CN201655670U - Liquid level switch - Google Patents
Liquid level switch Download PDFInfo
- Publication number
- CN201655670U CN201655670U CN201020175373XU CN201020175373U CN201655670U CN 201655670 U CN201655670 U CN 201655670U CN 201020175373X U CN201020175373X U CN 201020175373XU CN 201020175373 U CN201020175373 U CN 201020175373U CN 201655670 U CN201655670 U CN 201655670U
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- Prior art keywords
- switch
- liquid
- float
- housing
- liquid level
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- Switches Operated By Changes In Physical Conditions (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The utility model relates to a liquid level switch for monitoring liquid level height of acid-alkali liquid medicine in PCB industry, which comprises a floater, an electrode, two wires and a shell, wherein the floater is arranged on the lower portion in the shell, one end of the floater is connected with the electrode, one end of the two wires of an open circuit are respectively connected on two contacts in the shell, and the other ends stretch out from the upper portion of the shell, thereby forming the liquid level switch. Floater components up and down float when the height of the liquid level of the liquid medicine changes, when the floater components downward move, when the distance of an inductive switch trigger device and an inductive electric switch exceeds a certain distance, the inductive electric switch is cut off, a water pump can stop working or can not be started to work, thereby playing the role of protecting the water pump. Upper and lower shells and floater component shells which are made from acid-alkali resistance materials monitor the liquid level of the acid-alkali liquid medicine and also can prevent the liquid level switch from being corroded by acid-alkali, and can meet the making demands of PCB boards.
Description
Technical field:
The utility model relates to a kind of liquid-level switch that utilizes liquid level height control circuit to open, turn-off, particularly a kind of liquid-level switch that is used for PCB industry monitoring soda acid liquid medicine liquid level.
Background technology:
Pcb board when the liquid level of soda acid liquid medicine is lower than the water pump water inlet, water pump not fullcharging or no-load running will occurs, thereby can cause damaging water pump in the manufacture craft flow process, and can have a strong impact on pcb board do the plate effect.Prior art is normally made the normal operation that height that transparent observation window comes visual monitoring liquid medicine liquid level guarantees water pump; If adopt the liquid-level switch control mode, because can producing corrosion to some control of material switches, liquid medicine cause it to lose efficacy, can not satisfy the requirement that pcb board is made.
Summary of the invention:
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and a kind of liquid-level switch of providing, the particularly a kind of PCB of being used for industry monitoring soda acid liquid medicine liquid-level switch liquid level, that can prevent acid and alkali corrosion.
For realizing above-mentioned purpose of the present utility model, the utility model mainly by the following technical solutions:
A kind of liquid-level switch of the present utility model, form by float, electrode, two leads and housing, float is placed in the bottom in the housing, float one termination has electrode, two lead one ends of open circuit are connected electrically in respectively on interior two contacts of housing, the other end is stretched out by housing top, forms liquid-level switch.Described liquid-level switch is made up of float assembly, induced electricity switch, two leads and housing, float assembly freely is placed in the space of lower housing portion, one end of two leads is connected electrically in respectively on two normally opened contacts of induced electricity switch, the other end is stretched out by housing top, housing upper and lower two is partly coaxial and fixedly connected, airtight each other isolated opening.
Described float assembly is provided with cylinder shell, inductive switch trigger device and float end cap, the fixedly connected respectively two ends that are enclosed in the cylinder shell of inductive switch trigger device and float end cap, and float assembly is that hollow is airtight.
Described housing top is made up of locking rope mouth, attaching nut, tube connector, centring ring, induced electricity switch and lead, the attaching nut is fixedly connected on an end of tube connector, locking rope mouth is connected with attaching nut's bolt, centring ring is fixedly connected on the other end of tube connector with the induced electricity switch, is connected electrically in lead on two normally opened contacts of induced electricity switch and passes tube connector and draw from locking rope mouth.
Described lower housing portion is the tubular shell with holes that one one end is provided with end cap, and float assembly freely is placed in the tubular shell, and the lower housing portion other end is fixedly connected on the tube connector on housing top.
A kind of liquid-level switch of the present utility model; height change in the liquid medicine liquid level; make float assembly fluctuate; when float assembly moves down, when the distance of inductive switch trigger device and induced electricity switch exceeds certain distance; the induced electricity switch cut-offs; water pump will quit work or water pump fail to start work so, thereby plays a part the protection water pump.The upper and lower casing, the float assembly housing that adopt the acid and alkali-resistance material to manufacture have been realized not only can monitoring soda acid liquid medicine liquid level, but also can have been prevented from the liquid-level switch of acid and alkali corrosion from can satisfy the requirement that pcb board is made.
Description of drawings:
Fig. 1 is the structural representation of liquid-level switch of the present utility model.
Fig. 2 is the float assembly cutaway view of liquid-level switch of the present utility model.
Embodiment:
For setting forth thought of the present utility model and purpose, the utility model is described further below in conjunction with the drawings and specific embodiments.
See also Fig. 1, shown in Figure 2, a kind of liquid-level switch of the present utility model, form by float, electrode, two leads and housing, float is placed in the bottom in the housing, float one termination has electrode, two lead one ends of open circuit are connected electrically in respectively on interior two contacts of housing, and the other end is stretched out by housing top, forms liquid-level switch.
Liquid-level switch is made up of float assembly 7, induced electricity switch 5, two leads 3 and housing, float assembly 7 freely is placed in the space of lower housing portion 8, one end of two leads 3 is connected electrically in respectively on two normally opened contacts of induced electricity switch 5, the other end is stretched out by housing top, housing upper and lower two is partly coaxial and fixedly connected, airtight each other isolated opening.
Housing top is made up of locking rope mouth 1, attaching nut 2, tube connector 4, centring ring 6, induced electricity switch 5 and lead 3, attaching nut 2 is fixedly connected on an end of tube connector 4, locking rope mouth 1 is connected with attaching nut's 2 bolts, centring ring 6 is fixedly connected on the other end of tube connector 4 with induced electricity switch 5, is connected electrically in lead 3 on two normally opened contacts of induced electricity switch 5 and passes tube connector 4 and draw from locking rope mouth 1.Lower housing portion is the tubular shell with holes 8 that one one end is provided with end cap 9, and float assembly 7 freely is placed in the tubular shell 8, and the lower housing portion other end is fixedly connected on the tube connector 4 on housing top.
A kind of liquid-level switch of the present utility model, provide a kind of level sensor device of anti-soda acid, be mainly used in existing water pump not fullcharging or the no-load running problem of solving, these locking rope mouth 1 one ends by screw-threaded coupling on attaching nut 2, the other end is then locked lead 3, here attaching nut 2 with an end hot melt of intermediate connection tube 4 together, the other end endoporus of intermediate connection tube 4 then fixes induced electricity switch 5 with centring ring 6, this end cylindrical place of this intermediate connection tube 4 with an end hot melt of shell 8 together, the other end of shell 8 is fixed together with shell end cap 9.
Be illustrated in figure 2 as float assembly cutaway view of the present utility model, this inductive switch trigger device 10 is bumped on an end of float cylinder shell 11 endoporus, the other end of this float cylinder shell 11 can guarantee its sealing with float end cap 12 hot melts together like this.
The operation principle of a kind of liquid-level switch of the present utility model is: pcb board is in the manufacture craft flow process; to guarantee that at first water pump normally moves; the essential distance of inductive switch trigger device 10 and induced electricity switch 5 that guarantees of liquid medicine liquid level is in effective range; when the liquid medicine liquid level is lower than the water pump water inlet; float assembly 7 exceeds induced electricity switch 5 actual induction scopes along with liquid level moves down; respond to cut-off signal so and adopt the PLC program control; corresponding water pump quits work or water pump fail to start work; water pump not fullcharging or no-load running can not occur, thereby reach the effect of protection water pump.
More than a kind of liquid-level switch provided by the utility model is described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, part in specific embodiments and applications all can change.In sum, this description should not be construed as restriction of the present utility model.
Claims (4)
1. liquid-level switch, by float, electrode, two leads and housing are formed, float is placed in the bottom in the housing, float one termination has electrode, two lead one ends of open circuit are connected electrically in respectively on interior two contacts of housing, the other end is stretched out by housing top, form liquid-level switch, it is characterized in that: described liquid-level switch is by float assembly, the induced electricity switch, two leads and housing are formed, float assembly freely is placed in the space of lower housing portion, one end of two leads is connected electrically in respectively on two normally opened contacts of induced electricity switch, the other end is stretched out by housing top, on the housing, two is partly coaxial and fixedly connected down, airtight each other isolated opening.
2. a kind of liquid-level switch according to claim 1, it is characterized in that: described float assembly is provided with cylinder shell, inductive switch trigger device and float end cap, the fixedly connected respectively two ends that are enclosed in the cylinder shell of inductive switch trigger device and float end cap, float assembly is that hollow is airtight.
3. a kind of liquid-level switch according to claim 1, it is characterized in that: described housing top is made up of locking rope mouth, attaching nut, tube connector, centring ring, induced electricity switch and lead, the attaching nut is fixedly connected on an end of tube connector, locking rope mouth is connected with attaching nut's bolt, centring ring is fixedly connected on the other end of tube connector with the induced electricity switch, is connected electrically in lead on two normally opened contacts of induced electricity switch and passes tube connector and draw from locking rope mouth.
4. a kind of liquid-level switch according to claim 1, it is characterized in that: described lower housing portion is the tubular shell with holes that one one end is provided with end cap, float assembly freely is placed in the tubular shell, and the lower housing portion other end is fixedly connected on the tube connector on housing top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020175373XU CN201655670U (en) | 2010-04-23 | 2010-04-23 | Liquid level switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020175373XU CN201655670U (en) | 2010-04-23 | 2010-04-23 | Liquid level switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201655670U true CN201655670U (en) | 2010-11-24 |
Family
ID=43120914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020175373XU Expired - Lifetime CN201655670U (en) | 2010-04-23 | 2010-04-23 | Liquid level switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201655670U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305822A (en) * | 2016-04-22 | 2017-10-31 | 扬中市宏彬冷暖设备有限公司 | A kind of main frame water tank |
| CN107799354A (en) * | 2017-10-26 | 2018-03-13 | 防城港市奥氏蓝科技有限公司 | A kind of hydraulic pressure triggers electric switchgear automatically |
-
2010
- 2010-04-23 CN CN201020175373XU patent/CN201655670U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305822A (en) * | 2016-04-22 | 2017-10-31 | 扬中市宏彬冷暖设备有限公司 | A kind of main frame water tank |
| CN107799354A (en) * | 2017-10-26 | 2018-03-13 | 防城港市奥氏蓝科技有限公司 | A kind of hydraulic pressure triggers electric switchgear automatically |
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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: 20101124 |
|
| CX01 | Expiry of patent term |