CN107915434B - Method for preparing concrete - Google Patents
Method for preparing concrete Download PDFInfo
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- CN107915434B CN107915434B CN201711186643.XA CN201711186643A CN107915434B CN 107915434 B CN107915434 B CN 107915434B CN 201711186643 A CN201711186643 A CN 201711186643A CN 107915434 B CN107915434 B CN 107915434B
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- stirring
- sludge
- parts
- aeration
- materials
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000004567 concrete Substances 0.000 title claims abstract description 32
- 238000003756 stirring Methods 0.000 claims abstract description 148
- 239000010802 sludge Substances 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 54
- 239000002699 waste material Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000004568 cement Substances 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 14
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 13
- 239000010883 coal ash Substances 0.000 claims abstract description 9
- 238000005273 aeration Methods 0.000 claims description 37
- 238000003780 insertion Methods 0.000 claims description 19
- 230000037431 insertion Effects 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000011449 brick Substances 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 14
- 238000007790 scraping Methods 0.000 claims description 13
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 10
- 239000002244 precipitate Substances 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 9
- 229920001155 polypropylene Polymers 0.000 claims description 9
- 239000003365 glass fiber Substances 0.000 claims description 8
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 8
- 239000004800 polyvinyl chloride Substances 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 229920002748 Basalt fiber Polymers 0.000 claims description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- 238000004062 sedimentation Methods 0.000 claims description 6
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 5
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 238000003892 spreading Methods 0.000 claims description 5
- 230000007480 spreading Effects 0.000 claims description 5
- 238000004332 deodorization Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 4
- 239000004575 stone Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 10
- 238000007605 air drying Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 230000001877 deodorizing effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000012257 stirred material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
- B28C5/006—Methods for mixing involving mechanical aspects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
- B28C5/20—Mixing in containers to which motion is imparted to effect the mixing rotating about a horizontal or substantially horizontal axis during mixing, e.g. without independent stirrers
- B28C5/2045—Parts or components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
- B28C5/20—Mixing in containers to which motion is imparted to effect the mixing rotating about a horizontal or substantially horizontal axis during mixing, e.g. without independent stirrers
- B28C5/24—Mixing in containers to which motion is imparted to effect the mixing rotating about a horizontal or substantially horizontal axis during mixing, e.g. without independent stirrers with driven stirrers
Abstract
The invention discloses a method for preparing concrete, which comprises the following steps: (1) raw material acquisition: obtaining sludge, construction waste, coal ash and cement and putting into a stirring device; (2) stirring: adding water into the stirring equipment, starting the stirring equipment, and ventilating the stirring shaft in the stirring process so as to generate outward sprayed airflow on the stirring shaft and impact materials in the stirring equipment; (3) performance enhancement: adding reinforcing fibers into the material obtained by stirring in the step (2) and continuously stirring to obtain a finished product. In the invention, the sludge, the construction waste and the coal ash are used as raw materials, so that the waste of non-renewable resources such as sand stones and sand is effectively reduced; the in-process (mixing) shaft of stirring can outwards jet air, prevents effectively that the condition of caking from appearing in the material, and the mixture between the material is more even to the preparation and concrete performance are better.
Description
Technical Field
The invention belongs to the technical field of concrete manufacturing, and particularly relates to a method for preparing concrete.
Background
Concrete is one of the most important civil engineering materials of the present generation. The concrete can be obtained by mixing and stirring sand, broken stone and cement during manufacturing. However, as sand and gravel belong to non-renewable resources in natural ecology, concrete is increasingly used in buildings, and the non-renewable resources are gradually reduced, so that the ecological environment is irreversibly damaged. The concrete is usually stirred by a stirrer during preparation, but the stirring effect of the existing stirring equipment is poor, and the material is often caked in the stirring process, so that the later use effect of the concrete is influenced; and a large amount of water resources are needed when the concrete is prepared.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the method for preparing the concrete, which has the advantages of difficult caking of the concrete and high resource utilization rate.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for preparing concrete comprising the steps of:
(1) raw material acquisition: obtaining sludge, construction waste, coal ash and cement and putting into a stirring device;
(2) stirring: adding water into the stirring equipment, starting the stirring equipment, and ventilating the stirring shaft in the stirring process so as to generate outward sprayed airflow on the stirring shaft and impact materials in the stirring equipment;
(1) performance enhancement: adding reinforcing fibers into the material obtained by stirring in the step (2) and continuously stirring; and then adding a water reducing agent into the materials, and continuously stirring until the materials are uniformly mixed to obtain a finished product.
The invention adopts the sludge, the construction waste and the coal ash as the raw materials, effectively reduces the waste of non-renewable resources such as sand stone, sand and the like, effectively solves the problem of treatment of the sludge, the construction waste and the coal ash, saves the manpower and material resources required by the treatment and avoids the pollution to the environment; the stirring shaft can spray air outwards in the stirring process, so that the materials are scattered, the caking condition of the materials is effectively prevented, the materials are mixed more uniformly, and the prepared concrete has better performance; the water reducing agent has a dispersing effect on cement particles, effectively improves the fluidity of concrete mixtures, reduces the unit cement consumption and saves cement; meanwhile, the unit water consumption can be reduced, and the water resource is saved.
Further, the water reducing agent is composed of the following materials in parts by weight: 3-5 parts of naphthalene sulfonic acid formaldehyde, 3-4 parts of sodium hydroxide, 2-3 parts of ammonium persulfate and 1-2 parts of basalt fiber; the basalt fiber can form a compact and disorderly distributed net-shaped supporting structure system in the mortar, monofilaments smaller than polypropylene fibers are uniformly dispersed in the cement slurry, and a large amount of hydration products are attached to the fibers and have a better combination form with the mortar, so that the generation and expansion of microcracks can be well prevented, and the crack resistance and the strength of the concrete can be effectively improved.
Further, the sludge is a precipitate in a primary sedimentation tank for sewage treatment and is obtained by scraping the precipitate by a sludge scraping device; effectively solves the problem of the untreated treatment of the sludge in the primary sedimentation tank and prevents the direct investment of the sludge into the natural environment from influencing the natural ecology.
Further, before the sludge is put into the stirring equipment, the sludge needs to be subjected to deodorization treatment: adding calcium oxide into the sludge according to the ratio of 2:1, uniformly mixing, and standing for 20-30 min; after standing, spreading and airing the sludge outdoors by using a rake until the sludge is naturally aired; then putting the air-dried sludge into a crusher and sieving the sludge by a sieve of 80 meshes to obtain a sludge raw material; the peculiar smell in the sludge is effectively removed by adding calcium oxide and airing and air drying, so that the peculiar smell in the prepared concrete is prevented; carry out the breakage to mud again after air-drying, prevent that the monoblock of mud raw materials from dropping into agitated vessel in, avoid appearing the condition of material caking.
Further, the building waste is bricks, and the bricks are crushed by a crusher and then pass through a 120-mesh sieve to obtain a building waste raw material; by using the construction waste as the raw material, the use of sandstone raw materials is effectively reduced, and the resource utilization rate is improved; the construction waste plays a role, so that the occupation of the construction waste on the land and the occupation on the soil are effectively reduced; and the brick has lower strength, is easy to be crushed to a proper size and is fully mixed with cement, so that the stirred materials are uniformly mixed.
Further, the reinforcing fiber is composed of the following materials in parts by weight: 8-10 parts of glass fiber, 3-5 parts of polypropylene fiber and 3-5 parts of polyvinyl chloride resin; the fiber composite material is formed by polymerizing a plurality of fibers, has the characteristics of a plurality of fibers and high-strength toughness compared with single fiber, and effectively improves the tensile strength, bending resistance and shearing strength of the prepared concrete.
Furthermore, the stirring equipment comprises a frame, a shell arranged on the frame, a stirring shaft rotatably arranged on the shell, a spiral stirring paddle arranged on the stirring shaft, and a driving component for driving the shell to rotate.
Further, an aeration component and a gas supply component for supplying gas to the aeration component are arranged on the stirring shaft; through last setting of aeration part, the (mixing) shaft can be at the in-process of stirring outwards jet-propelled to can break up the material that the caking appears among the stirring process, make the mixture of material more even, the condition of caking can not appear, guarantee the concrete quality that makes at last, the material mixing degree of consistency is high.
Furthermore, the aeration component comprises a first aeration channel arranged on the stirring shaft, a second aeration channel arranged in the stirring paddle and a plurality of aeration holes arranged on the outer surface of the interval stirring paddle; gas enters into (mixing) shaft and stirring rake through aeration channel in, and the outside blowout of rethread aeration hole because the aperture in hole generally sets up less to gaseous jet power when outside blowout is generally great, changes the material of caking and breaks up, realizes good stirring effect.
Furthermore, the gas inlet component comprises a connecting cavity which is arranged on the stirring shaft and communicated with the first aeration channel, a connecting seat matched with the connecting cavity, a gas inlet pipe fitting fixedly arranged in the connecting seat and a gas generator connected with the gas inlet pipe fitting; the connecting seat is in rotatable fit with the connecting cavity; the connecting seat is in rotatable fit with the connecting cavity, so that the connecting seat cannot be influenced by the rotation of the shell and the stirring shaft, the air inlet pipe fitting cannot be wound along with the rotation of the stirring shaft, and the fault is not easy to occur; and through dividing the part that admits air into connecting seat and inlet pipe spare, guarantee that wearing and tearing only take place between connecting seat and (mixing) shaft, when the connecting seat wearing and tearing, can change the connecting seat alone, need not to change whole part that admits air, the holistic long service life of equipment, cost of maintenance is low.
Furthermore, a sealing structure matched with the air inlet pipe fitting is arranged on the insertion part, and the sealing component comprises a cage part arranged on the insertion part and a plurality of rubber pieces arranged in the cage part; the cage part is formed by local outward expansion of the insertion part, and when external extrusion force is received, the cage part can still be restored to the state that the outer diameter is the same as that of the insertion part, so that when the insertion part is inserted into the connecting cavity, the cage part can be restored to the state that the cage part is not expanded, a rubber part is compressed, good sealing is achieved between the air inlet pipe fitting and the insertion part, and leakage cannot occur even if the air inlet pipe fitting and the insertion part are used for a long time; and the cage part also has outward restoring force, so that the outer surface of the cage part is always in compression fit with the inner wall of the connecting cavity, and the sealing effect is good.
Further, the molding method of the cage part comprises the following steps: a, slotting: a plurality of gaps are uniformly arranged on part of the surface of the insertion part at intervals; b, punch forming: stamping the connecting seat through a press to enable the position, provided with the gap, on the inserting part to expand outwards to form the cage part; the cage part is provided with a plurality of strip-shaped pieces, an open slot is formed between every two adjacent strip-shaped pieces, and the rubber piece is plugged into the cage part through the open slot; the molding mode is adopted for molding, the operation is simple, and the molding efficiency is high; through slotting and punching operation, guarantee cage portion direct forming reachs on grafting portion, easy and simple to handle, and when having guaranteed that later stage grafting portion links to each other with being connected the chamber, good sealed between the two.
Further, the air inlet pipe fitting is a rubber pipe, and a support piece is arranged in the rubber pipe; the rubber pipe enables the air inlet pipe fitting to be tightly attached to the rubber part, and leakage caused by gaps is avoided; the supporting piece is arranged, so that the air inlet pipe fitting can be effectively supported, the condition that the air inlet pipe fitting is not deformed in the insertion part is ensured, and good sealing between the air inlet pipe fitting and the insertion part is further ensured.
Furthermore, the outer surface of the stirring paddle is coated with an elastic layer, and a one-way air outlet is arranged on the elastic layer corresponding to the aeration hole; the elastic layer has certain restoring force to when gaseous outside blowout, one-way gas outlet will be opened, outwards give vent to anger, but when stopping jet-propelled, one-way gas outlet will be automatic closed under the effect of the restoring force of elastic layer, guarantee that the concrete can not get into to the stirring rake in through the gas outlet.
In summary, the invention has the following advantages: the cement concrete is prepared by using materials such as silt, coal slag, construction waste and the like, so that the waste of non-renewable resources is reduced, and the condition of irreversible shortage of the resources is prevented; the stirring shaft can spray air outwards in the stirring process, so that materials which are agglomerated in the stirring process can be scattered, the materials are mixed more uniformly, the agglomeration is avoided, and the finally prepared concrete is high in quality and high in material mixing uniformity; the water reducing agent has a dispersing effect on cement particles, effectively improves the fluidity of concrete mixtures, reduces the unit cement consumption and saves cement; meanwhile, the unit water consumption can be reduced, and the water resource is saved.
Drawings
FIG. 1 is a schematic view of the structure of a stirring apparatus of the present invention.
FIG. 2 is a partial cross-sectional view of a stirring device of the present invention.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic diagram of the first embodiment at B in fig. 2.
Fig. 5 is a schematic structural view of the connecting socket in the manner of fig. 4.
Fig. 6 is a schematic view of a second embodiment at B in fig. 2.
Fig. 7 is a schematic structural view of the connecting socket in the manner of fig. 6.
Fig. 8 is a schematic view of the housing and the driving member of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
Example 1
A method for preparing concrete comprising the steps of: (1) raw material acquisition: obtaining sludge, construction waste, coal ash and cement, and mixing the raw materials in a ratio of 1: 1.5: 1.2:2.5 putting into stirring equipment; specifically, the sludge is a precipitate in a primary sedimentation tank for sewage treatment and is obtained by scraping the precipitate by a sludge scraping device, and the sludge scraping device can be realized by the prior art, so that the detailed description is omitted; secondly, before the sludge is put into the stirring equipment, deodorizing the sludge, and specifically operating as follows: adding calcium oxide into the sludge according to the ratio of 2:1, stirring and mixing uniformly by a rake, and standing for 20 min; after standing, finding a cement ground outdoors, spreading and airing the sludge on the cement ground by using a rake, and then naturally airing and air-drying until the sludge is naturally air-dried and hardened; then putting the air-dried sludge into a crusher for crushing, and after crushing, sieving by a 80-mesh sieve to obtain a granular sludge raw material; the building waste is bricks, and the processing steps of the bricks are that waste bricks obtained on the site are crushed by a crusher and filtered by a 120-mesh sieve to obtain granular building waste raw materials;
as shown in fig. 1-8, the stirring apparatus includes a frame 1, a housing 2 disposed on the frame, a stirring shaft 3 rotatably disposed on the housing, a helical stirring paddle 4 disposed on the stirring shaft, and a driving component 5 for driving the housing to rotate; the driving part 5 comprises a motor 51 fixedly arranged on the frame, a rotating wheel 52 connected with an output shaft of the motor, a belt pulley 53 rotationally connected with the rotating wheel, a gear 54 coaxially arranged with the belt pulley and a gear ring 55 fixedly arranged on the outer surface of the shell; the belt pulley is in transmission connection with the rotating wheel through a belt, and the gear is meshed with the gear ring, so that the gear can drive the shell to rotate when rotating; further, be equipped with in the frame 1 with casing 2 matched with helps moving part 6, should help moving part 6 and locate for the symmetry two sets of gyro wheels 61 in the frame, two sets of gyro wheels include two gyro wheels respectively to 4 gyro wheels will support the casing, and the casing when taking place to rotate, the gyro wheel also can take place to rotate, thereby effectively reduces the frictional force that the casing received at the rotation in-process, makes the rotation of casing more smooth and easy.
The stirring shaft 3 is provided with an aeration component 7 and a gas supply component 8 for supplying gas to the aeration component; specifically, the aeration component 7 comprises a first aeration channel 71, a second aeration channel 72 and a plurality of aeration holes 73, wherein the first aeration channel 71 is arranged on the stirring shaft, and the second aeration channel 72 is arranged in the stirring paddle and communicated with the first aeration channel 71; specifically, the stirring shaft and the stirring paddle are respectively arranged in a hollow manner to form a first aeration channel 71 and a second aeration channel 72; the aeration holes 73 are uniformly arranged on the outer surface of the stirring paddle at intervals, and the aeration holes 73 are communicated with the second aeration channel 72; preferably, the outer surface of the stirring paddle 4 is coated with an elastic layer 41, the elastic layer is made of rubber, and the elastic layer is fixed on the outer surface of the stirring paddle 4 through bonding; furthermore, a plurality of strip-shaped grooves are uniformly distributed on the outer surface of the stirring paddle 4 at intervals, so that more glue can be contained in the grooves during bonding, and the connection between the elastic layer and the stirring paddle 4 is firmer; in order to prevent the materials from entering the stirring paddle through the aeration openings, one-way air outlets 411 are arranged on the elastic layer 41 at positions corresponding to the aeration holes, and specifically, the one-way air outlets 411 are straight gaps arranged on the elastic layer 41 and are obtained by cutting the elastic layer 41 through a cutter.
The gas inlet component 8 comprises a cylindrical connecting cavity 81, a connecting seat 82, a gas inlet pipe fitting 83 and a gas generator, wherein the cylindrical connecting cavity 81 is arranged on the stirring shaft and is communicated with the first aeration channel; the connecting seat 82 is in inserting fit with the connecting cavity, and the connecting seat 82 can rotate relative to the connecting cavity 81; the air inlet pipe 83 is fixedly arranged in the connecting seat, preferably, the air inlet pipe 83 is a rubber pipe made of rubber, a support part 831 is arranged in the rubber pipe, the support part 831 is a hollow pipe body made of metal or plastic, the diameter of the support part 831 is equal to the inner diameter of the air inlet pipe 83, and therefore the air inlet pipe 83 can be supported and prevented from deforming; the gas generator is a blower and is connected with the gas inlet pipe fitting; the gas generated by the gas generator is conveyed into the first channel through the gas inlet pipe fitting, conveyed to the aeration holes through the second channel and sprayed out, so that the materials being stirred are impacted.
In order to prevent air leakage, a leakage-proof sealing structure is arranged between the air supply component 8 and the stirring shaft 3; specifically, the leakage-proof sealing structure comprises a sealing layer 91, a cylindrical plug-in part 92 and a sealing element 93, wherein the sealing layer 91 is made of rubber and is bonded on the inner wall of the connecting cavity, the plug-in part 92 is formed by directly extending the end part of the connecting seat outwards, and the plug-in part 92 can be in plug-in fit with the connecting cavity and rotates relative to the connecting cavity; the sealing member 93 is disposed on the insertion portion, and in this embodiment, the sealing member 93 is a plurality of circles of ribs 931 disposed on an outer surface of the insertion portion at uniform intervals; of course, in other embodiments, the sealing member 93 may also adopt other structures, as shown in the figure, the sealing member 93 includes an annular groove 932, a flexible layer 933 and a sleeve 934, the annular groove 932 is disposed on the outer surface of the insertion portion, the flexible layer 933 is a rubber layer, and the flexible layer 933 is adhered to the bottom wall of the annular groove 932; the external member 934 is annular metalwork, and this external member 934 is rotatable to be arranged in annular groove 932, and preferred, the thickness of external member 934 should slightly be greater than annular groove 932's height, equals the internal diameter of connecting the chamber to when grafting portion inserts to connecting the intracavity, can realize interference fit between external member and the connecting chamber, sealed respond well.
Furthermore, a sealing structure matched with the air inlet pipe fitting is arranged on the insertion part 92, so that the condition of air leakage at the joint of the air inlet pipe fitting and the air inlet pipe fitting is effectively prevented; specifically, the sealing component comprises a cage part 921 arranged on the insertion part and a plurality of rubber pieces 922 arranged in the cage part; the cage part 921 is formed by one section of the insertion part expanding outwards directly, so that when the insertion part is inserted into the connecting cavity; the cage part can be restored to the state before expansion, so that the cage part is completely pressed on the rubber piece; specifically, the method for forming the cage 921 includes: a, slotting: a plurality of gaps are uniformly arranged on the outer surface of the middle lower part of the insertion part 92 at intervals; b, punch forming: stamping the connecting seat by a press to expand the position of the gap on the plug-in part 92 outwards to form a cage part of the lantern-shaped structure; have a plurality of bars 923 on the cage portion after the shaping, form open slot 924 between the adjacent bar, rubber 922 by open slot 924 fills in extremely in the cage portion.
(2) Stirring: adding water into the stirring equipment according to the ratio of the water to the cement of 1:0.8, starting the stirring equipment, and stirring and mixing the materials and the water in the stirring equipment; ventilating the stirring shaft in the stirring process to enable the stirring shaft to generate an outward sprayed airflow, so that materials in stirring equipment are impacted in the stirring process to achieve a good stirring and mixing effect, and performing the next operation after stirring for 30 min; (3) performance enhancement: adding reinforcing fibers into the material obtained by stirring in the step (2); specifically, the reinforcing fiber is composed of the following materials in parts by weight: 8 parts of glass fiber, 3 parts of polypropylene fiber and 3 parts of polyvinyl chloride resin; the preparation method comprises the following steps: putting the glass fiber, the polypropylene fiber and the polyvinyl chloride resin into a boiler, heating the boiler to 140 ℃, and reacting for 10min to finally prepare the reinforcing fiber; after the stirring equipment continues to stir for 1-2 hours, adding the water reducing agent into the materials, and then continuing to stir until the materials are uniformly mixed to obtain a finished product; specifically, the water reducing agent is composed of the following materials in parts by weight: 3 parts of naphthalene sulfonic acid formaldehyde, 3 parts of sodium hydroxide, 2 parts of ammonium persulfate and 1 part of basalt fiber.
Example 2
A method for preparing concrete comprising the steps of: (1) raw material acquisition: obtaining sludge, construction waste, coal ash and cement, and mixing the raw materials in a ratio of 1: 1.3: 1.1:2.3, and the structure of the stirring equipment is the same as that in the embodiment 1, so that the details are not repeated; specifically, the sludge is a precipitate in a primary sedimentation tank for sewage treatment and is obtained by scraping the precipitate by a sludge scraping device, and the sludge scraping device can be realized by the prior art, so that the detailed description is omitted; secondly, before the sludge is put into the stirring equipment, deodorizing the sludge, and specifically operating as follows: adding calcium oxide into the sludge according to the ratio of 2:1, uniformly stirring and mixing by a rake, and standing for 25 min; after standing, finding a cement ground outdoors, spreading and airing the sludge on the cement ground by using a rake, and then naturally airing and air-drying until the sludge is naturally air-dried and hardened; then putting the air-dried sludge into a crusher for crushing, and after crushing, sieving by a 80-mesh sieve to obtain a granular sludge raw material; the building waste is bricks, and the processing steps of the bricks are that waste bricks obtained on the site are crushed by a crusher and filtered by a 120-mesh sieve to obtain granular building waste raw materials;
(2) stirring: adding water into the stirring equipment according to the ratio of the water to the cement of 1.1:0.8, starting the stirring equipment, and stirring and mixing the materials and the water in the stirring equipment; ventilating the stirring shaft in the stirring process to enable the stirring shaft to generate an outward sprayed airflow, so that materials in stirring equipment are impacted in the stirring process to achieve a good stirring and mixing effect, and performing the next operation after stirring for 30 min; (3) performance enhancement: adding reinforcing fibers into the material obtained by stirring in the step (2); specifically, the reinforcing fiber is composed of the following materials in parts by weight: 8 parts of glass fiber, 5 parts of polypropylene fiber and 3 parts of polyvinyl chloride resin; the preparation method comprises the following steps: putting the glass fiber, the polypropylene fiber and the polyvinyl chloride resin into a boiler, heating the boiler to 140 ℃, and reacting for 10min to finally prepare the reinforcing fiber; after the stirring equipment continues to stir for 1-2 hours, adding the water reducing agent into the materials, and then continuing to stir until the materials are uniformly mixed to obtain a finished product; specifically, the water reducing agent is composed of the following materials in parts by weight: 3 parts of naphthalene sulfonic acid formaldehyde, 4 parts of sodium hydroxide, 2 parts of ammonium persulfate and 1 part of basalt fiber.
Example 3
A method for preparing concrete comprising the steps of: (1) raw material acquisition: obtaining sludge, construction waste, coal ash and cement, and mixing the raw materials in a ratio of 1: 1.5: 1.2:2.5, and the structure of the stirring equipment is the same as that in the embodiment 1, so the description is omitted; specifically, the sludge is a precipitate in a primary sedimentation tank for sewage treatment and is obtained by scraping the precipitate by a sludge scraping device, and the sludge scraping device can be realized by the prior art, so that the detailed description is omitted; secondly, before the sludge is put into the stirring equipment, deodorizing the sludge, and specifically operating as follows: adding calcium oxide into the sludge according to the ratio of 2:1, uniformly stirring and mixing by a rake, and standing for 30 min; after standing, finding a cement ground outdoors, spreading and airing the sludge on the cement ground by using a rake, and then naturally airing and air-drying until the sludge is naturally air-dried and hardened; then putting the air-dried sludge into a crusher for crushing, and after crushing, sieving by a 80-mesh sieve to obtain a granular sludge raw material; the building waste is bricks, and the processing steps of the bricks are that waste bricks obtained on the site are crushed by a crusher and filtered by a 120-mesh sieve to obtain granular building waste raw materials;
(2) stirring: adding water into the stirring equipment according to the ratio of the water to the cement of 1:0.9, starting the stirring equipment, and stirring and mixing the materials and the water in the stirring equipment; ventilating the stirring shaft in the stirring process to enable the stirring shaft to generate an outward sprayed airflow, so that materials in stirring equipment are impacted in the stirring process to achieve a good stirring and mixing effect, and performing the next operation after stirring for 30 min; (3) performance enhancement: adding reinforcing fibers into the material obtained by stirring in the step (2); specifically, the reinforcing fiber is composed of the following materials in parts by weight: 10 parts of glass fiber, 5 parts of polypropylene fiber and 5 parts of polyvinyl chloride resin; the preparation method comprises the following steps: putting the glass fiber, the polypropylene fiber and the polyvinyl chloride resin into a boiler, heating the boiler to 140 ℃, and reacting for 10min to finally prepare the reinforcing fiber; after the stirring equipment continues to stir for 1-2 hours, adding the water reducing agent into the materials, and then continuing to stir until the materials are uniformly mixed to obtain a finished product; specifically, the water reducing agent is composed of the following materials in parts by weight: 5 parts of naphthalene sulfonic acid formaldehyde, 4 parts of sodium hydroxide, 3 parts of ammonium persulfate and 2 parts of basalt fiber.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (4)
1. A method for preparing concrete comprising the steps of:
(1) raw material acquisition: obtaining sludge, construction waste, coal ash and cement and putting into a stirring device;
(2) stirring: adding water into the stirring equipment, starting the stirring equipment, and ventilating the stirring shaft in the stirring process so as to generate outward sprayed airflow on the stirring shaft and impact materials in the stirring equipment;
(3) performance enhancement: adding reinforcing fibers into the material obtained by stirring in the step (2) and continuously stirring; then adding a water reducing agent into the materials, and continuously stirring until the materials are uniformly mixed to obtain a finished product;
the sludge is a precipitate in a primary sedimentation tank for sewage treatment and is obtained by scraping out the precipitate by a sludge scraping device; before the sludge is put into the stirring equipment, the sludge also needs to be subjected to deodorization treatment: adding calcium oxide into the sludge according to the ratio of 2:1, uniformly mixing, and standing for 20-30 min; after standing, spreading and airing the sludge outdoors by using a rake until the sludge is naturally aired; then putting the air-dried sludge into a crusher and sieving the sludge by a sieve of 80 meshes to obtain a sludge raw material;
the stirring equipment comprises a rack (1), a shell (2) arranged on the rack, a stirring shaft (3) rotatably arranged on the shell, a spiral stirring paddle (4) arranged on the stirring shaft and a driving component (5) for driving the shell to rotate;
the stirring shaft (3) is provided with an aeration component (7) and a gas supply component (8) for supplying gas to the aeration component; the aeration component (7) comprises a first aeration channel (71) arranged on the stirring shaft, a second aeration channel (72) arranged in the stirring paddle and a plurality of aeration holes (73) arranged on the outer surface of the interval stirring paddle;
the gas supply part (8) comprises a connecting cavity (81) which is arranged on the stirring shaft and communicated with the first aeration channel, a connecting seat (82) which is matched with the connecting cavity, a gas inlet pipe fitting (83) which is fixedly arranged in the connecting seat and a gas generator which is connected with the gas inlet pipe fitting; the connecting seat (82) is in rotatable fit with the connecting cavity (81);
the connecting seat (82) is provided with a sealing structure matched with the air inlet pipe fitting, and the sealing part comprises a cage part (921) arranged on the connecting seat (82) and a plurality of rubber pieces (922) arranged in the cage part;
the outer surface of the stirring paddle (4) is coated with an elastic layer (41), the elastic layer is made of rubber, and the elastic layer is fixed on the outer surface of the stirring paddle (4) through bonding;
a one-way air outlet (411) is arranged on the elastic layer (41) corresponding to the aeration hole, and the one-way air outlet (411) is a linear gap arranged on the elastic layer (41);
the cage part (921) is formed by directly expanding one section of the insertion part outwards, and the forming method of the cage part (921) is as follows: a, slotting: a plurality of gaps are uniformly arranged on the outer surface of the middle lower part of the inserting part (92) at intervals; b, punch forming: stamping the connecting seat through a press machine, so that the position of the inserting part (92) provided with the gap expands outwards to form a cage part of a lantern-shaped structure; have a plurality of bar spares (923) on the cage portion after the shaping, form open slot (924) between the adjacent bar spare, rubber spare (922) by open slot (924) are plugged in extremely in the cage portion.
2. The method for preparing concrete according to claim 1, characterized in that: the water reducing agent is prepared from the following materials in parts by weight: 3-5 parts of naphthalene sulfonic acid formaldehyde, 3-4 parts of sodium hydroxide, 2-3 parts of ammonium persulfate and 1-2 parts of basalt fiber.
3. The method for preparing concrete according to claim 1, characterized in that: the building waste is bricks, and the bricks are crushed by a crusher and then pass through a 120-mesh sieve to obtain the building waste raw material.
4. The method for preparing concrete according to claim 1, characterized in that: the reinforcing fiber is composed of the following materials in parts by weight: 8-10 parts of glass fiber, 3-5 parts of polypropylene fiber and 3-5 parts of polyvinyl chloride resin.
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| CN201711186643.XA CN107915434B (en) | 2017-11-24 | 2017-11-24 | Method for preparing concrete |
| CN202010340946.8A CN111497010B (en) | 2017-11-24 | 2017-11-24 | Building construction concrete preparation method based on resource recycling |
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| CN201711186643.XA CN107915434B (en) | 2017-11-24 | 2017-11-24 | Method for preparing concrete |
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| CN112238528B (en) * | 2020-10-26 | 2021-12-07 | 杨丰华 | Grouting device for hydraulic engineering construction |
| CN113442295A (en) * | 2021-07-08 | 2021-09-28 | 新汶矿业集团设计研究院有限公司 | Slurry making and preparing system and method suitable for large horizontal sand silo of mine filling station |
| CN116715814B (en) * | 2023-08-10 | 2023-11-28 | 中交路桥建设有限公司 | Glue-reducing polycarboxylate superplasticizer, concrete and production system thereof |
Citations (3)
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| CN101570416A (en) * | 2009-01-23 | 2009-11-04 | 北京四方如钢混凝土制品有限公司 | Sewage treatment tailing recycling method |
| CN103739242A (en) * | 2013-12-05 | 2014-04-23 | 北京四方如钢混凝土制品有限公司 | Method used for preparing solid blocks with sludge and waste material, solid blocks, and backfilling method |
| CN206106099U (en) * | 2016-10-10 | 2017-04-19 | 苏州明耀达新型建材有限公司 | Mortar stirring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH01254285A (en) * | 1987-12-28 | 1989-10-11 | Miike Tekkosho:Kk | Garbage incinerated ash and preparation thereof |
| CN1353019A (en) * | 2000-11-08 | 2002-06-12 | 人善企业株式会社 | Production equipment of regenerated aggregate using building waste material as raw material and regenerated aggregate |
| JP2003127127A (en) * | 2001-10-25 | 2003-05-08 | Shinki Sangyo Kk | Concrete kneader |
| AU2002333539A1 (en) * | 2002-05-07 | 2003-11-11 | Waste Markets Corporation | Recycled waste as air entrainment admixtures |
| CN204278231U (en) * | 2014-12-09 | 2015-04-22 | 温州大学瓯江学院 | A kind of slurry agitator |
| CN106045424A (en) * | 2016-05-25 | 2016-10-26 | 象州县科学技术局 | Method for producing prefabricated member of concrete ditch by using construction waste |
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2017
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570416A (en) * | 2009-01-23 | 2009-11-04 | 北京四方如钢混凝土制品有限公司 | Sewage treatment tailing recycling method |
| CN103739242A (en) * | 2013-12-05 | 2014-04-23 | 北京四方如钢混凝土制品有限公司 | Method used for preparing solid blocks with sludge and waste material, solid blocks, and backfilling method |
| CN206106099U (en) * | 2016-10-10 | 2017-04-19 | 苏州明耀达新型建材有限公司 | Mortar stirring device |
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| CN111497010A (en) | 2020-08-07 |
| CN111497010B (en) | 2021-08-31 |
| CN107915434A (en) | 2018-04-17 |
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