CN208125236U - A kind of liquid level detection device based on magnetic element - Google Patents
A kind of liquid level detection device based on magnetic element Download PDFInfo
- Publication number
- CN208125236U CN208125236U CN201820735240.XU CN201820735240U CN208125236U CN 208125236 U CN208125236 U CN 208125236U CN 201820735240 U CN201820735240 U CN 201820735240U CN 208125236 U CN208125236 U CN 208125236U
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- China
- Prior art keywords
- liquid level
- circuit board
- detection bar
- magnetic element
- detection device
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- 238000001514 detection method Methods 0.000 title claims abstract description 70
- 239000007788 liquid Substances 0.000 title claims abstract description 45
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 208000010086 Hypertelorism Diseases 0.000 description 1
- 206010020771 Hypertelorism of orbit Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Level Indicators Using A Float (AREA)
Abstract
The utility model discloses a kind of liquid level detection devices based on magnetic element, including detection bar and external magnet block, it is equipped with transmitter in the upper end of detection bar, the bottom end of detection bar extends to the bottom of testing liquid container, is equipped with buoyant mass on the top of external magnet block；Detection bar includes shell, is encapsulated in the intracorporal circuit board of shell, circuit board is from top to bottom arranged in shell along the length direction of detection bar, it is from top to bottom successively parallel with Hall sensor on circuit boards, signal output end is equipped in the upper end of circuit board, each Hall sensor is connected to signal output end, signal output end electrical connection corresponding with transmitter.The utility model is using Hall sensor as magnetic element, it is arranged on the circuit board in detection bar, external magnet block floats with the height of liquid level, Hall sensor in detection bar detects magnetic field, output signal to transmitter, transmitter outputting standard signal again, realizes the accurate detection of liquid level.
Description
Technical field
The utility model relates to liquid level detection device technical fields, and in particular to a kind of level sensing based on magnetic element
Device.
Background technique
Liquidometer is the device for the liquid level of liquid medium in detection container, and the type of liquidometer has tuning fork vibration
Formula, maglev type, pressure type, ultrasonic wave, magnetic turning plate formula etc., existing liquidometer uses tongue tube more, since tongue tube is glass
Material, higher cost are easily broken during transport, production, installation, sensor are caused to go wrong, influence using；And
Away from big, accuracy is difficult to improve tongue tube clipping room, cannot long range detection.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of liquid level detection devices based on magnetic element.
In order to solve the above technical problems, the utility model adopts the following technical solution：
A kind of liquid level detection device based on magnetic element, including detection bar and external magnet block are designed, in the detection
The upper end of bar is equipped with transmitter, and the bottom end of the detection bar extends to the bottom of testing liquid container, in the external magnet block
Top be equipped with buoyant mass；
The detection bar includes shell, is encapsulated in the intracorporal circuit board of the shell, and the circuit board is along the detection bar
Length direction is from top to bottom arranged in the shell, is from top to bottom successively parallel with Hall sensor on the circuit board,
It is equipped with signal output end in the upper end of the circuit board, each Hall sensor is connected to the signal output end, the letter
The electrical connection corresponding with the transmitter of number output end.
In the above-mentioned technical solutions, using Hall sensor as magneto sensor, Hall sensor is from top to bottom and townhouse
On circuit boards, external magnet block is swum on liquid level cloth under the action of buoyant mass, and as the height of liquid level is floated, peace
It is located at the Hall sensor at liquid level on detection bar internal circuit board and detects magnetic field, outputs signal to transmitter, pick-up
Device again outputting standard signal to distal end detection device and display equipment to get the elevation information for having arrived liquid level, realize liquid level
Detection.
Preferably, described buoyant mass one end is fixed together with the external magnet block, and the other end is equipped with connecting plate, in institute
Connecting plate is stated equipped with mounting hole, the diameter of the mounting hole is greater than the diameter of the detection bar, and the connecting plate passes through described
Mounting hole is sleeved in the detection bar.
By the way that buoyant mass is arranged on external magnet block, it is ensured that magnet block is swum on liquid level, is avoided under magnet block
Heavy, buoyant mass is linked together by connecting plate and detection bar, and it is certain can to guarantee that magnet block and detection bar remain at
Distance, the hypertelorism for avoiding magnet block from floating, and connecting plate is sleeved on outside detection bar, can be floated with buoyant mass, with buoyancy
Block is maintained at same height, will not influence freely floating for magnet block, guarantees that testing result is unaffected.
Preferably, the buoyant mass and connecting plate are an integral molding structure, and are polyurethane foam plastics material, can
Guarantee that the buoyancy of magnet block is more stable.
Preferably, there is protective shell in the outer enclosure of the external magnet block, the protective shell is polytetrafluoroethylene (PTFE) material.
Protective shell can directly contact to avoid external magnet block with the liquid of detection, prevent magnet block by defaced.
Preferably, the circuit board is flexible circuit board.Flexible circuit board is easy to produce, transports, and can arbitrarily intercept
Length, it is convenient and practical.
Preferably, corrosion-resistant finishes is equipped in the hull outside.
Preferably, the shell is stainless steel material.
The beneficial effects of the utility model are：
1. the utility model, as magnetic element, is arranged on the circuit board in detection bar using Hall sensor, external
Magnet block floats with the height of liquid level, and the Hall sensor in detection bar detects magnetic field, outputs signal to transmitter, pick-up
Device outputting standard signal again, realizes the accurate detection of liquid level.
2. Hall sensor is small in size, the spacing being arranged on circuit boards can also be further decreased, and be conducive to improve detection
Precision, be easy to implement over long distances detect；And at low cost, reliable performance.
3. buoyant mass is arranged on external magnet, advantageously ensures that magnet block stabilization is swum on liquid level, can also be achieved floating
Connection between power block and detection bar avoids magnet block floating from influencing signal or loss too far；Shell can be using metal if not
Rust steel material, and circuit board top does not need the energy-storage travelling wave tubes such as capacitor and inductor, can be realized explosion-proof function.
4. the utility model is compared with the existing liquid level detection device using tongue tube, more securely and reliably, Neng Goushi
Existing liquid level accurately detect, the detection of long range, solves that tongue tube liquid level detection device volume is big, range is short, detection accuracy is low, appearance
The problems such as easily broken.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of liquid level detection device of the utility model based on magnetic element；
Fig. 2 is the set-up mode schematic diagram of Hall sensor on circuit boards；
Fig. 3 is the circuit connection diagram of Hall sensor；
Fig. 4 is the structural schematic diagram of buoyant mass and connecting plate；
Figure label：1 is detection bar, and 2 be external magnet block, and 3 be transmitter, and 4 be testing liquid container, and 5 be buoyant mass,
6 be Hall sensor, and 7 be circuit board, and 8 be connecting plate, and 9 be mounting hole, and 10 be liquid level.
Specific embodiment
Illustrate specific embodiment of the present utility model with reference to the accompanying drawings and examples, but the following example only uses
It is described in detail the embodiments of the present invention, does not limit the scope of the utility model in any way.
Embodiment 1：A kind of liquid level detection device based on magnetic element, referring to figures 1-4, including detection bar 1 and external
Magnet block 2 is equipped with transmitter 3 in the upper end of detection bar 1, and the bottom end of detection bar 1 extends to the bottom of testing liquid container 4,
The top of external magnet block 2 is equipped with buoyant mass 5；5 one end of buoyant mass is fixed together with external magnet block 2, and the other end, which is equipped with, to be connected
Fishplate bar 8 is equipped with mounting hole 9 on connecting plate 8, and the diameter of mounting hole 9 is greater than the diameter of detection bar 1, and connecting plate 8 passes through mounting hole
9 are sleeved in detection bar 1.Buoyant mass 5 and connecting plate 8 are an integral molding structure, and are polyurethane foam plastics material；Outside
The outer enclosure for setting magnet block 2 has protective shell, and protective shell is polytetrafluoroethylene (PTFE) material.
Detection bar 1 includes shell, is encapsulated in the intracorporal circuit board 7 of shell, circuit board 7 along detection bar 1 length direction by upper
It is arranged in shell to lower, Hall sensor 6 is from top to bottom successively parallel on circuit board 7, is equipped in the upper end of circuit board 7
Signal output end, each Hall sensor are connected to signal output end, signal output end electrical connection corresponding with transmitter 3.Its
In, circuit board 7 is flexible circuit board；Shell is stainless steel material, is equipped with corrosion-resistant finishes in hull outside.
Related equipment component is conventional equipment element unless otherwise instructed in the embodiment above.
The specific working mode of liquid level detection device of the utility model based on magnetic element is：It will test bar to be vertically arranged
In testing liquid container, the bottom end of detection bar is made to extend to the bottom of container, external magnet block top is fixed on buoyant mass
Together, it swims in external magnet block stabilization on liquid level, magnet block is avoided to sink；Buoyant mass is structure as a whole with connecting plate, even
Fishplate bar is sleeved on outside detection bar by mounting hole, so that magnet block and detection bar is remained a certain distance, is avoided magnet block
Floating influences signal too far.When liquid level changes, magnet block is floated with liquid level position, at liquid level position suddenly
You receive magnetic field signal by sensor, and send transmitter to by the signal output end on circuit board, and transmitter exports mark again
Calibration signal realizes the detection of liquid level to the display equipment and detection device of distal end.Wherein the detection device of distal end and
Existing conventional equipment can be used to realize signal reception and display function in display equipment.
The embodiments of the present invention is elaborated above in conjunction with drawings and examples, but the utility model
It is not limited to the above embodiment, within the knowledge of a person skilled in the art, this can also not departed from
It changes or changes under the premise of utility model objective.
Claims (7)
1. a kind of liquid level detection device based on magnetic element, which is characterized in that including detection bar and external magnet block, described
The upper end of detection bar is equipped with transmitter, and the bottom end of the detection bar extends to the bottom of testing liquid container, in the external magnetic
The top of iron block is equipped with buoyant mass；
The detection bar includes shell, is encapsulated in the intracorporal circuit board of the shell, length of the circuit board along the detection bar
Direction is from top to bottom arranged in the shell, is from top to bottom successively parallel with Hall sensor on the circuit board, in institute
The upper end for stating circuit board is equipped with signal output end, and each Hall sensor is connected to the signal output end, and the signal is defeated
Outlet electrical connection corresponding with the transmitter.
2. the liquid level detection device according to claim 1 based on magnetic element, which is characterized in that described buoyant mass one end
It is fixed together with the external magnet block, the other end is equipped with connecting plate, and mounting hole, the installation are equipped on the connecting plate
The diameter in hole is greater than the diameter of the detection bar, and the connecting plate is sleeved in the detection bar by the mounting hole.
3. the liquid level detection device according to claim 2 based on magnetic element, which is characterized in that the buoyant mass and company
Fishplate bar is an integral molding structure, and is polyurethane foam plastics material.
4. the liquid level detection device according to claim 1 based on magnetic element, which is characterized in that in the external magnet
The outer enclosure of block has protective shell, and the protective shell is polytetrafluoroethylene (PTFE) material.
5. the liquid level detection device according to claim 1 based on magnetic element, which is characterized in that the circuit board is soft
Property circuit board.
6. the liquid level detection device according to claim 1 based on magnetic element, which is characterized in that in the hull outside
Equipped with corrosion-resistant finishes.
7. the liquid level detection device according to claim 1 based on magnetic element, which is characterized in that the shell is stainless
Steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820735240.XU CN208125236U (en) | 2018-05-17 | 2018-05-17 | A kind of liquid level detection device based on magnetic element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820735240.XU CN208125236U (en) | 2018-05-17 | 2018-05-17 | A kind of liquid level detection device based on magnetic element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208125236U true CN208125236U (en) | 2018-11-20 |
Family
ID=64185049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820735240.XU Expired - Fee Related CN208125236U (en) | 2018-05-17 | 2018-05-17 | A kind of liquid level detection device based on magnetic element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208125236U (en) |
-
2018
- 2018-05-17 CN CN201820735240.XU patent/CN208125236U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181120 |