CN202734919U - Capacitance type water level detection device - Google Patents
Capacitance type water level detection device Download PDFInfo
- Publication number
- CN202734919U CN202734919U CN 201220449470 CN201220449470U CN202734919U CN 202734919 U CN202734919 U CN 202734919U CN 201220449470 CN201220449470 CN 201220449470 CN 201220449470 U CN201220449470 U CN 201220449470U CN 202734919 U CN202734919 U CN 202734919U
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- CN
- China
- Prior art keywords
- water level
- stainless steel
- plastic bolt
- canister
- plastic
- 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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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to a water level detection device, in particular to a capacitance type water level detection device and solves the problems that prior liquid level sensors are complicated in structures and high in manufacturing costs. The capacitance type water level detection device comprises a metal container, a water level probe, a power supply, a resistor and a single chip microcomputer, wherein the resistor is connected with the positive pole of the power supply, the water level probe comprises a plastic bolt and a plastic nut, the plastic bolt penetrates through the side wall of the metal container, a central through hole is arranged on the plastic bolt, a stainless steel screw is arranged in the central through hole in a sealing mode, a wiring welding piece is sleeved on the stainless steel screw, the wiring welding piece is in mutual contact with the end surface of the plastic bolt, the end surface of the plastic bolt is located outside the metal container, a stainless steel nut which is used for tightly compressing the wiring welding piece on the plastic bolt is in a threaded connection with the stainless steel screw, the wiring welding piece is respectively connected with the other end of the resistor and the signal input end of the single chip microcomputer through wires, and the negative pole of the power supply is connected with the outer wall of the metal container. The capacitance type water level detection device is simple is structure, low in cost and widely applicable to the field of water level detection.
Description
Technical field
The utility model relates to condensate tank of dehumidifier, is specially a kind of capacitance water level measurer.
Background technology
The liquid level sensor that is used at present measurement liquid height position has many, be divided into two classes by metering system: a class is contact, comprises flange static pressure differential pressure liquid level transmitter, float ball type level transducer, magnetic level transmitter, throw-in type fluid level transmitter, capacitive liquid level transmitter, magnetostrictive liquid level transducer, servo liquid transmitter etc.; Equations of The Second Kind is contactless, is divided into supersonic level sensor, radar level transmitter etc.But above-mentioned liquid level sensor all exists complex structure, problem that cost of manufacture is high.
Summary of the invention
The utility model is in order to solve existing liquid level sensor complex structure, problem that cost of manufacture is high, and a kind of simple in structure, capacitance water level measurer that cost is low is provided.
The utility model is to adopt following technical scheme to realize: capacitance water level measurer comprises canister, water level probe, power supply, the resistance and the single-chip microcomputer that link to each other with the positive pole of power supply; Water level probe comprises the plastic bolt that passes the canister sidewall and is positioned at the plastic nut that canister is outer and be threaded with plastic bolt; Have central through hole on the plastic bolt, sealing is provided with stainless steel screw in the central through hole; Cover has with plastic bolt and is positioned at the wiring weld tabs that the outer end face of canister is in contact with one another on the stainless steel screw, is threaded on the stainless steel screw to be useful on the wiring weld tabs is pressed on stainless steel nut on the plastic bolt; The wiring weld tabs links to each other with the other end of resistance, the signal input part of single-chip microcomputer respectively by wire; The negative pole of power supply links to each other with the outer wall of canister.During use, when the water level of canister did not arrive the water level probe place, because the insulation characterisitic of the plastic bolt of water level probe, circuit did not have conducting, and the voltage that single-chip microcomputer detects the water level probe place is zero; When the water level of canister arrives the water level probe place, because the electric conductivity of water, stainless steel screw, the circuit turn-on that power supply, water, resistance form, this moment, the voltage at water level probe place was that the power and water resistance is to the dividing potential drop of power supply, the single-chip microcomputer that links to each other with wiring weld tabs on being placed in stainless steel screw can detect change in voltage, thereby reaches the purpose that detects the canister water level.
The utility model is simple in structure, cost is low, has solved existing liquid level sensor complex structure, problem that cost of manufacture is high, can be widely used in the water level detecting field.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: the 1-canister; The 2-power supply; 3-resistance; The 4-single-chip microcomputer; The 5-plastic bolt; The 6-plastic nut; The 7-stainless steel screw; 8-wiring weld tabs; 9-stainless steel nut.
Embodiment
Capacitance water level measurer comprises canister 1, water level probe, power supply 2, the resistance 3 and the single-chip microcomputer 4 that link to each other with the positive pole of power supply 2; Water level probe comprises the plastic bolt 5 that passes the canister sidewall and is positioned at outside the canister 1 and the plastic nut 6 that is threaded with plastic bolt 5; Have central through hole on the plastic bolt 5, sealing is provided with stainless steel screw 7 in the central through hole; Cover has with plastic bolt 5 and is positioned at the wiring weld tabs 8 that the outer end face of canister 1 is in contact with one another on the stainless steel screw 7, is threaded on the stainless steel screw 7 to be useful on wiring weld tabs 8 is pressed on stainless steel nut 9 on the plastic bolt 5; Wiring weld tabs 8 links to each other with the other end of resistance 3, the signal input part of single-chip microcomputer 4 respectively by wire; The negative pole of power supply 2 links to each other with the outer wall of canister 1.
During implementation, described plastic bolt 5 adopts the PVC universal standard bolt of M10-M14; Stainless steel screw 7 adopts the stainless steel universal standard screw of M3-M4.Between described plastic bolt 5 and the stainless steel screw 7 for being threaded and being provided with water-proofing agent; Be provided with metallic gasket between the outer wall of described plastic nut 6 and canister 1.Described power acquisition magnitude of voltage is the following power supply of 24v.
Claims (3)
1. capacitance water level measurer is characterized in that: comprise canister (1), water level probe, power supply (2), the resistance (3) and the single-chip microcomputer (4) that link to each other with the positive pole of power supply (2); Water level probe comprises the plastic bolt (5) that passes the canister sidewall and is positioned at the plastic nut (6) that canister (1) is outer and be threaded with plastic bolt (5); Plastic bolt has central through hole on (5), and sealing is provided with stainless steel screw (7) in the central through hole; The upper cover of stainless steel screw (7) has with plastic bolt (5) and is positioned at the wiring weld tabs (8) that the outer end face of canister (1) is in contact with one another, and is threaded on the stainless steel screw (7) to be useful on wiring weld tabs (8) is pressed on stainless steel nut (9) on the plastic bolt (5); Wiring weld tabs (8) links to each other with the other end of resistance (3), the signal input part of single-chip microcomputer (4) respectively by wire; The negative pole of power supply (2) links to each other with the outer wall of canister (1).
2. capacitance water level measurer according to claim 1 is characterized in that: the PVC universal standard bolt of described plastic bolt (5) employing M10-M14; Stainless steel screw (7) adopts the stainless steel universal standard screw of M3-M4.
3. capacitance water level measurer according to claim 1 and 2 is characterized in that: between described plastic bolt (5) and the stainless steel screw (7) for being threaded and being provided with water-proofing agent; Be provided with metallic gasket between the outer wall of described plastic nut (6) and canister (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220449470 CN202734919U (en) | 2012-09-06 | 2012-09-06 | Capacitance type water level detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220449470 CN202734919U (en) | 2012-09-06 | 2012-09-06 | Capacitance type water level detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202734919U true CN202734919U (en) | 2013-02-13 |
Family
ID=47660608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220449470 Expired - Fee Related CN202734919U (en) | 2012-09-06 | 2012-09-06 | Capacitance type water level detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202734919U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104957974A (en) * | 2015-06-26 | 2015-10-07 | 宁波金凌厨房设备有限公司 | Interconnected and intercommunicated intelligent steam box |
| CN106125780A (en) * | 2016-08-17 | 2016-11-16 | 苏州沃达园林机械有限公司 | The built-in electric apparatus for controlling water level of immersible pump |
| CN106592188A (en) * | 2016-12-30 | 2017-04-26 | 东保集团有限公司 | Steam ironing device and evaporator thereof |
| CN109642884A (en) * | 2016-08-29 | 2019-04-16 | 三菱电机株式会社 | Electrosatatic capacity detector and power conversion device |
-
2012
- 2012-09-06 CN CN 201220449470 patent/CN202734919U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104957974A (en) * | 2015-06-26 | 2015-10-07 | 宁波金凌厨房设备有限公司 | Interconnected and intercommunicated intelligent steam box |
| CN106125780A (en) * | 2016-08-17 | 2016-11-16 | 苏州沃达园林机械有限公司 | The built-in electric apparatus for controlling water level of immersible pump |
| CN109642884A (en) * | 2016-08-29 | 2019-04-16 | 三菱电机株式会社 | Electrosatatic capacity detector and power conversion device |
| CN109642884B (en) * | 2016-08-29 | 2021-05-28 | 三菱电机株式会社 | Capacitance detection device and power conversion device |
| CN106592188A (en) * | 2016-12-30 | 2017-04-26 | 东保集团有限公司 | Steam ironing device and evaporator thereof |
| CN106592188B (en) * | 2016-12-30 | 2019-11-15 | 东保集团有限公司 | Steam ironing apparatus and its evaporator |
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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: 20130213 Termination date: 20180906 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |