CN206386516U - A kind of metal hard-sealing ball valve with double thrust bearing structure - Google Patents

A kind of metal hard-sealing ball valve with double thrust bearing structure Download PDF

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Publication number
CN206386516U
CN206386516U CN201720077771.XU CN201720077771U CN206386516U CN 206386516 U CN206386516 U CN 206386516U CN 201720077771 U CN201720077771 U CN 201720077771U CN 206386516 U CN206386516 U CN 206386516U
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Prior art keywords
valve
valve seat
ball
spring
stuffing
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CN201720077771.XU
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杨恒
赵凯斌
严兴帅
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Ecoworld Xi (shanghai) Valve Technology Co Ltd
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Ecoworld Xi (shanghai) Valve Technology Co Ltd
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Abstract

The utility model discloses a kind of metal hard-sealing ball valve with double thrust bearing structure, including valve body, valve body two ends have been connected by screw flange bonnet, spring eye is provided with the step of flanged valve cover cavity, the first spring is provided with spring eye, first spring connects the first valve seat, first valve seat connects the second valve seat, second valve seat connects valve element, valve body is by sunk screw mating connection stuffing-box, and stuffing-box middle part, which is offered in slide opening, slide opening, is provided with valve rod, valve rod bottom connects valve element, and valve body lower end connects alignment pin by screw fit.The utility model in support ring by setting spring, ball sleeve and ball, to apply equilibrant force to valve element, prevent stuck phenomenon caused by valve element local pressure, two thrust bearings are arranged in stem bottom, it is prevented from stuck phenomenon in valve rod rotation process, fully ensure that the ball valve is normally used, extend the service life of the ball valve, reduce maintenance cost of the valve in the later stage.

Description

A kind of metal hard-sealing ball valve with double thrust bearing structure
Technical field
The utility model is related to a kind of ball valve, specifically a kind of metal hard-sealing ball valve with double thrust bearing structure.
Background technology
Ball valve is mainly used to make the flow direction for cutting off, distributing and changing medium in pipeline, and it is only needed to rotation 90 The operation of degree and the rotating torque of very little can just close tight.Ball valve optimum is switched, stop valve is used, V-type ball valve.At me State, ball valve is widely used in the row such as petroleum refining, long-distance transport pipes, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel Industry, occupies very important status in national economy.It has the action being rotated by 90 °, and faucet body is spheroid, there is circular logical Hole or passage pass through its axis.
Pneumatic ball valve is compared with other valve species, with angle stroke output torque, opens rapid, steady reliable, is applicable Extensively.But the valve rod of ball valve can be moved up in the presence of pressure medium, its shoulder is close to and compresses valve body (or stuffing-box) Valve rod hole is got out of a predicament or an embarrassing situation, and metal to metal frictional force is just generated when valve rod rotates, and the generation of frictional force can not only increase valve Moment of torsion in opening-closing process, but also having causes valve body (or stuffing-box) and valve rod stuck so that valve at the shoulder position The possibility of door failure, this is more common in the more harsh operating mode of high temperature, low temperature, high pressure and other processing mediums, therefore, passes The solution of system is to get out of a predicament or an embarrassing situation to increase a plane thrust bearing between valve rod shoulder in valve body (or stuffing-box) valve rod hole, To play a part of reduction friction, however, from the point of view of by the repairs to many domestic and international valves, although this method is one Determine that the friction of valve body (or stuffing-box) and valve rod at the shoulder position can be reduced in degree, but can be easily caused at some Valve in more harsh process unit is stuck so that whole valve opening and closing failure at the position.
Utility model content
The purpose of this utility model is to provide a kind of metal hard-sealing ball valve with double thrust bearing structure, to solve The problem of being proposed in above-mentioned background technology.
To achieve the above object, the utility model provides following technical scheme:
A kind of metal hard-sealing ball valve with double thrust bearing structure, including valve body, valve body two ends are connected by screw It is connected at flange bonnet, the step of flanged valve cover cavity and is provided with spring eye, the first spring, the connection of the first spring is provided with spring eye First valve seat, the first valve seat connects the second valve seat, and valve body two ends and the junction of flange bonnet are equipped with support ring, support ring Offer and second spring and ball sleeve are provided with spring eye, spring eye, second spring connection ball sleeve, ball sleeve connection ball, Second valve seat and ball connection valve element, valve element upper and lower ends offer link slot, and valve body is connected filler by sunk screw Offered in the middle part of letter, stuffing-box and valve rod is installed in slide opening, slide opening, valve rod top offers keyway, and stem bottom is circumferentially with Boss, stuffing-box upper end, which offers to be provided with packing groove, packing groove on packing seal element, valve rod, is arranged with filler pressing sleeve and filler Pressing plate, hold-down grid is connected by screw at the top of stuffing-box, stuffing-box and is connected by screw shield, and stuffing-box bottom offers recessed Boss on groove, valve rod is located in groove, be provided between the shoulder and groove of valve rod convex platform two be stacked together only Thrust bearing, valve rod bottom connection valve element, valve body lower end connects alignment pin by screw fit, and the upper end of alignment pin is located at valve In the link slot of core lower end.
It is used as further program of the utility model:First valve seat is cannular boss shape type valve seat, second valve Seat is the hollow convex bench-type valve seat coordinated with the first valve seat.
It is used as further program of the utility model:First is provided with the mating connection of first valve seat and the second valve seat Junction on sealing ring, second valve seat with valve element is provided with the second sealing ring.
It is used as further program of the utility model:The filler pressing sleeve is located at below hold-down grid, filler pressing sleeve lower end In packing groove.
It is used as further program of the utility model:Four spring eyes are at least offered in each support ring.
Compared with prior art, the beneficial effects of the utility model are:The utility model is rational in infrastructure, and the utility model exists One end spring of valve seat, it is ensured that valve seat is close to valve element, sealing ring is provided with valve seat, prevents medium from revealing.By in support ring Interior setting spring, ball sleeve and ball, apply equilibrant force to valve element, prevent stuck phenomenon caused by valve element local pressure, Stem bottom is arranged two thrust bearings, i.e., when one thrust bearing of box lunch occurs stuck, another thrust bearing works on And it is unaffected, stuck phenomenon in valve rod rotation process is prevented from, Double anti-deadlocking structure fully ensures that the ball valve normally makes With extending the service life of the ball valve, reduce maintenance cost of the valve in the later stage.
Brief description of the drawings
Fig. 1 is the sectional view of the metal hard-sealing ball valve with double thrust bearing structure;
Fig. 2 is the partial schematic diagram of the metal hard-sealing ball valve with double thrust bearing structure.
In figure:1- thrust bearings, the valve seats of 2- first, the sealing rings of 3- first, the springs of 4- first, the sealing rings of 5- second, 6- rollings Pearl, 7- second springs, 8- support rings, 9- keyways, 10- valve rods, 11- shields, 12- hold-down grids, 13- filler pressing sleeves, 14- fillers Seal, 15- valve bodies, 16- flanges bonnet, the valve seats of 17- second, 18- stuffing-boxes, 19- alignment pins, 20- valve elements, 21- balls Set.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belongs to the scope of the utility model protection.
Refer in Fig. 1-2, the utility model embodiment, a kind of metal hard-sealing ball with double thrust bearing structure Valve, including valve body 15, the two ends of valve body 15 have been connected by screw at flange bonnet 16, the step of the inner chamber of flange bonnet 16 and have been provided with The first spring 4 is provided with spring eye, spring eye, the first spring 4 connects the first valve seat 2, and the first valve seat 2 is cannular boss shape type valve Seat, the first valve seat 2 connects the second valve seat 17, and the second valve seat 17 is the hollow convex bench-type valve seat coordinated with the first valve seat 2, the first valve The first sealing ring 3 is provided with the mating connection of the valve seat 17 of seat 2 and second, the two ends of valve body 15 and the junction of flange bonnet 15 are all provided with Have and four spring eyes at least offered in support ring 8, each support ring 8, second spring 7 and ball sleeve 21 are provided with spring eye, Second spring 7 is connected on ball sleeve 21, the connection ball 6 of ball sleeve 21, the second valve seat 17 and the connection valve element 20 of ball 6, valve element 20 The junction that lower two ends offer on link slot, the second valve seat 17 with valve element 20 is provided with the second sealing ring 5, and valve body 15 passes through countersunk head Screw fit bonding pad letter 18, the middle part of stuffing-box 18, which is offered, is provided with valve rod 10 in slide opening, slide opening, the top of valve rod 10 is opened up There is keyway 9, the bottom of valve rod 10 is circumferentially with boss, and the upper end of stuffing-box 18, which is offered, is provided with packing seal in packing groove, packing groove Filler pressing sleeve 13 and hold-down grid 12 are arranged with part 14, valve rod 10, hold-down grid 12 is connected by screw stuffing-box 18, filler Gland 13 is located at the lower section of hold-down grid 12, and the lower end of filler pressing sleeve 13 is located in packing groove, and the top of stuffing-box 18 is connected by screw Shield 11, the bottom of stuffing-box 18 opens up fluted, the boss on valve rod 10 be located at groove in, the shoulder of the convex platform of valve rod 10 with it is recessed Two thrust bearings being stacked together 1 are installed, the bottom of valve rod 10 connects valve element 20, and the lower end of valve body 15 passes through screw between groove Mating connection alignment pin 19, the upper end of alignment pin 19 is in the link slot of the lower end of valve element 20.
The utility model is rational in infrastructure, and the ball valve when in use, is mounted in corresponding position by the utility model, and valve rod 10 is pushed up Portion's attended operation device, shield 11 is used for supporting operation device, and valve element 20 is rotated by the operation device band rotation of ovable valve stem 10, To realize cut-off or dredging medium effect.The utility model connects the first spring 4 in one end of the first valve seat 2, makes the first valve seat 2 The thrust certain to the second valve seat 17 ensures that the second valve seat 17 is close to valve element 20.Second valve seat 17 is provided with the second sealing ring 5, prevents Only medium is revealed.By setting second spring 7, ball sleeve 21 and ball 6 in support ring 8, equilibrant force is applied to valve element 20, Stuck phenomenon caused by the local pressure of valve element 20 is prevented, two thrust bearings 1 are arranged in the bottom of valve rod 10, it is same to be used for preventing valve Stuck phenomenon in the rotation process of bar 10, Double anti-deadlocking structure fully ensures that the ball valve is normally used, extends making for the ball valve With the life-span, maintenance cost of the valve in the later stage is reduced.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art It may be appreciated other embodiment.

Claims (5)

1. a kind of metal hard-sealing ball valve with double thrust bearing structure, including valve body, it is characterised in that valve body two ends lead to Crossing mode connects for screw has provided with spring eye at flange bonnet, the step of flanged valve cover cavity, and spring eye is interior to be provided with the first spring, first Spring connects the first valve seat, and the first valve seat connects the second valve seat, and valve body two ends and the junction of flange bonnet are equipped with support ring, Offered in support ring and second spring and ball sleeve are provided with spring eye, spring eye, second spring connection ball sleeve, ball sleeve connects Ball, the second valve seat and ball connection valve element are connect, valve element upper and lower ends offer link slot, and valve body is coordinated by sunk screw and connected Connect to offer in the middle part of stuffing-box, stuffing-box and valve rod is installed in slide opening, slide opening, valve rod top offers keyway, stem bottom week Filler pressing sleeve is arranged with to provided with boss, stuffing-box upper end offers to be provided with packing groove, packing groove on packing seal element, valve rod And hold-down grid, hold-down grid is connected by screw stuffing-box, is connected by screw shield at the top of stuffing-box, stuffing-box bottom is opened Provided with groove, the boss on valve rod is located in groove, is provided with two between the shoulder and groove of valve rod convex platform and overlays one The thrust bearing risen, valve rod bottom connection valve element, valve body lower end connects alignment pin, the upper end of alignment pin by screw fit In the link slot of valve element lower end.
2. the metal hard-sealing ball valve according to claim 1 with double thrust bearing structure, it is characterised in that described One valve seat is cannular boss shape type valve seat, and second valve seat is the hollow convex bench-type valve seat coordinated with the first valve seat.
3. the metal hard-sealing ball valve according to claim 1 with double thrust bearing structure, it is characterised in that described The first sealing ring is provided with the mating connection of one valve seat and the second valve seat, on second valve seat and valve element junction provided with the Two sealing rings.
4. the metal hard-sealing ball valve according to claim 1 with double thrust bearing structure, it is characterised in that described to fill out Expect that gland is located at below hold-down grid, filler pressing sleeve lower end is located in packing groove.
5. the metal hard-sealing ball valve according to claim 1 with double thrust bearing structure, it is characterised in that described every Four spring eyes are at least offered in individual support ring.
CN201720077771.XU 2017-01-20 2017-01-20 A kind of metal hard-sealing ball valve with double thrust bearing structure Active CN206386516U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720077771.XU CN206386516U (en) 2017-01-20 2017-01-20 A kind of metal hard-sealing ball valve with double thrust bearing structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720077771.XU CN206386516U (en) 2017-01-20 2017-01-20 A kind of metal hard-sealing ball valve with double thrust bearing structure

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CN206386516U true CN206386516U (en) 2017-08-08

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108799618A (en) * 2018-07-09 2018-11-13 江苏神通阀门股份有限公司 A kind of stuffing-box anti-rotation structure for preventing fast opening and closing ball valve trip bolt from shearing
CN111911664A (en) * 2020-08-04 2020-11-10 严小珍 Three-way ball valve
CN115126893A (en) * 2022-07-01 2022-09-30 苏州华亘阀门有限公司 Hard-seal fixed pneumatic ball valve for high-temperature working condition

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108799618A (en) * 2018-07-09 2018-11-13 江苏神通阀门股份有限公司 A kind of stuffing-box anti-rotation structure for preventing fast opening and closing ball valve trip bolt from shearing
CN111911664A (en) * 2020-08-04 2020-11-10 严小珍 Three-way ball valve
CN115126893A (en) * 2022-07-01 2022-09-30 苏州华亘阀门有限公司 Hard-seal fixed pneumatic ball valve for high-temperature working condition
CN115126893B (en) * 2022-07-01 2024-10-22 苏州华亘阀门有限公司 Hard seal fixed pneumatic ball valve for high-temperature working condition

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