Continuous polyurethane solution polymerization without fluctuation high efficiency pre-polymer special conical reaction device

Abstract

The application discloses a continuous polyurethane raw solution non-fluctuation high-efficiency pre-polymerization special conical reaction device, belongs to the technical field of polymer material polymerization reaction equipment, and comprises an inner shell body, an outer shell body is connected to the outer side of the inner shell body, the outer shell body is arranged in communication with the inner shell body, a stirring assembly is rotatably arranged in the inner shell body, the stirring assembly comprises stirring blades for mixing chemical reactants and spiral stirring blades, a liftable piston assembly is arranged in the inner shell body, a discharge pipe is arranged in communication with the outer side of the inner shell body, an auxiliary feeding assembly is connected to the outer shell body, and a temperature control shell is fixedly arranged on the outer side of the outer shell body. The chemical raw materials are added to the inner shell body through the auxiliary feeding assembly, the mixing of the reactants is promoted, the pre-polymerization is promoted, the viscosity is improved, the subsequent reaction fluctuation of the process of the continuous polyurethane raw solution is reduced, and the device has high efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of polymer material polymerization, and particularly relates to a continuous polymerization spandex stock solution non-fluctuation high-efficiency pre-polymer special conical reaction device. BACKGROUND

[0002] Generally, the process of continuously polymerizing spandex stock solution is as follows: two main chemical raw materials, diisocyanate (MDI) and polytetramethylene ether glycol (PTG), are mixed in a certain proportion and then pre-polymerized in a pre-polymerization reactor, and then the pre-polymer is transported to a chain extension reactor, and at the same time, solvent dimethylacetamide (DMAC) and chain extender are added for chain extension reaction, and finally, after adding ground auxiliary materials and fully mixing, the polymerization stock solution is prepared, and different specifications of spandex spinning solution can be synthesized.

[0003] The existing pre-polymer supply or buffer device is only a storage tank with a jacket, without any homogenizing mixing system, so that the pre-polymer storage tank only has the function of storing and supplying the raw materials for the second step reaction, without any homogenizing, defoaming and pressure stabilizing functions, which makes the viscosity of the pre-polymer produced by the first reaction poor, directly causing the second reaction to fluctuate sharply, and the performance of the product also fluctuates greatly.

[0004] US patent No. US06647162 discloses a stirrer for stirring near the wall of a container, which comprises a stirrer arm arranged radially on a driving shaft located at the center, a plate body connected on both sides of the driving shaft, and a stirring element obliquely arranged on the plate body. The invention is suitable for low viscosity fluids and high viscosity fluids, and ensures sufficient mixing of the reactor contents and good heat propagation with relatively small energy input. The invention has room for improvement in the following technical problems: when stirring low viscosity chemical raw materials, the high-speed rotating plate body is easy to produce bubbles in the raw materials, increase the air pressure in the wall, and is not conducive to the addition of subsequent reactants; at the same time, after the compound is stirred and sinks, the compound deposited at the bottom is not easy to return to the middle position for mixing and stirring, which is not conducive to the full mixing of the compound. SUMMARY

[0005] The present application aims to provide a continuous polymerization spandex stock solution non-fluctuation high-efficiency pre-polymer special conical reaction device which can fully and stably mix chemical raw materials and realize raw material defoaming to improve the viscosity of the compound.

[0006] The technical scheme adopted by the present application to achieve the above-mentioned purpose is as follows:

[0007] The application discloses a continuous polyurethane solution pre-polymerization special conical reaction device, which comprises an inner shell, an outer shell arranged outside the inner shell, a valve body arranged in communication between the inner shell and the outer shell, a stirring assembly arranged in the inner shell for mixing chemical raw materials, and a discharge pipe arranged in communication with the outer shell.

[0008] Preferably, the stirring assembly comprises a rotating shaft arranged at the center of the inner shell, a bent plate symmetrically connected to the side of the rotating shaft, stirring blades arranged at intervals on the bent plate, and a spiral stirring blade wound on the rotating shaft. After the reaction raw materials are added into the outer shell, the raw materials flow into the inner shell, and the stirring blades on the bent plate rotate to stir the raw materials in the inner shell when the rotating shaft rotates. At this time, the raw materials form a cyclone around the inner wall of the inner shell and are mixed, which is beneficial to reducing the residue of the raw materials on the inner wall of the inner shell. Meanwhile, the spiral stirring blade wound on the center of the rotating shaft is driven by the rotating shaft to make the raw materials form an upward cyclone near the rotating shaft and are mixed. The cyclone near the inner wall of the inner shell sinks under the influence of gravity and the conical inner wall of the inner shell, and the cyclone after sinking is driven by the upward cyclone at the center to rise again, thereby forming liquid exchange between the outer layer of the raw materials and the inner layer of the raw materials, effectively improving the homogenization of the raw materials and increasing the viscosity of the pre-polymer, which is beneficial to the subsequent chain growth reaction efficiency. The spiral stirring blade and the stirring blades arranged on the side of the rotating shaft can ensure sufficient stirring while reducing the rotational resistance of the raw materials, thereby improving the stirring efficiency.

[0009] Preferably, the top of the inner shell is sealed and provided with a driving motor, and the rotating shaft penetrates through the top of the inner shell and is connected to the driving motor. The driving motor can drive the rotating shaft to rotate at a high speed, the rotation of the rotating shaft is controlled by controlling the start and stop of the driving motor, and the driving motor is stopped when the raw materials are discharged after being stirred, so that the pressure difference caused by rotation does not cause the raw materials to be difficult to discharge from the discharge pipe below. Meanwhile, the rotating speed of the rotating shaft can be adjusted by the driving motor, so that the excessive bubbles generated when the raw materials are mixed due to too high rotating speed are avoided, the subsequent chain growth reaction is affected, the rotating speed can be adjusted to be fast when clean water is injected for cleaning, and the cleaning effect is improved.

[0010] Preferably, the rotating shaft is provided with limiting rings at intervals at the bottom, and a sliding mesh plate is connected to the rotating shaft between the limiting rings and can slide axially relative to the rotating shaft. The sliding mesh plate at the bottom can effectively separate the materials, the bubbles generated during the stirring process are broken after contacting the mesh plate, the mixture of the reaction materials is homogenized, which is beneficial to the formation of the subsequent spandex spinning solution, and the spiral stirring blade wound on the rotating shaft drives the raw materials at the bottom to float and act on the sliding mesh plate, thereby making the sliding mesh plate slide axially on the rotating shaft, further improving the mixing effect of the raw materials at different heights, and filtering and scattering the agglomerates in the mixed raw materials, which is beneficial to improving the viscosity of the pre-polymer, reducing the reaction fluctuation of the pre-polymer, and improving the performance of the subsequent product.

[0011] Preferably, the bottom end of the rotating shaft is fixed with a bearing, and the bearing is connected with an auxiliary stirring blade, which can rotate relative to the rotating shaft. When the floating raw material acts on each auxiliary stirring blade, the auxiliary stirring blade drives the outer ring of the bearing to rotate relative to the inner ring of the bearing and the rotating shaft, thereby improving the floating speed of the raw material at the bottom, facilitating the mixing effect of the raw material inside the inner shell, and the rotating auxiliary stirring blade can also break up the larger lumps in the raw material, thereby improving the homogenization and avoiding the blockage of the sliding mesh and the lower discharge pipe.

[0012] Preferably, the inner shell is provided with a piston assembly, which includes a telescopic cylinder fixed at the center of the inner bottom of the inner shell, and the telescopic cylinder includes a liftable cylinder column connected with a piston plate, and the side of the piston plate is provided with a sealing ring matched with the inner wall of the inner shell, and the cylinder column can drive the piston plate to lift.

[0013] Preferably, the opening position of the discharge pipe communicated with the inner shell is within the lifting sliding range of the piston plate. After the first mixing is completed, additional raw materials need to be added according to the needs and the ratio, at this time, the raw materials inside the inner shell have been mixed, the telescopic cylinder is controlled to make the cylinder column descend, at this time, the piston plate and the sealing ring descend, the overall liquid level in the inner shell moves downward, but does not lower than the opening height of the discharge pipe, at this time, the valve body at the communication position between the inner shell and the outer shell is opened, so that the raw materials added into the outer shell can smoothly enter the inner shell for continuous stirring and mixing, preventing the liquid level in the inner shell from being too high to cause the raw materials in the outer shell to be unable to enter the inner shell under the action of liquid pressure, and preventing the raw materials in the inner shell from flowing outward. After the raw materials are finally mixed and stirred, the telescopic cylinder is controlled to make the cylinder column drive the piston plate to descend until the opening of the discharge pipe is below, so as to smoothly discharge the prepolymer compound.

[0014] Preferably, the outer shell is connected with an auxiliary feeding assembly, which includes a feeding pipe penetrating through the top of the outer shell, and one end of the feeding pipe located in the outer shell is communicated with a discharge pipe, and symmetrically arranged between the discharge pipe and the inner wall of the outer shell are baffles, and the baffles are fixed on the inner wall of the outer shell, and a swing piece is rotatably arranged between the baffles. The raw materials added from outside flow out of the discharge pipe through the feeding pipe and contact the swing piece, the swing piece swings relative to the two baffles after being impacted by the fluid, and the fluid is guided to the inner wall of the outer shell, so that the raw materials flow down along the inner wall, which can effectively avoid the formation of bubbles by the impact of the added raw materials on the liquid level of the existing raw materials, is not conducive to the prepolymerization, and can also slow down the addition rate of the raw materials, on the one hand, it can avoid uneven concentration of the mixture, on the other hand, the large lumps can be intercepted by the swing piece, and the lumps intercepted on the swing piece are continuously broken by the impact of the raw materials flowing out of the discharge pipe, thereby effectively avoiding the blockage of the valve body by the lumps after falling, which causes the subsequent raw materials to be unable to enter the inner shell for mixing.

[0015] Preferably, the swing member comprises a swing shaft capable of rotating relative to the partition plate, and a return coil spring is arranged between any partition plate and the swing shaft. After the swing member is inclined relative to one side wall, the return spring makes the swing member incline to the other side through deformation, so as to be circulated and reciprocated until the raw material stops being added, which is favorable to uniformly distributing the raw liquid from the two sides of the inner wall of the shell body and improving the mixing and homogenization rate.

[0016] Preferably, the feeding pipe is connected with a pump body at one end outside the top of the shell body, and the pump body is connected with a feeding hopper through a pipeline. The raw material to be mixed is introduced into the feeding hopper, and the raw material is discharged from the feeding pipe to the shell body, and the pump body can be controlled to accelerate the delivery of liquid when the flowability of the raw material is poor.

[0017] The present application has the following beneficial effects due to the adoption of the stirring component to improve the mixing effect of the raw material in the inner shell: the mixing fan blade and the spiral stirring blade form multi-directional mixing of the raw material in the inner shell, which is favorable to the formation of the polymer raw liquid; the spiral stirring blade can drive the bottom layer of raw material to float up, so that the raw material of multiple layers is fully mixed, the polymer raw liquid is homogenized, and the subsequent reaction is also facilitated; the piston plate is lifted during stirring to perform defoaming treatment on the raw liquid, improve the viscosity of the polymer, and improve the product performance; the auxiliary stirring blade at the bottom of the rotating shaft is acted on by the flowing raw liquid and rotates to break the large block-shaped precipitate at the bottom, which is favorable to the homogenization of the polymer and can prevent blockage during discharge; the swing member makes the added raw material flow down along the inner wall of the shell body through swinging, reduces the generation of bubbles of the raw material, and is conducive to the reaction. Therefore, the present application is a continuous polymerization spandex raw liquid non-wavy efficient pre-polymer special conical reaction device capable of fully and stably mixing chemical raw materials and realizing defoaming of the raw materials to improve the viscosity of the compound. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a front view of the present application;

[0019] Figure 2 is a half-section view of the inner shell;

[0020] Figure 3 is an enlarged view of the A area;

[0021] Figure 4 is a view of the stirring assembly;

[0022] Figure 5 is a view of the spiral stirring blade;

[0023] Figure 6 is a view of the sliding mesh plate;

[0024] Figure 7 is a view of the partition plate;

[0025] Figure 8 is a view of the swing member;

[0026] Figure 9 The schematic diagram of reset coil spring is shown in the figure.

[0027] Figure 10 The schematic diagram of telescopic air cylinder is shown in the figure.

[0028] The figure shows the internal housing 1, the internal flow-through port 10, the electric control valve 11, the external housing 2, the external flow-through port 20, the stirring assembly 3, the rotating shaft 30, the bent plate 31, the stirring fan blade 32, the helical stirring blade 33, the driving motor 34, the limiting ring 36, the sliding mesh plate 37, the bearing 38, the auxiliary stirring blade 39, the piston assembly 4, the telescopic air cylinder 40, the air cylinder column 41, the piston plate 42, the sealing ring 43, the discharge pipe 5, the electromagnetic valve 50, the discharge hopper 51, the auxiliary feeding assembly 6, the feeding pipe 60, the discharging pipe 61, the partition plate 62, the swing piece 63, the swing shaft 630, the reset coil spring 64, the pump body 65, the feeding hopper 66, and the temperature control shell 7. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be further described in detail in combination with the specific embodiments and the drawings:

[0030] Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0031] Referring to the drawings Figure 1 - the drawings Figure 3 The continuous polyurethane raw solution high-efficiency pre-polymer special conical reaction device comprises an internal housing 1, the internal housing 1 is a hollow housing with top and bottom ends sealed, a conical curved surface with a diameter decreasing downward is arranged on the inner wall of the internal housing 1, an external housing 2 is fixedly sleeved on the outer side of the internal housing 1, the outer side bottom of the external housing 2 is a conical curved surface, the external housing 2 is connected with an auxiliary feeding assembly 6, the internal housing 1 is symmetrically provided with an internal flow-through port 10 on the side wall, the external housing 2 is provided with an external flow-through port 20 at the position corresponding to the internal flow-through port 10, an electric control valve 11 is fixedly arranged in the internal flow-through port 10 and located on the inner side of the internal housing 1, a stirring assembly 3 is arranged in the internal housing 1, the internal housing 1 is provided with a discharge pipe 5 in communication with the outside, the discharge pipe 5 is located below the horizontal height of the conical curved surface on the inner side of the internal housing 1, raw materials can be injected into the external housing 2 through the auxiliary feeding assembly 6, and the electric control valve 11 is controlled to make the raw materials enter the internal housing 1 to generate a mixing pre-polymer reaction, after the reaction is completed, the internal housing 1 accelerates the raw solution to be discharged from the discharge pipe 5 through the conical curved surface, and the residual liquid is reduced to be stored in the internal housing 1.

[0032] Referring to the drawings Figure 4 - the drawings Figure 5, the stirring assembly 3 comprises a rotating shaft 30 rotatably arranged at the center of the inner shell 1, the rotating shaft 30 is symmetrically connected with a bent plate 31 on the side, the bent plate 31 is arranged with stirring blades 32 at intervals, and the rotating shaft 30 is wound with a spiral stirring blade 33.

[0033] When the rotating shaft 30 rotates, the stirring blades 32 on the side of the bent plate 31 rotate the raw materials in the inner shell 1, at this time, the chemical raw materials (diisocyanate and polytetramethylene ether glycol) form a rotational flow around the inner wall of the inner shell 1 and mix, which is beneficial to reduce the residue of the raw materials on the inner wall of the inner shell 1, at the same time, the rotating shaft 30 drives the spiral stirring blade 33 wound at the center to form an upward rotational flow and mixing of the raw materials at the position close to the rotating shaft 30 of the inner shell 1, the rotational flow close to the inner wall of the inner shell 1 sinks under the influence of gravity and the conical inner wall of the inner shell 1, and the rotational flow after sinking is driven by the upward rotational flow at the center to rise again, so as to form liquid exchange between the outer layer of the raw liquid close to the inner wall of the inner shell 1 and the inner layer of the raw liquid close to the rotating shaft 30, effectively improve the homogenization of the raw liquid, thereby increasing the viscosity of the prepolymer, which is beneficial to the subsequent chain growth reaction efficiency, the spiral stirring blade 33 and the stirring blades 32 arranged on the side of the rotating shaft 30 reduce the rotational resistance of the raw materials while ensuring sufficient stirring, thereby improving the stirring efficiency, when the temperature of the added raw materials is inconsistent, the stirring blades 32 and the spiral stirring blade 33 form stirring and mixing at different positions of the inner shell 1, thereby balancing the temperature difference of the raw materials and avoiding turbulent flow caused by large temperature difference of the raw materials, thereby affecting the stirring efficiency.

[0034] The driving motor 34 is arranged upward at the center of the top of the inner shell 1, and the rotating shaft 30 penetrates through the top of the inner shell 1 and is connected with the driving motor 34. The driving motor 34 can drive the rotating shaft 30 to rotate at high speed, the rotation of the rotating shaft 30 is controlled by controlling the start and stop of the driving motor 34, the driving motor 34 is turned off when the raw materials are stirred and need to be discharged, so as to avoid that the pressure difference caused by rotation causes the raw materials to be difficult to discharge from the discharge pipe 5 below, at the same time, the rotating speed of the rotating shaft 30 can be adjusted by the driving motor 34, so as to avoid that too high rotating speed causes too many bubbles when the mixed raw materials, thereby affecting the subsequent chain growth reaction, the rotating speed can be adjusted to be fast when the raw materials are washed with clean water, thereby improving the washing effect.

[0035] Referring to the drawings Figure 5 - the drawings Figure 6 The rotating shaft 30 is arranged with limiting rings 36 at intervals at the bottom, the rotating shaft 30 is connected with a sliding mesh plate 37 located between the limiting rings 36, and the sliding mesh plate 37 can slide axially relative to the rotating shaft 30.

[0036] The sliding mesh plate 37 at the bottom can effectively separate the materials, and the bubbles generated during the stirring process are broken after contacting the mesh plate, thereby improving the defoaming and pressure stabilizing effect of the polymerization stock solution, reducing the fluctuation of the subsequent reaction, and improving the product performance. The spiral stirring blade 33 wound on the rotating shaft 30 drives the bottom material to float and act on the sliding mesh plate 37, which on the one hand makes the sliding mesh plate 37 axially slide on the rotating shaft 30, further improving the mixing effect of the materials at different heights, and on the other hand filters and disperses the large agglomerates that sink to the bottom of the mixed materials, homogenizes the mixed stock solution, which is conducive to improving the viscosity of the prepolymer, further reducing the reaction fluctuation of the prepolymer, and improving the performance of the product formed subsequently.

[0037] The bottom end of the rotating shaft 30 is fixed with a bearing 38, and the bearing 38 is connected with an auxiliary stirring blade 39 which can rotate axially relative to the rotating shaft 30.

[0038] When the floated material acts on each auxiliary stirring blade 39, the auxiliary stirring blade 39 drives the outer ring of the bearing 38 to rotate relative to the inner ring of the bearing 38 and the rotating shaft 30, which helps to improve the floating speed of the bottom material and is conducive to improving the mixing effect of the material inside the inner shell 1. The rotating auxiliary stirring blade 39 can also break up the large agglomerates in the material, improving homogenization while avoiding large agglomerates from clogging the discharge pipe 5 when the stock solution is discharged, causing the mixture to be unable to be discharged.

[0039] Referring to the accompanying drawings Figure 10 The inner shell 1 is provided with a piston assembly 4, which includes a telescopic cylinder 40 fixed at the center of the inner bottom of the inner shell 1. The telescopic cylinder 40 includes a liftable cylinder column 41, which is connected with a piston plate 42. The side of the piston plate 42 is provided with a sealing ring 43 matched with the inner wall of the inner shell 1. The cylinder column 41 can drive the piston plate 42 to lift.

[0040] The opening position of the discharge pipe 5 communicating with the inner shell 1 is within the lifting sliding range of the piston plate 42.

[0041] After the first mixing is completed, additional raw materials need to be added according to the needs and the ratio. At this time, the raw materials inside the inner shell 1 have been mixed. The telescopic cylinder 40 is controlled to make the cylinder column 41 move downward. At this time, the piston plate 42 and the sealing ring 43 move downward, making the overall liquid level in the inner shell 1 move downward, but not lower than the height of the opening of the discharge pipe 5. At this time, the valve body at the communication between the inner shell 1 and the outer shell 2 is opened, so that the raw materials added into the outer shell 2 can smoothly enter the inner shell 1 for further stirring and mixing, preventing the liquid level in the inner shell 1 from being too high to cause the raw materials in the outer shell 2 to be unable to enter the inner shell 1 under the action of liquid pressure, and preventing the raw materials in the inner shell 1 from flowing outward. After the raw materials are finally mixed and stirred, the telescopic cylinder 40 is controlled to make the cylinder column 41 drive the piston plate 42 to move downward until below the opening of the discharge pipe 5, so as to smoothly discharge the prepolymer.

[0042] Referring to the drawings Figure 7 The auxiliary feeding assembly 6 is connected to the outer shell 2, and the auxiliary feeding assembly 6 comprises a feeding pipe 60 passing through the top of the outer shell 2. One end of the feeding pipe 60 in the outer shell 2 is connected with a discharging pipe 61. Symmetrical partitions 62 are arranged below the discharging pipe 61. The partitions 62 are fixed to the inner wall of the outer shell 2. A swing member 63 is rotatably arranged between the partitions 62. The raw materials added from outside flow out of the discharging pipe 61 through the feeding pipe 60 and contact the swing member 63. The swing member 63 swings relative to the two partitions 62 after being impacted by the fluid, and guides the fluid to the inner wall of the outer shell 2, so that the raw materials flow down along the inner wall. This can effectively avoid the formation of bubbles by the impact of the added raw materials on the liquid surface of the existing raw materials, which is not conducive to the prepolymerization reaction. At the same time, the feeding rate of the raw materials can be slowed down. On the one hand, this can avoid uneven concentration of the mixture. On the other hand, large block materials can be intercepted by the swing member 63. The block materials intercepted on the swing member 63 are continuously impacted by the raw materials flowing out of the discharging pipe 61 and are broken down, which effectively avoids the blockage of the valve body by the block materials falling down, so that the subsequent raw materials cannot enter the inner shell 1 for mixing.

[0043] Referring to the drawings Figure 8 - the drawings Figure 9 The swing member 63 comprises a swing shaft 630 which can rotate relative to the partitions 62. A return coil spring 64 is arranged between any partition 62 and the swing shaft 630. After the swing member 63 inclines relative to one side wall, the return spring makes the swing member 63 incline to the other side by deformation. This is repeated until the addition of the raw materials stops. This is conducive to the uniform distribution of the raw liquid and the flow of the raw liquid from both sides of the inner wall of the outer shell 2, and improves the mixing and homogenization rate.

[0044] Referring to the drawings Figure 1 One end of the feeding pipe 60 located outside the top of the outer shell 2 is connected with a pump body 65. The pump body 65 is connected with a feeding hopper 66 through a pipeline. The raw materials to be mixed are introduced into the feeding hopper 66. The raw materials flow out of the discharging pipe 61 into the outer shell 2 through the feeding pipe 60. When the flowability of the raw materials is poor, the pump body 65 can be controlled to accelerate the delivery of the liquid.

[0045] The outer shell 2 is also connected with a temperature control shell 7 for controlling the temperature of the raw materials in the outer shell 2. Two groups of independent flow channels are embedded in the wall of the temperature control shell 7. A heat source liquid pump and a cold source liquid pump are respectively connected to the two groups of flow channels. The two liquid pumps make the heating liquid and the cooling liquid circulate in the flow channels, so as to realize the temperature control and conduction from the temperature control shell to the outer shell 2. When the swing member 63 swings back and forth under the action of the return coil spring 64, the raw materials flow down along the two side walls of the inner shell 2. This is conducive to the full contact of the raw materials with the wall of the outer shell 2 and the change of the temperature of the raw materials, which is conducive to the stirring and mixing reaction.

[0046] It should be noted that the discharge pipe 5 is connected with an electromagnetic valve 50 for discharging the mixture and a discharge hopper 51 for collecting the mixture at one end outside the inner shell 1.

[0047] The use method of the present application is as follows: open the electric control valve 11, add the chemical raw materials into the feeding hopper 66 in sequence, the chemical raw materials flow out from the feeding pipe 60 under the action of the pump body 65, and flow down along the inner cavity wall of the outer shell 2 under the action of the swing member 63 and the partition plate 62, and then pass through the outer flow port 20 and the inner flow port 10 to the inside of the inner shell 1, after the addition of the raw materials is completed, control the driving motor 34 to rotate the stirring assembly 3 to stir and mix the raw materials, when it is needed to add the raw materials during the mixing, close the driving motor 34, control the telescopic air cylinder 40 to drive the piston plate 42 to move downward, the liquid level of the mixture in the upper inner shell 1 is lowered, open the electric control valve 11, so that the subsequent raw materials entering the outer shell 2 can smoothly enter the inner shell 1, after the addition is completed, close the electric control valve 11, start the driving motor 34, and the stirring assembly 3 continues to mix the raw materials, after the mixing is completed, control the telescopic air cylinder 40 to drive the piston plate 42 to move downward to below the discharge pipe 5, the raw materials flow downward at a high speed under the action of the tapered curved surface of the inner wall of the inner shell 1, and are discharged from the discharge hopper 51 to the collecting container under the action of the electromagnetic valve 50.

[0048] It will be obvious to a person skilled in the art that, without departing from the scope of the application, the application can be implemented in other specific forms. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and therefore all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the scope of the claims. It will be obvious to a person skilled in the art that, without departing from the scope of the application, the application can be implemented in other specific forms. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and therefore all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the scope of the claims.

Claims

1. A continuous polyurethane solution polymerization high-efficiency pre-polymer special conical reaction device without fluctuation, comprising: An inner shell (1) is provided with an outer shell (2) outside, the inner shell (1) is communicated with the outer shell (2) and is provided with a valve body, Characterized in that: the inner shell (1) is internally provided with a stirring assembly (3) for mixing chemical raw materials, the stirring assembly (3) can rotate, Wherein, the inner shell (1) is provided with a discharge pipe (5) outside, The stirring assembly (3) includes a rotating shaft (30) rotatably arranged at the center of the inner shell (1), the rotating shaft (30) is symmetrically connected with a bent plate (31) on the side, the bent plate (31) is provided with stirring blades (32) at intervals, and the rotating shaft (30) is provided with a spiral stirring blade (33) The bottom of the rotating shaft (30) is provided with a limiting ring (36), the rotating shaft (30) is connected with a sliding mesh plate (37) between the limiting rings (36), and the sliding mesh plate (37) can slide axially relative to the rotating shaft (30).

2. The continuous polyurethane pre-polymer special conical reaction device without fluctuation for high efficiency of raw solution according to claim 1, characterized in that: The top of the inner shell (1) is sealed and provided with a driving motor (34), the rotating shaft (30) penetrates through the top of the inner shell (1) and is connected with the driving motor (34).

3. The continuous polyurethane solution without fluctuation and high efficiency pre-polymer special conical reaction device according to claim 1, characterized in that: The bottom end of the rotating shaft (30) is fixed with a bearing (38), the bearing (38) is connected with an auxiliary stirring blade (39), and the auxiliary stirring blade (39) can rotate axially relative to the rotating shaft (30).

4. The continuous polyurethane pre-polymer special conical reaction device without fluctuation for high efficiency of raw solution according to claim 1, characterized in that: The inner shell (1) is provided with a piston assembly (4), the piston assembly (4) includes a telescopic cylinder (40) fixed at the center of the inner bottom of the inner shell (1), the telescopic cylinder (40) includes a liftable cylinder column (41), the cylinder column (41) is connected with a piston plate (42), the piston plate (42) is provided with a sealing ring (43) matched with the inner wall of the inner shell (1) on the side, and the cylinder column (41) can drive the piston plate (42) to lift.

5. The continuous polyurethane pre-polymer special conical reaction device without fluctuation for high efficiency of polyurethane solution according to claim 4, characterized in that: The position height of the discharge pipe (5) at the communicating position of the inner wall of the inner shell (1) is within the lifting sliding range of the piston plate (42).

6. The continuous polyurethane pre-polymer special conical reactor for preparing high quality polyurethane solution without fluctuation according to claim 1, characterized in that: The outer shell (2) is connected with an auxiliary feeding assembly (6), the auxiliary feeding assembly (6) includes a feeding pipe (60) penetrating through the top of the outer shell (2), one end of the feeding pipe (60) in the outer shell (2) is communicated with a discharging pipe (61), the lower part of the discharging pipe (61) is symmetrically provided with a partition plate (62), the partition plate (62) is fixed to the inner wall of the outer shell (2), and the partition plate (62) is rotatably provided with a swing piece (63) between them.

7. The continuous polyurethane pre-polymer special conical reactor for preparing high quality polyurethane solution without fluctuation according to claim 6, characterized in that: The swing piece (63) includes a swing shaft (630) which can rotate relative to the partition plate (62), and a reset coil spring (64) is arranged between any one of the partition plates (62) and the swing shaft (630).

8. The continuous polyurethane pre-polymer special conical reactor for preparing high quality polyurethane solution without fluctuation according to claim 7, characterized in that: One end of the feeding pipe (60) outside the top of the outer shell (2) is connected with a pump body (65), and the pump body (65) is connected with a feeding hopper (66) through a pipeline.

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