CN204127390U - A kind of automatically controlled combined type guiding valve - Google Patents
A kind of automatically controlled combined type guiding valve Download PDFInfo
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- CN204127390U CN204127390U CN201420553873.0U CN201420553873U CN204127390U CN 204127390 U CN204127390 U CN 204127390U CN 201420553873 U CN201420553873 U CN 201420553873U CN 204127390 U CN204127390 U CN 204127390U
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- spool
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Abstract
The utility model discloses a kind of automatically controlled combined type guiding valve, comprise valve pocket and be arranged on the spool in valve pocket, one end of valve pocket is connected with power plant, valve pocket is provided with flow-in hole and flow-out hole, valve pocket is provided with influent stream pipe and outflow tube, spool is provided with the influent stream undercut groove as fluid flowing passage and commutation undercut groove, valve pocket is provided with connecting passage influent stream passage, the outside of spool is provided with valve core seal ring, valve pocket is provided with electromagnet, cone bar and Compress Spring are installed in valve pocket, valve pocket is provided with taper inner sealing surface at the inwall at influent stream passage place, cone bar is provided with the tapered portion corresponding to taper inner sealing surface near one end of influent stream passage.This guiding valve is before commutating, and influent stream passage blocked by cone bar, under making reversing oil circuit be in lower pressure, so commutation process is steady, there will not be hydrodynamic pressure to impact the situation of valve core seal ring, reduces valve core seal ring and is cut or the danger of scratch.
Description
Technical field
The utility model belongs to guiding valve field, more specifically, relates to a kind of automatically controlled combined type guiding valve.
Background technique
Guiding valve utilizes spool to do relative motion in valve body hole, the break-make of oil circuit control and change the flow of working medium and the valve of the flow direction, there is simple and compact for structure, the advantage such as volume is little, valve easily controls multiple path, fluid pressure balance, steering force are little, as a two-position four-way valve can replace two two position two-way valves, save installing space and the coupling such as joint, pipeline.Guiding valve is widely used in directional control valve, Proportional valve and servovalve in transmission fluid.
Guiding valve is made up of power plant and main body, and main body generally all comprises valve pocket and spool, and valve body has undercut groove, and spool has convex shoulder, changes the break-make relation of oil circuit with the relative sliding of spool and valve body and realizes commutating.
At present, mainly seal by gap using mineral oil as the guiding valve of working medium, in order to obtain good sealing effect, the matching gap in spool and valve pocket hole is generally needed to obtain very little, this just has higher requirement to machining accuracy, and can cause following problem simultaneously: control limit and easily produce wire drawing erosion; Gap is little, clamping force greatly, easily stuck, contamination resistance is poor.
But, adopt this structural type of guiding valve, even if gap is very little, is also difficult to realize sealing and zero leakage completely, when High Temperature High Pressure, due to fluid dielectric viscosity step-down, leaks and become more serious.The occasion of and High Temperature High Pressure work narrow in some arrangement space, wishes the advantage that sliding valve structure can be utilized compact, can realize again zero leakage sealing.In order to reach this object, a kind of method that can adopt on spool, installs seal ring additional to reduce the requirement of seal clearance, but for the sliding valve structure of routine, when high-pressure work, when the undercut groove that valve port enters on valve pocket crossed by seal ring on spool, seal ring can lose boundary constraint, once reenter valve pocket, is easily extruded or produces scraping.
Model utility content
For above defect or the Improvement requirement of prior art, the utility model provides a kind of combined type guiding valve, adopt, on spool, valve core seal ring is installed, valve pocket adopts the undercut groove on the valve pocket of flow-in hole and flow-out hole replacement conventional spool valves, reliably can realize the sealing of life cycle management, ensure the reliable commutation of oil-way system.It is flexible that this valve body amasss little, interface shape, can be installed on easily among various industrial piping system.
For achieving the above object, according to an aspect of the present utility model, provide a kind of automatically controlled combined type guiding valve, comprise valve pocket and be arranged on the spool in valve pocket, one end of valve pocket is connected with and can promotes the power plant that move axially of spool along valve pocket, valve pocket is provided with flow-in hole and flow-out hole, flow-in hole and flow-out hole are all arranged along the radial direction of valve pocket, valve pocket is provided with influent stream pipe and outflow tube, the center line of influent stream pipe and outflow tube is parallel to each other, influent stream pipe is communicated with flow-out hole with flow-in hole respectively with the inner chamber of outflow tube, described spool is provided with the influent stream undercut groove as fluid flowing passage and commutation undercut groove, commutation undercut groove can be communicated with flow-in hole with flow-out hole respectively with influent stream undercut groove, valve pocket is provided with for being communicated with influent stream undercut groove and the commutation connecting passage of undercut groove and the influent stream passage for being communicated with influent stream undercut groove and flow-in hole, the outside of spool is equipped with for preventing influent stream undercut groove and the valve core seal ring of the fluid leakage in undercut groove that commutates in the both sides of influent stream undercut groove and commutation undercut groove, valve pocket is provided with electromagnet, being provided with in valve pocket can by the cone bar of attraction after electromagnet energising and the Compress Spring that can make cone bar return after electromagnet power-off, Compress Spring can be coordinated extruding by cone bar and valve pocket, valve pocket is provided with taper inner sealing surface at the inwall at influent stream passage place, described cone bar is provided with the tapered portion corresponding to taper inner sealing surface near one end of influent stream passage, Compress Spring can apply elastic force makes tapered portion compress the taper inner sealing surface of valve pocket on cone bar, thus influent stream passage is blocked, attracting cone bar to move after electromagnet energising makes tapered portion be separated with the inwall of taper inner sealing surface place valve pocket, thus make influent stream channel conductive.
Preferably, described influent stream pipe is inserted on valve pocket, the outside of described influent stream pipe is provided with influent stream seal of tube circle, influent stream seal of tube circle is between influent stream pipe and valve pocket, the arranged outside of influent stream pipe has the first circular groove, described valve pocket is installed with the first fixing chuck plate, first fixing chuck plate is provided with influent stream pipe at consistent the first arc-shaped slot of the outer side wall radius at the first circular groove place, influent stream pipe is connected to outside the first arc-shaped slot at the outer side wall at the first circular groove place, thus is fixed on the first fixing chuck plate by influent stream pipe.
Preferably, described outflow tube is inserted on valve pocket, the outside of described outflow tube is provided with outflow tube seal ring, outflow tube seal ring is between outflow tube and valve pocket, the arranged outside of outflow tube has the second circular groove, described valve pocket is installed with the second fixing chuck plate, second fixing chuck plate is provided with outflow tube at consistent the second arc-shaped slot of the outer side wall radius at the second circular groove place, outflow tube is connected to outside the second arc-shaped slot at the outer side wall at the second circular groove place, thus is fixed on the second fixing chuck plate by outflow tube.
Preferably, described power plant are connected with spool by connecting rod, described spool is provided with the groove for installing connecting rod near one end of connecting rod, described groove comprises curve bath and square groove, described connecting rod is provided with the spherical portion corresponding to curve bath near one end of spool, and spherical portion is arranged on curve bath place, and the position that spool corresponds to square groove is limited part, it can carry out spacing to spherical portion, there is gap between the position of connecting rod in square groove and limited part.
Preferably, described power plant comprise reducing motor and are connected to the ball wire rod mechanism on reducing motor.
Preferably, described ball wire rod mechanism comprises ball screw and ball nut, and the two ends, left and right of described ball screw are provided with the position limit pin for limiting ball nut mobile position.
Preferably, described flow-in hole and flow-out hole are circular hole, and the diameter of circular hole is 1/10 ~ 1/2 of valve core seal ring thickness.
Preferably, described commutation undercut groove and flow-out hole all arrange multiple, an outflow tube is all installed at each flow-out hole place, spool all arranges described valve core seal ring in the both sides of each influent stream undercut groove and commutation undercut groove, each commutation undercut groove along poppet shaft to length be all greater than the spacing of two adjacent flow-out holes.
Preferably, the end cap that described valve pocket comprises sleeve, is fixedly connected on the valve body on sleeve and is fixedly connected on valve body, power plant are arranged on sleeve one end away from valve body, and valve body is provided with end cap away from one end of sleeve, and described electromagnet is arranged on end cap.
Preferably, described electromagnet is solenoid electromagnet, and it comprises coil and dynamic iron core, and cone bar is arranged on dynamic iron core, and described Compress Spring is socketed on dynamic iron core.
In general, the above technological scheme conceived by the utility model compared with prior art, can obtain following beneficial effect:
1) spool has been installed valve core seal ring to seal, fluid leaks very little;
2) owing to adopting valve core seal ring sealing, larger gap can be adopted between spool and valve pocket, not only reduce the processing technology difficulty of guiding valve entirety, also make guiding valve have good contamination resistance;
3) guiding valve can switch when low pressure, reduces valve core seal ring and is cut or the danger of scratch;
4) system pressure impact is little.Guiding valve is before commutating, and influent stream passage blocked by cone bar, makes reversing oil circuit be in lower pressure state, so commutation process is steady, there will not be hydrodynamic pressure to impact the situation of valve core seal ring.
5) be easy to realize the how logical function of the multidigit such as two-position four-way, 3-position 4-way.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model;
Fig. 2 is that the spool in Fig. 1 moves the sectional view after realizing commutation function;
Fig. 3 is the enlarged view at A place in Fig. 2;
Fig. 4 is the enlarged view at B place in Fig. 2;
Fig. 5 is the enlarged view at C place in Fig. 2;
Fig. 6 is the structural representation of the first fixing chuck plate in the utility model;
Fig. 7 is the structural representation of the second fixing chuck plate in the utility model.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.In addition, if below in described each mode of execution of the utility model involved technical characteristics do not form conflict each other and just can mutually combine.
As shown in Fig. 1 ~ Fig. 7, a kind of automatically controlled combined type guiding valve, the spool 12 comprising valve pocket 1 and be arranged in valve pocket 1, one end of valve pocket 1 is connected with and can promotes the power plant that move axially of spool 12 along valve pocket 1, and power plant can be cylinder, oil hydraulic cylinder, linear electric motor etc.As preferably, the ball wire rod mechanism that the power plant of the present embodiment comprise reducing motor 22 and are connected on reducing motor 22, described ball wire rod mechanism comprises ball screw 20 and ball nut 16, and the two ends, left and right of described ball screw 20 are provided with the position limit pin 19 for limiting ball nut 16 mobile position.
Valve pocket 1 is provided with flow-in hole 31 and flow-out hole 32, flow-in hole 31 and flow-out hole 32 are all arranged along the radial direction of valve pocket 1, valve pocket 1 is provided with influent stream pipe 8 and outflow tube 30, the center line of influent stream pipe 8 and outflow tube 30 is parallel to each other, and influent stream pipe 8 is communicated with flow-out hole 32 with flow-in hole 31 respectively with the inner chamber of outflow tube 30.Fluid flows to from the inner chamber of influent stream pipe 8, after the inner chamber of valve pocket 1, flows out again from outflow tube 30.Described spool 12 is provided with the commutation undercut groove 33 as fluid flowing passage and influent stream undercut groove 34, commutation undercut groove 34 can be communicated with flow-out hole 32, and influent stream undercut groove 34 can be communicated with flow-in hole 31.Valve pocket 1 is provided with for being communicated with commutation undercut groove 33 and the connecting passage 23 of commutation undercut groove 34 and the influent stream passage 35 for being communicated with commutation undercut groove 33 and flow-in hole 31, commutation undercut groove 33 can be communicated with flow-in hole 31 after spool 12 moves.After fluid enters from flow-in hole 31, commutation undercut groove 33 can be flow to through influent stream passage 35, then flow to commutation undercut groove 34 from commutation undercut groove 33 through connecting circulation passage, flowing out through flow-out hole 32 from commutation undercut groove 34 again.
The outside of spool 12 is equipped with the valve core seal ring 11 for preventing influent stream undercut groove 33 from leaking with the fluid in commutation undercut groove 34 at commutation undercut groove 33 and the both sides of commutation undercut groove 34.As preferably, described commutation undercut groove 34 and flow-out hole 32 all arrange multiple, an outflow tube 30 is all installed at each flow-out hole 32 place, spool 12 all arranges described valve core seal ring 11 in the both sides of each influent stream undercut groove 33 and commutation undercut groove 34, and the length of each commutation undercut groove 34 is all greater than the spacing of adjacent two flow-out holes 32.If arrange an outflow tube 30, then the utility model is bi-bit bi-pass guiding valve; Arrange two outflow tubes 30, then the utility model is two-position three way guiding valve; Arrange three outflow tubes 30, then the utility model is 3-position 4-way guiding valve.Seeing figures.1.and.2, is two-position four-way sliding valve structure.
Valve pocket 1 is provided with electromagnet 21, the end cap 3 that described valve pocket 1 comprises sleeve 14, is fixedly connected on the valve body 13 on sleeve 14 and is fixedly connected on valve body 13.Valve pocket 1 adopts segmented manufacture, processes more convenient.Power plant are arranged on sleeve 14 one end away from valve body 13, and described electromagnet 21 is arranged on end cap 3.The cone bar 5 attracted after being energized by electromagnet 21 and the Compress Spring 4 that can make cone bar 5 return after electromagnet 21 power-off are installed in valve pocket 1, valve pocket 1 is provided with taper inner sealing surface 36 at the inwall at influent stream passage 35 place, described cone bar 5 is provided with the tapered portion 37 corresponding to taper inner sealing surface 36 near one end of influent stream passage 35, Compress Spring 4 can apply elastic force makes tapered portion 37 compress taper inner sealing surface 36 on cone bar 5, thus influent stream passage 35 is blocked, attracting cone bar 5 to move after electromagnet 21 is energized makes tapered portion 37 be separated with the taper inner sealing surface 36 of valve pocket 1, thus make influent stream passage 35 conducting.Attract cone bar 5 after the effect of electromagnet 21 is mainly energized, therefore the classification that can select of electromagnet 21 is a lot, as long as the taper inner sealing surface 36 that can attract cone bar 5 to leave valve pocket 1 just can.As preferably, the electromagnet 21 of the present embodiment selects solenoid electromagnet, and it comprises coil and dynamic iron core 2, and cone bar 5 is threaded on dynamic iron core 2, and dynamic iron core 2 band mantle bar 5 when mobile moves.Described Compress Spring 4 is socketed on dynamic iron core 2, when boring bar 5 and being adsorbed by electromagnet 21, Compress Spring 4 can be coordinated extruding by the end cap 3 on cone bar 5 and valve pocket 1, after electromagnet 21 power-off, the spring energy of Compress Spring 4 makes cone bar 5 return, the tapered portion 37 of cone bar 5 is pressed in again on the taper inner sealing surface 36 of valve pocket 1, and blocked by influent stream passage 35, then spool 12 just under low pressure can move the commutation function to realize guiding valve.In the present embodiment, taper inner sealing surface 36 is arranged on valve body 13, and tapered rod is positioned at valve body 13.
Further, described influent stream pipe 8 is inserted on valve pocket 1, the outside of described influent stream pipe 8 is provided with influent stream seal of tube circle 24, influent stream seal of tube circle 24 is between influent stream pipe 8 and valve pocket 1, the arranged outside of influent stream pipe 8 has the first circular groove, described valve pocket 1 is installed with the first fixing chuck plate 9, first fixing chuck plate 9 is provided with influent stream pipe 8 at consistent the first arc-shaped slot 25 of the outer side wall radius at the first circular groove place, influent stream pipe 8 is connected to outside the first arc-shaped slot 25 at the outer side wall at the first circular groove place, thus is fixed on by influent stream pipe 8 on first fixing chuck plate 9; Described outflow tube 30 is inserted on valve pocket 1, the outside of described outflow tube 30 is provided with outflow tube 30 seal ring 7, outflow tube 30 seal ring 7 is between outflow tube 30 and valve pocket 1, the arranged outside of outflow tube 30 has the second circular groove, described valve pocket 1 is installed with the second fixing chuck plate 10, second fixing chuck plate 10 is provided with outflow tube 30 at consistent the second arc-shaped slot 26 of the outer side wall radius at the second circular groove place, outflow tube 30 is connected to outside the second arc-shaped slot 26 at the outer side wall at the second circular groove place, thus is fixed on the second fixing chuck plate 10 by outflow tube 30.This installation form safe ready is quick, without the need to configuring joint in addition, in the entire system, and dismounting guiding valve that can be convenient, flexible.Thread type is adopted to be connected with forward streams pipe 8 with outflow tube 30, if its other end is provided with miscellaneous equipment, just very inconvenient when being then installed to again on valve pocket 1, and the present embodiment adopts plug-in type to connect, and influent stream pipe 8 and outflow tube 30 can be made to be installed to more easily on valve pocket 1.
Further, described power plant are connected with spool 12 by connecting rod 15, described spool 12 is provided with the groove for installing connecting rod 15 near one end of connecting rod 15, described groove comprises curve bath 27 and square groove 28, described connecting rod 15 is provided with the spherical portion 29 corresponding to curve bath 27 near one end of spool 12, spherical portion 29 is arranged on curve bath 27 place, the position that spool 12 corresponds to square groove 28 is limited part, it can carry out spacing to spherical portion 29, there is gap between the position of connecting rod 15 in square groove 28 and limited part.
Further, described flow-in hole 31 and flow-out hole 32 are circular hole, and the diameter of circular hole is 1/10 ~ 1/2 of valve core seal ring 11 thickness, and such valve pocket 1 is not easy valve core seal ring 11 scratch at the edge of flow-in hole 31 and flow-out hole 32.
Drive form of the present utility model is for being converted to the straight line motion needed for spool 12 by the rotary motion of reducing motor 22 by ball screw framework.Reducing motor 22 is the Low speed electric motor with speed reducer, provides the dynamic torque needed for system.Reducing motor 22 and valve body 13 are connected and fixed by sleeve 14, and sleeve 14 one end is connected with reducing motor 22 by screw, and the Connecting format of the other end and valve body 13 is threaded.The stroke of ball screw framework is fixing.Whole ball wire rod mechanism comprises ball nut 16, ball 17, ball bearing guide bushing 18, position limit pin 19, ball screw 20.Form space between ball screw 20 and ball nut 16, run through in space and place ball 17, and ball 17 is embedded in ball bearing guide bushing 18, is provided with position limit pin 19 at ball screw 20 two ends.When ball nut 16 move to the limited pin 19 of limit position block time, position limit pin 19 blocks ball bearing guide bushing 18 and stops it to do straight line motion, reducing motor 22 works on, because the ball 17 in thread pitch cannot continue to do straight line motion, ball screw 20 is made to drive ball bearing guide bushing 18 to do relative slip/stick movement with ball nut 16, ball nut 16 rests on limit position, and whole ball screw framework carries out original place slip/stick movement at limit position.Spool 12 stroke of this guiding valve is fixed journey system, only need control the clockwise and anticlockwise of motor and achievable guiding valve commutation function during working control.
Be processed with bulb in the front end of connecting rod 15, match with the curve bath 27 of spool 12 front end, form self-align connection.Ball screw framework, connecting rod 15 and spool 12 are due to factors such as manufacture and installations, certain nonconcentricity may be there is, promote just to have eccentric force when spool 12 moves at ball nut 16, if connecting rod 15 adopts with spool 12 forms that is rigidly connected such as being threaded, just may connection part be made stuck because of eccentric force.And the present embodiment adopts spherical portion 29 and curve bath 27 to match is self-alignly connected, connecting rod 15 can do and swing by a small margin, then effectively can avoid the stuck phenomenon generation caused because of eccentric force.
Spool 12 is processed with groove for installing valve core seal ring 11, valve core seal ring 11 and valve body 13 fitted seal.Valve body 13 arranges three flow-out holes 32 (three flow-out holes 32 are respectively A mouth, T mouth, B mouth).As preferably, three flow-out holes 32 are arranged in one with on the straight line of the axis being parallel of valve body 13.Flow-in hole 31 (P mouth) is set at another position of valve body 13.Cone bar 5 is designed with, pressure when commutating for spool control valve in valve body 13.Cone bar 5 is processed with groove, and groove place is provided with cone rod seal circle 6, and cone rod seal circle 6 matches with valve body 13 and seals.Taper inner sealing surface 36 on the cone tapered portion 37 of bar 5 and valve body 13 is for be firmly sealed and matched, and its sealing force is provided by the elastic force of Compress Spring 4, ensures its reliability sealed.
Under this guiding valve is mainly applied to High Temperature High Pressure occasion, working environment is about 150 DEG C in temperature, and pressure is about 40MPa, and therefore working environment is comparatively severe.After flow-in hole 31 (P mouth) enters high-pressure liquid, if do not take to control, then when spool 12 moves realization commutation, high-pressure liquid in valve pocket 1 may impact valve core seal ring 11, valve core seal ring 11 is made to depart from original position, so neither utilize the normal movement of spool 12, and easily rest on flow-in hole 31 or flow-out hole 32 place by flow-in hole 31 or flow-out hole 32 to blocking.Therefore, spool 12 is when mobile, and must carry out at lower pressures, such fluid just can not impact valve core seal ring 11.So, when spool 12 moves, tapered portion 37 on cone bar 5 is pressed on the inner conical surface on valve body 13, by influent stream passage 35 to blocking, the high-pressure liquid of P mouth is not allowed to flow in valve body 13 from influent stream passage 35, under being just in lower pressure in such valve body 13, the valve core seal ring 11 of spool 12 when mobile on it can not be extruded.
Automatically controlled combined type guiding valve of the present utility model, valve body 13 has flow-in hole 31 and flow-out hole 32, replace the undercut groove on the valve pocket of conventional slide valve, spool 12 is designed with groove to install valve core seal ring 11, the seal form of guiding valve is made to be no longer sealed by the Spielpassung of spool 12 with valve body 13, but by valve core seal ring 11 and valve body 13 fitted seal, substantially increase the safety reliability of sealing, eliminate under high temperature due to spool 12, the deformation of valve body 13 and the stuck phenomenon caused, greatly can also reduce the quality of fit requirement of spool 12 and valve body 13, reduce the manufacture difficulty of spool 12 and valve body 13.
The automatically controlled combined type guiding valve of the utility model is before commutation, the influent stream passage 35 of guiding valve is cut off by the cone bar 5 before control influent stream passage 35, thus make spool 12 be in normal pressure low-pressure state when commutating, avoid the situation that valve core seal ring 11 is scraped off, improve the sealingly secure reliability of guiding valve.For obtaining reliable and secure commutation under High Temperature High Pressure and good sealability, guiding valve carries out in commutation time-division two step: its course of action is divided into two steps to control: first make electromagnet 21 power-off, Compress Spring 4 promotion cone bar 5 moves the fluid cut off in influent stream passage 35, P mouth and cannot flow into valve body 13; Then start reducing motor 22, drive ball screw 20 mechanism kinematic, the converting rotary motion of reducing motor 22 is become the straight line motion of ball nut 16 ball nut 16 spline, so promote spool 12 move oil circuit control commutation (P → A,
a → T), after having commutated, then it is electric that electromagnet 21 is obtained, and opens influent stream path, and the fluid in P mouth flows into valve body 13.
The automatically controlled part of this guiding valve mainly contains two large divisions, and first portion is the reducing motor 22 of spool control valve commutation, and another part is the electromagnet 21 controlling cone bar 5.During this automatically controlled combined type guiding valve specific works, first make electromagnet 21 power-off, the taper inner sealing surface 36 on valve pocket 1 blocked by Compress Spring 4 promotion cone bar 5, cuts off influent stream passage 35.Then start reducing motor 22, drive ball screw 20 to move, the converting rotary motion of reducing motor 22 is become the straight line motion of ball nut 16, and then promote the commutation that spool 12 moves oil circuit control.Automatically controlled combined type guiding valve of the present utility model, spool 12 has installed valve core seal ring 11, the seal form of this guiding valve is made to be no longer that traditional spool 12 seals with the Spielpassung of valve body 13, but by valve core seal ring 11 and valve body 13 fitted seal, thus greatly can reduce the quality of fit requirement of spool 12 and valve body 13, reduce spool 12 and the machining difficulty of valve body 13, the safety reliability of its sealing can also be improved.The compact structure of guiding valve own, the flow-in hole 31 in valve body 13 and the aperture of flow-out hole 32 all smaller.Owing to being difficult to carry out rounding process to the edge of the close spool 12 of flow-in hole 31 and flow-out hole 32, sharp edge can be there is.If reducing motor 22 drives guiding valve under high pressure to commutate, when valve core seal ring 11 is by flow-in hole 31 and flow-out hole 32, can by sharp edge scratch, and cause seal failure, therefore guiding valve is before commutation, needs to control the influent stream passage 35 that cone bar 5 cuts off guiding valve, thus under making spool 12 be in lower pressure when moving and realizing guiding valve commutation, avoid valve core seal ring 11 to be scraped off, improve the sealingly secure reliability of guiding valve.
The working medium of the automatically controlled combined type guiding valve of the utility model can use hydraulic oil and pure water, but in high temperature environments, should use high flame retardant hydraulic oil, be applicable to, drives the field such as extraction system, power station under oil, gas well.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an automatically controlled combined type guiding valve, comprise valve pocket (1) and be arranged on the spool (12) in valve pocket (1), one end of valve pocket (1) is connected with and can promotes the power plant that move axially of spool (12) along valve pocket (1), valve pocket (1) is provided with flow-in hole (31) and flow-out hole (32), flow-in hole (31) and flow-out hole (32) are all arranged along the radial direction of valve pocket (1), valve pocket (1) is provided with influent stream pipe (8) and outflow tube (30), the center line of influent stream pipe (8) and outflow tube (30) is parallel to each other, influent stream pipe (8) is communicated with flow-out hole (32) with flow-in hole (31) respectively with the inner chamber of outflow tube (30), it is characterized in that: described spool (12) is provided with the influent stream undercut groove (33) as fluid flowing passage and commutation undercut groove (34), commutation undercut groove (34) can be communicated with flow-in hole (31) with flow-out hole (32) respectively with influent stream undercut groove (33), valve pocket (1) is provided with for being communicated with influent stream undercut groove (33) and the connecting passage (23) of commutation undercut groove (34) and the influent stream passage (35) for being communicated with influent stream undercut groove (33) and flow-in hole (31), the outside of spool (12) is equipped with for preventing influent stream undercut groove (33) and the valve core seal ring (11) of the fluid leakage in undercut groove (34) that commutates in the both sides of influent stream undercut groove (33) and commutation undercut groove (34), valve pocket (1) is provided with electromagnet (21), being provided with in valve pocket (1) can by the cone bar (5) of attraction after electromagnet (21) energising and the Compress Spring (4) that can make cone bar (5) return after electromagnet (21) power-off, Compress Spring (4) can be coordinated extruding by cone bar (5) and valve pocket (1), valve pocket (1) is provided with taper inner sealing surface (36) at the inwall at influent stream passage (35) place, described cone bar (5) is provided with taper inner sealing surface (36) corresponding tapered portion (37) near one end of influent stream passage (35), Compress Spring (4) can apply elastic force makes tapered portion (37) compress the taper inner sealing surface (36) of valve pocket (1) on cone bar (5), thus influent stream passage (35) is blocked, attracting cone bar (5) to move after electromagnet (21) energising makes tapered portion (37) be separated with taper inner sealing surface (36), thus make influent stream passage (35) conducting.
2. the automatically controlled combined type guiding valve of one according to claim 1, it is characterized in that: described influent stream pipe (8) is inserted on valve pocket (1), the outside of described influent stream pipe (8) is provided with influent stream seal of tube circle (24), influent stream seal of tube circle (24) is positioned between influent stream pipe (8) and valve pocket (1), the arranged outside of influent stream pipe (8) has the first circular groove, described valve pocket (1) is installed with the first fixing chuck plate (9), first fixing chuck plate (9) is provided with influent stream pipe (8) at consistent the first arc-shaped slot (25) of the outer side wall radius at the first circular groove place, influent stream pipe (8) is connected to the first arc-shaped slot (25) outward at the outer side wall at the first circular groove place, thus influent stream pipe (8) is fixed on the first fixing chuck plate (9).
3. the automatically controlled combined type guiding valve of one according to claim 1, it is characterized in that: described outflow tube (30) is inserted on valve pocket (1), the outside of described outflow tube (30) is provided with outflow tube (30) seal ring (7), outflow tube (30) seal ring (7) is positioned between outflow tube (30) and valve pocket (1), the arranged outside of outflow tube (30) has the second circular groove, described valve pocket (1) is installed with the second fixing chuck plate (10), second fixing chuck plate (10) is provided with outflow tube (30) at consistent the second arc-shaped slot (26) of the outer side wall radius at the second circular groove place, outflow tube (30) is connected to the second arc-shaped slot (26) outward at the outer side wall at the second circular groove place, thus outflow tube (30) is fixed on the second fixing chuck plate (10).
4. the automatically controlled combined type guiding valve of one according to claim 1, it is characterized in that: described power plant are connected with spool (12) by connecting rod (15), described spool (12) is provided with the groove for installing connecting rod (15) near one end of connecting rod (15), described groove comprises curve bath (27) and square groove (28), described connecting rod (15) is provided with curve bath (27) corresponding spherical portion (29) near one end of spool (12), spherical portion (29) is arranged on curve bath (27) place, spool (12) is limited part corresponding to the position of square groove (28), it can carry out spacing to spherical portion (29), gap is there is between the position of connecting rod (15) in square groove (28) and limited part.
5. the automatically controlled combined type guiding valve of one according to claim 1, is characterized in that: the ball wire rod mechanism that described power plant comprise reducing motor (22) and are connected on reducing motor (22).
6. the automatically controlled combined type guiding valve of one according to claim 5, it is characterized in that: described ball wire rod mechanism comprises ball screw (20) and ball nut (16), the two ends, left and right of described ball screw (20) are provided with the position limit pin (19) for limiting ball nut (16) mobile position.
7. the automatically controlled combined type guiding valve of one according to claim 1, is characterized in that: described flow-in hole (31) and flow-out hole (32) are circular hole, and the diameter of circular hole is 1/10 ~ 1/2 of valve core seal ring (11) thickness.
8. the automatically controlled combined type guiding valve of one according to claim 1, it is characterized in that: described commutation undercut groove (34) and flow-out hole (32) all arrange multiple, an outflow tube (30) is all installed at each flow-out hole (32) place, spool (12) all arranges described valve core seal ring (11) in the both sides of each influent stream undercut groove (33) and commutation undercut groove (34), and each commutation undercut groove (34) is all greater than the spacing of two adjacent flow-out holes (32) along the length that spool (12) is axial.
9. the automatically controlled combined type guiding valve of one according to claim 1, it is characterized in that: the end cap (3) that described valve pocket (1) comprises sleeve (14), is fixedly connected on the valve body (13) on sleeve (14) and is fixedly connected on valve body (13), power plant are arranged on sleeve (14) one end away from valve body (13), valve body (13) is provided with end cap (3) away from one end of sleeve (14), and described electromagnet (21) is arranged on end cap (3).
10. the automatically controlled combined type guiding valve of one according to claim 1, it is characterized in that: described electromagnet (21) is solenoid electromagnet, it comprises coil and dynamic iron core (2), cone bar (5) is arranged on dynamic iron core (2), and described Compress Spring (4) is socketed on dynamic iron core (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420553873.0U CN204127390U (en) | 2014-09-24 | 2014-09-24 | A kind of automatically controlled combined type guiding valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420553873.0U CN204127390U (en) | 2014-09-24 | 2014-09-24 | A kind of automatically controlled combined type guiding valve |
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| Publication Number | Publication Date |
|---|---|
| CN204127390U true CN204127390U (en) | 2015-01-28 |
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| CN201420553873.0U Expired - Fee Related CN204127390U (en) | 2014-09-24 | 2014-09-24 | A kind of automatically controlled combined type guiding valve |
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| Country | Link |
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| CN (1) | CN204127390U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830202A (en) * | 2017-10-25 | 2018-03-23 | 上海永瑞气动有限公司 | The electromagnetic control valve of valve core structure can be combined in multistage |
-
2014
- 2014-09-24 CN CN201420553873.0U patent/CN204127390U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830202A (en) * | 2017-10-25 | 2018-03-23 | 上海永瑞气动有限公司 | The electromagnetic control valve of valve core structure can be combined in multistage |
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Granted publication date: 20150128 Termination date: 20170924 |