CN109111016A - Sterilizing unit for shrimp culture - Google Patents

Sterilizing unit for shrimp culture Download PDF

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Publication number
CN109111016A
CN109111016A CN201810728643.6A CN201810728643A CN109111016A CN 109111016 A CN109111016 A CN 109111016A CN 201810728643 A CN201810728643 A CN 201810728643A CN 109111016 A CN109111016 A CN 109111016A
Authority
CN
China
Prior art keywords
breeding
box
water
oxygen
sterilizing unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201810728643.6A
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Chinese (zh)
Inventor
刘桓君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lanxi City Bapri Ke Technology Services Ltd
Original Assignee
Lanxi City Bapri Ke Technology Services Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lanxi City Bapri Ke Technology Services Ltd filed Critical Lanxi City Bapri Ke Technology Services Ltd
Priority to CN201810728643.6A priority Critical patent/CN109111016A/en
Publication of CN109111016A publication Critical patent/CN109111016A/en
Withdrawn legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/003Aquaria; Terraria
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04Arrangements for treating water specially adapted to receptacles for live fish
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/283Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/32Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00Aeration of stretches of water

Abstract

The present invention is provided to the sterilizing units of shrimp culture, belong to technical field of aquaculture, including box for breeding, top offers U-shaped feed inlet in the middle part of box for breeding, box for breeding bottom is equipped with Manure collector, oxygen output pipe is equipped with above Manure collector, pass through drinking-water pipe a connection bactericidal device on the right side of box for breeding, suction pump b is equipped in the middle part of drinking-water pipe a, baffle is equipped with inside U-shaped feed inlet, upper surface is equipped with motor in the middle part of baffle, and the output end of motor connects main shaft by baffle, main shaft lower end connects stirring blade, is equipped with active charcoal bag inside stirring blade.The present apparatus can adsorb the sundries in water, purify water, and play the role of disinfection and sterilization, the also oxygen content in increase water to cultivation water, collect excrement, improve the survival rate of aquatic products.

Description

Sterilizing unit for shrimp culture
Technical field
The invention belongs to technical field of aquaculture, and in particular to the sterilizing unit for shrimp culture.
Background technique
Ozone belongs to bacteriolyic disinfectant, can achieve that thoroughly, for good and all to eliminate interior of articles all for sterilizing Microorganism.Its principle can be destroyed or microbivorous cell wall using ozone, and cell interior is promptly diffused into, and oxidation is broken Enzyme in bad cell makes cell that penetrating sex distortion occur, and causes its dissolution dead.Its disinfection be it is instantaneous, thoroughly, with biography The Cl2 of system is compared, and ozone sterilization ability is its 600~3000 times.Research data shows that action time is water in 5~10min Middle 0.2~0.3mg/L of concentration is just enough to kill all coliforms;At 20 °C, daily with Ozone Water (0.15mg/L) 10min is handled, just effectively to control the nosomycosises of fish eyed eggs.Due to the unstability of ozone, at 25 DEG C, half-life period is only For 30min, oxygen can be resolved into quickly, significant impact will not be caused to aqueous bio, also without medicament residue.In Medicines in Aquaculture day In the case that benefit is limited, develops ozone disinfecting technology and equipment is very important.What it is due to ozone generating-device generation is gas Body odor oxygen, how to generate the ozone of suitable concentration in water is the key technology that ozone application is sterilized in aquaculture body.
Present aquaculture medication is more, so the complicated component of water and ozone reaction product are also complicated, on the market also A kind of ultraviolet germicidal lamp, its structure is complicated, more inconvenient when in use, and higher cost is killed when sterilizing to water Bacterium Disinfection Effect is bad, and low efficiency, not very practical.
Summary of the invention
The purpose of the present invention is to provide the sterilizing units for shrimp culture, can adsorb the sundries in water, purify water, There are disinfection and sterilization, the also oxygen content in increase water to cultivation water, collects excrement, improve the survival rate of aquatic products.
The technical scheme of the invention to solve the technical problem is: it is used for the sterilizing unit of shrimp culture, including Box for breeding, box for breeding middle part top offer U-shaped feed inlet, and box for breeding bottom is equipped with Manure collector, oxygen out is equipped with above Manure collector Pipe, box for breeding right side are equipped with suction pump b, are equipped with inside U-shaped feed inlet by drinking-water pipe a connection bactericidal device, the middle part drinking-water pipe a Baffle, baffle middle part upper surface are equipped with motor, and the output end of motor passes through baffle and connects main shaft, and main shaft lower end connects paddle Piece, stirring blade inside are equipped with active charcoal bag.The present apparatus is multiple functional, and structure is simple, can cultivate various aquatic products, and cultivation water exists Cultivation water can be pumped into sterilizing unit and sterilize transition by the time longer activity that will affect aquatic products in box for breeding, suction pump, again It returns in box for breeding, the active charcoal bag inside stirring blade can adsorb the impurity in water, while motor will drive stirring blade and turn Dynamic, agitation water body increases the oxygen content in water, promotes the growth of shrimps.
Preferably, oxygen output pipe surface is evenly equipped with oxygen exhaust, oxygen being equipped on the left of oxygen output pipe and is pumped, oxygen pump is located at box for breeding Outside.When oxygen content in water deficiency, oxygen pump can give cultivation water fast oxygenation, prevent aquatic products anoxic from causing large area dead It dies, reduces economic benefit.
Preferably, be equipped with sieve above oxygen output pipe, it is connected with floating ball between the grid inside sieve, inside each floating ball Equipped with cross baffle.Sieve can stop shrimp to move about to box for breeding bottom, avoid shrimp from piercing Manure collector, the floating ball in the middle part of sieve can make Sieve floats up and down, and supports entire sieve, improves the stability of sieve.
Preferably, connecting one end of elastic string on the side wall of box for breeding, the other end of elastic string connects out pellet, discharges Ball surface is evenly equipped with shrinkage pool, and discharge port is designed between each shrinkage pool, and discharge port connects material collecting tank by discharge pipe.Material collecting tank Bait can be first collected into together, when the aquatic products of shrimp or cultivation, which meets this, goes out pellet, the bait inside pellet be will disperse out In box for breeding, above-mentioned design can save bait, moreover it is possible to prevent feeding from excessively concentrating and cause bait to eat up to sink to the bottom, in the box for breeding Discharging ball have certain elasticity, discharging ball surface is additionally provided with netted shrinkage pool, and when oxygen output pipe goes out oxygen, bubble will push discharging Club slowly bounces, and makes often have fluctuation in water, to increase the contact surface of water and air, admits air into water, and pellet is fallen after rise out It can be allowed to constantly turn round at a slow speed using the shrinkage pool on surface and the fluctuation of water flow after into water, to increase the upheaval of water, water body can be made It slowly flows, water oxygen ion can be increase accordingly, and bacterium colony frequent activities cause dissolved oxygen amount to increase, shrimp is made not have anoxia phenomenon.
Preferably, bactericidal device includes degerming case, stainless steel tube body, stainless steel tubular body peace are equipped with inside degerming case Equipped with germicidal tube, germicidal tube lower end connecting bracket, germicidal tube upper end connects control panel, is equipped with and stores in the middle part of control panel Battery, degerming bottom portion connect supporting leg.In the left side for initially entering stainless steel tube body into the intracorporal water of stainless steel tube In chamber, will stay on the several seconds in stainless steel tube body during escaping up, during stop, ultraviolet germicidal lamp into Row irradiates, and dead can disintegrate in the bacterial virus several seconds in water, and disinfection effect is good, and what can be continued carries out water Sterilizing greatly improves work efficiency.Whole device structure is simple, and rationally, disinfection effect is good for design, high-efficient, It is practical.
Preferably, germicidal tube is honey comb structure, germicidal tube is movably connected with bracket.Germicidal tube and bracket Flexible connection can ensure that can remove cleaning at once when there is dirt on germicidal tube surface, that indirectly improves fluorescent tube uses the longevity Life.
Preferably, Manure collector includes grid, the string bag is connected below grid, string bag outer layer is equipped with housing, sets below the string bag There is collection colostomy bag, oscillator is installed inside collection colostomy bag, catch basin is housed on the outside of collection colostomy bag.The collector can collect the excrement, residual of biology Percent 80 or more bait, reduces the pollution to water environment, is good fertilizer after the excrement desiccation being collected simultaneously, and collect effect Rate is high.
Compared with prior art, the invention has the benefit that the active charcoal bag inside stirring blade can be adsorbed in water Impurity, while motor will drive stirring blade rotation, agitation water body increases the oxygen content in water, promotes the growth of shrimps, sieve Shrimp can be stopped to move about to box for breeding bottom, avoid shrimp from piercing Manure collector, bactericidal device disinfection effect is good, and can continue To water carry out sterilizing, greatly improve work efficiency, the sterilization tube of bactericidal device can be freely disassembled cleaning, the collector It can the pollution of the biological excrement of collection, residual bait reduction to water environment.
Present invention employs the sterilizing units for shrimp culture that above-mentioned technical proposal provides, and compensate for the prior art Deficiency, reasonable design, easy operation.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the present invention for the sterilizing unit of shrimp culture;
Fig. 2 is the top view of sieve of the present invention;
Fig. 3 is the structural schematic diagram that the present invention goes out pellet;
Fig. 4 is the structural schematic diagram of Manure collector of the present invention.
Description of symbols: 1 box for breeding;2U type feed inlet;3 motors;4 baffles;5 main shafts;6 stirring blades;7 active carbons Packet;8 elastic strings;9 go out pellet;9a shrinkage pool;9b discharge port;9c discharge pipe;9d material collecting tank;10 sieves;10a floating ball;10b cross Baffle;11 oxygen exhausts;12 oxygen pump;13 oxygen output pipes;14 Manure collectors;14a grid;The 14b string bag;14c collection colostomy bag;14d oscillator; 14e catch basin;15 inclined plates;16 suction pump a;17 drinking-water pipe a;18 suction pump b;19 drinking-water pipe b;20 control panels;21 batteries; 22 stainless steel tube bodies;23 germicidal tubes;24 brackets;25 supporting legs;26 degerming casees.
Specific embodiment
Present invention is further described in detail with attached drawing with reference to embodiments:
Embodiment 1:
As shown in Figs 1-4, for the sterilizing unit of shrimp culture, including box for breeding 1,1 middle part top of box for breeding offer it is U-shaped into Material mouth 2,1 bottom of box for breeding are equipped with Manure collector 14, oxygen output pipe 13 are equipped with above Manure collector 14, passes through drinking-water pipe on the right side of box for breeding 1 A17 connection bactericidal device, the middle part drinking-water pipe a17 are equipped with suction pump b18, and baffle 4,4 middle part of baffle are equipped with inside U-shaped feed inlet 2 Upper surface is equipped with motor 3, and the output end of motor 3 connects main shaft 5 by baffle 4, and 5 lower end of main shaft connects stirring blade 6, stirring Active charcoal bag 7 is equipped with inside blade 6.The present apparatus is multiple functional, and structure is simple, can cultivate various aquatic products, and cultivation water is cultivating Cultivation water can be pumped into sterilizing unit and sterilize transition, turn again to by the time longer activity that will affect aquatic products in case, suction pump In box for breeding, the active charcoal bag inside stirring blade can adsorb the impurity in water, while motor will drive stirring blade rotation, stir Dynamic water body increases the oxygen content in water, promotes the growth of shrimps.
13 surface of oxygen output pipe is evenly equipped with oxygen exhaust 11, and oxygen pump 12 is equipped on the left of oxygen output pipe 13, and oxygen pump 12 is located at cultivation 1 outside of case.When oxygen content in water deficiency, oxygen pump can give cultivation water fast oxygenation, prevent aquatic products anoxic from leading to large area Death reduces economic benefit.
It is equipped with sieve 10 above oxygen output pipe 13, is connected with floating ball 10a, each floating ball 10a between the grid inside sieve 10 Inside is equipped with cross baffle 10b.Sieve can stop shrimp to move about to box for breeding bottom, and shrimp is avoided to pierce Manure collector, in the middle part of sieve Floating ball can make sieve float up and down, and support entire sieve, improve the stability of sieve.
One end of elastic string 8 is connected on the side wall of box for breeding 1, the other end of elastic string 8 connects out pellet 9, out 9 table of pellet Face is evenly equipped with shrinkage pool 9a, and discharge port 9b is designed between each shrinkage pool 9a, and discharge port 9b passes through discharge pipe 9c connection material collecting tank 9d.Bait can be first collected into together by material collecting tank, when the aquatic products of shrimp or cultivation, which meets this, goes out pellet, the bait inside pellet out It will disperse in box for breeding, above-mentioned design can save bait, moreover it is possible to it prevents feeding from excessively concentrating and causes bait to eat up to sink to the bottom, it should Discharging ball in box for breeding has certain elasticity, and discharging ball surface is additionally provided with netted shrinkage pool, the pellet out when oxygen output pipe goes out oxygen It can slowly bounce, make often have fluctuation in water, to increase the contact surface of water and air, admit air into water, pellet is fallen back to out It can be allowed to constantly turn round at a slow speed using the shrinkage pool on surface and the fluctuation of water flow after in water, to increase the upheaval of water, water body can be made slow Slow flow, water oxygen ion can be increase accordingly, and bacterium colony frequent activities cause dissolved oxygen amount to increase, shrimp is made not have anoxia phenomenon.
Bactericidal device includes degerming case 26, and stainless steel tube body 22 is equipped with inside degerming case 26, is pacified inside stainless steel tube body 22 Equipped with germicidal tube 23,23 lower end connecting bracket 24 of germicidal tube, 23 upper end of germicidal tube connects control panel 20, control panel 20 middle parts are equipped with battery 21,26 bottom attachment support leg 25 of degerming case.It is initially entered into the intracorporal water of stainless steel tube stainless In the inner cavity of the left side of steel tube body, several seconds in stainless steel tube body, the process of stop will stay on during escaping up In, ultraviolet germicidal lamp dead can disintegrate in the bacterial virus several seconds in water to being irradiated, and disinfection effect is good, and And what can be continued carries out sterilizing to water, greatly improves work efficiency.Whole device structure is simple, and design rationally, is killed Bacterium Disinfection Effect is good, high-efficient, practical.
Germicidal tube 23 is honey comb structure, and germicidal tube 23 is movably connected with bracket 24.Germicidal tube and bracket are living Dynamic connection can ensure that can remove cleaning at once when there is dirt on germicidal tube surface, indirectly improve the service life of fluorescent tube.
Manure collector 14 includes grid 14a, and string bag 14b is connected below grid 14a, and string bag 14b outer layer is equipped with housing, the string bag It is equipped with collection colostomy bag 14c below 14b, oscillator 14d is installed inside collection colostomy bag 14c, catch basin 14e is housed on the outside of collection colostomy bag 14c.It should Collector can collect the excrement of biology, percent 80 or more residual bait, the pollution to water environment be reduced, after the excrement desiccation being collected simultaneously It is good fertilizer, and collection efficiency is high.
Embodiment 2:
The present apparatus is used for the sterilizing unit of shrimp culture in actual use: shrimp is put into box for breeding 1 and is cultivated, cultivation water In box for breeding the time it is longer will affect water quality, water pump b18 first enters water in the inner cavity of left side of stainless steel tube body 22, It will stay on the several seconds in stainless steel tube body 22 during escaping up, during stop, ultraviolet germicidal lamp 23 is to water Be irradiated, dead can disintegrate in the bacterial virus several seconds in water, bait can be first collected into together by material collecting tank 9d, when shrimp or When the aquatic products of cultivation meets this and goes out pellet, bait pellet 9 inside be will disperse in box for breeding out, when oxygen content in water is insufficient When, oxygen pump 12 can give cultivation water fast oxygenation, prevent aquatic products anoxic from leading to Large Scale Death.
Routine operation in above-described embodiment 1,2 is well known to those skilled in the art, herein without repeating.
Technical solution of the present invention is described in detail in above embodiment, it should be understood that the above is only the present invention Specific embodiment, be not intended to restrict the invention, all any modification, supplement or classes made in spirit of the invention It substitutes, should all be included in the protection scope of the present invention like mode.

Claims (7)

1. being used for the sterilizing unit of shrimp culture, including box for breeding (1), top offers U-shaped feed inlet in the middle part of box for breeding (1) (2), box for breeding (1) bottom is equipped with Manure collector (14), is equipped with oxygen output pipe (13) above Manure collector (14), logical on the right side of box for breeding (1) Cross drinking-water pipe a(17) connection bactericidal device, drinking-water pipe a(17) middle part be equipped with suction pump b(18), it is characterised in that: it is described it is U-shaped into Baffle (4) are equipped with inside material mouth (2), upper surface is equipped with the output end of motor (3) motor (3) in the middle part of the baffle (4) Main shaft (5) are connected by baffle (4), main shaft (5) lower end connects stirring blade (6), is equipped with inside the stirring blade (6) Active charcoal bag (7).
2. the sterilizing unit according to claim 1 for shrimp culture, it is characterised in that: oxygen output pipe (13) surface It is evenly equipped with oxygen exhaust (11), oxygen pump (12) is equipped on the left of the oxygen output pipe (13), the oxygen pump (12) is located at box for breeding (1) Outside.
3. the sterilizing unit according to claim 1 for shrimp culture, it is characterised in that: above the oxygen output pipe (13) It equipped with sieve (10), is connected with floating ball (10a) between the internal grid of the sieve (10), each floating ball (10a) is internal Equipped with cross baffle (10b).
4. the sterilizing unit according to claim 1 for shrimp culture, it is characterised in that: the side of the box for breeding (1) The one end of elastic string (8) is connected on wall, the other end of the elastic string (8) connects out pellet (9), described pellet (9) surface out It is evenly equipped with shrinkage pool (9a), is designed with discharge port (9b) between each shrinkage pool (9a), the discharge port (9b) passes through discharge nozzle Road (9c) connects material collecting tank (9d).
5. the sterilizing unit according to claim 1 for shrimp culture, it is characterised in that: the bactericidal device includes removing Bacterium case (26), the degerming case (26) is internal to be equipped with stainless steel tube body (22), is equipped with and kills inside the stainless steel tube body (22) Bacterium fluorescent tube (23), germicidal tube (23) the lower end connecting bracket (24), germicidal tube (23) upper end connect control panel (20), battery (21) are equipped in the middle part of the control panel (20), degerming case (26) the bottom attachment support leg (25).
6. the sterilizing unit according to claim 1 for shrimp culture, it is characterised in that: the germicidal tube (23) is Honey comb structure, the germicidal tube (23) are movably connected with bracket (24).
7. the sterilizing unit according to claim 1 for shrimp culture, it is characterised in that: the Manure collector (14) includes Grid (14a), grid (14a) lower section connect the string bag (14b), and the string bag (14b) outer layer is equipped with housing, the string bag It is equipped with collection colostomy bag (14c) below (14b), oscillator (14d) is installed inside the collection colostomy bag (14c), the collection colostomy bag (14c) is outside Side is equipped with catch basin (14e).
CN201810728643.6A 2018-07-05 2018-07-05 Sterilizing unit for shrimp culture Withdrawn CN109111016A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810728643.6A CN109111016A (en) 2018-07-05 2018-07-05 Sterilizing unit for shrimp culture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810728643.6A CN109111016A (en) 2018-07-05 2018-07-05 Sterilizing unit for shrimp culture

Publications (1)

Publication Number Publication Date
CN109111016A true CN109111016A (en) 2019-01-01

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CN201810728643.6A Withdrawn CN109111016A (en) 2018-07-05 2018-07-05 Sterilizing unit for shrimp culture

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109644931A (en) * 2019-01-11 2019-04-19 宁波大学 Opsariichthys bidens for transport temporarily support device
CN112062310A (en) * 2020-09-14 2020-12-11 张家港市康盛织染有限公司 Printing and dyeing wastewater cyclic treatment system
CN112293340A (en) * 2020-10-30 2021-02-02 田玮玮 Qi lian mountain naked carp is bred and uses oxygenating device
CN112624540A (en) * 2021-01-04 2021-04-09 钱程 Rural fishpond sludge treatment equipment
CN113519445A (en) * 2021-06-03 2021-10-22 刘福莲 Efficient pond water purifying device for artificial fish culture

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109644931A (en) * 2019-01-11 2019-04-19 宁波大学 Opsariichthys bidens for transport temporarily support device
CN112062310A (en) * 2020-09-14 2020-12-11 张家港市康盛织染有限公司 Printing and dyeing wastewater cyclic treatment system
CN112293340A (en) * 2020-10-30 2021-02-02 田玮玮 Qi lian mountain naked carp is bred and uses oxygenating device
CN112624540A (en) * 2021-01-04 2021-04-09 钱程 Rural fishpond sludge treatment equipment
CN113519445A (en) * 2021-06-03 2021-10-22 刘福莲 Efficient pond water purifying device for artificial fish culture

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Application publication date: 20190101