CN201496332U - Manual proportional operating valve with large diameter - Google Patents
Manual proportional operating valve with large diameter Download PDFInfo
- Publication number
- CN201496332U CN201496332U CN2009202282793U CN200920228279U CN201496332U CN 201496332 U CN201496332 U CN 201496332U CN 2009202282793 U CN2009202282793 U CN 2009202282793U CN 200920228279 U CN200920228279 U CN 200920228279U CN 201496332 U CN201496332 U CN 201496332U
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- valve
- manual proportional
- oil
- proportional reversing
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Abstract
The utility model provides a manual proportional operating valve with large diameter. The manual proportional operating valve consists of a manual proportional reversing valve, an oil inlet block and an oil returning block. The oil inlet block is connected with a main oil inlet of the manual proportional reversing valve. The oil returning block is connected with a main oil returning hole of the manual proportional reversing valve. The oil inlet block is internally provided with a load feedback valve. An oil inlet of the load feedback valve is connected with an oil inlet pipeline of the operating valve. An oil outlet of the load feedback valve is connected with the main oil inlet of the proportional reversing valve. The feedback control hole of the load feedback valve is connected with the control oil hole of the manual proportional reversing valve. A working throttling hole B and a working throttling hole A are uniformly arranged on the external surfaces at two ends of a throttling column arranged at the middle part of the valve core of the manual proportional reversing valve respectively; and the amount of the working throttling holes B and the working throttling holes A are respectively at least four. The manual proportional operating valve has wide application range, is suitable for small-flux liquids and large-flux liquids, and can ensure that the loads of all execution mechanisms are balanced and do not affect one another.
Description
Technical field
The utility model relates to a kind of manual proportional control valve, relates in particular to the manual proportional control valve of a kind of big latus rectum.
Background technique
Article one, ship is made up of many anchor winches, two or three anchor winches of fitness for purpose are worked simultaneously with declared working condition, satisfying many machines operates at full capacity with regard to two of needs or three pump groups simultaneously as power source, also need other auxiliary valves to change simultaneously, so not only equipment investment is big, and system reliability is poor, therefore all adopts at present the power source of constant pressure pump group as this type systematic.In actual use, can provide power source for many machines by a constant pressure pump, also can provide power source for one or more machine by several constant pressure pumps, many machines of fitness for purpose can be worked simultaneously, and minimumly two functions will be arranged simultaneously with rated load work.But owing to each machine laod unbalance, working pressure difference, therefore when work, can influence each other, and when many pumps provide power for simultaneously a machine, also can cause this machine operating rate ultrafast.
Be in selector valve, to take different flows to solve the ultrafast problem of machine works speed at present with the manipulation spool of different flow areas.The Chinese patent notice of authorization number is CN2602229Y, the accurately big negotiability spool of control of a kind of small flow is disclosed but notice of authorization day is the utility model patent on February 4th, 2004, the triangular groove that has a plurality of uniform gradually open forms on the cylindrical outer surface of the related spool of this model utility is as restriction, can accurately control low flow rate liquid, and then the operating rate of control machine.But because this spool only has restriction on the outer surface of spool middle part throttling end one end, and restriction is that level is offered, so the flow of the restriction liquid of flowing through is lower, be only limited to low flow rate liquid, adjustable range is wideless, application area is narrow, and can not solve many machines because laod unbalance and interactional problem.
Summary of the invention
The purpose of this utility model be overcome the selector valve adjustment range that exists in the prior art little, only be applicable to that low flow rate liquid, application area are narrow, and can not solve many machines because laod unbalance and interactional defective and problem, provide a kind of big latus rectum manual proportional control valve, this valve not only adjustment range big, adapt to various flow liquid, applied range, and can guarantee the balance of many machine loads.
For realizing above purpose, technical solution of the present utility model is: the manual proportional control valve of a kind of big latus rectum, by manual proportional reversing valve, oil-feed piece and oil return piece are formed, described oil-feed piece is connected with the main filler opening of manual proportional reversing valve, described oil return piece is connected with the main return opening of manual proportional reversing valve, in the described oil-feed piece load feedback valve is installed, the filler opening of this load feedback valve is connected with the in-line of control valve, the oil outlet of load feedback valve is connected with the main filler opening of manual proportional reversing valve, and the feedback control mouth of load feedback valve is connected with the control port of manual proportional reversing valve;
Evenly have B work restriction and A work restriction in the described manual proportional reversing valve on the outer surface at the throttling post two ends at preventing control valve core middle part respectively, and the quantity of B work restriction and A work restriction all is at least four.
Described B work restriction and A work restriction tilt with respect to the axial horizontal line of preventing control valve core, and the angle of inclination of B work restriction and A work restriction is respectively α and β.
The scope at described α angle is 12 degree-20 degree, and the scope at β angle is 10 degree-18 degree, and the α angle is bigger than the angle at β angle, and the scope of differing is 1.0 degree-2.5 degree.
The width of the notch of described B work restriction, A work restriction is 4mm-14mm, and the processing of the width of described notch is the LINEAR CONTINUOUS variation.
Described notch is cubic groove.
Compared with prior art, the beneficial effects of the utility model are:
1. owing in the oil-feed piece load feedback valve is installed in the manual proportional control valve of a kind of big latus rectum of the utility model, therefore when many machines are worked simultaneously, when working pressure differs greatly, can guarantee the balance of each machine load by the load feedback valve, thereby not only can not interact when making each machine work, and all can satisfy operating mode separately
2. the throttling post two ends owing to preventing control valve core in the manual proportional control valve of a kind of big latus rectum of the utility model have equally distributed B work restriction and A work restriction, therefore can advance the discharge opeing body from the two ends of throttling post, the size of controlling liquid flow more easily, and owing to restriction tilts to offer, therefore when spool is done left and right sides to-and-fro motion, length difference along with spool middle part throttling post move distance, its throttling post two ends corresponding area that exposes of restriction is also variant, flow through flow size also difference naturally of restriction liquid, therefore this spool application area is wider, be not only applicable to low flow rate liquid, also be applicable to big flow liquid, the range of flow that is suitable for is generally 50～500L/min, and the flow of controlling liquid more accurately.
3. the width owing to restriction notch on the preventing control valve core in the manual proportional control valve of a kind of big latus rectum of the utility model presents linear change, thereby the changes in flow rate of the control valve liquid of flowing through also is linear change, thereby the speed of the actuator that control valve is served also is linear change, therefore can realize the ratio of actuator's speed is regulated.
Description of drawings
Fig. 1 is a structural drawing of the present utility model.
Fig. 2 is the structural drawing of load feedback valve among Fig. 1.
Fig. 3 is the manual structural drawing during the proportional reversing valve meta among Fig. 1.
Fig. 4 is the structural drawing when manually proportional reversing valve is just changeing among Fig. 1.
Fig. 5 is the structural drawing when manually proportional reversing valve reverses among Fig. 1.
Fig. 6 is the valve core structure figure of manual proportional reversing valve among Fig. 1.
Fig. 7 is the sectional view of manual proportional reversing valve spool C-C, D-D direction among Fig. 6.
Among the figure: manual proportional reversing valve 1, main filler opening 11, B actuator port 12, A actuator port 13, main return opening 14, oil-feed piece 2, oil return piece 3, load feedback valve 4, filler opening 41, oil outlet 42, feedback valve spool 43, feedback control mouth 44, preventing control valve core 5, throttling post 51, the B restriction 52 of working, the A restriction 53 of working, control port 54, notch 6.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is described in further detail
Referring to Fig. 1-Fig. 7, the manual proportional control valve of a kind of big latus rectum, by manual proportional reversing valve 1, oil-feed piece 2 and oil return piece 3 are formed, described oil-feed piece 2 is connected with the main filler opening 11 of manual proportional reversing valve 1, described oil return piece 3 is connected with the main return opening 14 of manual proportional reversing valve 1, in the described oil-feed piece 2 load feedback valve 4 is installed, the filler opening 41 of this load feedback valve 4 is connected with the in-line of control valve, the oil outlet 42 of load feedback valve 4 is connected with the main filler opening 11 of manual proportional reversing valve 1, and the feedback control mouth 44 of load feedback valve 4 is connected with the control port 54 of manual proportional reversing valve 1;
Evenly have B work restriction 52 and A work restriction 53 in the described manual proportional reversing valve 1 on the outer surface at the two ends of the throttling post 51 at preventing control valve core 5 middle parts respectively, and the quantity of B work restriction 52 and A work restriction 53 all is at least four.
Described B work restriction 52 and A work restriction 53 tilt with respect to the axial horizontal line of preventing control valve core 5, and the angle of inclination of B work restriction 52 and A work restriction 53 is respectively α and β.
The scope at described α angle is 12 degree-20 degree, and the scope at β angle is 10 degree-18 degree, and the α angle is bigger than the angle at β angle, and the scope of differing is 1.0 degree-2.5 degree.
The width of the notch 6 of described B work restriction 52, A work restriction 53 is 4mm-14mm, and the processing of the width of described notch 6 is the LINEAR CONTINUOUS variation.
Described notch 6 is cubic groove.
Referring to Fig. 3, when control valve was in meta, actuator's filler opening was closed, the system load infinity, and this moment, the constant pressure pump discharge capacity was reduced to minimum, and POF just equals pump self amount of leakage, and POF is zero.Main filler opening 11 sealings, main return opening 14 and B actuator port 12, A actuator port 13 are communicated with by the throttling breach, are y-function.
Referring to Fig. 4, when Joystick during to the operation of positive veer, actuator starts with low speed mode, and along with valve opening amount increases gradually, POF increases gradually, reaches stable operation speed up to actuator.To 13 oil-feeds of A actuator port, the oil in the B actuator port 12 is worked restriction 52 to main return opening 14 oil returns by B to high pressure oil in the main filler opening 11 by A work restriction 53.
Referring to Fig. 5, when the Joystick reverse directions was operated, actuator started with low speed mode, and along with the valve core opening amount increases gradually, POF increases gradually, reaches stable operation speed up to actuator.To 12 oil-feeds of B actuator port, the oil in the A actuator port 13 is worked restriction 53 to main return opening 14 oil returns by A to high pressure oil in the main filler opening 11 by B work restriction 52.
The conversion of three stations of spool in valve body can realize the direction conversion of fluid in manual proportional reversing valve, realizes that finally the ratio of just the changeing of actuator, counter-rotating and meta hold function and speed is regulated.
The effect of load feedback valve is the size variation according to load, automatically regulate its valve core opening, promptly the feedback valve valve core opening is just big when load is big, load hour feedback valve valve core opening is just little, the load feedback valve forms certain pressure reduction according to the load size on feedback valve, thereby proof load feedback valve inlet pressure is constant, so just can guarantee the different anchor winch of several loads proper functioning simultaneously, and be unlikely to take place owing to the working pressure difference produces the phenomenon of successively moving and interfering with each other.
Referring to Fig. 1 and Fig. 2, control valve is when meta, B actuator port 12, the A actuator port 13 of the spring chamber oil circuit of load feedback valve 4 and manual proportional reversing valve 1 communicate, at this moment, B actuator port 12, A actuator port 13 communicate with main return opening 14 again, the feedback valve spool 43 of load feedback valve 4 overcomes spring force under the effect of inlet pressure like this, and spool is closed.
When control valve when the forward or reverse direction is operated, the B actuator port 12 or A actuator port 13 chambeies of the spring chamber oil circuit of load feedback valve 4 and manual proportional reversing valve 1 communicate, when load is big, and the working pressure height, it is big that the valve core opening of load feedback valve 4 becomes, and this position pressure drop is just less relatively; When load hour, working pressure is low, and the valve core opening of load feedback valve 4 diminishes, and this position pressure drop is just relatively large; Like this inlet pressure just remain constant, thereby realize load balance.
Claims (5)
1. manual proportional control valve of big latus rectum, by manual proportional reversing valve (1), oil-feed piece (2) and oil return piece (3) are formed, described oil-feed piece (2) is connected with the main filler opening (11) of manual proportional reversing valve (1), described oil return piece (3) is connected with the main return opening (14) of manual proportional reversing valve (1), it is characterized in that: load feedback valve (4) is installed in the described oil-feed piece (2), the filler opening (41) of this load feedback valve (4) is connected with the in-line of control valve, the oil outlet (42) of load feedback valve (4) is connected with the main filler opening (11) of manual proportional reversing valve (1), and the feedback control mouth (44) of load feedback valve (4) is connected with the control port (54) of manual proportional reversing valve (1);
Evenly have B work restriction (52) and A work restriction (53) in the described manual proportional reversing valve (1) on the outer surface at throttling post (51) two ends at preventing control valve core (5) middle part respectively, and the quantity of B work restriction (52) and A work restriction (53) all is at least four.
2. the manual proportional control valve of a kind of big latus rectum according to claim 1, it is characterized in that: described B work restriction (52) and A work restriction (53) tilt with respect to the axial horizontal line of preventing control valve core (5), and the angle of inclination of B work restriction (52) and A work restriction (53) is respectively α and β.
3. the manual proportional control valve of a kind of big latus rectum according to claim 2 is characterized in that: the scope at described α angle is 12 degree-20 degree, and the scope at β angle is 10 degree-18 degree, and the α angle is bigger than the angle at β angle, and the scope of differing is 1.0 degree-2.5 degree.
4. the manual proportional control valve of a kind of big latus rectum according to claim 1, it is characterized in that: the width of the notch (6) of described B work restriction (52), A work restriction (53) is 4mm-14mm, and the processing of the width of described notch (6) is the LINEAR CONTINUOUS variation.
5. the manual proportional control valve of a kind of big latus rectum according to claim 4 is characterized in that: described notch (6) is cubic groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202282793U CN201496332U (en) | 2009-09-21 | 2009-09-21 | Manual proportional operating valve with large diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202282793U CN201496332U (en) | 2009-09-21 | 2009-09-21 | Manual proportional operating valve with large diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496332U true CN201496332U (en) | 2010-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202282793U Expired - Fee Related CN201496332U (en) | 2009-09-21 | 2009-09-21 | Manual proportional operating valve with large diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496332U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996541A (en) * | 2011-09-08 | 2013-03-27 | 上海立新液压有限公司 | Manual proportional directional flow control valve |
| CN104033441A (en) * | 2014-06-27 | 2014-09-10 | 四川建设机械（集团）股份有限公司 | Manual reversing valve |
| CN107288947A (en) * | 2017-08-07 | 2017-10-24 | 上海立新液压有限公司 | A kind of manual proportional reversing valve |
| CN113944778A (en) * | 2021-10-16 | 2022-01-18 | 涌镇液压机械（上海）有限公司 | Valve core structure of proportional valve |
-
2009
- 2009-09-21 CN CN2009202282793U patent/CN201496332U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996541A (en) * | 2011-09-08 | 2013-03-27 | 上海立新液压有限公司 | Manual proportional directional flow control valve |
| CN104033441A (en) * | 2014-06-27 | 2014-09-10 | 四川建设机械（集团）股份有限公司 | Manual reversing valve |
| CN104033441B (en) * | 2014-06-27 | 2016-03-09 | 四川建设机械（集团）股份有限公司 | Hand-operated direction valve |
| CN107288947A (en) * | 2017-08-07 | 2017-10-24 | 上海立新液压有限公司 | A kind of manual proportional reversing valve |
| CN107288947B (en) * | 2017-08-07 | 2023-11-03 | 上海立新液压有限公司 | Manual proportional reversing valve |
| CN113944778A (en) * | 2021-10-16 | 2022-01-18 | 涌镇液压机械（上海）有限公司 | Valve core structure of proportional 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: 20100602 Termination date: 20170921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |