CN219532189U - Liquid level meter - Google Patents
Liquid level meter Download PDFInfo
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- CN219532189U CN219532189U CN202320199777.XU CN202320199777U CN219532189U CN 219532189 U CN219532189 U CN 219532189U CN 202320199777 U CN202320199777 U CN 202320199777U CN 219532189 U CN219532189 U CN 219532189U
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- optical signal
- signal transmitting
- signal receiving
- transmitting unit
- end body
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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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The utility model discloses a liquid level meter, comprising: the detection end body is provided with an optical signal transmitting module and an optical signal receiving module, the optical signal transmitting module comprises an optical signal transmitting unit, the optical signal receiving module comprises an optical signal receiving unit, and the optical signal transmitting unit and the optical signal receiving unit are oppositely arranged; the optical path adjusting piece is positioned between the optical signal transmitting unit and the optical signal receiving unit, and can adjust the optical signal transmitted by the optical signal transmitting unit, when the liquid level is higher than the optical signal transmitting unit, the optical signal transmitted by the optical signal transmitting unit passes through the optical path adjusting piece and is received by the optical signal receiving unit, so that the optical signal receiving unit generates a first signal, and when the liquid level is lower than the optical signal transmitting unit, the optical signal transmitted by the optical signal transmitting unit is prevented from being received by the optical signal receiving unit after being adjusted by the optical path adjusting piece, so that the optical signal receiving unit generates a second signal. The utility model has higher measurement accuracy.
Description
Technical Field
The utility model belongs to the technical field of liquid level detection, and particularly relates to a liquid level meter.
Background
The liquid level meter is a measuring instrument for detecting liquid level, is often applied to water home appliances to detect water level, is of a mechanical float type or capacitive structure, has large volume and poor measurement precision, can only detect liquid level with single height generally, and cannot meet the increasingly high intelligent requirements of the water home appliances.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model proposes a level gauge with a high measuring accuracy.
According to an embodiment of the utility model, a liquid level gauge comprises: the detection end body is provided with an optical signal transmitting module and an optical signal receiving module, the optical signal transmitting module comprises an optical signal transmitting unit, the optical signal receiving module comprises an optical signal receiving unit, and the optical signal transmitting unit and the optical signal receiving unit are oppositely arranged; the optical path adjusting piece is positioned between the optical signal transmitting unit and the optical signal receiving unit, and can adjust the optical signal sent by the optical signal transmitting unit, when the liquid level is higher than the optical signal transmitting unit, the optical signal sent by the optical signal transmitting unit passes through the optical path adjusting piece and then is received by the optical signal receiving unit, so that the optical signal receiving unit generates a first signal, and when the liquid level is lower than the optical signal transmitting unit, the optical signal sent by the optical signal transmitting unit is prevented from being received by the optical signal receiving unit after being adjusted by the optical path adjusting piece, so that the optical signal receiving unit generates a second signal.
According to the liquid level meter provided by the embodiment of the utility model, the liquid level meter has at least the following technical effects: when the liquid level meter is used for detecting the liquid level of transparent liquid, the detection end body is only required to be immersed in the liquid, when the liquid level is higher than the optical signal transmitting unit, the optical signal transmitted by the optical signal transmitting unit can be transmitted to the optical signal receiving unit, so that the optical signal receiving unit generates a first signal, otherwise, when the liquid level is lower than the optical signal transmitting unit, the optical signal transmitted by the optical signal transmitting unit cannot be transmitted to the optical signal receiving unit, so that the optical signal receiving unit generates a second signal, and therefore, whether the liquid reaches a certain liquid level can be accurately judged.
According to some embodiments of the utility model, the optical signal transmitting module and the optical signal receiving module are both arranged in a strip shape, the optical signal transmitting module includes a plurality of optical signal transmitting units, the optical signal receiving module includes a plurality of optical signal receiving units, and the optical signal transmitting units and the optical signal receiving units are arranged in a one-to-one correspondence. So the optical signal transmitting unit and the optical signal receiving unit that the one-to-one correspondence of accessible not co-ordination set up detects the liquid level of not co-ordination to the realization detects the liquid level of not co-ordination, cooperates extremely high detection precision, thereby can satisfy the higher intelligent requirement of water household electrical appliances.
According to some embodiments of the utility model, the plurality of optical signal transmitting units are arranged at uniform intervals, and the plurality of optical signal receiving units are arranged at uniform intervals.
According to some embodiments of the utility model, the optical path adjusting member is a transparent inclined surface portion, one side of the inclined surface portion can be immersed into the liquid to be measured along with the detection end body, when the liquid level of the liquid to be measured is higher than the optical signal transmitting unit, the optical signal sent by the optical signal transmitting unit enters the inclined surface portion and is received by the optical signal receiving unit after being refracted out of the inclined surface portion, and when the liquid level of the liquid to be measured is lower than the optical signal transmitting unit, the optical signal sent by the optical signal transmitting unit is prevented from being received by the optical signal receiving unit after being reflected by the inclined surface portion.
According to some embodiments of the present utility model, the detection end body is integrally and transparently arranged, a first installation cavity, a second installation cavity and a detection groove are provided on the detection end body, the optical signal transmitting module is installed in the first installation cavity in a sealing manner, the optical signal receiving module is installed in the second installation cavity in a sealing manner, the detection groove can be filled with a liquid to be detected, the inclined surface portion is a groove wall of the detection groove, and when the liquid level in the detection groove is higher than that of the optical signal transmitting unit, an optical signal sent by the optical signal transmitting unit passes through the inclined surface portion and is received by the optical signal receiving unit. When the liquid level in the detection groove is higher than the optical signal transmitting unit, the optical signal transmitted by the optical signal transmitting unit is reflected through the inclined surface part of the detection groove and then received by the corresponding optical signal receiving unit, so that the optical signal receiving unit generates a first signal.
According to some embodiments of the present utility model, the detection end body includes a first detection end body and a second detection end body that are disposed at intervals, each of the first detection end body and the second detection end body is made of a transparent material, a first installation cavity is disposed on the first detection end body, a second installation cavity is disposed on the second detection end body, the optical signal transmitting module is sealingly installed in the first installation cavity, the optical signal receiving module is sealingly installed in the second installation cavity, the inclined surface portion is a side wall of the first detection end body or the second detection end body, and when a liquid level between the first detection end body and the second detection end body is higher than that of the optical signal transmitting unit, an optical signal emitted by the optical signal transmitting unit is received by the optical signal receiving unit after passing through the inclined surface portion. When the liquid level of the liquid to be measured is higher than the optical signal transmitting unit, the optical signal transmitted by the optical signal transmitting unit is refracted through the inclined plane part and then received by the corresponding optical signal receiving unit, so that the optical signal receiving unit generates a first signal.
According to some embodiments of the utility model, the optical signal transmitting unit is an optical signal transmitting lamp, and the optical signal receiving unit is a photosensitive receiving lamp.
According to some embodiments of the utility model, the optical signal transmitting unit is an infrared transmitting lamp and the optical signal receiving unit is an infrared photosensitive receiving lamp.
According to some embodiments of the utility model, one end of the detection end body is connected with a mounting seat, and the mounting seat is provided with connecting threads. The liquid level meter can be connected and installed with an external device or equipment needing to detect the liquid level by matching with the connecting screw threads on the installation seat.
According to some embodiments of the utility model, a sealing ring is further sleeved on the mounting seat. The arrangement of the sealing ring can ensure that the mounting seat has better tightness after being connected with an external device or equipment.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of one embodiment of a level gauge of the present utility model;
FIG. 2 is one of the schematic cross-sectional views of the level gauge shown in FIG. 1;
FIG. 3 is a second schematic cross-sectional view of the level gauge of FIG. 1, showing an optical path of an optical signal emitted by the optical signal emitting unit when the liquid level is higher than the optical signal emitting unit;
FIG. 4 is a second schematic cross-sectional view of the level gauge of FIG. 1, showing an optical path of an optical signal emitted by the optical signal emitting unit when the liquid level is below the optical signal emitting unit;
FIG. 5 is a schematic view of another embodiment of the level gauge of the present utility model;
FIG. 6 is one of the schematic cross-sectional views of the level gauge shown in FIG. 5;
FIG. 7 is a second schematic cross-sectional view of the level gauge of FIG. 5, showing an optical path of an optical signal emitted by the optical signal emitting unit when the liquid level is higher than the optical signal emitting unit;
fig. 8 is a second schematic cross-sectional view of the level gauge shown in fig. 5, showing an optical path diagram of an optical signal emitted by the optical signal emitting unit when the liquid level is lower than the optical signal emitting unit.
Reference numerals:
100. detecting an end body; 100a, a first detection end body; 100b, a second detection end body; 101. an optical signal transmitting module; 101a, an optical signal transmitting unit; 102. an optical signal receiving module; 102a, an optical signal receiving unit; 103. a first mounting cavity; 104. a second mounting cavity; 105. a detection groove; 106. a mounting base; 107. a connecting thread; 108. a seal ring;
201. a bevel portion.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
A liquid level gauge according to an embodiment of the present utility model is described below with reference to fig. 1 to 8.
As shown in fig. 1 and fig. 2, a liquid level meter according to an embodiment of the present utility model includes a detection end body 100 and an optical path adjusting member, an optical signal transmitting module 101 and an optical signal receiving module 102 are disposed on the detection end body 100, the optical signal transmitting module 101 includes an optical signal transmitting unit 101a, the optical signal receiving module 102 includes an optical signal receiving unit 102a, and the optical signal transmitting unit 101a is disposed opposite to the optical signal receiving unit 102 a; the light path adjusting member is located between the light signal transmitting unit 101a and the light signal receiving unit 102a, and can adjust the light signal sent by the light signal transmitting unit 101a, when the liquid level is higher than the light signal transmitting unit 101a, the light signal sent by the light signal transmitting unit 101a passes through the light path adjusting member and is then received by the light signal receiving unit 102a, so that the light signal receiving unit 102a generates a first signal, and when the liquid level is lower than the light signal transmitting unit 101a, the light signal sent by the light signal transmitting unit 101a is prevented from being received by the light signal receiving unit 102a after being adjusted by the light path adjusting member, so that the light signal receiving unit 102a generates a second signal.
Specifically, when the liquid level meter is used for detecting the liquid level of transparent liquid, the detection end body 100 is only required to be immersed in the liquid, when the liquid level is higher than the optical signal transmitting unit 101a, an optical signal transmitted by the optical signal transmitting unit 101a can be transmitted to the optical signal receiving unit 102a, so that the optical signal receiving unit 102a generates a first signal, otherwise, when the liquid level is lower than the optical signal transmitting unit 101a, an optical signal transmitted by the optical signal transmitting unit 101a cannot be transmitted to the optical signal receiving unit 102a, so that the optical signal receiving unit 102a generates a second signal, and therefore whether the liquid reaches a certain liquid level can be accurately judged.
In some embodiments of the present utility model, the optical signal transmitting module 101 and the optical signal receiving module 102 are both disposed in a strip shape, the optical signal transmitting module 101 includes a plurality of optical signal transmitting units 101a, the optical signal receiving module 102 includes a plurality of optical signal receiving units 102a, and the plurality of optical signal transmitting units 101a are disposed in a one-to-one correspondence with the plurality of optical signal receiving units 102a. As shown in fig. 2, the optical signal transmitting module 101 includes 3 optical signal transmitting units 101a, and the optical signal receiving module 102 includes 3 optical signal receiving units 102a, so that the optical signal transmitting units 101a and the optical signal receiving units 102a, which are arranged in a one-to-one correspondence manner at different heights, can be matched to detect the liquid levels at different heights, thereby realizing detection of the liquid levels at different heights, and meeting the increasingly high intelligent requirements of the water home appliances.
As shown in fig. 2, in some embodiments of the present utility model, 3 optical signal transmitting units 101a are arranged at uniform intervals, and 3 optical signal receiving units 102a are arranged at uniform intervals.
In some embodiments of the present utility model, the optical path adjusting member is a transparent inclined surface portion 201, one side of the inclined surface portion 201 can be immersed in the liquid to be measured along with the detecting end body 100, when the liquid level of the liquid to be measured is higher than the optical signal transmitting unit 101a, the optical signal emitted by the optical signal transmitting unit 101a enters the inclined surface portion 201 and is received by the optical signal receiving unit 102a after being refracted out of the inclined surface portion 201, and when the liquid level of the liquid to be measured is lower than the optical signal transmitting unit 101a, the optical signal emitted by the optical signal transmitting unit 101a is prevented from being received by the optical signal receiving unit 102a after being reflected by the inclined surface portion 201.
In some embodiments of the present utility model, the detection end body 100 is integrally and transparently disposed, the detection end body 100 is provided with a first installation cavity 103, a second installation cavity 104 and a detection groove 105, the optical signal transmitting module 101 is installed in the first installation cavity 103 in a sealing manner, the optical signal receiving module 102 is installed in the second installation cavity 104 in a sealing manner, the liquid to be detected can be filled into the detection groove 105, the inclined surface portion 201 is a groove wall of the detection groove 105, and when the liquid level in the detection groove 105 is higher than that of the optical signal transmitting unit 101a, the optical signal sent by the optical signal transmitting unit 101a is received by the optical signal receiving unit 102a after passing through the inclined surface portion 201. As shown in fig. 3, when the liquid level in the detection groove 105 is higher than the optical signal transmitting unit 101a, the optical signal emitted by the optical signal transmitting unit 101a is refracted through the inclined surface portion 201 of the detection groove 105, penetrates through the inclined surface portion 201, and is received by the corresponding optical signal receiving unit 102a, so that the optical signal receiving unit 102a generates a first signal, wherein the optical signal emitted by the optical signal transmitting unit 101a forms an angle of 45 ° with the inclined surface portion 201; as shown in fig. 4, when the liquid level in the detection groove 105 is lower than the optical signal transmitting unit 101a, the optical signal emitted by the optical signal transmitting unit 101a is reflected by the inclined surface portion 201 of the detection groove 105, and cannot penetrate the inclined surface portion 201, so that the optical signal receiving unit 102a is prevented from entering the corresponding optical signal receiving unit 102a, the optical signal receiving unit 102a generates the second signal, and in addition, the detection end body 100 is integrally arranged, so that the production assembly efficiency can be effectively improved, and the production cost can be saved.
As shown in fig. 5 and 6, in some embodiments of the present utility model, the detection end body 100 includes a first detection end body 100a and a second detection end body 100b that are disposed at intervals, the first detection end body 100a and the second detection end body 100b are made of transparent materials, a first mounting cavity 103 is disposed on the first detection end body 100a, a second mounting cavity 104 is disposed on the second detection end body 100b, the optical signal transmitting module 101 is sealingly mounted in the first mounting cavity 103, the optical signal receiving module 102 is sealingly mounted in the second mounting cavity 104, the inclined surface portion 201 is a sidewall of the first detection end body 100a or the second detection end body 100b, and when the liquid level between the first detection end body 100a and the second detection end body 100b is higher than that of the optical signal transmitting unit 101a, the optical signal emitted by the optical signal transmitting unit 101a is received by the optical signal receiving unit 102a after passing through the inclined surface portion 201. As shown in fig. 7, when the liquid level of the liquid to be measured is higher than the optical signal transmitting unit 101a, the optical signal sent by the optical signal transmitting unit 101a is refracted through the inclined plane portion 201 by the inclined plane portion 201 and then received by the corresponding optical signal receiving unit 102a, so that the optical signal receiving unit 102a generates a first signal, wherein the optical signal sent by the optical signal transmitting unit 101a forms an angle of 45 ° with the inclined plane portion 201; as shown in fig. 8, when the liquid level of the liquid to be measured is lower than the optical signal transmitting unit 101a, the optical signal emitted by the optical signal transmitting unit 101a is reflected by the inclined surface 201 and cannot penetrate the inclined surface 201, so that the liquid does not enter the corresponding optical signal receiving unit 102a, and the optical signal receiving unit 102a generates the second signal.
In some embodiments of the present utility model, the optical signal transmitting unit 101a is an optical signal transmitting lamp, and the optical signal receiving unit 102a is a photosensitive receiving lamp.
In some embodiments of the present utility model, the optical signal transmitting unit 101a is an infrared transmitting lamp, and the optical signal receiving unit 102a is an infrared photosensitive receiving lamp.
In some embodiments of the present utility model, a mounting seat 106 is connected to one end of the detection end body 100, and a connecting thread 107 is provided on the mounting seat 106. The liquid level meter can be connected and installed with an external device or equipment needing to detect the liquid level by matching with connecting threads 107 on the mounting seat 106.
In some embodiments of the present utility model, the mounting base 106 is further sleeved with a sealing ring 108. The sealing ring 108 can ensure that the mounting seat 106 has better tightness after being connected with an external device or equipment.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The present utility model is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and these equivalent modifications or substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.
Claims (10)
1. A level gauge, comprising:
the detection end body (100), an optical signal transmitting module (101) and an optical signal receiving module (102) are arranged on the detection end body (100), the optical signal transmitting module (101) comprises an optical signal transmitting unit (101 a), the optical signal receiving module (102) comprises an optical signal receiving unit (102 a), and the optical signal transmitting unit (101 a) and the optical signal receiving unit (102 a) are arranged oppositely;
the optical path adjusting piece is arranged between the optical signal transmitting unit (101 a) and the optical signal receiving unit (102 a), and can adjust an optical signal sent by the optical signal transmitting unit (101 a), when the liquid level is higher than that of the optical signal transmitting unit (101 a), the optical signal sent by the optical signal transmitting unit (101 a) passes through the optical path adjusting piece and then is received by the optical signal receiving unit (102 a), so that the optical signal receiving unit (102 a) generates a first signal, and when the liquid level is lower than that of the optical signal transmitting unit (101 a), the optical signal sent by the optical signal transmitting unit (101 a) is adjusted by the optical path adjusting piece and then is prevented from being received by the optical signal receiving unit (102 a), so that the optical signal receiving unit (102 a) generates a second signal.
2. A fluid level gauge as defined in claim 1, wherein: the optical signal transmitting module (101) and the optical signal receiving module (102) are arranged in a strip shape, the optical signal transmitting module (101) comprises a plurality of optical signal transmitting units (101 a), the optical signal receiving module (102) comprises a plurality of optical signal receiving units (102 a), and the optical signal transmitting units (101 a) and the optical signal receiving units (102 a) are arranged in a one-to-one correspondence.
3. A fluid level gauge as defined in claim 2, wherein: the light signal transmitting units (101 a) are uniformly arranged at intervals, and the light signal receiving units (102 a) are uniformly arranged at intervals.
4. A fluid level gauge as defined in claim 1, wherein: the light path adjusting piece is a transparent inclined surface part (201), one side of the inclined surface part (201) can be immersed into liquid to be detected along with the detection end body (100), when the liquid level of the liquid to be detected is higher than that of the light signal transmitting unit (101 a), a light signal emitted by the light signal transmitting unit (101 a) enters the inclined surface part (201) and is received by the light signal receiving unit (102 a) after being refracted out of the inclined surface part (201), and when the liquid level of the liquid to be detected is lower than that of the light signal transmitting unit (101 a), the light signal emitted by the light signal transmitting unit (101 a) is prevented from being received by the light signal receiving unit (102 a) after being reflected by the inclined surface part (201).
5. A fluid level gauge as defined in claim 4, wherein: the detection end body (100) is transparent in an integrated mode, a first installation cavity (103), a second installation cavity (104) and a detection groove (105) are formed in the detection end body (100), the optical signal transmitting module (101) is installed in the first installation cavity (103) in a sealing mode, the optical signal receiving module (102) is installed in the second installation cavity (104) in a sealing mode, liquid to be detected can be filled into the detection groove (105), the inclined surface portion (201) is the groove wall of the detection groove (105), and when the liquid level in the detection groove (105) is higher than that of the optical signal transmitting unit (101 a), an optical signal emitted by the optical signal transmitting unit (101 a) is received by the optical signal receiving unit (102 a) after passing through the inclined surface portion (201).
6. A fluid level gauge as defined in claim 4, wherein: the detection end body (100) comprises a first detection end body (100 a) and a second detection end body (100 b) which are arranged at intervals, the first detection end body (100 a) and the second detection end body (100 b) are made of transparent materials, a first installation cavity (103) is arranged on the first detection end body (100 a), a second installation cavity (104) is arranged on the second detection end body (100 b), the optical signal transmitting module (101) is hermetically installed in the first installation cavity (103), the optical signal receiving module (102) is hermetically installed in the second installation cavity (104), the inclined surface part (201) is the side wall of the first detection end body (100 a) or the second detection end body (100 b), and when the liquid level between the first detection end body (100 a) and the second detection end body (100 b) is higher than that of the optical signal transmitting unit (101 a), the optical signal transmitting unit (101 a) transmits an optical signal and then the optical signal is received by the inclined surface part (201 a).
7. A fluid level gauge as defined in claim 1, wherein: the optical signal transmitting unit (101 a) is an optical signal transmitting lamp, and the optical signal receiving unit (102 a) is a photosensitive receiving lamp.
8. A fluid level gauge as defined in claim 7, wherein: the optical signal transmitting unit (101 a) is an infrared transmitting lamp, and the optical signal receiving unit (102 a) is an infrared photosensitive receiving lamp.
9. A fluid level gauge as defined in claim 1, wherein: one end of the detection end body (100) is connected with a mounting seat (106), and a connecting thread (107) is arranged on the mounting seat (106).
10. A fluid level gauge as defined in claim 9, wherein: and a sealing ring (108) is also sleeved on the mounting seat (106).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320199777.XU CN219532189U (en) | 2023-02-09 | 2023-02-09 | Liquid level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320199777.XU CN219532189U (en) | 2023-02-09 | 2023-02-09 | Liquid level meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219532189U true CN219532189U (en) | 2023-08-15 |
Family
ID=87645595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320199777.XU Active CN219532189U (en) | 2023-02-09 | 2023-02-09 | Liquid level meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219532189U (en) |
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2023
- 2023-02-09 CN CN202320199777.XU patent/CN219532189U/en active Active
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