CN116138192A - A push pedal structure for fish egg hatching - Google Patents
A push pedal structure for fish egg hatching Download PDFInfo
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- CN116138192A CN116138192A CN202310230380.7A CN202310230380A CN116138192A CN 116138192 A CN116138192 A CN 116138192A CN 202310230380 A CN202310230380 A CN 202310230380A CN 116138192 A CN116138192 A CN 116138192A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 124
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/10—Culture of aquatic animals of fish
- A01K61/17—Hatching, e.g. incubators
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/10—Culture of aquatic animals of fish
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Zoology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses a push plate structure for hatching fish eggs, wherein the push plate is arranged along the cross section direction in a hatching groove and is provided with a plurality of through holes; the device is characterized in that the pushing plates are arranged in groups, and each group of pushing plates comprises a first pushing plate and a second pushing plate which are arranged at intervals. The invention has the advantages of better adjusting the water environment so as to improve the hatching effect of the fish eggs.
Description
The application is a divisional application of patent application No. 202111428480.8, application days 2021-11-29, namely a drifting fish egg hatching method.
Technical Field
The invention relates to the technical field of fish egg hatching and cultivation, in particular to a push plate structure for fish egg hatching.
Background
The drifted fish eggs are fish eggs which have similar density to water, are non-sticky, are separated from each other, are hatched in a state of drifted with water after insemination is produced, such as eggs produced by black carp, grass carp, silver carp, bighead carp and the like. The hatching process of the fish eggs has important significance for fish reproduction, and not only directly affects the number and health condition of the fries, but also affects the resource quantity and species survival condition of the fishes. The development of drifting fish eggs from fertilized eggs to young fish with swimming capability requires tens or even hundreds of hours of water migration, which can reach hundreds of kilometers in such natural bodies of water upstream of the Yangtze river. Therefore, the research on the incubation of the driftage fish eggs has important significance for the fish farming industry and has the same significance for the recovery of river fish resources.
At present, the artificial incubation mode of the drifting fish eggs mainly comprises incubation in an incubation barrel and incubation in an incubation loop. The hatching barrel is of an indefinite size, can be customized and used according to actual needs, generally adopts a mode of flushing water upwards from the bottom to enable fish eggs to continuously roll in water for hatching, has the advantage of simple operation, but the flow direction of water flow in the barrel is disordered, and the flow speed cannot be determined. The hatching loop has large capacity and good durability, and the working principle is that water flow is sprayed out through a plurality of nozzles in the same direction at the bottom in the loop, so that the fish eggs can be guaranteed to roll and float continuously in the loop, but the fish eggs cannot be guaranteed to be uniform everywhere and the turbulence degree of the water flow cannot be controlled.
For example, CN111670844a discloses a drifting fish egg hatching device, and CN210746713U discloses a drifting fish egg hatching device, which is similar to the above structure, i.e. a containing body is adopted, water is added or ventilation is performed, swirl is controlled to be caused in the containing body, and then fish eggs are controlled to hatch in water flow. The mode has the defects of low control degree of water flow and poor hatching effect. The environmental factors influencing the incubation of the driftage fish eggs include temperature, dissolved oxygen and the like, and more importantly, the flow rate and flow state of water flow. Therefore, in the fish egg hatching process, how to better simulate and obtain the water environment which is more beneficial to hatching, improve the hatching effect and become the problem to be further considered and solved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problems that: how to provide a drifting fish egg hatching method capable of better regulating the water environment so as to improve the fish egg hatching effect, and a push plate structure for fish egg hatching.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for incubating the drifted fish eggs includes such steps as putting the fish eggs in artificial water, controlling the water flow to make them in drifted state, and incubating.
Like this, through whole thrust messenger's circulation flow of exerting on the annular water course cross section, can simulate actual river course rivers better and be the characteristics that the rivers wholly flow forward in the cross section direction, the flow condition of rivers is more stable, even, does not have the dead angle, accords with the actual rivers condition of river course more, has improved the hatching effect to the roe.
Further, in the hatching process, the temperature of water flow is regulated and controlled to be at a proper temperature so as to realize hatching. So as to better improve the hatching effect. The appropriate temperature can be obtained in particular by measuring the actual hatching environment of the fish eggs or by experiments.
Further, in the hatching process, the oxygen content of the water flow is subjected to aeration adjustment, so that the water flow is hatched under a proper oxygen capacity. So as to better improve the hatching effect. The appropriate oxygen capacity can be obtained in particular by measuring the actual hatching environment of the fish eggs or by experiments.
Further, during the hatching process, the turbulence degree of the water flow is regulated so as to have enough turbulence amount and hatching is carried out. So as to better improve the hatching effect. The water turbulence measuring instrument can be obtained by measuring the actual hatching environment condition of the fish eggs or by experiments, and particularly can adopt parameters such as turbulence intensity, reynolds number or turbulence energy and the like as judging index parameters.
Further, the method is realized by adopting the fish egg hatching device which comprises a hatching groove which is horizontally and annularly arranged as a whole, wherein a push plate is arranged in the hatching groove along the cross section direction, and the push plate is connected with a circulating motion control mechanism and can be driven to circularly move along the annular shape of the hatching groove.
Like this, the push pedal is driven along the annular circulation motion of hatching groove, and follow the cross section direction and wholly promote rivers and do circulation motion in annular hatching inslot, can simulate the characteristics that rivers are whole forward flow in the cross section direction in the actual river course better, with the actual rivers condition in river course more coincide, rivers are more stable even, have improved the hatching effect of fish spawn.
Further, the hatching groove comprises two opposite semicircular sections and two straight line sections connected between the two semicircular sections, the circulating motion control mechanism comprises two transmission discs horizontally installed at the upper end positions of the inner circles of the two semicircular sections in a matched mode, a transmission belt is sleeved on each transmission disc, the upper end of the push plate is installed and connected on the transmission belt through a transversely arranged connecting rod, and at least one transmission disc is connected with a motor.
Therefore, the motor drives the transmission disc to rotate, and the push plate is driven by the transmission belt to circularly move along the hatching groove so as to push water flow to circularly flow. Meanwhile, the motor device is positioned above the hatching groove, so that adverse effects of motor vibration on fish egg hatching are avoided.
Further, the driving disc is a chain wheel, and the driving belt is a chain. Thus, the control is more reliable and accurate.
Further, the motor is fixed on a mounting frame of the portal frame structure. This better enables the fixation of the motor.
Further, a protective sleeve is arranged outside the motor. This can make it better waterproof.
Further, a downward supporting rod is arranged below the middle part of the transmission disc, and the transmission disc is rotatably arranged on the supporting rod. Thus, the support can be better realized, and the stability is ensured.
Further, a water inlet and a water outlet are arranged on the hatching groove. Thus, water can be more conveniently fed in and discharged out. When in use, the water inlet and the water outlet are both provided with a dense net, which can prevent loss of fish eggs. Meanwhile, the water inlet is connected with the water pump through the water inlet pipeline, so that water pumping and water inlet are facilitated.
Further, the hatching tank is integrally fixed on a mounting table. Thus, the operation and the observation are more convenient.
Further, the hatching groove is integrally made of transparent organic glass materials. Thus, the observation is more convenient, and the hardness and quality of the material can be ensured.
Further, a camera is arranged outside the hatching groove and just opposite to the hatching groove. This facilitates the observation and recording of hatching processes and data by means of the camera.
Further, the fish egg hatching device also comprises a control and regulation system, wherein the control and regulation system comprises a temperature control device and an aeration device which are arranged on the hatching tank; the device also comprises a temperature sensor and an oxygen dissolving amount detection sensor which are arranged in the hatching groove, and the temperature control device, the aeration device, the temperature sensor and the oxygen dissolving amount detection sensor are respectively connected with the control center.
Therefore, the control and regulation system can detect the water flow temperature and regulate the water temperature through the temperature control device, can detect the dissolved oxygen amount in water and control the dissolved oxygen concentration in water through the aeration device, so that the water flow temperature and the water temperature are in a range suitable for hatching, and the hatching effect is better improved.
Further, an adjusting groove is fixedly arranged outside one side of the hatching groove, a communication notch is formed between the adjusting groove and the hatching groove, so that the adjusting groove and the hatching groove are communicated, and the temperature control device and the aeration device are located in the adjusting groove.
Therefore, the influence of the temperature control device and the aeration device on the water body flowing and the fish egg hatching can be better reduced.
Further, the adjusting groove is positioned at the position of the turning position outside the hatching groove.
Thus, the water exchange inside the two is facilitated.
Further, the control and regulation system also comprises a water flow speed detection device, the water flow speed detection device is connected with a control center, and the control center is connected with a motor. In this way, the water flow velocity can be better detected and guaranteed to be the desired velocity.
Further, the front side surface of the push plate is provided with an elastic material layer.
In this way, the fish eggs can be better prevented from being damaged by impact.
Further, a plurality of through holes are formed in the push plate.
Therefore, partial water flow can flow through the through holes, the water disturbance degree of the adjacent area positions of the front side and the rear side of the push plate is reduced, the water environments of the front side and the rear side of the push plate and the rest area positions of the hatching groove are more consistent, and the stable hatching is facilitated. Meanwhile, turbulent flow is formed after the water flows through the through holes, so that the simulation of the actual water environment of the river channel is facilitated, and the improvement of the hatching rate of the fish eggs is facilitated.
Further, the push plate and the circulating motion control mechanism are detachably connected. Like this, can set up the push pedal of multiunit different through hole shapes, conveniently change the push pedal that has different shape through hole as required to adjust the water current disorder degree, make it more be favorable to improving the hatchability of roe. During the implementation, with each level in push pedal upper end one side and cyclic motion control mechanism's drive belt one side set up a screw thread symmetry's connecting screw rod, then rely on a matched coupling nut to realize dismantling the connection, have simple structure, connect convenient characteristics.
Further, the push plates are arranged in groups, and each group of push plates comprises a first push plate and a second push plate which are arranged at intervals.
Like this, rivers pass through the through hole in first push pedal and the second push pedal in proper order, and the double-deck through hole's that juxtaposes like this setting has greatly improved the fragmentation degree to the through water stream, has improved the turbulent flow degree of rivers under the circumstances that keeps the whole fluctuation range of water not big for the fish egg can follow the rivers better and do the higher but less drifting of range, more is favorable to fish egg hatching and does not harm the fish egg.
Further, a dislocation adjusting mechanism is arranged between the first pushing plate and the second pushing plate, and a turbulence adjusting device is formed.
Therefore, the adjustment of the dislocation distance of the through holes between the first push plate and the second push plate can be realized through the dislocation adjusting mechanism, and the adjustment of the turbulence degree forming turbulence is further realized. So that the fish egg hatching turbulence degree is more suitable for fish egg hatching.
Further, the dislocation adjusting mechanism comprises an adjusting screw rod vertically fixed on the first push plate and pointing to the second push plate, and the adjusting screw rod penetrates through a chute vertically arranged on the second push plate and clamps and fixes the second push plate on the adjusting screw rod by means of a pair of fixing nuts which are screwed.
Therefore, the adjusting screw rod can slide up and down along the chute and then be fastened again by loosening the fixing nut, and dislocation adjustment is realized by adjusting the height of the fixed position of the second push plate up and down; meanwhile, the structure can also realize the adjustment of the front-back distance between the two pushing plates, and the accurate adjustment of the turbulence degree forming turbulence can be better realized by adjusting the dislocation degree and the mutual distance. And has the characteristics of simple structure, convenient and quick adjustment, stability and reliability.
Further, a circle of backward flexible ribbon is arranged on the rear side of each through hole on the push plate.
Therefore, when the push plate pushes water flow forwards, a circle of flexible streamers formed by a plurality of the flexible streamers at the rear side of each through hole irregularly swings along the water flow, further drives the water flow passing through the through holes to randomly swing along with the flexible streamers around and diffuse to the back and the periphery of the gaps of the flexible streamers, so that the irregular fluctuation effect of the water flow passing through the through holes is further improved, the fluctuation amplitude is reduced, and the hatching of the fish eggs is more facilitated and the fish eggs are not damaged.
Further, the rear sides of the first push plate and the second push plate are respectively provided with a flexible ribbon, and the length of the flexible ribbon at the rear side of the first push plate is matched with (basically consistent with) the distance between the first push plate and the second push plate.
Like this, be located the flexible ribbon between first push pedal and the second push pedal not only can make the turbulent flow better, the flexible ribbon can be guided to the position of passing through the hole in the second push pedal in the wobbling in addition under the effect of rivers, and then the fish egg that the guide got into the first push pedal in the passing through hole flows out from the passing through hole in the second push pedal better, avoids striking the second push pedal and causes the damage.
Further, the device also comprises a particle image detection system, wherein the particle image detection system comprises a camera which is arranged right opposite to the hatching groove, a laser which is arranged right opposite to the camera shooting area of the camera on the hatching groove, a plurality of trace particles which are put into the water body in the hatching groove, and the laser is connected with the camera and the control center.
Therefore, the laser irradiates the water body in the shooting area, so that the tracer particles in the water body reflect light and can be shot into dynamic images by the camera, and then the flow field information can be obtained by shooting the image change condition of the tracer particles and performing image processing by a control center (computer). The turbulence degree of the water body can be directly reflected by depending on the fluctuation condition of the trace particles in the video. The three-dimensional velocity field of the tracer particles can be further obtained by analyzing flow field parameters, so that the turbulence intensity of the water flow of the tracer particles is obtained by calculation, and the data of the turbulence value of the detection point is obtained.
Further, the trace particle size and mass match the size and mass data of the roe (fall within the data range of the roe). Therefore, the fluctuation image condition of the trace particles can be better utilized to intuitively reflect the fluctuation condition of the fish eggs in the water body.
Further, the video camera is a CCD camera. And shooting and data conversion are facilitated.
Further, the laser has a laser light source facing the width direction of the hatching slot. The information of the trace particles in the image can be extracted more conveniently.
In conclusion, the fish egg hatching device has the advantages of being capable of better adjusting the water environment so as to improve the fish egg hatching effect.
Drawings
Fig. 1 is a schematic diagram of a fish egg hatching apparatus according to the present invention in a plan view.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is a sectional view of B-B of fig. 1.
Fig. 4 is a schematic diagram of the structure of the push plate in a side view.
FIG. 5 is a schematic illustration of multiple sets of push plates with different through hole shapes.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The specific embodiment is as follows: a method for hatching the driftage fish eggs features that the fish eggs are put in artificial water body, and the water body is controlled to flow to make them in driftage state for hatching.
Like this, through whole thrust messenger's circulation flow of exerting on the annular water course cross section, can simulate actual river course rivers better and be the characteristics that the rivers wholly flow forward in the cross section direction, the flow condition of rivers is more stable, even, does not have the dead angle, accords with the actual rivers condition of river course more, has improved the hatching effect to the roe.
In the hatching process of the method, the temperature of water flow is regulated and controlled to be at a proper temperature for hatching. So as to better improve the hatching effect. The appropriate temperature can be obtained in particular by measuring the actual hatching environment of the fish eggs or by experiments.
In the hatching process of the method, the oxygen content of water flow is subjected to aeration adjustment, so that the water flow is hatched under proper oxygen capacity. So as to better improve the hatching effect. The appropriate oxygen capacity can be obtained in particular by measuring the actual hatching environment of the fish eggs or by experiments.
In the hatching process of the method, the turbulence degree of the water flow is regulated so as to have enough turbulence amount and hatching is carried out. So as to better improve the hatching effect. The water turbulence measuring instrument can be obtained by measuring the actual hatching environment condition of the fish eggs or by experiments, and particularly can adopt parameters such as turbulence intensity, reynolds number or turbulence energy and the like as judging index parameters.
In this embodiment, the method is implemented by using a fish egg hatching apparatus shown in fig. 1 to 5, where the fish egg hatching apparatus includes a hatching tank 1 that is horizontally annular as a whole, a push plate 2 is disposed in the hatching tank 1 along the cross-section direction, and the push plate 2 is connected to a circulating motion control mechanism and can be driven to perform a circulating motion along the annular shape of the hatching tank.
Like this, the push pedal is driven along the annular circulation motion of hatching groove, and follow the cross section direction and wholly promote rivers and do circulation motion in annular hatching inslot, can simulate the characteristics that rivers are whole forward flow in the cross section direction in the actual river course better, with the actual rivers condition in river course more coincide, rivers are more stable even, have improved the hatching effect of fish spawn.
The hatching groove 1 comprises two opposite semicircular sections and two straight line sections connected between the two semicircular sections, the circulating motion control mechanism comprises two transmission discs 3 horizontally installed at the upper end positions of the inner circles of the two semicircular sections in a matched mode, a transmission belt 4 is sleeved on each transmission disc 3, the upper end of the push plate 2 is installed and connected on the transmission belt through a transversely arranged connecting rod, and at least one transmission disc 3 is connected with a motor 6.
Therefore, the motor drives the transmission disc to rotate, and the push plate is driven by the transmission belt to circularly move along the hatching groove so as to push water flow to circularly flow. Meanwhile, the motor device is positioned above the hatching groove, so that adverse effects of motor vibration on fish egg hatching are avoided.
Wherein, the driving disc 3 is a chain wheel, and the driving belt 4 is a chain. Thus, the control is more reliable and accurate.
Wherein the motor 6 is fixed to a mounting frame 7 of a gantry structure. This better enables the fixation of the motor.
Wherein, the motor 6 is provided with a protective sleeve. This can make it better waterproof.
Wherein, the transmission disk 3 is provided with downward bracing piece 8 below the middle part, and the transmission disk is rotatably installed on the bracing piece. Thus, the support can be better realized, and the stability is ensured.
Wherein, the hatching groove 1 is provided with a water inlet 9 and a water outlet 10. Thus, water can be more conveniently fed in and discharged out. When in use, the water inlet and the water outlet are both provided with a dense net, which can prevent loss of fish eggs. Meanwhile, the water inlet is connected with the water pump 11 through a water inlet pipeline, so that water pumping and water inlet are facilitated.
Wherein the hatching tank 1 is integrally fixed to a mounting table 12. Thus, the operation and the observation are more convenient.
Wherein, the hatching groove 1 is integrally made of transparent organic glass material. Thus, the observation is more convenient, and the hardness and quality of the material can be ensured.
Wherein, the hatching groove 1 is also provided with a camera 13 opposite to the hatching groove. This facilitates the observation and recording of hatching processes and data by means of the camera.
The fish egg hatching device also comprises a control and regulation system, wherein the control and regulation system comprises a temperature control device 14 and an aeration device 15 which are arranged on the hatching tank; and a temperature sensor and a dissolved oxygen amount detection sensor (not shown) which are arranged in the hatching tank, wherein the temperature control device 14 and the aeration device 15 as well as the temperature sensor and the dissolved oxygen amount detection sensor are respectively connected with a control center (not shown).
Therefore, the control and regulation system can detect the water flow temperature and regulate the water temperature through the temperature control device, can detect the dissolved oxygen amount in water and control the dissolved oxygen concentration in water through the aeration device, so that the water flow temperature and the water temperature are in a range suitable for hatching, and the hatching effect is better improved. The temperature control device and the aeration device are themselves existing mature products, and the structure thereof is not described in detail here.
Wherein, the outside of hatching groove 1 one side still fixedly is provided with an adjustment tank 16, is provided with the intercommunication breach between adjustment tank 16 and the hatching groove and makes the inside intercommunication of two, temperature control device 14 and aeration equipment 15 are located adjustment tank 16.
Therefore, the influence of the temperature control device and the aeration device on the water body flowing and the fish egg hatching can be better reduced.
Wherein the adjusting groove 16 is positioned at the outer turning position of the hatching groove 1.
Thus, the water exchange inside the two is facilitated.
The control and regulation system further comprises a water flow speed detection device (not shown in the figure), wherein the water flow speed detection device is connected with the control center, and the control center is connected with the motor. In this way, the water flow velocity can be better detected and guaranteed to be the desired velocity. In the implementation, the water flow speed detection device can be directly installed in the hatching tank for measurement, or an independent water speed measuring instrument can be adopted, when the water speed needs to be detected, a plurality of measuring points can be taken in the hatching tank, for example, one measuring point (four points of ABCD in the figure) is respectively taken in two arc sections and in the middle of two straight line sections, then the water flow speed is directly obtained by holding the water speed measuring instrument to each measuring point for detecting the flow speed, and then the average flow speed is calculated. Thus, the interference of the water flow speed detection device to the water flow can be avoided.
Wherein the front surface of the push plate 2 is provided with a layer 21 of an elastic material.
In this way, the fish eggs can be better prevented from being damaged by impact.
Wherein the push plate is provided with a plurality of through holes 22.
Therefore, partial water flow can flow through the through holes, the water disturbance degree of the adjacent area positions of the front side and the rear side of the push plate is reduced, the water environments of the front side and the rear side of the push plate and the rest area positions of the hatching groove are more consistent, and the stable hatching is facilitated. Meanwhile, turbulent flow is formed after the water flows through the through holes, so that the simulation of the actual water environment of the river channel is facilitated, and the improvement of the hatching rate of the fish eggs is facilitated.
Wherein the push plate 2 is detachably connected with the circulating motion control mechanism. Like this, can set up the push pedal of multiunit different through hole shapes (see fig. 5), conveniently change the push pedal that has different shape through hole as required to adjust the water disturbance degree, make it more be favorable to improving the hatchability of roe. During the implementation, with each level in push pedal upper end one side and cyclic motion control mechanism's drive belt one side set up a screw thread symmetry's connecting screw rod, then rely on a matched coupling nut to realize dismantling the connection, have simple structure, connect convenient characteristics.
Wherein the push plates 2 are arranged in groups, and each group of push plates comprises a first push plate 23 and a second push plate 24 which are arranged at intervals.
Like this, rivers pass through the through hole in first push pedal and the second push pedal in proper order, and the double-deck through hole's that juxtaposes like this setting has greatly improved the fragmentation degree to the through water stream, has improved the turbulent flow degree of rivers under the circumstances that keeps the whole fluctuation range of water not big for the fish egg can follow the rivers better and do the higher but less drifting of range, more is favorable to fish egg hatching and does not harm the fish egg.
Wherein, a dislocation adjusting mechanism is arranged between the first pushing plate 23 and the second pushing plate 24, and a turbulence adjusting device is formed.
Therefore, the adjustment of the dislocation distance of the through holes between the first push plate and the second push plate can be realized through the dislocation adjusting mechanism, and the adjustment of the turbulence degree forming turbulence is further realized. So that the fish egg hatching turbulence degree is more suitable for fish egg hatching.
The dislocation adjusting mechanism comprises an adjusting screw rod 25 vertically fixed on the first push plate and pointing to the second push plate, and the adjusting screw rod penetrates through a chute vertically arranged on the second push plate and clamps and fixes the second push plate on the adjusting screw rod by means of a pair of fixing nuts 26 which are screwed.
Therefore, the adjusting screw rod can slide up and down along the chute and then be fastened again by loosening the fixing nut, and dislocation adjustment is realized by adjusting the height of the fixed position of the second push plate up and down; meanwhile, the structure can also realize the adjustment of the front-back distance between the two pushing plates, and the accurate adjustment of the turbulence degree forming turbulence can be better realized by adjusting the dislocation degree and the mutual distance. And has the characteristics of simple structure, convenient and quick adjustment, stability and reliability.
Wherein a circle of backward flexible streamers 27 are arranged on the rear side of each through hole on the push plate 2.
Therefore, when the push plate pushes water flow forwards, a circle of flexible streamers formed by a plurality of the flexible streamers at the rear side of each through hole irregularly swings along the water flow, further drives the water flow passing through the through holes to randomly swing along with the flexible streamers around and diffuse to the back and the periphery of the gaps of the flexible streamers, so that the irregular fluctuation effect of the water flow passing through the through holes is further improved, the fluctuation amplitude is reduced, and the hatching of the fish eggs is more facilitated and the fish eggs are not damaged.
Wherein the rear sides of the first push plate 23 and the second push plate 24 are provided with flexible streamers 27, and the length of the flexible streamers at the rear side of the first push plate is matched (substantially consistent) with the distance between the first push plate and the second push plate.
Like this, be located the flexible ribbon between first push pedal and the second push pedal not only can make the turbulent flow better, the flexible ribbon can be guided to the position of passing through the hole in the second push pedal in the wobbling in addition under the effect of rivers, and then the fish egg that the guide got into the first push pedal in the passing through hole flows out from the passing through hole in the second push pedal better, avoids striking the second push pedal and causes the damage.
The particle image detection system comprises a camera 13 which is opposite to the hatching groove, a laser 29 which is opposite to the camera shooting area on the hatching groove, a plurality of trace particles 30 which are thrown into the water body in the hatching groove, and the laser is connected with the camera and the control center. Reference numeral 31 in the figure indicates fish eggs.
Therefore, the laser irradiates the water body in the shooting area, so that the tracer particles in the water body reflect light and can be shot into dynamic images by the camera, and then the flow field information can be obtained by shooting the image change condition of the tracer particles and performing image processing by a control center (computer). The turbulence degree of the water body can be directly reflected by depending on the fluctuation condition of the trace particles in the video. The three-dimensional velocity field of the tracer particles can be further obtained by analyzing flow field parameters, so that the turbulence intensity of the water flow of the tracer particles is obtained by calculation, and the data of the turbulence value of the detection point is obtained.
Taking an E point opposite to a camera in a shooting area in the figure as an example, changing the point to be a turbulence degree measuring point, setting the height from the bottom of a water tank to be 0.5h (h is water depth), obtaining a trace particle image by using a particle image detection system, calculating a two-dimensional flow field by using post-processing software PIVlab in a computer of a control center, and obtaining a time average flow velocity in the x direction of the E point
Instantaneous flow rate u x Pulsating flow rate u x ' the same applies to the y direction, and finally, the turbulence intensity sigma at the x and y directions of the E point can be calculated x 、σ y And obtaining a turbulence k value at the E point. The physical quantity relation is as follows:
in the above formula:
u x 、u x ' time average flow rate in x direction, instantaneous flow rate, pulsating flow rate, +.>
u y 、u y ' is the time average flow velocity, instantaneous flow velocity, pulsating flow velocity, sigma in the y-direction x 、σ y The turbulence intensity in the x and y directions is n is the number of instantaneous flow fields, and the turbulence k value can comprehensively measure the turbulence degree of water flow in the water tank.
The trace particle 30 size and mass in this example matches the size and mass data of the roe 31 (falls within the data range of the roe). The outer surface of the trace particles 30 is provided with a layer of colour or light reflective material to facilitate tracking. Therefore, the fluctuation image condition of the trace particles can be better utilized to intuitively reflect the fluctuation condition of the fish eggs in the water body.
The camera 13 is a CCD camera. And shooting and data conversion are facilitated.
Wherein the laser 29 has a laser light source facing the width direction of the hatching chamber. The information of the trace particles in the image can be extracted more conveniently.
Claims (8)
1. A push plate structure for hatching fish eggs, wherein the push plate is arranged along the cross section direction in a hatching groove, and a plurality of through holes are formed in the push plate; the device is characterized in that the pushing plates are arranged in groups, and each group of pushing plates comprises a first pushing plate and a second pushing plate which are arranged at intervals.
2. A push plate structure for hatching fish eggs as claimed in claim 1, wherein the front surface of the push plate is provided with a layer of elastic material.
3. A push plate structure for fish egg hatching as claimed in claim 1, wherein the push plate and the circulation movement control mechanism are detachably connected.
4. A push plate structure for fish egg hatching as claimed in claim 3, wherein the upper end side of the push plate and the side of the driving belt of the circulating motion control mechanism are horizontally provided with a screw-thread symmetrical connecting screw respectively, and then the detachable connection is realized by means of a matched connecting nut.
5. A push plate structure for hatching fish eggs as claimed in claim 1, wherein a dislocation adjusting mechanism is provided between the first push plate and the second push plate and forms a turbulence adjusting means.
6. A push plate structure for fish egg hatching as claimed in claim 5, wherein: the dislocation adjusting mechanism comprises an adjusting screw rod vertically fixed on the first push plate and pointing to the second push plate, and the adjusting screw rod penetrates through a chute vertically arranged on the second push plate and clamps and fixes the second push plate on the adjusting screw rod by means of a pair of fixing nuts which are screwed.
7. A push plate structure for hatching fish eggs as claimed in claim 1, wherein the push plate is provided with a series of backward flexible bands rearwardly of the rear side of each passage hole.
8. The pusher plate structure for hatching fish eggs of claim 7, wherein the rear sides of the first pusher plate and the second pusher plate are each provided with a flexible streamer, and the length of the flexible streamer at the rear side of the first pusher plate is matched with the interval between the first pusher plate and the second pusher plate.
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Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0285457A1 (en) * | 1987-04-03 | 1988-10-05 | Edmund Michael Brooke | A method and apparatus for shellfish culture |
| JPH0686458U (en) * | 1993-06-07 | 1994-12-20 | 省吾 菊地 | Shellfish breeding equipment for circulating water tanks |
| JP2866367B1 (en) * | 1998-02-17 | 1999-03-08 | 下田機工株式会社 | Interceptor |
| JPH11206261A (en) * | 1998-01-26 | 1999-08-03 | Guppy:Kk | Continuous incubating apparatus for aquatic animal |
| US20030106499A1 (en) * | 2001-07-06 | 2003-06-12 | Hiroshi Yamada | Aquatic animal incubation device |
| JP2005218970A (en) * | 2004-02-05 | 2005-08-18 | Fuji Koatsu Concrete Kk | Water purification channel system |
| AU2007100340A4 (en) * | 2006-05-11 | 2007-05-24 | Shou-Te Chen | Float Structure |
| CN101278658A (en) * | 2008-05-20 | 2008-10-08 | 兴城桃花岛海产品有限公司 | Facilities for culturing trepang |
| JP3150213U (en) * | 2008-10-31 | 2009-05-07 | 北海道 | Artificial hatching breeding tank containing naturally floating fish eggs |
| KR200446430Y1 (en) * | 2009-04-06 | 2009-10-28 | 이연호 | Water Treatment Apparatus With Turbulence Generator |
| CN101836604A (en) * | 2010-05-04 | 2010-09-22 | 苏州市未来水产养殖场 | Chinese carp spawn incubation equipment |
| CN103756874A (en) * | 2014-01-21 | 2014-04-30 | 江西师范大学 | Alga cultivation device with indoor controllable cultivation condition |
| CN104663546A (en) * | 2015-03-10 | 2015-06-03 | 西北农林科技大学 | Water circulation system of fish hatcher |
| CN107156004A (en) * | 2017-06-01 | 2017-09-15 | 中国水利水电科学研究院 | A kind of fish-egg exercise test tank system |
| CN207476684U (en) * | 2017-11-02 | 2018-06-12 | 深圳大学 | It is a kind of can oxygenation aquaculture device |
| CN207567737U (en) * | 2017-12-04 | 2018-07-03 | 兰州理工大学 | Fish pass |
| CN208308482U (en) * | 2018-04-28 | 2019-01-01 | 孙启国 | For improving the reaction chamber of electrochemical descaling rate sterilizing rate |
| CN209120988U (en) * | 2018-12-07 | 2019-07-19 | 重庆交通大学 | It is a kind of that platform is incubated based on the ecological floatability stickiness fish-egg production remolded |
| CN209135129U (en) * | 2018-12-03 | 2019-07-23 | 内江师范学院 | A kind of drift roe hatching device |
| CN111357688A (en) * | 2020-03-24 | 2020-07-03 | 浙江省海洋水产养殖研究所 | Fish egg collecting and separating assembly device and collecting method |
| CN112931371A (en) * | 2021-01-29 | 2021-06-11 | 重庆工程职业技术学院 | Fishpond self-purification system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4080929A (en) * | 1976-09-07 | 1978-03-28 | Millnitz Ronald W | Method and apparatus for brooding fish |
| CN105052789A (en) * | 2015-07-31 | 2015-11-18 | 常州市金坛区直溪镇农业综合服务站 | Hatching device capable of improving fry hatching survival rate |
| CN107173283B (en) * | 2017-07-19 | 2020-09-25 | 信阳农林学院 | Device for hatching roes of fishes in Xenocyprinae and use method thereof |
| CN107646752B (en) * | 2017-08-18 | 2020-02-14 | 水利部交通运输部国家能源局南京水利科学研究院 | Experimental device and experimental method for researching quantitative relation between parent fish spawning and flow velocity stimulation |
| CN207589849U (en) * | 2017-09-28 | 2018-07-10 | 济南三峰益农农业科技有限公司 | A kind of extension egg hatching culture pond |
| NO344204B1 (en) * | 2018-09-03 | 2019-10-14 | Sval Aqua As | Hatching Box |
| CN211407268U (en) * | 2019-11-25 | 2020-09-04 | 湖南海博水产种业科技有限公司 | Oval fry hatching loop for four major Chinese carps |
| CN214339433U (en) * | 2021-01-12 | 2021-10-08 | 中国水产科学研究院长江水产研究所 | Roe drifting characteristic observation device |
| CN113519418B (en) * | 2021-08-16 | 2022-12-13 | 华中农业大学 | Controllable incubation device of drifting fish egg |
-
2021
- 2021-11-29 CN CN202111428480.8A patent/CN113951185B/en active Active
- 2021-11-29 CN CN202310230380.7A patent/CN116138192B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0285457A1 (en) * | 1987-04-03 | 1988-10-05 | Edmund Michael Brooke | A method and apparatus for shellfish culture |
| JPH0686458U (en) * | 1993-06-07 | 1994-12-20 | 省吾 菊地 | Shellfish breeding equipment for circulating water tanks |
| JPH11206261A (en) * | 1998-01-26 | 1999-08-03 | Guppy:Kk | Continuous incubating apparatus for aquatic animal |
| JP2866367B1 (en) * | 1998-02-17 | 1999-03-08 | 下田機工株式会社 | Interceptor |
| US20030106499A1 (en) * | 2001-07-06 | 2003-06-12 | Hiroshi Yamada | Aquatic animal incubation device |
| JP2005218970A (en) * | 2004-02-05 | 2005-08-18 | Fuji Koatsu Concrete Kk | Water purification channel system |
| AU2007100340A4 (en) * | 2006-05-11 | 2007-05-24 | Shou-Te Chen | Float Structure |
| CN101278658A (en) * | 2008-05-20 | 2008-10-08 | 兴城桃花岛海产品有限公司 | Facilities for culturing trepang |
| JP3150213U (en) * | 2008-10-31 | 2009-05-07 | 北海道 | Artificial hatching breeding tank containing naturally floating fish eggs |
| KR200446430Y1 (en) * | 2009-04-06 | 2009-10-28 | 이연호 | Water Treatment Apparatus With Turbulence Generator |
| CN101836604A (en) * | 2010-05-04 | 2010-09-22 | 苏州市未来水产养殖场 | Chinese carp spawn incubation equipment |
| CN103756874A (en) * | 2014-01-21 | 2014-04-30 | 江西师范大学 | Alga cultivation device with indoor controllable cultivation condition |
| CN104663546A (en) * | 2015-03-10 | 2015-06-03 | 西北农林科技大学 | Water circulation system of fish hatcher |
| CN107156004A (en) * | 2017-06-01 | 2017-09-15 | 中国水利水电科学研究院 | A kind of fish-egg exercise test tank system |
| CN207476684U (en) * | 2017-11-02 | 2018-06-12 | 深圳大学 | It is a kind of can oxygenation aquaculture device |
| CN207567737U (en) * | 2017-12-04 | 2018-07-03 | 兰州理工大学 | Fish pass |
| CN208308482U (en) * | 2018-04-28 | 2019-01-01 | 孙启国 | For improving the reaction chamber of electrochemical descaling rate sterilizing rate |
| CN209135129U (en) * | 2018-12-03 | 2019-07-23 | 内江师范学院 | A kind of drift roe hatching device |
| CN209120988U (en) * | 2018-12-07 | 2019-07-19 | 重庆交通大学 | It is a kind of that platform is incubated based on the ecological floatability stickiness fish-egg production remolded |
| CN111357688A (en) * | 2020-03-24 | 2020-07-03 | 浙江省海洋水产养殖研究所 | Fish egg collecting and separating assembly device and collecting method |
| CN112931371A (en) * | 2021-01-29 | 2021-06-11 | 重庆工程职业技术学院 | Fishpond self-purification system |
Non-Patent Citations (3)
| Title |
|---|
| 刘雪飞等: "漂流性鱼卵安全漂流的临界水动力条件实验研究", 《水利学报》, vol. 49, no. 4, 23 April 2018 (2018-04-23), pages 501 - 510 * |
| 吕仕洪等: "提早孵化鱼苗的自动化设备", 《水产科学》, no. 4, 1 May 1987 (1987-05-01), pages 1 - 3 * |
| 房欣: "一种基于生态重塑的黏性鱼卵产孵平台", 《冶金与材料》, vol. 38, no. 6, 15 December 2018 (2018-12-15), pages 83 * |
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| CN113951185A (en) | 2022-01-21 |
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