CN2433471Y - Automatic valve of slow turn-on by decompression and flow guiding - Google Patents

Abstract

The utility model discloses a decompression and flow guide automatic valve capable of being slowly opened. A valve body is divided into three cavity bodies through a film plate and a valve clack which are arranged in the automatic valve, and the cavity bodies is a pressure charging cavity, a pressure reverse cavity and a flow discharging cavity. The automatic valve is opened and closed through the cooperation of an automatic control part for pressure charging and an automatic flow regulating part for flow guide. Meanwhile, the utility model can perform the functions that the automatic valve is slowly or fast opened and the flow quantity is regulated. The utility model has the advantages of no inner and outer leakage, small operation power and convenient maintenance, and is suitable for the automatic management of pipeline systems.

Description

The pressure release water conservancy diversion can delay out automatic valve

The utility model relates to the valve that industries such as a kind of water supply, air feed, chemical industry, system wine, oil are used, and particularly a kind of pressure release water conservancy diversion can delay out automatic valve.

The valve that uses in industries such as water supply, air feed, chemical industry, system wine, oil mostly adopts the directly valve of control main flow medium at present, is called for short the main flow control valve, and this class valve exists long-term unsolved technical problem:

1, the main flow control valve adopts the screw switch device usually, and its handwheel strengthens with the increase of valve volume, and hand wheel torque is big, and switch is wasted time and energy, the valve that gets rusty for growing service time, and its opening and closing are difficulty especially.

2, the main flow control valve causes mechanical wear easily owing to be subjected to the restriction of its structure, produces internal and outernal leakage thus, problem such as changes, the repairing time is long, the cost of repairs is big.

3, the open and close of large-scale valve must be undertaken by the gear drive by motor.Motor-operated valve mechanism complexity, valve involves great expense, cost of use height, maintenance cost height.Its opening speed is difficult to arbitrarily adjust.

4, a kind of membrane bowl type Leading valve was once arranged in the valve industry, its major defect is that its film bowl very easily damages, and also has a kind of piston type Leading valve, and its major defect is that the seal ring resistance on the piston is too big, influence the action of piston, because above defective causes it to be difficult to promote.

5, the main flow control valve is difficult for realizing the automation centralized control in piping network.

The purpose of this utility model will provide a kind of exactly and prevent internal and outernal leakage, reduce the cost cost, shortens the repair time, and opening speed can be adjusted and can realize that automatic central controlled pressure release water conservancy diversion can delay out automatic valve.

The utility model is achieved in that it is by the valve body part that the pressure release water conservancy diversion can delay out automatic valve, annotates and presses automatic control section and pressure release water diversion part to form.There is a valve gap that cooperates with it the top of valve body, and the cavity that forms between valve body and the valve gap is divided into three cavitys by lamina membranacea and flap, promptly annotates and presses chamber, back pressure chamber and drainage lumens.The top of flap links together by screw and pressing plate and lamina membranacea, and lamina membranacea is pressed between valve gap and the valve body, and the bottom of flap is a truncated cone platform shape, cooperates with conical surface on the valve body to form sealing.There are notes to press on the valve gap with electromagnet and two diaphragms transferring stream to use electromagnet and cooperate with it, be subjected to respectively two in the electromagnet the armature knee-action and open or compress and annotate to press hole and relief hole, and then the media quantity in the change back pressure chamber, the unlatching that makes flap and lamina membranacea lift or fall to reach valve, transfer and function such as flow, close.When outage, to annotate and press the diaphragm of top, hole to be in normally open, the diaphragm of relief hole top is in closed condition.During valve working, annotate to press the medium in chamber to press the hole to enter back pressure chamber through annotating, flap is pressed on the sealing surface in the valve body, block and annotate the passage of pressing chamber and drainage lumens, valve is in closed condition.If will open the passage of main flow valve body, the pressure of back pressure chamber is descended, so just palpus is closed the descending roof pressure diaphragm of its armature for the energising of notes piezoelectricity magnet and is annotated the pressure hole, give simultaneously and transfer the energising of stream electromagnet to make the up relief hole of opening of its armature, medium in the back pressure chamber flows to drainage lumens at the roof pressure lower edge of flap and lamina membranacea relief hole, up the opening of flap this moment annotated passage between pressure chamber and the drainage lumens, valve opening.Transferring the stream function to be achieved in that to transfer what feed in the stream electromagnet is impulsive current, each pulse is opened electromagnet and is closed once, a certain amount of notes of at every turn releasing are pressed the chamber medium, by length and the frequency and the current"on"time of regulating impulse, can change speed and quantity that the back pressure chamber medium is released, just regulate the speed of lifting and the last height of flap and lamina membranacea.Valve opening speed and the purpose of regulating flow have been realized.

The utility model has prevented the internal and outernal leakage problem effectively under the effect of back pressure chamber and notes pressure cavity pressure difference, because structure and conventional valves structure have essential distinction, mechanical wear reduces greatly; The maintenance maintenance is very convenient, and the used time is short.Owing to be not that the main flow medium is directly controlled, the utility model has been cancelled the spiral opening and closing device, and the open and close required drive is very little, but both snap switch of opening time can slowly be opened again; Do not need motor drives, greatly reduce cost, solved the control difficult problem automatically of concentrating of pipeline network system.

Below in conjunction with accompanying drawing the utility model is described in further details.

Accompanying drawing 1 is the structural representation under the utility model closed condition.

With reference to accompanying drawing 1.The pressure release water conservancy diversion can delay out automatic valve, is made up of main flow valve body (20), valve gap (10), flap (17), diaphragm gland (6), (26), electromagnet (5), (28).

One valve gap (10) that cooperates is with it arranged in the top of main flow valve body (20), between valve gap (10) and valve body (20), be pressed with a lamina membranacea (14), lamina membranacea (14) is linked together by screw (16) and pressing plate (18) with flap (17), circular hole on the column part of flap (17) and the valve body (20) is slidingly matched, lamina membranacea (14) is manufactured by elastic flexible material, can move up and down with the variation in pressure of back pressure chamber (19), flap (17) below truncated cone partly is equipped with elastic abrasion-proof material film bowl (15), can make valve closing tight, not produce internal leakage.

There is the piezoelectricity magnet (28) of notes the top of valve gap (10) and transfers stream electromagnet (5), annotate in the piezoelectricity magnet (28) spring (27), armature (30), coil (29) are housed, one handle (33), retaining handle (32) are arranged at armature (30) top, annotating piezoelectricity magnet (28) top has a locking trough (31), and notes piezoelectricity magnet (28) below has a diaphragm gland (26) to cooperate with valve gap (10) and diaphragm (25) is pressed on the valve gap (10); Transfer stream electromagnet (5) to be made up of handle (1), armature (2), spring (3) and coil (4), diaphragm gland (6) is pressed on diaphragm (7) on the valve gap (10); (23), (24) for annotate pressing the hole, (8), (9) are relief hole, (11) are seal ring.Two electromagnet and diaphragm gland are connected on the valve gap (10) by screw, are connected by screw between valve gap (10) and the valve body (20).

The pressure release water conservancy diversion can delay out flange (12), (22) of automatic valve by two ends and connect with pipeline.After pipeline feeds medium, medium is along annotate to press hole (23), (24) to enter and be full of back pressure chamber (19) and flap (17) is pressed on the sealing surface of valve body (20), because of relief hole (8) is in normally off, so it is stable that the pressure in the back pressure chamber keeps, though annotate to press the pressure roof pressure flap (17) that makes progress arranged in the chamber, but press the sectional area of chamber sectional area less than the flap top because of the notes of flap below, so flap does not move on not understanding, the valve mainstream channel is in closed condition.

When wanting Open valve, must piezoelectricity magnet (28) energising will be annotated, the descending roof pressure diaphragm of its armature (30) (25) is compressed annotate pressure hole (24) shown in double dot dash line among the figure, make the medium sealing in the back pressure chamber (19), to transfer stream electromagnet (5) to feed impulsive current simultaneously, each pulse, just make armature (2) once up, diaphragm (7) is opened once under the pressure of back pressure chamber medium, relief hole (8), (9) in drainage lumens (13), enter a certain amount of medium, after the pulse, armature (2) resets under the effect of spring (3) and compresses diaphragm (7) and relief hole (8), medium in the back pressure chamber is closed again, but because of the medium in the back pressure chamber has reduced a part because of entering drainage lumens, flap is because of moving a segment distance on the pressure change, the main passage of valve body is opened, valve is in opening state, and the speed of valve opening will depend on the length and the frequency of pulse, and the flow of valve will depend on the number of pulse.When meeting the requirements, will transfer flow stream electromagnet (5) outage, annotate piezoelectricity magnet (28) and still switch on this moment, back pressure chamber (19) is though interior media quantity has changed but resistant-walled, and the position of flap (17) also is stable, and promptly the flow in the valve main passage is stable.In the time that the main passage will be closed, need only piezoelectricity magnet (28) outage will be annotated, its armature (30) upwards lifts under the effect of spring (27), diaphragm (25) moves upward under annotating the pressure of pressing medium in the chamber (21), annotating the medium of pressing in the chamber is communicated with back pressure chamber (19), flap (17) pressure difference at two ends is up and down pushed flap to the descending main passage of closing immediately, more than is exactly a complete work cycle.By as can be seen above, this valve can make valve close automatically when having a power failure suddenly, so it meets the requirement of failure safe type.

This valve can use manually-operable when having a power failure, during unlatching, earlier by lower handle (33) and rotate to an angle, retaining handle (32) is entered in the locking trough (31), lifts handle (1) then, puts down handle (1) and get final product when flow meets the requirements.

Need only rotatable handle (33) when closing, make retaining handle (32) withdraw from locking trough (31) and get final product, this moment, valve can be closed.

This valve is isolated fully with medium in the valve and outside because of its diaphragm (25), (7), so solved the problem that medium leaks.

Claims (1)

1, a kind of pressure release water conservancy diversion can delay out automatic valve, be by the valve body part, annotating pressure-controlled part and water conservancy diversion transfers the stream part to form automatically, valve body partly is by main flow valve body (20), valve gap (10) is formed, cavity between main flow valve body (20) and the valve gap (10) is separated into to annotate presses chamber (21), back pressure chamber (19) and drainage lumens (13), annotate and press top, chamber (21) that one flap (17) is arranged, the bottom of flap (17) is truncated cone platform shape, its shape is up big and down small, frustum-conical surface is equipped with and truncated cone shape, the film bowl (15) that size is coincide, the conical surface of flap (17) and the sealing surface contact matching of pairing main flow valve inner; Annotating pressure-controlled partly is to press hole (23), (24), diaphragm (25) by annotating, diaphragm gland (26), annotating piezoelectricity magnet (28) forms, annotate and press the chamber to press hole (23), (24) to be communicated with back pressure chamber (19) by annotating, the top in the notes pressure holes (24) on valve gap is withheld at the edge of diaphragm (25) by diaphragm gland (26), annotate the lower end roof pressure contact diaphragm (25) of the armature (30) in the piezoelectricity magnet (28), on the armature shaft of the diaphragm gland (26) and the armature shaft shoulder, be with a pressure spring (27); Water conservancy diversion transfers the stream part to be made up of relief hole (8), (9), diaphragm (7), diaphragm gland (6), accent stream electromagnet (5) automatically, drainage lumens (13) is communicated with back pressure chamber (19) by relief hole (8), (9), and the top of the relief hole (8) on valve gap (10) is withheld at the edge of diaphragm (7) by diaphragm gland (6); Transfer the lower end of the armature (2) in the stream electromagnet (5) contact with diaphragm (7) roof pressure, flowing between the electromagnet housing inwall at the top shaft shoulder of armature (2) and accent has a pressure spring (3) that is enclosed within on the armature; It is characterized in that: the cavity in the main flow valve body (20) is to be separated into to annotate by lamina membranacea that links together (14) and flap (17) to press chamber (21), back pressure chamber (19) and drainage lumens (13); Water conservancy diversion electromagnet (5) is a pulsation electromagnet.

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