A salt electrolyzer

Abstract

The utility model discloses a salt electrolyzer, which comprises a body, an electrolytic cell, a solution electrolysis head, a solution detection head, and a control host; the electrolytic cell is installed on the body, an electrolytic cell cavity is formed inside the electrolytic cell, and the electrolytic cell is provided with a liquid inlet and a liquid outlet communicated with the electrolytic cell cavity; the solution electrolysis head is installed on the electrolytic cell, and the solution electrolysis head has a first electrolysis electrode and a second electrolysis electrode extending into the electrolytic cell cavity; the solution detection head is installed on the detection cell, and the solution detection head has a first detection electrode and a second detection electrode extending into the electrolytic cell cavity; the control host is installed on the body, and the control host is electrically connected to the solution electrolysis head and the solution detection head respectively. The utility model has the advantage of high salt concentration detection accuracy.

Description

Technical Field

[0001] The utility model relates to the field of salt electrolysis, in particular to a salt electrolyzer. Background Art

[0002] A salt electrolyzer is a device that electrolyzes a salt solution to form sodium hypochlorite from the salt (sodium chloride) in the salt solution. Sodium hypochlorite has a disinfecting effect. The electrolysis efficiency of existing salt electrolyzers is greatly affected by the salt concentration of the salt solution. Therefore, existing salt electrolyzers generally collect the voltage of the two electrolysis electrodes to obtain the conductivity between the two electrolysis electrodes, and convert the conductivity into salt concentration accordingly. The salt electrolyzer then adjusts the current of the electrolysis electrodes according to the current salt concentration. However, since the current of the electrolysis electrodes is large and the electrolysis electrodes are prone to polarization problems, the existing salt concentration detection has the problems of low detection accuracy and large detection deviation.

[0003] In view of the above problems, it is necessary to study a salt electrolyzer that can accurately detect the salt concentration. Utility Model Content

[0004] The utility model aims to provide a salt electrolyzer which can accurately detect the salt concentration.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] A salt electrolyzer comprises a body, an electrolytic cell, a solution electrolysis head, a solution detection head, and a control host; the electrolytic cell is installed on the body, an electrolytic cell cavity is formed inside the electrolytic cell, and the electrolytic cell is provided with a liquid inlet and a liquid outlet communicated with the electrolytic cell cavity; the solution electrolysis head is installed on the electrolytic cell, and the solution electrolysis head has a first electrolysis electrode and a second electrolysis electrode extending into the electrolytic cell cavity; the solution detection head is installed on the detection cell, and the solution detection head has a first detection electrode and a second detection electrode extending into the electrolytic cell cavity; the control host is installed on the body, and the control host is electrically connected to the solution electrolysis head and the solution detection head respectively.

[0007] The solution detection head also has a temperature probe extending into the electrolytic cell cavity.

[0008] The control host includes a microprocessor, a power module, a solution electrolysis circuit and a solution detection circuit. The power module is electrically connected to the microprocessor, the solution detection circuit and the solution electrolysis circuit respectively. The microprocessor is electrically connected to the first electrolysis electrode and the second electrolysis electrode through the solution electrolysis circuit. The microprocessor is electrically connected to the first detection electrode and the second detection electrode through the solution detection circuit.

[0009] The solution detection circuit includes an excitation unit and a detection unit; the excitation unit includes a square wave generator for generating a square wave signal, the square wave signal switches between a high level and a zero level, and the output end of the square wave generator is electrically connected to the excitation end of the detection unit; the detection unit includes a power resistor, a first detection branch, a second detection branch and a third detection branch; the first detection branch includes a first resistor and a first capacitor connected in series, the first end of the first detection branch is electrically connected to the first detection electrode, the second end of the second detection branch is grounded, and the common node of the first resistor and the first capacitor is electrically connected to the first output end of the detection unit; the second detection branch includes a second resistor and a third resistor connected in series, the first end of the second detection branch is electrically connected to the first end of the power resistor and The second detection electrode, the second end of the second detection branch is grounded, and the common node of the second resistor and the third resistor is electrically connected to the second output end of the detection unit; the third detection branch includes a fourth resistor and a fifth resistor connected in series, the first end of the third detection branch is electrically connected to the first detection electrode, the second end of the third detection branch is grounded, and the common node of the fourth resistor and the fifth resistor is electrically connected to the third output end of the detection unit; the second end of the power resistor is electrically connected to the excitation end of the detection unit; the microprocessor is electrically connected to the first output end, the second output end and the third output end of the detection unit through the first signal processing circuit, the second signal processing circuit and the third signal processing circuit, respectively, and the power supply module is connected to the power supply end of the square wave generator and the power supply end of the microprocessor respectively.

[0010] The first end of the first resistor is connected to the first end of the first detection branch, the second end of the first resistor and the first end of the first capacitor are connected to the first output end of the detection unit, and the second end of the first capacitor is connected to the second end of the first detection branch.

[0011] The first end of the first capacitor is connected to the first end of the first detection branch, the second end of the first capacitor and the first end of the first resistor are connected to the first output end of the detection unit, and the second end of the first resistor is connected to the second end of the first detection branch.

[0012] The solution detection circuit includes an excitation unit and a detection unit; the excitation unit includes a square wave generator for generating a square wave signal, the square wave signal switches between a high level and a zero level, and the output end of the square wave generator is electrically connected to the excitation end of the detection unit; the detection unit includes a first capacitor, a first resistor, a second resistor, a third resistor and a fourth resistor; the first end of the first capacitor and the first end of the fourth resistor are electrically connected to the excitation end of the detection unit, the second end of the first capacitor and the first end of the second resistor are electrically connected to the second detection electrode, the second end of the second resistor and the first end of the third resistor are electrically connected to the first output end of the detection unit, the first end of the first resistor is electrically connected to the first detection electrode, and the second end of the first resistor, the second end of the third resistor and the first end of the fourth resistor are grounded; the microprocessor is electrically connected to the first output end and the second output end of the detection unit through the first signal processing circuit and the second signal processing circuit, respectively, and the power supply module is connected to the power supply end of the square wave generator and the power supply end of the microprocessor respectively.

[0013] In one cycle time of the square wave signal generated by the square wave generator, the high level duration of the square wave signal is 0.01ms~500ms, and the high level duration of the square wave signal is less than or equal to the low level duration.

[0014] The high level voltage of the square wave signal generated by the square wave generator is 3V~48V.

[0015] The solution detection head includes a detection connection seat, a detection connection cover, and the first detection electrode and the second detection electrode. The detection connection seat is provided with a connection joint and two electrode connection wires electrically connected to the connection joint. The two electrode connection wires are provided with plug connectors. The first detection electrode and the second detection electrode are respectively plugged in and matched with the plug connectors of the two electrode connection wires. The detection connection cover is detachably connected to the detection connection seat. The detection connection cover covers the two electrode connection wires and is provided with two electrode positioning holes for respectively sleeved the first detection electrode and the second detection electrode.

[0016] The solution detection head also includes a transmission connector plugged with the connection connector, and the transmission connector has a transmission wire electrically connected to the control host.

[0017] The solution detection head also includes a detection limit cover, which is threadedly connected to the detection connection seat, and a connection plug is sandwiched between the limit cover and the detection connection seat.

[0018] The two ends of the electrolytic cell are respectively provided with a first mounting port and a second mounting port, and the solution electrolysis head and the solution detection head are respectively detachably mounted on the first mounting port and the second mounting port.

[0019] The first mounting opening and the second mounting opening are respectively screwed with a first mounting cover and a second mounting cover. The first mounting cover and the edge of the first mounting opening clamp the solution electrolysis head, and the second mounting cover and the edge of the second mounting opening clamp the solution detection head.

[0020] After adopting the above scheme, the salt electrolyzer of the utility model has an independently arranged solution detection head, and the control host detects the salt concentration of the salt solution through the first detection electrode and the second detection electrode of the solution detection head; such arrangement enables the utility model to effectively avoid the error existing in the existing method of using electrolytic electrodes to detect the salt concentration of the salt solution when detecting the salt concentration of the salt solution, thereby accurately detecting the salt concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the first embodiment of the present invention is shown in FIG. Figure 1 .

[0022] Figure 2 The structure of the first embodiment of the present invention is shown in FIG. Figure 2 .

[0023] Figure 3 for Figure 2 AA section view.

[0024] Figure 4 This is a schematic structural diagram of a solution detection head according to the first embodiment of the present utility model.

[0025] Figure 5 This is a structural exploded view of the solution detection head of the first embodiment of the utility model.

[0026] Figure 6 This is a schematic diagram of the circuit structure of the first embodiment of the utility model.

[0027] Figure 7 This is a schematic diagram of the circuit structure of the second embodiment of the present utility model.

[0028] Figure 8 This is a schematic diagram of the circuit structure of the third embodiment of the present utility model.

[0029] Description of labels:

[0030] Ontology 1,

[0031] electrolytic cell 2, electrolytic cell cavity 20, liquid inlet 21, liquid outlet 22, first mounting port 23, second mounting port 24, first mounting cover 25, second mounting cover 26,

[0032] Solution electrolysis head 3, first electrolysis electrode 31, second electrolysis electrode 32,

[0033] Solution detection head 4, first detection electrode 41, second detection electrode 42, detection connection seat 43, connection joint 431, electrode connection line 432, plug joint 4321, detection connection cover 44, electrode positioning hole 441, probe positioning hole 442, transmission joint 45, transmission wire 451, detection limit cover 46, temperature probe 47,

[0034] Control host 5,

[0035] Microprocessor 51,

[0036] Power module 52,

[0037] Solution electrolysis circuit 53,

[0038] Solution detection circuit 54,

[0039] Excitation unit 541, square wave generator 5411,

[0040] Detection unit 542,

[0041] The first detection branch 5421, the second detection branch 5422, the third detection branch 5423, the power resistor R0, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, the first capacitor C1,

[0042] The first signal processing circuit 55, the second signal processing circuit 56,

[0043] The third signal processing circuit 57,

[0044] Wireless communication circuit 58,

[0045] Display circuit 59. DETAILED DESCRIPTION

[0046] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0047] Embodiment 1:

[0048] Cooperate Figures 1 to 6As shown, in the first embodiment of the present invention, a salt electrolyzer of the present invention comprises a body 1, an electrolytic cell 2, a solution electrolysis head 3, a solution detection head 4, and a control host 5; wherein the electrolytic cell 2 is mounted on the body 1, an electrolytic cell cavity 20 is formed inside the electrolytic cell 2, and the electrolytic cell 2 is provided with a liquid inlet 21 and a liquid outlet 22 communicated with the electrolytic cell cavity 20 for the solution to enter and exit the electrolytic cell cavity 20; the solution electrolysis head 3 is mounted on the electrolytic cell 2, and the control host 5 electrolyzes the salt solution through the solution electrolysis head 3, and the solution electrolysis head 3 has a first electrolysis electrode 31 and a second electrolysis electrode 32 extending into the electrolytic cell cavity 20; the solution detection head 4 is mounted on the detection tank, and the control host 5 detects the salt concentration of the salt solution through the solution detection head 4, and the solution detection head 4 has a first detection electrode 41 and a second detection electrode 42 extending into the electrolytic cell cavity 20; the control host 5 is mounted on the body 1, and the control host 5 is electrically connected to the solution electrolysis head 3 and the solution detection head 4, respectively.

[0049] In the utility model, the salt electrolyzer of the utility model has an independently arranged solution detection head 4, and the control host 5 detects the salt concentration of the salt solution through the first detection electrode 41 and the second detection electrode 42 of the solution detection head 4; such arrangement enables the utility model to effectively avoid the error existing in the existing method of using electrolytic electrodes to detect the salt concentration of the salt solution when detecting the salt concentration of the salt solution, thereby accurately detecting the salt concentration.

[0050] In the first embodiment of the utility model, the two ends of the electrolytic cell 2 are respectively provided with a first mounting port 23 and a second mounting port 24, and the solution electrolysis head 3 and the solution detection head 4 are respectively detachably mounted on the first mounting port 23 and the second mounting port 24, so that it is convenient to replace and repair the solution electrolysis head 3 and the solution detection head 4. Specifically, the first mounting port 23 and the second mounting port 24 are respectively screwed with a first mounting cover 25 and a second mounting cover 26, the first mounting cover 25 and the edge of the first mounting port 23 clamp the solution electrolysis head 3, and the second mounting cover 26 and the edge of the second mounting port 24 clamp the solution detection head 4; such a configuration makes it easy to disassemble and assemble the solution electrolysis head 3 and the solution detection head 4.

[0051] In the first embodiment of the present utility model, the solution detection head 4 may include a detection connection seat 43, a detection connection cover 44, and the first detection electrode 41 and the second detection electrode 42; wherein, the detection connection seat 43 is provided with a connection joint 431 and two electrode connection wires 432 electrically connected to the connection joint 431, and the two electrode connection wires 432 are provided with a plug connector 4321, and the first detection electrode 41 and the second detection electrode 42 are respectively plugged into and matched with the plug connectors 4321 of the two electrode connection wires 432, the detection connection cover 44 is detachably connected to the detection connection seat 43, the detection connection cover 44 covers the two electrode connection wires 432 to protect the electrode connection wires 432, and the detection connection cover 44 is provided with two electrode positioning holes 441 respectively sleeved with the first detection electrode 41 and the second detection electrode 42 to position the first detection electrode 41 and the second detection electrode 42; such a configuration enables the utility model to facilitate the replacement of the first detection electrode 41 and the second detection electrode 42, and can effectively extend the service life of the solution detection head 4.

[0052] In the first embodiment of the present utility model, the solution detection head 4 further includes a transmission connector 45 plugged with the connection connector 431, and the transmission connector 45 has a transmission wire 451 electrically connected to the control host 5 so that the solution detection head 4 is electrically connected to the control host 5. In addition, the solution detection head 4 further includes a detection limit cover 46, which is screwed to the detection connection seat 43 and the limit cover and the detection connection seat 43 sandwich the connection plug, thereby effectively preventing the transmission connector 45 from falling off.

[0053] In the first embodiment of the present invention, the solution detection head 4 also has a temperature probe 47 extending into the electrolytic cell cavity 20. The control host 5 can detect the temperature of the salt solution through the temperature probe 47. The temperature probe 47 can be set in the detection connection seat 43 and electrically connected to the connection connector 431. The detection connection cover 44 is provided with a probe positioning hole 442 for housing the temperature probe 47 to position the temperature probe 47.

[0054] In the first embodiment of the present utility model, the control host 5 includes a microprocessor 51, a power module 52, a solution electrolysis circuit 53 and a solution detection circuit 54; the power module 52 is electrically connected to the microprocessor 51, the solution detection circuit 54 and the solution electrolysis circuit 53 respectively to supply power to the microprocessor 51, the solution detection circuit 54 and the solution electrolysis circuit 53, the microprocessor 51 is electrically connected to the first electrolysis electrode 31 and the second electrolysis electrode 32 through the solution electrolysis circuit 53, and the microprocessor 51 is electrically connected to the first detection electrode 41 and the second detection electrode 42 through the solution detection circuit 54. Among them, the structure of the solution electrolysis circuit 53 is the prior art and will not be elaborated here; the power module 52 can adopt a switching power supply or a linear power supply or a combination of a switching power supply and a linear power supply.

[0055] In the first embodiment of the present utility model, the solution detection circuit 54 includes an excitation unit 541 and a detection unit 542; wherein the excitation unit 541 includes a square wave generator 5411 for generating a square wave signal, the square wave signal is switched between a high level and a zero level, and the output end of the square wave generator 5411 is electrically connected to the excitation end of the detection unit 542; the detection unit 542 includes a power resistor R0, a first detection branch 5421, a second detection branch 5422 and a third detection branch 5423; the first detection branch 5421 includes a first resistor R1 and a first capacitor C1 connected in series, a first end of the first detection branch 5421 is electrically connected to the first detection electrode 41, a second end of the second detection branch 5422 is grounded, and a common node of the first resistor R1 and the first capacitor C1 is electrically connected to the first output end of the detection unit 542; the second detection branch 5422 includes a second resistor R2 and a third resistor R3 connected in series, and a second detection branch 5422 includes a second resistor R3 and a third resistor R4 connected in series. One end is electrically connected to the first end of the power resistor R0 and the second detection electrode 42, the second end of the second detection branch 5422 is grounded, and the common node of the second resistor R2 and the third resistor R3 is electrically connected to the second output end of the detection unit 542; the third detection branch 5423 includes a fourth resistor R4 and a fifth resistor R5 connected in series, the first end of the third detection branch 5423 is electrically connected to the first detection electrode 41, the second end of the third detection branch 5423 is grounded, and the common node of the fourth resistor R4 and the fifth resistor R5 is electrically connected to the third output end of the detection unit 542; the second end of the power resistor R0 is electrically connected to the excitation end of the detection unit 542; the microprocessor 51 is electrically connected to the first output end, the second output end and the third output end of the detection unit 542 through the first signal processing circuit 55, the second signal processing circuit 56 and the third signal processing circuit 57, respectively, and the power supply module 52 is connected to the power supply end of the square wave generator 5411 and the power supply end of the microprocessor 51 respectively.

[0056] In the first embodiment of the utility model, when the salt concentration of the salt solution is detected, the first detection electrode 41 and the second detection electrode 42 are both in contact with the salt solution to be detected, and the square wave generator 5411 of the excitation unit 541 generates a square wave signal and outputs it to the detection unit 542, so that a voltage difference is generated between the first detection electrode 41 and the second detection electrode 42, and the microprocessor 51 obtains the output voltages of the first output end, the second output end and the third output end of the detection unit 542 respectively through the first signal processing circuit 55, the second signal processing circuit 56 and the third signal processing circuit 57, and then the microprocessor 51 calculates the conductivity between the first detection electrode 41 and the second detection electrode 42 in combination with the resistance values ​​of the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4 and the fifth resistor R5, and then the microprocessor 51 converts the conductivity into the corresponding salt concentration, thereby realizing the detection of the salt concentration of the salt solution. To improve the accuracy, the microprocessor 51 can convert the conductivity into the corresponding salt concentration in combination with the salt solution temperature detected by the temperature probe 47. Among them, the specific methods for directly converting the conductivity into the corresponding salt concentration and converting the conductivity into the corresponding salt concentration in combination with the temperature are conventional designs in the art and will not be elaborated here.

[0057] In the first embodiment of the present utility model, the first end of the first resistor R1 is connected to the first end of the first detection branch 5421, the second end of the first resistor R1 and the first end of the first capacitor C1 are connected to the first output end of the detection unit 542, and the second end of the first capacitor C1 is connected to the second end of the first detection branch 5421; the first end of the second resistor R2 is connected to the first end of the second detection branch 5422, the second end of the second resistor R2 and the first end of the third resistor R3 are connected to the second output end of the detection unit 542, and the second end of the third resistor R3 is connected to the second end of the first detection branch 5421. The first end of the fourth resistor R4 is connected to the first end of the second detection branch 5422, the second end of the fourth resistor R4 and the first end of the fifth resistor R5 are connected to the second output end of the detection unit 542, and the second end of the fifth resistor R5 is connected to the second end of the first detection branch 5421. After such a setting, the calculation formula of the conductivity between the first detection electrode 41 and the second detection electrode 42 of the utility model is:

[0058] G={(r4+r5)*U3 / (r5*r1)-U1 / r1} / {(r2+r3)*U2 / r3 - (r4+r5)*U3 / r5};

[0059] Among them, G is the conductivity between the first detection electrode 41 and the second detection electrode 42, U1 is the output voltage of the first output end of the detection unit 542, U2 is the output voltage of the second output end of the detection unit 542, U3 is the voltage of the third output end of the detection unit 542, r1 is the resistance value of the first resistor R1, r2 is the resistance value of the second resistor R2, r3 is the resistance value of the third resistor R3, r4 is the resistance value of the fourth resistor R4, and r5 is the resistance value of the fifth resistor R5.

[0060] The square wave signal generated by the square wave generator 5411 of the utility model switches back and forth between a high level and a zero level, so that when the square wave signal is at a high level, the square wave signal generated by the square wave generator 5411 switches back and forth between a high level and a zero level, so that when the square wave signal is at a high level, the first detection electrode 41 is at a low level and the second detection electrode 42 is at a high level; and when the square wave signal is at a low level, the first capacitor C1 discharges so that the first detection electrode 41 is at a high level and the second detection electrode 42 is at a low level; in this way, the first detection electrode 41 and the second detection electrode 42 will not produce polarization, thereby avoiding changes in the surface electrochemical characteristics of the first detection electrode 41 and the second detection electrode 42 due to polarization, and at the same time, it can also reduce the accumulation of scale on the first detection electrode 41 and the second detection electrode 42 to change the electrode constant, thereby effectively ensuring the detection accuracy of the conductivity, and then ensuring the detection accuracy of the salt concentration.

[0061] In the first embodiment of the present invention, within one cycle of the square wave signal generated by the square wave generator 5411, the high level duration of the square wave signal is 0.01ms~500ms, and the high level duration of the square wave signal is less than or equal to the low level duration, so that the high level duration is short and the first capacitor C1 can be effectively discharged, which can ensure that the first detection electrode 41 and the second detection electrode 42 will not generate polarization. In addition, the high level voltage of the square wave signal generated by the square wave generator 5411 is 3V~48V, so that the current between the first detection electrode 41 and the second detection electrode 42 is small and the power-on time is short, so that the first detection electrode 41 and the second detection electrode 42 basically do not electrolyze the salt solution, further ensuring that the first detection electrode 41 and the second detection electrode 42 will not generate polarization.

[0062] In the first embodiment of the present utility model, the first signal processing circuit 55, the second signal processing circuit 56 and the third signal processing circuit 57 adopt a signal filtering and amplifying circuit, which can filter and amplify the signal to ensure that the microprocessor 51 can accurately obtain the output voltage of the first output terminal, the second output terminal and the third output terminal of the detection unit 542; the signal filtering and amplifying circuit is a commonly used circuit and will not be elaborated here.

[0063] In the first embodiment of the present utility model, the control host 5 may further include a wireless communication circuit 58 and a display circuit 59 connected to the microprocessor 51. The wireless communication circuit 58 may be a Bluetooth communication circuit or a WiFi communication circuit, and the wireless communication circuit 58 may enable the microprocessor 51 to communicate wirelessly with an external smart terminal (such as a smart phone, a tablet computer), so that the user can obtain the detection result of the entire solution detection circuit 54 structure through the smart terminal; and the display circuit 59 may be an LCD display circuit 59 or a digital tube display circuit 59, and the microprocessor 51 can realize the detection result (such as the salt concentration of the salt solution, the temperature of the salt solution) through the display circuit 59, so that the user can intuitively understand the detection result.

[0064] In the first embodiment of the present invention, the first detection electrode 41 and the second detection electrode 42 are made of titanium, copper, titanium alloy or stainless steel, so that the first detection electrode 41 and the second detection electrode 42 have good corrosion resistance, ensuring the service life of the first detection electrode 41 and the second detection electrode 42.

[0065] Embodiment 2:

[0066] Cooperate Figure 7 As shown, the difference between the second embodiment of the present invention and the first embodiment is that the connection structure of the first resistor R1 and the first capacitor C1 of the first detection branch 5421 is different.

[0067] Specifically, in Embodiment 2 of the present invention, the first end of the first capacitor C1 is connected to the first end of the first detection branch 5421, the second end of the first capacitor C1 and the first end of the first resistor R1 are connected to the first output end of the detection unit 542, and the second end of the first resistor R1 is connected to the second end of the first detection branch 5421.

[0068] In the second embodiment of the present invention, the calculation formula of the conductivity between the first detection electrode 41 and the second detection electrode 42 is:

[0069] G=(U1 / r1) / {(r2+r3)*U2 / r3-(r4+r5)*U3 / r5};

[0070] Among them, G is the conductivity between the first detection electrode 41 and the second detection electrode 42, U1 is the output voltage of the first output end of the detection unit 542, U2 is the output voltage of the second output end of the detection unit 542, U3 is the voltage of the third output end of the detection unit 542, r1 is the resistance value of the first resistor R1, r2 is the resistance value of the second resistor R2, r3 is the resistance value of the third resistor R3, r4 is the resistance value of the fourth resistor R4, and r5 is the resistance value of the fifth resistor R5.

[0071] Embodiment three:

[0072] Cooperate Figure 8 As shown, the difference between the third embodiment of the present invention and the first embodiment is that the structure of the solution detection circuit 54 is different.

[0073] In the third embodiment of the present utility model, the solution detection circuit 54 includes an excitation unit 541 and a detection unit 542; wherein the excitation unit 541 includes a square wave generator 5411 for generating a square wave signal, the square wave signal is switched between a high level and a zero level, and the output end of the square wave generator 5411 is electrically connected to the excitation end of the detection unit 542; the detection unit 542 includes a first capacitor C1, a first resistor R1, a second resistor R2, a third resistor R3 and a power resistor R0; the first end of the first capacitor C1 and the first end of the power resistor R0 are electrically connected to the excitation end of the detection unit 542, and the second end of the first capacitor C1 The first end of the second resistor R2 is electrically connected to the second detection electrode 42, the second end of the second resistor R2 and the first end of the third resistor R3 are electrically connected to the first output end of the detection unit 542, the first end of the first resistor R1 is electrically connected to the first detection electrode 41, the second end of the first resistor R1, the second end of the third resistor R3 and the first end of the power resistor R0 are grounded; the microprocessor 51 is electrically connected to the first output end and the second output end of the detection unit 542 through the first signal processing circuit 55 and the second signal processing circuit 56, respectively, and the power supply module 52 is connected to the power supply end of the square wave generator 5411 and the power supply end of the microprocessor 51, respectively.

[0074] In the third embodiment of the present invention, the working principle of the present invention is as follows: when the present invention is used to detect the salt concentration of a salt solution, the first detection electrode 41 and the second detection electrode 42 are both placed in the salt solution to be detected, the square wave generator 5411 of the excitation unit 541 generates a square wave signal and outputs it to the detection unit 542, so that a voltage difference is generated between the first detection electrode 41 and the second detection electrode 42, and the microprocessor 51 obtains the output voltage of the first output end and the second output end of the detection unit 542 through the first signal processing circuit 55 and the second signal processing circuit 56 of the signal processing module, and then the microprocessor 51 calculates the conductivity between the first detection electrode 41 and the second detection electrode 42 in combination with the resistance values ​​of the first resistor R1, the second resistor R2 and the third resistor R3, and then the microprocessor 51 converts the conductivity into the corresponding salt concentration, thereby realizing the detection of the salt concentration of the salt solution. Among them, the conversion of the conductivity into the corresponding salt concentration is a conventional design in the art and will not be elaborated here.

[0075] In the third embodiment of the present invention, the calculation formula of the conductivity between the first detection electrode 41 and the second detection electrode 42 is: G=(U1 / r1) / {(r2+r3)U2 / r3}=(U1*r3) / {U2*r1*(r2+r3)}, wherein G is the conductivity between the first detection electrode 41 and the second detection electrode 42, U1 is the output voltage of the first output end of the detection unit 542, U2 is the output voltage of the second output end of the detection unit 542, r1 is the resistance value of the first resistor R1, r2 is the resistance value of the second resistor R2, and r3 is the resistance value of the third resistor R3.

[0076] In the third embodiment of the present invention, within one cycle of the square wave signal generated by the square wave generator 5411, the high level duration of the square wave signal is 0.01ms~500ms, and the high level duration of the square wave signal is less than or equal to the low level duration, so that the high level duration is short and the first capacitor C1 can be effectively discharged, which can ensure that the first detection electrode 41 and the second detection electrode 42 will not generate polarization. In addition, the high level voltage of the square wave signal generated by the square wave generator 5411 is 3V~48V, so that the current between the first detection electrode 41 and the second detection electrode 42 is small and the power-on time is short, so that the first detection electrode 41 and the second detection electrode 42 basically do not electrolyze the salt solution, further ensuring that the first detection electrode 41 and the second detection electrode 42 will not generate polarization.

[0077] In the third embodiment of the present utility model, the first signal processing circuit 55 and the second signal processing circuit 56 adopt a signal filtering and amplifying circuit, which can filter and amplify the signal to ensure that the microprocessor 51 can accurately obtain the output voltage of the first output terminal and the second output terminal of the detection module.

[0078] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A salt electrolyzer, characterized in that: It includes a main body, an electrolytic cell, a solution electrolysis head, a solution detection head, and a control host; The electrolytic cell is installed on the body, an electrolytic cell cavity is formed inside the electrolytic cell, and the electrolytic cell is provided with a liquid inlet and a liquid outlet communicated with the electrolytic cell cavity; The solution electrolysis head is installed in the electrolytic tank, and the solution electrolysis head has a first electrolysis electrode and a second electrolysis electrode extending into the electrolytic tank cavity; The solution detection head is installed in the detection tank, and the solution detection head has a first detection electrode and a second detection electrode extending into the electrolytic tank cavity; The control host is installed on the main body, and the control host is electrically connected to the solution electrolysis head and the solution detection head respectively.

2. A salt electrolyzer according to claim 1, characterized in that: The solution detection head also has a temperature probe extending into the electrolytic cell cavity.

3. A salt electrolyzer according to claim 1, characterized in that: The control host includes a microprocessor, a power module, a solution electrolysis circuit and a solution detection circuit. The power module is electrically connected to the microprocessor, the solution detection circuit and the solution electrolysis circuit respectively. The microprocessor is electrically connected to the first electrolysis electrode and the second electrolysis electrode through the solution electrolysis circuit. The microprocessor is electrically connected to the first detection electrode and the second detection electrode through the solution detection circuit.

4. A salt electrolyzer as claimed in claim 3, characterized in that: The solution detection circuit includes an excitation unit and a detection unit; The excitation unit comprises a square wave generator for generating a square wave signal, the square wave signal switches between a high level and a zero level, and the output end of the square wave generator is electrically connected to the excitation end of the detection unit; The detection unit includes a power resistor, a first detection branch, a second detection branch and a third detection branch; the first detection branch includes a first resistor and a first capacitor connected in series, the first end of the first detection branch is electrically connected to the first detection electrode, the second end of the second detection branch is grounded, and the common node of the first resistor and the first capacitor is electrically connected to the first output end of the detection unit; the second detection branch includes a second resistor and a third resistor connected in series, the first end of the second detection branch is electrically connected to the first end of the power resistor and the second detection electrode, the second end of the second detection branch is grounded, and the common node of the second resistor and the third resistor is electrically connected to the second output end of the detection unit; the third detection branch includes a fourth resistor and a fifth resistor connected in series, the first end of the third detection branch is electrically connected to the first detection electrode, the second end of the third detection branch is grounded, and the common node of the fourth resistor and the fifth resistor is electrically connected to the third output end of the detection unit; the second end of the power resistor is electrically connected to the excitation end of the detection unit; The microprocessor is electrically connected to the first output end, the second output end and the third output end of the detection unit through the first signal processing circuit, the second signal processing circuit and the third signal processing circuit respectively, and the power supply module is connected to the power supply end of the square wave generator and the power supply end of the microprocessor respectively.

5. A salt electrolyzer as claimed in claim 4, characterized in that: The first end of the first resistor is connected to the first end of the first detection branch, the second end of the first resistor and the first end of the first capacitor are connected to the first output end of the detection unit, and the second end of the first capacitor is connected to the second end of the first detection branch.

6. A salt electrolyzer as claimed in claim 4, characterized in that: The first end of the first capacitor is connected to the first end of the first detection branch, the second end of the first capacitor and the first end of the first resistor are connected to the first output end of the detection unit, and the second end of the first resistor is connected to the second end of the first detection branch.

7. A salt electrolyzer as claimed in claim 3, characterized in that: The solution detection circuit includes an excitation unit and a detection unit; The excitation unit comprises a square wave generator for generating a square wave signal, the square wave signal switches between a high level and a zero level, and the output end of the square wave generator is electrically connected to the excitation end of the detection unit; The detection unit includes a first capacitor, a first resistor, a second resistor, a third resistor and a fourth resistor; the first end of the first capacitor and the first end of the fourth resistor are electrically connected to the excitation end of the detection unit, the second end of the first capacitor and the first end of the second resistor are electrically connected to the second detection electrode, the second end of the second resistor and the first end of the third resistor are electrically connected to the first output end of the detection unit, the first end of the first resistor is electrically connected to the first detection electrode, and the second end of the first resistor, the second end of the third resistor and the first end of the fourth resistor are grounded; The microprocessor is electrically connected to the first output terminal and the second output terminal of the detection unit through the first signal processing circuit and the second signal processing circuit respectively, and the power supply module is connected to the power supply terminal of the square wave generator and the power supply terminal of the microprocessor respectively.

8. A salt electrolyzer according to claim 4 or 7, characterized in that: In one cycle time of the square wave signal generated by the square wave generator, the high level duration of the square wave signal is 0.01ms~500ms, and the high level duration of the square wave signal is less than or equal to the low level duration.

9. A salt electrolyzer according to claim 4 or 7, characterized in that: The high level voltage of the square wave signal generated by the square wave generator is 3V~48V.

10. A salt electrolyzer according to claim 1, characterized in that: The solution detection head includes a detection connection seat, a detection connection cover, and the first detection electrode and the second detection electrode. The detection connection seat is provided with a connection joint and two electrode connection wires electrically connected to the connection joint. The two electrode connection wires are provided with plug connectors. The first detection electrode and the second detection electrode are respectively plugged in and matched with the plug connectors of the two electrode connection wires. The detection connection cover is detachably connected to the detection connection seat. The detection connection cover covers the two electrode connection wires and is provided with two electrode positioning holes for respectively sleeved the first detection electrode and the second detection electrode.

11. A salt electrolyzer according to claim 10, characterized in that: The solution detection head also includes a transmission connector plugged with the connection connector, and the transmission connector has a transmission wire electrically connected to the control host.

12. A salt electrolyzer according to claim 11, characterized in that: The solution detection head also includes a detection limit cover, which is threadedly connected to the detection connection seat, and a connection plug is sandwiched between the limit cover and the detection connection seat.

13. A salt electrolyzer according to claim 1, characterized in that: The two ends of the electrolytic cell are respectively provided with a first mounting port and a second mounting port, and the solution electrolysis head and the solution detection head are respectively detachably mounted on the first mounting port and the second mounting port.

14. A salt electrolyzer according to claim 13, characterized in that: The first mounting opening and the second mounting opening are respectively screwed with a first mounting cover and a second mounting cover. The first mounting cover and the edge of the first mounting opening clamp the solution electrolysis head, and the second mounting cover and the edge of the second mounting opening clamp the solution detection head.

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