CN206816835U - Sealing device and the regulating valve with the sealing device - Google Patents

Abstract

The utility model provides a kind of sealing device and the regulating valve with the sealing device, sealing device is arranged in valve cage and is clipped in outside valve element, including main valve clack, secondary flap, disc spring, two sealing discs, adjust pads, disc spring, two sealing discs are located at the circular hole of valve element, disc spring is clipped between two sealing discs, main valve clack and secondary flap are divided into valve element both sides, main valve clack is clipped between a sealing disc and valve cage, adjust pad is clipped between secondary flap and valve cage, and secondary flap is clipped between adjust pad and another sealing disc；Main valve clack is provided with seal groove, and sealing ring is provided with seal groove.Regulating valve includes valve base, valve body, valve seat, valve cage, valve element, bonnet and sealing device, and sealing device is located in valve cage.The utility model improves the reliability and stationarity of sealing regulation pretension between sealing effectiveness and sealing reliability, and valve cage, simplifies the assemble flow of adjustment pretightning force.

Description

Sealing device and the regulating valve with the sealing device

Technical field

It the utility model is related to valve seal field, more particularly to a kind of sealing device and the regulation with the sealing device Valve.

Background technology

Flashboard cage type regulating valve is mainly used in high temperature, high pressure, and medium may contain particle, and the faster work of velocity ratio Under condition, or the degree of regulation to valve, control characteristic and the higher special harsh operating mode of leakage class.

The regulating valve of prior art much all can not high temperature, high pressure operating mode in, to the degree of regulation of valve, and flow Control has fine method to realize, and is all unable to reach good sealing effectiveness.In actual production, application process, have with Lower problem：

1st, the sealing property of valve cage sealing pair is more unstable, after a period of time, easily produces leakage, particularly exists Under the higher operating mode of temperature.

2nd, the pretightning force of valve cage sealing pair is adjusted more difficult with screw completely, higher to matching requirements.

3rd, valve cage sealing pair is in during valve motion, and flap has relative motion, the easy loose or dislocation of fluid sealant.

Utility model content

The technical problems to be solved in the utility model be in order to overcome in the prior art regulating valve sealing property it is unstable Defect, there is provided a kind of sealing device and the regulating valve with the sealing device.

The utility model is that solve above-mentioned technical problem by following technical proposals：

A kind of sealing device, it is arranged in the valve cage in valve body and is clipped in outside the valve element being arranged in the valve cage, institute Sealing device is stated to include：Main valve clack；Secondary flap；Disc spring；Two sealing discs；Adjust pad；The disc spring, two it is described close Closing disk piece is arranged in the circular hole of the valve element, and the disc spring is clipped between two sealing discs；The main valve clack and institute State the both sides that secondary flap is respectively arranged at the valve element, the main valve clack be clipped in the sealing disc and the valve cage it Between, the adjust pad is clipped between the secondary flap and the valve cage, and the secondary flap is clipped in the adjust pad and another Between the individual sealing disc；The main valve clack is provided with seal groove, is provided with sealing ring in the seal groove, the main valve clack with The valve cage is tightly connected by the sealing ring.

It is preferred that in sealing device of the present utility model, it is conformed with the main valve clack, the seal groove is located at institute State in projection.

It is preferred that in sealing device of the present utility model, the main valve clack is provided with through hole, and the through hole is by described close Sealing groove is surround.

It is preferred that in sealing device of the present utility model, arch breach is opened up in the adjust pad, the arch lacks Mouthful bearing of trend and the valve element to wear direction parallel.

It is preferred that in sealing device of the present utility model, retaining spiral shell is set on the main valve clack and the secondary flap Mother, the valve element pass through the anti-return nut, and the anti-return nut is threadedly coupled with the valve cage.

A kind of regulating valve, it includes：Valve base, valve body, valve seat, valve cage, valve element, bonnet and as described above Sealing device；The valve body is fixed on the valve base, and the valve seat is located in the valve body, and the valve cage is located at institute State on valve seat, the sealing device is located in the valve cage, and the bonnet lid is located on the valve cage and the valve body, the valve Core sequentially passes through the bonnet, the sealing device, the valve cage and the valve element and is connected with the valve seat.

It is preferred that in regulating valve of the present utility model, the valve body passes through the first gasket seal with the valve base.

It is preferred that in regulating valve of the present utility model, the valve seat passes through the second gasket seal with the valve body.

It is preferred that in regulating valve of the present utility model, the valve seat is provided with positioning step, the valve cage engaging positioning On the positioning step.

It is preferred that in regulating valve of the present utility model, the valve cage and the valve seat are described by the 3rd gasket seal 3rd gasket ring is around the positioning step.

It is preferred that in regulating valve of the present utility model, the bonnet passes through the 4th gasket seal with the valve cage.

It is preferred that in regulating valve of the present utility model, the bonnet passes through the 5th gasket seal with the valve body.

It is preferred that in regulating valve of the present utility model, the side wall of the bonnet is provided with flange, is arranged on the flange There is bonnet flange, the bonnet flange is fixedly connected with the valve body.

It is preferred that in regulating valve of the present utility model, the bonnet flange passes through a pair of pretension bolts and pre-load nut Adjust the thrust that the bonnet flange is applied on the bonnet.

It is preferred that in regulating valve of the present utility model, the inner chamber of the bonnet includes being set on the valve element First filler, the second filler, filler disrance sleeve, two guide pipes, first filler, second filler and the filler Disrance sleeve is arranged between two guide pipes, and the filler disrance sleeve is arranged on first filler and described second Between filler.

It is preferred that in regulating valve of the present utility model, the both ends of the both ends of first filler and second filler It is respectively equipped with a stopping shim.

It is preferred that in regulating valve of the present utility model, one is respectively equipped between two guide pipes and the valve element Individual pilot bushing.

It is preferred that in regulating valve of the present utility model, first filler includes filler and first time filler on first, The lower surface of filler is upward concave surface on described first, and the upper surface of first time filler is upward convex surface.

It is preferred that in regulating valve of the present utility model, second filler include on second in filler, second filler and Second time filler, the lower surface of filler is upward concave surface in the lower surface and described second of filler on described second, described second The upper surface of middle filler and the upper surface of second time filler are upward convex surface.

It is preferred that in regulating valve of the present utility model, the regulating valve also includes support clamp, and the support clamp is clipped in institute State on the outer wall of bonnet, hold-down grid is connected with the guide pipe of the opening of the inner chamber of the bonnet, it is described to fill out Material pressing plate, which is connected by regulating bolt and adjusting nut with the support clamp and adjusts the hold-down grid, is pointed to the bonnet Inner chamber opening the guide pipe on the thrust that applies.

On the basis of common sense in the field is met, above-mentioned each optimum condition, can be combined, produce the utility model respectively compared with Good example.

Positive effect of the present utility model is：

Sealing device provided by the utility model and the regulating valve with the sealing device improve sealing tune between valve cage The reliability and stationarity of pretension are saved, simplifies the assemble flow of adjustment pretightning force.

Brief description of the drawings

Fig. 1 is the structural representation of the sealing device of the utility model embodiment 1.

Fig. 2 a be the utility model embodiment 1 sealing device in main valve clack front schematic view.Fig. 2 b are that this practicality is new The schematic rear view of main valve clack in the sealing device of type embodiment 1.

Fig. 3 be the utility model embodiment 1 sealing device in adjust pad structural representation.

Fig. 4 is the structural representation of the regulating valve of the utility model embodiment 2.

Reference：

1- valve bases, 11- fixing bolts, 12- fixing nuts；

2- valve bodies；

3- valve seats, 31- positioning steps；

4- valve cages；

5- valve elements；

6- bonnets, 61- flanges, the fillers of 62- first, the fillers of 63- second, 64- filler disrance sleeves, 65- guide pipes, 66- Stopping shim, 67- pilot bushings, 68- support clamps, 69- hold-down grids, 691- regulating bolts, 692- adjusting nuts；

7- sealing devices, 71- main valve clacks, 711- seal grooves, 712- projections, 713- through holes, 72- secondary flaps, 73- disc springs, 74- seals disc, 75- adjust pads, 751- arch breach, 76- sealing rings, 77- anti-return nuts；

The pads of 81- first, the pads of 82- second, the pads of 83- the 3rd, the pads of 84- the 4th, the pads of 85- the 5th；

9- bonnet flanges, 91- pretension bolts, 92- pre-load nuts.

Embodiment

Name preferred embodiment, and become apparent from intactly illustrating the utility model with reference to accompanying drawing.

In description of the present utility model, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", The orientation or position relationship of the instruction such as " vertical ", " level ", " top ", " bottom ", " interior ", " outer " be based on orientation shown in the drawings or Position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply signified device or member Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.

Embodiment 1

As shown in figure 1, embodiment 1 of the present utility model provides a kind of sealing device 7, it is arranged on the valve in valve body 2 In cage 4 and it is clipped in outside the valve element 5 being arranged in valve cage 4, wherein the sealing device 7 includes：Main valve clack 71, secondary flap 72, dish Spring 73, two sealing discs 74, adjust pads 75,73, two sealing discs 74 of disc spring are arranged in the circular hole of valve element 5, disc spring 73 are clipped between two sealing discs 74, and the up and down motion of valve element 5 drives sealing disc 74 to move up and down, main valve clack 71 and secondary valve Valve 72 is respectively arranged at the both sides of valve element 5, and main valve clack 71 is clipped between a sealing disc 74 and valve cage 4, and adjust pad 75 is pressed from both sides Between secondary flap 72 and valve cage 4, secondary flap 72 is clipped between adjust pad 75 and another sealing disc 74；On main valve clack 71 Provided with seal groove 711, sealing ring 76 is provided with seal groove 711, main valve clack 71 is tightly connected with valve cage 4 by sealing ring 76.

In the sealing device 7 of embodiment 1, adjust pad 75 is used to adjust the decrement of disc spring 73, it is possible to increase valve The reliability and stationarity of sealing regulation pretension between cage 4, simplify the assemble flow of adjustment pretightning force.By main valve clack 71 and valve cage Sealing means between 4 from high-temperature seal adhesive improvement design to open up seal groove 711 on main valve clack 71, in seal groove 711 The structure of sealing ring 76 is set, and as a rule sealing ring 76 is O-ring seal 76 or O-shaped quoit, and this design improves The sealing effectiveness and reliability of high-temperature seal adhesive, and eliminate fluid sealant produce loosen caused by leak, and reduce main valve Sealing area on valve 71, improve the reliability of sealing.

In addition, secondary flap 72 is arranged in valve cage 4, and it is parallel with main valve clack 71, during secondary flap 72 is assembled, pass through One soket head cap screw is fed through into valve cage 4 to act in secondary flap 72, secondary flap 72 is compressed, gives the pretension of disc spring 73 Power, be inserted into adjust pad 75, after the completion of soket head cap screw is changed into the screw of the small No.1 of length, be loaded on O-ring sealing To ensure the reliability of sealing, so as to complete the assembling process of secondary flap 72.

As shown in Figure 2 a and 2 b, as a preferred embodiment of the present utility model, in the sealing device of embodiment 1 In 7,712 are conformed with main valve clack 71, seal groove 711 is in projection 712 so that is left between main valve clack 71 and valve cage 4 Certain gap, the ductility of itself of main valve clack 71 can be utilized to give disc spring 73 certain cushion space.

As a preferred embodiment of the present utility model, in the sealing device 7 of embodiment 1, set on main valve clack 71 There is through hole 713, through hole 713 is surround by seal groove 711, is easy to carry out sealing regulation pretension according to actual condition.

As shown in figure 3, as a preferred embodiment of the present utility model, in the sealing device 7 of embodiment 1, adjust Open up arch breach 751 on whole pad 75, the bearing of trend of arch breach 751 and valve element 5 wear that direction is parallel, and the arch lacks Mouth 751 can leave operating space to the sealing regulation pretension of soket head cap screw.

As a preferred embodiment of the present utility model, in the sealing device 7 of embodiment 1, in the He of main valve clack 71 Anti-return nut 77 is set in secondary flap 72, and valve element 5 passes through anti-return nut 77, and anti-return nut 77 is threadedly coupled with valve cage 4.In main valve Set up anti-return nut 77 on valve 71 and secondary flap 72, prevent main valve clack 71 and secondary flap 72 in the motion process of valve element 5 with valve Relative motion occurs between cage 4, makes dynamic sealing is not present between valve cage 4 and main valve clack 71 and secondary flap 72, and static seal is relative For it is more reliable durable.It should be noted that the position of anti-return nut 77 and its not scheming with the annexation of miscellaneous part Shown in 1- Fig. 3, refer to the structural representation of the regulating valve shown in Fig. 4.

Embodiment 2

As shown in figure 4, embodiment 2 of the present utility model provides a kind of regulating valve, it includes：Valve base 1, valve body 2nd, valve seat 3, valve cage 4, valve element 5, bonnet 6 and sealing device 7 as described in Example 1；Valve body 2 is fixed on valve base 1 On, it is fixedly connected by fixing bolt 11 with fixing nut 12；Valve seat 3 is located in valve body 2, and valve cage 4 is on valve seat 3, sealing Device 7 is located in valve cage 4, and the lid of bonnet 6 is located on valve cage 4 and valve body 2, and valve element 5 sequentially passes through bonnet 6, sealing device 7, valve cage 4 And valve element 5 is connected with valve seat 3.By the sealing device 7 described in embodiment 1, the reliability that regulating valve seals can be improved.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, valve body 2 and valve base 1 Sealed by the first pad 81, strengthen the sealing property of regulating valve.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, valve seat 3 passes through with valve body 2 Second pad 82 seals, and strengthens the sealing property of regulating valve.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, valve seat 3 is provided with positioning Step 31, the engaging of valve cage 4 are positioned on positioning step 31 so that when valve element 5 moves up and down, a left side will not occur for valve cage 4 Right displacement.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, valve cage 4 passes through with valve seat 3 3rd pad 83 is sealed, and the 3rd pad 83 is located on around positioning step 31, strengthens the sealing property of regulating valve.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, bonnet 6 passes through with valve cage 4 4th pad 84 seals, and strengthens the sealing property of regulating valve.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, bonnet 6 passes through with valve body 2 5th pad 85 seals, and strengthens the sealing property of regulating valve.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, set in the side wall of bonnet 6 There is flange 61, bonnet flange 9 is arranged with flange 61, bonnet flange 9 is fixedly connected with valve body 2, can be adjusted by bonnet flange 9 Save the pretightning force applied to bonnet 6.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, bonnet flange 9 passes through one The thrust that bonnet flange 9 is applied on bonnet 6 is adjusted to pretension bolt 91 and pre-load nut 92.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, the inner chamber Zhong Bao of bonnet 6 Include 64, two the first filler 62 being set on valve element 5, the second filler 63, filler disrance sleeve guide pipes 65, the first filler 62nd, the second filler 63 and filler disrance sleeve 64 are arranged between two guide pipes 65, and filler disrance sleeve 64 is arranged on first Between the filler 63 of filler 62 and second.Packing seal system is set up in bonnet 6, further enhances the sealing effectiveness of regulating valve, Wherein guide pipe 65 play the guiding role in the running of valve element 5, and packing seal sleeve pipe plays the first filler 62 and second of isolation The effect of filler 63.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, the both ends of the first filler 62 A stopping shim 66 is respectively equipped with the both ends of the second filler 63, plays the work for isolating the first filler 62 and the second filler 63 With.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, two guide pipes 65 and valve A pilot bushing 67, sealing effectiveness of the enhancing guide pipe 65 during guiding are respectively equipped between core 5.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, the first filler 62 includes the Filler and first time filler on one, the lower surface of filler is upward concave surface on first, and the upper surface of first time filler is convex Face, in the motion process of valve element 5, filler and first time filler play sealing and guide effect on first.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, the second filler 63 includes the Filler and second time filler in filler, second on two, the lower surface of filler is upward in the lower surface and second of filler on second Concave surface, the upper surface of filler and the upper surface of second time filler are upward convex surface in second, in the motion process of valve element 5, second Filler and second time filler play sealing and guide effect in upper filler, second.

First filler 62 described above and the structure of the second filler 63, by its structure in medium high-temperature condition Under, the good sealed valve cap 6 of filler energy and valve element 5, medium is escaped, avoid environmental pollution and hazard to person.And fill out The kinetic force of friction of material is small so that regulating valve operates steadily, precision is high, and reduces the abrasion of executing agency, adds making for valve Use the life-span.

As a preferred embodiment of the present utility model, in the regulating valve of embodiment 2, regulating valve also includes support Folder 68, support clamp 68 is clipped on the outer wall of bonnet 6, connect bonnet 6 and executing agency, the opening positioned at the inner chamber of bonnet 6 Hold-down grid 69 is connected with guide pipe 65, hold-down grid 69 is connected with support clamp 68 by regulating bolt 691 and adjusting nut 692 Connect and adjust hold-down grid 69 be pointed to bonnet 6 inner chamber opening guide pipe 65 on the thrust that applies, for compressing Filler, give the pretightning force of packing seal.

Sealing device 7 provided by the utility model and with the sealing device 7 regulating valve improve valve cage 4 between seal The reliability and stationarity of pretension are adjusted, simplifies the assemble flow of adjustment pretightning force.

Although the foregoing describing specific embodiment of the present utility model, it will be appreciated by those of skill in the art that This is merely illustrative of, and the scope of protection of the utility model is defined by the appended claims.Those skilled in the art On the premise of without departing substantially from principle of the present utility model and essence, various changes or modifications can be made to these embodiments, But these changes and modification each fall within the scope of protection of the utility model.

Claims (20)

1. a kind of sealing device, it is characterised in that it is arranged in the valve cage in valve body and be clipped in and is arranged in the valve cage Outside valve element, the sealing device includes：

Main valve clack；

Secondary flap；

Disc spring；

Two sealing discs；

Adjust pad；

The disc spring, two sealing discs are arranged in the circular hole of the valve element, and the disc spring is clipped in two sealings Between disc；

The main valve clack and the secondary flap are respectively arranged at the both sides of the valve element, and the main valve clack is clipped in a sealing Between disc and the valve cage, the adjust pad is clipped between the secondary flap and the valve cage, and the secondary flap is clipped in institute State between adjust pad and another described sealing disc；

The main valve clack is provided with seal groove, and sealing ring is provided with the seal groove, and the main valve clack passes through institute with the valve cage State sealing ring sealed connection.

2. sealing device as claimed in claim 1, it is characterised in that be conformed with the main valve clack, the seal groove is set In in the projection.

3. sealing device as claimed in claim 2, it is characterised in that the main valve clack is provided with through hole, and the through hole is by institute Seal groove is stated to surround.

4. sealing device as claimed in claim 1, it is characterised in that arch breach, the arch are opened up in the adjust pad The bearing of trend of v notch v and the valve element to wear direction parallel.

5. sealing device as claimed in claim 1, it is characterised in that retaining is set on the main valve clack and the secondary flap Nut, the valve element pass through the anti-return nut, and the anti-return nut is threadedly coupled with the valve cage.

6. a kind of regulating valve, it is characterised in that it includes：Valve base, valve body, valve seat, valve cage, valve element, bonnet, Yi Jiru Sealing device described in any one of claim 1 to 5；

The valve body is fixed on the valve base, and the valve seat is located in the valve body, and the valve cage is located at the valve seat On, the sealing device is located in the valve cage, and the bonnet lid is located on the valve cage and the valve body, and the valve element is successively It is connected through the bonnet, the sealing device, the valve cage and the valve element with the valve seat.

7. regulating valve as claimed in claim 6, it is characterised in that the valve body is close by the first pad with the valve base Envelope.

8. regulating valve as claimed in claim 6, it is characterised in that the valve seat passes through the second gasket seal with the valve body.

9. regulating valve as claimed in claim 6, it is characterised in that the valve seat is provided with positioning step, the valve cage engaging It is positioned on the positioning step.

10. regulating valve as claimed in claim 9, it is characterised in that the valve cage and the valve seat by the 3rd gasket seal, 3rd gasket ring is around the positioning step.

11. regulating valve as claimed in claim 6, it is characterised in that the bonnet passes through the 4th gasket seal with the valve cage.

12. regulating valve as claimed in claim 6, it is characterised in that the bonnet passes through the 5th gasket seal with the valve body.

13. the regulating valve as described in any one of claim 6 to 12, it is characterised in that the side wall of the bonnet is provided with flange, Bonnet flange is arranged with the flange, the bonnet flange is fixedly connected with the valve body.

14. regulating valve as claimed in claim 13, it is characterised in that the bonnet flange passes through a pair of pretension bolts and pretension Nut adjusts the thrust that the bonnet flange is applied on the bonnet.

15. the regulating valve as described in any one of claim 6 to 12, it is characterised in that the inner chamber of the bonnet includes being arranged The first filler, the second filler, filler disrance sleeve, two guide pipes on the valve element, first filler, described second Filler and the filler disrance sleeve are arranged between two guide pipes, and the filler disrance sleeve is arranged on described first Between filler and second filler.

16. regulating valve as claimed in claim 15, it is characterised in that the both ends of first filler and second filler Both ends are respectively equipped with a stopping shim.

17. regulating valve as claimed in claim 15, it is characterised in that set respectively between two guide pipes and the valve element There is a pilot bushing.

18. regulating valve as claimed in claim 15, it is characterised in that first filler is included on first under filler and first Filler, the lower surface of filler is upward concave surface on described first, and the upper surface of first time filler is upward convex surface.

19. regulating valve as claimed in claim 15, it is characterised in that second filler is included on second in filler, second Filler and second time filler, the lower surface of filler is upward concave surface in the lower surface and described second of filler on described second, institute It is upward convex surface to state the upper surface of filler and the upper surface of second time filler in second.

20. regulating valve as claimed in claim 15, it is characterised in that the regulating valve also includes support clamp, the support clamp It is clipped on the outer wall of the bonnet, hold-down grid is connected with the guide pipe of the opening of the inner chamber of the bonnet, The hold-down grid, which is connected by regulating bolt and adjusting nut with the support clamp and adjusts the hold-down grid, is pointed to institute State the thrust applied on the guide pipe of the opening of the inner chamber of bonnet.