Water changing device for aquaculture seedling culture

Abstract

The invention discloses a water changing device for aquaculture seedling culture, and relates to the technical field of fry and fingerling breeding. A cleaning mechanism is detachably installed on the bottom face of the box body and comprises a dirt bearing plate, an opening and closing mechanism is installed on one side of the box body, a water changing bin is arranged between the bottom face of the anti-entering net and the top end of the dirt bearing plate, and a seedling raising bin is arranged at the position, at the top end of the anti-entering net, of the box body. The opening and closing mechanism comprises a plurality of water sealing plates and a water sealing tail plate, a first temperature measuring meter is installed on one side of the seedling growing bin, a water inlet pipe assembly is installed between the water changing bin and the seedling growing bin and provided with a second temperature measuring meter, an auxiliary drainage pipe is installed on one side of the seedling growing bin, and a main drainage pipe is installed at the bottom of the cleaning mechanism. By creating a living environment which is low in turbulent flow, capable of blocking the excrement cleaning process, constant in water quality and appropriate in temperature for the fries, damage to the original living environment of the fries in the water changing process is avoided, and the survival rate of the fries after water changing is increased.

Description

Technical Field

[0001] The invention relates to the technical field of fish fry and fish species breeding, and in particular to a water changing device for aquaculture seedling raising. Background Art

[0002] Aquaculture seedling cultivation refers to the process of cultivating healthy and strong aquatic animal larvae under artificially controlled conditions by selecting excellent parents, providing suitable environmental conditions, and using scientific feeding and management techniques. The farmed species include fish, crustaceans and shellfish. Among them, fish seedling breeding can be divided into the hatching period, fry period, seedling period and fingerling period according to the size of the seedlings. The fry that have absorbed the yolk sac need to be fed by the breeders, and then a certain amount of excrement will be produced. Therefore, the water in the breeding environment needs to be changed regularly to prevent the excrement from affecting the water quality and reducing the survival rate of the fry.

[0003] The patent specification with the publication number CN118648555A discloses a water changing method for aquaculture seedling production, which absorbs and collects wastewater and impurities inside the fry rearing bin by setting a vibration mechanism and a suction component, and during the suction process of the equipment, the side parts will automatically vibrate to vibrate the water around the suction component, driving the surrounding fry away from the suction component; The disadvantage of this technical solution is that the fry contained in the device has not yet been put into natural waters. The fry are in the larval stage and are extremely sensitive to environmental changes. When the siphon is used to absorb wastewater and impurities, it will cause strong disturbances to the water flow in the bin and the excrement deposited on the bottom of the bin. In addition, in order to prevent the fry from approaching the siphon during the absorption process, a vibration component is added to drive the fry away. In addition, the temperature of the new water is not controlled when new water is added, that is, to achieve the water exchange function, the device causes severe and malicious interference to the living environment of the young fish in a short period of time. The excrement disturbance, water temperature changes, vibrations and disturbances to the water environment caused by it will directly affect the survival rate of the young fish. Summary of the invention

[0004] The purpose of the present invention is to provide a water changing device for aquaculture seedlings, and the technical problems to be solved are as follows: the existing water changing device for young fish fry will destroy the original living environment of the fish fry when changing water, thereby reducing the survival rate of the fish fry.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A water changing device for aquaculture seedling cultivation comprises a box body, a prevent-entry net is arranged in the middle part of the box body, a cleaning mechanism is detachably installed on the bottom surface of the box body, the cleaning mechanism comprises a dirt receiving plate, an opening and closing mechanism is installed on one side of the box body, a water changing bin is arranged between the bottom surface of the prevent-entry net and the top of the dirt receiving plate, the box body is provided with a seedling cultivation bin at the top of the prevent-entry net, the opening and closing mechanism comprises a plurality of water sealing plates and a water sealing tail plate, the opening and closing mechanism is used to control the connection state between the water changing bin and the seedling cultivation bin; a thermometer 1 is installed on one side of the seedling cultivation bin, a water inlet pipe assembly is installed between the water changing bin and the seedling cultivation bin, a thermometer 2 is installed on the water inlet pipe assembly, an auxiliary drainage pipe fitting is installed on one side of the seedling cultivation bin, a main drainage pipe is installed at the bottom of the cleaning mechanism, and the water changing bin does not interfere with the fry in the seedling cultivation bin when changing water.

[0006] As a further solution of the present invention: the height of the water exchange bin is greater than the vertical heights of the water sealing plate and the water sealing tail plate, and both sides of the water sealing plate and the water sealing tail plate are smooth surfaces.

[0007] As a further solution of the present invention: the opening and closing mechanism also includes a gear rack fixedly connected to one side of the box body, a slide groove is provided at the top of the gear rack, a rack is slidably connected inside the slide groove, and a plurality of gears are rotatably connected to the bottom of the gear rack, each of the gears is evenly arranged in the horizontal direction, and the top end is meshed with the rack, and a rotating wheel is fixedly connected to the outer side of one of the gears, and a handle is installed on the outer side of the rotating wheel.

[0008] As a further solution of the present invention: a locking rod is inserted into one side of the rotating wheel, a locking hole is opened on the outside of the box body to adapt to the locking rod, the water sealing plate and the water sealing tail plate both pass through the box body and are connected to the adjacent gears, and the connecting surface formed by the handle axis and the rotating wheel axis is perpendicular to the connecting surface formed by the locking rod axis and the rotating wheel axis.

[0009] As a further solution of the present invention: both sides of the water sealing plate and the water sealing tail plate close to and away from the runner are engaged with the inner wall of the box on the adjacent side, one side of the top of the water sealing plate is an arc surface, and the bottom shape is adapted to the arc surface, one side of the bottom of the water sealing tail plate is an arc surface, and the top is the same as the top of the water sealing plate, and one of the side surfaces of the water sealing plate is in contact with the inner wall of the box on the adjacent side.

[0010] As a further scheme of the present invention: the water inlet pipe assembly includes a main water inlet pipe, the thermometer 2 is installed on the top of the main water inlet pipe, a secondary pipe 1 is installed on one side of the main water inlet pipe, a water control valve 1 is installed in the middle of the secondary pipe 1, a branch water inlet pipe is installed on the side of the secondary pipe 1 away from the main water inlet pipe, a plurality of branch pipes 1 are installed between the branch water inlet pipe and the seedling raising bin, a secondary pipe 2 is installed on one side of the bottom of the main water inlet pipe, a water control valve 2 is installed in the middle of the secondary pipe 2, and the secondary pipe 2 is connected to the water exchange bin.

[0011] As a further solution of the present invention: the auxiliary drainage pipe fittings include an auxiliary drainage pipe, a water control valve three is installed in the middle of the auxiliary drainage pipe, a branch water pipe is installed on one side of the auxiliary drainage pipe, a plurality of branch pipes two are installed between the branch water pipe and the seedling chamber, a drainage valve is installed on one side of the main drainage pipe, and water flow plates are installed on the sides of each branch pipe one and each branch pipe two inside the box, and water flow holes are evenly arranged on the surface of the water flow plates.

[0012] As a further solution of the present invention: the cleaning mechanism also includes a bottom frame, a sealing ring is installed inside the bottom frame, the sealing ring is fitted with the bottom surface of the box body, the dirt-receiving plate is placed above the sealing ring, and handles are provided on both sides of the middle part, the dirt-receiving plate is adapted to the main drain pipe and is provided with a water outlet, a plurality of locking plates are fixedly connected on both sides of the bottom frame, a handle is threadedly connected between the top of the locking plate and the box body, and release plates are provided on both sides of the bottom surface of the bottom frame.

[0013] Beneficial effects of the present invention: 1. In the present invention, an opening and closing mechanism is arranged on the outside of the box body, a water inlet pipe assembly is installed on the outside of the box body, a main drain pipe is installed at the bottom of the cleaning mechanism, an anti-entry net is arranged on the top of each water sealing plate and the water sealing tail plate, and each water sealing plate and the water sealing tail plate are merged into a horizontal plate to block the internal space of the box body by changing and locking the position of the runner, so as to form a water change chamber and a seedling raising chamber separated from each other, and then the sewage in the water change chamber is discharged by means of the water control valve 2 on the water inlet pipe assembly in conjunction with the drain valve, and then clean water is injected, and the runner is restored, so that the water change chamber and the seedling raising chamber are connected, and the new water injected from the bottom of the box body and the relatively clean old water on the top are gradually mixed to complete the water change, thereby avoiding the interference of the fry with the violent disturbance of the water flow during the water change, and avoiding the stimulation of the fry with the sudden change of water quality, which is intended to improve the survival rate of the fry after the water change by avoiding strong disturbance and sudden change of water quality, and maintain the unity of the living environment of the fry before and after the water change; Furthermore, after the opening and closing mechanism separates the nursery chamber and the water-changing chamber, the breeding personnel open the drain valve to discharge the sewage containing excrement, and then can continuously inject and discharge clean water into the water-changing chamber for multiple times to achieve multiple flushing of the water-changing chamber, and further improve the cleaning effect of the bottom sediment inside the box body. After the cleaning is completed, clean water is injected into the water-changing chamber again, and then the water-changing chamber and the nursery chamber are connected. The purpose is to separate the excrement sediment layer from the living environment of the fry through the opening and closing mechanism and the anti-entry net, so that the excrement cleaning process no longer interferes with the normal survival of the fry, and the excrement sediment layer can be cleaned repeatedly to enhance the cleaning effect, so as to improve the survival rate of the fry after water change.

[0014] 2. In the present invention, a thermometer 1 is installed in the box body, and a water inlet pipe assembly with a thermometer 2 is installed on the outside of the box body. Before the water enters the box body, the water in the main water inlet pipe is heated so that the temperature measured by the thermometer 1 on the water body in the box body is close to the temperature measured by the thermometer 2 at the main water inlet pipe. Then, the water control valve 1 and the water control valve 2 are opened and closed to cooperate with the drain valve and the auxiliary drain pipe to change the water. When the water is changed subsequently, the temperature of the water body in the box body before and after the water change can be maintained uniform. The purpose is to maintain the uniform water temperature before and after the water change to avoid the change of the living environment of the fry due to the sudden change of water temperature, thereby improving the survival rate of the fry when the water is changed; that is, during the water change process, a relatively stable living environment with low disturbance, blocking the excrement cleaning process, constant water quality and suitable temperature is created for the fry, thereby avoiding the damage to the original living environment of the fry during the water change process and improving its survival rate after the water change. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial cross-sectional view of the water exchange bin and the seedling raising bin of the present invention when they are connected; Figure 3 It is a partial cross-sectional view of the water exchange bin and the seedling raising bin of the present invention when they are closed; Figure 4 The present invention Figure 1 A magnified detail of the center point A; Figure 5 It is a schematic structural diagram of a water sealing plate and a water sealing tail plate of the present invention; Figure 6 It is a schematic diagram of the structure of the present invention when viewed from above; Figure 7 The present invention Figure 6 A magnified view of the detail at B in the middle; Figure 8 It is an exploded view of the cleaning mechanism of the present invention.

[0017] In the figure: 1. Box; 2. Anti-entry net; 3. Cleaning mechanism; 31. Dirt-bearing plate; 32. Bottom frame; 33. Sealing ring; 34. Locking plate; 35. Handle; 36. De-board; 4. Opening and closing mechanism; 41. Water-sealing plate; 42. Water-sealing tail plate; 43. Gear rack; 44. Slide; 45. Rack; 46. Gear; 47. Rotating wheel; 48. Handle; 49. Locking rod; 5. Water exchange chamber; 6. Seedling chamber; 7. Thermometer 1; 8 , water inlet pipe assembly; 81, main water inlet pipe; 82, auxiliary pipe one; 83, water control valve one; 84, branch water inlet pipe; 85, branch pipe one; 86, auxiliary pipe two; 87, water control valve two; 9, thermometer two; 10, auxiliary drainage pipe fittings; 101, auxiliary drainage pipe; 102, water control valve three; 103, branch water outlet pipe; 104, branch pipe two; 11, main drainage pipe; 12, supporting foot; 13, lock hole; 14, drainage valve; 15, water pass plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 8 As shown, a water changing device for aquaculture seedlings comprises a box body 1, an anti-ingress net 2 is fixedly connected to the middle of the box body 1, a cleaning mechanism 3 is detachably installed on the bottom surface of the box body 1, the cleaning mechanism 3 comprises a dirt receiving plate 31, an opening and closing mechanism 4 is installed on one side of the box body 1, a water changing bin 5 is arranged between the bottom surface of the anti-ingress net 2 and the top of the dirt receiving plate 31, the box body 1 is provided with a seedling raising bin 6 at the top of the anti-ingress net 2, the opening and closing mechanism 4 comprises a plurality of water sealing plates 41 and a water sealing tail plate 42 which can be rotated 90 degrees, The opening and closing mechanism 4 is used to control the connection state between the water exchange bin 5 and the seedling raising bin 6. A thermometer 7 is installed on one side of the seedling raising bin 6. A water inlet pipe assembly 8 is installed on the outer side of the box body 1 between the water exchange bin 5 and the seedling raising bin 6. A thermometer 2 9 is installed on the water inlet pipe assembly 8. A secondary drainage pipe 10 is installed on one side of the seedling raising bin 6. A main drainage pipe 11 is installed at the bottom of the cleaning mechanism 3. The water inlet pipe assembly 8, the secondary drainage pipe 10 and the main drainage pipe 11 are used to cooperate with the water exchange bin 5 and the seedling raising bin 6 to exchange water; It should be noted that the fry are smaller in size when they are in the fry stage, so the holes of the anti-entry net 2 are smaller than the width of the fry to prevent the fry from drilling into the water exchange bin 5, and the anti-entry net 2 is arranged in the lower middle part of the box body 1; four supporting feet 12 are evenly installed along the circumferential side of the box body 1, and each supporting foot 12 raises the box body 1 to facilitate the later disassembly and assembly of the cleaning mechanism 3, and when the main drain pipe 11 installed at the bottom of the cleaning mechanism 3 discharges sewage, a corrugated hose will be installed at the pipe mouth position, and the height of the corrugated hose pipe mouth is higher than the bottom surface of the supporting feet 12, so as to facilitate smooth sewage discharge; a temperature measuring frame (not shown) is installed at a corner position on the inner side of the box body 1, which is used to support the bottom support rod of the thermometer 7, and a temperature sensor is arranged on the bottom surface of the support rod of the thermometer 7 to measure the water temperature in the seedling raising bin 6, so as to realize the monitoring of the temperature in the seedling raising bin 6; in addition, the water exchange bin 5 (see Figure 2 ) is greater than the vertical height of the water sealing plate 41 and the water sealing tail plate 42, thereby forming a sediment layer of excrement and debris at the bottom of the water exchange bin 5 to prevent the sediment from contacting the water sealing plate 41 and the water sealing tail plate 42. Preferably, both sides of the water sealing plate 41 and the water sealing tail plate 42 are smooth surfaces to further prevent debris from accumulating thereon.

[0020] like Figures 1 to 5 As shown, the opening and closing mechanism 4 also includes a gear rack 43 fixedly connected to the side of the box body 1, a slide groove 44 is provided on the top of the gear rack 43, a rack 45 is slidably connected in the slide groove 44, and six gears 46 are rotatably connected to the bottom of the gear rack 43. The six gears 46 are divided into a driving gear and five driven gears. Each gear 46 is evenly arranged in the horizontal direction, and the top of each gear 46 is meshed with the rack 45. A rotating wheel 47 is fixedly connected to the outer side of the driving gear, a handle 48 is installed on the outer side of the rotating wheel 47, and a locking rod 49 is inserted on one side of the rotating wheel 47. A lock hole 13 is provided on the outer side of the box body 1 to adapt to the locking rod 49. The water sealing plate 41 and the water sealing tail plate 42 both penetrate the box body 1 and are connected to the adjacent gears 46. When the handle 48 is in a low position and rotated to lock the locking rod 49, the rotation angle is 90 degrees. It should be noted that the water-sealing tail plate 42 and each water-sealing plate 41 all penetrate the box body 1 and are connected to the gear 46 on the outside. Preferably, a sealing gasket is installed at the penetration position to improve the sealing performance of the device. Since the interior of the box body 1 is divided into the water exchange chamber 5 and the seedling chamber 6 in the vertical direction, the main structure used for division is the water-sealing tail plate 42 and each water-sealing plate 41 that can be rotated 90 degrees. After being connected to the gear 46 on the outside, the breeder can rotate the rotating wheel 47 by holding the handle 48, and the driving gear connected to the rotating wheel 47 rotates on the gear rack 43 accordingly, and the rack 45 slidably connected to the top and the gear rack 43 is driven to move horizontally during rotation. Optionally, a "T"-shaped notch is provided on the inner side of the rack 45, and a slide bar adapted to the notch is provided in the slide groove 44, so as to achieve the limiting effect on the rack 45; after the rack 45 moves, it drives the driven gears meshing with it at the bottom to rotate synchronously, and after the gears 46 rotate, the internal water sealing tail plate 42 and the water sealing plates 41 are driven to rotate. When it is turned to a vertical state, the water changing chamber 5 and the seedling raising chamber 6 in the device are connected and are in a seedling raising state. When it is turned to a horizontal state, the water changing chamber 5 and the seedling raising chamber 6 in the device are separated and are in a water changing state, that is, the control of whether the internal water changing state is possible is achieved by operating the opening and closing mechanism 4 on the outside; The two sides of the water sealing plate 41 and the water sealing tail plate 42 close to the runner 47 and away from the runner 47 are both in contact with the adjacent sides of the inner wall of the box body 1. The top side of the water sealing plate 41 is a 90-degree arc, and the bottom shape is adapted to the arc. The bottom side of the water sealing tail plate 42 is an arc, and the top is the same as the top of the water sealing plate 41. The side of the water sealing plate 41 at the edge position is in contact with the adjacent side of the inner wall of the box body 1. It should be noted that when each plate is rotated to a horizontal state, the arc-shaped interface at the bottom of the water sealing plate 41 is connected to the arc-shaped structure at the top of the water sealing plate 41 on the adjacent side, and the top of the water sealing tail plate 42 is also connected to the bottom of the water sealing tail plate 42 on the adjacent side, thereby forming a horizontal plate that blocks the upper and lower spaces inside the box body 1 (see Figure 3 ), so that the water exchange chamber 5 and the seedling chamber 6 inside the box body 1 are isolated from each other. At this time, after the main drain pipe 11 is opened for drainage, only the sewage in the water exchange chamber 5 will be emptied; In the seedling raising stage, the handle 48 is at the bottom of the rotating wheel 47, the rotating wheel 47 is fixedly connected to the driving gear, and the driving gear is connected to the water sealing plate 41. Figure 2In the middle state, the water exchange chamber 5 and the seedling chamber 6 are connected, and the water sealing plates 41 and the water sealing tail plate 42 are in a vertical state. At this time, the fry move in the seedling chamber 6 above the anti-entry net 2, and the excrement falls into the water exchange chamber 5 through the anti-entry net 2. In the water exchange stage, the handle 48 is rotated to a horizontal state, and the locking rod 49 plugged into the rotating wheel 47 is driven to the bottom of the rotating wheel 47. Preferably, the inner side of the locking rod 49 is a threaded rod and the outer side is a "T" shape. The locking hole 13 on the box body 1 that is adapted thereto is a screw hole. The locking rod 49 is rotated to lock the rotating wheel 47 in the state where the handle 48 is in a horizontal state. At this time, the internal water sealing plates 41 and the water sealing tail plate 42 are rotated to a horizontal state (see Figure 3 ), thereby entering the water changing state, that is, when the handle 48 is at the lowest position at the end of the rotating wheel 47, it is used for seedling cultivation, and when the locking rod 49 is at the lowest position of the rotating wheel 47 and locked with the box body 1, it is used for water changing. The water changing state of the device is switched by rotating and locking the rotating wheel 47.

[0021] like Figure 1 , Figure 6 and Figure 7 As shown, the water inlet pipe assembly 8 includes a main water inlet pipe 81, a thermometer 2 9 is installed on the top of the main water inlet pipe 81, a sub-pipe 1 82 is installed on one side of the main water inlet pipe 81, a water control valve 1 83 is installed in the middle of the sub-pipe 1 82, a branch water inlet pipe 84 is installed on the side of the sub-pipe 1 82 away from the main water inlet pipe 81, five branch pipes 1 85 are installed between the branch water inlet pipe 84 and the seedling warehouse 6, a sub-pipe 2 86 is installed on one side of the bottom of the main water inlet pipe 81, a water control valve 2 87 is installed in the middle of the sub-pipe 2 86, and the sub-pipe 2 86 is connected to the water exchange warehouse 5, the sub-drain pipe 10 includes a sub-drain pipe 101, a water control valve 3 102 is installed in the middle of the sub-drain pipe 101, a branch water outlet pipe 103 is installed on one side of the sub-drain pipe 101, five branch pipes 2 104 are installed between the branch water outlet pipe 103 and the seedling warehouse 6, and a drain valve 14 is installed on the main drain pipe 11; It should be noted that after the opening and closing mechanism 4 is placed horizontally with the water sealing plate 41 and the water sealing tail plate 42, the box body 1 enters a water-changeable state. At this time, the main water inlet pipe 81 is connected to the water inlet. In particular, since a thermometer 7 for measuring the water temperature in the seedling chamber 6 in real time is installed in the box body 1, the water inlet will be heated by a heating device (not shown) before the main water inlet pipe 81 enters the water. After entering the main water inlet pipe 81, the temperature will be measured by the thermometer 2 9. The water temperature suitable for the growth and metabolism of fry in the fry stage is 15 to 25 degrees. When the temperature measured by the thermometer 2 9 is close to the temperature of the thermometer 1 7, the subsequent water change operation is performed. Preferably, the temperature of the thermometer 2 9 should be slightly higher than the temperature of the thermometer 1 7, and the temperature difference does not exceed one degree, so as to control the water change temperature to adapt to the environmental temperature of the fry's previous survival, avoid the stimulation of the fry's living environment by the excessive temperature difference before and after the water change, and improve the survival rate of the fry when changing water; When changing water, the rotating wheel 47 is locked by the locking rod 49, and the nursery chamber 6 and the water changing chamber 5 are separated. At this time, the drain valve 14 is opened to drain the sewage in the water changing chamber 5. Since the fry are small, the excrement is not easily disturbed by their swimming, and the individual fish are small and the amount is small, so they are all deposited at the bottom of the water changing chamber 5. When the water is changed frequently, the excrement in the water changing chamber 5 will be discharged along with the water flow. After discharge, the drain valve 14 is closed, and the water control valve 87 is opened to fill the water changing chamber 5 with water. When filling water for the first time, the injected water can be used as water for flushing the water changing chamber 5. The drain valve 14 is opened for the second time to drain water. That is, thanks to the separation of the water changing chamber 5 and the nursery chamber 6, During the water change process, while maintaining the living environment of the fry unchanged, the bottom position of the excrement can be rinsed multiple times until the cleaning is completed and clean water is injected to complete the water change operation. After the flushing is completed and the water change chamber 5 is filled with clean water, the opening and closing mechanism 4 is restored to a state where the water change chamber 5 and the seedling chamber 6 are connected. At this time, the old water in the seedling chamber 6 is mixed with the new water injected from the bottom to provide the fry with activities. Since the old water in the upper layer is less polluted, and the new water mixed with the old water can also avoid sudden changes in water quality, the fry are stimulated, thereby ensuring the health of their living water environment while reducing the interference of the water change process on the fry, and improving the survival rate of the fry after the water change; Furthermore, since the water is always in a state of mixing new water with old water during water exchange, as the frequency of water exchange increases, the proportion of old water in the water source in the box 1 will continue to increase, thereby gradually reducing the water quality in the box 1. After the new and old water are mixed, the water control valve 2 87 and the drain valve 14 are closed, the main water exchange function in the water exchange chamber 5 is stopped, and then the previously closed water control valve 1 83 and the water control valve 3 102 are opened. In particular, the opening states of the water control valve 1 83 and the water control valve 3 102 are maintained in the same state and are both in a half-open state, so the water inlet is from the main The water inlet pipe 81 enters the auxiliary pipe 1 82, and then enters the branch water inlet pipe 84 and each branch pipe 1 85 from the auxiliary pipe 1 82. In particular, the seedling chamber 6 inside the box body 1 is equipped with a water-passing plate 15 on the side where each branch pipe 1 85 and each branch pipe 2 104 are located. A large number of small water-passing holes are evenly arranged on the surface of the water-passing plate 15 to prevent small fry from entering the pipeline. When each branch pipe 1 85 flows water into the water exchange chamber 5 and the seedling chamber 6 in the box body 1, each branch pipe 2 104 flows out part of the water in the box body 1 at the same speed. However, when the water is flowing in, The water is clean water when it is discharged, and mixed water when it is drained. As time goes by, the old water content in the mixed water in the box body 1 decreases. Under the condition of maintaining the water volume in the box unchanged, the water quality in the box is renewed, so that the device can still keep the water source in the box clean after multiple mixing and water changes, and still avoid the influence of sudden change of water quality on the survival of fish. In addition, although the water quality is renewed at the same time, the disturbance is small, but the water flow still has a direct effect on the fry. Therefore, when the water is in and out, the inlet and outlet water flows are dispersed into multiple branch pipes-85 and multiple branch pipes. In the form of a branch pipe 104, the disturbance of the single-column water flow to the water body in the box body 1 is reduced. During the whole process of changing water, when the main water is changed in the water changing chamber 5, the fry are completely blocked and no disturbance is caused. When the water quality is updated after the mixed water, the water holes on the branch pipes and the water passing plate 15 are used to block and evenly divert the inlet and outlet water flows, reducing the disturbance of the water body in the box body 1 by the water flow, thereby reducing the stimulation of the disturbance of the entire water changing process on the change of the original living environment of the fry, and improving the survival rate of the fry after water change.

[0022] like Figure 8 As shown, the cleaning mechanism 3 also includes a bottom frame 32, a sealing ring 33 is installed inside the bottom frame 32, the sealing ring 33 is fitted with the bottom surface of the box body 1, the dirt holding plate 31 is placed above the sealing ring 33, and handles are arranged on both sides of the middle part, one side of the dirt holding plate 31 is adapted to the main drain pipe 11 to set a water outlet, four locking pieces 34 are fixedly connected on both sides of the bottom frame 32, and a plum blossom handle 35 is threadedly connected between the top of the locking piece 34 and the box body 1, and a stripping plate 36 is arranged on both sides of the bottom surface of the bottom frame 32, and the side of the stripping plate 36 is "L"-shaped, which is used to take off the bottom frame 32 by force after holding; It should be noted that after the fry grow from the larvae stage to the fry stage in the device, they will be transferred to the natural water growth environment to be cultivated into fish species, so as to improve the adaptability of the fry to the later breeding environment. After the fry are cleared out, the device needs to be thoroughly cleaned. At this time, the nursery bin 6 and the water exchange bin 5 are connected, the drain valve 14 is opened, the water in the box body 1 is emptied, and then the handles 35 are unscrewed, and then the bottom frame 32 is removed downward by holding the two release plates 36. The sealing ring 33 is simultaneously separated from the sealing state of the bottom surface of the box body 1. With the help of the handle of the dirt receiving plate 31, the dirt receiving plate 31 is removed and cleaned. Then, each water sealing plate 41 and the water sealing tail plate 42 are rotated to an oblique position at an angle of 45 degrees to the vertical plane, the plate surfaces on both sides are cleaned, and the anti-entry net 2 is cleaned at the same time to achieve a thorough cleaning of the device, so as to carry out the breeding work of the next batch of fry and continuously provide a clean living environment for the cyclic seedling breeding.

[0023] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A water exchange device for aquaculture seedlings, comprising a housing (1), characterized in that: The box body (1) is provided with an anti-ingress net (2) in the middle, a cleaning mechanism (3) is detachably mounted on the bottom surface of the box body (1), the cleaning mechanism (3) comprising a dirt-receiving plate (31), an opening and closing mechanism (4) is mounted on one side of the box body (1), a water exchange bin (5) is arranged between the bottom surface of the anti-ingress net (2) and the top of the dirt-receiving plate (31), the box body (1) is provided with a seedling raising bin (6) at the top of the anti-ingress net (2), the opening and closing mechanism (4) comprising a plurality of water-sealing plates (41) and a water-sealing tail plate (42), the opening and closing mechanism (4) comprising a plurality of water-sealing plates (41) and a water-sealing tail plate (42), The mechanism (4) is used to control the connection state between the water exchange bin (5) and the seedling raising bin (6); a thermometer 1 (7) is installed on one side of the seedling raising bin (6); a water inlet pipe assembly (8) is installed between the water exchange bin (5) and the seedling raising bin (6); a thermometer 2 (9) is installed on the water inlet pipe assembly (8); a secondary drainage pipe (10) is installed on one side of the seedling raising bin (6); a main drainage pipe (11) is installed at the bottom of the cleaning mechanism (3); and when the water exchange bin (5) is changing water, the fry in the seedling raising bin (6) do not interfere with each other.

2. A water changing device for aquaculture seedling raising according to claim 1, characterized in that: The height of the water exchange bin (5) is greater than the vertical height of the water sealing plate (41) and the water sealing tail plate (42), and both sides of the water sealing plate (41) and the water sealing tail plate (42) are smooth surfaces.

3. A water changing device for aquaculture seedling raising according to claim 1, characterized in that: The opening and closing mechanism (4) further comprises a gear rack (43) fixedly connected to one side of the box body (1), a slide groove (44) being provided at the top of the gear rack (43), a rack (45) being slidably connected inside the slide groove (44), a plurality of gears (46) being rotatably connected at the bottom of the gear rack (43), the gears (46) being evenly arranged in a horizontal direction, and the top ends of the gears (46) being meshed with the racks (45), a rotating wheel (47) being fixedly connected to the outside of one of the gears (46), and a handle (48) being installed on the outside of the rotating wheel (47).

4. A water changing device for aquaculture seedling raising according to claim 3, characterized in that: A locking rod (49) is inserted into one side of the rotating wheel (47); a locking hole (13) is provided on the outer side of the housing (1) to fit the locking rod (49); the water sealing plate (41) and the water sealing tail plate (42) both penetrate the housing (1) and are connected to the adjacent gear (46); a connecting surface formed by an axis line of the handle (48) and an axis line of the rotating wheel (47) and a connecting surface formed by an axis line of the locking rod (49) and an axis line of the rotating wheel (47) are perpendicular to each other.

5. A water changing device for aquaculture seedling raising according to claim 4, characterized in that: Both sides of the water sealing plate (41) and the water sealing tail plate (42) close to and away from the impeller (47) are in contact with the inner wall of the box body (1) on the adjacent side; one side of the top of the water sealing plate (41) is a curved surface, and the shape of the bottom is adapted to the curved surface; one side of the bottom of the water sealing tail plate (42) is a curved surface, and the top is the same as the top of the water sealing plate (41); and one side surface of the water sealing plate (41) is in contact with the inner wall of the box body (1) on the adjacent side.

6. A water changing device for aquaculture seedling raising according to claim 1, characterized in that: The water inlet pipe assembly (8) comprises a main water inlet pipe (81), the second temperature measuring meter (9) is installed on the top of the main water inlet pipe (81), a first auxiliary pipe (82) is installed on one side of the main water inlet pipe (81), a first water control valve (83) is installed in the middle of the first auxiliary pipe (82), a branch water inlet pipe (84) is installed on the side of the first auxiliary pipe (82) away from the main water inlet pipe (81), a plurality of first branch pipes (85) are installed between the branch water inlet pipe (84) and the seedling raising bin (6), a second auxiliary pipe (86) is installed on one side of the bottom of the main water inlet pipe (81), a second water control valve (87) is installed in the middle of the second auxiliary pipe (86), and the second auxiliary pipe (86) is connected to the water exchange bin (5).

7. A water changing device for aquaculture seedling raising according to claim 6, characterized in that: The auxiliary drainage pipe (10) comprises an auxiliary drainage pipe (101), a water control valve three (102) is installed in the middle of the auxiliary drainage pipe (101), a branch water outlet pipe (103) is installed on one side of the auxiliary drainage pipe (101), a plurality of branch pipes two (104) are installed between the branch water outlet pipe (103) and the seedling raising bin (6), a drainage valve (14) is installed on one side of the main drainage pipe (11), and a water pass plate (15) is installed on the side where each branch pipe one (85) and each branch pipe two (104) are located inside the box (1), and water pass holes are evenly arranged on the surface of the water pass plate (15).

8. The water changing device for aquaculture seedling raising according to claim 1, characterized in that: The cleaning mechanism (3) further comprises a bottom frame (32), a sealing ring (33) being installed inside the bottom frame (32), the sealing ring (33) being fitted with the bottom surface of the box body (1), the dirt receiving plate (31) being placed above the sealing ring (33), and handles being provided on both sides of the middle portion, the dirt receiving plate (31) being adapted to the main drainage pipe (11) and provided with a water outlet, a plurality of locking plates (34) being fixedly connected to both sides of the bottom frame (32), a handle (35) being threadedly connected between the top end of the locking plate (34) and the box body (1), and release plates (36) being provided on both sides of the bottom surface of the bottom frame (32).

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