CN2085955U - Liquid level sensor - Google Patents
Liquid level sensor Download PDFInfo
- Publication number
- CN2085955U CN2085955U CN 90221954 CN90221954U CN2085955U CN 2085955 U CN2085955 U CN 2085955U CN 90221954 CN90221954 CN 90221954 CN 90221954 U CN90221954 U CN 90221954U CN 2085955 U CN2085955 U CN 2085955U
- Authority
- CN
- China
- Prior art keywords
- liquid level
- change gear
- corrosion
- level sensor
- band
- 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.)
- Withdrawn
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- Level Indicators Using A Float (AREA)
Abstract
The utility model relates to a liquid level sensor which uses a float and a band as the displacement transmission elements and makes the displacement linearly turned into the increase or the decrease of the impulse number by a photoelectric code wheel and a photoelectric coupled device to indicate the liquid level. The band and the weight droppers at the two ends of the band are separated by an insulation pipe, which effectively prevents the corrosion and makes the operation normal. So the utility model is an efficient sensor for measuring the corrosive liquid.
Description
Liquid level sensor be by float, band as the displacement transfer element, the BL of liquid level is indicated in the increase and decrease that displacement is become pulse number by photoelectric code disk and photoelectric coupling circuit.
Existing liquid level sensor is made up of float and counter weight that the support of change gear, change gear, the band of walking around change gear and band two ends connect, and the change gear axle has gear train, and gear train is connected with potentiometer.When float during, rotate and the change of gear train band potentiometer by change gear, by potentiometer output electric signal, conversion processing indication liquid level again with liquid level change.But the float of this liquid level sensor, be with and join the hammer that hangs down and directly contact with liquid and steam thereof, strong acid-base resistance corrodes, and the structural member of gear train and potentiometer is many.Electric potential signal enters digital instrument or computing, also will carry out conversion of signals in secondary instrument and become pulse.
The purpose of this utility model is to provide a kind of liquid level sensor of corrosive liquid.
Liquid level sensor of the present utility model still have change gear, change gear support, walk around the sagging band of change gear and be connected in counter weight with a sagging end.Its design feature is: sagging band and counter weight are with anti-corrosion isolated tube outward; Be with another low end to be connected with magnetic hammer, and be positioned at another anti-corrosion isolated tube equally, anti-corrosion isolated tube is with anti-corrosion magnetic float outward; The coaxial photoelectric code disk that is equipped with of change gear, the photoelectric code disk side is provided with photoelectric coupling circuit.Like this, anti-corrosion isolated tube is kept apart tested corrosive liquids and magnetic hammer, counter weight and the sagging bands that hang two hammers, effectively prevents the corrosion of corrosive liquid to magnetic hammer, counter weight and sagging band, guarantees to work normally.Be located at the outer anti-corrosion magnetic float of isolated tube of isolating magnetic hammer, swim in the liquid, move up and down along with liquid level change.Magnetic hammer magnetic action in anti-corrosion magnetic float and the isolated tube makes magnetic hammer move up and down or locate with the corrosion stability float.Magnetic hammer is along with same moved further, and driving belt also can same moved further.Band around change gear affects change gear and coaxial photoelectric code disk to rotate synchronously again.Photoelectric code disk rotates relative to the photoelectric coupling circuit of its side direction, and photoelectric coupling circuit will detect pulse signal.Pulse signal and displacement are linear.The pulse signal of measuring just can be input in the secondary instrument of amplification, correction, direction judgment circuit and digital processing demonstration, needn't carry out conversion of signals, does not have transformed error.
To affect change gear more reliable in order making to take, not produce relative slippage errors, the change gear circumference can have the taper clothes-hook, preferably evenly distributes.Longitudinally arrange the hanging hole that has correspondence at band.For the accuracy of sensing, be with preferably steel band.For making band can reliably hang over clothes-hook continuously, and fall in the isolated tube under vertical, below change gear with both sides tape guide roller can be housed respectively.Isolated tube is made by corrosion resistant material.For the utility model liquid level sensor of deep-etching liquid such as strong acid, highly basic, its isolated tube is a polytetrafluoroethylmaterial material for well.The shell of anti-corrosion magnetic float can be resistant material, in include magnet steel, annular magnetic steel preferably.Its shell is preferably polytetrafluoroethylmaterial material.Have recessedly outside magnetic hammer or counter weight, the recessed ball that studs with makes magnetic hammer, counter weight move friction relative to the isolated tube inwall and reduces, and makes level sensing more reliable.
Liquid level sensor of the present utility model is compared with existing technology, has following advantage:
1. can in corrosive liquids, use, can in liquid such as strong acid, highly basic, carry out level sensing especially, and guarantee long-term the use.
2. liquid level sensor good reliability.
Accompanying drawing has been represented the synoptic diagram of a kind of liquid level sensor of the utility model.
Further specify liquid level sensor of the present utility model below in conjunction with the accompanying drawing example.This liquid level sensor is made up of support 9, change gear 7, steel band 5, magnetic hammer 2, counter weight 13, isolated tube 1, anti-corrosion magnetic float 3,4 and photoelectric code disk 11, photoelectronic coupler 9.Change gear is rotationally connected with the support 9 of change gear.Steel band 5 is walked around change gear 7 upper peripheral edge, and the steel band two ends are sagging.The change gear outer rim is uniform to have three taper clothes-hooks 10, and the steel band correspondence has equidistant hanging hole.Steel band one end is connecting magnetic hammer 2, and all is positioned at a upright isolated tube 1.The steel band other end is connecting counter weight, and all is positioned at another upright isolated tube 14.Isolated tube 1 overcoat anti-corrosion magnetic float.Annular float shell 4 that anti-corrosion magnetic float is made of corrosion-resistant material and the annular magnetic steels 3 that are loaded in the shell 4 are formed.Magnet steel 3 is fixed in outer casing inner wall.Vertical in order to ensure the direction that change gear both sides steel band is sagging, below change gear, the both sides of sagging steel band are equipped with tape guide roller 6 and tape guide roller 12 respectively.Two isolated tubes 1,14 can be connected with the support lower end of change gear 7, they are fused.The coaxial photoelectric code disk that connecting at the change gear back side.The side, notch place of photoelectric code disk is provided with two photoelectric coupling circuits, and photoelectric coupling circuit can be fixedly connected on the support 9 of change gear.Isolated tube and anti-corrosion magnetic float shell are polytetrafluoroethylmaterial material.Anti-corrosion magnetic float swims in the corrosive liquids, and two isolated tubes vertically insert in the corrosive liquid, and the isolated tube upper end is in the flow container upper end.The support of change gear is fixed on the upper end of flow container.When the in-tank corrosion liquid level change, float is along with moving up and down, and drives magnetic hammer by annular magnetic steel, drives photoelectric code disk again by steel band, change gear and rotates.Photoelectric code disk sends secondary instrument to and handles relative to the digital signal that photoelectric coupling circuit rotates, and indicates the new liquid level of variation.Or indicate jar reserves, or lifting rate, liquor charging amount.
Claims (5)
1, liquid level sensor contain change gear 7, change gear support 9, walk around change gear and sagging with 5 and be connected in counter weight 13 with a sagging end, it is characterized in that sagging band and counter weight are with anti-corrosion isolated tube 1 outward, another low end with 5 is connected with magnetic hammer 2 and is positioned at another anti-corrosion isolated tube 14, be with anti-corrosion magnetic float 3,4 outside the anti-corrosion isolated tube 14, the change gear 7 coaxial photoelectric code disks 11 that are equipped with, the photoelectric code disk side is provided with photoelectricity combined device 8.
2, liquid level sensor according to claim 1 is characterized in that the change gear circumference has taper clothes-hook 10, and band is longitudinally arranged and had corresponding hanging hole.
3,, it is characterized in that the both sides of change gear below, band are equipped with tape guide roller 6,12 respectively according to the said liquid level sensor of claim 2.
4,, it is characterized in that isolated tube and anti-corrosion magnetic float shell are polytetrafluoroethylmaterial material according to claim 1 or 2 or 3 said liquid level sensors.
5, according to the said liquid level sensor of claim 4, it is recessed to it is characterized in that magnetic hammer, the counter weight outside have, the recessed ball that studs with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90221954 CN2085955U (en) | 1990-10-09 | 1990-10-09 | Liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90221954 CN2085955U (en) | 1990-10-09 | 1990-10-09 | Liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2085955U true CN2085955U (en) | 1991-10-02 |
Family
ID=4899989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90221954 Withdrawn CN2085955U (en) | 1990-10-09 | 1990-10-09 | Liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2085955U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353424A (en) * | 2011-07-14 | 2012-02-15 | 苏州苏控自动化设备有限公司 | Triaxial liquid level meter with magnetic reversible column |
| CN102749126A (en) * | 2012-07-05 | 2012-10-24 | 秦皇岛华电测控设备有限公司 | Built-in magnetic liquidometer |
-
1990
- 1990-10-09 CN CN 90221954 patent/CN2085955U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353424A (en) * | 2011-07-14 | 2012-02-15 | 苏州苏控自动化设备有限公司 | Triaxial liquid level meter with magnetic reversible column |
| CN102353424B (en) * | 2011-07-14 | 2013-02-06 | 苏州苏控自动化设备有限公司 | Triaxial liquid level meter with magnetic reversible column |
| CN102749126A (en) * | 2012-07-05 | 2012-10-24 | 秦皇岛华电测控设备有限公司 | Built-in magnetic liquidometer |
| CN102749126B (en) * | 2012-07-05 | 2016-08-17 | 秦皇岛华电测控设备有限公司 | Built-in magnetic liquidometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |