CN2524019Y

CN2524019Y - Slow shutting silenced hydraulic control valve

Info

Publication number: CN2524019Y
Application number: CN 01274900
Authority: CN
Inventors: 牛凤山
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-26
Filing date: 2001-11-26
Publication date: 2002-12-04
Anticipated expiration: 2011-11-26

Abstract

The utility model relates to a slow shutting silenced hydraulic control valve, belonging to the mechanical valve field, comprising a valve shell, a shell water road inlet end, an outlet end and a hydraulic pressure room; the inlet end of the water road of the valve is connected with the A lead; the other end of the lead is connected with the upper part of the valve through a water ball valve to the inside of the valve body; the top part of the cover is provided with a pressure measuring meter; the lower part cavity of the cover is a closed hydraulic pressure room; the central axis part in the room is provided with a valve pole which is blocked in the piston position, and the lower end is connected with a semi sphere valve flap on the valve; the wall of the upper water road outlet end of the valve is connected with B lead; one end of the lead is connected with the other side of the cover in the upper part of the valve through the hydraulic lead valve and is connected with the valve body. The utility model can reduce the speed of the main valve, remove the noises and enhance the service life of the valve by three to four times.

Description

Slow Close noise elimination hydraulic control valve

(1) technical field

The utility model belongs to the machinery valve field, specially refers to a kind of Slow Close noise elimination hydraulic control valve that is used for the boiler blow-down water controlling plumbing fixtures.

(2) background technique

In normal-pressure boiler backwater control system, be arranged on ducted machinery valve, can control automatically the keying of valve when utilizing working fluid through the valve pipe, in the valving of prior art, valve motion is consistent with water (flow) direction, be subjected to water impact, valve opening and closing, its movement velocity is a fast lifting, bump is fierce, the impact noise that sends when falling is also very big, has both influenced environment, constantly is in the sound interference of vibration, influence the life-span of valve again, flap, valve is very easy to wear, thereby can reform from structural design with regard to wishing, redesigns a kind of valve mechanism, make the main valve closing velocity slow, anti-sealing hangs down, and eliminates and closes sound, and wish to prolong the working life of valve.

(3) summary of the invention

Be the technical problem that solves, be that to overcome the keying speed of existing valve fast, close the big sound takes place in the closed procedure, many defectives such as working life is short, and redesign the valve that utilizes the liquid current control of a kind of Slow Close and noise elimination, in order to reach this purpose, realize by the following technical solutions, a kind of Slow Close noise elimination hydraulic control valve comprises valve shell, and shell is provided with the waterway inlet end, outlet end, hydraulic chamber, it is characterized in that, waterway inlet end outer wall is connected with an A conduit on the valve body, and this conduit the other end is connected to cap one side on valve body top by the water polo valve and leads in the body, and the cap top is connected with pressometer, cap lower case inner cavity is the hydraulic chamber of sealing, indoor central axis is provided with valve rod, and this valve rod is stuck in the piston body center, and the lower end is connected with the hemisphere flap and places on the valve; Water route outlet end outer wall is connected with a B conduit on the valve body, and this conduit one end is connected to valve body top cap opposite side by the hydraulic pilot valve, and leads in the body.

The described piston body that blocks valve rod, it comprises one deck rubber gasket, the sealing pad makes the housing upper cavity form the hydraulic chamber of sealing, after liquid enters hydraulic chamber by the A conduit, along with pressure is added on the valve rod, it moves down, and closes main valve lentamente, when measuring according to the top pressure table, when arriving the certain pressure value, the hydraulic pilot valve that unlatching links to each other with the B conduit makes the hydraulic chamber pressure release, and hydraulic chamber pressure reduces, flap moves up, then main valve promptly is unlocked, owing to adopt the sealing of hemisphere face flap, to abrading section under pressure, can enter new position again, can continue to use, reach the effect of reparation automatically, the bottom of hemisphere flap is connected with locating support.

This device flow is adjustable, transfers when big when flow in the A conduit, and the speed that main valve is closed is fast; And when flow was turned down in the A conduit, the speed that main valve is closed was slow.

When inspecting valve body hydraulic chamber upper pressure table, can learn whether valve is opened, the piston pressure of pressure gauge reflection is less than upstream pressure during unlatching.

The utility model beneficial effect is, main valve speed when opening and closing is slowed down, and closes sound and eliminates, and violent bump no longer takes place, and makes life of valve can improve 3-4 doubly.

(4) description of drawings

Fig. 1 is the general structure schematic representation of this hydraulic control valve

Fig. 2 is the graph of a relation of hemisphere flap and valve opening

Fig. 3 is A, B conduit and cap sidepiece annexation figure

(5) embodiment

With reference to Fig. 1, represent this fluid-control valve general structure, valve shell 1, shell is provided with waterway inlet end 2, on the port wall, be provided with A conduit 3, be connected to a side on the main valve cap by small ball 4, and lead in the body, cap 14 lower cavity are hydraulic chamber 5, indoor central axis is provided with the valve rod 6 that moves up and down, its device is in piston body 7 centers, the lower end is connected with hemisphere flap 8 and position shelf 10 thereof, is 9 by the valve of its keying, is provided with pressure gauge 11 at last cap top, cap 14 opposite sides are connected with B conduit 13 and hydraulic pilot valve 12, and the B conduit leads to the water route outlet end 15 on the valve housing.

Claims

1, a kind of Slow Close noise elimination hydraulic control valve, comprise waterway inlet end, outlet end, hydraulic chamber on valve shell, the shell, it is characterized in that, waterway inlet end outer wall is connected with an A conduit on the valve body, this conduit the other end is connected to cap one side on valve body top by the water polo valve and leads in the body, the cap top is connected with pressometer, cap lower case inner cavity is the hydraulic chamber of sealing, indoor central axis is provided with valve rod, this valve rod is stuck in the piston body center, and the lower end is connected with the hemisphere flap and places on the valve; Water route outlet end outer wall is connected with a B conduit on the valve body, and this conduit one end is connected to valve body top cap opposite side by the hydraulic pilot valve, and leads in the body.

2, hydraulic control valve according to claim 1 is characterized in that, the described piston body that blocks valve rod, and it comprises one deck rubber gasket.

3, hydraulic control valve according to claim 1 is characterized in that, the bottom of hemisphere flap is connected with locating support.