Slag filtering device for fish oil processing and use method of slag filtering device

Abstract

The invention discloses a residue filtering device for fish oil processing and a using method thereof, and relates to the technical field of filtering processing, the residue filtering device for fish oil processing and the using method thereof comprise a shell, a cleaning mechanism and a secondary filtering mechanism; the cleaning mechanism is arranged on the inner side of the shell, the secondary filtering mechanism is arranged at the bottom of the cleaning mechanism, the cleaning mechanism comprises a filtering basket, an air suction port, a connecting pipe, an air exchange fan and an air spraying port, the connecting pipe is used for transferring suction force to the air exchange fan, the suction force drives the air exchange fan to rotate, and the air spraying port is used for spraying air to the air exchange fan. When the air exchange fan rotates, air in the opposite direction is generated and sprayed out from the air spraying opening, due to the fact that the air suction opening and the surface of the inner wall of the filtering basket are in close fit, suction force does not leak out, the suction force effect is maximized, part of the suction force enables the air exchange fan of the air blowing bin to rotate through the connecting pipe, and airflow generated by rotation of the air exchange fan is sprayed out from the air spraying opening to blow slag materials. The suction pressure of the air suction port is reduced, and the cleanliness is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of filtration processing, and specifically to a residue filtration device for fish oil processing and its usage method. Background Art

[0002] Fish oil is a kind of oil extracted from fatty fish, rich in ω-3 fatty acids such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). It has many benefits to human health, such as contributing to cardiovascular health, supporting brain and eye development, etc., and is often made into nutritional supplements for people to take daily.

[0003] Behind the large amount of fish oil consumed by people, a device for processing and producing fish oil is needed. Among them, in order to ensure the purity of fish oil, a residue filtration device for fish oil processing is needed.

[0004] However, there are the following deficiencies in an existing residue filtration device for fish oil processing:

[0005] 1) When the existing residue filtration device for fish oil processing repeatedly filters the residue for multiple times, the filter screen for filtration is easily clogged, affecting the filtration efficiency. When manually cleaning, it is time-consuming and laborious, further affecting the filtration efficiency.

[0006] Therefore, we propose a residue filtration device for fish oil processing and its usage method to facilitate solving the problems raised above. Summary of the Invention

[0007] The object of the present invention is to provide a residue filtering device for fish oil processing and its usage method. Start the electric telescopic rod to drive the mounting frame to move downward, so that the cleaning mechanism on the mounting frame synchronously descends into the inside of the filter basket. Then, start the first motor to drive the first gear to rotate. While the first gear rotates, it drives the outer gear ring meshing with it to rotate. At this time, the filter basket rotates inside the outer shell through the rotating groove fixed on it. Since the first scraper is in close contact with the filter basket, the first scraper scrapes the residual fish oil on the inner wall of the filter basket. The scraped fish oil is pushed by the first scraper and concentrated in the rotating groove. At the same time, the rotating filter basket drives the inner gear ring to rotate. The second gear rotates in the rotating groove, and the inner gear ring drives the second gear meshing with it to rotate. Thus, the auger at the bottom of the second gear rotates. The baffle plate limits the fish oil and increases its pressure. When the fish oil on the surface of the filter basket is cleaned up, start the suction machine. Its suction force passes through the booster valve and sucks the slag blocked in the filter holes on the filter basket through the suction port that is in close contact with the inner wall of the filter basket. Part of the suction force passes through the connecting pipe to the blowing chamber. The blowing chamber is provided with a decompression hole on the other side of the rotating fan inside. When the suction force sucks the air flow inside the blowing chamber, the air flow entering from the decompression hole blows the rotating fan to rotate. While the rotating fan rotates, it fans the air flow back to the transfer pipe and leads the air flow to be ejected from the jet port through the transfer pipe. At this time, the blowing effect of the air flow on the blocked slag in the filter basket is also increased.

[0008] To achieve the above object, the present invention provides the following technical solution: A residue filtering device for fish oil processing and its usage method, including an outer shell, a cleaning mechanism and a secondary filtering mechanism; the cleaning mechanism is arranged inside the outer shell, the secondary filtering mechanism is arranged at the bottom of the cleaning mechanism, the cleaning mechanism includes a filter basket, a suction port, a connecting pipe, a rotating fan and a jet port. The connecting pipe is used to transfer the suction force to the rotating fan, and the suction force drives the rotating fan to rotate. When the rotating fan rotates, it generates winds in opposite directions and ejects them from the jet port. Since the outer edges of the suction port and the jet port are respectively in close contact with the inner and outer surfaces of the filter basket, the air entering and leaving the suction port and the jet port increases the pressure on the filter holes of the filter basket. The air ejected from the jet port is used to cooperate with the suction port to work.

[0009] Preferably, the cleaning mechanism further includes a filter basket. The filter basket is rotatably connected inside the outer shell. An outer gear ring is arranged on the outer side of the filter basket, and an inner gear ring is arranged on the top of the filter basket. The outer side of the outer shell is fixedly connected with a support frame. The top of the support frame is provided with an electric telescopic rod. The top of the electric telescopic rod is fixedly connected with a mounting frame. The top of the mounting frame is provided with a first motor. The bottom of the first motor is fixedly connected with a first gear. The first gear meshes with the outer gear ring.

[0010] Preferably, a central shaft rod is rotatably connected to the bottom of the mounting frame. A first scraping plate is fixedly connected to the outer side of the central shaft rod. An oil scraping groove is formed inside the first scraping plate. One side end of the first scraping plate in contact with the filter basket is closely fitted with the inner wall of the filter basket. The oil scraping groove is a cylindrical groove.

[0011] Preferably, a screw conveyor is rotatably connected to the inside of the oil scraping groove. A second gear is rotatably connected to the top of the screw conveyor. The second gear meshes with the internal gear ring. A flow blocking plate is arranged at the inner top of the filter basket. The flow blocking plate is fixedly connected to the first scraping plate. The overall cross-sectional area of the screw conveyor is slightly smaller than the inner cross-sectional area of the rotating groove.

[0012] Preferably, a pressure boosting air valve is installed on the other side of the central shaft rod. The other end of the top of the mounting frame is fixedly connected with an air suction device. The air suction device is communicated with the top of the pressure boosting air valve. The other side of the pressure boosting air valve is communicated with the air suction port. The air suction port is closely fitted with the inner wall of the filter basket. The top of the air suction port is communicated with a connecting pipe.

[0013] Preferably, the top of the connecting pipe is communicated with a blowing chamber. The top of the blowing chamber is communicated with a rotating connecting pipe. The inner side of the blowing chamber is rotatably connected with an air changing fan. The bottom of the rotating connecting pipe is communicated with the air jet port. A plurality of pressure reducing holes are formed on the outer side of the blowing chamber. The outer side of the pressure reducing hole is communicated with a gas gathering hood. The gas gathering hood is in a horn shape.

[0014] Preferably, the secondary filtering mechanism further includes an oil storage tank. The oil storage tank is installed at the bottom of the filter basket. A connecting shaft is rotatably connected to the inside of the oil storage tank.

[0015] Preferably, a filtering fishing net is slidably connected to the inside of the connecting shaft. A T-shaped sliding groove is formed inside the connecting shaft. A T-shaped sliding strip slides inside the T-shaped sliding groove. The filtering fishing net and the connecting shaft slide through the T-shaped sliding groove and the T-shaped sliding strip.

[0016] Preferably, a second scraping plate is fixedly connected to the outer top of the filtering fishing net. A slag scoop is fixedly connected to the bottom of the filtering fishing net. The outer top surface of the second scraping plate is closely fitted with the outer bottom surface of the filter basket. A second motor is installed at the bottom of the connecting shaft.

[0017] A using method of a residue filtering device for fish oil processing includes the following steps:

[0018] Step 1: When the air changing fan is used to inhale air through the air suction port, the airflow entering through the gas gathering hood drives the air changing fan to rotate, so that the air changing fan generates airflows in different directions and rushes to the air blowing port;

[0019] Step 2: The second scraping plate is used to remove the slag on the filter basket in advance and simultaneously scrape off the fish oil remaining on the bottom surface of the filter basket;

[0020] Step 3: While the slag bucket is rotating, it secondarily filters the fish oil filtered out in the oil storage tank and removes the impurities in the fish oil.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. When the slag material is filtered multiple times and the filter basket is blocked and the efficiency is reduced, first clean the slag material in the filter basket, and then start the electric telescopic rod to lower the mounting frame. The first scraper of the cleaning mechanism fits with the inner bottom of the filter basket. Turn on the first motor, the first gear drives the outer gear ring to rotate the filter basket, and the scraper scrapes the fish oil on the inner wall and concentrates it in the rotating groove. The rotating filter basket drives the inner gear ring to rotate the auger. While rotating, the auger pushes the fish oil to the bottom of the basket and penetrates out of the bottom of the filter basket. The flow blocking plate limits the pressure and accelerates the penetration. After the fish oil is cleaned, start the air suction machine, and the suction passes through the pressure boosting air valve to the suction port, thereby sucking out the slag material in the filter holes. Since the suction port is tightly combined with the inner wall surface of the filter basket and the suction does not leak, the suction effect is maximized. Part of the suction causes the replacement fan in the blowing chamber to rotate through the connecting pipe, and the airflow generated by the rotation of the replacement fan is ejected from the jet port, producing a blowing effect on the slag material, reducing the suction pressure at the suction port and improving the cleaning cleanliness.

[0023] 2. In order to further improve the purity of fish oil, after the first scraper finishes scraping the oil, start the second motor to drive the connecting shaft, so that the filter fishing net rotates in the oil storage tank, secondarily filters the fish oil and removes the residual slag material. The second scraper on the top of the filter fishing net scrapes the remaining oil at the bottom of the filter basket and the slag material about to fall. When the slag material is scraped off, it is taken away by the continuously rotating fishing net, preventing the slag material from affecting the finished product during subsequent falling. Its slag bucket increases the slag storage capacity of the fishing net, extends the working time, and prevents the slag material from overflowing. Description of the Drawings

[0024] Figure 1 is the main view three-dimensional structure diagram of a slag material filtering device for fish oil processing according to the present invention;

[0025] Figure 2 is the three-dimensional structure diagram of the structure splitting of a slag material filtering device for fish oil processing according to the present invention;

[0026] Figure 3 is the three-dimensional structure diagram of the cleaning mechanism of a slag material filtering device for fish oil processing according to the present invention;

[0027] Figure 4 is Figure 3 the enlarged view of A in

[0028] Figure 5 is Figure 3 the enlarged view of B in

[0029] Figure 6This is a three-dimensional structure diagram of the secondary filtering mechanism in a residue filtering device for fish oil processing according to the present invention;

[0030] Figure 7 This is a top view of a residue filtering device for fish oil processing according to the present invention.

[0031] In the figure: 1, outer shell; 2, cleaning mechanism; 201, filtering basket; 202, rotating groove; 203, outer gear ring; 204, inner gear ring; 205, support frame; 206, electric telescopic rod; 207, first motor; 208, first gear; 209, central shaft rod; 210, first scraper; 211, flow blocking plate; 212, oil scraping groove; 213, auger; 214, second gear; 215, booster air valve; 216, air suction port; 217, connecting pipe; 218, blowing chamber; 219, adapter pipe; 220, replacement fan; 221, jet port; 222, mounting rack; 223, air suction device; 3, secondary filtering mechanism; 301, oil storage tank; 302, connecting shaft; 303, filtering fishing net; 304, second scraper; 305, residue bucket; 306, second motor. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1, as Figures 1 - 3As shown in the figure, a residue filtering device for fish oil processing and its usage method include a housing 1, a cleaning mechanism 2, and a secondary filtering mechanism 3. The cleaning mechanism 2 is arranged inside the housing 1, and the secondary filtering mechanism 3 is arranged at the bottom of the cleaning mechanism 2. The cleaning mechanism 2 includes a filter basket 201, an air inlet 216, a connecting pipe 217, an air exchange fan 220, and an air jet port 221. The connecting pipe 217 is used to transfer suction force to the air exchange fan 220, and the suction force drives the air exchange fan 220 to rotate. When the air exchange fan 220 rotates, air in opposite directions is ejected from the air jet port 221. Since the outer edges of the air inlet 216 and the air jet port 221 are respectively in close contact with the inner and outer surfaces of the filter basket 201, the pressure of the air entering and exiting through the air inlet 216 and the air jet port 221 on the filter holes of the filter basket 201 increases. The air ejected from the air jet port 221 is used to cooperate with the air inlet 216. The cleaning mechanism 2 further includes a filter basket 201. The filter basket 201 is rotatably connected inside the housing 1. An external gear ring 203 is arranged on the outer side of the filter basket 201, and an internal gear ring 204 is arranged on the top of the filter basket 201. A support frame 205 is fixedly connected to the outer side of the housing 1. An electric telescopic rod 206 is arranged on the top of the support frame 205. The top of the electric telescopic rod 206 is fixedly connected to a mounting frame 222. A first motor 207 is arranged on the top of the mounting frame 222. The bottom of the first motor 207 is fixedly connected to a first gear 208. The first gear 208 meshes with the external gear ring 203. A central shaft rod 209 is rotatably connected to the bottom of the mounting frame 222. A first scraper 210 is fixedly connected to the outer side of the central shaft rod 209. An oil scraping groove 212 is formed on the inner side of the first scraper 210. The side end of the first scraper 210 in contact with the filter basket 201 is in close contact with the inner wall of the filter basket 201. The oil scraping groove 212 is a cylindrical groove. A screw conveyor 213 is rotatably connected to the inner side of the oil scraping groove 212. The top of the screw conveyor 213 is rotatably connected to a second gear 214. The second gear 214 meshes with the internal gear ring 204. A flow blocking plate 211 is arranged at the top inside the filter basket 201. The flow blocking plate 211 is fixedly connected to the first scraper 210. The overall cross-sectional area of the screw conveyor 213 is slightly smaller than the inner cross-sectional area of the rotating groove 202.

[0034] The effects achieved by the entire Embodiment 1 are as follows: After multiple slag filtrations, the interior of the filter basket 201 becomes blocked, affecting the filtration efficiency. After cleaning the slag in the filter basket 201, the slag blocking the filter holes on the filter basket 201 starts to be removed. At this time, the electric telescopic rod 206 is activated to drive the mounting frame 222 to move downward, and the cleaning mechanism 2 on the mounting frame 222 then enters the filter basket 201 until the bottom of the first scraper 210 fits against the inner bottom of the filter basket 201. Subsequently, the first motor 207 is turned on to drive the first gear 208 to rotate. The first gear 208 drives the outer gear ring 203 meshing with it to rotate, causing the filter basket 201 to rotate inside the housing 1 through the rotation groove 202. At this time, the fixed first scraper 210 rubs against the rotating filter basket 201. Since the first scraper 210 is in close contact with the inner wall of the filter basket 201, the first scraper 210 scrapes off the fish oil remaining on the inner wall of the filter basket 201 and, when the filter basket 201 continues to rotate, pushes the scraped fish oil into the rotation groove 202. The rotating filter basket 201 also drives the inner gear ring 204 to rotate, and the inner gear ring 204 drives the second gear 214 meshing with it to rotate in the rotation groove 202. The auger 213 at the bottom of the second gear 214 then rotates, pushing the fish oil in the rotation groove 202 downward to the bottom of the filter basket 201. Under the continuous rotation of the filter basket 201, the fish oil is pushed by the first scraper 210 and slowly penetrates out of the filter basket 201. During this process, the baffle 211 limits and pressurizes the fish oil, increasing the penetration speed of the fish oil.

[0035] Embodiment 2 is as Figures 2 - 4 shown. On the other side of the central shaft rod 209, a pressurizing air valve 215 is installed. At the other end of the top of the mounting frame 222, an air suction device 223 is fixedly connected. The air suction device 223 communicates with the top of the pressurizing air valve 215. The other side of the pressurizing air valve 215 communicates with the air suction port 216. The air suction port 216 is in close contact with the inner wall of the filter basket 201. The top of the air suction port 216 communicates with a connecting pipe 217. The top of the connecting pipe 217 communicates with a blowing chamber 218. The top of the blowing chamber 218 communicates with a transfer pipe 219. The inner side of the blowing chamber 218 is rotatably connected to an air exchange fan 220. The bottom of the transfer pipe 219 communicates with a jet port 221. A plurality of pressure relief holes are opened on the outer side of the blowing chamber 218, and the outer side of the pressure relief holes communicates with a gas converging hood, and the gas converging hood is in a horn shape.

[0036] The effects achieved by the entire Embodiment 2 are as follows: After the fish oil on the surface of the filter basket 201 is cleaned, the air suction machine is started. Its suction force passes through the booster valve 215 and through the air suction port 216 that is in close contact with the inner wall of the filter basket 201 to suck the blocked slag in the filter holes. Since the air suction port 216 is in close contact with the inner wall of the filter basket 201, the suction air flow does not leak. When passing through the filter holes, the suction effect reaches the maximum, enhancing the slag suction effect. Part of the suction force enters the blowing chamber 218 through the connecting pipe 217. On the other side of the air exchange fan 220 inside the blowing chamber 218, there are pressure reduction holes. When the air flow in the suction chamber is sucked, the air flow entering through the pressure reduction holes drives the air exchange fan 220 to rotate. The rotation of the air exchange fan 220 makes the air flow turn back to the transfer pipe 219 and then spray out from the air jet port 221 that is in close contact with the filter basket 201. The air flow enhances the blowing effect on the blocked slag in the filter basket 201, reduces the suction pressure of the air suction port 216, and improves the cleaning degree of the filter basket 201.

[0037] Embodiment 3, as Figures 5 - 7 shown, the secondary filtering mechanism 3 further includes an oil storage tank 301. The oil storage tank 301 is installed at the bottom of the filter basket 201. A connecting shaft 302 is rotatably connected to the inside of the oil storage tank 301. A filter fishing net 303 is slidably connected to the inside of the connecting shaft 302. A T-shaped sliding groove is formed inside the connecting shaft 302. A T-shaped sliding bar slides inside the T-shaped sliding groove. The filter fishing net 303 and the connecting shaft 302 slide through the T-shaped sliding groove and the T-shaped sliding bar. A second scraper 304 is fixedly connected to the outer top surface of the filter fishing net 303. A slag bucket 305 is fixedly connected to the bottom of the filter fishing net 303. The outer top surface of the second scraper 304 is in close contact with the outer bottom surface of the filter basket 201. A second motor 306 is installed at the bottom of the connecting shaft 302.

[0038] The effects achieved by the entire Embodiment 3 are as follows: To improve the purity of fish oil, after the first scraper 210 finishes scraping the oil on the filter basket 201, the second motor 306 is started to drive the connecting shaft 302, driving the filter fishing net 303 to rotate in the oil storage tank 301. The filter fishing net 303 not only performs secondary filtration on the fish oil in the tank, intercepting residual slag, but also its top second scraper 304 can scrape the remaining oil at the bottom of the filter basket 201, reducing waste. At the same time, it can scrape off the slag that is about to fall at the bottom of the basket in advance and be fished out by the continuously rotating filter fishing net 303, avoiding the pollution of fish oil by the falling slag after the secondary filtration, reducing production costs and time loss. In addition, the slag bucket 305 can increase the slag storage capacity of the filter fishing net 303, extend the continuous working time, and prevent the accumulation and overflow of slag.

[0039] The working principle of the whole device is as follows: When the internal blockage of the filter basket 201 affects the filtration efficiency due to the slag filtration being carried out multiple times, after cleaning the slag in the filter basket 201, the electric telescopic rod 206 is started to drive the mounting frame 222 to move downward, so that the cleaning mechanism 2 on the mounting frame 222 synchronously descends into the filter basket 201 until the bottom of the first scraper 210 fits against the inner bottom of the filter basket 201. Then, the first motor 207 is started to drive the first gear 208 to rotate. While the first gear 208 rotates, it drives the outer gear ring 203 meshing with it to rotate. At this time, the filter basket 201 rotates inside the outer shell 1 through the rotation groove 202 fixed on it. At the same time, mutual friction is generated between the stationary first scraper 210 and the rotating filter basket 201. Because the first scraper 210 is in close contact with the filter basket 201, the first scraper 210 scrapes off the fish oil remaining on the inner wall of the filter basket 201. The scraped fish oil is pushed by the first scraper 210 and concentrated in the rotation groove 202. At the same time, the rotating filter basket 201 drives the inner gear ring 204 to rotate. The second gear 214 rotates in the rotation groove 202, and the inner gear ring 204 drives the second gear 214 meshing with it to rotate. Then, the auger 213 at the bottom of the second gear 214 rotates and drives the accumulated fish oil in the rotation groove 202 to be pushed downward to the bottom surface of the filter basket 201 and flows on the surface of the continuously rotating filter basket 201 under the push of the first scraper 210, and slowly penetrates out of the filter basket 201 at the same time. The baffle 211 limits the fish oil and pressurizes it to accelerate the penetration work. This method avoids the situation that a large amount of fish oil is easily sucked when sucking the slag later, which makes the device difficult to clean, and is relatively wasteful in fish oil production. When the fish oil on the surface of the filter basket 201 is cleaned, the suction machine is started. Its suction passes through the pressure-boosting air valve 215 and sucks the slag blocked in the filter holes on the filter basket 201 through the suction port 216 that is in close contact with the inner wall of the filter basket 201. Because the suction port 216 is in close contact with the inner wall of the filter basket 201, the suction air flow does not leak out. When the suction air flow passes through the filter holes on the filter basket 201 at the suction port 216, its suction effect is maximized, increasing the suction effect on the slag in the filter holes. At the same time, part of the suction passes through the connecting pipe 217 into the blowing chamber 218. The blowing chamber 218 is provided with a decompression hole on the other side of the rotating fan 220 inside. When the suction sucks the internal air flow of the blowing chamber 218, due to the position of the decompression hole, the air flow entering from the decompression hole blows the rotating fan 220 to rotate. While the rotating fan 220 rotates, it fans the air flow back into the transfer pipe 219 and leads the air flow to be ejected from the jet port 221 through the transfer pipe 219. Because the jet port 221 is also in close contact with the filter basket 201, the blowing effect of the air flow on the blocked slag in the filter basket 201 is also increased at this time. Under the effect of the jet from the jet port 221, the suction pressure of the suction port 216 is reduced, and the cleanliness of the cleaning of the filter basket 201 is increased;

[0040] To further increase the filtration of the residue material and make the fish oil purer, after the first squeegee 210 finishes scraping the oil from the filtration basket 201, the second motor 306 is started to drive the connecting shaft 302 to rotate. At this time, the filtration net 303 rotates synchronously in the oil storage tank 301 to perform secondary filtration on the fish oil in the oil storage tank 301, fishing out the remaining residue material therein. The second squeegee 304 at the top of the filtration net 303 synchronously scrapes off the remaining fish oil at the bottom of the filtration basket 201 to reduce waste. At the same time, the residue material that is about to fall from the bottom of the filtration basket 201 is also scraped off in advance and fished out by the continuously rotating filtration net 303 to prevent the residue material from accidentally falling after the secondary filtration, which may affect the purity of the finished fish oil, increase the production cost and time. The residue hopper 305 is used to increase the capacity of the filtration net 303 and its sustainable working time, and also prevent the situation where the residue material accumulates and is likely to flow out easily.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A residue filtering device for fish oil processing, comprising a housing (1), a cleaning mechanism (2) and a secondary filtering mechanism (3); characterized in that: The cleaning mechanism (2) is arranged inside the housing (1), and the secondary filtering mechanism (3) is arranged at the bottom of the cleaning mechanism (2). The cleaning mechanism (2) includes a filter basket (201), a suction port (216), a connecting pipe (217), an air exchange fan (220), and a jet port (221). The connecting pipe (217) is used to transfer suction force to the air exchange fan (220), and the suction force drives the air exchange fan (220) to rotate. When the air exchange fan (220) rotates, air in the opposite direction is ejected from the jet port (221). Since the outer edges of the suction port (216) and the jet port (221) are respectively in close contact with the inner and outer surfaces of the filter basket (201), the pressure of the air entering and leaving the suction port (216) and the jet port (221) on the filter holes of the filter basket (201) increases, and the air ejected from the jet port (221) is used to cooperate with the suction port (216) for operation.

2. The residue filtering device for fish oil processing according to claim 1, characterized in that: The cleaning mechanism (2) further includes an external gear ring (203). The external gear ring (203) is arranged on the outer side of the filter basket (201). An internal gear ring (204) is arranged on the top of the filter basket (201). A support frame (205) is fixedly connected to the outer side of the housing (1). An electric telescopic rod (206) is arranged on the top of the support frame (205). The top of the electric telescopic rod (206) is fixedly connected to a mounting frame (222). A first motor (207) is arranged on the top of the mounting frame (222). The bottom of the first motor (207) is fixedly connected to a first gear (208), and the first gear (208) meshes with the external gear ring (203).

3. The residue filtering device for fish oil processing according to claim 2, characterized in that: The bottom of the mounting frame (222) is rotatably connected to a central shaft rod (209). A first scraping plate (210) is fixedly connected to the outer side of the central shaft rod (209). An oil scraping groove (212) is formed inside the first scraping plate (210). The side end of the first scraping plate (210) in contact with the filter basket (201) is in close contact with the inner wall of the filter basket (201). The oil scraping groove (212) is a cylindrical groove.

4. The residue filtering device for fish oil processing according to claim 3, wherein: A screw conveyor (213) is rotatably connected to the inside of the oil scraping groove (212). A second gear (214) is rotatably connected to the top of the screw conveyor (213), and the second gear (214) meshes with the internal gear ring (204). A baffle plate (211) is arranged at the inner top of the filter basket (201), and the baffle plate (211) is fixedly connected to the first scraping plate (210). The overall cross-sectional area of the screw conveyor (213) is slightly smaller than the inner cross-sectional area of the rotating groove (202).

5. The residue filtering device for fish oil processing according to claim 4, wherein: A pressure increasing air valve (215) is arranged on the other side of the central shaft rod (209). The other end of the top of the mounting frame (222) is fixedly connected to a suction device (223). The suction device (223) is communicated with the top of the pressure increasing air valve (215). The other side of the pressure increasing air valve (215) is communicated with the suction port (216). The suction port (216) is in close contact with the inner wall of the filter basket (201), and the top of the suction port (216) is communicated with the connecting pipe (217).

6. The residue filtering device for fish oil processing according to claim 5, wherein: The top of the connecting pipe (217) is communicated with a blowing chamber (218). The top of the blowing chamber (218) is communicated with a rotating connecting pipe (219). The inner side of the blowing chamber (218) is rotatably connected with an air exchange fan (220). The bottom of the rotating connecting pipe (219) is communicated with an air jet port (221). A plurality of pressure relief holes are formed in the outer side of the blowing chamber (218). The outer sides of the pressure relief holes are communicated with a gas collimating hood, and the gas collimating hood is in a horn shape.

7. An oil residue filtering device for fish oil processing according to claim 6, characterized in that: The secondary filtering mechanism (3) includes an oil storage tank (301). The oil storage tank (301) is arranged at the bottom of the filtering basket (201), and a connecting shaft (302) is rotatably connected inside the oil storage tank (301).

8. The residue filtering device for fish oil processing according to claim 7, characterized in that: A filtering fishing net (303) is slidably connected to the inner side of the connecting shaft (302). A T-shaped sliding groove is formed in the inner side of the connecting shaft (302). A T-shaped sliding bar slides inside the T-shaped sliding groove. The filtering fishing net (303) and the connecting shaft (302) slide through the T-shaped sliding groove and the T-shaped sliding bar.

9. A residue filtering device for fish oil processing according to claim 8, characterized in that: A second scraper (304) is fixedly connected to the outer top of the filtering fishing net (303). A slag hopper (305) is fixedly connected to the bottom of the filtering fishing net (303). The outer top surface of the second scraper (304) is in close contact with the outer bottom surface of the filtering basket (201). A second motor (306) is arranged at the bottom of the connecting shaft (302).

10. A method for using a residue filtering device for fish oil processing, characterized in that: A fish oil processing waste filtering device according to claim 9, comprising the following steps: S1: When the air exchange fan (220) is sucked by the air suction port (216), the airflow entering through the gas collimating hood drives the air exchange fan (220) to rotate, so that the air exchange fan (220) generates airflows in different directions and surges to the air blowing port. S2: The second scraper (304) is used to remove the waste on the filtering basket (201) in advance and simultaneously scrape off the fish oil remaining on the bottom surface of the filtering basket (201). S3: While rotating, the slag hopper (305) secondarily filters the fish oil filtered out in the oil storage tank (301) and fishes out the impurities in the fish oil.

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