CN2558821Y

CN2558821Y - Leakless straight-way valve

Info

Publication number: CN2558821Y
Application number: CN 01275995
Authority: CN
Inventors: 王希平; 张碧竹
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-07
Filing date: 2001-12-07
Publication date: 2003-07-02
Anticipated expiration: 2011-12-07

Abstract

The utility model relates to a 'straight valve without leakage' with simple structure, long service life and low cost, which consists of a two-way valve body, a magnetic movable valve plate, a ceramic fixed plate, an elastic sealing pad and an operational sleeve with pole shoes, which are all made of non magnetic materials. The valve adopts a magnetic line directly drives the movable valve plate to rotate through a wall of the valve body, thus controlling fluid. Since the valve body is closed, hidden trouble of leakage is absolutely avoided. The utility mode has the advantages of simple structure, no high requirements to processing precise and low production cost, etc., and is especially applicable to the departments of chemical engineering, medicine and petroleum industry, etc. with strict requirement to the leakage, thus having wide utilizing prospect.

Description

There is not the throughway valve of leakage

The utility model discloses a kind of nothing and leaks the throughway valve structure, belongs to the five metals plumbing.

Valve is the most general a kind of utensil that is used to control the fluid break-make.The various valves that extensively adopt all are provided with the hole that falls in flow direction as ball valve, butterfly valve etc. at present, with the axle of installation and control moving valve plate, need to adopt seal approach to prevent leakage, but wearing and tearing and material ageing etc. all can cause seal failure.Patent ZL98241826.4 disclosed " not having the long-acting many valves of use of axle envelope Ceramic mill disc " is to utilize the precision-fit between the ceramic valve plate end face to prevent to leak, and thisly realizes sealing with slip surface, still has leakage hidden danger, is unsafe for the control of hazardous fluids.

For this reason, the utility model discloses a kind of simple for structure, long lifetime, does not have the throughway valve of leakage cheaply, can solve the external leakage problem fully.

The purpose of this utility model is achieved like this:

A kind of nothing is leaked throughway valve, two-way valve body by the band step hole, the disc moving valve plate, central shaft, the ceramic disks shape fixed valve plate of band fan shaped borehole, the elastic ring sealing gasket, composition such as inipple and operating sleeve, moving valve plate is installed between two fixed valve plates, central shaft is tightly packed in the moving valve plate center hole, its two axial ends is inserted respectively and is formed the spool group in the fixed valve plate center hole, pack in the lump in the valve body, make with elastic sealing gasket, fixed valve plate is adjacent to mutually, the operating sleeve pine is enclosed within on the valve body, it is characterized in that: the two-way valve body is made by non-magnet material, no any break-through groove on the wall, the hole; Moving valve plate to small part is made by magnetic material, corresponding to the moving valve plate position, in the operating sleeve outside the valve body, is symmetrically installed with the pole shoe that the pair of magnetic material is made, and moving valve plate and pole shoe have at least one to be made by permanent-magnet material.

Moving valve plate is made " X " type or nearly eel-like figure galleyproof type by magnetic material (as high strength rubidium ferroboron), and moving valve plate is through antirust corrosion-resistant treatments, and two sealing surfaces have very high degree of finish, flatness and being parallel to each other property.

Moving valve plate, fixed valve plate all have center hole, and wherein the moving valve plate center hole is slightly less than the central shaft diameter, and the fixed valve plate center-hole diameter is slightly larger than the central shaft diameter; The moving valve plate external diameter is slightly less than the fixed valve plate outside diameter.

Operating sleeve is made by non-magnet material, and the pole shoe bar is made by magnetic material.The pole shoe bar can be two separation, also can be made into the annular with relative pole shoe, and the inner arc surface of pole shoe and moving valve plate magnetic pole cambered surface have identical radian measure.

During valve working, the valve block wear extent is minimum, and reason is: 1. the valve block material has very high wear resistance: its working surface is machined to very high degree of finish, and the contact pressure between general valve face is not high, so frictional resistance is little.2. the switching path of valve is little, and the valve block relative rotation generally is not more than 90 degree, and relative velocity is low.3. switching frequency was not high when general valve used.4. at the fixed valve plate two ends elastic sealing gasket is housed, except playing the static sealing effect, also can compensates the gap between the valve block.Promptly when moving valve plate during because of the wearing and tearing attenuate, elastic sealing gasket will promote fixed valve plate and move vertically, until closely contacting with moving valve plate, even thereby have small amount of wear also not influence the function of spool group.

So adopt the moving valve plate of high strength Hard Magnetic material can satisfy the use long lifetime requirement of valve.

For reducing the steering force distance of moving valve plate rotation, the moving valve plate external diameter of this valve is slightly less than the fixed valve plate external diameter, and the fixed valve plate external diameter is slightly less than valve body inner bore.Fixed in the spool group simultaneously, moving valve plate center all is processed with axial bore.Central shaft is through three valve block central authorities vertically.Like this, after installing, having guaranteed has certain interval between moving valve plate cylindrical and valve body inner bore wall.When the rotation moving valve plate, moving valve plate will rotate around central shaft, and not rub with hole wall, thereby make rotation lighter reliable.

Be to solve along the axial leakage of valve block center hole with the axle cooperation place, the moving valve plate center hole is slightly less than the central shaft diameter, and the fixed valve plate center bore is slightly larger than the central shaft diameter, and central shaft and moving valve plate is press-fitted be integral.Moving valve plate drives central shaft and rotates in the center hole of fixed valve plate during use, thereby has blocked along the leakage way of central shaft hole and improved the running accuracy of moving valve plate.

The pole shoe bar also can be made part ring-type shape by hard magnetic material, and the shared radian of its annular circular arc is suitable with the shared radian of the fan-shaped magnetic pole of moving valve plate, and its thickness can be a bit larger tham moving valve plate thickness.Two pole shoes are installed in the interior hole slot of the operating sleeve of being made by non-magnet material symmetrically.After the valve assembling was finished, the valve body wall that two pole shoes in the operating sleeve are made through non-magnet material attracted mutually with two fan-shaped magnetic poles of moving valve plate respectively.The rotary manipulation cover, two pole shoes on it drive the moving valve plate rotation.When moving valve plate forwards " opening " position to, be that the moving valve plate sector leaves the fixed valve plate liquid-through hole, realize flowing of valve body inner fluid: when moving valve plate forwards the off-position to, when promptly moving valve plate sector and fixed valve plate liquid-through hole are overlapping, fluid is blocked, and has promptly realized the switching control of valve convection cell

The utility model is described in further detail below in conjunction with legend:

Fig. 1 does not have the throughway valve of leakage structural representation.

Fig. 2 does not have the throughway valve of leakage moving valve plate structural drawing.

Fig. 3 does not have the throughway valve of leakage fixed valve plate structural drawing.

Fig. 4 does not have the throughway valve of leakage valve body structure schematic representation.

Fig. 5 does not have the throughway valve of leakage operating sleeve structural representation.

Fig. 6 does not have the throughway valve of leakage pole shoe bar structural representation.

Fig. 7 does not have the throughway valve of leakage combination moving valve plate structural representation.

Fig. 8 does not have the throughway valve of leakage integrated type pole shoe ring structural representation.Marginal data is as follows: 1. valve body: 11. work peripheries, 12. front-end faces, 13. inner threaded surface, 14. interior edge faces

15. spacing end face 16. liquid-through holes 17. positive stop lug boss 18. locating slots

19. work endoporus.2. operating sleeve: 21. pole shoe bar grooves, 22. endoporus, 23. cylindricals, 24. end faces

25. handgrip 26. corner restraining grooves 3. pole shoe bars: polar surface 32. outer polar surface 33. side end faces in 31.

34. magnetic guiding loop 35. salient pole boots 36. locating slots 4. inipples 5. elastic sealing gaskets 6. fixed valve plates: 61. liquid-through holes, 62. center holes, 63. peripheries, 64. directed boss

65. seal face 66. non-working surfaces 7. moving valve plates: 71. sealed working faces, 72. center holes, 73. logical liquid baths

74. water resistant plate 75. cylindrical 7A. substrate 7B. magnetic tablets 8. central shafts

Fig. 1 is that this nothing is leaked the throughway valve structural representation.

Operating sleeve 2 skies that have pole shoe 61 are enclosed within work cylindrical 11 surfaces of valve body 1, and can easily rotate.Its rotation angle is limited by the positive stop lug boss on the valve body 17.The mark of correlation (not shown) is arranged with clear and definite " opening ", off-position on operating sleeve 2 and valve body 1 surface.When rotating operation cover 2 arrives the off-position, because magnetic force, pole shoe 3 will drive moving valve plate 7 and rotate thereupon, forward state shown in Fig. 1 top to.The liquid-through hole 61 of moving valve plate 7 blocking-up fixed valve plates 6, cut-off valve.Otherwise, forwarding operating sleeve 2 to " opening " position, fixed valve plate 7 is driven the state shown in Fig. 1 Lower Half that forwards to by pole shoe bar 3, and promptly moving valve plate 7 logical liquid baths 73 are aimed at the liquid-through hole 61 of fixed valve plate 6, make fluid pass through valve smoothly.

Valve body 1 is made by non-magnetic material (as: brass, stainless steel, high-strength engineering plastic etc.).Liquid-through hole 16 is processed with locating slot 18 less than spool group pilot hole 19 on pilot hole 19 walls, orientation when being convenient to fixed valve plate 6 assemblings.The front end of pilot hole 19 is tapped holes 13, is convenient to be connected with inipple 4.The distance that end face 12 and interior edge face are 14 should guarantee to have assembled (Fig. 1) after the spool group, screws inipple 4, each elastic packing

Pad 5 should have certain decrement (0.5～1mm), along with hydrodynamic pressure increases, should increase decrement, guaranteeing the sealing between valve block, and the compensation gap that may occur in using automatically.The wall thickness that valve body work cylindrical 11 and endoporus are 19 is thinner, has guaranteed that 7 of pole shoe 3 and moving valve plates have enough magnetic attractions.Be shaped on positive stop lug boss 17 at cylindrical 11 with 15 places, exterior edge face, can limit operating sleeve 2 maximum rotation angles.

Moving valve plate 7 is made by magnetic material.And make " X " type (or other can form the shape of directed polarity).Select strong magnetic material and magnetize (as shown in Figure 2) along long axis direction.The covering of the fan 74 that blocks water becomes two utmost points of magnet.Two end faces 71 of moving valve plate 7 are working seal end faces, and higher flatness, degree of finish and parallelism precision requirement should be arranged.Moving valve plate 7 has center hole 72, and its diameter is slightly less than the diameter of central shaft 8, closely cooperates so that form when packing central shaft 8 into, stops fluid along center hole 72 and central shaft 8 fitting surface generation axial leakages.The external diameter of moving valve plate 7 is slightly less than the external diameter of fixed valve plate 6, guarantees that moving valve plate 7 does not contact the generation friction when rotating and increases rotational resistance with the inwall 19 of valve body 1.Fixed valve plate 7 is made whole antirust corrosion-resistant treatments (as zinc-plated, nickel plating etc.).For control media is the fluid of severe corrosive, adopts integral coating macromolecule erosion resistant (as polyethylene, polytetroxide ethene etc.).

Moving valve plate 7 also can be made composite structure by Fig. 7, and 7A makes (as pottery, high-strength engineering plastic or other metal) by non-magnetic material.Respectively inlay a magnet steel (magnetic direction is same as shown in Figure 2) 7B at the core of two water resistant plates 74, can give full play to wear resistance, the corrosion resistance (as pottery) of matrix 7A material, the shape of substrate 7A also can be made into " X " type.

Fixed valve plate 6 is made by pottery, has the liquid-through hole 61 of fan-shaped or other shape, and there is axis hole 62 at the center, and the internal diameter in hole 62 is slightly larger than the diameter of central shaft 8, is convenient to its insertion and rotation.Hole 62 can be straight hole or blind hole, and the opening end of blind hole should be on working surface 65, and working surface 65 is fine finishing, the high smooth finish surfaces that cooperate with the working surface 71 of moving valve plate 7, and non-working surface 66 can not done fine finishing and handle.Periphery 63 slightly larger in diameter of fixed valve plate 6 are in the external diameter of moving valve plate 7.Be symmetrical arranged two square or half-circle projection 64 on the periphery 63, orientation when being convenient to be installed to fixed valve plate on the valve body 1.

Pole shoe bar 3 as shown in Figure 6, pole shoe bar 3 can be made by permanent-magnet material (or permeability magnetic material).When pole shoe bar 3 usefulness permanent-magnet materials were made, its direction of magnetization along arc surface 31 (32) radially.But the direction of magnetization of used two the pole shoe bars 3 of every sleeving valve should be relative.N-S direction from inside to outside wherein, another ecto-entad direction, as shown in Figure 6.The inner headed face 31 of pole shoe bar should be processed paramount degree of finish, reduces valve body 1 and the frictional force of surface 11 with valve body 1.Also can only adopt a pole shoe bar 3, but like this can be little and inhomogeneous to the driving force of moving valve plate, the reliability of " opening " " pass " operation reduced.Two pole shoe bars 3 also can be made the ring-type of a band convex pole shoe by Fig. 8.When making with permanent-magnet material, pole shoe 3,5 is magnetized to the N-S utmost point respectively.Two grooves 36 on the pole shoe ring cylindrical 32 are location usefulness when being used to attach it on the operating sleeve 2, and magnetic guiding loop 34 thickness should be much smaller than salient pole boots 35 thickness, so that the magnetic line of force concentrates, guarantee the magnetic attraction bigger to moving valve plate 7.

Operating sleeve 2 is open and close operation piece of valve, is made by non-magnet material such as plastics etc., and endoporus 22 can be set on the work cylindrical 11 of valve body 1 by pine.Be shaped on two pole shoe bar grooves 21 (, then making the whole groove of band positioning boss) of symmetrical distribution as adopting the whole pole shoe bar of Fig. 8 near the middle part of endoporus 22.The width that two sides are 24 is less than the width of valve body 1 working surface 11.Being convenient to operating sleeve 2 rotates flexibly.On an end face corner restraining groove 26 is arranged therein, so that be limited in the position of " opening " " pass " by the positive stop lug boss on the valve body 1 17.

The assembly relation of valve body is as follows: central shaft 8 is press fitted in moving valve plate 7 center holes 72, and again with on the fixed valve plate 6 driven valve block 7 bi-side mounting center axles 8, (noting the seal face 65 of valve block 6 is faced toward moving valve plate 7) promptly forms the spool group.Elastic sealing gasket 5 is installed in spool group two ends, again the spool group is installed to that (attention makes the positioning boss 64 of fixed valve plate 6 aim at the locating slot 18 of valve bodies 1 in the interior fitting surface 19 of valve body 1, so that fixed valve plate 6 has correct relative on valve body 1, and it is in use no longer rotated).The operating sleeve 2 of the pole shoe bar 3 of packing in advance is inserted on the fit on face 14 of valve body 1, again inipple 4 is screwed in the screw 13 of valve body 1, pressure elasticity sealing gasket 5, thereby fixed valve plate 6 and moving valve plate 7 are compressed, realize the sealing (and can compensate the use middle valve plate) between valve block because of the issuable gap of wearing and tearing.Then assembling is finished.

The maximum characteristics that can find out this scheme are the moving valve plate behaviour who has cancelled in the present valve mechanism The passage of control, and adopt magnetic coupling to drive the break-make that valve block rotates to control fluid, make spool Group is worked in totally enclosed valve body, valve body and extraneous no any and irrelevant the leading to of direction of flow The road, no matter thereby because of make, spool group that assembling, wearing and tearing, any reason such as aging cause Lateral leakage all can not be penetrated into outside the valve body, thereby solves the external leakage problem fully: and by In the high-wearing feature of spool group, can guarantee that valve has very long service life. This valve is tied in addition Succinct, the most part processing precision of structure is less demanding, assemble easy, production cost is low, and Easy for installation, dismounting is extremely easy, makes in maintenance, be with a wide range of applications. Especially to one A little break-make controls of carrying poisonous, harmful liquid, gas (such as coal gas, natural gas etc.) pipeline More safe and reliable.

Well should in industrial production, all have in (such as chemical industry, medicine etc.) and the daily life Use prospect.

Claims

1. one kind is not had the throughway valve of leakage, ceramic disks shape fixed valve plate, elastic ring sealing gasket, inipple and operating sleeve etc. by the two-way valve body of being with step hole, disc moving valve plate, central shaft, band fan shaped borehole are formed, moving valve plate is installed between two fixed valve plates, central shaft is tightly packed in the moving valve plate center hole, its two axial ends is inserted respectively in the fixed valve plate center hole, pack in the lump in the valve body, with elastic sealing gasket make, fixed valve plate is adjacent to mutually, the operating sleeve pine is enclosed within on the valve body, it is characterized in that: the two-way valve body is made by non-magnet material, no any break-through groove, hole on the wall; Moving valve plate to small part is made by magnetic material, in corresponding to the operating sleeve outside the valve body of moving valve plate position, is symmetrically installed with the pole shoe that the pair of magnetic material is made, and moving valve plate and pole shoe have at least one to be made by the permanent magnetism magnetic material.

2. nothing according to claim 1 is leaked throughway valve, it is characterized in that: moving valve plate is made " X " type or nearly eel-like figure galleyproof type by magnetic material, and moving valve plate is through antirust corrosion-resistant treatments, and two sealing surfaces have very high degree of finish, flatness and being parallel to each other property.

3. nothing according to claim 1 is leaked throughway valve, and it is characterized in that: the moving valve plate center hole is slightly less than the central shaft diameter, and the fixed valve plate center-hole diameter is slightly larger than the central shaft diameter; The moving valve plate external diameter is slightly less than the fixed valve plate cylindrical.

4. nothing according to claim 1 is leaked throughway valve, it is characterized in that: operating sleeve is made by non-magnet material, and pole shoe is made by magnetic material, can be two separation, also can be made into the annular with relative pole shoe, the inner arc surface of pole shoe and moving valve plate magnetic pole cambered surface have identical radian measure.