Material preparation system

Abstract

The utility model discloses a material preparation system which comprises a reaction device provided with at least two raw material inlets and at least one product outlet; the first raw material storage device is communicated with the reaction device through a first raw material inlet and is used for conveying a first raw material into the reaction device in a closed manner; the second raw material storage device is communicated with the reaction device through a second raw material inlet and is used for conveying a second raw material into the reaction device in a closed manner; and the product storage device is communicated with the reaction device through the product outlet and is used for conveying the reaction product from the reaction device into the product storage device in a closed manner, and the product storage device is also provided with a discharge port which can be communicated with the outside or closed. According to the material preparation system, moisture in air can be prevented from entering the material preparation system during feeding and reaction, so that reaction materials are prevented from going bad, tackifying caused by the fact that products are exposed in the air during discharging can be avoided, and it is guaranteed that the products have normal performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical synthesis equipment technical field more specifically, relate to a material preparation system. BACKGROUND

[0002] The process of preparing polyurethane prepolymer, hot melt adhesive and other substances in the laboratory needs to be dehydrated, and the process of preparing related products in the laboratory generally comprises the following steps: first, polyether, polyester polyol and other raw materials are added to the reaction kettle, then the reaction kettle is closed, stirring is started, vacuum is extracted, the heating device is opened, the temperature is set, and water is removed under the conditions of high temperature heating and vacuum extraction, the temperature is reduced after water removal, isocyanate (MDI, etc.) is added, the temperature is increased after reacting for a period of time, until the reaction is completed, the reaction kettle is opened, and finally the material in the reaction kettle is poured out.

[0003] However, the above prior art has the following disadvantages: when MDI is added to the reaction kettle, the kettle needs to be opened for feeding, at this time, the moisture in the air will enter the reaction kettle, which may cause the material inside to deteriorate, and when discharging, the reaction kettle also needs to be opened, and then the material inside is poured out, at this time, the material will also be exposed to the air, which will cause the material to increase in viscosity, for example, a prepolymer prepared in the laboratory has a viscosity of 19000 cps before discharging, and the viscosity will increase to 22000 cps after discharging, thereby causing the performance to deteriorate. Therefore, it is urgent to develop a material preparation system, so that the material inside the system will not be in contact with the outside air during the entire process, so as to ensure that the material does not deteriorate or increase in viscosity. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides a material preparation system, which can avoid the moisture in the air entering the system during feeding, avoid the reaction material deteriorating, and also avoid the product being exposed to the air during discharging, thereby causing the product to increase in viscosity and ensuring that the product has normal performance.

[0005] The utility model provides a material preparation system, which comprises:

[0006] The reaction device has at least two raw material inlets and at least one product outlet;

[0007] The first raw material storage device is in communication with the reaction device through the first raw material inlet and is used to transport the first raw material to the reaction device in a sealed manner;

[0008] The second raw material storage device is in communication with the reaction device through the second raw material inlet and is used to transport the second raw material to the reaction device in a sealed manner;

[0009] A product storage device is in communication with the reaction device through the product outlet for closed transport of the reaction product from the reaction device to the product storage device, and the product storage device also has a discharge port that can be in communication with the outside or closed.

[0010] Preferably, in the above material preparation system, the reaction device comprises:

[0011] A reaction container having a stirring component, a product outlet on the side, and a top cover having a first through hole and a second through hole;

[0012] A vacuum component that enters the internal space of the reaction container through the first through hole via a vacuum pipeline;

[0013] A first inert gas container that enters the internal space of the reaction container through the second through hole via a first gas inlet pipeline, for pressing the product out of the product outlet using the pressure of the inert gas.

[0014] Preferably, in the above material preparation system, the bottom of the reaction container also has a third through hole, and the inert gas container also enters the internal space of the reaction container through the third through hole via a second gas inlet pipeline, for enhancing the water removal efficiency of the internal space.

[0015] Preferably, in the above material preparation system, the outer periphery of the reaction container has a first electric heating component, and the outer periphery of the first electric heating component is sleeved with a first thermal insulation jacket.

[0016] Preferably, in the above material preparation system, the outer periphery of the reaction container also has an electric heating switch electrically connected to the first electric heating component.

[0017] Preferably, in the above material preparation system, the first raw material storage device comprises:

[0018] A first raw material container provided with a cover having a fourth through hole and a fifth through hole, and a first raw material outlet;

[0019] A second inert gas container that enters the internal space of the first raw material container through the fourth through hole via a third gas inlet pipeline;

[0020] A pressure relief valve installed at the position of the fifth through hole.

[0021] Preferably, in the above material preparation system, the outer periphery of the first raw material container is provided with a second electric heating component, and the outer periphery of the second electric heating component is sleeved with a second thermal insulation jacket;

[0022] The outer peripheral portion of the first raw material container is further provided with a temperature sensor, and the temperature sensor is further connected to the electric heat tracing controller to control the temperature of the second electric heat tracing component according to the temperature detected by the temperature sensor.

[0023] Preferably, in the above material preparation system, the third gas inlet pipe is further provided with a pressure gauge, a pressure reducing valve and a flow meter.

[0024] Preferably, in the above material preparation system, the second raw material storage device comprises:

[0025] a second raw material container;

[0026] a high viscosity pump in communication with the second raw material container through a second raw material outlet valve, and the other end of the high viscosity pump is used to be connected to the second raw material inlet.

[0027] Preferably, in the above material preparation system, the product storage device comprises:

[0028] a product container, and a cover plate with a sixth through hole and a seventh through hole;

[0029] a product feeding pipe, a first end of which is in communication with the product outlet of the reaction device, and a second end of which enters the internal space of the product container through the sixth through hole, and a product feeding valve is further arranged on the product feeding pipe;

[0030] a third inert gas container, which enters the internal space of the product container through the seventh through hole through a fourth gas inlet pipe;

[0031] The discharge port is located at the side of the product container near the bottom.

[0032] From the above technical scheme can be seen, the utility model provides above -mentioned material preparation system, because including reaction device, has at least two raw material inlets and at least one product outlet;First raw material storage device, through first raw material inlet with reaction device intercommunication, to first raw material closed -type delivery to reaction device in;Second raw material storage device, through second raw material inlet with reaction device intercommunication, to second raw material closed -type delivery to reaction device in;Product storage device, through product outlet with reaction device intercommunication, to reaction product from reaction device closed -type delivery to product storage device in, product storage device still has the discharge gate that can with outside intercommunication or close, visible this system's raw material inlet and product outlet will not directly with outside intercommunication, whether in the process of feeding and reaction or in the process of discharging all need not to make the reaction device with outside intercommunication, therefore can avoid the moisture in the air when adding material to enter therein, avoid the reaction material metamorphic, also can avoid the product when discharging to expose in the air and lead to tackify, guarantee product has normal performance. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description only is the embodiment of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, still can obtain other drawings according to the provided drawings.

[0034] Figure 1 It is the whole schematic diagram of the embodiment of the material preparation system provided by the utility model;

[0035] Figure 2 It is the component schematic diagram of the reaction device of the material preparation system provided by the utility model;

[0036] Figure 3 It is the component schematic diagram of the first raw material storage device of the material preparation system provided by the utility model;

[0037] Figure 4 It is the component schematic diagram of the second raw material storage device of the material preparation system provided by the utility model;

[0038] Figure 5 It is the component schematic diagram of the product storage device of the material preparation system provided by the utility model;

[0039] Figure 6 It is the whole connection schematic diagram of the material preparation system provided by the utility model. DETAILED DESCRIPTION

[0040] The core of the utility model discloses a material preparation system, can avoid the moisture in air when feeding and reaction to enter, avoid the reaction material to deteriorate, also can avoid the product to expose in air when discharging to cause tackification, guarantee the product to have normal performance, the system can but not limited to be used to prepare single component polyurethane prepolymer, hot melt adhesive or textile glue, wherein, hot melt adhesive is the glue water that melts into liquid use after heating.

[0041] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0042] The utility model provides a kind of material preparation system's embodiment as shown in the figure, Figure 1 Figure 1 It is the overall schematic diagram of the embodiment of the utility model, and the material preparation system can include:

[0043] Reaction device 1 has at least two raw material inlets 11,12 and at least one product outlet 13, the reaction device 1 inside is used for the reaction of two or more raw materials, and generates product, and its raw material inlet can but not limited to be arranged at the side of reaction device 1, and preferably is close to the position of upper portion to avoid being blocked, and preferably can be switched, that is, when raw material comes in, let raw material inlet open, and after raw material is transported, let raw material inlet close, to avoid that raw material returns from here in subsequent reaction process, and the above-mentioned product outlet 13 can but not limited to be arranged at the side of reaction device 1, and preferably is close to the position of bottom, so that the product can be better guaranteed not to be residual, of course, this can be selected according to actual needs, and can be arranged at the bottom surface of reaction device 1 under other conditions, which is not limited here, and the product outlet 13 can also be switchable, when discharging, open the product outlet, and when discharging is finished, close the product outlet, to avoid the problem of material leakage in subsequent reaction process, and the number of raw material inlet can also be 3 or more, which depends on how many kinds of raw materials are required for reaction, and the product outlet 13 can also be set to 2 or more according to actual needs, so that the discharging speed can be faster, which can be selected according to actual needs;

[0044] ​The first raw material storage device 2 is communicated with the reaction device 1 through the first raw material inlet 11, and is used for closed conveying of the first raw material into the reaction device 1. It is to be noted that the first raw material storage device 2 can store the first raw material in advance, and then is connected to the first raw material inlet 11 of the reaction device 1, so as to ensure that the connection of the two is not communicated with the external environment. When the reaction device 1 needs to input the first raw material, the first raw material in the first raw material storage device 2 is conveyed into the reaction device 1 by using some mode including pumping. The process is carried out in a closed condition, so that the quality of the raw material can be better ensured, and the cover of the reaction device is not opened to input the raw material, so as to introduce the external air to cause a part of the raw material to deteriorate. The input mode can be pressure feeding or extrusion, and the like, which can be selected according to the actual needs.

[0045] The second raw material storage device 3 is communicated with the reaction device 1 through the second raw material inlet 12, and is used for closed conveying of the second raw material into the reaction device 1. It is to be noted that the second raw material storage device 3 can also store the second raw material in advance, and then is connected to the second raw material inlet 12 of the reaction device 1, so as to ensure that the connection of the two is not communicated with the external environment. When the reaction device 1 needs to input the second raw material, the second raw material in the second raw material storage device 3 is conveyed into the reaction device 1 by using a related mode. The process is carried out in a closed condition, so that the quality of the raw material can be better ensured, and the cover of the reaction device is not opened to input the raw material, so as to introduce the external air to cause a part of the raw material to deteriorate. The input mode can be but is not limited to pumping, pressure feeding or extrusion, which can be selected according to the actual needs.

[0046] The product storage device 4 is communicated with the reaction device 1 through the product outlet 13, and is used for sealingly conveying the reaction product from the reaction device 1 to the product storage device 4. The product storage device 4 also has a discharge port 41 which can be communicated with the outside or closed. It should be noted that the product storage device 4 plays a role of a buffer. In this case, after the reaction is completed, the reaction product in the reaction device 1 can be sealedly conveyed to the product storage device 4 for temporary storage. Since the product storage device 4 is also sealed, the product will not deteriorate during the storage in the product storage device 4. The process from the reaction device 1 to the product storage device 4 is also sealed, so that the product transmission process will not cause the product to deteriorate. After the transmission is completed, the reaction device 1 can continue the next reaction process. When the product needs to be transported out, the discharge port 41 of the product storage device 4 is opened, and the product can also be sealedly conveyed to other containers. When the transmission is completed, the discharge port 41 is closed to prevent the outside air from entering the product storage device 4. It should be noted that the opening and closing of the discharge port 41 can be realized by an electric valve. Of course, other ways can also be used according to actual needs, which are not limited here.

[0047] As can be seen from the above technical solutions, in the embodiment of the material preparation system provided by the utility model, the reaction device has at least two raw material inlets and at least one product outlet; the first raw material storage device is communicated with the reaction device through the first raw material inlet and is used for sealingly conveying the first raw material to the reaction device; the second raw material storage device is communicated with the reaction device through the second raw material inlet and is used for sealingly conveying the second raw material to the reaction device; and the product storage device is communicated with the reaction device through the product outlet and is used for sealingly conveying the reaction product from the reaction device to the product storage device. The product storage device also has a discharge port which can be communicated with the outside or closed. It can be seen that the raw material inlets and the product outlet of the system are not directly communicated with the outside. Whether in the feeding process or in the discharging process, the reaction device does not need to be communicated with the outside, so that the moisture in the air can be prevented from entering the reaction device during feeding, the reaction material can be prevented from deteriorating, and the product can be prevented from being exposed to the air during discharging to cause tackiness, so that the product has normal performance.

[0048] In one specific embodiment of the above material preparation system, with reference to Figure 2 , Figure 2 The utility model provides a kind of reaction device of material preparation system, and the above reaction device 1 specifically can include:

[0049] The reaction container 14, the two raw material inlets 11, 12 can be arranged on the side of the reaction container 14, and the two raw materials are input into the reaction container 14 for reaction. The reaction container 14 also has a stirring component 15, which can be a stirring paddle, for stirring the various raw materials to mix them evenly to accelerate the reaction. The stirring paddle motor 151 can be used to drive the stirring paddle and control the stirring speed. The reaction container 14 can have the product outlet 13 on the side, and the top cover 16 can have the first through hole 161 and the second through hole 162. The top cover 16 can be sealed and connected to the reaction container 14 by screwing to prevent external air from entering the reaction container 14 and causing the internal material to deteriorate. The top cover 16 can have a first transparent filling window 163. During the filling process, the operator can observe the material level inside the reaction container 14 through the window to determine when the filling is complete, avoiding overfilling or underfilling. The window can be made of transparent glass, and its surrounding area should be sealed to the top cover 16 to prevent external air from entering the reaction container 14 through the air gap between the two;

[0050] The vacuum component 17, which can be a vacuum pump, is used to extract the water vapor from the raw materials and dry the raw materials. The vacuum pipeline 171 connected to the vacuum component 17 is generally located in the upper space of the reaction container 14 that does not come into contact with the raw materials, so as not to block the vacuum pipeline. It should be noted that the vacuum pipeline 171 can also be provided with a vacuum pipeline valve 172, which is opened when vacuumizing and closed after vacuumizing to prevent gas backflow;

[0051] The first inert gas container 18, which can be but is not limited to nitrogen, is connected to the reaction container 14 through the first gas inlet pipeline 181 to press the product out of the product outlet 13 using the pressure of the inert gas. Figure 2The shown nitrogen (N2), also according to actual needs can choose argon or helium and so on, as long as not with the reaction vessel of various raw materials and oxidation reaction or, using this first gas pipeline 181 from the upper input reaction vessel 14 inert gas in the reaction vessel 14, will cause a certain pressure inside the product, when the product outlet is opened, can use this pressure from the reaction vessel 14 to squeeze out the product to the product storage device 4 to achieve the temporary storage of the product, the product discharge process is not in contact with the external environment, so as to avoid the air into the product quality, also need to be explained, the first gas pipeline 181 can also be provided with the first gas pipeline valve 182, when the upper input reaction vessel 14, then open the first gas pipeline valve 182, and when the gas is finished, then close the first gas pipeline valve 182, in addition, the first inert gas container 18 can also be installed with the barometer, so that the operator can understand the internal pressure at any time.

[0052] In another embodiment of the above material preparation system, with reference to Figure 2 , the bottom of the reaction vessel 14 can also have a third through hole 19, and the inert gas container 18 also enters the internal space of the reaction vessel 14 through the third through hole 19 by the second gas pipeline 191, in order to enhance the water removal efficiency of the internal space, it should be noted that in the water removal process, the upper part of the reaction vessel 14 is under negative pressure, so that the water vapor in the raw material is continuously adsorbed, and at this time the inert gas is input from the second gas pipeline 191 to the third through hole 19, so that the inert gas enters the raw material, and the negative pressure at the upper part of the raw material drives the inert gas in the raw material to move upward and separate from the raw material, and finally be extracted from the reaction vessel 14, in this process, the inert gas will carry the water molecules in the raw material together with the raw material, and finally be extracted, thereby the embodiment with this structure can greatly enhance the efficiency of vacuum water removal, compared with the water removal scheme of about 1.5 to 2.5 hours in the prior art, the embodiment with the inert gas carrying water vapor out of the raw material can shorten the water removal time to less than 0.5 hours.

[0053] In further embodiments, with reference to Figure 2The outer periphery of the reaction container 14 can be provided with a first electric heating element 141, and the outer periphery of the first electric heating element 141 can be sleeved with a first heat insulation jacket 142. The electric heating element can uniformly heat each part of the outer periphery of the reaction container 14, so as to avoid the problems of overheating at the bottom and poor heating effect at the upper part in the existing oil bath heating mode or heating jacket heating mode. The uneven heating leads to the problem of differences between the front material, the middle material and the tail material in the same container. In addition, the first heat insulation jacket can avoid the operator's hands being scalded and prevent the heat from being rapidly lost to the external environment. On this basis, the outer periphery of the reaction container 14 can be further provided with an electric heating switch 143 electrically connected with the first electric heating element 141. The electric heating switch 143 can control the opening and closing of the first electric heating element 141, and the electric heating switch 143 can set the heating temperature to keep the reaction container 14 at a suitable temperature. For example, when MDI is stored in the reaction container 14, the temperature is usually set to 40℃, so that the MDI can be kept in a colorless and transparent liquid state. Of course, when other substances are stored in the reaction container 14, the heating temperature can be set to other values. When heating is needed, the first electric heating element 141 is turned on, and when the reaction is completed and heating is not needed, the first electric heating element 141 is turned off. In addition, the bottom of the reaction container 14 can be supported by a bottom support 144 to keep the reaction container 14 away from the ground. The bottom support 144 can be a plurality of rods, and gaps are reserved between the rods to accommodate other components. In this way, the third through hole 19 and the second air inlet pipe 191 can be effectively connected, and the second air inlet pipe valve 192 can be arranged on the second air inlet pipe 191 to open and close the second air inlet pipe 191. When the water removal process is performed, the second air inlet pipe valve 192 is opened, and when the water removal process is completed, the second air inlet pipe valve 192 is closed, which is more convenient for operation.

[0054] In another embodiment of the above-mentioned material preparation system, referring to Figure 3 , Figure 3 The first raw material storage device 2 can include:

[0055] The first raw material container 21 is provided with a cover 22 having a fourth through hole 221 and a fifth through hole 222, and a first raw material outlet 23. It should be noted that the cover 22 is sealingly connected with the first raw material container 21 to prevent air in the external environment from entering the first raw material container 21 and causing oxidation or pollution of the raw material. The first raw material outlet 23 is used to connect to the first raw material inlet 11 of the reaction device 1 to sealably transfer the first raw material into the reaction device 1.

[0056] The second inert gas container 24 is used to input inert gas into the first raw material container 21, so as to press the first raw material into the reaction device 1, and no air from the outside environment enters during the process, so that the purity of the first raw material can be better ensured. The third gas inlet pipe 241 can be provided with a third gas inlet pipe valve 28 to control the opening and closing of the third gas inlet pipe 241.

[0057] The pressure relief valve 25 is installed at the position of the fifth through hole 222, and the pressure relief valve 25 can be used to relieve pressure when the first raw material container 21 needs to be relieved, for example, when the first raw material in the container is used up and the first raw material needs to be added.

[0058] In a further embodiment, continuing to refer to Figure 3 The outer periphery of the first raw material container 21 can be provided with a second electric heating element 211, and the second electric heating element 211 can be sleeved with a second heat preservation jacket 212. The second electric heating element 211 can ensure more uniform heating of the first raw material inside, and the second heat preservation jacket 212 can prevent heat loss and prevent the operator from being scalded when touching;

[0059] The outer periphery of the first raw material container 21 can also be provided with a temperature sensor 26, and the temperature sensor 26 can also be connected to an electric heating controller 27 to control the temperature of the second electric heating element 211 according to the temperature detected by the temperature sensor 26. With this structure, a basically constant temperature effect can be achieved. That is, when the temperature drops using electric heating preservation, the temperature sensor 26 will transmit relevant information to the electric heating controller 27, and the electric heating controller 27 can control the second electric heating element 211 to heat until the specified temperature is reached and the heating stops. It can be seen that this can achieve constant temperature heating in unattended operation, which is more convenient. The first raw material container 21 can be used to hold MDI raw material, and the melting point of MDI is 36-39℃. When the material is MDI, the heating temperature is set to 40℃ to ensure that the MDI is in a colorless and transparent liquid state when the material is added. Of course, it can also be applied to other different melting point isocyanates. According to the melting point, the appropriate heating temperature can be set to ensure that the material is added in a liquid state.

[0060] Further, the third gas inlet pipeline 241 can be further provided with a pressure gauge 242, a pressure reducing valve 243 and a flow meter 244. In this case, the gas pressure can be detected by the pressure gauge 242, the gas outlet pressure can be adjusted by the pressure reducing valve 243, and the gas flow can be measured by the flow meter 244, so that the gas inlet can be more effectively controlled. In addition, the cover 22 of the first raw material container 21 can be further provided with a second transparent feeding window 29, so that the operator can observe the raw material level and other conditions in the first raw material container through the window, so as to avoid overfeeding or underfeeding, and can observe the state of the material through the window to preliminarily judge whether the material is qualified. For example, MDI is colorless and transparent in the molten state, and if it is deteriorated, the color will become white, or there will be white particles inside.

[0061] In a preferred embodiment of the above-mentioned material preparation system, with reference to Figure 4 , Figure 4 The second raw material storage device 3 provided by the utility model can specifically include:

[0062] A second raw material container 31 for containing a second raw material, for example, a polyether, that is, a polyether polyol, which can be used for preparing a polyurethane adhesive, and an isocyanate end-capped by the isocyanate synthesized by the isocyanate (MDI is adopted in the scheme) can be used for subsequent synthesis of the adhesive;

[0063] A high-viscosity pump 33 in communication with the second raw material container 31 through a second raw material outlet valve 32, and the other end of the high-viscosity pump 33 is used for connecting to the second raw material inlet 12 of the reaction device 1.

[0064] In another preferred embodiment of the above-mentioned material preparation system, with reference to Figure 5 , Figure 5 The product storage device 4 provided by the utility model can specifically include:

[0065] A product container 46, and a cover plate 42 with a sixth through hole 421 and a seventh through hole 422, and it should be noted that the cover plate 42 can be connected to the product container 46 in airtight manner by threads to avoid gas leakage;

[0066] The product feed pipe 43 has its first end connected to the product outlet 13 of the reaction device 1, and its second end passes through the sixth through hole 421 and enters the internal space of the product container 46. This allows the product in the reaction device 1 to be fed into the product container 46 for temporary storage. In addition, the product feed pipe 43 can also be equipped with a product feed valve 431. When product needs to be fed, the product feed valve 431 is opened, and after feeding is completed, the product feed valve 431 can be closed to prevent leakage. This product feed valve 431 is preferably an electric valve to achieve automated control of opening and closing and reduce operating costs. Of course, other types of valves can be selected according to actual needs, which is not limited here.

[0067] The third inert gas container 44, in which such... Figure 5 The container shown contains nitrogen, but argon or helium can also be selected as needed; there are no restrictions here. The inert gas can be introduced into the product container 46 through the seventh through hole 422 via the fourth inlet pipe 45 to expel the product. The fourth inlet pipe 45 can be equipped with a fourth inlet pipe valve 451 to control its opening and closing. When the product needs to be transported out, the fourth inlet pipe valve 451 is opened, and after the product is transported out, the fourth inlet pipe valve 451 is closed. The valve can preferably be an electric valve to achieve automated control and reduce operating costs. Of course, other ordinary valves can also be selected as needed; there are no restrictions here.

[0068] The discharge port 41 is located on the side of the product container 46 near the bottom, which can largely prevent product residue in the product container 46. Of course, its position can be adjusted according to actual needs, which is not limited here. The discharge port 41 can also be opened or closed by a valve. The valve is preferably an electric valve to improve the automation control capability. When it is necessary to discharge the product from the product container 46, the valve is opened; otherwise, the valve is closed.

[0069] In summary, by using the above material preparation system, after isocyanate raw material, polyether raw material and the like are added into respective storage devices, when reaction is needed, raw materials are added into the reaction container according to actual conditions, the product after reaction is pressed out by inert gas and enters into the product container, can be stored for a long time, and is discharged from the bottom when needed. The material preparation system integrates raw material storage devices (for example, polyether, isocyanate can be added respectively), a reaction device and a product container, wherein, the isocyanate storage container can be provided with an electric heating part, for the solid-state material such as MDI at normal temperature, which needs to be changed into liquid state during reaction, can be directly heated and melted in the storage container, and then is pressed into the reaction device by inert gas for reaction, the whole conveying and reaction process is completely sealed, so that the introduction of external air to cause deterioration of the material can be avoided, and the use is more convenient and fast.

[0070] The overall structure of the above system is shown in Figure 6 Figure 6 The overall connection diagram of the material preparation system provided by the utility model is shown, it can be seen that the connecting pipeline between the first raw material storage device and the reaction container can be opened and closed by the first valve 61, the connecting pipeline between the second raw material storage device and the reaction container can be opened and closed by the second valve 62, and other components have been described above, and will not be described here again. Taking polyurethane reaction as an example, the use mode of the above system can be as follows:

[0071] ①The detection device is airtight, the reaction device can be pressurized, and the valve at the product outlet at the lower end is opened to release pressure after the airtightness is ensured to be good by using soapy water detection;

[0072] ②The valve of the second raw material container 31 is opened, and the second raw material (such as polyether) in the second raw material container 31 is pumped into the reaction container by the high-viscosity pump 33;

[0073] ③According to the reaction material requirement, the heating temperature is set, and the stirring paddle is opened to start stirring after the reaction material is observed to be melted through the top transparent feeding window (if the reaction material is liquid polyether polyol, the temperature is directly set to 120℃ for water removal, and the stirring paddle is directly opened);

[0074] ④The vacuum pump is opened, and after the vacuum degree is reduced to-0.09MPa, the valve at the bottom is opened, and the inert gas (such as nitrogen) is slowly filled from the bottom to carry out the water in the raw material;

[0075] ⑤After about 30min of water removal, the water content is tested, and when the water content is ≤100ppm, it is determined to be qualified, and the temperature is set to 100℃;

[0076] ​⑥When the temperature is reduced to 100℃, open the inert gas cylinder switch of the first raw material (such as MDI) container, adjust the pressure reducing valve, set the appropriate pressure, open the corresponding feed valve of the reaction device, press the MDI into the reaction device, then close the corresponding feed valve, and make the reaction in a vacuum environment;

[0077] ⑦After 20 minutes of reaction, set the temperature to 120℃, and continue the reaction for 2h;

[0078] ⑧After the reaction is completed, close the vacuum pump valve, then close the vacuum pump, open the inert gas valve, charge the reaction device, charge to normal pressure, open the bottom discharge valve for discharge, and discharge the material into the product container;

[0079] ⑨After the discharge is completed, close the inert gas valve, add a cleaning solvent into the reaction container, and clean the reaction container.

[0080] The above description of disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will accord with the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A material preparation system, characterized by, The application relates to a reaction device and a reaction system comprising the reaction device. The reaction device comprises: a reaction container with a stirring component, a product outlet on the side, and a top cover with a first through hole and a second through hole; a vacuum component which enters the internal space of the reaction container through the first through hole via a vacuum pipeline; a first inert gas container which enters the internal space of the reaction container through the second through hole via a first gas pipeline, and uses the pressure of the inert gas to press the product out of the product outlet.

2. The material preparation system of claim 1, wherein, The bottom of the reaction container is further provided with a third through hole, and the inert gas container further enters the internal space of the reaction container through the third through hole via a second gas pipeline, so as to enhance the water removal efficiency of the internal space. The outer periphery of the reaction container is provided with a first electric heating component, and the outer periphery of the first electric heating component is sleeved with a first heat preservation jacket. The outer periphery of the reaction container is further provided with an electric heating switch which is electrically connected with the first electric heating component. The first raw material storage device comprises:

3. The material preparation system of claim 2, wherein, a first raw material container which is provided with a cover body with a fourth through hole and a fifth through hole, and a first raw material outlet; 4. The material preparation system of claim 3, wherein, a second inert gas container which enters the internal space of the first raw material container through the fourth through hole via a third gas pipeline; 5. The material preparation system of claim 4, wherein, a pressure relief valve which is installed at the position of the fifth through hole.

6. The material preparation system of claim 1, wherein, The outer periphery of the first raw material container is provided with a second electric heating component, and the outer periphery of the second electric heating component is sleeved with a second heat preservation jacket. The outer periphery of the first raw material container is further provided with a temperature sensor which is further connected to an electric heating controller, so as to control the temperature of the second electric heating component according to the temperature detected by the temperature sensor. The third gas pipeline is further provided with a pressure gauge, a pressure relief valve and a flow meter. The second raw material storage device comprises:

7. The material preparation system of claim 6, wherein, a second raw material container; a high viscosity pump which is connected to the second raw material container via a second raw material discharge valve, and the other end of the high viscosity pump is used for connecting to the second raw material inlet.

8. The material preparation system of claim 7, wherein, The product storage device comprises:

9. The material preparation system of claim 1, wherein, a product container which is provided with a cover plate with a sixth through hole and a seventh through hole; a product feeding pipeline which is connected to the product outlet of the reaction device at the first end, and enters the internal space of the product container through the sixth through hole at the second end, and is further provided with a product feeding valve; a third inert gas container which enters the internal space of the product container through the seventh through hole via a fourth gas pipeline; 10. The material preparation system of claim 1, wherein, The discharge port is located at the side of the product container close to the bottom. ​ ​ ​ ​

Images