CN201344161Y - Mechanical-feedback plug-in proportional throttle valve - Google Patents
Mechanical-feedback plug-in proportional throttle valve Download PDFInfo
- Publication number
- CN201344161Y CN201344161Y CNU2008202334030U CN200820233403U CN201344161Y CN 201344161 Y CN201344161 Y CN 201344161Y CN U2008202334030 U CNU2008202334030 U CN U2008202334030U CN 200820233403 U CN200820233403 U CN 200820233403U CN 201344161 Y CN201344161 Y CN 201344161Y
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- valve
- cover plate
- ring
- seal ring
- servo
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- 230000007704 transition Effects 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 abstract description 10
- 238000005266 casting Methods 0.000 abstract description 3
- 238000004512 die casting Methods 0.000 abstract description 3
- 238000005242 forging Methods 0.000 abstract description 3
- 238000005272 metallurgy Methods 0.000 abstract description 3
- 239000003245 coal Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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Abstract
The utility model relates to a mechanical-feedback plug-in proportional throttle valve, belonging to a flow throttle valve device for hydraulic rapid opening and safe reliable closing. A master valve spool is arranged in the axial hole of a valve sleeve. A top cover is sheathed with the large end of the valve sleeve. A return spring is arranged between the top cover and the master valve spool. A control cover plate is sheathed with the upper end of the convex part in the middle of the top cover. The upper end of a pilot servo valve body is connected with a proportional electromagnet. A servo piston rod is arranged in the middle of the control cover plate. The external side of the servo piston rod is sheathed with an internal valve sleeve. The internal valve sleeve is matched with the control cover plate. A feedback spring is connected with a spring seat. The spring seat is connected with the valve spool. The external side of the valve spool is sheathed with a servo slide valve sleeve. Six radial oil ports are arranged on the valve sleeve. A transition plate is installed on the side of the valve body. A reversing valve is arranged at the upper end of the transition plate. A sealing ring is installed at the lower end of the transition plate. The utility model has the advantages that the structure is simple, the opening is quick and the valve can be widely used on hydraulic plug-in valves in fields such as machine tool, casting and forging, die-casting, metallurgy, ship craft, coal mine and the like.
Description
Affiliated technical field:
The utility model relates to the mechanical feedback plug-in mounting type proportional throttle valve equipment of realizing the flow throttling in quick unlatching of a kind of mechanical feedback plug-in mounting type proportional throttle valve, particularly hydraulic pressure and the safe and reliable pass closed procedure.
Background technique:
Series of advantages such as at present, hydraulic cartridge valve has simple in structure, and flow resistance is little, impacts for a short time, and through-current capability is big, and action is fast, and amount of leakage is few have been widely used in industries such as lathe, casting forging, die casting, metallurgy, boats and ships, mine at present.Existing big flow proportional throttle valve adopts traditional mechanical structure, and speed of response is slow when opening under heavy traffic condition; Perhaps adopt servovalve to carry out position closed loop control as pilot stage, the cost of investment height relates under the situation that safe occasion need reliably close at some simultaneously, and there is insecure situation of cutting out again in existing valve.
Summary of the invention:
The purpose of this utility model, provide a kind of mechanical feedback plug-in mounting type proportional throttle valve, it is to adopt three grades of structure for amplifying, pilot stage adopts proportion electro-magnet to promote the guiding valve on four limits, amplifier stage adopts the servopiston bar, main adopts cartridge valve, adopts displacement and force feedback control between pilot stage and the amplifier stage, adopts quick servo-actuated control between main and the amplifier stage; External control fluid is realized reliably closing of main valve by integrated selector valve, outer pilot pressure acts on the servopiston, guarantee that servopiston is crushed on the following end position, close with the dynamic property of main through-flow fluid irrelevant, the opening process of main valve is instantaneous unlatching, maximum open amount is that ratio is controllable, overcomes the many not enough problem that exists in the prior art.
The utility model mechanical feedback plug-in mounting type proportional throttle valve takes following technological scheme to realize: it is made up of with guide's servomechanism and selector valve valve pocket and main valve plug, be provided with main valve filler opening and main valve oil outlet in the side of valve pocket, device main valve plug in the axial bore of valve pocket, top cover is nested with on the valve pocket larger diameter end, between top cover and the main valve plug Returnning spring is set, control cover plate is nested with the convex portion upper end in the middle of top cover, connect by screw, the control cover plate upper end connects the servo valve body of guide, install seal ring between control cover plate upper end and the servo valve body lower end of guide, the control cover plate lower end is provided with pilot stage filler opening and pilot stage return opening, pilot stage filler opening device seal ring, pilot stage return opening device seal ring, the servo valve body of guide upper end connects proportion electro-magnet, be provided with the servopiston bar in the middle of the control cover plate, the servopiston bar outside is nested with inner valve sleeve, inner valve sleeve and control cover plate cooperatively interact, servopiston bar one end is middle and main valve plug contact matching by top cover, the servopiston bar the other end is provided with feedback spring, feedback spring links to each other with spring seat, spring seat is connected with servo valve core of the spool valve, the servo valve core of the spool valve outside is nested with servo guiding valve valve pocket, servo spool valve is arranged with six radially hydraulic fluid ports, guide's servovalve body side surface is equipped with transition plate, the transition plate upper end is provided with selector valve, end device seal ring under the transition plate, the big small end of valve pocket place installs back-up ring and seal ring respectively, top cover installs back-up ring and seal ring respectively, top cover intermediate projections part is provided with seal ring with the control cover plate cooperation place, inner valve sleeve and control cover plate cooperation place are installed back-up ring and seal ring respectively, servopiston bar one end installs back-up ring and seal ring respectively by cooperation place in the middle of the top cover, back-up ring and seal ring are pushed down by wedge, and wedge is blocked by check ring.
The effect of the utility model mechanical feedback plug-in mounting type proportional throttle valve is simple in structure, open rapidly, spool is realized safe and reliable closing, adopt outer pilot pressure to realize the pass closed procedure of valve fast, be not subjected to main through-flow oil liquid pressure and flow effect, control degree and reliability height are widely used on the hydraulic cartridge valve of industries such as lathe, casting forging, die casting, metallurgy, boats and ships, mine.
Description of drawings:
The utility model mechanical feedback plug-in mounting type proportional throttle valve will describe in further detail in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the utility model mechanical feedback plug-in mounting type proportional throttle valve.
Fig. 2 is the hydraulic schematic diagram of the utility model mechanical feedback plug-in mounting type proportional throttle valve.
1---valve pocket 2---back-up ring 3---sealing ring 4---oil-in 5---main valve plug 6---piston rod 7---top cover 8---sealing ring 9---back-up ring 10---oil return opening 11---sealing ring 12---control cover plate 13 sealing rings 14---sealing ring 15---valve body 16---rebound 17---reversal valve 18---electromagnet 19---valve pocket 20---valve core of the spool valve 21---spring base 22---feedback spring 23---back-up ring 24---sealing ring 25---screw 26---inner valve sleeve 27---sealing ring 28---sealing ring 29---oil-in 30---sealing ring 31---back-up ring 32---wedge 33---check ring 34---back-moving spring 35---oil-out
Embodiment:
With reference to Fig. 1,2, the utility model mechanical feedback plug-in mounting type proportional throttle valve, it is made up of with guide's servomechanism and selector valve 17 valve pocket 1 and main valve plug 5, be provided with main valve filler opening 4 and main valve oil outlet 35 in the side of valve pocket 1, device main valve plug 5 in the axial bore of valve pocket 1, top cover 7 is nested with on valve pocket 1 larger diameter end, between top cover 7 and the main valve plug 5 Returnning spring 34 is set, control cover plate 12 is nested with the convex portion upper end in the middle of top cover 7, connect by screw 25, control cover plate 12 upper ends connect the servo valve body 15 of guide, device seal ring 13 between the servo valve body of control cover plate 12 upper ends and guide 15 lower ends, control cover plate 12 lower ends are provided with pilot stage filler opening 29 and pilot stage return opening 10, pilot stage filler opening 29 device seal rings 28, pilot stage return opening 10 device seal rings 11, the servo valve body of guide 15 upper ends connect proportion electro-magnet 18, be provided with servopiston bar 6 in the middle of the control cover plate 12, servopiston bar 6 outsides are nested with inner valve sleeve 26, inner valve sleeve 26 cooperatively interacts with control cover plate 12, servopiston bar 6 one ends are by top cover 7 middle and main valve plug 5 contact matching, servopiston bar 6 the other ends are provided with feedback spring 22, feedback spring 22 links to each other with spring seat 21, spring seat 21 is connected with servo valve core of the spool valve 20, servo valve core of the spool valve 20 outsides are nested with servo guiding valve valve pocket 19, servo guiding valve valve pocket 19 is provided with six radially hydraulic fluid ports, transition plate 16 is equipped with in the servo valve body of guide 15 sides, transition plate 16 upper ends are provided with selector valve 17,16 times end device seal rings 14 of transition plate, valve pocket 1 big small end place installs back-up ring 2 and seal ring 3 respectively, top cover 7 installs back-up ring 9 and seal ring 8 respectively, top cover 7 intermediate projections part is provided with seal ring 27 with control cover plate 12 cooperation places, inner valve sleeve 26 installs back-up ring 23 and seal ring 24 respectively with control cover plate 12 cooperation places, servopiston bar 6 one ends install back-up ring 31 and seal ring 30 respectively by cooperation place in the middle of the top cover 7, back-up ring 31 is pushed down by wedge 32 with seal ring 30, and wedge 32 is blocked by check ring 33.
The embodiment of the utility model mechanical feedback plug-in mounting type proportional throttle valve, it is made up of with guide's servomechanism and selector valve 17 valve pocket 1 and main valve plug 5, be provided with main valve filler opening 4 and main valve oil outlet 35 in the side of valve pocket 1, device main valve plug 5 in the axial bore of valve pocket 1, top cover 7 is nested with on valve pocket 1 larger diameter end, between top cover 7 and the main valve plug 5 Returnning spring 34 is set, control cover plate 12 is nested with the convex portion upper end in the middle of top cover 7, connect by screw 25, control cover plate 12 upper ends connect the servo valve body 15 of guide, device seal ring 13 between the servo valve body of control cover plate 12 upper ends and guide 15 lower ends, control cover plate 12 lower ends are provided with pilot stage filler opening 29 and pilot stage return opening 10, pilot stage filler opening 29 device seal rings 28, pilot stage return opening 10 device seal rings 11, the servo valve body of guide 15 upper ends connect proportion electro-magnet 18, be provided with servopiston bar 6 in the middle of the control cover plate 12, servopiston bar 6 outsides are nested with inner valve sleeve 26, inner valve sleeve 26 cooperatively interacts with control cover plate 12, servopiston bar 6 one ends are by top cover 7 middle and main valve plug 5 contact matching, servopiston bar 6 the other ends are provided with feedback spring 22, feedback spring 22 links to each other with spring seat 21, spring seat 21 is connected with servo valve core of the spool valve 20, servo valve core of the spool valve 20 outsides are nested with servo guiding valve valve pocket 19, servo guiding valve valve pocket 19 is provided with six radially hydraulic fluid ports, transition plate 16 is equipped with in the servo valve body of guide 15 sides, transition plate 16 upper ends are provided with selector valve 17,16 times end device seal rings 14 of transition plate, valve pocket 1 big small end place installs back-up ring 2 and seal ring 3 respectively, top cover 7 installs back-up ring 9 and seal ring 8 respectively, top cover 7 intermediate projections part is provided with seal ring 27 with control cover plate 12 cooperation places, inner valve sleeve 26 installs back-up ring 23 and seal ring 24 respectively with control cover plate 12 cooperation places, servopiston bar 6 one ends install back-up ring 31 and seal ring 30 respectively by cooperation place in the middle of the top cover 7, back-up ring 31 is pushed down by wedge 32 with seal ring 30, and wedge 32 is blocked by check ring 33.
Adopt external control fluid to realize reliably closing of main valve during use by integrated selector valve 17, outer pilot pressure acts on the servopiston bar 6, guarantee that servopiston bar 6 is crushed on the following end position, close with the dynamic property of main through-flow fluid irrelevant, the opening process of main valve is instantaneous unlatching, maximum open amount is that ratio is controllable, realizes that the opening and closing speed of response of whole system main valve is fast.
Claims (1)
1, a kind of mechanical feedback plug-in mounting type proportional throttle valve, it is made up of with guide's servomechanism and selector valve (17) valve pocket (1) and main valve plug (5), it is characterized in that being provided with main valve filler opening (4) and main valve oil outlet (35) in the side of valve pocket (1), device main valve plug (5) in the axial bore of valve pocket (1), top cover (7) is nested with on valve pocket (1) larger diameter end, between top cover (7) and the main valve plug (5) Returnning spring (34) is set, control cover plate (12) is nested with the convex portion upper end in the middle of top cover (7), connect by screw (25), control cover plate (12) upper end connects the servo valve body of guide (15), install seal ring (13) between control cover plate (12) upper end and the servo valve body of guide (15) lower end, control cover plate (12) lower end is provided with pilot stage filler opening (29) and pilot stage return opening (10), pilot stage filler opening (29) device seal ring (28), pilot stage return opening (10) device seal ring (11), the servo valve body of guide (15) upper end connects proportion electro-magnet (18), be provided with servopiston bar (6) in the middle of the control cover plate (12), servopiston bar (6) outside is nested with inner valve sleeve (26), inner valve sleeve (26) cooperatively interacts with control cover plate (12), servopiston bar (6) one ends are middle and main valve plug (5) contact matching by top cover (7), servopiston bar (6) the other end is provided with feedback spring (22), feedback spring (22) links to each other with spring seat (21), spring seat (21) is connected with servo valve core of the spool valve (20), servo valve core of the spool valve (20) outside is nested with servo guiding valve valve pocket (19), servo guiding valve valve pocket (19) is provided with six radially hydraulic fluid ports, transition plate (16) is equipped with in the servo valve body of guide (15) side, transition plate (16) upper end is provided with selector valve (17), transition plate (16) is end device seal ring (14) down, the big small end place of valve pocket (1) installs back-up ring (2) and seal ring (3) respectively, top cover (7) installs back-up ring (9) and seal ring (8) respectively, top cover (7) intermediate projections part is provided with seal ring (27) with control cover plate (12) cooperation place, inner valve sleeve (26) installs back-up ring (23) and seal ring (24) respectively with control cover plate (12) cooperation place, servopiston bar (6) one ends install back-up ring (31) and seal ring (30) respectively by cooperation place in the middle of the top cover (7), back-up ring (31) is pushed down by wedge (32) with seal ring (30), and wedge (32) is blocked by check ring (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202334030U CN201344161Y (en) | 2008-12-26 | 2008-12-26 | Mechanical-feedback plug-in proportional throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202334030U CN201344161Y (en) | 2008-12-26 | 2008-12-26 | Mechanical-feedback plug-in proportional throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201344161Y true CN201344161Y (en) | 2009-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202334030U Expired - Lifetime CN201344161Y (en) | 2008-12-26 | 2008-12-26 | Mechanical-feedback plug-in proportional throttle valve |
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| Country | Link |
|---|---|
| CN (1) | CN201344161Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162476A (en) * | 2011-06-02 | 2011-08-24 | 山东泰丰液压股份有限公司 | High-flow hydraulic feedback pilot control plug-type proportion throttle valve system |
| CN107830005A (en) * | 2017-11-28 | 2018-03-23 | 宁波文泽机电技术开发有限公司 | A kind of electromagnetic proportional valve |
| CN107989842A (en) * | 2017-11-28 | 2018-05-04 | 宁波文泽机电技术开发有限公司 | Electromagnetic proportional valve |
| CN109372813A (en) * | 2018-11-30 | 2019-02-22 | 武汉船用机械有限责任公司 | An electro-hydraulic proportional throttle valve and its control method |
| CN116838485A (en) * | 2023-07-25 | 2023-10-03 | 中船动力研究院有限公司 | Electrohydraulic servo mechanism for diesel engine speed regulator |
-
2008
- 2008-12-26 CN CNU2008202334030U patent/CN201344161Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162476A (en) * | 2011-06-02 | 2011-08-24 | 山东泰丰液压股份有限公司 | High-flow hydraulic feedback pilot control plug-type proportion throttle valve system |
| CN107830005A (en) * | 2017-11-28 | 2018-03-23 | 宁波文泽机电技术开发有限公司 | A kind of electromagnetic proportional valve |
| CN107989842A (en) * | 2017-11-28 | 2018-05-04 | 宁波文泽机电技术开发有限公司 | Electromagnetic proportional valve |
| CN109372813A (en) * | 2018-11-30 | 2019-02-22 | 武汉船用机械有限责任公司 | An electro-hydraulic proportional throttle valve and its control method |
| CN116838485A (en) * | 2023-07-25 | 2023-10-03 | 中船动力研究院有限公司 | Electrohydraulic servo mechanism for diesel engine speed regulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091111 Effective date of abandoning: 20081226 |