Liquid level monitoring device

Abstract

The utility model discloses a liquid level monitoring device which comprises an installation frame, a plurality of flow guide tables are arranged on the outer side wall of the installation frame in the length direction of the installation frame, metal contacts vertically extending downwards are embedded in the bottoms of the flow guide tables, and the installation frame is provided with a closed containing cavity. Electrodes which are in one-to-one correspondence with the metal contacts and are electrically connected with the metal contacts are accommodated in the accommodating cavity, the electrodes are in contact with detected liquid through the metal contacts, the top of each flow guide table is provided with an inclined surface which is inclined downwards, and a liquid inflow channel is defined between every two flow guide tables. A plurality of electrodes and metal contacts which are distributed up and down are adopted to monitor the liquid level, water is used as an electric conductor, conduction of the electrodes at different positions is achieved according to different water level heights, and therefore the liquid level of measured liquid can be known, and compared with a traditional liquid level monitoring device, the cost is lower, and meanwhile the liquid level monitoring accuracy is improved. And the overall measurement precision can be prevented from being interfered by dirt in the liquid, the reliability is high, and the overall maintenance frequency can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid level detection, in particular to a liquid level monitoring device. Background Art

[0002] The surface height and position of liquids accumulated in various containers and within a certain space are called liquid levels. Liquid level monitoring is of great significance to human life and production. Common scenarios requiring liquid level monitoring include groundwater level monitoring, liquid storage tank level monitoring, fire water tank level monitoring, sewage and rainwater well level monitoring, etc. Among them, effective liquid level monitoring of sewage and rainwater wells can provide effective safety precautions during flood season and rainy season.

[0003] Because manholes are not deep, float-type or pressure-type level sensors are currently commonly used to measure liquid levels. The float in a float-type level sensor can often become stuck with floating objects in the water, causing inaccurate measurements. Furthermore, waterproofing the accompanying electronic transmitter is a challenge. The micropores in the metal housing of a pressure-type level sensor can also become clogged with impurities over time, leading to inaccurate measurements.

[0004] In view of this, a liquid level monitoring device is proposed. Utility Model Content

[0005] The purpose of the present utility model is to provide a liquid level monitoring device in order to solve the above-mentioned problems.

[0006] The technical solution adopted by the present utility model is as follows: a liquid level monitoring device, including a mounting frame, wherein the outer wall of the mounting frame is provided with multiple guide platforms along its length direction, and the bottom of the guide platform is embedded with metal contacts extending vertically downward. The mounting frame has a closed accommodating cavity, and the accommodating cavity contains electrodes corresponding to and electrically connected to the multiple metal contacts one by one, and the electrodes are in contact with the liquid to be measured through the metal contacts.

[0007] In a preferred embodiment, a downwardly inclined surface is provided on the top of the guide platform, and a liquid inflow channel is formed between two guide platforms.

[0008] In a preferred embodiment, a slot is provided in the flow guide platform to accommodate the electrode, and the connection between the metal contact and the flow guide platform is filled with an insulating sealing material.

[0009] In a preferred embodiment, a junction box electrically connected to the electrodes is installed on the top of the mounting frame, and a single-chip microcomputer and an RS485 transmission chip are also provided inside the junction box.

[0010] In a preferred embodiment, a bubble level is embedded in the center of the top of the housing of the junction box.

[0011] In a preferred embodiment, the guide platform and the mounting frame are integrally formed.

[0012] In a preferred embodiment, the metal contacts are made of conductive material.

[0013] In a preferred embodiment, a plurality of mounting ears with through holes are symmetrically provided on both sides of the mounting frame.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] 1. In the utility model, multiple electrodes and metal contacts distributed vertically are used to monitor the liquid level. Water is used as a conductor, and the conduction of electrodes at different positions is achieved according to the different water levels, so that the liquid level of the measured liquid can be known. Compared with traditional liquid level monitoring devices, the cost is lower and the overall measurement accuracy can be prevented from being disturbed by dirt in the liquid, and the reliability is high.

[0016] 2. In the present invention, metal contacts are used to achieve contact with the liquid being measured. At the same time, the metal contacts are set vertically downward to prevent dirt in the sewage from adhering to the electrodes and the metal contacts, thereby avoiding false detection caused by electrode short circuits.

[0017] 3. In the present invention, a bubble level is designed on the top of the junction box, which can help the installer know the levelness of the current installation and avoid affecting the accuracy of subsequent measurements due to the overall installation tilt. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the partial cross-sectional plan structure of the mounting frame in the present invention.

[0020] Markings in the figure: 1-mounting frame, 101-accommodating cavity, 2-mounting ear, 3-junction box, 4-flow guide table, 5-bubble level, 6-insulating sealing material, 7-metal contact, 8-electrode. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] Reference Figure 1-2A liquid level monitoring device includes a mounting frame 1, wherein the outer wall of the mounting frame 1 is provided with a plurality of guide platforms 4 along its length direction, and a metal contact 7 extending vertically downward is embedded at the bottom of the guide platform 4. The mounting frame 1 has a closed accommodating cavity 101, and the accommodating cavity 101 contains electrodes 8 corresponding to and electrically connected to the plurality of metal contacts 7. The electrodes 8 are in contact with the liquid to be measured through the metal contacts 7. A junction box 3 electrically connected to the electrodes 8 is installed on the top of the mounting frame 1. The liquid level is monitored by using a plurality of electrodes 8 and metal contacts 7 distributed up and down, and water is used as a conductor. By utilizing different water level heights to achieve conduction of electrodes 8 at different positions, the liquid level of the measured liquid can be known (similar to the current electrode liquid level gauge). The whole is equivalent to an electronic liquid level scale. Compared with traditional liquid level monitoring devices, it has lower costs and can prevent the overall measurement accuracy from being disturbed by dirt in the liquid. It has high reliability. At the same time, the metal contact 7 is utilized to achieve contact with the measured liquid. At the same time, the metal contact 7 is set vertically downward, which can prevent dirt in the sewage from adhering to the electrode 8 and the metal contact 7, thereby avoiding causing a short circuit of the electrode 8 and causing false detection.

[0023] The electrode 8 can be a hard solid electrode or a soft wire, and the number and spacing of the metal contacts 7 can be adjusted according to different application scenarios.

[0024] Furthermore, a downwardly inclined slope is provided on the top of the guide platform 4, and a liquid inflow channel is formed between the two guide platforms 4. The inclined surface of the guide platform 4 can prevent liquid from accumulating above the guide platform 4. At the same time, large dirt can be isolated outside the liquid inflow channel between the two guide platforms 4, thereby preventing large dirt from affecting the overall measurement.

[0025] Furthermore, a slot is opened in the guide platform 4 to accommodate the electrode 8, and the connection between the metal contact 7 and the guide platform 4 is filled with an insulating sealing material 6. The insulating sealing material 6 is preferably epoxy resin, but is not limited here. The connection between the metal contact 7 and the guide platform 4 is waterproof and sealed by the insulating sealing material 6.

[0026] Furthermore, a single chip microcomputer and an RS485 transmission chip are also provided inside the junction box 3 .

[0027] Furthermore, a bubble level 5 is embedded in the center of the top of the shell of the junction box 3. The bubble level 5 is designed on the top of the junction box to facilitate the installer to know the current installation level and avoid affecting the accuracy of subsequent measurements due to the overall installation tilt.

[0028] Furthermore, the guide platform 4 and the mounting frame 1 are integrally formed parts, which can save overall manufacturing costs and processes while ensuring the overall connection strength. The mounting frame 1 can be made of stainless steel or PVC, which is not limited here.

[0029] Furthermore, the metal contact 7 is made of a conductive material, and the metal contact 7 can be made of copper or stainless steel, which is not limited here.

[0030] Furthermore, a plurality of mounting ears 2 with through holes are symmetrically provided on both sides of the mounting frame 1, and the mounting ears 2 can be fixed to the measured position (such as a sewage well, rainwater well, etc.) through expansion bolts or other fixing parts.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A liquid level monitoring device, characterized in that: It includes a mounting frame, the outer wall of the mounting frame is provided with multiple guide platforms along its length direction, the bottom of the guide platform is embedded with metal contacts extending vertically downward, the mounting frame has a closed accommodating cavity, the accommodating cavity contains electrodes corresponding to and electrically connected to the multiple metal contacts, and the electrodes are in contact with the liquid to be measured through the metal contacts.

2. A liquid level monitoring device according to claim 1, characterized in that: A downwardly inclined surface is provided on the top of the guide platform, and a liquid inflow channel is formed between the two guide platforms.

3. A liquid level monitoring device according to claim 1, characterized in that: The guide platform is provided with a slot for the electrode to extend therein, and the connection between the metal contact and the guide platform is filled with an insulating sealing material.

4. A liquid level monitoring device according to claim 1, characterized in that: A junction box electrically connected to the electrodes is installed on the top of the mounting frame, and a single chip microcomputer and an RS485 transmission chip are also arranged inside the junction box.

5. A liquid level monitoring device according to claim 4, characterized in that: A bubble level is embedded at the center of the top of the shell of the junction box.

6. A liquid level monitoring device according to claim 1, characterized in that: The guide platform and the mounting frame are integrally formed.

7. The liquid level monitoring device according to claim 1, characterized in that: The metal contacts are made of conductive material.

8. The liquid level monitoring device according to claim 1, characterized in that: A plurality of mounting ears with through holes are symmetrically provided on both sides of the mounting frame.

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