CN1263221A

CN1263221A - Hydraulic level double control valve

Info

Publication number: CN1263221A
Application number: CN 99102529
Authority: CN
Inventors: 杨玉思
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-07
Filing date: 1999-02-07
Publication date: 2000-08-16

Abstract

The present invention provides a hydraulic water-level double-float control valve, and said valve can be used in water pool, water tower or circulating water tank of industrial and civil water-supplying and heating system to control water level in pool. It is characterized by that it adopts double-float control and its work is reliable.

Description

Hydraulic level double control valve

The present invention relates to two kinds of water-level control apparatus---float valve and altitude valve, float valve and altitude valve all are loaded on the water tower of general industry enterprise and domestic water supply system, in pond and the water tank, be used to control the water surface elevation in the pond (water-tower water tank etc.), promptly when the pool inner water face is lower than the design water surface, this valve is opened automatically, makes water enter the pond; When the pool inner water face is greater than or equal to the design water surface, close automatically, stop into water.

Float valve that has earlier and altitude valve generally are suitable for the more stable operating mode of pond inlet pressure, and for example, generally hour work is good at the pond inlet pressure for float valve, but then may lose efficacy when pressure is big.Altitude valve uses good when pressure is big, in hour inefficacy of pressure, all kinds of water systems of practical application, pond (water tower etc.) inlet pressure amplitude of variation is very big, and because of complexity with water condition, pressure is changed to the maximum working pressure scope 0, caused above-mentioned two kinds of shortcomings that the valve working reliability is not good.

Hydraulic level double control valve of the present invention, aim to provide a kind of perfect hydraulic water level control valve that is suitable for any working condition of actual water system, it has float valve low pressure performance and reaches the good two-fold advantage of hydraulic water level control valve high pressure performance well, 0 to the maximum working (operation) pressure (MWP) scope equal good control water level.

The motion spool that hydraulic level double control valve of the present invention is mainly formed by valve body, valve seat, two ball floats of size and diaphragm thereof, slide bar, flap etc. etc. is formed, very low at valve import hydraulic pressure, even when approaching zero, if the water surface is lower than design water level, flap can be opened because of the downward gravity of big ball float, water enters the pond by valve seat, when water level reaches design water level, big ball float is subjected to floating function to close flap by ball lever, stop into water, at this moment, small floating ball is also closed, low-pressure water enters the diaphragm cavity of resorption by conduit, to closing flap certain booster action is arranged also.When valve import hydraulic pressure is higher, if the pond water surface is lower than design water level, then big small floating ball all is in the decline state, the small floating ball opening of valves, diaphragm cavity of resorption decompression, flap is opened rapidly under the effect of pressure water stream, and in the pond, intake, when the pond inner face reached design water level, small floating ball was closed, and pressure water stream enters the diaphragm cavity of resorption by conduit, make spool produce a holder power that makes progress, this power because of diaphragm area greater than the flap area greater than the downforce on the flap, thereby move on the whole spool, close fully up to flap.

Describe the concrete structure of hydraulic level double control valve of the present invention in detail below in conjunction with accompanying drawing.

Accompanying drawing is the main sectional view of hydraulic level double control valve of the present invention.

With reference to figure, valve body 1 and valve seat 10 have constituted an airtight fluid passage, and slide bar 7 upper ends are by top board 3, and press table 4 is tightened to one with diaphragm 5, and the outer rim of diaphragm 5 is pressed on the valve body by valve gap 2.Valve body 1 top is passed in the lower end of slide bar 7, and to have the hole and the flap 11 of seal ring 6 affixed, be connected with slide bar on the ball lever 13 by pin 14, ball lever 13 1 ends are connected with big ball float 12, the other end is hinged by the pole on bearing pin 15 and the valve seat, the two ends of conduit 8 are connected to the top and the middle part of valve body 1, and are connected with small floating ball valve 9.

In working order down, when the water surface is lower than design water level in the pond, big ball float 12 and ball lever 13 fall, small floating ball valve 9 also is opening state, diaphragm 5 and assembly pressing plate 3 thereof, pressing plate 4 all is in passive state, slide bar 7 is not produced upper pulling force, flap 11 is opened under the tension of water pressure and big ball float 12, and water enters the pond by valve seat 10, after the pond water surface rises to design water level, big ball float 12 rises, small floating ball valve 9 also is closed condition, and pressure water stream then enters valve body 1 epicoele by conduit 8 from valve body 1 middle part, makes diaphragm 5 bottoms produce uplift force, this uplift force since diaphragm 5 areas greater than flap 11 areas, and greater than the lower pulling force of flow action on flap, simultaneously, big ball float 12 also makes flap rise by ball lever 13 and pin 14, thereby partly go up sliding by connecting diaphragm 5 and flap 11 and slide bar 7 whole spools, flap 11 is pressed on the valve seat 10, the pool inner water face is no longer risen, avoid overflow.The effect of valve gap 2 is to compress diaphragm 5 to make it keep seal action, and bearing pin 15 can freely rotate ball lever 13 around dead axle, and seal ring 6 makes the middle part of valve body and two-part that epicoele is divided into controlled deciliter, thereby has realized water level control effectively.

The another kind of mode that this hydraulic level double control valve is realized is be connected in series on the slide bar with the diaphragm of two areas less than flap, but this to be also in the scope that this patent newly comprises.

Claims

1. one kind by valve body 1, big ball float 12, small floating ball valve 9 and form the hydraulic level double control valve that the diaphragm 5, slide bar 7, flap 11 etc. of movable spool are formed, it is characterized in that the oil hydraulic cylinder that 9 controls of small floating ball valve are made up of valve body epicoele and diaphragm 5, the diaphragm 5 of this oil hydraulic cylinder links to each other with slide bar 7, and the keying by slide bar 7 control flaps 11, big ball float 12 is also controlled the keying of flap 11 by ball lever 13 and pin 14, and two kinds of controlling parties play the effect of mutual reinforcement to equal unanimity.

2. by claim 1 defined hydraulic level double control valve, it is characterized in that diaphragm 5, slide bar 7 and flap 11 fuse, form movable valve plug, and the useful area of diaphragm 5 is greater than flap 11.

3. by the hydraulic level double control valve of claim 1 defined, be characterized in that diaphragm 5 can be divided into the diaphragm less than flap 11 of two series connection, the effect that its control flap 11 opens and closes is constant.