Freshwater fish oil extraction device

Abstract

This utility model relates to the field of fish oil extraction technology and discloses a freshwater fish oil extraction device, including a cooking tank. A bolt conveyor is fixedly connected to the outer wall of the cooking tank, and a protective shell is fixedly connected to the outer wall of the bolt conveyor. A bracket is fixedly connected to the side wall of the protective shell, and a connecting pipe is fixedly connected to the outer wall of the cooking tank. A separator is fixedly connected to one end of the connecting pipe, and a slide rail plate is fixedly connected to the side wall of the protective shell. An adjustment component is provided at the bottom of the slide rail plate. The adjustment component includes a double-headed hydraulic cylinder, the top of which is fixedly connected to the bottom of the slide rail plate. In this utility model, the double-headed hydraulic cylinder drives the connecting plate to move, which in turn drives a second motor and a slider to slide inside the slide rail plate. The second motor drives the crushing roller to move, solving the problem that fish oil extraction devices without adjustable crushing gaps cannot adapt to differences in raw materials, thus improving the practicality of the fish oil extraction device.

Description

Technical Field

[0001] This utility model relates to the field of fish oil extraction technology, and in particular to a freshwater fish oil extraction device. Background Technology

[0002] In the freshwater fish processing industry, fish oil, as a component with high nutritional and economic value, has always been a key focus for efficient extraction. A freshwater fish oil extraction device has been developed to address this need. It aims to separate fish oil from freshwater fish raw materials through a series of orderly processing steps, meeting the market demand for high-quality fish oil. This device integrates multiple technologies such as mechanical processing and separation purification, forming a complete production process from raw material pretreatment to final fish oil collection, providing strong technical support for the in-depth utilization of freshwater fish resources. Existing fish oil extraction devices typically employ fixed-structure crushing equipment in the raw material pretreatment stage. Their mechanical structure generally includes a fixed crushing chamber containing crushing components, such as a set of crushing blades or a crushing hammer, driven by a single motor. The technical principle is that the motor drives the crushing components to rotate at high speed, impacting and shearing the freshwater fish raw material fed into the crushing chamber, thereby breaking the raw material into smaller particles for subsequent fish oil extraction. The positions of these crushing components are relatively fixed, and the crushing space formed during the process remains constant. However, existing fish oil extraction devices have a significant drawback: the crushing gaps in their crushing structure are fixed. Since different species of freshwater fish vary in body size, meat firmness, and other aspects, even fish of the same species can differ in their raw material condition due to factors such as growth environment and individual size. The fixed crushing gaps cannot be adjusted to accommodate these differences, often resulting in unsatisfactory crushing effects. Therefore, a new freshwater fish oil extraction device is proposed to address this problem. Summary of the Invention

[0003] To overcome the above shortcomings, this utility model provides a freshwater fish oil extraction device, which aims to improve the existing fish oil extraction devices that do not have the function of adjusting the crushing gap, thus failing to adapt to the differences in raw materials.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A freshwater fish oil extraction device includes a cooking tank, a bolt conveyor fixedly connected to the outer wall of the cooking tank, a protective shell fixedly connected to the outer wall of the bolt conveyor, a bracket fixedly connected to the side wall of the protective shell, a connecting pipe fixedly connected to the outer wall of the cooking tank, a separator fixedly connected to one end of the connecting pipe, a slide rail plate fixedly connected to the side wall of the protective shell, and an adjustment component provided at the bottom of the slide rail plate. The adjustment assembly includes a double-headed hydraulic cylinder. The top of the double-headed hydraulic cylinder is fixedly connected to the bottom of the slide rail plate. A connecting plate is fixedly connected to the output end of the double-headed hydraulic cylinder. A second motor is fixedly connected to the side wall of the connecting plate. A crushing roller is fixedly connected to the output end of the second motor. A slider is fixedly connected to the bottom of the second motor. The side wall of the slider is slidably connected inside the slide rail plate.

[0005] As a further description of the above technical solution: A first motor is fixedly connected to the top of the cooking tank, and a rotating shaft is fixedly connected to the output end of the first motor.

[0006] As a further description of the above technical solution: A stirring blade is fixedly connected to the outer wall of the rotating shaft, and the outer wall of the stirring blade is rotatably connected to the inside of the cooking tank.

[0007] As a further description of the above technical solution: A hollow column is fixedly connected to the outer wall of the rotating shaft, and a limit ring is fixedly connected inside the hollow column.

[0008] As a further description of the above technical solution: The limiting ring is slidably connected to a sliding column, and the outer wall of the sliding column is slidably connected to the inside of the hollow column.

[0009] As a further description of the above technical solution: A spring is provided on the outer wall of the sliding column. One end of the spring is fixedly connected to the side wall of the limiting ring, and the other end of the spring is fixedly connected to the outer wall of the sliding column.

[0010] As a further description of the above technical solution: A scraper is fixedly connected to one end of the sliding column, and the outer wall of the scraper is rotatably connected to the inside of the cooking tank.

[0011] This utility model has the following beneficial effects: 1. In this utility model, the connecting plate is driven to move by a double-headed hydraulic cylinder, which in turn drives the second motor and the slider to slide inside the slide rail plate. Then, the second motor drives the crushing roller to move inside the protective shell, thereby achieving the effect of adjusting the crushing gap. This solves the problem that fish oil extraction devices without the function of adjusting the crushing gap cannot adapt to the differences in raw materials, and improves the practicality of the fish oil extraction device.

[0012] In this invention, a first motor drives a rotating shaft to rotate, which in turn causes the stirring blades on the outer wall to rotate. Simultaneously, the rotating shaft moves the hollow column on the outer wall. As the hollow column rotates, it also drives the sliding column and scraper to rotate. The sliding column is then pulled out by a spring, allowing the scraper to adapt to the interior of the cooking tank and scrape away debris. This achieves the effects of stirring and cleaning the interior of the cooking tank, solving the problem of material stagnation and accumulation due to lack of stirring, where heat can only be transferred through conduction and natural convection from the tank wall, resulting in slow heating in the central area and overheating and coking of material near the tank wall, leading to low heat transfer efficiency. This invention improves the stability of the oil extraction device. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of a freshwater fish oil extraction device proposed in this utility model; Figure 2 This is a schematic diagram of the outer wall structure of the bolt conveyor of a freshwater fish oil extraction device proposed in this utility model; Figure 3 This is a schematic diagram of the outer wall structure of the protective shell of a freshwater fish oil extraction device proposed in this utility model; Figure 4 This is a schematic diagram of the inner wall structure of the protective shell of a freshwater fish oil extraction device proposed in this utility model; Figure 5 This is a schematic cross-sectional view of the cooking tank of a freshwater fish oil extraction device proposed in this utility model. Figure 6 This is a schematic diagram of the outer wall structure of the rotating shaft of a freshwater fish oil extraction device proposed in this utility model; Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0014] Legend: 1. Protective shell; 2. Bolt conveyor; 3. Connecting pipe; 4. Separator; 5. First motor; 6. Support; 7. Double-headed hydraulic cylinder; 8. Connecting plate; 9. Second motor; 10. Sliding block; 11. Crushing roller; 12. Cooking tank; 13. Agitator blade; 14. Rotating shaft; 15. Scraper; 16. Hollow column; 17. Sliding column; 18. Limiting ring; 19. Spring; 20. Slide rail plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Reference Figure 1 - Figure 4 The present invention provides an embodiment of a freshwater fish oil extraction device, comprising a cooking tank 12, a bolt conveyor 2 fixedly connected to the outer wall of the cooking tank 12, the bolt conveyor 2 consisting of spiral blades, a U-shaped trough, a drive motor and a sealing end cap, used to convey crushed fish material to the cooking tank 12 in a sealed manner to prevent oil oxidation and odor loss. This is prior art and will not be described in detail here. A protective shell 1 is fixedly connected to the outer wall of the bolt conveyor 2, a bracket 6 is fixedly connected to the side wall of the protective shell 1, a connecting pipe 3 is fixedly connected to the outer wall of the cooking tank 12, a separator 4 is fixedly connected to one end of the connecting pipe 3, a slide rail plate 20 is fixedly connected to the side wall of the protective shell 1, and an adjustment component is provided at the bottom of the slide rail plate 20. The adjustment assembly includes a double-headed hydraulic cylinder 7, which drives the connecting plate 8 and the second motor 9 to reciprocate along the slide rail 20, thereby dynamically adjusting the gap between the two crushing rollers 11. This enables precise crushing of freshwater fish raw materials of different sizes and meat firmness, improving crushing uniformity and reducing subsequent cooking energy consumption. The top of the double-headed hydraulic cylinder 7 is fixedly connected to the bottom of the slide rail 20, and the output end of the double-headed hydraulic cylinder 7 is fixedly connected to the connecting plate 8. The second motor 9 is fixedly connected to the side wall of the connecting plate 8, and the second motor 9 slides along the slide rail 20 in conjunction with the slider 10. Lateral displacement drives the crushing roller 11 to complete the gap adjustment, achieving the effect of adaptive crushing of raw materials of different specifications, avoiding oil loss caused by over-crushing or under-crushing. The output end of the second motor 9 is fixedly connected to the crushing roller 11, which is made of high-strength alloy steel and the surface is quenched to improve wear resistance. Its function is to shear, squeeze and crush freshwater fish raw materials in high-speed rotation, which is common knowledge and will not be elaborated on here. The bottom of the second motor 9 is fixedly connected to the slider 10, and the side wall of the slider 10 is slidably connected to the inside of the slide rail plate 20.

[0017] Reference Figure 5 - Figure 7A first motor 5 is fixedly connected to the top of the cooking tank 12. A rotating shaft 14 is fixedly connected to the output end of the first motor 5. An stirring blade 13 is fixedly connected to the outer wall of the rotating shaft 14. The outer wall of the stirring blade 13 is rotatably connected inside the cooking tank 12. A hollow column 16 is fixedly connected to the outer wall of the rotating shaft 14. A limit ring 18 is fixedly connected inside the hollow column 16. A sliding column 17 is slidably connected inside the limit ring 18. The outer wall of the sliding column 17 is slidably connected inside the hollow column 16. A spring 19 is provided on the outer wall of the sliding column 17. The spring 19 cooperates with the limit ring 18 to move within the hollow column 16. The elastic telescopic movement pushes the sliding column 17 to keep the scraper 15 in close contact with the tank wall, achieving the effect of continuous wall cleaning as it rotates with the rotating shaft 14, thus improving heat transfer efficiency. One end of the spring 19 is fixedly connected to the side wall of the limiting ring 18, and the other end of the spring 19 is fixedly connected to the outer wall of the sliding column 17. One end of the sliding column 17 is fixedly connected to the scraper 15, which is used to scrape off the fish residue attached to the inner wall of the cooking tank 12 in a timely manner, thereby avoiding the residue from burning and affecting the flavor and color of the fish oil, reducing the frequency of cleaning, and lowering production costs. The outer wall of the scraper 15 is rotatably connected to the inside of the cooking tank 12.

[0018] Working principle: When using the freshwater fish oil extraction device, the raw material first enters the crushing area inside the protective shell 1. The double-headed hydraulic cylinder 7 drives the connecting plate 8 to move through the output end according to the differences in the size and firmness of the freshwater fish raw material. The connecting plate 8 drives the second motor 9 and the bottom slider 10 to slide along the slide rail 20, thereby adjusting the gap between the crushing rollers 11 on both sides. When the second motor 9 starts, the crushing rollers 11 rotate at high speed, and the raw material is crushed in a targeted manner using the adjusted appropriate gap. The crushed raw material is transported to the cooking tank 12 by the bolt conveyor 2, realizing the flexible adjustment of the crushing gap and ensuring that raw materials in different states can be crushed evenly, laying a good foundation for the subsequent extraction process. Subsequently, the cooking tank 12 begins to heat and cook the crushed raw materials. At the same time, the first motor 5 drives the rotating shaft 14 to rotate. The rotating shaft 14 drives the stirring blades 13 to stir the raw materials in the tank, so that the raw materials are heated evenly and avoid local overheating or underheating. During the rotation of the rotating shaft 14, the hollow column 16 rotates synchronously with it. The sliding column 17 pushes the scraper 15 to fit tightly against the inner wall of the cooking tank 12 under the elastic force of the spring 19. When the scraper 15 rotates with the rotating shaft 14, it can scrape off the raw material residue attached to the tank wall in time, preventing the residue from charring and affecting the quality of fish oil. After cooking, the material enters the separator 4 through the connecting pipe 3 to separate the fish oil from other components. The whole process is highly efficient and adaptable to the characteristics of different raw materials, improving the efficiency and quality of fish oil extraction.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A freshwater fish oil extraction device, comprising a cooking tank (12), characterized in that: The outer wall of the cooking tank (12) is fixedly connected to a bolt conveyor (2), the outer wall of the bolt conveyor (2) is fixedly connected to a protective shell (1), the side wall of the protective shell (1) is fixedly connected to a bracket (6), the outer wall of the cooking tank (12) is fixedly connected to a connecting pipe (3), one end of the connecting pipe (3) is fixedly connected to a separator (4), the side wall of the protective shell (1) is fixedly connected to a slide rail plate (20), and the bottom of the slide rail plate (20) is provided with an adjustment component; The adjustment assembly includes a double-headed hydraulic cylinder (7), the top of which is fixedly connected to the bottom of the slide rail plate (20). The output end of the double-headed hydraulic cylinder (7) is fixedly connected to a connecting plate (8). The side wall of the connecting plate (8) is fixedly connected to a second motor (9). The output end of the second motor (9) is fixedly connected to a crushing roller (11). The bottom of the second motor (9) is fixedly connected to a slider (10). The side wall of the slider (10) is slidably connected inside the slide rail plate (20).

2. The freshwater fish oil extraction device according to claim 1, characterized in that: The top of the cooking tank (12) is fixedly connected to a first motor (5), and the output end of the first motor (5) is fixedly connected to a rotating shaft (14).

3. The freshwater fish oil extraction device according to claim 2, characterized in that: The outer wall of the rotating shaft (14) is fixedly connected to a stirring blade (13), and the outer wall of the stirring blade (13) is rotatably connected to the inside of the cooking tank (12).

4. The freshwater fish oil extraction device according to claim 3, characterized in that: A hollow column (16) is fixedly connected to the outer wall of the rotating shaft (14), and a limit ring (18) is fixedly connected inside the hollow column (16).

5. The freshwater fish oil extraction device according to claim 4, characterized in that: The limiting ring (18) is slidably connected to a sliding column (17), and the outer wall of the sliding column (17) is slidably connected to the inside of the hollow column (16).

6. The freshwater fish oil extraction device according to claim 5, characterized in that: A spring (19) is provided on the outer wall of the sliding column (17). One end of the spring (19) is fixedly connected to the side wall of the limiting ring (18), and the other end of the spring (19) is fixedly connected to the outer wall of the sliding column (17).

7. The freshwater fish oil extraction device according to claim 6, characterized in that: One end of the sliding column (17) is fixedly connected to a scraper (15), and the outer wall of the scraper (15) is rotatably connected to the inside of the cooking tank (12).

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