CN102829032A - Large-flow check valve for filter - Google Patents

Large-flow check valve for filter Download PDF

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Publication number
CN102829032A
CN102829032A CN2012103664908A CN201210366490A CN102829032A CN 102829032 A CN102829032 A CN 102829032A CN 2012103664908 A CN2012103664908 A CN 2012103664908A CN 201210366490 A CN201210366490 A CN 201210366490A CN 102829032 A CN102829032 A CN 102829032A
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CN
China
Prior art keywords
bolt
filter
spring
cover plate
flow
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.)
Granted
Application number
CN2012103664908A
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Chinese (zh)
Other versions
CN102829032B (en
Inventor
黄翔
周国贞
王德达
杨芝刚
周国龙
冷云
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.)
Nanjing Xunlian Fluid Technology Co.,Ltd.
Original Assignee
NANJING SOLINER HYDRAULIC PARTS 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 NANJING SOLINER HYDRAULIC PARTS CO Ltd filed Critical NANJING SOLINER HYDRAULIC PARTS CO Ltd
Priority to CN201210366490.8A priority Critical patent/CN102829032B/en
Publication of CN102829032A publication Critical patent/CN102829032A/en
Application granted granted Critical
Publication of CN102829032B publication Critical patent/CN102829032B/en
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  • Check Valves (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention discloses a large-flow check valve for a filter. A valve body (9) is connected with an oil return filter, a cover plate (7), a support pipe (5), a spring (4) and a pressure plate (3) are installed in the valve body (9) and stringed together by a bolt (6), opening pressure is fixed and regulated by a locknut (2), and an opening pin (1) is also installed at the end of the bolt (6) so as to prevent the bolt (6) from dropping. With the adoption of the large-flow check valve, the structure is novel and practical, pressure drop of a flow is small, oil passing capability is strong, and the requirements for adding the oil return filter of an engineering machinery hydraulic system can be satisfied.

Description

The big flow one-way valve that filter is used
Technical field
The present invention relates to the return filter system in the construction machinery hydraulic system, specifically a kind of one-way valve.
Background technique
Hydraulic fluid flow rate in the construction machinery hydraulic system depends on pump delivery, engine revolution and oil cylinder two ends area ratio, and (1000 rev/mins～2500 rev/mins) and oil cylinder two ends area ratio are bigger greatly because engine revolution changes and changes with operation, so changes in flow rate is very big; Therefore the bad selection of return filter; Because changes in flow rate is big, to select by peak rate of flow during fixed filter, installing space can be very big; Can't install, and cost is very high.One-way valve and filter use simultaneously, are connected in parallel, at present a lot of producers do not reinstall oil strainer and one-way valve, and fixed filter is arranged individually; Adopt traditional one-way valve, flow is less, and the flow drooping characteristic is very poor; Cause oil contamination serious, system is unstable, and rate of fault is high.
Summary of the invention
The object of the invention is exactly the defective that exists to said system, and the big flow one-way valve that the filter of a kind of novel structure of exploitation is used can be used in combination with return filter, to solve the oil contamination problem, improves the reliability of system.
The technological scheme that the present invention adopts is following:
The big flow one-way valve that a kind of filter is used is characterized in that it comprises the valve body that is connected with return filter, and valve body one side is provided with filler opening; Opposite side is provided with oil outlet, on the said oil outlet cover plate is installed, and bolt is installed on the cover plate; Be with spring on the bolt; Spring one end withstands on the cover plate, and the other end withstands and is installed in the bolt top board equally, and the lock nut that is positioned at the pressing plate outside also is installed on said bolt.
Also be set with support tube on the said bolt, said spring one end is connected with cover plate, and the other end is enclosed within on the support tube.
Said support tube one end is positioned at spring inner, and the other end links to each other with pressing plate.
Said support tube, spring, pressing plate with the bolt string together, and are equipped with the cotter pin that prevents that lock nut from coming off between them in the end of bolt.
Beneficial effect of the present invention has:
Novel structure is practical, and the flow pressure drop is little, and oil filling capacity is strong, can realize that construction machinery hydraulic system increases the requirement of return filter.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done explanation further:
As shown in Figure 1, it comprises the valve body 9 that is connected with return filter the present invention, and valve body 9 one sides are provided with filler opening 10, and opposite side is provided with oil outlet 8.Cover plate 7 is installed on the oil outlet 8, and the center of cover plate 7 is equipped with bolt 6, is set with pressing plate 7, support tube 5 and spring 4 on the bolt 6.Support tube 5 one ends are positioned at spring 4 inside, and the other end links to each other with pressing plate 7.Support tube 5 plays supported spring and the fixed position is used.Spring 4 one ends withstand on the cover plate 7, and the other end links to each other with pressing plate 3.The lock nut 2 that is positioned at pressing plate 3 outsides (being the left side of pressing plate 3 shown in Figure 1) also is installed on bolt 6, and the cotter pin 2 that prevents that lock nut 2 from coming off is housed in the end of bolt 6.
Valve body of the present invention 9 is in parallel installed with return filter, in the hydraulic work system process, when oil return flow less (less than the rated flow of filter); This closed check valve, oil return fluid from filter through (filtering contaminants), when oil return flow when big (greater than the rated flow of filter); This one-way valve is opened, and through (filtering contaminants), unnecessary fluid passes through from this one-way valve filler opening 10, cover plate 7, oil outlet 8 an oil return fluid part from filter; Make stability of flow through filter, can be greater than the rated flow of filter, realize that the engineering machinery oil return can the mounting filtering device; Reduce the pollution of fluid, improve the reliability of the decorum.
The undeclared part of other that the present invention relates to is identical with existing technology.

Claims (4)

1. big flow one-way valve that filter is used; It is characterized in that it comprises the valve body (9) that is connected with return filter, valve body (9) one sides are provided with filler opening (10), and opposite side is provided with oil outlet (8); Cover plate (7) is installed on the said oil outlet (8); Bolt (6) is installed on the cover plate (7), is with spring (4) on the bolt (6), spring (4) one ends withstand on the cover plate (7); The other end withstands and is installed in bolt (6) top board (3) equally, and the lock nut (2) that is positioned at pressing plate (3) outside also is installed on said bolt (6).
2. the big flow one-way valve that filter according to claim 1 is used is characterized in that also being set with on the said bolt (6) support tube (5), and said spring (4) one ends are connected with cover plate (7), and the other end is enclosed within on the support tube (5).
3. the big flow one-way valve that filter according to claim 2 is used is characterized in that said support tube (5) one ends are positioned at spring (4) inside, and the other end links to each other with pressing plate (7).
4. the big flow one-way valve that filter according to claim 3 is used; It is characterized in that said support tube (5), spring (4), pressing plate (3) between them with bolt (6) string together, and the cotter pin (2) that prevents that lock nut (2) from coming off is housed in the end of bolt (6).
CN201210366490.8A 2012-09-28 2012-09-28 The large-flow check valve of filter Active CN102829032B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210366490.8A CN102829032B (en) 2012-09-28 2012-09-28 The large-flow check valve of filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210366490.8A CN102829032B (en) 2012-09-28 2012-09-28 The large-flow check valve of filter

Publications (2)

Publication Number Publication Date
CN102829032A true CN102829032A (en) 2012-12-19
CN102829032B CN102829032B (en) 2016-06-22

Family

ID=47332281

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210366490.8A Active CN102829032B (en) 2012-09-28 2012-09-28 The large-flow check valve of filter

Country Status (1)

Country Link
CN (1) CN102829032B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB709847A (en) * 1952-01-29 1954-06-02 Dowty Equipment Ltd Improvements relating to non-return valves
CN201396489Y (en) * 2009-04-20 2010-02-03 陈震宇 Filtration one-way valve
CN201461623U (en) * 2009-05-06 2010-05-12 中国海洋石油总公司 Integrated return oil filtrating device
CN101725742A (en) * 2009-12-11 2010-06-09 上海诺玛液压系统有限公司 One-way overflow valve
CN202431652U (en) * 2011-12-21 2012-09-12 南京讯联液压件有限公司 Return oil filter with automatic oil-supplementing function
CN202789872U (en) * 2012-09-28 2013-03-13 南京讯联液压件有限公司 High flow one-way valve for filter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB709847A (en) * 1952-01-29 1954-06-02 Dowty Equipment Ltd Improvements relating to non-return valves
CN201396489Y (en) * 2009-04-20 2010-02-03 陈震宇 Filtration one-way valve
CN201461623U (en) * 2009-05-06 2010-05-12 中国海洋石油总公司 Integrated return oil filtrating device
CN101725742A (en) * 2009-12-11 2010-06-09 上海诺玛液压系统有限公司 One-way overflow valve
CN202431652U (en) * 2011-12-21 2012-09-12 南京讯联液压件有限公司 Return oil filter with automatic oil-supplementing function
CN202789872U (en) * 2012-09-28 2013-03-13 南京讯联液压件有限公司 High flow one-way valve for filter

Also Published As

Publication number Publication date
CN102829032B (en) 2016-06-22

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C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: 210033 Qixia Road, Jiangsu, Nanjing, Canton Road, No. 22

Patentee after: SOLINER (NANJING) INTELLIGENT TECHNOLOGY Co.,Ltd.

Address before: 210033 Qixia Road, Jiangsu, Nanjing, Canton Road, No. 22

Patentee before: Nanjing Soliner Hydraulic Component Co.,Ltd.

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 invention: Large flow check valve for filter

Effective date of registration: 20201218

Granted publication date: 20160622

Pledgee: Bank of China Limited Nanjing Chengdong Branch

Pledgor: Soliner (Nanjing) Intelligent Technology Co.,Ltd.

Registration number: Y2020980009588

PC01 Cancellation 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: 20211129

Granted publication date: 20160622

Pledgee: Bank of China Limited Nanjing Chengdong Branch

Pledgor: SOLINER (NANJING) INTELLIGENT TECHNOLOGY Co.,Ltd.

Registration number: Y2020980009588

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 invention: Large flow check valve for filter

Effective date of registration: 20211130

Granted publication date: 20160622

Pledgee: Bank of China Limited Nanjing Chengdong Branch

Pledgor: SOLINER (NANJING) INTELLIGENT TECHNOLOGY Co.,Ltd.

Registration number: Y2021980013644

CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: No. 99 Tuanjie Road, Yanchuangyuan, Nanjing Area, China (Jiangsu) Pilot Free Trade Zone, Nanjing, Jiangsu, 210000

Patentee after: Nanjing Xunlian Hydraulic Technology Co.,Ltd.

Address before: 210033 No.22 GuangYue Road, Qixia District, Nanjing City, Jiangsu Province

Patentee before: SOLINER (NANJING) INTELLIGENT TECHNOLOGY Co.,Ltd.

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

Granted publication date: 20160622

Pledgee: Bank of China Limited Nanjing Chengdong Branch

Pledgor: SOLINER (NANJING) INTELLIGENT TECHNOLOGY Co.,Ltd.

Registration number: Y2021980013644

TR01 Transfer of patent right
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Effective date of registration: 20240327

Address after: Building 140, No. 8 Liyuan North Road, Moling Street, Jiangning Development Zone, Jiangning District, Nanjing City, Jiangsu Province, 211100 (Jiangning Development Zone)

Patentee after: Nanjing Xunlian Fluid Technology Co.,Ltd.

Country or region after: China

Address before: No. 99 Tuanjie Road, Yanchuangyuan, Nanjing Area, China (Jiangsu) Pilot Free Trade Zone, Nanjing, Jiangsu, 210000

Patentee before: Nanjing Xunlian Hydraulic Technology Co.,Ltd.

Country or region before: China