CN205592452U - Formula of relying on oneself balanced valve - Google Patents

Abstract

The utility model discloses a formula of relying on oneself balanced valve. It by the upper end cover, press the cap, adjust the pole, bedding and padding, valve, go up valve body, disk seat, valve body, diaphragm, bottom end cover, locking cap, pressure regulating axle, spring, spring holder, valve rod, baffle, valve body pads, sealed pad are constituteed down. Adjusting the pole and penetrating the centre bore from the upper end cover main aspects, the double -screw bolt head is twisted and is gone into to correspond screw thread department, valve body, disk seat, valve body pad, lower valve body, baffle, diaphragm and spring holder threaded connection after concreteing, the valve penetrate with the valve rod. Pressure regulating axle screw in bottom end cover, at the pressure regulating axle cylindrical end spring of packing into, the bottom end cover is supporting the diaphragm and is detaining on valve body down, puts into sealed the pad between upper end cover and last valve body, and aliging in the side plane, penetrates the bolt and fasten in assembling the hole, adjust pole output embedding bedding and padding at the upper end cover, twist and go into to press the cap, twist the locking cap at pressure regulating axle thread end. The utility model discloses concatenate in each branch road, adjust by oneself around the setting value to ensure the relatively stable of work torrential flow volume and pressure.

Description

A kind of self-balancing valve

Technical field

This utility model relates to a kind of self-balancing valve.

Background technology

In some industry, due to operating mode reason, medium also exists bigger pressure differential or stream in the various piece of pipeline or container It is poor to measure, for reducing this difference, it is necessary to arrange the components and parts with equilibrium function, in order to regulate the relative equilibrium of each branch pressure, Or the balance of flow is reached by the method for shunting.Its mechanism of action of self-balancing valve is exactly in certain operting differential pressure scope internal control The flow that system is passed through.When increasing such as the pressure reduction before and after valve, automatically close little trick by spool, keep flow not increase；Instead The spool when pressure reduction reduces open greatly, enable flow to be held essentially constant；But when pressure reduction is less than valve normal range of operation, Balanced valve self is not provided that extra pressure head, even if now valve wide open, flow is still low compared with setting value, therefore takes an examination during system design Consider and leave enough rich degree, to guarantee system normal operation.Self-balancing valve be applicable to boiler controller system, cooling water machine group, Heat supply (cold) pipe network water supply system and oil in thermal substation first and second loop, heating station (cold) pipe network, building, The industries such as chemical industry.

Existing self-balancing valve valve upper and lower cavity is all moist chamber, and buffering preloading spring is arranged in media as well, can cause year in year out Spring surface fouling, causes sensitivity decrease or disabler.Moreover initial tension of spring can not adjust, set up by connecting pipe Pressure reduction, fluctuate related frequency, less stable.

Summary of the invention

This utility model changes with working end (outlet plenum) pressure, is automatically adjusted valve aperture around default setting valve, than existing Having technology: spring is arranged on dry district, therefore will not lose efficacy or reduce reaction sensitivity because of spring fouling, service life extends.Bullet Spring pretightning force is adjustable, facilitates the adjustment of system working end pressure；Without arranging connecting pipe, can be according to the pressure of working end demand Or flow precisely arranges initial tension of spring.By the adjusting rod scalable valve port opening upper limit, the fluctuation of flow is made to ease up, operating mode Adaptability improves.The valve arranged performs outfan, except manual adjustable in addition to, automatically control and far in conjunction with actuator is the most practicable Process control.Compact conformation, is simple to manufacture, and debugging is convenient.

In order to solve the problems referred to above, this utility model is achieved through the following technical solutions, and it is by upper end cover, pressure cap, tune Pole, bedding and padding, valve gap, upper valve body, valve seat, lower valve body, barrier film, bottom end cover, locking cap, pressure regulating axis, spring, spring Seat, valve rod, baffle plate, valve body pad, sealing gasket form.Upper end cover, upper valve body, lower valve body, bottom end cover are by metal or nylon material Material manufactures, and upper end cover profile is round platform scalariform, and above and below sets round platform, and center sets through hole, and through hole two ends ream counterbore, at counterbore If screw thread, upper counterbore threads mates with pressure cap screw thread, and lower counterbore screw thread mates with adjusting rod thread head, below round platform and upper valve body Inner chamber interference fits；Upper end cover cylindrical face of cylinder symmetry sets two parallel planes, concordant with upper valve body, lower valve body cylindrical side plane； Upper end cover plane be provided with one group for assembling time wear the through hole of bolt.Upper valve body profile approximates in circular, and one end of centre bore is expanded One counterbore, for installing valve seat and lower valve body；Plane of a loop be provided with one group for assembling time wear the through hole of bolt, it is symmetrical that excircle sets two Side plane, a side plane sets the tapped through hole connecting water inlet pipe.Lower valve body profile approximates in circular, and on the basis of centrage one End sets twice shoulder hole, and for installing baffle plate and barrier film, the other end sets outer step, and step ledge diameter is heavy with upper valve body centre bore Hole is mated.Plane of a loop be provided with one group for assembling time wear the through hole of bolt, excircle sets two symmetrical side planes, and a side plane sets even The tapped through hole of connected water outlet pipe.Bottom end cover is circular shape case, and big end flange diameter coincide with the lower big ladder of valve body, at flange If one group for assembling time wear the through hole of bolt；Small end be provided with install pressure regulating axis screwed hole, be additionally provided with one through with the external world Aperture.Adjusting rod is manufactured by metal material, and one end sets stud head, and screw thread mates, in stud head with upper end cover lower counterbore female thread The heart is provided with blind hole, for guiding and the location of valve rod；The other end of adjusting rod is feed rod, and head sets flat gesture, during to guarantee regulation Can reliable rotation adjusting lever.Valve rod is stepped stem, and small end sets external screw thread and is connected with spring base female thread, and central diameter firmly connects with valve Connecing, big end is dynamic with the blind hole of adjusting rod stud head to be coordinated, and big end sets discharge launder, in order to reduce back pressure and to alleviate impact.Valve seat, Baffle plate is manufactured by metal material, sets the circular pieces of flanging bore centered by valve seat；Baffle plate is to be provided with directed center holes and pressure guide hole Round sheet part；Spring base profile is stepped, and center is provided with internal thread hole, metal material manufacture, outer disk with every Film is cementing or rivets, and junction must seal.Valve is round sheet part, and center sets and the aperture of valve rod consolidation, by metal or Nylon material manufactures；Barrier film is resilient sheet-like part, foil or gluing fiber woven material manufacture.Pressure regulating axis is screw thread Short axle, centre is provided with the axle bumper of limit spring, and one end sets screw thread, threadeds with bottom end cover, and head sets flat gesture；The other end is The cylinder that diameter mates with spring, end sets screw-driver slot.The hexagonal short screw of through hole, through-hole diameter and tune is set centered by pressure cap Pole matched in clearance, screw thread mates with counterbore threads on upper end cover, metal material manufactures.

Assemble: adjusting rod feed rod end is screwed at upper end cover correspondence screw thread from upper end cover big end penetrating into center hole, adjusting rod stud head； Penetrate upper valve body after valve and valve rod being consolidated, valve seat, valve body pad, lower valve body, baffle plate, barrier film firmly connect with spring base screw thread Connect.Pressure regulating axis screwing in bottom end cover from inside to outside, loads spring at pressure regulating axis cylindrical end, the other end of spring entangles spring base, Bottom end cover is buckled on lower valve body against barrier film, between upper end cover and upper valve body, inserts sealing gasket, big for valve rod end is inserted adjusting rod The blind hole of stud head, aligns the side plane of upper end cover, upper valve body, lower valve body, penetrates bolt and fastened in assembly hole； Embedding bedding and padding at upper end cover adjusting rod outfan, be screwed into pressure cap, be screwed into locking cap at the pressure regulating axis end of thread, each junction should be reliable Seal.If when barrier film uses foil material to manufacture, then its junction needs to increase sealing gasket.

Operation principle: being serially connected in by this utility model in each branch road, supply side pressure should be greater than working end demand pressure, by pressure regulation Axial adjustment initial tension of spring is to the setting valve meeting working end operating mode；The higher limit opened by adjusting rod control valve, when valve work Make end pressure increase resist partial spring power after epistege pressure and drive valve gap descending, thus reduce the stream of valve and valve base chamber Logical cross section, and make barrier film both sides set up new dynamic equilibrium, to guarantee that working end flow is relative with pressure stable.In like manner, when When working end pressure reduces, barrier film band movable valve under spring force moves, thus adds the circulation of valve and valve base chamber Cross section, barrier film both sides set up new dynamic equilibrium once again.This utility model will be around setting valve and regulates from Row sum-equal matrix, adjusting rod Valve opening higher limit is in order to avoid the generation of working end moment superpressure state.Manually or electrically rotate also additionally by adjusting rod The closing of valve and valve seat can be realized or open.

Accompanying drawing explanation

The utility model is described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is structure sectional view of the present utility model.

Fig. 2 is the top view of this utility model Fig. 1.

In figure 1, upper end cover；2, pressure cap；3, adjusting rod；4, bedding and padding；5, valve；6, upper valve body；7, valve seat；8、 Lower valve body；9, barrier film；10, bottom end cover；11, locking cap；12, pressure regulating axis；13, spring；14, spring base；15、 Valve rod；16, baffle plate；17, valve body pad；18, sealing gasket；Arrow direction is liquid stream direction.

Detailed description of the invention

Upper end cover (1) profile is round platform scalariform, and above and below sets round platform, and center sets through hole, through hole two ends ream counterbore, counterbore If screw thread, upper counterbore threads mates with pressure cap screw thread, and lower counterbore screw thread mates with adjusting rod (3) thread head screw thread, below circle Platform and upper valve body (6) inner chamber interference fits；Upper end cover (1) cylindrical face of cylinder symmetry sets two parallel planes, with upper valve body (6), Lower valve body (8) cylindrical side plane is concordant；Upper end cover (1) plane be provided with one group for assembling time wear the through hole of bolt.Upper valve body (6) profile approximates in circular, and a counterbore is expanded in one end of centre bore, for installing valve seat (7) and lower valve body (8)；Plane of a loop Be provided with one group for assembling time wear the through hole of bolt, excircle sets two symmetrical side planes, and a side plane sets the screw thread connecting water inlet pipe Through hole.Lower valve body (8) profile approximates in circular, and on the basis of centrage, one end sets twice shoulder hole, for installing baffle plate (16) With barrier film (9), the other end sets outer step, and step ledge diameter mates with the counterbore of upper valve body (6) centre bore.Plane of a loop sets Have one group for assembling time wear the through hole of bolt, excircle sets two symmetrical side planes, and a side plane sets and connects the screw thread of outlet pipe and lead to Hole.Bottom end cover (10) is circular shape case, and big end flange diameter ladder big with lower valve body (8) coincide, and sets one at flange Organizing the through hole for assembling, small end is provided with the screwed hole installing pressure regulating axis (12), is additionally provided with an aperture through with the external world. Adjusting rod (3) is manufactured by metal material, and one end sets stud head, and stud head screw thread mates with upper end cover (1) lower counterbore female thread, Stud head center is provided with blind hole, for guiding and the location of valve rod (15)；The other end of adjusting rod (3) is feed rod, head If flat gesture, can reliable rotation adjusting lever (3) during to guarantee to regulate.Valve rod (15) is stepped stem, and small end sets external screw thread and spring Seat (14) female thread connects, and central diameter is firmly connected with valve (5), and big end is dynamic with the blind hole of adjusting rod (3) stud head to be coordinated, Big end sets discharge launder, in order to reduce back pressure and to alleviate impact.Valve seat (7), baffle plate (16) are manufactured by metal material, valve seat (7) Centered by set the circular pieces of flanging bore；Baffle plate (16) is the round sheet part being provided with directed center holes and pressure guide hole；Spring Seat (14) profile is stepped, and center is provided with screwed hole, metal material manufacture, outer disk and barrier film (9) cementing or Riveting, junction must seal.Valve (5) is round sheet part, and center sets the aperture consolidated with valve rod (15), by gold Belong to or nylon material manufacture.Barrier film (9) is resilient sheet-like part, foil or gluing fiber woven material manufacture.Adjust Last item (12) is threaded stub, and centre is provided with the axle bumper of limit spring (13), and one end sets screw thread, with bottom end cover (10) spiral shell Stricture of vagina connects, and head sets flat gesture；The other end is the cylinder that diameter mates with spring (13), and end sets screw-driver slot.Pressure cap (2) Centered by set the hexagonal short screw of through hole, through-hole diameter and adjusting rod (3) matched in clearance, screw thread counterbore upper with upper end cover (1) Screw thread mates, metal material manufacture.

Adjusting rod (3) feed rod end is screwed into upper end cover (1) from upper end cover big end penetrating into center hole, adjusting rod (3) stud head At corresponding screw thread；Penetrate after valve gap (5) and valve rod (15) are consolidated upper valve body (6), valve seat (7), valve body pad (17), Lower valve body (8), baffle plate (16), barrier film (9) are firmly connected with spring base (14) screw thread.By pressure regulating axis (12) by inner to Outer screw-in bottom end cover (10), loads spring (13) at pressure regulating axis (12) cylindrical end, and the other end of spring (13) entangles spring Seat (14), is buckled in bottom end cover (10) on lower valve body (8) against barrier film (9), at upper end cover (1) and upper valve body (6) Between insert sealing gasket (18), valve rod (15) greatly end is inserted the blind hole of adjusting rod (3) stud head, by upper end cover (1), on Valve body (6), the side plane alignment of lower valve body (8), penetrate bolt in assembly hole and fastened；Regulate at upper end cover (1) Bar (3) outfan embeds bedding and padding (4), is screwed into pressure cap (2), is screwed into locking cap (11) at pressure regulating axis (12) end of thread, respectively Junction should reliably seal.

This utility model is serially connected in each branch road, and supply side pressure should be greater than working end demand pressure, pressure regulating axis (12) adjust Spring (13) pretightning force is to the setting valve meeting working end operating mode；The higher limit opened by adjusting rod (3) control valve (5), When working end pressure increases, barrier film (9) upper cavity pressure resists partial spring power and band movable valve (5) is descending, thus reduces valve Flow area between door (5) and valve seat (7), and make barrier film (9) both sides set up new dynamic equilibrium, to guarantee work The flow of end is relative with pressure stable.In like manner, when working end pressure reduces, barrier film (9) drives under spring force Valve (5) is upper to be moved, thus adds the flow area between valve (5) and valve seat (7), and barrier film (9) both sides are set up once again Play new dynamic equilibrium.

Claims (9)

1. a self-balancing valve, by upper end cover, pressure cap, adjusting rod, bedding and padding, valve, upper valve body, valve seat, lower valve Body, barrier film, bottom end cover, locking cap, pressure regulating axis, spring, spring base, valve rod, baffle plate, valve body pad, sealing gasket form； It is characterized in that spring is arranged on dry district, initial tension of spring is adjustable, it is not necessary to arrange connecting pipe, can according to the pressure of working end demand or Flow precisely arranges initial tension of spring, along with working end pressure changes, can be automatically adjusted valve aperture around default setting valve, Arranging the valve opening upper limit by adjusting rod, make the fluctuation of flow ease up, adaptability for working condition improves；Described upper end cover profile in Round platform scalariform, above and below sets round platform, and center sets through hole, through hole two ends ream counterbore, sets screw thread at counterbore, upper counterbore threads with Pressure cap screw thread mates, and lower counterbore screw thread mates with adjusting rod thread head screw thread, below round platform and upper valve body inner chamber interference fits, on End cap cylindrical face of cylinder symmetry sets two parallel planes, and concordant with upper valve body, lower valve body cylindrical side plane, upper end cover plane is provided with one The through hole of bolt is worn when organizing for assembling；Upper valve body profile approximates in circular, and a counterbore is expanded in one end of centre bore, for installing valve Seat and lower valve body, plane of a loop be provided with one group for assembling time wear the through hole of bolt, excircle sets two symmetrical side planes, a side plane If connecting the tapped through hole of water inlet pipe；Lower valve body profile approximates in circular, and on the basis of centrage, one end sets twice shoulder hole, For installing baffle plate and barrier film, the other end sets outer step, and step ledge diameter mates with the counterbore of upper valve body centre bore, and plane of a loop sets Have one group for assembling time wear the through hole of bolt, excircle sets two symmetrical side planes, and a side plane sets and connects the screw thread of outlet pipe and lead to Hole；Bottom end cover is circular shape case, and big end flange diameter coincide with the lower big ladder of valve body, sets one group and supply to wear when assembling at flange The through hole of bolt, small end is provided with the screwed hole installing pressure regulating axis, is additionally provided with an aperture through with the external world；Valve and valve rod Penetrate upper valve body after consolidation, valve seat, valve body pad, lower valve body, baffle plate, barrier film are firmly connected with spring base screw thread；Bottom end cover supports Barrier film to be buckled on lower valve body, insert sealing gasket between upper end cover and upper valve body, the big end of valve rod inserts the blind hole of adjusting rod stud head, Upper end cover, upper valve body, the side plane alignment of lower valve body, penetrate bolt in assembly hole and fastened.

A kind of self-balancing valve the most according to claim 1, is characterized in that described adjusting rod is manufactured by metal material, One end sets stud head, and screw thread mates with upper end cover lower counterbore female thread, and stud head center is provided with blind hole, for valve rod guiding and Location, the other end of adjusting rod is feed rod, and head sets flat gesture, and adjusting rod feed rod end is from upper end cover big end penetrating into center hole, regulation Bar stud head is screwed at upper end cover correspondence screw thread.

A kind of self-balancing valve the most according to claim 1, is characterized in that described pressure regulating axis is threaded stub, in Between be provided with the axle bumper of limit spring, one end sets screw thread, threadeds with bottom end cover, and head sets flat gesture, and the other end is diameter and bullet The cylinder of spring coupling.

A kind of self-balancing valve the most according to claim 1, is characterized in that described valve rod is stepped stem, and small end sets Screw thread is threadeded with spring base, and central diameter is firmly connected with valve, and big end is dynamic with the blind hole of adjusting rod stud head to be coordinated, and big end sets Discharge launder.

A kind of self-balancing valve the most according to claim 1, sets flanging bore centered by it is characterized in that described valve seat Circular pieces, is manufactured by metal material.

A kind of self-balancing valve the most according to claim 1, is characterized in that described baffle plate is for being provided with directed center holes With the round sheet part of pressure guide hole, metal material manufacture.

A kind of self-balancing valve the most according to claim 1, is characterized in that described spring base profile is stepped, Center is provided with internal thread hole, metal material manufacture, and outer disk is cementing with barrier film or rivets, and junction must seal.

A kind of self-balancing valve the most according to claim 1, is characterized in that described barrier film is resilient sheet-like part, Manufactured by foil or gluing fiber woven material.

A kind of self-balancing valve the most according to claim 1, is characterized in that described upper end cover, upper valve body, lower valve Body, bottom end cover are by metal or nylon material manufacture.