CN207961114U - A kind of super-pressure balance carries valve - Google Patents
A kind of super-pressure balance carries valve Download PDFInfo
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- CN207961114U CN207961114U CN201820348828.XU CN201820348828U CN207961114U CN 207961114 U CN207961114 U CN 207961114U CN 201820348828 U CN201820348828 U CN 201820348828U CN 207961114 U CN207961114 U CN 207961114U
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- spring
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- 239000012530 fluid Substances 0.000 claims abstract description 55
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 230000006378 damage Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 39
- 230000007423 decrease Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000012856 packing Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model is related to a kind of super-pressure balances to carry valve,Including the upper and lower and external valve chamber being connected to being arranged in valve body,Spool is movably provided in valve pocket,Spool both ends are arranged with upper seal support and bottom sealing socket respectively,Sealed set has pressure spring device and conical valve seat spring assembly to the upper and lower side of valve chamber respectively,Upper chamber is provided between spool and upper seal support,Upper chamber is connected to upper hydraulic fluid port,Lower chamber is connected to lower hydraulic fluid port,It is connected to by the channel in spool between upper chamber and lower chamber,Valve pocket also forms an intermediate hydraulic pressure chamber in spool intermediate ends,Intermediate hydraulic pressure chamber is connected with pilot control opening and logical hydraulic fluid port,The utility model is mounted on oil cylinder,It can be automatically turned on when in-oil cylinder pressure is more than set pressure,Lay down excessively high oil pressure,The function of symmetrical load is played when multiple oil cylinders jack a load simultaneously,Protect oil cylinder from overload and its destruction generated to oil cylinder,Increase the service life of oil cylinder,Improve economy.
Description
Technical field
The utility model is related to a kind of super-pressure balances to carry valve, belong to hydraulic control valve technical field.
Background technology
When with multiple (4 or 4 or more) one weight of cylinder jacking, it will usually synchronous and load equalization ask occur
When topic, especially oil cylinder band carry decline, it is more easy to overload phenomenon occur；When namely an oil cylinder declines slightly fast, most load
Lotus will be pressed onto on another cornerwise two oil cylinder, so that oil cylinder working-pressure is increased by about one time, to ensure oil cylinder safety, it has to
The load-bearing capacity of oil cylinder is reduced by one times of use, such as：1000 tons of workpiece of jacking, at least with four 500 tons of oil cylinder, very
It is uneconomical, while overload can also cause partial structurtes to damage workpiece.
In the prior art hydraulic control circuit is jacked usually using 4 points of hydraulic control one-way valve；When oil cylinder band is carried and is fallen,
The unlocking condition of hydraulic control one-way valve is：PB>PAO/6.5；The lighter oil cylinder of load, hydraulic control one-way valve first turn on, and load is heavier
Oil cylinder, hydraulic control one-way valve are then opened a little later, this causes the jacking cylinder load of late unlatching to be further aggravated, and makes hydraulic control one-way valve more
Hardly possible is opened, until major part load is fallen on this cornerwise two oil cylinder, it is seen that use 4 points of hydraulic control one-way valve
Hydraulic control circuit is jacked, when carrying decline per sub-band, can all cause unbalance loading.
Utility model content
The technical problems to be solved in the utility model is：In order to overcome the problems referred above, it provides and a kind of preventing the super of overload
High-pressure balancing carries valve.
Technical solution adopted by the utility model to solve its technical problems is：
A kind of super-pressure balance carries valve, including upper and lower and the external valve chamber being connected to, the valve chamber being arranged in valve body
It is inside fixedly installed valve pocket, spool is movably provided in the valve pocket, the spool both ends are arranged with upper seal support respectively
And bottom sealing socket, sealed set has pressure spring device and conical valve seat spring assembly to the upper and lower side of the valve chamber respectively, described
Spool contradicts on pressure spring device and conical valve seat spring assembly respectively up and down, is arranged between the spool and upper seal support
There are upper chamber, the upper chamber to be connected to upper hydraulic fluid port, is provided between the bottom sealing socket and conical valve seat spring assembly
Lower chamber, the lower chamber is connected to lower hydraulic fluid port, by spool between the upper chamber and the lower chamber
Channel is connected to, and is blocked channel when seal spool contradicts on conical valve seat spring assembly, the valve pocket is also among spool
End forms an intermediate hydraulic pressure chamber, and the intermediate hydraulic pressure chamber is connected with pilot control opening and logical hydraulic fluid port.
Preferably, the pressure spring device includes the spring shield for being sealingly disposed in the valve chamber upper end, the spring shield
It is provided with the upper spring seat and lower spring cup of pressure spring and the pressure spring both ends, the lower spring cup top pressure is in the valve
The upper end of core, the upper spring seat upper end are provided with adjusting screw.
Preferably, the conical valve seat spring assembly includes the pedestal for being sealingly disposed in the valve chamber lower end, the pedestal
The cone valve valve seat being arranged in interior setting support spring and the support spring, the cone valve valve seat can be with the cone of the spool lower end
The sealing of shape valve contradicts.
Preferably, the logical hydraulic fluid port and lower hydraulic fluid port are arranged for board-like connection, and are arranged on the same face.
Preferably, the upper hydraulic fluid port is tubular type connection setting.
Preferably, the pilot control opening is also tubular type connection setting.
Preferably, the valve chamber is also communicated with one or more detection mouths.
Preferably, the junction of the valve pocket and spool is provided with sealing ring.
Preferably, the upper hydraulic fluid port, lower hydraulic fluid port, pilot control opening and logical oil port are also equipped with sealing ring.
The utility model has the beneficial effects that：
First function is the load pressure of balancing cylinder, makes to glide with the unlikely decompression of jacking cylinder for carrying decline, even if
Workpiece will not be allowed to fall in pipeline rupture.Then either rise or decline and all become oil inlet speed governing, safety increases.
Second function is that oil cylinder is protected not overload, and when in-oil cylinder pressure is more than set pressure, superelevation flattens
Weighing apparatus carries valve and can automatically turn on, and lays down excessively high oil pressure, and protection oil cylinder increases the load capacity of oil cylinder from overload, is promoted
Economy.
Third function is that heavy duty is first opened, when can make multi-cylinder parallel, each cylinder load automatic equalization.Board-like super-pressure balance is equal
Carrying valve can be directly installed on oil cylinder, reduce the accident that external pipe is brought to the maximum extent.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the sectional view that super-pressure balance described in the utility model carries valve one embodiment；
Fig. 2 is that super-pressure balance described in the utility model carries valve application catenation principle figure；
Fig. 3 is the discharge characteristic figure that super-pressure balance described in the utility model carries valve；
Fig. 4 is that super-pressure balance described in the utility model load valve is operated in oil inlet jacking status diagram；
Fig. 5 is that super-pressure balance load valve described in the utility model is operated in packing state schematic diagram；
Fig. 6 is that super-pressure balance described in the utility model load valve is operated in ratio control landing status diagram；
Fig. 7 is that super-pressure balance load valve described in the utility model is operated in pressure overload status diagram.
It is marked in figure：1- valve bodies, 2- pressure spring devices, 3- bottom sealing sockets, 4- upper seal supports, 5- spools, 6- sealing rings,
7- valve pockets, 8- sealing rings, 9- cone valve valve seats, 10- support springs, 11- conical valve seat spring assemblies, 12- pedestals, 13- upper hydraulic fluid ports,
14- pilot control openings, hydraulic fluid port under 15-, 21- pressure springs, 22- upper spring seats, 23- lower spring cups, 24- adjusting screws, 25- bullets
Spring cover, the channels 51-, 52- cone valves.
Specific implementation mode
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
Embodiment 1
A kind of super-pressure balance described in the utility model as shown in Figure 1 carries valve, including be arranged in valve body 1 up and down
The valve chamber being connected to outside, the valve chamber is preferably generally cylindrical, and valve pocket 7, the valve are fixedly installed in the valve chamber
Movably be provided with spool 5 in set 7, the spool 5 can moving up and down in 7 interior sealing of valve pocket, that is, ensure that leakproofness again may be used
It moves up and down, 5 both ends of the spool are arranged with upper seal support 4 and bottom sealing socket 3 respectively, and spool 5 can be close under from upper seal support 4
It is stretched out in envelope seat 3, and its contact surface is sealing no leakage, sealed set has pressure spring dress to the upper and lower side of the valve chamber respectively
2 and conical valve seat spring assembly 11 are set, about 5 spool is contradicted respectively in pressure spring device 2 and conical valve seat spring dress
It sets on 11, the pressure spring device 2 is used to adjust the pressure of top pressure spool 5, and pressure value can be adjusted as needed, described
Conical valve seat spring assembly 11 is used to provide resilient support to spool 5 in bottom end, is arranged between the spool 5 and upper seal support 4
There are upper chamber, the upper chamber to be connected to upper hydraulic fluid port 13, after the location and shape of the upper chamber are by oil inlet in Fig. 4
Working state figure can be seen that connect with upper hydraulic fluid port 13 is upper chamber in 5 upper side position of spool, the bottom sealing socket
Lower chamber is provided between 3 and conical valve seat spring assembly 11, the lower chamber is connected to lower hydraulic fluid port 15, the lower hydraulic pressure
Room be similarly in Fig. 4 with lower 15 communicating position of hydraulic fluid port, pass through between the upper chamber and the lower chamber logical in spool 5
Road 51 is connected to, and blocks channel 51 when the sealing of spool 5 contradicts on conical valve seat spring assembly 11, when spool 5 rises,
Between be connected to by channel 51, the valve pocket 7 also forms an intermediate hydraulic pressure chamber, the intermediate hydraulic pressure chamber in 5 intermediate ends of spool
It is connected with pilot control opening 14 and logical hydraulic fluid port, wherein back side of the logical hydraulic fluid port in diagram, therefore can not be shown in figure, in figure 6
It can be seen that the position for the intermediate hydraulic pressure chamber being connect with pilot control opening 14, and the position of corresponding logical hydraulic fluid port, preferably implementing
In mode, the spool 5, which declines to contradict, can block when on the step of intermediate hydraulic pressure chamber between pilot control opening 14 and logical hydraulic fluid port
Connection, when spool 5 rise, then be connected between it.
The operation principle that the utility model super-pressure balance carries valve is provided below：
As upper hydraulic fluid port AO and lower hydraulic fluid port A1 oil inlets, as shown in the catenation principle figure of Fig. 2, super-pressure balance carries the work of valve
With such as same check valve.As upper hydraulic fluid port AO and lower hydraulic fluid port A1 fuel-displaced, it is necessary to rely on oil pressure PBOpen the cone valve of spool 5, oil
It could be flowed out from lower hydraulic fluid port A1 through upper hydraulic fluid port AO, since the cone valve under spool 5 is there are difference in areas Δ A, work as PA1On difference in areas Δ A
Active force be more than pressure spring device 2 spring force when, cone valve will be opened, some pressure of releasing play overvoltage protection
Effect, as well as cone valve, there are difference in areas, work as PA1When larger, the Opening pressure P that needsBCan be smaller, it plays automatic equal
The effect for the oil cylinder load that weighs.
By the above operation principle, the utility model has the following advantages：
First function is the load pressure of balancing cylinder, makes to glide with the unlikely decompression of jacking cylinder for carrying decline, even if
Workpiece will not be allowed to fall in pipeline rupture, then either rise or decline all becomes oil inlet speed governing, safety increases.
Second function is that oil cylinder is protected not overload, and when in-oil cylinder pressure is more than set pressure, superelevation flattens
Weighing apparatus carries valve and can automatically turn on, and lays down excessively high oil pressure, protection oil cylinder is from overload.
Embodiment 2
On the basis of the super-pressure balance described in embodiment 1 carries valve, the pressure spring device 2 includes being sealingly disposed in
The spring shield 25 of the valve chamber upper end, the spring shield 25 are provided with the upper bullet at 21 both ends of pressure spring 21 and the pressure spring
Spring abutment 22 and lower spring cup 23,23 top pressure of the lower spring cup is in the upper end of the spool 5, the setting of 22 upper end of the upper spring seat
There is adjusting screw 24, the pressure value of pressure spring 21 can be adjusted by screwing adjusting screw 24, providing no pressure value needs
It wants, in the present embodiment, wherein 72 balance the set pressure (Mpa) for carrying valve for super-pressure, therefore, super-pressure balance carries valve
Unlocking condition can approximate expression be：PB>(72-PAO)/24.1, discharge characteristic figure are as shown in Figure 3.
In a preferred embodiment, the conical valve seat spring assembly 11 includes being sealingly disposed in the valve chamber lower end
Pedestal 12, the pedestal 12 is interior to be arranged the cone valve valve seat 9 being arranged in support spring 10 and the support spring 10, the cone valve valve
Seat 9 can seal with the cone valve 52 of 5 lower end of the spool and contradict, and after sealing contradicts, can lead in channel 51 in blocking spool 5
It is logical.
In a preferred embodiment, the logical hydraulic fluid port and lower hydraulic fluid port A1 are arranged for board-like connection, and are arranged same
On a face.When that can make multi-cylinder parallel, each cylinder load automatic equalization, board-like super-pressure balance, which carries valve, can be directly installed on oil
On cylinder, reduce the accident that external pipe is brought to the maximum extent.
In a preferred embodiment, the upper hydraulic fluid port AO is tubular type connection setting, but is also not limited to this, also be can be used
Other connection types.
In a preferred embodiment, the pilot control opening 14 is also tubular type connection setting, but is also not limited to this, also
Other connection types can be used.
In a preferred embodiment, the valve chamber is also communicated with one or more detection mouths, is arranged in the present embodiment
Detection mouth C1 and detection mouth C0, wherein detection mouth C1 are preferably connected to lower hydraulic fluid port A1, and pressure gauge or pressure sensing are connect for user
Device.
In a preferred embodiment, the valve pocket 7 and the junction of spool 5 are provided with sealing ring 6, increase the close of connection
Feng Xing prevents leakage.
In a preferred embodiment, the upper hydraulic fluid port AO, lower hydraulic fluid port A1, pilot control opening 14 and logical oil port are also provided with
There is sealing ring 8, increases the leakproofness of connection, prevent leakage.
Embodiment 3
A kind of equal support method of balance carrying valve using super-pressure balance described above, including：
S1：Oil inlet jacks state, as shown in Figure 4：Oil pushes cone from A0 mouthfuls of inflows of upper hydraulic fluid port by the channel 51 of spool 5
Shape seating spring device 11 is flowed into lower hydraulic fluid port A1；
S2：Ratio controls landing state, as shown in Figure 6：Enter from pilot control opening B0 control fluid, black portions in figure
It for fluid, pushes spool 5 to be adjusted up, overcomes pressure spring device 2, spool 5 is made to generate ratio with conical valve seat spring assembly 11
The opening of example so that lower hydraulic fluid port A1 pressure oil ratios upper hydraulic fluid port A0 is flowed into, with the control oil pressure of pilot control opening B0
Power increases, and the ratio opening of generation is bigger, and the speed of the pressure oil inflow upper hydraulic fluid port A0 of lower hydraulic fluid port A1 is faster, proportional controllable tune
Section；
S3：Packing state, as shown in Figure 5：Pilot control opening B0 enters without fluid, and pressure spring device 2 pushes down spool
5, spool 5 is sealed with conical valve seat spring assembly 11, and hydraulic fluid port A1 pressure oils can not be flowed into upper hydraulic fluid port A0 at present for this；
S4：Pressure carries state, as shown in Figure 7：As heavily loaded unbalance loading P values ＞ A1, even if pilot control opening B0 fluid
Without work, P values are more than the pressure regulation value of pressure spring device 2, and the pressure of generation up adjusts spool 5, makes spool 5 and cone valve
Seat spring assembly 11 generates the opening of ratio so that be flowed into upper hydraulic fluid port A0 to lower hydraulic fluid port A1 pressure oil ratios, when P values are close or
After the pressure regulation value of pressure spring device 2, spool 5 is closed with conical valve seat spring assembly 11, comes back to packing state.
Above step S1-S3 without sequence limit, can be ranked up according to need of work in actual use, step S4 with
Step S3 is used in combination.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to which its technology is determined according to right
Property range.
Claims (9)
1. a kind of super-pressure balance carries valve, which is characterized in that including the upper and lower and external valve chamber being connected to being arranged in valve body,
It is fixedly installed valve pocket in the valve chamber, spool is movably provided in the valve pocket, the spool both ends are arranged with respectively
Upper seal support and bottom sealing socket, sealed set has pressure spring device and conical valve seat spring dress to the upper and lower side of the valve chamber respectively
It sets, the spool contradicts on pressure spring device and conical valve seat spring assembly respectively up and down, the spool and upper seal support
Between be provided with upper chamber, the upper chamber is connected to upper hydraulic fluid port, the bottom sealing socket and conical valve seat spring assembly it
Between be provided with lower chamber, the lower chamber is connected to lower hydraulic fluid port, passes through between the upper chamber and the lower chamber
Channel connection in spool, blocks channel when seal spool contradicts on conical valve seat spring assembly, the valve pocket also exists
Spool interlude forms an intermediate hydraulic pressure chamber, and the intermediate hydraulic pressure chamber is connected with pilot control opening and other a-road-through hydraulic fluid port.
2. super-pressure balance as described in claim 1 carries valve, which is characterized in that the pressure spring device includes that sealing is set
The spring shield in the valve chamber upper end is set, the spring shield is provided with the upper spring seat of pressure spring and the pressure spring both ends
And lower spring cup, the lower spring cup top pressure are provided with adjusting screw in the upper end of the spool, the upper spring seat upper end.
3. super-pressure balance as described in claim 1 carries valve, which is characterized in that the conical valve seat spring assembly includes close
The pedestal in the valve chamber lower end is arranged in envelope, and the cone valve valve being arranged in support spring and the support spring is arranged in the pedestal
Seat, the cone valve valve seat can be contradicted with the conical valve seal of the spool lower end.
4. super-pressure as described in claim 1 balance carries valve, which is characterized in that the logical hydraulic fluid port and lower hydraulic fluid port are board-like company
Setting is connect, and is arranged on the same face.
5. super-pressure balance as described in claim 1 carries valve, which is characterized in that the upper hydraulic fluid port is tubular type connection setting.
6. super-pressure balance as described in claim 1 carries valve, which is characterized in that the pilot control opening is also that tubular type connects
Setting.
7. super-pressure balance as described in claim 1 carries valve, which is characterized in that the valve chamber is also communicated with one or more
Detection mouth.
8. super-pressure balance as described in claim 1 carries valve, which is characterized in that the junction of the valve pocket and spool is arranged
There is sealing ring.
9. super-pressure balance as described in claim 1 carries valve, which is characterized in that the upper hydraulic fluid port, lower hydraulic fluid port, pilot control
Mouth and logical oil port are also equipped with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820348828.XU CN207961114U (en) | 2018-03-15 | 2018-03-15 | A kind of super-pressure balance carries valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820348828.XU CN207961114U (en) | 2018-03-15 | 2018-03-15 | A kind of super-pressure balance carries valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207961114U true CN207961114U (en) | 2018-10-12 |
Family
ID=63742796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820348828.XU Withdrawn - After Issue CN207961114U (en) | 2018-03-15 | 2018-03-15 | A kind of super-pressure balance carries valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207961114U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317116A (en) * | 2018-03-15 | 2018-07-24 | 无锡市思进工业自动化设备有限公司 | A kind of super-pressure balance carries valve and its method |
| CN112855639A (en) * | 2019-11-27 | 2021-05-28 | 哈威液压股份公司 | Load holding valve, load holding valve group and method for assembling load holding valve |
-
2018
- 2018-03-15 CN CN201820348828.XU patent/CN207961114U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317116A (en) * | 2018-03-15 | 2018-07-24 | 无锡市思进工业自动化设备有限公司 | A kind of super-pressure balance carries valve and its method |
| CN108317116B (en) * | 2018-03-15 | 2024-03-26 | 无锡市思进工业自动化设备有限公司 | Ultrahigh-pressure balance load balancing valve and method thereof |
| CN112855639A (en) * | 2019-11-27 | 2021-05-28 | 哈威液压股份公司 | Load holding valve, load holding valve group and method for assembling load holding valve |
| CN112855639B (en) * | 2019-11-27 | 2023-06-06 | 哈威液压股份公司 | Load holding valve, load holding valve block and method for assembling a load holding 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: 20181012 Effective date of abandoning: 20240326 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20181012 Effective date of abandoning: 20240326 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |