Efficient solid-liquid separation device for fish oil production

Abstract

The utility model provides an efficient solid-liquid separation device for fish oil production, which comprises a base, a shell, a conical oil groove and a feed pipe, fish feed enters an extrusion shaft pipe from the feed pipe and enters an extrusion cavity from a feed hole, the outer wall of the extrusion shaft pipe is coaxially provided with a spiral blade, the extrusion shaft pipe is sleeved with an extrusion cylinder, one end of the extrusion cylinder is provided with a slag outlet hole, and the other end of the extrusion cylinder is provided with a spiral blade. The outer wall of the extrusion cylinder is sleeved with a spiral strip, a scraping strip is arranged on the spiral strip, the spiral strip drives the scraping strip to scrape oil on the outer wall of the extrusion cylinder, when the solid-liquid separation device works, oil on the outer wall of the extrusion cylinder is scraped out, the oil outlet efficiency is improved, when an oil outlet hole is blocked by impurities, the impurities are scraped off, and the oil outlet hole is prevented from being blocked; one end of the movable filter screen mechanism penetrates through the side wall of the shell and extends out of the shell, impurities in the fish oil are further filtered out, the impurities are conveyed into a fish residue groove outside the shell, follow-up treatment is facilitated, and the solid-liquid separation effect is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of solid-liquid separation devices, and in particular to a high-efficiency solid-liquid separation device for fish oil production. Background Technology

[0002] Fish oil generally refers to the oil obtained from fatty fish through processes such as high-temperature steam cooking, pressing, and purification. The main component of fish oil is omega-3 fatty acids, containing small amounts of vitamins A and D. Further processing separates high-purity fish oil, which is then packaged into edible gels and dried to remove excess water, resulting in fish oil capsules. These capsules are a health food product, with DHA (docosahexaenoic acid) and EPA (eicosapentaenoic acid) as their main active ingredients, which help regulate blood lipids. The pressing process is a crucial step in fish oil production. Different production equipment and processes result in varying production efficiency and quality. The fish oil production process primarily relies on a solid-liquid separation device. After high-temperature steam cooking, the fish feed is fed into this device, where it is continuously compressed by the spiral blades. Water and oil are extracted, while the fish meat and bones are compressed into a cake-like shape, thus achieving solid-liquid separation. In existing technologies, solid-liquid separation devices for fish oil production generally adopt a screw extrusion structure. The material is extruded by the rotation of the screw, and the fish oil flows out from the screen holes set on the extrusion cylinder. Due to some impurities clogging the screen holes when the oil is discharged, the oil discharge is slow, which affects the efficiency of solid-liquid separation. Moreover, after the device stops, the fish oil is highly adhesive and easily solidifies, so it adheres to the outside of the extrusion cylinder and is not easy to clean. Utility Model Content

[0003] In view of this, the present invention proposes a high-efficiency solid-liquid separation device for fish oil production in order to solve the problems mentioned above.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A high-efficiency solid-liquid separation device for fish oil production includes a base, a shell on top of the base, a conical oil groove at the bottom of the shell, a first rotating shaft rotatably mounted inside the shell, one end of the first rotating shaft passing through the shell and connected to the output shaft of a reducer, and the other end connected to an extrusion shaft tube, the end of the extrusion shaft tube away from the first rotating shaft being rotatably connected to a bracket, the bracket being located at the top of the shell, a feed hole on the side wall of the extrusion shaft tube, a feed pipe on the side of the shell, one end of the feed pipe passing through the shell and abutting the end face of the extrusion shaft tube, a spiral blade coaxially mounted on the outer wall of the extrusion shaft tube, an extrusion cylinder sleeved on the extrusion shaft tube, a slag outlet at one end of the extrusion cylinder, the slag outlet being connected to a slag discharger, one end of the slag discharger passing through the shell and having a slag outlet at its end. The slag discharger is connected to the outside and is located between the extrusion cylinder and the support, and is rotatably connected to the extrusion shaft tube. A fish slag trough is provided below the slag discharge port. A spiral strip is fitted on the outer wall of the extrusion cylinder. A scraper is provided on the spiral strip. The end of the scraper abuts against the outer wall of the extrusion cylinder. A toothed ring is provided at one end of the spiral strip. The toothed ring meshes with a gear. The gear is connected to a second rotating shaft. The second rotating shaft passes through the housing and is connected to a first pulley. The first pulley is driven by a belt to a second pulley. The second pulley is connected to the output shaft of a reducer. The reducer is located at the top of the base. The input shaft of the reducer drives a motor. The motor is fixed on the base. A movable filter mechanism is provided at the bottom of the housing. One end of the movable filter mechanism extends out of the housing through the side wall of the housing.

[0006] Preferably, it also includes a pressing mechanism, which includes a frame, a slide rod, a helical spring, and a pressing head. The frame is located on the inner side wall of the slag discharge trough, the slide rod is located on the frame and coaxial with the slag discharge hole, the pressing head is slidably sleeved on the slide rod and located inside the slag discharge hole, and the helical spring is sleeved on the slide rod and located between the pressing head and the frame.

[0007] Preferably, the inner side of the spiral strip is provided with a T-shaped groove, the scraper is nested in the T-shaped groove, and the scraper abuts against the outer wall of the extrusion cylinder.

[0008] Preferably, it also includes a feed hopper, which has an inclined conical portion and the bottom of the feed hopper is connected to the feed pipe.

[0009] Preferably, the movable filter mechanism includes a rotating roller, knurling, and a filter screen. The plurality of rotating rollers are horizontally arranged at the bottom of the housing, the knurling is provided on the outer surface of the rotating rollers, and the filter screen is sleeved on the outside of the rotating rollers.

[0010] Preferably, it also includes an oil outlet pipe, which is located at the bottom of the conical oil tank, and an oil outlet valve is provided on the oil outlet pipe.

[0011] Preferably, the scraper is made of soft rubber.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] ① Fish feed enters the extrusion shaft tube through the feed pipe from the feed hopper and enters the extrusion chamber through the feed hole on the outer wall of the extrusion cylinder. The motor drives the spiral blades to rotate, and the spiral blades continuously extrude the fish feed, causing the fish oil to overflow from the oil outlet on the outer wall of the extrusion cylinder. The fish residue is squeezed out from the residue outlet and falls into the fish residue trough below. When the solid-liquid separation device is working, the rotating spiral blades continuously rotate, which drives the banana slices to rotate continuously, thereby scraping the oil off the wall of the extrusion cylinder, improving the oil extraction efficiency. In addition, when impurities block the oil outlet, they can also be scraped off to prevent the oil outlet from being blocked and improve the oil extraction efficiency.

[0014] ② An active filter mechanism is provided at the bottom of the shell, which can not only further filter out some impurities in the fish oil, but also transfer the impurities to the outside of the shell and fall into the fish residue tank, thus improving the solid-liquid separation effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a high-efficiency solid-liquid separation device for fish oil production according to the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of a high-efficiency solid-liquid separation device for fish oil production according to the present invention;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0020] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0021] Reference numerals: 1. Shell; 2. Base; 3. Reducer; 4. Motor; 5. Conical oil tank; 6. Oil outlet valve; 7. Oil outlet pipe; 8. Filter screen; 9. Fish residue tank; 10. Slag outlet; 11. Feed pipe; 12. Feed hopper; 13. First rotating shaft; 14. Extrusion shaft tube; 15. Support; 16. Feed hole; 17. Spiral blade; 18. Extrusion cylinder; 19. Oil outlet screen hole; 20. Spiral strip; 21. Scraper; 22. Gear ring; 23. Gear; 24. Second rotating shaft; 25. First pulley; 26. Belt; 27. Second pulley; 28. Rotating roller; 29. ​​Knurling; 30. Frame; 31. Slide rod; 32. Helical spring; 33. Pressing head; 34. Slag outlet hole. Detailed Implementation

[0022] To better understand the technical content of this utility model, a specific embodiment is provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0023] See Figures 1 to 5 This utility model provides a high-efficiency solid-liquid separation device for fish oil production, including a base 2, a shell 1 on the top of the base 2, a conical oil groove 5 at the bottom of the shell 1, a first rotating shaft 13 rotatably mounted inside the shell 1, one end of the first rotating shaft 13 passing through the shell 1 and driving the output shaft of a reducer 3, and the other end connected to an extrusion shaft tube 14, the end of the extrusion shaft tube 14 away from the first rotating shaft 13 rotatably connected to a bracket 15, the bracket 15 being located at the top inside the shell 1, a feed hole 16 on the side wall of the extrusion shaft tube 14, a feed pipe 11 on the side of the shell 1, one end of which passes through the shell 1 and its end face abuts against the end face of the extrusion shaft tube 14, a spiral blade 17 coaxially mounted on the outer wall of the extrusion shaft tube 14, an extrusion cylinder 18 sleeved on the extrusion shaft tube 14, a slag outlet 34 at one end of the extrusion cylinder 18, the slag outlet 34 being connected to a slag discharger 10, one end of the slag discharger 10 passing through the shell 1 and having a slag discharge end. The outlet is connected to the outside. The slag discharger 10 is located between the extrusion cylinder 18 and the support 15 and is rotatably connected to the extrusion shaft tube 14. A fish slag trough 9 is provided below the slag discharge outlet. A spiral strip 20 is sleeved on the outer wall of the extrusion cylinder 18. A scraper 21 is provided on the spiral strip 20. The end of the scraper 21 abuts against the outer wall of the extrusion cylinder 18. A toothed ring 22 is provided at one end of the spiral strip 20. The toothed ring 22 meshes with a gear 23. The gear 23 is connected to a second rotating shaft 24. The second rotating shaft 24 passes through the housing 1 and is connected to a first pulley 25. The first pulley 25 is driven by a second pulley 27 through a belt 26. The second pulley 27 is connected to the output shaft of a reducer 3. The reducer 3 is located on the top of the base 2. The input shaft of the reducer 3 drives a motor 4. The motor 4 is fixed on the base 2. A movable filter screen 8 mechanism is provided at the bottom of the housing 1. One end of the movable filter screen 8 mechanism extends out of the housing 1 through the side wall of the housing 1.

[0024] When the solid-liquid separation device is working, the motor 4 is started first. After being reduced in speed by the reducer 3, the motor 4 drives the extrusion shaft tube 14 to rotate through the first rotating shaft 13. At the same time, the second pulley 27 on the first rotating shaft 13 drives the first pulley 25 to rotate through the belt 26. The first pulley 25 drives the gear 23 to rotate through the second rotating shaft 24. The gear 23 and the gear ring 22 mesh with each other. The gear ring 22 drives the spiral strip 20 to rotate around the extrusion cylinder 18, so that the scraper 21 slides on the outer wall of the extrusion cylinder 18. Then, the fish feed is put into the feed pipe 11. The fish feed enters the extrusion shaft tube 14 from the feed pipe 11 and enters the inner cavity of the extrusion cylinder 18 through the feed hole 16 on the side wall of the extrusion shaft tube 14. The fish feed is squeezed by the spiral blades 17 in the extrusion cylinder 18. The fish feed is pushed to one end of the extrusion cylinder 18. As the fish feed is continuously squeezed by the spiral blades 17, the fish oil is squeezed out and overflows through the oil outlet screen 19. The overflowing fish oil is continuously scraped by the scraper, which accelerates the overflow of the fish oil. Under the action of gravity, the fish oil flows into the movable filter mechanism below the extrusion cylinder 18. After being filtered by the movable filter mechanism, it flows into the conical oil tank 5 at the bottom of the shell 1. The impurities on the movable filter mechanism move with the movable filter mechanism and fall into the fish residue tank 9 through the shell 1. After the fish feed is squeezed out of the fish oil, it becomes fish residue. The fish residue is squeezed out through the residue outlet 34 at the end of the extrusion cylinder 18 into the residue outlet 10, and then slides from the residue outlet 10 into the fish residue tank 9 below, thus completing the solid-liquid separation operation of fish oil and fish residue.

[0025] Preferably, it also includes a clamping mechanism, which includes a frame 30, a slide rod 31, a helical spring 32, and a clamping head 33. The frame 30 is disposed on the inner side wall of the slag discharger 10. The slide rod 31 is disposed on the frame 30 and coaxial with the slag discharge hole 34. The clamping head 33 is slidably sleeved on the slide rod 31 and located inside the slag discharge hole 34. The helical spring 32 is sleeved on the slide rod 31 and located between the clamping head 33 and the frame 30.

[0026] When the solid-liquid separation device is working, the fish feed is squeezed by the spiral blades 17 inside the extrusion cylinder 18. The fish feed is pushed to one end of the extrusion cylinder 18. After the fish feed is squeezed out of fish oil, it becomes fish residue. The fish residue is at the end of the extrusion cylinder 18. At this time, the fish residue is on one side of the pressing head 33. The pressing head 33 is subjected to the pre-tightening force of the spiral spring 32, which plays the role of restricting the passage of fish residue. When the pressure on one side of the pressing head 33 is greater than the spring pre-tightening force, the pressing head 33 is pushed open, and the fish residue is squeezed out from the residue outlet 34.

[0027] Preferably, the inner side of the spiral strip 20 is provided with a T-shaped groove, the scraper 21 is nested in the T-shaped groove, and the scraper 21 abuts against the outer wall of the extrusion cylinder 18.

[0028] The scraper 21 is nested in the T-shaped groove. As the spiral 20 rotates, the scraper 21 slides on the outer wall of the extrusion cylinder 18. When fish oil overflows from the oil outlet screen 19, the scraper 21 will push the fish oil to leave the oil outlet screen 19 quickly, increasing the oil output speed. After the solid-liquid separation operation is completed, the scraper 21 can clean the grease adhering to the extrusion cylinder 18, prevent the oil outlet screen 19 from being blocked, and facilitate the smooth passage of fish oil through the oil outlet screen 19, thereby improving the working efficiency of the solid-liquid separation device.

[0029] Preferably, it also includes a feed hopper 12, which has an inclined conical portion, and the bottom of the feed hopper 12 is connected to the feed pipe 11.

[0030] When the solid-liquid separation device is in operation, the fish feed is first placed in the feed hopper 12. The fish feed slides down the inclined conical part and gathers at the bottom center of the feed hopper 12. Then, it enters the extrusion shaft tube 14 through the feed pipe 11, and enters the inner cavity of the extrusion cylinder 18 through the feed hole 16 on the side wall of the extrusion shaft tube 14, completing the feeding operation. The feed hopper 12 has a large opening and a large capacity, which not only facilitates feeding but also helps to maintain the continuous operation of the solid-liquid separation device.

[0031] Preferably, the movable filter screen 8 mechanism includes a rotating roller 28, a knurled surface 29, and a filter screen 8. The plurality of rotating rollers 28 are horizontally arranged at the bottom of the housing 1, the knurled surface 29 is arranged on the outer surface of the rotating rollers 28, and the filter screen 8 is sleeved on the outside of the rotating rollers 28.

[0032] When the solid-liquid separation device is working, the spiral blades 17 continuously squeeze the fish feed, and the fish oil overflows from the oil outlet hole on the side wall of the extrusion cylinder 18 and flows into the filter screen 8 below. The filter screen 8 filters out some impurities in the fish oil. After being filtered by the filter screen 8, the fish oil continues to flow down into the conical oil tank 5. At this time, the rotating roller 28 slowly rotates, driving the filter screen 8 to move. The filter screen 8 carries the top impurities to one side of the housing 1. When the impurities move to the side rotating roller 28, the impurities fall down and enter the fish residue tank 9 below. Because the fish oil is very lubricating, the knurling 29 on the outer surface of the rotating roller 28 is a sharp protrusion, which can prevent the filter screen 8 from slipping on the rotating roller 28 and ensure the normal operation of the movable filter screen mechanism.

[0033] Preferably, it also includes an oil outlet pipe 7, which is located at the bottom of the conical oil trough 5, and an oil outlet valve 6 is provided on the oil outlet pipe 7.

[0034] The conical oil trough 5 at the bottom of the shell 1 contains the squeezed fish oil. When the oil outlet valve 6 is opened, the fish oil flows out of the shell 1 through the oil outlet pipe 7, which is beneficial for subsequent processing of the fish oil.

[0035] Preferably, the scraper 21 is made of soft rubber.

[0036] When the solid-liquid separation device is running, the toothed ring 22 drives the spiral strip 20 to rotate around the extrusion cylinder 18. The spiral strip 20 drives the scraper 21 to move together. The scraper 21 is made of soft rubber material. The scraper 21 and the outer surface of the extrusion cylinder 18 keep in contact, which is conducive to scraping out the fish oil and preventing the extrusion cylinder 18 from wearing out.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 high-efficiency solid-liquid separation device for fish oil production, characterized in that, The system includes a base, a housing at the top of the base, a conical oil groove at the bottom of the housing, a first rotating shaft rotatably mounted inside the housing, one end of the first rotating shaft passing through the housing and connected to the output shaft of a reducer, and the other end connected to an extrusion shaft tube. A bracket is rotatably connected to the end of the extrusion shaft tube away from the first rotating shaft, the bracket being located at the top of the housing. A feed hole is provided on the side wall of the extrusion shaft tube, and a feed pipe is provided on the side of the housing, one end of which passes through the housing and abuts against the end face of the extrusion shaft tube. Spiral blades are coaxially mounted on the outer wall of the extrusion shaft tube. An extrusion cylinder is fitted onto the extrusion shaft tube, one end of the extrusion cylinder having a slag outlet, which is connected to a slag discharge device. One end of the slag discharge device extends out of the housing and has a slag outlet communicating with the outside. The slag discharger is located between the extrusion cylinder and the support and is rotatably connected to the extrusion shaft tube. A fish slag trough is provided below the slag discharge port. A spiral strip is fitted on the outer wall of the extrusion cylinder. A scraper is provided on the spiral strip. The end of the scraper abuts against the outer wall of the extrusion cylinder. A toothed ring is provided at one end of the spiral strip. The toothed ring meshes with a gear. The gear is connected to a second rotating shaft. The second rotating shaft passes through the housing and is connected to a first pulley. The first pulley is driven by a belt to a second pulley. The second pulley is connected to the output shaft of a reducer. The reducer is located at the top of the base. The input shaft of the reducer drives a motor. The motor is fixed on the base. A movable filter mechanism is provided at the bottom of the housing. One end of the movable filter mechanism extends out of the housing through the side wall of the housing.

2. The high-efficiency solid-liquid separation device for fish oil production according to claim 1, characterized in that, It also includes a pressing mechanism, which includes a frame, a slide rod, a helical spring and a pressing head. The frame is located on the inner wall of the slag discharger. The slide rod is located on the frame and coaxial with the slag discharge hole. The pressing head is slidably sleeved on the slide rod and located inside the slag discharge hole. The helical spring is sleeved on the slide rod and located between the pressing head and the frame.

3. The high-efficiency solid-liquid separation device for fish oil production according to claim 1, characterized in that, The inner side of the spiral strip is provided with a T-shaped groove, and the scraper is nested in the T-shaped groove. The scraper abuts against the outer wall of the extrusion cylinder.

4. The high-efficiency solid-liquid separation device for fish oil production according to claim 1, characterized in that, It also includes a feed hopper, which has an inclined conical section and the bottom of the feed hopper is connected to the feed pipe.

5. The high-efficiency solid-liquid separation device for fish oil production according to claim 1, characterized in that, The movable filter mechanism includes rotating rollers, knurling, and a filter screen. Multiple rotating rollers are horizontally arranged at the bottom of the housing, the knurling is provided on the outer surface of the rotating rollers, and the filter screen is sleeved on the outside of the rotating rollers.

6. The high-efficiency solid-liquid separation device for fish oil production according to claim 1, characterized in that, It also includes an oil outlet pipe, which is located at the bottom of the conical oil tank and is equipped with an oil outlet valve.

7. The high-efficiency solid-liquid separation device for fish oil production according to claim 1, characterized in that, The scraper is made of soft rubber.

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