CN104344017A - Plane sealing type reversing valve - Google Patents
Plane sealing type reversing valve Download PDFInfo
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- CN104344017A CN104344017A CN201410589335.1A CN201410589335A CN104344017A CN 104344017 A CN104344017 A CN 104344017A CN 201410589335 A CN201410589335 A CN 201410589335A CN 104344017 A CN104344017 A CN 104344017A
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- hydraulic fluid
- fluid port
- return opening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Multiple-Way Valves (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a plane sealing type reversing valve which belongs to hydraulic control valves and is used for the fluid switching of a plurality of channels and solving the problem that the reversing valves at present are relatively large in reversing operation force, bad in anti-pollution capacity, high in processing difficulty and high in cost. The plane sealing type reversing valve comprises a lower valve seat, a support seat, a sliding block, an upper valve seat, a fixed valve element, a disc spring, a floating valve element, a sleeve, a ball screw assembly, a connection threaded sleeve, a push rod and a gear motor. According to the plane sealing type reversing valve, plane sealing is used, and the small rotary gear motor with the ball screw assembly is used for linear driving to drive the sliding block to move straightly and control the reversing of the oil path. The plane sealing type reversing valve is simple in structure, convenient in interface form and good in manufacturability, is capable of reliably realizing the sealing of the entire life cycle and ensuring the reliable reversing of the hydraulic systems, is suitable for standard and serial production and suitable for the high-temperature high-pressure severe environments and working conditions such as petroleum and natural gas extraction, and can be used for the fluid control of various hydraulic systems.
Description
Technical field
The invention belongs to hydraulic control valve, be specifically related to a kind of flat closed type selector valve, the fluid that can be used for the such as High Temperature High Pressure such as power plant, oil-gas mining field controls.
Background technique
In hydraulic system, hydraulic control valve is widely used in the direction of flow of hydraulic control system, hydraulic control valve is generally made up of main parts size such as spool, valve body, driving mechanisms, according to the difference of seal spool form, conventional hydraulic control valve can be divided into guiding valve class and the large class of poppet valve class two:
(1) guiding valve class: spool is cylindrical, and spool and valve body have undercut groove, spool and valve body Spielpassung seal, and are changed the break-make of flow channel by the relative sliding of spool in valve body hole, to realize the control of convection cell; Advantages such as guiding valve class selector valve is simple owing to having structure, and commutation switches rapidly, and the unbalanced force suffered by spool is less, and the required steering force of commutation is less and being widely used in hydraulic transmission control system.But the spool of guiding valve class selector valve and valve body need the gap ensureing relative movement, so the main Spielpassung by spool and valve body seals, leak and be often difficult to avoid.Particularly for this low viscous working medium of such as water, under same matching gap and pressure reduction, the leakage loss of medium can become the increase of decades of times.Therefore, just must reduce the matching gap of spool valve body to reduce leakage rate, this will inevitably propose higher requirement to processing technology, and the clamping force of kinematic pair also can be caused during relative movement to increase, even occur stuck phenomenon, required steering force also can be larger.As the guiding valve that German Hauhinco company produces, for obtaining very little matching gap, valve core of the spool valve adopts ceramic making, improves difficulty of processing and processing cost greatly, and the easily blocking of contamination resistance difference, therefore application is greatly limited.
(2) poppet valve class: this kind of valve comprises cone valve, ball valve, flap type, spool and valve seat are gap-free sealed cooperation, mainly utilize the movement in spool opposite valve seat hole to change cut-offfing of flow channel, to realize the control of convection cell.Poppet valve class selector valve conveyance capacity is strong, and spool can shut completely, and the leakage of valve is little (even No leakage), and contamination resistance is strong, and fast response time, is also widely used in hydraulic system.Although poppet valve has good sealability, but the axial hydraulic force unbalance that spool is subject to, simultaneously in order to obtain stable dynamic performance, spring rate is often larger, particularly under high-pressure situations time, very large steering force will be needed, and control while realizing convection cell multi-path, often need the poppet valve of multiple monomer to combine.As the cone valve type three position four-way directional control valve that Finland Danfoss develops, combined by 4 groups of unidirectional controlled cone valves, with 4 groups of electromagnet, it is controlled separately respectively, this kind of valve conveyance capacity is strong, and cavitation resistive property is good, but affects by machining accuracy, axial unbalanced pressure cannot be overcome completely, required steering force is also comparatively large, and owing to being combined by multiple single valve, not only volume is comparatively large but also cost is also higher.
Summary of the invention
The invention provides a kind of flat closed type selector valve, switch for multichannel fluid, solve existing selector valve reversing maneuver power comparatively large, contamination resistance is poor, and processing technology difficulty is large, high in cost of production problem.
A kind of flat closed type selector valve provided by the present invention, comprises lower valve base, supporting base, slide block, upper valve base, fixed spool, disc spring, floating plug, sleeve, ball screw assembly, connects swivel nut, push rod, reducing motor, it is characterized in that:
Described lower valve base is placed with supporting base, described supporting base is rectangle frame, it is while have tapped hole, for coupling sleeve, slide block is placed in supporting base and also can be free to slide, upper valve base is covered in supporting base and upper end of slide block face, and lower valve base, supporting base and upper valve base are fixed by Stud connection, are closed by slide block;
Described slide block is rectangular cubic, its upper-end surface has circular upper groove, and its lower end surface has circular low groove, and the center of circle of upper groove and low groove coaxially and be communicated with by axial intercommunicating pore, there is bottom upper groove the circular groove concentric with axial intercommunicating pore, slide block seal ring is installed in it; The side of slide block has tapped blind hole, for being threaded with push rod;
Described fixed spool is disc, is embedded in described upper groove, and the upper-end surface of fixed spool has concentric interior circular groove and outer groove;
In described low groove, disc spring and floating plug are housed from top to bottom, disc spring carries out dynamic compensation together with floating plug; Floating plug is cylindrical, has the axial hole along its axis, and floating plug excircle has annular groove, is provided with valve core seal ring in it, makes floating plug coordinate to be formed with described low groove and seal;
Described upper valve base have the first commutation hydraulic fluid port, the second commutation hydraulic fluid port, filler opening and the first return opening, the second return opening, the interior circular groove circle centre position of the first commutation hydraulic fluid port, the second commutation hydraulic fluid port, filler opening and the first return opening and fixed spool is on same level axis, and the second return opening is positioned at filler opening vertical direction; Filler opening is positioned at S/2 place on the right side of the circular groove center of circle, first commutation hydraulic fluid port, the second commutation hydraulic fluid port are symmetrically distributed in the right left both sides of filler opening, be (r2+r3-S)/2 with filler opening distance, the first return opening is positioned at (r2+r3+S)/2 place on the right side of filler opening; Second return opening is in filler opening vertical direction
place, described first return opening is linked up oil circuit with the second return opening by the cross in upper valve base and is communicated with, S is the stroke of ball screw assembly, r1 is the radius of interior circular groove, r2, r3 are respectively internal diameter and the external diameter of outer groove, and 2r1>S> (r2+r3-2r1)/2;
Described sleeve is the cylinder with inner cavity, its front end is closed and is formed boss, and boss side surfaces has outside thread, to be threaded with described tapped hole, raised head face has the push-rod hole being axially communicated with inner cavity, ball screw assembly is housed in described inner cavity and is connected swivel nut;
Described ball screw assembly is made up of leading screw, ball nut, ball bearing guide bushing, steel ball, left end position limit pin, right-hand member position limit pin; Described ball nut is the second order Step Shaft with axial hole, and its small end has outside thread; On leading screw, cover has the ball bearing guide bushing embedding steel ball, leading screw passes the axial hole of ball nut together with ball bearing guide bushing and forms Spielpassung, described steel ball coordinates with leading screw, leading screw is separately installed with left end position limit pin, right-hand member position limit pin close to two ends, left and right, to be limited the ball bearing guide bushing motion embedding steel ball;
Described connection swivel nut is second order Step Shaft, is processed with ball-and-socket in its small end, and the large end connecting swivel nut has axial cavity, and axial cavity oral area has internal thread, to be connected with the small end of ball nut;
Described push rod is connected as a single entity by spiro rod section, shaft and afterbody bulb and forms; The shaft of push rod passes the push-rod hole of sleeve, and the tapped blind hole of spiro rod section and slide block side is threaded, and afterbody bulb is positioned at the ball-and-socket connecting swivel nut;
Described reducing motor is connected by screw the inner cavity port in described sleeve, and the motor shaft of reducing motor is connected by key pin with leading screw right-hand member, by leading screw, the rotary motion of reducing motor is converted to the straight line motion of slide block;
When ball nut move to limit position blocked by left end position limit pin or right-hand member position limit pin time, left end position limit pin or right-hand member position limit pin block ball bearing guide bushing and stop it to do straight line motion, reducing motor works on, because the steel ball in thread pitch cannot continue to do straight line motion, leading screw is made to drive ball bearing guide bushing to do relative slip/stick movement with ball nut, ball nut rests on limit position, and whole ball screw assembly skids in limit position original place, keeps stroke S;
In the stroke S of ball screw assembly, filler opening is all the time in fixed spool in circular groove, first return opening or the second return opening always have one to be positioned in the outer groove of fixed spool, when fixed spool does straight line motion, realize the first commutation hydraulic fluid port, the second commutation hydraulic fluid port moves between circular groove and outer groove in fixed spool, complete commutation function.
Described flat closed type selector valve, it is further characterized in that:
Described upper valve base surface has parallel front raised line and rear raised line, forms concave shape cross section, and forward and backward raised line and upper valve base surface intersection location have recessed restraining groove respectively,
First commutation hydraulic fluid port, the second commutation hydraulic fluid port, filler opening and the first return opening are fitted with connecting tube respectively, and the pipe shaft of connecting tube has annular seal groove and annular positioning groove from bottom to top successively;
Card is rectangular sheet, its side has the position hydraulic fluid port, second that commutates with first respectively and to commutate four bayonet sockets corresponding to hydraulic fluid port, filler opening and the first return opening, after when four connecting tubes, plug-in mounting enters four hydraulic fluid ports respectively, card level is injected in the restraining groove on upper valve base surface, blocked the annular positioning groove of four connecting tubes by four bayonet sockets of card, then by screw, card is fixed on upper valve base.
The present invention adopts upper and lower biplane seal form, the lower end surface of fixed spool and upper valve base, floating plug and the flat fitted seal of lower valve base upper-end surface plane, floating plug, fixed spool material adopt the high-strength abrasion-proof engineering plastics with good self lubricity, sealing valve port position is made to realize firmly being sealed and matched soft joining, seal pressure is little, and structure is reliably simple and safe, can realize zero leakage sealing.Floating plug can freely up and down float in slide block, in order to compensating spool wearing and tearing and temperature, pressure change, there is good adaptivity.
The upper-end surface of fixed spool has concentric interior circular groove and outer groove, form dual torus sealing surface, interior circular groove is high-pressure channel, outer groove is low-pressure channel, commutation function is realized: filler opening is all the time in fixed spool in circular groove by promoting slide block, first return opening or the second return opening always have one to be positioned in the outer groove of fixed spool, when fixed spool does straight line motion, realize the first commutation hydraulic fluid port, the second commutation hydraulic fluid port moves between circular groove and outer groove in fixed spool, complete commutation function.
Ball screw assembly in the present invention for driving fixed spool to do straight line back and forth movement is the skidded parts of fixed journey system.Limit position at two ends and leading screw do and rotate relative to skidding by ball nut, and the distance of two ends limit position is the stroke of ball screw assembly, only need control the clockwise and anticlockwise of reducing motor and achievable valve commutation function during working control.
Compared with prior art, the present invention has following beneficial effect:
1, adopt flat closed type spool, spool is sealed by end face with bonnet and lower valve base, realizes zero leakage while can ensureing reliably to commutate;
2, the combination seal form of fixed spool and floating plug is adopted.The sealing surface of fixed spool is dual torus structure, by reasonable Arrangement first commutate hydraulic fluid port, second commutation hydraulic fluid port, filler opening and the first return opening, the second return opening position, no matter can realize working medium is static or in a dynamic state, be sealed in the sealing surface of fixed spool and floating plug all completely, can remove the sealing at all the other positions of valve from, the reliability that both improve sealing also greatly simplify valve overall structure;
3, floating plug and be arranged on wearing and tearing that the combination disk spring in slide block can bring spool long-term work, the change of working pressure and temperature compensates, in the life cycle management of valve, all there is reliable sealability, to operating ambient temperature and pressure, also there is better adaptability;
4, fixed spool and floating plug adopt the high-strength abrasion-proof engineering plastics with good self lubricity, and valve remaining part all adopts corrosion resistant material, and working medium can adopt hydraulic oil or water.Owing to being upper and lower end face sealing, valve will not be subject to lateral forces, and guarantee spool can not deflection, select suitable disc spring, reasonably design seal pressure, therefore no matter working medium adopts oil or water, even if valve can be made to use in case of high pressures, also only need very little steering force.
5, interface shape of the present invention is plug-in type, and on the cylindrical of connecting tube, be namely processed with groove install seal ring, the mounting hole corresponding on valve body matches to be formed and seal.Connecting tube be fixedly sticked on steel pipe in corresponding groove by card, then with screw, card to be fixed on valve body.This installation form safe ready is quick, without the need to configuring joint in addition, in the entire system, and dismounting that can be convenient, flexible.
Structure of the present invention is simple, interface shape convenient, good manufacturability, reliably can realize the sealing of life cycle management, ensure the reliable commutation of hydraulic system, be suitable for standardization, producing in serial form, be applicable to the such as High Temperature High Pressure harsh and unforgiving environments operating mode such as oil, natural gas extraction down-hole, can be used for various hydraulic fluid and control.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 slide block structure schematic diagram;
Fig. 3 fixed spool structural representation;
Fig. 4 floating plug structural representation;
Fig. 5 is the A-A sectional view of Fig. 1;
Fig. 6 tube-in-tube structure schematic diagram;
Fig. 7 ball screw modular construction schematic diagram;
Fig. 8 pusher structure schematic diagram;
Fig. 9 hydraulic fluid port and valve core sealed cover relative position arrange schematic diagram;
Figure 10 connecting pipe structure schematic diagram;
Figure 11 is the plan view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described:
As shown in Figure 1, the present invention includes lower valve base 010, supporting base 020, slide block 030, upper valve base 040, fixed spool 050, disc spring 060, floating plug 070, sleeve 080, ball screw assembly 090, connect swivel nut 100, push rod 110, reducing motor 120;
Described lower valve base 010 is placed with supporting base 020, described supporting base 020 is rectangle frame, it is while have tapped hole 021, for coupling sleeve 080, slide block 030 is placed in supporting base 020 and also can be free to slide, upper valve base 040 is covered in supporting base 020 and slide block 030 upper-end surface, and lower valve base 010, supporting base 020 and upper valve base 040 are connected and fixed by stud 150, are closed by slide block 30;
As shown in Figure 2, described slide block 030 is rectangular cubic, its upper-end surface has circular upper groove 031, its lower end surface has circular low groove 032, the center of circle of upper groove 031 and low groove 032 coaxially and be communicated with by axial intercommunicating pore 033, there is bottom upper groove 031 circular groove 034 concentric with axial intercommunicating pore 033, slide block seal ring 160 is installed in it; The side of slide block 030 has tapped blind hole 035, for being threaded with push rod;
As shown in Figure 3, described fixed spool 050 is disc, is embedded in described upper groove 031, and the upper-end surface of fixed spool 050 has concentric interior circular groove 051 and outer groove 052;
Disc spring 060 and floating plug 070 are housed in described low groove 032 from top to bottom, and disc spring carries out dynamic compensation together with floating plug; As shown in Figure 4, floating plug 070 is cylindrical, has the axial hole 071 along its axis, and floating plug 070 excircle has annular groove 072, is provided with valve core seal ring 170 in it, makes floating plug 070 coordinate to be formed with described low groove 032 and seal;
As shown in Figure 5, Figure 9, described upper valve base 040 have the first commutation hydraulic fluid port 04A, the second commutation hydraulic fluid port 04B, filler opening 04P and the first return opening 04T, the second return opening 04W, first commutation hydraulic fluid port 04A, second interior circular groove 051 center of circle of commutating hydraulic fluid port 04B, filler opening 04P and the first return opening 04T and fixed spool 050 are on same level axis, and the second return opening 04W is positioned at filler opening 04P vertical direction; Filler opening 04P is positioned at S/2 place on the right side of circular groove 051 center of circle, first commutation hydraulic fluid port 04A, the second commutation hydraulic fluid port 04B are symmetrically distributed in the right left both sides of filler opening 04P, be (r2+r3-S)/2 with filler opening 04P distance, the first return opening 04T is positioned at (r2+r3+S)/2 place on the right side of filler opening 04P; Second return opening 04W is in filler opening 04P vertical direction
place, described first return opening 04T links up oil circuit 041 with the second return opening 04W by the cross in upper valve base and is communicated with, S is the stroke of ball screw assembly 090, r1 is the radius of interior circular groove 051, r2, r3 are respectively internal diameter and the external diameter of outer groove 052, and 2r1>S> (r2+r3-2r1)/2;
As shown in Figure 6, described sleeve 080 is for having the cylinder of inner cavity 081, its front end is closed and is formed boss 082, boss 082 side has outside thread, to be threaded with described tapped hole 021, raised head face has the push-rod hole 083 being axially communicated with inner cavity 081, ball screw assembly 090 is housed in described inner cavity 081 and is connected swivel nut 100, mounting hole 084 is processed with, for being connected and fixed by screw and reducing motor 120 in the right output port of inner cavity 081;
As shown in Figure 7, described ball screw assembly 090 is made up of leading screw 091, ball nut 092, ball bearing guide bushing 093, steel ball 094, left end position limit pin 095, right-hand member position limit pin 096; Described ball nut 092 is for having the second order Step Shaft of axial hole, and its small end has outside thread; On leading screw 091, cover has the ball bearing guide bushing 093 embedding steel ball 094, leading screw 091 passes the axial hole of ball nut 092 together with ball bearing guide bushing 093 and forms Spielpassung, described steel ball 094 coordinates with leading screw 091, leading screw 091 is separately installed with left end position limit pin 095, right-hand member position limit pin 096 close to two ends, left and right, is limited to move to the ball bearing guide bushing 093 embedding steel ball 094;
Described connection swivel nut 100 is second order Step Shaft, is processed with ball-and-socket 101 in its small end, and the large end connecting swivel nut has axial cavity 102, and axial cavity 102 oral area has internal thread 103, to be connected with the small end of ball nut 092;
As shown in Figure 8, described push rod 110 is connected as a single entity by spiro rod section 111, shaft 112 and afterbody bulb 113 and forms; The shaft 112 of push rod 110 passes the push-rod hole 083 of sleeve 080, and the tapped blind hole 035 of spiro rod section 111 and slide block 030 side is threaded, and afterbody bulb 113 is positioned at the ball-and-socket 101 connecting swivel nut 100;
Described reducing motor 120 is connected by screw inner cavity 081 port in described sleeve 080, the motor shaft of reducing motor 120 is connected by key pin with leading screw 091 right-hand member, by leading screw 091, the rotary motion of reducing motor 120 is converted to the straight line motion of slide block 030;
When ball nut 092 move to limit position blocked by left end position limit pin 095 or right-hand member position limit pin 096 time, left end position limit pin 095 or right-hand member position limit pin 096 block ball bearing guide bushing 093 and stop it to do straight line motion, reducing motor 120 works on, because the steel ball 094 in thread pitch cannot continue to do straight line motion, leading screw 091 is made to drive ball bearing guide bushing 093 to do relative slip/stick movement with ball nut 092, ball nut 092 rests on limit position, whole ball screw assembly 090 skids in limit position original place, keeps stroke S.
As shown in Figure 9, in the stroke S of ball screw assembly 090, filler opening 04P is all the time in fixed spool in circular groove, first return opening 04T or the second return opening 04W always has one to be positioned in the outer groove of fixed spool, when fixed spool does straight line motion, realize the first commutation hydraulic fluid port 04A, the second commutation hydraulic fluid port 04B moves between circular groove and outer groove in fixed spool, complete commutation function.
In embodiments of the invention:
Described upper valve base 040 surface has parallel front raised line and rear raised line, forms concave shape cross section, and forward and backward raised line and upper valve base surface intersection location have recessed restraining groove respectively;
First commutation hydraulic fluid port (04A), the second commutation hydraulic fluid port (04B), filler opening (04P) and the first return opening (04T) hydraulic fluid port are fitted with connecting tube 130 respectively, as shown in Figure 10, the pipe shaft of connecting tube 130 has annular seal groove 131 and annular positioning groove 132 from bottom to top successively;
As shown in figure 11, card 140 is rectangular sheet, its side has the position hydraulic fluid port 04A, second that commutates with first respectively and to commutate hydraulic fluid port 04B, filler opening 04P and four bayonet sockets corresponding to the first return opening 04T, after when four connecting tubes 130, plug-in mounting enters four hydraulic fluid ports respectively, card 140 level is injected in the restraining groove on upper valve base 040 surface, blocked the annular positioning groove 132 of four connecting tubes by four bayonet sockets of card 140, then by screw 190, card 140 is fixed on upper valve base 040;
In embodiments of the invention: the stroke S of ball screw assembly 090 is 6mm, the radius r 1 of interior circular groove 051 is 4mm, internal diameter r2, the external diameter r3 of outer groove 052 are respectively 6mm and 8mm, meet the constraint conditio of 2r1>S> (r2+r3-2r1)/2.
The present invention adopts and softly joins hard end face seal form, and slide block seal ring 160 coordinates to be formed with the lower end surface of fixed spool 050 and seals; The upper-end surface of fixed spool 050 has concentric interior circular groove 051 and outer groove 052, forms dual torus sealing surface, coordinates to be formed to seal with the lower end surface of upper valve base 040.Upper valve base 040 is furnished with the first commutation hydraulic fluid port 04A, the second commutation hydraulic fluid port 04B, filler opening 04P and the first return opening 04T, the second return opening 04W.
For realizing the commutation function of valve, in the stroke S of ball screw assembly 090, filler opening 04P is all the time in fixed spool in circular groove, first return opening 04T or the second return opening 04W always has one to be positioned at the outer groove 052 li of fixed spool 050, when fixed spool 050 does straight line motion, realize the first commutation hydraulic fluid port 04A, the second commutation hydraulic fluid port 04B moves between circular groove and outer groove in fixed spool, complete commutation function.Therefore interior circular groove 051 is high-pressure channel (filler opening 04P → the first commutation hydraulic fluid port 04A or second commutation hydraulic fluid port 04B), outer groove 052 is low-pressure channel (the first commutation hydraulic fluid port 04A or second commutation hydraulic fluid port 04B → the first return opening 04T or the second return opening 04W), commutation function (filler opening 04P → the first commutation hydraulic fluid port 04A, the second commutation hydraulic fluid port 04B → the first return opening 04T or the second return opening 04W just can be realized by promoting slide block 030
filler opening 04P → the second commutation hydraulic fluid port 04B, the first commutation hydraulic fluid port 04A → the first return opening 04T or the second return opening 04W).Floating plug 070 is provided with valve core seal ring 170, and valve core seal ring 170 coordinates to be formed with floating plug 070 and seals.Combination disk spring 060 is installed in the cavity of resorption of slide block 030, together with floating plug 070, dynamic compensation is carried out to valve.Slide block 030 is free to slide in supporting base 020.The first commutation hydraulic fluid port 04A that upper valve base 040 is arranged, the second commutation hydraulic fluid port 04B, filler opening 04P and the first return opening 04T all adopt plug-in type to connect.The pipe shaft of connecting tube 130 has annular seal groove 131 and annular positioning groove 132 from bottom to top successively, is respectively used to install seal ring 4 and card 140.Card 140 level injects in the restraining groove on upper valve base 040 surface, the annular positioning groove 132 of four connecting tubes is blocked by four bayonet sockets of card 140, then be fixed on upper valve base 040 by screw by card 140, this installation form is convenient and swift, safe and reliable.
In the present invention, reducing motor 120 and supporting base 020 are connected and fixed by sleeve 080, by ball screw assembly 090, the rotary motion of reducing motor 120 are converted to the straight line motion of slide block 030.Reducing motor 120 is the Low speed electric motor with speed reducer, provides the dynamic torque needed for system.
The stroke of ball screw assembly is fixed journey system.When ball nut 092 move to limit position blocked by left end position limit pin 095 or right-hand member position limit pin 096 time, left end position limit pin 095 or right-hand member position limit pin 096 block ball bearing guide bushing 093 and stop it to do straight line motion, reducing motor 120 works on, because the steel ball 094 in thread pitch cannot continue to do straight line motion, leading screw 091 is made to drive ball bearing guide bushing 093 to do relative slip/stick movement with ball nut 092, ball nut 092 rests on limit position, and whole ball screw assembly skids in limit position original place.The afterbody bulb 113 of push rod 110, match with the ball-and-socket 101 being connected swivel nut 100 front end, form self-align connection, ball screw assembly is owing to manufacture and the factor such as installation may exist certain nonconcentricity, promote just to have lateral force when slide block 030 moves at ball nut 092, according to be threaded etc., the form that is rigidly connected just may be stuck because of lateral force, what adopt bulb and ball-and-socket to match is self-alignly connected, and can avoid causing steering force excessive because of lateral force, even occur stuck phenomenon.
Claims (2)
1. a flat closed type selector valve, comprise lower valve base (010), supporting base (020), slide block (030), upper valve base (040), fixed spool (050), disc spring (060), floating plug (070), sleeve (080), ball screw assembly (090), connect swivel nut (100), push rod (110), reducing motor (120), it is characterized in that:
Described lower valve base (010) is placed with supporting base (020), described supporting base (020) is rectangle frame, it is while have tapped hole (021), for coupling sleeve, slide block (030) is placed in supporting base (020) and also can be free to slide, upper valve base (040) is covered in supporting base (020) and slide block (030) upper-end surface, lower valve base (010), supporting base (020) and upper valve base (040) are fixed by Stud connection, are closed by slide block (030);
Described slide block (030) is rectangular cubic, its upper-end surface has circular upper groove (031), its lower end surface has circular low groove (032), upper groove (031) is coaxially also communicated with by axial intercommunicating pore (033) with the center of circle of low groove (032), upper groove (031) bottom has the circular groove (034) concentric with axial intercommunicating pore (033), is provided with slide block seal ring (160) in it; The side of slide block (030) has tapped blind hole (035), for being threaded with push rod;
Described fixed spool (050) is disc, is embedded in described upper groove (031), and the upper-end surface of fixed spool (050) has concentric interior circular groove (051) and outer groove (052);
Disc spring (060) and floating plug (070) are housed in described low groove (032) from top to bottom, and disc spring (060) and floating plug (070) carry out dynamic compensation together; Floating plug (070) is for cylindrical, there is the axial hole (071) along its axis, floating plug (070) excircle has annular groove (072), valve core seal ring (170) is installed in it, makes floating plug (070) coordinate to be formed with described low groove (032) and seal;
Described upper valve base (040) have the first commutation hydraulic fluid port (04A), the second commutation hydraulic fluid port (04B), filler opening (04P) and the first return opening (04T), the second return opening (04W), first commutation hydraulic fluid port (04A), the second commutation hydraulic fluid port (04B), filler opening (04P) and the first return opening (04T) are on same level axis with interior circular groove (051) center of circle of fixed spool (050), and the second return opening (04W) is positioned at filler opening (04P) vertical direction; Filler opening (04P) is positioned at S/2 place on the right side of circular groove (051) center of circle, first commutation hydraulic fluid port (04A), the second commutation hydraulic fluid port (04B) are symmetrically distributed in the right left both sides of filler opening (04P), be (r2+r3-S)/2 with filler opening (04P) distance, the first return opening (04T) is positioned at (r2+r3+S)/2 place, filler opening (04P) right side; Second return opening (04W) is in filler opening (04P) vertical direction
place, described first return opening (04T) is linked up oil circuit (041) with the second return opening (04W) by the cross in upper valve base and is communicated with, S is the stroke of ball screw assembly (090), r1 is the radius of interior circular groove (051), r2, r3 are respectively internal diameter and the external diameter of outer groove (052), and 2r1>S> (r2+r3-2r1)/2;
Described sleeve (080) is for having the cylinder of inner cavity (081), its front end is closed and is formed boss (082), boss (082) side has outside thread, to be threaded with described tapped hole (021), raised head face has the push-rod hole (083) being axially communicated with inner cavity (081), ball screw assembly (090) is housed in described inner cavity (081) and is connected swivel nut (100);
Described ball screw assembly (090) is made up of leading screw (091), ball nut (092), ball bearing guide bushing (093), steel ball (094), left end position limit pin (095), right-hand member position limit pin (096); Described ball nut (092) is for having the second order Step Shaft of axial hole, and its small end has outside thread; The upper cover of leading screw (091) has the ball bearing guide bushing (093) of embedding steel ball (094), leading screw (091) forms Spielpassung together with ball bearing guide bushing (093) through the axial hole of ball nut (092), described steel ball (094) coordinates with leading screw (091), leading screw (091) is separately installed with left end position limit pin (095), right-hand member position limit pin (096) close to two ends, left and right, to be limited ball bearing guide bushing (093) motion embedding steel ball (094);
Described connection swivel nut (100) is second order Step Shaft, ball-and-socket (101) is processed with in its small end, the large end connecting swivel nut has axial cavity (102), axial cavity (102) oral area has internal thread, to be connected with the small end of ball nut (092);
Described push rod (110) is connected as a single entity by spiro rod section (111), shaft (112) and afterbody bulb (113) and forms; The shaft (112) of push rod (110) is through the push-rod hole (083) of sleeve (080), the tapped blind hole (035) of spiro rod section (111) and slide block (030) side is threaded, and afterbody bulb (113) is positioned at the ball-and-socket (101) connecting swivel nut (100);
Described reducing motor (120) is connected by screw inner cavity (081) port in described sleeve (080), the motor shaft of reducing motor (120) is connected by key pin with leading screw (091) right-hand member, by leading screw (091), the rotary motion of reducing motor (120) is converted to the straight line motion of slide block (030);
When ball nut (092) move to limit position blocked by left end position limit pin (095) or right-hand member position limit pin (096) time, left end position limit pin (095) or right-hand member position limit pin (096) block ball bearing guide bushing (093) and stop it to do straight line motion, reducing motor (120) works on, because the steel ball (094) in thread pitch cannot continue to do straight line motion, leading screw (091) is made to drive ball bearing guide bushing (093) to do relative slip/stick movement with ball nut (092), ball nut (092) rests on limit position, whole ball screw assembly skids in limit position original place, keep stroke S,
In the stroke S of ball screw assembly (090), filler opening (04P) is all the time in the interior circular groove of fixed spool (050), first return opening (04T) or the second return opening (04W) always have one to be positioned in the outer groove of fixed spool, when fixed spool does straight line motion, realize the first commutation hydraulic fluid port (04A), the second commutation hydraulic fluid port (04B) is moved between circular groove and outer groove in fixed spool, complete commutation function.
2. flat closed type selector valve as claimed in claim 1, is characterized in that:
Described upper valve base (040) surface has parallel front raised line and rear raised line, forms concave shape cross section, and forward and backward raised line and upper valve base surface intersection location have recessed restraining groove respectively;
First commutation hydraulic fluid port (04A), the second commutation hydraulic fluid port (04B), filler opening (04P) and the first return opening (04T) are fitted with connecting tube (130) respectively, and the pipe shaft of connecting tube (130) has annular seal groove (131) and annular positioning groove (132) from bottom to top successively;
Card (140) is rectangular sheet, its side has position and to commutate with first respectively hydraulic fluid port (04A), second commutation hydraulic fluid port (04B), four bayonet sockets of filler opening (04P) and the first return opening (04T) correspondence, after when four connecting tubes (130), plug-in mounting enters four hydraulic fluid ports respectively, card (140) level is injected in the restraining groove on upper valve base (040) surface, the annular positioning groove (132) of four connecting tubes is blocked by four bayonet sockets of card (140), then by screw, card (140) is fixed on upper valve base (040).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410589335.1A CN104344017B (en) | 2014-10-28 | 2014-10-28 | A kind of flat closed type reversal valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410589335.1A CN104344017B (en) | 2014-10-28 | 2014-10-28 | A kind of flat closed type reversal valve |
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| CN104344017A true CN104344017A (en) | 2015-02-11 |
| CN104344017B CN104344017B (en) | 2016-05-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896140A (en) * | 2015-06-12 | 2015-09-09 | 张元晖 | Oil-gas linkage switching valve and working mode thereof |
| CN106763902A (en) * | 2017-01-10 | 2017-05-31 | 重庆超力高科技股份有限公司 | Valve element and valve |
| CN107269918A (en) * | 2017-07-04 | 2017-10-20 | 北京工业大学 | A kind of low water slug tests direct-drive type high flow directional control valve |
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| CN108757183A (en) * | 2018-06-29 | 2018-11-06 | 江苏金陵智造研究院有限公司 | A kind of novel turbojet engine fuel regulator valve |
| CN108942089A (en) * | 2017-05-23 | 2018-12-07 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of small bicyclic processing method with end face seal structure |
| CN109854781A (en) * | 2019-03-22 | 2019-06-07 | 合肥天鹅制冷科技有限公司 | A kind of four-way commutation air-valve |
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| CN114935019A (en) * | 2022-05-19 | 2022-08-23 | 衡水中科衡发动力装备有限公司 | Valve core of high-pressure fluid quick four-way reversing valve and preparation method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4023593A (en) * | 1976-02-17 | 1977-05-17 | The Rucker Company | Valve and control therefor |
| US4473095A (en) * | 1981-02-12 | 1984-09-25 | Herion-Werke Kg | Hydraulic valve |
| CN2505632Y (en) * | 2001-04-29 | 2002-08-14 | 山东工程机械厂 | Pilot-controlled multi-way reversing valve |
| CN1434219A (en) * | 2003-02-21 | 2003-08-06 | 华中科技大学 | Three-position three-way hydraulic change valve |
| CN101173609A (en) * | 2007-10-24 | 2008-05-07 | 中国航天科技集团公司烽火机械厂 | Multilevel control valve |
| US20080115848A1 (en) * | 2005-02-11 | 2008-05-22 | Peter Bruck | Valve, Especially Proportional Pressure Control Valve |
| CN202327308U (en) * | 2011-11-17 | 2012-07-11 | 沈协峰 | Digital proportional valve |
| CN102720843A (en) * | 2012-06-04 | 2012-10-10 | 西安交通大学 | Large-diameter proportional pneumatic valve directly driven by alternating-current servo motor |
-
2014
- 2014-10-28 CN CN201410589335.1A patent/CN104344017B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4023593A (en) * | 1976-02-17 | 1977-05-17 | The Rucker Company | Valve and control therefor |
| US4473095A (en) * | 1981-02-12 | 1984-09-25 | Herion-Werke Kg | Hydraulic valve |
| CN2505632Y (en) * | 2001-04-29 | 2002-08-14 | 山东工程机械厂 | Pilot-controlled multi-way reversing valve |
| CN1434219A (en) * | 2003-02-21 | 2003-08-06 | 华中科技大学 | Three-position three-way hydraulic change valve |
| US20080115848A1 (en) * | 2005-02-11 | 2008-05-22 | Peter Bruck | Valve, Especially Proportional Pressure Control Valve |
| CN101173609A (en) * | 2007-10-24 | 2008-05-07 | 中国航天科技集团公司烽火机械厂 | Multilevel control valve |
| CN202327308U (en) * | 2011-11-17 | 2012-07-11 | 沈协峰 | Digital proportional valve |
| CN102720843A (en) * | 2012-06-04 | 2012-10-10 | 西安交通大学 | Large-diameter proportional pneumatic valve directly driven by alternating-current servo motor |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896140A (en) * | 2015-06-12 | 2015-09-09 | 张元晖 | Oil-gas linkage switching valve and working mode thereof |
| CN106763902A (en) * | 2017-01-10 | 2017-05-31 | 重庆超力高科技股份有限公司 | Valve element and valve |
| CN106763902B (en) * | 2017-01-10 | 2023-08-15 | 重庆超力高科技股份有限公司 | Valve core and valve |
| CN108942089A (en) * | 2017-05-23 | 2018-12-07 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of small bicyclic processing method with end face seal structure |
| CN107269918B (en) * | 2017-07-04 | 2019-02-12 | 北京工业大学 | A kind of low water slug tests direct-drive type high flow directional control valve |
| CN107269918A (en) * | 2017-07-04 | 2017-10-20 | 北京工业大学 | A kind of low water slug tests direct-drive type high flow directional control valve |
| CN108563992A (en) * | 2018-03-13 | 2018-09-21 | 苏州奥科德瑞智能科技有限公司 | A kind of vision survey system based on recognition of face |
| CN108757183A (en) * | 2018-06-29 | 2018-11-06 | 江苏金陵智造研究院有限公司 | A kind of novel turbojet engine fuel regulator valve |
| CN109854781A (en) * | 2019-03-22 | 2019-06-07 | 合肥天鹅制冷科技有限公司 | A kind of four-way commutation air-valve |
| CN109854781B (en) * | 2019-03-22 | 2024-01-16 | 合肥天鹅制冷科技有限公司 | Four-way reversing air valve |
| CN110195726A (en) * | 2019-05-07 | 2019-09-03 | 湖州机床厂有限公司 | A kind of prefill valve, prefill valve mounting structure and hydraulic press |
| CN110195726B (en) * | 2019-05-07 | 2024-02-13 | 湖州机床厂有限公司 | Charging valve, charging valve mounting structure and hydraulic machine |
| WO2022242719A1 (en) * | 2021-05-20 | 2022-11-24 | 浙江盾安人工环境股份有限公司 | Reversible electromagnetic valve |
| CN114935019A (en) * | 2022-05-19 | 2022-08-23 | 衡水中科衡发动力装备有限公司 | Valve core of high-pressure fluid quick four-way reversing valve and preparation method thereof |
| CN114935019B (en) * | 2022-05-19 | 2024-10-15 | 衡水中科衡发动力装备有限公司 | Valve core of high-pressure fluid quick four-way reversing valve and preparation method thereof |
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