CN210071728U

CN210071728U - Novel TDS sensor

Info

Publication number: CN210071728U
Application number: CN201920472067.3U
Authority: CN
Inventors: 齐金才
Original assignee: Dongguan Iridium Xin Electronic Technology Co Ltd
Current assignee: Dongguan Iridium Xin Electronic Technology Co Ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-02-14
Anticipated expiration: 2029-04-09

Abstract

The utility model discloses a novel TDS sensor, it including: the water inlet pipe is connected with the water outlet pipe through the water inlet pipe; the upper cover component comprises an upper cover main body, a PCB (printed Circuit Board), a thermistor, a probe and an upper cover; the PCB, the thermistor and the probe are welded and fixed on the upper cover main body, and the upper cover is covered on the upper cover main body; the upper cover component and the lower cover component are arranged in a sealing way, and a sealing ring is arranged between the upper cover component and the lower cover component; the lower cover component comprises a lower cover main body, a circulation cavity, the water inlet pipe and the water outlet pipe; the inner cavity of the circulation cavity is rectangular, and the water flowing channels of the water inlet pipe, the circulation cavity and the water outlet pipe are S-shaped; one end of the connector is electrically connected with the PCB, and the other end of the connector is electrically connected with the connector. The utility model discloses a TDS sensor, simple structure is reasonable, can improve the accuracy that detects.

Description

Novel TDS sensor

Technical Field

The utility model belongs to the technical field of the test technique and specifically relates to a novel TDS sensor.

Background

Total Dissolved Solids (TDS), also known as total dissolved solids, is measured in milligrams per liter (mg/L) and indicates how many milligrams of dissolved solids are dissolved in 1 liter of water. Higher TDS values indicate more impurities in the water. The measurement principle is actually to indirectly reflect the TDS value by measuring the conductivity of the water.

Typically, TDS sensors are used to detect TDS in water. The TDS sensor has a wide application range, and is generally used in equipment for water purification treatment of drinking water and water storage vessels, such as water purification machines, water dispensers, kettles and all water purification equipment, to perform a task of detecting the purity of water quality.

TDS sensor among the prior art is at the detection in-process, and its internal cavity has the technical problem that appears the bubble or not full water, and this undoubtedly has the deviation to the test of quality of water pure water, mistesting or the defect of empty survey. In summary, a novel TDS sensor providing detection accuracy is a technical problem that needs to be solved urgently in the field.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists above, the utility model aims at providing a neotype TDS sensor, simple structure is reasonable, can improve the accuracy that detects.

In order to realize the purpose, the technical scheme of the utility model is that:

a novel TDS sensor, comprising: the water inlet pipe is connected with the water outlet pipe through the water inlet pipe; the upper cover component comprises an upper cover main body, a PCB (printed Circuit Board), a thermistor, a probe and an upper cover; the PCB, the thermistor and the probe are welded and fixed on the upper cover main body, and the upper cover is covered on the upper cover main body; the upper cover component and the lower cover component are arranged in a sealing way, and a sealing ring is arranged between the upper cover component and the lower cover component; the lower cover component comprises a lower cover main body, a circulation cavity, the water inlet pipe and the water outlet pipe; the inner cavity of the circulation cavity is rectangular, and the water flowing channels of the water inlet pipe, the circulation cavity and the water outlet pipe are S-shaped; one end of the connector is electrically connected with the PCB, and the other end of the connector is electrically connected with the connector.

As a specific embodiment, the number of the probes is two, and the two probes and the thermistor are distributed in a triangular shape.

In a specific embodiment, the upper cover body includes a slot for accommodating the thermistor and the PCB.

As a specific embodiment, the PCB is fixedly connected to the upper cover main body in a glue-pouring manner.

As a specific embodiment, the novel TDS sensor further comprises four fixing screws, wherein the upper cover main body and the lower cover main body are respectively provided with four upper cover screw holes and four lower cover screw holes which are in threaded connection with the fixing screws, and the four fixing screws are respectively in threaded connection with one upper cover screw hole and one lower cover screw hole.

As a specific example, the flow-through chamber has a circular shape.

The utility model discloses a novel relative prior art of TDS sensor possess following beneficial technological effect:

the internal cavity shape of the circulation cavity is special: the water inlet pipe, the internal cavity of the circulation cavity and the water flowing channel of the water outlet pipe are S-shaped. Through in rivers follow this neotype TDS sensor, business turn over water is "S" type flow direction, produces the resistance during the rivers circulation, forces it is in full water state all the time to have water to pass through in the internal cavity of circulation cavity, and can not form the air and circle round the problem of blockking up or not full water, avoids TDS value test deviation, reduces the phenomenon of mismeasuring, empty survey, can improve the accuracy that detects.

The sealing ring is arranged between the upper cover component and the lower cover component for sealing, and can ensure the water flow tightness in the circulation cavity, so that moisture is prevented from permeating into the PCB, and the product is finally short-circuited.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic diagram of an overall structure of a novel TDS sensor according to an embodiment of the present invention;

fig. 2 is a diagram of the assembly steps of a novel TDS sensor according to an embodiment of the present invention;

fig. 3 is a schematic diagram of the water flow direction of a novel TDS sensor according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of the distribution of the probes and thermistors on one side of the upper cover assembly of the present invention;

FIG. 5 is a schematic diagram of the distribution of the probes and thermistors on one side of the lower cover assembly of the present invention;

reference numerals

1. An upper cover assembly; 11. an upper cover main body; 111. a wire slot; 112. an upper cover threaded hole; 12. a PCB board; 13. a thermistor; 14. a probe; 15. an upper cover; 2. a lower cover assembly; 21. a water inlet pipe; 22. a water outlet pipe; 23. a lower cover main body; 231. a lower cover threaded hole; 24. a flow-through chamber; 5. a wire rod; 6. a connector; 7. a seal ring; 8. fixing screws; 9. the direction of the water flow.

Detailed Description

Referring to fig. 1 to 3, a novel TDS sensor includes: the water-saving water dispenser comprises an upper cover assembly 1, a lower cover assembly 2, a water inlet pipe 21, a water outlet pipe 22, a wire 5 and a connector 6; the upper cover assembly 1 comprises an upper cover main body 11, a PCB 12, a thermistor 13, a probe 14 and an upper cover 15; the PCB 12, the thermistor 13 and the probe 14 are welded and fixed on the upper cover main body 11, and the upper cover 15 covers the upper cover main body 11; the upper cover component 1 and the lower cover component 2 are hermetically arranged, and a sealing ring 7 is arranged between the upper cover component 1 and the lower cover component 2; the lower cover component 2 comprises a lower cover main body 23, a circulation cavity 24, a water inlet pipe 21 and a water outlet pipe 22; the internal cavity of the circulation cavity 24 is rectangular, and the water flowing channel of the water inlet pipe 21, the circulation cavity 24 and the water outlet pipe 22 is S-shaped; one end of the connector 6 is electrically connected to the PCB 12, and the other end is electrically connected to the connector 6.

A sealing ring 7 is arranged between the upper cover component 1 and the lower cover component 2 for sealing, the sealing ring 7 can ensure the water flow tightness in the circulation cavity 24, and prevent moisture from permeating into the PCB 12, which finally results in the short circuit of the product. The water channel of the water inlet pipe 21, the circulation cavity 24 and the water outlet pipe 22 in the novel TDS sensor is S-shaped. Referring to fig. 3, when water flows through the novel TDS sensor, the water flow direction 9 is "S" type, and resistance is generated during water flow circulation, so that the internal cavity in the circulation cavity 24 is always in a full water state when water passes through, and the situation of air convolution blocking or insufficient water is not formed, thereby avoiding TDS value test deviation, reducing the phenomena of error measurement and empty measurement, and improving the detection accuracy.

Referring to fig. 4 and 5, two probes 14 are provided, and the two probes 14 and the thermistor 13 are distributed in a triangular shape. This neotype TDS sensor listen with TDS and synthesize integratively with temperature compensation to it is fixed to adopt the mould shaping, and the length and the interval of probe 14 obtain guaranteeing, and sound construction is reliable, and probe 14 and thermistor 13 distribute rationally.

Referring to fig. 2, the upper cover body 11 includes a slot for accommodating the thermistor 13 and the PCB 12. When the PCB 12 is assembled to the upper cover body 11, the alignment groove 111 is fitted to ensure the assembly in place.

Further, the PCB 12 is fixedly connected to the upper cover body 11 in a glue-pouring manner. After the PCB 12 is mounted on the slot 111, the slot 111 is filled with other filling materials such as epoxy resin, so that the PCB 12 is fixedly connected to the upper cover body 11.

Further, this neotype TDS sensor is still including four fixed screw 8, be equipped with four upper cover screw hole 112 and lower cover screw hole 231 with fixed screw 8 threaded connection on upper cover main part 11 and the lower cover main part 23 respectively, four fixed screw 8 respectively with an upper cover screw hole 112 and a lower cover screw hole 231 threaded connection. However, it should be understood by those skilled in the art that the fastening means between the upper cover body 11 and the lower cover body 23 may be other fastening means besides screw fastening.

Further, the flow-through chamber 24 is circular in shape. This gives the product a fine overall appearance.

Furthermore, in order to ensure that the probe 14, the PCB 12 and the wire 5 are stably connected, a hardware terminal can be arranged at the joint for connection, so that the wire 5 and the probe 14 are stably and reliably connected, the operation is simple and convenient, the stability of the product is improved, and the precision requirement of the product is improved.

The first is a direct contact mode, the PCB 12 is only simply connected with the wires 5 and the probes 14 and is fixed with the probes 14, processing operation is convenient, but after a client uses a sensor, a main board is required to be added for data acquisition and analysis, the mode can be automatically adjusted according to customer requirements, and a product is simple and stable. The second is the module integration mode, is equipped with the integrated data analysis of chip on PCB board 12, carries out the integrated analysis with the TDS value and the temperature compensation value of test, and direct analysis goes out the TDS value, and the function is clear and definite, convenient to use, and the product function is diversified, satisfies the multiple selection of customer.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims

1. The utility model provides a novel TDS sensor, includes upper cover subassembly, lower cover subassembly, inlet tube, outlet pipe, wire rod and connector, its characterized in that:

the upper cover component comprises an upper cover main body, a PCB (printed Circuit Board), a thermistor, a probe and an upper cover; the PCB, the thermistor and the probe are welded and fixed on the upper cover main body, and the upper cover is covered on the upper cover main body; the upper cover component and the lower cover component are arranged in a sealing way, and a sealing ring is arranged between the upper cover component and the lower cover component; the lower cover component comprises a lower cover main body, a circulation cavity, the water inlet pipe and the water outlet pipe; the inner cavity of the circulation cavity is rectangular, and the water flowing channels of the water inlet pipe, the circulation cavity and the water outlet pipe are S-shaped; one end of the connector is electrically connected with the PCB, and the other end of the connector is electrically connected with the connector.

2. The novel TDS sensor of claim 1, characterized by:

the number of the probes is two, and the two probes and the thermistor are distributed in a triangular mode.

3. The novel TDS sensor of claim 1, characterized by:

the upper cover body comprises a wire groove for accommodating the thermistor and the PCB.

4. The novel TDS sensor of claim 1, characterized by:

the PCB is fixedly connected with the upper cover main body in a glue pouring mode.

5. The novel TDS sensor of claim 1, characterized by:

this novel TDS sensor still including four fixed screws, be equipped with respectively in upper cover main part and the lower cover main part four with fixed screw threaded connection's upper cover screw thread hole and lower cover screw thread hole, four fixed screw respectively with one upper cover screw thread hole and lower cover screw thread hole threaded connection.

6. The novel TDS sensor of claim 1, characterized by:

the circulation cavity is circular in shape.