Externally-attached liquid level meter

Abstract

An externally-pasted liquid level meter belongs to the technical field of liquid level meters and comprises a shell, a cover shell, a mounting assembly, a main board, a display panel and a display screen, the display panel and the main board are mounted on a mounting plate in the shell through the mounting assembly, the display screen is fixed on the display panel, the cover shell is mounted on the shell, the display panel and the main board are wrapped between the cover shell and the shell, and the display panel and the display screen are mounted in the shell. The display screen corresponds to the display viewing area on the cover shell; the mounting assembly comprises a fastening bolt, a first barrel, a first spring, a second barrel, a second spring and a fastening nut. The liquid level meter is simple in structure, convenient to operate, flexible, practical, safe, stable and wide in application range, and the mainboard and the display panel can be accurately installed at required positions and are adjustable.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level gauges, in particular to an externally attached liquid level gauge. Background Art

[0002] The external level meter is a new type of liquid level meter that uses the sonar ranging principle and micro-vibration analysis technology to measure the liquid level from the outside of the container. It includes a shell, a cover shell, a main board and a display board. The main board and the display board need to be installed on the shell, and then the cover shell is installed on the shell, so that the display screen on the display board just corresponds to the display viewing area of ​​the cover shell. The existing structure is to fix the copper column in the shell, and then the main board and the display board are respectively installed on the copper column by bolts. The height of the copper column will directly affect the installation position of the main board and the display board. In the actual assembly process, the height geometric dimensions of the copper column often deviate and cannot be accurately adjusted, or the cumulative processing error of the shell causes the display panel to be installed inaccurately and offset. The display screen cannot be well viewed through the cover shell, which affects the appearance and use of the liquid level meter. Therefore, it is necessary to design an external level meter to overcome the above problems. Utility Model Content

[0003] In order to avoid the above problems, the utility model provides an external liquid level gauge, which aims to solve the technical problem of being able to accurately install a main board and a display panel at a required position and being able to easily adjust the installation position.

[0004] The technical solution of the utility model is achieved by the following methods:

[0005] An external liquid level gauge, comprising: a housing, a cover, a mounting assembly, a main board, a display panel and a display screen, characterized in that:

[0006] The display screen 41 is fixed on the display panel 4. The display panel and the main board 3 are both mounted on the mounting plate 11 in the housing 1 through the mounting assembly 2. The mounting assembly is provided with at least 4 groups and symmetrically mounted at the edge of the display panel.

[0007] The mounting assembly 2 comprises a fastening bolt 21, a first cylinder 22, a first spring 23, a second cylinder 24, a second spring 25 and a fastening nut 26; wherein the fastening bolt 21 passes through the display panel 4, the first cylinder 22 and the first spring 23, the main board 3, the second cylinder 24 and the second spring 25, and the mounting plate in sequence and is mounted on the mounting plate 11 in cooperation with the fastening nut 26; the first cylinder 22 is supported between the display panel 4 and the main board 3, the second cylinder 24 is supported between the main board 3 and the mounting plate 11, and the lengths of the first cylinder 22 and the second cylinder 24 correspond to the heights and spacings of the display panel 4 and the main board 3; the mounting plate 11 is provided with threads that cooperate with the fastening bolt 21;

[0008] The first spring 23 and the second spring 25 are both sleeved on the fastening bolt 21 and are respectively located in the first cylinder 22 and the second cylinder 24. The first spring 23 and the second spring 25 are both set to a compressed state. A limiter 27 is installed in the upper part of the second cylinder 24. The two ends of the second spring 25 are respectively pressed between the main board 3 and the limiter 27. The first spring 23 is pressed between the display board 4 and the main board 3.

[0009] The cover shell is installed on the housing, and the display panel and the main board are covered between the cover shell and the housing, and the display screen corresponds to the display viewing window 51 on the cover shell.

[0010] The external liquid level gauge, wherein: the mounting plate is provided with a limit platform 28 for limiting the mounting position of the second cylinder.

[0011] The external liquid level gauge, wherein: when the length of the first cylinder 22 or the second cylinder 24 is insufficient, one or more adjusting pieces can be sleeved on the fastening bolt 21, and the outer diameter of the adjusting piece is larger than the inner diameter of the first cylinder 22 or the second cylinder 24 to compensate for the height difference of the first cylinder 22 or the second cylinder 24.

[0012] The external liquid level gauge, wherein: the adjusting member is a spring or a washer.

[0013] The external liquid level gauge, wherein: the main board is connected with a wiring terminal.

[0014] The external liquid level meter, wherein: the main board is provided with a power supply circuit, a sonar wave signal transmitting and receiving circuit, an MCU circuit, a current output circuit, a display circuit or an infrared receiving circuit.

[0015] The beneficial effects of the utility model are as follows:

[0016] Compared with the prior art, the utility model has the following beneficial effects: the installation component designed for the liquid level meter has a simple structure and is easy to operate. The main board and the display panel can be accurately installed in the required position. It is adjustable up and down, flexible and practical, safe and stable, and has a wide range of uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a partial cross-sectional structural schematic diagram of the utility model (before the cover shell and the back cover are installed);

[0018] Figure 2 This is a schematic cross-sectional view of the utility model (after the cover shell and the back cover are installed);

[0019] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;

[0020] Figure 4It is a schematic diagram of the top structure of the utility model.

[0021] Description of the accompanying drawings:

[0022] 1. Shell, 11. Mounting plate,

[0023] 2. Installation assembly, 21. Fastening bolt, 22. First cylinder, 23. First spring, 24. Second cylinder, 25. Second spring, 26. Fastening nut, 27. Limiting piece, 28. Limiting platform,

[0024] 3. Mainboard, 31. Terminal blocks,

[0025] 4. Display panel, 41. Display screen, 42. Back cover,

[0026] 5. Cover shell, 51. Window,

[0027] 6. Screws; DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] See also Figure 1-4 As shown, the utility model is an external liquid level gauge, comprising: a housing 1, a cover 5, a mounting assembly 2, a main board 3, a display board 4 and a display screen 41,

[0031] The display screen 41 is fixed on the display panel 4. The display panel and the main board 3 are both mounted on the mounting plate 11 in the housing 1 through the mounting assembly 2. The mounting assembly is provided with at least 4 groups and symmetrically mounted at the edge of the display panel.

[0032] The mounting assembly 2 comprises a fastening bolt 21, a first cylinder 22, a first spring 23, a second cylinder 24, a second spring 25 and a fastening nut 26; wherein the fastening bolt 21 passes through the display panel 4, the first cylinder 22 and the first spring 23, the main board 3, the second cylinder 24 and the second spring 25, and the mounting plate in sequence and is mounted on the mounting plate 11 in cooperation with the fastening nut 26; the first cylinder 22 is supported between the display panel 4 and the main board 3, the second cylinder 24 is supported between the main board 3 and the mounting plate 11, and the lengths of the first cylinder 22 and the second cylinder 24 correspond to the heights and spacings of the display panel 4 and the main board 3; the mounting plate 11 is provided with threads that cooperate with the fastening bolt 21;

[0033] The first spring 23 and the second spring 25 are both sleeved on the fastening bolt 21 and are respectively located in the first cylinder 22 and the second cylinder 24. The first spring 23 and the second spring 25 are both set to a compressed state. A limiter 27 is installed in the upper part of the second cylinder 24. The two ends of the second spring 25 are respectively pressed between the main board 3 and the limiter 27. The first spring 23 is pressed between the display board 4 and the main board 3.

[0034] The cover shell is installed on the housing, and the display panel and the main board are covered between the cover shell and the housing, and the display screen corresponds to the display viewing window 51 on the cover shell.

[0035] The external liquid level gauge, wherein: the mounting plate is provided with a limit platform 28 for limiting the mounting position of the second cylinder.

[0036] The external liquid level gauge, wherein: when the length of the first cylinder 22 or the second cylinder 24 is insufficient, one or more adjusting pieces can be sleeved on the fastening bolt 21, and the outer diameter of the adjusting piece is larger than the inner diameter of the first cylinder 22 or the second cylinder 24 to compensate for the height difference of the first cylinder 22 or the second cylinder 24.

[0037] The external liquid level gauge, wherein: the adjusting member is a spring or a washer.

[0038] The external liquid level gauge, wherein: the main board is connected with a wiring terminal.

[0039] The external liquid level meter, wherein: the main board is provided with a power supply circuit, a sonar wave signal transmitting and receiving circuit, an MCU circuit, a current output circuit, a display circuit or an infrared receiving circuit.

[0040] Embodiment 1:

[0041] like Figure 1 As shown, the present embodiment provides an external liquid level gauge, comprising: a housing 1, a cover shell 5, a mounting assembly 2, a main board 3, a display panel 4 and a display screen 41. The display panel 4 and the main board 3 are both mounted on the mounting plate 11 in the housing 1 through the mounting assembly 2, the display screen 41 is fixed on the display panel 4, the cover shell is mounted on the housing 1 through a threaded connection, the display panel 4 and the main board 3 are wrapped between the cover shell and the housing 1, and the display screen 41 corresponds to the display viewing area window 51 on the cover shell. In the actual liquid level gauge structure, the cover shell 5 is mounted on the upper part of the housing 1, and the rear cover 42 is mounted on the lower part, which is convenient for operation.

[0042] like Figure 1 As shown, the mounting assembly 2 includes a fastening bolt 21 , a first cylinder 22 , a first spring 23 , a second cylinder 24 , a second spring 25 and a fastening nut 26 .

[0043] Among them, the fastening bolt 21 passes through the display panel 4, the first cylinder 22, the main board 3, and the second cylinder 24 in sequence and is installed on the mounting plate 11. At this time, the first cylinder 22 and the second cylinder 24 will directly support the display panel 4 and the main board 3 respectively, and the distance and position of the display panel 4 and the main board 3 are set by the length support of the first cylinder 22 and the second cylinder 24; in the production process, the first cylinder 22 and the second cylinder 24 of the specified length are cut to limit the installation position of the display panel 4 and the main board 3. The fastening nut 26 is installed at the end of the fastening bolt 21 and pressed against the bottom of the mounting plate 11, that is, the fastening bolt 21 fastens the first cylinder 22, the second cylinder 24, the main board 3 and the display panel 4 on the mounting plate 11. In the actual production process, the mounting plate 11 is provided with a thread that matches the fastening bolt 21, that is, the fastening bolt 21 can be fastened, and the fastening nut 26 makes the installation of each component more stable.

[0044] At the same time, the first spring 23 and the second spring 25 are both sleeved on the fastening bolt 21 and are respectively located in the first cylinder 22 and the second cylinder 24. The first spring 23 and the second spring 25 are both in a compressed state. When the fastening bolt 21 is not firmly fastened, or the length of the first cylinder 22 and the second cylinder 24 is inaccurate, the compressed state of the spring can still enable the first spring 23 and the second spring 25 to support and limit the main board 3 and the display board 4 to adjust the actual length, which is more flexible and practical. In this embodiment, the display board 4 and the main board 3 are installed on the housing 1 through multiple groups of mounting components 2, so that the installation of the main board 3 and the display board 4 is more accurate. At the same time, the first spring 23 and the second spring 25 in a compressed state make the installation of the main board 3 and the display board 4 more stable and balanced, greatly reducing the assembly error and deviation of the liquid level meter, and ensuring the appearance and use of the liquid level meter.

[0045] Furthermore, a limiting member 27 is provided in the second cylinder 24, and both ends of the second spring 25 abut against the main board 3 and the limiting member 27 respectively. The limiting member 27 can effectively reduce the use length of the second spring 25 and reduce the cost, and at the same time, can improve the overall installation stability.

[0046] A limiting platform 28 for limiting the installation position of the second cylinder 24 is provided on the installation plate 11, thereby improving the accuracy of the installation position of the second cylinder 24 and improving the overall installation efficiency and stability.

[0047] When the length of the first cylinder 22 or the second cylinder 24 is not enough, one or more adjusting parts can be mounted on the fastening bolt 21. The outer diameter of the adjusting parts is larger than the inner diameter of the first cylinder 22 or the second cylinder 24, which can make up for the height difference of the first cylinder 22 or the second cylinder 24. In this way, the mounting assembly 2 can be adapted to various installation requirements at various heights or positions, and has a wider range of applications.

[0048] In the actual liquid level meter, the main board 3 is connected to the wiring terminal 31, and the main board 3 is provided with a power supply circuit, a sonar signal transmitting and receiving circuit, an MCU circuit, a current output circuit, a display circuit and an infrared receiving circuit; it can be installed and used according to actual needs, which can greatly improve the detection accuracy of the liquid level meter.

[0049] The liquid level meter has a simple structure and is easy to operate. The main board 3 and the display board 4 can be accurately installed at the required positions. The liquid level meter is flexible, practical, safe, stable and has a wide range of uses.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An external liquid level gauge, comprising: The housing, cover, mounting assembly, mainboard, display panel and display screen are characterized in that: The display screen (41) is fixed on the display panel (4), and the display panel and the main board (3) are both mounted on a mounting plate (11) in the housing (1) via the mounting assembly (2), and at least four groups of the mounting assembly are provided and symmetrically mounted at the edge of the display panel; The mounting assembly (2) comprises a fastening bolt (21), a first cylinder (22), a first spring (23), a second cylinder (24), a second spring (25) and a fastening nut (26); wherein the fastening bolt (21) passes through the display panel (4), the first cylinder (22) and the first spring (23), the main board (3), the second cylinder (24) and the second spring (25), and the mounting plate in sequence and is mounted on the mounting plate (11) in cooperation with the fastening nut (26); the first cylinder (22) is supported between the display panel (4) and the main board (3); the second cylinder (24) is supported between the main board (3) and the mounting plate (11); the lengths of the first cylinder (22) and the second cylinder (24) correspond to the heights and spacings of the display panel (4) and the main board (3); and the mounting plate (11) is provided with a thread that is matched with the fastening bolt (21); The first spring (23) and the second spring (25) are both sleeved on the fastening bolt (21) and are respectively located in the first cylinder (22) and the second cylinder (24), and the first spring (23) and the second spring (25) are both set to a compressed state; a limiting member (27) is installed in the upper part of the second cylinder (24), and the two ends of the second spring (25) are respectively pressed between the main board (3) and the limiting member (27), and the first spring (23) is pressed between the display board (4) and the main board (3); The cover shell is installed on the housing, and the display panel and the main board are covered between the cover shell and the housing, and the display screen corresponds to the display viewing window (51) on the cover shell.

2. The external liquid level gauge according to claim 1, characterized in that: The mounting plate is provided with a limiting platform (28) for limiting the mounting position of the second cylinder.

3. The external liquid level gauge according to claim 1, characterized in that: When the length of the first cylinder (22) or the second cylinder (24) is insufficient, one or more adjusting pieces can be sleeved on the fastening bolt (21), and the outer diameter of the adjusting piece is larger than the inner diameter of the first cylinder (22) or the second cylinder (24), so as to compensate for the height difference of the first cylinder (22) or the second cylinder (24).

4. The external liquid level gauge as claimed in claim 3, characterized in that: The adjusting member is a spring or a washer.

5. The external liquid level gauge according to claim 1, characterized in that: The mainboard is connected with a connection terminal.

6. The external liquid level gauge according to claim 1, characterized in that: The main board is provided with a power supply circuit, a sonar wave signal transmitting and receiving circuit, an MCU circuit, a current output circuit, a display circuit or an infrared receiving circuit.

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