CN203414140U - Pure water box liquid level sensor - Google Patents
Pure water box liquid level sensor Download PDFInfo
- Publication number
- CN203414140U CN203414140U CN201320568962.8U CN201320568962U CN203414140U CN 203414140 U CN203414140 U CN 203414140U CN 201320568962 U CN201320568962 U CN 201320568962U CN 203414140 U CN203414140 U CN 203414140U
- Authority
- CN
- China
- Prior art keywords
- liquid level
- ball float
- level induction
- inductive switch
- circuit board
- 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 - Lifetime
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- Level Indicators Using A Float (AREA)
Abstract
The utility model relates to a pure water box liquid level sensor comprising a sensor outer casing (4), a quick patchcord (1), a circuit board (8), a high liquid level induction floating ball (3), a middle liquid level induction floating ball (7) and a low liquid level induction floating ball (10), wherein the sensor outer casing (4) has a hollow structure; the quick patchcord (1) is installed at the top of the sensor outer casing (4); the circuit board (8) is installed in the sensor outer casing (4); the high liquid level induction floating ball (3), the middle liquid level induction floating ball (7) and the low liquid level induction floating ball (10) are arranged at the outer side of the sensor outer casing (4) from top to bottom disposably; a high liquid level induction switch (2), a middle liquid level induction switch (5) and a low liquid level induction switch (9) are sequentially installed on the circuit board (8). The pure water box liquid level sensor is simple in structure, low in manufacture cost and long in service life.
Description
Technical field
The utility model relates to a kind of sensor, particularly pure water tank liquid level sensor.
Background technology
Liquid level sensor is for detection of in container, particularly the electron device of the liquid level in closed container.Traditional floating ball type liquid level sensor is comprised of wire, conduit, joint, magnet steel, ball float and tongue tube, ball float is sleeved on conduit, on conduit, connect a plurality of tongue tubes, ball float and tongue tube form loop, along with the difference of liquid level, the differing heights of ball float in conduit, ball float and the tongue tube in conduit differing heights, form different electric signal, thereby demonstrate different liquid levels.But ball float only has while coordinating with tongue tube, could form circuit loop, so a plurality of tongue tubes need to be installed on conduit, need the liquid level of measurement more accurate, required tongue tube quantity is more, and cost is also just higher; If one of them tongue tube breaks down, will cause whole sensor to use.
Utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, and the pure water tank liquid level sensor of a kind of simple in structure, low cost of manufacture, signal stabilization and long service life is provided.
The purpose of this utility model is achieved through the following technical solutions: pure water tank liquid level sensor, it comprises sensor outer housing, fast grafting the end of a thread, circuit board, high liquid level induction ball float, middle liquid level induction ball float and low liquid level induction ball float, sensor outer housing is hollow structure, the top of sensor outer housing is provided with fast grafting the end of a thread, sensor outer housing inside is provided with circuit board, the outside of sensor outer housing is once provided with high liquid level induction ball float from top to bottom, middle liquid level induction ball float and low liquid level induction ball float, high liquid level inductive switch is installed on circuit board successively, middle liquid level inductive switch and low liquid level inductive switch, described high liquid level inductive switch is positioned at high liquid level induction ball float top, described middle liquid level inductive switch is between high liquid level induction ball float and middle liquid level induction ball float, described low liquid level inductive switch is between middle liquid level induction ball float and low liquid level induction ball float, on the sensor outer housing in high liquid level inductive switch, middle liquid level inductive switch and low liquid level inductive switch outside, be respectively arranged with spacing back-up ring.
On the outside surface of described circuit board, be coated with circuit board protective sleeve.
The utlity model has following advantage:
1, the utility model arranges a plurality of ball floats on shell, to different liquid levels, all can monitor, and has replaced the tongue tube on traditional sensors, and it is simple in structure, low cost of manufacture, and signal is more stable.
2, circuit board protective sleeve is set on circuit board, can effectively prevents that circuit board from damaging because of water inlet, increase substantially its serviceable life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: the 1-the end of a thread of pegging graft soon, the high liquid level inductive switch of 2-, the high liquid level induction of 3-ball float, 4-sensor outer housing; liquid level inductive switch in 5-, 6-circuit board protective sleeve, liquid level induction ball float in 7-; 8-circuit board, the low liquid level inductive switch of 9-, the low liquid level induction of 10-ball float.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but protection domain of the present utility model is not limited to the following stated.
As shown in Figure 1, pure water tank liquid level sensor, it comprises sensor outer housing 4, fast grafting the end of a thread 1, circuit board 8, high liquid level induction ball float 3, middle liquid level induction ball float 7 and low liquid level induction ball float 10, sensor outer housing 4 is hollow structure, the top of sensor outer housing 4 is provided with fast grafting the end of a thread 1, sensor outer housing 4 inside are provided with circuit board 8, on the outside surface of circuit board 8, be coated with circuit board protective sleeve 6, the outside of sensor outer housing 4 is once provided with high liquid level induction ball float 3 from top to bottom, middle liquid level induction ball float 7 and low liquid level induction ball float 10, high liquid level inductive switch 2 is installed on circuit board 8 successively, middle liquid level inductive switch 5 and low liquid level inductive switch 9, described high liquid level inductive switch 2 is positioned at high liquid level induction ball float 3 tops, described middle liquid level inductive switch 5 is between high liquid level induction ball float 3 and middle liquid level induction ball float 7, described low liquid level inductive switch 9 is between middle liquid level induction ball float 7 and low liquid level induction ball float 10, on the sensor outer housing 4 in high liquid level inductive switch 2, middle liquid level inductive switch 5 and low liquid level inductive switch 9 outsides, be respectively arranged with spacing back-up ring 11.
Water in pure water tank is during for full liquid level, and high liquid level induction ball float 3, middle liquid level induction ball float 7 and low liquid level induction ball float 10 are all in floating state, and now the resistance value on circuit board 8 is minimum, and electric current is maximum.Along with the decline of liquid level, high liquid level induction ball float 3 declines, and high liquid level inductive switch 2 is opened, and the resistance value on circuit board 8 increases, current decay; Liquid level continues to decline, and middle liquid level induction ball float 7 declines, and middle liquid level inductive switch 5 is opened, and resistance further increases, and electric current further weakens; When low liquid level induction ball float 10 also declines, low liquid level inductive switch 9 is opened, and resistance is got to maximal value, and electric current is minimum value.By the formed signal designation of electric current, go out different liquid levels.
Claims (2)
1. pure water tank liquid level sensor, it is characterized in that: it comprises sensor outer housing (4), fast grafting the end of a thread (1), circuit board (8), high liquid level induction ball float (3), middle liquid level induction ball float (7) and low liquid level induction ball float (10), sensor outer housing (4) is hollow structure, the top of sensor outer housing (4) is provided with fast grafting the end of a thread (1), sensor outer housing (4) inside is provided with circuit board (8), the outside of sensor outer housing (4) is once provided with high liquid level induction ball float (3) from top to bottom, middle liquid level induction ball float (7) and low liquid level induction ball float (10), high liquid level inductive switch (2) is installed on circuit board (8) successively, middle liquid level inductive switch (5) and low liquid level inductive switch (9), described high liquid level inductive switch (2) is positioned at high liquid level induction ball float (3) top, described middle liquid level inductive switch (5) is arranged between high liquid level induction ball float (3) and liquid level induction ball float (7), described low liquid level inductive switch (9) is arranged between liquid level induction ball float (7) and low liquid level induction ball float (10), on the sensor outer housing (4) in high liquid level inductive switch (2), middle liquid level inductive switch (5) and low liquid level inductive switch (9) outside, be respectively arranged with spacing back-up ring (11).
2. pure water tank liquid level sensor according to claim 1, is characterized in that: on the outside surface of described circuit board (8), be coated with circuit board protective sleeve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320568962.8U CN203414140U (en) | 2013-09-13 | 2013-09-13 | Pure water box liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320568962.8U CN203414140U (en) | 2013-09-13 | 2013-09-13 | Pure water box liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203414140U true CN203414140U (en) | 2014-01-29 |
Family
ID=49977023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320568962.8U Expired - Lifetime CN203414140U (en) | 2013-09-13 | 2013-09-13 | Pure water box liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203414140U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109062271A (en) * | 2018-08-21 | 2018-12-21 | 浙江和利氢能科技股份有限公司 | A kind of cell liquid level controlling system and method |
| CN112697235A (en) * | 2020-12-09 | 2021-04-23 | 深圳市奥图威尔科技有限公司 | Adjustable multi-liquid level floating ball sensor |
-
2013
- 2013-09-13 CN CN201320568962.8U patent/CN203414140U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109062271A (en) * | 2018-08-21 | 2018-12-21 | 浙江和利氢能科技股份有限公司 | A kind of cell liquid level controlling system and method |
| CN112697235A (en) * | 2020-12-09 | 2021-04-23 | 深圳市奥图威尔科技有限公司 | Adjustable multi-liquid level floating ball sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140129 |
|
| CX01 | Expiry of patent term |