CN111573323A - Dual-system raw coal storage, transportation and processing system and process thereof - Google Patents
Dual-system raw coal storage, transportation and processing system and process thereof Download PDFInfo
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- CN111573323A CN111573323A CN202010454030.5A CN202010454030A CN111573323A CN 111573323 A CN111573323 A CN 111573323A CN 202010454030 A CN202010454030 A CN 202010454030A CN 111573323 A CN111573323 A CN 111573323A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G67/00—Loading or unloading vehicles
- B65G67/02—Loading or unloading land vehicles
- B65G67/24—Unloading land vehicles
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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
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
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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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/02—Devices for feeding articles or materials to conveyors
- B65G47/16—Devices for feeding articles or materials to conveyors for feeding materials in bulk
- B65G47/18—Arrangements or applications of hoppers or chutes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/52—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/02—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads
- B65G65/04—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads with pick-up shovels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/32—Filling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/48—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G67/00—Loading or unloading vehicles
- B65G67/02—Loading or unloading land vehicles
- B65G67/04—Loading land vehicles
- B65G67/06—Feeding articles or materials from bunkers or tunnels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Aviation & Aerospace Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention belongs to the field of coal coke storage and transportation of large-scale medium-low temperature coal pyrolysis, and particularly relates to a dual-system raw coal storage, transportation and processing system and a process thereof. The system comprises an automobile coal unloading system, a raw coal processing system, a raw coal storage and transportation system and a raw coal external transportation vehicle system, wherein the automobile coal unloading system comprises a main system and an auxiliary system, the main system is connected with the raw coal processing system through a second belt conveyor, and the auxiliary system is connected with the raw coal storage and transportation system through a fourth belt conveyor; the raw coal storage and transportation system is connected with the raw coal conveying and processing system through a second belt conveyor; the raw coal conveying and processing system comprises a first vibrating screen, a double-geared roller crusher and a second vibrating screen, and pulverized coal after crushing and screening is conveyed to different furnace groups and a raw coal external conveying and loading system through a fifth belt type, a sixth belt type, a seventh belt type and an eighth belt type. The invention realizes the combination of direct processing and use of coal and storage and use in a coal yard by arranging a main system and an auxiliary system, and ensures stable and continuous feeding of a subsequent pyrolysis working section to the maximum extent.
Description
Technical Field
The invention belongs to the field of coal coke storage and transportation of large-scale medium-low temperature coal pyrolysis, and particularly relates to a dual-system raw coal storage, transportation and processing system and a process thereof.
Background
The low-rank coal resources such as brown coal, long flame coal, weakly caking coal and non-caking coal in China are rich, accounting for 55% of the national coal yield and accounting for more than 80% of the Shaanxi, Nemeng and Xinjiang coal yield. The low-rank coal can realize grading and quality-grading conversion thereof in a medium-low temperature pyrolysis mode, and three energy products of coal gas, coal tar and semicoke are obtained. At present, the total energy of semicoke in China is about 1 hundred million tons per year, and an internal heating type vertical furnace is mainly adopted in the pyrolysis process.
The raw coal storage and transportation device is a feeding supply system of an internal heating type vertical furnace group and is vital to maintaining stable production of the furnace group. At present, a single-coal-feeding system is adopted for a vertical furnace group, namely raw coal is transported into a vehicle from the outside of a site, directly unloaded to a single or a plurality of coal receiving pits, then conveyed to a coal screening chamber by a belt conveyor below the coal receiving pits for screening, and qualified coal as fired is screened and conveyed to the vertical furnace group. Generally, the process is simple in process, less in equipment, compact in arrangement and convenient to operate, and the coal feeding process is basically adopted by small and medium-sized semi-coke plants at home and abroad. However, with the increase of the number of the existing furnace groups, a single furnace group is upgraded into a double furnace group or even four furnace groups, and with the increase of the productivity of a single furnace, the scale of the single furnace group is increased, the raw coal quantity required by the whole furnace group is increased from millions of tons to nearly tens of millions of tons every year, the traditional simple coal feeding process cannot guarantee uniform and stable feeding of the multiple furnace groups, and meanwhile, the problem of large quantity of stockpiling and taking of the raw coal in a site cannot be solved through the original process.
Disclosure of Invention
The invention aims to: the double-system raw coal storage, transportation and processing system and the process thereof are provided to solve the defects that the conventional coal feeding process cannot ensure uniform and stable feeding for multiple furnace groups and the raw coal is stored in a large amount in a yard and is inconvenient to take.
The technical scheme adopted by the invention is as follows:
a dual-system raw coal storage and transportation processing system comprises an automobile coal unloading system, a raw coal processing system and a raw coal storage and transportation system, wherein the automobile coal unloading system consists of a main system and an auxiliary system, the main system comprises a coal unloading groove for containing raw coal, an impeller coal feeder is arranged at an outlet of the coal unloading groove, and the impeller coal feeder is connected with the raw coal processing system through a first belt conveyor and a second belt conveyor in sequence; the auxiliary system comprises a coal unloading pit, a first electro-hydraulic gate valve is arranged at an outlet of the coal unloading pit and connected with a first vibrating feeder, and the first vibrating feeder is connected with the raw coal storage and transportation system sequentially through a third belt conveyor and a fourth belt conveyor.
Further, the raw coal storage and transportation system comprises a bucket-wheel stacker-reclaimer, a strip-shaped storage yard is arranged below the bucket-wheel stacker-reclaimer, and the strip-shaped storage yard is connected with the raw coal conveying and processing system through a second belt conveyor.
Further, the raw coal conveying and processing system comprises a first vibrating screen, a crushing buffer bin, a second vibrating screen and a middle buffer bin, wherein the crushing buffer bin feeds materials to the second vibrating screen through a third electro-hydraulic gate valve and a third vibrating feeder, and the second vibrating screen is connected with the middle buffer bin through a fifth belt conveyor and a sixth belt conveyor; the middle buffer bin is provided with double outlets, a fourth electro-hydraulic gate valve is arranged at each outlet, a fourth vibrating feeder is connected to each outlet of the fourth electro-hydraulic gate valve, one of the fourth vibrating feeders is connected with a seventh belt conveyor, and the other fourth vibrating feeder is connected with an eighth belt conveyor.
Further, the raw coal conveying and processing system further comprises a front screen buffer bin, and the front screen buffer bin feeds the raw coal to the first vibrating screen through a second electro-hydraulic gate valve and a second vibrating feeder.
Furthermore, a double-geared roller crusher is further arranged between the first vibrating screen and the crushing buffer bin, and unqualified raw coal screened by the first vibrating screen enters the crushing buffer bin after being crushed by the double-geared roller crusher.
Further, the dual-system raw coal storage, transportation and processing system further comprises a raw coal external transportation and loading system, the raw coal external transportation and loading system comprises an electro-hydraulic three-way material distributor and a pulverized coal silo, the electro-hydraulic three-way material distributor is connected with the pulverized coal silo through a tenth belt conveyor, and an electro-hydraulic jaw type gate is arranged at an outlet of the pulverized coal silo.
Furthermore, the coal unloading groove is a groove-shaped slit type coal unloading bin, and the coal unloading pit is a pyramid-shaped coal unloading bin.
A double-system raw coal storage and transportation processing technology comprises the following steps:
s1, unloading coal from an automobile into a coal unloading groove, and dropping the raw coal onto a first belt conveyor and then onto a second belt conveyor through an impeller coal feeder below the coal unloading groove;
s2, unloading coal from an automobile into a coal unloading pit, and dropping the raw coal onto a third belt conveyor through an electro-hydraulic gate valve and a vibrating feeder below the coal unloading pit;
s3, transferring the raw coal on the third belt conveyor to a strip-shaped storage yard through the fourth belt conveyor, taking the raw coal through a bucket-wheel stacker-reclaimer, and uniformly and continuously taking the raw coal in the strip-shaped storage yard to the second belt conveyor to realize the standby function of storage and taking of a secondary system;
s4, feeding the raw coal of the second belt conveyor into a screen front buffer bin, and feeding the raw coal to a first vibrating screen through a second electro-hydraulic gate valve and a second vibrating feeder after buffering;
s5, directly feeding qualified raw coal into a crushing buffer bin, feeding unqualified raw coal into a double-geared roller crusher, and feeding the crushed raw coal into the crushing buffer bin after crushing;
s6, feeding the raw coal in the crushing buffer bin to a second vibrating screen through a third electro-hydraulic gate valve and a third vibrating feeder, and after secondary screening, conveying qualified pulverized coal to a middle buffer bin through a fifth belt conveyor and a sixth belt conveyor, and conveying unqualified pulverized coal to a raw coal external transport and loading system;
s7, feeding the pulverized coal in the middle buffer bin to a seventh belt conveyor and an eighth belt conveyor through a fourth electro-hydraulic gate valve and a fourth vibrating feeder, and sending the pulverized coal to different furnace groups in two paths.
Further, the unqualified raw coal in the step S5 is pulverized coal with a particle size of more than 80mm, and the qualified raw coal is pulverized coal with a particle size of less than or equal to 80 mm.
Further, the qualified pulverized coal in the step S6 is pulverized coal with a particle size of 10-80mm, and the unqualified pulverized coal is pulverized coal with a particle size of less than 10 mm.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the main system and the auxiliary system are arranged, one part of coal coming from an automobile is directly unloaded into the main system, the other part of coal coming from the automobile is unloaded into the auxiliary system, and raw coal of the auxiliary system is conveyed to the raw coal storage and transportation system through the third belt conveyor and the fourth belt conveyor, so that the combination of direct processing and use of the coming coal and storage and use in a coal yard is realized, and the stable and continuous feeding of a subsequent pyrolysis working section is ensured to the maximum extent.
(2) The main system and the auxiliary system share the raw coal conveying and processing system, and the raw coal stored by the auxiliary system is taken and then merged into the raw coal processing system of the main system, so that the process is simplified, the investment is reduced, and the stability of the raw coal processing system is ensured.
(3) The bucket-wheel stacker-reclaimer adopted by the raw coal storage and transportation system can also realize the partition classification stacking, and provides possibility for different furnace groups to receive different coal types.
Drawings
FIG. 1 is a schematic structural diagram of a dual-system raw coal storage, transportation and processing device provided by the invention;
FIG. 2 is a flow chart of a dual system raw coal storage and transportation process provided by the present invention;
wherein, 1-a coal unloading groove, 2-a coal impeller feeder, 3-a first belt conveyor, 4-a coal unloading pit, 5-a first electro-hydraulic gate valve, 6-a first vibrating feeder, 7-a third belt conveyor, 8-a fourth belt conveyor, 9-a bucket wheel stacker reclaimer, 10-a strip yard, 11-a second belt conveyor, 12-a pre-screen buffer bin, 13-a second electro-hydraulic gate valve, 14-a second vibrating feeder, 15-a first vibrating screen, 16-a double-toothed roller crusher, 17-a crushing buffer bin, 18-a third electro-hydraulic gate valve, 19-a third vibrating feeder, 20-a second vibrating screen, 21-a fifth belt conveyor, 22-a sixth belt conveyor, 23-an intermediate buffer bin, 24-a fourth electro-hydraulic gate valve, 25-a fourth vibrating feeder, 26-a seventh belt conveyor, 27-an eighth belt conveyor, 28-an electro-hydraulic three-way distributor, 29-a ninth belt conveyor, 30-a tenth belt conveyor, 31-a pulverized coal silo, 32-an electro-hydraulic jaw gate, A-1 furnace group, B-2 furnace group, C-a subsequent process and D-an external transport truck.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms first and second are not intended to be sequential, but rather to distinguish one element from another.
Example 1
Referring to fig. 1 and 2, a dual-system raw coal storage and transportation system comprises an automobile coal unloading system, a raw coal processing system and a raw coal storage and transportation system, wherein the automobile coal unloading system comprises a main system and a secondary system, the main system comprises a coal unloading groove 1 for containing raw coal, an impeller coal feeder 2 is arranged at an outlet of the coal unloading groove 1, and the impeller coal feeder 2 is connected with the raw coal processing system through a first belt conveyor 3 and a second belt conveyor 11 in sequence; the auxiliary system comprises a coal unloading pit 4, a first electro-hydraulic gate valve 5 is arranged at an outlet of the coal unloading pit 4, the first electro-hydraulic gate valve 5 is connected with a first vibrating feeder 6, and the first vibrating feeder 6 is connected with the raw coal storage and transportation system through a third belt conveyor 7 and a fourth belt conveyor 8 in sequence. As a preferred scheme, the coal unloading groove 1 is a groove-shaped slit type coal unloading bin, and the coal unloading pit 4 is a pyramid-shaped coal unloading bin.
The raw coal storage and transportation system comprises a bucket-wheel stacker-reclaimer 9, a strip-shaped storage yard 10 is arranged below the bucket-wheel stacker-reclaimer 9, and the strip-shaped storage yard 10 is connected with the raw coal conveying and processing system through a second belt conveyor 11. The raw coal storage and transportation system adopts two bucket-wheel stacker-reclaimers 9 to reclaim materials, which are mutually spare, and coal is reclaimed when coal is piled in a storage yard to complete the stacking and reclaiming work in a large-area bar-shaped coal yard, and the bar-shaped coal yard piles the raw coal of different coal types in a subarea manner to convey different pulverized coal for different furnace groups.
The raw coal conveying and processing system comprises a first vibrating screen 15, a crushing buffer bin 17, a second vibrating screen 20 and a middle buffer bin 23, wherein raw coal conveyed from a raw coal storage and transportation system and an automobile coal unloading system is screened by the first vibrating screen 15, qualified raw coal directly enters the crushing buffer bin 17 for buffering, and is fed to the second vibrating screen 20 through a third electric hydraulic gate valve 18 and a third vibrating feeder 19; qualified coal as fired after being sieved by the second vibrating screen 20 is conveyed to an intermediate buffer bin 23 through a fifth belt conveyor 21 and a sixth belt conveyor 22; the middle buffering bin 23 is provided with double outlets, a fourth electro-hydraulic gate valve 24 is arranged at each outlet, a fourth vibrating feeder 25 is connected to each outlet of the fourth electro-hydraulic gate valve 24, one of the fourth vibrating feeders 25 conveys the finished coal to the position A through a seventh belt conveyor 26, and the other fourth vibrating feeder 25 conveys the finished coal to the position B through an eighth belt conveyor 27.
In addition, the raw coal conveying and processing system adopts two-way arrangement, one-way operation and one-way standby.
Example 2
On the basis of embodiment 1, the raw coal conveying and processing system further comprises a pre-screening buffer bin 12, a second electro-hydraulic gate valve 13 is arranged at an outlet of the pre-screening buffer bin 12, the second electro-hydraulic gate valve 13 is connected with a second vibrating feeder 14 through a chute, and the vibrating feeder 14 feeds to a first vibrating screen 15.
Example 3
On the basis of embodiment 1, a double-geared roller crusher 16 is further arranged between the first vibrating screen 15 and the crushing buffer bin 17, and the unqualified raw coal screened by the first vibrating screen 15 enters the crushing buffer bin 17 after being crushed by the double-geared roller crusher 16. The double-tooth crushing roller 16 has two sets of independent driving devices, and the two crushing rollers can work independently. During crushing, the working system can be changed according to the amount of raw coal, namely, a single machine is started when the amount of raw coal is small, and a double machine is started when the amount of raw coal is large, so that the crushing of the large-scale raw coal can be realized, and the crushing of the small-scale raw coal can be satisfied. In addition, when one crushing roller breaks down, the crushing of unqualified raw coal is not influenced.
Example 4
On the basis of the embodiment 1, the dual-system raw coal storage and transportation processing device further comprises a raw coal external transportation and loading system used for receiving unqualified fired coal (pulverized coal) screened by the second vibrating screen 20, the raw coal external transportation and loading system comprises an electro-hydraulic three-way distributor 28, an outlet of the electro-hydraulic three-way distributor 28 is connected with a ninth belt conveyor 29 and a tenth belt conveyor 30, an outlet of the tenth belt conveyor 30 is connected with a pulverized coal silo 31, and an outlet of the pulverized coal silo 31 is provided with an electro-hydraulic jaw gate 32. Preferably, a plurality of pulverized coal silos 31 are arranged in parallel, 4 discharging ports are arranged below each pulverized coal silo 31, electro-hydraulic jaw type gates 32 are used for discharging and loading, 2 pulverized coal silos are arranged in one group, one underground weigher is arranged below each group of silos, and one transport vehicle is correspondingly charged.
Example 5
A double-system raw coal storage and transportation processing technology comprises the following steps:
s1, unloading coal from an automobile into a coal unloading groove in a self-unloading or mechanical coal unloading mode, and dropping the raw coal onto a first belt conveyor and then onto a second belt conveyor through an impeller coal feeder below the coal unloading groove;
s2, unloading coal from an automobile into a coal unloading pit, and dropping the raw coal onto a third belt conveyor through an electro-hydraulic gate valve and a vibrating feeder below the coal unloading pit;
s3, transferring the raw coal on the third belt conveyor to a strip-shaped storage yard through the fourth belt conveyor, taking the raw coal through a bucket-wheel stacker-reclaimer, and uniformly and continuously taking the raw coal in the strip-shaped storage yard to the second belt conveyor to realize the standby function of storage and taking of a secondary system;
s4, feeding the raw coal of the second belt conveyor into a screen front buffer bin, and feeding the raw coal to a first vibrating screen through a second electro-hydraulic gate valve and a second vibrating feeder after buffering;
s5, separating two kinds of mixed coal through primary screening, wherein unqualified raw coal larger than 80mm enters a double-geared roller crusher, the crushed raw coal enters a crushing buffer bin, and qualified raw coal smaller than or equal to 80mm is directly mixed into the crushing buffer bin;
s6, feeding the raw coal in the crushing buffer bin to a second vibrating screen through a third electro-hydraulic gate valve and a third vibrating feeder, after secondary screening, feeding the qualified coal fed into the furnace by a 10-80mm sieve to a middle buffer bin through a fifth belt conveyor, and feeding the unqualified coal powder below the 10mm sieve to a subsequent device or a raw coal external transportation and loading system;
s7, feeding the pulverized coal in the middle buffer bin to a seventh belt conveyor and an eighth belt conveyor through a fourth electro-hydraulic gate valve and a fourth vibrating feeder, and sending the pulverized coal to different furnace groups in two paths.
Example 6
On the basis of embodiment 5, the specific steps of sending the small-particle-size pulverized coal in step S6 to the raw coal external transportation and loading system are as follows:
s61, passing the unqualified pulverized coal screened by the second vibrating screen through a tenth belt conveyor to send a hydraulic three-way material distributor;
s62, conveying one part of the pulverized coal separated by the electro-hydraulic three-way distributor to a subsequent working section C through a ninth belt conveyor, and conveying the other part of the pulverized coal to a pulverized coal silo through a tenth belt conveyor;
s63, discharging the pulverized coal filtered by the pulverized coal silo by using an electro-hydraulic jaw gate, and carrying out external transportation on the vehicle D.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The double-system raw coal storage and transportation processing system is characterized by comprising an automobile coal unloading system, a raw coal conveying and processing system and a raw coal storage and transportation system, wherein the automobile coal unloading system consists of a main system and an auxiliary system, the main system comprises a coal unloading groove (1) for containing raw coal, an impeller coal feeder (2) is arranged at an outlet of the coal unloading groove (1), and the impeller coal feeder (2) is connected with the raw coal processing system through a first belt conveyor (3) and a second belt conveyor (11) in sequence; the auxiliary system comprises a coal unloading pit (4), a first electro-hydraulic gate valve (5) is arranged at an outlet of the coal unloading pit (4), the first electro-hydraulic gate valve (5) is connected with a first vibrating feeder (6), and the first vibrating feeder (6) is connected with the raw coal storage and transportation system sequentially through a third belt conveyor (7) and a fourth belt conveyor (8).
2. The dual-system raw coal storage and transportation system of claim 1, wherein the raw coal storage and transportation system comprises a bucket-wheel stacker-reclaimer (9), a strip-shaped storage yard (10) is arranged below the bucket-wheel stacker-reclaimer (9), and the strip-shaped storage yard (10) is connected with the raw coal transportation and processing system through a second belt conveyor (11).
3. The dual-system raw coal storage and transportation processing system of claim 1, wherein the raw coal conveying and processing system comprises a first vibrating screen (15), a crushing buffer bin (17), a second vibrating screen (20) and an intermediate buffer bin (23), the crushing buffer bin (17) is fed to the second vibrating screen (20) through a third electro-hydraulic gate valve (18) and a third vibrating feeder (19), and the second vibrating screen (20) is connected with the intermediate buffer bin (23) through a fifth belt conveyor (21) and a sixth belt conveyor (22); the middle buffer bin (23) is provided with double outlets, each outlet is provided with a fourth electro-hydraulic gate valve (24), each outlet of the fourth electro-hydraulic gate valve (24) is connected with a fourth vibrating feeder (25), one of the fourth vibrating feeders (25) is connected with a seventh belt conveyor (26), and the other fourth vibrating feeder (25) is connected with an eighth belt conveyor (27).
4. The dual-system raw coal storage and transportation processing system of claim 3, further comprising a pre-screen buffer bin (12), wherein the pre-screen buffer bin (12) is fed to the first vibrating screen (15) through a second electro-hydraulic gate valve (13) and a second vibrating feeder (14).
5. The dual-system raw coal storage, transportation and processing system as claimed in claim 3, wherein a double-toothed roller crusher (16) is further arranged between the first vibrating screen (15) and the crushing buffer bin (17), and unqualified raw coal screened by the first vibrating screen (15) enters the crushing buffer bin (17) after being crushed by the double-toothed roller crusher (16).
6. The dual-system raw coal storage, transportation and processing system of claim 1, further comprising a raw coal external transportation and loading system, wherein the raw coal external transportation and loading system comprises an electro-hydraulic three-way distributor (28) and a pulverized coal silo (31), the electro-hydraulic three-way distributor (28) is connected with the pulverized coal silo (31) through a tenth belt conveyor (30), and an electro-hydraulic jaw gate (32) is arranged at an outlet of the pulverized coal silo (31).
7. The dual-system raw coal storage, transportation and processing system according to any one of claims 1 to 6, wherein the coal discharge chute (1) is a chute-type coal discharge bin, and the coal discharge pit (4) is a pyramid-shaped coal discharge bin.
8. A double-system raw coal storage and transportation processing technology is characterized by comprising the following steps:
s1, unloading coal from an automobile into a coal unloading groove, and dropping the raw coal onto a first belt conveyor and then onto a second belt conveyor through an impeller coal feeder below the coal unloading groove;
s2, unloading coal from an automobile into a coal unloading pit, and dropping the raw coal onto a third belt conveyor through an electro-hydraulic gate valve and a vibrating feeder below the coal unloading pit;
s3, transferring the raw coal on the third belt conveyor to a strip-shaped storage yard through the fourth belt conveyor, taking the raw coal through a bucket-wheel stacker-reclaimer, and uniformly and continuously taking the raw coal in the strip-shaped storage yard to the second belt conveyor to realize the standby function of storage and taking of a secondary system;
s4, feeding the raw coal of the second belt conveyor into a screen front buffer bin, and feeding the raw coal to a first vibrating screen through a second electro-hydraulic gate valve and a second vibrating feeder after buffering;
s5, directly feeding qualified raw coal into a crushing buffer bin, feeding unqualified raw coal into a double-geared roller crusher, and feeding the crushed raw coal into the crushing buffer bin after crushing;
s6, feeding the raw coal in the crushing buffer bin to a second vibrating screen through a third electro-hydraulic gate valve and a third vibrating feeder, and after secondary screening, conveying qualified pulverized coal to a middle buffer bin through a fifth belt conveyor and a sixth belt conveyor, and conveying unqualified pulverized coal to a raw coal external transport and loading system;
s7, feeding the pulverized coal in the middle buffer bin to a seventh belt conveyor and an eighth belt conveyor through a fourth electro-hydraulic gate valve and a fourth vibrating feeder, and sending the pulverized coal to different furnace groups in two paths.
9. The dual-system raw coal storage and transportation processing process of claim 8, wherein the unqualified raw coal in the step S5 is pulverized coal with a particle size of more than 80mm, and the qualified raw coal is pulverized coal with a particle size of less than or equal to 80 mm.
10. The dual-system raw coal storage and transportation processing process of claim 8, wherein the qualified pulverized coal in the step S6 is pulverized coal with a particle size of 10-80mm, and the unqualified pulverized coal is pulverized coal with a particle size of less than 10 mm.
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| CN112158609A (en) * | 2020-09-23 | 2021-01-01 | 天地科技股份有限公司 | Intelligent coal storage, transportation and loading system and coordination control method thereof |
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