Extraction device for ethylene glycol

Abstract

The ethylene glycol extraction device comprises a base, an extraction tank, a first driving mechanism, a second driving mechanism and a third driving mechanism, the extraction tank comprises a tank body, a top cover and a stirring mechanism, the first driving mechanism comprises a first motor, a transmission shaft and a rotary limiting frame, and the second driving mechanism comprises a second motor installed on the top cover. The third driving mechanism comprises at least one linear module, the stirring mechanism is driven by the second motor to stir the raw materials in the tank body, and the tank body can be driven by the first motor to swing back and forth, so that the raw materials in the tank body are fully mixed while being stirred; meanwhile, the top cover of the extraction tank is driven by the linear module to do linear reciprocating motion in the axial direction of the tank body of the extraction tank, so that the tank body is convenient and rapid to open and close, the problem that raw materials in the tank body are not sufficiently stirred is solved, the problem that the top cover is time-consuming and labor-consuming to disassemble and assemble is solved, and the extraction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to ethylene glycol production, in particular to an ethylene glycol extraction device. Background Art

[0002] Extraction, also known as solvent extraction or liquid-liquid extraction, is a unit operation that uses the different solubilities of components in the system in the solvent to separate the mixture. That is, it is a method that uses the difference in solubility or distribution coefficient of a substance in two immiscible (or slightly soluble) solvents to transfer the solute from one solvent to another. It is widely used in the chemical, metallurgical, food and other industries, and is commonly used in the petroleum refining industry. The operating steps for extracting and separating substances are: after adding the solvent used to extract (extract) the solute into the separatory funnel containing the solution, immediately shake it fully so that the solute is fully transferred to the added solvent, and then let the separatory funnel stand. After the liquid is separated into layers, separate the liquids. If you want to obtain the solute, you can distill the solvent to obtain a pure solute.

[0003] Ethylene glycol has a wide range of uses. It is used to make polyester, terylene, polyester resin, desiccant, plasticizer, surfactant, synthetic fiber, cosmetics and explosives; it is used as a solvent for dyes, inks, etc., to prepare engine antifreeze, gas dehydrating agent, to make resins, and can also be used as a wetting agent for cellophane, fiber, leather, and adhesives; it can also produce synthetic resin PET, fiber-grade PET, i.e. polyester fiber, and bottle-grade PET for making mineral water bottles, etc.; it can also produce alkyd resin, glyoxal, etc., and is also used as an antifreeze. In addition to being used as an antifreeze for automobiles, it is also used for the transportation of industrial cold, generally referred to as a refrigerant, and can also be used as a condensing agent like water. At the same time, alcohol is miscible with water / ethanol / acetone / acetic acid glycerol pyridine, etc., slightly soluble in ether, insoluble in petroleum hydrocarbons and oils, and can dissolve inorganic substances such as calcium chloride / zinc chloride / sodium chloride / potassium carbonate / potassium chloride / potassium iodide / potassium hydroxide. By utilizing the solubility characteristics of ethylene glycol, ethylene glycol can be used as an extractant, and ethylene glycol can also be extracted from wastewater and waste liquid.

[0004] However, the current extraction device does not mix the raw materials containing ethylene glycol sufficiently, resulting in low extraction efficiency and prolonged extraction cycle. In addition, the top cover of the extraction tank is mostly fixed with bolts and other structures, which requires a large amount of disassembly and installation work during subsequent maintenance and cleaning, which is time-consuming and labor-intensive. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides an ethylene glycol extraction device, which realizes the opening and closing of the top cover of the extraction tank and the overall swing of the tank body of the extraction tank by setting a mounting mechanism, so as to solve the problems of insufficient stirring and mixing of raw materials inside the extraction device and time-consuming and laborious disassembly and assembly of the top cover.

[0006] The utility model provides an ethylene glycol extraction device, comprising:

[0007] A base, on which a mounting frame is mounted;

[0008] The extraction tank comprises a tank body, a top cover and a stirring mechanism, wherein the top cover is arranged on the top of the tank body and the stirring mechanism is arranged inside the tank body;

[0009] A first driving mechanism, the first driving mechanism is mounted on the mounting frame, the first driving mechanism comprises a first motor, a transmission shaft and a rotation limit frame, one end of the transmission shaft is connected to the rotation limit frame, and the other end is connected to the motor shaft of the first motor, and the rotation limit frame is sleeved and fixed on the outer wall of the tank body;

[0010] a second driving mechanism, the second driving mechanism comprising a second motor mounted on the top cover, the second motor being connected to the stirring mechanism; and

[0011] The third driving mechanism includes at least one linear module, which is mounted on a rotating limit frame and has a length direction parallel to the axial direction of the tank body of the extraction tank. The linear module includes a fixed portion connected to the rotating limit frame and a movable portion connected to the top cover of the extraction tank.

[0012] In one embodiment of the utility model, the fixed part of the linear module is a linear slide rail, and the movable part of the linear module is a pair of driving arms. The pair of driving arms are arranged on both sides of the linear slide rail and can slide along the linear slide rail to realize the opening and closing of the tank body.

[0013] In one embodiment of the utility model, the rotation limit frame of the first driving mechanism includes a fixed collar, which is coaxially fixedly sleeved in the middle part of the tank body of the extraction tank; the middle part of the linear slide rail is connected to the outer circumference of the fixed collar, the first ends of a pair of driving arms are connected to the outer circumference of the top cover, and the second ends of the pair of driving arms opposite to the first ends are slidably fitted on the linear slide rail through a slider.

[0014] In an embodiment of the present invention, the first end of the transmission shaft is connected to the outer circumference of the fixing collar, and the transmission shaft is arranged on a radial extension line of the fixing collar.

[0015] In one embodiment of the utility model, the second end of the transmission shaft opposite to the first end is inserted on the mounting frame through a bearing, the first motor is installed on the mounting frame, and the motor shaft of the first motor is connected to the second end of the transmission shaft through a coupling. When the first motor is working, it drives the fixed collar to rotate clockwise by a first predetermined angle with the transmission shaft as the rotating axis, and then rotates counterclockwise by a second predetermined angle, so as to realize the swing of the extraction tank with the transmission shaft as the pivot.

[0016] In one embodiment of the utility model, the stirring mechanism includes a stirring shaft and a stirring paddle. The stirring shaft is arranged along the central axis of the tank body of the extraction tank. The first end of the stirring shaft is connected to the motor shaft of the second motor. At least two stirring paddles are evenly arranged along the axial direction of the stirring shaft.

[0017] In one embodiment of the utility model, the stirring mechanism also includes a scraper assembly, which includes a connecting plate installed on the inner surface of the top cover and a pair of scrapers, the middle part of the connecting plate is connected to the first end of the stirring shaft, and the corresponding ends of the pair of scrapers are respectively connected to the two ends of the connecting plate.

[0018] In one embodiment of the utility model, the length of the connecting plate is the inner diameter length of the tank body of the extraction tank, and a pair of scrapers are arranged along the axial direction of the tank body of the extraction tank, so that each scraper is in contact with the inner wall of the tank body of the extraction tank, and when the stirring shaft rotates, the pair of scrapers are driven to move along the inner wall of the tank body of the extraction tank.

[0019] In one embodiment of the present invention, a feed pipe is provided on the top cover of the extraction tank, and a discharge pipe is provided at one end of the tank body of the extraction tank away from the top cover.

[0020] In one embodiment of the present invention, the third driving mechanism includes two linear modules, which are symmetrically arranged on the outer side of the tank body corresponding to two ends of the same diameter of the tank body of the extraction tank.

[0021] Beneficial effects of the utility model:

[0022] (1) The utility model is an ethylene glycol extraction device, comprising a base, an extraction tank, a first drive mechanism, a second drive mechanism and a third drive mechanism, wherein a mounting frame is mounted on the base, and the extraction tank is mounted on the mounting frame, the extraction tank comprises a tank body, a top cover and a stirring mechanism, the top cover is arranged on the top of the tank body, and the stirring mechanism is arranged inside the tank body, the first drive mechanism comprises a first motor, a transmission shaft and a rotating limit frame, one end of the transmission shaft is connected to the rotating limit frame, and the other end is connected to the motor shaft of the first motor, the second drive mechanism comprises a second motor mounted on the top cover, and the second motor is connected to the stirring mechanism, the third drive mechanism comprises at least one linear module, the linear module is mounted on the rotating limit frame, and its length direction is parallel to the axial direction of the tank body of the extraction tank, the linear module comprises a fixing portion connected to the rotating limit frame, and a connecting portion The movable part of the top cover of the extraction tank enables the stirring mechanism of the utility model to stir the raw materials in the tank body under the drive of the second motor, and at the same time the tank body can swing back and forth under the drive of the first motor, so that the raw materials in the tank body are fully mixed while being stirred, and the flow rate of the raw materials in the tank body is increased, which solves the problem of insufficient stirring and mixing of the raw materials inside the extraction device and greatly improves the extraction efficiency; at the same time, the top cover of the extraction tank is driven by the linear module to reciprocate in a straight line along the axial direction of the tank body of the extraction tank, so that the opening and closing of the tank body are convenient and quick, which solves the problem of time-consuming and labor-intensive disassembly and assembly of the top cover, facilitates the staff to clean the inside of the extraction tank, reduces the difficulty of maintenance, and does not need to manually disassemble the extraction tank repeatedly, thereby improving the maintenance efficiency and reducing the workload of manual labor.

[0023] (2) The stirring mechanism of the ethylene glycol extraction device of the utility model also includes a scraper assembly, which includes a connecting plate and a pair of scrapers. The pair of scrapers are arranged along the axial direction of the tank body of the extraction tank. Each scraper is in close contact with the inner wall of the tank body of the extraction tank. When the stirring shaft rotates, the pair of scrapers are driven to move along the inner wall of the tank body of the extraction tank. The inner wall of the tank body is cleaned by the scraping contact between the pair of scrapers and the inner wall of the tank body of the extraction tank, thereby further ensuring that the raw materials inside the tank body of the extraction tank are fully mixed and stirred, thereby improving the extraction efficiency.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present utility model, and together with the specification, are used to explain the principles of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0026] Figure 1 It is a three-dimensional schematic diagram of an ethylene glycol extraction device in one embodiment of the utility model;

[0027] Figure 2 for Figure 1 A three-dimensional schematic diagram of the extraction device shown in another perspective;

[0028] Figure 3 A schematic diagram showing the internal structure of an extraction tank in one embodiment of the utility model;

[0029] Figure 4 A schematic diagram showing the top cover of the extraction tank in an open state in one embodiment of the utility model;

[0030] Figure 5 for Figure 4 Schematic diagram of the coordination between the linear module and the rotary limit frame.

[0031] In the figure:

[0032] Base 1, mounting frame 11, extraction tank 2, tank body 21, top cover 22, feed pipe 221, discharge pipe 222, stirring mechanism 23, stirring shaft 231, stirring paddle 232, connecting plate 233, a pair of scrapers 234, first motor 31, transmission shaft 32, rotation limit frame 33, fixed collar 331, second motor 41, linear module 51, fixed part 511, movable part 512. DETAILED DESCRIPTION

[0033] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0034] See also Figures 1 to 5. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0035] See also Figure 1 to Figure 3 The utility model provides an ethylene glycol extraction device, comprising a base 1, a first driving mechanism, an extraction tank 2, a second driving mechanism and a third driving mechanism. A mounting frame 11 is mounted on the base 1; the extraction tank 2 comprises a tank body 21, a top cover 22 and a stirring mechanism 23, the top cover 22 is arranged on the top of the tank body 21, and the stirring mechanism 23 is arranged inside the tank body 21; the first driving mechanism is mounted on the mounting frame 11, and the first driving mechanism comprises a first motor 31, a transmission shaft 32 and a rotating limit frame 33, one end of the transmission shaft 32 is connected to the rotating limit frame 33, and the other end is connected to the rotating limit frame 33. The motor shaft connected to the first motor 31 is fixedly mounted on the outer wall of the tank body 21 by the rotation limit frame 33; the second driving mechanism includes a second motor 41 installed on the top cover 22, and the second motor 41 is connected to the stirring mechanism 23; and the third driving mechanism includes at least one linear module 51, which is installed on the rotation limit frame 33 and has a length direction parallel to the axial direction of the tank body 21 of the extraction tank 2, and the linear module 51 includes a fixed portion 511 connected to the rotation limit frame 33, and a movable portion 512 connected to the top cover 22 of the extraction tank 2.

[0036] Therefore, in the above-mentioned ethylene glycol extraction device, the stirring mechanism 23 stirs the raw materials inside the tank body 21 under the drive of the second motor 41, and the tank body 21 can swing back and forth under the drive of the first motor 31, so that the raw materials inside the tank body 21 are fully mixed as a whole while being stirred, and the flow rate of the raw materials inside the tank body 21 is increased, solving the problem of insufficient stirring and mixing of the raw materials inside the extraction device; at the same time, the top cover 22 of the extraction tank 2 is driven by the linear module 51 to reciprocate along the axial direction of the tank body 21 of the extraction tank 2 to realize the opening and closing of the tank body 21, solving the problem of time-consuming and labor-intensive disassembly and assembly of the top cover 22. The linear module 51 is a ball screw type or a linear motor type, and its motor controls the switch.

[0037] See Figure 4 and Figure 5 In one embodiment of the utility model, the fixed part 511 of the linear module 51 is a linear slide rail, and the movable part 512 of the linear module 51 is a pair of driving arms, which are arranged on both sides of the linear slide rail and can slide along the linear slide rail. The first motor 31 is a reduction motor, and the first motor 31 is mounted on the mounting frame 11, and the mounting frame 11 is uprightly arranged on one side of the base 1, so that the tank body 21 of the extraction tank 2 is arranged above the base 1. The third driving mechanism includes two linear modules 51, and is symmetrically arranged on the outer side of the tank body 21 corresponding to the two ends of the same diameter of the tank body 21 of the extraction tank 2, the fixed part 511 of each linear module 51 is a linear slide rail, and the movable part 512 of the linear module 51 is a pair of driving arms, which are arranged on both sides of the linear slide rail, and the length direction of the pair of driving arms and the linear slide rail is parallel to the axial direction of the tank body 21 of the extraction tank 2. The rotation limit frame 33 of the first driving mechanism includes a fixed collar 331, which is coaxially fixedly sleeved on the middle part of the tank body 21 of the extraction tank 2; the middle part of the linear slide is connected to the outer circumference of the fixed collar 331, the first end of a pair of driving arms is connected to the outer circumference of the top cover 22 of the extraction tank 2, and the second end of the pair of driving arms opposite to the first end is slidably matched on the linear slide through a slider. The first end of the transmission shaft 32 is connected to the outer circumference of the fixed collar 331, and the transmission shaft 32 is arranged on the radial extension line of the fixed collar 331, the second end of the transmission shaft 32 is inserted on the mounting frame 11 through a bearing, and the motor shaft of the first motor 31 is connected to the second end of the transmission shaft 32. When the first motor 31 is working, it drives the fixed collar 331 to rotate clockwise by a first predetermined angle with the transmission shaft 32 as the rotation axis, and then rotates counterclockwise by a second predetermined angle, so that the extraction tank 2 swings with the transmission shaft 32 as the pivot.

[0038] In one embodiment of the utility model, the stirring mechanism 23 includes a stirring shaft 231, two or more stirring paddles 232 and a scraper assembly. The stirring shaft 231 is arranged along the central axis of the tank body 21 of the extraction tank 2. One end of the stirring shaft 231 is connected to the motor shaft of the second motor 41. Two or more stirring paddles 232 are evenly arranged along the axial direction of the stirring shaft 231. The scraper assembly includes a connecting plate 233 and a pair of scrapers 234. The middle part of the connecting plate 233 is connected to the end of the first end of the stirring shaft 231. The corresponding ends of the pair of scrapers 234 are respectively connected to the two ends of the connecting plate 233. The length of the connecting plate 233 is the inner diameter length of the tank body 21 of the extraction tank 2. A pair of scrapers 234 are arranged along the axial direction of the tank body 21 of the extraction tank 2, so that each scraper is in contact with the inner wall of the tank body 21 of the extraction tank 2. When the stirring shaft 231 rotates, the pair of scrapers 234 are driven to move along the inner wall of the tank body 21 of the extraction tank 2. The scraping contact between the pair of scrapers 234 and the inner wall of the tank body 21 of the extraction tank 2 realizes the cleaning of the inner wall of the tank body 21.

[0039] In one embodiment of the present invention, more than two feeding pipes 221 are disposed on the top cover 22 of the extraction tank 2 , and a discharge pipe 222 is disposed at one end of the tank body 21 of the extraction tank 2 away from the top cover 22 .

[0040] In summary, in the present invention, an extraction device for ethylene glycol is used for extraction: first, the second motor 41 is started to drive the stirring shaft 231 to follow the rotation, and the raw materials are stirred and mixed in the extraction tank 2 by the stirring paddle 232. At the same time, with the assistance of the connecting plate 233, a pair of scrapers 234 are driven to follow the rotation, and the cleaning is achieved by the scraping contact between the pair of scrapers 234 and the inner wall of the tank body 21, thereby ensuring the cleanliness of the tank body 21. At the same time, the first motor 31 can be started to drive the transmission shaft 32 and the tank body 21 connected thereto to rotate, so that the raw materials are fully flowed and contacted in the tank body 21, thereby increasing the flow rate of the raw materials in the tank body 21 and improving the extraction efficiency.

[0041] During maintenance: by providing a linear module 51, under normal conditions, a pair of driving arms drives the top cover 22 to move downward to seal the extraction tank 2, thereby preventing leakage of the extraction tank 2. The second ends of the pair of driving arms are slidably matched with the sliders on the linear slide rails of the linear module 51. During cleaning, it is only necessary to start the linear module 51, and push the top cover 22 upward under the action of the pair of driving arms, so that the top cover 22 is opened from the top of the extraction tank 2, which is convenient for the staff to clean the inside of the extraction tank 2, reducing the difficulty of maintenance, and eliminating the need for manual repeated disassembly of the extraction tank 2, thereby improving maintenance efficiency and reducing manual workload. Therefore, the utility model of an ethylene glycol extraction device not only improves the extraction efficiency of the raw materials, but also improves maintenance efficiency and reduces manual workload.

[0042] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An extraction device for ethylene glycol, characterized in that: include: A base (1), wherein a mounting frame (11) is mounted on the base (1); An extraction tank (2), the extraction tank (2) comprising a tank body (21), a top cover (22) and a stirring mechanism (23), the top cover (22) being arranged on the top of the tank body (21), and the stirring mechanism (23) being arranged inside the tank body (21); a first driving mechanism, the first driving mechanism being mounted on the mounting frame (11), the first driving mechanism comprising a first motor (31), a transmission shaft (32) and a rotation limiting frame (33), one end of the transmission shaft (32) being connected to the rotation limiting frame (33), and the other end being connected to the motor shaft of the first motor (31), the rotation limiting frame (33) being sleeved and fixed on the outer wall of the tank body (21); a second driving mechanism, the second driving mechanism comprising a second motor (41) mounted on the top cover (22), the second motor (41) being connected to the stirring mechanism (23); as well as A third driving mechanism, the third driving mechanism comprising at least one linear module (51), the linear module (51) being mounted on the rotating limit frame (33) and having a length direction parallel to the axial direction of the tank body (21) of the extraction tank (2), the linear module (51) comprising a fixed portion (511) connected to the rotating limit frame (33), and a movable portion (512) connected to the top cover (22) of the extraction tank (2).

2. The ethylene glycol extraction device according to claim 1, characterized in that: The fixed part (511) of the linear module (51) is a linear slide rail, and the movable part (512) of the linear module (51) is a pair of driving arms. The pair of driving arms are arranged on both sides of the linear slide rail and can slide along the linear slide rail, thereby realizing the opening and closing of the tank body (21).

3. The ethylene glycol extraction device according to claim 2, characterized in that: The rotation limit frame (33) of the first driving mechanism comprises a fixed collar (331), and the fixed collar (331) is coaxially fixedly sleeved on the middle part of the tank body (21) of the extraction tank (2); the middle part of the linear slide rail is connected to the outer circumference of the fixed collar (331), the first ends of the pair of driving arms are connected to the outer circumference of the top cover (22), and the second ends of the pair of driving arms opposite to the first ends are slidably matched on the linear slide rail through a slider.

4. The ethylene glycol extraction device according to claim 3, characterized in that: The first end of the transmission shaft (32) is connected to the outer circumference of the fixing collar (331), and the transmission shaft (32) is arranged on a radial extension line of the fixing collar (331).

5. The ethylene glycol extraction device according to claim 4, characterized in that: The second end of the transmission shaft (32) opposite to the first end is inserted into the mounting frame (11) through a bearing, the first motor (31) is mounted on the mounting frame (11), and the motor shaft of the first motor (31) is connected to the second end of the transmission shaft (32). When the first motor (31) is working, it drives the fixing ring (331) to rotate clockwise by a first predetermined angle with the transmission shaft (32) as the rotation axis, and then rotates counterclockwise by a second predetermined angle, so that the extraction tank (2) can swing with the transmission shaft (32) as the pivot.

6. The ethylene glycol extraction device according to claim 1, characterized in that: The stirring mechanism (23) comprises a stirring shaft (231) and a stirring paddle (232); the stirring shaft (231) is arranged along the central axis of the tank body (21) of the extraction tank (2); a first end of the stirring shaft (231) is connected to the motor shaft of the second motor (41); and at least two stirring paddles (232) are evenly arranged on the stirring shaft (231) along its axial direction.

7. The ethylene glycol extraction device according to claim 6, characterized in that: The stirring mechanism (23) also includes a scraper assembly, which includes a connecting plate (233) mounted on the inner surface of the top cover and a pair of scrapers (234), the middle portion of the connecting plate (233) is connected to the first end of the stirring shaft (231), and the corresponding ends of the pair of scrapers (234) are respectively connected to the two ends of the connecting plate (233).

8. The ethylene glycol extraction device according to claim 7, characterized in that: The length of the connecting plate (233) is equal to the inner diameter length of the tank body (21) of the extraction tank (2); the pair of scrapers (234) are arranged along the axial direction of the tank body (21) of the extraction tank (2), so that each scraper is in contact with the inner wall of the tank body (21) of the extraction tank (2); when the stirring shaft (231) rotates, the pair of scrapers (234) are driven to move along the inner wall of the tank body (21) of the extraction tank (2).

9. The ethylene glycol extraction device according to claim 1, characterized in that: A feed pipe (221) is provided on the top cover (22) of the extraction tank (2), and a discharge pipe (222) is provided at one end of the tank body (21) of the extraction tank (2) away from the top cover (22).

10. The ethylene glycol extraction device according to claim 1, characterized in that: The third driving mechanism comprises two linear modules (51) and is symmetrically arranged on the outer side of the tank body (21) corresponding to two ends of the same diameter of the tank body (21) of the extraction tank (2).

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