CN112345037A - Multifunctional magnetic controller for liquid level counting data display - Google Patents
Multifunctional magnetic controller for liquid level counting data display Download PDFInfo
- Publication number
- CN112345037A CN112345037A CN202011332756.8A CN202011332756A CN112345037A CN 112345037 A CN112345037 A CN 112345037A CN 202011332756 A CN202011332756 A CN 202011332756A CN 112345037 A CN112345037 A CN 112345037A
- Authority
- CN
- China
- Prior art keywords
- liquid level
- fixedly connected
- side wall
- plate
- magnetic
- 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.)
- Withdrawn
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The invention relates to the technical field of liquid level monitoring, and discloses a multifunctional magnetic liquid level counting data display controller which comprises a buoy, wherein a magnetostrictive liquid level sensor is fixedly connected to the upper end of the buoy, a magnetic turning plate is fixedly connected to the right side wall of the buoy, a fixing plate is fixedly connected to the front side wall of the magnetic turning plate, two magnetic memory switches are arranged on the front side of the fixing plate, the two magnetic memory switches are connected with an installation mechanism and connected with the fixing plate through the installation mechanism, a photoelectric liquid level switch is arranged on the left side of the buoy, a strip-shaped hole is formed in the left side wall of the buoy, a transparent plate is fixedly arranged inside the strip-shaped hole, and an installation cover. The invention can realize the visual display of the liquid level on site, the remote transmission of signals and the liquid level alarm, and the double display and double alarm of the liquid level can improve the reliability and the anti-interference performance of the product, and can carry out multi-position and multi-point alarm at the same time, thereby having wide application range of the alarm.
Description
Technical Field
The invention relates to the technical field of liquid level monitoring, in particular to a multifunctional magnetic controller for displaying liquid level counting data.
Background
The magnetic liquid level meter works according to the buoyancy principle and the magnetic coupling principle, when the liquid level in a measured container rises and falls, the floater in the main conduit of the liquid level meter also rises and falls, the permanent magnetic steel in the floater is transmitted to the field indicator through magnetic coupling, the red and white turning columns are driven to turn over for 180 degrees, the liquid level rises, and the turning columns are turned from white to red; the liquid level is reduced, the column is turned to be white, and the red and white boundary positions of the indicator are the actual height of the medium liquid level in the container, so that the liquid level indication is realized.
Through retrieval, the Chinese patent publication No. CN211121517U discloses a magnetic turning plate type liquid level meter, which comprises a liquid level meter body, a turning plate indicator and a magnetic float, wherein a connecting pipeline is arranged on the left side of the liquid level meter body, a drain valve is arranged below the liquid level meter body, the turning plate indicator is connected on the right side of the liquid level meter body, a guide rod is fixed inside the liquid level meter body, a bearing is arranged on the outer side of the guide rod, and the magnetic float is connected on the outer side of the bearing;
through retrieval, the Chinese patent publication No. CN211121497U discloses a magnetic turning plate type liquid level meter, which comprises a mounting pipe and a measuring unit, wherein three corresponding connecting columns are fixed on the circumferential surface of the mounting pipe, a fixed pipe is fixed on the left end surface of each connecting column, a connecting pipe is fixed between the mounting pipe and the fixed pipe, the mounting pipe is communicated with a uniform connecting pipe of the fixed pipe, and the measuring unit comprises a limiting shaft, a floating ring, a connecting rope and a magnetic float;
through retrieval, chinese patent publication No. CN208187503U discloses a magnetic suspension type level gauge, which comprises a level gauge body and an LED display, wherein the LED display comprises a display panel and a circuit integrated board, and further comprises a circuit protection tube, the circuit integrated board is installed in the circuit protection tube, an air cooling sleeve is sleeved outside the circuit protection tube, an annular gap is formed between the air cooling sleeve and the circuit protection tube, a magic tube cooler is installed at the top of the air cooling sleeve, and an air outlet is formed at the bottom of the air cooling sleeve;
the three publications mentioned above still have the following drawbacks:
the first, the first and the second patent publications are all that the magnetic turning column in the magnetic turning plate is turned over under the magnetic coupling action to display the liquid level, the third patent publication is to display the liquid level through an LED display, but in the three patents, the mode of detecting the liquid level is single, and under the condition of influence of an external magnetic field or failure of magnetism, the single detection mode cannot timely reflect the liquid level condition, so that the error of liquid level display is easily caused;
second, all not be provided with liquid level alarming function in the above-mentioned three patent that disclose, when people did not in time look over the liquid level height condition, when the liquid level exceeded the default, people can't in time learn, were unfavorable for liquid level control to use.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, under the condition of influence of an external magnetic field or magnetic failure, a single detection mode cannot timely reflect the liquid level condition, liquid level display errors are easily caused, a liquid level alarm function is not arranged, and when the liquid level height condition is not timely checked by people and the liquid level exceeds a preset value, the people cannot timely know that the liquid level control is not facilitated to use, and the multifunctional magnetic liquid level counting data display controller is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a controller for displaying multifunctional magnetic liquid level count data comprises a buoy, wherein a magnetostrictive liquid level sensor is fixedly connected to the upper end of the buoy, a magnetic turning plate is fixedly connected to the right side wall of the buoy, a fixed plate is fixedly connected to the front side wall of the magnetic turning plate, two magnetic memory switches are arranged on the front side of the fixed plate, the two magnetic memory switches are connected with an installation mechanism and connected with the fixed plate through the installation mechanism, a photoelectric liquid level switch is arranged on the left side of the buoy, a strip-shaped hole is formed in the left side wall of the buoy, a transparent plate is fixedly arranged inside the strip-shaped hole, an installation cover is sleeved on the left side of the buoy, the left outer side wall of the buoy is fixedly connected with the right end of the installation cover, the photoelectric liquid level switch is connected with an adjusting locking mechanism and connected with the installation cover through the adjusting locking mechanism, the equal fixedly connected with installation pipe in both ends about the left side wall of flotation pontoon, two the pipe wall left side of installation pipe is all fixed the mounting flange that has cup jointed, the fixed coupling in upper end of flotation pontoon has the annular plate, the upper end right side fixedly connected with alarm lamp of annular plate.
Preferably, every installation mechanism all includes two installation pieces and two screws, two installation piece one end in opposite directions respectively with homonymy magnetic memory switch's upper and lower both ends fixed connection, two the preceding lateral wall of installation piece respectively with the pole wall threaded connection of two screws, and the pole wall of two screws all with the preceding lateral wall threaded connection of fixed plate.
Preferably, the adjusting and locking mechanism comprises an adjusting screw, an anti-skid plate and a locking nut, the left side wall of the mounting cover is provided with an adjusting hole matched with the photoelectric liquid level switch, the right end of the upper side wall of the photoelectric liquid level switch is fixedly connected with a connecting block, the left side wall of the connecting block is fixedly connected with the right end of the adjusting screw, the left end of the adjusting screw penetrates through the adjusting hole and extends to the left side of the mounting cover, the side wall of the anti-skid plate is provided with a round hole and is movably sleeved with the rod wall of the adjusting screw through the round hole, and the left end of the rod wall of the adjusting screw is in threaded connection with the inner side wall.
Preferably, the lamp plate that the right lateral wall fixedly connected with slope of annular slab set up, the left side wall fixedly connected with light of lamp plate.
Preferably, the positions of the left outer side wall of the mounting cover, which are positioned at the front side and the rear side of the adjusting hole, are uniformly coated with scale marks.
Preferably, a buzzer is fixedly connected to the left side of the upper end of the annular plate.
Compared with the prior art, the invention provides a multifunctional magnetic controller for displaying liquid level counting data, which has the following beneficial effects:
1. the multifunctional magnetic controller for displaying the liquid level counting data can realize the double display of the field liquid level by the mutual matching of the two mounting pipes and the two mounting flanges, can realize the real-time digital display of the liquid level height by the magnetic turning plate while the field liquid level height is visually indicated by the magnetic turning plate, can alarm the liquid level by the mutual matching of the fixed plate, the magnetic memory switch, the photoelectric liquid level switch, the mounting cover and the transparent plate, is convenient for people to accurately control, improves the reliability and the anti-interference capability of a product by adopting a redundant design for an alarm signal, can still normally provide the liquid level alarm signal when the magnetic memory switch is interfered by an external magnetic field or fails by adopting the photoelectric liquid level switch, the magnetic liquid level sensor is coupled with the magnetic float, the magnetic turning plate and the magnetic memory switch, so that the visual display of the liquid level on site and the remote transmission of the output signal of the magnetic liquid level sensor and the liquid level alarm are realized, and the integrated structure is designed integrally, so that the appearance is attractive, the installation is convenient, the space is saved, and the mutual interference in the space is effectively prevented.
2. This multi-functional magnetic type level count is according to controller for display, installation mechanism through being equipped with, can dismantle change position to magnetism memory switch, be convenient for treat according to the reality that the warning position is adjusted and is used, through the regulation locking mechanism who is equipped with, can carry out quick adjustment and locking to photoelectricity liquid level switch's position, thereby also can treat according to the reality that the warning position is adjusted and is used, can increase magnetism memory switch and photoelectricity liquid level switch's quantity simultaneously, in order to carry out the multiposition, the multiposition is reported to the police, the application scope of warning is big.
The device has the advantages that the irrelevant parts are the same as or can be realized by the prior art, the visual display of the liquid level on site, the remote transmission of signals and the liquid level alarm can be realized, the reliability and the anti-interference performance of the product can be improved by the double display and the double alarm of the liquid level, meanwhile, the alarm can be carried out at multiple positions and multiple points, and the application range of the alarm is wide.
Drawings
FIG. 1 is a schematic structural diagram of a multifunctional magnetic liquid level counting data display controller according to the present invention;
FIG. 2 is an enlarged view of the portion A in FIG. 1;
FIG. 3 is an enlarged view of the portion B of FIG. 1;
fig. 4 is a partial side view of fig. 1.
In the figure: the device comprises a buoy 1, a magnetostrictive liquid level sensor 2, a magnetic turning plate 3, a fixing plate 4, a magnetic memory switch 5, a photoelectric liquid level switch 6, a transparent plate 7, an installation cover 8, a magnetic floater 9, an installation pipe 10, an installation flange 11, an annular plate 12, an alarm lamp 13, an installation block 14, a screw 15, an adjusting screw 16, an anti-slip plate 17, a locking nut 18, a lamp panel 19, an illuminating lamp 20, a scale mark 21 and a buzzer 22.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In embodiment 6, as shown in fig. 1, a buzzer 22 is fixedly connected to the left side of the upper end of the annular plate 12 of the device in addition to embodiment 1, and sound warning can be performed under the warning of the warning lamp 13, so that the warning effect is improved.
each mounting mechanism comprises two mounting blocks 14 and two screws 15, the opposite ends of the two mounting blocks 14 are fixedly connected with the upper end and the lower end of the same-side magnetic memory switch 5 respectively, the front side walls of the two mounting blocks 14 are in threaded connection with the rod walls of the two screws 15 respectively, the rod walls of the two screws 15 are in threaded connection with the front side wall of the fixed plate 4, each adjusting and locking mechanism comprises an adjusting screw 16, an anti-skid plate 17 and a locking nut 18, the left side wall of the mounting cover 8 is provided with an adjusting hole matched with the photoelectric liquid level switch 6, the right end of the upper side wall of the photoelectric liquid level switch 6 is fixedly connected with a connecting block, the left side wall of the connecting block is fixedly connected with the right end of the adjusting screw 16, the left end of the adjusting screw 16 passes through the adjusting hole and extends to the left side of the mounting cover 8, the side wall of the anti-skid plate 17 is, the pole wall left end of adjusting screw 16 and lock nut 18's inside wall threaded connection, the lamp plate 19 that the slope of the right side wall fixedly connected with slope of annular plate 12 set up, lamp plate 19's left side wall fixedly connected with light 20, and the position that the left side wall of installation cover 8 is located both sides around the regulation hole all coats and has evenly distributed's scale mark 21, the upper end left side fixedly connected with bee calling organ 22 of annular plate 12.
In the invention, when in use, two mounting pipes 10 and a liquid storage barrel to be detected outside are mounted and fixed through two mounting flanges, fluid enters the buoy 1, when the liquid level rises and falls, the magnetic floater 9 is driven to rise and fall under the action of buoyancy, the magnetostrictive liquid level sensor 2 can accurately measure the liquid level height by sending and receiving pulses and measuring the time interval between the initial pulse and the return pulse, the magnetic turning column in the magnetic turning plate 3 can turn over at the position of the magnetic floater 9 under the action of magnetic coupling, so that the liquid level height can be directly displayed, two magnetic memory switches 5 can be connected with a circuit under the action of magnetic coupling, so that an alarm signal can be sent, the photoelectric liquid level switch 6 can send light and can detect the liquid level height by utilizing the refraction and reflection principles of the light, thereby can send alarm signal, through adopting a magnetism float 9 simultaneous coupling magnetostriction level sensor 2, magnetism turns over board 3, magnetism memory switch 5, realize on-the-spot liquid level visual display and the teletransmission and the liquid level warning of magnetostriction level sensor 2 output signal, and whole integral type structural design, the appearance is pleasing to the eye, simple to operate, save space and effectually prevent the mutual interference in the space, cooperate photoelectric liquid level switch 6 again, can realize dual liquid level detection and dual liquid level simultaneously and report to the police.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The utility model provides a multi-functional magnetism formula level count controller for data display, includes flotation pontoon (1), its characterized in that, the upper end fixedly connected with magnetostriction level sensor (2) of flotation pontoon (1), the right flank wall fixedly connected with magnetism of flotation pontoon (1) turns over board (3), the preceding lateral wall fixedly connected with fixed plate (4) of board (3) is turned over to the magnetism, the front side of fixed plate (4) is equipped with two magnetism memory switches (5), two magnetism memory switch (5) all are connected with installation mechanism and are connected with fixed plate (4) through installation mechanism, the left side of flotation pontoon (1) is equipped with photoelectricity liquid level switch (6), the bar hole has been seted up to the left side wall of flotation pontoon (1), the internal fixation in bar hole is equipped with transparent plate (7), the left side cover of flotation pontoon (1) is equipped with installing cover (8), the left side wall of flotation pontoon (1) and the right-hand member fixed connection of installing cover (, photoelectric liquid level switch (6) are connected with the regulation locking mechanism and are connected with installation cover (8) through adjusting locking mechanism, the inside sliding connection of flotation pontoon (1) has magnetic float (9), the equal fixedly connected with installation pipe (10) in both ends about the left side wall of flotation pontoon (1), two the pipe wall left side of installation pipe (10) is all fixed mounting flange (11) of having cup jointed, the upper end fixed cup joint of flotation pontoon (1) has annular plate (12), the upper end right side fixedly connected with alarm lamp (13) of annular plate (12).
2. The controller for displaying the multifunctional magnetic liquid level counting data of claim 1, wherein each of the mounting mechanisms comprises two mounting blocks (14) and two screws (15), one opposite ends of the two mounting blocks (14) are fixedly connected with the upper end and the lower end of the magnetic memory switch (5) at the same side, the front side walls of the two mounting blocks (14) are respectively in threaded connection with the rod walls of the two screws (15), and the rod walls of the two screws (15) are both in threaded connection with the front side wall of the fixing plate (4).
3. The controller for displaying the multifunctional magnetic liquid level count data of claim 1, wherein the adjusting and locking mechanism comprises an adjusting screw (16), an anti-slip plate (17) and a locking nut (18), the left side wall of the mounting cover (8) is provided with an adjusting hole matched with the photoelectric liquid level switch (6), the right end of the upper side wall of the photoelectric liquid level switch (6) is fixedly connected with a connecting block, the left side wall of the connecting block is fixedly connected with the right end of the adjusting screw (16), the left end of the adjusting screw (16) penetrates through the adjusting hole and extends to the left side of the mounting cover (8), the side wall of the anti-slip plate (17) is provided with a round hole and is movably sleeved with the rod wall of the adjusting screw (16) through the round hole, and the left end of the rod wall of the adjusting screw (16) is in threaded connection with the inner side wall of the locking nut (18).
4. The controller of claim 1, wherein the lamp panel (19) is obliquely arranged and fixedly connected to the right outer side wall of the annular plate (12), and the illuminating lamp (20) is fixedly connected to the left side wall of the lamp panel (19).
5. The controller for displaying multifunctional magnetic liquid level counting data according to claim 1, wherein the positions of the left outer side wall of the mounting cover (8) at the front side and the rear side of the adjusting hole are coated with evenly distributed scale marks (21).
6. The controller for displaying multifunctional magnetic liquid level data according to claim 1, wherein a buzzer (22) is fixedly connected to the left side of the upper end of the annular plate (12).
7. The controller for displaying the multifunctional magnetic liquid level counting data of claim 1, comprising a float bowl (1), and is characterized in that a magnetostrictive liquid level sensor (2) is fixedly connected to the upper end of the float bowl (1), a magnetic turning plate (3) is fixedly connected to the right side wall of the float bowl (1), a fixing plate (4) is fixedly connected to the front side wall of the magnetic turning plate (3), two magnetic memory switches (5) are arranged on the front side of the fixing plate (4), the two magnetic memory switches (5) are both connected with a mounting mechanism and connected with the fixing plate (4) through the mounting mechanism, a photoelectric liquid level switch (6) is arranged on the left side of the float bowl (1), a strip-shaped hole is formed in the left side wall of the float bowl (1), a transparent plate (7) is fixedly arranged inside the strip-shaped hole, and a mounting cover (8) is sleeved on the left side of the float bowl (, the left outer side wall of the buoy (1) is fixedly connected with the right end of the installation cover (8), the photoelectric liquid level switch (6) is connected with an adjusting locking mechanism and is connected with the installation cover (8) through the adjusting locking mechanism, the inside of the buoy (1) is connected with a magnetic floater (9) in a sliding mode, the upper end and the lower end of the left side wall of the buoy (1) are fixedly connected with installation pipes (10), the left sides of the pipe walls of the two installation pipes (10) are fixedly sleeved with installation flanges (11), the upper end of the buoy (1) is fixedly sleeved with an annular plate (12), and the right side of the upper end of the annular plate (12) is fixedly connected with an alarm lamp (13);
each mounting mechanism comprises two mounting blocks (14) and two screws (15), one opposite end of each mounting block (14) is fixedly connected with the upper end and the lower end of the same-side magnetic memory switch (5), the front side walls of the two mounting blocks (14) are in threaded connection with the rod walls of the two screws (15), the rod walls of the two screws (15) are in threaded connection with the front side wall of the fixing plate (4), each adjusting and locking mechanism comprises an adjusting screw rod (16), an anti-skid plate (17) and a locking nut (18), the left side wall of the mounting cover (8) is provided with an adjusting hole matched with the photoelectric liquid level switch (6), the right end of the upper side wall of the photoelectric liquid level switch (6) is fixedly connected with a connecting block, the left side wall of the connecting block is fixedly connected with the right end of the adjusting screw rod (16), and the left end of the adjusting screw rod (16) passes through the adjusting hole and extends to the left side of the mounting cover (8), the utility model discloses a lamp, including antiskid ribbed tile (17), the pole wall activity of antiskid ribbed tile (17) has been seted up the round hole and has been cup jointed through round hole and adjusting screw (16) pole wall activity, the pole wall left end of adjusting screw (16) and the inside wall threaded connection of lock nut (18), lamp plate (19) that the right side lateral wall fixedly connected with slope of annular slab (12) set up, the left side wall fixedly connected with light (20) of lamp plate (19), the position that the left side lateral wall of installation cover (8) is located both sides all coats and has evenly distributed's scale mark (21), the upper end left side fixedly connected with bee calling organ (22) of annular slab (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011332756.8A CN112345037A (en) | 2020-11-25 | 2020-11-25 | Multifunctional magnetic controller for liquid level counting data display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011332756.8A CN112345037A (en) | 2020-11-25 | 2020-11-25 | Multifunctional magnetic controller for liquid level counting data display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112345037A true CN112345037A (en) | 2021-02-09 |
Family
ID=74365546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011332756.8A Withdrawn CN112345037A (en) | 2020-11-25 | 2020-11-25 | Multifunctional magnetic controller for liquid level counting data display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112345037A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857530A (en) * | 2021-03-17 | 2021-05-28 | 承德热河克罗尼仪表有限公司 | Electric float level meter measuring device and electric float level meter with same |
| CN115212809A (en) * | 2022-09-21 | 2022-10-21 | 西部铁建工程材料科技有限公司 | Quantitative feeding device and quantitative feeding method for production of polycarboxylate superplasticizer |
-
2020
- 2020-11-25 CN CN202011332756.8A patent/CN112345037A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857530A (en) * | 2021-03-17 | 2021-05-28 | 承德热河克罗尼仪表有限公司 | Electric float level meter measuring device and electric float level meter with same |
| CN115212809A (en) * | 2022-09-21 | 2022-10-21 | 西部铁建工程材料科技有限公司 | Quantitative feeding device and quantitative feeding method for production of polycarboxylate superplasticizer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112345037A (en) | Multifunctional magnetic controller for liquid level counting data display | |
| CN105640332A (en) | Water dispenser with water quality detection function | |
| KR102406733B1 (en) | Smart water meter | |
| CN214309027U (en) | Multifunctional magnetic controller for liquid level counting data display | |
| CN210570932U (en) | Water level detection mechanism of adjustable water tank of vertical water dispenser | |
| CN212988509U (en) | Ultrasonic alarm liquid level instrument with detachable filtering device | |
| CN102087134A (en) | Photoelectric liquid level meter | |
| CN210689777U (en) | Column display liquid level meter with low liquid level alarming function | |
| CN207395852U (en) | For the Integral ultrasonic liquid level gauge of underground pipe network water level non-contact measurement | |
| GB2345138A (en) | Overflow detector particularly for toilet cistern | |
| CN110806248B (en) | But positive reading formula intelligence teletransmission warning buoy level gauge | |
| CN107063391A (en) | A kind of contactless pair of thing position intelligent checking system | |
| CN220230604U (en) | Start flow detector | |
| CN206756265U (en) | A kind of contactless double thing positions intelligent checking system | |
| CN112268600A (en) | Ultrasonic alarm liquid level instrument with detachable filtering device | |
| CN214621399U (en) | Multifunctional liquid level display controller | |
| CN204514437U (en) | Two display magnetic floating ball lever meter | |
| CN212565343U (en) | All-weather buried pipe network leakage monitoring and alarming device | |
| CN212110202U (en) | Blind area detection device for bullseye double-color liquid level meter | |
| CN220960250U (en) | High-temperature high-pressure magnetic liquid level meter | |
| CN212458569U (en) | Three-color alarm indicating device for liquid level control | |
| CN211380876U (en) | Non-contact water level detection device for water boiler and water boiler | |
| CN218973574U (en) | Liquid level sensor with liquid level alarming function | |
| CN213364804U (en) | Device for measuring rotating speed and reverse rotation of water feeding pump | |
| CN211477310U (en) | Floating ball water level meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210209 |
|
| WW01 | Invention patent application withdrawn after publication |