Reaction kettle with balanced temperature in kettle

Abstract

The reaction kettle comprises a kettle body and a kettle cover, a heating pipe is arranged in the kettle body close to the wall of the kettle body, a fan is arranged at the end, away from the kettle cover, of the kettle body, an air guide barrel is arranged at the front end of an impeller of the fan, and an air distribution device is arranged between an outlet of the air guide barrel and the kettle cover. The air distribution device comprises an axial air distribution plate assembly and a radial air distribution plate, the front end of the axial air distribution plate assembly is connected with the air guide barrel, the rear end of the axial air distribution plate assembly is connected with the radial air distribution plate, and the aperture ratio of air distribution holes in the axial air distribution plate assembly is gradually increased from front to back in a gradient mode. And the aperture ratio of the air distribution holes of the radial air distribution plate is greater than that of the air distribution holes at the tail end section of the axial air distribution plate assembly. Due to the ingenious design of the gas distribution device and the baffle plate, the power of the fan can be reduced, and the balance of the temperature in the kettle is improved.

Description

Technical Field

[0001] The utility model relates to the field of reactors, in particular to a reactor with a balanced temperature inside the reactor. Background Art

[0002] Reactors are commonly used equipment in the field of chemical technology, but in order to adapt to the different requirements of different chemical reactions for reaction conditions such as temperature, reactors have a variety of structural settings to achieve better use effects. The external heating balance and timeliness of the reactor body are poor. Setting the heating tube inside the reactor body for heating can improve the heating balance and timeliness. The existing reactor is provided with a heating tube near the reactor body wall inside the reactor, and a fan is provided at the non-lid end of the reactor to promote the flow of gas in the reactor. The temperature of the axis and the edge of the reactor body is balanced near the fan due to good gas fluidity. However, in the middle and lid ends far from the fan, due to poor gas fluidity, the temperature of the axis of the reactor body is low, and the temperature near the heating tube is high, resulting in uneven temperature. The uneven temperature in the reactor leads to different reaction processes in different areas of the reactor, which affects the quality of the product and makes it difficult to meet the reaction requirements of supercritical foaming, supercritical printing and dyeing, etc., which require high temperature balance. Utility Model Content

[0003] The utility model aims to solve the deficiencies of the prior art and provides a reactor with a balanced temperature inside the reactor. The reactor can form an overall circulation of gas inside the reactor, thereby improving the temperature balance inside the reactor.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A reactor with balanced temperature inside the reactor comprises a reactor body and a reactor cover, a heating pipe is provided in the reactor body near the reactor body wall, a fan is provided in the reactor body away from one end of the reactor cover, an air guide tube is provided at the front end of the impeller of the fan, an air distribution device is provided between the air guide tube outlet and the reactor cover, the air distribution device comprises an axial air distribution plate assembly and a radial air distribution plate, the front end of the axial air distribution plate assembly is connected with the air guide tube, and the rear end is connected with the radial air distribution plate, the porosity of the air distribution holes on the axial air distribution plate assembly increases gradually from front to back, and the porosity of the air distribution holes on the radial air distribution plate is greater than the porosity of the air distribution holes at the endmost section of the axial air distribution plate assembly.

[0006] Furthermore, the air guide cylinder is a square-cone cylinder, and four baffles are installed on the outer wall of the square-cone cylinder along the generatrix direction.

[0007] Furthermore, the axial air distribution plate assembly is arranged in sections, and each section of the axial air distribution plate assembly is surrounded by 4 air distribution plates, and the 4 air distribution plates are distributed up and down and left and right. The radial air distribution plates have openings corresponding to the cavities of the axial air distribution plate assemblies.

[0008] Furthermore, the axial air distribution plate assembly is divided into at least two sections.

[0009] More preferably, the axial air distribution plate assembly is divided into three sections, namely, from front to back, the first air distribution plate section, the second air distribution plate section and the third air distribution plate section, which are respectively surrounded by the first air distribution plate, the second air distribution plate and the third air distribution plate, and radial air distribution plates are provided on the outside of the third air distribution plate section.

[0010] More preferably, the opening rates of the first air distribution plate, the second air distribution plate, the third air distribution plate and the fourth air distribution plate are 5%-12.5%, 15%-22.5%, 25%-32.5% and 35%-42.5%, respectively.

[0011] More preferably, the air distribution holes are in the shape of round holes or long strips and are distributed vertically or horizontally.

[0012] Furthermore, the fan is connected to a magnetic drive mechanism, and the magnetic drive mechanism is connected to a motor.

[0013] The beneficial effects of the present invention are as follows: (1) The air distribution device is cleverly designed. Its axial air distribution plate assembly can prevent the local temperature of the material directly exposed to the heating tube from being too high. The air distribution holes on the axial air distribution plate assembly and the radial air distribution plate have a gradient opening rate. The air distribution device with stepped openings can forcibly distribute the airflow, achieve overall circulation, and maintain a uniform temperature in the working area. (2) Adding a baffle outside the air guide can reduce the spiral flow direction of the fan, reduce fluid loss, reduce the power of the fan, and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 It is a schematic diagram of a reactor of the present utility model.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the reactor.

[0017] Figure 3 It is a schematic diagram of the air guide tube and deflector.

[0018] Figure 4 It is a cross-sectional schematic diagram of the axial air distribution plate assembly.

[0019] Figure 5 It is a schematic diagram of the radial air distribution plate structure.

[0020] Figure 6 It is the cloud diagram of impeller turbulent kinetic energy.

[0021] In the figure: 1 kettle cover, 2 kettle body, 3 clamp device, 4 motor, 5 magnetic drive mechanism, 6 fan, 7 air guide tube, 8 baffle, 9 air distribution device, 91 axial air distribution plate assembly, 911 first air distribution plate segment, 912 second air distribution plate segment, 913 third air distribution plate segment, 914 first air distribution plate, 915 second air distribution plate, 916 third air distribution plate, 92 radial air distribution plate, 921 opening, 93 air distribution hole, 10 heating tube, 11 cavity. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] It should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0024] The utility model relates to a reactor with a balanced temperature inside the reactor. Figure 1 and Figure 2 The kettle comprises a kettle body 2 and a kettle lid 1. The lid 1 and kettle body 2 are externally provided with a clamp 3. A heating tube 10 is located within the kettle body 2, near the kettle wall. A fan 6 is located within the kettle body 2 at the end away from the lid 1. The fan 6 is connected to a magnetic drive mechanism 5, which is in turn connected to a motor 4. An air duct 7 is located at the front end of the fan 6's impeller. An air distribution device 9 is located between the outlet of the air duct 7 and the kettle lid 1. The air distribution device 9 comprises an axial air distribution plate assembly 91 and radial air distribution plates 92. The porosity of the air distribution holes 93 on the axial air distribution plate assembly 91 increases gradually from front to back. The porosity of the air distribution holes 93 on the radial air distribution plate 92 is greater than that of the air distribution holes 93 at the end of the axial air distribution plate assembly 91. This stepped porosity achieves overall circulation, maintaining a uniform temperature within the kettle.

[0025] The air guide cylinder 7 is a square cone cylinder, and four baffles 8 are installed on the outer wall of the square cone cylinder along the generatrix direction. Figure 2 and Figure 3The effects of fan speed on power, air volume and flow field uniformity in the effective working area with and without baffles were compared. The change in power consumption, air volume and flow field uniformity in the effective working area with the addition of baffles was less than 10%, which was not a significant effect. The turbulent kinetic energy of the fan impeller with and without baffles was analyzed, and the turbulent kinetic energy cloud diagram was shown as follows: Figure 6 As shown in the figure, the turbulent kinetic energy near the impeller increases by 50% to 70% after installing the baffles. Installing four baffles along the generatrix of the square cone cylinder in front of the fan can significantly increase the turbulent kinetic energy near the impeller without significantly changing the flow field, thereby enhancing heat transfer.

[0026] In this embodiment, the axial air distribution plate assembly 91 is arranged in sections, and each section of the axial air distribution plate assembly 91 is surrounded by four air distribution plates, which are distributed up and down and left and right. The radial air distribution plate 92 has an opening 921 corresponding to the cavity of the axial air distribution plate assembly 91.

[0027] Furthermore, the axial air distribution plate assembly 91 is divided into at least two sections.

[0028] In this embodiment, the axial air distribution plate assembly 91 is divided into three sections: the first air distribution plate section 911, the second air distribution plate section 912, and the third air distribution plate section 913, which are respectively enclosed by the first air distribution plate 914, the second air distribution plate 915, and the third air distribution plate 916. The radial air distribution plates 92 are arranged radially on the outside of the third air distribution plate section 913. The cavity 11 between the first air distribution plate section 911, the second air distribution plate section 912, and the third air distribution plate section 913 is the effective working area. This area can be used to place shoe racks for shoe blanks or other items that require temperature control for curing or reaction. Figure 5 There is an opening 921 on the radial air distribution plate 92 corresponding to the cavity of the third air distribution plate segment 913 (the opening is not included in the calculation of the porosity of the air distribution holes 93 of the radial air distribution plate 92). When the kettle cover 1 is opened, objects can be placed in or taken out of the effective working area through the opening 921.

[0029] In this embodiment, the porosity of the first, second, and third air distribution plates 914, 915, 916, and radial air distribution plates 92 ranges from 5% to 12.5%, 15% to 22.5%, 25% to 32.5%, and 35% to 42.5%, respectively. The air distribution holes 93 are circular or elongated, distributed vertically or horizontally. The stepped air distribution device ensures forced airflow distribution, achieving overall circulation. The rational placement of the air distribution plates promotes even heat distribution throughout the kettle.

[0030] The utility model reduces the fan power by 60% and achieves temperature balance of ±1°C by improving the baffles and the air distribution device.

[0031] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A reactor with a uniform temperature inside, comprising a reactor body and a reactor cover, wherein a heating pipe is provided inside the reactor body near the reactor body wall, and a fan is provided inside the reactor body at one end away from the reactor cover, characterized in that: An air guide tube is provided at the front end of the impeller of the fan, and an air distribution device is provided between the outlet of the air guide tube and the kettle cover. The air distribution device includes an axial air distribution plate assembly and a radial air distribution plate. The front end of the axial air distribution plate assembly is connected with the air guide tube, and the rear end is connected with the radial air distribution plate. The porosity of the air distribution holes on the axial air distribution plate assembly increases gradually from front to back, and the porosity of the air distribution holes on the radial air distribution plate is greater than the porosity of the air distribution holes at the end section of the axial air distribution plate assembly.

2. The reactor with a balanced temperature inside the reactor according to claim 1, characterized in that: The air guide cylinder is a square cone-shaped cylinder, and four baffles are installed on the outer wall of the square cone-shaped cylinder along the generatrix direction.

3. A reactor with a balanced temperature inside the reactor according to claim 1 or 2, characterized in that: The axial air distribution plate assembly is arranged in sections, and each section of the axial air distribution plate assembly is surrounded by 4 air distribution plates, which are distributed up and down and left and right. The radial air distribution plates have openings corresponding to the cavities of the axial air distribution plate assemblies.

4. The reactor with a balanced temperature inside the reactor according to claim 3, characterized in that: The axial air distribution plate assembly is divided into at least two sections.

5. The reactor with a balanced temperature inside the reactor according to claim 3, characterized in that: The axial air distribution plate assembly is divided into three sections, namely, the first air distribution plate section, the second air distribution plate section and the third air distribution plate section from front to back, which are respectively surrounded by the first air distribution plate, the second air distribution plate and the third air distribution plate. A radial air distribution plate arranged radially is provided on the outside of the third air distribution plate section.

6. The reactor with a balanced temperature inside the reactor according to claim 5, characterized in that: The opening rates of the first air distribution plate, the second air distribution plate, the third air distribution plate and the fourth air distribution plate are 5%-12.5%, 15%-22.5%, 25%-32.5% and 35%-42.5% respectively.

7. The reactor with a balanced temperature inside the reactor according to claim 1, characterized in that: The air distribution holes are in the shape of round holes or long strips and are distributed vertically or horizontally.

8. The reactor with a balanced temperature inside the reactor according to claim 1, characterized in that: The fan is connected to the magnetic drive mechanism, and the magnetic drive mechanism is connected to the motor.

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