A TDS detection device

Abstract

The present invention belongs to the technical field of liquid detection, and specifically relates to a TDS detection device, which includes a transparent housing. Inside the transparent housing, a probe support is installed. Inside the probe support, multiple groups of probe bodies are arranged. One end of the probe support is connected to a wire, and the other end is inserted into a through hole on the surface of the transparent housing. The probe support is fixed in a square feature with a notch through potting resin. An upper cover is installed above the transparent housing. By providing a transparent housing assembly with a probe component, a thermistor on the PCB board, and a three-in-one signal processing circuit, the turbidity sensor has the functions of detecting the turbidity, temperature, and water quality of water, with stable output signals, high detection sensitivity, a compact structure, small external dimensions, and simple installation.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid detection, and specifically relates to a TDS detection device. Background Art

[0002] TDS detection indirectly reflects the content of dissolved solids in water by measuring the conductivity of water. Existing household washing appliances (such as dishwashers and washing machines) are equipped with TDS detection sensors to judge the cleanliness of the items being washed according to the turbidity of the water during the washing process and set the current cleaning operation mode based on the judgment result.

[0003] However, the existing TDS detection sensors for household washing appliances (such as dishwashers and washing machines) occupy a large position, have an insufficiently compact structure, complex assembly, and the components of the TDS detection sensor for temperature detection often suffer from distortion due to the temperature generated by the sensor itself and / or the temperature change of the cleaning medium is determined too slowly due to the structure of the sensor itself.

[0004] At the same time, the existing TDS detection sensors for household washing appliances are provided with oppositely arranged infrared emitting tubes and infrared receiving tubes to detect the turbidity of water. When different TDS detection sensors detect liquids with the same turbidity, the obtained feedback voltage values vary greatly. Since the turbidity of the washing water cannot be accurately detected, the washing program cannot be determined according to the turbidity of the washing water.

[0005] Therefore, the present invention provides a TDS detection device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A TDS detection device of the present invention includes a transparent housing. A probe bracket is installed inside the transparent housing. Multiple groups of probe bodies are arranged inside the probe bracket. One end of the probe bracket is connected to a wire, and the other end is inserted into a through hole on the surface of the transparent housing. The probe bracket is fixed in a square feature with a notch by potting resin. An upper cover is installed above the transparent housing;

[0008] A PCB board assembly is arranged on the outer side of the transparent housing, and the PCB board assembly includes an infrared emitting tube and an infrared receiving tube;

[0009] A plurality of clamping blocks are arranged on the outer side wall of the transparent housing, and two through holes are arranged in the middle of the transparent housing. A square groove with a notch is arranged above the through holes. An O-ring is arranged outside the transparent housing.

[0010] Preferably, the PCB board assembly further includes a thermistor mounted on the pads on the surface of its body, and triple signal processors are provided on both sides of the PCB board assembly.

[0011] Preferably, an assembly rack is installed inside the transparent housing, the probe holder is clamped inside the assembly rack, the adjusting mechanism includes a fixed ring arranged inside the assembly rack, a connecting shaft is provided on the side wall of the fixed ring, and the connecting shaft can rotate at a certain angle on the side wall of the fixed ring. An assembly groove is opened at a position corresponding to the side wall of the connecting shaft on the side wall of the probe holder, and the shape of the assembly groove is adapted to the shape of the connecting shaft.

[0012] Preferably, a limiting ring groove is opened on the side wall of the fixed ring, a driving block is rotatably connected to the groove wall of the limiting ring groove, a magnetic block is installed on the side wall of the driving block, and an electromagnetic block is installed on the side wall of the limiting ring groove and away from the magnetic block. The magnetism generated by the electromagnetic block is the same as that of the magnetic block, and the side wall of the driving block is connected to the side wall of the connecting shaft.

[0013] Preferably, an annular groove is opened on the inner wall of the limiting ring groove, the bottom of the driving block is arranged on the inner wall of the annular groove, a limiting spring is installed on the inner wall of the annular groove, and the side away from the annular groove of the limiting spring is connected to the side wall of the driving block; a special-shaped sleeve is sleeved on the outer peripheral surface of the connecting shaft, the shape of the special-shaped sleeve is that one end has a large diameter and the other end has a small diameter, the material of the special-shaped sleeve is rubber, and a plurality of rubber balls are arranged on the outer peripheral surface of the special-shaped sleeve.

[0014] Preferably, a rectangular groove is opened at the horizontal plane inside the assembly rack, a sliding rod is slidably arranged on the inner wall of the rectangular groove, the fixed ring is fixedly installed at the end of the sliding rod, and a linkage unit is arranged on the side of the probe holder. The linkage unit is used to drive the sliding rod to move towards the inside of the assembly groove; during operation, when the connecting shaft is not inside the assembly groove, at this time, the staff can take out the probe holder, so as to replace different probe bodies, which can improve the practicability of the embodiment of the present invention.

[0015] Preferably, the linkage unit includes a pressure plate fixedly installed above the probe holder, a guiding groove one is opened on the vertical surface of the assembly rack, and an L-shaped pressure rod is slidably arranged on the groove wall of the guiding groove one;

[0016] A guiding groove two is opened on the outer surface of the sliding rod, the lower end surface of the pressure plate is in contact with the upper end surface of the L-shaped pressure rod, an arc-shaped block one is fixedly installed on the inner wall of the guiding groove two, an arc-shaped block two is installed on the outer wall of the L-shaped pressure rod near the lower side, and the lower end of the L-shaped pressure rod is slidably arranged inside the guiding groove two. When the L-shaped pressure rod moves along the guiding groove two, the arc-shaped block one will contact the arc-shaped block two.

[0017] Preferably, the shapes of the first arc-shaped block and the second arc-shaped block are both semi-circular arcs. The diameter of the first arc-shaped block is greater than that of the second arc-shaped block. A spherical seat is provided at the contact position between the upper end surface of the L-shaped pressure rod and the lower end surface of the pressure plate, and the spherical seat is ball-jointed to the upper end surface of the L-shaped pressure rod.

[0018] Preferably, an elastic telescopic rod is fixedly installed on the groove wall of the rectangular groove. The side of the elastic telescopic rod away from the rectangular groove is connected to the side wall of the sliding rod. A telescopic spring is sleeved on the outer peripheral surface of the elastic telescopic rod. A clamping head is fixedly installed on the outer wall of the L-shaped pressure rod, and a clamping groove is formed on the groove wall of the first guiding groove. It should be noted that the elastic potential energy of the elastic telescopic rod and the telescopic spring on its surface is greater than the clamping force of the clamping head clamped inside the clamping groove.

[0019] Preferably, a cleaning ring is provided inside the assembly frame. A plurality of groups of cleaning rings are provided, and the probe body passes through the inside of the cleaning ring. An adsorption pad is sleeved on the inner wall of the cleaning ring, and the material of the clamping head is rubber. During operation, the cleaning ring is designed to not only guide the probe body, facilitate the removal and re-placement of the probe body, but also clean the probe body when it is put in and taken out, ensuring the detection of liquid TDS.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. For the TDS detection device of the present invention, by providing a transparent housing assembly with a probe assembly, a thermistor on the PCB board, and a three-in-one signal processing circuit, the turbidity sensor has the functions of detecting the turbidity, temperature, and water quality of water, with stable output signals, high detection sensitivity, a compact structure, small external dimensions, and simple installation.

[0022] 2. For the TDS detection device of the present invention, the L-shaped pressure rod will move downward along the first guiding groove, and the lower end of the L-shaped pressure rod will move in the second guiding groove. Subsequently, the second arc-shaped block on the outer wall of the L-shaped pressure rod will contact the first arc-shaped block, and the second arc-shaped block will squeeze the first arc-shaped block. Under the pressure of the first arc-shaped block, the sliding rod will move a certain distance, that is, the sliding rod will drive the fixed ring and the connecting shaft to move at the same time. When the probe bracket moves to an appropriate position, the connecting shaft will just enter the inside of the assembly groove at this time, so as to realize the rapid installation of the probe bracket.

[0023] 3. For the TDS detection device of the present invention, when the probe body is taken out from the cleaning ring, under the action of the cleaning ring, the scale and other impurities on the surface of the probe body can be cleaned, so as to reduce the attachment of dirt and water stains on the surface of the probe body, enhance the corrosion resistance of the probe and extend the service life of the probe; moreover, it can prevent dirt or impurities from affecting the optical path and electrical signals, ensuring the accuracy of the detection results. Brief Description of the Drawings

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 is a perspective view of the present invention;

[0026] Figure 2 is a schematic diagram of the internal structure of the transparent housing in the present invention;

[0027] Figure 3 is a schematic sectional view of the mounting bracket in the present invention;

[0028] Figure 4 is a schematic diagram of the structure of the pressure plate in the present invention;

[0029] Figure 5 is a schematic diagram of the structure of the L-shaped pressure rod in the present invention;

[0030] Figure 6 is a schematic diagram of the structure of the fixing ring in the present invention;

[0031] Figure 7 is a schematic diagram of the structure of the sliding rod in the present invention;

[0032] Figure 8 is a schematic diagram of the structure of the driving block in the present invention;

[0033] Figure 9 is a schematic diagram of the separable structure of the connecting ring and the fixing ring in the present invention;

[0034] Figure 10 is a schematic sectional view of the fixing ring in the present invention;

[0035] Figure 11 is a schematic diagram of the structure of the chuck part in the present invention;

[0036] Figure 12 is a schematic diagram of the structure of the probe bracket part in the present invention.

[0037] In the figure: 1, transparent housing; 2, probe bracket; 201, probe body; 3, upper cover; 4, PCB board assembly; 401, infrared emitter; 402, infrared receiver; 403, thermistor; 404, triple signal processor; 6, mounting bracket; 7, fixing ring; 701, connecting shaft; 702, limiting ring groove; 703, driving block; 704, magnetic block; 705, electromagnetic block; 706, annular groove; 707, limiting spring; 8, mounting groove; 9, special-shaped sleeve; 10, rectangular groove; 11, sliding rod; 12, pressure plate; 13, guide groove 1; 131, L-shaped pressure rod; 132, spherical seat; 133, chuck; 134, card slot; 14, guide groove 2; 141, arc block 1; 151, arc block 2; 16, elastic telescopic rod; 17, cleaning ring. Detailed implementation manners

[0038] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0039] As Figures 1 to 4 shown, a TDS detection device according to an embodiment of the present invention includes a transparent housing 1. A probe holder 2 is installed inside the transparent housing 1. A plurality of probe bodies 201 are arranged inside the probe holder 2. One end of the probe holder 2 is connected to a wire, and the other end is inserted into a through hole on the surface of the transparent housing 1. An upper cover 3 is installed above the transparent housing 1;

[0040] A 2p connector is connected inside the transparent housing 1. The wire is connected to the probe holder and the 2p connector. The 2p connector is used to connect to an external circuit; A potting resin is provided at the installation connection between the probe holder 2 and the transparent housing 1;

[0041] A PCB board assembly 4 is provided on the outer side of the transparent housing 1. The PCB board assembly 4 includes an infrared emitting tube 401 and an infrared receiving tube 402;

[0042] A plurality of clamping blocks are provided on the outer side wall of the upper cover 3, and two through holes are provided in the middle of the upper cover 3. A square groove with a notch is provided above the through holes; An O-ring is provided outside the transparent housing 1.

[0043] During operation, the TDS detection device according to the embodiment of the present invention is installed at an appropriate detection position through the clamping blocks and through holes on the outer side wall of the transparent housing 1, and the probe holder 2 and the probe bodies 201 are immersed in the liquid to be detected. Then, the infrared emitting tube 401 emits infrared light, and the probe bodies 201 guide the infrared light into the liquid. The infrared receiving tube 402 receives the optical signal transmitted through the water body. Thus, the turbidity of the water is detected by the change in light intensity;

[0044] At the same time, the probe bodies 201 also indirectly detect the total dissolved solid content in the water by measuring the conductivity of the liquid. The probe bodies 201 transmit the collected physical signals such as optical signals, resistance values, and conductivity to the signal processor on the PCB board through wires or connectors. The signal processor amplifies, filters, and digitally processes the signals transmitted by the probes, and finally outputs available detection data. Such a design enables the TDS detection device of the present invention to have the functions of detecting the turbidity, temperature, and water quality of water, with stable output signals and high detection sensitivity.

[0045] Moreover, an O-ring and potting resin are designed to ensure the reliability of the TDS detection device according to the embodiment of the present invention in a humid environment and prevent liquid from entering the internal circuit;

[0046] The PCB board assembly 4 further includes a thermistor 403 mounted on the pads on the surface of its body. Tripartite signal processors 404 are provided on both sides of the PCB board assembly 4. It should be noted that 2p pin socket welding holes and 3p pin socket welding holes are provided on the surface of the PCB board assembly 4. The pins of the 2p pin socket pass through the welding holes in the middle of the PCB board, and the pins of the 3p pin socket pass through the welding holes in the upper part of the PCB board. An adjusting mechanism is provided inside the transparent housing 1, and the adjusting mechanism is used to adjust the angle of the probe holder.

[0047] During operation, when the probe body 201 is placed inside the liquid to be detected, the temperature of the liquid can be detected through the thermistor 403, and the resistance value is changed according to the change of the liquid temperature, and is converted into a temperature signal through the circuit. Finally, the collected physical signals such as optical signals, resistance values, and conductivity are transmitted to the tripartite signal processor 404 on the PCB board, so that the turbidity, temperature, and water quality of the liquid can be detected quickly and accurately.

[0048] Specifically, the probe body 201 can be divided into a turbidity probe, a temperature probe, a TDS probe, etc.

[0049] In summary, by providing the transparent housing 1 assembly with a probe assembly, the thermistor 403 on the PCB board, and the tripartite signal processing circuit, the TDS detection device of the present invention has the functions of detecting the turbidity, temperature, and water quality of water, with stable output signals, high detection sensitivity, a compact structure, a small external dimension, and simple installation.

[0050] As Figures 3 to 10 shown, an assembly rack 6 is installed inside the transparent housing 1. The probe holder 2 is clamped inside the assembly rack 6. The adjusting mechanism includes a fixed ring 7 provided inside the assembly rack 6. A connecting shaft 701 is provided on the side wall of the fixed ring 7. The connecting shaft 701 can rotate at a certain angle on the side wall of the fixed ring 7. An assembly groove 8 is provided at a position corresponding to the connecting shaft 701 on the side wall of the probe holder 2. The shape of the assembly groove 8 is adapted to the shape of the connecting shaft 701.

[0051] During operation, since the liquid temperature, turbidity, and TDS at different positions are different, in order to improve the detection accuracy of the liquid, it is often necessary to adjust the probe body 201, that is, adjust the angle of the probe body 201 inside the liquid to be detected. Therefore, the present invention further proposes the following embodiments: Refer to the attached Figure 6As shown, specifically during normal use, the connecting shaft 701 is located inside the assembly groove 8, that is, the connecting shaft 701 fixes the probe holder 2 through the assembly groove 8, and the probe body 201 is located inside the liquid to be detected. When it is necessary to detect the turbidity distribution of the liquid at different positions, by rotating the connecting shaft 701 at a certain angle in the fixed ring 7, the connecting shaft 701 drives the probe holder 2 to rotate, so that the probe holder 2 drives the probe body 201 to rotate to a certain angle in the liquid. In this way, the detection of liquids at different positions can be realized, and the detection accuracy in multiple aspects of the liquid is improved;

[0052] A limiting ring groove 702 is formed in the side wall of the fixed ring 7. The groove wall of the limiting ring groove 702 is rotatably connected with a driving block 703. A magnetic block 704 is installed on the side wall of the driving block 703. An electromagnetic block 705 is installed on the groove wall of the limiting ring groove 702 and on the side away from the magnetic block 704. The magnetism generated by the electromagnetic block 705 is the same as the magnetism of the magnetic block 704. The side wall of the driving block 703 is connected to the side wall of the connecting shaft 701;

[0053] During operation, referring to the attached Figure 8 and Figure 9 As shown, the driving block 703 is located on the groove wall of the limiting ring groove 702. When it is necessary to detect the turbidity distribution of the liquid at different positions, the electromagnetic block 705 is controlled to be energized and generate magnetism. The generated magnetism is the same as the magnetism of the magnetic block 704. According to the principle of like poles repelling each other, the magnetic block 704 will rotate to the side away from the electromagnetic block 705, that is, the magnetic block 704 will drive the driving block 703 to move on the inner wall of the limiting ring groove 702. After that, the driving block 703 will drive the connecting shaft 701 to rotate at a certain angle. In this way, the connecting shaft 701 can drive the probe holder 2 to rotate at a certain angle in the liquid, improving the detection accuracy of the liquid TDS;

[0054] It should be noted that in the embodiment of the present invention, the moving angle of the driving block 703 in the limiting ring groove 702 can be adjusted by controlling the magnetic size of the electromagnetic block 705, further improving the detection accuracy of the liquid TDS.

[0055] Since the TDS detection indirectly reflects the content of dissolved solids in water by measuring the conductivity of water, the measurement of conductivity depends on the current between the electrodes, and the magnitude of the current is affected by the ion concentration and distribution in the water body. By changing the angle of the probe, the measurement path between the electrodes can be optimized, making the current path more uniform, thereby improving the measurement accuracy.

[0056] Such as Figures 4 to 8As shown, an annular groove 706 is formed in the inner wall of the limit ring groove 702. The bottom of the driving block 703 is disposed on the inner wall of the annular groove 706. A limit spring 707 is installed on the inner wall of the annular groove 706. One side of the limit spring 707 away from the annular groove 706 is connected to the side wall of the driving block 703. An irregular-shaped sleeve 9 is sleeved on the outer peripheral surface of the connecting shaft 701. The irregular-shaped sleeve 9 has a large diameter at one end and a small diameter at the other end. The material of the irregular-shaped sleeve 9 is rubber. A plurality of rubber balls are provided on the outer peripheral surface of the irregular-shaped sleeve 9.

[0057] During operation, referring to the attached Figure 7 and Figure 8 As shown, since the irregular-shaped sleeve 9 has a large diameter at one end and a small diameter at the other end and its material is rubber, it can ensure that the irregular-shaped sleeve 9 is tightly stuck in the assembly groove 8, thereby fixing the probe holder 2. When the connecting shaft 701 rotates, it can drive the probe holder 2 to rotate at a certain angle through the irregular-shaped sleeve 9, so as to facilitate the adjustment of the probe body 201 itself. Moreover, the limit spring 707 and the annular groove 706 are designed to further limit the moving position of the driving block 703, which is convenient for the adjustment of the probe holder 2, and the limit spring 707 is convenient for the probe holder 2 to return.

[0058] A rectangular groove 10 is formed in the inner horizontal plane of the assembly frame 6. A sliding rod 11 is slidably disposed on the inner wall of the rectangular groove 10. The side wall of the fixed ring 7 is connected to the end of the sliding rod 11. A linkage unit is provided on the side of the probe holder 2. The linkage unit is used to drive the sliding rod 11 to move towards the inside of the assembly groove 8. During operation, when the connecting shaft 701 is not inside the assembly groove 8, the staff can take out the probe holder 2 at this time, so as to replace different probe bodies 201, which can improve the practicability of the embodiment of the present invention.

[0059] After the replacement of the probe body 201 is completed and it needs to be installed into the assembly frame 6 again, the probe holder 2 is slid down along the groove in the middle of the assembly frame 6 at this time, so that the linkage unit on the side of the probe holder 2 drives the sliding rod 11 to move. Since the fixed ring 7 is fixedly installed at the end of the sliding rod 11, the sliding rod 11 will drive the fixed ring 7 and the connecting shaft 701 to move at the same time. When the probe holder 2 moves to an appropriate position, the connecting shaft 701 just enters the inside of the assembly groove 8 at this time, so as to realize the rapid installation of the probe holder 2 and facilitate the replacement of different probes.

[0060] As Figures 4 to 11 shown, the linkage unit includes a pressure plate 12 fixedly installed above the probe holder 2. A guide groove 13 is formed in the vertical surface of the assembly frame 6. An L-shaped pressure rod 131 is slidably disposed on the groove wall of the guide groove 13.

[0061] A guide groove II 14 is formed on the outer surface of the sliding rod 11. The lower end surface of the pressure plate 12 contacts the upper end surface of the L-shaped pressure rod 131. An arc-shaped block I 141 is fixedly installed on the inner wall of the guide groove II 14. An arc-shaped block II 151 is installed on the outer wall of the L-shaped pressure rod 131 near the lower side. The lower end of the L-shaped pressure rod 131 is slidably disposed inside the guide groove II 14. When the L-shaped pressure rod 131 moves along the guide groove II 14, the arc-shaped block I 141 will contact the arc-shaped block II 151;

[0062] During operation, when the probe holder 2 slides downward along the groove in the middle of the assembly rack 6, the probe holder 2 will drive the pressure plate 12 to move downward at the same time. When the pressure plate 12 moves downward, its lower end surface will squeeze the upper end surface of the L-shaped pressure rod 131. Thus, the L-shaped pressure rod 131 will move along the guide groove I 13, and the lower end of the L-shaped pressure rod 131 will move inside the guide groove II 14. Subsequently, the arc-shaped block II 151 on the outer wall of the L-shaped pressure rod 131 will contact the arc-shaped block I 141, and the arc-shaped block II 151 will squeeze the arc-shaped block I 141. Under the pressure of the arc-shaped block I 141, the sliding rod 11 will move a certain distance, that is, the sliding rod 11 will drive the fixed ring 7 and the connecting shaft 701 to move at the same time. When the probe holder 2 moves to a suitable position, at this time, the connecting shaft 701 also just enters the inside of the assembly groove 8, so that the rapid installation of the probe holder 2 can be realized.

[0063] The arc-shaped block I 141 and the arc-shaped block II 151 are both semi-circular in shape. The diameter of the arc-shaped block I 141 is larger than that of the arc-shaped block II 151. A spherical seat 132 is provided at the contact position between the upper end surface of the L-shaped pressure rod 131 and the lower end surface of the pressure plate 12, and the spherical seat 132 is ball-jointed to the upper end surface of the L-shaped pressure rod 131;

[0064] During operation, since the diameter of the arc-shaped block I 141 is larger than that of the arc-shaped block II 151, it is convenient for the sliding rod 11 to drive the fixed ring 7 and the connecting shaft 701 to move into the inside of the assembly groove 8. Moreover, since a spherical seat 132 is provided at the contact position between the upper end surface of the L-shaped pressure rod 131 and the lower end surface of the pressure plate 12, when the probe holder 2 rotates, the probe holder 2 will drive the pressure plate 12 to rotate at the same time. The pressure plate 12 contacts the spherical seat 132, and the pressure plate 12 can rotate on the outer surface of the spherical seat 132, which is convenient for the arc-shaped block II 151 on the outer wall of the L-shaped pressure rod 131 to press against the arc-shaped block I 141.

[0065] An elastic telescopic rod 16 is fixedly installed on the groove wall of the rectangular groove 10. The side of the elastic telescopic rod 16 away from the rectangular groove 10 is connected to the side wall of the sliding rod 11. A telescopic spring is sleeved on the outer peripheral surface of the elastic telescopic rod 16. A chuck 133 is fixedly installed on the outer wall of the L-shaped pressure rod 131. A card slot 134 is formed on the groove wall of the guide groove I 13;

[0066] It should be noted that the elastic potential energy of the elastic telescopic rod 16 and the telescopic spring on its surface is greater than the clamping force of the chuck 133 clamped inside the clamping groove 134;

[0067] During operation, when the sliding rod 11 moves closer to the inside of the assembly groove 8, the sliding rod 11 will simultaneously drive the elastic telescopic rod 16 to stretch. When the connecting shaft 701 moves to the inside of the assembly groove 8, the chuck 133 on the outer wall of the L-shaped pressure rod 131 just snaps into the inside of the clamping groove 134. At this time, under the mutual limitation of the chuck 133 and the clamping groove 134, the stability of the L-shaped pressure rod 131 can be maintained for a certain period of time, thus facilitating the rotation of the probe holder 2;

[0068] When the probe body 201 needs to be replaced, first pull the probe holder 2 upward by a certain distance, that is, first make the arc-shaped block two 151 away from the arc-shaped block one 141. Since the elastic potential energy of the elastic telescopic rod 16 and the telescopic spring on its surface is greater than the clamping force of the chuck 133 clamped inside the clamping groove 134, the elastic telescopic rod 16 will first drive the sliding rod 11 away from the assembly groove 8, that is, the connecting shaft 701 first moves away from the assembly groove 8. At this time, the probe holder 2 is no longer clamped, so the probe holder 2 can be taken out upward, and the operation is relatively convenient and simple.

[0069] A cleaning ring 17 is arranged inside the mounting frame 6. A plurality of groups of the cleaning rings 17 are provided, and the probe body 201 passes through the inside of the cleaning ring 17; During operation, after the liquid is detected once and the probe body 201 needs to be replaced, that is, when the probe body 201 is taken out from the cleaning ring 17, under the action of the cleaning ring 17, the scale and other impurities existing on the surface of the probe body 201 can be cleaned, so that the attachment of dirt and water stains on the surface of the probe body 201 can be reduced, the corrosion resistance of the probe is enhanced, and the service life of the probe is prolonged;

[0070] Moreover, it can prevent dirt or impurities from affecting the optical path and electrical signals, ensuring the accuracy of the detection results.

[0071] An adsorption pad is sleeved on the inner wall of the cleaning ring 17, and the material of the chuck 133 is rubber; During operation, the cleaning ring 17 is designed, which can not only play a guiding role for the probe body 201, facilitate the taking out and re-placement of the probe body 201, but also clean the probe body 201 when it is put in and taken out, ensuring the detection of the liquid TDS.

[0072] During operation, when the probe body 201 is placed inside the liquid to be detected, the temperature of the liquid can be detected through the thermistor 403. The resistance value changes according to the change in the liquid temperature and is converted into a temperature signal through a circuit. Finally, the collected physical signals such as optical signals, resistance values, and conductivity are transmitted to the three-in-one signal processor 404 on the PCB board. In this way, the turbidity, temperature, and water quality of the liquid can be detected quickly and accurately. By setting the transparent housing 1 assembly with the probe assembly, the thermistor 403 on the PCB board, and the three-in-one signal processing circuit, the turbidity sensor has the functions of detecting the turbidity, temperature, and water quality of water, with stable output signals, high detection sensitivity, a compact structure, a small overall dimension, and simple installation.

[0073] The connecting shaft 701 is located inside the assembly groove 8, and the probe body 201 is located inside the liquid to be detected. When it is necessary to detect liquids at different positions, the connecting shaft 701 and the probe bracket 2 are driven to rotate by the fixing ring 7, so that the probe bracket 2 drives the probe body 201 to rotate to a certain angle. In this way, the detection of liquids at different positions can be realized, and the detection accuracy in multiple aspects of the liquid is improved. Refer to the appendix Figure 7 and Figure 8 As shown, when the connecting shaft 701 is located inside the assembly groove 8, the special-shaped sleeve 9 with a larger diameter at one end is also located inside the assembly groove 8. When the special-shaped sleeve 9 is tightly pressed inside the assembly groove 8 and its material is rubber, it can ensure that during the rotation of the connecting shaft 701, it can drive the probe bracket 2 to rotate at a certain angle through the special-shaped sleeve 9. In this way, it is convenient to adjust the probe body 201 itself. When the connecting shaft 701 is not inside the assembly groove 8, at this time, the staff can take out the probe bracket 2 to replace different probe bodies 201, so as to improve the practicability of the embodiment of the present invention.

[0074] After the replacement of the probe body 201 is completed, when it needs to be installed inside the assembly frame 6 again, at this time, the probe bracket 2 is slid down along the groove in the middle of the assembly frame 6, so that the linkage unit on the side of the probe bracket 2 drives the sliding rod 11 to move. Since the fixing ring 7 is fixedly installed at the end of the sliding rod 11, the sliding rod 11 will drive the fixing ring 7 and the connecting shaft 701 to move at the same time. When the probe bracket 2 moves to an appropriate position, at this time, the connecting shaft 701 just enters the assembly groove 8. In this way, the quick installation of the probe bracket 2 can be realized.

[0075] When the probe holder 2 slides down along the groove in the middle of the assembly rack 6, the probe holder 2 will drive the pressure plate 12 to move downward at the same time. When the pressure plate 12 moves downward, the lower end surface of the pressure plate 12 will squeeze the upper end surface of the L-shaped pressure rod 131. As a result, the L-shaped pressure rod 131 will move along the first guiding groove 13, and the lower end of the L-shaped pressure rod 131 will move in the second guiding groove 14. Subsequently, the arc-shaped block two 151 on the outer wall of the L-shaped pressure rod 131 will contact the arc-shaped block one 141, and the arc-shaped block two 151 will squeeze the arc-shaped block one 141. Under the pressure of the arc-shaped block one 141, the sliding rod 11 will move a certain distance, that is, the sliding rod 11 will drive the fixed ring 7 and the connecting shaft 701 to move at the same time. When the probe holder 2 moves to an appropriate position, at this time the connecting shaft 701 also just enters the inside of the assembly groove 8, so as to realize the rapid installation of the probe holder 2;

[0076] Since the diameter of the arc-shaped block one 141 is larger than the diameter of the arc-shaped block two 151, it is convenient for the sliding rod 11 to drive the fixed ring 7 and the connecting shaft 701 to move into the inside of the assembly groove 8. Moreover, since a spherical seat 132 is provided at the contact position between the upper end surface of the L-shaped pressure rod 131 and the lower end surface of the pressure plate 12, when the probe holder 2 rotates, the probe holder 2 will drive the pressure plate 12 to rotate at the same time. The pressure plate 12 contacts the spherical seat 132, and the pressure plate 12 can rotate on the outer surface of the spherical seat 132, which is convenient for the arc-shaped block two 151 on the outer wall of the L-shaped pressure rod 131 to press against the arc-shaped block one 141; when the sliding rod 11 moves closer to the inside of the assembly groove 8, the sliding rod 11 will drive the elastic telescopic rod 16 to stretch at the same time. When the connecting shaft 701 moves into the inside of the assembly groove 8, at this time the chuck 133 on the outer wall of the L-shaped pressure rod 131 just snaps into the inside of the card slot 134. At this time, under the mutual limitation of the chuck 133 and the card slot 134, the stability of the L-shaped pressure rod 131 can be maintained for a certain period of time, so as to facilitate the rotation of the probe holder 2;

[0077] When the probe body 201 needs to be replaced, first pull the probe bracket 2 upward by a certain distance, that is, first make the second arc-shaped block 151 away from the first arc-shaped block 141. Since the elastic potential energy of the elastic telescopic rod 16 and the telescopic spring on its surface is greater than the clamping force of the chuck 133 clamped inside the clamping groove 134, the elastic telescopic rod 16 will first drive the sliding rod 11 away from the assembly groove 8, that is, the connecting shaft 701 will first move away from the assembly groove 8. At this time, the probe bracket 2 is no longer clamped, so the probe bracket 2 can be taken out upward, and the operation is relatively convenient and simple; when it is necessary to detect the turbidity distribution of the liquid at different positions, control the electromagnet 705 to be charged and generate magnetism, and the generated magnetism is the same as that of the magnetic block 704. According to the principle of like repulsion, the magnetic block 704 will rotate to the side away from the electromagnet 705, that is, the magnetic block 704 will drive the driving block 703 to move on the inner wall of the limiting ring groove 702. After that, the driving block 703 will drive the connecting shaft 701 to rotate at a certain angle. In this way, the connecting shaft 701 can drive the probe bracket 2 to rotate at a certain angle in the liquid, improving the detection accuracy of the liquid TDS; it should be noted that in the embodiment of the present invention, the movement angle of the driving block 703 in the limiting ring groove 702 can be adjusted by controlling the magnetic strength of the electromagnet 705, further improving the detection accuracy of the liquid TDS.

[0078] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A TDS detection device, characterized in that: It comprises a transparent shell, a probe holder is installed inside the transparent shell, a plurality of probe bodies are arranged inside the probe holder, one end of the probe holder is connected to a wire, and the other end is inserted into a through hole on the surface of the transparent shell, a potting resin is arranged at the installation connection between the probe holder and the transparent shell, an upper cover is installed above the transparent shell, and an O-type sealing ring is arranged on the outer side of the upper cover; A PCB board assembly is arranged outside the transparent shell, and the PCB board assembly includes an infrared transmitting tube and an infrared receiving tube; The PCB board assembly also includes a thermistor mounted on a pad on the surface of the body thereof, and a three-in-one signal processor is disposed on both sides of the PCB board assembly; An adjustment mechanism is provided inside the transparent housing, and the adjustment mechanism is used to adjust the angle of the probe bracket; An assembly frame is installed inside the transparent shell, the probe bracket is clamped inside the assembly frame, the adjustment mechanism includes a fixing ring arranged inside the assembly frame, the side wall of the fixing ring is provided with a connecting shaft, the connecting shaft can rotate at a certain angle on the side wall of the fixing ring, and an assembly groove is provided at a position corresponding to the connecting shaft on the side wall of the probe bracket, and the shape of the assembly groove is adapted to the shape of the connecting shaft; A limiting ring groove is provided on the side wall of the fixing ring, a driving block is rotatably connected to the groove wall of the limiting ring groove, a magnetic block is installed on the side wall of the driving block, an electromagnetic block is installed on the groove wall of the limiting ring groove and on a side away from the magnetic block, the magnetism generated by the electromagnetic block is the same as that of the magnetic block, and the side wall of the driving block is connected to the side wall of the connecting shaft; An annular groove is formed on the inner wall of the limiting annular groove, the bottom of the driving block is arranged on the inner wall of the annular groove, a limiting spring is installed on the inner wall of the annular groove, and the side of the limiting spring away from the annular groove is connected to the side wall of the driving block; a special-shaped sleeve is sleeved on the outer circumference of the connecting shaft, the special-shaped sleeve has a large diameter at one end and a small diameter at the other end, the material of the special-shaped sleeve is rubber, and a plurality of rubber balls are arranged on the outer circumference of the special-shaped sleeve; A rectangular groove is provided at the inner horizontal surface of the assembly frame, a sliding rod is slidably provided on the inner wall of the rectangular groove, the fixing ring is fixedly installed on the end of the sliding rod, and a linkage unit is provided on the side of the probe bracket, and the linkage unit is used to drive the sliding rod to move toward the inside of the assembly groove; The linkage unit comprises a pressure plate fixedly mounted above the probe bracket, a guide groove 1 is provided on the vertical surface of the assembly frame, and an L-shaped pressure rod is slidably provided on the groove wall of the guide groove 1; A second guide groove is provided on the outer surface of the sliding rod, the lower end surface of the pressure plate contacts the upper end surface of the L-shaped pressure rod, an arc block one is fixedly installed on the inner wall of the second guide groove, and an arc block two is installed on the lower side of the outer wall of the L-shaped pressure rod, and the lower end of the L-shaped pressure rod is slidably arranged inside the second guide groove, and when the L-shaped pressure rod moves along the second guide groove, the first arc block will contact the second arc block.

2. A TDS detection device according to claim 1, characterized in that: The shapes of arc block 1 and arc block 2 are both semicircular arcs, the diameter of arc block 1 is larger than the diameter of arc block 2, a spherical seat is provided at the contact position between the upper end surface of the L-shaped pressure rod and the lower end surface of the pressure plate, and the spherical seat is ball-connected to the upper end surface of the L-shaped pressure rod.

3. A TDS detection device according to claim 1, characterized in that: An elastic telescopic rod is fixedly installed on the groove wall of the rectangular groove, and the side of the elastic telescopic rod away from the rectangular groove is connected to the side wall of the sliding rod. A telescopic spring is sleeved on the outer peripheral surface of the elastic telescopic rod, a clamping head is fixedly installed on the outer wall of the L-shaped pressure rod, and a clamping groove is opened on the groove wall of the guide groove 1.

4. A TDS detection device according to claim 3, characterized in that: The assembly frame is provided with a cleaning ring inside, and the cleaning ring is provided in multiple groups. The probe body passes through the inside of the cleaning ring; the inner wall of the cleaning ring is sleeved with an adsorption pad, and the material of the clamp is rubber.

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