CN108575725B

CN108575725B - Indoor plant factory system

Info

Publication number: CN108575725B
Application number: CN201810588113.6A
Authority: CN
Inventors: 李霞; 蔡永伟; 赵劲来
Original assignee: Liuhefeng (tianjin) Science And Technology Co Ltd
Current assignee: Liuhefeng (tianjin) Science And Technology Co Ltd
Priority date: 2018-06-08
Filing date: 2018-06-08
Publication date: 2020-03-10
Anticipated expiration: 2038-06-08
Also published as: CN108575725A

Abstract

The invention provides an indoor plant factory system, which comprises a planting room, a nutrient solution chamber and a control system, wherein the nutrient solution chamber is arranged in the planting room; the planting room comprises a seeding room, a seedling raising room, a cultivation room, a harvesting room and a cleaning room and is a planting place of plants; the nutrient solution chamber is provided with a mother solution tank, a nutrient solution tank and a matched water supply and drainage system, and is a place for preparing and controlling the nutrient solution; the control system comprises an HVAC control system, a nutrient solution control system and an LED growth lamp lighting system and is used for monitoring and regulating and controlling environmental parameters inside the plant factory and a nutrient solution system. The invention has high automation degree. The loading and unloading device and the cultivation tank conveying equipment are matched, so that the labor is saved. Nutrient solution, environment humiture, LED light filling, CO2 gas fertilizer etc. high automatic control, saved the manpower, also avoided the error that manual operation brought, space utilization is high, plants the row spacing and can adjust along with the growth of vegetables, compares in conventional planting mode, can increase 50% unit area planting volume.

Description

Indoor plant factory system

Technical Field

The invention belongs to the technical field of water culture devices, and particularly relates to an indoor plant factory system.

Background

With the development of urbanization, the usable cultivated land area of China is reduced year by year. Meanwhile, the traditional agriculture has hard working conditions and low input-output rate, cannot attract the addition of young people, and has serious aging of the agricultural population. Traditional agriculture faces serious challenges.

In the indoor plant factory which has emerged in recent years, the soilless culture technology is adopted, the restriction of cultivated land is avoided, and the vegetable planting in urban high-rise buildings and even gobi deserts can be realized. Meanwhile, the plant factory has high manual control degree and relatively comfortable production environment, avoids heavy physical labor such as land preparation, weeding, pesticide spraying, watering and the like in the traditional agriculture, has greater attraction to young people, and is beneficial to the sustainable development of agriculture. Most importantly, air, water and fertilizer in a plant factory are all manually controlled, the trouble of air pollution and plant diseases and insect pests is avoided, and the produced vegetables do not contain pesticides and heavy metals, and are green and safe.

Present indoor plant factory adopts the planting board mode more, puts a plurality of planting boards in proper order promptly on planting the bed, has dug multiseriate planting hole on planting the board, and the vegetables field planting is on planting the hole. In the planting mode, the distance between planting holes is fixed, and the hole pitch or the row pitch cannot be changed along with the growth of vegetables. This virtually reduces the space utilization and thus the unit yield. Moreover, most plant factories are low in automation degree, and the planting equipment is carried by manpower.

Disclosure of Invention

Accordingly, the present invention is directed to an indoor plant factory system, which solves the above-mentioned problems.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

an indoor plant factory system comprises a planting room, a nutrient solution chamber and a control system; wherein

The planting room comprises a seeding room, a seedling raising room, a cultivation room, a harvesting room and a cleaning room and is used for completing the periodic growth of plants;

a nutrient solution mother liquor tank, an RO water tank, a nutrient solution tank and a matched liquid supply device are arranged in the nutrient solution chamber and are used for configuring and regulating nutrient solution;

the control system comprises an HVAC control system, a nutrient solution control system and an LED growth lamp lighting system and is used for detecting and controlling the environment inside a factory and in a planting room and controlling the circulation and the allocation of nutrient solution.

Further, a seeding table and a germination accelerating frame are placed in the seeding chamber, the seeding table is used for seeding, seedling raising substrates, seedling raising trays and seeding tools are placed on the seeding table, and the germination accelerating frame is used for placing the seedling raising trays after seeding and is a multilayer metal frame.

Further, seedling raising frames are placed in the seedling raising chamber, the seedling raising frames are multi-layer, a seedling raising bed is placed on each layer of seedling raising frame, a seedling raising tray is placed on each seedling raising bed, a water outlet is formed in one side of each seedling raising bed, a sewer pipe sleeve is installed on each water outlet, an overflow opening is formed in the top of each sewer pipe sleeve, a water outlet is formed in the base of each sewer pipe sleeve, and the opening of each overflow opening is larger than the opening of each water outlet;

the nutrient solution box of nursery cabinet is placed in the nutrient solution indoor, and the one-level inlet channel stretches out from the nutrient solution incasement, and one leads directly to on the nursery cabinet, and then divide the second grade inlet tube at each layer of nursery cabinet, hangs in nursery bed upper portion, and manual ball valve is equipped with to the second grade inlet tube end, and the last sewer pipe cover of nursery bed links to each other with the wet return, and the wet return extends to the nutrient solution incasement of nutrient solution room always, and wherein nutrient solution flows out from the nutrient solution incasement, and in the nursery bed was educated in the inlet fluid pipeline inflow, the sewer pipe that again followed on the nursery bed converged the wet return, flows back to the nutrient solution box along the wet return.

Furthermore, a layer of stainless steel reflector is fixed on each layer of seedling bed, the LED lamps are arranged on the reflector, and the LED lamps are in a group and are switched on and off in a unified mode and the light density is adjusted.

Further, a cultivation frame and conveying equipment are placed in the cultivation room;

the cultivation rack is provided with an upper water tank and a return water tank, a plurality of cultivation tanks are clamped between the upper water tank and the return water tank and can transversely move along the two tanks, each layer is divided into a plurality of areas according to different intervals of the cultivation tanks, the intervals of the plurality of areas are gradually increased, a belt conveyor is arranged between the cultivation tanks and the cultivation rack and used for conveying the cultivation tanks from a loading end to an unloading end, and the loading end and the unloading end of the cultivation rack are respectively provided with a lifting translation machine used for loading or unloading the cultivation tanks;

the nutrient solution case of cultivation frame is placed in the nutrient solution indoor, the water main stretches out from the nutrient solution incasement, lead to on the cultivation frame, and then divide out the second grade water-feeding pipeline at cultivation frame each layer, the tertiary water-feeding pipeline is further distinguished out at each to the second grade water-feeding pipeline again, divide a plurality of last stage water inlet hose on the tertiary water-feeding pipeline, water inlet hose stretches into in the water-feeding groove, hang in the inlet opening top of cultivation groove, send into the cultivation groove with the nutrient solution, the cultivation groove is equipped with 2.5% inclination, the nutrient solution flows to the other end from cultivation groove one end, and flow from the apopore and converge into the return flume, flow into the return flume through the sewer hole on the return flume, finally flow back to the nutrient solution case.

Further, transfer apparatus includes material loading machine, blanking machine, belt conveyer to and the control system of control material loading machine, blanking machine and belt conveyer work, the material loading machine is placed in the both ends of cultivation frame, and belt conveyer places on every layer of cultivation frame, and each is controlled every district on every layer, and parallel placement is controlled to every group belt conveyer, drives the operation by a driving motor through the universal driving shaft, and belt conveyer includes frame, guide rail, conveyer, and the equidistance installs limit baffle on the belt, and the cultivation groove is placed between limit baffle.

Further, the material loading machine comprises a lifting guide rail, a lifting cylinder, a lifting table and an object carrying table, wherein the object carrying table is installed on the lifting table and comprises an object carrying plate, a chassis, a jacking small cylinder and a translation small cylinder, a limiting pin shaft is fixed on the chassis, the object carrying plate extends upwards from the limiting pin shaft, and the cultivation groove is placed between the limiting pin shafts on the object carrying plate.

Further, the blanking machine is the same as the feeding machine in structure, and the installation direction of the small translation cylinder is opposite to that of the feeding machine.

Furthermore, the nutrient solution chamber comprises an RO water tank, a mother solution A tank, a mother solution B tank, an acid solution tank, a culture area nutrient solution tank and a seedling culture area nutrient solution tank, the RO water tank is connected with a first water pipe, the first water pipe is connected with a centrifugal pump and a filter, the first water pipe is divided into two paths through the centrifugal pump and the filter, one path is connected with the culture area nutrient solution tank, the other path is connected with the seedling culture area nutrient solution tank, the mother solution A tank is connected with a second water pipe, the second water pipe is connected with a dosing metering pump and the filter, the second water pipe is divided into two paths through the dosing metering pump and the filter, one path is connected with the culture area nutrient solution tank through an electromagnetic valve, and the other path is connected; the mother solution tank B is connected with a third water pipe, the third water pipe is connected with a dosing metering pump and a filter, the third water pipe is divided into two paths through the dosing metering pump and the filter, one path is connected to a branch path of the nutrient solution tank of the cultivation area through an electromagnetic valve, and the other path is connected to a branch path of the nutrient solution tank of the seedling growing area through an electromagnetic valve; the acid liquor tank is connected with a fourth water pipe, the fourth water pipe is connected with a dosing metering pump and a filter, the fourth water pipe is divided into two paths through the dosing metering pump and the filter, one path is connected to a branch path of the nutrient solution tank of the cultivation area through an electromagnetic valve, and the other path is connected to a branch path of the nutrient solution tank of the seedling growing area through an electromagnetic valve; the liquid outlet end of the culture area nutrient liquid tank is directly connected with the culture area water supply pipe, and the liquid outlet end of the seedling area nutrient liquid tank is directly connected with the seedling area water supply pipe; the upper water pipe is also provided with a liquid supply variable frequency pump; the cultivation area nutrient solution tank is further connected with a cultivation area water return pipe, and the seedling area nutrient solution tank is further connected with a seedling area water return pipe.

Furthermore, the HVAC system controls the air temperature and humidity, the air pressure difference, the air supply quantity, the concentration of CO2 and the concentration of O3 in a factory, the nutrient solution control system controls the circulation and the allocation of nutrient solution, the LED lamp illumination system controls the on-off and the optical density of the LED growth lamp, wherein a series of sensors of a PAR sensor, a temperature and humidity sensor, a CO2 concentration sensor, an O3 concentration sensor, a liquid PH value sensor and a liquid EC value sensor detect environmental signals and transmit the environmental signals to the central processing unit, and the central processing unit performs calculation and analysis to act on functional elements of an electromagnetic valve, a humidifier, a warmer, a refrigerator and a water pump, so as to detect and control the internal environment of the plant factory.

Compared with the prior art, the indoor plant factory system has the following advantages:

(1) the invention has high automation degree. The loading and unloading device and the cultivation tank conveying equipment are matched, so that the labor is saved. The nutrient solution, the environment temperature and humidity, the LED light supplement, the CO2 gas fertilizer and the like are automatically controlled in height, so that the labor is saved, and the error caused by manual operation is avoided

(2) The invention has high space utilization rate. The planting row spacing can be adjusted along with the growth of the vegetables, and compared with a conventional planting mode, the planting quantity per unit area can be increased by 50%;

(3) the nutrient solution is recycled, so that water resources are saved, and the environment is protected;

(4) the invention has simple structure, low cost and no pollution.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic plan view of a planting space according to an embodiment of the present invention;

FIG. 2 is a schematic view of a nutrient compartment according to an embodiment of the present invention;

FIG. 3 is a schematic view of a nursery cabinet according to an embodiment of the present invention

FIG. 4 is a schematic view of a planting frame according to an embodiment of the present invention

FIG. 5 is a schematic diagram of a transfer apparatus according to an embodiment of the present invention

Fig. 6 is a schematic view of a feeding machine according to an embodiment of the present invention.

Description of reference numerals:

1-seeding room, 2-seedling room, 3-cultivation room, 4-harvesting room, 5-cleaning room and 6-nutrient solution room;

2-1-seedling raising frame, 2-2-seedling raising bed, 2-3-seedling raising tray, 2-4-sewer pipe sleeve, 2-4-1-overflow port, 2-4-2-water outlet, 2-5-LED lamp, 2-6-manual ball valve and 2-7-water return pipe;

3-1-cultivation shelf, 3-2-water feeding trough, 3-3-water returning trough, 3-4-cultivation trough, 3-5-feeding machine, 3-6-discharging machine, 3-7-belt conveyor, 3-8-LED lamp, 3-9-water feeding pipe, 3-10-water returning pipe, and 3-11-final stage water inlet hose;

3-5-1-lifting guide rail, 3-5-2-lifting cylinder, 3-5-3-objective table, 3-5-4-lifting table, 3-5-3-1-objective table chassis, 3-5-3-2-objective plate, 3-5-3-3-jacking small cylinder, 3-5-3-4-translation small cylinder and 3-5-3-5-limiting pin shaft;

3-7-1-a driving motor, 3-7-2-a universal driving shaft, 3-7-3-a limiting baffle, 3-7-4-a guide rail and 3-7-5-a conveying belt;

6-1-RO water tank, 6-2-mother liquor A tank, 6-3-mother liquor B tank, 6-4-acid liquor tank, 6-5-cultivation area nutrient liquor tank, 6-6-seedling growing area nutrient liquor tank, 6-7-dosing metering pump, 6-8-liquid supply variable frequency pump, 6-9-filter, 6-10-electromagnetic valve, 6-11-cultivation area water feeding pipe, 6-12-seedling growing area water feeding pipe, 6-13-cultivation area water return pipe and 6-14-seedling growing area water return pipe.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The invention comprises a planting room, a nutrient solution chamber and a control system. The planting room is a hundred thousand grade clean room and is divided into a seeding room 1, a seedling raising room 2, a cultivation room 3, a harvesting room 4 and a cleaning room 5, as shown in figure 1, a nutrient solution room 6 is a common room, and a nutrient solution mother solution tank 62, an RO water tank 61, a nutrient solution box and a matched liquid supply device, such as a dosing pump, a liquid supply pump, a filter and the like, are arranged in the nutrient solution room. Nutrient compartment 6 is the location where the nutrient is formulated and regulated. The nutrient chamber 6 is constructed as shown in fig. 2.

The nutrient solution chamber 6 comprises an RO water tank 61, a mother solution A tank 62, a mother solution B tank 63, an acid solution tank 64, a culture area nutrient solution tank 65 and a seedling area nutrient solution tank 66, wherein the RO water tank 61 is connected with a first water pipe which is connected with a centrifugal pump and a filter 69, the first water pipe is divided into two paths through a dosing metering pump 67 and the filter 69, one path is connected with the culture area nutrient solution tank 65, the other path is connected with the seedling area nutrient solution tank 66, the mother solution A tank 62 is connected with a second water pipe which is connected with the dosing metering pump 67 and the filter 69, the second water pipe is divided into two paths through the dosing metering pump 67 and the filter 69, one path is connected with the culture area nutrient solution tank 65 through an electromagnetic valve 610, and the other path is connected with the seedling area; the mother liquor B tank 63 is connected with a third water pipe, the third water pipe is connected with a dosing metering pump 67 and a filter 69, the third water pipe is divided into two paths through the dosing metering pump 67 and the filter 69, one path is connected to a branch path of the nutrient solution tank 65 in the cultivation area through an electromagnetic valve 610, and the other path is connected to a branch path of the nutrient solution tank 66 in the seedling growing area through an electromagnetic valve 610; the acid liquid tank 64 is connected with a fourth water pipe, the fourth water pipe is connected with a dosing metering pump 67 and a filter 69, the fourth water pipe is divided into two paths through the dosing metering pump 67 and the filter 69, one path is connected to a branch path of the nutrient liquid tank 65 in the cultivation area through an electromagnetic valve 610, and the other path is connected to a branch path of the nutrient liquid tank 66 in the seedling growing area through an electromagnetic valve 610; the liquid outlet end of the cultivation area nutrient solution tank 65 is connected with a cultivation area water supply pipe 611, and the liquid outlet end of the seedling cultivation area nutrient solution tank 66 is connected with a seedling cultivation area water supply pipe 612; a liquid supply variable frequency pump 68 is also arranged on the upper water pipe; the cultivation area nutrient solution tank 65 is also connected with a cultivation area water return pipe 613, and the seedling raising area nutrient solution tank 66 is also connected with a seedling raising area water return pipe 614.

Wherein the wall body in the factory is a rock wool sandwich color steel plate with the thickness of 50 mm; the air filtration is primary and intermediate effect filtration; an air-cooled water chilling unit is adopted for cooling and dehumidifying, an electric heater is adjusted steplessly for heating, and an electrode humidifier is used for humidifying to ensure that the temperature fluctuation value is +/-1 ℃ and the humidity fluctuation value is +/-5%; the airflow organization mode is side air supply and side air return, and the air flow rate of the leaf surface is ensured to be 0.3-0.5 m/s. In addition, a CO2 air inlet and an O3 air inlet are arranged at the negative pressure area of the air duct, so that CO2 and O3 are uniformly dispersed in the cultivation room.

A seeding table and a germination accelerating frame are arranged in the seeding room 1. The seeding table is a field for seeding, and a seedling substrate, a seedling tray, a seeding tool and the like are placed on the seeding table. The vernalization frame is multilayer metal frame, and the layer height is less, does not install the LED lamp for place the seedling tray of having sowed the kind. The sowing room is in a constant temperature and humidity environment.

When the device works, a seedling substrate (sponge or rock wool) is soaked in RO water and is placed in a seedling tray after being full of water. Then, the screened seeds are sown on a seedling raising substrate, and manual sowing or small-sized water planting sowing machines can be used for sowing. After the seeds are sowed, spraying a little RO water on the surface of the substrate to play the roles of wetting and fixing the seeds. And then placing the seedling-raising plate on a germination accelerating frame for accelerating germination. In the process of accelerating germination, the seeds are guaranteed to be wet and prevented from being dry.

A seedling raising frame 21 is placed in the seedling raising room 2. The seedling raising frame 21 is of a multilayer structure and is assembled by aluminum alloy pipes. A seedling bed 22 is arranged on the seedling bed, and a seedling tray 23 is arranged in the seedling bed 22. A layer of stainless steel reflector is fixed on each layer of the seedling raising frame bed 22, and the LED lamps 25 are arranged on the reflectors. A plurality of LED lamps 25 are grouped together to uniformly switch and adjust the light intensity. One side of the seedling bed 22 is provided with a drainage port, a drainage pipe sleeve 24 is arranged on the drainage port, the top of the drainage pipe sleeve 24 is provided with an overflow 241 port, and the base is provided with a drainage port 242. The overflow 241 is opened wide for controlling the water level; the drain 242 has a small opening and a drain rate less than the water inlet rate for draining accumulated water from the bed after the liquid supply is stopped. The structure of the seedling rack 21 is shown in FIG. 3.

The nutrient solution tank of the seedling rack 21 is placed in the nutrient solution chamber 6. The first-level water inlet pipeline extends out of the nutrient solution box, and the first-level water inlet pipeline is directly communicated to the seedling raising frame 21, and then a second-level water inlet pipe is divided from each layer of the seedling raising frame 21 and hung on the upper portion of the seedling raising bed 22. The tail end of the secondary water inlet pipe is provided with a manual ball valve 26 for adjusting the water inflow. The sewer pipe sleeve 24 on the seedling bed 22 is connected with a water return pipe 27, and the water return pipe 27 extends into a nutrient solution box of the nutrient solution chamber 6. Nutrient solution flows out from the nutrient solution box, flows into the seedling bed 22 through a liquid inlet pipeline, then is gathered into the water return pipe 27 from the sewer pipe sleeve 24 on the seedling bed 22, and finally flows back to the nutrient solution box along the water return pipe 27. The whole nutrient solution system does not need to use an electromagnetic valve, has a simple structure, saves cost and is convenient for layered control.

In the working process, after the seeds in the germination accelerating room take roots and leave leaves (cotyledons), the seedling culture disc 23 needs to be transferred into the seedling culture room 2 in time to prevent the seedlings from growing excessively. The seedling-raising trays 23 are sequentially placed on the seedling-raising bed 22, the upper part is irradiated by the LED lamp 25 and the lower part is supplied with nutrient solution. The upper LED lamp 25 can adjust the light density according to the requirement. The nutrient solution at the lower part adjusts the water content and the nutrient supply of the seedling substrate by controlling the liquid supply time. The photoperiod of the seedling raising room is 16h/8 h.

The cultivation room 3 houses a cultivation shelf 31 and a transfer device. The cultivation frame 31 has a multi-layer structure and is assembled by aluminum alloy pipes. The upper surface is provided with an upper water tank 32 and a return water tank 33, and a plurality of cultivation tanks 34 are clamped between the upper water tank 32 and the return water tank 33 and can move transversely along the two tanks, so that the distance between the cultivation tanks can be changed. According to the difference of the spacing of the cultivation grooves 34, each layer is divided into 3 areas, and the groove spacing of the 3 areas is gradually increased. For example, the distance between the I area and the II area is 10cm, the distance between the II area and the III area is 15cm, and the distance between the III area and the III area is 25 cm. In the space between the cultivation tank 34 and the cultivation shelf 31, a belt conveyor 37 is installed for transporting the cultivation tank 34 from the loading end to the unloading end. The loading end and the unloading end of the cultivation shelf 31 are respectively provided with a lifting translation machine for loading or unloading the cultivation tank. A layer of stainless steel reflector is fixed on each layer of cultivation frame 31, and the LED lamps are arranged on the reflectors. The structure of the cultivation frame is shown in figure 4.

The nutrient solution tank of the cultivation shelf 31 is placed in the nutrient solution chamber. Go up the water pipe 39 and stretch out from the nutrient solution incasement, lead to on the cultivation frame 31, and then divide out the second grade water feeding pipeline at cultivation frame 31 each layer, the tertiary water feeding pipeline of further distinguishing respectively again of second grade water feeding pipeline, divide a plurality of final stage water inlet hose 311 on the tertiary water feeding pipeline, water inlet hose 311 stretches into in the water feeding tank 32, hangs in the inlet opening top of cultivation groove 34, sends into cultivation groove 34 with the nutrient solution. The cultivation tank 34 has an inclination angle of 2.5%, and the nutrient solution flows from one end of the cultivation tank 34 to the other end under the action of gravity, flows out of the water outlet hole and is converged into the water return tank. Flows into the return pipe 310 through a lower water hole on the return tank and finally flows back to the nutrient solution tank.

The conveying device of the cultivation room comprises a feeding machine 35, a blanking machine 36, a belt conveyor 37 and a matched control system. The feeding and discharging machines are respectively arranged at two ends of the cultivation frame 31. The belt conveyer 37 is placed on each layer of the cultivation shelf 31, one for each layer of each area, and 6 for each layer. The transfer apparatus structure is shown in fig. 5.

The feeder 35 includes a lifting guide 351, a lifting cylinder 352, a lifting table 354, a stage 353, a photoelectric sensor switch, and the like. The stage 353 is mounted on the lift platform 354, and includes a stage plate 3532, a base plate 3531, a lift cylinder 3533, a translation cylinder 3534, and the like. A limiting pin shaft 3535 is fixed on the chassis 3531, and a carrying plate 3532 extends upwards from the limiting pin shaft 3535. The cultivation groove 34 is placed between the limit pin shafts 3535 on the carrying plate 3532. The spacing of the limiting pin shaft 3535 is consistent with the spacing of the limiting baffle 373 of the conveyor in the I area. The feeder structure is shown in fig. 6.

Each layer of cultivation frame 31 is provided with 6 belt conveyors 37, and every two belt conveyors are in a group and are distributed in three cultivation areas in a staggered manner. Each group of belt conveyors 37 is arranged in parallel left and right and is driven by a driving motor 371 to operate through a linkage shaft 372. The belt conveyor 37 includes a frame, a guide rail 374, a conveyor belt 375, and the like. The conveyor belt 375 is provided with limit baffles 373 at equal intervals, and the cultivation troughs 34 are placed between the limit baffles 373. The limit baffle 373 is a metal sheet, is 1-2cm high, and is fixed on the conveyor belt 375. The spacing between the three sets of conveyor limiting baffles 375 increases progressively and corresponds to the planting spacing in the planting area.

The blanking machine 36 is constructed the same as the loading machine 35 except that the mounting direction of the small translation cylinder is reversed.

When the seedling planting machine works, after the seedlings in the seedling raising room 2 grow to a certain size, the seedlings are moved out of the seedling raising plate 23 and are planted on the cultivation grooves 34. A plurality of groups of planting grooves 34 are placed between the limiting pin shafts 3535 of the loading plate of the loading machine. Subsequently, the elevating platform 354 is driven by the elevating cylinder 352 to vertically move between the respective floors along the elevating guide 351, and when the elevating platform reaches the target floor height, the sensing switch mounted on the cultivation shelf 31 is turned on, and the elevating platform 354 stops. A small jacking cylinder 3533 below a loading plate 3533 of the loading table jacks the loading plate 3532 for a certain distance, so that a limiting pin shaft 3535 fixed on a chassis 3531 is separated from the loading plate 3532, and the loading plate 3532 can move horizontally conveniently; then a small translation cylinder 3534 extends forwards, and the loading plate 3532 is translated forwards to the loading area of the belt conveyor 37 in the area I; the small jacking air cylinder 3533 descends to the 1 st gear, and the cultivation trough 34 on the carrying plate 3532 is loaded on the conveying belt; subsequently, the small air cylinder 3534 is translated and retracted, and the empty carrier plate 3532 is pulled back to the initial horizontal position; finally, the small jacking cylinder 3533 descends to the 2 nd gear, so that the loading plate 3532 descends to the initial vertical position. By this, the single loading action of the loader 35 is finished. The height difference between the 1 st gear and the 2 nd gear of the small lifting cylinder is about 5cm, and the small lifting cylinder is mainly used for ensuring the smooth reset of the loading plate in the horizontal and vertical directions. When the height of the gear 1 is higher, the carrying plate 3532 is higher than the limit pin shaft 3535, and the carrying plate 3532 can be smoothly reset in the horizontal direction; when the height of the carrier plate 3532 is 2 grades, the carrier plate 3532 is lower than the limit pin shaft 3535, and the pin shaft penetrates through the carrier plate 3532 and is exposed on the plate surface, so that the carrier plate 3532 is reset in the vertical direction.

After the feeding machine 35 loads a group of cultivation grooves 34 on the belt conveyor 37 in the area I, the photoelectric sensor in the loading area in the area I senses the groove body, the control system starts the motor to drive the belt to move forwards, the cultivation grooves 34 are moved out of the sensing area, and the vacant belt moves to the sensing area. At this point, the photosensor will transmit a vacancy signal to the control system, which will restart the loading process until the zone I conveyor is fully loaded. The entire loading process of the I-zone ends.

Along with the growth of vegetables, the cultivation groove in area I needs to be moved to area II with larger groove spacing to facilitate the better growth of vegetables. At the moment, the photoelectric sensor in the loading area of the area II senses that the belt is unloaded, and the photoelectric sensor in the unloading area of the area I senses that the belt is fully loaded. Under the condition that the two conditions are met, the control system starts the motors of the areas I and II at the same time, and the cultivation groove 34 is transferred from the area I to the area II under the driving of the belt of the area I and moves forwards along with the belt of the area II. Thus, the I-section cultivation tank 34 is completely transferred to the II-section.

The cultivation tank 34 is transferred from zone II to zone III in a similar manner to zone I to zone II. The unloading process of the growing tank 34 from zone III is similar to the loading process of zone I. The detailed process is not repeated.

A harvesting platform, a packaging platform, a low-temperature storage cabinet and the like are arranged in the harvesting chamber 4.

In operation, after the vegetables are ripe, the vegetables are unloaded from the discharge end of the III area together with the cultivation groove 34, transported to a harvesting chamber and placed on a harvesting platform for harvesting. The harvested vegetables are uniformly packaged on a packaging table and then placed in a storage cabinet for low-temperature storage after being packaged.

The cleaning chamber 5 is internally provided with a cleaning pool, a disinfection pool and a matched cleaning and disinfection tool.

During operation, the collected cultivation tank and the replaced seedling raising tray are conveyed to a cleaning chamber after the waste plant roots and leaves and other obvious impurities are removed, and the plant roots and leaves are placed in a cleaning pool to be cleaned. The cleaning is mainly aimed at the attached impurities on the inner wall of the device, and simultaneously, the obvious stains on the outer surface of the device are also removed. After the cleaning, the cultivation tank 34 or the seedling tray 23 is transferred to a disinfection tank for soaking and disinfection. The disinfection tank is stored with environment-friendly disinfection liquid such as ozone water or sodium hypochlorite water solution. And after the disinfection is finished, taking out the cultivation tank, stacking and airing. After being dried, the fertilizer can be reused for planting.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. An indoor plant factory system, its characterized in that: comprises a planting room, a nutrient solution chamber and a control system; wherein

The planting room comprises a seeding room, a seedling raising room, a cultivation room, a harvesting room and a cleaning room, and is a planting place of plants;

a nutrient solution mother liquor tank, an RO water tank, a nutrient solution tank and a matched liquid supply device are arranged in the nutrient solution chamber, and the nutrient solution tank is a preparation and regulation place of nutrient solution;

the control system comprises an HVAC control system, a nutrient solution control system and an LED growth lamp lighting system and is used for monitoring and regulating environmental parameters inside the plant factory and a nutrient solution system;

a seeding table and a germination accelerating frame are arranged in the seeding chamber, the seeding table is used for seeding, a seedling substrate, a seedling tray and a seeding tool are arranged on the seeding table, and the germination accelerating frame is used for placing the seedling tray after seeding and is a multilayer metal frame; seedling raising frames are placed in the seedling raising chamber, the seedling raising frames are multi-layer, a seedling raising bed is placed on each layer of seedling raising frame, a seedling raising tray is placed on each seedling raising bed, a drainage port is formed in one side of each seedling raising bed, a sewer pipe sleeve is installed on each drainage port, an overflow port is formed in the top of each sewer pipe sleeve, a water outlet is formed in the base of each sewer pipe sleeve, and the opening of each overflow port is larger than the opening of each water outlet;

the nutrient solution box of the seedling raising frame is placed in a nutrient solution chamber, a primary water inlet pipeline extends out of the nutrient solution box, and a primary water inlet pipeline is communicated to the seedling raising frame, so that secondary water inlet pipes are separated from layers of the seedling raising frame and hung on the upper part of a seedling raising bed, a manual ball valve is arranged at the tail end of each secondary water inlet pipe, a sewer pipe sleeve on the seedling raising bed is connected with a water return pipe, the water return pipe extends into the nutrient solution box of the nutrient solution chamber, and nutrient solution flows out of the nutrient solution box, flows into the seedling raising bed through a liquid inlet pipeline, then flows into the water return pipe from a sewer pipe sleeve on the seedling raising bed, and finally flows back to;

a cultivation frame and conveying equipment are placed in the cultivation room;

the nutrient solution box of the cultivation frame is placed in a nutrient solution chamber, the water feeding main pipe extends out of the nutrient solution box and leads to the cultivation frame, and then secondary water feeding pipes are separated from each layer of the cultivation frame, and further tertiary water feeding pipes are separated from each layer of the secondary water feeding pipes, a plurality of last-stage water feeding hoses are separated from the tertiary water feeding pipes, the water feeding hoses extend into the water feeding grooves and are suspended above the water inlet holes of the cultivation grooves, the nutrient solution is fed into the cultivation grooves, the cultivation grooves are provided with 2.5% of inclination angles, the nutrient solution flows from one end to the other end of the cultivation grooves, flows out of the water outlet holes and converges into the water return grooves, flows into the water return pipes through the water outlet holes on the water return grooves and finally flows back to the nutrient solution box;

the conveying equipment comprises a feeding machine, a blanking machine, belt conveyors and a control system for controlling the feeding machine, the blanking machine and the belt conveyors to work, wherein the feeding machine and the blanking machine are arranged at two ends of a cultivation frame, the belt conveyors are arranged on each layer of cultivation frame, one belt conveyor is arranged on each layer of cultivation frame respectively on the left and right of each area, each group of belt conveyors are arranged in parallel on the left and right and are driven to run by a driving motor through a linkage shaft, each belt conveyor comprises a rack, a guide rail and a conveying belt, limit baffles are arranged on the belts at equal intervals, and cultivation grooves are arranged between the limit baffles;

the feeding machine comprises a lifting guide rail, a lifting cylinder, a lifting table and an object stage, the object stage is arranged on the lifting table and comprises an object carrying plate, a chassis, a jacking small cylinder and a translation small cylinder, a limiting pin shaft is fixed on the chassis, the object carrying plate extends upwards from the limiting pin shaft, and the cultivation groove is placed between the limiting pin shafts on the object carrying plate;

the blanking machine is identical to the feeding machine in structure, and the installation direction of the small translation cylinder is opposite to that of the feeding machine.

2. The indoor plant factory system of claim 1, wherein: a layer of stainless steel reflector is fixed on each layer of seedling bed, the LED lamps are arranged on the reflector, and the LED lamps are in a group and are switched on and off in a unified mode and the light density is adjusted.

3. The indoor plant factory system of claim 1, wherein: the nutrient solution chamber comprises an RO water tank, a mother solution A tank, a mother solution B tank, an acid solution tank, a culture area nutrient solution tank and a seedling culture area nutrient solution tank, the RO water tank is connected with a first water pipe, the first water pipe is connected with a centrifugal pump and a filter, the first water pipe is divided into two paths through the centrifugal pump and the filter, one path is connected with the culture area nutrient solution tank, the other path is connected with the seedling culture area nutrient solution tank, the mother solution A tank is connected with a second water pipe, the second water pipe is connected with a dosing metering pump and the filter, the second water pipe is divided into two paths through the dosing metering pump and the filter, one path is connected with the culture area nutrient solution tank through an electromagnetic valve, and the other path; the mother solution tank B is connected with a third water pipe, the third water pipe is connected with a dosing metering pump and a filter, the third water pipe is divided into two paths through the dosing metering pump and the filter, one path is connected to a branch path of the nutrient solution tank of the cultivation area through an electromagnetic valve, and the other path is connected to a branch path of the nutrient solution tank of the seedling growing area through an electromagnetic valve; the acid liquor tank is connected with a fourth water pipe, the fourth water pipe is connected with a dosing metering pump and a filter, the fourth water pipe is divided into two paths through the dosing metering pump and the filter, one path is connected to a branch path of the nutrient solution tank of the cultivation area through an electromagnetic valve, and the other path is connected to a branch path of the nutrient solution tank of the seedling growing area through an electromagnetic valve; the liquid outlet end of the culture area nutrient liquid tank is directly connected with the culture area water supply pipe, and the liquid outlet end of the seedling area nutrient liquid tank is directly connected with the seedling area water supply pipe; the upper water pipe is also provided with a liquid supply variable frequency pump; the cultivation area nutrient solution tank is further connected with a cultivation area water return pipe, and the seedling area nutrient solution tank is further connected with a seedling area water return pipe.

4. The indoor plant factory system of claim 1, wherein: the HVAC system controls the air temperature and humidity, the air pressure difference, the air supply quantity, the CO2 concentration and the O3 concentration in a factory, the nutrient solution control system controls the circulation and the allocation of nutrient solution, the LED lamp illumination system controls the on-off and the optical density of an LED growth lamp, wherein a series of sensors of a PAR sensor, a temperature and humidity sensor, a CO2 concentration sensor, an O3 concentration sensor, a liquid PH value sensor and a liquid EC value sensor detect environmental signals and conduct the environmental signals to a central processing unit, and the central processing unit performs calculation and analysis to act on functional elements of an electromagnetic valve, a humidifier, a warmer, a refrigerator and a water pump so as to detect and control the internal environment of the plant factory.