Air seal machine blanking device for automatic bait casting machine
By optimizing the sealing structure of the feeder and the design of the feed roller, the problems of poor feed flow and blockage were solved, achieving stable feed delivery and efficient equipment operation, thus meeting the needs of large-scale and precision aquaculture.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-18
- Publication Date
- 2026-03-31
AI Technical Summary
The existing airlock feeder has poor fit between the feed roller and the main body cavity of the feeder, which causes air leakage during the operation of the feeding fan. This generates an upward force that counteracts the weight of the bait, resulting in poor feeding and blockage. In addition, the drive structure of the feed roller is not conducive to stable material conveying, affecting the continuity and uniformity of the feeder.
A sealed airlock feeder was designed. By matching the diameter of the feeding roller with the diameter of the feeder's main cavity, and using a sealing cover and sealing ring, gaps are reduced. The feeding roller adopts a central part, frame part and feeding blade structure to ensure rotational stability. An inclined transition surface and countersunk hole design are set to avoid airflow leakage and bolt interference, thereby improving conveying stability.
It effectively prevents airflow leakage, ensures smooth bait drop, improves the stability and reliability of material conveying, enhances the working efficiency and reliability of automatic feeders, and reduces equipment maintenance costs.
Smart Images

Figure CN224055066U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of feeding machine equipment, and in particular relates to a shut-off feeder for an automatic feeding machine. Background Technology
[0002] In modern aquaculture and livestock farming, the application of automatic feeders has greatly improved feeding efficiency and reduced labor costs. As a key component of automatic feeders, the blower feeder undertakes the important task of quantitatively and stably delivering stored feed to the feeding system. Its working principle is that the feed entering the feeder body from the feed inlet is gradually pushed to the discharge outlet by the rotation of the internal feed roller, and then enters the feeding pipe. With the help of the feeding fan, the feed is accurately delivered to the designated area to achieve automated feeding.
[0003] However, existing airlock feeders have several shortcomings in terms of structural design and component fit. Specifically, due to the poor fit between the components, especially the structure between the feeding roller and the main body of the feeder, there are large gaps. When the feeding fan is running, the high-speed airflow leaks through these gaps, creating an upward force at the gap between the feeding roller and the main body of the feeder. This force counteracts the weight of the bait, preventing it from falling smoothly from the outlet, and even causing blockages or material breaks, seriously affecting the continuity and uniformity of feeding. In addition, the drive structure of the feeding roller is not conducive to stable material conveying, further exacerbating the problem of poor feeding.
[0004] These defects not only reduce the working efficiency of automatic feeders, but also increase equipment maintenance costs, making it difficult to meet the needs of large-scale and precision farming. Therefore, practitioners have optimized and improved the structure of the airlock feeder. Utility Model Content
[0005] The purpose of this utility model is to provide a blower-off feeder for automatic feeders, which solves the problems of poor fit between the feeding roller and the main cavity of the feeder, resulting in air leakage during operation of the feeding fan, generating an upward force that offsets the weight of the feed, causing poor feeding and blockage, and the feeding roller drive structure is not conducive to stable material conveying.
[0006] The present invention achieves the above objectives through the following technical solution: a shut-off feeder for an automatic feeder, comprising a feeding pipe and a feeding fan that cooperate with each other, wherein the feeding fan is placed at one end of the feeding pipe and its air outlet communicates with the cavity of the feeding pipe, and a shut-off feeder communicating with the cavity is provided on the upper side wall of the feeding pipe.
[0007] The airlock feeder includes a hollow feeder body with an inlet and an outlet at the top and bottom, respectively. Sealing covers are fixed to both ends of the feeder body, and bearings are installed on the inner walls of each sealing cover. A feeding roller is positioned between two sets of bearings, with the diameter of the feeding roller matching the cavity diameter of the feeder body. A drive motor is mounted on the outer wall of one of the sealing covers, with its rotating shaft passing through the sealing cover and positioned inside the feeding roller. A threaded hole is provided on the rotating shaft of the drive motor, and a through hole is provided on the outer wall of the feeding roller. A connecting bolt is installed within the through hole, and the end of the connecting bolt is connected to the threaded hole.
[0008] Furthermore, the diameter of the feed inlet is the same as the diameter of the discharge outlet, and both the feed inlet and the discharge outlet are provided with inclined transition surfaces.
[0009] Furthermore, a sealing ring is provided at the connection between the sealing cover and the main body of the feeder, and the sealing ring is made of rubber.
[0010] Furthermore, the feeding roller includes a central portion for connecting the bearing, and a cylindrical frame portion is provided on the outer side of the central portion. A plurality of feeding blades are evenly distributed on the outer wall of the frame portion along the circumferential direction.
[0011] Furthermore, a shock-absorbing pad is provided between the drive motor and the sealing cover plate, and the shock-absorbing pad is made of silicone.
[0012] Furthermore, a countersunk hole is provided at the through hole, and the screwing part of the connecting bolt is embedded in the countersunk hole.
[0013] Beneficial effects: This utility model has a reasonable design, simple and stable structure, and strong practicality, and has the following beneficial effects:
[0014] 1. Significantly optimized sealing structure: The diameter of the feeding roller matches the diameter of the cavity of the feeder body, effectively filling the gap between the feeding roller and the cavity of the feeder body. This makes it difficult for airflow to leak when the feeding fan is running, avoiding the problem of upward force due to air leakage offsetting the weight of the bait. This ensures that the bait can fall smoothly from the outlet under the influence of gravity and the feeding roller, guaranteeing the smoothness of feeding.
[0015] 2. Enhanced conveying stability through material feeding structure: The material feeding roller adopts a unique structural design consisting of a central section, a frame section, and material feeding blades. The central section is stably connected to the bearing, ensuring the stability of the material feeding roller during rotation. The cylindrical frame section provides solid support for the material feeding blades. The material feeding blades, which are evenly distributed along the circumference, can effectively grab and push the bait, making the material evenly stressed during conveying and less prone to jamming or breakage, thus further improving the stability and reliability of material conveying.
[0016] 3. Bolt design ensures smooth conveying: The through hole is set with a countersunk hole, so that the screwing part of the connecting bolt is embedded in the countersunk hole. This design avoids the bolt protruding and interfering with the material conveying. The bait will not be obstructed by the bolt during the conveying process, ensuring the smoothness of the material conveying and further improving the working efficiency and reliability of the automatic feeder. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the present invention;
[0018] Figure 2 This is an exploded structural diagram of the airlock feeder of this utility model.
[0019] In the diagram: 1-feeding pipe, 2-feeding fan, 3-shutdown fan feeder;
[0020] 301-Main body of the feeder, 302-Inlet, 303-Outlet, 304-Sealing cover, 305-Bearing, 306-Feeding roller, 307-Drive motor, 308-Threaded hole, 309-Through hole, 3010-Connecting bolt;
[0021] 3061 - Central part, 3062 - Frame part, 3063 - Material feeding blade. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] Example 1:
[0024] Combination Figure 1-2The air-closing feeder shown is mainly composed of a feeding pipe 1 and a feeding fan 2 that cooperate with each other. The feeding fan 2 is stably installed at one end of the feeding pipe 1, and its air outlet is precisely connected to the cavity of the feeding pipe 1 and kept unobstructed, so that air can be sent into the feeding pipe 1 at a certain pressure and flow rate to provide power for the feeding of bait. An air-closing feeder 3 is set on the upper side wall of the feeding pipe 1. The air-closing feeder 3 is connected to the cavity of the feeding pipe 1 and is a key component for realizing quantitative and stable feeding of bait.
[0025] The feeder 3 includes a hollow feeder body 301. The feeder body 301 has an inlet 302 and an outlet 303 at its upper and lower ends, respectively. The inlet 302 connects to an external bait storage device, facilitating bait entry into the feeder body 301. The outlet 303 connects to the cavity of the feeding pipe 1, allowing bait to smoothly enter the feeding pipe 1 and be discharged by the feeding fan 2. Sealing covers 30 are bolted to both ends of the feeder body 301. 4. The shape of the sealing cover plate 304 is adapted to the shape of the end of the feeder body 301, and an annular protrusion is provided on the contact surface with the feeder body 301 to enhance the sealing of the connection. Bearings 305 are fixedly installed on the inner wall of the sealing cover plate 304. The bearings 305 have good rotational accuracy and load-bearing capacity. A feeding roller 306 is installed between the two sets of bearings 305. The diameter of the feeding roller 306 is designed to match the cavity diameter of the feeder body 301, so that the feeding roller... The feed roller 306 can rotate within the feeder body 301 while minimizing the gap between itself and the cavity wall to reduce the possibility of air leakage. The surface of the feed roller 306 is finely machined to be smooth and flat to reduce the resistance of the bait during the conveying process. A drive motor 307 is fixedly installed on the outer wall of one of the sealing cover plates 304. The rotating shaft of the drive motor 307 passes through the sealing cover plate 304 and extends into the feed roller 306. A threaded hole 308 is pre-machined on the rotating shaft of the drive motor 307. At the same time, a through hole 309 is provided at a corresponding position on the outer wall of the feed roller 306. A connecting bolt 3010 is installed in the through hole 309. After the connecting bolt 3010 passes through the through hole 309, its end is threadedly connected to the threaded hole 308. By tightening the connecting bolt 3010, the rotating shaft of the drive motor 307 and the feed roller 306 can be firmly connected together, so that the drive motor 307 can drive the feed roller 306 to rotate, realizing the feeding function.
[0026] In this embodiment, the inlet 302 and the outlet 303 have the same diameter. This design ensures that the material can maintain a stable flow state when passing through the airlock feeder 3. Both the inlet 302 and the outlet 303 are provided with inclined transition surfaces. The inclined transition surface of the inlet 302 can guide the bait to enter the feeder body 301 quickly and smoothly, reducing the dwell time of the bait at the inlet. The inclined transition surface of the outlet 303 allows the bait to naturally blend with the airflow in the feeding pipe 1 when it leaves the feeder body 301, avoiding the problem of uneven bait dispersion caused by sudden changes in direction.
[0027] In this embodiment, a sealing ring is provided at the connection between the sealing cover plate 304 and the feeder body 301. The sealing ring plays a key role in ensuring the sealing performance of the equipment. The sealing ring is made of rubber material, which has sufficient elasticity to achieve a tight fit and can maintain good resistance to deformation, preventing elastic failure due to long-term compression.
[0028] In this embodiment, the feeding roller 306 includes a central portion 3061 for connecting the bearing 305. The outer diameter of the central portion 3061 is precisely matched with the inner ring diameter of the bearing 305. A cylindrical frame portion 3062 is provided on the outside of the central portion 3061. The inner wall of the frame portion 3062 is connected to the central portion 3061 by uniformly distributed reinforcing ribs. A plurality of feeding blades 3063 are uniformly distributed along the circumference on the outer wall of the frame portion 3062. The number of feeding blades 3063 is adjusted according to the actual feeding requirements.
[0029] In this embodiment, a shock-absorbing pad is provided between the drive motor 307 and the sealing cover plate 304. The shock-absorbing pad is made of silicone material, which can effectively absorb and buffer the vibration energy generated by the drive motor 307 during operation, reduce the operating noise of the equipment, and improve the safety and reliability of the equipment operation.
[0030] In this embodiment, a countersunk hole is provided at the through hole 309. The diameter of the countersunk hole is 1-2 mm larger than the outer diameter of the screwing part of the connecting bolt 3010. This ensures that the screwing part of the connecting bolt 3010 can be smoothly inserted and that sufficient assembly accuracy is guaranteed. The design of the screwing part of the connecting bolt 3010 being embedded in the countersunk hole effectively avoids the screwing part protruding from the surface of the feeding roller 306, preventing interference and scraping with the bait during the feeding process. It also prevents the bait from accumulating and clogging due to uneven force, ensuring that the bait can move smoothly and steadily along the inner wall of the feeder body 301 under the drive of the feeding roller 306.
[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A wind machine feeder for automatic feeding machine, comprising a feeding pipe (1) and a feeding fan (2) which are matched with each other, the feeding fan (2) is placed at one end of the feeding pipe (1), and its air outlet communicates with the cavity of the feeding pipe (1), characterized in that: The feeding pipe (1) is provided with a draft fan feeder (3) communicated with the cavity thereof on the upper side wall thereof; The draft fan feeder (3) comprises a feeder body (301) which is hollow, the feeder body (301) is provided with an inlet (302) and an outlet (303) at the upper and lower sides thereof respectively, the feeder body (301) is fixedly provided with a sealing cover plate (304) on the end walls thereof, the inner wall of the sealing cover plate (304) is provided with a bearing (305), a stirring roller (306) is arranged between the two bearings (305), the diameter of the stirring roller (306) matches the cavity diameter of the feeder body (301), a driving motor (307) is arranged on the outer side wall of one of the sealing cover plates (304), the rotating shaft of the driving motor (307) penetrates the sealing cover plate (304) and is arranged in the stirring roller (306), the rotating shaft of the driving motor (307) is provided with a threaded hole (308), the outer side wall of the stirring roller (306) is provided with a through hole (309), the through hole (309) is provided with a connecting bolt (3010), and the end of the connecting bolt (3010) is connected with the threaded hole (308).
2. A wind gate feeder for an automatic feeder according to claim 1, characterized in that: The diameter of the inlet (302) is the same as that of the outlet (303), and an inclined transition surface is arranged at the positions of the inlet (302) and the outlet (303).
3. A wind gate feeder for an automatic feeder according to claim 2, wherein: A sealing ring is arranged at the connection position of the sealing cover plate (304) and the feeder body (301), and the sealing ring is made of rubber.
4. A wind gate feeder for an automatic feeder according to claim 3, wherein: The stirring roller (306) comprises a center part (3061) for connecting the bearing (305), the outer side of the center part (3061) is provided with a frame part (3062) in a cylindrical shape, and the outer wall of the frame part (3062) is uniformly provided with a plurality of stirring blades (3063) in the circumferential direction.
5. A wind gate feeder for an automatic feeder according to claim 4, wherein: A damping pad is arranged between the driving motor (307) and the sealing cover plate (304), and the damping pad is made of silica gel.
6. A wind gate feeder for an automatic feeder according to claim 5, wherein: A counterbore is arranged at the through hole (309), and the screwing part of the connecting bolt (3010) is embedded in the counterbore.