Efficient mixing device for materials in benzohydroxamic acid reaction kettle

Abstract

The invention discloses an efficient mixing device for materials in a benzohydroxamic acid reaction kettle, and belongs to the technical field of material mixing reaction, the efficient mixing device comprises a supporting seat and a kettle body connected to the supporting seat through a supporting frame, the upper end of the kettle body is provided with a feeding port, the lower end of the kettle body is provided with a discharging port, and the discharging port is provided with a valve for controlling opening and closing of the discharging port. A servo motor is mounted at the upper end of the kettle body through a motor frame, and a shaft tube is mounted at the driving end of the servo motor. Transverse stirring can be achieved through synchronous rotation of the shaft pipe and the stirring pipe, the radius of transverse stirring can be changed, the stirring efficiency can be improved, in addition, longitudinal stirring can be achieved through rotation of the air dispersing impeller, the stirring efficiency can be further improved, and the stirring effect is improved. Meanwhile, inert gas with a certain temperature can be conveyed into the kettle body in the material stirring process, so that the reaction temperature in the kettle body can be changed, and the efficiency and the effect of the synthetic reaction of the benzohydroxamic acid can be improved.

Description

Technical Field

[0001] This invention relates to the field of material mixing and reaction technology, specifically to a high-efficiency material mixing device for a benzyl hydroxamic acid reactor. Background Technology

[0002] The benzohydroxyxamic acid reactor is mainly used for the synthesis reaction of benzohydroxyxamic acid. It is generally equipped with a stirring structure to improve the mixing efficiency of materials in the reactor, so as to carry out the reaction more efficiently. Existing mixing devices for benzohydroxyxamic acid reaction vessels have poor stirring efficiency during use. For example, the material mixing and stirring reaction vessel disclosed in CN217989318U only has a rotatable stirring structure to improve the uniformity of stirring. However, when stirring materials, it can only stir horizontally and cannot stir vertically, which leads to a long time required to stir the materials evenly, resulting in low stirring efficiency. In addition, the existing synthesis reaction of benzohydroxyxamic acid requires stable control. Conventional reaction vessel stirring devices cannot control the temperature of the materials, which can easily lead to a decrease in the efficiency and effectiveness of the synthesis reaction of benzohydroxyxamic acid, which is not conducive to the synthesis of benzohydroxyxamic acid. Therefore, a highly efficient mixing device for materials inside the benzo[a]hydroxyxamic acid reactor is needed to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a high-efficiency mixing device for materials in a benzohydroxyxamic acid reactor, in order to solve the problems mentioned in the background art, such as poor stirring efficiency and inability to control the reaction temperature in existing benzohydroxyxamic acid reactor mixing devices.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A high-efficiency mixing device for materials in a benzoxoxime acid reactor includes a support base and a reactor body connected to it via a support frame. The reactor body has an inlet at its upper end and an outlet at its lower end, with a valve installed on the outlet for controlling its opening and closing. A servo motor is mounted on the upper end of the reactor body via a motor frame, and a shaft tube is mounted on the drive end of the servo motor. The lower end of the shaft tube extends into the interior of the reactor body, and the reactor body and the shaft tube are connected by a sealed bearing. Stirring tubes are evenly spaced on the portion of the shaft tube extending into the reactor body, and a reciprocating longitudinal stirring mechanism is installed on each stirring tube. A temperature control mechanism is also provided on each stirring tube, comprising a gas storage bottle fixedly mounted on the upper surface of the support base and a temperature control device. The gas storage bottle stores inert gas. A control panel is mounted on the support frame, and both the servo motor and the temperature control device are electrically connected to the control panel.

[0005] Preferably, the shaft tube is connected to the stirring tube in a continuous manner, and the inner diameter of the shaft tube is larger than the inner diameter of the stirring tube.

[0006] Preferably, the reciprocating longitudinal stirring mechanism includes a rack plate installed in each stirring tube, with both ends of the rack plate passing through the two ends of the corresponding stirring tube. All the rack plates are fixedly connected to the connecting rod on the same side at the same end, and a folding tube is provided between the connecting rod and the end of the stirring tube closest to it, with the folding tube sleeved on the outside of the corresponding connecting rod.

[0007] Preferably, the reciprocating longitudinal stirring mechanism further includes a pressure guide block fixedly connected to the inside of the vessel body, and the cross section of the pressure guide block is an isosceles triangle, and the side of the connecting rod near the inside of the vessel body is a smooth hemispherical surface, so as to facilitate smooth contact between the connecting rod and the pressure guide block.

[0008] Preferably, the temperature control mechanism further includes a gas supply pipe between the gas storage cylinder and the temperature control device, and the lower end of a one-way gas guide pipe is connected to the temperature control device. A gas storage chamber is provided at the inner top of the vessel body, and the gas storage chamber is penetrated by a shaft tube. The shaft tube and the gas storage chamber are also connected by a sealed bearing. The upper end of a one-way gas guide pipe is connected through the gas storage chamber. A one-way gas dissipation hole is provided at the top of the vessel body, penetrating its inner and outer sides. The gas storage chamber is connected to the shaft tube through the gas guide hole.

[0009] Preferably, the temperature control mechanism further includes drive shafts evenly spaced on the stirring tube, with both ends of the drive shafts penetrating the stirring tube and connected to the stirring tube by sealed bearings. Both ends of the drive shafts are equipped with air-dispersing impellers, and a drive gear is keyed to the middle of the drive shaft. The drive gear meshes with a corresponding rack plate. The stirring tube is also provided with one-way exhaust holes, and the number of sets of one-way exhaust holes is the same as the number of drive shafts. Each set of one-way exhaust holes is set at an equal angle to the axis of the drive shaft.

[0010] Preferably, the temperature control mechanism further includes piston plates disposed on each rack plate, and the piston plates are seamlessly slidably connected to the inner side of the corresponding stirring tube.

[0011] Preferably, the lower end of the rack plate is hemispherical, and the lower end of the rack plate is slidably connected to the inner side of the corresponding stirring tube.

[0012] Preferably, the stirring tube has a drive shaft on only one side of its vertical line, and the drive shafts on adjacent stirring tubes are respectively located on both sides of the vertical line of the stirring tube.

[0013] Preferably, the rack plate is provided with teeth only at the location corresponding to the drive shaft, and the piston plate is provided at the location of the rack plate where no teeth are provided.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The efficient mixing device for materials inside the benzoyl hydroxamic acid reactor can not only achieve transverse stirring by synchronously rotating the shaft tube and the stirring tube, but also change the radius of transverse stirring, thereby helping to improve the stirring efficiency. In addition, it can also achieve longitudinal stirring by rotating the gas diffuser impeller, which is conducive to further improving the stirring efficiency. At the same time, during the stirring process, an inert gas at a certain temperature can be introduced into the reactor, thereby changing the reaction temperature inside the reactor, which helps to improve the efficiency and effect of the benzoyl hydroxamic acid synthesis reaction. 1. The pressure guide block allows the connecting rod to reciprocate as the stirring tube rotates with the shaft tube, thereby changing the stirring radius and improving the stirring efficiency. In addition, the reciprocating movement of the connecting rod drives the rack plate to move synchronously, which in turn drives the air diffuser impeller to rotate at high speed to achieve longitudinal stirring. The simultaneous occurrence of transverse and longitudinal stirring helps to improve the mixing efficiency of materials in the reactor. 2. When the rack plate moves, the piston plate on it also moves synchronously. In conjunction with the one-way exhaust port, one-way gas guide pipe, and one-way gas diffuser, the inert gas in the gas storage bottle can be drawn into the temperature control device in one direction. After the temperature control device changes the temperature of the inert gas, it is transported to the gas storage chamber through the one-way gas guide pipe, and then enters the shaft tube through the gas guide hole. After passing through the stirring tube, it is ejected from the one-way exhaust port. At the moment the inert gas is ejected, large bubbles are formed. During the process, due to the high-speed rotation of the gas diffuser impeller, the large bubbles are cut into countless small bubbles, which greatly increases the surface area of ​​contact between the inert gas and the material. This allows the inert gas to quickly transfer its temperature to the material, so as to change the reaction temperature and improve the efficiency and effect of the benzohydroxyxamic acid synthesis reaction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a schematic diagram of the main cross-sectional structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of point A in the middle; Figure 5 This is a schematic diagram of the side sectional structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram of point B; Figure 7 For the present invention Figure 5 Enlarged structural diagram of point C; Figure 8 This is a schematic diagram of the connection structure between the shaft tube and the connecting rod of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram of point D; Figure 10 This is a schematic diagram of the connection structure between the connecting rod and the rack plate of the present invention; Figure 11 This is a top-section structural schematic diagram of the present invention.

[0016] In the diagram: 1. Support base; 2. Support frame; 3. Kettle body; 4. Motor frame; 5. Servo motor; 6. Feed inlet; 7. Gas storage cylinder; 8. Temperature control device; 9. Discharge outlet; 10. Control panel; 11. One-way gas guide pipe; 12. Shaft tube; 13. Stirring tube; 14. Connecting rod; 15. Gas storage chamber; 16. Gas guide hole; 17. One-way exhaust hole; 18. Drive shaft; 19. Dispersing impeller; 20. Drive gear; 21. Rack plate; 22. Folded tube; 23. Pressure guide block; 24. Gas delivery pipe; 25. Piston plate; 26. One-way gas dispersion hole. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0018] Please see Figures 1-11 The present invention provides the following technical solution: Example 1: To address the problem of poor mixing efficiency in conventional benzo[a]hydroxamic acid reactors due to the use of only a transverse stirring structure in the material mixing device, the following technical solution is provided: A high-efficiency mixing device for benzo[a]hydroxamic acid reactors includes a support base 1 and a reactor body 3 connected to it via a support frame 2. The upper end of the reactor body 3 has a feed inlet 6, and the lower end has a discharge outlet 9. A valve for controlling the opening and closing of the discharge outlet 9 is installed. A servo motor 5 is mounted on the upper end of the reactor body 3 via a motor frame 4, and a shaft tube 12 is mounted on the drive end of the servo motor 5. The lower end of the shaft tube 12 extends into the interior of the reactor body 3, and the reactor body 3 and the shaft tube 12 are connected by a sealed bearing. Stirring tubes 13 are evenly spaced on the portion of the shaft tube 12 extending into the reactor body 3, and a reciprocating longitudinal stirring mechanism is provided on the stirring tubes 13.

[0019] The shaft tube 12 is connected to the stirring tube 13, and the inner diameter of the shaft tube 12 is larger than the inner diameter of the stirring tube 13. The reciprocating longitudinal stirring mechanism includes a rack plate 21 installed in each stirring tube 13, and the two ends of the rack plate 21 pass through the two ends of the corresponding stirring tube 13. All rack plates 21 are fixedly connected to the connecting rod 14 on the same side at the same end. A folded tube 22 is provided between the connecting rod 14 and the end near its stirring tube 13. The folded tube 22 is sleeved on the outside of the corresponding connecting rod 14. The reciprocating longitudinal stirring mechanism also includes a pressure guide block 23 fixedly connected to the inside of the vessel body 3. The cross section of the pressure guide block 23 is an isosceles triangle. The side of the connecting rod 14 near the inside of the vessel body 3 is a smooth hemispherical surface, which facilitates smooth contact between the connecting rod 14 and the pressure guide block 23.

[0020] according to Figure 3 , Figure 5 and Figure 11 The liquid material for synthesizing benzohydroxyxamic acid is injected into the reactor body 3 through the feed port 6, and then the feed port 6 is sealed. Start the servo motor 5, which drives the shaft tube 12 to rotate, and the stirring tube 13 rotates synchronously with the shaft tube 12. During the rotation of the stirring tube 13, the connecting rod 14 on it will intermittently contact the pressure guide block 23. The pressure of the pressure guide block 23 will cause the connecting rod 14 to move back and forth, thereby changing the stirring range of the transverse stirring structure composed of the shaft tube 12, the stirring tube 13 and the connecting rod 14, which is beneficial to improving the stirring efficiency. In addition, during the reciprocating movement of the connecting rod 14, the rack plate 21 drives the air-dispersing impeller 19 to rotate at high speed, which can then longitudinally stir the liquid material, thereby further improving the stirring efficiency.

[0021] Example 2: To solve the problem that the material mixing device in the previous benzoxoxime acid reactor could not change the reaction temperature, the following technical solution is provided. Specifically, the stirring tube 13 is also equipped with a temperature control mechanism, which includes a gas storage bottle 7 and a temperature control device 8 fixedly installed on the upper surface of the support base 1. The gas storage bottle 7 stores inert gas, and a control panel 10 is installed on the support frame 2. The servo motor 5 and the temperature control device 8 are both electrically connected to the control panel 10.

[0022] The temperature control mechanism also includes a gas supply pipe 24 between the gas storage cylinder 7 and the temperature control device 8, and the lower end of a one-way gas guide pipe 11 is connected to the temperature control device 8. A gas storage chamber 15 is provided at the top inner end of the vessel body 3, and the gas storage chamber 15 is penetrated by a shaft tube 12. The shaft tube 12 and the gas storage chamber 15 are also connected by a sealed bearing. The upper end of the one-way gas guide pipe 11 is connected through the gas storage chamber 15. A one-way gas diffuser hole 26 is provided at the top of the vessel body 3, penetrating both its inner and outer sides. The gas storage chamber 15 is connected to the shaft tube 12 through a gas guide hole 16. The temperature control mechanism also includes a drive shaft 18 evenly spaced on the stirring tube 13. Both ends of the drive shaft 18 penetrate the stirring tube 13, and the drive shaft 18 and the stirring tube 13 are also connected by a sealed bearing. A gas diffuser impeller 19 is installed at both ends of the drive shaft 18, and a drive gear 2 is keyed to the middle of the drive shaft 18. 0. The transmission gear 20 meshes with the corresponding rack plate 21. The stirring tube 13 is also provided with a one-way exhaust hole 17, and the number of sets of one-way exhaust holes 17 is the same as the number of transmission shafts 18. Each set of one-way exhaust holes 17 is set at an equal angle with respect to the axis of the transmission shaft 18. The temperature control mechanism also includes a piston plate 25 provided on each rack plate 21, and the piston plate 25 is seamlessly slidably connected to the inner side of the corresponding stirring tube 13. The lower end of the rack plate 21 is hemispherical, and the lower end of the rack plate 21 is slidably connected to the inner side of the corresponding stirring tube 13. The stirring tube 13 is provided with a transmission shaft 18 only on one side of its vertical line, and the transmission shafts 18 provided on adjacent stirring tubes 13 are respectively located on both sides of the vertical line of the stirring tube 13. The rack plate 21 is provided with teeth only at the part corresponding to the transmission shaft 18, and the piston plate 25 is provided at the part of the rack plate 21 where no teeth are provided.

[0023] according to Figure 3-10 During the reciprocating movement of the connecting rod 14, the rack plate 21 is driven to reciprocate synchronously. During the reciprocating movement, the rack plate 21 can not only drive the transmission shaft 18 to rotate at high speed through the transmission gear 20, but also transport the inert gas in the gas storage bottle 7 to the one-way exhaust port 17 through the piston plate 25 (the gas storage bottle 7 is existing technology, and after the gas supply pipe 24 transports the inert gas to the temperature control device 8, no negative pressure will be formed in the gas storage bottle 7), so as to form larger bubbles, which are then cut by the high-speed rotation of the gas diffuser impeller 19 driven by the transmission shaft 18, forming a large number of tiny bubbles, thereby greatly increasing the contact area between the inert gas and the liquid material, which helps the inert gas change the reaction temperature; The inert gas delivery process is as follows: When the rack plate 21 moves and carries the piston plate 25 connected to it away from the axis of the shaft tube 12 (a negative pressure is generated in the container formed by the shaft tube 12 and the stirring tube 13), the inert gas enters the container formed by the shaft tube 12 and the stirring tube 13 through the one-way gas guide pipe 11 and the gas guide hole 16. When the rack plate 21 moves in the reverse direction, carrying the piston plate 25 connected to it close to the axis of the shaft tube 12 (positive pressure is generated in the container formed by the shaft tube 12 and the stirring tube 13), the inert gas is discharged through the one-way exhaust port 17. The inert gas mainly relies on the characteristics of the one-way exhaust port 17 and the one-way gas guide pipe 11 to exhaust gas without intake, as well as the principle of positive or negative pressure generated by the piston plate 25 moving in the stirring tube 13. In the above process, the inert gas will change its temperature by passing through the temperature control device 8 (the temperature control device 8 can be a combined heating and cooling machine, a heating and cooling oven, or a semiconductor heating and cooling stage), so that it can quickly change the temperature of the liquid material after contact with it, that is, it can quickly change the reaction temperature, which is beneficial to improving the efficiency and effect of the benzohydroxyoxime acid synthesis reaction.

[0024] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency mixing device for materials in a benzyl hydroxamic acid reactor, comprising a support base (1) and a reactor body (3) connected thereto via a support frame (2), characterized in that: The upper end of the vessel body (3) is provided with a feed inlet (6), and the lower end of the vessel body (3) is provided with a discharge outlet (9). A valve for controlling its opening and closing is installed on the discharge outlet (9). A servo motor (5) is installed on the upper end of the vessel body (3) via a motor frame (4), and a shaft tube (12) is installed on the drive end of the servo motor (5). The lower end of the shaft tube (12) extends into the interior of the vessel body (3), and the vessel body (3) and the shaft tube (12) are connected by a sealed bearing. The shaft tube (12) extends... Stirring tubes (13) are evenly spaced on the part inside the vessel body (3), and a reciprocating longitudinal stirring mechanism is provided on the stirring tubes (13). The stirring tubes (13) are also provided with a temperature control mechanism, which includes a gas storage bottle (7) and a temperature control device (8) fixedly installed on the upper surface of the support base (1). The gas storage bottle (7) stores inert gas. A control panel (10) is installed on the support frame (2), and the servo motor (5) and the temperature control device (8) are electrically connected to the control panel (10).

2. The high-efficiency mixing device for materials in a benzyl hydroxamic acid reactor according to claim 1, characterized in that: The shaft tube (12) is connected to the stirring tube (13) through, and the inner diameter of the shaft tube (12) is larger than the inner diameter of the stirring tube (13).

3. The high-efficiency mixing device for materials in a benzyl hydroxamic acid reactor according to claim 2, characterized in that: The reciprocating longitudinal stirring mechanism includes a rack plate (21) installed in each stirring tube (13), and the two ends of the rack plate (21) pass through the two ends of the corresponding stirring tube (13). All the rack plates (21) are fixedly connected to the connecting rod (14) on the same side at the same end. A folded tube (22) is provided between the connecting rod (14) and the end near its stirring tube (13). The folded tube (22) is sleeved on the outside of the corresponding connecting rod (14).

4. The high-efficiency mixing device for materials in a benzyl hydroxamic acid reactor according to claim 3, characterized in that: The reciprocating longitudinal stirring mechanism also includes a pressure guide block (23) fixedly connected to the inner side of the vessel body (3), and the cross section of the pressure guide block (23) is an isosceles triangle. The side of the connecting rod (14) near the inner side of the vessel body (3) is a smooth hemispherical surface, which facilitates smooth contact between the connecting rod (14) and the pressure guide block (23).

5. The high-efficiency mixing device for materials in a benzyl hydroxamic acid reactor according to claim 4, characterized in that: The temperature control mechanism also includes a gas supply pipe (24) between the gas storage cylinder (7) and the temperature control device (8), and the lower end of the one-way gas guide pipe (11) is connected to the temperature control device (8). The inner top of the vessel body (3) is provided with a gas storage chamber (15), and the gas storage chamber (15) is penetrated by the shaft tube (12). The shaft tube (12) and the gas storage chamber (15) are also connected by a sealed bearing. The upper end of the one-way gas guide pipe (11) is connected through the gas storage chamber (15). The top of the vessel body (3) is provided with a one-way gas dispersing hole (26) that penetrates its inner and outer sides. The gas storage chamber (15) is connected through the gas guide hole (16) to the shaft tube (12).

6. The high-efficiency mixing device for materials in a benzyl hydroxamic acid reactor according to claim 5, characterized in that: The temperature control mechanism also includes a transmission shaft (18) evenly spaced on the stirring tube (13). Both ends of the transmission shaft (18) pass through the stirring tube (13). The transmission shaft (18) and the stirring tube (13) are also connected by a sealed bearing. Both ends of the transmission shaft (18) are equipped with a diffuser impeller (19). A transmission gear (20) is keyed to the middle of the transmission shaft (18). The transmission gear (20) meshes with the corresponding rack plate (21). The stirring tube (13) is also provided with a one-way exhaust hole (17). The number of sets of one-way exhaust holes (17) is the same as the number of transmission shafts (18). Each set of one-way exhaust holes (17) is set at an equal angle to the axis of the transmission shaft (18).

7. The high-efficiency mixing device for materials in a benzyl hydroxamic acid reactor according to claim 6, characterized in that: The temperature control mechanism also includes a piston plate (25) provided on each rack plate (21), and the piston plate (25) is seamlessly slidably connected to the inner side of the corresponding stirring tube (13).

8. The high-efficiency mixing device for materials in a benzyl hydroxamic acid reactor according to claim 7, characterized in that: The lower end of the rack plate (21) is hemispherical, and the lower end of the rack plate (21) is slidably connected to the inner side of the corresponding stirring tube (13).

9. The high-efficiency mixing device for materials in a benzyl hydroxamic acid reactor according to claim 8, characterized in that: The stirring tube (13) has a drive shaft (18) on only one side of its vertical line, and the drive shafts (18) on adjacent stirring tubes (13) are respectively located on both sides of the vertical line of the stirring tube (13).

10. The high-efficiency mixing device for materials in a benzyl hydroxamic acid reactor according to claim 9, characterized in that: The rack plate (21) is provided with teeth only at the location corresponding to the drive shaft (18), and the piston plate (25) is provided at the location of the rack plate (21) where no teeth are provided.

Images