CN202661138U - Miniature piston-type normal flow device - Google Patents
Miniature piston-type normal flow device Download PDFInfo
- Publication number
- CN202661138U CN202661138U CN 201220269446 CN201220269446U CN202661138U CN 202661138 U CN202661138 U CN 202661138U CN 201220269446 CN201220269446 CN 201220269446 CN 201220269446 U CN201220269446 U CN 201220269446U CN 202661138 U CN202661138 U CN 202661138U
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- piston
- piston cylinder
- pipeline
- valve
- flow device
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Abstract
The utility model relates to a miniature piston-type normal flow device which comprises a piston cylinder, a piston moving in a left-and-right mode in the piston cylinder along the piston cylinder, a liquid inlet pipeline and a liquid outlet pipeline. An adjusting piece is respectively arranged at the left end and the right end of the piston cylinder, the liquid inlet pipeline is divided into two pipelines to be connected with the left end and the right end of the piston cylinder respectively, and a valve is installed on each pipeline of the liquid inlet pipeline. The liquid outlet pipeline is divided into two pipelines to be connected with the left end and the right end of the piston cylinder respectively, and a valve is installed on each pipeline of the liquid inlet pipeline. Four electrically operated valves (or solenoid valves) are adopted to replace four-way valves. The miniature piston-type normal flow device is simple in structure, strong in reliability and high in accuracy.
Description
Technical field
The utility model relates to a kind of micro-piston-type normal flow device.
Background technology
Active piston formula flow apparatus partly is comprised of mechanical part and automatically controlled and data acquisition process.Mechanical part is mainly by piston cylinder, piston, and servomotor, reducing gear, ball-screw, grating, pipeline pass in and out valve and base, support, mounting platform, the compositions such as limit switch.Piston is by driven by motor, installs heavierly, and requires high to motor.
Passive piston type flow apparatus is by piston cylinder, piston, optoelectronic switch, and four-way valve or two timing circuit and terminal valve and pipeline form, and its shortcoming is that the four-way valve difficulty of processing is large, and sealing requirements is high, and standard volume, and is non-adjustable; Two timing circuits also can only limited minimizing piston cylinder volume.
Summary of the invention
The purpose of this utility model is, for the deficiencies in the prior art, provides a kind of micro-piston-type normal flow device, and simple in structure, precision is high.
The technical solution of the utility model is, a kind of micro-piston-type normal flow device, comprise the piston, feed liquor pipeline and the fluid pipeline that move along the piston cylinder left and right directions in piston cylinder, the piston cylinder, regulating part is installed respectively at the two ends, the left and right sides of described piston cylinder, described feed liquor pipeline is divided into the two ends, the left and right sides that two-way is connected respectively to piston cylinder, and on each road feed liquor pipeline valving; Described fluid pipeline is divided into the two ends, the left and right sides that two-way is connected respectively to piston cylinder, and on each road fluid pipeline valving.
Described regulating part is screw rod.
Valve is optional with motorized valve or solenoid valve.
Principle of work of the present utility model as shown in Figure 1, open liquid flowing valve 1 and fluid valve 3, fluid enters piston cylinder 8 right-hand members, pushing piston 7 is moved to the left, fluid flows out to tested table through fluid valve 3, when piston touched left end screw rod 5 top, built-in sensors generation signal was closed liquid flowing valve 1 and fluid valve 3 to computing machine; Open again liquid flowing valve 2 and fluid valve 4, this moment, fluid flowed into the piston cylinder left end through liquid flowing valve 2, pushing piston moves right, fluid flows out to tested table through fluid valve 4, and when piston touched right-hand member screw rod 6 top, built-in sensors sent signal, close liquid flowing valve 2 and fluid valve 4, open liquid flowing valve 1 and fluid valve 3, iterative cycles can obtain the arbitrary standards volume again.
The volume 2.5000L that the design piston is discharged to left movement, moving right the volume of discharging water is 2.4986L, and the volume of discharging fluid take round trip is as standard, and then standard volume is 4.9986L.Survey 6 secondary data as follows: 4.9996L, 5.0002L, 5.0000L, 4.9974L, 4.9980L, 4.9976L.Mean value is: 4.9988L, repeatability is: 0.024%.
The utlity model has following technique effect:
(1) adopt four motorized valves (or solenoid valve) to replace four-way valve, structure is simpler, and reliability is stronger, and precision is higher;
(2) the piston cylinder two ends arrange adjusting screw, can the adjustment criteria volume be integer, are convenient to value and mould the source;
(3) adopt and piston end surface parallel surface location, the standard volume value is more accurate;
(4) spread the piston type flow apparatus and reduce standard volume by the dual-time method, this device directly allows piston reciprocating, can obtain the arbitrary standards volume, more can improve the device accuracy.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
Embodiment
As shown in Figure 1, a kind of micro-piston-type normal flow device, comprise piston cylinder 8, piston cylinder 8 interior piston 7, feed liquor pipeline 9 and the fluid pipelines 10 that move along piston cylinder 8 left and right directions, regulating part 5 and regulating part 6 are installed respectively in the two ends, the left and right sides of described piston cylinder, described feed liquor pipeline 9 is divided into the two ends, the left and right sides that two-way is connected respectively to piston cylinder 8, and at each road feed liquor pipeline installing motorized valve 1 and motorized valve 2; Described fluid pipeline 10 is divided into the two ends, the left and right sides that two-way is connected respectively to piston cylinder 8, and at each road fluid pipeline 10 installing motorized valve 3 and motorized valve 4.
Regulating part 5 and regulating part 6 are screw rod.
Claims (4)
1. micro-piston-type normal flow device, comprise the piston (7), feed liquor pipeline (9) and the fluid pipeline (10) that move along piston cylinder (8) left and right directions in piston cylinder (8), the piston cylinder (8), it is characterized in that, regulating part (5 is installed respectively at the two ends, the left and right sides of described piston cylinder, 6), described feed liquor pipeline (9) is divided into the two ends, the left and right sides that two-way is connected respectively to piston cylinder (8), and on each road feed liquor pipeline valving (1,2); Described fluid pipeline (10) is divided into the two ends, the left and right sides that two-way is connected respectively to piston cylinder (8), and at the upper valving (3,4) of each road fluid pipeline (10).
2. described micro-piston-type normal flow device according to claim 1 is characterized in that, described regulating part (5,6) is screw rod.
3. described micro-piston-type normal flow device according to claim 1 is characterized in that, described valve (1,2,3,4) is motorized valve.
4. described micro-piston-type normal flow device according to claim 1 is characterized in that, described valve (1,2,3,4) is solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220269446 CN202661138U (en) | 2012-06-08 | 2012-06-08 | Miniature piston-type normal flow device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220269446 CN202661138U (en) | 2012-06-08 | 2012-06-08 | Miniature piston-type normal flow device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202661138U true CN202661138U (en) | 2013-01-09 |
Family
ID=47456040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220269446 Expired - Fee Related CN202661138U (en) | 2012-06-08 | 2012-06-08 | Miniature piston-type normal flow device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202661138U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542915A (en) * | 2013-10-31 | 2014-01-29 | 湖南省计量检测研究院 | Gas small flow standard device |
| CN109781213A (en) * | 2017-11-10 | 2019-05-21 | 上海扬基电子科技有限公司 | A kind of pneumatic propulsion bidirectional double-shaft piston type checking table |
-
2012
- 2012-06-08 CN CN 201220269446 patent/CN202661138U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542915A (en) * | 2013-10-31 | 2014-01-29 | 湖南省计量检测研究院 | Gas small flow standard device |
| CN103542915B (en) * | 2013-10-31 | 2016-09-14 | 湖南省计量检测研究院 | A kind of gas small flow standard device |
| CN109781213A (en) * | 2017-11-10 | 2019-05-21 | 上海扬基电子科技有限公司 | A kind of pneumatic propulsion bidirectional double-shaft piston type checking table |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20130608 |