Animal fat multi-stage refining system

Abstract

A multistage animal fat refining system comprises a degumming tank, a deacidification tank, a decoloration tank, a deodorization tower and a filter, the filter comprises a tank body, an upper cover and a filter element module, the upper cover is movably connected to the upper portion of the tank body, the filter element module comprises a pipe seat, a header pipe, a scraping disc and a plurality of filter pipes, the filter pipes are vertically arranged in the tank body, and the header pipe is movably connected to the upper portion of the tank body. A plurality of filter holes are formed in the filter pipes, the pipe seat is arranged at the lower end inside the tank body, the header pipe is arranged at the lower end outside the tank body, the lower end of the pipe seat extends out of the tank body and is connected with the header pipe, a plurality of connecting branch pipes are arranged at the upper end of the pipe seat, and the upper ends of the connecting branch pipes are in threaded connection with the lower ends of the corresponding filter pipes. The scraping disc is connected in the tank body in an up-and-down sliding mode, a scraping ring is arranged at the position, where the filter pipe penetrates through, of the scraping disc, viscous impurities attached to the surface of the filter pipe can be scraped by lifting the scraping disc, cleaning is convenient, and the efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of animal fat processing technology, specifically to a multi-stage refining system for animal fats. Background Technology

[0002] The multi-stage refining system for animal fats is a complex combination of equipment comprising multiple process stages. Its core refining equipment consists of, in sequence, a degumming tank, a deacidifying tank, a decolorizing tank, a deodorizing tower, and a filter. These devices are connected sequentially by pipelines. The degumming tank removes phospholipids and colloidal impurities from animal fats; the deacidifying tank neutralizes free fatty acids and is equipped with a high-speed centrifuge to separate soap residue; the decolorizing tank adds mixed activated clay or activated carbon to adsorb pigments; the deodorizing tower deodorizes the fats with steam under high-temperature vacuum conditions; and the filter removes minute impurities from the fats.

[0003] The filters used in animal fat refining are typically leaf filters. A leaf filter consists of a tank and leaf-shaped filter blades. The filter blades are housed within the tank, and their internal space allows animal fat to enter through the pores in the filter blades under pressure differential. The fat then collects in a main pipe and is discharged. Impurities larger than the pore diameter are rejected and adhere to the outer surface of the filter blades, thus completing the filtration process. Although current leaf filters on the market have the function of blowing cake drying followed by vibration or spray slag removal, allowing for periodic cleaning, the applicant found in production that impurities in the fat are highly adhesive. Vibration or spray slag removal cannot completely clean them, requiring periodic removal of the filter blades from the tank for manual scraping. Removing the leaf-shaped filter blades from the tank requires opening the bottom cover of the tank, disconnecting the filter blades from the bottom of the tank, and then opening the top cover to pull the filter blades out from the top opening. This cumbersome and complex removal and installation process severely impacts production flow and efficiency. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a multi-stage refining system for animal fats.

[0005] The technical solution of this utility model is as follows:

[0006] A multi-stage refining system for animal fats includes a degumming tank, a deacidification tank, a decolorization tank, a deodorization tower, and a filter. The degumming tank, deacidification tank, decolorization tank, deodorization tower, and filter are connected sequentially by pipes. The filter includes a tank body, a top cover, and a filter element module. The tank body has an inlet connector connected to the deodorization tower via a pipe. Animal fats deodorized by the deodorization tower can enter the tank body through the inlet connector. The top cover is movably connected to the top of the tank body for sealing. The filter element module includes a tube seat, a main pipe, a scraper disc, and a plurality of filter tubes. All filter tubes are vertically arranged within the tank body and have a plurality of filter holes. The tube seat is located inside the lower end of the tank body, and the main pipe is located outside the lower end of the tank body. The lower end of the tube seat extends out of the tank body and connects to the main pipe. The upper end is provided with a plurality of connecting branch pipes, the number of which is the same as the number of filter tubes. The upper end of each connecting branch pipe is connected to the lower end of the corresponding filter tube by a thread. The scraping disc is slidably connected to the tank. The scraping disc is provided with a scraping ring at the position where the filter tube passes through. The inner diameter of the scraping ring matches the outer diameter of the filter tube. When it is necessary to clean the filter module in the tank, the top cover can be opened, and the scraping disc can be lifted from the bottom upwards using a hook or other tools. During the lifting process, the scraping ring can scrape off the viscous impurities attached to the surface of the filter tube. Afterwards, the scraping disc can be removed from the tank, the viscous impurities can be poured out, and then it can be put back in its original position and the top cover can be closed to complete the cleaning. This method ensures the cleaning effect while being convenient, quick, time-saving, and labor-saving, and can greatly shorten the time required to scrape off impurities.

[0007] To ensure the structural strength of the filter tube, the cross-sectional shape of the filter tube includes a circle with a diameter of 5-10cm and a wall thickness of not less than 5mm.

[0008] Furthermore, to facilitate the operation of the filter tube, a disassembly handle is coaxially fixedly connected to the upper end of the filter tube, and the shape of the disassembly handle includes an inverted U-shape.

[0009] Furthermore, in order to ensure the filtration effect of the filter tube, the diameter of the filter pore is 50-100μm.

[0010] In order to enable the scraping disc to catch the impurities scraped off by the scraping ring and prevent the scraped impurities from falling back into the tank, a blocking strip is fixedly connected to the outer edge of the scraping disc, and the height of the blocking strip is 5-10cm.

[0011] Furthermore, in order to ensure that the scraping ring can slide up and down with the scraping disc and can smoothly scrape off the impurities attached to the outer surface of the filter tube, the inner diameter of the scraping ring is 0.1-0.3 mm larger than the outer diameter of the filter tube.

[0012] Furthermore, in order to reduce the resistance when the scraping ring scrapes away impurities, the outer surface of the upper end of the scraping ring is an inclined surface that is narrower at the top and wider at the bottom, and the inner surface of the upper end of the scraping ring and the outer surface form an angle α, the angle of which is 15-30 degrees.

[0013] To prevent the scraping disc from tilting and getting stuck in the tank when it slides up and down, the height of the scraping ring is not less than the inner diameter of the scraping ring, so that the scraping ring can play a guiding role.

[0014] To facilitate operators in using a hook to lift the scraping disc, a lifting handle is provided in the middle of the upper surface of the scraping disc. Preferably, the shape of the lifting handle includes an inverted U-shape.

[0015] Preferably, in order to ensure the structural strength of the filter module, the tube seat, main tube, scraping disc and multiple filter tubes are all made of stainless steel.

[0016] The beneficial effects of this utility model are as follows:

[0017] This utility model discloses a multi-stage refining system for animal fats. The filter in the multi-stage refining system uses a filter tube instead of a traditional blade filter and is equipped with a scraping disc that can slide up and down in the tank. The scraping disc has a scraping ring at the position where it contacts the outer surface of the filter tube. When the operator pulls it upward, the scraping ring can scrape off the viscous impurities adhering to the outer surface of the filter tube in one go. This is convenient, quick, efficient, and effective, effectively shortening the downtime required to clean the filter and ensuring the production efficiency of animal fat refining. Attached Figure Description

[0018] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of a multi-stage refining system for animal fats described herein;

[0021] Figure 2 This is a schematic diagram of the internal structure of the filter.

[0022] Figure 3 This is a top view of the scraping disc.

[0023] Figure 4 This is a partial structural diagram of the top end of the filter tube;

[0024] Figure 5 This is a partial structural detail diagram of the cooperation between the scraping disc and the filter tube;

[0025] 1. Degumming tank; 2. Deacidification tank; 3. Decolorization tank; 4. Deodorization tower; 5. Filter; 51. Tank body; 511. Inlet connector; 52. Top cover; 53. Filter module; 54. Pipe seat; 541. Connecting branch pipe; 55. Main pipe; 56. Scraping disc; 561. Lifting handle; 562. Scraping ring; 563. Blocking strip; 57. Filter tube; 571. Disassembly handle; 572. Filter hole. Detailed Implementation

[0026] See Figures 1-5A multi-stage refining system for animal fats includes a degumming tank 1, a deacidification tank 2, a decolorization tank 3, a deodorization tower 4, and a filter 5. The degumming tank 1, deacidification tank 2, decolorization tank 3, deodorization tower 4, and filter 5 are connected sequentially by pipes. The degumming tank 1 removes phospholipids and colloidal impurities from the animal fats. The deacidification tank 2 neutralizes free fatty acids and is equipped with a high-speed centrifuge to separate soap residue. The decolorization tank 3 adds mixed activated clay or activated carbon to adsorb pigments. The deodorization tower 4 deodorizes the fats under high-temperature vacuum conditions using steam. The filter 5 removes minute impurities from the fats and includes a tank body 51, a top cover 52, and a filter element module. 53. The tank body 51 is provided with an inlet connector 511, which is connected to the deodorization tower 4 via a pipe. Animal fats deodorized by the deodorization tower 4 can enter the tank body 51 through the inlet connector 511. The top cover 52 is movably connected above the tank body 51 to seal the tank body 51. The filter module 53 includes a pipe seat 54, a main pipe 55, a scraping disc 56, and a plurality of filter tubes 57. The plurality of filter tubes 57 are all vertically arranged in the tank body 51. The filter tubes 57 are provided with a plurality of filter holes 572. Under the action of pressure difference, the animal fats in the tank body 51 can enter the filter tubes 57 through the filter holes 572, while small impurities are filtered out. The filter tube 57 is blocked by an external attachment. The tube seat 54 is located inside the lower end of the tank body 51, and the main pipe 55 is located outside the lower end of the tank body 51. The lower end of the tube seat 54 extends out of the tank body 51 and connects to the main pipe 55. Multiple connecting branch pipes 541 are provided at its upper end. The number of connecting branch pipes 541 is the same as the number of filter tubes 57. The upper end of each connecting branch pipe 541 is threaded to the lower end of the corresponding filter tube 57. Animal fat entering the filter tube 57 can pass through the tube seat 54 into the main pipe 55, completing the refining of the animal fat. The scraping disc 56 is slidably connected to the tank body 51. The scraping disc 56 has a scraping ring 5 at the position where the filter tube 57 passes through. 62. The inner diameter of the scraping ring 562 matches the outer diameter of the filter tube 57. When it is necessary to clean the filter module 53 in the tank 51, the top cover 52 can be opened, and the scraping disc 56 can be lifted from the bottom using tools such as hooks. During the lifting process, the scraping ring 562 can scrape off the viscous impurities attached to the surface of the filter tube 57. After that, the scraping disc 56 can be removed from the tank 51, the viscous impurities can be poured out, and then it can be put back in its original position. The top cover 52 can be closed to complete the cleaning. While ensuring the cleaning effect, it is convenient, quick and saves time and effort. It can greatly shorten the time required to scrape off impurities and reduce the impact of scraping off viscous impurities on the production process and production efficiency.

[0027] See Figure 4 and Figure 5To ensure the structural strength of the filter tube 57, the cross-sectional shape of the filter tube 57 includes a circle with a diameter of 5-10cm and a wall thickness of not less than 5mm. The filter tube 57 designed above has higher structural strength than the sheet-like filter leaf, can avoid deformation by pressure difference, and has a longer service life.

[0028] Furthermore, to facilitate the operation of the filter tube 57, see [reference needed]. Figure 4 The upper end of the filter tube 57 is coaxially fixedly connected to a disassembly handle 571. The shape of the disassembly handle 571 includes an inverted letter U. When the filter tube 57 needs to be disassembled or installed, the operator can hold the disassembly handle 571 and rotate the filter tube 57 to disassemble it. It is also convenient for the operator to take the filter tube 57 out of the tank 51.

[0029] Furthermore, in order to ensure the filtration effect of the filter tube 57, the diameter of the filter hole 572 is 50-100μm. The above design can ensure that animal fat can smoothly enter the filter tube 57, and impurities with a diameter larger than the diameter of the filter hole 572 can be blocked by the filter hole 572.

[0030] See Figure 3 and Figure 5 In order to enable the scraping disc 56 to catch the impurities scraped off by the scraping ring 562 and prevent the scraped impurities from falling back into the tank 51, a blocking strip 563 is fixedly connected to the outer edge of the scraping disc 56. The blocking strip 563 has a height of 5-10cm, which ensures that the viscous impurities scraped off by the scraping ring 562 can enter the scraping disc 56 and will not fall from the edge of the scraping disc 56 into the tank 51.

[0031] Furthermore, in order to ensure that the scraping ring 562 can slide up and down with the scraping disc 56 and can smoothly scrape off the impurities attached to the outer surface of the filter tube 57, the inner diameter of the scraping ring 562 is 0.1-0.3 mm larger than the outer diameter of the filter tube 57, thereby ensuring that the scraping ring 562 can scrape off the impurities while also sliding up and down along the filter tube 57.

[0032] Furthermore, in order to reduce the resistance of the scraping ring 562 when scraping impurities, see... Figure 5 The outer surface of the upper end of the scraping ring 562 is an inclined surface that is narrower at the top and wider at the bottom. An angle α is formed between the inner surface and the outer surface of the upper end of the scraping ring 562. The angle α is 15-30 degrees, which increases the sharpness of the upper end of the scraping ring 562 and reduces the resistance encountered when scraping impurities.

[0033] To prevent the scraping disc 56 from tilting and getting stuck in the tank 51 when it slides up and down within the tank 51, see [reference needed]. Figure 5The height of the scraping ring 562 is not less than the inner diameter of the scraping ring 562, so that the scraping ring 562 can play a guiding role and prevent the scraping disc 56 from tilting when it slides up and down, which would cause the scraping disc 56 to get stuck.

[0034] For ease of operation, use the hook rod to lift the scraping disc 56, see [link / reference] Figure 3 The scraping disc 56 has a lifting handle 561 in the middle of its upper surface. Preferably, the lifting handle 561 is shaped like an inverted letter U. The operator can use a hook rod to reach into the bottom of the tank 51 and use the hook fixed at the top of the hook rod to hook the lifting handle 561, thereby lifting the scraping disc 56 out of the tank 51.

[0035] Preferably, in order to ensure the structural strength of the filter module 53, the tube seat 54, the main tube 55, the scraping disc 56 and the plurality of filter tubes 57 are all made of stainless steel. This ensures the structural strength of the filter module 53 and also prevents the filter module 53 from being oxidized and causing oil oxidation or contamination after supplementary feeding.

Claims

1. An animal oil multi-stage refining system comprising a degumming tank (1), a deacidification tank (2), a decoloring tank (3), a deodorization tower (4) and a filter (5), wherein pipes are sequentially arranged between the degumming tank (1), the deacidification tank (2), the decoloring tank (3), the deodorization tower (4) and the filter (5) for connection, characterized in that, The filter (5) comprises a tank body (51), an upper cover (52) and a filter core module (53), the tank body (51) is provided with an inlet joint (511) on the top, the inlet joint (511) is connected with the deodorization tower (4) through a pipeline, the upper cover (52) is movably connected above the tank body (51), the filter core module (53) comprises a pipe base (54), a main pipe (55), a scraping disc (56) and a plurality of filter pipes (57), the plurality of filter pipes (57) are vertically arranged in the tank body (51), the filter pipes (57) are provided with a plurality of filter holes (572), the pipe base (54) is arranged at the lower end inside the tank body (51), the main pipe (55) is arranged at the lower end outside the tank body (51), the lower end of the pipe base (54) extends out of the tank body (51) and is connected with the main pipe (55), the upper end of the pipe base (54) is provided with a plurality of connecting branch pipes (541), the number of the connecting branch pipes (541) is the same as that of the filter pipes (57), the upper end of the connecting branch pipe (541) is threadedly connected with the lower end of the corresponding filter pipe (57), the scraping disc (56) is slidably connected in the tank body (51), the scraping disc (56) is provided with a scraping ring (562) at the position where the filter pipe (57) passes through, and the inner diameter of the scraping ring (562) matches the outer diameter of the filter pipe (57).

2. The animal fat multi-stage refining system according to claim 1, wherein, The cross-sectional shape of the filter pipe (57) comprises a circle, the diameter is 5-10 cm, and the wall thickness is not less than 5 mm.

3. The animal fat multi-stage refining system according to claim 2, wherein, The upper end of the filter pipe (57) is coaxially fixedly connected with a dismounting handle (571), and the shape of the dismounting handle (571) comprises an inverted letter U shape.

4. The animal fat multi-stage refining system according to claim 3, wherein, The diameter of the filter hole (572) is 50-100 μm.

5. The animal fat multi-stage refining system of claim 1, wherein, The outer edge of the scraping disc (56) is fixedly connected with a blocking strip (563), and the height of the blocking strip (563) is 5-10 cm.

6. The animal fat multi-stage rendering system of claim 5, wherein, The inner diameter of the scraping ring (562) is 0.1-0.3 mm larger than the outer diameter of the filter pipe (57).

7. The animal fat multi-stage rendering system of claim 6, wherein, The outer side surface of the upper end of the scraping ring (562) is an inclined surface which is narrow at the top and wide at the bottom, an angle a is formed between the inner side surface and the outer side surface of the upper end of the scraping ring (562), and the angle of the angle a is 15-30 degrees.

8. The animal fat multi-stage rendering system of claim 1, wherein, The height of the scraping ring (562) is not less than the inner diameter of the scraping ring (562).

9. The animal fat multi-stage refining system of claim 1, wherein, The upper side surface of the scraping disc (56) is provided with a lifting handle (561) in the middle, and the shape of the lifting handle (561) comprises an inverted letter U shape.

10. The animal fat multi-stage rendering system of claim 1, wherein, The pipe base (54), the main pipe (55), the scraping disc (56) and the plurality of filter pipes (57) are all made of stainless steel.

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