CN115477504A - Wet-mixed mortar based on wet-process stone powder and preparation process thereof - Google Patents
Wet-mixed mortar based on wet-process stone powder and preparation process thereof Download PDFInfo
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- CN115477504A CN115477504A CN202211226654.7A CN202211226654A CN115477504A CN 115477504 A CN115477504 A CN 115477504A CN 202211226654 A CN202211226654 A CN 202211226654A CN 115477504 A CN115477504 A CN 115477504A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses wet-mixed mortar based on wet-process stone powder, which is characterized by comprising the following components in percentage by weight: comprises the following components: 8 to 15 portions of cement, 4 to 8 portions of mineral admixture, 5.5 to 10 portions of wet-process mountain flour, 62 to 71 portions of sand, 0.1 to 0.3 portion of additive and 11 to 15 portions of water; the wet-mixed mortar is economical, environment-friendly and qualified in performance without complex process treatment.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to wet-mixed mortar based on wet-process stone powder and a preparation process thereof.
Background
The wet-mixed mortar is a novel building material prepared by premixing a cementing material, fine aggregates, an admixture, an additive and water through mechanical equipment according to a certain proportion, has the characteristics of various varieties, superior performance, environmental protection and the like, can be controlled and mechanically produced through a computer, is convenient to use, and gradually replaces the traditional mortar to be widely applied to building engineering so as to realize the surface protection and decoration of building structures. At present, the prices of raw materials such as cement, fly ash and quartz sand for producing wet-mixed mortar are continuously rising, and the preparation of the wet-mixed mortar with qualified performance by adopting more economical and easily available raw materials is a main technical approach for reducing the cost. The wet-mixed mortar is transported to a site for construction after all raw materials are mixed in a mixing station, and the performance of the wet-mixed mortar is unstable during construction due to the long transportation distance or the influence of other uncertain factors, so that the key problem that how to maintain the construction performance of the wet-mixed mortar for a long time is required to be considered in production and application of the wet-mixed mortar.
The stone powder is an inevitable by-product in the production process of the machine-made aggregate, and a large amount of water resources are consumed to treat the finished product in the production process of the wet-method machine-made sand aggregate, so that the surface of the machine-made aggregate is clean, and the content of the stone powder is low. The waste water containing a large amount of stone powder is precipitated in a sedimentation tank by a flocculation method, and then is subjected to filter pressing and dehydration treatment to obtain mud-cake-shaped wet-process stone powder. The wet-process mountain flour is difficult to apply due to poor performance compatibility, and is usually disposed by a landfill method, but the disposal method can have adverse effects on the environment, for example, the high concentration of aluminum after the mud cake treated by polyaluminium chloride is buried can lead to the fixation of phosphorus in soil and hinder the growth of plants. If wet-process stone powder thickening and filling effects are utilized to prepare wet-mixed mortar with qualified performance, the production cost of the mortar can be reduced, and the solid waste discharge can be reduced.
Patent CN201811321602.1 discloses a ready-mixed wet-mixed mortar and a preparation method of the ready-mixed wet-mixed mortar, wherein fly ash and residual slurry of a pipe pile are used as raw materials, and industrial byproducts are secondarily utilized to reduce production cost. Patent CN201510493481.9 discloses a wet-mixed mortar doped with iron tailing sand and a preparation method thereof, mainly using waste tailing sand as fine aggregate to reduce production cost. Patent CN202010684866.4 discloses a wet-mixed mortar and a preparation process, which mainly uses alkaline residue to prepare a cementing material so as to reduce the production cost. At present, a wet-mixed mortar technology which is economical, environment-friendly and good in construction performance retention capacity and is prepared by using wet-process stone powder is not available.
Disclosure of Invention
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
The invention provides wet-mixed mortar based on wet-process stone powder and a preparation process thereof, aiming at overcoming the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a wet-mixed mortar based on wet-process stone powder is characterized in that: comprises the following components: 8 to 15 portions of cement, 4 to 8 portions of mineral admixture, 5.5 to 10 portions of wet-process mountain flour, 62 to 71 portions of sand, 0.1 to 0.3 portion of additive and 11 to 15 portions of water.
Furthermore, the sand is machine-made sand or river sand with fineness modulus of 2.3-3.0.
Furthermore, the additive is a retarding high-performance water reducing agent.
The invention also provides a method for preparing the wet-mixed mortar based on wet-process stone powder, which comprises the following steps: a. testing the water content of the wet-process stone powder by adopting a sampling and drying method rapid detector, and adjusting the construction mixing ratio of the wet-mixed mortar according to the water content; b. adding wet-process stone powder into stirring equipment according to the construction mixing proportion, stirring and dispersing the mud-cake-shaped wet-process stone powder for 2-4 min at the speed of 20-30 r/min, then adding sand, stirring and dispersing for 2-4 min at the speed of 20-30 r/min, adding water, and stirring and dispersing for 1-3 min at the speed of 30-60 r/min; c. c, adding cement and mineral admixture into the mixture obtained in the step b, stirring for 2-4 min at the speed of 30-60 r/min, and adding the admixture while stirring to enable the consistency of the wet-mixed mortar to be 90-110 mm; d. discharging the mixed mortar from the stirring equipment, and cleaning the inner wall of the stirring equipment; the stirring device comprises: the stirring tank is configured to be provided with a stirring cavity for containing mortar; the first connecting shaft penetrates through the stirring cavity; the scraper is movably connected to the first connecting shaft; the driving piece is used for driving the stirring tank to rotate relative to the first connecting shaft; the mounting rack is used for supporting the stirring tank; the stirring tank is rotatably connected to the mounting frame and is provided with a feeding hole; when the feed inlet is vertically upward, the scraper is disengaged from the inner wall of the stirring cavity; when the feed inlet is vertically downward, the scraper blade is contacted with the inner wall of the stirring cavity.
Further, the stirring device further comprises: the supporting frame is arranged on the mounting frame; the second connecting shaft is arranged on the supporting frame; the mounting frame is provided with a connecting hole for the second connecting shaft to pass through, and the second connecting shaft is arranged on the supporting frame.
Further, the stirring device further comprises: the connecting block is connected to the first connecting shaft; the vibrating piece intermittently impacts the inner wall of the stirring cavity to vibrate the side wall of the stirring cavity; the scraper blade is arranged on the connecting block.
Furthermore, a separation cavity is arranged on the stirring tank, and a control piece used for pushing the scraper to move in the direction away from the inner wall of the stirring tank is arranged in the separation cavity.
Furthermore, the control part is provided with a plurality of thrust pieces used for pushing the vibrating piece to move towards the middle part of the stirring cavity, and a gap exists between every two adjacent thrust pieces.
Furthermore, a first supporting ring and a second supporting ring are arranged in the separating cavity, and the control piece is arranged between the first supporting ring and the second supporting ring.
Furthermore, a first movable cavity is formed in the connecting block, a second connecting rod is arranged on the scraper, the second connecting rod penetrates through the first movable cavity, a supporting spring is arranged in the first movable cavity, a magnetic plate is arranged at one end of the second connecting rod, the control piece is made of a magnetic material, and magnetism of the magnetic plate and magnetism of the control piece repel each other.
The invention has the advantages that: provides wet-process stone powder-based wet-mixed mortar which can be prepared into economic, environment-friendly and qualified wet-mixed mortar without complex process treatment and a preparation process thereof.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and the description of the exemplary embodiments of the present application are provided for explaining the present application and do not constitute an undue limitation on the present application.
Further, throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic and that elements and components are not necessarily drawn to scale.
In the drawings:
FIG. 1 is a schematic structural view of a stirring device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the stirring apparatus of the embodiment of FIG. 1 at the first connecting shaft;
FIG. 3 is an enlarged view of the embodiment of FIG. 1 at the connection block of the stirring device;
FIG. 4 is a cross-sectional view at the agitator tank of the stirring apparatus of the embodiment shown in FIG. 1;
FIG. 5 is a cross-sectional view at a first connecting shaft of a stirring device according to another embodiment of the invention;
FIG. 6 is an enlarged view of the embodiment of FIG. 5 at the connection block of the stirring device;
FIG. 7 is a cross-sectional view at a first connecting shaft of a stirring device according to yet another embodiment of the present invention;
FIG. 8 is an enlarged view of the embodiment of FIG. 7 at the blades of the stirring apparatus;
fig. 9 is an enlarged view of the embodiment of fig. 7 at the threaded rod of the stirring device.
The reference numerals in the figures have the following meanings:
101. a mounting frame; 102. a support frame; 1021. a third support ring; 1022. a second connecting shaft; 1023. a hand wheel; 103. a stirring tank; 103a, a compartment; 1031. a ring gear; 104. a housing; 105. a first mounting plate; 106. a drive member; 1061. a third transmission wheel; 107. pressing a plate; 108. a roller; 109. a first transmission shaft; 1091. a second transmission shaft; 1092. a first drive pulley; 110. a chain; 111. a first connecting shaft; 1111. a first connecting rod; 112. a squeegee; 1121. a second connecting rod; 1122. a magnetic plate; 1123. a support spring; 113. fixing the rod; 114. connecting blocks; 114a, a first active cavity; 114b, a second movable cavity; 114c, a flow guide surface; 115. a vibrating member; 1151. a first connecting spring; 116. a control member; 1161. a thrust member; 117. a second support ring; 118. a first support ring;
201. a first connecting shaft; 202. a motor; 203. a wire roller; 204. connecting blocks; 204a, a third movable cavity; 205. a vibrating member; 2051. a ball bearing; 206. a movable plate; 2061. a magnetic block; 2062. a second connecting spring; 207. connecting ropes;
301. a squeegee; 301a, a vertical segment; 301b, an inclined section; 302. a first air bag; 303. a second air bag; 304. a second push plate; 3041. a bump; 305. a metal foil; 306. an aluminum foil sheet; 307. a first push plate; 308. a fixing plate; 3081. an end plate; 309. a threaded rod.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is to be understood that the disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and the embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.
It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings. The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.
It should be noted that the terms "first", "second", and the like in the present disclosure are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence relationship of the functions performed by the devices, modules or units.
It is noted that references to "a", "an", and "the" modifications in this disclosure are intended to be illustrative rather than limiting, and that those skilled in the art will recognize that "one or more" may be used unless the context clearly dictates otherwise.
The names of messages or information exchanged between devices in the embodiments of the present disclosure are for illustrative purposes only, and are not intended to limit the scope of the messages or information.
The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The wet-mixed mortar doped with wet-process stone powder and having a strength grade of M10 is prepared from the following components in parts by weight: 9.5 parts of cement, 4.0 parts of mineral admixture, 9.5 parts of wet-process stone powder (mass for removing water), 63 parts of sand, 0.1 part of additive and 13.5 parts of water; the wet-process stone powder has a 45-micron screen residue of 15%, a 28d activity index of 66%, a loss on ignition of 2.2% and a density of 2.67g/cm 3 (ii) a The sand is machine-made sand with fineness modulus of 2.8; the additive is a retarding high-performance water reducing agent.
The preparation process of the wet-mixed mortar comprises the following steps:
s1, measuring the water content of wet-process stone powder to be 4.5% by adopting a sampling and drying method, and adjusting the construction mixing ratio of the wet-process mortar according to the water content, namely changing the wet-process stone powder into 9.9275 parts, changing the water into 13.0275 parts, and keeping other materials unchanged;
s2, adding wet-process stone powder into stirring equipment according to the construction mixing proportion, stirring and dispersing the mud-cake-shaped wet-process stone powder for 2min at the speed of 20r/min, then adding sand, stirring and dispersing for 2min at the speed of 20r/min, adding water, and stirring and dispersing for 1min at the speed of 30 r/min;
s3, adding cement and mineral admixture into the mixture obtained in the step S2, stirring for 2min at the speed of 30r/min, and adding the admixture while keeping the consistency of the wet-mixed mortar to be 90-110 mm;
and S4, discharging the mixed mortar from the stirring equipment, and cleaning the inner wall of the stirring equipment.
The prepared wet-mixed mortar has the consistency of 98mm, the water retention of 89%, the loss rate of the consistency of 2.37% after 2 hours and the compressive strength of 12.3MPa, and has good construction performance and mechanical performance meeting the requirements.
As shown in fig. 1 to 4, the stirring apparatus includes a stirring tank 103, a first connecting shaft 111, a scraper 112, a driving member 106, a mounting frame 101, and a support frame 102.
The agitator tank 103 is configured to have an agitator chamber for containing mortar; the first connecting shaft 111 penetrates through the stirring cavity; the scraper 112 is movably connected to the first connecting shaft 111; the driving member 106 is used for driving the stirring tank 103 to rotate relative to the first connecting shaft 111; the mounting frame 101 is used for supporting the stirring tank 103, a plurality of rollers 108 are arranged at the bottom of the mounting frame 101, so that the mounting frame 101 can move as required, a first mounting plate 105 is arranged on the mounting frame 101, a driving part 106 is arranged on the first mounting plate 105, and the driving part 106 is a motor; the stirring tank 103 is arranged on the support frame 102, the support frame 102 is rotatably connected to the mounting frame 101, a second connecting shaft 1022 is arranged on the support frame 102, a connecting hole for the second connecting shaft 1022 to pass through is formed in the mounting frame 101, a hand wheel 1023 is arranged at one end of the second connecting shaft 1022, the hand wheel 1023 is arranged on the outer side of the mounting frame 101, and the first connecting shaft 111 is fixedly connected to the support frame 102; the stirring tank 103 is provided with a feeding hole, and the feeding hole is formed in the top of the stirring tank 103; when the feed inlet is vertically upward, the scraper 112 is separated from the inner wall of the stirring cavity; when the feed inlet is vertically downward, the scraper 112 is in contact with the inner wall of the stirring cavity.
After the raw materials are placed into the stirring cavity from the feeding hole, the feeding hole is in a vertically upward state at the moment, the scraper blade 112 is separated from contact with the inner wall of the stirring cavity, the driving piece 106 drives the stirring tank 103 to rotate relative to the first connecting shaft 111, the scraper blade 112 stops the materials in the stirring tank 103, so that the materials and the stirring tank 103 move relatively to stir the materials; after the mortar stirring is completed, the hand wheel 1023 is rotated, the second connecting shaft drives the support frame 102 to rotate, the stirring tank 103 rotates along with the support frame 102, the stirring tank 103 rotates to a state that the feed inlet faces downwards, the scraper blade 112 contacts with the inner wall of the stirring cavity, the mortar in the stirring cavity is discharged from the feed inlet, the driving piece 106 drives the stirring tank 103 to rotate, the stirring tank 103 rotates relative to the scraper blade 112, the scraper blade 112 contacts with the inner wall of the stirring cavity to clean the inner wall of the stirring cavity, the mortar on the inner wall of the stirring cavity is scraped, the residue in the stirring cavity is reduced, and the phenomenon that the mortar on the inner wall of the stirring cavity is adhered on the inner wall of the stirring cavity after being dried is avoided.
The state of the scraper 112 is adjusted through the position of the stirring tank 103 after rotation, so that the scraper 112 does not contact with the inner wall of the stirring cavity when stirring the mortar, the abrasion between the scraper 112 and the inner wall of the stirring cavity is reduced, meanwhile, as the stirring tank 103 rotates relative to the mortar, the mortar generates resistance on the scraper 112, the resistance on the rotation of the stirring tank 103 is reduced in a way that the scraper 112 is separated from the inner wall of the stirring cavity, and the output power of the driving piece 106 is reduced; after the stirring tank 103 is turned over, the scraper 112 is in contact with the inner wall of the stirring cavity, the mortar is discharged from the feeding port at the moment, the resistance on the scraper 112 is reduced, the overall mass of the stirring tank 103 is reduced, the energy consumption of the driving part 106 cannot be increased even if the scraper 112 is in contact with the inner wall of the stirring cavity, the stirring tank 103 rotates relative to the scraper 112, the inner wall of the stirring tank 103 is cleaned by the scraper 112, and the mortar residue on the inner wall of the stirring cavity is reduced.
A cover 104 is arranged on the mounting frame 101, a second mounting plate is arranged on the side wall of the mounting frame 101, the first mounting plate 105 is arranged below the second mounting plate, the cover 104 is covered on the second mounting plate, a first through hole is arranged on the mounting frame 101, the first through hole and the connecting hole are oppositely arranged, a second through hole corresponding to the second through hole is arranged on the support frame 102, a first transmission shaft 109 is arranged in the first through hole in a penetrating manner, a first transmission wheel 1092 is arranged at one end of the first transmission shaft 109, a second transmission shaft 1091 is arranged at the other end of the first transmission shaft 1092, the first transmission wheel 1092 is arranged in the cover 104, the second transmission shaft 1091 is arranged in the second through hole in a penetrating manner, a second transmission wheel is arranged at one end of the second transmission shaft 1091, a gear ring 1031 matched with the second transmission wheel is arranged on the side wall of the stirring tank 103, a third support ring 1021 is arranged on the support frame 102, a convex ring is arranged on the side wall of the stirring tank 103, the convex ring is arranged below the gear 1031, the convex ring is arranged on the third support ring 1021 through a bearing, a pressing plate 107 is connected with a pressing plate 107, and the pressing plate 107 is fixed on the third support ring 1021; the output shaft of the driving member 106 is provided with a third driving wheel 1061, and the third driving wheel 1061 and the first driving wheel 1092 are in driving engagement through a chain 110.
When the driving piece 106 drives the third driving wheel 1061 to rotate, the third driving wheel 1061 transmits power to the first driving wheel 1092 through the chain 110, and the stirring tank 103 is driven to rotate by the cooperation of the second driving wheel and the gear ring 1031, so as to provide power for the rotation of the stirring tank 103; the second connecting shaft 1022 and the first transmission shaft 109 cooperate with each other to provide a supporting force for the supporting frame 102, so as to connect the supporting frame 102 to the mounting frame 101; when the stirring tank 103 is turned over, the driving part 106 stops working, the hand wheel 1023 is rotated, the hand wheel 1023 drives the second connecting shaft 1022 to rotate, the second connecting shaft 1022 rotates in the connecting hole, the first transmission shaft 109 rotates in the first through hole, the stirring tank 103 rotates 180 degrees, mortar in the stirring tank 103 is discharged, and after the stirring tank 103 is turned over, the driving part 106 can still rotate through the stirring tank 103 driven by the second transmission shaft, so that the inner wall of a stirring cavity is cleaned; the overturning of the stirring tank can be realized by adopting a mode that the driving piece drives the second connecting shaft to rotate.
A first connecting rod 1111 is arranged on the first connecting shaft 111, a connecting block 114 is arranged at one end of the first connecting rod 1111, a first movable cavity 114a is arranged on the connecting block 114, a second connecting rod 1121 is arranged on the scraper 112, the second connecting rod 1121 penetrates through the first movable cavity 114a, and a supporting spring 1123 is arranged in the first movable cavity 114 a; the side wall of the connecting block 114 is provided with a flow guide surface 114c, and the flow guide surface 114c forms a conical structure on the side wall of the connecting block 114.
When stirring the mortar, second connecting rod 1121 is in first activity chamber 114a, scraper blade 112 and stirring intracavity wall contactless, agitator tank 103 drives the mortar and rotates, and the mortar removes for connecting block 114, utilizes setting up of water conservancy diversion face with the propelling movement of sand toward different directions, plays the water conservancy diversion effect to the mortar, promotes the stirring effect to the mortar, reduces the resistance that receives when agitator tank 103 rotates, reduces remaining mortar on the connecting block 114 simultaneously.
A second movable cavity 114b is arranged on the connecting block 114, the second movable cavity 114b is arranged above the first movable cavity 114a, one end of the second movable cavity 114b is provided with a first connecting spring 1151, and one end of the first connecting spring 1151 is provided with a vibration piece 115; a separation cavity 103a is arranged on the side wall of the stirring tank 103, a control piece 116 used for pushing the scraper 112 to move away from the inner wall of the stirring tank 103 is arranged in the separation cavity 103a, the control piece 116 is of an annular structure, a plurality of thrust pieces 1161 used for pushing the vibrating piece 115 to move towards the middle of the stirring cavity are arranged on the control piece 116, a gap exists between every two adjacent thrust pieces 1161, a first support ring 118 and a second support ring 117 are arranged in the separation cavity 103a, the first support ring 118 is arranged below the second support ring 117, and the control piece 116 is arranged between the first support ring and the second support ring; the vibration element 115, the control element 116 and the pushing element 1161 are made of magnets, one end of the second connecting rod 1121 is provided with a magnetic plate 1122, the magnetism of the magnetic plate 1122 is repulsive to the magnetism of the control element 116, and the magnetism of the pushing element 1161 is repulsive to the magnetism of the vibration element 115.
When the feed inlet is in a vertically upward state, the mortar in the stirring tank 103 is stirred, the control piece 116 is arranged on the first support ring, the control piece 116 is positioned on one side of the magnetic plate 1122 at the moment, the magnetic force on the control piece 116 acts on the magnetic plate 1122, and the magnetic plate 1122 is pushed into the first movable cavity 114a, so that a gap is reserved between the scraper blade 112 and the inner wall of the stirring cavity, the resistance to rotation of the stirring tank 103 is reduced, and the stirring effect on the mortar is achieved; when the stirring tank 103 rotates to the position that the feeding hole faces downwards, the control piece 116 moves downwards under the action of gravity and falls on the second support ring, at this time, the control piece 116 is staggered with the magnetic plate 1122, the magnetic force applied to the magnetic plate 1122 is reduced, the support spring 1123 pushes the magnetic plate 1122 to move towards the outer side of the first movable cavity 114a, the magnetic plate 1122 drives the scraper blade 112 to move together, and the scraper blade 112 abuts against the inner wall of the stirring cavity; when the control part 116 is positioned on the second support ring, the thrust piece 1161 is positioned on one side of the vibrating piece 115, when the driving part 106 drives the stirring tank 103 to rotate, the thrust piece 1161 is discontinuously aligned with the vibrating piece 115, when the thrust piece 1161 is aligned with the vibrating piece 115, the influence of the magnetic force on the thrust piece 1161 on the vibrating piece 115 is the greatest, the thrust piece 1161 pushes the vibrating piece 115 to move into the second movable cavity 114b, the first connecting spring 1151 is in a compressed state, after the thrust piece 1161 is staggered with the vibrating piece 115, the thrust of the thrust piece 1161 on the vibrating piece 115 is reduced until the thrust is completely eliminated, the first connecting spring 1151 pushes the vibrating piece 115 to extend out from the second movable cavity 114b, the vibrating piece 115 impacts on the scraper 112 to generate vibration on the scraper 112, the vibration on the scraper 112 is transmitted to the inner wall of the stirring tank 103, and the vibration on the stirring cavity is expanded under the setting of the partition 103a, so that the inner wall of the stirring cavity generates more violent vibration, and the cleaning effect on the inner wall of the stirring cavity is improved by matching with the scraper 112; when the stirring cavity rotates, the pushing force piece 1161 intermittently rotates to one side of the vibration piece 115, so that the vibration piece 115 intermittently impacts the scraper 112, and thus the inner wall of the whole stirring cavity generates continuous vibration, and the cleaning effect on the inner wall of the stirring cavity is improved.
A fixing groove is formed in the support frame 102, a fixing rod 113 penetrates through the mounting frame 101, and the fixing rod 113 is inserted into the fixing groove to fix the support frame 102 at the current position, so that the stirring tank 103 is prevented from moving when in use, and the use reliability of the stirring tank 103 is improved; when the agitator tank overturns, extract the dead lever from the fixed slot in, make the agitator tank normally overturn to do the clearance to agitator tank inside.
As shown in fig. 5 to 6, as a further preferable scheme, one end of the second movable cavity is provided with a third movable cavity 204a, a third through hole is formed on a side wall of the third movable cavity 204a, a second connecting spring 2062 is arranged on an inner wall of the second movable cavity, one end of the second connecting spring 2062 is provided with a movable plate 206, a magnetic block 2061 is arranged on the movable plate 206, the magnetic block 2061 penetrates through the third through hole, a part of the magnetic block 2061 is located in the second movable cavity, and the magnetism of the magnetic block 2061 is attracted to the magnetism of the vibrating piece 205; be equipped with first cavity on the first connecting axle 201, the support frame bottom is equipped with motor 202, is equipped with line roller 203 on the output shaft of motor 202, and in first cavity was worn to locate by line roller 203, be equipped with on the fly leaf 206 and connect rope 207, connect rope 207 one end and link firmly on line roller 203, motor 202 was inverter motor 202.
In this embodiment, the control member is not provided with a thrust member, and the vibration member 205 is driven to move only by the magnetic block 2061.
After the stirring tank rotates to the position that the feeding hole faces downwards, mortar is discharged from the feeding hole, the wire roller 203 driven by the motor 202 rotates discontinuously, the connecting rope 207 pulls the movable plate 206 to move in the third movable cavity 204a discontinuously, after the movable plate 206 moves in the third movable cavity 204a, the distance between the magnetic block 2061 and the vibrating piece 205 is increased, the first connecting spring pushes the vibrating piece 205 to extend out of the second movable cavity, and vibration is generated on the inner wall of the stirring cavity; after the stirring tank rotates for one circle, the motor 202 changes the output power, so that the movable plate 206 impacts the inner wall of the stirring cavity at a position different from that of the previous circle; specifically, the agitator tank is when changeing first circle, stirring intracavity wall is once strikeed to vibrations 205 when the agitator tank rotates 0.2 circles, the agitator tank is when changeing the second circle, a stirring intracavity wall is once strikeed to vibrations 205 when the agitator tank rotates 0.4 circles, the agitator tank is when changeing the third circle, a stirring intracavity wall is once strikeed to vibrations 205 when the agitator tank rotates 0.2 circles once more, so relapse, make the agitator tank have different contact points with vibrations 205 when rotating adjacent circle, thereby produce vibrations on the different positions of agitator tank, promote the vibrations homogeneity on the agitator tank, promote the clearance effect to the agitator tank.
One end of the vibration piece 205 is provided with a groove, a ball 2051 is arranged in the groove, and the ball 2051 can rotate in the groove and cannot be taken out of the groove; a fourth through hole for the vibration piece 205 to pass through is formed in the scraper plate, and the vibration piece 205 directly passes through the fourth through hole to impact the inner wall of the stirring cavity when extending out of the second movable cavity, so that the vibration effect of the inner wall of the stirring cavity is improved; the balls 2051 are in contact with the inner wall of the stirring cavity, so that the friction force between the vibration piece 205 and the inner wall of the stirring cavity is reduced, the abrasion between the vibration piece 205 and the inner wall of the stirring cavity is reduced, the resistance on the rotation of the stirring tank is reduced, and the energy consumption of the driving piece is reduced.
As shown in fig. 7 to 9, as another preferable scheme, a second cavity is provided on the partition board, a first air bag 302 and a second air bag 303 are provided in the second cavity, the scraper 301 includes a vertical section 301a and an inclined section 301b, the inclined section 301b is provided at the top of the vertical section 301a, so that the scraper 301 can contact with the inner wall of the whole stirring tank, the first air bag 302 is provided in the second cavity of the vertical section 301a, the second air bag 303 is provided in the second cavity of the inclined section 301b, one side wall of the scraper 301 close to the inside of the stirring tank is made of rubber material, a plurality of metal sheets 305 are adhered to the side wall, and the metal sheets 305 protect the rubber side wall of the scraper 301, so as to reduce the abrasion of the rubber side wall of the scraper 301; a first through groove for the vibration piece to pass through is formed in the scraper 301, and a second through groove corresponding to the first through groove is formed in the first air bag 302; a first push plate 307 is arranged in the second cavity of the vertical section 301a, and the first push plate 307 is positioned at the top of the first air bag 302; a fixing plate 308 is arranged in the second cavity of the inclined section 301b, a second push plate 304 is movably connected to the fixing plate 308, the second push plate 304 is arranged at the bottom end of the second air bag 303, and a projection 3041 is arranged on the side wall of the second push plate 304.
When the stirring tank is placed for a period of time and then is reused, the stirring tank rotates to a state that the feed inlet faces downwards, the driving piece drives the stirring tank to rotate, the vibration piece discontinuously extends out of the second movable cavity, the vibration piece is inserted into the first through groove and then extrudes the inner wall of the second through groove, the inner wall of the second through groove is extruded to generate deformation due to the insertion of the vibration piece, the middle of the first air bag 302 expands upwards after being extruded, the first air bag 302 pushes the first push plate 307 to move upwards, the first push plate 307 moves upwards and supports the bottom of the lug 3041, the first push plate 307 pushes the second push plate 304 to move upwards, the second push plate 304 extrudes the second air bag 303 to expand and deform the second air bag 303, the expansion of the first air bag 302 and the expansion of the second air bag 303 is utilized to extrude the rubber side wall of the scraper 301, the expansion and deformation of the rubber side wall of the scraper 301 are enabled to drive the metal sheets 305 to be far away from each other, and the dried mortar attached to the side wall of the scraper 301 is enabled to be more convenient to clean the side wall of the scraper 301.
An end plate 3081 is arranged at one end of the fixed plate 308, a fifth through hole is arranged on the end plate 3081, a threaded rod 309 is rotatably connected in the fifth through hole, a threaded hole is arranged at the top of the second cavity of the inclined section 301b, and the threaded rod 309 penetrates through the threaded hole; when the stirring tank is normally used, the threaded rod 309 is rotated to enable the threaded rod 309 to move outwards the threaded hole, the end plate 3081 does not extrude the second air bag 303, the distance between the second push plate 304 and the first push plate 307 is increased, the first push plate 307 does not contact with the second push plate 304 when the vibration piece is inserted into the first through groove to enable the first air bag 302 to deform, the vibration piece impacts the inner wall of the stirring cavity to enable the inner wall of the stirring cavity to vibrate, and the cleaning effect in the stirring cavity is improved; when the agitator tank is placed for a period of time and is used again, rotate threaded rod 309 and make threaded rod 309 remove toward the second cavity, threaded rod 309 promotes end plate 3081 and removes and promotes second gasbag 303, second push plate 304 is close to toward first push plate 307 direction, vibrations piece makes second through-groove inner wall deformation when inserting first through-groove, first push plate 307 that promotes after first gasbag 302 expands removes, first push plate 307 supports and promotes second push plate 304 and remove on lug 3041, second push plate 304 extrudees second gasbag 303 and makes second gasbag 303 deformation, so that do the clearance to the mortar on the scraper blade 301 lateral wall.
An aluminum foil 306 is arranged between the adjacent metal sheets 305 on the scraper 301, the middle part of the aluminum foil 306 is bent towards the side wall direction of the scraper 301, and the aluminum foil 306 is used for sealing the gap between the metal sheets 305 to prevent mortar and broken mud from entering between the two metal sheets 305; when the rubber side wall of the scraper 301 is expanded and deformed, the two adjacent metal sheets 305 are away from each other, the aluminum foil 306 is stretched and then expanded outwards, mortar crumbs between the two metal sheets 305 are pushed out, mortar residues on the scraper 301 are reduced, and the cleaning effect on the scraper 301 is improved.
In another embodiment of the present application, a wet-mixed mortar doped with wet-process stone powder and having a strength grade of M15 is prepared, wherein the wet-mixed mortar is prepared from the following components in parts by weight: 12 parts of cement, 5 parts of mineral admixture, 7.5 parts of wet-process mountain flour (by mass except water), 65 parts of sand, 0.2 part of additive and 12.1 parts of water; the wet-process stone powder has a 45-micron screen residue of 10%, a 28d activity index of 67%, a loss on ignition of 2.1% and a density of 2.66g/cm 3 (ii) a The sand is machine-made sand with fineness modulus of 2.6; the additive is a retarding high-performance water reducing agent;
the preparation process of the wet-mixed mortar comprises the following steps:
s1, measuring the water content of wet-process stone powder to be 5.2% by adopting a sampling and drying method, and adjusting the construction mixing proportion of wet-mixed mortar according to the water content, namely changing the wet-process stone powder into 7.89 parts, changing the water into 12.49 parts, and keeping other materials unchanged;
s2, adding wet-process stone powder into stirring equipment according to the construction mixing proportion, stirring and dispersing the mud-cake-shaped wet-process stone powder for 3min at the speed of 25r/min, then adding sand, stirring and dispersing for 3min at the speed of 25r/min, adding water, and stirring and dispersing for 2min at the speed of 45 r/min;
s3, adding cement and mineral admixture into the mixture obtained in the step S2, stirring for 2min at the speed of 45r/min, and adding the admixture while stirring to enable the consistency of the wet-mixed mortar to be 90-110 mm;
and S4, discharging the mixed mortar from the stirring equipment, and cleaning the inner wall of the stirring equipment.
The prepared wet-mixed mortar has the consistency of 95mm, the water retention of 90 percent, the loss rate of the consistency of 2.1 percent in 2h and the compressive strength of 18.7MPa, and has good construction performance and mechanical performance meeting the requirements.
In another embodiment of the present application, a wet-mixed mortar doped with wet-process stone powder and having a strength grade of M205 is prepared, wherein the wet-mixed mortar is prepared by mixing the following components by weight: 14 parts of cement, 6 parts of mineral admixture, 7 parts of wet-process stone powder (except moisture), 68 parts of sand, 0.3 part of additive and 11.5 parts of water; the wet-process stone powder has a 45-micron screen residue of 9%, a 28d activity index of 68%, a loss on ignition of 2.2% and a density of 2.68g/cm 3 (ii) a The sand is machine-made sand with fineness modulus of 2.6; the additive is a retarding high-performance water reducing agent;
the preparation process of the wet-mixed mortar comprises the following steps:
s1, measuring the water content of wet-process stone powder to be 5.6% by adopting a sampling and drying method, and adjusting the construction mixing ratio of the wet-process mortar according to the water content, namely, the wet-process stone powder is changed into 7.392 parts, the water is changed into 11.108 parts, and other materials are not changed;
s2, adding wet-process stone powder into stirring equipment according to the construction mixing proportion, stirring and dispersing the mud-cake-shaped wet-process stone powder for 4min at the speed of 30r/min, then adding sand, stirring and dispersing for 4min at the speed of 25r/min, adding water, and stirring and dispersing for 3min at the speed of 45 r/min;
s3, adding cement and mineral admixture into the mixture obtained in the step S2, stirring for 2min at the speed of 60r/min, and adding the admixture while keeping the consistency of the wet-mixed mortar to be 90-110 mm;
and S4, discharging the mixed mortar from the stirring equipment, and cleaning the inner wall of the stirring equipment.
The prepared wet-mixed mortar has the consistency of 92mm, the water retention of 89%, the loss rate of the consistency of 2.45% in 2h and the compressive strength of 25.9MPa, and has good construction performance and mechanical performance meeting the requirements.
The wet-mixed mortar is prepared by using the cheap ground material which is rich in stone powder resources but has few application approaches, so that the production cost of the wet-mixed mortar is reduced, and the environment is protected; the water and the flocculating agent carried by the wet-process mountain flour are defects in other application technologies, but the invention fully utilizes the characteristics of the wet-process mountain flour, adopts simple and convenient process steps to disperse the wet-process mountain flour, and overcomes the adverse effect of the wet-process mountain flour on cement-based materials.
The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention in the embodiments of the present disclosure is not limited to the specific combinations of the above-mentioned features, and other embodiments in which the above-mentioned features or their equivalents are combined arbitrarily without departing from the spirit of the invention are also encompassed. For example, the above features and (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure are mutually replaced to form the technical solution.
Claims (10)
1. A wet-mixed mortar based on wet-process stone powder is characterized in that: comprises the following components: 8 to 15 portions of cement, 4 to 8 portions of mineral admixture, 5.5 to 10 portions of wet-process mountain flour, 62 to 71 portions of sand, 0.1 to 0.3 portion of additive and 11 to 15 portions of water.
2. The wet-mixed mortar based on wet-process mountain flour according to claim 1, wherein: the sand is machine-made sand or river sand with fineness modulus of 2.3-3.0.
3. The wet-mixed mortar based on wet-process mountain flour according to claim 1, wherein: the additive is a retarding high-performance water reducing agent.
4. A process for preparing wet-mix mortar based on wet-process stone dust according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
a. testing the water content of the wet-process stone powder by adopting a sampling and drying method rapid detector, and adjusting the construction mixing ratio of the wet-mixed mortar according to the water content;
b. adding wet-process stone powder into stirring equipment according to a construction mixing proportion, stirring and dispersing the mud-cake-shaped wet-process stone powder for 2-4 min at the speed of 20-30 r/min, then adding sand, stirring and dispersing for 2-4 min at the speed of 20-30 r/min, adding water, and stirring and dispersing for 1-3 min at the speed of 30-60 r/min;
c. c, adding cement and mineral admixture into the mixture obtained in the step b, stirring for 2-4 min at the speed of 30-60 r/min, and adding the admixture while stirring to enable the consistency of the wet-mixed mortar to be 90-110 mm;
d. discharging the mixed mortar from the stirring equipment, and cleaning the inner wall of the stirring equipment;
the stirring apparatus includes:
the stirring tank is configured to be provided with a stirring cavity for containing mortar;
the first connecting shaft penetrates through the stirring cavity;
the scraper is movably connected to the first connecting shaft;
the driving piece is used for driving the stirring tank to rotate relative to the first connecting shaft;
a mounting rack for supporting the agitator tank;
the stirring tank is rotatably connected to the mounting frame, and a feeding hole is formed in the stirring tank;
when the feed inlet is vertically upward, the scraper is disengaged from the inner wall of the stirring cavity; when the feed inlet is vertically downward, the scraper blade is contacted with the inner wall of the stirring cavity.
5. The method for preparing wet-mixed mortar based on wet-process mountain flour according to claim 4, wherein the method comprises the following steps: the stirring device further comprises:
the supporting frame is arranged on the mounting frame;
the second connecting shaft is arranged on the supporting frame;
the mounting frame is provided with a connecting hole for the second connecting shaft to pass through, and the second connecting shaft is arranged on the supporting frame.
6. The method for preparing wet-mixed mortar based on wet mountain flour according to claim 4, wherein the method comprises the following steps: the stirring device further comprises:
the connecting block is connected to the first connecting shaft;
the vibrating piece is discontinuously impacted on the inner wall of the stirring cavity to enable the side wall of the stirring cavity to vibrate; the scraper blade is arranged on the connecting block.
7. The method for preparing wet-mixed mortar based on wet-process mountain flour according to claim 6, wherein the method comprises the following steps: a separation cavity is arranged on the stirring tank, and a control piece used for pushing the scraper to move towards the direction far away from the inner wall of the stirring tank is arranged in the separation cavity.
8. The method for preparing wet-mixed mortar based on wet mountain flour according to claim 7, wherein the method comprises the following steps: the control part is provided with a plurality of thrust pieces used for pushing the vibrating piece to move towards the middle of the stirring cavity, and a gap exists between every two adjacent thrust pieces.
9. The method for preparing wet-mixed mortar based on wet-process mountain flour according to claim 7, wherein the method comprises the following steps: be equipped with first support ring and second support ring in dividing the chamber, the control piece is located first support ring with between the second support ring.
10. The method for preparing wet-mixed mortar based on wet-process mountain flour according to claim 4, wherein the method comprises the following steps: be equipped with first movable chamber on the connecting block, be equipped with the second connecting rod on the scraper blade, the second connecting rod is worn to locate first movable intracavity, first movable intracavity is equipped with supporting spring, and second connecting rod one end is equipped with the magnetic sheet, the control is made for magnetic material, the magnetic sheet magnetism with control magnetism repels each other.
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