High-pressure reaction kettle for double-component foaming agent

Abstract

The high-pressure reaction kettle comprises a kettle body, and a first flange is arranged at the top end of the kettle body; a second flange is arranged at the top end of the kettle cover, and the first flange and the second flange are hermetically connected to form a reaction cavity; the first material tank and the second material tank are arranged in the reaction cavity in a mutually isolated manner and are used for independently storing a first material and a second material before reaction; the material feeding assembly is arranged in the reaction cavity and is used for enabling a second material to flow into the first material groove after being triggered; and the stirring assembly is arranged in the reaction cavity and is used for stirring the mixed materials. Zero-leakage long-period stable operation under the high pressure of 10-25 MPa is achieved, the experiment safety and the data reliability are improved, and the maintenance frequency of the sealing element is remarkably reduced.

Description

Technical Field

[0001] This invention relates to the field of chemical equipment technology, and in particular to a two-component foaming agent high-pressure reactor. Background Technology

[0002] Two-component foamed materials (such as polyurethane, epoxy resin, and silicone rubber) are widely used in building insulation, cold chain transportation, and precision instrument packaging due to their excellent thermal insulation, cushioning, and sound insulation properties. These materials typically consist of two main components: a polyol / isocyanate and a resin / curing agent. They require instantaneous mixing and rapid foaming reactions in a high-pressure, closed environment to form a uniform and fine cell structure. While industrial-grade high-pressure reaction equipment is mature, its design for large-scale production limits it, including large feed volumes, narrow parameter adjustment ranges, and long cleaning cycles. This makes it difficult to meet the needs of small-dose formulation screening, reaction kinetic studies, and rapid iteration of process parameters in laboratory settings. Therefore, developing miniaturized, high-precision, and highly reliable high-pressure reaction devices for laboratory use has become a key common technological requirement in the field of foamed material research and development.

[0003] Existing small-scale experimental high-pressure reaction devices for two-component foaming agents generally adopt a split functional architecture. A typical structure is shown in the "Multifunctional Foamer for Laboratory Use" disclosed in Chinese Utility Model Patent No. CN206508925U. According to the specification and drawings, this device includes a pressure-resistant reactor body, a reactor lid, a feed inlet on the lid, a stirring motor, and a stirring paddle. The feed inlet is connected to an external metering pump via a pipe, the stirring motor is connected to the flange of the reactor lid, and the stirring shaft uses a mechanical seal. After the two sets of materials are heated and pressurized outside the reactor, they are injected into the reactor by opening a manual valve through the external metering pump. After the injection is completed, the stirring motor is started to mix them. In this scheme, the feeding action and stirring start rely on manual step-by-step operation, resulting in a delay in response time. Another Utility Model Patent No. CN205517768U discloses a "Reaction Vessel with Liftable Temperature Controlled Heating Mode," which, according to the specification and drawings, has a piston rod and stirring shaft each equipped with a sealing device. The timing of the feeding and stirring actions is set by a controller. The above-mentioned technical solutions all rely on the physical connection and signal interaction between the external actuator and the main body of the reactor. In the context of small-batch, high-frequency use in the laboratory, a specific technical evolution path has been formed.

[0004] In the process of realizing this invention, the inventors discovered at least the following problems in the prior art: First, the reliability of external feed seals is low, and the risk of leakage is prominent under high-pressure conditions. In pipeline material transport, existing technologies use rotary shaft seals or reciprocating piston seals connected to the reactor (such as stuffing box seals, mechanical seals, or O-ring seals). Under the combined effects of 10-25MPa high pressure, 50-150℃ temperature, and highly corrosive media such as isocyanates, the sealing interface must withstand significant pressure gradients and frictional losses, leading to an exponential decrease in seal reliability. Each feed port is an independent leakage risk point; the failure probability of multiple concurrent seals is far higher than that of a single static seal structure. Even minor leaks not only cause rapid pressure decay and distortion of reaction kinetic data, but also pose safety hazards and environmental risks due to the leakage of toxic materials. Furthermore, maintaining sealing performance requires frequent replacement of seals and calibration of the sealing preload, significantly increasing the complexity of equipment commissioning and maintenance, as well as operating costs.

[0005] Secondly, the timing of feeding and stirring startup is difficult to coordinate precisely, making it impossible to pinpoint the reaction initiation point. The split-type architecture relies on electrical signals or manual operation to achieve "feed first, then stir" timing control. The response delay of the external pump valve (approximately 0.5-2 seconds), the starting inertia of the stirring motor, and signal transmission lag result in a non-negligible deviation between the actual mixing start time and the theoretically set time. For rapid processes like foaming reactions, which are completed within seconds, this timing deviation directly causes the reaction kinetic curve to drift, distorts the induction period data, and consequently affects the evaluation of catalyst activity and the accurate determination of the foaming window, leading to poor experimental repeatability.

[0006] Third, the material dispersion is insufficient and the microstructure is inconsistent. Under external feeding mode, the material enters the vessel via concentrated jet or single-point injection, resulting in an extremely uneven initial concentration field. The stirring system needs to gradually homogenize the material through macroscopic convection after the impeller is started, but the stirring Reynolds number of small reactors is low (Re<1000), making it difficult to eliminate mixing dead zones. Especially in small volumes of 50-200mL, the proportion of material adhering to the wall is as high as 8-15%. This leads to a standard deviation of more than 30% in the bubble diameter, a significant density gradient between the core and the surface, and makes it impossible to obtain representative material performance test samples.

[0007] Fourthly, the equipment has a complex structure, resulting in both high manufacturing costs and high barriers to entry. To achieve high-pressure feeding and independent mixing, the existing device requires a high-pressure precision metering pump, a servo stirring motor, multiple valves, and complex sealing components, leading to high overall manufacturing costs. Furthermore, the coordinated debugging of multiple components demands high levels of professional skill from operators, parameter settings are cumbersome, and cleaning requires disassembly of each component. The preparation time for a single experiment exceeds 90 minutes, making it unsuitable for the current efficient and flexible research and development pace of laboratories. Summary of the Invention

[0008] The present invention aims to at least partially solve one of the technical problems in the related art.

[0009] Therefore, the purpose of this invention is to provide a two-component foaming agent high-pressure reactor that eliminates external dynamic sealing, realizes mechanical linkage between feeding and stirring actions, and reduces manufacturing costs.

[0010] To achieve the above objectives, the present invention provides a two-component foaming agent high-pressure reactor, comprising: The vessel body, wherein a first flange is provided at the top of the vessel body; The vessel lid has a second flange at its top, and the first flange and the second flange are sealed together to form a reaction chamber. The first material tank and the second material tank are isolated from each other in the reaction chamber and are used to independently store the first material and the second material before the reaction. A material dispensing component, located inside the reaction chamber, is used to flow the second material into the first material tank after being triggered; A stirring assembly, located inside the reaction chamber, is used to stir the mixed materials.

[0011] According to one embodiment of the present invention, it further includes a sealing gasket and a plurality of quick-opening locking mechanisms; the sealing gasket is disposed between the first flange and the second flange; the edge of the vessel cover is provided with a plurality of notches, one end of the quick-opening locking mechanism is hinged to the side wall of the vessel body, and the other end of the quick-opening locking mechanism extends into the notch to lock and seal the vessel body and the vessel cover.

[0012] According to one embodiment of the present invention, the device further includes a pneumatic pressure regulating valve and a quick-connect gas pipe on the vessel lid; the quick-connect gas pipe is used to quickly connect or disconnect with an external compressed gas source; the inlet end of the pneumatic pressure regulating valve is connected to the quick-connect gas pipe, and the outlet end is connected to the reaction chamber; the pneumatic pressure regulating valve is used to adjust the pressure of the external high-pressure gas source to a set value and then input it into the reaction chamber.

[0013] According to one embodiment of the present invention, the device further includes a safety valve and an airtight aviation connector disposed on the vessel lid; the inlet of the safety valve is connected to the reaction chamber, and the opening pressure of the safety valve is set to 1.05 to 1.1 times the maximum working pressure of the reaction chamber, for automatically releasing gas in the chamber when overpressure occurs; the airtight aviation connector is used to realize the electrical connection between the internal sensor and the external control system while maintaining the airtightness of the reaction chamber.

[0014] According to one embodiment of the present invention, a silencer is further included, and an exhaust port is provided on the vessel lid; the silencer is installed at the exhaust port to reduce the noise generated by gas emissions during or after the reaction.

[0015] According to one embodiment of the present invention, the assembly further includes a retainer and a bracket disposed within the reaction chamber, the bracket being mounted on the top of the support; the stirring assembly includes a motor, a coupling, a stirring rod, and a stirring paddle, the motor being centrally mounted on the retainer, the output shaft of the motor being coaxially connected to the stirring rod via the coupling; the stirring paddle is disposed on the stirring rod and located within the first material tank; the first material tank is fixed to the support, and the second material tank is fixed to the bottom end of the retainer and located above the first material tank.

[0016] According to one embodiment of the present invention, the coupling is a magnetic coupling.

[0017] According to one embodiment of the present invention, the bottom of the second material trough is provided with at least one discharge port, which is directly opposite to the inlet of the first material trough; the card holder is provided with an opening in the outer peripheral area of ​​the motor, which corresponds to the position of the inlet of the second material trough.

[0018] According to one embodiment of the present invention, the material dispensing assembly includes a plug and a guide rope; the plug is detachably and sealedly inserted into the outlet of the second material tank; one end of the guide rope is connected to the plug and the other end is fixedly connected to the stirring rod; when the stirring rod is started and accelerated to a set speed, the guide rope pulls the plug so that the plug is disengaged from the outlet of the second material tank, and the second material is injected into the first material tank.

[0019] According to one embodiment of the present invention, the outlet of the second material tank is a conical hole, and the inner wall of the conical hole is coated with polytetrafluoroethylene.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The two-component foaming agent high-pressure reactor of the present invention, by setting the stirring component and the material feeding component inside the reaction chamber and adopting a static sealing reactor body design, completely avoids the leakage problems of axial reciprocating sealing and rotary shaft seal of the external feeding pump valve in the prior art, realizes zero leakage long-term stable operation under high pressure of 10-25MPa, improves experimental safety and data reliability, and significantly reduces the frequency of sealing component maintenance.

[0021] 2. The material feeding component of the reactor of the present invention adopts a mechanical material release mechanism directly driven by the stirring power, so that the material feeding start and the blade rotation start are rigidly driven by the same power source, compressing the action timing deviation to the mechanical transmission gap level (<10ms), ensuring the accurate calibration of the reaction start time, and providing repeatable induction period data for foaming kinetics research.

[0022] 3. The reactor of this invention eliminates the expensive high-pressure metering pump and complex external valves of the prior art, retaining only a single motor and a statically sealed reactor body, reducing the equipment hardware cost by more than 50%; the integrated design reduces the operation steps by 70%, shortens the preparation time for a single experiment to less than 25 minutes, and eliminates the need to disassemble dynamic seals during cleaning, greatly reducing the threshold for use and maintenance costs.

[0023] 4. When using the reactor of the present invention, the stirring component and the material feeding component are installed on the support, and after the material is added, the entire reactor is placed inside. This method is more convenient than the installation and use of reactors in the prior art.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein: Figure 1 This is a schematic diagram of the structure of a high-pressure reactor for a two-component foaming agent in one embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the internal structure of a high-pressure reactor containing a two-component foaming agent in one embodiment of the present invention.

[0027] Figure 3 This is another structural schematic diagram of the interior of the high-pressure reactor for the two-component foaming agent in one embodiment of the present invention.

[0028] Figure 4 This is another structural schematic diagram of the interior of the high-pressure reactor containing the two-component foaming agent in one embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures: 1-Bottle body, 2-Bottle lid, 3-Quick-opening locking mechanism, 4-Pneumatic pressure regulating valve, 5-Quick air hose connector, 6-Safety valve, 7-Airtight aviation plug, 8-Silencer, 9-Motor, 10-Card holder, 11-Second material tank, 12-Coupling, 13-Bracket, 14-First material tank, 15-Stirring rod, 16-Plug, 17-Guide rope, 19-Support block, 20-Stirring paddle, 201-Notch. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0031] The following is for reference. Figures 1 to 4 This describes a high-pressure reactor for a two-component foaming agent according to an embodiment of the present invention.

[0032] The high-pressure reactor for a two-component foaming agent according to an embodiment of the present invention includes a reactor body 1, a reactor lid 2, a first material tank 14, a second material tank 11, a material feeding assembly, and a stirring assembly. In this embodiment, high pressure refers to 10 MPa to 25 MPa.

[0033] The reactor body 1 has a first flange at its top. The reactor body 1 is a vertical cylindrical pressure vessel. The reactor cover 2 has a second flange at its top, and the first and second flanges are sealed together to form a reaction chamber. A sealing gasket is provided between the first and second flanges to achieve a static seal. The first and second flanges can be detachably connected using multiple bolts. All bolts are evenly arranged circumferentially around the reactor body 1, uniformly transmitting pressure to the sealing gasket. This ensures sufficient rigidity and strength at the connection points under high-pressure conditions, preventing seal failure due to stress concentration. This fundamentally guarantees the long-term stable operation and maintainability of the reactor, improves experimental safety and data reliability, and significantly reduces the frequency of seal maintenance.

[0034] The first material tank 14 and the second material tank 11 are isolated from each other within the reaction chamber and are used to independently store the first and second materials before the reaction. The specific composition of the first and second materials is determined according to actual needs and is not limited thereto. For example, the first material may be a polyisocyanate, and the second material may be a composition containing a polyol, a foaming agent, and a catalyst. The arrangement of the first material tank 14 and the second material tank 11 within the reaction chamber is determined according to actual needs and is not limited thereto. The first material tank 14 and the second material tank 11 can be fixed within the reaction chamber by bolts, adhesive bonding, or other methods.

[0035] The material dispensing component is located inside the reaction chamber and is used to flow the second material into the first material tank 14 after being triggered. The specific type of the material dispensing component is set according to actual needs. For example, the material dispensing component can take the form of an electric push rod, a pull rope, or a flap.

[0036] The stirring assembly is located inside the reaction chamber and is used to stir the mixed materials. The stirring assembly generates a forced vortex by rotating to rapidly mix the first and second materials.

[0037] The two-component foaming agent high-pressure reactor according to an embodiment of the present invention, by placing the stirring assembly and the material feeding assembly inside the reaction chamber and adopting a statically sealed reactor body design, completely avoids the leakage problems of axial reciprocating sealing and rotary shaft seal of the external feeding pump valve in the prior art, achieves zero-leakage long-term stable operation under high pressure of 10-25MPa, improves experimental safety and data reliability, and significantly reduces the frequency of seal maintenance.

[0038] In some embodiments, such as Figure 1 As shown, the two-component foaming agent high-pressure reactor also includes multiple quick-opening locking mechanisms 3. The edge of the reactor lid 2 has multiple notches 201. One end of each quick-opening locking mechanism 3 is hinged to the side wall of the reactor body 1, and the other end extends into the notch 201 to lock and seal the reactor body 1 and the reactor lid 2. The number of quick-opening locking mechanisms 3 is selected according to actual needs; for example, there are three quick-opening locking mechanisms 3. The quick-opening locking mechanisms 3 enable rapid assembly and disassembly of the reactor body 1 and the reactor lid 2, meeting the needs of frequent material changes and cleaning in experiments.

[0039] In some embodiments, such as Figure 1 As shown, the two-component foaming agent high-pressure reactor also includes a pneumatic pressure regulating valve 4 and a quick-connect gas pipe 5 mounted on the reactor lid 2. The quick-connect gas pipe 5 is used for quick connection or disconnection with an external compressed air source. The quick-connect gas pipe 5 employs a self-sealing locking structure, enabling rapid connection and disconnection of the gas path without tools, significantly reducing the time required for disassembling and assembling pneumatic pipelines during experimental preparation and completion (each operation takes only 2-3 seconds). Its built-in one-way valve automatically cuts off the gas path upon disconnection, preventing compressed air leakage or foreign matter entry, ensuring the cleanliness and reliability of the pneumatic system, and improving the overall operating efficiency and ease of use of the reactor. The inlet end of the pneumatic pressure regulating valve 4 connects to the quick-connect gas pipe 5, and the outlet end connects to the reaction chamber. The pneumatic pressure regulating valve 4 is used to adjust the pressure of the external high-pressure gas source to a set value before inputting it into the reaction chamber. As the core component of pressure control, the pneumatic pressure regulating valve 4 can remotely and precisely adjust the reaction pressure inside the reactor by driving the diaphragm structure with compressed air. This eliminates the need for close-range manual operation, improving operational safety and enabling automated closed-loop control of pressure parameters. Its fast response speed and high adjustment accuracy reduce the reaction pressure fluctuation range to within ±0.1MPa, providing a stable kinetic environment for the foaming reaction and thus improving the uniformity of the product's cell structure.

[0040] like Figure 1As shown, the two-component foaming agent high-pressure reactor also includes a safety valve 6 and an airtight aviation connector 7 mounted on the reactor lid 2. The inlet of the safety valve 6 connects to the reaction chamber. The opening pressure of the safety valve 6 is set to 1.05 to 1.1 times the maximum working pressure of the reaction chamber, used to automatically release gas from the chamber in case of overpressure. As a key component for overpressure protection, the safety valve 6 has an internal spring. Through a precisely set elastic stiffness, the safety valve opens instantaneously when the pressure inside the reactor reaches the opening pressure, rapidly releasing high-pressure gas to a safe area. This prevents reactor rupture or explosion accidents caused by uncontrolled reaction. Its rapid response characteristics (opening time < 0.1 seconds) provide intrinsic safety for experimental personnel and equipment. Simultaneously, the spring's resettable design allows the valve to automatically close after pressure release, facilitating rapid restoration of experimental conditions. The airtight aviation connector 7 is used to achieve electrical connection between sensors and external control systems while maintaining the airtightness of the reaction chamber. The hermetic aviation connector 7 is designed specifically for electrical signal transmission in sealed containers. It uses glass sintering or ceramic sealing technology to fuse the conductor leads to the metal housing, achieving a hermeticity rating of 10⁻. 9 The electrical path of Pa•m³ / s ensures the stable transmission of weak signals from temperature and pressure sensors to the external control system, while completely isolating the path of high-pressure gas leakage along the cable gaps inside the reactor. It achieves the dual functions of electrical connection and high-pressure sealing, and is an indispensable interface component for automated monitoring and data acquisition of the reactor.

[0041] Continue to refer to Figure 1 The two-component foaming agent high-pressure reactor also includes a silencer 8, with an exhaust port on the reactor lid 2. The silencer 8 is installed at the outlet end of the exhaust port to reduce noise generated by gas emissions during or after the reaction. The silencer 8 reduces noise generated by high-speed airflow by 15-25 decibels through porous sound-absorbing material and an expansion cavity structure, significantly improving the acoustic environment of the laboratory and protecting the hearing health of operators. Simultaneously, its buffering effect on airflow pulses stabilizes pressure fluctuations in the pneumatic system, preventing valves from vibrating and wearing due to airflow impact, indirectly extending the service life of pneumatic components, and making the entire system operate more smoothly and reliably.

[0042] In some specific embodiments, combined with Figures 1 to 4 As shown, the two-component foaming agent high-pressure reactor also includes a retainer 10 and a support 13 disposed within the reaction chamber, with the retainer 10 mounted on the top of the support 13. The support 13 includes a base and multiple vertically mounted support rods on the base. The retainer 10 is mounted on the top of the support rods.

[0043] The stirring assembly includes a motor 9, a coupling 12, a stirring rod 15, and a stirring paddle 20. The motor 9 is centrally mounted on the mounting base 10, and its output shaft is coaxially connected to the stirring rod 15 via the coupling 12. The stirring paddle 20 is mounted on the stirring rod 15 and located within the first material tank 14. The first material tank 14 is fixed to a bracket 13, and a second material tank 11 is fixed to the bottom of the mounting base 10 and located above the first material tank 14. In one example, the first material tank 14 is a beaker, glued to the base. The second material tank 11 has a through hole in its center, allowing the output shaft of the motor 9 and the coupling 12 to pass through. The second material tank is fixed to the lower surface of the mounting base 10 with hot melt adhesive. In one example, multiple support blocks 19 are also fixedly connected to the base for positioning the first material tank 14.

[0044] Combination Figure 2 and Figure 3 As shown, the longitudinal section of the second material tank 11 is a trapezoid, wider at the top and narrower at the bottom. The bottom of the second material tank 11 has at least one discharge port, which is directly opposite the inlet of the first material tank 14. The second material tank 11 allows the second material to be added independently and stored separately before the experiment, creating a prerequisite for subsequent synchronous mixing. The card holder 10 has an opening in the outer peripheral area of ​​the motor 9, corresponding to the position of the inlet of the second material tank 11. In one example, the discharge port of the second material tank 11 is a conical hole, and the inner wall of the conical hole is coated with polytetrafluoroethylene (PTFE) to reduce material adhesion.

[0045] In one example, coupling 12 is a magnetic coupling. The magnetic coupling has an isolated outer magnetic rotor and an inner magnetic rotor. The output shaft of motor 9 is coaxially connected to the outer magnetic rotor. The outer magnetic rotor and the inner magnetic rotor are separated by a non-magnetic stainless steel isolation sleeve, and synchronous magnetic coupling using coaxial permanent magnets is employed. The stirring rod 15 is a solid stainless steel rod, with its upper end firmly connected to the inner magnetic rotor and its lower end extending to the bottom of the vessel 1 and equipped with a stirring paddle 20. This magnetic coupling transmission structure transmits power to the stirring rod 15 without contact, thereby transforming the traditional rotary shaft seal into a static seal, significantly reducing the sealing difficulty and wear leakage probability under high-pressure conditions. Furthermore, the forced eddy current generated during its rotation enables rapid dispersion of the material in the second material tank 11 and rapid mixing with the material in the first material tank 14.

[0046] Combination Figure 2 and Figure 3 As shown, in some embodiments, the material dispensing assembly includes a plug 16 and a guide rope 17. The plug 16 is detachably and sealingly inserted into the outlet of the second material tank 11. One end of the guide rope 17 is connected to the plug 16, and the other end is fixedly connected to the stirring rod 15. When the stirring rod 15 starts and accelerates to a set speed, the guide rope 17 pulls the plug 16, causing the plug 16 to disengage from the outlet of the second material tank 11, and the second material is injected into the first material tank 14.

[0047] Specifically, the plug body 16 is made of polytetrafluoroethylene or ultra-high molecular weight polyethylene. Its outer conical surface matches the taper of the inner conical surface of the conical hole, and the diameter of its large end is slightly larger than the diameter of the conical hole to form an interference fit. An annular groove is opened in the middle of the plug body 16, and an oil-resistant fluororubber O-ring is embedded inside as a flexible sealing sleeve. When the plug body 16 is pressed into the conical hole, the O-ring is compressed to 60%-70% of its original thickness, thereby achieving a 10MPa high-pressure seal. A stainless steel insert with radial through holes is pre-embedded inside the plug body 16 to secure the traction rope and prevent the plug body 16 from tearing under tension.

[0048] One end of the guide rope 17 is secured to the radial through hole of the pre-embedded insert in the plug body, and the other end is fixed to the stirring rod 15 with tape. When the stirring rod 15 is stationary, the plug body 16 is placed in the conical hole of the second material tank 11, completing the sealing of the second material tank 11; when the stirring rod 15 accelerates to the set speed, the guide rope 17 pulls the plug body 16, and the plug body 16 is pulled out of the conical hole within 50-200 milliseconds, allowing the second component to be injected into the first material tank 14. This mechanism does not require external electrical control signals, and the trigger response is synchronized with the stirring flow field, ensuring the accuracy of the mixing start time.

[0049] The working principle and operation procedure of the two-component foaming agent high-pressure reactor according to an embodiment of the present invention are as follows: Before the experiment begins, the first material is injected into the first material tank 14 under normal pressure, and the second material is precisely metered into the second material tank 11; after connecting the guide rope 17 to the plug body 16, the plug body 16 is manually tightened to ensure a seal. After sealing the reactor lid 2, the reactor is pressurized to the set reaction pressure by an air pump. Then, the motor 9 is started, the stirring rod 15 rotates and drives the guide rope 17. Under the combined action of material pressure and tension, the guide rope 17 quickly pulls out the plug body 16, and the second material enters the first material tank 14 within 0.1-0.3 seconds; at the same time, the stirring rod 15 has formed a stable flow field, instantly shearing and dispersing the second material. The mixing start time is accurately recorded by a pressure sensor, and the reaction process continues under constant pressure, temperature and stirring conditions until the reaction ends. After the reaction is completed, the system is depressurized, the stirring stops, and preparation is made for the next experiment.

[0050] By mechanically coupling the material feeding component and the stirring component through the above technical solution, the external dynamic sealing link of the traditional small high-pressure reaction device is completely eliminated, and the mixing start-up time is precisely controllable (error < 0.2 seconds). The material dispersion efficiency is improved by more than 50%, the equipment cost is reduced by 40%-60%, the minimum feed amount for a single experiment can be reduced to less than 100mL, and the material waste rate is less than 5%, which fully meets the laboratory's high-frequency, micro-quantity, and high-precision research and development needs.

[0051] It should be noted that in the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0052] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] In the description of this invention, the terms "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0054] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A high-pressure reactor for a two-component foaming agent, characterized in that, include: The vessel body (1) has a first flange at its top; The lid (2) has a second flange at its top, and the first flange and the second flange are sealed together to form a reaction chamber; The first material tank (14) and the second material tank (11) are disposed in the reaction chamber in a way that isolates them from each other, and are used to independently store the first material and the second material before the reaction. A material dispensing component is provided inside the reaction chamber and is used to flow the second material into the first material tank (14) after being triggered; A stirring assembly, located inside the reaction chamber, is used to stir the mixed materials.

2. The high-pressure reactor for a two-component foaming agent according to claim 1, characterized in that, It also includes a sealing gasket and multiple quick-opening locking mechanisms (3); the sealing gasket is located between the first flange and the second flange; the edge of the vessel cover (2) is provided with multiple notches (201), one end of the quick-opening locking mechanism (3) is hinged to the side wall of the vessel body (1), and the other end of the quick-opening locking mechanism (3) extends into the notch (201) to lock and seal the vessel body (1) and the vessel cover (2).

3. The high-pressure reactor for a two-component foaming agent according to claim 1, characterized in that, It also includes a pneumatic pressure regulating valve (4) and a quick-connect pipe (5) provided on the lid (2); the quick-connect pipe (5) is used to quickly connect or disconnect with an external compressed air source; the inlet end of the pneumatic pressure regulating valve (4) is connected to the quick-connect pipe (5), and the outlet end is connected to the reaction chamber; the pneumatic pressure regulating valve (4) is used to adjust the pressure of the external high-pressure air source to a set value and then input it into the reaction chamber.

4. The high-pressure reactor for a two-component foaming agent according to claim 3, characterized in that, It also includes a safety valve (6) and an airtight aviation connector (7) installed on the lid (2); the inlet of the safety valve (6) is connected to the reaction chamber, and the opening pressure of the safety valve (6) is set to 1.05 to 1.1 times the maximum working pressure of the reaction chamber, which is used to automatically release the gas in the chamber when the pressure is over-pressurized; the airtight aviation connector (7) is used to realize the electrical connection between the internal sensor and the external control system while maintaining the airtightness of the reaction chamber.

5. The high-pressure reactor for a two-component foaming agent according to claim 4, characterized in that, It also includes a silencer (8), and the vessel cover (2) is provided with an exhaust port; the silencer (8) is installed at the exhaust port to reduce the noise generated by gas emission during or after the reaction.

6. The high-pressure reactor for a two-component foaming agent according to claim 1, characterized in that, It also includes a retainer (10) and a bracket (13) disposed in the reaction chamber, wherein the retainer (10) is mounted on the top of the bracket (13); the stirring assembly includes a motor (9), a coupling (12), a stirring rod (15) and a stirring paddle (20), wherein the motor (9) is centrally mounted on the retainer (10), and the output shaft of the motor (9) is coaxially connected to the stirring rod (15) through the coupling (12); the stirring paddle (20) is disposed on the stirring rod (15) and located in the first material tank (14); the first material tank (14) is fixed on the bracket (13), and the second material tank (11) is fixed at the bottom of the retainer (10) and located above the first material tank (14).

7. The high-pressure reactor for a two-component foaming agent according to claim 6, characterized in that, The coupling (12) is a magnetic coupling.

8. The high-pressure reactor for a two-component foaming agent according to claim 6, characterized in that, The bottom of the second material tank (11) is provided with at least one discharge port, which is directly opposite to the inlet of the first material tank (14); the card holder (10) is provided with an opening in the outer peripheral area of ​​the motor (9), which corresponds to the position of the inlet of the second material tank (11).

9. The high-pressure reactor for a two-component foaming agent according to claim 8, characterized in that, The material dispensing assembly includes a plug (16) and a guide rope (17); the plug (16) is detachably and sealed to the outlet of the second material tank (11); one end of the guide rope (17) is connected to the plug (16), and the other end is fixedly connected to the stirring rod (15); when the stirring rod (15) starts and accelerates to the set speed, the guide rope (17) pulls the plug (16) to disengage the plug (16) from the outlet of the second material tank (11), and the second material is injected into the first material tank (14).

10. The high-pressure reactor for a two-component foaming agent according to claim 9, characterized in that, The discharge port of the second material tank (11) is a conical hole, and the inner wall of the conical hole is coated with polytetrafluoroethylene.

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