CN116289404A - Flow calibration method for asphalt cold material feed opening - Google Patents
Flow calibration method for asphalt cold material feed opening Download PDFInfo
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- CN116289404A CN116289404A CN202310291518.4A CN202310291518A CN116289404A CN 116289404 A CN116289404 A CN 116289404A CN 202310291518 A CN202310291518 A CN 202310291518A CN 116289404 A CN116289404 A CN 116289404A
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- bin
- blanking
- speed
- flow
- asphalt
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- 239000000463 material Substances 0.000 title claims abstract description 83
- 239000010426 asphalt Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 19
- 239000011707 mineral Substances 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims description 20
- 238000001595 flow curve Methods 0.000 claims description 16
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012417 linear regression Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
Abstract
The invention relates to a flow calibration method for an asphalt cold material feed opening, which comprises the step of calculating the feeding speed of each grade of mineral aggregate according to the set asphalt station productivity and target mixing ratio. The maximum flow of the blanking of each bin is set, and the motor rotating speed can be controlled to be about 50% of the maximum rotating speed during normal blanking according to 1.5-2.0 times of the normal flow. Setting the rotating speed of the belt as 20%, 50% and 80% of the maximum rotating speed respectively, blanking for a certain time, directly reading the sum of the weight of the mineral aggregate in each hot bin after the mineral aggregate is completely transferred to the hot bin, namely, blanking amount of the mineral aggregate in the time at the rotating speed, and calculating blanking speed in unit time; the invention aims to solve the technical problem that the blanking speed and the mixing ratio of each bin cannot be matched in the prior art.
Description
Technical Field
The invention relates to the field of pavement mixtures, in particular to a flow calibration method for an asphalt cold material feed opening.
Background
The feeding of asphalt cold materials produced by asphalt mixture adopts continuous feeding of a belt, and the batching mixing of hot materials is intermittent, so that the feeding of asphalt cold materials and the mixing of hot materials are matched and consistent in each speed, whether overflow and equal materials are caused or not can occur, the overflow is that a certain blocking material is added too fast, the hot material bin overflows after being full, the equal materials are that a certain blocking material is added too slow, and when the blocking material is insufficient in storage of a disc material, the mixing system automatically stops for feeding.
The feeding speed of the asphalt cold materials of each asphalt station is controlled by the height of the material seal and the rotating speed of the belt. The larger the gap between the discharging opening of the asphalt cooling bin and the belt is, the higher the rotating speed of the belt is, and the faster the feeding speed is; when the gap is too small, the blanking speed is too slow, and the productivity of the mixing station cannot be normally exerted; in order to prevent the phenomena of material overflow and the like, the loading speed among the bins of the asphalt cold material is required to strictly meet the requirement of production mixing ratio, so that the flow curve of each bin is required to be adjusted and calibrated, the loading speed of each asphalt cold material bin can be quickly adjusted under the condition that the grading of the asphalt cold material is unstable, and the blanking speed of each bin is ensured to be matched with the mixing ratio.
Therefore, developing an asphalt cold material discharging opening adjustment and feeding curve calibration method capable of ensuring that the discharging speed and the mixing ratio of each bin are matched is a problem to be solved urgently.
Disclosure of Invention
The invention provides a flow calibration method for an asphalt cold material discharging opening, which comprises an asphalt cold material bin, wherein the asphalt cold material bin discharging opening is arranged at the bottom of the asphalt cold material bin, a top plate is arranged between the asphalt cold material bin discharging opening and the asphalt cold material bin, and a conveyor belt is arranged below the asphalt cold material bin discharging opening, and comprises the following steps:
(1) according to the set asphalt station productivity and the target mix ratio, calculating the feeding speed of each block of mineral aggregate;
(2) setting the maximum discharging flow of each bin, and controlling the motor rotation speed to be 50% of the maximum rotation speed during normal discharging according to 1.5-2.0 times of the normal flow;
(3) after the materials in the drying cylinder and the hot material bin are emptied, the rotating speed of the motor is regulated to the maximum value, the asphalt cold material bin is started, continuous and stable blanking is carried out in a set time of 10min, after the materials are fully processed in the hot material bin, the weight of all mineral materials in the hot material bin is read, and the blanking speed of the blocking material in unit time is calculated; if the value is not in the range of 1.5-2.0 times of the normal construction flow, the height of the asphalt cold material bin material seal is required to be adjusted until the flow requirement is met;
(4) the height of the asphalt cold material bin material seal is adjusted through the height of the front inserting plate and the rear inserting plate of the blanking opening of the asphalt cold material bin;
(5) the rotating speed of the belt is respectively set to be 20%, 50% and 80% of the maximum rotating speed, the feeding is carried out for a certain time, the sum of the weight of the mineral materials in each hot bin is directly read after the mineral materials are completely transferred to the hot bin, namely the feeding amount of the mineral materials in the time at the rotating speed is obtained, and the feeding speed in unit time is calculated, wherein the formula is as follows:
y＝930x-182
wherein: y is the rotation speed, x is the weight;
wherein, the goodness of fit R 2 ＝0.9995；
(6) And the opening of the feed opening is adjusted, so that the accurate measurement of aggregate with small mixing amount is ensured.
Further, the step (5) further includes:
linearly regressing the blanking speed and the motor rotating speed to obtain a linear relation between the blanking speed of the blocking material and the motor rotating speed, and drawing a flow curve; and drawing flow curves of the asphalt cold material bins in sequence, submitting the flow curves to an asphalt station control room for reference during feeding adjustment of asphalt cold materials, and reading the motor rotation speed under normal construction blanking speed from the flow curves.
After the technical scheme is adopted, the invention has the beneficial effects that:
1. after the technical scheme is adopted, the phenomena of material overflow and the like can be effectively prevented, the feeding speed of each asphalt cold material bin can be quickly adjusted under the condition of unstable asphalt cold material grading, and the discharging speed of each bin is ensured to be matched with the mixing proportion.
2. The linear regression flow curve of the blanking speed and the motor speed is utilized to obtain the motor speed under the normal construction blanking speed conveniently.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a front view of an adjustable plugboard of a blanking port of an asphalt cold material bin according to an embodiment of the present application.
Fig. 2 is a left side view of an adjustable plugboard of an asphalt cold material bin blanking port of an asphalt cold material blanking port flow calibration method according to an embodiment of the present application.
Fig. 3 is a graph of a discharging flow curve of a bin in the method for calibrating a flow of a discharging opening of an asphalt cold material according to an embodiment of the present application.
Reference numerals illustrate:
101-asphalt cold storage bin, 102-asphalt cold storage bin blanking port, 103-picture peg, 104-conveyer belt.
Detailed Description
The present invention will be further understood by the following description of embodiments, but the specific embodiments given by the applicant should not be considered as limiting the technical solution of the present invention, and any modification of the definition of components or technical features, or the form of the whole structure without substantial change should be considered as the protection scope defined by the technical solution of the present invention.
In this application, the terms "mounted," "connected," "secured," and the like are to be construed broadly unless otherwise specifically indicated or defined. For example, the connection can be fixed connection, detachable connection or integral connection; can be mechanically or electrically connected; the connection may be direct, indirect, or internal, or may be surface contact only, or may be surface contact via an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The invention is realized by adopting the following technical scheme: the method comprises the steps that an asphalt cooling bin 101 is included, an asphalt cooling bin discharging opening 102 is formed in the bottom of the asphalt cooling bin 101, an inserting plate 103 is arranged between the asphalt cooling bin discharging opening 102 and the asphalt cooling bin 101, a conveyor belt 104 is arranged below the asphalt cooling bin discharging opening 102, and the flow calibration method flow of the asphalt cooling bin discharging opening is as follows:
(1) and calculating the feeding speed of each mineral aggregate according to the set asphalt station productivity and the target mixing ratio.
(2) The maximum flow of the blanking of each bin is set, and the motor rotating speed can be controlled to be about 50% of the maximum rotating speed during normal blanking according to 1.5-2.0 times of the normal flow.
(3) After the materials in the drying cylinder and the hot material bin are emptied, the rotating speed of the motor is regulated to the maximum value, the asphalt cold material bin 101 is started, continuous and stable blanking is carried out in a set time (10 min is generally taken), and after the materials are fully subjected to the hot material bin, the weight of all mineral materials in the hot material bin is read, and the blanking speed of the blocking material in unit time is calculated. If the value is not in the range of 1.5-2.0 times of the normal construction flow, the height of the asphalt cold storage bin 101 is required to be adjusted until the flow requirement is met.
(4) The height of the asphalt cold storage bin 101 is adjusted by the height of the front inserting plate 103 and the rear inserting plate 103 of the blanking opening 102 of the asphalt cold storage bin. The board 103 is arranged as shown in fig. 1 and 2.
(5) The rotating speed of the belt is respectively set to be 20%, 50% and 80% of the maximum rotating speed, the feeding is carried out for a certain time, the sum of the weight of the mineral aggregate in each hot bin is directly read after the mineral aggregate is completely transferred to the hot bin, the feeding amount of the mineral aggregate in the time at the rotating speed is obtained, and the feeding speed in unit time is calculated. And linearly regressing the blanking speed and the motor rotating speed to obtain a linear relation between the blanking speed of the blocking material and the motor rotating speed, and drawing a flow curve. And drawing flow curves of the asphalt cold material bins in sequence, submitting the flow curves to an asphalt station control room for reference during feeding adjustment of asphalt cold materials, and reading the motor rotation speed under the normal construction blanking speed from the flow curves. Table 1 and fig. 3 are calibration measured data, flow equation and flow curve of a certain material in the implementation project, and the formula is:
y＝930x-182
wherein: y is the rotation speed, x is the weight;
wherein, the goodness of fit R 2 ＝0.9995；
TABLE 1 actual measurement of Belt speed and feeding weight of certain bin
(6) Adjustment of discharging opening of hot stock bin
The hot bin is directly weighted according to the weight, the flow calibration is not needed, but the opening of the feed opening is adjusted, and the accurate measurement of aggregate with small mixing amount is ensured. If the opening is larger, the blanking exceeds standard when the bin gate is opened, and the bin gate needs to be adjusted at the moment, so that the blanking accuracy is ensured.
Those skilled in the art will understand that the skilled person can implement the modification in combination with the prior art and the above embodiments, and this will not be repeated here. Such modifications do not affect the essence of the present invention, and are not described herein.
The preferred embodiments of the present invention have been described above. It is to be understood that the invention is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention or modifications to equivalent embodiments without departing from the scope of the technical solution of the present invention, using the methods and technical contents disclosed above, without affecting the essential content of the present invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (2)
1. The utility model provides a pitch cold charge feed opening flow calibration method, includes pitch cold feed bin, pitch cold feed bin feed opening sets up in pitch cold feed bin bottom, is provided with the roof between pitch cold feed bin feed opening and the pitch cold feed bin, and the below of pitch cold feed bin feed opening sets up the conveyer belt, its characterized in that: the method comprises the following steps:
(1) according to the set asphalt station productivity and the target mix ratio, calculating the feeding speed of each block of mineral aggregate;
(2) setting the maximum discharging flow of each bin, and controlling the motor rotation speed to be 50% of the maximum rotation speed during normal discharging according to 1.5-2.0 times of the normal flow;
(3) after the materials in the drying cylinder and the hot material bin are emptied, the rotating speed of the motor is regulated to the maximum value, the asphalt cold material bin is started, continuous and stable blanking is carried out in a set time of 10min, after the materials are fully processed in the hot material bin, the weight of all mineral materials in the hot material bin is read, and the blanking speed of the blocking material in unit time is calculated; if the value is not in the range of 1.5-2.0 times of the normal construction flow, the height of the asphalt cold material bin material seal is required to be adjusted until the flow requirement is met;
(4) the height of the asphalt cold material bin material seal is adjusted through the height of the front inserting plate and the rear inserting plate of the blanking opening of the asphalt cold material bin;
(5) setting the rotating speed of the belt as 20%, 50% and 80% of the maximum rotating speed respectively, blanking for a certain time, directly reading the sum of the weight of the mineral aggregate in each hot bin after the mineral aggregate is completely transferred to the hot bin, namely, blanking amount of the mineral aggregate in the time at the rotating speed, and calculating blanking speed in unit time;
(6) and the opening of the feed opening is adjusted, so that the accurate measurement of aggregate with small mixing amount is ensured.
2. The method for calibrating the flow rate of the asphalt cold feed discharging port according to claim 1, wherein the step (5) further comprises:
linearly regressing the blanking speed and the motor rotating speed to obtain a linear relation between the blanking speed of the blocking material and the motor rotating speed, and drawing a flow curve; drawing flow curves of asphalt cold material bins in sequence, submitting the flow curves to an asphalt station control room for reference during feeding adjustment of asphalt cold materials, and reading motor rotation speed under normal construction blanking speed from the flow curves, wherein the formula is as follows:
y＝930x-182
wherein: y is the rotation speed, x is the weight;
wherein, the goodness of fit R 2 ＝0.9995。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310291518.4A CN116289404A (en) | 2023-03-23 | 2023-03-23 | Flow calibration method for asphalt cold material feed opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310291518.4A CN116289404A (en) | 2023-03-23 | 2023-03-23 | Flow calibration method for asphalt cold material feed opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116289404A true CN116289404A (en) | 2023-06-23 |
Family
ID=86802970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310291518.4A Pending CN116289404A (en) | 2023-03-23 | 2023-03-23 | Flow calibration method for asphalt cold material feed opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116289404A (en) |
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2023
- 2023-03-23 CN CN202310291518.4A patent/CN116289404A/en active Pending
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