A propiconazole reactor

Abstract

The utility model provides a kind of propargite reactor, it is related to microchannel reactor equipment field, the first rotating shaft and stirring vane rotation of the present application can be driven by additional micro motor, can flexibly adjust rotating speed according to material viscosity, reaction demand, avoid the problem of insufficient stirring caused by relying on fluid thrust;While matching the variable-diameter screw rod of synchronous rotation, the synergistic effect of both, both realize full-flow passage gradient flow field regulation by the aid of screw rod variable-diameter structure, and break material agglomeration by stirring vane local stirring, multi-dimensional strengthen propargite raw material mixing, substantially improve reaction uniformity and reaction effect, at the same time, combined with detachable square-round joint, neither hinder flow passage cleaning operation, and cooperate with four-way pipe and three metering pumps to facilitate quantitative pumping propargite reaction material into reactor, help efficient chemical reaction.

Description

Technical Field

[0001] This utility model relates to the field of microchannel reactor equipment, and more specifically, to a microchannel reactor. Background Technology

[0002] Vibrio is an important thiocarbamate fumigant and nematicide widely used in agricultural production. Its traditional production process involves separately transporting raw materials such as 40% monomethylamine solution, carbon disulfide, and 32% liquid alkali from their respective elevated tanks to the Vibrio microchannel reactor. The reacted materials then enter the Vibrio preparation tank and undergo further processing to obtain the finished product.

[0003] A microchannel reactor is a reactor with narrow channels (typically ranging from several hundred micrometers to several millimeters in width) designed for mixing fluids and facilitating chemical reactions. The principle behind it is to utilize the high mass transfer rate and heat transfer efficiency of microchannels to enable interphase mass transfer and efficient chemical reactions of reactants within the microchannels.

[0004] Currently, in the use of microchannel reactors, the experimental liquid in the reaction channel tends to adhere to the inner wall of the reaction channel during the reaction. Microchannel reactors are not easy to disassemble, which makes cleaning the reaction channel inconvenient and can easily lead to uneven reaction during the reaction.

[0005] Announcement No. CN223233795U proposes a novel microchannel reactor. This device features a stirring structure, which can improve the uniformity of the experimental liquid reaction. The microchannel reactor has upper and lower shells that can be separated by an electric actuator, facilitating cleaning of the reaction channel. However, the rotation of the stirring blades depends entirely on the flow thrust of the experimental liquid. If the experimental liquid has high viscosity or a slow flow rate, the stirring blades may not reach the ideal rotation speed, leading to uneven stirring and affecting the reaction effect. Furthermore, the inlet and outlet of the channel formed by the docking of the upper and lower shells are both rectangular, which is inconvenient for feeding raw materials for the preparation of microbial precipitates, thus requiring improvement in feeding efficiency. Utility Model Content

[0006] The purpose of this invention is to solve the problems mentioned in the background art, and to propose a Weibamu reactor.

[0007] The technical solution adopted by this utility model to solve its technical problem is: A Vembue reactor includes a lower shell, a lower reaction channel, a lower heating and cooling channel, a sealing groove, an upper shell, an upper reaction channel, an upper heating and cooling channel, a sealing snap-fit ​​plate, a mounting plate, an electric push rod, a first fixing plate, a second fixing plate, an inlet pipe, a discharge pipe, a channel outlet, a channel inlet, and a double-lipped self-tightening helical spring-loaded skeleton oil seal. It also includes a first rotating shaft and a second rotating shaft. The first and second rotating shafts both penetrate the upper housing and are rotatably connected to the upper housing. The upper housing is fixedly equipped with skeleton oil seals in the through mounting holes corresponding to the first / second rotating shafts. The skeleton oil seals include rubber sealing bodies. The inner diameter of the rubber sealing body is interference-fitted with the outer circular surface of the corresponding first / second rotating shaft, and the outer diameter of the rubber sealing body is interference-fitted with the inner wall of the through mounting hole. The first rotating shaft is fixedly provided with stirring blades that cooperate with the upper reaction channel and the lower reaction channel in the area inside the upper shell, and a drive pulley is fixedly provided in the area outside the upper shell. The second rotating shaft is connected to a spiral rod that cooperates with the upper reaction channel and the lower reaction channel in the area inside the upper housing, and a driven pulley is fixed on the area outside the upper housing of the second rotating shaft, and the driving pulley and the driven pulley are driven by a tension belt and correspond one to one. The cover is fixed on the upper shell, and a miniature motor corresponding to and connected to the first rotating shaft is fixed inside the cover. A square-to-round connector adapted to its size is movably installed on the outside of the flow channel inlet after docking. The square-to-round connector is connected to one of the four-way pipes. The remaining three pipes of the four-way pipe are connected to a metering pump, and the three metering pumps are connected to the methylamine storage tank, the liquid alkali storage tank, and the carbon disulfide storage tank, respectively.

[0008] Furthermore, a fluororubber sealing strip is provided inside the sealing groove.

[0009] Furthermore, the stirring blade is provided with several protrusions or serrations.

[0010] Furthermore, a buffer pad is added between the piston rod of the electric push rod and the second fixed plate.

[0011] Furthermore, the screw rod includes multiple variable-diameter helical blades, with the diameter of the helical blades decreasing in a stepped manner from top to bottom.

[0012] Furthermore, the skeleton oil seal includes a metal reinforcing skeleton, a rubber sealing body, and a self-tightening helical spring. The metal reinforcing skeleton is embedded inside the rubber sealing body to maintain the shape of the oil seal. The self-tightening helical spring is nested in the groove at the root of the main lip of the rubber sealing body. A secondary lip is provided on the side of the rubber sealing body away from the main lip. The main lip of the skeleton oil seal faces the upper reaction flow channel side, and the secondary lip of the skeleton oil seal faces the outer space of the upper housing side.

[0013] Furthermore, the contact area between the main lip and the outer circular surface of the first / second rotating shaft is coated with a chemically resistant grease that is resistant to reactive media corrosion.

[0014] Furthermore, the interference fit between the inner diameter of the rubber seal body and the outer circular surface of the corresponding first rotating shaft / second rotating shaft is 0.1-0.3mm, and the interference fit between the outer diameter of the rubber seal body and the inner wall of the through mounting hole is 0.2-0.4mm.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. Significantly improved mixing uniformity and reaction efficiency. By adding a micro motor to drive the first rotating shaft and stirring blades, the rotation speed can be flexibly adjusted according to the material viscosity and reaction requirements, avoiding the problem of insufficient stirring caused by relying on fluid thrust. At the same time, in conjunction with the synchronously rotating variable diameter screw, the two work together to achieve full-channel gradient flow field control through the variable diameter structure of the screw, and break up material agglomeration through local stirring of the stirring blades, thereby strengthening the mixing of raw materials in multiple dimensions and greatly improving the reaction uniformity and reaction effect. 2. Reliable sealing performance ensures stable equipment operation. A skeleton oil seal is added at the installation points of the first and second rotating shafts and the upper shell to effectively prevent materials from overflowing from the joint gaps during mixing; a fluororubber sealing strip is added when the upper and lower shells are joined to further improve the overall sealing effect and ensure the stable use of the microchannel reactor. 3. Easy to disassemble and clean, adaptable to production needs. Using the upper and lower shell split structure from the comparative document, combined with a detachable square to round connector, the connection between the connector and the flow channel inlet can be quickly disconnected when the shell is split, without hindering the flow channel cleaning operation, thus meeting the cleaning requirements of the reaction flow channel after the preparation of the Eppendorf product. 4. Precise and controllable feeding, adaptable to raw material characteristics The rectangular flow channel inlet is adapted to the circular pipe by a square-to-round connector. With the help of a four-way pipe and three metering pumps, the raw materials for the preparation of methylamine, such as 40% monomethylamine solution, carbon disulfide, and 32% liquid alkali, can be accurately metered and pumped in, meeting the requirements for the accuracy of the reaction material ratio and facilitating efficient chemical reactions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the installation of the driving pulley and the driven pulley; Figure 3 This is a schematic diagram of a screw rod; Figure 4 This is a schematic diagram of the installation of a square-to-round connector; Figure label: 1. First rotating shaft; 11. Stirring blade; 12. Driving pulley; 2. Second rotating shaft; 21. Spiral rod; 22. Driven pulley; 3. Belt; 4. Cover; 5. Square to round connector; 6. Four-way pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments: like Figures 1 to 4 As shown, a VIA reactor includes a lower shell, a lower reaction channel, a lower heating and cooling channel, a sealing groove, an upper shell, an upper reaction channel, an upper heating and cooling channel, a sealing snap plate, a mounting plate, an electric push rod, a first fixing plate, a second fixing plate, an inlet pipe, an outlet pipe, a channel outlet, a channel inlet, and a skeleton oil seal with a double lip and a self-tightening helical spring. It also includes a first rotating shaft 1 and a second rotating shaft 2.

[0018] Both the first rotating shaft 1 and the second rotating shaft 2 penetrate the upper housing and are rotatably connected to it. A skeleton oil seal (existing technology and not shown in the diagram, its structure is not modified) is fixedly installed in the corresponding through mounting holes of the first rotating shaft 1 / second rotating shaft 2 in the upper housing. Specifically, the skeleton oil seal includes a metal reinforcing skeleton, a rubber sealing body, and a self-tightening helical spring: the metal reinforcing skeleton is embedded inside the rubber sealing body to maintain the shape of the oil seal; the self-tightening helical spring is nested in the groove at the root of the main lip of the rubber sealing body; a secondary lip is provided on the side of the rubber sealing body away from the main lip; wherein, the main lip faces the upper reaction channel, the secondary lip faces the external space of the upper housing, the inner diameter of the rubber sealing body is interference-fitted with the outer surface of the corresponding rotating shaft (interference amount 0.1-0.3mm), and the outer diameter of the rubber sealing body is interference-fitted with the inner wall of the through mounting hole (interference amount 0.2-0.4mm).

[0019] To further optimize sealing performance and service life, the contact area between the main lip and the outer surface of the shaft is coated with a grease resistant to reactive media corrosion, which enhances the sealing effect and reduces friction and wear between the lip and the shaft.

[0020] The first rotating shaft 1 is fixedly provided with stirring blades 11 that cooperate with the upper reaction channel and the lower reaction channel in the area inside the upper shell (for high viscosity liquids, protrusions or toothed structures can be added to the surface of the stirring blades 11 to enhance the shearing and mixing effect), and a drive pulley 12 is fixedly provided in the area outside the upper shell. The second rotating shaft 2 is connected to a spiral rod 21 adapted to the upper reaction channel and the lower reaction channel in the area inside the upper housing. A driven pulley 22 is fixed in the area outside the upper housing. The driving pulley 12 and the driven pulley 22 are driven one-to-one by a tension belt 3. A cover 4 is fixedly mounted on the upper housing, and a micro motor (not shown) is fixedly mounted inside the cover 4 and is connected to the first rotating shaft 1.

[0021] A square-to-round connector 5 of the appropriate size is movably installed on the outside of the flow channel inlet after docking. The square-to-round connector 5 is connected to one pipe of the four-way pipe 6. The other three pipes of the four-way pipe 6 are respectively connected to a metering pump. The three metering pumps are connected to the methylamine storage tank, the liquid alkali storage tank and the carbon disulfide storage tank (the metering pumps and each storage tank are not shown in the figure).

[0022] To improve the sealing effect of the upper and lower shells, a fluororubber sealing strip (not shown) is provided in the sealing groove. This sealing strip is set on the mating surface of the sealing snap plate and the sealing groove. It has high temperature resistance and wear resistance. It can compensate for the gap caused by thermal expansion and contraction through elastic deformation, and at the same time extend the service life of the sealing structure.

[0023] The screw 21 adopts a multi-segment variable diameter helical blade design, with the blade diameter decreasing in a stepwise manner from top to bottom. This structure can enhance the uniformity of material mixing, optimize mass and heat transfer efficiency, adapt to compact flow channel space, and enhance operational flexibility, thereby significantly improving reaction efficiency and product quality.

[0024] To distribute the force and reduce the risk of deformation of the electric actuator piston rod, a buffer pad or reinforcing rib is added between the electric actuator piston rod and the second fixed plate, and an anti-slip washer is added to the connection surface between the first fixed plate and the second fixed plate to prevent the bolts from loosening (the above optimized structure is not shown in the figure).

[0025] The workflow of this utility model is as follows: The structure is consistent with the prior art, adopting the features of the lower shell, lower reaction channel, lower heating and cooling channel, sealing groove, upper shell, upper reaction channel, upper heating and cooling channel, sealing snap plate, mounting plate, electric push rod, first fixing plate, second fixing plate, inlet pipe, outlet pipe, channel outlet and channel inlet disclosed in the prior art. The difference lies in the addition of an active drive mechanism: a micro motor connected to one end of the first rotating shaft 1 drives the stirring blade 11 to rotate, and the rotation speed can be adjusted according to the material viscosity and reaction requirements, avoiding insufficient stirring caused by relying on fluid thrust; at the same time, a variable diameter screw rod 21 is added, rotating synchronously with the stirring blade 11. The two work together through synchronous belt transmission—the variable diameter structure of the screw rod 21 achieves gradient flow field control throughout the flow channel, and the local stirring of the stirring blade 11 breaks up material agglomeration, enhancing mixing in multiple dimensions to improve the reaction effect of the micro-reaction. In addition, the skeleton oil seal at the mounting point of the rotating shaft and the upper shell can prevent material from overflowing from the joint gap, ensuring stable operation of the equipment; after the reaction channel is cleaned, the electric push rod drives the upper and lower shells to reconnect, at which time the fluororubber sealing strip in the sealing groove further improves the sealing effect; At the same time, a detachable square-to-round connector 5 is installed at the inlet of the flow channel. A rubber sealing ring (such as bolt connection and fixation) is added to the mating surface between its rectangular end and the inlet of the flow channel. This not only achieves the adaptation of the rectangular interface to the round pipe, but also ensures the integrity of the seal. Furthermore, the connection can be quickly disconnected when disassembled so as not to hinder the cleaning of the flow channel. After the square-to-round connector 5 is installed, it is connected to the four-way pipe 6. Three metering pumps are used to precisely pump 40% monomethylamine solution, carbon disulfide and 32% liquid alkali into the reactor respectively. The materials complete interphase mass transfer and efficient chemical reaction in the flow channel.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A Vembue reactor, comprising a lower shell, a lower reaction channel, a lower heating and cooling channel, a sealing groove, an upper shell, an upper reaction channel, an upper heating and cooling channel, a sealing snap-fit ​​plate, a mounting plate, an electric push rod, a first fixing plate, a second fixing plate, an inlet pipe, a discharge pipe, a channel outlet, a channel inlet, and a double-lipped self-tightening helical spring-loaded skeleton oil seal, characterized in that, It also includes a first rotating shaft (1) and a second rotating shaft (2). The first rotating shaft (1) and the second rotating shaft (2) both penetrate the upper housing and are rotatably connected to the upper housing. The upper housing is fixedly equipped with a skeleton oil seal in the through mounting hole corresponding to the first rotating shaft (1) / the second rotating shaft (2). The skeleton oil seal includes a rubber sealing body. The inner diameter of the rubber sealing body is interference-fitted with the outer circular surface of the corresponding first rotating shaft (1) / the second rotating shaft (2). The outer diameter of the rubber sealing body is interference-fitted with the inner wall of the through mounting hole. The first rotating shaft (1) is fixedly provided with stirring blades (11) that cooperate with the upper reaction channel and the lower reaction channel in the area inside the upper shell, and the first rotating shaft (1) is fixedly provided with a drive pulley (12) in the area outside the upper shell. The second rotating shaft (2) is connected to a spiral rod (21) that cooperates with the upper reaction channel and the lower reaction channel in the area inside the upper shell, and the second rotating shaft (2) is fixed to a driven pulley (22) in the area outside the upper shell, and the driving pulley (12) and the driven pulley (22) are driven by a belt (3) and correspond one to one. The cover (4) is fixed on the upper shell, and a micro motor corresponding to and connected to the first rotating shaft (1) is fixed inside the cover (4); A square-to-round connector (5) that is adapted to its size is movably installed on the outside of the flow channel inlet after docking. The square-to-round connector (5) is connected to one of the four-way pipes (6). The remaining three pipes of the four-way pipe (6) are connected to a metering pump, and the three metering pumps are connected to the methylamine storage tank, the liquid alkali storage tank and the carbon disulfide storage tank, respectively.

2. The Vibrio reactor according to claim 1, characterized in that, A fluororubber sealing strip is provided inside the sealing groove.

3. The Vibrio reactor according to claim 1, characterized in that, The stirring blade (11) is provided with several protrusions or serrations.

4. The Vibrio reactor according to claim 1, characterized in that, A buffer pad is added between the piston rod of the electric push rod and the second fixed plate.

5. The Vibrio reactor according to claim 1, characterized in that, The helical rod (21) includes multiple variable diameter helical blades, with the diameter of the helical blades decreasing in a stepwise manner from top to bottom.

6. The Vibrio reactor according to claim 1, characterized in that, The skeleton oil seal includes a metal reinforcing skeleton, a rubber sealing body, and a self-tightening helical spring. The metal reinforcing skeleton is embedded inside the rubber sealing body to maintain the shape of the oil seal. The self-tightening helical spring is nested in the groove at the root of the main lip of the rubber sealing body. The rubber sealing body has a secondary lip on the side away from the main lip. The main lip of the skeleton oil seal faces the upper reaction channel side, and the secondary lip of the skeleton oil seal faces the outer space of the upper housing side.

7. A Vibrio reactor according to claim 6, characterized in that, The contact area between the main lip and the outer circular surface of the first rotating shaft (1) / second rotating shaft (2) is coated with a chemically resistant grease that is resistant to reactive media corrosion.

8. The Vibrio reactor according to claim 1, characterized in that, The interference fit between the inner diameter of the rubber seal body and the outer surface of the corresponding first rotating shaft (1) / second rotating shaft (2) is 0.1-0.3mm, and the interference fit between the outer diameter of the rubber seal body and the inner wall of the through mounting hole is 0.2-0.4mm.

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