CN201222722Y - Contactless switch for liquid level control - Google Patents
Contactless switch for liquid level control Download PDFInfo
- Publication number
- CN201222722Y CN201222722Y CNU2008200230747U CN200820023074U CN201222722Y CN 201222722 Y CN201222722 Y CN 201222722Y CN U2008200230747 U CNU2008200230747 U CN U2008200230747U CN 200820023074 U CN200820023074 U CN 200820023074U CN 201222722 Y CN201222722 Y CN 201222722Y
- Authority
- CN
- China
- Prior art keywords
- switch
- liquid level
- contact switch
- level control
- induction part
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
一种用于液位控制的无触点开关，属于电子技术应用技术领域。在浮球液位计上设置一个感应部件，在感应部件下面安装一块小磁铁，感应部件与小磁铁密封固定连接；无触点开关除浮球外的部分安装在一个耐腐蚀、不导磁的壳体内。所述的感应部件是一个PNP接近开关。本实用新型具有以下优点：1.可靠：这种无触点开关相对于原先的机械行程开关，无论是灵敏度，使用寿命都有很大程度的提高；2.节约资金：除感应开关为新的外，其余部件为从旧仪表上拆用的，且感应开关的价格也只有百元左右；3.安全：工作现场较为潮湿，用低压直流电替代220伏交流电，更为安全。
A non-contact switch used for liquid level control belongs to the technical field of electronic technology application. Set an induction part on the float level gauge, install a small magnet under the induction part, and the induction part is sealed and fixedly connected with the small magnet; the non-contact switch is installed in a corrosion-resistant, non-magnetic inside the shell. The sensing component is a PNP proximity switch. The utility model has the following advantages: 1. Reliable: Compared with the original mechanical travel switch, this kind of non-contact switch has greatly improved sensitivity and service life; In addition, the rest of the components are dismantled from the old instrument, and the price of the sensor switch is only about 100 yuan; 3. Safety: the work site is relatively humid, and it is safer to use low-voltage direct current instead of 220 volt alternating current.
Description
Technical field
The utility model relates to a kind of noncontacting switch that is used for liquid level control, belongs to the application of electronic technology technical field.
Background technology
What the liquid level of diluent facilities was controlled usefulness at present is UQK-2 type floating ball lever meter, and this floating ball lever meter often breaks down, and sensitivity does not reach requirement.This equipment has a kind of substitute products at present, i.e. tuning fork switch, performance is more stable, but price is too high, one greatly about about 8000 yuans, be unfavorable for the reduction of production cost.
Summary of the invention
At the defective of prior art, the utility model provide a kind of reasonable in design, simple in structure, easy to manufacture, can adapt to frequent movement, highly sensitive, cost is low is used for the noncontacting switch of liquid level control.
A kind of noncontacting switch that is used for liquid level control is provided with an inductive means on floating ball lever meter, a small magnet is installed below inductive means, and inductive means and small magnet are sealedly and fixedly connected; The part of noncontacting switch except that ball float is installed in corrosion-resistant, the non-magnetic housing.
Described inductive means is that a PNP is near switch.
This switch is a low-voltage DC supply, voltage 10 to 30 volts all can, have metal to sense after, its output has direct current voltage output, owing to be similar to common contact switch control, also claims noncontacting switch.
During use, raw water pump is running in a single day, its auxiliary contact K closure, and transformer B is elementary to be got, the control liquid level gauge promptly comes into operation, if this moment, liquid level was on the low side, then ball float drive induction rod G senses near switch A, output to electromagnetically operated valve DF near switch, electromagnetically operated valve is opened, and begins water inlet; Along with water level rises, ball float is also along with floating, when liquid level reaches in limited time, the ball float mechanism action, induction rod induction is less than near switch, near the switch no-output, closed electromagnetic valve, because this moment, the water in this equipment is constantly extracted out to be used, after closing water intaking valve, water level will constantly descend, in case after dropping to lower limit, ball float drives induction rod again and senses near switch, so move in circles, reach the purpose of liquid level control.Need explanation any be that the induction rod front end is magnetic, the magnet bonding with the outside interacts, and can guarantee that sensed position at upper and lower bound 2 points, eliminated misoperation, has played the quantitatively effect of control of liquid level.
The utlity model has following advantage:
1, reliable: no matter this noncontacting switch is sensitivity with respect to original mechanical trip switch, and all have significant improvement useful life.
2, economize on the use of funds: except that inductive switch be new, remaining part is for disassembling and using from old instrument, and the price of inductive switch also has only about hundred yuan.
3, safety: the working site is comparatively moist, and is with the electricity substituted 220 volts of alternating currents of low-voltage direct, safer.
Description of drawings
Fig. 1 is near the front view of switch in the utility model.
Fig. 2 is near the vertical view of switch in the utility model.
Fig. 3 is near the control circuit figure of switch in the utility model.
Wherein, A be PNP near switch, B is a transformer, C is a magnet, D is the earial drainage diode, K is the auxiliary contact of intake pump, F is a ball float, G is an induction rod, Z is a rectifier bridge, DF is the electromagnetically operated valve of control water inlet.
Embodiment
Embodiment:
A kind of noncontacting switch that is used for liquid level control is provided with an inductive means on floating ball lever meter, a small magnet is installed below inductive means, and inductive means and small magnet are sealedly and fixedly connected; The part of noncontacting switch except that ball float is installed in corrosion-resistant, the non-magnetic housing.
Described inductive means is that a PNP is near switch.
This switch is a low-voltage DC supply, voltage 10 to 30 volts all can, have metal to sense after, its output has direct current voltage output, owing to be similar to common contact switch control, also claims noncontacting switch.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200230747U CN201222722Y (en) | 2008-06-02 | 2008-06-02 | Contactless switch for liquid level control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200230747U CN201222722Y (en) | 2008-06-02 | 2008-06-02 | Contactless switch for liquid level control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201222722Y true CN201222722Y (en) | 2009-04-15 |
Family
ID=40576224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200230747U Expired - Fee Related CN201222722Y (en) | 2008-06-02 | 2008-06-02 | Contactless switch for liquid level control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201222722Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014032547A1 (en) * | 2012-08-30 | 2014-03-06 | Emerson Machinery Equipment (Shenzhen) Co., Ltd | Liquid level detectors |
| CN111781963A (en) * | 2020-07-09 | 2020-10-16 | 湖南康飞建设工程有限公司 | Water conservancy monitored control system based on internet |
-
2008
- 2008-06-02 CN CNU2008200230747U patent/CN201222722Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014032547A1 (en) * | 2012-08-30 | 2014-03-06 | Emerson Machinery Equipment (Shenzhen) Co., Ltd | Liquid level detectors |
| CN111781963A (en) * | 2020-07-09 | 2020-10-16 | 湖南康飞建设工程有限公司 | Water conservancy monitored control system based on internet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090415 |