Reaction device capable of rapidly heating, cooling and maintaining temperature

Abstract

The utility model relates to a reaction device capable of quickly heating, cooling and maintaining temperature. According to the reaction device, a three-way valve temperature control device consisting of a set of thermal medium circulator, a set of cold medium circulator, a control unit and two temperature control adjusting motor control three-way valve rotating devices is arranged on the reaction kettle, so that the temperature of the reaction kettle of the reaction device can be increased or decreased within half a minute (even shorter time); the problem that the reaction kettle cannot be rapidly heated and cooled in the reaction process is solved; for heat absorption and heat release experiments, the dynamic balance of the temperature can be maintained by setting a fixed reaction temperature; installation is simple, and operation is convenient; the problem of waste of water resources is solved; the temperature control range is wide, and when a water medium is used, the temperature control range is 1-95 DEG C; when a silicone oil medium is used, the temperature control range is-50 to 250 DEG C; the rotatable distillation head is mounted at the upper part of the reaction kettle and is directly rotated during use, so that the functions of condensation reflux and distillation extraction can be simultaneously realized.

Description

Technical Field

[0001] The utility model belongs to the field of reaction devices, and in particular relates to a reaction device capable of rapidly heating, cooling and maintaining the temperature. Background Art

[0002] In current reaction processes, the reactor body only has two ports for connecting to a water bath. To increase the temperature, hot water of a certain temperature is introduced. To cool the reaction, the hot water must be drained from the kettle body and then connected to a cold water source. This heating and cooling process is cumbersome and time-consuming, significantly affecting experimental results. Furthermore, because the reactor body only has two ports for connecting to a water bath, it can only be connected to one heating device or one cooling device, making it impossible to quickly heat or cool the reaction in advance, which greatly affects experimental operations.

[0003] Patent CN206385050U discloses a temperature control system for polyacrylate emulsion polymerization. It mentions a circulating cold water pipe equipped with a circulating pipeline pump, a cold water inlet manifold equipped with an inlet control valve, and a temperature probe installed in the emulsion polymerization kettle. The system can stabilize the reaction temperature of the materials in the emulsion polymerization kettle within a range of 80°C to 81°C. However, this patent has the following problems: a narrow temperature control range; significant water waste during the circulation process; and complex operation with numerous related instruments, requiring the operation of a circulating pipeline pump, a heat exchanger, an inlet control valve, and a temperature control device.

[0004] In addition, in the current reaction process, the top of the reactor can only be connected to a condenser for reflux, and to remove the single or collect the reflux condensate, it is necessary to install a 75° distillation head and then connect an inverted condenser for distillation extraction. To remove the single or collect the reflux condensate, it is necessary to wait for the reflux device to cool down to room temperature naturally after the reflux reaction is completed, and then disassemble the reflux device, and then build a distillation extraction device, and heat it again for distillation extraction. The whole process is cumbersome to disassemble. This process wastes a lot of time, and in the process of disassembling the reflux device and building the distillation extraction device, volatile substances are easily volatilized, affecting the health of the experimenter.

[0005] Patent CN210965183U discloses an adjustable distillation head, stating that the direction of steam distillation can be adjusted using branch valves and valves on the distillation head body, enabling both condensation reflux and distillation extraction in a single experimental setup. While this patent allows for the adjustment of steam distillation direction using branch valves and valves on the distillation head body, achieving both condensation reflux and distillation extraction in a single experimental setup, it requires two condensation units with reflux condensers, which is costly, complex, and difficult to operate.

[0006] Patent CN214346542U discloses a rotatable distillation head, mentioning that a rotatable inner tube is used to adjust the distillate entering different test devices, ensuring that the temperature displayed on the thermometer is consistent with the distillate switching temperature. This also avoids the mixing of the distillates before and after using the same condenser, thereby improving the purity of each distillate. Although this patent allows the distillate to be adjusted using the inner tube of the rotatable distillation head, it does not enable switching between condensation reflux and distillation extraction.

[0007] Patent CN209564992U discloses an integrated reaction and separation device, stating that: "A device has both reaction and separation functions." Although this patent allows for switching between condensation reflux and distillation extraction via a three-way regulating valve, the structure is complex and difficult to clean. Utility Model Content

[0008] The first technical problem to be solved by the present invention is that the reactor body used in the current chemical reaction processes, such as synthesis, impurity removal, polymerization, alcoholysis and the like, has only two interfaces that can be connected to a water bath device. When the reaction needs to be heated, hot water of a certain temperature is introduced. When the reaction needs to be cooled, the hot water in the reactor body needs to be drained first, and then the two interfaces of the reactor body are connected to a cold water source to achieve cooling. The heating and cooling processes are cumbersome and time-consuming, which greatly affects the experimental results. Moreover, since the reactor body has only two interfaces that can be connected to a water bath device, the reactor body can only be connected to one set of heating devices or one set of cooling devices, resulting in the inability to quickly achieve heating and cooling in advance, which greatly affects the experimental operation. The second problem to be solved by the present invention is The first technical problem is that in the current reaction process, the top of the reactor can only be connected to the condenser for reflux, and for removing the singlet or collecting the reflux condensate, it is necessary to install a 75° distillation head and then connect the inverted condenser for distillation extraction; for removing the singlet or collecting the reflux condensate, it is necessary to wait for the reflux device to cool down to room temperature naturally after the reflux reaction, and then dismantle the reflux device, and then build the distillation extraction device, and heat it up again for distillation extraction. The whole process is cumbersome to disassemble; a lot of time is wasted in this process, and volatile substances are easily volatilized during the process of dismantling the reflux device and building the distillation extraction device, which affects the health of the experimenter. For this reason, the utility model provides a reaction device that can quickly raise and lower the temperature and maintain the temperature.

[0009] In one aspect, the present invention features a three-way valve temperature control device, one end of which connects to the reactor body interlayer, while the other two ports connect to the hot medium and the cold medium, respectively. When the temperature needs to be raised (or when the reaction absorbs heat and the reaction temperature needs to be maintained), a control unit, by setting a specific temperature, controls the rotation of the medium inlet three-way valve via a temperature-controlled medium inlet motor to increase the flow of the hot medium and decrease the flow of the cold medium. When the temperature needs to be lowered (or when the reaction releases heat and the reaction temperature needs to be maintained), the opposite occurs. This allows for rapid temperature increases and decreases, as well as temperature maintenance. Furthermore, a rotatable distillation head enables both condensation reflux and distillation extraction.

[0010] The hot medium circulator can pre-set a fixed temperature for hot medium, which enters the medium inlet three-way valve through the hot medium outlet pipe and then enters the reactor body interlayer through the medium inlet. The hot medium in the reactor body interlayer then flows through the medium outlet into the medium outlet three-way valve and returns to the hot medium circulator. Similarly, the cold medium circulator can pre-set a fixed temperature for cold medium, which enters the medium inlet three-way valve through the cold medium inlet pipe and then enters the reactor body interlayer through the medium inlet. The cold medium in the reactor body interlayer then flows through the medium outlet into the medium outlet three-way valve and returns to the cold medium circulator. A third temperature sensor is installed in the reactor body interlayer, and a first temperature sensor and a second temperature sensor are installed in the hot medium circulator and the cold medium circulator, respectively. The first and second temperature sensors provide temperature feedback to a control unit. The control unit controls the rotation amplitudes of the medium inlet and medium outlet three-way valves, respectively, through the temperature-controlled medium inlet and medium outlet motor devices, to change the flow rate and ratio of the cold and hot medium, thereby achieving rapid temperature changes in the reactor body interlayer.

[0011] The utility model is realized through the following technical solutions:

[0012] The utility model provides a reaction device capable of rapidly heating, cooling and maintaining temperature, which comprises a reactor body, a temperature control medium inlet motor device, a temperature control medium outlet motor device, a hot medium circulator, a cold medium circulator, a medium inlet three-way valve, a medium outlet three-way valve, and a control unit. A reactor body interlayer is provided on the outside of the reactor body, and a medium inlet and a medium outlet are provided at both ends of the reactor body interlayer.

[0013] The hot medium outlet pipe of the hot medium circulator is connected to the first input port of the medium inlet three-way valve, the cold medium outlet pipe of the cold medium circulator is connected to the second input port of the medium inlet three-way valve, and the output port of the medium inlet three-way valve is connected to the medium inlet of the kettle body interlayer.

[0014] The medium outlet of the kettle interlayer is connected to the input port of the medium outlet three-way valve, the first output port of the medium outlet three-way valve is connected to the hot medium inlet pipe of the hot medium circulator, and the second output port of the medium outlet three-way valve is connected to the cold medium inlet pipe of the cold medium circulator.

[0015] The temperature control medium inlet motor device and the temperature control medium outlet motor device are both communicatively connected to the control unit. The control unit controls the operation of the medium inlet three-way valve through the temperature control medium inlet motor device, and controls the operation of the medium outlet three-way valve through the temperature control medium outlet motor device.

[0016] The temperature control medium inlet motor device and the temperature control medium outlet motor device can control the rotation amplitude of the three-way valve, thereby controlling the flow of the hot medium and the cold medium to achieve dynamic temperature control. It can adopt an intelligent motor, which is usually composed of a motor driver, a sensor, a controller and a communication module.

[0017] Furthermore, in the above-mentioned reaction device that can quickly heat up, cool down and maintain temperature, a first temperature sensor for measuring the temperature of the medium inside the heat medium circulator is provided in the heat medium circulator, which is communicatively connected with the control unit, the temperature control medium inlet motor device and the temperature control medium outlet motor device.

[0018] Furthermore, in the above-mentioned reaction device that can quickly heat up, cool down and maintain temperature, a second temperature sensor for measuring the temperature of the medium inside the cold medium circulator is provided in the cold medium circulator, which is communicatively connected with the control unit, the temperature control medium inlet motor device and the temperature control medium outlet motor device.

[0019] Furthermore, the hot medium can be hot water (e.g., water with a temperature of 80°C to 95°C) or hot silicone oil (e.g., silicone oil with a temperature of 100°C to 245°C), and the cold medium can be cold water (e.g., water with a temperature of 5°C to 15°C) or cold silicone oil (e.g., silicone oil with a temperature of -45°C to 50°C). The hot medium and the cold medium are preferably the same medium.

[0020] The medium is not limited to the above substances, and can also be alcohol aqueous solutions (ethylene glycol aqueous solution, propylene glycol aqueous solution, etc.), salt water, alkaline water, organic solvents, steam, air, and some special media: liquid metals (sodium, lead), liquid hydrogen, liquid oxygen, etc.

[0021] Furthermore, in the above-mentioned reaction device that can quickly heat up, cool down and maintain temperature, a third temperature sensor for measuring the temperature of the medium inside the kettle body interlayer is provided in the kettle body interlayer, which is communicatively connected with the control unit, the temperature control medium inlet motor device and the temperature control medium outlet motor device.

[0022] The first temperature sensor transmits the temperature signal inside the hot medium circulator to the control unit, the second temperature sensor transmits the temperature signal inside the cold medium circulator to the control unit, and the third temperature sensor transmits the temperature signal inside the kettle body interlayer to the control unit. The control unit controls the opening of the medium inlet three-way valve and the medium outlet three-way valve through the temperature control medium inlet motor device and the temperature control medium outlet motor device according to the set reaction temperature, quenching reaction temperature (when the reaction is terminated), etc., so as to control the flow rate of the hot medium and the cold medium, and appropriately allocate the ratio of the medium of the medium outlet three-way valve entering the hot medium circulator and entering the cold medium circulator, so as to finally adjust the temperature inside the reactor body to the required temperature.

[0023] Furthermore, in the above-mentioned reaction device that can quickly heat up and cool down and maintain the temperature, a rotatable distillation head is provided on the upper part of the reactor body, and the rotatable distillation head has an upper end interface, a lower end interface and a side interface provided on one side of the upper end interface, the upper end interface and / or the side interface are connected to a reflux condenser, and the lower end interface is connected to the upper part of the reactor body.

[0024] Furthermore, the rotatable distillation head is tilted at a certain angle to the reflux port at the top of the reactor body through the lower end interface. The rotatable distillation head is connected to the reactor body (for example, the top or one side of the upper part of the reactor body), for example, tilted 5° to 10° relative to the longitudinal axis of the reactor.

[0025] Furthermore, in the above-mentioned reaction device capable of rapidly heating, cooling and maintaining temperature, the reflux condenser is one of a spherical reflux condenser, a serpentine reflux condenser and a double-plug reflux condenser.

[0026] Furthermore, in the above-mentioned reaction device capable of rapidly heating, cooling and maintaining temperature, the angle between the side interface and the upper end interface is 80° to 100°.

[0027] Furthermore, in the above-mentioned reaction device capable of rapidly heating, cooling and maintaining temperature, the angle between the side interface and the upper end interface is 90°.

[0028] Furthermore, in the above-mentioned reaction device capable of rapidly heating, cooling and maintaining temperature, the angle between the upper end interface and the lower end interface is 90° to 270°, preferably 180°, under the premise that they do not interfere with each other.

[0029] Furthermore, in the above-mentioned reaction device that can quickly heat up and cool down and maintain the temperature, the lower end interface is an external frosted interface, the upper end interface is an internal frosted interface, and the side interface is an internal frosted interface. When it is necessary to convert the reflux condensation operation to distillation extraction, there is no need to replace or install a new reflux condensation device including a distillation head as in traditional experimental methods. Instead, the condenser tube can be inverted. The rotatable distillation head only needs to be rotated directly, and the condenser tube only needs to be switched between the upper port and the side interface of the distillation head. For example, the upper port of the distillation head is covered with a piston, and the side interface can be connected to a condensation device for distillation extraction; the distillation head is rotated so that the angle of the side interface is higher than the horizontal line and is sealed with a piston, and the upper port can be connected to a condensation device for condensation reflux.

[0030] The heating and cooling principle of the reaction device capable of rapid heating and cooling of the present invention is as follows: before starting the reaction, the hot medium circulator is first set and heated to a fixed temperature, such as 25°C to 250°C, further 80°C to 150°C, further 90°C to 120°C, and then the cold medium circulator is set and cooled to a fixed temperature, such as -50°C to 0°C, further -35°C to 0°C, further -15°C to 0°C. When the reactor needs to be heated to a fixed temperature, the control unit calculates the flow rate of the medium inlet three-way valve connecting the hot medium and the cold medium according to the real-time temperature of the third temperature sensor, the temperature of the hot medium circulator returned by the first temperature sensor, and the temperature of the cold medium circulator returned by the second temperature sensor using a set program. The control unit then controls the rotation amplitude of the medium inlet three-way valve through the temperature-controlled medium inlet motor device and controls the rotation amplitude of the medium outlet three-way valve through the temperature-controlled medium outlet motor device, thereby achieving dynamic temperature control. During the reaction process, if the temperature needs to be increased (or the reaction absorbs heat and the reaction temperature needs to be maintained), the temperature-controlled medium inlet motor device controls the medium inlet three-way valve to rotate to increase the flow rate of the hot medium and reduce or stop the flow rate of the cold medium. At the same time, the temperature-controlled medium outlet motor device is used to control the medium outlet three-way valve to rotate, and the rotation is the same as that of the medium inlet three-way valve. Part of the medium of the medium outlet three-way valve enters the hot medium circulator, and part enters the cold medium circulator, and the flow rate is consistent with the medium flow rate of the medium inlet three-way valve; conversely, if the temperature needs to be lowered (or the reaction releases heat and the reaction temperature needs to be maintained), the temperature-controlled medium inlet motor device controls the medium inlet three-way valve to rotate to reduce or stop the flow rate of the hot medium and increase the flow rate of the cold medium. At the same time, the temperature-controlled medium outlet motor device controls the medium outlet three-way valve to rotate, and the rotation is the same as that of the medium inlet three-way valve. Part of the medium of the medium outlet three-way valve enters the hot medium circulator, and part enters the cold medium circulator, and the flow rate is consistent with the medium flow rate of the medium inlet three-way valve. When the temperature needs to be lowered after the reaction is completed or the temperature suddenly rises during the experiment and needs to be lowered, the temperature control medium inlet motor device controls the medium inlet three-way valve to rotate to close the circulation of the hot medium and open the circulation of the cold medium to the maximum.

[0031] The medium inlet three-way valve and the medium outlet three-way valve need to be synchronously controlled to rotate to the same amplitude, and the temperatures of the hot medium circulator and the cold medium circulator need to be dynamically and accurately controlled to ensure dynamic temperature control. For example, during the reaction process, if the reactor needs to be heated up (or the reaction temperature needs to be maintained due to heat absorption), the temperature-controlled medium inlet motor device controls the medium inlet three-way valve to rotate to increase the flow rate of the hot medium and reduce or stop the flow rate of the cold medium. At the same time, the temperature-controlled medium outlet motor device controls the medium outlet three-way valve to rotate, and the rotation amplitude is the same as that of the medium inlet three-way valve. Part of the medium in the medium outlet three-way valve enters the hot medium circulator, and part enters the cold medium circulator, and the flow rate is consistent with the medium flow rate of the medium inlet three-way valve; conversely, if the reactor needs to be cooled down (or the reaction temperature needs to be maintained due to heat release), the temperature-controlled medium inlet motor device controls the medium inlet three-way valve to rotate to reduce or stop the flow rate of the hot medium and increase the flow rate of the cold medium. At the same time, the temperature-controlled medium outlet motor device controls the medium outlet three-way valve to rotate, and the rotation amplitude is the same as that of the medium inlet three-way valve. Part of the medium in the medium outlet three-way valve enters the hot medium circulator, and part enters the cold medium circulator, and the flow rate is consistent with the medium flow rate of the medium inlet three-way valve. Once the reactor temperature stabilizes, a fixed reaction temperature is set to maintain dynamic temperature equilibrium, thereby stably controlling the reactor temperature at the desired reaction temperature. Based on the real-time temperature readings from the third temperature sensor, the temperature signal from the hot medium circulator transmitted by the first temperature sensor, and the temperature signal from the cold medium circulator transmitted by the second temperature sensor, the control unit uses a pre-programmed calculation to calculate the flow rates of the three-way valves connecting the hot and cold medium inlets. This flow rate is then controlled by an intelligent motor to achieve dynamic temperature control. Each temperature sensor is linked to the temperature-controlled medium motor to dynamically control the rotation of the three-way valves in real time, achieving dynamic temperature control.

[0032] One end of the medium inlet three-way valve is connected to the reactor body, one end is connected to the hot medium circulator, and the other end is connected to the cold medium circulator.

[0033] The medium inlet three-way valve and the medium outlet three-way valve of the present application can both adopt commercially available intelligent T-shaped electric three-way ball valves. The principle of the T-shaped electric three-way ball valve is well known to those skilled in the art. By rotating the valve core of the three-way valve to change the rotation angle of the three-way valve, the flow rate and ratio of the cold and hot media in and out can be adjusted to achieve rapid heating and cooling.

[0034] The medium inlet three-way valve is overall "T"-shaped, including three channels: the first input port, the second input port and the output port. A rotatable valve core is provided inside the valve, and the rotation angle of the medium inlet three-way valve is adjusted by rotating the valve core.

[0035] The first input port is set to connect to the hot medium outlet pipe, the second input port is set to connect to the cold medium outlet pipe, and the output port is connected to the medium inlet of the kettle body interlayer.

[0036] Half of the three-way valve ball core structure can be closely attached to the inner wall, and the diameter of the other half of the structure is much smaller than the length of the inner wall diameter.

[0037] When the first and second input ports are fully opened, the hot medium flow and cold medium flow are measured at 100%. Then:

[0038] When the core remains Figure 4 In the state, that is, when the ball core rotates 0° clockwise, the first input port is fully opened, and the hot medium is input into the kettle body interlayer through the medium inlet of the kettle body interlayer at the same 100% flow rate; while the second input port is completely blocked by the ball core, and the cold medium flow rate is zero.

[0039] When the ball core rotates clockwise by 0° to 45°, that is, when it rotates to completely block the first input port, the hot medium will gradually reduce its flow rate by 0% to 100% and be input into the kettle body interlayer through the medium inlet of the kettle body interlayer, and the cold medium will gradually increase its flow rate by 0% to 100% and be input into the kettle body interlayer through the medium inlet of the kettle body interlayer, thereby reducing the temperature to a certain extent in a short period of time and finally achieving temperature control.

[0040] The medium outlet three-way valve is overall "T"-shaped, including three channels: an input port, a first output port, and a second output port. A rotatable valve core is provided inside the valve, and the rotation angle of the medium outlet three-way valve is adjusted by rotating the valve core.

[0041] Alternatively, you can achieve stable temperature increases by directly shutting off the cold medium circulation and only opening the hot medium circulation. Similarly, you can achieve rapid temperature reduction by directly shutting off the hot medium circulation and only opening the cold medium circulation. By rotating the three-way valve, you can control the flow rates of the hot and cold media. When temperature increases are required, increase the flow rate of the hot medium and decrease the flow rate of the cold medium.

[0042] The control unit of the present application may be a commercially available controller, such as a PLC controller.

[0043] The top connection of a typical reactor has a certain inclination angle, typically 5° to 10° relative to the longitudinal axis of the reactor (i.e., the angle formed between the central axis of the top connection and the longitudinal axis of the reactor is 5° to 10°). Therefore, the angle of the distillation head is generally set at 10°, although different angles can be used to accommodate other types of reactors. The angle between the side connection and the top connection of the distillation head can be adjusted based on the inclination angle of the reactor's top connection. Based on a 10° angle, the angle between the side connection and the top connection of the distillation head can be adjusted between 80° and 100°, with 90° being the preferred angle. By adjusting the angle of the side connection of a conventional distillation head, a rotary distillation head can be used to achieve both condensation reflux and distillation extraction. The angle between the side interface and the upper interface of the traditional distillation head is 75°. After this ordinary 75° distillation head is connected to the upper interface of the reactor, because the angle is less than 80°, when the ordinary distillation head of the prior art is rotated so that its side interface is downward, the angle between the side interface and the lower interface of the distillation head body is 75°. Due to the size limitation of the distillation head, when the condenser is installed at the side interface at this time, the condenser will interfere with the reactor body below the distillation head and cannot be installed. Therefore, it is impossible to rotate the ordinary distillation head and directly use its side interface to install the condenser to achieve distillation extraction, and it is impossible to achieve the dual-purpose of condensation reflux and distillation extraction.

[0044] Another aspect of the present invention is to design a rotatable distillation head that can be used to simultaneously realize or freely switch between condensation reflux and distillation extraction functions in a chemical reaction, which includes:

[0045] The distillation head body has an upper end interface, a lower end interface and a side interface. The upper end interface can be used to connect to the condenser, the lower end interface is used to connect to the reactor, and the side interface is used for steam outlet or reflux. The angle between the upper end interface and the side interface is adjustable, and the adjustment range is 80° to 100°.

[0046] Furthermore, the distillation head body can rotate around its central axis to adjust the relative positions of the side interfaces, so as to achieve free switching between condensation reflux and distillation extraction functions.

[0047] Furthermore, the angle between the upper end interface and the side interface is 90°.

[0048] Furthermore, by rotating, the side interface can be gradually rotated from a certain angle (for example, 10° to 30°) below the horizontal line to a certain angle (for example, 10° to 30°) above the horizontal line.

[0049] Furthermore, the distillation head body is connected to the reactor through the outer frosting of the outer surface of the lower end interface to ensure the sealing of the connection between the distillation head body and the reactor.

[0050] Furthermore, the inner surfaces of the upper end interface and the side interface are frosted to enhance the sealing performance and prevent sliding at the interface.

[0051] Furthermore, the distillation head body is made of a high-temperature-resistant and corrosion-resistant glass material to adapt to high-temperature physical or chemical reaction environments.

[0052] Furthermore, a guide groove is provided inside the distillation head body for guiding steam flow and liquid reflux to improve distillation efficiency. Preferably, the guide groove is rotatably arranged on the inner wall of the distillation head body.

[0053] Furthermore, the upper end interface of the distillation head body is connected to a detachable condenser for cooling and refluxing steam.

[0054] Furthermore, the condenser has a spiral structure to increase the condensation area and condensation effect.

[0055] The technical solution of the utility model has the following beneficial effects:

[0056] (1) The reaction device of the utility model can quickly heat up, cool down and maintain the temperature. A set of heat medium circulators, a set of cold medium circulators and a control unit are arranged on the reactor body. The three-way valve temperature control device is composed of two temperature control regulating motors to control the three-way valve rotation device. The reactor of the reaction device can achieve temperature increase or decrease within half a minute (or even less time), solving the problem that the reactor cannot be quickly heated up or cooled during the reaction process. For endothermic and exothermic experiments, the dynamic temperature balance can also be maintained by setting a fixed reaction temperature.

[0057] (2) The reaction device of the utility model can quickly heat up, cool down and maintain the temperature, and is easy to install and operate;

[0058] (3) The reaction device of the utility model, which can quickly heat up, cool down and maintain the temperature, is provided with a set of hot medium circulators and a set of cold medium circulators, thus solving the problem of water waste;

[0059] (4) The reaction device of the utility model can quickly heat up, cool down and maintain the temperature, and has a wide temperature control range. When the medium is water, the temperature control range is 1°C to 95°C; when the medium is silicone oil, the temperature control range is -50°C to 250°C;

[0060] (5) The reaction device of the utility model can quickly heat up and cool down and maintain the temperature. The upper part of the reactor is equipped with a rotatable distillation head. When in use, the distillation head is directly rotated. There is no need to replace or install a new reflux condensation device including the distillation head as in traditional experimental methods. The condenser tube only needs to be switched between the upper port and the side interface of the distillation head to realize the function switching of condensation reflux and distillation extraction. Under the coordinated action of the control unit of the reaction device and the cold and hot medium circulator, there is no need to wait for the reflux device to cool down naturally to room temperature, then disassemble the reflux device, then build the distillation extraction device, and then heat up again for distillation extraction. The reaction device has a simple structure and is easy to disassemble and clean. It also avoids the volatilization of raw materials affecting the health of the experimenter during the process of disassembling the reflux device and building the distillation extraction device, and also ensures the accuracy of the experimental results.

[0061] (6) The rotatable distillation head of the utility model can be applied to different types of reactions and has the characteristics of convenient operation, flexible adjustment and efficient distillation. It can not only conveniently and quickly complete the free switching between condensation reflux and distillation extraction functions, but also support the device to realize the functions of condensation reflux and distillation extraction at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model in conjunction with the accompanying drawings, wherein:

[0063] Figure 1 This is a schematic structural diagram of a reaction device capable of rapidly heating, cooling, and maintaining temperature according to Example 1 of the present invention during condensation and reflux;

[0064] Figure 2 This is a schematic structural diagram of a reaction device capable of rapidly heating, cooling, and maintaining temperature according to Example 2 of the present invention when performing distillation extraction;

[0065] Figure 3 This is a schematic diagram of the overall structure of the medium inlet three-way valve in the reaction device capable of rapidly heating, cooling and maintaining temperature according to Example 1 of the present utility model;

[0066] Figure 4 This is a schematic diagram of the internal structure of the medium inlet three-way valve in the reaction device capable of rapidly heating, cooling and maintaining temperature according to Example 1 of the present utility model;

[0067] Figure 5 This is a schematic structural diagram of a rotatable distillation head in a reaction device capable of rapidly heating, cooling, and maintaining temperature according to Example 1 of the present invention;

[0068] Among them: 1. Reactor body; 2. Reactor body interlayer; 3. Medium outlet; 4. Medium inlet; 5. Temperature control medium inlet motor device; 6. Medium inlet three-way valve; 7. Temperature control medium outlet motor device; 8. Hot medium outlet pipe; 9. Cold medium outlet pipe; 10. Hot medium circulator; 11. Cold medium circulator; 12. Medium outlet three-way valve; 13. Rotatable distillation head; T1, first temperature sensor; T2, second temperature sensor; T3, third temperature sensor; 14, reflux condenser; 15, receiving device; 16, control unit. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0070] In the description of the utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a connection between the two components. The terms "upper", "middle", "outer", "inner", "lower", "surrounding", "left", "right", "front", "back", "top", "bottom", etc. indicate directions or positional relationships. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the utility model. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0071] like Figure 1 and 2 As shown, the reaction device of the present invention that can quickly heat up, cool down and maintain temperature includes a reactor body 1, a temperature control medium inlet motor device 5, a temperature control medium outlet motor device 7, a hot medium circulator 10, a cold medium circulator 11, a medium inlet three-way valve 6, a medium outlet three-way valve 12, and a control unit 16. The outside of the reactor body 1 is provided with a reactor body interlayer 2, and the lower left end and the upper right end of the reactor body interlayer 2 are respectively provided with a medium inlet 4 and a medium outlet 3, as shown in FIG. Figure 1 and 3As shown, the hot medium outlet pipe 8 of the hot medium circulator 10 is connected to the first input port of the medium inlet three-way valve 6, the cold medium outlet pipe 9 of the cold medium circulator 11 is connected to the second input port of the medium inlet three-way valve 6, and the output port of the medium inlet three-way valve 6 is connected to the medium inlet 4 of the kettle body interlayer 2; the medium outlet 3 of the kettle body interlayer 2 is connected to the input port of the medium outlet three-way valve 12, the first output port of the medium outlet three-way valve 12 is connected to the hot medium inlet pipe of the hot medium circulator 10, and the second output port of the medium outlet three-way valve 12 is connected to the cold medium inlet pipe of the cold medium circulator 11, the temperature control medium inlet motor device 5 and the temperature control medium outlet motor device 7 are both communicated with the control unit 16, the control unit 16 controls the operation of the medium inlet three-way valve 6 through the temperature control medium inlet motor device 5, and the control unit 16 controls the operation of the medium outlet three-way valve 12 through the temperature control medium outlet motor device 7.

[0072] In a preferred embodiment, the heat medium circulator 10 is provided with a first temperature sensor T1 for measuring the temperature of the medium inside the heat medium circulator 10 , which is communicatively connected with the control unit 16 , the temperature control medium inlet motor device 5 and the temperature control medium outlet motor device 7 .

[0073] In another preferred embodiment, a second temperature sensor T2 for measuring the temperature of the medium inside the cold medium circulator 11 is provided in the cold medium circulator 11 and is communicatively connected to the control unit 16 , the temperature control medium inlet motor device 5 and the temperature control medium outlet motor device 7 .

[0074] In another preferred embodiment, a third temperature sensor T3 for measuring the temperature of the medium inside the kettle body interlayer 2 is provided in the kettle body interlayer 2, which is communicatively connected with the control unit 16, the temperature control medium inlet motor device 5 and the temperature control medium outlet motor device 7.

[0075] The first temperature sensor T1 transmits the temperature signal inside the hot medium circulator 10 to the control unit 16, the second temperature sensor T2 transmits the temperature signal inside the cold medium circulator 11 to the control unit 16, and the third temperature sensor T3 transmits the temperature signal inside the kettle body interlayer 2 to the control unit 16. The control unit 16 controls the opening of the medium inlet three-way valve 6 and the medium outlet three-way valve 12 through the temperature control medium inlet motor device 5 and the temperature control medium outlet motor device 7 according to the set reaction temperature, quenching reaction temperature (when the reaction is terminated), etc., to control the flow rate of the hot medium and the cold medium, and appropriately allocates the ratio of the medium of the medium outlet three-way valve 12 entering the hot medium circulator 10 and the medium entering the cold medium circulator 11, so as to adjust the internal temperature of the reactor body 1 to the required temperature.

[0076] In another preferred embodiment, Figure 3 and 4As shown, the medium inlet three-way valve 6 is generally T-shaped, including a first input port, a second input port, and an output port. The first input port is connected to the hot medium outlet pipe 8, the second input port is connected to the cold medium outlet pipe 9, and the output port is connected to the medium inlet 4 of the kettle body interlayer. The valve core (ball core) is installed inside the valve core and can rotate within the valve. The three-way valve can rotate at an angle of ∠1 ranging from 0° to 45°.

[0077] In another preferred embodiment, Figure 1 and 5 As shown, a rotatable distillation head 13 is provided on the upper part of the reactor body 1, and the rotatable distillation head 13 has an upper end interface, a lower end interface and a side interface provided on one side of the upper end interface (or between the upper end interface and the lower end interface), and the upper end interface and / or the side interface are connected to a reflux condenser 14, and the lower end interface is connected to the upper part of the reactor body 1.

[0078] In another preferred embodiment, the reflux condenser 14 is a spherical reflux condenser.

[0079] In another preferred embodiment, the angle between the side interface and the upper end interface is 80° to 100°.

[0080] In another preferred embodiment, the angle between the side interface and the upper end interface is 90°.

[0081] In another preferred embodiment, the upper interface and the lower interface have an angle between them of 90° to 270°, preferably 180°, without interfering with each other.

[0082] In another preferred embodiment, the lower end interface is an external frosted interface, the upper end interface is an internal frosted interface, and the side interface is an internal frosted interface.

[0083] In this embodiment, the reaction device of the present invention that can quickly heat up, cool down and maintain the temperature is, for example, a polymerization reaction device or a common chemical reaction device. Example 1

[0084] like Figure 1 As shown, the reaction device of this embodiment that can quickly heat up and cool down and maintain the temperature, when performing condensation reflux, includes a reactor body 1, a temperature control medium inlet motor device 5, a temperature control medium outlet motor device 7, a hot medium circulator 10, a cold medium circulator 11, a medium inlet three-way valve 6, a medium outlet three-way valve 12, and a control unit 16. The outside of the reactor body 1 is provided with a reactor body interlayer 2, and the lower left end and the upper right end of the reactor body interlayer 2 are respectively provided with a medium inlet 4 and a medium outlet 3, as shown in FIG. Figure 3As shown, the hot medium outlet pipe 8 of the hot medium circulator 10 is connected to the first input port of the medium inlet three-way valve 6, the cold medium outlet pipe 9 of the cold medium circulator 11 is connected to the second input port of the medium inlet three-way valve 6, and the output port of the medium inlet three-way valve 6 is connected to the medium inlet 4 of the kettle body interlayer 2; the medium outlet 3 of the kettle body interlayer 2 is connected to the input port of the medium outlet three-way valve 12, the first output port of the medium outlet three-way valve 12 is connected to the hot medium inlet pipe of the hot medium circulator 10, and the second output port of the medium outlet three-way valve 12 is connected to the cold medium inlet pipe of the cold medium circulator 11, the temperature control medium inlet motor device 5 and the temperature control medium outlet motor device 7 are both communicated with the control unit 16, the control unit 16 controls the operation of the medium inlet three-way valve 6 through the temperature control medium inlet motor device 5, and the control unit 16 controls the operation of the medium outlet three-way valve 12 through the temperature control medium outlet motor device 7.

[0085] A first temperature sensor T1 is provided in the heat medium circulator 10 for measuring the temperature of the medium inside the heat medium circulator 10. The heat medium is hot water (i.e., water with a temperature of approximately 70°C to 95°C). The first temperature sensor T1 is communicatively connected to the control unit 16, the temperature control medium inlet motor device 5, and the temperature control medium outlet motor device 7.

[0086] A second temperature sensor T2 is provided in the cold medium circulator 11 for measuring the temperature of the medium inside the cold medium circulator 11. The cold medium is cold water (i.e., water with a temperature of approximately 5°C to 20°C). The second temperature sensor T2 is communicatively connected to the control unit 16, the temperature control medium inlet motor device 5, and the temperature control medium outlet motor device 7.

[0087] A third temperature sensor T3 for measuring the temperature of the medium inside the kettle body interlayer 2 is provided in the kettle body interlayer 2 and is communicatively connected with the control unit 16 , the temperature control medium inlet motor device 5 and the temperature control medium outlet motor device 7 .

[0088] like Figure 3 and 4 As shown, the medium inlet three-way valve 6 is generally T-shaped and includes three channels: a first input port, a second input port, and an output port. The first input port is connected to the hot medium outlet pipe 8, the second input port is connected to the cold medium outlet pipe 9, and the output port is connected to the medium inlet 4 of the kettle body interlayer. A rotatable valve core is provided inside the three-way valve. The rotation angle ∠1 range of the three-way valve is 0° to 45°.

[0089] The rotation of the valve core changes the rotation angle of the medium inlet three-way valve 6, thereby changing the flow rate and ratio of the inflowing hot medium and cold medium, thereby achieving rapid heating or cooling.

[0090] like Figure 1 and 5As shown, a rotatable distillation head 13 is provided at the top of the reactor body 1. The rotatable distillation head 13 has an upper interface, a lower interface, and a side interface located on one side of the upper interface. The angle between the side interface and the upper interface is 90°, and the angle between the upper interface and the lower interface is 180°. The lower interface is externally frosted, the upper interface is internally frosted, and the side interface is internally frosted. The upper interface is connected to a spherical reflux condenser 14. The lower interface is connected to the top of the reactor body 1. The rotatable distillation head 13 is connected to the reactor body 1 through the lower interface and the reflux port at the top of the reactor body 1 at an angle of approximately 10° relative to the longitudinal axis of the reactor. The side interface is inward, approximately 30° above the horizontal line, and is sealed by a piston. The spherical reflux condenser is connected to the top of the distillation head to achieve the condensation and reflux function of the reaction.

[0091] The principle of heating and cooling the reaction device capable of rapid heating and cooling of the present embodiment is as follows: before starting the reaction, the hot medium circulator 10 is first set and heated to a fixed temperature, for example, 80°C to 95°C, and then the cold medium circulator 11 is set and cooled to a fixed temperature, for example, 5°C to 10°C. When the reactor needs to be heated to a fixed temperature, the control unit 16 calculates the flow rates of the hot medium and cold medium connecting the medium inlet three-way valves based on the real-time temperature of the third temperature sensor T3, the temperature of the hot medium circulator returned by the first temperature sensor T1, and the temperature of the cold medium circulator returned by the second temperature sensor T2, using a program set in the control device. The control unit 16 then controls the rotation amplitude of the medium inlet three-way valve 6 through the temperature-controlled medium inlet motor device 5 and controls the rotation amplitude of the medium outlet three-way valve 12 through the temperature-controlled medium outlet motor device 7, thereby achieving dynamic temperature control. During the reaction process, if the temperature needs to be increased, the temperature-controlled medium inlet motor device 5 controls the medium inlet three-way valve 6 to rotate to increase the flow rate of the hot medium and reduce or stop the flow rate of the cold medium. At the same time, the temperature-controlled medium outlet motor device 7 is used to control the medium outlet three-way valve 12 to rotate, and the rotation is the same as that of the medium inlet three-way valve. Part of the medium of the medium outlet three-way valve 12 enters the hot medium circulator 10, and part enters the cold medium circulator 11, and the flow rate is consistent with the medium flow rate of the medium inlet three-way valve 6; conversely, if the temperature needs to be lowered, the temperature-controlled medium inlet motor device 5 controls the medium inlet three-way valve 6 to rotate to reduce or stop the flow rate of the hot medium and increase the flow rate of the cold medium. At the same time, the temperature-controlled medium outlet motor device 7 is used to control the medium outlet three-way valve 12 to rotate, and the rotation is the same as that of the medium inlet three-way valve. Part of the medium of the medium outlet three-way valve enters the hot medium circulator 10, and part enters the cold medium circulator 11, and the flow rate is consistent with the medium flow rate of the medium inlet three-way valve 6.

[0092] When the temperature needs to be lowered after the reaction is completed or the temperature rises suddenly during the experiment and needs to be lowered, the temperature control medium inlet motor device 5 controls the medium inlet three-way valve 6 to rotate to close the circulation of the hot medium and open the circulation of the cold medium to the maximum.

[0093] The media inlet three-way valve 6 and the media outlet three-way valve 12 must be synchronously controlled to rotate at the same amplitude. The temperatures of the hot medium circulator 10 and the cold medium circulator 11 must be dynamically and precisely controlled to ensure dynamic temperature control. The control unit 16 calculates the flow rates of the hot and cold medium connecting media inlet three-way valves based on the real-time temperature of the third temperature sensor T3, the temperature signal of the hot medium circulator 10 transmitted by the first temperature sensor T1, and the temperature signal of the cold medium circulator 11 transmitted by the second temperature sensor T2. Using a pre-set program, the control unit 16 calculates the flow rates of the hot and cold medium connecting media inlet three-way valves. The intelligent motor then controls the rotation amplitude of the three-way valves to achieve dynamic temperature control. Each temperature sensor is linked to the temperature control medium motor device to achieve real-time dynamic control of the rotation amplitude of the three-way valves, thus achieving dynamic temperature control. Example 2

[0094] The reaction device of this embodiment capable of rapidly heating, cooling and maintaining temperature is used for condensation reflux. Figure 2 As shown, the only difference from Example 1 is that a spherical reflux condenser 14 is connected to the side interface of the rotatable distillation head 13. The other end of the spherical reflux condenser extends into a receiving device 15, which is a conical flask. In this case, the side interface faces outward, approximately 30° below horizontal, and the upper end is sealed with a piston. The spherical reflux condenser is connected to the side of the distillation head, enabling distillation and extraction. Example 3

[0095] The reaction device capable of rapidly heating, cooling and maintaining temperature in this embodiment differs from that in Example 1 only in that the side interface of the rotatable distillation head 13 faces outward, and the upper interface and the side interface are simultaneously connected to a spherical reflux condenser, thereby realizing the functions of reflux condensation and distillation extraction at the same time.

[0096] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A reaction device capable of rapidly heating, cooling and maintaining temperature, characterized in that: The invention comprises a reactor body (1), a temperature control medium inlet motor device (5), a temperature control medium outlet motor device (7), a hot medium circulator (10), a cold medium circulator (11), a medium inlet three-way valve (6), a medium outlet three-way valve (12), and a control unit (16). A reactor body interlayer (2) is provided on the outside of the reactor body (1), and a medium inlet (4) and a medium outlet (3) are provided at both ends of the reactor body interlayer (2). The hot medium outlet pipe (8) of the hot medium circulator (10) is connected to the first input port of the medium inlet three-way valve (6), the cold medium outlet pipe (9) of the cold medium circulator (11) is connected to the second input port of the medium inlet three-way valve (6), and the output port of the medium inlet three-way valve (6) is connected to the medium inlet (4) of the kettle body interlayer (2). The medium outlet (3) of the kettle body interlayer (2) is connected to the input port of the medium outlet three-way valve (12), the first output port of the medium outlet three-way valve (12) is connected to the hot medium inlet pipe of the hot medium circulator (10), and the second output port of the medium outlet three-way valve (12) is connected to the cold medium inlet pipe of the cold medium circulator (11). The temperature-controlled medium inlet motor device (5) and the temperature-controlled medium outlet motor device (7) are both in communication connection with the control unit (16). The control unit (16) controls the operation of the medium inlet three-way valve (6) via the temperature-controlled medium inlet motor device (5), and the control unit (16) controls the operation of the medium outlet three-way valve (12) via the temperature-controlled medium outlet motor device (7).

2. The reaction device capable of rapidly heating, cooling and maintaining temperature according to claim 1, characterized in that: A first temperature sensor (T1) for measuring the temperature of the medium inside the heat medium circulator (10) is provided in the heat medium circulator (10), and is communicatively connected to the control unit (16), the temperature control medium inlet motor device (5), and the temperature control medium outlet motor device (7).

3. The reaction device capable of rapidly heating, cooling and maintaining temperature according to claim 2, characterized in that: A second temperature sensor (T2) for measuring the temperature of the medium inside the cold medium circulator (11) is provided in the cold medium circulator (11), and is communicatively connected to the control unit (16), the temperature control medium inlet motor device (5), and the temperature control medium outlet motor device (7).

4. The reaction device capable of rapidly heating, cooling and maintaining temperature according to claim 3, characterized in that: A third temperature sensor (T3) for measuring the temperature of the medium inside the kettle body interlayer (2) is provided in the kettle body interlayer (2), and is communicatively connected to the control unit (16), the temperature control medium inlet motor device (5), and the temperature control medium outlet motor device (7).

5. The reaction device capable of rapidly heating, cooling and maintaining temperature according to claim 1, characterized in that: A rotatable distillation head (13) is provided on the upper portion of the reactor body (1). The rotatable distillation head (13) has an upper end interface, a lower end interface, and a side interface provided on one side of the upper end interface. The upper end interface and / or the side interface are connected to a reflux condenser (14). The lower end interface is connected to the upper portion of the reactor body (1).

6. The reaction device capable of rapidly heating, cooling and maintaining temperature according to claim 5, characterized in that: The reflux condenser (14) is one of a spherical reflux condenser, a serpentine reflux condenser, and a double-plug reflux condenser.

7. The reaction device capable of rapidly heating, cooling and maintaining temperature according to claim 5, characterized in that: The angle between the side interface and the upper end interface is 80° to 100°.

8. The reaction device capable of rapidly heating, cooling and maintaining temperature according to claim 7, characterized in that: The angle between the side interface and the upper end interface is 90°.

9. The reaction device capable of rapidly heating, cooling and maintaining temperature according to claim 5, characterized in that: On the premise that the upper end interface and the lower end interface do not interfere with each other, the angle between the two is 90° to 270°.

10. The reaction device capable of rapidly heating, cooling and maintaining temperature according to any one of claims 5 to 9, characterized in that: The lower end interface is an external frosted interface, the upper end interface is an internal frosted interface, and the side interface is an internal frosted interface.

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