Stirring device of catalyst for preparing carbon nano tube
By designing a three-way nozzle and gear system in the agitating device of carbon nanotube catalyst, the impact and adhesion of the flushing structure on the rotation of the stirring rod is solved, and more efficient cleaning of the inner wall of the stirring tank and the accuracy of the catalyst ratio are achieved, improving the accuracy of the inner wall of the stirring tank, thereby improving the The activity and selectivity of the catalyst are achieved.
Patent Information
- Application Number
- CN202323464081.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-19
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-19
AI Technical Summary
During the production process of existing carbon nanotube catalysts, the embedded flushing structure will affect the rotation of the stirring rod, and the water inlet pipe on the flushing structure will easily stick to the catalyst, resulting in inaccurate ratio of powder and slurry, affecting the activity of the catalyst and Selective.
A stirring device including a three-way nozzle, threaded pipe and folded pipe is designed. The three-way nozzle is driven by a water pump and a lifting motor to flush the inner wall and stirring shaft of the mixing tank, and after flushing, the threaded pipe and folded pipe are lifted. , avoid the impact on the rotation of the agitating shaft, and realize the convenient shrinkage of the three-way nozzle through the gear system.
It effectively improves the cleaning effect of the inner wall of the stirring tank, avoids the impact of the flushing structure on the stirring shaft, ensures the accuracy of the ratio of powder and slurry, and improves the activity and selectivity of the catalyst.
Smart Images
Figure CN222151809U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of catalyst stirring, and in particular relates to a stirring device for preparing a catalyst of carbon nanotubes. Background Art
[0002] Carbon nanotubes (CNT) have perfect graphite structure and saturated surface atomic valence bonds. They are chemically very stable and are carbon materials with nano-scale seamless tubular structures. They have excellent properties such as high strength, light weight, stable performance, softness, flexibility, and large specific surface area. The methods for preparing carbon nanotubes include graphite arc method, chemical vapor deposition method (CVD), laser evaporation method, template method, etc. Among them, CVD method is a method with relatively simple preparation process and equipment, suitable for large-scale production, and easy to achieve industrialization. The key to preparing carbon nanotubes by CVD method is the preparation of catalysts. The preparation of catalysts with high catalytic activity and high selectivity is the key to producing high-purity carbon nanotubes. In the existing production process of carbon nanotube catalysts, powder and slurry need to be reacted and stirred and mixed at the same time. Due to the high viscosity of the slurry, a large amount of slurry will remain on the kettle wall after stirring, and the kettle wall also contains undissolved powder, resulting in the inability to accurately confirm the ratio of powder and slurry.
[0003] The patent with application number 201821964930.9 discloses a stirring device for preparing carbon nanotube catalysts, which belongs to the field of carbon nanotube catalyst preparation. The utility model solves the problem that the existing stirring kettle produces wall hanging during the stirring process, which affects the ratio of powder and slurry, and then affects the activity and selectivity of the prepared catalyst. The stirring kettle cover is provided with a feed inlet and a through hole, and the through holes are symmetrically distributed on the stirring kettle cover with the center of the stirring kettle cover as the symmetry center. The flushing mechanism passes through the stirring kettle cover and is inserted and installed above the inside of the stirring kettle body. The flushing mechanism includes a pressure pump and a booster nozzle.
[0004] Although the above technical solution flushes and cleans the residual catalyst on the stirring rod and the cylinder wall through the embedded flushing structure, the embedded flushing structure will affect the rotation of the stirring rod during the stirring process, and the catalyst will also stick to the water inlet pipe on the flushing structure. Utility Model Content
[0005] (1) Technical issues to be solved
[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a stirring device for preparing a catalyst for carbon nanotubes. The stirring device for preparing a catalyst for carbon nanotubes is intended to solve the problem in the prior art that an embedded flushing structure during the stirring process affects the rotation of the stirring rod, and the catalyst may also stick to the water inlet pipe on the flushing structure.
[0007] (2) Technical solution
[0008] In order to solve the above technical problems, the utility model provides a stirring device for preparing a catalyst for carbon nanotubes, which comprises a stirring tank and a top cover embedded and fixed at the top of the stirring tank, a U-shaped fastening frame is fixed to the top of the top cover, and driving tubes are rotatably inserted on both sides of the top surface of the top cover, wherein a three-way nozzle is arranged above the top cover, and threaded tubes are threadedly inserted in the two driving tubes, both sides of the bottom end surface of the three-way nozzle are fixedly inserted in the threaded tubes and axially fixed to the threaded tubes, and the bottom end of the three-way nozzle is embedded in the stirring tank, wherein the top of the three-way nozzle is connected to a folding tube fixed to the fastening frame.
[0009] When the stirring device for preparing the catalyst of carbon nanotubes of the technical solution is used, a three-way nozzle is installed at the top of the top cover, and the water pump at the top of the fastening frame flushes the inner wall of the stirring tank and the material on the stirring shaft through the water inlet pipe. After flushing, the driving pipe is rotated to drive the threaded pipe and the three-way nozzle to rise and fall during the rotation, and drive the folding pipe to move synchronously during the lifting process. The three-way nozzle is retracted to the top of the stirring tank when not in use, thereby avoiding the three-way nozzle from affecting the rotation of the stirring shaft inside the stirring tank, and improving the cleaning effect of the inner wall of the stirring tank after stirring; a lifting motor is fixedly installed at the bottom end of the top cover, and the lifting motor drives the driving shaft to rotate synchronously with the second gear during the rotation process. The second gear drives the two rotating tubes to rotate synchronously through the first gear during the rotation process. Since the threads of the inner walls of the two rotating tubes are in opposite directions, the bottom ends of the three-way nozzle are synchronously lifted and lowered when the two rotating tubes rotate synchronously in different directions, which is convenient for driving the three-way nozzle to rise and fall at the top of the stirring tank, and improves the convenience of retracting the three-way nozzle.
[0010] Preferably, a support ring is fixedly sleeved on the bottom end of the stirring tank, and legs are fixedly mounted on the bottom end of the support ring in a circular array.
[0011] Furthermore, handles are fixedly mounted on both sides of the top surface of the top cover, and a stirring motor is mounted on the bottom end of the stirring tank.
[0012] Furthermore, a discharge pipe is fixedly connected to the bottom end of the mixing tank, and a control valve is provided on the discharge pipe.
[0013] Furthermore, a lifting motor is embedded and fixed at the top end of the top cover, and a driving shaft is installed at the top end of the lifting motor.
[0014] Furthermore, the top end of the driving shaft passes through the top cover and is fixedly sleeved with a second gear, the thread directions of the inner walls of the two driving tubes are opposite, and the top ends of the two driving tubes are fixedly sleeved with a first gear meshing with the second gear.
[0015] Furthermore, a water pump is fixedly installed on the top of the fastening frame, the bottom end of the water pump is connected to the folding pipe, and a water inlet pipe is fixedly installed on the top of the water pump.
[0016] (3) Beneficial effects
[0017] Compared with the prior art, the beneficial effects of the utility model are:
[0018] 1. The utility model installs a three-way nozzle on the top of the top cover, and the water pump on the top of the fastening frame flushes the inner wall of the mixing tank and the materials on the mixing shaft through the water inlet pipe. After flushing, the driving pipe is rotated to drive the threaded pipe and the three-way nozzle to rise and fall during the rotation, and drives the folding pipe to move synchronously during the lifting process. The three-way nozzle is retracted to the top of the mixing tank when not in use, thereby avoiding the three-way nozzle from affecting the rotation of the mixing shaft inside the mixing tank, and improving the cleaning effect of the inner wall of the mixing tank after stirring.
[0019] 2. A lifting motor is fixedly installed at the bottom end of the top cover. During the rotation of the lifting motor, the driving shaft drives the second gear to rotate synchronously. During the rotation of the second gear, the two rotating tubes are driven to rotate synchronously through the first gear. Since the threads of the inner walls of the two rotating tubes are in opposite directions, the two rotating tubes synchronously rotate in different directions, so that the bottom ends of the three-way nozzle are synchronously lifted and lowered, which is convenient for driving the three-way nozzle to lift and lower at the top of the mixing tank, thereby improving the convenience of contracting the three-way nozzle. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0021] Figure 1 It is a schematic diagram of the structure of the utility model;
[0022] Figure 2 This is a schematic diagram of the structure of the stirring tank of the utility model;
[0023] Figure 3 For the utility model Figure 1 A schematic diagram of the structure enlargement in the middle;
[0024] Figure 4 This is a schematic diagram of the second gear structure of the utility model.
[0025] The markings in the attached drawings are: 1. mixing tank; 2. support ring; 3. support leg; 4. three-way nozzle; 5. fastening frame; 6. water inlet pipe; 7. folding pipe; 8. handle; 9. top cover; 10. mixing motor; 11. discharge pipe; 12. threaded pipe; 13. first gear; 14. drive pipe; 15. second gear; 16. lifting motor; 17. drive shaft; 18. water pump. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] This specific embodiment is a stirring device for preparing a catalyst for carbon nanotubes, and its structural schematic diagram is shown as follows: Figure 1 As shown, the stirring device for preparing the catalyst of carbon nanotubes comprises a stirring tank 1 and a top cover 9 embedded and fixed at the top of the stirring tank 1, a fastening frame 5 with a U-shaped structure is fixed to the top of the top cover 9, and driving tubes 14 are rotatably inserted on both sides of the top surface of the top cover 9, wherein a three-way nozzle 4 is arranged above the top cover 9, and threaded tubes 12 are threadedly inserted in the two driving tubes 14, and both sides of the bottom end surface of the three-way nozzle 4 are fixedly inserted in the threaded tube 12 and axially fixed with the threaded tube 12, and the bottom end of the three-way nozzle 4 is embedded in the stirring tank 1, wherein The top of the three-way nozzle 4 is connected to a folding tube 7 fixed to the fastening frame 5. The water pump 18 at the top of the fastening frame 5 allows the three-way nozzle 4 to flush the inner wall of the mixing tank 1 and the materials on the mixing shaft through the water inlet pipe 6. After flushing, the driving tube 14 is rotated to drive the threaded tube 12 and the three-way nozzle 4 to rise and fall during the rotation, and drive the folding tube 7 to move synchronously during the lifting process. The three-way nozzle 4 is retracted to the top of the mixing tank 1 when not in use, thereby avoiding the three-way nozzle 4 from affecting the rotation of the mixing shaft inside the mixing tank 1.
[0028] like Figure 1 and Figure 2 As shown, a support ring 2 is fixedly sleeved on the bottom end of the mixing tank 1, and legs 3 are fixedly installed in a circular array on the bottom end of the support ring 2, and handles 8 are fixedly installed on both sides of the top surface of the top cover 9, a stirring motor 10 is installed on the bottom end of the mixing tank 1, and a stirring rod embedded in the mixing tank 1 is installed on the top end of the stirring motor 10, and a discharge pipe 11 is fixedly connected to the bottom end of the mixing tank 1, and a control valve is provided on the discharge pipe 11. After the control valve is opened, the stirred material is discharged from the discharge pipe 11.
[0029] like Figure 1 and Figure 2 As shown, a lifting motor 16 is embedded and fixed at the top of the top cover 9, and a driving shaft 17 is installed at the top of the lifting motor 16. The top of the driving shaft 17 passes through the top cover 9 and is fixedly sleeved with a second gear 15. The threads of the inner walls of the two driving tubes 14 are in opposite directions, and the tops of the two driving tubes 14 are fixedly sleeved with a first gear 13 meshing with the second gear 15. A water pump 18 is fixedly installed at the top of the fastening frame 5, and the bottom end of the water pump 18 is connected to the folding tube 7, and the top of the water pump 18 is fixedly installed with a water inlet pipe 6. During the rotation of the lifting motor, the driving shaft 17 drives the second gear 15 to rotate synchronously, and during the rotation of the second gear 15, the two rotating tubes are driven to rotate synchronously through the first gear 13. Since the threads of the inner walls of the two rotating tubes are in opposite directions, the two rotating tubes cause the bottom ends of the three-way nozzle 4 to rise and fall synchronously when they rotate synchronously in different directions, so as to drive the three-way nozzle 4 to rise and fall at the top of the mixing tank 1.
[0030] The stirring device for preparing the catalyst of carbon nanotubes has a stirring tank 1 as shown in the structural diagram Figure 2 As shown, its Figure 1 The enlarged schematic diagram of the structure at A is as follows Figure 3 As shown, the structural diagram of the second gear 15 is as shown Figure 4 shown.
[0031] Working principle: when cleaning the inner wall of the mixing tank 1, after opening the control valve and water pump 18 on the discharge pipe 11, the water pump 18 at the top of the fastening frame 5 flushes the inner wall of the mixing tank 1 and the materials on the mixing shaft through the water inlet pipe 6. During the flushing process, the waste water is discharged along the discharge pipe 11, and the lifting motor 16 is turned on after cleaning. During the rotation of the lifting motor 16, the driving shaft 17 drives the second gear 15 to rotate synchronously. During the rotation, the second gear 15 drives the two rotating tubes to rotate synchronously through the first gear 13. Since the threads of the inner walls of the two rotating tubes are in opposite directions, the two rotating tubes rotate synchronously in different directions, so that the bottom ends of the three-way nozzle 4 are synchronously lifted and lowered, and the folding tube 7 is driven to move synchronously during the lifting process. The three-way nozzle 4 is retracted to the top of the mixing tank 1 when not in use, thereby avoiding the three-way nozzle 4 from affecting the rotation of the mixing shaft inside the mixing tank 1.
[0032] All technical features in this embodiment can be freely combined according to actual needs.
[0033] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A stirring device for preparing a catalyst for carbon nanotubes, comprising a stirring tank (1) and a top cover (9) embedded and fixed on the top of the stirring tank (1), characterized in that: A U-shaped fastening frame (5) is fixed to the top of the top cover (9), and driving pipes (14) are rotatably inserted on both sides of the top surface of the top cover (9), wherein a three-way nozzle (4) is arranged above the top cover (9), and threaded pipes (12) are threadedly inserted in the two driving pipes (14), and both sides of the bottom end surface of the three-way nozzle (4) are fixedly inserted in the threaded pipes (12) and axially fixed to the threaded pipes (12), and the bottom end of the three-way nozzle (4) is embedded in the mixing tank (1), wherein the top end of the three-way nozzle (4) is connected to a folding pipe (7) fixed to the fastening frame (5).
2. A stirring device for preparing a catalyst for carbon nanotubes according to claim 1, characterized in that: A support ring (2) is fixedly sleeved on the bottom end of the stirring tank (1), and legs (3) are fixedly mounted in a circular array on the bottom end of the support ring (2).
3. A stirring device for preparing a catalyst for carbon nanotubes according to claim 1, characterized in that: Handles (8) are fixedly mounted on both sides of the top surface of the top cover (9), and a stirring motor (10) is mounted on the bottom end of the stirring tank (1).
4. A stirring device for preparing a catalyst for carbon nanotubes according to claim 3, characterized in that: The bottom end of the stirring tank (1) is fixedly connected to a discharge pipe (11), and a control valve is provided on the discharge pipe (11).
5. The stirring device for preparing a catalyst for carbon nanotubes according to claim 1, characterized in that: A lifting motor (16) is embedded and fixed at the top end of the top cover (9), and a driving shaft (17) is installed at the top end of the lifting motor (16).
6. A stirring device for preparing a catalyst for carbon nanotubes according to claim 5, characterized in that: The top end of the driving shaft (17) passes through the top cover (9) and is fixedly sleeved with a second gear (15); the inner walls of the two driving tubes (14) have threads in opposite directions, and the top ends of the two driving tubes (14) are fixedly sleeved with a first gear (13) meshingly connected with the second gear (15).
7. A stirring device for preparing a catalyst for carbon nanotubes according to claim 6, characterized in that: A water pump (18) is fixedly mounted on the top of the fastening frame (5), the bottom end of the water pump (18) is connected to the folding tube (7), and a water inlet pipe (6) is fixedly mounted on the top of the water pump (18).