CN112079598A - Manufacturing method of concrete drain pipe - Google Patents

Manufacturing method of concrete drain pipe Download PDF

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Publication number
CN112079598A
CN112079598A CN202010971291.4A CN202010971291A CN112079598A CN 112079598 A CN112079598 A CN 112079598A CN 202010971291 A CN202010971291 A CN 202010971291A CN 112079598 A CN112079598 A CN 112079598A
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China
Prior art keywords
knocking
die
concrete
mold
drain pipe
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CN202010971291.4A
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CN112079598B (en
Inventor
杨孕粤
单雨恬
黄炜
叶江惠
王祥
沈卫锋
包建国
尉锋
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Jiangxi Green Blue Innovative Building Materials Co ltd
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Shaoxing Xinke Energy Saving Building Materials Co ltd
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/52Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • B28B1/525Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement containing organic fibres, e.g. wood fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00Methods or machines specially adapted for the production of tubular articles
    • B28B21/02Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/10Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
    • B28B21/14Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means vibrating, e.g. the surface of the material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28CPREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/40Mixing specially adapted for preparing mixtures containing fibres
    • B28C5/402Methods
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/26Corrosion of reinforcement resistance
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/27Water resistance, i.e. waterproof or water-repellent materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34Non-shrinking or non-cracking materials
    • C04B2111/343Crack resistant materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/56Compositions suited for fabrication of pipes, e.g. by centrifugal casting, or for coating concrete pipes
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/05Materials having an early high strength, e.g. allowing fast demoulding or formless casting
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Abstract

The invention discloses a manufacturing method of a concrete drain pipe, which comprises the following steps that (a) raw materials of the drain pipe are prepared according to the mixture ratio; the concrete drain pipe is characterized by high early compressive strength, corrosion resistance of a reinforcing mesh, good seepage and crack resistance, high compressive strength and the like, and is manufactured by reasonable proportioning design, manufacturing process and improvement of manufacturing equipment.

Description

Manufacturing method of concrete drain pipe
Technical Field
The invention relates to the technical field of building pipes, in particular to a manufacturing method of a concrete drain pipe.
Background
The concrete drain pipe is an indispensable building material in urban construction engineering and mainly undertakes drainage tasks such as rainwater, sewage, farmland drainage and irrigation. The existing concrete drain pipe is generally manufactured by adopting the traditional methods such as a centrifugal process, a suspension roller type process, a vertical vibration process, a core mold vibration process and the like, and the manufactured concrete drain pipe still has the problems of low compactness, poor compressive strength, insufficient seepage and crack prevention, short service life and the like, so that the technical problem which needs to be solved urgently at present is how to manufacture the high-performance concrete drain pipe by adopting a reliable and feasible method.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a manufacturing method of a concrete drain pipe, and the concrete drain pipe with the characteristics of high early compressive strength, corrosion prevention of a reinforcing mesh, good seepage prevention and crack prevention performance, high compressive strength and the like is manufactured by reasonably proportioning design, manufacturing process and improvement of manufacturing equipment, so that the defect problems of the existing concrete drain pipe are solved, and the construction quality is ensured.
In order to achieve the purpose, the invention adopts the following technical scheme:
a manufacturing method of a concrete drain pipe comprises the following steps:
(a) preparing the following drain pipe raw materials in parts by mass: 18-25% of iron tailings or copper tailings, 10-16% of stones, 10-16% of fine stones, 21-30% of cement, 8-13% of sand mud, 0.5-2% of zinc stearate, 0.3-0.8% of sodium nitrate, 1.5-2.5% of polypropylene fibers, 1-2% of lignin fibers and 12.5-16% of water;
(b) adding sodium nitrate and zinc stearate into water, and uniformly stirring to obtain a mixed emulsion;
(c) forcibly stirring cement, polypropylene fiber and lignin fiber for 1min to obtain a cement dry mixture, and then spraying and adding mixed emulsion into the premix while stirring to obtain cement mixed slurry;
the zinc stearate is insoluble in water but easily dispersed in water, and can effectively improve the impermeability of concrete when being used for concrete. The sodium nitrate is used as a concrete additive, and can play a role in improving the early compressive strength of the concrete drain pipe, preventing the reinforcing mesh from being corroded and preventing the concrete drain pipe from being damaged by freezing. In the conventional method for preparing the concrete drain pipe, cement is generally directly stirred and blended with other raw materials to prepare concrete slurry, but in practice, the concrete slurry obtained by the operation is accompanied by some dry cement lumps, cement particles are not uniformly dispersed in water, and three cement lumps, three cement lumps and three cement lumps are gathered together to form tiny cement lumps, so that the workability and the strength of the concrete are influenced. In the step, the mixed emulsion and the cement are uniformly mixed by adopting a method of stirring and spraying, so that the infiltration of water on cement particles can be promoted, the agglomeration of the cement particles is reduced, and the agglomeration of the cement particles is further reduced by utilizing the zinc stearate, thereby being beneficial to improving the dispersibility of the cement particles in concrete products and ensuring the performance uniformity of the concrete.
The polypropylene fiber is added into the concrete, which not only can prevent the sinking of the aggregate, improve the workability and bleeding and reduce the segregation, but also can effectively bear the tensile strain generated by the shrinkage of the concrete, delay or prevent the occurrence and the development of micro cracks inside the concrete and surface macro cracks and improve the impermeability of the concrete. The lignin fiber is added into concrete, and has the effects of promoting the uniform dispersion of aggregates, enhancing the bonding capability among the aggregates, improving the anti-cracking performance at low temperature and ensuring the high-temperature stability. In the step, the polypropylene fiber, the lignin fiber and other raw materials are forcibly stirred, so that the polypropylene fiber and the lignin fiber can be uniformly dispersed in the other raw materials, the binding force among the raw materials is further enhanced, and the compressive strength of the concrete drain pipe is improved.
(d) Dry-mixing and mixing the stones, the fine stones, the sand mud, the iron tailings or the copper tailings, and then conveying the mixture into the cement mixed slurry to continue stirring and mixing to obtain concrete slurry;
(e) installing a pipe die, manufacturing a drain pipe by adopting a vertical vibration device: the pipe die comprises an inner die and an outer die which are sleeved and fixed inside and outside, a reinforcing mesh is arranged between the inner die and the outer die, and the vertical vibration device comprises a vibration table, an inner knocking mechanism arranged in the inner cavity of the inner die and outer knocking mechanisms which are uniformly distributed on the periphery of the outer die in a circumferential mode;
pour into the concrete thick liquids into between centre form and the external mold, 5min stews after the compound die, drive the pipe die through the shaking table and vibrate from top to bottom, strike the centre form inner wall through interior knocking mechanism simultaneously, strike the external mold outer wall through outer knocking mechanism, the vibration finishes, mend the concrete thick liquids after the die sinking between centre form and the external mold, the compound die once more, drive the pipe die through the shaking table and vibrate from top to bottom, strike centre form upper portion inner wall through interior knocking mechanism simultaneously, actually indicate centre form 2/3 high department inner wall, strike external mold upper portion outer wall through outer knocking mechanism, actually indicate external mold 2/3 high department outer wall, the vibration finishes the back and stews, carry out the drawing of patterns after waiting the concrete initial set, the maintenance operation, natural air drying, make.
The concrete pipe forming process includes centrifugal process, suspension roller process, vertical vibration process, core mold vibration process, etc. the core mold vibration process includes setting steel skeleton or cage skeleton between the inner and outer molds, setting on vibration table, and utilizing crane to fill concrete into the pipe mold via the concrete discharging truck or cone. The concrete slurry of each part of the drain pipe is fully vibrated by the vibration method in the step, so that all raw material particles are in a tremble state, the motion of each raw material particle is increased, the collision frequency and the collision strength among the particles are increased, the compactness of the concrete is improved, and the compressive strength of the drain pipe is improved.
The inner knocking mechanism comprises an inner support arranged in an inner cavity of the inner mold, a group of first knocking structures capable of moving up and down and arranged on the inner support or a plurality of groups of first knocking structures with fixed installation heights and arranged on the inner support, and the outer knocking mechanisms comprise outer supports uniformly distributed on the periphery of the outer mold, a group of second knocking structures capable of moving up and down and arranged on each outer support or a plurality of groups of second knocking structures with fixed installation heights and arranged on each outer support.
The first knocking structure and the second knocking structure are both single groups and can move up and down, and the specific vibration modes are as follows: the first knocking structure is driven by a first motor and a first screw rod to move up and down, and the second knocking structure is driven by a second motor and a second screw rod to move up and down;
after the pipe die is driven by the vibrating table to vibrate up and down, the first knocking structure and the second knocking structure are started to correspondingly knock the lower part of the inner die and the lower part of the outer die, actually, the inner wall at the height of 1/3 of the inner die and the outer wall at the height of 1/3 of the outer die are knocked, after the pipe die is vibrated for 2-3 min, the first motor and the second motor are started to correspondingly drive the first knocking structure and the second knocking structure to move up and down, the knocking of the first knocking structure on the inner die and the knocking of the second knocking structure on the outer die are simultaneously kept in the up-and-down moving process, the up-and-down cyclic motion of the first knocking structure and the second knocking structure is repeated for 2-3 times, then the vibrating table, the first knocking structure, the second knocking structure, the first motor and the second motor are closed, concrete slurry is added and the die is closed, the vibrating table is started again, and then the, the first knocking structure and the second knocking structure are driven to move upwards to the upper portion of the pipe die, the actual finger moves to the height position of the pipe die 2/3, the first knocking structure and the second knocking structure are started, the first knocking structure and the second knocking structure are kept to knock for 1-2 min at the height position, knocking is stopped, the vibration table is closed, and vibration operation is completed.
The first knocking structure and the second knocking structure are concrete vibration modes with a plurality of groups of height fixing modes: concrete slurry is injected between the inner mold and the outer mold and is subjected to mold closing, after the concrete slurry is stood, the vibration table is started, each first knocking structure and each second knocking structure are started to enable the first knocking structures and the second knocking structures to correspond to the knocking inner mold and the outer mold, after the concrete slurry vibrates for 5-6 min, the vibration table is closed, each first knocking structure and each second knocking structure are supplemented, the concrete slurry is fed in and the mold is closed, the vibration table is started again, then the first knocking structures located at the top and the second knocking structures located at the top are started, after the concrete slurry is knocked for 2-3 min, the vibration table is closed, the first knocking structures and the second knocking structures are closed, and the vibration operation is completed.
First strike structure includes the bottom plate, adorns pillar on the bottom plate admittedly, installs adjustable shelf on the pillar, adorns first rotating electrical machines on the bottom plate admittedly and connect the first rotatory lead screw at first rotating electrical machines power take off end, the adjustable shelf includes that the slip cover of slip cover at the pillar outer wall, be the radial connecting rod that articulates on slip cover upper portion of circumference, be the radial interior piece of striking that articulates on pillar upper portion of circumference, the connecting rod outer end articulates in striking middle part, slip cover lower part one side and first rotatory lead screw spiro union, first rotating electrical machines strikes the piece through slip cover, connecting rod drive and makes the extension and draw in the motion and constantly strike the interior mould inner wall in.
The second strikes the structure and includes outer piece, mounting panel, adorns mounting bracket and second rotating electrical machines on the mounting panel respectively admittedly, connects the rotatory lead screw of second, the spiro union on the rotatory lead screw of second rotating electrical machines power take off end, it is articulated with the mounting bracket to strike a middle part outward, it is articulated with the articulated elements to strike an outer end outward, the second rotating electrical machines strikes the piece through second rotating lead screw, articulated elements drive outward and makes outer expanding and draw in the motion in and break and strike the external mold outer wall.
In the step (a), the particle size of the stones is 16-31.5 mm, and the particle size of the fine stones is 5-16 mm.
The invention has the beneficial effects that:
(1) the static electricity among the polypropylene fibers is eliminated by forced stirring and the cement particles, so that the uniform dispersion of the polypropylene fibers is promoted, the binding force among the raw materials of the concrete can be enhanced, and the impermeability of the concrete drain pipe is improved;
(2) mixing the emulsion (containing sodium nitrate and zinc stearate) with a cement dry mixture (containing polypropylene fiber and lignin fiber) by a stirring and spraying method, so that the infiltration of water to cement particles can be promoted, the agglomeration of the cement particles is reduced, and the agglomeration of the cement particles is further reduced by using the zinc stearate, so that the dispersibility of the cement particles in a concrete product is improved, and the performance of the concrete is ensured;
(3) the improved vertical vibration device is adopted to prepare the drain pipe, so that concrete slurry at each part of the drain pipe can be sufficiently and effectively vibrated, the compactness of concrete is greatly improved, and the strength of the drain pipe is ensured;
(4) through reasonable proportioning design, manufacturing process and improvement of manufacturing equipment, the concrete drain pipe with the characteristics of high early compressive strength, reinforcement mesh corrosion prevention, good seepage prevention and crack prevention performance, high compressive strength and the like is prepared, the problems commonly existing in the existing concrete drain pipe are well solved, and the construction quality is ensured.
Drawings
FIG. 1 is a schematic structural view of a pipe mold and a vertical vibration device for manufacturing a drain pipe according to embodiments 1 to 3 of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a schematic top view of the inner frame and the movable frame according to embodiments 1 to 3 of the present invention;
fig. 4 is a schematic structural view of a pipe die and a vertical vibration device for manufacturing a drain pipe according to embodiments 4 to 6 of the present invention.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description below:
example 1
A manufacturing method of a concrete drain pipe comprises the following steps:
(a) preparing the following drain pipe raw materials in parts by mass: 20% of iron tailings or copper tailings, 14% of stones, 10% of fine stones, 24% of cement, 12.7% of sand mud, 1% of zinc stearate, 0.3% of sodium nitrate, 2.5% of polypropylene fibers, 1.5% of lignin fibers and 14% of water; wherein the particle size of the stones is 16-31.5 mm, and the particle size of the fine stones is 5-16 mm;
(b) adding sodium nitrate and zinc stearate into water, and uniformly stirring to obtain a mixed emulsion;
(c) forcibly stirring cement, polypropylene fiber and lignin fiber for 1min to obtain a cement dry mixture, and then spraying and adding mixed emulsion into the premix while stirring to obtain cement mixed slurry;
(d) dry-mixing and mixing the stones, the fine stones, the sand mud, the iron tailings or the copper tailings, and then conveying the mixture into the cement mixed slurry to continue stirring and mixing to obtain concrete slurry;
(e) installing a pipe die, manufacturing a drain pipe by adopting a vertical vibration device:
as shown in fig. 1 to 3, the pipe die comprises an inner die 5 and an outer die 6 which are sleeved and fixed inside and outside, a reinforcing mesh 7 is arranged between the inner die 5 and the outer die 6, and the vertical vibration device comprises a vibration table 8, an inner knocking mechanism 1 arranged in the inner cavity of the inner die 5 and outer knocking mechanisms 2 which are uniformly distributed on the periphery of the outer die 6 in a circumferential manner; the pipe die further comprises a bottom die 9, a top die 91 and an inner die snap ring 92, wherein the bottom die 9 is placed on the vibration table 8, the inner die 5 is installed between the bottom die 9 and the top die 91, the inner die 5 and the top die 91 are connected through the inner die snap ring 92, and the concrete installation structures of the pipe die and the reinforcing mesh 7 are common modes in the existing concrete drain pipe core die vibration process and are not detailed here.
The inner knocking mechanism 1 comprises an inner support 11 arranged in an inner cavity of the inner die 5 and a group of first knocking structures 3 which are arranged on the inner support 11 and can move up and down, and the outer knocking mechanism 2 comprises outer supports 21 uniformly distributed on the periphery of the outer die 6 and a group of second knocking structures 4 which are arranged on each outer support 21 and can move up and down.
The first knocking structure 3 is driven to move up and down by a first motor 12 and a first screw rod 13. First strike structure 3 includes bottom plate 31, adorns pillar 32 on bottom plate 31 admittedly, installs the adjustable shelf on pillar 32, adorns first rotating electrical machines 36 on bottom plate 31 admittedly and connects the first rotatory lead screw 37 at first rotating electrical machines 36 power take off end, the adjustable shelf includes that the slip cover 33, the connecting rod 34 that is the radial hinge on slip cover 33 upper portion of circumference, be the radial internal knocking piece 35 that articulates on pillar 32 upper portion of circumference are established at the slip cover 32 outer wall to slip the cover including sliding, connecting rod 34 outer end hinge connects to internal knocking piece 35 middle part, slip cover 33 lower part one side and first rotatory lead screw 37 spiro union, first rotating electrical machines 36 strikes 5 inner walls through slip cover 33, connecting rod 34 drive knocking piece 35 do the extension and draw in the motion in and constantly the interior mould. The inner support 11 is further provided with a plurality of guide rods 14, the bottom plate 31 penetrates through the guide rods 3 and moves up and down along the guide rods 14, the bottom plate 31 is provided with a fixed frame 38, and the upper end of the first rotary screw rod 37 is rotatably connected with the fixed frame 38 through a bearing.
The second knocking structure 4 is driven by a second motor 22 and a second screw rod 23 to move up and down. The second knocking structure 4 comprises an outer knocking part 46, a mounting plate 43, a mounting rack 44 and a second rotating motor 41 which are respectively fixedly mounted on the mounting plate 43, a second rotating screw rod 42 connected to the power output end of the second rotating motor 41, and a hinge part 45 screwed on the second rotating screw rod 42, wherein the middle part of the outer knocking part 46 is hinged to the mounting rack 44, the outer end of the outer knocking part 46 is hinged to the hinge part 45, and the second rotating motor 41 drives the outer knocking part 46 to perform outward expansion and furling movement through the second rotating screw rod 42 and the hinge part 45 so as to break the outer wall of the outer die 6. The upper end of the second rotary screw rod 42 is rotatably connected with the mounting rack 44 through a bearing; the outer bracket 4 is also provided with a plurality of directional rods 24, and the mounting plate 43 is arranged on the directional rods 24 in a penetrating way and moves up and down along the directional rods 24.
The specific vibration mode when the first knocking structure 3 and the second knocking structure 4 are both single groups and can move up and down is as follows: injecting concrete slurry between the inner mold 5 and the outer mold 6, standing for 5min after mold closing, starting the vibrating table 8 to drive the pipe mold to vibrate up and down, starting the first knocking structure 3 and the second knocking structure 4 to enable the first knocking structure 3 and the second knocking structure 4 to correspondingly knock the inner wall at the one third height of the inner mold 5 and the outer wall at the one third height of the outer mold 6, starting the first motor 12 and the second motor 22 to correspondingly drive the first knocking structure 3 and the second knocking structure 4 to move up and down after vibrating for 2-3 min, simultaneously keeping the knocking of the first knocking structure 3 on the inner mold 5 and the knocking of the second knocking structure 4 on the outer mold 6 during the up-and-down movement, repeating the up-and-down circular movement of the first knocking structure 3 and the second knocking structure 4 for 2-3 times, then closing the vibrating table 8, the first knocking structure 3, the second knocking structure 4, the first motor 12 and the second motor 22, filling the concrete slurry between the inner mold 5 and the outer mold 6 after mold opening, the mould is closed again, the vibration table 8 is started, then the first motor 12 and the second motor 22 are started, the first knocking structure 3 and the second knocking structure 4 are driven to move upwards to the 2/3 height of the pipe mould, the first knocking structure 3 and the second knocking structure 4 are started and kept to knock at the height for 1-2 min, knocking is stopped, the vibration table 8 is closed, vibration operation is completed, standing is performed after vibration is completed, demoulding and maintenance operation are performed after concrete is initially set, and natural air drying is performed to obtain the concrete drain pipe.
Example 2
A manufacturing method of a concrete drain pipe comprises the following steps:
preparing the following drain pipe raw materials in parts by mass: 18% of iron tailings or copper tailings, 16% of stones, 13% of fine stones, 23% of cement, 13% of sand mud, 0.5% of zinc stearate, 0.5% of sodium nitrate, 2% of polypropylene fibers, 1% of lignin fibers and 13% of water, wherein the particle size of the stones is 16-31.5 mm, and the particle size of the fine stones is 5-16 mm; then, a drain pipe was produced according to the steps (b) to (e) in example 1.
Example 3
A manufacturing method of a concrete drain pipe comprises the following steps:
preparing the following drain pipe raw materials in parts by mass: 18% of iron tailings or copper tailings, 13.2% of stones, 11% of fine stones, 28% of cement, 10% of sand mud, 1.5% of zinc stearate, 0.8% of sodium nitrate, 1.5% of polypropylene fibers, 1% of lignin fibers and 15% of water, wherein the particle size of the stones is 16-31.5 mm, and the particle size of the fine stones is 5-16 mm; then, a drain pipe was produced according to the steps (b) to (e) in example 1.
Example 4
A manufacturing method of a concrete drain pipe comprises the following steps:
(a) preparing the following drain pipe raw materials in parts by mass: 21% of iron tailings or copper tailings, 10% of stones, 10% of fine stones, 30% of cement, 8% of sand mud, 2% of zinc stearate, 0.5% of sodium nitrate, 1.5% of polypropylene fibers, 1% of lignin fibers and 16% of water; wherein the particle size of the stones is 16-31.5 mm, and the particle size of the fine stones is 5-16 mm;
(b) adding sodium nitrate and zinc stearate into water, and uniformly stirring to obtain a mixed emulsion;
(c) forcibly stirring cement, polypropylene fiber and lignin fiber for 1min to obtain a cement dry mixture, and then spraying and adding mixed emulsion into the premix while stirring to obtain cement mixed slurry;
(d) dry-mixing and mixing the stones, the fine stones, the sand mud, the iron tailings or the copper tailings, and then conveying the mixture into the cement mixed slurry to continue stirring and mixing to obtain concrete slurry;
(e) installing a pipe die, manufacturing a drain pipe by adopting a vertical vibration device:
as shown in fig. 4, the pipe die comprises an inner die 5 and an outer die 6 which are sleeved and fixed, a reinforcing mesh 7 is arranged between the inner die 5 and the outer die 6, and the vertical vibration device comprises a vibration table 8, an inner knocking mechanism 1 arranged in the inner cavity of the inner die 5 and outer knocking mechanisms 2 which are uniformly distributed on the periphery of the outer die 6 in a circumferential manner; the pipe die further comprises a bottom die 9, a top die 91 and an inner die snap ring 92, wherein the bottom die 9 is placed on the vibration table 8, the inner die 5 is installed between the bottom die 9 and the top die 91, the inner die 5 and the top die 91 are connected through the inner die snap ring 92, and the concrete installation structures of the pipe die and the reinforcing mesh 7 are common modes in the existing concrete drain pipe core die vibration process and are not detailed here.
The inner knocking mechanism 1 comprises an inner support 11 arranged in an inner cavity of the inner die 5 and a plurality of groups of first knocking structures 3 which are arranged on the inner support 11 and fixed in mounting height, and the outer knocking mechanism 2 comprises outer supports 21 uniformly distributed on the periphery of the outer die 6 and a plurality of groups of second knocking structures 4 which are arranged on each outer support 21 and fixed in mounting height.
First strike structure 3 includes bottom plate 31, adorns pillar 32 on bottom plate 31 admittedly, installs the adjustable shelf on pillar 32, adorns first rotating electrical machines 36 on bottom plate 31 admittedly and connects the first rotatory lead screw 37 at first rotating electrical machines 36 power take off end, the adjustable shelf includes that the slip cover 33, the connecting rod 34 that is the radial hinge on slip cover 33 upper portion of circumference, be the radial internal knocking piece 35 that articulates on pillar 32 upper portion of circumference are established at the slip cover 32 outer wall to slip the cover including sliding, connecting rod 34 outer end hinge connects to internal knocking piece 35 middle part, slip cover 33 lower part one side and first rotatory lead screw 37 spiro union, first rotating electrical machines 36 strikes 5 inner walls through slip cover 33, connecting rod 34 drive knocking piece 35 do the extension and draw in the motion in and constantly the interior mould. The base plate 31 of the first striker structure 3 is fixed to the inner support 11.
The second knocking structure 4 comprises an outer knocking part 46, a mounting plate 43, a mounting rack 44 and a second rotating motor 41 which are respectively fixedly mounted on the mounting plate 43, a second rotating screw rod 42 connected to the power output end of the second rotating motor 41, and a hinge part 45 screwed on the second rotating screw rod 42, wherein the middle part of the outer knocking part 46 is hinged to the mounting rack 44, the outer end of the outer knocking part 46 is hinged to the hinge part 45, and the second rotating motor 41 drives the outer knocking part 46 to perform outward expansion and furling movement through the second rotating screw rod 42 and the hinge part 45 so as to break the outer wall of the outer die 6. The mounting plate 43 of the second rapping structure 4 is fixed to the outer bracket 21.
The first knocking structure 3 and the second knocking structure 4 are both specifically vibrating in a multi-group height fixing mode: injecting concrete slurry between the inner mold 5 and the outer mold 6, standing for 5min after mold closing, starting the vibration table 8, restarting each first knocking structure 3 and each second knocking structure 4 to enable the knocking inner mold 5 and the outer mold 6 to correspond to each other, after vibrating for 5-6 min, closing the vibration table 8, each first knocking structure 3 and each second knocking structure 4, supplementing the concrete slurry and closing the mold, starting the vibration table 8 again, then starting the first knocking structure 3 positioned at the top and the second knocking structure 4 positioned at the top, after knocking for 1-2 min, closing the vibration table 8, the first knocking structure 3 and the second knocking structure 4, and finishing the vibration operation. And standing after the vibration is finished, demolding and curing after the concrete is initially set, and naturally drying to obtain the concrete drain pipe.
Example 5
A manufacturing method of a concrete drain pipe comprises the following steps:
preparing the following drain pipe raw materials in parts by mass: 20% of iron tailings or copper tailings, 12% of stones, 12% of fine stones, 27.5% of cement, 8% of sand mud, 1% of zinc stearate, 0.8% of sodium nitrate, 2% of polypropylene fibers, 1.2% of lignin fibers and 15.5% of water, wherein the particle size of the stones is 16-31.5 mm, and the particle size of the fine stones is 5-16 mm; then, a drain pipe was produced according to the steps (b) to (e) in example 4.
Example 6
A manufacturing method of a concrete drain pipe comprises the following steps:
preparing the following drain pipe raw materials in parts by mass: 18% of iron tailings or copper tailings, 14.1% of stones, 16% of fine stones, 21% of cement, 12% of sand mud, 1.5% of zinc stearate, 0.4% of sodium nitrate, 2.5% of polypropylene fibers, 2% of lignin fibers and 12.5% of water, wherein the particle size of the stones is 16-31.5 mm, and the particle size of the fine stones is 5-16 mm; then, a drain pipe was produced according to the steps (b) to (e) in example 4.
Example 7
A manufacturing method of a concrete drain pipe comprises the following steps:
(a) preparing the following drain pipe raw materials in parts by mass: 20% of iron tailings or copper tailings, 14% of stones, 10% of fine stones, 24% of cement, 12.7% of sand mud, 1% of zinc stearate, 0.3% of sodium nitrate, 2.5% of polypropylene fibers, 1.5% of lignin fibers and 14% of water; wherein the particle size of the stones is 16-31.5 mm, and the particle size of the fine stones is 5-16 mm;
(b) adding sodium nitrate and zinc stearate into water, and uniformly stirring to obtain a mixed emulsion;
(c) forcibly stirring cement, polypropylene fiber and lignin fiber for 1min to obtain a cement dry mixture, and then spraying and adding mixed emulsion into the premix while stirring to obtain cement mixed slurry;
(d) dry-mixing and mixing the stones, the fine stones, the sand mud, the iron tailings or the copper tailings, and then conveying the mixture into the cement mixed slurry to continue stirring and mixing to obtain concrete slurry;
(e) installing a pipe die, manufacturing a drain pipe by adopting a vertical vibration device: the tube die construction was as described in example 1.
The inner knocking mechanism 1 comprises an inner support 11 arranged in an inner cavity of the inner die 5 and a group of first knocking structures 3 which are arranged on the inner support 11 and can move up and down, and the outer knocking mechanism 2 comprises outer supports 21 uniformly distributed on the periphery of the outer die 6 and a plurality of groups of second knocking structures 4 which are arranged on each outer support 21 and are fixed in mounting height.
The first knocking structure 3 is driven to move up and down by a first motor 12 and a first screw rod 13. First strike structure 3 includes bottom plate 31, adorns pillar 32 on bottom plate 31 admittedly, installs the adjustable shelf on pillar 32, adorns first rotating electrical machines 36 on bottom plate 31 admittedly and connects the first rotatory lead screw 37 at first rotating electrical machines 36 power take off end, the adjustable shelf includes that the slip cover 33, the connecting rod 34 that is the radial hinge on slip cover 33 upper portion of circumference, be the radial internal knocking piece 35 that articulates on pillar 32 upper portion of circumference are established at the slip cover 32 outer wall to slip the cover including sliding, connecting rod 34 outer end hinge connects to internal knocking piece 35 middle part, slip cover 33 lower part one side and first rotatory lead screw 37 spiro union, first rotating electrical machines 36 strikes 5 inner walls through slip cover 33, connecting rod 34 drive knocking piece 35 do the extension and draw in the motion in and constantly the interior mould. The inner support 11 is further provided with a plurality of guide rods 14, the bottom plate 31 penetrates through the guide rods 3 and moves up and down along the guide rods 14, the bottom plate 31 is provided with a fixed frame 38, and the upper end of the first rotary screw rod 37 is rotatably connected with the fixed frame 38 through a bearing.
The second knocking structure 4 comprises an outer knocking part 46, a mounting plate 43, a mounting rack 44 and a second rotating motor 41 which are respectively fixedly mounted on the mounting plate 43, a second rotating screw rod 42 connected to the power output end of the second rotating motor 41, and a hinge part 45 screwed on the second rotating screw rod 42, wherein the middle part of the outer knocking part 46 is hinged to the mounting rack 44, the outer end of the outer knocking part 46 is hinged to the hinge part 45, and the second rotating motor 41 drives the outer knocking part 46 to perform outward expansion and furling movement through the second rotating screw rod 42 and the hinge part 45 so as to break the outer wall of the outer die 6. The mounting plate 43 of the second rapping structure 4 is fixed to the outer bracket 21.
The specific vibration mode that the first knocking structure 3 is a single group and can move up and down and the second knocking structure 4 is a plurality of groups and is arranged in a height fixing mode is as follows: injecting concrete slurry between the inner mold 5 and the outer mold 6, standing for 5min after mold closing, starting the vibrating table 8 to drive the pipe mold to vibrate up and down, starting each second knocking structure 4 to correspondingly knock the outer mold 6, simultaneously starting the first knocking structure 3 to knock the inner mold 5, starting the first motor 12 to drive the first knocking structure 3 to move up and down, keeping the knocking of the first knocking structure 3 on the inner mold 5 during the up-and-down movement, repeating the up-and-down cyclic movement of the first knocking structure 3 for 2-3 times, then closing the vibrating table 8, the first knocking structure 3, each second knocking structure 4 and the first motor 12, filling concrete slurry between the mold opening inner mold 5 and the outer mold 6, closing the mold again, starting the vibrating table 8, then starting the first motor 12, driving the first knocking structure 3 to move up to the 2/3 height of the pipe mold, starting the first knocking structure 3 and the second knocking structure 4 positioned at the top, and keeping the first knocking structure 3 and the second knocking structure 4 positioned at the top knocking for 1-2 min at the height, stopping knocking, closing the vibrating table 8, completing the vibrating operation, standing after the vibration is finished, demolding after the concrete is initially set, performing maintenance operation, and naturally drying to obtain the concrete drain pipe.
Example 8
A manufacturing method of a concrete drain pipe comprises the following steps:
(a) preparing the following drain pipe raw materials in parts by mass: 21% of iron tailings or copper tailings, 10% of stones, 10% of fine stones, 30% of cement, 8% of sand mud, 2% of zinc stearate, 0.5% of sodium nitrate, 1.5% of polypropylene fibers, 1% of lignin fibers and 16% of water; wherein the particle size of the stones is 16-31.5 mm, and the particle size of the fine stones is 5-16 mm;
(b) adding sodium nitrate and zinc stearate into water, and uniformly stirring to obtain a mixed emulsion;
(c) forcibly stirring cement, polypropylene fiber and lignin fiber for 1min to obtain a cement dry mixture, and then spraying and adding mixed emulsion into the premix while stirring to obtain cement mixed slurry;
(d) dry-mixing and mixing the stones, the fine stones, the sand mud, the iron tailings or the copper tailings, and then conveying the mixture into the cement mixed slurry to continue stirring and mixing to obtain concrete slurry;
(e) installing a pipe die, manufacturing a drain pipe by adopting a vertical vibration device: the tube die construction was as described in example 1.
The inner knocking mechanism 1 comprises an inner support 11 arranged in an inner cavity of the inner die 5 and a plurality of groups of first knocking structures 3 which are arranged on the inner support 11 and fixed in installation height, and the outer knocking mechanism 2 comprises outer supports 21 uniformly distributed on the periphery of the outer die 6 and a group of second knocking structures 4 which are arranged on each outer support 21 and can move up and down.
First strike structure 3 includes bottom plate 31, adorns pillar 32 on bottom plate 31 admittedly, installs the adjustable shelf on pillar 32, adorns first rotating electrical machines 36 on bottom plate 31 admittedly and connects the first rotatory lead screw 37 at first rotating electrical machines 36 power take off end, the adjustable shelf includes that the slip cover 33, the connecting rod 34 that is the radial hinge on slip cover 33 upper portion of circumference, be the radial internal knocking piece 35 that articulates on pillar 32 upper portion of circumference are established at the slip cover 32 outer wall to slip the cover including sliding, connecting rod 34 outer end hinge connects to internal knocking piece 35 middle part, slip cover 33 lower part one side and first rotatory lead screw 37 spiro union, first rotating electrical machines 36 strikes 5 inner walls through slip cover 33, connecting rod 34 drive knocking piece 35 do the extension and draw in the motion in and constantly the interior mould. The base plate 31 of the first striker structure 3 is fixed to the inner support 11.
The second knocking structure 4 is driven by a second motor 22 and a second screw rod 23 to move up and down. The second knocking structure 4 comprises an outer knocking part 46, a mounting plate 43, a mounting rack 44 and a second rotating motor 41 which are respectively fixedly mounted on the mounting plate 43, a second rotating screw rod 42 connected to the power output end of the second rotating motor 41, and a hinge part 45 screwed on the second rotating screw rod 42, wherein the middle part of the outer knocking part 46 is hinged to the mounting rack 44, the outer end of the outer knocking part 46 is hinged to the hinge part 45, and the second rotating motor 41 drives the outer knocking part 46 to perform outward expansion and furling movement through the second rotating screw rod 42 and the hinge part 45 so as to break the outer wall of the outer die 6. The upper end of the second rotary screw rod 42 is rotatably connected with the mounting rack 44 through a bearing; the outer bracket 4 is also provided with a plurality of directional rods 24, and the mounting plate 43 is arranged on the directional rods 24 in a penetrating way and moves up and down along the directional rods 24.
The first knocking structure 3 is set in a multi-group height fixing mode, and the second knocking structure 4 is set in a single group in a specific vibration mode capable of moving up and down: injecting concrete slurry between the inner mold 5 and the outer mold 6, standing for 5min after mold closing, starting the vibration table 8, starting each first knocking structure 3 to correspondingly knock the inner mold 5, simultaneously starting the second knocking structure 4 to knock the outer wall of the outer mold 6, starting the second motor 22 to drive the second knocking structure 4 to move up and down after vibrating for 2-3 min, keeping the second knocking structure 4 knocking the outer mold 6 during the up-and-down movement, repeating the up-and-down circular movement of the second knocking structure 4 for 2-3 times, closing the vibration table 8, the second motor 22, each first knocking structure 3 and the second knocking structure 4 after vibrating for 5-6 min, supplementing the concrete slurry and closing the mold, starting the vibration table 8 again, starting the second motor 22 to drive the second knocking structure 4 to move up to the 2/3 height of the pipe mold, starting the second knocking structure 4 and keeping the second knocking structure 4 knocking at the height, and simultaneously starting the first knocking structures 3 positioned at the top, and closing the vibrating table 8, the first knocking structures 3 and the second knocking structures 4 after knocking for 2-3 min, so as to finish the vibration operation. And standing after the vibration is finished, demolding and curing after the concrete is initially set, and naturally drying to obtain the concrete drain pipe.
Comparative examples 1 to 6
The concrete drain pipe is prepared according to the methods of the embodiments 1 to 6, except that the vertical vibration device is not adopted in the step (e), and only the vibration table (8) is adopted for vibration.
Comparative examples 7 to 9
Correspondingly, the concrete drain pipe is prepared according to the method of the embodiment 1-3, except that the step (c) is changed into adding the mixed emulsion into the cement while stirring and spraying to obtain cement mixed slurry; and (d) mixing the cobbles, the fine cobbles, the sand mud, the iron tailings or the copper tailings, the polypropylene fibers and the lignin fibers in a dry mixing manner, and then conveying the mixture to the cement mixed slurry to continue stirring and mixing to obtain the concrete slurry.
Comparative examples 10 to 12
Correspondingly, the concrete drain pipe is prepared according to the method of the embodiment 4-6, except that the cement, the polypropylene fiber and the lignin fiber are forcibly stirred for 1min in the steps (b) and (c) to obtain a cement dry mixture, then water is added into the cement dry mixture while stirring, and then the polypropylene fiber and the lignin fiber are added and uniformly stirred to obtain cement mixed slurry.
The performance of the concrete drain pipes (each having an inner diameter of 600mm and a wall thickness of 50mm) manufactured in examples 1 to 8, comparative examples 1 to 6, and comparative examples 7 to 9 was measured, and the results are shown in table 1. As can be seen from table 1, the concrete drain pipes manufactured in examples 1 to 8 have the characteristics of high early compressive strength, corrosion prevention of the reinforcing mesh, good seepage prevention and crack prevention performance, high compressive strength and the like, and meanwhile, the strength performance of the concrete drain pipes manufactured in examples 1 to 8 is superior to that of the concrete drain pipes manufactured in comparative examples 1 to 6, which indicates that the drain pipes manufactured by adding the improved vertical vibration device can effectively improve the compactness of concrete, and further improve the strength of products; the concrete drain pipes prepared in the embodiments 1 to 3 are superior to the concrete drain pipes prepared in the comparative examples 7 to 9 in crack resistance and seepage resistance, because the polypropylene fibers and the cement are forcibly stirred, static electricity among the polypropylene fibers can be eliminated through fine particles of the dry cement, so that the polypropylene fibers are uniformly dispersed in the concrete, and further the seepage resistance of the drain pipes is improved, in the comparative example, the polypropylene fibers are added in the subsequent process, cement particles are formed into cement slurry before, the static electricity elimination effect of the cement particles on the polypropylene fibers is weak, and the dispersibility of the polypropylene fibers in the concrete slurry is insufficient; the strength performance of the concrete drain pipes prepared in examples 4 to 6 was superior to that of the concrete drain pipes prepared in comparative examples 10 to 12, because zinc stearate could promote the dispersion of cement particles when the mixed emulsion of zinc stearate and sodium nitrate was mixed with cement, and if cement was mixed with water first, a small portion of cement aggregates remained in the mixture, and even if zinc stearate was subsequently added, the dispersion effect was still not ideal.
Figure BDA0002684134740000181
Figure BDA0002684134740000191
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (7)

1. A manufacturing method of a concrete drain pipe is characterized in that: the method comprises the following steps:
(a) preparing the following drain pipe raw materials in parts by mass: 18-25% of iron tailings or copper tailings, 10-16% of stones, 10-16% of fine stones, 21-30% of cement, 8-13% of sand mud, 0.5-2% of zinc stearate, 0.3-0.8% of sodium nitrate, 1.5-2.5% of polypropylene fibers, 1-2% of lignin fibers and 12.5-16% of water;
(b) adding sodium nitrate and zinc stearate into water, and uniformly stirring to obtain a mixed emulsion;
(c) forcibly stirring cement, polypropylene fiber and lignin fiber for 1min to obtain a cement dry mixture, and then spraying and adding mixed emulsion into the premix while stirring to obtain cement mixed slurry;
(d) dry-mixing and mixing the stones, the fine stones, the sand mud, the iron tailings or the copper tailings, and then conveying the mixture into the cement mixed slurry to continue stirring and mixing to obtain concrete slurry;
(e) installing a pipe die, manufacturing a drain pipe by adopting a vertical vibration device: the pipe die comprises an inner die (5) and an outer die (6) which are sleeved and fixed inside and outside, a reinforcing mesh (7) is arranged between the inner die (5) and the outer die (6), and the vertical vibration device comprises a vibration table (8), an inner knocking mechanism (1) arranged in the inner cavity of the inner die (5) and outer knocking mechanisms (2) which are uniformly distributed on the periphery of the outer die (6) in the circumferential direction;
pouring concrete slurry into the space between the inner mold (5) and the outer mold (6), standing for 5min after mold closing, driving the pipe mold to vibrate up and down through a vibrating table (8), knocking the inner wall of the inner mold (5) through an inner knocking mechanism (1) simultaneously, knocking the outer wall of the outer mold (6) through an outer knocking mechanism (2), finishing vibration, supplementing the concrete slurry between the inner mold (5) and the outer mold (6) after mold opening, closing the mold again, driving the pipe mold to vibrate up and down through the vibrating table (8), knocking the inner wall of the upper part of the inner mold (5) through the inner knocking mechanism (1) simultaneously, knocking the outer wall of the upper part of the outer mold (6) through the outer knocking mechanism (2), standing after finishing vibration, demolding after initial setting of concrete, maintaining operation, natural air drying, and preparing the concrete drain pipe.
2. A method of manufacturing a concrete drain pipe according to claim 1, wherein: the inner knocking mechanism (1) comprises an inner support (11) arranged in an inner cavity of the inner die (5), a group of first knocking structures (3) which can move up and down and are arranged on the inner support (11) or a plurality of groups of first knocking structures (3) which are fixed in mounting height and are arranged on the inner support (11), and the outer knocking mechanism (2) comprises outer supports (21) which are uniformly distributed on the periphery of the outer die (6), a group of second knocking structures (4) which can move up and down and are arranged on each outer support (21) or a plurality of groups of second knocking structures (4) which are fixed in mounting height and are arranged on each outer support (21).
3. A method of manufacturing a concrete drain pipe according to claim 2, wherein: the first knocking structure (3) and the second knocking structure (4) are both single groups and can move up and down, and the specific vibration modes are as follows: the first knocking structure (3) is driven by a first motor (12) and a first screw rod (13) to move up and down, and the second knocking structure (4) is driven by a second motor (22) and a second screw rod (23) to move up and down;
after the pipe die is driven by the vibrating table (8) to vibrate up and down, the first knocking structure (3) and the second knocking structure (4) are started to correspondingly knock the lower part of the inner die (5) and the lower part of the outer die (6), after the pipe die is vibrated for 2-3 min, the first motor (12) and the second motor (22) are started to correspondingly drive the first knocking structure (3) and the second knocking structure (4) to move up and down, the knocking of the first knocking structure (3) on the inner die (5) and the knocking of the second knocking structure (4) on the outer die (6) are simultaneously kept in the up-and-down moving process, the up-and-down circular motion of the first knocking structure (3) and the second knocking structure (4) is repeated for 2-3 times, then the vibrating table (8), the first knocking structure (3), the second knocking structure (4), the first motor (12) and the second motor (22) are closed, and after concrete slurry is added into the die, and (2) starting the vibrating table (8) again, then starting the first motor (12) and the second motor (22), driving the first knocking structure (3) and the second knocking structure (4) to move upwards to the upper part of the pipe die, starting the first knocking structure (3) and the second knocking structure (4), keeping the first knocking structure (3) and the second knocking structure (4) to knock 1-2 min at the height, stopping knocking, closing the vibrating table (8), and finishing the vibrating operation.
4. A method of manufacturing a concrete drain pipe according to claim 2, wherein: the first knocking structure (3) and the second knocking structure (4) are concrete vibration modes which are set in a multi-group height fixing mode: concrete slurry is injected between the inner die (5) and the outer die (6) and is subjected to die assembly, after the concrete slurry is stood, the vibration table (8) is started, each first knocking structure (3) and each second knocking structure (4) are started to be correspondingly knocked against the inner die (5) and the outer die (6), after 5-6 min of vibration is carried out, the vibration table (8) is closed, each first knocking structure (3) and each second knocking structure (4) are supplemented, the vibration table (8) is started again, then the first knocking structure (3) at the top and the second knocking structure (4) at the top are started, after 2-3 min of knocking, the vibration table (8) is closed, the first knocking structure (3) and the second knocking structure (4) are knocked, and vibration operation is completed.
5. A method of manufacturing a concrete drain pipe according to claim 2, wherein: the first knocking structure (3) comprises a bottom plate (31), a support post (32) fixedly arranged on the bottom plate (31), a movable frame arranged on the support post (32), a first rotating motor (36) fixedly arranged on the bottom plate (31) and a first rotating screw rod (37) connected with a power output end of the first rotating motor (36), the movable frame comprises a sliding sleeve (33) which is sleeved on the outer wall of the support post (32) in a sliding way, a connecting rod (34) which is radially hinged on the upper part of the sliding sleeve (33) in a circumferential way, and an inner knocking piece (35) which is radially hinged on the upper part of the support post (32) in a circumferential way, the outer end of the connecting rod (34) is hinged to the middle part of the inner knocking piece (35), one side of the lower part of the sliding sleeve (33) is in threaded connection with a first rotary screw rod (37), the first rotating motor (36) drives the knocking piece (35) to do expanding and contracting motions through the sliding sleeve (33) and the connecting rod (34) so as to continuously knock the inner wall of the inner die (5).
6. A method of manufacturing a concrete drain pipe according to claim 2, wherein: the second is beaten structure (4) and is adorned mounting bracket (44) and second rotating electrical machines (41), second rotating electrical machines (42), the articulated elements (45) of spiro union on second rotating electrical machines (42) of connecting on mounting panel (43) are adorned including outer piece (46), mounting panel (43) admittedly respectively, knocked piece (46) middle part outward and mounting bracket (44) are articulated, it is articulated with articulated elements (45) to knock piece (46) outer end outward, second rotating electrical machines (41) are beated piece (46) through second rotating electrical machines (42), articulated elements (45) drive outward and are beated the motion and break and beat external mold (6) outer wall with gathering in the motion and doing outward.
7. A method of manufacturing a concrete drain pipe according to claim 1, wherein: in the step (a), the particle size of the stones is 16-31.5 mm, and the particle size of the fine stones is 5-16 mm.
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