Rapid foaming device for expanded microspheres

Abstract

The utility model provides a rapid foaming device for expanded microspheres, and relates to the technical field of foaming devices. The device comprises a feeding bin, a reactor and a recycling bin, a discharging controller is arranged in the feeding bin and comprises a discharging motor and a discharging connecting rod, a discharging spiral piece and an L-shaped shifting plate are arranged at the lower end of the discharging connecting rod, a conveyor is arranged in the reactor, an inner heater is installed in the conveyor, and an outer heater is installed outside the conveyor. The reactor is provided with a reactor feed port and a reactor discharge port, the reactor feed port is connected with the bin discharge port of the feeding bin, and the reactor discharge port is connected with the recovery bin. An electric heating mode is adopted, so that the expanded microspheres in the reactor are integrally heated more uniformly in the foaming and expanding process, and further the expanded and foamed microspheres are more fully expanded and foamed; materials are conveyed to the reactor discharging opening from the reactor feeding opening through the conveyor and then fall into the recycling bin, and continuous work can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of foaming device technology, and in particular to a rapid foaming device for expanding microspheres. Background Technology

[0002] Expandable microspheres are thermoplastic hollow polymer microspheres composed of a thermoplastic polymer shell and encapsulated liquid alkane gas. When the expandable microspheres are heated, the gas pressure inside the shell increases and the thermoplastic shell softens, causing the volume of the expandable microspheres to increase significantly. Upon cooling, the shell of the expandable microspheres hardens again, and the volume remains constant. After complete expansion, both the diameter and volume of the expandable microspheres change; for example, an increase in diameter from 10 µm to 40 µm results in a 4-64 fold increase in volume. The typical expansion temperature range is from 80 to 230 °C.

[0003] Currently, patent CN2023221797348 discloses an expansion device for thermally expandable microspheres. This invention utilizes a submerged pipe connected to a steam generator within the reactor body, with multiple branch pipes on the submerged pipe. Evenly spaced jet holes on the branch pipes facilitate the foaming and expansion of the microspheres within the reactor body. However, in practical use, the device still has the following shortcomings: using steam heating results in water droplets adhering to the expanded microspheres after cooling, easily attracting dust; the device lacks a feeding and unloading structure, making it inconvenient to feed and unload the expanded microspheres, and it cannot achieve continuous operation. Utility Model Content

[0004] This invention addresses the shortcomings of the prior art by providing a rapid foaming device for expandable microspheres. It employs electric heating, using an internal heater and an external heater to simultaneously or individually heat the material inside the reactor. This ensures more uniform heating of the expandable microspheres during the foaming process, resulting in more complete expansion and foaming. The material is transported from the reactor inlet to the reactor outlet via a conveyor, and then falls into a recovery chamber, enabling continuous operation.

[0005] Therefore, the technical solution of this utility model is a rapid foaming device for expanded microspheres, which includes a feeding bin, a reactor, and a recovery bin. The feeding bin is equipped with a feeding controller, which includes a feeding motor and a feeding connecting rod. The lower end of the feeding connecting rod is equipped with a feeding spiral blade and an L-shaped baffle. The reactor is equipped with a transmitter, which is equipped with an internal heater and an external heater. The upper end of the reactor is equipped with a reactor inlet on one side and a reactor outlet on the lower end of the reactor on the other side. The reactor inlet is connected to the feed bin outlet and the reactor outlet is connected to the recovery bin.

[0006] Furthermore, the reactor shell includes an outer shell and an inner shell, with an annularly wound external heating wire between the outer shell and the inner shell.

[0007] Furthermore, the transmitter includes a rotating cylinder and a transmission motor. The interior of the rotating cylinder is provided with an internal heating chamber, and a transmission spiral blade is fixedly provided on the outer surface of the rotating cylinder. A stirring rod is fixedly provided on the transmission spiral blade.

[0008] Furthermore, a heating column is provided on one side of the inner heater, and an inner heating wire is wound around the outer surface of the heating column in a ring.

[0009] Furthermore, the upper end of the feeding hopper is provided with a feeding inlet, the lower end of the feeding hopper is provided with a discharging outlet, and the lower end of the discharging outlet is provided with a discharge baffle.

[0010] Furthermore, the discharge baffle is fan-shaped.

[0011] Furthermore, a discharge sensor is installed on the discharge baffle.

[0012] Furthermore, the L-shaped baffle includes a baffle connecting plate and a baffle sealing plate. The end opening of the feeding spiral blade is connected to the baffle connecting plate and the baffle sealing plate of the L-shaped baffle to form a feeding port.

[0013] Furthermore, a reflective groove is provided in the middle of the bottom of the L-shaped dial, and a reflective sticker is attached inside the reflective groove. The reflective sticker has a white reflective area and a black reflective area.

[0014] Furthermore, a hopper support is provided on the outside of the feeding hopper, and a reactor support is provided on the outside of the reactor.

[0015] The beneficial effects of this invention are that both the internal and external heaters are electric heaters, overcoming the problem of water droplets adhering to the expanded microspheres after cooling and easily attracting dust, which is a problem with existing steam heating methods. Furthermore, the internal and external heaters can heat the material inside the reactor simultaneously or individually, allowing for convenient control of the material's heating temperature and adaptability to materials with different heating requirements. Simultaneously, this ensures more uniform heating of the expanded microspheres during the foaming and expansion process, resulting in more complete expansion and foaming.

[0016] The feeding hopper of this invention is equipped with a feeding controller. By controlling the rotation speed and position of the feeding controller, the feeding speed and amount of material can be controlled. The transmission motor of the transmitter drives the rotating cylinder to rotate. Under the driving of the transmission spiral blades and the stirring action of the stirring rod, the material tumbles and rotates in the reactor. The material is transported from the reactor inlet to the reactor outlet through the transmitter and then falls into the recovery hopper, which can achieve continuous operation. Attached Figure Description

[0017]

[01] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018]

[02] Figure 2 yes Figure 1 Another structural diagram;

[0019]

[03] Figure 3 yes Figure 1 The main view;

[0020]

[04] Figure 4 This is a structural diagram of the feeding hopper;

[0021]

[05] Figure 5 This is a schematic diagram of the material feeding controller;

[0022]

[06] Figure 6 yes Figure 5 Another structural diagram;

[0023]

[07] Figure 7 This is a schematic diagram of the assembly structure of the reactor, heater, and transmitter;

[0024]

[08] Figure 8 yes Figure 7 A sectional view;

[0025]

[09] Figure 9 This is a schematic diagram of the internal heater.

[0026]

[10] Figure 10 This is a schematic diagram of the transmitter.

[0027]

[11] Explanation of symbols in the figure:

[0028] 1. Feeding bin; 11. Bin inlet; 12. Bin outlet; 121. Discharge baffle; 122. Discharge sensor; 13. Feeding controller; 131. Feeding motor; 132. Feeding connecting rod; 133. Feeding spiral blade; 134. L-shaped baffle; 1341. Baffle connecting plate; 1342. Baffle sealing plate; 1343. Reflective groove; 14. Bin support; 2. Reactor; 21. Reactor inlet; 22. Reactor outlet; 23. Outer shell; 24. Inner shell; 25. Reactor support; 3. External heater; 31. External heating wire; 4. Internal heater; 41. Heating column; 42. Internal heating wire; 5. Transmitter; 51. Rotating cylinder; 511. Internal heating chamber; 52. Transmitter motor; 53. Transmitter spiral blade; 54. Stirring rod; 6. Recovery bin. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1-10 As shown, this utility model provides a rapid foaming device for expanded microspheres, which includes a feeding bin 1, a reactor 2, and a recovery bin 6. The feeding bin 1 is used to continuously feed materials into the reactor 2 and can accurately control the feeding amount. The upper end of the feeding bin 1 is provided with a bin inlet 11, which is used to replenish materials into the feeding bin 1 to ensure the continuous operation of the rapid foaming device for expanded microspheres. The lower end of the feeding bin 1 is provided with a bin outlet 12, which is used for precise control of the feeding amount. The lower end of the bin outlet 12 is provided with a discharge baffle 121, which is fan-shaped, such as a quarter circle or a semi-circle. The discharge baffle 121 is provided with a discharge sensor 122, which is installed in the middle of the bin outlet 12.

[0031] The feeding hopper 1 is equipped with a feeding controller 13, which works in conjunction with the hopper outlet 12 to control the feeding amount. A feeding motor 131 is located at the upper end of the feeding controller 13. The output end of the feeding motor 131 is connected to a feeding connecting rod 132. The upper end of the feeding connecting rod 132 is rotatably connected to the upper cover of the feeding hopper 1 via bearings. The lower end of the feeding connecting rod 132 is equipped with a feeding spiral blade 133 and an L-shaped deflector 134. The L-shaped deflector 134 includes a deflector connecting plate 1341 and a deflector sealing plate 1342. The end opening of the feeding spiral blade 133 is connected to the connecting plate 1341 and the blocking plate 1342 of the L-shaped baffle 134 to form a feeding port. When the feeding port rotates to the discharge baffle 121, the material in the feeding spiral blade 133 will be blocked by the L-shaped baffle 134 and the discharge baffle 121. When the feeding port rotates to other positions, the material in the feeding spiral blade 133 will fall normally. By controlling the rotation speed and rotation position of the feeding controller 13, the feeding speed and feeding amount of the material can be controlled. For example, when the discharge port of the material feeder 13 stops at the discharge baffle 121, the material feeding will stop; when the discharge port of the material feeder 13 stays at the discharge baffle 121 for a longer time than it stays at other positions, the material feeding speed will slow down and the feeding amount will decrease; when the discharge port of the material feeder 13 stays at the discharge baffle 121 for a shorter time than it stays at other positions, the material feeding speed will increase and the feeding amount will increase.

[0032] To determine the rotation position of the feeding controller 13, a reflective groove 1343 is provided at the center of the bottom of the L-shaped baffle 134. A reflective sticker is affixed inside the groove 1343, featuring both white and black reflective areas. The rotation position of the feeding controller 13 is determined by the interaction between the discharge sensor 122 and the reflective sticker. The working principle is as follows: the discharge sensor 122 is a reflective sensor. When the feeding port of the feeding controller 13 is at the discharge baffle 121, the discharge sensor 122 detects the white reflective area on the reflective sticker. When the feeding port of the feeding controller 13 is at other positions, the discharge sensor 122 detects the black reflective area on the reflective sticker.

[0033] The upper end of the reactor 2 is provided with a reactor inlet 21 on one side and a reactor outlet 22 on the lower end of the reactor 2. The reactor inlet 21 is connected to the hopper outlet 12 of the feeding hopper 1. A recovery hopper 6 is provided below the reactor outlet 22. The shell of the reactor 2 includes an outer shell 23 and an inner shell 24. An external heater 3 is fixedly provided on the shell of the reactor 2. An annularly wound external heating wire 31 is provided between the outer shell 23 and the inner shell 24.

[0034] The reactor 2 is equipped with a conveyor 5, which includes a rotating cylinder 51 and a conveyor motor 52. The rotating cylinder 51 is equipped with an internal heating chamber 511. The outer surface of the rotating cylinder 51 is fixed with a conveyor spiral blade 53, and a stirring rod 54 is fixed on the conveyor spiral blade 53. The conveyor motor 52 drives the rotating cylinder 51 to rotate. Driven by the conveyor spiral blade 53, the material is transported from the reactor inlet 21 to the reactor outlet 22 through the conveyor 5, and then falls into the recovery bin 6.

[0035] An internal heater 4 is installed in the internal heating chamber 511 of the rotating cylinder 51. A heating column 41 is provided on one side of the internal heater 4, and an internal heating wire 42 is wound around the outer surface of the heating column 41 in an annular shape.

[0036] The material channel inside reactor 2 is equipped with an internal heating wire 42 on its inner side and an external heating wire 31 on its outer side. The material inside reactor 2 can be heated simultaneously or individually by the internal heater 4 and the external heater 3, allowing for convenient control of the material's heating temperature and adaptability to materials with different heating requirements. Firstly, both heater 4 and the external heater 3 are electric heaters with adjustable heating temperature ranges. Secondly, simultaneous heating of the material from both inside and outside, coupled with stirring by the stirring rod 54, ensures more uniform heating of the expanded microspheres within reactor 2 during the foaming and expansion process, resulting in more complete expansion and foaming.

[0037] The feed hopper 1 is provided with a feed hopper support 14 on the outside, which is used to fix and support the feed hopper 1. The reactor 2 is provided with a reactor support 25 on the outside, which is used to fix and support the reactor 2. The feed hopper support 14 and the reactor support 25 are provided with casters at the bottom to facilitate the movement and transportation of the feed hopper 1 and the reactor 2.

[0038] The internal heater 4 and the external heater 3 used in this invention are both electric heaters, which overcomes the problem of water droplets adhering to the expanded microspheres after cooling, which easily attracts dust, in the existing steam heating. Moreover, the internal heater 4 and the external heater 3 can heat the material inside the reactor 2 simultaneously or individually, which can conveniently control the heating temperature of the material and adapt to materials with different heating requirements.

[0039] The feeding bin 1 of this invention is equipped with a feeding controller 13. By controlling the rotation speed and position of the feeding controller 13, the feeding speed and amount of material can be controlled. The transmission motor 52 of the transmitter 5 drives the rotating cylinder 51 to rotate. Under the driving force of the transmission spiral blade 53 and the stirring action of the stirring rod 54, the material tumbles and rotates in the reactor 2. The material is transported from the reactor inlet 21 to the reactor outlet 22 through the transmitter 5, and then falls into the recovery bin 6, enabling continuous operation.

[0040] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A rapid foaming device for expanded microspheres, characterized by, It includes a feeding bin, a reactor and a recovery bin, the inside of the feeding bin is provided with a discharging controller, the discharging controller includes a discharging motor and a discharging connecting rod, the lower end of the discharging connecting rod is provided with a discharging spiral piece and an L-shaped shifting plate, the inside of the reactor is provided with a conveyor, the inside of the conveyor is provided with an inner heater, the outside of the conveyor is provided with an outer heater, one side of the upper end of the reactor is provided with a reactor feeding port, the other side of the lower end of the reactor is provided with a reactor discharging port, the reactor feeding port is connected with the bin discharging port of the feeding bin, and the reactor discharging port is connected with the recovery bin.

2. A rapid foaming device for expanded microspheres according to claim 1, wherein The shell of the reactor includes an outer shell and an inner shell, and an annularly wound outer heating wire is arranged between the outer shell and the inner shell.

3. A rapid foaming device for expanded microspheres according to claim 1, wherein The conveyor includes a rotating cylinder and a transmission motor, the inside of the rotating cylinder is provided with an inner heating chamber, the outer surface of the rotating cylinder is fixedly provided with a transmission spiral piece, and the transmission spiral piece is fixedly provided with a stirring rod.

4. A rapid foaming device for expanded microspheres according to claim 1, wherein One side of the inner heater is provided with a heating column, and the outer surface of the heating column is annularly wound with an inner heating wire.

5. A rapid foaming device for expanded microspheres according to claim 1, wherein The upper end of the feeding bin is provided with a bin feeding port, the lower end of the feeding bin is provided with a bin discharging port, and the lower end of the bin discharging port is provided with a discharging baffle.

6. A rapid foaming device for expanded microspheres according to claim 5, wherein The shape of the discharging baffle is fan-shaped.

7. A rapid foaming device for expanding microspheres according to claim 5, wherein The discharging baffle is provided with a discharging sensor.

8. A rapid foaming device for expanded microspheres according to claim 1, wherein The L-shaped shifting plate includes a shifting plate communication plate and a shifting plate sealing plate, and the terminal opening of the discharging spiral piece is connected with the shifting plate communication plate and the shifting plate sealing plate of the L-shaped shifting plate to form a discharging port.

9. A rapid foaming device for expanding microspheres according to claim 8, wherein The middle position of the bottom of the L-shaped shifting plate is provided with a reflective sticker groove, the inside of the reflective sticker groove is attached with a reflective sticker, and the reflective sticker is provided with a white reflective area and a black reflective area.

10. A rapid foaming device for expanded microspheres according to claim 1, wherein The outside of the feeding bin is provided with a bin support, and the outside of the reactor is provided with a reactor support.

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