A special equipment for deacidification and deodorization of vegetable oil

Abstract

This invention relates to the field of vegetable oil deacidification and deodorization technology, and particularly to a special equipment for vegetable oil deacidification and deodorization, comprising a shell, and further comprising: a distillation unit including a distillation tank, the main body of which is connected to a distillation water pipe and a feed pipe; a steam unit including a steam tank, which is connected to the distillation unit by a feed pipe, and the steam tank is connected to a steam pipe; an evaporation unit including an evaporation tank, which is connected to the steam unit by a feed pipe, and the evaporation tank is connected to a discharge pipe; and a condensation unit including a condenser pipe, one end of which is connected to the distillation tank, the steam tank, and the evaporation tank, and the other end of which is connected to a condensation tank; the distillation tank, the steam tank, and the evaporation tank are all equipped with heating plates for heating the material. This invention has the following beneficial effects: by using distillation and evaporation and steam injection to pre-treat and secondary treat the vegetable oil respectively, better deacidification and deodorization effects are achieved; by using the evaporation unit to evaporate the residual water in the vegetable oil, the product quality is better.

Description

Technical Field

[0001] This invention relates to the field of vegetable oil deacidification and deodorization technology, and in particular to a special equipment for vegetable oil deacidification and deodorization. Background Technology

[0002] Edible vegetable oils are edible fats made from edible vegetable oilseeds or crude vegetable oils. Common examples include soybean oil, rapeseed oil, peanut oil, sesame oil, and blended vegetable oils. After initial processing, edible vegetable oils require further refining to remove solid impurities, free fatty acids, phospholipids, gums, waxes, pigments, and off-odors. Deacidification and deodorization are crucial steps in the refining process, primarily aimed at removing substances that affect the oil's odor and taste, as well as free acids. This process involves introducing steam into the oil, distilling out free fatty acids with the steam, and then removing them after condensation. Alternatively, hot water can be mixed with the oil to emulsify it, and after clarification, a centrifuge can be used to remove free fatty acids and plant mucilage. The key to deacidification and deodorization of vegetable oils is ensuring sufficient contact between the oil and steam to hydrate the oil and remove impurities.

[0003] To ensure sufficient contact between steam and vegetable oil, Chinese Patent Application No. CN201910735666.4 discloses a steam-stirred vegetable oil refining and deodorizing device. The device includes a frame, with a fixed sleeve fixedly installed inside the frame. A rotating sleeve is fitted inside the fixed sleeve. A first gear is fixedly installed on the outer periphery of the bottom end of the rotating sleeve. A second gear meshes with the first gear near the center of the frame, and a third gear is fixedly installed at the bottom end of the second gear. This steam-stirred vegetable oil refining and deodorizing device, through the ejection of pressurized steam, causes the vegetable oil to rotate, avoiding the use of traditional stirring devices. It is simpler and more effective, and allows for intermittent changes in the rotation direction of the vegetable oil, improving the fusion effect between steam and the plant. It also removes foam from the surface of the vegetable oil, improving the refining effect and enhancing the taste of the vegetable oil.

[0004] However, simply adding steam is not enough to fully deacidify vegetable oils; the effectiveness and efficiency of deacidification and deodorization need to be improved. Summary of the Invention

[0005] The purpose of this invention is to provide a special equipment for deacidifying and deodorizing vegetable oils, which can more fully and efficiently deacidify and deodorize vegetable oils compared with existing technologies.

[0006] The above-mentioned technical objective of this invention is achieved through the following technical solution: a special device for deacidifying and deodorizing vegetable oil, comprising a shell, and further comprising:

[0007] The distillation unit includes a distillation tank, and its main body is connected to a distillation water pipe and a feed pipe;

[0008] The steam unit includes a steam box, which is connected to the distillation unit by a feed pipe, and the steam box is connected to the steam pipe;

[0009] An evaporation unit includes an evaporation chamber, which is connected to a steam unit via a second conveying pipe, and the evaporation chamber is connected to a discharge pipe;

[0010] The condensation unit includes a condenser tube, one end of which is connected to the distillation tank, the steam tank, and the evaporation tank, and the other end is connected to the condenser.

[0011] The distillation tank, steam tank, and evaporation tank are all equipped with heating plates for heating the materials.

[0012] By adopting the above technical solution, the vegetable oil deacidification and deodorization equipment of the present invention, when in use, first uses a distillation unit to pre-treat the vegetable oil. Specifically, distilled water and vegetable oil are added to the distillation tank through a distillation water pipe and a feed pipe, respectively, and then heated. The distilled water generates steam, which carries the free fatty acids in the edible vegetable oil and is discharged to the condenser. Then, a steam unit is used to perform secondary treatment on the vegetable oil. Specifically, the vegetable oil is transferred from the distillation tank to the steam tank through a feed pipe, and steam is input into the steam tank through a steam pipe. After the steam mixes with the vegetable oil, it carries the free fatty acids in the vegetable oil into the condenser. The steam is condensed by the condenser and then enters the condenser for recovery. The evaporation unit is used to remove water from the vegetable oil. After deacidification and deodorization, the vegetable oil enters the evaporation tank through a feed pipe. Since the vegetable oil still contains water after deacidification and deodorization, the residual water in the vegetable oil can be removed by heating and evaporating in the evaporation tank. The vegetable oil after evaporation and dehydration is discharged through a discharge pipe.

[0013] Preferably, the steam box is provided with a conveying pipe connected to a steam pipe, and an extension pipe is connected to the side of the conveying pipe. The extension pipe is connected to the conveying pipe, and an air jet hole is opened on the side of the extension pipe.

[0014] By adopting the above technical solution, after the vegetable oil is added to the steam box, the extension pipe extending from the side of the conveying pipe to its periphery has a large contact surface. Steam is sprayed out through the jet holes on the extension pipe, so that the steam can fully contact the vegetable oil, which improves the fusion effect of steam and vegetable oil and makes the deacidification and deodorization effect better.

[0015] Preferably, the conveying pipe is rotatably connected to the steam box, and a rotating mechanism for driving the conveying pipe to rotate is provided inside the shell.

[0016] By adopting the above technical solution, when using a steam box to deacidify and deodorize vegetable oil, the conveying pipe is rotated by a rotating mechanism, and the extension pipe rotates accordingly. The rotation of the extension pipe has a stirring effect on the vegetable oil, and at the same time changes the steam injection angle, further improving the fusion effect of steam and vegetable oil.

[0017] Preferably, the conveying pipe is vertically arranged, with a bearing 1 connected between its bottom and the steam box, and a rotating rod coaxially connected to its top, with a bearing 2 connected between the rotating rod and the steam box.

[0018] By adopting the above technical solution, the conveying pipe and the rotating rod are connected to the steam box through bearing one and bearing two, respectively, making the rotation of the conveying pipe smoother.

[0019] Preferably, the rotating mechanism includes a pressure relief pipe connected to the distillation tank. The pressure relief pipe is coaxially arranged with the rotating rod near the steam tank. A pressure relief piston is slidably connected in the pressure relief pipe. A cylindrical connecting rod is connected to the bottom of the pressure relief piston. A circular groove for the connecting rod to be inserted is provided at the top of the rotating rod. A tortuous groove is provided along the side wall of the circular groove. A transmission block is connected to the bottom side of the connecting rod. When the transmission block is inserted into the tortuous groove, it drives the rotating rod to rotate when the transmission block reciprocates in a straight line. A connecting block is provided at the bottom of the pressure relief pipe. A spring is provided between the connecting block and the pressure relief piston. The spring is sleeved on the connecting rod. A pressure relief hole is opened on the body of the pressure relief pipe located on the side of the pressure relief piston. When the pressure relief piston moves to the bottom, the pressure relief hole communicates with the distillation tank, and the steam in the pressure relief pipe is discharged from the pressure relief hole.

[0020] By adopting the above technical solution, the steam generated in the distillation tank can be used to drive the rotating rod and the conveying pipe to rotate. Specifically, the gas pressure in the distillation tank is transmitted to the pressure relief pipe. The pressure relief piston moves downward under the pressure, driving the connecting rod to move downward and causing the transmission block to move. When the pressure relief piston moves below the pressure relief hole, the steam in the pressure relief pipe is discharged through the pressure relief hole, the gas pressure in the pressure relief pipe decreases, and the pressure relief piston moves upward under the action of the spring. The above process is repeated, causing the pressure relief piston to drive the transmission block to reciprocate in a straight line. During the movement, the transmission block abuts against the edge of the bend groove and slides in the bend groove, thereby driving the circular groove to rotate, causing the rotating rod to drive the conveying pipe to rotate, and the extension pipe to rotate at the same time.

[0021] As a preferred option, it also includes:

[0022] A pressure sensor, installed inside the distillation chamber, is used to detect the gas pressure inside the distillation chamber;

[0023] An electric valve is located at the end of the pressure relief pipe near the distillation tank;

[0024] The controller is connected to the pressure sensor and the electric valve respectively. When the pressure sensor detects that the gas pressure in the distillation tank is higher than the preset value one, the controller controls the electric valve to open. When the pressure sensor detects that the gas pressure in the distillation tank is lower than the preset value two, the controller controls the electric valve to close.

[0025] By adopting the above technical solution, when the pressure sensor detects that the gas pressure in the distillation tank is higher than the preset value one, the controller controls the electric valve to open, the pressure in the pressure relief pipe increases, pushing the pressure relief piston to compress the spring and move downward. After the pressure relief is completed, the spring pushes the pressure relief piston upward and resets. When the pressure sensor detects that the gas pressure in the distillation tank is lower than the preset value two, the controller controls the electric valve to close.

[0026] Preferably, a collection box is fitted on the side of the pressure relief pipe, the pressure relief hole is located in the collection box, and the collection box is connected to the condenser pipe.

[0027] By adopting the above technical solution, the steam discharged from the pressure relief hole is collected by the collection box and transported to the condenser for condensation.

[0028] Preferably, the condenser tube is spiral-shaped.

[0029] By adopting the above technical solution, the steam is effectively and fully condensed, and the condensed steam flows along the condenser to the condenser box.

[0030] In summary, the present invention has the following beneficial effects:

[0031] 1. This invention achieves better deacidification and deodorization effects by using distillation evaporation and steam injection to pre-treat and secondary treat vegetable oils, respectively;

[0032] 2. By using an evaporation unit to evaporate the residual moisture in the vegetable oil, the resulting product quality is better;

[0033] 3. Stirring the vegetable oil while using steam injection and changing the steam injection angle improves the blending effect between steam and vegetable oil;

[0034] 4. Utilizing the steam generated during distillation as the power source for stirring vegetable oil makes full use of energy and is more energy-efficient and environmentally friendly. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the device in the embodiment;

[0036] Figure 2 yes Figure 1 Enlarged diagram of section A in the middle;

[0037] Figure 3 yes Figure 1 Enlarged diagram of section B;

[0038] Figure 4 This is a schematic diagram of the tortuous groove structure shown after the inner wall of the circular groove is unfolded in the embodiment.

[0039] In the diagram: 1. Shell; 2. Distillation tank; 21. Distilled water pipe; 22. Feed pipe; 3. Steam tank; 31. Feed pipe one; 32. Steam pipe; 33. Conveying pipe; 34. Extension pipe; 35. Jet nozzle; 36. Bearing one; 37. Rotating rod; 38. Bearing two; 4. Evaporator; 41. Feed pipe two; 42. Discharge pipe; 5. Condenser; 51. Condenser; 6. Pressure relief pipe; 61. Pressure relief piston; 62. Connecting rod; 63. Circular groove; 64. Zigzag groove; 65. Transmission block; 66. Connecting block; 67. Spring; 68. Pressure relief hole; 7. Pressure sensor; 71. Electric valve; 8. Collection box. Detailed Implementation

[0040] The present invention will be further described in detail below with reference to the accompanying drawings.

[0041] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0042] Example:

[0043] A special equipment for deacidifying and deodorizing vegetable oil, such as Figure 1 As shown, it includes a housing 1, in which a distillation unit, a steam unit, an evaporation unit, and a condensation unit are installed.

[0044] The distillation unit includes a distillation chamber 2 installed inside the upper part of the housing 1. A feed pipe 22 and a distilled water pipe 21 are respectively connected to the upper and lower sides of the distillation chamber 2. Both the feed pipe 22 and the distilled water pipe 21 extend to the outside of the housing 1. The feed pipe 22 is used to add the vegetable oil to be deacidified and deodorized, and the distilled water pipe 21 is used to add distilled water.

[0045] The steam unit includes a steam tank 3 installed below the distillation tank 2. A feed pipe 31 is connected between the bottom of the distillation tank 2 and the top of the steam tank 3. A steam pipe 32 is connected to the bottom of the steam tank 3, and the steam pipe 32 extends horizontally to the outside of the housing 1.

[0046] The evaporation unit includes an evaporation chamber 4 installed at the bottom of the steam chamber 3. A feed pipe 41 is connected between the bottom of the steam chamber 3 and the top of the evaporation chamber 4. A discharge pipe 42 is connected to the side of the evaporation chamber 4 and extends to the outside of the housing 1.

[0047] The condensing unit is located at the bottom of the distillation tank 2 and on the side of the steam tank 3. The condensing unit includes a spiral condenser tube 5 and a condenser box 51 installed on the lower part of the outer shell 1. The upper end of the condenser tube 5 is connected to the distillation tank 2, the steam tank 3, and the evaporation tank 4, and the lower end extends to the outside of the shell 1 and is connected to the condenser box 51.

[0048] The distillation tank 2, steam tank 3, and evaporation tank 4 mentioned above are all equipped with heating plates for heating materials. The heating plates are installed at the bottom and sides of each tank.

[0049] like Figure 1 and Figure 2 As shown, a conveying pipe 33 connected to a steam pipe 32 is vertically installed in the steam box 3. Multiple extension pipes 34 are connected circumferentially to the side of the conveying pipe 33, and the extension pipes 34 communicate with the conveying pipe 33. Each extension pipe 34 has several jet holes 35 on its side. The bottom of the conveying pipe 33 is connected to the steam box 3 via a bearing 36. A rotating rod 37 is coaxially connected to the top of the conveying pipe, and the rotating rod 37 is connected to the steam box 3 via a bearing 38. Both bearings 36 and 38 are sealed bearings.

[0050] like Figure 1 and Figure 3 As shown, the conveying pipe 33 is rotatably connected to the steam box 3, and a rotating mechanism for driving the conveying pipe 33 to rotate is provided inside the housing 1. The rotating mechanism includes a pressure relief pipe 6 connected to the distillation tank 2. The pressure relief pipe 6 is coaxially arranged with the rotating rod 37 near the steam box 3. A pressure relief piston 61 is slidably connected in the pressure relief pipe 6. A cylindrical connecting rod 62 is connected to the bottom of the pressure relief piston 61. A circular groove 63 is provided at the top of the rotating rod 37 for the connecting rod 62 to be inserted. A tortuous groove 64 is formed along the side wall of the circular groove 63. A transmission block 65 is connected to the side of the bottom end of the connecting rod 62, and the transmission block 65 is inserted into the tortuous groove 64. The shape of the tortuous groove 64 is as follows. Figure 4 As shown, the two turning angles at each turning angle are misaligned, meaning they are not on the same vertical straight line. This arrangement ensures that when the transmission block 65 slides in the bend groove 64, the side wall of the bend groove 64 guides the transmission block 65, allowing it to move only to the right and preventing it from turning back. When the transmission block 65 reciprocates along a straight line, it drives the rotating rod 37 to rotate. A connecting block 66 is provided at the bottom of the pressure relief pipe 6. A spring 67 is provided between the connecting block 66 and the pressure relief piston 61. The spring 67 is sleeved on the connecting rod 62, and its two ends are connected to the connecting block 66 and the pressure relief piston 61, respectively. A pressure relief hole 68 is provided on the body of the pressure relief pipe 6 located on the side of the pressure relief piston 61. When the pressure relief piston 61 moves to the lower position, the pressure relief hole 68 communicates with the distillation tank 2, and the steam in the pressure relief pipe 6 is discharged from the pressure relief hole 68. A collection box 8 is fitted on the side of the pressure relief pipe 6, and a pressure relief hole 68 is located in the collection box 8. The collection box 8 is connected to the condenser pipe 5.

[0051] A pressure sensor 7 is installed inside the distillation tank 2 to detect the gas pressure inside the distillation tank 2; an electric valve 71 is installed at the end of the pressure relief pipe 6 near the distillation tank 2. In this embodiment, a controller is also provided, which is connected to both the pressure sensor 7 and the electric valve 71. When the pressure sensor 7 detects that the gas pressure in the distillation tank 2 is higher than a preset value one, the controller controls the electric valve 71 to open; when the pressure sensor 7 detects that the gas pressure in the distillation tank 2 is lower than a preset value two, the controller controls the electric valve 71 to close. In this embodiment, value one is a1, value two is a2, and the pressure value that can push the pressure relief piston 61 downwards and expose the pressure relief hole 68 is b, where a1 > b > a2.

[0052] How to use:

[0053] When deacidifying and deodorizing vegetable oil, the vegetable oil is first pretreated by a distillation unit. Specifically, distilled water and vegetable oil are added to the distillation tank 2 through the distillation water pipe 21 and the feed pipe 22, respectively. Then, the mixture is heated. The distilled water generates steam, which carries the free fatty acids in the edible vegetable oil to the pressure relief pipe 6 and then into the condenser pipe 5.

[0054] The vegetable oil is then subjected to a secondary treatment using a steam unit. Specifically, the vegetable oil in distillation tank 2 is transferred to steam tank 3 via feed pipe 31. At this point, distilled water and the vegetable oil to be treated are added again to the empty distillation tank 2. Steam is then introduced into steam tank 3 through steam pipe 32. After the steam mixes with the vegetable oil, it carries the free fatty acids in the vegetable oil into condenser 5.

[0055] In the aforementioned process of deacidification and deodorization using the steam unit, when the pressure sensor 7 detects that the gas pressure in the distillation tank 2 is greater than the value a1, the controller controls the electric valve 71 to open, and the pressure in the pressure relief pipe 6 is greater than b. This pressure pushes the pressure relief piston 61 to compress the spring 67 and move it downwards. The downward movement of the pressure relief piston 61 exposes the pressure relief hole 68, allowing the steam in the pressure relief pipe 6 to enter the collection box 8 through the pressure relief hole 68, and then enter the condenser pipe 5. After the pressure relief is completed, the spring 67 pushes the pressure relief piston 61 upwards and returns it to its original position. The pressure sensor 7 detects that the gas pressure in the distillation tank 2 is lower than the value a2, and the controller controls the electric valve 71 to close, thereby realizing the reciprocating motion of the pressure relief piston 61. The reciprocating motion of the pressure relief piston 61 drives the transmission block 65 to reciprocate. During the movement, the transmission block 65 abuts against the edge of the tortuous groove 64 and slides in the tortuous groove 64, thereby driving the circular groove 63 to rotate, causing the rotating rod 37 to drive the conveying pipe 33 to rotate. The extension tube 34 rotates simultaneously to stir the vegetable oil in the steam box 3 and change the angle of the steam injection.

[0056] The steam is condensed by the condenser tube 5 and then enters the condenser box 51 for recovery.

[0057] The evaporation unit is used to remove moisture from vegetable oil. After being deacidified and deodorized by steam box 3, the vegetable oil enters evaporation box 4 through conveyor pipe 41. The vegetable oil is heated and evaporated in evaporation box 4 to remove residual moisture. The vegetable oil after evaporation and dehydration is discharged through discharge pipe 42.

Claims

1. A special device for deacidifying and deodorizing vegetable oil, comprising a shell (1), characterized in that, Also includes: The distillation unit includes a distillation tank (2), and a distillation water pipe (21) and a feed pipe (22) are connected to its body; The steam unit includes a steam box (3), which is connected to the distillation unit by a feed pipe (31), and the steam box (3) is connected to a steam pipe (32); The evaporation unit includes an evaporation box (4), which is connected to the steam unit by a feed pipe (41), and the evaporation box (4) is connected to a discharge pipe (42); The condensation unit includes a condenser tube (5), one end of which is connected to the distillation tank (2), the steam tank (3), and the evaporation tank (4), and the other end is connected to the condenser (51); The distillation tank (2), steam tank (3), and evaporation tank (4) are all equipped with heating plates for heating the materials; The steam box (3) is provided with a conveying pipe (33) connected to the steam pipe (32). An extension pipe (34) is connected to the side of the conveying pipe (33). The extension pipe (34) is connected to the conveying pipe (33). An air jet hole (35) is opened on the side of the extension pipe (34). The conveying pipe (33) is rotatably connected to the steam box (3), and a rotating mechanism for driving the conveying pipe (33) to rotate is provided inside the shell (1); The conveying pipe (33) is set vertically, and a bearing (36) is connected between its bottom and the steam box (3), and a rotating rod (37) is coaxially connected to its top. A bearing (38) is connected between the rotating rod (37) and the steam box (3). The rotating mechanism includes a pressure relief pipe (6) connected to the distillation tank (2). The pressure relief pipe (6) is coaxially arranged with the rotating rod (37) near the steam tank (3). A pressure relief piston (61) is slidably connected in the pressure relief pipe (6). A cylindrical connecting rod (62) is connected to the bottom of the pressure relief piston (61). A circular groove (63) for the connecting rod (62) to be inserted is provided at the top of the rotating rod (37). A tortuous groove (64) is provided along the side wall of the circular groove (63). A transmission block (65) is connected to the side of the bottom end of the connecting rod (62). The transmission block (65) is inserted into the tortuous groove (64). In 64), when the transmission block (65) reciprocates in a straight line, it drives the rotating rod (37) to rotate. A connecting block (66) is provided at the bottom end of the pressure relief pipe (6). A spring (67) is provided between the connecting block (66) and the pressure relief piston (61). The spring (67) is sleeved on the connecting rod (62). A pressure relief hole (68) is provided on the pipe body of the pressure relief pipe (6) located on the side of the pressure relief piston (61). When the pressure relief piston (61) moves to the bottom, the pressure relief hole (68) is connected to the distillation tank (2). The steam in the pressure relief pipe (6) is discharged from the pressure relief hole (68).

2. The special equipment for deacidification and deodorization of vegetable oil according to claim 1, characterized in that, Also includes: A pressure sensor (7) is installed inside the distillation tank (2) to detect the gas pressure inside the distillation tank (2); An electric valve (71) is installed at the end of the pressure relief pipe (6) near the distillation tank (2); The controller is connected to the pressure sensor (7) and the electric valve (71) respectively. When the pressure sensor (7) detects that the gas pressure in the distillation tank (2) is higher than the preset value one, the controller controls the electric valve (71) to open. When the pressure sensor (7) detects that the gas pressure in the distillation tank (2) is lower than the preset value two, the controller controls the electric valve (71) to close.

3. The special equipment for deacidification and deodorization of vegetable oil according to claim 2, characterized in that, A collection box (8) is fitted on the side of the pressure relief pipe (6), and the pressure relief hole (68) is located in the collection box (8). The collection box (8) is connected to the condenser pipe (5).

4. The special equipment for deacidification and deodorization of vegetable oil according to claim 1, characterized in that, The condenser tube (5) is spiral-shaped.

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