CN115351910B

CN115351910B - Preparation method of artificial sand composite concrete

Info

Publication number: CN115351910B
Application number: CN202211000538.3A
Authority: CN
Inventors: 郭春风; 吴冠希
Original assignee: Zhuhai Zhenye Concrete Co ltd
Current assignee: Zhuhai Zhenye Concrete Co ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2023-08-01
Anticipated expiration: 2042-08-19
Also published as: CN115351910A

Abstract

The invention discloses a preparation method of artificial sand composite concrete, which comprises the following steps: s1, separating artificial sand, adding the artificial sand into a feed hopper, dropping the artificial sand into a sand separating cylinder, and driving a rack to rotate by a hydraulic cylinder; s2, mixing cement paste, injecting quantitative water into the mixing chamber from a water inlet, and enabling cement to enter the mixing chamber through a conveying pipe by rotating a first auger; s3, dry mixing aggregate, wherein sand grains fall into the mixing cylinder along the vibrating screen plate and the first feeding pipe, and crushed stone is added into the mixing cylinder from the second feeding pipe; s4, preparing concrete, wherein cement slurry is input into the mixing cylinder from the separation box through the communicating pipe by rotating the second auger. According to the preparation method of the artificial sand composite concrete, the sand separation cylinder is utilized to rotate, sand grains and stone powder are separated, the stirring rod is driven to rotate by the rotating shaft, cement slurry in the mixing chamber is stirred, the stone powder is used as a gel material to participate in proportioning, and the sensor on the stirring rod detects the consistency of cement slurry, so that the cement dosage is automatically adjusted according to the stone powder content.

Description

Preparation method of artificial sand composite concrete

Technical Field

The invention relates to the technical field related to building materials, in particular to a preparation method of artificial sand composite concrete.

Background

Concrete, abbreviated as "concrete": refers to the collective term for engineering composite materials in which aggregate is consolidated into a whole by a cementitious material. The term concrete generally refers to cement as a cementing material, sand and stone as aggregate; the cement concrete, also called ordinary concrete, obtained by mixing the cement concrete with water (which can contain additives and admixtures) according to a certain proportion is widely applied to civil engineering.

The sand for concrete is divided into natural sand and artificial sand, the artificial sand is made from rock through soil removal exploitation, mechanical crushing and screening, the nominal grain diameter is smaller than 5.00mm, the artificial sand has more grain shape edges and corners, the surface is rough and not smooth, the powder content is larger, and a certain amount of stone powder is generated in the artificial sand production process, which is one of the most obvious differences between the artificial sand and the natural sand.

At present, stone powder and artificial sand are generally used as fine aggregates in a conventional preparation method, but in practical production application, the stone powder content in the artificial sand fluctuates greatly, and the quality of mixed concrete can be influenced by using a fixed gel material proportion.

Disclosure of Invention

The invention provides a preparation method of artificial sand composite concrete for making up market blank.

The invention aims to provide a preparation method of artificial sand composite concrete, which aims to solve the problems that stone powder and artificial sand are generally used as fine aggregates in the conventional preparation method, but in actual production application, the stone powder content in the artificial sand fluctuates greatly, and the quality of mixed concrete is affected by using a fixed gel material proportion.

In order to achieve the above purpose, the present invention provides the following technical solutions: the preparation method of the artificial sand composite concrete comprises the following steps:

s1, separating artificial sand, namely adding the artificial sand into a feed hopper, dropping the artificial sand into a sand separating cylinder, driving a rack by a hydraulic cylinder to enable the sand separating cylinder to rotate, enabling stone powder to fall into a mixing chamber through a screen, and dispersing sand on a vibrating screen plate through an opening;

s2, mixing cement paste, injecting quantitative water into the mixing chamber from a water inlet, enabling cement to enter the mixing chamber through a conveying pipe by rotation of a first auger, and driving an agitating rod to rotate by a rotating shaft to agitate to form cement paste;

s3, dry-mixing aggregate, wherein sand grains fall into a mixing drum along the vibrating screen plate and the first feeding pipe, crushed stone is added into the mixing drum from the second feeding pipe, and a stirring shaft drives stirring blades to stir so as to obtain mixed aggregate;

s4, preparing concrete, namely rotating the second auger to enable cement slurry to be input into the mixing drum from the separating box through the communicating pipe, and stirring the cement slurry and mixed aggregate to form composite concrete.

Further, the concrete preparation device comprises:

the middle part of a top plate of the separation box is fixed with a feed hopper, the front plate and the rear plate of the separation box are welded with slide rails, and the left plate and the right plate of the separation box are provided with sand discharge openings;

the mixing drums are distributed symmetrically about the separation box, a top plate of each mixing drum is connected with a first feeding pipe and a second feeding pipe, and a discharge port is formed in the bottom end of the side wall of each mixing drum;

the two ports of the communicating pipe are respectively communicated with the separating box and the mixing drum, a second auger is arranged in the communicating pipe, and a pipe valve is arranged at the port of the communicating pipe;

the sand separating cylinder is provided with a fixing ring in a surrounding mode, the bottom end of the sand separating cylinder penetrates through the vibrating screen plate, the inner wall of the sand separating cylinder is welded with a connecting plate, and the other end of the connecting plate is connected with the arc plate;

the vibrating screen plate separates the inner space of the separation box to form a sand chamber and a mixing chamber, a vibrating rod is transversely inserted below the vibrating screen plate, and two ends of the vibrating rod penetrate out of the separation box;

the two ends of the rotating shaft are rotatably connected with the second stirring motor, the rotating shaft penetrates through the fixed plate, and the sensor is embedded on the outer surface of the rotating shaft;

the hydraulic cylinder is placed on the sliding rail and is connected with the rack in a sliding mode through the telescopic rod, and the rack is meshed with the fixed ring.

Further, the feeder hopper is located the sand separation section of thick bamboo directly over, the separator box front side of slide rail below is equipped with charge door and filler, the conveyer pipe is inserted to the separator box rear side below the slide rail, conveyer pipe internally mounted has first auger, charge door, filler and conveyer pipe intercommunication compounding room.

Further, the left side and the right side of the mixing chamber are welded with fixing plates on the inner wall of the separation box, the fixing plates are of an obtuse angle structure, and a second stirring motor is fixed between the fixing plates and the separation box.

Further, the sand discharge port is aimed at to the last port of first inlet pipe, first inlet pipe with place first agitator motor on the churn between the second inlet pipe, the bottom of first agitator motor rotates and connects the (mixing) shaft, be fixed with the stirring leaf on the (mixing) shaft.

Further, the communicating pipe is L-shaped, a driving motor is clamped between the communicating pipe and the communicating pipe, the driving motor is rotationally connected with the second auger, and a pipe valve is installed at the connecting part of the communicating pipe and the separation box.

Further, an opening is formed in the sand separating cylinder at the upper side of the fixing ring, a screen is arranged on the inner ring surface of the fixing ring, teeth are arranged on the outer ring wall of the fixing ring, an arc plate and a connecting plate are arranged on the upper surface of the screen, and a gap is reserved between every two adjacent arc plates.

Further, the vibrating screen plate is lapped on the vibrating rod, one end of the vibrating rod is connected with the vibrating motor, and the vibrating screen plate inclines towards the sand discharge port.

Further, an agitating rod is arranged on the rotating shaft between the fixing plates, a sensor is fixed at the junction of the rotating shaft and the agitating rod, and the axis of the rotating shaft is coaxial with the center of the bottom plate of the separation box.

Compared with the prior art, the invention has the beneficial effects that: according to the preparation method of the artificial sand composite concrete, a sand separating cylinder is utilized to rotate, sand grains in the artificial sand are separated from stone powder, a rotating shaft is utilized to drive an agitating rod to rotate, cement slurry in a mixing chamber is stirred, the stone powder is used as a gel material to participate in proportioning, a sensor on the agitating rod detects the consistency of cement slurry, the cement consumption is automatically adjusted according to the stone powder content, a vibrating screen plate is utilized to carry out secondary treatment on the separated sand grains, and the mud ash adhered to the surface of the sand grains is reduced;

1. the sand separating cylinder is arranged in the separating box, so that flying dust generated by artificial sand separation is reduced, and the bottom of the separating box is of an arc-shaped structure, so that stirring dead angles are avoided;

2. the telescopic rod is driven by a hydraulic cylinder on the sliding rail, and pulls the rack to reciprocate along the sliding rail, so that the rack drives the sand separating cylinder to rotate, and sand and stone powder are separated by centrifugal force generated by rotation;

3. the arc plate and the connecting plate in the device are combined to form a labyrinth channel structure, so that the moving path and time of the artificial sand are prolonged, and the separation effect is improved.

Drawings

FIG. 1 is a flow chart of the present invention;

FIG. 2 is a schematic elevational view of the structure of the present invention;

FIG. 3 is a schematic elevational cross-sectional view of the structure of the present invention;

FIG. 4 is a schematic top cross-sectional view of the structure of the present invention;

fig. 5 is a schematic side cross-sectional view of the structure of the present invention.

In the figure: 1. a separation box; 2. a mixing drum; 3. a communicating pipe; 4. a sand separating cylinder; 5. vibrating the screen plate; 6. a rotating shaft; 7. a hydraulic cylinder; 11. a feed hopper; 12. a slide rail; 13. a feed inlet; 14. a water inlet; 15. a delivery tube; 16. a first auger; 17. a sand chamber; 18. a mixing chamber; 19. a fixing plate; 21. a first feed tube; 22. a second feed tube; 23. a discharge port; 24. a first stirring motor; 25. a stirring shaft; 26. stirring the leaves; 31. a second auger; 32. a tube valve; 33. a driving motor; 41. a fixing ring; 42. an arc plate; 43. a screen; 44. a connecting plate; 45. an opening; 51. a vibrating rod; 52. a sand discharge port; 61. an agitating rod; 62. a sensor; 63. a second stirring motor; 71. a rack; 72. a telescopic rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The first embodiment is as follows: referring to fig. 1-5, the present invention provides a technical solution: the preparation method of the artificial sand composite concrete comprises the following steps:

s1, separating artificial sand, wherein the artificial sand is added into a feed hopper 11, falls into a sand separating cylinder 4, a hydraulic cylinder 7 drives a rack 71 to enable the sand separating cylinder 4 to rotate, stone powder falls into a mixing chamber 18 through a screen 43, and sand grains are dispersed on a vibrating screen plate 5 through an opening 45;

s2, mixing cement paste, injecting quantitative water into the mixing chamber 18 from the water inlet 14, rotating the first auger 16 to enable cement to enter the mixing chamber 18 through the conveying pipe 15, and driving the stirring rod 61 to rotate by the rotating shaft 6 to stir to form cement paste;

s3, dry-mixing aggregate, wherein sand grains fall into the mixing drum 2 along the vibrating screen plate 5 and the first feeding pipe 21, crushed stone is added into the mixing drum 2 from the second feeding pipe 22, and the stirring shaft 25 drives the stirring blades 26 to stir so as to obtain mixed aggregate;

s4, concrete preparation, namely, rotating the second auger 31 to enable cement slurry to be input into the mixing drum 2 from the separation box 1 through the communicating pipe 3, and stirring the cement slurry and mixed aggregate to form composite concrete.

The second embodiment is as follows: this embodiment is a further limitation of the first embodiment, and as shown in fig. 1, 3 and 4, includes a concrete preparation apparatus:

the separating box 1, the middle part of the top plate of the separating box 1 is fixed with a feed hopper 11, the front and rear plates of the separating box 1 are welded with slide rails 12, and the left and right plates of the separating box 1 are provided with sand discharge openings 52;

the mixing drums 2 are distributed symmetrically about the separation box 1, a top plate of the mixing drum 2 is connected with a first feeding pipe 21 and a second feeding pipe 22, and a discharge port 23 is formed in the bottom end of the side wall of the mixing drum 2;

the two ports of the communicating pipe 3 are respectively communicated with the separation tank 1 and the mixing drum 2, a second auger 31 is arranged in the communicating pipe 3, and a pipe valve 32 is arranged at the port of the communicating pipe 3;

the sand separating cylinder 4, the outside of the sand separating cylinder 4 is surrounded by a fixed ring 41, the bottom end of the sand separating cylinder 4 penetrates through the vibrating screen plate 5, the inner wall of the sand separating cylinder 4 is welded with a connecting plate 44, and the other end of the connecting plate 44 is connected with an arc plate 42;

the vibrating screen plate 5, the vibrating screen plate 5 separates the inner space of the separating box 1 to form a sand chamber 17 and a mixing chamber 18, a vibrating rod 51 is transversely inserted below the vibrating screen plate 5, and two ends of the vibrating rod 51 penetrate out of the separating box 1;

the rotating shaft 6, two ends of the rotating shaft 6 are rotatably connected with the second stirring motor 63, the rotating shaft 6 penetrates through the fixed plate 19, and the sensor 62 is embedded on the outer surface of the rotating shaft 6;

and the hydraulic cylinder 7, the hydraulic cylinder 7 is placed on the slide rail 12, the hydraulic cylinder 7 is connected with the rack 71 in a sliding way through the telescopic rod 72, and the rack 71 is meshed with the fixed ring 41.

When the concrete preparation device is used, artificial sand is poured into the feed hopper 11, the artificial sand falls down into a cylinder surrounded by the inner arc plate 42, the hydraulic cylinder 7 drives the rack 71 to move through the telescopic rod 72, the rack 71 moves back and forth along the sliding rail 12, the rack 71 drives the sand separating cylinder 4 to rotate through the fixed ring 41, sand grains in the cylinder move to the outer layer through the opening 45, stone powder falls down into the mixing chamber 18 through the screen 43, quantitative water is added inwards from the water adding port 14, the second stirring motor 63 drives the rotating shaft 6 to rotate, the stirring rod 61 rotates the mixing water and the stone powder, cement is added into the mixing chamber 18 through the first auger 16 at the moment, cement paste is formed by mixing, the sensor 62 detects the consistency of the cement paste, when the consistency reaches a preset value, the first auger 16 stops conveying, additives are continuously stirred and mixed by inwards adding from the feed port 13, the sand grains outwards fall onto the vibrating screen 5, the sand grains move to the sand discharging port 52 along the inclined vibrating screen 5, the sand grains enter the mixing cylinder 2 through the first feed pipe 21, the crushed stone is added into the mixing cylinder 2 from the second feed pipe 22, the mixing motor 24 is rotated by the first feed pipe 24, the first feed pipe 24 rotates the mixing drum 25, the cement paste is driven by the first feed pipe 25, the mixing drum is rotated, the cement paste is formed by the mixing drum is rotated, the cement paste is mixed by the mixing drum 32, and the cement paste is formed by the mixing cement paste is rotated, the cement paste is mixed by the mixing drum, when the cement paste is mixed by the cement, and the cement, the cement paste is mixed, and the cement is mixed.

And a third specific embodiment: in this embodiment, as shown in fig. 3, the feeding hopper 11 is located right above the sand separating cylinder 4, the front side of the separating box 1 below the sliding rail 12 is provided with the feeding port 13 and the water adding port 14, the rear side of the separating box 1 below the sliding rail 12 is inserted with the conveying pipe 15, the conveying pipe 15 is internally provided with the first auger 16, the feeding port 13, the water adding port 14 and the conveying pipe 15 are communicated with the mixing chamber 18, the feeding port 13, the water adding port 14 and the conveying pipe 15 are respectively used for adding additive, water and cement, and the directions of the feeding port 13 and the water adding port 14 are opposite, so that solid and liquid injection are convenient and distinguishing is convenient.

The specific embodiment IV is as follows: in this embodiment, for further limitation of the third embodiment, the inner walls of the separation boxes 1 at the left and right sides of the mixing chamber 18 are welded with fixing plates 19, the fixing plates 19 are in an obtuse angle structure, a second stirring motor 63 is fixed between the fixing plates 19 and the separation boxes 1, the top surfaces of the fixing plates 19 are inclined to reduce accumulation, materials slide down conveniently, and a control device is installed in a space between the fixing plates 19 and the separation boxes 1.

Fifth embodiment: this embodiment is further limited to the second embodiment, as shown in fig. 2, 3 and 4, the upper port of the first feeding pipe 21 is aligned with the sand discharge port 52, the first stirring motor 24 is disposed on the mixing drum 2 between the first feeding pipe 21 and the second feeding pipe 22, the bottom end of the first stirring motor 24 is rotatably connected to the stirring shaft 25, and the stirring blade 26 is fixed on the stirring shaft 25.

Specific embodiment six: the second embodiment is further defined in the second embodiment, the communicating pipe 3 has an L-shaped structure, the driving motor 33 is clamped between the communicating pipe 3 and the communicating pipe 3, the driving motor 33 is rotationally connected with the second auger 31, the pipe valve 32 is installed at the connection part of the communicating pipe 3 and the separation tank 1, and the communicating pipe 3 is used for conveying cement slurry.

Seventh embodiment: in this embodiment, for further limitation of the second embodiment, the sand separating cylinder 4 on the upper side of the fixing ring 41 is provided with an opening 45, the inner ring surface of the fixing ring 41 is provided with a screen 43, the outer ring wall of the fixing ring 41 is provided with teeth, the upper surface of the screen 43 is provided with an arc plate 42 and a connecting plate 44, a gap is reserved between the adjacent arc plates 42, and the arc plate 42 and the connecting plate 44 separate the inner space of the sand separating cylinder 4 to form a tortuous path, so that the processing time of the artificial sand is prolonged.

Eighth embodiment: this embodiment is further limited to the second embodiment, as shown in fig. 3, the vibrating screen plate 5 is lapped on the vibrating rod 51, one end of the vibrating rod 51 is connected with the vibrating motor, the vibrating screen plate 5 is inclined toward the sand discharge opening 52, the sand grains passing through the vibrating screen plate 5 collide with each other, the acting force of the sand grains is increased, and the attachments on the sand grains are reduced.

Detailed description nine: in this embodiment, as shown in fig. 3 and 5, the stirring rod 61 is mounted on the rotation shaft 6 between the fixing plates 19, the sensor 62 is fixed at the junction of the rotation shaft 6 and the stirring rod 61, the axis of the rotation shaft 6 is coaxial with the center of the bottom plate of the separation tank 1, the rotation shaft 6 is matched with the bottom of the separation tank 1, and the stirring rods 61 are mutually crossed, so that stirring is more uniform.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The preparation method of the artificial sand composite concrete is characterized by comprising the following steps of:

s1, separating artificial sand, wherein the artificial sand is added into a feed hopper (11), falls into a sand separating cylinder (4), a hydraulic cylinder (7) drives a rack (71) to enable the sand separating cylinder (4) to rotate, stone powder falls into a mixing chamber (18) through a screen (43), and sand grains are dispersed on a vibrating screen plate (5) through an opening (45);

the feeding hopper (11) is positioned right above the sand separating cylinder (4), a feed inlet (13) and a water adding port (14) are arranged on the front side of the separating box (1) below the sliding rail (12), a conveying pipe (15) is inserted into the rear side of the separating box (1) below the sliding rail (12), a first auger (16) is arranged in the conveying pipe (15), and the feed inlet (13), the water adding port (14) and the conveying pipe (15) are communicated with the mixing chamber (18); the inner walls of the separation box (1) at the left side and the right side of the mixing chamber (18) are welded with fixing plates (19), the fixing plates (19) are of an obtuse angle structure, and a second stirring motor (63) is fixed between the fixing plates (19) and the separation box (1);

s2, mixing cement paste, injecting quantitative water into a mixing chamber (18) from a water adding port (14), enabling cement to enter the mixing chamber (18) through a conveying pipe (15) by rotating a first auger (16), and stirring by rotating a stirring rod (61) driven by a rotating shaft (6) to form cement paste;

s3, dry mixing aggregate, wherein sand grains fall into the mixing drum (2) along the vibrating screen plate (5) and the first feeding pipe (21), crushed stone is added into the mixing drum (2) from the second feeding pipe (22), and the stirring shaft (25) drives the stirring blades (26) to stir so as to obtain mixed aggregate;

s4, preparing concrete, namely, rotating a second auger (31) to enable cement slurry to be input into a mixing drum (2) from a separation box (1) through a communicating pipe (3), and stirring the cement slurry and mixed aggregate to form composite concrete;

the concrete preparation device comprises the following components:

the sand removing device comprises a separation box (1), wherein a feed hopper (11) is fixed in the middle of a top plate of the separation box (1), sliding rails (12) are welded on front and rear plates of the separation box (1), and sand removing openings (52) are formed in left and right plates of the separation box (1);

the mixing drums (2) are symmetrically distributed on the left and right sides of the separation box (1), a first feeding pipe (21) and a second feeding pipe (22) are connected to the top plate of the mixing drum (2), and a discharge port (23) is formed in the bottom end of the side wall of the mixing drum (2);

the two ports of the communicating pipe (3) are respectively communicated with the separation tank (1) and the mixing drum (2), a second auger (31) is arranged in the communicating pipe (3), and a pipe valve (32) is arranged at the port of the communicating pipe (3);

the sand separating device comprises a sand separating cylinder (4), wherein a fixing ring (41) is arranged around the outer side of the sand separating cylinder (4), the bottom end of the sand separating cylinder (4) penetrates through a vibrating screen plate (5), a connecting plate (44) is welded on the inner wall of the sand separating cylinder (4), and the other end of the connecting plate (44) is connected with an arc plate (42);

the vibrating screen plate (5), wherein the vibrating screen plate (5) separates the inner space of the separation box (1) to form a sand chamber (17) and a mixing chamber (18), a vibrating rod (51) is transversely inserted below the vibrating screen plate (5), and two ends of the vibrating rod (51) penetrate out of the separation box (1);

the two ends of the rotating shaft (6) are rotatably connected with a second stirring motor (63), the rotating shaft (6) penetrates through the fixed plate (19), and a sensor (62) is embedded on the outer surface of the rotating shaft (6);

the hydraulic cylinder (7), the hydraulic cylinder (7) is placed on slide rail (12), the hydraulic cylinder (7) is connected with rack (71) through telescopic link (72) sliding, rack (71) meshes with solid fixed ring (41).

2. The method for preparing artificial sand composite concrete according to claim 1, wherein the method comprises the following steps: the upper port of the first feeding pipe (21) is aligned to the sand discharge port (52), a first stirring motor (24) is arranged on the mixing drum (2) between the first feeding pipe (21) and the second feeding pipe (22), the bottom end of the first stirring motor (24) is rotationally connected with a stirring shaft (25), and stirring blades (26) are fixed on the stirring shaft (25).

3. The method for preparing artificial sand composite concrete according to claim 1, wherein the method comprises the following steps: the connecting pipe (3) is of an L-shaped structure, a driving motor (33) is clamped between the connecting pipe (3) and the connecting pipe (3), the driving motor (33) is rotationally connected with a second auger (31), and a pipe valve (32) is installed at the connecting part of the connecting pipe (3) and the separation box (1).

4. The method for preparing artificial sand composite concrete according to claim 1, wherein the method comprises the following steps: an opening (45) is formed in the sand separating cylinder (4) on the upper side of the fixed ring (41), a screen (43) is arranged on the inner ring surface of the fixed ring (41), teeth are arranged on the outer ring wall of the fixed ring (41), an arc plate (42) and a connecting plate (44) are arranged on the upper surface of the screen (43), and a gap is reserved between every two adjacent arc plates (42).

5. The method for preparing artificial sand composite concrete according to claim 1, wherein the method comprises the following steps: the vibrating screen plate (5) is lapped on the vibrating rod (51), one end of the vibrating rod (51) is connected with the vibrating motor, and the vibrating screen plate (5) inclines towards the sand discharge opening (52).

6. The method for preparing artificial sand composite concrete according to claim 1, wherein the method comprises the following steps: the stirring rod (61) is arranged on the rotating shaft (6) between the fixing plates (19), a sensor (62) is fixed at the junction of the rotating shaft (6) and the stirring rod (61), and the axis of the rotating shaft (6) is coaxial with the center of the bottom plate of the separation box (1).