CN203585371U - Cutoff valve - Google Patents

Cutoff valve Download PDF

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Publication number
CN203585371U
CN203585371U CN201320826835.3U CN201320826835U CN203585371U CN 203585371 U CN203585371 U CN 203585371U CN 201320826835 U CN201320826835 U CN 201320826835U CN 203585371 U CN203585371 U CN 203585371U
Authority
CN
China
Prior art keywords
valve
valve seat
valve core
core
small
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 - Lifetime
Application number
CN201320826835.3U
Other languages
Chinese (zh)
Inventor
张清明
李运龙
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.)
Kairuite Valve Group Co ltd
Original Assignee
KAIRUITE VALVE 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 KAIRUITE VALVE INDUSTRY Co Ltd filed Critical KAIRUITE VALVE INDUSTRY Co Ltd
Priority to CN201320826835.3U priority Critical patent/CN203585371U/en
Application granted granted Critical
Publication of CN203585371U publication Critical patent/CN203585371U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a cutoff valve. The cutoff valve comprises a valve body, a valve rod, a large valve seat, a large valve core and a cylinder sleeve, and is characterized in that the large valve core is provided with an inner cavity; the bottom of the inner cavity is provided with a through hole which is communicated with the outlet of the cutoff valve; the side wall of the inner cavity is provided with a window which is communicated with the inlet of the cutoff valve; a small valve seat, a small valve seat gland and a small valve core are arranged in the inner cavity; the small valve seat is tightly fixed to the inner cavity of the large valve core through the small valve seat gland; the small valve core is arranged in the inner cavity of the large valve core in a way of moving up and down, and is connected with the valve rod. When the cutoff valve is positioned at a cutoff position, a hard seal is formed between the large valve core and the upper port of the large valve seat, and a hard seal is formed between the small valve core and the upper port of the small valve seat. The large valve core is provided with a sealing ring which forms soft seal with the inner hole of the large valve seat, and the small valve core is provided with a sealing ring which forms soft seal with the inner hole of the small valve seat. The cutoff valve has the characteristics that 1, the low-torque opening and closing functions of the cutoff valve can be realized; 2, by adopting a dual-sealing structure, the sealing reliability of the cutoff valve is enhanced.

Description

A kind of stop valve
Technical field
The utility model relates to a kind of improvement invention of stop valve.
Background technique
Stop valve, is also pipe valve, is most popular a kind of valve, and why very popular it is, be due in switching process between sealing surface frictional force little, more durable, Lift is little, easy to manufacture, easy to maintenance, be not only applicable to mesolow, and be applicable to high pressure.The closed principle of stop valve is that dependence valve thick stick pressure, fits tightly valve core sealed cover and sealing surface of seat, stops medium circulation.But the stop valve of prior art, its sealing just relies on valve core sealed cover and sealing surface of seat to fit tightly the single hard sealing of formation, adopt single sealing configuration, when valve causes sealing face damage due to the reason of medium, can cause valves leakage, affect the normal use of valve, valve seal reliability is lower; In addition, because stop valve exists pressure reduction at medium certainly through out-of-date its import export, this must produce unbalanced force to the opening and closing of stop valve, in the higher occasion of pressure medium, this unbalanced force also can be larger, so need larger moment by its unlatching or close.
Summary of the invention
In view of the problem that current known technology exists, the technical problems to be solved in the utility model is to be to provide a kind of employing double sealing structure, and sealing reliability is good, can realize the stop valve of low moment open and close function.
The utility model is implemented by the following technical programs:
A kind of stop valve, comprise valve body, valve rod, large valve seat, big valve core and cylinder sleeve, cylinder sleeve is fixed on the top of large valve seat, between cylinder sleeve and large valve seat, being provided with large pressing sleeve of valve seat is pressed abd fixed on large valve seat in valve body, big valve core up and down setting in valve body is led by cylinder sleeve, it is characterized in that: big valve core has inner chamber, the bottom of inner chamber is provided with through hole and communicates with the outlet of stop valve, the sidewall of inner chamber is provided with window and communicates with the import of stop valve, in inner chamber, be provided with little valve seat, little pressing sleeve of valve seat and small valve core, little pressing sleeve of valve seat is pressed abd fixed on little valve seat the inner chamber of big valve core, small valve core is connected with described valve rod in the up and down setting of inner chamber of big valve core, when stop valve is during in disconnect position, between the upper end-hole of big valve core and large valve seat, form hard sealing, between small valve core and the upper end-hole of little valve seat, also form hard sealing, big valve core is provided with between seal ring and the endoporus of large valve seat and forms soft seal, and small valve core is provided with between seal ring and the endoporus of little valve seat and also forms soft seal.
The stop valve of technique scheme, beneficial effect is: adopted double sealing structure 1., guaranteed the sealing reliability of stop valve under cut-off (closing) state, hard sealing adopts alloy material, scrape resistence and fatigue resistance are strong, long service life, and soft seal adopts elastic material, with hard sealing acting in conjunction but the perfectly safe of valve seal guaranteed in mutual noninterference, 2. can realize low moment open and close function, working principle is: while opening valve, valve rod first upwards pulls small valve core, small valve core is because the little corresponding suffered unbalanced force of lifting surface area is also little, so just can mention easily small valve core by little moment, when the move up import and export meeting conducting in advance of late gate of small valve core, so poor will major part laying down of pressure medium that valve is imported and exported, acting on unbalanced force on spool also can most ofly eliminate, so valve opening and close very high-torque and just can operate, after arriving up stroke, small valve core pull big valve core to move upward together, until valve is opened completely.
Accompanying drawing explanation
The utility model has following accompanying drawing:
Fig. 1 is structural representation of the present utility model,
Fig. 2 is the I portion enlarged view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, describe details and the working principle of the utility model specific embodiment in detail:
As shown in the figure, stop valve of the present utility model, comprise valve body 11, valve rod 5, large valve seat 9, big valve core 7 and cylinder sleeve 6, cylinder sleeve 6 is fixed on the top of large valve seat 9, between cylinder sleeve 6 and large valve seat 9, being provided with large pressing sleeve of valve seat 8 is pressed abd fixed on large valve seat 9 in valve body 11, big valve core 7 is led by cylinder sleeve 6 in the interior up and down setting of valve body 11, big valve core 7 has inner chamber, the bottom of inner chamber is provided with through hole 7b and communicates with the outlet 1 of stop valve, the sidewall of inner chamber is provided with window 7a and communicates with the import 10 of stop valve, in inner chamber, be provided with little valve seat 2, little pressing sleeve of valve seat 3 and small valve core 4, little pressing sleeve of valve seat 3 is pressed abd fixed on little valve seat 2 inner chamber of big valve core 7, small valve core 4 is connected with described valve rod 5 in the up and down setting of inner chamber of big valve core 7, when stop valve is during in disconnect position, between the upper end-hole of big valve core 7 and large valve seat 9, form hard sealing 12, between the upper end-hole of small valve core 4 and little valve seat 2, also form hard sealing 14, big valve core 7 is provided with between seal ring and the endoporus of large valve seat 9 and forms soft seal 13, and small valve core 4 is provided with between seal ring and the endoporus of little valve seat 2 and forms soft seal 15.
Stop valve of the present utility model, the double sealing structure of two kinds of sealings of employing soft or hard, sealing realizes dual fail-safe, makes the sealing reliability of stop valve higher; Adopt in addition double spool double-valve-seat structure, realized the low moment open and close function of stop valve.

Claims (1)

1. a stop valve, comprise valve body, valve rod, large valve seat, big valve core and cylinder sleeve, cylinder sleeve is fixed on the top of large valve seat, between cylinder sleeve and large valve seat, being provided with large pressing sleeve of valve seat is pressed abd fixed on large valve seat in valve body, big valve core up and down setting in valve body is led by cylinder sleeve, it is characterized in that: big valve core has inner chamber, the bottom of inner chamber is provided with through hole and communicates with the outlet of stop valve, the sidewall of inner chamber is provided with window and communicates with the import of stop valve, in inner chamber, be provided with little valve seat, little pressing sleeve of valve seat and small valve core, little pressing sleeve of valve seat is pressed abd fixed on little valve seat the inner chamber of big valve core, small valve core is connected with described valve rod in the up and down setting of inner chamber of big valve core, when stop valve is during in disconnect position, between the upper end-hole of big valve core and large valve seat, form hard sealing, between small valve core and the upper end-hole of little valve seat, also form hard sealing, big valve core is provided with between seal ring and the endoporus of large valve seat and forms soft seal, and small valve core is provided with between seal ring and the endoporus of little valve seat and also forms soft seal.
CN201320826835.3U 2013-12-16 2013-12-16 Cutoff valve Expired - Lifetime CN203585371U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320826835.3U CN203585371U (en) 2013-12-16 2013-12-16 Cutoff valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320826835.3U CN203585371U (en) 2013-12-16 2013-12-16 Cutoff valve

Publications (1)

Publication Number Publication Date
CN203585371U true CN203585371U (en) 2014-05-07

Family

ID=50583297

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320826835.3U Expired - Lifetime CN203585371U (en) 2013-12-16 2013-12-16 Cutoff valve

Country Status (1)

Country Link
CN (1) CN203585371U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090530A (en) * 2015-07-23 2015-11-25 苏州科迪流体控制设备有限公司 Stop valve
CN113028105A (en) * 2016-10-24 2021-06-25 芙罗服务管理公司 Valve assembly and method of providing a seal in a valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090530A (en) * 2015-07-23 2015-11-25 苏州科迪流体控制设备有限公司 Stop valve
CN113028105A (en) * 2016-10-24 2021-06-25 芙罗服务管理公司 Valve assembly and method of providing a seal in a valve

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Valve flap of stop valve

Effective date of registration: 20151130

Granted publication date: 20140507

Pledgee: Ruian Zhejiang rural commercial bank Limited by Share Ltd. Square Branch

Pledgor: KAIRUITE VALVE CO.,LTD.

Registration number: 2015990001063

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20171127

Granted publication date: 20140507

Pledgee: Ruian Zhejiang rural commercial bank Limited by Share Ltd. Square Branch

Pledgor: KAIRUITE VALVE CO.,LTD.

Registration number: 2015990001063

PC01 Cancellation of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Valve flap of stop valve

Effective date of registration: 20171205

Granted publication date: 20140507

Pledgee: Ruian Zhejiang rural commercial bank Limited by Share Ltd. Square Branch

Pledgor: KAIRUITE VALVE CO.,LTD.

Registration number: 2017110000018

PE01 Entry into force of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20190410

Granted publication date: 20140507

Pledgee: Zhejiang Ruian Rural Commercial Bank Co.,Ltd. Plaza Science and Technology Branch

Pledgor: KAIRUITE VALVE CO.,LTD.

Registration number: 2017110000018

PC01 Cancellation of the registration of the contract for pledge of patent right
PM01 Change of the registration of the contract for pledge of patent right

Change date: 20190410

Registration number: 2017110000018

Pledgee after: Zhejiang Ruian Rural Commercial Bank Co.,Ltd. Plaza Science and Technology Branch

Pledgee before: Ruian Zhejiang rural commercial bank Limited by Share Ltd. Square Branch

PM01 Change of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Valve flap of stop valve

Effective date of registration: 20190410

Granted publication date: 20140507

Pledgee: Zhejiang Ruian Rural Commercial Bank Co.,Ltd. Plaza Science and Technology Branch

Pledgor: KAIRUITE VALVE CO.,LTD.

Registration number: 2019990000314

PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20200324

Granted publication date: 20140507

Pledgee: Zhejiang Ruian Rural Commercial Bank Co.,Ltd. Plaza Science and Technology Branch

Pledgor: KAIRUITE VALVE Co.,Ltd.

Registration number: 2019990000314

PC01 Cancellation of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Valve flap of stop valve

Effective date of registration: 20200324

Granted publication date: 20140507

Pledgee: Zhejiang Ruian Rural Commercial Bank Co.,Ltd. Plaza Science and Technology Branch

Pledgor: KAIRUITE VALVE Co.,Ltd.

Registration number: Y2020990000224

PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20210118

Granted publication date: 20140507

Pledgee: Zhejiang Ruian Rural Commercial Bank Co.,Ltd. Plaza Science and Technology Branch

Pledgor: KAIRUITE VALVE Co.,Ltd.

Registration number: Y2020990000224

PC01 Cancellation of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: A kind of stop valve

Effective date of registration: 20210202

Granted publication date: 20140507

Pledgee: Zhejiang Ruian Rural Commercial Bank Co.,Ltd. Plaza Science and Technology Branch

Pledgor: KAIRUITE VALVE Co.,Ltd.

Registration number: Y2021980000938

PE01 Entry into force of the registration of the contract for pledge of patent right
CP01 Change in the name or title of a patent holder

Address after: 325204 North Industrial Park, Rui'an City, Wenzhou City, Zhejiang Province (Tangxia)

Patentee after: Kairuite Valve Group Co.,Ltd.

Address before: 325204 North Industrial Park, Rui'an City, Wenzhou City, Zhejiang Province (Tangxia)

Patentee before: KAIRUITE VALVE CO.,LTD.

CP01 Change in the name or title of a patent holder
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20140507