CN102865387B - Electric proportional multi-way valve - Google Patents
Electric proportional multi-way valve Download PDFInfo
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- CN102865387B CN102865387B CN201210374104.XA CN201210374104A CN102865387B CN 102865387 B CN102865387 B CN 102865387B CN 201210374104 A CN201210374104 A CN 201210374104A CN 102865387 B CN102865387 B CN 102865387B
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Abstract
The invention discloses an electric proportional multi-way valve which comprises a valve body (1). Main valve holes (3) are provided with main spools (4), electric proportional reducing valve components are connected to two edges of the valve body (1), each electric proportional reducing valve component comprises a shell (5), an electromagnet (6), a reducing valve housing (7) and a reducing valve spool (8), a mandrel of each electromagnet (6) is abutted onto the each reducing valve spool (8), one end, which is connected with the valve body (1), of each shell (5) is provided with a cavity (10), the ends of the main spools (4) are located in the cavities (10), and the valve body (1) is further provided with a pressure compensation spool (14). The electric proportional multi-way valve has the advantages that hydraulic control is changed into electric proportional control by changing a control manner of the multi-way valve, pressure compensation is enhanced, and accordingly mounting pipelines of the multi-way valve are reduced, occupied space is small, cost is low, mounting and maintenance are convenient and intelligent control can be achieved.
Description
Technical field
The present invention relates to hydrovalve technical field, particularly a kind of automatically controlled proportional multi-way valve.
Background technique
The combination brake switch and proporting that multi-way valve is is main body by plural selector valve, generally comprise oil-feed valve body, two or more commutation valve bodies, tail connection valve body, according to the requirement of different hydraulic systems, often the valve classes such as main safety valve, one-way valve, overload valve, Fill valve, diverter valve, brake valve are combined.Therefore, multi-way valve has compact structure, pipeline is simple, the pressure loss is little and the advantage such as simple installation, in engineering machinery, use more and more extensive, as excavator, loader, hoist etc.
But existing liquor controlled multipath exists not with pressure compensation, use pipeline is too many, the shortcoming large, cost is high, installation and maintenance are inconvenient takes up room.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, provide a kind of and increase pressure compensation, take up room little, cost is low, convenient for installation and maintenance, the automatically controlled proportional multi-way valve that can realize intelligent control.
Object of the present invention is achieved through the following technical solutions: a kind of automatically controlled proportional multi-way valve, it comprises valve body, on valve body, be connected with overflow/cavitation-preventive valve, in valve body, be provided with main valve hole, in main valve hole, be provided with main valve plug, main valve hole is communicated with filler opening and oil outlet, on valve body, be also provided with hydraulic fluid port A and hydraulic fluid port B that Liang Geyu actuator connects, the both sides of valve body are connected with automatically controlled proportional pressure-reducing valve assembly, automatically controlled proportional pressure-reducing valve assembly comprises housing, electromagnet, reduction valve valve pocket and reduction valve spool, reduction valve spool is arranged in reduction valve valve pocket, electromagnet is installed on the end of reduction valve valve pocket, and the plug of electromagnet presses on reduction valve spool, the end of reduction valve spool is provided with flange, the outer cover of reduction valve spool is provided with reduction valve valve core spring, reduction valve valve core spring one end presses on the flange of reduction valve spool, the other end of reduction valve valve core spring presses on the inwall of reduction valve valve pocket, one end of housing is provided with reduction valve mounting hole, reduction valve valve pocket is installed in reduction valve mounting hole, the other end of housing is fixedly connected with valve body, and one end that housing connects valve body is provided with cavity, the end of main valve plug exceeds valve body and is positioned at the cavity of housing, the end of main valve plug is set with spring seat, on spring seat, be set with main valve plug spring, main valve plug spring one end presses on spring seat, the other end of main valve plug spring presses on the end face of shell cavity, the reduction valve mounting hole of housing is communicated with cavity, in valve body, be also provided with pressure compensation valve opening, be provided with pressure compensation spool in pressure compensation valve opening, the end of pressure compensation valve opening is provided with screw plug.
Described reduction valve spool is provided with connection runner, and Pressure relief valve seat is provided with controls oily filler opening.
Between described Pressure relief valve seat and shell end, be provided with O RunddichtringO A.
Between described Pressure relief valve seat and housing, be positioned at front side and the rear side of controlling oily filler opening and be respectively equipped with O RunddichtringO B and O RunddichtringO C.
Between described screw plug and valve body, be provided with O RunddichtringO D.
The present invention has the following advantages: the present invention is by the change to multi-way valve control mode, by hydraulic control, change electric proportional control into, increase pressure compensation, make multi-way valve installation pipeline reduce, take up room little, cost is low, convenient for installation and maintenance, can realize intelligent control.
Compare with existing multi-way valve:
(1) existing multi-way valve does not have pressure compensation, and when a plurality of actuators move simultaneously, according to hydraulic work principle, the little actuator's flow of load is large, and speed is fast; Actuator's flow that load is large is few, and speed is slow.And the novel multi-way valve of this reality has increased pressure compensation, guarantee that each plate valve throttling front and back pressure difference all equates, flow is only relevant with the opening area of spool, by the flow between demand assignment reversing valve connecting, irrelevant with pressure and flow.
(2) existing liquor controlled multipath complex structure, pipeline is more, and space hold is large, and inconvenience is installed, and cost is high.And electric control multi-way valve of the present invention has been avoided problem above, simple in structure, space hold is little, easy for installation, and cost is low.
(3) integral multitandem valve complex structure, Design of Dies difficulty is large, and cost is high, processing, installation and maintenance inconvenience, and chip multi-way valve of the present invention has successfully solved the problems referred to above, simple in structure, Design of Dies is simple, and cost is low, and processing, installation and maintenance are conveniently.
The present invention changes commutation valve body two ends control structure, increase reduction valve and proportion electro-magnet, outside control oil (3.5～4.5MPa) is introduced and controlled oily filler opening, by the size of control inputs electric current, change the position of reduction valve spool, thereby change the opening of reduction valve spool, change input main valve plug two ends and control oily size, the final opening area that changes main valve plug, the size of change flow.And the present invention has increased pressure compensation, before and after guaranteeing each plate valve throttling, pressure difference all equates, flow is only relevant with the opening area of spool, by the flow between demand assignment reversing valve connecting, irrelevant with pressure and flow, reliable performance, with low cost, installation and easy to maintenance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation of automatically controlled proportional pressure-reducing valve assembly of the present invention
In figure, 1-valve body, 2-overflow/cavitation-preventive valve, 3-main valve hole, 4-main valve plug, 5-housing, 6-electromagnet, 7-reduction valve valve pocket, 8-reduction valve spool, 9-reduction valve valve core spring, 10-cavity, 11-spring seat, 12-main valve plug spring, 13-pressure compensation valve opening, 14-pressure compensation spool, 15-screw plug, 16-is communicated with runner, and 17-controls oily filler opening, 18-O RunddichtringO A, 19-O RunddichtringO B, 20-O RunddichtringO C, 21-O RunddichtringO D, 22-hydraulic fluid port A, 23-hydraulic fluid port B, the space between Ak-housing and main valve plug.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described, and protection scope of the present invention is not limited to the following stated:
As shown in Figure 1, a kind of automatically controlled proportional multi-way valve, it comprises valve body 1, on valve body 1, be connected with overflow/cavitation-preventive valve 2, overflow/cavitation-preventive valve 2 is threaded connection with valve body 1, and between the two, adopt O type circle conical surface seal, in valve body 1, be provided with main valve hole 3, in main valve hole 3, be provided with main valve plug 4, valve body 1 and main valve plug 4 Spielpassung, main valve hole 3 is communicated with oil inlet P and the oil outlet T of hydraulic oil, on valve body 1, be also provided with hydraulic fluid port A22 and hydraulic fluid port B23 that Liang Geyu actuator connects, the both sides of valve body 1 are connected with automatically controlled proportional pressure-reducing valve assembly, as Fig. 1, shown in Fig. 2, automatically controlled proportional pressure-reducing valve assembly comprises housing 5, electromagnet 6, reduction valve valve pocket 7 and reduction valve spool 8, reduction valve spool 8 is arranged in reduction valve valve pocket 7, reduction valve spool 8 and reduction valve valve pocket 7 Spielpassung, electromagnet 6 is installed on the end of reduction valve valve pocket 7, electromagnet 6 is threaded connection with reduction valve valve pocket 7, and the plug of electromagnet 6 presses on reduction valve spool 8, the end of reduction valve spool 8 is provided with flange, the outer cover of reduction valve spool 8 is provided with reduction valve valve core spring 9, reduction valve valve core spring 9 one end press on the flange of reduction valve spool 8, the other end of reduction valve valve core spring 9 presses on the inwall of reduction valve valve pocket 7, one end of housing 5 is provided with reduction valve mounting hole, reduction valve valve pocket 7 is installed in reduction valve mounting hole, reduction valve valve pocket 7 is fixed by four screws with housing 5, reduction valve valve pocket 7 and housing 5 Spielpassung, the other end of housing 5 is fixedly connected with valve body 1, housing 5 is fixed on valve body 1 by four screws, and one end that housing 5 connects valve body 1 is provided with cavity 10, the end of main valve plug 4 exceeds valve body 1 and is positioned at the cavity 10 of housing 5, the end of main valve plug 4 is set with spring seat 11, on spring seat 11, be set with main valve plug spring 12, main valve plug spring 12 one end press on spring seat 11, the other end of main valve plug spring 12 presses on the end face of housing 5 cavitys 10, and the reduction valve mounting hole of housing 5 is communicated with cavity 10, in valve body 1, be also provided with pressure compensation valve opening 13, in pressure compensation valve opening 13, be provided with pressure compensation spool 14, valve body 1 and pressure compensation spool 14 Spielpassung, the end of pressure compensation valve opening 13 is provided with screw plug 15.Pressure compensation valve opening 13 one end are communicated with main valve hole 3 by oil duct P1, the other end of pressure compensation valve opening 13 is provided with screw plug 15, valve body 1 is threaded connection with screw plug 15, hydraulic fluid port A22 is all communicated with main valve hole 3 with hydraulic fluid port B23, and hydraulic fluid port A22 and hydraulic fluid port B23 are also communicated with pressure compensation valve opening 13 by oil duct P2 respectively.
Described reduction valve spool 8 is provided with and is communicated with runner 16, and Pressure relief valve seat is provided with controls oily filler opening 17.
Between described Pressure relief valve seat and housing 5 ends, be provided with O RunddichtringO A18.
Between described Pressure relief valve seat and housing 5, be positioned at front side and the rear side of controlling oily filler opening 17 and be respectively equipped with O RunddichtringO B19 and O RunddichtringO C20.
Between described screw plug 15 and valve body 1, be provided with O RunddichtringO D21.
Working procedure of the present invention is as follows: as shown in Figure 1, after electromagnet 6 energisings of left end, the plug of electromagnet 6 promotes proportional pressure-reducing valve spool 8 and moves right, control the space Ak that oily filler opening 17 is connected between housing 5 and main valve plug 4 by being communicated with runner 16, control oil and flow to space Ak from controlling oily filler opening 17, promoting main valve plug 4 moves right, hydraulic oil flows to runner P1 from oil inlet P, push pressure compensation spool 14 open, flow to runner P2, and be that actuator port flows out by hydraulic fluid port A22, the hydraulic oil of returning from actuator flows to oil outlet T from hydraulic fluid port B23, flow back to fuel tank, otherwise after electromagnet 6 energisings on the right, the plug of electromagnet 6 promotes proportional pressure-reducing valve spool 8 and is moved to the left, control the space Ak that oily filler opening 17 is connected between housing 5 and main valve plug 4 by being communicated with runner 16, control oil and flow to space Ak from controlling oily filler opening 17, promoting main valve plug 4 is moved to the left, hydraulic oil flows to runner P1 from oil inlet P, push pressure compensation spool 145 open, flow to runner P2, and be that actuator port flows out by hydraulic fluid port B23, the hydraulic oil of returning from actuator flows to oil outlet T from hydraulic fluid port A22, flows back to fuel tank.
Claims (5)
1. an automatically controlled proportional multi-way valve, it comprises valve body (1), on valve body (1), be connected with overflow/cavitation-preventive valve (2), in valve body (1), be provided with main valve hole (3), in main valve hole (3), be provided with main valve plug (4), main valve hole (3) is communicated with filler opening and oil outlet, on valve body (1), be also provided with the hydraulic fluid port A(22 that Liang Geyu actuator connects) and hydraulic fluid port B(23), it is characterized in that: the both sides of valve body (1) are connected with automatically controlled proportional pressure-reducing valve assembly, automatically controlled proportional pressure-reducing valve assembly comprises housing (5), electromagnet (6), reduction valve valve pocket (7) and reduction valve spool (8), reduction valve spool (8) is arranged in reduction valve valve pocket (7), electromagnet (6) is installed on the end of reduction valve valve pocket (7), and the plug of electromagnet (6) presses on reduction valve spool (8), the end of reduction valve spool (8) is provided with flange, the outer cover of reduction valve spool (8) is provided with reduction valve valve core spring (9), reduction valve valve core spring (9) one end presses on the flange of reduction valve spool (8), the other end of reduction valve valve core spring (9) presses on the inwall of reduction valve valve pocket (7), one end of housing (5) is provided with reduction valve mounting hole, reduction valve valve pocket (7) is installed in reduction valve mounting hole, the other end of housing (5) is fixedly connected with valve body (1), and one end that housing (5) connects valve body (1) is provided with cavity (10), the end of main valve plug (4) exceeds valve body (1) and is positioned at the cavity (10) of housing (5), the end of main valve plug (4) is set with spring seat (11), on spring seat (11), be set with main valve plug spring (12), main valve plug spring (12) one end presses on spring seat (11), the other end of main valve plug spring (12) presses on the end face of housing (5) cavity (10), the reduction valve mounting hole of housing (5) is communicated with cavity (10), in valve body (1), be also provided with pressure compensation valve opening (13), be provided with pressure compensation spool (14) in pressure compensation valve opening (13), the end of pressure compensation valve opening (13) is provided with screw plug (15).
2. a kind of automatically controlled proportional multi-way valve according to claim 1, is characterized in that: described reduction valve spool (8) is provided with and is communicated with runner (16), and Pressure relief valve seat is provided with controls oily filler opening (17).
3. a kind of automatically controlled proportional multi-way valve according to claim 2, is characterized in that: described Pressure relief valve seat and housing (5) are provided with O RunddichtringO A(18 between end).
4. a kind of automatically controlled proportional multi-way valve according to claim 2, is characterized in that: between described Pressure relief valve seat and housing (5), be positioned at front side and the rear side of controlling oily filler opening (17) and be respectively equipped with O RunddichtringO B(19) and O RunddichtringO C(20).
5. a kind of automatically controlled proportional multi-way valve according to claim 1, is characterized in that: between described screw plug (15) and valve body (1), be provided with O RunddichtringO D(21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210374104.XA CN102865387B (en) | 2012-10-07 | 2012-10-07 | Electric proportional multi-way valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210374104.XA CN102865387B (en) | 2012-10-07 | 2012-10-07 | Electric proportional multi-way valve |
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| Publication Number | Publication Date |
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| CN102865387A CN102865387A (en) | 2013-01-09 |
| CN102865387B true CN102865387B (en) | 2014-02-26 |
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| CN201210374104.XA Active CN102865387B (en) | 2012-10-07 | 2012-10-07 | Electric proportional multi-way valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043390A (en) * | 2019-04-28 | 2019-07-23 | 贵州曼格维流体智能科技有限公司 | A kind of satellite bipropellant parallel connection tank equilibrium discharge synchronous valve and its application |
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| CN106224618A (en) * | 2016-08-30 | 2016-12-14 | 宁波星宇国均汽车电磁阀有限公司 | A kind of automatic gear-box Clutch Control proportional solenoid |
| CN108253158B (en) * | 2016-12-28 | 2019-11-08 | 比亚迪股份有限公司 | Flow control valve and fork truck with it |
| CN108361234B (en) * | 2018-02-10 | 2020-04-07 | 宁波市博尔法液压有限公司 | Multi-way valve device with intelligent flow control function |
| CN108518370B (en) * | 2018-05-02 | 2019-11-26 | 宁波真格液压科技有限公司 | A kind of electromagnetic proportional valve of flow saturation resistance |
| CN111442128B (en) * | 2019-01-16 | 2024-05-24 | 上海气立可气动设备有限公司 | Electric control large-capacity proportional valve |
| CN113007165A (en) * | 2021-03-22 | 2021-06-22 | 上海诺玛液压系统有限公司 | CAN bus proportional multi-way valve |
| CN116181727B (en) * | 2023-02-23 | 2024-08-13 | 湖州生力液压有限公司 | Energy-saving type electric control multi-way valve with proportion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110043390A (en) * | 2019-04-28 | 2019-07-23 | 贵州曼格维流体智能科技有限公司 | A kind of satellite bipropellant parallel connection tank equilibrium discharge synchronous valve and its application |
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| CN102865387A (en) | 2013-01-09 |
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