CN217940418U - Building station sand making line with high dust collection efficiency - Google Patents

Abstract

The utility model provides a building station system sand line that dust collection efficiency is high, a serial communication port, include: a pit is arranged in the ground level downwards, the lower end part of the raw material bin is arranged on one side in the pit, the lower end part of the raw material hoister is arranged on the other side in the pit, and the raw material conveyer belt is positioned in the pit; the sand making machine, the vibration grading sieve, the grading adjusting machine, the feed back belt conveyor and the sieve bottom belt conveyor are all arranged in the first building; the sand-stone powder separator, the wet mixing machine and the finished dry sand belt conveyor are all arranged in the second building body; the first dust collector is arranged on the first building body and is positioned beside the sand making machine; the second dust collector is arranged on the ground level in an overhead manner and is positioned beside the vibrating classifying screen; the third dust collector is arranged on the ground plane in an overhead mode and is located between the sand bin and the powder bin. The utility model discloses each dust collector in building station system sand line is close to the raise dust point, has shortened the pipeline distance that gathers dust, has reduceed the amount of wind loss, has improved dust collection efficiency.

Description

Building station sand making line with high dust collecting efficiency

Technical Field

The utility model relates to a system sand equipment technical field, in particular to building station system sand line that dust collection efficiency is high.

Background

In the sand production line in the prior art, a large-sized high-power dust collector is often used for concentrated dust collection, the power of the large-sized high-power dust collector is usually 60.5 KW-80.5 KW, and the large volume of the large-sized high-power dust collector usually needs to occupy a large installation space independently, so that the occupied area of the whole production line is increased. In addition, because the dust raising points in the sand production line are more, a plurality of branch pipelines are usually arranged to be connected with the high-power dust collector, so that the pipelines are complicated, the distance between the pipelines is longer, the air volume loss is easily caused, and the dust collection efficiency is reduced. In addition, the mineral powder collected by the dust collector needs to be conveyed to a powder elevator through a multi-screw conveyor for lifting, so that the cost and the energy consumption are increased.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a solve above-mentioned problem and go on, aim at provides a building station system sand line that dust collection efficiency is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a building station system sand line that dust collection efficiency is high, a serial communication port, include: the system comprises a first building body, a second building body, a raw material bin, a raw material conveying belt, a raw material hoister, a sand making machine, a vibration grading sieve, a sieve bottom belt conveyor, a feed back belt conveyor, a sand hoister, a sand powder separator, a wet mixing machine, a sand bin, a powder bin, a first dust collector, a second dust collector, a third dust collector, a finished product dry sand hoister, a powder hoister and a finished product dry sand belt conveyor, wherein a pit is arranged with a ground level downward, the lower end part of the raw material bin is arranged on one side of the pit, the lower end part of the raw material hoister is arranged on the other side of the pit, a feeding machine is arranged below the raw material bin, and an outlet of the feeding machine is connected with an inlet at the bottom of the raw material hoister through the raw material conveying belt arranged in the pit; the first building body and the second building body are both arranged on the ground level, the first building body is positioned beside the pit, and the second building body is positioned beside the first building body; the sand material hoister is arranged on the ground plane between the first building body and the second building body, the finished dry sand hoister and the powder hoister are arranged beside the same side of the second building body, the sand bin is arranged beside the finished dry sand hoister, and the powder bin is arranged beside the powder hoister; the sand making machine, the vibration grading sieve, the grading adjusting machine, the feed back belt conveyor and the screen bottom belt conveyor are all arranged in a first building body, an outlet at the top of the raw material lifting machine is connected with an inlet of the sand making machine through a chute, an outlet of the sand making machine is connected with an inlet of the vibration grading sieve through the chute, and the vibration grading sieve is used for correspondingly conveying materials after grading to the raw material lifting machine, the grading adjusting machine and the sand lifting machine; the sand-stone powder separator, the wet mixing machine and the finished dry sand belt conveyor are all arranged in the second building body, the sand-stone powder separator is provided with an inlet, a sand outlet and a powder outlet, the outlet of the sand material hoister is connected with the inlet of the sand-stone powder separator through a chute, the powder outlet is connected with the powder hoister through a chute, and the sand outlet is respectively connected with the finished dry sand belt conveyor and the wet mixing machine; the first dust collector is arranged on the first building body and is positioned beside the sand making machine; the second dust collector is arranged on the ground plane in an overhead manner and is positioned beside the vibration grading screen; the third dust collector is arranged on the ground plane in an overhead mode and is located between the sand bin and the powder bin.

Further, the utility model provides an in the building station system sand line that dust collection efficiency is high, can also have such characteristic: the first dust collector, the second dust collector and the third dust collector all adopt dust collectors of type DMC112, and the power is 7.5KW.

Further, the utility model provides an in the building station system sand line that dust collection efficiency is high, can also have such characteristic: the first floor is provided with a first floor lower platform and a first floor upper platform, the sand making machine and the first dust collector are both positioned on the first floor upper platform, the vibration grading sieve is positioned on the first floor lower platform, and the grading adjusting machine, the feed back belt conveyor and the sieve bottom belt conveyor are all positioned below the first floor lower platform; the second floor body is provided with a second floor lower platform and a second floor upper platform, the sand and stone powder separator is located on the second floor upper platform, and the wet mixing machine and the finished product dry sand belt conveyor are arranged below the second floor lower platform.

Further, the utility model provides an in the building station system sand line that dust collection efficiency is high, can also have such characteristic: wherein, the finished product dry sand hoister and the powder hoister are respectively and directly arranged on the ground level; the powder bin and the sand bin are respectively arranged on the ground plane in an overhead manner.

Further, the utility model provides an among the building station system sand line that dust collection efficiency is high, can also have such characteristic: the vibrating classifying screen is provided with a first-stage outlet, a second-stage outlet, a third-stage outlet and a fourth-stage outlet which are arranged from large to small according to the particle size of the materials obtained by screening; the first-stage outlet is connected with a raw material elevator through a feed back belt conveyor; the second-stage outlet is connected with the grading adjusting machine through a chute; the fourth stage outlet is connected with a sand material elevator through a screen bottom belt conveyor; a third-stage outlet and a third-stage outlet are connected with a coarse sand three-way chute, the coarse sand three-way chute consists of an inlet pipe, a fine sand pipe and a coarse sand pipe, a coarse sand control three-way valve is arranged on the coarse sand three-way chute, and the coarse sand control three-way valve controls the inlet pipe to be communicated with the fine sand pipe or the coarse sand pipe; the fine sand pipe is used for conveying the materials to the screen bottom belt conveyor to be mixed with the materials at the fourth-stage outlet; the coarse sand pipe is used for feeding the material into a chute which is connected with the second-stage outlet and the inlet of the grading adjusting machine, so that the material is mixed with the material of the second-stage outlet.

Further, the utility model provides an in the building station system sand line that dust collection efficiency is high, can also have such characteristic: the dry and wet sand three-way chute is composed of an inlet pipe, a dry sand pipe and a wet sand pipe, a dry and wet sand control three-way valve is arranged on the dry and wet sand three-way chute, and the dry and wet sand control three-way valve controls the inlet pipe to be communicated with the dry sand pipe or the wet sand pipe; the dry sand pipe is connected with a finished product dry sand belt conveyor; the wet sand pipe is connected with the wet stirring machine.

Further, the utility model provides an among the building station system sand line that dust collection efficiency is high, can also have such characteristic: the first dust collector and the second dust collector are respectively provided with an outlet, and the outlets are respectively connected to the screen bottom belt conveyor through elephants.

The utility model discloses an effect and effect:

in the building station sand production line with high dust collection efficiency, three dust collectors are respectively arranged at three key dust raising positions, compared with the prior art that a large dust collector is adopted to collect dust in a centralized manner, the utility model discloses a single dust collector has small power, and the power is reduced; the distance of a dust collection pipeline is shortened by being close to a dust raising point, so that the air volume loss can be effectively reduced, and the dust collection efficiency is higher; each dust collector is reasonable in layout and small in size, and does not independently occupy a large area, so that the overall occupied area of a production line can be saved; and the dust collected by the first dust collector and the second dust collector realizes secondary powder separation and recycling. The utility model discloses building station system sand line that efficiency of gathering dust is high compares prior art, and it is more energy-concerving and environment-protective, resources are saved.

Drawings

Fig. 1 is a first perspective view of a building station sand making line with high dust collection efficiency in an embodiment of the present invention;

fig. 2 is a second perspective view of a building station sand making line with high dust collecting efficiency in the embodiment of the present invention;

fig. 3 is a front view of a building station sand making line with high dust collecting efficiency in the embodiment of the present invention;

fig. 4 is a left side view (not shown) of a building station sand making line with high dust collection efficiency in the embodiment of the present invention;

fig. 5 is a rear view of a building station sand making line with high dust collection efficiency in the embodiment of the present invention;

fig. 6 is a top view of a building station sand making line with high dust collecting efficiency in an embodiment of the present invention; the views of fig. 3 to 6 are based on the direction of the second perspective view of fig. 2.

Reference numerals: 100-ground plane; 200-staff; 300-a first building body; 400-a second building body; 1-raw material bin; 2-raw material conveyer belt; 3-raw material elevator; 4-sand making machine; 5-vibrating a grading screen; 6-grading adjusting machine; 7-a screen bottom belt conveyor; 8-sand elevator; 9-a sandstone powder separator; 10-wet sand pipe; 11-a control center; 12-a wet mixing machine; 13-a sand silo; 14-a powder bin; 15-a first dust collector; 16-a second dust collector; 17-a third dust collector; 18-coarse sand three-way chute; 19-a feed back belt conveyor; 20-finished product dry sand elevator; 21-powder elevator; 22-dust collecting pipeline; 23-dry and wet sand three-way chute; 24-finished product dry sand belt conveyor; 25-a feeder; 26-pit.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are specifically illustrated with reference to the accompanying drawings.

< example >

Referring to fig. 1 to 6, the present embodiment provides a building station sand making line with high dust collection efficiency, which includes: the system comprises a first building 300, a second building 400, a raw material bin 1, a raw material conveyer belt 2, a raw material elevator 3, a sand making machine 4, a vibrating classifying screen 5, a screen bottom belt conveyor 7, a return belt conveyor 19, a sand material elevator 8, a sand powder separator 9, a wet mixing machine 12, a sand bin 13, a powder bin 14, a first dust collector 15, a second dust collector 16, a third dust collector 17, a finished dry sand elevator 20, a powder elevator 21, a finished dry sand belt conveyor 24 and a control center 11.

The building station sand making line with high dust collection efficiency has the advantages that the length of the whole floor area is about 23m and the width is about 12m, and the floor area is about 276 square meters.

As shown in fig. 3, a pit 26 is provided in a horizontal plane downward, a lower end portion of the raw material bin 1 is provided at one side of the pit 26, and a feeder 25 is suspended from a bottom of the raw material bin 1. The lower end of the raw material hoister 3 is arranged at the other side of the pit 26, and the outlet of the feeder 25 is connected with the bottom inlet of the raw material hoister 3 through the raw material conveyer belt 2 arranged in the pit. The raw material conveyer belt 2 is also positioned in the pit, and the top of the pit is covered with an upper cover plate.

The first building 300 and the second building 400 are both arranged on the ground level, the first building 300 is positioned beside the pit, and the second building 400 is positioned beside the first building 300.

The sand material hoister 8 is arranged on the ground level between the first building 300 and the second building 400, and the finished product dry sand hoister 20 and the powder hoister 21 are arranged beside the same side of the second building 400. The sand bin 13 is arranged beside the finished product dry sand lifter 20 and is connected with the top outlet of the finished product dry sand lifter 20 through a chute. The powder bin 14 is arranged beside the powder lifting machine 21 and is connected with the top outlet of the powder lifting machine 21 through a chute. The finished dry sand hoister 20 and the powder hoister 21 are respectively and directly arranged on the ground level, and the powder bin 14 and the sand bin 13 are respectively arranged on the ground level in an overhead manner through the supporting base.

The first building 300 has a first sub-floor platform and a first sub-floor platform. The sand making machine 4 and the first dust collector 15 are both positioned on an upper platform of a first floor, the vibration grading sieve 5 is positioned on a lower platform of the first floor, and the grading adjusting machine 6, the feed back belt conveyor 19 and the sieve bottom belt conveyor 7 are all positioned below the lower platform of the first floor. The top export of raw materials lifting machine 3 is connected with the entry of system sand machine 4 through the chute, and the export of system sand machine 4 is connected with the entry of vibration classifying screen 5 through the chute, and vibration classifying screen 5 is arranged in sending into raw materials lifting machine 3, gradation adjusting machine 6, sand material lifting machine 8 with material correspondence after classifying.

In this embodiment, the vibrating classifying screen 5 has a first stage outlet, a second stage outlet, a third stage outlet and a fourth stage outlet which are arranged from large to small according to the particle size of the material obtained by screening. The vibrating classifying screen 5 is a vibrating screen provided with a plurality of layers of screen meshes from top to bottom, and the screen mesh diameter of the upper layer of screen mesh is larger than that of the lower layer of screen mesh. The vibration classifying screen of the embodiment is provided with a first layer screen, a second layer screen and a third layer screen which are arranged from top to bottom in sequence. The material sieved out by the first layer of screen mesh is a first-stage material and is discharged from a first-stage outlet. And the material screened below the first layer of screen and above the second layer of screen is a second-stage material, and is discharged from a second-stage outlet. And the material screened below the second layer of screen mesh and above the third layer of screen mesh is a third-stage material, and is discharged from a third-stage outlet. The material screened out by the lower part of the third layer of screen mesh is the fourth grade material and is discharged from a fourth grade outlet.

The first-stage outlet is connected with the raw material elevator 3 through a feed back belt conveyor 19.

The second-stage outlet is connected with the grading adjusting machine 6 through a chute. The grading adjustment machine 6 is a device capable of adjusting the grading and fineness modulus of the machine-made sand to enable the continuous grading of the finished sand to reach the index required by a user, and belongs to mandatory crushing. The grading adjuster 6 is a commercially available conventional grading adjuster. The outlet of the grading adjusting machine 6 sends the discharged materials to a feed back belt conveyor 19 through a chute.

The fourth stage outlet is connected with a sand material hoister 8 through a screen bottom belt conveyor 7.

The third level outlet is connected with a coarse and fine sand three-way chute 18, the coarse and fine sand three-way chute 18 is composed of an inlet pipe, a fine sand pipe and a coarse sand pipe, a coarse and fine sand control three-way valve is arranged on the coarse and fine sand three-way chute 18, and the coarse and fine sand control three-way valve controls the inlet pipe to be communicated with the fine sand pipe or the coarse sand pipe. The fine sand pipe is used for conveying the materials to the sieve bottom belt conveyor 7 to be mixed with the materials at the fourth-stage outlet; the coarse sand pipe is used to feed material into a chute connecting the second stage outlet and the inlet of the gradation adjuster 6 so that the material mixes with the material of the second stage outlet.

The second floor 400 has a second lower floor platform and a second upper floor platform. The sand powder separator 9 is positioned on the upper platform of the second floor, and the wet mixing machine 12 and the finished product dry sand belt conveyor 24 are arranged below the lower platform of the second floor. The sand-stone powder separator 9 has an inlet, a sand outlet and a powder outlet. The outlet of the sand material hoister 8 is connected with the inlet of the sand powder separator 9 through a chute. The powder outlet of the sand powder separator 9 is connected with the bottom inlet of the powder lifter 21 through a chute. The sand outlet of the sand-rock powder separator 9 is respectively connected with a dry-wet sand three-way pipe 23, the dry-wet sand three-way pipe 23 is composed of an inlet pipe, a dry sand pipe and a wet sand pipe 10, a dry-wet sand control three-way valve is arranged on the dry-wet sand three-way pipe 23, and the dry-wet sand control three-way valve controls the inlet pipe to be communicated with the dry sand pipe or the wet sand pipe 10. The dry sand pipe is connected with a finished product dry sand belt conveyor 24; the wet sand pipe 10 is connected with a wet mixer 12.

The first dust collector 15 is arranged on the first building 300 and is positioned beside the sand making machine 4. The second dust collector 16 is arranged on a ground plane (the ground plane is a pit upper cover plate) in an overhead manner through a supporting base and is positioned beside the vibrating classifying screen 5. The third dust collector 17 is arranged on the ground level in an overhead mode and is located between the sand bin 13 and the powder bin 14. The first dust collector 15, the second dust collector 16 and the third dust collector 17 are all dust collectors of type DMC112, and the power of the dust collectors of type DMC112 is 7.5KW.

The first dust collector 15 and the second dust collector 16 are respectively provided with an outlet, the outlets are respectively connected to the sieve bottom belt conveyor 7 through an elephant trunk, collected dust materials are conveyed to the sieve bottom belt conveyor 7 through the elephant trunk, then conveyed to the sand material lifter 8 through the sieve bottom belt conveyor 7, and enter the sand powder separator 9 through the sand material lifter 8, so that the collected dust can be subjected to secondary powder separation and recycling.

The control centre 11 is arranged on the ground level, beside the first building 300 and the raw material silo 1. The control center 14 is an electrical control unit assembly of each device in the building station sand making line with high dust collection efficiency in the embodiment.

The production process of the building station sand making line with high dust collection efficiency of the embodiment is as follows:

one specific production case is illustrated below: the grain size of the feed is 0-40 mm, and the finished sand has two specifications: the coarse and wet sand with the diameter of 0-4.75 mm and the dry and fine sand with the diameter of 0-2.36 mm are used for commercial mixing. Under this production condition, the vibration classifying screen adopts the following screen cloth: the mesh aperture of a first layer of screen mesh of the vibration grading screen is 10mm; the mesh aperture of the second layer of screen mesh is 4.75mm; the mesh aperture of the third layer of screen is 2.36mm. Therefore, the grain diameter of the obtained first-stage material is 10 mm-40 mm; the grain diameter of the second-stage material is 4.75 mm-10 mm; the grain diameter of the third-stage material is 2.36 mm-4.75 mm; the grain size of the fourth-stage material is 0-2.36 mm.

Firstly, 0-40 mm of raw materials are added through a raw material bin 1, are fed onto a raw material conveying belt 2 through a feeding machine 25 at the bottom of the raw material bin 1, are conveyed into a raw material lifting machine 3 through the raw material conveying belt 2, are lifted to a high position through the raw material lifting machine 3, and then are fed into a sand making machine 4 to be crushed.

And (3) the material crushed by the sand making machine 4 is fed to a vibration classifying screen 5 for classifying:

(1) The first-stage material of 10 mm-40 mm, which belongs to the material with super large grain diameter, is conveyed back to the raw material elevator 3 by the feed back belt conveyor 19.

(2) The second-stage material with the diameter of 4.75-10 mm enters the grading adjusting machine 6 through the chute. Because the adjustment machine 6 is joined in marriage to the level is the compulsory breakage, so the grain type is not fine, consequently the utility model discloses a material that the production line was beaten the adjustment machine 6 is joined in marriage to the level and first order material mixes and takes 2 to return to raw materials lifting machine 3 by feed back belt feeder 19, reentrant system sand machine 4 carries out circulation breakage, plastic. Thus, a closed cycle working flow of 'raw material lifting machine 3 → sand making machine 4 → vibrating classifying screen 5 → grading adjuster 6 → raw material lifting machine 3' is formed.

(3) The third-stage material with the thickness of 2.36 mm-4.75 mm is formed by a coarse sand three-way chute 18, and the third-stage material can adopt the following flow direction:

when the product purpose is the requirement of commercial sand (coarse sand and wet sand), the coarse sand and fine sand control three-way valve is operated to conduct the inlet pipe and the fine sand pipe. The third-stage material obtained by screening and the fourth-stage material are mixed together, are conveyed to a sand elevator 7 through a screen bottom belt conveyor 7, then enter a sand powder separator 8, and are separated from the redundant mineral powder, and then reach a dry-wet sand three-way chute 23 connected with a sand outlet of the sand powder separator 8. The dry and wet sand control three-way valve is operated to conduct the inlet pipe and the wet sand pipe 10, and the material enters the wet mixing machine 12 to be mixed. The wet mixed materials can be sent to a finished product wet sand storage yard through a conveyer belt or a conveying vehicle to be used for producing commercial concrete.

When the finished product application is the requirement of dry-mixed mortar sand (fine sand and dry sand), the coarse and fine sand control three-way valve is operated to conduct the inlet pipe and the coarse sand pipe. The third-stage material obtained by screening at this time is mixed with the second-stage material and enters a grading adjusting machine 6 for crushing.

(4) The fourth-stage material with the thickness of 0-2.36 mm is conveyed to a sand elevator 7 through a chute, then enters a sand-powder separator 8, the redundant mineral powder is separated, and then the material reaches a dry-wet sand three-way chute 23 connected with a sand outlet of the sand-powder separator 8. The dry and wet sand control three-way valve is operated to conduct the inlet pipe and the dry sand pipe, then the material reaches the finished product dry sand belt conveyor 24, is conveyed to the finished product dry sand elevator 8 through the finished product dry sand belt conveyor 24, and then slides to the sand silo 13 from the finished product dry sand elevator 8 for storage.

The excessive mineral powder selected from the powder outlet of the sand-stone powder separator 8 enters the bottom inlet of the powder elevator 21 through the chute, the powder elevator 21 lifts the mineral powder to a high position, and the mineral powder is finally slid into the powder bin 13 through the chute connected with the top outlet of the powder elevator 21 for storage.

In the working process of the whole production line, the first dust collector 15 collects the dust of the sand making machine 4; the position of the second dust collector 16 is provided with the dust of the vibration grading sieve 5; dust generated when the materials slide to the powder bin 13 from the powder lifter 21 and when the materials slide to the sand bin 14 from the finished dry sand lifter 8 is collected by the third dust collector 17.

The building station sand making line with high dust collection efficiency has the following advantages:

1) In the building station sand making line of the embodiment, three dust collectors are arranged, and the distribution positions of the three dust collectors are close to dust raising points of equipment, so that the distance of a dust collecting pipeline is shorter, and the air volume loss and the dust collecting efficiency reduction caused by overlong pipelines are avoided;

2) In the building station sand making line, the first dust collector 15 and the second dust collector 16 do not need to occupy additional independent sites, so that the total occupied area of the whole set of equipment is reduced.

3) The first dust collector 15 and the second dust collector 16 collect a part of fine sand in the dust collecting process, the part of the collected dust can enter the sand-rock powder separator 9 again for secondary powder separation, the fine sand in the dust can be recycled, and the productivity and quality of the sand are improved.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (7)

1. The utility model provides an efficient building station system sand line gathers dust which characterized in that includes: a first building body, a second building body, a raw material bin, a raw material conveying belt, a raw material lifting machine, a sand making machine, a vibration grading sieve, a sieve bottom belt conveyor, a feed back belt conveyor, a sand material lifting machine, a sand powder separator, a wet mixing machine, a sand bin, a powder bin, a first dust collector, a second dust collector, a third dust collector, a finished dry sand lifting machine, a powder lifting machine and a finished dry sand belt conveyor,

the ground level is provided with a pit downwards, the lower end part of the raw material bin is arranged on one side in the pit, the lower end part of the raw material hoister is arranged on the other side in the pit, a feeder is arranged below the raw material bin, and the outlet of the feeder is connected with the bottom inlet of the raw material hoister through a raw material conveying belt arranged in the pit;

the first building body and the second building body are both arranged on the ground level, the first building body is positioned beside the pit, and the second building body is positioned beside the first building body;

the sand material hoister is arranged on the ground plane between the first building body and the second building body, the finished dry sand hoister and the powder hoister are arranged beside the same side of the second building body, the sand bin is arranged beside the finished dry sand hoister, and the powder bin is arranged beside the powder hoister;

the sand making machine, the vibration grading sieve, the grading adjusting machine, the feed back belt conveyor and the screen bottom belt conveyor are all arranged in the first building body, an outlet at the top of the raw material lifting machine is connected with an inlet of the sand making machine through a chute, an outlet of the sand making machine is connected with an inlet of the vibration grading sieve through a chute, and the vibration grading sieve is used for correspondingly conveying materials into the raw material lifting machine, the grading adjusting machine and the sand lifting machine after grading;

the sand-stone powder separator, the wet mixing machine and the finished dry sand belt conveyor are all arranged in the second building body, the sand-stone powder separator is provided with an inlet, a sand outlet and a powder outlet, an outlet of the sand material hoister is connected with the inlet of the sand-stone powder separator through a chute, the powder outlet is connected with the powder hoister through a chute, and the sand outlet is respectively connected with the finished dry sand belt conveyor and the wet mixing machine;

the first dust collector is arranged on the first building body and is positioned beside the sand making machine;

the second dust collector is arranged on the ground plane in an overhead mode and is positioned beside the vibration grading screen;

the third dust collector is arranged on the ground plane in an overhead mode and is located between the sand bin and the powder bin.

2. The building station sand production line with high dust collecting efficiency according to claim 1, characterized in that:

the first dust collector, the second dust collector and the third dust collector are all dust collectors of type DMC112, and the power is 7.5KW.

3. The building station sand production line with high dust collecting efficiency according to claim 1, characterized in that:

the first building body is provided with a first floor platform and a first floor upper platform, the sand making machine and the first dust collector are positioned on the first floor upper platform, the vibration grading sieve is positioned on the first floor platform, and the grading adjusting machine, the feed back belt conveyor and the screen bottom belt conveyor are positioned below the first floor platform;

the second floor body is provided with a second floor lower platform and a second floor upper platform, the sand and stone powder separator is located on the second floor upper platform, and the wet mixing machine and the finished product dry sand belt conveyor are arranged below the second floor lower platform.

4. The building station sand production line with high dust collecting efficiency according to claim 1, characterized in that:

the finished dry sand hoister and the powder hoister are respectively and directly arranged on the ground level;

the powder bin and the sand bin are arranged on the ground plane in an overhead mode respectively.

5. The building station sand production line with high dust collecting efficiency according to claim 1, characterized in that:

the vibrating classifying screen is provided with a first-stage outlet, a second-stage outlet, a third-stage outlet and a fourth-stage outlet which are arranged from large to small according to the particle size of materials obtained by screening;

the first-stage outlet is connected with the raw material elevator through the feed back belt conveyor;

the second-stage outlet is connected with the grading adjusting machine through a chute;

the fourth-stage outlet is connected with the sand material hoister through the screen bottom belt conveyor;

the third-stage outlet is connected with a coarse sand three-way chute, the coarse sand three-way chute consists of an inlet pipe, a fine sand pipe and a coarse sand pipe, a coarse sand control three-way valve is arranged on the coarse sand three-way chute, and the coarse sand control three-way valve controls the inlet pipe to be communicated with the fine sand pipe or the coarse sand pipe;

the fine sand pipe is used for conveying materials to the sieve bottom belt conveyor to be mixed with the materials at the fourth-stage outlet;

the coarse sand pipe is used for sending materials to a chute which is connected with the second-stage outlet and the inlet of the grading adjusting machine, so that the materials are mixed with the materials of the second-stage outlet.

6. The building station sand production line with high dust collecting efficiency according to claim 1, characterized in that:

wherein the sand outlet of the sand-stone powder separator is connected with a dry-wet sand three-way pipe chute which is composed of an inlet pipe, a dry sand pipe and a wet sand pipe,

a dry and wet sand control three-way valve is arranged on the dry and wet sand three-way chute, and a control inlet pipe of the dry and wet sand control three-way valve is communicated with a dry sand pipe or a wet sand pipe;

the dry sand pipe is connected with the finished product dry sand belt conveyor;

the wet sand pipe is connected with the wet stirring machine.

7. The building station sand production line with high dust collecting efficiency according to claim 1, characterized in that:

the first dust collector and the second dust collector are respectively provided with an outlet, and the outlets are respectively connected to the sieve bottom belt conveyor through elephants.

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