TDS detection device

Abstract

The invention belongs to the technical field of liquid detection, and particularly relates to a TDS detection device which comprises a transparent shell, a probe support is installed in the transparent shell, multiple sets of probe bodies are arranged in the probe support, one end of the probe support is connected with a wire, the other end of the probe support is inserted into a through hole in the surface of the transparent shell, and the probe bodies are arranged in the through hole. The probe bracket is fixed in the square feature with the notch through encapsulation resin, and an upper cover is arranged above the transparent shell; by arranging the transparent shell assembly with the probe assembly and the thermistor and the three-in-one signal processing circuit on the PCB, the turbidity sensor has the functions of detecting the water turbidity degree, the temperature and the water quality, and is stable in output signal, high in detection sensitivity, compact in structure, small in appearance size and easy to install.

Description

Technical Field

[0001] The invention belongs to the technical field of liquid detection, in particular to a TDS detection device. Background Art

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

[0003] However, the existing TDS detection sensors used in washing household appliances (such as dishwashers and washing machines) occupy a large space, have an incompact structure, and are complicated to assemble. In addition, the temperature detection components of the TDS detection sensors are often distorted 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 TDS detection sensor used in washing household appliances is equipped with opposing infrared transmitting tubes and infrared receiving tubes to detect the turbidity of water. Different TDS detection sensors obtain different feedback voltage values ​​when detecting liquids with the same turbidity. Since the turbidity of washing water is not accurately detected, the washing program cannot be determined according to the turbidity of washing water.

[0005] To this end, 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, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a TDS detection device according to the present invention 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, the probe holder is fixed in a square feature with a notch by a potting resin, and an upper cover is installed above the transparent shell; 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 outer side wall of the transparent shell is provided with a plurality of card blocks, and two through holes are provided in the middle of the transparent shell, and square grooves with notches are provided above the through holes; an O-type sealing ring is provided outside the transparent shell.

[0008] Preferably, the PCB board assembly further comprises 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.

[0009] Preferably, an assembly frame is installed inside the transparent shell, the probe bracket is clamped inside the assembly frame, the adjustment mechanism includes a fixed ring arranged inside the assembly frame, the side wall of the fixed ring is provided with a connecting shaft, the connecting shaft can be rotated at a certain angle on the side wall of the fixed ring, and an assembly groove is opened at the side wall of the probe bracket at a corresponding position to the connecting shaft, and the shape of the assembly groove is adapted to the shape of the connecting shaft.

[0010] Preferably, a limiting ring groove is provided on the side wall of the fixing ring, the groove wall of the limiting ring groove is rotatably connected with a driving block, 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 the 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.

[0011] Preferably, an annular groove is provided 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 of the limiting spring away from the annular groove is connected to the side wall of the driving block; the outer circumferential surface of the connecting shaft is sleeved with a special-shaped sleeve, the shape of the special-shaped sleeve is a large diameter at one end and a small diameter at the other end, the material of the special-shaped sleeve is rubber, and the outer circumferential surface of the special-shaped sleeve is provided with a plurality of rubber balls.

[0012] Preferably, a rectangular groove is provided at the internal 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 close to the assembly groove; during operation, when the connecting shaft is not in the assembly groove, the staff can take out the probe bracket to replace a different probe body, thereby improving the practicality of the embodiment of the present invention itself.

[0013] Preferably, 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.

[0014] Preferably, the shapes of arc block one and arc block two are both semicircular arcs, the diameter of arc block one is larger than the diameter of arc block two, 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.

[0015] Preferably, an elastic telescopic rod is fixedly installed on the groove wall of the rectangular groove, and the elastic telescopic rod is connected to the side wall of the sliding rod on the side away from the rectangular groove. A telescopic spring is sleeved on the outer peripheral surface of the elastic telescopic rod, and 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 one; 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 in the inside of the clamping groove.

[0016] Preferably, a cleaning ring is provided inside the assembly frame, and the cleaning ring is provided in multiple groups, and 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 clamp is made of rubber; when working, 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 placing in and taking out, thereby ensuring the detection of liquid TDS.

[0017] The beneficial effects of the present invention are as follows: 1. A TDS detection device described in the present invention, by providing a transparent housing component with a probe component, a thermistor on a PCB board, and a three-in-one signal processing circuit, enables the turbidity sensor to detect the degree of water pollution, temperature and water quality, has a stable output signal, high detection sensitivity, compact structure, small size, and simple installation.

[0018] 2. A TDS detection device described in the present invention, through the L-shaped pressure rod will move down along the guide groove, and the lower end of the L-shaped pressure rod will move in the guide groove 2, then the arc block 2 of the outer wall of the L-shaped pressure rod will contact the arc block 1, and the arc block 2 will squeeze the arc block 1, under the pressure of the arc block 1, the sliding rod will move a certain distance, that is, the sliding rod will drive the fixing ring and the connecting shaft to move at the same time, when the probe bracket moves to a suitable position, the connecting shaft just enters the interior of the assembly groove, so that the probe bracket can be quickly installed.

[0019] 3. The TDS detection device described in the present invention can clean the scale and other impurities on the surface of the probe body under the action of the cleaning ring when the probe body is taken out from the cleaning ring. This can reduce the adhesion 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; and prevent dirt or impurities from affecting the optical path and electrical signals, thereby ensuring the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention; Figure 2 It is a schematic diagram of the internal structure of the transparent housing in the present invention; Figure 3 is a schematic diagram of the cross-sectional structure of the assembly rack of the present invention; Figure 4 It is a schematic diagram of the structure of the pressure plate in the present invention; Figure 5 It is a structural schematic diagram of the L-shaped pressure rod in the present invention; Figure 6 It is a schematic diagram of the structure of the fixing ring in the present invention; Figure 7 It is a structural schematic diagram of the sliding rod in the present invention; Figure 8 It is a schematic diagram of the structure of the driving block in the present invention; Fig. 9 It is a schematic diagram of the structure of the connection ring and the fixed ring separated in the present invention; Fig.10 It is a structural schematic diagram of the cross section of the fixing ring in the present invention; Fig.11 It is a schematic diagram of the structure of the clamp head part in the present invention; Fig.12 It is a partial structural schematic diagram of the probe support in the present invention.

[0022] In the figure: 1. transparent shell; 2. probe bracket; 201. probe body; 3. upper cover; 4. PCB board assembly; 401. infrared transmitting tube; 402. infrared receiving tube; 403. thermistor; 404. three-in-one signal processor; 6. assembly frame; 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. assembly 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. clamping head; 134. clamping groove; 14. guide groove 2; 141. arc block 1; 151. arc block 2; 16. elastic telescopic rod; 17. cleaning ring. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] like Figures 1 to 4As shown, a TDS detection device according to an embodiment of the present invention comprises a transparent shell 1, a probe holder 2 is installed inside the transparent shell 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 shell 1, and an upper cover 3 is installed above the transparent shell 1; A 2p connector is connected inside the transparent housing 1, and a wire connects the probe bracket and the 2p connector, and the 2p connector is used to connect an external circuit; a potting resin is provided at the installation connection between the probe bracket 2 and the transparent housing 1; A PCB board assembly 4 is arranged outside the transparent housing 1, and the PCB board assembly 4 includes an infrared transmitting tube 401 and an infrared receiving tube 402; The outer side wall of the upper cover 3 is provided with a plurality of blocks, and two through holes are provided in the middle of the upper cover 3, and a square groove with a notch is provided above the through holes; an O-ring is provided outside the transparent shell 1.

[0025] When working, the TDS detection device of the embodiment of the present invention is installed at a suitable detection position through the block and the through hole on the outer wall of the transparent shell 1, and the probe bracket 2 and the probe body 201 are immersed in the liquid to be detected, and then the infrared emitting tube 401 emits infrared light, and the probe body 201 guides the infrared light into the liquid, and the infrared receiving tube 402 receives the light signal that passes through the water body, so that the turbidity of the water is detected by the change of light intensity; At the same time, the probe body 201 also indirectly detects the total dissolved solids content in the water by measuring the conductivity of the liquid. The probe body 201 transmits the collected physical signals such as light signals, resistance values ​​and conductivity to the signal processor on the PCB board through wires or connectors. The signal processor amplifies, filters and digitizes the signals transmitted by the probe, and finally outputs usable detection data. Such a design enables the TDS detection device of the present invention to have the function of detecting the degree of water pollution, temperature and water quality, with stable output signals and high detection sensitivity.

[0026] Furthermore, the O-ring and potting resin are designed to ensure the reliability of the TDS detection device of the embodiment of the present invention in a humid environment and prevent liquid from entering the internal circuit; The PCB board assembly 4 also includes a thermistor 403 installed on a solder pad on the surface of its body, and a three-in-one signal processor 404 is provided on both sides of the PCB board assembly 4; it should be noted that the surface of the PCB board assembly 4 is provided with a 2p needle holder welding hole and a 3p needle holder welding hole, the 2p needle holder pin passes through the welding hole in the middle of the PCB board, and the 3p needle holder pin passes through the welding hole in the upper part of the PCB board; an adjustment mechanism is provided inside the transparent shell 1, and the adjustment mechanism is used to adjust the angle of the probe bracket.

[0027] 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 can be changed according to the change of the liquid temperature, and converted into a temperature signal through the circuit, and finally the collected physical signals such as light signals, resistance values ​​and conductivity are transmitted to the three-in-one signal processor 404 on the PCB board, so that the turbidity, temperature and water quality of the liquid can be detected quickly and accurately.

[0028] Specifically, the probe body 201 can be divided into a turbidity probe, a temperature probe, a TDS probe, etc.; In summary: by providing a transparent housing 1 component with a probe component, a thermistor 403 on a PCB board, and a three-in-one signal processing circuit, the TDS detection device of the present invention has the function of detecting the degree of water pollution, temperature and water quality, and has a stable output signal, high detection sensitivity, compact structure, small size, and simple installation.

[0029] like Figures 3 to 10 As shown, an assembly frame 6 is installed inside the transparent shell 1, and the probe bracket 2 is clamped inside the assembly frame 6. The adjustment mechanism includes a fixing ring 7 arranged inside the assembly frame 6, and the side wall of the fixing ring 7 is provided with a connecting shaft 701. The connecting shaft 701 can rotate at a certain angle on the side wall of the fixing ring 7. An assembly groove 8 is provided at a position corresponding to the side wall of the probe bracket 2 and the connecting shaft 701, and the shape of the assembly groove 8 is adapted to the shape of the connecting shaft 701. During operation, since the temperature, turbidity and TDS of the liquid 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 continues to propose the following embodiments: Figure 6 As 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, the connecting shaft 701 rotates at a certain angle on the fixing ring 7, and 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 of liquids in various aspects is improved. The side wall of the fixing ring 7 is provided with a limiting ring groove 702, the groove wall of the limiting ring groove 702 is rotatably connected with a driving block 703, the side wall of the driving block 703 is installed with a magnetic block 704, the groove wall of the limiting ring groove 702 and one side away from the magnetic block 704 is installed with an electromagnetic block 705, the magnetism generated by the electromagnetic block 705 is the same as the magnetism of the magnetic block 704, and the side wall of the driving block 703 is connected to the side wall of the connecting shaft 701; When working, refer to the attached Figure 8 and Fig. 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 charged and generate magnetism. The generated magnetism is the same as the magnetism of the magnetic block 704. According to the principle of like charges repel 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, and then 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, thereby improving the detection accuracy of the liquid TDS. 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 magnitude of the electromagnetic block 705, thereby further improving the detection accuracy of the liquid TDS.

[0030] Since 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 electrodes, and the magnitude of the current is affected by the concentration and distribution of ions in the water. By changing the angle of the probe, the measurement path between the electrodes can be optimized to make the current path more uniform, thereby improving the measurement accuracy.

[0031] like Figures 4 to 8 As shown, the inner wall of the limiting ring groove 702 is provided with an annular groove 706, the bottom of the driving block 703 is arranged on the inner wall of the annular groove 706, and a limiting spring 707 is installed on the inner wall of the annular groove 706, and the side of the limiting spring 707 away from the annular groove 706 is connected to the side wall of the driving block 703; the outer peripheral surface of the connecting shaft 701 is sleeved with a special-shaped sleeve 9, and the shape of the special-shaped sleeve 9 is a large diameter at one end and a small diameter at the other end, and the material of the special-shaped sleeve 9 is rubber, and the outer peripheral surface of the special-shaped sleeve 9 is provided with a plurality of rubber balls; When working, refer to the attached Figure 7 and Figure 8As shown, since the shape of the special-shaped sleeve 9 is a large diameter at one end and a small diameter at the other end, and its material is rubber, it can ensure that the special-shaped sleeve 9 is tightly stuck in the assembly groove 8, thereby fixing the probe bracket 2, and can facilitate the connecting shaft 701 to drive the probe bracket 2 to rotate at a certain angle during the rotation process, so as to facilitate the adjustment of the probe body 201 itself; and a limit spring 707 and an annular groove 706 are designed to further limit the moving position of the drive block 703, which is convenient for the adjustment of the probe bracket 2, and the limit spring 707 can facilitate the recovery of the probe bracket 2.

[0032] A rectangular groove 10 is provided at the inner horizontal surface of the assembly frame 6, a sliding rod 11 is slidably provided on the inner wall of the rectangular groove 10, the side wall of the fixing ring 7 is connected to the end of the sliding rod 11, and a linkage unit is provided on the side of the probe bracket 2, and the linkage unit is used to drive the sliding rod 11 to move toward the inside of the assembly groove 8; during operation, when the connecting shaft 701 is not in the assembly groove 8, the staff can take out the probe bracket 2 to replace a different probe body 201, so as to improve the practicality of the embodiment of the present invention itself; After the probe body 201 itself is replaced, it needs to be installed inside the assembly frame 6 again. At this time, the probe bracket 2 is slid downward 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 on the end of the sliding rod 11, the sliding rod 11 will simultaneously drive the fixing ring 7 and the connecting shaft 701 to move. When the probe bracket 2 moves to a suitable position, the connecting shaft 701 just enters the interior of the assembly groove 8. This can achieve rapid installation of the probe bracket 2 and facilitate replacement of different probes.

[0033] like Figures 4 to 11 As shown, the linkage unit includes a pressure plate 12 fixedly mounted above the probe bracket 2, a guide groove 13 is provided on the vertical surface of the assembly frame 6, and an L-shaped pressure rod 131 is slidably provided on the groove wall of the guide groove 13; The outer surface of the sliding rod 11 is provided with a second guide groove 14, the lower end surface of the pressure plate 12 contacts the upper end surface of the L-shaped pressure rod 131, the inner wall of the second guide groove 14 is fixedly installed with an arc block 141, the outer wall of the L-shaped pressure rod 131 is installed with a second arc block 151 on the lower side, the lower end of the L-shaped pressure rod 131 is slidably arranged inside the second guide groove 14, and when the L-shaped pressure rod 131 moves along the second guide groove 14, the first arc block 141 contacts the second arc block 151; During operation, when the probe bracket 2 slides downward along the groove in the middle of the assembly frame 6, the probe bracket 2 will simultaneously drive the pressure plate 12 to move downward, and when the pressure plate 12 moves downward, its lower end surface will squeeze the upper end surface of the L-shaped pressure rod 131, so that the L-shaped pressure rod 131 will move downward along the guide groove 13, and the lower end of the L-shaped pressure rod 131 will move in the guide groove 2 14, and then the arc block 2 151 on the outer wall of the L-shaped pressure rod 131 will contact the arc block 141, and the arc block 2 151 will squeeze the arc block 141, and under the pressure of the arc block 141, the sliding rod 11 will move a certain distance, that is, the sliding rod 11 will simultaneously drive the fixing ring 7 and the connecting shaft 701 to move, and when the probe bracket 2 moves to a suitable position, the connecting shaft 701 will just enter the interior of the assembly groove 8, so that the probe bracket 2 can be quickly installed.

[0034] The arc block 1 141 and the arc block 2 151 are both semicircular in shape, the diameter of the arc block 141 is larger than the diameter of the arc block 2 151, 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 spherically connected to the upper end surface of the L-shaped pressure rod 131; During operation, since the diameter of arc block 1 141 is larger than the diameter of arc block 2 151, the sliding rod 11 can conveniently drive the fixing ring 7 and the connecting shaft 701 to move to the inside of the assembly groove 8, and 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 bracket 2 rotates, the probe bracket 2 will simultaneously drive the pressure plate 12 to rotate, and the pressure plate 12 contacts with the spherical seat 132, and the pressure plate 12 can rotate on the outer surface of the spherical seat 132, so as to facilitate the arc block 2 151 on the outer wall of the L-shaped pressure rod 131 to press against the arc block 1 141.

[0035] An elastic telescopic rod 16 is fixedly installed on the groove wall of the rectangular groove 10, and 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, and a telescopic spring is sleeved on the outer peripheral surface of the elastic telescopic rod 16. A clamping head 133 is fixedly installed on the outer wall of the L-shaped pressure rod 131, and a clamping groove 134 is opened on the groove wall of the guide groove 13; 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 clamping head 133 clamped in the clamping slot 134; During operation, when the sliding rod 11 moves toward the inside of the assembly groove 8, the sliding rod 11 will simultaneously drive the elastic telescopic rod 16 to stretch, and when the connecting shaft 701 moves to the inside of the assembly groove 8, the clamping head 133 on the outer wall of the L-shaped pressure rod 131 is just clamped into the inside of the clamping groove 134. At this time, under the mutual limitation of the clamping head 133 and the clamping groove 134, the stability of the L-shaped pressure rod 131 can be maintained for a certain period of time, so that the rotation of the probe bracket 2 is convenient; When the probe body 201 needs to be replaced, first pull the probe bracket 2 upwards for a certain distance, that is, first make the arc block 2 151 away from the arc block 1 141. 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 clamping head 133 clamped in the inside of the clamping slot 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 upwards, and the operation is relatively convenient and simple.

[0036] A cleaning ring 17 is provided inside the assembly frame 6, and the cleaning ring 17 is provided in multiple groups, and the probe body 201 passes through the inside of the cleaning ring 17; during operation, when the liquid is detected once and the probe body 201 needs to be replaced, that is, when the probe body 201 is taken out of the cleaning ring 17, the scale and other impurities on the surface of the probe body 201 can be cleaned under the action of the cleaning ring 17, so that the dirt and water stains attached to 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 extended; It can also prevent dirt or impurities from affecting the optical path and electrical signals, ensuring the accuracy of the test results.

[0037] The inner wall of the cleaning ring 17 is sleeved with an adsorption pad, and the material of the clamp 133 is rubber; when working, the cleaning ring 17 is designed to not only guide the probe body 201, making it convenient to remove and replace the probe body 201, but also clean the probe body 201 when placing and taking it out, ensuring the detection of liquid TDS.

[0038] 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 converted into a temperature signal through the circuit, and finally the collected physical signals such as light signals, resistance values ​​and conductivity are transmitted to the three-in-one signal processor 404 on the PCB board, so that the turbidity degree, temperature and water quality of the liquid can be detected quickly and accurately; by setting the transparent shell 1 component with the probe component and the thermistor 403 on the PCB board and the three-in-one signal processing circuit, the turbidity sensor has the function of detecting the turbidity degree, temperature and water quality of water, and has a stable output signal, high detection sensitivity, compact structure, small size and simple installation; 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 through 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 of liquids in various aspects is improved; refer to the attached Figure 7and Figure 8 As shown, when the connecting shaft 701 is located inside the assembly groove 8, the special-shaped sleeve 9 with a large 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 is made of 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, so as to facilitate the adjustment of the probe body 201 itself; when the connecting shaft 701 is not inside the assembly groove 8, the staff can take out the probe bracket 2 at this time, so as to replace a different probe body 201, so as to improve the practicality of the embodiment of the present invention itself; When the probe body 201 is replaced and needs to be installed inside the assembly frame 6 again, the probe bracket 2 is slid downward 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 on the end of the sliding rod 11, the sliding rod 11 will simultaneously drive the fixing ring 7 and the connecting shaft 701 to move. When the probe bracket 2 moves to a suitable position, the connecting shaft 701 just enters the interior of the assembly groove 8, so that the probe bracket 2 can be quickly installed. When the probe bracket 2 slides downward along the groove in the middle of the assembly frame 6, the probe bracket 2 will simultaneously drive the pressure plate 12 to move downward. When the pressure plate 12 moves downward, its lower end surface will squeeze the upper end surface of the L-shaped pressure rod 131, so that the L-shaped pressure rod 131 will move downward along the guide groove 13, and the lower end of the L-shaped pressure rod 131 will move in the guide groove 2 14, and then the arc block 2 151 on the outer wall of the L-shaped pressure rod 131 will contact the arc block 141, and the arc block 2 151 will squeeze the arc block 141. Under the pressure of the arc block 141, the sliding rod 11 will move a certain distance, that is, the sliding rod 11 will simultaneously drive the fixing ring 7 and the connecting shaft 701 to move. When the probe bracket 2 moves to a suitable position, the connecting shaft 701 just enters the interior of the assembly groove 8, so that the probe bracket 2 can be quickly installed. Since the diameter of the arc block 141 is larger than the diameter of the arc block 2 151, it is convenient for the sliding rod 11 to drive the fixing ring 7 and the connecting shaft 701 to move to the inside of the assembly groove 8, and 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 bracket 2 rotates, the probe bracket 2 will simultaneously drive the pressure plate 12 to rotate, and the pressure plate 12 is in contact with 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 L-shaped pressure rod The arc block 2 151 on the outer wall of 131 presses against the arc block 1 141; when the sliding rod 11 moves toward the inside of the assembly groove 8, the sliding rod 11 will simultaneously drive the elastic telescopic rod 16 to stretch, and when the connecting shaft 701 moves to the inside of the assembly groove 8, the clamping head 133 on the outer wall of the L-shaped pressure rod 131 is just clamped into the inside of the clamping groove 134. At this time, under the mutual limitation of the clamping head 133 and the clamping groove 134, the stability of the L-shaped pressure rod 131 can be maintained for a certain period of time, so that the rotation of the probe bracket 2 is convenient; When the probe body 201 needs to be replaced, the probe bracket 2 is first pulled out a certain distance upward, that is, the arc block 2 151 is first moved away from the arc block 1 141. 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 clamping head 133 clamped in 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, the control electromagnetic block 705 is charged and generates magnetism, and the generated magnetism and The magnetic block 704 has the same magnetic properties. According to the principle of like repels like, 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, and then the driving block 703 will drive the connecting shaft 701 to rotate at a certain angle, so that the connecting shaft 701 can drive the probe bracket 2 to rotate at a certain angle in the liquid, thereby improving the detection accuracy of the liquid TDS; it should be noted that in the embodiment of the present invention, the magnetic size of the electromagnetic block 705 can be controlled to adjust the moving angle of the driving block 703 in the limiting ring groove 702, thereby further improving the detection accuracy of the liquid TDS.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached 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, and the probe bracket is clamped inside the assembly frame. The adjustment mechanism includes a fixed ring arranged inside the assembly frame, and the side wall of the fixed ring is provided with a connecting shaft. The connecting shaft can rotate at a certain angle on the side wall of the fixed ring. An assembly groove is opened at the side wall of the probe bracket at a position corresponding to the connecting shaft, and the shape of the assembly groove is adapted to the shape of the connecting shaft.

2. A TDS detection device according to claim 1, characterized in that: 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 the 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.

3. A TDS detection device according to claim 2, characterized in that: An annular groove is provided 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 of the limiting spring away from the annular groove is connected to the side wall of the driving block; the outer circumferential surface of the connecting shaft is sleeved with a special-shaped sleeve, the shape of the special-shaped sleeve is 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 circumferential surface of the special-shaped sleeve.

4. A TDS detection device according to claim 3, characterized in that: A rectangular groove is provided on the internal 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.

5. A TDS detection device according to claim 4, characterized in that: 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.

6. A TDS detection device according to claim 5, 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.

7. A TDS detection device according to claim 5, 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.

8. A TDS detection device according to claim 7, 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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