Visual liquid level meter with analog quantity output function

Abstract

The utility model discloses a visual liquid level meter with an analog quantity output function, the visual liquid level meter comprises a protective shell assembly, a liquid passing assembly and a liquid level detection assembly, the protective shell assembly comprises a U-shaped shell and seat bodies arranged at the upper end part and the lower end part of the U-shaped shell; the liquid passing assembly comprises a liquid passing pipe and two liquid passing bolts, and liquid can enter the liquid passing pipe through the liquid passing bolts and the seat body; the liquid level detection assembly comprises a Hall probe rod and a strong magnetic floater, and the strong magnetic floater is arranged in the liquid passing pipe and can float along with liquid; the Hall probe rod is arranged between the upper seat body and the lower seat body and comprises a protective shell, a circuit board arranged in the protective shell and a Hall sensor integrated unit arranged on the circuit board, Hall signals are converted into analog quantity signals through a circuit conversion module to be output, and the liquid level meter can be visually observed and can achieve data transmission of liquid level analog quantity through an upper computer. And meanwhile, the protection level is high, the measurement precision is high, and the anti-interference capability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level measurement application, in particular to a visual liquid level meter with an analog output function. Background Art

[0002] Liquid level gauges are widely used in the fields of machinery, electricity, pharmaceuticals, chemicals, etc. Commonly used visual level gauges are usually float-type level gauges, and those that can read liquid level information remotely are usually probe-type level gauges. Liquid level gauges that can read liquid level information both visually and remotely are commonly used magnetic flap-type level gauges on the market. When the liquid level in the measured container rises or falls, the magnetic float in the body tube of the liquid level gauge also rises or falls accordingly. The permanent magnet in the float is transmitted to the magnetic flip column indicator through magnetic coupling, driving the red and white flip columns to flip 180°. When the liquid level rises, the flip column changes from white to red, and when the liquid level drops, the flip column changes from red to white. The red and white junction of the indicator is the actual height of the liquid level inside the container, thereby realizing the indication of the liquid level. Through the even distribution of several dry reeds, the switch quantity generated by the action of the strong magnetic float and the dry reed is used to transmit the liquid level information to the remote. The main shortcomings of the magnetic flap level gauge are as follows: low accuracy (the common accuracy is about 10mm), inconvenient to use in a large range, the magnetic flap column needs to be cleaned regularly, otherwise the accuracy will be affected, the display panel is narrow, the farsightedness or side vision effect is not good, the protection level is low, water vapor, dust accumulation, and strong magnetism will affect its normal operation, and the application scenarios are limited, especially it cannot be used for the measurement of low conductivity liquids (such as petroleum products) or liquids with large bubbles.

[0003] Therefore, it is necessary to design a liquid level meter that can read liquid level information both visually and remotely, has high accuracy, does not require cleaning, and has unlimited application scenarios. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a visual liquid level gauge with analog output function, which can not only visually observe but also realize data transmission of liquid level analog quantity, and at the same time has a high protection level, high measurement accuracy and strong anti-interference ability.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A visual liquid level meter with analog output function, comprising:

[0007] A protective shell assembly extending in the up-down direction; the protective shell assembly comprises a U-shaped shell and a seat body provided at the upper and lower ends of the U-shaped shell;

[0008] The liquid passing assembly comprises a liquid passing pipe which is arranged in the U-shaped groove of the U-shaped shell and has two ends mounted on the corresponding end seats, two liquid passing bolts and a sealing member mounted on the two seats, and the liquid can enter the liquid passing pipe through the liquid passing bolts and the seat;

[0009] The liquid level detection component includes a Hall probe and a strong magnetic float. The strong magnetic float is arranged in a liquid pipe and can float with the liquid. The Hall probe is arranged between the upper and lower seats, and includes a protective shell, a circuit board arranged in the protective shell, and a Hall sensor integrated unit arranged on the circuit board. The Hall signal is converted into an analog signal output by a circuit conversion module.

[0010] Furthermore, the seat body is provided with a first liquid through hole extending along the axial direction of the liquid through pipe, and a mounting hole arranged through the seat body in a direction perpendicular to the first liquid through hole. A cross-shaped or T-shaped second liquid through hole is provided in the liquid through bolt, and the inlet of the second liquid through hole is connected to the first liquid through hole. The liquid through bolt passes through the U-shaped shell and the mounting hole in turn and is tightened by a locking nut.

[0011] Furthermore, the Hall sensor integrated unit includes a plurality of Hall sensors, and the Hall sensor is at least one of a switch type Hall sensor, a linear Hall sensor, and a proximity type Hall sensor.

[0012] Furthermore, the strong magnetic float comprises a floating body, wherein the floating body is provided with at least three chambers, namely, one large chamber and two small chambers, and magnets are provided in two small chambers.

[0013] Furthermore, the color of the peripheral surface of the float forms a contrast with the color of the liquid.

[0014] Furthermore, the magnet is a cylindrical magnet.

[0015] Furthermore, sealing elements are provided between the liquid-through bolt and the seat body, and between the seat body and the liquid-through pipe.

[0016] Furthermore, an observation window is provided on the side wall of the U-shaped shell.

[0017] Furthermore, the detection accuracy of the visual liquid level gauge is 3-10mm.

[0018] Beneficial effects:

[0019] As described above, the visual liquid level meter with analog output function of the utility model has the following beneficial effects:

[0020] Through the above inventions, at least the following beneficial effects are achieved:

[0021] First, the liquid level meter of the utility model includes a protective shell component, a liquid flow component, and a liquid level detection component. The liquid flow component is installed in the protective shell component, and the liquid can flow in the liquid flow component. The liquid level detection component is used to detect the liquid level and output the liquid level information. This solves the disadvantage that the visual liquid level meter in the prior art does not have an analog output function.

[0022] Secondly, in the strong magnetic float of the utility model, the color of the float can be designed to form a contrast according to the color of the measured liquid, with good visual effect and strong anti-interference ability.

[0023] Thirdly, the liquid level meter of the utility model can measure a variety of liquids including oil, and is basically not affected by the dielectric constant of the oil.

[0024] Fourthly, the Hall sensor integrated unit in the utility model includes a plurality of Hall sensors, and the Hall sensor is at least one of a switch type Hall sensor, a linear Hall sensor, and a proximity type Hall sensor. The accuracy can be further improved by using different types of Hall sensors in combination with each other, or a customized solution can be provided according to specific measurement requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is one of the structural diagrams of the liquid level meter.

[0027] Figure 2 This is the second structural diagram of the liquid level meter.

[0028] Figure 3 yes Figure 2 Enlarged cross-sectional view at CC in the middle.

[0029] Figure 4 It is a front cross-sectional view of the level gauge.

[0030] Figure 5 It is a cross-sectional view of a strong magnetic float.

[0031] Figure 6 This is the structural diagram of the Hall probe.

[0032] Figure 7 This is the internal structure diagram of the Hall probe.

[0033] Graphic markings: 1. Liquid-through bolt, 2. U-shaped shell, 201. Observation window, 3. Connector, 4. Hall probe, 401. Cable, 402. Protective shell, 403. Flange, 404. Hall sensor integrated unit, 405. Fixed end, 5. Liquid-through tube, 6. Strong magnetic float, 601. Float, 602. Magnet, 7. Sealing body, 8. Sealing ring, 9. Locking nut. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it is necessary to understand that the terms "upper" and "lower" etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the scope of protection of the present invention.

[0036] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0037] This utility model provides a visual level gauge with analog output function, please refer to Figures 1 to 7 The visual liquid level meter includes a protective shell component, a liquid flow component, and a liquid level detection component. The liquid flow component is installed in the protective shell component, and liquid can enter the liquid flow component. The liquid level detection component is used to detect the liquid level and output the liquid level information, so that the liquid level information can be directly read visually or remotely. Each component is described in detail below.

[0038] <Protective case components>

[0039] Please refer to Figure 1 and Figure 4The protective shell assembly extends in the up-down direction; the protective shell assembly includes a U-shaped shell 2 and a seat body 7 arranged at the upper and lower ends of the U-shaped shell 2; the seat body 7 is provided with a first liquid through hole extending along the axial direction of the U-shaped shell 2, and a mounting hole arranged in a direction perpendicular to the first liquid through hole and penetrating the seat body 7.

[0040] Preferably, a through groove is provided on the bottom wall of the U-shaped housing 2, and an observation window 201 made of a transparent material is installed on the through groove.

[0041] <Liquid Flow Components>

[0042] The liquid passing assembly includes a liquid passing tube 5 which is arranged in the U-shaped groove of the U-shaped housing 2 and whose two ends are mounted on the corresponding end seats 7, and two liquid passing bolts 1 which are mounted on the two seats 7. The liquid passing bolts 1 are provided with a cross-shaped or T-shaped second liquid passing hole, and the inlet of the second liquid passing hole is connected with the first liquid passing hole. The liquid passing bolts 1 pass through the U-shaped housing 2 and the mounting hole in sequence and are fastened by the locking nuts 9. Liquid can enter the liquid passing tube 5 through the liquid passing bolts 1 and the seats 7.

[0043] Specifically, the cross-section of the liquid passage 5 is not limited, and may be circular or elliptical.

[0044] Preferably, sealing members are provided between the liquid-through bolt 1 and the seat body 7 and between the seat body 7 and the liquid-through pipe 5. Specifically, the sealing member is a sealing ring 8 to ensure the sealing effect of the liquid level meter.

[0045] <Liquid level detection component>

[0046] The liquid level detection component includes a Hall probe 4 and a strong magnetic float 6.

[0047] Please refer to Figure 3 and Figure 5 The strong magnetic float 6 is arranged in the liquid pipe 5, and the strong magnetic float 6 includes a float 601. The float 601 has three chambers, one large and two small, and magnets 602 are arranged in the two small chambers.

[0048] Preferably, the color of the float 601 can be designed to form a contrast according to the color of the measured liquid, with good visual effect and strong anti-interference ability.

[0049] The Hall probe 4 includes a protective shell 402, a circuit board (not shown in the figure, with a battery) arranged in the protective shell 402, and a Hall sensor integrated unit 404 arranged on the circuit board and capable of detecting the position of the strong magnetic float 6. The circuit board is electrically connected to the circuit conversion module through the connector 3 and the cable 401, and the Hall signal (i.e., the signal collected by the Hall sensor integrated unit 404) is converted into an analog signal output by the circuit conversion module.

[0050] The Hall sensor integration unit 404 includes a plurality of Hall sensors, and the Hall sensor is at least one of a switch type Hall sensor, a linear Hall sensor, and a proximity type Hall sensor.

[0051] The following is a detailed description of the production process of the liquid level meter. Figure 5 After making a strong magnetic float 6 and passing the air-tight test, install the strong magnetic float 6 into the liquid tube 5. Install the sealing ring 8 into the groove structure of the upper and lower seat bodies 7 and brush it with industrial glue. Glue the upper and lower seat bodies 7 to the two ends of the liquid tube 5 respectively, and proceed to the next step of assembly after the sealing test is qualified. Insert the protective shell 402 of the Hall probe 4 into the preset holes of the upper and lower seat bodies 7 respectively and glue them in place. Place the circuit board with the Hall sensor integrated unit 404 in the protective shell 402. At this time, the fixed end 405 is fixed with the preset mounting hole of the upper seat body, and the flange 403 is glued and fixed to the lower seat body. After installing the observation window 201 on the U-shaped shell 2, fix it to the upper seat body. After putting the sealing ring 8 on the upper and lower liquid bolts 1 respectively, install them into the upper and lower seat bodies 7, and install the matching locking nuts 9, and finally insert the connector 3 into the lower seat body.

[0052] When in use, loosen the locking nut 9, tighten the upper and lower liquid-passing bolts 1 respectively and seal them into the measured pipeline, and then tighten the locking nut 9. Connect the wires of the circuit conversion module to the connector 3.

[0053] Specifically, the detection accuracy of the visual liquid level gauge is 3-10 mm.

[0054] The above is a detailed introduction to a visual level meter with analog output function provided by the utility model. This article uses specific examples to illustrate the principle and specific implementation of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this field, any simple modification, equivalent changes and modifications made to the above examples based on the technical essence of the utility model fall within the protection scope of the utility model.

Claims

1. A visual level gauge with analog output function, characterized in that: include: A protective shell assembly extending in the up-down direction; the protective shell assembly comprises a U-shaped shell and a seat body provided at the upper and lower ends of the U-shaped shell; The liquid passing assembly comprises a liquid passing pipe which is arranged in the U-shaped groove of the U-shaped shell and has two ends mounted on the corresponding end seats, two liquid passing bolts and a sealing member mounted on the two seats, and the liquid can enter the liquid passing pipe through the liquid passing bolts and the seat; The liquid level detection component includes a Hall probe and a strong magnetic float. The strong magnetic float is arranged in a liquid pipe and can float with the liquid. The Hall probe is arranged between the upper and lower seats, and includes a protective shell, a circuit board arranged in the protective shell, and a Hall sensor integrated unit arranged on the circuit board. The Hall signal emitted by the Hall sensor integrated unit is converted into an analog signal output by a circuit conversion module.

2. A visual level gauge with analog output function according to claim 1, characterized in that: The seat body is provided with a first liquid through hole extending along the axial direction of the liquid through pipe, and a mounting hole arranged through the seat body in a direction perpendicular to the first liquid through hole. A cross-shaped or T-shaped second liquid through hole is provided in the liquid through bolt, and the inlet of the second liquid through hole is connected to the first liquid through hole. The liquid through bolt passes through the U-shaped shell and the mounting hole in turn and is tightened by a locking nut.

3. A visual level gauge with analog output function according to claim 1, characterized in that: The Hall sensor integrated unit includes a plurality of Hall sensors, and the Hall sensor is at least one of a switch type Hall sensor, a linear Hall sensor, and a proximity type Hall sensor.

4. A visual level gauge with analog output function according to claim 1, characterized in that: The strong magnetic float comprises a float, wherein three chambers, one large and two small, are arranged in the float, and magnets are arranged in the two small chambers.

5. A visual level gauge with analog output function according to claim 4, characterized in that: The color of the peripheral surface of the float forms a contrast with the color of the liquid.

6. A visual level gauge with analog output function according to claim 4, characterized in that: The magnet is a cylindrical magnet.

7. A visual level gauge with analog output function according to claim 1, characterized in that: Sealing elements are provided between the liquid-through bolt and the seat body, and between the seat body and the liquid-through pipe.

8. A visual level gauge with analog output function according to claim 1, characterized in that: An observation window is provided on the side wall of the U-shaped shell.

9. A visual level gauge with analog output function according to claim 1, characterized in that: The detection accuracy of the visual liquid level gauge is 3-10mm.

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