CN2278811Y - Differential valve - Google Patents
Differential valve Download PDFInfo
- Publication number
- CN2278811Y CN2278811Y CN 96220783 CN96220783U CN2278811Y CN 2278811 Y CN2278811 Y CN 2278811Y CN 96220783 CN96220783 CN 96220783 CN 96220783 U CN96220783 U CN 96220783U CN 2278811 Y CN2278811 Y CN 2278811Y
- Authority
- CN
- China
- Prior art keywords
- valve
- interface
- control
- valves
- passage
- 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 - Fee Related
Links
Images
Landscapes
- Multiple-Way Valves (AREA)
Abstract
The utility model relates to a differential valve which belongs to hydraulic parts. The utility model comprises two logic valves or controlled on-off control valves (22). One end of each channel controlled by the two valves is connected with an interface (13) which is connected with a small effective driving area cavity (18) of a differential pressure driving medium; another two ends which are not connected are respectively used as interfaces (14, 15) which are connected with a driving liquid control valve (21), and one of the interfaces is also used as the interface (14) which is connected with a large effective driving area cavity (20) of the differential pressure driving medium; a control cavity of each valve is respectively communicated with the interfaces (14, 15) of the other valve. The utility model and the used connecting structure are simple, the mode is fixed and the utility model is a core control part for forming a differential pressure driving liquid path. The utility model has the advantages of reliable operation and convenient use.
Description
The utility model belongs to hydraulic unit, relates generally to the drive control valve that can form differential gearing.
Known desire forms differential gearing must set up complicated liquid road, uses more drive control valve, although differential gearing has specific function, is limited to above-mentioned formation reason, has often increased the fault on liquid road, and influence is used.
The utility model purpose be propose can easier formation differential pressure transmission fluid road the control valve block structure.
The purpose of this utility model is to realize like this, the control group valve that forms the differential pressure transmission comprises valve body, valve seat, link with the valve body activity and can form the spool of sealing pair with valve seat, being positioned at the spool valve seat forms the sealing pair both sides, is provided with liquid road interface in valve body surface, is subjected to the passage of sealing sub-control break-make, can accept to control liquid, link with spool place passage and the control channel of may command spool working position, and connection and sealed member.Two logical valves or the controlled on-off control valve that wherein contain described structure, its separately an end of the passage of controlling link each other, and as the interface that communicates with the less little useful area drive cavity of the effective transmission area of differential pressure transmission part; The passage of controlling does not join end in two valves, and respectively as the interface that links with the transmission fluid control valve, one of them interface is also simultaneously as the interface that links with the big effectively transmission area chamber of differential pressure driving component; The control chamber of each valve links with other the described interface of valve respectively.The control mode of two valves all is when controlling the liquid road for high pressure valve to be to open circuit, be path during low pressure.Like this, when first valve joins transmission fluid control valve output liquid road and is high pressure to the big effectively transmission area chamber liquor charging of driving component, the liquid road that second valve joins the transmission fluid control valve should be low pressure, promptly first valve is disconnected for logical second valve, this moment, transmission fluid was in the driving component liquor charging, the also interface that communicates with little effective transmission area chamber through first valve keeps the little effective transmission area chamber UNICOM with described driving component, thereby has formed the workpiece condition of differential pressure transmission.When second control valve that valve joins when it carries high hydraulic transmission fluid, first valve joins the liquid road and should be the low pressure reflux state, this moment first valve for disconnected second valve for logical, high hydraulic transmission fluid enters the little pressure chamber of driving component by second valve, realizes transmission.Thereby as the main member that differential liquid road forms, participate in having set up the working solution road of differential pressure transmission whole process, realized the purpose of this utility model.
The utility model can be made into the shared same valve body of one two on-off valves, and the passage of described two valves is linked up in valve body on request; Also comprise two described valves of monomer that connected with the coupling member of described little effective transmission area chamber connecting port by conduct, two kinds of structures all can satisfy usage requirement.
The utility model has formed the main liquid travel permit spare of liquid road differential pressure transmission with the pattern that is fixedly connected of two Controlled valves, connects and used device favourable minimizing accessory, minimizing job failure and reduction user cost thereby simplified the liquid road.
Accompanying drawing provides the signal of the utility model example structure.
Fig. 1 is the structural representation of integral type differential valve;
Fig. 2 is the differential circuit system diagram;
Fig. 3 is split type differential valve structural representation.
Among the figure: 1, screw plug 2, cross liquid cover 3, valve seat 4, spool 5, adjust ring 6, spring 7, seal ring 8, valve core housing 9, seal ring 10, spring screw plug 11, valve body 12, passage 13, interface 14, interface 15, interface 16, connect threeway 17, connecting pin 18, rod end chamber 19, jack 20, piston cavity 21, control valve 22, logical valve 23, connecting pipeline
The utility model is described in further detail below by embodiment.
First embodiment realizes differential pushing and sliding loop for being used for hydraulic support passing jack, and system pressure is 31.5 MPas, and this differential valve flow reaches 200 liters/minute.By valve plate this differential valve is communicated with jack.As Fig. 1 and 2.
Two parallel to each other, closed at both ends 12 passages are arranged on this valve body 11, with three passages that link all respectively with two passages and interface 13,14,15 thereof, the passage 13 of parallel channels 12 and UNICOM placed in the middle two passages with the two passage places of communicating, the mutual alignment of valve seat and spool is opposite each other separately to be respectively equipped with cone valve 3,4, two valves of controlling UNICOM's section separately.Promptly form this routine main structure.
During work, should make interface 14 with and the liquid road 23 that communicates of the piston cavity 20 of differential pressure transmission oil cylinder 19 link, interface 13 communicates with the rod end chamber 18 of oil cylinder, 15 interfaces and hydraulic control valve 21 link.
When there is high pressure on the liquid road when piston cavity is imported, act on second valve core, 4 afterbodys that link with interface 15 because of its high pressure, make this valve be in the turnoff state of sealing, in another passage that links with interface 14, first spool is opened in high pressure effect by interface 14, only communicates with cylinder rod chamber 18 through interface 13.Another interface 15 that link this moment is in low pressure because of opening circuit, and first spool is opened.So connection makes first valve keep the connection of oil cylinder piston two ends sap cavities, and the operating conditions of the differential pressure transmission of formation can obtain the transmission of differential pressure effect at the piston rod place.
When control valve with high pressure introducting interface 15, then the first spool afterbody is in high pressure, spool 4 is moved to right cut off the path of interface 14 and 13, and in the second spool afterbody because of being in back at this moment the liquid low-pressure state with the liquid road that links, oil cylinder piston chamber, it is joined the spool afterbody by interface 14 and also is low pressure, then this spool is removed in high pressure effect bottom right and is opened, and high pressure liquid enters the bar chamber 18 of oil cylinder by interface 13, forms the output that resets of differential pressure transmission.Thereby whole working procedure of differential pressure transmission have been finished.During use if with this valve as above with the transmission oil cylinder link the control of differential pressure transmission pass infusion path.
Second embodiment realizes differential pushing and sliding loop for being used for hydraulic support passing jack, and as Fig. 3, system pressure P is 31.5 MPas, and this differential valve flow reaches 200 liters/minute.By hydraulic tube and pipe joint, this valve and jack are linked together.This valve can be installed in flexibly and make things convenient for the mounting point.Its structural principle does not just have unified valve body with first example, the outlet of the two cone valves joint 16 with three-port structure is linked to each other, as interface 13 as example one, all the other structures and working procedure all with last routine basically identical.
Claims (2)
1, differential valve comprises valve body, valve seat, link with the valve body activity, and can form the spool of sealing pair with valve seat, be positioned at the spool valve seat and form the sealing pair both sides, and be provided with liquid road interface in valve body surface, be subjected to the passage of sealing sub-control break-make, can accept to control liquid, link and the control channel of may command spool working position with spool place passage, and connection and sealed member, it is characterized in that: the logical valve or the controlled on-off control valve (22) that contain two described structures, a two valves end of the passage of controlling separately link each other, and as the interface (13) that communicates with the less little effective transmission area chamber (18) of the effective transmission area of differential pressure transmission part; In addition two the passage of control end connection end respectively as and the interface (14,15) that links of transmission fluid control valve (21), one of them interface is also simultaneously as the interface (14) that links with the big effective transmission area chamber (20) of differential pressure driving component; The control chamber of each valve links with the described interface (14,15) of other valve respectively, and the control mode of two valves all is that to be controlled passage during by high pressure be to open circuit on control liquid road, and making this passage during low pressure is path.
2, according to the described differential valve of claim 1, it is characterized in that: described two valves can be made into one, shared same valve body (11), also comprise by two the described valves of monomer (22) as coupling member (16) connection that connects with described little effective transmission area chamber connecting port, by above-mentioned connecting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96220783 CN2278811Y (en) | 1996-09-10 | 1996-09-10 | Differential valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96220783 CN2278811Y (en) | 1996-09-10 | 1996-09-10 | Differential valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2278811Y true CN2278811Y (en) | 1998-04-15 |
Family
ID=33900942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96220783 Expired - Fee Related CN2278811Y (en) | 1996-09-10 | 1996-09-10 | Differential valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2278811Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569703A (en) * | 2015-12-11 | 2016-05-11 | 北京天地玛珂电液控制系统有限公司 | System and method for precise control over support moving and conveyor pushing of hydraulic supports |
-
1996
- 1996-09-10 CN CN 96220783 patent/CN2278811Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569703A (en) * | 2015-12-11 | 2016-05-11 | 北京天地玛珂电液控制系统有限公司 | System and method for precise control over support moving and conveyor pushing of hydraulic supports |
| CN105569703B (en) * | 2015-12-11 | 2018-08-28 | 北京天地玛珂电液控制系统有限公司 | A kind of accuracy-control system and method for hydraulic moving stand and pushing and sliding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0912850B1 (en) | Valve system | |
| CN201152297Y (en) | Engineering machinery speed-changer electrohydraulic gear shifting control valve | |
| AU4995700A (en) | High throughput crystal form screening workstation and method of use | |
| CN2278811Y (en) | Differential valve | |
| JP2000227102A (en) | Relief valve | |
| CN2290741Y (en) | Three-position four-way electromagnetic change valve | |
| CN2283160Y (en) | Electric or hydraulic operated change valve | |
| CN211550114U (en) | Pressurizing hydraulic system | |
| JPS60182375A (en) | Hydraulic system | |
| CN218760671U (en) | Hydraulic locking device for switch | |
| CN220037116U (en) | High-low pressure double-pump converging multi-way valve | |
| CN113638997B (en) | Active and passive mode integrated intelligent oil-gas vibration reduction system | |
| CN219672964U (en) | Hydraulic control reversing valve | |
| CN214698567U (en) | Hydraulic control bypass load sensing multi-way reversing valve hydraulic system | |
| CN219529435U (en) | Multi-action switching control system of hydraulic control handle | |
| CN212924200U (en) | Novel crane hydraulic valve group | |
| CN213206145U (en) | Hydraulic control one-way valve integrated module for hydraulic system | |
| CN213270512U (en) | Novel hydraulic reversing valve | |
| CN217926524U (en) | Hydraulic valve block | |
| CN2561979Y (en) | Hydraulic valve set for concrete pump | |
| CN215805458U (en) | Multifunctional integrated valve set of closed system and emergency variable oil pump | |
| CN215861048U (en) | Three-front three-reverse speed change control valve for power-controlled gear shifting of loader | |
| CN108394395B (en) | Brake valve block assembly for tractor | |
| CN215861051U (en) | Multifunctional and highly integrated valve | |
| CN2504422Y (en) | Three-position four-way valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |