Water quality adjustment device for aquariums used to grow organisms

Abstract

The object of the present invention is to provide a water quality adjustment device for an aquarium for rearing organisms, which adjusts the TDS value of water and allows fish and other organisms to grow normally. [Solution] The present invention is a water quality adjustment device for an aquarium for growing organisms, which comprises an ion exchange resin that removes ions from the water in the aquarium, an ion exchange resin cartridge that stores the ion exchange resin, a water intake tube that draws up water from the aquarium, a water supply tube that delivers water to the aquarium, a pump that supplies water from the aquarium to the ion exchange resin cartridge via the water intake tube and delivers the water in the ion exchange resin cartridge to the aquarium via the water supply tube, a TDS sensor that measures the TDS value of the water in the aquarium, and control means that determines whether the measured TDS value of the TDS sensor exceeds a predetermined TDS threshold, and controls the pump to operate if the measured TDS value exceeds the TDS threshold, and to stop the pump if the measured TDS value does not exceed the TDS threshold.

Description

[Technical Field]

[0001] The present invention provides Aquarium for biological growth This relates to a device for adjusting the water quality. [Background technology]

[0002] BACKGROUND ART Conventionally, the device described in Patent Document 1 is known as an ion removal device for an aquarium. The aquarium ion removal device described in Patent Document 1 stores ion exchange resin in a cylindrical storage body with a bottom, and has a conduit outlet for sending water into the storage body facing the bottom of the storage body, and an outlet for discharging water into the aquarium on the side of the storage body.

[0003] With this configuration, the ion exchange resin circulates within the storage section, increasing the opportunities for the water to come into contact with the ion exchange resin, allowing calcium ions in the water to be removed quickly. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 07-059486 Summary of the Invention [Problem to be solved by the invention]

[0005] In the aquarium ion removal device described in Patent Document 1, the pump continues to operate even after sufficient ions such as calcium ions have been removed from the aquarium water, which may result in more ions being removed than necessary, which could prevent the fish, plants, etc. in the aquarium from growing normally. For this reason, from the perspective of allowing the fish, plants, etc. in the aquarium to grow normally, there is a demand for a system that prevents more ions from being removed than necessary from the aquarium water.

[0006] In the aquarium ion removal device described in Patent Document 1, in order to prevent the fish, plants, etc. in the aquarium from being unable to grow due to excessive pump operation, it is conceivable that a person would manually stop the pump at an appropriate time before the pump becomes overdriven, and then manually restart the pump at an appropriate time before the aquarium water becomes too ion-rich, and repeat these operations. However, this manual task of repeatedly turning the pump on and off is cumbersome, and there is a demand for an approach to eliminate this complication. Furthermore, it is difficult to turn the pump on and off at the appropriate time. The present invention provides For biological cultivation It keeps ions such as ammonia (ammonium), nitrite, and nitrate, which are harmful to fish and plants in the aquarium water, at low concentrations, and does not remove more ions than necessary.Furthermore, it creates an environment in which fish and plants in the aquarium can grow normally without the need for humans to repeatedly turn the pump on and off. Aquarium for biological growth The object of the present invention is to provide a water quality adjustment device. [Means for solving the problem]

[0007] The present invention Aquarium for biological growth The water quality adjustment device is Aquarium for biological growth an ion exchange resin cartridge for accommodating the ion exchange resin; and Aquarium for biological growth a water suction tube for suctioning the water; Aquarium for biological growth a water supply tube for supplying water to the Aquarium for biological growth The water in the ion exchange resin cartridge is supplied to the ion exchange resin cartridge through the water supply tube. Aquarium for biological growth a pump for supplying water to the Aquarium for biological growtha TDS sensor for measuring the TDS (Total Dissolved Solids) value of the water; and a control means for determining whether or not the measured TDS value measured by the TDS sensor exceeds a predetermined TDS threshold, and for operating the pump when it is determined that the measured TDS value exceeds the TDS threshold, while for stopping the pump when it is determined that the measured TDS value does not exceed the TDS threshold. an operation panel connected to the control means, the operation panel having a setting mode selection switch that can set at least a TDS threshold setting mode and a pump operation ratio setting mode; The present invention is characterized by having the following.

[0008] In the present invention, Aquarium for biological growth and a temperature correction means for correcting the measured TDS value in accordance with the water temperature measured by the water temperature sensor.

[0009] In the present invention, it is preferable to have an abnormal state detection means for detecting that the measured TDS value has remained abnormal for a predetermined period of time or more, and a warning means for issuing a warning when the abnormal state detection means detects an abnormal state. [Effects of the Invention]

[0010] According to the present invention, For biological cultivation It maintains the appropriate amount of ions in the water of the aquarium, prevents ions from being removed more than necessary, and creates an environment in which fish, plants, etc. in the aquarium can grow normally without the need for humans to repeatedly turn the pump on and off. Aquarium for biological growth It is possible to provide a water quality adjustment device. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a perspective view showing a water quality adjusting device 100 for an organism-raising aquarium and an aquarium WT according to a first embodiment of the present invention. [Figure 2] 1 is a schematic diagram showing a water quality adjusting device 100 for an organism-raising aquarium and an aquarium WT according to a first embodiment of the present invention. [Figure 3] 1 is a diagram showing an operation panel 60 of a water quality adjusting device 100 for an aquarium for cultivating organisms according to a first embodiment of the present invention. [Figure 4] 1 is a block diagram showing the main parts of a water quality adjustment device 100 for an aquarium for cultivating organisms according to a first embodiment of the present invention. [Figure 5] 1 is a flowchart showing the operation of the water quality adjustment device 100 for an aquarium for cultivating organisms according to the first embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] This is embodiment 1 of the present invention. Aquarium for biological growth The water quality adjustment device 100 will now be described. FIG. 1 is a first embodiment of the present invention. Aquarium for biological growth FIG. 2 is a perspective view showing the water quality adjustment device 100 and the water tank WT. Figure 2 shows Aquarium for biological growth 1 is a schematic diagram showing a water quality adjusting device 100 and a water tank WT.

[0013] Aquarium for biological growth The water quality adjustment device 100 includes an ion exchange resin cartridge 10, an ion exchange resin 11, a pump P, a motor M, a sensor probe 30, a signal processing unit 33, a microcomputer 40, a filter 50, an operation panel 60, and a display panel 70 consisting of a liquid crystal panel or the like. The sensor probe 30 has a TDS sensor 30A and a water temperature sensor 31. The TDS sensor 30A has a pair of electrodes. The ion exchange resin cartridge 10 accommodates an ion exchange resin 11. One-touch couplers 12 and 13 are connected to both ends of the ion exchange resin cartridge 10. The ion exchange resin 11 is housed in the ion exchange resin cartridge 10 and is a means for removing cations or anions.

[0014] Ion exchange removes impurity ions contained in the water W in the water tank WT and releases the ions originally contained in the ion exchange resin 11 in place, thereby removing the impurities and purifying the water W. The ion exchange resin 11 includes a cation exchange resin that exchanges cations and an anion exchange resin that exchanges anions. The type of ion exchange resin to be used depends on the type of ions to be removed and the purpose. In this embodiment, when producing clean water by removing impurity ions from the water W in the water tank WT, it is preferable to use both cations and anions, since the water W contains impurity ions.

[0015] Therefore, in this embodiment, a cation exchange resin and an anion exchange resin are used in a mixing ratio of, for example, 1 to 1. This mixing ratio can be changed as appropriate depending on the type of impurity ions in the water W in the water tank WT, the ion conversion capacity of the ion exchange resin, etc. Cation and anion exchange resins and When water W in a tank WT containing impurity ions is passed through a resin mixture containing these, cations such as ammonium, magnesium, calcium, potassium, and sodium react with the cation exchange resin, while anions such as nitrite and nitrate react with the anion exchange resin, removing the impurity ions. H-type strongly acidic cation exchange resin and OH-type strongly basic anion exchange resin and When using ion exchange, H+ and OH- and The two substances combine to form H2O (water), so no other substances remain or are generated, and clean water W is obtained.

[0016] When an H-type strongly acidic cation exchange resin and an OH-type strongly basic anion exchange resin are used as the ion exchange resins 11, both types of ion exchange resins may be mixed and used in one ion exchange resin cartridge 10, or a layer of an H-type strongly acidic cation exchange resin and a layer of an OH-type strongly basic anion exchange resin may be stacked. If each ion exchange resin is placed in a net, the individual ion exchange resins can be easily separated, and only the exhausted ion exchange resin can be easily removed.

[0017] The removed ion exchange resin 11 can be easily regenerated using different methods. That is, by passing an acid or alkali through the ion exchange resin 11 to release the impurity ions again, the resin can be returned to its state before ion exchange. More specifically, when hydrochloric acid (HCl) is passed through the cation exchange resin in the impurity ion form, H+ is exchanged with the impurity ions, and the cation exchange resin is regenerated. Also, when sodium hydroxide (NaOH) is passed through the anion exchange resin, OH- is exchanged with the impurity ions, and the anion exchange resin is regenerated.

[0018] In Figures 1 and 2, pump P is a pump that supplies water W in water tank WT to ion exchange resin cartridge 10 via water intake tubes 22 and 23, and delivers water W in ion exchange resin cartridge 10 to water tank WT via water supply tube 24. One end of a water intake tube 22 that takes in water W from the water tank WT is connected to the inlet P1 of the pump P, and the other end of the water intake tube 22 is inserted into the water tank WT. The end of the water intake tube 22 on the water tank WT side is the water intake port 21, and a filter 50 that removes debris and the like is connected to this water intake port 21.

[0019] One end of the water intake tube 23, which faces the ion exchange resin cartridge 10, is connected to the outlet P2 of the pump P. The water intake tube 23 is formed in a T-shape, branching via a Tee 23A in the middle. On the side of the water intake tube 23 opposite the outlet P2 of the pump P, one of the branches is connected to the ion exchange resin cartridge 10 via a one-touch coupler 12, and the other branch is connected to the drain cock 26. The upper end of the ion exchange resin cartridge 10 is connected to one end of a water supply tube 24 via a one-touch coupler 13, and the opposite end of the water supply tube 24 is an outlet 25, which is inserted into the water tank WT. The outlet 25 and the water inlet 21 are arranged so as not to face each other, so that the purified water W discharged from the outlet 25 is not immediately sucked into the water inlet 21.

[0020] FIG. 3 is a diagram illustrating the first embodiment of the present invention. Aquarium for biological growth 1 is a diagram showing an operation panel 60 provided on the water quality adjustment device 100. FIG. The operation panel 60 has a main switch 61 , a pump switch 62 , a pump forced start switch 63 , a setting mode selection switch 64 , and a numeric up / down switch 65 . As shown in FIG. 2, the operation panel 60 is connected to the microcomputer 40 .

[0021] The main switch 61 is Aquarium for biological growth The pump switch 62 is a switch that turns on and off the power to the entire water quality adjustment device 100. The pump switch 62 is a switch that turns on and off the power to the pump P. The pump forced start switch 63 is a switch that manually and forcibly starts the pump P when the pump P is stopped while the pump switch 62 is turned on and the power to the pump P is on. The setting mode selection switch 64 is a switch for selecting one of a plurality of setting modes, including a TDS threshold setting mode, a pump operation ratio setting mode, an automatic calibration start mode, a manual calibration mode, a high water temperature threshold setting mode, a low water temperature threshold setting mode, an ion exchange available time setting mode, an ion exchange resin usage rate reset mode, a warning means (buzzer sounding) on / off setting mode, and a pump operation cumulative time display mode.

[0022] The TDS threshold setting mode is a mode for setting the limit value, i.e., the TDS threshold, at which the contamination of the water W in the aquarium WT, i.e., the TDS value, may prevent fish, plants, etc. in the aquarium WT from growing normally. The pump operation ratio setting mode is a mode for setting the ratio between the on time and off time of the pump P, and by setting this mode, the pump P is operated intermittently at a predetermined ratio. Since sudden changes in water quality are undesirable for fish, plants, etc., sudden changes in water quality are prevented by taking into account the amount of water and adjusting the ratio between the on time and off time of the pump P. The ratio of on and off times for the pump operation ratio should be 10 seconds per cycle, and it is recommended that the pump operation time ratio can be changed in 1-second increments, such as from 1 second on and 9 seconds off to 10 seconds on and 0 seconds off. The ion exchange resin usage rate reset mode is a mode in which the usage rate of the ion exchange resin 11 is reset when the ion exchange resin 11 is replaced with a new one. The numeric up / down switch 65 is a switch for increasing or decreasing the numeric value in the setting mode selected by the setting mode selection switch 64. In FIG. 3, pressing the upper switch increases the numeric value, and pressing the lower switch decreases the numeric value.

[0023] FIG. 4 is a diagram illustrating the first embodiment of the present invention. Aquarium for biological growth 1 is a block diagram showing the main parts of a water quality adjustment device 100. FIG. The microcomputer 40 has, as its functions, a control means 41, a TDS value calculation and correction means 42, an ion exchange resin life determination means 43, and an abnormal state detection means 44. The voltage sent from the TDS sensor 30A is processed by the signal processing unit 33, and the output DC voltage is sent to the microcomputer 40, and then sent to the microcomputer 40 via the sensor cable 32 together with the water temperature data measured by the water temperature sensor 31.

[0024] Here, the TDS value is a value corresponding to the amount of ionic substances. In addition to the TDS value, electrical conductivity may also be used as a measure to express the degree of contamination of water W, but in this specification, the "TDS value" will be used primarily. As mentioned above, TDS is the total dissolved solids, i.e., the sum of all substances dissolved in water. It is an abbreviation for Total Dissolved Solids and is expressed in mg / L (milligrams per liter) or ppm. 1 mg / L is roughly equivalent to 1 ppm. ppm is a unit that indicates how many parts per million of a substance are present. For example, 1 milligram of a substance dissolved in 1 liter of water is 1 ppm. The TDS value calculation and correction means 42 of the microcomputer 40 converts the DC voltage output by the signal processing unit 33 into a TDS value, which is then quantified in ppm. The operation of the pump P is determined based on the quantified ppm value. The amount of the ionic substance, that is, the amount of ions, is synonymous with the ion concentration.

[0025] The control means 41 determines whether the value actually measured by the TDS sensor 30A, i.e., the measured TDS value, is greater than or equal to a preset TDS threshold value. value If it is determined that the measured TDS value exceeds the TDS threshold, the pump P is operated, and if it is determined that the measured TDS value does not exceed the TDS threshold, the pump P is stopped. When the water quality control device 100 starts operating, the pump P is stopped, and if it is determined that the measured TDS value does not exceed the TDS threshold in this state, the pump P remains stopped. As mentioned above, the measured TDS value is referred to as the "measured TDS value," and the TDS value set as the threshold value is referred to as the "TDS threshold value."

[0026] The TDS value calculation and correction means 42 is a means for calculating a TDS value (measured TDS value) based on the DC voltage output from the signal processing unit 33, correcting the measured TDS value according to the water temperature measured by the water temperature sensor 31, and obtaining a temperature-corrected measured TDS value. The ion exchange resin life determining means 43 is a means for determining that the ion exchange resin has reached the end of its life if the measured TDS value does not decrease after a certain period of time has elapsed since the pump P was operated. The display panel 70 displays necessary characters and numbers such as the TDS threshold value, the measured TDS value, the water temperature data, and various setting values ​​set by the setting mode selection switch 64, and is also an example of a warning means that issues a warning when the ion exchange resin life determination means 43 determines that the ion exchange resin has reached the end of its life. The display panel 70 is equipped with an LED indicator that shows the pump operation and a flashing LCD panel, and is an example of a means for notifying the user of the life of the ion exchange resin. The display panel 70 is connected to the control means 41 to display necessary characters and numbers such as the aforementioned TDS threshold value, the measured TDS value, the water temperature data, and the various setting values ​​set by the setting mode selection switch 64. The operation panel 60 is also connected to the control means 41 of the microcomputer 40 to display the various setting values ​​set by the setting mode selection switch 64 on the display panel 70. The warning means may be configured to flash the display on the display panel 70, provide a warning display, or use a buzzer or lamp (not shown).

[0027] In FIG. 1, the microcomputer 40 is housed in a box-shaped control unit box 80. The control unit box 80 is attached to the top of a downward U-shaped mounting stay 81, and the bottom of the mounting stay 81 is fixed to a base plate 90 via a pair of brackets 91. The ion exchange resin cartridge 10 is fixed to the rear surface of the control unit box 80 by means of a mounting band 95 and screws. The pump P is fixed to the ion exchange resin cartridge 10 by means of a mounting fixture 96 and screws.

[0028] next, Aquarium for biological growth The operation of the water quality adjustment device 100 will now be described. FIG. 5 is a diagram illustrating the first embodiment of the present invention. Aquarium for biological growth 4 is a flowchart showing the operation of the water quality adjustment device 100. first, Aquarium for biological growth The entire power supply to the water quality adjustment device 100 is turned on by turning on the main switch 61 (S1). That is, when the main switch 61 is flipped up, for example, to the ON side in FIG. 3, the power supply to the entire device is turned on. In this state, the water W in the water tank WT is usually clean, and therefore the pump P is stopped. Alternatively, the pump P may be driven when the main switch 61 is turned on, and if it is determined in S7, described below, that the water W in the water tank WT is clean, the pump P may be stopped. When the power is turned on (S1), if the water W in the water tank WT is contaminated and the measured TDS value is determined to be equal to or greater than the TDS threshold value in S7 described below, the pump P will operate intermittently in S8 described below.

[0029] After the power is turned on (S1), various setting values ​​are read from the EP-ROM provided in the microcomputer 40 (S2). Thereafter, if necessary, the setting mode selection switch 64 and the numeric up / down switch 65 on the operation panel 60 are operated to change various setting values, and the changed values ​​are stored in the EP-ROM (S3). The various setting values ​​include the above-mentioned TDS threshold setting mode, pump operation ratio setting mode, automatic calibration start mode, manual calibration mode, high water temperature threshold setting mode, low water temperature threshold setting mode, ion exchange available time setting mode, ion exchange resin usage rate reset mode, warning means (buzzer sounding) on / off setting mode, and pump operation cumulative time display mode, and the corresponding numerical values ​​are stored in the EP-ROM (S3).

[0030] Next, the procedure for determining the measured TDS value will be described. As the water W in the aquarium WT becomes increasingly polluted by fish waste, food, etc., the amount of ions such as ammonia (ammonium ion) (NH4+), nitrite ion (NO2-), and nitrate ion (NO3-) increases in the water W. The TDS sensor 30A measures the electrical conductivity corresponding to the amount of these ions, and the TDS value calculation / correction means 42 converts the electrical conductivity into a TDS value, thereby measuring the TDS (S4).

[0031] Then, the water temperature sensor 31 measures the temperature of the water W (S5), and the measured TDS value is corrected according to the measured water temperature (S6). When the water temperature changes, the TDS value changes. Since data processing is performed using the conductivity when the water temperature is 25°C as the standard, the measured TDS value is corrected to the TDS value when the water temperature is 25°C.

[0032] Next, the procedure for operating the pump P based on the measured TDS value and how the water W flows will be explained. The control means 41 determines whether the measured TDS value (the corrected TDS value) is equal to or greater than the TDS threshold value (S7). If the corrected measured TDS value is equal to or greater than the TDS threshold value, the amount of ions in the water W is too high, so the control means 41 operates the pump P intermittently (S8). When the pump P is operated, the water W in the water tank WT is sucked into the water intake tube 22 from the water intake port 21, and is supplied to the inside of the ion exchange resin cartridge 10 via the inlet P1 of the pump P, the main body of the pump P, the outlet P2, the water intake tube 23, and the one-touch coupler 12. Ta The water W comes into contact with the ion exchange resin 11 in the ion exchange resin cartridge 10 and undergoes ion exchange, reducing the amount of ions in the water W. The water W with reduced ions (ion exchanged) is discharged from the discharge port 25 into the water tank WT via the one-touch coupler 13 and the water supply tube 24. In addition, a filter 50 prevents debris in the water W from being sent to the pump P.

[0033] In this way, the water W repeatedly circulates through the circulation loop consisting of the water absorption tubes 22, 23, the ion exchange resin cartridge 10, the water supply tube 24, and the water tank WT, and the amount of ions contained in the water W in the water tank WT gradually decreases. In addition, the control means 41 of the microcomputer 40 determines whether the measured TDS value (or the corrected TDS value if correction is required) is equal to or greater than the TDS threshold value (S7), and if the corrected TDS value does not reach the TDS threshold value, the amount of ionic substances in the water W is appropriate, so the control means 41 maintains the stopped state of the pump P or stops the pump P (S9).

[0034] Next, the operation of determining the life of the ion exchange resin 11 based on the accumulated operating time will be described. Returning to the flowchart shown in Figure 5, the pump P operates intermittently (S8), and the operation time of the pump P is accumulated by the microcomputer 40 (S11). The accumulated operation time of the pump P is corrected according to the measured TDS value (S12). If the cumulative operation time of the pump P is equal to or greater than a preset ion exchangeable time, i.e., the cumulative time threshold for replacing the ion exchange resin 11 (S13), the entire operation is terminated, and the ion exchange resin 11 is either regenerated or replaced with a new one. In other words, when the predetermined cumulative time threshold is reached, it is determined that the life of the ion exchange resin 11 has expired and its ion exchange capability has decreased or disappeared, and the ion exchange resin 11 is either regenerated or replaced with a new ion exchange resin 11.

[0035] The lifespan of the ion exchange resin 11 correlates with the cumulative value of the usage time of the ion exchange resin 11 (i.e., the cumulative value of the time the pump P is operating). In order to notify the operator of the water tank WT of the time to replace the ion exchange resin 11, it is desirable to estimate in advance the operating time of the pump P that corresponds to the lifespan of the ion exchange resin 11, and notify the operator when the cumulative value of the operating time of the pump P reaches the estimated time. This notification to the operator is made by displaying on the display panel 70. The cumulative time threshold for replacing the ion exchange resin 11 can be appropriately set by the ion exchangeable time setting mode.

[0036] Next, the abnormality warning will be described. The method for detecting the end of the life of the ion exchange resin and issuing a warning is as follows. When the measured TDS value exceeds the TDS threshold, the pump starts operating. The microcomputer records the measured TDS value at the start of this pump operation, and records the measured TDS value after a set time, e.g., 10 minutes. If the recorded measured TDS value does not fall below a preset range from the measured TDS value at the start of pump operation (S21), e.g., if it does not fall by more than 1 ppm, it is determined that the ion exchange resin has reached the end of its life, and the LED indicator on the display panel 70 lights up or flashes to warn of the need for replacement (S22). Instead of indicating an abnormal state with an LED indicator, a warning may be issued by a speaker or buzzer (not shown), or a warning lamp may be turned on.

[0037] Next, we will explain what to do if the system freezes. If the program stops running due to a freeze of the microcomputer 40 while the pump P is on, the pump P may continue to run even if the measured TDS value falls below the TDS threshold, which is an abnormal state. To deal with this abnormal state, the microcomputer 40 may be configured to automatically restart and return to normal operation when it determines that the program has stopped.

[0038] If the measured and corrected TDS value becomes less than the TDS threshold value in the step (S7) of comparing the measured and corrected TDS value with the TDS threshold value, the application of, for example, DC 12 V to the pump P from a power source (not shown) is stopped, and the operation of the pump P is stopped (S9). By stopping the pump P, the decrease in ions in the water W stops, preventing the harmful effect of an excessive decrease in ions that would hinder the normal growth of fish, plants, etc. in the aquarium WT. By this operation, the ions in the water W in the aquarium WT are appropriately controlled, and the fish and plants in the water W grow normally.

[0039] In this way, operation of pump P brings water W into contact with ion exchange resin 11, gradually reducing the ions in water W until the measured TDS value returns to the TDS threshold value. Therefore, even if the amount of ions in water W in aquarium WT increases, the amount of ions is reduced by ion exchange, preventing deterioration of water quality. The pump P may be an electric pump, a diaphragm pump, or the like, and the type of pump is not important. In the first embodiment, there is no need for a person to repeatedly turn on and off the pump P, which eliminates the burden on the operator.

[0040] In step S7, the measured TDS value is compared with the TDS threshold value, but a human can press a button to select the TDS threshold value setting mode and change the TDS threshold value to an appropriate value depending on the fish species, etc. In other words, in step S3, the target TDS threshold value is changed in advance depending on the fish or plant. This allows for more appropriate management of the ion amount depending on the type of fish or plant.

[0041] Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration of the present invention is not limited to these embodiments, and even if there are design changes and the like within the scope of the present invention that do not deviate from the gist of the present invention, they are included in the present invention. [Explanation of symbols]

[0042] 100… Aquarium for biological growth Water quality adjustment equipment WT…aquarium W…Water 10...Ion exchange resin cartridge 11...Ion exchange resin 21…Water intake 22, 23...Water absorption tube 24...Water supply tube 25…Discharge port P...Pump 30...TDS sensor 31...Water temperature sensor 32...Sensor cable 33...Signal processing unit 40...microcomputer 41...Control means 42...TDS value calculation and correction means 43...Ion exchange resin life determination means 44...Abnormal state detection means 50...filter 60...Unit box 61...Main switch 62...Pump switch 63...Pump forced start switch 64...Setting mode selection switch 65...Number up / down switch 70...Display panel 80...Control unit box 81...Mounting stay 90...Base plate 91…Bracket 95...Mounting band 96...Mounting fixture

Claims

1. An ion exchange resin for removing predetermined ions from water contained in an aquarium for growing organisms; an ion exchange resin cartridge containing the ion exchange resin; a water suction tube for sucking up water from the organism cultivation tank; a water supply tube for supplying water to the organism cultivation tank; a pump that supplies water from the organism-growing aquarium to the ion exchange resin cartridge through the water intake tube and delivers water from the ion exchange resin cartridge to the organism-growing aquarium through the water supply tube; a TDS sensor for measuring the TDS value of the water in the aquarium; a control means for determining whether a measured TDS value, which is a measurement value of the TDS sensor, exceeds a preset TDS threshold, and for operating the pump when it is determined that the measured TDS value exceeds the TDS threshold, and for stopping the pump when it is determined that the measured TDS value does not exceed the TDS threshold; an operation panel connected to the control means, The operation panel includes a setting mode selection switch that can set at least a TDS threshold setting mode and a pump operation ratio setting mode. A water quality adjustment device for an aquarium for growing organisms.

2. The water quality adjusting device for an aquarium for growing organisms according to claim 1, a water temperature sensor for measuring the temperature of the water in the organism cultivation tank; a temperature correction means for correcting the measured TDS value in accordance with the water temperature measured by the water temperature sensor; A water quality adjustment device for an aquarium for growing organisms.

3. The water quality adjusting device for an organism-growing aquarium according to claim 1 or 2, an abnormality detection means for detecting whether the measured TDS value has remained abnormal for a predetermined period of time or more; a warning means for issuing a warning when the abnormal state detection means detects an abnormal state; A water quality adjustment device for an aquarium for growing organisms.

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