An electric heating reaction kettle with optimized stirring efficiency

Abstract

The application relates to the technical field of mixing and stirring, in particular to an electric heating reaction kettle capable of optimizing stirring efficiency, which comprises a reaction shell, a ventilation cylinder and a heating assembly. A gas passage for passing in heating gas is formed between the reaction shell and the ventilation cylinder. The heating assembly comprises a plurality of heating blocks with a folded state and an unfolded state, the heating blocks are electric heating elements and can electrically heat raw materials. When the heating blocks are in the folded state, a heating area is formed between the outer wall of the heating blocks and the inner wall of the reaction shell. Therefore, through synchronous action of electric heating of the heating blocks and steam heating of the gas passage, heat is transferred from the wall surfaces of the heating blocks and the reaction shell to the raw materials located in the heating area, the heat conduction path is shortened, the heating area of the raw materials is increased, the raw materials are rapidly and uniformly preheated, and the product quality stability is improved.

Description

Technical Field

[0001] This invention relates to the field of mixing and stirring technology, and in particular to an electrically heated reactor with optimized stirring efficiency. Background Technology

[0002] Heated reactors are core equipment in industrial production used to realize chemical reactions, widely used in chemical, pharmaceutical, food, and coating industries, capable of completing various processes such as polymerization, condensation, sulfidation, and hydrogenation. In use, raw materials are first added to the reaction shell according to the reaction requirements. After sealing the reaction shell, the temperature is controlled by heating elements, while a stirring device ensures uniform mixing and thorough reaction. Heating methods for reactors include indirect and direct heating. Indirect heating commonly uses a jacket to circulate steam, heat transfer oil, or hot water, or it can use built-in coils to transfer heat to the materials inside the reaction shell via a heat transfer medium. This method offers advantages such as uniform heating and convenient temperature control. Direct heating includes direct insertion of electric heating elements into the materials and electromagnetic induction to heat the reaction shell itself. This method offers rapid heating and higher thermal efficiency.

[0003] However, when the heating element preheats the raw materials, the distance between the raw materials and the heating element varies in different areas. Areas closer to the heating element heat up faster, while areas farther away need to receive heat indirectly through heat conduction. This results in a significant temperature gradient within the reaction chamber. Overheating in some areas may trigger side reactions, while insufficient heating in others will lead to incomplete reactions, severely affecting product quality stability. Furthermore, since the heating element cannot cover all areas within the reaction chamber, raw materials far from the heating element require prolonged heat conduction to reach the preheating temperature, reducing production efficiency and increasing energy consumption and production costs. Summary of the Invention

[0004] Therefore, it is necessary to provide an electrically heated reactor with optimized stirring efficiency to address the problem of uneven heating caused by the large difference in heat conduction paths between raw materials and heating elements in current heated reactors.

[0005] The above objectives are achieved through the following technical solutions:

[0006] An electrically heated reactor with optimized stirring efficiency includes:

[0007] A reaction shell, wherein a reaction chamber is formed inside the reaction shell.

[0008] A ventilator is coaxially and fixedly sleeved on the outer wall of the reaction shell, forming a channel between the ventilator and the reaction shell for introducing heating substances.

[0009] A heating assembly includes multiple heating blocks and a power source. The multiple heating blocks are located within the reaction chamber and are used to heat the raw materials. The multiple heating blocks have a closed state and an extended state. When the multiple heating blocks are in the closed state, they are close together to form a closed chamber, and a heating area for the raw materials is formed between the outer walls of the multiple heating blocks and the inner wall of the reaction chamber. When the multiple heating blocks are in the extended state, they are spaced apart to allow the raw materials to flow between two adjacent heating blocks. The power source is used to drive the multiple heating blocks to switch between the closed state and the extended state.

[0010] The stirring assembly is used to stir the raw materials when the heating block is in the deployed state.

[0011] Furthermore, the power source includes a first inclined plate, a second inclined plate, and a threaded rod. The first and second inclined plates are distributed along the axial direction of the reaction shell and are coaxially slidably connected to the inner wall of the reaction shell. The first and second inclined plates extend in opposite directions at a preset inclination angle. One end of each heating block is slidably connected to the first inclined plate, and the other end is slidably connected to the second inclined plate. The threaded rod is threaded to the first and second inclined plates in opposite directions and is used to drive the first and second inclined plates to move away from or towards each other, thereby driving the plurality of heating blocks to move radially along the reaction shell.

[0012] Furthermore, the stirring assembly includes a rotating shaft, multiple stirring blades, and a driving structure. The rotating shaft is coaxially rotatably connected to the reaction shell. The multiple stirring blades are evenly spaced along the axial direction of the rotating shaft and are coaxially fixedly connected to the rotating shaft. The driving structure is used to drive the rotating shaft to rotate.

[0013] When the heating blocks are in the deployed state, the rotation of the stirring blades can drive the raw material through the gap between adjacent heating blocks.

[0014] Furthermore, the drive structure can also drive the heating block to rotate around the axis of the reaction shell.

[0015] Furthermore, the two opposite sidewalls of the heating block are respectively a wavy first surface and a flat second surface. When multiple heating blocks are in the closed state, the first surface of any heating block abuts against the second surface of the adjacent heating block.

[0016] Furthermore, the power source can also drive the heating block to move axially along the reaction shell.

[0017] Furthermore, the power source can also drive adjacent heating blocks to move relative to each other along the axial direction of the reaction shell.

[0018] Furthermore, along the axis of the reaction shell, any two heating blocks that abut against each other are respectively a first block and a second block; a plurality of first blocks can surround to form a first chamber, and a plurality of second blocks can surround to form a second chamber, the first chamber and the second chamber being distributed along the axis of the reaction shell.

[0019] The power source includes a first inclined plate, a second inclined plate, an upper threaded rod, and a lower threaded rod. There are two of each of the first and second inclined plates. The two first inclined plates and the two second inclined plates are arranged sequentially along the axial direction of the reaction shell and are slidably connected to the inner wall of the reaction shell. The first inclined plate and the second inclined plate extend in opposite directions at a preset inclination angle.

[0020] The two ends of the first block are slidably connected to a first inclined plate; the two ends of the second block are slidably connected to a second inclined plate; the upper threaded rod is rotatably connected to two first inclined plates with the same thread; the lower threaded rod is rotatably connected to two second inclined plates with the same thread.

[0021] Furthermore, a first elastic element is provided between the first block and the first inclined plate, and the elastic force of the first elastic element always keeps the first block away from the axis of the reaction shell; a second elastic element is provided between the second block and the second inclined plate, and the elastic force of the second elastic element always keeps the second block away from the axis of the reaction shell.

[0022] Furthermore, the heating assembly also includes a limiting structure. Along the circumference of the reaction shell, any two adjacent first blocks or second blocks are respectively a first sub-block and a second sub-block. The first sub-block and the second sub-block can move relative to the first inclined plate or the second inclined plate along the axial direction of the reaction shell. The limiting structure is used to restrict the first inclined plate or the second inclined plate from driving the first sub-block to move along the axis of the reaction shell.

[0023] The beneficial effects of this invention are:

[0024] This invention provides an electrically heated reactor with optimized stirring efficiency, comprising a reaction shell, a venting cylinder, and a heating assembly. A reaction chamber is formed inside the reaction shell. The venting cylinder is coaxially fixed to the outer wall of the reaction shell, forming a gas channel for introducing heating gas between the reaction shell and the venting cylinder. The heating assembly includes multiple heating blocks, which have both a closed and an extended state. When the heating blocks are in the closed state, they adhere to each other to form a cylinder, with a uniform distance between its outer wall and the inner wall of the reaction shell, and an annular heating area is formed between the heating blocks and the reaction shell. Thus, the electric heating of the heating blocks and the steam heating of the gas channel work synchronously, allowing heat to be transferred directly to the raw material through the outer wall of the heating blocks and indirectly to the raw material through the inner wall of the reaction shell. Heat is simultaneously applied to the raw material from both the inner and outer sides of the heating area, shortening the heat conduction path and making the heating distance of the raw material in each area more uniform. At the same time, the heating area formed between the heating blocks and the reaction shell increases the heating area of ​​the raw material, achieving rapid and uniform preheating, effectively avoiding localized overheating or underheating of the raw material, and improving the stability of product quality. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an electrically heated reactor with optimized stirring efficiency provided in an embodiment of the present invention;

[0026] Figure 2 for Figure 1 Exploded view of the structure shown;

[0027] Figure 3 for Figure 1 Side view of the structure shown;

[0028] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0029] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0030] Figure 6 This is a schematic diagram of the structure of the heating component and the stirring component in an electrically heated reactor for optimizing stirring efficiency, provided by an embodiment of the present invention.

[0031] Figure 7 This is a schematic diagram of the structure of the first block and the first inclined plate in an electrically heated reactor for optimizing stirring efficiency, provided by an embodiment of the present invention.

[0032] Figure 8 for Figure 7 Top view of the first block in the middle;

[0033] Figure 9This is a schematic diagram of the structure of the first and second sub-blocks in an electrically heated reactor for optimizing stirring efficiency, provided by an embodiment of the present invention.

[0034] Figure 10 for Figure 9 A cross-sectional view of the structure shown.

[0035] in:

[0036] 110. Reaction shell; 111. Cap; 112. Pressure gauge; 113. Liquid outlet; 114. Valve; 120. Vent; 121. Air inlet; 122. Air outlet; 123. Support; 130. Conduit;

[0037] 210. First block; 211. First compression spring; 212. First sub-block; 213. Limiting block; 214. Second sub-block; 215. Third compression spring; 216. Sliding block; 220. Second block; 221. Second compression spring; 230. First inclined plate; 240. Second inclined plate; 250. Mounting bracket; 260. Upper threaded rod; 270. Lower threaded rod; 280. Rotating motor;

[0038] 310. Rotating shaft; 311. Limiting groove; 320. Stirring blade; 330. First drive motor; 340. Rotating frame; 350. Second drive motor. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0040] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] The following reference Figures 1 to 10 This invention describes an electrically heated reactor with optimized stirring efficiency, provided by an embodiment of the present invention.

[0043] An embodiment of the present invention provides an electrically heated reactor with optimized stirring efficiency, comprising a reaction shell 110, a vent 120, a conduit 130, a heating assembly, and a stirring assembly.

[0044] The reaction shell 110 is a container structure with an opening at the top, forming a reaction chamber inside to contain raw materials and provide space for chemical reaction. A cover 111 is coaxially fixed to the reaction shell 110, sealing it to prevent leakage of raw materials and escape of substances during the reaction. A pressure gauge 112 is fixed to the cover 111, monitoring the pressure inside the reaction chamber in real time to ensure the reaction proceeds within a safe pressure range. An outlet 113 is located at the bottom of the reaction shell 110, providing a discharge channel for the raw materials after the reaction is complete. A valve 114 is located on the outer wall of the reaction shell 110 at the outlet 113, controlling the opening and closing of the outlet 113 to achieve precise control of raw material discharge.

[0045] A vent 120 is coaxially fixed to the outer wall of the reaction shell 110, forming an annular channel between the vent 120 and the reaction shell 110 for introducing heating gas. The outer wall of the vent 120 has an inlet 121 and an outlet 122. The inlet 121 is located in the lower part of the vent 120, allowing external heating gas to enter the annular channel. The outlet 122 is located in the upper part of the vent 120, allowing the heating gas to exit the annular channel. The temperature of the reaction shell 110 is regulated by the introduction and discharge of heating gas. A bracket 123 is fixedly installed on the outer wall of the vent 120, securing the entire device in a preset position to ensure stability during operation.

[0046] The conduit 130 is a bellows structure that can extend and retract. One end of the conduit 130 is inserted into the reaction shell 110, and the other end is connected to an external power source to transmit electrical energy to the heating component.

[0047] The heating assembly includes multiple heating blocks and a power source.

[0048] The heating blocks are block-shaped structures capable of electric heating, generating heat rapidly upon energization. Multiple heating blocks are located within the reaction chamber of the reaction shell 110, used for direct electric heating of the raw materials within the chamber. Each heating block has a contact plate extending radially from both ends of the reaction shell 110. The heating blocks have both a closed and an extended state. When the heating blocks are in the closed state, the sidewalls of two adjacent heating blocks are tightly fitted together, and the contact plates of two adjacent heating blocks are in close contact, collectively forming a closed chamber. This chamber forms a cylinder coaxial with the reaction shell 110, and the distance between the outer walls of the heating blocks and the inner wall of the reaction shell 110 is completely equal, forming a uniform annular heating area. When the heating blocks are in the extended state, they move radially outward from the reaction shell 110 to a preset position, creating a flow gap between adjacent heating blocks to allow the raw materials to flow freely between them.

[0049] The power source includes a first inclined plate 230, a second inclined plate 240, a mounting bracket 250, a threaded rod, and a rotating motor 280.

[0050] The first inclined plate 230 and the second inclined plate 240 are both annular structures. The first inclined plate 230 and the second inclined plate 240 are distributed vertically along the axial direction of the reaction shell 110. The first inclined plate 230 is located directly above the second inclined plate 240. The first inclined plate 230 and the second inclined plate 240 are coaxially slidably connected to the inner wall of the reaction shell 110.

[0051] Multiple first inclined rods are fixedly installed on the first inclined plate 230, evenly distributed around the circumference of the reaction shell 110. Multiple second inclined rods are fixedly installed on the second inclined plate 240, evenly distributed around the circumference of the reaction shell 110. The first and second inclined rods extend in opposite directions at a preset fixed inclination angle. The first inclined rods extend obliquely upward, and the second inclined rods extend obliquely downward, forming a symmetrical guide structure. Each heating block has a sliding rod fixedly extending from both ends along the axial direction of the reaction shell 110. Both the first and second inclined rods can be embedded in the side wall grooves of the sliding rods. The sliding rod at the upper end of the heating block is slidably connected to the first inclined plate 230 via the first inclined rod, and the sliding rod at the lower end is slidably connected to the second inclined plate 240 via the second inclined rod. Both ends of the heating block can move on the first inclined plate 230 or the second inclined plate 240 along the inclination direction of the first or second inclined rod.

[0052] The mounting frame 250 is a ring-shaped frame structure, coaxially rotatably connected to the inner wall of the upper end of the reaction shell 110. Multiple threaded rods are provided, uniformly rotatably connected to the mounting frame 250 along the circumference of the reaction shell 110. The threaded rods have a bidirectional thread structure, with multiple threaded rods passing through the first inclined plate 230 and the second inclined plate 240 along the axial direction of the reaction shell 110, and respectively connected to the first inclined plate 230 and the second inclined plate 240 by threaded rotation in opposite thread directions. The rotation of the threaded rods can drive the first inclined plate 230 and the second inclined plate 240 to move away from or towards each other along the axial direction of the reaction shell 110, thereby driving multiple heating blocks to move synchronously along the radial direction of the reaction shell 110 through the guiding action of the first and second inclined rods, achieving stable switching between the closed and unfolded states of the heating blocks. A rotary motor 280 is fixedly connected to the mounting frame 250 and connected to the upper end of the threaded rods to drive the threaded rods to rotate.

[0053] The stirring assembly includes a rotating shaft 310, stirring blades 320, and a drive structure.

[0054] The rotating shaft 310 is a cylindrical shaft that is coaxially rotatably connected to the reaction shell 110, passing through the bottom center of the cover 111 and the reaction shell 110, and is used to provide mounting and rotational support for the stirring blades 320. When multiple heating blocks are in the closed state, the abutment plates of two adjacent heating blocks are in close contact, and the abutment plate of each heating block is in close contact with the outer wall of the rotating shaft 310, so that multiple heating blocks and the rotating shaft 310 together form a closed chamber.

[0055] The stirring blades 320 are plate-shaped stirring structures, and multiple stirring blades 320 are evenly spaced along the axial direction of the rotating shaft 310, with each stirring blade 320 coaxially fixed to the rotating shaft 310. When the heating blocks are in the unfolded state, the rotation of the stirring blades 320 can drive the raw material through the gap between adjacent heating blocks.

[0056] The drive structure includes a first drive motor 330, a rotating frame 340, and a second drive motor 350. The first drive motor 330 is fixedly connected to the upper end of the rotating shaft 310 and is used to drive the rotating shaft 310 to rotate at a preset speed. The rotating frame 340 is a multi-branch frame structure, and the rotating frame 340 is coaxially rotatably connected to the rotating shaft 310. Each branch of the rotating frame 340 is fixedly connected to a heating block at its end. The second drive motor 350 is connected to the lower end of the rotating frame 340 extending downward from the reaction shell 110 and is used to drive the rotating frame 340 to rotate the heating block, further improving the uniformity of stirring.

[0057] In the initial stage of equipment use, the heating blocks are in a closed state, and the abutment blocks on each heating block are tightly fitted to the outer wall of the rotating shaft 310, forming a closed chamber. Raw materials are injected through the opening above the reaction shell 110, entering the annular heating area between the heating blocks and the reaction shell 110. Once the heating area is filled with raw materials, the heating blocks are energized for electric heating. Simultaneously, heating gas is introduced through the annular channel between the vent 120 and the reaction shell 110 via the air inlet 121. These two heating methods work together to initially heat the raw materials within the reaction chamber. The pressure gauge 112 monitors the pressure changes inside the reaction shell 110 in real time.

[0058] When the temperature of the raw material reaches the preset value, the rotating motor 280 starts and drives the threaded rod to rotate, causing the first inclined plate 230 and the second inclined plate 240 to move away from each other along the axial direction of the reaction shell 110. Through the guiding action of the first and second inclined rods, the heating block moves radially along the reaction shell 110 towards the inner wall of the reaction shell 110, so that a flow gap is formed between adjacent heating blocks, and the heating block switches to the unfolded state.

[0059] Subsequently, the first drive motor 330 drives the rotating shaft 310 to rotate, causing multiple stirring blades 320 fixed on the rotating shaft 310 to rotate synchronously. The second drive motor 350 drives the rotating frame 340 to rotate, causing the heating block fixedly connected to the rotating frame 340 to rotate synchronously.

[0060] At this point, the flow gap between adjacent heating blocks forms a first type of flow channel and a second type of flow channel. Along the axial direction of the reaction shell 110, the projection of the first type of flow channel coincides with the projection of the stirring blade 320, while the projection of the second type of flow channel does not coincide with the projection of the stirring blade 320. This allows the raw material to circulate within the closed chamber under the drive of the stirring blade 320. Under the rotation of the stirring blade 320, the raw material in the closed chamber flows out through the first type of flow channel and enters the heating area between the heating block and the reaction shell 110. The raw material in the heating area re-enters the closed chamber through the upper and lower ends of the heating block or through the second type of flow channel, ensuring uniform mixing and improving reaction uniformity.

[0061] During the reaction, pressure gauge 112 continuously monitors the internal pressure of the reaction shell 110 in real time to ensure that the reaction proceeds within safe parameter ranges. After the reaction is completed, the heating block stops heating, and the rotary motor 280, the first drive motor 330, and the second drive motor 350 are turned off. The vent 120 stops supplying heating gas through the air inlet 121. Once the internal temperature and pressure of the reaction shell 110 have dropped to a safe range, valve 114 at the liquid outlet 113 is opened, and the reacted raw materials are discharged through the liquid outlet 113.

[0062] Therefore, by simultaneously heating the heating block electrically and the gas channel steam, heat is transferred directly to the raw material through the outer wall of the heating block, and indirectly through the inner wall of the reaction shell 110. Heat is applied to the raw material from both the inner and outer sides of the heating area, shortening the heat conduction path. Simultaneously, the annular heating area formed between the heating block and the reaction shell 110 increases the heated area of ​​the raw material, enabling it to be heated to the target temperature in a short time, achieving simultaneous and rapid heating. Furthermore, when the heating block is switched to the deployed state, and under the action of the stirring blades 320, the raw material circulates within the reaction chamber through the first type of flow channel, the second type of flow channel, and both ends of the heating block. The heating block rotates synchronously with the rotating frame 340 and the stirring blades 320, significantly improving the uniformity of the stirring.

[0063] Furthermore, the two opposite sidewalls of the heating block are respectively a first surface and a second surface. The first surface has a continuous wavy structure, which includes multiple evenly distributed and alternately gently connected convex and concave arc segments. The second surface has a flat planar structure. When the multiple heating blocks are in the closed state, the first surface of any heating block is in close contact with the second surface of the adjacent heating block.

[0064] The first drive motor 330 and the second drive motor 350 ensure that the stirring blades 320 and the multiple heating blocks rotate in the same direction, and the rotational speed of the stirring blades 320 is always greater than the rotational speed of the heating blocks. This allows the thrust generated by the stirring blades 320 on the raw material to smoothly enter the concave arc section of the first surface of the heating blocks. The concave arc section of the first surface forms a directional flow channel, which guides the raw material entering the concave arc section, causing the raw material to flow out of the first type of flow channel in a near-horizontal direction and stably. This suppresses the tendency of solid particles in the raw material to settle due to gravity and reduces the occurrence of sedimentation.

[0065] In one embodiment, during the reaction, the solubility of the raw materials decreases under the influence of temperature changes or concentration gradients, and they precipitate on the inner wall surface of the reaction shell 110, where the temperature is relatively low and the flow rate is slow. The precipitated crystals continuously adhere and accumulate, making the inner wall surface of the reaction shell 110 rough, increasing the risk of subsequent raw material adhesion, and causing cross-contamination between batches if not cleaned promptly. Based on this, the power source can also drive the heating block to move axially along the reaction shell 110.

[0066] Specifically, along the axis of the reaction shell 110, any two heating blocks that abut against each other are the first block 210 and the second block 220, respectively. Multiple first blocks 210 can surround and form a first chamber, and multiple second blocks 220 can surround and form a second chamber. The first chamber and the second chamber are coaxially distributed vertically along the axis of the reaction shell 110, with the first chamber located above and the second chamber located below.

[0067] The power source includes a first inclined plate 230, a second inclined plate 240, a mounting bracket 250, an upper threaded rod 260, a lower threaded rod 270, and a rotating motor 280.

[0068] Two first inclined plates 230 and two second inclined plates 240 are provided. The two first inclined plates 230 and the two second inclined plates 240 are arranged sequentially along the axial direction of the reaction shell 110. The two first inclined plates 230 are distributed above the reaction shell 110, and the two second inclined plates 240 are distributed below the reaction shell 110. The first inclined plates 230 and the two inclined plates 240 are coaxially slidably connected to the inner wall of the reaction shell 110.

[0069] Multiple first inclined rods are fixedly installed on the first inclined plate 230, evenly distributed around the circumference of the reaction shell 110. Multiple second inclined rods are fixedly installed on the second inclined plate 240, evenly distributed around the circumference of the reaction shell 110. The first and second inclined rods extend in opposite directions at a preset fixed inclination angle. The first inclined rods extend upwards, and the second inclined rods extend downwards, forming a symmetrical guide structure. Sliding rods are fixedly extended from both ends of each first block 210 and both ends of each second block 220 along the axial direction of the reaction shell 110. Each first and second inclined rod can be embedded in a groove on the side wall of the sliding rod. The sliding rods at the upper and lower ends of the first block 210 are slidably connected to a first inclined plate 230 via a first inclined rod, and both ends of the first block 210 can move on the first inclined plate 230 along the inclination direction of the first inclined rod. The sliding rods at the upper and lower ends of the second block 220 respectively pass through a second inclined rod and are slidably connected to a second inclined plate 240. The two ends of the second block 220 can move on the second inclined plate 240 along the inclination direction of the second inclined rod.

[0070] The mounting bracket 250 is located at the upper end of the reaction shell 110 and is coaxially rotatably connected to the inner wall of the reaction shell 110. The upper threaded rod 260 and the lower threaded rod 270 are evenly distributed circumferentially along the mounting bracket 250 and are both rotatably connected to it. Both the upper threaded rod 260 and the lower threaded rod 270 pass through the first inclined plate 230 and the second inclined plate 240 along the axial direction of the reaction shell 110. The upper threaded rod 260 is rotatably connected to the two first inclined plates 230 with the same thread direction, and the lower threaded rod 270 is rotatably connected to the two second inclined plates 240 with the same thread direction.

[0071] A first elastic element is provided between the first block 210 and the first inclined rod. The first elastic element is a first compression spring 211. One end of the first compression spring 211 is fixedly connected to the first block 210, and the other end is fixedly connected to the first inclined rod. The elastic force of the first compression spring 211 always causes the first block 210 to move closer to the inner wall of the reaction shell 110 along the radial direction of the reaction shell 110. A second elastic element is provided between the second block 220 and the second inclined rod. The second elastic element is a second compression spring 221. One end of the second compression spring 221 is fixedly connected to the second block 220, and the other end is fixedly connected to the second inclined rod. Its elastic force always causes the second block 220 to move closer to the inner wall of the reaction shell 110 along the radial direction of the reaction shell 110.

[0072] Multiple rotating motors 280 are configured, the number of which is equal to the total number of upper threaded rods 260 and lower threaded rods 270. Each rotating motor 280 is fixedly mounted on the mounting bracket 250 and connected to a corresponding upper threaded rod 260 or lower threaded rod 270, and is used to drive the corresponding upper threaded rod 260 or lower threaded rod 270 to rotate independently.

[0073] During the use of the equipment, the rotating motor 280 first drives the upper threaded rod 260 and the lower threaded rod 270 to rotate synchronously. Since the upper threaded rod 260 and the two first inclined plates 230 have the same thread connection direction, its rotation drives the two first inclined plates 230 to move synchronously downward along the axial direction of the reaction shell 110. Similarly, the rotation of the lower threaded rod 270 drives the two second inclined plates 240 to move synchronously upward along the axial direction of the reaction shell 110. The first block 210 moves downward with the first inclined plate 230, and the second block 220 moves upward with the second inclined plate 240, causing the first block 210 and the second block 220 to approach each other along the axial direction of the reaction shell 110. When the lower wall surface of the first block 210 and the upper wall surface of the second block 220 abut against each other, the upper threaded rod 260 and the lower threaded rod 270 continue to rotate. At this time, due to the mutual abutment and restriction of the axial movement of the first block 210 and the second block 220, the first block 210 is forced to slide along the first inclined rod, and the second block 220 is forced to slide along the second inclined rod. The first compression spring 211 and the second compression spring 221 are compressed, and the first block 210 and the second block 220 both move inward along the radial direction of the reaction shell 110. Finally, the first block 210 and the second block 220 both enter the closed state, forming a closed first chamber and a closed second chamber. At this time, the first block 210 and the second block 220 are energized for electric heating, and heating gas is introduced into the annular channel between the vent 120 and the reaction shell 110 to preliminarily heat the raw materials in the reaction chamber.

[0074] When the raw material temperature reaches the preset value, the rotating motor 280 drives the upper threaded rod 260 and the lower threaded rod 270 to rotate in opposite directions, causing the two first inclined plates 230 to move upward along the axial direction of the reaction shell 110 and the two second inclined plates 240 to move downward along the axial direction. The spring force of the first compression spring 211 is released, pushing the first block 210 to slide along the radial direction of the reaction shell 110 towards the inner wall of the reaction shell 110 on the first inclined rod; the spring force of the second compression spring 221 is released, pushing the second block 220 to slide along the radial direction of the reaction shell 110 towards the inner wall of the reaction shell 110 on the second inclined rod. When the first block 210 and the second block 220 are fully switched to the unfolded state, the outer walls of the first block 210 and the second block 220 are both in contact with the inner wall of the reaction shell 110.

[0075] When it is necessary to clean the crystals on the inner wall of the reaction shell 110, the rotating motor 280 drives the upper threaded rod 260 and the lower threaded rod 270 to rotate according to a preset program, causing the first block 210 and the second block 220 to reciprocate along the axial direction of the reaction shell 110. Under the elastic force of the first compression spring 211 and the second compression spring 221, the outer walls of the first block 210 and the second block 220 are in close contact with the inner wall of the reaction shell 110, and the crystals on the inner wall are scraped and cleaned by axial movement.

[0076] Meanwhile, the branch end of the rotating frame 340 is fixedly connected to the lower end of the second block 220. The second drive motor 350 drives the first block 210 and the second block 220 to rotate around the axis of the reaction shell 110 through the rotating frame 340, so that the cleaning action covers the entire circumferential area of ​​the inner wall of the reaction shell 110, ensuring the thoroughness of the cleaning.

[0077] This allows the first block 210 and the second block 220 to move stably back and forth along the axial direction of the reaction shell 110, and to rotate synchronously around the axis of the reaction shell 110. The outer walls of the first block 210 and the second block 220 can perform a full-circumferential and full-axial coverage scraping of the inner wall of the reaction shell 110, thoroughly removing the attached crystals and maintaining the stability of the heat conduction efficiency.

[0078] Furthermore, the two opposite sidewalls of the first block 210 are respectively configured as a first surface and a second surface, and the two opposite sidewalls of the second block 220 are also respectively configured as a first surface and a second surface. The first surface is a continuous wavy structure, which includes multiple evenly distributed and alternately gently connected convex arc segments and concave arc segments. The second surface is a flat planar structure.

[0079] When the first surfaces of the first block 210 and the second block 220 move relative to the inner wall of the reaction shell 110, the junction of the convex arc segment and the concave arc segment can directly penetrate into the interior of the crystal, destroying the overall structure of the crystal through mechanical force. This provides stronger crushing and peeling capabilities for large-area and high-strength attached crystals, significantly improving cleaning efficiency.

[0080] Meanwhile, during the cleaning process, the rotating motor 280 drives the upper threaded rod 260 and the lower threaded rod 270 to make the first block 210 and the second block 220 reciprocate along the axial direction of the reaction shell 110. This allows the first surfaces of the first block 210 and the second block 220 to generate an impact after penetrating the crystal, further breaking down the adhesion between the crystal and the inner wall of the reaction shell 110, and further enhancing the cleaning ability of the first block 210 and the second block 220 on the inner wall of the reaction shell 110.

[0081] Furthermore, the first surfaces of the first block 210 and the second block 220 are located in the mainstream area of ​​the raw material flow. The continuous flow of the raw material will create a high-frequency wash on the first surface, keeping it free of crystals. However, the second surfaces of the first block 210 and the second block 220 are located on the back side of the flow channel. The washing effect of the raw material flow on the second surface is weaker, which can cause the second surface to become an area where crystals easily adhere. Based on this, the power source can also drive adjacent first blocks 210 or second blocks 220 to produce relative axial movement. At the same time, the heating assembly also includes a limiting structure.

[0082] Specifically, any two adjacent first blocks 210 or any two adjacent second blocks 220 are respectively the first sub-block 212 and the second sub-block 214.

[0083] The limiting structure includes a limiting block 213 and a limiting groove 311. The limiting block 213 is a protruding structure and is fixedly installed on the end face of the first sub-block 212 facing the rotation shaft 310. The limiting groove 311 is an annular groove formed on the outer wall of the rotation shaft 310. The limiting groove 311 is adapted to the limiting block 213, and the limiting block 213 can be inserted and slide circumferentially along the limiting groove 311.

[0084] Sliding rods are fixedly extended from both ends of the first sub-block 212 and the second sub-block 214 along the axial direction of the reaction shell 110. Each sliding rod is slidably fitted with a sliding block 216. The sliding block 216 is a block-shaped structure with a through hole inside. The inner diameter of the through hole is clearance-fitted with the outer diameter of the sliding rod. The sliding block 216 can slide along the axial direction of the sliding rod. Each first inclined rod of the first inclined plate 230 and each second inclined rod of the second inclined plate 240 can be embedded in the side wall groove of a sliding block 216.

[0085] Two reset elastic elements are provided between each sliding block 216 and the sliding rod, and the reset elastic elements are configured as third compression springs 215. Both third compression springs 215 are sleeved on the sliding rod. One end of one third compression spring 215 is fixedly connected to the end face of the first sub-block 212 or the second sub-block 214, and the other end is fixedly connected to one end face of the sliding block 216; one end of the other third compression spring 215 is fixedly connected to the end of the sliding rod away from the first sub-block 212 or the second sub-block 214, and the other end is fixedly connected to the other end face of the sliding block 216. The two third compression springs 215 have the same elastic coefficient. In their natural state, the elastic forces of the two third compression springs 215 are balanced, always keeping the sliding block 216 in the middle position of the sliding rod.

[0086] When the first block 210 and the second block 220 are abutting each other and both are in a closed state, the limiting block 213 on each first sub-block 212 is fully embedded in the limiting groove 311 of the rotating shaft 310. The limiting groove 311 axially limits the limiting block 213, preventing the first sub-block 212 from moving axially along the reaction shell 110. At this time, if the two first inclined plates 230 or the two second inclined plates 240 continue to move axially, since the axial movement of the first sub-block 212 is completely restricted, the first inclined rod of the first inclined plate 230 or the second inclined rod of the second inclined plate 240 will drive the sliding block 216 on the first sub-block 212 to slide axially along the sliding rod. The movement of the sliding block 216 will compress one of the third compression springs 215 and stretch the other third compression spring 215, so that the first or second inclined rod and the first sub-block 212 form a relative movement along the axial direction of the reaction shell 110.

[0087] The second sub-block 214, adjacent to the first sub-block 212, is not provided with a limiting block 213. Its end face facing the rotation shaft 310 is in clearance fit with the outer wall of the rotation shaft 310, allowing the second sub-block 214 to slide freely along the outer wall of the rotation shaft 310. When the first inclined plate 230 or the second inclined plate 240 moves axially relative to the first sub-block 212, the first inclined rod or the second inclined rod applies an axial thrust to the second sub-block 214 through the sliding block 216, pushing the second sub-block 214 to slide relative to the rotation shaft 310 along the axis of the reaction shell 110, thereby realizing the axial relative movement between the first sub-block 212 and the second sub-block 214.

[0088] The axial relative movement of the first sub-block 212 and the second sub-block 214 will directly act on the first and second surfaces of the first sub-block 212 and the second sub-block 214 that abut against each other. The first surface of the first sub-block 212 and the second surface of the second sub-block 214 will generate axial sliding friction, which can scrape off the crystals attached to the second surface of the first sub-block 212 or the second sub-block 214.

[0089] After cleaning is completed, the first inclined plate 230 or the second inclined plate 240 will be reset, and the elastic force of the third compression spring 215 will push the sliding block 216 to be reset to the middle position of the sliding rod, and the first sub-block 212 and the second sub-block 214 will be restored to their initial adjacent positions.

[0090] As a result, the first sub-block 212 and the second sub-block 214 move relative to each other and rub against each other along the axial direction of the reaction shell 110, thereby scraping off the crystals on the second surface, ensuring that there are no crystal residues on the second surface, and avoiding blockage of the flow channel and obstruction of heat conduction.

[0091] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An electrically heated reactor with optimized stirring efficiency, characterized in that, include: A reaction shell, wherein a reaction chamber is formed inside the reaction shell; A ventilator is coaxially and fixedly sleeved on the outer wall of the reaction shell, and a channel for introducing heating substances is formed between the ventilator and the reaction shell. A heating assembly includes multiple heating blocks and a power source. The multiple heating blocks are located within the reaction chamber for heating the raw materials. The multiple heating blocks have a closed state and an extended state. When the multiple heating blocks are in the closed state, they are close together to form a closed chamber, and a heating area for the raw materials is formed between the outer walls of the multiple heating blocks and the inner wall of the reaction chamber. When the multiple heating blocks are in the extended state, they are spaced apart to allow the raw materials to flow between two adjacent heating blocks. The power source is used to drive the multiple heating blocks to switch between the closed state and the unfolded state; the power source includes a first inclined plate, a second inclined plate, and a threaded rod. The first inclined plate and the second inclined plate are distributed along the axial direction of the reaction shell and are both slidably connected to the inner wall of the reaction shell. The first inclined plate and the second inclined plate extend in opposite directions at a preset inclination angle; one end of each heating block is slidably connected to the first inclined plate and the other end is slidably connected to the second inclined plate; the threaded rod is threaded to the first inclined plate and the second inclined plate in opposite directions, and the threaded rod is used to drive the first inclined plate and the second inclined plate to move away from each other or closer to each other, so as to drive the multiple heating blocks to move radially along the reaction shell; The stirring assembly is used to stir the raw materials when the heating block is in the deployed state.

2. The electrically heated reactor with optimized stirring efficiency according to claim 1, characterized in that, The stirring assembly includes a rotating shaft, multiple stirring blades, and a drive structure. The rotating shaft is coaxially rotatably connected to the reaction shell. The multiple stirring blades are evenly spaced along the axial direction of the rotating shaft and are coaxially fixedly connected to the rotating shaft. The driving structure is used to drive the rotating shaft to rotate; When the heating blocks are in the deployed state, the rotation of the stirring blades can drive the raw material through the gap between adjacent heating blocks.

3. The electrically heated reactor with optimized stirring efficiency according to claim 2, characterized in that, The drive structure can also drive the heating block to rotate around the axis of the reaction shell.

4. The electrically heated reactor with optimized stirring efficiency according to claim 2, characterized in that, The two opposite sidewalls of the heating block are a wavy first surface and a flat second surface, respectively. When the multiple heating blocks are in the closed state, the first surface of any heating block abuts against the second surface of the adjacent heating block.

5. The electrically heated reactor with optimized stirring efficiency according to claim 4, characterized in that, The power source can also drive the heating block to move axially along the reaction shell.

6. The electrically heated reactor with optimized stirring efficiency according to claim 5, characterized in that, The power source can also drive adjacent heating blocks to move relative to each other along the axial direction of the reaction shell.

7. The electrically heated reactor with optimized stirring efficiency according to claim 6, characterized in that, Along the axis of the reaction shell, any two heating blocks that abut against each other are respectively a first block and a second block; a plurality of first blocks can surround to form a first chamber, and a plurality of second blocks can surround to form a second chamber, the first chamber and the second chamber being distributed along the axis of the reaction shell; The power source includes a first inclined plate, a second inclined plate, an upper threaded rod, and a lower threaded rod. There are two of each of the first and second inclined plates. The two first inclined plates and the two second inclined plates are arranged sequentially along the axial direction of the reaction shell and are slidably connected to the inner wall of the reaction shell. The first inclined plate and the second inclined plate extend in opposite directions according to a preset inclination angle. The two ends of the first block are slidably connected to a first inclined plate; the two ends of the second block are slidably connected to a second inclined plate; the upper threaded rod is rotatably connected to two first inclined plates with the same thread; the lower threaded rod is rotatably connected to two second inclined plates with the same thread.

8. The electrically heated reactor with optimized stirring efficiency according to claim 7, characterized in that, A first elastic element is provided between the first block and the first inclined plate, and the elastic force of the first elastic element always keeps the first block away from the axis of the reaction shell; a second elastic element is provided between the second block and the second inclined plate, and the elastic force of the second elastic element always keeps the second block away from the axis of the reaction shell.

9. The electrically heated reactor with optimized stirring efficiency according to claim 7, characterized in that, The heating assembly further includes a limiting structure. Along the circumference of the reaction shell, any two adjacent first blocks or second blocks are respectively a first sub-block and a second sub-block. The first sub-block and the second sub-block can move relative to the first inclined plate or the second inclined plate along the axial direction of the reaction shell. The limiting structure is used to restrict the first inclined plate or the second inclined plate from driving the first sub-block to move along the axis of the reaction shell.

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