CN201090549Y - Bipolar electrohydraulic lead outflow valve - Google Patents
Bipolar electrohydraulic lead outflow valve Download PDFInfo
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- CN201090549Y CN201090549Y CNU2007201765542U CN200720176554U CN201090549Y CN 201090549 Y CN201090549 Y CN 201090549Y CN U2007201765542 U CNU2007201765542 U CN U2007201765542U CN 200720176554 U CN200720176554 U CN 200720176554U CN 201090549 Y CN201090549 Y CN 201090549Y
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Abstract
The utility model relates to a bipolar electro-hydraulic pilot spillover valve. The utility model comprises a main valve, two or three electromagnetic pilot valve in threaded connection, a first pressure pilot valve and a pressure second pilot valve; wherein the main valve is composed of a main valve body and a main valve spool component; the electromagnetic pilot valve part is composed of a valve body, a valve spool, a pressure spring, a gasket and one or two electromagnets; the first pressure pilot valve is composed of a pilot valve body, a pilot valve seat, a pilot valve spool, a damper, a pressure spring and a regulator; the second pilot valve is also composed of a pilot valve body, a pilot valve seat, a pilot valve spool, a damper, a pressure spring and a regulator. The first pressure pilot valve is fixed on the main valve by four bolts; the electromagnetic pilot valves and the second pressure pilot valve are vertically superposed on the first pressure pilot valve. The utility model can control the operation of the first and the second pressure pilot valves by the electromagnetic pilot valves, and then control the system pressure and achieves the multistage changes under different pressures.
Description
Technical field
The utility model relates to the precursor overflow valve that a kind of pressure control is used, and particularly relates to a kind of the two poles of the earth electricity liquid precursor overflow valve.
Background technique
Multipole electric liquid precursor overflow valve commonly used in the prior art is the multipole electric liquid precursor overflow valve of DB3U10-30...30B/, is the multistage relief valve of two joint concentric types controlled of guide (secondary or three grades), and main valve and pilot valve are the cone valve type structure.Be used for the pressure of control system, realize that by the pressure that solenoid pilot valve can control system two-stage changes or multistage variation.Fig. 6,7 is respectively the cross-sectional view according to three extremely electric liquid precursor overflow valves of prior art.Shown in Fig. 6,7, three grades of electric liquid precursor overflow valves of DB3U10-30...30B/ comprise the first pressure pilot valve 60, the second pressure pilot valve 70, the 3rd pressure pilot valve 80 and the 5 latus rectum solenoid pilot valves 90 of main valve 50, three 30 serial pilot valves.Wherein, three 30 serial pilot valves are three pressure pilot valves, and the first pressure pilot valve 60 is that leading type, the second pressure pilot valve 70, the 3rd pressure pilot valve 80 are direct-acting type; Main valve is the cone valve type structure.The second pressure pilot valve 70, the 3rd pressure pilot valve 80 laterally are connected to 5 latus rectum solenoid pilot valves, 90 both sides (as shown in Figure 7) by four screws, the solenoid pilot valve 90 that has the two poles of the earth pressure pilot valve is superimposed upon on the first pressure pilot valve 60 by four screws, and the first pressure pilot valve 60 passes through four screw on main valve 50.From the various piece Placement of entire product, three pressure pilot valves laterally superpose, and when it is used for the two-stage pressure-regulating use, has a pilot valve idle, but can not reduce on structure.
As described below according to three grades of electric its working principles of liquid precursor overflow valve that said structure is formed:
When solenoid pilot valve 90 is in meta, the outage of the electromagnet at its two ends, the A1 cavity pressure is by 60 controls of the first pressure pilot valve.When A1 cavity pressure oil acts on spool 53 lower ends of main valve 50, act on the poppet spool valve 63 of valve core of main valve 53 upper ends and the first pressure pilot valve 60 by damping hole 501 and passage 502,602.When pressure that system pressure Overpressure of a safety valve spring 64 is set up, poppet spool valve 63 is opened, and the oil above the valve core of main valve 53 flows back to fuel tank (row in the control oil) or flows back to fuel tank (control oil effluxes) by effluxing mouth through damper 601, passage 602, spring chamber 604 and passage 503 simultaneously.Like this, pressure oil produces a pressure reduction up and down at valve core of main valve 53, and valve core of main valve 53 is opened under the effect of this pressure reduction, flows to the B1 chamber at set pressure downforce oil from the A1 chamber, thereby keeps set pressure constant.
When the energising of electromagnet a1 end, the A1 cavity pressure is by 70 controls of the second pressure pilot valve; When the energising of electromagnet b1 end, the A1 cavity pressure is by 60 controls of the first pressure pilot valve; Wherein, the electromagnet of solenoid pilot valve 90 is connected with valve body 91 by four socket head screws, in long-term using process, because vibrations easily make screw loosening and the generation leakage of oil.And solenoid pilot valve 90 is 5 latus rectums, its peak rate of flow 14L/min; The maximum service pressure that A1, B1, P chamber allow is 25Mpa; The maximum service pressure that the T chamber allows is 6Mpa.Therefore, the peak rate of flow that can pass through of product is 600L/min.
Wherein, the valve seat 62 usefulness cold settings of the first pressure pilot valve 60 or the mode of the interference fit pilot valve body 61 of packing into, this cold setting fit is difficult for realizing, and cost is higher, the size of the strict control part of the mode of interference fit, and can't reuse, if valve seat 62 has problem, then need valve body 61 and valve seat 62 are changed simultaneously, cause waste.The spool 63 of the first pressure pilot valve 60 is a taper valve core, with the oil sealing mode in valve seat 62 apertures be the crest line oil sealing, taper valve core form and position tolerance and hardness are had relatively high expectations complex process.Spool 63 seals with the annular wire that is sealed into of valve seat 62, in practical work process, spool 63 impacts mutually with valve seat 62, the crest line of valve seat 62 resembles a sharp knife for the conical surface of taper valve core 63, under the situation of impacting mutually repeatedly, just destroy the conical surface of cone valve easily, form dark groove mark, thereby influence the pilot valve sealing, the life-span of product is reduced.
Wherein, the valve seat 72 usefulness cold settings of the second pressure pilot valve 70 or the mode of the interference fit pilot valve body 71 of packing into, this cold setting fit is difficult for realizing, and cost is higher.The size of the strict control part of the mode of interference fit, and can't reuse, if valve seat 72 has problem, then need valve body 71 and valve seat 72 are changed simultaneously, cause waste.Taper valve core 73 is the T type, cooperates the valve seat 72 of packing into by certain clearance, for the having relatively high expectations of dimensional accuracy and form and position tolerance, brings certain difficulty to processing like this.
The structure of the structure of the 3rd pressure pilot valve 80 and the second pressure pilot valve 70 exists above-mentioned same problem.
Wherein, the endoporus of the main valve housing 52 of main valve 50 is 22, the oil through 504 of 4 15 that radially evenly distributed; Main valve plug 53 cylindricals are 0.8 * 70 ° with the cone angle that the control limit joins, and guarantee its circularity and coaxality, the processes difficulty; Flow area is less relatively.
Because above-mentioned existing three grades of defectives that electric liquid precursor overflow valve exists, the design people is based on being engaged in this type of product specification manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of the two poles of the earth electricity liquid precursor overflow valve of new structure, can improve general existing three grades of electric liquid precursor overflow valves, make it have more practicability.Through constantly research, design, and, create the utility model that has practical value finally through after studying sample and improvement repeatedly.
Summary of the invention
Main purpose of the present utility model is, overcome existing three grades of defectives that electric liquid precursor overflow valve exists, and the electric liquid precursor overflow valve in the two poles of the earth that a kind of new structure is provided, technical problem to be solved is that its structure is optimized, and reduces the part processing difficulty, has more kinds of pressure ratings, through-current capability is strong, increase the working life of product, reduces product cost, thereby be suitable for practicality more.
The purpose of this utility model and to solve its technical problem be to adopt following technological scheme to realize.A kind of the two poles of the earth electricity liquid precursor overflow valve according to the utility model proposes comprises: main valve; The first pressure pilot valve is fixed on the main valve; Solenoid pilot valve, be superimposed with the second pressure pilot valve after, be fixed in the lump on the first pressure pilot valve; Wherein, described solenoid pilot valve, the second pressure pilot valve, the first pressure pilot valve and main valve are that vertical from top to bottom stack connects as one.
The purpose of this utility model and solve its technical problem and can also be able to be further achieved by the following technical measures.
Aforesaid the two poles of the earth electricity liquid precursor overflow valve, wherein said main valve comprises the main valve plug assembly of main valve body and portion's installation within it, described main valve plug assembly further comprises: main valve housing, main valve plug, spring seat, pressure spring, seal ring and damper; Main valve plug is housed in the main valve housing, spring seat is housed in the main valve plug, spring seat overcoat pressure spring, damper are arranged in the damping hole of main valve body; Wherein, be provided with different oil throughs in the described main valve body, the main valve housing radially direct 8 oil throughs, be conical surface seal between itself and the main valve plug.
Aforesaid the two poles of the earth electricity liquid precursor overflow valve, wherein said solenoid pilot valve comprises valve body, spool, pressure spring, pad, one or two electromagnet; Be provided with spool in the valve body, pad is contained in the valve body two ends and is used for the abutment pressure spring; Pressure spring one end connects pad and is arranged in the concentrating flux sleeve of electromagnet; Wherein, described two ends of valve body is provided with conical surface, forms conical surface seal with electromagnet, and electromagnet and valve body are for being threaded.
Aforesaid the two poles of the earth electricity liquid precursor overflow valve, the wherein said first pressure pilot valve comprises: pilot valve body, guide valve seat, damper, be contained in guide valve core on the pressure spring, be contained in pressure spring on the spring seat, be contained in spring seat, controlling mechanism and pad, sealing gasket and screw plug in the controlling mechanism; Guide valve seat is loaded onto damper, seal ring and back-up ring and is screwed into the pilot valve body threadably from pilot valve body left hole, and blocks pilot valve body left hole with screw plug and sealing gasket; Pack into spring seat, pressure spring, guide valve core of controlling mechanism together is screwed into the pilot valve body from pilot valve body right ports; And with the jump ring pilot valve body of packing into, with the position of restriction controlling mechanism.
Aforesaid the two poles of the earth electricity liquid precursor overflow valve, the wherein said second pressure pilot valve comprises: pilot valve body, guide valve seat, damper, be contained in guide valve core on the pressure spring, be contained in pressure spring on the spring seat, be contained in spring seat, controlling mechanism and pad, sealing gasket and screw plug in the controlling mechanism; Guide valve seat is loaded onto damper, seal ring and back-up ring and is screwed into the pilot valve body threadably from pilot valve body left hole, and blocks pilot valve body left hole with screw plug and sealing gasket; Pack into spring seat, pressure spring, guide valve core of controlling mechanism together is screwed into the pilot valve body from pilot valve body right ports; And with the jump ring pilot valve body of packing into, with the position of restriction controlling mechanism.
By technique scheme, the utility model the two poles of the earth electricity liquid precursor overflow valve has following advantage at least:
1) because the design of existing multistage relief valve lacks limit, in the two-stage pressure-regulating system, still need three pressure regulation pilot valves, increased user's user cost, the utility model then vertically superposes by two pressure regulation pilot valves, has well solved the problems referred to above.Two stage pressure pilot valves by change main valve plug design size, thereby make newly-designed valve through-current capability strong by vertically being superimposed upon on the main valve.Solenoid pilot valve, the second pressure pilot valve, the first pressure pilot valve, main valve vertically superpose from top to bottom and link together, thereby save horizontal space.
2) solenoid pilot valve adopts the six latus rectums form that is threaded, and peak rate of flow is 35Mpa to the maximum service pressure that 80L/min, A2, B2, P chamber allow; The maximum service pressure that the T chamber allows is 16Mpa.Be connected solenoid pilot valve with 5 latus rectum screws in the original structure and compare, increased through-current capability, installation and maintenance conveniently.
3) solenoid pilot valve adopts the six latus rectums form that is threaded, and the connection of electromagnet is to be connected with valve body by screw thread, and seal form changes conical surface seal into, the advantage of this kind sealing is, in long-term using process, under vibrations, be difficult for loosening so better tightness, be difficult for producing leakage of oil.
4) valve body of the first pressure pilot valve, second pressure pilot valve redesign, the general existing 50 serial electromagnetic relief valve parts of its inner pressure regulation part, highly versatile, and the more kinds of pressure rating of tool.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 (a) is the main sight plane schematic representation of the two poles of the earth of the present utility model electricity liquid precursor overflow valve.
Fig. 1 (b) is the schematic top plan view of the two poles of the earth of the present utility model electricity liquid precursor overflow valve.
Fig. 2 is the cross-sectional view of the two poles of the earth of the present utility model electricity liquid precursor overflow valve.
Fig. 3 is another embodiment's of a solenoid pilot valve of the present utility model structural representation.
Fig. 4 is the partial schematic sectional view of solenoid pilot valve of the present utility model.
Fig. 5 is the partial structurtes schematic representation of main valve of the present utility model.
Fig. 6 is the cross-sectional view of three extremely electric liquid precursor overflow valves of prior art.
Fig. 7 is the cross-sectional view of three extremely electric liquid precursor overflow valves of prior art.
10,50: main valve
501,112: damping hole
122: main valve housing
123: main valve plug
124: spring seat
125: pressure spring
126,601,301,201,202: damper
103,504: oil through
127: balancing slit
20,60: the first pressure pilot valves
21,31,41,51,61,71: valve body
52: valve pocket
23,33,43,53,63,73: spool
24,34,44,54,64: pressure spring
25,35,55,65: spring seat
22,32,62,72: guide valve seat
26,36,46: controlling mechanism
502,602: passage
604: spring chamber
30,70: the second pressure pilot valves
80: the three pressure pilot valves
40,90: solenoid pilot valve
403: screw
27,37,404: screw plug
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to the two poles of the earth that the utility model proposes its embodiment of electricity liquid precursor overflow valve, structure, feature and effect thereof, describe in detail as after.
See also shown in Fig. 1 (a), 1 (b), Fig. 1 (a), 1 (b) are respectively that the master of the two poles of the earth of the present utility model electricity liquid precursor overflow valve looks, schematic top plan view.The two poles of the earth of the present utility model electricity liquid precursor overflow valve comprises the first pressure pilot valve 20, the second pressure pilot valve 30 and the 6 latus rectum solenoid pilot valves 40 of main valve 10, two 50 serial pilot valves.Wherein, four screw of the first pressure pilot valve, 20 usefulness are on main valve 10, and the second pressure pilot valve 30 is fixed on the first pressure pilot valve 20 with four screws 403 after being superimposed with solenoid pilot valve 40 then.Vertical from top to bottom stack links together with main valve 10 for solenoid pilot valve 40, the second pressure pilot valve 30, the first pressure pilot valve 20.
See also shown in Figure 2ly, Fig. 2 is the cross-sectional view of the two poles of the earth of the present utility model electricity liquid precursor overflow valve.Wherein, described main valve 10 is formed by main valve plug assembly 12 is housed in main valve body 11 and the main valve body.Main valve body 11 comprises damping hole 112, outside control mouth X, oil duct A2, B2, interior oil drainage hole Y.Main valve plug assembly 12 comprises main valve housing 122, and main valve plug 123, spring seat 124, pressure spring 125 are housed in it, and seal ring 129 is screwed into damper 126 main valve body damping hole 112 again and forms main valve plug assembly 12.
Wherein, with reference to shown in Figure 5, the excircle dimension of main valve plug 123 designs is than the big 2mm of existing spool, thereby makes newly-designed valve through-current capability strong.The main valve endoporus is 24, the oil through 103 of 8 8 that radially evenly distributed.The peak rate of flow of main valve 10 can arrive 650L/min.Main valve plug 123 front ends are the plane, good manufacturability, also improved the force-bearing situation of spool, further improved pressure regulation stability, main valve plug 123 cylindricals have 4 balancing slits 127 that 1mm is wide, because therefore balancing slit 127 broads clean deburring conveniently, water environment capacity is strong, has reduced the probability of main valve plug 123 chuckings.Oil sealing length between main valve plug 123 and the main valve housing 122 is longer, reduced internal leakage, also increased the guiding length of main valve plug 123, thereby improved pressure regulation stability simultaneously, pressure spring 125 diameters of main valve plug 123 increase and main valve plug 123 end faces keep wedge angle, and the stability of main valve 10 has been improved.
6 latus rectum solenoid pilot valves, 40 parts of the two poles of the earth of the present utility model electricity liquid precursor overflow valve mainly comprise: valve body 41, spool 43, pressure spring 44, pad 45, electromagnet a2, b2.In another embodiment of the present utility model, 6 latus rectum solenoid pilot valves 40 include an electromagnet a2, and its other end can be a screw plug 404 (as shown in Figure 3).Wherein, spool 43 is by certain matching gap valve body 41 of packing into; Pad 45 is contained in valve body 41 two ends and is used for abutment pressure spring 44; Pressure spring 44 be placed on the valve body pad 45 with electromagnet concentrating flux sleeve 401,402 in; The screw thread of electromagnet concentrating flux sleeve 401,402 directly screws with the screw thread of valve body 41 and is connected, and change conical surface seal 405 into by existing right angle sealing 901 between electromagnet and the valve body, the advantage of this kind sealing is, in long-term using process, under vibrations, be difficult for loosening and generation leakage of oil (as shown in Figure 4).
The first pressure pilot valve 20 of the two poles of the earth of the present utility model electricity liquid precursor overflow valve mainly comprises: pilot valve body 21, guide valve seat 22, guide valve core 23, damper 201, damper 202, pressure spring 24, spring seat 25, controlling mechanism 26.Damper 202 is screwed into the damping hole of pilot valve body 21, is used to limit the epicoele flow of main valve 10, to form 10 actions of pressure reduction control main valve; Guide valve seat 22 loads onto damper 201 and corresponding seal ring 203 is screwed into pilot valve body 21 from pilot valve body left hole, and with screw plug 27 pilot valve body left hole is blocked; Spring seat 25 is contained in the controlling mechanism 26, is used for abutment pressure spring 24; Pressure spring 24 is contained on the spring seat 25, is used for initialization system pressure; Guide valve core 23 is contained on the pressure spring 24; Pack into spring seat 25, pressure spring 24, guide valve core 23 of controlling mechanism 26 together is screwed into pilot valve body 21 from pilot valve body right ports; And with the jump ring 28 pilot valve body 21 of packing into, with the position of restriction controlling mechanism 26.
Wherein, the guide valve seat 22 of the first pressure pilot valve 20 is to adopt screw thread to be screwed into mode, and guide valve seat 22 oil-through holes can be worked into reduced size, and by designing the pressure spring 24 of different size, thereby have 50,100,200,315,350 5 kind of pressure rating, the pressure height.Guide valve core 23 adopts standard steel ball embedding pressure type structure, with the oil sealing mode in guide valve seat 22 apertures be face oil sealing mode, can bear higher pressure stress, guide valve core 23 long service life, steady quality, assembling and process optimization, reduce the part processing difficulty, installation and maintenance are convenient, improved life of product, reduce number of spare parts, reduce product cost.
The second pressure pilot valve 30 of the two poles of the earth of the present utility model electricity liquid precursor overflow valve mainly comprises: comprise pilot valve body 31, guide valve seat 32, guide valve core 33, damper 301, pressure spring 34, spring seat 35, controlling mechanism 36.Guide valve seat 32 loads onto damper 301 and corresponding seal ring 302 is screwed into pilot valve body 31 from pilot valve body left hole, and with screw plug 37 pilot valve body left hole is blocked; Spring seat 35 is contained in the controlling mechanism 36, is used for abutment pressure spring 34; Pressure spring 34 is contained on the spring seat 35, is used for initialization system pressure; Guide valve core 33 is contained on the pressure spring 34; Pack into spring seat 35, pressure spring 34, guide valve core 33 of controlling mechanism 36 together is screwed into pilot valve body 31 from pilot valve body right ports; And with the jump ring 38 pilot valve body 31 of packing into, with the position of restriction controlling mechanism 36.
Wherein, the guide valve seat 32 of the second pressure pilot valve 30 adopts screw thread to be screwed into mode, and guide valve seat 32 oil-through holes can be worked into reduced size, and by designing the pressure spring 34 of different size, thereby have 50,100,200,315,350 5 kind of pressure rating, the pressure height.Guide valve core 33 adopts standard steel ball embedding pressure type structures, with the oil sealing mode in guide valve seat 32 apertures be face oil sealing mode, can bear higher pressure stress, guide valve core 33 long service life, steady quality.Assembling and process optimization reduce the part processing difficulty, and installation and maintenance are convenient, improved life of product, reduce number of spare parts, reduce product cost.
As described below according to the two poles of the earth of the present utility model its working principle of electricity liquid precursor overflow valve that said structure is formed:
Two-stage electricity liquid precursor overflow valve is used for restriction system pressure, and secondary that can control system pressure by solenoid pilot valve 40 changes.Mainly comprise: specification is two or three the solenoid pilot valve parts 40 that are threaded of six latus rectums, the first pressure pilot valve part 20, the second pressure pilot valve part 30, the primary valve part 10 of band pressure regulating mechanism.When solenoid pilot valve 40 is in meta, two ends electromagnet a2, b2 outage, relief valve off-load.
Electromagnet a2 holds energising, fluid is by damping hole 126, path 10 2,205,303, solenoid valve A2 cavity pressure oil acts on the ball valve core 33 of the second pressure pilot valve 30, when the setting pressure of system pressure Overpressure of a safety valve spring 34, ball valve core 33 is opened, oil above the valve core of main valve 13 flows back to fuel tank (row in the control oil) through the T chamber and the pressure pilot valve internal channel 303,204,101 of solenoid valve 40 simultaneously, or flows back to fuel tank (control oil effluxes) by effluxing mouth.Like this, pressure oil produces a pressure reduction up and down at main valve plug 13, and main valve plug 13 is opened under the effect of this pressure reduction, flows to the B2 chamber at set pressure downforce oil from the A2 chamber, thereby keeps set pressure constant.
Electromagnet b2 holds energising, fluid acts on the ball valve core 23 of the first pressure pilot valve 20 by damping hole 126, path 10 2,205, when the setting pressure of system pressure Overpressure of a safety valve spring 34, ball valve core 23 is opened, oil above the valve core of main valve 13 flows back to fuel tank (row in the control oil) through pressure pilot valve internal channel 303,204,101 simultaneously, or flows back to fuel tank (control oil effluxes) by effluxing mouth.
Like this, pressure oil produces a pressure reduction up and down at main valve plug 13, and main valve plug 13 is opened under the effect of this pressure reduction, flows to the B2 chamber at set pressure downforce oil from the A2 chamber, thereby keeps set pressure constant.The set pressure of the first pressure pilot valve 20 must be higher than the set pressure of the second pressure pilot valve 30.Relief valve can or switch to different pressure (second pressure level) by hydraulic fluid port X off-load.
In sum, the utility model is compared with existing multipole electric liquid precursor overflow valve, has following advantage:
1) two pilot valves of the electric liquid precursor overflow valve in the two poles of the earth of the present utility model are the structures that superposes up and down, thereby have reduced the quantity of horizontal installing space and Assembly part;
2) primary valve part is by to the improvement of its spool, valve pocket, makes that its precursor overflow valve area of passage than prior art is big, through-current capability strong, pressure stability is stronger;
3) pilot valve partly is respectively the be threaded pilot valve body of solenoid valve and two particular design and the up-to-date series product of relief valve (50 series) pilot valve plug-in unit of 6 latus rectums and forms, pilot valve is the master ball sealing, five kinds of pressure ratings, Maximum operating pressure 35MPa, with respect to existing three grades of electric liquid precursor overflow valves, strengthened sealing, improved life of product, using scope is more extensive, and performance is more excellent.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art are not in breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (6)
1. the two poles of the earth electricity liquid precursor overflow valve is characterized in that comprising:
Main valve;
The first pressure pilot valve is fixed on the main valve;
The second pressure pilot valve is fixed on the first pressure pilot valve;
Solenoid pilot valve, be superimposed with the second pressure pilot valve after, be fixed in the lump on the first pressure pilot valve;
Wherein, described solenoid pilot valve, the second pressure pilot valve, the first pressure pilot valve and main valve are that vertical from top to bottom stack connects as one.
2. the two poles of the earth according to claim 1 electricity liquid precursor overflow valve, it is characterized in that described main valve comprises the main valve plug assembly of main valve body and portion's installation within it, described main valve plug assembly further comprises: main valve housing, main valve plug, spring seat, pressure spring, seal ring and damper; Main valve plug is housed in the main valve housing, spring seat is housed in the main valve plug, spring seat overcoat pressure spring, damper are arranged in the damping hole of main valve body; Wherein, described main valve housing radially direct 8 oil throughs, be conical surface seal between itself and the main valve plug.
3. the two poles of the earth according to claim 1 electricity liquid precursor overflow valve is characterized in that described solenoid pilot valve comprises valve body, spool, pressure spring, pad, one or two electromagnet; Be provided with spool in the valve body, pad is contained in the valve body two ends and is used for the abutment pressure spring; Pressure spring one end connects pad and is arranged in the electromagnet concentrating flux sleeve; Wherein, described two ends of valve body is provided with conical surface, forms conical surface seal with electromagnet, and electromagnet and valve body are for being threaded.
4. the two poles of the earth according to claim 1 electricity liquid precursor overflow valve is characterized in that the described first pressure pilot valve comprises pilot valve body, guide valve seat, damper, is contained in guide valve core on the pressure spring, is contained in pressure spring on the spring seat, is contained in spring seat, controlling mechanism and pad, sealing gasket and screw plug in the controlling mechanism; Guide valve seat is loaded onto damper, seal ring and back-up ring and is screwed into the pilot valve body threadably from pilot valve body left hole, and blocks pilot valve body left hole with screw plug and sealing gasket; Pack into spring seat, pressure spring, guide valve core of controlling mechanism together is screwed into the pilot valve body from pilot valve body right ports; And with the jump ring pilot valve body of packing into, with the position of restriction controlling mechanism.
5. the two poles of the earth according to claim 1 electricity liquid precursor overflow valve is characterized in that the described second pressure pilot valve comprises pilot valve body, guide valve seat, damper, is contained in guide valve core on the pressure spring, is contained in pressure spring on the spring seat, is contained in spring seat, controlling mechanism and pad, sealing gasket and screw plug in the controlling mechanism; Guide valve seat is loaded onto damper, seal ring and back-up ring and is screwed into the pilot valve body threadably from pilot valve body left hole, and blocks pilot valve body left hole with screw plug and sealing gasket; Pack into spring seat, pressure spring, guide valve core of controlling mechanism together is screwed into the pilot valve body from pilot valve body right ports; And with the jump ring pilot valve body of packing into, with the position of restriction controlling mechanism.
6. according to claim 4 or 5 described the two poles of the earth electricity liquid precursor overflow valves, it is characterized in that described guide valve core is the ball valve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201765542U CN201090549Y (en) | 2007-09-29 | 2007-09-29 | Bipolar electrohydraulic lead outflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201765542U CN201090549Y (en) | 2007-09-29 | 2007-09-29 | Bipolar electrohydraulic lead outflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090549Y true CN201090549Y (en) | 2008-07-23 |
Family
ID=39862310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201765542U Expired - Lifetime CN201090549Y (en) | 2007-09-29 | 2007-09-29 | Bipolar electrohydraulic lead outflow valve |
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| CN (1) | CN201090549Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207112A (en) * | 2011-06-13 | 2011-10-05 | 江铃汽车股份有限公司 | Double electronic control pilot type electromagnetic relief valve |
| CN104454747A (en) * | 2014-12-05 | 2015-03-25 | 浙江大学 | Novel high-frequency response pilot valve adopting double-three-position three-way proportional valve structure |
| CN106246628A (en) * | 2016-10-10 | 2016-12-21 | 合肥协力液压科技有限公司 | A kind of hydraulic buttery valve |
| CN108561357A (en) * | 2018-01-20 | 2018-09-21 | 邵立坤 | A kind of plug-in proportional pressure control valve |
-
2007
- 2007-09-29 CN CNU2007201765542U patent/CN201090549Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207112A (en) * | 2011-06-13 | 2011-10-05 | 江铃汽车股份有限公司 | Double electronic control pilot type electromagnetic relief valve |
| CN104454747A (en) * | 2014-12-05 | 2015-03-25 | 浙江大学 | Novel high-frequency response pilot valve adopting double-three-position three-way proportional valve structure |
| CN104454747B (en) * | 2014-12-05 | 2017-01-04 | 浙江大学 | A kind of novel high-frequency using double 3-position-3-way proportioning valve structure rings pilot valve |
| CN106246628A (en) * | 2016-10-10 | 2016-12-21 | 合肥协力液压科技有限公司 | A kind of hydraulic buttery valve |
| CN108561357A (en) * | 2018-01-20 | 2018-09-21 | 邵立坤 | A kind of plug-in proportional pressure control valve |
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Owner name: BEIJING HUADE HYDRAULIC INDUSTRIAL GROUP CO., LTD. Free format text: FORMER OWNER: TECHNOLOGY CENTER, HUADE HYDRAULIC INDUSTRIAL GROUP CO., LTD., BEIJING Effective date: 20100920 |
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Free format text: CORRECT: ADDRESS; FROM: 100176 NO.5, TONGJI NORTH ROAD, BEIJING ECONOMIC-TECHNOLOGICAL DEVELOPMENT AREA, BEIJING TO: 100176 NO.5, TONGJI NORTH ROAD, ECONOMIC-TECHNOLOGICAL DEVELOPMENT AREA, BEIJING |
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Effective date of registration: 20100920 Address after: 100176 No. 5 Tongji North Road, Beijing economic and Technological Development Zone Patentee after: Beijing Huade Hydraulic Industrial Group Co., Ltd. Address before: 100176 No. 5 Tongji North Road, Beijing economic and Technological Development Zone, Beijing Patentee before: Technology Center of Beijing Huade Hydraulic Industrial Group Co., Ltd. |
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| CX01 | Expiry of patent term |