CN2226182Y - Multifunctional check valve - Google Patents

Abstract

The utility model relates to a cone noise eliminating check valve. A piston shank is arranged on an installation support on a valve body; a slow-closing piston is arranged on the top part of the piston shank and a sessile chamber spring is arranged in the slow-closing piston; a sessile chamber cap is connected with a piston cylinder; a flow passage is processed on the piston shank; a regulating close is arranged on the installation support; a seal is respectively arranged on the inner side of an inlet flange and on the joint section of the sessile chamber cap and the piston cylinder. The utility model has the characteristics of simple structure and principle, multiple functions, reliable performance, low cost, etc.

Description

Multifunctional non-return valve

The utility model relates to a kind of improvement of cone damping check valve.

The multiple Tiny Drag Slow Shut Check Valves of Ying Yonging in the market, function singleness, and the micro-resistance slowly-closed function is undesirable, I declare and have obtained the cone damping check valve of power, and the patent No. is 94231443.3, has solved the problems referred to above, but still exist complex structure, defectives such as function imperfection.

The opening and closing speed, switching degree that the utility model purpose provides the many and valve of a kind of function be adjustable multifunctional non-return valve arbitrarily.

The utility model is by valve body, piston cylinder, piston handle, the Slow Close plug, modulating valve, runner, sealing is formed, moving cylinder type piston handle is installed on the scaffold that is positioned on the valve body, the top of piston handle is provided with piston, be provided with stockless chamber spring in the middle of piston groove 5, and be positioned at the stockless chamber, the stockless chamber lid of spring top flap links to each other with piston cylinder, be provided with Slow Close plug spring in the one side lower part groove of piston, Slow Close is processed with the Slow Close runner beyond the Great Wall, between piston and cylinder body, be provided with the handle chamber, be separately installed with modulating valve on the scaffold, being processed with modulating valve on the scaffold advances, water outlet is processed with on the piston handle and closes runner soon, the Slow Close runner, limit is opened runner, and valve body suction flange inboard is provided with stationary seal ring, stockless chamber lid is provided with motive sealing with the joint of piston cylinder, and the flap indicator of opening is installed on the valve wall; Between moving plug type flap and the cylinder body spring is installed, is processed with runner on the piston cylinder, having in the handle chamber of piston handle bottom is processed with piston, and the piston top is equipped with Slow Close plug and spring; The front portion of modulating valve is provided with spring.

The utlity model has following advantage:

Many merits valve adopt axially, two kinds of seal form radially, reduced flow resistance coefficient, improved the important performance of many merits valve energy saving.Owing to change radial seal into, make it reduce 20% than the flap diameter of the axial seal of same specification, the baffling angle to valve wall direction when making liquid stream through flap has reduced, and the energy loss that changes the liquid flow path direction has reduced.

2. reducing of flap diameter not only reduced the material and the volume of flap itself, reduced the overall sizes and the weight of valve body accordingly.Installing space and beautiful shape (the maximum diameter place of valve body is less than the standard flange at two ends) have also been saved simultaneously.

3. many merits valve has been cancelled two ad hoc limits of Cone valve and has been opened piston pair, and it is effectively simple more to make restriction open the function of valve.

4. in order to guarantee to limit out the operability of function, increase variable capacity, original single Slow Close piston pair, change two-way ram into: the piston cylinder that an original end is open is added a cover sealing, thereby original piston cylinder is divided into two controlled chambeies (handle chamber and stockless chamber are arranged).According to design idea to the configuration of handle chamber and stockless chamber runner and modulating valve are arranged, under the effect of dynamic pressure, static pressure and spring that liquid flows, make two in the controlled chamber medium person who lives in exile, outflow, fast stream, slug flow, stop to flow, flowing first quick and back slow, do not open to reach flap, be not related to, Slow Close, slowly open, close soon, open soon, the purpose of closing valve automatically first quick and back slow.Many merits valve not only has the safety check function, by the location to flap, possesses the function of regulating flow fully.Still find no at present the safety check of this function; This valve not only possesses the Slow Close function, can also close earlier the back Slow Close soon, and the section of closing soon that has overcome Tiny Drag Slow Shut Check Valves is nonadjustable shortcoming, and many merits valve is that the section of closing or Slow Close section all are adjustable soon.Not only for this reason, many merits valve also has a critical function, and it can slowly drive valve by the speed that mixes up in advance, the harmful effect of the excessive and water hammer of pump motor inrush current when eliminating turn on pump.It has replaced opening electric gate valve and electronic dish valve slowly behind the turn on pump in this.

5. many merits valve is compared with electronic dish valve with electric gate valve, it not only need not second energy, and aspect the adjusting flow, be better than electric gate valve and electronic or manual dish valve, electric gate valve mustn't use under half-open position, the dish valve uses under half-open state, and energy loss has harmful effect to its life-span greatly.

Many merits valve is in standard-sized sheet and half-open position, all the time be a nearly cone or the nearly hemispheroidal fluid of meeting, uniform gap adjustment flow around leaning on, its flap is as a minute fluid, each is to stressed even, seesawing of many merits flap, must be accompanied by the outflow of a control chamber medium or inflow and the inflow or the outflow of the medium in another chamber, that is to say, the flow fluctuation of water transport pipeline can influence gate valve and dish valve, it can not influence many merits valve, and this is because the damping function of the liquid in the piston cavity that many merits flap is linked and the more rational shape of branch fluid flap and gap symmetrically.

6. the switching of many merits valve is that to rely on the water of aqueduct be power, realizes that by the dynamic pressure and the static pressure of water driving valve closes valve, behind starting mode of pump, makes buttoned-up valve open slowly on request, open soon, not open.Can realize above-mentioned requirements with the adjustment modulating valve.The operation of many merits valve is very laborsaving, the first indirect control flap, the secondth, the operation of taking advantage of a situation, in other words, buttoned-up flap, when starting mode of pump, under huge flap total pressure, flap is stressed to be valve opening position, but, can not open in the medium in the control chamber because can not discharging flap, operation is on request the medium in the controlled chamber to be discharged, and discharges the speed of medium certainly and open valve speed to be directly proportional, and just is directly proportional with the aperture of modulating valve.So open that to open little greatly or do not open be exactly quick opening valve, slow drive valve, not drive valve consistent.

On structure, many merits valve not only can the standard-sized sheet full cut-off, can also flap is positioned on the aperture by adjustment, and this location can be adjusted from both direction, locate between the standard-sized sheet from closing the valve state, also can be positioned on a certain aperture the process from full-gear to full cut-off.

Regulate for the ease of aperture, make the definite position of operator's flap directly perceived in valve, ad hoc flap indicator of opening is observed flap position and runnability outside valve.

Accompanying drawing 1 is the moving cylinder type structural representation of the utility model.

Accompanying drawing 2 is the moving plug type structural representation of the utility model.

Below in conjunction with accompanying drawing the utility model is further described, structure of the present utility model and principle are to realize like this, accompanying drawing 1,2 is the utility model flap fully open position, moving cylinder type piston handle 1 is installed on the scaffold 3 that is positioned on the valve body 2, when water pump is out of service, have two to try hard to recommend moving flap and close: one is arranged on the stockless chamber spring 6 in the piston central slot 5, the 2nd, the kinetic pressure of backwater and differential static pressure, under the effect of above-mentioned two power, flap (stockless chamber lid 7) moves to Way in, this must be attended by the capacity reducing in handle chamber 10 and the dilatation in stockless chamber 20, and the medium that replenishes volume is opened runner 17 through modulating valve 12 and limit and flowed in the stockless chambeies from importing and exporting 14; The modulating valve front portion is provided with spring 31, meanwhile, the medium one tunnel that the handle chamber arranged is postponed through intake-outlet 13 and is inaccessiblely discharged the handle chamber is arranged by regulating modulating valve 12 through runner 15, another route Slow Close runner 16 is discharged from another modulating valve the handle chamber, do not shut when 8 ends of piston cylinder before the Slow Close runner 11 of Slow Close plug, be called as the section of closing soon; Cylinder bottom is shut after the Slow Close runner 11, and the speed of row's medium is greatly slow, and the pass valve process of this section is claimed the Slow Close section, is provided with Slow Close spring 9 in the side lower part groove of piston 4, plays the Slow Close effect.Valve is closed in segmentation, is the safety check most important functions.Close the modulating valve of runner 16 at certain some shangguan of Slow Close section, just may obtain on the aperture that flap is positioned at this capacity of reflux, omnidistance if desired a kind of speed is closed valve, will turn off modulating valve 12 before closing valve, regulates and control and locatees with the modulating valve on the runner 16.

Open the valve process and to close valve opposite, when motive sealing 19 contacts with stationary seal ring 18 is full closing state, at this moment close and limit the modulating valve of opening on the runner 17, liquid in the stockless chamber does not have the road and discharges, even switch on the pump, to the flap pressurization, flap can not retreat yet, many merits valve is being carried out the function of gate valve or stop valve at this moment, says it is no problem from structure.

When water pump operation,, carrying out electric brake, butterfly valve function modulating valve furnishing make the liquid in stockless chamber slowly discharge (opening runner 17, modulating valve and import and export 14 through limit drains in the valve body) Here it is Slow Close.Flap after move to a certain aperture, close modulating valve at once and make flap be positioned the down work of corresponding discharge of this aperture, play a part limited flow, it is actually the amount adjusting valve of congenerous.

Fig. 2 is plug type schematic representation, be out valve position on the drawing, between flap 28 and the cylinder body 29 spring 30 is installed, when water pump is out of service,, must be the dilatation that handle chamber capacity reducing and stockless chamber are arranged by the effect of dynamic pressure, differential static pressure and the spring of recirculation water, piston handle 23 advances to inlet body direction, the liquid that the handle chamber is arranged, through two tunnel discharges, the one, drain back in many merits valve through runner 21 modulating valve gateways.Another road is to drain into many merits valve through runner 22, modulating valve gateway, the two-way discharge opeing is the section of closing soon of many merits valve, during the import and export of the runner 21 that covers by spring 27 closed cylinder when Slow Close plug 26 fixing on the piston 25, at this moment the Slow Close section has just begun, and this liquid that is carved with handle chamber 24 can only be imported and exported through modulating valve by runner 22 and discharge; If close a modulating valve, only regulate the valve speed of closing with the another modulating valve, can obtain single quick closing valve process, this single quick closing valve can be indicated by indicator of opening, close modulating valve in a certain position, flap 28 just is positioned herein, reaches to regulate the aperture purpose.Two modulating valve are closed in termination of pumping earlier, have the liquid in handle chamber not discharge, and this moment, this valve was carried out the function of gate valve or stop valve.Above-mentioned have a handle chamber discharge opeing process, and it follows the benefit in stockless chamber to hold process simultaneously, and liquid enters runner from the import and export of another modulating valve.

When flap when contacting with static seal body and motive sealing body, be closed condition, close another modulating valve this moment, the liquid in stockless chamber can not be discharged, even at this moment water pump moves and pressurizes to flap, flap can not retreat, and be exactly the function of carrying out gate valve or stop valve this moment.Control another modulating valve, the liquid in stockless chamber is slowly discharged, delay exactly and open function, after it replaces common starting of pump station in this, the electric brake butterfly valve of mentioning slowly.

In fact moving cylinder type and moving plug type, be one group of reversible equipment, moving many merits of the plug type valve of Fig. 2 is that piston cylinder is fixed on the scaffold of outlet body, moving many merits of the cylinder type valve of Fig. 1 is that piston handle is fixed on outlet body scaffold, though have any different, but realize that above-mentioned a kind of type safety check just very easily associates the design of many merits valve of another type, modulating valve and runner can be arranged on separately on the operating console, if valve body uses under environmental conditionss such as high temperature, harmful, poisonous, radiation, can carry out the switching of remote control valve.

Claims (4)

1. multifunctional non-return valve, be by valve body, piston cylinder, piston handle, the Slow Close plug, modulating valve, runner, sealing is formed, it is characterized in that moving cylinder type piston handle (1) be installed in be positioned on the valve body (2) scaffold (3) on, the top of piston handle is provided with live (4), be provided with stockless chamber spring (6) in the middle of piston groove 5, and be positioned at stockless chamber (20), the stockless chamber lid (7) of spring top flap links to each other with piston cylinder (8), be provided with Slow Close plug spring (9) in the one side lower part groove of piston, Slow Close is processed with Slow Close runner (11) beyond the Great Wall, be separately installed with modulating valve (12) being provided with between piston and the cylinder body on the scaffold of handle chamber (10), being processed with modulating valve on the scaffold advances, water outlet (13), (14) be processed with on the piston handle and close runner (15) soon, Slow Close runner (16), limit is opened runner (17), valve body suction flange inboard is provided with stationary seal ring (18), stockless chamber lid is provided with motive sealing (19) with the joint of piston cylinder, and the flap indicator of opening is installed on the valve wall.

2. according to the described multifunctional non-return valve of claim 1, it is characterized in that between moving plug type flap (28) and the cylinder body (29) spring (30) being installed, be processed with runner (21), (22) on the piston cylinder, having of piston handle (23) bottom is processed with piston (25) in the handle chamber (24), the piston top is equipped with Slow Close plug (26) and spring (27).

3. according to the described multifunctional non-return valve of claim 1, it is characterized in that the front portion of modulating valve is provided with spring (31).

4. according to the described multifunctional non-return valve of claim 1, it is characterized in that modulating valve and runner can be provided with separately.

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