Rapid dehydration device for polyurea production

Abstract

The utility model relates to the technical field of polyurea production equipment, in particular to a rapid dehydration device for polyurea production, which comprises a barrel, a sealing cover, a heating plate, a driving motor, a feed port, a discharge port, a vacuum pump, a controller and a circulating system, a steam heating cavity is arranged on the inner wall of the barrel, and the driving motor is connected with a stirring shaft. A plurality of first stirring blades are arranged on the stirring shaft, a stirring assembly is arranged at the lower end of the stirring shaft, the circulating system comprises a circulating pipe and a circulating pump, the stirring assembly comprises second stirring blades, and a plurality of L-shaped stirring parts are arranged at the bottoms of the second stirring blades. Bubbles in the polyurea are reduced as much as possible; the stirring assembly is arranged, so that polyurea at the bottom of the barrel is stirred more uniformly; polyurea is heated through the heating plate and the steam heating cavity, and the vacuum pump is arranged to extract steam in the barrel, so that the effect of rapid dehydration is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurea production equipment, in particular to a rapid dehydration device for polyurea production. Background Art

[0002] Polyurea is an elastomeric substance generated by the reaction of isocyanate components and amino compound components. The most basic properties of polyurea are corrosion resistance, waterproofness, and wear resistance. Due to its powerful functions, it is suitable for toilets, reservoirs, swimming pools, basketball courts, coastal defense projects, bridges, chemical plants and other places.

[0003] In the process of polyurea production, the isocyanate component needs to be quickly dehydrated. However, during the heating and dehydration process of the isocyanate component, the heating cannot be uniform, resulting in poor dehydration effect. At the same time, due to the different densities of the isocyanate component and the amino compound component, when the stirring time is short, the stirring is not uniform enough and bubbles may exist, resulting in poor quality of the final polyurea. How to solve these problems is what we need to consider. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides a rapid dehydration device for polyurea production, which is used to solve the problems of how to dehydrate quickly and how to stir evenly.

[0005] In order to solve the above problems, the technical solution of the utility model is as follows: a polyurea production rapid dehydration device, including a cylinder, a sealing cover is provided on the top of the cylinder, a funnel-shaped heating plate is provided on the inner wall of the cylinder, a driving motor, a feeding port, and a vacuum pump are provided on the sealing cover, a steam heating chamber is provided on the inner wall of the cylinder, an air inlet is connected to the bottom of the steam heating chamber, an air outlet is connected to the upper end of the steam heating chamber, a discharge port is provided at the bottom of the cylinder, and also includes a circulation system connected to the cylinder for circulating polyurea, the driving motor is connected to a stirring shaft, a plurality of first stirring blades are provided on the stirring shaft, a stirring assembly is provided at the lower end of the stirring shaft, the circulation system includes a circulation pipe, a circulation pump is provided on the circulation pipe, and also includes a controller for controlling the driving motor, the circulation pump, and the vacuum pump.

[0006] Furthermore, the first stirring blade extends obliquely upward from the stirring shaft toward the inner wall of the cylinder.

[0007] Furthermore, the heating plates are divided into three groups, and four of the first stirring blades form one group, and each group of the first stirring blades is arranged above the heating plates.

[0008] Furthermore, the stirring assembly includes a plurality of second stirring blades arranged in a horizontal direction at the bottom of the stirring shaft, and a plurality of L-shaped stirring parts are arranged at the bottom of the second stirring blades.

[0009] Furthermore, the stirring portion extends in the same direction as the second stirring blade.

[0010] Furthermore, the bottom of the stirring shaft is rotatably connected to the cylinder through a bearing.

[0011] Furthermore, a plurality of electric heating wires are arranged in the heating plate.

[0012] Furthermore, a temperature sensor is provided in the cylinder.

[0013] Furthermore, support legs are provided at the bottom of the cylinder, and anti-slip pads are provided at the bottom of the support legs.

[0014] Furthermore, a heat-insulating layer is provided outside the circulation pipe.

[0015] Compared with the prior art, the utility model has the following beneficial effects: a circulation system is provided to make the polyurea mixing more complete, and a vacuum pump is used to reduce the bubbles in the polyurea as much as possible; a stirring assembly is provided to make the polyurea at the bottom of the cylinder stirring more uniform; the polyurea is heated by a heating plate and a steam heating chamber, and a vacuum pump is provided to extract the water vapor in the cylinder to achieve the effect of rapid dehydration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a top view of the structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the stirring component of the utility model.

[0019] Description of the drawings: 1 cylinder, 2 sealing cover, 3 heating plate, 4 driving motor, 5 feed port, 6 vacuum pump, 7 steam heating chamber, 8 air inlet, 9 air outlet, 10 discharge port, 11 stirring shaft, 12 first stirring blade, 13 circulation pipe, 14 circulation pump, 15 second stirring blade, 16 stirring part, 17 bearing, 18 electric heating wire, 19 temperature sensor, 20 supporting leg. DETAILED DESCRIPTION

[0020] like Figure 1 , Figure 2As shown, a polyurea production rapid dehydration device comprises a cylinder 1, a sealing cover 2 is provided on the top of the cylinder 1, a funnel-shaped heating plate 3 is provided on the inner wall of the cylinder 1, a plurality of electric heating wires 18 are provided in the heating plate 3, a temperature sensor 19 is provided in the cylinder 1, a driving motor 4, a feed port 5, and a vacuum pump 6 are provided on the sealing cover 2, a steam heating chamber 7 is provided on the inner wall of the cylinder 1, an air inlet 8 is connected to the bottom of the steam heating chamber 7, an air outlet 9 is connected to the upper end of the steam heating chamber 7, and a There is a discharge port 10, and also includes a circulation system connected to the cylinder 1 for circulating polyurea, the driving motor 4 is connected to the stirring shaft 11, the bottom of the stirring shaft 11 is rotatably connected to the cylinder 1 through a bearing 17, a plurality of first stirring blades 12 are provided on the stirring shaft 11, and a stirring assembly is provided at the lower end of the stirring shaft 11. The circulation system includes a circulation pipe 13, a circulation pump 14 is provided on the circulation pipe 13, and an insulation layer is provided outside the circulation pipe 13, and also includes a controller for controlling the driving motor 4, the circulation pump 14, and the vacuum pump 6.

[0021] The first stirring blades 12 extend obliquely upward from the stirring shaft 11 toward the inner wall of the cylinder 1 . The heating plates 3 are divided into three groups, and four first stirring blades 12 form one group. Each group of first stirring blades 12 is arranged above the heating plates 3 .

[0022] like Figure 3 As shown, the stirring assembly includes a plurality of horizontal second stirring blades 15 arranged at the bottom of the stirring shaft 11, and a plurality of L-shaped stirring parts 16 are arranged at the bottom of the second stirring blades 15. The extending direction of the stirring parts 16 is the same as that of the second stirring blades 12. The stirring parts 16 stir the polyurea to promote uniform stirring and discharge bubbles.

[0023] A support leg 20 is provided at the bottom of the cylinder 1 , and an anti-slip pad is provided at the bottom of the support leg 20 .

[0024] When in use, raw materials are poured into the feed port 5, and high-temperature steam is introduced into the steam heating chamber 7. The controller controls the electric heating wire 18 in the electric heating plate 3 to preheat, and controls the temperature in the cylinder 1 to be 100-120°C. The controller controls the vacuum pump 6 to operate, and maintains the vacuum degree in the cylinder 1 to be above 0.075MPa, and the water vapor in the polyurea is extracted. The controller controls the driving motor 4 to operate, and the stirring shaft 11 rotates to drive the first stirring blade 12 to rotate, and the polyurea is stirred and heated on the heating plate 3 to quickly discharge water. The heating plate 3 is funnel-shaped, and the polyurea flows to the lower layer, and falls to the bottom of the cylinder 1 after three layers of stirring. Under the action of the second stirring blade 15 and the stirring part 16, the polyurea is stirred evenly, and bubbles are discharged. Then, the above-mentioned heating and stirring are continued through the circulation pipe 13, which can greatly shorten the stirring and heating time, quickly discharge water, discharge gas, stir evenly, and improve production efficiency.

[0025] The above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A rapid dehydration device for polyurea production, comprising a cylinder, a sealing cover is provided on the top of the cylinder, and is characterized in that: A funnel-shaped heating plate is arranged on the inner wall of the cylinder, a driving motor, a feed port and a vacuum pump are arranged on the sealing cover, a steam heating chamber is arranged on the inner wall of the cylinder, an air inlet is connected to the bottom of the steam heating chamber, an air outlet is connected to the upper end of the steam heating chamber, a discharge port is arranged at the bottom of the cylinder, and a circulation system for circulating polyurea connected to the cylinder is also included, the driving motor is connected to a stirring shaft, a plurality of first stirring blades are arranged on the stirring shaft, a stirring assembly is arranged at the lower end of the stirring shaft, the circulation system includes a circulation pipe, a circulation pump is arranged on the circulation pipe, and a controller for controlling the driving motor, the circulation pump and the vacuum pump is also included.

2. The dehydration device according to claim 1, characterized in that: The first stirring blade extends obliquely upward from the stirring shaft toward the inner wall of the cylinder.

3. The dehydration device according to claim 2, characterized in that: The heating plates are divided into three groups, and four of the first stirring blades form one group. Each group of the first stirring blades is arranged above the heating plates.

4. The dehydration device according to claim 3, characterized in that: The stirring assembly comprises a plurality of second stirring blades arranged in a horizontal direction at the bottom of the stirring shaft, and a plurality of L-shaped stirring parts are arranged at the bottom of the second stirring blades.

5. The dehydration device according to claim 4, characterized in that: The stirring portion extends in the same direction as the second stirring blade.

6. The dehydration device according to claim 1, characterized in that: The bottom of the stirring shaft is rotatably connected to the cylinder through a bearing.

7. The dehydration device according to claim 3, characterized in that: A plurality of electric heating wires are arranged in the heating plate.

8. The dehydration device according to claim 1, characterized in that: A temperature sensor is arranged inside the cylinder.

9. The dehydration device according to claim 1, characterized in that: Support legs are arranged at the bottom of the cylinder, and anti-skid pads are arranged at the bottom of the support legs.

10. The dehydration device according to claim 1, characterized in that: A heat-insulating layer is provided outside the circulation pipe.

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