CN214020756U

CN214020756U - PVC foaming regulator add device

Info

Publication number: CN214020756U
Application number: CN202022494079.1U
Authority: CN
Inventors: 马超
Original assignee: Shandong Yuanbang New Material Co ltd
Current assignee: Shandong Yuanbang New Material Co ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-08-24
Anticipated expiration: 2030-11-02

Abstract

The utility model discloses a PVC foaming regulator adding device, which belongs to the field of PVC production equipment and comprises a reaction kettle, wherein the lower end of the reaction kettle is provided with a discharge port, the upper part of the reaction kettle is hermetically connected with an upper cover, the central position of the upper cover is fixedly provided with a stirring motor, the stirring motor is connected with a stirring shaft, the stirring shaft is positioned in the reaction kettle, the stirring shaft is provided with a stirring blade, one side of the stirring motor is provided with a hopper for placing PVC foaming regulator on the upper cover, one end of the hopper passes through the upper cover and is connected with a circulating pipe communicated with the upper end and the lower end of the reaction kettle, a blanking mechanism is arranged between the circulating pipe and the hopper and is communicated with the reaction kettle, the circulating pipe passes through the air pump connected with the reaction kettle, one end in the reaction kettle, which is close to the discharge port, is fixedly provided with a spiral coil pipe, the spiral coil pipe is communicated with the lower end of the circulating pipe, and a plurality of uniformly distributed air outlets are arranged on the spiral coil.

Description

PVC foaming regulator add device

Technical Field

The utility model relates to a PVC production facility field, concretely relates to interpolation device of PVC foaming regulator.

Background

The PVC foaming regulator is an acrylate processing aid, is obtained by polymerizing an acrylate monomer through multi-stage emulsion, has a multi-layer structure of an ultra-high molecular weight polymer, has good compatibility with polyvinyl chloride, can promote the plasticization and melting of the polyvinyl chloride, improves the strength and the ductility of a foaming body, enables the foaming process to be stable and controllable, thereby obtaining a foaming product with uniform, fine and independent cell structure and lower density, and being widely used for PVC foaming products. Adding an ultra-high molecular weight foaming regulator into a PVC foaming product: firstly, the plasticization of PVC can be promoted; secondly, the melt strength of the PVC foaming material can be improved, and the combination of bubbles is prevented, so that a product which is foamed uniformly is obtained; thirdly, the good fluidity of the melt can be ensured, so that the product with good appearance can be obtained.

Because PVC foaming regulator is powdered solid, adopt the direct addition reaction liquid more in PVC foaming regulator addition process, PVC foaming regulator floats on reaction liquid upper portion more, easily causes PVC foaming regulator to condense, influences the mixed effect of PVC foaming regulator in reaction liquid, and the gas that produces simultaneously in carrying out the foaming reaction can drive PVC foaming regulator powder and break away from reaction solution, influences holistic foaming effect, and then influences product quality.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model provides a pair of interpolation device of PVC foaming regulator can realize PVC foaming regulator and reaction liquid intensive mixing before the foaming reaction, can realize simultaneously that the secondary of the gaseous showy PVC foaming regulator of reation kettle upper portion mixes with reaction liquid, is favorable to improving the interpolation precision of PVC foaming regulator, is favorable to improving the quality of final product.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

a PVC foaming regulator adding device comprises a reaction kettle, a discharge hole is arranged at the lower end of the reaction kettle, the upper part of the reaction kettle is hermetically connected with an upper cover, the central position of the upper cover is fixedly provided with a stirring motor, the stirring motor is connected with a stirring shaft which is positioned in the reaction kettle, stirring blades are arranged on the stirring shaft, a hopper for placing a PVC foaming regulator is arranged on the upper cover on one side of the stirring motor, one end of the hopper penetrates through the upper cover and is connected with a circulating pipe communicated with the upper end and the lower end of the reaction kettle, a feeding mechanism is arranged between the circulating pipe and the hopper for communicating, the circulating pipe penetrates through the reaction kettle and is connected with an air pump, one end of the reaction kettle, which is close to the discharge port, is fixedly provided with a spiral coil, the spiral coil is communicated with the lower end of the circulating pipe, and a plurality of uniformly distributed gas outlets are arranged on the spiral coil.

Preferably, unloading mechanism is including the intercommunication the through-hole of hopper and circulating pipe, but the through-hole interpolation is equipped with free rotation's pivot, form the clearance between through-hole and the pivot, pivot one end is rotated and is connected in the circulating pipe, the pivot other end stretches into in the hopper, the pivot is located drive fan is installed to the one end in the circulating pipe, the pivot is located the tablet is installed to the one end of hopper.

Preferably, the through hole is of a funnel structure, the maximum value of the distance between the through hole and the rotating shaft is 1-2mm, and the minimum value of the distance between the through hole and the rotating shaft is 0.1-0.5 mm.

Preferably, the rotating shaft in the gap is provided with a spiral fin matched with the through hole.

Preferably, the air outlet is located directly below the spiral coil.

Preferably, the upper cover is provided with an exhaust port for realizing gas recovery, and the exhaust port is located at one end in the reaction kettle and is fixedly provided with a filter screen.

The utility model has the advantages of that:

1. the utility model discloses in utilize the gas on circulating pipe drive reation kettle upper portion to get into reation kettle bottom through the air pump, make the gaseous circulation flow in the reation kettle, promote the drive fan piece to rotate and drive the pivot rotation in the gaseous circulation flow in-process, can promote the PVC foaming regulator whereabouts in the feeder hopper, avoid the likepowder PVC foaming regulator in the hopper to appear bridging phenomenon in the in-process that falls down, and the powder PVC foaming regulator that falls can fully mix in the gas that flows in the circulating pipe, and through the gas outlet evenly distributed on the spiral coil pipe in the reaction liquid of reation kettle bottom, and fully fuse in the reaction liquid in the process that the bubble rises, make the distribution of PVC foaming regulator in the reaction liquid more even;

2. in the utility model, the upper end of the circulating pipe is communicated with the hopper and the upper space of the reaction kettle simultaneously, so that the PVC foaming regulator dispersed in gas in the reaction kettle can be remixed in reaction liquid, and pressure difference can be formed at the upper end and the lower end of the hopper, which is favorable for promoting the powder PVC foaming regulator to fall into the circulating pipe;

3. the utility model discloses in through the clearance that the through-hole of funnel structure and pivot cooperate and form, both can restrict the falling speed of powder PVC foaming regulator, make PVC foaming regulator form the dust in the circulating pipe and flow along with the gas, avoid PVC foaming regulator to precipitate in the circulating pipe, also can break the PVC foaming regulator of caking in the pivot rotatory in-process, guarantee the granularity of the powder that falls, ensure that the powder can flow along with the gas;

4. the utility model discloses in cooperate through helical fin and through-hole, helical fin can effectively avoid the powder to cause the clearance to block up because of extrusion is glutinous even at the clearance inner wall at powder whereabouts in-process because of rotating, can keep the smoothness nature of powder whereabouts in the hopper.

Drawings

Fig. 1 is the overall structure cross-sectional view of the adding device of the PVC foaming regulator of the present invention.

In the figure: 1-reaction kettle, 2-hopper, 3-circulating pipe, 4-spiral coil, 5-through hole, 6-rotating shaft, 7-driving fan sheet, 8-material sheet, 9-air pump and 10-spiral fin.

Detailed Description

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

The PVC foaming regulator adding device shown in figure 1 comprises a reaction kettle 1, wherein a discharge port is arranged at the lower end of the reaction kettle 1, an upper cover is hermetically connected to the upper part of the reaction kettle 1, a stirring motor is fixedly installed at the central position of the upper cover, the stirring motor is connected with a stirring shaft, the stirring shaft is positioned in the reaction kettle 1, a plurality of uniformly distributed stirring blades are installed on the stirring shaft, a hopper 2 for placing PVC foaming regulator is arranged on the upper cover on one side of the stirring motor, one end of the hopper 2 penetrates through the upper cover and is connected with a circulating pipe 3 communicating the upper end and the lower end of the reaction kettle 1, a blanking mechanism is arranged between the circulating pipe 3 and the hopper 2 and is communicated with each other, the circulating pipe 3 penetrates through the reaction kettle 1 and is connected with an air pump 9, a spiral coil 4 is fixedly installed at one end, close to the discharge port, in the reaction kettle 1, and the spiral coil 4 is communicated with the lower end of the circulating pipe 3, and a plurality of uniformly distributed air outlets are arranged on the spiral coil 4.

The blanking mechanism comprises a through hole 5 which is communicated with the hopper 2 and the circulating pipe 3, a rotating shaft 6 which can rotate freely is inserted in the through hole 5, a gap is formed between the through hole 5 and the rotating shaft 6, one end of the rotating shaft 6 is rotatably connected in the circulating pipe 3, the other end of the rotating shaft 6 extends into the hopper 2, one end of the rotating shaft 6, which is positioned in the circulating pipe 3, is provided with a driving fan blade 7, and one end of the rotating shaft 6, which is positioned in the hopper 2, is provided with a material sheet 8; the through hole 5 is of a funnel structure, the maximum value of the distance between the through hole 5 and the rotating shaft 6 is 1-2mm, and the minimum value of the distance between the through hole 5 and the rotating shaft 6 is 0.1-0.5 mm; the rotating shaft 6 in the gap is provided with a spiral fin 10 matched with the through hole 5; the air outlet is positioned right below the spiral coil 4; the upper cover is provided with an exhaust port for realizing gas recovery, and the exhaust port is located at one end in the reaction kettle 1 and is fixedly provided with a filter screen.

When the utility model works, firstly, the reaction liquid to be foamed is added into the reaction kettle 1, then the powdery foaming regulator is poured into the hopper 2 (or the powdery adding material is put into the hopper 2, wherein the hopper 2 can be provided with a plurality of hoppers 2 on the upper cover, each hopper 2 is connected with a circulating pipe 3, different materials are put into different hoppers 2), then the stirring motor and the air pump 9 are started, the stirring motor drives the stirring shaft to rotate, the stirring shaft drives the stirring blades to realize the stirring of the reaction liquid in the reaction kettle 1, the air pump 9 sucks the gas at the upper part of the reaction kettle 1 to be discharged at the bottom of the reaction liquid at the lower part of the reaction kettle 1, the gas in the circulating pipe 3 is driven to rotate by the driving fan 7 in the flowing process, the rotating shaft 6 promotes the powdery foaming regulator to pass through the through hole 5 and enter the circulating pipe 3, the falling amount of the powdery foaming regulator is limited by the gap, the powdery foaming regulator enters the circulating pipe 3 and then is atomized under the action of flowing gas, the atomized foaming regulator enters the spiral coil 4 along with the gas and enters the reaction liquid through the gas outlet, the atomized foaming regulator is fully mixed with the reaction liquid along with the rising of the gas in the reaction liquid, and the reaction liquid is stirred by the stirring blades to further promote the floating foaming regulator in the gas to be mixed with the reaction liquid more uniformly, so that the mixing speed of the foaming regulator in the reaction liquid can be effectively improved, wherein the redundant gas in the reaction kettle 1 is discharged through the gas outlet, and the foaming regulator in the gas is filtered by the filter screen in the gas discharging process, after the reaction liquid and the foaming regulator are mixed, closing the air pump 9 and the hopper 2, connecting the exhaust port with a gas recovery device, closing the hopper 2, carrying out high-temperature banburying to complete the foaming reaction of PVC, closing the stirring motor after the foaming reaction is completed, and finally discharging through the discharge port; wherein can in the hopper 2 can dismantle joint auxiliary motor in the pivot 6, telescopic cylinder is connected to auxiliary motor, and telescopic cylinder passes through the mount pad hoist and mount in the hopper, realizes pivot 6 and auxiliary motor through telescopic cylinder's flexible and is connected and the separation, through auxiliary motor drives pivot 8 rotatory, avoids leading to pivot 8 static because of frictional force is too big between the foamer in pivot 8 and the hopper 2.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims

1. A PVC foaming regulator adding device is characterized by comprising a reaction kettle, wherein a discharge hole is formed at the lower end of the reaction kettle, the upper part of the reaction kettle is hermetically connected with an upper cover, the central position of the upper cover is fixedly provided with a stirring motor, the stirring motor is connected with a stirring shaft which is positioned in the reaction kettle, stirring blades are arranged on the stirring shaft, a hopper for placing a PVC foaming regulator is arranged on the upper cover on one side of the stirring motor, one end of the hopper penetrates through the upper cover and is connected with a circulating pipe communicated with the upper end and the lower end of the reaction kettle, a feeding mechanism is arranged between the circulating pipe and the hopper for communicating, the circulating pipe penetrates through the reaction kettle and is connected with an air pump, one end of the reaction kettle, which is close to the discharge port, is fixedly provided with a spiral coil, the spiral coil is communicated with the lower end of the circulating pipe, and a plurality of uniformly distributed gas outlets are arranged on the spiral coil.

2. The device for adding the PVC foaming modifier according to claim 1, wherein the blanking mechanism comprises a through hole for communicating the hopper with the circulating pipe, a rotating shaft capable of rotating freely is inserted into the through hole, a gap is formed between the through hole and the rotating shaft, one end of the rotating shaft is rotatably connected in the circulating pipe, the other end of the rotating shaft extends into the hopper, a driving fan blade is installed at one end of the rotating shaft in the circulating pipe, and a material sheet is installed at one end of the rotating shaft in the hopper.

3. The PVC foaming regulator adding device as claimed in claim 2, wherein the through hole is of a funnel structure, the maximum distance between the through hole and the rotating shaft is 1-2mm, and the minimum distance between the through hole and the rotating shaft is 0.1-0.5 mm.

4. The device for adding the PVC foaming regulator as claimed in claim 2, wherein the rotating shaft in the gap is provided with a spiral fin matched with the through hole.

5. The PVC foaming regulator adding device as claimed in claim 1, wherein the air outlet is located right below the spiral coil.

6. The adding device of the PVC foaming regulator as claimed in claim 1, wherein the upper cover is provided with an exhaust port for realizing gas recovery, and a filter screen is fixedly installed at one end of the exhaust port located in the reaction kettle.