CN212504487U - Freshwater aquaculture tail water biological comprehensive purification system - Google Patents
Freshwater aquaculture tail water biological comprehensive purification system Download PDFInfo
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- CN212504487U CN212504487U CN202021294435.9U CN202021294435U CN212504487U CN 212504487 U CN212504487 U CN 212504487U CN 202021294435 U CN202021294435 U CN 202021294435U CN 212504487 U CN212504487 U CN 212504487U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/60—Fishing; Aquaculture; Aquafarming
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Abstract
The utility model relates to a biological clean system that synthesizes of freshwater aquaculture tail water. For filling the prior art blank, the utility model discloses a synthesize the purification pond, this synthesize the purification pond and be rectangle, its one end is equipped with the water inlet, and the other end is equipped with the delivery port, synthesize the purification pond from water inlet to delivery port, be equipped with primary sedimentation tank, benthophyte processing area, filter feeding fish culture district and biological chinampa processing area in proper order, synthesize the purification pond from the water inlet with be equipped with the aeration zone between the primary sedimentation zone, aeration zone bottom is equipped with the aeration pipe, and it has the through-hole to open on this aeration pipe, and communicates with each other with the export of adapted air pump through the valve, and lotus root has been planted to the bottom in the primary sedimentation zone, and both sides are built respectively around the benthophyte processing area and have the benthophyte partition wall to be furnished with benthophyte trimming means, bent. The utility model discloses simple structure, purifying effect is good, and the operation is reliable, and difficult foul water is applicable to the purification treatment of aquaculture water, recycled water.
Description
Technical Field
The utility model relates to a biological clean system that synthesizes of freshwater aquaculture tail water.
Background
Chinese patent application published in 20.04.2018 and having publication number CN 107935296A discloses an ecological treatment system and method for aquaculture wastewater, wherein the system comprises a filter-feeding fish culture pond, a primary filter pond, a biological floating island treatment pond, a secondary filter pond and a submerged plant treatment pond which are connected in sequence; wherein, the primary filter tank and the secondary filter tank are both filled with volcanic rocks, plants are planted on the upper surface of the volcanic rocks, and microorganism strains are put in the lower parts of the volcanic rocks. The patent document indicates that the submerged plants include those having a water body purification function such as hornworts.
It is known that: the hydrilla verticillata, the hornwort and the waterweed have good adaptability and strong regeneration capacity, provide 70 percent of dissolved oxygen in the water body, can quickly convert eutrophic components in the water body into organic matters, can provide food for river crabs, grass carps, lobsters and the like, but are easy to foul water.
During the cultivation process, people find that the submerged plants are easy to rot and smell when the submerged plants are close to the water level, and if the water level is too high, the photosynthesis of the submerged plants is influenced. Therefore, it is proposed to prevent the strong odor of the submerged plants by controlling the water level, thereby maximizing the purification function of the submerged plants.
For example, it is proposed to reasonably use the water level to control the growth of the waterweed, because the waterweed grows according to the water level, the use of the water level to control the growth of the waterweed does not cause the death of the floating root of the waterweed, but also can keep the good growth of the waterweed. The technical key point is that the grass head of the waterweed is always kept below 10 centimeters of the water surface, and the water level is slowly raised along with the growth of the waterweed, so that the excessive growth of the waterweed can be inhibited on one hand, and the waterweed can be ensured to be fully subjected to photosynthesis on the other hand, thereby being beneficial to root tying, leading the plants to be short and strong and not easy to float roots. In the strong convection weather such as rainstorm, strong wind, typhoon and the like, the water level is lowered to expose the grass head, and the phenomenon that the water flow is stirred and the water level rapidly rises due to the strong convection weather is avoided, so that the waterweeds float on the root.
This is possible to realize in the south where the water net is densely covered, and the water source is short originally in the north, and the water level is difficult to control. And when the submerged plant grows to be close to the water surface, manually wading or driving a boat to harvest the submerged plant, and cutting off the middle upper part of the submerged plant to prevent the submerged plant from rotting close to the water surface. However, the method is still not ideal because submerged plants are inevitably damaged by artificial wading harvesting, the submerged plants are seriously disturbed no matter the artificial wading harvesting or boat-driving harvesting, partial stems and leaves of the harvested submerged plants are entangled with submerged plants under water and are difficult to separate, and the partial stems and leaves of the harvested submerged plants are more prone to rot and stink. In a word, the prior art urgently needs a new submerged plant cutting method and a device which are convenient for cutting submerged plants underwater, have small disturbance to the submerged plants in the cutting process, naturally separate stems and leaves from underwater submerged plants after cutting, have small damage to the submerged plants left underwater, and are not easy to rot and foul water.
In addition, the ecological treatment system for aquaculture wastewater still has the problem of unreasonable sequential design.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is how to fill the above-mentioned blank of prior art, provide a cutting process and little to the benthophyte disturbance, the stem leaf nature and the separation of submarine benthophyte after the cutting, little to staying the damage of submarine benthophyte, the biological integrated purification system of tail water is bred in fresh water of difficult rotten foul water.
In order to solve the technical problem, the freshwater aquaculture tail water biological comprehensive purification system comprises a comprehensive purification tank, wherein the comprehensive purification tank is rectangular, one end of the comprehensive purification tank is provided with a water inlet, the other end of the comprehensive purification tank is provided with a water outlet, the comprehensive purification tank is sequentially provided with a primary sedimentation area, a submerged plant treatment area, a filter feeding fish culture area and a biological floating island treatment area from the water inlet to the water outlet, the comprehensive purification tank is provided with an aeration area between the water inlet and the primary sedimentation area, a separation net is arranged between the aeration area and the primary sedimentation area, the bottom of the aeration area is provided with an aeration pipe, the aeration pipe is provided with a through hole and is communicated with an outlet of an adapted air pump through a valve, lotus roots are planted in sludge at the bottom in the primary sedimentation area, submerged partition walls are respectively built at the front side and the rear side of the submerged plant treatment area, a submerged plant planting area is arranged in the submerged plant planting area, and elodea algae or goldfish algae are, an oxygenation aeration area is also arranged between the submerged plant treatment area and the filter feeding fish culture area, a plurality of web wheel type oxygenation aerators are uniformly arranged in the oxygenation aeration area, a V-shaped grid is arranged between the oxygenation aeration area and the filter feeding fish culture area, sundries collecting nets are respectively arranged at two ends of the V-shaped grid, a multi-layer suspension cage culture area is also arranged between the V-shaped grid and the filter feeding fish culture area, a plurality of multi-layer suspension cages are uniformly arranged in the multi-layer suspension cage culture area, mussels and/or river snails are cultured in the multi-layer suspension cages, the filter feeding fish culture area and the biological floating island treatment area are overlapped to form the filter feeding fish culture and biological floating island treatment area, silver carps and/or grass carps are put in the filter feeding fish culture and biological floating island treatment area, a plurality of floating beds are arranged on the water surface of the filter feeding fish culture and biological floating island treatment area, and water hyacinth or water peanuts are planted on each floating bed, the submerged partition walls on the two sides of the submerged plant planting area are spaced by 10-15 cm and are provided with submerged plant trimming devices, and the upper surfaces of the submerged partition walls are 5-10 cm away from the water surface.
According to the design, firstly, fresh water to be treated enters the aeration area firstly, aeration treatment is carried out, the chemical oxygen consumption, the content of harmful substances and harmful microorganisms in the fresh water are reduced, then the fresh water enters the primary settling area, the lotus roots are planted in the primary settling area, a large amount of villi are densely distributed on stems and leaves of the lotus roots, the villi can adsorb dirt in the water, meanwhile, the fertilizer is provided for the lotus roots in the bottom silt of the dirt settling area in the water, and the growth of the lotus roots is facilitated.
And then the water enters the submerged plant treatment area for further purification, when the submerged plant grows too high, a worker walks along the submerged partition wall, the submerged plant is trimmed by using the submerged plant trimming device, so that the top of the submerged plant is kept below 10 cm of the water surface, and the submerged plant trimming device can adopt long-handle scissors. The mode of walking along the submerged partition wall and pruning the submerged plants by using the long-handle scissors is slow in speed, but the submerged plants cannot be trampled in the whole process, meanwhile, the disturbance on the submerged plants left at the bottom is small, the cut stems and leaves naturally float upwards, the underwater submerged plants flow downwards and are shunted to sundries on two sides by the V-shaped grids after meeting the V-shaped grids, then the underwater submerged plants are fished out by workers, and the underwater submerged plants are dried in the sun and used as feeds.
After passing through the aeration area, the water from the submerged plant treatment area is aerated and aerated by a paddle wheel aeration machine, then enters the filter feeding fish culture and biological floating island treatment area, the plankton and organic matters in the water are eaten by filter feeding fish, namely grass carp or silver carp, the rich-culture substances in the water are absorbed by the floating plants on the floating bed, the water quality is further purified, and then the water is discharged from a water outlet. The floating plants are fixed on the floating bed and are not easy to run off and flood.
Preferably, the submerged plant trimming device comprises an eccentric wheel and a horizontal pushing frame, the horizontal pushing frame comprises two walking wheels, two adjustable cross rods and two handle rods, each adjustable cross rod comprises a double-end screw, a long pipe and a short pipe, the middle part of the double-end screw is in a regular hexagonal prism shape, the two sides of the double-end screw are screw rods, the rotating directions of the screw rods are opposite, the inner side ends of the long pipe and the short pipe are respectively provided with corresponding threaded holes, the two ends of the double-end screw are respectively screwed into the corresponding threaded holes, the two ends of the adjustable cross rod are respectively welded on the inner sides of the middle sections of the two handle rods, the outer sides of the middle lower parts of the two handle rods are also welded with two cross shafts, the two walking wheels are sleeved on the two cross shafts in a one-to-one correspondence manner, the lower ends of the two handle rods are provided with vertical pipes,
the eccentric wheel comprises an eccentric wheel, a sleeve and a core rod, wherein movable teeth which are longitudinally arranged are fixed on one side of the core rod, one end of the core rod is connected to a flat plate, the tail end of the flat plate extends towards two sides, a through groove which is perpendicular to the axial lead of the core rod is formed in the end of the flat plate and is sleeved on a stand column of the eccentric wheel through the through groove, a roller is arranged on a vertical shaft at the lower end of the other handle rod, a longitudinal groove is formed in the sleeve, static teeth which are longitudinally arranged are fixed on the lower edge of the longitudinal groove, the core rod penetrates through the sleeve, the movable teeth extend out of the longitudinal groove of the sleeve, the outer end of the sleeve is fixed on the vertical shaft through a connecting plate, a backward extending arm is further arranged at the lower part of each handle rod, a guide wheel is arranged at the tail end of the extending arm, the axial lead of the guide wheel is parallel to the axial lead of, The idler wheel abuts against the inner side face of the submerged partition wall with the outer edge of the guide wheel on the same side of the idler wheel, the horizontal pushing frame is pushed to run on the submerged partition wall, the eccentric wheel can drive the core rod to be inserted into the sleeve in a pulling mode, and then the moving teeth are driven to reciprocate and stagger, so that the middle upper portion of the submerged plant can be cut.
When the submerged plant is close to the water surface, the cutting of the aquatic weeds can be finished by pushing the horizontal pushing frame, and the tops of the aquatic weeds can not grow to be close to the water surface all the time. Because the submerged plant trimming device cuts the submerged plant along the preset height, the lower part of the submerged plant is not disturbed and damaged, and the cut upper stem leaves naturally float on the water surface and are easy to collect and process. By the design, the problem that the cut stem leaves of the submerged plant are difficult to scoop up from the water completely is solved, and the rotten odor water accident is caused.
Preferably, the static teeth and the moving teeth are made of triangular stainless steel plates, adjacent contact surfaces of the static teeth and the moving teeth are planes, slope blades are arranged on two waists of each triangular plate respectively, and the static teeth and the moving teeth are ground automatically when being staggered with each other. So design, when quiet tooth and movable tooth are crisscross, its domatic sword grinds each other, helps domatic sword to keep sharp, and its principle is similar to scissors or the push-type broach of hair-dressing usefulness.
The utility model discloses fresh water aquaculture tail water biological integrated purification system has simple structure, and purifying effect is good, and the operation is reliable, and the advantage of difficult foul water is applicable to the purification treatment of aquaculture water, recycled water.
Drawings
The biological comprehensive purification system of the freshwater aquaculture tail water of the utility model is further explained by combining the attached drawings as follows:
FIG. 1 is a schematic top view of the biological comprehensive purification system for tail water from fresh water aquaculture;
FIG. 2 is a schematic top view of the core bar, the movable teeth, the flat plate and the through slots on the flat plate of the submerged plant pruning device;
FIG. 3 is a schematic perspective view of the sleeve, the stationary teeth and the connecting plate of the submerged plant pruning device;
fig. 4 is a schematic structural diagram of the operating state of the submerged plant trimming device.
In the figure: 1 is a water inlet, 2 is a water outlet, 3 is a primary sedimentation area, 4 is a submerged plant treatment area, 5 is an aeration area, 6 is a separation net, 7 is an aeration pipe, 8 is a submerged separation wall, 9 is an aeration area, 10 is a V-shaped grid net, 11 is a sundries collecting net, 12 is a multi-layer suspension cage culture area, 13 is a multi-layer suspension cage, 14 is a filter-feeding fish culture and biological floating island treatment area, 15 is a floating bed, 16 is a submerged plant planting area, 17 is an eccentric wheel, 18 is a travelling wheel, 19 is a transverse adjusting rod, 20 is a handle rod, 191 is a double-end screw rod, 192 is a long pipe, 193 is a short pipe, 21 is a transverse shaft, 22 is a vertical pipe, 23 is a vertical column, 24 is a sleeve pipe, 25 is a core rod, 26 is a movable tooth, 27 is a flat plate, 28 is a through groove, 29 is a roller, 30 is a longitudinal groove, 31 is a static tooth, 32 is a connecting plate, 33 is a vertical shaft, 34 is an extension arm, 35 is a guide.
Detailed Description
The first implementation mode comprises the following steps: as shown in fig. 1, this clean system is synthesized to freshwater aquaculture tail water biology is including synthesizing the clean water pond, should synthesize the clean water pond and be the rectangle, and its one end is equipped with water inlet 1, and the other end is equipped with delivery port 2, synthesizes the clean water pond from water inlet to delivery port, is equipped with primary settlement district 3, benthophyte treatment zone 4, filter feeding fish culture district and biological chinampa treatment zone, its characterized in that in proper order: an aeration area 5 is arranged between a water inlet and the primary sedimentation area 3 of the comprehensive purification water tank, a separation net 6 is arranged between the aeration area 5 and the primary sedimentation area 3, an aeration pipe 7 is arranged at the bottom of the aeration area 5, a through hole is formed in the aeration pipe 7 and is communicated with an outlet (not shown in the figure) of an adapted air pump through a valve, lotus roots are planted in sludge at the bottom in the primary sedimentation area 3, submerged partition walls 8 are respectively built at the front side and the rear side of the submerged plant treatment area 4, a submerged plant planting area 16 is arranged in the submerged plant treatment area 4, waterweeds or golden fish algae are uniformly planted in the submerged plant planting area 16, an oxygenation aeration area 9 is also arranged between the submerged plant treatment area 4 and the filter-feeding fish culture area, a plurality of web oxygenation aerators (not shown in the figure) are uniformly arranged in the oxygenation aeration area 9, and a V-shaped grid 10 is arranged between the oxygenation aeration area and the filter-feeding fish culture area, two ends of the V-shaped grid 10 are respectively provided with a sundries collecting net 11, a multi-layer suspension cage culture area 12 is arranged between the V-shaped grid 10 and the filter-feeding fish culture area, a plurality of multi-layer suspension cages 13 are uniformly arranged in the multi-layer suspension cage culture area 12, mussels and/or mussels are cultured in the multi-layer suspension cages 13, the filter feeding fish culture area and the biological floating island processing area are overlapped to form a filter feeding fish culture and biological floating island processing area 14, silver carp and/or grass carp are raised in the water in the filter feeding fish culture and biological floating island treatment area 14, a plurality of floating beds 15 are arranged on the water surface of the filter feeding fish culture and biological floating island treatment area 14, water hyacinth or water peanuts are planted on each floating bed 15, the interval between the submerged partition walls 8 at the two sides of the submerged plant planting area is 10-15 cm, and is provided with a submerged plant trimming device, and the upper surface of the submerged partition wall 8 is 5-10 cm away from the water surface.
As shown in fig. 2-4, the submerged plant pruning device comprises an eccentric wheel 17 and a horizontal pushing frame, the horizontal pushing frame comprises two walking wheels 18, two adjustable cross rods 19 and two handle bars 20, wherein each adjustable cross rod 19 comprises a double-head screw 191, a long pipe 192 and a short pipe 193, the middle part of the double-head screw 191 is in a regular hexagonal prism shape, the two sides of the double-head screw 191 are screws, the rotation directions of the screws are opposite, the inner ends of the long pipe 192 and the short pipe 193 are respectively provided with corresponding threaded holes, the two ends of the double-head screw 191 are respectively screwed into the corresponding threaded holes, the two ends of the adjustable cross rod 19 are respectively welded on the inner sides of the middle parts of the two handle bars 20, the outer sides of the middle lower parts of the two handle bars 20 are also welded with two horizontal shafts 21, the two walking wheels 18 are respectively sleeved on the two horizontal shafts 21, the lower ends of, the eccentric 17 is arranged on a vertical shaft at the lower end of a handle rod 20, and the eccentric 17 is eccentrically provided with a column 23.
The handle bar is characterized by further comprising a sleeve 24 and a core bar 25, wherein movable teeth 26 which are longitudinally arranged are fixed on one side of the core bar, one end of the core bar 25 is connected to a flat plate 27, the tail end of the flat plate 27 extends towards two sides, a through groove 28 which is perpendicular to the axial lead of the core bar 25 is formed in the core bar, the core bar 25 is sleeved on a vertical column 23 of the eccentric wheel 17 through the through groove 28, a vertical shaft at the lower end of the other handle bar 20 is provided with a roller 29, a longitudinal groove 30 is formed in the sleeve 24, static teeth 31 which are longitudinally arranged are fixed on the lower edge of the longitudinal groove 30, the core bar 25 is arranged in the sleeve 24 in a penetrating mode, the movable teeth 26 extend out of the longitudinal groove 30 of the sleeve 24, and the.
The lower part of each handle rod 20 is also provided with a backward extension arm 34, the tail end of the extension arm 34 is provided with a guide wheel 35, the axial lead of the guide wheel 35 is parallel to the axial lead of the vertical shaft on the handle rod 20 on the same side, two walking wheels 18 can be respectively pressed on the submerged partition walls 8, the length of the adjustable cross rod 19 can be changed by adjusting the double-headed screw rod 191, the outer edges of the eccentric wheel 17, the roller 29 and the guide wheel 35 on the same side are respectively abutted against the inner side surfaces of the adjacent submerged partition walls 8 to push the horizontal pushing frame to walk on the submerged partition walls, the eccentric wheel 17 can drive the core rod 25 to be inserted in the sleeve 24 in a pulling way, and further drive the movable teeth 26 to reciprocate and stagger, thereby realizing the cutting of the middle upper parts of the.
The static teeth 31 and the moving teeth 26 are made of triangular stainless steel plates, adjacent contact surfaces of the static teeth and the moving teeth are planes, slope blades 36 are arranged on two waists of each triangular plate, and when the adjacent static teeth 31 and the adjacent moving teeth 26 are staggered with each other, the static teeth and the moving teeth are automatically ground.
Note: when the submerged plant trimming device works, the static teeth 31 only move forwards along with the horizontal pushing frame, and the moving teeth 26 still move left and right repeatedly and ceaselessly when moving forwards along with the horizontal pushing frame.
Claims (3)
1. The utility model provides a biological clean system that synthesizes of freshwater aquaculture tail water, is rectangle including synthesizing the clean water basin, and its one end is equipped with the water inlet, and the other end is equipped with the delivery port, synthesizes the clean water basin from water inlet to delivery port, is equipped with elementary settlement zone, benthophyte processing area, filter feeding fish culture district and biological chinampa processing area, its characterized in that in proper order: an aeration area is arranged between the self water inlet of the comprehensive purification water tank and the primary sedimentation area, a separation net is arranged between the aeration area and the primary sedimentation area, an aeration pipe is arranged at the bottom of the aeration area, a through hole is formed in the aeration pipe and is communicated with an outlet of an adapted air pump through a valve, lotus roots are planted in sludge at the bottom in the primary sedimentation area, submerged partition walls are respectively built at the front side and the rear side of the submerged plant treatment area, a submerged plant planting area is arranged in the submerged plant treatment area, waterweeds or golden fish algae are uniformly planted in the submerged plant planting area, an aeration area is also arranged between the submerged plant treatment area and the filter-feeding fish culture area, a plurality of web wheel type aeration machines are uniformly arranged in the aeration area, a V-shaped grid net is arranged between the aeration area and the filter-feeding fish culture area, sundries collecting nets are respectively arranged at two ends of the V-shaped grid net, and a multi-layer cage culture area is also arranged between the V-shaped grid net and the filter-feeding fish culture area, the multilayer suspension cage culture area is uniformly provided with a plurality of multilayer suspension cages, mussels and/or river snails are cultured in the multilayer suspension cages, the filter feeding fish culture area and the biological floating island treatment area are overlapped to form a filter feeding fish culture and biological floating island treatment area, silver carps, bighead carps and/or grass carps are cultured in the filter feeding fish culture and biological floating island treatment area, a plurality of floating beds are arranged on the water surface of the filter feeding fish culture and biological floating island treatment area, each floating bed is planted with water hyacinth or water peanuts, the interval between the submerged partition walls on two sides of the submerged plant culture area is 10-15 centimeters, a submerged plant trimming device is arranged, and the distance between the upper surface of each submerged partition wall and the water surface is 5-10 centimeters.
2. The freshwater aquaculture tail water biological comprehensive purification system according to claim 1, characterized in that: the submerged plant trimming device comprises an eccentric wheel and a horizontal pushing frame, wherein the horizontal pushing frame comprises two walking wheels, two adjustable cross rods and two handle rods, each adjustable cross rod comprises a double-head screw, a long pipe and a short pipe, the middle part of the double-head screw is in a regular hexagonal prism shape, the two sides of the double-head screw are screw rods, the rotating directions of the screw rods are opposite, the inner side ends of the long pipe and the short pipe are respectively provided with corresponding threaded holes, the two ends of the double-head screw are respectively screwed into the corresponding threaded holes, the two ends of the adjustable cross rods are respectively welded on the inner sides of the middle sections of the two handle rods, the outer sides of the middle lower parts of the two handle rods are also welded with two transverse shafts, the two walking wheels are sleeved on the two transverse shafts in a one-to-one correspondence manner, the lower ends of the two handle rods are provided with,
the length of the adjustable cross rod can be changed by adjusting the double-head screw rod, wherein the guide wheel is arranged at the tail end of each extension arm, the guide wheel shaft axis is parallel to the vertical shaft axis on the handle rod at the same side, the two walking wheels can be respectively pressed on the submerged partition walls, and the outer edges of the eccentric wheel, the roller and the guide wheel on the same side of the eccentric wheel and the roller are respectively abutted against the inner side surfaces of the adjacent submerged partition walls to push the horizontal pushing frame to walk on the submerged partition walls, and the eccentric wheel can drive the core rod to be inserted into the sleeve so as to drive the movable teeth to reciprocate and stagger, thereby realizing the cutting of the middle upper part of the submerged plant.
3. The freshwater aquaculture tail water biological comprehensive purification system according to claim 2, characterized in that: the static teeth and the moving teeth are made of triangular stainless steel plates, adjacent contact surfaces of the static teeth and the moving teeth are planes, slope blades are arranged on two waists of each triangular plate respectively, and the static teeth and the moving teeth are ground automatically when being staggered with each other.
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| CN202021294435.9U CN212504487U (en) | 2020-07-03 | 2020-07-03 | Freshwater aquaculture tail water biological comprehensive purification system |
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| CN202021294435.9U CN212504487U (en) | 2020-07-03 | 2020-07-03 | Freshwater aquaculture tail water biological comprehensive purification system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111635083A (en) * | 2020-07-03 | 2020-09-08 | 山东省淡水渔业研究院（山东省淡水渔业监测中心） | Freshwater aquaculture tail water biological comprehensive purification system |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111635083A (en) * | 2020-07-03 | 2020-09-08 | 山东省淡水渔业研究院（山东省淡水渔业监测中心） | Freshwater aquaculture tail water biological comprehensive purification system |
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