CN202900827U - Balance valve - Google Patents
Balance valve Download PDFInfo
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- CN202900827U CN202900827U CN 201220616133 CN201220616133U CN202900827U CN 202900827 U CN202900827 U CN 202900827U CN 201220616133 CN201220616133 CN 201220616133 CN 201220616133 U CN201220616133 U CN 201220616133U CN 202900827 U CN202900827 U CN 202900827U
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- main valve
- control spool
- equilibrium
- spool
- valve
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- 239000012530 fluid Substances 0.000 claims description 78
- 230000033001 locomotion Effects 0.000 claims description 32
- 238000013016 damping Methods 0.000 claims description 14
- 239000003921 oil Substances 0.000 description 9
- 238000009434 installation Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The utility model discloses a balanced valve, wherein, this balanced valve includes: a main valve body (1), wherein a first oil port (A) and a second oil port (B) are formed on the main valve body (1); a main valve element (3), said main valve element (3) being accommodated in the main valve body (1); a control valve body (7), wherein the control valve body (7) is arranged on one side of the main valve body (1); a control valve core (8), wherein the control valve core (8) is accommodated in the control valve body (7) and can move along the axial direction (C-C) of the control valve core (8), so that the main valve core (3) can move along the axial direction (O-O) of the main valve core (3) to enable the first oil port (A) and the second oil port (B) to be communicated or closed; wherein the axial direction (O-O) of the main valve core (3) is perpendicular to the axial direction (C-C) of the control valve core (8). The control performance of the balance valve is good, the opening degree of the balance valve is controlled by the control valve core only, and the balance valve is basically not influenced by load change.
Description
Technical field
The utility model relates to Hydraulic Field, particularly, relates to a kind of equilibrium valve.
Background technique
In engineering machinery, usability for the lifting mechanism, jib lubbing mechanism and the extending means that improve hydraulic hoist, when the said mechanism bringing onto load descends, avoid accelerating decline and cause operation accident etc., therefore, for the fine motion that realizes descending and steadily, usually be provided with equilibrium valve in the hydraulic system of engineering machinery, particularly in the crane tool.
Be illustrated in figure 1 as the structural representation of the equilibrium valve of prior art, Figure 2 shows that the schematic diagram of the equilibrium valve of prior art, this equilibrium valve comprises main valve body 1, main valve plug 3, main spool spring 14, guide piston 17, guide's spring 18, the first hydraulic fluid port A, the second hydraulic fluid port B, pilot port X and drain tap L, described the first hydraulic fluid port A and described the second hydraulic fluid port B are formed on the described main valve body 1, described main valve plug 3 is slidably received within the described main valve body 1 by described main spool spring 14, to control the break-make between described the first hydraulic fluid port A and described the second hydraulic fluid port B, described guide piston 17 is slidably disposed on a side of described main valve body 1 by guide's spring 18.The effect of guide piston 17 by described pilot port X place hydraulic oil moves and promotes described main valve plug 3 motions.Wherein, three kinds of working staties because the crane tool usually has rising, keeps and descends, therefore, equilibrium valve correspondingly is in three kinds of different working staties under these three kinds of working staties, and the below describes successively to this.
When crane tool hoisting heavy rose, the first hydraulic fluid port A led to high pressure oil, if when the pressure that the first hydraulic fluid port A produces was low, the elastic force that namely can't overcome main spool spring 14 was done the time spent, equilibrium valve cuts out; If the first hydraulic fluid port A pressure increases to gradually the elastic force and the B mouth pressure that enough overcome main spool spring 14 and does the time spent, so that the first hydraulic fluid port A and the second hydraulic fluid port B are communicated with, fluid flows to the second hydraulic fluid port B from the first hydraulic fluid port A to main valve plug 3 toward moving left, to realize the lifting of weight.
When the crane tool remains on certain position with weight, the first hydraulic fluid port not oil-feed of A or guide's hydraulic fluid port X are very little without pressure or pressure, owing to be provided with the oil circuit that is communicated with the second hydraulic fluid port B and main spool spring chamber on the main valve plug 3, the pressure of the second hydraulic fluid port B can act on the left side of main valve plug 3, thereby the oil circuit that main valve plug 3 cuts off between the first hydraulic fluid port A and the second hydraulic fluid port B is so that equilibrium valve cuts out.Under reliably cone seal effect between main valve plug 3 and the main valve body 1, fluid can't flow to the second hydraulic fluid port B from the first hydraulic fluid port A, thereby weight is remained on certain position.
When crane tool hoisting heavy descended, the second hydraulic fluid port B led to high pressure oil, the logical control oil of pilot port X.When pilot port X pressure hour, when namely guide piston 17 can't overcome the elastic force motion of guide's spring 18, guide piston 17 was in the right-most position of first guide cavity 16; When pilot port X pressure increased gradually and can overcome the elastic force motion of guide's spring 18, guide piston 17 formerly guide cavity 16 was interior to left movement, and after guide piston 17 moved to certain position, guide piston 17 contacted with main valve plug 3.Along with the increase of pilot pressure, guide piston 17 and main valve plug 3 continue together to left movement, and to open equilibrium valve, fluid flows to the first hydraulic fluid port A from the second hydraulic fluid port B, thereby realize the decline function of weight.Simultaneously, the control oil in the first guide cavity 16 flows out by drain tap L.
Pilot pressure acts on the guide piston 17, promotes main valve plug 3 motions with control guide piston 17, and the guide is than being (being the ratio of guide's area and overflow area) K=D
2/ d
2, wherein, D is the diameter of pilot port, d is the valve pocket diameter of main valve.Owing to be subject to the restriction of existing balancing valve structure, d determines by the through-current capability of equilibrium valve, and D is subjected to the structural limitations size can not be excessive, cause the guide of equilibrium valve less than K, thereby equilibrium valve is subject to the impact of the fluctuation of load and produces shake, and cracking pressure is excessive, causes power loss larger.In addition, because the aperture of equilibrium valve is subject to the impact of load, equilibrium valve controlled relatively poor, pressure rise along with the second hydraulic fluid port B, even cause the pressure of pilot port X to keep constant, and that the aperture of the main valve plug 3 of equilibrium valve can't be kept is constant, therefore, the aperture of main valve plug 3 be can't help the pressure of pilot port X and is controlled, thereby is not easy to realize the fine motion operation of crane tool when underloading.And pilot pressure is higher, and in order to realize certain guide's ratio, guide piston 17 areas are larger, thereby causes the sensitivity of equilibrium valve low larger with energy consumption.
The model utility content
The purpose of this utility model provides a kind of equilibrium valve, this equilibrium valve controlled better, the aperture of equilibrium valve is only controlled by the control spool, basically is not subjected to the impact of load variations.
To achieve these goals, the utility model provides a kind of equilibrium valve, and wherein, this equilibrium valve comprises: main valve body is formed with the first hydraulic fluid port and the second hydraulic fluid port on this main valve body; Main valve plug, this main valve plug are contained in the described main valve body; Control valve body, this control valve body are arranged on a side of described main valve body; Control spool, this control spool are contained in the described control valve body and can be along the axial motions of described control spool, so that described main valve plug can be along the axial motion of described main valve plug, so that described the first hydraulic fluid port and the connection of described the second hydraulic fluid port or close; Wherein, the axial and described control spool of described main valve plug is axial vertical.
Preferably, also be formed with the valve pocket between described main valve plug and described control spool in the described main valve body, be formed with the passage and the drain tap that arrange along the axially spaced-apart of described control spool in the described control valve body, described passage is communicated with described valve pocket, be formed with on the described control spool along the axially extended throttling groove of control spool, described control spool is along the axial motion of described control spool, so that described passage is communicated with described drain tap by described throttling groove.
Preferably, the flow area of described throttling groove axially increasing gradually along described control spool.
Preferably, be formed with a plurality of throttling grooves on the described control spool, these a plurality of throttling grooves are along the circumferentially evenly interval setting of described control spool.
Preferably, also be formed with the first circular groove and the second circular groove that arrange along the axially spaced-apart of described control spool in the described control valve body, described the first circular groove and described channel connection, described the second circular groove is communicated with described drain tap, described control spool is along the axial motion of described control spool, so that described the first circular groove is communicated with described the second circular groove by described throttling groove.
Preferably, described equilibrium valve also comprises actuator, and this actuator is positioned at an end of described control spool, to drive described control spool along the axial motion of described control spool, so that described passage is communicated with described drain tap by described throttling groove.
Preferably, described actuator is electromagnet.
Preferably, described equilibrium valve also comprises control spring, and this control spring is contained in the described control valve body and flexibly is connected between the other end and described control valve body of described control spool, so that described control spool is remained on initial position.
Preferably, described control spring, described control spool and the coaxial setting of described electromagnet.
Preferably, be formed with recess on the described main valve plug, this recess is positioned at described the second oil port.
Preferably, be formed with the axially extended damping slot along described main valve plug on the described main valve plug, described the second hydraulic fluid port is communicated with described valve pocket by described damping slot.
Preferably, the flow area of described damping slot axially increasing gradually along described main valve plug.
Preferably, described equilibrium valve also comprises main valve housing, and this main valve housing is set in the described main valve body, and described main valve plug is contained in the described main valve housing.
Preferably, described equilibrium valve also comprises main spool spring, and this main spool spring is contained in the described valve pocket and flexibly is connected between described main valve plug and the described control valve body, so that described main valve plug is pressed against on the described main valve housing.
Preferably, described main valve body, described main valve housing, described main valve plug and the coaxial setting of described main spool spring.
Pass through technique scheme, equilibrium valve of the present utility model is controlled the motion of main valve plug by the motion of control spool, because the moving direction of control spool is vertical with the moving direction of main valve plug, the pressure of the second hydraulic fluid port that load variations causes changes, can not act on the control spool and the movement position of impact control spool, and then just can not affect the position of main valve plug yet, can guarantee the only control of controlled spool of aperture of equilibrium valve, so that equilibrium valve is controlled better, control more accurate.
Other feature and advantage of the present utility model will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and consists of the part of specification, is used from explanation the utility model with following embodiment one, but does not consist of restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the equilibrium valve of prior art;
Fig. 2 is the schematic diagram of the equilibrium valve of prior art;
Fig. 3 is the structural representation of equilibrium valve of the present utility model;
Fig. 4 is the schematic diagram of equilibrium valve of the present utility model; And
Fig. 5 is the enlarged view of the control spool of equilibrium valve of the present utility model.
Description of reference numerals
1 main valve body, 2 main valve housings
3 main valve plugs, 4 recesses
5 valve pockets, 6 damping slots
7 control valve bodies, 8 control spools
9 path 10 throttling grooves
11 first circular grooves, 12 second circular grooves
13 actuators, 14 main spool springs
15 control springs, 16 first guide cavities
17 guide pistons, 18 guide's springs
A the first hydraulic fluid port B the second hydraulic fluid port
X pilot port L drain tap
The axial C-C of O-O main valve plug controls the axial of spool
The valve pocket diameter of the diameter d main valve of D pilot port
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
In the utility model, do not doing in the situation of opposite explanation, the noun of locality that uses typically refers to as shown in Figure 3 higher position and lower position along the axial C-C of control spool such as " upper and lower ", " left and right " typically refer to as shown in Figure 3 along the axial O-O of main valve plug away from the position of control spool with near the position of control spool.
As shown in Figure 3 and Figure 4, embodiment of the present utility model provides a kind of equilibrium valve, and wherein, this equilibrium valve comprises: main valve body 1 is formed with the first hydraulic fluid port A and the second hydraulic fluid port B on this main valve body 1; Main valve plug 3, this main valve plug 3 are contained in the described main valve body 1; Control valve body 7, this control valve body 7 is arranged on a side of described main valve body 1; Control spool 8, this control spool 8 is contained in the described control valve body 7 and can moves along the axial C-C of described control spool 8, so that described main valve plug 3 can move along the axial O-O of described main valve plug 3, so that described the first hydraulic fluid port A and described the second hydraulic fluid port B are communicated with or close; Wherein, the axial O-O of described main valve plug 3 is vertical with the axial C-C of described control spool 8.
Equilibrium valve of the present utility model is controlled the motion of main valve plug 3 by the motion of control spool 8, because the moving direction of control spool 8 is vertical with the moving direction of main valve plug 3, the pressure of the second hydraulic fluid port B that load variations causes changes, can not act on the control spool 8 and the movement position of impact control spool 8, and then just can not affect the position of main valve plug 3 yet, can guarantee the only control of controlled spool 8 of aperture of equilibrium valve, so that equilibrium valve is controlled better, control more accurate.
Particularly, when causing that owing to load variations the pressure of the second hydraulic fluid port B changes, and main valve plug 3 is relatively vertically to install with control spool 8, thereby changing vertically to act on, the pressure of the second hydraulic fluid port B controls on the spool 8, the pressure that namely control spool 8 is produced radially, can not affect control spool 8 moving along the axial C-C that controls spool, namely do not exert pressure in this direction, the position of control spool 8 remains unchanged, the position of control spool 8 is corresponding one by one with the position of main valve plug 3, thereby the position of main valve plug 3 also remains unchanged, and then the aperture of equilibrium valve keeps stable, basically can not be subject to the impact of load variations, so that equilibrium valve is controlled better, only need the movement position of control control spool 8 to get final product.
As shown in Figure 3 and Figure 4, as a kind of concrete structure of the motion that realizes control spool 8 to the motion of main valve plug 3, preferably, also be formed with the valve pocket 5 between described main valve plug 3 and described control spool 8 in the described main valve body 1, be formed with the passage 9 and the drain tap L that arrange along the axial C-C interval of described control spool 8 in the described control valve body 7, described passage 9 is communicated with described valve pocket 5, be formed with the throttling groove 10 that extends along the axial C-C of control spool 8 on the described control spool 8, described control spool 8 moves along the axial C-C of described control spool 8, so that described passage 9 is communicated with described drain tap L by described throttling groove 10.
When control spool 8 moved along the axial C-C of control spools 8, throttling groove 10 moved to the position corresponding with passage 9, and then the fluid in the valve pocket 5 can flow out from drain tap L by passage 9 and throttling groove 10, thereby the pressure in the valve pocket 5 reduce gradually.Main valve plug 3 moves under the pressure-acting of the second hydraulic fluid port B, namely move right, thereby the second hydraulic fluid port B and the first hydraulic fluid port A is communicated with, and realize the decline of weight.
In order to guarantee that the motion of controlling spool 8 can guarantee that namely the aperture of equilibrium valve is stable so that main valve plug 3 stably maintains certain position, as shown in Figure 5, preferably, the flow area of described throttling groove 10 increases gradually along the axial C-C of described control spool 8.Particularly, throttling groove 10 comprises the first paragraph 101, second segment 102, the 3rd section 103 and the 4th sections 104 of continuous formation, and throttling groove 10 integral body are the shape of wedge shape.First paragraph 101 closely cooperates with control valve body 7, to seal.Second segment 102, the 3rd section 103 and the 4th sections 104 the degree of depth and area all increase gradually, thereby the flow area of throttling groove 10 increases gradually.
When control spool 8 did not move, first paragraph 101 cooperated the formation sealing with control valve body 7, and passage 9 and drain tap L are not communicated with; When control spool 8 moves, control spool 8 moves to different positions, second segment 102, be positioned at successively passage 9 places for the 3rd section 103 and the 4th sections 104, so that the flow area of throttling groove 10 constantly increases, the pressure of valve pocket 5 constantly reduces, so that the aperture of main valve plug 3 constantly increases, until main valve plug 3 stress balances, the position keep stable till.
In order to reduce the throttling action of throttling groove 10, preferably, be formed with a plurality of throttling grooves 10 on the described control spool 8, these a plurality of throttling grooves 10 are along the circumferentially evenly interval setting of described control spool 8.Because that controls spool 8 upwards evenly is arranged at intervals with a plurality of throttling grooves 10 in week, the fluid in the valve pocket 5 can be discharged by drain tap L by a plurality of throttling grooves 10, so that main valve plug 3 can reach state of equilibrium fast, and then keeps the aperture of equilibrium valve to stablize constant.In addition, a plurality of throttling grooves 10 evenly arrange, and can reduce to control spool 8 trembling under the mobilization of fluid.
As shown in Figure 3, in order to make things convenient for being communicated with of passage 9 and throttling groove 10 and being communicated with of throttling groove 10 and relief port L, preferably, also be formed with the first circular groove 11 and the second circular groove 12 that arrange along the axial C-C interval of described control spool 8 in the described control valve body 7, described the first circular groove 11 is communicated with described passage 9, described the second circular groove 12 is communicated with described drain tap L, described control spool 8 moves along the axial C-C of described control spool 8, so that described the first circular groove 11 is communicated with described the second circular groove 12 by described throttling groove 10.Fluid in the valve pocket 5 flow in the first circular groove 11 by passage 9, and then flow in the second circular groove 12 by throttling groove 10, discharged by drain tap L at last, the first circular groove 11 and the second circular groove 12 provide certain flowing and buffer space for fluid, so that flowing of fluid is more smooth, the Oil shocking when reducing by 8 motion of control spool.
For the better motion of control control spool 8, as shown in Figure 3, preferably, described equilibrium valve also comprises actuator 13, this actuator 13 is positioned at an end of described control spool 8, move along the axial C-C of described control spool 8 to drive described control spool 8, so that described passage 9 is communicated with described drain tap L by described throttling groove 10.Actuator 13 applies certain external force at an end of control spool 8 to control spool 8, force control spool 8 to move, and the movement position of control spool 8 is controlled by the driving force of actuator 13 only, can not be subject to other factors disturbs, with the position stability of assurance control spool 8, and then guarantee that the aperture of equilibrium valve is stable.
As shown in Figure 3, in order stably to remain on initial position so that control spool 8, preferably, described equilibrium valve also comprises control spring 15, this control spring 15 is contained in the described control valve body 7 and flexibly is connected between the other end and described control valve body 7 of described control spool 8, so that described control spool 8 is remained on initial position.15 pairs of control of control spring spool 8 applies certain precompression, and it is pressed against on the actuator 13, and to remain on initial position, namely passage 9 and the disconnected position of drain tap L prevent from controlling spool 8 owing to misoperation occurs in the extraneous factor impact.In addition, control spring 15 makes it be returned to initial position for control spool 8 provides certain reposition force.
As shown in Figure 3, for easy for installation, preferably, described control spring 15, described control spool 8 and the coaxial setting of described electromagnet.Control spring 15, control spool 8 and electromagnet are installed in the control valve body 7 successively along the axial C-C of control spool 8, so that equilibrium valve is simple in structure, easy for installation, and the convenient electromagnetic valve applies axial driving force to control spool 8, so that the motion of control spool 8 is smooth and easy.
As shown in Figure 3, for manufacturing and the assembling that makes things convenient for equilibrium valve, preferably, described equilibrium valve also comprises main valve housing 2, and this main valve housing 2 is set in the described main valve body 1, and described main valve plug 3 is contained in the described main valve housing 2.Main valve housing 2 is nested in main valve body 1 inside, and main valve plug 3 is contained in the main valve housing 2, and main valve plug 3 is pressed against on the main valve housing 2 under the original state, to cut off the connection between the first hydraulic fluid port A and the second hydraulic fluid port B; Main valve plug 3 moves with respect to main valve housing 2, so that the first hydraulic fluid port A and the second hydraulic fluid port B are communicated with.Be assemblied in after main valve housing 2 is made separately in the main valve body 1, then main valve plug 3 be assemblied in the main valve housing 2, simplified manufacturing and the processing of main valve body 1, and easy to assembly, and maintenance and replacing parts are easy.
For so that main valve plug 3 is pressed against the stable conical surface seal of formation on the main valve housing 2, to cut off the first hydraulic fluid port A and the second hydraulic fluid port B, as shown in Figure 3, preferably, described equilibrium valve also comprises main spool spring 14, this main spool spring 14 is contained in the described valve pocket 5 and flexibly is connected between described main valve plug 3 and the described control valve body 7, so that described main valve plug 3 is pressed against on the described main valve housing 2.14 pairs of main valve plugs 3 of main spool spring apply certain precompression, and it is pressed against on the main valve housing 2, to form reliable conical surface seal, prevent the oil liquid leakage between the first hydraulic fluid port A and the second hydraulic fluid port B.In addition, main spool spring 14 makes it be returned to initial position for main valve plug 3 provides certain reposition force.
For so that the pressure of the second hydraulic fluid port B can act on the main valve plug 3, to be communicated with the second hydraulic fluid port B and the first hydraulic fluid port A, preferably, be formed with recess 4 on the described main valve plug 3, this recess 4 is positioned at described the second hydraulic fluid port B place.When weight descends, during the second hydraulic fluid port B oil-feed, the pressure-acting of the second hydraulic fluid port B is on the ring surface of recess 4, thus the pressure P 1 that main valve plug 3 is produced to the right.And the pressure of valve pocket 5 also acts on the main valve plug 3, and 14 pairs of main valve plugs 3 of main spool spring apply certain precompression, thus the pressure P 2 that main valve plug 3 is produced left.As P1〉during P2, main valve plug 3 moves, and the second hydraulic fluid port B is communicated with the first hydraulic fluid port A, so that equilibrium valve keeps certain aperture.
Stressed for balance main valve plug 3 as shown in Figure 3, preferably, is formed with the damping slot 6 that extends along the axial O-O of described main valve plug 3 on the described main valve plug 3, described the second hydraulic fluid port B is communicated with described valve pocket 5 by described damping slot 6.When the motion of control spool 8 causes the pressure drop of valve pocket 5, the fluid of the second hydraulic fluid port B flows in the valve pocket 5 by damping slot 6, and to increase the pressure of valve pocket 5, throttling groove 10 and damping slot 6 cooperatively interact, so that main valve plug 3 reaches the state of balance, keep stable aperture.
Because throttling groove 10 and damping slot 6 cooperatively interact, so that main valve plug 3 keeps state of equilibrium, preferably, the flow area of described damping slot 7 increases gradually along the axial O-O of described main valve plug 3.Because the flow area of throttling groove 10 increases gradually along the axial C-C of control spool 8, then controlling the move upward flow area of rear throttling groove 10 of spool 8 increases, thereby the pressure decreased speed of valve pocket 5 speeds, main valve plug 3 moves right, this moment, the flow area of damping slot 7 also increased thereupon, thereby reduced the pressure loss of valve pocket 5, reached at last state of equilibrium, so that main valve plug 3 positions are constant, namely the aperture of equilibrium valve is stable.
As shown in Figure 3, for easy for installation, preferably, described main valve body 1, described main valve housing 2, described main valve plug 3 and the 14 coaxial settings of described main spool spring.Main valve plug 3 and main spool spring 14 are installed in the main valve housing 2 successively along the axial O-O of main valve plug 3, so that equilibrium valve is simple in structure, easy for installation, and make things convenient for 14 pairs of main valve plugs 3 of main spool spring to apply axial pressure, and main valve body 1 forms coaxial nested structure with main valve housing 2, easy to assembly, structural stability.
Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in the above-mentioned mode of execution; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove in addition, each concrete technical characteristics described in above-mentioned embodiment in reconcilable situation, can make up by any suitable mode, for fear of unnecessary repetition, the utility model is to the no longer separately explanation of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (15)
1. an equilibrium valve is characterized in that, this equilibrium valve comprises:
Main valve body (1) is formed with the first hydraulic fluid port (A) and the second hydraulic fluid port (B) on this main valve body (1);
Main valve plug (3), this main valve plug (3) are contained in the described main valve body (1);
Control valve body (7), this control valve body (7) is arranged on a side of described main valve body (1);
Control spool (8), this control spool (8) is contained in the described control valve body (7) and can moves along axial (C-C) of described control spool (8), so that described main valve plug (3) can be along axial (O-O) motion of described main valve plug (3), so that described the first hydraulic fluid port (A) and described the second hydraulic fluid port (B) are communicated with or close;
Wherein, axial (O-O) of described main valve plug (3) is vertical with axial (C-C) of described control spool (8).
2. equilibrium valve according to claim 1, it is characterized in that, also be formed with the valve pocket (5) that is positioned between described main valve plug (3) and the described control spool (8) in the described main valve body (1), be formed with the passage (9) and the drain tap (L) that arrange along axial (C-C) interval of described control spool (8) in the described control valve body (7), described passage (9) is communicated with described valve pocket (5), be formed with the throttling groove (10) that extends along axial (C-C) of control spool (8) on the described control spool (8), described control spool (8) is along axial (C-C) motion of described control spool (8), so that described passage (9) is communicated with described drain tap (L) by described throttling groove (10).
3. equilibrium valve according to claim 2 is characterized in that, the flow area of described throttling groove (10) increases gradually along axial (C-C) of described control spool (8).
4. equilibrium valve according to claim 3 is characterized in that, is formed with a plurality of throttling grooves (10) on the described control spool (8), and these a plurality of throttling grooves (10) are along the circumferentially evenly interval setting of described control spool (8).
5. equilibrium valve according to claim 2, it is characterized in that, also be formed with the first circular groove (11) and the second circular groove (12) that arrange along axial (C-C) interval of described control spool (8) in the described control valve body (7), described the first circular groove (11) is communicated with described passage (9), described the second circular groove (12) is communicated with described drain tap (L), described control spool (8) is along axial (C-C) motion of described control spool (8), so that described the first circular groove (11) is communicated with described the second circular groove (12) by described throttling groove (10).
6. equilibrium valve according to claim 2, it is characterized in that, described equilibrium valve also comprises actuator (13), this actuator (13) is positioned at an end of described control spool (8), to drive described control spool (8) along axial (C-C) motion of described control spool (8), so that described passage (9) is communicated with described drain tap (L) by described throttling groove (10).
7. equilibrium valve according to claim 6 is characterized in that, described actuator (13) is electromagnet.
8. equilibrium valve according to claim 7, it is characterized in that, described equilibrium valve also comprises control spring (15), this control spring (15) is contained in the described control valve body (7) and flexibly is connected between the other end and described control valve body (7) of described control spool (8), so that described control spool (8) is remained on initial position.
9. equilibrium valve according to claim 8 is characterized in that, described control spring (15), described control spool (8) and the coaxial setting of described electromagnet.
10. the described equilibrium valve of any one is characterized in that according to claim 1-9, is formed with recess (4) on the described main valve plug (3), and this recess (4) is positioned at described the second hydraulic fluid port (B) and locates.
11. equilibrium valve according to claim 10, it is characterized in that, be formed with the damping slot (6) that extends along axial (O-O) of described main valve plug (3) on the described main valve plug (3), described the second hydraulic fluid port (B) is communicated with described valve pocket (5) by described damping slot (6).
12. equilibrium valve according to claim 11 is characterized in that, the flow area of described damping slot (6) increases gradually along axial (O-O) of described main valve plug (3).
13. equilibrium valve according to claim 10 is characterized in that, described equilibrium valve also comprises main valve housing (2), and this main valve housing (2) is set in the described main valve body (1), and described main valve plug (3) is contained in the described main valve housing (2).
14. equilibrium valve according to claim 13, it is characterized in that, described equilibrium valve also comprises main spool spring (14), this main spool spring (14) is contained in the described valve pocket (5) and flexibly is connected between described main valve plug (3) and the described control valve body (7), so that described main valve plug (3) is pressed against on the described main valve housing (2).
15. equilibrium valve according to claim 14 is characterized in that, described main valve body (1), described main valve housing (2), described main valve plug (3) and the coaxial setting of described main spool spring (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220616133 CN202900827U (en) | 2012-11-20 | 2012-11-20 | Balance valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220616133 CN202900827U (en) | 2012-11-20 | 2012-11-20 | Balance valve |
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| CN202900827U true CN202900827U (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220616133 Expired - Lifetime CN202900827U (en) | 2012-11-20 | 2012-11-20 | Balance valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725844A (en) * | 2017-08-30 | 2018-02-23 | 武汉船用机械有限责任公司 | A kind of valve |
| CN109838423A (en) * | 2017-11-27 | 2019-06-04 | 江苏华澳橡胶机械有限公司 | Mechanical hand hydraulic circuit, the method and vulcanizer for eliminating manipulator balanced valve hidden danger |
-
2012
- 2012-11-20 CN CN 201220616133 patent/CN202900827U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725844A (en) * | 2017-08-30 | 2018-02-23 | 武汉船用机械有限责任公司 | A kind of valve |
| CN107725844B (en) * | 2017-08-30 | 2019-08-23 | 武汉船用机械有限责任公司 | A kind of valve |
| CN109838423A (en) * | 2017-11-27 | 2019-06-04 | 江苏华澳橡胶机械有限公司 | Mechanical hand hydraulic circuit, the method and vulcanizer for eliminating manipulator balanced valve hidden danger |
| CN109838423B (en) * | 2017-11-27 | 2024-04-30 | 华澳装备科技(盐城)有限公司 | Manipulator hydraulic loop, method for eliminating hidden danger of balance valve of manipulator and vulcanizing machine |
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Granted publication date: 20130424 |