CN202171045U

CN202171045U - Reducing valve

Info

Publication number: CN202171045U
Application number: CN2011202927269U
Authority: CN
Inventors: 金祖贻
Original assignee: SHENZHEN CALUX PURIFICATION TECHNOLOGY Co Ltd
Current assignee: SHENZHEN CALUX PURIFICATION TECHNOLOGY Co Ltd
Priority date: 2011-08-12
Filing date: 2011-08-12
Publication date: 2012-03-21
Anticipated expiration: 2021-08-12

Abstract

The utility model discloses a reducing valve which comprises a front cover, a rear cover and a valve core component, wherein male connectors are arranged at the ends of the front cover and the rear cover; the valve core component comprises a valve core seat, a valve core shaft, a diaphragm and a spring; the valve core seat supports the valve core shaft to slide axially; the spring is sleeved on the valve core shaft; the diaphragm separates a valve cavity and a water outlet cavity in a sealing way; a valve part of the valve core seat is internally provided with a rubber stopper; and the valve core shaft is internally provided with a water flow channel. The utility model provides the small-interface and large-flux reducing valve which can meet the 1/2 interface requirements and large flow requirements; the valve core component adopts a single spring structure, so that the reducing valve is not required to be adjusted repeatedly in the using process; therefore, the problem of asymmetrical elasticity decay of a dual spring structure is thoroughly solved; the water outlet pressure is automatically adjusted; the use is stable and reliable; the use of a user is convenient; and the after-sales working capacity is greatly reduced. The clamping connection mode is adopted at several places of the valve core component, no screw connection is adopted in the valve body, the connection structure is ingenious in design, the mounting is simple and convenient, the material consumption is reduced, and the cost is lowered.

Description

A kind of reduction valve

Technical field

The utility model relates to a kind of reduction valve, more particularly, relates to a kind of reduction valve that is used for the domestic water supply system.

Background technique

Along with the development of economic society, particularly after China's reform and opening-up, the commercial house building in city pushes ahead vigorously like rain the back spring bamboo, and a plurality of at home provinces and cities of villa cluster wherein luxurious, fashion emerge in large numbers, and have reflected that people's index number of price has reached level of developed countries.Along with the industrialized high speed development of urbanization; Water resource pollution may continue to worsen; Both urban and rural residents's health care consciousness improves constantly, and health drinking-water demand is grown with each passing day, and household water filter has become the Chaoyang product of man and nature coordinated development; Water purifier with its environmental protection sanitary economy easily characteristics more and more receive people favor, popularization and application is inexorable trends of current social development in huge numbers of families.The main effect of reduction valve in water supply system is exactly the hydraulic pressure that reduces in the water supply network, in protection industrial and mining enterprise facility, played the part of important role for a long time.Along with popularizing of household water filter, reduction valve has got into civil area, and it plays an important role in protection domestic water equipment and raising domestic water safety, and application prospect widely will be arranged.

The household water filter reduction valve still is the substitute material that the industrial type reduction valve dwindles mostly at present; Mangetic core assembly is continued to use the dual spring structure; The unified adjustment of its elastic force operating mode is dispatched from the factory, and can not adapt to huge numbers of families' hydraulic pressure from the beginning, is on-siteing install and need adjust; Need adjustment regularly in the use, and poppet shaft and intake-outlet be not on same axis; Passage turns round, and water resistance strengthens, sensing sensitivity reduces, and hydraulic pressure can not obtain rapidly discharging the security decreased performance behind the valve.Therefore; Carry out the reduction valve Research on Working; Exploitation adapts to the different hydraulic pressure (0.2Mpa---0.8Mpa scope) of huge numbers of families on performance, avoid adjustment in using, can subtract dynamic pressure, can subtract static pressure again, can also protect the family expenses reduction valve of static pressure (and the dwell time was greater than 24 hours), and the development that promotes the Drinking Water in China cause is had very significant meaning.

At present; Big flow (per minute water flux 10-20 liter) water heater, water purifier begin to get into Chinese family; Manufacturer makes into 1/2 inch interface to the turnover pipe of big flow water heater, water purifier for adaptive family supply pipe (being generally 1/2 inch), but at present; The reduction valve per minute water flux 3-5 liter of 1/2 inch interface on the market adapts to (supplying the one family to use) above-mentioned big traffic requirement far from.

1/2 inch standard thread interface is connected straight-through type pressure reduction structure on the water purifier, and is as shown in Figure 1, and Fig. 2 is the A portion enlarged view of Fig. 1; Water-inlet cavity, valve pocket and the water chamber of the protecgulum 12 of valve and bonnet 17 formation valve bodies are provided with mangetic core assembly, comprising poppet shaft 15, spring 14, diaphragm 16 in the valve pocket; Be provided with plug 13 in the water-inlet cavity, spring 14 and diaphragm 16 are when the medium kinetic energy change; Mangetic core assembly is made accommodation, impels poppet shaft 15 along axial direction front and back displacement, and the distance of auto-control poppet shaft end and plug promptly changes valve opening J; Thereby the water flow pressure that makes water outlet side remains in the setup pressure value of requirement; High-pressure water flow is during through gap J narrow and small in the valve port of reduction valve and the poppet shaft, and flow velocity sharply increases, and causes certain pressure loss thereby consumed most energy; Hydraulic pressure is reduced, reach the usage requirement of water purifier.But because plug 13 is located in the water inlet of 1/2 inch interface of reduction valve, deduct the external diameter of plug again after, it is very narrow that the passage of current just seems, so this is to cause the reason that the flux that do not reach per minute 10-20 premium on currency stream requires.

The model utility content:

The utility model technical problem to be solved: to the deficiency of existing technology; Provide a kind of and can meet above-mentioned 1/2 interface requirement; Can satisfy the big flux reduction valve of little interface of big traffic requirement again: discharge pressure regulate automatically, use reliable and stable, make that reduction valve in use need not to adjust repeatedly, be user-friendly to and also significantly reduce workload after sale.

The technological scheme of the utility model is: reduction valve comprises protecgulum, bonnet, and said protecgulum, bonnet constitute the valve body of reduction valve, establish mangetic core assembly in the said valve body; The end of said protecgulum and bonnet is provided with male connection, and the inner chamber of the male connection of protecgulum is a water-inlet cavity, and the inner chamber of the male connection of bonnet is a water chamber; Valve pocket is located between water-inlet cavity and the water chamber, and said mangetic core assembly is located in the valve pocket, and said mangetic core assembly comprises valve core case, poppet shaft, diaphragm and spring; The base portion of said valve core case is supporting poppet shaft and is being in axial sliding; Said spring housing is contained on the poppet shaft, and said diaphragm is fastened on the rearward end of poppet shaft and with valve pocket and water chamber sealed separation, is provided with plug in the valve portion of said valve core case; Be provided with water flow passage in the said poppet shaft, said valve core case is located in the valve pocket.

Said valve core case is made up of valve portion, ring portion, base portion and outer base portion, wherein, is provided with between valve portion and ring portion and is connected rib, and base portion is connected through the base portion end face with outer base portion, and said plug is located in the valve portion.

Also comprise latch hook, said plug is the cylinder to laminated band groove, and the cavity shape of said groove and the end of latch hook are suitable, and the end of said latch hook is contained in the plug by bag, and the gib head fastener of said latch hook is in the valve portion of said valve core case.

The ring portion outside of said valve core case is provided with groove, and groove is provided with O shape circle.

Said poppet shaft is provided with groove, and groove is provided with O shape circle.

Said poppet shaft is provided with diaphragm support plate, and said spring rear end is on diaphragm support plate, and front end sleeve is on the base portion end face of valve core case.

Also comprise briquetting, an end of said poppet shaft is provided with the hook edge, and said hook edge fastener is on briquetting.

Also be provided with the protruding hook in tail-like location on the outer base portion of said valve core case, the protruding hook in said location is inserted and is embedded on the groove of protecgulum inwall.

Compared with prior art, the utlity model has following advantage:

1) interface of reduction valve under the prerequisite of not overstriking of interface, guarantees the requirement of the big flux of water purifier by the size design of the little interface specification of standard.

2) Placement of clamping is adopted in the mangetic core assembly many places, is not provided with screw in the valve body and connects, and the linkage structure design is ingenious, simple installation and reduce consumptive material and reduce cost.

3) mangetic core assembly adopts single spring structure, thoroughly solves the dual spring structure elastic force asymmetric problem that decays, and does not need regular adjustment in the use, and convenient family uses.Poppet shaft tubular structure, high pressure water inlet be J, the straight-through water outlet of entering tubular valve mandrel through the valve clearance, the sensitivity that has improved the hydraulic pressure sensing mechanism, and also hydraulic pressure can obtain rapidly discharging behind the valve, has avoided the equipment of reduction valve back to suffer impact of water hammer.

4) the steady friction of reduction valve water outlet of the utility model meets household water filter safe handling requirement.

Description of drawings

Fig. 1 is the structural representation that has a kind of reduction valve that on water purifier, uses now;

Fig. 2 is the A portion enlarged view of Fig. 1;

Fig. 3 is the valve core case structural representation of the utility model reduction valve;

Fig. 4 is the B-B cut-away view of Fig. 3;

Fig. 5 is the structural representation of the utility model reduction valve;

Fig. 6 is the structure explosive view of the utility model reduction valve;

Fig. 7 is the utility model reduction valve protecgulum and valve core case mounting structure schematic representation;

Fig. 8 is the poppet shaft structural representation of the utility model reduction valve;

Fig. 9 is another embodiment's of the utility model a structural representation.

Embodiment

Referring to Fig. 3-5, reduction valve constitutes a complete valve body by protecgulum 21 and bonnet 22, comprises the valve pocket that is positioned at the middle part and the water-inlet cavity and the water chamber of both sides.The front portion of protecgulum 21 is 1/2 outside thread interfaces 211; Suitable with the interface of water heater, water purifier; Its internal diameter of the rear portion of protecgulum is much larger than the preceding valve pocket 212 of outside thread interface; In the preceding valve pocket 212 mangetic core assembly is set, mangetic core assembly comprises: valve core case 1, poppet shaft 3, diaphragm 4, O shape circle 5, spring 6, anti-rattler 7, briquetting 8.Valve is made up of the end of plug 2 and poppet shaft 3 between water-inlet cavity and valve pocket.The structure of valve core case 1 is referring to Fig. 3 and Fig. 4; Constitute by valve portion 31, ring portion 32, base portion 33 and outer base portion 34; The cylindrical cavity inlay card of valve portion has plug 2 (referring to Fig. 5 or Fig. 6), and the convexity 311 in the valve portion cooperates with latch hook 11 fixedly is assemblied on the inner chamber of valve portion 31 plug 2.The outside of ring portion 32 is provided with groove, and the O shape circle 5 of built-in sealing usefulness makes valve core case and protecgulum form sealing.In conjunction with Fig. 4, between the outside of the inboard of ring portion and valve portion, be provided with and be connected rib 312, be overall structure by connecting rib with the outside binding of the inboard of ring portion and valve portion, and form a plurality of flow channels.Because valve core case is mounted in the preceding valve pocket of protecgulum; Compare with water-inlet cavity; Before the flux of valve pocket obtain sufficient dilatation, the flux of valve determines by the sectional area of the flow channel of 32 of valve portion 31 and ring portions, will be after master's valve moves to valve pocket in the water-inlet cavity with plug 2; Enlarge flow channel, can reach the flux requirement of per minute 10-20 premium on currency stream.

The base portion 33 and the outer base portion 34 of valve core case are tubular; And be coaxially set, in conjunction with Fig. 5, base portion 33 inner chambers of valve core case are the sliding chambeies of poppet shaft; Between the inner chamber of base portion 33 outsides and protecgulum, form an air cavity, air cavity is built-in with poppet shaft, spring, diaphragm, diaphragm support plate, anti-rattler.Also be provided with four protruding hooks 18 in tail-like location on the outer base portion 34 of valve core case, this is located protruding hook 18 and inserts location on four bayonet sockets 214 that are embedded in protecgulum.Be provided with direction recess 213 from the intracavity bottom of protecgulum along four bayonet socket 214 directions, make the positioning convex of the outer base portion of valve core case get into the bayonet socket internal fixation along direction recess.

Please 5-8 with the aid of pictures, the protecgulum 21 of reduction valve and bonnet 22 butt joints, through four screws 23 that both are fastening; The necked-down end portion of protecgulum 21 and bonnet 22 is equipped with outside thread, is convenient to be connected with the pipeline of water supply system, and the necked-down end portion outside of protecgulum is outside thread interface (being outside thread interface 211); Inner chamber is the water-inlet cavity of valve body, and the inner chamber of the necked-down end portion of bonnet is a water chamber, and the front portion of bonnet is the back valve pocket; Constitute the valve pocket of reduction valve by the preceding valve pocket 212 of the back valve pocket of bonnet and protecgulum, and the water-inlet cavity of reduction valve, valve pocket, water chamber are on same medial axis; Form the valve body of a straight-through type, current flow away in reduction valve and need not turn round.Mangetic core assembly is arranged in the valve pocket, and wherein, valve core case 1 is fixed in the bayonet socket on the protecgulum 21, and built-in O shape circle makes poppet shaft and the sealing of valve core case base portion, prevents that current from leaking, and sees Fig. 7, and groove 35 is established at the top of poppet shaft, built-in O shape circle.The bottom of poppet shaft 3 is provided with diaphragm support plate 37; This diaphragm support plate 37 is diaphragm support plates 37 (platform-like) that are used for support spring 6 and accept spring 6 elastic force effects that stretch out and form from axis body; On the diaphragm support plate of poppet shaft 3, also be with anti-rattler 7; Spring 6 is enclosed within on the poppet shaft 3, and an end is resisted against the base portion end face of valve core case, and the other end is resisted against on the diaphragm support plate 37 of poppet shaft.The rear end of poppet shaft is provided with hook edge 39, and the endoporus and the grab that make poppet shaft pass briquetting compress the also inner edge of seal membrane on the plane of briquetting 8.Poppet shaft one end is inserted in the base portion 33 of valve core case and can slides along the base portion inner wall sealing, the other end through diaphragm 4, briquetting 8 be shelved on bonnet 22 back valve pocket bottom, in conjunction with Fig. 7; Wherein, The outer rim of diaphragm 4 is pressed together on protecgulum 21 and compresses with the seam crossing of bonnet 22 and by screw 23, and the inner edge cross section of diaphragm 4 is for approximate spherical, is pressed on respectively in the groove of briquetting on the rear portion 38 with poppet shaft; The hollow part of poppet shaft is a runner 36, runs through whole poppet shaft.The top of poppet shaft is provided with in preceding valve pocket 212; Narrower position, the front portion of protecgulum is 1/2 outside thread interface 211; Suitable with the interface of water storage tank; The rear portion of protecgulum is the preceding valve pocket 212 of external diameter much larger than the outside thread interface, in the preceding valve pocket 212 mangetic core assembly is set, and constitutes the valve body of a straight-through type.Mangetic core assembly is arranged in the valve pocket that front valve shell and rear valve body surround.Referring to Fig. 6, except that anti-rattler 7, spring 6 metals, other parts of mangetic core assembly all are mouldings, adopt polyoxymethylene (POM) material of high comprehensive performance.

Referring to Fig. 5, after water flow to from water-inlet cavity, current passed flow channel; And get in the runner of poppet shaft from the gap of spool axle head and plug, when high pressure water inlet during through valve clearance (slit) J, flow velocity increases severely; Consumed energy reduces hydraulic pressure, and current get into water purifier from water chamber.One side of diaphragm is born the elastic force effect of spring, and opposite side bears the pressure of current, if formed film counterpressure is greater than the spring force of spring on the useful area of diaphragm; Then promote diaphragm and poppet shaft is upwards moved; Valve clearance (gap between plug and poppet shaft) reduces, otherwise, if the film counterpressure is during less than spring force; Spring will promote diaphragm and poppet shaft to moving down, and the valve clearance increases.When flow was in dynamic change behind the valve, water acted on film back of the body dynamic pressure and the spring force maintenance transient equiliblium that diaphragm produces, and control valve core assembly and valve opening are in the transient equiliblium position.

Water behind reduction valve, the film counterpressure of diaphragm descends rapidly, when flow behind the valve is maximum value; Hydraulic pressure is minimum value behind the valve at this moment; Medium acts on the film counterpressure minimum that diaphragm produces, and the film counterpressure is less than spring force, and spring promotes mangetic core assembly to moving down into limit position; Valve is opened water supply again, and valve opening is in the maximal clearance.At this moment, if water flow reduces, then discharge pressure increases, and valve opening reduces; Otherwise when the water flow increase, then discharge pressure reduces, and valve opening increases; Trace through valve opening changes, and realizes the reduction valve auto-control.

The poppet shaft of the reduction valve of the utility model adopts hollow tubular structures, and current lead directly to the water outlet oral cavity through hollow central siphon, constitute the current dilatation passage of straight-through type reduction valve.Pressure adjustmenting mechanism is single spring structure reduction valve, thoroughly solves the dual spring structure elastic force asymmetric problem that decays; Flow channel is a straight-through type in the valve, and the propagation of pressure that makes water is from medium → diaphragm → valve shaft, and three steps put in place, improved sensing sensitivity.Conditioning function fully by using the aqueous condition auto-control behind the valve, thereby is realized exempting from the water intake of poppet shaft and the formed valve clearance of the distance of plug.

The reduction valve of the utility model can adapt to the difference of tap water pressure, the intake pressure that the discharge pressure behind the reduction valve meets water purifier require (0.05MPa---0.3MPa); And guarantor's static pressure time is no less than 24 hours; Select the reduction valve of the utility model, in installation and using process, need the elastic force size of spring not adjusted.Whole reduction valve except protecgulum with docking of bonnet is screwed, inner remaining linkage structure does not have bolt structure, all adopts the mode of claim-reduction or pressing to connect, and is simple and reliable for structure, easy to assembly.

Embodiment two

Present embodiment provides another kind of fit system to the linkage structure of valve core case and protecgulum on the basis of above-mentioned mode of execution, specific as follows:

Referring to Fig. 9; Be provided with internal thread at preceding cover cavity; On the ring portion 32 cylindrical walls of valve core case, be provided with and the suitable internal thread of protecgulum thread in inner cavity; The valve portion top of valve core case is provided with O shape circle 5, and the valve portion of valve core case forms end face seal between valve pocket and valve core case with the top that O shape circle 5 bears against at preceding cover cavity before making.Owing to adopted screw connection structure, therefore, valve core case can have been cancelled the outer base portion of fixed installation effect, and groove and hole clipping on the corresponding cancellation protecgulum.

Further, because current are to get into the flow channel at poppet shaft center through valve core case, so must be to be tightly connected between poppet shaft and valve core case, therefore, between the base portion inner chamber of the end of poppet shaft and valve core case, be provided with seal with O ring.Because the utility model is the control that realizes valve opening through the moving around of poppet shaft; Under the unsettled situation of the hydraulic pressure of water supply system; Poppet shaft reciprocatingly slides more frequent, therefore, and in order to improve the sliding performance of poppet shaft; At the inboard design of valve core case base portion copper sheathing 331, make O shape circle in copper sheathing, slide more smooth and easy.Copper sheathing 331 and valve core case cast molding and forming combine closelyr for what make copper sheathing and valve core case, and the wall that copper sheathing combines with the valve core case base portion is provided with many annular grooves, can form linkage structure closely during moulding by casting.

Claims

1. a reduction valve comprises protecgulum, bonnet, and said protecgulum, bonnet constitute the valve body of reduction valve; Establish mangetic core assembly in the said valve body, the end of said protecgulum and bonnet is provided with male connection, and the inner chamber of the male connection of protecgulum is a water-inlet cavity; The inner chamber of the male connection of bonnet is a water chamber, it is characterized in that: valve pocket is located between water-inlet cavity and the water chamber, and said mangetic core assembly is located in the valve pocket; Said mangetic core assembly comprises valve core case, poppet shaft, diaphragm and spring, and the base portion of said valve core case is supporting poppet shaft and is being in axial sliding, and said spring housing is contained on the poppet shaft; Said diaphragm is fastened on the rearward end of poppet shaft and with valve pocket and water chamber sealed separation; Be provided with plug in the valve portion of said valve core case, be provided with water flow passage in the said poppet shaft, said valve core case is located in the valve pocket.

2. reduction valve according to claim 1; It is characterized in that: said valve core case is made up of valve portion, ring portion, base portion and outer base portion, wherein, is provided with between valve portion and ring portion and is connected rib; Base portion is connected through the base portion end face with outer base portion, and said plug is located in the valve portion.

3. reduction valve according to claim 2; It is characterized in that: also comprise latch hook; Said plug is the cylinder to laminated band groove; The cavity shape of said groove and the end of latch hook are suitable, and the end of said latch hook is contained in the plug by bag, and the gib head fastener of said latch hook is in the valve portion of said valve core case.

4. reduction valve according to claim 3 is characterized in that: the ring portion outside of said valve core case is provided with groove, and groove is provided with O shape circle.

5. reduction valve according to claim 4 is characterized in that: said poppet shaft is provided with groove, and groove is provided with O shape circle.

6. reduction valve according to claim 4 is characterized in that: said poppet shaft is provided with diaphragm support plate, and said spring rear end is on diaphragm support plate, and front end sleeve is on the base portion end face of valve core case.

7. reduction valve according to claim 6 is characterized in that: also comprise briquetting, an end of said poppet shaft is provided with the hook edge, and said hook edge fastener is on briquetting.

8. reduction valve according to claim 7 is characterized in that: also be provided with the protruding hook in tail-like location on the outer base portion of said valve core case, the protruding hook in said location is inserted and is embedded on the groove of protecgulum inwall.