JPH0649878A - Ball tap for reservoir - Google Patents

Abstract

PURPOSE:To prevent the lowering of the buoyancy of a float and to maintain the normal motion of the float for a long term. CONSTITUTION:A water supply pipe 5 is led out of a faucet body 4. A float 2 is attached to the water supply pipe 5 so as to be vertically movable with the water supply pipe 5 used as a guide. A shaft 6 which is arranged in about parallel to the water supply pipe 5 and vertically movable is attached to the upper part of the float 2. An arm 7 to execute the switching of a pilot valve 3 is protrudingly provided from the pilot valve 3 provided in the faucet body 4. The arm 7 and the upper part of the shaft 6 are mutually rotatably connected. The faucet body 4 is provided with an air supply port 40 to mix air in supply water supplied into the water supply pipe 5 at the time of supplying water to the water supply pipe 5. A cavity 2a for an air reservoir is provided inside the float 2. The lower part of the float 2 is provided with an opening part 2b opened downward so as to receive air bubble discharged from the water supply pipe 5 with supplied water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water tank ball tap, and more particularly to a pilot type water tank ball tap.

[0002]

2. Description of the Related Art Conventionally, various types of ball taps for water tanks provided in the water tank 1 have been provided.
For example, there is one as shown in FIG. This one is equipped with a pilot valve 3 which is opened and closed by a float 2 floating on the water surface in a water tank 1 in the front part of the faucet body 4.
A pilot valve 3 is provided at a rear end of an arm 7 that extends forward by pivoting a rear part to a water tap body 4, and a float 2 formed in a substantially spherical shape is attached to a front part of the arm 7 by screwing. It has a structure. Then, as the water level in the water tank 1 fluctuates, the float 2 moves up and down while performing a rotational movement about the shaft attachment portion of the arm, whereby the pilot valve 3
Is opened and closed to automatically supply water into the water storage tank 1.

[0003]

By the way, in order to give buoyancy to the float 2, it is necessary to make it completely sealed so that water does not enter inside. When water splashes or the like enter the inside of the float 2 and accumulate inside the float 2, the weight of the float becomes heavier, and the float does not float on the water in the water tank 1 to serve its purpose. In addition, when it is in a completely sealed state, the air inside the float 2 repeatedly expands and contracts due to temperature changes, etc., so that a gap is created in the water seal part of the float 2,
There has been a problem that a crack is generated in the body of the float 2 and water enters the inside of the float 2 and the float 2 does not operate normally.

Therefore, the applicant of the present invention has considered a structure having a float 2 which moves up and down with a water supply pipe 5 hanging from a water supply tap body 4 as a guide, as shown in FIG. The float 2 slidably attached to the water supply pipe 5 is provided with a hollow portion 2a inside and has a lower open state, and buoyancy is exerted on the float 2 by the air present in the hollow portion 2a. The buoyancy can be given without the need for the float 2 to have a sealed structure.

However, in this structure, when the float 2 is submerged in water, the air in the cavity 2a is compressed by water pressure as shown in FIG. 10, the volume is reduced, and the size of the float 2 is reduced. On the contrary, there is a problem that the buoyancy becomes small, and when the water surface in the water storage tank 1 becomes wavy as shown in FIG. 11, the amount of air existing in the cavity 2a becomes small and the buoyancy becomes small. There was a problem of becoming.

The present invention is intended to solve the above problems, and an object of the present invention is to provide a ball tap for a water tank capable of maintaining normal operation of a float for a long period of time without lowering the buoyancy of the float. is there.

[0007]

According to the present invention, in order to achieve the above object, a pilot valve 3 having a pilot valve 3 which is opened and closed by a float 2 floating near a water surface in a water tank 1 is provided in a faucet body 4. In the water tank ball tap, the water supply pipe 5 whose tip extends to the vicinity of the bottom of the water storage tank 1 and is opened is led out from the water supply tap main body 4, and the water supply pipe 5 is used as a guide so as to be vertically movable. Attach the float 2,
A vertically movable shaft 6 arranged substantially parallel to the water supply pipe 5 is attached to the upper part of the float 2, and an arm 7 for opening and closing the pilot valve 3 from a pilot valve 3 provided in the water supply tap body 4 is provided.
An air supply port for rotatably connecting the arm 7 and the upper part of the shaft 6 to mix air in the supply water supplied into the water supply pipe 5 when supplying water to the water supply pipe 5. 40
Is provided in the faucet body 4, a cavity 2a for accumulating air is provided in the inside of the float 2, and is opened downward in the lower part of the float 2 so as to receive bubbles discharged together with the water supplied from the water supply pipe 5. The opening 2b is provided.

[0008]

The float 2 moves up and down along the water supply pipe 5 as the water level in the water tank 1 fluctuates. When the water in the water tank 1 is used and the water level drops, the float 2 moves. When the float 2 descends, the shaft 6 descends, the arm 7 connected to the shaft 6 is pulled, the pilot valve 3 opens, and water is supplied from the water supply pipe 5 into the water tank 1. Further, when the water level in the water tank 1 rises as water is supplied, the float 2 moves the water supply pipe 5 due to the rise of the water level.
Along the shaft 6 by the rise of the float 2.
, The arm 7 connected to the shaft 6 returns to the normal position, the pilot valve 3 is closed, and water supply to the water tank 1 is stopped. When water is supplied from the water supply pipe 5, air is mixed in the water supplied from the air supply port 40 into the water supply pipe 5 due to the ejector effect, and the air is discharged from the water supply pipe 5 together with the supply water. The float 2 vertically moves by moving up and down along the water supply pipe 5, and the air discharged together with the supply water from the water supply pipe 5 is a cavity inside the float 2 from the opening 2b. 2a
The air is accumulated in the cavities 2a and is accumulated in the cavity 2a.
Since the buoyancy is applied to the float 2, a predetermined buoyancy can be applied to the float 2 without using a sealed structure.

[0009]

The present invention will be described below in detail based on the illustrated embodiments. The water tank ball tap housed and arranged in the water tank 1 has a water tap main body 4 as shown in FIGS. 1 and 2.
And a shaft 6 connected to a pilot valve 3 provided on the water faucet body 4 via an arm 7 and a water supply pipe 5 hanging from the water faucet body 4 and connected and fixed to the shaft 6. The main body is composed of the float 2.

As shown in FIG. 2, the water faucet body 4 has a water supply part 18 and a water discharge part 19, and a water passage 20 for connecting them.
It is composed of and. Further, the faucet main body 4 is provided with an opening 21 communicating with the water passage 20 at a front end thereof, and a main valve seat 22 concentric with the opening 21 and having a smaller diameter than the opening 21 is provided. 21 is closed by the main valve body 24. The lid 23 is fixed by a cap nut 25 screwed to the outer periphery of the opening 21, and the main valve body 24 is sandwiched between the lid 23 and the opening 21 relative to the main valve seat 22. There is. Here, the main valve body 24 is formed of an elastic member such as a rubber plate.
The lid 23 is formed in a concave shape toward the main valve body 24, and a pressure chamber 26 is formed behind the main valve body 24. Further, a small-diameter pilot hole 27 is formed in the lid 23, the pressure chamber 26 and the outside of the water faucet body 4 are communicated with each other through the pilot hole 27, and the pilot hole 27 is formed.
The pilot valve seat 28 is formed at the opening edge portion of the lid 23 on the outer surface side thereof in a protruding state. Further, the lid 23 is provided with an arm attachment portion 29 having a pair of support pieces 29a facing each other with the pilot valve seat 28 interposed therebetween on the outer surface portion thereof. To the upper end of the arm 7 between the support pieces 29a, and the pilot valve seat 2 is provided on the front end surface below the shaft attachment portion 30.
8 is provided with a pilot valve body 31, and the movement of the arm 7 opens and closes the pilot valve 3. The arm 7 temporarily extends laterally from the arm attachment portion 29 so as to wrap around the water faucet body 4, then extends rearward, and is connected to the shaft 6 via a connection pin 32 as shown in FIG. 1. A shaft 6 arranged substantially parallel to the water supply pipe 5 is vertically movably inserted into an end portion of a float 2 attached to the water supply pipe 5, and an upper portion thereof is rotatable with an end portion of an arm 7 by a connecting pin 32. Are linked to. As shown in FIG. 5, an air supply port 40 is formed in the lower part of the water tap main body 4 so as to communicate with the water supply pipe 5 hanging from the water tap main body 4. The air supply port 40 communicates with the upper part of the water supply pipe 5 through a communication space 41 provided in the lower part of the water faucet body 4. Here, the communication space 41 is formed obliquely upward so that the supply water supplied from the faucet body 4 to the water supply pipe 5 flows backward and flows out from the air supply port 40 as much as possible. . When water is supplied from the water tap main body 4 to the water supply pipe 5, air is drawn into the communication space 41 from the air supply port 40 by the supply water flowing vigorously from the water tap main body 4 toward the water supply pipe 5. Air is mixed in the supply water supplied into the water supply pipe 5, and the air is discharged from the water supply pipe 5 together with the supply water.

The shaft 6 formed of a square bar is provided with a plurality of engaging portions 8 in a vertical multi-step manner at predetermined intervals along the longitudinal direction of the shaft 6. The locking portion 8 is formed by forming through holes 8a in a vertical multistage manner so as to be orthogonal to the longitudinal direction of the shaft 6. In the illustrated embodiment, the shaft 6 is shown to be formed by a square bar material, but the shaft 6 is not limited to this and may be formed by a round bar material. It may be

As shown in FIG. 5, the float 2 is formed in a box shape having an open lower surface, and has a hollow portion 2a provided inside and an opening portion 2 opened downward at the lower portion.
b is provided. Here, the float 2 slidably attached to the water supply pipe 5 is attached to the water supply pipe 5 so as to be able to receive bubbles discharged with the water supply from the water supply pipe 5 as shown in FIG. Installed. Float 2
A water supply pipe insertion hole 33 through which the water supply pipe 5 hanging from the water supply tap body 4 is inserted is provided at the end of the water supply pipe main body 4, and the water supply pipe insertion hole 33 is provided in the vicinity of the water supply pipe insertion hole 33. A recessed groove 11a into which the shaft 6 is inserted is provided as a recess, and this recessed groove 11a
The shaft insertion hole 11 is formed by. Float 2
Has a substantially flat upper surface except for a part thereof, and a pair of protrusions 9 are formed upward from the opening edge at the upper end of the concave groove 11a.
a is projected. Each projection 9a is provided with a locking hole 12 having substantially the same diameter as the through hole 8a formed in the shaft 6.

A clip 10 for connecting and fixing the float 2 and the shaft 6 is provided with a substrate 14 and a substrate 1 as shown in FIG.
The main body is composed of a locking rod 15 projecting from one end of 4 and a side plate 17 projecting approximately the same length as the locking rod 15 so as to be substantially parallel to the locking rod 15. An inclined portion 34 is provided on the inner side surface of the tip of the side plate 17, and the locking claw 16 is provided at the tip of the side plate 17 by the inclined portion 34. In the clip 10, the locking rod 15 has a locking hole 12 formed in the protrusion 9a and a through hole 8a formed in the shaft 6.
And the locking claw 16 is locked to the locking projection 13 provided on the other projection 9a so that the float 2 and the shaft 6 can be attached to the projection 9a. Here, the locking hole 12 of the protrusion 9a and the through hole 8a of the shaft 6 are aligned with each other so that the locking rod 1 is inserted into the locking hole 12 and the through hole 8a.
The shaft 6 and the float 2 are clipped by inserting the 5 into the clip 1.
Although it is connected by 0, the position of the through hole 8a to be aligned with the locking hole 12 of the projection 9a is selected at an arbitrary position to match the position of the locking hole 12,
By inserting the locking rod 15 into the through hole 8a and the locking hole 12, the height position of the float 2 can be set to an arbitrary height position.

When changing the height position of the float 2, the float 2 is held at an arbitrary height, and in this state, the locking hole 12 of the protrusion 9a and the through hole 8a of the shaft 6 are aligned with each other. The locking rod 15 of the clip 10 is inserted into the through hole 8a and the locking hole 12, and the locking claw 16 of the side plate 17 is locked to the locking projection 13 provided on the projection 9a, so that the clip 10 is attached to the float 2. The shaft 6 can be connected and fixed. Then, by connecting and fixing the float 2 and the shaft 6 with the clip 10 at the portion of the through hole 8a located on the lower side of the shaft 6, the height position of the float 2 can be lowered,
As a result, the water level in the water tank 1 can be set low, and the clip 2 connects the float 2 and the shaft 6 with the clip 10 at the portion of the through hole 8a located on the upper side of the shaft 6. By fixing the float 2, the height position of the float 2 can be increased, whereby the water level in the water storage tank 1 can be set high.

When the water level in the water storage tank 1 is lowered and the float 2 is lowered, the arm 7 is rotated to open the pilot valve 3 to start water supply. Further, the water level is raised and the float 2 is moved. When the arm 7 returns to its original position due to the buoyancy, the pilot valve 7 is closed and water supply is stopped. Here, although the lower portion of the float 2 is open, it is configured to vertically move up and down along the water supply pipe 5, so that air is constantly supplied to the internal cavity 2a. In addition, the bubbles are discharged from the water supply pipe 5 as the water is supplied from the water supply pipe 5, and the air bubbles are discharged from the water supply pipe 5 into the cavity 2a. It has a high buoyancy. Further, with this structure, the float 2 can be provided with a predetermined buoyancy force even if the float 2 does not have a sealed structure, and the increase in weight and the temperature change due to the infiltration of water like a conventional sealed float. The breakage problem is solved, and the float 2 having high reliability can be obtained. Further, in the illustrated embodiment, the float 2 is shown as a rectangular parallelepiped with curved corners, but the present invention is not limited to this, and the cavity 2 when the float 2 is submerged.
Other shapes may be used as long as the air in a does not leak out and water does not remain in the cavity 2a when the water level drops. Further, although the water supply pipe 5 is used as a guide for vertically moving the float 2 vertically, it may be configured to vertically move vertically using the shaft 6 as a guide. Further, as shown in FIG. 6, if the reinforcing rib 2c is provided in the opening 2b, the strength of the main body of the float 2 can be improved.

The operation of the above ball tap is basically the same as that of the conventional pilot type ball tap, but as will be described in detail with reference to FIG. 5, the water supply section 18 is located at the back of the section D near the center in FIG. The water bent to the left in the section is the main valve body 24
It passes through the gap E between the main valve seat 22 and the main valve seat 22, flows as shown by the arrow, and is supplied from the water supply pipe 5 into the water tank 1. Here, a part of the water passes through the diaphragm hole 35 and passes through the pressure chamber 2
6 is filled and also goes out from the pilot hole 27.

Now, the pilot hole 27 is formed in the pilot valve body 3
When closed by 1, the pressure in the pressure chamber 26 rises, and the main valve body 24 is pressed rightward on the paper surface. This eliminates the gap E and stops the flow of water in the direction of the arrow. Here, the pressure chamber 2
Although the pressure between 6 and the upstream portion D is the same because they are communicated with each other by the diaphragm hole 35, the main valve body 24
The main valve element 24 is pressed against the right side of the drawing because the areas that act on the valve are different.

Next, when the pilot hole 27 is opened, the water in the pressure chamber 26 is drained from the diaphragm hole 35 and the pressure in the pressure chamber 26 drops, so that the main valve body 24 is pushed to the left in the drawing, and the gap E is secured. To be done. Therefore, when the water supply to the water tank 1 is almost completed and the float 2 rises and the pilot valve 3 closes the pilot hole 27, the water discharge from the water supply pipe 5 is stopped, and the water in the water tank 1 is used. When it disappears, the float 2 is lowered and the pilot hole 27 is opened to supply water from the water supply pipe 5 into the water tank 1.

[0019]

As described above, according to the present invention, the water supply pipe whose tip extends to the vicinity of the bottom of the water storage tank and is opened is led out from the water supply tap main body, and the water supply pipe is vertically movable with the water supply pipe as a guide. The float is attached to the upper part of the float, and a vertically movable shaft that is arranged almost parallel to the water supply pipe is attached to the upper part of the float, and an arm for opening and closing the pilot valve is projected from the pilot valve provided on the body of the water tap. The arm and the upper part of the shaft are rotatably connected to each other, and an air supply port for mixing air in the supply water supplied into the water supply pipe at the time of water supply to the water supply pipe is provided in the water supply tap main body. A cavity for air accumulation is provided inside the float, and an opening that opens downward is provided at the bottom of the float so as to receive the bubbles discharged with the water supply from the water supply pipe. Due to the ejector effect during water supply Air is mixed in the water supplied from the air supply port into the water supply pipe, and the air is discharged together with the supply water from the water supply pipe. It collects from the opening in the cavity inside the float, and the buoyancy is given to the float by the air accumulated inside the cavity. It is possible to give a predetermined buoyancy to the float even without adopting a sealed structure, and to change the temperature. The normal operation of the float can be maintained for a long period of time while avoiding damage.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway side view of the above.

FIG. 3 is a side view seen from another direction of the above.

FIG. 4 is a plan view of the above.

FIG. 5 is a cross-sectional view showing an internal structure of the water faucet body of the above.

6 is a cross-sectional view taken along the line AA in FIG.

FIG. 7 shows a float, (a) is a front view,
(B) is a side view, (c) is a plan view, and (d) is a bottom view.

FIG. 8 is a partially cutaway front view of a conventional example.

FIG. 9 is a partially cutaway front view of another conventional example.

10 (a) and 10 (b) are explanatory views for explaining the problems of the conventional example.

11 (a) and 11 (b) are explanatory views for explaining the problems of the conventional example.

[Explanation of symbols]

 1 Water Tank 2 Float 2a Cavity 2b Opening 3 Pilot Valve 4 Water Faucet Main Body 5 Water Supply Pipe 6 Shaft 7 Arm 40 Air Supply Port

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiko Kurita 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (1)

[Claims] 1. A ball tap for a water tank of a pilot type, comprising a pilot valve, which is opened and closed by a float floating near the water surface in a water tank, in a water tap main body, the water supply pipe having a tip extending near the bottom of the water tank and opening. Is attached to the water supply pipe so that it can be moved up and down with the water supply pipe as a guide, and a vertically movable shaft placed almost parallel to the water supply pipe is placed above the float. Attach and attach an arm that opens and closes the pilot valve from the pilot valve provided on the water tap body.The arm and the upper part of the shaft are rotatably connected, and when the water is supplied to the water pipe, the arm is placed inside the water pipe. An air supply port for mixing air in the supply water to be supplied is provided in the main body of the faucet, and a cavity portion for accumulating air is provided inside the float so as to receive bubbles discharged together with the water supply from the water supply pipe. Floating on A ball tap for a water storage tank, characterized in that an opening portion that opens downward is provided at the bottom of the child.