CN107597376A - Machine-made Sand production technology and the production system for implementing the production technology - Google Patents

Abstract

The present invention relates to sand field processed, more particularly to a kind of Machine-made Sand production technology and the production system for implementing the production technology.The Machine-made Sand production system of the present invention includes sand making machine and screening machine, it is provided between sand making machine and screening machine and is used to treat that what sorting material sorted selects powder hierarchy system to sand making machine output, this selects powder hierarchy system to have and treats sorting material import, stone flour delivery outlet and the compound delivery outlet to be sieved with the inlet communication of screening machine.The Machine-made Sand production technology of the present invention is using selecting what powder hierarchy system exported to Machine-made Sand to treat that sorting material sorts.The Machine-made Sand production technology of the present invention and for implementing the production system of the production technology using selecting the powder hierarchy system will to remove dust after sorting material is sorted after sand making machine crushes, reduce the load of screening machine, avoid water content it is larger when dust block screen cloth, reduce the energy consumption of crushing system simultaneously, add system throughput.

Description

Machine-made sand production process and production system for implementing the production process

technical field

The invention relates to the field of sand making, in particular to a machine-made sand production process and a production system for implementing the production process.

Background technique

Manufactured sand refers to sand processed by sand making machines and other auxiliary equipment. Due to the limited resources of natural river sand, and excessive exploitation of river courses will seriously damage the ecological environment of the region, compared with natural river sand, many kinds of stones and tailings are discarded. Resources, etc. can be used to process machine-made sand. There are a wide range of sand sources, and machine-made sand has a complete gradation, which can be adjusted according to sand demand. Therefore, machine-made sand replaces natural sand is the general trend. The machine-made sand production line is usually composed of a feeder, a sand making machine, a vibrating screen and a belt conveyor. The part of the sand that does not meet the particle size requirements re-enters the sand making machine and is crushed again.

In the existing sand-making production line, such as the crushing machine-made sand production line in the invention patent application with the application publication number of CN106583005A, it includes an inclined upward feeding auger, a sand making machine, a spiral discharge device, and a screening machine connected in sequence. device, dedusting device, wet mixing device and sanding device, the raw material is crushed by the sand making machine and sent directly to the screening device by the spiral discharge device for screening, because there is a lot of dust in the material crushed by the sand making machine, so It will increase the load of the screening device. If the water content of the raw material is relatively large, the dust will block the screen, and the small-sized stones produced in the sand making process will be repeatedly crushed and over-grinded, which is not conducive to energy saving.

Contents of the invention

The purpose of the present invention is to provide a machine-made sand production process to solve the technical problems of heavy screening machine load and easy blockage of the screen in the prior art. The present invention also provides a production system for implementing the above production process.

In order to achieve the above purpose, the technical scheme 1 of the machine-made sand production process provided by the present invention: a machine-made sand production process, the raw materials are crushed by the sand making machine to obtain the materials to be sorted, and then the powder selection and classification system receives the materials to be sorted The material is selected and sorted, and the mixture to be screened and the stone powder to be sent into the powder bin are sorted out. Finally, the mixture to be screened is received by the screening machine and screened, and finally the qualified mechanism is obtained. Sand products.

The beneficial effects of the present invention are: in the machine-made sand production process of the present invention, the materials to be sorted after being crushed by the sand making machine are sorted by the powder selection and classification system before entering the screening machine, and the stone powder in the materials to be sorted is directly sent to To the powder bin, greatly reducing the load on the sieving machine, and at the same time avoiding the dust from clogging the screen when the water content is high.

On the basis of the technical scheme 1 of the machine-made sand production process, the technical scheme 2 of the machine-made sand production process is further obtained: when the powder selection and grading system sorts the materials to be sorted, it can also obtain the finished machine-made sand from the powder selection and grading system. Qualified machine-made sand finished materials are output from the material output port. The powder selection and grading system directly outputs the finished machine-made sand material, which reduces the workload of the screening machine.

On the basis of the technical scheme 1 of the machine-made sand production process, the technical scheme 3 of the machine-made sand production process is further obtained: before the raw materials enter the sand making machine, the raw materials are sorted by the powder classifying machine, and the qualified finished machine-made sand is sorted out. material and the material to be crushed to be input into the sand making machine. The powder classifying machine directly outputs the finished machine-made sand material in the raw material, avoids repeated crushing of the finished machine-made sand material, reduces the system load, and thus increases the system output.

On the basis of the technical scheme 3 of the machine-made sand production process, the technical scheme 4 of the machine-made sand production process is further obtained: when the powder classifying machine sorts the raw materials, the dust output port of the powder classifying machine outputs the dust and the machine-made sand finished material The mixture, the dust in the mixture of dust and machine-made sand finished material passes through the corresponding channel through the dust removal and enters the powder bin, and the machine-made sand finished material in the mixture of dust and machine-made sand finished material is sorted by the wind separator and then output. The powder sorting and classifying machine is connected with the dust collector through the corresponding channel to prevent the dust from scattering into the open space and causing pollution, and can directly collect the stone powder.

On the basis of the technical scheme 1 of the machine-made sand production process, the technical scheme 5 of the machine-made sand production process is further obtained: when the screening machine screens the materials to be screened, the unqualified materials screened out by the screening machine are sent to the production line. in the sand machine.

On the basis of any one of the technical schemes 1 to 4 of the machine-made sand production process, the technical scheme 6 of the machine-made sand production process is obtained: performing wet mixing treatment on the finished machine-made sand material.

Technical solution 1 of the machine-made sand production system provided by the present invention: a machine-made sand production system, including a sand making machine and a screening machine, between the sand making machine and the screening machine, there is a sorting machine for outputting the sand making machine. A powder selection and grading system for sorting materials, the powder selection and grading system has an inlet for materials to be sorted, an output for stone powder, and an output for mixed material to be sieved connected to the inlet of the sieving machine.

On the basis of the technical scheme 1 of the machine-made sand production system, a technical scheme 2 of the machine-made sand production system is further obtained: the powder selection and grading system also has an output port of the finished machine-made sand material.

On the basis of the technical scheme 1 or 2 of the machine-made sand production system, the technical scheme 3 of the machine-made sand production system is further obtained: the machine-made sand production system also includes a powder selection classifier for sorting raw materials, a powder selection classifier It has an output port for finished machine-made sand and an output port for materials to be crushed, which is used to communicate with the inlet of the sand making machine.

On the basis of the technical scheme 3 of the machine-made sand production system, the technical scheme 4 of the machine-made sand production system is further obtained: the powder classifier also has a dust output port for outputting a mixture of dust and machine-made sand finished materials, and the dust output The mouth is connected with a dust removal channel.

On the basis of technical solution 4 of the machine-made sand production system, a technical solution 5 of the machine-made sand production system is further obtained: the dust removal channel has a dust outlet for communicating with a dust collector through a wind separator.

On the basis of the technical scheme 1 or 2 of the machine-made sand production system, the technical scheme 6 of the machine-made sand production system is further obtained: the machine-made sand production system also includes a return conveying device, and the return conveying device has a structure for receiving the sieve of the screening machine. The inlet of the separated unqualified material and the outlet connected with the sand making machine.

On the basis of the technical scheme 1 or 2 of the machine-made sand production system, the technical scheme 7 of the machine-made sand production system is further obtained: the powder selection and classification system is located above the sand making machine and the screening machine, and the sand making machine has an output of materials to be sorted There is a belt conveyor and a matching bucket elevator between the sand making machine and the powder selection and classification system, and a dust removal channel is connected to the sand making machine, belt conveyor and bucket elevator.

On the basis of the technical solution 7 of the machine-made sand production system, the technical solution 8 of the machine-made sand production system is further obtained: the dust removal channel has a dust outlet for communicating with a dust collector through a wind separator.

On the basis of the technical scheme 1 or 2 of the machine-made sand production system, the technical scheme 9 of the machine-made sand production system is further obtained: the machine-made sand production system also includes a wet mixer for wet-mixing the finished machine-made sand material. The wet machine is located below the screening machine.

On the basis of the technical scheme 5 or 8 of the machine-made sand production system, the technical scheme 10 of the machine-made sand production system is further obtained: the machine-made sand production system also includes a powder bin for storing stone powder, and the dust collector is provided with a powder bin Connected stone powder outlet.

Description of drawings

Fig. 1 is the overall structure schematic diagram of embodiment 1 of the machine-made sand production system provided by the present invention;

Fig. 2 is a schematic diagram of the overall structure of Embodiment 2 of the machine-made sand production system provided by the present invention.

detailed description

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

The present invention provides an embodiment of the machine-made sand production process. The production process in this embodiment is used to obtain qualified machine-made sand finished materials. The specific production process is as follows:

Firstly, the raw material is crushed by the sand making machine 4 to obtain the material to be sorted, and then the material to be sorted is received and sorted by the powder selection and classification system 7, and the mixed material to be screened and the powder to be fed are sorted out. The stone powder in the bin 13 is finally received and screened by the screening machine 8 to obtain qualified finished machine-made sand materials.

In specific production, when the powder selection and classification system 7 is sorting the materials to be sorted, qualified machine-made sand finished materials can also be output from the machine-made sand finished material output port 72 of the powder selection and classification system.

In addition, in order to avoid repeated crushing and grinding of small particle materials, before the raw materials enter the sand making machine 4, the raw materials can be sorted by the powder classifying machine 3, and the qualified machine-made sand finished materials and the sand making machines to be input can be sorted out. The materials to be crushed in the machine are transported to the sand making machine 4, and the qualified machine-made sand finished materials are directly sorted out.

In practice, when the powder classifying machine 3 sorts the raw materials, the dust output port 31 of the powder classifying machine outputs the mixture of dust and machine-made sand finished material, and the mixture of dust and machine-made sand finished material enters the wind separation through the corresponding channel In the machine 11, the wind power separator 11 sorts and outputs qualified machine-made sand finished materials and stone powder sent into the powder bin 13 after dust removal by the dust collector 12.

Finally, when the screening machine 8 screens the materials to be screened, the qualified finished machine-made sand materials are directly output, and the remaining unqualified materials are sent back to the sand making machine 4 again.

In actual production, in order to better store the finished machine-made sand material in the finished sand bin 20 , the finished machine-made sand material is wet-mixed before being sent into the finished sand bin 20 .

In other embodiments, the finished machine-made sand material can also directly enter the dry-mixed mortar station without wet mixing treatment.

In other embodiments, the raw materials can also be directly sent to the sand making machine for crushing and grinding without being classified by the powder classifier.

Specific embodiment 1 of the machine-made sand production system of the present invention:

The production system provided by this embodiment can be used to implement the above-mentioned machine-made sand production process. The structure of the production system is shown in Figure 1, including a sand making machine 4 and a screening machine 8. For the powder selection and classification system 7 for sorting the materials to be sorted outputted by the sand making machine 4, the powder selection and classification system 7 has an inlet for materials to be sorted, an output port 71 for stone powder, and a screen to be screened connected to the inlet of the screening machine 8. Mixed material outlet 73.

In the above machine-made sand production system, the raw materials are stored in the transition silo 1, and the outlet of the transition silo 1 is connected to the inlet of the first belt conveyor 2 below, and the first belt conveyor 2 can transport the raw materials In the powder classifier 3 for sorting the raw materials obliquely above it.

Powder selecting and classifying machine 3 can sort raw materials into qualified machine-made sand finished materials, materials to be crushed in the sand making machine, and mixture of dust and machine-made sand finished materials. Powder selecting and classifying machine 3 has dust output port 31, mechanism Finished sand material output port 32 and the material output port 33 to be crushed are used to communicate with the inlet of the sand making machine 4, wherein the dust output port 31 is connected to the wind separator 11 through the first dust removal channel 15, under the action of the fan 18 The mixture of dust and machine-made sand finished material enters the first dust removal channel 15 through the dust output port 31. The first dust removal channel 15 has a dust outlet connected to the dust collector 12 through the wind separator 11, and the machine-made sand finished material output port 32 is connected to the mixer The wet machine 9 is connected, and the output port 33 of the material to be crushed is connected with the feed port of the sand making machine 4 below it.

The sand making machine 4 is used to crush the materials to be crushed, and the materials to be sorted after being crushed by the sand making machine 4 are output to the second belt conveyor 5 below the material to be sorted output port 41 at the bottom of the sand making machine 4 .

The discharge port of the second belt conveyor 5 is connected with the bucket elevator 6, and the corresponding sand making machine 4, the second belt conveyor 5 and the bucket elevator 6 are connected with a second dust removal channel 16, and the blower fan 18 The mixture of the dust in the sand making machine 4, the second belt conveyor 5 and the bucket elevator 6 and the machine-made sand finished material enters the second dust removal channel 16, and the second dust removal channel 16 has the function of passing through the wind separator 11 The dust outlet communicated with the dust collector 12.

The bucket elevator 6 includes a bucket 61, a conveying frame 62 and a discharge port 63. After the mixed material to be screened enters the bucket 61, it is lifted to the discharge port 63 above by the conveying frame 62. The discharge port 63 is connected with the powder selection and classification. Feed port connection for system 7.

The powder selection and classification system 7 is located above the sand making machine 4 and the screening machine 8. The powder selection and classification system 7 classifies the mixture to be screened into stone powder with a particle size of less than 0.075mm, machine-made sand products with a particle size of 0.075-3mm and granular materials. If the diameter is larger than 3mm unqualified products, the powder selection and classification system 7 is a powder selection and classification system with dust removal function in the prior art, which can directly remove dust from the sorted stone powder, and the stone powder after dust removal is output by the stone powder output port 71 and sent to In the powder bin 13, part of the finished machine-made sand material is directly sent to the wet mixer 9 after being output from the finished machine-made sand material output port 72, and the remaining mixed material to be screened is sent to the bottom of it through the mixed material output port 73 In the screening machine 8.

The screening machine 8 is used to screen the mixed material to be screened into two types, one is the material whose particles meet the requirements, that is, the finished machine-made sand material, and the finished machine-made sand material is output through the output port 81 of the finished machine-made sand material on the screening machine 8 , and then sent to the wet mixer 9 below it; the other type is the unqualified material that does not meet the requirements of the particles. The unqualified material may also include a small amount of stone powder and machine-made sand finished material. After the material output port 82 is output, it is sent to the feed port of the powder classifier 3 by the return conveying device 14 to form a production circuit, and the primary sorting, crushing and re-sorting are repeated. In addition, in order to avoid pollution caused by dust, the screening machine 7 is connected to the third dust removal channel 17, and the mixture of dust and machine-made sand finished materials enters the third dust removal channel 17 and then enters the wind separator 11 under the action of the fan 18.

The wet mixing machine 9 is located below the screening machine 8, and is used for wet mixing treatment of the finished machine-made sand material to be sent to the finished sand bin 20 through the third belt conveyor 10 for storage.

The wind separator 11 is located in front of the dust collector 12. The wind separator 11 can separate the mixture of the dust and the finished machine-made sand into stone powder and the finished machine-made sand by relying on the wind force, and the stone powder is sent to the dust collector 12. In the process, the machine-made sand finished material is sent to the wet mixer 9. In practical applications, the wind power of the wind separator can be controlled by frequency conversion according to the needs, so as to separate the machine-made sand products of different specifications.

The dust collector 12 communicates with the blower fan 18, and is used for processing the dust after being separated by the wind force separator 11 during the machine-made sand production process.

When using the production system of this embodiment to manufacture machine-made sand, first the raw materials are sent to the powder classifier 3 located obliquely above the first belt conveyor 2 through the transition bin 1 by the first belt conveyor 2 .

Then the powder classifier 3 sorts the raw materials to obtain the finished machine-made sand material, the material to be crushed to be input into the sand making machine 4, and the mixture of dust and finished machine-made sand material, and the finished machine-made sand material is sent into the mixing machine by the corresponding conveying device In the wet machine 9, the material to be crushed is sent to the sand making machine 4 through the material outlet 33 to be crushed, and the mixture of dust and machine-made sand finished material is output through the dust output port 31 on the powder classifier 3 and enters the first dust removal Passage 15, the mixture of dust and machine-made sand finished materials in the first dust removal passage 15 enters the air separator 11, and the wind separator 11 sorts out qualified machine-made sand finished materials and sends them to the wet mixer 9, and the wind separator 11. The stone powder that is sorted out is sent into the powder bin 13 after dedusting by the dust collector 12, and the finished machine-made sand material that is sorted out is sent in the wet mixer 9.

Afterwards, the sand making machine 4 crushes and grinds the materials to be crushed to obtain the materials to be sorted, and the materials to be sorted are sent to the powder selection and classification system 7 by the second belt conveyor 5 and the bucket elevator 6 for sorting. The mixture of part of the dust in the sorted material and the finished machine-made sand material enters the second dust removal channel 16, and the mixture of the dust in the second dust removal channel 16 and the finished machine-made sand material enters the wind separator 11, and the wind separator 11 sorts The qualified machine-made sand finished material is sent to the wet mixer 9, the stone powder sorted out by the wind separator 11 is sent to the powder bin 13 after being dedusted by the dust collector 12, and the sorted machine-made sand finished material is sent to the mixing machine. Wet machine 9 in.

Afterwards, the powder selection and grading system selects the mixture to be screened, stone powder and machine-made sand finished material by 7 points. The stone powder is sent to the powder bin 13 through the screw conveying device, and the machine-made sand finished material is sent to the wet mixer 9 for wet mixing treatment. The mixed material to be screened is sent to the screening machine 8 for screening.

Finally, the sieving machine 8 screens the mixture to be screened, and the obtained machine-made sand finished material, unqualified material and a small amount of dust and the mixture of the machine-made sand finished material are sent to the wet mixer 9 for wet mixing treatment. The unqualified material is sent back to the sand making machine 4 by the return conveying device 14 for repeated crushing and re-sorting. The mixture of dust and finished machine-made sand material enters the third dust removal channel 17, and the dust in the third dust removal channel 17 and the finished machine-made sand product The mixture of raw materials enters the air separator 11, and the qualified machine-made sand finished materials selected by the air separator 11 are sent to the wet mixer 9, and the stone powder selected by the wind separator 11 is sent to the dust collector 12 after being dedusted. Enter the powder bin 13, and the finished machine-made sand material that is sorted out is sent in the wet mixing machine 9.

Finally, the finished machine-made sand material generated during the production process is sent to the finished sand bin 20 by the third belt conveyor 10 after being processed by the wet mixer 9 , and the stone powder generated during the production process is sent into the powder bin 13 .

In other embodiments, the machine-made sand production system may not include a powder classifier.

In this embodiment, the leather conveyor and bucket elevator in the machine-made sand production system are open devices. In other embodiments, the leather conveyor and bucket elevator can also be closed devices.

In other embodiments, the machine-made sand production system may not include a wind separator.

In other embodiments, the stone powder sorted by the powder selection and grading system can also be transported to the powder bin by other conveying devices, such as a transport vehicle.

In other embodiments, the particle classification level of the powder selection and classification system, or the screen mesh level of the screening machine can also be adjusted according to actual needs, so that the final machine-made sand finished material can meet actual requirements.

Specific embodiment 2 of the machine-made sand production system of the present invention:

As shown in Figure 2, the machine-made sand production system in this embodiment includes a dry-mixed mortar station, and does not include a wet mixer compared with Example 1, and the finished machine-made sand material directly enters the dry-mixed mortar station 30 without mixing wet, Other structures are the same as those in Embodiment 1, and will not be repeated here.

Claims (10)

1. A machine-made sand production process, characterized in that: the raw material is crushed by the sand making machine to obtain the material to be sorted, and then the material to be sorted is received by the powder selection and classification system and sorted, and the material to be sorted is sorted out. Sieve the mixed material and the stone powder to be sent into the powder bin, and finally, the sieving machine receives and sieves the mixed material to be screened, and finally obtains qualified machine-made sand finished material. 2. The machine-made sand production process according to claim 1, characterized in that: when the powder-selecting and grading system sorts the materials to be sorted, it can also select from the machine-made sand product output port of the powder-selecting and grading system. Output qualified machine-made sand products. 3. The machine-made sand production process according to claim 1, characterized in that: before the raw materials enter the sand making machine, the raw materials are first sorted by a powder classifier, and the qualified machine-made sand finished materials and materials to be input are sorted out. The material to be crushed in the sand making machine. 4. The machine-made sand production process according to claim 3, characterized in that: when the powder selecting and classifying machine sorts the raw materials, the dust output port of the powder selecting and classifying machine outputs the mixture of dust and machine-made sand finished material, and the dust and machine-made sand are The dust in the mixture of machine-made sand finished materials passes through the corresponding channel and enters the powder bin after dust removal, and the machine-made sand finished materials in the mixture of dust and machine-made sand finished materials are separated by a wind separator and then output. 5. The machine-made sand production process according to claim 1, characterized in that: when the screening machine screens the materials to be screened, the unqualified materials screened out by the screening machine are sent into the sand making machine. 6. The machine-made sand production process according to any one of claims 1 to 4, characterized in that: the finished machine-made sand material is wet-mixed. 7. A machine-made sand production system, comprising a sand making machine and a screening machine, characterized in that: between the sand making machine and the screening machine, there is a powder selection and classification for sorting the materials to be sorted output by the sand making machine system, the powder selection and grading system has an inlet for materials to be sorted, an output for stone powder, and an output for mixed material to be screened that communicates with the inlet of the sieving machine. 8. The machine-made sand production system according to claim 7, characterized in that: the powder selection and grading system also has an output port for finished machine-made sand materials. 9. The machine-made sand production system according to claim 7 or 8, characterized in that: the machine-made sand production system also includes a powder classifier for sorting raw materials, and the powder classifier has machine-made sand finished materials An output port and an output port of the material to be crushed for communicating with the inlet of the sand making machine. 10. The machine-made sand production system according to claim 9, characterized in that: the powder classifier also has a dust output port for outputting a mixture of dust and machine-made sand finished materials, and the dust output port is connected with a dust removal channel .