Vacuum steam deodorization tank for fish oil production and processing

Abstract

The invention discloses a vacuum steam deodorization tank for producing and processing fish oil, which is based on a conventional vacuum steam deodorization technology, adopts a mode of taking away volatile light substances in grease by gas-liquid two-phase convection heat exchange evaporation, and uniformly distributes the fish oil flowing downwards by utilizing a material distribution mechanism in the gas-liquid two-phase convection process, so that the fish oil is uniformly distributed; the fish oil forms a layer of thin oil film which flows downwards on the outer walls of the plurality of heat conduction material distribution columns and the inner wall of the hollow tank body, in a high-temperature vacuum environment in the vacuum tank, heat exchange is carried out between high-temperature steam which is uniformly sprayed upwards and the oil film, gas-liquid two-phase flow impact is carried out, light substances which are easy to evaporate are more easily separated from the oil, and the oil quality is improved. And a plurality of vacuum tanks which are communicated end to end are arranged in a combined manner, so that repeated circulating vacuum steam deodorization treatment is carried out under the condition of continuous flowing of fish oil in a continuous feeding and conveying mode, and the deodorization effect is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil deodorization processing, and more specifically to a vacuum steam deodorization tank for fish oil production and processing. Background Art

[0002] The refining of fish oil requires alkali refining, bleaching, deodorization and other processes to ensure that the quality and color of the fish oil meet the requirements for use and consumption. At present, the main method for deodorizing fish oil is to heat the oil to a certain temperature, then pass steam under high vacuum to remove the volatile substances in the oil to achieve the purpose of deodorization.

[0003] The conventional vacuum steam deodorization device heats the fish oil by introducing high-temperature steam to make the temperature of the fish oil reach above 200°C, thereby promoting the volatilization and decomposition of odorous substances. For example, patent number CN103897802B discloses an experimental oil deodorization device, which uses a heater to heat and remove water from the material in the reaction tank, and steam enters the reaction tank through a steam injection pipe to perform high-temperature deodorization on the material. Then, a vacuum pump provides negative pressure to the reaction tank to extract steam from the material, and the steam is discharged from the vacuum pump with the odor in the material, thereby achieving a deodorization effect.

[0004] However, during the working process, the materials to be processed are loaded into the reaction tank at one time. The material flow in a single reaction tank is large and piled up, and its flow performance is poor, and it is difficult to mix evenly with steam, thereby reducing the deodorization effect. Therefore, a vacuum steam deodorization tank for fish oil production and processing is proposed to address the above problems. Summary of the invention

[0005] The invention aims to solve the problem that loading materials at one time easily leads to poor flow performance and difficulty in uniformly mixing with steam, thus affecting the deodorization effect, so as to provide a vacuum steam deodorization tank for fish oil production and processing.

[0006] The purpose of the present invention can be achieved by the following technical scheme: A vacuum steam deodorization tank for fish oil production and processing, comprising an outer tank body and a plurality of vacuum tanks annularly distributed inside the outer tank body, wherein the vacuum tank comprises an exhaust top sleeve and a hollow tank body distributed up and down, and a steam outlet pipe leading to the top of the outer tank body is fixedly connected to the top of the exhaust top sleeve;

[0007] A material distribution mechanism is embedded and installed inside the hollow tank body, the top of one of the hollow tank bodies is externally connected to a feed pipe connected to the top of the material distribution mechanism, the bottom of another hollow tank body arranged adjacent to the hollow tank body is externally connected to an oil discharge pipe leading to the outside of the outer tank body, and the other two adjacent hollow tank bodies are interconnected through a circulation pipe, one end of the circulation pipe is connected to the bottom of the hollow tank body, and the other end of the circulation pipe is connected to the material distribution mechanism inside another hollow tank body through a circulation pump, and an air distribution component located below the material distribution mechanism is embedded and installed at the bottom of each hollow tank body;

[0008] The material distribution mechanism comprises a heating cylinder coaxially arranged with the hollow tank body, a conical material distribution seat extending to the bottom end of the exhaust top sleeve is fixed on the heating cylinder, and a diversion hanging assembly suspended downward is fixedly sleeved on the top end of the heating cylinder.

[0009] Furthermore, the air distribution assembly includes an annular tube embedded in the bottom of the exhaust top sleeve and having multiple air nozzles in the circumferential direction. The annular tube is connected to a steam inlet pipe leading to the outside of the outer tank body, and a flow meter valve is installed on the steam inlet pipe.

[0010] Furthermore, the other ends of the plurality of steam outlet pipes are commonly connected to a vacuum pump, the other end of the vacuum pump is connected to a condenser, and each steam outlet pipe is installed with a flow meter valve 2.

[0011] Furthermore, a heater is fixedly installed inside the heating tube, and the heating tube is a hollow cylindrical structure made of heat-conducting material. The bottom end of the heating tube is fixedly connected to the inner wall of the bottom end of the hollow tank body through a plurality of bottom plate distributed in an annular manner.

[0012] Furthermore, the conical distribution seat includes an upper conical seat and a lower conical seat which are arranged in an upper and lower socketed manner, and a conical distribution groove which is narrow at the top and wide at the bottom is reserved between the upper conical seat and the lower conical seat. A plurality of inner armature plates connecting the lower conical seat and the upper conical seat are annularly distributed on the inner wall of the conical distribution groove, and a feed hole for connecting with a feed pipe or a circulation pipe is opened at the top of the upper conical seat, and a plurality of outer armature plates fixedly connected to the inner wall of the hollow tank body are annularly fixed to the outer end of the upper conical seat.

[0013] Furthermore, the diversion hanging assembly includes a guide platform fixedly sleeved on the top of the heating cylinder and adjacent to the bottom of the conical distribution trough, and the guide platform is provided with a plurality of guide holes in a circular shape along its circumferential direction, and a heat-conducting distribution column vertically arranged downward is sleeved inside each guide hole.

[0014] Furthermore, the guide hole is a conical structure that is wide at the top and narrow at the bottom, and the heat-conducting material column is a conical structure that is narrow at the top and wide at the bottom.

[0015] Furthermore, the heat-conducting material distribution column includes a lower cylinder fixedly connected to the outer wall of the heating cylinder through a heat-conducting plate, an upper cylinder movably connected to the lower cylinder and extending to the inside of the guide hole, and a vibrating rod extending into the upper cylinder is embedded and installed inside the lower cylinder.

[0016] Furthermore, a discharge gap is reserved between the top of the upper cylinder and the inner wall of the guide hole, and a guide gap is reserved between the outer edge of the guide platform and the inner wall of the hollow tank.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) This scheme is based on conventional vacuum steam deodorization technology, which uses gas-liquid countercurrent heat exchange to evaporate and remove volatile light substances in oil. During the gas-liquid countercurrent process, the downward-flowing fish oil is evenly distributed by a distribution mechanism, so that the fish oil forms a thin oil film that flows downward on the outer walls of multiple heat-conducting distribution columns and the inner wall of the hollow tank. In the high-temperature vacuum environment in the vacuum tank, the high-temperature steam uniformly sprayed upward is used to exchange heat with the oil film. The gas-liquid countercurrent impact makes it easier for the evaporable light substances to be separated from the oil, thereby improving the evaporation effect of the light substances.

[0019] (2) In this scheme, multiple vacuum tanks connected end to end are configured to carry out multiple cycles of vacuum steam deodorization treatment in a continuous feeding mode under the condition of continuous flow of fish oil, so as to further improve the deodorization effect. Each vacuum tank is provided with a steam inlet pipe with steam flow monitoring to continuously and stably introduce fish oil. The fish oil introduction flow rate is set, and the first steam supply flow rate is determined according to the amount of fish oil introduced for the first time. The steam action coefficient is obtained from the fish oil introduction flow rate and the steam supply flow rate. According to the number of cycles, the steam action coefficient is reduced by a preset ratio to obtain the steam action coefficient obtained by the treatment of each vacuum tank in turn. Therefore, the steam supply flow rate introduced into the next vacuum tank can be obtained according to the fish oil introduction flow rate introduced into the next vacuum tank after deodorization. The steam supply flow rate is gradually reduced according to the treatment process of multiple vacuum tanks to save energy and avoid excessive treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0021] Figure 2 is a cross-sectional view of the present invention;

[0022] Figure 3 A top view of a plurality of vacuum tanks arranged in a ring according to the present invention;

[0023] Figure 4 A partial cross-sectional view of a plurality of vacuum tanks arranged in an annular manner according to the present invention;

[0024] Figure 5 is an internal cross-sectional view of the vacuum tank of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the vacuum tank of the present invention from another perspective;

[0026] Figure 7 is a cross-sectional view of the exhaust top sleeve of the present invention;

[0027] Figure 8 It is a schematic structural diagram of the junction between the heating cylinder and the conical cloth seat of the present invention;

[0028] Fig. 9It is a partial cross-sectional view of the junction between the heating cylinder and the conical cloth seat of the present invention;

[0029] Fig.10 This is a schematic diagram of the structure of a single vacuum tank of the present invention for steam deodorization treatment.

[0030] Description of the numbers in the figure:

[0031] 1. Outer tank body; 2. Vacuum tank; 21. Hollow tank body; 22. Exhaust top sleeve; 221. Exhaust groove; 222. Drain hole; 3. Feed pipe; 4. Circulation pipe; 5. Steam inlet pipe; 501. Flow meter valve 1; 6. Steam outlet pipe; 601. Flow meter valve 2; 7. Oil drain pipe; 8. Heating cylinder; 801. Bottom chute plate; 9. Conical material distribution seat; 91. Lower cone seat; 911. Inner chute plate; 92. Upper cone seat; 921. Outer chute plate; 10. Guide platform; 101. Guide hole; 102. Guide gap; 11. Heat conduction material distribution column; 111. Heat conduction plate; 112. Vibrating rod; 12. Annular tube; 121. Jet nozzle. DETAILED DESCRIPTION

[0032] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0033] Embodiment 1: In view of the fact that the materials to be processed are loaded into the reaction tank at one time, the material flow rate in a single reaction tank is large and piled up, and its flow performance is poor, and it is difficult to mix evenly with steam, thereby reducing the deodorization effect. The following technical solution is proposed:

[0034] The present invention discloses a vacuum steam deodorization tank for fish oil production and processing, please refer to Figure 1-Figure 4 , including an outer tank body 1 and a plurality of vacuum tanks 2 annularly distributed therein, the vacuum tank 2 including an exhaust top sleeve 22 and a hollow tank body 21 distributed up and down, the top of the exhaust top sleeve 22 is fixedly connected with a steam outlet pipe 6 leading to the top of the outer tank body 1, and a material distribution mechanism is embedded and installed inside the hollow tank body 21;

[0035] The top of one of the hollow tank bodies 21 is externally connected to a feed pipe 3 connected to the top of a material distribution mechanism, and the bottom of another hollow tank body 21 arranged adjacent to the hollow tank body 21 is externally connected to an oil discharge pipe 7 leading to the outside of the outer tank body 1, and the other two adjacent hollow tank bodies 21 are interconnected through a circulation pipe 4, one end of the circulation pipe 4 is connected to the bottom of the hollow tank body 21, and the other end of the circulation pipe 4 is connected to the material distribution mechanism inside another hollow tank body 21 through a circulation pump, and the fish oil processed by the previous vacuum tank 2 is introduced into the next vacuum tank 2 through the circulation pipe 4 for further processing;

[0036] See also Figure 4-Figure 6 , an air distribution component located below the material distribution mechanism is embedded at the bottom of each hollow tank body 21, and the air distribution component includes an annular tube 12 embedded in the bottom of the exhaust top sleeve 22 and having multiple air nozzles 121 in the circumferential direction, the annular tube 12 is externally connected to a steam inlet pipe 5 leading to the outside of the outer tank body 1, a flow meter valve 501 is installed on the steam inlet pipe 5, and a plurality of steam outlet pipes 6 are commonly connected to a vacuum pump at the other end, and a condenser is connected to the other end of the vacuum pump, and each steam outlet pipe 6 is installed with a flow meter valve 601;

[0037] This scheme is based on conventional vacuum steam deodorization technology, and adopts the method of gas-liquid countercurrent heat exchange evaporation to remove volatile light substances in oil. Before the treatment work, a vacuum pump is used to evacuate multiple vacuum tanks 2, and then the fish oil material to be processed is introduced into the first vacuum tank 2 by the feed pipe 3. The fish oil material is evenly distributed inside the vacuum tank 2 through the distribution mechanism, and the high-temperature steam sprayed upward is used for heat exchange evaporation, so that the volatile light substances in the fish oil are evaporated and discharged upward with the steam from the exhaust top sleeve 22 and the steam outlet pipe 6;

[0038] See also Figure 6 , Figure 7 The exhaust top sleeve 22 is a truncated cone structure that is narrow at the top and wide at the bottom. A plurality of exhaust grooves 221 distributed inside and outside are provided inside the exhaust top sleeve 22. A drainage hole 222 connected to the tops of the plurality of exhaust grooves 221 is provided at the top of the exhaust top sleeve 22. The cross section of the exhaust groove 221 is an L-shaped structure that is arranged in a manner similar to the drainage hole 222. When viewed from the cross section, the exhaust groove 221 has a short portion arranged outwardly and tilted at the bottom and a long portion arranged inwardly and tilted at the top, which has an airflow guiding and intercepting function, and its function is to prevent the fish oil droplets with a small flow rate from being carried upward by water vapor. The fish oil macromolecules are intercepted by the curved surface 211 and fall back into the cloth mechanism under the action of gravity.

[0039] See also Figure 4The fish oil that has been treated once flows to the bottom of the hollow tank body 21 and is then extracted by the circulation pipe 4 into the next vacuum tank 2 for circulating steam treatment. In this way, multiple vacuum tanks 2 that are connected end to end are configured. Compared with the existing static treatment of materials that are loaded with sufficient flow in a single tank body at one time, the present invention uses a continuous feeding mode to perform multiple cyclic vacuum steam deodorization treatments under the condition of continuous flow of fish oil, thereby improving the deodorization effect. Finally, the treated fish oil is discharged outwardly from the oil discharge pipe 7.

[0040] Embodiment 2: Based on Embodiment 1, this embodiment improves the structure of the material distribution mechanism, and implements a better steam treatment method based on the improved material distribution mechanism, as follows:

[0041] See also Figure 5 , Figure 6 The material distributing mechanism includes a heating cylinder 8 coaxially arranged with the hollow tank body 21, a conical material distributing seat 9 extending to the bottom end of the exhaust top sleeve 22 is fixed on the heating cylinder 8, a shunt material hanging assembly suspended downward is fixedly sleeved on the top end of the heating cylinder 8, a heater is fixedly installed inside the heating cylinder 8, and the heater can also be installed on the outer wall of the heating cylinder 8 and staggered with the shunt material hanging assembly, and the heater is used to provide a high temperature environment for the inside of the vacuum tank 2, the heating cylinder 8 is a hollow cylindrical structure made of heat-conducting material, and the bottom end of the heating cylinder 8 is fixedly connected to the inner wall of the bottom end of the hollow tank body 21 through a plurality of bottom chuck plates 801 distributed in an annular manner, so that the inner wall of the vacuum tank 2 and the shunt material hanging assembly and other structures are heated by heat conduction;

[0042] Among them, see Figure 8 , Fig. 9 The conical material distributing seat 9 comprises an upper conical seat 92 and a lower conical seat 91 which are sleeved up and down, a conical material distributing groove which is narrow at the top and wide at the bottom is reserved between the upper conical seat 92 and the lower conical seat 91, a plurality of inner yoke plates 911 which are connected to the lower conical seat 91 and the upper conical seat 92 are distributed in an annular manner on the inner wall of the conical material distributing groove, a feeding hole for communicating with the feeding pipe 3 or the circulation pipe 4 is opened at the top of the upper conical seat 92, and a plurality of outer yoke plates 921 which are fixedly connected to the inner wall of the hollow tank body 21 are fixed in an annular manner on the outer end of the upper conical seat 92;

[0043] See also Figure 5 , Figure 6 as well as Fig.10 The flow distribution and hanging assembly includes a guide platform 10 fixedly sleeved on the top of the heating cylinder 8 and arranged adjacent to the bottom of the conical distribution trough. The guide platform 10 is provided with a plurality of guide holes 101 in a circular manner along its circumferential direction. The guide holes 101 are conical structures that are wide at the top and narrow at the bottom. A heat-conducting distribution column 11 vertically downwardly arranged is sleeved inside each guide hole 101. The heat-conducting distribution column 11 is a conical structure that is narrow at the top and wide at the bottom.

[0044] The heat-conducting material distribution column 11 includes a lower cylinder fixedly connected to the outer wall of the heating cylinder 8 through a heat-conducting plate 111, an upper cylinder movably connected to the lower cylinder extending to the inside of the guide hole 101, a vibrating rod 112 extending to the inside of the upper cylinder is embedded and installed inside the lower cylinder, a discharge gap is reserved between the top of the upper cylinder and the inner wall of the guide hole 101, and a guide gap 102 is reserved between the outer edge of the guide platform 10 and the inner wall of the hollow tank body 21;

[0045] The fish oil to be processed is injected into the feed hole through the feed pipe 3 by a certain feed pressure, and is evenly distributed on the guide platform 10 in a radial shape downward along the conical distribution groove, and flows outward along the end surface of the guide platform 10. Part of the fish oil moves evenly downward through a plurality of guide holes 101, and is distributed on the heat-conducting distribution column 11 through the discharge gap, and a thin oil film is formed on the outer wall of the heat-conducting distribution column 11 from top to bottom. The heat-conducting distribution column 11 is set to a conical structure that is narrow at the top and wide at the bottom, which makes it easier for the oil to be distributed and cast from top to bottom.

[0046] During the film forming process, the vibrating rod 112 in the heat-conducting material distribution column 11 is started, and the oil film on the heat-conducting material distribution column 11 is made to be in a molecular vibration state by the vibrating rod 112, so as to further promote the evaporation of light material molecules in the oil film after the high-temperature steam contacts the oil film. The top of the heat-conducting material distribution column 11 is arranged to be movable, which makes it easier for the upper cylinder to vibrate inside the guide hole 101, and is conducive to avoiding the blockage of grease in the small space of the discharge gap.

[0047] The other part of the fish oil flows downward along the inner wall of the hollow tank body 21 through the guide gap 102, and also forms a thin oil film on the inner wall of the hollow tank body 21, thereby expanding the fish oil casting expansion area. In this process, the inside of the vacuum tank 2 is continuously evacuated by the steam outlet pipe 6, and at the same time, the high temperature environment in the vacuum tank 2 and the high temperature steam uniformly sprayed upward are used to exchange heat with the oil film, thereby expanding the steam heat exchange treatment surface, effectively extracting the volatile light substances in the oil and fat, and passing through the exhaust top sleeve 22 with the rising steam, and finally discharged from the steam outlet pipe 6;

[0048] The fish oil after the initial treatment flows to the bottom of the hollow tank body 21 under the action of gravity, and is drawn into the distribution mechanism of the next hollow tank body 21 by the circulation pipe 4, and the cycle is repeated in this way. In the continuous feeding mode, multiple cycles of vacuum steam deodorization treatment are carried out under the condition of continuous flow of fish oil, thereby further improving the deodorization effect.

[0049] Embodiment 3: This embodiment is described as follows in combination with Embodiment 1 and Embodiment 2:

[0050] During the whole fish oil vacuum steam deodorization process, at the initial stage of deodorization, the content of odorous substances in the oil is relatively high, and its volatilization speed is relatively fast, and it can be taken out by steam relatively quickly. At this time, the difference between the steam flow rate introduced by the steam inlet pipe 5 and the steam flow rate discharged by the steam outlet pipe 6 is relatively large. However, as the deodorization continues, the odorous light substances in the oil gradually decrease, and the volatilization speed slows down.

[0051] In the later stage of deodorization, the required steam flow rate is reduced according to the reduction of fish oil flow rate. When approaching the end of deodorization, most of the odorous substances in the oil have been removed, and the remaining small amount of odorous substances is difficult to volatilize. At this time, it is only necessary to maintain a relatively stable and small steam flow rate to make these odorous substances slowly volatilize and discharge;

[0052] To continuously and stably introduce fish oil, set the fish oil inflow rate to Y i , the fish oil in the previous vacuum tank 2 is pumped into the next vacuum tank 2 by a circulation pump, and the flow rate of the fish oil in the circulation process is recorded, i is 1, 2, 3, 4, Y i The flow rate of fish oil entering the first vacuum tank 2 and the flow rate of fish oil entering the subsequent multiple vacuum tanks 2 are respectively;

[0053] A steam inlet pipe 5 for independent steam supply and steam flow monitoring is configured at the bottom of each vacuum tank 2. The steam flow rate entering the multiple vacuum tanks 2 is set as the steam supply flow rate, marked as QJ i , i also takes 1, 2, 3, 4, indicating the steam flow rate into the multiple 2s before and after.

[0054] The steam action coefficient ZX is calculated based on the fish oil inlet flow rate and steam supply flow rate. i , a and b are both natural numbers greater than 0. a and b are proportional coefficients of the fish oil flow rate and the steam supply flow rate, respectively. The first fish oil flow rate Y 1 is a fixed value, according to the fish oil inlet flow rate Y 1 The steam supply flow QJ that is first introduced into the vacuum tank 2 is determined by 1 , which is also a constant value, and the steam action coefficient ZX generated by the fish oil in the first vacuum tank 2 is obtained 1 ;

[0055] According to the actual deodorization process, the flow rate of the light substances that are easy to evaporate carried out is less and less in the later stage of deodorization, and the amount of high-temperature steam required to be used is gradually reduced relative to the gradually reduced flow rate of fish oil. Therefore, it can be obtained that the steam action coefficient generated by the circulation treatment through the vacuum tank 2 from front to back is gradually reduced;

[0056] According to the number of cycles, the steam action coefficient is decreased at a preset ratio, and the steam action coefficient obtained by the treatment of each vacuum tank 2 is obtained in turn. Therefore, the steam supply flow rate into the next vacuum tank 2 can be obtained according to the fish oil flow rate into the next vacuum tank 2 after deodorization. On the premise of sufficient deodorization, the steam supply flow rate is gradually decreased according to the treatment process of multiple vacuum tanks 2, that is, more steam will be introduced in the early stage to ensure the rapid removal of a large amount of odorous substances, and the steam input will be appropriately reduced in the later stage to save energy and avoid excessive treatment.

[0057] A steam outlet pipe 6 for monitoring steam flow is also provided at the top of each vacuum tank 2, which can be used to monitor the steam flow discharged after a single steam high-temperature evaporation treatment, and to perform double monitoring of the entire deodorization process, that is, in the early stage of deodorization, the difference between the steam flow introduced by the steam inlet pipe 5 and the steam flow discharged by the steam outlet pipe 6 is relatively large;

[0058] Towards the end of deodorization, the steam flow rate introduced through the steam inlet pipe 5 and the steam flow rate discharged through the steam outlet pipe 6 gradually approach each other, reflecting that the deodorization work is nearing completion and the deodorization effect has reached the standard. The temperature in the vacuum tank 2 and the steam circulation speed can be adjusted according to the difference between the steam flow rate introduced through the steam inlet pipe 5 and the steam flow rate discharged through the steam outlet pipe 6 to achieve a more effective deodorization effect.

[0059] The present invention is based on conventional vacuum steam deodorization technology, and adopts a gas-liquid countercurrent heat exchange evaporation method to remove volatile light substances in oils and fats. During the gas-liquid countercurrent process, a distribution mechanism is used to guide the downward flowing fish oil to make it uniform, so that the fish oil forms a thin oil film that continuously flows downward on the outer walls of multiple heat-conducting distribution columns 11 and the inner wall of the hollow tank body 21. Under the high-temperature vacuum environment in the vacuum tank 2, high-temperature steam uniformly sprayed upward is used to exchange heat with the oil film, and the gas-liquid countercurrent impact makes it easier to separate the volatile light substances from the oils and fats, thereby improving the evaporation effect of the light substances. In addition, multiple vacuum tanks 2 connected end to end are configured, and multiple cycles of vacuum steam deodorization treatment are carried out in a continuous feeding mode under the condition of continuous flow of fish oil, thereby further improving the deodorization effect.

[0060] The above are only preferred specific implementation modes of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A vacuum steam deodorization tank for fish oil production and processing, comprising an outer tank body (1) and a plurality of vacuum tanks (2) annularly distributed inside the outer tank body, characterized in that: The vacuum tank (2) comprises an exhaust top sleeve (22) and a hollow tank body (21) which are arranged vertically, and a steam outlet pipe (6) leading to the top of the outer tank body (1) is fixedly connected to the top of the exhaust top sleeve (22); A material distribution mechanism is embedded and installed inside the hollow tank body (21); the top end of one of the hollow tank bodies (21) is externally connected to a material feeding pipe (3) connected to the top end of the material distribution mechanism; the bottom end of another hollow tank body (21) arranged adjacent to the hollow tank body (21) is externally connected to an oil drain pipe (7); the ends of the other two adjacent hollow tank bodies (21) are interconnected via a circulation pipe (4); and an air distribution component is embedded and installed at the bottom end of each hollow tank body (21); The material distribution mechanism comprises a heating cylinder (8) arranged coaxially with the hollow tank body (21), a conical material distribution seat (9) extending to the bottom end of the exhaust top sleeve (22) is fixed on the heating cylinder (8), and a diversion hanging assembly suspended downward is fixedly sleeved on the top end of the heating cylinder (8).

2. The vacuum steam deodorization tank for fish oil production and processing according to claim 1, characterized in that: The gas distribution assembly comprises an annular tube (12) embedded in the bottom of the exhaust top sleeve (22) and provided with a plurality of gas nozzles (121) in the circumferential direction; the annular tube (12) is externally connected to a steam inlet pipe (5) leading to the outside of the outer tank body (1); and a flow meter valve (501) is installed on the steam inlet pipe (5).

3. The vacuum steam deodorization tank for fish oil production and processing according to claim 1, characterized in that: The other ends of the plurality of steam outlet pipes (6) are commonly connected to a vacuum pump, the other end of the vacuum pump is connected to a condenser, and each steam outlet pipe (6) is provided with a flow meter valve 2 (601).

4. The vacuum steam deodorization tank for fish oil production and processing according to claim 1, characterized in that: A heater is fixedly installed inside the heating tube (8). The heating tube (8) is a hollow cylindrical structure made of heat-conducting material. The bottom end of the heating tube (8) is fixedly connected to the inner wall of the bottom end of the hollow tank body (21) via a plurality of bottom bracket plates (801) distributed in an annular manner.

5. The vacuum steam deodorization tank for fish oil production and processing according to claim 1, characterized in that: The conical material distribution seat (9) comprises an upper conical seat (92) and a lower conical seat (91) which are sleeved together in an upper and lower manner, a conical material distribution groove which is narrow at the top and wide at the bottom is reserved between the upper conical seat (92) and the lower conical seat (91), a plurality of inner yoke plates (911) which are connected to the lower conical seat (91) and the upper conical seat (92) are annularly distributed on the inner wall of the conical material distribution groove, a material feed hole is provided at the top end of the upper conical seat (92), and a plurality of outer yoke plates (921) which are fixedly connected to the inner wall of the hollow tank body (21) are annularly fixed to the outer end of the upper conical seat (92).

6. The vacuum steam deodorization tank for fish oil production and processing according to claim 1, characterized in that: The flow-dividing hanging material assembly comprises a flow guide platform (10) fixedly sleeved on the top end of the heating cylinder (8) and adjacent to the bottom end of the conical material distribution trough, the flow guide platform (10) is provided with a plurality of flow guide holes (101) in an annular shape along its circumferential direction, and each flow guide hole (101) is sleeved with a heat-conducting material distribution column (11) vertically arranged downward.

7. The vacuum steam deodorization tank for fish oil production and processing according to claim 6, characterized in that: The guide hole (101) is a conical structure that is wide at the top and narrow at the bottom, and the heat-conducting material distribution column (11) is a conical structure that is narrow at the top and wide at the bottom.

8. The vacuum steam deodorization tank for fish oil production and processing according to claim 7, characterized in that: The heat-conducting material distribution column (11) comprises a lower cylinder fixedly connected to the outer wall of the heating cylinder (8) via a heat-conducting plate (111), an upper cylinder movably connected to the lower cylinder and extending to the inside of the flow guide hole (101), and a vibration rod (112) extending into the upper cylinder is embedded and installed inside the lower cylinder.

9. The vacuum steam deodorization tank for fish oil production and processing according to claim 8, characterized in that: A discharge gap is reserved between the top of the upper cylinder and the inner wall of the guide hole (101), and a guide gap (102) is reserved between the outer edge of the guide platform (10) and the inner wall of the hollow tank body (21).

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