CN108855547B

CN108855547B - Stone crushing, screening, sand making and dust removing integrated production system

Info

Publication number: CN108855547B
Application number: CN201810761498.1A
Authority: CN
Inventors: 周瑞锋; 李小慧; 曹勃
Original assignee: Henan Zhenyuan Technology Co ltd
Current assignee: Henan Zhenyuan Technology Co ltd
Priority date: 2018-07-12
Filing date: 2018-07-12
Publication date: 2024-03-26
Anticipated expiration: 2038-07-12
Also published as: CN108855547A

Abstract

The invention discloses a stone crushing, screening, sand making and dust removing integrated production system, which comprises a feeding crushing system, a three-section screening system, a sand making system, a dust removing system and a loading system, wherein two return materials impact a lower chute, a return material chute and a discharge port of an impact lower three-way chute correspond to a feed port of a main conveyor belt, a discharge port of an ash planetary air locking valve corresponds to a feed port of a 0-3 mm conveyor belt, and a discharge port of an ash transfer scraper machine corresponds to a feed port of a first transfer conveyor belt; the discharge ports of the conveyor belt conveyors with different granularities correspond to the feed ports of the finished product bins with corresponding granularities, the discharge ports of the tee chute under the transfer conveyor belt conveyor correspond to the feed ports of the first finished product bin, the discharge ports of the conveyor belt conveyors with second transfer conveyor belt conveyors correspond to the feed ports of the second finished product bin, and the discharge ports of the conveyor belt conveyors with finished product sand correspond to the feed ports of the finished product sand bins. The invention has the advantages of higher utilization rate of equipment, small occupied area, convenient production and scheduling, convenient centralized management and important basis for standardized construction of stone production.

Description

Stone crushing, screening, sand making and dust removing integrated production system

Technical field:

the invention relates to a stone production system, in particular to a stone crushing, screening, sand making and dust removing integrated production system, and belongs to the technical field of stone production.

The background technology is as follows:

the existing stone production system comprises a feeding crushing system, a screening system, a sand making system, a dust removing system and a loading system, wherein each system is mutually independent, the occupied area is large, the stone production cost is high, and certain problems and defects exist in each system.

The existing stone production, feeding and crushing system generally adopts a large stone material to be fed into a jaw crusher through a vibrating feeder for primary coarse crushing, and the stone material after primary coarse crushing is fed into a counterattack crusher for secondary fine crushing through a belt conveyor; the stone materials after being finely crushed by the impact crusher are sent to a vibrating screen by a belt conveyor for screening, stones with different particle size specifications are screened out, and stones meeting the particle size requirements are sent to a finished product material pile by a finished product belt conveyor; the stones which do not meet the particle size requirement are returned by the belt conveyor to the impact crusher for crushing again, so that closed-loop multiple circulation is formed. In the prior art, a vibration feeder is used as raw material for conveying a stone production system, and because the feeding capacity of the vibration feeder is limited, the processing capacity of a single crusher is limited, and a plurality of production lines are required to be designed to meet the yield. The occupied area is large, and most of the materials are produced in open air, so that the environmental protection requirement is not met. The impact crusher used in the prior art is a secondary crushing device, and is used for crushing stone returned materials which cannot meet the particle size requirement after being classified by a screening system, and the particle size composition of the stone after being coarsely crushed by the jaw crusher is different from the particle size composition of the stone after being finely crushed by the impact crusher and returned materials which cannot meet the particle size requirement after being classified by the screening system, wherein the particle size of the stone crushed by the primary jaw crusher is generally 150-300 mm, and the particle size of the stone crushed and reshaped by the secondary impact crusher is generally 50-150 mm; and the impact crusher with the same technical parameters cannot effectively exert the equipment performance, and meanwhile, the production capacity of the production line is influenced.

The existing stone production screening classification system generally adopts 1 to 3 layers of vibrating screens to screen out stones with 1 to 4 particle sizes, generally stones with particle sizes of 20 to 30 mm, 10 to 20 mm, 5 to 10 mm and 0 to 5 mm, have fewer particle size types and can not meet market demands. In order to meet the requirement of stones with more particle sizes, the whole production line is generally required to be rebuilt, so that the occupied area is large, the equipment is repeatedly put into, and the existing equipment cannot be effectively utilized. In the actual production process, because the particle sizes of stones are greatly different, the required vibrating screen has different performances, and when stones with large particle sizes are screened, the required vibrating screen has large amplitude and low frequency; when stones with small particle size are screened, the vibration sieve is required to have small amplitude and high frequency; the screening area required for screening large-particle-size stones and small-particle-size stones is also different. In the prior art, stones with larger grain sizes are screened by the same 1 vibrating screen, so that the performance of the vibrating screen cannot be effectively exerted, the actual processing capacity of a single vibrating screen is generally smaller, and a plurality of vibrating screens are commonly arranged in parallel to meet the production capacity and the production efficiency, so that great waste is caused.

In the machine-made sand production system in the prior art, stone with the grain size smaller than 50 mm is generally adopted to enter a sand making machine for crushing, stone crushed by the sand making machine enters a vibrating screen for screening, stone with the grain size smaller than 4.75 mm enters a powder selecting machine for selecting powder, finished sand meeting the grading requirement enters a finished sand bin, ash powder not meeting the grading requirement enters an ash powder bin, and stone with the grain size larger than 4.75 mm enters the sand making machine for crushing again. And meanwhile, dust is collected at the transfer point and the vibrating screen by using a dust remover. The machine-made sand production system in the prior art has the defects of more transfer equipment, large occupied area and unstable quality of finished sand because the quantity of raw materials entering the sand making machine cannot be automatically controlled according to the size of the return material quantity (stone material larger than 4.75 mm) of the vibrating screen.

The existing gate feeder and loading belt conveyor under the finished product bin are used for carrying out dust collection by adopting a dust remover installed on or near the loading belt conveyor, and the collected dust is directly or through a scraper machine unloaded into the loading belt conveyor, so that the quality of finished products of stones is seriously affected, and secondary dust is generated.

The existing stone production finished product stone storage bin usually adopts 1 to 8 finished product stone bins, namely stone with the particle size of 45 to 80 mm, 20 to 30 mm, 10 to 20 mm, 5 to 10 mm, 3 to 5 mm and 0 to 3 mm and machine-made finished product sand, and the general finished product bins are often arranged in a line and occupy larger area. The loading system generally adopts a loading channel arranged under a finished product bin, and loads the finished product by a lower gate of the finished product bin and a bulk machine, so that loading operators and automobile drivers are required to cooperate in the loading process, and faults such as stone overflowing a carriage and the like are often caused in the loading process of the finished product stone. Because each finished product bin is provided with a loading channel, namely, each loading channel can only load one finished product stone, but often, the finished product stone with the grain size of 20-30 mm needs to be loaded with the finished product stone with the grain size of 10-20 mm by the passing grading loading, the finished product stone with the grain size of 5-10 mm needs to be loaded with the finished product stone with the grain size of 10-20 mm by the passing grading loading, and the finished product stone with the grain size of 10-20 mm needs to be loaded with the vehicle for multiple times and transferred to the loading channel under the corresponding finished product bin to finish the grading loading, so that the loading speed is slow, the efficiency is low, more operators are needed, and the cost is high.

The invention comprises the following steps:

the technical problems to be solved by the invention are as follows: the stone crushing, screening, sand making and dust removing integrated production system is high in equipment utilization rate, small in occupied area, convenient to produce and schedule, convenient to centrally manage and capable of providing an important basis for standardized construction of stone production.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the stone crushing, screening, sand making and dedusting integrated production system comprises a feeding crushing system, a three-section screening system, a sand making system, a dedusting system and a loading system, wherein the feeding crushing system comprises a mine car, a receiving bin, a heavy plate feeder, a return scraper conveyor, a return chute, a heavy plate head tee chute, a first jaw crusher, a second jaw crusher, a first impact crusher, a second impact crusher, a lower impact tee chute, a return transfer belt conveyor, a return tee chute, a first return impact crusher, a second return impact crusher, a first return impact lower chute and a second return impact lower chute, the receiving bin is arranged on the heavy plate feeder, the front end discharge port of the heavy plate feeder corresponds to the feed port of the heavy plate head tee chute, the lower return section of the heavy plate feeder corresponds to the feed inlet of the return scraper conveyor, the discharge outlet of the return scraper conveyor corresponds to the feed inlet of the return chute, the discharge outlet of the heavy plate head tee chute corresponds to the discharge outlets of the first jaw crusher and the second jaw crusher respectively, the discharge outlet of the first jaw crusher is connected with the feed inlet of the first impact crusher through the chute, the discharge outlet of the second jaw crusher is connected with the feed inlet of the second impact crusher through the chute, the discharge outlets of the first impact crusher and the second impact crusher correspond to the feed inlet of the impact tee chute respectively, the discharge outlet of the return tee chute corresponds to the feed inlet of the return tee chute respectively, the discharge port of the first return impact crusher corresponds to the feed port of the first return impact lower chute, and the discharge port of the second return impact crusher corresponds to the feed port of the second return impact lower chute; the three-section screening system comprises a main conveying belt conveyor, a primary three-layer vibrating screen, a front chute of more than 80mm, a front three-way chute of 45-80 mm, a return belt conveyor, a front three-way chute of 30-45 mm, a front three-way chute of 20-30 mm, a sand making feeding belt conveyor, a 10-20 mm transfer belt conveyor, a 20-30 mm belt conveyor, a 5-10 mm transfer belt conveyor, a 0-30 mm belt conveyor, a secondary three-layer vibrating screen, a front three-way chute of 10-15 mm, a front three-way chute of 15-20 mm, a front three-way chute of 0-10 mm, a front three-way chute of 8-10 mm, a front three-way chute of 5-8 mm, a front three-way chute of 3-5 mm, a 0-3 mm belt conveyor, a first transfer belt conveyor, a lower three-way chute of 0-3 mm, a second transfer belt conveyor of 3-5 mm, a belt conveyor of 5-10 mm and a 10-20 mm belt conveyor; the discharge port of the main conveyor belt corresponds to the feed port of the primary three-layer vibrating screen, the discharge port of the primary three-layer vibrating screen corresponds to the feed ports of the front-80 mm sieve chute, the front-45 mm sieve three-way chute, the front-20-30 mm sieve three-way chute and the 0-30 mm conveyor belt respectively according to the size of the stone particle size, the discharge port of the front-80 mm sieve chute corresponds to the feed port of the return belt conveyor, the discharge port of the return belt conveyor corresponds to the feed port of the return transfer belt conveyor in the feeding crushing system, the discharge port of the front-45-80 mm sieve tee chute corresponds to the feed port of the 45-80 mm conveying belt conveyor, and the discharge port of the front-30-45 mm sieve tee chute corresponds to the feed ports of the return belt conveyor and the sand-making feeding belt conveyor respectively; the discharge ports of the 0-30 mm belt conveyor correspond to the discharge ports of the secondary three-layer vibrating screen, the discharge ports of the secondary three-layer vibrating screen correspond to the discharge ports of the 20-30 mm front three-way chute, the 10-15 mm front three-way chute and the 0-10 mm conveying belt conveyor respectively according to the size of stone particle sizes, the discharge ports of the 10-20 mm front three-way chute and the 15-20 mm front three-way chute correspond to the discharge ports of the 10-20 mm belt conveyor respectively, the discharge ports of the 10-20 mm front three-way chute and the 15-20 mm front three-way chute correspond to the discharge ports of the 10-20 mm conveying belt conveyor respectively, the discharge ports of the 0-10 mm belt conveyor correspond to the discharge ports of the three-layer vibrating screen, the three-layer vibrating chute correspond to the 3-5 mm front three-way chute, the 3-5 mm front three-way chute and the 3-8 mm three-way chute respectively, the 3-5 mm three-way chute and the 3-5 mm three-way chute respectively correspond to the discharge ports of the 3-5 mm front three-way chute and the 3-5 mm three-way chute respectively, the 3-5 mm three-way chute and the 3-5 mm three-way chute respectively, the discharge port of the lower three-way chute of the transfer belt conveyor corresponds to the feed port of the second transfer belt conveyor with the diameter of 0-3 mm; the sand making system comprises a feed hopper type elevator, a sand making vibrating screen, an under-screen scraper, a finished sand belt conveyor, a sand making buffer bin, a pre-screen scraper, a finished sand hopper type elevator, an electrohydraulic gate, a vibrating distributor front chute, a finished sand hopper type elevator chute, a finished sand lock air valve, a feeding scraper conveyor, a vibrating distributor, a powder selector, a finished sand chute, an upper hopper type elevator, a sand making machine lower chute, an ash powder chute, an upper hopper type elevator chute, a sand making machine and an ash powder planetary lock air valve, wherein the discharge port of the feed hopper type elevator corresponds to the feed port of the sand making buffer bin, the discharge port of the sand making buffer bin corresponds to the feed port of the electrohydraulic gate, the discharge port of the electrohydraulic gate corresponds to the feed port of the upper hopper type elevator, the discharge port of the upper hopper type elevator chute corresponds to the feed port of the sand making machine, the discharge port of the hopper type elevator corresponds to the feed port of the vibrating distributor front chute of the vibrating distributor, the hopper type elevator corresponds to the discharge port of the vibrating distributor front chute of the vibrating distributor, the hopper type elevator corresponds to the feed port of the vibrating distributor front chute of the vibrating distributor respectively, the discharge port of the finished product bucket elevator chute corresponds to the feed port of the powder selecting machine, the discharge port of the powder selecting machine corresponds to the feed ports of the ash powder chute and the finished product sand chute respectively according to the size of discharge grain diameter, the discharge port of the ash powder chute is connected with an ash powder planetary air locking valve through a flange, the discharge port of the finished product sand chute corresponds to the feed port of the finished product sand air locking valve, and the discharge port of the finished product sand air locking valve corresponds to the feed port of the finished product sand belt conveyor; the dust removing system comprises a feeding crushing dust remover, a vibrating screen dust remover, a sand making system dust remover, a dust remover transfer scraper, a dust remover scraper, a first loading dust remover, a second loading dust remover, a dust remover on a storage bin, a loading dust remover scraper, a dust hopper type lifter and a dust powder transfer scraper, wherein the feeding crushing dust remover is connected with a feed inlet of the dust remover scraper through 4 dust discharging valves, the vibrating screen dust remover is also connected with a feed inlet of the dust remover scraper through 4 dust discharging valves, the sand making system dust remover is connected with a feed inlet of the dust remover scraper through 2 dust discharging valves, a discharge outlet of the dust remover scraper is respectively connected with the dust remover transfer scraper, the first loading dust remover, the second loading dust remover and the feed inlet of the dust remover on the storage bin according to the size of dust particle diameter, and the first loading dust remover, the second loading dust remover and the feed inlet of the dust hopper type lifter are respectively connected with the dust hopper type lifter; the loading system comprises a 45-80 mm finished product bin, a 10-20 mm finished product bin, a 20-30 mm finished product bin, a 5-10 mm finished product bin, a 3-5 mm finished product bin, a 0-3 mm finished product first bin, a 0-3 mm finished product second bin, a finished product sand bin, a 0-3 mm lower belt conveyor, a 0-5 mm lower belt conveyor, a 5-30 mm lower belt conveyor, a 10-80 mm lower belt conveyor, a first loading belt conveyor, a first bulk loader, a first wagon balance, a second bulk loader, a second loading belt conveyor and a second wagon balance, the discharge ports of the 45-80 mm finished product bin and the 10-20 mm finished product bin correspond to the feed port of the 10-80 mm lower belt conveyor, the discharge ports of the 20-30 mm finished product bin and the 5-10 mm finished product bin correspond to the feed port of the 5-30 mm lower belt conveyor, the 3-5 mm lower belt conveyor and the 0-3 mm finished product bin correspond to the discharge port of the 0-3 mm lower belt conveyor, the first loading belt conveyor corresponds to the 0-80 mm lower belt conveyor, the first loading belt conveyor corresponds to the first loading belt conveyor and the second loading belt conveyor corresponds to the 0-80 mm lower belt conveyor, the discharge port of the 45-80 mm finished product bin and the 10-20 mm finished product bin corresponds to the discharge port of the 10-80 mm finished product bin corresponds to the feed port of the 5-80 mm lower belt conveyor, the first loading conveyor corresponds to the first loading belt conveyor and the first loading conveyor corresponds to the 0-80 mm lower belt conveyor and the second loading conveyor corresponds to the discharge port of the 5mm lower belt conveyor, and the first loading conveyor corresponds to the 5mm lower belt conveyor and the discharge hopper and the 5 mm-30 mm lower belt conveyor corresponds to the discharge hopper and the 5mm lower belt conveyor corresponds to the 5mm lower hopper.the 5 mm.

The discharge ports of the first returning material impact breaking down chute, the second returning material impact breaking down chute, the return chute and the impact breaking down three-way chute correspond to the feed inlet of the main conveyor belt; the discharge port of the ash powder planetary air locking valve corresponds to the feed port of the 0-3 mm conveying belt conveyor, the discharge port of the dust remover transfer scraper machine corresponds to the feed port of the 0-3 mm conveying belt conveyor, and the discharge port of the ash powder transfer scraper machine corresponds to the feed port of the 0-3 mm first transfer belt conveyor; the discharge port of the 45-80 mm conveyor belt corresponds to the feed port of the 45-80 mm finished product bin, the discharge port of the 20-30 mm conveyor belt corresponds to the feed port of the 20-30 mm finished product bin, the discharge port of the 5-10 mm transfer conveyor belt corresponds to the feed port of the 5-10 mm finished product bin, the discharge port of the 3-5 mm conveyor belt corresponds to the feed port of the 3-5 mm finished product bin, the discharge port of the lower three-way chute of the transfer conveyor belt corresponds to the feed port of the 0-3 mm finished product first bin, the discharge port of the 0-3 mm second transfer conveyor belt corresponds to the feed port of the 0-3 mm finished product second bin, and the discharge port of the finished product sand belt corresponds to the feed port of the finished product sand bin.

The invention has the following positive beneficial effects:

1. the invention adopts a three-section screening and grading system, can fully exert the performance of the vibrating screen, improves the screening efficiency and the production capacity, is convenient for the modularized design of the screening system, ensures that the stone production screening and grading system is convenient for site construction while saving energy and protecting environment and reducing cost, and provides important basis for standardized construction of the stone production screening system.

2. The 45-80 mm-diameter stone produced by the invention is used for iron and steel enterprises, 30-45 mm-diameter stone is the best material for a sand making system, 20-30 mm-diameter stone is used for high-speed rail construction projects, 20-30 mm-diameter stone is used for commercial concrete mixing stations, 10-20 mm-diameter stone is used for highway construction projects, 5-10 mm-diameter stone is used for construction enterprises, 3-5 mm-diameter stone is used for machine brick, and 0-3 mm-diameter stone is used for tunnel guniting.

3. The invention adopts the building type arrangement, reduces the occupied area, is convenient for dust collection of a dust remover, can fully exert the performance of the sand making machine, improves the production capacity and the quality of finished sand, is convenient for the modularized design of a machine-made sand production system, ensures that the machine-made sand production system is convenient for site construction while saving energy, protecting environment and reducing cost, and provides important basis for standardized construction of the machine-made sand production system.

4. According to the invention, the dust is respectively discharged into the corresponding dust scraper machine through the loading dust remover and the discharger below the dust remover on the bin, the dust is conveyed into the 0-3 mm transfer belt conveyor on the finished product bin through the dust bucket elevator and the dust transfer scraper machine, and the dust is conveyed into the 0-3 mm stone finished product bin through the 0-3 mm transfer belt conveyor, so that the dust does not need to construct a special dust bin, the dust can be sold together with the 0-3 mm finished stone, and the sales income is increased while the quality of the 0-3 mm finished stone is improved.

5. According to the loading system, 8 bins are arranged in two rows and are arranged in parallel, loading operation is carried out through the loading belt conveyor, the wagon balance is arranged below the vehicle in the loading channel, the vehicle is stationary on the wagon balance, the vehicle does not need to be moved in the whole loading process, the loading efficiency is high, loading points are concentrated to one place, the centralized installation of loading dust collectors and the construction of loading plants are convenient, the occupied area is small, and the management is convenient.

6. The invention has the advantages of higher utilization rate of equipment, small occupied area, convenient production and scheduling, convenient centralized management and important basis for standardized construction of stone production.

Description of the drawings:

FIG. 1 is a block diagram of the overall structural connection of the present invention;

FIG. 2 is a block diagram illustrating the structural connections of the feed crushing system of FIG. 1;

FIG. 3 is a block diagram of a structural connection of the three-stage screening system of FIG. 1;

FIG. 4 is a block diagram of a structural connection of the sand making system of FIG. 1;

FIG. 5 is a block diagram showing the structural connections of the dust removal system of FIG. 1;

fig. 6 is a block diagram of a structural connection of the loading system of fig. 1.

The specific embodiment is as follows:

the invention is further illustrated and described below with reference to the accompanying drawings and specific examples:

examples: referring to fig. 1 to 6, the stone crushing, screening, sand making and dust removing integrated production system comprises a feeding crushing system, a two-stage screening system, a sand making system, a dust removing system and a loading system.

The feeding crushing system comprises a mine car 1, a receiving bin 2, a heavy plate feeder 3, a return scraper conveyor 4, a return chute 5, a heavy plate head three-way chute 6, a first jaw crusher 7, a second jaw crusher 8, a first impact crusher 9, a second impact crusher 10, an impact lower three-way chute 11, a return transfer belt conveyor 12, a return three-way chute 13, a first return impact crusher 14, a second return impact crusher 15, a first return impact lower chute 16 and a second return impact lower chute 17, wherein the receiving bin 2 is arranged on the heavy plate feeder 3, a front end discharge port of the heavy plate feeder 3 corresponds to a feed port of the heavy plate head three-way chute 6, a lower return section of the heavy plate feeder 3 corresponds to a feed port of the return scraper conveyor 4, the discharge port of the return scraper conveyor 4 corresponds to the feed port of the return chute 5, the discharge port of the heavy plate head three-way chute 6 corresponds to the discharge ports of the first jaw crusher 7 and the second jaw crusher 8 respectively, the discharge port of the first jaw crusher 7 is connected with the feed port of the first back-impact crusher 9 through the chute, the discharge port of the second jaw crusher 8 is connected with the feed port of the second back-impact crusher 10 through the chute, the discharge ports of the first back-impact crusher 9 and the second back-impact crusher 10 correspond to the feed port of the back-impact lower three-way chute 11 respectively, the discharge port of the back-impact transfer belt conveyor 12 corresponds to the feed port of the back-impact three-way chute 13, the discharge port of the back-impact three-way chute 13 corresponds to the feed port of the first back-impact crusher 14 and the second back-impact crusher 15 respectively, the discharge port of the first return impact crusher 14 corresponds to the feed port of the first return impact lower chute 16, and the discharge port of the second return impact crusher 15 corresponds to the feed port of the second return impact lower chute 17.

The three-section screening system comprises a main conveyor belt 18, a primary three-layer vibrating screen 19, a front-80 mm chute 20, a front-45-80 mm three-way chute 21, a front-45-mm three-way chute 22, a return conveyor belt 23, a front-30 mm three-way chute 24, a front-20-30 mm three-way chute 25, a sand making feeding conveyor belt 26, a transfer conveyor belt 27 of 10-20 mm, a conveyor belt 28 of 20-30 mm, a transfer conveyor belt 29 of 5-10 mm, a conveyor belt 30 of 0-30 mm, a secondary three-layer vibrating screen 31, a front-10-15 mm three-way chute 32, a front-15-20 mm three-way chute 33, a front-0-10 mm chute 34, a three-layer vibrating screen 35, a front-8-10 mm three-way chute 36, a front-5 mm three-way chute 37, a front-3 mm conveyor belt 39, a first transfer conveyor belt 40 of 0-3 mm, a transfer conveyor belt 41 of 0-3 mm, a second transfer conveyor belt 42 of 3mm, a conveyor belt 43-5 mm, a conveyor belt 44 of 5-10 mm, and a conveyor belt 44 of 10-10 mm; the discharge port of the main conveyor belt 18 corresponds to the feed port of the primary three-layer vibrating screen 19, the discharge port of the primary three-layer vibrating screen 19 corresponds to the feed ports of the front-80 mm chute 20, the front-45-mm three-way chute 21, the front-30-mm three-way chute 24, the front-20-30-mm three-way chute 25 and the 0-30-mm conveyor belt 30 according to the size of the stone particle size, the discharge port of the front-80-mm chute 20 corresponds to the feed port of the return conveyor belt 23, the discharge port of the return conveyor belt 23 corresponds to the feed port of the return conveyor belt 12 in the feeding crushing system, the two discharge ports of the front-45-80-mm three-way chute 21 correspond to the feed ports of the 45-80-mm conveyor belt 22 and the sand-making feed conveyor belt 26, and the two discharge ports of the front-30-45-mm three-way chute 24 correspond to the feed ports of the return conveyor belt 23 and the sand-making feed conveyor belt 26; the discharge port of the 0-30 mm belt conveyor 30 corresponds to the feed port of the secondary three-layer vibrating screen 31, the discharge port of the secondary three-layer vibrating screen 31 corresponds to the feed ports of the 20-30 mm pre-screen three-way chute 25, the 10-15 mm pre-screen three-way chute 32, the 15-20 mm pre-screen three-way chute 33 and the 0-10 mm belt conveyor 34 respectively according to the size of the stone particle size, the two discharge ports of the 20-30 mm pre-screen three-way chute 25 correspond to the feed ports of the 20-30 mm conveying belt conveyor 28 and the sand-making feeding belt conveyor 26 respectively, the two discharge ports of the 10-15 mm pre-screen three-way chute 32 and the 15-20 mm pre-screen three-way chute 33 correspond to the feed ports of the 10-20 mm conveying belt conveyor 45 and the sand-making feeding belt conveyor 26 respectively, the discharge port of the 10-20 mm belt conveyor 45 corresponds to the feed port of the 10-20 mm transfer belt conveyor 27, the feed inlet of the 0-10 mm conveyor belt 34 corresponds to the feed inlet of the three-layer vibrating screen 35, the discharge outlet of the three-layer vibrating screen 35 is respectively connected with the 3-5 mm pre-screen three-way chute 38, the 5-8 mm pre-screen three-way chute 37, the 8-10 mm pre-screen three-way chute 36 and the feed inlet of the 0-3 mm conveyor belt 39 according to the size of the stone particle size, the two discharge outlets of the 3-5 mm pre-screen three-way chute 38 respectively correspond to the feed inlets of the 3-5 mm conveyor belt 43 and the sand-making feeding belt 26, the two discharge outlets of the 5-8 mm pre-screen three-way chute 37 and the 8-10 mm pre-screen three-way chute 36 respectively correspond to the feed inlets of the 5-10 mm conveyor belt 44 and the sand-making feeding belt 26, the discharge port of the 0-3 mm belt conveyor 39 corresponds to the feed port of the 0-3 mm first transfer belt conveyor 40, the discharge port of the 0-3 mm first transfer belt conveyor 40 corresponds to the feed port of the transfer belt conveyor lower three-way chute 41, and the two discharge ports of the transfer belt conveyor lower three-way chute 41 correspond to the feed ports of the 0-3 mm second transfer belt conveyor 42 and the 0-3 mm finished product first bin 80 respectively.

The sand making system comprises a feed hopper type lifter 95, a sand making vibrating screen 96, an under-screen scraper 97, a finished sand belt conveyor 46, a sand making buffer bin 47, a pre-screen scraper 48, a finished sand hopper type lifter 49, an electrohydraulic gate 50, a vibrating distributor front chute 51, a finished sand hopper type lifter chute 52, a finished sand locking valve 53, a feeding scraper conveyor 54, a vibrating distributor 55, a powder selecting machine 56, a finished sand chute 57, a feeding hopper type lifter 58, a sand making machine lower chute 59, an ash powder chute 60, a feeding hopper type lifter chute 61, a sand making machine 62 and an ash powder planetary locking valve 63, wherein the discharge port of the feeding hopper type lifter 95 corresponds to the feed port of the sand making buffer bin 47, the discharge port of the sand making buffer bin 47 corresponds to the feed port of the electrohydraulic gate 50, the discharge port of the electrohydraulic gate 50 corresponds to the feed port of the feeding scraper conveyor 54, the discharge port of the feeding hopper type lifter 58, the feeding hopper type lifter 58 corresponds to the feeding port of the feeding scraper conveyor 58, the feeding hopper type lifter 58 corresponds to the feeding hopper type lifter 62 corresponds to the discharge port of the feeding hopper conveyor 62, the feeding port of the vibrating distributor 51 corresponds to the discharge port of the vibrating distributor 55, the discharge port of the sand making vibrating screen 96 corresponds to the feed ports of the under-screen scraper 97 and the pre-screen scraper 48 respectively according to the size of the stone particle size, the discharge port of the pre-screen scraper 48 corresponds to the feed port of the upper hopper lifter 58, the discharge port of the under-screen scraper 97 corresponds to the feed port of the finished product hopper lifter 49, the discharge port of the finished product hopper lifter 49 corresponds to the feed port of the finished product hopper lifter chute 52, the discharge port of the finished product hopper lifter chute 52 corresponds to the feed port of the powder selecting machine 56, the ash outlet and the finished product sand discharge port of the powder selecting machine 56 correspond to the feed ports of the ash chute 60 and the finished product sand chute 57 respectively, the discharge port of the ash chute 60 is connected with the ash planetary air locking valve 63 through a flange, the discharge port of the finished product sand chute 57 corresponds to the feed port of the finished product sand air locking valve 53, and the discharge port of the finished product sand air locking valve 53 corresponds to the feed port of the finished product belt conveyor 46.

The dust pelletizing system includes broken dust remover 64 of material loading, shale shaker dust remover 65, system sand dust remover 66, dust remover transfer scraper machine 67, dust remover scraper machine 68, first loading dust remover 69, second loading dust remover 70, on-bin dust remover 71, loading dust remover scraper machine 72, on-bin dust remover scraper machine 73, ash bucket elevator 74 and ash powder transfer scraper machine 75, the broken dust remover 64 of material loading pass through 4 ash discharge valves with the feed inlet of dust remover scraper machine 68 is connected, shale shaker dust remover 65 also passes through 4 ash discharge valves with the feed inlet of dust remover scraper machine 68 is connected, system sand dust remover 66 pass through 2 ash discharge valves with the feed inlet of dust remover scraper machine 68 is connected, the discharge gate of dust remover scraper machine 68 with the feed inlet of dust remover transfer scraper machine 67 is connected, the discharge gate of first loading dust remover 69, second loading dust remover 70 respectively pass through 2 ash discharge valves with the hopper elevator machine 74 of loading dust bucket elevator machine 74 is connected with the feed inlet of dust bucket elevator machine 74, the discharge gate is connected with the feed inlet of hopper elevator machine 74.

The loading system comprises a 45-80 mm finished product bin 98, a 10-20 mm finished product bin 76, a 20-30 mm finished product bin 77, a 5-10 mm finished product bin 78, a 3-5 mm finished product bin 79, a 0-3 mm finished product first bin 80, a 0-3 mm finished product second bin 81, a finished product sand bin 82, a 0-3 mm under-bin belt conveyor 83, a 0-5 mm under-bin belt conveyor 84, a 5-30 mm under-bin belt conveyor 85, a 10-80 mm under-bin belt conveyor 86, a first loading belt conveyor 87, a first bulk machine 88, a first wagon balance 89, a second bulk machine 90, a second loading belt conveyor 91 and a second wagon balance 92, the discharge ports of the 45-80 mm finished product bin 98 and the 10-20 mm finished product bin 76 correspond to the feed ports of the 10-80 mm under-belt conveyor 86, the discharge ports of the 20-30 mm finished product bin 77 and the 5-10 mm finished product bin 78 correspond to the feed ports of the 5-30 mm under-bin belt conveyor 85, the discharge ports of the 3-5 mm finished product bin 79 and the 0-3 mm finished product first bin 80 correspond to the feed port of the 0-5 mm under-bin belt conveyor 84, the discharge ports of the 0-3 mm finished product second bin 81 and the finished product sand bin 82 correspond to the feed port of the 0-3 mm under-bin belt conveyor 83, the discharge ports of the 5-30 mm under-bin belt conveyor 85 and the 10-80 mm under-bin belt conveyor 86 correspond to the feed port of the first loading belt conveyor 87, the discharge port of the first loading belt conveyor 87 corresponds to the feed port of the first bulk machine 88, the first bulk machine 88 corresponds to the first wagon balance 89, the discharge ports of the 0-3 mm under-bin belt conveyor 83 and the 0-5 mm under-bin belt conveyor 84 correspond to the feed port of the second loading belt conveyor 91, the discharge port of the second loading belt conveyor 91 corresponds to the feed port of the second bulk machine 90, the second bulk machine 90 corresponds to the second wagon balance 92; all the discharging ports of the finished product bins are connected with the feeding ports of the belt conveyors under the corresponding bins through gate funnels and feeders. The bulk machine may be a mobile bulk material loader.

Wherein: the discharge ports of the first returning material impact breaking chute 16, the second returning material impact breaking chute 17, the returning material chute 5 and the impact breaking three-way chute 11 correspond to the feed inlet of the main conveyor belt 18; the discharge port of the ash planetary air locking valve 63 corresponds to the feed port of the 0-3 mm belt conveyor 39, the discharge port of the dust remover transfer scraper 67 corresponds to the feed port of the 0-3 mm belt conveyor 39, and the discharge port of the ash transfer scraper 75 corresponds to the feed port of the 0-3 mm first transfer belt conveyor 40; the discharge port of the 45-80 mm conveyor belt 22 corresponds to the feed port of the 45-80 mm finished product bin 98, the discharge port of the 20-30 mm conveyor belt 28 corresponds to the feed port of the 20-30 mm finished product bin 77, the discharge port of the 5-10 mm transfer conveyor belt 29 corresponds to the feed port of the 5-10 mm finished product bin 78, the discharge port of the 3-5 mm conveyor belt 43 corresponds to the feed port of the 3-5 mm finished product bin 79, the two discharge ports of the transfer conveyor belt lower three-way chute 41 correspond to the feed ports of the 0-3 mm finished product first bin 80 and the 0-3 mm second transfer conveyor belt 42, the discharge port of the 0-3 mm second transfer conveyor belt 42 corresponds to the feed port of the 0-3 mm finished product second bin 81, and the discharge port of the finished product sand conveyor belt 46 corresponds to the feed port of the finished product sand bin 82.

The invention adopts a three-section screening and grading system, can fully exert the performance of the vibrating screen, improves the screening efficiency and the production capacity, is convenient for the modularized design of the screening system, ensures that the stone production screening and grading system is convenient for site construction while saving energy and protecting environment and reducing cost, and provides important basis for standardized construction of the stone production screening system.

The 45-80 mm-diameter stone produced by the invention is used for iron and steel enterprises, 30-45 mm-diameter stone is the optimal material for a sand making system, 20-30 mm-diameter stone is used for high-speed rail construction projects, 20-30 mm-diameter stone is used for commercial concrete mixing stations, 10-20 mm-diameter stone is used for highway construction projects, 5-10 mm-diameter stone is used for construction enterprises, 3-5 mm-diameter stone is used for machine brick, 0-3 mm-diameter stone is used for tunnel guniting, and finished sand is used for a dry powder mortar production line.

The invention adopts the building type arrangement, reduces the occupied area, is convenient for dust collection of a dust remover, can fully exert the performance of the sand making machine, improves the production capacity and the quality of finished sand, is convenient for the modularized design of a machine-made sand production system, ensures that the machine-made sand production system is convenient for site construction while saving energy, protecting environment and reducing cost, and provides important basis for standardized construction of the machine-made sand production system.

According to the invention, the dust is respectively discharged into the corresponding dust scraper machine through the loading dust remover and the discharger below the dust remover on the bin, the dust is conveyed into the 0-3 mm transfer belt conveyor on the finished product bin through the dust bucket elevator and the dust transfer scraper machine, and the dust is conveyed into the 0-3 mm stone finished product bin through the 0-3 mm transfer belt conveyor, so that the dust does not need to construct a special dust bin, the dust can be sold together with the 0-3 mm finished stone, and the sales income is increased while the quality of the 0-3 mm finished stone is improved.

According to the loading system, 8 bins are arranged in two rows and are arranged in parallel, loading operation is carried out through the loading belt conveyor, the wagon balance is arranged below the vehicle in the loading channel, the vehicle is stationary on the wagon balance, the vehicle does not need to be moved in the whole loading process, the loading efficiency is high, loading points are concentrated to one place, the centralized installation of loading dust collectors and the construction of loading plants are convenient, the occupied area is small, and the management is convenient.

The invention has the advantages of higher utilization rate of equipment, small occupied area, convenient production and scheduling, convenient centralized management and important basis for standardized construction of stone production.

Claims

1. The utility model provides a building stones crushing screening system sand dust removal integrated production system, includes broken system of material loading, three section screening system, system sand, dust pelletizing system and loading system, its characterized in that: the feeding crushing system comprises a mine car (1), a receiving bin (2), a heavy plate feeder (3), a return scraper conveyor (4), a return chute (5), a heavy plate head three-way chute (6), a first jaw crusher (7), a second jaw crusher (8), a first impact crusher (9), a second impact crusher (10), a lower impact three-way chute (11), a return transfer belt conveyor (12), a return three-way chute (13), a first return impact crusher (14), a second return impact crusher (15), a first return impact lower chute (16) and a second return impact lower chute (17), wherein the receiving bin (2) is arranged on the heavy plate feeder (3), the front end discharge port of the heavy plate feeder (3) corresponds to the feed port of the heavy plate head three-way chute (6), the lower section of the plate feeder (3) corresponds to the return chute (7) of the return scraper conveyor, the return chute (8) corresponds to the discharge port of the heavy plate feeder (4), the return chute (8) corresponds to the return chute (6), the discharge port of the first jaw crusher (7) is connected with the feed port of the first impact crusher (9) through a chute, the discharge port of the second jaw crusher (8) is connected with the feed port of the second impact crusher (10) through a chute, the discharge ports of the first impact crusher (9) and the second impact crusher (10) respectively correspond to the feed port of the impact lower three-way chute (11), the discharge port of the return transfer belt conveyor (12) corresponds to the feed port of the return three-way chute (13), the discharge port of the return three-way chute (13) respectively corresponds to the feed ports of the first return impact crusher (14) and the second return impact crusher (15), the discharge port of the first return impact crusher (14) corresponds to the feed port of the first return lower three-way chute (16), and the discharge port of the second return crusher (15) corresponds to the feed port of the return lower three-way chute (17); the three-section screening system comprises a main belt conveyor (18), a primary three-layer vibrating screen (19), a front-80-millimeter-screen chute (20), a front-45-80-millimeter-screen three-way chute (21), a front-45-80-millimeter-screen belt conveyor (22), a return belt conveyor (23), a front-30-45-millimeter-screen three-way chute (24), a front-20-30-millimeter-screen three-way chute (25), a sand-making feeding belt conveyor (26), a transfer belt conveyor (27) of 10-20 millimeters, a belt conveyor (28) of 20-30 millimeters, a transfer belt conveyor (29) of 5-10 millimeters, a belt conveyor (30) of 0-30 millimeters, a three-layer vibrating screen (31) of two-times, a three-way chute (32) of 10-15 millimeters-sieve, a front-20 millimeter-screen three-way chute (33), a front-0-10 millimeter-screen three-way chute (35), a front-8-10 millimeter-shaped three-way chute (36), a front-5-8 millimeter-screen three-way chute (37), a front-3-5 millimeter-shaped three-way chute (38), a belt conveyor (39) of 0-3 millimeter-to a first transfer belt conveyor (40), a transfer belt conveyor (40) of 0-3 millimeter-to 5 millimeter-to be, a transfer belt conveyor (42) of 3-millimeter-to be, a third belt conveyor (41) of the three-millimeter and a belt conveyor (42) of the three-millimeter (42); the discharge port of the primary three-layer vibrating screen (19) corresponds to the feed port of the primary three-layer vibrating screen (19), the discharge port of the primary three-layer vibrating screen (19) corresponds to the feed port of the return transfer belt conveyor (12) in the feeding crushing system according to the size of stone particle size, the two discharge ports of the 45-80 mm front three-way chute (21) correspond to the feed ports of the 45-80 mm belt conveyor (22) and the sand making feeding belt conveyor (26) respectively, the discharge port of the 30-30 mm front three-way chute (25) corresponds to the feed port of the return belt conveyor (23), and the discharge port of the 30-45 mm front three-way chute (20) corresponds to the feed port of the return belt conveyor (23) respectively, and the two discharge ports of the 45-80 mm front three-way chute (21) correspond to the feed ports of the 45-80 mm belt conveyor (22) and the sand making feeding belt conveyor (26) respectively; the discharge port of the 0-30 mm belt conveyor (30) corresponds to the feed port of the secondary three-layer vibrating screen (31), the discharge port of the secondary three-layer vibrating screen (31) corresponds to the feed port of the 20-30 mm front three-way chute (25), the 10-15 mm front three-way chute (32), the 15-20 mm front three-way chute (33), the feed port of the 0-10 mm belt conveyor (34), the two discharge ports of the 20-30 mm front three-way chute (25) correspond to the feed port of the 20-30 mm belt conveyor (28), the sand making feeding belt conveyor (26), the two discharge ports of the 10-15 mm front three-way chute (32) and the 15-20 mm front three-way chute (33) correspond to the feed port of the 10-20 mm front three-way chute (45), the sand making feeding belt conveyor (26), the discharge port of the 10-20 mm front three-way chute (45) corresponds to the feed port of the 10-20 mm rotary belt conveyor (27), the three-way chute (35) corresponds to the three-layer three-way chute (35) of the 3-5 mm front three-way chute (35), the three-layer vibrating screen (37) and the three-layer vibrating screen (35), two discharge ports of the 3-5 mm pre-sieve three-way chute (38) correspond to the feed ports of the 3-5 mm belt conveyor (43) and the sand-making feeding belt conveyor (26) respectively, two discharge ports of the 5-8 mm pre-sieve three-way chute (37) and the 8-10 mm pre-sieve three-way chute (36) correspond to the feed ports of the 5-10 mm belt conveyor (44) and the sand-making feeding belt conveyor (26) respectively, the discharge port of the 0-3 mm belt conveyor (39) corresponds to the feed port of the 0-3 mm first transfer belt conveyor (40), the discharge port of the 0-3 mm first transfer belt conveyor (40) corresponds to the feed port of the transfer belt conveyor lower three-way chute (41), and two discharge ports of the transfer belt conveyor lower three-way chute (41) correspond to the 0-3 mm second transfer belt conveyor (42) and 0-3 mm first feed bin (80) respectively; the sand making system comprises a feed hopper type lifter (95), a sand making vibrating screen (96), an undersize scraper machine (97), a finished sand belt conveyor (46), a sand making buffer bin (47), a pre-screen scraper machine (48), a finished sand hopper type lifter (49), an electrohydraulic gate (50), a vibrating distributor front chute (51), a finished sand hopper type lifter chute (52), a finished sand air locking valve (53), a feeding scraper conveyor (54), a vibrating distributor (55), a powder selecting machine (56), a finished sand chute (57), a feeding hopper type lifter (58), a sand making machine lower chute (59), an ash powder chute (60), a feeding hopper type lifter chute (61), a sand making machine (62) and an ash powder planet air locking valve (63), wherein the discharge port of the feed hopper type lifter (95) corresponds to the feed port of the sand making buffer bin (47), the discharge port of the sand making buffer bin (47) corresponds to the feed port of the electrohydraulic gate (50), the discharge port of the electrohydraulic gate (50) corresponds to the feed port of the feeding scraper conveyor (54), the discharge port of the scraper conveyor (54) corresponds to the feed port of the scraper conveyor (54), the utility model provides a finished product, including hopper type conveyer (52) and sieve hopper type conveyer (58), hopper type conveyer (58) the discharge gate of hopper type conveyer chute (61) corresponds the feed inlet of hopper type conveyer chute (61), the discharge gate of hopper type conveyer chute (61) corresponds the feed inlet of sand making machine (62), the discharge gate of sand making machine (62) corresponds the feed inlet of sand making machine lower chute (59), the discharge gate of sand making machine lower chute (59) corresponds the feed inlet of vibrating distributor (55), the discharge gate of vibrating distributor (55) corresponds the feed inlet of vibrating distributor front chute (51), the discharge gate of vibrating distributor front chute (51) corresponds the feed inlet of sand making vibrating screen (96), the discharge inlet of sand making vibrating screen (96) corresponds respectively according to the size of building stones under screen (97) and the feed inlet of sieve front scraper (48), the discharge gate of hopper type conveyer (58) corresponds to the feed inlet of hopper type conveyer (52), the discharge gate of finished product (49) corresponds to the feed inlet of hopper type conveyer (52) and sieve hopper type conveyer (52) corresponds to the feed inlet of finished product (49) and the discharge hopper type conveyer (48) and the discharge outlet of finished product The finished sand discharge port corresponds to the feed ports of the ash powder chute (60) and the finished sand chute (57), the discharge port of the ash powder chute (60) is connected with an ash powder planetary air locking valve (63) through a flange, the discharge port of the finished sand chute (57) corresponds to the feed port of the finished sand air locking valve (53), and the discharge port of the finished sand air locking valve (53) corresponds to the feed port of the finished sand belt conveyor (46); the dust removal system comprises a feeding crushing dust remover (64), a vibrating screen dust remover (65), a sand making system dust remover (66), a dust remover transfer scraper (67), a dust remover scraper (68), a first loading dust remover (69), a second loading dust remover (70), a dust remover on a storage bin (71), a loading dust remover scraper (72), a dust remover scraper (73) on the storage bin, an ash bucket elevator (74) and an ash powder transfer scraper (75), wherein the feeding crushing dust remover (64) is connected with a feed inlet of the dust remover scraper (68) through 4 ash discharge valves, the vibrating screen dust remover (65) is also connected with a feed inlet of the dust remover scraper (68) through 4 ash discharge valves, the dust making system dust remover (66) is connected with a feed inlet of the dust remover scraper (68) through 2 ash discharge valves, the discharge inlet of the dust remover scraper (68) is connected with a feed inlet of the dust remover scraper (67), the first loading dust remover scraper (69) is connected with a feed inlet of the dust remover (72) through the loading dust bucket elevator (72), the discharge port of the dust remover (71) on the storage bin is connected with the feed port of the scraper (73) of the dust remover on the storage bin through 2 dust discharging valves, the discharge port of the scraper (73) on the storage bin is also connected with the feed port of the bucket elevator (74) for ash powder, and the discharge port of the bucket elevator (74) for ash powder is connected with the feed port of the scraper (75) for ash powder transfer; the loading system comprises a 45-80 mm finished product bin (98), a 10-20 mm finished product bin (76), a 20-30 mm finished product bin (77), a 5-10 mm finished product bin (78), a 3-5 mm finished product bin (79), a 0-3 mm finished product first bin (80), a 0-3 mm finished product second bin (81), a finished product sand bin (82), a 0-3 mm under-bin belt conveyor (83), a 0-5 mm under-bin belt conveyor (84), a 5-30 mm under-bin belt conveyor (85), a 10-80 mm under-bin belt conveyor (86), a first loading belt conveyor (87), a first bulk machine (88), a first wagon balance (89), a second bulk machine (90), a second loading belt conveyor (91) and a second wagon balance (92), the discharge ports of the 45-80 mm finished product bin (98) and the 10-20 mm finished product bin (76) correspond to the feed port of the belt conveyor (86) under the 10-80 mm bin, the discharge ports of the 20-30 mm finished product bin (77) and the 5-10 mm finished product bin (78) correspond to the feed port of the belt conveyor (85) under the 5-30 mm bin, the discharge ports of the 3-5 mm finished product bin (79) and the 0-3 mm finished product first bin (80) correspond to the feed port of the belt conveyor (84) under the 0-5 mm bin, the discharge ports of the 0-3 mm finished product second bin (81) and the finished product sand bin (82) correspond to the feed port of the belt conveyor (83) under the 0-3 mm bin, the discharge ports of the 5-30 mm under-bin belt conveyor (85) and the 10-80 mm under-bin belt conveyor (86) correspond to the feed port of the first loading belt conveyor (87), the discharge port of the first loading belt conveyor (87) corresponds to the feed port of the first loose-packed machine (88), the first loose-packed machine (88) corresponds to the first wagon balance (89), the discharge ports of the 0-3 mm under-bin belt conveyor (83) and the 0-5 mm under-bin belt conveyor (84) correspond to the feed port of the second loading belt conveyor (91), the discharge port of the second loading belt conveyor (91) corresponds to the feed port of the second loose-packed machine (90), and the second loose-packed machine (90) corresponds to the second wagon balance (92); all the discharging ports of the finished product bins are connected with the feeding ports of the belt conveyors under the corresponding bins through gate funnels and feeders; the first bulk machine (88) and the second bulk machine (90) are mobile bulk material loading machines.

2. The stone crushing, screening, sand making and dust removing integrated production system according to claim 1, wherein: the discharge ports of the first returning material impact breaking down chute (16), the second returning material impact breaking down chute (17), the returning material chute (5) and the impact breaking down three-way chute (11) correspond to the feed port of the main conveyor belt (18); the discharge port of the ash planetary air locking valve (63) corresponds to the feed port of the 0-3 mm belt conveyor (39), the discharge port of the dust remover transfer scraper (67) corresponds to the feed port of the 0-3 mm belt conveyor (39), and the discharge port of the ash transfer scraper (75) corresponds to the feed port of the 0-3 mm first transfer belt conveyor (40); the discharge port of the 45-80 mm belt conveyor (22) corresponds to the feed port of the 45-80 mm finished product bin (98), the discharge port of the 20-30 mm belt conveyor (28) corresponds to the feed port of the 20-30 mm finished product bin (77), the discharge port of the 5-10 mm transfer belt conveyor (29) corresponds to the feed port of the 5-10 mm finished product bin (78), the discharge port of the 3-5 mm belt conveyor (43) corresponds to the feed port of the 3-5 mm finished product bin (79), the two discharge ports of the transfer belt conveyor lower three-way chute (41) correspond to the feed ports of the 0-3 mm finished product first bin (80) and the 0-3 mm second transfer belt conveyor (42) respectively, the discharge port of the 0-3 mm second transfer belt conveyor (42) corresponds to the feed port of the 0-3 mm finished product second bin (81), and the discharge port of the finished product sand conveyor (46) corresponds to the feed port of the finished product sand (82).