CN111186888B - EDR (electro-discharge reactor) filtering device and electrode reversing control method thereof - Google Patents
EDR (electro-discharge reactor) filtering device and electrode reversing control method thereof Download PDFInfo
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- CN111186888B CN111186888B CN201911418778.3A CN201911418778A CN111186888B CN 111186888 B CN111186888 B CN 111186888B CN 201911418778 A CN201911418778 A CN 201911418778A CN 111186888 B CN111186888 B CN 111186888B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000001914 filtration Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 abstract 2
- 239000003990 capacitor Substances 0.000 description 3
- 238000000909 electrodialysis Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000895 extractive distillation Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
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Abstract
An EDR filtering device and a reverse pole control method thereof are disclosed, wherein the reverse pole logic of positive voltage application is as follows: a. accumulating the produced water to M liters (0.7N < M < N), and starting to reverse the pole once the original water tank is stopped when the liquid level of the original water tank is low; or b, forcibly starting the electrode reversing when the accumulated production water reaches N liters. The reverse polarity inverting logic is: a. the discharged electricity is more than 0.75Q, the liquid level of the original water tank is low, and the electrode is reversed once the machine is stopped; or b, all Q is discharged, and the electrode is reversed after the machine is stopped for more than 1 minute; or c, continuously using the discharged electricity quantity to reach 1.25Q, and forcibly starting the electrode reversing. The invention can reverse the pole according to the system condition, and can meet the performance requirement of the system. Because pole reversal is basically performed under the shutdown condition, inconvenience of frequent pole reversal in the use process of a user is avoided, and user experience is good.
Description
Technical Field
The invention relates to the technical field of water purification, in particular to an EDR (extractive distillation) filtering device and a pole-reversing control method thereof.
Background
The water quality can be purified by an electrodialysis reversal technology (EDR), the operation of high-purity wastewater ratio can be realized, and the method is widely applied to a table-top instant-filtering instant-heating water dispenser.
Electrodialysis needs to be performed with electrode inversion at a fixed period, namely, exchange of a pure wastewater channel and exchange of a positive electrode and a negative electrode, so that the system has longer service life and is safer.
The effective control of pole-reversing is very important to the product performance, the pole-reversing time is not well controlled, the system is easy to be unstable, and the product quality is influenced. With the increasing requirements of people, users can not accept the condition of inconvenient use caused by the frequent and extremely-frequent products. Therefore, the prior art inverted pole method cannot meet the user requirement.
Therefore, it is necessary to provide an ED filtering apparatus and a pole-reversing control method thereof to overcome the deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide a reverse pole control method of an EDR (enhanced data Rate) filtering device, which can meet the performance requirement of a system and avoid the condition of inconvenient use of a user caused by frequent reverse poles in the prior art.
The above object of the present invention is achieved by the following technical means:
provides a pole-reversing control method of an EDR filtering device,
in the process of forward voltage application, whether the electrode is inverted is judged according to the following steps,
a1, judging the quantitative relation between the accumulative water production quantity M liter and the maximum water production quantity N liter of the EDR filtering device,
when t · N < M < N, step a2 is entered,
when M is equal to N, go to step a 4;
when M is less than or equal to t.N, entering the step A5;
a2, judging whether the liquid level of the original water tank is in a low liquid level state, if so, entering the step A3, otherwise, entering the step A5;
a3, judging whether the EDR filtering device is stopped, if so, entering the step A4, otherwise, entering the step A5;
a4, starting to reverse the pole;
a5, returning to A1 without pole reversal;
in the process of reverse voltage application, whether the pole reversal is carried out is judged according to the following steps,
b1, judging the quantity relation between the discharged capacity F and the charged total quantity Q of the electrode E,
when e · Q < F < Q, go to step B2;
when Q is less than or equal to F < fQ, entering the step B7;
when F is larger than or equal to f.Q, entering the step B5;
when F is less than or equal to e.Q, entering the step B6;
b2, judging whether the EDR filtering device is stopped, if so, entering the step B3, otherwise, entering the step B6;
b3, judging whether the original water tank liquid level is in a low liquid level state, if so, entering the step B4, otherwise, entering the step B6;
b4, judging whether the EDR filtering device is stopped, if so, entering the step B5, otherwise, entering the step B6;
b5, starting the electrode reversing;
b6, not reversing the pole, returning to the step B1;
b7, judging whether the EDR filtering device is stopped for at least one minute, if so, entering a step B5, otherwise, entering a step B1.
Preferably, t is in the range of 0.6 to 0.8.
Preferably, t is 0.7.
Preferably, e is in the range of 0.7 to 0.8.
Preferably, e is 0.75.
Preferably, f is in the range of 1.2 to 1.5.
Preferably, f is 1.25.
Preferably, when the residual liquid in the raw water tank is between 0.1 and 0.2 of the total volume of the raw water tank, the liquid level of the raw water tank is judged to be in a low liquid level state.
Preferably, a liquid level sensor is arranged in the raw water tank, and information about whether the raw water tank is in a low liquid level state or not is obtained through the liquid level sensor.
Another object of the present invention is to provide an EDR filter device, which is provided with a raw water tank, an EDR filter unit, and an electronic control chip outputting an applied electrode signal, wherein the electronic control chip outputs the electrode signal according to the above-mentioned inverted electrode control method.
The EDR filtering device and the pole-reversing control method thereof can reverse poles according to system conditions, and can meet the performance requirements of the system. Because pole reversal is basically performed under the shutdown condition, inconvenience of frequent pole reversal in the use process of a user is avoided, and user experience is good.
Drawings
The invention is further illustrated by means of the attached drawings, the content of which is not in any way limiting.
FIG. 1 is a schematic diagram of an EDR filtration apparatus of the present invention.
Detailed Description
The invention is further illustrated by the following examples.
Example 1.
A reverse pole control method of an EDR filtering device is characterized in that a reverse pole of a system consists of two periods of forward voltage water making and reverse voltage water making. During a forward power up, the capacitance of the system is in a charged state and is therefore limited by the maximum capacitance maximum capacity. That is, the maximum water production reaches N liters, the system capacitor is full, and the reverse polarity is required. Thus, the inverting logic of the system for applying a voltage in the forward direction and the reverse direction is as follows.
In the process of forward voltage application, whether the electrode is inverted is judged according to the following steps,
a1, judging the quantitative relation between the accumulative water production quantity M liter and the maximum water production quantity N liter of the EDR filtering device,
when t · N < M < N, step a2 is entered,
when M is equal to N, go to step a 4;
when M is less than or equal to t.N, entering the step A5;
a2, judging whether the liquid level of the original water tank is in a low liquid level state, if so, entering the step A3, otherwise, entering the step A5;
a3, judging whether the EDR filtering device is stopped, if so, entering the step A4, otherwise, entering the step A5;
a4, starting to reverse the pole;
a5, do not reverse the pole, return to A1.
Wherein t is in the range of 0.6 to 0.8, preferably 0.7.
The reverse polarity is the discharge process of the capacitor, and the full charge Q of the capacitor determines the maximum discharge time of the system. Therefore, in the process of reversely applying the voltage, whether the pole reversal is carried out is judged according to the following steps,
b1, judging the quantity relation between the discharged capacity F and the charged total quantity Q of the electrode E,
when e · Q < F < Q, go to step B2;
when Q is less than or equal to F < fQ, entering the step B7;
when F is larger than or equal to f.Q, entering the step B5;
when F is less than or equal to e.Q, entering the step B6;
b2, judging whether the EDR filtering device is stopped, if so, entering the step B3, otherwise, entering the step B6;
b3, judging whether the original water tank liquid level is in a low liquid level state, if so, entering the step B4, otherwise, entering the step B6;
b4, judging whether the EDR filtering device is stopped, if so, entering the step B5, otherwise, entering the step B6;
b5, starting the electrode reversing;
b6, not reversing the pole, returning to the step B1;
b7, judging whether the EDR filtering device is stopped for at least one minute, if so, entering a step B5, otherwise, entering a step B1.
Wherein the value range of e is 0.7 to 0.8, and the preferred value of e is 0.75. The value of f ranges from 1.2 to 1.5, and preferably the value of f is 1.25.
And when the residual liquid in the raw water tank is between 0.1 and 0.2 of the total volume of the raw water tank, judging that the liquid level of the raw water tank is in a low liquid level state. Specifically, a liquid level sensor is arranged in the raw water tank, and whether the raw water tank is in low liquid level state information or not is obtained through the liquid level sensor.
The pole-reversing control method of the EDR filtering device can reverse poles according to the actual working condition of the system, and can meet the performance requirement of the system. Because pole reversal is basically performed under the shutdown condition, inconvenience of frequent pole reversal in the use process of a user is avoided, and user experience is good.
Example 2.
An EDR filter device, as shown in fig. 1, is provided with a raw water tank, an EDR filter unit, and an electronic control chip outputting an applied electrode signal, the electronic control chip outputting the electrode signal according to the inverted-pole control method of example 1. The raw water tank is provided with a liquid level sensor for detecting the liquid level condition in the raw water tank.
The EDR filtering device can be inverted according to the system condition, and can meet the performance requirement of the system. Because pole reversal is basically performed under the shutdown condition, inconvenience of frequent pole reversal in the use process of a user is avoided, and user experience is good.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. A pole-reversing control method of an EDR filtering device is characterized by comprising the following steps:
in the process of forward voltage application, whether the electrode is inverted is judged according to the following steps,
a1, judging the quantitative relation between the accumulative water production quantity M liter and the maximum water production quantity N liter of the EDR filtering device,
when t · N < M < N, step a2 is entered,
when M is equal to N, go to step a 4;
when M is less than or equal to t.N, entering the step A5;
a2, judging whether the liquid level of the original water tank is in a low liquid level state, if so, entering the step A3, otherwise, entering the step A5;
a3, judging whether the EDR filtering device is stopped, if so, entering the step A4, otherwise, entering the step A5;
a4, starting to reverse the pole;
a5, returning to A1 without pole reversal;
in the process of reverse voltage application, whether the pole reversal is carried out is judged according to the following steps,
b1, judging the quantity relation between the discharged capacity F and the charged total quantity Q of the electrode E,
when e · Q < F < Q, go to step B2;
when Q is less than or equal to F < fQ, entering the step B7;
when F is larger than or equal to f.Q, entering the step B5;
when F is less than or equal to e.Q, entering the step B6;
b2, judging whether the EDR filtering device is stopped, if so, entering the step B3, otherwise, entering the step B6;
b3, judging whether the original water tank liquid level is in a low liquid level state, if so, entering the step B4, otherwise, entering the step B6;
b4, judging whether the EDR filtering device is stopped, if so, entering the step B5, otherwise, entering the step B6;
b5, starting the electrode reversing;
b6, not reversing the pole, returning to the step B1;
b7, judging whether the EDR filtering device is stopped for at least one minute, if so, entering a step B5, otherwise, entering a step B1;
and when the residual liquid in the original water tank is between 0.1 and 0.2 of the total volume of the original water tank, judging that the liquid level of the original water tank is in a low liquid level state.
2. The method for pole inversion control of an EDR filter apparatus according to claim 1, wherein: t ranges from 0.6 to 0.8.
3. The method for pole inversion control of an EDR filter apparatus according to claim 2, characterized in that: t is 0.7.
4. The method for pole inversion control of an EDR filter apparatus according to claim 1, wherein: the value range of e is 0.7 to 0.8.
5. The method for pole inversion control of an EDR filter apparatus according to claim 4, wherein: the value of e is 0.75.
6. The method for pole inversion control of an EDR filter apparatus according to claim 1, wherein: the value of f ranges from 1.2 to 1.5.
7. The method for pole inversion control of an EDR filter apparatus according to claim 6, characterized in that: the value of f is 1.25.
8. The method for pole inversion control of an EDR filter device according to any one of claims 1 to 7, characterized in that: and a liquid level sensor is arranged in the raw water tank, and whether the raw water tank is in a low liquid level state or not is obtained through the liquid level sensor.
9. An EDR filter device, characterized in that: the device is provided with a raw water tank, an EDR filtering unit and an electric control chip for outputting an applied electrode signal, wherein the electric control chip outputs the electrode signal according to the inverted pole control method of any one of claims 1 to 8.
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