Powder water reducing agent production device and water reducing agent based on polycarboxylic acid monomer

Abstract

The invention relates to the technical field of powder drying, in particular to a powder water reducing agent production device and a water reducing agent based on polycarboxylic acid monomers. Comprising a support frame; the rotary gas injection frame is rotationally connected to the supporting frame, and the rotary gas injection frame is fixedly connected with an inner ring; the fixing frame is fixedly connected to the supporting frame, the fixing frame is rotationally connected with an outer ring in a sealed mode, and the fixing frame, the inner ring and the outer ring are matched to form a first closed cavity; the stock bin is fixedly connected to the supporting frame, and the stock bin is fixedly connected with a first scraper; and the second scraper is fixedly connected to the supporting frame. The outer ring and the inner ring are matched to form the annular roller, so that slurry can be adhered to the inner wall and the outer wall of the annular roller, the adhesion area of the slurry is increased, the utilization rate of steam heat is increased, and the water reducer is synthesized after polyethylene glycol is added based on a polycarboxylic acid water reducer monomer, so that the water reducer has excellent workability and stable performance.

Description

Technical Field

[0001] The invention relates to the technical field of powder drying, and in particular to a powder water reducing agent production device and a water reducing agent based on polycarboxylic acid monomers. Background Art

[0002] Polycarboxylic acid powder water reducer is a high-performance concrete admixture that converts liquid polycarboxylic acid water reducer into solid powder form. Compared with traditional liquid water reducer, powder water reducer has the advantages of convenient storage, convenient transportation and not easy to deteriorate. It is widely used in modern concrete engineering. Converting liquid polycarboxylic acid water reducer into solid powder form requires evaporating the water inside it through a drum scraper dryer. The drum scraper dryer achieves the purpose of drying by exchanging heat between the material attached to the surface of the drum and the heat medium inside the drum, so that the water in the material attached to the surface of the drum evaporates rapidly. However, the drum of the existing drum scraper dryer is cylindrical, and the slurry can only be attached to the outer wall of the drum and heat exchange with the heat medium in the drum to achieve material drying, resulting in low heat utilization of the heat medium inside the drum, thereby causing low production capacity of the water reducer. Summary of the invention

[0003] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a powder water reducing agent production device and a water reducing agent based on polycarboxylic acid monomers.

[0004] The technical solution of the present invention is: a powder water reducing agent production device, comprising: a support frame; a rotating air injection frame, which is rotatably connected to the support frame, an air injection channel is arranged in the rotating air injection frame, and the rotating air injection frame is fixedly connected to an inner ring; a fixed frame, which is fixedly connected to the support frame, the fixed frame is sealingly rotatably connected to an outer ring, the outer ring is sealingly rotatably connected to the inner ring, the fixed frame, the inner ring and the outer ring cooperate to form a first closed cavity, and the air injection channel in the rotating air injection frame is connected to the first closed cavity, the fixed frame is fixedly connected to an air outlet pipe and a drain pipe, and the air outlet pipe and the drain pipe on the fixed frame are both connected to the first closed cavity; a silo, which is fixedly connected to the support frame and is used to store slurry to be dried, and the silo is fixedly connected to a first scraper for scraping off dried matter outside the outer ring; a second scraper, which is fixedly connected to the support frame and is used to scrape off dried matter on the inner ring; a reversing component, which is arranged on the support frame and is used to make the inner ring and the outer ring rotate in opposite directions.

[0005] As a preferred technical solution of the present invention, the reversing component includes: a rotating frame, rotatably connected to the supporting frame, the rotating frame is rotatably connected to the rotating gas injection frame, and the rotating frame is fixedly connected to the outer ring; a first gear ring, fixedly connected to the rotating gas injection frame; a connecting frame, fixedly connected to the supporting frame, the connecting frame is rotatably connected to a first gear meshing with the first gear ring; a second gear ring, fixedly connected to the rotating frame, the second gear ring meshing with the first gear; a plurality of push plates, which are respectively fixedly connected to the inner ring and the outer ring, and are located in the first closed cavity; a driving component, arranged on the connecting frame, for driving the first gear ring to rotate.

[0006] As a preferred technical solution of the present invention, a linear array of notches is provided on the push plate, and the notches of the push plate on the inner ring and the notches of the push plate on the outer ring are staggered.

[0007] As a preferred technical solution of the present invention, the pitch circle diameter of the first gear ring is larger than the pitch circle diameter of the second gear ring, so as to make the rotation speed of the inner ring slower than the rotation speed of the outer ring.

[0008] As a preferred technical solution of the present invention, the driving assembly includes: a first servo motor fixedly connected to the connecting frame; a rotating table fixedly connected to the output shaft of the first servo motor; a reducer fixedly connected to the connecting frame, the input shaft of the reducer is provided with a sliding disk that fits with the rotating table, and the output shaft of the reducer is fixedly connected to a second gear that meshes with the first gear ring.

[0009] As a preferred technical solution of the present invention, it also includes: a detection rotating component, which is arranged in the silo and is used to detect the viscosity of the slurry, and the detection rotating component includes: a second servo motor, which is fixedly connected to the silo; a turntable, which is fixedly connected to the output shaft of the second servo motor; a stirring shaft, which is sealed and rotatably connected in the silo, and the stirring shaft is rotatably connected to the turntable; a distance measuring component, which is arranged on the turntable and is used to detect the relative rotation distance between the turntable and the stirring shaft.

[0010] As a preferred technical solution of the present invention, the distance measuring component includes: a fixed cylinder, fixedly connected to the stirring shaft, and a liquid bag is arranged in the fixed cylinder; an arc-shaped push rod, fixedly connected to the turntable, the fixed cylinder and the arc-shaped push rod are slidably connected, and the arc-shaped push rod is used to squeeze the liquid bag in the fixed cylinder; a fixed ring, fixedly connected to the silo, the fixed ring is sealingly and rotatably connected to the rotating ring, and the two cooperate to form a second closed cavity, and the second closed cavity is connected to the liquid bag in the fixed cylinder through a pipeline; an adjustment component is arranged on the connecting frame, and is used to change the fitting position of the sliding disk and the rotating table.

[0011] As a preferred technical solution of the present invention, the adjustment component includes: a first elastic push rod, fixedly connected to the connecting frame, the telescopic end of the first elastic push rod is slidably connected to the sliding disk, and the input shaft of the reducer is splined to the sliding disk; a second elastic push rod, fixedly connected to the material bin, the fixed part of the first elastic push rod and the fixed part of the second elastic push rod are fixedly connected and connected with a connecting pipe; a prying rod, rotatably connected to the material bin, one end of the prying rod is fitted with the telescopic end of the second elastic push rod; a docking sleeve, fixedly connected to the fixing ring, and the docking sleeve is connected to the second closed cavity formed by the fixing ring and the rotating ring, the docking sleeve is sealingly and slidably connected with a push shaft, an elastic element is arranged between the docking sleeve and the push shaft, and the push shaft is fitted with the other end of the prying rod; a regulating component is arranged on the connecting frame, and is used to regulate the fitting position of the sliding disk and the rotating table according to temperature.

[0012] As a preferred technical solution of the present invention, the regulating component includes: an adjusting cylinder, which is fixedly connected to the connecting frame and connected to the connecting pipe; an electric push rod, which is fixedly connected to the adjusting cylinder, and the telescopic end of the adjusting cylinder is sealed and slidably connected to the adjusting cylinder; a temperature sensor, which is arranged in the gas injection channel of the rotating gas injection frame and is used to detect the steam temperature.

[0013] The water reducer based on polycarboxylic acid monomer uses the above-mentioned powder water reducer production device, as follows: Polycarboxylate water reducer is prepared by adding polyethylene glycol to monomers (such as HPEG, TPEG, EPEG) and dissolving them in water, and then adding unsaturated acid, reducing agent, oxidizing agent and chain transfer agent to polymerize; The unsaturated acid is acrylic acid, the reducing agent is vitamin C, the oxidizing agent is hydrogen peroxide, and the chain transfer agent is mercaptopropionic acid; The specific preparation steps are as follows: Step 1: Prepare the base material, add 340 parts of water, 100 parts of polyethylene glycol, 220 parts of monomer, 5 parts of acrylic acid, 2 parts of ferrous sulfate (1% content), stir to dissolve, and then add 3 parts of hydrogen peroxide; Step 2: Add 28 parts of acrylic acid dropwise and add water to 80 parts; Step 3: Add 0.3 parts of vitamin C and 2 parts of mercaptopropionic acid, and then add water to 80 parts; Step 4: Keep warm for 2 hours under stirring, then add 5 parts of sodium hydroxide (added after dissolving in water), and add water to a total of 1000 parts; Step 5: Dry the prepared slurry to obtain a powdered polycarboxylic acid water-reducing agent.

[0014] Beneficial effects: 1. The present invention forms an annular drum by combining an outer ring and an inner ring, so that both the inner wall and the outer wall of the annular drum can be attached with slurry, thereby increasing the attachment area of ​​the slurry, improving the utilization rate of steam heat, and avoiding only using the outer wall to attach the slurry, resulting in low steam heat utilization rate.

[0015] 2. By making the inner ring rotate slower than the outer ring, the heat exchange time of the slurry on the inner ring is prolonged to ensure that the slurry on the inner ring is dried thoroughly. At the same time, the push plate stirs and recoils the steam, increasing the turbulence of the steam and improving the utilization rate of the steam heat.

[0016] 3. The slurry in the silo is stirred by the stirring shaft to avoid slurry sedimentation. At the same time, the viscosity of the slurry is detected in real time, and the rotation speed of the inner and outer rings is automatically changed to ensure that the slurry attached to the inner and outer rings can be fully dried, thereby improving the preparation quality of the powder water reducer.

[0017] 4. By detecting the steam temperature, the rotation speed of the inner and outer rings is automatically adjusted to extend the heat exchange time between the slurry and the steam, ensuring that the slurry can be dried thoroughly and improving the preparation quality of the powder water reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the outer ring of the present invention; Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the inner ring and the outer ring of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating frame and the first gear ring of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the rotating table and the sliding disk of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the second servo motor and the stirring shaft of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the fixed cylinder and the arc-shaped push rod of the present invention; Figure 8 It is a three-dimensional structural cross-sectional view of the fixed ring and the rotating ring of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the elastic push rod of the present invention.

[0019] The markings in the figure are: 1-support frame, 2-rotating gas injection frame, 3-inner ring, 4-fixed frame, 5-outer ring, 6-first scraper, 7-bin, 8-second scraper, 201-rotating frame, 202-first gear ring, 203-connecting frame, 204-first gear, 205-second gear ring, 206-push plate, 301-first servo motor, 302-rotating table, 303-reducer, 304-sliding plate, 305 -second gear, 401-second servo motor, 402-turntable, 403-stirring shaft, 404-fixed cylinder, 405-arc push rod, 406-fixed ring, 407-rotating ring, 501-first elastic push rod, 502-second elastic push rod, 503-connecting pipe, 504-prying rod, 505-docking cylinder, 506-push shaft, 507-elastic element, 601-adjusting cylinder, 602-electric push rod. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0021] The existing scraper drum dryer adopts a cylindrical drum design, which only allows the slurry to adhere to the outer wall of the drum for drying. Therefore, the internal heat medium can only contact the slurry on the outer wall of the drum for heat transfer. This method not only limits the effective use of the heat medium, but also leads to low heat utilization rate, resulting in low production capacity of water reducer preparation.

[0022] Example 1: Powder water reducing agent production device, such as Figure 1-Figure 4 As shown, it includes: a support frame 1; a rotating gas injection frame 2, which is rotatably connected to the support frame 1, an injection channel is arranged in the rotating gas injection frame 2, and the rotating gas injection frame 2 is fixedly connected to an inner ring 3; a fixed frame 4, which is fixedly connected to the support frame 1, and the fixed frame 4 is sealed and rotatably connected to an outer ring 5, and the outer ring 5 is sealed and rotatably connected to the inner ring 3, the fixed frame 4, the inner ring 3 and the outer ring 5 cooperate to form a first closed cavity, and the injection channel in the rotating gas injection frame 2 is connected to the first closed cavity, the fixed frame 4 is fixedly connected to an air outlet pipe and a drain pipe, and the air outlet pipe and the drain pipe on the fixed frame 4 are both connected to the first closed cavity; a silo 7, which is fixedly connected to the support frame 1 and is used to store slurry to be dried, and the silo 7 is fixedly connected to a first scraper 6 for scraping off the dried matter outside the outer ring 5; a second scraper 8, which is fixedly connected to the support frame 1 and is used to scrape off the dried matter on the inner ring 3; a reversing component, which is arranged on the support frame 1 and is used to make the inner ring 3 and the outer ring 5 rotate in opposite directions.

[0023] In the above scheme, a control system is provided on the support frame 1, and the rotating gas injection frame 2 is composed of a main pipe and several annular array auxiliary pipes, and the several annular array auxiliary pipes are all connected to the main pipe, and the main pipe is connected to the external steam injection device, and the annular array auxiliary pipes are all connected to the first closed cavity, which is used to make the steam enter the first closed cavity evenly, and the air outlet pipe is used to discharge the steam after heat exchange, and the drain pipe is used to discharge the condensed water. The bottom of the inner ring 3 and the bottom of the outer ring 5 are both lower than the upper side of the silo 7, which is used to make the slurry in the silo 7 adhere to the inner ring 3 and the outer ring 5, and the bottom of the silo 7 is connected to the external grouting device, and the grouting device is connected to the control The control system is electrically connected to continuously inject slurry into the silo 7 and maintain the slurry liquid level in the silo 7 stable. The vertical heights of the first scraper 6 and the second scraper 8 are the same and both are higher than the height of the slurry liquid level in the silo 7. The first scraper 6 and the second scraper 8 are both equipped with a conveying device electrically connected to the control system, such as a belt conveyor, which is used to convey the scraped powder water reducer to prevent accumulation. The outer ring 5 and the inner ring 3 cooperate to form an annular drum, so that the inner wall and the outer wall of the annular drum can be attached with slurry, thereby increasing the attachment area of ​​the slurry and improving the utilization rate of steam heat. It is avoided that only the outer wall is attached with slurry, resulting in low steam heat utilization rate.

[0024] Specifically, Figure 1 , Figure 3-Figure 5 As shown, the reversing assembly includes: a rotating frame 201, which is rotatably connected to the support frame 1, the rotating frame 201 is rotatably connected to the rotating gas injection frame 2, and the rotating frame 201 is fixedly connected to the outer ring 5; a first gear ring 202, which is fixedly connected to the rotating gas injection frame 2; a connecting frame 203, which is fixedly connected to the support frame 1, and the connecting frame 203 is rotatably connected to a first gear 204 meshing with the first gear ring 202; a second gear ring 205, which is fixedly connected to the rotating frame 201, and the second gear ring 205 meshes with the first gear 204; a push There are several plates 206, which are fixedly connected to the inner ring 3 and the outer ring 5 respectively, and are located in the first closed cavity; the driving assembly is arranged on the connecting frame 203, and is used to drive the first gear ring 202 to rotate; a linear array of notches are opened on the push plate 206, and the notches on the push plate 206 on the inner ring 3 and the notches on the push plate 206 on the outer ring 5 are staggered; the pitch circle diameter of the first gear ring 202 is larger than the pitch circle diameter of the second gear ring 205, which is used to make the rotation speed of the inner ring 3 slower than the rotation speed of the outer ring 5.

[0025] In the above scheme, the rotating frame 201 and the fixed frame 4 are both made of high-strength steel and have a certain structural strength to ensure the stable rotation of the inner ring 3 and the outer ring 5. The number of push plates 206 on the inner ring 3 is the same as the number of push plates 206 on the outer ring 5, and they are all distributed in a ring with equal intervals, so that the push plates 206 stir and recoil the steam, increase the degree of turbulence of the steam, and improve the utilization rate of the steam heat. The pitch circle diameter of the first gear ring 202 is larger than the pitch circle diameter of the second gear ring 205. The first gear 204 is used to transmit the rotation speed of the inner ring 3 slower than the rotation speed of the outer ring 5, thereby extending the heat exchange time of the slurry on the inner ring 3 and ensuring that the slurry on the inner ring 3 is thoroughly dried.

[0026] Specifically, Figure 1 , Figure 4 and Figure 5 As shown, the driving assembly includes: a first servo motor 301, fixedly connected to the connecting frame 203; a rotating table 302, fixedly connected to the output shaft of the first servo motor 301; a reducer 303, fixedly connected to the connecting frame 203, the input shaft of the reducer 303 is provided with a sliding disk 304 that fits with the rotating table 302, and the output shaft of the reducer 303 is fixedly connected with a second gear 305 that meshes with the first gear ring 202.

[0027] In the above scheme, the first servo motor 301 is electrically connected to the control system, the rotating table 302 is a truncated table structure, and the side of the rotating table 302 with a larger diameter is located on the left, and the side with a smaller diameter is located on the right. The outside of the rotating table 302 and the sliding disk 304 are both provided with rough surfaces to increase the friction resistance therebetween, and the reducer 303 is used to reduce the running resistance of the first servo motor 301.

[0028] When the staff needs to prepare the water reducing agent powder, the slurry is injected into the silo 7 to a specific liquid level height (lower than the first scraper 6 and the second scraper 8), and the liquid level height must be higher than the bottom of the inner ring 3 and the outer ring 5. Then the staff turns on the external steam injection device to allow the steam to evenly enter the first closed cavity along the gas injection channel of the rotating gas injection frame 2 and flow along the first closed cavity until it is discharged along the exhaust pipe. At the same time, the first servo motor 301 is turned on, so that the output shaft of the first servo motor 301 drives the rotating table 302 to rotate synchronously, and the rotating table 302 drives the input shaft of the reducer 303 to rotate synchronously through the sliding plate 304. The output shaft of the reducer 303 drives the second gear 305 thereon to rotate synchronously, and the second gear 305 drives the first gear ring 202 to rotate. The first gear ring 202 drives the inner ring 3 to rotate synchronously by rotating the gas injection frame 2. The inner wall of the inner ring 3 is attached to the slurry in the silo 7. At the same time, the rotation of the first gear ring 202 drives the first gear 204 to rotate synchronously. The wheel 204 drives the rotating frame 201 to rotate in the opposite direction through the second gear ring 205, and the rotating frame 201 drives the outer ring 5 to rotate in the opposite direction. The outer wall of the outer ring 5 is attached to the slurry in the silo 7, and then as the outer ring 5 and the inner ring 3 rotate, the steam in the first closed cavity exchanges heat with the slurry attached to the outer ring 5 and the inner ring 3, so that the water in the slurry gradually evaporates to form powder, and this is done until the slurry outside the outer ring 5 contacts the first scraper 6, and the first scraper 6 scrapes off the slurry after drying, so that the drying is completed. The finished slurry is separated from the outer wall of the outer ring 5. Similarly, the second scraper 8 scrapes off the dried slurry on the inner ring 3. At the same time, the conveying device conveys the scraped powder water reducer to the outside. Then the outer ring 5 and the inner ring 3 continue to rotate and adhere to the slurry in the silo 7 again. This cycle is repeated until the preparation of the powder water reducer is completed. The outer ring 5 and the inner ring 3 cooperate to form an annular drum, so that the inner and outer walls of the annular drum can be adhered to the slurry, thereby increasing the adhesion area of ​​the slurry and improving the utilization rate of the steam heat.

[0029] When the outer ring 5 and the inner ring 3 rotate in opposite directions to dry the attached slurry, since the radius of the outer ring 5 is larger than the radius of the inner ring 3, the heat exchange time per unit area of ​​the outer ring 5 is longer than the heat exchange time per unit area of ​​the inner ring 3, resulting in different degrees of drying of the slurry on the outer ring 5 and the inner ring 3. Therefore, the rotation speed of the inner ring 3 is slower than that of the outer ring 5, which extends the heat exchange time of the slurry on the inner ring 3, ensures that the slurry on the inner ring 3 is thoroughly dried, and ensures the preparation quality of the powder water reducer. At the same time, the outer ring 5 and the inner ring 3 rotate in opposite directions, which will drive the internal push plate 206 to rotate synchronously. The push plate 206 on the outer ring 5 and the push plate 206 on the inner ring 3 rotate in opposite directions to stir and offset the steam, thereby increasing the disordered state of the steam and improving the utilization rate of the steam heat.

[0030] In this embodiment, the connection between the input shaft of the reducer 303 and the sliding disk 304 is a fixed connection, but it is limited to this embodiment. In other subsequent embodiments, the connection between the input shaft of the reducer 303 and the sliding disk 304 is a spline connection. Please refer to the specific description in the subsequent embodiments.

[0031] Embodiment 2: Based on embodiment 1, Figure 1 , Figure 6-Figure 8 As shown, it also includes: a detection rotation component, which is arranged in the silo 7 and is used to detect the viscosity of the slurry. The detection rotation component includes: a second servo motor 401, which is fixedly connected to the silo 7; a turntable 402, which is fixedly connected to the output shaft of the second servo motor 401; a stirring shaft 403, which is sealed and rotatably connected in the silo 7, and the stirring shaft 403 is rotatably connected to the turntable 402; a distance measuring component, which is arranged on the turntable 402 and is used to detect the relative rotation distance between the turntable 402 and the stirring shaft 403.

[0032] In the above scheme, the second servo motor 401 is electrically connected to the control system, and the fan blade shape of the stirring shaft 403 can be a rectangular plate, an inclined plate and a cylinder. The fan blade of the stirring shaft 403 can be freely set according to actual conditions. The slurry is stirred by the rotation of the stirring shaft 403 to prevent the slurry from depositing.

[0033] Specifically, Figure 6-Figure 8 As shown, the distance measuring component includes: a fixed cylinder 404, fixedly connected to the stirring shaft 403, and a liquid bag is arranged in the fixed cylinder 404; an arc push rod 405, fixedly connected to the turntable 402, the fixed cylinder 404 and the arc push rod 405 are slidably connected, and the arc push rod 405 is used to squeeze the liquid bag in the fixed cylinder 404; a fixed ring 406, fixedly connected to the silo 7, the fixed ring 406 is sealed and rotatably connected to the rotating ring 407, and the two cooperate to form a second closed cavity, and the second closed cavity is connected to the liquid bag in the fixed cylinder 404 through a pipeline; an adjustment component is arranged on the connecting frame 203, and is used to change the fitting position of the sliding disk 304 and the rotating table 302.

[0034] In the above scheme, the liquid sac is fitted with the inner wall of the fixed cylinder 404, and the liquid sac, the pipeline and the second closed cavity are all filled with hydraulic oil. The fixed cylinder 404 is an arc-shaped cylinder, and the arc is the same as that of the arc-shaped push rod 405, which facilitates the arc-shaped push rod 405 to slide into the fixed cylinder 404 to squeeze the liquid sac, and the viscosity of the slurry is detected by the relative sliding distance between the arc-shaped push rod 405 and the fixed cylinder 404.

[0035] Specifically, Figure 7-Figure 9As shown, the adjustment assembly includes: a first elastic push rod 501, fixedly connected to the connecting frame 203, the telescopic end of the first elastic push rod 501 is slidably connected to the sliding plate 304, and the input shaft of the reducer 303 is spline-connected to the sliding plate 304; a second elastic push rod 502, fixedly connected to the silo 7, the fixed part of the first elastic push rod 501 and the fixed part of the second elastic push rod 502 are fixedly connected and connected with a connecting pipe 503; a prying rod 504, rotatably connected to the silo 7, one end of the prying rod 504 is connected to the second The telescopic end of the elastic push rod 502 is fitted; the docking sleeve 505 is fixedly connected to the fixed ring 406, and the docking sleeve 505 is connected to the second closed cavity formed by the fixed ring 406 and the rotating ring 407, the docking sleeve 505 is sealingly and slidably connected with the push shaft 506, and an elastic element 507 is arranged between the docking sleeve 505 and the push shaft 506, and the push shaft 506 is fitted with the other end of the prying rod 504; the regulating component is arranged on the connecting frame 203, and is used to regulate the fitting position of the sliding disk 304 and the rotating table 302 according to the temperature.

[0036] In the above scheme, the fixed part of the first elastic push rod 501, the fixed part of the second elastic push rod 502 and the connecting pipe 503 are all filled with hydraulic oil. The connecting pipe 503 is a flexible pipe to reduce the space occupancy rate. The distance from the rotation point of the prying rod 504 and the silo 7 to the push shaft 506 is greater than the distance from the rotation point of the prying rod 504 and the silo 7 to the telescopic end of the second elastic push rod 502, thereby forming a lever effect, so that the push shaft 506 can drive the telescopic end of the second elastic push rod 502 to move through the prying rod 504. The elastic element 507 is a spring, which is used to drive the push shaft 506 to reset. By real-time detection of the viscosity of the slurry, the rotation speed of the inner ring 3 and the outer ring 5 is automatically changed to avoid the increase of the slurry viscosity, resulting in an increase in the slurry adhesion thickness, resulting in incomplete drying of the attached slurry, affecting the preparation quality of the powder water reducer.

[0037] Specifically, Figure 5 and Fig. 9 As shown, the regulating component includes: an regulating cylinder 601, which is fixedly connected to the connecting frame 203, and the regulating cylinder 601 is connected to the connecting pipe 503; an electric push rod 602, which is fixedly connected to the regulating cylinder 601, and the telescopic end of the regulating cylinder 601 is sealed and slidably connected to the regulating cylinder 601; a temperature sensor is arranged in the gas injection channel of the rotating gas injection frame 2, and is used to detect the steam temperature.

[0038] In the above scheme, the hydraulic oil flowing in the connecting pipe 503 passes through the regulating cylinder 601, and the electric push rod 602 and the temperature sensor are electrically connected to the control system. The steam temperature is detected by the temperature sensor. When the temperature fluctuation exceeds 5°C-10°C (the specific temperature can be set freely), the electric push rod 602 will be turned on once. Each time the electric push rod 602 is triggered, the movement distance of its telescopic end is the same, that is, the rotation speed of the inner ring 3 and the outer ring 5 is automatically adjusted on the basis of the first elastic push rod 501 to extend the heat exchange time between the slurry and the steam, ensure that the slurry can be dried thoroughly, and improve the preparation effect of the powder water reducer.

[0039] During the drying process of the water reducing agent, it is necessary to continuously replenish slurry into the silo 7 to ensure that the liquid level of the slurry in the silo 7 is always in a stable state. The viscosity of the subsequently replenished slurry increases due to the evaporation of water or aging effect due to long-term storage. The increase in the slurry viscosity will cause the thickness of the slurry attached to the outside of the inner ring 3 and the outer ring 5 to increase simultaneously, resulting in incomplete drying of the slurry attached to the outside of the inner ring 3 and the outer ring 5. Therefore, after the slurry in the silo 7 is injected to a specific liquid level height, the staff turns on the second servo motor 401, and the output shaft of the second servo motor 401 drives the turntable 402 to rotate, so that the turntable 402 drives the stirring shaft 403 to rotate through the arc push rod 405, the fixed cylinder 404 and the liquid bag in the fixed cylinder 404, so that the stirring shaft 403 stirs the slurry in the silo 7 to avoid precipitation of the slurry in the silo 7, resulting in different viscosities of the slurry in the silo 7, thereby reducing the preparation effect of the water reducing agent powder.

[0040] When the viscosity of the slurry in the silo 7 increases, the rotational resistance of the stirring shaft 403 increases. At this time, the output shaft of the second servo motor 401 drives the arc push rod 405 to squeeze the liquid bag in the fixed cylinder 404 through the turntable 402. When the liquid bag in the fixed cylinder 404 is squeezed by the arc push rod 405, the hydraulic oil inside the liquid bag in the fixed cylinder 404 enters the second closed cavity formed by the fixed ring 406 and the rotating ring 407 along the pipeline. The hydraulic oil in the second closed cavity enters the docking cylinder 505 and pushes the push shaft 506 to slide along the docking cylinder 505, so that the elastic element 507 is compressed. At this time, the push shaft 506 drives the telescopic end of the second elastic push rod 502 to slide downward through the prying rod 504, and the second elastic push rod 502 is pushed downward. The hydraulic oil in the fixed part of the elastic push rod 502 enters the connecting pipe 503 under the thrust of its telescopic end, and the hydraulic oil in the connecting pipe 503 enters the fixed part of the first elastic push rod 501. The hydraulic oil in the fixed part of the first elastic push rod 501 pushes its telescopic end to extend outward, and the telescopic end of the first elastic push rod 501 drives the sliding plate 304 to slide along the input shaft of the reducer 303, changes the fitting position of the sliding plate 304 and the rotating table 302, reduces the transmission ratio of the rotating table 302 to the reducer 303, slows down the rotation speed of the sliding plate 304, and then delays the rotation speed of the inner ring 3 and the outer ring 5, prolongs the drying time of the slurry on the inner ring 3 and the outer ring 5, and makes the slurry attached to the outside of the inner ring 3 and the outer ring 5 dry thoroughly.

[0041] This continues until the preparation of the water reducing agent powder is completed. At this time, the second servo motor 401 is turned off, and the remaining slurry in the silo 7 is transferred to prevent solidification. At this time, the stirring shaft 403 is reset, and the elastic element 507 drives the push shaft 506 to reset, so that the hydraulic oil in the second closed cavity flows back to the liquid bag of the fixed cylinder 404. At the same time, the telescopic end of the first elastic push rod 501 is reset, so that the hydraulic oil in the fixed part of the first elastic push rod 501 flows back along the connecting pipe 503 to the fixed part of the second elastic push rod 502, so that the telescopic end of the second elastic push rod 502 drives the prying rod 504 to reset. When it is necessary to prepare the powder water reducing agent again, repeat the above steps.

[0042] During the preparation process of the powder water-reducing agent, the temperature of the steam will fluctuate due to the combustion efficiency of the boiler. The temperature sensor will detect the steam temperature in the gas injection channel inside the rotating gas injection frame 2. If a significant change in the steam temperature is detected (hereinafter referred to as a decrease in the steam temperature), the temperature sensor will send a signal to the control terminal, and the control terminal will start the electric push rod 602. At this time, the telescopic end of the electric push rod 602 slides downward along the adjustment cylinder 601, and the telescopic end of the electric push rod 602 drives the hydraulic oil in the adjustment cylinder 601 to further enter the fixed part of the first elastic push rod 501 along the connecting pipe 503. The telescopic end of the first elastic push rod 501 drives the sliding disk 304 to change the fitting position with the rotating table 302, reducing the transmission ratio of the rotating table 302 to the sliding disk 304, that is, delaying the rotation speed of the inner ring 3 and the outer ring 5, prolonging the heat exchange time between the slurry and the steam, ensuring that the slurry can be dried thoroughly, and improving the preparation effect of the powder water-reducing agent.

[0043] When the temperature sensor detects that the water vapor temperature is reset to the set value, the telescopic end of the electric push rod 602 is reset synchronously, so that the hydraulic oil in the fixed part of the first elastic push rod 501 flows back to the regulating cylinder 601. When the water vapor temperature fluctuates again, the above steps are repeated.

[0044] Example 3: Based on Example 2, a water reducer based on polycarboxylic acid monomer is prepared by using the above-mentioned powder water reducer production device, as follows: Polycarboxylate water reducer is prepared by adding polyethylene glycol to monomers such as (HPEG, TPEG, EPEG) and dissolving them in water, and then adding unsaturated acid, reducing agent, oxidizing agent and chain transfer agent to polymerize; The unsaturated acid is acrylic acid, the reducing agent is vitamin C, the oxidizing agent is hydrogen peroxide, and the chain transfer agent is mercaptopropionic acid; The specific preparation steps are as follows: Step 1: Prepare the base material, add 340 parts of water and 150 parts of polyethylene glycol into the reactor to improve the dispersibility of cement particles, improve the workability of the water reducer, improve thermal stability, and help the structural stability during the drying process, add 170 parts of monomer, 2 parts of acrylic acid, and 3 parts of ferrous sulfate (1% content) to accelerate the polymerization reaction during the synthesis of polycarboxylic acid, stir and dissolve, and then add 3 parts of hydrogen peroxide; Step 2: Add 28 parts of acrylic acid dropwise and add water to 80 parts; Step 3: add 0.3 parts of vitamin C as a reducing agent, add 2 parts of mercaptopropionic acid to control the molecular weight distribution of the polymer, and then add water to 80 parts; Step 4: Keep warm for 2 hours under stirring conditions, then add 5 parts of sodium hydroxide (added after dissolving in water) to adjust the pH value to the neutral range to stabilize the performance of the water reducer, and add water to a total of 1000 parts; Step 5: Dry the prepared slurry to obtain a powdered polycarboxylic acid water-reducing agent.

[0045] The polycarboxylate water-reducing agent synthesized by the above process in this scheme has excellent workability, ensuring that the concrete mixture will not scratch or segregate during the construction process, thereby greatly improving the convenience of construction and quality stability. At the same time, this product shows extremely low sensitivity to changes in mixing water volume, sand and aggregate quality, which means that even under complex and changeable construction site conditions, it can maintain stable performance without frequent adjustment of the dosage, reducing potential hazards caused by over-addition.

[0046] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A powder water reducing agent production device, characterized in that: Included are: Support frame (1); A rotating gas injection frame (2) is rotatably connected to the support frame (1), a gas injection channel is provided in the rotating gas injection frame (2), and the rotating gas injection frame (2) is fixedly connected to an inner ring (3); A fixed frame (4) is fixedly connected to the support frame (1), the fixed frame (4) is sealingly rotatably connected to an outer ring (5), the outer ring (5) is sealingly rotatably connected to the inner ring (3), the fixed frame (4), the inner ring (3) and the outer ring (5) cooperate to form a first closed cavity, and the gas injection channel in the rotating gas injection frame (2) is connected to the first closed cavity, the fixed frame (4) is fixedly connected to an air outlet pipe and a drain pipe, and the air outlet pipe and the drain pipe on the fixed frame (4) are both connected to the first closed cavity; A silo (7) fixedly connected to the support frame (1) and used for storing slurry to be dried, wherein the silo (7) is fixedly connected to a first scraper (6) for scraping off dried matter outside the outer ring (5); a second scraper (8) fixedly connected to the support frame (1) and used for scraping off dried matter on the inner ring (3); A reversing assembly is arranged on the support frame (1) and is used to make the inner ring (3) and the outer ring (5) rotate in opposite directions.

2. The powder water reducing agent production device according to claim 1, characterized in that: The inversion component includes: A rotating frame (201) is rotatably connected to the support frame (1), the rotating frame (201) is rotatably connected to the rotating gas injection frame (2), and the rotating frame (201) is fixedly connected to the outer ring (5); A first gear ring (202) fixedly connected to the rotating gas injection frame (2); A connecting frame (203) fixedly connected to the supporting frame (1), the connecting frame (203) being rotatably connected to a first gear (204) meshing with the first gear ring (202); A second gear ring (205) fixedly connected to the rotating frame (201), the second gear ring (205) meshing with the first gear (204); There are a plurality of push plates (206), which are respectively fixedly connected to the inner ring (3) and the outer ring (5), and are located in the first closed cavity; A driving assembly is arranged on the connecting frame (203) and is used to drive the first gear ring (202) to rotate.

3. The powder water reducing agent production device according to claim 2, characterized in that: The push plate (206) is provided with notches in a linear array, and the notches of the push plate (206) on the inner ring (3) and the notches of the push plate (206) on the outer ring (5) are arranged in an alternating manner.

4. The powder water reducing agent production device according to claim 3, characterized in that: The pitch circle diameter of the first gear ring (202) is greater than the pitch circle diameter of the second gear ring (205), and is used to make the rotation speed of the inner ring (3) slower than the rotation speed of the outer ring (5).

5. The powder water reducing agent production device according to claim 4, characterized in that: The drive assembly comprises: A first servo motor (301) fixedly connected to the connecting frame (203); A rotating platform (302) fixedly connected to the output shaft of the first servo motor (301); A reducer (303) is fixedly connected to the connecting frame (203), the input shaft of the reducer (303) being provided with a sliding plate (304) that fits the rotating table (302), and the output shaft of the reducer (303) being fixedly connected with a second gear (305) that meshes with the first gear ring (202).

6. The powder water reducing agent production device according to claim 5, characterized in that: Also included are: The detection rotating assembly is arranged in the silo (7) and is used to detect the viscosity of the slurry. The detection rotating assembly comprises: A second servo motor (401) fixedly connected to the material bin (7); A rotating disk (402) fixedly connected to an output shaft of the second servo motor (401); A stirring shaft (403) is sealingly rotatably connected in the silo (7), and the stirring shaft (403) is rotatably connected to the rotating disk (402); A distance measuring component is arranged on the rotating disk (402) and is used to detect the relative rotation distance between the rotating disk (402) and the stirring shaft (403).

7. The powder water reducing agent production device according to claim 6, characterized in that: The distance measuring component comprises: A fixed cylinder (404) is fixedly connected to the stirring shaft (403), and a liquid capsule is arranged in the fixed cylinder (404); An arc-shaped push rod (405) is fixedly connected to the rotating disk (402), the fixed cylinder (404) is slidably connected to the arc-shaped push rod (405), and the arc-shaped push rod (405) is used to squeeze the liquid capsule in the fixed cylinder (404); A fixed ring (406) is fixedly connected to the silo (7); the fixed ring (406) is sealingly and rotatably connected to a rotating ring (407), and the two cooperate to form a second closed cavity; the second closed cavity is connected to the liquid bag in the fixed cylinder (404) through a pipeline; An adjustment component is arranged on the connecting frame (203) and is used to change the fitting position of the sliding plate (304) and the rotating table (302).

8. The powder water reducing agent production device according to claim 7, characterized in that: The adjustment component includes: A first elastic push rod (501) is fixedly connected to the connecting frame (203); a telescopic end of the first elastic push rod (501) is slidably connected to the sliding plate (304); and an input shaft of the reducer (303) is spline-connected to the sliding plate (304); A second elastic push rod (502) is fixedly connected to the material bin (7), and a fixed portion of the first elastic push rod (501) and a fixed portion of the second elastic push rod (502) are fixedly connected and communicated with a connecting pipe (503); A prying rod (504) is rotatably connected to the silo (7), and one end of the prying rod (504) is in contact with the telescopic end of the second elastic push rod (502); A docking cylinder (505) is fixedly connected to the fixing ring (406), and the docking cylinder (505) is communicated with a second closed cavity formed by the fixing ring (406) and the rotating ring (407); the docking cylinder (505) is sealingly and slidably connected to a push shaft (506); an elastic element (507) is provided between the docking cylinder (505) and the push shaft (506); and the push shaft (506) is in contact with the other end of the prying rod (504); A regulating component is arranged on the connecting frame (203) and is used to regulate the fitting position of the sliding plate (304) and the rotating table (302) according to the temperature.

9. The powder water reducing agent production device according to claim 8, characterized in that: The control components include: An adjusting cylinder (601) is fixedly connected to the connecting frame (203), and the adjusting cylinder (601) is in communication with the connecting pipe (503); An electric push rod (602) is fixedly connected to the adjusting cylinder (601), and a telescopic end of the adjusting cylinder (601) is sealingly and slidably connected to the adjusting cylinder (601); A temperature sensor is arranged in the gas injection channel of the rotating gas injection frame (2) and is used to detect the steam temperature.

10. A water reducer based on polycarboxylic acid monomers, using the powder water reducer production device according to claim 9, characterized in that: The details are as follows: Polycarboxylate water reducer is prepared by adding polyethylene glycol to monomers (such as HPEG, TPEG, EPEG) and dissolving them in water, and then adding unsaturated acid, reducing agent, oxidizing agent and chain transfer agent to polymerize; The unsaturated acid is acrylic acid, the reducing agent is vitamin C, the oxidizing agent is hydrogen peroxide, and the chain transfer agent is mercaptopropionic acid.

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