outlet) for supplying raw water to an external water treatment device such as a water purifier.
- the secondary inlet 15 is integrally formed on the other end side (downstream end side) of the base 11 so as to protrude orthogonally.
- the secondary inlet portion 15 has a substantially short cylindrical shape with a step formed by a base end portion 15a having a large-diameter substantially cylindrical shape and a tip end portion 15b as a water inlet portion having a smaller diameter than the base end portion 15a. There is no.
- a small-diameter water passage hole is formed along the axial center of the base end portion 15a and the tip end portion 15b.
- a circular opening-shaped secondary inlet (second water inlet) serving as an opening end of the secondary inlet portion is configured by the opening end (open end of the water passage hole) of the tip portion 15b.
- a male screw for mounting a secondary inlet nut which will be described later, is threaded on the outer peripheral surface of the base end portion 15a.
- tip part 15b has the same outer diameter as the internal diameter of the front-end
- a cylindrical tertiary outlet portion 16 is integrally formed on the base end portion 15a of the secondary inlet portion 15 so as to protrude perpendicularly downward.
- the secondary inlet 15 and the tertiary outlet 16 are generally L-shaped as a whole, and are integrally formed with the other end (downstream end) of the base 11.
- the circular opening as the opening end of the tertiary outlet portion 16 constitutes a tertiary outlet (third water outlet) that discharges treated water (such as purified water from a water purifier) from the external water treatment device.
- a rectifier 16 b made of synthetic resin having a cross-shaped cross section is provided via a stainless steel strainer 16 a (disposed on the base end side). 16 are arranged to extend in the axial direction.
- a cylindrical mounting portion 17 is integrally formed on one end portion (upstream end portion) of the base portion 11 on the opposite side to the secondary outlet portion 14 (position at an angular interval of 180 degrees) so as to protrude orthogonally. ing.
- a double thread (male screw) 17 a for attaching a handle and reciprocating in the axial direction by screwing (screwing / screwing), which will be described later, is screwed.
- the mounting portion 17 has a cylindrical shape with a diameter substantially the same as a nipple described later, and an inner diameter (a diameter of the cylindrical space) is smaller than an inner diameter of the secondary outlet portion 14.
- a step is formed in the vicinity of the axial center of the cylindrical space of the mounting portion 17 so that the substantially half portion on the proximal end side of the cylindrical space is a cylindrical large diameter portion having a slightly larger diameter, and the substantially half portion on the distal end side. Is a small cylindrical portion having a slightly small diameter.
- the position upstream of the secondary outlet portion 14 more specifically, the position immediately upstream of the secondary outlet portion 14 (the boundary portion between the primary inlet portion 12 and the base portion 11) is upstream.
- the side partition 18 is integrally formed so as to extend in a direction orthogonal to the axial direction of the main shaft portions 11 to 13.
- a circular upstream communication hole 18 a is formed through one side of the upstream partition wall 18 in the radial direction (secondary outlet portion side).
- the downstream partition wall 19 is integrally formed to extend in a direction orthogonal to the axial direction of the main shaft portions 11 to 13 and substantially parallel to the upstream partition wall 18.
- a downstream side communication hole 19a having a substantially 8 shape in which two circular shapes are continuous is formed.
- the first valve seat 21 is a valve seat for blocking a first flow path (primary flow path), which will be described later, and has a circular annular single-stepped seating surface.
- the first valve seat 21 is arranged in parallel (on a plane extending in the axial direction of the first flow path) in the axial direction of the main shaft portions 11 to 13 or along the first flow path. That is, the first valve seat 21 is disposed on the mounting portion 17 side in the axial direction of the cylindrical communication space that connects the secondary outlet portion 14 and the mounting portion 17.
- the first valve seat 21 has an outer diameter larger than that of the cylindrical communication space (by the width of the circular annular step portion). Specifically, the inner diameter of the seating surface of the first valve seat 21 is the same as the diameter of the large diameter portion of the mounting portion 17, and the outer diameter is the inner diameter of the secondary outlet portion 14 (of the mounting portion 17.
- a press portion (punch) having a corresponding diameter is inserted from the secondary outlet portion 14 into the internal space of the main body 10.
- the seating surface of the first valve seat 21 can be formed by forging.
- a second valve seat 22 is provided between the other side (outer peripheral edge side) of the upstream side communication hole of the upstream side partition wall and the other side of the downstream side partition wall (outer peripheral edge side on the side opposite to the downstream side communication hole in the radial direction). It is arranged.
- the second valve seat 22 is a valve seat for blocking a second flow path (secondary flow path), which will be described later, and has a circular annular two-stage seating surface. Further, the second valve seat 22 is arranged in parallel with the axial direction of the main shaft portions 11 to 13 along the first flow path (on a plane extending in the axial direction of the first flow path), so that the first valve seat 22 21 is arranged so as to extend in parallel with 21.
- the second valve seat 22 is disposed on a plane orthogonal to the second flow path at a portion of the second flow path that is orthogonal to the first flow path. Further, the second valve seat 22 is disposed on the secondary outlet portion 14 side in the axial direction of the cylindrical communication space connecting the secondary outlet portion 14 and the mounting portion 17.
- the main body 10 is obtained by integrally forming the main shaft portions 11 to 13, the secondary outlet portion 14, the secondary inlet portion 15, the tertiary outlet portion 16, and the mounting portion 17 so as to have the shape and arrangement described above.
- the forging brass is integrally formed by forging the brass for forging into a shape including the above-described members or portions and the flow paths or spaces or recesses.
- the second valve seat 22 is not formed integrally with the main body 10 like the first valve seat 21, but is formed separately from the main body 10 so as to be secondary to the main body 10. It is integrally formed at the base end of a nipple 40 that is detachably attached to the outlet portion 14, and is arranged at the predetermined position by attaching the nipple 40 to the main body 10.
- the nipple 40 as a flow path forming member for the secondary outlet has a stepped cylindrical shape (so-called nipple shape) including a base end portion 41, a central portion 42, a tip end portion 43 and a water supply portion 44. .
- the base end portion 41 has a cylindrical shape with the same outer diameter as the inner diameter of the secondary outlet portion 14, and a male screw that engages with a female screw on the inner peripheral surface of the secondary outlet portion 14 is formed on the outer peripheral surface thereof. Yes. Then, the male screw of the base end portion 41 of the nipple 40 is screwed into and retracted from the female screw of the secondary outlet portion 14 of the main body 10 so that the nipple 40 can be attached to and detached from the main body 10 via the O-ring R. The water tightness is maintained by the mounting and the O-ring R.
- the central portion 42 of the nipple 40 has a cylindrical shape having a larger diameter than the base end portion 41 (the same outer diameter as the outer diameter of the secondary outlet portion 14).
- the outer peripheral surface is knurled for the purpose of preventing slipping.
- the distal end portion 43 has a cylindrical shape having the same diameter as that of the proximal end portion 41, and a male screw is formed on the outer peripheral surface thereof.
- the water supply part 44 has a cylindrical shape with a smaller diameter than the distal end part 43, and has the same outer diameter as that of the base end part of a water supply pipe (such as a hose) for supplying raw water to an external water treatment device such as a water purifier. It has a diameter so that the proximal end of the water supply pipe can be freely mounted.
- the second valve seat 22 has a large-diameter circular annular seating surface constituted by the base end surface of the nipple 40 and a small diameter integrally formed on the inner side of the large-diameter seating surface (inner side of the nipple 40). And a two-step stepped seating surface comprising a circular annular seating surface.
- the large-diameter seating surface has a circular ring shape having the same diameter (inner diameter and outer diameter) as the seating surface of the first valve seat 21, and the nipple 40 is screwed into the secondary outlet portion 14 of the main body 10 to completely By mounting, the second valve seat 22 is arranged at a predetermined position in the internal space of the main body 10, that is, at a position facing the first valve seat 21.
- a nut 51 for a secondary outlet is attached to the tip portion 43 of the nipple 40.
- the nut 51 has a nut shape (for so-called nipple) in which an internal thread is formed on the inner peripheral surface to be engaged with the male thread at the distal end portion 43 of the nipple 40.
- the nut 51 is externally fitted to the front end portion 43 of the nipple 40 and screwed in, so that the water supply pipe is connected between the nut 51 and the water supply portion 44.
- the proximal end portion is sandwiched and fixed.
- a secondary inlet nut 52 having the same configuration as the nut 51 is attached to the distal end portion 15 b of the secondary inlet portion 15 of the main body 10.
- the nut 52 has a nut shape in which an internal thread is formed on the inner peripheral surface of the main thread 10 to be engaged with the male thread of the base end portion 15 a of the secondary inlet portion 15 of the main body 10.
- the internal space of the main body 10 has a first flow path P1, a second flow path P2, and a third flow path P3.
- the first flow path P1 constitutes a primary flow path, and extends from the primary inlet 12 to the primary outlet 13 through the upstream communication hole 18a of the upstream partition 18 and the downstream communication hole 19a of the downstream partition 19. It is a road.
- the second flow path P2 constitutes a secondary flow path, and passes through the upstream communication hole 18a of the upstream partition 18 from the primary inlet section 12 (so as to be orthogonal to the first flow path P1), and the secondary outlet section 14.
- the flow path extends to Note that the upstream side of the second flow path P2 overlaps with a part of the first flow path P1.
- the third flow path P3 is a space between the first valve seat 21 and the second valve seat 2 in the cylindrical communication space that connects the secondary outlet portion 14 and the mounting portion 17, A flow path connecting the first valve seat 21 and the second valve seat 2 is formed. Note that the entire third flow path P3 overlaps with a part of the first flow path P1.
- a color ring 61 is detachably fitted to the primary inlet 12 of the main body 10.
- the switching cock is attached to the faucet in a watertight manner.
- a stainless steel strainer 63 is detachably disposed in the primary inlet 12 of the main body 10.
- a foam inner core 65 is attached to the primary outlet 13 of the main body 10. That is, by screwing the male screw on the outer peripheral surface of the foam inner core 65 with the female screw of the primary outlet portion 13, the foam inner core 65 is detachably attached to the primary outlet portion 13.
- the water discharge is designed to be foam water discharge.
- the switching member 70 includes a valve member including a shaft portion 71, a valve body 72, and a fitting portion 73, and a handle 74 for operating the valve members 71 to 73.
- the shaft portion 71 has a stepped columnar shape including a large diameter portion 71a and a small diameter portion 71b.
- the large-diameter portion 71a has a cylindrical shape having the same diameter as the inner diameter of the small-diameter portion of the mounting portion 17, and an annular groove is formed at the tip (boundary portion with the small-diameter portion), and an O-ring is formed in the annular groove R is attached, and the O-ring R is elastically brought into contact with the inner peripheral surface of the small diameter portion of the communication hole of the mounting portion 17 to maintain watertightness.
- the small diameter part 71b is a columnar shape having a smaller diameter than the large diameter part.
- the valve body 72 is integrally formed at the tip of the small diameter portion of the shaft portion 71. It is also possible to form the valve body 72 separately and to fix it integrally to the tip of the shaft portion 71.
- the valve body 72 has a large diameter portion 72a and a pair of small diameter portions 72b.
- the large-diameter portion 72a is composed of a large-diameter disk-shaped portion at the center in the axial direction of the valve body 72, and constitutes a central seating portion.
- the large diameter portion 72 a has the same diameter as the outer diameter of the seating surface of the first valve seat 21 and the outer diameter of the large seating surface of the second valve seat 22.
- the large-diameter portion 72a is seated on the large-diameter seating surface of the second valve seat 22 at a first valve position (an opening position of the first flow path and a blocking position of the second flow path) described later.
- each small-diameter portion 72b is a small-diameter disk-shaped portion at the base end and the distal end in the axial direction of the valve body, and has a slightly smaller diameter than the large-diameter portion.
- the small-diameter portion 72b on the distal end side constitutes a seating portion that sits on the small-diameter seating surface of the second valve seat 22 at the first valve position.
- each small diameter portion 72b has the same diameter and the same diameter as the inner diameter of the seating surface of the first valve seat 21 and the inner diameter of the larger diameter seating surface of the second valve seat 22.
- An annular groove is formed between each small diameter portion 72b and the large diameter portion 72a, and an O-ring R is attached to each annular groove.
- the O-ring R on the distal end side of the valve body 72 is elastically applied to an annular surface (outer peripheral surface) between the large-diameter seating surface and the small-diameter seating surface of the second valve seat 22.
- the O-ring R on the proximal end side of the valve body 72 is attached to the mounting portion 17 at the second valve position while maintaining water tightness (blocking state of the second flow path P2) at the first valve position.
- the inner space of the large-diameter portion of the communication space is elastically brought into contact with the second valve position to maintain water tightness (the first channel P1 is shut off).
- the diameter of the large-diameter portion of the cylindrical space of the mounting portion 17 is the same as the outer diameter of the small-diameter portion 72b on the proximal end side of the valve body 72 of the switching member 70, and the cylinder of the mounting portion 17
- the diameter of the small-diameter portion of the shape space is slightly smaller than the outer diameter of the small-diameter portion 72 b of the valve body 72 of the switching member 70.
- the diameter of the large-diameter portion of the cylindrical space of the mounting portion 17 is slightly smaller than the outer diameter of the large-diameter portion 72a at the center of the valve body 72.
- the handle 74 has a bottomed cylindrical shape that is attached to the mounting portion 17 of the main body 10 in an overview.
- a double thread (female thread) 74a that engages with a double thread (male thread) 17a of the mounting portion 17 is threaded.
- a circular insertion hole 74b is formed through the center of the bottom wall of the handle 74, and a fitting recess 74c having a larger diameter than the insertion hole 74b is formed at the center of the inner surface of the bottom wall. It is formed to be concentric with 74b.
- the fitting portion 73 of the switching member 70 is integrally formed with the base end of the shaft portion 71.
- the fitting portion 73 and the fitting concave portion 74c of the handle 74 have the same outer shape.
- the valve bodies 71 to 73 are formed. It is attached to the handle 74 so as not to rotate.
- a female screw is threaded on the end surface of the fitting portion 73.
- the stop screw 75 is inserted into the insertion hole 74 b of the handle 74 and screwed into the female screw of the fitting portion 73, so that the valve bodies 71 to 73 cannot be prevented from being axially removed from the handle 74. It is fixed as follows.
- the switching member 70 rotates by rotating the handle 74 forward and backward in the circumferential direction (clockwise direction or counterclockwise direction). 71 linearly advances or retracts (reciprocates) along the third flow path P3, and between the first valve position (valve position in FIG. 8) and the second valve position (valve position in FIG. 9).
- the valve switching operation is performed at In the first valve position, the first valve seat 21 is opened by the valve body 72 and the second valve seat 22 is closed, and the communication of the first flow path P1 is maintained, and the primary inlet 12 is primary.
- the first valve seat 21 is closed by the valve body 72 and the second valve seat 22 is opened to maintain the communication of the second flow path P2, and from the primary inlet to the second valve seat 22. While permitting the flow of water to the next outlet, the communication of the first flow path P1 is blocked, and the flow of water from the primary inlet to the primary outlet is blocked.
- the double thread 17a of the mounting portion 17 of the main body 10 and the double thread 74a of the handle 74 are such that the handle 74 of the switching member 70 has a predetermined angle within a range of about 45 degrees to about 360 degrees.
- the valve body 72 is reciprocated between the first valve position and the second valve position by rotating forward and backward by a predetermined angle within a range of about 200 degrees to about 220 degrees.
- the lead (twice the pitch) is set.
- the lead 1 (or pitch p) of the double thread 17a and the double thread 74a is such that when the handle 74 is rotated by a user's finger at a predetermined angle, the valve body 72 of the switching member 70 is the first valve.
- a value that moves linearly between the position and the second valve position Is set to
- the double thread 17a and the lead 1 of the double thread 74a rotate the valve body 72 forward and backward by a predetermined angle within a range of about 200 degrees to about 220 degrees, which is an angle at which the handle 74 can be smoothly rotated by fingers. Most preferably, it is set to a value that reciprocates between the first valve position and the second valve position.
- the double thread 17a includes a first screw thread 17a1 having a substantially trapezoidal cross section (a portion shown by shading or painting in FIG.
- the first screw thread 17a1 has a rounding range from the start end to the end of over about 360 degrees.
- the second screw thread 17a2 has a turning range from the start end to the end of over 180 degrees.
- the start end position or the end position of the second screw thread 17a2 is set to a position that is rotated about 90 degrees from the start end position or the end position of the first screw thread 17a1. Accordingly, the handle 74 is rotated between the first valve position and the second valve position by rotating the handle 74 by about 1 pitch p (about 1/2 lead 1) of the double thread 17a. It can be moved forward or backward in the direction. 10 shows only the double thread 17a of the mounting portion 17, the double thread of the handle 74 has the same configuration.
- the shaft portion 71 and the valve body 72 of the switching member 70 can be taken out from the inside of the main body 10 to be exchanged. It has become. More specifically, when the nipple 40 is screwed out of the secondary outlet portion 14 and removed from the main body 10, access to the shaft portion 71 and the valve body 72 inside the main body 10 is achieved through the circular opening of the secondary outlet portion 14. It becomes possible.
- the nipple 40, nuts 51 and 52, coloring ring 61, foam inner core 65, and switching member 70 are made of, for example, free-cutting brass. It is formed into the above shape by cutting.
- the metal switching cock of the present embodiment is mounted and fixed in a watertight manner to the faucet by attaching the coloring ring 61 to the water outlet of the faucet through the packing 62.
- the raw water flows from the color ring 61 through the strainer 63 to the inside of the main body 10 through the primary inlet.
- the handle 74 of the switching member 70 is rotated in the clockwise direction (for example, rotated to the right end position of the rotation angle range ⁇ in FIG. 3) to be the first valve position.
- 72 is arranged at the position shown in FIG.
- the large diameter portion 72a of the valve body 72 is seated on the large diameter seating surface of the first valve seat 21, and the small diameter portion 72b on the distal end side is seated on the small diameter seating surface of the first valve seat, and
- the O-ring R between them is elastically in close contact with the peripheral surface between both seating surfaces of the first valve seat 21, and the upstream side of the first valve seat 21 (first flow path P1) and Between the downstream side (the flow path of the internal space of the nipple 40 in the second flow path P2) is shut off in a watertight manner.
- a predetermined clearance space or communication space is formed between the entire valve element 72 including the proximal-side small-diameter portion 72 b and the second valve seat 22.
- the switching member 70 opens the first valve seat 21 by the valve body 72 and closes the second valve seat 22 to maintain the communication of the first flow path P1.
- the flow of water from the primary inlet of the primary inlet portion 12 to the primary outlet of the primary outlet portion 13 is allowed, and the communication of the second flow path P2 is blocked, so that the secondary inlet portion 14 is connected to the secondary outlet portion 14.
- Shut off the water flow to the next outlet Thereby, the raw water from the water faucet flows from the primary inlet to the primary outlet through the first flow path P1, and is foamed and discharged by the foam core 65 in the primary outlet.
- the first valve position is a raw water discharge mode in which the raw water is discharged straight (foam water discharge).
- the valve body is set. 72 is arranged at the position shown in FIG. Then, the large-diameter portion 72a and the small-diameter portion 72b at the tip of the valve body 72 are separated from the large-diameter seating surface and the small-diameter seating surface of the first valve seat 21, and the sealing of the first valve seat 21 by them is performed. Canceled.
- the large-diameter portion 72 a of the valve body 72 is seated on the seating surface of the second valve seat 22, and the small-diameter portion 72 b on the base end side is within the peripheral surface of the large-diameter portion of the communication space of the mounting portion 17.
- the O-ring R disposed between them is elastically in close contact with the peripheral surface of the large-diameter portion of the communication space of the mounting portion 17, so that the upstream side of the second valve seat 22 (second flow path). ) And the downstream side (the space on the downstream side of the downstream partition wall 19 in the first flow path P1) in a watertight manner.
- a predetermined clearance space or communication space is formed between the valve body 72 and the second valve seat 22.
- the switching member 70 opens the second valve seat 22 by the valve body 72 and closes the first valve seat 21 to maintain the communication of the second flow path P2.
- the flow of water from the primary inlet of the primary inlet portion 12 to the secondary outlet of the secondary outlet portion 14 is allowed, and the communication of the first flow path P1 is blocked, and the primary outlet portion 13 Shut off the water flow to the primary outlet.
- the raw water from the water faucet flows from the primary inlet through the second flow path P2 to the flow path in the nipple 40 from the secondary outlet, and from the front end opening of the water supply section 44 at the front end of the nipple 40 through the water supply pipe. Water is supplied to an external water treatment device.
- the raw water is again fed from the distal end opening of the distal end portion 15b of the secondary inlet portion 15 of the main body to the secondary inlet portion 15 by the water supply pipe. Flows into the interior.
- the treated water further passes through the strainer 16a in the tertiary outlet portion 16 and is discharged from the tertiary outlet while being rectified by the rectifier 16b.
- the second valve position is a treated water discharge mode (typically a purified water discharge mode) for discharging treated water (purified water or the like).
- the metal switching cock according to the present embodiment exhibits the following specific effects. That is, the conventional metal switching cock is manufactured entirely from metal except for a sealing material such as an O-ring, and the main body 10 constituting the main part is formed by forging brass for forging, The structure of each space is integrally formed.
- a conventional metal switching cock is generally formed by joining a plurality of metal pieces with an adhesive to assemble each flow path having a complicated flow path shape as described above in the body of the switching cock. It is the structure to form. Therefore, in the case of the structure of the conventional metal switching cock, the metal pieces joined to each other may be damaged or decomposed by an external force.
- the structural parts as the main parts are all made of metal, while the main body 10 is formed of an integral metal body by forging, and is the first part.
- the flow path P1 is provided. That is, the main body 10 forms the outline of the first flow path P1 and the like by forging, and finally finishes only a small portion of the surface by post-processing such as cutting or drilling, so that each flow path P1 and the like are processed. Forming. Therefore, there is no inconvenience such as the respective components such as the first flow path P1 in the main body 10 being damaged and disassembled by the external force.
- a nipple 40 made of metal that has undergone another manufacturing stage (cutting of free-cutting brass) is detachably attached to the secondary outlet for supplying water to the external water treatment device, and the second flow path P2. Is configured. Therefore, it is possible to replace the nipple 40 alone as the second valve seat formed on the nipple 40 is worn, and by removing the nipple 40 from the main body 10, an O-ring R which is a consumable part. Even if the performance deteriorates, the O-ring R can be easily replaced.
- the double thread 17a, 74a is formed on the mounting portion 17 and the handle 74, respectively, so that the handle 74 can be rotated at a small rotation angle.
- the valve body 72 can be smoothly and quickly switched between the first valve position and the second valve position simply by doing so. That is, since the double thread 17a, 74a moves in the axial direction twice or more than the normal single thread, the handle 74 is moved by a certain rotation angle in the valve opening / closing operation (flow path switching operation) by the switching valve mechanism. It is sufficient to rotate.
- the shaft portion 71 which is the rotation shaft of the switching valve mechanism moves back and forth in the axial direction at a relatively slow speed in accordance with the small rotation of the double thread screws 17a and 74a, the shaft portion 72 is reciprocated many times. There is almost no damage. Further, by performing knurling on the outer peripheral surface of the central portion 42 of the nipple 40, the operation of attaching or removing the nipple 40 to or from the secondary outlet portion 14 becomes easy.
- the metal switching cock according to one embodiment of the present invention is a flow path of raw water between a first mode for discharging raw water and a second mode for discharging treated water from an external water treatment device such as purified water. It can be applied to various metal switching cocks for switching between.
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
Description
本実施の形態の金属製切換コックは、カラーリング61をパッキン62を介して給水栓の吐水口に装着することで、切換コックを給水栓に水密に装着固定する。この状態で、給水栓を開栓してその吐水口から金属製切換コックの本体10に原水を給水すると、その原水は、カラーリング61からストレーナ63を経て、本体10の一次入口から内部に流入する。このとき、切換部材70のハンドル74を時計回り方向に回動して(例えば、図3中の回動角度範囲θの右端位置まで回転して)第1の弁位置とすることにより、弁体72が図8に示す位置に配置される。すると、弁体72の大径部72aが第1の弁座21の大径の着座面に着座すると共に、先端側の小径部72bが第1の弁座の小径の着座面に着座し、かつ、それらの間のOリングRが第1の弁座21の両着座面の間の周面に弾性的に密接して、第1の弁座21の上流側(第1の流路P1)と下流側(第2の流路P2のうちニップル40の内部空間の流路)との間を水密に遮断する。一方、基端側の小径部72bを含む弁体72の全体と第2の弁座22との間には所定の隙間空間乃至連通空間が形成される。したがって、切換部材70は、この第1の弁位置では、弁体72により第1の弁座21を開放すると共に第2の弁座22を閉塞し、第1の流路P1の連通を維持して、一次入口部12の一次入口から一次出口部13の一次出口への水の流通を許容すると共に、第2の流路P2の連通を遮断して、一次入口から二次出口部14の二次出口への水の流通を遮断する。これにより、給水栓からの原水は、一次入口から第1の流路P1を経て一次出口へ流動し、一次出口内の泡沫内芯65により泡沫化されて吐出される。なお、第1の弁位置は、原水をストレート吐水(泡沫吐水)する原水吐水モードとなる。
11~13 主軸部
11 基部
12 一次入口部
13 一次出口部
14 二次出口部
15 二次入口部
15a 基端部
15b 先端部
16 三次出口部
16a ストレーナ
16b 整流器
17 取付部
17a 二条螺子
18 上流側隔壁
18a 上流側連通孔
19 下流側隔壁
19a 下流側連通孔
21 第1の弁座
22 第2の弁座
40 ニップル
41 基端部
42 中央部
43 先端部
44 給水部
51 ナット
52 ナット
61 カラーリング
62 パッキン
63 ストレーナ
65 泡沫内芯
70 切換部材
71 軸部
71a 大径部
71b 小径部
72 弁体
72a 大径部
72b 小径部
73 嵌合部
74 ハンドル
74a 二条螺子(多条螺子)
74b 挿通孔
74c 嵌合凹部
75 ビス
l リード
p ピッチ
P1 第1の流路
P2 第2の流路
P3 第3の流路
R Oリング
θ 回動角度範囲
Claims (9)
- 第1の水流入口、第1の水流出口、第2の水流入口及び第2の水流出口を有すると共に、前記第1の水流入口、第1の水流出口、第2の水流入口及び第2の水流出口の各々と連通する内部空間を有する中空状をなす金属製の本体と、
前記本体の内部空間において前記第1の水流入口と前記第1の水流出口とを連通する第1の流路の途中に設けられた第1の弁座と、
前記本体の内部空間において前記第1の水流入口と前記第2の水流出口とを連通する第2の流路の途中に設けられた第2の弁座と、
前記本体に装着された切換部材とを備え、
前記切換部材は、
前記本体の内部空間において前記第1の弁座と前記第2の弁座とを結ぶ第3の流路に沿って延びるよう配設された軸部と、
当該軸部の先端に固着された弁体とを有し、
前記軸部をその周方向に正逆回転することにより、前記第3の流路に沿って前記軸部を直線的に往復移動して、前記弁体により前記第1の弁座を開放すると共に前記第2の弁座を閉塞する第1の弁位置と、前記弁体により前記第1の弁座を閉塞すると共に前記第2の弁座を開放する第2の弁位置との間で切換自在とされたことを特徴とする金属製切換コック。 - 前記本体は、前記第2の水流出口と前記内部空間を挟んで反対側に配設された金属製の取付部を有すると共に、前記第2の水流出口と前記取付部とを結ぶ前記本体の直径方向に沿って前記第1の弁座及び前記第2の弁座を配置し、
前記切換部材は、前記取付部に螺合して取り付けられた金属製のハンドルを有すると共に、前記軸部の基端を前記ハンドルに取り付け、
前記取付部に多条螺子を形成すると共に、前記ハンドルに前記取付部の多条螺子と螺合する多条螺子を形成し、かつ、前記多条螺子のリードを、前記切換部材のハンドルを所定角度で回転したときに前記切換部材の弁体が前記第1の弁座位置と前記第2の弁座位置との間で移動する値に設定したことを特徴とする請求項1記載の金属製切換コック。 - 前記切換部材の軸部は、前記第1の弁座と第2の弁座とを結ぶ前記第3の流路と同軸状に延び、
前記取付部は前記第2の水流出口と同軸状に延びると共に、前記第2の水流出口の口径と略同一径または大径の円筒状をなすよう前記本体に一体形成されていることを特徴とする請求項2記載の金属製切換コック。 - 前記本体は、前記第2の水流出口と取付部を略180度離間した位置に配置し、
更に、前記本体とは別体形成されて前記本体の第2の水流出口に着脱自在に取り付けられる円筒状のニップルを備え、
前記切換部材の軸部の基端は、前記ハンドルに着脱自在に取り付けられると共に、前記弁体は、前記第2の水流出口の口径より小径の円盤状をなし、
前記ニップルを前記本体の第2の水流出口から取り外すことにより、前記軸部及び弁体を前記ハンドルから離間するよう軸方向に移動して、前記ハンドルの第2の水流出口から外部に取り出し自在とすると共に、前記本体の第2の水流出口から前記軸部及び弁体を挿入して前記ハンドルに向かって軸方向に移動することにより前記軸部の基端を前記ハンドルに嵌合して取り付け自在としたことを特徴とする請求項2または3記載の金属製切換コック。 - 前記本体は、前記第1の水流入口から前記第1の水流出口へと延びる略円筒状の主軸部を有し、
前記取付部は、前記主軸部の直径方向一側において当該主軸部の直径方向に突出する円筒状となるよう設けられ、
前記第2の水流出口は、前記直径方向他側において前記取付部と同軸上となって前記主軸部の直径方向に突出する円筒状となるよう設けられ、
前記第2の水流入口は、前記直径方向他側における前記第1の水流出口側において前記第2の水流出口と平行となって前記主軸部の直径方向に突出する円筒状となるよう設けられ、
前記主軸部の内部には、前記第1の流路のうち前記第1の弁座及び第2の弁座の上流側で当該第1の弁座及び第2の弁座間の第3の流路に直結する上流側連通孔と、前記第1の弁座及び第2の弁座の下流側で当該第1の弁座及び第2の弁座間の第3の流路に直結する下流側連通孔とが、前記主軸部の軸心を間に挟んで放射方向の反対側に位置するような位置関係で配置され、
鍛造用黄銅を鍛造することにより、前記主軸部、前記取付部、前記第2の水流出口、前記第2の水流入口、前記第1の弁座及び前記第2の弁座からなる前記本体を一体形成したことを特徴とする請求項2乃至4のいずれか1項記載の金属製切換コック。 - 前記第2の弁座の着座面が前記第1の水流入口と前記第1の水流出口とを結ぶ軸心上に位置するよう、前記本体を一体形成したことを特徴とする請求項5記載の金属製切換コック。
- 前記第1の弁座の座面が前記主軸部の半径分だけ前記主軸部の中心から前記第2の水流出口側に離間した位置に位置するよう、前記本体を一体形成したことを特徴とする請求項6記載の金属製切換コック。
- 前記第2の弁座は、前記ニップルの基端に一体形成され、前記ニップルを前記本体の第2の水流出口に装着することで所定位置に配置されるようになっている請求項4記載の金属製切換コック。
- 前記本体の第1の弁座の着座面の外径は、前記第2の水流出口の内径と同一径または若干小さな直径とされていることを特徴とする請求項5または6記載の金属製切換コック。
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CN200980163261.2A CN102686919B (zh) | 2009-12-04 | 2009-12-04 | 金属制切换旋塞 |
PCT/JP2009/006623 WO2011067819A1 (ja) | 2009-12-04 | 2009-12-04 | 金属製切換コック |
JP2009554814A JP5059883B2 (ja) | 2009-12-04 | 2009-12-04 | 金属製切換コック |
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PCT/JP2009/006623 WO2011067819A1 (ja) | 2009-12-04 | 2009-12-04 | 金属製切換コック |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6287794U (ja) * | 1985-11-22 | 1987-06-04 | ||
JPH029488A (ja) * | 1988-06-28 | 1990-01-12 | Ube Ind Ltd | 水浄化装置 |
JPH04203680A (ja) * | 1990-11-30 | 1992-07-24 | Ube Ind Ltd | 切換装置 |
JPH07308666A (ja) * | 1994-05-18 | 1995-11-28 | Mitsubishi Rayon Co Ltd | 蛇口直結型浄水器 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5275201A (en) * | 1992-07-23 | 1994-01-04 | Tri-Clover, Inc. | Manifold valve assembly with removable valve seat |
JP3590765B2 (ja) * | 2000-12-21 | 2004-11-17 | Smc株式会社 | 電磁弁 |
-
2009
- 2009-12-04 JP JP2009554814A patent/JP5059883B2/ja not_active Expired - Fee Related
- 2009-12-04 CN CN200980163261.2A patent/CN102686919B/zh not_active Expired - Fee Related
- 2009-12-04 WO PCT/JP2009/006623 patent/WO2011067819A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6287794U (ja) * | 1985-11-22 | 1987-06-04 | ||
JPH029488A (ja) * | 1988-06-28 | 1990-01-12 | Ube Ind Ltd | 水浄化装置 |
JPH04203680A (ja) * | 1990-11-30 | 1992-07-24 | Ube Ind Ltd | 切換装置 |
JPH07308666A (ja) * | 1994-05-18 | 1995-11-28 | Mitsubishi Rayon Co Ltd | 蛇口直結型浄水器 |
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JPWO2011067819A1 (ja) | 2013-04-18 |
CN102686919B (zh) | 2014-08-06 |
JP5059883B2 (ja) | 2012-10-31 |
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