CN116550452A - Limestone processing building aggregate production line and method - Google Patents

Abstract

The invention discloses a limestone processing building aggregate production line which comprises a coarse crushing workshop, a desilting screen workshop, a semi-finished product material area, a middle fine crushing shaping workshop, a screening workshop and a finished product loading area which are sequentially arranged, wherein the coarse crushing workshop is provided with a raw material bin, a heavy bar feeder and a jaw crusher, the desilting screen workshop is provided with a desilting screen, a discarding area is arranged outside the desilting screen workshop, the middle fine crushing shaping workshop comprises a middle fine crushing processing area and a shaping area, the screening workshop comprises a screening area and a two screening area, the workshops are mutually connected through a tape machine, and meanwhile, a production method of limestone processing building aggregate based on the production line is also disclosed. The invention effectively reduces the production cost by optimizing the process design, has flexible process and high production efficiency, and meets the requirement of large-flow production.

Description

Limestone processing building aggregate production line and method

technical field

The invention relates to the technical field of building material production lines, in particular to a limestone processing building aggregate production line and method.

Background technique

With the development of infrastructure construction, the demand for building aggregates is increasing. As a natural resource, natural river sand is facing the problems of insufficient resources and high prices. Machine-made sand is popular in China due to its good quality and large-scale production. It is widely used in construction aggregate. Manufactured sandstone is made of raw materials such as natural stone excavated from mines, and is made by dry sand making, wet sand making or dry-wet mixing processes. However, due to factors such as design and application, there are still some problems that have not been well resolved in the existing process, such as The invention patent of CN202011184258.3 discloses a high-quality granite machine-made sandstone aggregate production line and its process flow. It adopts a set of intelligent monitoring and control systems to realize dynamic control of the sandstone aggregate production line. The process is controllable and High flexibility, but the production line design is suitable for granite machine-made sand, the production cost is high and it is only suitable for medium and small flow production, and needs to be improved in terms of product applicability and scale benefits. The invention patent of CN202210990328.7 discloses a method for preparing machine-made sand with high yield of rock waste, using rock waste as the main raw material, and proposes "adjustable soil removal process-multi-stage segmental crushing and screening-full product shaping and re-screening The dry-wet combined process of “separate-wet wheel bucket sand washing and fine sand recovery” optimizes the quality of the finished machine-made sand and improves the production efficiency of the process. However, the process is long, costly, and the production flexibility is not high, so it is difficult to achieve large-volume production.

Contents of the invention

In order to solve the deficiencies of the prior art, the present invention provides a limestone processing building aggregate production line, which can effectively reduce the production cost by optimizing the process design, and has flexible process and high production efficiency to meet the production demand of large flow.

In order to realize the foregoing invention object, the present invention provides following technical scheme:

A limestone processing building aggregate production line, including a coarse crushing workshop, a desilting and screening workshop, a semi-finished material area, a medium and fine crushing shaping workshop, a screening workshop, and a finished product loading area arranged in sequence, and the coarse crushing workshop is provided with a raw material warehouse , heavy-duty rod feeder, jaw crusher, the desilting sieve workshop is equipped with a desilting screen, and a waste area is set outside the desilting sieving workshop, and the medium and fine crushing shaping workshop includes a medium and fine crushing processing area and a shaping area , The screening workshop includes a screening area and a second screening area, each workshop is connected by a tape machine.

Preferably, there are two raw material bins, heavy-duty rod feeders, and jaw crushers in the coarse crushing workshop, and the coarse crushing workshop is connected with the desilting screen workshop through the first belt conveyor, and the coarse crushing workshop The second belt conveyor is connected to the semi-finished material area.

Preferably, the desilting and screening workshop is connected to the semi-finished material area through the second belt conveyor, while the desilting and screening workshop is connected to the discarding area through the third belt conveyor.

Preferably, a fourth belt conveyor connected to the second belt conveyor is arranged above the semi-finished material area, a discharge trolley is arranged on the fourth belt conveyor, a corridor is arranged at the bottom of the semi-finished material area, and a plurality of first vibrating feeders are evenly arranged in the corridor. The fifth belt conveyor is set under the first vibrating feeder, and the semi-finished material area is connected with the medium and fine crushing and shaping workshop through the fifth belt conveyor.

Preferably, the medium and fine crushing processing area includes a medium crushing processing area and a fine crushing processing area, the medium crushing processing area includes a medium crushing buffer bin and a medium crushing cone crusher, and the fine crushing processing area includes a fine crushing buffer bin and a fine crushing cone crusher, the There are two medium crushing cone crushers and they share a medium crushing buffer bin. The fine crushing cone crushers have two and share a fine crushing buffer bin. The first pre-screening machine in the screening area is connected, and the outlets of the two finely crushed cone crushers are connected with the second pre-screening machine and the third pre-screening machine in the first screening area through the tenth belt conveyor.

Preferably, the shaping area includes a shaping sand-making buffer bin and a vertical shaft impact crusher. There are three vertical shaft impact crushers and they share one shaping sand-making buffer bin. The sub-chute for shaping materials, the shaping sand-making buffer bin is connected to the feed port of the vertical shaft impact crusher through the twelfth belt conveyor, the split chute of the shaping sand-making buffer bin and the discharge port of the vertical shaft impact crusher All are connected to at least one of the thirteenth tape machine, the fourteenth tape machine, and the fifteenth tape machine, and the thirteenth tape machine, the fourteenth tape machine, and the fifteenth tape machine are connected to the second screening area.

Preferably, the first screening area includes a first pre-screening machine, a second pre-screening machine, and a third pre-screening machine arranged in parallel, and each pre-screening machine includes three layers of screens arranged up and down and is arranged at the bottom. The power powder selection device, the sieved material of the upper screen of the three pre-screening machines, and the sieved material of the middle screen are connected to the seventh belt machine through the discharge channel, the seventh belt machine is connected to the ninth belt machine and the ninth belt machine The machine is connected with the crushing buffer bin, and the material on the lower screen of the three pre-screening machines is connected with the eighth belt machine through the discharge channel, the eighth belt machine is connected with the eleventh belt machine, and the eleventh belt machine is connected with the shaping machine. The sand-making buffer warehouse is connected, the unpowered powder selection device under the pre-screening machine is connected with the twenty-first belt conveyor and the twenty-first belt conveyor is connected with the finished product warehouse six.

Preferably, the two screening areas are provided with two sets of screening machines, a total of six screening machines, the upper group of screening machines and the lower group of screening machines all include three screening machines arranged in parallel, and each screening machine includes an upper and lower screening machine. There are three layers of sieves and a non-powered powder selection device is installed at the bottom. The upper set of sieving machines and the lower set of sieving machines set screens with different apertures to achieve material sieving. The upper set of sieving machines screens the upper layer The material is connected to the 16th belt conveyor through the discharge channel, and the material on the middle screen is connected to the 17th belt conveyor through the discharge channel. Two connections, the upper sieve material of the upper group of sieving machines is connected to the upper sieve of the lower group of sieving machines through the chute, and the lower sieve material of the upper group of sieving machines passes through the 22nd belt conveyor and the unpowered powder selection device The upper sieve of the lower group of screening machines is connected to the eighteenth belt conveyor through the discharge channel, the middle sieve is connected to the nineteenth belt conveyor through the discharge channel, and the lower sieve is connected to the 19th belt conveyor through the discharge channel. The 20th tape machine is connected, the 18th tape machine, the 19th tape machine, and the 20th tape machine are respectively connected with the finished product warehouse 3, the finished product warehouse 4, and the finished product warehouse 5. The material channel is connected with the unpowered powder selection device, the unpowered powder selection device at the bottom of the second screening area is connected with the twenty-first belt conveyor and the twenty-first belt conveyor is connected with the finished product warehouse six.

Preferably, the production line is provided with a ventilation and dust removal system, and the ventilation and dust removal system includes a dust collector and a powder bin, and the dust collector includes a dust collector in a coarse crushing workshop, a dust collector in a desilting and screening workshop, and a dust collector in a medium and fine crushing processing area. , Dust collector in the shaping area, dust collector in the first screening area, dust collector in the second screening area, dust collector in the finished product loading warehouse, each dust collector is provided with an air source by the air pressure system and the dust is collected to the powder warehouse through the conveying system.

The present invention also provides a production method of limestone processing building aggregate, comprising the following steps:

S1 Coarse crushing and desliming steps: transport the raw materials to the raw material warehouse of the coarse crushing workshop, and then crush them by the jaw crusher after being fed by the heavy-duty bar feeder, and then transport the materials to the desliming and screening workshop through the first belt conveyor For desilting, the undersized material of the desilting screen is transported to the discarding area by the third belt conveyor, and the sieved material of the desilting sieve is transported by the second belt conveyor to the fourth belt conveyor above the semi-finished product material area, and is conveyed by the fourth belt conveyor The machine unloads the material to the fifth belt conveyor below the semi-finished material area, and the material is evenly arranged on the fifth belt conveyor through the vibrating feeder, and then transported by the fifth belt conveyor to the medium crushing buffer bin of the medium and fine crushing workshop;

S2 Intermediate crushing and pre-screening steps: The intermediate crushing buffer bin puts the material into the intermediate crushing cone crusher, after being crushed, it is transported to the first pre-screening machine by the sixth belt conveyor, and the crushed material of the fine crushing cone crusher is conveyed by the tenth belt conveyor To the second pre-screening machine and the third pre-screening machine in the first screening area, the screened material of the upper screen of each pre-screening machine and the screened material of the middle screen are all transferred to the ninth belt conveyor through the seventh belt conveyor. The fine crushing buffer warehouse is closed-circuit cycle, and the sieve material of the lower screen is transported to the sand making buffer warehouse through the eighth belt conveyor to the eleventh belt conveyor, and the underscreen material of the lower screen is selected by the non-powered powder selection device and then passed through the first Twenty-one belt conveyors are transported to the finished product warehouse six;

S3 Shaping step: The material entering the shaping sand making buffer bin is selected to be shaped or not shaped, and the material to be shaped is transported to the feed port of the three vertical shaft impact crushers by the unloading device, and enters the thirteenth vertical shaft impact crusher after being impacted and crushed by the vertical shaft. Tape machine, the fourteenth tape machine, the fifteenth tape machine, the materials without plastic treatment are sent directly to the thirteenth tape machine, the fourteenth tape machine, and the fifteenth tape machine through the sub-chute of the plastic sand making buffer bin, The materials of the thirteenth belt conveyor, the fourteenth belt conveyor, and the fifteenth belt conveyor are transported to the second screening area for processing;

S4 Screening step: six screening machines in the second screening area and two sets of screening machines screen the materials according to different particle sizes, and the upper and middle screens of the upper group of screening machines pass through the sixteenth belt conveyor, The seventeenth belt conveyor is transported to finished product warehouse 1 and finished product warehouse 2. The material on the lower screen of the upper group of screening machines enters the lower group of screening machines through the chute, and the material of the lower screen of the upper group of screening machines passes through the twenty-second belt After the machine enters the unpowered powder selection device, the powder is transported to the finished product warehouse 6 through the 21st belt conveyor, and the upper sieve, the middle sieve, and the lower sieve of the lower group of screening machines pass through the 18th belt conveyor respectively. The 19th and 20th belt conveyors are transported to the finished product warehouse 3, finished product warehouse 4 and finished product warehouse 5, and the lower sieve material of the lower group of screening machines enters the unpowered powder selection device and passes through the 21st The tape machine transports to the finished product warehouse six;

S5 Finished product loading step: For the materials transported to finished product warehouses 1 to 6, they are loaded and sent out by automatic conveying device.

The production method of limestone processing building aggregates also performs ventilation and dust removal operations in each step, provides air source for the dust collector through the air pressure system, and transports the dust from the workshop to the powder bin for recycling through the conveying system.

Beneficial effects of the present invention:

1. It adopts three-stage one closed circuit + shaping sand making process, which is applicable to a wide range of areas, realizes large-scale production, has a large circulation transportation flow, improves work efficiency, and has a small number of equipment, simple system layout, and low infrastructure costs.

2. The two-line mode is realized, the system reliability is high, in the face of emergencies, single-line production can still be maintained, and the off-season demand can be better adapted, and the product specification can be flexibly adjusted, and the output can be automatically adjusted to obtain high-quality products.

3. Adopt advanced control system, high degree of automation, stable process, high production precision, low failure rate and low energy consumption.

Description of drawings

Fig. 1 is the top view of limestone processing building aggregate production line of the present invention;

Fig. 2 is the plan view that each workshop of the present invention is connected by adhesive tape machine;

Fig. 3 is the right side view of the semi-finished material area of the present invention, coarse crushing workshop and desilting screen workshop connection;

Fig. 4 is the right side view that coarse crushing workshop of the present invention is connected with desilting screen workshop;

Fig. 5 is the front view of the connection between the semi-finished material area and the medium and fine crushing shaping workshop of the present invention;

Fig. 6 is the front view of the medium and finely crushed shaping workshop of the present invention;

Fig. 7 is the right side view of the connection between the medium and fine crushing processing area of the present invention and a screening area of the screening workshop;

Fig. 8 is the right side view of a screening section of the screening workshop of the present invention;

Fig. 9 is a right view of the connection between the shaping area of the present invention and the second screening area of the screening workshop;

Fig. 10 is the right view of the second screening section of the screening workshop of the present invention;

Fig. 11 is a front view of the screening workshop and finished product loading area of the present invention.

In the figure: 1-desilting and screen workshop, 2-coarse crushing workshop, 3-semi-finished material area, 4-medium and fine crushing and shaping workshop, 5-medium and fine crushing processing area, 6-shaping area, 7-screening workshop, 8-one Screening area, 9-second screening area, 10-finished product loading area, 11-raw material warehouse, 12-heavy bar feeder, 13-jaw crusher, 14-desilting screen, 15-discarding area, 16 -The first tape machine, 17-the second tape machine, 18-the third tape machine, 19-the fourth tape machine, 20-unloading trolley, 21-the first vibrating feeder, 22-the fifth tape machine, 23 -Medium crushing cone crusher, 24-Fine crushing buffer bin, 25-Fine crushing cone crusher, 26-Sixth belt conveyor, 27-Tenth belt conveyor, 28-First pre-screening machine, 29-Second pre-screening machine, 30-The third pre-screening machine, 31-No power powder separator, 32-The seventh belt machine, 33-The ninth belt machine, 34-The eighth belt machine, 35-The eleventh belt machine, 36-Sand making Buffer warehouse, 37-vertical shaft impact crusher, 38-twelfth belt machine, 39-thirteenth belt machine, 40-fourteenth belt machine, 41-fifteenth belt machine, 42-upper set of screening machines , 43-the lower group of screening machines, 44-the sixteenth tape machine, 45-the seventeenth tape machine, 46-the twenty-second tape machine, 47-the eighteenth tape machine, 48-the nineteenth tape machine, 49-20th tape machine, 50-21st tape machine, 51-finished product warehouse 1, 52-finished product warehouse 2, 53-finished product warehouse 3, 54-finished product warehouse 4, 55-finished product warehouse 5, 56-finished product Library six, 57-powder silo, 58-air compressor system.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 and 2, a limestone processing building aggregate production line includes a coarse crushing workshop 2, a desilting and screening workshop 1, a semi-finished material area 3, a medium and fine crushing workshop 4, a screening workshop 7 and a finished product. In the loading area 10, the coarse crushing workshop 2 is provided with a raw material bin 11, a heavy-duty bar feeder 12, and a jaw crusher 13, and the desilting screen workshop 1 is provided with a desilting screen 14. In this embodiment, There are two raw material bins 11, heavy-duty bar feeder 12, and jaw crusher 13 in the coarse crushing workshop 2. The bar spacing of the bar feeder is 80mm, and the desilting screen 14 adopts two upper and lower screens. , the specifications of the upper and lower desilting screens 14 are respectively 50*50mm and 20*20mm, and the waste area 15 is set outside the desilting sieve workshop 1, and the medium and fine crushing shaping workshop 4 includes the medium and fine crushing processing area 5 and shaping Area 6, screening workshop 7 includes a screening area 8 and a second screening area 9, each workshop is connected to each other through a conveying device, and the feeding end of each workshop is equipped with a hoisting iron remover.

As shown in Figures 3, 4, and 5, the conveying device between each workshop is a belt conveyor, and the rough crushing workshop 2 is connected with the desilting and screening workshop 1 through the first belt conveyor 16 and is connected with the semi-finished material through the second belt conveyor 17. The area 3 is connected, the desilting and screening workshop 1 is connected with the semi-finished material area 3 through the second belt conveyor 17, and connected with the discarded material area 15 through the third belt machine 18, and the semi-finished material area 3 is arranged above the second belt conveyor. The fourth adhesive tape conveyor 19 connected by the adhesive tape conveyor 17, the fourth adhesive tape conveyor 19 is equipped with a discharge trolley 20, a gallery is set at the bottom of the semi-finished material area 3, and a plurality of first vibrating feeders 21 are evenly arranged in the corridor, and the first vibrating feeder A fifth belt conveyor 22 is arranged below the feeder 21 , and the semi-finished material area 3 is connected with the medium and fine crushing and shaping workshop 4 through the fifth belt conveyor 22 .

As shown in Figures 1, 2, 5, and 6, the medium and fine crushing processing area 5 includes a medium crushing processing area and a fine crushing processing area. The medium crushing processing area includes a medium crushing buffer bin and a medium crushing cone crusher 23. The fine crushing processing area includes There are two crushing buffer bins 24 and a finely crushing cone crusher 25. The intermediate crushing cone crushers 23 have two and share one intermediate crushing buffer bin. The finely crushing cone crushers 25 have two and share a finely crushing buffer bin 24. The outlet of the medium crushing cone crusher 23 is connected with the first pre-screening machine 28 of a screening area 8 through the sixth belt conveyor 26, and the outlets of the two finely crushing cone crushers 25 are connected by the tenth belt conveyor 27 and a The second pre-screening machine 29 and the third pre-screening machine 30 of the screening area 8 are connected.

The shaping area 6 includes a shaping sand-making buffer bin 36 and a vertical shaft impact crusher 37. There are three vertical shaft impact crushers 37 sharing one shaping sand-making buffer bin 36. The shaping sand-making buffer bin 36 is set for In the sub-chute for shunting unshaped materials, the shaping sand-making buffer bin 36 is connected to the feed port of the vertical shaft impact crusher 37 through the twelfth belt conveyor 38, and the sub-chute and the vertical shaft type of the shaping sand-making buffer bin 36 The discharge ports of the impact crusher 37 are all connected to at least one of the thirteenth tape machine 39, the fourteenth tape machine 40, and the fifteenth tape machine 41, and the thirteenth tape machine 39, the fourteenth tape machine 40. The fifteenth belt conveyor 41 is connected to the second screening area 9.

As shown in Figures 7, 8, and 11, the first screening area includes a first pre-screening machine, a second pre-screening machine, and a third pre-screening machine arranged in parallel, and the three pre-screening machines all include three layers of screens arranged up and down. and a non-powered powder selection device 31 is arranged at the bottom. The specifications of the three-layer screens of each pre-screening machine are 50*50mm, 31.5*31.5mm*, and 3*3mm respectively. The screens on the upper screens of the three pre-screening machines are Material (>50mm), the sieve material (31.5-50mm) of the middle layer screen is connected with the seventh tape conveyor 32 through the discharge passage, the seventh tape conveyor 32 is connected with the ninth tape conveyor 33 and the ninth tape conveyor 33 is connected with the finely crushed The buffer bin 24 is connected, and the material (3-31.5mm) on the screen of the lower floor of the three pre-screening machines is connected with the eighth adhesive tape machine 34 through the discharge channel, and the eighth adhesive tape machine 34 is connected with the eleventh adhesive tape machine 35 and The eleventh tape machine 35 is connected with the shaping sand-making buffer storehouse 36, and the unpowered powder selection device 31 below the pre-screening machine is connected with the twenty-first tape machine 50 and the twenty-first tape machine 50 is connected with the finished product warehouse six 56 (0 -3mm) connection.

As shown in Figures 9-11, the second screening area 9 is provided with two sets of screening machines, a total of six screening machines. The upper set of screening machines and the lower set of screening machines all include three screening machines arranged in parallel. The sub-machines all include three-layer screens set up and down and are equipped with a non-powered powder selection device at the bottom. The specifications of the three-layer screens of the upper group of screening machines 42 are 26.5*26.5mm, 16*16mm, and 3*3mm. The three-layer screen specifications of the group screening machine 43 are respectively 10*10mm, 5*5mm, and 3*3mm. Material screening is realized by setting screens with different apertures. 26.5-31.5mm) is connected with the sixteenth tape conveyor 44 through the discharge channel, and the middle layer screen mesh feeding (16-26.5mm) is connected with the seventeenth tape conveyor 45 through the discharge channel, and the sixteenth tape conveyor 44, The seventeenth belt conveyor 45 is respectively connected with the finished product storehouse one 51 (26.5-31.5mm) and the finished product storehouse two 52 (16-26.5mm), and the upper layer screen mesh of a group of screening machines 42 above is loaded (26.5-31.5mm) ), the material on the middle screen (16-26.5mm) can be combined to the sixteenth belt conveyor 44 through the flapper valve and transported to the finished product warehouse one 51 (16-31.5mm after adjustment), and the upper group of screening machines The lower sieve material (3-16mm) of 42 is connected with the upper sieve of the lower set of screening machines 43 through the chute, and the lower sieve material (0-3mm) of the upper set of sieving machines 42 passes through the twenty-second belt conveyor 46 Connected with the unpowered powder separator 31, the upper sieve feed (10-16mm) of the lower group of screening machines 43 is connected to the eighteenth belt conveyor 47 through the discharge channel, and the middle sieve feed (5-10mm) passes through the discharge Passage is connected with the 19th belt conveyor 48, and the bottom sieve feeding (3-5mm) is connected with the 20th belt conveyor 49 through the discharge passage, the 18th belt conveyor 47, the 19th belt conveyor 48, the 20th belt conveyor Machine 49 is respectively connected with finished product storehouse three 53 (10-16mm), finished product storehouse four 54 (5-10mm), finished product storehouse five 55 (3-5mm), and the upper strata sieve feeding (10-5mm) of a group of screening machine 43 below 16mm), middle sieve feeding (5-10mm) can be combined to the eighteenth belt conveyor 47 through the flapper valve and transported to the finished product warehouse three 53 (10-16mm) (5-16mm after adjustment), the lower group The lower sieve material (0-3mm) of the screening machine 43 is connected with the unpowered powder selection device 31 through the discharge channel, and the unpowered powder selection device 31 at the bottom of the second screening area 9 is connected with the twenty-first belt conveyor 50 and the second Twenty-one tape machine 50 is connected with finished product warehouse 6 (0-3mm), and the lower sieve feed (3-5mm) and lower sieve discharge (0-3mm) of the lower group of screening machines 43 can pass through the gate valve The materials are combined into the twenty-third belt conveyor and delivered to the finished product warehouse five 55 (0-5mm after adjustment).

The production line is equipped with a ventilation and dust removal system, and the ventilation and dust removal system includes a dust collector and a powder bin 57, and the dust collector includes a dust collector in the coarse crushing workshop, a dust collector in the mud removal and sieve workshop, a dust collector in the medium and fine crushing processing area, and a plasticizer. Area dust collector, first screen area dust collector, second screen area dust collector, finished product loading warehouse dust collector, each dust collector is a high-efficiency pulse bag filter and is connected to the air pressure system through the pipeline, and the air source power is provided by the air pressure system And the dust is collected to the powder silo 57 through the conveying system.

The present invention also provides a production method of limestone processing building aggregate, comprising the following steps:

S1 Coarse crushing and desilting steps: transport the raw materials to the raw material bin 11 of the coarse crushing workshop 2, and then crush them by the jaw crusher 13 after being fed by the heavy-duty bar feeder 12, and then convey the materials through the first belt conveyor 16 Go to the desilting screen workshop 1 for desilting, the undersize (<20mm) of the desilting sieve 14 is transported to the waste area 15 by the third belt conveyor 18, and the oversize (20-80mm) of the desilting sieve 14 is delivered by the third belt conveyor 18. The second belt conveyor 17 is transported to the fourth belt conveyor 19 above the semi-finished material area 3, and the material is discharged to the fifth belt conveyor 22 below the semi-finished material area 3 by the fourth belt conveyor 19. After the five belt conveyors 22 are evenly arranged, the fifth belt conveyor 22 is transported to the intermediate crushing buffer warehouse of the medium and fine crushing workshop 4;

Secondary crushing and pre-screening steps in S2: The intermediate crushing buffer bin puts the material into the intermediate crushing cone crusher 23 for crushing and then is transported to the first pre-screening machine 28 by the sixth belt conveyor 26, and the crushed material of the fine crushing cone crusher 25 is sent by the second Ten belt conveyors 27 are transported to the second pre-screening machine 29 and the third pre-screening machine 30 of a screening area 8, the sieving material (> 50mm) of the upper sieve of each pre-screening machine, the sieve material (> 50mm) of the middle sieve (31.5mm) -50mm) are conveyed to the fine crushing buffer bin 24 through the seventh belt conveyor 32 to the ninth belt conveyor 33 for closed circuit circulation, and the sieve material (3-31.5mm) of the lower screen passes through the eighth belt conveyor 34 to the eleventh belt conveyor 35 is transported to the shaping sand-making buffer warehouse 36, and the underscreen material (0-3mm) of the lower screen is selected by the unpowered powder selection device 31 and then transported to the finished product warehouse 6 56 (0-3mm) by the twenty-first belt conveyor 50 );

S3 Shaping step: the material entering the shaping sand making buffer bin 36 is selected to be shaped or not shaped, and the material to be shaped is transported by the unloading device to the feed inlet of three vertical shaft impact crushers 37, and then enters the first vertical shaft impact crusher after being impacted and crushed by the vertical shaft. The thirteenth tape machine 39, the fourteenth tape machine 40, the fifteenth tape machine 41, the materials that are not processed by shaping are directly sent to the thirteenth tape machine 39, the fourteenth tape machine through the sub-chute of the sand making buffer bin 36 40. The materials of the fifteenth belt conveyor 41, the thirteenth belt conveyor 39, the fourteenth belt conveyor 40, and the fifteenth belt conveyor 41 are transported to the second screening area 9 for processing;

S4 screening step: six screening machines in the second screening area and two sets of screening machines screen the materials according to different particle sizes. (16-26.5mm) are conveyed to finished product warehouse 1 (26.5-31.5mm) and finished product warehouse 2 52 (16-26.5mm) through the sixteenth belt conveyor 44 and the seventeenth belt conveyor 45 respectively, and a group of screening machines above The lower sieve material (3-16mm) of 42 enters the lower group of screening machines 43 through the chute, and the lower sieve material (0-3mm) of the upper group of screening machines 42 enters the unpowered powder separator through the twenty-second belt conveyor 46 After the powder is selected by the device 31, it is transported to the finished product warehouse 6 56 (0-3mm) by the twenty-first belt conveyor 50, and the upper sieve feeding (10-16mm) and the middle sieve feeding (5-10mm) of the lower group of screening machines 43 ), the lower sieve loading (3-5mm) is transported to the finished product warehouse three 53 (10-16mm) and the finished product warehouse four 54 ( 5-10mm), finished product warehouse five 55 (3-5mm), and the lower sieve material (0-3mm) of the lower group of sieving machines 43 enters the unpowered powder selection device 31 after powder selection and is transported by the twenty-first belt conveyor 50 To the finished product warehouse six 56 (0-3mm);

S5 Finished product loading step: For the materials transported to the finished product warehouses 151 to 6, they are loaded and sent out by the automatic conveying device.

The production method of limestone processing building aggregate also performs ventilation and dust removal operations in each step, provides air source for the dust collector through the air pressure system 58, and transports the dust from the workshop to the powder material bin 57 through the conveying system, so as to realize the production of each part of the production line. Dust recycling in all links ensures that there is no dust pollution in the production workshop and the whole process, and meets the requirements of environmental protection.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and are not used to limit the protection scope of the present invention. Equivalent transformations made on the basis of the above-mentioned embodiments all belong to the protection scope of the present invention.

Claims (10)

1. A limestone processing building aggregate production line is characterized in that: it comprises a coarse crushing workshop, a desilting and screening workshop, a semi-finished material area, a medium and fine crushing shaping workshop, a screening workshop and a finished product loading area arranged in sequence, and the coarse The crushing workshop is equipped with a raw material warehouse, a heavy-duty rod feeder, and a jaw crusher. The desilting and sieving workshop is equipped with a desilting screen. The fine crushing processing area and the shaping area, the screening workshop includes the first screening area and the second screening area, and each workshop is connected by a belt conveyor. 2. The limestone processing construction aggregate production line according to claim 1, characterized in that there are two raw material bins, heavy-duty rod feeders, and jaw crushers in the coarse crushing workshop, and the coarse crushing workshop The workshop is connected with the desilting screen workshop through the first belt conveyor, and the coarse crushing workshop is connected with the semi-finished material area through the second belt conveyor. 3. The limestone processing building aggregate production line according to claim 2, characterized in that: the desilting and screening workshop is connected to the semi-finished material area through the second belt conveyor, and at the same time, the desilting and screening workshop is connected to the waste material area through the third belt conveyor. Material area connection. 4. The limestone processing building aggregate production line according to claim 3, characterized in that: a fourth tape conveyor connected to the second tape conveyor is arranged above the semi-finished product material area, and a discharge trolley is arranged on the fourth tape conveyor, and the semi-finished product A corridor is set at the bottom of the material area, and a plurality of first vibrating feeders are evenly arranged in the corridor, and a fifth belt conveyor is installed below the first vibration feeder, and the semi-finished material area is connected with the medium and fine crushing workshop through the fifth belt conveyor. 5. The limestone processing building aggregate production line according to claim 4, characterized in that: the medium and fine crushing processing area includes a medium crushing processing area and a fine crushing processing area, and the medium crushing processing area includes a medium crushing buffer bin, a medium crushing cone Crusher, the fine crushing processing area includes a fine crushing buffer bin and a fine crushing cone crusher, the medium crushing cone crusher has two and shares a middle crushing buffer bin, and the fine crushing cone crusher has two and shares a fine crushing buffer bin, The outlets of the two secondary cone crushers are connected to the first pre-screening machine in a screening area through the sixth belt conveyor, and the outlets of the two fine cone crushers are connected to the first pre-screening machine in the first screening area through the tenth belt conveyor and the first pre-screening machine in the first screening area. The second pre-screening machine and the third pre-screening machine are connected. 6. The limestone processing construction aggregate production line according to claim 5, characterized in that: the shaping area includes a shaping sand-making buffer bin and a vertical shaft impact crusher, and there are three vertical shaft impact crushers and one of them is shared Shaping sand-making buffer bin, the shaping sand-making buffer bin is provided with a chute for diverting unshape materials, the shaping sand-making buffer bin is connected with the feed port of the vertical shaft impact crusher through the twelfth belt conveyor, the The sub-chute of the shaping sand-making buffer bin and the outlet of the vertical shaft impact crusher are all connected to at least one of the thirteenth belt conveyor, the fourteenth belt conveyor, and the fifteenth belt conveyor, and the thirteenth belt conveyor , the fourteenth tape machine, and the fifteenth tape machine are connected to the second screening area. 7. The limestone processing building aggregate production line according to claim 6, characterized in that: the first screening area includes a first pre-screening machine, a second pre-screening machine, and a third pre-screening machine arranged in parallel, each The pre-screening machines all include three layers of screens set up and down and are equipped with a non-powered powder selection device at the bottom. The screened materials of the upper screen of the three pre-screens and the screened materials of the middle screen pass through the discharge channel and the seventh screen. Tape machine connection, the seventh tape machine is connected with the ninth tape machine and the ninth tape machine is connected with the crushing buffer bin, the sieve material on the lower screen of the three pre-screening machines is connected with the eighth tape machine through the discharge channel, the The eighth belt machine is connected with the eleventh belt machine and the eleventh belt machine is connected with the shaping sand making buffer bin, the unpowered powder selection device under the pre-screening machine is connected with the twenty-first belt machine and the twenty-first belt machine is connected with the Finished library six connections. 8. The limestone processing building aggregate production line according to claim 7, characterized in that: the two screening areas are equipped with two sets of screening machines, a total of six screening machines, the upper set of screening machines and the lower set of screening machines are both It includes three screening machines set in parallel. Each screening machine includes three layers of screens set up and down and a non-powered powder selection device at the bottom. The upper set of screening machines and the lower set of screening machines pass through screens with different aperture The upper screen of the upper group of screening machines is connected to the sixteenth belt conveyor through the discharge channel, and the middle screen is connected to the seventeenth belt conveyor through the discharge channel. The sixteenth belt machine and the seventeenth belt machine are respectively connected with the finished product warehouse one and the finished product warehouse two. The upper screen feeding of the upper group of screening machines is connected with the upper screen of the lower group of screening machines through the chute, and the upper group of screening machines The lower sieve material is connected to the unpowered powder separator through the 22nd belt conveyor, the upper sieve material of the lower set of screening machines is connected to the 18th belt machine through the discharge channel, and the middle sieve material is passed through the discharge channel It is connected with the 19th belt conveyor, and the material on the lower screen is connected with the 20th belt conveyor through the discharge channel. 5. The finished product warehouse is connected to five, the lower sieve material of the lower group of screening machines is connected to the unpowered powder selection device through the discharge channel, and the unpowered powder selection device at the bottom of the second screening area is connected to the twenty-first belt machine and the second Eleven adhesive tape machines are connected with finished product warehouse six. 9. The limestone processing building aggregate production line according to any one of claims 1-8, characterized in that: the production line is provided with a ventilation and dust removal system, and the ventilation and dust removal system includes a dust collector and a powder hopper. The above-mentioned dust collectors include coarse crushing workshop dust collectors, desilting screen workshop dust collectors, medium and fine crushing processing area dust collectors, shaping area dust collectors, first screening area dust collectors, second screening area dust collectors, finished product loading warehouse dust collectors, each dust collector The air source is provided by the air pressure system and the dust is collected to the powder silo through the conveying system. 10. A production method of limestone processing building aggregate, characterized in that, comprising the steps of: S1 Coarse crushing and desliming steps: transport the raw materials to the raw material warehouse of the coarse crushing workshop, and then crush them by the jaw crusher after being fed by the heavy-duty bar feeder, and then transport the materials to the desliming and screening workshop through the first belt conveyor For desilting, the undersized material of the desilting screen is transported to the discarding area by the third belt conveyor, and the sieved material of the desilting sieve is transported by the second belt conveyor to the fourth belt conveyor above the semi-finished product material area, and is conveyed by the fourth belt conveyor The machine unloads the material to the fifth belt conveyor below the semi-finished material area, and the material is evenly arranged on the fifth belt conveyor through the vibrating feeder, and then transported by the fifth belt conveyor to the medium crushing buffer bin of the medium and fine crushing workshop; S2 Intermediate crushing and pre-screening steps: The intermediate crushing buffer bin puts the material into the intermediate crushing cone crusher, after being crushed, it is transported to the first pre-screening machine by the sixth belt conveyor, and the crushed material of the fine crushing cone crusher is conveyed by the tenth belt conveyor To the second pre-screening machine and the third pre-screening machine in the first screening area, the screened material of the upper screen of each pre-screening machine and the screened material of the middle screen are all transferred to the ninth belt conveyor through the seventh belt conveyor. The fine crushing buffer warehouse is closed-circuit cycle, and the sieve material of the lower screen is transported to the sand making buffer warehouse through the eighth belt conveyor to the eleventh belt conveyor, and the underscreen material of the lower screen is selected by the non-powered powder selection device and then passed through the first Twenty-one belt conveyors are transported to the finished product warehouse six; S3 Shaping step: The material entering the shaping sand making buffer bin is selected to be shaped or not shaped, and the material to be shaped is transported to the feed port of the three vertical shaft impact crushers by the unloading device, and enters the thirteenth vertical shaft impact crusher after being impacted and crushed by the vertical shaft. Tape machine, the fourteenth tape machine, the fifteenth tape machine, the materials without plastic treatment are sent directly to the thirteenth tape machine, the fourteenth tape machine, and the fifteenth tape machine through the sub-chute of the plastic sand making buffer bin, The materials of the thirteenth belt conveyor, the fourteenth belt conveyor, and the fifteenth belt conveyor are transported to the second screening area for processing; S4 Screening step: six screening machines in the second screening area and two sets of screening machines screen the materials according to different particle sizes, and the upper and middle screens of the upper group of screening machines pass through the sixteenth belt conveyor, The seventeenth belt conveyor is transported to finished product warehouse 1 and finished product warehouse 2. The material on the lower screen of the upper group of screening machines enters the lower group of screening machines through the chute, and the material of the lower screen of the upper group of screening machines passes through the twenty-second belt After the machine enters the unpowered powder selection device, the powder is transported to the finished product warehouse 6 through the 21st belt conveyor, and the upper sieve, the middle sieve, and the lower sieve of the lower group of screening machines pass through the 18th belt conveyor respectively. The 19th and 20th belt conveyors are transported to the finished product warehouse 3, finished product warehouse 4 and finished product warehouse 5, and the lower sieve material of the lower group of screening machines enters the unpowered powder selection device and passes through the 21st The tape machine transports to the finished product warehouse six; S5 Finished product loading step: For the materials transported to finished product warehouses 1 to 6, they are loaded and sent out by automatic conveying device.