Oleic acid freezing crystallization device

Abstract

The utility model relates to the technical field of oleic acid crystallization, and particularly discloses an oleic acid freezing crystallization device which comprises a crystallization kettle, an interlayer and a stirring assembly, the interlayer is arranged on the inner wall of the crystallization kettle, the temperature of oleic acid is reduced by adding a refrigerant into the interlayer, the oleic acid can be stably crystallized, and the stirring assembly is directly driven by a motor. The stirring blades are arranged in the crystallization kettle to stir oleic acid which is being crystallized, so that it is guaranteed that the oleic acid in the crystallization kettle is in a moving state and can better exchange heat with a refrigerant, normal crystallization of the oleic acid by the crystallization kettle is guaranteed by arranging the partition layer, and the oleic acid in the crystallization kettle is stirred by the stirring blades to be heated uniformly while the temperature of the oleic acid in the crystallization kettle is increased. And a containing groove is formed inside and is matched with the second liquid conveying pipe and the third liquid conveying pipe to add a refrigerant, oleic acid is further frozen, and the freezing crystallization speed of the oleic acid is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of oleic acid crystallization, in particular to an oleic acid freezing crystallization device. Background Art

[0002] Oleic acid freeze crystallization is a method for separating and purifying oleic acid. In particular, when processing mixed fatty acids, freeze crystallization can effectively separate saturated fatty acids from unsaturated fatty acids. A crystallization kettle is often used, and a jacket is provided inside the crystallization kettle to control the temperature of the internal oleic acid by using chilled water or heating medium.

[0003] When the existing crystallization kettle is subjected to low-temperature freezing, the oleic acid inside is not uniformly heated. The part close to the inner wall of the crystallization kettle is significantly affected by the low temperature, and crystals will form first. These crystals will adhere to the inner surface of the crystallization kettle, thereby affecting the crystallization of the remaining oleic acid, resulting in slower crystallization and affecting the crystallization efficiency.

[0004] To this end, we propose an oleic acid freezing crystallization device. Utility Model Content

[0005] The purpose of the utility model is to provide an oleic acid freezing crystallization device to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: an oleic acid freezing crystallization device, comprising a crystallization kettle,

[0007] An interlayer is provided on the inner wall of the crystallization kettle, and a refrigerant is added to the interlayer to lower the temperature of the oleic acid, thereby ensuring that the oleic acid can be stably crystallized;

[0008] The stirring component is directly driven by a motor to stir the oleic acid being crystallized, thereby ensuring that the oleic acid inside the crystallization kettle is in a moving state and can better exchange heat with the refrigerant.

[0009] Wherein, the stirring assembly includes a stirring rod, which is driven by a motor to rotate and connected to the inner surface of the crystallization kettle. The annular outer surface of the stirring rod is fixedly connected to a connecting rod, and the outer surface of one end of the connecting rod away from the stirring rod is fixedly connected to a scraping plate for scraping the inner wall of the crystallization kettle.

[0010] Among them, the annular outer surface of the stirring rod is rotatably connected to a connecting block 1 near the upper end through a bearing, and a accommodating cavity for accommodating refrigerant is provided inside the connecting block 1. The annular outer surface of the connecting block 1 is fixedly connected to an infusion pipe 3 for conveying refrigerant, and the infusion pipe 3 passes through the crystallization kettle. A accommodating groove for accommodating refrigerant is provided inside the stirring rod, and the annular outer surface of the stirring rod near the lower end is rotatably connected to a connecting block 2 through a bearing, and the connecting block 2 is a hollow structure design. The annular outer surface of the connecting block 2 is fixedly connected to an infusion pipe 2, and the infusion pipe 2 is extended to the outside of the reactor, and a flow hole is provided at the corresponding position of the stirring rod and the accommodating cavity.

[0011] Among them, the outer surface of the stirring rod near the lower end is provided with a hole for flowing refrigerant, the hole is connected to the receiving tank, the inner surface of the hole is connected to a connecting pipe, and the end of the connecting pipe away from the stirring rod is connected to an inclined stirring blade, the stirring blade is designed as a hollow structure, and its interior is connected to the connecting pipe.

[0012] Among them, the annular inner surface of the crystallization kettle is fixedly connected with baffle 1, the upper end of the baffle 1 is fixedly connected with baffle 2, the connecting pipe and the hole are rotatably connected through a bearing, and a spring is fixedly connected between the stirring blade and the stirring rod.

[0013] Wherein, one end of the stirring blade close to the stirring rod is fixedly connected to a guide rod, and a guide groove is provided at corresponding positions of the stirring rod and the guide rod, and the guide rod is located inside the guide groove.

[0014] Wherein, the annular outer surface of the crystallization kettle is fixedly connected with a liquid infusion pipe 1 for conveying refrigerant to the interior of the interlayer.

[0015] The utility model has at least the following beneficial effects:

[0016] The normal crystallization of oleic acid in the crystallization kettle is ensured by providing an interlayer, and the oleic acid in the crystallization kettle is stirred and heated uniformly by a stirring blade. A refrigerant is added into the crystallization kettle in cooperation with a receiving tank provided inside and a second and a third infusion tube to further freeze the oleic acid, thereby increasing the speed of oleic acid freezing crystallization and improving the crystallization efficiency. The scraping plate scrapes the annular inner surface of the crystallization kettle, and the baffles one and two cooperate to scrape the crystals on the surface of the stirring blade, thereby reducing the influence of crystals adhering to the surface of the crystallization kettle on other oleic acid crystals. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cutaway structure of the crystallization kettle of the utility model;

[0019] Figure 3This is a schematic structural diagram of the stirring assembly of the utility model;

[0020] Figure 4 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0021] Figure 5 This is a schematic diagram of the structure of the stirring blade and connecting pipe of the utility model;

[0022] Figure 6 This is a structural diagram of the guide rod and guide groove of the utility model.

[0023] In the figure: 1. crystallization kettle; 10. partition; 11. infusion tube 1; 2. stirring assembly; 20. stirring rod; 21. scraper plate; 22. connecting rod; 23. stirring blade; 24. infusion tube 2; 25. infusion tube 3; 26. connecting block 1; 27. accommodating chamber; 28. accommodating groove; 29. flow hole; 30. connecting block 2; 31. baffle 1; 32. baffle 2; 33. spring; 34. connecting tube; 35. guide groove; 36. guide rod; 37. hole. DETAILED DESCRIPTION

[0024] The following will be combined with 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-6 The utility model provides a technical solution: an oleic acid freezing crystallization device, comprising a crystallization kettle 1,

[0026] The interlayer 10 is provided on the inner wall of the crystallization kettle 1. A refrigerant is added to the interlayer 10 to lower the temperature of the oleic acid, thereby ensuring that the oleic acid can be stably crystallized.

[0027] The stirring component 2 is directly driven by a motor to stir the oleic acid being crystallized, thereby ensuring that the oleic acid inside the crystallization kettle 1 is in a moving state and can better exchange heat with the refrigerant.

[0028] The stirring assembly 2 includes a stirring rod 20, which is driven by a motor to rotate and is connected to the inner surface of the crystallization kettle 1. The annular outer surface of the stirring rod 20 is fixedly connected to a connecting rod 22, and the outer surface of the connecting rod 22 at one end away from the stirring rod 20 is fixedly connected to a scraping plate 21 for scraping the inner wall of the crystallization kettle 1. The refrigerant temperature inside the interlayer 10 is relatively low, which will cause the inner wall of the crystallization kettle 1 to crystallize rapidly and stick to the inner wall of the crystallization kettle 1, affecting the freezing effect of oleic acid. When the stirring assembly 2 is stirring, the scraping plate 21 rotates synchronously with the stirring rod 20 to scrape the inner wall of the crystallization kettle 1, so that the sticky crystals fall off the inner wall of the crystallization kettle 1, thereby maintaining efficient heat exchange between the refrigerant and oleic acid and improving the crystallization efficiency of oleic acid.

[0029] The annular outer surface of the stirring rod 20 is rotatably connected to a connecting block 1 26 near the upper end through a bearing. A accommodating chamber 27 for accommodating refrigerant is provided inside the connecting block 1 26. The annular outer surface of the connecting block 1 26 is fixedly connected to an infusion pipe 3 25 for conveying refrigerant. The infusion pipe 3 25 passes through the crystallization kettle 1. A accommodating groove 28 for accommodating refrigerant is provided inside the stirring rod 20. The annular outer surface of the stirring rod 20 near the lower end is rotatably connected to a connecting block 2 30 through a bearing. The connecting block 2 30 is a hollow structure design. The annular outer surface of the connecting block 2 30 is fixedly connected to an infusion pipe 2 24. The infusion pipe 24 extends to the outside of the reactor. A circulation hole 29 is provided at the corresponding position of the stirring rod 20 and the accommodating chamber 27. Another channel for the refrigerant is composed of the infusion tube three 25, the infusion tube two 24 and the accommodating tank 28. The refrigerant is injected into the accommodating tank 28 from the infusion tube two 24 and then discharged from the infusion tube three 25 to complete a cycle, which can increase the heat exchange area between the refrigerant and oleic acid. The inner wall of the crystallization kettle 1 and the stirring rod 20 can both perform heat exchange and freezing on the oleic acid, thereby increasing the crystallization efficiency of oleic acid. The connecting block one 26 and the connecting block two 30 are both rotatably connected to the stirring rod 20. The refrigerant enters the accommodating tank 28 through the connecting block two 30, then enters the accommodating chamber 27 through the circulation hole 29, and is finally discharged through the infusion tube three 25.

[0030] The outer surface of the stirring rod 20 near the lower end is provided with a hole 37 for flowing refrigerant, and the hole 37 is connected to the receiving tank 28. The inner surface of the hole 37 is connected to a connecting pipe 34. The connecting pipe 34 is fixedly connected to an inclined stirring blade 23 at one end away from the stirring rod 20. The stirring blade 23 is designed as a hollow structure, and its interior is connected to the connecting pipe 34. The stirring efficiency is increased by the stirring blade 23. At the same time, the stirring blade 23 is hollow in design and can also store refrigerant inside, further increasing the heat exchange area between the refrigerant and oleic acid. The refrigerant in the receiving tank 28 enters the connecting pipe 34 through the hole 37 and then enters the interior of the stirring blade 23.

[0031] The annular inner surface of the crystallization kettle 1 is fixedly connected with a baffle 1 31, and the upper end of the baffle 1 31 is fixedly connected with a baffle 2 32. The connecting pipe 34 is rotatably connected to the hole 37 through a bearing. A spring 33 is fixedly connected between the stirring blade 23 and the stirring rod 20. The area of the stirring blade 23 is large, and crystals will also precipitate on its surface during heat exchange, thereby reducing the heat exchange efficiency. The baffle 1 31 and the baffle can scrape the crystals attached to the surface of the stirring blade 23. The width of the baffle 1 31 is large. At baffle 2 32, when the outer surface of the lower end of the stirring blade 23 contacts baffle 1 31, the edge of the inclined stirring blade 23 is blocked by baffle 1 31 and rotates. At the same time, baffle 1 31 contacts the surface of the stirring blade 23 and removes crystals. After rotation, the stirring blade 23 is parallel to baffle 1 31. At this time, the upper end of the stirring blade 23 contacts baffle 2 32, and baffle 2 32 removes the crystals precipitated from the upper end of the stirring blade 23. In this process, the stirring blade 23 passes between baffle 1 31 and baffle 2 32.

[0032] The stirring blade 23 is fixedly connected to a guide rod 36 at one end close to the stirring rod 20. A guide groove 35 is provided at the corresponding position of the stirring rod 20 and the guide rod 36. The guide rod 36 is located inside the guide groove 35. When the stirring blade 23 rotates, the guide rod 36 will slide inside the guide groove 35. The guide groove 35 limits the maximum rotation angle of the stirring blade 23. The setting of the spring 33 facilitates the resetting of the stirring blade 23.

[0033] The annular outer surface of the crystallization kettle 1 is fixedly connected to a liquid infusion pipe 11 for conveying refrigerant to the interior of the interlayer 10. The liquid infusion pipe 11 conveys refrigerant to the interior of the interlayer 10 to freeze the oleic acid inside the crystallization kettle 1.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oleic acid freeze crystallization device, comprising a crystallization kettle (1), characterized in that: An interlayer (10) is provided on the inner wall of the crystallization kettle (1), and a refrigerant is added to the interlayer (10) to lower the temperature of the oleic acid, thereby ensuring that the oleic acid can be stably crystallized; A stirring assembly (2) is directly driven by a motor to stir the oleic acid being crystallized, thereby ensuring that the oleic acid inside the crystallization kettle (1) is in a moving state and can better exchange heat with the refrigerant; The stirring assembly (2) comprises a stirring rod (20), the stirring rod (20) being driven by a motor to rotate and connected to the inner surface of the crystallization kettle (1), the annular outer surface of the stirring rod (20) being fixedly connected to a connecting rod (22), and the outer surface of one end of the connecting rod (22) away from the stirring rod (20) being fixedly connected to a scraping plate (21) for scraping the inner wall of the crystallization kettle (1); The annular outer surface of the stirring rod (20) is rotatably connected to a connecting block (26) near the upper end through a bearing, and a accommodating cavity (27) for accommodating refrigerant is provided inside the connecting block (26). The annular outer surface of the connecting block (26) is fixedly connected to a liquid infusion pipe (25) for conveying refrigerant, and the liquid infusion pipe (25) passes through the crystallization kettle (1). A accommodating groove (28) for accommodating refrigerant is provided inside the stirring rod (20). The annular outer surface of the stirring rod (20) near the lower end is rotatably connected to a connecting block (30) through a bearing, and the connecting block (30) is designed as a hollow structure. The annular outer surface of the connecting block (30) is fixedly connected to a liquid infusion pipe (24), and the liquid infusion pipe (24) is extended to the outside of the reactor. A flow hole (29) is provided at the corresponding position of the stirring rod (20) and the accommodating cavity (27).

2. The oleic acid freeze crystallization device according to claim 1, wherein: The outer surface of the stirring rod (20) near the lower end is provided with a hole (37) for flowing refrigerant, and the hole (37) is connected to the receiving groove (28). The inner surface of the hole (37) is connected to a connecting pipe (34), and the end of the connecting pipe (34) away from the stirring rod (20) is connected to an inclined stirring blade (23), and the stirring blade (23) is designed as a hollow structure, and its interior is connected to the connecting pipe (34).

3. The oleic acid freeze crystallization device according to claim 2, wherein: The annular inner surface of the crystallization kettle (1) is fixedly connected to a baffle 1 (31), the upper end of the baffle 1 (31) is fixedly connected to a baffle 2 (32), the connecting pipe (34) and the hole (37) are rotatably connected via a bearing, and a spring (33) is fixedly connected between the stirring blade (23) and the stirring rod (20).

4. The oleic acid freeze crystallization device according to claim 3, characterized in that: One end of the stirring blade (23) close to the stirring rod (20) is fixedly connected to a guide rod (36); a guide groove (35) is provided at corresponding positions of the stirring rod (20) and the guide rod (36); and the guide rod (36) is located inside the guide groove (35).

5. The oleic acid freeze crystallization device according to claim 4, characterized in that: The annular outer surface of the crystallization kettle (1) is fixedly connected to a liquid infusion pipe (11) for conveying refrigerant to the interior of the interlayer (10).

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