CN109220764B

CN109220764B - Vegetable planting system of plant factory

Info

Publication number: CN109220764B
Application number: CN201811245813.1A
Authority: CN
Inventors: 吴娇; 童玉珍
Original assignee: Gaoan Research Institute Research Center For Wide Bandgap Semiconductor Of Peking University
Current assignee: Gaoan Research Institute Research Center For Wide Bandgap Semiconductor Of Peking University
Priority date: 2018-10-24
Filing date: 2018-10-24
Publication date: 2021-05-28
Anticipated expiration: 2038-10-24
Also published as: CN109220764A

Abstract

The invention provides a vegetable planting system and equipment for a plant factory, which comprises the plant factory, four plant growth frames, a water circulation system, a plant lighting system, a temperature and humidity control system, a gas circulation system, a nutrient solution supply system, a liquid crystal display module and a key input module, wherein each plant growth frame comprises four support columns, three layers of first planting frames which are uniformly distributed are arranged among the support columns, the second planting frame can be stretched through a movable arm, the second planting frame is pulled upwards and is abutted against a groove at the bottom of the second planting frame through a rotating support rod, so that the second planting frame is fixed, fungus plants can be planted in the third planting frame because the fungus plants do not need illumination, the carbon dioxide required by vegetable photosynthesis can be generated by the growth of the fungus plants, the supply of the carbon dioxide can be effectively reduced, and the second planting frame can be recovered through the movable arm, the occupied space is reduced, and the use is more convenient.

Description

Vegetable planting system of plant factory

Technical Field

The invention relates to the technical field of plant factories, in particular to a vegetable planting system of a plant factory.

Background

The plant factory is a high-efficiency agricultural system for realizing annual continuous production of crops by high-precision environmental control in a facility, and is a labor-saving production mode which automatically controls the environmental conditions of temperature, humidity, illumination, CO2 concentration, nutrient solution and the like for plant growth by using an intelligent computer and an electronic sensing system and ensures that the plant growth and development in the facility are not or rarely restricted by natural conditions.

The plant factory is an advanced stage of modern facility agricultural development, is a production system with high investment, high technology and fine equipment, integrates biotechnology, engineering technology and system management, and enables agricultural production to be separated from natural ecological constraint. An industrial agricultural system for producing plant products annually according to a plan is one of the fields with most vigor and potential for absorbing and applying high and new technical achievements in the agricultural industrialization process and represents the development direction of future agriculture.

The existing vegetable planting system of the plant factory has the following defects: the design of reducing the supply of carbon dioxide is not provided, and the occupied space is large; the water cannot be recycled well, so that the waste of water resources is caused; the supply of light, moisture and nutrient solution required cannot be regulated according to each growth period of the vegetables; the environment in a plant factory cannot be well regulated, and the safety and the use effect are poor.

How to design a vegetable planting system of a plant factory to solve the problems proposed in the background art.

Disclosure of Invention

The present invention is directed to a vegetable planting system for a plant factory to solve the above-mentioned problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the vegetable planting system of the plant factory comprises the plant factory, four plant growing frames, a water circulation system, a plant lighting system, a temperature and humidity control system, a gas circulation system, a nutrient solution supply system, a liquid crystal display module and a key input module;

the plant growth frame comprises four support columns, a first planting frame with three layers of uniform distribution is installed between the support columns and welded with the support columns, a second planting frame is installed at the bottom of the first planting frame at the bottommost layer, a third planting frame is installed at the bottom of the second planting frame and welded with the support columns, a plurality of planting baskets are installed inside the first planting frame, the second planting frame and the third planting frame, customized cotton is installed inside the planting baskets and embedded inside the planting baskets, water holes are formed among the planting baskets, the planting edges of the bottoms of the first planting frame, the second planting frame and the third planting frame are provided with water holes, the water holes on the planting baskets are symmetrically distributed about the centers of the planting baskets, the bottoms of the first planting frame, the second planting frame and the third planting frame are provided with grooves, the second is planted the frame and the third kind is planted the both sides of frame and is all installed movable bolt, the second is planted the frame and is planted the third kind and plant and all plant the frame through movable bolt connection with the second, the third kind is planted the both sides at the top of frame and all is installed the connecting plate, just the frame welding is planted with the third kind to the connecting plate, install the bull stick between the connecting plate, just the bull stick runs through the central point of connecting plate and puts to with connecting plate clearance fit, branch is all installed at the both ends at bull stick top, just the one end and the bull stick welding of branch, the recess butt of frame bottom is planted with the second to the other end, the handle is installed to one side that the frame was planted to the second, just the handle is planted frame through screw fixed connection with the second.

Preferably, water circulating system includes constant voltage variable frequency water pump and aqueduct, constant voltage variable frequency water pump passes through the aqueduct with the first planting frame at top layer and switches on, plant and switch on through the aqueduct between the limbers at frame bottom edge and the field planting basket that its bottom is adjacent planting frame corresponds the position, the third kind is planted the bottom of frame and is installed sub-liquid pool, sub-liquid pool and the third kind are planted and are switched on through the aqueduct between the limbers of frame bottom, the internally mounted in sub-liquid pool has the catalytic converter, mother liquor pool is installed to one side of constant voltage variable frequency water pump, switch on through the aqueduct between constant voltage variable frequency water pump and the mother liquor pool, the water purifier is installed to one side of mother liquor pool, just all switch on through the aqueduct between water purifier and mother liquor pool and the sub-liquid pool, the side-mounting of sub-liquid pool one side aqueduct has the solenoid valve, the, and the catalytic electrolyzer, the electromagnetic valve and the constant-pressure variable-frequency water pump are electrically connected with the distribution box.

Preferably, the plant lighting system comprises a plurality of LED lamps and a second controller, and the second controller is electrically connected to the LED lamps.

Preferably, the temperature and humidity control system comprises a temperature sensor, a humidity sensor, a first controller, a heating boiler, an air conditioner, a sprayer and a dryer and four relays respectively connected with the heating boiler, the air conditioner, the sprayer and the dryer in series.

Preferably, the gas circulation system comprises a carbon dioxide sensor, a first controller, a relay and an FFU fan filter unit, and the relay and the FFU fan filter unit are connected in series.

Preferably, the nutrient solution feed system includes nutrient solution jar, transfer pump and second controller, just transfer pump and second controller electric connection.

Preferably, the first controller is an STC89C52RC single chip microcomputer, and the second controller is an S7-200 PLC.

Preferably, the temperature sensor is a YX-WD temperature sensor, the humidity sensor is a VP-4 humidity sensor, the carbon dioxide sensor is a MH-Z16 carbon dioxide sensor, the relay is an HH52P11 relay, and the relay is a normally open relay.

Preferably, the liquid crystal display module is an HTG12848A liquid crystal display.

Preferably, the key input module is an independent keyboard for performing control operation, and includes a K1 key, a K2 key and a K3 key, and the K1 key, the K2 key and the K3 key respectively correspond to an I/O port pin of an STC89C52RC single chip microcomputer, and are a set key, an add key and a subtract key in sequence.

Compared with the prior art, the invention has the beneficial effects that:

(1) the second planting frame can be stretched by the movable arm, the second planting frame is pulled upwards, the support rod is abutted to the groove in the bottom of the second planting frame through rotation, and therefore the second planting frame is fixed.

(2) According to the invention, the water guide pipes distributed in an S shape between the planting frames can comprehensively supply water to the planting frames, the wastewater on the planting frames is collected through the sub-liquid pool at the bottom of the third planting frame, then a catalytic electrolyzer is used for flocculating a large amount of micro-particles dispersed in the water body to pretreat the wastewater, then the wastewater is further purified by the water purifier, finally the purified water after treatment is collected through the mother liquid pool, and the purified water is supplied to the planting frames through the water guide pipes by the constant-pressure variable-frequency water pump, so that the cyclic utilization of the water is realized, and the waste of water resources is effectively reduced.

(3) According to the invention, through the program written in by the second controller, the brightness of the LED lamp and the illumination period of the LED lamp can be adjusted according to the growth period of the vegetables, the water supply period and the water supply amount of the constant-pressure variable-frequency water pump can also be adjusted according to the growth period of the vegetables, the nutrient solution supply period and the nutrient solution supply amount of the infusion pump can also be adjusted according to the growth period of the vegetables, the supply of illumination, water and nutrient solution required by each growth period of the vegetables can be met, and the yield, the quality and the stable yield of the vegetables are realized.

(4) The invention can detect the temperature and humidity data in the plant factory in real time through the temperature sensor and the humidity sensor, and send the detected temperature and humidity signals to the first controller, can detect the carbon dioxide concentration in the plant factory in real time through the carbon dioxide sensor, and send the detected concentration data to the first controller, then the first controller transmits the received signals to the HTG12848A liquid crystal display screen, displays the temperature, humidity and carbon dioxide concentration data in real time through the HTG12848A liquid crystal display screen, can respectively set the upper and lower limit values of the temperature, humidity and carbon dioxide concentration through the key input module, when the detected temperature data exceeds the limit value, the first controller closes the relay connected with the heating boiler or the air conditioner in series to carry out heating or cooling work, when the detected humidity data exceeds the limit value, make the relay closure of establishing ties with atomizer or desiccator through first controller, carry out humidification or dehumidification work, when the carbon dioxide concentration data who surveys are less than the lower limit value, make the relay closure of establishing ties with FFU fan filter unit through first controller, inhale the plant factory after filtering the outside air in, supply the required carbon dioxide of vegetables photosynthesis, can satisfy the required temperature in each growth period of vegetables, humidity and carbon dioxide concentration, thereby realize the prolificacy of vegetables, high-quality and steady production, because use the relay to control these powerful equipment and carry out work, through weak current control forceful electric power, it is convenient and simple to use, and safer.

Drawings

FIG. 1 is a schematic structural view of a main body of a plant growth frame according to the present invention;

FIG. 2 is a schematic view of a second planting frame of the present invention;

FIG. 3 is a schematic drawing of a second planting frame according to the present invention;

FIG. 4 is a longitudinal cross-sectional view of a first planting frame of the present disclosure;

FIG. 5 is a diagram of a water circulation system of the present invention;

FIG. 6 is a diagram of a first controller control system of the present invention;

FIG. 7 is a diagram of a control system of a second controller according to the present invention.

Illustration of the drawings: 1-a first planting frame; 2-a second planting frame; 3-a third planting frame; 4-a support column; 5-a movable arm; 6-a movable bolt; 7-a handle; 8-planting basket; 9-a connecting plate; 10-rotating rod; 11-a strut; 12-customizing cotton; 13-water through holes; 14-a groove; 15-an electromagnetic valve; 16-subpoly pool; 17-a catalytic electrolyser; 18-constant pressure variable frequency water pump; 19-mother liquor pool; 20-a water purifier; 21-a distribution box; 22-a water conduit; 23-plant factories; 24-a temperature sensor; 25-a humidity sensor; 26-a carbon dioxide sensor; 27-a first controller; 28-a relay; 29-a warm boiler; 30-air conditioning; 31-a sprayer; 32-a dryer; 33-FFU fan filter unit; 34-a liquid crystal display module; 35-key input module; 36-K1 keys; 37-K2 keys; 38-K3 keys; 39-a second controller; 40-LED lamps; 41-an infusion pump; 42-nutrient solution tank.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

Referring to fig. 1-7, the present invention provides a technical solution: the vegetable planting system of the plant factory comprises a plant factory 23, four plant growing frames, a water circulation system, a plant lighting system, a temperature and humidity control system, an air circulation system, a nutrient solution supply system, a liquid crystal display module 34 and a key input module 35;

the plant growth frame comprises four support columns 4, a first planting frame 1 with three layers of uniform distribution is installed between the support columns 4, the first planting frame 1 is welded with the support columns 4, a second planting frame 2 is installed at the bottom of the first planting frame 1 at the bottommost layer, a third planting frame 3 is installed at the bottom of the second planting frame 2, the third planting frame 3 is welded with the support columns 4, a plurality of basket fixed planting 8 are installed inside the first planting frame 1, the second planting frame 2 and the third planting frame 3, customized cotton 12 is installed inside the fixed planting basket 8, the customized cotton 12 is embedded inside the fixed planting basket 8, water through holes 13 are arranged between the fixed planting baskets 8, the bottom edges of the first planting frame 1, the second planting frame 2 and the third planting frame 3 are all provided with water through holes 13, and the centers of the water through holes 13 on the fixed planting basket 8 are symmetrically distributed, the bottom of the first planting frame 1, the bottom of the second planting frame 2 and the bottom of the third planting frame 3 are provided with grooves 14, movable bolts 6 are arranged on two sides of the second planting frame 2 and the third planting frame 3, movable arms 5 are arranged between the second planting frame 2 and the third planting frame 3, the movable arms 5 are connected with the second planting frame 2 and the third planting frame 3 through the movable bolts 6, connecting plates 9 are arranged on two sides of the top of the third planting frame 3, the connecting plates 9 are welded with the third planting frame 3, rotating rods 10 are arranged between the connecting plates 9, the rotating rods 10 penetrate through the central positions of the connecting plates 9 and are in clearance fit with the connecting plates 9, supporting rods 11 are arranged at two ends of the tops of the rotating rods 10, one ends of the supporting rods 11 are welded with the rotating rods 10, and the other ends of the supporting rods are abutted to the grooves 14 at the bottoms of the second planting frame 2, the handle 7 is installed to one side that the frame 2 was planted to the second, just the frame 2 is planted through screw fixed connection to handle 7 and second, through digging arm 5 and movable bolt 6, can conveniently move about the second and plant frame 2 and receive again and expand the operation, rotates branch 11 through bull stick 10 for branch 11 and recess 14 butt can conveniently play the supporting role when the frame 2 expandes is planted to the second.

Preferably, water circulating system includes constant voltage variable frequency water pump 18 and aqueduct 22, constant voltage variable frequency water pump 18 switches on through aqueduct 22 with the first planting frame 1 of top layer, plant the limbers 13 at frame bottom edge and switch on through aqueduct 22 between the field planting basket 8 of the adjacent planting frame corresponding position in bottom, the son liquid pool 16 is installed to the bottom of third planting frame 3, switch on through aqueduct 22 between the limbers 13 of son liquid pool 16 and third planting frame 3 bottom, the internally mounted of son liquid pool 16 has catalytic electrolysis ware 17, mother liquor pool 19 is installed to one side of constant voltage variable frequency water pump 18, switch on through aqueduct 22 between constant voltage variable frequency water pump 18 and the mother liquor pool 19, water purifier 20 is installed to one side of mother liquor pool 19, just all switch on through aqueduct 22 between water purifier 20 and mother liquor pool 19 and the son liquid pool 16, there is solenoid valve 15 sub-liquid pool 16 one side aqueduct 22's side-mounting, block terminal 21 is installed at the top of constant voltage variable frequency water pump 18, just catalytic electrolysis ware 17, solenoid valve 15 and constant voltage variable frequency water pump 18 all with block terminal 21 electric connection, through catalytic electrolysis ware 17, can flocculate the tiny particle of dispersion in the water in a large number, carry out the preliminary treatment to waste water, through water purifier 20, can carry out further water purification treatment to waste water, through solenoid valve 15, can open or seal aqueduct 22, can control the rivers that sub-liquid pool 16 flows out.

Preferably, the plant lighting system comprises a plurality of LED lamps 40 and a second controller 39, the second controller 39 is electrically connected with the LED lamps 40, the brightness of the LED lamps 40 can be adjusted according to the growth period of the vegetables through a program written by the second controller 39, and the illumination period of the LED lamps 40 can be adjusted.

Preferably, the temperature and humidity control system comprises a temperature sensor 24, a humidity sensor 25, a first controller 27, a boiler 29, an air conditioner 30, a sprayer 31, a dryer 32 and four relays 28 respectively connected in series with the boiler 29, the air conditioner 30, the sprayer 31 and the dryer 32, the temperature and humidity data in the plant factory 23 can be detected in real time through the temperature sensor 24 and the humidity sensor 25, detected temperature and humidity signals are sent to the first controller 27, and the operation of any one or more of the boiler 29, the air conditioner 30, the sprayer 31 and the dryer 32 can be controlled through the first controller 27 and the relays 28.

Preferably, the gas circulation system includes a carbon dioxide sensor 26, a first controller 27, a relay 28 and an FFU fan filter unit 33, and the relay 28 and the FFU fan filter unit 33 are connected in series, so that the carbon dioxide concentration in the plant factory 23 can be detected in real time by the carbon dioxide sensor 26, and the detected concentration data is transmitted to the first controller 27, and the FFU fan filter unit 33 can be controlled to start and stop working by the first controller 27 and the relay 28.

Preferably, the nutrient solution supply system comprises a nutrient solution tank 42, an infusion pump 41 and a second controller 39, the infusion pump 41 is electrically connected with the second controller 39, and the nutrient solution supply period of the infusion pump 41 can be adjusted according to the growth period of vegetables through a program written by the second controller 39, and the supply amount of the nutrient solution can be adjusted.

Preferably, the first controller 27 is an STC89C52RC single chip microcomputer, and the second controller 39 is an S7-200PLC, which has the advantages of strong anti-interference capability, stable and reliable operation, and the like.

Preferably, the temperature sensor 24 is a YX-WD temperature sensor, the humidity sensor 25 is a VP-4 humidity sensor, the carbon dioxide sensor 26 is a MH-Z16 carbon dioxide sensor, the relay 28 is an HH52P11 relay, and the relay 28 is a normally open relay, which can more accurately measure the temperature, humidity, and carbon dioxide concentration data in the plant factory 23, control a high-power device to operate using the relay 28, control a high power by a weak power, and are convenient and simple to use and safer.

Preferably, the liquid crystal display module 34 is an HTG12848A liquid crystal display, and can display the data of the measured temperature, humidity and carbon dioxide concentration in real time, so that the data can be conveniently checked by the staff.

Preferably, the key input module 35 is an independent keyboard for performing control operation, and includes a K1 key 36, a K2 key 37, and a K3 key 38, and the K1 key 36, the K2 key 37, and the K3 key 38 respectively correspond to an I/O port pin of an STC89C52RC single chip microcomputer, and are respectively a set key, an add key, and a subtract key in turn, and the key input module 35 is an independent keyboard for performing control operation, so that the operation is simpler, the upper and lower limits of temperature and humidity and the lower limit of carbon dioxide concentration can be respectively set through the K1 key 36, and the addition and subtraction operations can be respectively performed on the limit values through the K2 key 37 and the K3 key 38.

The working principle is as follows: when the work begins, the staff draws the handle 7 earlier and plants the second with the second and plant frame 2 and the third kind and plant frame 3 and draw to same horizontal position on through the digging arm 5, turn over branch 11 through bull stick 10 this moment, plant frame 2 up pull-up with the second again, plant the top of branch 11 and the recess 14 butt of frame 2 bottom is planted to the second, realize that the second is planted stretching and fixed of frame 2, because fungus plant growth does not need illumination, can plant fungus class plant in planting basket 8 in frame 3 is planted to the third, plant vegetables in planting basket 8 in frame 2 and the first planting frame 1 is planted to the second, fungus class plant the growth and can produce the required carbon dioxide of vegetables photosynthesis, after planting, plant frame 2 and receive through digging arm 5 again, reduce occupation space.

The distribution box 21 provides electric energy for the electric appliance of the device, when supplying water for the plant growing frame, the constant-pressure variable-frequency water pump 18 supplies purified water to the customized cotton 12 in the topmost first planting frame 1 through the water guide pipe 22 to provide water, as the water through holes 13 at the top are communicated with the planting baskets 8 at the bottom through the water guide pipes 22, the water can be comprehensively supplied to the first planting frame 1, the second planting frame 2 and the third planting frame 3, then the sub-liquid pool 16 collects the wastewater on the third planting frame 3 through the water guide pipe 22, then a large amount of micro particles dispersed in the water body are flocculated through the catalytic electrolyzer 17, pretreating the wastewater, further purifying the wastewater by a water purifier 20, finally collecting the purified water after treatment by a mother liquor pool 19, and the purified water is supplied to the plant growth frame through the water guide pipe 22 by the constant-pressure variable-frequency water pump 18, thereby realizing the cyclic utilization of the water.

When illumination, moisture and nutrition are supplied to the vegetables, the brightness of the LED lamp 40 and the illumination period of the LED lamp 40 can be adjusted according to the growth period of the vegetables, the moisture supply period and the moisture supply amount of the constant-pressure variable-frequency water pump 18 can be adjusted according to the growth period of the vegetables, the nutrient solution supply period and the nutrient solution supply amount of the infusion pump 41 can be adjusted according to the growth period of the vegetables, and the illumination, moisture and nutrition required by each growth period of the vegetables can be supplied.

When the environment in the plant factory 23 is regulated, the worker modifies the upper and lower limit values of the temperature and humidity and the lower limit value of the carbon dioxide concentration through the key input module 35, and specifically, the worker presses the key 36 of K1 for the first time to enter the setting of the upper limit temperature and presses the setting of the lower limit temperature for the second time; pressing the upper limit of the entering humidity, and pressing the key again to enter the lower limit of the humidity; then according to the lower limit setting of the concentration of the entering carbon dioxide, only extracting after being pressed again; during modification, the K2 button 37 and the K3 button 38 are pressed to perform addition and subtraction operations on the limit values respectively, after the setting is completed, the temperature, humidity and carbon dioxide concentration data in the plant 23 are detected in real time through the temperature sensor 24, the humidity sensor 25 and the carbon dioxide sensor 26, and the detected temperature, humidity and carbon dioxide concentration signals are sent to the first controller 27, then the first controller 27 sends the received signals to the liquid crystal display module 34, the liquid crystal display module 34 displays the received signals in three rows in real time, wherein the first row is temperature data, the second row is humidity data, and the third row is carbon dioxide concentration data, the first controller 27 compares the measured temperature, humidity and carbon dioxide concentration data with the set temperature, humidity and carbon dioxide concentration data, and when the measured temperature is higher than the set upper limit temperature, when the relay 28 connected with the air conditioner 30 in series is electrified to be attracted, the air conditioner 30 is electrified to carry out cooling work, and when the temperature is reduced to be within a set range, the relay 28 is in a normally open state to stop the cooling work; when the measured temperature is lower than the set temperature lower limit, the relay 28 connected with the boiler 29 in series is powered on when the current passes through the relay 28 to be attracted, the boiler 29 is powered on to carry out heating operation, and when the temperature rises to be within the set range, the relay 28 is in a normally open state to stop the heating operation; when the measured humidity is higher than the set humidity upper limit, the relay 28 connected with the dryer 32 in series has current to attract, the dryer 32 is electrified to carry out dehumidification, and when the humidity is reduced to be within the set range, the relay 28 is in a normally open state to stop the dehumidification; when the measured humidity is lower than the lower limit of the set humidity, the relay 28 connected with the sprayer 31 in series has current to attract, the sprayer 31 is electrified to carry out humidification work, and when the humidity rises to be within the set range, the relay 28 is in a normally open state to stop the humidification work; when the measured carbon dioxide concentration is lower than the set lower limit carbon dioxide concentration, the relay 28 connected with the FFU fan filter unit 33 in series is electrified to be attracted, outside air is filtered and then sucked into the plant factory 23 to supply carbon dioxide required by photosynthesis of vegetables, when the carbon dioxide concentration rises to the set range, the relay 28 is in a normally open state, and the FFU fan filter unit 33 stops working to meet the temperature, humidity and carbon dioxide concentration required by each growth period of the vegetables.

The foregoing merely represents preferred embodiments of the invention, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. Plant factory vegetable planting system, its characterized in that: comprises a plant factory (23), four plant growing frames, a water circulation system, a plant lighting system, a temperature and humidity control system, a gas circulation system, a nutrient solution supply system, a liquid crystal display module (34) and a key input module (35);

plant growth frame includes four support columns (4), install three-layer evenly distributed's first planting frame (1) between support column (4), just first planting frame (1) and support column (4) welding, the bottom first the second is installed and is planted frame (2) in the bottom of first planting frame (1), the third is installed to the bottom that the frame (2) was planted to the second and is planted frame (3), just the third kind is planted frame (3) and support column (4) welding, a plurality of field planting baskets (8) are all installed to the inside of first planting frame (1), second planting frame (2) and third kind planting frame (3), the internally mounted of field planting basket (8) has customized cotton (12), just customized cotton (12) embedding sets up in the inside of basket (8), be equipped with limbers (13) between field planting basket (8), first planting frame (1), The bottom edges of the second planting frame (2) and the third planting frame (3) are respectively provided with a water through hole (13), the water through holes (13) on the planting basket (8) are symmetrically distributed about the center of the planting basket (8), the bottoms of the first planting frame (1), the second planting frame (2) and the third planting frame (3) are respectively provided with a groove (14), the two sides of the second planting frame (2) and the third planting frame (3) are respectively provided with a movable bolt (6), a movable arm (5) is arranged between the second planting frame (2) and the third planting frame (3), the movable arm (5) is connected with the second planting frame (2) and the third planting frame (3) through the movable bolt (6), the two sides of the top of the third planting frame (3) are respectively provided with a connecting plate (9), and the connecting plate (9) is welded with the third planting frame (3), rotating rods (10) are arranged between the connecting plates (9), the rotating rods (10) penetrate through the center of the connecting plates (9) and are in clearance fit with the connecting plates (9), supporting rods (11) are arranged at two ends of the tops of the rotating rods (10), one ends of the supporting rods (11) are welded with the rotating rods (10), the other ends of the supporting rods are abutted to grooves (14) in the bottoms of the second planting frames (2), a handle (7) is arranged on one side of each second planting frame (2), and the handle (7) is fixedly connected with the second planting frames (2) through screws;

the water circulating system comprises a constant-pressure variable-frequency water pump (18) and a water guide pipe (22), the constant-pressure variable-frequency water pump (18) is conducted through the water guide pipe (22) with a first planting frame (1) on the topmost layer, the limbers (13) at the bottom edge of the planting frame are conducted through the water guide pipe (22) between field planting baskets (8) corresponding to the planting frame adjacent to the bottom, a sub-liquid pool (16) is installed at the bottom of the third planting frame (3), the sub-liquid pool (16) and the third planting frame (3) are conducted through the water guide pipe (22) between the limbers (13) at the bottom, a catalytic electrolyzer (17) is installed inside the sub-liquid pool (16), a mother liquid pool (19) is installed on one side of the constant-pressure variable-frequency water pump (18), the constant-pressure variable-frequency water pump (18) and the mother liquid pool (19) are conducted through the water guide pipe (22), and a water purifier (20) is installed on one side of, just all switch on through aqueduct (22) between water purifier (20) and mother liquor pond (19) and son liquid pond (16), the side-mounting of the aqueduct (22) of son liquid pond (16) one side has solenoid valve (15), block terminal (21) are installed at the top of constant voltage variable frequency water pump (18), just catalytic electrolysis ware (17), solenoid valve (15) and constant voltage variable frequency water pump (18) all with block terminal (21) electric connection.

2. The plant factory vegetable planting system of claim 1, wherein: the plant lighting system comprises a plurality of LED lamps (40) and a second controller (39), and the second controller (39) is electrically connected with the LED lamps (40);

the temperature and humidity control system comprises a temperature sensor (24), a humidity sensor (25), a first controller (27), a heating boiler (29), an air conditioner (30), a sprayer (31), a dryer (32) and four relays (28) which are respectively connected with the heating boiler (29), the air conditioner (30), the sprayer (31) and the dryer (32) in series;

the gas circulation system comprises a carbon dioxide sensor (26), a first controller (27), a relay (28) and an FFU fan filter unit (33), and the relay (28) and the FFU fan filter unit (33) are connected in series;

the nutrient solution supply system comprises a nutrient solution tank (42), an infusion pump (41) and a second controller (39), and the infusion pump (41) is electrically connected with the second controller (39).

3. The plant factory vegetable planting system of claim 2, wherein: the first controller (27) is an STC89C52RC single chip microcomputer, and the second controller (39) is an S7-200 PLC.

4. The plant factory vegetable planting system of claim 2, wherein: the temperature sensor (24) is a YX-WD temperature sensor, the humidity sensor (25) is a VP-4 humidity sensor, the carbon dioxide sensor (26) is a MH-Z16 carbon dioxide sensor, the relay (28) is an HH52P11 relay, and the relay (28) is a normally open relay.

5. The plant factory vegetable planting system of claim 1, wherein: the liquid crystal display module (34) is an HTG12848A liquid crystal display screen.

6. The plant factory vegetable planting system of claim 1, wherein: the key input module (35) is an independent keyboard for control operation, and comprises a K1 key (36), a K2 key (37) and a K3 key (38), wherein the K1 key (36), the K2 key (37) and the K3 key (38) respectively correspond to an I/O port pin of an STC89C52RC singlechip and are a setting key, an adding key and a subtracting key in sequence.