A thermostatic system for epoxidation test reactions

Abstract

The utility model relates to a kind of constant temperature systems for epoxidation test application, including water bath, three-necked flask, agitator and cooling assembly;Water bath has a kettle body, the kettle body is a hollow container with upper end opening, still open a drain in the bottom side of kettle body, still set up a liquid level float ball in kettle body;The three-necked flask is placed in kettle body, the three-necked flask has a top and two side ports, one side port is reactant material feeding port, another side port is provided with a thermometer, the agitator has a stirring rod from the top of three-necked flask into the bottle body of three-necked flask, still set up stirring paddle on the top end of stirring rod;Cooling assembly includes a cooling nozzle, the bottom surface of cooling nozzle is opened with several spray ports.The constant temperature system in the utility model, through the intercoordination between water bath, cooling assembly and liquid level float ball, thermometer, to cooperate with controller interlock, the three-necked flask is heated or cooled, to realize the constant temperature of three-necked flask provides good foundation.

Description

Technical Field

[0001] This utility model relates to the field of epoxidation experimental reactions, and in particular to a constant temperature system for epoxidation experimental reactions. Background Technology

[0002] The epoxidation reaction is an exothermic reaction, which requires cooling during the reaction and heating to maintain a constant temperature in the later stages when energy is insufficient.

[0003] Currently, existing epoxidation experiments use a water bath, a three-necked flask, and a stirrer. The three-necked flask is placed in the water bath, and the stirrer is inserted into the three-necked flask to stir and mix the reaction liquid in the three-necked flask, so that the reaction is more complete.

[0004] The above-mentioned experimental setup has the following problems: First, during the reaction, the temperature inside the three-necked flask gradually rises as the reaction proceeds. When the temperature inside the three-necked flask exceeds the limit, it needs to be cooled down. The traditional method is to manually pour water directly onto the outer wall of the three-necked flask to achieve cooling. The cooled water then flows into a water bath. When the reaction reaches the later stage, the temperature inside the three-necked flask will drop to a low level. At this time, the three-necked flask needs to be heated up by heating the cooling water in the water bath to meet the temperature requirements of the later stage of the reaction. In addition, when using manual water pouring for cooling, it is inevitable that the liquid level in the water bath will become full. At this time, it is necessary to manually scoop out the water from the water bath with a cup. When the water bath is heated up later, the water in the water bath will also evaporate, causing the liquid level in the water bath to drop, and then it is necessary to manually add water to the water bath again. The whole process requires manual addition and scooping of water, which is very troublesome. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a constant temperature system for epoxidation test reactions that is convenient for experiments and reduces manual labor.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a constant temperature system for epoxidation test reaction, the innovation of which is: including a water bath, a three-necked flask, a stirrer and a cooling component;

[0007] The water bath has a body for holding a three-necked flask. The body is a hollow container with an open top. A drain outlet is also opened on the bottom side of the body. A liquid level float is also installed inside the body.

[0008] The three-necked flask is placed inside the pot. The three-necked flask has a top opening and two side openings. One side opening is the feed port for the reactants, and a thermometer is installed in the other side opening. The stirrer has a stirring rod that extends from the top opening of the three-necked flask into the body of the flask. A stirring blade is also provided at the top of the stirring rod.

[0009] The cooling assembly is positioned above the three-necked flask and includes a cooling nozzle with several spray nozzles on its bottom surface facing the three-necked flask.

[0010] Furthermore, the bottom surface of the cooling nozzle is arc-shaped, and the arc-shaped opening of the cooling nozzle faces downward.

[0011] Furthermore, a support assembly is also provided inside the pot body. The support assembly includes a support base disposed on the inner wall of the bottom of the pot body. A gap is left between the support base and the inner wall of the bottom of the pot body, and it is fixed to the inner wall of the bottom of the pot body by the cooperation of several support rods. A through hole for the bottom of a three-necked flask to pass through is opened in the middle of the support base, and the inner wall of the through hole is an arc shape that fits the body of the three-necked flask.

[0012] Furthermore, a fixing component is also provided inside the pot body. The fixing component includes a fixing ring with a through hole through which the top opening of a three-necked flask passes. The fixing ring is fixed to the pot body by the cooperation of three fixing ropes, and the connection points of each fixing rope to the fixing ring are distributed in a triangular pattern on the fixing ring.

[0013] The advantages of this utility model are as follows: The constant temperature system in this utility model, through the cooperation between the water bath, cooling components, liquid level float and thermometer, can be interlocked with the controller to heat or cool the three-necked flask, providing a good foundation for achieving constant temperature of the three-necked flask. Moreover, the entire cooling and heating process no longer requires manual operation, greatly reducing manual labor.

[0014] The bottom surface of the cooling nozzle is designed with an arc shape, which allows each spray nozzle to spray the three-necked flask more effectively, avoiding the phenomenon that some spray nozzles cannot reach the body of the three-necked flask, thus improving the spray cooling effect.

[0015] The support base inside the vessel is used to provide auxiliary support for the three-necked flask, preventing it from shaking due to spraying, stirring, or the presence of cooling water inside the vessel, thus ensuring the smooth progress of the reaction inside the three-necked flask.

[0016] The design of the fixing components inside the vessel uses a combination of fixing rings and fixing ropes to provide auxiliary fixation for the three-necked flask. This also prevents the three-necked flask from shaking due to spraying, stirring, or the presence of cooling water inside the vessel, ensuring the smooth progress of the reaction inside the three-necked flask. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the constant temperature system for the epoxidation test reaction of this utility model.

[0018] Figure 2 This is a schematic diagram showing the fit between the three-necked flask and the pot body in this utility model. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] like Figure 1 , Figure 2 The temperature control system shown includes a water bath, a three-necked flask 2, a stirrer 3, and a cooling assembly.

[0021] The water bath has a body 1 for holding a three-necked flask. The body 1 is a hollow container with an open top and a cavity inside. A drain outlet 11 is also opened on the bottom side of the body 1. A solenoid valve is installed at the drain outlet 11. A liquid level float 12 is also installed inside the body 1. The liquid level float 12 is used to detect the liquid level inside the body 1.

[0022] The three-necked flask 2 is placed in the cavity of the pot body 1. The three-necked flask 2 has a top opening 21 and two side openings 22. One side opening 22 is the feed port for the reactants, and the other side opening 22 is equipped with a thermometer 23 to detect the reaction temperature inside the three-necked flask 2. The stirrer 3 has a stirring rod 31 that extends from the top opening 21 of the three-necked flask 2 into the body of the three-necked flask 2. A stirring blade 32 is also provided at the top of the stirring rod 31. The stirring rod 31 is driven by the motor of the stirrer 3 to rotate, which in turn drives the stirring blade 32 to rotate, thereby realizing the stirring and mixing of the reaction inside the three-necked flask 2.

[0023] A support assembly is also provided inside the pot body 1. The support assembly includes a support base 5 set on the bottom inner wall of the pot body 1. There is a gap between the support base 5 and the bottom inner wall of the pot body 1. It is fixed to the bottom inner wall of the pot body 1 by the cooperation of several support rods 51. A through hole is opened in the middle of the support base 5 to allow the bottom of the three-necked flask 2 to pass through. The inner wall of the through hole is an arc shape that fits the body of the three-necked flask 2. The support base 5 installed inside the pot body 1 serves to provide auxiliary support for the three-necked flask 2, preventing it from shaking due to spraying, stirring, or the presence of cooling water inside the pot. During spraying, the condensed water impacts the body of the three-necked flask 2, causing it to shake. During stirring, the liquid inside the three-necked flask 2 shakes, further causing the body to shake. Therefore, the support base 5 provides auxiliary support for the three-necked flask 2, ensuring the smooth progress of the reaction inside. In addition, the support base 5 is designed with a gap between it and the bottom of the pot body 1, meaning it is suspended. This allows the three-necked flask 2 to contact the water inside the pot body 1 on both the upper and lower sides of the support base 5 when providing auxiliary support, without affecting subsequent heating.

[0024] A fixing component is also installed inside the pot body 1. The fixing component includes a fixing ring 6, which has a through hole through which the top opening 21 of the three-necked flask 2 passes. The fixing ring 6 is fixed to the pot body 1 by the cooperation of three fixing ropes 61. The pot body 1 also has binding holes for the fixing ropes 61 to be tied, and the connection points of each fixing rope 61 to the fixing ring 6 are distributed in a triangular pattern on the fixing ring 6. The design of the fixing component inside the pot body 1 is to provide auxiliary fixation for the three-necked flask 2 through the cooperation of the fixing ring 6 and the fixing ropes 61. It also aims to prevent the three-necked flask 2 from shaking due to spraying, stirring, or the presence of cooling water in the pot body 1, thus ensuring the smooth progress of the reaction in the three-necked flask 2.

[0025] The cooling assembly is located above the three-necked flask 2 and includes a cooling nozzle 4. The bottom surface of the cooling nozzle 4 has several spray nozzles facing the three-necked flask 2. The cooling nozzle 4 has a cooling cavity for storing cooling water, and the cooling cavity is connected to each spray nozzle. One side of the cooling nozzle 4 is connected to a cooling water source through a hose. A water pump is also installed on the hose. The cooling water from the cooling water source is pumped from the hose to the cooling cavity of the cooling nozzle 4, and finally sprayed out from each spray nozzle to achieve spray cooling of the three-necked flask 2.

[0026] The bottom surface of the cooling nozzle 4 is arc-shaped, and the arc-shaped opening of the cooling nozzle 4 faces downward. The arc-shaped design of the bottom surface of the cooling nozzle 4 allows each spray nozzle to spray more effectively onto the three-necked flask 2, avoiding the phenomenon that some spray nozzles cannot reach the body of the three-necked flask 2, thus improving the spray cooling effect.

[0027] In addition to the constant temperature system for the epoxidation test reaction of this utility model, a PLC controller is also required when conducting the epoxidation test. The water bath, solenoid valve, liquid level float 12, thermometer 23, and water pump of the cooling component are all connected to the PLC controller. The liquid level float 12 detects the liquid level in the bath 1 and transmits the detection data to the PLC controller. The thermometer 23 detects the temperature in the three-necked flask 2 and transmits the detection data to the PLC controller. After receiving the liquid level and temperature information, the PLC controller controls whether the water pump of the water bath, solenoid valve, and cooling component works to drain water from the bath 1, spray water from the cooling nozzle 4 for cooling, or heat the water bath.

[0028] Specifically, during the epoxidation reaction, the temperature inside the three-necked flask 2 is monitored by thermometer 23. When thermometer 23 detects that the temperature of the three-necked flask 2 exceeds the set high value, the PLC controller controls the water pump to turn on, introducing cooling water from the cooling water source and spraying it out from each spray nozzle of the cooling nozzle 4 to cool the three-necked flask 2. The sprayed water flows into the pot body 1 for temporary storage, and the thermometer 23 monitors the temperature of the three-necked flask 2. When the temperature of the three-necked flask 2 is detected to be lower than the set high value, the cooling nozzle 4 stops cooling the three-necked flask. When the temperature of the three-necked flask 2 is detected to be lower than the set low value, the PLC controller controls the water bath to start heating the water in the pot body 1, thereby raising the temperature of the three-necked flask 2. When the temperature of the three-necked flask 2 is detected to be higher than the set low value, the water bath stops working.

[0029] The water level in the pot 1 is detected by the level float 12. When the water level in the pot 1 exceeds the set high value, the PLC controller controls the solenoid valve to open and drain water from the drain port 11. When the water level in the pot 1 is lower than the set high value, the solenoid valve closes and the drainage stops. When the water level in the pot 1 detected by the level float 12 is lower than the set low value, the PLC controller controls the water pump to open and the cooling nozzle 4 to spray water to compensate for the water level in the pot 1. When the water level in the pot 1 detected by the level float 12 is higher than the set low value, the water pump closes and the compensation stops.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A constant temperature system for an epoxidation test reaction, characterized in that: Includes a water bath, a three-necked flask, a stirrer, and a cooling assembly; The water bath has a body for holding a three-necked flask. The body is a hollow container with an open top. A drain outlet is also opened on the bottom side of the body. A liquid level float is also installed inside the body. The three-necked flask is placed inside the pot. The three-necked flask has a top opening and two side openings. One side opening is the feed port for the reactants, and a thermometer is installed in the other side opening. The stirrer has a stirring rod that extends from the top opening of the three-necked flask into the body of the flask. A stirring blade is also provided at the top of the stirring rod. The cooling assembly is positioned above the three-necked flask and includes a cooling nozzle with several spray nozzles on its bottom surface facing the three-necked flask.

2. The isothermal system for epoxidation test reaction according to claim 1, characterized in that: The bottom surface of the cooling nozzle is arc-shaped, and the arc-shaped opening of the cooling nozzle faces downward.

3. The isothermal system for epoxidation test reaction according to claim 1, characterized in that: The pot body is also provided with a support assembly, which includes a support base set on the bottom inner wall of the pot body. There is a gap between the support base and the bottom inner wall of the pot body, and it is fixed to the bottom inner wall of the pot body by the cooperation of several support rods. A through hole for the bottom of a three-necked flask to pass through is opened in the middle of the support base, and the inner wall of the through hole is an arc shape that fits the body of the three-necked flask.

4. The isothermal system for epoxidation test reaction according to claim 1, characterized in that: The pot body is also provided with a fixing component, which includes a fixing ring. The fixing ring has a through hole through which the top opening of a three-necked flask passes. The fixing ring is fixed to the pot body by the cooperation of three fixing ropes, and the connection points of each fixing rope and the fixing ring are distributed in a triangular pattern on the fixing ring.

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