CN2232577Y - Flow switch with pollution insulation protection cover - Google Patents
Flow switch with pollution insulation protection cover Download PDFInfo
- Publication number
- CN2232577Y CN2232577Y CN 94247203 CN94247203U CN2232577Y CN 2232577 Y CN2232577 Y CN 2232577Y CN 94247203 CN94247203 CN 94247203 CN 94247203 U CN94247203 U CN 94247203U CN 2232577 Y CN2232577 Y CN 2232577Y
- Authority
- CN
- China
- Prior art keywords
- flow switch
- switch
- utility
- model
- protective sleeve
- 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.)
- Expired - Fee Related
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- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
The utility model relates to a flow switch. When the flow switch is adopted, the lower part of the corrugated pipe of a sealing mechanism is added with a funnel-shaped pollution insulation protection cover; so the impurity can be prevented to enter into an inner cavity to generate clogging phenomenon, and the service life of the switch can be improved by 5 times. The utility model can be used for the cooling water tubes of the hydraulic power station, the fire power station and the industrial system. The utility model can also be used for monitoring the flow quantity of the oil pumping pipelines of the oil well and monitoring the flow quantity of the fluid pipelines of the chemical industry.
Description
The utility model belongs to the fluid flow switch.
The fluid flow switch is to show aneroid stream by flowing big or small value with liquid, and the Bellows seal type pipeline target-type flow measurement mechanism of existing structure requires high to medium.SLX type as Dongfang Electric Machinery Plant shows the stream signalling means, and the LKB/01 type flow switch of Far East instrucment and meter plant is normal because of the chemical substance of separating out in impurity dirt or the medium enters corrugated tube, and results in blockage, and makes flow measurement malfunctioning switch or measure inaccurate.
A kind of reliable in action is provided, and the flow switch of long service life is a purpose of this utility model.
Characteristics of the present utility model are to install a funnel-form protective sleeve additional in the bottom of the sylphon seal structure of flow switch, and big mouthful is fixed under the flanged plate of switch, and osculum cooperates with the target bar, in case the impurity dirt enters corrugated tube, results in blockage.
Little concora crush hole can be arranged, so that inside and outside Medium Exchange on the sidewall of protective sleeve.
Structure of the present utility model is illustrated in conjunction with the embodiments:
Accompanying drawing is flow switch (bottom) synoptic diagram of band every dirty protective sleeve.Wherein: 1, nut; 2, O-ring seal; 3, bellows component; 4, the target bar; 5, rotating shaft; 6, mounting flange; 7, pressure ring; 8, every dirty protective sleeve; 9, target; 10, threeway; 11, O-ring seal.
Under the ripple sealed tube of existing target-type flow switch, install the thin-walled funnel-form made by non-metallic elastic material (rubber, latex) additional every dirty protective sleeve (8); pressure ring (7) by annular is used screw in compression; the upper end be fixed on mounting flange (5) below; target bar (4) passes the cylindrical hole of protective sleeve lower end; the gap is 0.5～2mm, also can open the little concora crush hole of some φ 1～2mm on the sidewall of protective sleeve.So that medium can enter the inner chamber of corrugated tube and protective sleeve, suspending sundries then is difficult for entering, owing to determine its characteristic every the resilient material and the size of dirty protective sleeve, also minimum to the additional force that the target bar produces, can ignore.
Also can not perforate on the sidewall of protective sleeve; and do not have the gap with the target bar and cooperate, this just requires before it is installed, and is that the inner chamber of protective sleeve is full of the cleaning medium identical with pipeline medium character earlier at corrugated tube; with pipe clamp protective sleeve is clamped sealing then, make inside and outside media isolated.Like this, any foul all can not enter inner chamber influences the action of target bar.
The utility model has the advantages that switch is not stopped up, reliable in action, increase by 500 service life, joint Economized a large amount of repair times.
The utility model can be widely used in the cooling water pipe of power station, thermal power station and industrial system, stone The monitoring of oil industry oil well oil pumping pipeline and chemical industry fluid circuit flow.
Claims (2)
1. one kind by gear train, and sealing mechanism and measure the flow switch that gauge outfit is formed is characterized in that the bottom of sealing mechanism corrugated tube installs a funnel-form protective sleeve additional, and big mouthful of cover is fixed under the flanged plate of switch, and osculum cooperates with the target bar.
2. according to the described flow switch of claim 1, it is characterized in that having little concora crush hole on the sidewall of protective sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94247203 CN2232577Y (en) | 1994-12-09 | 1994-12-09 | Flow switch with pollution insulation protection cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94247203 CN2232577Y (en) | 1994-12-09 | 1994-12-09 | Flow switch with pollution insulation protection cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2232577Y true CN2232577Y (en) | 1996-08-07 |
Family
ID=33852490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94247203 Expired - Fee Related CN2232577Y (en) | 1994-12-09 | 1994-12-09 | Flow switch with pollution insulation protection cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2232577Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108895A (en) * | 2019-04-30 | 2019-08-09 | 正洲泵阀制造有限公司 | For the overspeed monitoring appliance in fluid delivery pipeline |
-
1994
- 1994-12-09 CN CN 94247203 patent/CN2232577Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108895A (en) * | 2019-04-30 | 2019-08-09 | 正洲泵阀制造有限公司 | For the overspeed monitoring appliance in fluid delivery pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |