CN120155156B - Polymerization reaction device and production method for producing polyaluminium sulfate flocculant - Google Patents
Polymerization reaction device and production method for producing polyaluminium sulfate flocculantInfo
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- CN120155156B CN120155156B CN202510508120.0A CN202510508120A CN120155156B CN 120155156 B CN120155156 B CN 120155156B CN 202510508120 A CN202510508120 A CN 202510508120A CN 120155156 B CN120155156 B CN 120155156B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0086—Processes carried out with a view to control or to change the pH-value; Applications of buffer salts; Neutralisation reactions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/02—Feed or outlet devices; Feed or outlet control devices for feeding measured, i.e. prescribed quantities of reagents
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
本发明属于废水处理技术领域，具体的说是一种聚合硫酸铝絮凝剂生产用聚合反应装置及生产方法，包括：底座；反应釜，所述反应釜由上罐体和下罐体组合形成，所述上罐体顶部固定有排气管，所述下罐体上部侧边对称固定有进料管；混合结构，所述混合结构设置在反应釜中间，所述混合结构转动安装在上罐体中间下方，所述混合结构包括驱动轴，驱动轴的侧边均布有搅拌杆，所述上罐体顶部固定有用于驱动混合结构旋转的电机；刮除组件，所述刮除组件安装在驱动轴上，通过驱动轴驱动刮除组件旋转，以清理反应釜内部混合溶液顶部泡沫；本发明通过设置刮除组件清理混合溶液表面的泡沫，使得反应过程中产生的气体顺畅的从溶液内部向上排出，促使反应稳定进行。
This invention belongs to the field of wastewater treatment technology, specifically a polymerization reaction apparatus and production method for producing polyaluminum sulfate flocculant, comprising: a base; a reaction vessel, which is formed by combining an upper tank and a lower tank, wherein an exhaust pipe is fixed to the top of the upper tank and feed pipes are symmetrically fixed to the upper side of the lower tank; a mixing structure, which is disposed in the middle of the reaction vessel and is rotatably mounted below the middle of the upper tank, the mixing structure including a drive shaft, with stirring rods evenly distributed on the side of the drive shaft, and a motor for driving the rotation of the mixing structure fixed to the top of the upper tank; and a scraping assembly, which is mounted on the drive shaft and driven to rotate to clean the foam on the top of the mixed solution inside the reaction vessel; this invention, by setting up a scraping assembly to clean the foam on the surface of the mixed solution, allows the gas generated during the reaction to be smoothly discharged upward from the inside of the solution, promoting stable reaction.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a polymerization reaction device and a production method for producing a polyaluminium sulfate flocculant.
Background
Polyaluminium sulfate is a common inorganic flocculant and is widely applied to the fields of water treatment, wastewater treatment, drinking water purification and the like. Through polymerization reaction, the polyaluminium sulfate can effectively remove suspended matters, bacteria and other pollutants in water, and is widely applied to the fields of environmental protection and industry. The production of polyaluminium sulphate generally involves the reaction of an aluminium salt with a sulfuric acid solution, in which bauxite and concentrated sulfuric acid are often the main raw materials. In this process, after the bauxite slurry and sulfuric acid solution are mixed, gases such as sulfur dioxide, water vapor, etc. are generated, and these gases may form bubbles during stirring and cause accumulation on the liquid surface to form a foam layer.
The formation of a foam layer can adversely affect the reaction system. The foam layer may block or encapsulate the gases in the reaction, making it difficult to effectively diffuse out, resulting in an accumulation of gas concentration in the reaction system, thereby affecting the reaction rate and reaction equilibrium. The accumulation of gases may not only lead to instability of the reaction process, but may also lead to reduced production efficiency and even to safety hazards.
To solve this problem, the prior art generally adopts physical or chemical methods for foam treatment, such as adding foam inhibitors, adjusting reaction conditions, etc., which although alleviating the foam problem to some extent, still have room for improvement due to limited effectiveness and possible introduction of additional chemicals or increased production costs.
Therefore, the invention provides a polymerization reaction device and a production method for producing a polyaluminum sulfate flocculant.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is that the polymerization reaction device for producing the polyaluminum sulfate flocculant comprises the following components:
A base;
The reaction kettle is formed by combining an upper tank body and a lower tank body, an exhaust pipe is fixed at the top of the upper tank body, feeding pipes are symmetrically fixed on the side edges of the upper part of the lower tank body, and a discharging pipe is fixed at the bottom of the lower tank body;
The mixing structure is arranged in the middle of the reaction kettle, the mixing structure is rotatably arranged below the middle of the upper tank body, the mixing structure comprises a driving shaft, stirring rods are uniformly distributed on the side edges of the driving shaft, and a motor for driving the mixing structure to rotate is fixed at the top of the upper tank body;
The scraping assembly is arranged on the driving shaft, the scraping assembly is driven to rotate through the driving shaft so as to clean foam at the top of the mixed solution inside the reaction kettle, the scraping assembly comprises a connecting sleeve arranged on the driving shaft, a scraper is detachably arranged on the side edge of the connecting sleeve, a through groove is formed in the middle of the scraper, a filtering assembly is arranged in the middle of the through groove, interception blocks are arranged at the openings at the two ends of the through groove, and the interception blocks are arranged into hollow grid shapes.
Preferably, the driving shaft is provided with a square rod, the connecting sleeve is matched with the square rod, the connecting sleeve is slidably sleeved on the square rod, and a floating plate is arranged in the through groove of the scraping plate.
Preferably, the filter component is provided with a pair of, filter component symmetry installs in logical groove middle part both sides, the kickboard sets up in the middle of the filter component of both sides, be provided with the sleeve pipe on the filter component, sealed slidable mounting has the connecting rod in the middle of the sleeve pipe, connecting rod one end and kickboard fixed connection, the connecting rod other end is fixed with the movable frame that is used for the extrusion interception piece.
Preferably, the upper side and the lower side of the scraping plate are respectively provided with a water outlet groove, and a first filter membrane is fixed in the water outlet groove.
Preferably, the filter component comprises a mounting frame, a pair of filter membrane II is installed in the middle of the mounting frame, the sleeve is fixed in the middle of the filter membrane II, movable plates are respectively fixed at the upper end and the lower end of the filter membrane II, the movable plates are arranged in sliding cavities formed in the inner walls of the mounting frame in a sliding mode, a first spring is fixed between the movable plates and the inner walls of the sliding cavities, two sides of the filter membrane II are provided with movable rods in the middle of the filter membrane II, one ends of the movable rods are fixedly connected with the movable plates, a second magnetic block is fixed at the other ends of the movable rods, the second magnetic block is adjacent to the sliding sleeve, a plurality of first magnetic blocks are uniformly distributed in the connecting rods, and the first magnetic blocks repel the second magnetic blocks.
Preferably, the scraper blade tip is laminated with reation kettle inside, the scraper blade has been kept away from the movable chamber in the middle of the tip of square pole, rotate in the middle of the movable chamber and install the spliced pole, the spliced pole middle part is fixed with the gyro wheel, gyro wheel and reation kettle inner wall butt, the spliced pole bottom sets up to the slope form, be fixed with the staving of bottom for opening the form in the logical groove of scraper blade, sealed slidable mounting has the piston plate in the middle of the staving, the piston plate bottom is fixed with the slide bar, slide bar bottom slip grafting is in the square hole of seting up in the scraper blade bottom, the slide bar side is fixed with the depression bar of L type, the one end that the slide bar was kept away from to the depression bar and spliced pole bottom inclined plane edge butt rotate, the depression bar below is provided with the spring second that makes the depression bar reset, the through-hole has been seted up on the piston plate, the through-hole top is installed through the torsional spring rotation, scraper blade top both sides symmetry is fixed with the aqueduct, the aqueduct side is fixed with a plurality of shower nozzles, the staving top is fixed with the three-way through pipe both ends and both sides are connected with the aqueduct through the one-way pipe.
Preferably, the top of the lower tank body is fixed with a supporting ring, the bottom end of the upper tank body is clamped in the supporting ring, and a sealing ring is arranged inside the supporting ring.
Preferably, the driving assembly comprises a connecting frame fixed at the top of the upper tank body, and hydraulic cylinders for driving the connecting frame to move up and down are symmetrically arranged at two ends of the base.
Preferably, one side of the interception block away from the movable frame is fixedly provided with a mounting frame, and the mounting frame is fixedly connected with the scraping plate through bolts.
The production method of the polyaluminum sulfate flocculant adopts the polymerization reaction device for producing the polyaluminum sulfate flocculant, and comprises the following steps of:
S1, performing preliminary crushing on bauxite by using a crusher to ensure that bauxite particles reach the required granularity, conveying the crushed bauxite into a grinding machine for grinding, and grinding to a specified particle size;
S2, adding the ground bauxite and sulfuric acid into an acid treatment tank according to a set proportion, and carrying out an acidification reaction to obtain bauxite slurry;
s3, putting the acidified bauxite slurry and sulfuric acid solution into a reaction kettle according to a set proportion, and controlling the pH value, the temperature and the reaction time in the reaction kettle to enable aluminum element in the bauxite to react with sulfuric acid to form polyaluminium sulfate;
S4, starting a mixing structure, stirring the mixed solution to uniformly mix materials, and improving the reaction speed;
s5, synchronously driving the scraping assembly to rotate, scraping foam and impurities gathered on the surface of the mixed solution so as to release gas generated in the reaction process, and guiding the gas out through an exhaust pipe to collect the gas;
and S6, after the polymerization reaction is finished, maintaining the temperature during the reaction, stopping stirring, curing, and filtering after the curing is finished to obtain the polyaluminium sulfate flocculant.
The beneficial effects of the invention are as follows:
1. The invention discloses a polymerization reaction device and a production method for producing a polyaluminium sulfate flocculant, wherein a mixing structure and a scraping assembly are arranged, a motor drives a driving shaft and a stirring rod to rotate so as to stir mixed solution, the driving shaft synchronously drives a scraping plate to move in the rotating process, the scraping plate scrapes foam on the surface of the mixed solution through rotation, the foam layer is prevented from being formed on the surface of a foam aggregation solution, gas generated in the reaction process is prevented from being discharged upwards from the solution, the influence of gas aggregation on the reaction process is avoided, the foam is contacted with an interception block firstly in the moving process of the scraping plate, the foam enters gaps of the interception block under the impact of the solution, and water flow can pull the foam so as to break the foam, so that the gas in the foam is discharged.
2. The invention discloses a polymerization reaction device and a production method for producing a polymeric aluminum sulfate flocculant, which are characterized in that a motor is used for driving a mixing structure and a scraping plate to intermittently rotate forwards or reversely, so that bauxite pulp and sulfuric acid solution can be fully mixed, the mixing effect is improved, in addition, when the scraping plate rotates clockwise, a floating plate is pushed by water flow to move in the direction opposite to the moving direction of the scraping plate, and then a movable frame is driven by a connecting rod to move, at the moment, an interception block opposite to the moving direction of the floating plate is contacted with foam, the interception block on the other side is extruded and contracted by the movable frame, and in the same way, when the scraping plate rotates anticlockwise, the water flow pushes the floating plate to move reversely, and the interception block which is previously contacted with the foam is extruded by the movable frame, so that gaps of grid structures in the interception block are contracted, thus foam entering the gaps in the interception block can be crushed, gas in the foam is further released, and impurities can be bound in the interception block, and the impurities are prevented from being punched out in the reverse rotation process.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a partial cross-sectional view of the present invention;
FIG. 3 is a schematic view of the scraping assembly of the present invention;
fig. 4 is a cross-sectional view of a doctoring assembly of the present invention;
FIG. 5 is an enlarged view at A in FIG. 4;
FIG. 6 is a partial cross-sectional view of the doctoring assembly of the present invention;
FIG. 7 is an enlarged view at B in FIG. 6;
FIG. 8 is a schematic view of the structure of the movable frame and the intercept block of the present invention;
FIG. 9 is a front view of the present invention;
fig. 10 is a flow chart of the method of the present invention.
In the figure, 1, a base, 2, an upper tank body, 3, a lower tank body, 4, a hydraulic cylinder, 5, a connecting frame, 6, an exhaust pipe, 7, a mixing structure, 8, a square rod, 9, a scraping component, 10, a connecting sleeve, 11, a scraping plate, 12, an interception block, 13, a mounting frame, 14, a filter membrane I, 15, a movable frame, 16, a filter membrane II, 17, a floating plate, 18, a sleeve, 19, a connecting rod, 20, a magnet I, 21, a movable rod, 22, a magnet II, 23, a mounting frame, 24, a movable plate, 25, a spring I, 26, a barrel body, 27, a unidirectional pipe, 28, a water guide pipe, 29, a spray head, 30, a piston plate, 31, a through hole, 32, a turning plate, a slide rod, 34, a spring II, 35, a compression rod, 36, a rotating column, 37, a roller, 38, a support ring, 39 and a sealing ring.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Embodiment one as shown in fig. 1 to 9, a polymerization reaction device for producing a polyaluminum sulfate flocculant according to an embodiment of the present invention includes:
a base 1;
the reaction kettle is formed by combining an upper tank body 2 and a lower tank body 3, an exhaust pipe 6 is fixed at the top of the upper tank body 2, feeding pipes are symmetrically fixed on the side edge of the upper part of the lower tank body 3, and a discharging pipe is fixed at the bottom of the lower tank body 3;
the mixing structure 7 is arranged in the middle of the reaction kettle, the mixing structure 7 is rotatably arranged below the middle of the upper tank body 2, the mixing structure 7 comprises a driving shaft, stirring rods are uniformly distributed on the side edge of the driving shaft, and a motor for driving the mixing structure 7 to rotate is fixed at the top of the upper tank body 2;
The scraping assembly 9 is arranged on the driving shaft, the scraping assembly 9 is driven to rotate through the driving shaft so as to clean foam at the top of the mixed solution in the reaction kettle, the scraping assembly 9 comprises a connecting sleeve 10 arranged on the driving shaft, a scraping plate 11 is detachably arranged on the side edge of the connecting sleeve 10, a through groove is formed in the middle of the scraping plate 11, a filtering assembly is arranged in the middle of the through groove, interception blocks 12 are arranged at openings at two ends of the through groove, the interception blocks 12 are arranged in a hollowed grid shape, and the interception blocks 12 are formed by coiling acid-resistant thin steel wires;
During operation, the bauxite is first crushed in crusher to ensure that the bauxite particle reaches required size, the crushed bauxite is then ground in grinder to reach required size, the bauxite particle size is required to be in certain range to ensure that the bauxite can react with sulfuric acid, and the ground bauxite and sulfuric acid are then added into acid treating tank in certain proportion to perform acidification reaction. The process is mainly used for dissolving bauxite in bauxite to generate an aluminum salt solution, controlling the temperature and the acid concentration in a tank in the acidification process to improve the dissolution efficiency of the bauxite, then throwing the acidified bauxite slurry and the sulfuric acid solution into a reaction kettle according to a set proportion through a feed pipe, controlling the pH value, the temperature and the reaction time in the reaction kettle (adjusting the pH value by adding an alkaline solution and controlling the reaction temperature by the existing heating setting), ensuring that aluminum element in the bauxite reacts with sulfuric acid fully to form polyaluminium sulfate, and the reaction process needs to be continued for a period of time to promote the polymerization reaction of aluminum salt to generate high-efficiency polyaluminium sulfate, and finally leading the produced polyaluminium sulfate out from a discharge pipe at the bottom of a lower tank body 3;
The scraper 11 is synchronously driven to move in the rotation process of the driving shaft, the scraper 11 is used for cleaning foam on the surface of the mixed solution through rotation, so that foam layer formation on the surface of the foam aggregation solution is avoided, gas generated in the reaction process is prevented from being discharged upwards from the inside of the solution, the influence of gas aggregation on the reaction process is avoided, the reaction can be stably carried out, and then the gas is led out and collected through the exhaust pipe 6;
Through arranging the hollow grid-shaped interception blocks 12 on two sides of the through groove in the middle of the scraping plate 11, foam is contacted with the interception blocks 12 firstly in the movement process of the scraping plate 11, under the impact of a solution, the foam enters a gap of the interception blocks 12, a second filter membrane 16 arranged in the middle of the through groove allows water to pass through, water flow can pull the foam so as to break the foam, thus gas in the foam is discharged, and in addition, the grid-shaped interception blocks 12 can collect impurities on the surface of the solution, bind the impurities in the gap of the interception blocks 12, and avoid the re-sedimentation of the impurities in the mixing stirring process, so that the complexity of subsequent filtering operation is reduced.
The driving shaft is provided with a square rod 8, the connecting sleeve 10 is matched with the square rod 8, the connecting sleeve 10 is slidably sleeved on the square rod 8, a floating plate 17 is arranged in a through groove of the scraping plate 11, when the scraper is in operation, the floating force of the scraping plate 11 can be effectively increased through the arrangement of the floating plate 17, the surface of a mixed solution is kept in a stable floating state, in the operation process, the liquid level of the mixed solution can possibly fluctuate, and the floating plate 17 can automatically adjust the floating force along with the change of the liquid level, so that the scraper is suitable for different working environments, and the higher scraping effect and the working stability are maintained.
The filter assembly is provided with a pair of filter assemblies, the filter assemblies are symmetrically arranged on two sides of the middle of the through groove, the floating plates 17 are arranged in the middle of the filter assemblies on the two sides, the filter assemblies are provided with sleeves 18, a connecting rod 19 is arranged in the middle of each sleeve 18 in a sealing sliding manner, one end of each connecting rod 19 is fixedly connected with the corresponding floating plate 17, and the other end of each connecting rod 19 is fixedly provided with a movable frame 15 for extruding the corresponding interception block 12;
When the device works, the motor is a positive and negative motor, and the motor can be controlled to drive the mixing structure 7 and the scraping plate 11 to intermittently rotate positively or reversely, so that bauxite pulp and sulfuric acid solution can be fully mixed, and the mixing effect is improved; in addition, when the scraper 11 rotates clockwise, the floating plate 17 moves in the direction opposite to the movement direction of the scraper 11 under the pushing of water flow, the movable frame 15 is driven to move through the connecting rod 19, the interception block 12 opposite to the movement direction of the floating plate 17 is in contact with foam at the moment, the interception block 12 on the other side is extruded and contracted by the movable frame 15, and similarly, when the scraper 11 rotates anticlockwise, the water flow pushes the floating plate 17 to move reversely, the interception block 12 in contact with foam is extruded by the movable frame 15, so that the gaps of the grid structure inside the interception block 12 are contracted, foam entering the gaps inside the interception block 12 can be crushed, gas in the foam is further released, and meanwhile, impurities can be tightly bound inside the interception block 12, so that the impurities are prevented from being washed out in the reverse rotation process.
The upper side and the lower side of the scraping plate 11 are respectively provided with a water outlet groove, a first filter membrane 14 is fixed in the water outlet grooves, and when the scraper is in operation, the first filter membrane 14 is arranged so that the solution in the middle of the scraping plate 11 is discharged outwards.
The filter assembly comprises a mounting frame 23, a pair of filter membranes II 16 are mounted in the middle of the mounting frame 23, a sleeve 18 is fixed at the middle position of the filter membranes II 16, movable plates 24 are respectively fixed at the upper end and the lower end of the filter membranes II 16, the movable plates 24 are slidably arranged in sliding cavities formed in the inner walls of the mounting frame 23, a first spring 25 is fixed between the movable plates 24 and the inner walls of the sliding cavities, movable rods 21 are arranged at the middle of the filter membranes II 16 at two sides, one ends of the movable rods 21 are fixedly connected with the movable plates 24, second magnetic blocks 22 are fixed at the other ends of the movable rods 21, the second magnetic blocks 22 are adjacent to sliding sleeves, a plurality of first magnetic blocks 20 are uniformly distributed in the connecting rods 19, and the first magnetic blocks 20 and the second magnetic blocks 22 repel each other;
When the scraper 11 is controlled to rotate forwards and reversely, the connecting rod 19 slides reciprocally along the sleeve 18, the connecting rod 19 synchronously drives the first magnet block 20 to move, when the first magnet block 20 moves to be aligned with the second magnet block 22, the movable rod 21 is pushed to move away from the connecting rod 19 by repulsive force, the movable plate 24 is driven to move, the first spring 25 is compressed, when the first magnet block 20 and the second magnet block 22 are misplaced, the first spring 25 rebounds, the movable plate 24 and the movable rod 21 are synchronously driven to move reversely, and the filter membrane 16 is continuously dithered through the up-and-down repeated movement of the movable plate 24 so as to shake off impurities attached to the surface of the filter membrane 16, so that the filter membrane 16 keeps good filter residue performance, and when the scraper 11 and the solution are switched forwards and reversely, the relative movement direction of the filter membrane 16 is changed so that the impurities attached to the surface of the filter membrane 16 is further removed by backwashing the filter membrane 16 through the solution.
The end of the scraping plate 11 is attached to the inside of the reaction kettle, a movable cavity is formed in the middle of the end, far away from the square rod 8, of the scraping plate 11, a rotary column 36 is rotatably installed in the middle of the movable cavity, a roller 37 is fixed in the middle of the rotary column 36, the roller 37 is abutted to the inner wall of the reaction kettle, the bottom end of the rotary column 36 is inclined, a bucket body 26 with an open bottom is fixed in a through groove of the scraping plate 11, a piston plate 30 is slidably installed in the middle of the bucket body 26 in a sealing manner, a sliding rod 33 is fixed at the bottom of the piston plate 30, the bottom end of the sliding rod 33 is slidably inserted in a square hole formed in the bottom of the scraping plate 11, an L-shaped pressing rod 35 is fixed on the side edge of the sliding rod 33, one end, far away from the sliding rod 33, of the pressing rod 35 is abutted to the inclined surface edge of the bottom end of the rotary column 36, a spring 34 for enabling the pressing rod 35 to reset is arranged below the pressing rod 35, a through hole 31 is formed in the upper portion of the piston plate 30, a turning plate 32 is rotatably installed through a torsion spring, water guide pipes 28 are symmetrically fixed on the two sides of the top of the scraping plate 11, side edges of the water guide pipes 28 are fixedly connected with two-way pipes 28 through the two-way nozzles 29, and the two-way water guide pipes 27 are uniformly distributed on the top of the three-way pipe 27; during operation, in the process of movement of the scraper 11, the roller 37 at the end part of the scraper 11 can roll along the inner wall of the reaction kettle, so as to drive the rotary column 36 to rotate, the pressing rod 35 and the sliding rail are driven to reciprocate up and down through the cooperation of the chamfer surface at the bottom of the rotary column 36 and the second spring 34, so as to drive the piston plate 30 to reciprocate up and down, when the piston plate 30 moves down, the lower solution can push the turning plate 32 to rotate upwards and open through the through hole 31, so that the solution enters the barrel 26, when the piston plate 30 moves upwards, the turning plate 32 is covered above the through hole 31 under the action of water pressure, at this time, the piston plate 30 and the turning plate 32 move upwards to press the solution in the barrel 26 into the water guide pipe 28 through the one-way pipe 27, and the solution is sprayed at the contact position of the interception block 12 and the foam through the spray nozzle 29, so that the foam is washed, and the foam removal efficiency is improved.
The top of the lower tank body 3 is fixed with a support ring 38, the bottom end of the upper tank body 2 is clamped in the support ring 38, a sealing ring 39 is arranged in the support ring 38, and when the tank is in operation, the sealing ring 39 is arranged so as to increase the air tightness of the connection position of the upper tank body 2 and the lower tank body 3.
The driving assembly comprises a connecting frame 5 fixed at the top of the upper tank body 2, hydraulic cylinders 4 for driving the connecting frame 5 to move up and down are symmetrically arranged at two ends of the base 1, and when the driving assembly works, the connecting frame 5 can be driven to move up through the hydraulic cylinders 4 to open the upper tank body 2, and at the moment, the scraping plate 11 can be detached from the connecting sleeve 10 to clean and maintain the internal structure of the scraping plate 11 so as to be reused.
In the second embodiment, as shown in fig. 9, in the first comparative embodiment, in another embodiment of the present invention, a mounting frame 13 is fixed on a side of the interception block 12 away from the movable frame 15, the mounting frame 13 is fixedly connected with the scraping plate 11 through a bolt, and in operation, the interception block 12 is mounted on the scraping plate 11 through a bolt structure, so that the interception block 12 is convenient to be dismounted.
As shown in fig. 10, a method for producing a polymeric aluminum sulfate flocculant, which adopts the above-mentioned polymerization reaction device for producing a polymeric aluminum sulfate flocculant, comprises the following steps:
S1, performing preliminary crushing on bauxite by using a crusher to ensure that bauxite particles reach the required granularity, conveying the crushed bauxite into a grinding machine for grinding, and grinding to a specified particle size;
S2, adding the ground bauxite and sulfuric acid into an acid treatment tank according to a set proportion, and carrying out an acidification reaction to obtain bauxite slurry;
s3, putting the acidified bauxite slurry and sulfuric acid solution into a reaction kettle according to a set proportion, and controlling the pH value, the temperature and the reaction time in the reaction kettle to enable aluminum element in the bauxite to react with sulfuric acid to form polyaluminium sulfate;
S4, starting a mixing structure 7, and stirring the mixed solution to uniformly mix materials and improve the reaction speed;
S5, synchronously driving the scraping assembly 9 to rotate, scraping foam and impurities gathered on the surface of the mixed solution so as to release gas generated in the reaction process, and guiding the gas out through the exhaust pipe 6 for collection;
and S6, after the polymerization reaction is finished, maintaining the temperature during the reaction, stopping stirring, curing, and filtering after the curing is finished to obtain the polyaluminium sulfate flocculant.
The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
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