CN204512459U - A kind of valve stem elevating type stop valve - Google Patents

A kind of valve stem elevating type stop valve Download PDF

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Publication number
CN204512459U
CN204512459U CN201520146955.8U CN201520146955U CN204512459U CN 204512459 U CN204512459 U CN 204512459U CN 201520146955 U CN201520146955 U CN 201520146955U CN 204512459 U CN204512459 U CN 204512459U
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China
Prior art keywords
valve
stem
flap
support
valve rod
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CN201520146955.8U
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Chinese (zh)
Inventor
刘朝军
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Ningbo Amico Copper Valves Manufacturing Co Ltd
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Ningbo Amico Copper Valves Manufacturing Co Ltd
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Abstract

The utility model discloses a kind of valve stem elevating type stop valve, it is a kind of conventional water supply line valve, its structure is mainly by valve body, valve gap, support, valve seat, flap, valve rod, filler, Gland, the formation such as Stem Mut and handwheel, mainly Stem Mut is designed to drive rotation by handwheel, again in conjunction with the guiding rib arranged respectively between valve body and flap and guiding groove, thus make the Stem Mut energy Direct driver valve rod after rotating only do elevating movement to realize the sealing keying of valve, because valve rod no longer must realize elevating movement by rotating as traditional stop valve in this project organization, therefore the wearing and tearing that can well reduce between valve rod and filler, also keying is made to operate more laborsaving, and formation guiding makes the Open-close sealing of flap more reliable between valve body and flap, meanwhile, the rotational structure of Stem Mut carries out oil injecting lubricating by lubricating cup, also reduces the unlatching difficulty of valve.

Description

A kind of valve stem elevating type stop valve
Technical field
The utility model relates to the stop valve structure in pipeline valve, refers in particular to a kind of valve stem elevating type stop valve.
Background technique
Stop valve belongs to common pipeline valve, its structure is mainly by valve body, valve gap, support, valve seat, flap, valve rod, filler, Gland, the formation such as Stem Mut and handwheel, valve rod is be elevated the movable part be arranged in valve gap and support, valve rod lower end connects flap, valve rod threaded upper ends connection valve stem nut, and be fixed with handwheel through Stem Mut, therefore only need when using to rotate the rotation of handwheel band ovable valve stem, this valve rod Stem Mut auxiliary under rotation will be converted into elevating movement, thus drive flap to coordinate the sealing realizing stop valve to open and close with valve seat.Mainly there is following defect in actual use in said structure: one, valve rod in valve body by being converted into elevating movement, and the rotation of valve rod often easily causes in the middle part of valve rod and between valve gap as the filler of dynamic seal and crosses quick-wearing, filler is greatly shortened working life, thus causes sealing more easily revealing herein; Two, when this structure is applicable to heavy caliber stop valve, the rotation friction between valve rod and filler is larger, stop valve is opened and closed very difficult; Three, the unlubricated design in screw-thread fit place between Stem Mut and valve rod, also without the device reducing valve rod rotation friction, increases the unlatching difficulty of stop valve; Four, because valve rod possesses rotation and elevating movement simultaneously, therefore will without the need to arranging guiding device between valve rod and valve body, this flap that valve rod lower end is installed is in vacant state, easily be subject to pressure medium impact when flap is in lifting keying and cause lifting shaft axis deviation, have impact on the sealing reliability between flap and valve seat.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defect of prior art and provides a kind of and open and close that rapid operation, filler are not easy to wear, the reliable a kind of valve stem elevating type stop valve of Open-close sealing.
Technical problem of the present utility model is achieved through the following technical solutions:
A kind of valve stem elevating type stop valve, comprises valve body, the valve seat be arranged in valve body, sealing is arranged on valve gap and the support of body top and is elevated the valve rod be arranged in valve gap and support; Described valve rod lower end is stretched into valve body and is connected flap, and drive flap proportioning valve seat to form sealing keying, valve rod upper end is provided with Stem Mut and handwheel, and do elevating movement by Stem Mut and handwheel driving, described Stem Mut lower end is rotatably installed in support, and Stem Mut upper end stretches out support and handwheel is in transmission connection; Described valve rod threaded upper ends is equipped with in Stem Mut; Described valve interior wall is provided with vertically extending guiding rib, is correspondingly provided with the guiding groove forming elevating movement with described guiding rib and lead in flap side.
Be connected for trapezoidal motion thread between described valve rod upper end and Stem Mut.
Described Stem Mut lower end is provided with the bearing of a pair rotating support in support, and this pair of bearings is enclosed in support by the gland nut being arranged on cradle top.
The lubricating cup lubricating described bearing is provided with outside described support.
Horizontal " S " type valve pocket is provided with in described valve body, described valve seat is the water port be arranged in the middle part of valve pocket, the shaft axis of this water port is overlapping with the shaft axis of valve rod, is respectively equipped with the wearable hard alloy of built-up welding between the top seal face of water port and the sealed bottom face of flap.
Be provided with in the middle part of described valve rod and between valve gap and done to close the Packing seat installed and filler by Gland, between this Gland and valve gap, be provided with swing bolt that formation is connected to each other, hexagon nut, bearing pin and cotter pin.
Drive splines and locking nut is provided with between described valve rod upper end and handwheel.
Compared with prior art, the utility model mainly carrys out Direct driver Stem Mut by handwheel and rotates and arrange guiding rib and guiding groove respectively between valve body and flap, thus make the Stem Mut actuate valve stem after rotating only do elevating movement to realize the sealing keying of valve, because valve rod no longer rotates in this project organization, therefore the wearing and tearing that can well reduce between filler, also make keying operate more laborsaving, and between valve body and flap, formation guiding make the Open-close sealing of flap more reliable; Meanwhile, the rotational structure of Stem Mut carries out oil injecting lubricating by lubricating cup, also reduces the unlatching difficulty of valve.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model.
Fig. 2 is the plan view of flap.
Embodiment
To elaborate again to the utility model embodiment by above-mentioned accompanying drawing below.
As shown in Fig. 1 ~ Fig. 2,1. valve body, 2. valve seat, 3. flap, 4. valve rod, 5. gland nut, 6. stud, 7. pad, 8. valve gap, 9. hexagon nut, 10. filler, 11. bearing pins, 12. Glands, 13. swing bolts, 14. bearings, 15. lubricating cups, 16. Stem Muts, 17. handwheels, 18. locking nuts, 19. supports, 20. guiding ribs, 21. wearable hard alloys, 22. guiding grooves.
A kind of valve stem elevating type stop valve, as shown in Figure 1, it is a kind of conventional water supply line valve, and its structure is mainly made up of valve body 1, valve gap 8, support 19, valve seat 2, flap 3, valve rod 4, filler 10, Gland 12, Stem Mut 16 and handwheel 17 etc.
There is in described valve body 1 horizontal " S " type valve pocket, in the middle part of valve pocket, be provided with a shaft axis water port in vertical state, and using the valve seat 2 of this water port as whole valve.
Described valve body 1 top is provided with valve gap 8, and the many groups link by being made up of stud 6, hexagon nut 9 and pad 7 between this valve gap and valve body is connected and sealed, and extends the hollow out support 19 of linking body structure at valve gap 8 top.
Described valve rod 4 lifting is movably arranged in valve gap 8 and support 19, and the shaft axis of this valve rod 4 is overlapping with water port, the i.e. shaft axis of valve seat 2; Described valve rod 4 lower end is stretched in the valve pocket of valve body 1 through valve gap 8, be provided with the flap 3 be fixedly connected with by gland nut 5 in valve rod 4 lower end, this flap is positioned at above valve seat 2, and be respectively equipped with the wearable hard alloy 21 of built-up welding between the sealed bottom face of flap 3 and the top seal face of valve seat 2, therefore flap 3 by valve rod 4 drive can and valve seat 2 between form Open-close sealing; Guide structure is provided with between described flap 3 and valve body 1, mainly be included in valve body 1 inwall and vertically extending guiding rib 20 is set, the corresponding guiding groove 22 be provided with in flap 3 side as shown in Figure 2 in " U " type, this guiding groove and guiding rib 20 form elevating movement and lead.
Be provided with in the middle part of described valve rod 4 and between valve gap 8 and done to close the Packing seat installed and filler 10 by Gland 12, this filler, mainly as the dynamic seal of valve rod 4, is provided with swing bolt 13 that formation is connected to each other, hexagon nut 9, bearing pin 11 and cotter pin between the two between this Gland 12 and valve gap 8.
Described support 19 top is provided with a mounting hole, configuration Stem Mut 16 in this mounting hole, and Stem Mut lower end is provided with the bearing 14 of a pair rotating support in the mounting hole of support 19, Stem Mut 16 upper end is stretched out between support 19 and handwheel 17 and is in transmission connection by drive splines, and then carry out being connected and fixed between the two with locking nut 18, therefore rotation hand wheel 17 can drive Stem Mut 16 synchronous axial system; The pair of bearings 14 of described supporting valve rod nut 16 is the thrust ball bearing of upper and lower installation, they are arranged on support 19 top gland nut 5 by being threaded is enclosed in the mounting hole of support 19, interval is carried out by the outer shoulder of a circle being arranged on Stem Mut 16 excircle between upper and lower two thrust ball bearings, and at the outer lubricating cup 15 being also provided with these two bearings 14 of lubrication of support 19, with the rotation flexibility of poppet stem nut 16; Meanwhile, valve rod 4 upper end will be arranged in Stem Mut 16 as screw-thread fit by trapezoidal motion thread.
Operating process of the present utility model is: rotation hand wheel 17 drives Stem Mut 16 synchronous axial system, this Stem Mut by the cooperation of trapezoidal motion thread and guiding rib 20 and guiding groove 22 be set between valve body 1 and flap 3 respectively leading role under, ovable valve stem 4 can be with only to do elevating movement, therefore formed between flap 3 and valve seat 2 to seal and open and close, this project organization effectively can reduce the valve rod 4 of traditional stop valve must bring by being converted into elevating movement and friction and wear between filler 10, also facilitates the light keying of user for valve.

Claims (7)

1. a valve stem elevating type stop valve, comprises valve body (1), the valve seat (2) be arranged in valve body, sealing is arranged on the valve rod (4) that the valve gap (8) at valve body (1) top and support (19) and lifting are arranged in valve gap (8) and support (19); Described valve rod lower end is stretched into valve body (1) and is connected flap (3), and drive flap proportioning valve seat (2) to form sealing keying, valve rod (4) upper end is provided with Stem Mut (16) and handwheel (17), and do elevating movement by Stem Mut (16) and handwheel (17) driving, it is characterized in that described Stem Mut (16) lower end is rotatably installed in support (19), Stem Mut (16) upper end is stretched out support (19) and is in transmission connection with handwheel (17); Described valve rod (4) threaded upper ends is equipped with in Stem Mut (16); Described valve body (1) inwall is provided with vertically extending guiding rib (20), is correspondingly provided with the guiding groove (22) forming elevating movement with described guiding rib (20) and lead in flap (3) side.
2. a kind of valve stem elevating type stop valve according to claim 1, is characterized in that being connected for trapezoidal motion thread between described valve rod (4) upper end and Stem Mut (16).
3. a kind of valve stem elevating type stop valve according to claim 1 and 2, it is characterized in that described Stem Mut (16) lower end is provided with the bearing (14) of a pair rotating support in support (19), this pair of bearings is enclosed in support by the gland nut (5) being arranged on support (19) top.
4. a kind of valve stem elevating type stop valve according to claim 3, is characterized in that the lubricating cup (15) being provided with the described bearing of lubrication (14) outside described support (19).
5. a kind of valve stem elevating type stop valve according to claim 1 and 2, it is characterized in that in described valve body (1), being provided with horizontal " S " type valve pocket, described valve seat (2) is for being arranged on the water port in the middle part of valve pocket, the shaft axis of this water port is overlapping with the shaft axis of valve rod (4), is respectively equipped with the wearable hard alloy (21) of built-up welding between the sealed bottom face of the top seal face of water port and flap (3).
6. a kind of valve stem elevating type stop valve according to claim 1 and 2, it is characterized in that being provided with between described valve rod (4) middle part with valve gap (8) and make the closed Packing seat installed and filler (10) by Gland (12), be provided with between this Gland (12) and valve gap (8) form be connected to each other swing bolt (13), hexagon nut (9), bearing pin (11) and cotter pin.
7. a kind of valve stem elevating type stop valve according to claim 1 and 2, is characterized in that being provided with drive splines and locking nut (18) between described valve rod (4) upper end and handwheel (17).
CN201520146955.8U 2015-03-16 2015-03-16 A kind of valve stem elevating type stop valve Active CN204512459U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520146955.8U CN204512459U (en) 2015-03-16 2015-03-16 A kind of valve stem elevating type stop valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520146955.8U CN204512459U (en) 2015-03-16 2015-03-16 A kind of valve stem elevating type stop valve

Publications (1)

Publication Number Publication Date
CN204512459U true CN204512459U (en) 2015-07-29

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Family Applications (1)

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Country Status (1)

Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106812953A (en) * 2017-04-10 2017-06-09 永嘉品信阀门有限公司 A kind of stop valve
CN108278410A (en) * 2018-03-19 2018-07-13 江苏神通阀门股份有限公司 Lift the valve stem nut drive mechanism of valve
CN108361387A (en) * 2018-04-13 2018-08-03 何书贵 A kind of industrial pipeline valve
CN113898782A (en) * 2021-10-12 2022-01-07 精工阀门集团有限公司 Valve rod positioning and guiding device of oxygen stop valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106812953A (en) * 2017-04-10 2017-06-09 永嘉品信阀门有限公司 A kind of stop valve
CN108278410A (en) * 2018-03-19 2018-07-13 江苏神通阀门股份有限公司 Lift the valve stem nut drive mechanism of valve
CN108361387A (en) * 2018-04-13 2018-08-03 何书贵 A kind of industrial pipeline valve
CN113898782A (en) * 2021-10-12 2022-01-07 精工阀门集团有限公司 Valve rod positioning and guiding device of oxygen stop valve

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