CN103899768A - Pressure self-sealing stop valve - Google Patents

Pressure self-sealing stop valve Download PDF

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Publication number
CN103899768A
CN103899768A CN201410078797.7A CN201410078797A CN103899768A CN 103899768 A CN103899768 A CN 103899768A CN 201410078797 A CN201410078797 A CN 201410078797A CN 103899768 A CN103899768 A CN 103899768A
Authority
CN
China
Prior art keywords
valve
rod
flap
gap
valve rod
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
CN201410078797.7A
Other languages
Chinese (zh)
Inventor
丁学峰
蔡雷
顾云飞
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.)
DAFENG OKAY FLUID MACHINERY Co Ltd
Original Assignee
DAFENG OKAY FLUID MACHINERY 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 DAFENG OKAY FLUID MACHINERY Co Ltd filed Critical DAFENG OKAY FLUID MACHINERY Co Ltd
Priority to CN201410078797.7A priority Critical patent/CN103899768A/en
Publication of CN103899768A publication Critical patent/CN103899768A/en
Pending legal-status Critical Current

Links

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
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/02Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
    • F16K1/04Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
    • 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
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32Details
    • 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
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32Details
    • F16K1/48Attaching valve members to screw-spindles
    • F16K1/482Attaching valve members to screw-spindles with a collar on the spindle or a groove in the spindle, by which a fixing element is supported, the spindle reaching into the valve member
    • 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
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/08Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves

Abstract

The invention discloses a pressure self-sealing stop valve which is high in stability during operation. The pressure self-sealing stop valve comprises a valve body, wherein an inlet channel and an outlet channel are arranged in the valve body, a valve clack which is matched with the inlet channel and the outlet channel is arranged in the valve body, a valve seat which is matched with the valve clack is arranged in the valve body, a chromium alloy block is arranged on the valve clack, an arc-shaped protrusion which is matched with the chromium alloy block is arranged at one end of a valve rod, the chromium alloy block on the valve clack abuts against the arc-shaped protrusion at one end of the valve rod, the other end of the valve rod penetrates through a valve deck to be connected with the a valve rod operating mechanism, a soft stainless steel sealing ring is arranged between a valve nut and the valve deck, an oblique plane is arranged at the lower end of the soft stainless steel sealing ring and is matched with an oblique plane at the upper end of the valve deck, hard alloy is arranged on the oblique plane at the upper end of the valve deck, and an O-shaped reinforcing rod is arranged outside the upper end of the valve deck and is fixed to the valve rod operating mechanism through a fixing bolt.

Description

Pressure self-sealing stop valve
Technical field
The present invention relates to a kind of valve, relate in particular to a kind of pressure self-sealing stop valve.
Background technique
For the fluid in cutting out pipeline effectively, on pipeline, all can be provided with valve.Existing valve generally only has a kind of function cut-off or non-return, function ratio is more single, some places are because Long contact time wear rate is high, cause valve shortening in working life, firm poor performance between valve rod and valve gap, controls inaccuracy simultaneously, and the sealability between valve body and valve gap does not reach requirement, easily cause liquid medium to leak, can not meet well usage requirement.
Summary of the invention
Technical problem to be solved by this invention is: the pressure self-sealing stop valve that when a kind of operation is provided, steadiness is good.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: pressure self-sealing stop valve, comprise: valve body, in described valve body, be provided with inlet passage and outlet passage, in described valve body, be provided with the flap cooperatively interacting with inlet passage and outlet passage, in described valve body, be provided with the valve seat cooperatively interacting with flap, on flap, be provided with evanohm piece, on one end of valve rod, be provided with the circular arc cooperatively interacting with evanohm piece
Projection, circular arc projection on evanohm piece and valve rod one end on flap offsets, the other end of described valve rod is connected with valve rod operating device through valve gap, the valve mother that passes through of described valve gap is arranged in valve body, between described valve mother and valve gap, be provided with soft stainless steel sealing ring, the inclined-plane that the lower end of described soft stainless steel sealing ring is provided with inclined-plane and valve gap upper end cooperatively interacts, on the inclined-plane, upper end of described valve gap, be provided with cemented carbide, there is O type reinforcing bar in the upper end of described valve gap arranged outside, described O type reinforcing bar is fixed on valve rod operating device by fixing bolt.
Advantage of the present invention is: above-mentioned pressure self-sealing stop valve is arranged on pipeline, has two kinds of functions of stop valve and safety check simultaneously, and frictional force is little, easy to maintenance, and when operation, firm performance is good, and good sealing effect can meet usage requirement well.
Accompanying drawing explanation
Fig. 1 is the structural representation of pressure self-sealing stop valve of the present invention.
In figure: 1, valve body, 2, inlet passage, 3, outlet passage, 4, flap, 5, valve seat, 6, evanohm piece, 7, valve rod, 8, circular arc projection, 9, valve gap, 10, valve rod operating device, 11, valve mother, 12, soft stainless steel sealing ring, 13, cemented carbide, 14, O type reinforcing bar, 15, fixing bolt.
Embodiment
Describe in detail particular content of the present invention below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, pressure self-sealing stop valve, comprise: valve body 1, in described valve body 1, be provided with inlet passage 2 and outlet passage 3, in described valve body 1, be provided with the flap 4 cooperatively interacting with inlet passage 2 and outlet passage 3, in described valve body 1, be provided with the valve seat 5 cooperatively interacting with flap 4, on flap 4, be provided with evanohm piece 6, on one end of valve rod 7, be provided with the circular arc projection 8 cooperatively interacting with evanohm piece 6, evanohm piece 6 on flap 4 offsets with the circular arc projection 8 on valve rod 7 one end, the other end of described valve rod 7 is connected with valve rod operating device 10 through valve gap 9, the valve mother 11 that passes through of described valve gap 9 is arranged in valve body 1, between described valve female 11 and valve gap 9, be provided with soft stainless steel sealing ring 12, the inclined-plane that the lower end of described soft stainless steel sealing ring 12 is provided with inclined-plane and valve gap 9 upper ends cooperatively interacts, on the inclined-plane, upper end of described valve gap 9, be provided with cemented carbide 13, there is O type reinforcing bar 14 in the upper end of described valve gap 9 arranged outside, described O type reinforcing bar 14 is fixed on valve rod operating device 10 by fixing bolt 15.
Above-mentioned pressure self-sealing stop valve is arranged on pipeline, fluid enters in valve body 1 by inlet passage 2, by upwards poppet stem 7 of valve rod operating device 10, flap 4 is backed down by fluid, inlet passage 2 and outlet passage 3 are communicated with, when fluid interior through out-of-date at valve body 1, can produce thrust upwards to valve gap 9, thrust is larger, valve gap 9 is better in the effect lower seal performance of soft stainless steel sealing ring 12 and cemented carbide 13, can there is not fluid leakage, valve rod and valve gap are more firmly firm while operation by O type reinforcing bar 14, in the time of needs throttle down, by valve rod operating device 10 extruding valve rod 7 downwards, flap 4 matches with valve seat 5 under the effect of valve rod 7, inlet passage 2 and outlet passage 3 are spaced, the circular arc projection 8 of valve rod 7 one end offsets with evanohm piece 6, reduce the wear rate between flap 4 and valve rod 7, extend the working life of valve.

Claims (1)

1. pressure self-sealing stop valve, it is characterized in that: comprising: valve body (1), in described valve body (1), be provided with inlet passage (2) and outlet passage (3), in described valve body (1), be provided with the flap (4) cooperatively interacting with inlet passage (2) and outlet passage (3), in described valve body (1), be provided with the valve seat (5) cooperatively interacting with flap (4), on flap (4), be provided with evanohm piece (6), on one end of valve rod (7), be provided with the circular arc projection (8) cooperatively interacting with evanohm piece (6), evanohm piece (6) on flap (4) offsets with the circular arc projection (8) on valve rod (7) one end, the other end of described valve rod (7) is connected with valve rod operating device (10) through valve gap (9), the valve mother (11) that passes through of described valve gap (9) is arranged in valve body (1), between described valve mother (11) and valve gap (9), be provided with soft stainless steel sealing ring (12), the inclined-plane that the lower end of described soft stainless steel sealing ring (12) is provided with inclined-plane and valve gap (9) upper end cooperatively interacts, on the inclined-plane, upper end of described valve gap (9), be provided with cemented carbide (13), there is O type reinforcing bar (14) in the upper end arranged outside of described valve gap (9), described O type reinforcing bar (14) is fixed on valve rod operating device (10) by fixing bolt (15).
CN201410078797.7A 2014-03-05 2014-03-05 Pressure self-sealing stop valve Pending CN103899768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410078797.7A CN103899768A (en) 2014-03-05 2014-03-05 Pressure self-sealing stop valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410078797.7A CN103899768A (en) 2014-03-05 2014-03-05 Pressure self-sealing stop valve

Publications (1)

Publication Number Publication Date
CN103899768A true CN103899768A (en) 2014-07-02

Family

ID=50991274

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410078797.7A Pending CN103899768A (en) 2014-03-05 2014-03-05 Pressure self-sealing stop valve

Country Status (1)

Country Link
CN (1) CN103899768A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105114643A (en) * 2015-09-16 2015-12-02 吴忠仪表有限责任公司 Self-aligning valve element
CN108692056A (en) * 2018-07-12 2018-10-23 上海核阀门股份有限公司 The valve rod and flap connection structure and globe valve of globe valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2827527A1 (en) * 1978-06-23 1980-01-10 Messerschmitt Boelkow Blohm Shut=off valve for cryogenic medium - has closure member held on actuating stem under tension and with limited freedom of angular movement
CN2353988Y (en) * 1998-11-03 1999-12-15 左学禹 Valve with noval structure
CN202646742U (en) * 2012-07-09 2013-01-02 浙江中正阀门有限公司 High-pressure accumulation-proof throttling stop valve
CN202708128U (en) * 2012-07-08 2013-01-30 福建嘉诺阀门有限公司 Stop valve
CN203230863U (en) * 2013-04-12 2013-10-09 上海开维喜阀门集团有限公司 Anti-impact stop valve sealing structure
CN203784318U (en) * 2014-03-05 2014-08-20 大丰市奥凯流体机械有限公司 Self-sealing pressure stop valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2827527A1 (en) * 1978-06-23 1980-01-10 Messerschmitt Boelkow Blohm Shut=off valve for cryogenic medium - has closure member held on actuating stem under tension and with limited freedom of angular movement
CN2353988Y (en) * 1998-11-03 1999-12-15 左学禹 Valve with noval structure
CN202708128U (en) * 2012-07-08 2013-01-30 福建嘉诺阀门有限公司 Stop valve
CN202646742U (en) * 2012-07-09 2013-01-02 浙江中正阀门有限公司 High-pressure accumulation-proof throttling stop valve
CN203230863U (en) * 2013-04-12 2013-10-09 上海开维喜阀门集团有限公司 Anti-impact stop valve sealing structure
CN203784318U (en) * 2014-03-05 2014-08-20 大丰市奥凯流体机械有限公司 Self-sealing pressure stop valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105114643A (en) * 2015-09-16 2015-12-02 吴忠仪表有限责任公司 Self-aligning valve element
CN108692056A (en) * 2018-07-12 2018-10-23 上海核阀门股份有限公司 The valve rod and flap connection structure and globe valve of globe valve

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Application publication date: 20140702