CN201103698Y - Balancing type break valve - Google Patents

Balancing type break valve Download PDF

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Publication number
CN201103698Y
CN201103698Y CNU2007201151555U CN200720115155U CN201103698Y CN 201103698 Y CN201103698 Y CN 201103698Y CN U2007201151555 U CNU2007201151555 U CN U2007201151555U CN 200720115155 U CN200720115155 U CN 200720115155U CN 201103698 Y CN201103698 Y CN 201103698Y
Authority
CN
China
Prior art keywords
valve
valve rod
lining
rod
seal ring
Prior art date
Application number
CNU2007201151555U
Other languages
Chinese (zh)
Inventor
莫英华
王飞
杨春林
蔡保民
周卫萍
Original Assignee
江西船用阀门厂
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 江西船用阀门厂 filed Critical 江西船用阀门厂
Priority to CNU2007201151555U priority Critical patent/CN201103698Y/en
Application granted granted Critical
Publication of CN201103698Y publication Critical patent/CN201103698Y/en

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Abstract

The utility model relates to a balance type stop valve, which comprises a valve body, wherein, a lower valve rod is arranged in the valve body; the lower end face of the lower valve rod is connected with the valve body to form a sealing surface; the lower valve rod is fixed on the valve body by a cover plate and a valve cover; the upper end of the lower valve rod is connected with an upper valve rod by a sleeve; the top end of the upper valve rod is connected with a rotating hand wheel; a large lining of fixed fit is arranged between the lower valve rod and the valve body; the top end of the large lining is connected with the cover plate; a small lining of fixed fit is arranged between the large lining and the lower valve rod; a balance cavity is arranged between the small lining and the cover plate; the lower end face of the lower valve rod is provided with a draining hole that is communicated with the balance cavity; the lower end face of the lower valve rod is provided with an annular flute in a radial direction; a sealing ring is arranged in the annular flute. Therefore, the problems with regard to reliable sealing, convenient operation, and fast starting and closing of the stop valve, in particular a high-pressure stop valve, are solved. The balance type stop valve is characterized by flexible operation, labor saving, rapid starting and closing, and the reliable sealing, which can be wildly applied as a high-pressure stop valve to industries such as petrifaction, metallurgy and boats, etc.

Description

A kind of balanced type stop valve
Technical field
The utility model relates to a kind of stop valve, particularly high-pressure stop valve.
Background technique
As a kind of stop valve, particularly high-pressure stop valve, kind is many at present, structure is different, comprise valve body, be provided with lower valve rod in the valve body, lower valve rod lower end surface and valve body are connected to form sealing surface, lower valve rod is through cover plate, valve gap is fixed on the valve body, and the lower valve rod upper end connects upper valve rod through sleeve, and the upper valve rod top connects rotates handwheel, move through upper valve rod drive lower valve rod by rotating handwheel, contact the purpose that the sealing surface that forms reaches sealing with valve body by the lower valve rod lower end surface.The deficiency of its existence is that when using, the sealing force required owing to high pressure valve is bigger in high pressure pipe line, make sealing difficult, the working life of having reduced valve, and rotation operated by handwheel moment is big, brings difficulty to use.
Summary of the invention
Its purpose of the utility model just is to provide a kind of balanced type stop valve, and this balanced type stop valve not only seals reliably, and operated by handwheel is light, open and close rapidly, have flexible operation laborsaving, open and close rapidly, sealing is reliable, the characteristics of long service life.
The technological scheme that realizes above-mentioned purpose and adopt, comprise valve body, be provided with lower valve rod in the valve body, lower valve rod lower end surface and valve body are connected to form sealing surface, lower valve rod is through cover plate, valve gap is fixed on the valve body, the lower valve rod upper end connects upper valve rod through sleeve, the upper valve rod top connects rotates handwheel, be provided with the Large lining of secure fit between described lower valve rod and the valve body, the Large lining top connects cover plate, is provided with the little lining of secure fit between Large lining and the lower valve rod, is provided with the balance cavity between little lining and the cover plate, described lower valve rod lower end surface has conduction hole, conduction hole communicates with the balance cavity, and described lower valve rod lower end surface radially has annular groove, is provided with seal ring in the annular groove.
Compared with prior art this device has the following advantages:
1,, thereby make sealing effect more reliable owing to adopted linear soft contacting structure design;
2, owing to adopted the structural design of counter balance pocket in the valve body, make sealing force strengthen, sealing effect is more reliable, especially uses sealing effect better under high pressure conditions;
3, owing to the structural design that has adopted bearing, thereby make that the rotation handwheel is lighter, fast, have time saving and energy saving characteristics, and flexible and convenient operation.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is this apparatus structure schematic front view;
Fig. 2 is the sealing pair structural representation of this device;
Fig. 3 is the local enlarged diagram in handwheel connecting part among Fig. 1.
Embodiment
This device sealing surface adopts linear soft sealing structure, and the sealing surface of valve body directly is processed into, and lower stem seal face adopts polyimide seal, and valve body seam face contacts with the lower stem seal upper thread is soft, makes the seam face be difficult for coming to harm, and seals more reliable; Adopt the pressure balance type structure in the valve body, medium to counter balance pocket, exerts pressure lower valve rod through the conduction hole drainage downwards, and on valve gap, increased by two thrust ball bearings, reduce surface friction drag, thereby the manually-operable moment of valve closing is reduced, operate lightly, open and close rapidly.
Its structure comprises valve body 1, as shown in Figure 1, be provided with lower valve rod 2 in the valve body 1, lower valve rod 2 lower end surfaces and valve body 1 are connected to form sealing surface, lower valve rod 2 is through cover plate 5, valve gap 6 is fixed on the valve body 1, lower valve rod 2 upper ends connect upper valve rod 7 through sleeve 11, upper valve rod 7 tops connect rotates handwheel 10, be provided with the Large lining 3 of secure fit between described lower valve rod 2 and the valve body 1, Large lining 3 tops connect cover plate 5, are provided with the little lining 4 of secure fit between Large lining 3 and the lower valve rod 2, are provided with balance cavity 12 between little lining 4 and the cover plate 5, described lower valve rod 2 lower end surfaces have conduction hole 17, conduction hole 17 communicates with balance cavity 12, and described lower valve rod 2 lower end surfaces radially have annular groove, are provided with seal ring 18 in the annular groove.
Described upper valve rod 7 upper ends are provided with bearing 8 and forced filling oil cup 9, and as shown in Figure 3, bearing 8 is a thrust ball bearing, consideration is lubricated with thrust ball bearing, be provided with a straight-through type forced filling oil cup 9, when thrust ball bearing 8 needs to lubricate, use oil gun to spray butter to valve gap bearing 8 is lubricated.
Seal ring 18 in the described lower valve rod 2 lower end surface annular grooves is made for the nonmetallic material polyimide, as shown in Figure 2, this annular groove can be dovetail groove or rectangle groove, seal ring 18 is nonmetallic material such as polyimide, poly-tetrafluoro etc., seal ring 18 can adopt the mode of cast directly to form in annular groove, also can adopt finished product to embed and form sealing surface, the seam upper thread is soft contacts with valve body 1, reaches the purpose of good sealing effect.
Be provided with seal ring 15 between described Large lining 3 outer surfaces and the valve body 1, be provided with seal ring 16 between internal surface and the lower valve rod 2, as shown in Figure 2; Be provided with seal ring 13 between described little lining 4 outer surfaces and the Large lining 3, be provided with seal ring 14 between internal surface and the lower valve rod 2, realize between lining and the valve body axial seal between lining and the valve rod.
During work, rotate handwheel 10, through upper valve rod 7, sleeve 11 drives lower valve rod 2 and moves down, lower valve rod 2 lower end surface seal rings 18 and the linear soft contact seal of valve body 1 sealing surface, the conduction hole 17 of MEDIA FLOW on lower valve rod 2 lower end surfaces flows in the counter balance pocket 12 simultaneously, because action of pressure, downwards compress lower valve rod 2 through little lining 4 effects this moment, play the effect of enhanced leaktightness, at this moment stop valve is in and closes working condition.During Open valve, only need rotate handwheel 10 round about the sealing surface of lower valve rod 2 lower end surfaces is unclamped, thereby make MEDIA FLOW be in the situation of communicating, reach the purpose of valve opening.

Claims (4)

1, a kind of balanced type stop valve, comprise valve body (1), be provided with lower valve rod (2) in the valve body (1), lower valve rod (2) lower end surface and valve body (1) are connected to form sealing surface, lower valve rod (2) is through cover plate (5), valve gap (6) is fixed on the valve body (1), lower valve rod (2) upper end connects upper valve rod (7) through sleeve (11), upper valve rod (7) top connects rotates handwheel (10), it is characterized in that, be provided with the Large lining (3) of secure fit between described lower valve rod (2) and the valve body (1), Large lining (3) top connects cover plate (5), be provided with the little lining (4) of secure fit between Large lining (3) and the lower valve rod (2), be provided with balance cavity (12) between little lining (4) and the cover plate (5), described lower valve rod (2) lower end surface has conduction hole (17), and conduction hole (17) communicates with balance cavity (12), described lower valve rod (2) lower end surface radially has annular groove, is provided with seal ring (18) in the annular groove.
2, the described a kind of balanced type stop valve of root a tree name claim 1 is characterized in that, described upper valve rod (7) upper end is provided with bearing (8) and forced filling oil cup (9).
3, the described a kind of balanced type stop valve of root a tree name claim 1 is characterized in that, the seal ring (18) in the annular groove of described lower valve rod (2) lower end surface is made for the nonmetallic material polyimide.
4, the described a kind of balanced type stop valve of root a tree name claim 1 is characterized in that, is provided with seal ring (15) between described Large lining (3) outer surface and the valve body (1), is provided with seal ring (16) between internal surface and the lower valve rod (2); Be provided with seal ring (13) between described little lining (4) outer surface and the Large lining (3), be provided with seal ring (14) between internal surface and the lower valve rod (2).
CNU2007201151555U 2007-09-17 2007-09-17 Balancing type break valve CN201103698Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201151555U CN201103698Y (en) 2007-09-17 2007-09-17 Balancing type break valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201151555U CN201103698Y (en) 2007-09-17 2007-09-17 Balancing type break valve

Publications (1)

Publication Number Publication Date
CN201103698Y true CN201103698Y (en) 2008-08-20

Family

ID=39950724

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201151555U CN201103698Y (en) 2007-09-17 2007-09-17 Balancing type break valve

Country Status (1)

Country Link
CN (1) CN201103698Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102563091A (en) * 2011-12-24 2012-07-11 浙江方顿仪表阀门有限公司 Ultrahigh pressure detection stop valve
CN103216631A (en) * 2013-04-01 2013-07-24 无锡富盛阀业有限公司 Valve
CN104197090A (en) * 2014-09-10 2014-12-10 浙江三花旋转阀有限公司 Rotary type fluid passage changeover valve
CN105508627A (en) * 2015-12-24 2016-04-20 华中科技大学 High-pressure pipeline manual balance type valve
CN105605301A (en) * 2016-03-04 2016-05-25 中国船舶重工集团公司第七一九研究所 Main sealing structure for high-temperature-resistant and high-pressure-resistant air check valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102563091A (en) * 2011-12-24 2012-07-11 浙江方顿仪表阀门有限公司 Ultrahigh pressure detection stop valve
CN103216631A (en) * 2013-04-01 2013-07-24 无锡富盛阀业有限公司 Valve
CN104197090A (en) * 2014-09-10 2014-12-10 浙江三花旋转阀有限公司 Rotary type fluid passage changeover valve
CN105508627A (en) * 2015-12-24 2016-04-20 华中科技大学 High-pressure pipeline manual balance type valve
CN105508627B (en) * 2015-12-24 2017-11-14 华中科技大学 A kind of manual balanced type valve of pressure duct
CN105605301A (en) * 2016-03-04 2016-05-25 中国船舶重工集团公司第七一九研究所 Main sealing structure for high-temperature-resistant and high-pressure-resistant air check valve

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20091127

Address after: No. 6, Hangzhou Road, Jiangxi, Jiujiang Province: 332000

Patentee after: Jiujiang Zhongchuan Changan Fire-fighting Equipment Co., Ltd.

Address before: No. 198 South Gate Road, Hukou County, Jiangxi Province, China: 332500

Patentee before: Jiangxi Shipbuilding Valve Factory

ASS Succession or assignment of patent right

Owner name: JIUJIANG ZHONGCHUAN CHANGAN FIRE-FIGHTING EQUIPMEN

Free format text: FORMER OWNER: JIANGXI SHIP VALVE FACTORY

Effective date: 20091127

C41 Transfer of patent application or patent right or utility model
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080820

Termination date: 20150917