CN202493513U - Pressure compensator used for load sensitive multi-way valve - Google Patents
Pressure compensator used for load sensitive multi-way valve Download PDFInfo
- Publication number
- CN202493513U CN202493513U CN2012200865629U CN201220086562U CN202493513U CN 202493513 U CN202493513 U CN 202493513U CN 2012200865629 U CN2012200865629 U CN 2012200865629U CN 201220086562 U CN201220086562 U CN 201220086562U CN 202493513 U CN202493513 U CN 202493513U
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- pressure
- way valve
- load
- valve
- compensator
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Abstract
The utility model discloses a pressure compensator used for a load sensitive multi-way valve. When multi-way valve pieces are operated simultaneously, through interaction of a load pressure, an inlet pressure, a highest load pressure and a total inlet pressure of each valve piece, when the load of one valve piece is lower than the highest load, the inlet pressure is throttled and decompressed, so that the pressure difference between the both ends of an oil inlet throttle port is consistent to the pressure difference between the both ends of the oil inlet throttle port of the highest load piece, thus the pressure differences of both ends of the oil inlet throttle ports of the valve pieces are consistent. The flow of each working valve piece is only related to an opening area of the oil inlet throttle port and is not related to the load, so that the action harmony of the multi-way valve pieces can be ensured when the multi-way valve pieces work simultaneously.
Description
Technical field
The utility model belongs to the hydraulic control field, particularly relates to a kind of load sensing multi-way valve and uses pressure compensator.
Background technique
The hydraulic control multi-way valve is carrying out multichannel when moving simultaneously, if there is not compensator, under the identical situation of oil-feed opening area, fluid can flow to the lower valve block of induced pressure morely.Known compensator has two kinds; All be used for load sensing multi-way valve: a kind of is the fixing compensator of pressure reduction; Be also referred to as Fixed differential reducing valve, the active areas that have two effects to equate: this valve block induced pressure ls1 and this valve block inlet pressure P1, when force value that P1-ls1 sets greater than spring; P1 can be by expenditure and pressure, and P1-ls1 is limited near the setting value; The shortcoming of this compensator is, to move required flow simultaneously bigger when multichannel, and when surpassing the flow that pump can provide, compensator two ends pressure reduction does not reach the pressure reduction of spring setting, and compensator is with ineffective.Another kind of compensator is " ludv " technology of German BOSCH-REXROTH company, and it is not fixing the compensator of pressure reduction, is installed in the back of each Reversing valve plate meter in mouth, and also title " valve post-compensators " also can play a role under the situation of undercurrent amount.Its shortcoming is that corresponding valve body oil channel structure is complicated, causes the pressure loss bigger
Summary of the invention
The utility model provides a kind of load sensing multi-way valve to use pressure compensator.It is characterized in that: this compensator is installed one in each Reversing valve plate; Have four equal active areas; Its actuating pressure is respectively: this valve block induced pressure ls1, this valve block inlet pressure P1, highest load pressure ls, general import pressure P, and satisfy following equality according to equilibrium of forces:
P1-ls1＝P-ls
Carrying out the multichannel valve block when operating simultaneously; Interaction through each valve block induced pressure, inlet pressure and highest load pressure, general import pressure; When certain valve block load is lower than high capacity; Its inlet pressure is carried out expenditure and pressure, and the pressure reduction that makes its meter in mouth two ends is consistent with the pressure reduction at high capacity sheet meter in mouth two ends, thereby makes the pressure reduction at each valve block meter in mouth two ends all be consistent.Like this, only relevant through the flow of each work valve block, and irrelevant with load with the opening area of its meter in mouth, thus the coordination property when having guaranteed that the multi-way valve multi-disc is worked simultaneously.
Because the utility model is not set fixedly pressure reduction, under the situation of undercurrent amount, can bring into play compensating action yet, and corresponding valve flowing channel is simple, and the overcurrent loss is less, easily manufactured.
Description of drawings
Fig. 1,2 is the utility model concrete structure figure:
Wherein, middle solid line is painted part and is compensator, and peripheral double dot dash line is partly by being joined valve body.P, P1, ls1, ls be representative pressure cavity volume and pressure thereof respectively, and wherein P is a general import pressure, and P1 is this valve block inlet pressure, and ls1 is this valve block induced pressure, and ls is system's highest load pressure; A, B represent two switching-over output oil pockets, and T represents oil back chamber.
Embodiment
Wherein, middle solid line is painted part and is compensator, and peripheral double dot dash line is partly by being joined valve body.P, P1, ls1, ls be representative pressure cavity volume and pressure thereof respectively, and wherein P is a general import pressure, and P1 is this valve block inlet pressure, and ls1 is this valve block induced pressure, and ls is system's highest load pressure; A, B represent two switching-over output oil pockets, and T represents oil back chamber.
Logical endoporus during the compensator dashed middle line is represented, wherein one-way valve is equipped with at this place of individual event valve symbolic representation of an end, and specific constructive form is not limit, and flows to from ls1 to ls.Compensator and valve body have three cylinder matching surfaces, and the two ends diameter is d, and mid diameter is D, and have following relation:
D
2＝2*d
2
Thereby make the active area of P, P1, ls1, ls equate, and have following equilibrium relation according to action direction:
P1-ls1＝P-ls
Like this, carrying out the multichannel valve block when operating simultaneously, when the induced pressure ls1 of this valve block is higher than other valve blocks; This pressure is output as highest load pressure ls through reversing valve on the one hand; Promote compensator on the other hand and move up, P to P1 opens fully, does not have compensating action; When this valve block induced pressure ls1 is lower than other valve blocks, closed check valve, compensator moves down under the effect of upper end highest load pressure ls, and P to P1 opening reduces, and P1 pressure reduces, and finally reaches following balance:
P1-ls1＝P-ls
Promptly the pressure reduction at these sheet meter in mouth two ends is consistent with the pressure reduction at high capacity sheet meter in mouth two ends, thereby the pressure reduction at each valve block meter in mouth two ends all is consistent.Like this, only relevant through the flow of each work valve block, and irrelevant with load with the opening area of its meter in mouth, thus the coordination property when having guaranteed that the multi-way valve multi-disc is worked simultaneously.
Alternatively, the one-way valve of the utility model part can adopt structural type as shown in Figure 2.Wherein, the hole upper end closed that is communicated with ls1 in the middle of the compensator, the side is got through with aperture.When the induced pressure ls1 of this valve block is higher than other valve blocks, promote compensator and move up, during to position, approaching the top, the side aperture exposes, and ls1 is communicated to ls, and P to P1 opens fully simultaneously, does not have compensating action; When this valve block induced pressure ls1 was lower than other valve blocks, compensator moved down under the effect of upper end highest load pressure ls, ls1 to ls pathway closure, and P to P1 opening reduces simultaneously, and P1 pressure reduces, and finally reaches following balance:
P1-ls1＝P-ls
Thereby the pressure reduction at each valve block meter in mouth two ends all is consistent.
Because the utility model is not set fixedly pressure reduction, under the situation of undercurrent amount, can bring into play compensating action yet, and corresponding valve flowing channel is simple, and the overcurrent loss is less, easily manufactured.
Claims (1)
1. the utility model relates to a kind of load sensing multi-way valve and uses pressure compensator; It is characterized in that: this compensator has four equal active areas, and its actuating pressure is respectively: this valve block induced pressure, this valve block inlet pressure, multi-way valve highest load pressure, multi-way valve general import pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200865629U CN202493513U (en) | 2012-03-09 | 2012-03-09 | Pressure compensator used for load sensitive multi-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200865629U CN202493513U (en) | 2012-03-09 | 2012-03-09 | Pressure compensator used for load sensitive multi-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493513U true CN202493513U (en) | 2012-10-17 |
Family
ID=46999746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200865629U Expired - Fee Related CN202493513U (en) | 2012-03-09 | 2012-03-09 | Pressure compensator used for load sensitive multi-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493513U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106715924A (en) * | 2014-10-27 | 2017-05-24 | Ｋｙｂ株式会社 | Load-sensing valve device |
-
2012
- 2012-03-09 CN CN2012200865629U patent/CN202493513U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106715924A (en) * | 2014-10-27 | 2017-05-24 | Ｋｙｂ株式会社 | Load-sensing valve device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG BOYUAN OPTOELECTRONIC MATERIALS CO., LTD. Free format text: FORMER OWNER: YANG YANG Effective date: 20141203 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Yang Inventor after: Ci Lijie Inventor after: Yang Lihua Inventor after: Zhang Bin Inventor before: Yang Yang Inventor before: Yang Lihua Inventor before: Zhang Bin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YANG YANG YANG LIHUA ZHANG BIN TO: YANG YANG CI LIJIE YANG LIHUA ZHANG BIN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141203 Address after: Room 2755, scientific research building, No. 525, show Road, Ji'nan hi tech Development Zone, Shandong 250101, China Patentee after: Shandong Bo Yuan photoelectric material Co., Ltd Address before: 526 room 2755, No. 250101, show Road, Ji'nan hi tech Development Zone, Shandong, China Patentee before: Yang Yang |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20150309 |
|
| EXPY | Termination of patent right or utility model |