CN219174432U

CN219174432U - Multistage stirring device for processing polypropylene powder

Info

Publication number: CN219174432U
Application number: CN202222309527.5U
Authority: CN
Inventors: 周结兵; 廖良平
Original assignee: Shandong Kaibo New Material Technology Co ltd
Current assignee: Shandong Kaibo New Material Technology Co ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2023-06-13
Anticipated expiration: 2032-09-01

Abstract

The utility model discloses a multistage stirring device for processing polypropylene powder, which belongs to the technical field of polypropylene powder processing and aims at the problems that when polypropylene powder is subjected to gas reaction in a reaction tank, the diffusion effect of propylene raw materials is poor, a high-activity catalyst is easy to accumulate, and the discharging efficiency of the polypropylene powder after generation is low; according to the utility model, the air inlet pipe and the plurality of gas phase branch pipes are synchronously rotated by driving the stirring motor, so that the stirring and diffusion effect of propylene raw materials conveyed by the air inlet pipe in the reaction tank is improved, the spiral blades are spirally lifted in the holding cylinder, the high-activity catalyst in the holding cylinder is spirally lifted and stirred, and the phenomenon of accumulation of the catalyst in the holding cylinder is prevented.

Description

Multistage stirring device for processing polypropylene powder

Technical Field

The utility model belongs to the technical field of polypropylene powder processing, and particularly relates to a multistage stirring device for polypropylene powder processing.

Background

Polypropylene is a polymer obtained by addition polymerization of propylene, is a white wax-like material, has a transparent and light appearance, is resistant to corrosion by acids, alkalis, salt solutions and various organic solvents at a temperature of 80 ℃ or below, and is decomposed under the action of high temperature and oxidation.

During preparation and processing of polypropylene particles, high-purity propylene is generally used as a main raw material, propylene is used as a comonomer, a high-activity catalyst is adopted to generate polypropylene powder through gas phase reaction at 62-80 ℃ and under the pressure of less than 4MPa, and then the polypropylene powder is formed through drying, mixing, extrusion, granulation, screening and homogenization, so that the polypropylene powder is generally used for improving the contact effect of the propylene raw material and the catalyst through a stirring device at present, and then the reaction rate of the polypropylene powder during gas phase reaction is improved, but the following defects are found in practical application:

(1) when the propylene raw material is conveyed into the reaction tank for gas phase reaction, the diffusion efficiency of the propylene raw material in the reaction tank is low, so that the gas phase reaction rate of the polypropylene powder is affected;

(2) when the high-activity catalyst is added in the reaction tank, the high-activity catalyst is easy to generate local accumulation phenomenon, so that the contact effect of the propylene raw material and the high-activity catalyst is affected, and the reaction rate is reduced;

(3) after the polypropylene powder is generated by gas phase reaction, the polypropylene powder is easy to gather at the top of the reaction tank, and the polypropylene powder is easy to fall off after gathering at the top, so that the discharging effect of the polypropylene powder is affected.

Therefore, a multistage stirring device for processing polypropylene powder is needed, and the problems that the diffusion effect of propylene raw materials is poor, a high-activity catalyst is easy to accumulate and the discharging efficiency of the polypropylene powder after generation is low when the polypropylene powder is subjected to gas reaction in a reaction tank in the prior art are solved.

Disclosure of Invention

The utility model aims to provide a multistage stirring device for processing polypropylene powder, which aims to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a polypropylene powder processing is with multistage agitating unit, includes the retort and with the retort lid closed cover, the top surface center department of retort rotates and runs through the intake pipe that has extended to the retort inner wall, the support is installed to the top surface of cover, agitator motor is installed to the inner wall of support, agitator motor's output with the top surface of intake pipe is all coaxial fixed with the driving pulley, two driving pulley's surface is provided with driving belt, the bottom surface intercommunication of intake pipe has a plurality of gas phase minutes that are evenly distributed, the bottom surface of cover is fixed with four and is evenly distributed holds a section of thick bamboo, four hold the inside of section of thick bamboo be provided with intake pipe matched with stirring elevating system, four hold the surface of section of thick bamboo be fixed with the discharge plate jointly, the top surface of discharge plate be provided with intake pipe matched with stirring discharge mechanism, the periphery of discharge plate be provided with the guide ring of retort surface intercommunication, the surface intercommunication of guide ring has the discharging pipe.

In the scheme, it is to be noted that, stirring elevating system include with the driving gear that the fastening of intake pipe top surface cup jointed, every hold the inside of section of thick bamboo all be provided with the pivot that the cover rotated and run through, hold the inside of section of thick bamboo be provided with the helical blade that the fastening of pivot surface cup jointed, the top of cover be provided with the driven gear that the fastening of pivot top surface cup jointed, the periphery of driving gear and four all meshing of driven gear are connected.

It is further worth to say that the peripheral diameter of helical blade is less than the inner wall diameter of holding section of thick bamboo, the top surface of holding section of thick bamboo has seted up the material passageway of throwing.

It should be further noted that the stirring discharging mechanism comprises a collecting cover fixed at the center of the discharging disc, an annular groove provided with the top surface of the discharging disc is arranged at the periphery of the collecting cover, a plurality of stirring rods fixed with the outer surface of the air inlet pipe are arranged in the annular groove, collecting ring grooves are arranged at the periphery of the top surface of the discharging disc, and a plurality of discharging grooves which are uniformly distributed are communicated between the collecting ring grooves and the annular groove.

As a preferred implementation mode, the outer surface of the bottom of the stirring rod is in fit with the inner wall of the annular groove, and the outer surfaces of the stirring rod and the collecting cover are matched cambered surfaces.

As a preferred implementation mode, the vertical section of the gas phase branch pipe is distributed in an L shape, the vertical section of the gas phase branch pipe is positioned at the periphery of the containing cylinder, and a plurality of uniformly distributed air outlet holes are formed in the outer surface of the air inlet pipe.

Compared with the prior art, the multistage stirring device for processing the polypropylene powder provided by the utility model at least comprises the following beneficial effects:

(1) Through agitator motor's drive to make intake pipe and a plurality of gaseous phase be in charge of and rotate in step, thereby improve the stirring diffusion effect of propylene raw materials in the retort that carries through the intake pipe, form the preliminary stirring processing of propylene raw materials in the retort, thereby improve the speed that propylene raw materials produced polypropylene powder through the catalytic reaction of catalyst, the pivot drives helical blade and carries out the spiral in holding the section of thick bamboo simultaneously and rise stirring processing to holding the high activity catalyst in the section of thick bamboo, thereby prevent that the catalyst from taking place to pile up the phenomenon in holding the section of thick bamboo, thereby further improve the gaseous phase reaction rate of propylene raw materials under the abundant contact with the catalyst.

(2) The polypropylene powder gradually rises to the current collecting cover in the reaction tank from the bottom of the reaction tank, so that partial polypropylene powder reaches the current collecting ring groove on the discharge disc, and meanwhile, the stirring rod synchronously rotates along with the air inlet pipe, so that the polypropylene powder entering the current collecting ring groove is subjected to rotation stirring treatment, the stirring discharge effect of the polypropylene powder in the current collecting ring groove can be improved, and the polypropylene powder can be stirred and crushed to a certain extent, so that the discharge effect of the polypropylene powder is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal partial structure of the reaction tank of the present utility model;

FIG. 3 is a schematic view of a part of the structure of the stirring and lifting mechanism of the utility model;

FIG. 4 is an enlarged schematic view of the area A in FIG. 3 according to the present utility model;

fig. 5 is an enlarged view of the area B in fig. 3 according to the present utility model.

In the figure: 1. a reaction tank; 2. a can lid; 3. an air inlet pipe; 4. a bracket; 5. a stirring motor; 6. a transmission belt wheel; 7. a drive belt; 8. a gas phase branch pipe; 9. a containing barrel; 10. a stirring and lifting mechanism; 101. a drive gear; 102. a rotating shaft; 103. a helical blade; 104. a driven gear; 11. a discharge tray; 12. a stirring and discharging mechanism; 121. a manifold cover; 122. an annular groove; 123. a stirring rod; 124. a collecting ring groove; 125. a discharge chute; 13. a material guiding ring; 14. a discharge pipe; 15. a feeding channel; 16. and an air outlet hole.

Detailed Description

The utility model is further described below with reference to examples.

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, and it is apparent that the described embodiments are some, but not all, embodiments of the present utility model, and all other embodiments obtained by persons of ordinary skill in the art without inventive labor based on the described embodiments of the present utility model are included in the scope of protection of the present utility model.

The following examples are illustrative of the present utility model but are not intended to limit the scope of the utility model. The conditions in the examples can be further adjusted according to specific conditions, and simple modifications of the method of the utility model under the premise of the conception of the utility model are all within the scope of the utility model as claimed.

Referring to fig. 1-5, the utility model provides a multistage stirring device for processing polypropylene powder, which comprises a reaction tank 1 and a tank cover 2 covered with the reaction tank 1, wherein an air inlet pipe 3 extending to the inner wall of the reaction tank 1 is rotatably penetrated at the center of the top surface of the reaction tank 1, the air inlet pipe 3 is used for communicating and conveying propylene gas phase raw materials conveyed by the outside, a bracket 4 is arranged on the top surface of the tank cover 2, a stirring motor 5 is arranged on the inner wall of the bracket 4, the output end of the stirring motor 5 and the top outer surface of the air inlet pipe 3 are coaxially fixed with driving pulleys 6, the outer surfaces of the two driving pulleys 6 are provided with driving belts 7, the bottom surface of the air inlet pipe 3 is communicated with a plurality of uniformly distributed gas phase branched pipes 8, the bottom surface of the tank cover 2 is fixed with four uniformly distributed holding cylinders 9, the inside of the four holding cylinders 9 is provided with a stirring lifting mechanism 10 matched with the air inlet pipe 3, wherein the four holding cylinders 9 are internally and equivalently provided with high-activity catalysts, the high-activity catalysts are spirally lifted in the holding cylinders 9 by the action of the stirring lifting mechanism 10, so that high-activity raw materials are dispersed in the holding cylinders 9 at various heights, the high-activity catalysts are prevented from piling up in the holding cylinders 9, the catalytic gas phase reaction rate of propylene raw materials through the high-activity catalysts is improved, the outer surfaces of the four holding cylinders 9 are jointly fixed with a discharge plate 11, the top surface of the discharge plate 11 is provided with a stirring discharging mechanism 12 matched with the air inlet pipe 3, the periphery of the discharge plate 11 is provided with a guide ring 13 communicated with the outer surface of the reaction tank 1, the outer end of the guide ring 13 is communicated with a discharge pipe 14, the outer end of the guide ring 13 is communicated with a cyclone separator, is used for separating and filtering the polypropylene powder produced by the gas phase reaction.

As further shown in fig. 3, fig. 4 and fig. 5, it is worth specifically explaining that the stirring and lifting mechanism 10 includes a driving gear 101 tightly sleeved on the top outer surface of the air inlet pipe 3, a rotating shaft 102 rotatably penetrating through the tank cover 2 is provided inside each of the accommodating cylinders 9, a spiral blade 103 tightly sleeved on the outer surface of the rotating shaft 102 is provided inside the accommodating cylinders 9, a driven gear 104 tightly sleeved on the top outer surface of the rotating shaft 102 is provided above the tank cover 2, the periphery of the driving gear 101 is tightly meshed with the four driven gears 104, the peripheral diameter of the spiral blade 103 is smaller than the diameter of the inner wall of the accommodating cylinders 9, a feeding channel 15 is provided on the top outer surface of the accommodating cylinders 9, and the peripheral diameter of the spiral blade 103 is smaller than the diameter of the accommodating cylinders 9, so that when the high activity catalyst is spirally lifted, a part of high activity catalyst raw material is lifted, and accordingly the distribution condition of the high activity catalyst raw material in each height of the accommodating cylinders 9 can be ensured, and the catalytic reaction rate of the high activity catalyst to the high activity catalyst raw material is improved when the gas phase reaction occurs.

The scheme comprises the following working processes: when the polypropylene powder is polymerized, the high-purity propylene raw material enters through the air inlet pipe 3 and is subjected to diffusion treatment in the reaction tank 1 through the plurality of gas phase branch pipes 8, and the diffused propylene raw material is contacted with the high-activity catalyst placed in the holding cylinder 9, so that the propylene raw material is subjected to gas phase reaction under the catalysis of the high-activity catalyst to produce the polypropylene powder; through the drive of agitator motor 5 to through driving pulley 6 and driving belt 7's transmission, thereby make intake pipe 3 and driving gear 101 synchronous rotation, intake pipe 3 drives the weather and is in the synchronous rotation of being in the pivoted, thereby improve the diffusion effect of propylene raw materials in retort 1 that is carried through intake pipe 3, thereby improve the contact effect of propylene raw materials and high activity catalyst to a certain extent, through driving gear 101 and four driven gear 104's meshing transmission, thereby make four pivots 102 and helical blade 103 carry out helical rotation in respective holding section of thick bamboo 9, thereby make the high activity catalyst that holds in the section of thick bamboo 9 belong to local spiral ascending state, effectively prevent that high activity catalyst from taking place to pile up the phenomenon in holding section of thick bamboo 9, thereby further guarantee the gaseous phase reaction rate of propylene raw materials through high activity catalyst in retort 1.

The working process can be as follows: through the drive of agitator motor 5 to make intake pipe 3 and a plurality of gaseous phase be in charge of 8 rotate in step, thereby improve the diffusion effect in retort 1 of propylene raw materials that carries through intake pipe 3, and through the rotation of gaseous phase be in charge of 8, make the propylene raw materials that rotates the diffusion can carry out better contact with the high activity catalyst that holds in the section of thick bamboo 9, thereby improve the speed that propylene raw materials produced polypropylene powder through the catalytic reaction of catalyst, simultaneously pivot 102 drives helical blade 103 and carries out spiral rising in holding section of thick bamboo 9, thereby prevent that the catalyst from taking place to pile up the phenomenon in holding section of thick bamboo 9, thereby further improve the gaseous phase reaction rate of propylene raw materials under the abundant contact with the catalyst.

Further, as shown in fig. 4, it is worth specifically explaining that the stirring and discharging mechanism 12 includes a collecting cover 121 fixed at the center of the discharging tray 11, an annular groove 122 provided with the top surface of the discharging tray 11 is provided at the periphery of the collecting cover 121, a plurality of stirring rods 123 fixed with the outer surface of the air inlet pipe 3 are provided inside the annular groove 122, a collecting annular groove 124 is provided at the periphery of the top surface of the discharging tray 11, a plurality of discharging grooves 125 which are uniformly distributed are communicated between the collecting annular groove 124 and the annular groove 122, during specific operation, propylene raw materials react under the catalysis of the catalyst to generate polypropylene powder, the polypropylene powder gradually rises to the collecting cover 121 in the reaction tank 1 from the bottom of the reaction tank 1, so that partial polypropylene powder reaches the collecting annular groove 124 on the discharging tray 11, and simultaneously the stirring rods 123 synchronously rotate along with the air inlet pipe 3, thereby stirring and discharging effects of the polypropylene powder in the collecting annular groove 124 can be improved, stirring and crushing the polypropylene powder to a certain extent can be carried out, the polypropylene powder after stirring and discharging treatment enters the annular groove 122, the polypropylene powder after stirring and discharging treatment enters the annular groove 125, the polypropylene powder is gradually filtered and discharged and separated by the cyclone filter through the effect of the guide ring 13 and the polypropylene filter 14.

Further, as shown in fig. 4, it is worth specifically describing that the outer surface of the bottom of the stirring rod 123 is in fit with the inner wall of the annular groove 122, and the outer surfaces of the stirring rod 123 and the collecting cover 121 are arc surfaces.

Further, as shown in fig. 2 and fig. 3, it is worth specifically explaining that the vertical section of the gas-phase branched pipe 8 is L-shaped, the vertical section of the gas-phase branched pipe 8 is located at the periphery of the containing cylinder 9, the outer surface of the gas inlet pipe 3 is provided with a plurality of gas outlet holes 16 which are uniformly distributed, the gas outlet holes 16 are arranged, so that the propylene raw material entering through the gas inlet pipe 3 can be centrally diffused through the gas outlet holes 16, and the periphery of the propylene raw material is centrally diffused through the gas-phase branched pipe 8, thereby further improving the contact effect of the propylene raw material and the catalyst, and further effectively improving the gas-phase reaction rate of the propylene raw material.

To sum up: through the drive of agitator motor 5 to make intake pipe 3 and a plurality of gaseous phase be in charge of 8 rotate in step, thereby improve the stirring diffusion effect of propylene raw materials in retort 1 that carries through intake pipe 3, form the preliminary stirring processing to propylene raw materials in retort 1, thereby improve the speed that propylene raw materials produced polypropylene powder through the catalytic reaction of catalyst, simultaneously pivot 102 drive helical blade 103 carry out spiral and rise in holding section of thick bamboo 9, carry out spiral and rise stirring processing to the high activity catalyst in holding section of thick bamboo 9, thereby prevent that the catalyst from taking place to pile up the phenomenon in holding section of thick bamboo 9, thereby further improve the gaseous phase reaction rate of propylene raw materials under abundant contact with the catalyst, simultaneously puddler 123 rotates along with intake pipe 3 in step, thereby rotate stirring processing to the polypropylene powder that gets into in the current collecting ring groove 124, both can improve the stirring ejection of compact effect of polypropylene powder in current collecting ring groove 124.

The stirring motor 5 can be purchased in the market, and the stirring motor 5 is provided with a power supply, which belongs to the mature technology in the field and is fully disclosed, so that the description is not repeated.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs, the terms "comprising" or "comprises" and the like as used herein shall mean that the element or article preceding the term encompasses the element or article listed after the term and equivalents thereof without excluding other elements or articles, and that the terms "connected" or "connected" and the like shall not be limited to physical or mechanical connections, but shall also include electrical connections, whether direct or indirect, "upper", "lower", "left", "right", etc. are merely intended to indicate relative positional relationships that may also be correspondingly altered when the absolute position of the object being described is altered.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multistage agitating unit is used in polypropylene powder processing, includes retort (1) and with retort (1) lid closed cover (2), its characterized in that, the top surface center department rotation of retort (1) runs through has intake pipe (3) that extend to retort (1) inner wall, support (4) are installed to the top surface of cover (2), agitator motor (5) are installed to the inner wall of support (4), the output of agitator motor (5) with the top surface of intake pipe (3) is all coaxial fixed with driving pulley (6), two the surface of driving pulley (6) is provided with driving belt (7), the bottom surface intercommunication of intake pipe (3) has a plurality of gas phase minutes pipes (8) that are evenly distributed, the bottom surface of cover (2) is fixed with four holding section of thick bamboo (9) that are evenly distributed, four the inside of holding section of thick bamboo (9) is provided with intake pipe (3) matched with stirring elevating system (10), four the surface of holding section of thick bamboo (9) is fixed with ejection of thick bamboo (11) jointly, the surface of cloth (11) that is provided with ejection of table (11), the surface of cloth (11) is provided with driving belt (7) is located to the bottom surface intercommunication of intake pipe (3), the outer surface of the guide ring (13) is communicated with a discharge pipe (14).

2. The multistage stirring device for processing polypropylene powder according to claim 1, wherein: stirring elevating system (10) include with driving gear (101) that intake pipe (3) top surface fastening cup jointed, every the inside of holding section of thick bamboo (9) all be provided with lid (2) rotate pivot (102) that run through, the inside of holding section of thick bamboo (9) be provided with helical blade (103) that pivot (102) surface fastening cup jointed, the top of lid (2) be provided with driven gear (104) that pivot (102) top surface fastening cup jointed, the periphery of driving gear (101) and four driven gear (104) all mesh and are connected.

3. The multistage stirring device for processing polypropylene powder according to claim 2, wherein: the peripheral diameter of the spiral blade (103) is smaller than the diameter of the inner wall of the containing barrel (9), and a feeding channel (15) is formed in the outer surface of the top end of the containing barrel (9).

4. The multistage stirring device for processing polypropylene powder according to claim 1, wherein: stirring discharge mechanism (12) include with discharge plate (11) center department fixed mass flow cover (121), the periphery of mass flow cover (121) is provided with annular channel (122) of seting up discharge plate (11) top surface, the inside of annular channel (122) be provided with a plurality of all with intake pipe (3) surface fixed puddler (123), the top surface periphery of discharge plate (11) is provided with mass flow annular groove (124), mass flow annular groove (124) with communicate between annular channel (122) and have a plurality of blown down tanks (125) that are evenly distributed.

5. The multistage stirring device for processing polypropylene powder according to claim 4, wherein: the bottom outer surface of stirring rod (123) with the inner wall of ring channel (122) is the laminating setting, stirring rod (123) with the surface of collector cap (121) is the cambered surface of looks adaptation.

6. The multistage stirring device for processing polypropylene powder according to claim 1, wherein: the vertical section of the gas phase branch pipe (8) is distributed in an L shape, the vertical section of the gas phase branch pipe (8) is positioned at the periphery of the containing barrel (9), and a plurality of uniformly distributed air outlet holes (16) are formed in the outer surface of the air inlet pipe (3).