CN109026886A - A kind of guide type valve - Google Patents
A kind of guide type valve Download PDFInfo
- Publication number
- CN109026886A CN109026886A CN201811192407.3A CN201811192407A CN109026886A CN 109026886 A CN109026886 A CN 109026886A CN 201811192407 A CN201811192407 A CN 201811192407A CN 109026886 A CN109026886 A CN 109026886A
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- Prior art keywords
- hole
- section
- valve
- valve pocket
- hole section
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- 239000012530 fluid Substances 0.000 claims description 45
- 238000007789 sealing Methods 0.000 claims description 8
- 230000004323 axial length Effects 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000013016 damping Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
Abstract
The present invention proposes a kind of guide type valve, comprising: valve body adjusts bar, bushing, valve pocket, connector, guide's valve pocket, pilot valve, the first spring, nonreturn valve core, second spring, screw plug, off-load spool, third spring.Guide type valve according to an embodiment of the present invention, volume compact, the processing is simple, and manufacturing cost is low.
Description
Technical field
The present invention relates to a kind of valves, relate in particular to a kind of guide type valve.
Background technique
Guide type valve is widely used in the hydraulic circuit with accumulator, for when the accumulator pressure for reaching setting
When power, the flow of pump is switched in the bypass of no pressure.The other application of guide type valve is exactly to be used for high/low press pump system
System, is switched to low-lift pump in the bypass of no pressure in this application when pressure reaches the high-voltage value of setting.It is existing
Guide type valve, such as: the DA type guide type valve of German Bosch's Rexroth hydraulic Co., Ltd production, it is mostly board-like
Valve arrangement, it is bulky, structure is complicated, at high cost, be not suitable in the small-sized walking machine equipment applied to Highgrade integration.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, an object of the present invention is to provide a kind of volume compact, the processing is simple, the low pilot-operated type of manufacturing cost
Shut-off valve.
A kind of guide type valve according to an embodiment of the present invention, comprising:
Valve body, the valve body have the valve hole that Open Side Down, and the valve hole includes that aperture is successively from top to bottom
Widened valve body undergauge hole section, valve body hole section and valve body expanding hole section have on the side wall of the valve body and are connected to the valve
First hydraulic fluid port of the periphery wall of body and the valve body hole section；
Adjust bar, the adjustment bar include the head that can slide up and down to Pei He in the valve body hole section and with
The valve is stretched out in the body of rod that the valve body undergauge hole section is threadedly engaged and is connected with the head, the upper end of the body of rod upwards
Body；
Bushing, the bushing include upper cooperation section in the lower end for fit in the valve body hole section, fit in it is described
The outer diameter of the main paragraph of the expanding hole section of valve body and the lower cooperation section below the main paragraph, the lower cooperation section is less than institute
The outer diameter of cooperation section is stated, there is bushing through-hole up and down on the bushing, the bushing through-hole includes hole from top to bottom
The liner body hole section and bushing undergauge hole section that diameter successively reduces；
Valve pocket, the upper end secure fit of the valve pocket have up and down on the valve pocket in the expanding hole section of valve body
Valve pocket through-hole, the valve pocket through-hole include the first valve pocket through hole section, the second valve pocket through hole section, third valve pocket through-hole from top to bottom
Section, the 4th valve pocket through hole section and the 5th valve pocket through hole section, the aperture of the first valve pocket through hole section are equal to the lower of the bushing and match
The outer diameter of section is closed, the aperture of the second valve pocket through hole section is less than the aperture of the first valve pocket through hole section, the third valve pocket
The aperture of through hole section is less than the aperture of the second valve pocket through hole section, and the aperture of the 4th valve pocket through hole section is between described second
Between the aperture of valve pocket through hole section and the aperture of the third valve pocket through hole section, the aperture of the 5th valve pocket through hole section is equal to institute
State the aperture of the second valve pocket through hole section, the lower cooperation section of the bushing fit in the upper end of the first valve pocket through hole section so that
The upper surface of the valve pocket against the main paragraph of the bushing lower end surface and make the bushing main paragraph upper surface against
The leave from office terrace of the valve body hole section has the periphery wall and described second for being connected to the valve pocket on the side wall of the valve pocket
Second hydraulic fluid port of valve pocket through hole section, the connection valve pocket periphery wall and the third hydraulic fluid port of the third valve pocket through hole section, be connected to
4th hydraulic fluid port of the periphery wall of the valve pocket and the 5th valve pocket through hole section has on the valve pocket and is connected to first valve pocket
The runner of through hole section and the 5th valve pocket through hole section；
Connector, the connector include described in the connector upper section fitted in the first valve pocket through hole section and adaptation
Connector lower section in second valve pocket through hole section, the lower end surface of the connector upper section is against the upper of the second valve pocket through hole section
Step surface, the lower end surface of the connector lower section are located at the upper surface of the inner opening of second hydraulic fluid port, have on the connector
The connector blind hole that Open Side Down, the connector blind hole include connector blind hole main paragraph and the contracting of connector blind hole from top to bottom
Diameter section has the first of the lower end of the lower end surface and the connector blind hole undergauge section that are connected to the connector on the connector
Damping hole；
Guide's valve pocket, guide's valve pocket include first segment, second segment, third section, the 4th section and the 5th section from bottom to top,
The first segment fits in the connector blind hole main paragraph, and the outer diameter of the second segment is greater than the connector blind hole main body
The aperture of section and the aperture for being less than the first valve pocket through hole section, the lower end surface of the second segment is against the upper end of the connector
Face, the third section fits in the first valve pocket through hole section and the upper surface of the third section is against the lower end of the bushing
Face, described 4th section fits in the bushing undergauge hole section and the 4th section of the axial length is equal to bushing undergauge hole
The axial length of section, described 5th section is located in the liner body hole section, and the 5th section of the outer diameter is not more than the described 4th
The outer diameter and the 5th section of the upper surface of section are concordant with the upper surface of the bushing, and the pilot valve, which is put on, to be had up and down
Guide's valve pocket through-hole, the aperture of guide's valve pocket through-hole is equal to the aperture of the connector blind hole undergauge section and the guide
Valve pocket through-hole and the connector blind hole undergauge section are coaxial, have on the second segment be connected to the periphery wall of guide's valve pocket with
First through flow hole of guide's valve pocket through-hole, described 5th section upper with the periphery wall for being connected to guide's valve pocket and the elder generation
Second through flow hole of guide valve bushing through-hole, the valve pocket, the connector define the first control between guide's valve pocket three
Chamber, the upper opening of the runner are connected to first control chamber；
Pilot valve, the pilot valve, which can slide up and down to, is located at guide's valve pocket through-hole and the connector blind hole
In undergauge section, when the lower end of the pilot valve is against the bottom surface of the connector blind hole undergauge section, the pilot valve
Upper surface is not less than the upper surface of guide's valve pocket, has the through-flow blind hole that Open Side Down in the pilot valve, along described
The radial direction of pilot valve penetrates through the pilot valve and up and down spaced apart first radial through-flow hole and the second radial through-flow hole,
First radial through-flow hole is with second radial through-flow hole between the upper and lower away from equal to first through flow hole and described second
Through flow hole between the upper and lower away from the lower end closed of the through-flow blind hole；
First spring, first spring are located in the valve body hole section, and the upper end of first spring is against institute
The lower end of head and first spring is stated against the upper end of the pilot valve, first spring is for often pushing downwards institute
Pilot valve is stated so that the lower end of the pilot valve is against the bottom surface of the connector blind hole undergauge section, at this point, described first
Radial through-flow hole is between first through flow hole and second through flow hole and second radial through-flow hole is positioned at described
Under first through flow hole；
Nonreturn valve core, the nonreturn valve core can slide up and down to cooperation in the second valve pocket through hole section and be located at described
Under connector, the nonreturn valve core includes nonreturn valve core main paragraph and nonreturn valve core undergauge section, the check valve from top to bottom
The outer diameter of core undergauge section is described between the aperture of the second valve pocket through hole section and the aperture of the third valve pocket through hole section
There is the list of the periphery wall of the upper surface and the nonreturn valve core undergauge section that are connected to the nonreturn valve core main paragraph on nonreturn valve core
To spool through flow hole；
Second spring, the second spring are located in the second valve pocket through hole section, the upper end of the second spring against
The lower end of the connector and lower end of the second spring is against the upper end of the nonreturn valve core, the second spring is normal downwards
Push the nonreturn valve core so that third valve pocket through hole section described in the lower end face closure of the nonreturn valve core undergauge section upper opening；
Screw plug, the screw plug are located on the valve pocket for closing the under shed of the 5th valve pocket through hole section；
Off-load spool, the off-load spool, which can slide up and down to, to be located in the 5th valve pocket through hole section and is located at the spiral shell
It the upper surface of blocks up, there is the of the lower end surface of the upper surface and the off-load spool that are connected to the off-load spool on the off-load spool
Two damping holes, define the second control chamber between the off-load spool and the screw plug, the under shed of the runner and described the
The connection of two control chambers；
Third spring, the third spring are located in the 5th valve pocket through hole section, the upper end of the third spring against
The lower end of the off-load spool and the third spring often pushes the unloading valve against the screw plug, the third spring upwards
Core so that the 4th valve pocket through hole section described in the upper end face closure of the off-load spool under shed.
Advantageously, the guide type valve further includes lower spring cup and upper spring seat, and the lower spring cup is located at institute
It states between the upper end of pilot valve and the lower end of first spring, the upper spring seat is located at lower end and the institute of the adjusting rod
Between the upper end for stating the first spring.
Advantageously, the guide type valve further includes sealing shroud, and the sealing is set on the valve body, the bar
The upper end of body is upward through the sealing shroud.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of guide type valve according to an embodiment of the invention；
Fig. 2 is the hydraulic schematic diagram of guide type valve according to an embodiment of the invention；
Fig. 3 is the hydraulic schematic diagram of an application scenarios of guide type valve according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings it is described in detail guide type valve according to an embodiment of the present invention.
As shown in Figure 1 to Figure 3, a kind of guide type valve according to an embodiment of the present invention, comprising: valve body 1 adjusts bar
10, bushing 3, valve pocket 2, connector 6, guide's valve pocket 7, pilot valve 8, the first spring 9a, nonreturn valve core 5, second spring 9b, spiral shell
Stifled 11, off-load spool 4, third spring 9c.
Specifically, valve body 1 has the valve hole that Open Side Down, valve hole successively expands including aperture from top to bottom
Valve body undergauge hole section, valve body hole section and the expanding hole section of valve body, there is on the side wall of valve body 1 periphery wall of connection valve body 1
With the first hydraulic fluid port T2 of the valve body hole section.
Adjustment bar 10 include can slide up and down to cooperate head in the valve body hole section and with the valve body
Valve body 1 is stretched out in the body of rod that undergauge hole section is threadedly engaged and is connected with the head, the upper end of the body of rod upwards.Advantageously, institute
The guide type valve stated further includes sealing shroud 100, and sealing shroud 100 is located on valve body 1, and the upper end of the body of rod is upward through close
Big envelope 100.Thus, it is possible to guarantee leakproofness.
Bushing 3 includes the upper cooperation section fitted in the lower end of the valve body hole section, to fit in the valve body expanding
The outer diameter of the main paragraph of hole section and the lower cooperation section below the main paragraph, the lower cooperation section is less than the upper cooperation
The outer diameter of section, has bushing through-hole up and down on bushing 3, the bushing through-hole include from top to bottom aperture successively reduce
Liner body hole section and bushing undergauge hole section.
The upper end secure fit of valve pocket 2 has valve pocket through-hole up and down, institute in the expanding hole section of valve body, on valve pocket 2
It is logical to state valve pocket through-hole from top to bottom and include the first valve pocket through hole section, the second valve pocket through hole section, third valve pocket through hole section, the 4th valve pocket
Hole section and the 5th valve pocket through hole section, the aperture of the first valve pocket through hole section are equal to the outer diameter of the lower cooperation section of bushing 3, and described the
The aperture of two valve pocket through hole sections is less than the aperture of the first valve pocket through hole section, and the aperture of the third valve pocket through hole section is less than institute
State the aperture of the second valve pocket through hole section, the aperture of the 4th valve pocket through hole section between the second valve pocket through hole section aperture with
Between the aperture of the third valve pocket through hole section, the aperture of the 5th valve pocket through hole section is equal to the second valve pocket through hole section
Aperture, the lower cooperation section of bushing 3 fits in the upper end of the first valve pocket through hole section so that the upper surface of valve pocket 2 is against bushing
The lower end surface of 3 main paragraph and make bushing 3 main paragraph leave from office terrace of the upper surface against the valve body hole section, valve pocket
Have the periphery wall of connection valve pocket 2 with the second hydraulic fluid port A of the second valve pocket through hole section on 2 side wall, be connected to the periphery of valve pocket 2
The 4th of wall and the third hydraulic fluid port P of the third valve pocket through hole section, the periphery wall for being connected to valve pocket 2 and the 5th valve pocket through hole section
Hydraulic fluid port T1 has the runner 21 for being connected to the first valve pocket through hole section and the 5th valve pocket through hole section on valve pocket 3.
Connector 6 includes that the connector upper section fitted in the first valve pocket through hole section and adaptation second valve pocket are logical
Connector lower section in hole section, appear on the stage terrace of the lower end surface of the connector upper section against the second valve pocket through hole section, institute
The lower end surface for stating connector lower section is located at the upper surface of the inner opening of the second hydraulic fluid port A, has the connector that Open Side Down on connector 6
Blind hole, the connector blind hole include connector blind hole main paragraph and connector blind hole undergauge section from top to bottom, are had on connector 6
There is the first damping hole 61 of the lower end surface of connection connector 6 and the lower end of the connector blind hole undergauge section.
Guide's valve pocket 7 includes first segment, second segment, third section, the 4th section and the 5th section from bottom to top, and the first segment is suitable
It fits in the connector blind hole main paragraph, the outer diameter of the second segment is greater than the aperture of the connector blind hole main paragraph and small
In the aperture of the first valve pocket through hole section, the lower end surface of the second segment is connected the upper surface of body 6, the third Duan Shi
It fits in the first valve pocket through hole section and the upper surface of the third section is against the lower end surface of bushing 3, the 4th section of adaptation
In the bushing undergauge hole section and the 4th section of the axial length is equal to the axial length of the bushing undergauge hole section, described
5th section is located in the liner body hole section, and the 5th section of the outer diameter is not more than the 4th section of the outer diameter and the described 5th
The upper surface of section is concordant with the upper surface of bushing 3, has guide's valve pocket through-hole up and down, the guide on guide's valve pocket 7
The aperture of valve pocket through-hole is equal to the aperture of the connector blind hole undergauge section and guide's valve pocket through-hole and the connector are blind
Hole undergauge section is coaxial, and there is the periphery wall of connection guide's valve pocket 7 and the first of guide's valve pocket through-hole to lead on the second segment
Discharge orifice 72, the second through flow hole 71 of the described 5th section upper periphery wall with connection guide's valve pocket 7 and guide's valve pocket through-hole,
Valve pocket 2, connector 6 define the first control chamber 2b, the upper opening of runner 21 and the first control chamber between 7 three of guide's valve pocket
2b connection.
Pilot valve 8, which can slide up and down to, to be located in guide's valve pocket through-hole and the connector blind hole undergauge section, when
When the lower end of pilot valve 8 is against the bottom surface of the connector blind hole undergauge section, the upper surface of pilot valve 8 is not less than pilot valve
7 upper surface is covered, there is the through-flow blind hole 81, the radial perforation pilot valve along pilot valve 8 that Open Side Down in pilot valve 8
8 and spaced apart first radial through-flow hole 83 and the second radial through-flow hole 82, the first radial through-flow hole 83 and the second diameter up and down
To through flow hole 82 between the upper and lower away from be equal to the first through flow hole 72 and the second through flow hole 71 between the upper and lower away from.The lower end of through-flow blind hole 81
Closing.
First spring 9a is located in the valve body hole section, and the upper end of the first spring 9a is against the head and the first bullet
The lower end of spring 9a is against the upper end of pilot valve 8, and the first spring 9a for often pushing pilot valve 8 so that pilot valve 8 downwards
Lower end against the bottom surface of the connector blind hole undergauge section, at this point, the first radial through-flow hole 83 between the first through flow hole 72 with
Between second through flow hole 71 and the second radial through-flow hole 82 is located under the first through flow hole 72.Advantageously, the pilot-operated type is cut
Only valve further includes lower spring cup 12 and upper spring seat 13, and lower spring cup 12 is located at the upper end of pilot valve 8 with the first spring 9a's
Between lower end, upper spring seat 13 is located between the lower end of adjusting rod 10 and the upper end of the first spring 9a.
Nonreturn valve core 5 can slide up and down to cooperation in the second valve pocket through hole section and be located under connector 6, unidirectionally
Spool 5 includes nonreturn valve core main paragraph and nonreturn valve core undergauge section from top to bottom, the outer diameter of the nonreturn valve core undergauge section between
There is connection institute between the aperture of the second valve pocket through hole section and the aperture of the third valve pocket through hole section, on nonreturn valve core 5
State the nonreturn valve core through flow hole 51 of the upper surface of nonreturn valve core main paragraph and the periphery wall of the nonreturn valve core undergauge section.
Second spring 9b is located in the second valve pocket through hole section, and the upper end of second spring 9b is connected the lower end of body 6
And the lower end of second spring 9b, against the upper end of nonreturn valve core 5, second spring 9b often pushes nonreturn valve core 5 so that the list downwards
The upper opening of third valve pocket through hole section described in lower end face closure to spool undergauge section.
Screw plug 11 is located on valve pocket 2 for closing the under shed of the 5th valve pocket through hole section.
Off-load spool 4, which can slide up and down to, the upper surface of to be located in the 5th valve pocket through hole section and is located at screw plug 11, off-load
There is the second damping hole 41 of the upper surface and the lower end surface for stating off-load spool 4 of connection off-load spool 4, off-load spool 4 on spool 4
The second control chamber 2a is defined between screw plug 11, the under shed of runner 21 is connected to the second control chamber 2a.
Third spring 9c is located in the 5th valve pocket through hole section, and the upper end of third spring 9c is against off-load spool 4 and
The lower end of three spring 9c often pushes off-load spool 4 so that the upper surface of off-load spool 4 is sealed upwards against screw plug 11, third spring 9c
Close the under shed of the 4th valve pocket through hole section.
Below with reference to the accompanying drawings a kind of working principle of guide type valve according to an embodiment of the present invention is sketched.
As shown in figure 3, third hydraulic fluid port P is connected with the outlet of hydraulic pump 14, the import phase of the second hydraulic fluid port A and accumulator 16
Even, the 4th hydraulic fluid port T1, the first hydraulic fluid port T2 and fuel tank 15 are connected directly.
It can change the preload of the first spring 9a by adjusting adjusting rod 10 (rotating clockwise or counterclockwise adjusting rod)
Power, to set the cracking pressure of pilot valve 8.
Work as electric motor starting, when hydraulic pump 14 being driven to rotate, the oil liquid that hydraulic pump 14 exports is applied to unidirectionally through third hydraulic fluid port P
On spool 5, overcomes the active force of second spring 9b that nonreturn valve core 5 is pushed to move upwards and open the upper of the third valve pocket through hole section
Opening enters the second hydraulic fluid port A through nonreturn valve core through flow hole 51, carries out fliud flushing, while the oil liquid warp of third hydraulic fluid port P to accumulator 16
Second damping hole 41 enters the second control chamber 2a, because pilot valve 8 is in close state, the oil liquid of the second control chamber 2a is without stream
Dynamic, the pressure of the second control chamber 2a and third hydraulic fluid port P are equal, and under the active force of third spring 9c, off-load spool 4, which is in, is closed
State, third hydraulic fluid port P and the 4th hydraulic fluid port T1 cut-off are obstructed.
When the pressure in accumulator 16 reach setting pressure when (namely the pressure of the second hydraulic fluid port A reach setting pressure when),
The pressure oil of second hydraulic fluid port A is applied in pilot valve 8 through the first damping hole 61, and pilot valve 8 is pushed to overcome the first spring 9a
Active force move upwards, so that the second radial through-flow hole 82 is connected with the first through flow hole 72, the first radial through-flow hole 83 and
Two through flow holes 71 are connected, and the oil liquid of such second control chamber 2a is successively through runner 21, the first through flow hole 72, the second radial through-flow
The first hydraulic fluid port T2 is flowed to after hole 82, through-flow blind hole 81, the first radial through-flow hole 83, the second through flow hole 71, due to the second damping hole
41 effect, making to produce pressure difference between third hydraulic fluid port P and the second control chamber 2a, (i.e. the pressure of third hydraulic fluid port P is greater than the second control
The pressure of chamber 2a processed), this pressure difference pushes off-load spool 4 that the active force of third spring 9c is overcome to move downward and opens the 4th valve
The under shed of through hole section is covered, so that third hydraulic fluid port P is connected to the 4th hydraulic fluid port T1, the oil liquid of third hydraulic fluid port P flows into the 4th hydraulic fluid port T1
Off-load is carried out, makes hydraulic pump 14 compared with being operated under low consumpting power, simultaneously as between the second hydraulic fluid port A and third hydraulic fluid port P
Pressure difference the pressure of third hydraulic fluid port P (i.e. the second hydraulic fluid port A pressure be greater than) is generated, in the oil pressure of second spring 9b and the second hydraulic fluid port A
Under effect, nonreturn valve core 5 moves downward the upper opening for closing the third valve pocket through hole section, and third hydraulic fluid port P and the second hydraulic fluid port A are cut
Break obstructed, accumulator 16 enters state of pressure keeping.
When pressure of the pressure of the second hydraulic fluid port A lower than the first spring 9a setting, pilot valve 8 moves downward partition second
The connection of control chamber 2a and the first hydraulic fluid port T2, are re-closing off off-load spool 4, and the oil liquid of third hydraulic fluid port P is flowed into through nonreturn valve core 5
Second hydraulic fluid port A carries out ftercompction.
The beneficial effect of guide type valve according to an embodiment of the present invention is, is designed by plug-in structure, will be single
It is integrated together to function, unloading function, volume compact, simple and reasonable, manufacturing cost is low.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more, unless separately
There is clearly specific restriction.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are within the scope of the invention to above-mentioned implementation
Example be changed, modify, replacement and variant, each fall within protection scope of the present invention.
Claims (3)
1. a kind of guide type valve characterized by comprising
Valve body, the valve body have the valve hole that Open Side Down, and the valve hole successively expands including aperture from top to bottom
Valve body undergauge hole section, valve body hole section and the expanding hole section of valve body, have on the side wall of the valve body and be connected to the valve body
First hydraulic fluid port of periphery wall and the valve body hole section；
Adjust bar, the adjustment bar include the head that can slide up and down to Pei He in the valve body hole section and with it is described
The valve body is stretched out in the body of rod that valve body undergauge hole section is threadedly engaged and is connected with the head, the upper end of the body of rod upwards；
Bushing, the bushing include upper cooperation section in the lower end for fit in the valve body hole section, fit in the valve body
The outer diameter of the main paragraph of expanding hole section and the lower cooperation section below the main paragraph, the lower cooperation section is less than on described
The outer diameter for cooperating section, has bushing through-hole up and down on the bushing, the bushing through-hole include from top to bottom aperture according to
The liner body hole section and bushing undergauge hole section of secondary diminution；
Valve pocket, the upper end secure fit of the valve pocket have valve pocket up and down in the expanding hole section of valve body, on the valve pocket
Through-hole, the valve pocket through-hole include the first valve pocket through hole section, the second valve pocket through hole section, third valve pocket through hole section, from top to bottom
Four valve pocket through hole sections and the 5th valve pocket through hole section, the aperture of the first valve pocket through hole section are equal to the lower cooperation section of the bushing
Outer diameter, the aperture of the second valve pocket through hole section are less than the aperture of the first valve pocket through hole section, the third valve pocket through hole section
Aperture be less than the aperture of the second valve pocket through hole section, the aperture of the 4th valve pocket through hole section is logical between second valve pocket
Between the aperture of hole section and the aperture of the third valve pocket through hole section, the aperture of the 5th valve pocket through hole section is equal to described second
The aperture of valve pocket through hole section, the lower cooperation section of the bushing fit in the upper end of the first valve pocket through hole section so that the valve
The upper surface of set against the main paragraph of the bushing lower end surface and make the bushing main paragraph upper surface against the valve
The leave from office terrace of phosphor bodies hole section has on the side wall of the valve pocket periphery wall for being connected to the valve pocket and second valve pocket logical
Second hydraulic fluid port of hole section, the connection valve pocket periphery wall and the third hydraulic fluid port of the third valve pocket through hole section, be connected to the valve
4th hydraulic fluid port of the periphery wall of set and the 5th valve pocket through hole section has on the valve pocket and is connected to the first valve pocket through hole section
With the runner of the 5th valve pocket through hole section；
Connector, the connector include the connector upper section fitted in the first valve pocket through hole section and adaptation described second
Connector lower section in valve pocket through hole section, the top bar of the lower end surface of the connector upper section against the second valve pocket through hole section
Face, the lower end surface of the connector lower section are located at the upper surface of the inner opening of second hydraulic fluid port, have opening on the connector
Downward connector blind hole, the connector blind hole include connector blind hole main paragraph and connector blind hole undergauge from top to bottom
Section, there is the first resistance of the lower end of the lower end surface and the connector blind hole undergauge section that are connected to the connector on the connector
Buddhist nun hole；
Guide's valve pocket, guide's valve pocket include first segment, second segment, third section, the 4th section and the 5th section from bottom to top, described
First segment fits in the connector blind hole main paragraph, and the outer diameter of the second segment is greater than the connector blind hole main paragraph
Aperture and the aperture for being less than the first valve pocket through hole section, the lower end surface of the second segment against the upper surface of the connector,
The third section fits in the first valve pocket through hole section and the upper surface of the third section is against the lower end surface of the bushing,
Described 4th section fits in the bushing undergauge hole section and the 4th section of the axial length is equal to the bushing undergauge hole section
Axial length, described 5th section is located in the liner body hole section, the 5th section of the outer diameter be not more than described 4th section
Outer diameter and the 5th section of the upper surface it is concordant with the upper surface of the bushing, the pilot valve is put on up and down
Guide's valve pocket through-hole, the aperture of guide's valve pocket through-hole are equal to the aperture of the connector blind hole undergauge section and the pilot valve
It covers through-hole and the connector blind hole undergauge section is coaxial, there is the periphery wall for being connected to guide's valve pocket and institute on the second segment
The first through flow hole of guide's valve pocket through-hole is stated, described 5th section upper with the periphery wall for being connected to guide's valve pocket and the guide
Second through flow hole of valve pocket through-hole, the valve pocket, the connector define the first control between guide's valve pocket three
Chamber, the upper opening of the runner are connected to first control chamber；
Pilot valve, the pilot valve, which can slide up and down to, is located at guide's valve pocket through-hole and the connector blind hole undergauge
In section, when the lower end of the pilot valve is against the bottom surface of the connector blind hole undergauge section, the upper end of the pilot valve
Face is not less than the upper surface of guide's valve pocket, has the through-flow blind hole that Open Side Down in the pilot valve, along the guide
The radial direction of spool penetrates through the pilot valve and up and down spaced apart first radial through-flow hole and the second radial through-flow hole, described
First radial through-flow hole is with second radial through-flow hole between the upper and lower away from through-flow equal to first through flow hole and described second
Hole between the upper and lower away from the lower end closed of the through-flow blind hole；
First spring, first spring are located in the valve body hole section, and the upper end of first spring is against the bar
The lower end of head and first spring is against the upper end of the pilot valve, and first spring is for often pushing downwards the elder generation
Guide valve core so that the lower end of the pilot valve against the bottom surface of the connector blind hole undergauge section, at this point, described first is radial
Through flow hole is between first through flow hole and second through flow hole and second radial through-flow hole is located at described first
Under through flow hole；
Nonreturn valve core, the nonreturn valve core can slide up and down to cooperation in the second valve pocket through hole section and be located at the connection
Under body, the nonreturn valve core includes nonreturn valve core main paragraph and nonreturn valve core undergauge section, the nonreturn valve core contracting from top to bottom
The outer diameter of diameter section is described unidirectional between the aperture of the second valve pocket through hole section and the aperture of the third valve pocket through hole section
There is the check valve of the periphery wall of the upper surface and the nonreturn valve core undergauge section that are connected to the nonreturn valve core main paragraph on spool
Core through flow hole；
Second spring, the second spring are located in the second valve pocket through hole section, and the upper end of the second spring is against described
The lower end of the connector and lower end of the second spring is against the upper end of the nonreturn valve core, the second spring often pushes downwards
The nonreturn valve core so that third valve pocket through hole section described in the lower end face closure of the nonreturn valve core undergauge section upper opening；
Screw plug, the screw plug are located on the valve pocket for closing the under shed of the 5th valve pocket through hole section；
Off-load spool, the off-load spool, which can slide up and down to, to be located in the 5th valve pocket through hole section and is located at the screw plug
Above, there is the second resistance of the lower end surface of the upper surface and the off-load spool that are connected to the off-load spool on the off-load spool
Buddhist nun hole defines the second control chamber, the under shed of the runner and second control between the off-load spool and the screw plug
Chamber connection processed；
Third spring, the third spring are located in the 5th valve pocket through hole section, and the upper end of the third spring is against described
The lower end of off-load spool and the third spring against the screw plug, the third spring often push upwards the off-load spool with
Make the under shed of the 4th valve pocket through hole section described in the upper end face closure of the off-load spool.
2. guide type valve according to claim 1, which is characterized in that further include lower spring cup and upper spring seat, institute
It states lower spring cup to be located between the upper end of the pilot valve and the lower end of first spring, the upper spring seat is located at described
Between the lower end of adjusting rod and the upper end of first spring.
3. guide type valve according to claim 1, which is characterized in that further include sealing shroud, the sealing is set in
On the valve body, the upper end of the body of rod is upward through the sealing shroud.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192407.3A CN109026886B (en) | 2018-10-13 | 2018-10-13 | A kind of guide type valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192407.3A CN109026886B (en) | 2018-10-13 | 2018-10-13 | A kind of guide type valve |
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| CN109026886A true CN109026886A (en) | 2018-12-18 |
| CN109026886B CN109026886B (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811192407.3A Active CN109026886B (en) | 2018-10-13 | 2018-10-13 | A kind of guide type valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660439A (en) * | 2020-06-16 | 2020-09-15 | 邵立坤 | Motor control device for concrete mixer truck |
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| DE102013222874A1 (en) * | 2013-11-11 | 2015-05-13 | Robert Bosch Gmbh | valve means |
| CN105697828A (en) * | 2016-03-11 | 2016-06-22 | 柳州柳工液压件有限公司 | Hydraulic control one-way valve |
| CN108180299A (en) * | 2017-12-28 | 2018-06-19 | 邵立坤 | A kind of one-way flow valves |
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2018
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|---|---|---|---|---|
| EP0100784A1 (en) * | 1982-08-13 | 1984-02-22 | Vickers Systems GmbH | Pressure-limiting valve with electrically adjustable setting |
| CN1690449A (en) * | 2004-04-27 | 2005-11-02 | 伊顿公司 | Hydraulic drive system and improved control valve assembly therefor |
| CN202040136U (en) * | 2011-03-31 | 2011-11-16 | 乐清市东风煤矿设备有限公司 | Pilot operated stop valve |
| CN202579400U (en) * | 2012-05-12 | 2012-12-05 | 宫禄齐 | Ultra-high pressure stop valve |
| DE102013222874A1 (en) * | 2013-11-11 | 2015-05-13 | Robert Bosch Gmbh | valve means |
| CN204041597U (en) * | 2014-08-19 | 2014-12-24 | 徐州徐工液压件有限公司 | A kind of temperature correction valve and there is the crane telescopic system of temperature compensation function |
| CN105697828A (en) * | 2016-03-11 | 2016-06-22 | 柳州柳工液压件有限公司 | Hydraulic control one-way valve |
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| CN111660439A (en) * | 2020-06-16 | 2020-09-15 | 邵立坤 | Motor control device for concrete mixer truck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109026886B (en) | 2019-11-08 |
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Effective date of registration: 20191012 Address after: Room 1802 and 2302, No. 9, Xingqing Road, Beilin District, Xi'an City, Shaanxi Province Applicant after: SHAANXI SPACE PUMP & VALVE SCIENCE AND TECHNOLOGY CO.,LTD. Address before: 518100 Guangdong Shenzhen Longgang District South Bay Street Jixia village Xiamen Village building B706 Applicant before: Shao Yugang |
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Denomination of invention: A pilot stop valve Effective date of registration: 20210608 Granted publication date: 20191108 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: SHAANXI SPACE PUMP & VALVE SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: Y2021610000136 |
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Date of cancellation: 20230628 Granted publication date: 20191108 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: SHAANXI SPACE PUMP & VALVE SCIENCE AND TECHNOLOGY CO.,LTD. Registration number: Y2021610000136 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A pilot operated globe valve Effective date of registration: 20230629 Granted publication date: 20191108 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: SHAANXI SPACE PUMP & VALVE SCIENCE AND TECHNOLOGY CO.,LTD. Registration number: Y2023610000501 |