CN2475899Y

CN2475899Y - Flow equalising valve

Info

Publication number: CN2475899Y
Application number: CN 01204975
Authority: CN
Inventors: 马军正
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-08
Filing date: 2001-02-08
Publication date: 2002-02-06
Anticipated expiration: 2011-02-08

Abstract

The utility model provides a flow control valve for heating supply in a pipe system, which utilizes the fluid pressure change of the system to regulate the flow rate automatically. The flow control valve is composed of a valve body, a valve cover, a bottom cover, a hand holder, a pointer, a valve stem, a drum regulation valve flap, a spring, a piston, a double-cork valve stem and a double-cork valve flap. The model is featured in that the spring, the piston and the double-cork valve stem are arranged inside the drum regulation valve flap which is not only a part of a sensor but also works as a valve flap. The utility model is of a simple structure and a low manufacture cost.

Description

A kind of flow balance valve

The utility model relate to a kind of in heating, utilize in the pipes system system's fluid pressure to change, the flow balance valve that flow is automatically adjusted.

Similar valve of the prior art, its Flow-rate adjustment flap and pressure sensor are made two-part respectively, thereby volume is big, complex structure.

The purpose of this utility model will provide a kind of exactly will regulate flap and pressure sensor is combined as a whole, flow balance valve simple in structure.

The purpose of this utility model is achieved in that it regulates flap by valve body, valve gap, bottom, valve rod, locknut, handgrip, pointer, dial and the spring, piston, two plug valve bar, two plug valve lobe, cartridge type that constitute pressure sensor and form, it is characterized in that, spring, piston, two plug valve bar are installed in cartridge type and regulate in the flap, it is the part of pressure sensor that cartridge type is regulated flap, has played the effect of flap again.

Below in conjunction with accompanying drawing the utility model embodiment is elaborated.

Accompanying drawing is the utility model embodiment's a structural profile schematic representation.

As shown in drawings, cartridge type is installed in the valve body (1) and regulates flap (22).Cartridge type is regulated in the flap (22) spring (23), piston (24), two plug valve bar (25) is installed.Two plug valve bars (25) upper end is connected with piston (24), and the pilot hole (6) on lower end and the bottom (5) is connected.Valve rod (18) upper end and locknut (20), handgrip (19) connects, and dial (16) is followed closely on valve gap (21).Cartridge type is regulated flap (22) bottom valve opening (12), is used for controlling opening of valve.

When regulating flow, unclamp locknut (20), turn handgrip (19) makes pointer (17) adjust on dial (16) by the flow scale value that sets, and then locknut (20) is tightened.

When turn handgrip (19), promptly drive cartridge type and regulate flap (22) along self rotational, the valve opening (12) that cartridge type is regulated flap (22) bottom promptly produces displacement with throttle orifice (11), and form certain valve opening, make fluid between inner chamber (9) and water chamber (10), form pressure drop, realize Flow-rate adjustment.Meanwhile in the water chamber (10), fluid with back pressure is by hole (13), hole (14) enters in the spring chamber (15) of cartridge type adjusting flap (22), and elastic force and the formation of the hydrodynamic pressure in the inner chamber (9) balance with spring (23) remain on the certain position piston (24).Thereby the flow of the valve of having determined to flow through.

When the hydrodynamic pressure in the water-inlet cavity (2) raises, enter cavity of resorption (7) by two-seater valve opening (8), the hydrodynamic pressure of inner chamber (9) increases.This pressure makes by valve opening (12), and the flow that throttle orifice (11) enters water chamber (10) temporarily increases.Simultaneously under the effect of this rising pressure, piston (24) two ends disequilibrium moves up, and by two plug valve bars (25) drive two plug valve lobes (3), (4) are moved synchronously, the circulation area of two-seater valve opening (8) is reduced, thereby reduced the flow that has entered cavity of resorption (7) inner chamber (9), at this moment the flow in the water chamber (10) recovers, and piston (24) keeps balance on new position.

In like manner, when water-inlet cavity (2) when fluid pressure reduces, flow in the water chamber (10) can temporarily reduce, but at the elastic force of spring (23) with enter under the acting in conjunction of spring chamber (15) fluid pressure, piston (24) and two plug valve lobe (3), (4) will move down, the circulation area of two-seater valve opening (8) is increased, thereby the flow in the water chamber (10) is recovered.No matter how water-inlet cavity (2) fluid pressure changes, the flow in the water chamber (10) remains constant in a word.

Two plug valve lobes (3), (4) physical dimension are identical, and the fluid momentum effect is on it the time, equal and opposite in direction, and direction is opposite, cancel out each other.Thereby eliminated of the influence of fluid impulse force to piston (24).

The plug (26) of outwarding winding carries out blowdown.

When readjusting flow, turn handgrip (19) changes the aperture between valve opening (12) and the throttle orifice (11), and it is stable that the flow in the water chamber (10) will keep on new flow point.

Claims

A kind of system's fluid pressure that utilizes changes the flow balance valve that flow is automatically adjusted, form by valve body, valve gap, bottom, valve rod, locknut, handgrip, pointer, dial, cartridge type adjusting flap, spring, piston, two plug valve bar, two plug valve lobe, it is characterized in that spring, piston, two plug valve bar are installed in cartridge type and regulate in the flap.