Superfine sand production and processing equipment

Abstract

A kind of superfine sand production processing equipment, including feed conveying device, crushing screening device, storage device and dust removal device, feed conveying device is stored raw material to crushing screening device;Crushing screening device carries out crushing, screening treatment to the incoming raw material, including the crushing machine of the incoming raw material crushing, with the screening mechanism of crushing machine connection to the screening of crushed material, with the distribution valve of screening mechanism connection and with the return belt conveyor of feed conveying device connection, the screening mechanism is screened into superfine sand, screening sand material and over-limit material;Storage device includes first storage tank for storing superfine sand and second storage tank for storing fine sand connected with distribution valve;Dust removal device screening mechanism connection, for adsorbing stone powder;The processing equipment of the application, overall process is simple, easy to operate, can realize the maximum utilization of resources.

Description

Technical Field

[0001] This utility model belongs to the field of building material preparation technology, specifically relating to an ultra-fine sand production and processing equipment. 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 existing technology and provide an equipment for producing and processing ultrafine sand.

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

[0005] A type of ultrafine sand production and processing equipment includes a feeding and conveying device, a crushing and screening device, a storage device, and a dust removal device.

[0006] The feeding and conveying device transports the stored raw materials to the crushing and screening device;

[0007] The crushing and screening device crushes and screens incoming raw materials. It includes a crusher for crushing the incoming raw materials, a screening mechanism connected to the crusher for screening the crushed material, a material distribution valve connected to the screening mechanism, and a return conveyor belt connected to the feeding conveyor. The screening mechanism screens the crushed material into ultra-fine sand with a particle size of 0.075-0.85mm, screened sand with a particle size of 0.85mm-4.75mm, and oversized material with a particle size >4.75mm. The return conveyor belt is connected to the screening mechanism and the material distribution valve respectively.

[0008] The storage device includes a first storage tank for storing extra-fine sand and a second storage tank connected to a distribution valve for storing screened sand with a particle size of 0.85-4.75 mm;

[0009] The dust removal device, connected to the screening mechanism, is used to adsorb stone powder with a particle size <0.075mm.

[0010] Furthermore, the crushing and screening device 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 a storage device respectively. The first storage tank is provided in multiple ways to store ultrafine sand of different specifications respectively.

[0011] Furthermore, the crushing and screening device also includes a first fine sand elevator connected between the first screw conveyor and the gyratory screen, and multiple second fine sand elevators respectively connected between multiple second screw conveyors and multiple first storage tanks.

[0012] Furthermore, the crushing and screening device 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.

[0013] Furthermore, the dust removal device 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 device 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 device also includes a stone powder elevator connected between the third screw conveyor and the third storage tank.

[0016] Furthermore, the crushing and screening device also includes a fine sand belt conveyor connected to the material distribution valve and a fine sand elevator connected to the fine sand belt conveyor to transport the fine sand to the second storage tank.

[0017] Furthermore, the feeding and conveying device includes a raw material silo for storing raw materials, a variable frequency feeder connected to the raw material silo, a raw material belt conveyor connected to the variable frequency feeder, and a raw material elevator connected to the raw material belt conveyor for feeding materials to the crusher. The return conveyor is connected to the raw material elevator.

[0018] 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 crushing and screening device. The raw material is transported to the crusher by the raw material elevator for crushing, and then enters the screening mechanism for screening. The material of different particle sizes is separated by diffusion and fine screening, which effectively reduces the stone powder content in the finished product to obtain ultrafine sand and fine sand that meet production requirements. Among them, the setting of the gyratory screen can screen the incoming ultrafine 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

[0019] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0021] Figure 3 Flowchart of the production and processing of ultrafine sand;

[0022] In the diagram, 1-feeding conveyor system, 2-crushing and screening device, 3-storage device, 4-dust removal device, 11-raw material silo, 12-frequency conversion feeder, 13-raw material belt conveyor, 14-raw material elevator, 21-crusher, 22-screening mechanism, 221-blower, 23-distribution valve, 24-return material belt conveyor, 25-first screw conveyor, 26-gyratory screen, 261-first fine sand elevator, 27-second screw conveyor, 271-second fine sand elevator, 28-fine sand belt conveyor, 29-fine sand elevator, 20-finished product testing component, 31-first storage tank, 32-second storage tank, 33-third storage tank, 41-powder classifier, 42-dust collector, 43-third screw conveyor, 44-stone powder elevator. Detailed Implementation

[0023] The present invention will be further described below through specific embodiments.

[0024] Reference Figures 1 to 3 As shown, an ultrafine sand production and processing equipment processes 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 equipment includes a feeding conveying device 1, a crushing and screening device 2, a storage device 3, and a dust removal device 4.

[0025] The feeding and conveying device 1 transports the stored raw materials to the crushing and screening device 2, including a raw material bin 11 for storing raw materials, a variable frequency feeder 12 connected to the raw material bin 11, a raw material belt conveyor 13 connected to the variable frequency feeder 12, and a raw material elevator 14 connected to the raw material belt conveyor 13 for feeding materials to the crushing and screening device 2.

[0026] The crushing and screening device 2 crushes and screens the incoming raw materials, including a crusher 21 for crushing the raw materials, a screening mechanism 22 connected to the crusher 21 for screening the crushed material, a material distribution valve 23 connected to the screening mechanism 21, a return conveyor 24 connected to the raw material elevator 14, a first screw conveyor 25 connected to the screening mechanism 22 for conveying extra-fine sand, a gyratory screen 26 connected to the first screw conveyor 25 for screening the extra-fine sand into various sizes, multiple second screw conveyors 27 for conveying the extra-fine sand of various sizes to the storage device 3, and a connection between the first screw conveyor 25 and the gyratory screen 2. The system includes a first fine sand elevator 261 between six points, multiple second fine sand elevators 271 connected between multiple second screw conveyors 27 and storage device 3, a fine sand belt conveyor 28 connected to the material distribution valve 23, a fine sand elevator 29 connected to the fine sand belt conveyor 28 to transport fine sand to storage device 3, and a finished product detection assembly 20 located between screening mechanism 22 and first screw conveyor 25. The screening mechanism 22 screens the crushed material into 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. A return conveyor belt is also included. 24 is connected to the distribution valve 23 and the screening mechanism 22 respectively. When the equipment does not need to produce screened sand with a particle size of 0.85-4.75mm, the distribution valve 23 is connected to the return conveyor 24, which 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 raw material elevator 14. When the equipment needs to produce screened sand with a particle size of 0.85-4.75mm, the distribution valve 23 is connected to the fine sand conveyor 28. Specifically, the crusher 21 is an impact crusher or other crusher that can achieve the same technical effect, through "impact", "shear", The "grinding" process combines three effects to achieve the goal of increasing the crushing ratio and improving the particle shape. Furthermore, the screening mechanism 22 can adopt air separation screening, such as an air screen, with an external blower 221. The air from the blower 221 can clean the surface of the crushed material, blow away the powder adhering to its surface, reduce the powder content in the ultrafine sand, and ensure the quality of the prepared ultrafine sand. Furthermore, the finished product detection component 20 includes a detection camera for detecting the particle size of ultrafine sand. 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 22 is damaged.

[0027] The storage device 3 includes a first storage tank 31 for storing extra-fine sand, a second storage tank 32 connected to the distribution valve 23 for storing screened sand with a particle size of 0.85-4.75mm, and a third storage tank 33 for storing stone powder. The first storage tank 31 is provided in multiple ways to store extra-fine sand of different specifications.

[0028] The dust removal device 4, connected to the screening mechanism 22, is used to adsorb stone powder with a particle size <0.075mm. It includes a powder classifier 41 connected between the screening mechanism 22 and the first screw conveyor 25, a dust collector 42 connected to the powder classifier 41, a third screw conveyor 43 connected to the dust collector 42, and a stone powder elevator 44 connected between the third screw conveyor 43 and the third storage tank 33. The powder classifier 41 processes the incoming stone powder to remove the mixed fine sand and sends it into the first screw conveyor 25. The third screw conveyor 43 transports the stone powder adsorbed and recovered by the dust collector 42 to the third storage tank 33. Specifically, the powder classifier is a powder classifier.

[0029] The processing procedure specifically includes the following steps:

[0030] Step 1: The raw materials are conveyed to the crusher 21 via the raw material belt conveyor 13 and the raw material elevator 14. After being crushed by the crusher 21, the raw materials enter the screening mechanism 22 for screening to obtain ultra-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 selection mechanism 41 by the dust collector 42.

[0031] Step 2: The first screw conveyor 25 transports the incoming fine sand to the gyratory screen 26. The gyratory screen 26 separates the fine sand into various particle size specifications according to production needs, and then transports it to the corresponding first storage tank 31 via the corresponding second screw conveyor 27 and second fine sand elevator 271. When the equipment does not need to produce screened sand with a particle size of 0.85-4.75mm, the distribution valve 23 is connected to the return conveyor 24. The return conveyor 24 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 raw material elevator 14, and then into the crusher 21 for re-crushing. When the equipment needs to produce screened sand with a particle size of 0.85-4.75mm, the distribution valve 23 is connected to the fine sand conveyor 28. The fine sand conveyor 28 and the fine sand elevator 29 work together to send the screened sand into the second storage tank 32 for storage.

[0032] Step 3: The powder sorting mechanism 41 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 25 and then to the gyratory screen 26. The processed stone powder continues to enter the dust collector 42 for recycling. The recycled stone powder is then transported to the third storage tank 33 by the third screw conveyor 43 and the stone powder elevator 44.

[0033] This application specifically defines the structure of the crushing and screening device. The raw material is conveyed by the raw material elevator 25 to the crusher 21 for crushing, and then enters the screening mechanism 22 for screening. The material of different particle sizes is separated by diffusion and fine screening, which effectively reduces the stone powder content in the finished product to obtain ultrafine sand and fine sand that meet production requirements. The swing screen 26 can screen the incoming ultrafine sand into fine sand of different particle sizes 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.

[0034] 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. A processing equipment for producing ultrafine sand, characterized in that: It includes a feeding conveyor, a crushing and screening device, a storage device, and a dust removal device. The feeding and conveying device transports the stored raw materials to the crushing and screening device; The crushing and screening device crushes and screens incoming raw materials. It includes a crusher for crushing the incoming raw materials, a screening mechanism connected to the crusher for screening the crushed material, a material distribution valve connected to the screening mechanism, and a return conveyor belt connected to the feeding conveyor. The screening mechanism screens the crushed material into ultra-fine sand with a particle size of 0.075-0.85mm, screened sand with a particle size of 0.85mm-4.75mm, and oversized material with a particle size >4.75mm. The return conveyor belt is connected to the screening mechanism and the material distribution valve respectively. The storage device includes a first storage tank for storing extra-fine sand and a second storage tank connected to a distribution valve for storing screened sand with a particle size of 0.85-4.75 mm; The dust removal device, connected to the screening mechanism, is used to adsorb stone powder with a particle size <0.075mm.

2. The ultrafine sand production and processing equipment according to claim 1, characterized in that: The crushing and screening device 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 a storage device. The first storage tank is provided in multiple ways to store ultrafine sand of different specifications.

3. The ultrafine sand production and processing equipment according to claim 2, characterized in that: The crushing and screening device also includes a first fine sand elevator connected between the first screw conveyor and the gyratory screen, and multiple second fine sand elevators respectively connected between multiple second screw conveyors and multiple first storage tanks.

4. The ultrafine sand production and processing equipment according to claim 3, characterized in that: The crushing and screening device 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.

5. The ultrafine sand production and processing equipment according to claim 2, characterized in that: The dust removal device 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.

6. The ultrafine sand production and processing equipment according to claim 5, characterized in that: The dust removal device 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.

7. The ultrafine sand production and processing equipment according to claim 6, characterized in that: The dust removal device also includes a stone powder elevator connected between the third screw conveyor and the third storage tank.

8. The ultrafine sand production and processing equipment according to claim 1, characterized in that: The crushing and screening device also includes a fine sand belt conveyor connected to the material distribution valve and a fine sand elevator connected to the fine sand belt conveyor to transport fine sand to the second storage tank.

9. The ultrafine sand production and processing equipment according to claim 1, characterized in that: The feeding and conveying device includes a raw material bin for storing raw materials, a variable frequency feeder connected to the raw material bin, a raw material belt conveyor connected to the variable frequency feeder, and a raw material elevator connected to the raw material belt conveyor for feeding materials to the crusher. The return conveyor is connected to the raw material elevator.

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