JPS5934766Y2 - Constant flow ball tap - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a constant flow ball tap, which is a ball tap valve installed in a hot water storage tank of a solar water heater and is equipped with a constant flow valve.

Conventionally, ball taps attached to the hot water tank of solar water heaters automatically supply water when the water level in the tank decreases, but when the water supply pressure increases, water is supplied to the hot water tank by spraying and stirring the hot water in the tank. This method had the disadvantage of lowering the temperature of the hot water, which had already been heated up.

Measures have been taken to prevent the agitation effect caused by the water supply, such as installing partition walls in the hot water storage tank, but these have not been sufficiently effective.

In view of these drawbacks, the present invention is a ball tap installed in a hot water storage tank of a solar water heater, in which an annular locking protrusion is provided inside the inlet of the ball tap body to protrude inward from the inner wall, and one in the center. A constant flow valve made of a thick-walled annular elastic member with a communication hole penetrated therethrough is mounted so that its outer periphery is in contact with the locking protrusion, and the constant flow valve is bent and deformed as the water supply pressure increases. In an attempt to eliminate the above-mentioned drawbacks by providing a constant flow ball tap in which the diameter of the communicating hole is reduced, one embodiment of the present invention will be described below based on the drawings. This is a ball tap body that is attached to a hot water storage tank, and is hollowed out from an inlet 2 and a discharge port 3 that is formed to hang down from the inlet 2, and has a partition wall 4 formed in the direction of the inner shear plane of the discharge port 3. A water discharge hole 5 is bored in the center.

Further, an annular locking protrusion 6 is integrally provided at an appropriate position within the inlet 2 to protrude inward from the inner wall 7, and a thick constant flow valve 8 made of an elastic member is inserted into the inlet 2. A recess is formed in the inner wall 7 of the inlet 2 at the rear of the constant flow valve 8 so as to abut and lock the front surface of the locking protrusion 6 on the rear end surface of the locking protrusion 6 . A groove 9 is provided around the circumference, a retaining ring 10 is fitted into the groove 9, and the constant flow valve 8 is mounted between the retaining projection 6 and the retaining ring 10.

The constant flow valve 8 is elastically deformed into a curved shape as shown in FIG. 2 as the pressure of water flowing in from the inlet 2 increases, and the communication hole 11 penetrated through the center is reduced in diameter, and the water supply is reduced. This controls the flow rate (Figure 3).

Reference numeral 12 denotes a guide vane provided below the water spouting hole 5, and a valve rubber 13 formed from an elastic member is fitted into the upper end of the guide vane 12.

14 is a float fixed to one end of the lever 15;
The other end of 5 is pivotally supported by a fulcrum pin 16 and a lever 15
Due to the midway position, the link 1 Otsu 18 is supported by a fulcrum pin 19 provided on the outer wall of the discharge port 3, and the link 18 is supported by the guide vane 1.
The guide vane 12 is supported by penetrating the inside of the notch 20 bored in the lower part of the float 1 due to water level fluctuations in the hot water storage tank.
The vertical movement of the water discharge hole 5 is linked to the guide vane 12 via a width increasing mechanism A consisting of a lever 15 and links 17 and 18, so that the water discharge hole 5 is automatically opened and closed.

In the present invention, the shape, structure, etc. of the ball tap main body 1 are not limited to those shown in the drawings.

In short, the present invention is a ball tap installed in a hot water storage tank of a solar water heater, in which an annular locking protrusion 6 is provided inside the inlet 2 of the ball tap main body 1 and projects inward from the inner wall 7. The constant flow valve 8 made of an elastic member is connected to the locking protrusion 6.
Since the outer periphery is in contact with the valve, when the water supply pressure of the water supplied to the inlet 2 becomes higher than a predetermined pressure, when the constant flow valve 8 is pushed downstream by the excess water pressure bone,
Since the outer periphery of the constant flow valve 8 is abutted and supported by the locking protrusion 6, the constant flow valve 8 is automatically deformed into a curve, and the degree of deformation is automatically made to correspond to changes in the amount of excess water supply. Furthermore, since the constant flow valve 8 is made of a thick-walled annular elastic member with a communication hole 11 formed through the center, the diameter of the communication hole 11 decreases as the degree of curvature deformation increases, so that the water supply pressure is reduced. Even if fluctuations occur, the flow rate discharged from the discharge port 3 can be controlled to a constant amount, so that the water supplied from the discharge port 3 of the ball tap body 1 to the hot water storage tank of the solar water heater increases as the water supply pressure increases. Since the force is suppressed and the hot water is supplied at a constant flow rate, the hot water in the hot water storage tank is not stirred and the temperature of the hot water is not lowered, and this control mechanism only applies the bending deformation of the elastic member. Therefore, it is simple and has great practical effects, such as not being expensive compared to a normal ball tap.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a partially cutaway front view of a constant flow ball tap according to the invention, Fig. 2 is a sectional view of the main part during water supply, and Fig. 3 is a sectional view of the main part during water supply. It is a relationship diagram between water pressure and flow rate. 1...Ball tap body, 2...Inflow port, 8...Constant flow valve.

Claims (1)

[Scope of utility model registration request] This ball tap is attached to a hot water storage tank of a solar water heater, and the inlet of the ball tap body has an annular locking protrusion projecting inward from the inner wall, and a communicating hole in the center. A constant flow valve made of a thick annular elastic member is mounted so that its outer periphery is in contact with the locking protrusion, and the constant flow valve is curved and deformed as the water supply pressure increases. Constant flow ball tap.