CN203082279U - Vacuum check valve - Google Patents

Vacuum check valve Download PDF

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Publication number
CN203082279U
CN203082279U CN 201320047581 CN201320047581U CN203082279U CN 203082279 U CN203082279 U CN 203082279U CN 201320047581 CN201320047581 CN 201320047581 CN 201320047581 U CN201320047581 U CN 201320047581U CN 203082279 U CN203082279 U CN 203082279U
Authority
CN
China
Prior art keywords
valve core
valve
spring
spool
filter screen
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
CN 201320047581
Other languages
Chinese (zh)
Inventor
陈永
喻波
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.)
SICHUAN GANGTONG MEDICAL EQUIPMENT GROUP CO Ltd
Original Assignee
SICHUAN GANGTONG MEDICAL EQUIPMENT GROUP 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 SICHUAN GANGTONG MEDICAL EQUIPMENT GROUP CO Ltd filed Critical SICHUAN GANGTONG MEDICAL EQUIPMENT GROUP CO Ltd
Priority to CN 201320047581 priority Critical patent/CN203082279U/en
Application granted granted Critical
Publication of CN203082279U publication Critical patent/CN203082279U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a vacuum check valve which comprises a valve body, a valve core, a valve core spring, a valve core guide holder, a spring base, a filter screen, a pressing plate and a locking nut, wherein the valve core, the valve core spring, the valve core guide holder, the spring base, the filter screen, the pressing plate and the locking nut are all arranged in the valve body, the valve core spring supports the valve core, the spring base supports the valve core spring and the valve core guide holder and adjusts the pretightening force of the valve core spring, the sealing surface of the valve core is in contact with the sealing surface of the valve body under the action of the valve core spring, the sealing between the valve body and the valve core is soft sealing, namely the sealing surface of the valve core is a non-metal material, the valve core guide holder provides guidance for vertical movement of the valve core, the filter screen is arranged at the position of an extraction opening to prevent foreign matter from entering a vacuum device, the filter screen is connected on the locking nut through the pressing plate and screws, and the spring base and the locking nut are connected with the valve body through threads. The vacuum check valve is novel in structure, convenient to use, and capable of achieving vacuum seal effectively and improving working quality of a vacuum system and prolonging the service life of the vacuum system.

Description

A kind of vacuum control check valve
Technical field
The utility model relates to the valve field in the vacuum system, is specially a kind of vacuum control check valve.
Background technique
Safety check claims one-way valve or check valve again, its effect is to prevent that the medium in the pipeline from flowing backwards, safety check belongs to the self-acting valve class, be mainly used on the pipeline of medium one-way flow, only allow medium to flow to a direction, to try to avert accidents, prevent that medium from flowing backwards, preventing pump and drive motor counter-rotating, and the releasing of vessel media.
Preceding vacuum system vacuum control check valve commonly used, its structure are all identical substantially, nearly all adopt hard sealing structure.The sealing surface of valve body and spool, all are be called as " hard sealings " of metallic material or harder other material, though the mode of this sealing is high temperature resistant, resistance to wear, good mechanical property, but its sealability is relatively poor, and in the both sides of Sealing, what a side adopted is metallic material, opposite side is that this sealing means of resilient nonmetallic material is called as " soft seal ", this sealing means is compared with " hard sealing ", and its non-refractory is easy to wear, mechanicalness is relatively poor, easily aging, wearing and tearing, working life are short, but corresponding, its sealability is better.
Summary of the invention
The utility model provides a kind of novel structure just at above technical problem, and is easy to use, can effectively solve the vacuum seal problem, but can improve the workmanship of vacuum system and a kind of vacuum control check valve in working life again.
To achieve these goals, the technical solution adopted in the utility model is such:
A kind of vacuum control check valve, comprise valve body, spool, valve core spring, spool guide holder, spring seat, filter screen, pressing plate and locking nut etc., wherein spool, valve core spring, spool guide holder, spring seat, filter screen, pressing plate and locking nut all are arranged in the valve body, the sealing surface of spool contacts with the sealing surface of valve body under the effect of valve core spring power, can effectively seal like this, strengthen the sealing of vacuum control check valve.Filter screen is arranged on the bleeding point place, and filter screen is connected on the locking nut by pressing plate and screw, and the setting of filter screen is in order to prevent that foreign matter from entering vacuum equipment, to have avoided foreign matter to damage vacuum equipment, having prolonged the working life of vacuum equipment; Valve core spring is arranged on the spring seat, and spring seat is connected with valve core spring and supports valve core spring, the pretightening force of can regulate spool spring; Be provided with the spool guide holder in the valve body, the spool guide holder provides guiding for the operation up and down of spool, and the spool guide holder connects support by spring seat.
The mode of the sealing of valve body and spool is soft seal, and this sealing means of soft seal has better seal, has guaranteed the sealing of vacuum control check valve.
Valve body and spool adopt the mode of soft seal to seal, and promptly the sealing surface of spool is nonmetallic material, as engineering plastics or rubber etc.And parts such as spool body, guide holder, spool valve core spring seat adopt the high-quality stainless steel material to make, not corrosion, the sealing means of combination so both can improve the mechanicalness of vacuum control check valve, prolong its working life, its sealability is than conventional hard good seal.
Good effect of the present utility model is embodied in:
Novel structure, easy to use, easy to maintenance, can effectively solve the sealing problem of vacuum, workmanship and the working life that can also improve vacuum system.
Description of drawings
Fig. 1 is a cross-sectional view of the present utility model
Wherein, 1-valve body, 2-spool, 3-valve core spring, 4-spool guide holder, 5-spring seat, 6-filter screen, 7-pressing plate, 8-locking nut.
Embodiment
The utility model is described in further detail below in conjunction with Figure of description and specific embodiment.
Embodiment 1:
Shown in Fig. 1, comprise valve body, spool, valve core spring, spool guide holder, spring seat, filter screen, pressing plate and locking nut etc., wherein spool, valve core spring, spool guide holder, spring seat, filter screen, pressing plate and locking nut all are arranged in the valve body, and the sealing surface of spool contacts with the sealing surface of valve body under the effect of valve core spring power.Filter screen is arranged on the bleeding point place, and filter screen is connected on the locking nut by pressing plate and screw, can enter vacuum equipment in order to prevent foreign matter like this, has avoided foreign matter to damage vacuum equipment, has prolonged the working life of vacuum equipment; Valve core spring is arranged on the spring seat, and spring seat supports valve core spring, and the regulating spool initial tension of spring; Be provided with the spool guide holder in the valve body, the spool guide holder provides guiding for the operation up and down of spool, and the spool guide holder is supported by spring seat.
Generation negative pressure during vacuum equipment work, spool overcomes valve core spring power under the effect of negative pressure need operation downwards, and this moment, vacuum control check valve was opened, and when vacuum equipment quit work, spool made progress operation and closes vacuum control check valve under the effect of valve core spring power.
The sealing means of valve body and spool is soft seal, and soft seal has better seal, has guaranteed the sealing of vacuum control check valve.Valve body and spool adopt the mode of soft seal to seal, and promptly the sealing surface of spool is nonmetallic material, as engineering plastics or rubber etc.And parts such as spool body, guide holder, spool valve core spring seat adopt the high-quality stainless steel material to make, and not corrosion so both can improve the mechanicalness of vacuum control check valve, prolonged its working life.

Claims (5)

1. vacuum control check valve, comprise valve body, spool, valve core spring, spool guide holder, spring seat, filter screen, pressing plate and locking nut, it is characterized in that: spool, valve core spring, spool guide holder, spring seat, filter screen, pressing plate and locking nut all are arranged in the valve body, and the sealing surface of spool contacts with the sealing surface of valve body under the effect of valve core spring power.
2. vacuum control check valve according to claim 1 is characterized in that: be provided with filter screen in the described valve body, filter screen is arranged on the bleeding point place, and filter screen is connected on the locking nut by pressing plate and screw.
3. vacuum control check valve according to claim 1 is characterized in that: described valve core spring is arranged on the spring seat, and spring seat supports valve core spring.
4. vacuum control check valve according to claim 1 is characterized in that: the sealing means of described valve body and spool is soft seal.
5. vacuum control check valve according to claim 1 is characterized in that: be provided with the spool guide holder in the described valve body, the spool guide holder is supported by spring seat.
CN 201320047581 2013-01-29 2013-01-29 Vacuum check valve Expired - Lifetime CN203082279U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320047581 CN203082279U (en) 2013-01-29 2013-01-29 Vacuum check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320047581 CN203082279U (en) 2013-01-29 2013-01-29 Vacuum check valve

Publications (1)

Publication Number Publication Date
CN203082279U true CN203082279U (en) 2013-07-24

Family

ID=48828117

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320047581 Expired - Lifetime CN203082279U (en) 2013-01-29 2013-01-29 Vacuum check valve

Country Status (1)

Country Link
CN (1) CN203082279U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017077171A1 (en) * 2015-11-03 2017-05-11 Outotec (Finland) Oy Vacuum box, belt filter, methods of using a vacuum belt filter, and filter element
EP3222894A4 (en) * 2014-11-17 2018-07-11 TLV Co., Ltd. Check valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3222894A4 (en) * 2014-11-17 2018-07-11 TLV Co., Ltd. Check valve
US10436334B2 (en) 2014-11-17 2019-10-08 Tlv Co., Ltd. Check valve
WO2017077171A1 (en) * 2015-11-03 2017-05-11 Outotec (Finland) Oy Vacuum box, belt filter, methods of using a vacuum belt filter, and filter element
CN108290093A (en) * 2015-11-03 2018-07-17 奥图泰(芬兰)公司 Vacuum tank, the method with filter, for repairing vacuum belt filter, for slurry liquid-solid separation method and filter cell
EP3370848A4 (en) * 2015-11-03 2019-03-06 Outotec (Finland) Oy Vacuum box, belt filter, methods for servicing a vacuum belt filter, method for liquid-solid separation of a slurry, and filter element
US10653982B2 (en) 2015-11-03 2020-05-19 Outotec (Finland) Oy Vacuum box, belt filter, methods for servicing a vacuum belt filter, method for liquid-solid separation of a slurry, and filter element
CN108290093B (en) * 2015-11-03 2021-04-06 奥图泰(芬兰)公司 Vacuum box, belt filter, method for repairing a vacuum belt filter, method for liquid-solid separation of a slurry, and filter element

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CP02 Change in the address of a patent holder
CP02 Change in the address of a patent holder

Address after: No.356, south section of kailiwei Industrial Avenue, Jianyang City, Chengdu City, Sichuan Province

Patentee after: SICHUAN GANGTONG MEDICAL EQUIPMENT GROUP Co.,Ltd.

Address before: 641400 Ziyang city of Sichuan province Kailiwei Industrial Avenue South No. 11

Patentee before: SICHUAN GANGTONG MEDICAL EQUIPMENT GROUP Co.,Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20130724