Liquid level observation device

Abstract

The utility model discloses a liquid level observation device which comprises a machine body, a control circuit board and a power supply device electrically connected with the control circuit board are arranged in the machine body; the observation table top is mounted on the machine body, an anti-corrosion light-transmitting plate and a searchlight are embedded in the observation table top, the searchlight is arranged below the anti-corrosion light-transmitting plate, and the searchlight is electrically connected with the control circuit board; and the sensor fixing seat is mounted on the observation platform surface, a photoelectric sensor is arranged in the sensor fixing seat, and the photoelectric sensor is electrically connected with the control circuit board through a wire hole in the observation platform surface. When a digestion tube is put in, the liquid level observation device can sense and trigger the searchlight to emit light through the photoelectric sensor, so that an operator is assisted in observing the liquid level in a wet digestion experiment, and the problem that an existing reagent is not easy to observe is solved.

Description

Technical Field

[0001] The utility model relates to a liquid level observation device, specifically, it refers to a device for assisting an operator to observe the liquid level in a wet digestion experiment. Background Art

[0002] In a wet digestion experiment, since various high-concentration acid reagents are used, the reaction vessel is generally an opaque polytetrafluoroethylene test tube. During the experiment, the operator usually needs to observe the remaining amount of the reagent in the test tube at irregular intervals to determine the next step of the experiment. The polytetrafluoroethylene test tube itself is made of opaque milky white plastic material, and it is generally difficult to directly observe the height of the internal reagent through the outer wall of the test tube. Moreover, in the experiment, the reaction that occurs is generally a high-temperature reaction, and there is a lot of smoke volatilized from the acid in the test tube, and it is not easy to observe the situation of the internal reagent from the bottle mouth. Therefore, there is a need for a device in this field that can assist in liquid level observation. Summary of the Utility Model

[0003] To solve the above problems, the purpose of the utility model is to provide a liquid level observation device for assisting an operator to observe the liquid level in a wet digestion experiment.

[0004] To achieve the above purpose, the utility model provides a liquid level observation device, which includes:

[0005] A body, inside which a control circuit board and a power supply device electrically connected to the control circuit board are arranged;

[0006] An observation tabletop, installed on the body, and an anti-corrosion light-transmitting plate is embedded in the observation tabletop and a searchlight is arranged below the anti-corrosion light-transmitting plate, wherein the searchlight is electrically connected to the control circuit board; and

[0007] A sensor fixing seat, installed on the observation tabletop, and a photoelectric sensor is arranged inside the sensor fixing seat, wherein the photoelectric sensor is electrically connected to the control circuit board through a wire hole on the observation tabletop.

[0008] In an embodiment of the utility model, the power supply device is a switching power supply.

[0009] In an embodiment of the utility model, the power supply device is a battery.

[0010] In an embodiment of the utility model, the battery is a common dry battery or a rechargeable battery.

[0011] In an embodiment of the utility model, the observation tabletop is made of PTFE material.

[0012] In an embodiment of the present utility model, the anti-corrosion light-transmitting plate is made of colorless transparent PC material and has anti-corrosion property; an anti-corrosion glue is also filled between the anti-corrosion light-transmitting plate and the observation table surface.

[0013] In an embodiment of the present utility model, the searchlight is a low-power LED lamp.

[0014] In an embodiment of the present utility model, the sensor fixing seat is made of PTFE material.

[0015] In an embodiment of the present utility model, the photoelectric sensor is a diffuse reflection type photoelectric sensor.

[0016] Compared with the prior art, the liquid level observation device provided by the present utility model can sense through the photoelectric sensor and trigger the searchlight to emit light when a digestion tube is placed, so as to assist the operator in observing the liquid level during the wet digestion experiment, solving the problem that the existing reagent is not easy to observe; when there is no digestion tube, the searchlight remains powered off, which can also save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of an embodiment of the present utility model;

[0019] Figure 2 It is Figure 1 A sectional schematic diagram along A-A;

[0020] Figure 3 It is Figure 1 A top view schematic diagram of;

[0021] Figure 4 It is Figure 1 A sectional schematic diagram along B-B;

[0022] Figure 5 It is a partial wiring schematic diagram of the control circuit board;

[0023] Figure 6 It is a schematic diagram of another embodiment of the present utility model;

[0024] Figure 7 It is Figure 6 A sectional schematic diagram along A-A.

[0025] Description of reference numerals: 101 - body; 102 - observation tabletop; 103 - sensor fixing seat; 104 - anti-corrosion light-transmitting plate; 105 - searchlight; 106 - photoelectric sensor; 107 - control circuit board; 108 - power supply device; 109 - digestion tube; 110 - switching power supply. Detailed implementation mode

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Figure 1 It is a schematic diagram of an embodiment of the present invention. Figure 2 is Figure 1 A sectional view along A-A. Figure 3 is Figure 1 A top view. Figure 4 is Figure 1 A sectional view along B-B. As Figures 1 to 4 shown, this embodiment provides a liquid level observation device, which includes:

[0028] A body 101, inside which a control circuit board 107 and a power supply device 108 electrically connected to the control circuit board 107 are provided;

[0029] In this embodiment, the power supply device 108 is a switching power supply.

[0030] In this embodiment, the power supply device 108 is a battery.

[0031] In this embodiment, the battery is an ordinary dry battery or a rechargeable battery.

[0032] An observation tabletop 102, installed on the body 101, and an anti-corrosion light-transmitting plate 104 is embedded in the observation tabletop 102 and a searchlight 105 is provided below the anti-corrosion light-transmitting plate 104, wherein the searchlight 105 is electrically connected to the control circuit board 107;

[0033] In this embodiment, the observation tabletop 102 is made of PTFE (Polytetrafluoroethylene) anti-corrosion material. Since PTFE is a known material, it will not be elaborated here.

[0034] In this embodiment, the anti-corrosion light-transmitting plate 104 is made of colorless transparent PC material and has anti-corrosion characteristics, and can be used normally in various acid gas environments. Since it can be made of commercially available known materials, it will not be elaborated here; an anti-corrosion glue is filled between the anti-corrosion light-transmitting plate 104 and the observation table top 102. The anti-corrosion glue can be selected from any existing commercially available products, so it will not be elaborated here. When installing the anti-corrosion light-transmitting plate 104 and the observation table top 102, it is necessary to apply anti-corrosion glue to play a sealing role to prevent acid gas from entering the interior of the machine body, thereby protecting the internal electronic devices.

[0035] In this embodiment, the searchlight 105 is a low-power LED lamp, which can be selected from commercially available products. Placing it under the anti-corrosion light-transmitting plate 104 can make its light pass through the anti-corrosion light-transmitting plate 104 and shine upward on the digestion tube (see Figure 6 ).

[0036] A sensor fixing seat 103 is installed on the observation table top 102, and a photoelectric sensor 106 is arranged in the sensor fixing seat 103. The photoelectric sensor 106 is electrically connected to the control circuit board 107 through the wire hole on the observation table top 102.

[0037] In this embodiment, the sensor fixing seat 103 is made of PTFE material, which is used to install the photoelectric sensor 106 and prevent the acid gas from corroding the photoelectric sensor 106.

[0038] In this embodiment, the photoelectric sensor 106 is a diffuse reflection type photoelectric sensor, which is used to output a control signal to the control circuit board 107 when it senses that an object is approaching.

[0039] Figure 5 For the wiring schematic diagram of the control circuit board part, as shown in Figure 5 shown, the searchlight 105 of this embodiment is connected to two corresponding wiring terminals of the control circuit board 107. For example, the black and red wirings in Figure 5 are respectively connected to a group of GND (ground) and +24V wiring terminals on the control circuit board 107; the photoelectric sensor 106 is connected to two corresponding wiring terminals of the control circuit board 107. For example, the red, black and blue wirings in Figure 5 are respectively connected to a group of +24V, trigger signal input (IN) and GND (ground) wiring terminals on the control circuit board 107; Figure 5For illustration purposes, the power supply device 108 is taken as an example of a switching power supply. When the power supply device 108 is a battery, the principle is the same, so it will not be elaborated here. The control circuit board 107 is connected to the switching power supply 110, such as a 24V switching power supply, and its output is 24V DC power. The control circuit board 107 controls the connection and disconnection between the searchlight 105 and the output terminal of the switching power supply 110 according to the trigger signal. When the trigger signal input (IN) receives the trigger signal, the output terminal of the switching power supply 110 is conducted with the searchlight 105, otherwise it remains disconnected.

[0040] Figure 6 Schematic diagram of another embodiment of the present utility model, Figure 7 is Figure 6 Schematic cross-sectional view along A-A, please refer to Figures 1 to 7 This embodiment is used to illustrate the working process of the present utility model when placed in the digestion tube. When no object is placed on the observation table 102, the photoelectric sensor 106 will not emit any signal. At this time, the control circuit board 107 defaults to disconnect the searchlight 105 and the power supply device 108, that is, the searchlight 105 and the power supply device 108 are in an open circuit state; when the digestion tube 109 is placed on the observation table 102, the photoelectric sensor 106 in the sensor fixing seat 103 can sense the approach of the digestion tube 109, then the photoelectric sensor 106 will be triggered to emit a trigger signal (which can be, for example, a high-level signal). After the control circuit board 107 receives the trigger signal of the photoelectric sensor 106, it will connect the searchlight 105 and the power supply device 108 (i.e., in a conducting state). At this time, after the searchlight 105 is powered on, it will be lit, and the light shines upward through the anti-corrosion light-transmitting plate 104 on the observation table 102 and is conducted to the reagent inside the digestion tube 109 through the bottom of the digestion tube 109. Then the experimenter can clearly observe the remaining amount of the reagent in the digestion tube 109 from the outside of the digestion tube 109.

[0041] The liquid level observation device provided by the present utility model can sense through the photoelectric sensor and trigger the searchlight to emit light when a digestion tube is placed, so as to assist the operator in observing the liquid level in the wet digestion experiment, and solves the problem that the existing reagent is not easy to observe; and when there is no digestion tube, the searchlight remains powered off, which can also save energy.

[0042] Those of ordinary skill in the art can understand that the drawings are only schematic diagrams of one embodiment, and the modules or processes in the drawings are not necessarily essential for implementing the present utility model.

[0043] Those of ordinary skill in the art can understand that the modules in the device in the embodiment can be distributed in the device of the embodiment according to the description of the embodiment, or can be correspondingly changed to be located in one or more devices different from the present embodiment. The modules of the above embodiment can be combined into one module, or can be further split into multiple sub-modules.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid level observation device, characterized in that: include: A body, in which a control circuit board and a power supply device electrically connected to the control circuit board are arranged; an observation platform, mounted on the machine body, wherein an anti-corrosion light-transmitting plate and a searchlight disposed below the anti-corrosion light-transmitting plate are embedded in the observation platform, wherein the searchlight is electrically connected to the control circuit board; and A sensor fixing seat is installed on the observation table, and a photoelectric sensor is arranged in the sensor fixing seat, wherein the photoelectric sensor is electrically connected to the control circuit board through the wire hole on the observation table.

2. The liquid level observation device according to claim 1, characterized in that: The power supply device is a switching power supply.

3. The liquid level observation device according to claim 1, characterized in that: The power supply device is a battery.

4. The liquid level observation device according to claim 3, characterized in that: The battery is a common dry cell or a rechargeable battery.

5. The liquid level observation device according to claim 1, characterized in that: The observation table surface is made of PTFE material.

6. The liquid level observation device according to claim 1, characterized in that: The anti-corrosion light-transmitting plate is made of colorless and transparent PC material and has anti-corrosion properties.

7. The liquid level observation device according to claim 1, characterized in that: Anti-corrosion glue is also filled between the anti-corrosion light-transmitting plate and the observation platform.

8. The liquid level observation device according to claim 1, characterized in that: The searchlight is a low-power LED lamp.

9. The liquid level observation device according to claim 1, characterized in that: The sensor fixing seat is made of PTFE material.

10. The liquid level observation device according to claim 1, characterized in that: The photoelectric sensor is a diffuse reflection type photoelectric sensor.

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