CN201858207U - Threaded inserting type balanced valve - Google Patents
Threaded inserting type balanced valve Download PDFInfo
- Publication number
- CN201858207U CN201858207U CN2010202453982U CN201020245398U CN201858207U CN 201858207 U CN201858207 U CN 201858207U CN 2010202453982 U CN2010202453982 U CN 2010202453982U CN 201020245398 U CN201020245398 U CN 201020245398U CN 201858207 U CN201858207 U CN 201858207U
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Abstract
The utility model relates to an inserting type balanced valve which is applied to the working condition with suddenly-changed load and particularly to engineering machinery which needs to control the load to descend, and plays a part in balancing the load gravity and the load speed. The inserting type balanced valve comprises a valve body and a valve core, wherein the valve core is connected with the valve body by a spring set which is formed by a plurality of springs which are screwed left and right, mutually embedded and sheathed, and different in rigidities respectively to form into a multi-load sensitive whole. The valve core integrates the function of a main valve core with the function of a pilot valve core, so that the response speed is completely coincident, the load is more stable during descending, and a low-frequency jittering phenomenon can be avoided, so that the safe reliability of a system can be guaranteed, an oil way between a main oil port B and a main oil port A can be automatically and fast turned off by the main valve core under the condition that a tube is loss of pressure, and the stalled descending of the load can be avoided, therefore, the inserting type balanced valve is used as a hydraulic lock.
Description
Technical field
The utility model relates to a kind of hydraulically balanced valve, and especially a kind of thread cartridge balanced valve belongs to hydraulic transmission technology field.
Background technique
In large-scale, the medium-sized and small-sized hydraulic system in modern times, the valve body that adopts various hydraulically balanced valves widely or have the equilibrium valve function.Existing hydraulically balanced valve mainly contains control valve and main valve constitutes, common in the engineering machinery have two kinds of single-stage and leading types, single-stage main valve and control valve are parallel connection, the leading type main valve is nested the connection with control valve, but above-mentioned two kinds of hydraulically balanced valves are that the hydraulic pressure load bearing system is when load is descending in the common shortcoming that exists on the performance, the valve core opening of equilibrium valve is difficult to be stabilized on the definite openings of sizes, make and load on the phenomenon that produces low-frequency jitter in the decline process, cause system extremely unstable, have a strong impact on the safety reliability of complete machine.In addition, existing equilibrium valve generally adopts integral valve piece formula to install and is formed by connecting, and existing problem is that corresponding Conncetion cimension is different and have multiple structural type valve piece, to design and promote inconvenience.
In order to be fit to the development and change of application, the Placement of valve piece has been proposed more requirement, especially need responsive reflection is carried out in the sudden change of load.Therefore, adopt integral valve piece formula mounting structure, can not meet the demands, increase new function, increase function and must cause the long-pending change of valve block big, can cause the valve block cost to increase undoubtedly, and the spatial constraints of installing.
The model utility content
The technical problems to be solved in the utility model is: keeping under the constant substantially prerequisite of original body size, a kind of compact structure is proposed, can adapt to multiple Placement, valve core structure with multiple load-sensitive, a kind of be convenient to install connection, the hydraulic pressure thread cartridge balanced valve that the load reflection is reliable, stable are provided.
On the above-mentioned cognition basis, the claimant has proposed the technological scheme of the utility model thread cartridge balanced valve, this thread cartridge balanced valve comprises spool, valve body and valve seat, described valve body passes through cluster spring, piston, valve gap links to each other with spool, form a multiple load-sensitive integral body, described cluster spring is to have multiple structure, described spool is become one by main valve plug and guide's spool, described main valve plug is step-like revolute axes configuration, the end is a cone-shaped structure, described valve seat is by check valve body and spool by cone-shaped structure, valve body links to each other and forms an integral body, described guide's spool and valve body, the airtight cavity that seal ring forms links to each other with control port C.
The spring rotation direction of described cluster spring is inconsistent, is respectively left-handed and dextrorotation, mutually nested and rigidity differs that two-layer at least spring is formed, make control more accurately, sensitive, reliable.Two main hydraulic fluid port A, B that are provided with on the valve body and control port C communicate with each other and control by the motion of spool, and main hydraulic fluid port A communicates with spring chamber by the aperture of spool, make spring chamber be unlikely to vacuum and cause slow in reacting.
The utility model is further improved to be, takes the sealing nut structure, and sealing is stable, and compact structure has further been simplified the internal seal structure of cartridge balanced valve.
The utility model is a kind of cartridge balanced valve, simplifies the equilibrium valve structure, reduced volume, and weight reduction, the convenient installation, little to the structural requirement that is connected, use very extensive.Be convenient to seriation, microminiaturization and integrated.
Be particularly useful for the engineering machinery that adopts the open type hydraulic system transmission and need control load to transfer, play balanced load gravity and loading speed.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is an embodiment's of the utility model a structural representation.
Adjusting screw 1 is arranged, sealing nut 2, valve gap 3, piston 4, valve body 5, Steel Cable Baffle Ring 6, cluster spring 7, spool 8, seal ring 9,10, valve seat 11, spring seat 12, spring 13, hole back-up ring 14 among the figure.
Main hydraulic fluid port A, main hydraulic fluid port B, control port C.
Fig. 2 is Fig. 1 embodiment's the hydraulic schematic diagram on the winch of being applied in.
Embodiment
Embodiment one
The basic structure of the thread cartridge balanced valve of present embodiment as shown in Figure 1, this thread cartridge balanced valve is mainly by sealing nut 2, valve body 5, cluster spring 7, spool 8, valve seat 11 constitutes.Valve seat 11 is connected with spool 8 front and back, cone structure one end with spool 8, form the structure of an one-way control valve, and guide's spool is positioned at the other end of spool 8, for step-like, the airtight cavity that forms with valve body 5, seal ring 9,10 links to each other with control port C, forms guide's control oil channel, valve body 5 is tubular, and seal ring 9,10 is the Glais ring sealing configuration.
Described valve body 5 links to each other with spool 8 by cluster spring 7, piston 4, valve gap 3, form a multiple load-sensitive integral body, described cluster spring 7 has the structure of multiple spring, at least two springs are formed, described spring rotation direction is inconsistent, be respectively left-handed and dextrorotation and mutually nested, rigidity and differ, for make control more accurately, sensitive, reliable, the Spring effect that cluster spring 7 is mutually nested by three layers, rigidity differs will be better.Be arranged at two main hydraulic fluid port A, B and control port C on the valve body, communicate with each other and control by the motion of main valve plug, described hydraulic fluid port A communicates with spring chamber by the aperture of main valve plug, makes spring chamber be unlikely to vacuum and causes slow in reacting.
Guide's spool of the present utility model and main valve plug are integrated into the spool one, it is easier not influence under the prerequisite of both functions processing, more compact structure, and reaction velocity can be accomplished conformity completely, make the hydraulic pressure load bearing system when load is descending, the valve core opening of equilibrium valve is stabilized on the definite openings of sizes, loads in the decline process steady, can not produce the low-frequency jitter phenomenon, thus the safety reliability of the system of assurance.
The working procedure of thread cartridge balanced valve of the present utility model is: when pressure oil when main hydraulic fluid port A enters equilibrium valve, under the effect of oil pressure, overcome spring force, valve seat 11 moves to right, valve seat 11 is opened, and pressure oil flows out through main hydraulic fluid port B, and this moment, equilibrium valve was done one-way valve usefulness; When main hydraulic fluid port A stopped oil-feed, under the effect of spring 13, valve seat 11 was closed, and equilibrium valve is in blocking; When oil return during through main hydraulic fluid port B, under the effect of the spring force of cluster spring 7, main valve plug is not opened, at this moment, if control port C has certain pressure oil to enter, overcome the spring force of cluster spring 7, promote main valve plug to left movement, the oil return of main hydraulic fluid port B is flowed back to fuel tank through the restriction of valve seat 11.If the load backhaul is too fast, oil pump feed is untimely, and control mouthful C pressure will descend, and main valve plug is tending towards closing under the effect of cluster spring 7, and corresponding valve seat 11 restriction apertures also reduce, so and the opening speed of the load of slowing down.If under the situation of pipeline rapid decompression, main valve plug can be closed the oil circuit between main hydraulic fluid port A and the main hydraulic fluid port B automatically rapidly, can prevent that load stall from descending, and plays the effect of hydraulic lock.If system pressure raises suddenly, under the effect of control mouthful C, main valve plug is slowly raise, thereby the opening speed of proof load is not undergone mutation the dynamic stability of raising system.
In a word, compare with existing equilibrium valve, characteristic of the present utility model is:
1, adopts the multilayer cluster spring to control spool, form a multiple load-sensitive integral body, make control accurate more, sensitive, reliable;
2, cartridge balanced valve adopts guide's spool and main valve plug to be integrated into the spool one, thereby the internal structure that makes is more simple, assembles more conveniently, has especially reduced the volume of valve;
3, adopt the sealing nut structure, good seal performance has further been simplified the internal structure of valve body.
In addition to the implementation, the utility model can also have other mode of executions, as uses hydraulic schematic diagram of bidirectional balanced valve or the like.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (7)
1. thread cartridge balanced valve, this thread cartridge balanced valve comprises spool, valve body and valve seat, it is characterized in that: described valve body links to each other with spool by cluster spring, piston, valve gap, forms a multiple load-sensitive integral body, and described cluster spring is the structure with multiple spring.
2. thread cartridge balanced valve according to claim 1, it is characterized in that: described spool is become one by main valve plug and guide's spool, described main valve plug is step-like revolute axes configuration, the end is a cone-shaped structure, described valve seat links to each other with spool, valve body by the check valve body by cone-shaped structure and forms an integral body, and described guide's spool links to each other with control port C with the airtight cavity that valve body, seal ring form.
3. thread cartridge balanced valve according to claim 1 is characterized in that: the two-layer at least spring of described cluster spring structure is formed, and described spring rotation direction is divided into left-handed and dextrorotation, and described spring is mutually nested, and rigidity differs.
4. thread cartridge balanced valve according to claim 1, it is characterized in that: two main hydraulic fluid port A, B that are provided with on the described valve body and control port C, communicate with each other and control by the motion of spool, the main hydraulic fluid port A on the described valve body communicates with spring chamber by the aperture of spool.
5. thread cartridge balanced valve according to claim 1 is characterized in that: the sealing nut structure is adopted in the sealing of described valve gap.
6. thread cartridge balanced valve according to claim 2 is characterized in that: the seal ring of described guide's spool is the Glais ring sealing configuration.
7. according to claim 1 or 3 described thread cartridge balanced valves, it is characterized in that: described cluster spring is mutually nested by three layers of spring, and described spring rate differs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202453982U CN201858207U (en) | 2010-07-02 | 2010-07-02 | Threaded inserting type balanced valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202453982U CN201858207U (en) | 2010-07-02 | 2010-07-02 | Threaded inserting type balanced valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201858207U true CN201858207U (en) | 2011-06-08 |
Family
ID=44104014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202453982U Expired - Fee Related CN201858207U (en) | 2010-07-02 | 2010-07-02 | Threaded inserting type balanced valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201858207U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865171A (en) * | 2010-07-02 | 2010-10-20 | 镇江大力液压马达有限责任公司 | Thread cartridge balanced valve |
| CN103613029A (en) * | 2013-11-19 | 2014-03-05 | 枣庄矿业（集团）有限责任公司柴里煤矿 | Winch interlocking valve limiting device |
| CN108930681A (en) * | 2018-08-21 | 2018-12-04 | 东莞海特帕沃液压科技有限公司 | A kind of balanced valve of Discrete control |
| CN108953713A (en) * | 2018-08-22 | 2018-12-07 | 东莞海特帕沃液压科技有限公司 | Flow type balanced valve |
-
2010
- 2010-07-02 CN CN2010202453982U patent/CN201858207U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865171A (en) * | 2010-07-02 | 2010-10-20 | 镇江大力液压马达有限责任公司 | Thread cartridge balanced valve |
| CN103613029A (en) * | 2013-11-19 | 2014-03-05 | 枣庄矿业（集团）有限责任公司柴里煤矿 | Winch interlocking valve limiting device |
| CN108930681A (en) * | 2018-08-21 | 2018-12-04 | 东莞海特帕沃液压科技有限公司 | A kind of balanced valve of Discrete control |
| CN108953713A (en) * | 2018-08-22 | 2018-12-07 | 东莞海特帕沃液压科技有限公司 | Flow type balanced valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20180702 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |