CN104763820A - 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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- CN104763820A CN104763820A CN201510111540.1A CN201510111540A CN104763820A CN 104763820 A CN104763820 A CN 104763820A CN 201510111540 A CN201510111540 A CN 201510111540A CN 104763820 A CN104763820 A CN 104763820A
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- China
- Prior art keywords
- vent
- spool
- valve
- air outlet
- way valve
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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, refer to a kind of two position three-way valve especially and there is the vibrating isolation system of this two position three-way valve.
Background technique
In domestic and international precision instrument industry, pneumatic spring is a kind of vibration isolating mechanism of the Vertical direction be widely used, it has and manufactures the outstanding advantages such as simple, the with low cost and anti-vibration performance of processing is good, but it normally uses with height adjusting valve is inseparable, when load change or when having external disturbance, the working depth of pneumatic spring changes, and height adjusting valve control pneumatic spring carries out inflation/deflation operation makes it be returned to original working depth position rapidly.
At present, a lot of height adjusting valve used is all very outstanding controlling device, but its degree of regulation has been difficult to meet more accurate appliance requires, as the VM131 series of height modulating valve of Japanese SMC company, also two-position three way function is realized by some Design of Mechanical Structures, but its stroke that spool must move 1/10th millimeters of ranks (± 0.1 ~ ± 0.3mm) after a number of uses could realize the switching between different conditions, directly affects the degree of regulation of modulating valve.
Summary of the invention
The invention provides the high two position three-way valve of a kind of degree of regulation and there is the vibrating isolation system of this two position three-way valve.
For solving the problems of the technologies described above, the invention provides technological scheme as follows:
A kind of two position three-way valve, comprises valve body lower cover, is fixedly installed on the valve pocket of described valve body lower cover inside and is slidably arranged in the spool of described valve pocket inside, wherein:
The side of described valve body lower cover is provided with the suction port and air outlet that are staggeredly located;
The position that the side of described valve pocket is corresponding with described suction port and air outlet is respectively arranged with the first vent and the second vent;
The upper surface of described spool is provided with relief opening, the side circumference of described spool offers the first vent grooves, the height of described first vent grooves is greater than the spacing of described first vent and the second vent, and the height of the lower shaft shoulder of described spool is identical with the height of described second vent;
When described spool is in primary importance in described valve pocket, described suction port and air outlet communicate and realize inflation; When described spool is in the second place in described valve pocket, described air outlet and relief opening communicate and realize venting; When described spool is in the 3rd position in described valve pocket, described suction port, air outlet and relief opening are not connected.
Further, elastic element is provided with between described valve core inside and described valve body lower cover.
Further, the groove being provided with and matching with described elastic element is covered under described valve body.
Further, it is inner that described valve pocket is bonded in described valve body lower cover by sealer, described valve pocket, is Spielpassung between spool and valve body lower cover.
Further, the height of described suction port is higher than the height of described air outlet.
Further, in the circumference of described valve pocket, the position distribution corresponding with described first vent and the second vent offers the second vent grooves and the 3rd vent grooves.
Further, the material of described spool is hard material.
A kind of vibrating isolation system, comprises above-mentioned two position three-way valve.
Further, described vibrating isolation system also comprises pneumatic spring, and the suction port of described two position three-way valve is for connecting the source of the gas of pressurized gas, and air outlet connects described pneumatic spring, and relief opening is for connecting air.
The present invention has following beneficial effect:
Compared with prior art, valve pocket, as the fundamental parts of assembly, is installed to valve body lower cover inside, then loads in valve pocket by spool, during installation, the first vent and the second vent are aimed at suction port and air outlet respectively by valve body lower cover of the present invention.When spool is in primary importance in described valve pocket, the lower shaft shoulder and second vent of spool stagger, and now the first vent and the second vent cannot be ventilated, obstructed between air outlet and suction port, and air outlet and relief opening communicate and realize venting; When spool arrives the second place from primary importance slide downward certain distance, height due to the first vent grooves is greater than the spacing of the first vent and the second vent, after the stroke that now spool slide downward is small, first vent and the second vent can realize ventilation, and air outlet and relief opening communicate and realize venting; When three position of spool between primary importance and the second place, namely the lower shaft shoulder of spool is just in time aimed at air outlet, because the height of the lower shaft shoulder is identical with the height of the second vent, therefore now suction port, air outlet and relief opening are not connected, and the present invention is in a kind of state of transient equiliblium.
The present invention is under the described valve core outer surface of guarantee and the good prerequisite of described valve pocket endoporus cylindricity, coordinated by the tolerance of size between spool external diameter and valve pocket diameter of bore and make to there is enough little gap therebetween, the lower effect can playing valve seal also can ensure that spool can slide up and down in valve pocket inside in this gap.
The present invention is ensureing under the prerequisite that the lower shaft shoulder height degree of described spool is identical with the base dimension of described second vent height, a small upper deviation and lower deviation is designed respectively to the former and the latter, by the switching making the upper and lower micro-stroke of spool (one of mobile percentage grade) just can realize between different conditions that cooperatively interacts of tolerance of size, make the degree of regulation that the present invention keeps higher.
Accompanying drawing explanation
Fig. 1 is the main structure sectional view of two position three-way valve of the present invention;
Fig. 2 is the blast sectional view of the main structure of two position three-way valve of the present invention;
Fig. 3 is the sectional view of the inflation of two position three-way valve of the present invention and the main structure of deflation status;
Fig. 4 is the sectional view of two position three-way valve of the present invention 3rd position dynamic balance state critical piece;
Fig. 5 is the schematic diagram of an embodiment of two position three-way valve of the present invention.
Embodiment
For making the technical problem to be solved in the present invention, technological scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
On the one hand, the invention provides a kind of two position three-way valve, as shown in Figures 1 to 5, comprise valve body lower cover 3, be fixedly installed on valve body lower cover 3 inside valve pocket 2 and be slidably arranged in the spool 1 of valve pocket 2 inside, wherein:
The side of valve body lower cover 3 is provided with the suction port 11 and air outlet 12 that are staggeredly located;
The position that the side of valve pocket 2 is corresponding with suction port 11 and air outlet 12 is respectively arranged with the first vent 14 and the second vent 6;
The upper surface of spool 1 is provided with relief opening 13, the side circumference of spool 1 offers the first vent grooves 5, the height of the first vent grooves is greater than the spacing of the first vent 14 and the second vent 6, and the height of the lower shaft shoulder of spool 1 is identical with the height of the second vent 6;
When spool 1 is in primary importance in valve pocket 2, suction port 11 and air outlet 12 communicate and realize inflation; When spool 1 is in the second place in valve pocket 2, air outlet 12 and relief opening 13 communicate and realize venting; Spool 1 is in valve pocket 2 when being in the 3rd position, and suction port 11, air outlet 12 and relief opening 13 are not connected.
Compared with prior art, valve pocket, as the fundamental parts of assembly, is installed to valve body lower cover inside, then loads in valve pocket by spool, during installation, the first vent and the second vent are aimed at suction port and air outlet respectively by valve body lower cover of the present invention.
When spool is in primary importance in valve pocket, as shown in Figure 3 B, the lower shaft shoulder and second vent of spool stagger, and now the first vent and the second vent cannot be ventilated, obstructed between air outlet and suction port, and air outlet and relief opening communicate and realize venting;
When spool moves down the certain distance arrival second place from primary importance, as shown in Figure 3A, height due to the first vent grooves is greater than the spacing of the first vent and the second vent, after now spool moves down small stroke, first vent and the second vent can realize ventilation, and air outlet and relief opening communicate and realize venting;
When three position of spool between primary importance and the second place, as shown in Figure 4 A and 4 B shown in FIG., namely the lower shaft shoulder of spool is just in time aimed at air outlet, because the height of the lower shaft shoulder is identical with the height of the second vent, therefore now suction port, air outlet and relief opening are not connected, and the present invention is in a kind of state of transient equiliblium.
Wherein suction port and air outlet are staggeredly located, can be specifically the upper end (completely stagger) of lower end higher than air outlet of suction port, or the upper end of the lower end of suction port higher than air outlet, the lower end lower than air outlet (intersection is staggered), in the present invention, stagger completely in preferred suction port and air outlet; First vent and the second vent are preferably placed at the both sides of valve pocket, and as depicted in figs. 1 and 2, certainly, the first vent and the second vent also can be positioned at the homonymy of valve pocket; Preferably, also have choosing to be provided with smooth bore in valve pocket, during concrete installation, spool is aimed at Compress Spring and load along the smooth bore in valve pocket, the friction between spool and valve pocket can be reduced like this, improve working life of the present invention.
The switching that the present invention just can realize between different conditions by making spool move up and down the millimetre-sized micro-stroke of one of percentage, makes the degree of regulation that the present invention keeps higher.
As a modification of the present invention, as depicted in figs. 1 and 2, preferably elastic element is provided with between spool 1 inside and valve body lower cover 3, elastic element is used for regulating spool in the inner axial slip of valve pocket, its elastic element is preferably Compress Spring 4, structure of the present invention can be made so simple, with low cost, be easy to realize the internal slide of spool at valve pocket.During installation, spool is aimed at Compress Spring and put into valve body lower cover inside along valve pocket, the main structure of such two position three-way valve has assembled substantially.Certainly, other elements that elastic element also can select those skilled in the art easily to expect, or select other modes to realize the internal slide of spool at hair net.
In order to improve stability of the present invention, valve body lower cover 3 is preferably provided with the groove (not shown) matched with elastic element.During installation, groove elastic element being aimed at the inside of valve body lower cover is put into, and can make the inside being placed on valve body lower cover that elastic element is stable like this, improve stability of the present invention.
Improve as another kind of the present invention, it is inner that valve pocket 2 is bonded in valve body lower cover 3 preferably by sealer, valve pocket 2, is all preferably Spielpassung between spool 1 and valve body lower cover 3.Like this, the inside being arranged on valve body lower cover that valve pocket can be stable, and valve pocket, Spielpassung structure between spool and valve body lower cover can reduce phase mutual friction each other, improve working life of the present invention.
Further, as shown in Figures 1 to 4, the height of suction port 11 is preferably higher than the height of air outlet 12.Such spool is by when very small stroke is moved in the 3rd position, staggers in the lower shaft shoulder and air outlet, and air outlet communicates with relief opening and realizes exitting, and now suction port and relief opening, air outlet are all obstructed; When find move down very small stroke by the 3rd position time, air outlet and relief opening obstructed, communicate with suction port and realize inflating.Suction port and relief opening are all obstructed in above-mentioned two situations.
In order to coordinate the use of the first vent grooves on spool, position distribution corresponding with the first vent 14 and the second vent 6 in the circumference of valve pocket 2 offers the second vent grooves and the 3rd vent grooves.
Further, the material of spool 1 is preferably hard material.In the present invention, spool is produced by the materials processing that hardness is very high, can alleviate the impression that multiple bearing produces spool, avoids degree of regulation of the present invention to reduce because spool face produces impression.
On the other hand, the present invention also provides a kind of vibrating isolation system, comprises above-mentioned two position three-way valve 7.The effect of two position three-way valve and working procedure as described above, repeat no more herein, and the working procedure part of this two position three-way valve in vibrating isolation system hereafter.
Further, vibrating isolation system also preferably includes pneumatic spring, and the suction port of two position three-way valve connects the source of the gas of pressurized gas, and air outlet connects pneumatic spring, and relief opening connects air.
A kind of concrete mode of execution is, as shown in Figure 5, be arranged in typical pneumatic spring vibrating isolation system for above-mentioned two position three-way valve, pneumatic spring vibrating isolation system comprises pneumatic spring 8, load 1 and load 2 10, and the quality of load 1 is greater than the quality of load two; 11 mouthfuls of two position three-way valve connect the source of the gas of pressurized gas, and 12 mouthfuls connect pneumatic spring, 13 mouthfuls of straight-through air.When adding load 1, the state of pneumatic spring 8 is as shown in Fig. 5 A solid line, the state of two position three-way valve 7 as shown in Figure 3A, when logical upper pressurized gas, pressurized gas is entered from suction port 11, from air outlet 12 out and enter into pneumatic spring 8, pneumatic spring 8 rapidly inflation makes load 1 move upward, simultaneously spool 1 under the effect of Compress Spring 4 along the inner upward sliding of valve pocket 2, when spool 1 slides into the 3rd position, the state of pneumatic spring 8 is as shown in Fig. 5 A dotted line, the state of two position three-way valve 7 as shown in Figure 4 A, the pressurized gas flowing to pneumatic spring 8 is cut off, load 1 stop motion, the gas of pneumatic spring 8 li can not be discharged via air outlet 12 and relief opening 13 simultaneously, and pneumatic spring 8 is in a kind of metastable dynamic balance state, when removing load 1 and change load 2 10 into, load diminishes suddenly and makes pneumatic spring 8 hold up load 2 10 to move upward, from the position setting in motion such as shown in Fig. 5 B dotted line, spool 1 under the effect of Compress Spring 4 along valve pocket 2 inside also upward sliding, two position three-way valve 7 becomes state shown in Fig. 3 B by state shown in Fig. 4 A, the gas that pneumatic spring is 8 li is discharged via air outlet 12 and relief opening 13, air pressure in pneumatic spring 8 is diminished, due to the inertia of load 2 10, when load 2 10 moves to position shown in Fig. 5 B solid line, load 2 10 starts to decline, make spool 1 along the inner slide downward of valve pocket 2 simultaneously, when the picking-up power of pneumatic spring 8 pairs of loads 2 10 and the gravity of load 2 10 balance each other, when spool 1 slides into the 3rd position, two position three-way valve 7 pairs of pneumatic springs 8 stop carrying out inflation/deflation action, load 2 10 remains on the position shown in Fig. 5 B dotted line, the state of two position three-way valve 8 as shown in Figure 4 B, pneumatic spring 8 is in a kind of metastable dynamic balance state again, the position of now load 2 10 differs ± 0.01 ~ ± 0.03mm in the movement direction with the position of load before 1, be pneumatic spring after replacing different loads, the absolute position difference of load is minimum, the repeatability of absolute position is high, thus ensure that the absolute altitude deviation between air spring system and its datum clamp face, ensure that the levelness of load.
In sum, the present invention can solve deficiency of the prior art, it is simple that the present invention has structure, and the features such as rigidity and precision is high, full-metallic coordinates, reliability is high, adaptation hyperbaric environment, can be used for the higher position of requirement and reply in the pneumatic spring vibrating isolation system of precision.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a two position three-way valve, is characterized in that, comprises valve body lower cover, is fixedly installed on the valve pocket of described valve body lower cover inside and is slidably arranged in the spool of described valve pocket inside, wherein:
The side of described valve body lower cover is provided with the suction port and air outlet that are staggeredly located;
The position that the side of described valve pocket is corresponding with described suction port and air outlet is respectively arranged with the first vent and the second vent;
The upper surface of described spool is provided with relief opening, the side circumference of described spool offers the first vent grooves, the height of described first vent grooves is greater than the spacing of described first vent and the second vent, and the height of the lower shaft shoulder of described spool is identical with the height of described second vent;
When described spool is in primary importance in described valve pocket, described suction port and air outlet communicate and realize inflation; When described spool is in the second place in described valve pocket, described air outlet and relief opening communicate and realize venting; When described spool is in the 3rd position in described valve pocket, described suction port, air outlet and relief opening are not connected.
2. two position three-way valve according to claim 1, is characterized in that, is provided with elastic element between described valve core inside and described valve body lower cover.
3. two position three-way valve according to claim 2, is characterized in that, covers the groove being provided with and matching with described elastic element under described valve body.
4. two position three-way valve according to claim 1, is characterized in that, it is inner that described valve pocket is bonded in described valve body lower cover by sealer, described valve pocket, is Spielpassung between spool and valve body lower cover.
5. two position three-way valve according to claim 1, is characterized in that, the height of described suction port is higher than the height of described air outlet.
6. the two position three-way valve according to claim arbitrary in claim 1 to 5, is characterized in that, position distribution corresponding with described first vent and the second vent in the circumference of described valve pocket offers the second vent grooves and the 3rd vent grooves.
7. the two position three-way valve according to claim arbitrary in claim 1 to 5, is characterized in that, the material of described spool is hard material.
8. a vibrating isolation system, is characterized in that, comprises the two position three-way valve described in arbitrary claim in the claims 1 to 7.
9. vibrating isolation system according to claim 8, is characterized in that, described vibrating isolation system also comprises pneumatic spring, and the suction port of described two position three-way valve is for connecting the source of the gas of pressurized gas, and air outlet connects described pneumatic spring, and relief opening is for connecting air.
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| 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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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN104763820A true CN104763820A (en) | 2015-07-08 |
| CN104763820B CN104763820B (en) | 2017-05-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972140A (en) * | 2016-07-25 | 2016-09-28 | 武汉华之洋科技有限公司 | Air flotation 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 |
| CN110529625A (en) * | 2019-09-09 | 2019-12-03 | 苏州希瑞格机器人科技有限公司 | A kind of powerful 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 |
| CN113245654A (en) * | 2021-06-22 | 2021-08-13 | 广东钜兴电子科技有限公司 | Automatic chip welding process and welding device |
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| FR2805492A1 (en) * | 2000-02-28 | 2001-08-31 | Peugeot Citroen Automobiles Sa | Device, for regulating suspension of vehicle, consists of controllable slide, which fits in connection between supplementary sphere and suspension units |
| 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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2015
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1047508A (en) * | 1996-08-02 | 1998-02-20 | Toyota Auto Body Co Ltd | Flow selector valve of hydraulic transmission device and vehicular lifter therewith |
| FR2805492A1 (en) * | 2000-02-28 | 2001-08-31 | Peugeot Citroen Automobiles Sa | Device, for regulating suspension of vehicle, consists of controllable slide, which fits in connection between supplementary sphere and suspension units |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972140A (en) * | 2016-07-25 | 2016-09-28 | 武汉华之洋科技有限公司 | Air flotation vibration isolation system control valve |
| 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 |
| CN110529625A (en) * | 2019-09-09 | 2019-12-03 | 苏州希瑞格机器人科技有限公司 | A kind of powerful switching valve |
| 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 |
| CN113245654A (en) * | 2021-06-22 | 2021-08-13 | 广东钜兴电子科技有限公司 | Automatic chip welding process and welding device |
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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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