CN2299202Y - Control mechanism of check valve - Google Patents

Abstract

The utility model relates to a control mechanism for a stop valve, which comprises a valve body. The valve body is provided with a water inlet and a water outlet; the inside of the valve body is provided with a valve clack and a valve rod; the valve clack is opened or closed by a control mechanism; in the control mechanism, one end of the valve rod is connected with a piston, the outside of the piston is provided with a piston cylinder, a spring is arranged between the piston and the piston cylinder, and the valve body is connected with a flange; the flange is provided with a small valve body, the small valve body is internally communicated with a small valve rod, and the other end of the small valve rod is connected with a hand wheel; the water inlet of the valve body is provided with a joint body, one branch water pipe of the joint body is communicated with the inner cavity of the small valve body, and the other branch water pipe is connected with a water inlet joint of an electromagnetic valve; a water outlet joint of the electromagnetic valve is connected with a joint of the small valve and is communicated with the inner cavity; the inner cavity of the small valve body is provided with a water outlet hole which is communicated with the cavity of the piston cylinder.

Description

The stop valve control mechanism

The utility model relates to manually, the electric dual-purpose shutoff valve, particularly relates to the control mechanism of stop valve, is particularly suitable for fire hydrant.

The use face of stop valve is very extensive, but has the unlatching of stop valve or close the just realization of rotation continuously of dependence handwheel or driven by motor valve rod, warp.Therefore, the major defect of original technology is: one, troublesome poeration, and speed is slow, and labor intensity is big; Two, handwheel or motor volume are big, the structure heaviness; If three to be used for fire-fighting supporting, can not monitor automatically, can lose the fire extinguishing good opportunity.

The purpose of this utility model is a kind of electronic, dual-use manual of design, can realize automatic monitoring, simple to operate, rapid, light stop valve, particularly stop valve control mechanism in the time of manually.

The art designs scheme of the utility model stop valve is: a valve body is arranged, water intake and water outlet are arranged in the valve body, flap and valve rod are arranged in valve body, and installation handwheel, flap is controlled by one group of control mechanism and is opened or closed, its so-called control mechanism is that of valve rod connects flap, the other end of valve rod connects piston, and piston has piston cylinder outward, mounting spring in piston and the piston cylinder, the valve body adpting flange, little valve body is arranged on the flange, logical small valve-rod in the little valve body, the small valve-rod other end connects handwheel, at valve inleting water mouth erection joint body, fittings body is divided into two distributed water pipes, and a distributed water pipe is communicated with little body cavity, and another distributed water pipe connects solenoid valve water intake joint, solenoid valve water outlet joint water receiving pipe is to the logical inner chamber of little valve body joint, and little body cavity has osculum to lead to the piston cylinder chamber.

Stop valve control mechanism of the present utility model adopts guide's opening structure form, as pilot valve, has drain port adapter to lead to the valve body water outlet through return pipe by manual little valve or solenoid valve on its solenoid valve.

Stop valve control mechanism of the present utility model, its flap connects gland, and valve rod links to each other with flap is flexible.

The utility model discloses a kind of stop valve control mechanism, control mechanism can be by electronic or manual.When electronic, only need give the solenoid valve signal, the solenoid valve action by the fittings body water inlet of valve inleting water mouth, is arrived piston cylinder chamber to little body cavity through osculum through distributed water pipe.The cross section of piston utilizes same hydraulic action poor in the active force of different cross section greater than the flap cross section in the piston cylinder, makes piston overcome spring force and the pressure that acts on the flap, valve rod moves down, back down flap, promptly the sealing surface of flap and valve body is separated, and makes the circulation of water intake and water outlet.In the time of manually, open handwheel,, finish the circulation of water intake and water outlet equally as long as turn over smaller angle.Therefore, compared with the prior art, this valve not only has electronic, dual-use manual, and on the structure be electronic, manually drive control mechanism, again by water intake and the water outlet conducting of control mechanism decision valve body or separate, reach out valve or pass valve purpose.Operate light, rapid; Realize monitoring automatically; Sealing is reliable, and this valve is to belong to normally close valve, and active force and reaction force principle are set on the structure, makes characteristics such as having closed reliable sealing for a long time.

Fig. 1 is the structural representation of the utility model stop valve installation and control mechanism;

Fig. 2 is the utility model stop valve installation and control mechanism plan view;

Fig. 3 is that the utility model stop valve installation and control A of mechanism is to schematic representation.

Below in conjunction with Fig. 1-Fig. 3 embodiment of the present utility model is done detailed explanation:

1, valve body; 2, valve inleting water mouth; 3, flap; 4, gland; 5, seal ring; 6, valve rod; 7, valve body water outlet; 8, piston cylinder; 9, spring; 10, piston; 11, cylinder chamber; 12, fittings body; 13, distributed water pipe; 14, solenoid valve; 15, handwheel; 16, small valve-rod; 17, little valve body; 18, little body cavity; 19, little valve body joint; 20, osculum; 21, flange; 22, return pipe; 23, solenoid valve drain port adapter; 24, solenoid valve water supply connector; 25, distributed water pipe; 26, solenoid valve joint.

The utility model relates to valve, particularly relates to the control mechanism of stop valve, and it is supporting to be particularly useful for fire hydrant.Water intake 2 and water outlet 7 are arranged on valve body 1, flap 3 is installed in the water intake 2 of valve body 1, flap 3 connects glands 4, and seal ring 5 is arranged, and flap is normally closed following, the water of water intake 2 can not flow to water outlet 7, flap 3 and valve rod 6 one is by gland 4 and jump ring is flexible links to each other, valve rod 6 other ends connection piston 10, and piston 10 is in piston cylinder 8, spring 9 is arranged between piston and the piston cylinder, make piston push cylinder chamber 11 to.Valve body 1 upper end adpting flange 21 is equipped with little valve body 17 on the flange, be equipped with small valve-rod 16 in the little valve body, and small valve-rod the outside is equipped with handwheel 15.Osculum 20 is arranged in the flange 21, and 20 1 of osculums are communicated with piston cylinder chamber 11, and the other end leads to little body cavity 18.When valve is normally closed, little body cavity 18 does not have hydraulic pressure, in valve body 1 water intake, be equipped with fittings body 12, fittings body 12 connects two distributed water pipes 13,25, one distributed water pipes 13 are sealed by small valve-rod 16 heads to little valve body 17, as shown in Figure 1, when handwheel 15 rotates, make little valve body close the solenoid valve floss hole, water just flows through distributed water pipe 13 and is pressed into little body cavity 18, flow to osculum 20 in cylinder chamber 11, hydraulic pressure in the cylinder chamber 11 equate with flap 3 hydraulic pressure outward, but piston 10 sanction areas are more much bigger than flap 3 sectional areas, and the active force of water pressure pushing piston is greater than the active force of water pressure pushing flap, the cylinder chamber enlarges, to moving down, spring 9 is compressed piston 10 as Fig. 1, and flap 3 leaves and seals, water is pressed to water outlet 7 from water intake 2, this is manually to open the valve process, and handwheel rotates smaller angle, relies on control mechanism that valve is opened.Because of another distributed water pipe 25 of fittings body 12 to solenoid valve water supply connector 24, as long as to signal of solenoid valve, solenoid valve moves at once, current direction solenoid valve water output connector 26, enter little body cavity 18 through little valve body joint 19, from little body cavity 18 through osculum 20 in cylinder chamber 11, reach the electronic valve purpose of opening, can realize automatic monitoring.When handwheel 15 dextrorotation drive small valve-rod 16 water hole of distributed water pipe 13 is stopped up, under spring 9 power effects, water is discharged in the cylinder chamber 11, moves on the piston, makes flap 3 close water intake.Same closed electromagnetic valve is through being: the water intake in the solenoid valve 14 is closed, the water outlet of solenoid valve communicates with another floss hole, water in the piston cylinder chamber from floss hole enters valve body water outlet 7 to the solenoid valve water outlet through the solenoid valve inner chamber through little valve body joint 19, move on the piston 10, cylinder chamber 11 dwindles, and makes flap 3 close water intake.

Claims (3)

1, the stop valve control mechanism, a valve body is arranged, water intake and water outlet are arranged in the valve body, flap and valve rod are installed in valve body, and handwheel arranged, flap is controlled by one group of control mechanism and is opened or closed, it is characterized in that so-called control mechanism is a connection flap (3) of valve rod (6), connect piston (10) on the other end of valve rod (6), piston has piston cylinder (8) outward, mounting spring (9) between piston (10) and the piston cylinder (8), valve body (1) adpting flange (21) has little valve body (17) on the flange, logical small valve-rod (16) in the little valve body, the small valve-rod other end connects handwheel (15), and at valve inleting water mouth (2) erection joint body (12), fittings body is divided into two distributed water pipes (13,25), a distributed water pipe (13) is communicated with little body cavity (18), another distributed water pipe (25) connects solenoid valve water intake joint (24), and solenoid valve water outlet joint (26) water receiving pipe is to the logical inner chamber (18) of little valve body joint (19), and little body cavity (18) has osculum (20) to piston cylinder chamber (11).

2, stop valve control mechanism as claimed in claim 1 is characterized in that having on the solenoid valve (14) drain port adapter (23) to arrive valve body water outlet (7) through return pipe (22).

3, stop valve control mechanism as claimed in claim 1 is characterized in that flap (3) connects gland (4), and valve rod (6) links to each other with flap (3) is flexible.

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