Classification screen for larva breeding of macrobrachium rosenbergii
The grading screen for giant freshwater prawn larvae, designed in conjunction with a three-layer screening tank and a water supply pipe, solves the problems of low screening efficiency, poor grading accuracy, and insufficient water circulation in traditional devices, and achieves efficient dynamic grading and high survival rate cultivation of giant freshwater prawn larvae.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional giant freshwater prawn larval rearing devices suffer from problems such as low screening efficiency, poor grading accuracy, insufficient water circulation, and structural damage to larvae, making it difficult to meet the requirements of multi-level dynamic grading and uniform water flow.
The system employs a three-layer vertically stacked screening tank, utilizing the difference in nylon filter mesh size for three-stage grading. Combined with a water supply pipe spraying and cable suspension structure, the system accelerates the flow of larvae through the synergistic effect of water flow and mechanical vibration. A modular rapid discharge structure is designed to facilitate cleaning and collection.
It achieves efficient dynamic grading and screening, significantly improves grading accuracy and breeding survival rate, provides a closed-loop screening environment, reduces damage to larvae, and improves screening efficiency.
Smart Images
Figure CN224038229U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of Macrobrachium rosenbergii larva cultivation technology, in particular to a grading screen for Macrobrachium rosenbergii larva cultivation. BACKGROUND
[0002] Macrobrachium rosenbergii (scientific name: Macrobrachium rosenbergii) is a long-armed shrimp arthropod of the genus Macrobrachium, also known as the Malayan prawn, the large long-armed prawn, and the freshwater prawn, and is known as the freshwater prawn king. Macrobrachium rosenbergii is the largest species of Macrobrachium rosenbergii, with a body divided into two parts: the cephalothorax and the abdomen. The body is covered with a chitinous shell. The cephalothorax is thick and the abdomen gradually decreases from front to back, with a sharp tip. The body color is generally greenish brown with brownish yellow stripes.
[0003] In the field of Macrobrachium rosenbergii larva cultivation, the traditional screening device has the following technical defects:
[0004] 1. Low screening efficiency: fixed single-layer filter screen is often used, and larvae are prone to accumulation and clogging, which requires frequent manual cleaning, consuming time and effort;
[0005] 2. Poor grading accuracy: lacking a multi-stage dynamic screening mechanism, it is difficult to accurately grade according to the size of the larvae, affecting the survival rate of subsequent breeding;
[0006] 3. Insufficient water circulation system: uneven water flow distribution cannot effectively drive the flow of larvae, relying on static soaking results in long screening period;
[0007] 4. Structural limitations: rigid design of filter screen can easily damage larvae, and it is difficult to adapt to the grading needs of different growth stages. INVENTION CONTENTS
[0008] The utility model provides a grading screen for Macrobrachium rosenbergii larva cultivation to solve the problems raised in the background art.
[0009] The specific technical solutions are as follows:
[0010] A grading screen for Macrobrachium rosenbergii larva cultivation, comprising a base, an arc-shaped mounting bracket fixedly installed on the top of the base, a Macrobrachium rosenbergii larva grading and screening mechanism arranged on the inner side of the arc-shaped mounting bracket, a water collecting tank fixedly installed on the top of the base, and a collecting groove arranged on the top of the water collecting tank.
[0011] The Macrobrachium rosenbergii larva grading and screening mechanism comprises three vertically arranged screening grooves, a nylon filter screen fixedly installed at the bottom of each screening groove, and a baffle inserted into the right side of each screening groove.
[0012] As one preferred scheme of the utility model, two circular connecting rings are fixedly installed on the inner side of the arched mounting frame, a cable is arranged in the circular connecting ring, two connecting blocks are fixedly installed on the front side and the rear side of the top of the screening groove, and the top of the connecting block is fixedly connected with the bottom of the cable.
[0013] As one preferred scheme of the utility model, a through groove is formed in the screening groove, and a connecting rod is arranged in the through groove.
[0014] As one preferred scheme of the utility model, a bolt is arranged on one side of the screening groove, and the bolt penetrates into the inside of the connecting rod.
[0015] As one preferred scheme of the utility model, a metal filter screen is fixedly installed on the bottom of the collecting groove, and a drain pipe is communicated with the front side of the water collecting groove.
[0016] As one preferred scheme of the utility model, a water supply pipe is arranged in the arched mounting frame, and the water supply pipe is located above the screening groove.
[0017] As one preferred scheme of the utility model, a valve is communicated with the rear side of the water supply pipe, and a uniformly distributed drain head is communicated with the bottom of the water supply pipe.
[0018] The utility model has the following beneficial effects:
[0019] 1. Dynamic grading and screening system: three layers of vertically stacked screening grooves are adopted, three-stage grading is realized through nylon filter screen aperture difference, and deformation filter screen material (nylon) is matched to reduce damage to larvae;
[0020] 2. Water drive + mechanical collaborative screening: uniform water spraying (drain head design) through a water supply pipe is combined with a screening groove shaking mechanism (cable suspension structure), water flow and mechanical vibration are used to accelerate the flow of larvae, and the screening efficiency is improved;
[0021] 3. Modularized quick discharge design: the slot type baffle and the bolt connection structure support quick disassembly, and the larvae after grading are collected and the equipment is cleaned;
[0022] 4. Water circulation optimization: a water collecting groove and a metal filter screen collecting groove are integrated to realize water separation and minimum larvae capture, a drain pipe ensures efficient discharge of waste water, and a closed-loop screening environment is formed.
[0023] The scheme realizes efficient dynamic screening through mechanical-fluid coupling, significantly improves grading accuracy and breeding survival rate, and provides key technical support for large-scale rossia rohita larva cultivation. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1The utility model provides a structure schematic drawing of the hierarchical screen for the macrobrachium rosenbergii larvae cultivation.
[0025] Figure 2 The utility model provides a structure schematic drawing of the arch installation frame of the hierarchical screen for the macrobrachium rosenbergii larvae cultivation.
[0026] Figure 3 The utility model provides a structure schematic drawing of the macrobrachium rosenbergii larvae hierarchical screening mechanism of the hierarchical screen for the macrobrachium rosenbergii larvae cultivation.
[0027] Figure 4 The utility model provides a structure schematic drawing of the screening groove of the hierarchical screen for the macrobrachium rosenbergii larvae cultivation.
[0028] Figure 5 The utility model provides a structure schematic drawing of the collecting groove of the hierarchical screen for the macrobrachium rosenbergii larvae cultivation.
[0029] Figure 6 The utility model provides a structure schematic drawing of the water supply mechanism of the hierarchical screen for the macrobrachium rosenbergii larvae cultivation.
[0030] In the drawing: 1, base; 2, water collecting groove; 3, macrobrachium rosenbergii larvae hierarchical screening mechanism; 301, screening groove; 302, connecting rod; 303, connecting block; 304, cable; 305, round connecting ring; 306, bolt; 307, through groove; 308, insertion groove; 309, baffle; 310, nylon filter screen; 4, collecting groove; 5, arch installation frame; 6, drain pipe; 7, metal filter screen; 8, water supply pipe; 9, valve; 10, drain head. Specific implementation
[0031] The technical scheme of the utility model will be further illustrated by specific implementation in combination with the drawings.
[0032] Among them, the drawing is only used for example explanation, and the representation is only schematic drawing, and not real object drawing, and can not be understood as the limitation of the patent of the utility model; in order to better illustrate the embodiment of the utility model, some components of the drawing will be omitted, enlarged or reduced, and the size of actual product is not represented; for the technical personnel of the prior art, it is understandable that some known structures and their description in the drawing can be omitted.
[0033] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0035] Example
[0036] The grading screen for raising giant freshwater prawn larvae provided in this embodiment, such as... Figures 1-6 As shown, the system includes a base 1, an arched mounting frame 5 fixedly installed on the top of the base 1, a grading and screening mechanism 3 for giant freshwater prawn larvae set on the inner side of the arched mounting frame 5, a water collection trough 2 fixedly installed on the top of the base 1, and a collection trough 4 set on the top of the water collection trough 2. The base 1 is used to install the water collection trough 2, the water collection trough 2 is used to collect and discharge water, and the giant freshwater prawn larvae grading and screening mechanism 3 is used to filter and grade the giant freshwater prawn larvae, thereby separating giant freshwater prawn larvae of different sizes and improving the survival rate during subsequent farming.
[0037] The grading and screening mechanism 3 for giant freshwater prawn larvae includes three vertically placed screening tanks 301. A nylon filter screen 310 is fixedly installed at the bottom of each screening tank 301. A slot 308 is provided on the right side of each screening tank 301, and a baffle 309 is inserted inside the slot 308. The screening tanks 301 and the nylon filter screen 310 are used to filter the giant freshwater prawn larvae. At the same time, the nylon filter screen 310 can deform, so that the entire mechanism can drive the giant freshwater prawn larvae to move when it moves, thereby filtering the giant freshwater prawn larvae. The slot 308 and the baffle 309 facilitate the discharge of unfiltered giant freshwater prawn larvae.
[0038] The inner side of the arc-shaped mounting frame 5 is fixedly provided with two circular connecting rings 305, the inside of the circular connecting ring 305 is provided with a cable 304, the front side and the rear side of the top of the screening groove 301 are fixedly provided with two connecting blocks 303, the top of the connecting block 303 is fixedly connected with the bottom of the cable 304, the screening groove 301 is fixedly hung through the connecting block 303, the cable 304 and the circular connecting ring 305, which is convenient for subsequent shaking of the screening groove 301, and then the larvae of Macrobrachium rosenbergii placed on the top of the nylon filter screen 310 are filtered and screened.
[0039] The inside of the screening groove 301 is provided with a through groove 307, and the inside of the through groove 307 is provided with a connecting rod 302, and the through groove 307 and the connecting rod 302 are used to realize the superposition between the screening grooves 301, and then the larvae of Macrobrachium rosenbergii are graded and screened.
[0040] One side of the screening groove 301 is provided with a bolt 306, the bolt 306 penetrates into the inside of the connecting rod 302, the connecting rod 302 and the screening groove 301 are connected through the bolt 306, and then the screening groove 301 is fixed.
[0041] The bottom of the collecting groove 4 is fixedly provided with a metal filter screen 7, the front side of the water collecting groove 2 is communicated with a drain pipe 6, and the metal filter screen 7 is used to collect the smallest larvae of Macrobrachium rosenbergii, and the water is conveniently discharged.
[0042] The inside of the arc-shaped mounting frame 5 is provided with a water supply pipe 8, and the water supply pipe 8 is located above the screening groove 301, and the water supply pipe 8 is used to guide the water out for subsequent screening of the larvae of Macrobrachium rosenbergii.
[0043] The rear side of the water supply pipe 8 is communicated with a valve 9, and the bottom of the water supply pipe 8 is communicated with uniformly distributed drain heads 10, the valve 9 is used to realize the supply of water, the drain heads 10 are used to uniformly send water into the inside of the screening groove 301, the water increases the flowability of the larvae of Macrobrachium rosenbergii on the top of the nylon filter screen 310, and then the screening of the larvae of Macrobrachium rosenbergii is accelerated.
[0044] In use, the external water supply conduit is connected to the valve 9, and after connection, the Macrobrachium rosenbergii larvae to be screened are introduced into the top screening tank 301 through the opening of the valve 9, and water is sprayed into the inside of the screening tank 301 through the valve 9, the water supply pipe 8 and the drain head 10 to flush the Macrobrachium rosenbergii larvae placed inside, at the same time, the flow of the Macrobrachium rosenbergii larvae is driven, and the screening tank 301 is shaken to drive the Macrobrachium rosenbergii larvae on the top of the nylon filter screen 310 to flow at a high speed for screening, and the Macrobrachium rosenbergii larvae are screened by the multiple screening tanks 301 and the nylon filter screen 310, the smallest Macrobrachium rosenbergii larvae fall on the top of the metal filter screen 7 in the collection tank 4, at the same time, the water in the inside flows into the water collecting tank 2 through the metal filter screen 7 and is discharged through the drain pipe 6, the valve 9 is closed, the baffle 309 on the right side of the screening tank 301 is pulled out, the Macrobrachium rosenbergii larvae not filtered in the screening tank 301 are discharged, at the same time, the collection tank 4 is taken out, the smaller Macrobrachium rosenbergii larvae in the inside are taken out for further cultivation, and the Macrobrachium rosenbergii larvae are classified and cultivated to improve the survival rate of subsequent cultivation.
[0045] The above is only the preferred embodiment of the present application, and does not limit the implementation and protection scope of the present application. For those skilled in the art, it should be realized that any equivalent replacement and obvious change obtained by applying the content of the present application should be included in the protection scope of the present application.
Claims
1. A grading screen for Macrobrachium rosenbergii larvae culture, characterized by, Including the base (1), the top of the base (1) is fixedly installed with an arched mounting rack (5), the inner side of the arched mounting rack (5) is provided with a Macrobrachium rosenbergii larvae grading screening mechanism (3), the top of the base (1) is fixedly installed with a water collecting tank (2), the top of the water collecting tank (2) is provided with a collecting groove (4); The Macrobrachium rosenbergii larvae grading screening mechanism (3) comprises three screening grooves (301) arranged vertically, the bottom of the screening groove (301) is fixedly installed with a nylon filter screen (310), the right side of the screening groove (301) is provided with a slot (308), and the slot (308) is provided with a baffle (309) inserted therein.
2. The Macrobrachium rosenbergii larvae rearing grading screen according to claim 1, characterized in that, The inner side of the arched mounting rack (5) is fixedly installed with two circular connecting rings (305), the circular connecting ring (305) is provided with a cable (304) inserted therein, the front side and the rear side of the top screening groove (301) are fixedly installed with two connecting blocks (303), and the top of the connecting block (303) is fixedly connected with the bottom of the cable (304).
3. The Macrobrachium rosenbergii larvae rearing grading screen according to claim 1, characterized in that, The screening groove (301) is provided with a through groove (307) inside, and the through groove (307) is provided with a connecting rod (302) inserted therein.
4. The Macrobrachium rosenbergii larvae rearing grading screen according to claim 3, characterized in that, One side of the screening groove (301) is provided with a bolt (306) inserted therein, and the bolt (306) penetrates into the inside of the connecting rod (302).
5. The Macrobrachium rosenbergii larvae rearing grading screen according to claim 1, characterized in that, The bottom of the collecting groove (4) is fixedly installed with a metal filter screen (7), and the front side of the water collecting tank (2) is communicated with a drain pipe (6).
6. The Macrobrachium rosenbergii larvae rearing grading screen according to claim 1, characterized in that, The inner side of the arched mounting rack (5) is provided with a water supply pipe (8) inserted therein, and the water supply pipe (8) is located above the screening groove (301).
7. The Macrobrachium rosenbergii larvae rearing grading screen according to claim 6, characterized in that, The rear side of the water supply pipe (8) is communicated with a valve (9), and the bottom of the water supply pipe (8) is communicated with uniformly distributed drain heads (10).