CN201364190Y - Float type liquid level sensor - Google Patents
Float type liquid level sensor Download PDFInfo
- Publication number
- CN201364190Y CN201364190Y CNU2009201356709U CN200920135670U CN201364190Y CN 201364190 Y CN201364190 Y CN 201364190Y CN U2009201356709 U CNU2009201356709 U CN U2009201356709U CN 200920135670 U CN200920135670 U CN 200920135670U CN 201364190 Y CN201364190 Y CN 201364190Y
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- float
- liquid level
- level sensor
- type liquid
- hold
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Abstract
The utility model discloses a float type liquid level sensor which comprises a main bracket and a float, wherein the main bracket comprises a mounting seat and a mounting arm formed on the mounting seat; a magneto-sensitive switch element which is electrically connected with an external circuit is arranged in the front end of the mounting arm; the float comprises a body and at least one connection arm which is formed by extension of the rear end of the body; a magnetic body is arranged at a position of the rear end of the body corresponding to the magneto-sensitive switch element; and the connection arm is hinged with the mounting arm. The float type liquid level sensor has the beneficial effects of high reliability, long service life, and wide application range.
Description
Technical field
The utility model relates to the liquid level sensor technical field, refers in particular to a kind of float-type liquid level sensor.
Background technology
The standing liquid storage container that places such as pontoon-deck-tank, fuel tank, cistern etc. of liquid level sensor, level condition with liquid in the monitoring liquid storage container, when liquid level rose to the high liquid level of early warning or drop to the low liquid level of early warning, liquid level sensor can send alerting signal.A kind of as in the liquid level sensor of numerous types of float-type liquid level sensor, it has simple in structure, practical advantage, and is widely used.Common float-type liquid level sensor mainly is made of support, float and mechanical contact switch, and wherein, support is fixed on the chamber wall of liquid storage container; Float and described support are hinged, and a switch triggering part is set in the top; Mechanical contact switch is fixed on the described support, and corresponding with the switch triggering part position of described float.When the liquid level in the liquid storage container changed, float is equidirectional lifting along with the lifting of liquid level, switch triggering part on the float is opened or was closed described contact switch and sent alerting signal.
The common mechanical contact switch that liquid level sensor adopted, switch triggering part are the non-tight design, be subject to the influence of applied environment, be used in the liquid level monitoring of the stronger liquid of corrosivity especially, and cause the above-mentioned parts consume and the generation measuring error, and influence serviceable life of sensor, even cause the inefficacy of liquid level sensor.
Summary of the invention
The purpose of this utility model is to solve the existing above-mentioned defective of common float-type liquid level sensor, and a kind of reliability height, long service life, float-type liquid level sensor applied widely are provided.
The utility model is realized above-mentioned purpose by following technical scheme: a kind of float-type liquid level sensor, include a main body rack and a float, wherein, described main body rack includes a mount pad and and is formed at hold-down arm on the described mount pad, and the front end inside of described hold-down arm is provided with a magnetosensitive on-off element that is electrically connected with external circuit; Described float includes a body and at least one linking arm that extends to form from described body rear end, and described body rear end is provided with a magnetic corresponding to described magnetosensitive on-off element place, and described linking arm is articulated in described hold-down arm.
In the above-mentioned float-type liquid level sensor, described magnetosensitive on-off element is a tongue tube.
In the above-mentioned float-type liquid level sensor, described tongue tube is welded on the printed circuit board (PCB), and is electrically connected by a signal wire and external circuit.
In the above-mentioned float-type liquid level sensor, the both sides of the hold-down arm of described main body rack respectively are formed with a hinged block, the both sides, body rear end of described float respectively extend to form a linking arm with hinge hole, and described hinged block is fit among the described hinge hole and realizes the hinged of described linking arm and described hold-down arm.
In the above-mentioned float-type liquid level sensor, be formed with the support member that extends to described hold-down arm rear end on the described mount pad.
In the above-mentioned float-type liquid level sensor, described magnetic is a permanent magnet.
In the above-mentioned float-type liquid level sensor, described rack body and described float all adopt non-magnetic permeability material preparation.
Than common float-type liquid level sensor, the beneficial effects of the utility model are: adopt the magnetosensitive on-off element to cooperate the flip flop equipment of magnetic as liquid level sensor, utilize variable in distance between the two and obtain liquid level information, than the liquid level sensor that adopts mechanical contact switch, its functional reliability has increased significantly, and magnetosensitive on-off element, magnetic is arranged at main body rack respectively, the inside of float, be subjected to the influence of external environment condition less, make the liquid environment of the utility model applicable to number of different types, guaranteed the serviceable life of liquid level sensor, its functional reliability further is provided.
Description of drawings
Fig. 1 is the surface structure synoptic diagram of the utility model float-type liquid level sensor.
Fig. 2 is the sectional structure synoptic diagram of the utility model float-type liquid level sensor.
Embodiment
For more clearly setting forth the purpose of this utility model, technical scheme and advantage, the utility model is described further below in conjunction with the drawings and specific embodiments.
The utility model discloses a kind of float-type liquid level sensor, be used for monitoring the level condition of liquid storage container, it adopts the magnetosensitive on-off element to cooperate magnetic as flip flop equipment, utilizes the switch of variable in distance control magnetosensitive switch between the two, thereby obtains the liquid level information in the liquid storage container.Consult illustrated in figures 1 and 2, the float-type liquid level sensor includes a main body rack 10 and a float 20, wherein, main body rack 10 includes a mount pad 100 and and vertically is formed at hold-down arm 101 on the mount pad 100, and the front end inside of hold-down arm 101 is provided with a magnetosensitive on-off element 102; Float 20 includes a body 200 and at least one linking arm 201 that extends to form from body 200 rear ends, body 200 rear ends are provided with a magnetic 202 corresponding to inner set magnetosensitive on-off element 102 places of hold-down arm 101, and linking arm 201 is articulated on the hold-down arm 101 and makes float 20 to rotate with respect to main body rack 10 around pin joint.
Preferably, magnetic 202 is selected permanent magnet for use.
During use, main body rack 10 is fixed on the chamber wall of liquid storage container, and hinged with it float 20 floats on the liquid level of the liquid such as fuel oil, water etc.When liquid increases and liquid level when rising, float 20 is close to the hold-down arm 101 front end places of main body rack 10 along with rising, the action of a magnetic field that its body 200 inner magnetics 202 that are provided with are produced is in the inner set magnetosensitive on-off element 102 of hold-down arm 101 front ends, makes magnetosensitive on-off element 102 closed and feed back to external circuit; When liquid reduces and liquid level when descending, away from the hold-down arm 101 front end places of main body rack 10, weaken the effect of magnetosensitive on-off element 102 in the magnetic field of magnetic 202 along with decline for float 20, and magnetosensitive on-off element 102 disconnects and feeds back to external circuit.When the utility model when being the high liquid level warning device, generally be installed on the top of liquid storage container, and send the condition of alerting signal as external circuit with the closure of magnetosensitive on-off element 102, and when as low liquid level alarm device, generally be installed on the bottom of liquid storage container, and send the condition of alerting signal with the disconnection of magnetosensitive on-off element 102 as external circuit.
Certainly, the above-mentioned magnetosensitive on-off element 102 that is based on is the open type on-off element, apparently, also can adopt the closed type on-off element, only need transform slightly the outward appearance circuit and can realize same function.
Preferably, magnetosensitive on-off element 102 selects for use tongue tube to constitute, its have price low, advantage such as low simple, affected by environment is installed.In addition, magnetosensitive on-off element 102 also can select for use Hall switch to constitute.
Common ground is welded in a printed circuit board (PCB) (Printed CircuitBoard with magnetosensitive on-off element 102; PCB) on 103, and be electrically connected with external circuit by signal wire 104.
Adopt the magnetosensitive on-off element to cooperate the flip flop equipment of magnetic as liquid level sensor, utilize variable in distance between the two and obtain liquid level information, than the liquid level sensor that adopts mechanical contact switch, its functional reliability has increased significantly, and magnetosensitive on-off element, magnetic are arranged at the inside of main body rack, float respectively, be subjected to the influence of external environment condition less, make the liquid environment of the utility model applicable to number of different types, guaranteed the serviceable life of liquid level sensor, its functional reliability further is provided.
With reference to shown in Figure 2, both sides, body 200 rear end from float 20 have respectively extended to form a linking arm 201, be formed with hinge hole 203 on the linking arm 201, and the both sides of the hold-down arm 101 of main body rack 10 respectively are formed with a hinged block 105, and hinged block 105 is fit among the hinge hole 203 and realizes the hinged of linking arm 201 and hold-down arm 101.
Preferably, be formed with the support member 106 that extends to hold-down arm 101 rear ends on the mount pad 100, it plays the effect of supporting hold-down arm 101, make between hold-down arm 101 and the mount pad 100 be connected more firm.
Above-mentioned only is preferred embodiment of the present utility model, but not the utility model is done any pro forma restriction, and all equivalent variations or modifications of being done in the claim scope all should fall within the utility model protection domain.
Claims (7)
1, a kind of float-type liquid level sensor includes a main body rack (10) and a float (20), it is characterized in that:
Described main body rack (10) includes a mount pad (100) and and is formed at hold-down arm (101) on the described mount pad (100), and the front end inside of described hold-down arm (101) is provided with a magnetosensitive on-off element (102) that is electrically connected with external circuit;
Described float includes a body (200) and at least one linking arm (201) that extends to form from described body (200) rear end, a magnetic (202) is located to be provided with corresponding to described magnetosensitive on-off element (102) in described body (200) rear end, and described linking arm is articulated in described hold-down arm (101).
2, float-type liquid level sensor as claimed in claim 1 is characterized in that: described magnetosensitive on-off element (102) is a tongue tube.
3, float-type liquid level sensor as claimed in claim 2 is characterized in that: described tongue tube is welded on the printed circuit board (PCB) (103), and is electrically connected by a signal wire (104) and external circuit.
4, float-type liquid level sensor as claimed in claim 1, it is characterized in that: the both sides of the hold-down arm (101) of described main body rack (10) respectively are formed with a hinged block (105), body (200) both sides, rear end of described float (20) respectively extend to form a linking arm (201) with hinge hole (203), and described hinged block (104) is fit among the described hinge hole (203) and realizes the hinged of described linking arm (201) and described hold-down arm (101).
5, float-type liquid level sensor as claimed in claim 4 is characterized in that: be formed with the support member (106) that extends to described hold-down arm (101) rear end on the described mount pad (100).
6, as claim 1 or 2 or 3 or 4 or 5 described float-type liquid level sensors, it is characterized in that: described magnetic (202) is a permanent magnet.
7, float-type liquid level sensor as claimed in claim 6 is characterized in that: described rack body (10) and described float (20) all adopt non-magnetic permeability material preparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201356709U CN201364190Y (en) | 2009-03-20 | 2009-03-20 | Float type liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201356709U CN201364190Y (en) | 2009-03-20 | 2009-03-20 | Float type liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201364190Y true CN201364190Y (en) | 2009-12-16 |
Family
ID=41474858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201356709U Expired - Fee Related CN201364190Y (en) | 2009-03-20 | 2009-03-20 | Float type liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201364190Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852778A (en) * | 2011-07-01 | 2013-01-02 | 大丰市振东空压机有限责任公司 | Oil shortage protector for air compressor |
| CN107110695A (en) * | 2016-11-24 | 2017-08-29 | 深圳市大疆创新科技有限公司 | Liquid level gauge, agricultural plant protection machine and liquid level determination methods |
| CN110785639A (en) * | 2018-09-14 | 2020-02-11 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle's liquid level measurement device, medical kit device, liquid feeding device and unmanned vehicles |
-
2009
- 2009-03-20 CN CNU2009201356709U patent/CN201364190Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852778A (en) * | 2011-07-01 | 2013-01-02 | 大丰市振东空压机有限责任公司 | Oil shortage protector for air compressor |
| CN107110695A (en) * | 2016-11-24 | 2017-08-29 | 深圳市大疆创新科技有限公司 | Liquid level gauge, agricultural plant protection machine and liquid level determination methods |
| WO2018094632A1 (en) * | 2016-11-24 | 2018-05-31 | 深圳市大疆创新科技有限公司 | Level gauge, agricultural plant protection machine and level determination method |
| CN110785639A (en) * | 2018-09-14 | 2020-02-11 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle's liquid level measurement device, medical kit device, liquid feeding device and unmanned vehicles |
| CN110785639B (en) * | 2018-09-14 | 2021-10-15 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle's liquid level measurement device, medical kit device, liquid feeding device and unmanned vehicles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20180320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |