CN2313978Y - Pneumatic pressure ball cock - Google Patents

Abstract

The utility model discloses a float valve for a water tank, which is designed to solve that the opening and closing of the float valve is flexible and the service life is long. The float valve for the water tank comprises a valve seat and a floating ball. The float valve for the water tank is characterized in that the upper part of the valve seat is provided with a convex ring block, and the lower part corresponding to the floating ball is provided with a matched convex ring valve core. The bottom part of the valve seat is provided with a water inlet hole channel. The utility model has the advantages of compact and reasonable structural design, easy fabrication, long service life, etc.

Description

The air pressure float valve

The utility model discloses a kind of float valve of water tank.

Float valve in the sanitaryware water tank commonly used now, based on plastics and part metals unit construction, it uprises by water level in the case, and ball float rises, and the lever transmission by iron or copper cross-arm plays the effect of opening of closing again.Its shortcoming has 1, usually block malfunctioning and leak and spilling water, and 2, metal assembly ducks in drink for a long time, perishable rust and reducing its application life.It as application number 92200667.9 Chinese patent " ball float hydraulic pressure stop valve ", it is made up of valve seat, ball float, connecting rod, valve piece, spool, diaphragm, lock nut, by a very little ball float along with liquid level moves up and down the control spool, to change the fluid pressure of surge-chamber, the keying of the change control valve door of the fluid pressure of dependence surge-chamber, thus reach the purpose of controlling cistern water level.Its shortcoming is that structure is complicated, and adopts metalwork, easily gets rusty.As application number is that 91215343.1 Chinese patent " float valve " also exists similar shortcoming.

Therefore the purpose of this utility model is to provide a kind of simple in structure, long service life, start or stop air pressure float valve flexibly.

The technical solution of the utility model is to realize like this.The float valve of this water tank comprises valve seat, ball float, it is characterized in that the bulge loop piece is arranged at valve seat top, and coupling bulge loop spool is arranged at corresponding ball float bottom; The valve seat bottom has into water duct.

Between above-mentioned bulge loop piece and the bulge loop spool sealing ring is installed; Be movable the connection between above-mentioned bulge loop piece and the valve seat; Be movable the connection between above-mentioned ball float and the bulge loop spool; The movable connection valve bonnet of above-mentioned bulge loop piece shell; Above-mentioned movable connection can be and is threaded, cassette connects, socket connection; The water inlet duct of above-mentioned valve seat bottom has screw thread.

Air pressure float valve of the present utility model has the reasonable in design compactness, utilize outside the difference of gravity and buoyancy, also adopt compressed air pressure self-closing, have self-closing from opening sensitivity, spacing accurate, can reduce liquid stream effectively and run off, adopt overall plastic structure, can increase the service life, and reduce the consumption of metals resources, advantages such as low cost of manufacture.

Description of drawings.

The structure chart 1 of Fig. 1, air pressure float valve;

The structure chart 2 of Fig. 2, air pressure float valve.

Below in conjunction with description of drawings embodiment of the present utility model is described further.

As shown in the figure, the float valve of this water tank comprises valve seat (4), ball float (1), the valve seat bottom has into water duct, there is the installation screw thread in the duct that intakes simultaneously, the valve seat top bulge loop piece (3) that is threaded, the bulge loop piece valve bonnet shell (2) that is threaded again has ball float in the valve bonnet shell, the ball float lower thread connects bulge loop spool (5), and sealing ring (6) is arranged on the bulge loop spool.Above-mentioned being threaded also can be the socket connection of slot and cutting, or is that card base is connected with the cassette of hole clipping.

This valve course of work is as follows, when liquid process valve body injection water tank, cistern water level constantly raises, and rises to certain position, ball float is raise by buoyancy effect, drive spool and rise until the valve closure, when cistern water level descended, ball float was subjected to buoyancy and diminishes, under gravity and compressed air pressure effect, descend, drive spool and also descend, valve has just been opened, and water is the filled water case again.

Claims (7)

1, a kind of float valve of water tank, it comprises valve seat (4), ball float (1), it is characterized in that:

Bulge loop piece (3) is arranged at a, valve seat top, and coupling bulge loop spool (5) is arranged at corresponding ball float bottom;

B, valve seat bottom have into water duct.

2, float valve as claimed in claim 1 is characterized in that installing between described bulge loop piece and the bulge loop spool sealing ring (6).

3, float valve as claimed in claim 1 is characterized in that being between described bulge loop piece and the valve seat movable the connection.

4, float valve as claimed in claim 1 is characterized in that being between described ball float and the bulge loop spool movable the connection.

5, float valve as claimed in claim 1 is characterized in that described bulge loop piece movable connection valve bonnet shell (2).

6, as claim 3 or 4 or 5 described float valves, it is characterized in that described movable connection can be threaded, cassette connects, socket connection.

7, float valve as claimed in claim 1 is characterized in that the water inlet duct of described valve seat bottom has screw thread.

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