CN204922202U - Seal structure of ball valve valve rod - Google Patents

Seal structure of ball valve valve rod Download PDF

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Publication number
CN204922202U
CN204922202U CN201520745404.3U CN201520745404U CN204922202U CN 204922202 U CN204922202 U CN 204922202U CN 201520745404 U CN201520745404 U CN 201520745404U CN 204922202 U CN204922202 U CN 204922202U
Authority
CN
China
Prior art keywords
valve rod
valve
gland
support ring
ball
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201520745404.3U
Other languages
Chinese (zh)
Inventor
陈均
石丽腾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG XINCHANG SUNRAY XIANGXUE PUNCHING INDUSTRY Co Ltd
Original Assignee
ZHEJIANG XINCHANG SUNRAY XIANGXUE PUNCHING INDUSTRY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZHEJIANG XINCHANG SUNRAY XIANGXUE PUNCHING INDUSTRY Co Ltd filed Critical ZHEJIANG XINCHANG SUNRAY XIANGXUE PUNCHING INDUSTRY Co Ltd
Priority to CN201520745404.3U priority Critical patent/CN204922202U/en
Application granted granted Critical
Publication of CN204922202U publication Critical patent/CN204922202U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a seal structure of ball valve valve rod, including the casing, set up valve rod in the casing, cup joint the gland in the casing top, its characterized in that the one end symmetry that the gland was kept away from to the valve rod is provided with the two halves ring, still cup joint on the valve rod and be provided with support ring subassembly, O shape circle subassembly, isolating ring, the valve rod is served near one of gland and is provided with thrust bearing. The utility model has the advantages of reasonable design, through setting up the thrust bearing in the valve rod top, the unnecessary thing of powder that can effectively avoid the sealing member wearing and tearing to produce influences the bearing life -span, through the support ring subassembly that sets up, ensures that the valve rod is in the minimum state of frictional force, and the leakproofness obtains improving to the life of extension valve rod improves the operation and feels, promotes security, the reliability of valve, has effectively reduced maintenance period and cost of maintenance.

Description

A kind of sealing configuration of ball-valve valve rod
Technical field
The utility model belongs to ball valve technical field, is specifically related to a kind of sealing configuration of ball-valve valve rod.
Background technique
Along with the develop rapidly of science and technology, updating of ball valve production technology and product structure, in the short time, has developed rapidly and has become a kind of main valve class.In China, ball valve is widely used in industries such as petroleum refining, long-distance transport pipes, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, iron and steel, occupies very important status in national economy.It has the action of 90-degree rotation, and faucet body is spheroid, has manhole or passage by its axis.Ball valve is mainly used to make the flow direction cutting off, distribute and change medium in pipeline, and it is tight that it only needs to use the operation of 90-degree rotation and very little moment of rotation just can close.Due to ball valve, to have latus rectum large, fluid resistance is little, medium channel flat smooth, the features such as switch facilitates rapidly, especially operator can judge the on off state of ball valve by handle position, so adopt tee ball valve to control to export and reclaim in the outlet of rock gas filing provision, the existing ball valve being arranged on filler is frequent owing to using, after general use some months, during switching manipulation handle, feel becomes very heavy, can find when checking airtight that part ball-valve valve rod place starts to occur micro-leakage, security incident can be caused time serious, the working life of existing ball valve is short, rate of fault is high, maintenance is frequent.
Model utility content
For problems of the prior art, the purpose of this utility model is to design the sealing configuration providing a kind of ball-valve valve rod.
The sealing configuration of described a kind of ball-valve valve rod, comprise housing, the valve rod be arranged in housing, be socketed in gland above housing, it is characterized in that described valve rod is symmetrically arranged with two halves annulus away from one end of gland, on described valve rod, also socket is provided with support ring assembly, O shape coil assembly, isolating ring, and described valve rod is provided with thrust-bearing on one end of gland.
The sealing configuration of described a kind of ball-valve valve rod, is characterized in that in the part that described valve rod is positioned at gland, socket is provided with dust ring.
The sealing configuration of described a kind of ball-valve valve rod, it is characterized in that described support ring assembly comprises support ring and lower support ring, described lower support ring is arranged on the top of two halves annulus, and described upper support ring is arranged between O shape coil assembly and thrust-bearing.
The sealing configuration of described a kind of ball-valve valve rod, is characterized in that described isolating ring is arranged between O shape coil assembly.
The sealing configuration of described a kind of ball-valve valve rod, it is characterized in that the upper end grafting of described housing is provided with pressure pad, described pressure pad is the hollow column of upper and lower opening.
The utility model reasonable in design, by being arranged on the thrust-bearing above valve rod, the powder fifth wheel that can effectively avoid sealing part abrasion to produce affects bearing life, by the support ring assembly arranged, guarantee that valve rod is in the minimum state of frictional force, sealing is improved, thus extend the working life of valve rod, improve operating handle, the Security of poppet, reliability, effectively reduce maintenance period and maintenance cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-housing, 2-valve rod, 3-gland, 4-semicircular ring, 5-O shape coil assembly, 6-isolating ring, 7-promotes bearing, 8-dust ring, the upper support ring of 9-, 10-lower support ring, 11-pressure pad.
Embodiment
The utility model is further illustrated below in conjunction with Figure of description.
As shown in Figure 1, the sealing configuration of a kind of ball-valve valve rod of the utility model, comprise housing 1, the valve rod 2 be arranged in housing 1, be socketed in gland 3 above housing 1, valve rod 2 is symmetrically arranged with two halves annulus 4 away from one end of gland 3, on valve rod 2, also socket is provided with support ring assembly, O shape coil assembly 5, isolating ring 6, and valve rod 2 is provided with thrust-bearing 7 on one end of gland 3.Wherein, valve rod 2 be positioned at gland 3 part on socket be provided with dust ring 8, for dust-proof; Support ring assembly comprises support ring 9 and lower support ring 10, and lower support ring 10 is arranged on the top of two halves annulus 4, and upper support ring 9 is arranged between O shape coil assembly 5 and thrust-bearing 7; Isolating ring 6 is arranged between O shape coil assembly 5; The upper end grafting of housing 1 is provided with pressure pad 11, and pressure pad 11 is the hollow column of upper and lower opening.
The utility model by by with O shape coil assembly 5 with the use of plastic hoop change single end face right-angle type slip ring into, O shape circle and valve rod between plastics wall thickness be 0.2mm, adopt polytetrafluoroethylmaterial material.This plastic hoop holds valve rod tightly under the effect of pressure medium, and the decrement that after there are wearing and tearing, O shape is enclosed is recovered to give plastic hoop and compensated, and plays the effect of back-up ring simultaneously; Thrust-bearing is arranged on the top of valve rod, the powder fifth wheel can keeping away sealing part abrasion generation affects bearing life; Valve rod is supported by upper and lower two plastic support rings, makes valve rod be in the minimum state of frictional force, with gland, isolating ring, pressure pad all without rubbing.Such valve rod only bears the frictional force that torsional moment between spheroid and sealing surface of seat and bearing produce, because fluoroplastic friction factor is very little, frictional force between valve rod and plastic hoop is just very little, because thrust-bearing assume responsibility for the pressure of medium, the sealing of valve rod is improved, the moment of torsion making again valve rod bear greatly reduces, and corresponding feel is all right.Gland and valve body are threaded connection and lock, and the valve rod apical axis place of holding step also can prevent from going out because of overpressure.Two halves annulus is stuck on valve rod and can is loaded together by all parts easily or take out valve body.The ball valve sealing structure of this vibrational power flow, its sealability improves greatly, effectively can extend the working life of product.

Claims (5)

1. the sealing configuration of a ball-valve valve rod, comprise housing (1), the valve rod (2) be arranged in housing, be socketed in gland (3) above housing, it is characterized in that described valve rod (2) is symmetrically arranged with two halves annulus (4) away from one end of gland (3), on described valve rod (2), also socket is provided with support ring assembly, O shape coil assembly (5), isolating ring (6), and described valve rod (2) is provided with thrust-bearing (7) on one end of gland (3).
2. the sealing configuration of a kind of ball-valve valve rod as claimed in claim 1, is characterized in that in the part that described valve rod (2) is positioned at gland (3), socket is provided with dust ring (8).
3. the sealing configuration of a kind of ball-valve valve rod as claimed in claim 1, it is characterized in that described support ring assembly comprises support ring (9) and lower support ring (10), described lower support ring (10) is arranged on the top of two halves annulus, and described upper support ring (9) is arranged between O shape coil assembly (5) and thrust-bearing (7).
4. the sealing configuration of a kind of ball-valve valve rod as claimed in claim 1, is characterized in that described isolating ring (6) is arranged between O shape coil assembly (5).
5. the sealing configuration of a kind of ball-valve valve rod as claimed in claim 1, is characterized in that the upper end grafting of described housing (1) is provided with pressure pad (11), the hollow column that described pressure pad (11) is upper and lower opening.
CN201520745404.3U 2015-09-24 2015-09-24 Seal structure of ball valve valve rod Expired - Fee Related CN204922202U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520745404.3U CN204922202U (en) 2015-09-24 2015-09-24 Seal structure of ball valve valve rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520745404.3U CN204922202U (en) 2015-09-24 2015-09-24 Seal structure of ball valve valve rod

Publications (1)

Publication Number Publication Date
CN204922202U true CN204922202U (en) 2015-12-30

Family

ID=54971329

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520745404.3U Expired - Fee Related CN204922202U (en) 2015-09-24 2015-09-24 Seal structure of ball valve valve rod

Country Status (1)

Country Link
CN (1) CN204922202U (en)

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151230

Termination date: 20160924

CF01 Termination of patent right due to non-payment of annual fee