CN109538567A - A kind of insert type change-over valve core - Google Patents
A kind of insert type change-over valve core Download PDFInfo
- Publication number
- CN109538567A CN109538567A CN201910009541.3A CN201910009541A CN109538567A CN 109538567 A CN109538567 A CN 109538567A CN 201910009541 A CN201910009541 A CN 201910009541A CN 109538567 A CN109538567 A CN 109538567A
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- valve
- insert body
- insert
- type change
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000012224 working solution Substances 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sliding Valves (AREA)
Abstract
The invention provides a kind of insert type change-over valve core, including screwed part and is inserted into the valve hole part that can be relatively rotated in screwed part locating slot and with screwed part；The valve hole part includes insert body, the sliding sleeve in insert body and the valve rod for being inserted into insert body；The valve stem end is inserted into sliding sleeve；The insert body inner wall is equipped with the gasket that sealing is formed with sliding sleeve, and is close to gasket in insert body inner wall and is equipped with constriction, and sliding sleeve can be passed freely through in constriction inner cavity.The reversing valve core that the invention provides is fabricated construction, and screwed part is linked into an integrated entity by elastic spring and valve hole part, can be relatively rotated between the two.In assembling and dissembling process, valve hole part is inserted into or is taken out of with back-out by the screw-in of screwed part, valve hole part itself is without rotation.Effectively reduce processing and assembly precision, it is entirely avoided spool and valve body scuffing in disassembly process.
Description
Technical field
The invention belongs to hydraulic support reversing valve core technical field, more particularly, to a kind of insert type change-over valve core.
Background technique
Commutation valve group is to realize the controling adjustment device of hydraulic support movement, and commutation valve group used at present is all by main valve
Body and several inserting spools composition.But there are several in installation, disassembly and use process for the reversing valve core used now
Problem.Mainly have: the valve body and spool material of the prior art are all stainless steel, and there are inside and outside spiral shells during installation or removal
Line or the risk of inner and outer surfaces occlusion, will cause scrapping for valve body or spool after occlusion.In addition, when spool work, if by
Hydraulic shock, existing structure can make back liquid sealing open, and return liquid after opening and seal and can not be re-closing off, and working solution directly flows
Enter liquid back pipe road, not can guarantee required pressure or flow, mining operations is made to have security risk, urgent need to resolve.
Summary of the invention
In view of this, the invention is intended to overcome above-mentioned defect existing in the prior art, propose that a kind of plug-in changes
To spool.
In order to achieve the above objectives, the technical solution of the invention is achieved in that
A kind of insert type change-over valve core, including screwed part and be inserted into screwed part locating slot and can be with screw thread
The valve hole part that component relatively rotates；The valve hole part includes insert body, the sliding sleeve in insert body and insertion spool
The valve rod of ontology；The valve stem end is inserted into sliding sleeve；The insert body inner wall is equipped with the sealing that sealing is formed with sliding sleeve
Pad, and be close to gasket in insert body inner wall and be equipped with constriction, sliding sleeve can be passed freely through in constriction inner cavity.
Further, the screwed part is connect with valve hole part by elastic spring.
Further, the sliding sleeve is equipped with inclined-plane auxiliary section towards the side of gasket, matched on gasket to be equipped with tiltedly
Face seal portion.
Further, integrally structure annular in shape, periphery are fixed on insert body inner wall to the constriction.
Further, the valve hole part end is equipped with cooperation section, is slidably matched between the cooperation section and locating slot inner wall.
Further, the insert body, sliding sleeve, valve rod three coaxial arrangement.
Further, first seal is equipped between the valve rod and sliding sleeve.
Further, second seal is equipped between the sliding sleeve and insert body inner wall.
Compared with the existing technology, the invention has the advantage that
The reversing valve core that the invention provides is fabricated construction, and screwed part is connected by elastic spring and valve hole part
It is connected into one, can be relatively rotated between the two.In assembling and dissembling process, valve hole part is inserted into back-out by the screw-in of screwed part
Or take out of, valve hole part itself is without rotation.Effectively reduce processing and assembly precision, it is entirely avoided in disassembly process spool with
Valve body scuffing.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide to further understand the invention, present invention wound
The illustrative embodiments and their description made are used to explain the present invention creation, do not constitute the improper restriction to the invention.?
In attached drawing:
Fig. 1 is the structural schematic diagram of the invention screwed part and valve hole part junction section view；
Fig. 2 is the structural schematic diagram of the invention valve hole part partial cross；
Fig. 3 is the structural schematic diagram at locating part.
Description of symbols:
1- screwed part；2- valve hole part；3- insert body；4- sliding sleeve；5- valve rod；6- gasket；7- constriction；8- gear
Circle；The inclined-plane 9- auxiliary section；The inclined-plane 10- sealing；11- fixed part；12- throttle；13- cooperates section；14- first seal；15-
Second seal.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the invention can
To be combined with each other.
In the description of the invention, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.In the description of the invention, unless separately
It is described, the meaning of " plurality " is two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
Below with reference to embodiment come the present invention will be described in detail create.
A kind of insert type change-over valve core, as shown in Figure 1 to Figure 3, including screwed part 1 and to be inserted into screwed part fixed
And it can be with the valve hole part 2 of screwed part relative rotation in the slot of position；The valve hole part includes insert body 3, in insert body
Sliding sleeve 4 and be inserted into insert body valve rod 5；The valve stem end is inserted into sliding sleeve；The insert body inner wall is equipped with
The gasket 6 of sealing is formed with sliding sleeve, and is close to gasket in insert body inner wall and is equipped with constriction 7, and sliding sleeve can be in constriction
Inner cavity passes freely through.
The invention is integral plugged formula structure for reversing valve core in the prior art, spool parts after the assembly is completed at
For an entirety.If the spool entirety concentricity after assembly is bad, the intrinsic viscous glutinous characteristic of stainless steel, spool were being dismounted in addition
It just will appear the drawbacks such as scuffing in journey, targetedly improved.Using valve hole part knot seperated with screwed part
Structure, after the assembly is completed, screwed part is whole with valve hole part and can relatively rotate the two, and such improvement can be in economy
Under the conditions of avoid the generation of scuffing completely.Rather than use it is conventional from increase part processing and assembly precision, change material,
The directions such as special process processing are set out, and scuffing is solved, and caused cost can improve.
Valve hole part and screwed part assembled design, and can effectively reduce the difficulty of processing of reversing valve core, or even only need
Valve hole part is finished, processing cost is reduced, meanwhile, required precision also can be reduced accordingly when assembly.
Preferably, the screwed part is connect with valve hole part by elastic spring 8.It is provided in locating slot inner wall recessed
There are card slot corresponding with groove in slot, valve hole part end, and steel wire gear is placed in card slot, is engaged with the groove of locating slot, in this way
Structure design, that is, realizing both valve hole part and screwed part can relatively rotate, meanwhile, in elastic spring (and spool
Matching relationship between component ends and locating slot) under the action of, valve hole part and screwed part there will be no other freedom degrees.
Preferably, the sliding sleeve is equipped with inclined-plane auxiliary section 9 towards the side of gasket, matched on gasket to be equipped with tiltedly
Face seal portion 10, sliding sleeve and gasket can be combined reliably, realize sealing.
Preferably, integrally structure annular in shape, periphery are fixed on insert body inner wall to the constriction.In general, described
Constriction is arranged in side of the gasket close to screwed part.In an alternative embodiment, constriction cross section is L-shaped,
Throttle 12 including vertical fixed part 11 and its lower end level, fixed part are pressed simultaneously with gasket in the recessed of insert body
In slot, throttle portion extends to screwed part side.Gap very little between constriction inner wall and sliding sleeve, usually in 0.1-
0.5mm or so.
Designed by the structure of constriction, can be effectively prevented into, return liquid phase it is logical caused by pressure or underfed phenomenon,
Improve safety when product uses.It should be pointed out that constriction is not limited to cyclic structure, other knots can also be used
Configuration formula, as long as realizing corresponding throttling action, other structures alternative form is usually regarded as equivalent replacement,
It should belong to the invention protection scope.
Preferably, the valve hole part end is equipped with cooperation section 13, is slidably matched between the cooperation section and locating slot inner wall, protects
Both cards concentricity meets performance requirement.Preferably, the insert body, sliding sleeve, valve rod three coaxial arrangement.
In general, being equipped with first seal 14 between the valve rod and sliding sleeve.It is set between the sliding sleeve and insert body inner wall
There is second seal 15.
It should be noted that the reversing valve core of the prior art, when off working state, valve rod contacts isolation high pressure with gasket
Feed liquor, sliding sleeve are separated with gasket, are returned liquid and are communicated with working chamber；When working condition, sliding sleeve will return after contacting sealing with gasket
Liquid is separated with working chamber, and valve rod is separated with gasket, and feed liquor is communicated with working chamber at this time.If by hydraulic shock, due to liquid
The effect of impact is pressed, sliding sleeve is separated with gasket, and feed liquor is directly connected with liquid is returned after separation, and the control pressure of sliding sleeve is small to be not enough to
It is again sealed off sliding sleeve with gasket, not can guarantee required pressure or flow in such cases, there are biggish security risks.
In the invention, by increasing flow restriction, it communicate feed liquor can not completely with liquid is returned, even if when returning liquid opening
Afterwards, guarantee system pressure is resealed by control force effect.Specifically, sliding sleeve will return liquid and work after contacting sealing with gasket
It is separated as chamber, valve rod is separated with gasket, and feed liquor is communicated with working chamber at this time.When by biggish hydraulic shock, even if punching
It hits so that sliding sleeve is separated with gasket, due to the presence of constriction, sliding sleeve and constriction gap very little throttle in fine crack make at this time
Under, feed liquor directly will not largely flow into back liquid, and the control force of sliding sleeve is bigger than separating liquid pressure in such cases, sliding sleeve meeting
Again sealing is contacted with gasket, guarantees the safe and stable of system.
The reversing valve core that the invention provides is fabricated construction, and screwed part is connected by elastic spring and valve hole part
It is connected into one, can be relatively rotated between the two.In assembling and dissembling process, valve hole part is inserted into back-out by the screw-in of screwed part
Or take out of, valve hole part itself is without rotation.Effectively reduce processing and assembly precision, it is entirely avoided in disassembly process spool with
Valve body scuffing.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection scope within.
Claims (8)
1. a kind of insert type change-over valve core, it is characterised in that: including screwed part and be inserted into screwed part locating slot simultaneously
The valve hole part that can be relatively rotated with screwed part；The valve hole part include insert body, the sliding sleeve in insert body and
It is inserted into the valve rod of insert body；The valve stem end is inserted into sliding sleeve；The insert body inner wall is close equipped with being formed with sliding sleeve
The gasket of envelope, and be close to gasket in insert body inner wall and be equipped with constriction, sliding sleeve can be passed freely through in constriction inner cavity.
2. a kind of insert type change-over valve core according to claim 1, it is characterised in that: the screwed part and valve hole part
It is connected by elastic spring.
3. a kind of insert type change-over valve core according to claim 1, it is characterised in that: the sliding sleeve towards gasket one
Side is equipped with inclined-plane auxiliary section, matched on gasket to be equipped with inclined-plane sealing.
4. a kind of insert type change-over valve core according to claim 1, it is characterised in that: the whole knot annular in shape of the constriction
Structure, periphery are fixed on insert body inner wall.
5. a kind of insert type change-over valve core according to claim 1, it is characterised in that: the valve hole part end, which is equipped with, matches
Section is closed, is slidably matched between the cooperation section and locating slot inner wall.
6. a kind of insert type change-over valve core according to claim 1, it is characterised in that: the insert body, sliding sleeve, valve rod
Three's coaxial arrangement.
7. a kind of insert type change-over valve core according to any one of claims 1 to 6, it is characterised in that: the valve rod and cunning
First seal is equipped between set.
8. a kind of insert type change-over valve core according to any one of claims 1 to 6, it is characterised in that: the sliding sleeve and valve
Second seal is equipped between core inner body wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910009541.3A CN109538567B (en) | 2019-01-04 | 2019-01-04 | Plug-in type reversing valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910009541.3A CN109538567B (en) | 2019-01-04 | 2019-01-04 | Plug-in type reversing valve core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109538567A true CN109538567A (en) | 2019-03-29 |
| CN109538567B CN109538567B (en) | 2024-04-05 |
Family
ID=65834208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910009541.3A Active CN109538567B (en) | 2019-01-04 | 2019-01-04 | Plug-in type reversing valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109538567B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19938884A1 (en) * | 1999-08-17 | 2001-02-22 | Schaeffler Waelzlager Ohg | Oil flow valve for an IC motor has a small an inexpensive proportional magnet to move the slide against a low pressure spring with ring grooves of a structured geometry for the oil flows |
| EP1491804A1 (en) * | 2003-06-26 | 2004-12-29 | Pacific Industrial Co., Ltd. | Valve core |
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-
2019
- 2019-01-04 CN CN201910009541.3A patent/CN109538567B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN203656261U (en) * | 2013-12-24 | 2014-06-18 | 上海立新液压有限公司 | Plug-in mounting solenoid reversing valve |
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| CN206738281U (en) * | 2017-05-02 | 2017-12-12 | 广东华液动力科技有限公司 | A kind of super-pressure stacking type hydraulic control check valve |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109538567B (en) | 2024-04-05 |
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