CN113941306A

CN113941306A - Reaction kettle for preparing catalyst

Info

Publication number: CN113941306A
Application number: CN202111201026.9A
Authority: CN
Inventors: 彭何欢; 汪祥立; 廖洪铠; 刘志达; 秦永超
Original assignee: Zhejiang A&F University ZAFU
Current assignee: Zhejiang A&F University ZAFU
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-01-18

Abstract

The invention discloses a reaction kettle for preparing a catalyst, which comprises a kettle body, wherein a stirring assembly and a scraping assembly are arranged in the kettle body, a charging hole is formed in the kettle body and communicated with the kettle body, a driving piece is arranged outside the kettle body and used for driving the stirring assembly to stir, the stirring assembly comprises a stirring rod, a first stirrer, a second stirrer and a third stirrer are sequentially arranged on the stirring rod from top to bottom, the first stirrer and the third stirrer respectively generate axial flow in the direction of the opposite side, the second stirrer is used for generating radial flow, an adjusting assembly is arranged on the stirring rod and used for adjusting the third stirrer to be flush with the liquid level, the second stirrer is arranged between the first stirrer and the third stirrer and used for forming a plurality of stirring vortexes distributed in a subarea manner with the first stirrer and the third stirrer respectively, and the materials are mixed through the combined action of the first stirrer, the second stirrer and the third stirrer, meanwhile, the generation of radial flow is reduced, and the mixing effect is enhanced.

Description

Reaction kettle for preparing catalyst

Technical Field

The invention relates to chemical equipment, in particular to a reaction kettle for preparing a catalyst.

Background

In the chemical production process, in the catalyst preparation stage, often need reation kettle to come the material to carry out mixing reaction, reation kettle stirs the material through setting up the puddler to make intermixing between the different materials.

When the existing reaction kettle mixes and stirs solid and liquid materials, the traditional stirring rod is easy to generate vortex during stirring, so that the materials flow in a radial flow mode, thereby causing axial flow to be broken, so that the stirring and mixing effect is reduced, and simultaneously during the stirring process, because the inner wall of the reaction kettle is far away from the position of the stirring rod, the mixing effect of the fluid in the area close to the inner wall of the reaction kettle is poor, meanwhile, when the materials are solid and liquid, the materials dissolved in the liquid and fixed on the inner wall of the reaction kettle can be separated out again and attached to the inner wall of the reaction kettle, meanwhile, when the solid material is mixed with the liquid material, air bubbles are easily generated, so that a part of undissolved solid material is remained in the air bubbles, thereby causing further reduction in mixing effect, and in view of the above problems, there is a need for a reaction vessel for preparing a catalyst, which can obtain good mixing effect while destroying bubbles.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a reaction kettle for preparing a catalyst, which can obtain a good mixing effect and can destroy bubbles.

In order to achieve the purpose, the invention provides the following technical scheme: a reaction kettle for preparing a catalyst comprises a kettle body, wherein a stirring assembly and a scraping assembly are arranged in the kettle body, a charging hole is formed in the kettle body and communicated with the kettle body, a driving piece is arranged outside the kettle body and used for driving the stirring assembly to stir, the stirring assembly comprises a stirring rod, a first stirrer, a second stirrer and a third stirrer are sequentially arranged on the stirring rod from top to bottom, the first stirrer and the third stirrer are oppositely arranged and used for generating axial flow, the second stirrer is used for generating radial flow, a holding tank is arranged at the bottom of the kettle body, the first stirrer is arranged in the holding tank and fixedly connected with the stirring rod, an adjusting assembly is arranged on the stirring rod and used for adjusting the third stirrer to be parallel to a liquid level, and the second stirrer is arranged between the first stirrer and the third stirrer, the second stirrer is used for forming a plurality of stirring vortexes which are distributed in a partitioning mode with the first stirrer and the third stirrer respectively.

As a further improvement of the present invention, each of the first stirrer and the third stirrer includes a first substrate and a helical blade, the helical blade is circumferentially disposed on one side of the first substrate along a central axis of the first substrate, the helical blade is disposed around the stirring rod in a tapered shape, the first substrate is fixedly connected to the stirring rod, the helical blade corresponding to the first stirrer is disposed above the first substrate, and the helical blade corresponding to the third stirrer is disposed below the first substrate.

As a further improvement of the invention, the second stirrer comprises stirring blades and a second base plate, the second base plate is fixed with the stirring rod, the stirring blades are arranged along the circumferential direction of the second base plate, and the stirring blades are arranged vertically to the second base plate.

As a further improvement of the present invention, the adjusting assembly includes a rack and a first spring, the stirring rod includes a sliding section and a fixed section, the first stirrer and the second stirrer are fixedly disposed with the fixed section, a first substrate corresponding to the third stirrer is provided with a sliding hole and is sleeved on the sliding section, a first substrate corresponding to the third stirrer is provided with a sealed air cavity therein and slides on the sliding section through buoyancy, the sliding section is provided with a mounting groove along a length direction, the rack is mounted in the mounting groove through the first spring, the first spring is used for keeping a tooth top of the rack not extending out of the mounting groove, the sliding hole is provided with a tooth socket for abutting, and the rack extends out of the mounting groove and is engaged with the tooth socket under a centrifugal force.

As a further improvement of the invention, the driving piece comprises a power supply and permanent magnets which are symmetrically and fixedly arranged at two sides of the kettle body, the permanent magnets at the two sides repel each other, the stirring rod is internally provided with a conductor which is arranged in a U shape, two ends of the conductor extend out from one end of the stirring rod far away from the first stirrer, arc-shaped conducting strips are symmetrically arranged at two ends of the conductor, a gap is reserved between the conducting strips at the two ends, a collision device and a conductive block are symmetrically arranged in the kettle body, one end of the conductive block is connected with the collision device, the other end is respectively connected with the anode and the cathode of the power supply, the contact device comprises a contact block and a second spring, a through hole is arranged on the inner wall of the kettle body corresponding to the position of the conducting strip, the conducting block is arranged in the through hole, one end of the second spring is connected with the conducting block, the other end of the second spring is connected with the conflict block, and the second spring is used for driving the conflict block to stretch out the through hole to conflict with the conducting strip.

As a further improvement of the invention, the scraping component comprises a connecting rod, a rotating rod and a scraping rod, wherein the connecting rod, the rotating rod and the scraping rod are all made of non-magnetic materials, the connecting rod is vertically arranged along the central axis of the stirring rod and is fixedly connected with the stirring rod, the scraping rod is connected with one end of the connecting rod, which is far away from the stirring rod, through the rotating rod, one end of the rotating rod is fixedly connected with the connecting rod, the other end of the rotating rod is rotatably connected with the scraping rod, the scraping rod is star-shaped or polygonal, and the scraping rod is abutted against the inner wall of the kettle body.

The invention has the beneficial effects that: through first agitator, the combined action of second agitator and third agitator realizes the mixture to the material, reduce the production of radial flow simultaneously, the reinforcing mixes the effect, make the third agitator can slide on the section of sliding automatically through setting up sealed air cavity simultaneously, it is parallel with the liquid level to realize the agitator through adjusting part, thereby destroy the bubble when generating the axial flow, the setting of rack and first spring realizes automatic fixed, the driving piece drives through magnetic force and can guarantee reation kettle sealing performance, avoid leaking, the bull stick rotates with scraping the material pole simultaneously and is connected and make and scrape the material pole and can rotate automatically when scraping the material, compare in traditional mode of scraping the tablet and scrape the material and can effectively avoid solid material to separate out on scraping the tablet, mixing performance has been strengthened together with a plurality of agitators.

Drawings

FIG. 1 is an overall schematic view of the present invention;

FIG. 2 is a schematic view of the kettle of the present invention;

FIG. 3 is an installation view of the stirring assembly and scraping assembly of the present invention;

FIG. 4 is a cross-sectional view of the scraper assembly of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4;

FIG. 6 is an enlarged view of FIG. 3A;

FIG. 7 is a schematic view of a collision device;

fig. 8 is an enlarged view of fig. 3B.

Reference numerals: 1. a kettle body; 2. a stirring assembly; 3. a scraping component; 4. a drive member; 5. a stirring rod; 6. a first stirrer; 7. a second agitator; 8. a third stirrer; 9. accommodating grooves; 10. an adjustment assembly; 11. a first substrate; 12. a helical blade; 13. a stirring blade; 14. a second substrate; 15. a rack; 16. a first spring; 17. a slipping section; 18. a fixed section; 19. a sliding hole; 20. sealing the air cavity; 21. mounting grooves; 22. against the tooth grooves; 23. a permanent magnet; 24. an electrical conductor; 25. a conductive sheet; 26. a gap; 27. a collision device; 28. a conductive block; 29. a contact block; 30. a second spring; 31. a connecting rod; 32. a rotating rod; 33. a scraping rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals.

As shown in fig. 1-8, a reaction kettle for preparing a catalyst comprises a kettle body 1, a stirring assembly 2 and a scraping assembly 3 are arranged in the kettle body 1, a charging opening is arranged on the kettle body 1 and communicated with the kettle body 1, a driving member 4 is arranged outside the kettle body 1, the driving member 4 is used for driving the stirring assembly 2 to stir, the stirring assembly 2 comprises a stirring rod 5, a first stirrer 6, a second stirrer 7 and a third stirrer 8 are sequentially arranged on the stirring rod 5 from top to bottom, the first stirrer 6 and the third stirrer 8 are arranged in opposite directions to generate axial flow, the second stirrer 7 is used for generating radial flow, a holding tank 9 is arranged at the bottom of the kettle body 1, the first stirrer 6 is arranged in the holding tank 9 and fixedly connected with the stirring rod 5, an adjusting assembly 10 is arranged on the stirring rod 5, the adjusting assembly 10 is used for adjusting the third stirrer 8 to be flush with a liquid level, the adjusting component comprises a driving motor and a moving block, the driving motor is arranged in the stirring rod 5, a screw is arranged at the output end of the driving motor, a screw hole is formed in the moving block, the moving block is in threaded connection with the screw through the screw hole, a sliding groove is formed in the stirring rod 5, a connecting rod is fixedly connected with the moving block on the third stirrer 8, the output end of the driving motor rotates to drive the screw to rotate, the moving block is further driven to move along the screw, the third stirrer 8 is further driven to move along the stirring rod, the adjusting component is further preferred, the adjusting component further comprises an induction device, the induction device is used for an induction module and a driving module, the induction module is used for inducing the liquid level position, the driving module is used for driving the driving motor to rotate, the second stirrer 7 is arranged between the first stirrer 6 and the third stirrer 8, and the second stirrer 7 is used for forming stirring in a plurality of subareas with the first stirrer 6 and the third stirrer 8 respectively When the stirring device is used, the third stirrer 8 is adjusted to be level with the liquid level through the adjusting component 10, the stirring rod 5 is driven to rotate through the driving component 4, the first stirrer 6, the second stirrer 7 and the third stirrer 8 are further driven to stir, axial flow is generated in the direction of the opposite side through the first stirrer 6 and the third stirrer 8 respectively and is collided at the position of the second stirrer 7, radial flow is generated through the second stirrer to drive the collided fluid to impact the side wall of the reaction kettle 1, the fluid is diffused after impacting the side wall of the reaction kettle 1, the diffused fluid is driven to be collided through the first stirrer 6 and the third stirrer 8 again, so that a plurality of stirring areas are realized, the stirring effect is enhanced, meanwhile, the scraping component 3 moves to scrape the inner wall of the reaction kettle 1, part of residual solid materials are wrapped by bubbles to float on the liquid surface, and the third stirrer 8 is level with the liquid level, the bubble that drives the liquid surface through rivers moves to 8 directions of third agitator, destroys the bubble and drives solid material along with the axial flow motion through third agitator 8 to realize the remixing, thereby effectively strengthened mixed effect, set up first agitator 6 simultaneously and can effectively avoid agitator bottom velocity of flow to lead to the defect that solid material appears again slowly in holding tank 9, the practicality is strong.

Preferably, first agitator 6 and third agitator 8 all include first base plate 11 and helical blade 12, helical blade 12 encircles along 11 axis circumference of first base plate and sets up in 11 one sides of first base plate, helical blade 12 is the taper and encircles puddler 5 setting, first base plate 11 and puddler 5 fixed connection, the helical blade 12 that first agitator 6 corresponds sets up in 11 tops of first base plate, the helical blade 12 that third agitator 8 corresponds sets up in 11 below of first base plate, can effectively destroy the bubble through helical blade 12's setting, the processing of being convenient for simultaneously.

Preferably, the second stirrer 7 comprises stirring blades 13 and a second substrate 14, the second substrate 14 is fixed to the stirring rod 5, the stirring blades 13 are circumferentially arranged along the second substrate 14, the stirring blades 13 are vertically arranged with the second substrate 14, and a large radial force can be obtained through vertical arrangement, so that the flow speed is increased, and the mixing effect is improved.

Preferably, the adjusting assembly 10 includes a rack 15 and a first spring 16, the stirring rod 5 includes a sliding section 17 and a fixed section 18, the first stirrer 6 and the second stirrer 7 are fixedly disposed with the fixed section 18, a sliding hole 19 is disposed on the first substrate 11 corresponding to the third stirrer 8 and sleeved on the sliding section 17, a sealing air chamber 20 is disposed in the first substrate 11 corresponding to the third stirrer 8 and slides on the sliding section 17 through buoyancy, an installation groove 21 is disposed on the sliding section 17 along the length direction, the rack 15 is installed in the installation groove 21 through the first spring 16, the first spring 16 is used for keeping the tooth top of the rack 15 not extending out of the installation groove 21, a contact tooth groove 22 is disposed on the sliding hole 19, the rack 15 extends out of the installation groove 21 and is engaged with the contact tooth groove 22 under the action of centrifugal force, and the rack 15 can be automatically engaged with and separated from the contact tooth groove 22 through the centrifugal force, reducing component requirements and thus reducing costs.

Preferably, the driving manner of the driving part 4 includes magnetic driving and motor driving, and further preferably, in this embodiment, the driving part 4 is driven by magnetism, the driving part 4 includes a power supply and permanent magnets 23 symmetrically and fixedly disposed at two sides of the kettle 1, the permanent magnets 23 at two sides repel each other, a conductive body 24 is disposed in the stirring rod 5, the conductive body 24 is U-shaped, two ends of the conductive body 24 both extend out from one end of the stirring rod 5 away from the first stirrer 6, two ends of the conductive body 24 are symmetrically provided with arc-shaped conductive sheets 25, a gap 26 is left between the conductive sheets 25 at two ends, a collision device 27 and a conductive block 28 are symmetrically disposed in the kettle 1, one end of the conductive block 28 is connected with the collision device 27, the other end is connected with the positive pole and the negative pole of the power supply respectively, the collision device 27 includes a collision block 29 and a second spring 30, the position that the corresponding conducting strip 25 of 1 inner wall of the cauldron body is equipped with the through-hole, conducting block 28 sets up in the through-hole, second spring 30 one end is connected with conducting block 28, and the other end is connected with touch block 29, second spring 30 is used for driving touch block 29 and stretches out the through-hole and contradict with conducting strip 25, can ensure reation kettle 1 sealing performance in mixing process through magnetic drive's mode, avoids leaking, increases the practicality.

Preferably, the scraping component 3 comprises a connecting rod 31, a rotating rod 32 and a scraping rod 33, the connecting rod 31, the rotating rod 32 and the scraping rod 33 are all made of non-magnetic materials, the connecting rod 31 is vertically arranged along the central axis of the stirring rod 5 and is fixedly connected with the stirring rod 5, the scraping rod 33 is connected with one end of the connecting rod 31 far away from the stirring rod 5 through the rotating rod 32, one end of the rotating rod 32 is fixedly connected with the connecting rod 31, the other end is rotatably connected with the scraping rod 33, the scraping rods 33 are star-shaped or polygonal, the scraping rods 33 are abutted against the inner wall of the kettle body 1, when in use, the connecting rod 31 is driven to move by the stirring rod 5, so that the scraping rod 33 is driven to rotate by water flow, scrape the material to the 1 inner wall of the cauldron body, scrape the material simultaneously through the pivoted mode and can effectively avoid solid material to appear on scraping material pole 33, can cooperate the stirring effect of stirring subassembly 2 reinforcing cauldron body 1 inner wall simultaneously.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A reation kettle for preparing catalyst, includes the cauldron body (1), its characterized in that: the stirring device is characterized in that a stirring assembly (2) and a scraping assembly (3) are arranged in the kettle body (1), a charging opening is formed in the kettle body (1) and communicated with the kettle body (1), a driving piece (4) is arranged outside the kettle body (1), the driving piece (4) is used for driving the stirring assembly (2) to stir, the stirring assembly (2) comprises a stirring rod (5), a first stirrer (6), a second stirrer (7) and a third stirrer (8) are sequentially arranged on the stirring rod (5) from top to bottom, the first stirrer (6) and the third stirrer (8) are oppositely arranged and used for generating axial flow, the second stirrer (7) is used for generating radial flow, a holding tank (9) is arranged at the bottom of the kettle body (1), the first stirrer (6) is arranged in the holding tank (9) and fixedly connected with the stirring rod (5), an adjusting assembly (10) is arranged on the stirring rod (5), adjusting part (10) are used for adjusting third agitator (8) and liquid level parallel and level, second agitator (7) set up between first agitator (6) and third agitator (8), second agitator (7) are used for forming the stirring vortex that a plurality of subregion distribute with first agitator (6) and third agitator (8) respectively.

2. The reactor for preparing catalyst according to claim 1, wherein: first agitator (6) and third agitator (8) all include first base plate (11) and helical blade (12), helical blade (12) encircle along first base plate (11) axis circumference and set up in first base plate (11) one side, helical blade (12) are the taper and encircle puddler (5) and set up, first base plate (11) and puddler (5) fixed connection, helical blade (12) that first agitator (6) correspond set up in first base plate (11) top, helical blade (12) that third agitator (8) correspond set up in first base plate (11) below.

3. The reactor for preparing catalyst according to claim 2, wherein: the second stirrer (7) comprises stirring blades (13) and a second substrate (14), the second substrate (14) is fixed with the stirring rod (5), the stirring blades (13) are arranged along the circumferential direction of the second substrate (14), and the stirring blades (13) are perpendicular to the second substrate (14).

4. The reactor for preparing catalyst according to claim 2, wherein: the adjusting assembly (10) comprises a rack (15) and a first spring (16), the stirring rod (5) comprises a sliding section (17) and a fixed section (18), the first stirrer (6) and the second stirrer (7) are fixedly arranged with the fixed section (18), a sliding hole (19) is formed in a first base plate (11) corresponding to the third stirrer (8) and is sleeved on the sliding section (17), a sealed air cavity (20) is formed in the first base plate (11) corresponding to the third stirrer (8) and slides on the sliding section (17) through buoyancy, an installation groove (21) is formed in the sliding section (17) along the length direction, the rack (15) is installed in the installation groove (21) through the first spring (16), the first spring (16) is used for keeping the tooth top of the rack (15) not to extend out of the installation groove (21), and a butting tooth groove (22) is formed in the sliding hole (19), the rack (15) extends out of the mounting groove (21) under the action of centrifugal force and is meshed with the abutting tooth groove (22).

5. The reactor for preparing catalyst according to claim 1, wherein: the driving part (4) comprises a power supply and permanent magnets (23) which are symmetrically and fixedly arranged on two sides of the kettle body (1), the permanent magnets (23) on two sides repel each other, a conductive body (24) is arranged in the stirring rod (5), the conductive body (24) is arranged in a U shape, two ends of the conductive body (24) extend out from one end, far away from the first stirrer (6), of the stirring rod (5), two ends of the conductive body (24) are symmetrically provided with arc-shaped conductive sheets (25), a gap (26) is reserved between the conductive sheets (25) on two ends, the kettle body (1) is internally and symmetrically provided with a conflict device (27) and a conductive block (28), one end of the conductive block (28) is connected with the conflict device (27), the other end of the conductive block is respectively connected with the positive pole and the negative pole of the power supply, the conflict device (27) comprises a conflict block (29) and a second spring (30), and a through hole is arranged on the inner wall of the kettle body (1) corresponding to the conductive sheet (25), conductive block (28) set up in the through-hole, second spring (30) one end is connected with conductive block (28), and the other end is connected with conflict piece (29), second spring (30) are used for driving conflict piece (29) and stretch out the through-hole and contradict with conducting strip (25).

6. The reactor according to claim 1 or 5, wherein: scrape material subassembly (3) and include connecting rod (31), bull stick (32) and scrape material pole (33), connecting rod (31), bull stick (32) and scrape material pole (33) and be non-magnetic material, connecting rod (31) along puddler (5) axis perpendicular setting and with puddler (5) fixed connection, scrape material pole (33) and keep away from the one end of puddler (5) through bull stick (32) and connecting rod (31) and be connected, bull stick (32) one end and connecting rod (31) fixed connection, the other end with scrape material pole (33) and rotate and be connected, it is star or polygon to scrape material pole (33), scrape material pole (33) and the conflict of cauldron body (1) inner wall.