Stirring device for catalytic reaction

Abstract

The utility model relates to the technical field of chemical reaction equipment, in particular to a stirring device for catalytic reaction. According to the stirring device disclosed by the utility model, when the paddles are mounted, the first sliding blocks on the limiting ring slide into the limiting grooves with different heights through the first sliding grooves, so that the paddles are driven to be fixed on the stirring rod, and when the paddles are dismounted, the first sliding blocks slide out through the limiting grooves and the first sliding grooves, so that the stirring paddle assembly is convenient to dismount and mount; according to the utility model, the cavity is arranged inside the paddle, the paddle is used as a carrier for placing the solid catalyst, the solid catalyst is placed into the cavity inside the paddle through the opening at the inner end of the paddle, and the through hole is formed in the paddle, so that the solid catalyst is convenient to contact with other fluid reaction substances, and the catalytic reaction is carried out; the inner end opening of the paddle abuts against the limiting ring through the clamping and fixing assembly, limiting of the clamping and fixing assembly is cancelled after the reaction is completed, the inner end opening of the paddle can be opened, and the solid catalyst is poured out.

Description

Technical Field

[0001] This application relates to the technical field of chemical reaction equipment, and particularly relates to a stirring device for catalytic reactions. Background Art

[0002] Catalysts are substances necessary for many reactions. There are many types of catalysts, which can be roughly classified into solid catalysts, liquid catalysts, and gas catalysts according to their states. Because of the high activity, high selectivity, and high stability of solid catalysts, they are widely used in catalytic reactions. After the catalytic reaction is completed, the solid catalyst needs to be separated from other reaction substances for other experimental operations. Most of the existing solid catalysts are directly put into the reaction kettle. However, after the reaction is completed, it is difficult to quickly separate the solid catalyst from the fluid. The solid catalyst is likely to be discharged together with the fluid along the discharge port, and separating outside the reaction kettle will increase the operation process. Summary of the Utility Model

[0003] The utility model aims to solve the problem that it is difficult to separate the solid catalyst, and thus provides a stirring device capable of quickly separating the solid catalyst.

[0004] The technical solution adopted by the utility model to solve the above problems is as follows:

[0005] A stirring device for catalytic reactions includes a reaction kettle, a stirring rod, and a stirring paddle assembly. The stirring rod and the stirring paddle assembly are arranged in the reaction kettle. At least two first chutes extending to the bottom surface are formed on the surface of the stirring rod. The first chutes are arranged parallel to the axial direction of the stirring rod. A plurality of limiting grooves are formed at different heights on one side of each first chute on the stirring rod, and each limiting groove communicates with the corresponding first chute.

[0006] The stirring paddle assembly includes a limiting ring and at least two paddle blades. First sliders matching the first chutes and the limiting grooves are arranged on the limiting ring. The first sliders slide through the first chutes into the limiting grooves. A cavity for accommodating the solid catalyst is arranged inside each paddle blade. A number of through holes penetrating the cavity and the outside of the paddle blade are formed on each paddle blade. The inner end openings of the paddle blades are rotatably connected to the limiting ring, and a clamping component is arranged on the limiting ring. The clamping component is used to abut the inner end openings of the paddle blades against the limiting ring.

[0007] The utility model adopting the above technical solution, compared with the prior art, has the following beneficial effects:

[0008] With the stirring device of the present utility model, when installing the paddle, the first slider on the limiting ring is slid through the first chute to the limiting grooves at different heights, thereby driving the paddle to be fixed on the stirring rod. When disassembling, the first slider can be slid out through the limiting groove and the first chute, which is convenient for disassembling and assembling the stirring paddle assembly; in the present utility model, a cavity is provided inside the paddle, so that the paddle serves as a carrier for placing the solid catalyst. The solid catalyst is placed into the inner cavity of the paddle through the inner end opening of the paddle, and through holes are provided on the paddle to facilitate the contact between the solid catalyst and other fluid reaction substances, thereby carrying out the catalytic reaction; the inner end opening of the paddle is abutted against the limiting ring through the clamping component. After the reaction is completed, the limit of the clamping component is cancelled, and the inner end opening of the paddle can be opened to pour out the solid catalyst.

[0009] As a preference, a further technical solution of the present utility model is:

[0010] Elastic pressing blocks are arranged in the communication channels between the first chute and each limiting groove. When the first slider slides into the limiting groove, the lower end of the elastic pressing block abuts against the first slider. By setting the elastic pressing blocks, it is avoided that the first slider clamped in the limiting groove slides out, thereby increasing the stability of the paddle.

[0011] The cross-sectional dimensions of the first chute and the limiting groove are the same, and the cross-section is T-shaped. The first slider is fixed on the inner wall of the limiting ring, the inner diameter of the limiting ring is the same as the outer diameter of the stirring rod, and the first slider is set as a T-shaped slider matching the T-shaped first chute and the limiting groove. Through the above structure, the first slider can slide stably in the first chute and the limiting groove without falling off.

[0012] Two annular grooves are circumferentially and equidistantly arranged on the limiting ring. Fixing sleeves are sleeved on the inner end heads of each paddle. One ends of the two fixing sleeves are respectively pin-connected to the inner walls of one ends of the two annular grooves, and the fixing sleeves and the inner end faces of the paddles abut against the inner walls of the corresponding annular grooves. Through the above structure, the fixing sleeves drive the inner end heads of the paddles to open or close in the annular grooves, thereby facilitating the opening or closing of the inner cavity of the paddle.

[0013] The clamping component includes a spring and a limiting cover plate. A fixing groove is provided on one side of each annular groove on the limiting ring. The spring is fixed on the inner wall of the fixing groove far away from the annular groove. A second slider is slidably arranged circumferentially in the fixing groove. The other end of the spring abuts against the second slider, and the outer end of the second slider is connected to the limiting cover plate. When the fixing sleeve and the inner end face of the paddle abut against the inner wall of the annular groove, the front end of the limiting cover plate abuts against the outer wall of the fixing sleeve under the action of the spring. Through the above structure, the limiting cover plate abuts against or moves away from the fixing sleeve under the action of the spring, thereby realizing the limitation of the position of the fixing sleeve.

[0014] A motor is arranged on the reaction kettle, and the output shaft of the motor passes through the reaction kettle and is coaxially fixed to the stirring rod. The stirring rod is driven to rotate by the motor, thereby driving the paddle on the stirring rod to rotate. Brief Description of the Drawings

[0015] Figure 1 is the front structural view of the motor, stirring rod and stirring paddle assembly of the embodiment of the present application;

[0016] Figure 2 is the three-dimensional structural view of the motor, stirring rod and stirring paddle assembly of the embodiment of the present application;

[0017] Figure 3 is the three-dimensional structural view of the motor and stirring rod of the embodiment of the present application;

[0018] Figure 4 is Figure 3 the partial enlarged view of A in

[0019] Figure 5 is the three-dimensional structural view of the stirring paddle assembly of the embodiment of the present application;

[0020] Figure 6 is Figure 5 the partial enlarged disassembled schematic view of B in

[0021] Figure 7 is the overall structural schematic view of the embodiment of the present application.

[0022] In the figure: 1. Motor; 11. Output shaft; 12. First flange; 13. Second flange; 2. Stirring rod; 21. First chute; 22. Elastic pressing block; 23. Limiting groove; 24. First spring; 31. Limiting ring; 311. First slider; 312. Arc-shaped groove; 313. Fixed groove; 314. Second chute; 32. Paddle; 321. Through hole; 322. Fixed sleeve; 33. Clamping assembly; 331. Limiting cover plate; 332. Second spring; 333. Second slider; 4. Reactor. Detailed Description of the Embodiment

[0023] The following further describes the present utility model in conjunction with embodiments, and the purpose is only to better understand the content of the present utility model. Therefore, the examples given do not limit the protection scope of the present utility model.

[0024] Refer to Figure 1-7, an embodiment of the present application discloses a stirring device for catalytic reaction, including a reaction kettle 4, a motor 1, a stirring rod 2 and a stirring paddle assembly. The stirring rod 2 and the stirring paddle assembly are arranged in the reaction kettle 4. An opening is provided at the top of the reaction kettle 4. A first flange 12 is coaxially fixed on the stator of the motor 1. A second flange 13 is fixed on the reaction kettle 4 at the opening position. By fixing the first flange 12 and the second flange 13 with bolts, the stator of the motor 1 can be fixed to the reaction kettle 4. The output shaft 11 of the motor 1 passes through the first flange 12, the second flange 13 and the opening and extends into the reaction kettle 4, and is coaxially fixed with the stirring rod 2. The stirring rod 2 is driven to rotate by the motor 1; Two through first chutes 21 are provided on the surface of the stirring rod 2. The two first chutes 21 are circumferentially equidistantly arranged. The length direction of the first chute 21 is parallel to the axial direction of the stirring rod 2. Three limiting grooves 23 are provided at different heights on the same side of the two first chutes 21 on the stirring rod 2. The distances between the three limiting grooves 23 and the corresponding first chute 21 are the same. The three limiting grooves 23 are axially equidistant and the limiting grooves 23 at the same height are circumferentially equidistant. Each limiting groove 23 communicates with the corresponding first chute 21;

[0025] The stirring paddle assembly includes a limiting ring 31 and at least two paddle blades 32. The two paddle blades 32 are circumferentially equidistantly installed on the limiting ring 31. A first slider 311 matching the first chute 21 and the limiting groove 23 is provided on the limiting ring 31. The first slider 311 slides into the limiting groove 23 through the first chute 21; A cavity for accommodating solid catalyst is provided inside each paddle blade 32. A number of through holes 321 penetrating the cavity and the outside of the paddle blade 32 are provided on each paddle blade 32. The inner ends of the paddle blades 32 are rotatably connected to the limiting ring 31. The outer ends of the paddle blades 32 radially extend towards the inner wall of the reaction kettle 4. A clamping component 33 is provided on the limiting ring 31. The clamping component 33 is used to abut the inner end opening of the paddle blade 32 against the limiting ring 31.

[0026] In this embodiment, the communication channel between the first chute 21 and each limiting groove 23 is an arc-shaped communication groove. Three first springs 24 are fixed on the inner wall of the top end of each arc-shaped communication groove. The lower ends of the three first springs 24 are fixedly connected with an elastic pressing block 22. When the spring is in a natural state, the bottom surface of the elastic pressing block 22 abuts against the inner wall of the bottom end of the arc-shaped communication groove; When the first slider 311 slides to the position of the first chute 21 beside the arc-shaped communication groove, the elastic pressing block 22 is pressed upwards. At this time, the first spring 24 is compressed, and a channel for the first slider 311 to slide into the limiting groove 23 is opened in the arc-shaped communication groove. When the first slider 311 slides into the limiting groove 23, the elastic pressing block 22 is released, and the first spring 24 rebounds, driving the lower end of the elastic pressing block 22 to abut against the first slider 311 in the limiting groove 23. By setting the elastic pressing block 22, it is avoided that the first slider 311 clamped in the limiting groove 23 slides out, thereby increasing the stability of the paddle blade 32.

[0027] In this embodiment, the cross-sectional dimensions of the first chute 21 and the limiting groove 23 are the same, and the cross-sections are both T-shaped. The first slider 311 is fixed on the inner wall of the limiting ring 31. The inner diameter of the limiting ring 31 is the same as the outer diameter of the stirring rod 2. The first slider 311 is arranged as a T-shaped slider matching the T-shaped first chute 21 and the limiting groove 23. Through the above structure, the first slider 311 can stably slide in the first chute 21 and the limiting groove 23 without falling off.

[0028] In this embodiment, two annular grooves are circumferentially and equidistantly formed on the limiting ring 31. The inner end faces of the respective blades 32 are arranged as curved surfaces with the same arc as the limiting ring 31. The inner end faces of the blades 32 communicate with the cavity. A fixing sleeve 322 is sleeved on the inner end heads of the respective blades 32. The height of the fixing sleeve 322 is slightly less than the height of the annular groove. A pin shaft is inserted into the left ends of the two annular grooves. The left ends of the two fixing sleeves 322 are respectively pin-connected to the left ends of the two annular grooves through the pin shaft, and the fixing sleeve 322 and the inner end face of the blade 32 are abutted against the inner wall of the corresponding annular groove; a fixing groove 313 is formed on the limiting ring 31 on the right side of the annular groove. The clamping component 33 includes a second spring 332 and a limiting cover plate 331. The second spring 332 is fixed on the right inner wall of the fixing groove 313 away from the annular groove. Second chutes 314 are formed at the top and bottom of the fixing groove 313. A second slider 333 is movably arranged in the two second chutes 314. Through the second chutes 314, the second slider 333 slides circumferentially in the fixing groove 313. The other end of the second spring 332 abuts against the right side face of the second slider 333. The outer end of the second slider 333 is connected to the limiting cover plate 331. When the second spring 332 is in a natural stretched state, the front inner wall of the limiting cover plate 331 abuts against the outer wall of the fixing sleeve 322, thereby clamping the fixing sleeve 322 in the arc-shaped groove 312 and closing the inner end opening of the blade 32 to prevent the solid catalyst in the cavity from falling out during stirring; preferably, the inner side surface radian of the limiting cover plate 331 is the same as the outer wall radian of the limiting ring 31, and the area of the limiting cover plate 331 is larger than the area of the fixing groove 313, so that the limiting cover plate 331 can slide circumferentially along the fixing groove 313 of the limiting ring 31 and prevent the limiting cover plate 331 from getting stuck in the fixing groove 313 when sliding; when it is necessary to open the inner end opening of the blade 32, press and slide the limiting cover plate 331 in a direction away from the annular groove. The second spring 332 is compressed, and the position limitation between the limiting cover plate 331 and the fixing sleeve 322 is cancelled, and then the blade 32 can be rotated to open the inner end opening of the blade 32. When it is necessary to close the inner end opening of the blade 32, abut the inner end face of the blade 32 and the inner end face of the fixing sleeve 322 in the annular groove, and release the limiting cover plate 331. The second spring 332 immediately retracts, driving the limiting cover plate 331 to move towards the annular groove direction and fixing the fixing sleeve 322 in the annular groove.

[0029] With the stirring device of the present utility model, when installing the paddle 32, the first slider 311 on the limiting ring 31 is slid through the first chute 21 into the limiting grooves 23 at different heights, thereby driving the paddle 32 to be fixed on the stirring rod 2. When disassembling, the first slider 311 can be slid out through the limiting groove 23 and the first chute 21, which is convenient for disassembling and assembling the stirring paddle assembly; in the present utility model, a cavity is arranged inside the paddle 32, so that the paddle 32 serves as a carrier to place the solid catalyst. The solid catalyst is placed into the inner cavity of the paddle 32 through the inner end opening of the paddle 32, and through holes 321 are formed in the paddle 32 to facilitate the contact between the solid catalyst and other fluid reaction substances, thereby carrying out the catalytic reaction; the inner end opening of the paddle 32 is abutted against the limiting ring 31 through the clamping component 33. After the reaction is completed, the limit of the clamping component 33 is cancelled, and the inner end opening of the paddle 32 can be opened to pour out the solid catalyst.

[0030] The above are only the preferred and feasible embodiments of the present utility model, and do not limit the scope of rights of the present utility model accordingly. Any equivalent changes made by using the content of the specification and drawings of the present utility model are included in the scope of rights of the present utility model.

Claims

1. A stirring device for catalytic reactions, characterized in that: It includes a reaction kettle, a stirring rod and a stirring paddle assembly. The stirring rod and the stirring paddle assembly are arranged in the reaction kettle. At least two first sliding grooves extending to the bottom surface are formed on the surface of the stirring rod. The first sliding grooves are arranged parallel to the axial direction of the stirring rod. A plurality of limiting grooves are formed at different heights on one side of each first sliding groove on the stirring rod. Each limiting groove communicates with the corresponding first sliding groove. The stirring paddle assembly includes a limiting ring and at least two paddle blades. First sliders matching the first sliding grooves and the limiting grooves are arranged on the limiting ring. The first sliders slide into the limiting grooves through the first sliding grooves. A cavity for accommodating a solid catalyst is arranged inside each paddle blade. A number of through holes penetrating the cavity and the outside of the paddle blade are formed on each paddle blade. The inner end openings of the paddle blades are rotatably connected to the limiting ring, and a clamping assembly is arranged on the limiting ring. The clamping assembly is used to abut the inner end openings of the paddle blades against the limiting ring.

2. The stirring device for catalytic reaction according to claim 1, characterized in that: Elastic pressing blocks are arranged in the communication channels between the first sliding grooves and the limiting grooves. When the first sliders slide into the limiting grooves, the lower ends of the elastic pressing blocks abut against the first sliders.

3. The stirring device for catalytic reaction according to claim 1, characterized in that: The cross-sectional dimensions of the first sliding grooves and the limiting grooves are the same, and the cross-sections are both T-shaped. The first sliders are fixed on the inner wall of the limiting ring. The inner diameter of the limiting ring is the same as the outer diameter of the stirring rod. The first sliders are arranged as T-shaped sliders matching the T-shaped first sliding grooves and the limiting grooves.

4. The stirring device for catalytic reaction according to claim 1, wherein: Two annular grooves are circumferentially and equidistantly formed on the limiting ring. Fixing sleeves are sleeved on the inner ends of the paddle blades. One ends of the two fixing sleeves are respectively pin-connected to the inner walls of one ends of the two annular grooves, and the fixing sleeves and the inner end faces of the paddle blades abut against the inner walls of the corresponding annular grooves.

5. The stirring device for catalytic reaction according to claim 4, wherein: The clamping assembly includes a spring and a limiting cover plate. Fixing grooves are formed on one side of each annular groove on the limiting ring. The spring is fixed on the inner wall of the fixing groove far away from the annular groove. A second slider is circumferentially slidably arranged in the fixing groove. The other end of the spring abuts against the second slider. The outer end of the second slider is connected to the limiting cover plate. When the fixing sleeves and the inner end faces of the paddle blades abut against the inner walls of the annular grooves, the front end of the limiting cover plate abuts against the outer wall of the fixing sleeve under the action of the spring.

6. The stirring device for catalytic reaction according to claim 1, characterized in that: A motor is arranged on the reaction kettle. The output shaft of the motor passes through the reaction kettle and is coaxially fixed to the stirring rod.

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