Distillation device provided with preheating structure and used for refining glycerol triacetate

Abstract

The utility model discloses a distillation device for refining glycerol triacetate with a preheating structure, which relates to the field of glycerol triacetate processing and comprises a storage preheating barrel, a conveying pipe is mounted above the storage preheating barrel, a mixing and stirring barrel is mounted at the other end of the conveying pipe, and a fixed embedding plate is mounted above the mixing and stirring barrel. According to the distillation device provided with the preheating structure and used for refining glycerol triacetate, when stirring and mixing operation needs to be conducted on the interior of a mixing and stirring barrel, a driving motor is started firstly to drive a semicircular gear to rotate, and the semicircular gear rotates to drive a fixed transmission rod to slide downwards through a transmission rack; and moreover, an ascending stirring plate fixedly mounted with a fixed transmission rod can stir the glycerol triacetate in the movement process, and the glycerol triacetate firstly enters the storage preheating barrel to be preheated and then enters the mixing and stirring barrel to work, so that uniform mixing of the glycerol triacetate raw materials during processing is ensured.

Description

Technical Field

[0001] This utility model relates to the field of triacetin processing technology, specifically a distillation apparatus for refining triacetin with a preheating structure. Background Technology

[0002] Triacetin is a colorless, oily liquid with a faint fruity and sweet taste. It has a bitter taste at low concentrations and can be used in daily chemical fragrance formulations, mainly as a fixative. In existing technologies, triacetin is mostly produced by mixing and processing multiple materials. Its production process can include crushing and mixing processes. The crushing process can grind and crush the solid materials in the raw materials. After crushing, the mixing reaction can improve the preparation efficiency.

[0003] The refining distillation process requires a large amount of heat energy, resulting in high energy consumption and increased production costs. The operating parameters of the distillation equipment, such as temperature and pressure, need to be precisely controlled, making the operation difficult and requiring high technical skills from the operators.

[0004] To overcome the above-mentioned defects, existing technology (Chinese patent publication number: CN118206448A, application date: 2024-03-29) discloses a novel method for preparing a composite triacetylglycerol for cigarettes, comprising the following steps: mixing glycerol and acetic acid, adding a catalyst and a dehydrating agent, heating for a reflux reaction, removing the water generated in the reaction through a water separator system, and refluxing acetic acid back into the reaction system; after the reflux reaction is completed, removing the acetic acid from the reaction system, adding anhydride for end-capping, and deacidifying after the reaction, with the molar ratio of anhydride to glycerol being less than or equal to 0.6:1; decolorizing the deacidified product and filtering to obtain a composite triacetylglycerol product with a hydroxyl value greater than or equal to 4 mgKOH / g. This invention also relates to a composite triacetylglycerol and its application in the preparation of cellulose acetate filters for cigarettes. This invention controls the hydroxyl value of the composite triacetyl ester product by controlling the end-capped anhydride. When the hydroxyl value of the composite triacetyl ester product reaches a certain value, it can be used in the manufacture of cigarette filters to shorten the curing time and increase the hardness.

[0005] While the existing design can solve the above problems, it has insufficient stirring efficiency for the complex triacetin during distillation, which prevents the distillation ratio from reaching its maximum and reduces the distillation efficiency. Furthermore, the heating design for the complex triacetin during distillation is inadequate, making it difficult to achieve comprehensive heating over a wider area while stirring, which reduces the distillation effect and increases processing time. Summary of the Invention

[0006] The purpose of this invention is to provide a distillation apparatus for refining triacetin with a preheating structure, in order to solve the problems mentioned in the background art, such as insufficient stirring efficiency of complex triacetin during distillation, which prevents the distillation ratio from reaching its maximum and reduces the distillation efficiency, and the lack of heating design for complex triacetin during distillation, which makes it difficult to achieve comprehensive heating over a larger area when stirring the complex triacetin, thus reducing the distillation effect and increasing the processing time.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a distillation apparatus for refining triacetin with a preheating structure, comprising a storage preheating tank, a conveying pipe installed above the storage preheating tank, and a mixing and stirring tank installed at the other end of the conveying pipe, a fixed fitting plate installed above the mixing and stirring tank, and an engaging elastic mechanism for moving the rising stirring plate up and down installed above the fixed fitting plate, the engaging elastic mechanism comprising a drive motor, and a semi-circular gear installed at the output end of the drive motor, a fixed transmission rod installed inside the fixed fitting plate, and a transmission rack installed at the upper end of the fixed transmission rod, the transmission rack meshing with the semi-circular gear, and a reciprocating frame installed inside the fixed fitting plate, a limiting sliding frame installed above the mixing and stirring tank, and an elastic sliding mechanism for moving the heated distillation layer installed inside the limiting sliding frame.

[0008] Furthermore, the elastic sliding mechanism includes a fixed trigger rod, which is fixedly installed on the back of the transmission rack. A transmission fixed rod is installed inside the limiting sliding frame, and the upper end of the transmission fixed rod abuts against the lower surface of the fixed trigger rod.

[0009] Furthermore, a heating distillation layer is installed at the bottom of the transmission fixing rod, and a heat insulation sleeve is installed on the outer surface of the mixing and stirring tank. The heating distillation layer is installed in the interlayer between the mixing and stirring tank and the heat insulation sleeve, and the top end of the reset elastic rope is fixedly installed at the lower end of the mixing and stirring tank.

[0010] Furthermore, a rising return spring is installed on the outer surface of the fixed transmission rod, and the lower end of the rising return spring abuts against the upper end of the abutting return frame. A fixed sliding frame is installed on the lower surface of the fixed fitting plate, and a descending fixed plate is installed on the outer surface of the fixed transmission rod. Connecting sliding rods are installed on the left and right sides of the descending fixed plate, and the ends of the connecting sliding rods are slidably installed inside the fixed sliding frame.

[0011] Furthermore, an upward stirring plate is installed on the outer surface of the fixed transmission rod, and the upward stirring plate moves up and down inside the mixing and stirring barrel. Moreover, the semi-circular gear is designed to be semi-circular, and the outer surface of the semi-circular gear contacts the outer surface of the transmission rack to form a meshing structure.

[0012] Furthermore, the upper end of the fixed sliding frame contacts the inner surface of the connecting sliding rod to form a sliding structure, and the upper surface of the abutting reset frame contacts the bottom of the rising reset spring to form an elastic structure. Moreover, the fixed transmission rod is rotatably connected to the end of the connecting sliding rod through the two sides of the descending fixed plate to form a transmission structure.

[0013] Furthermore, the outer surface of the transmission fixing rod contacts the inner surface of the limiting sliding frame to form a sliding structure, and the mixing and stirring barrel is nested inside the heat insulation sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: When the distillation device for refining triacetin with a preheating structure needs to be stirred inside the mixing tank, the drive motor is first started to drive the semi-circular gear to rotate. The rotation of the semi-circular gear causes it to drive the fixed transmission rod to slide downward through the transmission rack. The rising stirring plate, which is fixedly installed with the fixed transmission rod, will stir the triacetin during the movement. The triacetin will first enter the storage preheating tank for preheating and then enter the mixing tank for processing, ensuring that the triacetin raw material is mixed evenly during processing.

[0015] Furthermore, as the transmission rack slides down, the fixed trigger rod moves accordingly and contacts the transmission fixed rod, pushing it downward. The transmission fixed rod moves synchronously along the limit sliding frame to drive the lower heating distillation layer, and the heating distillation layer extends and stretches the reset elastic rope repeatedly.

[0016] Furthermore, when the fixed transmission rod is driven to slide down, the external rising return spring will abut against the abutment return frame and retract. After the semi-circular gear disengages from the transmission rack, it will lift the semi-circular gear again, achieving a better mixing effect of triacetin. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the storage preheating tank of this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the heat insulation sleeve of this utility model.

[0019] Figure 3 This is a three-dimensional structural diagram of the rising stirring plate of this utility model.

[0020] Figure 4This is a three-dimensional structural diagram of the contact reset frame of this utility model.

[0021] Figure 5 This is a three-dimensional structural diagram of the transmission fixing rod of this utility model.

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the resetting elastic rope of this utility model.

[0023] In the diagram: 1. Storage preheating tank; 2. Conveying pipe; 3. Heat insulation sleeve; 4. Fixed fitting plate; 5. Drive motor; 6. Semi-circular gear; 7. Transmission rack; 8. Mixing and stirring tank; 9. Heating distillation layer; 10. Transmission fixing rod; 11. Limiting sliding frame; 12. Fixed trigger rod; 13. Reset elastic rope; 14. Fixed transmission rod; 15. Rising stirring plate; 16. Abutment reset frame; 17. Fixed sliding frame; 18. Connecting sliding rod; 19. Lowering fixing plate; 20. Rising reset spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figures 1-6 The present invention provides the following technical solution: a distillation apparatus for refining triacetin with a preheating structure, comprising a storage preheating tank 1, a conveying pipe 2 installed above the storage preheating tank 1, and a mixing and stirring tank 8 installed at the other end of the conveying pipe 2, a fixed fitting plate 4 installed above the mixing and stirring tank 8, and an engaging elastic mechanism for moving the rising stirring plate 15 up and down installed above the fixed fitting plate 4, the engaging elastic mechanism comprising a drive motor 5, and a semi-circular gear 6 installed at the output end of the drive motor 5, a fixed transmission rod 14 installed inside the fixed fitting plate 4, and a transmission rack 7 installed at the upper end of the fixed transmission rod 14, the transmission rack 7 meshing with the semi-circular gear 6, and an abutment reset frame 16 installed inside the fixed fitting plate 4, a limiting sliding frame 11 installed above the mixing and stirring tank 8, and an elastic sliding mechanism for moving the heated distillation layer 9 installed inside the limiting sliding frame 11.

[0026] like Figure 1 , Figure 3 , Figure 4The technical solution shown herein, in order to solve the problem of low processing and turning efficiency of triacetin during stirring and mixing, discloses the following: a rising return spring 20 is installed on the outer surface of the fixed transmission rod 14, and the lower end of the rising return spring 20 abuts against the upper end of the abutment return frame 16; a fixed sliding frame 17 is installed on the lower surface of the fixed fitting plate 4; a descending fixed plate 19 is installed on the outer surface of the fixed transmission rod 14; connecting sliding rods 18 are installed on the left and right sides of the descending fixed plate 19, and the ends of the connecting sliding rods 18 are slidably installed inside the fixed sliding frame 17; the fixed transmission rod 14 is then fixed. The outer surface of the rod 14 is equipped with a rising agitator plate 15, which moves up and down inside the mixing and agitating tank 8. The semi-circular gear 6 is semi-circular in design, and its outer surface contacts the outer surface of the transmission rack 7 to form a meshing structure. The upper end of the fixed sliding frame 17 contacts the inner surface of the connecting sliding rod 18 to form a sliding structure. The upper surface of the contact reset frame 16 contacts the bottom of the rising reset spring 20 to form an elastic structure. The fixed transmission rod 14 is rotatably connected to the end of the connecting sliding rod 18 through the two sides of the descending fixed plate 19 to form a transmission structure.

[0027] When it is necessary to mix and stir the triacetin raw material inside the mixing and stirring tank 8, the triacetin raw material that has been preheated in the storage and preheating tank 1 is transferred through the conveying pipe 2. After arriving inside the mixing and stirring tank 8, the drive motor 5, which is fixedly installed on the upper surface of the fixed interlocking plate 4, is started. The start of the drive motor 5 drives the semi-circular gear 6 to rotate continuously. During the rotation of the semi-circular gear 6, the transmission rack 7, which is in contact with each other on the side, is driven to generate a meshing motion. Driven by the meshing motion, the transmission rack 7 slides downward along the inside of the fixed interlocking plate 4. Since the fixed transmission rod 14 is fixedly installed at the lower end of the transmission rack 7, the fixed transmission rod 14 slides down synchronously. The outer surface of the fixed transmission rod 14 is nested with a rising return spring 20. The upper end of the rising return spring 20 is fixedly installed on the outer surface of the fixed transmission rod 14. Therefore, the rising return spring 20 and the fixed... The fixed transmission rod 14 moves synchronously, and during the downward movement of the rising return spring 20, the lower end abuts against the upper end of the abutment return frame 16 fixedly installed inside the fixed fitting plate 4, causing the rising return spring 20 to contract. As the fixed transmission rod 14 slides down, the fixed transmission rod 14 fixedly installed on the outer surface is driven to slide synchronously, and the movement of the fixed transmission rod 14 drives the connecting sliding rod 18 rotatably connected on both sides. Since the upper end of the connecting sliding rod 18 is slidably installed inside the fixed sliding frame 17 fixed on the lower surface of the fixed fitting plate 4, the connecting sliding rod 18 slides and extends. After the semi-circular gear 6 disengages from the transmission rack 7, the rising return spring 20 lifts the fixed transmission rod 14 to reset. The rising stirring plate 15 fixedly installed on the lower outer surface of the fixed transmission rod 14 moves up and down synchronously, causing the triacetin raw material inside the mixing and stirring tank 8 to continuously tumble up and down to obtain a better distillation effect.

[0028] like Figure 2 , Figure 5 , Figure 6 The technical solution shown herein, in order to solve the problem of uneven heating of triacetin during heating operation, discloses the following: an elastic sliding mechanism includes a fixed trigger rod 12, which is fixedly installed on the back of the transmission rack 7; a transmission fixed rod 10 is installed inside the limiting sliding frame 11, and the upper end of the transmission fixed rod 10 abuts against the lower surface of the fixed trigger rod 12; a heating distillation layer 9 is installed at the bottom of the transmission fixed rod 10; a heat insulation sleeve 3 is installed on the outer surface of the mixing and stirring tank 8; the heating distillation layer 9 is installed in the interlayer between the mixing and stirring tank 8 and the heat insulation sleeve 3; a reset elastic rope 13 is installed on the top of the heating distillation layer 9; the top end of the reset elastic rope 13 is fixedly installed at the lower end of the mixing and stirring tank 8; the outer surface of the transmission fixed rod 10 contacts the inner surface of the limiting sliding frame 11 to form a sliding structure; and the mixing and stirring tank 8 is nested inside the heat insulation sleeve 3.

[0029] When the transmission rack 7 is driven to slide downwards, the fixed trigger rod 12, which is fixedly installed on the back of the transmission rack 7, is driven to slide downwards synchronously and abuts against the upper end of the transmission fixed rod 10 in the sliding trajectory. Since the transmission fixed rod 10 is slidably installed inside the limiting sliding frame 11, and the limiting sliding frame 11 is fixedly installed on the top of the mixing and stirring tank 8, the transmission fixed rod 10 is driven to slide downwards inside the transmission fixed rod 10. The downward movement of the transmission fixed rod 10 causes the heating distillation layer 9, which is fixedly installed at the lower end of the transmission fixed rod 10, to move synchronously on the outer surface of the mixing and stirring tank 8. A heat-insulating sleeve 3 is nested inside the mixing tank 8, and the heating distillation layer 9 is driven to slide down through the gap between the mixing tank 8 and the heat-insulating sleeve 3. The heating distillation layer 9 moves in a ring shape outside the mixing tank 8, making the interior of the mixing tank 8 more evenly heated and achieving a better distillation effect. As the heating distillation layer 9 slides down, the reset elastic rope 13 fixedly installed at the upper end of the heating distillation layer 9 is driven to extend synchronously. When the transmission fixing rod 10 is not under force, the reset elastic rope 13 drives the heating distillation layer 9 to slide upward to complete the reset, achieving a circulating heating effect inside the mixing tank 8.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A distillation apparatus for refining triacetin with a preheating structure, comprising a storage preheating tank (1), a conveying pipe (2) installed above the storage preheating tank (1), and a mixing and stirring tank (8) installed at the other end of the conveying pipe (2). Its features are: A fixed fitting plate (4) is installed above the mixing and stirring tank (8), and an meshing elastic mechanism for moving the rising stirring plate (15) up and down is installed above the fixed fitting plate (4). The meshing elastic mechanism includes a drive motor (5), and a semi-circular gear (6) is installed at the output end of the drive motor (5). A fixed transmission rod (14) is installed inside the fixed fitting plate (4), and a transmission rack (7) is installed at the upper end of the fixed transmission rod (14). The transmission rack (7) meshes with the semi-circular gear (6), and an abutment reset frame (16) is installed inside the fixed fitting plate (4). A limit sliding frame (11) is installed above the mixing and stirring tank (8), and an elastic sliding mechanism for moving the heated distillation layer (9) is installed inside the limit sliding frame (11).

2. The distillation apparatus for refining triacetin with a preheating structure according to claim 1, characterized in that: The elastic sliding mechanism includes a fixed trigger rod (12), which is fixedly installed on the back of the transmission rack (7). The limiting sliding frame (11) has a transmission fixed rod (10) installed inside, and the upper end of the transmission fixed rod (10) abuts against the lower surface of the fixed trigger rod (12).

3. The distillation apparatus for refining triacetin with a preheating structure according to claim 2, characterized in that: The bottom of the transmission fixing rod (10) is equipped with a heating distillation layer (9), and the outer surface of the mixing and stirring tank (8) is equipped with a heat insulation sleeve (3). The heating distillation layer (9) is installed in the interlayer between the mixing and stirring tank (8) and the heat insulation sleeve (3), and the top of the heating distillation layer (9) is equipped with a reset elastic rope (13). The top end of the reset elastic rope (13) is fixedly installed at the lower end of the mixing and stirring tank (8).

4. The distillation apparatus for refining triacetin with a preheating structure according to claim 1, characterized in that: A rising return spring (20) is installed on the outer surface of the fixed transmission rod (14), and the lower end of the rising return spring (20) abuts against the upper end of the abutting return frame (16). A fixed sliding frame (17) is installed on the lower surface of the fixed fitting plate (4), and a descending fixed plate (19) is installed on the outer surface of the fixed transmission rod (14). Connecting sliding rods (18) are installed on the left and right sides of the descending fixed plate (19), and the end of the connecting sliding rod (18) is slidably installed inside the fixed sliding frame (17).

5. A distillation apparatus for refining triacetin with a preheating structure according to claim 1, characterized in that: The outer surface of the fixed transmission rod (14) is equipped with a rising stirring plate (15), and the rising stirring plate (15) moves up and down inside the mixing and stirring tank (8). The semi-circular gear (6) is designed to be semi-circular, and the outer surface of the semi-circular gear (6) contacts the outer surface of the transmission rack (7) to form a meshing structure.

6. The distillation apparatus for refining triacetin with a preheating structure according to claim 3, characterized in that: The outer surface of the transmission fixing rod (10) contacts the inner surface of the limiting sliding frame (11) to form a sliding structure, and the mixing and stirring barrel (8) is nested inside the heat insulation sleeve (3).

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