Equipment for monitoring conductivity by using digital instrument

Abstract

The utility model relates to equipment for monitoring conductivity by using a digital instrument, which comprises a middle cylinder, a lower cover is arranged at one end of the middle cylinder, an upper cylinder is arranged at the other end of the middle cylinder, a plug is arranged at one end, far away from the middle cylinder, of the upper cylinder, a four-electrode probe is embedded in the plug, one end of the four-electrode probe extends into the upper cylinder, and the other end of the four-electrode probe extends into the lower cylinder. A circuit board is arranged in the middle cylinder, a conductivity electrode and a temperature electrode are sequentially arranged on the left side of the middle cylinder in the up-down direction, and one end of the circuit board is arranged on the conductivity electrode and the temperature electrode. Compared with a conventional graphite structure, the design has the advantages that loss is not prone to occurring, the service life is long, cleaning is easier, and the machining cost is low; the device is small in interference, wide in measurement range and high in measurement precision, the lower cover, the middle cylinder, the upper cylinder and the plug are in butt joint in a threaded butt joint mode, the device is small in overall size and light in weight, later disassembly and maintenance are facilitated, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to water quality monitoring technical field especially utilize digital instrument to carry out conductivity monitoring's equipment. BACKGROUND

[0002] Water quality monitoring is to monitor and measure the types of pollutants in water, the concentrations of various pollutants and their trends, and sometimes to measure flow rate and flow. When monitoring water quality, conductivity monitoring equipment is needed.

[0003] Traditional water quality monitoring instruments usually use chemical methods or physical sensors for measurement. These methods often have problems such as slow measurement speed, susceptibility to environmental interference, high maintenance cost, etc. With the development of technology, modern water quality monitoring instruments tend to be integrated, automated and intelligent. Conductivity, as an important parameter in water quality monitoring, directly affects the accuracy of water quality assessment in terms of measurement accuracy and stability. The conductivity sensors on the market are basically designed with graphite electrodes, which are easily worn out, causing electrode drift and inaccurate data. SUMMARY

[0004] The utility model discloses a conductivity monitoring device using digital instruments to solve the problems of existing technology, such as high interference, high maintenance cost, small measurement range, low measurement accuracy, large structure size, high manufacturing cost and short service life.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A conductivity monitoring device using digital instruments comprises a middle cylinder, a lower cover arranged at one end of the middle cylinder, an upper cylinder arranged at the other end of the middle cylinder, a plug arranged at the end of the upper cylinder away from the middle cylinder, a four-electrode probe embedded on the plug, the four-electrode probe extending into the upper cylinder at one end, a circuit board arranged in the middle cylinder, a conductivity electrode and a temperature electrode arranged on the left side of the middle cylinder in the up-down direction, and one end of the circuit board arranged on the conductivity electrode and the temperature electrode, a temperature and humidity acquisition module, a data processing and control module, and an electrode potential detection module arranged in the top of the middle cylinder cavity in the left-right direction.

[0007] Preferably, a humidity sensor is arranged at the bottom of the middle cylinder cavity.

[0008] Preferably, a first external thread is arranged on the surface of both ends of the middle cylinder, a first internal thread matched with the first external thread is arranged on the inner ring of the lower cover and the upper cylinder, a second external thread is arranged at one end of the plug, and a second internal thread matched with the second external thread is arranged at the end of the upper cylinder close to the plug.

[0009] Preferably, the upper barrel and the middle barrel are provided with a first O-shaped ring on the side close to each other, and the left end of the middle barrel is embedded with a second O-shaped ring used in cooperation with the conductivity electrode and the temperature electrode.

[0010] Preferably, the plug and the upper barrel are sequentially attached with two groups of fluorine rubber rings and one group of press rings on the side close to each other in the left-right direction.

[0011] Preferably, the upper barrel is provided with a separation ring, and the left end of the separation ring is attached to the middle barrel.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The equipment for monitoring conductivity by using digital instrument, through setting circuit board and four-electrode probe composed of two pairs of electrodes, the current electrode of four-electrode probe is titanium alloy cylindrical, compared with conventional graphite structure, it is more not easy to wear, long service life, and more easily to clean, low processing cost, when measuring, an alternating current signal is applied to both ends thereof, and the electric field is established in the solution through the current, the influence of polarization effect is eliminated, at this time, the measured solution can be equivalent to pure resistance, the voltage electrode is circular ring, is accurately coaxial with the current electrode respectively, and is used to induct the voltage generated by the current electrode, the design of data processing and control module, the alternating current between the current electrode is controlled through feedback circuit, so that the current is maintained constant, when the conductivity of the solution changes, the voltage response of both ends of the voltage electrode changes, the voltage of the voltage electrode loop corresponds to the conductivity of the measured solution in certain relationship, the online monitoring of conductivity is realized through the voltage monitoring of the voltage electrode, and the design of conductivity electrode, electrode potential detection module, temperature and humidity acquisition module and temperature electrode, so that the instrument has multi-point curve calibration function and temperature compensation function, corresponding calibration can be carried out, the data accuracy is guaranteed, the digital instrument is adopted, so that the whole equipment can have small interference, wide measurement range and high measurement precision, and the lower cover, the middle barrel, the upper barrel and the plug are connected in a threaded manner, so that the whole equipment has small size and light weight, and the equipment is convenient to disassemble and maintain in the later period, and the maintenance cost is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 The utility model provides a kind of equipment for monitoring conductivity by using digital instrument of structure schematic view proposed by the utility model;

[0015] Fig. 2 The utility model provides a kind of equipment for monitoring conductivity by using digital instrument of structure sectional view proposed by the utility model;

[0016] Fig. 3 The utility model provides a kind of equipment for monitoring conductivity by using digital instrument of structure side view proposed by the utility model.

[0017] In the figure: 1, middle cylinder; 2, lower cover; 3, upper cylinder; 4, separation ring; 5, plug; 6, fluorine rubber ring; 7, compression ring; 8, four-electrode probe; 9, first O-ring; 10, second O-ring; 11, circuit board; 12, conductivity electrode; 13, temperature electrode; 14, temperature and humidity acquisition module; 15, data processing and control module; 16, electrode potential detection module; 17, humidity sensor. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0019] EMBODIMENT

[0020] WITH REFERENCE Figs. 1-3 A device for monitoring conductivity by using a digital instrument, comprising a middle cylinder 1, one end of the middle cylinder 1 is provided with a lower cover 2, the other end of the middle cylinder 1 is provided with an upper cylinder 3, the upper cylinder 3 is sleeved with a separation ring 4, and the left end of the separation ring 4 is attached to the middle cylinder 1, the design of the separation ring 4 facilitates distinguishing the positions of the upper cylinder 3 and the middle cylinder 1, the end of the upper cylinder 3 away from the middle cylinder 1 is provided with a plug 5, the surfaces of the two ends of the middle cylinder 1 are provided with first external threads, the inner circles of the lower cover 2 and the upper cylinder 3 close to each other are provided with first internal threads matched with the first external threads, one end of the plug 5 is provided with second external threads, the end of the upper cylinder 3 close to the plug 5 is provided with second internal threads matched with the second external threads, the design of the first external threads, the first internal threads, the second external threads and the second internal threads can quickly disassemble and assemble the middle cylinder 1, the lower cover 2, the upper cylinder 3 and the plug 5, facilitating disassembling and maintaining the whole device, the plug 5 is embedded with a four-electrode probe 8, and one end of the four-electrode probe 8 extends into the upper cylinder 3, the side of the plug 5 and the upper cylinder 3 close to each other is attached with two groups of fluorine rubber rings 6 and one group of compression rings 7 in sequence along the left-right direction, the design of the fluorine rubber rings 6 and the compression rings 7 improves the sealing property between the plug 5 and the upper cylinder 3, avoiding liquid directly entering the inside of the device to damage the device;

[0021] WITH REFERENCE Fig. 2 AND Fig. 3The utility model discloses a graphite humidity and temperature measuring device, including lower cover 2, middle cylinder 1 and upper cylinder 3, the lower cover 2 is connected with the middle cylinder 1, and the middle cylinder 1 is connected with the upper cylinder 3, the lower cover 2 is provided with the threaded hole 4, and the threaded hole 4 is connected with the middle cylinder 1, the middle cylinder 1 is provided with the threaded hole 6, and the threaded hole 6 is connected with the upper cylinder 3, the threaded hole 4 and the threaded hole 6 are provided with the threaded hole 7, and the threaded hole 7 is connected with the plug 5, the middle cylinder 1 is provided with circuit board 11, the left side of middle cylinder 1 is provided with electric conductivity electrode 12 and temperature electrode 13 along up-down direction in proper order and one end of circuit board 11 is arranged on electric conductivity electrode 12 and temperature electrode 13, and the bottom of the inner chamber of middle cylinder 1 is provided with humidity sensor 17, by setting humidity sensor 17, it is convenient to monitor whether the inside of equipment has the leakage phenomenon in real time, it is helpful to discover the fault in time and timely maintenance, avoid damaging equipment, further prolong the service life of equipment, the top of the inner chamber of middle cylinder 1 is provided with temperature and humidity acquisition module 14, data processing and control module 15 and electrode potential detection module 16 along left-right direction in proper order, the design of the utility model, compared with the conventional graphite structure, is more not easy to wear, and the service life is long, and is more easily cleaned, and the processing cost is low, and the whole equipment can be made to be less interference, wide measurement range and high measurement precision, and the whole equipment adopts the way of screwing butt joint to butt joint lower cover 2, middle cylinder 1, upper cylinder 3 and plug 5, makes the overall size of equipment smaller, and the weight is light, and the post -period disassembly maintenance is convenient, greatly reduces the maintenance cost, the side of upper cylinder 3 and middle cylinder 1 close to each other is provided with first O type ring 9, and the left end of middle cylinder 1 is embedded with second O type ring 10 used in cooperation with electric conductivity electrode 12 and temperature electrode 13, the design of first O type ring 9 and second O type ring 10 is convenient to seal the butt joint, avoids liquid to enter the inside of equipment, and damages the equipment.

[0022] The utility model discloses, utilize the thread butt joint of first outer thread and first inner thread, can with lower cover 2 and upper cylinder 3 quick dismouting of middle cylinder 1, utilize the thread butt joint of second outer thread and second inner thread, can with upper cylinder 3 quick dismouting of plug 5, the whole equipment adopts the mode of fixed with thread butt joint, not only make the overall size of equipment smaller, light in weight, and convenient post -mortem disassembly maintenance, greatly reduced the maintenance cost of later period, four electrode probe 8 is constituted by two pairs of electrodes simultaneously, and the current electrode of four electrode probe 8 is titanium alloy cylindrical, the design of titanium alloy material, compared with conventional graphite structure, more not easy to wear, long service life, and subsequent more easily to clean, simultaneously processing cost is low, when the user measures at its both ends and through the current of one ac signal, establish electric field in solution, eliminate the influence of polarization, the measured solution can be equivalent to pure resistance at this time, voltage electrode is circular ring type, respectively with current electrode accurate coaxial, to induct the voltage generated by current electrode, and under the cooperation of data processing and control module 15 and circuit board 11, through feedback circuit control the alternating current between current electrode, make the current maintain constant, when the conductivity of solution changes, the voltage response of voltage electrode both ends changes, the voltage of voltage electrode loop corresponds to the conductivity of measured solution and exists certain relation, realize the on -line monitoring of conductivity through the voltage monitoring of voltage electrode, and the design of conductivity electrode 12, circuit board 11, electrode potential detection module 16, temperature and humidity acquisition module 14 and temperature electrode 13, make the instrument inside with multiple point curve calibration function, temperature compensation function, can carry out corresponding calibration, guarantee data accuracy, so that the whole equipment can be little interference, wide measurement range and high measurement accuracy.

[0023] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. An apparatus for conductivity monitoring with a digital instrument comprising a mid-cylinder (1), characterized in that: One end of the middle cylinder (1) is provided with a lower cover (2), the other end of the middle cylinder (1) is provided with an upper cylinder (3), the upper cylinder (3) is provided with a plug (5) away from one end of the middle cylinder (1), the plug (5) is embedded with a four-electrode probe (8), and one end of the four-electrode probe (8) extends into the upper cylinder (3), the middle cylinder (1) is provided with a circuit board (11), the left side of the middle cylinder (1) is sequentially provided with an electrical conductivity electrode (12) and a temperature electrode (13) in the up-down direction, and one end of the circuit board (11) is arranged on the electrical conductivity electrode (12) and the temperature electrode (13), the top of the inner cavity of the middle cylinder (1) is sequentially provided with a temperature and humidity collection module (14), a data processing and control module (15) and an electrode potential detection module (16) in the left-right direction.

2. An apparatus for monitoring conductivity using a digital instrument according to claim 1, wherein, The bottom of the inner cavity of the middle cylinder (1) is provided with a humidity sensor (17).

3. An apparatus for monitoring conductivity using a digital instrument as claimed in claim 1, wherein, The surfaces of both ends of the middle cylinder (1) are provided with first external threads, the inner rings of the lower cover (2) and the upper cylinder (3) that are close to each other are provided with first internal threads that are used in cooperation with the first external threads, one end of the plug (5) is provided with second external threads, and one end of the upper cylinder (3) close to the plug (5) is provided with second internal threads that are used in cooperation with the second external threads.

4. The apparatus for monitoring conductivity using a digital instrument of claim 1, wherein, The side of the upper cylinder (3) and the middle cylinder (1) that are close to each other is provided with a first O-shaped ring (9), and the left end of the middle cylinder (1) is embedded with a second O-shaped ring (10) that is used in cooperation with the electrical conductivity electrode (12) and the temperature electrode (13).

5. The apparatus for monitoring conductivity using a digital instrument of claim 1, wherein, The side of the plug (5) and the upper cylinder (3) that are close to each other is sequentially attached with two groups of fluorine rubber rings (6) and one group of press rings (7) in the left-right direction.

6. The apparatus for monitoring conductivity using a digital instrument of claim 1, wherein, The upper cylinder (3) is provided with a separation ring (4), and the left end of the separation ring (4) is attached to the middle cylinder (1).

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