CN101694244A - Liquid flow path distribution valve - Google Patents
Liquid flow path distribution valve Download PDFInfo
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- CN101694244A CN101694244A CN200910207624A CN200910207624A CN101694244A CN 101694244 A CN101694244 A CN 101694244A CN 200910207624 A CN200910207624 A CN 200910207624A CN 200910207624 A CN200910207624 A CN 200910207624A CN 101694244 A CN101694244 A CN 101694244A
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- flow path
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- tube
- liquid flow
- path distribution
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Abstract
The invention discloses a liquid flow path distribution valve, comprising a valve shell, a sealed cavity formed by the valve shell and a stepping motor, wherein the tail end of an output shaft of the stepping motor is connected with a rotating shaft; the other end of the rotating shaft, far from the output shaft of the motor, is provided with a liquid-flow pipe; one end of the liquid-flow pipe, at the tail end of the rotating shaft, is a liquid-flow pipe outlet, and the other end thereof is a liquid-flow pipe inlet; the end of the rotating shaft, close to the output shaft of the motor, is externally sheathed with a rotary stopping disc; and the valve shell at the liquid-flow pipe inlet is provided with a plurality of liquid inlet holes which are arranged corresponding to the rotary stopping disc and communicated with the liquid-flow pipe inlet. Compared with the prior art, the liquid flow path distribution valve has good sealing performance and wear resistance and is a low-cost liquid flow path distribution valve.
Description
Technical field
The present invention relates to a kind of liquid flow path distribution valve, especially relate to the liquid flow path distribution valve that liquid medium is distributed of technical fields such as a kind of clinical laboratory medicine automatic clinical chemistry analyzer, precision chemical analysis.
Background technique
Liquid flow path distribution valve is the core component of accurate flowmeter, and in biochemical analyzer, its major function is the source and the flow direction of controlling liquid reagent and sample.Prior art generally is made of with the spool that links to each other with motor valve seat, on valve seat, be distributed with the liquid entering hole of some, on spool, establish fluid-through port, utilize the Electric Machine Control spool to rotate to different direction, liquid-through hole is connected with different liquid entering holes, thereby form a complete fluid path, to realize controlling the source of liquid stream and the purpose of direction.Relatively rotate owing to will do between the different liquid entering hole on the fluid-through port on the spool and the valve seat, in rotation process, certainly exist certain running clearance, liquid in the fluid path is seepage from running clearance very easily, thereby it is high to the seal request between each parts that relates to rotation, also require simultaneously spool friction factor when rotating low, wear extent is few, dimensionally stable, higher mechanical strength is arranged, can bear the influence that solvent and environmental change bring for a long time.Current techniques to the design of liquid flow path distribution valve be mainly each parts respectively machining assemble again, the dimensional accuracy of its component is better, but assembling difficulty is big, finished product reject ratio height has increased the weight of cost of production greatly.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art and a kind of good seal performance, wear-resistant, liquid flow path distribution valve cheaply are provided.
For achieving the above object, the present invention has adopted following technical proposals:
This liquid flow path distribution valve, comprise valve housing, the seal chamber that forms by valve housing, and stepper motor, this stepper motor output shaft end is connected with a rotating shaft, described rotating shaft is provided with fluid-through tube away from the other end of motor output shaft, and the end of this fluid-through tube in the rotating shaft tail end is the fluid-through tube outlet, and the other end is the fluid-through tube inlet; Near being arranged with rotation stop bit dish outside the motor output shaft end, the valve housing of described fluid-through tube ingress is provided with the inlet opening that communicates with the fluid-through tube inlet of some corresponding rotation stop bit dishes setting in described rotating shaft.
Described rotation stop bit Pan Chu is provided with optical coupled switch.
Described fluid-through tube is L shaped.
Described fluid-through tube outlet port is provided with the seal ring lid.
Described seal ring covers end and is provided with the cover plate for sealing circle with the cavity connecting place, and described seal ring lid lower end and cavity connecting place and rotating shaft contacting point are provided with the rotating shaft sealing circle.
Described fluid-through tube ingress is provided with the inlet seal circle, and the outlet port is provided with the exit seal circle.
The ingress and the outlet port of described inlet seal circle and exit seal circle and fluid-through tube are interference fit.
Described exit seal circle is the O RunddichtringO, rotating shaft is connected with the dynamic seal (packing) in small volume of fluid-through tube outlet port with the sealing compressing tablet by the sealing circle.
Described inlet opening has three, four, more than five or five, evenly distributes.
Described valve housing and cavity are one-body molded.
By technique scheme, thereby this invention has following beneficial effect:
1, valve housing and cavity adopt mold injection molding, and first mate's degree reduces the single-piece work cost, has guaranteed dimensionally stable, has reduced the component reject ratio.The product matrix of making has bigger rigidity and mechanical strength, and the top layer has less friction factor and stronger wear resistance;
2, rotating shaft adopts poly-tetrafluoro halogen second rare (plastics king) to process, and it and the interference of elastomeric fluorine rubber " O " type inlet seal circle closely cooperate, and have guaranteed sealed precision; In addition, because the plastics king has very strong wear resistance, therefore also guaranteed the working life of product;
3, the port of countershaft and fluid-through tube outlet is connected and adopts by gluing " O " type exit seal circle that connects of AB and seal compressing tablet, can dynamic seal (packing) in small volume;
4, reach the level of external like product in sealed precision and working life, compare with the similar products in current market, assemble simple and reliablely, whole cost advantage is obvious.
Description of drawings
Fig. 1 is sectional view during with the fluid-through tube connection for the inlet opening of liquid flow path distribution valve of the present invention.
Sectional view when Fig. 2 does not connect for the inlet opening of liquid flow path distribution valve of the present invention and fluid-through tube.
Embodiment
Below in conjunction with accompanying drawing the present invention is made further instruction.
As shown in Figure 1 and Figure 2, this liquid flow path distribution valve, comprise by the integrated valve housing 10 of injection moulding mode, the seal chamber 4 that forms by valve housing, and stepper motor 1, these stepper motor output shaft 11 ends are connected with a rotating shaft 3, and described rotating shaft is provided with L shaped fluid-through tube 12 away from the other end of motor output shaft, the end of this fluid-through tube in the rotating shaft tail end is the fluid-through tube outlet, and the other end is the fluid-through tube inlet; Near being arranged with rotation stop bit dish 2 outside the motor output shaft end, the valve housing of described fluid-through tube ingress is provided with the inlet opening 13 that communicates with the fluid-through tube inlet of some corresponding rotation stop bit dishes setting in described rotating shaft; Corresponding described rotation stop bit Pan Chu is provided with the optical coupled switch that the record stepper motor rotates, on rotation stop bit dish, an aperture is arranged, the moving circle of motor revolution, aperture also overlaps once with the position of optical coupled switch, write down the position and the rotation of stepper motor according to this, in order to next step continuation shunting.
For making cavity is a sealed space, furthermore, described fluid-through tube outlet port is provided with seal ring lid 6, and described seal ring covers end and is provided with the cover plate for sealing circle with the cavity connecting place), described seal ring lid lower end and cavity connecting place and rotating shaft contacting point are provided with rotating shaft sealing circle 9; Described fluid-through tube ingress is provided with inlet seal circle 8 simultaneously, and the outlet port is provided with exit seal circle 7; And the ingress and the outlet port of described inlet seal circle and exit seal circle and fluid-through tube are interference fit, reach to closely cooperate.Specifically, described exit seal circle is the O RunddichtringO, is made by elastomeric fluorine rubber, rotating shaft is connected with the dynamic seal (packing) in small volume of fluid-through tube outlet port with the sealing compressing tablet by the sealing circle.Simultaneously, rotating shaft adopts poly-tetrafluoro halogen second rare (plastics king) to process, and seal ring all is to be made by elastomeric fluorine rubber, thereby can protect sealing; The port of countershaft and fluid-through tube outlet is connected employing by gluing " O " type exit seal circle that connects of AB and sealing compressing tablet, can dynamic seal (packing) in small volume.
Inlet opening 13 can be arranged to three, four, more than five or five, on valve body, evenly distribute according to different requirements.
With respect to prior art, valve housing and cavity adopt mold injection molding, and first mate's degree reduces the single-piece work cost, has guaranteed dimensionally stable, has reduced the parts fraction defective. The product matrix of making has bigger rigidity and mechanical strength, and the top layer has littler coefficient of friction and stronger wearability; Rotating shaft adopts polytetrafluoro halogen second rare (King) machine to add part, and it and the interference of elastomeric fluorubber " O " type inlet seal circle closely cooperate, and have guaranteed sealed precision; In addition, because King has very strong wearability, therefore also guaranteed the service life of product; The port that countershaft is connected with fluid-through tube connects employing by gluing " O " type exit seal circle that connects of AB and sealing compressing tablet, can dynamic seal (packing) in small volume, thereby so that reach the level of same kind of products at abroad in sealed precision and service life, compare with the similar products of Vehicles Collected from Market, assemble simple and reliablely, holistic cost is with the obvious advantage.
Claims (10)
1. liquid flow path distribution valve, comprise valve housing (10), the seal chamber (4) that forms by valve housing, and stepper motor (1), this stepper motor output shaft (11) end is connected with a rotating shaft (3), described rotating shaft is provided with fluid-through tube (12) away from the other end of motor output shaft, and the end of this fluid-through tube in the rotating shaft tail end is the fluid-through tube outlet, and the other end is the fluid-through tube inlet; It is characterized in that: near being arranged with rotation stop bit dish (2) outside the motor output shaft end, the valve housing of described fluid-through tube ingress is provided with the inlet opening (13) that communicates with the fluid-through tube inlet of some corresponding rotation stop bit dishes setting in described rotating shaft.
2. liquid flow path distribution valve as claimed in claim 1 is characterized in that: described rotation stop bit Pan Chu is provided with optical coupled switch.
3. liquid flow path distribution valve as claimed in claim 1 or 2 is characterized in that: described fluid-through tube is L shaped.
4. liquid flow path distribution valve as claimed in claim 1 or 2 is characterized in that: described fluid-through tube outlet port is provided with seal ring lid (6).
5. liquid flow path distribution valve as claimed in claim 4, it is characterized in that: described seal ring covers end and is provided with cover plate for sealing circle (5) with the cavity connecting place, and described seal ring lid lower end and cavity connecting place and rotating shaft contacting point are provided with rotating shaft sealing circle (9).
6. liquid flow path distribution valve as claimed in claim 5 is characterized in that: described fluid-through tube ingress is provided with inlet seal circle (8), and the outlet port is provided with exit seal circle (7).
7. liquid flow path distribution valve as claimed in claim 6 is characterized in that: the ingress and the outlet port of described inlet seal circle and exit seal circle and fluid-through tube are interference fit.
8. liquid flow path distribution valve as claimed in claim 7 is characterized in that: described exit seal circle is the O RunddichtringO, rotating shaft is connected with the dynamic seal (packing) in small volume of fluid-through tube outlet port with the sealing compressing tablet by the sealing circle.
9. liquid flow path distribution valve as claimed in claim 1 or 2 is characterized in that: described inlet opening (13) has three, four, more than five or five, evenly distributes.
10. liquid flow path distribution valve as claimed in claim 1 or 2 is characterized in that: described valve housing and cavity are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910207624XA CN101694244B (en) | 2009-10-15 | 2009-10-15 | Liquid flow path distribution valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910207624XA CN101694244B (en) | 2009-10-15 | 2009-10-15 | Liquid flow path distribution valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101694244A true CN101694244A (en) | 2010-04-14 |
| CN101694244B CN101694244B (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910207624XA Active CN101694244B (en) | 2009-10-15 | 2009-10-15 | Liquid flow path distribution valve |
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| Country | Link |
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| CN (1) | CN101694244B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245791A (en) * | 2013-05-02 | 2013-08-14 | 深圳市凯特生物医疗电子科技有限公司 | Integral low-pressure ion exchange glycosylated hemoglobin analyzer |
| CN106195349A (en) * | 2016-09-09 | 2016-12-07 | 深圳市凯特生物医疗电子科技有限公司 | A kind of six tunnel fluid path distributing valves for glycolated hemoglobin analysis |
| CN107636371A (en) * | 2015-06-23 | 2018-01-26 | 马自达汽车株式会社 | The manufacture method of the valve body of hydraulic pressure control device and the valve body |
| CN111677912A (en) * | 2020-06-15 | 2020-09-18 | 北京沄汇智能科技有限公司 | Heavy liquid shunting device for sink-float experiment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2693533B1 (en) * | 1992-07-09 | 1994-10-14 | Europ Propulsion | Electrically operated valve with fully sealed distributor valve. |
| CN2568905Y (en) * | 2002-08-27 | 2003-08-27 | 天津市天飞高科技发展有限公司 | Positioning regulation feedback mechanism of electric regulating valve |
| CN2806919Y (en) * | 2005-06-16 | 2006-08-16 | 曹宇凡 | Hidden water tap with digital temperature controller |
| CN201554902U (en) * | 2009-10-15 | 2010-08-18 | 深圳市凯特生物医疗电子科技有限公司 | Liquid flow path distributing valve |
-
2009
- 2009-10-15 CN CN200910207624XA patent/CN101694244B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245791A (en) * | 2013-05-02 | 2013-08-14 | 深圳市凯特生物医疗电子科技有限公司 | Integral low-pressure ion exchange glycosylated hemoglobin analyzer |
| CN107636371A (en) * | 2015-06-23 | 2018-01-26 | 马自达汽车株式会社 | The manufacture method of the valve body of hydraulic pressure control device and the valve body |
| CN107636371B (en) * | 2015-06-23 | 2019-10-08 | 马自达汽车株式会社 | The valve body of hydraulic pressure control device |
| CN106195349A (en) * | 2016-09-09 | 2016-12-07 | 深圳市凯特生物医疗电子科技有限公司 | A kind of six tunnel fluid path distributing valves for glycolated hemoglobin analysis |
| CN106195349B (en) * | 2016-09-09 | 2019-10-25 | 深圳市凯特生物医疗电子科技有限公司 | A kind of six tunnel fluid path distributing valves for glycolated hemoglobin analysis |
| CN111677912A (en) * | 2020-06-15 | 2020-09-18 | 北京沄汇智能科技有限公司 | Heavy liquid shunting device for sink-float experiment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101694244B (en) | 2012-07-04 |
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