CN107063948A - A kind of full automatic pulverized coal sampling analysis instrument - Google Patents
A kind of full automatic pulverized coal sampling analysis instrument Download PDFInfo
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- CN107063948A CN107063948A CN201710528304.9A CN201710528304A CN107063948A CN 107063948 A CN107063948 A CN 107063948A CN 201710528304 A CN201710528304 A CN 201710528304A CN 107063948 A CN107063948 A CN 107063948A
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- screen cloth
- analysis system
- coal dust
- full automatic
- pulverized coal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0272—Investigating particle size or size distribution with screening; with classification by filtering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N2035/00465—Separating and mixing arrangements
- G01N2035/00475—Filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N2035/1027—General features of the devices
- G01N2035/1048—General features of the devices using the transfer device for another function
- G01N2035/1058—General features of the devices using the transfer device for another function for mixing
- G01N2035/106—General features of the devices using the transfer device for another function for mixing by sucking and blowing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
Include support the invention discloses a kind of full automatic pulverized coal sampling analysis instrument, sampler, analysis system, control unit and weighing device, it is characterized in that, the sampler and analysis system are in turn secured to the support from top to bottom, the delivery outlet of the sampler is connected with the input port of the analysis system, the sampler is used to extract coal dust sample and by analysis system described in the coal dust token import, the analysis system classifies the coal dust sample according to different-grain diameter, the weighing device is weighed to the coal dust sample of different-grain diameter, described control unit is used to control the sampler, the operation of analysis system and weighing device.The full automatic pulverized coal sampling analysis instrument improves the accuracy rate of analysis result, reduces the labor intensity of operating personnel, and the health and environment to operating personnel are had no adverse effect, and test period is fixed, and improves operating efficiency.
Description
Technical field
The present invention relates to coal dust sampling, fineness of pulverized coal field of measuring technique, and in particular to a kind of full automatic pulverized coal sampling point
Analyzer.
Background technology
Boiler is generally using the burning of coal dust suspended pattern, and fineness of pulverized coal is the important parameter of boiler combustion adjustment, and its is direct
Influence the security and economy of boiler operatiopn.Coal dust is thinner, and after-flame degree is higher, and machinery and the imperfect combustion loss of chemistry are got over
Small, carbon residue in flying ash is lower, while helping to reduce boiler scaling (being commonly called as coking).However, coal dust is thinner, pulverized coal preparation system power consumption
Amount is higher, and operating cost is dramatically increased.Therefore, in boiler operatiopn, it is necessary to according to the change of boiler combustion ature of coal accurately and timely
Ground is measured and controls fineness of pulverized coal, and fineness of pulverized coal is maintained within a certain range, boiler is run in the best condition, simultaneously
Control the cost of coal dust.
The measure of fineness of pulverized coal generally using power industry standard DL/T567.5-95 thermal power plant fuels test method-
《The measure of fineness of pulverized coal》, that is, the coal dust for weighing certain mass is placed in defined testing sieve, after screening completely, according to testing sieve
Upper remaining quality of pc calculates fineness of pulverized coal.Coal dust sample is extracted by sampler from primary air piping, but analysis afterwards
All by being accomplished manually, such as sieve, weigh.Screening mainly has artificial screening and a vibrosieve, artificial screening labor intensity compared with
Greatly, sieving time is longer, and the health and environment to operating personnel are all adversely affected, and are difficult to ensure that sieving time and screening
The uniformity of dynamics.Although vibrosieve reduces the labor intensity of operating personnel, and sieving time and screening are also can guarantee that substantially
Dynamics, but operating personnel still need that coal dust sample is placed on screening machine manually, after vibrosieve terminates, then go to weigh,
I.e. each step be required for operating personnel assist completion, not only analysis time be difficult to ensure that, and to operating personnel health and
Environment still suffers from adverse effect.Further, since pulverized coal particle is smaller, lighter in weight, in artificial screening and During Process of Screening of Vibration Screen
Easily fly away, cause collection to weigh difficulty, influence weighing results, eventually reduce the measurement accuracy of fineness of pulverized coal.
The content of the invention
It is an object of the invention to provide a kind of full automatic pulverized coal sampling analysis instrument, to solve existing fineness of pulverized coal analysis
Present in measurement accuracy is poor, analysis time is difficult to ensure that, operator's health and surrounding environment are asked in the presence of adverse effect
Topic.
To achieve the above object, the full automatic pulverized coal sampling analysis instrument that the present invention is provided includes support, sampler, analysis system
System, weighing device and control unit, the sampler and analysis system are in turn secured to the support, the sampling from top to bottom
The delivery outlet of device is connected with the input port of the analysis system, and the sampler is used to extract coal dust sample and try the coal dust
Sample inputs the analysis system, and the analysis system classifies the coal dust sample according to different-grain diameter, the weighing device pair
The coal dust sample of different-grain diameter is weighed, and described control unit is used to control the sampler, analysis system and weigh
The operation of device.
Wherein, the sampler includes rotation sampling gun, cyclone separator, middle storage tank and storing tank valve, described
The delivery outlet of cyclone separator and the middle storage tank input port connection, the delivery outlet of the middle storage tank with described point
The input port connection of analysis system, the storing tank valve is arranged on the delivery outlet and the analysis system of the middle storage tank
Between input port, the cyclone separator is used to extract the coal dust sample, and the middle storage tank is used to store the whirlwind
The coal dust sample that separator is extracted, the storing tank valve is used to cutting off or connecting the middle storage tank and the analysis
System.
Wherein, the analysis system includes housing, the first screen cloth, the second screen cloth, motor, horizontal rotating shaft, vertically
Vibrating shaft, vertical vibration electromagnet, horizontal vibration axle and horizontal vibration electromagnet, wherein, the horizontal rotating shaft, the first screen cloth
Be arranged at the second screen cloth in the housing, first screen cloth and the second screen cloth using the horizontal rotating shaft as axle inside and outside it is nested
The horizontal rotating shaft is fixed on, the drive shaft of the motor is connected with the horizontal rotating shaft, in the motor
Driving under, the horizontal rotating shaft drives first screen cloth and the second screen cloth rotates with the horizontal rotating shaft, described vertical
Straight vibrating shaft and the horizontal vibration axle are fixed on outside the housing and are mutually perpendicular to, and the vertical vibration electromagnet is fixed on institute
State support and positioned at the top of the housing, the vertical vibration electromagnet and the Vertical Vibrating moving axis adhesive or separate, so that
The vibration force of vertical direction is provided for the housing, the first screen cloth and the second screen cloth；The horizontal vibration electromagnet is fixed on institute
State support and positioned at the side of the housing, the horizontal vibration electromagnet and the horizontal vibration axle adhesive or separate, so that
The vibration force of horizontal direction is provided for the housing, the first screen cloth and the second screen cloth.
Wherein, the mesh number of first screen cloth is 60~80 mesh, and the mesh number of second screen cloth is 150~200 mesh.
Wherein, the weighing device includes the first weighing device, the second weighing device and the 3rd weighing device, described first
Weighing device is arranged at the bottom of first screen cloth, for being carried out to the coal dust sample being trapped on first screen cloth
Weigh；Second weighing device is arranged at the bottom of second screen cloth, for the institute to being trapped on second screen cloth
Coal dust sample is stated to be weighed；3rd weighing device is arranged on the bottom of the analysis system, for through described
The minimum coal dust sample of the particle diameter of one screen cloth and the second screen cloth is weighed.
Wherein, the 3rd weighing device includes weighing tank and weighing sensor, and the weighing tank is arranged on the analysis
The bottom of system, the input port of the weighing tank is connected with the delivery outlet of the analysis system, the grain that the analysis system is obtained
The input port of delivery outlet and the weighing tank of the minimum coal dust sample in footpath successively through the analysis system enters described claim
Batch can, the weighing sensor is arranged on the bottom of the weighing tank, for claiming to the minimum coal dust sample of particle diameter
Weight.
Preferably, the full automatic pulverized coal sampling analysis instrument also includes air feed appliance, the feeding of the air feed appliance
Pipe is connected with the outlet of the weighing tank, and the coal dust sample is sent into specific bit by the air-flow in the air feed appliance
Put.
Preferably, the full automatic pulverized coal sampling analysis instrument also includes air knife purging system, and the air knife system includes sky
Press, air nozzle and the connecting tube for connecting the air compressor machine and the air nozzle, the air nozzle are arranged in the housing,
The compressed air that the air compressor machine is provided purges the enclosure interior by air nozzle.
Preferably, the analysis system also includes vavuum pump, and the bleeding point of the vavuum pump is connected with the housing, described
Vavuum pump is used to be evacuated in the housing.
Preferably, the full automatic pulverized coal sampling analysis instrument also includes host computer, and the host computer passes through 485 interfaces and institute
The data transmission interface connection of full automatic pulverized coal sampling analysis instrument is stated, to obtain the experiment of the full automatic pulverized coal sampling analysis instrument
Data.
The invention has the advantages that：
The full automatic pulverized coal sampling analysis instrument that the present invention is provided, sampler and analysis system are directly connected to, without operator
Member is manually operated to add analysis system by coal dust sample, and analysis process is automatically performed by analysis system, is significantly improved
The accuracy rate of analysis result, greatly reduces labor intensity, and the health and environment to operating personnel have no adverse effect, Er Qiefen
The analysis time is fixed, and is conducive to improving analysis operating efficiency.
It is used as a preferred embodiment of the present invention, because screening process is carried out in closed housing, coal dust sample
It will not lose, weighing results are accurate, so as to improve the measurement accuracy of fineness of pulverized coal.
Brief description of the drawings
Fig. 1 is the structural representation of full automatic pulverized coal sampling analysis instrument provided in an embodiment of the present invention.
Fig. 2 is the workflow diagram of full automatic pulverized coal sampling analysis instrument provided in an embodiment of the present invention.
Embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
Embodiment 1
As shown in figure 1, full automatic pulverized coal sampling analysis instrument include support 11, sampler, analysis system 13, control unit and
Weighing device, sampler and analysis system 13 are in turn secured on support 11 from top to bottom.Wherein, sampler is fixed on support 11
Top, for extracting coal dust sample from pulverized coal channel, the delivery outlet of sampler connects with the input port of analysis system 13, takes
The coal dust sample that sample device 12 is gathered enters analysis system 13 by the input port of analysis system 13.Analysis system 13 is by coal dust sample
Classify according to different-grain diameter, weighing device is used to weigh to the coal dust sample of different-grain diameter, and control unit takes for control
The operation of sample device, analysis system 13 and weighing device.
The present embodiment sampler includes whirlwind sampler 10, cyclone separator 12, middle storage tank 15 and storing tank valve
17, whirlwind sampler 10, cyclone separator 12, middle storage tank 15 are sequentially communicated, i.e. the delivery outlet of whirlwind sampler 10 and rotation
The input port connection of wind separator 12, the delivery outlet of cyclone separator 12 is connected with the input port of middle storage tank 15, centre storage
The delivery outlet of batch can 15 is connected with the input port of analysis system 13 by coal dust delivery pipe 16, and storing tank valve 17 is arranged on centre
Between the delivery outlet of storage tank 15 and the input port of analysis system 13.Whirlwind sampler 10 is used to extract coal dust from pulverized coal channel
Sample, the coal dust sample that whirlwind sampler 10 is extracted is the mixture of gas and coal dust, and cyclone separator 12 is used to try coal dust
Sample is separated from the mixture of gas and coal dust, and middle storage tank is used for the coal dust sample for storing the separation of cyclone separator 12, storage
Batch can valve 17 is used to cutting off or connecting middle storage tank 15 and analysis system 17.
Analysis system 13 classifies coal dust sample according to different-grain diameter.Specifically, analysis system 13 includes housing 25, first
Screen cloth 18, the second screen cloth 19, motor 20, horizontal rotating shaft (not shown), Vertical Vibrating moving axis 21, vertical vibration electromagnetism
Iron 22, horizontal vibration axle 23 and horizontal vibration electromagnet 24, wherein, horizontal rotating shaft, the first screen cloth 18 and the second screen cloth 19 are solid
Due in housing 25, the first screen cloth 18 and the second screen cloth 19 using horizontal rotating shaft as axle inside and outside it is nested be fixed on horizontal rotating shaft,
The drive shaft of motor 20 is connected with horizontal rotating shaft, under the driving of motor 20, and horizontal rotating shaft drives first to sieve
The screen cloth 19 of net 18 and second is rotated with horizontal rotating shaft, and Vertical Vibrating moving axis 21 and horizontal vibration axle 23 are fixed on outside housing 25 and phase
Mutually vertical, vertical vibration electromagnet 22 is fixed on support 11 and positioned at the top of housing 25, vertical vibration electromagnet 22 with it is vertical
The adhesive of vibrating shaft 21 or separation, so as to provide the vibration force of vertical direction for housing 25, the first screen cloth 18 and the second screen cloth 19；Water
Flat vibration electromagnet 24 is fixed on support 11 and positioned at the side of housing 25, and horizontal vibration electromagnet 24 is inhaled with horizontal vibration axle 23
Close or separate, so as to provide the vibration force of horizontal direction for housing 25, the first screen cloth 18 and the second screen cloth 19.It can be appreciated that whole
Individual screening process is carried out in housing 25, therefore the health and environment of operator will not be adversely affected.
In the present embodiment, the mesh number of the first screen cloth is 60~80 mesh, and it retains the coal dust sample that particle diameter is more than R90.The
The mesh number of two screen clothes is 150~200 mesh, and it retains the coal dust sample that particle diameter is more than R200.As the first screen cloth uses the sieve of 80 mesh
Net, the second screen cloth uses the screen cloth of 170 mesh.
Weighing device includes the first weighing device (not shown), the second weighing device (not shown) and the 3rd and claimed
Refitting puts 14, and the first weighing device is arranged on the bottom of the first screen cloth 18, and it is big to be trapped in particle diameter on the first screen cloth 18 for weighing
In the weight of R90 coal dust sample.Second weighing device is arranged on the bottom of the second screen cloth 19, and the second sieve is trapped in for weighing
Particle diameter is more than the weight of R200 coal dust sample on net 19.It can be appreciated that the first screen cloth 18 and the second screen cloth 19 are by different-grain diameter
The retention of coal dust sample, the only coal dust sample of particle diameter minimum (thin) can pass through the first screen cloth 18 and the second screen cloth 19 reach point
The bottom of analysis system 13.
3rd weighing device 14 includes weighing tank 26 and weighing sensor 27, and weighing tank 26 is arranged on the bottom of analysis system 13
Portion, the input port of weighing tank 26 is connected with the delivery outlet of analysis system 13, is reached point through the first screen cloth 18 and the second screen cloth 19
The input port of delivery outlet and weighing tank 26 of the minimum coal dust sample of the particle diameter of the bottom of analysis system 13 successively through analysis system 13
Into weighing tank 26.Weighing sensor 27 is arranged on the bottom of weighing tank 26, and 27 pairs of weighing sensor is stored in weighing tank 26
The minimum coal dust sample of particle diameter is weighed.Specifically, when in weighing tank 26 without storage pulverized coal particle, weighing sensor 27
Obtain the weight of weighing tank 26；When storing pulverized coal particle in weighing tank 26, weighing sensor 27 obtains weighing tank 26 and coal
The gross weight of powder particles, the nt wt net weight that gross weight subtracts weighing tank 26 can obtain the weight of the minimum coal dust sample of particle diameter.
It can be appreciated that the first weighing device, the second weighing device and the 3rd weighing device 14 are more than R90 coal dust to particle diameter
Sample, particle diameter are weighed respectively in the coal dust sample that R90-R200 coal dust sample and particle diameter are less than R200, obtain this
The weight of the coal dust sample of three kinds of particle diameters, the equal energy of precision of the first weighing device, the second weighing device and the 3rd weighing device 14
0.01g is reached, the standard determined in national standard to fineness of pulverized coal is fully met.
In addition, full automatic pulverized coal sampling analysis instrument also includes air feed appliance 28, air feed appliance 28 is arranged on weighing tank
26 bottom, the feed pipe of air feed appliance 28 is connected with the outlet of weighing tank 26, and the air-flow in air feed appliance 28 is by grain
Footpath is less than R200 coal dust sample feeding specified location, is such as delivered to pulverized coal channel.In addition, by the first screen cloth 18 and the second screen cloth
The particle diameter of 19 retentions is more than R90 coal dust sample, particle diameter and discharged in R90-R200 coal dust sample from the input port of analysis system,
That is rotation housing 25 makes the input mouth down of analysis system, so that the coal dust sample, particle diameter by particle diameter more than R90 are in R90-R200
Coal dust sample discharge.
In order to which coal dust sample, particle diameter that particle diameter is more than to R90 are smoothly discharged in R90-R200 coal dust sample, while making complete
Automatic coal dust sampling analysis instrument cleaning, especially makes to keep cleaning in housing 25.Full automatic pulverized coal sampling analysis instrument also includes air knife
Purging system (not shown), air knife purging system includes the company of air compressor machine, air nozzle and connection air compressor machine and air nozzle
Adapter, air nozzle is arranged in housing 25, and the compressed air that air compressor machine is provided is purged inside housing 25 by air nozzle, so that will
Particle diameter is more than R90 coal dust sample, particle diameter and discharged in R90-R200 coal dust sample from the input port of analysis system.Air knife is cleaned
System had both contributed to the discharge of coal dust sample, cleaning of again inside housing 25, be next time analysis experiment prepare, with improve it is complete from
The analysis precision of dynamic coal dust sampling analysis instrument.
Preferably, full automatic pulverized coal sampling analysis instrument also include vavuum pump (not shown), the bleeding point of vavuum pump with
Housing 25 is connected, and vavuum pump is used to the inside of housing 25 being evacuated, and vavuum pump coordinates air knife purging system cleaning first to sieve
Net 18, the second screen cloth 19 and housing 25.Specifically, after full automatic pulverized coal sampling analysis instrument completes to analyze, air knife purging system
The first screen cloth 18, the second screen cloth 19 and housing 25 are purged, stops purging afterwards, vavuum pump will be evacuated in housing 25, air knife
Purging system is purged to the first screen cloth 18, the second screen cloth 19 and housing 25 again, so after circulation repeatedly, the first screen cloth
18th, the second screen cloth 19 and housing 25 are cleaned.
The present embodiment full automatic pulverized coal sampling analysis instrument also includes host computer, and host computer passes through 485 interfaces and full-automatic coal
The data transmission interface connection of powder sampling analysis instrument, specifically, host computer pass through 485 interfaces and the first weighing device, the second title
The data output interface connection with the 3rd weighing device is put in refitting, to obtain the test data of full automatic pulverized coal sampling analysis instrument.
Host computer results in the gross weight of this coal dust sample by calculating, while resulting in the hundred of the coal dust sample of different-grain diameter
Divide ratio.
It should be noted that host computer can connect multiple full automatic pulverized coal sampling analysis instrument, can be simultaneously to multiple coal dusts
Sample carries out analysis experiment, and only need to press start key can complete total Test process, greatly reduce the work of operating personnel
Intensity, has no adverse effect to health and environment, while test period is fixed, is conducive to overall control test period, so as to improve
Operating efficiency.
It should also be noted that, in actual use, full automatic pulverized coal sampling analysis instrument can be fixed on to a position
Use, that is, be designed to fixed full automatic pulverized coal sampling analysis instrument, roller can also be set in the lower section of support 11 as needed,
It is designed to mobile full-automatic coal dust sampling analysis instrument.
With reference to shown in reference to Fig. 1 and Fig. 2, the workflow of full automatic pulverized coal sampling analysis instrument comprises the following steps：
Step S1, whirlwind sampling gun gathers coal dust sample from pulverized coal channel, and middle storing is stored in after the separation of coal dust sample
Tank.
The present embodiment sampler is acquired by whirlwind sampling mode to coal dust sample, and this acquisition mode can be continuous
Uninterrupted sampling coal dust sample, and acquisition coal dust sample can more embody the characteristic of coal dust in pulverized coal channel, but whirlwind sampling is robbed
The mixture that coal dust sample is gas and coal dust is obtained, cyclone separator separates gas, obtain coal dust sample, the storage of coal dust sample
In the presence of in middle storage tank.
Step S2, analysis system is delivered to by coal dust sample from middle storage tank.
Open the housing that the coal dust sample in storing tank valve 17, middle storage tank 15 enters analysis system 13 by gravity
In 25, the coal dust sample in housing 25 is had just enter into the first screen cloth 18.
Step S3, starts motor, screening pulverized coal sample.
Starting motor 20 rotates the first screen cloth 18 and the second screen cloth 19, while making the first screen cloth 18 and the second screen cloth
19 in the horizontal direction or vertical direction alternate intermittent vibration, particle diameter be more than R90 coal dust sample be trapped within the first screen cloth 18
Interior, coal dust sample of the particle diameter between R90 and R200 is trapped within the second screen cloth 19, and only particle diameter is less than R200 coal dust
Sample can be sized the bottom of housing 25 through the first screen cloth 18 and the second screen cloth 19, and enter weighing tank 26.
Step S4, weighs respectively to the coal dust sample of different-grain diameter.
First weighing device, the second weighing device and the 3rd weighing device 14 are more than R90 coal dust sample, particle diameter to particle diameter
The coal dust sample that coal dust sample and particle diameter between R90 and R200 are less than R200 is weighed respectively, obtains different-grain diameter
Coal dust sample weight, precision can reach 0.1g.
Step S5, calculates the percentage for the coal dust sample for obtaining different-grain diameter.
First weighing device, the second weighing device and the 3rd weighing device 14 send the data of measurement by 485 interfaces
To host computer, host computer obtains the percentage shared by the gross weight and different coal dust samples of coal dust sample by calculating.
Step S6, sends coal dust sample back to pulverized coal channel.
After coal dust sample testing is finished, all coal dust samples send specified location, such as coal pipe back to through air feed appliance
Road.
Step S7, cleans analysis system.
Start air knife purging system and vavuum pump, clean analysis system, make inside housing 25, the first screen cloth 18, second
Screen cloth 19 keeps cleaning, is that experiment next time is prepared.
The full automatic pulverized coal sampling analysis instrument that the present embodiment is provided, sampler and analysis system are directly connected to, without operation
Personnel are manually operated to add analysis system by coal dust sample, and analysis process is automatically performed by analysis system, is improved
The accuracy rate of analysis result, greatly reduces labor intensity, and the health and environment to operating personnel have no adverse effect, and test simultaneously
Time is fixed, and is conducive to overall control test period, so as to improve operating efficiency.
Although above with general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (10)
1. a kind of full automatic pulverized coal sampling analysis instrument, the full automatic pulverized coal sampling analysis instrument includes support, sampler, analysis system
System, weighing device and control unit, it is characterised in that the sampler and analysis system are in turn secured to the branch from top to bottom
Frame, the delivery outlet of the sampler is connected with the input port of the analysis system, and the sampler is used to extract coal dust sample simultaneously
By analysis system described in the coal dust token import, the analysis system classifies the coal dust sample according to different-grain diameter, institute
State weighing device to weigh to the coal dust sample of different-grain diameter, described control unit is used to control the sampler, divided
The operation of analysis system and weighing device.
2. full automatic pulverized coal sampling analysis instrument according to claim 1, it is characterised in that the sampler takes including rotation
Sample rifle, cyclone separator, middle storage tank and storing tank valve, the delivery outlet of the cyclone separator and the middle storage tank
Input port connection, the delivery outlet of the middle storage tank connects with the input port of the analysis system, the storing tank valve
It is arranged between the delivery outlet of the middle storage tank and the input port of the analysis system, the cyclone separator is used to extract
The coal dust sample, the middle storage tank is used to store the coal dust sample that the cyclone separator is extracted, the storing
Tank valve is used to cutting off or connecting the middle storage tank and the analysis system.
3. full automatic pulverized coal sampling analysis instrument according to claim 1, it is characterised in that the analysis system includes shell
Body, the first screen cloth, the second screen cloth, motor, horizontal rotating shaft, Vertical Vibrating moving axis, vertical vibration electromagnet, horizontal vibration axle
With horizontal vibration electromagnet, wherein, the horizontal rotating shaft, the first screen cloth and the second screen cloth are arranged in the housing, described
First screen cloth and the second screen cloth using the horizontal rotating shaft as axle inside and outside nesting be fixed on the horizontal rotating shaft, the driving electricity
The drive shaft of machine is connected with the horizontal rotating shaft, under the driving of the motor, and the horizontal rotating shaft drives described
First screen cloth and the second screen cloth are rotated with the horizontal rotating shaft, and the Vertical Vibrating moving axis and the horizontal vibration axle are fixed on institute
State outside housing and be mutually perpendicular to, the vertical vibration electromagnet is fixed on the support and positioned at the top of the housing, described
Vertical vibration electromagnet and the Vertical Vibrating moving axis adhesive are separated, so as to be carried for the housing, the first screen cloth and the second screen cloth
For the vibration force of vertical direction；The horizontal vibration electromagnet is fixed on the support and positioned at the side of the housing, described
Horizontal vibration electromagnet and the horizontal vibration axle adhesive are separated, so as to be carried for the housing, the first screen cloth and the second screen cloth
For the vibration force of horizontal direction.
4. full automatic pulverized coal sampling analysis instrument according to claim 3, it is characterised in that the mesh number of first screen cloth is
60~80 mesh, the mesh number of second screen cloth is 150~200 mesh.
5. full automatic pulverized coal sampling analysis instrument according to claim 3, it is characterised in that the weighing device includes first
Weighing device, the second weighing device and the 3rd weighing device, first weighing device are arranged at the bottom of first screen cloth,
For being weighed to the coal dust sample being trapped on first screen cloth；Second weighing device is arranged at described
The bottom of two screen clothes, for being weighed to the coal dust sample being trapped on second screen cloth；Described 3rd weighs dress
The bottom for being arranged on the analysis system is put, for the minimum coal of the particle diameter through first screen cloth and the second screen cloth
Powder sample is weighed.
6. full automatic pulverized coal sampling analysis instrument according to claim 5, it is characterised in that the 3rd weighing device includes
Weighing tank and weighing sensor, the weighing tank are arranged on the bottom of the analysis system, the input port of the weighing tank and institute
The delivery outlet connection of analysis system is stated, the minimum coal dust sample of the particle diameter that the analysis system is obtained is successively through the analysis
The input port of the delivery outlet of system and the weighing tank enters the weighing tank, and the weighing sensor is arranged on the weighing tank
Bottom, for being weighed to the minimum coal dust sample of particle diameter.
7. full automatic pulverized coal sampling analysis instrument according to claim 6, it is characterised in that the full automatic pulverized coal sampling point
Analyzer also includes air feed appliance, and the feed pipe of the air feed appliance is connected with the outlet of the weighing tank, by described
The coal dust sample is sent into specified location by the air-flow in air feed appliance.
8. full automatic pulverized coal sampling analysis instrument according to claim 7, it is characterised in that the full automatic pulverized coal sampling point
Analyzer also includes air knife purging system, and the air knife system includes air compressor machine, air nozzle and connects the air compressor machine and described
The connecting tube of air nozzle, the air nozzle is arranged in the housing, and the compressed air that the air compressor machine is provided passes through air nozzle
Purge the enclosure interior.
9. full automatic pulverized coal sampling analysis instrument according to claim 8, it is characterised in that the analysis system also includes true
Empty pump, the bleeding point of the vavuum pump is connected with the housing, and the vavuum pump is used to be evacuated in the housing.
10. full automatic pulverized coal sampling analysis instrument according to claim 1, it is characterised in that the full automatic pulverized coal sampling
Analyzer also includes host computer, the data transfer that the host computer passes through 485 interfaces and the full automatic pulverized coal sampling analysis instrument
Interface is connected, to obtain the test data of the full automatic pulverized coal sampling analysis instrument.
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| CN201710528304.9A CN107063948B (en) | 2017-07-01 | 2017-07-01 | Full-automatic pulverized coal sampling analyzer |
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| CN109060615A (en) * | 2018-09-04 | 2018-12-21 | 四川重盟电力设备制造有限公司 | As-fired coal material partial size on-line analysis system |
| CN110018031A (en) * | 2019-05-09 | 2019-07-16 | 深圳国技仪器有限公司 | Suitable for Pu Shi/Fan's coomb's test Coomb instrument sample recombination system and method |
| CN110132385A (en) * | 2019-06-21 | 2019-08-16 | 河北雪龙科技发展有限公司 | A kind of full-automatic sampling weighing system for eps foam particle |
| CN110749522A (en) * | 2019-11-13 | 2020-02-04 | 磐安叶层煤矿设备有限公司 | Crushing type coal quality identification device |
| CN111272605A (en) * | 2020-04-09 | 2020-06-12 | 国网河北省电力有限公司电力科学研究院 | Drum-type pulverized coal fineness automatic measurement test device |
| CN112816369A (en) * | 2021-01-06 | 2021-05-18 | 中冶长天国际工程有限责任公司 | Sintered fuel coal granularity detection device |
| CN110132385B (en) * | 2019-06-21 | 2024-04-09 | 河北雪龙科技发展有限公司 | Full-automatic sampling and weighing system for EPS foam particles |
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