CN104460719A - Liquid level switch with hysteresis function - Google Patents
Liquid level switch with hysteresis function Download PDFInfo
- Publication number
- CN104460719A CN104460719A CN201410719024.2A CN201410719024A CN104460719A CN 104460719 A CN104460719 A CN 104460719A CN 201410719024 A CN201410719024 A CN 201410719024A CN 104460719 A CN104460719 A CN 104460719A
- Authority
- CN
- China
- Prior art keywords
- tongue tube
- blank pipe
- normally closed
- control circuit
- pipe pillar
- 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.)
- Pending
Links
Landscapes
- Level Indicators Using A Float (AREA)
Abstract
The invention discloses a liquid level switch with a hysteresis function. The liquid level switch comprises a mechanical device and a hysteresis control circuit. The mechanical device comprises a blank pipe strut, a threaded cover is arranged at the upper end of the blank pipe strut, and a sealing cover is arranged at the lower end of the blank pipe strut; the blank pipe strut is fixed at the upper end of a container through the threaded cover; a normally-closed reed pipe and a normally-open reed pipe are arranged in the blank pipe strut; a clamp spring is arranged on the surface of the blank pipe strut; the blank pipe strut is sleeved with a floater, and magnetic steel is arranged in the floater; when the floater moves, combination of the magnetic steel and the normally-closed reed pipe or the normally-open reed pipe is used as input signals of the hysteresis control circuit, a hysteresis region is formed between the normally-closed reed pipe and the normally-open reed pipe, and the hysteresis effect is achieved in water injection and drainage or liquid level indication of the container. The liquid level switch does not frequently change actions along with shaking of liquid within a certain range, and safe working voltage is adopted.
Description
Technical field
The present invention relates to liquid level sensor field, refer in particular to and a kind ofly do not rock within the specific limits with liquid and frequently change a kind of level switch with lag function of action.
Background technology
Level switch, for realizing the detection of liquid level, is applied very extensive, as the level sensing in liquid level detection, automobile in disposal system water tank of purifying waste water in the fields such as water treatment, household electrical appliance, automobile; Existing level switch, general uses a switching signal for detecting the height of liquid level, rocks due to liquid level in actual application the shake causing liquid level signal to output signal; As the action using existing level switch to control water pump, in the process of liquid feeding, the injection of water can cause rocking of liquid level to make the action of pumping frequency numerous execution Push And Release, shortens the life-span of switch and pump, and forms certain interference to electrical network; As the height using existing level switch to indicate liquid level, because rocking of liquid in container can cause the signal designation of this liquid level to cut in and out, liquid level is indicated indefinite.When using civil power to work as used existing level switch, when level switch shell is damaged, have and cause the charged hidden danger of liquid in container, for this reason, we have developed and a kind ofly not to rock within the specific limits with liquid and frequently change action, a kind of level switch with lag function of use safety operating voltage.
Summary of the invention
The present invention seeks to provide a kind of and do not rock within the specific limits with liquid to overcome the deficiencies in the prior art and frequently change a kind of level switch with lag function of action.
For achieving the above object, the technical solution used in the present invention is: a kind of level switch with lag function, comprises mechanical hook-up and hysteresis control circuit; Described mechanical hook-up comprises blank pipe pillar; The upper end of described blank pipe pillar is provided with threaded cap, and lower end is provided with gland bonnet; Described blank pipe pillar is fixed on the upper end of container by threaded cap; Normally closed tongue tube and Chang Kai tongue tube is provided with in described blank pipe pillar; The surface of described blank pipe pillar is provided with jump ring; Described blank pipe pillar is arranged with float, in described float, is provided with magnet steel; Described float when moving by magnet steel and normally closed tongue tube or the input signal being combined as hysteresis control circuit often opening tongue tube, the centre of described normally closed tongue tube and Chang Kai tongue tube is hysteresis zone, realizes hysteresis when container water filling and draining or liquid level indicate.
Preferably, described hysteresis control circuit comprises one-way SCR V1, diode V2, resistance R1, electric capacity C1, C2 and C3, relay K 1, input signal connection terminal J2, the sub-J1 of power supply constrained input signal terminal; Hysteresis control circuit is accessed respectively by wire in the two ends of described normally closed tongue tube and Chang Kai tongue tube; Described normally closed tongue tube is the S2 in hysteresis control circuit, and described tongue tube of often opening is S1 in hysteresis control circuit; Described float is mobile when normally closed tongue tube on blank pipe pillar, and the switch S 2 in normally closed tongue tube can disconnect; Described float is in time often opening tongue tube, and the switch S 1 often held in tongue tube can close; Described normally closed tongue tube or the disconnection of often driving switch in tongue tube and the closed input signal as hysteresis control circuit, described hysteresis control circuit controls the conducting of one-way SCR V1 by the input signal of normally closed tongue tube and Chang Kai tongue tube, thus the action of pilot relay K1, finally realize hysteresis when container water filling and draining or liquid level indicate.
Preferably, the junction, upper end of described threaded cap and container is also provided with the first O-ring seal, and described first O-ring seal is used for the sealing at blank pipe pillar upper end and container joint place; The junction, lower end of described gland bonnet and blank pipe pillar is also provided with the second O-ring seal, and described second O-ring seal is used for preventing liquid in container from infiltrating in blank pipe pillar.
Preferably, described normally closed tongue tube and Chang Kai tongue tube are between the upper and lower every placement, and normally closed tongue tube is arranged on the top of often opening tongue tube.
Preferably, described jump ring is arranged on the top of normally closed tongue tube, the below of threaded cap.
Preferably, described float is arranged on the below of jump ring, the top of gland bonnet, and described float can move up and down on blank pipe pillar.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
The level switch of band lag function of the present invention is when liquid level changes in hysteresis zone, hysteresis control circuit repeat circuit hold mode is constant, when only having liquid level not in hysteresis zone, hysteresis control circuit repeat circuit state just can change, effectively can extend the life-span of water level switch output contact, effectively can extend the life-span of output control unit equipment, more stably can indicate liquid level position.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Accompanying drawing 1 is the structural representation of the level switch of band lag function of the present invention;
Accompanying drawing 2 is the sluggish trigging control plate circuit diagram of the level switch of band lag function of the present invention;
Accompanying drawing 3 is the working state schematic representation of the level switch of band lag function of the present invention;
Wherein: 1, threaded cap; 2, blank pipe pillar; 3, the first O-ring seal; 4, jump ring; 5, float; 6, magnet steel; 7, the second O-ring seal; 8, gland bonnet; 9, normally closed tongue tube; 10, often tongue tube is opened; 11, container; 12, hysteresis control circuit; 13, power supply.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
Accompanying drawing 1-3 is the level switch of band lag function of the present invention, comprises mechanical hook-up and hysteresis control circuit 12; Described mechanical hook-up comprises blank pipe pillar 2; The upper end of described blank pipe pillar 2 is provided with threaded cap 1, and lower end is provided with gland bonnet 8; Described blank pipe pillar 2 is fixed on the upper end of container 11 by threaded cap 1; Described threaded cap 1 is also provided with the first O-ring seal 3 with the junction, upper end of container 11, and described first O-ring seal 3 is for the sealing at blank pipe pillar 2 upper end and container joint place; Described gland bonnet 8 is also provided with the second O-ring seal 7 with the junction, lower end of blank pipe pillar 2, and described second O-ring seal 7 infiltrates in blank pipe pillar 2 for preventing liquid in container 11; Be provided with normally closed tongue tube 9 and Chang Kai tongue tube 10 in described blank pipe pillar 2, described normally closed tongue tube 9 and Chang Kai tongue tube 10 are between the upper and lower every placement, and normally closed tongue tube 9 is arranged on the top of often opening tongue tube 10; The surface of described blank pipe pillar 2 is provided with jump ring 4, and described jump ring 4 is arranged on the top of normally closed tongue tube 9, the below of threaded cap 1; Described blank pipe pillar 2 is arranged with float 5, and be provided with magnet steel 6 in described float 5, described float 5 is arranged on the below of jump ring 4, the top of gland bonnet 8, and described float 5 can move up and down on blank pipe pillar 2; Described hysteresis control circuit 12 comprises one-way SCR V1, diode V2, resistance R1, electric capacity C1, C2 and C3, relay K 1, input signal connection terminal J2, the sub-J1 of power supply constrained input signal terminal; The two ends of described normally closed tongue tube 9 and Chang Kai tongue tube 10 are respectively by wire access hysteresis control circuit 12; Described normally closed tongue tube 9 is the S2 in hysteresis control circuit 12, and described tongue tube 10 of often opening is S1 in hysteresis control circuit 12; Described float 5 is mobile when normally closed tongue tube 9 on blank pipe pillar 2, and the switch S 2 in normally closed tongue tube 9 can disconnect; Described float 5 is in time often opening tongue tube 10, and the switch S 1 often held in tongue tube 10 can close; Described normally closed tongue tube 9 or the disconnection of often driving switch in tongue tube 10 and the closed input signal as hysteresis control circuit 12, described hysteresis control circuit 12 controls the conducting of one-way SCR V1 by the input signal of normally closed tongue tube 9 and Chang Kai tongue tube 10, thus the action of pilot relay K1, finally realize water filling and the draining of container 11.
During use: when anhydrous in container 11 or water is little time, float 5 can drop on gland bonnet 8 due to the effect of gravity, and now in float 5, magnet steel 6 is often opening tongue tube 10 place, and the switch often opened in tongue tube 10 is closed; Because magnet steel 6 in float 5 is away from normally closed tongue tube 9, the switch in normally closed tongue tube 9 remains closed; And S1 is in closure state in hysteresis control circuit 12, S2 is in closure state, causes one-way SCR V1 saturation conduction, makes relay K 1 adhesive, realizes water filling;
When container 11 water filling, liquid level rises, and float 5 can rise gradually due to the effect of buoyancy, and when float 5 is away from when often leaving tongue tube 10 and arrive normally closed tongue tube 9 place, often open the switch disconnection in tongue tube 10, the switch in normally closed tongue tube 9 remains closed; And S1 is in off-state in hysteresis control circuit 12, S2 is in closure state, causes the state that one-way SCR V1 keeps original, and relay K 1 continues adhesive, continues water filling and achieves hysteresis, add hysteresis zone;
When container 11 continues water filling, liquid level continues to rise, and float 5 can rise gradually due to the effect of buoyancy, and when float 5 rises to jump ring 4, in float 5, magnet steel 5 is away from often opening tongue tube 10, and the switch often opened in tongue tube 10 disconnects; In float 5, magnet steel 6 is at normally closed tongue tube 9 place, and the switch in normally closed tongue tube 9 disconnects; And S1 is in off-state in hysteresis control circuit 12, S2 is in off-state, and cause one-way SCR V1 to reach turn-off criterion and not conducting, relay K 1 disconnects, and realizes closing water or draining.
When container 11 liquid level is declined by a high position, float 5 declines simultaneously, when float 5 away from normally closed tongue tube 9 and do not arrive often open tongue tube 10 place time, switch in normally closed tongue tube 9 becomes closure state by disconnection, the switch often opened in tongue tube 10 remains open, one-way SCR V1 turn-on condition does not meet, and relay K 1 remains open state.Water is closed in continuation or draining achieves hysteresis, adds hysteresis zone;
When container 11 liquid level continues to decline, float 5 declines simultaneously, when float 5 away from normally closed tongue tube 9 and arrive often open tongue tube 10 place time, switch closed condition in normally closed tongue tube 9, the switch often opened in tongue tube 10 becomes closure state by disconnection, and in hysteresis control circuit 12, S1 is in closure state, S2 is in closure state, cause one-way SCR V1 saturation conduction, make relay K 1 adhesive, realize water filling.
The level switch of described band lag function is wanted to regulate hysteresis zone, need only adjust the position of jump ring 4 on blank pipe pillar 2.
The level switch of described band lag function is wanted to regulate height of liquid level inside container, need only adjust the length of blank pipe pillar 2.
The working power of described hysteresis control circuit 12 can select the one in direct current 12V, 24V, 36V, is a kind of trouble free service power supply.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
The level switch of band lag function of the present invention is when liquid level changes in hysteresis zone, hysteresis control circuit repeat circuit hold mode is constant, when only having liquid level not in hysteresis zone, hysteresis control circuit repeat circuit state just can change, effectively can extend the life-span of water level switch output contact, effectively can extend the life-span of output control unit equipment, more stably can indicate liquid level position.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (6)
1. the level switch with lag function, is characterized in that: comprise mechanical hook-up and hysteresis control circuit; Described mechanical hook-up comprises blank pipe pillar; The upper end of described blank pipe pillar is provided with threaded cap, and lower end is provided with gland bonnet; Described blank pipe pillar is fixed on the upper end of container by threaded cap; Normally closed tongue tube and Chang Kai tongue tube is provided with in described blank pipe pillar; The surface of described blank pipe pillar is provided with jump ring; Described blank pipe pillar is arranged with float, in described float, is provided with magnet steel; Described float when moving by magnet steel and normally closed tongue tube or the input signal being combined as hysteresis control circuit often opening tongue tube, the centre of described normally closed tongue tube and Chang Kai tongue tube is hysteresis zone, realizes hysteresis when container water filling and draining or liquid level indicate.
2. the level switch of band lag function according to claim 1, is characterized in that: described hysteresis control circuit comprises one-way SCR V1, diode V2, resistance R1, electric capacity C1, C2 and C3, relay K 1, input signal connection terminal J2, the sub-J1 of power supply constrained input signal terminal; Hysteresis control circuit is accessed respectively by wire in the two ends of described normally closed tongue tube and Chang Kai tongue tube; Described normally closed tongue tube is the S2 in hysteresis control circuit, and described tongue tube of often opening is S1 in hysteresis control circuit; Described float is mobile when normally closed tongue tube on blank pipe pillar, and the switch S 2 in normally closed tongue tube can disconnect; Described float is in time often opening tongue tube, and the switch S 1 often held in tongue tube can close; Described normally closed tongue tube or the disconnection of often driving switch in tongue tube and the closed input signal as hysteresis control circuit, described hysteresis control circuit controls the conducting of one-way SCR V1 by the input signal of normally closed tongue tube and Chang Kai tongue tube, thus the action of pilot relay K1, finally realize hysteresis when container water filling and draining or liquid level indicate.
3. the level switch of band lag function according to claim 1, is characterized in that: the junction, upper end of described threaded cap and container is also provided with the first O-ring seal, and described first O-ring seal is used for the sealing at blank pipe pillar upper end and container joint place; The junction, lower end of described gland bonnet and blank pipe pillar is also provided with the second O-ring seal, and described second O-ring seal is used for preventing liquid in container from infiltrating in blank pipe pillar.
4. the level switch of band lag function according to claim 1, is characterized in that: described normally closed tongue tube and Chang Kai tongue tube are between the upper and lower every placement, and normally closed tongue tube is arranged on the top of often opening tongue tube.
5. the level switch of band lag function according to claim 1, is characterized in that: described jump ring is arranged on the top of normally closed tongue tube, the below of threaded cap.
6. the level switch of band lag function according to claim 1, it is characterized in that: described float is arranged on the below of jump ring, the top of gland bonnet, described float can move up and down on blank pipe pillar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410719024.2A CN104460719A (en) | 2014-12-03 | 2014-12-03 | Liquid level switch with hysteresis function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410719024.2A CN104460719A (en) | 2014-12-03 | 2014-12-03 | Liquid level switch with hysteresis function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104460719A true CN104460719A (en) | 2015-03-25 |
Family
ID=52906938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410719024.2A Pending CN104460719A (en) | 2014-12-03 | 2014-12-03 | Liquid level switch with hysteresis function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104460719A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106774471A (en) * | 2016-12-15 | 2017-05-31 | 南京工业职业技术学院 | A kind of self-locking floating-ball level switch |
| CN109360769A (en) * | 2018-11-21 | 2019-02-19 | 沈阳明远电气科技有限公司 | Tongue tube liquid level relay |
| CN111156710A (en) * | 2020-01-21 | 2020-05-15 | 高雪娇 | Combination switch and water heating blanket host comprising same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2184978Y (en) * | 1994-04-13 | 1994-12-07 | 王明伦 | Core hole type multi-level float program control switch |
| CN2248885Y (en) * | 1995-06-24 | 1997-03-05 | 哈尔滨现代电子应用技术开发部 | Magnetic floating ball type device for automatically controlling liquid level |
| JP2009053892A (en) * | 2007-08-27 | 2009-03-12 | Miura Co Ltd | Liquid level control system |
| CN101656169A (en) * | 2009-08-04 | 2010-02-24 | 苏州优德通力电气有限公司 | Float switch |
| CN204270160U (en) * | 2014-12-03 | 2015-04-15 | 苏州市职业大学 | A kind of level switch with lag function |
-
2014
- 2014-12-03 CN CN201410719024.2A patent/CN104460719A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2184978Y (en) * | 1994-04-13 | 1994-12-07 | 王明伦 | Core hole type multi-level float program control switch |
| CN2248885Y (en) * | 1995-06-24 | 1997-03-05 | 哈尔滨现代电子应用技术开发部 | Magnetic floating ball type device for automatically controlling liquid level |
| JP2009053892A (en) * | 2007-08-27 | 2009-03-12 | Miura Co Ltd | Liquid level control system |
| CN101656169A (en) * | 2009-08-04 | 2010-02-24 | 苏州优德通力电气有限公司 | Float switch |
| US20120125756A1 (en) * | 2009-08-04 | 2012-05-24 | Gp Enterprises Co., Ltd | Float switch |
| CN204270160U (en) * | 2014-12-03 | 2015-04-15 | 苏州市职业大学 | A kind of level switch with lag function |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106774471A (en) * | 2016-12-15 | 2017-05-31 | 南京工业职业技术学院 | A kind of self-locking floating-ball level switch |
| CN106774471B (en) * | 2016-12-15 | 2019-06-18 | 南京工业职业技术学院 | A kind of self-locking floating-ball level switch |
| CN109360769A (en) * | 2018-11-21 | 2019-02-19 | 沈阳明远电气科技有限公司 | Tongue tube liquid level relay |
| CN111156710A (en) * | 2020-01-21 | 2020-05-15 | 高雪娇 | Combination switch and water heating blanket host comprising same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104460719A (en) | Liquid level switch with hysteresis function | |
| CN204270160U (en) | A kind of level switch with lag function | |
| CN201662726U (en) | Tubular ball float water level inductive switch | |
| CN100520658C (en) | Controller for fluid flow and current switch | |
| CN102693867A (en) | Buoy switch | |
| CN105155624A (en) | Household intelligent water-storage system and method | |
| CN203373816U (en) | Suspension type electric control water servo device | |
| CN204177450U (en) | Scraper hydraulic reservoir depth alarm device | |
| CN103745880B (en) | A kind of liquid level detection switch system | |
| CN203674074U (en) | Single-float-ball high-low liquid level detection switch | |
| CN202671238U (en) | Anti-leakage water purifier | |
| CN209512992U (en) | A kind of water level sensor | |
| CN202768944U (en) | Electromagnetic water valve with multi-channel double-switch function | |
| CN202631059U (en) | Transverse liquid level sensor | |
| CN205805940U (en) | A kind of intelligence submersible pump | |
| CN106494541A (en) | A kind of motorcycle tank | |
| CN205730518U (en) | A kind of double filter element filtering device | |
| CN204454551U (en) | A kind of liquid sucking device with level sensing | |
| CN203230597U (en) | Intelligent water-level automatic detecting device | |
| CN202657977U (en) | Water purifier leakage automatic water-break device | |
| CN208705735U (en) | Automatic control water level switching device | |
| CN108032941A (en) | A kind of motorcycle tank | |
| CN204572407U (en) | A kind of water level detecting equipment of new electronic control water pump | |
| CN203474192U (en) | Multifunctional middle-section locking device | |
| CN208672107U (en) | A kind of power distribution station water level alarm system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
|
| RJ01 | Rejection of invention patent application after publication |