阅读说明：本技术 一种混凝土管桩用聚羧酸高性能减水剂的生产方法 (Production method of polycarboxylic acid high-performance water reducing agent for concrete pipe pile ) 是由 陈佩丽 于 2020-05-27 设计创作，主要内容包括：本发明属于减水剂制备技术领域,具体的说是一种混凝土管桩用聚羧酸高性能减水剂的生产方法,该方法中使用的制粒装置包括工作台,所述工作台顶端固定有一号电机,所述一号电机的输出轴端固定有转盘,所述转盘上转动安装有凸台,所述凸台表面固定有连杆,所述工作台顶端固定有圆柱筒,所述圆柱筒内腔活动安装有活塞,所述连杆远离凸台的一端转动安装在活塞上,所述圆柱筒远离一号电机的一端固定有半透膜；本发明通过半透膜的过滤来析出液体聚羧酸高性能减水剂中的水分,从而使得聚羧酸高性能减水剂在进行干燥时能被快速烘干,提高了聚羧酸高性能减水剂的生产效率,同时减少了聚羧酸高性能减水剂生产过程中的能量消耗。(The invention belongs to the technical field of preparation of water reducing agents, and particularly relates to a production method of a polycarboxylic acid high-performance water reducing agent for concrete pipe piles, wherein a granulating device used in the method comprises a workbench, a first motor is fixed at the top end of the workbench, a rotary disc is fixed at the output shaft end of the first motor, a boss is rotatably mounted on the rotary disc, a connecting rod is fixed on the surface of the boss, a cylindrical barrel is fixed at the top end of the workbench, a piston is movably mounted in the inner cavity of the cylindrical barrel, one end, far away from the boss, of the connecting rod is rotatably mounted on the piston, and a semipermeable membrane is fixed at one end, far away from the first motor; according to the invention, water in the liquid polycarboxylic acid high-performance water reducing agent is separated out through the filtration of the semipermeable membrane, so that the polycarboxylic acid high-performance water reducing agent can be quickly dried during drying, the production efficiency of the polycarboxylic acid high-performance water reducing agent is improved, and the energy consumption in the production process of the polycarboxylic acid high-performance water reducing agent is reduced.)

1. A production method of a polycarboxylic acid high-performance water reducing agent for concrete pipe piles is characterized by comprising the following steps:

s1: adding polyethylene glycol into a reaction kettle, adding methacrylic acid into the reaction kettle, adding concentrated sulfuric acid into the reaction kettle, and obtaining the intermediate macromonomer polyethylene glycol monomethacrylate of the water reducing agent after the reaction is finished;

s2: adding acrylic acid and a molecular weight regulator dodecyl mercaptan into the polyethylene glycol monomethacrylate obtained in S1, and adding deionized water to obtain a material A for later use; taking ammonium persulfate and adding deionized water to obtain a material B for later use; adding deionized water into a reaction kettle, adding a material A and a material B into the reaction kettle, and reacting to obtain a polymer;

s3: cooling the reacted polymer in the S2 to below 50 ℃, adding caustic soda flakes while stirring, adjusting the pH value to 6-7, obtaining a liquid polycarboxylic acid high-performance water reducing agent solution with the solid content of 30% after the reaction is finished, adding a colloid loosening agent into the solution, and stirring to obtain a semi-finished product;

s4: putting the semi-finished product liquid obtained in the step S3 into a raw material barrel (11) of a granulating device, filtering the water of the liquid polycarboxylic acid high-performance water reducing agent by utilizing a semipermeable membrane (8) in the granulating device to enable the solid content of the liquid polycarboxylic acid high-performance water reducing agent to rise and become sticky substances, putting the polycarboxylic acid high-performance water reducing agent with the rising solid content into a tank body (16), cutting the polycarboxylic acid high-performance water reducing agent by utilizing a cutting block (19) in the tank body (16), baking the reduced polycarboxylic acid high-performance water reducing agent small blocks, making the polycarboxylic acid high-performance water reducing agent small blocks into particles, grinding the particle water reducing agent into powder by grinding equipment, and bagging for storage;

wherein, the pelletization device that uses among S4 includes workstation (1), workstation (1) top is fixed with motor (2) No. one, the output shaft end of motor (2) is fixed with carousel (3), it installs boss (4) to rotate on carousel (3), boss (4) fixed surface has connecting rod (5), workstation (1) top is fixed with cylinder section of thick bamboo (6), cylinder section of thick bamboo (6) inner chamber movable mounting has piston (7), the one end that boss (4) were kept away from in connecting rod (5) is rotated and is installed on piston (7), the one end that a motor (2) were kept away from in cylinder section of thick bamboo (6) is fixed with pellicle (8), the one end that a motor (2) were kept away from in cylinder section of thick bamboo (6) is fixed with outlet pipe (9), outlet pipe (9) are used for discharging the water that pellicle (8) filtered out, pellicle (8) are used for filtering water reducing agent, the water-saving mortar pump is characterized in that a water pipe (10) is arranged at the top end of the cylindrical barrel (6), one end, far away from the cylindrical barrel (6), of the water pipe (10) is connected with a raw material barrel (11), the water pipe (10) is used for communicating the raw material barrel (11) with the cylindrical barrel (6), one end, located at the cylindrical barrel (6), of the water pipe (10) is provided with a one-way valve, the bottom end of the cylindrical barrel (6) is provided with a round hole, an electromagnetic valve (12) is arranged at the round hole, a mortar pump (13) is fixed at the top end of the workbench (1), an inlet of the mortar pump (13) is fixedly connected with an outlet end of the electromagnetic valve (12), a hose (14) is fixed at an outlet end of the mortar pump (13), more than two fork pipes (15) are fixed at one end, far away from the mortar pump (13), of the fork pipes (15) is fixed with a tank body (16), and a second, the output shaft end of No. two motor (17) is fixed with pivot (18), the bottom of pivot (18) is rotated and is installed the inner chamber bottom at the jar body (16), the top of pivot (18) lateral wall is fixed with cutting block (19) more than two along its circumference equidistance, cutting block (19) are netted, cutting block (19) surface is the arc, cutting block (19) are used for cutting the water-reducing agent that gets into jar body (16), jar body (16) bottom is equipped with the opening, and the opening part is equipped with the discharging pipe, jar body (16) inside wall is equipped with the heating pipe, the heating pipe is used for improving jar body (16) inner chamber air temperature, be equipped with the controller on workstation (1), the controller is used for controlling pelletization device work.

2. The production method of the polycarboxylic acid high-performance water reducing agent for the concrete pipe pile according to claim 1, which is characterized by comprising the following steps: the bulking agent comprises the following components in percentage by weight:

3-5 parts of sodium bicarbonate

3-5 parts of sierozem powder

3-5 parts of montmorillonite

3-5 parts of baking soda

3-5 parts of sodium carbonate

2-4 parts of ammonium bicarbonate

2-4 parts of ammonium carbonate

1-3 parts of silica gel.

3. The production method of the polycarboxylic acid high-performance water reducing agent for the concrete pipe pile according to claim 2, which is characterized by comprising the following steps: the preparation process of the loosening agent comprises the following steps:

a1: respectively crushing solid sodium bicarbonate, sierozem powder, montmorillonite, baking soda, soda ash, ammonium bicarbonate and ammonium carbonate into powder by using a crushing device, and putting the crushed powder of the sodium bicarbonate, the sierozem powder, the montmorillonite, the baking soda and the soda ash into a container for mixing to obtain a powder mixture I;

a2: adding purified water into the container of A1, stirring, and ensuring the stirring direction to be consistent all the time in the stirring process to obtain a solution I;

a3: crushing the silica gel, putting the crushed silica gel into the first solution A2, and heating the solution during stirring to enable the first solution to become a viscous colloidal solution;

a4: and mixing the ammonium bicarbonate powder and the ammonium carbonate powder, and then putting the mixture into the colloidal solution in A3 for stirring, wherein the stirring direction is consistent all the time and is opposite to the stirring direction in A2, so that the colloidal loosening agent can be obtained.

4. The production method of the polycarboxylic acid high-performance water reducing agent for the concrete pipe pile according to claim 1, which is characterized by comprising the following steps: the lateral wall of pivot (18) is gone up and is fixed with more than two support (20) along its circumference equidistance, be fixed with more than two iron wires (21) from top to bottom equidistance between support (20) and pivot (18).

5. The production method of the polycarboxylic acid high-performance water reducing agent for the concrete pipe pile according to claim 4, which is characterized by comprising the following steps: iron wire (21) are located the one end that support (20) is higher than its one end that is located pivot (18), the diameter of iron wire (21) is 0.1mm-0.2mm, for parallel arrangement and interval between the two adjacent iron wire (21) is 2-4mm between the two.

6. The production method of the polycarboxylic acid high-performance water reducing agent for the concrete pipe pile according to claim 1, which is characterized by comprising the following steps: the one end that cylinder (6) are located a motor (2) is equipped with cyclic annular air pocket (22), the inner chamber bottom of the jar body (16) is equipped with two or more shower nozzles (23), jar body (16) bottom is equipped with inflatable air pocket (24), inflatable air pocket (24) and cyclic annular air pocket (22) and shower nozzle (23) pass through the trachea intercommunication, be equipped with the check valve between inflatable air pocket (24) and cyclic annular air pocket (22), be equipped with the check valve on inflatable air pocket (24) equally, cyclic annular air pocket (22) are arranged in aerifing inflatable air pocket (24), the diameter value of the bottom of the jar body (16) is greater than the diameter value at its top, the jet-propelled direction of shower nozzle (23) is parallel with the inside wall of the jar body (16).

Technical Field

The invention belongs to the technical field of preparation of water reducing agents, and particularly relates to a production method of a polycarboxylic acid high-performance water reducing agent for concrete pipe piles.

Background

The pipe piles are classified into post-tensioned prestressed pipe piles, pre-tensioned prestressed pipe piles, prestressed concrete pipe piles (PC pipe piles), prestressed concrete thin-wall pipe piles (PTC pipe piles) and high-strength prestressed concrete pipe piles (PHC pipe piles). The pre-tensioning prestressed pipe pile is a hollow cylindrical elongated concrete prefabricated member made up by adopting pre-tensioning prestressed process and centrifugal forming method, mainly formed from cylindrical pile body, end plate and steel ferrule.

The polycarboxylic acid high-performance water reducing agent is prepared by graft copolymerization of a plurality of macromolecular organic compounds taking polycarboxylate as a main body, has extremely strong water reducing performance, and belongs to the leading environment-friendly concrete admixture in the world. The concrete is widely applied to concrete construction of water conservancy, electric power, ports, railways, bridges, highways, airports, military engineering and various structures.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides the production method of the polycarboxylic acid high-performance water reducing agent for the concrete pipe pile.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a production method of a polycarboxylic acid high-performance water reducing agent for concrete pipe piles, which comprises the following steps:

s1: adding polyethylene glycol into a reaction kettle, adding methacrylic acid into the reaction kettle, adding concentrated sulfuric acid into the reaction kettle, and obtaining the intermediate macromonomer polyethylene glycol monomethacrylate of the water reducing agent after the reaction is finished;

s2: adding acrylic acid and a molecular weight regulator dodecyl mercaptan into the polyethylene glycol monomethacrylate obtained in S1, and adding deionized water to obtain a material A for later use; taking ammonium persulfate and adding deionized water to obtain a material B for later use; adding deionized water into a reaction kettle, adding a material A and a material B into the reaction kettle, and reacting to obtain a polymer;

s3: cooling the reacted polymer in the S2 to below 50 ℃, adding caustic soda flakes while stirring, adjusting the pH value to 6-7, obtaining a liquid polycarboxylic acid high-performance water reducing agent solution with the solid content of 30% after the reaction is finished, adding a colloid loosening agent into the solution, and stirring to obtain a semi-finished product, wherein the loosening agent generates gas when a granulation device is used for baking the water reducing agent, so that gaps are generated inside small water reducing agent blocks, and the drying of the small water reducing agent blocks is facilitated;

s4: putting the semi-finished product obtained in the step S3 into a raw material barrel of a granulating device, filtering the water content of the liquid polycarboxylic acid high-performance water reducing agent by utilizing a semipermeable membrane in the granulating device, so that the solid content of the liquid polycarboxylic acid high-performance water reducing agent rises to become sticky matter, then the polycarboxylic acid high-performance water reducing agent with the rising solid content is put into the tank body, the cutting block in the tank body is utilized to cut the polycarboxylic acid high-performance water reducing agent, baking the reduced polycarboxylic acid high-performance water reducing agent small blocks, preparing the polycarboxylic acid high-performance water reducing agent small blocks into granules, grinding the granular water reducing agent into powder by grinding equipment, bagging and storing, reducing the moisture content in the liquid polycarboxylic acid high-performance water reducing agent by a granulating device, the drying process of the polycarboxylic acid high-performance water reducing agent is shorter, and the energy consumption in the preparation process of the polycarboxylic acid high-performance water reducing agent is reduced;

wherein, the pelletization device that uses in S4 includes the workstation, the workstation top is fixed with a motor, the output shaft end of a motor is fixed with the carousel, rotate on the carousel and install the boss, boss fixed surface has the connecting rod, the workstation top is fixed with a cylinder section of thick bamboo, cylinder section of thick bamboo inner chamber movable mounting has the piston, the one end that the boss was kept away from to the connecting rod is rotated and is installed on the piston, the one end that a motor was kept away from to the cylinder section of thick bamboo is fixed with the pellicle, the one end that a motor was kept away from to the cylinder section of thick bamboo is fixed with the outlet pipe, the outlet pipe is used for discharging the pellicle and filters the water that filters out, the pellicle is used for filtering the water-reducing agent, cylinder section of thick bamboo top is equipped with the water pipe, the one end that a cylinder section of thick bamboo was kept away from, the circular hole is formed in the bottom end of the cylindrical barrel, the electromagnetic valve is arranged at the circular hole, the top end of the workbench is fixedly provided with a thick slurry pump, an inlet of the thick slurry pump is fixedly connected with an outlet end of the electromagnetic valve, a hose is fixed at an outlet end of the thick slurry pump, more than two fork pipes are fixed at one end, away from the thick slurry pump, of the hose, a tank body is fixed at one end, away from the hose, of the fork pipe, the top end of the tank body is fixedly provided with a second motor, a rotating shaft is fixed at an output shaft end of the second motor, the bottom end of the rotating shaft is rotatably arranged at the bottom of an inner cavity of the tank body, more than two cutting blocks are fixed at the top of the side wall of the rotating shaft along the circumferential direction of the side wall at equal intervals, the cutting blocks are net-shaped, the surfaces of the, the heating pipe is used for increasing the air temperature in the inner cavity of the tank body, the workbench is provided with a controller, and the controller is used for controlling the granulation device to work; when the polycarboxylic acid high-performance water reducing agent is used, the common polycarboxylic acid high-performance water reducing agent is an aqueous solution, huge cost burden is brought to transportation and storage, powdery polycarboxylic acid high-performance water reducing agents are also available in the market, and the drying of the polycarboxylic acid high-performance water reducing agent is completed by a spray drying method, so that the drying efficiency of the polycarboxylic acid high-performance water reducing agent is low due to the fact that the liquid polycarboxylic acid high-performance water reducing agent is high in water content and needs to consume a large amount of heat during spray drying, and the problem is improved; filling a liquid polycarboxylic acid high-performance water reducing agent into a raw material barrel, and starting the granulating device comprehensively to enable the first motor and the second motor to be started simultaneously; when the first motor is started, the turntable is driven to rotate, so that the boss makes circular motion, and the connecting rod moves; the moving connecting rod drives the piston to do piston motion in the cylinder, and negative pressure is formed in the cylinder when the piston moves towards the direction far away from the semipermeable membrane, so that the liquid polycarboxylic acid high-performance water reducing agent in the raw material barrel is sucked; when the piston moves towards the direction close to the semipermeable membrane, the liquid polycarboxylic acid high-performance water reducing agent is extruded, so that water in the liquid polycarboxylic acid high-performance water reducing agent passes through the semipermeable membrane, and solute in the polycarboxylic acid high-performance water reducing agent solution is reserved; when the piston moves to the maximum stroke, the concentration of the liquid polycarboxylic acid high-performance water reducing agent in the cylinder is increased, so that the liquid polycarboxylic acid high-performance water reducing agent is changed into viscous fluid; then starting a thick slurry pump to suck the viscous fluid between the cylindrical barrels, and introducing the viscous fluid into the tank body through a hose and a branch pipe; when the second motor works, the rotating shaft is driven to rotate, so that the cutting block on the rotating shaft rotates; the rotating cutting block makes the fluid entering the tank body into small blocks, and meanwhile, the heating pipe on the side wall of the tank body generates heat, so that the temperature of air in the inner cavity of the tank body is increased; when the small blocks cut by the cutting block contact high-temperature gas, the small blocks are baked in the falling process, so that dried particles fall to the bottom of the tank body and are discharged from a discharge pipe at the bottom of the tank body; according to the invention, water in the liquid polycarboxylic acid high-performance water reducing agent is separated out through the filtration of the semipermeable membrane, so that the polycarboxylic acid high-performance water reducing agent can be quickly dried during drying, the production efficiency of the polycarboxylic acid high-performance water reducing agent is improved, and the energy consumption in the production process of the polycarboxylic acid high-performance water reducing agent is reduced; if a flaky cutter is used for cutting the polycarboxylic acid high-performance water reducing agent, the cut particles are large, and the polycarboxylic acid high-performance water reducing agent can be thrown to the inner wall of the tank body; the netted cutting piece makes polycarboxylate high performance water reducing agent form the inhomogeneous granule of size when cutting polycarboxylate high performance water reducing agent, provides inward pressure to the granule after the cutting simultaneously for the granule after the cutting is weakened to the trend of motion all around, thereby has reduced the probability of granule and jar internal wall contact, has guaranteed the normal work of jar body.

Preferably, the bulking agent component comprises:

3-5 parts of sodium bicarbonate

3-5 parts of sierozem powder

3-5 parts of montmorillonite

3-5 parts of baking soda

3-5 parts of sodium carbonate

2-4 parts of ammonium bicarbonate

2-4 parts of ammonium carbonate

1-3 parts of silica gel;

the baking soda, the soda ash, the ammonium bicarbonate, the ammonium carbonate and the sodium bicarbonate can generate a large amount of gas when being heated, so that a cavity is formed in an inner cavity of the small water reducing agent block, a large amount of water is evaporated to the place when the ash calcium powder is heated, a large amount of pore nets which are identical to each other are formed in the small water reducing agent block, the structure of the small water reducing agent block is looser, and the drying speed of the water reducing agent is further improved; the montmorillonite absorbs water at normal temperature, so that the water in the viscous water reducer is sucked out, and the sucked water is discharged when the montmorillonite is heated, thereby accelerating the drying speed of small water reducer blocks; silica gel is soft material, adds silica gel and can make the turbid liquid to help the distribution of loosening agent in water-reducing agent solution even, and then guaranteed the abundant integration of loosening agent and water-reducing agent.

Preferably, the preparation process of the bulking agent is as follows:

a1: respectively crushing solid sodium bicarbonate, sierozem powder, montmorillonite, baking soda, soda ash, ammonium bicarbonate and ammonium carbonate into powder by using a crushing device, and putting the crushed powder of the sodium bicarbonate, the sierozem powder, the montmorillonite, the baking soda and the soda ash into a container for mixing to obtain a powder mixture I;

a2: adding purified water into the container of A1, stirring, and ensuring the stirring direction to be consistent all the time in the stirring process to obtain a solution I;

a3: crushing the silica gel, putting the crushed silica gel into the first solution A2, and heating the solution during stirring to enable the first solution to become a viscous colloidal solution;

a4: put into the colloidal solution in A3 after mixing ammonium bicarbonate and ammonium carbonate's powder and stir, the stirring direction is unanimous all the time and opposite with the stirring direction in A2, can obtain the colloid loose agent, because of the baking soda, soda ash, ammonium bicarbonate, the solubility of ammonium carbonate in aqueous is less, with the baking soda, soda ash, ammonium bicarbonate, ammonium carbonate powder also can only dissolve part in adding water-reducing agent solution, thereby the baking soda has been restricted, soda ash, ammonium bicarbonate, the effect of ammonium carbonate, make loose agent form sticky colloidal solution through the addition of silica gel, distribution that can be even after adding water-reducing agent solution in the water-reducing agent solution is in the water-reducing agent solution, thereby make loose agent and the even doping of water-reducing agent after the dehydration together, thereby guaranteed that the stoving of water-reducing agent is more high-efficient and even, and the efficiency of pelletization device has further been guaranteed.

Preferably, more than two brackets are fixed on the side wall of the rotating shaft at equal intervals along the circumferential direction of the rotating shaft, and more than two iron wires are fixed between each bracket and the rotating shaft at equal intervals from top to bottom; when the cutting block is used, the cutting block can splash when cutting the polycarboxylic acid high-performance water reducing agent, and the polycarboxylic acid high-performance water reducing agent is thrown onto the inner wall of the tank body, so that the normal use of the tank body is influenced; through being provided with the support, it rotates to drive the support at pivot pivoted in-process through the iron wire, on the one hand, the inner wall of the jar body is cleaned through the rotation of support, thereby reduce the quantity of inner wall adhesion polycarboxylate high performance water reducing agent, thereby guarantee the normal use of heating pipe, on the other hand, carry out the secondary cutting to polycarboxylate high performance water reducing agent after the cutting piece cutting at iron wire pivoted in-process, thereby further reduce polycarboxylate high performance water reducing agent's particle size, make polycarboxylate high performance water reducing agent fritter be changeed the stoving at the in-process of whereabouts, and then improved the stoving effect of the invention.

Preferably, one end of the iron wire positioned on the support is higher than one end of the iron wire positioned on the rotating shaft, the diameter of the iron wire is 0.1mm-0.2mm, two adjacent iron wires 21 are arranged in parallel, and the distance between the two adjacent iron wires is 2-4 mm; when the cutting block is used, the polycarboxylic acid high-performance water reducing agent is adhered to the cutting block, so that the polycarboxylic acid high-performance water reducing agent is thrown to the inner wall of the tank body under the action of a new force, and excessive polycarboxylic acid high-performance water reducing agent is adhered to the inner wall of the tank body; the iron wire is set to be high at one end and low at the other end, so that the iron wire blocks and changes the direction of the collided polycarboxylic acid high-performance water reducing agent in the moving process, the polycarboxylic acid high-performance water reducing agent is collided to the direction of the rotating shaft after colliding with the iron wire, and the contact probability of the polycarboxylic acid high-performance water reducing agent and the inner wall of the tank body is reduced; meanwhile, the density of the iron wire is improved, the diameter of the iron wire is reduced, the cutting effect of the iron wire is better, and the drying effect of the iron wire drying machine is ensured.

Preferably, an annular air bag is arranged at one end, located on the first motor, of the cylindrical barrel, more than two spray heads are arranged at the bottom of an inner cavity of the tank body, an inflatable air bag is arranged at the bottom of the tank body, the inflatable air bag is communicated with the annular air bag and the spray heads through air pipes, a one-way valve is arranged between the inflatable air bag and the annular air bag, the inflatable air bag is also provided with the one-way valve, and the annular air bag is used for inflating the inflatable air bag; when in use, the piston does piston motion and simultaneously extrudes the annular air bag, so that the gas in the annular air bag enters the inflatable air bag; the gas entering the inflatable air bag enters the spray head through the air pipe, so that the spray head sprays the gas; the gas sprayed out of the spray head moves upwards, so that the falling speed of the small polycarboxylic acid high-performance water reducing agent blocks is reduced, the drying time of the small polycarboxylic acid high-performance water reducing agent blocks is prolonged, and the polycarboxylic acid high-performance water reducing agent is fully baked; meanwhile, the gas sprayed from the spray head enables the polycarboxylic acid high-performance water reducing agent to move towards the middle of the tank body, so that the probability of scaling on the inner wall of the tank body is reduced.

The diameter value of the bottom of the tank body is larger than that of the top of the tank body, and the air injection direction of the spray head is parallel to the inner side wall of the tank body; when the cutting block is used, the polycarboxylic acid high-performance water reducing agent is moved towards the side wall direction of the tank body because the polycarboxylic acid high-performance water reducing agent is cut by the cutting block and then moves in a parabolic motion; the diameter of the bottom of the tank body is larger, so that the polycarboxylic acid high-performance water reducing agent always keeps a certain distance from the inner wall of the tank body, and the problem of scaling of the inner wall of the tank body is avoided; meanwhile, the spray head sprays gas parallel to the inner side wall of the tank body, so that the gas moves upwards along the inner side wall of the tank body, a gas diaphragm is formed on the inner side wall of the tank body, the gas diaphragm isolates the polycarboxylic acid high-performance water reducing agent on the inner side wall of the tank body, and the scaling probability of the inner wall of the tank body is further reduced; in addition, the gas sprayed by the spray head reaches the top of the tank body, moves downwards and is discharged from the opening at the bottom of the tank body, so that the falling of the polycarboxylic acid high-performance water reducing agent is accelerated.

The invention has the following beneficial effects:

1. according to the production method of the polycarboxylic acid high-performance water reducing agent for the concrete pipe pile, the granulating device used in the method separates out water in the liquid polycarboxylic acid high-performance water reducing agent through filtration of the semipermeable membrane, so that the polycarboxylic acid high-performance water reducing agent can be quickly dried during drying, the production efficiency of the polycarboxylic acid high-performance water reducing agent is improved, and the energy consumption in the production process of the polycarboxylic acid high-performance water reducing agent is reduced.

2. According to the production method of the polycarboxylic acid high-performance water reducing agent for the concrete pipe pile, the granulating device used in the method is provided with the iron wires to perform secondary cutting on the small blocks of the polycarboxylic acid high-performance water reducing agent, and the small blocks of the polycarboxylic acid high-performance water reducing agent are redirected, so that the volume of particles of the polycarboxylic acid high-performance water reducing agent is reduced, and the collision between the particles of the polycarboxylic acid high-performance water reducing agent and the tank body is avoided, so that the using effect of the method is ensured.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a flow chart of the present invention;

FIG. 2 is a three-dimensional view of a pelletizing apparatus used in the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view showing a positional relationship between a piston and a cylinder;

FIG. 5 is a partial cross-sectional view of a can body;

in the figure: the device comprises a workbench 1, a first motor 2, a rotary table 3, a boss 4, a connecting rod 5, a cylindrical barrel 6, a piston 7, a semipermeable membrane 8, a water outlet pipe 9, a water pipe 10, a raw material barrel 11, an electromagnetic valve 12, a thick slurry pump 13, a hose 14, a branch pipe 15, a tank body 16, a second motor 17, a rotating shaft 18, a cutting block 19, a support 20, an iron wire 21, an annular air bag 22, a spray head 23 and an inflatable air bag 24.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the method for producing a polycarboxylic acid high-performance water reducing agent for a concrete pipe pile, provided by the invention, comprises the following steps:

s1: adding polyethylene glycol into a reaction kettle, adding methacrylic acid into the reaction kettle, adding concentrated sulfuric acid into the reaction kettle, and obtaining the intermediate macromonomer polyethylene glycol monomethacrylate of the water reducing agent after the reaction is finished;

s2: adding acrylic acid and a molecular weight regulator dodecyl mercaptan into the polyethylene glycol monomethacrylate obtained in S1, and adding deionized water to obtain a material A for later use; taking ammonium persulfate and adding deionized water to obtain a material B for later use; adding deionized water into a reaction kettle, adding a material A and a material B into the reaction kettle, and reacting to obtain a polymer;

s3: cooling the reacted polymer in the S2 to below 50 ℃, adding caustic soda flakes while stirring, adjusting the pH value to 6-7, obtaining a liquid polycarboxylic acid high-performance water reducing agent solution with the solid content of 30% after the reaction is finished, adding a colloid loosening agent into the solution, and stirring to obtain a semi-finished product, wherein the loosening agent generates gas when a granulation device is used for baking the water reducing agent, so that gaps are generated inside small water reducing agent blocks, and the drying of the small water reducing agent blocks is facilitated;

s4: putting the semi-finished product obtained in the step S3 into a raw material barrel 11 of a granulating device, filtering the water content of the liquid polycarboxylic acid high-performance water reducing agent by utilizing a semipermeable membrane 8 in the granulating device, so that the solid content of the liquid polycarboxylic acid high-performance water reducing agent rises to become sticky matter, then the polycarboxylic acid high-performance water reducing agent with the rising solid content is put into the tank body 16, the cutting block 19 in the tank body 16 is utilized to cut the polycarboxylic acid high-performance water reducing agent, baking the reduced polycarboxylic acid high-performance water reducing agent small blocks, preparing the polycarboxylic acid high-performance water reducing agent small blocks into granules, grinding the granular water reducing agent into powder by grinding equipment, bagging and storing, reducing the moisture content in the liquid polycarboxylic acid high-performance water reducing agent by a granulating device, the drying process of the polycarboxylic acid high-performance water reducing agent is shorter, and the energy consumption in the preparation process of the polycarboxylic acid high-performance water reducing agent is reduced;

wherein, the pelletization device that uses in S4 includes workstation 1, 1 top of workstation is fixed with motor 2, the output shaft end of motor 2 is fixed with carousel 3, it installs boss 4 to rotate on the carousel 3, 4 fixed surface of boss have connecting rod 5, 1 top of workstation is fixed with a cylinder section of thick bamboo 6, 6 inner chamber movable mounting of cylinder section of thick bamboo has piston 7, the one end that boss 4 was kept away from to connecting rod 5 rotates and installs on piston 7, the one end that a motor 2 was kept away from to a cylinder section of thick bamboo 6 is fixed with pellicle 8, the one end that a motor 2 was kept away from to a cylinder section of thick bamboo 6 is fixed with outlet pipe 9, outlet pipe 9 is used for discharging the water that pellicle 8 filtered out, pellicle 8 is used for filtering, 6 top of cylinder section of thick bamboo is equipped with water pipe 10, the one end that cylinder section of thick bamboo 6 was kept away from to water pipe 10 is, the water pipe 10 is used for communicating the raw material barrel 11 and the cylindrical barrel 6, one end of the water pipe 10, which is located at the cylindrical barrel 6, is provided with a one-way valve, the bottom end of the cylindrical barrel 6 is provided with a round hole, the round hole is provided with an electromagnetic valve 12, the top end of the workbench 1 is fixedly provided with a thick slurry pump 13, the inlet of the thick slurry pump 13 is fixedly connected with the outlet end of the electromagnetic valve 12, the outlet end of the thick slurry pump 13 is fixedly provided with a hose 14, one end, which is far away from the thick slurry pump 13, of the hose 14 is fixedly provided with more than two fork pipes 15, one end, which is far away from the hose 14, of each fork pipe 15 is fixedly provided with a tank body 16, the top end of the tank body 16 is fixedly provided with a second motor 17, the output shaft 18 is fixedly provided with an output shaft, the bottom end of the rotating shaft 18 is rotatably installed at the, the surface of the cutting block 19 is arc-shaped, the cutting block 19 is used for cutting a water reducing agent entering the tank body 16, an opening is formed in the bottom end of the tank body 16, a discharging pipe is arranged at the opening, a heating pipe is arranged on the inner side wall of the tank body 16 and used for increasing the air temperature in the inner cavity of the tank body 16, a controller is arranged on the workbench 1 and used for controlling the granulation device to work; when the polycarboxylic acid high-performance water reducing agent is used, the common polycarboxylic acid high-performance water reducing agent is an aqueous solution, huge cost burden is brought to transportation and storage, powdery polycarboxylic acid high-performance water reducing agents are also available in the market, and the drying of the polycarboxylic acid high-performance water reducing agent is completed by a spray drying method, so that the drying efficiency of the polycarboxylic acid high-performance water reducing agent is low due to the fact that the liquid polycarboxylic acid high-performance water reducing agent is high in water content and needs to consume a large amount of heat during spray drying, and the problem is improved; filling a liquid polycarboxylic acid high-performance water reducing agent into the raw material barrel 11, and starting the granulating device comprehensively to start the first motor 2 and the second motor 17 simultaneously; when the first motor 2 is started, the rotary disc 3 is driven to rotate, so that the boss 4 makes circular motion, and the connecting rod 5 moves; the moving connecting rod 5 drives the piston 7 to move in the cylinder 6 to form a piston 7, and when the piston 7 moves in a direction away from the semi-permeable membrane 8, negative pressure is formed in the cylinder 6, so that the liquid polycarboxylic acid high-performance water reducing agent in the raw material barrel 11 is sucked; when the piston 7 moves towards the direction close to the semipermeable membrane 8, the liquid polycarboxylic acid high-performance water reducing agent is extruded, so that water in the liquid polycarboxylic acid high-performance water reducing agent passes through the semipermeable membrane 8, and solute in the polycarboxylic acid high-performance water reducing agent solution is left; when the piston 7 moves to the maximum stroke, the concentration of the liquid polycarboxylic acid high-performance water reducing agent in the cylinder 6 is increased, so that the liquid polycarboxylic acid high-performance water reducing agent becomes viscous fluid; then a thick liquid pump 13 is started to suck the thick liquid between the cylindrical barrels 6, and the thick liquid is led into a tank body 16 through a hose 14 and a branch pipe 15; the second motor 17 drives the rotating shaft 18 to rotate when working, so that the cutting block 19 on the rotating shaft 18 rotates; the rotating cutting block 19 makes the fluid entering the tank 16 into small pieces, and meanwhile, the heating pipe on the side wall of the tank 16 generates heat, so that the temperature of the air in the inner cavity of the tank 16 is increased; when the small blocks cut by the cutting block 19 contact with high-temperature gas, the small blocks are baked in the falling process, so that dried particles fall to the bottom of the tank body 16 and are discharged from a discharge pipe at the bottom of the tank body 16; according to the invention, water in the liquid polycarboxylic acid high-performance water reducing agent is separated out through the filtration of the semipermeable membrane 8, so that the polycarboxylic acid high-performance water reducing agent can be quickly dried during drying, the production efficiency of the polycarboxylic acid high-performance water reducing agent is improved, and the energy consumption in the production process of the polycarboxylic acid high-performance water reducing agent is reduced; if a flaky cutter is used for cutting the polycarboxylic acid high-performance water reducing agent, the cut particles are large, and the polycarboxylic acid high-performance water reducing agent is thrown onto the inner wall of the tank body 16; the reticular cutting block 19 enables the polycarboxylic acid high-performance water reducing agent to form particles with uneven sizes when the polycarboxylic acid high-performance water reducing agent is cut, and meanwhile provides inward pressure for the cut particles, so that the tendency of the cut particles to move around is weakened, the probability of contact between the particles and the inner wall of the tank body 16 is reduced, and the normal work of the tank body 16 is ensured.

As a specific embodiment of the present invention, the bulking agent component comprises:

3-5 parts of sodium bicarbonate

3-5 parts of sierozem powder

3-5 parts of montmorillonite

3-5 parts of baking soda

3-5 parts of sodium carbonate

2-4 parts of ammonium bicarbonate

2-4 parts of ammonium carbonate

1-3 parts of silica gel;

the baking soda, the soda ash, the ammonium bicarbonate, the ammonium carbonate and the sodium bicarbonate can generate a large amount of gas when being heated, so that a cavity is formed in an inner cavity of the small water reducing agent block, a large amount of water is evaporated to the place when the ash calcium powder is heated, a large amount of pore nets which are identical to each other are formed in the small water reducing agent block, the structure of the small water reducing agent block is looser, and the drying speed of the water reducing agent is further improved; the montmorillonite absorbs water at normal temperature, so that the water in the viscous water reducer is sucked out, and the sucked water is discharged when the montmorillonite is heated, thereby accelerating the drying speed of small water reducer blocks; silica gel is soft material, adds silica gel and can make the turbid liquid to help the distribution of loosening agent in water-reducing agent solution even, and then guaranteed the abundant integration of loosening agent and water-reducing agent.

As a specific embodiment of the invention, the preparation process of the bulking agent comprises the following steps:

a1: respectively crushing solid sodium bicarbonate, sierozem powder, montmorillonite, baking soda, soda ash, ammonium bicarbonate and ammonium carbonate into powder by using a crushing device, and putting the crushed powder of the sodium bicarbonate, the sierozem powder, the montmorillonite, the baking soda and the soda ash into a container for mixing to obtain a powder mixture I;

a2: adding purified water into the container of A1, stirring, and ensuring the stirring direction to be consistent all the time in the stirring process to obtain a solution I;

a3: crushing the silica gel, putting the crushed silica gel into the first solution A2, and heating the solution during stirring to enable the first solution to become a viscous colloidal solution;

a4: put into the colloidal solution in A3 after mixing ammonium bicarbonate and ammonium carbonate's powder and stir, the stirring direction is unanimous all the time and opposite with the stirring direction in A2, can obtain the colloid loose agent, because of the baking soda, soda ash, ammonium bicarbonate, the solubility of ammonium carbonate in aqueous is less, with the baking soda, soda ash, ammonium bicarbonate, ammonium carbonate powder also can only dissolve part in adding water-reducing agent solution, thereby the baking soda has been restricted, soda ash, ammonium bicarbonate, the effect of ammonium carbonate, make loose agent form sticky colloidal solution through the addition of silica gel, distribution that can be even after adding water-reducing agent solution in the water-reducing agent solution is in the water-reducing agent solution, thereby make loose agent and the even doping of water-reducing agent after the dehydration together, thereby guaranteed that the stoving of water-reducing agent is more high-efficient and even, and the efficiency of pelletization device has further been guaranteed.

As a specific embodiment of the present invention, two or more brackets 20 are fixed on the side wall of the rotating shaft 18 at equal intervals along the circumferential direction thereof, and two or more iron wires 21 are fixed between the brackets 20 and the rotating shaft 18 at equal intervals from top to bottom; when the cutting block 19 is used, splashing can be generated when the cutting block is used for cutting the polycarboxylic acid high-performance water reducing agent, and the polycarboxylic acid high-performance water reducing agent is thrown onto the inner wall of the tank body 16, so that the normal use of the tank body 16 is influenced; through being provided with support 20, it rotates to drive support 20 at 18 pivoted in-processes of pivot through iron wire 21, on the one hand, rotate through support 20 and clean the inner wall of jar body 16, thereby reduce the quantity of inner wall adhesion polycarboxylate high performance water reducing agent, thereby guarantee the normal use of heating pipe, on the other hand, carry out the secondary cutting to the polycarboxylate high performance water reducing agent after cutting piece 19 cutting at iron wire 21 pivoted in-process, thereby further reduce the granule size of polycarboxylate high performance water reducing agent, make polycarboxylate high performance water reducing agent fritter be changeed the stoving at the in-process of whereabouts, and then improved the stoving effect of this invention.

As a specific embodiment of the present invention, one end of the iron wire 21 located on the bracket 20 is higher than one end of the iron wire 21 located on the rotating shaft 18, the diameter of the iron wire 21 is 0.1mm-0.2mm, two adjacent iron wires 21 are arranged in parallel, and the distance between the two adjacent iron wires 21 is 2-4 mm; when the water reducing agent is used, the cutting block 19 is adhered with the polycarboxylic acid high-performance water reducing agent, so that the polycarboxylic acid high-performance water reducing agent is thrown to the inner wall of the tank body 16 under the action of a new force, and excessive polycarboxylic acid high-performance water reducing agent is adhered to the inner wall of the tank body 16; the iron wire 21 is set to be high at one end and low at the other end, so that the iron wire 21 blocks and changes the direction of the collided polycarboxylic acid high-performance water reducing agent in the moving process, the polycarboxylic acid high-performance water reducing agent is collided to the direction of the rotating shaft 18 after colliding with the iron wire 21, and the contact probability of the polycarboxylic acid high-performance water reducing agent and the inner wall of the tank body 16 is reduced; meanwhile, the density of the iron wire 21 is improved, the diameter of the iron wire 21 is reduced, the cutting effect of the iron wire 21 is better, and the drying effect of the invention is ensured.

As a specific embodiment of the present invention, an annular air bag 22 is disposed at one end of the cylinder 6, which is located at the first motor 2, the bottom of the inner cavity of the tank 16 is provided with more than two nozzles 23, the bottom of the tank 16 is provided with an inflatable air bag 24, the inflatable air bag 24 is communicated with the annular air bag 22 and the nozzles 23 through air pipes, a one-way valve is disposed between the inflatable air bag 24 and the annular air bag 22, the inflatable air bag 24 is also provided with a one-way valve, and the annular air bag 22 is used for inflating the inflatable air bag 24; when in use, the piston 7 presses the annular air bag 22 while doing the motion of the piston 7, so that the gas in the annular air bag 22 enters the inflatable air bag 24; the gas entering the inflatable air bag 24 enters the spray head 23 through the air pipe, so that the spray head 23 sprays the gas; the gas sprayed out of the spray head 23 moves upwards, so that the falling speed of the small polycarboxylic acid high-performance water reducing agent blocks is reduced, the drying time of the small polycarboxylic acid high-performance water reducing agent blocks is prolonged, and the polycarboxylic acid high-performance water reducing agent is fully baked; meanwhile, the gas sprayed from the spray head 23 enables the polycarboxylic acid high-performance water reducing agent to move towards the middle of the tank 16, so that the probability of scaling on the inner wall of the tank 16 is reduced.

The diameter value of the bottom of the tank body 16 is larger than that of the top of the tank body, and the air injection direction of the spray head 23 is parallel to the inner side wall of the tank body 16; when in use, the polycarboxylic acid high-performance water reducing agent moves towards the side wall direction of the tank body 16 as the polycarboxylic acid high-performance water reducing agent is cut by the cutting block 19 and then moves in a parabolic motion; the diameter of the bottom of the tank body 16 is larger, so that the polycarboxylic acid high-performance water reducing agent always keeps a certain distance from the inner wall of the tank body 16, and the problem of scaling of the inner wall of the tank body 16 is avoided; meanwhile, the nozzle 23 sprays gas parallel to the inner side wall of the tank 16, so that the gas moves upwards along the inner side wall of the tank 16, a gas diaphragm is formed on the inner side wall of the tank 16, the gas diaphragm isolates the polycarboxylic acid high-performance water reducing agent on the inner side wall of the tank 16, and the scaling probability of the inner wall of the tank 16 is further reduced; in addition, the gas sprayed from the spray head 23 reaches the top of the tank 16, moves downward and is discharged from the opening at the bottom of the tank 16, so that the falling of the polycarboxylic acid high-performance water reducing agent is accelerated.

When the polycarboxylic acid high-performance water reducing agent is used, the common polycarboxylic acid high-performance water reducing agent is an aqueous solution, huge cost burden is brought to transportation and storage, powdery polycarboxylic acid high-performance water reducing agents are also available in the market, and the drying of the polycarboxylic acid high-performance water reducing agent is completed by a spray drying method, so that the drying efficiency of the polycarboxylic acid high-performance water reducing agent is low due to the fact that the liquid polycarboxylic acid high-performance water reducing agent is high in water content and needs to consume a large amount of heat during spray drying, and the problem is improved; filling a liquid polycarboxylic acid high-performance water reducing agent into the raw material barrel 11, and starting the granulating device comprehensively to start the first motor 2 and the second motor 17 simultaneously; when the first motor 2 is started, the rotary disc 3 is driven to rotate, so that the boss 4 makes circular motion, and the connecting rod 5 moves; the moving connecting rod 5 drives the piston 7 to move in the cylinder 6 to form a piston 7, and when the piston 7 moves in a direction away from the semi-permeable membrane 8, negative pressure is formed in the cylinder 6, so that the liquid polycarboxylic acid high-performance water reducing agent in the raw material barrel 11 is sucked; when the piston 7 moves towards the direction close to the semipermeable membrane 8, the liquid polycarboxylic acid high-performance water reducing agent is extruded, so that water in the liquid polycarboxylic acid high-performance water reducing agent passes through the semipermeable membrane 8, and solute in the polycarboxylic acid high-performance water reducing agent solution is left; when the piston 7 moves to the maximum stroke, the concentration of the liquid polycarboxylic acid high-performance water reducing agent in the cylinder 6 is increased, so that the liquid polycarboxylic acid high-performance water reducing agent becomes viscous fluid; then a thick liquid pump 13 is started to suck the thick liquid between the cylindrical barrels 6, and the thick liquid is led into a tank body 16 through a hose 14 and a branch pipe 15; the second motor 17 drives the rotating shaft 18 to rotate when working, so that the cutting block 19 on the rotating shaft 18 rotates; the rotating cutting block 19 makes the fluid entering the tank 16 into small pieces, and meanwhile, the heating pipe on the side wall of the tank 16 generates heat, so that the temperature of the air in the inner cavity of the tank 16 is increased; when the small blocks cut by the cutting block 19 contact with high-temperature gas, the small blocks are baked in the falling process, so that dried particles fall to the bottom of the tank body 16 and are discharged from a discharge pipe at the bottom of the tank body 16; according to the invention, water in the liquid polycarboxylic acid high-performance water reducing agent is separated out through the filtration of the semipermeable membrane 8, so that the polycarboxylic acid high-performance water reducing agent can be quickly dried during drying, the production efficiency of the polycarboxylic acid high-performance water reducing agent is improved, and the energy consumption in the production process of the polycarboxylic acid high-performance water reducing agent is reduced; if a flaky cutter is used for cutting the polycarboxylic acid high-performance water reducing agent, the cut particles are large, and the polycarboxylic acid high-performance water reducing agent is thrown onto the inner wall of the tank body 16; the reticular cutting block 19 enables the polycarboxylic acid high-performance water reducing agent to form particles with uneven sizes when the polycarboxylic acid high-performance water reducing agent is cut, and meanwhile provides inward pressure for the cut particles, so that the tendency of the cut particles to move around is weakened, the probability of contact between the particles and the inner wall of the tank body 16 is reduced, and the normal work of the tank body 16 is ensured.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.