CN115972386A

CN115972386A - Concrete production equipment capable of being screened in advance and used for layered mixing and mixing method thereof

Info

Publication number: CN115972386A
Application number: CN202211715743.8A
Authority: CN
Inventors: 朱胜龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-04-18

Abstract

The invention relates to the technical field of concrete production, in particular to concrete production equipment for carrying out layered mixing by screening in advance and a mixing method thereof. It is including a jar body and the stirring component of setting in the jar body, just jar body top is equipped with the feed inlet, jar body bottom is equipped with the discharge gate, jar body is including feeding portion, the feed inlet sets up in feeding portion, feeding portion bottom is provided with sieve material portion, be provided with screening subassembly in the sieve material portion. In the invention, the position and the size of the gap between the coarse materials are irregularly changed in the stirring process, so that the fine materials can fully and uniformly enter the gap and can be stirred together with the coarse materials after entering the gap.

Description

Concrete production equipment capable of being screened in advance and used for layered mixing and mixing method thereof

Technical Field

The invention relates to the technical field of concrete production, in particular to concrete production equipment for carrying out layered mixing by screening in advance and a mixing method thereof.

Background

The concrete producing apparatus is one kind of apparatus for mixing cement, aggregate, water, admixture, etc. in certain proportion into concrete mixture.

The existing equipment can mix cement and sand stone aggregate in advance, then water and an additive are injected for stirring, the purpose of premixing is to enable the cement and the sand stone aggregate to be in full contact before stirring, but the cement and the sand stone aggregate after mixing cannot avoid local accumulation of the cement, and at the moment, once the water is injected, the cement and the sand stone aggregate are agglomerated, and subsequent stirring is not convenient;

the reason for local accumulation of cement is that the sand aggregate forms more gaps, and the sand aggregate is difficult to uniformly flow into all the gaps in the mixing process, so that the cement can be locally accumulated, and the cement and the sand aggregate are difficult to uniformly mix by stirring in a short time.

Disclosure of Invention

The invention aims to provide concrete production equipment for carrying out layered mixing by screening in advance and a mixing method thereof, so as to solve the problems in the background technology.

In order to achieve the above purpose, one of the purposes of the present invention is to provide a concrete production device which is screened in advance and carries out layered mixing, comprising a tank body and a stirring component arranged in the tank body, wherein the top of the tank body is provided with a feed inlet, the bottom of the tank body is provided with a discharge outlet, the tank body comprises a feed part, the feed inlet is arranged on the feed part, the bottom of the feed part is provided with a screening part, a screening component is arranged in the screening part, coarse and fine materials entering the feed part are internally and externally layered through the screening component, the bottom of the screening part is provided with a mixing part, the bottom of the mixing part is provided with a stirring part, and the mixing part guides the layered fine materials into the stirring part;

and a stirring member is arranged in the stirring part, receives the coarse materials and stirs the coarse materials.

As a further improvement of this technical scheme, screening subassembly includes that inlayer material is first sieved hopper, inlayer material level sieve fill and outer material sieve fill, inlayer material is first sieved hopper, inlayer material level sieve fill and outer material sieve fill from top to bottom arrange in proper order in the sieve material portion, just the filtration pore diameter that inlayer material was first sieved hopper is greater than the filtration pore diameter that inlayer material level sieve was fought and outer material sieve was fought, the filtration pore diameter that inlayer material level sieve was fought will be greater than the filtration pore diameter that outer material sieve was fought, wherein:

the inner layer material primary screening hopper and the inner layer material secondary screening hopper mainly screen out inner layer coarse materials;

the materials passing through the outer layer material sieve hopper become outer layer fine materials, and the materials not passing through the outer layer material sieve hopper become inner layer coarse materials.

As a further improvement of the technical scheme, the radius of the leakage opening of the secondary screening bucket of the inner layer material is larger than that of the primary screening bucket of the inner layer material; the radius of the leakage opening of the outer-layer material screen bucket is larger than that of the leakage opening of the inner-layer material secondary screen bucket.

As a further improvement of the technical scheme, an inner extension pipe is arranged in the stirring part, an inner layer material guide pipe is arranged at the top of the inner extension pipe, and the outer diameter of the inner layer material guide pipe is smaller than that of the inner extension pipe;

an outer chamber and an inner chamber are formed in the stirring part under the isolation of the inner extension pipe, the outer chamber is positioned at the periphery of the inner extension pipe, the inner chamber is positioned in the inner extension pipe, the outer chamber is used for receiving outer-layer fine materials flowing out of the mixing part, and the inner chamber is used for receiving inner-layer coarse materials flowing out of the mixing part and stirring the coarse materials through a stirring member arranged in the inner chamber;

the outer wall of the inner extension pipe is provided with a reticular filter layer with the aperture smaller than that of the coarse material, so that the fine material in the outer cavity chamber enters the inner cavity chamber through the filter layer.

As a further improvement of the technical scheme, the stirring component comprises a supporting plate and a rotating shaft arranged at the top of the supporting plate, a driving motor is arranged at the bottom of the supporting plate, an output shaft of the driving motor is fixedly connected with the rotating shaft, the rotating shaft is rotated on the supporting plate under the action of the output shaft, a stirring end is arranged on the rotating shaft, and the rotating shaft drives the stirring end to stir materials in the inner cavity.

As a further improvement of the technical scheme, the stirring end comprises a stirring rod, a stirring plate and a discharging scraper, the stirring rod is arranged at the position above the filtering layer in the rotating shaft, the stirring plate is arranged at the position in the covering range of the filtering layer in the rotating shaft, and the discharging scraper is attached to the top surface of the supporting plate to be arranged.

As a further improvement of the technical scheme, a material guiding plate is arranged in the feeding part, and the cross section of the material guiding plate is of an arc-shaped structure protruding upwards.

As a further improvement of this technical scheme, still be provided with the feed divider group in the sieve material portion, the feed divider group is located the bottom of leak, the feed divider group comprises branch material sieve and material holding plate, divide the material sieve and the material holding plate is the heliciform setting, divide the material sieve to be located the material holding plate top, wherein:

fine materials which do not pass through the distributing sieve plate roll along the surface of the distributing sieve plate;

the fine materials passing through the material distributing sieve plate fall on the material bearing plate and roll on the surface of the material bearing plate.

As a further improvement of the technical scheme, an annular ring plate is arranged in the mixing part, the inner ring surface of the ring plate is attached to the inner layer material guide pipe, the outer ring surface of the ring plate is attached to the mixing part, and leakage grooves are formed in the inner side and the outer side of the ring plate to allow fine materials to pass through the ring plate.

It is a further object of the present invention to provide a mixing method for a concrete production plant for stratified mixing including a pre-screening as described in any one of the above, comprising the method steps of:

step one, external coarse and fine materials enter a feeding part through a feeding hole, the coarse and fine materials entering a screening part at this time fall on an inner layer material primary screening hopper firstly, the coarse and fine materials are screened out of the innermost coarse material of an inner layer after being filtered by the inner layer material primary screening hopper, and the screened coarse materials flow out through a bottom leakage opening of the inner layer material primary screening hopper;

step two, the rest coarse and fine materials fall into the inner-layer material secondary sieve hopper, are filtered by the inner-layer material secondary sieve hopper and then are sieved to obtain coarse materials on the middle side of the inner layer, and the sieved coarse materials flow out through a leakage opening at the bottom of the inner-layer material secondary sieve hopper;

step three, the rest materials fall to an outer layer material sieve hopper, coarse and fine materials falling on the outer layer material sieve hopper are sieved to obtain coarse materials at the outermost side of an inner layer, and the materials passing through the outer layer material sieve hopper directly form fine materials at the outer layer;

and step four, the stirring member in the stirring part receives and stirs the coarse materials in the inner layer, and the fine materials in the outer layer enter gaps among the coarse materials at the moment.

Compared with the prior art, the invention has the following beneficial effects:

1. in the concrete production equipment capable of realizing layering mixing and the mixing method thereof, coarse and fine materials entering the feeding part are layered inside and outside through the screening component, the layered fine materials are guided into the stirring part by the mixing part, the stirring part is internally provided with the stirring component, the stirring component directly receives the coarse materials and stirs the coarse materials, the position and the size of a gap between the coarse materials are randomly changed in the stirring process, the fine materials can fully and uniformly enter the gap at the moment, and the fine materials can be stirred together with the coarse materials after entering the gap, the utilization rate of the gap is greatly improved by the mixing mode, the fine materials can uniformly enter the gap, the fine materials are efficiently mixed with the coarse materials by virtue of the gap, the time for production can be shortened, and the efficiency is improved.

2. In the concrete production equipment for carrying out layered mixing and the mixing method thereof, coarse materials screened out in the screening part directly flow to the inner chamber through the inner layer material guide pipe and the inner layer material guide outlet at the bottom of the inner layer material guide pipe, so that a quick channel is provided for the coarse materials, the coarse materials quickly flow to the inner chamber for stirring and mixing, and the problem of insufficient mixing of the coarse materials does not need to be considered when fine materials are mixed in the later stage.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the overall structure of the present invention;

FIG. 3 is a schematic illustration of a screen assembly according to the present invention;

FIG. 4 is a structural exploded view of a screen assembly of the present invention;

FIG. 5 is a side view of the screen according to one embodiment of the present invention;

FIG. 6 is a schematic view of the internal structure of the screen section of the present invention;

FIG. 7 is a schematic view of a distributor plate assembly according to the present invention;

FIG. 8 is a side view of the screen of the present invention;

FIG. 9 is a schematic view of the mixing section of the present invention;

FIG. 10 is a top view of the ring plate structure of the present invention;

FIG. 11 is a sectional view showing the structure of a stirring section of the present invention;

FIG. 12 is a side sectional view of the stirring section of the present invention;

FIG. 13 is a schematic view of the stirring member of the present invention;

FIG. 14 is a side view of the feed section of the present invention;

fig. 15 is a side view of the overall structure of the present invention.

The various reference numbers in the figures mean:

100. a tank body; 100A, a feed inlet; 100B, a discharge hole;

110. a feeding section; 111. a fuse plate; 111A, a material guiding channel; 112. a screen material water injection pipe;

120. a material screening part;

130. a mixing section; 131. a ring plate; 131A, a leakage groove; 132. a wheel axle; 133. a vane plate;

140. a stirring section; 141. an inner layer material conduit; 141A and an inner layer material outlet; 142. extending the pipe inwards; 142a, a filter layer; 142A, an outer chamber; 142B, an inner chamber; 143. stirring the water injection pipe;

200. a screen assembly;

210. an inner layer material primary screening hopper; 220. the secondary screening bucket of the inner layer material; 230. an outer layer material screening hopper;

300. a stirring member; 310. a supporting plate; 310A, a discharge chute; 320. a rotating shaft; 321. a stirring rod; 322. a stirring plate; 323. a discharging scraper plate;

400. a material distribution plate group; 410. a material distributing sieve plate; 420. a material bearing plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Existing equipment can mix cement and sand stone aggregate in advance, then injected water and admixture stir, and the purpose of premixing can let cement and sand stone aggregate fully contact before the stirring, but cement and sand stone aggregate after mixing like this can avoid causing the local pile up of cement, and in this time in case injected water will be the caking, subsequent stirring of being not convenient for.

To this end, the present invention provides a concrete production apparatus for mixing in layers, which is screened in advance, as shown in fig. 1, and includes a tank 100 and a mixing member 300 disposed in the tank 100, and the tank 100 is provided with a feed inlet 100A at the top and a discharge outlet 100B at the bottom, and the present invention is different from the existing concrete production apparatus in that:

the tank body 100 comprises a feeding portion 110, a screening portion 120, a mixing portion 130 and a stirring portion 140, wherein the feeding portion 110, the screening portion 120, the mixing portion 130 and the stirring portion 140 are sequentially arranged from top to bottom, as shown in fig. 2, a screening assembly 200 is arranged in the screening portion 120 arranged at the bottom of the feeding portion 110, coarse and fine materials (where, the coarse materials include sand and stone aggregates and the fine materials include cement) entering the feeding portion 110 are internally and externally layered through the screening assembly 200, the mixing portion 130 guides the layered fine materials into the stirring portion 140, a stirring member 300 is arranged in the stirring portion 140, the stirring member 300 directly receives and stirs the coarse materials, the position and the size of gaps between the coarse materials are irregularly changed in the stirring process, the fine materials can fully and uniformly enter the gaps at the moment, and can be stirred together with the coarse materials after entering, the utilization rate of the gaps is greatly improved, the fine materials can uniformly enter the gaps, the fine materials can be mixed with the coarse materials, the gaps can be efficiently mixed with the coarse materials, and the production efficiency can be improved.

As described in fig. 1, the top of the feeding portion 110 is provided with a feeding hole 100A, the coarse and fine materials enter the feeding portion 110 through the feeding hole 100A, and then the bottom of the stirring portion 140 is provided with a discharging hole 100B, and the mixed coarse and fine materials are discharged through the discharging hole 100B.

Specific embodiments of the present invention are disclosed below by way of the following examples:

figures 3-5 and 11-15 show a first embodiment of the invention,

first, fig. 3 and fig. 4 disclose a screen assembly 200, in fig. 3, the screen assembly 200 is disposed in the screen portion 120 with a hollowed-out top and bottom, in fig. 4, the screen assembly 200 includes an inner-layer primary screen hopper 210, an inner-layer secondary screen hopper 220 and an outer-layer screen hopper 230, the inner-layer primary screen hopper 210, the inner-layer secondary screen hopper 220 and the outer-layer screen hopper 230 are sequentially arranged in the screen portion 120 from top to bottom, a filter aperture of the inner-layer primary screen hopper 210 is larger than filter apertures of the inner-layer secondary screen hopper 220 and the outer-layer screen hopper 230, and a filter aperture of the inner-layer secondary screen hopper 220 is larger than a filter aperture of the outer-layer screen hopper 230, wherein:

the inner layer material primary screening hopper 210 and the inner layer material secondary screening hopper 220 mainly screen out inner layer coarse materials;

the material passing through the outer material sieve hoppers 230 becomes the fine material of the outer layer, and the material not passing through becomes the coarse material of the inner layer.

Referring to fig. 5 again, the materials filtered by the inner primary sieve hopper 210, the inner secondary sieve hopper 220 and the outer sieve hopper 230 will continue to be layered in the inner layer, and the layering mode is from inside to outside, the particle size of the materials closer to the outer side is smaller, and finally the fine materials passing through the outer sieve hopper 230 form the outer layer independently.

It should be noted that, in order to avoid the influence of the leakage at the bottom of the secondary inner-layer material sieve hopper 220 on the material flowing out from the leakage at the bottom of the primary inner-layer material sieve hopper 210, in this embodiment, the radius of the leakage of the secondary inner-layer material sieve hopper 220 is set to be larger than the radius of the leakage of the primary inner-layer material sieve hopper 210; similarly, in order to avoid the influence caused by the material flowing out from the bottom orifice of the secondary outer layer material screen bucket 230 to the bottom orifice of the secondary inner layer material screen bucket 220, the radius of the orifice of the secondary outer layer material screen bucket 230 is larger than that of the orifice of the secondary inner layer material screen bucket 220 in the embodiment, so as to ensure that the coarse material in the inner layer can be further layered.

During specific work, external coarse and fine materials enter the feeding portion 110 through the feeding port 100A, at this time, the coarse and fine materials entering the screening portion 120 firstly fall on the inner layer material primary screening hopper 210, the coarse and fine materials are screened out of the coarse materials at the innermost side of the inner layer after being filtered by the inner layer material primary screening hopper 210, the screened coarse materials flow out through a bottom leakage opening of the inner layer material primary screening hopper 210, the rest coarse and fine materials fall on the inner layer material secondary screening hopper 220, the coarse and fine materials at the middle side of the inner layer are screened out after being filtered by the inner layer material secondary screening hopper 220, the screened coarse materials flow out through a bottom leakage opening of the inner layer material secondary screening hopper 220, at this time, the rest materials fall on the outer layer material screening hopper 230, the coarse and fine materials falling on the outer layer material screening hopper 230 are screened to obtain the coarse materials at the outermost side of the inner layer, and the materials passing through the outer layer material screening hopper 230 directly form the outer layer fine materials;

in addition, in this embodiment, the inclination angles of the filtering surfaces of the inner-layer material primary sieve hopper 210, the inner-layer material secondary sieve hopper 220 and the outer-layer material sieve hopper 230 are gradually increased (the inclination angle of the inner-layer material primary sieve hopper 210 is smaller than the inclination angle of the inner-layer material secondary sieve hopper 220, and the inclination angle of the inner-layer material secondary sieve hopper 220 is smaller than the inclination angle of the outer-layer material sieve hopper 230), so that the downward flow speed of the material to be sieved is increased, so that the coarse material sieved first and the coarse material sieved later synchronously flow out of the sieve portion 120 to enter the mixing portion 130, at this time, the stirring member 300 in the stirring portion 140 receives and stirs the coarse material in the inner layer, and at this time, the coarse material obtained by continuously layering in the inner layer can be fully mixed, and the positions and sizes of the gaps between the coarse materials in the mixing process are randomly changed, so that only the coarse material is really stirred, and the fine material does not need to be stirred, and only needs to gradually enter the gaps between the coarse material through the outer layer, and the gaps are mixed along with the changes of the positions and the sizes of the gaps, so that the gaps, the mixing quality of the coarse material is improved, and the mixing efficiency is also improved.

It should be noted that the material entering the feed inlet 100A is preferably a primary mix of coarse and fine materials, which is not intended to improve the quality of the mix, and the coarse and fine materials can enter the feed portion 110 at the same time, so that the coarse and fine materials can be formed at the same time, and once the coarse material is mixed with the fine material, the coarse material can enter the gap, further reducing the production time of the concrete.

On the basis of the above structure, fig. 13 discloses the stirring member 300, and before that, the stirring part 140 needs to be disclosed, as shown in fig. 11, an inner extension tube 142 is arranged inside the stirring part 140, the top of the inner extension tube 142 is provided with an opening, the outer edge of the bottom is fixedly connected with the inner wall of the stirring part 140, an inner chamber 142B formed inside the inner extension tube 142 is communicated with the discharge hole 100B, the top of the inner extension tube 142 is provided with an inner layer material conduit 141, and the outer diameter of the inner layer material conduit 141 is smaller than the outer diameter of the inner extension tube 142;

as shown in fig. 12, an outer chamber 142A and an inner chamber 142B are formed in the stirring portion 140 under the isolation of the inner extension tube 142, the outer chamber 142A is located at the periphery of the inner extension tube 142, the inner chamber 142B is located inside the inner extension tube 142, the outer chamber 142A is used for receiving outer-layer fine materials flowing out of the mixing portion 130, the inner chamber 142B is used for receiving inner-layer coarse materials flowing out of the mixing portion 130, the coarse materials are stirred by the stirring member 300 arranged in the inner chamber 142B, and then a mesh-shaped filter layer 142A with a pore size smaller than that of the coarse materials is arranged on the outer wall of the inner extension tube 142, so that the fine materials in the outer chamber 142A can enter the inner chamber 142B through the filter layer 142A in the process of stirring the coarse materials and then are mixed into gaps between the coarse materials.

It should be noted that the top of the inner material conduit 141 is located outside the outer material sieve bin 230, that is, the inner diameter of the inner material conduit 141 is required to be larger than the outer diameter of the bottom orifice of the outer material sieve bin 230, and the inner material conduit 141 penetrates through the mixing portion 130, as shown in fig. 15, so that the coarse material sieved in the material sieving portion 120 directly flows to the inner chamber 142B through the inner material conduit 141 and the inner material outlet 141A at the bottom of the inner material conduit 141, thereby providing a fast channel for the coarse material to rapidly flow into the inner chamber 142B for stirring and mixing, and the problem of insufficient mixing of the coarse material does not need to be considered in the later stage of mixing the fine material.

In fig. 13, the stirring member 300 includes a supporting plate 310 and a rotating shaft 320 disposed at the top of the supporting plate 310, the rotating shaft 320 is disposed at the center of the supporting plate 310, a driving motor is disposed at the bottom of the supporting plate 310, an output shaft of the driving motor is fixedly connected to the rotating shaft 320, the rotating shaft 320 rotates on the supporting plate 310 under the action of the output shaft, a stirring end is disposed on the rotating shaft 320, and the rotating shaft 320 drives the stirring end to stir the material in the inner chamber 142B.

The preferred fagging 310 sets up the arc structure that the cross section upwards stands to outstanding, provides the accommodation space for driving motor's installation on the one hand, and on the other hand avoids the material to pile up on the surface of fagging 310, because fagging 310 and stirring portion 140's inner wall fixed connection, supplies the material after the mixture to flow out through setting up blown down tank 310A in the periphery of fagging 310.

As for the stirring end, fig. 13 also discloses that the stirring end includes a stirring rod 321, a stirring plate 322 and a discharging scraper 323, the stirring rod 321 is disposed on the rotating shaft 320 and above the filter layer 142a, the stirring plate 322 is disposed on the rotating shaft 320 and within the coverage of the filter layer 142a, and the discharging scraper 323 is attached to the top surface of the supporting plate 310.

It is preferable that the stirring rods 321 and the stirring plates 322 are annularly arranged in two rows outside the rotating shaft 320, and not limited to two rows (three or more rows may be arranged according to actual conditions), and the stirring rods 321 and the stirring plates 322 in the two rows are arranged in a staggered manner.

When the mixer works, coarse materials screened by the inner-layer material primary screening hopper 210, the inner-layer material secondary screening hopper 220 and the outer-layer material screening hopper 230 directly fall into the inner-layer material guide pipe 141, directly pass through the mixing part 130 through the inner-layer material guide pipe 141, and are left in the inner chamber 142B through the inner-layer material guide port 141A, at this time, the rotating shaft 320 drives the stirring rod 321 to rotate under the driving of the output shaft of the driving motor, the rotating stirring rod 321 stirs the coarse materials, the staggered stirring rod 321 can improve the stirring quality, because a large amount of fine materials are not mixed in at this time, the effect of stacking is not needed to be considered, the stacking is needed to be considered by the stirring plate 322, so the stirring plate 322 is an inclined arc-shaped plate, the rotating stirring plate 322 needs to intercept a part of the coarse materials to reduce the downstream flow speed, the fine materials entering through the filtering layer 142a have enough time 323 to be mixed in the gap, and the final discharging scraper mainly plays a role of driving the mixed materials to quickly flow into the discharging groove 310A, and then be discharged from the discharging port 100B, and can play a certain stirring role at the same time;

and water and additives are introduced into the inner chamber 142B while stirring to produce concrete.

In addition, in order to prevent the coarse and fine materials entering the feed inlet 100A from directly flowing out through the leakage, the feed guiding plate 111 is arranged in the feed part 110 in fig. 14, and the cross section of the feed guiding plate 111 is of an arc structure protruding upwards, so that a feed guiding channel 111A can be formed between the top surface of the feed guiding plate 111 and the inner wall of the feed part 110, the coarse and fine materials are guided through the feed guiding channel 111A to fall on the periphery of the inner layer material primary screening hopper 210, on one hand, the leakage is avoided, on the other hand, the coarse and fine materials pass through the inner layer material primary screening hopper 210 in the largest range, and the utilization rate of the inner layer material primary screening hopper 210 is improved.

In this embodiment, no structure is provided in the mixing part 130 to stir the fine materials;

the material guide plate 111 is suspended in the material inlet portion 110 by a connecting plate or a connecting rod, and the inner layer material guide pipe 141 is also suspended by a connecting plate or a connecting rod.

Figures 12 and 14 also show a second embodiment of the invention,

in fig. 12, the stirring water injection pipe 143 is provided in the inner extension pipe 142, and the bottom of the inner layer material guide pipe 141 extends into the inner chamber 142B, so that the stirring water injection pipe 143 penetrates through the portion of the inner layer material guide pipe 141 extending into the inner chamber 142B, is fixedly connected to the inner layer material guide pipe 141 through the stirring water injection pipe 143, and then supports the inner layer material guide pipe 141 by the stirring water injection pipe 143;

in fig. 14, a water injection sieve pipe 112 is provided in the inlet part 110, and the water injection sieve pipe 112 is provided to penetrate the lead plate 111 so as to support the lead plate 111 through the water injection sieve pipe 112.

When the device is used, water and the additive are introduced into the sieve water injection pipe 112 and the stirring water injection pipe 143 and are sprayed out by the spray heads arranged on the sieve water injection pipe 112 and the stirring water injection pipe 143, and the spray head arranged on the sieve water injection pipe 112 is positioned in the coverage range of the leak opening, so that the coarse material is pre-wetted by the water and the additive sprayed out by the spray head on the sieve water injection pipe 112, the spray head arranged on the stirring water injection pipe 143 is positioned in the coverage range of the inner layer material guide outlet 141A, and the water and the additive are injected into the inner cavity 142B through the spray head on the stirring water injection pipe 143 for use during concrete production;

and the setting range of the spray head is limited to prevent the fine materials from contacting with water and the additive to agglomerate.

Figures 6-8 show a third embodiment of the invention,

in fig. 6, a material distributing plate group 400 is further arranged in the material sieving part 120, the material distributing plate group 400 is located at the bottom of the leakage opening, the material distributing plate group 400 in fig. 7 is composed of a material distributing screen plate 410 and a material bearing plate 420, the material distributing screen plate 410 and the material bearing plate 420 are both arranged in a spiral shape, the material distributing screen plate 410 is located at the top of the material bearing plate 420, the falling fine materials are sieved by the material distributing screen plate 410, the fine materials which do not pass through the material distributing screen plate 410 roll along the surface of the material distributing screen plate, and the fine materials which pass through the material bearing plate 420 roll on the surface of the material bearing plate 420, the spiral arrangement aims to enable the fine materials to roll on the material distributing screen plate 410 and the material bearing plate 420 under the action of self gravity, and an annular covering surface can be formed, so as to ensure that all the falling fine materials can be contacted.

The working principle is as follows:

the fine materials flowing down through the outer layer material hopper 230 fall on the distributing screen plate 410, and then are filtered by the distributing screen plate 410, the fine materials which cannot pass through the distributing screen plate 410 roll down to the lower end part of the distributing screen plate 410, the fine materials which pass through the distributing screen plate 410 roll down to the lower end part of the material bearing plate 420 on the material bearing plate 420, then 400a is formed at the lower end parts of the distributing screen plate 410 and the material bearing plate 420, and the rolled fine materials are crossed at the 400a, so that the mixed fine materials are more uniform, that is, the embodiment performs primary mixing in the falling process of the fine materials, and the coarse and fine materials obtained by final mixing are more uniform.

Figures 9 and 10 show a fourth embodiment of the invention,

in this embodiment, an annular ring plate 131 is disposed in the mixing portion 130, an inner annular surface of the ring plate 131 is attached to the inner material conduit 141, an outer annular surface of the ring plate 131 is attached to the mixing portion 130, and inner and outer sides of the ring plate 131 are both provided with a leakage groove 131A for fine material to pass through the ring plate 131;

in addition, a plurality of wheel shafts 132 are arranged on the ring plate 131 in an annular array, a plurality of impeller plates 133 are arranged outside the wheel shafts 132, a plurality of motors are arranged at the bottom of the ring plate 131, the output ends of the motors are connected with the wheel shafts 132 to drive the wheel shafts 132 and the ring plate 131 to rotate, the rotating wheel shafts 132 drive the impeller plates 133 to rotate, fine materials falling onto the ring plate 131 are further stirred through the impeller plates 133, the fine materials can be more uniform, and the fine materials on the ring plate 131 can be scraped into the leakage groove 131A by the impeller plates 133 in the rotating process.

In addition, after the material distributing plate group 400 is arranged in the material sieving part 120, the falling point of the fine material is fixed, so that the fine material cannot enter into the gap in multiple directions, at this time, the vane plates 133 are arranged to be in an arc-shaped structure, as shown in fig. 10, the arc-shaped end directions of two adjacent groups of vane plates 133 (the vane plates 133 on the same wheel shaft 132 are in one group) are different, the motor driving direction is the same as the arc-shaped end direction, and the two adjacent groups of vane plates 133 rotate in a staggered manner, so that the fine material mixed at the 400a position can be conducted by utilizing the vane plates 133, and then the fine material flows downwards through the leakage groove 131A to enable the falling point to be distributed more widely, and the fine material can enter into the gap in multiple directions.

And the centrifugal force generated during the rotation process can throw out the fine materials to avoid the fine materials from accumulating on the ring plate 131.

In addition, the falling speed of the fine materials can be delayed under the action of the ring plate 131 and the material distribution plate group 400, and the coarse materials can be fully mixed.

In addition, an annular opening can be formed between the outer wall and the inner wall of the inner extension pipe 142 after the bottom of the inner layer material guide pipe 141 extends into the inner chamber 142B, fine materials flowing out of the inner side leakage groove 131A can enter the inner chamber 142B through the annular opening to be mixed, and fine materials flowing out of the outer side leakage groove 131A enter the outer chamber 142A, so that the mixing efficiency is improved.

On the basis of the above embodiment, the invention also discloses a mixing method of concrete production equipment for carrying out layered mixing in advance screening, which comprises the following method steps:

step one, external coarse and fine materials enter a feeding part 110 through a feeding hole 100A, at this time, the coarse and fine materials entering a screening part 120 fall on an inner layer material primary screening hopper 210 firstly, after being filtered by the inner layer material primary screening hopper 210, coarse materials at the innermost side of an inner layer are screened out, and the screened coarse materials flow out through a leakage opening at the bottom of the inner layer material primary screening hopper 210;

step two, the rest coarse and fine materials fall to the inner-layer material secondary sieve hopper 220, are filtered by the inner-layer material secondary sieve hopper 220 and then are sieved to obtain coarse materials at the middle side of the inner layer, and the sieved coarse materials flow out through a leakage opening at the bottom of the inner-layer material secondary sieve hopper 220;

step three, the rest materials fall to the outer layer material sieve hopper 230 at this time, the coarse and fine materials falling on the outer layer material sieve hopper 230 are sieved to obtain coarse materials at the outermost side of the inner layer, and the materials passing through the outer layer material sieve hopper 230 directly form fine materials of the outer layer;

step four, the stirring member 300 in the stirring part 140 receives and stirs the coarse materials in the inner layer, and at this time, the fine materials in the outer layer enter the gaps between the coarse materials.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a concrete production equipment that carries out layering and mixing who sieves in advance, its includes jar body (100) and sets up stirring component (300) in jar body (100), just jar body (100) top is equipped with feed inlet (100A), jar body (100) bottom is equipped with discharge gate (100B), its characterized in that: the tank body (100) comprises a feeding portion (110), the feeding port (100A) is arranged on the feeding portion (110), a screening portion (120) is arranged at the bottom of the feeding portion (110), a screening assembly (200) is arranged in the screening portion (120), coarse and fine materials entering the feeding portion (110) are internally and externally layered through the screening assembly (200), a mixing portion (130) is arranged at the bottom of the screening portion (120), a stirring portion (140) is arranged at the bottom of the mixing portion (130), and the layered fine materials are guided into the stirring portion (140) by the mixing portion (130);

a stirring member (300) is arranged in the stirring part (140), and the stirring member (300) receives and stirs the coarse materials.

2. The pre-screened concrete layered mixing production plant according to claim 1, characterized in that: screening subassembly (200) are including inlayer material primary screen fill (210), inlayer material secondary screen fill (220) and outer material screen fill (230), inlayer material primary screen fill (210), inlayer material secondary screen fill (220) and outer material screen fill (230) are arranged from top to bottom in proper order in sieve material portion (120), just the filtration pore diameter of inlayer material primary screen fill (210) is greater than the filtration pore diameter of inlayer material secondary screen fill (220) and outer material screen fill (230), the filtration pore diameter of inlayer material secondary screen fill (220) will be greater than the filtration pore diameter of outer material screen fill (230), wherein:

the inner layer material primary screening hopper (210) and the inner layer material secondary screening hopper (220) mainly screen out inner layer coarse materials;

the material passing through the outer layer material screening hopper (230) becomes the fine material of the outer layer, and the material not passing through becomes the coarse material of the inner layer.

3. The pre-screened concrete layered mixing production plant according to claim 2, characterized in that: the radius of a leakage opening of the inner-layer material secondary screening hopper (220) is larger than that of a leakage opening of the inner-layer material primary screening hopper (210); the radius of the leakage opening of the outer-layer material screen bucket (230) is larger than that of the leakage opening of the inner-layer material secondary screen bucket (220).

4. The apparatus for producing concrete mixed in layers screened in advance according to claim 1, characterized in that: an inner extension pipe (142) is arranged in the stirring part (140), an inner layer material guide pipe (141) is arranged at the top of the inner extension pipe (142), and the outer diameter of the inner layer material guide pipe (141) is smaller than that of the inner extension pipe (142);

an outer chamber (142A) and an inner chamber (142B) are formed in the stirring part (140) under the isolation of the inner extension pipe (142), the outer chamber (142A) is positioned at the periphery of the inner extension pipe (142), the inner chamber (142B) is positioned inside the inner extension pipe (142), the outer chamber (142A) is used for receiving outer-layer fine materials flowing out of the mixing part (130), the inner chamber (142B) is used for receiving inner-layer coarse materials flowing out of the mixing part (130), and the coarse materials are stirred by a stirring member (300) arranged in the inner chamber (142B);

the outer wall of the inner extension pipe (142) is provided with a reticular filter layer (142A) with the aperture smaller than that of the coarse material, so that the fine material in the outer chamber (142A) enters the inner chamber (142B) through the filter layer (142A).

5. The pre-screened concrete layered mixing production plant according to claim 4, characterized in that: stirring member (300) includes fagging (310) and sets up pivot (320) at fagging (310) top, the bottom of fagging (310) is provided with driving motor, and driving motor's output shaft and pivot (320) fixed connection make pivot (320) rotate on fagging (310) under the effect of output shaft, be provided with the stirring end on pivot (320), the pivoted pivot (320) drive the stirring end and stir the material in interior chamber (142B).

6. The pre-screened concrete layered mixing production plant according to claim 5, characterized in that: the stirring end includes puddler (321), stirring board (322) and row material scraper blade (323), puddler (321) set up the position that lies in filter layer (142 a) top on pivot (320), stirring board (322) set up the position that lies in filter layer (142 a) coverage on pivot (320), row material scraper blade (323) then laminate in fagging (310) top surface and set up.

7. The pre-screened concrete layered mixing production plant according to claim 1, characterized in that: a material guiding plate (111) is arranged in the feeding portion (110), and the cross section of the material guiding plate (111) is of an arc-shaped structure protruding upwards.

8. The pre-screened concrete layered mixing production plant according to claim 2, characterized in that: still be provided with distribution plate group (400) in sieve material portion (120), distribution plate group (400) are located the bottom of leak, distribution plate group (400) comprise branch material sieve board (410) and material-holding plate (420), divide material sieve board (410) and material-holding plate (420) to be the heliciform setting, divide material sieve board (410) to be located material-holding plate (420) top, wherein:

fine material that does not pass through the dividing screen deck (410) rolls along its surface;

the fine materials passing through the distributing sieve plate (410) fall on the material bearing plate (420) and roll on the surface of the material bearing plate (420).

9. The pre-screened concrete layered mixing production plant according to claim 1, characterized in that: an annular ring plate (131) is arranged in the mixing part (130), the inner ring surface of the ring plate (131) is attached to the inner layer material guide pipe (141), the outer ring surface of the ring plate (131) is attached to the mixing part (130), and leakage grooves (131A) are formed in the inner side and the outer side of the ring plate (131) respectively to allow fine materials to pass through the ring plate (131).

10. A mixing method for a previously screened concrete mixing plant for layered mixing according to any one of claims 1 to 9, characterised in that it comprises the following method steps:

step one, external coarse and fine materials enter a feeding part (110) through a feeding hole (100A), at this time, the coarse and fine materials entering a screening part (120) firstly fall on an inner layer material primary screening hopper (210), after being filtered by the inner layer material primary screening hopper (210), coarse materials at the innermost side of an inner layer are screened out, and the screened coarse materials flow out through a leakage opening at the bottom of the inner layer material primary screening hopper (210);

step two, the rest coarse and fine materials fall into an inner-layer material secondary screen hopper (220), are filtered by the inner-layer material secondary screen hopper (220) and then are screened out to obtain coarse materials on the middle side of the inner layer, and the screened coarse materials flow out through a leakage opening at the bottom of the inner-layer material secondary screen hopper (220);

step three, the rest materials fall to an outer layer material screening hopper (230), coarse materials and fine materials falling on the outer layer material screening hopper (230) are screened to obtain coarse materials on the outermost side of an inner layer, and the materials passing through the outer layer material screening hopper (230) directly form outer layer fine materials;

and step four, the stirring member (300) in the stirring part (140) receives and stirs the coarse materials on the inner layer, and the fine materials on the outer layer enter gaps among the coarse materials at the moment.