CN215389303U

CN215389303U - Polymeric kettle for polypropylene film production

Info

Publication number: CN215389303U
Application number: CN202121927239.5U
Authority: CN
Inventors: 贺追
Original assignee: Guangzhou Yunmei Packaging Products Co ltd
Current assignee: Foshan Essence Daily Commodities Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-01-04
Anticipated expiration: 2031-08-17

Abstract

The utility model belongs to the technical field of polymerization kettles, and particularly discloses a polymerization kettle for producing a polypropylene film, which comprises a shell, wherein a motor mounting rack is fixedly arranged at the top end of the shell, a motor is fixedly arranged at the top end of the motor mounting rack, an inner cavity is arranged inside the shell, a rotating shaft is arranged inside the inner cavity, penetrates through the shell and extends to the inside of the motor mounting rack to be fixedly connected with an output shaft of the motor, the viscosity is high during the polymerization reaction of polypropylene, the polypropylene is easy to adhere to the inner wall of the polymerization kettle, a non-stick layer is arranged inside the shell, the polypropylene is not adhered to the inner wall of the polymerization kettle by coating a non-stick material, the polypropylene is not smooth and easy to block during discharging, a telescopic rod is arranged at the top of a discharging port, a spiral blade is arranged on the outer surface of the bottom end of the telescopic rod, the spiral blade stretches out and draws back at the discharging port, and rotates to ensure that the polymerized polypropylene is not easy to block during discharging, the potential safety hazard is avoided.

Description

Polymeric kettle for polypropylene film production

Technical Field

The utility model relates to the technical field of polymerization kettles, in particular to a polymerization kettle for producing a polypropylene film.

Background

The main equipment for preparing high molecular compound. Typically a vertical cylindrical autoclave, with a jacket for heating or cooling by steam or cold water. For emulsion polymerization, a stainless steel horizontal paddle stirrer was built in. The outer wall of the kettle is usually made of carbon steel, and is lined with stainless steel and enamel. During polymerization, the single-kettle intermittent production or multi-kettle series continuous production can be realized. The polymerization reactant enters the upper part of the next kettle from the lower part of one kettle.

During polymerization reaction of polypropylene in a polymerization kettle, the polymer has high molecular weight and high viscosity, polymerization reaction heat is not easy to be led out, the wall is easy to hang, and the polymerization kettle is easy to block during discharging, so that local overheating or temperature runaway of the polymerization kettle is caused, and explosion is easy to occur.

Accordingly, those skilled in the art have provided a polymerizer for producing a polypropylene film, which solves the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a polymerization kettle for producing a polypropylene film, which solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

a polymeric kettle for producing polypropylene films comprises a shell, wherein a motor mounting rack is fixedly arranged at the top end of the shell, a motor is fixedly arranged at the top end of the motor mounting rack, an inner cavity is formed in the shell, a rotating shaft is arranged in the inner cavity, the rotating shaft penetrates through the shell and extends into the motor mounting rack to be fixedly connected with an output shaft of the motor, a shaft seal is arranged at the joint of the output shaft of the motor and the motor mounting rack, two fixing pins are arranged on the outer surface of the rotating shaft, the fixing pins are fixedly connected with the rotating shaft in a threaded manner, a first frame type stirring paddle is arranged on the outer surface of the rotating shaft and is fixedly connected with the rotating shaft through the fixing pins, a second frame type stirring paddle is sleeved on the outer surface of the rotating shaft, a sleeve is arranged in the second frame type stirring paddle, the rotating shaft is fixedly connected with a connecting shaft through the sleeve, the outer surface of the connecting shaft is fixedly provided with a second frame type stirring paddle, the bottom end of the connecting shaft is provided with a telescopic rod, and the outer surface of the telescopic rod is fixedly provided with a helical blade.

As a still further scheme of the utility model: the inside of shell sets firmly the zone of heating, the zone of heating inboard sets firmly not adhesive layer.

As a still further scheme of the utility model: the discharge gate has been seted up to the bottom of shell, the bottom of discharge gate is equipped with the closing cap, the closing cap with the shell is articulated fixed.

As a still further scheme of the utility model: a plurality of evenly distributed feed inlets are seted up to the top of shell, a plurality of the top of feed inlet is equipped with corresponding top cap, the top cap with the feed inlet spiro union is fixed.

As a still further scheme of the utility model: the bottom end of the shell is provided with a disc type heat exchange tube, and the disc type heat exchange tube penetrates through the shell and extends to the inside of the shell.

As a still further scheme of the utility model: an inner cooling pipe is arranged on one side of the outer shell and penetrates through the outer shell and extends to the inside of the outer shell.

As a still further scheme of the utility model: the bottom of shell sets firmly a plurality of stabilizer blade.

Compared with the prior art, the utility model has the beneficial effects that:

1. during the polypropylene polymerization reaction, the viscosity is high, the polypropylene is easy to adhere to the inner wall of a polymerization kettle, a non-adhesive layer is arranged inside the shell, the polypropylene is not adhered to the inner wall of the polymerization kettle by coating a non-adhesive material, meanwhile, during the discharging, the polypropylene is not smooth and easy to block due to high viscosity, a telescopic rod is arranged at the top of the discharging port, a spiral blade is arranged on the outer surface of the bottom end of the telescopic rod, the telescopic rod stretches out and draws back at the discharging port, and the spiral blade rotates to enable the polymerized polypropylene not to easily block during the discharging, so that the potential safety hazard is avoided, and the practicability is improved;

2. two frame type stirring paddles are arranged in the polymerization kettle and distributed in a cross shape, and materials with different weights and viscosities are fully mixed and stirred in high-viscosity liquid, so that the materials strongly flow, the heat transfer rate and the mass transfer rate are improved, and the power consumption is reduced in the same stirring effect.

Drawings

FIG. 1 is a schematic structural view of a polymerizer for producing a polypropylene film;

FIG. 2 is a schematic top view of a first stirring blade and a second stirring blade in a polymerizer for producing a polypropylene film;

FIG. 3 is a schematic perspective view of a retractable rod and a helical blade in a polymerizer for producing a polypropylene film;

FIG. 4 is a schematic view of the overall structure of a polymerization vessel for producing a polypropylene film.

In the figure: 1. a housing; 11. a heating layer; 111. an inner cavity; 12. a support leg; 13. a non-stick layer; 14. a motor mounting bracket; 141. shaft sealing; 15. sealing the cover; 16. a feed inlet; 17. a top cover; 18. a discharge port; 2. a motor; 3. a rotating shaft; 31. a sleeve; 32. a connecting shaft; 33. a first frame type stirring paddle; 34. a second frame type stirring paddle; 35. a telescopic rod; 351. a helical blade; 36. a fixing pin; 4. a disc type heat exchange tube; 5. an inner cooling tube.

Detailed Description

Referring to fig. 1 to 4, in the embodiment of the present invention, a polymerizer for producing polypropylene film comprises a housing 1, a motor mounting rack 14 is fixedly disposed at a top end of the housing 1, a motor 2 is fixedly disposed at a top end of the motor mounting rack 14, an inner cavity 111 is disposed inside the housing 1, a rotating shaft 3 is disposed inside the inner cavity 111, the rotating shaft 3 penetrates through the housing 1 and extends into the motor mounting rack 14 to be fixedly connected with an output shaft of the motor 2, a shaft seal 141 is disposed at a connection position between the output shaft of the motor 2 and the motor mounting rack 14, two fixing pins 36 are disposed on an outer surface of the rotating shaft 3, the fixing pins 36 are fixedly connected with the rotating shaft 3 in a threaded manner, a first frame-type stirring paddle 33 is disposed on an outer surface of the rotating shaft 3, a second frame-type stirring paddle 34 is sleeved on an outer surface of the rotating shaft 3, a sleeve 31 is disposed inside the second frame-type stirring paddle 34, the rotating shaft 3 is fixedly connected with the connecting shaft 32 through the sleeve 31, the outer surface of the connecting shaft 32 is fixedly provided with a second frame type stirring paddle 34, the bottom end of the connecting shaft 32 is provided with a telescopic rod 35, and the outer surface of the telescopic rod 35 is fixedly provided with a helical blade 351.

In the embodiment, through the rotating shaft 3 arranged in the inner cavity 111, the first frame type stirring paddle 33 and the second frame type stirring paddle 34 can be driven by the motor 2, the first frame type stirring paddle 33 is fixedly connected with the rotating shaft 3 through the fixing pin 36, the centers of two ends of the first frame type stirring paddle 33 are provided with the connecting shafts 32, the outer surface of the connecting shafts 32 is sleeved with the sleeve 31, the outer surface of the sleeve 31 is provided with the second frame type stirring paddle 34, the two frame type stirring paddles are distributed in a cross shape, materials with different weights and viscosities are fully mixed and stirred in high-viscosity liquid, the materials strongly flow, the heat transfer rate and the mass transfer rate are improved, in the same stirring effect, the power consumption is reduced, wherein the telescopic rod 35 at the bottom end of the connecting shaft 32 can stretch out and draw back at the discharge port 18, and the helical blades 351 rotate to enable the polymerized polypropylene not to easily block during discharging, the potential safety hazard is avoided.

In fig. 1: the interior of the shell 1 is fixedly provided with a heating layer 11, the inner side of the heating layer 11 is fixedly provided with an anti-sticking layer 13, the bottom end of the shell 1 is provided with a discharge hole 18, the bottom end of the discharge hole 18 is provided with a sealing cover 15, the sealing cover 15 is hinged and fixed with the shell 1, the bottom end of the shell 1 is provided with a disc type heat exchange tube 4, the disc type heat exchange tube 4 penetrates through the shell 1 and extends to the interior of the shell 1, one side of the shell 1 is provided with an inner cooling tube 5, the inner cooling tube 5 penetrates through the shell 1 and extends to the interior of the shell 1, the bottom end of the shell 1 is fixedly provided with a plurality of support legs 12, the heating layer 11 can be uniformly heated, when a certain fixed temperature is reached, heating is stopped, so that polypropylene in the interior can be uniformly heated, the surface of the anti-sticking layer 13 is coated with an anti-sticking layer, the polypropylene can be prevented from being stuck on the inner wall of a polymerization kettle, the sealing cover 15 can seal the polypropylene in the polymerization kettle, the disc type heat exchange tube 4 avoids heating singly, the inner cooling tube 5 adopts a double-calandria structure, the heat removal can be accelerated.

In fig. 4: a plurality of evenly distributed feed inlet 16 has been seted up on the top of shell 1, and the top of a plurality of feed inlet 16 is equipped with corresponding top cap 17, and top cap 17 is fixed with the 16 spiro unions of feed inlet, and the feed inlet 16 through the difference gets into inner chamber 111 with the material, prevents to take place chemical reaction at feed inlet 16.

The working principle of the utility model is as follows: through the rotating shaft 3 arranged in the inner cavity 111, the first frame type stirring paddle 33 and the second frame type stirring paddle 34 can be driven by the motor 2 at the same time, the first frame type stirring paddle 33 is fixedly connected with the rotating shaft 3 through the fixing pin 36, the connecting shafts 32 are arranged at the centers of the two ends of the first frame type stirring paddle 33, the outer surface of each connecting shaft 32 is sleeved with the corresponding sleeve 31, the outer surface of each sleeve 31 is provided with the second frame type stirring paddle 34, the two frame type stirring paddles are distributed in a cross shape, materials with different weights and viscosities are fully mixed and stirred in high-viscosity liquid, so that the materials strongly flow, the heat transfer rate and the mass transfer rate are improved, the power consumption is reduced in the same stirring effect, the telescopic rods 35 at the bottom ends of the connecting shafts 32 can be stretched out and drawn back at the discharge hole 18, the spiral blades 351 rotate to enable the polymerized polypropylene not to be blocked easily during discharging, and potential safety hazards are avoided, the interior of the shell 1 is fixedly provided with a heating layer 11, one side of the heating layer 11 is fixedly provided with an anti-sticking layer 13, the bottom end of the shell 1 is provided with a discharge port 18, the bottom end of the discharge port 18 is provided with a sealing cover 15, the sealing cover 15 is hinged and fixed with the shell 1, the bottom end of the shell 1 is provided with a disc type heat exchange tube 4, the disc type heat exchange tube 4 penetrates through the shell 1 and extends to the interior of the shell 1, one side of the shell 1 is provided with an inner cooling tube 5, the inner cooling tube 5 penetrates through the shell 1 and extends to the interior of the shell 1, the bottom end of the shell 1 is fixedly provided with a plurality of support legs 12, the heating layer 11 can be uniformly heated, when a certain fixed temperature is reached, heating is stopped, polypropylene in the interior can be uniformly heated, the surface of the anti-sticking layer 13 is coated with an anti-sticking layer, the polypropylene can be prevented from being stuck on the inner wall of a polymerization kettle, the sealing cover 15 can seal the polypropylene in the polymerization kettle, the disc type heat exchange tube 4 avoids heating singly, the inner cooling tube 5 adopts a double-calandria structure, can accelerate to remove heat, a plurality of evenly distributed feed inlet 16 has been seted up on the top of shell 1, and the top of a plurality of feed inlet 16 is equipped with corresponding top cap 17, and top cap 17 is fixed with the 16 spiro unions of feed inlet, and feed inlet 16 through the difference gets into inner chamber 111 with the material, prevents to take place chemical reaction at feed inlet 16, avoids the potential safety hazard.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.

Claims

1. The utility model provides a polymeric kettle is used in polypropylene film production, includes shell (1), its characterized in that, the top of shell (1) has set firmly motor mounting bracket (14), the top of motor mounting bracket (14) has set firmly motor (2), the inside of shell (1) is equipped with inner chamber (111), inner chamber (111) inside is equipped with axis of rotation (3), axis of rotation (3) run through shell (1) extend to motor mounting bracket (14) inside with the output shaft fixed connection of motor (2), the output shaft of motor (2) with the junction of motor mounting bracket (14) is equipped with bearing seal (141), the surface of axis of rotation (3) is equipped with two fixed pins (36), fixed pin (36) with axis of rotation (3) spiro union is fixed, the surface of axis of rotation (3) is equipped with first frame stirring rake (33), first frame stirring rake (33) are passed through fixed pin (36) with axis of rotation (3) fixed connection, the surface cover of axis of rotation (3) is equipped with second frame stirring rake (34), sleeve pipe (31) have been seted up to second frame stirring rake (34) inside, axis of rotation (3) are passed through sleeve pipe (31) and connecting axle (32) fixed connection, connecting axle (32) surface has set firmly second frame stirring rake (34), the bottom of connecting axle (32) is equipped with telescopic link (35), telescopic link (35) surface has set firmly helical blade (351).

2. The polymerizer for producing polypropylene film according to claim 1, wherein a heating layer (11) is fixed inside the casing (1), and a non-stick layer (13) is fixed inside the heating layer (11).

3. The polymerizer for producing polypropylene film according to claim 1, wherein a discharge port (18) is formed at the bottom end of the casing (1), a sealing cover (15) is arranged at the bottom end of the discharge port (18), and the sealing cover (15) is hinged and fixed with the casing (1).

4. The polymerizer for producing polypropylene films according to claim 1, wherein a plurality of uniformly distributed feed inlets (16) are formed in the top end of the casing (1), corresponding top covers (17) are arranged at the top ends of the plurality of feed inlets (16), and the top covers (17) are fixed with the feed inlets (16) in a threaded manner.

5. A polymerizer for producing polypropylene films, according to claim 1, wherein the bottom end of the casing (1) is provided with a tray type heat exchange tube (4), and the tray type heat exchange tube (4) penetrates the casing (1) and extends to the inside of the casing (1).

6. The polymerizer for producing polypropylene film according to claim 1, wherein an inner cooling pipe (5) is provided at one side of the outer shell (1), and the inner cooling pipe (5) penetrates the outer shell (1) and extends to the inside of the outer shell (1).

7. The polymerizer for producing polypropylene film according to claim 1, wherein the bottom of the housing (1) is fixedly provided with a plurality of support legs (12).