CN103104564A - Inserting installation type balance valve - Google Patents
Inserting installation type balance valve Download PDFInfo
- Publication number
- CN103104564A CN103104564A CN2012105381477A CN201210538147A CN103104564A CN 103104564 A CN103104564 A CN 103104564A CN 2012105381477 A CN2012105381477 A CN 2012105381477A CN 201210538147 A CN201210538147 A CN 201210538147A CN 103104564 A CN103104564 A CN 103104564A
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- Prior art keywords
- valve
- spool
- hydraulic fluid
- fluid port
- chamber
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- 238000009434 installation Methods 0.000 title abstract 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 39
- 239000003921 oil Substances 0.000 description 11
- 239000010720 hydraulic oil Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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Abstract
An inserting installation type balance valve comprises a barrel-shaped valve body, an end cover, a threaded plug, a valve core, a valve seat and a piston, wherein the valve body is provided with a first oil mouth and a second oil mouth and is provided with a first cavity and a second cavity along the axial direction, and the end cover and the threaded plug are respectively connected with two ends of the valve body in a sealing mode. A third oil mouth is formed in the rear end of the threaded plug, and a filter screen and a damper are arranged at the third oil mouth position. The valve seat is arranged inside the first cavity of the valve body and located between the first oil mouth and the second oil mouth. The front section of the valve core is matched inside the end cover in a sliding mode, and the rear section of the valve core is matched inside a through hole of the valve seat. The valve core is provided with an inner cavity which penetrates through the valve core in the axial direction, and a steel ball which is matched with the inner cavity of the valve core is arranged inside the valve core. The inner cavity of the valve core is provided with a protruding platform which is used for limiting the steel ball in the axial direction and is provided with a first spring which abuts against the steel ball, and the other end of the first spring abuts against the interior of the end cover. The piston is matched inside the second cavity in a sliding mode, and a ladder end of a piston rod penetrates through a chamber wall between the first cavity and the second cavity and is matched with the inner cavity of the valve core in a sliding mode. The inserting installation type balance valve is simple in structure, compact in size and stable in work.
Description
Technical field
The present invention relates to a kind of hydrovalve, relate in particular to the cartridge balanced valve that is applied in oil hydraulic circuit.
Background technique
In the machinery such as the engineering machinery in modern times, building machinery, widely applied the oil hydraulic circuit that hoists, wherein equilibrium valve is the crucial hydraulic element of controlling oil hydraulic motor work in hoisting circuit, the quality of equilibrium valve performance directly affects the performance of main frame.
Existing equilibrium valve is divided into two kinds of board-like equilibrium valve and cartridge balanced valves by Placement, in order to reduce installing space, improves system reliability in the crane telescopic oil cylinder, generally adopts cartridge balanced valve.The patent of invention that patent No. ZL01139273.8 name is called " a kind of equilibrium valve " provides a kind of equilibrium valve of plug-in type.It comprises main valve, pilot valve, above-mentioned each valve all comprises two chambeies that are positioned at the spool front and back, and wherein main valve comprises valve pocket, main valve plug, and described valve pocket is cylindrical tube, be provided with the first main hydraulic fluid port A and the second main hydraulic fluid port B on the outer side surface of valve pocket, pilot valve is positioned at main valve plug.This equilibrium valve is owing to can directly inserting the oil hydraulic cylinder head, a plurality of spring structures that adopt rigidity to differ due to its main spool spring, mix the skewed slot on main valve plug circular cone side, make control more accurate, sensitive, even in the situation that decompression, guide's spool in main valve plug can be closed rapidly the oil circuit between the second main hydraulic fluid port and the first main hydraulic fluid port, can prevent that load stall from descending, and plays the effect of a hydraulic lock.
But there is following shortcoming in this equilibrium valve:
1, this balancing valve structure is complicated, required precision is high, there is the requirement of coaxality just to have more than six places between each part, and the gap, place that is slidably matched of main valve plug and valve pocket, guide's spool and main valve plug is all minimum, the manufacturing process difficulty is large, during the actual use of product, spool easily blocks, thereby can affect the reliability of host work.
2, guide's spool (nonreturn valve core) of this equilibrium valve is located at main valve plug (balance valve core) inside, main valve plug wired seal request again and between valve pocket, also wired seal request between guide's spool and main valve plug.This just requires place, main valve plug circular cone side that very high hardness will be arranged, preventing the wearing and tearing of part, and main valve plug inner chamber and guide's spool cooperation place hardness relative hanging down again.This has just proposed very high request to heat treatment and the material of main valve plug, has increased processing cost.
3, because guide's spool of this equilibrium valve is located at main valve plug inside, in order to reduce flow resistance, certainly will will increase the size of guide's spool, the size of main valve plug and valve pocket also will become greatly in succession, makes the overall dimensions of equilibrium valve bigger than normal.And the diameter of oil hydraulic cylinder is certain, and the oversize words of equilibrium valve will make the machining allowance of the plug-in opening on oil hydraulic cylinder less than normal, cause certain difficulty to processing.
Summary of the invention
Technical problem to be solved by this invention is: overcome the above-mentioned shortcoming of prior art, a kind of simple in structure, volume compact is provided, the reliable cartridge balanced valve of working stability.
The present invention addresses the above problem the technological scheme that adopts: a kind of cartridge balanced valve comprises being provided with the first hydraulic fluid port and the second hydraulic fluid port and the first chamber being set vertically and piston that the valve body of the tubular of the second chamber, the end cap that is sealedly connected on respectively valve body two ends and screw plug, spool, steel ball, valve seat and cover have the second spring; Described screw plug rear end is provided with the 3rd hydraulic fluid port, and described the 3rd oil port is provided with filter screen and damper, and described valve seat is located in valve body the first chamber, and between the first hydraulic fluid port, the second hydraulic fluid port; Described spool leading portion is slidably tied in end cap, the back segment of described spool is matched with in the through hole of valve seat, described spool is provided with the inner chamber that axially runs through, be provided with the first steel ball that matches with valve core cavity in described spool, and described valve core cavity is provided with for steel ball being carried out the boss of axial limiting, described valve core cavity is provided with the first spring that offsets with the first steel ball, and the other end of described the first spring is butted in end cap; Described piston cunning is assigned in the second chamber, and the stepped end of piston rod is passed the locular wall between the first chamber and the second chamber and is slidably tied in the inner chamber of spool.
Compared with prior art, the invention has the advantages that: this cartridge balanced valve is simple in structure, volume compact, and between each part, coaxality is less, and the place that is slidably matched is less demanding, and manufacturing process is simple.This cartridge balanced valve only is provided with a spool, and some technologic problems that relate to when need not to consider main valve plug and guide's spool plug-in mounting have reduced processing cost.And the size of this equilibrium valve more easily guarantees, can be plugged in easily into the oil hydraulic cylinder head.
Description of drawings
Fig. 1 is the structural representation of a kind of cartridge balanced valve of the present invention.
Fig. 2 is the structural representation of a kind of cartridge balanced valve of the present invention.(when load is risen)
Fig. 3 is the structural representation of a kind of cartridge balanced valve of the present invention.(when load descends)
Fig. 4 is the application hydraulic schematic diagram of a kind of cartridge balanced valve of the present invention.
Shown in Fig. 1-4: 1 end cap, 2 valve bodies, 3 first springs, 4 spring seats, 5 steel balls, 6 spools, 6.1 boss, 7 valve seats, 8 piston rods, 9 second springs, 10 pistons, 11 dampers, 12 screw plugs, 13 filter screens.
A the first hydraulic fluid port, B the second hydraulic fluid port, X, the 3rd hydraulic fluid port.
G the first chamber, H the second chamber.
A the first radial direction through hole, b the second radial direction through hole, c third through-hole.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are further described.
As shown in Figure 1, a kind of cartridge balanced valve comprises being provided with the first hydraulic fluid port A and the second hydraulic fluid port B and the piston 10 that the valve body 2 of the tubular of the first chamber G and the second chamber H, the end cap 1 that is sealedly connected on respectively valve body 2 two ends and screw plug 12, spool 6, valve seat 7 and cover have the second spring being set vertically; Described screw plug 12 rear ends are provided with the 3rd hydraulic fluid port X, and described the 3rd hydraulic fluid port X place is provided with filter screen 13 and damper 11, and described valve seat 7 is located in valve body 2 first chamber G, and between the first hydraulic fluid port A, the second hydraulic fluid port B; Described spool 6 leading portions are slidably tied in end cap 1, the back segment of described spool 6 is matched with in the through hole of valve seat 7, described spool 6 is provided with the inner chamber that axially runs through, be provided with the steel ball 5 that matches with spool 6 inner chambers in described spool 6, and described spool 6 inner chambers are provided with for steel ball being carried out the boss 6.1 of axial limiting, described spool 6 inner chambers are provided with the first spring 3 that offsets with steel ball 5, and the other end of described the first spring 3 is butted in end cap 1; Described piston 10 is sliding to be assigned in the second chamber H, and the stepped end of piston rod 8 is passed the locular wall between the first chamber G and the second chamber H and is slidably tied in the inner chamber of spool 6.
The periphery that described spool 6 back segments match with the through hole of valve seat 7 is conical surface, and the outer conical surface of described spool 6 coordinates with valve seat 7 linear sealings.
Described spool 6 middle parts are provided with the first radial direction through hole a that is communicated with the second hydraulic fluid port B and spool 6 inner chambers, and described spool 6 rear ends are provided with the second radial direction through hole b of connection the first hydraulic fluid port A and spool 6 inner chambers.
The first chamber G of described valve body 2 and the locular wall between the second chamber H are provided with the third through-hole c that is communicated with two chambers.
Working principle of the present invention is as shown in Fig. 2,3:
1, when load is risen, selector valve to be beaten in left position, hydraulic oil enters valve body 2 from the first hydraulic fluid port A, and hydraulic oil enters the second chamber H by the third through-hole c that the first chamber G and the locular wall between the second chamber H of valve body 2 is provided with on the one hand.On the other hand, hydraulic oil acts on the impacting force that overcomes the first spring 3 on spool 6, and spool 6 is moved to left, and at this moment, hydraulic oil can flow to the second hydraulic fluid port B by the first hydraulic fluid port A, and enters the rodless cavity B1 of oil hydraulic cylinder, rises thereby promote load.
2, when load descends, selector valve is got to right position, hydraulic oil is flowed into cavity and acts on piston 11 by the through hole on filter screen 13 and damper 11 by the 3rd hydraulic fluid port X, and the active force pushing piston 10 that overcomes the second spring 9 moves to left, the active force that piston rod 8 external parts of piston 10 first push up steel ball 5 and overcome the first spring 3 backs down steel ball 5, at this moment, the hydraulic oil of the second hydraulic fluid port B flows into spool 6 inner chambers by the first radial direction through hole a at spool 6 middle parts, and flow into the first hydraulic fluid port A by the second radial direction through hole b of spool 6 rear ends, thereby make the load slow decreasing.Piston 10 continues to move to left, and piston rod 8 external parts of piston 10 push up on spool 6, and makes spool 6 break away from valve seat 7, and at this moment the hydraulic oil of the second hydraulic fluid port B flows into the first hydraulic fluid port A by the gap between spool 6 and valve body 2 again, thereby makes the load rate of descent accelerate.
3, when loadlock aloft the time, selector valve is beaten at meta, the 3rd hydraulic fluid port X takes back fuel tank, the path of cut-out pressure source and selector valve A1, spool 6 makes spool 6 reset under the pressure-acting of the first spring 3 and load generation, the outer conical surface of spool 6 back segments matches with valve seat 7 again, form linear sealing, cut off the path between the first hydraulic fluid port A and the second hydraulic fluid port B, with loadlock aloft.
Claims (4)
1. cartridge balanced valve comprises being provided with the first hydraulic fluid port (A) and the second hydraulic fluid port (B) and the first chamber (G) being set vertically and piston (10) that the valve body (2) of the tubular of the second chamber (H), the end cap (1) that is sealedly connected on respectively valve body (2) two ends and screw plug (12), spool (6), valve seat (7) and cover have the second spring; Described screw plug (12) rear end is provided with the 3rd hydraulic fluid port (X), described the 3rd hydraulic fluid port (X) locates to be provided with filter screen (13) and damper (11), it is characterized in that: described valve seat (7) is located in valve body (2) first chambers (G), and is positioned between the first hydraulic fluid port (A), the second hydraulic fluid port (B); Described spool (6) leading portion is slidably tied in end cap (1), the back segment of described spool (6) is matched with in the through hole of valve seat (7), described spool (6) is provided with the inner chamber that axially runs through, be provided with the steel ball (5) that matches with spool (6) inner chamber in described spool (6), and described spool (6) inner chamber is provided with for the boss (6.1) that steel ball is carried out axial limiting, described spool (6) inner chamber is provided with the first spring (3) that offsets with steel ball (5), and the other end of described the first spring (3) is butted in end cap (1); Described piston (10) is sliding to be assigned in the second chamber (H), and the stepped end of piston rod (8) is passed the locular wall between the first chamber (G) and the second chamber (H) and is slidably tied in the inner chamber of spool (6).
2. a kind of cartridge balanced valve according to claim 1, it is characterized in that: described spool (6) back segment is conical surface with the periphery that the through hole of valve seat (7) matches, and the outer conical surface of described spool (6) coordinates with valve seat (7) linear sealing.
3. a kind of cartridge balanced valve according to claim 1, it is characterized in that: be provided with the first radial direction through hole (a) that is communicated with the second hydraulic fluid port (B) and spool (6) inner chamber in the middle part of described spool (6), its rear end is provided with the second radial direction through hole (b) that is communicated with the first hydraulic fluid port (A) and spool (6) inner chamber.
4. a kind of cartridge balanced valve according to claim 1 is characterized in that: first chamber (G) of described valve body (2) and the locular wall between the second chamber (H) are provided with the third through-hole (c) that is communicated with two chambers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210538147.7A CN103104564B (en) | 2012-12-13 | 2012-12-13 | Inserting installation type balance valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210538147.7A CN103104564B (en) | 2012-12-13 | 2012-12-13 | Inserting installation type balance valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103104564A true CN103104564A (en) | 2013-05-15 |
| CN103104564B CN103104564B (en) | 2015-07-01 |
Family
ID=48312679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210538147.7A Expired - Fee Related CN103104564B (en) | 2012-12-13 | 2012-12-13 | Inserting installation type balance valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103104564B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948148A (en) * | 2015-06-30 | 2015-09-30 | 中国石油大学(华东) | Stepless flow control device |
| CN108252973A (en) * | 2018-01-20 | 2018-07-06 | 邵立坤 | A kind of plug-in direct acting proportional pressure-reducing valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4002755A1 (en) * | 1990-01-31 | 1991-08-01 | Daimler Benz Ag | Automatic distributor valve controlling oil supply - has spool valve actuated by inlet pressure to apportion pump output between first and second user |
| CN101435446A (en) * | 2007-11-14 | 2009-05-20 | 上海立新液压有限公司 | Balance valve |
| CN201475070U (en) * | 2009-08-21 | 2010-05-19 | 宁波汉商液压有限公司 | Cartridge balance valve |
| CN201547364U (en) * | 2009-11-06 | 2010-08-11 | 周重威 | Liquid-control flow valve for ultra-high-pressure double-pole pump |
| EP2466155A1 (en) * | 2010-12-15 | 2012-06-20 | HAWE Hydraulik SE | Hydraulically unlocked return-seat valve |
| CN203051273U (en) * | 2012-12-13 | 2013-07-10 | 陈磊 | Plug-in mounting type balance valve |
-
2012
- 2012-12-13 CN CN201210538147.7A patent/CN103104564B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4002755A1 (en) * | 1990-01-31 | 1991-08-01 | Daimler Benz Ag | Automatic distributor valve controlling oil supply - has spool valve actuated by inlet pressure to apportion pump output between first and second user |
| CN101435446A (en) * | 2007-11-14 | 2009-05-20 | 上海立新液压有限公司 | Balance valve |
| CN201475070U (en) * | 2009-08-21 | 2010-05-19 | 宁波汉商液压有限公司 | Cartridge balance valve |
| CN201547364U (en) * | 2009-11-06 | 2010-08-11 | 周重威 | Liquid-control flow valve for ultra-high-pressure double-pole pump |
| EP2466155A1 (en) * | 2010-12-15 | 2012-06-20 | HAWE Hydraulik SE | Hydraulically unlocked return-seat valve |
| CN203051273U (en) * | 2012-12-13 | 2013-07-10 | 陈磊 | Plug-in mounting type balance valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948148A (en) * | 2015-06-30 | 2015-09-30 | 中国石油大学(华东) | Stepless flow control device |
| CN104948148B (en) * | 2015-06-30 | 2018-02-02 | 中国石油大学(华东) | A kind of stepless volume control device |
| CN108252973A (en) * | 2018-01-20 | 2018-07-06 | 邵立坤 | A kind of plug-in direct acting proportional pressure-reducing valve |
| CN108252973B (en) * | 2018-01-20 | 2020-07-14 | 上海欧特莱阀门机械有限公司 | Plug-in type direct-acting proportional pressure reducing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103104564B (en) | 2015-07-01 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO JIANGDONG SIKAO TECHNOLOGY SERVICE CO., LTD Free format text: FORMER OWNER: CHEN LEI Effective date: 20150414 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315137 NINGBO, ZHEJIANG PROVINCE TO: 315043 NINGBO, ZHEJIANG PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20150414 Address after: 315043, No. 4, No. 26, Dongfang business center, Jiangdong District, Zhejiang, Ningbo Applicant after: Ningbo Jiangdong Sikao Technology Service Co., Ltd. Address before: 315137, Zhejiang, Ningbo province Yinzhou District Yunlong Town Di village Di River District Applicant before: Chen Lei |
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| 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: 20150701 Termination date: 20151213 |
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| EXPY | Termination of patent right or utility model |