CN110252225A - A mixer for the production of low-density polyurethane composite materials - Google Patents

Abstract

The invention discloses a mixer for the production of low-density polyurethane composite materials, which comprises a mixing box, a cover body and a pillar, the cover body is located at the upper end of the mixing box, the pillar is located at the bottom end of the mixing box, and a second mixing box is arranged inside the mixing box. A mixing bin and a second mixing bin, the first mixing bin is set in the shape of a circular platform, a first stirring shaft is arranged inside the first mixing bin, and one end of the first stirring shaft extends outside the mixing box And it is connected with the No. 1 motor provided on the cover, and the first stirring blade is arranged on the upper ring of the first stirring shaft. The present invention can utilize the first mixing bin by setting the first mixing bin and the second mixing bin. The bin performs primary mixing of the materials entering the mixing box, and then performs secondary mixing through the second mixing bin. The mixing effect is good. At the same time, the material deposited at the bottom of the mixing box can be blown up by the air nozzle, and then passed through the second mixing bin. The two stirring shafts are used for stirring and mixing to prevent the material deposition at the bottom from causing poor mixing effect.

Description

A mixer for the production of low-density polyurethane composite materials

technical field

The invention relates to the technical field related to the production of polyurethane composite materials, in particular to a mixer for the production of low-density polyurethane composite materials.

Background technique

Polyurethane composite material is also called polyurethane resin. It is a polymer material with high strength, tear resistance and wear resistance. It is widely used in daily life, industrial and agricultural production, medicine and other fields. During the production process of polyurethane composite material, It is necessary to use a mixer to mix the raw materials to ensure the quality of the product.

But there is following shortcoming in the existing mixing machine for the production of polyurethane composite material:

1. Most of them use a single mixing bin for single mixing, and the mixing is uneven, resulting in poor mixing effect and affecting use.

2. During the mixing process, the material is easy to accumulate at the bottom, resulting in uneven mixing, which needs to be improved.

Contents of the invention

The object of the present invention is to provide a kind of mixer for the production of low-density polyurethane composite materials, to solve the problem of using a single mixing bin for mixing in the above-mentioned background technology, uneven mixing, poor mixing effect, and the problem of the mixing process. In the process, the material is easy to accumulate at the bottom, causing the problem of unsatisfactory mixing.

In order to achieve the above object, the present invention provides the following technical solutions: a mixer for the production of low-density polyurethane composite materials, comprising a mixing box, a cover and a pillar, the cover is located at the upper end of the mixing box, and the pillar is located at the bottom of the mixing box, The inside of the mixing box is provided with a first mixing bin and a second mixing bin, the first mixing bin is set in the shape of a circular platform, the inside of the first mixing bin is provided with a first stirring shaft, and the first One end of the stirring shaft extends outside the mixing box and is connected to the No. 1 motor provided on the cover. A first stirring blade is arranged on the ring of the first stirring shaft, and a scraper is connected to one side of the first stirring blade. The scraper is in contact with the inner wall of the first mixing bin, the second mixing bin is provided with a second stirring shaft, the second stirring shaft is provided with a second stirring blade, and the first mixing bin and A conical screen is provided between the second mixing bins, a rubber extension block is provided at the bottom of the conical screen, and the second mixing blade is in contact with the rubber extension block.

Preferably, an induced draft fan is installed on one side wall of the mixing box, and one side of the induced draft fan is connected to an air delivery pipe, an air booster pump is installed on the air delivery pipe, and one side of the air delivery pipe is fixedly connected to the pillar, and The upper end of the gas delivery pipe is connected with an air spray head, and the air spray heads are arranged in multiple groups, and one end of the air spray head is connected with the inner bottom of the mixing box.

Preferably, the bottom end of the conical screen is provided with an annular mounting frame, and the conical screen is fixedly connected to the inner wall of the mixing box through the annular mounting frame.

Preferably, one end of the second stirring shaft is connected to the bearing provided on the inner wall of the second mixing bin, and the other end of the second stirring shaft extends outside the second mixing bin and is connected to the No. 2 bearing provided on the outer wall of the mixing box. motor connection.

Preferably, the length of the first stirring blade decreases gradually from top to bottom.

Preferably, the upper end of the cover is provided with a feed port, and multiple groups of feed ports are provided, and the bottom side wall of the mixing box is provided with a discharge port.

The invention provides a mixer for the production of low-density polyurethane composite materials, which has the following beneficial effects:

(1) In the present invention, by setting the first mixing bin and the second mixing bin, the first mixing bin can be used to initially mix the materials entering the mixing box, and then fall into the second mixing bin through the conical screen. Secondary mixing is carried out in the warehouse, the mixing effect is good, and it is easy to use.

(2) The present invention is equipped with a gas delivery pipe and an air spray head at the bottom of the mixing box, so that the pressurized gas can enter the mixing box through the air spray head, blow up the material deposited at the bottom of the mixing box, and then pass through the second The stirring shaft is used for stirring and mixing, preventing the material from depositing at the bottom and causing poor mixing effect.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is a schematic view of the tapered screen structure of the present invention;

Fig. 3 is a schematic structural diagram of a cross-sectional view of the first mixing bin of the present invention.

In the figure: 1. Mixing box; 2. Cover body; 3. Feed inlet; 4. No. 1 motor; 5. The first mixing bin; 6. The first stirring shaft; 7. Scraper blade; 8. The first stirring Blade; 9. Conical screen; 10. No. 2 motor; 11. Second stirring shaft; 12. Rubber extension block; 13. Bearing; 14. Induced fan; 15. Air booster pump; 16. Air pipe; 17 1. Air jet head; 18. Ring mounting frame; 19. Second mixing blade; 20. Pillar; 21. Discharge port; 22. Second mixing bin.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

As shown in Figures 1-3, the present invention provides a technical solution: a mixer for the production of low-density polyurethane composite materials, including a mixing box 1, a cover body 2 and a pillar 20, and the cover body 2 is located at the upper end of the mixing box 1 , the pillar 20 is located at the bottom of the mixing box 1, the inside of the mixing box 1 is provided with a first mixing bin 5 and a second mixing bin 22, the first mixing bin 5 is set in a circular platform, the second A mixing bin 5 is provided with a first stirring shaft 6, one end of the first stirring shaft 6 extends outside the mixing box 1 and is connected to the No. 1 motor 4 provided on the cover body 2, and the first stirring shaft 6 The upper ring is provided with a first stirring blade 8, one side of the first stirring blade 8 is connected with a scraper 7, and the scraper 7 is in contact with the inner wall of the first mixing bin 5, and the inside of the second mixing bin 22 is provided with There is a second stirring shaft 11, the second stirring shaft 11 is provided with a second stirring blade 19, and a conical screen 9 is arranged between the first mixing bin 5 and the second mixing bin 22, so A rubber extension block 12 is provided at the bottom end of the conical screen 9 , and the second stirring blade 19 is in contact with the rubber extension block 12 .

An induced draft fan 14 is installed on the side wall of the mixing box 1, and an air delivery pipe 16 is connected to one side of the induced introduction fan 14, and an air booster pump 15 is installed on the air delivery pipe 16, and one side of the air delivery pipe 16 is connected to the pillar 20 is fixedly connected, and the upper end of the gas delivery pipe 16 is connected with an air spray head 17, and the air spray head 17 is arranged in multiple groups, and one end of the air spray head 17 is connected with the inner bottom of the mixing box 1, and can be deposited in the mixing box by the air spray head 17. 1. The material at the bottom of the interior is blown up to prevent uneven mixing of material deposition; the bottom of the conical screen 9 is provided with an annular mounting frame 18, and the conical screen 9 is connected to the inner wall of the mixing box 1 through the annular mounting frame 18. Fixed connection can ensure that the conical screen 9 is installed stably; one end of the second stirring shaft 11 is connected to the bearing 13 provided on the inner wall of the second mixing bin 22, and the other end of the second stirring shaft 11 extends to the second mixing shaft 11. The outside of the silo 22 is connected to the No. 2 motor 10 provided on the outer wall of the mixing box 1, and the No. 2 motor 10 can drive the second stirring shaft 11 to rotate; the length of the first stirring blade 8 is in a decreasing state from top to bottom , which can facilitate the bonding of the first stirring blade 8 and the scraper 7 to the inner wall of the first mixing bin 5; the upper end of the cover body 2 is provided with a feeding port 3, and the feeding port 3 is provided with multiple groups, and the mixing box 1. There is a discharge port 21 on the side wall of the bottom end. By setting multiple groups of feed ports 3, various materials can be added for mixing at the same time. The feeding speed is fast and the mixing effect is good.

It should be noted that, a mixer for the production of low-density polyurethane composite materials, when working, the materials to be mixed are added to the first mixing bin 5 through the feed port 3, and multiple sets of feed ports 3 can be set. At the same time, a variety of materials are added for mixing, and the feeding speed is fast. When the materials are added into the first mixing bin 5, the No. 1 motor 4 drives the first stirring shaft 6 to rotate. When the first stirring shaft 6 rotates, the first stirring blade is used 8. Preliminarily mix the added materials. At the same time, the scraper 7 can prevent the materials from sticking to the inner wall of the first mixing bin 5. After the preliminary mixing, the materials fall on the conical screen 9, and the conical screen 9 evenly disperses the materials to the Around the conical screen 9, the second motor 10 drives the second stirring shaft 11 and the second stirring blade 19 to rotate, and the second stirring blade 19 contacts and beats the rubber extension block 12 while rotating, so that the conical screen 9 vibrates, Thereby make material fall in the second mixing bin 22, utilize second stirring blade 19 to mix again the material in the second mixing bin 22 simultaneously, can utilize induced draft fan 14 to work simultaneously, utilize air booster pump 15 to The air flow is pressurized, and the air flow after the pressurization is sent to the air nozzle 17 through the air delivery pipe 16, and is sprayed to the bottom of the second mixing bin 22 by the air nozzle 17, and the material deposited at the bottom is blown up to prevent the bottom from The phenomenon of poor mixing effect caused by material deposition, the overall mixing effect is good and easy to use.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. A mixer for the production of low-density polyurethane composite materials, comprising a mixing box (1), a cover (2) and a pillar (20), the cover (2) is located at the upper end of the mixing box (1), and the pillar (20) Located at the bottom of the mixing box (1), characterized in that: the mixing box (1) is provided with a first mixing bin (5) and a second mixing bin (22), the first mixing bin The bin (5) is set in the shape of a round platform, and the first mixing bin (5) is provided with a first stirring shaft (6), and one end of the first stirring shaft (6) extends outside the mixing box (1) and is connected to The No. 1 motor (4) provided on the cover (2) is connected, and the upper ring of the first stirring shaft (6) is provided with a first stirring blade (8), and one side of the first stirring blade (8) is connected to There is a scraper (7), the scraper (7) is in contact with the inner wall of the first mixing bin (5), the second mixing bin (22) is provided with a second stirring shaft (11), the first The upper ring of the second stirring shaft (11) is provided with a second stirring blade (19), and a conical screen (9) is provided between the first mixing bin (5) and the second mixing bin (22), so that A rubber extension block (12) is provided at the bottom end of the conical screen (9), and the second stirring blade (19) is in contact with the rubber extension block (12). 2. A mixer for the production of low-density polyurethane composite materials according to claim 1, characterized in that: an induced draft fan (14) is installed on the side wall of the mixing box (1), and the induced draft fan (14) ) is connected to an air pipe (16) on one side, an air booster pump (15) is installed on the air pipe (16), and one side of the air pipe (16) is fixedly connected to the pillar (20), and the air pipe (16 ) is connected to an air spray head (17), and the air spray heads (17) are arranged in multiple groups, and one end of the air spray head (17) is connected to the inner bottom of the mixing box (1). 3. A mixer for producing low-density polyurethane composite materials according to claim 1, characterized in that: the bottom end of the conical screen (9) is provided with an annular mounting frame (18), and the conical screen The net (9) is fixedly connected with the inner wall of the mixing box (1) through the ring mount (18). 4. A mixer for producing low-density polyurethane composite materials according to claim 1, characterized in that: one end of the second stirring shaft (11) and the bearing provided on the inner wall of the second mixing bin (22) (13) is connected, and the other end of the second stirring shaft (11) extends outside the second mixing bin (22) and is connected to the No. 2 motor (10) provided on the outer wall of the mixing box (1). 5. The mixer for production of low-density polyurethane composite material according to claim 1, characterized in that: the length of the first stirring blade (8) decreases from top to bottom. 6. A mixer for producing low-density polyurethane composite materials according to claim 1, characterized in that: the upper end of the cover (2) is provided with a feed port (3), and the feed port (3) is set There are multiple groups, and a discharge port (21) is opened on the side wall of the bottom end of the mixing box (1).