CN114749069A - Preparation method of cement water reducing agent - Google Patents
Preparation method of cement water reducing agent Download PDFInfo
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- CN114749069A CN114749069A CN202210274072.XA CN202210274072A CN114749069A CN 114749069 A CN114749069 A CN 114749069A CN 202210274072 A CN202210274072 A CN 202210274072A CN 114749069 A CN114749069 A CN 114749069A
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- reducing agent
- water reducing
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 65
- 239000004568 cement Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 238000003756 stirring Methods 0.000 claims abstract description 328
- 239000000654 additive Substances 0.000 claims abstract description 22
- 230000000996 additive effect Effects 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 18
- 238000001125 extrusion Methods 0.000 claims description 15
- 239000012535 impurity Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000006277 sulfonation reaction Methods 0.000 claims description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 9
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 238000006482 condensation reaction Methods 0.000 claims description 3
- 150000001990 dicarboxylic acid derivatives Chemical class 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
- 239000003999 initiator Substances 0.000 claims description 3
- 229910001379 sodium hypophosphite Inorganic materials 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002585 base Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- 238000007373 indentation Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention relates to the technical field of cement additive preparation, in particular to a cement water reducing agent preparation method, which is completed by matching water reducing agent stirring equipment, wherein the water reducing agent stirring equipment comprises a stirring kettle, a stirring part is arranged at the central axis position in the stirring kettle, the upper end of the stirring part penetrates through the stirring kettle and is connected with the upper side surface of the stirring kettle, a stacking plate is arranged in the lower end of the stirring kettle, the lower end of the stirring part penetrates through the stacking plate and is in sealing fit with the stacking plate, and bottom stirring rods are symmetrically arranged on the outer side surface of the lower end of the stirring part and above the stacking plate. According to the invention, the additive solution in the stirring kettle is stirred by adopting the mode of angle adjustment and up-and-down movement of the stirring rod, so that the additive solution cannot be layered, and the problems that the layering phenomenon is caused when the stirring blade is only arranged through a model and cannot stir the solution, the motor is burdened due to the overlarge stirring blade and the like are solved.
Description
Technical Field
The invention relates to the technical field of cement additive preparation, in particular to a preparation method of a cement water reducing agent.
Background
The cement water reducing agent plays a role in dispersing cement particles, can improve the workability of cement and reduce unit water consumption, thereby improving the fluidity of concrete mixtures. The appearance form of the cement water reducing agent is divided into water agent and powder; the water reducing agent is divided into a common water reducing agent, a high-efficiency water reducing agent and a high-performance water reducing agent according to the water reducing and enhancing capabilities of the water reducing agent.
The cement water reducer is prepared by stirring an additive in the preparation process, and then the raw materials are subjected to the operation steps of sulfonation, condensation and the like, and the additive is added in the steps to obtain the water reducer; the problem of uneven solution mixing caused by the large size of the stirring tank body when the additive solution of the water reducing agent is stirred; also have the technical scheme of solution to above-mentioned problem prior art, chinese utility model patent like publication number CN215996670U discloses a water-reducing agent reation kettle of stirring, and this utility model patent adopts the stirring leaf of V type structure to promote the raw materials and removes to the raw materials from the through-hole position through the back, the bottom raw materials upwards sprays and the top raw materials sprays downwards, can realize that tank body upper raw materials mixes with lower floor's raw materials, avoids the stratification phenomenon to take place.
Stirring to current cement water reducer additive has following problem, the layering phenomenon that produces when the stirring leaf only can not enough solution stirring through figurative setting, and the stirring leaf is too big can cause the burden to the motor, can produce granule debris among the water reducer stirring process, a large amount of debris can influence the subsequent stirring of solution, present general practice is got rid of debris behind the solution stand, this kind of mode can make the preparation efficiency of water reducer reduce.
Disclosure of Invention
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention provides a cement water reducing agent preparation method, which is completed by matching water reducing agent stirring equipment, wherein the water reducing agent stirring equipment comprises a stirring kettle, the top of the stirring kettle is provided with a charging hole, the middle part of the lower end of the stirring kettle is provided with a discharging hole, supporting legs are symmetrically arranged on the lower side surface of the stirring kettle, a stirring part is arranged on the central axis in the stirring kettle, the upper end of the stirring part penetrates through the stirring kettle and is connected to the upper side surface of the stirring kettle, a stacking plate is arranged in the lower end of the stirring kettle, the lower end of the stirring part penetrates through the stacking plate and is in sealing fit with the stacking plate, and a bottom stirring rod is symmetrically arranged on the outer side surface of the lower end of the stirring part and above the stacking plate.
Stirring portion is including stirring the pivot, the middle part of stirring the pivot evenly is provided with the multiunit puddler along its vertical direction, every group puddler is along the pivot symmetrical arrangement who stirs the pivot, the puddler is connected with stirring the pivot through normal running fit's mode, the upper end of stirring the pivot is provided with the swing adjusting part who is used for controlling the puddler angle, the upper end of stirring the pivot and the top that is located swing adjusting part are elastic telescopic structure, the top of stirring the pivot is connected through shaft coupling and agitator motor's output shaft, agitator motor passes through the motor cabinet and installs the side of going up at stirred tank.
Pile up the vertical sliding fit of lateral wall of board and stirred tank, pile up the side of board and be provided with and pile up the through-hole, stirred tank's downside inner wall is provided with and piles up the extrusion seal piece of through-hole position one-to-one.
The bottom of stirring pivot is provided with the follow-up and lifts the board, and the downside of follow-up lift board uses stirred tank's axis as the benchmark symmetry to be provided with the lifting body, and stirred tank's downside inner wall is provided with and matches with the lifting body and drive the follow-up and lift board and carry out the dog that moves up, and the downside of the lifting body all is provided with the chamfer with the corresponding position department of the side of going up of dog.
The upper side surface of the stacking plate is symmetrically provided with arc-shaped stirring frames, and the positions of the arc-shaped stirring frames and the positions of the stop blocks are arranged in a staggered manner.
The preparation method of the cement water reducing agent by adopting the water reducing agent stirring equipment comprises the following steps:
the first step is as follows: firstly, putting raw materials such as unsaturated dicarboxylic acid, styrene, sodium hypophosphite and the like into a stirring kettle, heating the stirring kettle by a heating sleeve, gradually adding an initiator, stirring, and driving a stirring rotating shaft to stir for three hours by a stirring motor;
the second step is that: in the stirring process of the stirring kettle, the stirring rotating shaft drives the stirring rod to adjust the angle so as to uniformly mix the solution, particle impurities can be generated in the stirring process of the raw materials, and the stirring rotating shaft drives the stacking plate to move upwards so as to separate the impurities generated in the stirring process of the raw materials;
the third step: after the raw materials are stirred, the raw materials are subjected to heat preservation for three hours by a heating sleeve, and then the raw materials are cooled to room temperature and discharged to obtain an additive of the water reducing agent, namely a copolycondensation monomer solution;
the fourth step: adding concentrated sulfuric acid and the fused naphthalene into a sulfonation kettle for sulfonation treatment; adding phosphoric acid and water into the solution after sulfonation for hydrolysis for two hours; adding copolycondensation monomer solution and formaldehyde into the hydrolyzed solution to carry out condensation reaction for three hours; and adding alkali liquor into the condensed solution to enable the pH value of the solution to be equal to the original value, and preparing the modified water reducing agent.
Furthermore, the lower side wall of the stirring kettle is an inclined plane, and the discharge port is positioned between the stop blocks.
Further, stirred tank's lateral wall symmetry is provided with square spout, piles up the lateral surface annular face of board and is provided with the square slider with square spout sliding fit, and the side of going up of square slider passes through extrusion spring and installs the upside inner wall at square spout.
Furthermore, the upper end and the lower end of the stacking through hole are both conical structures, the middle of the stacking through hole is a cylindrical structure, one side of the small size in the conical structures at the upper end and the lower end of the stacking through hole is in butt joint with the cylindrical structure in the middle of the stacking through hole, and the size of the conical structure on the upper side of the stacking through hole is larger than that of the conical structure on the lower side of the stacking through hole.
Furthermore, the stirring rotating shaft comprises a rotating inner shaft connected with an output shaft of the stirring motor, an outer shaft which is in sliding fit with the rotating inner shaft is arranged on the outer side of the rotating inner shaft in the vertical direction, the upper end and the lower end of the rotating inner shaft both penetrate through the outer shaft, the upper end of the rotating inner shaft is of an elastic telescopic structure, one end, close to the axis of the stirring kettle, of the stirring rod is connected to the outer side surface of the rotating inner shaft in a rotating fit mode, a position avoiding groove is formed in the position, corresponding to the stirring rod, of the outer shaft, the bottom stirring rod is installed on the outer side surface of the outer shaft, and the follow-up lifting plate is connected to the bottom of the rotating inner shaft.
Furthermore, the swing adjusting assembly is connected between the rotating inner shaft and the rotating outer shaft, and an angle control assembly which controls the stirring rod to rotate when the outer shaft and the rotating inner shaft displace is arranged on the outer shaft.
Furthermore, the swing adjusting assembly comprises a movable rotary table and a fixed rotary table, the movable rotary table is rotatably connected to the outer side of the upper end of the outer shaft, the fixed rotary table is rotatably installed on the outer side of the upper end of the rotating inner shaft, the fixed rotary table is located on the upper side of the movable rotary table, an adjusting stud is vertically installed on the fixed rotary table in a threaded matching mode, and the lower end of the adjusting stud is rotatably installed on the upper side face of the movable rotary table.
Furthermore, an L-shaped connecting frame is arranged on the outer annular surface of the fixed turntable, the lower end of the L-shaped connecting frame is connected to the upper side surface of the stirring kettle, and the vertical section of the L-shaped connecting frame is of a telescopic structure.
Further, angle control subassembly is including installing the fixed bolster in outer axle lateral surface, and the fixed bolster is L type structure, and one side that the puddler corresponds the fixed bolster is provided with the breach, is provided with U type frame in the breach of puddler, and U type card is established on the puddler, and its open-ended one side rotation connection is kept away from on the fixed bolster to U type frame.
Further, the one end that bottom stirring rod is close to stirred tank is provided with flexible complex indentation piece with it, and the one end downside that bottom stirring rod was kept away from to the indentation piece is the inclined plane, and the last side middle part of indentation piece is provided with trapezoidal arch, is provided with the trapezoidal arch on the cooperation indentation piece on the stirring rod of bottom and carries out the breach groove that contracts.
The invention has the beneficial effects that: firstly, the additive solution in the stirring kettle is stirred in a mode of adjusting the angle of the stirring rod and moving up and down, so that the additive solution cannot be layered.
The stirring rotating shaft can move up and down in the stirring process, and the layering phenomenon of the solution can be reduced as much as possible by matching the angular rotation of the stirring rod.
The stirring rod can be in three states under the regulation of the swing regulation component, the solution can be stirred upwards when the stirring rod inclines towards one side, the solution can be stirred downwards when the stirring rod inclines towards the other side, the solution can be uniformly stirred in the circumferential direction when the stirring rod is in the horizontal state, and the mixing effect of the solution can be further improved through the circulation regulation of the three states.
And fourthly, under the action of the rotating force of the stirring motor, impurities generated in the stirring process can be removed, and the influence of the impurities generated in the stirring process on the preparation of the water reducing agent additive is prevented.
And fifthly, the impurity generated by the water reducing agent additive solution can be removed in the stirring process of the water reducing agent additive solution, so that the preparation efficiency of the water reducing agent additive is not influenced by the clear action of the impurities.
Drawings
The present invention will be further described with reference to the drawings and examples.
FIG. 1 is a flow chart of a preparation method of the cement water reducing agent of the invention.
FIG. 2 is a schematic view of a first structure of the stirring equipment for water reducing agent of the present invention.
FIG. 3 is a schematic diagram of a second structure of the stirring apparatus for water reducer of the present invention.
FIG. 4 is a structural view of the stirring kettle of the water reducing agent stirring equipment of the present invention, wherein the upper side of the stacking plate is partially cut away.
FIG. 5 is a schematic diagram of a stirring kettle with the front side partially cut away.
Fig. 6 is a structural view after removing the press seal block and the outer ring of the stack plate in fig. 5.
FIG. 7 is a cross-sectional view of the stirring kettle, the stirring part, the stacking plate and the follow-up lifting plate in the water reducing agent stirring device of the present invention.
FIG. 8 is a structural diagram of a stirring kettle, a stirring rotating shaft, a stirring rod and a swing adjusting assembly in the water reducing agent stirring device.
FIG. 9 is a structural diagram of the stirring rotating shaft and the stirring rod in the stirring equipment for water reducing agent of the present invention.
In the figure: 1. stirring the mixture in a kettle; 11. a feed inlet; 12. a discharge port; 13. a support leg; 14. a square chute; 2. a stirring section; 21. a stirring rotating shaft; 211. rotating the inner shaft; 212. an outer shaft; 213. moving the turntable; 214. fixing the rotary table; 215. adjusting the stud; 216. an L-shaped connecting frame; 217. a position avoiding groove; 22. a stirring rod; 221. fixing a bracket; 222. a U-shaped frame; 23. a swing adjustment assembly; 3. stacking plates; 31. stacking the through holes; 32. extruding the sealing block; 33. an arc-shaped poking frame; 34. a square slider; 35. a compression spring; 4. a bottom stirring rod; 41. retracting the block; 5. lifting the plate in a follow-up manner; 51. a lifting body; 52. and a stop block.
Detailed Description
The following describes in detail embodiments of the present invention. The following examples are illustrative only and are not to be construed as limiting the invention. The examples do not specify particular techniques or conditions, and are performed according to techniques or conditions described in literature in the art or according to the product specification. The reagents or instruments used are conventional products which are commercially available, and are not indicated by manufacturers.
Referring to fig. 2-4, a method for preparing a cement water reducing agent, which is completed by matching water reducing agent stirring equipment, the water reducing agent stirring equipment comprises a stirring kettle 1, a feeding port 11 is arranged at the top of the stirring kettle 1, a discharging port 12 is arranged in the middle of the lower end of the stirring kettle 1, stop valves are arranged on the feeding port 11 and the discharging port 12, supporting legs 13 are symmetrically arranged on the lower side surface of the stirring kettle 1, the lower side wall of the stirring kettle 1 is an inclined surface, a stirring part 2 is arranged on the central axis position in the stirring kettle 1, the upper end of the stirring part 2 penetrates through the stirring kettle 1 and is connected with the upper side surface of the stirring kettle 1, a stacking plate 3 is arranged in the lower end of the stirring kettle 1, the lower end of the stirring part 2 penetrates through the stacking plate 3, and the two are in sealing fit, a bottom stirring rod 4 is symmetrically arranged on the outer side surface of the lower end of the stirring part 2 and above the stacking plate 3, according to the stirring device, the stirring of raw materials in the preparation process of the cement water reducing agent additive can be processed, and solid particles generated by stirring of the raw materials are removed in the stirring process, so that other solutions can be added for stirring reaction at a later stage, the stirring part 2 is used for stirring the solution in the stirring kettle 1, granular impurities generated after the solution is stirred are accumulated on the accumulation plate 3, the stirring rod 4 at the bottom can be used for stirring the solution at the lower layer of the stirring kettle 1, and the mixing and stirring effects of the solution are improved.
Referring to fig. 3-4, the stirring portion 2 includes a stirring rotating shaft 21, a plurality of groups of stirring rods 22 are uniformly arranged in the middle of the stirring rotating shaft 21 along the vertical direction, each group of stirring rods 22 is symmetrically arranged along the rotating shaft of the stirring rotating shaft 21, the stirring rods 22 are connected with the stirring rotating shaft 21 in a rotation fit manner, a swing adjusting assembly 23 for controlling the angle of the stirring rods 22 is arranged at the upper end of the stirring rotating shaft 21, the upper end of the stirring rotating shaft 21 and above the swing adjusting assembly 23 are of an elastic telescopic structure, the top of the stirring rotating shaft 21 is connected with an output shaft of a stirring motor through a coupler, the stirring motor is mounted on the upper side of the stirring kettle 1 through a motor base, the stirring motor is used for driving the stirring rods 22 and the bottom stirring rod 4 on the stirring rotating shaft 21 to rotate, so that the solution can be stirred, the swing adjusting assembly 23 can adjust the inclination angle of the stirring rods 22, the stirring rod 22 can stir the solution upwards or downwards when in a deflected state, thereby increasing the effect of stirring and mixing the solution.
Referring to fig. 4-5, the stacking plate 3 is vertically matched with the side wall of the stirring kettle 1 in a sliding manner, stacking through holes 31 are formed in the side surface of the stacking plate 3, and extrusion sealing blocks 32 corresponding to the stacking through holes 31 in a one-to-one manner are arranged on the inner wall of the lower side of the stirring kettle 1; the lateral wall symmetry of stirred tank 1 is provided with square chute 14, the lateral surface annular face of piling up board 3 is provided with square slider 34 with square chute 14 sliding fit, square slider 34's the upside inner wall of installing at square chute 14 through extrusion spring 35, extrusion spring 35 is compression spring, the extension power has, pile up board 3 under no exogenic action and can paste on extrusion seal block 32 under extrusion spring 35's effect, so that pile up board 3 and divide stirred tank 1 into two upper and lower confined spaces, and the debris that the stirring produced can drop to piling up in the through-hole 31.
Referring to fig. 7, the upper end and the lower end of the stacking through hole 31 are both cone-shaped structures, the middle of the stacking through hole 31 is a cylindrical structure, one side of the small-sized cone-shaped structure of the upper end and the lower end of the stacking through hole 31 is butted with the middle cylindrical structure of the stacking through hole 31, the size of the cone-shaped structure of the upper side of the stacking through hole 31 is larger than that of the cone-shaped structure of the lower side of the stacking through hole, the extrusion sealing block 32 is matched with the cone-shaped structure of the lower side of the stacking through hole 31, the stacking through hole 31 is structurally configured so that sundries can be stably stacked therein, and the extrusion sealing block 32 is matched with the stacking through hole 31 in structure so as to increase the sealing performance.
Referring to fig. 6, in order to increase the solution stirring effect, in the present embodiment, the stirring portion 2 is moved up and down by the following structure, the bottom of the stirring rotating shaft 21 is provided with the following lifting plate 5, the lower side of the following lifting plate 5 is symmetrically provided with the lifting bodies 51 by taking the axis of the stirring tank 1 as a reference, the inner wall of the lower side of the stirring tank 1 is provided with the stoppers 52 which are matched with the lifting bodies 51 and drive the following lifting plate 5 to move up, the corresponding positions of the lower side of the lifting bodies 51 and the upper side of the stoppers 52 are provided with chamfers, the discharge hole 12 is located between the stoppers 52, the following lifting plate 5 can move up and down under the action of the lifting bodies 51 and the stoppers 52, so as to drive the stirring rod 22 on the stirring rotating shaft 21 to reciprocate up and down, thereby increasing the stirring effect of the present invention, specifically, the following lifting plate 5 is driven to rotate when the stirring rotating shaft 21 rotates, when the lifting body 51 on the follow-up lifting plate 5 contacts the stopper 52, the follow-up lifting plate 5 is driven to move upwards, the elastic telescopic structure at the upper end of the stirring rotating shaft 21 can contract in a matching manner, and when the stirring rotating shaft 21 continues to rotate to separate the lifting body 51 from the stopper 52, the stirring rotating shaft 21 drives the follow-up lifting plate 5 to return to the initial height under the action of the elastic telescopic structure.
Referring to fig. 8, the stirring rotating shaft 21 has a structure that the stirring rotating shaft 21 includes a rotating inner shaft 211 connected to an output shaft of the stirring motor, an outer shaft 212 slidably engaged with the rotating inner shaft 211 in a vertical direction is disposed outside the rotating inner shaft 211, both the upper and lower ends of the rotating inner shaft 211 pass through the outer shaft 212, the upper end of the rotating inner shaft 211 is of an elastic telescopic structure, one end of the stirring rod 22 close to the axis of the stirring kettle 1 is connected to the outer side surface of the rotating inner shaft 211 in a manner of rotating engagement, a position avoiding groove 217 is disposed on the outer shaft 212 at a position corresponding to the stirring rod 22, the bottom stirring rod 4 is mounted on the outer side surface of the outer shaft 212, and the follow-up lifting plate 5 is connected to the bottom of the rotating inner shaft 211.
With continued reference to fig. 8, in order to further increase the stirring effect of the solution, the present invention can control the angle adjustment of the stirring rod 22 to achieve that the solution can be stirred upwards or downwards, the swing adjusting assembly 23 is connected between the inner rotating shaft 211 and the outer shaft 212, the outer shaft 212 is provided with an angle control assembly for controlling the stirring rod 22 to rotate when the outer shaft 212 displaces from the inner rotating shaft 211, the swing adjusting assembly 23 is used for adjusting the relative height between the inner rotating shaft 211 and the outer shaft 212, when the swing adjusting assembly 23 drives the outer shaft 212 to move upwards, the angle control assembly drives one side of the stirring rod 22 to rotate upwards, so that the stirring rod 22 can stir the solution upwards when the stirring rotating shaft 21 rotates anticlockwise, thereby increasing the mixing effect between the solutions, otherwise, the stirring rod 22 can stir the solution downwards.
Still referring to fig. 8, the swing adjusting assembly 23 is configured such that the swing adjusting assembly 23 includes a movable turntable 213 rotatably connected to an outer side of an upper end of the outer shaft 212 and a fixed turntable 214 rotatably mounted to an outer side of an upper end of the inner rotating shaft 211, the fixed turntable 214 is located above the movable turntable 213, an adjusting stud 215 is vertically mounted on the fixed turntable 214 in a threaded manner, a lower end of the adjusting stud 215 is rotatably mounted to an upper side surface of the movable turntable 213, and the adjusting stud 215 is manually screwed to control the outer shaft 212 to move up and down for adjustment.
Referring to fig. 3 and 8, an L-shaped connecting frame 216 is disposed on an outer annular surface of the fixed turntable 214, a lower end of the L-shaped connecting frame 216 is connected to an upper side surface of the stirring tank 1, a vertical section of the L-shaped connecting frame 216 is of a telescopic structure, and the L-shaped connecting frame 216 is used for preventing the fixed turntable 214 from rotating along with the rotating inner shaft 211, so that the adjusting stud 215 can also rotate during the stirring process.
Referring to fig. 8 and 9, the angle control assembly includes a fixing bracket 221 installed on an outer side surface of the outer shaft 212, the fixing bracket 221 is of an L-shaped structure, a notch is formed in one side of the stirring rod 22 corresponding to the fixing bracket 221, a U-shaped frame 222 is arranged in the notch of the stirring rod 22, the U-shaped frame 222 is clamped on the stirring rod 22, one side, away from the opening, of the U-shaped frame 222 is rotatably connected to the fixing bracket 221, the fixing bracket 221 is driven to move synchronously when the outer shaft 212 moves upwards, the U-shaped frame 222 installed on the fixing bracket 221 drives the stirring rod 22 to rotate, and at this time, the U-shaped frame 222 can rotate in a matched manner, so that the U-shaped frame 222 is always clamped on the stirring rod 22.
Referring to fig. 4 to 6, the upper side of the stacking plate 3 is symmetrically provided with an L-shaped arc-shaped toggle frame 33, and the positions of the arc-shaped toggle frame 33 and the stop block 52 are arranged in a staggered manner; one end of the bottom stirring rod 4 close to the stirring kettle 1 is provided with a retracting block 41 which is in elastic telescopic fit with the stirring kettle 1, the lower side of one end, far away from the bottom stirring rod 4, of the retracting block 41 is an inclined plane, the middle part of the upper side face of the retracting block 41 is provided with a trapezoidal bulge, the bottom stirring rod 4 is provided with a notch groove which is matched with the trapezoidal bulge on the retracting block 41 for contraction, when the stirring rod 22 is in a horizontal state, the bottom stirring rod 4 is positioned on the upper side of the arc stirring frame 33, and when the stirring rod 22 is in an inclined state for stirring the solution downwards, the bottom stirring rod 4 is positioned on the lower side of the horizontal section of the arc stirring frame 33; after the solution is stirred and sundries need to be discharged, the adjusting stud 215 is rotated to control the outer shaft 212 to move downwards, at the moment, the stirring rod 22 can stir the solution downwards, the bottom stirring rod 4 can move to the position below the horizontal section of the arc stirring frame 33, so that when the bottom stirring rod 4 rotates, the trapezoid protrusion on the retraction block 41 is stirred to move upwards when contacting with the arc stirring frame 33, a gap is generated between the stacking plate 3 and the extrusion sealing block 32, sundries stacked in the stacking through hole 31 can move to the lower side of the stacking plate 3, and when the trapezoid protrusion on the retraction block 41 is separated from the arc stirring frame 33, the stacking plate 3 returns to the sealing position again; the position of the arc-shaped stirring frame 33 and the position of the stopper 52 are arranged alternately so that the upward movement of the stacking plate 3 and the contraction of the stirring rotary shaft 21 do not proceed simultaneously; the flexible cooperation of elasticity between bottom stirring rod 4 and indentation piece 41 makes bottom stirring rod 4 move down along with outer axle 212, and indentation piece 41 can contract automatically when contacting with arc stirring frame 33 to arc stirring frame 33 can not cause the influence to the downward removal of bottom stirring rod 4.
Referring to fig. 1, the preparation method of the cement water reducer by adopting the water reducer stirring equipment comprises the following steps:
the first step is as follows: firstly, putting unsaturated dicarboxylic acid, styrene, sodium hypophosphite and other raw materials into a stirring kettle 1, heating the stirring kettle 1 through a heating sleeve, gradually adding an initiator, stirring, and driving a stirring rotating shaft 21 to stir for three hours through a stirring motor;
the second step: in the stirring process of the stirring kettle 1, the stirring rotating shaft 21 drives the stirring rod 22 to adjust the angle so as to uniformly mix the solution, particle impurities can be generated in the raw material stirring process, and the stirring rotating shaft 21 drives the stacking plate 3 to move upwards so as to separate the impurities generated in the raw material stirring process;
the third step: after the raw materials are stirred, preserving the heat of the raw materials for three hours by a heating sleeve, cooling the raw materials to room temperature, and discharging to obtain an additive of the water reducing agent, namely a copolycondensation monomer solution;
the fourth step: adding concentrated sulfuric acid and the fused naphthalene into a sulfonation kettle for sulfonation treatment; adding phosphoric acid and water into the solution after sulfonation for hydrolysis for two hours; adding copolycondensation monomer solution and formaldehyde into the hydrolyzed solution to carry out condensation reaction for three hours; and adding alkali liquor into the condensed solution to enable the pH value of the solution to be 9, and preparing the modified water reducing agent.
The working steps of the water reducing agent stirring equipment are as follows: firstly, adding raw materials of a water reducing agent additive into a stirring kettle 1, heating the stirring kettle 1 through an external heating sleeve to enable the raw materials in the stirring kettle 1 to be at a proper reaction temperature, then driving a stirring rotating shaft 21 to rotate through a stirring motor to enable the raw materials of the additive to be stirred, and moving a lifting plate 5 up and down under the action of a lifting body 51 and a stop block 52 so as to drive a stirring rod 22 on the stirring rotating shaft 21 to reciprocate up and down in the rotating process of the stirring rotating shaft 21, so that the stirring effect of the stirring kettle is improved;
in the process of stirring the additive raw materials, the adjusting stud 215 is rotated to drive the movable turntable 213 to move upwards, so that the movable turntable 213 drives the outer shaft 212 to move upwards, the stirring rod 22 can be in a horizontal state or a state of stirring the solution upwards, and the stirring and mixing effects of the additive solution are further improved; meanwhile, the stacking plate 3 can be attached to the extrusion sealing block 32 under the action of the extrusion spring 35, so that the stirring kettle 1 is divided into an upper closed space and a lower closed space by the stacking plate 3, and impurities generated by stirring can fall into the stacking through hole 31;
when sundries on the stacking plate 3 are stacked to a certain degree, the adjusting stud 215 is controlled to rotate to enable the outer shaft 212 to move to the lowest end, the stirring rod 22 rotates to stir the solution downwards, meanwhile, the outer shaft 212 moves downwards to enable the bottom stirring rod 4 to move to the position below the horizontal section of the arc stirring frame 33, when the bottom stirring rod 4 rotates, the trapezoidal protrusion on the retraction block 41 is stirred to move upwards when being in contact with the arc stirring frame 33, so that a gap is formed between the stacking plate 3 and the extrusion sealing block 32, the sundries stacked in the stacking through hole 31 can move to the lower side of the stacking plate 3, and when the trapezoidal protrusion on the retraction block 41 is separated from the arc stirring frame 33, the stacking plate 3 returns to the sealing position again;
After the impurities are cleaned, the outer shaft 212 is controlled to move upwards, so that the bottom stirring rod 4 moves to the position above the arc stirring frame 33, then the discharge hole 12 is opened, the impurities are filtered, and the obtained solution is added into the stirring kettle 1 again.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention and still cover the scope of the present invention.
Claims (10)
1. The utility model provides a cement water reducing agent preparation method, this cement water reducing agent's preparation method uses the cooperation of water reducing agent agitated vessel to accomplish, water reducing agent agitated vessel includes stirred tank (1), the top of stirred tank (1) is provided with charge door (11), the lower extreme middle part of stirred tank (1) is provided with discharge gate (12), the downside symmetry of stirred tank (1) is provided with landing leg (13), stirred tank (1) center axis position is provided with stirring portion (2), the side of going up of stirred tank (1) is run through stirred tank (1) and connection in stirred tank (1) in the upper end of stirring portion (2), its characterized in that: a stacking plate (3) is arranged in the lower end of the stirring kettle (1), the lower end of the stirring part (2) penetrates through the stacking plate (3) and is in sealing fit with the stacking plate, and bottom stirring rods (4) are symmetrically arranged on the outer side surface of the lower end of the stirring part (2) and above the stacking plate (3);
the stirring part (2) comprises a stirring rotating shaft (21), a plurality of groups of stirring rods (22) are uniformly arranged in the middle of the stirring rotating shaft (21) along the vertical direction of the stirring rotating shaft, each group of stirring rods (22) are symmetrically arranged along the rotating shaft of the stirring rotating shaft (21), the stirring rods (22) are connected with the stirring rotating shaft (21) in a rotation fit manner, a swing adjusting assembly (23) used for controlling the angle of each stirring rod (22) is arranged at the upper end of the stirring rotating shaft (21), the upper end of the stirring rotating shaft (21) is located above the swing adjusting assembly (23) and is of an elastic telescopic structure, the top of the stirring rotating shaft (21) is connected with an output shaft of a stirring motor through a coupler, and the stirring motor is installed on the upper side face of the stirring kettle (1) through a motor base;
The stacking plate (3) is vertically matched with the side wall of the stirring kettle (1) in a sliding manner, stacking through holes (31) are formed in the side face of the stacking plate (3), and extrusion sealing blocks (32) which correspond to the stacking through holes (31) in position one by one are arranged on the inner wall of the lower side of the stirring kettle (1);
the bottom of the stirring rotating shaft (21) is provided with a follow-up lifting plate (5), the lower side surface of the follow-up lifting plate (5) is symmetrically provided with lifting bodies (51) by taking the axis of the stirring kettle (1) as a reference, the inner wall of the lower side of the stirring kettle (1) is provided with a stop block (52) which is matched with the lifting bodies (51) and drives the follow-up lifting plate (5) to move upwards, and chamfers are arranged at corresponding positions of the lower side surface of the lifting bodies (51) and the upper side surface of the stop block (52);
the upper side surface of the stacking plate (3) is symmetrically provided with an L-shaped arc stirring frame (33), and the positions of the arc stirring frames (33) and the positions of the stop blocks (52) are arranged in a staggered manner;
the preparation method of the cement water reducing agent by adopting the water reducing agent stirring equipment comprises the following steps:
the first step is as follows: firstly, putting unsaturated dicarboxylic acid, styrene, sodium hypophosphite and other raw materials into a stirring kettle (1), heating the stirring kettle (1) through a heating sleeve, gradually adding an initiator, stirring, and driving a stirring rotating shaft (21) to stir for three hours through a stirring motor;
The second step is that: in the stirring process of the stirring kettle (1), the stirring rotating shaft (21) drives the stirring rod (22) to adjust the angle so as to uniformly mix the solution, particle impurities can be generated in the stirring process of the raw materials, and the stirring rotating shaft (21) drives the stacking plate (3) to move upwards so as to separate the impurities generated in the stirring process of the raw materials;
the third step: after the raw materials are stirred, the raw materials are subjected to heat preservation for three hours by a heating sleeve, and then the raw materials are cooled to room temperature and discharged to obtain an additive of the water reducing agent, namely a copolycondensation monomer solution;
the fourth step: adding concentrated sulfuric acid and the fused naphthalene into a sulfonation kettle for sulfonation treatment; adding phosphoric acid and water into the solution after sulfonation for hydrolysis for two hours; adding copolycondensation monomer solution and formaldehyde into the hydrolyzed solution to carry out condensation reaction for three hours; and adding alkali liquor into the condensed solution to enable the pH value of the solution to be 8.5-9.5, and preparing the modified water reducing agent.
2. The preparation method of the cement water reducing agent according to claim 1, characterized in that the lower side wall of the stirring kettle (1) is an inclined surface, and the discharge port (12) is positioned between the stop blocks (52).
3. The preparation method of the cement water reducing agent according to claim 1, characterized in that the side wall of the stirring kettle (1) is symmetrically provided with square chutes (14), the annular surface of the outer side surface of the stacking plate (3) is provided with square sliding blocks (34) in sliding fit with the square chutes (14), and the upper side surfaces of the square sliding blocks (34) are installed on the inner side wall of the upper side of the square chutes (14) through extrusion springs (35).
4. The preparation method of the cement water reducing agent according to claim 1, characterized in that the upper and lower ends of the accumulation through hole (31) are cone-shaped structures, the middle part of the accumulation through hole (31) is a cylindrical structure, one side of the small size of the cone-shaped structures at the upper and lower ends of the accumulation through hole (31) is butted with the middle cylindrical structure of the accumulation through hole (31), and the size of the cone-shaped structure at the upper side of the accumulation through hole (31) is larger than that of the cone-shaped structure at the lower side thereof.
5. The preparation method of the cement water reducing agent according to any one of claims 1 to 4, characterized in that the stirring rotating shaft (21) comprises a rotating inner shaft (211) connected with an output shaft of a stirring motor, an outer shaft (212) in sliding fit with the rotating inner shaft (211) in the vertical direction is arranged outside the rotating inner shaft (211), the upper end and the lower end of the rotating inner shaft (211) both penetrate through the outer shaft (212), the upper end of the rotating inner shaft (211) is of an elastic telescopic structure, one end of the stirring rod (22) close to the axis of the stirring kettle (1) is connected to the outer side of the rotating inner shaft (211) in a rotating fit manner, a position-avoiding groove (217) is arranged on the outer shaft (212) corresponding to the stirring rod (22), the bottom stirring rod (4) is arranged on the outer side of the outer shaft (212), and the follow-up lifting plate (5) is connected to the bottom of the rotating inner shaft (211).
6. The preparation method of the cement water reducing agent according to claim 5, characterized in that the swing adjusting assembly (23) is connected between the inner rotating shaft (211) and the outer shaft (212), and the outer shaft (212) is provided with an angle control assembly for controlling the rotation of the stirring rod (22) when the outer shaft (212) and the inner rotating shaft (211) are displaced.
7. The preparation method of the cement water reducer according to claim 6, characterized in that the swing adjusting assembly (23) comprises a movable turntable (213) rotatably connected to the outer side of the upper end of the outer shaft (212) and a fixed turntable (214) rotatably mounted to the outer side of the upper end of the inner rotating shaft (211), the fixed turntable (214) is located on the upper side of the movable turntable (213), an adjusting stud (215) is vertically mounted on the fixed turntable (214) in a threaded fit manner, and the lower end of the adjusting stud (215) is rotatably mounted on the upper side of the movable turntable (213).
8. The preparation method of the cement water reducing agent according to claim 7, characterized in that an L-shaped connecting frame (216) is arranged on the outer annular surface of the fixed turntable (214), the lower end of the L-shaped connecting frame (216) is connected to the upper side surface of the stirring kettle (1), and the vertical section of the L-shaped connecting frame (216) is of a telescopic structure.
9. The preparation method of the cement water reducer according to claim 6, wherein the angle control assembly comprises a fixing support (221) installed on the outer side surface of the outer shaft (212), the fixing support (221) is of an L-shaped structure, a notch is formed in one side, corresponding to the fixing support (221), of the stirring rod (22), a U-shaped frame (222) is arranged in the notch of the stirring rod (22), the U-shaped frame (222) is clamped on the stirring rod (22), and one side, far away from the opening, of the U-shaped frame (222) is rotatably connected to the fixing support (221).
10. The preparation method of the cement water reducing agent according to any one of claims 6 to 9, characterized in that one end of the bottom stirring rod (4) close to the stirring kettle (1) is provided with a retraction block (41) in elastic telescopic fit therewith, the lower side of one end of the retraction block (41) far away from the bottom stirring rod (4) is an inclined surface, the middle part of the upper side surface of the retraction block (41) is provided with a trapezoidal protrusion, and the bottom stirring rod (4) is provided with a notch groove for shrinkage by matching with the trapezoidal protrusion on the retraction block (41).
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