CN105065357A - Electro-hydraulic directional valve - Google Patents
Electro-hydraulic directional valve Download PDFInfo
- Publication number
- CN105065357A CN105065357A CN201510482113.4A CN201510482113A CN105065357A CN 105065357 A CN105065357 A CN 105065357A CN 201510482113 A CN201510482113 A CN 201510482113A CN 105065357 A CN105065357 A CN 105065357A
- Authority
- CN
- China
- Prior art keywords
- spool
- valve body
- valve
- control
- electro
- 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
Links
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 239000012530 fluid Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 230000013011 mating Effects 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
Abstract
The invention discloses an electro-hydraulic directional valve. The electro-hydraulic directional valve comprises a main valve body, at least one electromagnetic directional valve and at least one inserting valve. The electromagnetic directional valves and the inserting valves are arranged on the main valve body, and a main oil path and a control oil path are arranged in the main valve body; each electromagnetic directional valve comprises a first valve body, wherein a plurality of first oil ways and a plurality of first valve elements matched with the first oil paths are arranged in the first valve body; each inserting valve comprises a cylindrical second valve body and a second valve element which is packaged in an inner cavity of the second valve body through a second plug; the inner cavity of each second valve body is separated into a control cavity and a liquid inlet cavity through the corresponding second valve element, and control openings communicated with the control cavities, liquid inlets and liquid outlets are formed in the second valve elements, wherein the liquid inlets and the liquid outlets are communicated with the liquid inlet cavities; and the first oil paths are communicated with the control openings of the inserting valves through the control oil paths, and the liquid inlet cavities are connected into the main oil path in series. The electro-hydraulic directional valve is simple in structure, small in size, easy to machine, capable of carrying out complex control over a hydraulic system, and rapid in reaction.
Description
Technical field
The present invention relates to a kind of electro-hydraulic reversing valve.
Background technique
Electro-hydraulic reversing valve is hydraulicchange-over valve incorporated with solenoid-operated pilot valves, normally drive a hydraulic control valve to control the break-make of oil circuit and flow by one or more solenoid directional control valve, in existing electro-hydraulic reversing valve, solenoid directional control valve and hydraulic control valve normally all adopt the sliding valve structure of rod-type spool, its control mode is more single, and along with the function of current hydraulic system more and more abundanter, often need to utilize electro-hydraulic reversing valve to carry out comparatively complicated control to hydraulic system, current way normally increases the quantity of electro-hydraulic reversing valve, and correspondingly design complicated oil circuit, cause the structure of hydraulic system too complicated, shared space also increases accordingly, inconvenience uses, in addition, because the required precision of sliding valve structure to spool and valve body is higher, processing is difficulty comparatively, cost is higher, also inconvenience for different use occasions and need redesign oil channel structures, adaptability is poor, and the flow reaction velocity of sliding valve structure is also comparatively slow, cannot meet the demand to machinery action reaction velocity in current hydraulic equipment.
Summary of the invention
In order to solve the problem, the object of the present invention is to provide that a kind of structure is simple, volume is little, the electro-hydraulic reversing valve of complicated control mode can be realized.
The present invention is the technological scheme that its technical problem of solution adopts:
A kind of electro-hydraulic reversing valve, comprise a main valve body, at least one solenoid directional control valve and at least one cartridge valve, solenoid directional control valve and cartridge valve are arranged on main valve body, and main valve body inside is provided with working connection and oil circuit control, wherein,
Described solenoid directional control valve comprises one first valve body, some first spools being provided with some first oil circuits in first valve body and matching with each first oil circuit respectively, each first spool is encapsulated in the first valve body by one first plug respectively, the front portion of the first plug offers a groove, slide in groove and be provided with a permanent-magnet pieces, the outside of each first plug is respectively equipped with an electromagnetic coil, this electromagnetic coil makes it move forward and backward along groove for promoting permanent-magnet pieces, and the first spool is fixed on the keying that permanent-magnet pieces can move forward and backward to control with permanent-magnet pieces the first oil circuit;
Described cartridge valve comprises the second valve body of a tubular, one second spool is encapsulated in the inner chamber of the second valve body by one second plug, the middle part of this second spool and the inwall of the second valve body fit tightly and the inner chamber of the second valve body are separated into a control chamber and an admission chamber, the outer wall of the second valve body is provided with the control mouth be connected with control chamber, and the liquid entering hole be connected with admission chamber and liquid outlet; The fluid being entered control chamber by control mouth can drive the second spool to move to control the break-make between liquid entering hole and liquid outlet and uninterrupted;
First oil circuit is communicated with the control mouth of cartridge valve by oil circuit control, and admission chamber is connected in working connection.
Preferably, each first oil circuit is interconnected.
Preferably, the first described spool is bevel-type spool.
Preferably, the front end of described permanent-magnet pieces offers a mounting groove, the cross section of this mounting groove is in " convex " font, and the diameter of its front portion is less than the diameter at rear portion, the rear portion of the first spool is provided with the elastic mounting part with this mounting groove mating shapes, and this elastic mounting part is embedded in mounting groove to be fixed on permanent-magnet pieces by the first spool.
Preferably, the first described valve core upper sleeve is provided with one first spring, and one end of this first spring is fixed on the first valve body, and the other end is fixed on the first spool, for the first spool being maintained the state of opening and closing of fault first oil circuit.
Preferably, the rear portion of described second spool offers an installation cavity, and one second spring is plugged in this installation cavity, and the two ends of this second spring are separately fixed on the second spool and the second plug, for being pressed on liquid outlet the second spool with closed liquid outlet.
Preferably, described cartridge valve also comprises one the 3rd spool, 3rd spool is encapsulated in the second valve body by one the 3rd plug, and sentences closed liquid outlet by one the 3rd spring compression at liquid outlet, and the fluid flowing to liquid outlet from liquid entering hole can be pushed the 3rd spool open and flow out from liquid outlet.
Preferably, the outer wall of described second valve body is provided with external screw thread, and cartridge valve is screwed onto in main valve body by this external screw thread.
The invention has the beneficial effects as follows: in the present invention, each first spool controls the break-make of each first oil circuit respectively, first oil circuit is communicated with the control mouth of cartridge valve by oil circuit control, thus the second spool can be driven to move by control chamber, and then break-make and the uninterrupted of working connection can be controlled, complicated control can be carried out to hydraulic system, and small volume, need for different uses, only need change the structure of working connection and oil circuit control in main valve body, be easy to processing, strong adaptability, the sliding valve structure that this cartridge valve is relatively traditional, also there is larger flow, the withstand voltage properties of reaction velocity and Geng Gao faster, simultaneously also lower to the requirement of machining accuracy, effectively can reduce cost of production.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is partial exploded view of the present invention;
Fig. 2 is partial cutaway schematic of the present invention;
Fig. 3 is principle schematic of the present invention;
Fig. 4 is the structural representation of solenoid directional control valve in the present invention;
Fig. 5 is the structural representation of cartridge valve in the present invention.
Embodiment
Referring to figs. 1 through Fig. 5, a kind of electro-hydraulic reversing valve, comprise a main valve body 10, one solenoid directional control valve 20 and some cartridge valves 30, solenoid directional control valve 20 and cartridge valve 30 are arranged on main valve body 10, main valve body 10 inside is provided with working connection 11 and oil circuit control 12, wherein, solenoid directional control valve 20 comprises one first valve body 21, two first spools 22 being provided with two first oil circuits 211 in first valve body 21 and matching with each first oil circuit 211 respectively, each first spool 22 is encapsulated in the first valve body 21 by one first plug 25 respectively, the front portion of the first plug 25 offers a groove 251, slide in groove 251 and be provided with a permanent-magnet pieces 24, the outside of each first plug 25 is respectively equipped with an electromagnetic coil 26, this electromagnetic coil 26 makes it move forward and backward along groove 251 for promoting permanent-magnet pieces 24, first spool 22 is fixed on can be movable with the keying controlling the first oil circuit 211 with permanent-magnet pieces 24 on permanent-magnet pieces 24, cartridge valve 30 comprises the second valve body 31 of a tubular, one second spool 32 is encapsulated in the inner chamber of the second valve body 31 by one second plug 33, the middle part of this second spool 32 and the inwall of the second valve body 31 fit tightly and the inner chamber of the second valve body 31 are separated into control chamber 312 and an admission chamber 314, the outer wall of the second spool 31 is provided with the control mouth 313 be connected with control chamber 312, and the liquid entering hole 315 be connected with admission chamber 314 and liquid outlet 316, the fluid being entered control chamber 312 by control mouth 313 can drive the second spool 32 to move to control the break-make between liquid entering hole 315 and liquid outlet 316 and uninterrupted, first oil circuit 211 is communicated with the control mouth 313 of cartridge valve 30 by oil circuit control 12, and admission chamber 314 is connected in working connection 11.
In the present invention, each first spool 22 controls the break-make of each first oil circuit 211 respectively, first oil circuit 211 is communicated with the control mouth 313 of cartridge valve 30 by oil circuit control 12, thus the second spool 32 can be driven to move by control chamber 312, and then break-make and the uninterrupted of working connection 11 can be controlled, complicated control can be carried out to hydraulic system, and small volume, need for different uses, only need change the structure of working connection 11 and oil circuit control 12 in main valve body 10, be easy to processing, strong adaptability, the sliding valve structure that this cartridge valve 30 is relatively traditional, also there is larger flow, the withstand voltage properties of reaction velocity and Geng Gao faster, simultaneously also lower to the requirement of machining accuracy, effectively can reduce cost of production.
In solenoid directional control valve 20, each first oil circuit 211 is interconnected, and can enrich the control mode of solenoid directional control valve 20 further, and the first spool 22 adopts bevel-type valve core structure, can improve the flow of the first oil circuit 211, accelerate the reaction velocity of solenoid directional control valve 20.In the present embodiment, the quantity of the first spool 22 is two, can meet the demand of most of hydraulic system, and certainly, in practical application, the quantity of the first spool 22 and the first oil circuit 211 and structure also can flexible Choice and designs as required, are not limited thereto.
The front end of permanent-magnet pieces 24 offers a mounting groove 241, the cross section of this mounting groove 241 is in " convex " font, and the diameter of its front portion is less than the diameter at rear portion, the rear portion of the first spool 22 is provided with the elastic mounting part 221 with this mounting groove 241 mating shapes, and this elastic mounting part 221 is embedded in mounting groove 241 to be fixed on permanent-magnet pieces 24 by the first spool 22.First spool 22 also can overall by elastic material as making such as plastic cement, this kind of anatomical connectivity is firm, without the need to using other auxiliary fixing structures, being easy to assembling, can enhancing productivity, and is easy to dismounting and changes the first spool 22 and permanent-magnet pieces 24.
First spool 22 is arranged with one first spring 23, one end of this first spring 23 is fixed on the first valve body 21, and the other end is fixed on the first spool 22, for the first spool 22 being maintained the state of closed first oil circuit 211; The rear portion of the second spool 32 offers an installation cavity, one second spring 34 is plugged in this installation cavity, the two ends of this second spring 34 are separately fixed on the second spool 32 and the second plug 33, for being pressed on liquid outlet 316 second spool 32 with closed liquid outlet 316.This structure contributes to reducing energy consumption, energy saving.
In the present embodiment, cartridge valve 30 also comprises one the 3rd spool 35,3rd spool 35 is encapsulated in the second valve body 31 by one the 3rd plug 37, and be pressed on liquid outlet 316 by one the 3rd spring 36 and sentence closed liquid outlet 316, the fluid flowing to liquid outlet 316 from liquid entering hole 315 can be pushed the 3rd spool 35 open and flow out from liquid outlet 316.This structure can limit the flow direction of fluid in working connection 11, effectively can simplify the structure of hydraulic system, easy to use.
The outer wall of the second valve body 31 is provided with external screw thread 311, be provided with the internal screw thread matched with this external screw thread 311 in main valve body 10 simultaneously, cartridge valve 30 is screwed onto in main valve body 10 by this external screw thread 311, is convenient to installation and removal, can conveniently changes cartridge valve 30.
The foregoing is only preferred embodiments of the present invention, as long as the technological scheme realizing the object of the invention with basic same approach all belongs within protection scope of the present invention.
Claims (8)
1. an electro-hydraulic reversing valve, it is characterized in that: comprise a main valve body (10), at least one solenoid directional control valve (20) and at least one cartridge valve (30), solenoid directional control valve (20) and cartridge valve (30) are arranged on main valve body (10), main valve body (10) inside is provided with working connection (11) and oil circuit control (12), wherein
Described solenoid directional control valve (20) comprises one first valve body (21), some first spools (22) being provided with some first oil circuits (211) in first valve body (21) and matching with each first oil circuit (211) respectively, each first spool (22) is encapsulated in the first valve body (21) by one first plug (25) respectively, the front portion of the first plug (25) offers a groove (251), slide in groove (251) and be provided with a permanent-magnet pieces (24), the outside of each first plug (25) is respectively equipped with an electromagnetic coil (26), this electromagnetic coil (26) makes it move forward and backward along groove (251) for promoting permanent-magnet pieces (24), first spool (22) is fixed on permanent-magnet pieces (24) above can be movable with the break-make controlling the first oil circuit (211) with permanent-magnet pieces (24),
Described cartridge valve (30) comprises second valve body (31) of a tubular, one second spool (32) is encapsulated in the inner chamber of the second valve body (31) by one second plug (33), the middle part of this second spool (32) and the inwall of the second valve body (31) fit tightly and the inner chamber of the second valve body (31) are separated into a control chamber (312) and an admission chamber (314), the outer wall of the second valve body (31) is provided with the control mouth (313) be connected with control chamber (312), and the liquid entering hole (315) be connected with admission chamber (314) and liquid outlet (316); The second spool (32) can be driven mobile to control break-make between liquid entering hole (315) and liquid outlet (316) and uninterrupted by controlling fluid that mouth (313) enters control chamber (312);
First oil circuit (211) is communicated with the control mouth (313) of cartridge valve (30) by oil circuit control (12), and admission chamber (314) is connected in working connection (11).
2. a kind of electro-hydraulic reversing valve according to claim 1, is characterized in that: each first oil circuit (211) is interconnected.
3. a kind of electro-hydraulic reversing valve according to claim 1, is characterized in that: described the first spool (22) is bevel-type spool.
4. a kind of electro-hydraulic reversing valve according to claim 1, it is characterized in that: the front end of described permanent-magnet pieces (24) offers a mounting groove (241), the cross section of this mounting groove (241) is in " convex " font, and the diameter of its front portion is less than the diameter at rear portion, the rear portion of the first spool (22) is provided with the elastic mounting part (221) with this mounting groove (241) mating shapes, and this elastic mounting part (221) is embedded in mounting groove (241) to be fixed on permanent-magnet pieces (24) by the first spool (22).
5. a kind of electro-hydraulic reversing valve according to claim 1, it is characterized in that: described the first spool (22) is arranged with one first spring (23), one end of this first spring (23) is fixed on the first valve body (21), the other end is fixed on the first spool (22), for the first spool (22) being maintained the state of opening and closing of fault first oil circuit (211).
6. a kind of electro-hydraulic reversing valve according to claim 1, it is characterized in that: the rear portion of described second spool (32) offers an installation cavity, one second spring (34) is plugged in this installation cavity, the two ends of this second spring (34) are separately fixed on the second spool (32) and the second plug (33), for being pressed on liquid outlet (316) the second spool (32) with closed liquid outlet (316).
7. a kind of electro-hydraulic reversing valve according to claim 1, it is characterized in that: described cartridge valve (30) also comprises one the 3rd spool (35), 3rd spool (35) is encapsulated in the second valve body (31) by one the 3rd plug (37), and be pressed on liquid outlet (316) by one the 3rd spring (36) and sentence closed liquid outlet (316), the fluid flowing to liquid outlet (316) from liquid entering hole (315) can be pushed the 3rd spool (35) open and flow out from liquid outlet (316).
8. a kind of electro-hydraulic reversing valve according to claim 1, is characterized in that: the outer wall of described second valve body (31) is provided with external screw thread (311), and cartridge valve (30) is screwed onto in main valve body (10) by this external screw thread (311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482113.4A CN105065357B (en) | 2015-08-07 | 2015-08-07 | A kind of electro-hydraulic reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482113.4A CN105065357B (en) | 2015-08-07 | 2015-08-07 | A kind of electro-hydraulic reversing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105065357A true CN105065357A (en) | 2015-11-18 |
| CN105065357B CN105065357B (en) | 2017-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510482113.4A Active CN105065357B (en) | 2015-08-07 | 2015-08-07 | A kind of electro-hydraulic reversing valve |
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| Country | Link |
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| CN (1) | CN105065357B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840575A (en) * | 2015-12-30 | 2016-08-10 | 中船重工重庆液压机电有限公司 | Slowly open-close electro-hydraulic directional valve |
| CN106438543A (en) * | 2016-10-10 | 2017-02-22 | 合肥协力液压科技有限公司 | Electromagnetic cartridge valve |
| CN116148218A (en) * | 2023-01-06 | 2023-05-23 | 安徽省屯溪高压阀门股份有限公司 | High-pressure circulation oil monitoring equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5752546A (en) * | 1995-09-14 | 1998-05-19 | Shimadzu Corporation | Fluid control valves |
| JP3811643B2 (en) * | 2001-12-03 | 2006-08-23 | カヤバ工業株式会社 | Displacement measuring device |
| CN101294591A (en) * | 2007-04-24 | 2008-10-29 | 上海立新液压有限公司 | Two-position three-way electrohydraulic reversal valve |
| CN202833374U (en) * | 2012-08-20 | 2013-03-27 | 东莞市神煜机械有限公司 | Electro-hydraulic reversing valve with adjustable oil drainage way |
| CN104033438A (en) * | 2014-06-09 | 2014-09-10 | 烟台宝钢钢管有限责任公司 | Multi-functional hydraulic-jamming preventing pilot valve for electro-hydraulic directional valve |
| CN204921514U (en) * | 2015-08-07 | 2015-12-30 | 中山市文天长液压机械有限公司 | Electro -hydraulic reversing valve |
-
2015
- 2015-08-07 CN CN201510482113.4A patent/CN105065357B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5752546A (en) * | 1995-09-14 | 1998-05-19 | Shimadzu Corporation | Fluid control valves |
| JP3811643B2 (en) * | 2001-12-03 | 2006-08-23 | カヤバ工業株式会社 | Displacement measuring device |
| CN101294591A (en) * | 2007-04-24 | 2008-10-29 | 上海立新液压有限公司 | Two-position three-way electrohydraulic reversal valve |
| CN202833374U (en) * | 2012-08-20 | 2013-03-27 | 东莞市神煜机械有限公司 | Electro-hydraulic reversing valve with adjustable oil drainage way |
| CN104033438A (en) * | 2014-06-09 | 2014-09-10 | 烟台宝钢钢管有限责任公司 | Multi-functional hydraulic-jamming preventing pilot valve for electro-hydraulic directional valve |
| CN204921514U (en) * | 2015-08-07 | 2015-12-30 | 中山市文天长液压机械有限公司 | Electro -hydraulic reversing valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840575A (en) * | 2015-12-30 | 2016-08-10 | 中船重工重庆液压机电有限公司 | Slowly open-close electro-hydraulic directional valve |
| CN106438543A (en) * | 2016-10-10 | 2017-02-22 | 合肥协力液压科技有限公司 | Electromagnetic cartridge valve |
| CN106438543B (en) * | 2016-10-10 | 2018-03-20 | 合肥协力液压科技有限公司 | A kind of electromagnetic cartridge valve |
| CN116148218A (en) * | 2023-01-06 | 2023-05-23 | 安徽省屯溪高压阀门股份有限公司 | High-pressure circulation oil monitoring equipment |
| CN116148218B (en) * | 2023-01-06 | 2024-01-30 | 安徽省屯溪高压阀门股份有限公司 | High-pressure circulation oil monitoring equipment |
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| Publication number | Publication date |
|---|---|
| CN105065357B (en) | 2017-03-15 |
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Denomination of invention: Electro-hydraulic directional valve Effective date of registration: 20171124 Granted publication date: 20170315 Pledgee: China Everbright Bank Zhongshan branch Pledgor: Zhongshan Wentianchang Hydraulic Machinery Co., Ltd. Registration number: 2017440020058 |
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Date of cancellation: 20181214 Granted publication date: 20170315 Pledgee: China Everbright Bank Zhongshan branch Pledgor: Zhongshan Wentianchang Hydraulic Machinery Co., Ltd. Registration number: 2017440020058 |
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Denomination of invention: Electro-hydraulic directional valve Effective date of registration: 20181217 Granted publication date: 20170315 Pledgee: China Everbright Bank Zhongshan branch Pledgor: Zhongshan Wentianchang Hydraulic Machinery Co., Ltd. Registration number: 2018440020082 |
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| 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: 20200526 Granted publication date: 20170315 Pledgee: China Everbright Bank Zhongshan branch Pledgor: ZHONGSHAN WENTIANCHANG HYDRAULIC MACHINERY Co.,Ltd. Registration number: 2018440020082 |
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| 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: Electro-hydraulic directional valve Effective date of registration: 20200628 Granted publication date: 20170315 Pledgee: China Everbright Bank Zhongshan branch Pledgor: ZHONGSHAN WENTIANCHANG HYDRAULIC MACHINERY Co.,Ltd. Registration number: Y2020980003508 |