CN107339456A - A kind of eccentric hard sealed ball valve - Google Patents

A kind of eccentric hard sealed ball valve Download PDF

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Publication number
CN107339456A
CN107339456A CN201710727560.0A CN201710727560A CN107339456A CN 107339456 A CN107339456 A CN 107339456A CN 201710727560 A CN201710727560 A CN 201710727560A CN 107339456 A CN107339456 A CN 107339456A
Authority
CN
China
Prior art keywords
valve
ball
ring
valve seat
gasket ring
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.)
Pending
Application number
CN201710727560.0A
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Chinese (zh)
Inventor
周向青
朱建明
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.)
KUNSHAN WEISA VALVE CO Ltd
Original Assignee
KUNSHAN WEISA VALVE 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 KUNSHAN WEISA VALVE CO Ltd filed Critical KUNSHAN WEISA VALVE CO Ltd
Priority to CN201710727560.0A priority Critical patent/CN107339456A/en
Publication of CN107339456A publication Critical patent/CN107339456A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0605Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0647Spindles or actuating means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

The present invention discloses a kind of eccentric hard sealed ball valve, and it includes valve body, valve seat, valve ball and valve rod;Valve rod, which rotates, can drive valve ball to switch in valve-opening position and valve-closed position, and the longitudinal center line of valve rod deviates valve body center line;Also include threaded ring, the outer shroud week portion of threaded ring is threadedly coupled ring-side wall in valve body;Gasket ring is provided between valve body and valve seat, gasket ring is sheathed on valve seat periphery, and one end of gasket ring abuts threaded ring end, and the other end abuts valve seat.The eccentric hard sealed ball valve of the present invention can optimize sealing effectiveness, extend life of valve on the basis of abnormal boosting danger is eliminated.

Description

A kind of eccentric hard sealed ball valve
Technical field
The small-bore eccentric half-ball valve technical field the present invention relates in, particularly a kind of eccentric hard sealed ball valve.
Background technology
Double eccentric half ball valve series of valves is applied to oil, chemical industry, controls all departments such as gold, electric power, light textile, papermaking, water conservancy Mesolow pipe-line system, while apply also for the weak dirty fluid media (medium) such as sewage disposal, steam, air, coal gas, mortar, ore pulp Conveying and throttling.
At present, conventional metal hard-sealing ball valve is double-valve-seat design, it is difficult to eliminate valve lumen medium because of abnormal boosting And the problem of safe to use is influenceed, and the design of centering type ball valve single valve seat can solve the danger boosted extremely.
The content of the invention
It is an object of the invention to provide a kind of eccentric hard sealed ball valve, and it can eliminate the dangerous basis of abnormal boosting On, optimize sealing effectiveness, extend life of valve.
The technical scheme that the present invention takes is:A kind of eccentric hard sealed ball valve, including valve body(8), valve seat(4), valve ball and Valve rod(2);Valve seat 4 is located at the side of valve ball;Valve rod, which rotates, to drive valve ball to be cut in valve-opening position and valve-closed position Change, the longitudinal center line of valve rod deviates valve body center line;
Also include threaded ring(7), threaded ring(7)Outer shroud week portion threaded connection valve body(8)Interior ring-side wall;
Valve body(8)With valve seat(4)Between be provided with gasket ring(5), gasket ring(5)It is sheathed on valve seat periphery, and sealing gasket Ring(5)Side abut threaded ring(7)End, opposite side abut valve seat.
In the present invention, the gasket ring for being sealed between valve body and valve seat is fixed by threaded ring, is realized close Envelope, optimizes sealing effectiveness.
Preferably, threaded ring(7)With gasket ring(5)Between be additionally provided with gasket ring(6).
Preferably, valve seat(4)One end periphery away from valve body is taper, gasket ring(5)The side for abutting valve seat is cone Shape, gasket ring(5)Taper surface and valve seat(4)Taper surface fit.
Preferably, valve rod radial section, valve shaft center line along direction of fluid(02)Parallel to valve body center line (01).I.e. two center lines are misaligned, realize the eccentric design of ball valve.
Preferably, the hemisphere and ball drive portion, valve rod that valve ball includes mutually being connected are fixedly installed on ball drive portion It is interior.
Preferably, ball drive portion(11)Pass through bearing pin(3)Be connected valve rod(2).
Preferably, valve rod(2)Both sides set one to be used to be connected ball drive portion respectively(11)Bearing pin(3).
Beneficial effect
(1)Present invention utilizes centering type Technology design ball valve, the friction between valve seat and spheroid can be reduced, so as to reduce valve seat Abrasion;
(2)Valve ball is realized by ball drive portion and valve rod and is connected, and can reduce the moment of torsion of valve, while simplify valve rod and valve The assembling of ball;
(3)Threaded ring can play a part of being fixed and clamped to gasket ring, ensure the sealing effectiveness between valve body and valve seat;
(4)The design of threaded ring make it that the assembling of ball valve is more convenient, in assembling first by valve ball, valve rod, valve seat and sealing Gasket ring is installed, then threaded ring is screwed in into valve body, you can plays a part of fixing seal gasket ring.
Brief description of the drawings
Fig. 1 show ball-valve structure schematic diagram of the present invention.
Embodiment
Further described below in conjunction with the drawings and specific embodiments.
As shown in figure 1, the eccentric hard sealed ball valve of the present invention, including valve body 8, valve seat 4, valve ball and valve rod 2;Valve seat 4 In the side of valve ball;Valve rod, which rotates, can drive valve ball to switch in valve-opening position and valve-closed position, in the axial direction of valve rod Heart line deviates valve body center line;
Also include threaded ring 7, the outer shroud week portion of threaded ring 7 is threadedly coupled ring-side wall in valve body 8;
Gasket ring 5 is provided between valve body 8 and valve seat 4, gasket ring 5 is sheathed on valve seat periphery, and the side of gasket ring 5 The end of threaded ring 7 is abutted, opposite side abuts valve seat.
In the present invention, the gasket ring for being sealed between valve body and valve seat is fixed by threaded ring, is realized close Envelope, optimizes sealing effectiveness.
Embodiment
In Fig. 1 embodiment, valve seat 4 is located at the upstream side of valve ball.
One end periphery of the valve seat 4 away from valve body is taper, and the side that gasket ring 5 abuts valve seat is taper, gasket ring 5 The taper surface of taper surface and valve seat 4 fit.
Valve rod radial section, along the valve shaft center line 02 of direction of fluid parallel to valve body center line 01.In i.e. two Heart line is misaligned, realizes the eccentric design of ball valve.When valve rod rotates, valve seat and eccentric semi-spherical spheroid are in a common locus Upper self-centering, when approaching to turn off, then valve seat and half ball more close the sealing effectiveness for tightlier reaching good, in valve opening When, valve seat and spheroid can completely disengage, and eliminate the abrasion to valve seat.
Valve ball includes mutually connected hemisphere and ball drive portion, valve rod and is fixedly installed in ball drive portion.Spheroid Drive division 11 is connected valve rod 2 by bearing pin 3.The both sides of valve rod 2 set a bearing pin 3 for the ball drive portion 11 that is connected respectively.
, need not be to valve ball and valve seat before threaded ring is tightened in addition to valve rod is inserted in ball drive portion and fixed Other special positioning are carried out, the precision and convenience of assembling can be improved.Gasket ring is additionally provided between threaded ring 7 and gasket ring 5 6.The pretension sealing force of the adjustable valve seat periphery gasket ring 5 of threaded ring design.
In the use of the present invention, forward stream or counter fluid can be mounted to.It is positive(Valve seat and eccentric sphere are flowed through successively Body)Valve is set to have unlatching trend;Reversely(Eccentric spheroid and valve seat are flowed through successively), there is closing trend.
During assembling, valve ball is first filled in into valve body out of valve channel, valve rod is inserted to the axle in ball drive portion from top to down In hole, sphere is adjusted to cavity face(I.e. sphere is not at passage), the bearing pin 3 prepared in advance is inserted into valve rod and ball drive In the pin-and-hole set in portion, and each bearing pin in valve rod both sides is set.Then valve seat is put into valve seat slotted eye again, in valve seat overcoat If gasket ring 5 and pad 6, then threaded ring is screwed in valve body, with compress gasket and gasket ring.It is then inverse in dismounting Sequence operates.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation Also it should be regarded as protection scope of the present invention.

Claims (7)

1. a kind of eccentric hard sealed ball valve, including valve body(8), valve seat(4), valve ball and valve rod(2);Valve seat(4)Positioned at valve ball Side;Valve rod, which rotates, can drive valve ball to switch in valve-opening position and valve-closed position, and the longitudinal center line of valve rod deviates Valve body center line;It is characterized in that:
Also include threaded ring(7), threaded ring(7)Outer shroud week portion threaded connection valve body(8)Interior ring-side wall;
Valve body(8)With valve seat(4)Between be provided with gasket ring(5), gasket ring(5)It is sheathed on valve seat periphery, and sealing gasket Ring(5)One end abut threaded ring(7)End, the other end abut valve seat.
2. eccentric hard sealed ball valve according to claim 1, it is characterized in that, threaded ring(7)With gasket ring(5)Between It is additionally provided with gasket ring(6).
3. eccentric hard sealed ball valve according to claim 1, it is characterized in that, valve seat(4)One end periphery away from valve body is Taper, gasket ring(5)The side for abutting valve seat is taper, gasket ring(5)Taper surface and valve seat(4)Taper surface be affixed Close.
4. eccentric hard sealed ball valve according to claim 1, it is characterized in that, valve rod radial section, along fluid passage side To valve shaft center line(02)Parallel to valve body center line(01).
5. eccentric hard sealed ball valve according to claim 1, it is characterized in that, valve ball includes mutually connected hemisphere(1) With ball drive portion(11), valve rod(2)It is fixedly installed on ball drive portion(11)It is interior.
6. eccentric hard sealed ball valve according to claim 5, it is characterized in that, ball drive portion(11)Pass through bearing pin(3)Gu Even valve rod(2).
7. eccentric hard sealed ball valve according to claim 6, it is characterized in that, valve rod(2)Both sides set one to be used for respectively Be connected ball drive portion(11)Bearing pin(3).
CN201710727560.0A 2017-08-23 2017-08-23 A kind of eccentric hard sealed ball valve Pending CN107339456A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710727560.0A CN107339456A (en) 2017-08-23 2017-08-23 A kind of eccentric hard sealed ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710727560.0A CN107339456A (en) 2017-08-23 2017-08-23 A kind of eccentric hard sealed ball valve

Publications (1)

Publication Number Publication Date
CN107339456A true CN107339456A (en) 2017-11-10

Family

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Family Applications (1)

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CN201710727560.0A Pending CN107339456A (en) 2017-08-23 2017-08-23 A kind of eccentric hard sealed ball valve

Country Status (1)

Country Link
CN (1) CN107339456A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108167467A (en) * 2018-02-12 2018-06-15 无锡智能自控工程股份有限公司 A kind of two way seal ball valve
CN109373009A (en) * 2018-12-20 2019-02-22 武汉海王科技有限公司 A kind of naval vessel ball valve limit switch instruction device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201802901U (en) * 2009-07-19 2011-04-20 江苏江恒阀业有限公司 Self-cleaning metal hard sealing ball valve
CN202852050U (en) * 2012-10-21 2013-04-03 浙江石化阀门有限公司 Low-temperature eccentric hemisphere ball valve
CN204922071U (en) * 2015-08-18 2015-12-30 杭州佳能阀门有限公司 Bivalve seat ball valve sealed firmly
CN207122607U (en) * 2017-08-23 2018-03-20 昆山维萨阀门有限公司 A kind of eccentric hard sealed ball valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201802901U (en) * 2009-07-19 2011-04-20 江苏江恒阀业有限公司 Self-cleaning metal hard sealing ball valve
CN202852050U (en) * 2012-10-21 2013-04-03 浙江石化阀门有限公司 Low-temperature eccentric hemisphere ball valve
CN204922071U (en) * 2015-08-18 2015-12-30 杭州佳能阀门有限公司 Bivalve seat ball valve sealed firmly
CN207122607U (en) * 2017-08-23 2018-03-20 昆山维萨阀门有限公司 A kind of eccentric hard sealed ball valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108167467A (en) * 2018-02-12 2018-06-15 无锡智能自控工程股份有限公司 A kind of two way seal ball valve
CN109373009A (en) * 2018-12-20 2019-02-22 武汉海王科技有限公司 A kind of naval vessel ball valve limit switch instruction device
CN109373009B (en) * 2018-12-20 2023-09-29 武汉海王科技有限公司 Limit switch indicating device for ship ball valve

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Application publication date: 20171110