CN204805645U - Adjustable pre -compaction of threaded connection formula valve of breathing freely - Google Patents
Adjustable pre -compaction of threaded connection formula valve of breathing freely Download PDFInfo
- Publication number
- CN204805645U CN204805645U CN201520467339.2U CN201520467339U CN204805645U CN 204805645 U CN204805645 U CN 204805645U CN 201520467339 U CN201520467339 U CN 201520467339U CN 204805645 U CN204805645 U CN 204805645U
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- valve
- spring
- exhaust
- seat
- valve seat
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- Expired - Fee Related
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Check Valves (AREA)
Abstract
The utility model discloses an adjustable pre -compaction of threaded connection formula valve of breathing freely, set gradually admit air check valve and exhaust check valve by reaching down in the valve body, the check valve that admits air includes disk seat, case and valve rod, the disk seat suit is in the valve body inner chamber, and the case suit forms the control switch that admits air in disk seat upper segment cavity, and the disk seat hypomere forms the slide for hollow structure, and the valve rod can slide from top to bottom in the slide, installs the spring that admits air between case and disk seat hypomere, the exhaust check valve includes spring holder, exhaust spring, adjusting bolt and lock nut, adjusting bolt and the fixed suit of spring holder install the exhaust spring between spring holder downside and disk seat, fit clearance between disk seat whole and the valve body inner wall forms exhaust control switch. The utility model discloses a rotation regulation bolt drives the part spring holder and makes progress or move down to discharge pressure is adjusted to the decrement of adjusting spring, and conventional value is 0.02MPa when dispatching from the factory, and control range is 0.01-0.075MPa.
Description
Technical field
The utility model relates to a kind of Mechanical course part, is specifically related to a kind of screw connected adjustable precompressed vent valve.
Background technique
Existing prepressing type one-way valve is mainly applicable to engineering machinery, vehicle, mechanically moving and needs the hydraulic reservoir with pressure to support the use, product forms primarily of air filter, breather check valve, exhaust check valve, filling strainer and seal rubber pad, Main Function in hydraulic system to keep predetermined pressure in fuel tank, improve the suction capacity of oil pump, maintain the steady of liquid in fuel tank, the faults such as avoid liquid in fuel tank to produce because of vibration or disturbance suction that pump may occur is empty.Extend the working life of fluid and air filtering core.Domestic common series product code name is PAF1/PAF2, and during this product export, exhaust pressure is definite value, and client cannot regulate according to actual needs, and common exhaust pressure is 0.02MPa/0.035MPa/0.075MPa.But, in actual use, only there is the exhaust pressure of these standards to be obviously the needs that can not meet all hydraulic system, exhaust pressure regulates not accurate, tank pressure just can not reach optimum value, and oil pump suction capacity declines, and affects the normal operation of whole system.
Model utility content
The purpose of this utility model is the technical problem that can not regulate for prepressing type vent valve PAF1 series of exhaust gas one-way valve pressure in prior art, a kind of screw connected adjustable precompressed vent valve is provided, this vent valve can by regulating the decrement of exhaust spring, regulate exhaust pressure, mainly for the vent valve that exhaust pressure of dispatching from the factory is 0.02MPa, regulation range is 0.01 ~ 0.075MPa.
Technological scheme: a kind of screw connected adjustable precompressed vent valve, comprise filter screen and valve body, in described valve body by lower and on set gradually breather check valve and exhaust check valve, valve body is provided with the air hole for being communicated with filter screen, described breather check valve comprises valve seat, spool and valve rod, described valve seat is sleeved in body cavity, seal ring is provided with between valve seat and valve interior wall, valve seat is divided into valve seat epimere and valve seat hypomere, valve core housing is contained in valve seat epimere cavity and forms air inlet control switch, valve seat hypomere is that hollow structure forms slideway, valve rod can slide up and down in slideway, air inlet spring is installed between spool and valve seat hypomere, described valve seat bottom is air outlet hole, described exhaust check valve comprises spring seat, exhaust spring, adjusting bolt and locking nut, described adjusting bolt and spring seat are fixed and are set with, adjusting bolt is installed with the valve interior wall screw thread being positioned at spring seat top, on the downside of spring seat and between valve seat, exhaust spring is installed, the decrement of described exhaust spring is adjustable with moving up and down of spring seat, matching gap between described valve seat entirety and valve interior wall forms gas exhaust inspecting switch.
Based on technique scheme, described exhaust spring decrement makes exhaust pressure regulation range be 0.01 ~ 0.075MPa.
Based on technique scheme, described spool is arranged to up-narrow and down-wide trapezium structure, and the junction, end of spool and valve seat epimere is provided with O RunddichtringO.
Based on technique scheme, described filter screen circumference is enclosed in valve body outer side surface, and valve body arranges annular gas permeable hole.
Based on technique scheme, spring seat is fixedly set in adjusting bolt end.
The beneficial effects of the utility model: screw connected adjustable precompressed vent valve (PAF1) of the present utility model, in conjunction with client and market feedback information: client needs can the vent valve of free adjustment exhaust pressure, the application redesigns original precompressed ventilation valve structure, increase can regulate the component of exhaust pressure, be equipped with rational valve body structure, easily can realize the free adjusting of exhaust pressure, compact structure, valve body controls precisely, easy and simple to handle, to meet the need of market, be specially: increase adjusting bolt on exhaust spring seat top, make spring seat position adjustable, by rotating adjusting bolt, part spring seat is driven to move up or down, thus the decrement of adjustment spring, adjust exhaust pressure, then locking nut.When dispatching from the factory, conventional value is 0.02MPa, and regulation range is 0.01 ~ 0.075MPa.Structure is simple, and cost of production is low, easy to use, and client can regulate exhaust pressure according to actual needs, uses flexibly, controls precisely, hydraulic system can be made to run and reach the optimum state.
Accompanying drawing explanation
Fig. 1 is the screw connected adjustable precompressed ventilation valve structure schematic diagram of the utility model;
Fig. 2 is the screw connected adjustable precompressed vent valve cross-sectional view of the utility model;
Fig. 3 is working principle schematic diagram of the present utility model.
Number in the figure: number in the figure: 1 is adjusting bolt, 2 is locking nut, and 3 is spring seat, and 4 is exhaust spring, and 5 is filter screen; 6 is air outlet, and 7 is air hole, and 8 is valve seat, and 9 is spool, and 10 is air inlet spring, and 11 is O type circle, and 12 is breather check valve, and 13 is exhaust check valve, and 14 is valve seat epimere, and 15 is valve seat hypomere.
Embodiment
Below in conjunction with embodiment, the utility model is described further, better to understand technical solutions of the utility model.
Embodiment 1: a kind of screw connected adjustable precompressed vent valve, see Fig. 1 and Fig. 2, comprise filter screen 5 and valve body, filter screen 5 circumference is enclosed in valve body outer side surface, and valve body is provided with the annular gas permeable hole 7 for being communicated with filter screen.Air hole 7 be into, be vented public hole, in valve body by lower and on set gradually breather check valve and exhaust check valve, described breather check valve comprises valve seat 8, spool 9 and valve rod, spool and valve rod are structure as a whole, described valve seat 8 is sleeved in body cavity, arranging between valve seat 8 and valve interior wall multiplely has O RunddichtringO, valve seat is divided into valve seat epimere 14 and valve seat hypomere 15, as shown in Figure 2, spool 9 is sleeved in valve seat epimere 14 cavity and forms air inlet control switch, valve seat hypomere 15 is hollow structure formation slideway, valve rod can slide up and down in slideway, and then be with movable valve plug and the relative movement of valve seat epimere, close or open gas-entered passageway.Between spool 9 and valve seat hypomere, be provided with air inlet spring 10, described valve seat bottom is air outlet hole 6, and air outlet hole outer end is provided with connecting thread.Described air hole 7, breather check valve and air outlet hole 6 form vent valve gas-entered passageway.Spool 9 is arranged to up-narrow and down-wide trapezium structure, and the junction, end of the wide end of spool 9 and valve seat epimere is provided with O RunddichtringO.Trapezoidal spool coordinates with valve seat epimere, and during closedown, the lucky clamping stagnation of the wide end of spool is outside valve seat epimere, and by gas-entered passageway hermetically closing, O RunddichtringO ensure that there is not handing-over gap between the wide end of spool and valve seat epimere, to prevent from opening by mistake.When opening, spool moves down, and namely the handing-over gap between the narrow end of spool and valve seat epimere forms gas-entered passageway.
Described exhaust check valve comprises spring seat 3, exhaust spring 4, adjusting bolt 1 and locking nut 2, and described adjusting bolt 1 is set with spring seat 3 is fixing, and the present embodiment spring abutment of being hit by a bullet is fixedly set in adjusting bolt end.Adjusting bolt 1 is installed with the valve interior wall screw thread being positioned at spring seat top, on the downside of spring seat 3 and between valve seat 8, be provided with exhaust spring, and the matching gap between described valve seat entirety and valve interior wall forms gas exhaust inspecting switch.Rotate adjusting bolt up and down, adjusting bolt 1 is along valve interior wall relative movement, and spring seat 3 can move up and down with adjusting bolt, and then regulates the decrement of connected exhaust spring, and amount of spring compression changes, and then can adjust exhaust pressure.The vent valve that the present embodiment is 0.02MPa mainly for conventional value when dispatching from the factory regulates, and exhaust pressure regulation range is 0.01 ~ 0.075MPa.When exhaust pressure adjusts to desired value, with locking nut fixing bolt.Client can free adjustment vent valve exhaust pressure as required, and change the nonadjustable passive present situation of vent valve exhaust pressure in the past, use more flexible, practicability is stronger.
Principle signal shown in Figure 3, for precompressed vent valve, the pressure of breather check valve 12 is uncontrollable, and general suction pressure is less than 0.003MPa, but by improving exhaust check valve partial structurtes, exhaust pressure realizes adjustable.Specific works principle is as follows: when hydraulic work system, in fuel tank, liquid level rises or declines, during decline, the application's precompressed vent valve sucks air, automatically breather check valve 12 is entered through filter screen 5, air pressure overcomes air inlet spring 10 elastic force, spool 9 moves down, breather check valve 12 is opened, air enters fuel tank, now case internal pressure is less than predetermined pressure, exhaust check valve is in closed condition, now keeps predetermined pressure in fuel tank, improves the suction capacity of oil pump, maintenance fluid is steady, avoids occurring vacuum phenomenon.Liquid level gos up, oil liquid temperature rises, add tank pressure, when being greater than predetermined pressure, tank pressure overcomes exhaust spring 4 elastic force, upwards overall jack-up valve seat 8, after valve seat 8 moves, and occur between valve interior wall joining gap, namely multiple handing-over gap forms exhaust passage, exhaust check valve 13 is made, fuel tank through air outlet 6, exhaust check valve 13 and air hole 7 be outwards vented, until case internal pressure equals predetermined pressure, exhaust check valve spring reset, valve seat entirety moves down, and exhaust check valve 13 is closed.Circulation can protect hydraulic system normally to work so back and forth, extends fluid and element working life.
Claims (5)
1. a screw connected adjustable precompressed vent valve, it is characterized in that: comprise filter screen and valve body, in described valve body by lower and on set gradually breather check valve and exhaust check valve, valve body is provided with the air hole for being communicated with filter screen, described breather check valve comprises valve seat, spool and valve rod, described valve seat is sleeved in body cavity, seal ring is provided with between valve seat and valve interior wall, valve seat is divided into valve seat epimere and valve seat hypomere, valve core housing is contained in valve seat epimere cavity and forms air inlet control switch, valve seat hypomere is that hollow structure forms slideway, valve rod can slide up and down in slideway, air inlet spring is installed between spool and valve seat hypomere, described valve seat bottom is air outlet hole, described exhaust check valve comprises spring seat, exhaust spring, adjusting bolt and locking nut, described adjusting bolt and spring seat are fixed and are set with, adjusting bolt is installed with the valve interior wall screw thread being positioned at spring seat top, on the downside of spring seat and between valve seat, exhaust spring is installed, the decrement of exhaust spring is adjustable with moving up and down of spring seat, matching gap between described valve seat entirety and valve interior wall forms gas exhaust inspecting switch.
2. screw connected adjustable precompressed vent valve according to claim 1, is characterized in that: described exhaust spring decrement makes exhaust pressure regulation range be 0.01 ~ 0.075MPa.
3. screw connected adjustable precompressed vent valve according to claim 1, it is characterized in that: described spool is arranged to up-narrow and down-wide trapezium structure, the junction, end of spool and valve seat epimere is provided with O RunddichtringO.
4. screw connected adjustable precompressed vent valve according to claim 1, is characterized in that: described filter screen circumference is enclosed in valve body outer side surface, and valve body arranges annular gas permeable hole.
5. the screw connected adjustable precompressed vent valve according to any one of claim 1-4, is characterized in that: spring seat is fixedly set in adjusting bolt end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520467339.2U CN204805645U (en) | 2015-07-02 | 2015-07-02 | Adjustable pre -compaction of threaded connection formula valve of breathing freely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520467339.2U CN204805645U (en) | 2015-07-02 | 2015-07-02 | Adjustable pre -compaction of threaded connection formula valve of breathing freely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204805645U true CN204805645U (en) | 2015-11-25 |
Family
ID=54590473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520467339.2U Expired - Fee Related CN204805645U (en) | 2015-07-02 | 2015-07-02 | Adjustable pre -compaction of threaded connection formula valve of breathing freely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204805645U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307057A (en) * | 2018-11-08 | 2019-02-05 | 山西维达机械制造有限公司 | Binary channels dust-proof air ventilation plug |
| CN113339618A (en) * | 2021-05-27 | 2021-09-03 | 苏州艾尔泰流体控制有限公司 | Air exhaust valve with adjustable exhaust volume |
-
2015
- 2015-07-02 CN CN201520467339.2U patent/CN204805645U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307057A (en) * | 2018-11-08 | 2019-02-05 | 山西维达机械制造有限公司 | Binary channels dust-proof air ventilation plug |
| CN109307057B (en) * | 2018-11-08 | 2024-03-29 | 山西维达传动科技有限公司 | Double-channel dustproof ventilation plug |
| CN113339618A (en) * | 2021-05-27 | 2021-09-03 | 苏州艾尔泰流体控制有限公司 | Air exhaust valve with adjustable exhaust volume |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Xinxiang County of Xinxiang City, Henan province 453700 Zhai, the Yellow River Road No. 298 Patentee after: Xinxiang Merrill Lynch Polytron Technologies Inc Address before: Xinxiang County of Xinxiang City, Henan province 453700 Zhai, the Yellow River Road No. 298 Patentee before: XINJIANG MEILIN HYDRAULIC ACCESSORIES CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20210702 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |