CN209215171U - A kind of dust suppressant wind resistance test macro - Google Patents
A kind of dust suppressant wind resistance test macro Download PDFInfo
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- CN209215171U CN209215171U CN201821813486.0U CN201821813486U CN209215171U CN 209215171 U CN209215171 U CN 209215171U CN 201821813486 U CN201821813486 U CN 201821813486U CN 209215171 U CN209215171 U CN 209215171U
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Abstract
A kind of dust suppressant wind resistance test macro, including test chamber, electrodeless frequency conversion fan, air velocity transducer, dust sample holding vessel, plate electric heater, dust concentration detector, HEPA strainer and dust suppressant spraying mechanism；Electrodeless frequency conversion fan, air velocity transducer, plate electric heater, dust concentration detector and HEPA strainer arrange that dust sample holding vessel is placed on above plate electric heater along test chamber axial direction sequence, and dust suppressant spraying mechanism is located at the top of test chamber.Test method are as follows: addition dust sample and dust suppressant, starting blower simultaneously measures dust concentration when not spraying dust suppressant, sprinkling dust suppressant simultaneously measures sprinkling quality, it dries and measures dust sample mass, starting blower simultaneously measures the dust concentration after sprinkling dust suppressant, and unit of account quality dust suppressant average wind loss rate and unit mass dust suppressant are averaged dust suppression rate, retest process, the critical effective mass of dust suppressant is obtained, using above three parameter as dust suppressant wind resistance evaluation index.
Description
Technical field
The utility model belongs to dust suppressant technical field of performance test, tests more particularly to a kind of dust suppressant wind resistance
System.
Background technique
In fields such as highway transportation, construction, opencast minings, it will usually face serious fugitive dust problem, and fugitive dust
Serious environmental pollution is not only resulted in, can also be caused damages to the health of Field Force, it is therefore necessary to fugitive dust area
Domain carries out dust-proof depositing dust processing, and by spraying one of the major measure that dust suppressant is dust-proof depositing dust, and dust suppressant is anti-
Wind performance is also one of the important content of dust suppressant Performance Evaluation.
Currently, perfect not enough for assessing the means of testing of dust suppressant wind resistance both at home and abroad, however it remains test weight
Renaturation is poor, test accuracy is low, the unscientific problem of evaluation index.
For example, disclosing a kind of dust suppressant performance evaluation dress application No. is 201420789965.9 Chinese patent application
It sets, by the coal sample quality of the dust suppressant of the sprinkling before measurement blowing and after blowing, and is commented by the variation of coal sample quality
The wind resistance of dust suppressant is estimated, still, due to the case where there are dust suppressant volatilization and losses during blowing, above scheme
In the coal sample mass change data that measure will be present obvious errors, while the device be also unable to accurately control dust suppressant sprinkling it is dynamic
Make, therefore also results in the defect of test repeatability difference.
Further more, application No. is 201710115929.2 Chinese patent application, a kind of dust suppressant, dust-proofing agent dedusting are disclosed
Measure of merit device and test method need to prepare immersion before testing to detect the dust-proof effect after dust suppressant sprinkling
The dust of dust suppression agent solution is not impregnated, but dust suppressant can only be distributed to the table of powder using spray pattern in practical applications
The case where layer is not in immersion, and entire test process is also more complicated, and test repeatability is not equally high.
In addition, disclosing a kind of inorganization dust dust suppressant application No. is 201510483050.4 Chinese patent application
The test device and method of dust suppression rate, by double fluid atomization nozzle spray into dust suppressant, and with device top material whereabouts mouth
The material of entrance is mixed, and still, there is no consider whether dust suppressant sprays uniform problem, dust suppressant spray in above scheme
The amount of spilling also is unable to accurately control, and therefore, dust suppressant fountain height unevenly will necessarily generate adverse effect to test result.
Utility model content
In view of the problems of the existing technology, the utility model provides a kind of dust suppressant wind resistance test macro, can
Test repeatability and test accuracy are effectively promoted, keeps evaluation index more scientific.
To achieve the goals above, the utility model adopts the following technical solution: a kind of dust suppressant wind resistance test system
System, including test chamber, electrodeless frequency conversion fan, air velocity transducer, dust sample holding vessel, plate electric heater, dust concentration
Detector, HEPA strainer and dust suppressant spraying mechanism；The test chamber uses tubular construction, and test chamber is horizontal positioned, the nothing
Pole frequency conversion fan, air velocity transducer, dust sample holding vessel, plate electric heater, dust concentration detector and HEPA strainer
It is respectively positioned on inside test chamber, and electrodeless frequency conversion fan, air velocity transducer, plate electric heater, dust concentration detector and HEPA
Strainer is arranged along test chamber axial direction sequence；The HEPA strainer all blocks the nozzle of test chamber；The dust examination
Sample holding vessel is placed on above plate electric heater, and dust sample holding vessel uses cuboid vessel；The dust suppressant
Spraying mechanism is located at the top of test chamber.
The first elevating lever, the second elevating lever, third elevating lever and the 4th lifting are respectively arranged with inside the test chamber
Bar；The electrodeless frequency conversion fan is mounted on the first elevating lever top, passes through between electrodeless frequency conversion fan and the first elevating lever top
Articulated joint is connected, and electrodeless frequency conversion fan has pitch angle regulating power by articulated joint；The air velocity transducer installation
On the second elevating lever top；The dust sample holding vessel and plate electric heater are mounted on third elevating lever top；It is described
Dust concentration detector is mounted on the 4th elevating lever top.
The dust suppressant spraying mechanism include dust suppressant storage tank, kinetic pump, feed liquid hose, uniformly distributed flat fan spray head, solenoid valve,
Screw sliding block, screw rod, guide rail and stepper motor；The guide rail and stepper motor are packed in test chamber inner top, guide rail
It is parallel with test chamber central axes；The motor shaft of described screw rod one end and stepper motor is fixedly connected with, and the screw rod other end passes through bearing
Seat is connected with test chamber inner top, and screw rod is parallel with guide rail；The screw sliding block is connected between screw rod and guide rail, screw
Sliding block has linear movement freedom degree relative to screw rod and guide rail；The solenoid valve is packed on screw sliding block, described uniformly distributed flat
Fan spray head is mounted on the liquid outlet of solenoid valve, and uniformly distributed flat fan spray head is located above dust sample holding vessel；The dust suppressant storage
Tank and kinetic pump are respectively positioned on test chamber out of my cabin, are connected between dust suppressant storage tank and power Pump Suction Nozzle by imbibition pipeline, power
Pump discharge passes sequentially through Drainage pipe and feed liquid hose and is connected with the inlet of solenoid valve, opens on the test chamber bulkhead
Equipped with Drainage pipe mounting hole；Electromagnetic flowmeter is installed on the Drainage pipe.
A kind of dust suppressant wind resistance test method, using the dust suppressant wind resistance test macro, including such as
Lower step:
Step 1: quantitatively adding the dust sample of test in Xiang Fenchen sample holding vessel, while to dust suppressant storage tank
Middle injection dust suppressant to be detected；
Step 2: electrodeless frequency conversion fan, air velocity transducer, dust sample holding vessel and dust concentration detector are adjusted
Height and position is in air velocity transducer, dust sample holding vessel and dust concentration detector in distinguished and admirable range, adjusts simultaneously
The pitch angle of whole electrodeless frequency conversion fan makes dust in the wind direction and dust sample holding vessel of electrodeless frequency conversion fan output
Sample upper surface is parallel or has angle；
Step 3: starting electrodeless frequency conversion fan, by the distinguished and admirable wind speed of air velocity transducer real-time detection, until wind speed is stablized
Afterwards, dust concentration value at this time is recorded by dust concentration detector, is then shut off electrodeless frequency conversion fan；
Step 4: starting kinetic pump, opens solenoid valve, the dust suppressant in dust suppressant storage tank successively pass through imbibition pipeline, dynamic
Power pump, Drainage pipe, feed liquid hose and solenoid valve enter in uniformly distributed flat fan spray head, and by uniformly putting down fan spray head that dust suppressant is equal
Even is sprayed onto dust sample upper surface, and dust suppressant sprinkling section is uniform smear shape；Start stepper motor simultaneously, makes uniformly distributed
Flat fan spray head is moved to the other end by screw rod one end, closes solenoid valve later, dust suppressant completes a sprinkling period, then passes through electricity
The numerical value shown on magnetic flowmeter can be obtained the sprinkling quality of dust suppressant；
Step 5: starting plate electric heater, to the dust sample heating, drying in dust sample holding vessel, then to baking
Dust sample after dry is weighed, and records the quality of dust sample；
Step 6: restarting electrodeless frequency conversion fan, by the distinguished and admirable wind speed of air velocity transducer real-time detection, until wind speed
After stabilization, dust concentration value at this time is recorded by dust concentration detector, is then shut off electrodeless frequency conversion fan；
Step 7: pass through formula Q=(m1-m2)/(m1×m3) calculate unit mass dust suppressant average wind loss rate, in formula,
Q is unit quality dust suppressant average wind loss rate, m1For sprinkling dust suppressant after and complete drying and blower starting before dust sample
Quality, m2For sprinkling dust suppressant after and complete drying and blower close after dust sample mass, m3For the sprinkling matter of dust suppressant
Amount；Meanwhile passing through formula R=(ρ0-ρx)/(ρ0×m3) calculate unit mass dust suppressant and be averaged dust suppression rate, in formula, R is unit
Quality dust suppressant is averaged dust suppression rate, ρ0For the dust concentration before dust suppressant sprinkling, ρxFor the dust concentration after dust suppressant sprinkling, m3
For the sprinkling quality of dust suppressant；
Step 8: repeating step 1 to step 6, and be often repeated once test, and it is all that dust suppressant sprinkling increases a sprinkling
Phase, repetitive process is intended to calculate the dust suppressant routine dust suppression rate after this time test each time, and dust suppressant routine dust suppression rate
Calculation formula is P=(ρ0-ρx)/ρ0, in formula, P is dust suppressant routine dust suppression rate, ρ0For the dust concentration before dust suppressant sprinkling, ρx
For the dust concentration after dust suppressant sprinkling；When dust suppressant routine dust suppression rate level off to for the first time 1 when, record this time test dust suppressant
Sprinkling quality, and be denoted as the critical effective mass of dust suppressant；
Step 9: the unit mass dust suppressant average wind loss rate of acquisition, unit mass dust suppressant are averaged dust suppression rate and suppression
Evaluation index of the critical effective mass of dust agent as dust suppressant wind resistance, and unit mass dust suppressant average wind loss rate it is smaller,
Unit mass dust suppressant is averaged, and dust suppression rate is bigger, the critical effective mass of dust suppressant is smaller, shows the wind resistance of the dust suppressant more
It is good.
The utility model has the beneficial effects that
The dust suppressant wind resistance test macro of the utility model, can effectively promote test repeatability and test is accurate
Property, and be firstly introduced unit mass dust suppressant average wind loss rate, unit mass dust suppressant be averaged dust suppression rate and dust suppressant it is critical
Evaluation index of the effective mass as dust suppressant wind resistance, keeps evaluation index more scientific.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of dust suppressant wind resistance test macro of the utility model；
In figure, 1-test chamber, 2-electrodeless frequency conversion fans, 3-air velocity transducers, 4-dust sample holding vessels, 5-
Plate electric heater, 6-dust concentration detectors, 7-HEPA strainers, the 8-the first elevating lever, the 9-the second elevating lever, 10-the
Three elevating levers, the 11-the four elevating lever, 12-articulated joints, 13-dust suppressant storage tanks, 14-kinetic pumps, 15-feed liquid hoses,
16-uniformly distributed flat fan spray heads, 17-solenoid valves, 18-screw sliding blocks, 19-screw rods, 20-guide rails, 21-stepper motors, 22-
Bearing block, 23-imbibition pipelines, 24-Drainage pipes, 25-electromagnetic flowmeters.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, a kind of dust suppressant wind resistance test macro, including test chamber 1, electrodeless frequency conversion fan 2, wind speed pass
Sensor 3, dust sample holding vessel 4, plate electric heater 5, dust concentration detector 6, HEPA strainer 7 and dust suppressant spraying machine
Structure；The test chamber 1 uses tubular construction, and test chamber 1 is horizontal positioned, the electrodeless frequency conversion fan 2, air velocity transducer 3, dust
Sample holding vessel 4, plate electric heater 5, dust concentration detector 6 and HEPA strainer 7 are respectively positioned on inside test chamber 1, and nothing
Pole frequency conversion fan 2, air velocity transducer 3, plate electric heater 5, dust concentration detector 6 and HEPA strainer 7 are along 1 axis of test chamber
It is arranged to direction sequence；The HEPA strainer 7 all blocks the nozzle of test chamber 1；The dust sample holding vessel 4 is placed
Above plate electric heater 5, and dust sample holding vessel 4 uses cuboid vessel；The dust suppressant spraying mechanism is located at
1 top of test chamber.
The first elevating lever 8, the second elevating lever 9, third elevating lever 10 and the 4th are respectively arranged with inside the test chamber 1
Elevating lever 11；The electrodeless frequency conversion fan 2 is mounted on 8 top of the first elevating lever, and electrodeless frequency conversion fan 2 and the first elevating lever 8 push up
It is connected between end by articulated joint 12, electrodeless frequency conversion fan 2 has pitch angle regulating power by articulated joint 12；It is described
Air velocity transducer 3 is mounted on 9 top of the second elevating lever；The dust sample holding vessel 4 and plate electric heater 5 are mounted on
Three elevating levers, 10 top；The dust concentration detector 6 is mounted on 11 top of the 4th elevating lever.
The dust suppressant spraying mechanism includes dust suppressant storage tank 13, kinetic pump 14, feed liquid hose 15, uniformly distributed flat fan spray head
16, solenoid valve 17, screw sliding block 18, screw rod 19, guide rail 20 and stepper motor 21；The guide rail 20 and stepper motor 21 are fixedly mounted with
In 1 inner top of test chamber, guide rail 20 is parallel with 1 central axes of test chamber；Described 19 one end of screw rod and stepper motor 21
Motor shaft is fixedly connected with, and 19 other end of screw rod is connected by bearing block 22 with 1 inner top of test chamber, and screw rod 19 is equal with guide rail 20
Row；The screw sliding block 18 is connected between screw rod 19 and guide rail 20, and screw sliding block 18 has relative to screw rod 19 and guide rail 20
Move linearly freedom degree；The solenoid valve 17 is packed on screw sliding block 18, and the uniformly distributed flat fan spray head 16 is mounted on solenoid valve
17 liquid outlet, uniformly distributed flat fan spray head 16 are located at 4 top of dust sample holding vessel；The dust suppressant storage tank 13 and kinetic pump 14
It is respectively positioned on test chamber 1 out of my cabin, is connected between dust suppressant storage tank 13 and 14 suction inlet of kinetic pump by imbibition pipeline 23, kinetic pump 14
Outlet passes sequentially through Drainage pipe 24 and feed liquid hose 15 is connected with the inlet of solenoid valve 17, in 1 cabin of test chamber
Drainage pipe mounting hole is offered on wall；Electromagnetic flowmeter 25 is installed on the Drainage pipe 24.
A kind of dust suppressant wind resistance test method, using the dust suppressant wind resistance test macro, including such as
Lower step:
Step 1: quantitatively adding the dust sample of test in Xiang Fenchen sample holding vessel 4, while to dust suppressant storage tank
Dust suppressant to be detected is injected in 13；
Step 2: electrodeless frequency conversion fan 2, air velocity transducer 3, dust sample holding vessel 4 and dust concentration detection are adjusted
The height and position of instrument 6 makes air velocity transducer 3, dust sample holding vessel 4 and dust concentration detector 6 be in distinguished and admirable range
It is interior, while the pitch angle of electrodeless frequency conversion fan 2 is adjusted, the wind direction and dust sample for exporting electrodeless frequency conversion fan 2 are contained
Put dust sample upper surface in vessel 4 it is parallel or have angle；
Step 3: starting electrodeless frequency conversion fan 2, by the distinguished and admirable wind speed of 3 real-time detection of air velocity transducer, until wind speed is steady
After fixed, dust concentration value at this time is recorded by dust concentration detector 6, is then shut off electrodeless frequency conversion fan 2；
Step 4: starting kinetic pump 14, opens solenoid valve 17, the dust suppressant in dust suppressant storage tank 13 successively pass through pipette
Road 23, kinetic pump 14, Drainage pipe 24, feed liquid hose 15 and solenoid valve 17 enter in uniformly distributed flat fan spray head 16, and by uniformly distributed
Dust suppressant is uniformly sprayed onto dust sample upper surface by flat fan spray head 16, and dust suppressant sprinkling section is uniform smear shape；Together
Shi Qidong stepper motor 21 makes uniformly to put down fan spray head 16 by 19 one end of screw rod and is moved to the other end, closes solenoid valve 17, suppression later
Dust agent is completed a sprinkling period, then the numerical value by showing on electromagnetic flowmeter 25 can be obtained the sprinkling quality of dust suppressant；
In the present embodiment, the opening and closing control of solenoid valve 17 selects single-chip microcontroller to be controlled, to realize the accurate control of dust suppressant sprinkling start and stop
System；
Step 5: starting plate electric heater 5, to the dust sample heating, drying in dust sample holding vessel 4, drying
Time is set as 30 minutes, then weighs to the dust sample after drying, and record the quality of dust sample；This implementation
In example, electric heater 5, which is selected, has temperature automatically controlled and temperature display function electric heater, to realize that the heating of dust sample is dried
Dry is precisely controlled；
Step 6: restarting electrodeless frequency conversion fan 2, passes through the distinguished and admirable wind speed of 3 real-time detection of air velocity transducer, Zhi Daofeng
After speed is stablized, dust concentration value at this time is recorded by dust concentration detector 6, is then shut off electrodeless frequency conversion fan 2；
Step 7: pass through formula Q=(m1-m2)/(m1×m3) calculate unit mass dust suppressant average wind loss rate, in formula,
Q is unit quality dust suppressant average wind loss rate, m1For sprinkling dust suppressant after and complete drying and blower starting before dust sample
Quality, m2For sprinkling dust suppressant after and complete drying and blower close after dust sample mass, m3For the sprinkling matter of dust suppressant
Amount；Meanwhile passing through formula R=(ρ0-ρx)/(ρ0×m3) calculate unit mass dust suppressant and be averaged dust suppression rate, in formula, R is unit
Quality dust suppressant is averaged dust suppression rate, ρ0For the dust concentration before dust suppressant sprinkling, ρxFor the dust concentration after dust suppressant sprinkling, m3
For the sprinkling quality of dust suppressant；
Step 8: repeating step 1 to step 6, and be often repeated once test, and it is all that dust suppressant sprinkling increases a sprinkling
Phase, repetitive process is intended to calculate the dust suppressant routine dust suppression rate after this time test each time, and dust suppressant routine dust suppression rate
Calculation formula is P=(ρ0-ρx)/ρ0, in formula, P is dust suppressant routine dust suppression rate, ρ0For the dust concentration before dust suppressant sprinkling, ρx
For the dust concentration after dust suppressant sprinkling；When dust suppressant routine dust suppression rate level off to for the first time 1 when, record this time test dust suppressant
Sprinkling quality, and be denoted as the critical effective mass of dust suppressant；
Step 9: the unit mass dust suppressant average wind loss rate of acquisition, unit mass dust suppressant are averaged dust suppression rate and suppression
Evaluation index of the critical effective mass of dust agent as dust suppressant wind resistance, and unit mass dust suppressant average wind loss rate it is smaller,
Unit mass dust suppressant is averaged, and dust suppression rate is bigger, the critical effective mass of dust suppressant is smaller, shows the wind resistance of the dust suppressant more
It is good.
Scheme in embodiment is not the scope of patent protection to limit the utility model, all without departing from the utility model
Carried out by equivalence enforcement or change, be both contained in the scope of the patents of this case.
Claims (3)
1. a kind of dust suppressant wind resistance test macro, it is characterised in that: including test chamber, electrodeless frequency conversion fan, wind speed sensing
Device, dust sample holding vessel, plate electric heater, dust concentration detector, HEPA strainer and dust suppressant spraying mechanism；It is described
Test chamber uses tubular construction, and test chamber is horizontal positioned, the electrodeless frequency conversion fan, air velocity transducer, dust sample holder
Ware, plate electric heater, dust concentration detector and HEPA strainer are respectively positioned on inside test chamber, and electrodeless frequency conversion fan, wind speed
Sensor, plate electric heater, dust concentration detector and HEPA strainer are arranged along test chamber axial direction sequence；It is described
HEPA strainer all blocks the nozzle of test chamber；The dust sample holding vessel is placed on above plate electric heater, and
Dust sample holding vessel uses cuboid vessel；The dust suppressant spraying mechanism is located at the top of test chamber.
2. a kind of dust suppressant wind resistance test macro according to claim 1, it is characterised in that: in the test chamber
Portion is respectively arranged with the first elevating lever, the second elevating lever, third elevating lever and the 4th elevating lever；The electrodeless frequency conversion fan installation
On the first elevating lever top, it is connected between electrodeless frequency conversion fan and the first elevating lever top by articulated joint, electrodeless frequency conversion wind
Machine has pitch angle regulating power by articulated joint；The air velocity transducer is mounted on the second elevating lever top；The powder
Dirt sample holding vessel and plate electric heater are mounted on third elevating lever top；The dust concentration detector is mounted on the 4th
Elevating lever top.
3. a kind of dust suppressant wind resistance test macro according to claim 1, it is characterised in that: the dust suppressant sprinkling
Mechanism includes dust suppressant storage tank, kinetic pump, feed liquid hose, uniformly distributed flat fan spray head, solenoid valve, screw sliding block, screw rod, guide rail and step
Into motor；The guide rail and stepper motor are packed in test chamber inner top, and guide rail is parallel with test chamber central axes；Institute
The motor shaft for stating screw rod one end and stepper motor is fixedly connected with, and the screw rod other end is connected by bearing block with test chamber inner top,
Screw rod is parallel with guide rail；The screw sliding block is connected between screw rod and guide rail, and screw sliding block has relative to screw rod and guide rail
There is linear movement freedom degree；The solenoid valve is packed on screw sliding block, and the uniformly distributed flat fan spray head is mounted on going out for solenoid valve
Liquid mouth, uniformly distributed flat fan spray head are located above dust sample holding vessel；The dust suppressant storage tank and kinetic pump are respectively positioned on test chamber
Out of my cabin, it is connected between dust suppressant storage tank and power Pump Suction Nozzle by imbibition pipeline, power pump discharge passes sequentially through drain pipe
Road and feed liquid hose are connected with the inlet of solenoid valve, offer Drainage pipe mounting hole on the test chamber bulkhead；?
Electromagnetic flowmeter is installed on the Drainage pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821813486.0U CN209215171U (en) | 2018-11-05 | 2018-11-05 | A kind of dust suppressant wind resistance test macro |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821813486.0U CN209215171U (en) | 2018-11-05 | 2018-11-05 | A kind of dust suppressant wind resistance test macro |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085102A (en) * | 2018-11-05 | 2018-12-25 | 辽宁工程技术大学 | A kind of dust suppressant wind resistance test macro and method |
| CN111896214A (en) * | 2020-07-10 | 2020-11-06 | 太原理工大学 | Open-air coal pile dust-rising amount test similar experiment system and measurement method |
-
2018
- 2018-11-05 CN CN201821813486.0U patent/CN209215171U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085102A (en) * | 2018-11-05 | 2018-12-25 | 辽宁工程技术大学 | A kind of dust suppressant wind resistance test macro and method |
| CN109085102B (en) * | 2018-11-05 | 2023-10-20 | 辽宁工程技术大学 | Dust suppressant wind resistance performance test system and method |
| CN111896214A (en) * | 2020-07-10 | 2020-11-06 | 太原理工大学 | Open-air coal pile dust-rising amount test similar experiment system and measurement method |
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