Heating reaction kettle

Abstract

The utility model discloses a heating reaction kettle which comprises a kettle body, a reaction chamber for substances to react is arranged in the kettle body, a feed port is formed in the top of the reaction chamber, and a discharge port is formed in the bottom of the reaction chamber; a condenser for condensing substances volatilized at high temperature is arranged at the top of the kettle body, an inlet at the front end of the condenser is communicated with an opening at the top of the kettle body, a liquid substance is guided into the reaction chamber by the tail end of the condenser through a return pipeline, and the reaction kettle is characterized in that an outlet of the return pipeline extends into the top of the reaction chamber and is close to the inner wall of the reaction chamber. The outlet of the return pipeline extends into the hollow groove-shaped division bar and is close to the inner wall of the reaction chamber, and condensed liquid substances slowly flow down along the inner wall through the return pipeline, so that direct impact on the stirred substances can be remarkably reduced, the liquid is prevented from splashing to areas such as the top wall which are difficult to touch and clean due to impact, and the service life of the reaction chamber is prolonged. Therefore, the cleanliness of the subsequent reaction process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a heating reaction kettle. Background Art

[0002] A reaction kettle is a device used for chemical reactions in chemical laboratories, pharmaceutical industries, chemical production and other occasions. It is a sealed container, usually made of high-strength glass, stainless steel or other materials. The reaction kettle can be used to control temperature, pressure and agitation, and is suitable for various chemical reactions and experiments. During operation, various substances are usually added into the reaction kettle, and the various substances are allowed to undergo chemical reactions in the reaction kettle, thereby obtaining the required reaction products.

[0003] During the reaction process, the reaction kettle may need to be heated to a relatively high temperature. In this case, the moisture and some liquid substances in the reaction kettle will volatilize and rise. To reduce waste and improve the purity of substances, a condenser for condensing the high-temperature volatilized substances is provided at the top of the reaction kettle, and the liquid substances are re-introduced into the kettle body through a reflux pipeline. However, when the outlet of the reflux pipeline directly extends into the reaction kettle, especially into the rotation area near the stirring paddle, the falling liquid will cause a large local impact on the stirred substances, resulting in uneven stirring; moreover, the impact will cause the liquid to splash onto areas such as the top wall that are difficult to reach and clean, affecting the subsequent reaction effect. Summary of the Utility Model

[0004] Based on this, in view of the above technical problems, the utility model provides a heating reaction kettle.

[0005] The purpose of the utility model can be achieved by the following technical solutions:

[0006] A heating reaction kettle includes a kettle body. A reaction chamber for substances to react is provided inside the kettle body. An inlet is provided at the top of the reaction chamber, and an outlet is provided at the bottom; a condenser for condensing high-temperature volatilized substances is provided at the top of the kettle body. The front-end inlet of the condenser is communicated with the opening at the top of the kettle body, and the tail end leads the liquid substances into the reaction chamber through a reflux pipeline. The outlet of the reflux pipeline extends into the top of the reaction chamber and is close to the inner wall of the reaction chamber.

[0007] With the above technical solution, the outlet of the reflux pipeline is close to the inner wall of the chamber, enabling the liquid to flow slowly along the inner wall, alleviating the direct impact force of the liquid on the stirring substance, and avoiding the liquid splashing onto the top wall and other areas that are difficult to reach and clean due to violent impact, thus ensuring the cleanliness of the subsequent reaction process. Secondly, by utilizing the preheating effect of the inner wall of the chamber, when the reflux liquid flows down along the wall, the liquid can be preliminarily heated, avoiding the sudden temperature drop and local instability that may be caused by cold liquid directly impacting the stirring substance at a relatively high temperature, and further ensuring the continuous stability of the reaction environment. Moreover, the slow spreading of the liquid along the inner wall also brings a significant dispersion effect. This flow pattern not only increases the contact area between the liquid and the stirring substance but also promotes the uniform distribution of the reflux liquid in the stirring substance, effectively preventing the situation of excessive local concentration or uneven distribution.

[0008] In a specific embodiment of the present utility model: a hollow groove-shaped partition strip extending axially is provided on the inner wall of the reaction chamber, and the outlet of the reflux pipeline is inserted into the upper end of the hollow groove-shaped partition strip.

[0009] In a specific embodiment of the present utility model: a bent pipe section is provided at a position on the reflux pipeline close to the top of the kettle body. With this structure, it can ensure that condensate water always exists in the bent pipe section, which can seal the outlet of the reflux pipeline, thereby avoiding the leakage of gas from the reflux pipeline to the outside.

[0010] In a specific embodiment of the present utility model: a stirring mechanism for stirring the substances in the reaction chamber is provided on the kettle body.

[0011] In a specific embodiment of the present utility model: the stirring mechanism includes a stirring shaft and stirring paddles arranged on the stirring shaft, and a driving motor for driving the rotation of the stirring shaft is provided outside the top of the kettle body.

[0012] In a specific embodiment of the present utility model: the stirring paddles include a first one-word paddle, a second one-word paddle, and a stirring frame arranged at intervals from top to bottom. Among them, the shape of the stirring frame can adapt to the irregular shape of the bottom of the kettle body.

[0013] In a specific embodiment of the present utility model: a heating mechanism for providing heat to the reaction chamber is further included.

[0014] In a specific embodiment of the present utility model: the heating mechanism includes a jacket installed on the outer wall of the kettle body. A heating chamber is formed between the jacket and the outer wall of the kettle body. An oil inlet pipeline is connected to the bottom of the outer wall of the jacket, and an oil outlet pipeline is connected to the top. The oil inlet pipeline is communicated with an oil tank.

[0015] In the specific embodiment of the present utility model: an expansion tank is connected to the outlet pipeline, the expansion tank is communicated with the fuel tank through a return pipeline, and a control valve is connected to the return pipeline.

[0016] In the specific embodiment of the present utility model: the heating mechanism further includes a coil pipe arranged along the inner wall and surrounding the reaction chamber, and the coil pipe is communicated with the water tank.

[0017] In the specific embodiment of the present utility model: a cleaning mechanism for cleaning the inner wall of the reaction chamber is arranged in the reaction chamber, and the cleaning mechanism is a plurality of spray heads connected to a water source and arranged at the upper end of the stirring shaft.

[0018] In summary, in the present utility model, the outlet of the reflux pipeline extends into the hollow groove-shaped partition strip and is close to the inner wall of the reaction chamber. The condensed liquid substance flows slowly along the inner wall through the reflux pipeline, which can significantly reduce the direct impact on the stirred substance and avoid the liquid splashing onto the top wall and other areas that are difficult to reach and clean due to the impact, thereby ensuring the cleanliness of the subsequent reaction process. Secondly, by utilizing the preheating effect of the inner wall of the chamber, when the reflux liquid flows down along the wall, the liquid can be preliminarily heated, avoiding the sudden temperature drop and local instability that may be caused by the direct impact of cold liquid on the stirred substance that is already at a relatively high temperature, and further ensuring the continuous stability of the reaction environment. Moreover, the slow spreading of the liquid along the inner wall also brings a significant dispersion effect. This flow pattern not only increases the contact area between the liquid and the stirred substance but also promotes the uniform distribution of the reflux liquid in the stirred substance, effectively preventing the situation of excessive local concentration or uneven distribution. By driving the stirring shaft and the stirring paddle arranged on the stirring shaft through a driving motor, the mixing of various substances is more uniform and the reaction is more complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a schematic structural diagram of a heating reaction kettle of the present utility model. SPECIFIC EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1 As shown, the present utility model is a heating reaction kettle, including a kettle body 10, a stirring mechanism 20, and a heating mechanism 30.

[0023] Inside the kettle body 10, there is a reaction chamber 11 for substances to react. At the top of the reaction chamber 11, there is a feed inlet, and at the bottom, there is a discharge outlet. At the top of the kettle body, there is a condenser 12 for condensing substances that volatilize at high temperatures. This condenser is a horizontal condenser. The front-end inlet of the condenser 12 is connected to the opening at the top of the kettle body 10, and the tail end leads the liquid substance into the reaction chamber 11 through a reflux pipeline 13. With this structure, during the reaction process, it may be necessary to heat to a relatively high temperature. In this case, the moisture and some liquid substances in the reaction chamber 11 will volatilize and rise, enter the condenser through the opening at the top of the kettle body, and be re-condensed into liquid substances. Subsequently, this liquid substance re-enters the reaction chamber through the reflux pipeline to continue the reaction and mixing, making the substance purer and reducing waste.

[0024] In this embodiment, the outlet 132 of the reflux pipeline 13 extends into the top of the reaction chamber 11 and is close to the inner wall of the reaction chamber. With this structure, placing the outlet of the reflux pipeline close to the inner wall of the chamber allows the liquid to flow slowly along the inner wall, alleviating the direct impact force of the liquid on the agitated substance and avoiding the liquid splashing into hard-to-reach and clean areas such as the top wall due to the impact, thus ensuring the cleanliness of the subsequent reaction process. Secondly, using the preheating effect of the inner wall of the chamber, when the reflux liquid flows down along the wall, the liquid can be preliminarily heated, avoiding the possible sudden temperature drop and local instability caused by the cold liquid directly impacting the agitated substance that is already at a relatively high temperature, and further ensuring the continuous stability of the reaction environment. Moreover, the slow spreading of the liquid along the inner wall also brings a significant dispersing effect. This flow pattern not only increases the contact area between the liquid and the agitated substance but also promotes the uniform distribution of the reflux liquid in the agitated substance, effectively preventing the situation of excessive local concentration or uneven distribution.

[0025] In this embodiment, on the inner wall of the reaction chamber 11, there is a hollow groove-shaped partition strip 14 extending axially. The outlet 132 of the reflux pipeline 13 is inserted into the upper end of the hollow groove-shaped partition strip 14. With this structure, it guides the liquid to flow slowly along the inner wall, further avoiding the direct impact of the liquid on the agitated substance.

[0026] In this embodiment, at a position on the reflux pipeline 13 close to the top of the kettle body, there is a bent pipe section 131. With this structure, it can ensure that there is always condensed water in the bent pipe section 131, which can seal the outlet of the reflux pipeline, thereby avoiding the leakage of gas from the reflux pipeline to the outside.

[0027] The stirring mechanism 20 is used to stir the substances in the reaction chamber 11, and includes a stirring shaft 21 and stirring paddles arranged on the stirring shaft 21. A driving motor 23 for driving the stirring shaft 21 is fixed outside the top of the kettle body 10 through a motor bracket 22. The driving motor 23 is connected to the stirring shaft 21 through a speed reducer 24. In this way, when the driving motor rotates, it drives the stirring shaft 21 to rotate in the reaction chamber 11 to mix the substances. At the same time, the setting of the speed reducer 24 enables the driving motor to have multiple speed adjustments, realizing the function of high and low speed mixing. In this embodiment, the stirring paddles are the first one-word paddle 251, the second one-word paddle 252 and the stirring frame 253 that are sleeved on the stirring shaft 21 and arranged at intervals from top to bottom. The shape of the stirring frame 252 can adapt to the irregular shape of the bottom of the kettle body, thereby further improving the uniformity of stirring. In addition, an auxiliary support 211 for rotatably supporting the bottom end of the stirring shaft 21 is provided on the bottom wall of the reaction chamber 11.

[0028] The heating mechanism 30 is used to provide heat for the reaction chamber, and includes a jacket 31 installed on the outer wall of the kettle body 10. A heating chamber 32 is formed between the jacket 31 and the outer wall of the kettle body 10. An oil inlet pipe is connected to the bottom of the outer wall of the jacket, and an oil outlet pipe 33 is connected to the top. A heater (not shown in the figure) for heating the oil is provided in the jacket 31. The oil inlet pipe is connected to an oil tank (not shown in the figure). An expansion tank 34 is connected to the oil outlet pipe 33. The expansion tank 34 re-introduces the oil into the oil tank through an oil return pipe 37. A control valve 35 is provided on the oil return pipe 37 near the outlet of the expansion tank 34. During operation, the control valve 35 is closed, and the heater is started to heat the oil. The hot oil can provide heat support for the reaction chamber, thereby promoting the reaction of the substances in the reaction chamber; when the oil expands in volume during heating, the excess hot oil will flow into the expansion tank 34 along the oil outlet pipe 33 for natural or forced cooling. After the operation is completed, the control valve 35 is opened, and the cooled oil in the expansion tank 34 flows into the oil tank through the oil return pipe 37 for reuse.

[0029] The heating mechanism 30 further includes a coil pipe 36 arranged along the inner wall and surrounding the reaction chamber. The coil pipe 36 is communicated with a water tank (not shown in the figure). During operation, the water tank introduces hot water into the coil pipe 36 to achieve double heating. Of course, cold water can also be introduced to cool the kettle body.

[0030] A cleaning mechanism 40 for cleaning the inner wall of the reaction chamber is provided in the reaction chamber 11.

[0031] The cleaning mechanism 40 is a plurality of spray heads connected to a water source and arranged at the upper end of the stirring shaft.

[0032] In summary, in the present utility model, the outlet of the reflux pipeline extends into the hollow groove-shaped partition strip and is close to the inner wall of the reaction chamber. The condensed liquid substance flows slowly along the inner wall through the reflux pipeline, which can significantly reduce the direct impact on the stirred substance and avoid the liquid splashing onto difficult-to-reach and clean areas such as the top wall due to the impact, thereby ensuring the cleanliness of the subsequent reaction process. Secondly, by utilizing the preheating effect of the inner wall of the chamber, when the reflux liquid flows down along the wall, the liquid can be preliminarily heated, avoiding the sudden temperature drop and local instability that may be caused by the direct impact of cold liquid on the stirred substance that is already at a relatively high temperature, and further ensuring the continuous stability of the reaction environment. Moreover, the slow spreading of the liquid along the inner wall also brings a significant dispersion effect. This flow pattern not only increases the contact area between the liquid and the stirred substance but also promotes the uniform distribution of the reflux liquid in the stirred substance, effectively preventing the situation of excessive local concentration or uneven distribution. By driving the stirring shaft and the stirring paddle arranged on the stirring shaft through the driving motor, the mixing of various substances is more uniform and the reaction is more complete.

[0033] The above has described in detail one embodiment of the present utility model, but the content described is only the preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. A heating reactor, comprising a reactor body, wherein a reaction chamber for substances to react is provided inside the reactor body, a feed inlet is provided at the top of the reaction chamber, and a discharge outlet is provided at the bottom; a condenser for condensing substances volatilized at high temperature is provided at the top of the reactor body, the front-end inlet of the condenser is communicated with the opening at the top of the reactor body, and the tail end introduces liquid substances into the reaction chamber through a reflux pipeline, and is characterized in that, The outlet of the reflux pipeline extends into the top of the reaction chamber and is close to the inner wall of the reaction chamber.

2. The heating reactor according to claim 1, wherein An axially extending hollow groove-shaped partition strip is provided on the inner wall of the reaction chamber, and the outlet of the reflux pipeline is inserted into the upper end of the hollow groove-shaped partition strip.

3. The heating reactor according to claim 1, characterized in that, The reflux pipeline has an elbow section near the top of the kettle body.

4. The heating reactor according to claim 1, characterized in that, A stirring mechanism for stirring the substances in the reaction chamber is provided on the kettle body.

5. The heating reactor according to claim 4, characterized in that, The stirring mechanism includes a stirring shaft and stirring paddles arranged on the stirring shaft, and a driving motor for driving the rotation of the stirring shaft is provided outside the top of the kettle body.

6. The heating reactor according to claim 5, wherein The stirring paddles include a first one-word paddle, a second one-word paddle and a stirring frame which are arranged at intervals from top to bottom. Among them, the shape of the stirring frame can adapt to the irregular shape of the bottom of the kettle body.

7. The heating reactor according to claim 1, characterized in that, It further includes a heating mechanism for providing heat to the reaction chamber. The heating mechanism includes a jacket installed on the outer wall of the kettle body. A heating chamber is formed between the jacket and the outer wall of the kettle body. An oil inlet pipeline is connected to the bottom of the outer wall of the jacket, and an oil outlet pipeline is connected to the top. The oil inlet pipeline is communicated with an oil tank.

8. The heating reactor according to claim 7, wherein An expansion tank is connected to the oil outlet pipeline. The expansion tank is communicated with the oil tank through an oil return pipeline, and a control valve is connected to the oil return pipeline.

9. The heating reactor according to claim 7, characterized in that, The heating mechanism further includes a coil pipe arranged along the inner wall and surrounding the reaction chamber. The coil pipe is communicated with a water tank.

10. The heating reactor according to claim 1, characterized in that, A cleaning mechanism for cleaning the inner wall of the reaction chamber is provided in the reaction chamber. The cleaning mechanism is a plurality of spray heads connected to a water source and arranged at the upper end of the stirring shaft.

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