CN115262327B - Automatic adjusting system and adjusting method for asphalt mixing station flash - Google Patents
Automatic adjusting system and adjusting method for asphalt mixing station flash Download PDFInfo
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- CN115262327B CN115262327B CN202211177964.4A CN202211177964A CN115262327B CN 115262327 B CN115262327 B CN 115262327B CN 202211177964 A CN202211177964 A CN 202211177964A CN 115262327 B CN115262327 B CN 115262327B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
- E01C19/1063—Controlling the operations
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
- E01C19/1068—Supplying or proportioning the ingredients
- E01C19/1072—Supplying or proportioning the ingredients the solid ingredients
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Abstract
The utility model provides an asphalt mixing station flash automatic adjustment system, relate to pitch production facility technical field, including cold charge feeding system, drying system, the shale shaker, the hot feed bin, PLC control system, cold charge feeding system includes a plurality of cold feed bins, every cold feed bin below correspondence is equipped with cold aggregate belt weigher, cold aggregate belt weigher below is equipped with belt conveyor, drying system is connected to the shale shaker through hot aggregate lifting machine, the shale shaker below is located to the hot feed bin, including a plurality of storage check that correspond with the cold feed bin, an overflow pipe is connected on every storage check upper portion, every flash bottom of pipe is equipped with flash belt weigher, the discharge end of every flash belt weigher is connected to hot aggregate lifting machine, flash belt weigher, cold aggregate belt weigher and belt conveyor respectively with PLC control system electrical connection. When a certain storage grid has flash, the flash is automatically metered by the flash belt weigher and transmitted to the PLC control system, and the PLC control system correspondingly adjusts the feeding amount of each cold storage bin according to the change of the flash amount.
Description
Technical Field
The invention relates to the technical field of asphalt production equipment, in particular to an automatic adjusting system and an automatic adjusting method for flash of an asphalt mixing station.
Background
The asphalt mixture is an artificial synthetic material formed by cementing natural or artificial mineral aggregate, filling material, various admixtures and the like together by using an asphalt material. The asphalt mixing station is a complete set of equipment for producing asphalt mixture, and mainly stirs aggregate, additive and asphalt which are subjected to heating calculation in a stirring cylinder to form the asphalt mixture.
During the start-up production process of the asphalt mixing station, the phenomena of overflowing or material waiting often exist, namely excessive hot aggregate in a hot aggregate bin overflows or the hot aggregate is short of materials. If the flash phenomenon of hot aggregate is slight, set up a flash storehouse usually and collect the hot aggregate that overflows, send to the drying drum again and heat once more after waiting that flash storehouse is full, not only can cause the waste of flash material, heat once more moreover and increase the energy consumption, reduce output. If the overflow phenomenon of the hot aggregate is serious, intermittent shutdown and ignition startup of a mixing plant can be caused, so that stable production and paving are influenced on one hand, and particularly flatness is influenced by intermittent shutdown of a paver; on the other hand, the stability of the quality of the asphalt mixture is influenced, particularly, the temperature of the asphalt mixture is unstable after starting up at each ignition, and the phenomenon of material whitening caused by low temperature is easy to occur. Therefore, the mixing station flash automatic adjusting system and the adjusting method thereof are provided.
Disclosure of Invention
The invention provides an automatic adjusting system and an automatic adjusting method for asphalt mixing station flash, and mainly aims to overcome the defects that when hot aggregate flash occurs in the existing asphalt mixing station, the energy consumption is increased, the yield is reduced, the stable production and the stability of the quality of an asphalt mixture are influenced, and the like.
The invention adopts the following technical scheme:
the utility model provides an asphalt mixing station flash automatic adjustment system, includes cold charge feeding system, drying system, hot aggregate lifting machine, shale shaker and hot feed bin, cold charge feeding system includes a plurality of cold feed bin and a band conveyer, and the blowing door below correspondence of every cold feed bin bottom is equipped with a cold aggregate belt weigher, by cold aggregate belt weigher feed extremely band conveyer, band conveyer's discharge end is connected to drying system's feed end, drying system's discharge end passes through hot aggregate lifting machine is connected to the shale shaker, the shale shaker include a plurality of with the corresponding screening discharge gate of cold feed bin, this automatic adjustment system still includes PLC control system, flash pipe and flash weigher, the hot feed bin include a plurality of with the corresponding storage check of screening discharge gate, one is connected to the upper portion side of every storage check the flash pipe, every flash pipe bottom correspondence is equipped with one the flash weigher, the discharge end of every flash weigher is connected to the feed end of hot aggregate lifting machine, every the PLC belt weigher respectively with the flash control system electrical connection of belt weigher, the cold aggregate belt weigher still is connected with the band conveyer respectively.
In a preferred embodiment, a high material level detection switch is respectively arranged at the upper part of the inner wall of each material storage grid.
In a preferred embodiment, the drying system comprises a drying drum, the discharge end of the drying drum is connected with the hot aggregate elevator through a chute pipe, and the discharge end of the overflow belt weigher is connected with the chute pipe through a material return pipe.
In a preferred embodiment, the number of the cold storage bins is six, six screening discharge ports are correspondingly arranged on the vibrating screen, and six storage grids are correspondingly arranged.
The invention also provides an automatic adjusting method for the overflow of the asphalt mixing station, which comprises the automatic adjusting system for the overflow of the asphalt mixing station as claimed in claim 1, and comprises the following specific steps:
(1) If storage grid B in hot material bin x During material overflow, the hot material bin has n material storing lattices and the xth material storing lattice is B x N cold storage bins and the x-th cold storage bin is A x N is a natural number greater than 1, and x is a natural number not less than 1; the overflowed hot aggregate enters the overflow belt weigher through the corresponding overflow pipe, and the overflow belt weigher senses to obtain the overflow amount B 0 And transmits the data to a PLC control system in real time;
(2) When x is more than 1 and less than n, the PLC control system controls the overflow amount B 0 The feeding amount of each cold material bin is correspondingly adjusted by the change of the cold material bins, and the adjustment mode is as follows:
a. firstly, the cold material bin A corresponding to the material storage grid is adjusted x Reducing the material loading to 0, and observing the overflow B 0 A change in (c);
b. if the amount of the overflow material B 0 Reducing, namely removing the cold material bin A with the material loading of 0 in the step a x The rest cold material bins are increased in proportion to ensure that the conveying capacity of the hot aggregate hoister is unchanged until the material storage grid B x When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased x The feeding amount is reduced in proportion, and the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state;
c. if the amount of the overflow material B 0 Keeping the stock compartment B unchanged or increasing x The cold material bins A adjacent to the corresponding cold material bins Ax x-1 Or cold storage A x+1 The feeding amount is reduced, the other cold material bins are increased in proportion, the conveying amount of the hot aggregate hoister is ensured to be unchanged, and the overflowing amount B is observed 0 Change after time t if B 0 Decrease until the material storage grid B x When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased x And a cold material bin A x-1 Or adding a cold storage bin A x And a cold material bin A x+1 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state; if B is present 0 Adding and cooling a material bin A x-1 Or cold storage A x+1 Continuously reducing and observing the overflow quantity B 0 Change after time t if B 0 Or unchanged, reducing the cold storage bin A x-1 Or cold storage A x+1 Up to B 0 Decrease, finally in the storage cell B x When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased x And a cold material bin A x-1 And A x+1 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state.
When x =1 in step (1), namely, the storage grid B x B1, the flash amount B is determined in step (2) c 0 Keeping the stock compartment B unchanged or increasing 1 The corresponding cold storage bin A 1 Adjacent cold material storehouse A 2 The feeding amount is reduced, the other cold material bins are increased in proportion, the conveying amount of the hot aggregate hoister is ensured to be unchanged, and the overflowing amount B is observed 0 Change after time t, B 0 Decrease until the material storage grid B 1 When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased 1 And a cold material bin A 2 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state.
When x = n in step (1), namely, the storage grid B x Is B n Then, in step (2) c, the flash amount B 0 Keeping the stock compartment B unchanged or increasing n The corresponding cold storage bin A n Adjacent cold material storehouse A n-1 The feeding amount is reduced, the other cold material bins are increased in proportion, the conveying amount of the hot aggregate hoister is ensured to be unchanged, and the overflowing amount B is observed 0 Change after time t, B 0 Decrease until the material storage grid B n When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased n And a cold material bin A n-1 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state.
Further, the time t is preferably 3 minutes.
From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
1. according to the automatic overflow adjusting system, the overflow pipe is correspondingly arranged on the upper part of each storage grid of the hot aggregate bin, and each overflow pipe is connected to the feeding end of the hot aggregate elevator through an overflow belt scale. When a certain storage grid has overflow, the overflow amount is automatically metered by the overflow belt scale and is transmitted to the PLC control system in real time, the PLC control system correspondingly adjusts the feeding amount of each cold storage bin according to the change of the overflow amount, and finally, the aggregate storage amount in each storage grid of the cold storage bin and the hot storage bin is kept in a relatively balanced state.
2. According to the method for adjusting the flash of the asphalt mixing station, the principle that part of aggregate of different specifications of cold material bins falls into the storage grids of adjacent specifications after secondary screening is utilized, during adjustment, the cold material bin corresponding to the storage grid of the flash stops feeding, and according to the change condition of the flash, when the flash is observed to be kept unchanged or increased after t time, one cold material bin adjacent to the cold material bin corresponding to the storage grid is adjusted, so that the charge is reduced; and if the overflow amount is still unchanged or increased, the material loading of another adjacent cold bin is continuously reduced until the overflow amount is reduced. Finally, the aggregate storage capacity in each storage grid of the cold storage bin and the hot storage bin can be kept in a relative balance state. Therefore, the method for adjusting the flash of the asphalt mixing station does not need to stop the machine, so that the asphalt mixing station keeps continuous production, and the quality stability of the asphalt mixture is ensured.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the structure of the hot-material bin, the flash pipe and the flash belt scale of the present invention.
FIG. 3 is a flow chart of the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth below to provide a thorough understanding of the present invention, but it will be apparent to those skilled in the art that the present invention may be practiced without these details. Well-known components, methods and processes are not described in detail below.
An automatic flash adjustment system for an asphalt mixing station, referring to fig. 1, comprises a cold charge feeding system 10, a drying system 20, a hot aggregate elevator 30, a vibrating screen 40, a hot charge bin 50, a PLC control system 60, a flash pipe 70 and a flash belt scale 80. The cold material feeding system 10 includes a plurality of cold material bins 11 and a belt conveyor 12, wherein each cold material bin 11 stores aggregates of one specification, and the aggregates are arranged at equal intervals in order according to a grading sequence. A cold aggregate belt weigher 13 is correspondingly arranged below a discharge door at the bottom of each cold storage bin 11, a belt conveyor 12 is arranged below the cold aggregate belt weigher 13, and aggregates in the cold storage bins are metered by the cold aggregate belt weigher 13 according to the proportion set by the system and then fed onto the belt conveyor 12.
Referring to fig. 1, a drying system 20 mainly includes a drying drum 21 and a burner, and the drying system is a device commonly used in the art and will not be described in detail herein. The discharge end of the belt conveyor 12 is connected to the feed end of the drying drum 21, and the discharge end of the drying drum 21 is connected to the vibrating screen 40 through the hot aggregate elevator 30.
Referring to fig. 1, the vibrating screen 40 includes a plurality of screening discharge ports corresponding to the cold bin, and the screening discharge ports are sequentially arranged. The lower part of this shale shaker 40 is equipped with hot aggregate bin 50, and this hot aggregate bin 50 internal partitioning is a plurality of storage check 51, and every storage check 51 corresponds the below of locating the screening discharge gate respectively. The specifications of the hot aggregates stored in the storage grids 51 correspond to the specifications of the aggregates stored in the cold storage bins 11 one by one. For example: the serial numbers of a plurality of storage grids are sequentially B 1 、B 2 ……B n And the number of the cold storage bin is corresponding to A 1 、A 2 ……A n Storage grid B 1 With cold feed bin A 1 The material specifications are the same. In the same way, storage grid B n And a cold material bin A n The material specifications are the same.
Referring to fig. 1 and 2, an overflow pipe 70 is connected to the upper side of each storage grid 51, one overflow belt scale 80 is correspondingly arranged at the bottom of each overflow pipe 70, and the discharge end of each overflow belt scale 80 is connected to the feed end of the hot aggregate elevator 30. The upper part of the inner wall of each storage grid 51 is provided with a high material level detection switch respectively to prompt operators that the hot material bin has flash.
Referring to fig. 1, each of the flash belt weighers 80 is electrically connected to the PLC control system 60, and the PLC control system 60 is further connected to the cold aggregate belt weigher 13 and the belt conveyor 12, respectively. When a material storage grid 51 has a flash, the flash amount is automatically measured by the flash belt weigher 80 and transmitted to the PLC control system in real time, and the PLC control system 60 adjusts the loading amount of each cold storage bin 11 accordingly according to the change of the flash amount.
Referring to fig. 1, in order to reduce the heat loss of the hot aggregate, the discharge end of the drying drum 21 is connected to the hot aggregate elevator 30 through a chute pipe 211, and the discharge end of the overflow belt weigher 80 is connected to the chute pipe 211 through a material return pipe 81.
The automatic flash adjustment system for the asphalt mixing station is characterized in that a hot material bin is provided with n material storage grids, and the xth material storage grid is B x N cold storage bins and the x-th cold storage bin is A x N is a natural number greater than 1, and x is a natural number not less than 1.
The invention discloses an automatic adjusting method of an automatic adjusting system for asphalt mixing station flash, which comprises the following specific steps:
(1) If storage grid B in hot material bin x When the hot aggregate overflows, the overflowing hot aggregate enters the overflow belt weigher through the corresponding overflow pipe, and the overflow belt weigher senses the overflow amount B 0 And transmits the data to a PLC control system in real time;
(2) The PLC control system is based on the overflow amount B 0 The change of (3) is to correspondingly adjust the feeding amount of each cold storage bin, and the adjustment mode is as follows:
a. firstly adjusting the storage grid B x Corresponding cold material storehouse A x Reducing the material loading to 0, and observing the overflow B 0 A change in (c).
b. If the amount of the overflow material B 0 Decreasing, then removing the cooling bin A in step a x The rest cold material bins are increased in proportion to ensure that the conveying capacity of the hot aggregate hoister is unchanged until the material storage grid B x When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased x And the feeding amount is reduced in proportion to the feeding amount of the rest cold storage bins, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state.
c. If the amount of the overflow material B 0 Keeping the stock compartment B unchanged or increasing x The corresponding cold storage bin A x Adjacent cold material storehouse A x-1 (or Cold storage silo A) x+1 ) The feeding amount is reduced, the other cold material bins are increased in proportion, the conveying amount of the hot aggregate hoister is ensured to be unchanged, and the overflowing amount B is observed 0 Change after time t if B 0 Decrease until the material storage grid B x When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased x And a cold material bin A x-1 (or Cold storage silo A) x+1 ) The feeding amount of the rest cold storage bin is reduced in proportionFinally, keeping the storage capacity of various aggregates in the cold storage bins and the storage grids in a relative balance state; if B is present 0 Adding and cooling a material bin A x-1 (or Cold storage silo A) x+1 ) Continuously reducing and observing the overflow quantity B 0 Change after time t if B 0 Or unchanged, reducing the cold storage bin A x+1 (or Cold storage silo A) x-1 ) Up to B 0 Decrease, finally in the storage cell B x When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased x And a cold material bin A x-1 And A x+1 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state.
In the step (2), x is more than 1 and less than n.
When x =1 in step (1), namely, the stock bin B x Is B 1 Then, in step (2) c, the flash amount B 0 Keeping the stock bin B unchanged or increasing 1 The corresponding cold storage bin A 1 Adjacent cold material storehouse A 2 The feeding amount is reduced, the other cold material bins are increased in proportion, the conveying amount of the hot aggregate hoister is ensured to be unchanged, and the overflowing amount B is observed 0 Change after time t, B 0 Decrease until the storage grid B 1 When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased 1 And a cold material bin A 2 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state.
When x = n in step (1), namely, the storage grid B x Is B n Then, in step (2) c, the flash amount B 0 Keeping the stock bin B unchanged or increasing n The corresponding cold storage bin A n Adjacent cold material storehouse A n-1 The feeding amount is reduced, the other cold material bins are increased in proportion, the conveying amount of the hot aggregate hoister is ensured to be unchanged, and the overflowing amount B is observed 0 Change after time t, B 0 Decrease until the material storage grid B n When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold is slowly increasedStock bin A n And a cold material bin A n-1 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state.
The above-mentioned time t is preferably 3 minutes.
The following concrete reference numerals A in the sequence of six cold storage bins 1 To A 6 (ii) a Six storage grids are arranged in the hot material bin and are numbered as B in sequence 1 To B 6 . Referring to FIG. 3, assume stocker cell B 2 The invention relates to an automatic adjusting method of an automatic adjusting system for asphalt mixing station flash, which comprises the following steps:
(1) Material storage grid B 2 The high material level detection switch alarms and adjusts the cold storage bin A 2 After reducing the material loading to 0,3 minutes, the overflow amount B is observed 0 A change in (c).
(2) If the amount of the overflow material B 0 Reducing, then cooling storage bin A 1 、A 3 、A 4 、A 5 、A 6 The conveying amount of the hot aggregate hoister is ensured to be unchanged until the storage grid B is increased in proportion 2 When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased 2 And the feeding amount is reduced in proportion to the feeding amount of the rest cold storage bins, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state.
(3) If the amount of the overflow material B 0 When the temperature is not changed or increased, the cooling bin A is enabled 1 Reduced feed amount, A 3 、A 4 、A 5 、A 6 The proportion is increased, and the conveying capacity of the hot aggregate elevator is ensured to be unchanged. After 3 minutes, the overflow amount B was observed 0 If B is changed 0 Decrease until the material storage grid B 2 When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased 2 And a cold material bin A 1 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state; if B is present 0 Adding and cooling a material bin A 1 Continuously reducing and observing the overflow quantity B 0 Change after 3 minutes if B 0 Or unchanged, reducing the cold storage bin A 3 Up to B 0 Decrease, finally in the storage cell B 2 When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased 2 And a cold material bin A 1 And a cold material bin A 3 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (8)
1. The utility model provides an asphalt mixing station flash automatic adjustment system, includes cold charge feeding system, drying system, hot aggregate lifting machine, shale shaker and hot feed bin, cold charge feeding system includes a plurality of cold feed bin and a band conveyer, and the blowing door below correspondence of every cold feed bin bottom is equipped with a cold aggregate belt weigher, by cold aggregate belt weigher feed extremely band conveyer, band conveyer's discharge end is connected to drying system's feed end, drying system's discharge end passes through hot aggregate lifting machine is connected to the shale shaker, the shale shaker include a plurality of with the corresponding screening discharge gate in cold feed bin, its characterized in that: still include PLC control system, flash pipe and flash belt weigher, the hot feed bin include a plurality of with the corresponding storage check of screening discharge gate, the upper portion side of every storage check is connected one the flash pipe, every flash pipe bottom corresponds and is equipped with one the flash belt weigher, the discharge end of every flash belt weigher are connected to the feed end of hot aggregate lifting machine, every the flash belt weigher respectively with PLC control system electrical connection, PLC control system still respectively with cold aggregate belt weigher and band conveyer connects.
2. The system of claim 1 for automatically adjusting asphalt mixing station flash, comprising: every the upper portion of storage check inner wall is equipped with a high material level detection switch respectively.
3. The system of claim 1 for automatically adjusting asphalt mixing station flash, comprising: the drying system comprises a drying roller, the discharge end of the drying roller is connected with the hot aggregate elevator through a chute pipe, and the discharge end of the flash belt scale is connected with the chute pipe through a material return pipe.
4. The system of claim 1 for automatically adjusting asphalt mixing station flash, comprising: the cold feed bin is six, the shale shaker correspondence is equipped with six screening discharge gates, the storage check correspond to be six.
5. An automatic asphalt mixing station flash adjustment method comprising the automatic asphalt mixing station flash adjustment system of claim 1, characterized by comprising the following specific steps:
(1) If storage grid B in hot material bin x During material overflow, the hot material bin has n material storing lattices and the xth material storing lattice is B x N cold storage bins and the x-th cold storage bin is A x N is a natural number greater than 1, and x is a natural number not less than 1; the overflowed hot aggregate enters the overflow belt weigher through the corresponding overflow pipe, and the overflow belt weigher senses to obtain the overflow amount B 0 And transmits the data to a PLC control system in real time;
(2) When x is more than 1 and less than n, the PLC control system controls the overflow amount B 0 The feeding amount of each cold material bin is correspondingly adjusted by the change of the cold material bins, and the adjustment mode is as follows:
a. firstly, the cold material bin A corresponding to the material storage grid is adjusted x Reducing the material loading to 0, and observing the overflow B 0 A change in (c);
b. if the amount of the overflow material B 0 Reducing, namely removing the cold material bin A with the material loading of 0 in the step a x The rest cold material bins are increased in proportion to ensure that the conveying capacity of the hot aggregate hoister is unchanged until the material storage grid B x When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the internal heat aggregate is addedSlowly increasing cold storage bin A x The feeding amount is reduced in proportion, and the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state;
c. if the amount of the overflow material B 0 Keeping the stock compartment B unchanged or increasing x The corresponding cold storage bin A x Adjacent cold material storehouse A x-1 Or cold storage A x+1 The feeding amount is reduced, the other cold material bins are increased in proportion, the conveying amount of the hot aggregate hoister is ensured to be unchanged, and the overflowing amount B is observed 0 Change after time t if B 0 Decrease until the material storage grid B x When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased x And a cold material bin A x-1 Or adding a cold storage bin A x And a cold material bin A x+1 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state; if B is present 0 Adding and cooling a material bin A x-1 Or cold storage A x+1 Continuously reducing and observing the overflow quantity B 0 Change after time t if B 0 Or unchanged, reducing the cold storage bin A x+1 Or cold storage A x-1 Up to B 0 Decrease, finally in the storage cell B x When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased x Cold material storehouse A x-1 And A x+1 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state.
6. The automatic asphalt mixing station flash adjustment method according to claim 5, characterized by comprising the following steps: when the material storage grid B in the step (1) x Is B 1 Then, in step (2) c, the flash amount B 0 Keeping the stock compartment B unchanged or increasing 1 The corresponding cold storage bin A 1 Adjacent cold material storehouse A 2 The feeding amount is reduced, the other cold material bins are increased in proportion, the conveying amount of the hot aggregate hoister is ensured to be unchanged, and the overflowing amount B is observed 0 Change after time t, B 0 Decrease until the material storage grid B 1 When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased 1 And a cold material bin A 2 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state.
7. The method for automatically adjusting the flash of an asphalt mixing station according to claim 5, wherein the method comprises the following steps: when the material storage grid B in the step (1) x Is B n Then, in step (2) c, the flash amount B 0 Keeping the stock compartment B unchanged or increasing n The corresponding cold storage bin A n Adjacent cold material storehouse A n-1 The feeding amount is reduced, the other cold material bins are increased in proportion, the conveying amount of the hot aggregate hoister is ensured to be unchanged, and the overflowing amount B is observed 0 Change after time t, B 0 Decrease until the material storage grid B n When the storage capacity of the internal heat aggregate is reduced to 2/3 of the total amount, the cold material bin A is slowly increased n And a cold material bin A n-1 The loading amount of the cold storage bins is reduced in proportion, and finally the storage amounts of various aggregates in the cold storage bins and the storage grids are kept in a relatively balanced state.
8. An automatic asphalt mixing station flash adjustment method according to any one of claims 5 to 7, characterized in that: the t time was 3 minutes.
Priority Applications (1)
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