Bait feed extruding device
By incorporating a rotary cutting mechanism and a brush cleaning design, the problem of existing fish feed extruders being unable to dynamically adjust particle length has been solved, enabling efficient and safe production of multi-particle-size feed while reducing equipment costs and energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI SHENJU BAIT CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-05-08
AI Technical Summary
The existing fish feed extruders have an open extrusion head design, which makes it impossible to dynamically adjust the particle length and requires secondary processing, increasing equipment costs and energy consumption. At the same time, there is a risk of material breakage, which cannot meet the flexible production needs of multi-particle-size feeds in aquaculture.
The equipment employs a rotary cutting mechanism, including components such as a rotating shaft, rotary cutter, drive block, drive frame, and motor, to dynamically adjust the length of feed pellets. It is also equipped with a brush to clean the side wall of the extrusion disc to prevent sticking. Combined with a protective net and a removable collection bag, it ensures safety and extends the equipment's lifespan.
It enables dynamic adjustment of feed pellet length, prevents sticking, improves extrusion efficiency and quality, reduces equipment failure risk, extends service life, and meets the production needs of multi-particle-size feed.
Smart Images

Figure CN224206121U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fish feed extrusion technology, and more specifically, it relates to a fish feed extrusion device. Background Technology
[0002] Chinese patent application CN202322219412.1 discloses a fish feed extrusion device, relating to the field of fish feed extruder technology. It addresses the problem that most existing fish feed extruders use a flat rotating plate to move the feed downwards, leading to feed adhesion to the plate, resulting in low feed output and frequent breakage during extrusion. The device includes a screw conveyor at the lower end of the feeding box, with an extrusion head at one end. It also includes a transition hopper, located on the upper surface of the feeding box and welded to it. A feeding hopper is located on the upper surface of the transition hopper and welded to it. Two rotating shafts are located inside the feeding box, with a rotating plate surrounding each shaft. The outer wall of the rotating plate has protrusions welded to it, and these protrusions are arranged in multiple numbers.
[0003] Although the aforementioned utility model improves the adhesion problem during the feeding stage by setting a rotating plate with protrusions and an elastic rope in the transition hopper, its extrusion head adopts an open outlet design. This structure is only a static conical pipe and does not integrate any cutting components, resulting in the device only being able to output continuous strip or cake-shaped feed. This design forces subsequent secondary processing to rely on independent cutting equipment, which not only increases equipment costs and energy consumption, but also causes feed breakage risks due to material transfer. At the same time, the open outlet cannot dynamically adjust the particle length, which seriously restricts the flexible production needs of multi-particle-size feed in aquaculture, reflecting the current lack of integration of terminal functions.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a fish feed extrusion device in order to achieve a more practical purpose. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a fish feed extrusion device, which is achieved by the following specific technical means:
[0006] A fish feed extrusion device includes a main body, a hopper, an extrusion disc, and a drive mechanism. The disc has multiple sets of extrusion holes. A rotary cutting mechanism is provided on one side of the main body. The rotary cutting mechanism includes a rotating shaft rotatably mounted in the middle of the side wall of the extrusion disc. Multiple sets of rotary cutting blades are rotatably mounted on the outer wall of the rotating shaft at equal angles. A connecting shaft is rotatably mounted at one end of each set of rotary cutting blades. A drive block is mounted at one end of each set of connecting shafts. A drive frame is rotatably mounted on the common set of drive blocks. The drive frame is rotatably connected to the outer wall of the rotating shaft.
[0007] Preferably, each of the multiple sets of drive blocks has a drive groove on one side, and a drive shaft is slidably installed in each of the multiple sets of drive grooves. One end of each of the multiple sets of drive shafts is installed on the outer wall of the drive frame.
[0008] Preferably, a connecting frame is installed on the inner wall of the drive frame, the connecting frame is rotatably mounted on the outer wall of the rotating shaft, one end of the rotating shaft is connected to a first motor, a mounting base is installed on the side wall of the first motor, and the side wall of the mounting base is fixedly connected to the side wall of the main body.
[0009] Preferably, a gear ring is installed on the side wall of the drive frame, a gear is meshed on one side of the gear ring, and a second motor is driven to the side wall of the gear. The second motor is mounted on the connecting frame.
[0010] Preferably, each of the multiple sets of rotary cutters is provided with a brush on the back side for cleaning the side wall of the extrusion disc. The brush can abut against the extrusion disc and is made of nylon material.
[0011] Preferably, the drive mechanism includes a motor mounted on the main body, a pulley fixedly fitted on the outer wall of the motor's output end, a belt fitted on the outer wall of the pulley, and a transmission connection between the belt and the extrusion component of the main body. A protective net is detachably installed on the side wall of the main body, and the protective net covers the outer wall of the belt and the pulley.
[0012] Preferably, the inner wall of the mounting base is symmetrically provided with T-shaped grooves, and T-shaped sliders are slidably installed in both sets of T-shaped grooves, and the collection bag is installed in both sets of T-shaped sliders.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. This utility model achieves the cutting function through the cooperation of various components of the rotary cutting mechanism. The rotary cutting mechanism includes a rotating shaft, rotary cutting blade, connecting shaft, driving block, driving groove, driving frame, connecting frame, first motor, driving shaft, and second motor that cooperate with each other. The first motor drives the rotating shaft to rotate, thereby driving the rotary cutting blade to rotate. The second motor drives the gear to rotate, which meshes with the gear ring on the side wall of the driving frame, causing the driving frame to rotate. The driving shaft on the driving frame slides in the driving groove of the driving block, controlling the rotation speed and cutting frequency of the rotary cutting blade, thereby cutting the feed extruded from the extrusion hole, and the length of the cut feed particles can be dynamically adjusted.
[0015] 2. This utility model, through the cooperation of a second motor, gears, and a gear ring, enables multiple sets of rotary cutters to be in a closed state, thereby causing the brushes of the multiple sets of rotary cutters to abut against the side wall of the extrusion disc. The rotation of the first motor cleans the side wall of the extrusion disc, preventing feed residue and adhesion, ensuring unobstructed extrusion holes, and enabling stable and uniform feed extrusion. The protective net works in conjunction with the drive mechanism. A detachable protective net on the side wall of the main body cooperates with the belt and pulley of the drive mechanism. The protective net covers the outer wall of the belt and pulley, preventing operators from accidentally contacting the running belt and pulley, ensuring personnel safety, and simultaneously preventing debris from entering the belt drive system, avoiding equipment failure, and extending the equipment's service life. Attached Figure Description
[0016] Figure 1 This is a three-dimensional schematic diagram of the utility model. Figure 1 .
[0017] Figure 2 This is a three-dimensional schematic diagram of the utility model. Figure 2 .
[0018] Figure 3 This is a cross-sectional schematic diagram of the present invention.
[0019] Figure 4 yes Figure 3 Enlarged schematic diagram of structure A in the middle.
[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:
[0021] 1. Main body; 101. Hopper; 102. Extrusion disc; 103. Extrusion hole; 104. Drive mechanism; 2. Protective net; 3. Rotary cutting mechanism; 301. Rotary cutting blade; 302. Rotating shaft; 303. Connecting shaft; 304. Drive block; 305. Drive groove; 306. Drive frame; 307. Connecting frame; 308. First motor; 309. Drive shaft; 310. Second motor; 4. Mounting base; 5. Collection bag; 6. T-shaped slider; 7. T-shaped chute. 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:
[0024] As attached Figure 1 To be continued Figure 4 As shown:
[0025] This utility model provides a fish feed extrusion device, including a main body 1, a hopper 101, an extrusion disc 102, and a drive mechanism 104. The extrusion disc 102 has multiple sets of extrusion holes 103. A rotary cutting mechanism 3 is provided on one side of the main body 1. The rotary cutting mechanism 3 includes a rotating shaft 302 rotatably mounted in the middle of the side wall of the extrusion disc 102. Multiple sets of rotary cutting blades 301 are rotatably mounted on the outer wall of the rotating shaft 302 at equal angles. A connecting shaft 303 is rotatably mounted at one end of each set of rotary cutting blades 301. A drive block 304 is mounted at one end of each set of connecting shafts 303. A drive frame 306 is rotatably mounted on the common set of drive blocks 304. The drive frame 306 is rotatably connected to the outer wall of the rotating shaft 302.
[0026] Each of the multiple drive blocks 304 has a drive groove 305 on one side, and a drive shaft 309 is slidably installed in each of the multiple drive grooves 305. One end of each of the multiple drive shafts 309 is installed on the outer wall of the drive frame 306. This design allows the rotation of the drive frame 306 to be transmitted to the drive block 304 through the sliding of the drive shaft 309 in the drive groove 305, thereby controlling the rotation of the rotary cutter 301 and enabling the rotary cutter 301 to switch between cleaning and cutting functions.
[0027] The inner wall of the drive frame 306 is equipped with a connecting frame 307, which is rotatably mounted on the outer wall of the rotating shaft 302. One end of the rotating shaft 302 is connected to a first motor 308. A mounting base 4 is installed on the side wall of the first motor 308, and the side wall of the mounting base 4 is fixedly connected to the side wall of the main body 1. This structure ensures that the first motor 308 can stably drive the rotating shaft 302 to rotate, thereby driving the rotary cutter 301 to perform cutting operations, providing a stable power source for feed cutting, and ensuring the stability and reliability of the cutting process.
[0028] The drive frame 306 has a gear ring installed on its side wall, and a gear is meshed on one side of the gear ring. The gear is connected to a second motor 310 via a transmission connection on its side wall. The second motor 310 is mounted on the connecting frame 307. The second motor 310 drives the gear to rotate, which in turn drives the gear ring and the drive frame 306 to rotate, thereby controlling the rotation of the rotary cutter 301. It works in conjunction with the first motor 308 to clean the side wall of the extrusion disc 102 using a brush.
[0029] Each of the multiple rotary cutters 301 has a brush on its back side for cleaning the side wall of the extrusion disc 102. The brush can abut against the extrusion disc 102 and is made of nylon. During the rotation of the rotary cutter 301, the brush can clean the side wall of the extrusion disc 102 to prevent feed residue and adhesion to the extrusion disc 102, ensure the unobstructed flow of the extrusion hole 103, and enable the feed to be extruded stably and evenly, thereby improving the quality and efficiency of feed extrusion.
[0030] The drive mechanism 104 includes a motor mounted on the main body 1. A pulley is fixedly fitted on the outer wall of the motor's output end. A belt is fitted on the outer wall of the pulley and is connected to the extrusion component of the main body 1 via the belt. A protective net 2 is detachably installed on the side wall of the main body 1. The protective net 2 covers the outer wall of the belt and pulley. The protective net 2 plays a safety protection role, on the one hand preventing operators from accidentally contacting the running belt and pulley, ensuring personnel safety; on the other hand, preventing foreign objects from entering the belt drive system, avoiding equipment failure, and extending the service life of the equipment.
[0031] The mounting base 4 has symmetrically arranged T-shaped grooves 7 on its inner wall. T-shaped sliders 6 are slidably installed in both sets of T-shaped grooves 7. The two sets of T-shaped sliders 6 are used to install the collection bag 5. This design makes it very convenient to install and remove the collection bag 5, which is convenient for collecting the cut feed particles. It is also convenient for cleaning and replacing the collection bag 5, which improves the convenience and efficiency of operation in the production process.
[0032] Working principle of this embodiment: feed extrusion: the motor of the drive mechanism 104 drives the pulley to rotate, and the extrusion component of the main body 1 is operated through belt transmission, so that the fish feed in the hopper 101 is extruded from the extrusion hole 103 of the extrusion plate 102.
[0033] Feed cutting: The first motor 308 drives the rotating shaft 302 to rotate, which in turn drives the multiple sets of rotary cutters 301 on the outer wall of the rotating shaft 302 to rotate, cutting the feed extruded from the extrusion hole 103, and the length of the cut feed particles can be dynamically adjusted.
[0034] Extrusion disc cleaning: When the second motor 310, gear, and gear ring work together to make multiple sets of rotary cutters 301 in a closed state, the nylon brush on the back side of the rotary cutter 301 abuts against the side wall of the extrusion disc 102. The first motor 308 rotates to drive the rotary cutter 301 to rotate, thereby cleaning the side wall of the extrusion disc 102, preventing feed residue and adhesion, and ensuring that the extrusion hole 103 is unobstructed.
[0035] Safety protection: The protective net 2 that can be detachably installed on the side wall of the main body 1 covers the outer wall of the belt and pulley of the drive mechanism 104 to prevent operators from accidentally contacting the moving parts, ensuring personnel safety, while preventing foreign objects from entering the belt drive system, reducing equipment failures, and extending the service life of the equipment;
[0036] Collection: The cut feed pellets fall into the collection bag 5 installed on the mounting base 4 via the T-shaped slider 6 and the T-shaped groove 7. The T-shaped slider 6 can slide in the T-shaped groove 7, which facilitates the installation and removal of the collection bag 5 and makes it convenient to collect and clean the feed pellets.
[0037] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A fish feed extrusion device, comprising a main body (1), a hopper (101), an extrusion disc (102), and a drive mechanism (104), characterized in that: The extrusion disc (102) has multiple sets of extrusion holes (103). A rotary cutting mechanism (3) is provided on one side of the main body (1). The rotary cutting mechanism (3) includes a rotating shaft (302) rotatably mounted in the middle of the side wall of the extrusion disc (102). Multiple sets of rotary cutting blades (301) are rotatably mounted on the outer wall of the rotating shaft (302) at equal angles. A connecting shaft (303) is rotatably mounted on one end of each set of rotary cutting blades (301). A driving block (304) is mounted on one end of each set of connecting shafts (303). A driving frame (306) is rotatably mounted on the common set of driving blocks (304). The driving frame (306) is rotatably connected to the outer wall of the rotating shaft (302).
2. The fish feed extrusion device according to claim 1, characterized in that: Each of the multiple sets of drive blocks (304) has a drive groove (305) on one side, and a drive shaft (309) is slidably installed in each of the multiple sets of drive grooves (305). One end of each of the multiple sets of drive shafts (309) is installed on the outer wall of the drive frame (306).
3. The fish feed extrusion device according to claim 2, characterized in that: A connecting frame (307) is installed on the inner wall of the drive frame (306). The connecting frame (307) is rotatably mounted on the outer wall of the rotating shaft (302). One end of the rotating shaft (302) is connected to a first motor (308). A mounting base (4) is installed on the side wall of the first motor (308). The side wall of the mounting base (4) is fixedly connected to the side wall of the main body (1).
4. The fish feed extrusion device according to claim 3, characterized in that: A gear ring is installed on the side wall of the drive frame (306), and a gear is meshed on one side of the gear ring. A second motor (310) is connected to the side wall of the gear. The second motor (310) is mounted on the connecting frame (307).
5. The fish feed extrusion device according to claim 1, characterized in that: Each of the multiple sets of rotary cutters (301) is provided with a brush on the back side for cleaning the side wall of the extrusion disc (102). The brush is able to abut against the extrusion disc (102) and is made of nylon.
6. The fish feed extrusion device according to claim 1, characterized in that: The drive mechanism (104) includes a motor mounted on the main body (1). A pulley is fixedly fitted on the outer wall of the output end of the motor. A belt is fitted on the outer wall of the pulley and is connected to the extrusion component of the main body (1) through the belt. A protective net (2) is detachably installed on the side wall of the main body (1). The protective net (2) covers the outer wall of the belt and the pulley.
7. The fish feed extrusion device according to claim 4, characterized in that: The inner wall of the mounting base (4) is symmetrically provided with T-shaped grooves (7), and T-shaped sliders (6) are slidably installed in both sets of T-shaped grooves (7). The two sets of T-shaped sliders (6) are used to install the collection bag (5).
Citation Information
Patent Citations
Bait feed extruding device
CN220557365U