CN113951187B - Drifting fish egg embryo body development test device - Google Patents
Drifting fish egg embryo body development test device Download PDFInfo
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- CN113951187B CN113951187B CN202111431239.0A CN202111431239A CN113951187B CN 113951187 B CN113951187 B CN 113951187B CN 202111431239 A CN202111431239 A CN 202111431239A CN 113951187 B CN113951187 B CN 113951187B
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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
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/003—Aquaria; Terraria
-
- 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
- A01K63/003—Aquaria; Terraria
- A01K63/006—Accessories for aquaria or terraria
-
- 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
-
- 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
-
- 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
- A01K63/06—Arrangements for heating or lighting in, or attached to, receptacles for live fish
- A01K63/065—Heating or cooling devices
-
- 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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- Biodiversity & Conservation Biology (AREA)
- Zoology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses a drifting fish egg embryo development test device which comprises a hatching accommodating body, wherein a water flow rate control device, a water temperature control device and a water oxygen content control device are arranged in the hatching accommodating body, and a turbulence adjusting device is also arranged in the hatching accommodating body. The invention can better study the influence of the turbulence degree of the water flow on the development process of the drifting fish egg embryo body so as to better back feed the field of artificial incubation of the fish eggs and improve the incubation quality and the incubation success rate of the fish eggs.
Description
Technical Field
The invention relates to the technical field of fish egg hatching research, in particular to a drifting fish egg embryo development test device.
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 turbulence condition of the fish eggs cannot be determined. In the artificial hatching process of the existing drifted fish eggs, after the fish eggs are controlled to be in a drifted state, the fish eggs are usually more beneficial to hatching by controlling the water temperature, the oxygen content and the flow rate. 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-mentioned technology, namely, a containing body is adopted, water is added or ventilation is performed, the interior is controlled to generate rotational flow, 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. Because most of water flow in natural rivers is turbulent, fish eggs hatch and develop, besides water temperature, flow rate and content, the water flow turbulence and turbulence degree are related, and the difference of turbulence degree inevitably leads to the difference of embryo development conditions.
Therefore, in order to better study the influence of water flow conditions on the development process of the drifting fish egg embryo, the applicant considers that under the condition of controlling three parameter factors of the temperature of the water body, the oxygen content of the water body and the flow rate of the water body, tests are carried out by adjusting the water body to be in different turbulence degrees so as to study the effect of the turbulence degree of the water flow on the development of the fish egg embryo. However, a set of test equipment capable of better realizing the turbulent research test process is also required to be designed, and the device has the characteristics of convenient operation, reliable control and small damage to the fish eggs. The influence of the turbulence degree of the water flow on the development process of the driftable roe embryo is better explored, the field of artificial hatching of the back-fed roe is improved, and the quality and the success rate of hatching the roe are improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problems that: the device for testing the development of the drifting fish egg embryo body can better realize the research and test process of the turbulence of the water flow, so as to better explore the influence of the turbulence degree of the water flow on the development process of the drifting fish egg embryo body, has the characteristics of convenient operation, reliable control and small damage to the fish egg, can better reverse feed the field of artificial incubation of the fish egg, and improves the incubation quality and the incubation success rate of the fish egg.
In order to solve the technical problems, the invention adopts the following technical scheme:
the drifting fish egg embryo development test device comprises a hatching accommodating body, wherein a water flow rate control device, a water temperature control device and a water oxygen content control device are arranged in the hatching accommodating body, and a turbulence adjusting device is also arranged in the hatching accommodating body.
Thus, an artificial water body environment for hatching can be formed in the accommodating body for hatching in the test device, the flow of an artificial water body can be controlled by the water body flow rate control device, the temperature of the water body can be regulated and controlled by the water body temperature control device, and the oxygen content of the water body can be regulated and controlled by the water body oxygen content control device; and simultaneously, the turbulence flow of the water body is regulated by the turbulence regulating device, and different turbulence degrees are obtained. Therefore, the following fish egg hatching test process can be conveniently and rapidly realized, and the optimal turbulence degree for fish egg hatching is obtained. The fish egg hatching test process comprises the following steps: placing the fish eggs in an artificial water body environment, controlling the water body to flow so that the fish eggs are in a drifting state and are hatched, controlling the water body temperature to be proper temperature and/or controlling the water body oxygen content to be proper oxygen content and/or controlling the water body flow rate to be proper flow rate in the process of hatching the fish eggs, controlling the water body to be in different turbulence degrees, observing and recording the movement and hatching conditions of the fish eggs in the water body, and obtaining the optimal turbulence degree for hatching the fish eggs.
The fish roe is drifted fish roe. The values of the three factors, namely the proper temperature, the proper oxygen content and the proper flow rate, can be obtained by consulting the prior literature records or by additional tests or can be obtained according to the actual river channel condition measurement of the drifting fish eggs. After one factor or two factors or three factors can be confirmed at will, the hatching conditions of the fish eggs under the condition of different turbulence degrees are obtained through a grouping test, and the optimal turbulence degree for hatching the fish eggs is obtained. Wherein the optimal hatching can be the shortest hatching time, or the optimal vitality of the hatched fries, or the combination of the two. The degree of turbulence can be characterized by observing and measuring parameters such as the turbulence intensity or the turbulence value or the Reynolds number of the water body. Therefore, the device can be used for researching and obtaining the optimal water turbulence degree for fish egg hatching, and can better back feed the field of artificial fish egg hatching and improve the fish egg hatching quality and hatching success rate.
Further, the turbulence adjusting device comprises a plurality of groups of push plates with different-shaped through holes, and the push plates are detachably arranged in the hatching accommodating body along the vertical direction and can be used for pushing the hatching accommodating body water body to flow.
Thus, the water flow disturbance degree can be conveniently adjusted by replacing the push plate with the through holes in different shapes.
Further, the hatching containing body is a hatching groove which is horizontally annular as a whole, a push plate is arranged in the hatching groove along the cross section direction, the push plate is connected with the circulating motion control mechanism and can be driven to do circulating motion along the annular shape of the hatching groove, and the push plate and the circulating motion control mechanism form a water flow rate control device.
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, and the actual rivers condition in river course is more in line with, and rivers are more stable even, and convenient experimental going on has improved the hatching effect of fish egg.
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 water temperature control device comprises a temperature control device arranged on the hatching groove and a temperature sensor arranged in the hatching groove, and the temperature control device is connected with the temperature sensor and the control center; the water oxygen content control device comprises an aeration device arranged in the hatching tank, and also comprises a dissolved oxygen content detection sensor arranged in the hatching tank, wherein the aeration device and the dissolved oxygen content detection sensor are respectively connected with the control center.
Therefore, the water flow temperature can be better detected, the water temperature can be adjusted through the temperature control device, the dissolved oxygen amount in water can be detected, the dissolved oxygen concentration in water can be controlled through the aeration device, the water flow temperature and the dissolved oxygen concentration are in a range suitable for hatching, the test can be better realized, and the hatching effect can be 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 water flow rate control device also comprises a water flow rate detection device, the water flow rate 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.
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 invention can better study the influence of the turbulence degree of the water flow on the development process of the driftage roe embryo body, so as to better feed the roe artificial hatching field, and improve the quality and success rate of the roe hatching.
Drawings
FIG. 1 is a schematic diagram showing the structure of a device for testing the development of a drifting fish egg embryo in the present invention from a top 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: 1-5, the drifting fish egg embryo development test device comprises a hatching accommodating body, wherein a water flow rate control device, a water temperature control device and a water oxygen content control device are arranged in the hatching accommodating body, and a turbulence adjusting device is further arranged in the hatching accommodating body.
Thus, an artificial water body environment for hatching can be formed in the accommodating body for hatching in the test device, the flow of an artificial water body can be controlled by the water body flow rate control device, the temperature of the water body can be regulated and controlled by the water body temperature control device, and the oxygen content of the water body can be regulated and controlled by the water body oxygen content control device; and simultaneously, the turbulence flow of the water body is regulated by the turbulence regulating device, and different turbulence degrees are obtained. Therefore, the following fish egg hatching test process can be conveniently and rapidly realized, and the optimal turbulence degree for fish egg hatching is obtained. The fish egg hatching test process comprises the following steps: placing the fish eggs in an artificial water body environment, controlling the water body to flow so that the fish eggs are in a drifting state and are hatched, controlling the water body temperature to be proper temperature and/or controlling the water body oxygen content to be proper oxygen content and/or controlling the water body flow rate to be proper flow rate in the process of hatching the fish eggs, controlling the water body to be in different turbulence degrees, observing and recording the movement and hatching conditions of the fish eggs in the water body, and obtaining the optimal turbulence degree for hatching the fish eggs.
Wherein, the hatching is with the holding body for the hatching for a whole hatching groove 1 that is the level annular, is provided with push pedal 2 along the cross section direction in the hatching groove 1, and push pedal 2 and circulation motion control mechanism link to each other and can be driven along the annular of hatching groove and do circulation motion, and push pedal and circulation motion control mechanism constitute water velocity of flow controlling means.
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, and the actual rivers condition in river course is more in line with, and rivers are more stable even, and convenient experimental going on has improved the hatching effect of fish egg.
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 water temperature control device comprises a temperature control device 14 arranged on the hatching groove and a temperature sensor (not shown in the figure) arranged in the hatching groove, wherein the temperature control device 14 is connected with the temperature sensor and a control center (not shown in the figure); the water oxygen content control device comprises an aeration device 15 arranged in the hatching tank, and also comprises a dissolved oxygen content detection sensor (not shown in the figure) arranged in the hatching tank, wherein the aeration device and the dissolved oxygen content detection sensor are respectively connected with a control center.
Therefore, the water flow temperature can be better detected, the water temperature can be adjusted through the temperature control device, the dissolved oxygen amount in water can be detected, the dissolved oxygen concentration in water can be controlled through the aeration device, the water flow temperature and the dissolved oxygen concentration are in a range suitable for hatching, the test can be better realized, and the hatching effect can be improved. The temperature control device, the aeration device, the temperature sensor and the dissolved oxygen amount detection sensor are all existing mature products, and the structures of the temperature control device, the aeration device, the temperature sensor and the dissolved oxygen amount detection sensor are not described in detail herein.
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 water flow rate control device also comprises a water flow rate detection device (not shown in the figure), wherein the water flow rate 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
x 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:
u x =
x +u x ’
u y =
y +u y ’
in the above formula:
x 、u x 、u x ' time average flow rate in x direction, instantaneous flow rate, pulsating flow rate, +.>
y 、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 (9)
1. The drifting fish egg embryo development test device comprises a hatching accommodating body, wherein a water flow rate control device, a water temperature control device and a water oxygen content control device are arranged in the hatching accommodating body;
the turbulence adjusting device comprises a plurality of groups of push plates with different-shaped through holes, and the push plates are detachably arranged in the hatching accommodating body along the vertical direction and can be used for pushing the hatching accommodating body to flow in water;
the push plate is provided with a plurality of through holes;
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 front and back;
a dislocation adjusting structure is arranged between the first pushing plate and the second pushing plate, and a turbulence adjusting device is formed;
the dislocation adjusting structure 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.
2. The drifting fish egg embryo development test device according to claim 1 wherein the hatching container is a hatching tank which is horizontally and circularly formed as a whole, a push plate is arranged in the hatching tank along the cross section direction, the push plate is connected with the circulating motion control mechanism and can be driven to circularly move along the ring shape of the hatching tank, and the push plate and the circulating motion control mechanism form a water flow rate control device.
3. The drifting fish egg embryo development test device according to claim 2 wherein the hatching tank comprises two opposite semicircular segments and two straight segments connected between the two semicircular segments, the circulating motion control mechanism comprises two driving disks horizontally installed at the upper end position of the inner circle of the two semicircular segments in a matched manner, a driving belt is sleeved on the driving disks, the upper end of the push plate is installed and connected on the driving belt through a connecting rod which is transversely arranged, and at least one driving disk is connected with one motor.
4. A drifting fish egg embryo development test device according to claim 3 wherein the drive disc is a sprocket and the drive belt is a chain;
the motor is fixed on a mounting frame of a portal frame structure;
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.
5. The drifting fish egg embryo development test device according to claim 3 wherein a water inlet and a water outlet are provided on the hatching tank;
the hatching groove is integrally fixed on an installation table;
the whole hatching groove is made of transparent organic glass material;
a camera is arranged outside the hatching groove and opposite to the hatching groove.
6. The drifting fish egg embryo development test device according to claim 3 wherein the water body temperature control device comprises a temperature control device installed on the hatching tank, and further comprises a temperature sensor installed in the hatching tank, wherein the temperature control device and the temperature sensor are respectively connected with the control center; the water body oxygen content control device comprises an aeration device arranged in the hatching tank and also comprises an dissolved oxygen content detection sensor arranged in the hatching tank, wherein the aeration device and the dissolved oxygen content detection sensor are respectively connected with the control center;
an adjusting tank is fixedly arranged outside one side of the hatching tank, a communication notch is arranged between the adjusting tank and the hatching tank so that the two are communicated, and the temperature control device and the aeration device are positioned in the adjusting tank;
the adjusting groove is positioned at the position of the turning position outside the hatching groove;
the water flow rate control device also comprises a water flow rate detection device, wherein the water flow rate detection device is connected with the control center, and the control center is connected with the motor.
7. A drifting fish egg embryo development test device according to claim 3, wherein: the front surface of the push plate is provided with an elastic material layer;
the push plate is detachably connected with the circulating motion control mechanism.
8. The drifting fish egg embryo development test device according to claim 7 wherein a circle of backward flexible ribbons are provided on the push plate rearward of the rear side of each through hole;
the rear side surfaces of the first pushing plate and the second pushing plate are respectively provided with a flexible ribbon, and the length of the flexible ribbon at the rear side of the first pushing plate is matched with the interval between the first pushing plate and the second pushing plate.
9. The drifting fish egg embryo development test device according to claim 3 further comprising a particle image detection system, wherein the particle image detection system comprises a camera arranged opposite to the hatching groove, a laser arranged opposite to a camera shooting area on the hatching groove, a plurality of trace particles thrown into a water body in the hatching groove, and the laser and the camera are respectively connected with a control center;
the size and the quality of the trace particles are matched with the size and the quality data of the fish eggs;
the camera is a CCD camera;
the laser has a laser light source facing the width direction of the hatching slot.
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