CN212790993U

CN212790993U - Stirring mechanism of reaction kettle

Info

Publication number: CN212790993U
Application number: CN202021572534.9U
Authority: CN
Inventors: 范银瓶; 田家辉
Original assignee: Zhejiang Yilong New Material Co ltd
Current assignee: Zhejiang Yilong New Material Co ltd
Priority date: 2020-08-01
Filing date: 2020-08-01
Publication date: 2021-03-26
Anticipated expiration: 2030-08-01

Abstract

The utility model relates to a stirring mechanism of a reaction kettle, which comprises a main feeding pipe and an auxiliary feeding pipe which are arranged above the reaction kettle, a stirring device arranged on the main feeding pipe and an auxiliary stirring device arranged in the reaction kettle, wherein the stirring mechanism comprises a stirring box connected on the main feeding pipe, the main feeding pipe is communicated with the inside of the stirring box above the stirring box, the bottom plate of the stirring box is connected with two raw feeding pipes which are introduced with acrylic acid and polymerization inhibitor, the raw feeding pipes are provided with one-way valves which enable raw materials to flow into the stirring box, a baffle plate is vertically arranged in the stirring box and divides the stirring box into a control box and a reaction box, the stirring mechanism further comprises a control motor arranged in the control box, an output shaft of the control motor horizontally penetrates through the partition plate and is connected with a stirring shaft in the reaction box, and a plurality of stirring blades are fixed on the stirring shaft. The utility model discloses have the effect that prevents acrylic acid partial oxidation polymerization.

Description

Stirring mechanism of reaction kettle

Technical Field

The utility model belongs to the technical field of the technique of sticky tape adhesive processing and specifically relates to a reation kettle's rabbling mechanism is related to.

Background

Isooctyl acrylate is a chemical substance mainly used as a soft monomer for manufacturing acrylate solvent type and emulsion type pressure-sensitive adhesives, is also used as a main monomer for producing microspheric pressure-sensitive adhesives for notepaper, and is also used for manufacturing products such as coatings, plastic modifiers, paper making and leather processing aids, fabric finishing agents and the like. It can be used for processing synthetic fiber fabric and used as adhesive (anti-wound pressure-sensitive adhesive). Acrylic acid and isooctyl alcohol need to carry on esterification reaction in the reactor in the course of making resin in esterification reaction, because acrylic acid is apt to oxidize and polymerize under the condition of high temperature, will often add phenothiazine as polymerization inhibitor, fully stir, prevent acrylic acid from oxidizing and polymerizing, raise the output of reactant.

The publication number is CN202860523U in the Chinese patent, discloses a reaction kettle stirrer, relates to a reaction kettle stirring device, and includes reation kettle, (mixing) shaft and stirring axle sleeve, the stirring axle sleeve set up bottom center in reation kettle, (mixing) shaft set up on the (mixing) shaft sleeve, the (mixing) shaft on be equipped with the paddle, the paddle be perpendicular spiral shell belt paddle, be equipped with the auger on the perpendicular spiral shell belt paddle branch. Simple structure, reasonable in design, perpendicular spiral shell belt paddle stirring scope is big, and the material of reation kettle inner wall can be driven to the outlying rotary blade of perpendicular spiral shell belt paddle, reduces the stirring space, and the material can obtain intensive mixing, improves stirring quality.

The above prior art solutions have the following drawbacks: when the reaction kettle is used as a reaction vessel for esterification reaction of acrylic acid and isooctanol, because the internal temperature of the reaction kettle is higher, a certain time is needed for the acrylic acid and the isooctanol to enter the reaction kettle for mixing, and in the process, the acrylic acid is partially oxidized and polymerized, thus the yield after the esterification reaction is seriously influenced.

Therefore, a new reaction kettle is urgently needed in the market to solve the problems.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects existing in the prior art, the utility model aims at providing a stirring mechanism of a reaction kettle.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a stirring mechanism of a reaction kettle comprises a main feeding pipe and an auxiliary feeding pipe which are arranged above the reaction kettle and are communicated with the inside of the reaction kettle, a stirring device arranged on the main feeding pipe and an auxiliary stirring device arranged in the reaction kettle, wherein the stirring device comprises a stirring box connected on the main feeding pipe, the main feeding pipe is communicated with the inside of the stirring box above the stirring box, the bottom plate of the stirring box is connected with two original feeding pipes which are introduced with acrylic acid and polymerization inhibitor, the original feeding pipes are provided with one-way valves which enable raw materials to flow into the stirring box, a baffle plate is vertically arranged in the stirring box and divides the stirring box into a control box and a reaction box, the stirring device further comprises a control motor arranged in the control box, an output shaft of the control motor horizontally penetrates through the baffle plate and is connected with a stirring shaft in the reaction box, and a plurality of stirring blades are fixed on the stirring shaft.

Through adopting above-mentioned technical scheme, let in acrylic acid and polymerization inhibitor in two former inlet pipes to the agitator tank, the control motor starts, drives stirring vane and rotates, makes two kinds of raw materialss abundant mixing, stirs after avoiding entering into the reation kettle of high temperature, makes the partial oxidation polymerization of acrylic acid, influences the quality of final product.

The present invention may be further configured in a preferred embodiment as: the raw material feeding pipe in the reaction box is provided with a Y-shaped three-way pipe for connecting the two raw material feeding pipes, two openings of the three-way pipe are connected with the raw material feeding pipes, the other opening is vertically upward, and a blocking net is fixed at the opening.

Through adopting above-mentioned technical scheme, the setting up of three-way pipe makes acrylic acid and polymerization inhibitor collect in the three-way pipe, keeps off the setting up of net and makes acrylic acid and polymerization inhibitor carry out preliminary mixture in the three-way pipe.

The present invention may be further configured in a preferred embodiment as: the stirring shaft is internally provided with a cavity coaxial with the stirring shaft, the diameter of the cavity is gradually increased along the axial direction of the stirring shaft, a plurality of baffles abutted against the inner wall of the cavity are vertically fixed in the cavity, a material walking port penetrating through the baffles is formed in each baffle, the material walking port is formed in each baffle and is staggered along the axial direction of the stirring shaft, the three-way pipe is provided with one end of the blocking net and the inside of the stirring shaft, and a discharge port for raw materials to flow out of the cavity is formed in the larger end of the cavity.

Through adopting above-mentioned technical scheme, the mixed raw materials that flow out from the three-way pipe enters into the cavity, rotates along with the cavity together, carries out preliminary mixing to the raw materials, because the cavity is followed (mixing) shaft axis direction diameter crescent, the raw materials after being convenient for mix can flow out from the discharge gate.

The present invention may be further configured in a preferred embodiment as: the stirring shaft is rotatably connected with a rotating ring which is coaxial with the stirring shaft, the outer wall of the stirring shaft is provided with two limiting grooves which are coaxial with the stirring shaft, the inner walls of the two ends of the rotating ring are fixedly provided with limiting rings which are slidably clamped in the limiting grooves, a plurality of communicating holes which are communicated with the cavity are formed between the two limiting grooves, the outer wall of the rotating ring is fixedly provided with a connecting pipe which is communicated with the communicating holes, one end of the connecting pipe is fixed on the rotating ring, and the other end of the connecting pipe is connected with one end of the three-way pipe.

Through adopting above-mentioned technical scheme, the setting up of swivel becket makes the (mixing) shaft rotate for the swivel becket, guarantees that the three-way pipe position remains unchanged all the time, and the intercommunicating pore makes the raw materials can enter into the cavity smoothly, and the joint that the spacing ring slided is at the spacing inslot, avoids too much raw materials to flow from the joint portion of swivel becket and (mixing) shaft.

The present invention may be further configured in a preferred embodiment as: agitator tank upper end is fixed with the fixed pipe with inside intercommunication, be provided with on the fixed pipe with the coupling mechanism that main inlet pipe connects, coupling mechanism is including seting up the spread groove of fixed pipe outer wall, the joint has the connecting cylinder in the spread groove, connecting cylinder one end joint is in the spread groove, another end threaded connection is in on the main inlet pipe, main inlet pipe with be fixed with the sealing washer on the terminal surface of fixed pipe butt.

Through adopting above-mentioned technical scheme, main inlet pipe butt is on the sealing washer, through rotating the connecting cylinder, realizes the connection of fixed pipe and main inlet pipe, and the installation of the agitator tank of being convenient for is followed and is dismantled.

The present invention may be further configured in a preferred embodiment as: the fixed pipe terminal surface on seted up with the coaxial joint groove of fixed pipe, the sealing washer is located the joint inslot, main inlet pipe inserts the joint inslot and with the sealing washer butt.

Through adopting above-mentioned technical scheme, the joint inslot just with the sealing washer butt is inserted to main inlet pipe, has carried out further sealed between fixed pipe and the main inlet pipe, prevents that the raw materials from flowing from the joint portion.

The present invention may be further configured in a preferred embodiment as: the stirring box outer wall is fixed with the parcel the heat insulating box of stirring box, the heat insulating box with the intermediate layer intussuseption between the stirring box is filled with thermal-insulated cotton.

Through adopting above-mentioned technical scheme, thermal-insulated cotton setting is avoided leading to the inside high temperature of agitator tank because of with reation kettle apart from the undersize, makes acrylic acid oxidative polymerization.

The present invention may be further configured in a preferred embodiment as: the auxiliary stirring device comprises an auxiliary shaft connected in the reaction kettle in a rotating mode, the auxiliary shaft is vertically arranged, auxiliary blades in a spiral shape are fixed on the outer wall of the auxiliary shaft, the auxiliary stirring device further comprises a driving motor fixed to the bottom of the reaction kettle, and an output shaft of the driving motor penetrates through the bottom of the reaction kettle and is fixedly connected to the auxiliary shaft.

By adopting the technical scheme, the raw materials can react as soon as possible by the auxiliary stirring device, and the acrylic acid oxidative polymerization is avoided to a certain extent.

To sum up, the utility model discloses a following at least one useful technological effect:

1. introducing acrylic acid and a polymerization inhibitor into the stirring box from an original feeding pipe, controlling a motor to start, driving a stirring blade to rotate, fully mixing the two raw materials, avoiding stirring after the raw materials enter a high-temperature reaction kettle, and oxidizing and polymerizing part of the acrylic acid;

2. the three-way pipe is arranged to collect acrylic acid and polymerization inhibitor in the three-way pipe, and the baffle net is arranged to preliminarily mix the acrylic acid and the polymerization inhibitor in the three-way pipe.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the stirring device.

FIG. 3 is a schematic view of the structure of the rotating ring and the stirring shaft.

Fig. 4 is a schematic view of the structure of the connection mechanism.

In the figure, 1, a main feeding pipe; 2. an auxiliary feed pipe; 3. a stirring device; 4. an auxiliary stirring device; 5. a stirring box; 6. a raw material feeding pipe; 7. a one-way valve; 8. a partition plate; 9. a control box; 10. a reaction box; 11. controlling the motor; 12. a stirring shaft; 13. a stirring blade; 14. a three-way pipe; 15. blocking the net; 16. a cavity; 17. a baffle plate; 18. a material feeding port; 19. a discharge port; 20. a rotating ring; 21. a limiting groove; 22. a limiting ring; 23. a communicating hole; 24. a connecting pipe; 25. a fixed tube; 26. a connecting mechanism; 27. connecting grooves; 28. a connecting cylinder; 29. a seal ring; 30. a clamping groove; 31. a heat insulation box; 32. heat insulation cotton; 33. an auxiliary shaft; 34. an auxiliary blade; 35. the motor is driven.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the stirring mechanism of a reaction kettle disclosed by the utility model, comprising a main feeding pipe 1 and an auxiliary feeding pipe 2 which are arranged above the reaction kettle and communicated with the inside of the reaction kettle, the main feeding pipe 1 is introduced with a mixed raw material of acrylic acid and polymerization inhibitor, the auxiliary feeding pipe 2 is introduced with isooctanol, a stirring device 3 is arranged on the main feeding pipe 1, an auxiliary stirring device 4 is arranged in the reaction kettle, the stirring device 3 comprises a stirring box 5 connected on the main feeding pipe 1, the main feeding pipe 1 is communicated with the inside of the stirring box 5 above the stirring box 5, two raw feeding pipes 6 introduced with acrylic acid and polymerization inhibitor are connected on the bottom plate of the stirring box 5, a one-way valve 7 which enables the raw material to flow into the stirring box 5 is arranged on the raw feeding pipes 6 to prevent the raw material from flowing back, a baffle 8 is vertically arranged in the stirring box 5, the baffle 8 divides the, the stirring device 3 further comprises a control motor 11 arranged in the control box 9, an output shaft of the control motor 11 horizontally penetrates through the partition plate 8 and is connected with a stirring shaft 12 in the reaction box 10, and a plurality of stirring blades 13 are fixed on the stirring shaft 12.

Referring to fig. 2 and 3, the raw material feeding pipe 6 in the reaction box 10 is provided with a Y-shaped three-way pipe 14 connecting two raw material feeding pipes 6, two openings of the three-way pipe 14 are connected with the raw material feeding pipes 6, the other opening is vertically upward and is fixed with a blocking net 15 at the opening, a cavity 16 coaxial with the stirring shaft 12 is formed in the stirring shaft 12, the diameter of the cavity 16 is gradually increased from one side of the control motor 11 to the side away from the control motor 11, a plurality of baffle plates 17 abutted against the inner wall of the cavity 16 are vertically fixed in the cavity 16, a material feeding port 18 penetrating through the baffle plates 17 is formed in the baffle plates 17 along the axial direction of the stirring shaft 12, the plurality of material feeding ports 18 are arranged in a staggered mode along the axial line of the stirring shaft 12, one end of the three-way pipe 14, which is provided with the blocking net 15, is communicated with the cavity.

Referring to fig. 2 and 3, a rotating ring 20 coaxial with the stirring shaft 12 is rotatably connected to the stirring shaft 12, two limiting grooves 21 coaxial with the stirring shaft 12 are formed in the outer wall of the stirring shaft 12, limiting rings 22 slidably and fixedly clamped in the limiting grooves 21 are fixed to the inner walls of the two ends of the rotating ring 20, a plurality of communicating holes 23 communicated with the cavity 16 are formed between the two limiting grooves 21, a connecting pipe 24 communicated with the communicating holes 23 is fixed to the outer wall of the rotating ring 20, one end of the connecting pipe 24 is fixed to the rotating ring 20, and the other end of the connecting pipe is connected with the three-way pipe 14. The setting of rotating ring 20 makes (mixing) shaft 12 rotate for rotating ring 20, guarantees that three-way pipe 14 position remains unchanged all the time, and the intercommunicating pore 23 makes the raw materials can enter into cavity 16 smoothly, and spacing ring 22 slips the joint in spacing groove 21, prevents that the raw materials from the joint portion outflow of rotating ring 20 and (mixing) shaft 12, influences the efficiency of stirring.

Referring to fig. 1 and 4, agitator tank 5 upper end is fixed with the fixed pipe 25 with inside intercommunication, be provided with the coupling mechanism 26 of being connected with main inlet pipe 1 on fixed pipe 25, coupling mechanism 26 is including seting up the spread groove 27 at fixed pipe 25 outer wall, the joint has connecting cylinder 28 in the spread groove 27, connecting cylinder 28 one end joint is in spread groove 27, another end threaded connection is on main inlet pipe 1, set up the joint groove 30 coaxial with fixed pipe 25 on fixed pipe 25 terminal surface, be fixed with sealing washer 29 in joint groove 30, main inlet pipe 1 inserts in joint groove 30 and with sealing washer 29 butt, connecting cylinder 28 threaded connection is on main inlet pipe 1, realize fixed pipe 25 and main inlet pipe 1's connection.

Referring to fig. 1 and 2, a heat insulation box 31 wrapping the agitation tank 5 is fixed to an outer wall of the agitation tank 5, and heat insulation cotton 32 is filled in an interlayer between the heat insulation box 31 and the agitation tank 5, so that the agitation tank 5 is close to the reaction vessel, thereby preventing the acrylic acid from being oxidatively polymerized due to an excessively high temperature in the agitation tank 5 caused by heat transfer.

Referring to fig. 1, auxiliary stirring device 4 is including rotating auxiliary shaft 33 of connection in reation kettle, auxiliary shaft 33 is vertical setting, be fixed with on auxiliary shaft 33 outer wall to be spiral helicine auxiliary blade 34, auxiliary stirring device 4 is still including fixing the driving motor 35 in the reation kettle bottom, driving motor 35 output shaft runs through reation kettle bottom and fixed connection on auxiliary shaft 33, driving motor 35 starts auxiliary blade 34 and rotates, make the raw materials can react as early as possible, acrylic acid oxidative polymerization has been avoided to a certain extent.

The implementation principle of the embodiment is as follows: acrylic acid and polymerization inhibitor flow into the inside that three-way pipe 14 entered into (mixing) shaft 12 from former inlet pipe 6, control motor 11 starts, drive (mixing) shaft 12 and rotate, and the raw materials in (mixing) shaft 12 flows out from discharge gate 19 through walking material mouth 18 in proper order to carry out further stirring under stirring vane 13's effect, prevent to make the partial oxidative polymerization of acrylic acid, during the raw materials of misce bene were sent into reation kettle, carry out esterification reaction under auxiliary vane 34's effect.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a stirring mechanism of reaction kettle, including set up in the reaction kettle top and with main inlet pipe (1) and vice inlet pipe (2) of the inside intercommunication of reaction kettle, set up agitating unit (3) on main inlet pipe (1) and set up supplementary agitating unit (4) in reaction kettle, its characterized in that: the stirring device (3) comprises a stirring box (5) connected onto a main feeding pipe (1), the main feeding pipe (1) is communicated with the inside of the stirring box (5) above the stirring box (5), a bottom plate of the stirring box (5) is connected with two raw feeding pipes (6) for introducing acrylic acid and polymerization inhibitor, a one-way valve (7) for enabling raw materials to flow into the stirring box (5) is arranged on the raw feeding pipe (6), a partition plate (8) is vertically arranged in the stirring box (5), the stirring box (5) is divided into a control box (9) and a reaction box (10) by the partition plate (8), the stirring device (3) further comprises a control motor (11) arranged in the control box (9), an output shaft of the control motor (11) horizontally penetrates through the partition plate (8) and a stirring shaft (12) is connected in the reaction box (10), a plurality of stirring blades (13) are fixed on the stirring shaft (12).

2. The stirring mechanism of a reaction kettle according to claim 1, characterized in that: the raw material feeding pipe (6) positioned in the reaction box (10) is provided with a Y-shaped three-way pipe (14) connected with the two raw material feeding pipes (6), two openings of the three-way pipe (14) are connected with the raw material feeding pipes (6), the other opening is vertically upward, and a blocking net (15) is fixed at the opening.

3. The stirring mechanism of a reaction kettle according to claim 2, characterized in that: the stirring shaft (12) is internally provided with a cavity (16) coaxial with the stirring shaft (12), the cavity (16) is arranged along the diameter of the stirring shaft (12) in the axial direction, a plurality of baffle plates (17) abutted against the inner wall of the cavity (16) are vertically fixed in the cavity (16), a material passing port (18) penetrating through the baffle plates (17) is formed in the baffle plates (17), the material passing port (18) is arranged in a plurality of staggered positions along the axial line of the stirring shaft (12), a three-way pipe (14) is provided with one end of a baffle net (15) and the stirring shaft (12) is internally communicated, and a material outlet (19) for raw materials to flow out of the cavity (16) is formed in the larger end of the diameter of the cavity (16).

4. The stirring mechanism of a reaction kettle according to claim 3, characterized in that: the stirring shaft (12) is rotatably connected with a rotating ring (20) coaxial with the stirring shaft (12), two limiting grooves (21) coaxial with the stirring shaft (12) are formed in the outer wall of the stirring shaft (12), two limiting rings (22) which are slidably clamped in the limiting grooves (21) are fixed at two ends of the rotating ring (20), a plurality of communicating holes (23) communicated with the cavity (16) are formed between the limiting grooves (21), a connecting pipe (24) communicated with the communicating holes (23) is fixed on the outer wall of the rotating ring (20), one end of the connecting pipe (24) is fixed on the rotating ring (20), and the other end of the connecting pipe is connected with the three-way pipe (14).

5. The stirring mechanism of a reaction kettle according to claim 1, characterized in that: agitator tank (5) upper end is fixed with fixed pipe (25) with inside intercommunication, be provided with on fixed pipe (25) with coupling mechanism (26) that main inlet pipe (1) is connected, coupling mechanism (26) are including seting up fixed pipe (25) outer wall's spread groove (27), the joint has connecting cylinder (28) in spread groove (27), connecting cylinder (28) one end joint is in spread groove (27), other end threaded connection is in on main inlet pipe (1), main inlet pipe (1) with be fixed with sealing washer (29) on the terminal surface of fixed pipe (25) butt.

6. The stirring mechanism of a reaction kettle according to claim 5, wherein: fixed pipe (25) terminal surface on seted up with fixed pipe (25) coaxial joint groove (30), sealing washer (29) are located in joint groove (30), main inlet pipe (1) are inserted in joint groove (30) and with sealing washer (29) butt.

7. The stirring mechanism of a reaction kettle according to claim 1, characterized in that: the stirring box is characterized in that a heat insulation box (31) wrapping the stirring box (5) is fixed on the outer wall of the stirring box (5), and heat insulation cotton (32) is filled in an interlayer between the heat insulation box (31) and the stirring box (5).

8. The stirring mechanism of a reaction kettle according to claim 1, characterized in that: supplementary agitating unit (4) are including rotating auxiliary shaft (33) of connection in reation kettle, auxiliary shaft (33) are vertical setting, be fixed with on auxiliary shaft (33) outer wall and be spiral helicine auxiliary blade (34), supplementary agitating unit (4) are still including fixing driving motor (35) in the reation kettle bottom, driving motor (35) output shaft runs through reation kettle bottom and fixed connection are in on auxiliary shaft (33).