A fry rearing and screening device
By introducing an adjustable sieve plate and installation mechanism into the fish fry breeding screening device, the problems of fish fry injury and inconvenient sieve plate in the existing device are solved, and the safety and convenience of fish fry in the screening process are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING THREE GORGES VOCATIONAL COLLEGE
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-03
AI Technical Summary
Existing fish fry breeding screening devices are prone to injuring fish fry during the screening process, and the sieve plates are inconvenient to install and disassemble, which affects the survival rate of fish fry.
A fish fry breeding screening device was designed, which adopts an adjustable sieve plate and an installation mechanism. The installation mechanism enables simple disassembly and assembly of the sieve plate, and keeps the fish fry in the water during the screening process to reduce fish fry damage.
It improves the survival rate of fish fry during the screening process, reduces the time spent on screen replacement and cleaning, and lowers the risk of damage to fish fry.
Smart Images
Figure CN224440090U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aquaculture technology, specifically to a fish fry breeding and screening device. Background Technology
[0002] In the process of aquaculture, in order to improve the survival rate of fish fry, the fish fry need to be initially cultivated before they can be released into the fish pond. After the fish fry have been cultivated for a period of time, due to the different growth conditions of the fish fry, there will be some small fish fry that are not mature. At this time, a fish fry breeding and screening device is needed to separate the small fry from the mature fry.
[0003] The existing fish fry breeding screening device uses a handheld sieve to scoop the fish fry out of the water for screening, and also places the fish fry into one side of the screening tank. The sieve plate divides the screening tank into two chambers. By placing food on one side to attract the fish fry, the small fry pass through the sieve plate, while the adult fry are blocked by the sieve plate.
[0004] Existing fish fry breeding screening devices have the following problems: in the former, the fish fry are removed from the water surface during the screening process, and the screening is carried out by the vibration and swaying of the screen, which can easily cause injury to the fish fry; in the latter, the screen plate is installed in the screening tank by bolts, and after a period of use, it needs to be cleaned or replaced. The installation and disassembly of the screen plate is troublesome. Therefore, we propose a fish fry breeding screening device. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a fish fry breeding screening device. The screen plate is installed in the screening tank through the installation mechanism. The screen plate is easy to disassemble and assemble, which reduces the time required for cleaning or replacement. Moreover, the fish fry do not need to leave the water during screening, which reduces damage to the fish fry. It can effectively solve the problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a fish fry breeding screening device, including a screening tank, an adjustable sieve plate inside the screening tank, and an installation mechanism;
[0007] The installation mechanism includes an adjusting frame, clearance holes, sliding columns, a pull plate, a baffle, and a limiting plate. The screening tank has an adjustable adjusting frame inside. Clearance holes are provided on both the front and rear sides of the upper left side of the adjusting frame. Sliding columns are slidably connected inside each clearance hole. The left ends of two sliding columns are fixedly connected to the right side of a pull plate. A baffle is provided on the right side of the pull plate. The adjusting frame is U-shaped with an upper opening. Limiting plates are provided on both the left and right sides of the upper surface of the opening of the adjusting frame. The two limiting plates and the opening of the adjusting frame form a slot. The sieve plate is inserted into the slot. The sieve plate is installed in the screening tank through the installation mechanism. The sieve plate is easy to install and remove, reducing the time required for cleaning or replacement. Furthermore, the fish fry do not need to leave the water during screening, reducing damage to the fry.
[0008] Furthermore, it also includes a microcontroller, which is located on the front side of the screening tank. The input terminal of the microcontroller is electrically connected to an external power supply to facilitate the normal operation of the equipment.
[0009] Furthermore, the installation mechanism also includes a fixing block, a limiting block, and a spring. Fixing blocks are provided on both the front and rear sides of the adjusting frame, and a limiting block is provided on the right end of the sliding column. A spring is movably sleeved on the outer surface of the sliding column. The springs are located between the left side of the adjacent limiting block and the left wall of the clearance hole, which facilitates fixing the screen plate in the adjusting frame.
[0010] Furthermore, a reciprocating screw is rotatably connected to the front side of the upper surface of the screening tank. The outer surface of the reciprocating screw is slidably connected to the front fixed block through a crescent lock. A limiting rod is provided on the rear side of the upper surface of the screening tank. The outer surface of the limiting rod is slidably connected to the sliding hole on the rear fixed block, which facilitates the left and right movement of the sieve plate.
[0011] Furthermore, a motor is provided on the front side of the upper surface of the screening tank. The right end of the motor's output shaft is fixedly connected to the left end of the reciprocating lead screw, and the input end of the motor is electrically connected to the output end of the microcontroller to provide driving force.
[0012] Furthermore, an air supply pipe is provided in the mounting groove on the right side of the screening tank, and evenly distributed nozzles are provided on the left side of the outer surface of the air supply pipe. A valve is connected in series at the air inlet of the air supply pipe to facilitate increasing thrust and assisting the movement of fish fry.
[0013] Furthermore, the left and right sides of the front wall of the screening tank are provided with limiting grooves, and insert plates are inserted into the inside of the limiting grooves. The front side of the insert plates is provided with sealing gaskets, and the front side of the sealing gaskets contacts the front wall of the screening tank, so as to seal the fish inlet and fish outlet of the screening tank.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This fish fry breeding and screening device has the following advantages:
[0015] When the sieve plate needs to be removed, pull the pull plate to the left. The baffle moves with the pull plate until the slot formed by the two limit plates and the adjusting frame is exposed, releasing the fixation of the sieve plate. The sieve plate can then be pulled out. After cleaning or replacement, insert the sieve plate into the slot, release the pull plate, and the spring will push the limit plate back to its original position through the rebound force. The baffle will then lock the sieve plate into the slot, completing the installation of the sieve plate. The sieve plate is installed in the screening tank through the installation mechanism. The sieve plate is easy to disassemble and assemble, reducing the time required for cleaning or replacement. Moreover, the fish fry do not need to leave the water during screening, reducing damage to the fish fry. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0018] Figure 3 This is an enlarged structural schematic diagram of point A of this utility model;
[0019] Figure 4 This is an enlarged structural schematic diagram of section B of this utility model;
[0020] Figure 5 This is an enlarged structural schematic diagram of point C of this utility model.
[0021] In the diagram: 1. Screening tank, 2. Microcontroller, 3. Mounting mechanism, 31. Adjustment frame, 32. Clearance hole, 33. Sliding column, 34. Pull plate, 35. Baffle, 36. Limiting plate, 37. Fixing block, 38. Limiting block, 39. Spring, 4. Screen plate, 5. Limiting rod, 6. Reciprocating screw, 7. Motor, 8. Air supply pipe, 9. Nozzle, 10. Valve, 11. Limiting groove, 12. Insert plate, 13. Sealing gasket. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-5This embodiment provides a technical solution: a fish fry breeding screening device, including a screening tank 1, an adjustable sieve plate 4 inside the screening tank 1, an installation mechanism 3, and a microcontroller 2. The microcontroller 2 is located on the front side of the screening tank 1, and its input terminal is electrically connected to an external power source. A reciprocating screw 6 is rotatably connected to the front side of the upper surface of the screening tank 1. The outer surface of the reciprocating screw 6 is slidably connected to a front fixing block 37 via a crescent lock. (The outer surface of the reciprocating screw 6 is wrapped with a corrugated tube, which is fixedly connected between the side of the front fixing block 37 and the side of the support seat that supports the rotation of the reciprocating screw 6. When the reciprocating screw 6 is working, the front fixing block 37 drives the corrugated tube to contract or extend, so that the reciprocating screw 6 rotates within the working area.) (To ensure sealing and lubrication during operation) A limiting rod 5 is provided on the rear side of the upper surface of the screening tank 1. The outer surface of the limiting rod 5 is slidably connected to the sliding hole on the rear fixing block 37. A motor 7 is provided on the front side of the upper surface of the screening tank 1. The right end of the output shaft of the motor 7 is fixedly connected to the left end of the reciprocating screw 6. The input end of the motor 7 is electrically connected to the output end of the microcontroller 2. An air supply pipe 8 is provided in the mounting groove on the right side of the screening tank 1. The left side of the outer surface of the air supply pipe 8 is provided with evenly distributed nozzles 9. A valve 10 is connected in series at the air inlet of the air supply pipe 8. Limiting grooves 11 are provided on both the left and right sides of the front wall of the screening tank 1. Insert plates 12 are inserted into the inside of each limiting groove 11. Sealing gaskets 13 are provided on the front side of each insert plate 12. The front sides of the filter trough 4 are in contact with the front wall of the filter trough 1. The staff connects the air inlet of the air supply pipe 8 to the external air pump and pulls out the insert plate 12 in the limiting groove 11 on the right side of the filter trough 1, so that the fish inlet at the upper right end of the front side of the filter trough 1 is opened (the water level in the filter trough 1 is always lower than the fish inlet). Due to the presence of the sealing gasket 13 on the left side, the fish outlet at the lower left end of the front side of the filter trough 1 is sealed. Then, the fish fry can be added into the right side of the filter trough 1 through the fish inlet. Then, the staff adds fish food into the feeding trough on the left side of the filter trough 1. At this time, the valve 10 is opened, and the external air pump pumps gas into the air supply pipe 8 and sprays it from right to left from the nozzle 9. Under the attraction of the fish food and the auxiliary thrust of the airflow, the fish fry pass through the sieve plate 4. Upon reaching the left side of the screening tank 1, the fry are blocked by the sieve plate 4 on the right side of the screening tank 1. At the same time, through the control of the microcontroller 2, the motor 7 drives the reciprocating screw 6 to rotate. The rotation of the reciprocating screw 6 drives the adjusting frame 31 to move back and forth along the limit rod 5 through the front fixing block 37, causing the sieve plate 4 to move back and forth to screen the auxiliary fry. After the fry are screened, the insert plate 12 on the left side is pulled out to open the fish discharge port, and then the fry can be discharged from the screening tank 1 through the fish discharge port. (When the fry have not completely left the screening tank, the screening tank 1 is always kept full of water, and the water level in the screening tank 1 is always lower than the fish inlet). After the fry are discharged, the sieve plate 4 is removed, and the fry are also discharged from the screening tank 1 through the fish discharge port.
[0024] Installation mechanism 3 includes an adjusting frame 31, clearance holes 32, sliding columns 33, pull plates 34, baffles 35, and limiting plates 36. The screening tank 1 has an adjustable adjusting frame 31 inside. Clearance holes 32 are provided on both the front and rear sides of the upper left side of the adjusting frame 31. Sliding columns 33 are slidably connected inside each clearance hole 32. The left ends of two sliding columns 33 are fixedly connected to the right side of a pull plate 34. A baffle 35 is provided on the right side of the pull plate 34. The adjusting frame 31 is U-shaped with an upper opening. Limiting plates 36 are provided on both the left and right sides of the upper surface of the opening of the adjusting frame 31. The two limiting plates 36 and the opening of the adjusting frame 31 form a slot. The sieve plate 4 is inserted into the slot. Installation mechanism 3 also includes fixing blocks 37, limiting blocks 38, and springs 39. Fixing blocks 37 are provided on both the front and rear sides of the adjusting frame 31, and limiting blocks are provided on the right ends of the sliding columns 33. 38. Springs 39 are movably fitted on the outer surface of the sliding column 33. The springs 39 are located between the left side of the adjacent limiting block 38 and the left wall of the clearance hole 32. When the screen plate 4 needs to be removed, pull the pull plate 34 to the left. The pull plate 34 drives the sliding column 33 to slide along the clearance hole 32, causing the limiting block 38 to squeeze the spring 39. The baffle 35 moves to the left with the pull plate 34 until the slot formed by the two limiting plates 36 and the adjusting frame 31 is exposed. The snap-fit relationship formed by the screen plate 4, the adjusting frame 31, the limiting plate 36 and the baffle 35 is released, and the screen plate 4 can be pulled out from the slot. After cleaning or replacement, insert the screen plate 4 into the slot, and then release the pull plate 34. The spring 39 drives the limiting plate 36 to return to its original position through the rebound force, causing the baffle 35 to snap the screen plate 4 into the slot formed by the two limiting plates 36 and the adjusting frame 31, thus completing the installation of the screen plate 4.
[0025] The working principle of the fish fry breeding and screening device provided by this utility model is as follows: The operator connects the air inlet of the air supply pipe 8 to an external air pump, and pulls out the insert plate 12 in the limiting groove 11 on the right side of the screening tank 1, so that the fish inlet at the upper right end of the front side of the screening tank 1 is opened (the water level in the screening tank 1 is always lower than the fish inlet). Due to the presence of the sealing gasket 13 on the left side, the fish outlet at the lower left end of the front side of the screening tank 1 is sealed. Then, the fish fry can be added into the inside right side of the screening tank 1 through the fish inlet. Then, the operator feeds the fish fry into the screening tank 1. Fish food is added to the feeding trough on the left. At this time, valve 10 is opened, and an external air pump pumps gas into the air supply pipe 8, which sprays out from right to left from the nozzle 9. Under the attraction of the fish food and the auxiliary thrust of the airflow, the fry pass through the sieve plate 4 and reach the left side of the screening tank 1, while the adult fry are blocked by the sieve plate 4 on the right side of the screening tank 1. At the same time, through the control of the microcontroller 2, the motor 7 drives the reciprocating screw 6 to rotate. The rotation of the reciprocating screw 6 drives the adjusting frame 31 to move back and forth along the limit rod 5 through the front fixing block 37, causing the sieve plate 4 to move back and forth. The process involves screening the auxiliary fish fry. After screening, the left-side insert plate 12 is pulled out to open the fish discharge port, allowing the fry to exit through the discharge port into the screening tank 1. (While the fry are not completely out of the screening tank, water must always be present in the screening tank 1, and the water level in the screening tank 1 must always be lower than the fish inlet). After the fry are discharged, the screen plate 4 is removed, and the adult fry also exit through the discharge port into the screening tank 1. To remove the screen plate 4, pull the pull plate 34 to the left. The pull plate 34 causes the sliding column 33 to slide along the clearance hole 32, causing the limit block 3 to... 8. Press the spring 39, and the baffle 35 moves to the left along with the pull plate 34 until the slot formed by the two limit plates 36 and the adjusting frame 31 is exposed. Release the snap-fit relationship formed by the screen plate 4, the adjusting frame 31, the limit plate 36 and the baffle 35, and the screen plate 4 can be pulled out from the slot. After cleaning or replacement, insert the screen plate 4 into the slot, and then release the pull plate 34. The spring 39 drives the limit plate 36 to reset through the rebound force, so that the baffle 35 snaps the screen plate 4 into the slot formed by the two limit plates 36 and the adjusting frame 31, thus completing the installation of the screen plate 4.
[0026] It is worth noting that the microcontroller 2 disclosed in the above embodiments can be an LPC1114, and the motor 7 can be a 57HS76-4004D stepper motor. The microcontroller 2 controls the operation of the motor 7 using methods commonly used in the prior art.
[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A fish fry breeding screening device, comprising a screening tank (1), the inside of the screening tank (1) is provided with an adjustable screen plate (4), characterized in that: It also includes the installation mechanism (3); The installation mechanism (3) includes an adjustment frame (31), a clearance hole (32), a sliding column (33), a pull plate (34), a baffle (35), and a limiting plate (36). The screening tank (1) is equipped with an adjustable adjustment frame (31). The front and rear sides of the upper left side of the adjustment frame (31) are provided with clearance holes (32). The clearance holes (32) are slidably connected to the inside of the clearance holes (32). The left ends of the two sliding columns (33) are fixedly connected to the right side of a pull plate (34). The right side of the pull plate (34) is provided with a baffle (35). The adjustment frame (31) is a U-shaped structure with an upper opening. The upper surface of the opening of the adjustment frame (31) is provided with limiting plates (36) on both the left and right sides. The two limiting plates (36) and the opening of the adjustment frame (31) form a slot. The sieve plate (4) is inserted into the slot.
2. A larviculture screening device according to claim 1, characterized in that: It also includes a microcontroller (2), which is located on the front side of the screening tank (1), and the input terminal of the microcontroller (2) is electrically connected to an external power supply.
3. A larviculture screening apparatus according to claim 2, characterized in that: The installation mechanism (3) also includes a fixing block (37), a limiting block (38) and a spring (39). The front and rear sides of the adjusting frame (31) are provided with fixing blocks (37), the right end of the sliding column (33) is provided with a limiting block (38), and the outer surface of the sliding column (33) is movably fitted with a spring (39). The spring (39) is located between the left side of the adjacent limiting block (38) and the left wall of the clearance hole (32).
4. The fish fry breeding and screening device according to claim 3, characterized in that: The upper surface of the screening tank (1) is rotatably connected to a reciprocating screw (6). The outer surface of the reciprocating screw (6) is slidably connected to the front fixing block (37) via a crescent lock. The upper surface of the screening tank (1) is provided with a limiting rod (5). The outer surface of the limiting rod (5) is slidably connected to the sliding hole on the rear fixing block (37).
5. A larviculture screening apparatus according to claim 4, characterized in that: The upper surface of the screening tank (1) is provided with a motor (7). The right end of the output shaft of the motor (7) is fixedly connected to the left end of the reciprocating screw (6). The input end of the motor (7) is electrically connected to the output end of the microcontroller (2).
6. A larviculture screening apparatus according to claim 1, characterized in that: An air supply pipe (8) is provided in the mounting groove on the right side of the screening tank (1). The outer surface of the air supply pipe (8) is provided with uniformly distributed nozzles (9). A valve (10) is connected in series at the air inlet of the air supply pipe (8).
7. A larviculture screening apparatus according to claim 1, characterized in that: The screening tank (1) has a limiting groove (11) on both the left and right sides of the front wall. A plate (12) is inserted into the inside of the limiting groove (11). A sealing gasket (13) is provided on the front side of the plate (12). The front side of the sealing gasket (13) is in contact with the front wall of the screening tank (1).