A cleaning structure of a high-pressure reaction kettle stirring paddle blade

Abstract

The application discloses a cleaning structure of a highpressure reaction kettle stirring paddle blade, including a reaction kettle, stirring device and cleaning device; The stirring device comprises a stirring shaft and a stirring paddle, the stirring shaft rotates along the axis in the vertical direction and is installed in the reactor, and its lower end extends into the chamber of the reactor, and the stirring paddle is installed at the lower end of the stirring shaft; The cleaning device comprises an installation shaft and a brush, the installation shaft rotates along the axis in the vertical direction and is installed in the reaction kettle and the stirring shaft is arranged at intervals, the brush is installed along the vertical direction and the brush is installed on the installation shaft, the brush is moved down to the stirring paddle when it is in the cleaning state, the brush is moved up to the surface of the slurry to avoid the state, and in the cleaning state, The brush is connected with the stirring paddle, and the installation shaft drives the brush to rotate. In this application, the blade of the stirring paddle is cleaned by a rotating brush to realize the scaling removal of the stirring paddle blade and avoid scaling on the stirring paddle blade, which will affect the work of the stirring paddle.

Description

[0001] Description

[0002] A CLEANING STRUCTURE OF A HIGH-PRESSURE REACTION KETTLE STIRRING

[0003] PADDLE BLADE

[0004] FILED OF DISCLOSURE

[0005] The application relates to the technical field of nickel ore hydrometallurgy equipment , in particular to a cleaning structure of stirring paddle blade of a high pressure reaction kettle .

[0006] BACKGROUND

[0007] At present , in the hydrometallurgy method of laterite nickel ore , the pulp, sul furic acid and steam are usually inj ected into the high pressure reactor for smelting to leach nickel and cobalt in laterite nickel ore . When working in the high-pressure reactor, the iron ions and aluminum ions in laterite nickel ore will generate scale during hydrolysis , resulting in scale on the side wall of the reactor and the stirring blade in the reactor . When the scale is large , it needs to be cleaned in time to avoid af fecting the use of the device .

[0008] Patent CN212119980U disclose a reaction kettle with scale removal function, including the reaction kettle body, the outer wall of the reaction kettle body is fixed is connected with a shell , the inner wall of the shell is fixed is connected with a shock absorbing spring, the bottom of the shell is fixed is connected with a pillar, one end of the pillar is fixed is connected with a chassis , the outer wall of the pillar is fixed is connected with a support plate , The top of the support plate is fixably connected with the f irst chassis , the inner bottom wall of the first chassis is fixably connected with the first motor, the output shaft of the first motor is fixably connected with a descading brush through the coupling .

[0009] Although the above existing technology can descale the side wall of the reaction kettle , it cannot descale the agitator blade . When there is more scale on the agitator blade , on the one hand, the scale of each blade is di f ferent and the weight of each blade is di f ferent , which leads to the imbalance of the agitator and af fects its normal work; on the other hand, the weight of the agitator increases and the load increases , which af fects its service li fe .

[0010] SUMMARY

[0011] The purpose of this application is to overcome the shortcomings of the above technology and put forward a cleaning structure of stirring blade of high pressure reaction kettle , which solves the problem that although the existing technology can descale the side wall of the reaction kettle , it can not descale the stirring blade , resulting in more scale on the stirring blade . On the one hand, due to the di f ferent scale of each blade , the weight of each blade is di f ferent . As a result , the stirring paddle can not maintain balance and af fect the normal work . On the other hand, the weight of the stirring paddle increases , increasing the load and af fecting the technical problems of its service li fe .

[0012] In order to achieve the above technical purposes , the application adopts the following technical solutions :

[0013] This application provides a cleaning structure of a high- pressure reaction kettle stirring paddle blade comprising :

[0014] Reaction kettle ;

[0015] Stirring device , including stirring shaft and stirring paddle , the stirring shaft along the vertical direction of the axis rotation is installed in the reaction kettle , and its lower end extends into the reactor chamber, the stirring paddle is installed in the lower end of the stirring shaft ;

[0016] Cleaning device , including an installation shaft and a brush, the installation shaft along the vertical axis rotation is installed on the reactor and arranged with the stirring shaft interval , the brush along the vertical direction of the activity is installed on the installation shaft , the brush down the movement to the stirring paddle when the cleaning state , the brush up the movement to the surface of the ore slurry for the avoidance state , And in the cleaning state , the brush is connected with the stirring paddle , and the installation shaft drives the brush to rotate . In some embodiments , the cleaning device also comprises a first driving component and a second driving component , and the first driving component is arranged on the installation shaft , and the first driving component is connected with the brush to drive the brush along the vertical direction . The second driving component is connected with the installation shaft to drive the installation shaft to rotate .

[0017] In some embodiments , the brush is provided with a plurality of installation holes arranged along the middle of the brush;

[0018] The installation shaft is provided with a hollow setting, the circumference of the installation shaft is provided with a plurality of grooves , the groove through the inner and outer wall of the installation shaft , the two adj acent grooves between the formation of the installation wall , the installation wall and the installation hole adaptation, the brush sliding installed on the installation wall .

[0019] In some embodiments , the middle of the brush is provided with a thread hole ;

[0020] The first driving component comprises a screw rod and a first driving motor, the screw along the vertical direction of the axis rotation is installed in the installation shaft , and the screw rod is matched with the brush thread, the first driving motor is installed on the upper end of the installation shaft , the first driving motor spindle is connected with the screw rod .

[0021] In some embodiments , the second driving component comprises a driving bevel gear, a driven bevel gear and a second driving motor, the driving bevel gear along the hori zontal axis rotation is installed in the reaction kettle , the driven bevel gear is installed in the installation shaft , The driving bevel gear and the driven bevel gear are engaged, and the main shaft of the second driving motor is connected with the driving bevel gear .

[0022] In some embodiments , the stirring shaft is provided with the first flow path extending along the vertical direction, and the lower end of the first flow path is provided with a liquid inj ection hole toward the stirring paddle to spray the scale inhibitor to the stirring paddle through the first flow path .

[0023] In some embodiments , the cleaning device also includes a liquid storage tank and a valve component , the liquid storage tank contains a scale inhibitor, the liquid storage tank is connected with the upper end of the first flow channel through the valve component , in the cleaning state , the liquid storage tank and the first flow channel are disconnected . In the avoidance state , the liquid storage tank is connected with the first flow path .

[0024] In some embodiments , the stirring paddle comprises a plurality of blades , which are arranged at circumferential intervals along the stirring axis .

[0025] In some embodiments , the cleaning device also comprises two spray pipes , the spray pipe is installed on the stirring shaft and is located on the opposite sides of the blade , the spray pipe is connected with the first stream channel , the spray pipe is provided with a plurality of spray holes arranged along its axial interval . The ori fice is arranged toward one side of the blade .

[0026] In some embodiments , the kettle cavity is provided with a plurality of bulkheads arranged along the direction of the slurry flow path, and the plurality of bulkheads will be separated into a plurality of upper connected compartments , each compartment is provided with the stirring device and cleaning device .

[0027] Compared with the existing technology, the high pressure reaction kettle stirring paddle blade clean structure provided in this application, the stirring shaft along the vertical axis rotation is installed in the reaction kettle , and its lower end extends into the reactor chamber, the stirring paddle is installed in the lower end of the stirring shaft ; The installation shaft rotates along the axis of the vertical direction is installed on the reactor and is arranged with the stirring shaft interval , the brush is installed on the installation shaft along the vertical direction, the brush is moving down to the stirring paddle when the cleaning state , the brush is moving up to the surface of the ore slurry for the avoid state , and in the cleaning state , the brush is connected with the stirring paddle , and the installation shaft drives the brush rotation . When the reactor is in normal use , the brush is vertically moving up to the top of the reactor cavity . At this time , the brush is located above the slurry surface of the ore , in order to avoid the reaction inside the reactor with the brush . The brush moves down to the stirring paddle , at this time , the brush and the blade of the stirring paddle are connected, the installation shaft drives the brush rotation, the stirring shaft drives the stirring paddle rotation, through the rotation of the brush cleaning the blade of the stirring paddle, realize the removal of the stirring paddle, avoid more scale on the stirring paddle blade, affect the work of the stirring paddle.

[0028] The above description is only an overview of the technical scheme of this application. In order to better understand the technical means of this application and implement it in accordance with the contents of the specification, a better example of this application and the attached drawings are explained in detail as follows. The specific embodiments of this application are given in detail by the following embodiments and the attached drawings.

[0029] BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG. 1 is the structure diagram of an example of the cleaning structure of the stirring blade of the high pressure reactor provided in this application;

[0031] FIG. 2 is the left view section view of the cleaning structure of the stirring blade of the high pressure reactor in FIG. 1;

[0032] FIG. 3 is a partial section view of the cleaning device in FIG. 1;

[0033] FIG. 4 is a local section view of the installation shaft and brush in FIG. 1;

[0034] FIG. 5 is a stereoscopic diagram of the installation shaft in FIG. 1;

[0035] FIG. 6 is a stereoscopic sketch of the installation block in FIG. 1;

[0036] FIG. 7 is a local diagram of the stirring device in FIG. 1;

[0037] FIG. 8 is the top view of the stirring paddle in FIG. 1.

[0038] Note on the attached drawings :

[0039] 1- reaction kettle, 2- stirring device, 21- stirring shaft, 22- stirring paddle, 221- blade, 23- first bevel gear, 24- second bevel gear, 25- stirring motor, 26- spray pipe, 3- cleaning device, 31- installation shaft, 311- groove, 312- installation wall, 32- brush, 321- installation block, 3211- installation hole, 3212- threaded hole, 322- brush of kernel, 33- first driving component, 331- screw rod, 332- first driving motor, 34 - second driving component , 341 - driving bevel gear, 342- driven bevel gear, 343- second driving motor, 35- liquid storage tank, 36- air source device , 37- valve component , 4- bulkhead .

[0040] DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0041] In order to make the purpose , technical scheme and advantages of this application more clearly, the application i s further explained in detail by combining the attached drawings and embodiments . It is understood that the speci fic embodiments described herein are intended only to explain this Application and are not intended to quali fy it .

[0042] In order to solve the technical problem that although the existing technology can descale the side wall of the reactor, it can not descale the agitator blade , resulting in more scale on the agitator blade and af fecting the work of the agitator . This application provides a cleaning structure for the agitator blade of the high-pressure reaction kettle , which can descale the agitator blade and avoid more scale on the agitator blade . On the one hand, due to the di f ferent scaling conditions of each blade , the weight of each blade increases di f ferently, which leads to the impeller unable to maintain balance and af fects its normal work . On the other hand, the weight of the impeller increases and the load increases , which af fects its service li fe .

[0043] Please refer to Figure 1 , which shows the structural diagram of the cleaning structure of the stirring paddle blade of the high pressure reactor in an embodiment of this application .

[0044] The application provides a cleaning structure of a high pressure reaction kettle stirring paddle blade , including reaction kettle 1 , stirring device 2 and cleaning device 3 ; The stirring device 2 comprises stirring shaft 21 and stirring paddle 22 , the stirring shaft 21 along the vertical axis rotation is installed in the reactor 1 , and its lower end extends into the reactor chamber of the reactor 1 , the stirring paddle 22 is installed in the stirring shaft 21 lower end; The cleaning device 3 comprises installation shaft 31 and brush 32 , the installation shaft 31 along the vertical axis rotation i s installed on the reactor 1 and the stirring shaft 21 interval is set , the brush 32 along the vertical direction is installed on the installation shaft 31 , the brush 32 down to the stirring paddle 22 when the cleaning state , When the brush 32 moves upward to the slurry surface of the ore , it is in a state of avoidance . In the cleaning state , the brush 32 is connected with the stirring paddle 22 , and the installation shaft 31 drives the brush 32 to rotate .

[0045] In this embodiment , please refer to Figs . 1 to 3 , the stirring shaft 21 is installed on the reactor 1 by rotating along the axis in the vertical direction, and its lower end is extended into the kettle chamber of the reactor 1 , and the stirring paddle 22 is installed on the lower end of the stirring shaft 21 ; The installation axis 31 along the vertical direction of the axis rotation is installed on the reactor 1 and arranged with the stirring axis 21 interval , the brush 32 along the vertical direction of the activity is installed on the installation axis 31 , in order to have a downward movement to the stirring paddle 22 flush cleaning state and upward movement to the ore slurry surface to avoid the state , and in the cleaning state , The brush 32 is connected with the stirring paddle 22 , and the installation shaft 31 drives the brush 32 to rotate . When the reactor 1 is in normal use , the brush 32 moves vertically up to the top of the reactor cavity, and the brush 32 is located above the slurry surface to avoid the brush 32 interfering with the reaction inside the reactor 1 . When the reactor 1 internal scaling to a certain extent after the need to stop descaling, the brush 32 down to the stirring paddle 22 flush, at this time the brush 32 and the stirring paddle 22 blade 221 touch, the installation shaft 31 drive the brush 32 rotation, the stirring axis 21 drive the stirring paddle 22 rotation, The blade 221 of the stirring paddle 22 is cleaned by a rotating brush 32 , and the scaling of the blade 221 of the stirring paddle 22 is reali zed to avoid scaling on the blade 221 and af fect the work of the stirring paddle 22 .

[0046] In this embodiment , the distance between the installation shaft 31 and the stirring shaft 21 is greater than the radius of the stirring paddle 22 and less than the radius of the brush 32 , so that on the one hand, the installation shaft 31 can avoid interfering with the rotation of the stirring paddle 22 , and on the other hand, the brush 32 can contact the whole blade 221 . Ensure that the brush 32 can scrub the entire leaf 221 .

[0047] It is understandable that when cleaning, the stirring shaft 21 can be combined with the brush 32 positive and negative rotation, so as to drive the stirring paddle 22 positive and negative rotation, and the stirring shaft 21 speed is adj ustable to ensure that both sides of the blade 221 can contact with the brush 32 .

[0048] In this embodiment , the brush 32 comprises a installation block 321 and a brush of kernel 322 arranged around the circumference of the installation block 321 . The installation block 321 is made of a hard material , and the brush of kernel 322 is made of a flexible material . The installation block 321 is mounted on the installation shaft 31 in a vertical direction . The brush of kernel 322 are used to make contact with the blade 221 of the stirring paddle 22 .

[0049] In one embodiment , see Figs . 2 to 3 , the cleaning device 3 further comprises a first driving component 33 and a second driving component 34 , where the first driving component 33 is arranged on the installation shaft 31 , and the first driving component 33 is connected with the brush 32 to drive the brush 32 to move in the vertical direction . The second driving component 34 is connected with the installation shaft 31 to drive the installation shaft 31 to turn .

[0050] In this embodiment , the installation shaft 31 is arranged vertically, the lower end of the installation shaft 31 rotates and is installed at the bottom of the kettle chamber, the upper end of the installation shaft 31 extends out of the kettle chamber, and the second driving component 34 is connected with the upper end of the installation shaft 31 , so that the installation shaft 31 is rotated by the second driving component 34 . The first driving component 33 is installed on the installation shaft 31 , and the first driving component 33 is extended into the kettle cavity and connected with the brush 32 , so as to drive the brush 32 along the vertical direction through the first driving component 33 , and reali ze the up and down activity and rotation of the brush 32 through the cooperation of the above components .

[0051] It is understood that the position where the upper end of the installation shaft 31 passes through the reaction kettle 1 is provided with a bearing and a sealing device to ensure the tightness of the reaction kettle 1 . The bearing and the sealing device are the existing technology and will not be described here .

[0052] In one embodiment , see Figs . 3 to 6 , the brush 32 is provided with a plurality of installation holes 3211 arranged at intervals along the middle of the brush 32 ; The installation shaft 31 is hollow set , the circumference of the installation shaft 31 is provided with a plurality of grooves 311 , the groove 311 through the internal and external walls of the installation shaft 31 , the two adj acent grooves 311 between the formation of a installation wall 312 , the installation wall 312 and the installation hole 3211 fit , the brush 32 sliding installation on the installation wall 312 .

[0053] In this embodiment , the brush 32 can move in the vertical direction relative to the installation shaft 31 and can rotate synchronously with the installation shaft 31 , so a circumferential limit is required between the brush 32 and the installation shaft 31 , that is , the installation hole 3211 is arranged in the installation block 321 , and the installation hole 3211 is arranged in the installation block 321 . And a plurality of the installation hole 3211 is arranged along the circumferential interval of the installation block 321 , the installation hole 3211 is arranged in an arc, the installation shaft 31 is a hollow tubular structure , the installation shaft 31 is located in the part of the kettle cavity is the first installation section, the installation shaft 31 is located in the part of the kettle cavity is the second installation section, The circumference of the first installation section is provided with a plurality of grooves 311 , the groove 311 through the inner wall and outer wall of the first installation section, so that the pipe wall between the two adj acent grooves 311 forms the installation wall 312 , the installation wall 312 and the si ze of the installation hole 3211 fit , A plurality of the installation wall 312 and a plurality of the installation hole 3211 one to one corresponding, the installation wall 312 is located in the installation hole 3211 , so that the installation block 321 can slide along the vertical direction, and the installation hole 3211 and the installation wall 312 limit fit , capable of limiting the mutual rotation between the installation block 321 and the installation shaft 31 . In one embodiment , see Figs . 3 to 6 , the middle part of the brush 32 is provided with a threaded hole 3212 ; The first driving component 33 comprises a screw 331 and a first driving motor 332 , the screw 331 along the vertical direction of the axis rotation is installed in the installation shaft 31 , and the screw 331 and the brush 32 thread, the first driving motor 332 is installed in the upper end of the installation shaft 31 , and the screw 331 and the brush 32 thread fit , the first driving motor 332 is installed in the upper end of the installation shaft 31 . The main shaft o f the first drive motor 332 is connected with the screw 331 .

[0054] In this implementation, the middle part of the installation block 321 is provided with a threaded hole 3212 , the diameter of the threaded hole 3212 is less than the diameter of the hollow part of the installation shaft 31 , so that the threaded hole 3212 is located in the installation shaft 31 , and the screw 331 is installed in the installation shaft 31 by rotating along the axis in the vertical direction . The lower end of the screw 331 is flush with the installation shaft 31 , the upper end of the screw 331 is protruding the installation shaft 31 is set , the upper and lower ends of the screw 331 are connected with the installation shaft 31 through bearings , and the upper end of the screw 331 is provided with a sealing device between the upper end of the screw 331 and the screw 331 , the upper end of the installation shaft 31 is provided with an installation disc, The first drive motor 332 is installed on the installation plate , and the main shaft of the first drive motor 332 is coaxial with the screw 331 downward, the main shaft of the first drive motor 332 is connected with the upper end of the screw 331 fixedly through the coupling, when the installation shaft 31 rotates , It can drive the screw 331 and the first driving motor 332 and brush 32 to rotate synchronously . When the first driving motor 332 drives the screw 331 to rotate , it can drive the brush 32 to slide along the vertical direction .

[0055] In one embodiment , see Figs . 3 to 6 , the second driving component 34 comprises a driving bevel gear 341 , a driven bevel gear 342 and a second driving motor 343 . The driving bevel gear 341 rotates along an axis in the hori zontal direction and is mounted on the reactor 1 , and the driven bevel gear 342 is mounted on the installation shaft 31 . The driving bevel gear 341 and the driven bevel gear 342 are engaged, and the main shaft of the second driving motor 343 is connected with the driving bevel gear 341 .

[0056] In this embodiment , since the upper end of the instal lation shaft 31 is provided with the first driving motor 332 , in order to avoid interference between the second driving component 34 and the first driving motor 332 , the driven bevel gear 342 is fixed on the periphery of the second installation section, and the second driving motor 343 is fixed on the outside of the reaction kettle 1 . And the second drive motor 343 spindle is arranged along the hori zontal direction extension, the second drive motor 343 spindle and the active bevel gear 341 fixed connection, through the active bevel gear 341 and the driven bevel gear 342 can change the transmission direction, in order to avoid the second drive motor 343 and the first drive motor 332 interference .

[0057] In one embodiment , the stirring shaft 21 is provided with a first flow path extending in a vertical direction, and the lower end of the first flow path is provided with a spray hole toward the stirring paddle 22 to spray a scale inhibitor to the stirring paddle 22 through the first flow path .

[0058] In this embodiment , in order to slow down the scale formation rate on the surface of the stirring paddle 22 when the reactor is working normally, a scale inhibitor can be sprayed into the reactor 1 , and in order to accurately spray the scale inhibitor on the stirring paddle 22 , a first flow channel can be opened in the middle of the stirring shaft 21 . The first flow path through the top surface of the stirring shaft 21 is connected with the liquid storage tank 35 equipped with the scale inhibitor, the stirring shaft 21 near the stirring paddle 22 is provided with a spray hole connected with the first flow path, the spray hole is arranged toward the stirring paddle 22 , so that the scale inhibitor can be sprayed on the stirring paddle 22 through the first flow path and the spray hole . Together with the brushing of the brush 32 , the cleaning ef ficiency of the stirring paddle 22 is improved .

[0059] The speci fic form and number of the liquid inj ection hole are not limited, and can be set according to the speci fic form of the stirring paddle 22 .

[0060] In this embodiment , refer to Figure 7 , the stirring device 2 also comprises a first bevel gear 23 , a second bevel gear 24 and a stirring motor 25 . The first bevel gear 23 rotates along an axis in the hori zontal direction and is installed in the reaction kettle 1 , the second bevel gear 24 is installed in the stirring shaft 21 , and the first bevel gear 23 and the second bevel gear 24 engage . The main shaft of the stirring motor 25 is connected with the first bevel gear 23 . Through the meshing of the first bevel gear 23 and the second bevel gear 24 , the transmission direction can be changed to avoid the interference between the stirring motor 25 and the pipeline connected with the first stream channel .

[0061] It is understood that the connection of the stirring shaft 21 and the reaction kettle 1 is also provided with a bearing and a sealing device .

[0062] In one embodiment , see Figure 7 , the cleaning device 3 also includes a reservoir tank 35 and a valve component 37 . The reservoir tank 35 contains a scale inhibitor, and the reservoir tank 35 is connected to the upper end of the first flow path through the valve component 37 . In the cleaning state , the reservoir tank 35 is disconnected from the first flow path, and in the avoidance state , The liquid storage tank 35 is connected with the first flow channel .

[0063] In this embodiment , when the reactor 1 is working normally, the scale inhibitor can be inj ected into the reactor 1 , and the scale inhibitor can be used to delay the scale formation rate on the surface of the stirring oar 22 . When the reactor 1 is stopped for scale removal , the scale removal is carried out through the brush 32 and the high-pressure water gun, without spraying the scale inhibitor . Therefore , the valve component 37 is set up to control the on-of f between the liquid storage tank 35 and the first flow channel , that is , when the reaction kettle 1 is working normal ly and the brush 32 is in the avoiding state , the liquid storage tank 35 is connected with the first flow channel , and the scale inhibitor is continuously inj ected into the reaction kettle 1 . When the reaction kettle 1 is stopped and descaled, The liquid storage tank 35 is disconnected from the first flow channel .

[0064] In another embodiment , when the reactor 1 is in normal operation, the scale inhibitor can be inj ected into the reactor 1 intermittently according to the reaction process . At this time , the cleaning device 3 includes a liquid storage tank 35 , a gas source device 36 and a valve component 37 , and the liquid storage tank 35 contains a scale inhibitor . The liquid storage tank 35 and the gas source device 36 are connected with the upper end of the first flow path through the valve component 37 . The valve component 37 is used to connect the liquid storage tank 35 or the gas source device 36 with the first flow path . In the avoidance state , the gas source device 36 and the liquid storage tank 35 are alternately connected with the first flow path .

[0065] Speci fically, the reaction kettle 1 is a closed high-pressure environment , and it is necessary to ensure that the first flow channel is sealed . During scale suppression, it is necessary to transport the scale inhibitor to the kettle cavity through the liquid storage tank 35 from the first flow channel . In order to reali ze the gas source device 36 and the liquid storage tank 35 are alternately connected with the first flow channel . The upper end of the first pipe is connected with the first pipe , the liquid storage tank 35 is connected with the first pipe through the second pipe , the gas source device 36 is connected with the f irst pipe through the third pipe , the valve component 37 is arranged in the first pipe or the second pipe and the third pipe , Through the valve component 37 can control the first pipeline and the second pipeline and one of the third pipeline is connected, when there is no need to spray the scale inhibitor , the valve component 37 control the first pipeline and the third pipeline connected, at this time , the gas source component to the first pipeline to convey air, Ensure that the pressure in the first flow channel is the same as the pressure in the kettle cavity, so as to play a sealing role . When spraying the scale inhibitor, the valve component 37 controls the first pipeline and the second pipeline connection, and the liquid storage tank 35 delivers the scale inhibitor to the first flow channel , and intermittently inj ect the scale inhibitor according to the reaction process through the combination of the above components . Reduce the amount of scale inhibitor .

[0066] In this embodiment , the first pipe , the second pipe and the third pipe are provided with a check valve .

[0067] In this embodiment , the valve component 37 May be a three-way solenoid valve , which is located at the j unction of the first pipe , the second pipe and the third pipe , or the valve component 37 comprises a first valve , a second valve and a third valve , where the first valve is located in the first pipe and the second valve is located in the second pipe , and the second valve is located in the second pipe . The third valve is arranged in the third pipeline , through the first valve , the second valve and the third valve to achieve the purpose of switching .

[0068] In this embodiment , during the high pressure leaching reaction of laterite nickel ore , the slurry, acid solution and high temperature and high pressure steam should be inj ected into the reaction kettle 1 . The slurry and acid solution can react , and the high temperature and high pressure steam can provide a high temperature and high pressure environment for the reaction to improve the reaction rate . Therefore , the gas source device 36 can be the steam source of the plant . In other words , the gas source device 36 can convey high temperature and high pressure steam to the kettle cavity through the first flow channel , so that no additional gas source equipment is required to reduce energy consumption .

[0069] In one embodiment , see FIG . 8 , the stirring paddle 22 includes a plurality of blades 221 arranged at circumferential intervals along the stirring axis 21 .

[0070] In this embodiment , one end of each blade 221 is fixed on the stirring shaft 21 , and each blade 221 is tilted with the hori zontal direction, and one side of the blade 221 is provided with a connecting shaft , and the connecting shaft is fixedly connected with the stirring shaft 21 , and the connecting shaft is gradually tilted upward in the direction away from the stirring shaft 21 . Thus , the blade 221 is incl ined to the hori zontal direction, and the blade 221 itsel f is also inclined to the hori zontal direction, so that the second stirring paddle 22 rotation, can drive the material to float , can improve the mixing ef ficiency, so as to promote the reaction process .

[0071] In this embodiment , because the reactor 1 as a whole has a columnar structure extending along the hori zontal direction, so to avoid interference with the reactor 1 , the width of the blade 221 is gradually reduced along the direction away from the stirring axis 21 , and the blade 221 is arranged in an arc shape to facilitate stirring . In one embodiment , refer to Figure 8 , the cleaning device 3 also comprises two spray pipes 26 mounted on the stirring shaft 21 and located on opposite sides of the blade 221 , the spray pipe 26 is connected with the first flow channel , and the spray pipe 26 is provided with a plurality of spray holes arranged along its axial interval , and the cleaning device is provided with a plurality of spray holes arranged along its axial interval . The ori fice is arranged on one side of the blade 221 .

[0072] In this embodiment , since the blade 221 is a plate structure , in order to ensure that both sides of the blade 221 opposite can spray the scale inhibitor, the spray hole is provided with two , two spray holes are located on both sides of the blade 221 opposite , two spray holes form a spray group, and the spray group is provided with a number of , A number of the spray group and a number of the blade 221 one-one correspondence , two of the spray pipe 26 and two of the spray hole one-one correspondence , one end of each of the spray pipe 26 and the spray hole connection, the other end of the spray pipe 26 plugged, the spray pipe 26 extension direction and the extension direction of the blade 221 consistent , The spray pipe 26 is provided with a number of spray holes arranged along its axial interval , and the spray hole is arranged on the side of the blade 221 , so that both sides of the blade 221 can be sprayed with scale inhibitor to enhance the cleaning ef fect .

[0073] In one embodiment , see Figs . 1 to 2 , the kettle chamber is provided with a plurality of bulkheads 4 arranged at intervals along the direction of the slurry flow path, and the plurality of bulkheads 4 separates the kettle chamber into a plurality of upper connected compartments , each of which is provided with the stirring device 2 and the cleaning device 3 .

[0074] In this embodiment , in order to improve the reaction rate , the kettle chamber can be divided into multiple compartments , and the material passes through the multiple compartments in turn, so as to extend the time of the slurry in the reactor 1 , and each compartment is provided with a stirring device 2 and a cleaning device 3 , and the stirring device 2 can improve the material mixing rate in each compartment . The cleaning device 3 can clean the blade 221 of each stirring device 2 . In order to better understand this application, the technical scheme of this application is explained in detail in combination with Figs . 1 to 8 as follows :

[0075] When the reactor 1 is working normally, the first driving motor 332 drives the screw 331 to drive the brush 32 to move up vertically until the brush 32 moves to the top of the kettle cavity and is in the avoidance state . The valve component 37 controls the liquid storage tank to connect with the first stream channel to instill the scale inhibitor into the reactor . Delay the scaling rate of the stirring paddle , the stirring motor 25 starts , through the first bevel gear 23 and the second bevel gear 24 drive the stirring shaft 21 and the stirring paddle 22 work, in the reactor shutdown descaling, the material in the kettle cavity is empty, the first driving motor 332 drive the brush 32 downward activity, until the brush 32 and the stirring paddle 22 flush, at this time the brush of kernel 322 and the blade 221 reach, the first drive motor 332 stop working, the second drive motor 343 start , drive the installation shaft 31 and the brush 32 rotation, the valve component 37 control the liquid storage tank 35 and the first stream channel disconnect , The stirring device 2 rotates with the brush 32 , and the descaling of the blade 221 is completed by the rotating brush 32 . At the same time , the brush 32 can also be reciprocated in the vertical direction during the rotation process , and the side wall of the reactor 1 in contact with the brush 32 can be scrubbed .

[0076] The above speci fic mode of implementation of this application shall not limit the scope o f protection of this application . Any other corresponding changes and deformations made according to the technical ideas of the application shall be included in the scope of protection of the claims of the application .

Claims

WHAT IS CLAIMED IS1 . A cleaning structure of a high-pressure reaction kettle stirring paddle blade is characteri zed in that it comprises :Reaction kettle ;Stirring device , including stirring shaft and stirring paddle , the stirring shaft along the vertical direction of the axis rotation is installed in the reaction kettle , and its lower end extends into the reactor chamber, the stirring paddle is installed in the lower end of the stirring shaft ;Cleaning device , including an installation shaft and a brush, the installation shaft along the vertical axis rotation is installed on the reactor and arranged with the stirring shaft interval , the brush along the vertical direction of the activity is installed on the installation shaft , the brush down the movement to the stirring paddle when the cleaning state , the brush up the movement to the surface of the ore slurry for the avoidance state , And in the cleaning state , the brush is connected with the stirring paddle , and the installation shaft drives the brush to rotate .2 . According to claim 1 , the cleaning structure of the high pressure reaction kettle stirring paddle blade is characteri zed in that the cleaning device also comprises a first driving component and a second driving component , and the first driving component is arranged on the installation shaft , and the first driving component is connected with the brush to drive the brush along the vertical direction . The second driving component is connected with the installation shaft to drive the installation shaft to rotate .3 . According to claim 2 , the cleaning structure of the stirring paddle blade of the high-pressure reaction kettle is characteri zed in that the brush is provided with a plurality of installation holes arranged along the middle of the brush;The installation shaft is provided with a hollow setting, the circumference of the installation shaft is provided with a plurality of grooves , the groove through the inner and outer wall of the installation shaft , the two adj acent grooves between the formation of the installation wall , the installation wall and theinstallation hole adaptation, the brush sliding installed on the installation wall .4 . According to claim 3 , the cleaning structure of the stirring paddle blade of the high-pressure reaction kettle is characteri zed by that the middle of the brush is provided with a thread hole ;The first driving component comprises a screw rod and a first driving motor, the screw rod along the vertical direction of the axis rotation is installed in the installation shaft , and the screw rod is matched with the brush thread, the first driving motor is installed on the upper end of the installation shaft , the first driving motor spindle is connected with the screw rod .5 . According to claim 2 , the high pressure reaction kettle stirring paddle blade cleaning structure , which is characteri zed in that the second driving component comprises a driving bevel gear, a driven bevel gear and a second driving motor, the driving bevel gear along the hori zontal axis rotation is installed in the reaction kettle , the driven bevel gear is installed in the installation shaft , The driving bevel gear and the driven bevel gear are engaged, and the main shaft of the second driving motor is connected with the driving bevel gear .6 . According to claim 1 , the cleaning structure of the high pressure reaction kettle stirring paddle blade is characteri zed in that the stirring shaft is provided with the first flow path extending along the vertical direction, and the lower end of the first flow path is provided with a liquid inj ection hole toward the stirring paddle to spray the scale inhibitor to the stirring paddle through the first flow path .7 . According to claim 6 , the cleaning structure of the high pressure reaction kettle stirring paddle blade is characteri zed by that the cleaning device also includes a liquid storage tank and a valve component , the liquid storage tank contains a scale inhibitor, the liquid storage tank is connected with the upper end of the first flow channel through the valve component , in the cleaning state , the liquid storage tank and the first flow channelare disconnected, In the avoidance state , the liquid storage tank is connected with the first flow path .8 . According to claim 6 , the cleaning structure of the stirring paddle blade of the high pressure reaction kettle is characteri zed by that the stirring paddle comprises a plurality of blades , which are arranged at circumferential intervals along the stirring axis .9 . According to claim 8 , the cleaning structure of the high pressure reaction kettle stirring paddle blade is characteri zed by that the cleaning device also comprises two spray pipes , the spray pipe is installed on the stirring shaft and is located on the opposite sides of the blade , the spray pipe is connected with the first stream channel , the spray pipe is provided with a plurality of spray holes arranged along its axial interval . The ori fice is arranged toward one side of the blade .10 . According to claim 1 , the cleaning structure of the high pressure reaction kettle stirring paddle blade is characteri zed by that the kettle cavity is provided with a plurality of bulkheads arranged along the direction of the slurry flow path, and the plurality of bulkheads will be separated into a plurality of upper connected compartments , each compartment is provided with the stirring device and cleaning device .

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