Water treatment agent mixing and stirring kettle and mixing method thereof

Abstract

The invention discloses a water treatment agent mixing and stirring kettle and a mixing method thereof, and relates to the field of stirring kettles. The water treatment agent mixing and stirring kettle comprises a kettle body unit, a stirring unit arranged in the kettle body unit and a driving unit used for driving the stirring unit, and the kettle body unit comprises a shell and a gradient concentration sensor group installed on the shell; the stirring unit comprises a push-type paddle, an anchor-type paddle and a turbo-type paddle which are coaxially arranged in a layered manner from top to bottom; an outer shaft, a middle shaft and an inner shaft are fixedly inserted into the push-type paddle, the anchor-type paddle and the turbo-type paddle respectively. According to the water treatment agent mixing and stirring kettle, the outer shaft, the middle shaft and the inner shaft are of a concentric sleeve type structure and can independently rotate and lift, and the rotating speed and height of a certain layer of blades can be independently regulated and controlled according to the characteristics of different agents in cooperation with the push type blades, the anchor type blades and the turbo type blades which are arranged in a layered mode from top to bottom.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of stirred tanks, in particular to a water treatment agent mixing stirred tank and a mixing method thereof. BACKGROUND

[0002] In the water treatment process, agent mixing is one of the core links. Different types of water treatment agents (such as corrosion and scale inhibitors of the dissolution type, bactericides of the mixing type, and PAM of the high polymer type) have significant differences in the requirements for stirring conditions: high-intensity shear stirring is required for dissolution-type agents to accelerate dissolution, low-shear stirring is required for high-molecular agents to avoid molecular chain rupture, uniform dispersion stirring is required for mixing-type agents to ensure sufficient reaction, and the height position of the paddle also has specific requirements when different agents are mixed (such as avoiding volatilization near the liquid surface and preventing settling at the bottom).

[0003] However, the paddle structure of the existing water treatment agent mixing stirred tank has fundamental limitations:

[0004] Traditional stirred tanks are mostly designed with a single shaft and a single paddle. The rotating state (speed) and installation height of the paddle are fixed, and only the stirring requirements of a single type of agent can be met. When dealing with different types of agents, the corresponding paddle needs to be manually disassembled and replaced (such as replacing a propeller paddle with a turbine paddle or adjusting the paddle installation height), which is tedious and time-consuming, and seriously affects the continuity of the water treatment process.

[0005] Some improved stirred tanks are equipped with multiple paddles, but they are mostly fixedly connected to the same drive shaft, and the paddles cannot rotate and lift independently. The paddle combination still needs to be replaced as a whole to adapt to different agents, and the core problem of paddle replacement dependence has not been solved.

[0006] Frequent disassembly and replacement of paddles also has additional drawbacks: on the one hand, residual agents on the inner wall of the tank and the surface of the paddle during disassembly and assembly can cause cross-contamination when mixing different agents subsequently, affecting the water treatment effect; on the other hand, repeated disassembly and assembly can wear out the connection parts of the paddle and the sealing structure of the tank, reducing the service life of the equipment, and the coaxiality and height precision of the paddle after reinstallation are difficult to guarantee, further affecting the stirring uniformity.

[0007] For composite agent mixing scenarios (requiring the sequential addition of multiple agents with different characteristics), the existing equipment needs to be stopped and the paddle replaced multiple times when adding different agents, which not only is inefficient, but also can cause the mixed agents to settle or the reaction to be unbalanced due to the stoppage, further reducing the treatment effect. SUMMARY

[0008] The present application aims to provide a water treatment agent mixing stirred tank and a mixing method thereof to solve the problems raised in the background.

[0009] In order to achieve the above object, the present application provides the following technical scheme: a water treatment agent mixing and stirring tank, comprising a tank body unit, a stirring unit arranged in the tank body unit, and a driving unit for driving the stirring unit, wherein the tank body unit comprises a shell and a gradient concentration sensor group mounted on the shell;

[0010] The stirring unit comprises propeller blades, anchor blades and turbine blades arranged coaxially and in layers from top to bottom, the inner parts of the propeller blades, anchor blades and turbine blades are respectively fixedly connected with an outer shaft, a middle shaft and an inner shaft, the outer shaft, the middle shaft and the inner shaft are concentric sleeve structures, and the three can rotate independently and lift independently;

[0011] The driving unit comprises an outer driving shaft, a middle driving shaft and an inner driving shaft fixedly connected with the outer shaft, the middle shaft and the inner shaft one by one, the outer driving shaft, the middle driving shaft and the inner driving shaft are concentric sleeve structures, and the three are connected with a rotating assembly for driving the rotation thereof and a height adjusting assembly for driving the axial lifting thereof.

[0012] Preferably, the gradient concentration sensor group is composed of at least three concentration sensors distributed in a gradient along the height direction of the shell, corresponding to the upper, middle and lower regions of the shell respectively, for detecting the concentration of the agent at different heights in real time; the top of the shell is provided with at least two independent feed ports, the bottom center is provided with a discharge port, the top of the shell is fixedly connected with a protective cover, and the protective cover is arranged outside the driving unit.

[0013] Preferably, the rotating assembly comprises a support plate and three motor supports fixedly installed on the side surface of the support plate, a first driving motor is installed on the motor support, a connecting frame is fixedly connected to the outer side of the motor support, a worm is rotatably connected to the lower side of the connecting frame, the first driving motor is used to drive the rotation of the worm, a circular guide rail is fixedly connected to the outer side of the connecting frame, the circular guide rail is movably sleeved on the outer side of the outer driving shaft or the middle driving shaft or the inner driving shaft, a worm wheel is rotatably connected to the lower side of the circular guide rail, and the worm is meshingly connected with the worm wheel.

[0014] Preferably, the outer side of the outer driving shaft, the middle driving shaft and the inner driving shaft is provided with an axially extending spline groove, a spline block is fixedly connected to the inner wall of the worm wheel, the spline block is slidably embedded in the spline groove, the torque transmission between the worm wheel and the outer driving shaft or the middle driving shaft or the inner driving shaft is realized, and the outer driving shaft, the middle driving shaft and the inner driving shaft are allowed to axially lift relative to the worm wheel.

[0015] Preferably, a gear box is fixedly installed between the end of the first driving motor and the end of the connecting frame, the end of the output shaft of the first driving motor and the end of the worm extend towards the inside of the gear box, and a first gear set is arranged between the end of the output shaft of the first driving motor and the end of the worm.

[0016] Preferably, a plurality of connecting rods are fixedly connected between the top of the connecting frame and the upper portion of the circular guide rail, and a sliding ring is rotatably connected to the lower portion of the circular guide rail and fixed to the top of the worm gear, so as to realize the rotational positioning of the worm gear relative to the circular guide rail.

[0017] Preferably, the height adjusting assembly comprises a vertical support frame and three second driving motors mounted on the outer side of the vertical support frame, and the other side of the vertical support frame is rotatably connected with three screws corresponding to the second driving motors, the second driving motors are used to drive the screws to rotate, the outer side of the screw is threadedly connected with a threaded block, and the threaded block is fixedly connected with a movable frame, the other end of the movable frame is fixedly connected with a rotating disc, and the rotating disc is rotatably sleeved with the top end of the outer driving shaft, the middle driving shaft or the inner driving shaft, so as to drive the outer driving shaft, the middle driving shaft and the inner driving shaft to axially ascend and descend without interfering with the rotation thereof.

[0018] Preferably, the end of the second driving motor output shaft and the top end of the screw are inserted into the interior of the vertical support frame, and a second gear set is arranged between the end of the second driving motor output shaft and the top end of the screw.

[0019] Preferably, the top end of the outer driving shaft, the middle driving shaft and the inner driving shaft is provided with an annular rotating groove, and the inner ring of the rotating disc is embedded in the rotating groove through a bearing, so as to realize the low-friction rotational connection between the rotating disc and the outer driving shaft, the middle driving shaft or the inner driving shaft.

[0020] A mixing method of a water treatment agent mixing and stirring kettle, which adopts a water treatment agent mixing and stirring kettle and comprises the following steps:

[0021] S1. Parameter presetting: according to the type of the agent to be treated, target parameters are set:

[0022] If the agent is a dissolving type agent, the target rotating speed of the turbine paddle is set to 100-300 r / min, the concentration uniformity threshold value of the gradient concentration sensor group is ≤0.03%, and the inner driving shaft is driven to the lower cylindrical and conical transition area of the shell through the height adjusting assembly;

[0023] If the agent is a mixing type agent, the target rotating speed of the anchor paddle is set to 50-150 r / min, the concentration uniformity threshold value is ≤0.03%, and the middle driving shaft is driven to the middle cylindrical area of the shell through the height adjusting assembly;

[0024] If the agent is a high-molecular type agent, the target rotating speed of the propeller paddle is set to 80-120 r / min, the concentration uniformity threshold value is ≤0.03%, the outer driving shaft is driven to the upper cylindrical area of the shell through the height adjusting assembly, and the initial position of the paddle is located 5-10 cm below the liquid surface.

[0025] If it is a composite agent: preset the agent dosing sequence and timing, set the dosing logic of adjusting agents, inorganic dissolution agents, organic / polymer agents and mixed agents, the interval between adjacent agent dosing is 1-5 min, and the multi-paddle simultaneous timing is preset;

[0026] S2. Linkage stirring operation: start the rotating assembly corresponding to the paddle, drive the corresponding drive shaft and paddle to rotate; monitor the liquid level in the shell in real time, if the liquid level fluctuation causes the paddle to deviate from the optimal immersion interval, the height adjusting assembly adjusts the height of the corresponding drive shaft and paddle, synchronously fine tunes the paddle speed, the speed is reduced by 20-30% when the liquid level is too low, and the speed is increased by 10-15% when the liquid level is too high;

[0027] The gradient concentration sensor group detects the concentration of the agent in the upper, middle and lower parts of the shell in real time, and calculates the concentration gradient value; if the concentration gradient value is greater than 0.05%, the multi-paddle operation state is adjusted according to the gradient direction: when the upper concentration is higher than the lower concentration, the propeller paddle speed is increased by 10% and adjusted downward by 5-10 cm, and the anchor paddle speed is increased by 15%; when the lower concentration is higher than the upper concentration, the turbine paddle speed is increased by 10% and adjusted upward by 5-8 cm, and the propeller paddle speed is reduced by 10%; when the concentration gradient value is greater than 0.1%, the multi-paddle timing cooperative stirring is started, first the turbine paddle cooperates with the anchor paddle for 3 min, then the propeller paddle cooperates with the anchor paddle for 2 min, until the concentration gradient is less than or equal to 0.03%;

[0028] S3. Agent dosing and adaptive adjustment: add the agent through the feed inlet according to the preset sequence, and adjust the dosing rate according to the real-time data of the gradient concentration sensor group during the dosing process: when the concentration is 30% lower than the target value, increase the dosing rate, and when the concentration approaches the target value, reduce the dosing rate; if it is a pH-sensitive agent, the pH value in the tank is monitored synchronously, when the pH deviates from the optimal adaptive interval, the main agent dosing is paused, the pH adjusting agent is added first, and the main agent dosing is resumed after the pH is stabilized by the anchor paddle accelerated mixing.

[0029] S4. Shutdown and discharge: when the gradient concentration sensor group detects that the whole tank concentration is uniform and reaches the target concentration, and there is no fluctuation for 30s, the rotating assembly is controlled to stop the corresponding paddle rotation; if the stirring is not immediately discharged after the stirring is completed, the intermittent stirring mode is started, the anchor paddle is started to stir at 80r / min for 30s every 5-10 min, and the turbine paddle is added for the high-settling-risk agent to stir at 100r / min for 1 min, until the discharge is completed.

[0030] The technical effects and advantages of the present application are as follows:

[0031] 1. The water treatment agent mixing agitator kettle, the outer shaft, the middle shaft and the inner shaft adopt concentric sleeve structure and can rotate and lift independently, cooperate with the propeller blade, the anchor blade and the turbine blade arranged from top to bottom, can independently control the rotating speed and height of the blade of a layer according to the characteristics of different agents, the outer drive shaft, the middle drive shaft and the inner drive shaft of the driving unit are fixedly connected with the shaft body of the stirring unit one by one, and are respectively provided with rotating assemblies and height adjusting assemblies, so that the rotation and lifting are independently controlled and do not interfere with each other, the problem of conflict between driving and lifting in the traditional equipment is solved; the gradient concentration sensor group of the kettle body unit can capture the concentration distribution of the whole kettle in real time, provide data support for the adjustment of the driving unit, form a detection, adjustment and feedback closed loop, ensure the uniformity of mixing, and avoid local high or low concentration.

[0032] 2. The water treatment agent mixing agitator kettle, the outer shaft, the middle shaft and the inner shaft adopt concentric sleeve structure and can rotate and lift independently, cooperate with the propeller blade, the anchor blade and the turbine blade arranged from top to bottom, can independently control the rotating speed and height of the blade of a layer according to the characteristics of different agents, the outer drive shaft, the middle drive shaft and the inner drive shaft of the driving unit are fixedly connected with the shaft body of the stirring unit one by one, and are respectively provided with rotating assemblies and height adjusting assemblies, so that the rotation and lifting are independently controlled and do not interfere with each other, the problem of conflict between driving and lifting in the traditional equipment is solved; the gradient concentration sensor group of the kettle body unit can capture the concentration distribution of the whole kettle in real time, provide data support for the adjustment of the driving unit, form a detection, adjustment and feedback closed loop, ensure the uniformity of mixing, and avoid local high or low concentration. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a whole structure schematic view of the present application;

[0034] Figure 2 It is a structure sectional view of the present application;

[0035] Figure 3 It is a structure schematic view of the stirring unit and the driving unit of the present application;

[0036] Figure 4 It is a structure schematic view of the driving unit of the present application;

[0037] Figure 5 It is a structure schematic view of the outer drive shaft, the middle drive shaft and the inner drive shaft of the present application;

[0038] Figure 6 It is a structure schematic view of the rotating assembly of the present application;

[0039] Figure 7 It is a part structure schematic view of the rotating assembly of the present application;

[0040] Figure 8 It is a structure schematic view between the circular guide rail and the worm gear of the present application;

[0041] Figure 9 It is a structural schematic diagram of the height adjusting assembly of the present application.

[0042] Figure 10 It is a partial structural schematic diagram of the height adjusting assembly of the present application.

[0043] In the figure: 1, kettle body unit; 11, shell; 12, gradient concentration sensor group; 13, feed inlet; 14, discharge outlet; 15, protective cover;

[0044] 2, stirring unit; 21, propeller blade; 22, anchor blade; 23, turbine blade; 24, outer shaft; 25, middle shaft; 26, inner shaft;

[0045] 3, driving unit; 31, outer driving shaft; 32, middle driving shaft; 33, inner driving shaft; 34, rotating assembly; 341, support plate; 342, motor support; 343, first driving motor; 344, connecting frame; 3441, connecting rod; 345, worm; 346, gear box; 347, first gear set; 348, circular guide rail; 3481, sliding ring; 349, worm gear; 3491, spline block; 35, height adjusting assembly; 351, vertical support frame; 352, second driving motor; 353, screw rod; 354, movable frame; 355, rotating disc; 356, second gear set; 36, spline groove. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0047] The present application provides a water treatment agent mixing and stirring kettle as shown in Figures 1-4 The present application provides a water treatment agent mixing and stirring kettle as shown in

[0048] The stirring unit 2 comprises propeller blades 21, anchor blades 22 and turbine blades 23 arranged coaxially and in layers from top to bottom, wherein the inner portions of the propeller blades 21, anchor blades 22 and turbine blades 23 are respectively fixedly inserted with outer shafts 24, middle shafts 25 and inner shafts 26, the outer shafts 24, middle shafts 25 and inner shafts 26 are concentric sleeve structures, and the three can independently rotate and independently lift;

[0049] The driving unit 3 comprises an outer driving shaft 31, a middle driving shaft 32 and an inner driving shaft 33 fixedly connected with the outer shaft 24, the middle shaft 25 and the inner shaft 26 one by one, the outer driving shaft 31, the middle driving shaft 32 and the inner driving shaft 33 are concentric sleeve structures, and are connected with a rotating assembly 34 for driving the rotation thereof, and a height adjusting assembly 35 for driving the axial lifting thereof.

[0050] The outer shaft 24, the middle shaft 25 and the inner shaft 26 adopt a concentric sleeve structure and can independently rotate and independently lift, cooperate with the top-down layered propeller blade 21, anchor blade 22 and turbine blade 23, and can independently control the rotating speed and height of a certain layer of blade according to different characteristics of the medicament, for example, only start the low-speed operation of the propeller blade 21 when mixing high-molecular medicament, and start the high-speed stirring of the turbine blade 23 when mixing dissolving medicament, thereby breaking through the one-size-fits-all mixing limitation of the traditional stirring tank and greatly improving the adaptability.

[0051] The outer driving shaft 31, the middle driving shaft 32 and the inner driving shaft 33 of the driving unit 3 are fixedly connected with the shaft body of the stirring unit 2 one by one, and are respectively provided with the rotating assembly 34 and the height adjusting assembly 35, so as to realize independent control of rotation and lifting and mutual non-interference, thereby solving the problem of conflict between driving and lifting functions in the traditional equipment.

[0052] The gradient concentration sensor group 12 of the tank body unit 1 can capture the concentration distribution of the whole tank in real time, provide data support for the adjustment of the driving unit 3, form a detection, adjustment and feedback closed loop, ensure the mixing uniformity and avoid local over-concentration or under-concentration.

[0053] As shown in Figure 1 The gradient concentration sensor group 12 is composed of at least three concentration sensors distributed along the height direction of the shell 11, respectively corresponding to the upper, middle and lower regions of the shell 11, for detecting the concentration of the medicament at different heights in real time; the top of the shell 11 is provided with at least two independent feed ports 13, the bottom center is provided with a discharge port 14, the top of the shell 11 is fixedly connected with a protective cover 15, and the protective cover 15 is arranged outside the driving unit 3.

[0054] The gradient concentration sensor group 12 is composed of at least three sensors distributed along the height direction of the shell 11, respectively covering the upper, middle and lower regions, and can accurately detect the concentration of the medicament at different heights. Compared with the traditional single-point detection, the concentration gradient difference can be effectively identified, and accurate data can be provided for subsequent concentration adjustment. The top of the shell 11 is provided with at least two independent feed ports 13, different types of medicaments such as pH adjusting medicament, main medicament and auxiliary medicament can be added respectively, cross contamination during multi-medicament addition can be avoided, and the segmented addition process requirement can be met.

[0055] The protective cover 15 is arranged outside the driving unit 3, which can prevent dust and impurities from entering the rotating assembly 34 and the height adjusting assembly 35 to affect the transmission accuracy, and can avoid that the volatile gas of the medicament in the stirring process corrodes the driving components, thereby prolonging the service life of the equipment.

[0056] As shown in Figures 5-8 The rotating assembly 34 comprises a support plate 341 and three motor supports 342 fixedly installed on the side surface of the support plate 341, a first driving motor 343 is installed on the motor support 342, a connecting frame 344 is fixedly connected to the outer side of the motor support 342, a worm 345 is rotationally connected to the lower portion of the connecting frame 344, the first driving motor 343 is used to drive the worm 345 to rotate, a circular guide rail 348 is fixedly connected to the outer side of the connecting frame 344, the circular guide rail 348 is movably sleeved on the outer side of the outer driving shaft 31, the middle driving shaft 32 or the inner driving shaft 33, a worm wheel 349 is rotationally connected to the lower portion of the circular guide rail 348, and the worm 345 is meshedly connected with the worm wheel 349.

[0057] The rotating assembly 34 is configured with three independent motor supports 342 and first driving motors 343, which respectively drive the outer driving shaft 31, the middle driving shaft 32 and the inner driving shaft 33 to rotate, so as to realize independent speed regulation of the three paddles, and the single-paddle operation, double-paddle cooperation or three-paddle linkage mode can be flexibly switched according to the mixing demand; the worm 345 and the worm wheel 349 are meshedly connected for transmission, compared with the spur gear transmission, the transmission ratio is large, the operation is stable, the noise is low, the reverse rotation can be effectively prevented, the paddle rotation speed is stable, and the method is especially suitable for mixing of polymer medicaments which are sensitive to stirring intensity; the circular guide rail 348 is movably sleeved on the outer side of the driving shaft, so as to stably support the worm wheel 349, avoid meshing failure caused by component deviation during transmission, and improve the transmission reliability.

[0058] The outer side of the outer driving shaft 31, the middle driving shaft 32 and the inner driving shaft 33 is provided with an axially extending spline groove 36, a spline block 3491 is fixedly connected to the inner wall of the worm wheel 349, the spline block 3491 is slidably embedded in the spline groove 36, so as to realize torque transmission between the worm wheel 349 and the outer driving shaft 31, the middle driving shaft 32 or the inner driving shaft 33, and allow the outer driving shaft 31, the middle driving shaft 32 and the inner driving shaft 33 to axially ascend and descend relative to the worm wheel 349.

[0059] The outer driving shaft 31, the middle driving shaft 32 and the inner driving shaft 33 are provided with axially extending spline grooves 36, which are slidably embedded with spline blocks 3491 on the inner wall of the worm wheel 349, so as to realize torque transmission between the worm wheel 349 and the driving shaft, ensure effective transmission of rotating power, and allow the driving shaft to axially ascend and descend relative to the worm wheel 349, thereby perfectly compatible with the dual functions of rotation and lifting and solving the technical problem of mutual interference between the two in the traditional transmission structure. The spline connection has good directivity and can avoid deflection of the driving shaft during the ascending and descending process, thereby ensuring the accuracy of the blade height adjustment and further ensuring the stability of the mixing effect.

[0060] The gear box 346 is fixedly installed between the end of the first driving motor 343 and the end of the connecting frame 344, the end of the output shaft of the first driving motor 343 and the end of the worm 345 extend towards the inside of the gear box 346, and the first gear set 347 is arranged between the end of the output shaft of the first driving motor 343 and the end of the worm 345.

[0061] The first driving motor 343 and the worm 345 are in transmission through the gear box 346 and the first gear set 347, the transmission ratio can be adjusted according to requirements, the rotating speed of the blade can be accurately controlled, for example, the high speed of the propeller blade 21 is 100-300 r / min, and the low speed of the propeller blade 21 is 80-120 r / min; the gear box 346 plays a protective and lubricating role on the first gear set 347, reduces transmission wear, prolongs the service life of the components, reduces noise pollution, and improves the running stability of the equipment.

[0062] A plurality of connecting rods 3441 are fixedly connected between the top of the connecting frame 344 and the upper side of the circular guide rail 348, the lower side of the circular guide rail 348 is rotatably connected with a sliding ring 3481, and the sliding ring 3481 is fixed on the top of the worm wheel 349, so as to realize the rotary positioning of the worm wheel 349 relative to the circular guide rail 348.

[0063] The connecting frame 344 and the circular guide rail 348 are fixed through at least two connecting rods 3441, forming a stable support structure, avoiding deformation of the circular guide rail 348 due to uneven stress, and ensuring the installation accuracy of the worm wheel 349; the circular guide rail 348 is rotatably connected with the worm wheel 349 through the sliding ring 3481, realizing the accurate rotary positioning of the worm wheel 349 relative to the circular guide rail 348, reducing the radial runout during transmission, and improving the rotating speed stability and transmission efficiency.

[0064] As Figures 9-10As shown, the height adjusting assembly 35 comprises a vertical support frame 351 and three second driving motors 352 mounted outside the vertical support frame 351, the other side of the vertical support frame 351 is rotationally connected with three lead screws 353 corresponding to the second driving motors 352, the second driving motors 352 are used to drive the lead screws 353 to rotate, the outside of the lead screw 353 is threadedly connected with a threaded block, and the threaded block is fixedly connected with a movable frame 354, the other end of the movable frame 354 is fixedly connected with a rotating disc 355, the rotating disc 355 is rotationally sleeved with the top end of the outer driving shaft 31 or the middle driving shaft 32 or the inner driving shaft 33, and is used to drive the outer driving shaft 31, the middle driving shaft 32 and the inner driving shaft 33 to axially ascend and descend without interfering with the rotation thereof.

[0065] The height adjusting assembly 35 is configured with three independent second driving motors 352 and corresponding lead screws 353, which are used to drive the outer driving shaft 31, the middle driving shaft 32 and the inner driving shaft 33 to ascend and descend, respectively, so as to independently adjust the height of the three paddles, and the position of the paddle (such as the propeller paddle 21) can be flexibly adjusted according to the liquid level fluctuation and the concentration gradient difference (for example, the propeller paddle 21 needs to be kept 5-10 cm below the liquid surface).

[0066] The threaded connection between the lead screw 353 and the threaded block has self-locking property, which can ensure that the paddle is stably fixed after being adjusted to the target height, and avoid position deviation caused by stirring impact force.

[0067] The rotating disc 355 is rotationally sleeved with the top end of the driving shaft, which can not only transmit the lifting power, but also does not interfere with the rotation of the driving shaft, so as to realize the non-interference cooperation of lifting and rotation, and further improve the control precision of the equipment.

[0068] The end of the output shaft of the second driving motor 352 and the top end of the lead screw 353 are inserted into the inside of the vertical support frame 351, and a second gear set 356 is arranged between the end of the output shaft of the second driving motor 352 and the top end of the lead screw 353.

[0069] The second driving motor 352 and the lead screw 353 are reversely transmitted through the second gear set 356, which can convert the horizontal output power of the second driving motor 352 into the vertical rotation power of the lead screw 353, optimize the spatial layout of the height adjusting assembly 35, and avoid structural interference with the rotating assembly 34; the second gear set 356 has high transmission efficiency and accurate reversing, which can ensure the stable rotation speed of the lead screw 353, and further realize the stable adjustment of the height of the paddle, and avoid the fluctuation of the mixing state caused by the sudden change of the height.

[0070] The top end outside of the outer driving shaft 31, the middle driving shaft 32 and the inner driving shaft 33 is provided with an annular rotating groove, and the inner ring of the rotating disc 355 is embedded in the rotating groove through a bearing, so as to realize the low-friction rotation connection between the rotating disc 355 and the outer driving shaft 31 or the middle driving shaft 32 or the inner driving shaft 33.

[0071] The top end of the drive shaft is provided with an annular rotating groove, and the inner ring of the rotating disc 355 is embedded in the rotating groove through a bearing, so that the sliding friction between the rotating disc 355 and the drive shaft is converted into rolling friction, the frictional resistance is greatly reduced, the component wear is reduced, and the rotation of the drive shaft is smooth and flexible; the bearing embedding structure improves the coaxiality of the rotating disc 355 and the drive shaft, avoids the inclination of the drive shaft during lifting, ensures the stability of the blade running track, and improves the mixing uniformity.

[0072] When it is necessary to start stirring of a certain layer of blades, the first drive motor 343 of the rotating assembly 34 is started, power is transmitted to the worm 345 through the first gear set 347 in the gear box 346, the worm 345 is in meshing transmission with the worm gear 349, and the worm gear 349 is driven to rotate; since the worm gear 349 is in sliding connection with the spline groove 36 of the outer drive shaft 31 or the middle drive shaft 32 or the inner drive shaft 33 through the spline block 3491, the torque is transmitted to the drive shaft through the spline, and then the corresponding propeller blade 21 or anchor blade 22 or turbine blade 23 is driven to rotate; by controlling the rotating speed of the first drive motor 343, the rotating speed of the blade can be accurately controlled.

[0073] When the liquid level fluctuates or the concentration gradient needs to adjust the height of the blade, the second drive motor 352 of the height adjusting assembly 35 is started, power is transmitted to the lead screw 353 through the second gear set 356 in the vertical support frame 351, the lead screw 353 rotates to drive the outer threaded block to rise and fall, and the threaded block drives the rotating disc 355 to rise and fall through the movable frame 354; since the rotating disc 355 is embedded in the annular rotating groove at the top end of the outer drive shaft 31 or the middle drive shaft 32 or the inner drive shaft 33 through a bearing, the drive shaft can be driven to rise and fall axially, and then the propeller blade 21 or the anchor blade 22 or the turbine blade 23 is adjusted in height; the self-locking property of the threaded screw 353 ensures that the blade is stable at the target height and avoids deviation.

[0074] The three sensors of the gradient concentration sensor group 12 respectively detect the concentration of the medicament at the upper, middle and lower parts of the shell 11 in real time, and transmit the data to the controller; the controller calculates the concentration gradient value (the absolute value of the upper concentration and the lower concentration), if the gradient value > 0.05%, the height adjusting assembly 35 and the rotating assembly 34 are triggered to act together: for example, when the upper concentration is higher than the lower concentration, the controller instructs the corresponding second drive motor 352 of the propeller blade 21 to start, and adjusts the blade downward by 5-10 cm, at the same time, the first drive motor 343 is instructed to increase the rotating speed by 10%, and the anchor blade 22 is started to accelerate mixing, until the concentration gradient ≤ 0.03%.

[0075] A mixing method of a water treatment medicament mixing and stirring kettle, which adopts a water treatment medicament mixing and stirring kettle, and comprises the following steps:

[0076] S1. Parameter preset: according to the type of the medicament to be processed (dissolution type, mixing type, high molecular type or composite medicament), set the target parameters:

[0077] If it is a dissolution type medicament (such as corrosion and scale inhibitor): set the target rotating speed of the turbine paddle 23 to 100-300 r / min, the concentration uniformity threshold of the gradient concentration sensor group 12 is ≤0.03%, and the height adjusting assembly 35 is used to adjust the inner driving shaft 33 to drive the turbine paddle 23 to the lower cylindrical and conical transition area of the shell 11;

[0078] If it is a mixing type medicament (such as bactericide): set the target rotating speed of the anchor paddle 22 to 50-150 r / min, the concentration uniformity threshold is ≤0.03%, and the height adjusting assembly 35 is used to adjust the middle driving shaft 32 to drive the anchor paddle 22 to the middle cylindrical area of the shell 11;

[0079] If it is a high molecular type medicament (such as PAM): set the target rotating speed of the propeller paddle 21 to 80-120 r / min, the concentration uniformity threshold is ≤0.03%, and the height adjusting assembly 35 is used to adjust the outer driving shaft 31 to drive the propeller paddle 21 to the upper cylindrical area of the shell 11, and the initial position of the paddle is located 5-10 cm below the liquid surface;

[0080] If it is a composite medicament: preset the sequence and timing of medicament addition, set the addition logic of the adjusting medicament, inorganic dissolution type medicament, organic / high molecular medicament and mixing type medicament, and the interval between adjacent medicament addition is 1-5 min, and the multi-paddle cooperative timing is also preset;

[0081] S2. Linkage stirring operation: start the rotating assembly 34 corresponding to the paddle, drive the corresponding driving shaft and paddle to rotate; real-time monitor the liquid level in the shell 11, if the liquid level fluctuation causes the paddle to deviate from the optimal immersion interval, the height adjusting assembly 35 adjusts the height of the corresponding driving shaft and paddle, and synchronously fine tunes the rotating speed of the paddle, when the liquid level is too low, the rotating speed is reduced by 20%-30%, and when the liquid level is too high, the rotating speed is increased by 10%-15%;

[0082] The gradient concentration sensor group 12 real-time detects the medicament concentration of the upper, middle and lower parts of the shell 11, calculates the concentration gradient value (the absolute value of the upper concentration and the lower concentration); if the concentration gradient value is >0.05%, adjust the multi-paddle operation state according to the gradient direction: when the upper concentration is higher than the lower concentration, increase the rotating speed of the propeller paddle 21 by 10% and adjust it downward by 5-10 cm, and increase the rotating speed of the anchor paddle 22 by 15%; when the lower concentration is higher than the upper concentration, increase the rotating speed of the turbine paddle 23 by 10% and adjust it upward by 5-8 cm, and reduce the rotating speed of the propeller paddle 21 by 10%; when the concentration gradient value is >0.1%, start the multi-paddle timing cooperative stirring, first the turbine paddle 23 cooperates with the anchor paddle 22 for 3 min, then the propeller paddle 21 cooperates with the anchor paddle 22 for 2 min, until the concentration gradient is ≤0.03%;

[0083] S3. Reagent dosing and adjustment: reagents are dosed through the feed port 13 in a predetermined order, and the dosing rate is adjusted according to the real-time data of the gradient concentration sensor group 12 during the dosing process: the dosing rate is increased when the concentration is 30% lower than the target value, and the dosing rate is decreased when the concentration approaches the target value; if the reagent is pH sensitive, the pH value in the tank is monitored simultaneously, and when the pH deviates from the optimal adjustment interval, the main reagent dosing is suspended, and the pH adjusting reagent is dosed first, and the anchor paddle 22 is accelerated to mix until the pH is stable, then the main reagent dosing is resumed;

[0084] S4. Shutdown and discharge: when the gradient concentration sensor group 12 detects that the whole tank concentration is uniform and reaches the target concentration, and there is no fluctuation for 30s, the rotating assembly 34 stops corresponding paddle rotation; if the stirring is not immediately discharged after completion, the intermittent stirring mode is started, the anchor paddle 22 is started at 80r / min for 30s every 5-10min, and the turbine paddle 23 is started at 100r / min for 1min for high settlement risk reagents, until the discharge is completed.

[0085] Different types of reagents are preset with exclusive parameters (rotation speed, paddle position, concentration threshold), which realize precise adaptation of reagent type and stirring parameters, for example, high molecular reagents are stirred at low speed by the propeller paddle 21 to avoid degradation, and dissolved reagents are stirred at high speed by the turbine paddle 23 to promote dissolution, solving the poor adaptability problem of traditional methods; combined with liquid level linkage and concentration gradient linkage adjustment, the paddle height and rotation speed are corrected in real time to ensure uniform whole tank concentration (concentration gradient ≤0.03%), reduce reagent waste, and improve water treatment effect; the preset reagent dosing sequence and intermittent stirring mode not only avoid multi-reagent reaction conflicts, but also prevent reagent settlement during the standing phase, ensuring uniform discharge concentration and improving the stability of subsequent water treatment process.

[0086] Finally, it should be noted that the above-described only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A water treatment agent mixing and stirring vessel, comprising a vessel body unit (1), a stirring unit (2) disposed in the vessel body unit (1), and a driving unit (3) for driving the stirring unit (2), characterized in that, The vessel unit (1) includes a shell (11) and a gradient concentration sensor group (12) mounted on the shell (11). The stirring unit (2) includes a propulsion blade (21), an anchor blade (22), and a turbine blade (23) arranged coaxially from top to bottom. The propulsion blade (21), the anchor blade (22), and the turbine blade (23) are respectively fixedly inserted with an outer shaft (24), a middle shaft (25), and an inner shaft (26). The outer shaft (24), the middle shaft (25), and the inner shaft (26) are concentric sleeve structures, and the three can rotate and rise independently. The drive unit (3) includes an outer drive shaft (31), a middle drive shaft (32), and an inner drive shaft (33) that are fixedly connected to the outer shaft (24), the middle shaft (25), and the inner shaft (26) respectively. The outer drive shaft (31), the middle drive shaft (32), and the inner drive shaft (33) are concentric sleeve structures, and the three are connected to a rotating assembly (34) for driving their rotation, and a height adjustment assembly (35) for driving their axial lifting and lowering.

2. The water treatment agent mixing and stirring tank according to claim 1, characterized in that, The gradient concentration sensor group (12) consists of at least three concentration sensors that are gradient distributed along the height direction of the housing (11), corresponding to the upper, middle and lower regions of the housing (11) respectively, and are used to detect the concentration of the agent at different heights in real time; the top of the housing (11) is provided with at least two independent inlets (13), the bottom center is provided with an outlet (14), and a protective cover (15) is fixedly connected to the top of the housing (11), and the protective cover (15) is placed on the outside of the drive unit (3).

3. The water treatment agent mixing and stirring tank according to claim 1, characterized in that, The rotating assembly (34) includes a support plate (341) and three motor brackets (342) fixedly installed on the side of the support plate (341). A first drive motor (343) is installed on the motor bracket (342). A connecting frame (344) is fixedly connected to the outside of the motor bracket (342). A worm gear (345) is rotatably connected to the bottom of the connecting frame (344). The first drive motor (343) is used to drive the worm gear (345) to rotate. A circular guide rail (348) is fixedly connected to the outside of the connecting frame (344). The circular guide rail (348) is movably sleeved on the outside of the outer drive shaft (31), the middle drive shaft (32), or the inner drive shaft (33). A worm wheel (349) is rotatably connected to the bottom of the circular guide rail (348). The worm gear (345) is meshed with the worm wheel (349).

4. The water treatment agent mixing and stirring tank according to claim 3, characterized in that, The outer drive shaft (31), the middle drive shaft (32) and the inner drive shaft (33) are all provided with axially extending spline grooves (36). A spline block (3491) is fixedly connected to the inner wall of the worm gear (349). The spline block (3491) is slidably embedded in the spline groove (36) to realize the torque transmission between the worm gear (349) and the outer drive shaft (31) or the middle drive shaft (32) or the inner drive shaft (33), and to allow the outer drive shaft (31), the middle drive shaft (32) and the inner drive shaft (33) to move axially relative to the worm gear (349).

5. The water treatment agent mixing and stirring tank according to claim 3, characterized in that, A gearbox (346) is fixedly installed between the end of the first drive motor (343) and the end of the connecting frame (344). The end of the output shaft of the first drive motor (343) and the end of the worm (345) both extend into the gearbox (346), and a first gear set (347) is provided between the end of the output shaft of the first drive motor (343) and the end of the worm (345).

6. The water treatment agent mixing and stirring tank according to claim 3, characterized in that, Multiple connecting rods (3441) are fixedly connected between the top of the connecting frame (344) and the top of the circular guide rail (348). A sliding ring (3481) is rotatably connected to the bottom of the circular guide rail (348). The sliding ring (3481) is fixed to the top of the worm gear (349) to realize the rotational positioning of the worm gear (349) relative to the circular guide rail (348).

7. The water treatment agent mixing and stirring tank according to claim 1, characterized in that, The height adjustment assembly (35) includes a vertical support frame (351) and three second drive motors (352) installed on the outside of the vertical support frame (351). The other side of the vertical support frame (351) is rotatably connected to three lead screws (353) corresponding to the second drive motors (352). The second drive motors (352) are used to drive the lead screws (353) to rotate. The outer side of the lead screw (353) is threaded with a threaded block, and the threaded block is fixedly connected to a movable frame (354). The other end of the movable frame (354) is fixedly connected to a rotating disk (355). The rotating disk (355) is rotatably sleeved with the top end of the outer drive shaft (31), the middle drive shaft (32), or the inner drive shaft (33) to drive the outer drive shaft (31), the middle drive shaft (32), and the inner drive shaft (33) to rise and fall axially without interfering with their rotation.

8. The water treatment agent mixing and stirring tank according to claim 7, characterized in that, The end of the output shaft of the second drive motor (352) and the top of the lead screw (353) are both inserted into the interior of the vertical support frame (351), and a second gear set (356) is provided between the end of the output shaft of the second drive motor (352) and the top of the lead screw (353).

9. The water treatment agent mixing and stirring tank according to claim 7, characterized in that, The outer drive shaft (31), middle drive shaft (32), and inner drive shaft (33) are all provided with annular rotating grooves on their top outer sides. The inner ring of the rotating disk (355) is embedded in the rotating groove through a bearing, so as to realize the low-friction rotating connection between the rotating disk (355) and the outer drive shaft (31), middle drive shaft (32), or inner drive shaft (33).

10. A mixing method for a water treatment agent mixing and stirring tank, comprising the water treatment agent mixing and stirring tank according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Parameter Preset: Set target parameters according to the type of reagent to be processed: If it is a dissolving agent: set the target rotation speed of the turbine blade (23) to 100-300 r / min, the uniform concentration threshold of the gradient concentration sensor group (12) to ≤0.03%, and adjust the inner drive shaft (33) to drive the turbine blade (23) to the lower cylindrical and conical transition area of ​​the housing (11) through the height adjustment component (35); If it is a mixed agent: set the target rotation speed of the anchor blade (22) to 50-150 r / min, the concentration uniformity threshold to ≤0.03%, and adjust the drive shaft (32) through the height adjustment component (35) to drive the anchor blade (22) to the cylindrical area in the middle of the shell (11); If it is a polymeric agent: set the target rotation speed of the propeller blade (21) to 80-120 r / min, the concentration uniformity threshold to ≤0.03%, and adjust the external drive shaft (31) through the height adjustment component (35) to drive the propeller blade (21) to the upper cylindrical area of ​​the shell (11), and the initial position of the blade is 5-10 cm below the liquid surface; For compound agents: preset the agent addition order and timing, set the addition logic for regulating agents, inorganic dissolving agents, organic / polymer agents and mixed agents, with an interval of 1 to 5 minutes between adjacent agent additions, and preset the multi-blade synergy timing; S2. Linked stirring operation: Start the corresponding blade rotation component (34) to drive the corresponding drive shaft and blade to rotate; monitor the liquid level in the housing (11) in real time. If the liquid level fluctuation causes the blade to deviate from the optimal immersion range, the height adjustment component (35) adjusts the height of the corresponding drive shaft and blade, and simultaneously fine-tunes the blade speed. When the liquid level is too low, the speed is reduced by 20% to 30%, and when the liquid level is too high, the speed is increased by 10% to 15%. The gradient concentration sensor group (12) detects the concentration of the agent in the upper, middle and lower parts of the shell (11) in real time and calculates the concentration gradient value. If the concentration gradient value is >0.05%, the multi-blade operation state is adjusted according to the gradient direction: when the upper concentration is higher than the lower concentration, the speed of the propeller blade (21) is increased by 10% and adjusted downward by 5-10cm, while the speed of the anchor blade (22) is increased by 15%; when the lower concentration is higher than the upper concentration, the speed of the turbine blade (23) is increased by 10% and adjusted upward by 5-8cm, while the speed of the propeller blade (21) is decreased by 10%; when the concentration gradient value is >0.1%, the multi-blade sequential coordinated stirring is started. First, the turbine blade (23) cooperates with the anchor blade (22) for 3 minutes, then the propeller blade (21) cooperates with the anchor blade (22) for 2 minutes, until the concentration gradient is ≤0.03%. S3. Dosing and Adaptation of Agents: Agents are added through the feed inlet (13) in a preset order. During the dosing process, the dosing acceleration rate is adjusted according to the real-time data of the gradient concentration sensor group (12): the dosing acceleration rate is increased when the concentration is 30% lower than the target value, and the dosing acceleration rate is decreased when it is close to the target value. If it is a pH-sensitive agent, the pH value in the reactor is monitored simultaneously. When the pH deviates from the optimal adaptation range, the main agent dosing is suspended, and the pH adjustment agent is added first. The main agent dosing is resumed after the pH is stabilized by the anchor blade (22). S4. Shutdown and discharge: When the gradient concentration sensor group (12) detects that the concentration of the whole vessel is uniform and reaches the target concentration, and there is no fluctuation for 30 seconds, the control rotation component (34) stops the corresponding blade rotation; if the material is not discharged immediately after the stirring is completed, the intermittent stirring mode is started, and the anchor blade (22) is started every 5 to 10 minutes to stir at 80 r / min for 30 seconds, and the high sedimentation risk agent is superimposed with the turbine blade (23) to stir at 100 r / min for 1 minute until the discharge is completed.

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