Integrated Structure of TDS Water Quality Detector with Thermistor

Abstract

The present invention discloses an integrated structure of a TDS water quality detector integrated with a thermistor, which includes an installation shell, two electrode probes oppositely arranged at the bottom of the installation shell. Each electrode probe is a hollow metal shell, and each electrode probe is electrically connected to a first lead respectively. A thermistor is arranged in the inner cavity of one of the electrode probes. A second lead is provided on the lead of the thermistor, and the second lead extends out of the electrode probe. The thermistor is encapsulated in the electrode probe through a sealing resin. Since the thermistor is encapsulated in the electrode probe to form an integrated structure, the overall structure is compact, occupies a small space, and there is no need to consider the matching installation of the thermistor with the drinking water equipment, which is convenient for product assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and particularly to an integrated structure of a TDS water quality detector integrating a thermistor. Background Art

[0002] With the development of social economy, scientific progress and the improvement of people's living standards, environmental pollution is becoming more and more serious. Among them, water environmental pollution is the most serious. For the health of human beings themselves, water quality issues have received more attention. Therefore, it is very meaningful to test the water quality of drinking water. TDS is the abbreviation of total dissolved solids in English, which is interpreted as total dissolved solids in Chinese. It is defined as the total amount of various dissolved mineral salts in water, which includes the total amount of inorganic salts and organic matters. The measurement unit is milligram per liter (1mg / L = 1ppm), which indicates how many milligrams of total dissolved solids are dissolved in 1 liter of water, or the total amount of ions in 1 liter of water. Therefore, detecting the TDS value in water is one of the very important parameters for judging the quality of water.

[0003] The current TDS detection component mainly includes a connector 1', a thermistor 2' and a TDS detector 3' arranged separately. The thermistor 2' and the TDS detector 3' are respectively connected to the connector 1' through wires 4' (see Figure 4 shown); when in use, two probes of the TDS detector are inserted into water, and the conductivity of the aqueous solution between the two probes is detected by energization. Since the conductivity of water in the same environment changes with temperature, when detecting the TDS value of water quality, the thermistor can detect the temperature and correct the deviation of the TDS value of water caused by temperature change.

[0004] In order to make the structure of the TDC detection component more compact and facilitate the assembly and detection of the TDS water quality detector and the thermistor, a structure of an integrated combination of the TDS water quality detector and the thermistor is urgently needed. Summary of the Invention

[0005] In view of the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide an integrated structure of a TDS water quality detector integrating a thermistor, aiming to make the overall structure more compact and enhance the adaptability to the product.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An integrated structure of a TDS water quality detector integrating a thermistor, comprising a mounting shell, two electrode probes oppositely arranged at the bottom of the mounting shell, each electrode probe being a hollow metal shell, each electrode probe being electrically connected to a first lead respectively, a thermistor being arranged in the inner cavity of one of the electrode probes, a second lead being provided on the lead of the thermistor, the second lead extending out of the electrode probe, and the thermistor being encapsulated in the electrode probe by a sealing resin.

[0008] Each of the electrode probes has a single-end opening, and comprises a connecting pipe and a probe which are vertically arranged and connected to each other, the thermistor being arranged in the probe, two through holes for the probe to pass through being formed in the bottom surface of the mounting shell, and a first sealing ring being arranged in each through hole.

[0009] Both the connecting pipe and the probe are circular tubes, the diameter of the connecting pipe being larger than that of the probe, the connecting pipe being electrically connected to the first lead through a conductive sheet, the conductive sheet comprising a circular ring, a connecting part and a riveting part which are connected in sequence; the riveting part is connected to the first wire by a riveting method, and the circular ring is sleeved on the connecting pipe.

[0010] The connecting part is bent into an L shape.

[0011] The mounting shell comprises a mounting base and a threaded connection part which are integrally arranged, the threaded connection part being located at the bottom of the mounting base; an external thread being provided on the outer wall of the threaded connection part; a groove for mounting the conductive sheet being formed in the top of the mounting base, and the through hole being communicated with the groove.

[0012] A second sealing ring is sleeved on the threaded connection part.

[0013] The filling depth of the sealing resin is flush with the upper end surface of the electrode probe.

[0014] Beneficial effects:

[0015] The present invention provides an integrated structure of a TDS water quality detector integrating a thermistor. Compared with the split structure of the TDS water quality detector and the thermistor in the prior art, the thermistor is encapsulated in the electrode probe to form an integrated structure, so the overall structure is compact, occupies a small space, and there is no need to consider the matching installation of the thermistor and the drinking water equipment, which is convenient for product assembly. Description of the drawings

[0016] Figure 1 It is a schematic structural diagram of the integrated structure of the TDS water quality detector integrating a thermistor provided by the present invention.

[0017] Figure 2 It is a front view of the integrated structure of the TDS water quality detector integrating a thermistor provided by the present invention.

[0018] Figure 3A top view of the conductive sheet in the integrated structure of the TDS water quality detector with integrated thermistor provided by the present invention.

[0019] Figure 4 It is a structural schematic diagram of an existing TDC detection component. DETAILED DESCRIPTION

[0020] The present invention provides an integrated structure of a TDS water quality detector with an integrated thermistor. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. 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 scope of protection of the present invention.

[0021] See also Figure 1 - Figure 2 The present invention provides an integrated structure of a TDS water quality detector with an integrated thermistor, including a mounting shell 1, two electrode probes 2 relatively arranged at the bottom of the mounting shell, each electrode probe 2 is a hollow metal shell, each electrode probe 2 is electrically connected to a first lead 3, a thermistor 4 is arranged in the inner cavity of one of the electrode probes 2, a second lead 5 is arranged on the pin of the thermistor 4, the second lead 5 extends out of the electrode probe, and the thermistor 4 is encapsulated in the electrode probe by a sealing resin 6.

[0022] When working, voltage is applied to the electrode probes, so that the two electrode probes are respectively a positively charged electrode and a negatively charged electrode. The positively charged ions in the water (such as sodium ions, calcium ions, magnesium ions, hydrogen ions, etc.) move toward the negatively charged electrode, and the negatively charged ions (such as chloride ions, sulfate ions, bicarbonate ions) move toward the positively charged electrode. The movement of the ions forms a current, which outputs different signals through circuit analysis for the control system of the drinking water equipment to judge the purity of the water. The thermistor encapsulated in one of the electrode probes can detect the water temperature through the heat conduction of the electrode probe, and correct the TDS value deviation of the water caused by temperature changes. Compared with the split structure of the TDS water quality detector and thermistor in the prior art, the integrated structure of the TDS water quality detector integrated with the thermistor provided by the present invention is compact and occupies little space. It does not need to consider the matching installation of the thermistor and the drinking water equipment, which is convenient for product assembly.

[0023] Specifically, each of the electrode probes 2 is single-ended and includes a vertically arranged and interconnected pipe 2.1 and a probe 2.2. The thermistor is arranged in the probe. The bottom surface of the mounting shell 1 is provided with two through holes 1.3 for the probes to pass through. A first sealing ring 7 is provided in each through hole to prevent water from entering the shell through the through hole and causing an electrical short circuit, thereby ensuring the dryness of the inside of the shell.

[0024] Further, both the adapter 2.1 and the probe 2.2 are circular tubes. The diameter of the adapter 2.1 is greater than that of the probe 2.2. The adapter 2.1 is electrically connected to the first lead 3 through a conductive sheet 8, and the conductive sheet 8 includes a circular ring 8.1, a connecting portion 8.2, and a riveting portion 8.3 that are connected in sequence (see Figure 3 as shown); the riveting portion 8.3 is connected to the first wire 3 by riveting, and the circular ring 8.1 is sleeved on the adapter.

[0025] Specifically, the mounting shell 1 includes a mounting base 1.1 and a threaded connection portion 1.2 that are integrally provided. The threaded connection portion 1.2 is located at the bottom of the mounting base 1.1; an external thread is provided on the outer wall of the threaded connection portion 1.2; a groove 1.4 for mounting the conductive sheet is provided at the top of the mounting base, and the through hole 1.3 communicates with the groove 1.4. The mounting shell 1 is an insulating component and can be made of plastic; during assembly, the mounting shell is threadedly connected to the drinking water device through the threaded connection portion 1.2, which is convenient for disassembly and assembly.

[0026] Preferably, a second sealing ring 9 is sleeved on the threaded connection portion. By providing the second sealing ring, water is prevented from overflowing from the connection between the mounting base and the threaded connection portion, ensuring the sealing performance.

[0027] Preferably, the connecting portion 8.2 is bent into an L shape. By bending the connecting portion into an L shape, the connecting portions of the two conductive sheets can be adaptively installed with the corners of the groove. Of course, the connecting portion can also be correspondingly arranged according to the shape of the mounting shell.

[0028] Specifically, the filling depth of the sealing resin 6 is flush with the upper end surface of the electrode probe, ensuring the firmness and insulation of the thermistor. The sealing filling glue is formed by low-pressure injection molding after the epoxy resin material and the injection glue material are fully mixed. The flow rate of the sealing filling glue can be increased by injection molding pressurization, and the curing speed is faster. The epoxy resin material mainly includes polyethylene glycol, di-sec-octyl phthalate, and paraffin oil; the injection glue material mainly includes polyurethane rubber; the epoxy resin material and the injection glue material are fully mixed, melted at a high temperature of 220 - 250 °C by an injection molding machine, injected into the shell body, and cooled to room temperature to obtain the sealing filling glue.

[0029] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. An integrated structure of a TDS water quality detector integrating a thermistor, characterized in that, it includes an installation shell, two electrode probes oppositely arranged at the bottom of the installation shell, each electrode probe is a hollow metal shell, each electrode probe is electrically connected to a first lead respectively, a thermistor is arranged in the inner cavity of one of the electrode probes, a second lead is provided on the lead of the thermistor, the second lead extends out of the electrode probe, and the thermistor is encapsulated in the electrode probe through a sealing resin; each of the electrode probes is open at one end, and it includes a connecting pipe and a probe which are vertically arranged and connected to each other, the thermistor is arranged in the probe, two through holes for the probe to pass through are opened on the bottom surface of the installation shell, and a first sealing ring is arranged in each through hole; both the connecting pipe and the probe are circular tubes, the diameter of the connecting pipe is larger than that of the probe, the connecting pipe is electrically connected to the first lead through a conductive sheet, and the conductive sheet includes a circular ring, a connecting part and a riveting part which are connected in sequence; the riveting part is connected to the first wire by riveting, and the circular ring is sleeved on the connecting pipe; the connecting part is bent into an L shape; the filling depth of the sealing resin is flush with the upper end surface of the electrode probe.

2. The integrated structure of a TDS water quality detector integrating a thermistor according to claim 1, characterized in that, the installation shell includes an integrally arranged installation seat and a threaded connection part, and the threaded connection part is located at the bottom of the installation seat; an external thread is provided on the outer wall of the threaded connection part; a groove for installing the conductive sheet is opened at the top of the installation seat, and the through hole is communicated with the groove.

3. The integrated structure of a TDS water quality detector integrating a thermistor according to claim 2, characterized in that, a second sealing ring is sleeved on the threaded connection part.

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