Stirring system of high-pressure reaction kettle

Abstract

The utility model relates to the technical field of chemical equipment, and discloses a stirring system of a high-pressure reaction kettle, a plurality of partition plates are sequentially arranged in the high-pressure reaction kettle along the flowing direction of materials, an inner cavity of the high-pressure reaction kettle is divided into a plurality of compartments, and the upper parts of every two adjacent compartments are communicated; the stirring devices and the compartments are arranged in a one-to-one correspondence mode, each stirring device comprises a first driving assembly, a rotating shaft assembly and two stirring paddle assemblies, the rotating shaft assemblies are rotationally arranged on the high-pressure reaction kettle along the axis in the vertical direction, and the lower ends of the rotating shaft assemblies extend into the corresponding compartments; the two stirring paddle assemblies are arranged on the rotating shaft assembly at intervals in the vertical direction, the first driving assembly is connected with the upper end of the rotating shaft assembly so as to drive the two stirring paddle assemblies to rotate oppositely through the rotating shaft assembly, the upper stirring paddle assembly is close to the liquid level, and the lower stirring paddle assembly reciprocates in the vertical direction; sufficient stirring is performed at different depths, so that the stirring effect and the reaction efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical equipment technical field especially relates to a high pressure reation kettle stirring system. BACKGROUND

[0002] With the vigorous development of new energy automobile industry of our country and the gradual exhaustion of high-quality nickel mine, cobalt mine resources of our country, the demand of industry to nickel, cobalt, manganese metal in new energy ternary material is rising, and the development of reserves of large but low nickel industrial grade laterite nickel ore gradually becomes the focus of industry. The hydrometallurgy route of sulfuric acid leaching under high temperature and high pressure is one of the mainstream smelting processes of laterite nickel ore at present, and the high-pressure reaction kettle is the main equipment for smelting laterite nickel ore.

[0003] In the prior art, the reaction kettle for high-pressure leaching includes a kettle body and a stirring mechanism, wherein the stirring mechanism includes stirring blades, a stirring driving member and a plurality of pressure detection members. In order to reasonably control the process of the reaction kettle, each pressure detection member is correspondingly arranged on each stirring blade and is used to detect the pressure on the blade surface of the corresponding stirring blade during rotation.

[0004] However, the stirring effect of the stirring mechanism in the above high-pressure reaction kettle is poor, and the ore pulp, sulfuric acid and steam and other materials in the reaction kettle cannot be fully and reasonably stirred, resulting in low reaction efficiency, and the working efficiency of the high-pressure reaction kettle is difficult to meet the use. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of high-pressure reaction kettle stirring system, can be fully stirred, and improve stirring effect and reaction efficiency.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] High-pressure reaction kettle stirring system, characterized in that, it includes:

[0008] High-pressure reaction kettle, multiple partitions are sequentially arranged in the high-pressure reaction kettle along the flow direction of material, multiple partitions divide the cavity in the high-pressure reaction kettle to form multiple compartments, and the upper portions of adjacent two compartments are communicated.

[0009] A plurality of stirring devices, a plurality of said stirring devices are arranged one-to-one with a plurality of said compartments, each said stirring device comprises a first driving assembly, a rotating shaft assembly and two stirring paddle assemblies, said rotating shaft assembly is arranged along the axis in the vertical direction and is arranged in said high-pressure reactor, and the lower end of said rotating shaft assembly extends into the corresponding said compartment; two said stirring paddle assemblies are arranged on said rotating shaft assembly in the vertical direction, the lower said stirring paddle assembly reciprocates in the vertical direction, said first driving assembly is connected with the upper end of said rotating shaft assembly, so as to drive two said stirring paddle assemblies to rotate in opposite directions through said rotating shaft assembly.

[0010] As an optional technical solution of the high-pressure reactor stirring system, said rotating shaft assembly comprises a first rotating shaft, a connecting sleeve and a second rotating shaft, said first rotating shaft is arranged in rotation in said high-pressure reactor, said first rotating shaft is provided with an installation channel extending along its axial direction, said connecting sleeve is arranged in rotation in said installation channel, the inner periphery of said connecting sleeve is provided with an inner spline, the outer periphery of said second rotating shaft is provided with an outer spline, said second rotating shaft is arranged in sliding in said connecting sleeve and is matched with said connecting sleeve spline; one of said stirring paddle assemblies is arranged at the lower end of said first rotating shaft, and the other said stirring paddle assembly is arranged at the lower end of said second rotating shaft; said first driving assembly is connected with said first rotating shaft and said connecting sleeve to drive said first rotating shaft and said connecting sleeve to rotate in opposite directions.

[0011] As an optional technical solution of the high-pressure reactor stirring system, said first driving assembly comprises a mounting seat, a driving bevel gear, a first driven bevel gear, a second driven bevel gear and a driving motor, said mounting seat is fixedly arranged in said high-pressure reactor, said driving bevel gear is arranged in rotation along the axis in the horizontal direction in said mounting seat; said first driven bevel gear is connected with the upper end of said first rotating shaft, said second driven bevel gear is connected with the upper end of said connecting sleeve, said first driven bevel gear, said driving bevel gear and said second driven bevel gear are arranged in sequence in the vertical direction, said driving bevel gear is meshed with said first driven bevel gear and said second driven bevel gear respectively, the main shaft of said driving motor is connected with said driving bevel gear.

[0012] As an optional technical scheme of the high-pressure reaction kettle stirring system, the high-pressure reaction kettle stirring system further comprises a second driving assembly, the second driving assembly comprises a cylinder, a piston piece, a gas source device and a valve, the cylinder is arranged on the high-pressure reaction kettle and above the second rotating shaft, the cylinder is provided with a piston cavity, a first gas inlet, an exhaust port and a second gas inlet; the piston piece is slidingly arranged in the piston cavity, and the lower end of the piston piece extends out of the piston cavity and is connected with the upper end of the second rotating shaft, the piston piece divides the piston cavity into a spaced first chamber and a second chamber in the vertical direction, the first gas inlet and the exhaust port are communicated with the first chamber, the second gas inlet is communicated with the second chamber, the first gas inlet is connected with the gas source device, the valve is arranged at the exhaust port, and the second gas inlet is communicated with the high-pressure reaction kettle.

[0013] As an optional technical scheme of the high-pressure reaction kettle stirring system, the second driving assembly further comprises a detection assembly and a control device, the detection assembly is used for detecting the stroke of the piston piece, and the control device is electrically connected with the gas source device, the valve and the detection assembly, and the control device is used for controlling the start and stop of the gas source device and the valve according to the detection result.

[0014] As an optional technical scheme of the high-pressure reaction kettle stirring system, each stirring paddle assembly comprises a plurality of stirring blades, and the plurality of stirring blades are arranged in the circumferential direction of the rotating shaft assembly and are fixedly arranged on the rotating shaft assembly.

[0015] As an optional technical scheme of the high-pressure reaction kettle stirring system, the stirring blade is arranged to be inclined to the horizontal direction.

[0016] As an optional technical scheme of the high-pressure reaction kettle stirring system, the width of the stirring blade gradually decreases in the direction away from the rotating shaft assembly.

[0017] As an optional technical scheme of the high-pressure reaction kettle stirring system, the stirring blade is arranged in an arc shape.

[0018] As an optional technical scheme of the high-pressure reaction kettle stirring system, the surface of the stirring blade is coated with an anti-fouling coating, and the material of the anti-fouling coating is nano ceramic.

[0019] The utility model discloses the beneficial effects of:

[0020] The high-pressure reaction kettle stirring system provided by the utility model comprises a high-pressure reaction kettle and multiple stirring devices, multiple partitions are sequentially arranged in the high-pressure reaction kettle along the flow direction of materials, the multiple partitions separate the cavity in the high-pressure reaction kettle to form multiple compartments, and the upper parts of two adjacent compartments are communicated; the multiple stirring devices are arranged in one-to-one correspondence with the multiple compartments, each stirring device comprises a first driving assembly, a rotating shaft assembly and two stirring paddle assemblies, the rotating shaft assembly is rotationally arranged in the high-pressure reaction kettle along an axis in the vertical direction, and the lower end of the rotating shaft assembly extends into the corresponding compartment; the two stirring paddle assemblies are arranged on the rotating shaft assembly in the vertical direction, wherein the lower stirring paddle assembly reciprocates in the vertical direction, the first driving assembly is connected with the upper end of the rotating shaft assembly to drive the two stirring paddle assemblies to relatively and reversely rotate through the rotating shaft assembly; the two stirring paddle assemblies are arranged in the vertical direction, the upper stirring paddle assembly is close to the liquid surface and can stir the materials in the liquid surface part, and the lower stirring paddle assembly can reciprocate up and down while rotating and can stir the remaining materials except the materials in the liquid surface part, that is, the materials at different depths, so that the stirring capacity is improved, the uniformity of stirring is ensured, and the materials in the high-pressure reaction kettle can be fully stirred to improve the reaction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a working structure schematic view of the high-pressure reaction kettle stirring system provided by the utility model specific embodiment;

[0022] Figure 2 is Figure 1 a left view sectional view;

[0023] Figure 3 is a front view of the stirring device and the second driving assembly of the high-pressure reaction kettle stirring system provided by the utility model specific embodiment;

[0024] Figure 4 is a partial sectional view of the stirring device of the high-pressure reaction kettle stirring system provided by the utility model specific embodiment;

[0025] Figure 5 is a partial sectional view of the second driving assembly of the high-pressure reaction kettle stirring system provided by the utility model specific embodiment;

[0026] Figure 6 is a three-dimensional schematic view of the stirring paddle assembly of the high-pressure reaction kettle stirring system provided by the utility model specific embodiment;

[0027] Figure 7It is the front view of the stirring paddle assembly of the high-pressure reaction kettle stirring system provided by the specific embodiment of the utility model.

[0028] In the drawings:

[0029] 1, high-pressure reaction kettle; 11, partition; 12, compartment;

[0030] 2, stirring device; 21, rotating shaft assembly; 211, first rotating shaft; 212, connecting sleeve; 213, second rotating shaft; 22, stirring paddle assembly; 221, stirring blade; 23, first driving assembly; 231, driving bevel gear; 232, first driven bevel gear; 233, second driven bevel gear; 234, driving motor;

[0031] 3, second driving assembly; 31, cylinder body; 311, piston cavity; 312, first air inlet; 313, exhaust port; 314, second air inlet; 32, piston piece. Specific embodiment

[0032] The utility model will be further explained in detail in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, and not limited to the utility model. In addition, it should be pointed out that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all the structures.

[0033] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; It can be mechanically connected, or it can be electrically connected; It can be directly connected, or it can be indirectly connected through an intermediate medium; It can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] In the description of the present embodiment, the terms "upper", "lower", "right", "left" and the like orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] It should be noted that the high-pressure reaction kettle stirring system described in the present application is used for, but not limited to, the example of laterite nickel ore and the like in the background art, and the principle of the high-pressure reaction kettle stirring system applied to other types of product processing is substantially the same as that applied to laterite nickel ore, which will not be described here.

[0037] As shown in Figures 1 to 7 The utility model discloses a high-pressure reaction kettle stirring system, including high-pressure reaction kettle 1 and a plurality of stirring device 2, a plurality of baffle 11 are sequentially arranged in high-pressure reaction kettle 1 along the flow direction of material, a plurality of baffle 11 divide the cavity in high-pressure reaction kettle 1 and form a plurality of compartments 12, and the upper portion of adjacent two compartments 12 is communicated, a plurality of stirring device 2 are set up one by one with a plurality of compartments 12, and each stirring device 2 includes first drive assembly 23, shaft assembly 21 and two stirring paddle assembly 22, shaft assembly 21 is rotationally arranged in high-pressure reaction kettle 1 along the axis in vertical direction, and the lower end of shaft assembly 21 extends into the corresponding compartment 12, two stirring paddle assembly 22 are spaced apart on shaft assembly 21 along the vertical direction, wherein the stirring paddle assembly 22 below reciprocates along the vertical direction, first drive assembly 23 is connected with the upper end of shaft assembly 21 to drive two stirring paddle assembly 22 relative reverse rotation through shaft assembly 21, and the rotating direction of two stirring paddle assembly 22 is reversely arranged, which can further improve the turbulence effect.

[0038] In the present embodiment, please refer to Figures 1 to 3 , shaft assembly 21 is rotationally installed in high-pressure reaction kettle 1 along the axis in vertical direction and the lower end extends into the corresponding compartment 12, two stirring paddle assembly 22 are spaced apart along the vertical direction, the stirring paddle assembly 22 above is close to the liquid level, which can stir the material of the liquid surface part, and the stirring paddle assembly 22 below can reciprocate up and down while rotating, which can stir the remaining material except the liquid surface part, i.e. the material of different depths, improve the stirring capacity, ensure the uniformity of stirring, and at the same time of the up and down reciprocating movement of stirring paddle assembly 22, the material can be disturbed in the vertical direction, which also plays the purpose of stirring. By setting two stirring paddle assembly 22 to stir reversely, the stirring effect can be improved, the material in high-pressure reaction kettle 1 can be fully stirred, and the reaction efficiency is improved.

[0039] In the embodiment, the high-pressure reaction kettle 1 is in a cylindrical shape and is horizontally arranged, and opposite ends of the high-pressure reaction kettle 1 are a feeding end and a discharging end, which are respectively used for feeding and discharging materials. The rotating shaft assembly 21 is vertically arranged on a top sidewall of the high-pressure reaction kettle 1, and a lower end of the rotating shaft assembly 21 extends into the corresponding compartment 12. The two stirring paddle assemblies 22 are arranged on the part of the rotating shaft assembly 21 located in the compartment 12. An upper end of the rotating shaft assembly 21 is located outside the high-pressure reaction kettle 1 and is connected with the first driving assembly 23, so that the rotating shaft assembly 21 is driven to rotate by the first driving assembly 23, and then the two stirring paddle assemblies 22 are driven to rotate by the rotating shaft assembly 21, thereby realizing the stirring of the materials.

[0040] In the embodiment, for the convenience of description, the stirring paddle assembly 22 located at the upper part of the two stirring paddle assemblies 22 is referred to as a first stirring paddle assembly, and the stirring paddle assembly 22 located at the lower part is referred to as a second stirring paddle assembly.

[0041] In the embodiment, the height of the partition plate 11 is less than the depth of the reaction kettle, so that the upper ends of the adjacent compartments 12 are communicated. The height of the partition plate 11 is equal to the height of the materials in the compartment 12. The height of the first stirring paddle assembly is slightly lower than the height of the partition plate 11, so that the first stirring paddle assembly can be immersed in the materials and close to the liquid surface, thereby being capable of stirring the materials at the liquid surface. The second stirring paddle assembly can reciprocate between the first stirring paddle assembly and the bottom of the compartment 12, thereby being capable of stirring the materials at the remaining depth, and ensuring the uniform mixing of the materials.

[0042] In one of the embodiments, referring to Figures 3 to 4 , the rotating shaft assembly 21 comprises a first rotating shaft 211, a connecting sleeve 212 and a second rotating shaft 213. The first rotating shaft 211 is rotatably arranged in the high-pressure reaction kettle 1, and the first rotating shaft 211 is provided with an installation channel extending along the axial direction. The connecting sleeve 212 is rotatably arranged in the installation channel, and the inner periphery of the connecting sleeve 212 is provided with internal splines. The outer periphery of the second rotating shaft 213 is provided with external splines, and the second rotating shaft 213 is slidably arranged in the connecting sleeve 212 and is splined with the connecting sleeve 212. One of the stirring paddle assemblies 22 is arranged at the lower end of the first rotating shaft 211, and the other stirring paddle assembly 22 is arranged at the lower end of the second rotating shaft 213. The first driving assembly 23 is connected with the first rotating shaft 211 and the connecting sleeve 212, so as to drive the first rotating shaft 211 and the connecting sleeve 212 to rotate in opposite directions.

[0043] In the embodiment, the first rotating shaft 211 is rotatably arranged on the upper side wall of the high-pressure reaction kettle 1 in the vertical direction, the upper end of the first rotating shaft 211 is located outside the high-pressure reaction kettle 1, the lower end of the first rotating shaft 211 is located in the corresponding compartment 12, and the first stirring paddle assembly is fixedly arranged on the lower end of the first rotating shaft 211, that is, the first stirring paddle assembly is driven to rotate by the first rotating shaft 211. The first rotating shaft 211 is further provided with a mounting channel coaxial with the first rotating shaft 211, the connecting sleeve 212 is rotatably arranged in the mounting channel in the vertical direction, and the upper end of the connecting sleeve 212 extends out of the mounting channel, that is, the connecting sleeve 212 can rotate relative to the first rotating shaft 211. The connecting sleeve 212 is provided with an internal spline, the diameter of the second rotating shaft 213 is matched with the internal diameter of the connecting sleeve 212, and the second rotating shaft 213 is circumferentially provided with an external spline. The second rotating shaft 213 is slidably arranged in the connecting sleeve 212 in the vertical direction, the upper end of the second rotating shaft 213 is located outside the high-pressure reaction kettle 1, and the lower end of the second rotating shaft 213 is located in the compartment 12. The second stirring paddle assembly is fixedly arranged on the lower end of the second rotating shaft 213, and is driven to reciprocate in the vertical direction by the second rotating shaft 213 arranged in the vertical direction. The spline connection between the connecting sleeve 212 and the second rotating shaft 213 can drive the second rotating shaft 213 to rotate along the axis in the vertical direction when the connecting sleeve 212 rotates, so as to drive the second stirring paddle assembly to rotate.

[0044] Specifically, the mounting channel includes a first connecting section and a second connecting section connected in sequence from top to bottom, the diameter of the first connecting section is matched with the diameter of the connecting sleeve 212, the connecting sleeve 212 is rotatably arranged in the first connecting section, and the upper end of the connecting sleeve 212 extends out of the first connecting section. The diameter of the second connecting section is matched with the diameter of the second rotating shaft 213, the second rotating shaft 213 penetrates the connecting sleeve 212 and the second connecting section, and the two ends of the second rotating shaft 213 extend out of the connecting sleeve 212 and the second connecting section.

[0045] Further, a sealing member is arranged between the second connecting section and the second rotating shaft 213.

[0046] In one of the embodiments, referring to Figures 3 to 4 , the first driving assembly 23 includes a mounting seat, a driving bevel gear 231, a first driven bevel gear 232, a second driven bevel gear 233, and a driving motor 234. The mounting seat is fixedly arranged on the high-pressure reaction kettle 1, and the driving bevel gear 231 is rotatably arranged on the mounting seat in the horizontal direction. The first driven bevel gear 232 is connected with the upper end of the first rotating shaft 211, and the second driven bevel gear 233 is connected with the upper end of the connecting sleeve 212. The first driven bevel gear 232, the driving bevel gear 231, and the second driven bevel gear 233 are arranged in sequence in the vertical direction. The driving bevel gear 231 is engaged with the first driven bevel gear 232 and the second driven bevel gear 233 respectively, and the main shaft of the driving motor 234 is connected with the driving bevel gear 231.

[0047] In the embodiment, the mounting seat is mounted on the top of the high-pressure reaction kettle 1, the driving motor 234 and the driving bevel gear 231 are mounted on the mounting seat, the first driven bevel gear 232 is connected with the upper end of the first rotating shaft 211, the second driven bevel gear 233 is connected with the upper end of the connecting sleeve 212, the first driven bevel gear 232 and the second driven bevel gear 233 are arranged in a vertical direction, the driving bevel gear 231 is located between the first driven bevel gear 232 and the second driven bevel gear 233 and meshes with each other, when the driving motor 234 drives the driving bevel gear 231 to rotate, the first driven bevel gear 232 and the second driven bevel gear 233 can be simultaneously driven to rotate, and the rotating directions of the first driven bevel gear 232 and the second driven bevel gear 233 are opposite, so that the rotating directions of the two stirring paddle assemblies 22 are opposite.

[0048] In one of the embodiments, referring to Figures 3 to 5 , the high-pressure reaction kettle stirring system further comprises a second driving assembly 3, the second driving assembly 3 comprises a cylinder body 31, a piston 32, a gas source device and a valve, the cylinder body 31 is arranged on the high-pressure reaction kettle 1 and above the second rotating shaft 213, the cylinder body 31 is provided with a piston cavity 311, a first air inlet 312, an exhaust port 313 and a second air inlet 314; the piston 32 is slidingly arranged in the piston cavity 311, and the lower end of the piston 32 extends out of the piston cavity 311 and is connected with the upper end of the second rotating shaft 213, the piston 32 divides the piston cavity 311 into a first chamber and a second chamber in a vertical direction, the first air inlet 312 and the exhaust port 313 are communicated with the first chamber, the second air inlet 314 is communicated with the second chamber, the first air inlet 312 is connected with the gas source device, the valve is arranged on the exhaust port 313, and the second air inlet 314 is communicated with the high-pressure reaction kettle 1.

[0049] In the embodiment, in order to drive the second rotating shaft 213 to reciprocate along the vertical direction, a second driving assembly 3 is further arranged, the second driving assembly 3 is connected with the second rotating shaft 213 to drive the second rotating shaft 213 to slide along the vertical direction, specifically, the second driving assembly 3 comprises a cylinder 31, a piston 32, a gas source device and a valve, the cylinder 31 has a piston cavity 311 extending along the vertical direction, and the lower end of the cylinder 31 is provided with a through hole communicating with the piston cavity 311, the piston 32 comprises a piston head and a piston rod, the diameter of the piston head is matched with the piston cavity 311, the piston head is slidingly installed in the piston cavity 311 and sealingly cooperates with the side wall of the piston cavity 311, the piston cavity 311 divides the piston cavity 311 into a first chamber and a second chamber, the second chamber communicates with the through hole, one end of the piston rod extends into the second chamber from the through hole and is connected with the piston head, and the piston rod sealingly cooperates with the through hole, the other end of the piston rod is connected with the upper end of the second rotating shaft 213, the gas source device communicates with the first chamber through a first gas inlet 312, and the gas source device is used for conveying high-pressure gas into the first chamber, and the valve is arranged at an exhaust hole and is used for controlling the opening and closing of the exhaust hole 313, and the second chamber communicates with the cavity in the high-pressure reaction kettle 1 through a second gas inlet 314.

[0050] In specific use, since the high-pressure reaction kettle 1 is in a high-pressure state during the working process, the second chamber is also in a high-pressure state due to the communication between the second chamber and the high-pressure reaction kettle 1, when the gas source device is not working and the valve opens the exhaust hole 313, the high-pressure gas in the second chamber pushes the piston head to move upwards, thereby driving the second rotating shaft 213 to move upwards, when the movement reaches a certain distance, the gas source device works to convey high-pressure gas into the first chamber, the valve closes the exhaust hole 313, and the pressure in the first chamber rises, when the pressure in the first chamber is greater than that in the second chamber, the piston head is pushed to move downwards, thereby driving the second rotating shaft 213 to move downwards, and the above operation is repeated to drive the second rotating shaft 213 to reciprocate.

[0051] It can be understood that the volume of the second chamber is much smaller than that of the high-pressure reaction kettle 1, and therefore the volume change of the second chamber has negligible effect on the high-pressure reaction kettle 1, and it can be considered that the pressure in the second chamber and the high-pressure reaction kettle 1 remains constant and is always in a high-pressure state.

[0052] In the embodiment, the gas source device can be a compressor or a supercharger and the like, and the valve is an electromagnetic valve.

[0053] In one of the embodiments, the second driving assembly 3 further comprises a detection assembly and a control device, the detection assembly is used for detecting the stroke of the piston 32, the control device is electrically connected with the gas source device, the valve and the detection assembly, and the control device is used for controlling the start and stop of the gas source device and the valve according to the detection result.

[0054] Specifically, the control device can control the start and stop of the gas source device, and the control device can also control the opening and closing of the valve. When the detection assembly detects that the piston 32 moves to the lowermost position, the control device controls the gas source device to be closed and the valve to be opened. When the piston 32 moves to the uppermost position, the control device controls the gas source device to be opened and the valve to be closed. By controlling the gas source device and the valve, the pressure in the first chamber can be controlled, thereby achieving the reciprocating movement of the piston and improving the automation degree.

[0055] In the embodiment, the detection assembly includes two detection members and a trigger member. The two detection members are arranged in the vertical direction and are spaced apart from each other in the high-pressure reaction kettle 1. The trigger member is arranged on the piston rod and is located between the two detection members. When the piston rod drives the trigger member to move, the trigger member can trigger one of the two detection members, thereby detecting the piston rod. The distance between the two detection members is the movement stroke of the piston rod.

[0056] In the embodiment, the detection member is a travel switch or a proximity switch, and the trigger member is a component matched with the travel switch or the proximity switch.

[0057] In one of the embodiments, referring to Figures 6 to 7 Each stirring paddle assembly 22 includes a plurality of stirring blades 221. The plurality of stirring blades 221 are arranged in the circumferential direction of the rotating shaft assembly 21 and are fixed to the rotating shaft assembly 21.

[0058] The two stirring paddle assemblies 22 can be the same type of stirring paddle assembly 22 or different types of stirring paddle assembly 22, which is not limited herein. In the embodiment, the first stirring paddle assembly is a dispersion disc type stirring paddle assembly 22, which can disperse the material in the tangential direction. The stirring blades 221 of the second stirring paddle assembly are provided with a connecting shaft, which is fixedly connected with the second rotating shaft 213 and is gradually inclined upward in the direction away from the second rotating shaft 213, so that the stirring blades 221 are inclined to the horizontal direction and the stirring blades 221 themselves are also inclined to the horizontal direction. In this way, when the second stirring paddle assembly rotates, the material can be brought to float, and the mixing efficiency can be improved in cooperation with the first stirring paddle assembly, thereby promoting the reaction process.

[0059] In one of the embodiments, referring to Figures 6 to 7 The width of the stirring blades 221 gradually decreases in the direction away from the rotating shaft assembly 21.

[0060] In the embodiment, since the high-pressure reaction kettle 1 has a columnar structure extending in the horizontal direction, in order to avoid interference between the second stirring paddle assembly and the high-pressure reaction kettle 1 when the second stirring paddle assembly moves downward, the width of the stirring blades 221 gradually decreases in the direction away from the rotating shaft assembly 21.

[0061] In one embodiment, referring to Figures 6 to 7 The stirring blade 221 is arranged in an arc shape, which is beneficial to further improve the stirring effect.

[0062] In one embodiment, the stirring blade 221 is coated with an anti-fouling coating, which can prevent the material from fouling on the stirring blade 221. The material of the anti-fouling coating can be nano ceramic.

[0063] In this embodiment, the nano ceramic has strong acid and alkali resistance, high temperature resistance, corrosion resistance, wear resistance and high thermal conductivity. After the anti-fouling coating is coated and solidified on the surface of the stirring blade 221, the surface energy of the metal material can be effectively reduced. When the fluid medium flows through the special microstructure on the surface of the anti-fouling coating, a special turbulent layer can be formed, thereby effectively preventing the stirring blade 221 from fouling.

[0064] The working principle of the high-pressure reaction kettle stirring system is as follows: the driving motor 234 drives the driving bevel gear 231 to rotate, and simultaneously drives the first driven bevel gear 232 and the second driven bevel gear 233 to rotate. The first driven bevel gear 232 drives the first rotating shaft 211 and the first stirring paddle assembly to rotate, and the second driven bevel gear 233 drives the connecting sleeve 212, the second rotating shaft 213 and the second stirring paddle assembly to rotate. At the same time, the control device controls the gas source device to stop working and controls the valve to open the exhaust port 313. The high-pressure gas in the second chamber pushes the piston 32 to move upwards, thereby driving the second rotating shaft 213 to move upwards. When the piston 32 moves to a certain distance, the control device controls the gas source device to start working, and high-pressure gas is delivered into the first chamber. The valve is closed to control the exhaust port 313, and the pressure in the first chamber is increased. When the pressure in the first chamber is greater than the pressure in the second chamber, the piston head is pushed to move downwards, thereby driving the second rotating shaft 213 to move downwards. The above operation is repeated, and the second rotating shaft 213 reciprocates.

[0065] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the utility model. Here, it is unnecessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A high pressure reactor stirring system, characterized by, The utility model relates to a high pressure reactor, which comprises: a high pressure reactor (1), a plurality of baffles (11) are sequentially arranged in the high pressure reactor (1) along the flow direction of materials, the plurality of baffles (11) divide the cavity in the high pressure reactor (1) into a plurality of compartments (12), and the upper parts of two adjacent compartments (12) are communicated; a plurality of stirring devices (2) are arranged in one-to-one correspondence with the plurality of compartments (12), each stirring device (2) comprises a first driving assembly (23), a rotating shaft assembly (21) and two stirring paddle assemblies (22), the rotating shaft assembly (21) is arranged in the high pressure reactor (1) along the axis in the vertical direction, and the lower end of the rotating shaft assembly (21) extends into the corresponding compartment (12); two stirring paddle assemblies (22) are arranged on the rotating shaft assembly (21) in the vertical direction, the lower stirring paddle assembly (22) reciprocates in the vertical direction, and the first driving assembly (23) is connected with the upper end of the rotating shaft assembly (21) to drive the two stirring paddle assemblies (22) to rotate in opposite directions through the rotating shaft assembly (21).

2. The high pressure reactor vessel stirring system of claim 1, wherein, The rotating shaft assembly (21) comprises a first rotating shaft (211), a connecting sleeve (212) and a second rotating shaft (213), the first rotating shaft (211) is rotatably arranged in the high pressure reactor (1), the first rotating shaft (211) is provided with an installation channel extending along the axial direction, the connecting sleeve (212) is rotatably arranged in the installation channel, the inner periphery of the connecting sleeve (212) is provided with internal splines, the outer periphery of the second rotating shaft (213) is provided with external splines, the second rotating shaft (213) is slidably arranged in the connecting sleeve (212) and is splined with the connecting sleeve (212); one of the stirring paddle assemblies (22) is arranged at the lower end of the first rotating shaft (211), and the other stirring paddle assembly (22) is arranged at the lower end of the second rotating shaft (213); the first driving assembly (23) is connected with the first rotating shaft (211) and the connecting sleeve (212) to drive the first rotating shaft (211) and the connecting sleeve (212) to rotate in opposite directions.

3. The high pressure reactor vessel stirring system of claim 2, wherein, The first driving assembly (23) comprises a mounting seat, a driving bevel gear (231), a first driven bevel gear (232), a second driven bevel gear (233) and a driving motor (234), the mounting seat is fixedly arranged on the high-pressure reaction kettle (1), the driving bevel gear (231) is rotationally arranged on the mounting seat along an axis in the horizontal direction; the first driven bevel gear (232) is connected with the upper end of the first rotating shaft (211), the second driven bevel gear (233) is connected with the upper end of the connecting sleeve (212), the first driven bevel gear (232), the driving bevel gear (231) and the second driven bevel gear (233) are sequentially arranged in the vertical direction, the driving bevel gear (231) is engaged with the first driven bevel gear (232) and the second driven bevel gear (233) respectively, and the main shaft of the driving motor (234) is connected with the driving bevel gear (231).

4. The high pressure reactor vessel stirring system of claim 2, wherein, The high-pressure reaction kettle stirring system further comprises a second driving assembly (3), the second driving assembly (3) comprises a cylinder body (31), a piston member (32), a gas source device and a valve, the cylinder body (31) is arranged on the high-pressure reaction kettle (1) and above the second rotating shaft (213), the cylinder body (31) is provided with a piston cavity (311), a first air inlet (312), an air outlet (313) and a second air inlet (314); the piston member (32) is slidingly arranged in the piston cavity (311), and the lower end of the piston member (32) extends out of the piston cavity (311) and is connected with the upper end of the second rotating shaft (213); the piston member (32) divides the piston cavity (311) into a first chamber and a second chamber in the vertical direction, the first air inlet (312) and the air outlet (313) are communicated with the first chamber, the second air inlet (314) is communicated with the second chamber, the first air inlet (312) is connected with the gas source device, and the valve is arranged on the air outlet (313); the second air inlet (314) is communicated with the high-pressure reaction kettle (1).

5. The high pressure reactor vessel stirring system of claim 4, wherein, The second driving assembly (3) further comprises a detection assembly and a control device, the detection assembly is used for detecting the stroke of the piston member (32), the control device is electrically connected with the gas source device, the valve and the detection assembly, and the control device is used for controlling the start and stop of the gas source device and the valve according to the detection result.

6. The high pressure reactor vessel stirring system of claim 1, wherein, Each of the stirring paddle assemblies (22) comprises a plurality of stirring blades (221), the plurality of stirring blades (221) are arranged in the circumferential direction of the rotating shaft assembly (21) at intervals, and each of the stirring blades (221) is fixedly arranged on the rotating shaft assembly (21).

7. The high pressure reactor vessel stirring system of claim 6, wherein, The stirring blade (221) is arranged in an inclined manner with respect to the horizontal direction.

8. The high pressure reactor vessel stirring system of claim 6, wherein, The width of the stirring blade (221) gradually decreases in the direction away from the rotating shaft assembly (21).

9. The high pressure reactor vessel stirring system of claim 6, wherein, The stirring blade (221) is arranged in an arc shape.

10. The high pressure reactor vessel stirring system according to any one of claims 6-9, characterized in that, The surface of the stirring blade (221) is coated with an anti-fouling coating, and the material of the anti-fouling coating is nano ceramic.

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