CN202266696U - Integral joint design of external conduit clusters of multichannel fluid distributor - Google Patents
Integral joint design of external conduit clusters of multichannel fluid distributor Download PDFInfo
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- CN202266696U CN202266696U CN2011203078654U CN201120307865U CN202266696U CN 202266696 U CN202266696 U CN 202266696U CN 2011203078654 U CN2011203078654 U CN 2011203078654U CN 201120307865 U CN201120307865 U CN 201120307865U CN 202266696 U CN202266696 U CN 202266696U
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- extruding type
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- type conduit
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Abstract
The utility model relates to an integral joint design of external conduit clusters of a multichannel fluid distributor, which includes a fixed valve core and a plurality of external conduit clusters, wherein a plurality of fluid channels are machined in the fixed valve core; the external conduit clusters include at least three press-fit conduits; the multiple fluid channels in the fixed valve core include press-fit fluid channels with the same number as the press-fit conduits; the front ends of the press-fit conduits are inserted into the interference seal channel through the outer side of the fixed valve core; and the press-fit conduits and the fixed valve core are fixedly and hermetically connected through the interference fit formed between the squeeze conduits and the interference seal channel.
Description
Technical field
The utility model relates to the whole Interface design of equipment external catheter bunch, the whole Interface design of particularly a kind of multichannel fluid distributor and its external catheter bunch.
Background technique
Field of analytic instrument need be used a large amount of multichannel fluid distributors, for example multiposition valve, stream switch etc.These equipment tend to connect a lot of external catheters; For as surpass 8 multiposition valve or stream switch more than the port; The connection interface of its external catheter bunch and fluid distributor takes up space and increases gradually; Attended operation is complicated gradually, and therefore, the Interface design of the external catheter of multichannel fluid distributor bunch is one of important component part in the fluid distributor design.
Fig. 1 has shown the Cheminert multiposition valve structural representation (http://www.vici.com/cval/cval.php) of Valco Instruments Co.Inc. company; The place ahead of main valve body 3 is a fixed valve plug 1; Be processed with some fluid passages in the fixed valve plug 1, comprise common fluid passageway and a some distributing fluids passage that is distributed on the same circumference that is positioned at central authorities.Each above-mentioned fluid passage links to each other in some external catheters of multiposition valve and the fixed valve plug 1.One movable valve plug 2 is installed in the inside of multiposition valve main valve body 3, with fixed valve plug 1 through bolt to main valve body 3 tighten up fixing after, fixed valve plug 1 constitutes sealing surface with the surface of contact of movable valve plug 2.Be processed with a conducting groove on the sealing surface of movable valve plug 2, be adjacent under the situation of sealing at movable valve plug 2 and fixed valve plug 1, said conducting groove can be communicated with fixed valve plug 1 central fluid channel and peripheral distributing fluids passage.When rotating to different amount under the drive of movable valve plug 2 motor in main valve body 3, can the different distribution channel connections on the common fluid passageway of fixed valve plug 1 central authorities and fixed valve plug 1 outer ring be realized that the distribution of convection cell is controlled.
In known systems; The Interface design of the external catheter that is connected with multiposition valve bunch is as shown in Figure 2: be processed with several tapped holes 13 in the outer end of fixed valve plug 11 each fluid passage 12 (perhaps constituting on the valve body of fixed relationships with fixed valve plug 11); Each conduit 16 in the external catheter bunch passes the inipple 15 of a band central through bore separately; Insert in the fixed valve plugs 11 in the corresponding fluid passage 12 conduit 16 front end sleeve upper sealing washers 14 back; Behind the threaded together joint 13, can seal washer 14 be pressed in fluid passage 12 in the outer part on the step end face 17 of an end tightly, seal washer 14 inwardly squeezes the back by compression simultaneously; Conduit 16 is extruded a groove and tightly compressing, extracted easily by external force to prevent conduit 16.At seal washer 14 and conduit 16, and under the acting in conjunction of seal washer 14 and the sealing of 17 of fluid passage step end faces, can realize the sealing of corresponding fluids passage 12 in external each conduit 16 and the fixed valve plug 11.
Above-mentioned known design has following deficiency:
1. because the sealing of each external catheter of valve body and fixed valve plug and compress design and adopted inipple to tighten and install additional the mode of forward end seal pad, make that respectively distributing the shared space of port is 2-3 times of the own space of conduit at least.For the conduit of 3.2 millimeters of external diameters, its sealing and the diameter of tightening the joint device will reach the 7-10 millimeter.If the distribution port of multiposition valve is above 5; This will make the diameter of the distribution circumference that respectively distributes port on the spool increase 2-3 doubly; The size that this has just increased fixed valve plug and whole valve body has widely perhaps limited and in limited area, has realized the more design of overabsorption passage.Fig. 3 is the valve head plan view of one 6 passage multiposition valve, from figure, can be clear that very much, stays enough installing spaces in order to give 6 inipples 15, and the artificer has to distribute the distribution circumference of port to amplify with 6.
2. the more important thing is: the processing plane degree of two device sealing faces because the sealing effect between fixed valve plug and movable valve plug places one's entire reliance upon; Increasing along with each fluid passage distribution circle diameter; The working area of sealing surface will with square the corresponding increase of relation, this has just strengthened the processing and the sealing difficulty of fixed valve plug and movable valve plug greatly.Simultaneously, the linear distance that the increasing of each fluid passage distribution circle diameter also will increase spool when rotating same angle, the wearing and tearing that strengthened spool, the working life of having reduced spool.
3. in order to solve second problem; The solution of technology is as shown in Figure 4 at present; Beat the sealing surface 19 that inclined hole 18 is communicated with fixed valve plug in the outer end of fixed valve plug 11; So both increase the distribution circumference of each conduit 16 of fixed valve plug 11 outer ends and inipple 15 thereof, reduced the distribution circumference that on fixed valve plug seal face 19, portals each fluid passage again.Fig. 5 is the plan view of Fig. 4.The problem of bringing therefrom is the difficulty of processing that has increased fixed valve plug 11, and fixed valve plug die sinking forming mould cost increases even can't die sinking process, and can only bore a plurality of inclined holes from each angle one by one through mach mode.And; The spool and the excessive problem of valve body overall dimensions that adopt this design not only can't deal with problems and mention in one; But also size and the cost (owing to require the valve core material must wear resistant corrosion resistant, and good processability, valve core material all be very expensive usually) of fixed valve plug have been increased.
4. in addition, adopt mode that inipple tightened and installed additional the forward end seal pad one by one the step of installation pipeline trouble is consuming time relatively, the operation of installation personnel is required than higher.
Summary of the invention
In order to solve the foregoing problems of existing technology, the utility model provides the whole Interface design of a kind of multichannel fluid distributor and its external catheter bunch.
The whole Interface design of the multichannel fluid distributor external catheter of the utility model bunch; Comprise fixed valve plug and external catheter bunch; Be processed with some fluid passages in the said fixed valve plug; The inside end in said each fluid passage is communicated with the sealing surface of fixed valve plug, and an outside end is communicated with each conduit of said external catheter bunch, it is characterized in that: comprise at least 3 extruding type conduits in the said external catheter bunch; Comprise and the consistent extruding type fluid passage of said extruding type conduit number in some fluid passages in the said fixed valve plug; Said extruding type fluid passage is made up of the interference sealing channel that interconnects and conductive channel two-part, and said interference sealing channel is positioned at the side that fixed valve plug outwards connects the extruding type conduit, and the other end of interference sealing channel is communicated with conductive channel; The inside end of said conductive channel is communicated with the sealing surface of fixed valve plug; The internal diameter of the external diameter of said extruding type catheter proximal end and said interference sealing channel constitutes interference fit, and the front end of extruding type conduit inserts the interference sealing channel from the outside of fixed valve plug, through realizing that with interference fit that the interference sealing channel forms the sealing between extruding type conduit and fixed valve plug fixes with being connected.
Said interference sealing channel length in the axial direction is greater than 1 millimeter.
The internal diameter of the internal diameter of said conductive channel and said extruding type conduit differs and is no more than 1 millimeter.
Said interference sealing channel is processed as the circular cone hole that the inner end is thin, the outer end is thick.
The taper ratio in the circular cone hole of said interference sealing channel is between 1: 5 to 1: 300, and the circular diameter difference of the forward and backward end in said circular cone hole is not more than 1/8 of said extruding type conduit diameter.
After said extruding type conduit inserted said interference sealing channel, the inner end in the circular cone hole of the front-end face of extruding type conduit and interference airtight passage distance was less than 0.5 millimeter.
The wall thickness of said extruding type conduit is more than or equal to 0.2 millimeter.
The front end of said extruding type conduit is processed as front fine and rear thick truncated cone.
The outer end of each extruding type fluid passage is processed with a groove greater than said extruding type conduit external diameter in the said fixed valve plug; Before or after said extruding type conduit inserts fixed valve plug; The elastic seal ring that can in the middle of groove injects tackiness agent or is pressed into, have through hole is to strengthen the sealing between extruding type conduit and extruding type fluid passage and to fix.
The far-end of said each extruding type conduit is connected to an end of pipe-tube connector, and the other end of pipe-tube connector connects elongate catheter.Through this Placement, can realize prolongation to the extruding type conduit, allow the user can change the elongate catheter of extruding type conduit simultaneously.
Description of drawings
Shown in Figure 1 is a kind of multiposition valve structural representation in the existing technology
Shown in Figure 2 is the sectional drawing of a kind of six passage multiposition valve external catheter bunch whole Interface design in the existing technology
Shown in Figure 3 is the plan view of a kind of six passage multiposition valves in the existing technology shown in Figure 2
Shown in Figure 4 is the sectional drawing of a kind of ten passage multiposition valve external catheter bunch whole Interface design in the existing technology
Shown in Figure 5 is the plan view of a kind of ten passage multiposition valves in the existing technology shown in Figure 4
Shown in Figure 6 is the generalized section of a kind of ten passage multiposition valve external catheter bunch Interface design of the utility model
Shown in Figure 7 be among Fig. 6 A-A to cross sectional plan view
Embodiment
Fig. 6 and shown in Figure 7 is respectively generalized section and the A-A of external catheter bunch Interface design of a kind of ten passage fluid distributors of the utility model to schematic top plan view, comprises 20,11 extruding type conduits of fixed valve plug, 27,11 pipe-tube connectors 28 of 25,11 forced seal washers and 11 elongate catheter 29.Wherein be processed with 11 extruding type fluid passages 21 in the fixed valve plug 20, these fluid passages comprise the common fluid passageway and ten the distributing fluids passages that are distributed on the same circumference that are positioned at central authorities; Extruding type fluid passage 21 is made up of the interference sealing channel that interconnects 22 and conductive channel 23 two-part; Interference sealing channel 22 is positioned at the side that said fixed valve plug 20 outwards connects extruding type conduit 25; After the front end of extruding type conduit 25 inserts corresponding interference sealing channel 22; Through and interference sealing channel 22 constitute interference fit and realize being sealedly connected and fixed of 20 of extruding type conduits 25 and fixed valve plugs; The other end of interference sealing channel 22 is communicated with said conductive channel 23, and conductive channel 23 inside ends are communicated with the sealing surface 26 of said fixed valve plug; The far-end of each extruding type conduit 25 can be connected to an end of pipe-tube connector 28, and the other end of pipe-tube connector 28 connects elongate catheter 29.Through this Placement, can realize prolongation to extruding type conduit 25, allow the user can change the elongate catheter 29 of extruding type conduit simultaneously.
For the sealing of further strengthening extruding type conduit 25 and 21 of extruding type fluid passages with fix; The outer end of each interference sealing channel 22 is processed with a groove 24 greater than said extruding type conduit 25 external diameters in the fixed valve plug 20; Before or after said extruding type conduit 25 inserts fixed valve plug 20; Can inject tackiness agent at groove 24 places or be pressed in the middle of have a through hole elastic seal ring 27 strengthen the sealing of extruding type conduits 25 and 21 of extruding type fluid passages and fix; For guaranteeing that extruding type conduit 25 has certain elasticity and interference sealability, requires its wall thickness more than or equal to 0.2 millimeter.
As preferred interference sealing channel 22 length in the axial direction greater than 1 millimeter.
Differ as the internal diameter of the internal diameter of preferred conductive channel 23 and said extruding type conduit 25 and to be no more than 1 millimeter.
Be processed as the circular cone hole that the inner end is thin, the outer end is thick as preferred interference sealing channel 22.
Between 1: 5 to 1: 300, the circular diameter difference of the forward and backward end in circular cone hole is not more than 1/8 of said extruding type conduit 25 diameters as the taper ratio in the circular cone hole of preferred interference sealing channel 22.
Behind the said extruding type of preferred extruding type conduit 25 insertions fluid passage 21, the inner end distance in the circular cone hole of the front-end face of said extruding type conduit and interference airtight passage is less than 0.5 millimeter.
As preferably, extruding type conduit 25 can be selected the teflon hard tube for use, and internal diameter is 1.6 millimeters, and external diameter is 3.2 millimeters.
The front end that inserts fixed valve plug 20 as preferred extruding type conduit 25 is processed as front fine and rear thick truncated cone.
As preferably can the elastic seal ring 27 that 11 centres have a through hole being merged into an elastic sealing gasket that has 11 through holes.
The utility model compared with prior art has following beneficial effect:
1. owing to have part or all of conduit and being tightly connected of fixed valve plug to adopt extruding type to insert in each external catheter of fluid distributor bunch and realize sealing and being connected the design of fixing through interference fit; Compared with prior art; For the multichannel fluid distributor that surpasses 5 external-connected ports; This will practice thrift spool and about about 50% the volume of whole valve body, perhaps under limited area, realize the more design of overabsorption passage.For example, can find out with Fig. 7 that at 3.2 millimeters external catheter bunch, in same area, the maximum conduit number that existing technology can be installed is 6 for external diameter, and the conduit number that the utility model can be installed is 10 through comparison diagram 3.
2. the conduit of confirming for quantity is counted requirement, and the required sealing surface of the utility model is littler, this not only help fixed valve plug and movable valve plug seal face processing and sealing, the linear distance when having reduced the spool rotation simultaneously weares and teares the working life of having improved spool.
3. simultaneously; Because the utility model can hold more multithread body passage and corresponding external catheter under limited area; Therefore in certain conduit quantitative range, can directly in fixed valve plug, beat straight hole on the axial direction, and need not adopt the design of beating inclined hole; This has just reduced the difficulty of fixed valve plug die sinking processing, can pass through the mould once-through.
4. in addition, the pipeline mounting type that adopts the extruding type conduit directly to clamp-on is simply direct, and is not only lower to the operation requirement of installation personnel, and saved the cost of inipple and seal washer.
The ten passage multiposition valves that adopted the utility model design proposal to produce; In August, 2011; Its market price is 2500 yuans; And having the cheminert type ten passage multiposition valves of the U.S. Valco company of similar functions, the same period, the market price was more than 9000 yuans, greatly reduced the cost expenditure of domestic partial analysis instrument on material procurement based on the product of the utility model.
Embodiment disclosed herein is exemplary, and it only is for explanation that the utility model is made an explanation, and is not the restriction to the utility model, and predictable improvement of related domain or technician and expansion are included within the protection domain of the utility model.
Claims (10)
1. the whole Interface design of a multichannel fluid distributor external catheter bunch; Comprise fixed valve plug (20) and external catheter bunch; Said fixed valve plug is processed with some fluid passages in (20); The inside end in said each fluid passage is communicated with the sealing surface (26) of fixed valve plug (20); An outside end is communicated with each conduit of said external catheter bunch; It is characterized in that: comprise at least 3 extruding type conduits (25) in the said external catheter bunch, comprise the extruding type fluid passage (21) consistent with said extruding type conduit (25) number in the some fluid passages in the said fixed valve plug (20), said extruding type fluid passage (21) is made up of the interference sealing channel (22) that interconnects and conductive channel (23) two-part; Said interference sealing channel (22) is positioned at the side that fixed valve plug (20) outwards connects extruding type conduit (25); The other end of interference sealing channel (22) is communicated with conductive channel (23), and the inside end of said conductive channel (23) is communicated with the sealing surface (26) of fixed valve plug (20), and the external diameter of said extruding type conduit (25) front end and the internal diameter of said interference sealing channel (22) constitute interference fit; The front end of extruding type conduit (25) inserts the interference sealing channel (22) from the outside of fixed valve plug (20), through realizing that with interference fit that interference sealing channel (22) forms the sealing between extruding type conduit (25) and fixed valve plug (20) fixes with being connected.
2. the whole Interface design of multichannel fluid distributor external catheter according to claim 1 bunch, it is characterized in that: said interference sealing channel (22) length in the axial direction is greater than 1 millimeter.
3. the whole Interface design of multichannel fluid distributor external catheter according to claim 1 bunch, it is characterized in that: the internal diameter of the internal diameter of said conductive channel (23) and said extruding type conduit (25) differs and is no more than 1 millimeter.
4. the whole Interface design of multichannel fluid distributor external catheter according to claim 1 bunch, it is characterized in that: said interference sealing channel (22) is processed as the circular cone hole that the inner end is thin, the outer end is thick.
5. the whole Interface design of multichannel fluid distributor external catheter according to claim 1 bunch; It is characterized in that: the taper ratio in the circular cone hole of said interference sealing channel (22) is between 1: 5 to 1: 300, and the circular diameter difference of the forward and backward end in said circular cone hole is not more than 1/8 of said extruding type conduit (25) diameter.
6. the whole Interface design of multichannel fluid distributor external catheter according to claim 1 bunch; It is characterized in that: after said extruding type conduit (25) inserted said interference sealing channel (22), the inner end in the circular cone hole of the front-end face of extruding type conduit (25) and interference airtight passage (22) distance was less than 0.5 millimeter.
7. the whole Interface design of multichannel fluid distributor external catheter according to claim 1 bunch, it is characterized in that: the wall thickness of said extruding type conduit (25) is more than or equal to 0.2 millimeter.
8. the whole Interface design of multichannel fluid distributor external catheter according to claim 1 bunch, it is characterized in that: the front end of said extruding type conduit (25) is processed as front fine and rear thick truncated cone.
9. the whole Interface design of multichannel fluid distributor external catheter according to claim 1 bunch; It is characterized in that: the outer end of each extruding type fluid passage (21) is processed with a groove (24) greater than said extruding type conduit (25) external diameter in the said fixed valve plug (20); Before or after said extruding type conduit inserts fixed valve plug (20); The elastic seal ring (27) that has through hole in the middle of can locating to inject tackiness agent or be pressed in groove (24) is to strengthen the sealing between extruding type conduit (25) and extruding type fluid passage (21) and to fix.
10. the whole Interface design of multichannel fluid distributor external catheter according to claim 1 bunch; It is characterized in that: the far-end of said each extruding type conduit (25) is connected to an end of pipe-tube connector (28), and the other end of pipe-tube connector (28) connects elongate catheter (29).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203078654U CN202266696U (en) | 2011-08-23 | 2011-08-23 | Integral joint design of external conduit clusters of multichannel fluid distributor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203078654U CN202266696U (en) | 2011-08-23 | 2011-08-23 | Integral joint design of external conduit clusters of multichannel fluid distributor |
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| CN202266696U true CN202266696U (en) | 2012-06-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734496A (en) * | 2012-06-14 | 2012-10-17 | 肖巍 | Integral interface design for multiple-passage fluid distributor and externally-connected conduit cluster |
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2011
- 2011-08-23 CN CN2011203078654U patent/CN202266696U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734496A (en) * | 2012-06-14 | 2012-10-17 | 肖巍 | Integral interface design for multiple-passage fluid distributor and externally-connected conduit cluster |
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| GR01 | Patent grant | ||
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Granted publication date: 20120606 |
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| CX01 | Expiry of patent term |