CN207278606U - A kind of reversal valve for continuous sampling - Google Patents
A kind of reversal valve for continuous sampling Download PDFInfo
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- CN207278606U CN207278606U CN201721258383.8U CN201721258383U CN207278606U CN 207278606 U CN207278606 U CN 207278606U CN 201721258383 U CN201721258383 U CN 201721258383U CN 207278606 U CN207278606 U CN 207278606U
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- spool
- sealing shroud
- valve
- switching valve
- valve body
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Abstract
A kind of reversal valve for continuous sampling, including spool, switching valve sealing shroud and valve body, valve body inlet opening is wherein formed with valve body, valve body fluid hole and first, second liquid-changing hole, switching valve sealing shroud is sealingly mounted at valve inner, spool clearance seal is installed on inside switching valve sealing shroud, switching valve sealing shroud leads to structure in being, the switching valve sealing shroud lower part is connected with valve body inlet opening, it is formed with switching valve sealing shroud side wall and first, the sealing shroud liquid-changing hole that second liquid-changing hole communicates and the sealing shroud fluid hole communicated with valve body fluid hole, integrally make spool limit base in switching valve sealing shroud top, the banking stop for being useful for limitation spool axial displacement is fixedly mounted inside spool limit base, and spool limit base top is provided with for controlling the rotating photo-electric control portion of spool；Valve core inside, which tilts to run through, is formed with first through hole and the second through hole.The reversal valve can solve the problems, such as solenoid valve response lag in the prior art, be effectively improved the precision of liquid sampling by carrying out directly monitoring control to Spool rotating displacement.
Description
Technical field
The utility model belongs to the valve used in machinery equipment field, especially a kind of commutation for continuous sampling
Valve.
Background technology
In current techniques, the reversal valve of liquid sampling is mainly solenoid directional control valve or solenoid valve, and wherein electromagnetism is adjusted
Although valve sampling precision is higher, its cost is higher, thus apply and required precision less in the total amount to liquid sampling compared with
In high experiment.It is and often directly real using the mode such as solenoid directional control valve and sensor cooperation in the factory of a large amount of liquid samplings
Existing high-precision liquid sampling, but this common solenoid directional control valve is relied primarily on and is installed on the upper and lower spool road of solenoid valve
The signal of sensor feedback control closure, control mode has larger hysteresis quality, it is smart can not to be accurately controlled each pipeline
True liquid sampling.
By the retrieval of patent document, following two related patent documents are found：
A kind of gas distribution device (CN200720058067.6) for gas heater discloses one kind and is used for combustion gas
The gas distribution device of water heater, including the double section valve cores of combustion gas valve body, cylinder, the double section valve cores of cylinder are installed on combustion
In air valve main body, two mutually isolated blast tubes four, five are equipped with the valve body of cylindrical double section valve core sides, are fired
The through hole that can be connected with monolithic burner is respectively equipped with gas passage four, five；In the valve master of cylindrical double section valve core opposite sides
Body is equipped with connected two blast tubes two, three, and has valve seat to be provided with controllable blast tube three on blast tube three and open
With the self-priming valve of pass, blast tube one is equipped with cylindrical double section valve core one end, passage one, which is equipped with, to be led to respectively with combustion gas
The through hole that road five, two connects, the double section valve core bodies of cylinder are equipped with the groove connected with blast tube three, four.This practicality is new
Type lowest temperature rise can be made very low, effectively solve the problems, such as that summer water is too boiling hot, save combustion gas；And the acquirement of low temperature is not required to excessive
Water flow, therefore save water resource.
A kind of micro hydraulic control valve device (CN201010294339.9) discloses a kind of micro hydraulic control valve device, belongs to observing and controlling
Technology, is related to a kind of micro hydraulic control valve device, and valve body links together with valve deck, and spool is directly through valve body, and axial restraint
On valve body, it is characterized in that, spool radial position setting is fluted, and hose one, hose two, hose three are connected with cross pipe
Valve inner is placed in, hose four is connected with cross pipe to be placed in outside valve body, and hose five is also placed in valve body, hose five, soft
Guan Sizai is connected with sensor, and jackscrew is additionally provided with hose one, hose two, hose three, hose five, and spool sets four shelves
Position, as spool rotates between four gears, each hose is opened or closed respectively.Its advantage is to realize leading to for a variety of solution
Disconnected handoff functionality, prevents solution from mixing molecule reverse movement under liquid, leakage and off working state, meets leakage rate to be nano level
Micro blazed-grating requirement, is particularly suitable for small space, multichannel, low-pressure, small flow, No leakage, the special JA(junction ambient) of not mixed liquid.
By the contrast of technical characteristic, it is applicant's understanding that the technical solution and this patent of above-mentioned two patent documents
Application differs.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, there is provided a kind of reversal valve for continuous sampling,
Can solve the problems, such as solenoid valve response lag in the prior art by carrying out directly monitoring control to Spool rotating displacement, have
Improve to effect the precision of liquid sampling.
A kind of reversal valve for continuous sampling, including spool, switching valve sealing shroud and valve body, are wherein formed with valve on valve body
Body inlet opening, valve body fluid hole and first, second liquid-changing hole, switching valve sealing shroud are sealingly mounted at valve inner, spool gap
Sealing is installed on inside switching valve sealing shroud, and switching valve sealing shroud leads to structure, the switching valve sealing shroud lower part and valve body in being
Inlet opening connects, and the sealing shroud liquid-changing hole and and valve body communicated with first, second liquid-changing hole is formed with switching valve sealing shroud side wall
Spool limit base is integrally made on the sealing shroud fluid hole that fluid hole communicates, switching valve sealing shroud top, and spool limit base inside is solid
Dingan County is equipped with the banking stop for being used for limiting spool axial displacement, and spool limit base top is provided with for controlling spool rotating
Photo-electric control portion；Valve core inside, which tilts to run through, is formed with first through hole and the second through hole.
Moreover, link slot is formed with the top of spool, spool middle part is formed with seal spool ring recess and is oriented to annular groove, spool top system
There is limiting groove.
Moreover, being formed with eccentric orfice on banking stop, which is installed in the limiting groove on spool top.
Moreover, photo-electric control portion includes external motor, optical coupled switch and blanking disc, external motor output terminal and spool top
The link slot connection being formed with, optical coupled switch are symmetrically packed at the top of spool limit base, and blanking disc is fixedly set in spool top, and
The thang-kng groove being adapted with optical coupled switch is provided with blanking disc.
Moreover, the top that switching valve sealing shroud outer wall corresponds to valve body fluid hole is formed with switching valve sealing shroud seal groove.
Moreover, multiple valve body mounting holes are provided with valve body.
The advantages of the utility model and economic effect are：
1st, the utility model is monitored the swing offset of spool by the optical coupled switch of photoelectric eye, is outer by optical coupled switch
Portion's motor provides working signal, controls spool to carry out quickly rotation in a manner of this direct monitoring and controlling to spool displacement dynamic
Make, effectively solve conventional solenoid valve monitoring piping flow feedback control motor open and close response lag caused by again, liquid
The problems such as body sampling precision is not high.
2nd, the utility model is using switching valve sealing shroud, spool limit base integrated setting, using switching valve sealing shroud
Limit base holds out against switching valve sealing shroud, to prevent spool from repeatedly driving switching valve sealing in switching valve sealing shroud internal rotating
Set rotates at the same time, and sealing shroud liquid-changing hole and first, second liquid-changing hole of valve body such as are not adapted at the failure generation caused by.In addition
The switching valve sealing shroud limit base can also play the role of easy disassembly switching valve sealing shroud.
3rd, the utility model carries out switching valve sealing shroud using the banking stop being installed in switching valve sealing shroud limit base
Axial limiting, prevents switching valve sealing shroud first, second through hole caused by axial displacement not to be adapted to sealing shroud liquid-changing hole
Or the failure such as leakage occurs；In addition eccentric orfice is provided with spool banking stop, and spool banking stop is co-axially mounted with spool, the peace
Dress mode can also be easy to the dismounting to spool banking stop and spool, easy to tie up while ensureing to carry out axial limiting to spool
Repair or replace switching valve sealing shroud, valve core seal ring.
4th, the utility model is using control Spool rotating, and then controls first, second for penetrating through and being arranged in the middle part of spool logical
Hole rotates, further, first, second liquid-changing hole on first, second through hole alternate communication switching valve sealing shroud, so as to fulfill
Switching valve sealing shroud inlet opening does not stop feed liquor, sealing shroud fluid hole does not stop liquid, first, second liquid-changing hole of valve body constantly replaces
The technological process of sampling.
Brief description of the drawings
Fig. 1 is the stereogram of the utility model；
Fig. 2 is the front view of the utility model；
Fig. 3 is the Section A-A sectional view of Fig. 2；
Fig. 4 is the left view of Fig. 2；
Fig. 5 is the section B-B sectional view of Fig. 4；
Fig. 6 is the utility model spool and switching valve sealing shroud sectional view；
Fig. 7 is the partial enlarged view of Fig. 6；
Fig. 8 is state a period of time spool catenation principle figure；
Spool catenation principle figure when Fig. 9 is state two.
In figure：1- optical coupled switch；2- thang-kng grooves；3- blanking discs；4- link slots；5- spool limit bases；The first liquid-changing holes of 6-；
7- valve body fluid holes；8- valve bodies；9- first through hole；10- spools；11- banking stops；12- switching valve sealing shrouds；13- sealings are bought or get by illegal means
Fluid apertures；The second liquid-changing holes of 14-；15- valve body inlet openings；16- switching valve sealing shroud seal grooves；The second through holes of 17-；18- is oriented to
Annular groove；19- limiting grooves；20- eccentric orfices；21- valve body mounting holes；22- seal spool ring recess；23- sealing shroud fluid holes.
Embodiment
For that can further appreciate that the contents, features and effects of the utility model, the following examples are hereby given, and coordinates attached drawing
Describe in detail as follows.It should be noted that the present embodiment is descriptive, it is not limited, it is impossible to thus limit this practicality
New protection domain.
A kind of reversal valve for continuous sampling, including spool 10, switching valve sealing shroud 12 and valve body 8, wherein on valve body
Valve body inlet opening 15,7 and first, second liquid-changing hole of valve body fluid hole are formed with, switching valve sealing shroud is sealingly mounted at valve inner,
Spool clearance seal is installed on inside switching valve sealing shroud, switching valve sealing shroud logical structure in being, under the switching valve sealing shroud
Portion is connected with valve body inlet opening, and the sealing shroud liquid-changing hole communicated with first, second liquid-changing hole is formed with switching valve sealing shroud side wall
13 and the sealing shroud fluid hole 23 that is communicated with valve body fluid hole, spool limit base 5, spool are integrally made in switching valve sealing shroud top
The banking stop 11 for being useful for limitation spool axial displacement is fixedly mounted inside limit base, and spool limit base top is provided with and is used for
Control the rotating photo-electric control portion of spool；Valve core inside, which tilts to run through, is formed with 9 and second through hole 17 of first through hole.
Link slot is formed with the top of spool, spool middle part is formed with seal spool ring recess 22 and is oriented to annular groove 18, spool top system
There is limiting groove.
Eccentric orfice 20 is formed with banking stop, which is installed in the limiting groove 19 on spool top.
Photo-electric control portion includes external motor, optical coupled switch 1 and blanking disc 3, and external motor output terminal at the top of spool with making
Some link slots 4 connect, and optical coupled switch is symmetrically packed at the top of spool limit base, and blanking disc is fixedly set in spool top, and
The thang-kng groove 2 being adapted with optical coupled switch is provided with blanking disc.
The top that switching valve sealing shroud outer wall corresponds to valve body fluid hole is formed with switching valve sealing shroud seal groove 16.
Multiple valve body mounting holes 21 are provided with valve body.
More clearly to describe the specifically used mode of the utility model, a kind of example is provided below：
Structural principle：
The reversal valve of the utility model leads to the switching valve sealing shroud and valve body of the same two-position four-way valve of liquid principle, wherein reversal valve
Clearance fit assembles, and is sealed by the sealing ring in switching valve sealing shroud seal groove, and spool is matched somebody with somebody with switching valve sealing shroud gap
Dress is combined, and is sealed by the sealing ring in seal spool ring recess, and warp-wise branch is provided for spool by the guide ring in guiding annular groove
Support, for preventing spool from occurring with switching valve sealing shroud out-of-alignment situation.Spool limit base is bolted with valve body, uses
To fasten switching valve sealing shroud, prevent switching valve sealing shroud axial displacement and the rotating failure of warp-wise.In addition, optical coupled switch
Spool limit base top is bolted to, blanking disc is fixedly set at the top of spool, and thang-kng groove is formed with blanking disc, while valve
The output terminal of external motor is connected with the top of core by link slot, optical coupled switch is by the data transfer of thang-kng groove swing offset outside
In portion's PLC controller, and by the rotation of exterior PLC controller control external motor, in the reversal valve of the utility model, thang-kng groove
180 ° are often rotated, reversal valve all can alternately replace working status.
It is noted that the valve body of the utility model, valve body liquid outlet is arranged on the top of valve body, and valve body inlet is set
In body base center, and first, second liquid-changing hole warp-wise is arranged on the center on valve body two sides, particularly, because reversal valve uses
During both bores the reagent bottle of various concentrations solution is connected by plunger pump respectively, to prevent valve body external force uneven
Caused valve body tilts, and then causes solution flow direction in reversal valve to change, and influences sampling precision, therefore set and be used to connect two plungers
First, second liquid-changing hole of pump is sustained height.
Workflow：
First, second liquid-changing hole be can liquid inlet and outlet two-direction hole, spool in working status for the moment (as shown in Figure 8), the
One liquid-changing hole 6 is connected with sealing shroud fluid hole by first through hole, and the second liquid-changing hole 14 passes through with switching valve sealing shroud inlet opening
Second through hole connects；Spool (as shown in Figure 9) in working status two, the second liquid-changing hole are logical by first with sealing shroud fluid hole
Hole connects, and the first liquid-changing hole is connected with switching valve sealing shroud inlet opening by the second through hole.
Working status is for the moment：First liquid-changing hole is used to liquid, and the second liquid-changing hole is used for feed liquor；
During working status two (external motor controls 180 ° of Spool rotating)：First liquid-changing hole is used for feed liquor, and second changes liquid
Hole is used to liquid.
Because the reversal valve of the utility model only has 2 two kinds of operating modes of working status one and working status, and no matter spool position
In which kind of operating mode, switching valve sealing shroud inlet opening is in into liquid status, sealing shroud fluid hole is in out liquid status all the time all the time, i.e.,
The reversal valve of the utility model ensure that the continuity of liquid sampling by way of alternately passing in and out and changing liquid, and realization passes through control
Motor speed, reaches the practical art of the different samplings of control solution.
The reversal valve of the utility model is small, compact-sized.Inner seal rings do sealing material using polytetrafluoroethylene (PTFE)
The characteristics of matter, has corrosion-resistant, ne-leakage, and sealing effect is good.
Reversal valve is small, compact-sized.Inner seal rings do sealed material using polytetrafluoroethylene (PTFE), have corrosion resistant
The characteristics of erosion, ne-leakage, sealing effect is good.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of the appended claims for the utility model.
Claims (6)
1. a kind of reversal valve for continuous sampling, including spool, switching valve sealing shroud and valve body, are wherein formed with valve body on valve body
Inlet opening, valve body fluid hole and first, second liquid-changing hole, switching valve sealing shroud are sealingly mounted at valve inner, and spool gap is close
Envelope is installed on inside switching valve sealing shroud, and switching valve sealing shroud leads to structure in being, the switching valve sealing shroud lower part and valve body into
Fluid apertures connects, and is formed with the sealing shroud liquid-changing hole communicated with first, second liquid-changing hole on switching valve sealing shroud side wall and goes out with valve body
The sealing shroud fluid hole that fluid apertures communicates, it is characterised in that：Integrally make spool limit base, spool in the switching valve sealing shroud top
The banking stop for being useful for limitation spool axial displacement is fixedly mounted inside limit base, and spool limit base top is provided with for controlling
The photo-electric control portion of Spool rotating processed；The valve core inside, which tilts to run through, is formed with first through hole and the second through hole.
A kind of 2. reversal valve for continuous sampling according to claim 1, it is characterised in that：It is formed with the top of the spool
Seal spool ring recess is formed with the middle part of link slot, spool and guiding annular groove, spool top are formed with limiting groove.
A kind of 3. reversal valve for continuous sampling according to claim 1 or 2, it is characterised in that：On the banking stop
Eccentric orfice is formed with, which is installed in the limiting groove on spool top.
A kind of 4. reversal valve for continuous sampling according to claim 1 or 2, it is characterised in that：The photo-electric control
Portion includes external motor, optical coupled switch and blanking disc, and external motor output terminal is connected with the link slot being formed with the top of spool, optocoupler
Switch is symmetrical to be packed at the top of spool limit base, and blanking disc is fixedly set in spool top, and is provided with blanking disc and optocoupler
Switch the thang-kng groove being adapted.
A kind of 5. reversal valve for continuous sampling according to claim 1, it is characterised in that：The switching valve sealing shroud
The top that outer wall corresponds to valve body fluid hole is formed with switching valve sealing shroud seal groove.
A kind of 6. reversal valve for continuous sampling according to claim 1, it is characterised in that：It is provided with the valve body
Multiple valve body mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721258383.8U CN207278606U (en) | 2017-09-28 | 2017-09-28 | A kind of reversal valve for continuous sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721258383.8U CN207278606U (en) | 2017-09-28 | 2017-09-28 | A kind of reversal valve for continuous sampling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207278606U true CN207278606U (en) | 2018-04-27 |
Family
ID=61988251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721258383.8U Active CN207278606U (en) | 2017-09-28 | 2017-09-28 | A kind of reversal valve for continuous sampling |
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| CN (1) | CN207278606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918463A (en) * | 2018-07-20 | 2018-11-30 | 无锡市航鹄科技有限公司 | A kind of scanning galvanometer on laser radar |
-
2017
- 2017-09-28 CN CN201721258383.8U patent/CN207278606U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918463A (en) * | 2018-07-20 | 2018-11-30 | 无锡市航鹄科技有限公司 | A kind of scanning galvanometer on laser radar |
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