CN110407325B

CN110407325B - Water cress culture apparatus convenient to harvest plant body fast

Info

Publication number: CN110407325B
Application number: CN201910666494.XA
Authority: CN
Inventors: 柯凡; 刁飞; 李文朝
Original assignee: Nanjing Institute of Geography and Limnology of CAS
Current assignee: Nanjing Institute of Geography and Limnology of CAS
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-08-04
Anticipated expiration: 2039-07-23
Also published as: CN110407325A

Abstract

The invention discloses a cress culture device convenient for quickly harvesting plants, which comprises a stainless steel frame, wherein a plurality of culture seats are arranged inside the stainless steel frame, wire gauze fixing components are arranged on the outer wall of each culture seat, an aeration device is arranged on one side of the stainless steel frame, a square inner edge is arranged on the inner wall of the stainless steel frame, a cross limiting rod is fixed on the inner wall of the square inner edge through welding and divides the square inner edge into a plurality of compartments, the culture seats are the same in shape as the compartments, the areas of the culture seats are slightly smaller than the compartments, a square outer edge is arranged on the outer wall of the top of each culture seat, the area of the outer peripheral surface of the square outer edge is slightly larger than the compartments, each wire gauze fixing component comprises a frame body, the shape of the frame body is the same as that of the culture seats, and the area of the inner peripheral surface, the invention has the characteristics of rapid plant harvesting and good wastewater treatment effect.

Description

Water cress culture apparatus convenient to harvest plant body fast

Technical Field

The invention relates to the technical field of water purification, in particular to a cress culture device convenient for quickly harvesting plants.

Background

Experiments show that the quality of sewage is greatly improved after the sewage passes through the cress wetland. Wherein, the reduction of ammonia nitrogen and total nitrogen is particularly obvious. The water cresses not only have the function of purifying water quality, but also can be harvested and removed continuously, so that the water cresses have both environmental benefit and economic benefit. The artificial floating island is a process for treating waste water by using suitable aquatic plants, and the principle is to remove pollutants in the environment by the special enrichment degradation capability of plants on heavy metals and organic substances.

The existing cress floating island is formed by an integrated and independent small island, when cress are harvested, the floating island needs to be dragged to the bank, then the whole floating island is taken out of water for harvesting, and the floating island is put back into the water after harvesting, so that time and labor are wasted; the existing water cress floating island can only be used for planting water cress, the space below the floating island is not fully utilized, and the wastewater treatment effect is general. Therefore, it is necessary to design a water cress culture device which has good wastewater treatment effect and is convenient for rapidly harvesting plants.

Disclosure of Invention

The invention aims to provide a water cress culture device convenient for rapidly harvesting plant bodies so as to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a cress culture apparatus convenient to gather in plant body fast, includes the stainless steel frame, the inside of stainless steel frame is provided with a plurality of culture seats, the outer wall of culture seat is provided with the fixed subassembly of wire netting, one side of stainless steel frame is provided with aeration equipment, because the quantity of culture seat is a plurality of, its modular arrangement mode for can directly hoist the culture seat when reaping, after the results are accomplished will cultivate the seat again put back in the stainless steel frame can, need not to remove whole stainless steel frame, labour saving and time saving, stainless steel frame are used for the position of fixed culture seat.

Further, the inner wall of stainless steel frame is provided with square inner edge, and the inner wall of square inner edge has the cross gag lever post through welded fastening, the cross gag lever post separates square inner edge for a plurality of compartment, the shape of culture seat is the same with the compartment, and the area of culture seat slightly is less than the compartment, the top outer wall of culture seat is provided with square outer fringe, and the outer peripheral face area of square outer fringe slightly is greater than the compartment, and square outer fringe is used for the position of fixed culture seat, and the cross gag lever post is used for separating each culture seat to block and prevent that the culture seat from falling down.

Further, the subassembly is fixed to the wire netting includes the frame body, the shape of frame body is the same with the culture seat, and its inner peripheral face area slightly is greater than the area of culture seat, the bottom of frame body distributes has a plurality of pole portions, the one end of pole portion is connected with the wire netting body, the bottom evenly distributed of wire netting body has elastic filler, the winding has the connection rope between elastic filler and the wire netting body, and the last absorption of elastic filler has the microorganism to be used for playing the effect of filtering organic matter, can further filter the organic matter of aquatic, combines two kinds of cresses and microorganism filtration, and the space of make full use of chinampa below, unit area waste water treatment effect are showing and are being superior to preceding both.

Furthermore, the inner wall of the square inner edge and two sides of the cross limiting rod are regularly provided with grooves, the width of each groove is the same as that of each rod, the positions of the grooves correspond to those of the rods, and the grooves are used for vacating the positions of the rods and do not prevent the wire netting fixing component from rising and falling.

Further, aeration equipment includes the air pump, the output of air pump is connected with main trachea, the even through connection in one side of main trachea has the bronchus, evenly be provided with the aeration dish on the bronchus, the bottom of stainless steel frame is fixed with the baffle through the bolt, the bronchus passes the baffle, and the aeration dish is located the bottom of elastic filler, and the air pump is with external air pump income main trachea, divide into the aeration dish by the bronchus again, and the aeration dish provides oxygen for the adsorbed microorganism on the elastic filler.

Further, stainless steel frame's top one side is provided with first buckling parts, stainless steel frame's top opposite side is provided with second buckling parts, two stainless steel frame is the end to end, is located on the stainless steel frame of adjacent position second buckling parts passes through the mutual joint of tenon fourth of the twelve earthly branches with first buckling parts, is in the same place second buckling parts and first buckling parts joint, makes stainless steel frame become the integral type structure, conveniently fixes and disassembles.

Further, the inner wall of culture seat is fixed with the polyethylene net through the bonding, the inside floor that is provided with the even vertical arrangement of a plurality of polyethylene net, and the bottom inner wall of floor is provided with annular inner edge, and it has culture medium to fill between per two adjacent floors, culture medium's bottom and annular inner edge contact, polyethylene net's bottom and culture seat's bottom leave a section distance, and culture medium is used for cultivating cress, and the distance that leaves is selected according to cress's root system average length, makes cress do not disturb the elastic filler of below, and the polyethylene net is used for guaranteeing the vertical upwards growth of cress, and the floor is in order to give the suitable growth space of every cress.

Furthermore, through holes are correspondingly arranged on the opposite angle sides of the square outer edge, and the insides of the holes are movably connected with lifting rods through bearings, the top of the lifting rod is provided with a lifting part, the bottom of the lifting rod is correspondingly provided with a fan-shaped outer edge, the diagonal side of the top of the frame body is correspondingly provided with a circular groove, the inner wall of the top of the circular groove is correspondingly provided with a fan-shaped inner edge, the bottom end of the lifting rod extends into the circular groove, the outer edge of the sector and the inner edge of the sector are in a matching structure, when only cress are harvested, the lifting rod is rotated to a state that the outer edge of the fan shape is not contacted with the inner edge of the fan shape, the lifting part is hung by the lifting rope to be lifted upwards, the frame body cannot move upwards along with the culture seat, when the elastic filler needs to be cleaned or replaced, the lifting rod is rotated until the fan-shaped outer edge is contacted with the fan-shaped inner edge, and the frame body can be pulled up along with the culture seat, so that the replacement and harvesting are convenient.

Furthermore, the stainless steel frames form one group, the bottom space of the three stainless steel frames is divided into an anaerobic microorganism area, a facultative microorganism area and an aerobic microorganism area by the partition plate, the number and the density of aeration discs in the anaerobic microorganism area, the facultative microorganism area and the aerobic microorganism area are distributed in an increasing trend, the anaerobic microorganism area, the facultative microorganism area and the aerobic microorganism area at the bottom of the two adjacent groups of stainless steel frames are arranged in a staggered mode, the number and the density of the aeration discs are determined according to the aerobic property of microorganisms, and the growth requirement of the microorganisms is met; when arranging, put in anaerobic microorganism, facultative aerobe and aerobic microorganism according to suitable position, each group's stainless steel frame's array orientation is the same with the rivers direction, and rivers can flow through next aerobic zone after first anaerobic zone flows through, because each group's microorganism filterable effect is different, and this kind of mode of arranging makes rivers filter more comprehensively.

Furthermore, the two sides of the stainless steel frame at the head end and the tail end are correspondingly connected with anchoring ropes, floating balls are arranged on the anchoring ropes, one ends of the anchoring ropes are connected with sinking piles, the sinking piles are inserted into the bottom of the pool and used for anchoring the whole device, the floating balls are used for providing buoyancy, and the angles of the anchoring ropes are adjusted according to water level changes, so that the position of the stainless steel frame is stable.

Compared with the prior art, the invention has the following beneficial effects: in the invention, the raw materials are mixed,

(1) the whole floating island can be fixed in a water treatment flow field by arranging the stainless steel frame and the culture seat, when plants are harvested, only a ship needs to be driven to pass through the space between the two floating islands, the culture seat is lifted by using lifting equipment on the ship to directly complete harvesting, then the culture seat is placed back to the original position, the whole floating island does not need to be dragged to the shore, and the harvesting is time-saving and labor-saving;

(2) by arranging the wire netting and the elastic filler, aquatic microorganisms are attached to the surface of the wire netting and the elastic filler, organic matters in water can be further filtered, two types of cresses and microorganisms are filtered and combined, the space below the floating island is fully utilized, and the wastewater treatment effect per unit area is obviously superior to that of the two types of cresses and microorganisms;

(3) by arranging the aeration device and the partition plate, the elastic filler is divided into anaerobic, facultative and aerobic microorganism areas according to the lower part of the floating island, the aeration amount is reasonably distributed, the biological carrier is suitable for biological contact oxidation methods and anaerobic fermentation methods, the filtering effect is sufficient, and meanwhile, the three areas are staggered according to the arrangement area of the floating island according to the water flow direction, so that the water quality of each basin can be fully filtered.

(4) Through being provided with the lifting rod, will lifting rod rotating certain angle when washing elastic filler needs to be changed, can hang up wire netting and culture seat together and change, then do not rotate the lifting rod when only needing to reap water cresses, can take off culture seat alone this moment, convenient change and results.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the stainless steel frame and the culture base of the present invention;

FIG. 3 is a schematic view of the wire fixing assembly of the present invention installed on a culture plate;

FIG. 4 is a schematic overall side view of the present invention;

FIG. 5 is a schematic view of the aeration apparatus distribution of the present invention;

FIG. 6 is a schematic sectional front view of the culture dish of the present invention;

FIG. 7 is a front cross-sectional structural view of the lifting rod and the frame body of the present invention;

FIG. 8 is a schematic view of the installation of the lifting rod and the frame body of the present invention;

in the figure: 1. a stainless steel frame; 11. a first buckling part; 12. a second fastening part; 13. a cross limiting rod; 14. a groove; 15. a square inner edge; 2. a culture seat; 21. a square outer edge; 3. anchoring the rope; 31. a floating ball; 32. pile sinking; 4. a partition plate; 5. an aeration device; 51. an air pump; 52. a main air pipe; 53. a bronchus; 54. an aeration disc; 55. an anaerobic microorganism zone; 56. a facultative zone of microorganisms; 57. an aerobic microorganism zone; 6. a polyethylene mesh; 61. a culture medium; 62. an annular inner edge; 63. water cress; 631. root system; 7. an elastic filler; 71. connecting ropes; 8. a wire netting fixing assembly; 81. a frame body; 811. a circular groove; 812. a fan-shaped inner edge; 82. a rod portion; 83. a wire netting body; 9. lifting a pull rod; 91. a pulling section; 92. fan-shaped outer edge.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides the following technical solutions: a cress culture apparatus convenient to harvest plants rapidly comprises a stainless steel frame 1, wherein a plurality of culture seats 2 are arranged inside the stainless steel frame 1, wire mesh fixing components 8 are arranged on the outer wall of the culture seats 2, an aeration device 5 is arranged on one side of the stainless steel frame 1, and the culture seats 2 can be directly lifted up during harvesting due to the modular arrangement mode of the culture seats 2, and the culture seats 2 can be placed back into the stainless steel frame 1 after harvesting is completed without moving the whole stainless steel frame 1, so that time and labor are saved, and the stainless steel frame 1 is used for fixing the positions of the culture seats 2;

the inner wall of the stainless steel frame 1 is provided with a square inner edge 15, a cross limiting rod 13 is fixed on the inner wall of the square inner edge 15 through welding, the square inner edge 15 is divided into a plurality of compartments by the cross limiting rod 13, the shape of the culture seat 2 is the same as that of the compartments, the area of the culture seat 2 is slightly smaller than that of the compartments, a square outer edge 21 is arranged on the outer wall of the top of the culture seat 2, the area of the outer peripheral surface of the square outer edge 21 is slightly larger than that of the compartments, the square outer edge 21 is used for fixing the positions of the culture seat 2, and the cross limiting rod 13 is used for separating each culture seat;

the wire netting fixing component 8 comprises a frame body 81, the shape of the frame body 81 is the same as that of the culture seat 2, the area of the inner peripheral surface of the frame body 81 is slightly larger than that of the culture seat 2, a plurality of rod parts 82 are distributed at the bottom of the frame body 81, a wire netting body 83 is connected to one end of each rod part 82, elastic fillers 7 are uniformly distributed at the bottom of each wire netting body 83, connecting ropes 71 are wound between the elastic fillers 7 and the wire netting bodies 83, microorganisms are adsorbed on the elastic fillers 7 and used for filtering organic substances, organic substances in water can be further filtered, two types of cresses and microorganisms are filtered and combined, the space below the floating island is fully utilized, and the wastewater treatment effect per unit area is obviously superior to that of the former two types of cres;

grooves 14 are regularly arranged on the inner wall of the square inner edge 15 and two sides of the cross limiting rod 13, the width of each groove 14 is the same as that of the rod part 82, the position of each groove 14 corresponds to that of the rod part 82, and the grooves 14 are used for vacating the positions of the rod parts 82 and not preventing the wire netting fixing component 8 from rising and falling;

the aeration device 5 comprises an air pump 51, the output end of the air pump 51 is connected with a main air pipe 52, one side of the main air pipe 52 is uniformly connected with a branch air pipe 53 in a penetrating way, an aeration disc 54 is uniformly arranged on the branch air pipe 53, a partition plate 4 is fixed at the bottom of the stainless steel frame 1 through a bolt, the branch air pipe 53 penetrates through the partition plate 4, the aeration disc 54 is positioned at the bottom of the elastic filler 7, the air pump 51 pumps external air into the main air pipe 52, and then the air is divided into the aeration disc 54 through the branch air pipe 53, and the aeration disc 54 provides oxygen for microorganisms adsorbed on the elastic filler 7;

a first buckling part 11 is arranged on one side of the top of the stainless steel frame 1, a second buckling part 12 is arranged on the other side of the top of the stainless steel frame 1, the two stainless steel frames 1 are in end-to-end connection, the second buckling parts 12 on the stainless steel frames 1 at adjacent positions are mutually clamped with the first buckling parts 11 through mortise and tenon joints, and the second buckling parts 12 are clamped with the first buckling parts 11 together, so that the stainless steel frames 1 are integrated, and the fixing and the disassembling are convenient;

a polyethylene net 6 is fixedly bonded on the inner wall of the culture seat 2, a plurality of rib plates which are uniformly and vertically arranged are arranged in the polyethylene net 6, annular inner edges 62 are arranged on the inner walls of the bottoms of the rib plates, a culture substrate 61 is filled between every two adjacent rib plates, the bottom of the culture substrate 61 is in contact with the annular inner edges 62, a certain distance is reserved between the bottom of the polyethylene net 6 and the bottom of the culture seat 2, the culture substrate 61 is used for cultivating cress 63, the reserved distance is selected according to the average length of root systems 631 of the cress 63, so that the cress do not disturb the elastic filler 7 below, the polyethylene net 6 is used for ensuring that the cress vertically grow upwards, and the rib plates are used for providing a proper growth space for each;

the diagonal side of the square outer edge 21 is correspondingly provided with a through hole, the inside of the hole is movably connected with a lifting rod 9 through a bearing, the top of the lifting rod 9 is provided with a lifting part 91, the bottom of the lifting rod 9 is correspondingly provided with a fan-shaped outer edge 92, the diagonal side of the top of the frame body 81 is correspondingly provided with a circular groove 811, the inner wall of the top of the circular groove 811 is correspondingly provided with a fan-shaped inner edge 812, the bottom end of the lifting rod 9 extends into the circular groove 811, the fan-shaped outer edge 92 and the fan-shaped inner edge 812 are matched structures, when only the cresses 63 are harvested, the lifting rod 9 is rotated to a state that the fan-shaped outer edge 92 is not contacted with the fan-shaped inner edge 812, at the moment, the lifting part 91 is hung upwards by a lifting rope, the frame body 81 cannot move upwards along with the culture base 2, when the elastic filler 7 needs to be cleaned or replaced, the lifting rod 9 is, the replacement and harvesting are convenient;

the three stainless steel frames 1 form a group, the bottom space of the three stainless steel frames 1 is divided into an anaerobic microorganism area 55, a facultative microorganism area 56 and an aerobic microorganism area 57 by the partition plates 4, the number and the density of aeration discs 54 in the anaerobic microorganism area 55, the facultative microorganism area 56 and the aerobic microorganism area 57 are in increasing distribution, the anaerobic microorganism area 55, the facultative microorganism area 56 and the aerobic microorganism area 57 at the bottom of the two adjacent groups of stainless steel frames 1 are arranged in a staggered mode, the number and the density of the aeration discs 54 are determined according to the aerobic property of microorganisms, and the growth requirements of the microorganisms are met; when the anaerobic microorganism, the facultative microorganism and the aerobic microorganism are placed at proper positions, the arrangement direction of each group of stainless steel frames 1 is the same as the water flow direction, water flows through the next aerobic zone after flowing through the first anaerobic zone, and the arrangement mode enables the water flow to be more comprehensive due to different filtering effects of each group of microorganisms;

the two sides of the stainless steel frame 1 at the head end and the tail end are correspondingly connected with anchoring ropes 3, floating balls 31 are arranged on the anchoring ropes 3, one ends of the anchoring ropes 3 are connected with sinking piles 32, the sinking piles 32 are inserted at the bottom of the pool and used for anchoring the whole device, the floating balls 31 are used for providing buoyancy, and the angles of the anchoring ropes 3 are adjusted according to water level changes, so that the position of the stainless steel frame 1 is stable;

example (b): when the culture device is used, the culture seats 2 can be directly lifted during harvesting due to the number of the culture seats 2 and the modularized arrangement mode, the culture seats 2 are placed back into the stainless steel frame 1 after harvesting is completed, the whole stainless steel frame 1 does not need to be moved, time and labor are saved, and the stainless steel frame 1 is used for fixing the positions of the culture seats 2; the square outer edge 21 is used for fixing the position of the culture seat 2, and the cross limiting rod 13 is used for separating each culture seat 2 and clamping to prevent the culture seat 2 from falling; microorganisms are adsorbed on the elastic filler 7 to play a role in filtering organic substances, so that organic substances in water can be further filtered, two types of cress and microorganisms are filtered and combined, the space below the floating island is fully utilized, and the wastewater treatment effect per unit area is obviously superior to that of the two types of cress and microorganisms; the groove 14 is used for freeing the rod part 82 from being lifted and fallen without hindering the wire fixing component 8; the air pump 51 pumps the outside air into the main air pipe 52, and then the air is divided into the aeration discs 54 by the branch air pipes 53, and the aeration discs 54 provide oxygen for the microorganisms adsorbed on the elastic filler 7; the second buckling part 12 and the first buckling part 11 are clamped together, so that the stainless steel frame 1 is of an integrated structure, and is convenient to fix and disassemble; the culture medium 61 is used for culturing the water cresses 63, the reserved distance is selected according to the average length of root systems 631 of the water cresses 63, the water cresses are not disturbed by the elastic filler 7 below, the polyethylene net 6 is used for ensuring that the water cresses vertically grow upwards, and the rib plates are used for providing a proper growth space for each water cresses; when only the cresses 63 are harvested, the lifting rod 9 is rotated to a state that the fan-shaped outer edge 92 is not in contact with the fan-shaped inner edge 812, the lifting part 91 is hung by the lifting rope to be lifted upwards, the frame body 81 cannot move upwards along with the culture seat 2, when the elastic filler 7 needs to be cleaned or replaced, the lifting rod 9 is rotated to a state that the fan-shaped outer edge 92 is in contact with the fan-shaped inner edge 812, and the frame body 81 is pulled up along with the culture seat 2 at the moment, so that the replacement and harvesting are convenient; the number and the density of the aeration discs 54 are determined according to the aerobic properties of the microorganisms, so that the aeration discs are more suitable for the growth requirements of the microorganisms; when the anaerobic microorganism, the facultative microorganism and the aerobic microorganism are placed at proper positions, the arrangement direction of each group of stainless steel frames 1 is the same as the water flow direction, water flows through the next aerobic zone after flowing through the first anaerobic zone, and the arrangement mode enables the water flow to be more comprehensive due to different filtering effects of each group of microorganisms; the sunk pile 32 is inserted at the bottom of the pool and used for anchoring the whole device, the floating ball 31 is used for providing buoyancy, and the angle of the anchoring rope 3 is adjusted according to the water level change, so that the position of the stainless steel frame 1 is stable.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a water cress culture apparatus convenient to fast harvest plant body, includes stainless steel frame (1), its characterized in that: a plurality of culture seats (2) are arranged in the stainless steel frame (1), an iron wire net fixing component (8) is arranged on the outer wall of each culture seat (2), and an aeration device (5) is arranged on one side of the stainless steel frame (1);

the inner wall of the stainless steel frame (1) is provided with a square inner edge (15), a cross limiting rod (13) is fixed on the inner wall of the square inner edge (15) through welding, the cross limiting rod (13) divides the square inner edge (15) into a plurality of compartments, the shape of the culture seat (2) is the same as that of the compartments, the area of the culture seat (2) is slightly smaller than that of the compartments, the outer wall of the top of the culture seat (2) is provided with a square outer edge (21), and the area of the outer peripheral surface of the square outer edge (21) is slightly larger than that of the compartments;

the iron wire net fixing component (8) comprises a frame body (81), the shape of the frame body (81) is the same as that of the culture seat (2), the area of the inner peripheral surface of the frame body is slightly larger than that of the culture seat (2), a plurality of rod parts (82) are distributed at the bottom of the frame body (81), one ends of the rod parts (82) are connected with an iron wire net body (83), elastic fillers (7) are uniformly distributed at the bottom of the iron wire net body (83), and connecting ropes (71) are wound between the elastic fillers (7) and the iron wire net body (83);

the aeration device (5) comprises an air pump (51), the output end of the air pump (51) is connected with a main air pipe (52), one side of the main air pipe (52) is uniformly connected with a branch air pipe (53) in a through mode, an aeration disc (54) is uniformly arranged on the branch air pipe (53), a partition plate (4) is fixed at the bottom of the stainless steel frame (1) through bolts, the branch air pipe (53) penetrates through the partition plate (4), and the aeration disc (54) is located at the bottom of the elastic filler (7);

the stainless steel frames (1) are divided into one group, the bottom space of the three stainless steel frames (1) is divided into an anaerobic microorganism area (55), a facultative microorganism area (56) and an aerobic microorganism area (57) by the partition plate (4), the number and the density of aeration discs (54) in the anaerobic microorganism area (55), the facultative microorganism area (56) and the aerobic microorganism area (57) are distributed in an increasing trend, and the anaerobic microorganism area (55), the facultative microorganism area (56) and the aerobic microorganism area (57) at the bottom of the stainless steel frames (1) of two adjacent groups are arranged in a staggered mode.

2. The cress cultivation device for facilitating the rapid harvest of plants as claimed in claim 1, wherein: grooves (14) are regularly arranged on the inner wall of the square inner edge (15) and two sides of the cross limiting rod (13), the width of each groove (14) is the same as that of the rod portion (82), and the positions of the grooves correspond to the rod portions (82).

3. The cress cultivation device for facilitating the rapid harvest of plants as claimed in claim 1, wherein: the stainless steel frame is characterized in that a first buckling part (11) is arranged on one side of the top of the stainless steel frame (1), a second buckling part (12) is arranged on the other side of the top of the stainless steel frame (1), the stainless steel frame (1) is in end-to-end connection, and the second buckling part (12) and the first buckling part (11) are in tenon-mortise joint with each other and are located on the stainless steel frame (1) at adjacent positions.

4. The cress cultivation device for facilitating the rapid harvest of plants as claimed in claim 1, wherein: the inner wall of cultivateing seat (2) is fixed with polyethylene net (6) through the bonding, polyethylene net (6) inside is provided with the floor of the even perpendicular arrangement of a plurality of, and the bottom inner wall of floor is provided with annular inner edge (62), and it has culture substrate (61) to fill between per two adjacent floors, the bottom and the annular inner edge (62) of culture substrate (61) contact, the bottom of polyethylene net (6) leaves one section distance with the bottom of cultivateing seat (2).

5. The cress cultivation device for facilitating the rapid harvest of plants as claimed in claim 1, wherein: the improved structure of the lifting frame is characterized in that through holes are correspondingly formed in the opposite angle sides of the square outer edge (21), the inner portion of each hole is movably connected with a lifting rod (9) through a bearing, a lifting part (91) is arranged at the top of each lifting rod (9), a fan-shaped outer edge (92) is correspondingly arranged at the bottom of each lifting rod (9), a circular groove (811) is correspondingly formed in the opposite angle side of the top of the frame body (81), a fan-shaped inner edge (812) is correspondingly arranged on the inner wall of the top of the circular groove (811), the bottom end of each lifting rod (9) extends into the circular groove (811), and the fan-shaped outer edge (92) and the fan-shaped.

6. The cress cultivation device for facilitating the rapid harvest of plants as claimed in claim 3, wherein: the two sides of the stainless steel frame (1) at the head end and the tail end are correspondingly connected with anchoring ropes (3), floating balls (31) are arranged on the anchoring ropes (3), and one ends of the anchoring ropes (3) are connected with sunk piles (32).