Superfine sand crushing and grading complete production equipment
Through crushing and grading complete sets of production equipment, the screening problems of stone powder and extra fine sand in fine sand are solved, efficient screening and resource utilization are achieved, and energy consumption and cost are reduced.
Patent Information
- Application Number
- CN202422421476.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-11-14
- Filing Date
- 2024-10-08
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-08
AI Technical Summary
The existing fine sand grading equipment cannot effectively screen out the stone powder and extra fine sand in the fine sand, resulting in waste of resources and environmental pollution, and at the same time, it is low in work efficiency and high energy consumption.
The complete set of production equipment for crushing and grading of extra fine sand is adopted, including crushers, powder sorters, re-sieve elevators and re-sieve machines. Through crushing, powder selection and multiple screenings, stone powder and extra fine sand are separated to improve screening efficiency.
It realizes efficient screening of fine sand, reduces resource waste and environmental pollution, improves work efficiency and reduces production costs.
Smart Images
Figure CN223263986U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of dry sand classification, in particular to a complete set of production equipment for ultra-fine sand crushing and classification. Background Art
[0002] Dry sand is an aggregate processed by dry screening. During the preparation process of aggregate, it needs to be screened into various particle sizes through grading equipment. The existing grading equipment mainly includes a feed hopper, a raw material belt conveyor, an elevator, a screening machine and a collecting hopper. The feed hopper is connected to the input end of the raw material belt conveyor, the output end of the raw material belt conveyor is connected to the input end of the elevator, and the output end of the elevator is connected to the screening machine. The screening machine has several layers of screens, which are divided into large-size screens, medium-size screens and small-size screens. The screening machine is provided with several sand outlets for discharging fine sand of different particle sizes and corresponding to the output ends of the screens. The collecting hopper is connected below the sand outlet of the screening machine. When in use, the dry sand is transported into the feed hopper, the dry sand is transported to the elevator through the raw material belt conveyor, the elevator transports the dry sand onto the screen, the screen separates the dry sand into coarse sand, medium sand and fine sand, and finally is collected by the collecting hopper.
[0003] However, the fine sand sieved out by the above-mentioned fine sand grading equipment still contains some relatively fine stone powder and ultra-fine sand with an even smaller particle size. If the fine sand contains a high content of stone powder, it cannot be directly used in production and processing. If the fine sand is directly discarded and landfilled, the ultra-fine sand can also be used as fine powder in the production and processing process, which is likely to cause waste of resources and pollution of the environment. In addition, the above-mentioned fine sand grading equipment directly drops the dry sand onto the screen through the elevator, and the overall dry sand particle size is relatively large. In this way, medium sand and fine sand are easy to fall from the sand outlet together with coarse sand, which results in the dry sand needing to undergo multiple cycles of grading before it can be subdivided into the required aggregates of different particle sizes, and the ideal grading effect cannot be achieved, the work efficiency is low, and the ineffective energy consumption is high.
[0004] In view of this, the inventor of this case conducted in-depth research on the problem, which led to the creation of this case. Utility Model Content
[0005] The purpose of the utility model is to provide a complete set of production equipment for ultra-fine sand crushing and grading, so as to solve the problems that the existing fine sand grading equipment cannot further screen the stone powder and ultra-fine sand in the fine sand, has low working efficiency and high ineffective energy consumption.
[0006] In order to achieve the purpose, the utility model adopts the following technical solution:
[0007] A complete set of production equipment for ultra-fine sand crushing and grading, including a feed hopper, a raw material belt conveyor, an elevator, a screening machine and a collecting hopper. The feed hopper is connected to the input end of the raw material belt conveyor, the elevator is connected to the screening machine, the screening machine has a large particle size screen and a small particle size screen, and the screening machine is provided with a first sand outlet and a second sand outlet corresponding to the output ends of the large particle size screen and the small particle size screen; it also includes a crusher, a powder classifier, a re-screening elevator and a re-screening machine. The feed end of the raw material belt conveyor is connected to the elevator, the screening machine has a large particle size screen and a small particle size screen, and the screening machine is provided with a first sand outlet and a second sand outlet corresponding to the output ends of the large particle size screen and the small particle size screen; it also includes a crusher, a powder classifier, a re-screening elevator and a re-screening machine. The output end and the first sand outlet are connected to the input end of the crusher, the output end of the crusher is connected to the input end of the elevator, the second sand outlet is connected to the input end of the re-screening elevator, the output end of the re-screening elevator is connected to the input end of the re-screening machine, the re-screening machine has a fine screen, the output end of the fine screen is connected to the aggregate hopper, and the powder classifier is located between the output end of the elevator and the input end of the screening machine or between the output end of the screening machine and the re-screening elevator.
[0008] With the extension direction of the raw material belt conveyor as the left and right direction, the output end of the feed hopper is connected to the left input end of the raw material belt conveyor, and the raw material transfer belt conveyor extending along the left and right directions is connected below the output end of the raw material belt conveyor. The left side of the input end of the crusher is connected below the output end of the raw material transfer belt conveyor, and the raw material transfer belt conveyor is provided with a first iron remover for removing ferromagnetic impurities in the dry sand on the raw material transfer belt conveyor.
[0009] A vibrating feeder and a feeding pipe are provided between the input end of the screening machine and the output end of the elevator. The feeding pipe extends in the left and right directions, and the right side of the feeding pipe is connected to the output end of the elevator. The vibrating feeder is located at the lower left side of the feeding pipe, and the input end of the screening machine is located below the output end of the vibrating feeder.
[0010] The screening machine is located outside the upper left side of the feed hopper, the second sand outlet is located on the right bottom surface of the screening machine, the input end of the powder classifier is directly below the second sand outlet, and the powder classifier is located outside the left side of the feed hopper. A dust removal port connected to the input end of the powder classifier is provided on the outer side wall of the powder classifier, and the dust removal port of the powder classifier is connected to a dust collector through a dust removal pipe.
[0011] The above-mentioned powder classifier is connected below the output end of the vibrating feeder, and the output end of the powder classifier is connected to the input end of the screening machine.
[0012] The re-screening elevator is erected outside the left side of the powder classifier. The output end of the re-screening elevator is connected to an output pipe, and the output pipe is connected to two branch pipes. The bottom of the two branch pipes is connected to the above-mentioned re-screening machine.
[0013] The re-screening machine is a swing screen.
[0014] The first sand outlet of the screening machine is located on the left bottom surface of the screening machine, and a return pipe and a return belt conveyor are provided between the first sand outlet and the output end of the crusher. The return pipe extends in the left and right directions and is staggered with the powder classifier, and the input end of the return pipe is connected to the first sand outlet, and the output end of the return pipe is connected to the input end of the return belt conveyor. The output end of the return belt conveyor is connected to the right side of the input end of the crusher, and the return belt conveyor is provided with a second iron remover to remove ferromagnetic impurities in the coarse sand on the return belt conveyor.
[0015] The dry sand that falls from the second sand outlet enters the powder classifier again for crushing and grading, and then circulates and screens again, with better grading effect. The dry sand that falls from the second sand outlet enters the powder classifier, and the stone powder in the small-size dry sand is selected and output, and the remaining small-size dry sand without stone powder is transported to the fine screen on the re-screening machine through the re-screening elevator for screening, and finally ultra-fine sand is screened out. Compared with the prior art By comparison, the powder classifier can separate stone powder and ultrafine sand from dry sand, thereby reducing the stone powder content in ultrafine sand, so that the ultrafine sand can be further used without discarding the fine sand, which can effectively utilize raw materials, reduce resource waste and environmental pollution; at the same time, in the screening process, the dry sand is crushed in advance by the crusher, reducing the number of subsequent classifications, and the large-particle dry sand falling from the first sand outlet can directly enter the crusher for the second time, and then be classified and screened, which can achieve a better classification effect, and at the same time, no additional transportation is required, the work efficiency is higher, and the invalid energy consumption of repeated transportation is reduced; furthermore, the powder classifier can be placed between the output end of the elevator and the input end of the screening machine, and the stone powder and ultrafine sand can be screened in advance before the fine sand is screened. The stone powder is output through the powder classifier, and the ultrafine sand is screened through the screening machine. The screening efficiency of the ultrafine sand without stone powder is also higher, and the invalid efficiency is low, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural diagram of the present utility model. DETAILED DESCRIPTION
[0017] In order to further explain the technical solution of the present invention, it is described in detail below with reference to the accompanying drawings.
[0018] A complete set of production equipment for ultra-fine sand crushing and grading, such as Figure 1As shown, it includes a feed hopper 1, a raw material belt conveyor 2, an elevator 3, a screening machine 4, a collecting hopper 5, a crusher 6, a powder classifier 7, a re-screening elevator 8 and a re-screening machine 9. The feed hopper 1 is connected to the input end of the raw material belt conveyor 2, and the elevator 3 is connected to the screening machine 4. The screening machine 4 has a large particle size screen 41 and a small particle size screen 42 that can be disassembled and installed, and the screening machine 4 has a hollow shell. The shell is provided with a first sand outlet 100 and a second sand outlet 200 that correspond to the output ends of the large particle size screen 41 and the small particle size screen 42. A feed port connected to the hollow chamber of the shell is provided on the right side of the top surface of the shell; specifically, the large particle size screen 41 and the small particle size screen 42 The method of disassembling and installing the screen 42 and the inner wall of the shell is a well-known technology for those skilled in the art. The large particle size screen is divided into a first large particle size screen and a second large particle size screen. The first large particle size screen, the second large particle size screen and the small particle size screen 42 are arranged in sequence from top to bottom. The sieve hole size of the first large particle size screen is greater than 4.75mm, the sieve hole size of the second large particle size screen is 2.36mm-4.75mm, and the sieve hole size of the small particle size screen 42 is 0.83mm-2.36mm. The first large particle size screen, the second large particle size screen and the small particle size screen are all arranged in an inclined manner downward from right to left in the shell, and a hollow structured blanking shell 4 is erected on the left side of the shell. 3. The blanking shell 43 is provided with a blanking plate locked on the outer side wall of the right end of the blanking shell 43. There are four blanking plates, which are inclined upward from left to right and spaced apart from each other. The blanking plate on the top surface is connected to the top surface of the shell, and the remaining blanking plates are respectively connected to the left end of the first large particle size screen, the left end of the second large particle size screen and the left end of the small particle size screen, and a blanking space is formed between the two blanking plates, which is connected to the hollow chamber of the blanking shell 43 and the hollow chamber of the shell, that is, the outer side of the blanking shell 43 is provided with a feeding port corresponding to the blanking space, the right side of the bottom surface of the shell is provided with the above-mentioned first sand outlet, and the bottom surface of the blanking shell is provided with the above-mentioned second sand outlet. Mouth; when used, dry sand enters from the feed port, and the dry sand with a particle size greater than 4.75 mm is output through the output end of the first large particle size screen, and the dry sand with a particle size greater than 2.36 mm and less than 4.75 mm is output through the output end of the second large particle size screen. The dry sand with a particle size greater than 0.83 mm and less than 2.36 mm is output from the output end of the small particle size screen. The corresponding large particle size screen 41 and small particle size screen 42 are installed as needed, and the dry sand can fall from the corresponding blanking plate and finally fall from the first sand outlet 100, that is, the dry sand with a particle size greater than 0.83 mm falls from the first sand outlet, and the dry sand with a particle size less than 0.83 mm finally falls from the second sand outlet 100.
[0019] The output end of the raw material conveyor 2 is connected to the input end of the crusher 6 through the raw material transfer conveyor 21; specifically, the bottom surface of the feed hopper 1 is provided with a strip discharge port extending in the front-to-back direction, the strip discharge port is connected to the left input end of the raw material conveyor 2, and the strip discharge port is within the range of the raw material conveyor 2, and the output end of the raw material conveyor 2 is connected to the raw material transfer conveyor 21 extending in the left-right direction. The left side of the input end of the crusher 6 is connected to the right side below the output end of the raw material transfer conveyor 21, and the raw material transfer conveyor 21 is provided with a first iron remover for removing ferromagnetic impurities in the dry sand on the raw material transfer conveyor 21 211. The way in which the first iron remover 211 removes ferromagnetic impurities on the raw material transfer belt conveyor 21 and the working method of the crusher are both well-known technologies to those skilled in the art and will not be elaborated here. When in use, the dry sand is transported to the feed hopper, and the dry sand falls from the feed hopper 1 and is transported to the raw material transfer belt conveyor 21 through the raw material belt conveyor. During the conveying process of the raw material transfer belt conveyor 21, the ferromagnetic impurities in the dry sand of the raw material transfer belt conveyor are removed by the first iron remover 211. The dry sand then falls from the output end of the raw material transfer belt conveyor to the crusher 6. After being crushed by the crusher 6, the subsequent screening effect of the dry sand is better, thereby improving the screening efficiency.
[0020] The output end of the crusher 6 is connected to the input end of the elevator 3, and the output end of the elevator 3 is connected to the input end of the screening machine 4 through the vibrating feeder 31 and the feeding pipe 32. Specifically, the elevator 3 is arranged vertically, the feeding pipe 32 extends in the left and right directions, and the right side of the feeding pipe 32 is connected to the output end of the elevator 3, the vibrating feeder 31 is located at the lower left side of the feeding pipe 32, and the input end of the screening machine 4 is located below the output end of the vibrating feeder 31. The specific structure of the vibrating feeder and the The working method is well known to those skilled in the art and will not be described in detail here. When in use, the dry sand enters the feed port of the screening machine 4 through the feeding pipe 32 and the vibrating feeder 31 and is screened by the large-size screen 41 and the small-size screen 42. At the same time, it is transported through the feeding pipe 32 so that the dry sand output from the output end of the elevator 3 will not fall in piles, and the dry sand is vibrated and dropped by the vibrating feeder 31 so that the dry sand can be dispersed and dropped into the screening machine, thereby achieving a better screening effect of the dry sand.
[0021] The second sand outlet 200 is connected to the input end of the powder classifier 7; specifically, the screening machine 4 is located outside the upper left side of the feed hopper 1, the second sand outlet 200 is located on the right bottom surface of the screening machine 4, the input end of the powder classifier 7 is directly below the second sand outlet 200, and the powder classifier 7 is located outside the left side of the feed hopper 1. A dust removal port connected to the input end of the powder classifier 7 is provided on the outer wall of the powder classifier 7, and the dust removal port of the powder classifier 7 is connected to the dust collector 71 through a dust removal pipe. A collection device for collecting stone powder is provided below the output end of the dust collector 71. The working mode of the powder classifier and the dust collector is a well-known technology and will not be elaborated here. When used, the dry sand with a particle size less than 0.83 mm falling from the second sand outlet 200 passes through the powder classifier 7, and under the action of the dust collector 71, the stone powder in the dry sand with a particle size less than 0.83 mm is sorted out.
[0022] The output end of the powder classifier 7 is connected to the input end of the re-screening elevator 8, the output end of the re-screening elevator 8 is connected to the input end of the re-screening machine 9, the output end of the re-screening machine 9 is connected to the aggregate hopper 5, and the re-screening machine 9 is a swing screen, the swing screen has a fine screen, and the output end of the fine screen is connected to the aggregate hopper; specifically, the re-screening elevator 8 is upright outside the left side of the powder classifier 7, and the output end of the re-screening elevator 8 is connected to an output pipe 81, and the output pipe 81 is connected to two branch pipes, and the bottom of the two branch pipes is connected to the above-mentioned re-screening machine 9. The specific structure of the swing screen is well known to those skilled in the art and will not be elaborated here; when used, the fine sand with a particle size less than 0.83 mm and free of stone powder output from the output end of the re-screening elevator 8 passes through the branch pipe, and then is further screened out through the fine screen to obtain the required particle size of ultra-fine sand for further use.
[0023] The first sand outlet is connected to the right side of the input end of the crusher; specifically, the right output end of the crusher 6 is connected to the output end of the first sand outlet 100 through a return pipe (not shown in the figure) and a return belt conveyor 61. The return pipe extends in the left and right directions and is staggered with the powder selector 7. The input end of the return pipe is connected to the first sand outlet 100, and the output end of the return pipe is connected to the input end of the return belt conveyor 61. The output end of the return belt conveyor 61 is connected to the right side of the input end of the crusher 6, and the return belt conveyor 61 is provided with a The second iron remover is used to remove ferromagnetic impurities from the coarse sand on the return conveyor 61. When in use, dry sand with a particle size greater than 0.83 mm falls from the first sand outlet 100, and is then transported to the return conveyor 61 through the return pipe. The ferromagnetic impurities in the dry sand on the return conveyor 61 are further removed by the second iron remover, and finally fall into the crusher for further crushing, and then are transported to the screening machine 4 through the elevator 3 for further screening, so that the dry sand greater than 0.83 mm can be circulated and screened again, so that the whole can be circulated for graded screening.
[0024] The present invention is a complete set of production equipment for crushing and grading ultra-fine sand. When in use, dry sand is transported into the feed hopper 1, and the dry sand is transported through the raw material belt conveyor 2, and then transferred to the crusher 6 through the raw material transfer belt conveyor 21 to crush the dry sand, thereby improving the subsequent screening efficiency. The elevator 3 transports the dry sand to the large-particle size screen 41 and the small-particle size screen 42 in the screening machine for screening. Dry sand with a particle size greater than 0.83 mm falls from the first sand outlet, and dry sand with a particle size less than 0.83 mm finally falls from the second sand outlet 100. The dry sand falling from the first sand outlet enters the crusher again for crushing, and then circulates screening again, with better grading effect. The dry sand falling from the second sand outlet enters the powder classifier 7, and the powder classifier selects the stone powder in the dry sand with a particle size less than 0.83 mm and outputs it , the remaining dry sand with a particle size of less than 0.83mm and without stone powder is transported to the swing screen through the re-screening elevator 8 for screening, and finally the ultra-fine sand is screened out; compared with the existing technology, it can screen out stone powder and ultra-fine sand, and there is no need to discard fine sand, which can effectively utilize raw materials, reduce resource waste and environmental pollution; at the same time, in the screening process, the dry sand is crushed in advance by the crusher, which reduces the number of subsequent classifications, and the dry sand falling from the first sand outlet can directly enter the crusher for the second time, and then be classified and screened, which can better achieve the classification effect, and no additional transportation is required, the work efficiency is higher, and the invalid energy consumption of repeated transportation is reduced; at the same time, the powder classifier can be used to separate stone powder from the dry sand, thereby reducing the stone powder content in the ultra-fine sand, so as to further use the ultra-fine sand.
[0025] In the present invention, it is preferable that the above-mentioned powder classifier 7 is connected to the lower side of the output end of the vibrating feeder 31, and the output end of the powder classifier 7 is connected to the input end of the screening machine 4. A dust removal port connected to the input end of the powder classifier 7 is opened on the outer wall of the powder classifier 7, and the dust removal port of the powder classifier 7 is connected to the above-mentioned dust collector 71 through a dust removal pipe. A collecting device for collecting stone powder is provided below the output end of the dust collector 71. The working mode of the powder classifier and the dust collector is a well-known technology and will not be elaborated here. When used, the dry sand falling from the vibrating feeder 31 is separated into stone powder and ultra-fine sand by the powder classifier 7 and the dust collector 71. The stone powder is output from the powder classifier, and the ultra-fine sand is screened by the screening machine 4. Sorting the stone powder first can avoid the stone powder blocking the screen of the screening machine, which can be beneficial to the subsequent screening of ultra-fine sand and improve the screening efficiency of ultra-fine sand.
[0026] The product form of the present utility model is not limited to the illustrations and embodiments of this case. Any appropriate changes or modifications made by anyone with similar ideas should be deemed to be within the patent scope of the present utility model.
Claims
1. A complete production equipment for ultra-fine sand crushing and grading, comprising a feed hopper, a raw material conveyor, an elevator, a screening machine, and a collecting hopper. The feed hopper is connected to the input end of the raw material conveyor, and the elevator is connected to the screening machine. The screening machine has a large-size screen and a small-size screen, and is provided with a first sand outlet and a second sand outlet corresponding to the output ends of the large-size screen and the small-size screen; the characteristics are: It also includes a crusher, a powder classifier, a re-screening elevator and a re-screening machine. The output end of the raw material belt conveyor and the first sand outlet are connected to the input end of the crusher. The output end of the crusher is connected to the input end of the elevator. The second sand outlet is connected to the input end of the re-screening elevator. The output end of the re-screening elevator is connected to the input end of the re-screening machine. The re-screening machine has a fine screen. The output end of the fine screen is connected to the aggregate hopper. The powder classifier is located between the output end of the elevator and the input end of the screening machine or between the output end of the screening machine and the re-screening elevator.
2. The complete set of production equipment for ultra-fine sand crushing and grading according to claim 1, characterized in that: With the extension direction of the raw material belt conveyor as the left and right direction, the output end of the feed hopper is connected to the left input end of the raw material belt conveyor, and the raw material transfer belt conveyor extending along the left and right directions is connected below the output end of the raw material belt conveyor. The left side of the input end of the crusher is connected below the output end of the raw material transfer belt conveyor, and the raw material transfer belt conveyor is provided with a first iron remover for removing ferromagnetic impurities in the dry sand on the raw material transfer belt conveyor.
3. The complete set of production equipment for ultra-fine sand crushing and grading according to claim 2, characterized in that: A vibrating feeder and a feeding pipe are provided between the input end of the screening machine and the output end of the elevator. The feeding pipe extends in the left and right directions, and the right side of the feeding pipe is connected to the output end of the elevator. The vibrating feeder is located at the lower left side of the feeding pipe, and the input end of the screening machine is located below the output end of the vibrating feeder.
4. The complete production equipment for ultra-fine sand crushing and grading according to claim 3, characterized in that: The screening machine is located outside the upper left side of the feed hopper, the second sand outlet is located on the right bottom surface of the screening machine, the input end of the powder classifier is directly below the second sand outlet, and the powder classifier is located outside the left side of the feed hopper. A dust removal port connected to the input end of the powder classifier is provided on the outer side wall of the powder classifier, and the dust removal port of the powder classifier is connected to a dust collector through a dust removal pipe.
5. The complete set of production equipment for ultra-fine sand crushing and grading according to claim 3, characterized in that: The above-mentioned powder classifier is connected below the output end of the vibrating feeder, and the output end of the powder classifier is connected to the input end of the screening machine.
6. The complete production equipment for ultra-fine sand crushing and grading according to claim 4, characterized in that: The re-screening elevator is erected outside the left side of the powder classifier. The output end of the re-screening elevator is connected to an output pipe, and the output pipe is connected to two branch pipes. The bottom of the two branch pipes is connected to the above-mentioned re-screening machine.
7. The complete production equipment for ultra-fine sand crushing and grading according to claim 6, characterized in that: The re-screening machine is a swing screen.
8. The complete production equipment for ultra-fine sand crushing and grading according to claim 4, characterized in that: The first sand outlet of the screening machine is located on the left bottom surface of the screening machine, and a return pipe and a return belt conveyor are provided between the first sand outlet and the output end of the crusher. The return pipe extends in the left and right directions and is staggered with the powder classifier, and the input end of the return pipe is connected to the first sand outlet, and the output end of the return pipe is connected to the input end of the return belt conveyor. The output end of the return belt conveyor is connected to the right side of the input end of the crusher, and the return belt conveyor is provided with a second iron remover to remove ferromagnetic impurities in the coarse sand on the return belt conveyor.