CN205639750U - Formula of relying on oneself balanced valve - Google Patents

Abstract

The utility model discloses a formula of relying on oneself balanced valve. It comprises valve body, bedding and padding, spacing double -screw bolt, pressure cap, valve, disk seat, diaphragm, valve gap, nut, pressure regulating axle, spring, spring holder, screw, baffle, valve rod. The valve concreties on the valve rod, and valve body inner chamber end centre bore is inserted to the valve rod main aspects, and the disk seat valve body of packing into, the apopore aligns with valve body outlet pipe screw hole, and the baffle is gone into to the reload, with spring holder and the wrong income valve rod thread head department of the subassembly of diaphragm. Following the inboard screw hole of twisting the lid and holding of valve gap with the pressure regulating axle, emboliaing the spring at pressure regulating axle cylindrical end, the other end of spring is buckled on the spring holder, and the valve gap card is screwed up valve gap and valve body with the screw in going into the step of valve body, with nut locking pressure regulating axle, twists the spacing double -screw bolt of income at the valve body centre bore, puts into bedding and padding, the pressure of screwing cap. 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 difference in flow in the various piece of pipeline or container, for reducing this difference, it is accomplished by arranging the components and parts with equilibrium function, in order to regulate the relative equilibrium of each branch pressure, or reached the balance of flow by the method for shunting.Its mechanism of action of self-balancing valve is exactly the flow controlling to pass through in the range of certain operting differential pressure.When increasing such as the pressure reduction before and after valve, automatically close little trick by spool, keep flow not increase；Otherwise spool is opened greatly when pressure reduction reduces, flow is enable 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 it is considered as leaving enough rich degree, to guarantee system normal operation during system design.Self-balancing valve is applicable to heat supply (cold) pipe network water supply system and the industry such as oil, chemical industry in boiler controller system, cooling water machine group, thermal substation first and second loop, heating station (cold) pipe network, building.

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 spring surface fouling year in year out, cause sensitivity decrease or disabler.Moreover initial tension of spring can not adjust, the pressure reduction set up by connecting pipe, 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 prior art: spring is arranged on dry chamber, therefore will not lose efficacy or reduce reaction sensitivity because of spring fouling, and service life extends.Initial tension of spring is adjustable, facilitates the adjustment of system working end pressure；Without arranging connecting pipe, initial tension of spring can be precisely set according to the pressure of working end demand or flow.By the spacing stud adjustable gate aperture upper limit, making the fluctuation of flow ease up, adaptability for working condition improves.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 made up of valve body, bedding and padding, spacing stud, pressure cap, valve, valve seat, barrier film, valve gap, nut, pressure regulating axis, spring, spring base, screw, baffle plate, valve rod.Valve body profile is that multi-step is round table-like, metal material manufacture, and the circumference of big step sets symmetrical parallel plane, one side plane sets the tapped through hole connecting water inlet pipe, opposite side plane sets the screwed hole connecting outlet pipe, and the inner chamber of valve body is three layers of shoulder hole, and bottom is through with the screwed hole being connected water inlet pipe；Intermediate layer is through with the screwed hole being connected outlet pipe, and shape chamber diameter excessively coordinates with valve seat, baffle plate cylindrical；The shape chamber diameter of the big step of outermost and the big end of valve gap, barrier film cylindrical matched in clearance；Valve body small end center sets screwed hole, ream counterbore outside screwed hole, for installing pressure cap and bedding and padding, has one section of unthreaded hole, for stem guiding and location inside screwed hole；The big transverse plane of valve body is additionally provided with the screwed hole for installing valve gap.Valve seat cylindrically, is manufactured by metal material, sets a flanging bore at the bottom of cylinder, and barrel sets an apopore, and after assembling, apopore should with valve body outlet screwed hole in line.Valve gap system ladder round platform case, by metal or nylon material manufacture, big end coincide with the big stepped diameters of valve body, and big transverse plane is provided with an assembling timing and wears the through hole of screw, the center of little transverse plane sets a screwed hole mated with pressure regulating axis screw thread, and side is additionally provided with an aperture through with the external world.Spacing stud one end sets the screw thread mated with valve body centre bore screw thread, and the other end is the light circle with pressure cap matched in clearance, and end sets screw-driver slot.Setting the hexagonal short screw of through hole, through-hole diameter and spacing stud matched in clearance centered by pressure cap, screw thread mates with valve body center counterbore threads, metal material manufactures.Valve rod is stepped stem, and small end sets external screw thread and is connected with spring base female thread, and central diameter is firmly connected with valve, and outside diameter is dynamic with valve body centre bore to be coordinated, and big end end sets screw-driver slot.Baffle plate is the round sheet part being provided with directed center holes and pressure guide hole, metal material manufacture；Spring base profile is stepped, and center is provided with screwed hole, metal material manufacture, and outer disk is cementing with barrier film or rivets, and junction must seal.Valve is round sheet part, if the centre bore consolidated with valve rod, by metal or nylon material manufacture；Barrier film is resilient sheet-like part, foil or gluing fiber woven material manufacture.Pressure regulating axis is threaded stub, and centre is provided with the axle bumper of limit spring, and one end sets screw thread, threadeds with valve gap, and head sets flat gesture；The other end is the cylinder that diameter mates with spring, and end sets screw-driver slot.

Assemble: valve loading valve rod strong bonded, then big for valve rod end is inserted body cavity end centre bore, valve seat is loaded valve body, apopore should align with valve body outlet pipe screwed hole, reinstalls baffle plate, is screwed at threaded stem head by the assembly of spring base Yu barrier film；The another screwed hole that pressure regulating axis is screwed into inside valve gap lid end, it is inserted in spring at pressure regulating axis cylindrical end, the other end of spring is buckled on spring base, valve gap snaps in the step of valve body, with screw, valve gap is tightened with valve body, junction needs to seal, if when barrier film uses foil material to manufacture, then its junction needs to increase and seals equalizing bed.Use nut locking pressure regulating axis, be screwed into spacing stud at valve body centre bore, insert bedding and padding, screw pressure cap.

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, is adjusted initial tension of spring to the setting valve meeting working end operating mode by pressure regulating axis；The higher limit opened by spacing stud control valve, partial spring power is resisted and band movable valve is descending after epistege pressure when working end pressure increases, thus reduce the flow area of valve and valve base chamber, and make barrier film both sides set up new dynamic equilibrium, to guarantee that the flow of working end is relative with pressure stable.In like manner, when working end pressure reduces, barrier film band movable valve under spring force moving, thus adds the flow area of valve and valve base chamber, barrier film both sides set up new dynamic equilibrium once again.This utility model will be around setting valve from Row sum-equal matrix, and it is in order to avoid the generation of working end moment superpressure state that spacing stud control valve opens higher limit.

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 upward view of this utility model Fig. 1.

In figure 1, valve body；2, bedding and padding；3, spacing stud；4, pressure cap；5, valve；6, valve seat；7, barrier film；8, valve gap；9, nut；10, pressure regulating axis；11, spring；12, spring base；13, screw；14, baffle plate；15, valve rod；Arrow direction is liquid stream direction.

Detailed description of the invention

Valve body (1) profile is that multi-step is round table-like, manufactured by metal material, the circumference of big step sets symmetrical parallel plane, one side plane sets the tapped through hole connecting water inlet pipe, opposite side plane sets the screwed hole connecting outlet pipe, the inner chamber of valve body (1) is three layers of shoulder hole, and bottom is through with the screwed hole being connected water inlet pipe；Intermediate layer is through with the screwed hole being connected outlet pipe, and shape chamber diameter excessively coordinates with valve seat (6), baffle plate (14) cylindrical；The shape chamber diameter of the big step of outermost and valve gap (8) end, barrier film (7) cylindrical matched in clearance greatly；Valve body (1) small end center sets screwed hole, ream counterbore outside screwed hole, for installing pressure cap (4) and bedding and padding (2), has one section of unthreaded hole, guide for valve rod (15) and position inside screwed hole；The big transverse plane of valve body (1) is additionally provided with the screwed hole for installing valve gap (8).Valve seat (6) cylindrically, is manufactured by metal material, sets a flanging bore at the bottom of cylinder, and barrel sets an apopore, and after assembling, apopore should with valve body (1) outlet screwed hole in line.Valve gap (8) is ladder round platform case, by metal or nylon material manufacture, big end stepped diameters big with valve body (1) is coincide, big transverse plane is provided with an assembling timing and wears the through hole of screw (13), the center of little transverse plane sets a screwed hole mated with pressure regulating axis (10) screw thread, and side is additionally provided with an aperture through with the external world.Spacing stud (3) one end sets the screw thread mated with valve body (1) centre bore screw thread, and the other end is the light circle with pressure cap (4) matched in clearance, and end sets screw-driver slot.Setting the hexagonal short screw of through hole, through-hole diameter and spacing stud (3) matched in clearance centered by pressure cap (4), screw thread mates with valve body (1) center counterbore threads, metal material manufactures.Valve rod (15) is stepped stem, and small end sets external screw thread and is connected with spring base (12) female thread, and central diameter is firmly connected with valve (5), and outside diameter is dynamic with valve body (1) centre bore to be coordinated, and big end end sets screw-driver slot.Baffle plate (14) is the round sheet part being provided with directed center holes and pressure guide hole, metal material manufacture；Spring base (12) profile is stepped, and center is provided with screwed hole, metal material manufacture, and outer disk is cementing with barrier film (7) or rivets, and junction must seal.Valve (5) is round sheet part, if the centre bore consolidated with valve rod (15), by metal or nylon material manufacture；Barrier film (7) is resilient sheet-like part, foil or gluing fiber woven material manufacture.Pressure regulating axis (10) is threaded stub, and centre is provided with the axle bumper of limit spring (11), and one end sets screw thread, threadeds with valve gap (8), and head sets flat gesture；The other end is the cylinder that diameter mates with spring (11), and end sets screw-driver slot.

Assemble: valve (5) is loaded valve rod (15) strong bonded, then valve rod (15) end greatly is inserted valve body (1) lumen end centre bore, valve seat (6) is loaded valve body (1), apopore should align with valve body (1) outlet pipe screwed hole, reinstall baffle plate (14), the assembly of spring base (12) Yu barrier film (7) is screwed at valve rod (15) thread head；Separately pressure regulating axis (10) is screwed into from valve gap (8) inner side the screwed hole of lid end, it is inserted in spring (11) at pressure regulating axis (10) cylindrical end, the other end of spring (11) is buckled on spring base (12), valve gap (8) snaps in the step of valve body (1), with screw (13), valve gap (8) is tightened with valve body (1), junction needs to seal, if when barrier film (7) uses foil material to manufacture, then its junction needs to increase and seals equalizing bed.With nut (9) locking pressure regulating axis (10), it is screwed into spacing stud (3) at valve body (1) centre bore, inserts bedding and padding (2), screw pressure cap (4).

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 (10) adjust spring (11) pretightning force to the setting valve meeting working end operating mode；The higher limit opened by spacing stud (3) control valve (5), when working end pressure increases, barrier film (7) upper cavity pressure resists partial spring power and band movable valve (5) is descending, thus reduce the flow area between valve (5) and valve seat (6), and make barrier film (7) both sides set up new dynamic equilibrium, to guarantee that the flow of working end is relative with pressure stable.In like manner, when working end pressure reduces, barrier film (7) band movable valve (5) under spring force is upper to be moved, thus adding the flow area between valve (5) and valve seat (6), barrier film (7) both sides set up new dynamic equilibrium once again.

Claims (2)

1. a self-balancing valve, is made up of valve body, bedding and padding, spacing stud, pressure cap, valve, valve seat, barrier film, valve gap, nut, pressure regulating axis, spring, spring base, screw, baffle plate, valve rod, it is characterized in that spring is arranged on dry chamber；Described valve seat cylindrically, is manufactured by metal material, sets a flanging bore at the bottom of cylinder, and barrel sets an apopore, and after assembling, apopore should with valve body outlet screwed hole in line；Valve gap system ladder round platform case, by metal or nylon material manufacture, big end coincide with the big stepped diameters of valve body, and big transverse plane is provided with an assembling timing and wears the through hole of screw, the center of little transverse plane sets a screwed hole mated with pressure regulating axis screw thread, and side is additionally provided with an aperture through with the external world；Spacing stud one end sets the screw thread mated with valve body centre bore screw thread, and the other end is the light circle with pressure cap matched in clearance, and end sets screw-driver slot；Setting the hexagonal short screw of through hole, through-hole diameter and spacing stud matched in clearance centered by pressure cap, screw thread mates with valve body center counterbore threads, metal material manufactures；Valve rod is stepped stem, and small end sets external screw thread and is connected with spring base female thread, and central diameter is firmly connected with valve, and outside diameter is dynamic with valve body centre bore to be coordinated, and big end end sets screw-driver slot；Baffle plate is the round sheet part being provided with directed center holes and pressure guide hole, metal material manufacture；Spring base profile is stepped, and center is provided with screwed hole, metal material manufacture, and outer disk is cementing with barrier film or rivets, and junction must seal；Valve is round sheet part, if the centre bore consolidated with valve rod, by metal or nylon material manufacture；Barrier film is resilient sheet-like part, foil or gluing fiber woven material manufacture；Pressure regulating axis is threaded stub, and centre is provided with the axle bumper of limit spring, and one end sets screw thread, threadeds with valve gap, and head sets flat gesture；The other end is the cylinder that diameter mates with spring, and end sets screw-driver slot；Valve rod consolidates with valve, and the big end of valve rod inserts body cavity centre bore, and valve seat loads valve body, and apopore aligns with valve body outlet pipe screwed hole.

A kind of self-balancing valve the most according to claim 1, it is characterized in that described valve body profile is that multi-step is round table-like, manufactured by metal material, the circumference of big step sets symmetrical parallel plane, one side plane sets the tapped through hole connecting water inlet pipe, opposite side plane sets the screwed hole connecting outlet pipe, and the inner chamber of valve body is three layers of shoulder hole, and bottom is through with the screwed hole being connected water inlet pipe；Intermediate layer is through with the screwed hole being connected outlet pipe, and shape chamber diameter excessively coordinates with valve seat, baffle plate cylindrical；The shape chamber diameter of the big step of outermost and the big end of valve gap, barrier film cylindrical matched in clearance；Valve body small end center sets screwed hole, ream counterbore outside screwed hole, and the big transverse plane of valve body is provided with the screwed hole for installing valve gap.