Quantitative feeding device for locusts
By using a cross-drive design and a detachable scraper for quantitative feeding of leeches, the problems of complex transmission and low efficiency in leech farming equipment have been solved, achieving efficient and stable quantitative feeding that can adapt to different feed sizes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-14
AI Technical Summary
Existing leech farming equipment has a complex transmission structure, low efficiency, and is difficult to maintain, especially in high humidity environments where it is prone to rust and slippage.
The cross-drive design uses a single flat belt to connect the main pulley and the driven pulley, eliminating gears and multiple belts. Combined with a convex base and a detachable scraper, it achieves reverse synchronous drive and quantitative feeding of the two conveyor belts.
The transmission structure has been simplified, transmission efficiency has been improved, stable operation in high humidity environments has been ensured, and the system can adapt to different sizes of feed, achieving efficient and stable quantitative feeding.
Smart Images

Figure CN224482612U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aquaculture equipment technology, specifically to a leech quantitative feeder. Background Technology
[0002] In leech farming, the accuracy of feed delivery and the reliability of equipment directly affect farming efficiency. In the existing technology, patent CN222656022U discloses an automatic leech feed delivery device, which drives double-sided feeding belts through the meshing of a first and second gear, and relies on a fixed belt, a first belt, and a second belt for power transmission. Although it can deliver leech feed in both directions in a quantitative manner, this solution still has the following drawbacks:
[0003] 1. The transmission structure is relatively complex: gear meshing and three belts form a multi-stage transmission chain with a large number of parts (>12), making installation and maintenance relatively complicated;
[0004] 2. Low transmission efficiency: Multi-stage transmission chains lead to energy loss at each stage; especially when the humidity in the aquatic environment is >80%, gear corrosion and belt slippage further reduce transmission efficiency.
[0005] Therefore, there is an urgent need for a quantitative feeding device with a simplified structure and high transmission efficiency to solve the problems of high energy consumption and difficult maintenance in the existing multi-stage transmission technology. Utility Model Content
[0006] In view of this, the purpose of this utility model is to provide a leech quantitative feeder to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A leech feeder includes a base, two conveyor belts, a drive assembly, and a moving assembly. The base has baffles on its front and rear sides. The two conveyor belts are respectively positioned on the left and right sides of the base, extending outwards from bottom to top, with their bottoms enclosing the baffles to form a hopper. Each conveyor belt has multiple scrapers evenly arranged circumferentially. The drive assembly includes a main pulley and a driven pulley, which are respectively connected to the drive rollers of the two conveyor belts, and the main pulley and driven pulley are connected via a cross-drive flat belt. The moving assembly is located at the bottom of the base.
[0009] As a further improvement of this utility model, the top surface of the base is convex.
[0010] As a further embodiment of this utility model: the conveyor belt is fixedly connected with a plurality of connecting strips respectively corresponding to the position of the scraper, and the scraper is detachably connected to the connecting strips by screws.
[0011] As a further embodiment of this utility model, the drive assembly further includes a reducer and a motor; the motor is connected to the main pulley through the reducer.
[0012] As a further improvement of this utility model, the electric motor is a stepper motor.
[0013] As a further improvement of this utility model, the mobile component is a tracked chassis.
[0014] By adopting the above technical solution, this utility model has the following beneficial effects:
[0015] 1. Cross-drive design (main pulley, driven pulley, flat belt): Eliminates gears and multiple belt drive chains, and adopts a single flat belt to cross-connect the main / driven pulleys, realizing reverse synchronous drive of the two-sided conveyor belts. The drive chain is greatly shortened, reducing energy loss, and the structure is simpler and easier to maintain.
[0016] 2. Convex base and scraper layout: The top surface of the base is convex, which allows the snail bait on the convex surface to be naturally dispersed to both sides of the conveyor belt, making the bait evenly distributed; the scraper is detachably connected to the conveyor belt by screws, so that the spacing between two adjacent scrapers can be adjusted to accommodate snail bait of different sizes.
[0017] Compared with existing technologies, this utility model achieves efficient and stable bidirectional quantitative feeding with a minimalist transmission structure, and can adapt to different sizes of bait. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a front view of the leech feeder described in an embodiment of the present invention;
[0020] Figure 2 for Figure 1 Top view of the leech feeder described in the embodiment;
[0021] Figure 3 for Figure 1 A cross-sectional view of the scraper connection point of the leech feeder described in the embodiment.
[0022] The correspondence between the labels and component names in the attached figures is as follows:
[0023] 1. Base; 2. Conveyor belt; 31. Main pulley; 32. Driven pulley; 33. Flat belt; 34. Reducer; 35. Motor; 4. Moving assembly; 5. Baffle; 6. Scraper; 61. Connecting bar; 62. Screw. Detailed Implementation
[0024] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the following description is to be considered exemplary in nature and not restrictive.
[0025] refer to Figure 1 and Figure 2 In one embodiment of the leech feeder provided by this utility model, the leech feeder includes a base 1, two conveyor belts 2, a drive assembly and a moving assembly 4.
[0026] The base 1 measures 1200×600×150mm (length×width×height), with a convex arc on the top surface of 800mm radius, allowing the bait to slide naturally to both sides. The base 1 has baffles 5 with a height of 200mm welded on both the front and rear sides.
[0027] Two conveyor belts 2 are installed on the left and right sides of the base 1, respectively, and are symmetrically inclined outward from bottom to top (inclination angle 30-45°). The conveyor belts 2 are 200mm wide, made of non-slip rubber with anti-slip textured surfaces, with a drive roller diameter of 120mm, a driven roller diameter of 80mm, and a center distance of 600mm. The bottoms of the two conveyor belts 2 are welded to the baffles 5 to form a semi-enclosed hopper for holding snail bait. Each conveyor belt 2 has multiple scrapers 6 evenly arranged circumferentially. These scrapers 6 are made of nylon + 30% glass fiber, 25mm high, and the interval between each pair of adjacent scrapers 6 is used to quantitatively hold the snail bait scraped by the scrapers.
[0028] The drive assembly includes a main pulley 31, a driven pulley 32, a flat belt 33, a reducer 34, and a motor 35. The main pulley 31 has a diameter of 100mm and is keyed to the drive roller of the left conveyor belt 2. The driven pulley 32 has a diameter of 100mm and is keyed to the drive roller of the right conveyor belt 2. The flat belt 33 connects the main pulley 31 and the driven pulley 32 in a cross-drive manner, enabling the main pulley 31 and the driven pulley 32 to rotate synchronously in opposite directions. The flat belt 33 can be made of polyurethane + Kevlar fiber composite belt (tensile strength ≥200MPa, elongation <5%) to resist aging in humid and hot environments. Axial drainage grooves (1mm deep, 2mm wide) can be opened at the root of the belt teeth of the flat belt 33 to accelerate the drainage of accumulated water and prevent slippage. The reducer 34 is a worm gear reducer 34 (reduction ratio 10:1, output torque 60N·m). The input end of the reducer 34 is connected to the motor 35, and the output end drives the main pulley 31. The motor 35 is a 57 stepper motor (0.75kW), with a speed control accuracy of ±0.5rpm (50rpm operating condition).
[0029] The mobile component 4 employs a tracked chassis, which is an existing type of walking mechanism that uses track chain transmission to replace wheel drive. In this embodiment, the tracked chassis includes two rubber tracks (150mm wide), each track containing 24 links. The chassis has a ground clearance of 80mm and a spring shock absorber travel of 30mm, allowing it to adapt to muddy and uneven terrain (slope ≤15°), thus solving the problem of limited mobility and ensuring the feeding coverage area.
[0030] refer to Figure 3 Specifically, each conveyor belt 2 has 20 connecting strips 61 evenly welded around its circumference. The connecting strips 61 extend along the width of the conveyor belt 2 and have threaded holes at both ends. The scraper 6 is detachably locked to the connecting strip 61 by M6 hexagonal screws 62 that mate with the threaded holes. The spacing between two adjacent scrapers 6 can be adjusted by removing and installing the scraper 6, thus adapting to snail bait of different sizes.
[0031] The workflow of this utility model is as follows:
[0032] First, the snail feed is piled up in the hopper area formed by the bottom of the two conveyor belts 2 and the baffle 5. Then, the motor 35 is started. After being reduced in speed by the reducer 34, the motor 35 drives the main pulley 31 to rotate counterclockwise. The counterclockwise rotation of the main pulley 31 causes the driven pulley 32 to rotate clockwise in the opposite direction through the cross transmission of the flat belt 33. The counterclockwise rotation of the main pulley 31 and the clockwise rotation of the driven pulley 32 respectively drive the corresponding conveyor belts 2 to transport the snail feed from the bottom upwards and outwards. In this way, the scraper can quantitatively scrape the snail feed, lift it to the highest point of the conveyor belt 2, and throw it outwards, so that it falls into the leech breeding pond for effective feeding.
[0033] It should be noted that the amount of snail feed within each pair of adjacent scraper intervals is the same. Therefore, the feeding amount can be set to several such intervals, and the snail feed within this number of intervals can be sprinkled each time to achieve quantitative feeding. To adjust the feeding amount, simply change the number of scraper intervals used each time.
[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A leech feeder, characterized in that, include: The base (1) has baffles (5) on the front and rear sides respectively; Two conveyor belts (2) are respectively set on the left and right sides of the base (1), and unfold outward from bottom to top. The bottom is surrounded by the baffle (5) to form a hopper. Each conveyor belt (2) is evenly arranged with multiple scrapers (6) along the circumference. The drive assembly includes a main pulley (31) and a driven pulley (32), which are respectively connected to the drive rollers of two conveyor belts (2), and the main pulley (31) and the driven pulley (32) are connected by a cross drive via a flat belt (33); The movable component (4) is set at the bottom of the base (1).
2. The leech feeder according to claim 1, characterized in that, The top surface of the base (1) is convex.
3. The leech feeder according to claim 1, characterized in that, The conveyor belt (2) is fixedly connected with a plurality of connecting strips (61) corresponding to the positions of the scraper (6). The scraper (6) is detachably connected to the connecting strips (61) by screws (62).
4. The leech feeder according to claim 1, characterized in that, The drive assembly also includes a reducer (34) and a motor (35); the motor (35) is connected to the main pulley (31) via the reducer (34).
5. The leech feeder according to claim 4, characterized in that, The motor (35) is a stepper motor.
6. The leech feeder according to claim 1, characterized in that, The mobile component (4) is a tracked chassis.