Divided-flow type pipeline continuous reaction device for diazotization of pyrazole alcohol

Abstract

The utility model discloses a pyrazole alcohol diazotization shunting type pipeline continuous reaction device, and relates to the technical field of reaction devices. The pyrazol alcohol diazotization flow-dividing type pipeline continuous reaction device comprises a micro-mixer, a first guide pipe and a second guide pipe are fixed to the two inlet ends of the micro-mixer respectively, first valves are installed on the first guide pipe and the second guide pipe respectively, a tubular reactor is fixed to the outlet end of the micro-mixer, and a reaction valve is fixed to the outlet end of the tubular reactor. A bottom plate is fixed at the bottom of the reaction valve, a cover body is mounted above the reaction valve, and a lifting assembly for lifting the cover body above the reaction valve is mounted above the bottom plate; according to the device, an anti-deposition structure is specially designed, so that the auger conveying piece can be driven by the sliding block to move and rotate along the sliding groove, raw materials are effectively prevented from being deposited at the bottom of the reaction valve, the problem of insufficient reaction caused by accumulation of the raw materials is solved, and the reaction efficiency and the product quality are further improved.

Description

Technical Field

[0001] This utility model relates to the field of reaction device technology, specifically a pyrazol diazotization split-flow pipeline continuous reaction device. Background Technology

[0002] Pyrazol diazotization refers to the process by which pyrazol or its related compounds react with nitrous acid or its salts under specific conditions to generate diazonium salts; a split-flow pipeline continuous reaction device is a special type of chemical equipment that combines split-flow technology with the characteristics of continuous reaction, enabling efficient, continuous and stable chemical reactions.

[0003] Referring to patent application CN212819925U, a novel continuous-flow diazotization reaction apparatus is disclosed, belonging to the field of diazotization reaction technology. This novel continuous-flow diazotization reaction apparatus includes a micro-mixer, a tubular reactor, and a receiving vessel, which are connected sequentially. A flow divider ring is provided inside the receiving vessel, and a water inlet pipe is connected to the top of the flow divider ring. A toothed ring is rotatably connected inside the receiving vessel, and a rotating groove is provided on the inner wall of the receiving vessel. A semi-circular tube is rotatably connected within the rotating groove, and nozzles are evenly distributed on the sidewall of the semi-circular tube. A guide tube is fixedly connected to the top of the semi-circular tube and rotatably connected to the flow divider ring. A second gear is provided on the guide tube, meshing with the outer side of the toothed ring. A first motor is rotatably connected to the top of the receiving vessel, and the output end of the first motor is connected to the first gear, which meshes with the inner side of the toothed ring. This utility model ensures reaction safety by reducing the concentration gradient and improving the mixing efficiency, and its openable cleaning method is highly efficient and fast.

[0004] As shown in the prior art, in the existing pyrazol diazotization split-flow pipeline continuous reaction device, after the raw materials enter the receiving vessel, the raw materials are stirred by only one stirring rod. This easily leads to uneven stirring, which in turn prevents the raw materials from fully contacting each other, affecting the efficiency and quality of the reaction. Furthermore, the raw materials tend to settle at the bottom of the receiving vessel, causing material accumulation and potentially resulting in incomplete reaction.

[0005] Therefore, it is necessary to provide a pyrazol diazotization split-flow pipeline continuous reaction device to solve the above-mentioned technical problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To solve the above-mentioned technical problems, this utility model provides a pyrazol diazotization split-flow pipeline continuous reaction device.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution: a pyrazol diazotization split-flow pipeline continuous reaction device, including a micro mixer, with a first conduit and a second conduit fixed at the two inlet ends of the micro mixer respectively, and a first valve installed on both the first conduit and the second conduit; a tubular reactor is fixed at the outlet end of the micro mixer, and a reaction valve is fixed at the outlet end of the tubular reactor; a base plate is fixed at the bottom of the reaction valve; a cover is installed above the reaction valve; and a lifting assembly is installed above the base plate to allow the cover to move up and down above the reaction valve.

[0010] A rotating shaft is installed below the cover, and a first motor is fixed above the cover. The rotating shaft passes through the cover and is fixed to the output end of the first motor. A stirring roller is installed on the outer wall of the rotating shaft, and an anti-deposition structure is installed at the upper end of the rotating shaft to prevent raw materials from depositing at the bottom of the reaction valve.

[0011] A discharge pipe is fixed below the reaction valve, and a second valve is installed on the discharge pipe.

[0012] Preferably, the stirring rollers are provided in a plurality of equally spaced fixed positions on the outer wall of the rotating shaft.

[0013] Preferably, the anti-deposition structure includes a mounting frame fixed to the upper end of the rotating shaft. The mounting frame is located on the side of the upper end of the rotating shaft away from the stirring roller. The inner wall of the mounting frame is symmetrically provided with grooves. A slider is slidably connected to the inner wall of the two grooves. An auger conveyor is rotatably connected below the slider. A motion component is installed on the inner wall of the mounting frame to move the slider in the groove and rotate the auger conveyor.

[0014] Preferably, the motion component includes a rack fixed above the inner wall of the mounting frame, a second motor fixed above the slider, an auger conveyor with its upper end passing through the slider and fixed to the output end of the second motor, and a gear fixed at the upper end of the auger conveyor, the gear meshing with the rack.

[0015] Preferably, the lifting assembly includes a connector fixed to one side of the cover, a fixing seat fixed above the base plate, a screw rotatably connected to the inner wall of the fixing seat near the reaction valve, the screw extending vertically, a third motor fixed below the fixing seat, the lower end of the screw passing through the fixing seat and fixed to the output end of the third motor, and the connector threadedly connected to the outer wall of the screw.

[0016] Preferably, the third motor is a geared motor.

[0017] (III) Beneficial Effects

[0018] This invention provides a pyrazol diazotization split-flow pipeline continuous reaction device. Compared with the prior art, it has the following advantages:

[0019] 1. The device is specially designed with an anti-deposition structure, which allows the screw conveyor to move and rotate along the chute under the drive of the slider, thereby effectively preventing raw materials from depositing at the bottom of the reaction valve. This design avoids the problem of incomplete reaction caused by raw material accumulation, and further improves reaction efficiency and product quality.

[0020] 2. The device has a liftable cover installed above the reaction valve, and the stirring roller and auger conveyor are located below the cover. This makes it easy to clean the inner wall of the reactor when the cover is raised, as well as to clean the stirring roller and auger conveyor. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram showing the relationship between the connector and the screw in this utility model;

[0023] Figure 3 This is a schematic diagram showing the relationship between the mounting frame and the auger conveyor of this utility model;

[0024] Figure 4 This is a schematic diagram illustrating the relationship between the gear and rack of this utility model.

[0025] Labels in the diagram: 1. Micro mixer; 2. First conduit; 3. Second conduit; 4. First valve; 5. Tubular reactor; 6. Reaction valve; 7. Cover; 8. Rotary shaft; 9. First motor; 10. Stirring roller; 11. Discharge pipe; 12. Second valve; 13. Mounting frame; 14. Slide chute; 15. Sliding block; 16. Rack; 17. Screw conveyor; 18. Second motor; 19. Gear; 20. Connector; 21. Third motor; 22. Fixing base; 23. Screw; 24. Base plate. Detailed Implementation

[0026] 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.

[0027] This utility model provides two technical solutions:

[0028] Figures 1 to 4 The first implementation is shown:

[0029] A pyrazol diazotization split-flow pipeline continuous reaction device includes a micro mixer 1. A first conduit 2 and a second conduit 3 are fixed to the two inlet ends of the micro mixer 1, respectively. A first valve 4 is installed on both the first conduit 2 and the second conduit 3. A tubular reactor 5 is fixed to the outlet end of the micro mixer 1. A reaction valve 6 is fixed to the outlet end of the tubular reactor 5. A discharge pipe 11 is fixed below the reaction valve 6. A second valve 12 is installed on the discharge pipe 11. A base plate 24 is fixed to the bottom of the reaction valve 6. A cover 7 is installed above the reaction valve 6. A lifting assembly is installed above the base plate 24 to allow the cover 7 to move up and down above the reaction valve 6.

[0030] A rotating shaft 8 is installed below the cover 7, and a first motor 9 is fixed above the cover 7. The rotating shaft 8 passes through the cover 7 and is fixed to the output end of the first motor 9. A stirring roller 10 is installed on the outer wall of the rotating shaft 8. Several stirring rollers 10 are fixed on the outer wall of the rotating shaft 8 at equal intervals. An anti-deposition structure is installed at the upper end of the rotating shaft 8 to prevent raw materials from depositing at the bottom of the reaction valve 6.

[0031] The anti-deposition structure includes a mounting frame 13 fixed to the upper end of the rotating shaft 8. The mounting frame 13 is located on the side of the upper end of the rotating shaft 8 away from the stirring roller 10. The inner wall of the mounting frame 13 is symmetrically provided with grooves 14. A slider 15 is slidably connected to the inner wall of the two grooves 14. A screw conveyor 17 is rotatably connected below the slider 15. A motion component is installed on the inner wall of the mounting frame 13 to move the slider 15 in the grooves 14 and to rotate the screw conveyor 17.

[0032] The motion assembly includes a rack 16 fixed above the inner wall of the mounting frame 13, a second motor 18 fixed above the slider 15, an auger conveyor 17 whose upper end passes through the slider 15 and is fixed to the output end of the second motor 18, and a gear 19 fixed to the upper end of the auger conveyor 17, which meshes with the rack 16.

[0033] The device is specially designed with an anti-deposition structure, which allows the screw conveyor 17 to move and rotate along the slide groove 14 under the drive of the slider 15, thereby effectively preventing raw materials from depositing at the bottom of the reaction valve 6. This design avoids the problem of incomplete reaction caused by raw material accumulation, and further improves reaction efficiency and product quality.

[0034] Figures 1 to 2 The second embodiment is shown. The main difference from the first embodiment is that the lifting assembly includes a connector 20 fixed to one side of the cover 7, a fixed seat 22 fixed above the base plate 24, a screw 23 rotatably connected to the inner wall of the fixed seat 22 near the reaction valve 6, the screw 23 extending in the vertical direction, a third motor 21 fixed below the fixed seat 22, the third motor 21 being a geared motor, the lower end of the screw 23 passing through the fixed seat 22 and fixed to the output end of the third motor 21, and the connector 20 threadedly connected to the outer wall of the screw 23.

[0035] The device has a liftable cover 7 installed above the reaction valve 6, and the stirring roller 10 and the auger conveyor 17 are located below the cover 7. Thus, when the cover 7 is raised, it is convenient to clean the inner wall of the reactor, as well as to clean the stirring roller 10 and the auger conveyor 17.

[0036] Working principle:

[0037] Open the first valve 4 to allow the reaction raw materials such as pyrazol to enter the micro mixer 1 through the first conduit 2 and the second conduit 3 for preliminary mixing. The mixed reaction material enters the tubular reactor 5. The design of the tubular reactor 5 helps to achieve a continuous and stable reaction process, thereby improving the mixing efficiency. Both the micro mixer 1 and the tubular reactor 5 are existing technologies. The micro mixer 1 can adopt the most commonly used "T" type or "Y" type mixer. The existing technology is very mature and will not be described in detail here.

[0038] Then, the raw material enters the reaction valve 6 from the tubular reactor 5. The first motor 9 is started to rotate the shaft 8, which in turn stirs the agitator roller 10. The mounting frame 13 rotates along with the shaft 8, driving the auger conveyor 17 to move in a circular motion inside the reactor. The second motor 18 rotates the auger conveyor 17, transporting the raw material deposited at the bottom of the reactor to the upper part of the reactor. The gear 19 rotates with the auger conveyor 17. Since the gear 19 is meshed with the rack 16, the rotation of the auger conveyor 17 drives the slider 15 to move in the chute 14, and the auger conveyor 17 moves accordingly, thereby uniformly stirring the raw material inside the reactor and allowing the raw material inside the reactor to react fully.

[0039] Opening the second valve 12 will allow the reactants to leave the reaction valve 6 through the discharge pipe 11.

[0040] After the reactants are discharged, the third motor 21 is started to rotate the screw 23, which drives the connecting piece 20 to move upward, thereby moving the cover 7 away from the reaction valve 6. This facilitates cleaning of the inside of the reaction valve 6, as well as the screw conveyor 17 and the stirring roller 10. After cleaning, the third motor 21 drives the screw 23 to rotate in the opposite direction, thereby driving the connecting piece 20 to reset so that it fits against the top of the reactor 6.

[0041] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0042] 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 process, method, article, or apparatus.

[0043] 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 pyrazole alcohol diazotization split-flow pipe continuous reaction device, comprising a micro-mixer (1), two inlet ends of the micro-mixer (1) are respectively fixed with a first conduit (2) and a second conduit (3), a first valve (4) is installed on the first conduit (2) and the second conduit (3), and an outlet end of the micro-mixer (1) is fixed with a pipe reactor (5), characterized in that: an outlet end of the pipe reactor (5) is fixed with a reaction valve (6), a bottom of the reaction valve (6) is fixed with a bottom plate (24), a cover (7) is installed above the reaction valve (6), and a lifting assembly that makes the cover (7) lift above the reaction valve (6) is installed above the bottom plate (24); a rotating shaft (8) is installed below the cover (7), a first motor (9) is fixed above the cover (7), the rotating shaft (8) penetrates through the cover (7) and is fixed with an output end of the first motor (9), stirring rollers (10) are installed on the outer wall of the rotating shaft (8), and an anti-deposition structure that prevents raw materials from depositing on the bottom of the reaction valve (6) is installed on the upper end of the rotating shaft (8); a discharge pipe (11) is fixed below the reaction valve (6), and a second valve (12) is installed on the discharge pipe (11).

2. A continuous flow pipe reactor for diazotization of pyrazole alcohol according to claim 1, characterized in that: The stirring rollers (10) are equal in number and are equally spaced and fixed on the outer wall of the rotating shaft (8).

3. A diazotization shunt pipe continuous reaction apparatus for pyrazole alcohol according to claim 2, characterized in that: The anti-deposition structure comprises a mounting frame (13) fixed on the upper end of the rotating shaft (8), the mounting frame (13) is located on the side of the upper end of the rotating shaft (8) away from the stirring rollers (10), slide grooves (14) are symmetrically formed in the inner wall below the mounting frame (13), a sliding block (15) is slidably connected in the inner wall of the two slide grooves (14), an auger conveying member (17) is rotatably connected below the sliding block (15), and a movement assembly that makes the sliding block (15) move in the slide groove (14) and makes the auger conveying member (17) rotate is installed on the inner wall of the mounting frame (13).

4. A continuous flow pipe reactor for diazotization of pyrazole alcohol according to claim 3, characterized in that: The movement assembly comprises a rack (16) fixed on the inner wall above the mounting frame (13), a second motor (18) is fixed on the upper end of the sliding block (15), the upper end of the auger conveying member (17) penetrates through the sliding block (15) and is fixed with an output end of the second motor (18), a gear (19) is fixed on the upper end of the auger conveying member (17), and the gear (19) is in meshing connection with the rack (16).

5. A continuous flow pipe reactor for diazotization of pyrazole alcohol according to claim 1, characterized in that: The lifting assembly comprises a connecting piece (20) fixed on one side of the cover (7), a fixed seat (22) is fixed above the bottom plate (24), a screw rod (23) is rotatably connected to the inner wall of the side of the fixed seat (22) close to the reaction valve (6), the screw rod (23) extends in the vertical direction, a third motor (21) is fixed below the fixed seat (22), a lower end of the screw rod (23) penetrates through the fixed seat (22) and is fixed with an output end of the third motor (21), and the connecting piece (20) is in threaded connection with the outer wall of the screw rod (23).

6. A diazotization shunt pipe continuous reaction apparatus for pyrazole alcohol according to claim 5, characterized in that: The third motor (21) is a speed-reducing motor.

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