Device for preparing superfine sand by secondary distribution and shaping

Abstract

A device for preparing superfine sand by secondary distribution and shaping, comprising a feeding system, a distribution and shaping system, a screening system, a storage system and a dust removal system, the feeding system is used for storing and conveying raw materials to the distribution and shaping system; the distribution and shaping system distributes and crushes the entering raw materials, comprising a first distribution valve connected with the feeding system, a first elevator connected with the first distribution valve, a crusher used for crushing the raw materials and a second elevator connected between the first distribution valve and the crusher; the screening system screens the entering raw materials to obtain fine sand and superfine sand, comprising a screening mechanism connected with the first elevator and the crusher respectively and a second distribution valve connected with the screening mechanism; the storage system comprises a first storage tank used for storing the superfine sand and a second storage tank connected with the second distribution valve and used for storing the screened sand materials; the dust removal system is connected with the screening mechanism; the whole process of the application is simple and convenient to operate, and the resources can be utilized to the maximum extent.

Description

Technical Field

[0001] This utility model belongs to the technical field of building material manufacturing equipment, specifically relating to a device for secondary material separation and shaping to prepare ultrafine sand. Background Technology

[0002] With the development of the construction industry, especially the expansion of the specialty mortar market, the demand for ultrafine sand is steadily increasing. In the traditional model, the ultrafine sand used in the production of specialty mortar mainly comes from river sand, which is not only costly and of unstable quality, but also consumes a large amount of energy during the drying process, easily leading to resource waste and environmental pollution. Although medium sand production technology is mature in the market, the high technical difficulty, complex process, high powder content, and high energy consumption in ultrafine sand production seriously restrict the industry's development. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device for secondary material separation and shaping to prepare ultrafine sand.

[0004] The present invention adopts the following technical solution:

[0005] An apparatus for preparing ultrafine sand through multiple material distribution and shaping includes a feeding system, a material distribution and shaping system, a screening system, a storage system, and a dust removal system.

[0006] The feeding system is used to store and transport raw materials to the material sorting and shaping system;

[0007] The material distribution and shaping system distributes and crushes the incoming raw materials. It includes a first material distribution valve connected to the feeding system, a first elevator connected to the first material distribution valve, a crusher for crushing the raw materials, and a second elevator connected between the first material distribution valve and the crusher. The first elevator sends aggregates with a particle size ≤ 4.75mm that enter through the first material distribution valve into the screening system, and the second elevator sends oversized materials with a particle size > 4.75mm that enter through the first material distribution valve into the crusher.

[0008] The screening system screens the incoming raw materials to obtain fine sand and extra-fine sand. It includes a screening mechanism connected to the first elevator and the crusher, and a second material distribution valve connected to the screening mechanism. The screening mechanism processes the incoming raw materials to obtain extra-fine sand with a particle size of 0.075-0.85mm, screened sand with a particle size of 0.85-4.75mm, and oversized material with a particle size >4.75mm.

[0009] The storage system includes a first storage tank for storing extra-fine sand and a second storage tank connected to a second distribution valve for storing screened sand with a particle size of 0.85-4.75 mm;

[0010] The dust removal system, connected to the screening mechanism, is used to adsorb stone powder with a particle size <0.075mm.

[0011] Furthermore, the screening system also includes a first screw conveyor connected to the screening mechanism for conveying ultrafine sand, a gyratory screen connected to the first screw conveyor for screening ultrafine sand into various specifications, and multiple second screw conveyors for conveying ultrafine sand of various specifications to the storage system respectively. The first storage tank is provided in multiple ways to store ultrafine sand of different specifications respectively.

[0012] Furthermore, the screening system also includes a third elevator connected between the first screw conveyor and the gyratory screen, and multiple fourth elevators respectively connected between multiple second screw conveyors and multiple first storage tanks.

[0013] Furthermore, the dust removal system includes a powder classifier connected between the screening mechanism and the first screw conveyor and a dust collector connected to the powder classifier. The powder classifier processes the incoming stone powder to remove the extra-fine sand mixed in it and sends it into the first screw conveyor.

[0014] Furthermore, the dust removal system also includes a third screw conveyor connected to the dust collector, and the storage system also includes a third storage tank for storing stone powder. The third screw conveyor transports the stone powder adsorbed and recovered by the dust collector to the third storage tank.

[0015] Furthermore, the dust removal system also includes a fifth elevator connected between the third screw conveyor and the third storage tank.

[0016] Furthermore, the screening system also includes a finished product detection component disposed between the screening mechanism and the first screw conveyor, the finished product detection component including a detection camera for detecting the particle size of ultrafine sand.

[0017] Furthermore, the screening system also includes a fine sand conveyor belt connected to the second distribution valve, a sixth elevator connected to the fine sand conveyor belt to transport fine sand to the second storage tank, and a return conveyor belt connected to the second elevator. The return conveyor belt is connected to the screening mechanism and the second distribution valve, respectively.

[0018] Furthermore, the feeding system includes a raw material silo for storing raw materials, a variable frequency feeder connected to the raw material silo, and a raw material belt conveyor connected to the variable frequency feeder to supply materials to the first distributing valve.

[0019] Furthermore, the feeding system also includes a raw material detection device installed on the raw material belt conveyor to detect the condition of the raw material, and controls the operation of the first distributing valve based on the signal fed back by the raw material detection device.

[0020] As can be seen from the above description of this utility model, compared with the prior art, the beneficial effects of this utility model are as follows: This application specifically defines the structure of the material distribution and shaping system and the screening system. The first material distribution valve cooperates with the first elevator and the second elevator to send materials of different particle sizes into the corresponding processing system. After the crusher crushes the oversized materials, they enter the screening mechanism for screening. The materials of different particle sizes are separated by diffusion and fine screening, which effectively reduces the stone powder content in the finished product to obtain extra-fine sand and fine sand that meet production requirements. The first elevator and the second elevator can be set up to select the sand making mode according to different working conditions to achieve efficient production. The swing screen can screen the incoming extra-fine sand into fine sand of different particle size specifications to meet different production needs, maximize the utilization of resources, and greatly reduce resource waste and environmental pollution. Moreover, the overall process is simple and easy to operate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the preparation process of this application;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0023] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0024] In the diagram, 1-feeding system, 2-material distribution and shaping system, 3-screening system, 4-storage system, 5-dust removal system, 11-raw material silo, 12-variable frequency feeder, 13-raw material belt conveyor, 14-raw material detection device, 21-first material distribution valve, 22-first elevator, 23-crusher, 24-second elevator, 31-screening mechanism, 311-blower, 32-second material distribution valve, 33-first screw conveyor, 34-gyratory screen, 341-third elevator, 35-second screw conveyor, 36-fourth elevator, 37-fine sand belt conveyor, 38-sixth elevator, 39-return material belt conveyor, 30-finished product detection component, 41-first storage tank, 42-second storage tank, 43-third storage tank, 51-powder classifier, 52-dust collector, 53-third screw conveyor, 54-fifth elevator. Detailed Implementation

[0025] The present invention will be further described below through specific embodiments.

[0026] Reference Figures 1 to 3As shown, an apparatus for preparing ultrafine sand through secondary material distribution and shaping can process incoming raw materials to obtain ultrafine sand with a particle size of 0.075-0.85mm, screened sand with a particle size of 0.85-4.75mm, and stone powder with a particle size <0.075mm. The apparatus includes a feeding system 1, a material distribution and shaping system 2, a screening system 3, a storage system 4, and a dust removal system 5.

[0027] The feeding system 1 is used to store and transport raw materials to the material sorting and shaping system 2. It includes a raw material silo 11 for storing raw materials, a variable frequency feeder 12 connected to the raw material silo 11, and a raw material belt conveyor 13 connected to the variable frequency feeder 12 to supply materials to the material sorting and shaping system 2.

[0028] The material distribution and shaping system 2 distributes and crushes the incoming raw materials. It includes a first distribution valve 21 connected to the raw material conveyor 13, a first elevator 22 connected to the first distribution valve 21, a crusher 23 for crushing the raw materials, and a second elevator 24 connected between the first distribution valve 21 and the crusher 23. The first elevator 22 feeds aggregates with a particle size ≤4.75mm entering through the first distribution valve 21 into the screening system 3. The second elevator 24 feeds oversized materials with a particle size >4.75mm entering through the first distribution valve 21 into the crusher 23. Specifically, the crusher 23 is an impact crusher or other crusher capable of achieving the same technical effect. Through a three-in-one process of "reaction," "shearing," and "grinding," the crushing ratio and particle shape are improved. Furthermore, a raw material detection device 14 can be configured on the raw material conveyor belt 13 to intelligently identify the raw material condition and then control the operation of the first distribution valve 21 to achieve intelligent, efficient, and high-yield production, and realize the autonomous selection of production mode. The raw material detection device 14 includes a detection camera for detecting the particle size of the raw material. When the incoming raw material is an oversized material with a particle size > 4.75mm, the first distribution valve 21 is connected to the second elevator 24. When the incoming raw material is an aggregate with a particle size ≤ 4.75mm, the first distribution valve 21 is connected to the first elevator 22.

[0029] The screening system 3 screens the incoming raw materials to obtain fine sand and extra-fine sand. It includes a screening mechanism 31 connected to the first elevator 22 and the crusher 23, a second material distribution valve 32 connected to the screening mechanism 31, a first screw conveyor 33 connected to the screening mechanism 31 for conveying extra-fine sand, a gyratory screen 34 connected to the first screw conveyor 33 for screening the extra-fine sand into various sizes, multiple second screw conveyors 35 for conveying the various sizes of extra-fine sand to the storage system 4, and a connection between the first screw conveyor 35 and the gyratory screen 34. The system includes a third elevator 341, multiple fourth elevators 36 connected between multiple second screw conveyors 35 and the storage system 4, a fine sand belt conveyor 37 connected to the second material distribution valve 32, a sixth elevator 38 connected to the fine sand belt conveyor 37 to transport fine sand to the storage system 4, a return material belt conveyor 39 connected to the second elevator 24, and a finished product detection assembly 30 located between the screening mechanism 31 and the first screw conveyor 33. The screening mechanism 31 processes the incoming raw material to obtain extra-fine sand with a particle size of 0.075-0.85 mm. The system processes screened sand with a particle size of 0.85-4.75mm and oversized material with a particle size >4.75mm. A return conveyor belt 39 is connected to both the screening mechanism 31 and the second distribution valve 32. When the system does not require the production of screened sand with a particle size of 0.85-4.75mm, the second distribution valve 32 is connected to the return conveyor belt 39, which then feeds both the screened sand with a particle size of 0.85-4.75mm and the oversized material with a particle size >4.75mm into the second elevator 24. When the system requires the production of screened sand with a particle size of 0.85-4.75mm... At this time, the second material distribution valve is connected to the fine sand belt conveyor 37; specifically, the screening mechanism 31 can adopt air separation screening, such as an air screen, which is externally connected to a blower 311. The air entering through the blower 311 can clean the surface of the crushed material, blow away the powder adhering to its surface, and improve the accuracy of screening; furthermore, the finished product detection component 30 includes a detection camera for detecting the size of ultra-fine sand particles. By processing the information fed back by the detection camera, when the amount of screened sand exceeds the preset value, an alarm is triggered to remind that the screen of the screening mechanism 31 is damaged.

[0030] The storage system 4 includes a first storage tank 41 for storing extra-fine sand, a second storage tank 42 connected to a second distribution valve 32 for storing screened sand with a particle size of 0.85-4.75mm, and a third storage tank 43 for storing stone powder with a particle size of <0.075mm. The first storage tank 41 is provided in multiple ways to store extra-fine sand of different specifications.

[0031] The dust removal system 5, connected to the screening mechanism 31, is used to adsorb stone powder with a particle size <0.075mm. It includes a powder classifier 51 connected between the screening mechanism 31 and the first screw conveyor 33, a dust collector 52 connected to the powder classifier 51, a third screw conveyor 53 connected to the dust collector 52, and a fifth elevator 54 connected between the third screw conveyor 53 and the third storage tank 43. The powder classifier 51 processes the incoming stone powder to remove the mixed fine sand and sends it into the first screw conveyor 33. The powder classifier 51 can further purify the powder from the dust collector 52 and further increase the output of fine sand. The third screw conveyor 53 transports the stone powder adsorbed and recovered by the dust collector 52 to the third storage tank 43 via the fifth conveyor 54. Specifically, the powder classifier 51 can be a powder classifier.

[0032] The preparation process specifically includes the following steps:

[0033] Step 1: The raw material is conveyed to the first distribution valve 21 via the raw material belt conveyor 13. The raw material detection device 14 identifies and judges the raw material. When the incoming raw material is identified as oversized material with a particle size > 4.75mm, the first distribution valve 21 is connected to the second elevator 24. When the incoming raw material is identified as aggregate with a particle size ≤ 4.75mm, the first distribution valve 21 is connected to the first elevator 22.

[0034] Step 2: The second elevator 24 conveys the oversized material with a particle size > 4.75mm to the crusher 23 for crushing, and then sends it to the screening mechanism 31 for screening. The first elevator 22 conveys the aggregate with a particle size ≤ 4.75mm to the screening mechanism 31. The screening mechanism 31 screens the incoming aggregate to obtain extra-fine sand with a particle size of 0.075-0.85mm, screened sand with a particle size of 0.85-4.75mm, and oversized material with a particle size > 4.75mm. Stone powder with a particle size < 0.075mm is adsorbed into the powder classifier 51 by the dust collector 52.

[0035] Step 3: The first screw conveyor 33 transports the incoming fine sand to the gyratory screen 34. The gyratory screen 34 separates the fine sand into various particle size specifications according to production needs, and then transports it to the corresponding first storage tank 41 via the corresponding second screw conveyor 35 and fourth elevator 36. When the device does not need to produce screened sand with a particle size of 0.85-4.75mm, the second distribution valve 32 is connected to the return conveyor 39. The return conveyor 39 sends the screened sand with a particle size of 0.85-4.75mm and the oversized material with a particle size >4.75mm to the second elevator 24, and then back into the crusher 23 for crushing. When the device needs to produce screened sand with a particle size of 0.85-4.75mm, the second distribution valve is connected to the fine sand conveyor 37. The fine sand conveyor 37 and the sixth elevator 38 send the fine sand processed by the second distribution valve 32 to the second storage tank 42 for storage.

[0036] Step 4: The powder sorting mechanism 51 processes the incoming stone powder to remove the extra-fine sand mixed in with it. The removed extra-fine sand is sent to the first screw conveyor 33 and then to the gyratory screen 34. The processed stone powder continues to enter the dust collector 52 for recycling. The recycled stone powder is then transported to the third storage tank 43 by the third screw conveyor 53 and the fifth elevator 54.

[0037] This application specifically defines the structure of the material distribution and shaping system 2 and the screening system 3. The first material distribution valve 21, in conjunction with the first elevator 22 and the second elevator 24, feeds materials of different particle sizes into the corresponding processing systems. After the crusher 23 crushes the oversized materials, they enter the screening mechanism 31 for screening. This diffusion separation of materials of different particle sizes allows for fine screening, effectively reducing the stone powder content in the finished product to obtain ultrafine sand and fine sand that meet production requirements. The first elevator 22 and the second elevator 24 allow for selection of sand-making modes according to different working conditions, achieving efficient production. The swing screen 34 can screen the incoming ultrafine sand into fine sand of different particle sizes to meet different production needs, maximizing resource utilization and greatly reducing resource waste and environmental pollution. Furthermore, the overall process is simple and easy to operate.

[0038] The above description is merely a preferred embodiment of the present utility model, and therefore cannot be construed as limiting the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model application and the contents of the specification should still fall within the scope of the present utility model application.

Claims

1. An apparatus for preparing ultrafine sand through secondary material separation and shaping, characterized in that: It includes a feeding system, a material sorting and shaping system, a screening system, a storage system, and a dust removal system. The feeding system is used to store and transport raw materials to the material sorting and shaping system; The material distribution and shaping system distributes and crushes the incoming raw materials. It includes a first material distribution valve connected to the feeding system, a first elevator connected to the first material distribution valve, a crusher for crushing the raw materials, and a second elevator connected between the first material distribution valve and the crusher. The first elevator sends aggregates with a particle size ≤ 4.75mm that enter through the first material distribution valve into the screening system, and the second elevator sends oversized materials with a particle size > 4.75mm that enter through the first material distribution valve into the crusher. The screening system screens the incoming raw materials to obtain fine sand and extra-fine sand. It includes a screening mechanism connected to the first elevator and the crusher, and a second material distribution valve connected to the screening mechanism. The screening mechanism processes the incoming raw materials to obtain extra-fine sand with a particle size of 0.075-0.85mm, screened sand with a particle size of 0.85-4.75mm, and oversized material with a particle size >4.75mm. The storage system includes a first storage tank for storing extra-fine sand and a second storage tank connected to a second distribution valve for storing screened sand with a particle size of 0.85-4.75 mm; The dust removal system, connected to the screening mechanism, is used to adsorb stone powder with a particle size <0.075mm.

2. The apparatus for secondary material separation and shaping to prepare ultrafine sand according to claim 1, characterized in that: The screening system also includes a first screw conveyor connected to the screening mechanism for conveying ultrafine sand, a gyratory screen connected to the first screw conveyor for screening ultrafine sand into various specifications, and multiple second screw conveyors for conveying ultrafine sand of various specifications to the storage system respectively. The first storage tank is provided in multiple ways to store ultrafine sand of different specifications respectively.

3. The apparatus for secondary material separation and shaping to prepare ultrafine sand according to claim 2, characterized in that: The screening system also includes a third elevator connected between the first screw conveyor and the gyratory screen, and multiple fourth elevators respectively connected between multiple second screw conveyors and multiple first storage tanks.

4. The apparatus for secondary material separation and shaping to prepare ultrafine sand according to claim 2, characterized in that: The dust removal system includes a powder classifier connected between the screening mechanism and the first screw conveyor and a dust collector connected to the powder classifier. The powder classifier processes the incoming stone powder to remove the extra-fine sand mixed in it and sends it into the first screw conveyor.

5. The apparatus for secondary material separation and shaping to prepare ultrafine sand according to claim 4, characterized in that: The dust removal system also includes a third spiral conveyor connected to the dust collector, and the storage system also includes a third storage tank for storing stone powder. The third spiral conveyor transports the stone powder adsorbed and recovered by the dust collector to the third storage tank.

6. The apparatus for secondary material separation and shaping to prepare ultrafine sand according to claim 5, characterized in that: The dust removal system also includes a fifth elevator connected between the third screw conveyor and the third storage tank.

7. The apparatus for secondary material separation and shaping to prepare ultrafine sand according to claim 1, characterized in that: The screening system also includes a finished product detection component disposed between the screening mechanism and the first screw conveyor, the finished product detection component including a detection camera for detecting the particle size of ultrafine sand.

8. The apparatus for secondary material separation and shaping to prepare ultrafine sand according to claim 1, characterized in that: The screening system also includes a fine sand conveyor belt connected to the second distribution valve, a sixth elevator connected to the fine sand conveyor belt to transport fine sand to the second storage tank, and a return conveyor belt connected to the second elevator. The return conveyor belt is connected to the screening mechanism and the second distribution valve, respectively.

9. The apparatus for secondary material separation and shaping to prepare ultrafine sand according to claim 1, characterized in that: The feeding system includes a raw material silo for storing raw materials, a variable frequency feeder connected to the raw material silo, and a raw material belt conveyor connected to the variable frequency feeder to supply materials to the first distributing valve.

10. The apparatus for secondary material separation and shaping to prepare ultrafine sand according to claim 9, characterized in that: The feeding system also includes a raw material detection device installed on the raw material belt conveyor to detect the condition of the raw material, and controls the operation of the first distributing valve based on the signal fed back by the raw material detection device.

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