JPS6038785Y2 - Foam flow and direct current manual switching device in faucets - Google Patents

Description

[Detailed explanation of the invention] This invention was published in Utility Model Application No. 52-92490 (Utility Model Application No. 54-1
Regarding the improvement of 9555), the purpose is to eliminate clogging of the water passage hole of the branch valve body due to foreign matter in the fluid and to ensure a stable supply of water in the foam flow.

Conventionally, a switching branch valve body 40 in an automatic switching device that automatically switches between a direct current and a foam flow has a large number of passages penetrating the back surface of the flange 41, as shown in FIG. Water holes 42 were provided, and the fluid was changed into a foam flow through these water holes 42.

With this configuration of the branch valve body 40, especially when there is a lot of foreign matter such as iron powder or small sand in the pipe, such as immediately after piping or after repair work on the water pipe, the foreign matter is likely to get caught in the water passage hole 42 and cause clogging. There was an inconvenience that caused

This invention solves these problems, eliminates the clogging of the water holes by foreign objects, and makes it possible to stably supply a flow rate of foam.

The basic structure of this invention is to have a head that can be attached to the discharge pipe of a faucet and used for foam flow or direct current, and a switching valve that communicates only when direct current is installed in the valve chamber. A saw blade-shaped water passage hole is provided at the periphery of the flange of the branch valve body.

Examples of this invention will be described below with reference to the drawings.

The head 1 is almost horizontally shaped as shown in Figures 1 to 3, A9, and has a connecting part at one end that is inserted into the tip of a discharge pipe 2 of a faucet (not shown) and connected with a bolt 3. 4 and a valve chamber 5, and the other end is provided with a connecting part 4' having a hole 7 communicating with a screw hole 6, and the screw hole 6 has a hole 8 on its upper outer periphery that communicates with the hole 7 and introduces outside air. Screw on the cap 9 with the

The branch valve body 10 is provided with a valve port 11 and a number of water holes 12 formed by saw blade-shaped notches around the valve port 11, and the water holes 1 are provided on the circumferential surface.
A water splashing edge 13 is provided for causing the fluid coming out of the two groups to collide and simultaneously mixing with the sudden air to create a foam flow, and a flow rectifier 14.
4' is provided.

The strainer 15 is constructed by overlapping several meshes on the annular edge 16 inside the mouthpiece 9.

The switching valve 17 has an elbow shape in cross section, and the above-mentioned valve port 11 extends in the axial direction.
A through hole 18 communicating with the discharge pipe 2 and a through hole 19 having a small diameter of about 172 in the discharge pipe 2 are closed facing the inner wall of the head 1 when a foam flow is discharged, and communicate with the discharge pipe 2 only when a direct current is discharged. A knob 21 is attached to the outer end of the valve stem 20.

The annular seat 22 has an inner flange 24 on the inside that supports the moon-shaped flange 23 formed by the group of water holes 12 on the outer periphery of the branch valve body 10, and this annular seat 22 supports a backing 26 on the outer flange 25. It is connected to the inside of the screw hole 6 described above by a cap 9, so that direct current and foam flow can be manually switched by operating a knob 21.

Note that the discharge pipe 2 can be freely replaced with a shower head.

In this invention, when water is supplied from a faucet, fluid flows through the discharge pipe 2 into the head 1 shown in FIG. valve mouth 11
The fluid enters the valve port 11 and passes through the strainer 15 through the rectifier 14 in the branch valve body 10 that passes inside, and then the fluid passes through the rectifier 14 in the base 9 as shown by the arrow to form a direct current to the outside. Supplied by

In this case, some of the fluid trying to flow out to the water hole 12 side has a tapered and extremely narrow flow path and is complicated compared to the high velocity and flow rate of the direct current flowing out from the water hole 19 side. Therefore, a small amount of fluid flows down into the cap 9 along the curved surface of the repelling edge 13 without reaching the flow velocity that creates a foam flow. It will never leak out.

Next, when switching from direct current to foam flow, when the knob 21 is rotated approximately 180 degrees, the through hole 19 rotates 180 degrees from the position shown in FIG. 1 to the position shown in FIG. The fluid rushes from around the switching valve 17 to the water passage hole 12 of the branch valve body 10.

Subsequently, this fluid advances into the ring seat 22 through each water passage hole 12, collides with the repelling edge 13 that faces the inside of the ring seat 22, and flows out into the cap 9 below while rebounding inside.
Due to the rapid flow rate of the fluid, outside air is introduced from the air holes 8 and 7 provided in the middle of the outflow, and the agitation action of this air and fluid changes the fluid into a foam flow, which flows into the strainer 15 and rectifier 14 in the mouthpiece 9. ' and is released to the outside.

This idea incorporates a branch valve body with a saw-blade-shaped water hole around the periphery in the head that is attached to the discharge pipe of faucets, so it can be used immediately after piping or after repair work on water piping. Even if foreign matter such as iron powder or sand is mixed into the fluid inside the pipe, the thick saw blade-shaped water holes allow these foreign matter to pass through and prevent clogging, compared to conventional pipes. This allows for a stable supply of foam.

In addition, since the switching valve can be switched with a single movement of the knob, it is possible to easily switch from direct current to foam flow, thereby saving water even when washing hands for a short time without having to spray excess water.

[Brief explanation of the drawing]

Figure 1 is a side cross-sectional view of the head of this invention attached to the discharge pipe of a faucet when direct current water is being discharged, and Figure 2 is a 9-way outlet. C is an enlarged plan view, partially broken front view and bottom view of the branch valve body, Fig. 3 A is an enlarged plan view and partially broken front view of the ring seat, and Fig. 4 shows the foam flow water discharge procedure. FIG. 5A-9 is an explanatory diagram of the prior art. Explanation of symbols of main parts, 1...Head, 2...
...Discharge pipe, 5...Valve chamber, 6...
Screw hole, 9...cap, 10...branch valve body, 14.14'...rectifier, 17...
Switching valve, 18, 19...Through hole, 20...
・Valve stem, 21... knob, 22... ring seat.

Claims (1)

[Scope of utility model registration request] The valve chamber 5 of the head 1 attached to the discharge pipe 2 of a faucet has a through hole 19 which controls the flow rate by squeezing the valve and which communicates with the discharge pipe 2 only during direct flow. A switching valve 17 is installed inside the switching valve 17 which penetrates in the axial direction through a through hole 18 that communicates with this through hole 19, and a knob 21 on the outside of the head 1 is attached to the valve shaft 20 of the switching valve 17. The water passes through the blade-shaped flange 23 and the water holes 12, which have a valve port 11 inside that communicates only when direct current flows, and have a group of 12 saw-blade-shaped water holes arranged radially on the upper part of the circumferential surface to create a foam flow. Repelling edge 1 that causes the fluid to collide and scatter it around the circumference
3 and a cap 9 having air holes 8 on its circumferential surface for communicating with the outside and sucking air are separately formed, and the branch valve body 10 is connected to the cap by a ring seat 22. By attaching this cap 9 to the screw hole 6 of the head 1, the vent 8 of the cap 9 and the vent 7 of the opening side mouth edge of the head 1 are made to communicate with each other. When the hole 19 is closed by the inner wall of the head 1, the air and liquid sucked from the air holes 7 and 8 are absorbed into the mouthpiece 9 while the fluid is ejected through the water passage hole 12 group and splashed against the rebound edge 13. While mixing inside, the fluid is changed into a foam flow and discharged, and when the knob 21 is operated to open the through hole 19 with the through hole 19 facing the discharge pipe 2 side, the fluid flows through the through hole 1.
9 to 18 and a valve port 11 to pass through the mouthpiece 9 as a direct current, which is discharged as a direct current in faucets.