CN205047559U - Hydraulic control valve - Google Patents

Hydraulic control valve Download PDF

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Publication number
CN205047559U
CN205047559U CN201520769006.5U CN201520769006U CN205047559U CN 205047559 U CN205047559 U CN 205047559U CN 201520769006 U CN201520769006 U CN 201520769006U CN 205047559 U CN205047559 U CN 205047559U
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CN
China
Prior art keywords
valve
movable sheath
guide
hydraulic control
control valve
Prior art date
Application number
CN201520769006.5U
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Chinese (zh)
Inventor
单俊峰
罗占涛
姚海峰
Original Assignee
浙江华益精密机械股份有限公司
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Priority to CN201520769006.5U priority Critical patent/CN205047559U/en
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Publication of CN205047559U publication Critical patent/CN205047559U/en

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Abstract

The utility model discloses a hydraulic control valve belongs to the hydraulic pressure field, solves prior art, need just satisfy the technical problem of two kinds of functions of level pressure overflow and off -load through complicated structure simultaneously, the utility model provides a hydraulic control valve includes guide's valve barrel and main valve cover, is equipped with guide's disk seat, guide's case subassembly and movable sleeve in guide's valve barrel, is equipped with main valve core in the main valve cover, is equipped with valve opening and off -load hole on guide's disk seat, and guide's case subassembly is used for the shutoff valve opening, and the control valve still includes electromagnetic means, and electromagnetic means circular telegram drive movable sleeve moves in order to open or closed off -load hole. The utility model discloses be applied to among the hydraulic system.

Description

A kind of hydraulic control valve
[technical field]
The utility model relates to a kind of hydraulic control valve.
[background technique]
In most of Constant Pump System or pumping plant, when system is not done work to actuator, need pump off-load, thus reach energy-conservation object, in prior art, the relief valve that usual employing selector valve adds band remote control mouth realizes, or uses the unloading electromagnetic valve of board-like installation form to realize.But there is complex structure, volume greatly, costly, install the problems such as inconvenient in these schemes.
[summary of the invention]
The technical problem that the utility model solves is to provide a kind of hydraulic control valve, has level pressure overflow and off-load function simultaneously.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of hydraulic control valve, comprise guide's valve pocket and main valve housing, guide's valve seat, pilot valve assembly and movable sheath is provided with in described guide's valve pocket, main valve plug is provided with in described main valve housing, described guide's valve seat is provided with valve opening and unloading hole, described pilot valve assembly is used for valve opening described in shutoff, and described control valve also comprises calutron, and calutron energising drives movable sheath to move to open or close described unloading hole.
Further, described guide's valve seat is provided with the boss extended towards movable sheath direction, the end face of described boss arranges described valve opening, the sidewall of described boss arranges described unloading hole and communicates with valve opening, described movable sheath is socketed described boss and is closed by unloading hole, the inner headed face of described movable sheath is provided with liquid outlet opening, and during calutron energising, movable sheath moves and liquid outlet opening is communicated with unloading hole.
Further, described calutron comprises magnet case and is sleeved on the coil on magnet case, and the other end that described guide's valve pocket is relative with main valve housing connects described magnet case.
Further, be also provided with drain hole in described movable sheath, during described calutron power-off, described drain hole is positioned at above boss, and described liquid outlet opening is positioned at the below of described unloading hole.
Further, described movable sheath is metalwork, produces electromagnetic attraction after described coil electricity between magnet case and movable sheath, is provided with Compress Spring between described movable sheath and magnet case.
Further, described control valve also comprises inner sleeve, and described movable sheath inner headed face is provided with the step be positioned at above described unloading hole, and described inner sleeve and movable sheath interference fit also offset with step, put and be provided with the intercommunicating pore relative with liquid outlet opening in described.
Further, described liquid outlet opening is positioned at above boss.
Further, described movable sheath is provided with magnetic part, produces electromagnetic repulsion force after described coil electricity between magnet case and movable sheath, is provided with extension spring between described movable sheath and magnet case.
Further, described pilot valve assembly comprises pilot valve, damping piece and adjusting screw rod, in described movable sheath, described pilot valve and damping piece are installed, described pilot valve is used for valve opening described in shutoff, described adjusting screw rod is threaded described magnet case, and described damping piece is between adjusting screw rod and pilot valve.
A kind of hydraulic control valve, comprise guide's valve pocket and the main valve housing of docking, guide's valve seat is provided with in described guide's valve pocket, pilot valve assembly, main valve plug is provided with in described main valve housing, described guide's valve seat is provided with valve opening, described pilot valve assembly comprises pilot valve, slide block, adjusting screw rod and spring body, the two ends of described slide block arrange described pilot valve and spring body respectively, the decrement of described adjusting screw rod Regulation spring body, the elastic force effect of described spring body makes pilot valve by valve opening shutoff, described hydraulic control valve also calutron, described calutron energising can drive slide block to drive pilot valve to move and be opened by valve opening.
The beneficial effects of the utility model:
Hydraulic control valve of the present utility model, has the function of level pressure overflow and off-load, during level pressure overflow, fluid enters valve opening through damping hole, and after the pressure of fluid arrives certain value, fluid just can back down pilot valve assembly, then main valve plug moves up, and valve body is opened.When off-load, after calutron, the both sides conducting of guide's valve seat, fluid also can drive main valve plug to move under less oil pressure, valve body is opened, therefore both hydraulic control valve set function of the present utility model, and mutual operation is independent of each other, and simplifies hydraulic system compared to existing technology, reduce volume, convenience is installed and off-load is rapid.
These features of the present utility model and advantage will embodiment below, exposure detailed in accompanying drawing.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the enlarged view at A place in Fig. 1;
Fig. 3 is the middle movable sheath of the utility model embodiment two and the connection diagram of guide's valve seat;
Fig. 4 is the structural representation of the utility model embodiment three.
[embodiment]
The technological scheme of accompanying drawing to the utility model embodiment below in conjunction with the utility model embodiment is explained and illustrated, but following embodiment is only preferred embodiment of the present utility model, and not all.Based on the embodiment in mode of execution, those skilled in the art under the prerequisite not making creative work obtain other embodiment, all belong to protection domain of the present utility model.
Embodiment one:
With reference to figure 1 and Fig. 2, shown a kind of hydraulic control valve, comprise guide's valve pocket 1 and the main valve housing 2 of docking, guide's valve seat 3 is provided with in guide's valve pocket 1, pilot valve assembly 5 and movable sheath 4, main valve plug 6 is provided with in main valve housing 2, main valve plug 6 is provided with damping hole 61, guide's valve seat 3 is between movable sheath 4 and main valve plug 6, Returnning spring 82 is provided with between main valve plug 6 and guide's valve seat 3, guide's valve seat 3 is provided with valve opening 31 and unloading hole 32, pilot valve assembly 5 is for shutoff valve opening 31, control valve also comprises calutron 7, calutron 7 is energized and drives movable sheath 4 to move to open and closed unloading hole 32.Hydraulic control valve has the function of level pressure overflow and off-load, during level pressure overflow, unloading hole 32 is closed by movable sheath 4, fluid enters valve opening 31 through damping hole 61, after the pressure of fluid arrives certain value, fluid just can back down pilot valve assembly 5, flow out from guide's valve pocket 1, then main valve plug 6 moves up, valve body is opened, and after oil liquid pressure reduces, pilot valve assembly 5 is again by valve opening 31 shutoff, pressure above main valve plug 6 strengthens, and the restoring force of Returnning spring 82 makes main valve plug 6 move down to be closed by valve body.When off-load, calutron 7 is energized and drives movable sheath 4 to be opened by the unloading hole 32 originally closed, and fluid is after damping hole 61 and unloading hole 32, and flow out from guide's valve pocket 1, main valve plug 6 moves up, and valve body is opened.
Wherein, guide's valve seat 3 is provided with the boss 33 extended towards movable sheath 4 direction, and the end face of boss 33 arranges valve opening 31, and the sidewall of boss 33 arranges unloading hole 32 and communicates with valve opening 31, movable sheath 4 is socketed boss 33, pilot valve assembly 5 offsets through movable sheath 4 and valve opening 31, and the inner headed face of movable sheath 4 is provided with liquid outlet opening 42, during level pressure overflow, unloading hole 32 is closed by the inner headed face of movable sheath 4, fluid backs down pilot valve assembly 5 and just can enter in guide's valve pocket 1, could move up by main valve plug 6, and valve body is opened.When calutron 7 is energized, movable sheath 4 moves and liquid outlet opening 42 is communicated with unloading hole 32, and the fluid in valve opening 31 is discharged after unloading hole 32 and liquid outlet opening 42, and fluid can make main valve plug 6 move up under any pressure, is opened by valve body.In other embodiments of the present utility model, also can not need to set out fluid apertures on movable sheath, calutron drives movable sheath to rise, and the bottom of movable sheath is higher than after unloading hole, and unloading hole can be discharged fluid and be carried out off-load.
The coil 72 that the calutron 7 adopted comprises magnet case 71 and is sleeved on magnet case 71, magnet case 71 is slug, the other end that guide's valve pocket 1 is relative with main valve housing 2 connects magnet case 71, and coil 72 energising makes magnet case 71 lead to magnetic, moves relative to magnet case 71 to drive movable sheath 4.
In movable sheath 4, be also provided with drain hole 41, drain hole 41 is positioned at above boss 33, and liquid outlet opening 42 is positioned at below unloading hole 32.During level pressure overflow, unloading hole 32 is closed by movable sheath 4, and fluid enters valve opening 31 through damping hole 61, and after the pressure of fluid arrives certain value, fluid backs down pilot valve assembly 5, then flows out from drain hole 41.When off-load, calutron 7 is energized and drives movable sheath 4 to move up, and makes liquid outlet opening 42 relative with unloading hole 32, and fluid, after damping hole 61 and unloading hole 32, flows out from liquid outlet opening 42.
In the present embodiment, movable sheath 4 is metalwork, electromagnetic attraction is produced between magnet case 71 and movable sheath 4 after coil 72 is energized, Compress Spring 81 is provided with between movable sheath 4 and magnet case 71, after coil 72 is energized, magnet case 71 drives movable sheath 4 to move up, Compress Spring 81 compressive strain in this process, after coil 72 power-off, the restoring force of Compress Spring 81 drives Compress Spring 81 to move down.
Further, control valve also comprises inner sleeve 9, movable sheath 4 inner headed face is provided with the step 43 be positioned at above unloading hole 32, inner sleeve 9 is with movable sheath 4 interference fit and offset with step 43, inner sleeve 9 is provided with the intercommunicating pore 91 relative with liquid outlet opening 42, when off-load, in unloading hole 32, fluid enters liquid outlet opening 42 from intercommunicating pore 91.Inner sleeve 9 can also be flexible material, reduces the gap between boss 33 by inner sleeve 9, the sealing between strengthening two kinds.
Above-mentioned pilot valve assembly 5 comprises pilot valve 51 and damping piece 52, pilot valve 51 and damping piece 52 are installed in movable sheath 4, pilot valve 51 is for closed valve opening 31, and damping piece 52 is spring body, and the elastic force of spring body makes pilot valve 51 be pressed on the opening of valve opening 31.
And pilot valve assembly 5 also comprises adjusting screw rod 53, adjusting screw rod 53 is threaded magnet case 71, damping piece 52 is between adjusting screw rod 53 and pilot valve 51, can the elastic force of damping adjusting part 52 by adjusting screw rod 53, during level pressure overflow, fluid needs different pressure just can back down pilot valve 51.
Embodiment two:
With reference to figure 3, the difference of the present embodiment and embodiment one is, movable sheath 4 sets out fluid apertures 42, liquid outlet opening 42 is positioned at the top of boss 33, during level pressure overflow, unloading hole 32 is closed by movable sheath 4, after the pressure of fluid arrives certain value, fluid backs down pilot valve 51, then flows out from liquid outlet opening 42, main valve plug 6 just can be made to move up, valve body is opened.When off-load, calutron 7 is energized and drives movable sheath 4 to move down, and makes liquid outlet opening 42 relative with unloading hole 32, and fluid is after unloading hole 32, and flow out from liquid outlet opening 42, fluid can make main valve plug 6 move up, and is opened by valve body.
Wherein, movable sheath 4 is provided with magnetic part, produces electromagnetic repulsion force after coil electricity between magnet case and movable sheath 4, is provided with extension spring between movable sheath 4 and magnet case.After coil electricity, the magneto drive movable sheath 4 of magnet case moves down, liquid outlet opening 42 is communicated with unloading hole 32, and in this process, extension spring is stretched, after coil blackout, the restoring force of extension spring drives movable sheath 4 to move up, and unloading hole 32 is closed by the inner headed face of movable sheath 4.
Embodiment three:
With reference to figure 4, a kind of hydraulic control valve, comprise guide's valve pocket 12` and main valve housing 11`, guide's valve seat 3` is provided with in guide's valve pocket 11`, pilot valve assembly, main valve plug 4` is provided with in main valve housing 11`, main valve plug 4` is provided with damping hole 41`, guide's valve seat 3 is provided with valve opening 31`, wherein, pilot valve assembly comprises pilot valve 5`, slide block 6`, adjusting screw rod 8` and spring body 7`, the upper end linking springs body 7` of slide block 6`, the lower end of slide block 6` connects pilot valve 5`, the decrement of adjusting screw rod 8` Regulation spring body 7`, the elastic force effect of spring body 7` makes pilot valve 5` by valve opening 31` shutoff, hydraulic control valve also comprises calutron, calutron energising can drive slide block 6` to drive pilot valve 5` to move up and to be opened by valve opening 31`.During level pressure overflow, pilot valve 5` is by valve opening 31` shutoff, and fluid enters valve opening 31` through damping hole 41`, after the pressure of fluid arrives certain value, fluid just can back down pilot valve 5`, flow out from guide's valve pocket 12`, then main valve plug is mobile on 4`, and valve body is opened, after oil liquid pressure reduces, the elastic force of spring body 7` makes pilot valve 5` again by valve opening 31` shutoff, and pressure above main valve plug 4` strengthens, and the restoring force of Returnning spring 2` makes main valve plug 4` move down to be closed by valve body.When off-load, calutron energising drives slide block 6` to drive on pilot valve 5` and moves, and opened by the valve opening 31` originally closed, under any pressure, fluid can flow through valve opening 31`, and flow out from guide's valve pocket 12`, then main valve plug 4` moves up, and is opened by valve body.
Calutron comprises magnet case 91` and is sleeved on the coil 92` on magnet case 91`, magnet case 91` is slug, the other end that guide's valve pocket 12` is relative with main valve housing 11` connects magnet case 91`, coil 92` energising makes magnet case 91` lead to magnetic, move to drive on slide block 6`, after coil 92` power-off, the restoring force of spring body 7` makes slide block 6` move down, and pilot valve 5` is again by valve opening 31` shutoff.
The utility model is mainly used in the hydraulic system of the industries such as lathe, lubrication, braking, power unit.
By above-described embodiment, the purpose of this utility model is reached by fully effective.The personage being familiar with this technology should be understood that the content that the utility model includes but not limited to accompanying drawing and describes in embodiment above.Any amendment not departing from function and structure principle of the present utility model all will comprise within the scope of the appended claims.

Claims (10)

1. a hydraulic control valve, it is characterized in that: comprise guide's valve pocket and main valve housing, guide's valve seat, pilot valve assembly and movable sheath is provided with in described guide's valve pocket, main valve plug is provided with in described main valve housing, described guide's valve seat is provided with valve opening and unloading hole, described pilot valve assembly is used for valve opening described in shutoff, and described control valve also comprises calutron, and calutron energising drives movable sheath to move to open or close described unloading hole.
2. hydraulic control valve as claimed in claim 1, it is characterized in that: described guide's valve seat is provided with the boss extended towards movable sheath direction, the end face of described boss arranges described valve opening, the sidewall of described boss arranges described unloading hole and communicates with valve opening, described movable sheath is socketed described boss and is closed by unloading hole, the inner headed face of described movable sheath is provided with liquid outlet opening, and during calutron energising, movable sheath moves and liquid outlet opening is communicated with unloading hole.
3. hydraulic control valve as claimed in claim 2, is characterized in that: described calutron comprises magnet case and is sleeved on the coil on magnet case, and the other end that described guide's valve pocket is relative with main valve housing connects described magnet case.
4. hydraulic control valve as claimed in claim 3, it is characterized in that: be also provided with drain hole in described movable sheath, during described calutron power-off, described drain hole is positioned at above boss, and described liquid outlet opening is positioned at the below of described unloading hole.
5. hydraulic control valve as claimed in claim 4, is characterized in that: described movable sheath is metalwork, produces electromagnetic attraction after described coil electricity between magnet case and movable sheath, is provided with Compress Spring between described movable sheath and magnet case.
6. hydraulic control valve as claimed in claim 5, it is characterized in that: described control valve also comprises inner sleeve, described movable sheath inner headed face is provided with the step be positioned at above described unloading hole, described inner sleeve and movable sheath interference fit also offset with step, put and be provided with the intercommunicating pore relative with liquid outlet opening in described.
7. hydraulic control valve as claimed in claim 3, is characterized in that: described liquid outlet opening is positioned at above boss.
8. hydraulic control valve as claimed in claim 7, is characterized in that: described movable sheath is provided with magnetic part, produces electromagnetic repulsion force after described coil electricity between magnet case and movable sheath, be provided with extension spring between described movable sheath and magnet case.
9. the hydraulic control valve as described in one of claim 3 to 8, it is characterized in that: described pilot valve assembly comprises pilot valve, damping piece and adjusting screw rod, in described movable sheath, described pilot valve and damping piece are installed, described pilot valve is used for valve opening described in shutoff, described adjusting screw rod is threaded described magnet case, and described damping piece is between adjusting screw rod and pilot valve.
10. a hydraulic control valve, comprise guide's valve pocket and the main valve housing of docking, guide's valve seat is provided with in described guide's valve pocket, pilot valve assembly, main valve plug is provided with in described main valve housing, described guide's valve seat is provided with valve opening, it is characterized in that: described pilot valve assembly comprises pilot valve, slide block, adjusting screw rod and spring body, the two ends of described slide block arrange described pilot valve and spring body respectively, the decrement of described adjusting screw rod Regulation spring body, the elastic force effect of described spring body makes pilot valve by valve opening shutoff, described hydraulic control valve also comprises calutron, described calutron energising can drive slide block to drive pilot valve to move and be opened by valve opening.
CN201520769006.5U 2015-09-29 2015-09-29 Hydraulic control valve CN205047559U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106051210A (en) * 2016-07-15 2016-10-26 蚌埠方正气体设备有限公司 Electromagnetic two-position three-way phase changing valve with wide pressure range
CN106640811A (en) * 2016-11-24 2017-05-10 浙江华益精密机械股份有限公司 Leak-tight pressure compensation electric proportional throttle valve
CN106762910A (en) * 2016-12-30 2017-05-31 宁波华液机器制造有限公司 A kind of modified logical valve
CN107725840A (en) * 2017-11-08 2018-02-23 宁波文泽机电技术开发有限公司 The proportional flow stop valve of double-direction control

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106051210A (en) * 2016-07-15 2016-10-26 蚌埠方正气体设备有限公司 Electromagnetic two-position three-way phase changing valve with wide pressure range
CN106051210B (en) * 2016-07-15 2018-11-23 蚌埠方正气体设备有限公司 A kind of two position, three-way electromagnetic change valve for wide pressure limit
CN106640811A (en) * 2016-11-24 2017-05-10 浙江华益精密机械股份有限公司 Leak-tight pressure compensation electric proportional throttle valve
CN106762910A (en) * 2016-12-30 2017-05-31 宁波华液机器制造有限公司 A kind of modified logical valve
CN106762910B (en) * 2016-12-30 2018-11-13 宁波华液机器制造有限公司 A kind of modified logical valve
CN107725840A (en) * 2017-11-08 2018-02-23 宁波文泽机电技术开发有限公司 The proportional flow stop valve of double-direction control

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