JPH0544236A - Ball tap for water storage tank - Google Patents

Abstract

PURPOSE:To miniaturize the above ball tap while reducing limitation at the time of installation. CONSTITUTION:A feed pipe 2, a front end of which is extended up to a section near the bottom of a water storage tank 1 and opened, is led out of a faucet body 3. A float 4 is mounted to the feed pipe 2 so as to be freely moved in the vertical direction while using the feed pipe 2 as a guide. A shaft 5 protruded to a section upper than the upper section of the float 4 is inserted into a guide cylinder 6 set up to the faucet body 3. An arm 8 opening and closing a pilot valve 7 is projected from the pilot valve 7 fitted to the faucet body 3. The arm 8 and the shaft 5 projected from the guide cylinder 6 are connected rotatably in the orthogonal direction.

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 storage tanks provided in water storage tanks have been provided, and a representative one is shown in JP-A-60-105724. As shown in FIGS. 8 and 9, this one is equipped with a pilot valve 7 which is opened and closed by a float 4 floating on the water surface in the water tank 1 in the front part of the water faucet body 3, A pilot valve 7 is provided at the rear end of an arm 8 which is pivotally attached to the main body 3 at the rear and extends forward, and a float 4 is provided at the tip of the arm 8. Then, as the water level in the water tank 1 fluctuates, the floating valve 4 moves up and down as shown by the imaginary line in the figure, whereby the pilot valve 7 is opened and closed to automatically supply water to the water tank 1. It is supposed to be.

[0003]

However, in the conventional example as described above, since the float 4 is attached to the front of the water faucet body 3 via the arm 8, the float 4 is provided in front of the water faucet body 3. However, there is a problem that the ball tap itself becomes large in size, and since the arm 8 is axially attached to the water tap main body 3, the water level rises,
As it descends, it makes a rotational movement around the shaft-mounted portion. Therefore, other members within the rotary motion range in front of the water faucet body 3,
For example, the siphon tube 30 and the arm 3 of the cleaning lever 31
2 and members such as a ball chain 33 attached to the arm 32, the float 4 comes into contact with these members to prevent movement,
This hinders normal operation, and there is a problem that the size of the water storage tank 1 and the arrangement of internal members are greatly limited.

The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide a ball tap for a water tank which is compact and has few mounting restrictions.

[0005]

According to the present invention, in order to achieve the above object, a pilot type water tank ball tap having a pilot valve opened and closed by a float floating near the water surface in a water tank In the above, the water supply pipe 2 whose tip extends to the vicinity of the bottom of the water tank 1 and opens is connected to the water tap main body 3.
The float 4 is attached to the water supply pipe 2 so as to be vertically movable by using the water supply pipe 2 as a guide, and the shaft 5 projecting upward from the upper part of the float 4 is provided in the water tap main body 3. An arm 8 which is inserted into the guide cylinder 6 and which opens and closes the pilot valve 7 from the pilot valve 7 provided in the water faucet main body 3, and the arm 8 and the shaft 5 protruding from the guide cylinder 6. Is rotatably connected in a direction orthogonal to each other.

[0006]

However, the float 4 moves up and down along the water supply pipe 2 in accordance with the fluctuation of the water level in the water storage tank 1. When the water in the water storage tank 1 is used and the water level is lowered, the float 4 is moved. As the float 5 descends, the shaft 5 descends and the arm 8 connected to the shaft 5 is pulled to open the pilot valve 7 to supply water from the water supply pipe 2 into the water tank 1. Further, when the water level in the water tank 1 rises as water is supplied, the float 4 causes the water supply pipe 2 to rise due to the rise in the water level.
Along the shaft 5 by the rise of the float 4.
, The arm 8 connected to the shaft 5 returns to the normal position, the pilot valve 7 is closed, and water supply to the water tank 1 is stopped.

[0007]

The present invention will be described below in detail with reference to the illustrated embodiments. FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a sectional view. Reference numeral 3 in the drawing is a water tap body, which is composed of a water supply unit 9, a water discharge unit 10, and a water passage 11 that connects them. In addition, the hydrant body 3
Is provided with an opening 12 communicating with the water passage 11 at a front end thereof, a main valve seat 13 concentric with the opening 12 and having a smaller diameter than the opening 12, and the opening 12 is closed by a lid 14. A main valve body 15 is provided between the lid 14 and the main valve seat 13. The lid 14 is fixed by a cap nut 16 screwed to the outer periphery of the opening 12, and the main valve body 15 is provided between the lid 14 and the opening 12 so that the main valve seat 1
It is clamped relative to 3. Here, the main valve body 1
Reference numeral 5 is formed of an elastic member such as a rubber plate. The lid 14 is formed in a concave shape toward the main valve body 15, and a pressure chamber 17 is formed behind the main valve body 15. Further, a small-diameter pilot hole 18 is formed in the lid 14, the pressure chamber 17 and the outside of the water tap body 3 are communicated with each other through the pilot hole 18, and the pilot hole 18 on the outer surface side of the lid 14 is provided. Pilot valve seat 19 at the opening edge
Are formed in a protruding state. Further, the lid 14 is provided with an arm mounting portion 20 having a pair of support pieces 20a facing each other with the pilot valve seat 19 sandwiched therebetween on the outer surface portion thereof. To the upper end of the arm 8 between the support pieces 20a, and a pilot valve body 22 is provided on the front end face below the shaft attachment portion 21 with respect to the pilot valve seat 19. It is designed to open and close 7. Further, the arm 8 first laterally extends from the arm mounting portion 20 so as to wrap around the water faucet body 3, then extends rearward, and is connected to the shaft 5 via a connection pin 23 as shown in FIG. ..

The shaft 5 moves vertically as the float 4 moves up and down. On the other hand, the arm 8 makes a rotational motion around the shaft attachment portion 21 of the arm attachment portion 20, so that the arm 8 and the shaft are rotated. Reference numeral 5 indicates a state in which it is rotatably connected about the connection pin 23. As shown in FIG. 4, the float 4 is formed in a hollow cylindrical shape, and has a through hole 4a larger in diameter than the water supply pipe 2 on the concentric circle.
The float 4 is attached to the water supply pipe 2 so that the water supply pipe 2 is inserted into the through hole 4 a, and moves up and down along the water supply pipe 2. A shaft 5 projects upward from the upper surface of the float 4, and the upper end of the shaft 5 is rotatably connected and fixed to an arm 8. Here, the rotation of the float 4 is restricted by the guide tube 6 provided in the water faucet body 3 so that the float 4 does not rotate in a horizontal plane with respect to the water supply pipe 2. The guide tube 6 is provided so as to project from the side surface of the water faucet body 3, and has a through hole 6a penetrating in the vertical direction. The shaft 5 projecting from the float 4 is inserted into the through hole 6a, and the arm is provided. The rotation is regulated by being connected with 8.
The guide tube 6 also serves as a guide for the smooth vertical movement of the float 4.

When the water level in the water storage tank 1 drops and the float 4 descends, the arm 8 is caught on the upper end of the guide cylinder 6 and the float 4 is prevented from falling down. 6 and 7 show the operating state of the float 4 due to the water level fluctuation, FIG. 6 shows the state when the water level rises, and FIG. 7 shows the state when the water level falls. FIG. 5 shows another embodiment of the float 4, in which the bottom surface is open.

The operation of the above ball tap is basically the same as that of the conventional pilot type ball tap, but in detail, when the float 4 descends as the water level in the water tank 1 lowers, the arm 8 is moved via the shaft 5. By moving downward, the pilot valve 7 is opened, and the water in the pressure chamber 17 is discharged. As a result, the pressure on the primary side of the water passage 11 becomes larger than the pressure in the pressure chamber 17, and the main valve body 15 moves to the main valve seat 13
Is pushed away from the valve to open, water on the primary side flows to the secondary side,
Water is supplied from the water discharge unit 10 into the water tank 1 through the water supply pipe 2.

When the float 4 rises due to the rise of the water level in the water tank 1, the arm 8 moves upward via the shaft 5, the pilot valve 7 closes, and the pressure in the pressure chamber 17 becomes larger than that on the primary side. The main valve body 15 is pressed against the main valve seat 13 and the water supply is stopped. At this time, the force applied to the pilot valve 7 is much smaller than the pressure on the primary side due to the hole diameter, and the size of the float 4 can be made smaller than the method of directly suppressing the pressure on the primary side.

[0012]

As described above, according to the present invention, the water supply pipe whose tip extends to the vicinity of the bottom of the water tank and is opened is led out from the water supply tap main body, and the water supply pipe is movable in the vertical direction with the water supply pipe as a guide. Attach the float to the upper part of the float, insert the shaft protruding upward from the upper part of the float into the guide tube provided in the main body of the faucet, and install the arm that opens and closes the pilot valve from the pilot valve provided in the main body of the faucet. It projects and this arm,
Since the shaft protruding from the guide cylinder is rotatably connected in a direction orthogonal to the guide cylinder, the float can be arranged together with the water supply pipe at the installation portion of the water supply pipe, which has conventionally been a dead space. Since the movement direction can be up and down along the water supply pipe, the space occupied by the movement of the float can be reduced, the ball tap itself can be downsized, and the size, shape, etc. of the water tank can be reduced. The ball tap can be mounted by reducing restrictions on the mounting position of the member.

[Brief description of drawings]

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

FIG. 2 is a sectional view of the same.

FIG. 3 is an exploded perspective view showing a connected state of the shaft and the arm of the above.

FIG. 4 is a cross-sectional view of the above float.

FIG. 5 is a sectional view showing another embodiment of the above-mentioned float.

FIG. 6 is a side view showing an operating state of the above-mentioned float and showing a rising state.

FIG. 7 is a side view showing an operating state of the float, which is in the descending state.

FIG. 8 is a partially cutaway partial cross-sectional view of a conventional example.

FIG. 9 is an overall configuration diagram of the above.

[Explanation of symbols]

 1 Water Tank 2 Water Supply Pipe 3 Water Supply Main Body 4 Float 5 Shaft 6 Guide Tube 7 Pilot Valve 8 Arm

Front page continuation (72) Inventor Yasuo Maeda 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (1)

[Claims] 1. A pilot type water tank ball tap having a water supply tap main body equipped with a pilot valve opened and closed by a float floating near the water surface in the water storage tank, wherein a water supply pipe whose tip extends to near the bottom of the water storage tank and is opened. A guide that is attached to the water tap main body by attaching the float to the water tap so that it can be moved up and down by using the water pipe as a guide. An arm that penetrates the cylinder and opens and closes the pilot valve from the pilot valve provided on the main body of the water tap is provided in a protruding manner.
A ball tap for a water tank, comprising a shaft protruding from the guide cylinder and being rotatably connected in a direction orthogonal to the shaft.