CN112439530A - Fine granite machine-made sandstone aggregate production line and process flow thereof - Google Patents
Fine granite machine-made sandstone aggregate production line and process flow thereof Download PDFInfo
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- CN112439530A CN112439530A CN202011184258.3A CN202011184258A CN112439530A CN 112439530 A CN112439530 A CN 112439530A CN 202011184258 A CN202011184258 A CN 202011184258A CN 112439530 A CN112439530 A CN 112439530A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
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- Combined Means For Separation Of Solids (AREA)
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Abstract
The invention belongs to the field of manufacturing of machine-made gravel equipment, and provides a production line for a fine granite machine-made gravel aggregate, which adopts a crushing and screening process of coarse crushing by a jaw crusher, desilting and screening, pre-screening, two-stage intermediate crushing by a cone crusher, shaping by a vertical shaft impact crusher and screening a coarse aggregate finished product at the front end; the rear end adopts a floor type sand making process. The production line comprehensively utilizes technical means such as computer network, wireless communication, space positioning, geographic information and the like, integrates monitoring and control information of equipment operation formed by all production lines into a set of intelligent monitoring and control system, realizes dynamic control of the sandstone aggregate production line, and realizes controllability and flexibility of the whole production flow. By adopting the invention, the high quality of the finished aggregate can be ensured; secondly, the production process can be realized, and the environment is protected; and thirdly, process control intellectualization can be realized, and controllability and flexibility of the whole production flow are ensured.
Description
Technical Field
The invention relates to a machine-made sand-stone aggregate production line, in particular to a fine granite machine-made sand-stone aggregate production line, and more particularly relates to an intelligent environment-friendly fine granite machine-made sand-stone aggregate production line.
Background
In the traditional machine-made sandstone aggregate production line in China, no matter dry-method sand making or wet-method sand making, a plurality of problems exist: some production lines are unreasonable in equipment configuration or process flow design according to different raw stone materials, so that the product quality is low, and the aggregate particle type is not smooth enough, and the needle and flake contents are more than 15%, so that the aggregate coagulation and the opposite sex are poor; secondly, the aggregate grading is unreasonable, the fineness modulus and the stone powder content do not reach the standard, and the water content is uncontrollable, so that the sand using requirement of commercial concrete and the higher standard sand using requirement of premixed mortar cannot be met; some production lines are environment-friendly and do not reach the standard, although the problem of high stone powder content of aggregates can be solved by using dry-method sand making, a large amount of dust generated in the production process has serious environmental pollution, the wet-method sand making has low yield of finished sand, a large-volume storage bin needs to be arranged for dehydration, the dehydration period is long, stone powder is large in loss, difficult to recover, the stone powder content of the finished sand is low, the grading is unreasonable, the production wastewater has large environmental pollution, the water treatment cost is high, and the resource recycling is difficult to realize; some production lines have rough and lagged production process, low automation degree and no intelligent treatment, thus leading to uncontrollable product yield, unbalanced production, high energy consumption and low efficiency.
Disclosure of Invention
The invention aims to overcome the defects of the traditional technology and provide an intelligent environment-friendly production line for machine-made sand aggregate of fine granite.
The technical scheme adopted for realizing the purpose of the invention is an intelligent environment-friendly type fine granite machine-made sandstone aggregate production line, which comprises a crude stone bin, a bar-type vibrating feeder, a jaw crusher, a one-way rubber belt conveyor, a circular vibration desilting screen, a 0-10mm mud pile, a transfer truck, a circular vibration pre-screening, a discharge hopper, a suspension type iron remover, a buffer bin, an electric vibrating feeder, a single-cylinder hydraulic cone crusher, a vertical shaft impact breaking and shaping machine, a multi-cylinder hydraulic cone crusher, a two-way rubber belt conveyor, a rubber belt scale, a three-shaft elliptical horizontal vibration coarse aggregate inspection finished product screen, a 4, 75-11mm finished product stone bin, an 11-26mm finished stone bin, a circular vibration grading screen, a vertical shaft impact breaking sand making machine, a three-shaft elliptical horizontal vibration fine aggregate inspection finished product screen, a 0-4.75mm finished sand bin, an air screening machine, The system comprises a mixing humidifier, a bag type dust collector, a 0-0.074 finished product stone powder bin, an automobile electronic scale, a comprehensive monitoring control device and a dust collecting air pipe, wherein the contents are as follows:
1. the production line serves a same-plate building project, and the grading amount and the total amount of the sand and stone materials required by the project are as follows:
according to the demand of the amount of engineering sand, the production line is characterized in that the total processing capacity is determined to be 12.4 ten thousand tons per month, and the production capacity of finished products is 320 tons per hour;
according to the requirement of the production capacity of finished materials, considering comprehensive factors such as processing loss, transportation loss, unbalance coefficient and the like in the whole processing process, the production allowance coefficient is 20%, and the production line is further characterized in that the rough material processing capacity is as follows: 320t/h (1+ 20%) -384 t/h, and the design processing capacity is 400 t/h;
the production line is further characterized in that the lithology of the processed raw stone is white granite, the average compressive strength of the white granite is 184-218MPa, the hardness is higher, the abrasiveness is stronger, and the crushing difficulty is higher; the ratio of the maximum particle size of the raw stone to the minimum particle size of the product is 750 mm;
the production line is further characterized in that the requirements of the served projects on the concrete are high, and the product not only needs to meet the sand requirement of commercial concrete, but also needs to meet the requirement of higher standard sand for ready-mixed mortar;
2. the production line is characterized in that the process flow is designed to be sand making by a dry method on the principle of reasonable, reliable, environment-friendly, intelligent and adjustable design and product quality guarantee according to the characteristics that the crushed rock is granite and the ratio of the maximum particle size of raw materials to the minimum particle size of a product is changed according to the total production amount, the production strength and the aggregate grade required in different periods of time; the rear end adopts a floor type sand making process;
3. the invention is further configured to: the production line complies with the excellent concept of 'multi-screen and less-broken' in the production process design of the sandstone aggregate, and is provided with four screening procedures of desilting screening, pre-screening, grading screening and coarse and fine aggregate inspection screening.
By adopting the technical scheme, although the production system is relatively complex due to the mud removing screening, pre-screening and grading screening, the cost of the screening equipment is lower than that of the crushing equipment, the cost of easily damaged parts is also lower, and the initial investment and the later operation of a project can be more economic;
4. the invention is further configured to: the coarse crushing feeding device of the production line adopts a bar-type vibrating feeder which adopts variable frequency control, and is an ideal device suitable for coarse crushing feeding of medium and small-yield production lines.
By adopting the technical scheme, when the bar-type vibrating feeder feeds uniformly, the gap of the grate bars is adjusted, the unearthing operation can be carried out, and the mud removing sieve is matched, so that the soil content in finished aggregate is effectively reduced, the methylene blue value is controlled, and the aggregate quality is improved;
5. the production line is provided with desilting screening before coarse crushing, the desilting screening is a necessary component of a dry-method fine aggregate production line, and the mined raw materials possibly contain more soil in the early stripping stage of an aggregate mine; some aggregate mines also have more soil in the mine rock stratum, and the soil needs to be removed and sieved when entering a production system. The materials which are screened out by the bar feeder and are smaller than the gaps between the bars enter the desilting screen, the size of the screen holes of the desilting screen is determined by the mud content and the particle size of mud blocks, the cleaner materials on the screen return to the production system, and the insolated materials are treated by waste disposal.
By adopting the technical scheme, the soil possibly carried in the mining raw materials can be removed, the quality of fine aggregate is ensured, and the normal operation and output efficiency of subsequent equipment such as a cone crusher and the like can be ensured;
6. the invention is further configured to: the production line adopts a jaw crusher as coarse crushing equipment according to the productivity characteristics.
By adopting the technical scheme, the jaw crusher has better adaptability to materials, and due to the extrusion crushing mode, the wearing parts have longer service life, and under the condition of the same treatment capacity and the similar feeding and discharging particle size grades, the loading power of the jaw crusher is lower, so that the jaw crusher is ideal coarse crushing equipment;
7. the invention is further configured to: the production line sets up screening in advance before well garrulous, smashes in the material when back section technology adopts earlier cone crusher, and when whole coarse aggregate finished products of back vertical shaft impact crusher plastic, it has the rationality to set up screening in advance before well garrulous.
By adopting the technical scheme, firstly, materials with the granularity smaller than that of the medium crushing discharged materials are screened out in advance through pre-screening, and do not enter the medium crushing equipment, so that excessive crushing is avoided; the material quantity and the feeding force of the crushing equipment are controlled through the size of a pre-screened screen, and the model selection specification of the crushing equipment can be reduced after optimized configuration;
8. the invention is further configured to: the middle crushing process flow of the production line adopts single-cylinder and multi-cylinder hydraulic cone crushers to crush two sections, and the closed cycle is adopted.
By adopting the technical scheme, the hardness of the white granite raw stone is higher, the abrasiveness is stronger, the cone crusher has good adaptability to high-hardness materials, the service life of a quick-wear part is longer, and the cone crusher is the most reasonable selection for two-section type medium crushing. The single-cylinder cone crusher adopts an independent single-acting cylinder, so that the performance of equipment is more stably exerted, and the design of an upper and lower double-point support rotary main shaft and an optimized crushing cavity type ensure that the operation is simple, the adjustment is flexible, the productivity and the efficiency are higher, and the single-cylinder cone crusher is especially good at front-section medium crushing; the multi-cylinder cone crusher adopts a fixed main shaft, a multi-cylinder support design and an optimized crushing cavity type, combines uniform feeding of a vibrating feeder, realizes full-bin feeding and laminated crushing, has higher crushing force and yield, ensures that 10-30mm material products have good particle shape, low needle flake content, high 10-25 mm occupation ratio and low 0-10mm occupation ratio, has a shaping function on the material output by the single-cylinder cone crusher, and is more suitable for crushing and middle-crushing and back-feeding in the rear section;
9. the invention is further configured to: the production line is provided with the grading screening after the intermediate crushing, and when the process adopts a vertical shaft crusher to shape all coarse aggregate finished products, the grading screening after the intermediate crushing has rationality.
By adopting the technical scheme, firstly, through classified screening, materials with the particle size smaller than that of the shaped discharged materials are screened out in advance and do not enter shaping equipment, so that excessive crushing is avoided; the two-way sieve is classified and sieved, unqualified coarse aggregate can be sieved, and the medium crushing effect is perfected by circularly beating the returned material until the coarse aggregate is qualified; the three-way sieve controls the material quantity and feeding force fed into the shaping equipment through the size of the graded sieve, and the model selection specification of the shaping equipment can be reduced after optimized configuration;
10. the invention is further configured to: the production line adopts a vertical shaft impact crusher to shape all coarse aggregates after intermediate crushing, the vertical shaft impact crusher has double functions of crushing and shaping, the feeding of the vertical shaft impact crusher is from pre-screening and grading screening, the materials are fed into a coarse aggregate finished product inspection screen after being crushed and shaped by the vertical shaft impact crusher, and the coarse aggregate finished product inspection screen and the vertical shaft impact crusher form a closed-loop system. When the vertical shaft impact crusher is used for shaping, the rotating speed of a rotor is usually between 900 and 1300r/min, the proportion of a coarse aggregate finished product is reduced due to the overhigh rotating speed, and the shaping effect cannot be ensured due to the overlow rotating speed; the overflow amount needs to be determined by balancing the passing capacity and the shaping effect of the vertical shaft crusher;
by adopting the technical scheme, the grain shape effect of the coarse aggregate can be ensured; secondly, the proportion of the finished coarse aggregate product can be adjusted;
11. the invention is further configured to: the production line is provided with coarse aggregate checking and screening after coarse aggregate shaping, and when the product contains part of 26-11mm medium stones and 11-4.75mm small stones and the back-end process adopts a sand making building to make sand, the coarse aggregate checking and screening after the coarse aggregate shaping is necessary.
By adopting the technical scheme, the first step of screening out medium and small stone products with the specification and size of 26-11mm and 11-4.75 mm; the coarse aggregate is checked and screened, so that the materials with the granularity smaller than the shaping discharge granularity are screened out in advance without entering shaping equipment, and excessive crushing is avoided; the tee joint is screened by checking and screening coarse aggregates, unqualified coarse aggregates can be screened out, and the shaping effect and quality are improved by circularly beating the return materials; the size of the screened screen is checked through coarse aggregate to control the material quantity and feeding force fed into the shaping equipment, and the model selection specification of the shaping equipment can be reduced after optimized configuration;
12. the invention is further configured to: and the coarse aggregate and fine aggregate finished product inspection and screening equipment of the production line selects a triaxial elliptical horizontal vibrating screen.
By adopting the technical scheme, the installation inclination angle of the three-axis elliptical horizontal vibrating screen is 0 degrees, so that the three-axis elliptical horizontal vibrating screen has a larger screening area, and a three-axis synchronous linkage excitation mode is adopted, so that the three-axis elliptical horizontal vibrating screen has larger amplitude and adjustable amplitude and frequency, can ensure higher screening efficiency, and is particularly suitable for inspection and screening of aggregate finished products;
13. the invention is further configured to: the production line is provided with a buffer bin in front of the jaw crusher, the cone crusher, the vertical shaft impact shaper and the sand making building vertical shaft impact sand making machine.
By adopting the technical scheme, the raw stone bin is provided with the bar feeder with the variable frequency and the variable speed, so that the loader or the dumper can conveniently unload materials, the jaw crusher can continuously and stably feed materials, the effective volume of the bin is not lower than the hopper volume of an unloading truck, the hopper volume of the unloading truck is 1-1.5 times that of the unloading truck, the hopper volume is not suitable to be overlarge, and otherwise the bar feeder cannot normally work due to overlarge load; the cone crusher and the vertical shaft impact crusher are provided with a buffer bin in front of the cone crusher and the vertical shaft impact crusher and are provided with a variable-frequency speed-regulating electric vibration feeder, so that continuous and stable feeding of two crushing devices can be ensured, the devices can exert ideal performance, the volume of the buffer bin is not required to be overlarge, and the buffer feeding time of about 10min can be ensured;
14. the invention is further configured to: the sand making facility of the production line adopts a whole set of closed independent floor type sand making system, the system is generally divided into four parts of sand making, screening, stone powder separation and dust removal, and the system comprises a raw material bin, a sand making machine, a material returning adhesive tape machine, a material loading adhesive tape machine, a screening machine, a transition bin, a powder selecting machine, a pulse bag-type dust remover, a commodity discharge port, a powder pipe, a powder unloading device, a bulk loader and the like. The method has the advantages that firstly, the powder is selected in a grading way, materials smaller than 2.36mm in a crushed product are screened out, meanwhile, the stone powder is selected and regulated, the productivity is improved by solving the problem of grading and screening of the partial materials, and the fineness modulus and the stone powder content of the product are controlled; and secondly, returning the materials which are regulated and controlled to be larger than 4.75mm and part of the materials with the thickness of 2.36-4.75mm to the vertical shaft impact crusher for secondary crushing, which is a core link of gradation adjustment.
Through adopting above-mentioned technical scheme, building formula system sand system possess following advantage: quality of fine sand; high efficiency, energy saving and large production capacity; the adaptability is strong, and the functions are various; the production process is green and environment-friendly; intelligent monitoring, automatic operation, it is reliable and stable.
(1) The quality of the competitive products is derived from: firstly, the finished product has round and smooth grain shape, the needle sheet content is less than or equal to 5 percent, the coagulation and the opposite sex are good, and the pumping is easy. The unique 'stone and iron mixed beating' structure and the waterfall flow feeding system of the sand making machine can realize effective control of product particle types by adjusting the waterfall flow, the impeller rotating speed and other modes according to the raw material characteristics of white granite, obtain finished sand with better particle size distribution and particle type, and have stronger adaptability; fineness modulus of the second highest standard: 1.7-3.0, the medium sand grading is close to the middle curve (1, 3, 6, 8, 9) of the medium sand 2 area, and the porosity is less than 40%; the excellent powder selecting equipment enables the stone powder control technology in the aggregate to realize stepless adjustment of 5-15% of the powder content of finished sand, and the powder content of the finished aggregate is controlled between 5-15%, so that the concrete is more compact; in addition, the moisture content of the machine-made sand is 3% -5% through the wet stirring machine, so that the machine-made sand is prevented from being separated in the processes of storage and transportation, and the water-cement ratio is convenient to control when concrete is mixed;
(2) the characteristics of high efficiency, energy conservation and large production capacity are derived from: the unit energy consumption is low, the comprehensive average energy consumption of finished sand is 3.93KW/t, which is far lower than the average level of the industry; the particle size of the fed material is 0-5 mm, the continuous gradation is realized, the feeding amount exceeds 350 t/hour, the yield of the finished sand reaches more than 350 t/hour, and the yield of products of the same type in the industry is the largest; the sand making building high-speed parallel sand making process has the advantages that the sand making capacity is improved by more than 40%, the gradation is adjusted under the condition of not sacrificing productivity, the industrial problem that the yield and the gradation are mutually restricted is solved, meanwhile, compared with other air separation systems in the industry, the stone powder control technology does not need forced air supplement, and the energy is saved by more than 20% on the same scale;
(3) its high adaptability and diverse functions derive from: the equipment adopts a frequency conversion technology earlier, so that the production process can be randomly adjusted according to the characteristics of the white granite raw material, and different requirements of dry-mixed mortar, commercial concrete, asphalt concrete, high-performance concrete and the like are met while the production purposes of high quality, low consumption and high efficiency are achieved;
(4) the production process is green and environment-friendly and is derived from the following sources: the method adopts a totally-enclosed, multi-point air volume and air pressure self-regulation negative pressure concentrated dust collection technology, parts such as a screening machine, a sand making machine, a conveyor, a powder concentrator and the like forcibly form a pressure difference by a bag type dust collection system power device, so that the pressure of a place to be subjected to dust collection is lower than atmospheric pressure, and dust-containing gas is removed by a bag type dust collector, the bag type dust collector has high dust collection efficiency, organized dust emission is less than 10mg/m3, and the regulation of a second-level region in GB16297-1996 comprehensive emission Standard of atmospheric pollutants can be met;
(5) the intellectualization and automation of the operation of the system are derived from: the technical means of computer network, wireless communication, space positioning, geographic information and the like are utilized to provide remote fault diagnosis and working state monitoring services for the floor-type sand making line, so that the sand making line can stably, reliably and automatically run under intelligent monitoring. The monitoring system has the following functions of monitoring equipment overload: monitoring the current of motors of large equipment such as a sand making machine, a powder selecting machine, a screening machine, a rubber belt hoister and the like in real time, drawing a current change curve, and judging abnormal working conditions of the equipment such as overload, material blockage and the like; and (3) yield statistics query: the real-time storage of the raw material quantity and the finished product yield is favorable for capacity analysis, the working time of the equipment is fully recorded, and the maintenance of the equipment is facilitated; and (3) video monitoring accurate reduction: the method comprises the following steps of monitoring and recording a multi-channel video, accurately restoring a production scene, monitoring production remotely, and realizing multi-point sharing of an operation interface; and (3) omnibearing log management: all operations of the software are recorded and stored, so that operation tracing can be performed in the future conveniently; performing cross-product cooperative control: the matching quotient is mixed and dry-mixed, so that the local/remote reliable switching is realized;
15. the invention is further configured to: aggregate finished products of all the particle grades of the production line are all stacked in a fixed-point mode by using a belt conveyor, and an aggregate storage yard is divided into 3 areas according to the particle grades: 26-11mm, 11-4.75mm and 4.75-0 mm; the aggregate storage yard is in a reinforced concrete gallery structure form, a vibrating feeder is arranged below the gallery, supplies are supplied to the loading bin through an adhesive tape machine, and a metal structure slow-falling device is arranged at the position where the stones with the thickness of 26-11mm and 11-4.75mm are thrown; finished coarse aggregate is loaded in a loading bin, so that the potential safety hazard that flying stones hurt people and damage loading equipment in production and operation are avoided, and the production and operation management cost of the system is reduced.
By adopting the technical scheme, aggregate at all levels is prevented from being mixed; secondly, safe delivery of 26-11mm and 11-4.75mm stone products is realized, potential safety hazards that flying stones hurt people and damage loading equipment in production operation are avoided, and production operation management cost of a system is reduced;
16. the invention is further configured to: the production line is arranged in a sand making building, and two sets of cloth bag concentrated dust removing devices are arranged at the front section and the middle section of the production line and are used for respectively collecting dust at other dust raising points on the production line. In addition, in the structural design of noise reduction of the production line, the hopper, the chute and the like are designed into a stone-beating-stone form so as to reduce metal knocking, abrasion and noise of the stone-beating-iron. The noise outside 40 meters of the factory boundary is below 65dB, and the requirements of the national standard GB12348-2008 environmental noise emission standard of the factory boundary of industrial enterprises are met.
By adopting the technical scheme, the green and environment-friendly production line is realized in all directions;
17. the invention is further configured to: the whole production line adopts crushing and screening equipment with operation and regulation means; the whole line is provided with a high-precision weighing and intelligent sealing-tape machine conveying system.
By adopting the technical scheme, the production line is convenient to realize online intelligent control, can obey the overall operation requirement of the production line, and randomly allocates the crushing ratio in real time; the production line aggregate capacity metering and the sales metering can be accurately controlled in real time according to the capacity requirement;
18. the invention is further configured to: the production line comprehensively utilizes technical means such as computer network, wireless communication, space positioning, geographic information and the like, and integrates monitoring and control information of operation of all equipment forming the production line into a set of intelligent monitoring and control system.
By adopting the technical scheme, the dynamic control on the sandstone aggregate production line can be realized, and the controllability and flexibility of the whole production flow are realized.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. can ensure the high quality of the finished aggregate: the particle has good shape, good appearance and good and reasonable second-level preparation, can meet the requirements of commercial concrete sand and higher-standard sand for ready-mixed mortar, and the ready-mixed mortar is necessary in the future and will gradually replace field stirring in the next few years
2. The production process is green and environment-friendly. The production line adopts a plurality of means such as totally closed, multipoint air volume, wind pressure self-adjusting negative pressure concentrated dust collection technology and the like to realize the removal of 99.9 percent of dust; the noise reduction requirement of national standard GB12348-2008 environmental noise emission standard of industrial enterprise factory boundary is met by designing a hopper, a chute and the like to make stones;
3. the process control is emphasized, the full automation of the production line operation is realized, the controllability and the flexibility of the whole production flow are realized, the production is balanced, the quality is stable, the energy consumption is reduced, and the efficiency is improved.
Drawings
FIG. 1 is a drawing of the present invention: a schematic diagram of a production line for fine granite machine-made sand aggregate;
the figure only shows the types and flows of the components of the production line accurately, which is used for explaining the flow principle of the production line, but does not indicate the equipment number of the production line aiming at the production capacity requirement, and the production capacity of the production line will not be explained;
in the figure, arrows on the side edges of the unidirectional belt conveyor (4) and the bidirectional belt conveyor (16) indicate the material conveying direction; the arrow on the dust collecting air pipe (31) indicates the direction of dust collected by the dust removing system from the dust lifting point flowing into the dust remover;
in the figure, 1, a raw stone bin, 2, a bar-type vibrating feeder, 3, a jaw crusher, 4, a one-way belt conveyor, 5, a circular vibration mud removal screen, 6, 0-10mm mud piles, 7, a transfer truck, 8, a circular vibration pre-screening, 9, a discharge hopper, 10, a suspension iron remover, 11, a buffer bin, 12, an electric vibrating feeder, 13, a single-cylinder hydraulic cone crusher, 14, a vertical shaft impact breaking and shaping machine, 15, a multi-cylinder hydraulic cone crusher, 16, a two-way belt conveyor, 17, a belt scale, 18, a three-shaft elliptical horizontal vibration coarse aggregate inspection finished product screen, 19, 4, 75-11mm finished product stone bin, 20, 11-26mm finished product stone bin, 21, a circular vibration grading screen, 22, a vertical shaft impact breaking sand making machine, 23, a three-shaft elliptical horizontal vibration fine aggregate inspection finished product screen, 24, 0-4.75mm finished product sand bin, 25, Air screening machine 26, mixing humidifier 27, bag type dust collector 28, finished product stone powder bin 0-0.074 29, automobile electronic scale 30, comprehensive monitoring control device 31 and dust collecting air pipe
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
In the figure 1, the discharge port of a raw stone bin (1) is connected with the feed end of a bar-type vibrating feeder (2). The material feeding and discharging chute of the bar type vibrating feeder (2) is directly connected with the material inlet of the jaw crusher (3), and the material feeding and discharging chute of the bar type vibrating feeder is connected with the material inlet end of the circular vibrating desilting screen (5) through the communication of the one-way belt conveyor (4). The material feeding and discharging chute of the circular vibration mud removing sieve (5) is connected with the material feeding end of the circular vibration pre-sieve (8) through the communication of the one-way rubber belt conveyor (4), the material feeding and discharging chute of the circular vibration mud removing sieve is connected with a mud pile (6) with the thickness of 0-10mm through the communication of the one-way rubber belt conveyor (4), and the mud with the thickness of 0-10mm is directly loaded and transported to a truck (7). The discharge port of the jaw crusher (3) is connected with the feed end of a circular vibration pre-sieve (8) through the communication of a one-way rubber belt conveyor (4), the first-layer sieve discharge hopper (9) of the circular vibration pre-sieve (8) is connected with a front-section middle-crushing buffer bin (11) through the communication of the one-way rubber belt conveyor (4), the second-layer sieve discharge hopper (9) is connected with a rear-section middle-crushing buffer bin (11) through the communication of the one-way rubber belt conveyor (4), the third-layer sieve upper-sieve discharge hopper (9) is connected with the feed end of the buffer bin (11) used before shaping through the communication of the one-way rubber belt conveyor (4), the third-layer sieve lower-discharge hopper is connected with the sand making building buffer bin (11) through the communication of the one-way rubber belt conveyor (4), in addition, a suspension type iron remover (10) is installed on each one-way rubber belt conveyor (4) which conveys materials outwards from the circular vibration pre-sieve (8), the bottoms of all the transfer buffer bins (11) of the production line are provided with a hoisting type electric vibration feeder (12). The discharge port of the electric vibration feeder (12) below the front middle crushing buffer bin (11) is connected with the feed end of the single-cylinder hydraulic cone crusher (13) through the communication of the one-way rubber belt conveyor (4), and the discharge end of the single-cylinder hydraulic cone crusher (13) is connected with the feed end of the circular vibration classifying screen (21) through the communication of the one-way rubber belt conveyor (4). The discharge port of the electric vibration feeder (12) below the rear section middle crushing buffer bin (11) is connected with the feed end of the multi-cylinder hydraulic cone crusher (15) through the communication of the one-way rubber belt conveyor (4), and the discharge end of the multi-cylinder hydraulic cone crusher (15) is connected with the feed end of the circular vibration classifying screen (21) through the communication of the one-way rubber belt conveyor (4). An oversize material discharge hopper (9) of the circular vibration classifying screen (21) is connected with a feed inlet of a rear-section middle crushing buffer bin (11) through the communication of a one-way rubber belt conveyor (4), and an oversize material discharge hopper (9) is connected with a shaping front buffer bin (11) through the communication of the one-way rubber belt conveyor (4). The discharge port of an electric vibrating feeder (12) below the pre-shaping buffer bin (11) is connected with the feed end of a vertical shaft impact breaking and shaping machine (14) through the communication of a one-way rubber belt conveyor (4), and the discharge end of the vertical shaft impact breaking and shaping machine (14) is connected with the feed end of a three-shaft oval horizontal vibration coarse aggregate inspection finished product sieve (18) through the communication of the one-way rubber belt conveyor (4). The first layer screening discharge hopper (9) of the triaxial elliptical horizontal vibration coarse aggregate inspection finished product screen (18) is connected with the feed end of a buffer bin (11) used before shaping through the communication of a one-way rubber belt conveyor (4), the second layer screening discharge hopper (9) is connected with the feed end of the buffer bin (11) used before shaping through a two-way rubber belt conveyor (16), the two ends of the three layer screening discharge hopper are respectively connected with the feed ends of a finished product stone bin (20) of 11-26mm and the buffer bin (11) used before shaping, the three layer screening upper screening discharge hopper (9) is connected with the feed ends of a finished product stone bin (19) of 4, 75-11mm and the buffer bin (11) used before shaping through the communication of the two-way rubber belt conveyor (16), in addition, two bidirectional rubber belt conveyors (16) are respectively provided with a rubber belt scale (17) in the directions of a finished product stone bin (19) with the thickness of 4, 75-11mm and a finished product stone bin (20) with the thickness of 11-26mm, and the lower discharge hopper of the three-layer screen is connected with the sand making building buffer bin (11) through the communication of the unidirectional rubber belt conveyor (4). The discharge ports of the finished product stone bin (19) with the thickness of 4, 75-11mm and the finished product stone bin (20) with the thickness of 11-26mm are opposite to the feed port of the container of the transfer truck (7), and the bottom of the transfer truck (7) is provided with an automobile electronic scale (29).
A multilayer floor type sand making system with a partially closed production line is arranged in a dotted line frame, and a discharge port of an electric vibration feeder (12) below a buffer bin (11) is connected with a feed end of a vertical shaft impact breaking sand making machine (22) through the communication of a one-way rubber belt conveyor (4). The discharge end of the vertical shaft impact sand breaking machine (22) is connected with the feed inlet of the air screening machine (25) through the communication of the one-way rubber belt conveyor (4). The bottom coarse sand outlet of the air screening machine (25) is connected with the feed end of the triaxial elliptical horizontal vibration fine aggregate inspection finished product sieve (23) through the communication of the one-way belt conveyor (4), the middle fine sand outlet is connected with the feed inlet of the mixing humidifier (26) through the communication of two different one-way belt conveyors (4), and the upper dust outlet is connected with the inlet of the sand building inner bag type dust remover (27). A layer of screen outlet hopper (9) of the triaxial elliptical horizontal vibration fine aggregate inspection finished product screen (23) is connected with the feed end of a buffer bin (11) of the sand making building through the communication of a one-way rubber belt conveyor (4); the upper and lower discharge hoppers (9) of the second-layer screen are connected with the feed inlet of the mixing humidifier (26) through the communication of the one-way belt conveyor (4). The discharge hole of the mixing humidifier (26) is connected with a finished product sand bin (24) with the thickness of 0-4.75mm through the communication of the one-way rubber belt conveyor (4), the discharge hole of the finished product sand bin (24) with the thickness of 0-4.75mm is opposite to the feed hole of a container of the transfer truck (7), and the bottom of the transfer truck (7) is provided with an automobile electronic scale (29). The discharge hole of the bag type dust collector (27) is connected with a 0-0.074 finished product stone powder bin (28) through the communication of a one-way rubber belt conveyor (4), the discharge hole of the 0-0.074 finished product stone powder bin (28) is opposite to the feed hole of a container of a transfer truck (7), and the bottom of the transfer truck (7) is provided with an automobile electronic scale (29). In addition, the one-way belt conveyors (4) for conveying finished products in the sand making building are all provided with belt scales (17).
The bag type dust collector (27) arranged at the front section of the production line is respectively connected with the bar type vibrating feeder (2), the jaw crusher (3), the circular vibration mud removing sieve (5), the circular vibration pre-sieve (8), the electric vibrating feeder (12), the vertical shaft impact breaking and shaping machine (14) and the dust sources of all the one-way rubber belt conveyors (4) at the front section of the stone crushing line through all the dust collecting pipes (31); the bag type dust collector (27) arranged at the middle section of the production line is respectively connected with the dust sources of the single-cylinder hydraulic cone crusher (13), the multi-cylinder hydraulic cone crusher (15), the two-way rubber belt conveyor (16), the three-shaft elliptical horizontal vibration coarse aggregate inspection finished product sieve (18), the circular vibration grading sieve (21) and the one-way rubber belt conveyors (4) at the rear section of the stone crushing line through the dust collecting pipes; in addition, the sand making building is of a closed structure outwards, dust does not overflow, and the sand making building collects and removes dust through a bag type dust collector (27) arranged in the sand making building.
The comprehensive monitoring control device (30) is interconnected with monitoring and control devices of all feeding, crushing, screening, dedusting, weighing and sand making building equipment.
By adopting the invention, the process flow of the production line of the intelligent environment-friendly fine granite machine-made sandstone aggregate is as follows:
engineering transport vechicle transportation is less than 750 mm's grit raw materials, pours it into former stone feed bin (1), starts the production line, realizes even feed by bar batcher (2), and the bar clearance is 200mm, is greater than 200mm part, gets into jaw crusher (3) and carries out coarse crushing, is less than 200mm part, leaks down from the grid clearance, sends into circular vibration by one-way rubber belt conveyor (4) and removes mud sieve (5), goes out native. The circular vibration mud removing sieve (5) has a 50mm screen on one layer and plays a role of buffering protection, the two layers of screens are 10mm and sieve dregs, the part of 0-10mm is used as the dregs and is sent into a mud pile (6) by the one-way rubber belt conveyor (4), a loading and transporting truck (7) is thrown away from the production line, and 10-200mm is sent into a circular vibration pre-sieve (8) by the one-way rubber belt conveyor (4) and returns to the production line again. The ore discharge port of the jaw crusher is 280mm, the crushed material and 10-200mm material returned from the circular vibration mud removal sieve (5) enter a circular vibration pre-sieve (8), the circular vibration pre-sieve (8) has a first layer of sieve screen 80mm, a second layer of sieve screen 40mm and a third layer of sieve screen 12mm, and more than 80mm of material is conveyed into a section of middle crushing buffer bin (11) by a one-way rubber belt conveyor (4), uniformly fed by an electric vibration feeder (12) hung at the bottom of the bin and conveyed into a single-cylinder hydraulic cone crusher (13) by the one-way rubber belt conveyor (4) for section middle crushing; 40-80mm of partial materials are conveyed into a two-section secondary crushing buffer bin (11) by a one-way rubber belt conveyor (4), uniformly fed by an electric vibration feeder (12) hung at the bottom of the bin, and conveyed into a multi-cylinder hydraulic cone crusher (15) by the one-way rubber belt conveyor (4) for secondary crushing; a part of materials of 12-40mm are conveyed into a shaping buffer bin (11) by a one-way rubber belt conveyor (4), uniformly fed by an electric vibration feeder (12) hung at the bottom of the bin, conveyed into a vertical shaft impact breaking and shaping machine (14) by the one-way rubber belt conveyor (4) to be broken and shaped, and a part of materials of 0-12mm are conveyed into the buffer bin (11) in a sand making building by the one-way rubber belt conveyor (4) to be made into sand, wherein a suspended iron remover (10) arranged on each one-way rubber belt conveyor (4) for conveying the materials outwards from a circular vibration pre-sieve (8) is responsible for removing hard iron devices in the materials. After the single-cylinder hydraulic cone crusher (13) and the multi-cylinder hydraulic cone crusher (15) are crushed, materials are sent into a circular vibration classifying screen (21) together by a one-way rubber belt conveyor (4), one layer of screen mesh of the circular vibration classifying screen (21) is 80mm, the buffering protection effect is achieved, the materials with the two layers of screen meshes being 40mm, and the materials with the size being more than 40mm return to a second-section middle crushing buffer bin (11) through a discharge hopper (9), enter the multi-cylinder hydraulic cone crusher (15) and are crushed again, and a closed cycle is formed; the 0-40mm part of materials and the 0-40mm part of materials from the circular vibration pre-sieve (8) are sent into a shaping buffer bin (11) by a one-way rubber belt conveyor (4), evenly fed by an electric vibration feeder (12) hung at the bottom of the bin, and sent into a vertical shaft impact breaking and shaping machine (14) by the one-way rubber belt conveyor (4) for crushing and shaping. The materials crushed by the vertical shaft impact crushing and shaping machine (14) enter a three-axis elliptical horizontal vibration coarse aggregate inspection finished product sieve (18), wherein a part of the materials with a first layer of screen mesh of 26mm, a second layer of screen mesh of 11mm and a third layer of screen mesh of 4.75mm, wherein the part of the materials with the size of more than 26mm is sent back to a shaping buffer bin (11) by a one-way rubber belt conveyor (4) and enters the vertical shaft impact crushing and shaping machine (14) for re-crushing to form closed cycle; the material of 11-26mm is conveyed into a finished product stone bin (20) of 11-26mm by a bidirectional belt conveyor (16) in a forward operation mode, a loading and transporting truck (7) delivers the material, the finished product delivery amount is measured by an automobile electronic scale (29), the production amount of the finished product stone of 11-26mm is controlled by a belt scale (17), and the redundant finished product stone of 11-26mm is returned to a shaping buffer bin (11) by the bidirectional belt conveyor (16) in a reverse operation mode to transfer the sand; the 4.75-11mm part of materials are conveyed into a 4, 75-11mm finished product stone bin (19) by a bidirectional belt conveyor (16) in a forward operation mode, a loading and transporting truck (7) delivers the materials, a truck electronic scale (29) measures the delivery amount of finished products, a belt scale (17) controls the production amount of the 4, 75-11mm finished product stones, and the redundant 4, 75-11mm finished product stones are returned to a shaping buffer bin (11) by the bidirectional belt conveyor (16) in a reverse operation mode to transfer sand making; and (3) feeding the part of the material with the diameter of 0-4.74mm and the part of the material with the diameter of 0-12mm from the circular vibration pre-screening (8) into a buffering bin (11) of a sand making building together by a one-way rubber belt conveyor (4) to make sand.
Materials in the buffering storage bin (11) of the sand making building are uniformly fed by an electric vibration feeder (12) hung at the bottom of the storage bin, the materials are conveyed into a vertical shaft impact breaking sand making machine (22) by a one-way rubber belt conveyor (4) to make sand, and the materials broken by the vertical shaft impact breaking sand making machine (22) are conveyed into an air screening machine (25) by the one-way rubber belt conveyor (4). Coarse materials screened by an air screening machine (25) are sent into a three-axis elliptical horizontal vibration fine aggregate inspection finished product screen (23) by a one-way belt conveyor (4), and the materials with a layer of screen mesh of 4.75mm and more than 4.75 are sent back to a sand making building buffer bin (11) by the one-way belt conveyor (4) and enter a vertical shaft impact crushing sand making machine (22) for re-crushing to form closed cycle; 2.36mm of the second-layer screen, 2.36-4.75mm of the materials sieved out from the upper and lower layers of the second-layer screen and 0-2.36mm of the materials are sent to a mixing humidifier (26) by a one-way rubber belt conveyor (4); 0-0.074 stone powder sieved by a cyclone of an air sieving machine (25) enters a bag type dust collector (27) through a closed pipeline, and the bag type dust collector (27) collects the stone powder into a 0-0.074 finished stone powder bin (28); stone powder of more than 0.074 sieved by a cyclone of an air sieving machine (25) and partial materials of 2.36-4.75mm and 0-2.36mm below a finished product sieve (23) for three-axis oval horizontal vibration fine aggregate inspection are fed into a mixing humidifier (26) together. The 'mixed stone and iron beating' structure of the sand making main machine of the sand making building and the waterfall flow feeding system can adjust the waterfall flow, the impeller rotating speed and other modes according to the production capacity adjustment requirement of the product to realize the effective control of the grain type, the grain size distribution and the fineness modulus of the product. The wet mixing machine of the sand making building can adjust the water content of machine-made sand by 3-5%, ensure that the machine-made sand is not separated in the process of storage and transportation, and is convenient for controlling the water-cement ratio when mixing concrete. The adhesive tape scale (17) on each one-way adhesive tape conveyor (4) for conveying finished products can accurately measure the production quantity of the finished products such as 0-0.074 stone powder, 0-4.75 machine-made sand and the like, and the automobile electronic scale (29) can accurately measure the delivery quantity of the finished products such as 0-0.074 stone powder, 0-4.75 machine-made sand.
Dust collection covers are arranged at all crusher, screening machine, feeder feeding (discharging) points and conveyor transfer points of the production line. The dust removal device is operated to form negative pressure at each dust raising point, dust-containing gas is sucked into the dust collection cover, is conveyed into the dust remover (27) through the dust collection air pipe (31), is purified by the dust remover (27) and then is discharged into the atmosphere, and the purpose of removing dust in the production line can be achieved; the production line hopper, the feed box, the material distribution disc, the chute and the like are designed and manufactured into a stone-beating form so as to reduce metal knocking, abrasion and noise of stone-beating iron.
The production line adopts crushing and screening equipment with operation and regulation means, the whole line is provided with a high-precision weighing and intelligent belt conveyor conveying system, and the comprehensive monitoring and control device (30) connects all the equipment of the production line into a whole monitoring and control network by utilizing the technologies of a computer network, a wireless communication technology, a space positioning technology, geographic information and the like, so that the dynamic management and control of the sandstone aggregate production line are realized, and the controllability and the flexibility of the whole production flow of the production line are realized.
Claims (9)
1. A production line for machine-made sand aggregate of fine granite is composed of original stone bin, bar-type vibration feeder, jaw crusher, unidirectional rubber belt conveyor, circular vibration mud-removing sieve, 0-10mm mud pile, transport truck, circular vibration pre-sieve, discharge hopper, suspended iron remover, buffer bin, electric vibration feeder, single-cylinder hydraulic cone crusher, vertical shaft breaking and shaping machine, multi-cylinder hydraulic cone crusher, bidirectional rubber belt conveyor, rubber belt scale, three-axis elliptical horizontal vibration coarse aggregate inspection finished product sieve, 4, 75-11mm finished product stone bin, 11-26mm finished product stone bin, circular vibration grading sieve, vertical shaft impact breaking and sand making machine, three-axis elliptical horizontal vibration fine aggregate inspection finished product sieve, 0-4.75mm finished product sand bin, air screening machine, humidifier, bag-type dust remover, 0-0.074 mm finished product stone powder bin, automobile electronic balance, sand-making machine, and machine, A comprehensive monitoring control device and a dust collecting air pipe.
2. The production line of fine granite machine-made sandstone aggregate of claim 1, which is characterized in that: the discharge port of the raw stone bin is connected with the feed end of the bar-type vibrating feeder. The material feeding and discharging chute of the bar-type vibrating feeder is directly connected with the material inlet of the jaw crusher, and the material feeding and discharging chute of the bar-type vibrating feeder is connected with the material inlet end of the circular vibrating desilting screen through the communication of the one-way belt conveyor. The material feeding and discharging chute of the circular vibration mud removing sieve is connected with the material feeding end of the circular vibration pre-sieve through the communication of a one-way rubber belt conveyor, the material feeding and discharging chute of the circular vibration mud removing sieve is connected with a mud material pile of 0-10mm through the communication of the one-way rubber belt conveyor, and the mud material pile of 0-10mm is directly loaded and transported to a truck.
3. The production line of fine granite machine-made sandstone aggregate of claim 1, which is characterized in that: the discharge port of the jaw crusher is connected with the feed end of the circular vibration pre-sieve through the communication of the one-way rubber belt conveyor, the one-layer sieve discharge hopper of the circular vibration pre-sieve is connected with the front section middle crushing buffer bin through the communication of the one-way rubber belt conveyor, the two-layer sieve discharge hopper is connected with the rear section middle crushing buffer bin through the communication of the one-way belt conveyor, the three-layer sieve upper sieve discharge hopper is connected with the feed end of the buffer bin before shaping through the communication of the one-way rubber belt conveyor, the three-layer sieve lower sieve discharge hopper is connected with the sand making building buffer bin through the communication of the one-way rubber belt conveyor, in addition, a suspension type iron remover is installed on each one-way rubber belt conveyor for conveying materials outwards from the circular vibration pre-sieve, and a suspension type electric vibration feeder is installed at the bottoms of all the buffer bins of the production.
4. The production line of fine granite machine-made sandstone aggregate of claim 1, which is characterized in that: the discharge gate of the electric vibration feeder under the front-section middle-crushing buffer bin is connected with the feed end of the single-cylinder hydraulic cone crusher through the communication of the one-way rubber belt conveyor, and the discharge end of the single-cylinder hydraulic cone crusher is connected with the feed end of the circular vibration classifying screen through the communication of the one-way rubber belt conveyor. The discharge port of the electric vibration feeder under the rear section middle crushing buffer bin is connected with the feed end of the multi-cylinder hydraulic cone crusher through the communication of the one-way rubber belt conveyor, and the discharge end of the multi-cylinder hydraulic cone crusher is connected with the feed end of the circular vibration classifying screen through the communication of the one-way rubber belt conveyor.
5. The production line of fine granite machine-made sandstone aggregate of claim 1, which is characterized in that: the material feeding and discharging hopper of the circular vibration classifying screen is connected with the feeding port of the rear-section middle-crushing buffering bin through the communication of the one-way rubber belt conveyor, and the material discharging hopper of the circular vibration classifying screen is connected with the buffering bin before shaping through the communication of the one-way rubber belt conveyor. The discharge port of the electric vibration feeder below the buffer bin before shaping is connected with the feed end of the vertical shaft impact breaking and shaping machine through the communication of the one-way rubber belt conveyor, and the discharge end of the vertical shaft impact breaking and shaping machine is connected with the feed end of the three-shaft elliptical horizontal vibration coarse aggregate inspection finished product sieve through the communication of the one-way rubber belt conveyor.
6. The production line of fine granite machine-made sandstone aggregate of claim 1, which is characterized in that: the material outlet hopper of the first layer of the triaxial elliptical horizontal vibration coarse aggregate inspection finished product sieve is connected with the feeding end of a buffer bin used before shaping through the communication of a one-way rubber belt conveyor, the material outlet hopper of the second layer of the sieve is connected with the feeding ends of a finished product stone bin of 11-26mm and the buffer bin used before shaping through the communication of a two-way rubber belt conveyor, the material outlet hopper of the upper layer of the sieve of the third layer is connected with the feeding ends of a finished product stone bin of 4, 75-11mm and the buffer bin used before shaping through the communication of the two-way rubber belt conveyor, in addition, rubber belt scales are respectively arranged in the directions of the finished product stone bin of 4, 75-11mm and the finished product stone bin of 11-26mm on the two-way rubber belt conveyor, and the material outlet hopper of the lower layer of the sieve of the third layer is connected. The finished product stone bin with the thickness of 4, 75-11mm, the discharge port of the finished product stone bin with the thickness of 11-26mm are opposite to the feeding port of the container of the transfer truck, and the bottom of the transfer truck is provided with an automobile electronic scale.
7. The production line of fine granite machine-made sandstone aggregate of claim 1, which is characterized in that: the inside of the dotted line frame is a multilayer building type sand making system with a locally closed production line, and a discharge port of an electric vibration feeder below a buffer bin is connected with a feed end of a vertical shaft impact breaking sand making machine through the communication of a one-way rubber belt conveyor. The discharge end of the vertical shaft impact sand breaking machine is connected with the feed inlet of the air screening machine through the communication of the one-way rubber belt conveyor. The bottom coarse sand outlet of the air screening machine is connected with the feed end of the triaxial elliptical horizontal vibration fine aggregate inspection finished product sieve through the communication of the one-way belt conveyors, the middle fine sand outlet is connected with the feed inlet of the mixing humidifier through the communication of two different one-way belt conveyors in sequence, and the upper dust outlet is connected with the inlet of the bag-type dust collector in the sand making building. A layer of screen outlet hopper of the triaxial elliptical horizontal vibration fine aggregate inspection finished screen is connected with the feed end of a buffer bin of a sand making building through the communication of a one-way rubber belt conveyor; the upper and lower discharge hoppers of the two-layer screen are connected with the feed inlet of the mixing humidifier through the communication of the one-way rubber belt conveyor. The discharge port of the mixing humidifier is connected with a 0-4.75mm finished product sand bin through the communication of the one-way rubber belt conveyor, the discharge port of the 0-4.75mm finished product sand bin is opposite to the feed port of the container of the transfer truck, and the bottom of the transfer truck is provided with an automobile electronic scale. The discharge port of the bag type dust collector is communicated with a 0-0.074 finished stone powder bin through a one-way belt conveyor, the discharge port of the 0-0.074 finished stone powder bin is opposite to the feed port of a container of the transfer truck, and the bottom of the transfer truck is provided with an automobile electronic scale. In addition, the one-way belt conveyors for conveying finished products in the sand making building are all provided with belt scales.
8. The production line of fine granite machine-made sandstone aggregate of claim 1, which is characterized in that: the bag type dust collector arranged at the front section of the production line is respectively connected with a bar type vibrating feeder, a jaw crusher, a circular vibration mud removing sieve, a circular vibration pre-sieve, an electric vibrating feeder, a vertical shaft impact breaking and shaping machine and dust sources of all one-way rubber belt conveyors at the front section of the stone crushing line through all dust collecting pipes; the bag type dust collector arranged at the middle section of the production line is respectively connected with a single-cylinder hydraulic cone crusher, a multi-cylinder hydraulic cone crusher, a two-way rubber belt conveyor, a three-shaft elliptical horizontal vibration coarse aggregate inspection finished product sieve, a circular vibration grading sieve and dust sources of all the one-way rubber belt conveyors at the rear section of the gravel crushing line through all dust collecting pipes; in addition, the sand making building is of a closed structure outwards, dust does not overflow, and the sand making building collects and removes dust through a bag type dust collector arranged in the sand making building.
9. The production line of fine granite machine-made sandstone aggregate of claim 1, which is characterized in that: the comprehensive monitoring control device is interconnected with the monitoring and controlling devices of the feeding, crushing, screening, dedusting, weighing and sand making building equipment.
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