Reflux device for production of organic chemical raw materials

Abstract

The utility model relates to the technical field of organic chemical raw material production, and discloses a reflux device for organic chemical raw material production, which comprises a reaction tank, a heating plate is arranged on the inner bottom wall of the reaction tank, and a feeding pipe with one end extending into the reaction tank is arranged on the left side of the top of the reaction tank. Discharging pipes with one ends respectively extending to the left end and the right end are arranged at the bottoms of the left side and the right side of the inner wall of the reaction tank. According to the reflux device for production of the organic chemical raw materials, two first positioning blocks are moved out from the interiors of two first positioning grooves by screwing two first knobs, so that fixation between two limiting blocks and a sleeve is relieved; and then, two second rotary knobs can be screwed to enable two second positioning blocks to be moved out of two second positioning grooves respectively, so that fixation between two connecting blocks and two connecting frames is relieved, at the moment, the cooling pipe can be detached by pulling the cooling pipe upwards, and then cleaning operation on the interior of the backflow pipeline is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of organic chemical raw material production technology, specifically a reflux device for organic chemical raw material production. Background Technology

[0002] In the processing of organic chemical raw materials, in order to accelerate some slow or difficult chemical reactions, it is often necessary to keep the reactants in a boiling state for a long time. In this case, a condensation device is needed to continuously condense the steam in the condenser and return it to the reactor to prevent the loss of substances in the reactor. Sometimes the reactants are volatile, and in order to prevent the reactants from evaporating too quickly and being lost, a condenser is usually installed above the reaction vessel so that the steam will be cooled and flow back into the reaction vessel. However, in actual use, the existing reflux devices are mostly fixed connections installed on the reactor, which are difficult to disassemble. When chemical raw materials are attached to the inside of the reflux pipes, it is inconvenient to clean the inside of the pipes, which will affect the condensation efficiency and thus be detrimental to use. Therefore, a reflux device for the production of organic chemical raw materials is proposed. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a reflux device for the production of organic chemical raw materials, which has advantages such as easy cleaning. It solves the problem that in the actual use of existing reflux devices, the reflux pipes installed on the reactor are mostly fixed connections, making them difficult to disassemble. This leads to difficulties in cleaning the inside of the reflux pipes when chemical raw materials are attached to them, which affects the condensation efficiency and is therefore detrimental to use.

[0005] (II) Technical Solution

[0006] To achieve the aforementioned goal of easy cleaning, this utility model provides the following technical solution: a reflux device for the production of organic chemical raw materials, comprising a reaction vessel, a heating plate provided on the inner bottom wall of the reaction vessel, a feed pipe extending into the interior of the top left side of the reaction vessel, and discharge pipes extending to their respective ends on the bottom left and right sides of the inner wall of the reaction vessel, respectively. A U-shaped block located to the right of the feed pipe is provided on the top of the reaction vessel, and a stirring assembly extending into the interior of the reaction vessel is provided on the top of the U-shaped block. A stirring assembly located to the right of the U-shaped block with one end extending into the interior of the reaction vessel is also provided on the top of the reaction vessel. The reaction vessel has an outlet pipe inside. A sleeve extending to the top of the outlet pipe is located on its outer side. A sealing ring, fixedly connected to the top of the outlet pipe, is located inside the sleeve. A liquid inlet pipe extending to the right side is located on the right side of the inner wall of the reaction vessel. A cooling pipe, with one end tightly fitted to the top of the sealing ring and the other end extending into the liquid inlet pipe, is located inside the sleeve. A condenser pipe is located on the outer side of the cooling pipe. A cooling water inlet pipe extending to the right side is located at the bottom right side of the inner wall of the condenser pipe, and a cooling water outlet pipe extending to the left side is located at the top left side of the inner wall of the condenser pipe. The water pipe has limit grooves on the top of both the left and right sides of its inner wall. Each of the two limit grooves has a limit block fixedly connected to the outside of a cooling pipe at one end. Each of the top of both the left and right sides of the sleeve has a rectangular block. Each of the two rectangular blocks has a rectangular groove on its opposite side. Each of the two rectangular grooves has a first threaded rod on its opposite inner wall. Each of the two limit blocks has a first positioning groove on its opposite side. Each of the two rectangular grooves has a first positioning block, one end of which is threaded to the outside of the two first threaded rods and the other end of which extends into the two first positioning grooves. Each of the blocks has a drive assembly at its top that extends into the interior of two rectangular grooves and is fixedly connected to the outside of two first threaded rods. The bottom of the outer side of the cooling pipe has a mounting plate with one end tightly fitted to the top of the liquid inlet pipe. Both sides of the liquid inlet pipe have connecting frames. Inside each of the two connecting frames, there is a connecting block with one end extending to its bottom and the other end extending to its top and fixedly connected to the bottom of the mounting plate. The opposite sides of the two connecting blocks have second positioning grooves. The opposite sides of the two connecting frames have positioning assemblies with one end extending into the interior of the two second positioning grooves.

[0007] Preferably, the stirring assembly includes a servo motor, the servo motor is fixedly installed on the top of the U-shaped block, the output shaft of the servo motor extends into the interior of the U-shaped block and a stirring shaft with one end extending into the interior of the reaction vessel is fixedly installed, and six stirring blades are fixedly installed on both the left and right sides of the stirring shaft inside the reaction vessel.

[0008] Preferably, the drive assembly includes a rotating shaft, with a rotating shaft movably mounted on the top of each of the two rectangular blocks, one end of which extends into the interior of each of the two rectangular slots. A drive bevel gear is fixedly mounted on the bottom of each of the two rotating shafts. A driven bevel gear is fixedly mounted on the outer side of each of the two first threaded rods, located on opposite sides of the two first positioning blocks and with one end meshing with each of the two drive bevel gears. A first knob is fixedly mounted on the top of each of the two rotating shafts.

[0009] Preferably, the positioning component includes a housing, and a housing is fixedly installed on the opposite sides of the two connecting frames. A slider is movably installed inside each of the two housings. A second positioning block is fixedly installed on the opposite sides of each of the two sliders, with one end extending into the interior of each of the two second positioning grooves. A second threaded rod is threadedly connected to the opposite sides of each of the two housings, with one end extending into its interior and movably connected to the opposite sides of each of the two sliders. A second knob is fixedly installed on the opposite sides of each of the two second threaded rods.

[0010] Preferably, a first bearing is fixedly installed on the inner wall of each of the two rectangular grooves on opposite sides, and the first threaded rod is rotatably connected to the inner wall of the rectangular groove through the first bearing.

[0011] Preferably, a second bearing is fixedly installed on the opposite sides of both sliders, and the second threaded rod is rotatably connected to the slider through the second bearing.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a reflux device for the production of organic chemical raw materials, which has the following beneficial effects:

[0014] This reflux device for organic chemical raw material production rotates by turning two first knobs, which in turn rotates two shafts and two drive bevel gears. These drive bevel gears then rotate two first threaded rods. During rotation, the first threaded rods move two first positioning blocks in opposite directions, causing them to move out of their respective positioning slots. This releases the fixation between the two limiting blocks and the sleeve. Next, turning two second knobs rotates two second threaded rods, causing two sliders and two second positioning blocks to move in opposite directions. This again moves the second positioning blocks out of their respective positioning slots, releasing the fixation between the two connecting blocks and the two connecting frames. At this point, pulling the cooling pipe upwards allows for disassembly, facilitating cleaning of the reflux pipe's interior. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2This is a partial structural diagram of the connection between the condenser tube and the cooling tube of this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This utility model Figure 2 Enlarged view of section B in the middle.

[0019] In the diagram: 1. Reaction vessel; 2. Heating plate; 3. Feed pipe; 4. Discharge pipe; 5. U-shaped block; 6. Stirring assembly; 61. Servo motor; 62. Stirring shaft; 63. Stirring blade; 7. Gas outlet pipe; 8. Sleeve; 9. Sealing ring; 10. Liquid inlet pipe; 11. Cooling pipe; 12. Condensation pipe; 13. Cooling water inlet pipe; 14. Cooling water outlet pipe; 15. Limiting groove; 16. Limiting block; 17. Rectangular block; 18. Rectangular groove; 19. First threaded rod; 20. First positioning groove; 21. First positioning block; 22. Drive assembly; 221. Rotating shaft; 222. Drive bevel gear; 223. Driven bevel gear; 224. First knob; 23. Mounting plate; 24. Connecting frame; 25. Connecting block; 26. Second positioning groove; 27. Positioning assembly; 271. Housing; 272. Slider; 273. Second positioning block; 274. Second threaded rod; 275. Second knob. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a reflux device for the production of organic chemical raw materials, including a reaction tank 1, a heating plate 2 fixedly installed on the inner bottom wall of the reaction tank 1, a feed pipe 3 with one end extending into the inside fixedly installed on the top left side of the reaction tank 1, a first solenoid valve fixedly installed on the outside of the feed pipe 3, a discharge pipe 4 with one end extending to the left and right ends respectively fixedly installed on the bottom of the left and right sides of the inner wall of the reaction tank 1, a second solenoid valve fixedly installed on the outside of the two discharge pipes 4, and a U-shaped block 5 located on the right side of the feed pipe 3 fixedly installed on the top of the reaction tank 1.

[0022] A stirring assembly 6 is fixedly installed on the top of the U-shaped block 5, extending into the interior of the reaction vessel 1. The stirring assembly 6 includes a servo motor 61. The servo motor 61 is fixedly installed on the top of the U-shaped block 5. The model of the servo motor 61 can be MR-J2S-10A. The output shaft of the servo motor 61 extends into the interior of the U-shaped block 5 and a stirring shaft 62 is fixedly installed on it, extending into the interior of the reaction vessel 1. Six stirring blades 63 are fixedly installed on both the left and right sides of the stirring shaft 62, located inside the reaction vessel 1.

[0023] A gas outlet pipe 7 is fixedly installed on the top of the reaction vessel 1, located on the right side of the U-shaped block 5 and extending into the interior of the reaction vessel 1 at one end. A sleeve 8 is fixedly installed on the outside of the gas outlet pipe 7, extending to its top at one end. A sealing ring 9 is fixedly installed inside the sleeve 8, with one end fixedly connected to the top of the gas outlet pipe 7. A liquid inlet pipe 10 is fixedly installed on the right side of the inner wall of the reaction vessel 1, extending to its right side at one end. A cooling pipe 11 is movably installed inside the sleeve 8, with one end tightly fitted to the top of the sealing ring 9 and the other end extending into the interior of the liquid inlet pipe 10. A condenser pipe 12 is fixedly installed on the outside of the cooling pipe 11. Both the upper and lower ends of the condenser pipe 12 are closed. A cooling water inlet pipe 13 is fixedly installed on the bottom right side of the inner wall of the condenser pipe 12, extending to its right side at one end. A cooling water outlet pipe 14 is fixedly installed on the top left side of the inner wall of the condenser pipe 12, extending to its left side at one end.

[0024] Limiting grooves 15 are formed on the top of both the left and right sides of the inner wall of the sleeve 8. The inner top walls of both limiting grooves 15 are open. A limiting block 16, which is fixedly connected to the outside of a cooling pipe 11, is movably installed inside each of the two limiting grooves 15. The bottoms of the two limiting blocks 16 are respectively in contact with the inner bottom walls of the two limiting grooves 15. Rectangular blocks 17 are fixedly installed on the top of both the left and right sides of the sleeve 8. Rectangular grooves 18 are formed on the opposite sides of the two rectangular blocks 17. First threaded rods 19 are movably installed on the inner walls of the opposite sides of the two rectangular grooves 18. Each rectangular groove 18 has a first bearing fixedly installed on the inner wall of the opposite side. The first threaded rod 19 is rotatably connected to the inner wall of the rectangular groove 18 through the first bearing. Each of the two limiting blocks 16 has a first positioning groove 20 on the opposite side. Each of the two rectangular grooves 18 has a first positioning block 21, one end of which is threaded to the outside of the two first threaded rods 19 and the other end of which extends into the inside of the two first positioning grooves 20. Each of the two first positioning blocks 21 has a threaded groove on the opposite side that is adapted to the two first threaded rods 19.

[0025] Each of the two rectangular blocks 17 has a drive assembly 22 movably mounted on its top, with one end extending into the interior of each of the two rectangular slots 18 and fixedly connected to the outside of each of the two first threaded rods 19. The drive assembly 22 includes a rotating shaft 221. Each of the two rectangular blocks 17 has a rotating shaft 221 movably mounted on its top, with one end extending into the interior of each of the two rectangular slots 18. Each of the two rotating shafts 221 has a drive bevel gear 222 fixedly mounted on its bottom. Each of the two first threaded rods 19 has a driven bevel gear 223 fixedly mounted on its outer side, located on opposite sides of each of the two first positioning blocks 21 and with one end meshing with each of the two drive bevel gears 222. Each of the two rotating shafts 221 has a first knob 224 fixedly mounted on its top.

[0026] A mounting plate 23 is fixedly installed on the bottom outer side of the cooling pipe 11, with one end tightly fitting the top of the liquid inlet pipe 10. Connecting frames 24 are fixedly installed on both the left and right sides of the liquid inlet pipe 10. A connecting block 25 is movably installed inside each of the two connecting frames 24, with one end extending to its bottom and the other end extending to its top and fixedly connected to the bottom of the mounting plate 23. A second positioning groove 26 is provided on the opposite sides of the two connecting blocks 25.

[0027] A positioning component 27 is fixedly installed on the opposite sides of each of the two connecting frames 24, with one end extending into the interior of each of the two second positioning grooves 26. The positioning component 27 includes a housing 271. The housing 271 is fixedly installed on the opposite sides of each of the two connecting frames 24. A slider 272 is movably installed inside each of the two housings 271. A second positioning block 273 is fixedly installed on the opposite sides of each of the two sliders 272, with one end extending into the interior of each of the two second positioning grooves 26. A second threaded rod 274 is threadedly connected to the opposite sides of each of the two housings 271, with one end extending into its interior and movably connected to the opposite sides of each of the two sliders 272. Threaded holes adapted to the two second threaded rods 274 are opened on the opposite sides of each of the two housings 271. A second bearing is fixedly installed on the opposite sides of each of the two sliders 272. The second threaded rod 274 is rotatably connected to the slider 272 through the second bearing. A second knob 275 is fixedly installed on the opposite sides of each of the two second threaded rods 274.

[0028] All electrical components mentioned in the text are connected to an external controller and 220V AC mains power, and the external controller can be a conventional known device such as a computer that is used for control.

[0029] In operation, organic chemical raw materials are added into the reaction vessel 1 through the feed pipe 3. Then, the first solenoid valve is closed via an external controller, the heating plate 2 is activated to heat the raw materials, and the servo motor 61 is started to drive the stirring shaft 62 and stirring blades 63 to rotate, thus stirring the raw materials and keeping them in a boiling state for an extended period. The volatilized raw materials then enter the cooling pipe 11 through the vent pipe 7. Simultaneously, cooling water is pumped from the cooling water inlet pipe 13 to the condenser pipe 12 via an external pump and discharged through the cooling water outlet pipe 14, thereby cooling and condensing the volatilized raw materials in the cooling pipe 11. Finally, the condensed liquid raw materials return to the reaction vessel 1 through the liquid inlet pipe 10, thus performing a reflux operation. When raw materials adhere to the inner wall of the cooling pipe 11 and need cleaning, the two first solenoid valves can be turned... Knob 224 drives two rotating shafts 221 and two driving bevel gears 222 to rotate, which in turn drives two driven bevel gears 223 to rotate two first threaded rods 19. During the rotation of the two first threaded rods 19, the two first positioning blocks 21 move in opposite directions, causing the two first positioning blocks 21 to move out of the two first positioning grooves 20 respectively, thereby releasing the fixation between the two limit blocks 16 and the sleeve 8. Then, the two second knobs 275 can be turned to drive the two second threaded rods 274 to rotate, thereby driving the two sliders 272 and the two second positioning blocks 273 to move in opposite directions, causing the two second positioning blocks 273 to move out of the two second positioning grooves 26 respectively, thereby releasing the fixation between the two connecting blocks 25 and the two connecting frames 24. At this time, the cooling pipe 11 can be removed by pulling it upward, which facilitates the cleaning of the inside of the return pipe.

[0030] In summary, this reflux device for organic chemical raw material production rotates two shafts 221 and two drive bevel gears 222 by turning two first knobs 224. This, in turn, drives two first threaded rods 19 to rotate via two driven bevel gears 223. During rotation, the two first threaded rods 19 cause two first positioning blocks 21 to move in opposite directions, dislodging them from the two first positioning grooves 20 and releasing the fixation between the two limiting blocks 16 and the sleeve 8. Then, turning two second knobs 275 rotates two second threaded rods 274, thereby driving two sliders 27... 2. The two second positioning blocks 273 move in opposite directions, so that the two second positioning blocks 273 are removed from the inside of the two second positioning slots 26 respectively, thereby releasing the fixation between the two connecting blocks 25 and the two connecting frames 24. At this time, the cooling pipe 11 can be pulled upward to remove it, which facilitates the cleaning of the inside of the return pipe. This solves the problem that in the actual use of existing return devices, since the return pipes installed on the reactor are mostly fixed connections and difficult to disassemble, it is inconvenient to clean the inside of the return pipe when there are chemical raw materials attached to it, which will affect the condensation efficiency and thus be detrimental to use.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reflux device for the production of organic chemical raw materials, comprising a reaction vessel (1), wherein a heating plate (2) is provided on the inner bottom wall of the reaction vessel (1), a feed pipe (3) extending into the interior is provided on the top left side of the reaction vessel (1), and a discharge pipe (4) extending into the left and right sides of the inner wall of the reaction vessel (1) is provided on the bottom of both sides respectively, a U-shaped block (5) located to the right of the feed pipe (3) is provided on the top of the reaction vessel (1), a stirring assembly (6) extending into the interior of the reaction vessel (1) is provided on the top of the U-shaped block (5), and an vent pipe (7) located to the right of the U-shaped block (5) and extending into the interior of the reaction vessel (1) is provided on the top of the reaction vessel (1), and an outer side of the vent pipe (7) is provided on the right side of the U-shaped block (5). A sleeve (8) is provided with one end extending to its top. A sealing ring (9) is provided inside the sleeve (8) with one end fixedly connected to the top of the gas outlet pipe (7). A liquid inlet pipe (10) is provided on the right side of the inner wall of the reaction vessel (1). A cooling pipe (11) is provided inside the sleeve (8) with one end tightly fitted to the top of the sealing ring (9) and the other end extending into the liquid inlet pipe (10). A condenser pipe (12) is provided on the outside of the cooling pipe (11). A cooling water inlet pipe (13) is provided at the bottom right side of the inner wall of the condenser pipe (12) with one end extending to its right side. A cooling water outlet pipe (14) is provided at the top left side of the inner wall of the condenser pipe (12). The characteristic of the sleeve (8) is: The sleeve (8) has a limiting groove (15) on the top of both the left and right sides of its inner wall. Each of the two limiting grooves (15) has a limiting block (16) fixedly connected to the outside of a cooling pipe (11) at one end. The sleeve (8) has a rectangular block (17) on the top of both the left and right sides. Each of the two rectangular blocks (17) has a rectangular groove (18) on its opposite side. Each of the two rectangular grooves (18) has a first threaded rod (19) on its opposite inner wall. Each of the two limiting blocks (16) has a first positioning groove (20) on its opposite side. Each of the two rectangular grooves (18) has a first positioning block (21) with one end threaded to the outside of each of the two first threaded rods (19) and the other end extending into the inside of each of the two first positioning grooves (20). The two rectangular blocks (17) have a first positioning groove (18) on its opposite side of its top of both sides of its inner wall. The top of each of the two tubes (17) is provided with a drive assembly (22) that extends into the interior of two rectangular grooves (18) and is fixedly connected to the outside of two first threaded rods (19). The bottom of the outer side of the cooling tube (11) is provided with a mounting plate (23) that fits tightly against the top of the liquid inlet tube (10). The left and right sides of the liquid inlet tube (10) are provided with connecting frames (24). The interior of each of the two connecting frames (24) is provided with a connecting block (25) that extends to the bottom of the frame and to the top of the frame and is fixedly connected to the bottom of the mounting plate (23). The opposite sides of the two connecting blocks (25) are provided with second positioning grooves (26). The opposite sides of the two connecting frames (24) are provided with positioning assemblies (27) that extend into the interior of the two second positioning grooves (26).

2. The reflux device for producing organic chemical raw materials according to claim 1, characterized in that: The stirring assembly (6) includes a servo motor (61). The servo motor (61) is fixedly installed on the top of the U-shaped block (5). The output shaft of the servo motor (61) extends into the interior of the U-shaped block (5) and a stirring shaft (62) with one end extending into the interior of the reaction vessel (1) is fixedly installed. Six stirring blades (63) located inside the reaction vessel (1) are fixedly installed on both the left and right sides of the stirring shaft (62).

3. The reflux device for producing organic chemical raw materials according to claim 1, characterized in that: The drive assembly (22) includes a rotating shaft (221). The top of each of the two rectangular blocks (17) is movably mounted with a rotating shaft (221) extending into the interior of the two rectangular slots (18). The bottom of each of the two rotating shafts (221) is fixedly mounted with a drive bevel gear (222). The outer sides of each of the two first threaded rods (19) are fixedly mounted with a driven bevel gear (223) located on opposite sides of the two first positioning blocks (21) and meshing with the two drive bevel gears (222) at one end. The top of each of the two rotating shafts (221) is fixedly mounted with a first knob (224).

4. The reflux device for producing organic chemical raw materials according to claim 1, characterized in that: The positioning component (27) includes a housing (271), and the housing (271) is fixedly installed on the opposite sides of the two connecting frames (24). The slider (272) is movably installed inside the two housings (271). The opposite sides of the two sliders (272) are fixedly installed with a second positioning block (273) with one end extending into the two second positioning grooves (26). The opposite sides of the two housings (271) are threaded with a second threaded rod (274) with one end extending into its interior and movably connected to the opposite sides of the two sliders (272). The opposite sides of the two second threaded rods (274) are fixedly installed with a second knob (275).

5. A reflux device for producing organic chemical raw materials according to claim 1, characterized in that: First bearings are fixedly installed on the inner walls of the two rectangular grooves (18) on opposite sides, and the first threaded rod (19) is rotatably connected to the inner wall of the rectangular groove (18) through the first bearings.

6. A reflux device for producing organic chemical raw materials according to claim 4, characterized in that: The two sliders (272) are fixedly mounted with second bearings on opposite sides, and the second threaded rod (274) is rotatably connected to the slider (272) through the second bearings.

Images