CN104763820B - Two-position three-way valve and vibration isolation system with same - Google Patents
Two-position three-way valve and vibration isolation system with same Download PDFInfo
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- CN104763820B CN104763820B CN201510111540.1A CN201510111540A CN104763820B CN 104763820 B CN104763820 B CN 104763820B CN 201510111540 A CN201510111540 A CN 201510111540A CN 104763820 B CN104763820 B CN 104763820B
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- Prior art keywords
- valve
- passage
- gas outlet
- air
- lower cover
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Classifications
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
Abstract
The invention discloses a two-position three-way valve and a vibration isolation system with the same and belongs to the technical field of valves. The valve comprises a valve body lower cover, a valve sleeve fixed in the valve body lower cover and a valve core arranged in the valve sleeve in a sliding mode. An air inlet and an air outlet which are staggered in position are formed in the side of the valve body lower cover. A first air vent and a second air vent are formed in the corresponding positions of the air inlet and the air outlet respectively. An exhaust port is formed in the upper surface of the valve core, a first ventilation groove is formed in the circumference of the side of the valve core, and the height of the first ventilation groove is larger than the distance between the first air vent and the second air vent. The height of a lower shaft shoulder of the valve core is identical to the height of the second air vent. By means of the system, switching between different states can be achieved by moving the valve core for small travel vertically, and accordingly, the adjusting accuracy is high.
Description
Technical field
The present invention relates to valve technology field, particularly relates to a kind of two position three-way valve and the vibration isolation with the two position three-way valve
System.
Background technology
Both at home and abroad in precision instrument industry, air spring is a kind of vibration isolating mechanism of the vertical direction being widely used, its
With the outstanding advantages such as manufacture simple, the with low cost and anti-vibration performance of processing is good, but it is normal using being with height adjusting valve
Inseparable, when load changes or has external disturbance, the working depth of air spring changes, height adjusting valve control
Air spring carries out inflation/deflation operation makes it rapidly be returned to original working depth position.
At present, the height adjusting valve being much currently in use all is very outstanding adjusting means, but its degree of regulation is very
The more accurate instrument needs of hardly possible satisfaction, such as the VM131 series of height regulating valves of SMC companies of Japan, also can be by some machineries
Structure design realizes two-position three way function, but its after a number of uses valve element must move 1/10th millimeters of ranks (± 0.1~
± 0.3mm) the stroke switching that could realize between different conditions, directly affects the degree of regulation of regulating valve.
The content of the invention
The present invention provides a kind of high two position three-way valve of degree of regulation and the vibrating isolation system with the two position three-way valve.
To solve above-mentioned technical problem, it is as follows that the present invention provides technical scheme：
A kind of two position three-way valve, including valve body lower cover, the valve pocket that is fixedly installed on inside the valve body lower cover and slide
The valve element being arranged on inside the valve pocket, wherein：
The side of the valve body lower cover is provided with the air inlet and gas outlet being staggeredly located；
The side of the valve pocket position corresponding with the air inlet and gas outlet be respectively arranged with the first passage and
Second passage；
The upper surface of the valve element is provided with air vent, and the side of the valve element circumferentially offers the first vent grooves, institute
The height of the first vent grooves is stated more than first passage and the spacing of the second passage, the height of the lower shaft shoulder of the valve element
Degree is highly identical with second passage；
When the valve element is in first position in the valve pocket, the air inlet and gas outlet communicate realization inflation；Institute
When stating valve element and being in the second position in the valve pocket, the gas outlet and air vent communicate realization and deflate；The valve element is in institute
State in valve pocket in three positions when, the air inlet, gas outlet and air vent are not connected.
Further, arrange between the valve core inside and the valve body lower cover and have elastic component.
Further, it is provided with the groove being engaged with the flexible member on lid under the valve body.
Further, the valve pocket is bonded in inside the valve body lower cover by fluid sealant, the valve pocket, valve element and valve body
Gap cooperation is between lower cover.
Further, height of the height of the air inlet higher than the gas outlet.
Further, position distribution corresponding with first passage and the second passage in the circumference of the valve pocket
Offer the second vent grooves and the 3rd vent grooves.
Further, the material of the valve element is hard material.
A kind of vibrating isolation system, including above-mentioned two position three-way valve.
Further, the vibrating isolation system also includes air spring, and the air inlet of the two position three-way valve is used to connect pressure
The source of the gas of contracting gas, gas outlet connects the air spring, and air vent is used to connect air.
The invention has the advantages that：
Compared with prior art, valve pocket is installed to valve body by valve body lower cover of the invention as the fundamental parts of assembly
Inside lower cover, then valve element is loaded in valve pocket, during installation, by the first passage and the second passage respectively with air inlet and go out
QI KOU is aligned.When valve element is in first position in the valve pocket, the lower shaft shoulder and second passage of valve element stagger, and now the
One passage and the second passage cannot ventilate, obstructed between gas outlet and air inlet, and gas outlet and air vent communicate realization and put
Gas；When valve element reaches the second position from first position slide downward certain distance, because the height of the first vent grooves is more than
The spacing of the first passage and the second passage, now after the small stroke of valve element slide downward, the first passage and second leads to
Pore can realize ventilation, and gas outlet and air vent communicate realization and deflate；When valve element is located between first position and the second position
The 3rd position, i.e. the lower shaft shoulder of valve element is just aligned with gas outlet, due to the height and the height of the second passage of the lower shaft shoulder
It is identical, therefore now air inlet, gas outlet and air vent are not connected, the present invention is in a kind of state of dynamic equilibrium.
The present invention ensure the valve core outer surface and the valve pocket endoporus cylindricity it is good under the premise of, by valve element outside
Dimensional tolerance between footpath and valve pocket diameter of bore coordinates makes the presence of sufficiently small gap therebetween, in this gap under can rise
Effect to valve seal also can guarantee that valve element can be slided up and down inside valve pocket.
The present invention is in the lower axle shoulder height degree for ensureing the valve element and the basic size identical of the second passage height
Under the premise of, a small upper deviation and lower deviation is separately designed to the former and the latter, made by cooperating for dimensional tolerance
The upper and lower micro-stroke of valve element one of (mobile percentage grade) can be achieved with the switching between different conditions, make the present invention keep compared with
High degree of regulation.
Description of the drawings
Fig. 1 is the primary structure sectional view of the two position three-way valve of the present invention；
Fig. 2 is the blast sectional view of the primary structure of the two position three-way valve of the present invention；
Fig. 3 is the sectional view of the primary structure of the inflatable and deflatable state of the two position three-way valve of the present invention；
Fig. 4 is the sectional view of the position dynamic balance state critical piece of two position three-way valve the 3rd of the present invention；
Fig. 5 is the schematic diagram of one embodiment of the two position three-way valve of the present invention.
Specific embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
On the one hand, the present invention provides a kind of two position three-way valve, as shown in Figures 1 to 5, including valve body lower cover 3, is fixedly installed
Valve pocket 2 inside valve body lower cover 3 and the valve element 1 being slidably arranged in inside valve pocket 2, wherein：
The side of valve body lower cover 3 is provided with the air inlet 11 and gas outlet 12 being staggeredly located；
The side of valve pocket 2 position corresponding with air inlet 11 and gas outlet 12 is respectively arranged with the first passage 14 and
Two passages 6；
The upper surface of valve element 1 is provided with air vent 13, and the side of valve element 1 circumferentially offers the first vent grooves 5, and first leads to
The height of gas groove is ventilated more than the first passage 14 and the spacing of the second passage 6, the height of the lower shaft shoulder of valve element 1 and second
Hole 6 it is highly identical；
When valve element 1 is in first position in valve pocket 2, air inlet 11 and gas outlet 12 communicate realization inflation；Valve element 1 is in valve
When being in the second position in set 2, gas outlet 12 and air vent 13 communicate realization and deflate；Valve element 1 in valve pocket 2 be in the 3rd position
When, air inlet 11, gas outlet 12 and air vent 13 are not connected.
Compared with prior art, valve pocket is installed to valve body by valve body lower cover of the invention as the fundamental parts of assembly
Inside lower cover, then valve element is loaded in valve pocket, during installation, by the first passage and the second passage respectively with air inlet and go out
QI KOU is aligned.
When valve element is in first position in valve pocket, as shown in Figure 3 B, the lower shaft shoulder and second passage of valve element stagger,
Now the first passage and the second passage cannot ventilate, obstructed between gas outlet and air inlet, and gas outlet and air vent are communicated
Realize deflating；
When valve element moves down certain distance from first position reaches the second position, as shown in Figure 3A, due to first logical
The height of gas groove is moved down after small stroke more than the first passage and the spacing of the second passage, now valve element, the
One passage and the second passage can realize ventilation, and gas outlet and air vent communicate realization and deflate；
When valve element is located at the 3rd position between first position and the second position, as shown in Figure 4 A and 4 B shown in FIG., i.e. valve element
The lower shaft shoulder is just aligned with gas outlet, due to the height of the lower shaft shoulder it is highly identical with the second passage, therefore now air inlet,
Gas outlet and air vent are not connected, and the present invention is in a kind of state of dynamic equilibrium.
Wherein air inlet and gas outlet are staggeredly located, and can be specifically that the lower end of air inlet is (complete higher than the upper end of gas outlet
It is completely wrong to open), or the lower end of air inlet is higher than the upper end of gas outlet, less than the lower end (intersection is staggered) of gas outlet, in the present invention
It is preferred that air inlet staggers completely with gas outlet；First passage and the second passage are preferably placed at the both sides of valve pocket, such as Fig. 1 and Tu
Shown in 2, certainly, the first passage and the second passage can also be positioned at the homonymies of valve pocket；Preferably, also choosing is arranged in valve pocket
There is smooth bore, valve element is directed at into compression spring during concrete installation and is loaded along the smooth bore in valve pocket, so can reduce
Friction between valve element and valve pocket, improves the service life of the present invention.
By the present invention in that valve element moves up and down the millimetre-sized micro-stroke of one of percentage can be achieved between different conditions
Switching, make the present invention keep higher degree of regulation.
As a modification of the present invention, as depicted in figs. 1 and 2, it is preferably provided between the inside of valve element 1 and valve body lower cover 3
Have elastic component, flexible member is used for the slip of adjusting spool axial direction inside valve pocket, its elastic element preferably compresses bullet
Spring 4, can so cause present configuration simple, with low cost, it is easy to realize internal slide of the valve element in valve pocket.Install
When, valve element alignment compression spring is put into inside valve body lower cover along valve pocket, the primary structure of such two position three-way valve is filled substantially
With completing.Certainly, the other elements that flexible member can also be readily apparent that from those skilled in the art, or from other modes reality
Internal slide of the existing valve element in hair net.
In order to improve the stability of the present invention, the groove being engaged with flexible member is preferably provided with valve body lower cover 3 (not
Illustrate).During installation, the groove that flexible member is aligned the inside of valve body lower cover is put into, and flexible member is stablized
The inside for being placed on valve body lower cover, improve the present invention stability.
Another kind of as the present invention is improved, and valve pocket 2 is preferably bonded in inside valve body lower cover 3 by fluid sealant, valve pocket 2,
It is both preferably gap between valve element 1 and valve body lower cover 3 to coordinate.So, the inside for being arranged on valve body lower cover that valve pocket can be stable,
And the gap fit structure between valve pocket, valve element and valve body lower cover can reduce between phase mutual friction, improve the present invention
Service life.
Further, as shown in Figures 1 to 4, the highly preferred height higher than gas outlet 12 of air inlet 11.Such valve element
During by moving very small stroke on the 3rd position, the lower shaft shoulder staggers with gas outlet, and gas outlet communicates realization with air vent and deflates,
Now air inlet and air vent, gas outlet are obstructed；When find very small stroke is moved down by the 3rd position when, gas outlet and
Air vent is obstructed, and realization inflation is communicated with air inlet.In above-mentioned two situations air inlet is obstructed with air vent.
In order to coordinate the use of the first vent grooves on valve element, with the first passage 14 and second in the circumference of valve pocket 2
The corresponding position distribution of passage 6 offers the second vent grooves and the 3rd vent grooves.
Further, the material of valve element 1 is preferably hard material.In the present invention, valve element is by the very high materials processing of hardness
Produce, the impression that multiple bearing is produced to valve element can be mitigated, it is to avoid the degree of regulation of the present invention is produced because of spool face
Impression and reduce.
On the other hand, the present invention also provides a kind of vibrating isolation system, including above-mentioned two position three-way valve 7.The work of two position three-way valve
With as described above, here is omitted with the course of work, course of work part of the two position three-way valve in vibrating isolation system is hereafter.
Further, vibrating isolation system further preferably includes air spring, the air inlet connection compressed gas of two position three-way valve
Source of the gas, gas outlet connection air spring, air vent connection air.
A kind of specific embodiment is, as shown in figure 5, with above-mentioned two position three-way valve be arranged on typical air spring every
As a example by vibrating system, air spring vibrating isolation system includes air spring 8, load 1 and load 2 10, and the quality of load 1 is big
In the quality of load two；The source of the gas of 11 mouthfuls of connection compressed gas of two position three-way valve, 12 mouthfuls of connection air springs, 13 mouthfuls are straight-through big
Gas.Addition load 1 when, state such as Fig. 5 A of air spring 8 are shown in solid, the state of two position three-way valve 7 as shown in Figure 3A, when
During logical upper compressed gas, compressed gas are entered from air inlet 11, out and are entered in air spring 8, air from gas outlet 12
Rapidly inflation makes load 1 move upwards to spring 8, at the same valve element 1 in the presence of compression spring 4 along inside valve pocket 2 upwards
Slide；When valve element 1 slides into three positions, the state of air spring 8 as shown in Fig. 5 A dotted lines, the state of two position three-way valve 7
As shown in Figure 4 A, the compressed gas for flowing to air spring 8 are cut off, and one 9 stop motions are loaded, while the gas in air spring 8
Body can not be discharged via gas outlet 12 and air vent 13, and air spring 8 is in a kind of metastable dynamic balance state；When
When removing load 1 and changing load 2 10 into, load diminishes suddenly makes the picking-up of air spring 8 load 2 10 move upwards, from such as
Position setting in motion shown in Fig. 5 B dotted lines, the also upward sliding along inside valve pocket 2 in the presence of compression spring 4 of valve element 1, two
The state by shown in Fig. 4 A of position three-way valve 7 begins to change into state shown in Fig. 3 B, and the gas in air spring 8 is via gas outlet 12 and row
QI KOU 13 is discharged, and makes the air pressure in air spring 8 diminish, due to the inertia of load 2 10, when load 2 10 moves to Fig. 5 B realities
Shown in line during position, load 2 10 begins to decline, while make valve element 1 along the inside slide downward of valve pocket 2, when air spring 8 pairs
When the picking-up power and the gravity of load 2 10 for loading 2 10 balances each other, valve element 1 slides into three positions, 7 pairs of skies of two position three-way valve
Gas spring 8 stops carrying out inflation/deflation action, and load 2 10 is maintained at the position shown in Fig. 5 B dotted lines, the state of two position three-way valve 8
As shown in Figure 4 B, air spring 8 is in a kind of metastable dynamic balance state again；Now load 2 10 position therewith
The position of front load 1 differs in the movement direction ± 0.01~± 0.03mm, as air spring after different loads are changed,
Load absolute position difference it is minimum, absolute position it is repeated high, so as to ensure that air spring system installs base with it
Absolute altitude deviation between quasi- face, it is ensured that the levelness of load.
In sum, the present invention can solve deficiency of the prior art, and the present invention has a simple structure, rigidity and
The features such as high precision, all-metal cooperation, high reliability, adaptation environment under high pressure, can be used for the higher position of requirement and reply precision
In air spring vibrating isolation system.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of without departing from principle of the present invention, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of two position three-way valve, it is characterised in that including valve body lower cover, the valve being fixedly installed on inside the valve body lower cover
Set and the valve element being slidably arranged in inside the valve pocket, wherein：
The side of the valve body lower cover is provided with the air inlet and gas outlet being staggeredly located；
The side of the valve pocket position corresponding with the air inlet and gas outlet is respectively arranged with the first passage and second
Passage；
The upper surface of the valve element is provided with air vent, and the side of the valve element circumferentially offers the first vent grooves, and described
The height of one vent grooves more than first passage and the second passage spacing, the height of the lower shaft shoulder of the valve element with
Second passage it is highly identical；
When the valve element is in first position in the valve pocket, the air inlet and gas outlet communicate realization inflation；The valve
When core is in the second position in the valve pocket, the gas outlet and air vent communicate realization and deflate；The valve element is in the valve
When being in three positions in set, the air inlet, gas outlet and air vent are not connected.
2. two position three-way valve according to claim 1, it is characterised in that between the valve core inside and the valve body lower cover
Setting has elastic component.
3. two position three-way valve according to claim 2, it is characterised in that be provided with and the elasticity on lid under the valve body
The groove that element is engaged.
4. two position three-way valve according to claim 1, it is characterised in that the valve pocket is bonded in the valve by fluid sealant
Inside body lower cover, gap cooperation is between the valve pocket, valve element and valve body lower cover.
5. two position three-way valve according to claim 1, it is characterised in that the height of the air inlet is higher than the gas outlet
Height.
6. the two position three-way valve according to any claim in claim 1 to 5, it is characterised in that the week of the valve pocket
Upwards the position distribution corresponding with first passage and the second passage offers the second vent grooves and the 3rd ventilation
Groove.
7. the two position three-way valve according to any claim in claim 1 to 5, it is characterised in that the material of the valve element
Matter is hard material.
8. a kind of vibrating isolation system, it is characterised in that including two three described in any claim in the claims 1 to 7
Port valve.
9. vibrating isolation system according to claim 8, it is characterised in that the vibrating isolation system also includes air spring, described
The air inlet of two position three-way valve is used to connect the source of the gas of compressed gas, and gas outlet connects the air spring, and air vent is used to connect
Connect air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111540.1A CN104763820B (en) | 2015-03-13 | 2015-03-13 | Two-position three-way valve and vibration isolation system with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111540.1A CN104763820B (en) | 2015-03-13 | 2015-03-13 | Two-position three-way valve and vibration isolation system with same |
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| Publication Number | Publication Date |
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| CN104763820A CN104763820A (en) | 2015-07-08 |
| CN104763820B true CN104763820B (en) | 2017-05-17 |
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| CN201510111540.1A Active CN104763820B (en) | 2015-03-13 | 2015-03-13 | Two-position three-way valve and vibration isolation system with same |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972140B (en) * | 2016-07-25 | 2018-10-23 | 武汉华之洋科技有限公司 | A kind of air supporting vibration isolation system control valve |
| CN110468893A (en) * | 2019-09-09 | 2019-11-19 | 热测测试技术(苏州)有限公司 | A kind of floating vibrating isolation foundation for high dynamic fatigue test |
| CN110529625B (en) * | 2019-09-09 | 2024-04-09 | 苏州希瑞格机器人科技有限公司 | Strong switching valve |
| CN110701234A (en) * | 2019-10-22 | 2020-01-17 | 中国北方车辆研究所 | Shock acceleration sensitive valve for shock absorber |
| CN113245654B (en) * | 2021-06-22 | 2021-12-31 | 广东钜兴电子科技有限公司 | Automatic chip welding process and welding device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3399241B2 (en) * | 1996-08-02 | 2003-04-21 | トヨタ車体株式会社 | Flow switching valve of hydraulic drive system in vehicle lift system |
| FR2805492B1 (en) * | 2000-02-28 | 2002-06-28 | Peugeot Citroen Automobiles Sa | REGULATION SYSTEM FOR A MOTOR VEHICLE SUSPENSION |
| CN2886250Y (en) * | 2006-03-27 | 2007-04-04 | 万安集团有限公司 | Automobile air path control valve |
| CN204533650U (en) * | 2015-03-13 | 2015-08-05 | 北京华卓精科科技有限公司 | Two position three-way valve and there is the vibrating isolation system of this two position three-way valve |
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Address after: 100084 Beijing, Tsinghua University, Haidian District Institute of science and technology building, room B902 Applicant after: U-PRECISION TECH CO., LTD. Address before: 100084 Beijing, Tsinghua University, Haidian District Institute of science and technology building, room B902 Applicant before: U-Precision Tech Co., Ltd. |
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Effective date of registration: 20211231 Address after: 100176 floor 2, building 2, yard 19, Kechuang 10th Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing (Yizhuang group, high-end industrial area of Beijing Pilot Free Trade Zone) Patentee after: BEIJING U-PRECISION TECH Co.,Ltd. Patentee after: Hangzhou Tianrui Precision Technology Co., Ltd Address before: 100084 room b902, learning and research complex building, Tsinghua University, Haidian District, Beijing Patentee before: BEIJING U-PRECISION TECH Co.,Ltd. |
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