CN206329791U - Pressure compensation electricity ratio seat valve - Google Patents
Pressure compensation electricity ratio seat valve Download PDFInfo
- Publication number
- CN206329791U CN206329791U CN201621273400.0U CN201621273400U CN206329791U CN 206329791 U CN206329791 U CN 206329791U CN 201621273400 U CN201621273400 U CN 201621273400U CN 206329791 U CN206329791 U CN 206329791U
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- Prior art keywords
- valve core
- poppet valve
- valve housing
- main valve
- poppet
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Abstract
The utility model discloses a kind of electric ratio seat valve of pressure compensation, it is made up of proportion electro-magnet component and seat valve assemblies, the seat valve assemblies include main valve housing and the poppet valve core in main valve housing, the front portion of the flux sleeve is connected with main valve housing, the front end of the main valve housing is provided with oil inlet, the side of the main valve housing is provided with oil-out, the front portion of the poppet valve core is provided with the conical head coordinated with oil inlet, the rear portion of the poppet valve core stretches into ante-chamber and is connected with back-moving spring, the rear portion of the poppet valve core is provided with the radial direction pressure guide hole connected with ante-chamber, the poppet valve core offers the axial pressure guide hole for making poppet valve core front end be connected with radial direction pressure guide hole vertically.The utility model is simple in construction, compact conformation, and pressure is high, and pollution resistance is strong, and control accuracy is high.
Description
Technical field
The utility model is related to valve, and in particular to pressure compensation electricity ratio seat valve.
Background technology
At present in Hydraulic Industry, electric proportional flow control valve is used generally in the speed of electrical modulation executing agency；Oil circuit is fast
Speed blocks pressurize with Solenoid seated valve to realize.Use cooperatively to realize execution machine with Solenoid seated valve series connection by electric proportional flow control valve
The fast pole that works at a slow speed of structure stops keeping load.Therefore, complex structure, high cost, and because electric proportional flow control valve is guiding valve
Structure, oil resistant pollution ability, control accuracy is not high.
Utility model content
Technical problem to be solved in the utility model is just to provide a kind of electric ratio seat valve of pressure compensation, is reached with a valve
To the function of electric proportional flow control valve series connection Solenoid seated valve, simplify structure, reduce cost.
In order to solve the above technical problems, the utility model is adopted the following technical scheme that：Pressure compensation electricity ratio seat valve, by than
Example electromagnet assembly and seat valve assemblies composition, the proportion electro-magnet component include flux sleeve and on the outside of flux sleeve middle part
Coil, the front portion of the flux sleeve, which is provided with rear side of ante-chamber, the middle part of the flux sleeve, to be provided with before back cavity, the middle part of the flux sleeve
Side is communicated with the endoporus of ante-chamber and back cavity, the endoporus being equipped with valve element push rod, the back cavity to push away provided with driving valve element
Bar action armature, the seat valve assemblies include main valve housing and the poppet valve core in main valve housing, the flux sleeve front portion with
Main valve housing is connected, and the front end of the main valve housing is provided with oil inlet, and the side of the main valve housing is provided with oil-out, the poppet valve core
Front portion is provided with the conical head coordinated with oil inlet, and it is close that the middle part of the poppet valve core is provided with the slip for sliding back and forth sealing with main valve housing
Section is sealed, the rear portion of the poppet valve core stretches into ante-chamber and is connected with back-moving spring, the rear portion of the poppet valve core is provided with to be connected with ante-chamber
Radial direction pressure guide hole, the poppet valve core offers the axial pressure guide hole for making poppet valve core front end be connected with radial direction pressure guide hole vertically.
It is preferred that, the poppet valve core protrudes head in the front end of conical head provided with tubular, and the tubular protrudes the front end edge of head
Circumferentially it is evenly equipped with several rectangular thin-wall throttling channels.
It is preferred that, the diameter of the tubular protrusion head is equal with poppet valve core rearward diameter.
It is preferred that, the rear portion of the main valve housing is provided with sealing shroud, and the section that is slidingly sealed of the poppet valve core is provided with sealing
Enclose and be slidingly sealed cooperation with sealing shroud, the poppet valve core is being slidingly sealed on front side of section provided with the gear coordinated with sealing shroud front end
Step.
It is preferred that, the endoporus rear portion of the main valve housing is provided with positioning step, and the rear portion of the sealing shroud is provided with locating flange,
The front end face of the big locating flange is positioned on positioning table terrace.
It is preferred that, the endoporus of the main valve housing is provided with the case where poppet valve core closes oil inlet state and taper on rear side of oil inlet
The sealed step that head conical surface seal coordinates.
It is preferred that, the rear end of the poppet valve core is provided with snap ring, and the back-moving spring is arranged on snap ring and sealing shroud rear end
Between face.
The technical solution adopted in the utility model, proportion electro-magnet component and seat valve assemblies is combined, with control electric current
Change it is big, poppet valve core control opening becomes low discharge also with diminishing；When current load is to maximum, poppet valve core is closed, and load is protected
Hold, can control executing agency work at a slow speed soon pole stop keep load, with a valve reached proportional flow control valve connect electromagnetism
The function of seat valve, simplifies structure, reduces cost.In addition, employing pressure compensation structure, inlet pressure oil passes through pilot
Hole is delivered to poppet valve core rear end, poppet valve core rear and front end is pressurized and balances, and therefore, the flow that poppet valve core is opened is only by ratio electromagnetism
The influence of power size is pushed, not changed by load pressure is influenceed.
To sum up, the electric ratio seat valve of pressure-compensated of the present utility model is a kind of simple in construction, and standardization is high, and structure is tight
Gather, pressure is high, pollution resistance is strong, and control accuracy is high, low-cost electric proportional valve.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and detailed description：
Fig. 1 is structural representation of the present utility model；
Fig. 2 is poppet valve core front-end architecture schematic diagram；
Fig. 3 is the distribution schematic diagram of rectangular thin-wall throttling channel；
Fig. 4 is the hydraulic system principle figure of the electric ratio seat valve application of pressure compensation；
Fig. 5 is existing electric proportional flow control valve changes in flow rate schematic diagram；
Fig. 6 is the electric ratio seat valve changes in flow rate schematic diagram of pressure compensation of the present utility model.
Embodiment
The electric ratio seat valve of pressure compensation of the present utility model is one kind between Normal hydraulic valve and electrohydraulic servo valve
Hydraulic control valve, the occasions such as the higher occasion of velocity accuracies, the occasion of load change and load needs holding are controlled used in some.
Such as pressure vessel fatigue life test machine, hydraulic elevator motion and control system, the control of Metal Cutting Machine Tool working table movement, roll
The pressure of steel machine and control system, hydraulic press, bending machine, plastic injection machine etc..
As depicted in figs. 1 and 2, the electric ratio seat valve of pressure compensation, 1 is constituted by proportion electro-magnet component 2 and seat valve assemblies.Its
In, the proportion electro-magnet component 2 is included before flux sleeve 21 and the coil 22 on the outside of flux sleeve middle part, the flux sleeve
Portion, which is provided with rear side of ante-chamber, the middle part of the flux sleeve, is provided with back cavity, and ante-chamber is communicated with front side of the middle part of the flux sleeve with after
The armature 24 provided with the action of driving valve element push rod 23 in valve element push rod 23, the back cavity is equipped with the endoporus of chamber, the endoporus,
Coil 22 is locked after being mounted on flux sleeve 21 by locking cap 26；The emergent push rod 25 of the foot section brought of flux sleeve 21.Seat valve assemblies 1 are wrapped
Main valve housing 11 and the poppet valve core 12 in main valve housing are included, the front portion of the flux sleeve is connected with main valve housing 11, main valve housing rear end
Intraoral and sealed by sealing ring in flux sleeve nose threads provided with threaded engagement, after the energization of coil 22, armature 24 is in magnetic conduction
The endoporus start of set 21, poppet valve core 12 is promoted by valve element push rod 23.
Wherein, the front end of main valve housing 11 is provided with oil inlet 111, and the side of the main valve housing is provided with oil-out 112, the cone
The front portion of valve element 12 is provided with the conical head 122 coordinated with oil-feed metastomium valve port, and ante-chamber and company are stretched into the rear portion of the poppet valve core
It is connected to back-moving spring 14.
As shown in Figures 2 and 3, poppet valve core 12 is in the front end of conical head provided with tubular protrusion first 121, and the tubular protrudes head
Front end be evenly distributed several rectangular thin-wall throttling channels 1211, and the diameter and poppet valve core rearward diameter of tubular protrusion head
It is equal so that after pressure conduction poppet valve core rear and front end be pressurized balance.Fluid is first throttled in rectangular thin-wall throttling channel, then
Throttled again at valve port, can accurately adjust the size of flow, make the linear change of control flow；The cone of conical head 122
Face sealing surface can end fluid flowing in maximum current, realize that load is kept.
As shown in figure 5, existing electric proportional flow control valve, without pressure compensation structure, flow is influenceed by the change loaded, with
The change for load is big, and flow diminishes.The balance in order that rear and front end of poppet valve core 12 is pressurized, using pressure compensation structure, wherein,
The rear portion of poppet valve core 12 is provided with the radial direction pressure guide hole 102 connected with ante-chamber, and the poppet valve core is offered vertically to be made before poppet valve core
Hold the axial pressure guide hole 101 connected with radial direction pressure guide hole.The pressure oil of oil inlet 111 is delivered to after poppet valve core by above-mentioned pressure guide hole
End, makes poppet valve core rear and front end be pressurized and balances.Therefore, as shown in fig. 6, the flow of poppet valve core opening is only by proportion electro-magnet thrust
Influence, not changed by load pressure is influenceed.And as a result of pressure-compensated structure, the speed of actuator is not with load
Change and change, control accuracy is high.
As shown in figure 4, pump extracts hydraulic oil out, two road binders are separated, the first oil cylinder is flowed to respectively, the second oil cylinder flows to
One oil cylinder from the electric oil-feed of ratio seat valve oil inlet 111 of pressure-compensated, flow through the rectangular thin-wall throttling channel of poppet valve core front end
1211 is fuel-displaced to oil-out 112, by the size of the electric current of control coil 22 come the speed of control cylinder, when control electric current is increased
When, valve opening diminishes, and flow is also with diminishing, and oil cylinder slows, because the front end of poppet valve core 12 employs rectangular thin-wall throttling
Groove 1211, the change for making control flow linear；When the load of the first oil cylinder changes, pressure guide hole is oil inlet on poppet valve core
111 pressure conduction makes the end stress balance of poppet valve core 12 2, the openings of sizes of valve is only by the shadow of electromagnetic force to the poppet valve core other end
Ring, it is ensured that oil cylinder speed is not influenceed by load change；When the electric current of coil 22 is maximum, the close port of poppet valve core 12 is realized
Load is kept.During the second oil cylinder start of an other branch road, what it is due to the first oil cylinder branch road is the electric ratio seat of pressure-compensated
Valve, is two-way stop, and the second oil cylinder start does not influence the load of the first oil cylinder to keep, and during control, oil inlet allows have pressure
In the presence of.
In addition, the middle part of the poppet valve core is provided with and main valve housing slides back and forth sealing is slidingly sealed section, section is slidingly sealed
Equal with poppet valve core rearward diameter, the rear portion of the main valve housing 11 is provided with sealing shroud 13, and the poppet valve core is slidingly sealed section
Be slidingly sealed cooperations provided with sealing ring and with sealing shroud, the poppet valve core be slidingly sealed on front side of section provided with and sealing shroud front end
The gear step of cooperation, main valve housing 11 forms a valve pocket connected with oil inlet 111 and oil-out 112 on front side of sealing shroud
Chamber.Poppet valve core 12 loaded onto and be coupled to after sealing ring on main valve housing, then the interference of sealing shroud 13 is pressed on people's main valve housing.
The endoporus rear portion of the main valve housing is provided with positioning step 114, and the rear portion of the sealing shroud is provided with locating flange 131,
The front end face of the locating flange is positioned on positioning table terrace.The endoporus of the main valve housing is provided with cone valve on rear side of oil inlet
Core closes round wires where the sealed step 113 coordinated under oil inlet state with conical head conical surface seal, sealed step right-angled apices
Form seal line.The rear end of the poppet valve core is provided with snap ring 15, and the back-moving spring is arranged on snap ring and sealing shroud rear end face
Between.
Claims (7)
1. pressure compensation electricity ratio seat valve, it is characterised in that：It is made up of proportion electro-magnet component and seat valve assemblies, the ratio electricity
Magnet assemblies include flux sleeve and the coil on the outside of flux sleeve middle part, and the front portion of the flux sleeve is provided with ante-chamber, described to lead
The endoporus that ante-chamber and back cavity are communicated with front side of back cavity, the middle part of the flux sleeve, the endoporus are provided with rear side of the middle part of magnetosheath
The armature provided with driving valve element putter action in valve element push rod, the back cavity is inside equipped with, the seat valve assemblies include main valve housing
And the poppet valve core in main valve housing, the front portion of the flux sleeve is connected with main valve housing, and the front end of the main valve housing is provided with oil-feed
Mouthful, the side of the main valve housing is provided with oil-out, and the front portion of the poppet valve core is provided with the conical head coordinated with oil inlet, the cone
The middle part of valve element is provided with the section that is slidingly sealed that sealing is slid back and forth with main valve housing, and the rear portion of the poppet valve core is stretched into ante-chamber and connected
There is back-moving spring, the rear portion of the poppet valve core is provided with the radial direction pressure guide hole connected with ante-chamber, and the poppet valve core is offered vertically
The axial pressure guide hole for making poppet valve core front end be connected with radial direction pressure guide hole.
2. the electric ratio seat valve of pressure compensation according to claim 1, it is characterised in that：The poppet valve core is before conical head
Head is protruded in end provided with tubular, and the front end of the tubular protrusion head has been evenly distributed several rectangular thin-wall throttling channels.
3. the electric ratio seat valve of pressure compensation according to claim 2, it is characterised in that：The diameter of tubular protrusion head with
Poppet valve core rearward diameter is equal.
4. the electric ratio seat valve of pressure compensation according to claim 2, it is characterised in that：The rear portion of the main valve housing is provided with
Sealing shroud, the section that is slidingly sealed of the poppet valve core is provided with sealing ring and is slidingly sealed cooperation with sealing shroud, and the poppet valve core exists
It is slidingly sealed the gear step for being provided with and coordinating with sealing shroud front end on front side of section.
5. the electric ratio seat valve of pressure compensation according to claim 4, it is characterised in that：The endoporus rear portion of the main valve housing is set
There is positioning step, the rear portion of the sealing shroud is provided with locating flange, and the front end face of the locating flange is positioned at positioning table terrace
On.
6. the electric ratio seat valve of pressure compensation according to claim 4, it is characterised in that：The endoporus of the main valve housing is in oil-feed
The sealed step coordinated in the case where poppet valve core closes oil inlet state with conical head conical surface seal is provided with rear side of mouthful.
7. the electric ratio seat valve of pressure compensation according to claim 4, it is characterised in that：The rear end of the poppet valve core is provided with
Snap ring, the back-moving spring is arranged between snap ring and sealing shroud rear end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621273400.0U CN206329791U (en) | 2016-11-24 | 2016-11-24 | Pressure compensation electricity ratio seat valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621273400.0U CN206329791U (en) | 2016-11-24 | 2016-11-24 | Pressure compensation electricity ratio seat valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206329791U true CN206329791U (en) | 2017-07-14 |
Family
ID=59288020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621273400.0U Withdrawn - After Issue CN206329791U (en) | 2016-11-24 | 2016-11-24 | Pressure compensation electricity ratio seat valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206329791U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641386A (en) * | 2016-11-24 | 2017-05-10 | 浙江华益精密机械股份有限公司 | Pressure compensation electric proportional seat valve |
| CN107883051A (en) * | 2017-11-25 | 2018-04-06 | 宁波文泽机电技术开发有限公司 | Inverse proportion three-way flowrate valve |
| CN107989844A (en) * | 2017-11-29 | 2018-05-04 | 宁波文泽机电技术开发有限公司 | A kind of leakage-free pressure compensation electromagnetic proportioning valve |
-
2016
- 2016-11-24 CN CN201621273400.0U patent/CN206329791U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641386A (en) * | 2016-11-24 | 2017-05-10 | 浙江华益精密机械股份有限公司 | Pressure compensation electric proportional seat valve |
| CN107883051A (en) * | 2017-11-25 | 2018-04-06 | 宁波文泽机电技术开发有限公司 | Inverse proportion three-way flowrate valve |
| CN107883051B (en) * | 2017-11-25 | 2019-05-14 | 江苏四达重工有限公司 | Inverse proportion three-way flowrate valve |
| CN107989844A (en) * | 2017-11-29 | 2018-05-04 | 宁波文泽机电技术开发有限公司 | A kind of leakage-free pressure compensation electromagnetic proportioning valve |
| CN107989844B (en) * | 2017-11-29 | 2019-08-02 | 凯文斯流体控制(江苏)有限公司 | A kind of leakage-free pressure compensation electromagnetic proportioning valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170714 Effective date of abandoning: 20190611 |
|
| AV01 | Patent right actively abandoned |