CN116870501A - High-performance concrete retarder preparation system and preparation method - Google Patents
High-performance concrete retarder preparation system and preparation method Download PDFInfo
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- CN116870501A CN116870501A CN202310901154.7A CN202310901154A CN116870501A CN 116870501 A CN116870501 A CN 116870501A CN 202310901154 A CN202310901154 A CN 202310901154A CN 116870501 A CN116870501 A CN 116870501A
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- filter screen
- retarder
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- shell
- groove
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- 238000002360 preparation method Methods 0.000 title claims abstract description 48
- 239000004574 high-performance concrete Substances 0.000 title claims abstract description 24
- 239000002245 particle Substances 0.000 claims abstract description 72
- 239000007921 spray Substances 0.000 claims abstract description 69
- 239000007787 solid Substances 0.000 claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 claims abstract description 39
- 238000001035 drying Methods 0.000 claims abstract description 30
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 239000000243 solution Substances 0.000 claims description 63
- 238000007790 scraping Methods 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 18
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 239000011343 solid material Substances 0.000 abstract description 50
- 239000000463 material Substances 0.000 abstract description 17
- 239000008187 granular material Substances 0.000 abstract description 12
- 238000004140 cleaning Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000004567 concrete Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 238000000889 atomisation Methods 0.000 description 5
- 239000010419 fine particle Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/16—Evaporating by spraying
- B01D1/20—Sprayers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6484—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a translatory movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention relates to the technical field of retarder preparation, in particular to a high-performance concrete retarder preparation system, which comprises the following components: a material conveying pipe is arranged above the drying furnace, and a spray head is arranged on the material conveying pipe; the shower nozzle includes shell, nozzle, and the shell is inside still to be provided with a circular filter screen that is used for filtering large granule solid, and the scraper blade is installed to the surface contact of filter screen one, is provided with drive arrangement on the shell, and the shell is inside still to be provided with collection device, and when the retarder solution was carried to conveying pipeline got into inside the shower nozzle, drive arrangement drove the scraper blade and rotates the scraper blade and clear up, scrapes into collection device inside with the large granule solid that can not pass through filter screen one on the filter screen one. The large-particle solid materials are prevented from being accumulated on the filtering device to obstruct the flow of retarder solution, the production stability of a retarder preparation system is improved, the time required for maintaining the spray nozzle in the production process is reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of retarder preparation, in particular to a high-performance concrete retarder preparation system and a preparation method.
Background
The concrete retarder has the function of delaying the initial setting and final setting time of concrete, and is widely applied to building construction. In the preparation process of the concrete retarder, solution preparation is needed to be carried out on the retarder, and after the retarder solution preparation is finished, the retarder solution is also needed to be dried, so that the powder retarder is finally prepared. The conventional drying method comprises the steps of spraying retarder solution into a drying chamber or a drying furnace through an atomization nozzle for drying, and directly obtaining the powdery retarder after moisture is evaporated after the vaporous retarder solution enters the drying chamber or the drying furnace.
However, in the process of preparing the powdery retarder by adopting the preparation method, part of large-particle objects in the retarder solution may not be completely dissolved, or part of raw materials are aggregated into larger particles in the process of preparing the solution, so that the solid components of the large particles cannot be smoothly sprayed out of the nozzle of the spray head because the solid components are larger than the nozzle of the spray head in the process of atomizing the retarder solution through the spray head, and as the large-particle solid components are accumulated in the spray head, the spraying amount of the spray head is smaller and smaller until the spray head is blocked, and the production of the retarder is influenced.
Aiming at the situation, the existing common means is to manually overhaul the spray head after blockage or comprehensively clean the spray head before each use so as to reduce the occurrence of blockage of the spray head in the production process. The application number is: CN202110521478.9, entitled "high performance concrete retarder preparation System and preparation method", is optimized and improved for the problems occurring in the above production, and the spray heads are detachably arranged, so that the spray heads can be rapidly detached in a threaded connection manner, and the spray heads can be rapidly removed, cleaned and replaced after the spray heads are blocked, so that the stability in use and the production efficiency of the equipment are ensured.
Said invention patent raises the speed of spray head replacement, so that it can reduce the time required for replacing and cleaning spray head and raise production efficiency, but still adopts the principle of manually cleaning after the spray head is blocked, if the spray head can not be cleaned and replaced in time, it can still result in the problems of reduced production efficiency and production stagnation, and even can result in equipment damage.
Therefore, the high-performance concrete retarder preparation system is provided, and the spray head is automatically cleaned when the retarder solution is sprayed through the spray head, so that the spray head is prevented from being blocked when the retarder solution is sprayed, or the time required by the spray head to be blocked is delayed, the spray head is prevented from being blocked in the production process of spraying the retarder solution, the production stability is guaranteed, and the production efficiency is improved.
Disclosure of Invention
The invention aims to provide a high-performance concrete retarder preparation system, which is characterized in that a self-cleaning device of an atomization spray head is arranged, so that the spray head is prevented from being blocked in the atomization process, the stability and the continuity of production are ensured, and the preparation efficiency of the system on the concrete retarder is further ensured.
In order to achieve the above object, the present invention provides a technical solution of a high performance concrete retarder preparation system, including:
the drying furnace can be a drying furnace for drying materials by hot air, or a drying furnace for drying materials by an electric heating furnace wall, or other forms of drying furnaces, a conveying pipe for conveying retarder solution is arranged above the drying furnace, a spray head for atomizing the retarder solution is arranged on a port of the conveying pipe, and the spray head is positioned in the drying furnace;
the spray head comprises a shell, the shell is cylindric, the shell adopts metal to make, and carry out rust-resistant treatment, shell fixed mounting is on the port of conveying pipeline, be provided with one or more nozzles on the shell, the nozzle has the function that enables spun solution atomizing, the inside filter screen that still is provided with of shell, filter screen one matches each other with the shell, and filter screen one is located between the port of nozzle and conveying pipeline, every aperture of filter screen one is less than or equal to the aperture of orifice on the nozzle for prevent the granule contact orifice that is greater than orifice aperture of orifice and blocks up the orifice, the surface contact of filter screen one installs a scraper blade, and the scraper blade is hugged closely a filter screen surface, and the scraper blade can adopt rigid plastics to make, like ABS, PP, PE, PET or other plastics of material, also can adopt metal to make, need carry out rust-resistant treatment when adopting metal to make, the jam filter screen one that drops after avoiding the piece to be provided with on the shell and be used for driving the scraper blade and rotate, drive device can be the kinetic energy motor that is used for retarder solution to open and close the scraper blade to drive, also can adopt the final device that the motion of the retarder solution to be used for the scraper blade or the inside of the solid retarder that can take place the solid particle collecting device that can also set up the inside the filter device that can be used for the inside the filter screen has the large-size filter chamber or can's the inside the filter chamber or can be set up the solid particle collecting device that can be used to drive the inside the filter device.
In the use, when the conveying pipeline sends retarder solution into the shower nozzle inside, can pass through the screening of the inside filter screen of shower nozzle first earlier, the solid particle that is greater than the filtration pore of filter screen first will not lead to the filtration pore, just avoided being greater than the granule of orifice diameter on the nozzle to block up the orifice, the scraper blade can rotate under drive arrangement's drive the scraper blade simultaneously, the scraper blade can stir the large granule solid that filter screen first was cut and gather together, can stir the large granule object that gathers together inside collection device at last, collection device is collected the large granule solid, avoid large granule solid to block up filter screen first. The nozzle inner structure is complicated and difficult to clean, and the cleaning of the first filter screen is more convenient, so the first filter screen is arranged to intercept solid materials with large particles, because the scraper blade exists, the large particle solids on the first filter screen can be scraped into the collecting device, so the solid with large particles on the first filter screen is difficult to accumulate, the solid materials in the filter holes of the first filter screen can be thinner even if the filter screen is blocked in the using process, the solid materials can be dispersed by the pressure of retarder solution in the input nozzle, and the scraper blade can avoid the blocking of the first filter screen effectively. Through setting up filter screen one, scraper blade, collection device, can effectively reduce the retarder and block up the phenomenon emergence of shower nozzle at the shower nozzle inside, ensured retarder preparation system's production stability at production process, reduce the required time of maintaining the shower nozzle to the efficiency of production has been improved.
Preferably, the driving device comprises a rotating ring which is rotatably arranged in the shell, the rotating ring is made of plastic, the quality of the rotating ring made of plastic is lighter than that of the rotating ring made of metal, the rotating ring is easier to rotate, meanwhile, the corrosion resistance of the plastic is higher, the production and maintenance costs are lower, a plurality of blades are fixedly arranged in the rotating ring, the circumference of each blade is uniformly distributed on the inner wall of the rotating ring, the material of each blade is identical to that of the rotating ring, the blades are integrally formed with the rotating ring, the strength of the blades is guaranteed, the length of the scraping plate is identical to the radius of the first filter screen, one end of the scraping plate is vertically and fixedly arranged on the inner wall of the rotating ring, and the other end of the scraping plate is positioned at the center of the first filter screen, so that the surface of the first filter screen can be comprehensively cleaned when the scraping plate rotates.
The blades drive the rotating ring to rotate under the impact of the flowing retarder solution, the rotating ring drives the scraping plate to rotate, the scraping plate attached to the surface of the first filter screen can scrape and clean the surface of the first filter screen, and large particle objects on the surface of the first filter screen are stirred to the collecting device to be collected. Compared with other driving modes, the device has the advantages that the fan blades are utilized to drive the rotating ring to rotate on the scraping plate, the kinetic energy of the flowing solution during the conveying of retarder solution is utilized as the driving force, no additional power source is needed to drive the rotating ring, meanwhile, because the inside of the spray head is used for conveying liquid, a device which is easy to damage in a liquid environment such as a motor is not needed to be arranged as a driving device, the form of the fan blades matched with the rotating ring is simpler in structure compared with the motor or other driving devices, the occupied space in the spray head is less, and the conveying of retarder solution cannot be influenced.
Preferably, the collecting device comprises a groove formed in the bottom of the rotating ring, the bottom of the rotating ring is tightly attached to the filter screen, the groove is formed along the bottom of the annular rotating ring, the groove is in a shape of C in the whole path of the bottom of the rotating ring, an opening for enabling massive solid particles to enter the groove is formed in the inner side wall of the rotating ring, the opening is located in front of the scraping plate in the rotating direction of the rotating ring, the minimum distance between the opening and the scraping plate is 0-2mm, solid particles accumulated on the scraping plate conveniently enter the opening, the opening is used as a reference object of the starting end of the groove, the groove is formed from the opening in a way of being opposite to the rotating direction of the rotating ring, and large-particle solids are conveniently filled into the groove when the rotating ring rotates. The bottom of the rotating ring is provided with a groove, and the groove is matched with a mounting surface arranged on the shell contacted with the bottom of the rotating ring to form a space for collecting large-particle solids.
An opening is formed in the inner side wall of the rotating ring, the opening is positioned at the position 0-2mm in front of the scraper in the rotating direction of the rotating ring, after the scraper scrapes large-particle solids on the first filter screen, the large-particle solids are accumulated in an included angle between the scraper and the rotating ring, accumulated large-particle solid materials move towards the opening under the guiding of the scraper under the rotation of the scraper, finally the accumulated large-particle solid materials enter the groove from the opening to be collected, the large-particle solid materials are prevented from blocking the first filter screen, and further, the large-particle solid materials are prevented from obstructing the atomization ejection of retarder solution from the nozzle, so that the production stability of the preparation system is ensured. The groove is formed in the bottom of the rotating ring, so that the weight of the rotating ring can be further reduced, the rotating ring is more beneficial to rotating under the driving of retarder solution, the using effect of the rotating ring is improved, meanwhile, the groove is formed in the bottom of the rotating ring as a container for collecting large-particle solid matters, redundant structures and devices are not required to be additionally added, the structural complexity of equipment can be reduced, and the utilization rate of the inner space of the shell is improved. Because the scraping plate needs to be fixedly connected with the inner wall of the rotating ring, in order to ensure the connection strength of the scraping plate, the opening is at most flush with the surface of the scraping plate (namely not smaller than 0 mm), meanwhile, in order to enable the scraping plate to quickly guide and enter the opening after intercepting the large-particle solids in retarder solution, the large-particle solids enter the groove to be collected, when the opening is arranged at a position which is more than 2mm away from the surface of the scraping plate, the large-particle solids cannot enter the opening in time after being guided by the scraping plate, and the large-particle solids are easy to float into the solution again when colliding with the inner wall of the protruding rotating ring between the scraping plate and the opening, so that the effect of quickly collecting the large-particle solids is not achieved; and because large-particle solids can not enter the opening fast and enter the groove for collection, the large-particle solids are easy to accumulate and are clamped at the included angle between the scraping plate and the rotating ring, the rotating burden of the rotating ring is increased, and the cleaning effect of the rotation of the scraping plate on the first filter screen is affected.
Preferably, a transverse plate is fixedly arranged at the top of the scraping plate, the transverse plate is made of the same material as the scraping plate, the transverse plate is matched with the scraping plate and the first filter screen to form a U-shaped notch, and the U-shaped notch faces the rotating direction of the rotating ring. When not setting up the diaphragm, after the solid material of macroparticle was scraped from a filter screen surface by the scraper blade, along with the rotation of scraper blade, can be brought the rotation together by the scraper blade, at pivoted in-process, probably can stir the solution because of the scraper blade and pass the scraper blade under the drive of solution rivers, and set up the diaphragm after, the solid material of macroparticle then can be restricted by the diaphragm, can not cross the scraper blade easily, in the spacing of scraper blade and diaphragm, only can get into the opening inside along the scraper blade under the drive of rivers, finally get into the inside collection of recess. The setting of diaphragm has further improved the collection efficiency and the collection effect of large granule solid material, has further ensured the stability in use of equipment, avoids filter screen one and nozzle to block up.
Further, a plurality of round holes are uniformly formed in the transverse plate and the scraping plate, and the diameter of each round hole is the same as the diameter of the filtering hole of the first filter screen. The setting of round hole can reduce the resistance that the scraper blade rotated the in-process and receive, lets the scraper blade rotate the process more smooth and easy, simultaneously, lets the aperture of round hole and filter screen one the same, can ensure to stay the solid material of macroparticle on the scraper blade, and then ensure that the solid material of macroparticle can be guided to the recess by the scraper blade and collect. The diameter of round hole can not be less than the aperture of filter screen one, because if be less than the aperture of filter screen one, scraper blade and diaphragm will be in rotation in-process will originally can be through the interception of filter screen one, along with the increase of granule interception, the load of scraper blade, diaphragm will become big, cause the bending deformation of scraper blade, diaphragm easily, influence the result of use of equipment, secondly, can lead to originally can get into inside the recess through the solid particle of filter screen one, occupy the inner space of recess, make the recess of former design become full by solid particle more fast, the big granule solid can not be stored up and will accumulate on filter screen one after the recess is full, can cause filter screen one to block up more fast, and then the shower nozzle is blocked up. If the diameter of the round hole is larger than that of the first filter screen, large particle solids in the retarder solution cannot be effectively intercepted and guided to be collected in the groove, and the first filter screen is easily blocked.
Preferably, a backflow port is formed in the inner side wall of the rotating ring, the backflow port is located at the tail end of the groove away from the opening, a second filter screen is arranged on the backflow port, and the pore diameter of the second filter screen is identical to that of the first filter screen. After the retarder solution enters the groove from the opening, the retarder solution can flow out from the second filter screen, the flow speed of the retarder solution flowing into the groove is increased by the second filter screen, the solid particles of large particles on the scraping plate can enter the groove to be collected more quickly and smoothly under the drive of the solution, the second filter screen can enable the particles smaller than the second filter screen and the solution to smoothly flow out of the groove, and the large-particle solid materials inside the groove can not flow out of the groove.
Preferably, the vertical rotation in recess top is installed a pivot, the pivot aligns with the filter screen two, be provided with the multiunit in the pivot and be used for driving pivot pivoted blade, every blade is all along the vertical fixed mounting in the pivot of axis direction of pivot, still be provided with in the pivot and be used for stirring the puddler of the inside solid particle of recess, multiunit along the axis direction interval setting of pivot between puddler and the multiunit blade. Along with the rotation of swivel becket, the retarder solution gets into inside the recess from the opening part, and outside the recess flows out from filter screen second, and when passing through the pivot, will strike the epaxial blade of pivot, the blade begins to drive pivot and epaxial puddler and take place to rotate, because the solid material of macroparticle can pile up at the terminal of recess, just filter screen second just, so just filter screen second with pivot, the puddler, the blade is at the pivoted time, also can collide the solid material of macroparticle, and drive each other the collision friction, after long-time soaking, part macroparticle solid material can further smash in collision, the friction, just can be from filter screen second place outside the discharge recess after smashing to be less than filter screen second's filtration pore, the setting of puddler and blade can effectively consume the macroparticle solid material of recess storage, the length of use of recess is improved, ensure that filter screen first does not take place to block up in the production process, simultaneously, the motion of the solid material of macroparticle in the recess can avoid two blocks up, guarantee that solution can get into inside the recess smoothly, and drive the solid material and get into the inside the recess smoothly with smooth effect that uses with the filter screen, further stable material.
Preferably, adopt threaded connection between shell and the conveying pipeline, threaded connection's shell can dismantle the shell from the conveying pipeline fast, can clear up the inside filter screen of shell and rotation ring after dismantling to install it back on the conveying pipeline fast, be convenient for to the maintenance and the maintenance of preparation system, improve the convenience of use of equipment. It should be noted that when shell and conveying pipeline threaded connection, the terminal surface of conveying pipeline does not contact with the swivel becket, has between the terminal surface of conveying pipeline and the terminal surface of swivel becket promptly and dodges the clearance, avoid because the terminal surface extrusion swivel becket's of terminal surface of conveying pipeline during threaded connection terminal surface, the frictional force increase when causing the swivel becket to rotate leads to the retarder solution to flow the time to the actuating effect decline of swivel becket, swivel becket rotates the difficulty, finally leads to the rotation efficiency decline of scraper blade, at this moment, the clearance effect decline of scraper blade to filter screen one, the jam rate of filter screen one is faster.
On the other hand, based on the preparation system, the invention also provides a preparation method of the high-performance concrete retarder, which comprises the following steps:
s1: inputting the prepared retarder aqueous solution into a spray head from a material conveying pipe;
s2: the retarder solid particles which cannot pass through the first filter screen are scraped into the groove from the filter screen by the rotating ring in the spray head under the drive of the retarder pressure;
s3: the retarder solid particles in the groove are scattered under the drive of the rotating shaft and the stirring rod, and are discharged to the outside of the groove again from the second filter screen after the solid particles are smaller than the filter holes of the second filter screen;
s4: the retarder aqueous solution entering the spray head is atomized and sprayed out from the nozzle after being filtered by the first filter screen, and is dried and molded in the drying furnace.
Compared with the prior art, the invention has the beneficial effects that:
1. compared with the existing concrete retarder preparation system, the high-performance concrete retarder preparation system has the advantages that after retarder solution enters the spray nozzle, the retarder solution is filtered before entering the spray nozzle for atomization, when solid materials larger than spray holes of the spray nozzle exist in the retarder solution, the filtering device can block the solid materials, the solid materials are prevented from entering the spray nozzle to cause blockage of the spray nozzle, then the cleaning device can scrape large-particle solid materials accumulated on the filtering device and finally collect the large-particle solid materials into the collecting device, so that the large-particle solid materials are prevented from accumulating on the filtering device to obstruct the flow of the retarder solution, the production stability of the retarder preparation system is improved, the time required for maintaining the spray nozzle of the spray nozzle in the production process is shortened, and the production efficiency is improved. The invention also provides a preparation method capable of guaranteeing the production stability of the retarder according to the retarder preparation system, and further guarantees the efficiency and stability in the retarder production process.
2. According to the high-performance concrete retarder preparation system, the filter screen of the filter device is cleaned by the scraping plate by the cleaning device, the driving device for driving the scraping plate to rotate utilizes the kinetic energy flowing in the process of conveying retarder solution as a power source to drive the scraping plate, no additional power source is needed to drive the scraping plate, the structure is simple, the manufacturing cost is low, and the use stability is high, the maintenance cost is low, the retarder solution is not hindered from being conveyed even if the high-performance concrete retarder preparation system is immersed in the solution for a long time because no electric power is used as the power source.
3. According to the high-performance concrete retarder preparation system, the rotating shaft is arranged in the collecting device, the blades and the stirring rods are arranged on the rotating shaft, the blades are impacted and drive the rotating shaft, the blades and the stirring rods to rotate after retarder solution enters the collecting device, the stirring rods stir large-particle solid materials collected in the collecting device, the large-particle solid materials are stirred by the stirring rods after being soaked for a long time, friction occurs between the large-particle solid materials, part of the large-particle solid materials can be broken, the large-particle solid materials can be discharged from the collecting device to the outside after being broken and pass through the second filter screen, finally the large-particle solid materials are smoothly sprayed out by the spray nozzles, the arrangement of the stirring rods is beneficial to reducing accumulation of the large-particle solid materials in the collecting device, the time required by the solid materials to be piled up is prolonged, the blocking time of the filtering device is helped to be delayed, the spray heads cannot be blocked in the production process, and the production stability is guaranteed.
4. The invention also provides a preparation method of the retarder according to the preparation system of the high-performance concrete retarder, and the preparation method is matched with the preparation system, so that the automation degree of the preparation process can be improved by using the preparation system, the manual production stopping and maintenance time required by nozzle blockage is reduced, and the stability of the preparation efficiency of the concrete retarder in the preparation process is ensured.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the internal structure of the present invention;
FIG. 3 is an exploded view of the spray head of the present invention;
FIG. 4 is an enlarged view of A in FIG. 3 in accordance with the present invention;
FIG. 5 is a perspective view of the mounting structure of the housing and the rotary ring of the present invention;
FIG. 6 is a front view of the mounting structure of the housing and the rotating ring of the present invention;
fig. 7 is a schematic perspective view of a second middle filter according to a second embodiment of the present invention.
In the figure: 1. a drying furnace; 2. a material conveying pipe; 3. a spray head; 301. a housing; 302. a nozzle; 4. a first filter screen; 5. a scraper; 6. a rotating ring; 7. a fan blade; 8. a groove; 9. an opening; 10. a cross plate; 11. a return port; 12. a second filter screen; 13. a round hole; 14. a rotating shaft; 15. a blade; 16. stirring rod.
Detailed Description
The total amount of retarder solution was more than 5 tons per batch of production.
Referring to fig. 1 to 6, the drying furnace 1 adopts a drying mode of blowing hot air from bottom to top, the drying furnace 1 is fixedly installed on the bottom surface, a material conveying pipe 2 for conveying retarder solution is fixedly installed on the top of the drying furnace, the diameter of the material conveying pipe 2 is 100mm, a port vertically extends into the drying furnace 1, a shell 301 of a spray head 3 is fixedly installed at the port of the material conveying pipe 2 through threaded connection, the shell 301 is cylindrical, the shell 301 of the spray head 3 is made of SUS304 stainless steel, seven spray nozzles 302 are fixedly installed at the bottom of the shell 301 of the spray head 3, the size of a spray hole of each spray nozzle 302 is 0.5mm, a filter screen 4 is horizontally and fixedly installed in the shell 301, the diameter of the filter screen 4 is 90mm, the filter screen 4 is also made of SUS304 stainless steel, the filter screen 4 is located between the spray nozzles 302 and the port of the material conveying pipe 2, the filter hole size of the filter screen 4 is also 0.5mm, and the mesh size of the filter screen is 35 mesh. The inside of the shell 301 is also rotatably provided with a rotating ring 6, the thickness of the rotating ring 6 is 10mm, the height of the rotating ring 6 is 50mm, the rotating ring 6 is concentric with the shell 301, the rotating ring 6 is made of PTFE material, six fan blades 7 are arranged in the rotating ring 6, six circumferences are uniformly and fixedly arranged on the inner wall of the rotating ring 6, the rotating ring 6 and the six fan blades 7 are integrally formed and manufactured, the rotating ring 6 installed behind the shell 301 rotates clockwise when being impacted by fluid from top to bottom, the rotating ring 6 is not contacted with the end face of the conveying pipe 2 when the rotating ring 6 is arranged in the shell 301, a scraping plate 5 is horizontally and fixedly arranged on the rotating ring 6, the bottom of the scraping plate 5 is tightly attached to the surface of the first filter screen 4, the scraping plate 5 is 10mm in height and 2mm in thickness, the length of the scraping plate 5 is the same as the radius of the first filter screen 4, the same scraping plate 5 is also made of PTFE material, the scraper 5 is horizontally glued with a transverse plate 10, the transverse plate 10 faces the rotating direction of the rotating ring 6, the transverse plate 10 is rectangular, the length, the width and the thickness of the transverse plate 10 are the same as those of the scraper 5, the transverse plate 10 and the scraper 5 are both glued with the rotating ring 6, the transverse plate 10 and the scraper 5 are uniformly provided with a plurality of round holes 13, the aperture of each round hole 13 is the same as that of the filter screen I4, the bottom of the rotating ring 6 is provided with a C-shaped groove 8 along the rotating ring 6, the width of the groove 8 is 8mm, the height is 30mm, the groove 8 is anticlockwise provided from the position 2mm in front of the rotating direction of the scraper 5, the total length of the groove 8 is 3/4 of the circumference of the rotating ring 6, the inner side wall of the rotating ring 6 which is 2mm in front of the rotating direction of the scraper 5 is provided with an opening 9 with the length of 10mm and the width of 10mm, the opening 9 is communicated with the inner part of the shell 301 and the groove 8, the inner side wall of the rotating ring 6 at the tail end of the groove 8 is provided with a backflow port 11, the length and the width of the backflow port 11 are the same as those of the opening 9, a second filter screen 12 with the length of 10mm and the height of 30mm is vertically fixed at the backflow port 11, the second filter screen 12 is communicated with the inside of the groove 8 and the shell 301, the second filter screen 12 is made of the same material as the first filter screen 4, the size of a filtering hole of the second filter screen 12 is 0.5mm, and the mesh number is 35. The inside vertical rotation of recess 8 is installed a pivot 14, and pivot 14 is just to filter screen two 12, and fixed mounting has two sets of blades 15 on the pivot 14, and every set of blade 15 is four, and two sets of blades 15 are set up on pivot 14 along the axis direction equipartition of pivot 14, still fixed mounting has three sets of puddler 16 on the pivot 14, installs along the axis interval of puddler 16 between three sets of puddler 16 and the two sets of blades 15.
The specific working procedure is as follows:
the prepared retarder solution is conveyed from the conveying pipe 2 towards the spray head 3 and enters the inside of the shell 301 of the spray head 3, after entering the spray head 3, the retarder solution firstly passes through the screening of the first filter screen 4, the first filter screen 4 intercepts undissolved solid materials larger than the filter holes of the first filter screen 4 on the surface of the first filter screen 4, and the large-particle solid materials larger than the filter holes of the first filter screen 4 are prevented from entering the spray holes of the spray nozzle 302 to block the spray holes. The large-particle solid material is left on the surface of the first filter screen 4 under the interception of the first filter screen 4, the retarder solution meeting the injection standard can pass through the first filter screen 4, finally, atomized and sprayed out from the spray hole of the nozzle 302 and enter the drying furnace, and the inside of the drying furnace dries the atomized retarder by upward blowing hot air, so that a dry powdery retarder finished product is finally obtained.
At the same time, under the scouring of retarder flowing towards the nozzle 302 in the shell 301, six fan blades 7 on the rotating ring 6 drive the rotating ring 6 to rotate clockwise, the rotating ring 6 which rotates clockwise drives the scraping plate 5 fixedly arranged on the rotating ring 6 to rotate, the scraping plate 5 is tightly attached to the surface of the first filter screen 4, large-particle solid materials which cannot pass through the first filter screen 4 on the surface of the first filter screen 4 are gathered at the scraping plate 5 in the rotating process, the large-particle solid materials enter the groove 8 from the opening 9 along with the rotation of the scraping plate 5 and are limited by the transverse plate 10 under the guiding action of the scraping plate 5, and finally flow to the second filter screen 12 to gather along with the flow of retarder solution, the retarder solution also impacts the blades 15 on the rotating shaft 14 in the flowing process of the groove 8, the blades 15 rotate after being stressed, the rotating shaft 14 and the stirring rod 16 rotate, the rotating blades 15 and the stirring rod 16 can drive the large-particle solid materials inside the groove 8 and the large-particle solid materials adhered to the second filter screen 12 in the rotating process, the large-particle solid materials can enter the groove 8 from the opening 9 to the groove 8 along with the rotation of the scraping plate 5, the solid materials can be extruded from the second filter screen 12 to the solid materials, the solid materials can be dried and the solid materials can flow from the groove 8 to the inner part of the groove 12, the fine-particle particles can be crushed and the fine particles can be dried, the fine particles can be dried and the fine particles can be sprayed from the inside the filter screen 12 can be dried to the inside the filter screen and the filter particles can and the fine particles can be dried.
After the use is finished, the shell 301 is rotated and removed from the conveying pipe 2, the rotating ring 6 is taken out along the axis direction of the shell 301, the first filter screen 4 is also taken out along the axis direction of the shell 301, the filter screen 4 is cleaned by a high-pressure water gun or immersed in clean water to be cleaned by a brush, the first filter screen 4 is firstly arranged back into the shell 301 along the axis of the shell 301 after the cleaning is finished, finally the rotating ring 6 is arranged into the shell 301 along the axis direction of the shell 301, and the scraping plate 5 is ensured to be tightly adhered to the surface of the first filter screen 4.
For the installation between the scraping plate 5 and the first filter screen 4 in the present invention, it should be noted that, although the rotation ring 6 is not provided with a limiting device to ensure that the scraping plate 5 contacts with the surface of the first filter screen, due to the vertical installation of the rotation ring 6, the filter screen and the housing 301, the scraping plate 5 is pressed by the downward impact force of the retarder solution and the gravity of the rotation ring 6 to be tightly attached to the first filter screen 4 under the gravity of the rotation ring 6 and the impact of the retarder on the fan blades 7 on the rotation ring 6 when the retarder is conveyed downwards. Even if installed horizontally, the impact of the solution during the delivery can ensure that the scraping plate 5 is in close contact with the first filter screen 4.
So repeatedly, can be in the in-process of spraying into the drying furnace with retarder solution automatic screen out to the inside solid material that does not dissolve of retarder, collect, avoid large granule's solid material to get into nozzle 302 department and block up nozzle 302 of shower nozzle 3, guarantee the stability of the process that the retarder was dried and is made the finished product, reduce because of the required maintenance time of shower nozzle 3 jam, improve the continuity of production and the efficiency of production.
Referring to fig. 7, the inside of the groove 8 may not be provided with the rotating shaft 14, the stirring rod 16 and the blades 15, but the reflux port 11 on the rotating ring 6 starts from the tail end of the groove 8 to cover 1/2 of the whole groove 8, and the second filter screen 12 also covers 1/2 of the whole groove 8. In the production process of small batches with the production capacity of less than 5 tons at a time, the space inside the groove 8 is not fully piled up after the production is finished, the rotating shaft 14, the fan blades 7 and the stirring rod 16 are not required to be used for crushing solid particles with large particles to make room for the subsequent production, the second filter screen 12 covers 1/2 of the whole groove 8, so as to ensure the circulation of the solution inside the groove 8, prevent the second filter screen 12 from being too small to be blocked, prevent the solution from difficultly flowing through the groove 8, prevent the large-particle solid materials accumulated on the scraping plate 5 from difficultly entering the groove 8 from the opening 9 to be collected, and ensure that the solid materials with large particles can not block the first filter screen 4 in the production process.
The above embodiments are merely illustrative of many embodiments of the present invention and many variations thereof are possible without departing from the principles of the present invention, which would be apparent to one skilled in the art without undue burden.
Claims (9)
1. A high performance concrete retarder preparation system comprising:
the drying device comprises a drying furnace (1), wherein a conveying pipe (2) for conveying retarder solution is arranged above the drying furnace (1), a spray head (3) for atomizing the retarder solution is arranged on a port of the conveying pipe (2), and the spray head (3) is positioned in the drying furnace (1);
the method is characterized in that: the spray head (3) comprises a shell (301), the shell (301) is fixedly arranged on a port of the conveying pipe (2), one or more nozzles (302) are arranged on the shell (301), a round filter screen I (4) for filtering large-particle solids is further arranged inside the shell (301), each aperture of the filter screen I (4) is smaller than or equal to that of a spray hole on the nozzle (302), a scraping plate (5) is arranged on the surface of the filter screen I (4) in a contact mode, a driving device for driving the scraping plate (5) to rotate is arranged on the shell (301), a collecting device for collecting large-particle solids is further arranged inside the shell (301), and when retarder solution is conveyed by the conveying pipe (2) to enter the spray head (3), the kinetic energy driving device of the retarder solution drives the scraping plate (5) to rotate so as to synchronously clean the filter screen I (4).
2. A high performance concrete retarder preparation system according to claim 1, wherein: the driving device comprises a rotating ring (6) which is rotatably arranged in a shell (301), a plurality of fan blades (7) are fixedly arranged on the inner wall of the rotating ring (6), the length of the scraping plate (5) is identical to the radius of the first filter screen (4), one end of the scraping plate (5) is vertically and fixedly arranged on the inner wall of the rotating ring (6), the other end of the scraping plate is positioned at the center of the first filter screen (4), and the fan blades (7) drive the rotating ring (6) to rotate with the scraping plate (5) when the retarder solution entering the spray head (3) is washed.
3. A high performance concrete retarder preparation system according to claim 2, wherein: the collecting device comprises a groove (8) formed in the bottom of the rotating ring (6), the groove (8) is matched with the first filter screen (4) to form a space for storing large-particle solids which cannot pass through the first filter screen (4), an opening (9) for enabling large-particle solids to enter the groove (8) is formed in the inner side wall of the rotating ring (6), and the opening (9) is located in the front of the scraper (5) in the rotating direction of the rotating ring (6) by 0-2 mm.
4. A high performance concrete retarder preparation system according to claim 3, wherein: the top of the scraper (5) is horizontally and fixedly provided with a transverse plate (10), and the transverse plate (10) is matched with the scraper (5) and the first filter screen (4) to form a U-shaped notch which faces the rotating direction of the rotating ring (6).
5. A high performance concrete retarder preparation system according to claim 3, wherein: the inner side wall of the rotating ring (6) is provided with a backflow port (11), the backflow port (11) is located at the tail end of the groove (8) away from the opening (9), the backflow port (11) is provided with a second filter screen (12) for preventing large-particle solids from leaving the groove (8) under the drive of fluid, and the aperture of a filtering hole of the second filter screen (12) is identical to that of the first filter screen (4).
6. The high performance concrete retarder manufacturing system of claim 4, wherein: the cross plate (10) and the scraping plate (5) are uniformly provided with a plurality of round holes (13), and the diameter of each round hole (13) is the same as the diameter of the filtering hole of the first filter screen (4).
7. The high performance concrete retarder manufacturing system of claim 6, wherein: the vertical rotation in recess (8) top is installed one pivot (14), pivot (14) are aligned with filter screen two (12), be provided with multiunit in pivot (14) and be used for driving pivot (14) pivoted blade (15), still be provided with puddler (16) that are used for stirring the inside solid particle of recess (8) in pivot (14), multiunit between puddler (16) and multiunit blade (15) along the axis direction interval setting of pivot (14).
8. A high performance concrete retarder preparation system according to claim 2, wherein: the shell (301) is in threaded connection with the conveying pipe (2), and when the shell (301) is in threaded connection with the conveying pipe (2), an avoidance gap is formed between the end face of the conveying pipe (2) and the rotating ring (6).
9. A method for preparing a high-performance concrete retarder, which is suitable for a high-performance concrete retarder preparation system as claimed in any one of claims 1 to 8, and comprises the following steps:
s1: the prepared retarder aqueous solution is input into a spray head (3) from a feed conveying pipe (2);
s2: under the drive of retarder pressure, a rotating ring (6) in the spray head (3) drives a scraping plate (5) to start rotating, and solid retarder particles which cannot pass through a first filter screen (4) are scraped into a groove (8) from the filter screen;
s3: the retarder solid particles in the groove (8) are scattered under the drive of the rotating shaft (14) and the stirring rod (16), and are discharged to the outside of the groove (8) from the second filter screen (12) after being smaller than the filter holes of the second filter screen (12);
s4: the retarder aqueous solution entering the spray head (3) is filtered by a first filter screen (4), atomized and sprayed out from a nozzle (302), and dried and molded in a drying furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310901154.7A CN116870501A (en) | 2023-07-21 | 2023-07-21 | High-performance concrete retarder preparation system and preparation method |
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| CN202310901154.7A CN116870501A (en) | 2023-07-21 | 2023-07-21 | High-performance concrete retarder preparation system and preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117160332A (en) * | 2023-11-03 | 2023-12-05 | 亿华高新材料(南通)有限公司 | Automatic batching system for automobile leather |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117160332A (en) * | 2023-11-03 | 2023-12-05 | 亿华高新材料(南通)有限公司 | Automatic batching system for automobile leather |
| CN117160332B (en) * | 2023-11-03 | 2024-03-05 | 亿华高新材料(南通)有限公司 | Automatic batching system for automobile leather |
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