Extraction device for chemical industry

Abstract

The utility model provides a chemical extraction device, and relates to the technical field of chemical extraction, the chemical extraction device comprises a treatment tank, the bottom of the treatment tank is fixedly provided with a plurality of support legs, the top of the treatment tank is provided with a cover plate, the bottom of the treatment tank is fixedly provided with a delivery pipe in a penetrating manner, and the delivery pipe is provided with a valve; a hollow shaft is fixedly and rotatably installed at the bottom of the cover plate, and the top end of the hollow shaft penetrates through the cover plate and extends to the position above the top of the cover plate. The hollow shaft is driven by the servo motor to realize revolution of the stirring roller, and the stirring roller is driven by the bevel gear pair fixed on the transmission shaft to synchronously rotate, so that a strong turbulent flow composite flow field is formed, and the mixing and mass transfer efficiency is greatly improved. Due to the closed design that the driving unit is externally arranged and the transmission pair is internally arranged in the hollow shaft, the corrosive and high-temperature environment in the tank is effectively isolated, the safety and maintenance problems caused by exposed parts are solved, and the system reliability and the operation safety are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical extraction technology, and more specifically, to an extraction device for chemical applications. Background Technology

[0002] In modern chemical, pharmaceutical, food and metallurgical industries, solvent extraction is a core separation and purification technology that achieves selective separation and enrichment of target components by utilizing the difference in the partition coefficients of substances between two immiscible phases (usually an aqueous phase and an organic phase).

[0003] For example, the specification of the "Extraction Device for Chemical Use" disclosed in Chinese Utility Model Patent (Publication No.: CN221981620U) states that: an inner cylinder and an outer cylinder are provided, with a flow cavity between them. A conveying pipe is connected to the inner cylinder, and its bottom end is connected to the flow cavity. The gas generated by the evaporation of the light phase liquid after heating first flows downward through the conveying pipe, then flows upward through the flow cavity, and finally condenses. During the flow, the waste heat is recovered and utilized through the conveying pipe and the inner cylinder, which makes the liquid in the inner cylinder heat up better, and at the same time, the subsequent condensation effect is better.

[0004] For example, the Chinese utility model patent (publication number: CN215916517U) discloses an "extraction device for chemical industry". The specification states that: a reduction motor drives a round shaft and a reciprocating screw to rotate, thereby causing a moving ring to drive a connecting shaft to reciprocate in the horizontal direction. This causes the connecting shaft to drive a connecting moving plate and a convex block to reciprocate along the trajectory of a concave slide rail in a convenient and stable manner. This causes a fixed support shaft to drive the connecting round plate and the waterproof motor to reciprocate quickly and stably. This allows the material stirring shaft to stir the material quickly and effectively, which not only saves working time but also greatly improves the degree of mixing of the material, thereby improving the extraction effect.

[0005] The aforementioned technologies have several shortcomings. In practical use, firstly, the drive motor or gears are often directly exposed inside the equipment, subject to long-term contact with high temperatures and corrosive media, which can easily lead to wear, short circuits, and even the risk of combustion and explosion, making maintenance difficult and posing significant safety hazards. Secondly, the stirring mode is limited, mostly achieving only axial rotation, with the flow field dominated by laminar and tangential flow, lacking multidimensional turbulence. This results in numerous mixing dead zones, low mass transfer efficiency, and difficulty in achieving rapid and uniform dispersion of materials, thus hindering the improvement of extraction efficiency.

[0006] Therefore, we have made improvements to this and proposed an extraction device for chemical applications. Utility Model Content

[0007] To address the shortcomings of existing technologies, this invention provides an extraction device for chemical applications, which solves the problems mentioned in the background section.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A chemical extraction device includes a processing tank, a plurality of support legs fixedly installed at the bottom of the processing tank, a cover plate provided at the top of the processing tank, an outlet pipe fixedly inserted at the bottom of the processing tank, a valve provided on the outlet pipe, a hollow shaft fixedly and rotatably installed at the bottom of the cover plate, the top end of the hollow shaft penetrating the cover plate and extending above the top of the cover plate, and a feed end fixedly inserted at the top of the cover plate.

[0010] Several sets of symmetrically distributed transverse stirring rollers are rotatably mounted on the outer wall of the hollow shaft. One end of each transverse stirring roller passes through the hollow shaft and extends into its interior. Several vertical stirring rollers are fixedly mounted on the outer wall of each transverse stirring roller. A first bevel gear is fixedly mounted on the end of each transverse stirring roller located inside the hollow shaft. A drive shaft is rotatably mounted inside the hollow shaft. The top end of the drive shaft passes through the hollow shaft and extends above the top end of the hollow shaft. A fixing bracket is fixedly mounted on the rear side of the top of the cover plate. The fixing bracket is fixedly connected to the top end of the drive shaft. Several second bevel gears are fixedly mounted on the outer wall of the drive shaft. The second bevel gears mesh with the first bevel gears. A servo motor is fixedly mounted on the top of the cover plate on one side of the hollow shaft. A transmission mechanism is provided between the servo motor and the hollow shaft. A cooling assembly is provided above one side of the processing tank.

[0011] As a preferred technical solution of this application, the cooling assembly includes a cooling box fixedly installed above one side of the processing tank. A guide pipe is fixedly installed above one side of the inner wall of the processing tank. One end of the guide pipe passes through the cooling box and extends into the interior of the cooling box. A drain pipe is fixedly installed below one side of the cooling box. An inner cooling pipe is fixedly connected between the drain pipe and the guide pipe inside the cooling box. An outer pipe is fixedly installed at the top of the cooling box. A recovery pipe is fixedly installed at the bottom of the cooling box. An outer pipe is fixedly installed between the outer pipe and the recovery pipe inside the cooling box. The inner cooling pipe passes through the interior of the outer pipe. Several heating rods are provided on the inner wall of the processing tank.

[0012] As a preferred technical solution of this application, the outer diameter of the inner cooling pipe is smaller than the inner diameter of the outer pipe, and a stabilizing frame is fixedly installed between the back of the cooling box and the outer surface of the processing tank.

[0013] As a preferred technical solution of this application, a sealed bearing corresponding to the position and number of the transverse stirring rollers is fixedly installed on the upper part of the outer wall of the hollow shaft, and the transverse stirring rollers are rotatably connected to the outer wall of the hollow shaft through the sealed bearings.

[0014] As a preferred technical solution of this application, a visualization window is provided on the outer surface of the processing tank.

[0015] As a preferred technical solution of this application, the transmission mechanism consists of a driving wheel, a driven wheel and a belt. The driving wheel and the driven wheel are connected by belt drive. The driving wheel is fixedly installed on the drive end of the servo motor, and the driven wheel is fixedly installed on the top outer wall of the hollow shaft.

[0016] As a preferred technical solution of this application, the cover plate is fixedly installed on the top of the processing tank by a number of equally spaced bolts, and symmetrically distributed lifting rings are welded to the top of the cover plate.

[0017] As a preferred technical solution of this application, both the inner cooling pipe and the outer pipe are in the shape of a continuous S-shape.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] In the scheme of this application:

[0020] 1. Through the coordinated use of a processing tank, support legs, visualization window, cover plate, transmission mechanism, fixed frame, servo motor, transmission shaft, hollow shaft, feed end, discharge pipe, first bevel gear, vertical stirring roller, horizontal stirring roller, sealed bearing, and second bevel gear, the servo motor drives the hollow shaft to achieve the revolution of the stirring rollers, and the bevel gear pair on the fixed transmission shaft drives their synchronous rotation, forming a strong turbulent composite flow field, which greatly improves mixing and mass transfer efficiency. The external drive unit and the enclosed design of the transmission pair built into the hollow shaft effectively isolate the corrosive and high-temperature environment inside the tank, solve the safety and maintenance problems caused by exposed components, and significantly improve the system reliability and operational safety.

[0021] 2. By using an external pipe, cooling tank, drain pipe, recovery pipe, outer pipe, inner cooling pipe, guide pipe, and heating rod in combination, high-efficiency extraction and separation based on boiling point differences is achieved through the integrated functions of heating, evaporation, condensation, and heat recovery. The heating rod vaporizes the low-boiling-point components, which then enter the S-shaped inner cooling pipe through the guide pipe and rapidly condense under the enveloping heat exchange of cooling water, before being discharged through the drain pipe. The heated cooling water is then discharged through the recovery pipe for reuse, achieving waste heat recovery. This system features high functional integration, good separation efficiency, and strong process adaptability. Attached Figure Description

[0022] Figure 1 This application provides a three-dimensional structural schematic diagram of an extraction device for chemical applications;

[0023] Figure 2 This is a bottom view of the structure of a chemical extraction device provided in this application;

[0024] Figure 3 A cross-sectional structural schematic diagram of a hollow shaft in a chemical extraction device provided in this application;

[0025] Figure 4 A cross-sectional structural schematic diagram of a cooling box in a chemical extraction device provided in this application;

[0026] Figure 5 This is a schematic diagram of the connection structure between the outer tube and the inner cooling tube in a chemical extraction device provided in this application.

[0027] The image shows:

[0028] 1. Processing tank; 2. Support leg; 3. Visual window; 4. Cover plate; 5. Transmission mechanism; 6. Fixing frame; 7. Servo motor; 8. Drive shaft; 9. Hollow shaft; 10. Lifting ring; 11. Feed end; 12. External pipe; 13. Stabilizer; 14. Cooling box; 15. Drain pipe; 16. Recovery pipe; 17. Outlet pipe; 18. First bevel gear; 19. Vertical stirring roller; 20. Horizontal stirring roller; 21. Sealed bearing; 22. Outer pipe; 23. Inner cooling pipe; 24. Guide pipe; 25. Heating rod; 26. Second bevel gear. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0031] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] Example 1

[0034] Please refer to Figures 1-5A chemical extraction device includes a processing tank 1, a plurality of support legs 2 fixedly installed at the bottom of the processing tank 1, a cover plate 4 provided at the top of the processing tank 1, an outlet pipe 17 fixedly inserted at the bottom of the processing tank 1, a valve provided on the outlet pipe 17, a hollow shaft 9 fixedly rotatably installed at the bottom of the cover plate 4, the top end of the hollow shaft 9 passing through the cover plate 4 and extending to the top of the cover plate 4, and a feed end 11 fixedly inserted at the top of the cover plate 4.

[0035] Several sets of symmetrically distributed transverse stirring rollers 20 are rotatably mounted on the outer wall of the hollow shaft 9. One end of the transverse stirring roller 20 passes through the hollow shaft 9 and extends into the interior of the hollow shaft 9. Several vertical stirring rollers 19 are fixedly mounted on the outer wall of the transverse stirring roller 20. A first bevel gear 18 is fixedly mounted on the end of the transverse stirring roller 20 located inside the hollow shaft 9. A drive shaft 8 is rotatably mounted inside the hollow shaft 9. The top end of the drive shaft 8 passes through the hollow shaft 9 and extends above the top end of the hollow shaft 9. A fixing bracket 6 is fixedly mounted on the rear side of the top of the cover plate 4. The fixing bracket 6 is fixedly connected to the top end of the drive shaft 8. Several second bevel gears 26 are fixedly mounted on the outer wall of the drive shaft 8. The second bevel gears 26 mesh with the first bevel gears 18. A servo motor 7 is fixedly mounted on the top of the cover plate 4 located on one side of the hollow shaft 9. A transmission mechanism 5 is provided between the servo motor 7 and the hollow shaft 9. A cooling assembly is provided above one side of the processing tank 1.

[0036] Furthermore, a sealed bearing 21 corresponding to the position and number of the transverse stirring rollers 20 is fixedly installed on the upper part of the outer wall of the hollow shaft 9. The transverse stirring rollers 20 are rotatably connected to the outer wall of the hollow shaft 9 through the sealed bearings 21. This improves the sealing performance at the connection between the hollow shaft 9 and the transverse stirring rollers 20.

[0037] Furthermore, a visualization window 3 is provided on the outer surface of the processing tank 1. This provides operators with a direct internal observation channel, facilitating real-time monitoring of the material mixing state, liquid level changes, and reaction process without interrupting operation or opening the equipment, thereby enhancing the intuitiveness, safety, and ease of operation of process control.

[0038] Furthermore, the transmission mechanism 5 consists of a driving pulley, a driven pulley, and a belt. The driving pulley and the driven pulley are connected by a belt drive. The driving pulley is fixedly mounted on the drive end of the servo motor 7, and the driven pulley is fixedly mounted on the top outer wall of the hollow shaft 9. This effectively isolates the rigid connection between the servo motor 7 and the hollow shaft 9, providing vibration damping and overload protection. The belt drive has a certain degree of elasticity and compensation capability, can adapt to minor installation errors between the two shafts, has low operating noise, and is easy to maintain and replace, thus improving the stability and reliability of the drive system.

[0039] Furthermore, the cover plate 4 is fixedly installed on the top of the treatment tank 1 by several equally spaced bolts. Symmetrically distributed lifting rings 10 are welded to the top of the cover plate 4, which realizes the detachability of the cover plate 4 and facilitates equipment maintenance and cleaning.

[0040] Example 2

[0041] The chemical extraction apparatus provided in Example 1 is further optimized. Specifically, the cooling assembly includes a cooling box 14 fixedly installed above one side of the processing tank 1. A guide pipe 24 is fixedly installed above one side of the inner wall of the processing tank 1. One end of the guide pipe 24 passes through the cooling box 14 and extends into the interior of the cooling box 14. A drain pipe 15 is fixedly installed below one side of the cooling box 14. An inner cooling pipe 23 is fixedly connected between the drain pipe 15 and the guide pipe 24 inside the cooling box 14. An outer pipe 12 is fixedly installed at the top of the cooling box 14. A recovery pipe 16 is fixedly installed at the bottom of the cooling box 14. An outer pipe 22 is fixedly installed between the outer pipe 12 and the recovery pipe 16 inside the cooling box 14. The inner cooling pipe 23 passes through the interior of the outer pipe 22. Several heating rods 25 are provided on the inner wall of the processing tank 1.

[0042] Furthermore, the outer diameter of the inner cooling pipe 23 is smaller than the inner diameter of the outer pipe 22, forming an annular flow channel to ensure that the cooling water can flow evenly and enhance the heat exchange contact. A stabilizing bracket 13 is fixedly installed between the back of the cooling box 14 and the outer surface of the processing tank 1. This improves the overall rigidity between the cooling box 14 and the processing tank 1.

[0043] Furthermore, both the inner cooling pipe 23 and the outer pipe 22 are continuous S-shaped. This significantly extends the cooling water flow path and the vapor-phase condensation path, greatly increasing the heat exchange area within a limited space.

[0044] It should be noted that the controller control circuit can be implemented by those skilled in the art through simple programming, and is common knowledge in the field. It is only used and not modified, so the control method and circuit connection will not be described in detail.

[0045] The following is the usage process of the chemical extraction device provided by this utility model:

[0046] When the device is in operation, the material and extractant enter the processing tank 1 through the feed end 11. After the servo motor 7 is started, its output drives the hollow shaft 9 to rotate through the transmission mechanism 5, which in turn drives the horizontal stirring roller 20 and the vertical stirring roller 19 to revolve. Based on the fixed connection between the transmission shaft 8 and the fixed frame 6, during the revolution, the horizontal stirring roller 20 drives the first bevel gear 18 to rotate, so that it meshes with the second bevel gear 26 fixed on the transmission shaft 8, thereby driving the first bevel gear 18 and its connected vertical stirring roller 19 and horizontal stirring roller 20 to rotate. Thus, the stirring assembly realizes the combined motion of revolution and rotation, forming a strong turbulent, multi-dimensional mixed flow field in the processing tank 1, which significantly improves the dispersion uniformity of the material and the extraction mass transfer efficiency. In terms of structural safety, the main drive units, such as the servo motor 7, are installed outside the cover plate 4, while the transmission pair of the first bevel gear 18 and the second bevel gear 26 is completely enclosed inside the hollow shaft 9, avoiding direct contact with corrosive and high-temperature materials inside the tank. This effectively solves the wear, short-circuit, and safety risks caused by exposed transmission components in traditional designs, improving the reliability and ease of maintenance of the system. After extraction, the stratified materials can be discharged separately through the outlet pipe 17.

[0047] This device integrates heating, evaporation, and condensation separation functions based on the differences in boiling points of the components during material extraction. After entering the processing tank 1 through the feed end 11, the material is heated by the built-in heating rod 25. The low-boiling-point components vaporize upon heating and are guided into the inner cooling pipe 23 through the guide pipe 24. Simultaneously, cooling water enters the annular space formed by the outer pipe 22 and the inner cooling pipe 23 through the outer pipe 12, ensuring thorough heat exchange with the outer wall of the inner cooling pipe 23. The vaporized components are condensed into a liquid phase by the cooling water within the inner cooling pipe 23 and are finally discharged through the drain pipe 15, completing the separation. The cooled water, having absorbed heat, is discharged to the recovery system through the recovery pipe 16, realizing the utilization of waste heat resources. By integrating heating, vaporization, condensation, and heat recovery functions into one unit, and achieving efficient separation based on boiling point differences, the device's process applicability and functional versatility are expanded.

[0048] It should be noted that all components used in this application are standard parts that can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets and welding that are mature in the prior art. The mechanical parts and electrical equipment adopt conventional models in the prior art. The circuit connection adopts conventional connection methods in the prior art. The electrical equipment is connected to an external safe power source. These will not be described in detail here.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model 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 specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. An extraction apparatus for chemical applications, characterized in that, The system includes a processing tank (1), with several support legs (2) fixedly installed at the bottom of the processing tank (1), a cover plate (4) provided at the top of the processing tank (1), an outlet pipe (17) fixedly inserted at the bottom of the processing tank (1), a valve provided on the outlet pipe (17), a hollow shaft (9) fixedly rotatably installed at the bottom of the cover plate (4), the top end of the hollow shaft (9) penetrating the cover plate (4) and extending to the top of the cover plate (4), and a feed end (11) fixedly inserted at the top of the cover plate (4). Several sets of symmetrically distributed transverse stirring rollers (20) are rotatably mounted on the outer wall of the hollow shaft (9). One end of each transverse stirring roller (20) passes through the hollow shaft (9) and extends into the interior of the hollow shaft (9). Several vertical stirring rollers (19) are fixedly mounted on the outer wall of each transverse stirring roller (20). A first bevel gear (18) is fixedly mounted on one end of each transverse stirring roller (20) located inside the hollow shaft (9). A drive shaft (8) is rotatably mounted inside the hollow shaft (9). The top end of the drive shaft (8) passes through the hollow shaft (9) and extends into the interior of the hollow shaft (9). Above the top of the cover plate (4), a fixing frame (6) is fixedly installed on the rear side of the top of the cover plate (4). The fixing frame (6) is fixedly connected to the top of the transmission shaft (8). Several second bevel gears (26) are fixedly installed on the outer wall of the transmission shaft (8). The second bevel gears (26) mesh with the first bevel gears (18). A servo motor (7) is fixedly installed on the top of the cover plate (4) on one side of the hollow shaft (9). A transmission mechanism (5) is provided between the servo motor (7) and the hollow shaft (9). A cooling component is provided above one side of the processing tank (1).

2. The chemical extraction apparatus according to claim 1, characterized in that, The cooling assembly includes a cooling box (14) fixedly installed above one side of the processing tank (1). A guide pipe (24) is fixedly installed above one side of the inner wall of the processing tank (1). One end of the guide pipe (24) passes through the cooling box (14) and extends into the interior of the cooling box (14). A drain pipe (15) is fixedly installed below one side of the cooling box (14). An inner cooling pipe (23) is fixedly connected between the drain pipe (15) and the guide pipe (24) inside the cooling box (14). An outer pipe (12) is fixedly installed at the top of the cooling box (14). A recovery pipe (16) is fixedly installed at the bottom of the cooling box (14). An outer pipe (22) is fixedly installed between the outer pipe (12) and the recovery pipe (16) inside the cooling box (14). The inner cooling pipe (23) passes through the interior of the outer pipe (22). Several heating rods (25) are provided on the inner wall of the processing tank (1).

3. The chemical extraction apparatus according to claim 2, characterized in that, The outer diameter of the inner cooling pipe (23) is smaller than the inner diameter of the outer pipe (22), and a stabilizing frame (13) is fixedly installed between the back of the cooling box (14) and the outer surface of the processing tank (1).

4. The chemical extraction apparatus according to claim 1, characterized in that, A sealed bearing (21) corresponding to the position and number of the transverse stirring rollers (20) is fixedly installed on the upper part of the outer wall of the hollow shaft (9). The transverse stirring rollers (20) are rotatably connected to the outer wall of the hollow shaft (9) through the sealed bearing (21).

5. The chemical extraction apparatus according to claim 1, characterized in that, A visualization window (3) is provided on the outer surface of the processing tank (1).

6. The chemical extraction apparatus according to claim 1, characterized in that, The transmission mechanism (5) consists of a drive wheel, a driven wheel and a belt. The drive wheel and the driven wheel are connected by belt drive. The drive wheel is fixedly installed on the drive end of the servo motor (7), and the driven wheel is fixedly installed on the top outer wall of the hollow shaft (9).

7. The chemical extraction apparatus according to claim 1, characterized in that, The cover plate (4) is fixedly installed on the top of the treatment tank (1) by a number of equally spaced bolts, and symmetrically distributed lifting rings (10) are welded to the top of the cover plate (4).

8. The chemical extraction apparatus according to claim 2, characterized in that, The inner cooling pipe (23) and the outer pipe (22) are both continuous S-shaped.

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