CN209638134U - A kind of pilot-operated type open loop two-stage proportional reversing valve - Google Patents
A kind of pilot-operated type open loop two-stage proportional reversing valve Download PDFInfo
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- CN209638134U CN209638134U CN201920294539.0U CN201920294539U CN209638134U CN 209638134 U CN209638134 U CN 209638134U CN 201920294539 U CN201920294539 U CN 201920294539U CN 209638134 U CN209638134 U CN 209638134U
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Abstract
The utility model discloses a kind of pilot-operated type open loop two-stage proportional reversing valves, including main valve body, main valve plug, pilot valve body and appliance plug, commutation chamber is equipped in the middle part of the inner cavity of the main valve body, pass through the first oil communication between the first annular commutation groove and the 5th annular commutation groove, the internal slide of the commutation chamber is connected with main valve plug, the inner cavity of the pilot valve body is equipped with directed cavity, the electronic control spring is intracavitary to be equipped with electromagnet, the internal slide of the directed cavity is connected with pilot valve, and the upper end left part of the pilot valve body is equipped with appliance plug.When electromagnet is driven by electric current, pilot valve is set to turn right sliding motion, electromagnet power output moves proportional to the position of pilot valve, the size electromagnet power output of control pressure after commutation on the right side of main valve plug is proportional, until the control pressure on the right side of main valve plug is in equilibrium state with the spring on the left of main valve plug, so the displacement of main valve plug is proportional to driving current, proportion adjustment flow.
Description
Technical field
The utility model relates to directional control valve technical field, specific field is a kind of commutation of pilot-operated type open loop two-stage ratio
Valve.
Background technique
In hydraulic system, reversal valve is one of main element.We are often required to implement executive component rate conversion, just existing
For some hydraulic control devices, it is generally used and manually adjusts flow valve to solve, relatively complicated, the degree of automation is not
It is high.Also have using multiple reversal valves and flow valve combination and achieve the purpose that control speed, but such method, due to using
More valves, so that it is complicated for operation, it is easy to happen fault, causes accident, and the equipment volume is larger, at high cost, system is thrown
Enter also big.Currently, occurring pilot proportional reversing valve on domestic market, its effect is by proportional reversing valve and amplifier
It combines, driving proportion electro-magnet pushes spool, the i.e. direction of control liquid stream and size, provides accurate stream to hydraulic system
Amount.But outer leakage is easy to happen inside existing pilot proportional reversing valve, oil resistant liquid pollution capacity is weak, changes to influence ratio
It is moved left and right to the spool of valve, keeps the output flow unstable.For this purpose, it is proposed that a kind of pilot-operated type open loop two-stage ratio commutates
Valve.
Utility model content
The purpose of this utility model is to provide a kind of pilot-operated type open loop two-stage proportional reversing valves, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the utility model provides the following technical solutions: a kind of pilot-operated type open loop two-stage ratio commutation
Valve, including main valve body, main valve plug, pilot valve body and appliance plug, the inner cavity middle part of the main valve body is equipped with commutation chamber, described
It commutates and intracavitary is successively arranged first annular commutation groove, the second annular commutation groove, third annular commutation groove, the from left to right
Four annular commutation grooves and the 5th annular commutation groove, lead between the first annular commutation groove and the 5th annular commutation groove
The first oil communication is crossed, the bottom end of the main valve body is successively arranged the first functional port, pressure port and the second functional port from left to right,
The second annular commutation groove is connected to the first functional port, and the third annular groove that commutates is connected to pressure port, and described the
Four annular commutation grooves are connected to the second functional port, hydraulic control spring cavity are equipped at left and right sides of the commutation chamber, described in two
Hydraulic control spring cavity is arranged coaxially with commutation chamber, and the internal slide of the commutation chamber is connected with main valve plug, two hydraulic control bullets
The lateral ends of spring chamber are fixedly connected to one end of the first spring, the other end of two first springs respectively with main valve plug
Left and right ends be fixedly connected, the upper end of the main valve body is equipped with pilot valve body, and the inner cavity of the pilot valve body, which is equipped with, leads
First annular guiding groove, the second annular guiding groove, third annular is successively arranged from left to right to chamber, in the directed cavity to lead
It is oriented to groove, fourth annular guiding groove and the 5th annular guiding groove, the first annular guiding groove and the 5th annular
By the second oil communication between groove, the left side of the directed cavity is equipped with electronic control spring chamber, and the electronic control spring is intracavitary to be equipped with
Electromagnet, the internal slide of the directed cavity are connected with pilot valve, and the left end of the pilot valve is equipped with second spring, described
Electromagnet is run through in the left end of pilot valve, and the upper end left part of the pilot valve body is equipped with appliance plug, the appliance plug with
Electromagnet is electrically connected.
Preferably, the left side hydraulic control spring cavity and the second annular are oriented between groove and are equipped with the first oil duct, described in right side
The second oil duct is equipped between hydraulic control spring cavity and fourth annular guiding groove.
Preferably, the third annular commutation groove and third guiding are changed between guiding groove is connected by third oil duct.
Preferably, the lower end right part of the main valve body is equipped with oil return opening, and the 5th annular commutation groove and oil return opening connect
Logical, the 5th annular commutation groove is connect with the 5th annular guiding groove by the 4th oil duct.
Compared with prior art, the utility model has the beneficial effects that a kind of pilot-operated type open loop two-stage proportional reversing valve, leads to
It crosses appliance plug to be connected with external power supply, when electromagnet does not have driving current, main valve plug pressure at both sides is zero-pressure, main valve plug
In an intermediate position under the spring reset of two sides, when electromagnet is driven by electric current, electromagnetic force acts directly on pilot valve
Left end makes pilot valve turn right sliding motion, and electromagnet power output moves proportional to the position of pilot valve, pilot valve commutation
Afterwards, pilot pressure oil enters pilot valve right chamber, and the size electromagnet power output of the control pressure on the right side of main valve plug is proportional, main valve
Core is turned left commutation, until the control pressure on the right side of main valve plug is in equilibrium state with the spring on the left of main valve plug, so main valve plug
Displacement it is proportional to driving current, to realize the purpose of proportion adjustment flow.One of ratio electricity is only shown in figure
Magnet requires proportion electro-magnet at left and right sides of pilot valve when proportioning valve will realize commutation and adjust traffic engineering capability.Left or right
The direction of solenoid actuated change hydraulic oil；The flow of the size control hydraulic oil of driving current.To realize to its
The position for the device being connected or speed control.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the enlarged structure schematic diagram in the portion A in Fig. 1；
Fig. 3 is the enlarged structure schematic diagram in the portion B in Fig. 1.
In figure: 1- main valve body, 2- main valve plug, 3- pilot valve body, 4- appliance plug, 5- commutation chamber, 6- is first annular changes
It is changed to groove, 7- the second annular commutation groove, 8- third annular commutation groove, 9- fourth annular commutation groove, the 5th annular of 10-
To groove, the first oil circuit of 11-, the first functional port of 12-, 13- pressure port, the second functional port of 14-, 15- hydraulic control spring cavity, 16-
The first annular guiding groove of one spring, 17- directed cavity, 18-, the annular guiding of 19- second groove, 20- third annular guiding groove,
21- fourth annular be oriented to groove, the annular guiding of 22- the 5th groove, the second oil circuit of 23-, 24- electronic control spring chamber, 25- electromagnet,
26- pilot valve, 27- second spring, the first oil duct of 28-, the second oil duct of 29-, 30- third oil duct, 31- oil return opening, 32- the 4th
Oil duct.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of pilot-operated type open loop two-stage proportional reversing valve,
Including main valve body 1, main valve plug 2, pilot valve body 3 and appliance plug 4, commutation chamber 5, institute are equipped in the middle part of the inner cavity of the main valve body
State commutation it is intracavitary be successively arranged first annular commutation groove the 6, second annular commutation groove 7 from left to right, third annular commutate it is recessed
Slot 8, fourth annular commutation groove 9 and the 5th annular commutation groove 10, the first annular commutation groove and the 5th annular commutate
By the first oil communication 11 between groove, the bottom end of the main valve body is successively arranged the first functional port 12, pressure from left to right
Mouth 13 and the second functional port 14 can make hydraulic oil be transported to guiding by being equipped with for pressure port, commutation chamber and third oil duct
Intracavitary, the second annular commutation groove is connected to the first functional port, and the third annular commutation groove is connected to pressure port, institute
It states fourth annular commutation groove to be connected to the second functional port, is equipped with hydraulic control spring cavity 15 at left and right sides of the commutation chamber, two
A hydraulic control spring cavity is arranged coaxially with commutation chamber, and the internal slide of the commutation chamber is connected with main valve plug, described in two
The lateral ends of hydraulic control spring cavity are fixedly connected to one end of the first spring 16, the other end difference of two first springs
Be fixedly connected with the left and right ends of main valve plug, the upper end of the main valve body is equipped with pilot valve body, the pilot valve body it is interior
Chamber is equipped with directed cavity 17, and it is recessed to be successively arranged first annular the 18, second annular of guiding groove guiding in the directed cavity from left to right
Slot 19, third annular guiding groove 20, fourth annular guiding groove 21 and the 5th annular guiding groove 22, it is described first annular to lead
To, by the second oil communication 23, the left side of the directed cavity is equipped with electronic control spring chamber between groove and the 5th annular guiding groove
24, the electronic control spring is intracavitary to be equipped with electromagnet 25, and the internal slide of the directed cavity is connected with pilot valve 26, the guide
The left end of spool is equipped with second spring 27, and electromagnet is run through in the left end of the pilot valve, and the upper end of the pilot valve body is left
Portion is equipped with appliance plug, and when electromagnet does not have driving current, main valve plug pressure at both sides is zero-pressure, spring of the main valve plug in two sides
In an intermediate position under reset, when electromagnet is driven by electric current, electromagnetic force acts directly on pilot valve left end, makes pilot valve
Core is turned right sliding motion, and electromagnet power output moves proportional to the position of pilot valve, after pilot valve commutation, pilot pressure oil
Into pilot valve right chamber, the size electromagnet power output of the control pressure on the right side of main valve plug is proportional, and main valve plug is turned left commutation, directly
Control pressure on the right side of to main valve plug and the spring on the left of main valve plug be in equilibrium state, thus the displacement of main valve plug and with driving
Electric current is proportional, to realize the purpose of proportion adjustment flow.One of proportion electro-magnet is only shown, when proportioning valve is wanted in figure
When realizing commutation and adjusting traffic engineering capability, proportion electro-magnet is required at left and right sides of pilot valve.Left or right solenoid actuated changes
The direction of hydraulic oil；The flow of the size control hydraulic oil of driving current.To realize to coupled device
Position or speed control.
Specifically, being equipped with the first oil duct 28, right side between the left side hydraulic control spring cavity and the second annular guiding groove
The second oil duct 29 is equipped between the hydraulic control spring cavity and fourth annular guiding groove.
Specifically, the third annular commutation groove and third guiding are changed between guiding groove and are connected by third oil duct
30。
Specifically, the lower end right part of the main valve body is equipped with oil return opening 21, the 5th annular commutation groove and oil return
Mouth connection, the 5th annular commutation groove is oriented to groove with the 5th annular and is connect by the 4th oil duct 32, hydraulic when commutation
Oil is equipped with by the 4th oil duct and hydraulic fluid port, and hydraulic oil is discharged.
Working principle: when using the utility model, it is connected by appliance plug with external power supply, by pressure port, is changed
To being equipped with for chamber and third oil duct, hydraulic oil can be made to be transported in directed cavity, when electromagnet does not have driving current, main valve plug
Pressure at both sides is zero-pressure, and main valve plug is in an intermediate position under the spring reset of two sides, when electromagnet is driven by electric current, electricity
Magnetic force acts directly on pilot valve left end, and pilot valve is made to turn right sliding motion, and electromagnet power output moves proportional to guide
The position of spool, after pilot valve commutation, pilot pressure oil enters pilot valve right chamber, the size of the control pressure on the right side of main valve plug
Electromagnet power output is proportional, and main valve plug is turned left commutation, until the spring on the left of the control pressure and main valve plug on the right side of main valve plug
In equilibrium state, so the displacement of main valve plug is proportional to driving current, to realize the purpose of proportion adjustment flow.Figure
In one of proportion electro-magnet is only shown, when proportioning valve will realize commutation and adjust traffic engineering capability, at left and right sides of pilot valve
Require proportion electro-magnet.The direction of left or right solenoid actuated change hydraulic oil；The size control of driving current is hydraulic
The flow of oil.To realize position or the speed control to coupled device.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of pilot-operated type open loop two-stage proportional reversing valve, including main valve body (1), main valve plug (2), pilot valve body (3) and electricity
Device plug (4), it is characterised in that: commutation chamber (5) is equipped in the middle part of the inner cavity of the main valve body (1), the commutation chamber (5) is interior by a left side
First annular commutation groove (6), the second annular commutation groove (7), the commutation of third annular groove (8), the 4th are successively arranged to the right side
Annular commutation groove (9) and the 5th annular commutation groove (10), the first annular commutation groove (6) and the 5th annular commutation are recessed
By the first oil communication (11) between slot (10), the bottom end of the main valve body (1) is successively arranged the first functional port from left to right
(12), pressure port (13) and the second functional port (14), second annular commutation groove (7) are connected to the first functional port (12),
Third annular commutation groove (8) is connected to pressure port (13), fourth annular commutation groove (9) and the second functional port
(14) be connected to, be equipped with hydraulic control spring cavity (15) at left and right sides of the commutation chamber (5), two hydraulic control spring cavitys (15) and
Commutation chamber (5) is arranged coaxially, and the internal slide of commutation chamber (5) is connected with main valve plug (2), two hydraulic control spring cavitys
(15) lateral ends are fixedly connected to one end of the first spring (16), the other end difference of two first springs (16)
It is fixedly connected with the left and right ends of main valve plug (2), the upper end of the main valve body (1) is equipped with pilot valve body (3), the pilot valve
The inner cavity of valve body (3) is equipped with directed cavity (17), is successively arranged first annular guiding groove from left to right in the directed cavity (17)
(18), the second annular guiding groove (19), third annular guiding groove (20), fourth annular guiding groove (21) and the 5th annular
It is oriented to groove (22), passes through the second oil circuit between the first annular guiding groove (18) and the 5th annular guiding groove (22)
(23) it is connected to, the left side of the directed cavity (17) is equipped with electronic control spring chamber (24), and electromagnetism is equipped in the electronic control spring chamber (24)
The internal slide of iron (25), the directed cavity (17) is connected with pilot valve (26), and the left end of the pilot valve (26) is equipped with
Electromagnet (25) are run through in the left end of second spring (27), the pilot valve (26), the upper end left part of the pilot valve body (3)
Equipped with appliance plug (4), the appliance plug (4) and electromagnet (25) are electrically connected.
2. a kind of pilot-operated type open loop two-stage proportional reversing valve according to claim 1, it is characterised in that: the left side hydraulic control
Spring cavity (15) and second annular guiding groove (19) between be equipped with the first oil duct (28), the right side hydraulic control spring cavity (15) and
Fourth annular is oriented between groove (21) and is equipped with the second oil duct (29).
3. a kind of pilot-operated type open loop two-stage proportional reversing valve according to claim 1, it is characterised in that: the third annular
Commutation groove (8) and third guiding are changed between guiding groove to be connected by third oil duct (30).
4. a kind of pilot-operated type open loop two-stage proportional reversing valve according to claim 1, it is characterised in that: the main valve body
(1) lower end right part is equipped with oil return opening (31), and the 5th annular commutation groove (10) is connected to oil return opening (31), and the described 5th
Annular commutation groove (10) is connect with the 5th annular guiding groove (22) by the 4th oil duct (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920294539.0U CN209638134U (en) | 2019-03-08 | 2019-03-08 | A kind of pilot-operated type open loop two-stage proportional reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920294539.0U CN209638134U (en) | 2019-03-08 | 2019-03-08 | A kind of pilot-operated type open loop two-stage proportional reversing valve |
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| Publication Number | Publication Date |
|---|---|
| CN209638134U true CN209638134U (en) | 2019-11-15 |
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ID=68495673
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920294539.0U Active CN209638134U (en) | 2019-03-08 | 2019-03-08 | A kind of pilot-operated type open loop two-stage proportional reversing valve |
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| Country | Link |
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| CN (1) | CN209638134U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365313A (en) * | 2020-03-16 | 2020-07-03 | 杭州博力液控科技有限公司 | Hydraulic valve with valve core friction force compensation under centrifugal environment |
| CN112576781A (en) * | 2020-12-23 | 2021-03-30 | 涌镇液压机械（上海）有限公司 | Proportional valve with pressure reducing and reversing functions |
| CN113357214A (en) * | 2021-06-10 | 2021-09-07 | 涌镇液压机械（上海）有限公司 | Hydraulic proportional reversing valve |
-
2019
- 2019-03-08 CN CN201920294539.0U patent/CN209638134U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365313A (en) * | 2020-03-16 | 2020-07-03 | 杭州博力液控科技有限公司 | Hydraulic valve with valve core friction force compensation under centrifugal environment |
| CN111365313B (en) * | 2020-03-16 | 2024-04-16 | 杭州博力液控科技有限公司 | Valve core friction force compensation hydraulic valve under centrifugal environment |
| CN112576781A (en) * | 2020-12-23 | 2021-03-30 | 涌镇液压机械（上海）有限公司 | Proportional valve with pressure reducing and reversing functions |
| CN112576781B (en) * | 2020-12-23 | 2024-05-31 | 涌镇液压机械（上海）有限公司 | Proportional valve with decompression and reversing functions |
| CN113357214A (en) * | 2021-06-10 | 2021-09-07 | 涌镇液压机械（上海）有限公司 | Hydraulic proportional reversing valve |
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