CN115357064B - Automatic pH adjusting device and adjusting method for plant factory nutrient solution - Google Patents
Automatic pH adjusting device and adjusting method for plant factory nutrient solution Download PDFInfo
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- CN115357064B CN115357064B CN202211139401.6A CN202211139401A CN115357064B CN 115357064 B CN115357064 B CN 115357064B CN 202211139401 A CN202211139401 A CN 202211139401A CN 115357064 B CN115357064 B CN 115357064B
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- 235000015097 nutrients Nutrition 0.000 title claims abstract description 141
- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 169
- 230000001105 regulatory effect Effects 0.000 claims abstract description 57
- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 46
- 229910052760 oxygen Inorganic materials 0.000 claims description 46
- 239000001301 oxygen Substances 0.000 claims description 46
- 230000001502 supplementing effect Effects 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 31
- 238000003756 stirring Methods 0.000 claims description 31
- 230000007246 mechanism Effects 0.000 claims description 27
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 18
- 239000002253 acid Substances 0.000 claims description 17
- 239000003513 alkali Substances 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000000243 solution Substances 0.000 description 119
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 241000196324 Embryophyta Species 0.000 description 10
- 235000016709 nutrition Nutrition 0.000 description 5
- 230000035764 nutrition Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000003020 moisturizing effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000012364 cultivation method Methods 0.000 description 1
- 238000012136 culture method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001564 haversian system Anatomy 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001706 oxygenating effect Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
- G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G2031/006—Soilless cultivation, e.g. hydroponics with means for recycling the nutritive solution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Hydroponics (AREA)
Abstract
The invention discloses an automatic pH adjusting device and an adjusting method for nutrient solution in a plant factory, and the technical scheme is characterized by comprising a water outlet pipe, wherein the water outlet pipe is used for sending out the nutrient solution in hydroponic equipment; the adjusting tanks are connected with the water outlet pipe and are used for adjusting the PH value of the nutrient solution; the water return pipe is used for conveying the nutrient solution regulated by the regulating tank to the water culture equipment; the monitoring sensor is arranged in the hydroponic device and is used for detecting the PH value of the nutrient solution in the hydroponic device; the regulating sensors are arranged in each regulating tank and are used for detecting the PH value of the nutrient solution in the regulating tank; and the controller is connected with the monitoring sensor and the adjusting sensor. The PH value can be automatically adjusted by adjusting the settings of the sensor, the monitoring sensor, the adjusting tank and the controller.
Description
Technical Field
The invention relates to the technical field of nutrient solution pH value adjustment, in particular to an automatic nutrient solution pH value adjusting device and an automatic nutrient solution pH value adjusting method for a plant factory.
Background
Soilless culture refers to a cultivation method in which water, turf or forest leaf rot soil, vermiculite and other mediums are used as matrixes for fixing plants, the plant roots can be directly contacted with nutrient solution, and the nutrient solution components in soilless culture are easy to control and can be adjusted at any time. The nutrient solution components in the soilless culture are easy to control and can be adjusted at any time, the soilless culture is divided into water culture, fog culture and medium culture according to different culture mediums, and the water culture refers to a culture method that plant roots are directly contacted with the nutrient solution without a matrix.
In the process of water planting, plants can continuously absorb required components in the nutrient solution and release or secrete generated substances into the nutrient solution, so that the components of the water planting nutrient solution can change along with the change of time, and the pH value of the nutrient solution is changed. The growth of plants needs a proper pH value range, otherwise, the absorption of the plant root system to the needed components in the nutrient solution is affected, so that the pH value of the nutrient solution needs to be frequently adjusted in the water planting process, but the existing water planting equipment lacks an automatic adjusting function for the nutrient solution.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an automatic pH value adjusting device for plant factory nutrient solution, which can automatically adjust the pH value through the arrangement of an adjusting sensor, a monitoring sensor, an adjusting tank and a controller.
In order to achieve the above purpose, the present invention provides the following technical solutions: the automatic pH adjusting device for the plant factory nutrient solution comprises a water outlet pipe, wherein the water outlet pipe is used for sending out the nutrient solution in the hydroponic device;
The adjusting tanks are connected with the water outlet pipe and are used for adjusting the PH value of the nutrient solution;
The water return pipe is used for conveying the nutrient solution regulated by the regulating tank to the water culture equipment;
The monitoring sensor is arranged in the hydroponic device and is used for detecting the PH value of the nutrient solution in the hydroponic device;
The regulating sensors are arranged in each regulating tank and are used for detecting the PH value of the nutrient solution in the regulating tank;
And the controller is connected with the monitoring sensor and the adjusting sensor.
The invention is further provided with: the water outlet pipe is respectively connected with the plurality of regulating tanks through a plurality of communicating pipes, a first electric control valve is arranged on the communicating pipes, and the electric control valve is connected with the controller to sequentially inject nutrient solution into the regulating tanks.
The invention is further provided with: the regulating tank is communicated with an acid liquor pipe for injecting acid liquor into the regulating tank and an alkali liquor pipe for injecting alkali liquor into the regulating tank, and a stirring device for uniformly mixing the nutrient solution with the injected acid liquor and alkali liquor is arranged in the regulating tank.
The invention is further provided with: the stirring device comprises a plurality of stirring plates rotating around an axis, and turbulence holes penetrating through the stirring plates are arranged on each stirring plate.
The invention is further provided with: the nutrient solution supplying device also comprises an oxygen supplying mechanism which is communicated with the water outlet pipe and the water return pipe and is used for supplying oxygen to the nutrient solution.
The invention is further provided with: the water outlet pipe is arranged at the bottom of the water planting device, and the water return pipe is arranged at a position, close to the top, of one side of the water planting device;
The water return pipe is positioned above the oxygen supplementing mechanism, the water outlet pipe is positioned below the oxygen supplementing mechanism, the water inlet pipe for guiding the nutrient solution to flow into the oxygen supplementing mechanism is arranged at the bottom of the water return pipe, and the connecting pipe for feeding the nutrient solution supplemented by the oxygen supplementing mechanism into the water outlet pipe is arranged at the bottom of the oxygen supplementing mechanism.
The invention is further provided with: the water return pipe is provided with a second electric control valve, and the second electric control valve is positioned at one side of the water supply pipe far away from the hydroponic device;
the water outlet pipe is provided with a third electric control valve which is positioned at one side of the connecting pipe far away from the hydroponic device;
The water supply pipe and the connecting pipe are respectively provided with a fourth electric control valve and a fifth electric control valve, and the second electric control valve, the third electric control valve, the fourth electric control valve and the fifth electric control valve are connected with the controller.
The invention is further provided with: the oxygen supplementing mechanism comprises an oxygen supplementing pipe which is vertically arranged, a guide plate which guides nutrient solution to flow spirally in the oxygen supplementing pipe and a blocking plate which is arranged on the guide plate, wherein a plurality of through holes which penetrate through the guide plate are formed in the blocking plate.
The invention is further provided with: the water return pipe is provided with a first water pump for feeding the nutrient solution after being regulated by the regulating tank into the hydroponic device, the water outlet pipe is provided with a second water pump for feeding the nutrient solution in the hydroponic device into the regulating tank, and the first water pump and the second water pump are connected with the controller.
Another object of the present invention is to provide an automatic PH adjustment method, where when the monitoring sensor monitors that the PH value of the nutrient solution in the hydroponic apparatus does not conform to a preset range:
The controller controls the fourth electric control valve and the fifth electric control valve to be closed, the second electric control valve and the third electric control valve to be opened, and the first water pump and the second water pump to be opened;
the controller controls the plurality of first electromagnetic valves to be in an open state in sequence, and controls the adjusting tank filled with the nutrient solution to add acid liquor or alkali liquor according to the PH value detected by the adjusting sensor until the PH value detected by the adjusting sensor is in a preset range;
when the monitoring sensor monitors that the PH value of nutrient solution in the hydroponic device accords with a preset range, the controller controls the fourth electric control valve and the fifth electric control valve to be opened, the second electric control valve and the third electric control valve to be opened, the first water pump is opened, and the second water pump is closed.
In summary, compared with the prior art, the invention has the following beneficial effects: the PH value can be automatically adjusted by setting the adjusting sensor, the monitoring sensor, the adjusting tank and the controller.
Drawings
FIG. 1 is a schematic view of the overall structure of an embodiment;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a schematic diagram of a conditioning tank of an embodiment;
FIG. 4 is an enlarged schematic view of portion B of FIG. 1;
FIG. 5 is a schematic diagram of an oxygen replenishment mechanism according to an embodiment;
Fig. 6 is an enlarged schematic view of a portion C of fig. 5.
In the figure: 1. a water outlet pipe; 11. a communicating pipe; 12. a connecting pipe; 2. a water return pipe; 21. a water supply pipe; 3. an adjustment tank; 31. an acid liquor pipe; 32. an alkali liquor tube; 33. a nutrient canal; 34. a drain pipe; 4. a storage barrel; 5. a stirring device; 51. a stirring shaft; 52. a stirring plate; 521. turbulence holes; 53. a support plate; 54. a connecting rod; 6. an oxygen supplementing mechanism; 61. an oxygen supplementing tube; 62. a guide plate; 63. a blocking plate; 631. a through hole; 64. a vertical rod; 10. and (5) water planting equipment.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described in the following with reference to the accompanying drawings, and based on the embodiments of the present application, other similar embodiments obtained by those skilled in the art without making any inventive effort should be included in the scope of protection of the present application. In addition, directional words such as "upper", "lower", "left", "right", and the like, as used in the following embodiments are merely directions with reference to the drawings, and thus, the directional words used are intended to illustrate, not to limit, the application.
The invention will be further described with reference to the drawings and preferred embodiments.
Embodiment one: the utility model provides an automatic adjusting device of nutrient solution PH that can be used to plant factory, see fig. 1-6, including be used for the outlet pipe 1 that the nutrient solution in the hydroponic device 10 was sent out, be used for carrying out the adjustment of PH value to the nutrient solution that outlet pipe 1 sent out adjust jar 3, be used for the wet return 2 that returns the nutrient solution after adjusting jar 3 and cultivate device 10, set up in hydroponic device 10 and be used for detecting the monitoring sensor of nutrient solution PH value in hydroponic device 10, set up in adjusting jar 3 be used for detecting the regulation sensor of nutrient solution PH value in adjusting jar 3 and with detect sensor and the controller that adjusts the sensor and be connected.
The PH value of nutrient solution in among the water planting equipment 10 is monitored through the monitoring sensor, when the PH value of nutrient solution does not accord with the PH value range of predetermineeing, nutrient solution in among the water planting equipment 10 is taken out through outlet pipe 1, adjust the PH value of nutrient solution in among the adjusting tank 3, until the monitoring sensor detects that the PH value of nutrient solution in among the adjusting tank 3 is in the PH value range of predetermineeing, the nutrient solution after adjusting tank 3 is sent back to among the water planting equipment 10 to the wet return pipe 2, because the quantity of nutrient solution in among the water planting equipment 10 is greater than the quantity of nutrient solution that adjusting tank 3 once adjusted, the outlet pipe 1 is continuous to take out the nutrient solution in among the water planting equipment 10 and adjust through adjusting tank 3, the wet return pipe 2 will adjust the nutrient solution that finishes in real time and send back to the water planting equipment 10, until the monitoring sensor detects that the PH value that monitors among the water planting equipment 10 accords with the PH value range of predetermineeing.
The adjusting tank 3 can not continuously receive the nutrient solution sent out by the water outlet pipe 1 when the PH value of the nutrient solution in the adjusting tank 3 is adjusted, the nutrient solution can be continuously received after the PH value of the nutrient solution in the adjusting tank 3 is adjusted to a preset PH value range and the adjusted nutrient solution is sent out, the nutrient solution is received again, the adjusting efficiency of the PH value of the nutrient solution is greatly reduced, a plurality of adjusting tanks 3 are arranged in the embodiment, the water outlet pipe 1 simultaneously inputs the nutrient solution into one adjusting tank 3, the water outlet pipe 1 sequentially inputs the nutrient solution into the plurality of adjusting tanks 3, and the adjusting tanks 3 are arranged in the plurality of adjusting tanks 3, so that when the nutrient solution is injected into the adjusting tanks 3, the nutrient solution is returned to the hydroponic device 10 through the water return pipe 2 after the adjusting tanks 3 are adjusted in the rest of the adjusting tanks 3, the PH value adjusting efficiency of the nutrient solution can be improved, and the circulating flow of the nutrient solution in the hydroponic device 10 can be maintained.
Specifically, a plurality of communicating pipes 11 are fixedly connected to the water outlet pipe 1, the plurality of communicating pipes 11 respectively correspond to the plurality of adjusting tanks 3, the communicating pipes 11 are fixedly connected to the corresponding adjusting tanks 3, and the water outlet pipe 1 injects nutrient solution into the adjusting tanks 3 through the communicating pipes 11; in order to control the water outlet pipe 1 to independently inject the nutrient solution into the regulating tank 3, a first electric control valve is arranged on each communicating pipe 11, the first electric control valve is connected with a controller, and the opening and closing of the first electric control valve are controlled by the controller.
In order to control the amount of nutrient solution injected into the regulating tanks 3, a liquid level sensor is arranged in each regulating tank 3, a controller is connected with the liquid level sensor, a preset liquid level is arranged, and when the liquid level detected by the liquid level sensor in the regulating tank 3 reaches the preset liquid level, the controller controls a first electric control valve on a communicating pipe 11 connected with the regulating tank 3 to be closed.
The controller numbers a plurality of first control valves and a plurality of liquid level sensors, and the numbers of the first control valves and the corresponding liquid level sensors are the same.
In the use process of the nutrient solution, not only the pH value of the nutrient solution can change, but also the concentration of nutrient substances in the nutrient solution can change, the concentration of the nutrient substances in the nutrient solution is mainly represented by the concentration of inorganic salt in the nutrient solution, and in order to detect the concentration of the inorganic salt in the nutrient solution, a first EC sensor is arranged in the hydroponic device 10, and the concentration of the inorganic salt in the hydroponic device 10 is monitored by the first EC sensor to accord with a preset concentration range.
The regulating tank 3 can supplement the inorganic salt concentration in the nutrient solution, a second EC sensor is arranged in the regulating tank 3, and whether the inorganic salt concentration in the nutrient solution in the regulating tank 3 accords with a preset concentration range is detected by the second EC sensor; when the inorganic salt concentration in the water planting device 10 does not meet the preset concentration range, the water outlet pipe 1 conveys the nutrient solution in the water planting device 10 to the regulating tank 3, the regulating tank 3 carries out inorganic salt concentration regulation firstly until the second EC sensor detects that the inorganic salt concentration of the nutrient solution in the regulating tank 3 meets the preset concentration range, then the regulating sensor in the regulating tank 3 detects the PH value of the nutrient solution in the regulating tank 3, if the PH value meets the preset PH value range, the nutrient solution in the regulating tank 3 is directly conveyed to the water planting device 10 through the water return pipe 2, if the PH value does not meet the requirement, the regulating tank 3 regulates the PH value of the nutrient solution until the nutrient solution in the regulating tank 3 meets the preset PH value range, and then the nutrient solution in the regulating tank 3 is conveyed to the water planting device 10 through the water return pipe 2.
Specifically, the detection sensor and the adjustment sensor are both provided as PH sensors.
The outside of the adjusting tank 3 is fixedly connected with an acid liquor pipe 31 for injecting acid liquor into the adjusting tank 3, an alkali liquor pipe 32 for injecting alkali liquor into the adjusting tank 3 and a nutrition pipe 33 for injecting concentrated nutrition liquor into the adjusting tank 3, the acid liquor pipe 31, the alkali liquor pipe 32 and the nutrition pipe 33 are all provided with liquid injection pumps, the liquid injection pumps are used for injecting the acid liquor, the alkali liquor and the concentrated nutrition liquor into the adjusting tank 3, and the liquid injection pumps are connected with a controller.
In order to enable the nutrient solution in the regulating tank 3 to be fully mixed with the acid solution, the alkali solution or the concentrated nutrient solution, a stirring device 5 is arranged in the regulating tank 3, and the nutrient solution in the regulating tank 3 is stirred by the stirring device 5. In this embodiment, in order to ensure the sufficiency of stirring, the stirring device 5 is provided with a plurality of stirring plates 52 rotating around an axis, turbulence holes 521 penetrating through the stirring plates 52 are provided on each stirring plate 52, and by setting the turbulence holes 521, the nutrient solution can be disturbed at the turbulence holes 521 when the stirring plate 52 stirs the nutrient solution, so that turbulence occurs, and the nutrient solution can be mixed with the alkali solution, the acid solution or the concentrated nutrient solution more uniformly.
In the present embodiment, the stirring device 5 further includes a stirring shaft 51 provided in the adjustment tank 3 and a connecting rod 54 connecting the stirring shaft 51 with the stirring plate 52; a plurality of stirring plates 52 are arranged around the stirring shaft 51 and rotate around the axis of the stirring shaft 51 under the driving of the stirring shaft 51; specifically, the adjusting tank 3 is a drum with an open top and a vertical axis, the supporting plate 53 is arranged at the top of the adjusting tank 3, two ends of the rotating shaft are respectively and rotatably connected to the supporting plate 53 and the bottom of the adjusting tank 3, and the stirring shaft 51 and the adjusting tank 3 are coaxially arranged. The supporting plate 53 is fixedly connected with a motor which is in transmission connection with the rotating shaft and is connected with the controller.
Specifically, a storage barrel 4 is arranged below the plurality of adjusting tanks 3, the nutrient solution of which the adjusting tanks 3 are used for adjusting is sent into the storage barrel 4, and the water return pipe 2 returns the nutrient solution in the storage barrel 4 to the hydroponic device 10. Specifically, a drain pipe 34 for conveying the nutrient solution in the adjusting tanks 3 to the storage barrel 4 is fixedly connected to the bottom of each adjusting tank 3, and a sixth electric control valve is arranged on the drain pipe 34 and connected with the controller.
Specifically, the embodiment further comprises an oxygen supplementing mechanism 6, wherein the oxygen supplementing mechanism 6 is communicated with the water outlet pipe 1 and the water return pipe 2 and is used for supplementing oxygen to the nutrient solution; the water outlet pipe 1 is arranged at the bottom of the water planting device 10, the water return pipe 2 is arranged at a position, close to the top, of one side of the water planting device 10, and the height of the water return pipe 2 is lower than the liquid level in the water planting device 10; the water return pipe 2 is positioned above the oxygen supplementing mechanism 6, the water outlet pipe 1 is positioned below the oxygen supplementing mechanism 6, the water inlet pipe 21 for guiding the nutrient solution to flow into the oxygen supplementing mechanism 6 is arranged at the bottom of the water return pipe 2, and the connecting pipe 12 for feeding the nutrient solution supplemented by the oxygen supplementing mechanism 6 into the water outlet pipe 1 is arranged at the bottom of the oxygen supplementing mechanism 6.
The water return pipe 2 is provided with a second electric control valve which is positioned at one side of the water supply pipe 21 far away from the hydroponic device 10; the water outlet pipe 1 is provided with a third electric control valve, and the third electric control valve is positioned at one side of the connecting pipe 12 far away from the hydroponic device 10; the water supply pipe 21 and the connecting pipe 12 are respectively provided with a fourth electric control valve and a fifth electric control valve, and the second electric control valve, the third electric control valve, the fourth electric control valve and the fifth electric control valve are connected with the controller.
When the PH value of the nutrient solution in the hydroponic device 10 accords with the preset PH value range and the inorganic salt concentration accords with the preset concentration range, the second electric control valve is closed, the fourth electric control valve and the fifth electric control valve are opened, water in the hydroponic device 10 naturally flows into the water feeding pipe 21 through the water return pipe 2, then flows into the oxygen supplementing mechanism 6 through the water feeding pipe 21, then enters the water outlet pipe 1 through the connecting pipe 12 after the oxygen supplementing technology, and then is returned to the hydroponic device 10 through the water outlet pipe 1.
Specifically, the oxygen supplementing mechanism 6 includes an oxygen supplementing tube 61 vertically arranged, a guide plate 62 for guiding the nutrient solution to flow spirally in the oxygen supplementing tube 61, and a blocking plate 63 arranged on the guide plate 62, and a plurality of through holes 631 penetrating the guide plate 62 are arranged on the blocking plate 63. During the course that nutrient solution spiral downwardly flowing under the effect of guide board 62, can pass through a plurality of barrier plates 63 in proper order, under the barrier of barrier plate 63, the nutrient solution can produce the torrent and can be in the middle of the nutrient solution with surrounding air is rolled into when the torrent takes place, makes nutrient solution and air mix for the oxygen in the middle of the nutrient solution can abundant absorption air realizes the oxygenating to the nutrient solution.
Specifically, the oxygen supplementing pipe 61 is provided as a standpipe, and the diameter of the oxygen supplementing pipe 61 is larger than twice the diameter of the water supply pipe 21 and smaller than three times the diameter of the water supply pipe 21, so that the oxygen supplementing pipe 61 can be filled with air instead of nutrient solution. A vertical rod 64 is arranged in the oxygen supplementing pipe 61, and the guide plate 62 is spirally arranged around the vertical rod 64. The connection pipe 12 is fixedly connected to the bottom of the oxygen supplementing pipe 61.
Be provided with on the wet return 2 and be used for sending into the first water pump of hydroponic device 10 with the nutrient solution after adjusting jar 3 regulation, be provided with on the outlet pipe 1 and be arranged in sending into the second water pump in the adjusting jar 3 with the nutrient solution among the hydroponic device 10, second water pump and first water pump all are located the moisturizing pipe 61 and keep away from hydroponic device 10 one side, are provided with a third water pump in the middle of the connecting pipe 12, and the third water pump can send the nutrient solution after the moisturizing in the moisturizing pipe 61 to in the wet return 2 to can promote the nutrient solution in the wet return 2 to enter into among the hydroponic device 10. The first water pump, the second water pump and the third water pump are connected with the controller.
Embodiment two: an automatic PH adjustment method comprising the steps of:
S01, acquiring inorganic salt concentration data of nutrient solution in the hydroponic device 10 by a first EC sensor in real time and transmitting the data to a controller, judging whether the acquired inorganic salt concentration data is within a preset concentration range by the controller, if not, executing a step S02, and if so, executing a step S10;
s02, the controller controls the fourth electric control valve and the fifth electric control valve to be closed, the second electric control valve and the third electric control valve are opened, the first water pump and the second water pump are opened, the third water pump is closed, the controller controls one of the first electric control valves to be opened, and the other first control valves are closed;
S03, the controller receives the liquid level detected by the liquid level sensor with the same number as the opened first electric control valve, when judging that the received liquid level accords with the preset liquid level, the controller controls the opened first electric control valve to be closed, then opens the first electric control valve with the next number, and executes the step S04, and simultaneously executes the step S03 again;
S04, a controller controls a liquid injection pump on a nutrition pipe 33 of the adjusting tank 3 after grouting in S03 to be turned on, the controller controls a motor on the adjusting tank 3 to be turned on, the controller receives inorganic salt concentration data detected by a second EC sensor in the adjusting tank 3 in real time, the controller judges whether the inorganic salt concentration data accords with a preset concentration range in real time, and when the controller judges that the inorganic salt concentration accords with the preset concentration range, the controller controls the liquid injection pump and the motor to be turned off;
S05, the controller receives the PH value detected by the adjusting sensor in the adjusting tank 3, judges whether the PH value accords with a preset PH value range, if so, executes the step S06, and if not, executes the step S07;
s06, the controller controls a sixth electric control valve on a drain pipe 34 at the bottom of the regulating tank 3 to be opened.
S07, the controller judges whether the PH value is higher than a preset PH value range or lower than the preset PH value range, if the PH value is higher than the preset PH value range, the liquid injection pump on the acid liquid pipe 31 is controlled to be opened, and if the PH value is lower than the preset PH value range, the liquid injection pump on the alkali liquid pipe 32 is controlled to be opened;
S08, the controller controls the motor to be turned on, receives the PH value detected by the adjusting sensor in real time, and controls the liquid injection pump and the motor to be turned off when the controller judges that the PH value accords with a preset PH value range, and controls the sixth electric control valve on the drain pipe 34 at the bottom of the adjusting tank 3 to be turned on.
S09, the controller detects the inorganic salt concentration of the nutrient solution in the hydroponic device 10 in real time through the first EC sensor, when the controller judges that the inorganic salt concentration detected by the first EC sensor accords with a preset concentration range, the execution of the step S03 is stopped, after the execution of the step S04-step S08 which is being executed is completed, the controller controls the fourth electric control valve and the fifth electric control valve to be opened, the second electric control valve and the third electric control valve to be closed, the first water pump and the second water pump to be closed, and the third water pump to be opened;
S10, acquiring the PH value of the nutrient solution in the water planting device 10 by a monitoring sensor, executing the step S01 again when the PH value is judged to be in accordance with a preset PH value range by a controller, and executing the step S11 when the PH value is judged to be not in accordance with the preset PH value range by the controller;
S11, the controller controls the fourth electric control valve and the fifth electric control valve to be closed, the second electric control valve and the third electric control valve are opened, the first water pump and the second water pump are opened, the third water pump is closed, the controller controls one of the first electric control valves to be opened, and the other first control valves are closed;
S12, the controller receives the liquid level detected by the liquid level sensor with the same number as the opened first electric control valve, when judging that the received liquid level accords with the preset liquid level, the controller controls the opened first electric control valve to be closed, then opens the first electric control valve with the next number, and executes the step S13, and simultaneously executes the step S12 again;
S13, the controller receives the PH value detected by the adjusting sensor in the adjusting tank 3 after grouting in S12, judges whether the PH value is higher than a preset PH value range or lower than the preset PH value range, if so, controls the liquid injection pump on the acid liquor pipe 31 to be opened, and if not, controls the liquid injection pump on the alkali liquor pipe 32 to be opened;
And S14, the controller controls the motor to be turned on, receives the PH value detected by the regulating sensor in real time, controls the liquid injection pump and the motor to be turned off when the controller judges that the PH value accords with a preset PH value range, and controls the sixth electric control valve on the drain pipe 34 at the bottom of the regulating tank 3 to be turned on.
And S09, the controller detects the PH value of the nutrient solution in the hydroponic device 10 in real time through the monitoring sensor, when the controller judges that the PH value detected by the monitoring sensor accords with the preset PH value range, the execution of the step S12 is stopped, after the execution of the step S13 and the step S14 which are being executed is finished, the controller controls the fourth electric control valve and the fifth electric control valve to be opened, the second electric control valve and the third electric control valve to be closed, the first water pump and the second water pump to be closed, and the third water pump to be opened.
When the water planting device 10 works normally, the fourth electric control valve and the fifth electric control valve are opened, the second electric control valve and the third electric control valve are closed, the first water pump and the second water pump are closed, the third water pump is opened, and the normal work means that the PH value in the water planting device 10 accords with a preset PH value range, and the inorganic salt concentration accords with a preset concentration range.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (2)
1. An automatic nutrient solution pH adjusting device for a plant factory is characterized in that: the water planting device comprises a water outlet pipe (1), wherein the water outlet pipe (1) is used for sending out nutrient solution in water planting equipment (10);
The adjusting tanks (3) are arranged, the adjusting tanks (3) are connected with the water outlet pipe (1) and are used for adjusting the PH value of the nutrient solution;
The water return pipe (2) is used for conveying the nutrient solution regulated by the regulating tank (3) to the water culture equipment (10);
the monitoring sensor is arranged in the water planting device (10) and is used for detecting the PH value of the nutrient solution in the water planting device (10);
The adjusting sensors are arranged in each adjusting tank (3) and are used for detecting the PH value of the nutrient solution in the adjusting tank (3);
The controller is connected with the monitoring sensor and the adjusting sensor;
The water outlet pipe (1) is respectively connected with the plurality of regulating tanks (3) through the plurality of communicating pipes (11), a first electric control valve is arranged on the communicating pipes (11), and the first electric control valve is connected with the controller so as to sequentially inject nutrient solution into the regulating tanks (3);
An acid liquor pipe (31) for injecting acid liquor into the regulating tank (3) and an alkali liquor pipe (32) for injecting alkali liquor into the regulating tank (3) are communicated with the regulating tank (3), and a stirring device (5) for uniformly mixing the nutrient solution with the injected acid liquor and alkali liquor is arranged in the regulating tank (3);
The stirring device (5) comprises a plurality of stirring plates (52) rotating around an axis, and turbulence holes (521) penetrating the stirring plates (52) are arranged on each stirring plate (52);
a storage barrel is arranged below the plurality of regulating tanks, the nutrient solution which is regulated in the regulating tanks is sent into the storage barrel, and the nutrient solution in the storage barrel is returned to the water planting equipment by the water return pipe;
The device also comprises an oxygen supplementing mechanism (6), wherein the oxygen supplementing mechanism (6) is communicated with the water outlet pipe (1) and the water return pipe (2) and is used for supplementing oxygen to the nutrient solution;
The water outlet pipe (1) is arranged at the bottom of the water planting device (10), and the water return pipe (2) is arranged at a position, close to the top, of one side of the water planting device (10); the height of the water return pipe (2) is lower than the height of the liquid level in the water planting equipment (10);
The water return pipe (2) is positioned above the oxygen supplementing mechanism (6), the water outlet pipe (1) is positioned below the oxygen supplementing mechanism (6), the bottom of the water return pipe (2) is provided with a water inlet pipe (21) for guiding nutrient solution to flow into the oxygen supplementing mechanism (6), and the bottom of the oxygen supplementing mechanism (6) is provided with a connecting pipe (12) for feeding the nutrient solution supplemented by the oxygen supplementing mechanism (6) into the water outlet pipe (1);
the oxygen supplementing mechanism (6) comprises an oxygen supplementing pipe (61) which is vertically arranged, a guide plate (62) which guides nutrient solution to flow spirally in the oxygen supplementing pipe (61) and a blocking plate (63) which is arranged on the guide plate (62), wherein a plurality of through holes (631) which penetrate through the guide plate (62) are formed in the blocking plate (63);
a vertical rod (64) is arranged in the oxygen supplementing pipe (61), and the guide plate (62) is spirally arranged around the vertical rod (64);
The water return pipe (2) is provided with a second electric control valve, and the second electric control valve is positioned at one side of the water supply pipe (21) far away from the hydroponic device (10);
a third electric control valve is arranged on the water outlet pipe (1), and the third electric control valve is positioned at one side of the connecting pipe (12) far away from the hydroponic device (10);
The upper water pipe (21) and the connecting pipe (12) are respectively provided with a fourth electric control valve and a fifth electric control valve, and the second electric control valve, the third electric control valve, the fourth electric control valve and the fifth electric control valve are connected with the controller;
The water return pipe (2) is provided with a first water pump for feeding the nutrient solution regulated by the regulating tank (3) into the water planting equipment (10), the water outlet pipe (1) is provided with a second water pump for feeding the nutrient solution in the water planting equipment (10) into the regulating tank (3), and the first water pump and the second water pump are connected with the controller;
when the PH value of nutrient solution in the hydroponic device (10) accords with the preset PH value range, and the inorganic salt concentration accords with the preset concentration range, the second electric control valve and the third electric control valve are closed, the fourth electric control valve and the fifth electric control valve are opened, water in the hydroponic device (10) naturally flows into the water supply pipe (21) through the water return pipe (2), then flows into the oxygen supplementing mechanism (6) through the water supply pipe (21), and after oxygen supplementing, the water enters the water outlet pipe (1) through the connecting pipe (12), and then is sent back to the hydroponic device (10) through the water outlet pipe (1).
2. An automatic pH adjusting method, using the nutrient solution pH automatic adjusting device for plant factory according to claim 1, characterized in that: when the monitoring sensor monitors that the PH value of the nutrient solution in the hydroponic device (10) does not accord with a preset range:
The controller controls the fourth electric control valve and the fifth electric control valve to be closed, the second electric control valve and the third electric control valve to be opened, and the first water pump and the second water pump to be opened;
the controller controls the plurality of first electromagnetic valves to be in an open state in sequence, and controls the adjusting tank (3) filled with nutrient solution to add acid liquor or alkali liquor according to the PH value detected by the adjusting sensor until the PH value detected by the adjusting sensor is in a preset range;
when the monitoring sensor monitors that the PH value of nutrient solution in the hydroponic device (10) accords with a preset range, the controller controls the fourth electric control valve and the fifth electric control valve to be opened, the second electric control valve and the third electric control valve are opened, the first water pump is opened, and the second water pump is closed.
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Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0496911A1 (en) * | 1991-01-30 | 1992-08-05 | Erma Cr. Incorporation | Hydroponic growing system |
| CN2170626Y (en) * | 1993-07-21 | 1994-07-06 | 沈西岩 | Water supply oxygen increasing device for biological culture or plant cultivating |
| FR2750889A1 (en) * | 1996-06-05 | 1998-01-16 | Aga Ab | Device for injection of water into gas for use in fish farms |
| JP2006042819A (en) * | 2005-07-04 | 2006-02-16 | Yasuo Kubota | Method for injecting atmosphere into aquarium and device for injecting atmosphere |
| CN203761997U (en) * | 2014-03-11 | 2014-08-13 | 福建漳平金禾生态农业发展有限公司 | Oxygen aeration device for plant soilless culture |
| CN205922333U (en) * | 2016-05-21 | 2017-02-08 | 广东粤三胖农业科技有限责任公司 | Full -automatic intelligence is ventilated and is traded liquid water planting case |
| CN208972113U (en) * | 2018-08-31 | 2019-06-14 | 天津市华农种子有限公司 | A kind of circulation vegetable seeds incubator |
| CN109937867A (en) * | 2019-04-12 | 2019-06-28 | 天津天极农业科技发展有限公司 | A kind of scale soilless culture nutrient fluid management system |
| CN110282815A (en) * | 2019-06-11 | 2019-09-27 | 芜湖浩睿环保科技有限公司 | A kind of rural sewage ecological processing system and technique coupling modern cultivation technique |
| KR20190128407A (en) * | 2018-05-08 | 2019-11-18 | 청인바이오텍 주식회사 | Ginseng water culture apparatus for home |
| CN209931140U (en) * | 2019-04-12 | 2020-01-14 | 天津天极农业科技发展有限公司 | Large-scale soilless culture nutrient solution management system |
| CN209983276U (en) * | 2019-05-27 | 2020-01-24 | 厦门绿方舟鱼菜科技有限公司 | Wall-mounted water planting green plant picture frame |
| CN210825593U (en) * | 2019-08-10 | 2020-06-23 | 张晓惠 | Sewage treatment ozone reactor for promoting ozone dissolution |
| CN111374035A (en) * | 2018-12-29 | 2020-07-07 | 北京绿里生态科技有限公司 | Nutrient solution tank integrated cultivation system and nutrient solution class ratio detection method |
| CN113875575A (en) * | 2021-10-25 | 2022-01-04 | 河北工程大学 | Automatic hydroponic device of facility agriculture |
| CN216236417U (en) * | 2021-11-19 | 2022-04-08 | 四川南玻节能玻璃有限公司 | Edge grinding machine sewage treatment circulation system |
| CN216513222U (en) * | 2021-12-17 | 2022-05-13 | 潍坊茂源生物科技有限公司 | Methyl isopropyl ketone effluent treatment plant |
| CN114847215A (en) * | 2022-05-26 | 2022-08-05 | 武汉联渔机械设备有限公司 | Circulating water culture system, control device, method and storage medium |
-
2022
- 2022-09-19 CN CN202211139401.6A patent/CN115357064B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0496911A1 (en) * | 1991-01-30 | 1992-08-05 | Erma Cr. Incorporation | Hydroponic growing system |
| CN2170626Y (en) * | 1993-07-21 | 1994-07-06 | 沈西岩 | Water supply oxygen increasing device for biological culture or plant cultivating |
| FR2750889A1 (en) * | 1996-06-05 | 1998-01-16 | Aga Ab | Device for injection of water into gas for use in fish farms |
| JP2006042819A (en) * | 2005-07-04 | 2006-02-16 | Yasuo Kubota | Method for injecting atmosphere into aquarium and device for injecting atmosphere |
| CN203761997U (en) * | 2014-03-11 | 2014-08-13 | 福建漳平金禾生态农业发展有限公司 | Oxygen aeration device for plant soilless culture |
| CN205922333U (en) * | 2016-05-21 | 2017-02-08 | 广东粤三胖农业科技有限责任公司 | Full -automatic intelligence is ventilated and is traded liquid water planting case |
| KR20190128407A (en) * | 2018-05-08 | 2019-11-18 | 청인바이오텍 주식회사 | Ginseng water culture apparatus for home |
| CN208972113U (en) * | 2018-08-31 | 2019-06-14 | 天津市华农种子有限公司 | A kind of circulation vegetable seeds incubator |
| CN111374035A (en) * | 2018-12-29 | 2020-07-07 | 北京绿里生态科技有限公司 | Nutrient solution tank integrated cultivation system and nutrient solution class ratio detection method |
| CN109937867A (en) * | 2019-04-12 | 2019-06-28 | 天津天极农业科技发展有限公司 | A kind of scale soilless culture nutrient fluid management system |
| CN209931140U (en) * | 2019-04-12 | 2020-01-14 | 天津天极农业科技发展有限公司 | Large-scale soilless culture nutrient solution management system |
| CN209983276U (en) * | 2019-05-27 | 2020-01-24 | 厦门绿方舟鱼菜科技有限公司 | Wall-mounted water planting green plant picture frame |
| CN110282815A (en) * | 2019-06-11 | 2019-09-27 | 芜湖浩睿环保科技有限公司 | A kind of rural sewage ecological processing system and technique coupling modern cultivation technique |
| CN210825593U (en) * | 2019-08-10 | 2020-06-23 | 张晓惠 | Sewage treatment ozone reactor for promoting ozone dissolution |
| CN113875575A (en) * | 2021-10-25 | 2022-01-04 | 河北工程大学 | Automatic hydroponic device of facility agriculture |
| CN216236417U (en) * | 2021-11-19 | 2022-04-08 | 四川南玻节能玻璃有限公司 | Edge grinding machine sewage treatment circulation system |
| CN216513222U (en) * | 2021-12-17 | 2022-05-13 | 潍坊茂源生物科技有限公司 | Methyl isopropyl ketone effluent treatment plant |
| CN114847215A (en) * | 2022-05-26 | 2022-08-05 | 武汉联渔机械设备有限公司 | Circulating water culture system, control device, method and storage medium |
Non-Patent Citations (1)
| Title |
|---|
| 高技术的新型肥料;刘悦义;广东科技;19991231(第08期);第33页 * |
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