CN109114060A - A kind of valve - Google Patents
A kind of valve Download PDFInfo
- Publication number
- CN109114060A CN109114060A CN201811134294.1A CN201811134294A CN109114060A CN 109114060 A CN109114060 A CN 109114060A CN 201811134294 A CN201811134294 A CN 201811134294A CN 109114060 A CN109114060 A CN 109114060A
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- section
- valve
- hole
- spool
- hole section
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- 239000012530 fluid Substances 0.000 claims description 40
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 6
- 240000002853 Nelumbo nucifera Species 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 3
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003754 machining Methods 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
- 238000007789 sealing Methods 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
- F15B13/024—Pressure relief valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
- Safety Valves (AREA)
Abstract
The present invention proposes a kind of valve, comprising: valve body, swivel nut, adjusting rod, off-load spool, unloading spring, overflow spool, overflow spring, the first spring base, nonreturn valve core, unidirectional spring.Valve according to an embodiment of the present invention, volume compact, the processing is simple, and manufacturing cost is low, can be used for the off-load of duplex hydraulic pump.
Description
Technical field
The present invention relates to a kind of valves.
Background technique
Duplex hydraulic pump is usually used in the special purpose machine tool for having the machining of fast feed and work feed requirement, at this moment double
Connection pump by a high-pressure low-flow hydraulic pump and a low pressure and mass flow hydraulic pressure pump group at.When fast feed, two hydraulic pumps are simultaneously
Fuel feeding (pressure is lower at this time), when work feed, by the hydraulic oil pump feed of high-pressure low-flow (pressure is higher at this time), while in oil
Make high-capacity pump off-load in the system of road, this can save the energy compared with using the pump of a high-pressure high-flow, reduce oil liquid hair
Heat.In the prior art, work feed is transformed by fast feed to control duplex hydraulic pump frequently with off-load valve group, makes low pressure
High-capacity pump carries out off-load, and existing off-load valve group is generally integrated into a valve block by independent check valve, overflow valve, unloading valve
On, it is bulky, with high costs.
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, manufacturing cost is low to be used
In the valve of duplex hydraulic pump off-load.
A kind of valve according to an embodiment of the present invention, comprising:
Valve body, the valve body have valve hole up and down, and the valve hole includes the first valve body from top to bottom
Through hole section, the second valve hole section, third valve hole section, the 4th valve hole section and the 5th valve hole section, described second
The aperture of valve hole section is greater than the aperture of the 4th valve hole section, the aperture of the first valve hole section, described the
The aperture of three valve hole sections and the aperture of the 5th valve hole section are all larger than the aperture of the second valve hole section,
The valve body has the first hydraulic fluid port, the first through flow hole and the second through flow hole, and the first hydraulic fluid port T is connected to the third valve hole
Section, first through flow hole are connected to the 4th valve hole section, and second through flow hole is connected to the 5th valve hole section
And the inner opening of second through flow hole is adjacent to the leave from office terrace of the 4th valve hole section, first through flow hole and described
Second through flow hole constitutes the second hydraulic fluid port；
The lower thread of swivel nut, the swivel nut cooperates in the first valve hole section and the upper end of the swivel nut is upward
The upper surface of the valve body is protruded from, the lower end surface of the swivel nut and the top bar face interval of the second valve hole section are predetermined
Distance, the swivel nut have a swivel nut through-hole up and down, the swivel nut through-hole include from top to bottom the first swivel nut through hole section and
Second swivel nut through hole section, the aperture of the first swivel nut through hole section are less than the aperture of the second swivel nut through hole section；
Adjusting rod, the adjusting rod is threadedly engaged in the first swivel nut through hole section and the upper end of the adjusting rod is upward
Protrude from the upper surface of the swivel nut；
Off-load spool, the off-load spool include can slide up and down to Pei He in the second valve hole section first
Off-load spool section can slide up and down to the second off-load spool section cooperated in the 4th valve hole section, and be located at institute
The off-load spool linkage section between the first off-load spool section and the second off-load spool section is stated, the off-load spool linkage section
Outer diameter is between the outer diameter of the first off-load spool section and the outer diameter of the second off-load spool section, first unloading valve
In core section with opening upwards off-load spool blind hole, the off-load spool blind hole include main paragraph and be located at the main body blind hole
Undergauge blind hole section below section has first runner, second flow channel and third flow channel, the first runner on the off-load spool
It is connected to the internal perisporium of the main body blind hole section and the periphery wall of the off-load spool linkage section, the second flow channel is connected to the contracting
The lower end surface of diameter blind hole section and the off-load spool, the third flow channel are formed in the second off-load spool section and described
The first end of three runners is often connected to first through flow hole and the second end of the third flow channel is connected adjacent to the off-load spool
The leave from office terrace of section；
Unloading spring, the upper end of the unloading spring is in the second swivel nut through hole section against the second swivel nut through-hole
Against the upper surface of the off-load spool, the unloading spring is often pushed away downwards for the lower end of appear on the stage terrace and the unloading spring of section
Move the off-load spool so that the leave from office terrace of the off-load spool linkage section often close the 4th valve hole section on open
Mouthful, at this point, the lower end of the second off-load spool section extends downwardly into the 5th valve hole section；
Overflow spool, the overflow spool include the overflow spool that can slide up and down to Pei He in the main body blind hole section
Main paragraph and the overflow spool undergauge section under the overflow spool main paragraph, the outer diameter of the overflow spool undergauge section
Greater than the aperture of the undergauge blind hole section；
Overflow spring, the overflow spring are located in the unloading spring, and the upper end of the overflow spring is against the tune
The lower end of the pole and lower end of the overflow spring is against the upper end of the overflow spool, the overflow spring often pushes downwards institute
Overflow spool is stated so that the upper opening of the undergauge blind hole section is often closed in the lower end surface of the overflow spool undergauge section；
First spring base, the first spring base fixation are located in the 5th valve hole section；
Nonreturn valve core, the nonreturn valve core include can slide up and down to cooperation it is unidirectional in the 5th valve hole section
Spool glissile segment and the list in first spring base can be cooperated below nonreturn valve core glissile segment and up or down
To spool undergauge section, the nonreturn valve core has nonreturn valve core through-hole up and down, and the aperture of the nonreturn valve core through-hole is small
In the aperture of the 4th valve hole, the under shed of the nonreturn valve core through-hole constitutes third hydraulic fluid port；
Unidirectional spring, the unidirectional spring are socketed in the nonreturn valve core undergauge section, and the upper end of the nonreturn valve core is supported
By the lower end surface of the nonreturn valve core glissile segment and the lower end of the unidirectional spring is against first spring base, when described second
When the lower end of off-load spool section is extended downwardly into the 5th valve hole section, the unidirectional spring often pushes described unidirectional upwards
Spool so that the upper surface of the nonreturn valve core against the lower end surface of the second off-load spool section, when the second off-load spool
When described in the upward retraction in lower end of section in the 5th valve hole section, the unidirectional spring often push the nonreturn valve core upwards so that
Leave from office terrace of the upper surface of the nonreturn valve core against the 4th valve hole section.
Advantageously, a kind of valve further includes retaining ring, and the retaining ring is located at the internal perisporium of the 5th valve hole section
So that first spring base is fixed in the 5th valve hole section between the periphery wall of first spring base.
Advantageously, a kind of valve further includes second spring seat, and the second spring seat is located under the adjusting rod
Between end and the upper end of the overflow spring.
Advantageously, the lower end of the off-load spool linkage section be configured to outer diameter successively increase from top to bottom it is round table-like.
Advantageously, the lower end of the second off-load spool section be configured to outer diameter successively increase from top to bottom it is round table-like.
Advantageously, the lower end of the overflow spool undergauge section be configured to outer diameter successively increase from top to bottom it is round table-like.
Advantageously, there is through-flow slot, the through-flow slot connection described first on the periphery wall of the second off-load spool section
The first end of through flow hole and the third flow channel.
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 a kind of structural schematic diagram of valve according to an embodiment of the invention；
Fig. 2 is a kind of hydraulic schematic diagram of valve according to an embodiment of the invention；
Fig. 3 is a kind of hydraulic schematic diagram of an application scenarios of 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 a kind of valve according to an embodiment of the present invention.
As shown in Figure 1 to Figure 3, a kind of valve according to an embodiment of the present invention, comprising: valve body 1, swivel nut 2, adjusting rod 10 unload
Lotus spool 4, unloading spring 11, overflow spool 3, overflow spring 12, the first spring base 6, nonreturn valve core 7, unidirectional spring 8.
Specifically, valve body 1 has valve hole up and down, the valve hole includes the first valve body from top to bottom
Through hole section, the second valve hole section, third valve hole section, the 4th valve hole section and the 5th valve hole section, described second
The aperture of valve hole section is greater than the aperture of the 4th valve hole section, the aperture of the first valve hole section, described the
The aperture of three valve hole sections and the aperture of the 5th valve hole section are all larger than the aperture of the second valve hole section.
Valve body 1 has the first hydraulic fluid port T, the first through flow hole 101 and the second through flow hole 102, and the first hydraulic fluid port T is connected to the third valve hole
Section, the first through flow hole 101 are connected to the 4th valve hole section, the second through flow hole 102 be connected to the 5th valve hole section and
Leave from office terrace of the inner opening of second through flow hole 102 adjacent to the 4th valve hole section.First through flow hole 101 and second is through-flow
Hole 102 constitutes the second hydraulic fluid port P.
The lower thread of swivel nut 2 cooperates in the first valve hole section and the upper end of swivel nut 2 is projected upwards in valve body 1
Upper surface, the top bar face interval preset distance of the lower end surface of swivel nut 2 and the second valve hole section, swivel nut 2 have it is upper
The swivel nut through-hole of lower perforation, the swivel nut through-hole include the first swivel nut through hole section and the second swivel nut through hole section from top to bottom, described
The aperture of first swivel nut through hole section is less than the aperture of the second swivel nut through hole section.
Adjusting rod 10 is threadedly engaged in the first swivel nut through hole section and the upper end of adjusting rod 10 is projected upwards in swivel nut 2
Upper surface.
Off-load spool 4 include can slide up and down to cooperate the first off-load spool section in the second valve hole section,
The the second off-load spool section cooperated in the 4th valve hole section can be slided up and down to, and be located at first unloading valve
Off-load spool linkage section between core section and the second off-load spool section, the outer diameter of the off-load spool linkage section is between described
Between the outer diameter of first off-load spool section and the outer diameter of the second off-load spool section.Have in the first off-load spool section and opens
The upward off-load spool blind hole of mouth, the off-load spool blind hole includes main paragraph and the undergauge below the main body blind hole section
Blind hole section.First runner 401, second flow channel 402 and third flow channel 403 on off-load spool 4.First runner 401 is connected to the master
The periphery wall of the internal perisporium of body blind hole section and the off-load spool linkage section, second flow channel 402 be connected to the undergauge blind hole section with
The lower end surface of off-load spool 4, third flow channel 403 is formed in the second off-load spool section and the first end of third flow channel 403
Often leave from office terrace of the second end of the first through flow hole 101 of connection and third flow channel 403 adjacent to the off-load spool linkage section.Favorably
Ground, has through-flow slot 404 on the periphery wall of the second off-load spool section, and through-flow slot 404 is connected to the first through flow hole 101 and third
The first end of runner 403.Advantageously, the lower end of the off-load spool linkage section is configured to the circle that outer diameter successively increases from top to bottom
Mesa-shaped；The lower end of the second off-load spool section be configured to outer diameter successively increase from top to bottom it is round table-like.
The upper end of unloading spring 11 in the second swivel nut through hole section against the second swivel nut through hole section appear on the stage terrace and
The lower end of unloading spring 11 is against the upper surface of off-load spool 4.Unloading spring 11 often pushes off-load spool 4 so that described unload downwards
The leave from office terrace of lotus spool linkage section often closes the upper opening of the 4th valve hole section.At this point, the second off-load spool
The lower end of section extends downwardly into the 5th valve hole section.
Overflow spool 3 includes the overflow spool main paragraph that can slide up and down to cooperate in the main body blind hole section and position
The outer diameter of overflow spool undergauge section under the overflow spool main paragraph, the overflow spool undergauge section is greater than the undergauge
The aperture of blind hole section.Advantageously, the lower end of the overflow spool undergauge section is configured to the rotary table that outer diameter successively increases from top to bottom
Shape.
Overflow spring 12 is located in unloading spring 11, lower end and overflow bullet of the upper end of overflow spring 12 against adjusting rod 10
The lower end of spring 12 often pushes overflow spool 3 downwards so that the overflow spool contracts against the upper end of overflow spool 3, overflow spring 12
Often close the upper opening of the undergauge blind hole section in the lower end surface of diameter section.Advantageously, a kind of valve further includes second spring seat
5, second spring seat 5 is located between the lower end of adjusting rod 10 and the upper end of overflow spring 12.
The fixation of first spring base 6 is located in the 5th valve hole section.Advantageously, a kind of valve further includes retaining ring
9, retaining ring 9 is located between the internal perisporium of the 5th valve hole section and the periphery wall of the first spring base 6 so that the first spring base 6
It is fixed in the 5th valve hole section.
Nonreturn valve core 7 include can slide up and down to cooperate nonreturn valve core glissile segment in the 5th valve hole section with
And the nonreturn valve core undergauge section in the first spring base 6 can be cooperated below nonreturn valve core glissile segment and up or down, it is single
There is nonreturn valve core through-hole up and down to spool 7, the aperture of the nonreturn valve core through-hole is less than the 4th valve hole
Aperture, the under shed of the nonreturn valve core through-hole constitutes third hydraulic fluid port A.
Unidirectional spring 8 is socketed in the nonreturn valve core undergauge section, and the upper end of nonreturn valve core 7 is sliding against the nonreturn valve core
The lower end surface of section and the lower end of unidirectional spring 8 are moved against the first spring base 6.When the lower end of the second off-load spool section is stretched downwards
When entering in the 5th valve hole section, unidirectional spring 8 often pushes nonreturn valve core 7 so that the upper surface of nonreturn valve core 7 is supported upwards
By the lower end surface of the second off-load spool section.The 5th valve body described in the upward retraction in lower end of the second off-load spool section is logical
When in hole section, unidirectional spring 8 often pushes nonreturn valve core 7 upwards so that the upper surface of nonreturn valve core 7 is logical against the 4th valve body
The leave from office terrace of hole section.
It following is a brief introduction of a kind of working principle of valve according to an embodiment of the present invention.
As shown in figure 3, in use, the outlet of the second hydraulic fluid port P and low pressure and mass flow pump 15 is connected, third hydraulic fluid port A with
The outlet of high-pressure low-flow hydraulic pump 14 is connected, and the first hydraulic fluid port T is connected directly with fuel tank 13.It can change by Adjusting bolt Adjusting screw 2
The pretightning force of unloading spring 11, to set pressure unloading；It can change the preload of overflow spring 12 by adjusting adjusting rod 10
Power, to set oil pressure relief.
Work as electric motor starting, when driving the rotation of duplex hydraulic pump, the oil liquid that low pressure and mass flow hydraulic pump 15 exports reaches second
Hydraulic fluid port P is applied to through the second through flow hole 102 and the active force of unidirectional spring 8 is overcome to push nonreturn valve core 7 downward on nonreturn valve core 7
Movement opens the upper opening of the nonreturn valve core through-hole (this is because the active force of unloading spring 11 is greater than unidirectional spring 8
Active force), into third hydraulic fluid port A, while the oil liquid of 14 outlet of high-pressure low-flow pump also enters third hydraulic fluid port A, realize quickly into
It gives, third hydraulic fluid port A pressure is lower at this time.When fast feed terminates, lathe, which touches workpiece and rises to third hydraulic fluid port A pressure, to be unloaded
When lotus pressure, the active force that the pressure oil of third hydraulic fluid port A pushes off-load spool 4 to overcome unloading spring 11 upwards opens the described 4th
The upper opening of valve hole section is connected to third flow channel 403 with the first hydraulic fluid port T-phase, and the oil liquid of the second hydraulic fluid port P is successively logical through first
Discharge orifice 101, through-flow slot 404, third flow channel 403 flow into the first hydraulic fluid port T and carry out off-load, simultaneously as the oil of third hydraulic fluid port A and second
Pressure difference (i.e. pressure of the pressure of third hydraulic fluid port A greater than the second hydraulic fluid port P) is generated between mouth P, in unidirectional spring 8 and third hydraulic fluid port A
Under the action of oil pressure, nonreturn valve core 7 is moved upwards so that the upper surface of nonreturn valve core 7 is under the 4th valve hole section
Step surface, to close the upper opening of the nonreturn valve core through-hole, the second hydraulic fluid port P and third hydraulic fluid port A truncation is obstructed.Duplex is hydraulic
Pump enters work feed operating condition, only 14 fuel feeding of high-pressure low-flow hydraulic pump to third hydraulic fluid port A, and the pressure of third hydraulic fluid port A can
To reach higher pressure, when third flow channel 403 is connected to the first hydraulic fluid port T-phase completely, the upper surface of nonreturn valve core 7 with it is described
The leave from office terrace of 4th valve hole section, which is in contact, realizes sealing partition third hydraulic fluid port A and the second hydraulic fluid port P, the pressure of third hydraulic fluid port A
Power makes off-load spool 4 be constantly in unlatching unloading condition, in work feed operating condition when the pressure of third hydraulic fluid port A is more than overflow spring
When the pressure of 12 settings, the oil liquid of third hydraulic fluid port A pushes overflow spool 3 to move upwards and opens the undergauge by second flow channel 402
The upper opening of blind hole section makes the oil liquid of third hydraulic fluid port A overflow through second flow channel 402, the undergauge blind hole section and first runner 401
The first hydraulic fluid port T is flowed to, safeguard protection is played the role of.
The beneficial effects of the present invention are designed by plug-in structure, by one-way function, unloading function, relief function
It is integrated together, 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 (7)
1. a kind of valve characterized by comprising
Valve body, the valve body have valve hole up and down, and the valve hole includes the first valve hole from top to bottom
Section, the second valve hole section, third valve hole section, the 4th valve hole section and the 5th valve hole section, second valve body
The aperture of through hole section is greater than the aperture of the 4th valve hole section, the aperture of the first valve hole section, the third valve
The aperture of body through hole section and the aperture of the 5th valve hole section are all larger than the aperture of the second valve hole section, described
Valve body has the first hydraulic fluid port, the first through flow hole and the second through flow hole, and first hydraulic fluid port is connected to the third valve hole section, institute
It states the first through flow hole and is connected to the 4th valve hole section, second through flow hole is connected to the 5th valve hole section and described
Leave from office terrace of the inner opening of second through flow hole adjacent to the 4th valve hole section, first through flow hole and described second logical
Discharge orifice constitutes the second hydraulic fluid port；
The lower thread of swivel nut, the swivel nut cooperates in the first valve hole section and the upper end of the swivel nut projects upwards
In the upper surface of the valve body, the pre- spacing of top bar face interval of the lower end surface of the swivel nut and the second valve hole section
There is swivel nut through-hole up and down from, the swivel nut, the swivel nut through-hole includes the first swivel nut through hole section and the from top to bottom
Two swivel nut through hole sections, the aperture of the first swivel nut through hole section are less than the aperture of the second swivel nut through hole section；
Adjusting rod, the adjusting rod is threadedly engaged in the first swivel nut through hole section and the upper end of the adjusting rod projects upwards
In the upper surface of the swivel nut；
Off-load spool, the off-load spool include the first off-load that can slide up and down to Pei He in the second valve hole section
Spool section can slide up and down to and cooperate the second off-load spool section in the 4th valve hole section, and be located at described the
Off-load spool linkage section between one off-load spool section and the second off-load spool section, the outer diameter of the off-load spool linkage section
Between the outer diameter of the first off-load spool section and the outer diameter of the second off-load spool section, the first off-load spool section
The upper off-load spool blind hole with opening upwards, the off-load spool blind hole include main paragraph and are located under the main body blind hole section
The undergauge blind hole section in face has first runner, second flow channel and third flow channel, the first runner connection on the off-load spool
The periphery wall of the internal perisporium of the main body blind hole section and the off-load spool linkage section, it is blind that the second flow channel is connected to the undergauge
The lower end surface of hole section and the off-load spool, the third flow channel is formed in the second off-load spool section and the third stream
The first end in road is often connected to the second end of first through flow hole and the third flow channel adjacent to the off-load spool linkage section
Leave from office terrace；
Unloading spring, the upper end of the unloading spring is in the second swivel nut through hole section against the second swivel nut through hole section
Appear on the stage terrace and the unloading spring lower end against the upper surface of the off-load spool, the unloading spring often pushes downwards institute
Off-load spool is stated so that the leave from office terrace of the off-load spool linkage section often closes the upper opening of the 4th valve hole section, this
When, the lower end of the second off-load spool section extends downwardly into the 5th valve hole section；
Overflow spool, the overflow spool include the overflow spool main body that can slide up and down to Pei He in the main body blind hole section
Section and the overflow spool undergauge section under the overflow spool main paragraph, the outer diameter of the overflow spool undergauge section are greater than
The aperture of the undergauge blind hole section；
Overflow spring, the overflow spring are located in the unloading spring, and the upper end of the overflow spring is against the adjusting rod
Lower end and the overflow spring lower end against the upper end of the overflow spool, the overflow spring often push downwards it is described overflow
Flow valve core is so that the upper opening of the undergauge blind hole section is often closed in the lower end surface of the overflow spool undergauge section；
First spring base, the first spring base fixation are located in the 5th valve hole section；
Nonreturn valve core, the nonreturn valve core include the nonreturn valve core that can slide up and down to Pei He in the 5th valve hole section
Glissile segment and the check valve in first spring base can be cooperated below nonreturn valve core glissile segment and up or down
Core undergauge section, the nonreturn valve core have nonreturn valve core through-hole up and down, and the aperture of the nonreturn valve core through-hole is less than institute
The aperture of the 4th valve hole is stated, the under shed of the nonreturn valve core through-hole constitutes third hydraulic fluid port；
Unidirectional spring, the unidirectional spring are socketed in the nonreturn valve core undergauge section, and the upper end of the nonreturn valve core is against institute
The lower end of the lower end surface of nonreturn valve core glissile segment and the unidirectional spring is stated against first spring base, when second off-load
When the lower end of spool section is extended downwardly into the 5th valve hole section, the unidirectional spring often pushes the nonreturn valve core upwards
So that the upper surface of the nonreturn valve core is against the lower end surface of the second off-load spool section, when the second off-load spool section
When in the 5th valve hole section described in the upward retraction in lower end, the unidirectional spring often pushes the nonreturn valve core upwards so that described
Leave from office terrace of the upper surface of nonreturn valve core against the 4th valve hole section.
2. a kind of valve according to claim 1, which is characterized in that further include retaining ring, the retaining ring is located at the 5th valve
So that first spring base is fixed on the described 5th between the internal perisporium of body through hole section and the periphery wall of first spring base
In valve hole section.
3. a kind of valve according to claim 1, which is characterized in that further include second spring seat, the second spring seat is set
Between the lower end of the adjusting rod and the upper end of the overflow spring.
4. a kind of valve according to claim 1, which is characterized in that the lower end of the off-load spool linkage section is configured to outer diameter
What is successively increased from top to bottom is round table-like.
5. a kind of valve according to claim 1, which is characterized in that the lower end of the second off-load spool section is configured to outer diameter
What is successively increased from top to bottom is round table-like.
6. a kind of valve according to claim 1, which is characterized in that the lower end of the overflow spool undergauge section is configured to outer diameter
What is successively increased from top to bottom is round table-like.
7. a kind of valve according to claim 1, which is characterized in that have on the periphery wall of the second off-load spool section logical
Chute, the through-flow slot are connected to the first end of first through flow hole and the third flow channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134294.1A CN109114060B (en) | 2018-09-27 | 2018-09-27 | A valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134294.1A CN109114060B (en) | 2018-09-27 | 2018-09-27 | A valve |
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| Publication Number | Publication Date |
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| CN109114060A true CN109114060A (en) | 2019-01-01 |
| CN109114060B CN109114060B (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811134294.1A Active CN109114060B (en) | 2018-09-27 | 2018-09-27 | A valve |
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| Country | Link |
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| CN (1) | CN109114060B (en) |
Cited By (2)
| 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 |
| CN114484014A (en) * | 2022-01-24 | 2022-05-13 | 浙江大学 | Liquid pump pressure control valve |
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| GB9914264D0 (en) * | 1998-06-30 | 1999-08-18 | Eaton Corp | Cartridge valve having solenoid bypass and integral relief valve |
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| CN114484014A (en) * | 2022-01-24 | 2022-05-13 | 浙江大学 | Liquid pump pressure control valve |
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| Publication number | Publication date |
|---|---|
| CN109114060B (en) | 2020-03-31 |
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