A fish fry screening device for aquaculture

Abstract

The utility model provides a kind of fry screening device for aquaculture, it is related to aquaculture technical field, including organism, the inside of the organism is provided with adjustable shaking screening mechanism, the side of the organism is provided with humidification mechanism, the other side of the organism is equipped with PLC controller, the wiring end of the PLC controller is connected with device inner wire arrangement.This utility model in, by setting adjustable shaking screening mechanism, first servo motor drives the rotation of one-way screw rod, moves the moving block under the restriction of first limit rod, further let rack drive gear and rotating rod rotate, realize that screen cylinder shakes, simultaneously, second servo motor drives the rotation of two-way screw rod, can adjust the interval of two adjusting plate and contact sensor, when moving block touches contact sensor, will feedback signal to PLC controller, control first servo motor reverses, to this flexible adjustment screen cylinder shaking range, solved the problem that existing device cannot flexibly adjust shaking range.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology, and in particular to a fish fry screening device for aquaculture. Background Technology

[0002] Aquaculture involves artificially bred aquatic products and aquatic products from rivers. During the artificial breeding process, some individuals may die due to poor development. To prevent the death of aquatic products, a net with a small aperture is needed to select fish fry in a large net basket.

[0003] For example, a screening device for aquaculture with Chinese announcement number CN222776797U describes in its specification that "this utility model discloses a screening device for aquaculture, including a body, a screening cylinder rotatably connected to the top of the inner wall of the body, a screen fixedly connected to the bottom of the screening cylinder, an arc plate fixedly connected to the top of the body, a water trough opened at the top of the inner side of the arc plate, nozzles fixedly connected at equal intervals to the inner wall of the arc plate, all nozzles being connected to the water trough, and a pushing component provided on one side of the inner wall of the body, the pushing component being used to push the screening cylinder to reciprocate rotation."

[0004] The existing device maintains the humidity of the fish fry's surface during use and filters them by spraying water through nozzles to increase the humidity of the fry's surface and prevent their skin from drying out during the filtering process. Dry skin can lead to respiratory problems, thus increasing mortality due to lack of oxygen and water during the filtering process and improving the survival rate of fry in large-scale filtering. This is beneficial for practical application and operation. However, it cannot flexibly adjust the shaking range of the sieve cylinder according to actual filtering needs, making it difficult to ensure that fry of different numbers and activity levels can be fully filtered. This results in insufficient shaking of the fry in the sieve cylinder, and some fry that meet the specifications cannot fall through the sieve, affecting the filtering effect. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the existing technology that the shaking range of the screen cylinder cannot be flexibly adjusted according to actual screening needs, making it difficult to ensure that fish fry of different quantities and activity levels can be fully screened, resulting in insufficient shaking of fish fry in the screen cylinder and some fish fry that meet the specifications failing to fall through the screen, thus affecting the screening effect. Therefore, this invention proposes a fish fry screening device for aquaculture.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a fish fry screening device for aquaculture, comprising a body, an adjustable shaking screening mechanism provided on the inner side of the body, a humidification mechanism provided on one side of the body, and a PLC controller installed on the other side of the body, wherein the wiring terminals of the PLC controller are connected to the internal wiring of the device. The adjustable shaking screening mechanism includes two rotating rods rotatably connected to the inside of the machine body, with a screen cylinder fixedly connected between the two rotating rods. A protective shell is fixedly connected to one side of the machine body, and a first limiting rod and a second limiting rod are fixedly connected inside the protective shell. A one-way lead screw and a two-way lead screw are rotatably connected inside the protective shell. A moving block is threaded onto the outer surface of the first limiting rod and the one-way lead screw, and a rack is provided on the top of the moving block. One end of one of the rotating rods movably passes through the machine body and is fixedly connected to a gear, which meshes with the rack. Two adjusting plates are threaded onto the outer surface of the second limiting rod and the two-way lead screw, and two contact sensors are installed on one side of the two adjusting plates. A first servo motor and a second servo motor are fixedly installed on one side of the protective shell. The output end of the first servo motor movably passes through the protective shell and is fixedly connected to the smooth end of the one-way lead screw, and the output end of the second servo motor movably passes through the protective shell and is fixedly connected to the smooth end of the two-way lead screw.

[0007] Preferably, the top of the movable block extends through the protective shell and is fixedly connected to a support plate, the rack is installed on the top of the support plate, and a screen is installed at the bottom of the screen cylinder.

[0008] Preferably, the humidification mechanism includes a support frame fixedly connected to one side of the machine body, and a groove is provided on one side of the support frame.

[0009] Preferably, a limiting groove is formed on the inner side of the groove, a reciprocating block is slidably connected in the limiting groove, and the reciprocating block is threaded to the outer surface of the reciprocating screw. A nozzle is installed at the bottom of the reciprocating block.

[0010] Preferably, a third servo motor is fixedly installed on one side of the support frame, and the output end of the third servo motor movably passes through the support frame and the groove and is fixedly connected to the smooth end of the reciprocating lead screw.

[0011] Preferably, a water pump is fixedly installed on one side of the support frame, and the output end of the water pump is fixedly connected to a telescopic pipe. The end of the telescopic pipe away from the water pump passes through the reciprocating block and is connected to the inside of the nozzle.

[0012] Preferably, a groove is provided on one side of the machine body, and a collection box is slidably connected in the groove. Four self-locking casters are installed at the bottom of the machine body.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, an adjustable shaking screening mechanism is set up. The first servo motor drives the unidirectional lead screw to rotate, so that the moving block moves under the restriction of the first limit rod, thereby causing the rack to drive the gear and the rotating rod to rotate, so as to realize the shaking of the screen cylinder. At the same time, the second servo motor drives the bidirectional lead screw to rotate, which can adjust the distance between the two adjustment plates and the contact sensor. When the moving block touches the contact sensor, it will feed back a signal to the PLC controller, which controls the first servo motor to reverse. In this way, the shaking range of the screen cylinder can be flexibly adjusted. According to the actual needs such as the number of fish fry and their activity level, the shaking amplitude of the screen cylinder can be precisely controlled to ensure that the fish fry shake fully, improve the screening effect, and solve the problem that the existing device cannot flexibly adjust the shaking range.

[0014] 2. In this utility model, by setting up a humidification mechanism, a third servo motor is driven to rotate the reciprocating screw, causing the reciprocating block and nozzle to move back and forth in the limiting groove. Combined with the water pump supplying water to the nozzle through the telescopic pipe, the fish fry in the sieve cylinder are fully and evenly humidified, preventing the fish fry from dying due to lack of water. The collection box can be slid out for easy collection of the screened fish fry. The self-locking universal wheels facilitate the overall movement of the device, improving the practicality and ease of operation of the device, and better meeting the actual needs of aquaculture screening. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional view of the main body of a fish fry screening device for aquaculture; Figure 2 The present invention provides a right-side perspective view of a fish fry screening device for aquaculture; Figure 3 This utility model provides a three-dimensional cross-sectional view of the protective shell in a fish fry screening device for aquaculture. Figure 4 This utility model presents a partial three-dimensional view of the support frame in a fish fry screening device for aquaculture.

[0016] Legend: 1. Machine body; 2. Adjustable shaking screening mechanism; 201. Rotating rod; 202. Screen cylinder; 203. Protective shell; 204. First limit rod; 205. One-way lead screw; 206. Moving block; 207. Support plate; 208. Rack; 209. Gear; 210. Second limit rod; 211. Two-way lead screw; 212. Adjusting plate; 213. Contact sensor; 214. First servo motor; 215. Second servo motor; 216. Screen; 3. Humidification mechanism; 301. Support frame; 302. Groove; 303. Limiting groove; 304. Reciprocating lead screw; 305. Reciprocating block; 306. Nozzle; 307. Third servo motor; 308. Water pump; 309. Telescopic pipe; 4. Slide groove; 5. Collection box; 6. PLC controller; 7. Self-locking casters. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Example 1, as Figures 1-4 As shown, this utility model provides a fish fry screening device for aquaculture, including a body 1, an adjustable shaking screening mechanism 2 is provided on the inner side of the body 1, a humidification mechanism 3 is provided on one side of the body 1, and a PLC controller 6 is installed on the other side of the body 1. The wiring terminals of the PLC controller 6 are connected to the wiring inside the device. The adjustable shaking screening mechanism 2 includes two rotating rods 201 rotatably connected to the inner side of the machine body 1. A screen cylinder 202 is fixedly connected between the two rotating rods 201. A protective shell 203 is fixedly connected to one side of the machine body 1. A first limiting rod 204 and a second limiting rod 210 are fixedly connected inside the protective shell 203. A one-way lead screw 205 and a two-way lead screw 211 are rotatably connected inside the protective shell 203. A moving block 206 is threaded onto the outer surface of the first limiting rod 204 and the one-way lead screw 205. A rack 208 is provided on the top of the moving block 206. One end of one of the rotating rods 201 movably passes through the machine body 1 and is fixedly connected to... A gear 209 is connected and meshes with a rack 208. Two adjusting plates 212 are threaded onto the outer surface of the second limiting rod 210 and the bidirectional lead screw 211. Two contact sensors 213 are installed on one side of the two adjusting plates 212. A first servo motor 214 and a second servo motor 215 are fixedly installed on one side of the protective shell 203. The output end of the first servo motor 214 movably passes through the protective shell 203 and is fixedly connected to the smooth end of the unidirectional lead screw 205. The output end of the second servo motor 215 movably passes through the protective shell 203 and is fixedly connected to the smooth end of the bidirectional lead screw 211.

[0020] The overall effect of Embodiment 1 is that by setting an adjustable shaking screening mechanism 2, the shaking range of the screen cylinder 202 can be flexibly adjusted, effectively solving the problem of insufficient screening in existing devices. When screening is required, the first servo motor 214 is started, which drives the one-way lead screw 205 to rotate. Under the limiting action of the first limiting rod 204, the moving block 206 moves linearly along the one-way lead screw 205, thereby causing the rack 208 to move synchronously. The rack 208 meshes with the gear 209, driving the rotating rod 201 and the screen cylinder 202 to rotate, realizing the shaking screening of the screen cylinder 202. At the same time, according to actual needs, the second servo motor 215 drives the bidirectional lead screw 211 to rotate. Under the limiting action of the second limiting rod 210, the two adjusting plates 212 move closer or further away from each other, thereby adjusting the distance between the two contact sensors 213. When the moving block 206 moves and touches the contact sensor 213, the contact sensor 213 transmits a signal to the PLC controller 6. After receiving the signal, the PLC controller 6 controls the first servo motor 214 to reverse, causing the moving block 206 to move in the opposite direction. This cycle repeats, realizing the reciprocating shaking of the screen cylinder 202. By adjusting the spacing of the contact sensors 213, the shaking amplitude of the screen cylinder 202 can be precisely controlled. Whether the number of fish fry is large or small, or the activity level is high or low, they can all be fully shaken in the screen cylinder 202, ensuring that fish fry that meet the specifications can pass through the screen smoothly, significantly improving the screening effect and ensuring the efficient operation of the screening work.

[0021] Example 2, as Figures 1-4 As shown, the top of the movable block 206 extends through the protective shell 203 and is fixedly connected to the support plate 207. The rack 208 is installed on the top of the support plate 207. A screen 216 is installed at the bottom of the screen cylinder 202. The humidification mechanism 3 includes a support frame 301 fixedly connected to one side of the body 1. A groove 302 is provided on one side of the support frame 301. A limiting groove 303 is provided inside the groove 302. A reciprocating block 305 is slidably connected in the limiting groove 303. The reciprocating block 305 is threadedly connected to the outer surface of the reciprocating screw 304. A nozzle 306 is installed at the bottom of the reciprocating block 305. A third servo motor 307 is fixedly installed on one side of the support frame 301. The output end of the third servo motor 307 passes through the support frame 301 and the groove 302 and is fixedly connected to the smooth end of the reciprocating screw 304. A water pump 308 is fixedly installed on one side of the support frame 301. The output end of the water pump 308 is fixedly connected to a telescopic pipe 309. The end of the telescopic pipe 309 away from the water pump 308 passes through the reciprocating block 305 and is connected to the inside of the nozzle 306. A sliding groove 4 is opened on one side of the body 1. A collection box 5 is slidably connected in the sliding groove 4. Four self-locking universal wheels 7 are installed at the bottom of the body 1.

[0022] The overall effect of Embodiment 2 is as follows: by setting up a humidification mechanism 3, the third servo motor 307 drives the reciprocating screw 304 to rotate, causing the reciprocating block 305 to reciprocate under the restriction of the limiting groove 303, thereby driving the nozzle 306 to move synchronously. At the same time, the water pump 308 delivers water to the nozzle 306 through the telescopic pipe 309. During the movement, the nozzle 306 sprays the fish fry in the sieve cylinder 202, achieving uniform humidification and avoiding the problem of dry skin and difficulty breathing caused by local dehydration of the fish fry. This greatly reduces the mortality rate of fish fry during the screening process. In terms of collection and movement, the collection box 5 can slide out along the slide 4, which facilitates the quick collection of screened fish fry and reduces the number of operation steps. The four self-locking universal wheels 7 at the bottom of the body 1 allow the device to be easily moved to different working locations and can be locked during operation to ensure the stability of the device, greatly enhancing the applicability of the device in actual aquaculture scenarios. This greatly facilitates the screening of fish fry in aquaculture. Meanwhile, the PLC controller 6, connected to the internal wiring of the device via terminals, can centrally receive signals from various components, such as the position signal of the moving block 206 transmitted by the contact sensor 213. Based on a preset program, it precisely controls the operation of the first servo motor 214, the second servo motor 215, the third servo motor 307, and the water pump 308. On one hand, it achieves coordinated work among various mechanisms, ensuring the smooth and stable screening process by seamlessly connecting the shaking adjustment of the adjustable shaking screening mechanism 2 and the humidification operation of the humidification mechanism 3. On the other hand, the PLC controller 6 allows for convenient setting and modification of screening parameters, such as adjusting the shaking frequency of the screen cylinder 202 and the spray interval of the nozzles 306. This enables the device to adapt to different screening needs, improving its flexibility and intelligence while reducing the complexity of manual operation.

[0023] Working Principle: First, move the device to the nearest pond where fish fry need to be released using the self-locking casters 7 at the bottom. Connect the power supply, then lock the casters to ensure stability. Check that the collection box 5 is correctly installed in the chute 4 to ensure smooth collection of the screened fish fry. Simultaneously, connect the water source to the water pump 308 to ensure normal water supply. Based on the quantity and activity level of the fish fry to be screened, set relevant parameters through the PLC controller 6. Adjust the distance between the two contact sensors 213 by controlling the second servo motor 215 to determine the swaying amplitude of the screen cylinder 202. Set the operating parameters of the first servo motor 214 to control the swaying frequency of the screen cylinder 202. Set the operating parameters of the third servo motor 307. The parameters are set to determine the reciprocating speed of the nozzle 306, the water supply pressure of the water pump 308, and the spraying interval of the nozzle 306. Then, the fish fry to be screened are placed into the sieve cylinder 202, ensuring an appropriate number of fry to avoid affecting the screening effect. The device is then started via the PLC controller 6. At this time, the adjustable shaking screening mechanism 2 and the humidifying mechanism 3 begin to work. The PLC controller 6 issues a command to start the first servo motor 214, which drives the one-way lead screw 205 to rotate. Since the moving block 206 is threadedly connected to the one-way lead screw 205 and limited by the first limit rod 204, the moving block 206 will move linearly along the one-way lead screw 205, thereby driving the top rack 20. 8. Synchronous movement: The rack 208 meshes with the gear 209, and the gear 209 rotates as the rack 208 moves, thereby driving the rotating rod 201 and the screen cylinder 202 connected to the rotating rod 201 to rotate, realizing the shaking of the screen cylinder 202. When the moving block 206 moves to touch the contact sensor 213, the contact sensor 213 transmits a signal to the PLC controller 6. The PLC controller 6 controls the first servo motor 214 to reverse, causing the moving block 206 to move in the opposite direction. This cycle repeats, realizing the reciprocating shaking of the screen cylinder 202 to screen the fish fry. By adjusting the spacing of the contact sensors 213, the movement range of the moving block 206 can be changed, thereby adjusting the shaking amplitude of the screen cylinder 202 to ensure that fish fry in different states are screened. The process is highly efficient. During the screening, the PLC controller 6 starts the third servo motor 307 and the water pump 308. The third servo motor 307 drives the reciprocating screw 304 to rotate. The reciprocating block 305, due to its threaded connection with the reciprocating screw 304 and its limitation by the limiting groove 303, will reciprocate, thereby driving the nozzle 306 to move synchronously back and forth. The water pump 308 delivers water to the nozzle 306 through the telescopic pipe 309. During the reciprocating movement, the nozzle 306 sprays the fish fry in the screen cylinder 202 evenly, replenishing the water for the fish fry, maintaining their surface humidity, and preventing the fish fry from dying due to dehydration. Finally, the fish fry that meet the specifications fall through the screen 216 at the bottom of the screen cylinder 202 into the collection box 5, completing the entire screening process.

[0024] The wiring diagrams for the contact sensor 213, the first servo motor 214, the second servo motor 215, the third servo motor 307, the water pump 308, and the PLC controller 6 in this utility model are common knowledge in the field. Their working principles are known technologies, and the appropriate models are selected according to actual use. Therefore, the control methods and wiring arrangements for the contact sensor 213, the first servo motor 214, the second servo motor 215, the third servo motor 307, the water pump 308, and the PLC controller 6 will not be explained in detail.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A fish fry screening device for aquaculture, comprising a body (1), characterized in that: An adjustable shaking screening mechanism (2) is provided on the inner side of the machine body (1), a humidification mechanism (3) is provided on one side of the machine body (1), and a PLC controller (6) is installed on the other side of the machine body (1). The wiring terminals of the PLC controller (6) are connected to the internal wiring of the device. The adjustable shaking screening mechanism (2) includes two rotating rods (201) rotatably connected to the inner side of the machine body (1), a screen cylinder (202) is fixedly connected between the two rotating rods (201), a protective shell (203) is fixedly connected to one side of the machine body (1), a first limiting rod (204) and a second limiting rod (210) are fixedly connected inside the protective shell (203), a one-way screw (205) and a two-way screw (211) are rotatably connected inside the protective shell (203), a moving block (206) is threaded on the outer surface of the first limiting rod (204) and the one-way screw (205), a rack (208) is provided on the top of the moving block (206), and one end of one of the rotating rods (201) moves through the machine body (1). The protective shell (203) is fixedly connected to a gear (209), which meshes with a rack (208). The second limiting rod (210) and the outer surface of the bidirectional lead screw (211) are threaded with two adjusting plates (212). Two contact sensors (213) are installed on one side of the two adjusting plates (212). A first servo motor (214) and a second servo motor (215) are fixedly installed on one side of the protective shell (203). The output end of the first servo motor (214) moves through the protective shell (203) and is fixedly connected to the smooth end of the unidirectional lead screw (205). The output end of the second servo motor (215) moves through the protective shell (203) and is fixedly connected to the smooth end of the bidirectional lead screw (211).

2. The fish fry screening device for aquaculture according to claim 1, characterized in that: The top of the movable block (206) is movably connected through the protective shell (203) and fixedly connected to the support plate (207). The rack (208) is installed on the top of the support plate (207), and the bottom of the screen cylinder (202) is equipped with a screen (216).

3. The fish fry screening device for aquaculture according to claim 1, characterized in that: The humidification mechanism (3) includes a support frame (301) fixedly connected to one side of the body (1), and a groove (302) is provided on one side of the support frame (301).

4. The fish fry screening device for aquaculture according to claim 3, characterized in that: A limiting groove (303) is provided on the inner side of the groove (302). A reciprocating block (305) is slidably connected in the limiting groove (303), and the reciprocating block (305) is threaded to the outer surface of the reciprocating screw (304). A nozzle (306) is installed at the bottom of the reciprocating block (305).

5. The fish fry screening device for aquaculture according to claim 3, characterized in that: A third servo motor (307) is fixedly installed on one side of the support frame (301). The output end of the third servo motor (307) passes through the support frame (301) and the groove (302) and is fixedly connected to the smooth end of the reciprocating lead screw (304).

6. The fish fry screening device for aquaculture according to claim 4, characterized in that: A water pump (308) is fixedly installed on one side of the support frame (301). The output end of the water pump (308) is fixedly connected to a telescopic pipe (309). The end of the telescopic pipe (309) away from the water pump (308) moves through the reciprocating block (305) and is connected to the inside of the nozzle (306).

7. The fish fry screening device for aquaculture according to claim 1, characterized in that: A groove (4) is provided on one side of the body (1), and a collection box (5) is slidably connected in the groove (4). Four self-locking casters (7) are installed at the bottom of the body (1).

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