CN204109170U - A kind of can the boiling foaming machine of continuous seepage polyolefine material expanded beads - Google Patents

Abstract

The utility model provides a boiling foaming equipment capable of continuously producing foamed particles of polyolefin materials, comprising a screw feeder connected in sequence, a cross-linking and pre-foaming fluidized bed, a foaming fluidized bed, a cooling and solidifying fluidized bed, and Bag filter, the exhaust gas outlet of the bag separator is connected to the air inlet of the blower through the first exhaust pipe, and the air outlet of the blower is connected to the air inlet box of the cooled and solidified fluidized bed through the first pipeline, and passed through the first The second pipeline is connected to the air inlet box of the foaming fluidized bed, the third pipeline is connected to the hot air outlet of the foaming fluidized bed and the second pipeline, and the fourth pipeline is connected to the hot air outlet of the cross-linking and pre-expansion For the air inlet box of the ebullating bed, there is a fifth pipeline communicated between the third pipeline and the fourth pipeline. The utility model makes it possible to continuously foam the polyolefin material particles, improves the foaming uniformity, greatly improves the production efficiency of the polyolefin material foam particles, and can save a large amount of energy.

Description

A boiling foaming equipment capable of continuously producing foamed particles of polyolefin materials

【Technical field】

The utility model relates to a boiling foaming device capable of continuously producing foamed particles of polyolefin materials.

【Background technique】

Polyolefin materials include polymer materials composed of hydrocarbons such as PE and EVA. Generally, chemical foaming is used. Polyolefin materials have insufficient melt strength at the temperature of foaming and decomposition, so they need to be cross-linked to improve their strength. When the blowing agent decomposes, it maintains a certain strength of the cell wall. Usually polyolefin foaming is carried out under pressure, first cross-linking and then foaming, under pressure, it can ensure that the gas does not leak out and form a foam with complete bubbles (commonly known as closed-cell foam), so polyolefin Olefin foaming can hardly be carried out continuously, but must be produced in the gap in the mold, and the production efficiency is low.

【Content of invention】

The technical problem to be solved by the utility model is to provide a boiling foaming equipment capable of continuously producing foamed particles of polyolefin materials, which makes it possible to continuously foam particles of polyolefin materials, improves the uniformity of foaming, and greatly improves the The production efficiency of polyolefin material foamed particles, hot air recycling, can also save a lot of energy.

The utility model realizes above-mentioned technical problem like this:

A boiling foaming equipment capable of continuously producing foamed particles of polyolefin materials, the boiling foaming equipment includes a screw feeder, a crosslinking and pre-foaming fluidized bed, a foaming fluidized bed, a cooling solidification fluidized bed, a bag type filter, air blower, warm blower, hot air blower and electric heater; a blade stirrer is all provided in the cross-linking and pre-foaming fluidized bed, foaming fluidized bed and cooling solidification fluidized bed, and the cross-linking and pre-foaming fluidized bed There is an air inlet box at the bottom of the pre-foaming fluidized bed, foaming fluidized bed and cooling and solidification fluidized bed, each air inlet box is equipped with an air distribution plate, and each air distribution plate is provided with a plurality of air inlets;

The screw feeder is connected with the first feeding port of the crosslinking and pre-foaming fluidized bed, and the first outlet of the crosslinking and pre-foaming fluidized bed is connected with the second feeding port of the foaming fluidized bed Connected, the second outlet of the foaming fluidized bed is connected with the third inlet of the cooling and solidifying fluidized bed, and the third outlet of the cooling and solidifying fluidized bed is connected to the bag separator; the first The material outlet is higher than the second material inlet, and the second material outlet is higher than the third material inlet;

The exhaust air outlet of the bag separator is connected to the air inlet of the blower through a first exhaust pipe, and the air outlet of the blower is connected to the air inlet box of the cooled and solidified fluidized bed through a first pipeline, and is passed through a second pipeline Connected to the air inlet box of the foaming fluidized bed, the first pipeline is provided with a first valve, and the second pipeline is provided with a second valve and an electric heater in sequence; one end of a third pipeline is connected with the foaming fluidized bed The hot air outlet is connected, and the other end is connected to the second pipeline, and a third valve and a hot air blower are arranged in sequence on the third pipeline; The outlet is connected, and the other end is connected to the air inlet box of the cross-linking and pre-foaming fluidized bed. The fourth pipeline is provided with a fourth valve and a warm fan in turn; there is also a communication between the third pipeline and the fourth pipeline. A fifth pipeline, the fifth pipeline is provided with a fifth valve.

Further, the fourth pipeline is connected to a second exhaust pipe, the second exhaust pipe is provided with a sixth valve, and the other end of the second exhaust pipe is connected to the air inlet of the blower, and the blower The air inlet is connected with a first air inlet, and the air inlet of the warm fan is connected with a second air inlet.

Further, the volume ratio of the cross-linking to the pre-foaming fluidized bed, the foaming fluidized bed and the cooling-solidification fluidized bed is 1:1.8-2:1.5-2.

Further, each of the air inlets is provided with a shielding portion

The utility model has the following advantages:

The blade type agitator adopted by the utility model can disperse the material particles entering each ebullating bed, avoiding the particle bonding during the foaming process; each air inlet 121 is provided with a shielding part 122, which can prevent the particles from blocking the air inlet The utility model makes it possible to continuously foam polyolefin material particles, improve the uniformity of foaming, and greatly improve the production efficiency of polyolefin material foam particles. In addition, the internal heat of the utility model basically realizes self-circulation, once the stable operation requires less supplementary heat, the recycling of resources is realized, and a large amount of energy is saved.

【Description of drawings】

The utility model will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the air distribution plate.

Explanation of the accompanying drawings:

1. Screw feeder 2. Cross-linking and pre-foaming fluidized bed

3. Foaming fluidized bed 4. Cooling and solidification fluidized bed

5. Bag filter 6. Air blower

7. Hot air blower 8. Electric heater

9. Warming fan 10. Blade agitator

11. Air intake box 12. Air distribution board

13. The first pipeline 14. The second pipeline

15. The third pipeline 16. The fourth pipeline

17. The fifth pipe 18. The first exhaust pipe

19. The second exhaust pipe 21. The first material inlet

22. The first material outlet 23. Warm air outlet

31. The second material inlet 32. The second material outlet

33. Hot air outlet 41. The third material inlet

42. The third outlet 51. Exhaust air outlet

121. Air inlet 122. Shielding part

131. The first valve 141. The second valve

151. The third valve 161. The fourth valve

171. The fifth valve 191. The sixth valve

100. The first air inlet 101. The second air inlet

【Detailed ways】

Referring to Fig. 1-2, the embodiment of the present utility model is described in detail.

Focus on Figures 1-2. The utility model relates to a boiling foaming equipment capable of continuously producing foamed polyolefin particles. The boiling foaming equipment includes a screw feeder 1, a cross-linking and pre-foaming fluidized bed 2 , foaming fluidized bed 3, cooling solidification fluidized bed 4, bag filter 5, air blower 6, hot air fan 7, electric heater 8 and warm fan 9; described crosslinking and pre-foaming fluidized bed 2, foaming fluidized A blade agitator 10 is provided in the bed 3 and the cooled and solidified fluidized bed 4, and an air inlet box 11 is provided at the bottom of the cross-linking and pre-foaming fluidized bed 2, the foaming fluidized bed 3 and the cooled and solidified fluidized bed 4 , the inside of each air inlet box 11 is provided with a horizontal air distribution plate 12, and each air distribution plate 12 is provided with a plurality of air inlets 121;

The screw feeder 1 is connected with the first feed port 21 of the cross-linking and pre-foaming fluidized bed 2, and the first discharge port 22 of the cross-linking and pre-foaming fluidized bed 2 is connected with the foaming fluidized bed 3 The second feed port 31 of the foaming fluidized bed 3 is connected to each other, and the second discharge port 32 of the foaming fluidized bed 3 is connected to the third feed port 41 of the cooling and solidifying fluidized bed 4, and the third discharging material of the cooling and solidifying fluidized bed 4 The port 42 is connected to the bag separator 5; the first discharge port 22 is higher than the second feed port 31, and the second discharge port 32 is higher than the third feed port 41;

The exhaust air outlet 51 of the bag separator 5 is connected to the air inlet of the air blower 6 through the first exhaust pipe 18, and the air outlet of the air blower 6 is connected to the air inlet box 11 of the cooled and solidified fluidized bed 4 through a first pipeline 13 , and connected to the air inlet box 11 of the foaming fluidized bed 3 through a second pipeline 14, the first pipeline 13 is provided with a first valve 131, and the second pipeline 14 is sequentially provided with a second valve 141 and electric Heater 8; One end of a third pipeline 15 is connected with the hot air outlet 33 of the foaming fluidized bed 3, and the other end is connected with the second pipeline 14, and the third pipeline 15 is successively provided with a third valve 151 and heat Fan 7; one end of a fourth pipeline 16 is connected with cross-linking and the warm air outlet 23 of pre-foaming fluidized bed 2, and the other end is connected to cross-linking and pre-foaming fluidized bed 2 air inlet box 11, the fourth The pipeline 16 is provided with a fourth valve 161 and the fan 9 in sequence; a fifth pipeline 17 is connected between the third pipeline 15 and the fourth pipeline 16, and a fifth valve 171 is provided on the fifth pipeline 17 .

The fourth pipeline 16 is connected to a second exhaust pipe 19, the second exhaust pipe 19 is provided with a sixth valve 191, and the other end of the second exhaust pipe 19 is connected to the air inlet of the blower 6, The air inlet of the blower 6 is connected with a first air inlet 100 , and the air inlet of the warm fan 9 is connected with a second air inlet 101 .

The volume ratio of the cross-linking to the pre-foaming fluidized bed 2, the foaming fluidized bed 3 and the cooling-solidification fluidized bed 4 is 1:1.8-2:1.5-2.

Focusing on FIG. 2 , each of the air inlets 121 is provided with a shielding portion 122 .

The method of use is as follows:

After mixing the raw materials of the polyolefin material foamed particles, after banburying, milling, and granulation, the screw feeder 1 is sent into the crosslinking and pre-foaming fluidized bed 2 from the first feed port 21, and then Cross-linking and pre-foaming: Under the blowing of the 130°C hot air blown by the air inlet box 11 at the bottom of the fluidized bed 2, it rolls in a boiling state, and completes the cross-linking and pre-foaming under the 130°C hot air to complete the cross-linking and pre-expansion The specific gravity of the foamed material particles becomes lighter, and under the action of wind force and wind direction, they enter the foaming fluidized bed 3 sequentially along the first discharge port 22 and the second feed port 31;

The material particles sent into the foaming fluidized bed 3 are boiled and rolled under the hot air of 160-180°C sent by the air inlet box 11, and the foaming is completed. After the foaming is completed, the specific gravity of the material particles continues to become lighter. Under the action of wind force and wind direction, enter the fluidized bed 4 for cooling and solidification along the second discharge port 32 and the third feed port 41 in sequence;

The material particles fed into the ebullating bed 4 for cooling and solidification roll in a boiling state under the cold wind of 82-100°C sent by the air inlet box 11. While cooling and solidifying, they are blown into the bag separator 5, and finally are discharged from the bag separator. 5. The collection port collects the finished product, weighs and repacks.

The air supply process of boiling foaming equipment is as follows:

The exhausted air from the exhausted air outlet 51 of the bag separator 5 is sent into the air inlet box 11 at the bottom of the cooled and solidified fluidized bed 4 by the air blower 6, and is heated by the electric heater 8 at the same time and then sent to the bottom of the foamed fluidized bed 3 In the wind box 11, a small part of the hot air in the foaming fluidized bed 3 enters the cooling and solidifying fluidized bed 4, and most of it enters the third pipeline 15 through the hot air outlet 33, and is finally pumped by the hot air blower 7 to the inlet at the bottom of the foaming fluidized bed 3. In the bellows 11, the hot air in the foaming fluidized bed 3 is self-circulating, and the lost hot air can be supplemented by the electric heater 8; the hot air in the cross-linking and pre-foaming fluidized bed 2 enters the fourth pipeline 16 from the warm air outlet 23 , and then pumped by warm blower 9 to the air inlet box 11 at the bottom of the crosslinking and pre-foaming fluidized bed 2, and a fifth pipeline 17 is also communicated between the third pipeline 15 and the fourth pipeline 16, which can make the foaming fluidized bed The high-temperature hot air in 3 is introduced into the cross-linking and pre-foaming fluidized bed 2 to supplement the heat lost, so the hot air in the cross-linking and pre-foaming fluidized bed 2 is also self-circulating, and can be transferred from the foaming fluidized bed 3 Introduce the lost hot gas and heat inside, when the pressure in the cross-linking and pre-foaming fluidized bed 2 is too high, part of the hot gas can be discharged through the second exhaust pipe; the control of the above-mentioned air volume is regulated by the valves of each pipeline , the air inlet of the blower 6 is connected to the first air inlet 100 to supplement the lost gas, and the air inlet of the warm fan 9 is connected to the second air inlet 101 to adjust the air temperature.

It can be known from the above that the internal heat of the utility model basically realizes self-circulation, and once the stable operation requires less supplementary heat, the recycling of resources is realized and a large amount of energy is saved.

The blade type agitator 10 adopted by the utility model can disperse the material particles entering each ebullating bed, avoiding particle bonding in the foaming process; each air inlet 121 is provided with a shielding part 122, which can prevent the particles from blocking the air inlet The utility model makes it possible to continuously foam polyolefin material particles, improve the uniformity of foaming, and greatly improve the production efficiency of polyolefin material foam particles.

Although the specific embodiments of the present utility model have been described above, those skilled in the art should understand that the specific embodiments we describe are only illustrative, rather than used to limit the scope of the present utility model. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the utility model shall fall within the protection scope of the claims of the utility model.

Claims (4)

1. A kind of ebullient foaming equipment that can continuously produce polyolefin material expanded particles, it is characterized in that: described ebullient foaming equipment comprises screw feeder, cross-linking and pre-foaming ebullating bed, foaming ebullating bed, cooling solidified ebullated bed, bag filter, air blower, warm air blower, hot air blower and electric heater; said cross-linking and pre-foaming ebullated bed, foaming ebullated bed and cooling and solidifying ebullated bed are equipped with a blade agitator, And the bottom of the cross-linking and pre-foaming fluidized bed, the foaming fluidized bed and the cooling solidification fluidized bed are all equipped with an air inlet box, each air inlet box is provided with an air distribution plate, and each air distribution plate is provided with a plurality of air inlets ; The screw feeder is connected with the first feeding port of the crosslinking and pre-foaming fluidized bed, and the first outlet of the crosslinking and pre-foaming fluidized bed is connected with the second feeding port of the foaming fluidized bed Connected, the second outlet of the foaming fluidized bed is connected with the third inlet of the cooling and solidifying fluidized bed, and the third outlet of the cooling and solidifying fluidized bed is connected to the bag separator; the first The material outlet is higher than the second material inlet, and the second material outlet is higher than the third material inlet; The exhaust gas outlet of the bag separator is connected to the air inlet of the blower through a first exhaust pipe, and the air outlet of the blower is connected to the air inlet box of the cooled and solidified fluidized bed through a first pipeline, and is passed through a second pipeline Connected to the air inlet box of the foaming fluidized bed, the first pipeline is provided with a first valve, and the second pipeline is provided with a second valve and an electric heater in turn; one end of a third pipeline is connected with the foaming fluidized bed The hot air outlet is connected, and the other end is connected to the second pipeline, and a third valve and a hot air blower are arranged in sequence on the third pipeline; The outlet is connected, and the other end is connected to the air inlet box of the cross-linked and pre-foamed fluidized bed. The fourth pipeline is provided with a fourth valve and a warm fan in sequence; there is also a communication between the third pipeline and the fourth pipeline. A fifth pipeline, the fifth pipeline is provided with a fifth valve. 2. A kind of boiling foaming equipment capable of continuously producing foamed particles of polyolefin material as claimed in claim 1, characterized in that: the fourth pipeline is connected with a second exhaust pipe, and the second exhaust pipe A sixth valve is arranged on the top, the other end of the second exhaust pipe is connected to the air inlet of the blower, the air inlet of the blower is connected to a first suction port, and the air inlet of the warm fan is connected to a second Inhalation port. 3. A kind of boiling foaming equipment capable of continuously producing foamed particles of polyolefin materials as claimed in claim 1 or 2, characterized in that: said cross-linking and pre-foaming ebullating bed, foaming ebullating bed and cooling and solidification The volume ratio of the fluidized bed is 1:1.8～2:1.5～2. 4. The boiling foaming equipment capable of continuously producing foamed particles of polyolefin material as claimed in claim 3, characterized in that: each of the air inlets is provided with a shielding part.